/* roulang page: index */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --danger:#FF2E4D;
  --success:#22B573;
  --disabled:#9AA1AB;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --r-pill:999px;
  --container:1280px;
  --shadow-dark:0 16px 48px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(15,18,22,.08);
  --shadow-hover:0 14px 34px rgba(15,18,22,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-800);
  background:var(--paper-050);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
svg{display:block;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px;}
::selection{background:var(--volt-500);color:var(--ink-900);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:768px){.container{padding:0 32px;}}
@media(min-width:1024px){.container{padding:0 48px;}}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--volt-500);color:var(--ink-900);box-shadow:0 10px 24px rgba(200,255,61,.22);}
.btn-primary:hover{background:var(--volt-600);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{border:1px solid rgba(255,255,255,.28);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(200,255,61,.12);border-color:var(--volt-500);color:var(--volt-500);transform:translateY(-2px);}
.btn-outline{border:1px solid var(--line-light);color:var(--ink-800);background:var(--paper-000);}
.btn-outline:hover{border-color:var(--volt-600);background:rgba(200,255,61,.16);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.55;cursor:not-allowed;filter:saturate(.6);transform:none;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
}
.nav-bar{
  display:grid;
  grid-template-columns:auto minmax(320px,1fr) auto;
  align-items:center;
  gap:28px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.logo-mark{
  position:relative;
  width:40px;height:40px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
  overflow:hidden;
  flex:0 0 auto;
}
.logo-mark::before{
  content:"";
  position:absolute;
  left:-14px;top:8px;
  width:52px;height:52px;
  border:3px solid rgba(14,17,22,.72);
  border-radius:50%;
}
.logo-mark::after{
  content:"";
  position:absolute;
  right:8px;top:9px;
  width:9px;height:22px;
  border-radius:3px;
  background:rgba(14,17,22,.82);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:800;color:#fff;letter-spacing:.4px;}
.logo-sub{font-size:11px;color:var(--gray-400);letter-spacing:.6px;}

.nav-search{
  display:flex;
  align-items:center;
  gap:6px;
  width:100%;
  max-width:560px;
  height:44px;
  padding:0 6px 0 16px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--volt-500);box-shadow:0 0 0 2px rgba(200,255,61,.20);}
.search-ico{width:18px;height:18px;color:var(--gray-400);flex:0 0 auto;}
.nav-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  padding:0 8px;
  background:transparent;
  border:0;
  color:#fff;
  font-size:14px;
}
.nav-search input::placeholder{color:var(--gray-400);}
.nav-search input:focus{outline:none;}
.nav-search input::-webkit-search-cancel-button{-webkit-appearance:none;}
.search-btn{
  flex:0 0 auto;
  height:34px;
  padding:0 20px;
  border-radius:var(--r-pill);
  background:var(--volt-500);
  color:var(--ink-900);
  font-size:14px;
  font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.search-btn:hover{background:var(--volt-600);transform:translateY(-2px);}

.nav-right{display:flex;align-items:center;gap:20px;justify-self:end;}
.nav-links{display:flex;align-items:center;gap:22px;}
.nav-link{
  position:relative;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.78);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--volt-500);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--volt-500);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 22px;
  border-radius:var(--r-pill);
  background:var(--volt-500);
  color:var(--ink-900);
  font-size:14px;
  font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.nav-cta:hover{background:var(--volt-600);transform:translateY(-2px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border:1px solid var(--line-dark);
  border-radius:12px;
  transition:border-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--volt-500);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.mobile-drawer{display:none;background:var(--ink-800);border-bottom:1px solid var(--line-dark);}
.mobile-drawer.open{display:block;}
.mobile-drawer .container{padding-top:6px;padding-bottom:12px;}
.mobile-drawer a{
  display:block;
  padding:14px 2px;
  font-size:15px;
  color:rgba(255,255,255,.82);
  border-bottom:1px solid var(--line-dark);
}
.mobile-drawer a:last-child{border-bottom:0;}
.mobile-drawer a.active{color:var(--volt-500);font-weight:700;}

/* 分类快捷条 */
.chips-bar{background:var(--ink-900);border-bottom:1px solid var(--line-dark);}
.chips-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:12px 0 14px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.chips-scroll::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  padding:7px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);
  color:rgba(255,255,255,.72);
  font-size:13px;
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.chip:hover{color:var(--volt-500);border-color:var(--volt-500);}
.chip.active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900);font-weight:700;}

/* ===== Hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  padding:56px 0 64px;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.26;
}
.hero-grid{
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 68% 26%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 68% 26%,#000 0%,transparent 72%);
}
.hero-arc{
  position:absolute;
  right:-10%;
  bottom:-30%;
  width:620px;height:620px;
  border:1px solid rgba(200,255,61,.26);
  border-radius:50%;
}
.hero-arc-2{
  right:2%;
  bottom:-38%;
  width:460px;height:460px;
  border-color:rgba(255,92,36,.20);
}
.hero-inner{
  position:relative;
  z-index:3;
  display:grid;
  grid-template-columns:1fr;
  gap:44px;
  align-items:center;
}
.hero-copy{max-width:660px;}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:20px;
  border-radius:var(--r-pill);
  border:1px solid rgba(200,255,61,.32);
  background:rgba(200,255,61,.10);
  color:var(--volt-500);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.6px;
}
.hero h1{
  font-size:clamp(28px,6.2vw,46px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:.2px;
  margin-bottom:18px;
}
.hero-sub{
  font-size:clamp(15px,2.4vw,18px);
  color:rgba(255,255,255,.76);
  line-height:1.75;
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:30px;}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.82);}
.pt-ico{
  width:20px;height:20px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:rgba(200,255,61,.16);
  color:var(--volt-500);
  font-size:11px;
  font-weight:800;
}

.hero-visual{display:flex;justify-content:center;}
.phone{
  position:relative;
  width:320px;
  max-width:78vw;
  aspect-ratio:9/16;
  border-radius:var(--r-xl);
  overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.phone img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.72;}
.phone-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,17,22,.30) 0%,rgba(14,17,22,.06) 42%,rgba(14,17,22,.88) 100%);
}
.phone-chip{
  position:absolute;left:14px;top:14px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:rgba(200,255,61,.92);
  color:var(--ink-900);
  font-size:11.5px;
  font-weight:800;
}
.phone-dur{
  position:absolute;right:14px;top:14px;
  padding:4px 10px;
  border-radius:var(--r-pill);
  background:var(--lava-500);
  color:#fff;
  font-size:11.5px;
  font-weight:800;
  letter-spacing:.4px;
}
.play-btn{
  position:absolute;left:50%;top:46%;
  transform:translate(-50%,-50%);
  width:60px;height:60px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--volt-500);
  color:var(--ink-900);
  box-shadow:0 12px 30px rgba(200,255,61,.34);
  transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.phone:hover .play-btn{transform:translate(-50%,-50%) scale(1.08);background:var(--volt-600);}
.phone-strips{position:absolute;left:14px;right:14px;bottom:34px;display:flex;gap:8px;}
.phone-strips i{
  flex:1 1 0;
  height:42px;
  border-radius:8px;
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(2px);
}
.progress{
  position:absolute;left:14px;right:14px;bottom:16px;
  height:4px;border-radius:2px;
  background:rgba(255,255,255,.20);
}
.progress i{display:block;width:60%;height:100%;border-radius:2px;background:var(--volt-500);}

/* ===== 通用板块 ===== */
.section{padding:52px 0;}
.section-alt{background:var(--paper-050);}
.section-white{background:var(--paper-000);}
.section-dark{background:var(--ink-900);color:#fff;}
@media(min-width:768px){.section{padding:58px 0;}}
@media(min-width:1024px){.section{padding:76px 0;}}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 24px;
  flex-wrap:wrap;
  margin-bottom:30px;
}
.section-title{
  position:relative;
  padding-left:15px;
  font-size:clamp(21px,3vw,26px);
  font-weight:800;
  line-height:1.32;
  letter-spacing:.2px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;
  width:4px;
  border-radius:2px;
  background:var(--volt-600);
}
.section-dark .section-title::before{background:var(--volt-500);}
.section-desc{
  margin-top:10px;
  padding-left:15px;
  font-size:14.5px;
  color:var(--gray-600);
  max-width:720px;
}
.section-dark .section-desc{color:rgba(255,255,255,.66);}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--volt-800);
}
.link-more span{transition:transform .2s var(--ease);}
.link-more:hover{color:var(--lava-600);}
.link-more:hover span{transform:translateX(4px);}
.section-dark .link-more{color:var(--volt-500);}
.section-dark .link-more:hover{color:var(--lava-500);}

/* ===== 横滑区与竖屏卡 ===== */
.rail{
  display:flex;
  gap:18px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 20px;
  margin:0 -4px;
  scroll-behavior:smooth;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--line-light);border-radius:3px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-card{flex:0 0 230px;scroll-snap-align:start;}
.mini-cover{
  position:relative;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:var(--paper-100);
  border:1px solid var(--line-light);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.mini-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rail-card:hover .mini-cover{transform:translateY(-6px);border-color:var(--volt-500);box-shadow:var(--shadow-hover);}
.rail-card:hover .mini-cover img{transform:scale(1.04);}
.mini-chip{
  position:absolute;left:10px;top:10px;
  padding:3px 10px;
  border-radius:var(--r-pill);
  background:rgba(14,17,22,.78);
  color:#fff;
  font-size:11px;
  font-weight:700;
  backdrop-filter:blur(3px);
}
.mini-dur{
  position:absolute;right:10px;top:10px;
  padding:3px 9px;
  border-radius:var(--r-pill);
  background:var(--lava-500);
  color:#fff;
  font-size:11px;
  font-weight:800;
}
.mini-play{
  position:absolute;left:50%;top:50%;
  transform:translate(-50%,-50%);
  width:44px;height:44px;
  border-radius:50%;
  background:rgba(200,255,61,.9);
  box-shadow:0 8px 22px rgba(0,0,0,.32);
}
.mini-play::after{
  content:"";
  position:absolute;
  left:17px;top:13px;
  width:0;height:0;
  border-left:12px solid var(--ink-900);
  border-top:9px solid transparent;
  border-bottom:9px solid transparent;
}
.mini-title{
  margin-top:12px;
  font-size:15px;
  font-weight:700;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.mini-views{
  display:flex;
  align-items:center;
  gap:7px;
  margin-top:6px;
  font-size:12.5px;
  color:var(--lava-600);
  font-weight:700;
}
.mini-views .dot{width:6px;height:6px;border-radius:50%;background:var(--lava-500);}
@media(max-width:600px){
  .rail-card{flex:0 0 62vw;}
}

/* ===== 编号清单 ===== */
.pick-grid{
  display:grid;
  grid-template-columns:1fr;
  border-top:1px solid var(--line-light);
}
.pick-item{
  display:grid;
  grid-template-columns:48px 34px 1fr;
  align-items:center;
  gap:16px;
  padding:18px 4px;
  border-bottom:1px solid var(--line-light);
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.pick-item:hover{background:rgba(200,255,61,.10);transform:translateX(2px);}
.pick-num{
  font-size:26px;
  font-weight:800;
  line-height:1;
  color:var(--volt-800);
  font-variant-numeric:tabular-nums;
}
.pick-thumb{
  width:34px;height:34px;
  border-radius:9px;
  object-fit:cover;
  border:1px solid var(--line-light);
}
.pick-body{min-width:0;}
.pick-title{font-size:16px;font-weight:700;line-height:1.5;}
.pick-text{margin-top:3px;font-size:13.5px;color:var(--gray-600);line-height:1.65;}
.pick-tag{
  display:inline-block;
  margin-top:7px;
  padding:2px 10px;
  border-radius:var(--r-pill);
  background:rgba(200,255,61,.28);
  color:var(--volt-800);
  font-size:11.5px;
  font-weight:700;
}
@media(min-width:1024px){
  .pick-grid{grid-template-columns:1fr 1fr;column-gap:56px;}
}

/* ===== 口碑卡 ===== */
.voice-rail{
  display:flex;
  gap:18px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 18px;
  margin:0 -4px;
}
.voice-rail::-webkit-scrollbar{height:6px;}
.voice-rail::-webkit-scrollbar-thumb{background:var(--line-light);border-radius:3px;}
.voice-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  padding:18px;
  border-radius:var(--r-lg);
  background:var(--paper-000);
  border:1px solid var(--line-light);
  box-shadow:var(--shadow-light);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.voice-top{display:flex;align-items:center;gap:10px;}
.avatar{
  width:38px;height:38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--ink-800);
  color:var(--volt-500);
  font-size:14px;
  font-weight:800;
  flex:0 0 auto;
}
.voice-name{font-size:14px;font-weight:700;}
.voice-time{font-size:12px;color:var(--gray-400);}
.stars{margin-top:12px;color:var(--lava-500);font-size:13px;letter-spacing:2px;}
.voice-text{margin-top:8px;font-size:14px;color:var(--gray-600);line-height:1.7;}

/* ===== 资讯卡片网格 ===== */
.news-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);}}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--paper-000);
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow-light);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.news-cover{
  position:relative;
  display:block;
  aspect-ratio:16/9;
  background:var(--paper-100);
  overflow:hidden;
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-cover-fallback{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper-100);
}
.news-cover-fallback span{
  width:38px;height:38px;
  border-radius:11px;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
  position:relative;
}
.news-cover-fallback span::after{
  content:"";
  position:absolute;right:8px;top:9px;
  width:8px;height:20px;border-radius:3px;background:rgba(14,17,22,.8);
}
.news-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1 1 auto;
  padding:16px 18px 20px;
}
.news-title{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-title a:hover{color:var(--lava-600);}
.news-excerpt{
  font-size:14px;
  color:var(--gray-600);
  line-height:1.72;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--gray-400);
}
.tag{
  display:inline-block;
  padding:3px 11px;
  border-radius:var(--r-pill);
  background:rgba(200,255,61,.30);
  color:var(--volt-800);
  font-size:12px;
  font-weight:700;
  white-space:nowrap;
}
.empty-state{
  grid-column:1/-1;
  padding:46px 24px;
  border:2px dashed var(--line-light);
  border-radius:var(--r-lg);
  background:var(--paper-000);
  text-align:center;
}
.empty-ico{
  display:inline-block;
  width:44px;height:44px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
  position:relative;
  margin-bottom:14px;
}
.empty-ico::after{
  content:"";
  position:absolute;right:9px;top:10px;
  width:9px;height:24px;border-radius:3px;background:rgba(14,17,22,.8);
}
.empty-title{font-size:17px;font-weight:700;}
.empty-desc{margin-top:8px;font-size:14px;color:var(--gray-600);line-height:1.75;}

/* ===== 转化条 ===== */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--ink-900);
  color:#fff;
  padding:52px 0;
}
.cta-slash{
  position:absolute;
  top:0;bottom:0;
  left:34%;
  width:180px;
  background:rgba(200,255,61,.07);
  transform:skewX(-18deg);
}
.cta-glow{
  position:absolute;
  right:-120px;top:-100px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(200,255,61,.18),transparent 68%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:center;
}
.cta-title{font-size:clamp(21px,3.2vw,28px);font-weight:800;line-height:1.35;}
.cta-text{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.72);}
.cta-steps{display:flex;flex-wrap:wrap;gap:14px;}
.cta-step{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.82);
}
.step-num{
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--volt-500);
  color:var(--ink-900);
  font-size:13px;
  font-weight:800;
  flex:0 0 auto;
}
.cta-action{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.qr-box{
  width:76px;height:76px;
  border-radius:var(--r-md);
  border:1px dashed rgba(255,255,255,.32);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  color:rgba(255,255,255,.56);
  text-align:center;
  line-height:1.3;
  padding:6px;
  flex:0 0 auto;
}
@media(min-width:1024px){
  .cta-inner{grid-template-columns:1.25fr 1fr auto;gap:36px;}
}

/* ===== FAQ ===== */
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--paper-000);
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:#cfd4c7;}
.faq-item.open{border-color:var(--volt-600);box-shadow:var(--shadow-light);}
.faq-q{
  position:relative;
  width:100%;
  min-height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 20px 14px 22px;
  text-align:left;
  font-size:15.5px;
  font-weight:700;
  color:var(--ink-800);
  line-height:1.55;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 2px 2px 0;
  background:var(--volt-500);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item.open .faq-q::before{opacity:1;}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--gray-600);
  border-radius:1px;
  transition:transform .18s var(--ease),opacity .18s var(--ease),background-color .18s var(--ease);
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--volt-800);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-item.open .faq-a{max-height:340px;}
.faq-a p{
  padding:0 22px 20px;
  font-size:14.5px;
  color:var(--gray-600);
  line-height:1.85;
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--ink-900);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h3{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:.3px;
}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.66);
}
.footer-col a:hover{color:var(--volt-500);}
.footer-search{
  display:flex;
  align-items:center;
  gap:6px;
  height:42px;
  padding:0 6px 0 14px;
  border-radius:var(--r-pill);
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  margin-bottom:16px;
}
.footer-search:focus-within{border-color:var(--volt-500);}
.footer-search input{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  border:0;
  background:transparent;
  color:#fff;
  font-size:13.5px;
}
.footer-search input::placeholder{color:var(--gray-400);}
.footer-search input:focus{outline:none;}
.footer-search button{
  flex:0 0 auto;
  height:32px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--volt-500);
  color:var(--ink-900);
  font-size:13px;
  font-weight:700;
}
.footer-search button:hover{background:var(--volt-600);}
.footer-qr{
  width:96px;height:96px;
  border-radius:var(--r-md);
  border:1px dashed rgba(255,255,255,.30);
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:11.5px;
  line-height:1.4;
  color:rgba(255,255,255,.5);
  padding:8px;
}
.footer-bottom{
  margin-top:44px;
  border-top:1px solid var(--line-dark);
  padding:18px 0 24px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:rgba(255,255,255,.52);
}
.footer-bottom a:hover{color:var(--volt-500);}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}

@media(min-width:768px){
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
}

/* ===== 响应式导航 ===== */
@media(max-width:1023px){
  .nav-bar{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    min-height:auto;
    padding:10px 0 12px;
  }
  .nav-links{display:none;}
  .nav-right{gap:10px;margin-left:auto;}
  .nav-toggle{display:flex;}
  .nav-search{order:9;flex:1 1 100%;max-width:none;}
  .logo{order:1;}
}
@media(max-width:600px){
  .logo-mark{width:36px;height:36px;}
  .logo-name{font-size:15px;}
  .logo-sub{font-size:10.5px;}
  .nav-cta{height:38px;padding:0 16px;font-size:13.5px;}
  .hero{padding:40px 0 52px;}
  .hero-actions .btn{width:100%;}
  .phone-strips i{height:34px;}
}
@media(min-width:1024px){
  .mobile-drawer{display:none !important;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --danger:#FF2E4D;
  --success:#22B573;
  --disabled:#9AA1AB;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --shadow-dark:0 16px 48px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(15,18,22,.08);
  --container:1280px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-800);
  background:var(--paper-050);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;}
p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--volt-500);color:var(--ink-900);padding:10px 16px;border-radius:0 0 var(--r-md) 0;z-index:200;}
.skip-link:focus{left:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;font-size:15px;font-weight:700;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--volt-500);color:var(--ink-900);box-shadow:0 8px 20px rgba(200,255,61,.20);}
.btn-primary:hover{background:var(--volt-600);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--paper-000);border:1px solid var(--line-dark);}
.btn-ghost:hover{background:rgba(200,255,61,.10);border-color:var(--volt-500);color:var(--volt-500);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--ink-800);border:1px solid var(--line-light);}
.btn-outline:hover{border-color:var(--volt-500);background:rgba(200,255,61,.12);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.6;filter:saturate(40%);cursor:not-allowed;transform:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(14,17,22,.95);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line-dark);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(0,0,0,.45);}
.header-inner{
  display:grid;
  grid-template-columns:auto minmax(280px,1fr) auto;
  align-items:center;
  gap:22px;
  min-height:76px;
  padding-top:10px;padding-bottom:10px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
  position:relative;overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;left:8px;right:8px;top:11px;height:16px;
  border:2px solid var(--ink-900);border-radius:50% 50% 50% 50%/70% 70% 40% 40%;
  border-bottom-color:transparent;opacity:.85;
}
.logo-mark::after{
  content:"";position:absolute;left:7px;bottom:9px;width:24px;height:12px;
  border:2px solid var(--ink-900);border-radius:999px;border-top-color:transparent;opacity:.65;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:17px;font-weight:800;color:var(--paper-000);letter-spacing:.2px;}
.logo-sub{font-size:11px;color:var(--gray-400);letter-spacing:.6px;}
.nav-search{
  position:relative;display:flex;align-items:center;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:999px;
  height:48px;width:100%;max-width:560px;justify-self:center;
  padding:0 6px 0 46px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--volt-500);box-shadow:0 0 0 3px rgba(200,255,61,.16);background:var(--ink-700);}
.nav-search .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:19px;height:19px;color:var(--gray-400);pointer-events:none;}
.nav-search input[type="search"]{
  flex:1;min-width:0;height:100%;background:transparent;border:0;outline:none;
  color:var(--paper-000);font-size:14.5px;
}
.nav-search input[type="search"]::placeholder{color:var(--gray-400);}
.nav-search .search-btn{
  flex:0 0 auto;height:36px;padding:0 18px;border-radius:999px;
  background:var(--volt-500);color:var(--ink-900);font-size:14px;font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.nav-search .search-btn:hover{background:var(--volt-600);transform:translateY(-2px);}
.header-right{display:flex;align-items:center;gap:16px;justify-self:end;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;padding:8px 10px;font-size:14px;color:rgba(255,255,255,.74);
  border-radius:var(--r-sm);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;
  background:var(--volt-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--paper-000);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--paper-000);font-weight:700;}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-dark);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--paper-000);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);
  padding:40px 0 52px;
}
.article-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.30;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,17,22,.96) 0%,rgba(14,17,22,.72) 58%,rgba(14,17,22,.92) 100%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--gray-400);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.72);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--volt-500);}
.breadcrumb .sep{color:rgba(255,255,255,.28);}
.breadcrumb .current{color:var(--gray-400);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  color:var(--paper-000);
  font-size:clamp(24px,3.4vw,40px);
  line-height:1.28;
  font-weight:800;
  max-width:920px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:13px;color:var(--gray-400);
}
.chip-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(200,255,61,.14);color:var(--volt-500);font-size:12.5px;font-weight:700;
  border:1px solid rgba(200,255,61,.28);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.28);}

/* ---------- 文章布局 ---------- */
.article-section{padding:56px 0 72px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,760px) 300px;
  gap:48px;
  align-items:start;
  justify-content:center;
}
.article-main{min-width:0;}
.article-cover{
  margin:0 0 32px;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-light);background:var(--paper-100);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-cover figcaption{font-size:13px;color:var(--gray-600);padding:12px 16px;background:var(--paper-000);text-align:center;}

/* ---------- 正文排版 ---------- */
.prose{
  background:var(--paper-000);
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  padding:36px 40px 40px;
  font-size:17px;line-height:1.9;color:var(--ink-800);
  overflow-wrap:break-word;word-break:break-word;
}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.35em;}
.prose h2{
  font-size:24px;line-height:1.4;margin:2em 0 .9em;
  padding-left:16px;border-left:4px solid var(--volt-500);
}
.prose h3{font-size:20px;line-height:1.45;margin:1.7em 0 .7em;font-weight:700;}
.prose h4{font-size:17px;margin:1.4em 0 .6em;color:var(--ink-700);}
.prose a{color:var(--volt-800);text-decoration:underline;text-decoration-color:rgba(200,255,61,.7);text-underline-offset:3px;transition:color .2s var(--ease);}
.prose a:hover{color:var(--lava-600);text-decoration-color:var(--lava-500);}
.prose ul,.prose ol{margin:0 0 1.35em;padding-left:24px;}
.prose ul{list-style:none;}
.prose ul li{position:relative;padding-left:8px;margin-bottom:.5em;}
.prose ul li::before{
  content:"";position:absolute;left:-16px;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--volt-500);
}
.prose ol{list-style:decimal;}
.prose ol li{margin-bottom:.5em;}
.prose ol li::marker{color:var(--volt-800);font-weight:700;}
.prose blockquote{
  margin:0 0 1.5em;padding:18px 22px;
  background:var(--paper-050);
  border-left:4px solid var(--lava-500);
  border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--ink-700);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:12px;margin:26px auto;}
.prose figure{margin:26px 0;}
.prose figure img{margin:0;}
.prose figcaption{font-size:14px;color:var(--gray-600);text-align:center;margin-top:10px;}
.prose table{
  width:100%;border-collapse:collapse;margin:0 0 1.6em;font-size:15px;
  border:1px solid var(--line-light);border-radius:var(--r-md);overflow:hidden;
}
.prose thead th{
  background:var(--paper-050);text-align:left;font-weight:700;
  padding:12px 14px;border-bottom:2px solid var(--volt-500);color:var(--ink-800);
}
.prose tbody td{padding:11px 14px;border-bottom:1px solid var(--line-light);color:var(--ink-700);}
.prose tbody tr:nth-child(even){background:rgba(244,245,241,.6);}
.prose tbody tr:last-child td{border-bottom:0;}
.prose pre{
  background:var(--ink-800);color:#E6EAF0;border-radius:var(--r-sm);
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.7;margin:0 0 1.5em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em;}
.prose p code,.prose li code{background:var(--paper-100);padding:2px 6px;border-radius:6px;color:var(--ink-800);}
.prose hr{border:0;border-top:1px solid var(--line-light);margin:2em 0;}
.prose strong{font-weight:800;color:var(--ink-900);}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--paper-000);
  border:2px dashed var(--line-light);
  border-radius:var(--r-lg);
  padding:56px 28px;
  text-align:center;
}
.empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
  display:flex;align-items:center;justify-content:center;position:relative;
}
.empty-mark::before{
  content:"";width:22px;height:22px;border:2px solid var(--ink-900);border-radius:50%;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--gray-600);font-size:15px;max-width:440px;margin:0 auto 22px;}

/* ---------- 标签 / 相关 ---------- */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin:32px 0 0;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--paper-000);border:1px solid var(--line-light);
  font-size:13px;color:var(--gray-600);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{border-color:var(--volt-500);color:var(--ink-800);transform:translateY(-2px);}

.related-block{margin-top:44px;}
.related-block h2{font-size:22px;margin-bottom:18px;display:flex;align-items:center;gap:12px;}
.related-block h2::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--volt-500);}
.related-list{display:flex;flex-direction:column;gap:14px;}
.related-item{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:18px;align-items:center;
  background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:14px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.related-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-light);border-color:var(--volt-500);}
.related-item .thumb{border-radius:var(--r-sm);overflow:hidden;background:var(--paper-100);}
.related-item .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.related-item h3{font-size:16.5px;line-height:1.5;margin-bottom:6px;}
.related-item p{font-size:13.5px;color:var(--gray-600);line-height:1.7;}
.related-item .meta{font-size:12.5px;color:var(--gray-400);margin-top:8px;display:flex;gap:10px;align-items:center;}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:20px;box-shadow:0 2px 10px rgba(15,18,22,.04);
}
.side-card h3{
  font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:10px;
}
.side-card h3::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--lava-500);}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;padding:9px 12px;border-radius:var(--r-sm);font-size:14px;color:var(--gray-600);
  transition:background-color .2s var(--ease),color .2s var(--ease),padding-left .2s var(--ease);
}
.toc-list a:hover{background:var(--paper-050);color:var(--ink-900);padding-left:16px;}
.hot-list{list-style:none;display:flex;flex-direction:column;gap:2px;}
.hot-list a{
  display:flex;gap:10px;padding:10px 8px;border-radius:var(--r-sm);font-size:14px;color:var(--gray-600);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.hot-list a:hover{background:var(--paper-050);color:var(--ink-900);}
.hot-list .num{
  flex:0 0 auto;font-size:14px;font-weight:800;color:var(--volt-800);
  font-family:"Barlow Condensed","HarmonyOS Sans SC",sans-serif;
}
.side-cta{
  background:linear-gradient(150deg,var(--ink-900),var(--ink-700));
  border-color:transparent;color:var(--paper-000);
}
.side-cta h3{color:var(--paper-000);}
.side-cta h3::before{background:var(--volt-500);}
.side-cta p{font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:16px;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-alt{background:var(--paper-000);}
.section-head{margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1px;
  color:var(--volt-800);background:rgba(200,255,61,.22);border-radius:999px;padding:5px 12px;margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px);}
.section-head p{margin-top:10px;color:var(--gray-600);font-size:15.5px;max-width:640px;}

/* ---------- 相关分类卡 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-light);border-color:var(--volt-500);}
.card .thumb{position:relative;background:var(--paper-100);}
.card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card .badge{
  align-self:flex-start;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;
  background:rgba(255,92,36,.12);color:var(--lava-600);
}
.card h3{font-size:17.5px;line-height:1.5;}
.card p{font-size:14px;color:var(--gray-600);line-height:1.75;flex:1;}
.card .more{font-size:14px;font-weight:700;color:var(--volt-800);display:inline-flex;align-items:center;gap:6px;}
.card .more svg{transition:transform .2s var(--ease);}
.card:hover .more svg{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.open{border-color:var(--volt-500);box-shadow:var(--shadow-light);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:700;color:var(--ink-800);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--volt-800);}
.faq-item.open .faq-q{color:var(--ink-900);}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;position:relative;
  background:var(--paper-050);border:1px solid var(--line-light);
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--ink-700);border-radius:2px;
}
.faq-q .sign::before{width:12px;height:2px;}
.faq-q .sign::after{width:2px;height:12px;transition:opacity .2s var(--ease);}
.faq-item.open .faq-q .sign{background:var(--volt-500);border-color:var(--volt-500);transform:rotate(180deg);}
.faq-item.open .faq-q .sign::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .28s var(--ease);
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--gray-600);line-height:1.85;}
.faq-item{border-left:1px solid var(--line-light);}
.faq-item.open{box-shadow:inset 3px 0 0 var(--volt-500),var(--shadow-light);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);color:var(--paper-000);position:relative;overflow:hidden;
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;
  background:conic-gradient(from 200deg,rgba(200,255,61,.22),rgba(255,92,36,.16),transparent 70%);
  border-radius:50%;filter:blur(10px);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-steps{display:flex;gap:18px;flex-wrap:wrap;margin-top:24px;}
.cta-step{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.78);}
.cta-step .n{
  width:26px;height:26px;border-radius:50%;background:var(--volt-500);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
}
.qr-box{
  width:150px;height:150px;border-radius:var(--r-lg);border:1px dashed rgba(255,255,255,.28);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  color:rgba(255,255,255,.6);font-size:12.5px;text-align:center;background:rgba(255,255,255,.04);
}
.qr-box span.mark{
  width:46px;height:46px;border-radius:12px;background:linear-gradient(140deg,var(--volt-500),var(--volt-600));
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:60px 0 24px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px;}
.footer-col h3{font-size:15px;color:var(--paper-000);margin-bottom:16px;}
.footer-col a{display:block;padding:6px 0;color:rgba(255,255,255,.72);font-size:13.5px;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--volt-500);transform:translateX(3px);}
.footer-search{display:flex;gap:8px;margin-bottom:16px;}
.footer-search input{
  flex:1;min-width:0;height:42px;border-radius:999px;padding:0 16px;
  background:var(--ink-800);border:1px solid var(--line-dark);color:var(--paper-000);outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-search input::placeholder{color:var(--gray-400);}
.footer-search input:focus{border-color:var(--volt-500);box-shadow:0 0 0 3px rgba(200,255,61,.14);}
.footer-search button{
  height:42px;padding:0 18px;border-radius:999px;background:var(--volt-500);color:var(--ink-900);
  font-weight:700;font-size:14px;transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.footer-search button:hover{background:var(--volt-600);transform:translateY(-2px);}
.footer-qr{
  width:110px;height:110px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;
  color:rgba(255,255,255,.55);background:rgba(255,255,255,.04);
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{color:rgba(255,255,255,.6);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--volt-500);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .header-inner{grid-template-columns:auto minmax(200px,1fr) auto;gap:14px;}
  .nav-links{display:none;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;flex-direction:column;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-inner{grid-template-columns:minmax(0,1fr);}
  .qr-box{width:100%;height:96px;flex-direction:row;}
}
@media (max-width:900px){
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:2px;
    background:var(--ink-900);border-bottom:1px solid var(--line-dark);
    padding:12px 20px 20px;box-shadow:var(--shadow-dark);
  }
  .nav-links.open{display:flex;}
  .nav-link{padding:13px 8px;font-size:15px;border-bottom:1px solid var(--line-dark);border-radius:0;}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--volt-500);}
  .site-header{position:sticky;}
  .header-inner{grid-template-columns:1fr auto;grid-template-areas:"logo toggle" "search search";gap:10px;padding-top:12px;padding-bottom:12px;}
  .logo{grid-area:logo;}
  .nav-toggle{grid-area:toggle;}
  .nav-search{grid-area:search;max-width:none;justify-self:stretch;}
  .header-right{gap:10px;justify-self:end;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .article-section{padding:40px 0 56px;}
  .prose{padding:26px 22px 30px;font-size:16.5px;}
  .prose h2{font-size:21px;}
  .prose h3{font-size:18px;}
  .article-cover{margin-bottom:24px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .related-item{grid-template-columns:104px minmax(0,1fr);gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:none;}
  .cta-band{padding:48px 0;}
  .cta-actions .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-name{font-size:15.5px;}
  .logo-sub{font-size:10.5px;}
  .nav-search{height:44px;padding-left:42px;}
  .nav-search input[type="search"]{font-size:14px;}
  .nav-search .search-btn{padding:0 14px;font-size:13px;height:34px;}
  .article-title{font-size:23px;}
  .breadcrumb .current{max-width:160px;}
  .prose{padding:22px 18px 26px;}
  .prose table{font-size:13.5px;}
  .related-item{grid-template-columns:1fr;}
  .related-item .thumb img{aspect-ratio:16/9;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --live:#FF2E4D;
  --ok:#22B573;
  --disabled:#9AA1AB;
  --container:1280px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-dark:0 16px 48px rgba(0,0,0,.45);
  --sh-light:0 8px 24px rgba(15,18,22,.08);
  --sh-hover:0 16px 36px rgba(15,18,22,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-800);
  background:var(--paper-050);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px;}
::selection{background:var(--volt-500);color:var(--ink-900);}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1024px){.container{padding:0 48px;}}

.num{font-family:"Barlow Condensed","Archivo","Arial Narrow",system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--volt-500);color:var(--ink-900);box-shadow:0 6px 18px rgba(200,255,61,.24);}
.btn-primary:hover{background:var(--volt-600);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--paper-000);border-color:var(--line-dark);}
.btn-ghost:hover{background:rgba(200,255,61,.08);border-color:var(--volt-500);transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--ink-800);border-color:var(--line-light);}
.btn-outline:hover{background:rgba(200,255,61,.14);border-color:var(--volt-500);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn:disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 站点头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
}
.header-main{
  display:grid;
  grid-template-columns:auto minmax(280px,1fr) auto;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  position:relative;width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--volt-500),var(--volt-600));
  box-shadow:0 6px 16px rgba(200,255,61,.28);
}
.logo-mark::before{
  content:"";position:absolute;inset:8px 14px 8px 8px;
  border-radius:4px;background:var(--ink-900);
}
.logo-mark::after{
  content:"";position:absolute;left:9px;right:9px;top:50%;height:2px;
  background:var(--volt-500);border-radius:2px;transform:translateY(-4px);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{color:var(--paper-000);font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.logo-sub{color:var(--gray-400);font-size:11px;letter-spacing:.04em;white-space:nowrap;}

.nav-search{
  display:flex;align-items:center;gap:6px;
  width:100%;max-width:560px;
  padding:5px 5px 5px 16px;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line-dark);
  border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.nav-search:focus-within{
  background:rgba(255,255,255,.10);
  border-color:var(--volt-500);
  box-shadow:0 0 0 3px rgba(200,255,61,.18);
}
.nav-search svg{width:19px;height:19px;flex:0 0 auto;stroke:var(--gray-400);}
.nav-search input{
  flex:1 1 auto;min-width:0;height:38px;
  background:transparent;border:0;outline:none;
  color:var(--paper-000);font-size:14px;
}
.nav-search input::placeholder{color:var(--gray-400);}
.nav-search button{
  flex:0 0 auto;height:38px;padding:0 20px;border:0;border-radius:999px;
  background:var(--volt-500);color:var(--ink-900);font-size:14px;font-weight:700;cursor:pointer;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.nav-search button:hover{background:var(--volt-600);transform:translateY(-2px);}

.header-right{display:flex;align-items:center;gap:22px;}
.nav-links{display:flex;align-items:center;gap:20px;}
.nav-link{
  position:relative;padding:6px 0;
  color:rgba(255,255,255,.72);font-size:14px;white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--volt-500);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--paper-000);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--paper-000);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--paper-000);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-search{display:none;padding-bottom:12px;}

/* 分类 chips 条 */
.cat-chips{
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
  overflow:hidden;
}
.cat-chips .chips-scroll{
  display:flex;gap:10px;overflow-x:auto;padding:14px 0;
  scrollbar-width:none;
}
.cat-chips .chips-scroll::-webkit-scrollbar{display:none;}
.cat-chip{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.72);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-dark);
  transition:all .2s var(--ease);
}
.cat-chip:hover{color:var(--paper-000);border-color:rgba(200,255,61,.5);}
.cat-chip.is-active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900);font-weight:600;}

/* ============ 页面横幅 ============ */
.page-banner{
  position:relative;
  min-height:300px;
  aspect-ratio:21/9;
  display:flex;align-items:flex-end;
  overflow:hidden;
  background:var(--ink-900);
}
.banner-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.banner-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,17,22,.94) 0%,rgba(14,17,22,.78) 45%,rgba(14,17,22,.42) 100%);
}
.banner-content{position:relative;z-index:2;padding-bottom:42px;padding-top:56px;width:100%;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.60);margin-bottom:14px;
}
.breadcrumb a{color:rgba(255,255,255,.78);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--volt-500);}
.breadcrumb .sep{color:var(--gray-400);}
.breadcrumb .cur{color:rgba(255,255,255,.60);}
.page-banner h1{
  color:var(--paper-000);
  font-size:clamp(26px,3.6vw,44px);
  font-weight:800;line-height:1.18;letter-spacing:.01em;
  max-width:900px;
}
.page-banner h1 em{font-style:normal;color:var(--volt-500);}
.banner-sub{
  margin-top:14px;max-width:640px;
  color:rgba(255,255,255,.74);font-size:15px;line-height:1.75;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.tag-dark{
  padding:6px 14px;border-radius:999px;font-size:12.5px;
  color:rgba(255,255,255,.80);background:rgba(255,255,255,.07);
  border:1px solid var(--line-dark);
}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:64px 0;}}
@media (min-width:1024px){.section{padding:72px 0;}}
.section-dark{background:var(--ink-900);color:rgba(255,255,255,.78);}
.section-paper{background:var(--paper-000);}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:28px;flex-wrap:wrap;
}
.section-head h2{
  position:relative;padding-left:16px;
  font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.34;
  color:var(--ink-900);
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:4px;background:var(--volt-500);
}
.section-dark .section-head h2{color:var(--paper-000);}
.section-desc{margin-top:10px;color:var(--gray-600);font-size:14.5px;max-width:720px;}
.section-dark .section-desc{color:rgba(255,255,255,.66);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--volt-800);
  transition:color .2s var(--ease),gap .2s var(--ease);
}
.link-more:hover{color:var(--ink-900);gap:11px;}
.section-dark .link-more{color:var(--volt-500);}
.section-dark .link-more:hover{color:var(--paper-000);}

/* ============ 简介区 ============ */
.intro-wrap{
  display:grid;gap:24px;
  grid-template-columns:1fr;
  margin-top:-32px;position:relative;z-index:5;
}
@media (min-width:1024px){.intro-wrap{grid-template-columns:minmax(0,1fr) 340px;gap:32px;}}
.intro-card{
  background:var(--paper-000);
  border:1px solid var(--line-light);
  border-radius:var(--r-xl);
  padding:28px;
  box-shadow:var(--sh-light);
}
.intro-card h2{font-size:19px;font-weight:700;color:var(--ink-900);margin-bottom:12px;}
.intro-card p{color:var(--gray-600);font-size:15.5px;line-height:1.9;}
.intro-side{display:grid;gap:14px;}
.mini-stat{
  background:var(--ink-900);color:rgba(255,255,255,.76);
  border-radius:var(--r-lg);padding:20px 22px;
  border:1px solid var(--line-dark);
}
.mini-stat strong{
  display:block;font-size:26px;color:var(--volt-500);
  font-family:"Barlow Condensed","Archivo",system-ui,sans-serif;
  letter-spacing:.02em;line-height:1.2;
}
.mini-stat span{font-size:13.5px;color:rgba(255,255,255,.68);display:block;margin-top:4px;}

/* ============ 三要点卡 ============ */
.quick-grid{display:grid;gap:18px;grid-template-columns:1fr;}
@media (min-width:768px){.quick-grid{grid-template-columns:repeat(3,1fr);}}
.quick-card{
  background:var(--paper-000);
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  padding:26px 24px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--sh-light);border-color:var(--volt-500);}
.quick-icon{
  width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:rgba(200,255,61,.22);color:var(--volt-800);margin-bottom:16px;
}
.quick-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.9;}
.quick-card h3{font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:8px;}
.quick-card p{font-size:14.5px;color:var(--gray-600);line-height:1.8;}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:2px 0 24px;
  scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-chip{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  background:var(--paper-000);border:1px solid var(--line-light);
  font-size:14px;color:var(--gray-600);
  transition:all .2s var(--ease);
}
.filter-chip:hover{border-color:var(--volt-500);color:var(--ink-900);transform:translateY(-2px);}
.filter-chip.is-active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900);font-weight:600;}

/* ============ 竖屏演示卡 ============ */
.clip-grid{display:grid;gap:18px;grid-template-columns:repeat(2,minmax(0,1fr));}
@media (min-width:768px){.clip-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}}
@media (min-width:1024px){.clip-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
@media (min-width:1280px){.clip-grid{grid-template-columns:repeat(5,minmax(0,1fr));}}

.clip-card{display:flex;flex-direction:column;gap:10px;transition:transform .22s var(--ease);}
.clip-card:hover{transform:translateY(-6px);}
.clip-cover{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-lg);overflow:hidden;
  background:var(--paper-100);border:1px solid var(--line-light);
  transition:box-shadow .22s var(--ease);
}
.clip-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.clip-card:hover .clip-cover{box-shadow:0 0 0 2px var(--volt-500),0 16px 32px rgba(15,18,22,.16);}
.clip-card:hover .clip-cover img{transform:scale(1.05);}
.clip-cover::after{
  content:"";position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,rgba(14,17,22,0) 0%,rgba(14,17,22,.72) 100%);
}
.chip-float{
  position:absolute;left:10px;top:10px;z-index:3;
  padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(200,255,61,.94);color:var(--ink-900);
}
.badge-time{
  position:absolute;right:10px;bottom:14px;z-index:3;
  padding:3px 9px;border-radius:8px;
  background:rgba(255,92,36,.94);color:#fff;
  font-size:12px;font-weight:700;
  font-family:"Barlow Condensed","Archivo",system-ui,sans-serif;letter-spacing:.04em;
}
.play-dot{
  position:absolute;left:50%;top:46%;z-index:3;
  width:46px;height:46px;margin:-23px 0 0 -23px;border-radius:50%;
  background:var(--volt-500);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px rgba(0,0,0,.34);
  opacity:.94;transition:transform .22s var(--ease);
}
.play-dot::before{
  content:"";width:0;height:0;margin-left:3px;
  border-left:13px solid var(--ink-900);
  border-top:8px solid transparent;border-bottom:8px solid transparent;
}
.clip-card:hover .play-dot{transform:scale(1.08);}
.clip-progress{
  position:absolute;left:10px;right:10px;bottom:6px;height:3px;z-index:3;
  border-radius:3px;background:rgba(255,255,255,.28);overflow:hidden;
}
.clip-progress i{display:block;height:100%;width:60%;background:var(--volt-500);border-radius:3px;}
.clip-title{
  font-size:14.5px;font-weight:600;line-height:1.55;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-meta{
  font-size:12.5px;color:var(--lava-500);font-weight:600;
  font-family:"Barlow Condensed","Archivo",system-ui,sans-serif;letter-spacing:.03em;
}

/* ============ 编号清单 ============ */
.checklist{border-top:1px solid var(--line-light);}
.check-item{
  display:grid;grid-template-columns:56px 32px minmax(0,1fr);
  gap:16px;align-items:start;
  padding:22px 0;border-bottom:1px solid var(--line-light);
  transition:background-color .2s var(--ease);
}
.check-item:hover{background:rgba(200,255,61,.07);}
.check-num{
  font-family:"Barlow Condensed","Archivo",system-ui,sans-serif;
  font-size:34px;line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1.3px var(--volt-600);
}
.check-thumb{
  width:32px;height:32px;border-radius:9px;overflow:hidden;
  background:var(--paper-100);border:1px solid var(--line-light);
}
.check-thumb img{width:100%;height:100%;object-fit:cover;}
.check-body h3{font-size:17px;font-weight:700;color:var(--ink-900);}
.check-body p{margin-top:6px;font-size:14.5px;color:var(--gray-600);line-height:1.8;}
.check-tag{
  display:inline-block;margin-top:10px;padding:4px 11px;border-radius:999px;
  font-size:12px;color:var(--volt-800);background:rgba(200,255,61,.24);
}

/* ============ 卡点速查 ============ */
.fix-grid{display:grid;gap:16px;grid-template-columns:1fr;}
@media (min-width:768px){.fix-grid{grid-template-columns:repeat(2,1fr);}}
.fix-card{
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  padding:22px 24px;
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.fix-card:hover{transform:translateY(-4px);border-color:rgba(200,255,61,.42);}
.fix-card h3{font-size:15.5px;font-weight:700;color:var(--paper-000);display:flex;gap:10px;align-items:flex-start;}
.fix-card h3::before{
  content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
  background:var(--lava-500);
}
.fix-card p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.70);line-height:1.85;}

/* ============ 口碑条 ============ */
.voice-rail{
  display:flex;gap:18px;overflow-x:auto;padding:4px 0 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.voice-rail::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--paper-000);border:1px solid var(--line-light);
  border-radius:var(--r-lg);padding:20px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.voice-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-800));
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-900);font-weight:700;font-size:14px;
}
.voice-name{font-size:14px;font-weight:600;color:var(--ink-900);}
.stars{color:var(--lava-500);font-size:13px;letter-spacing:.08em;}
.voice-card p{margin-top:14px;font-size:14px;color:var(--gray-600);line-height:1.8;}
.voice-time{margin-top:14px;font-size:12px;color:var(--gray-400);}
.rail-note{margin-top:6px;font-size:12.5px;color:var(--gray-400);}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;}
.faq-item{
  background:var(--paper-000);border:1px solid var(--line-light);
  border-radius:var(--r-md);overflow:hidden;
  transition:border-color .2s var(--ease);
}
.faq-item:hover{border-color:var(--volt-500);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:17px 56px 17px 20px;
  font-size:15.5px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--volt-500);transform:scaleY(0);transform-origin:top;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-size:20px;line-height:1;color:var(--gray-600);
  transition:transform .18s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--volt-800);transform:translateY(-50%) rotate(180deg);}
.faq-body{padding:0 20px 20px;color:var(--gray-600);font-size:14.5px;line-height:1.9;}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:rgba(255,255,255,.78);
  border-radius:var(--r-xl);
  padding:34px 28px;
}
.cta-band::before{
  content:"";position:absolute;top:-40%;left:-6%;width:52%;height:180%;
  background:linear-gradient(100deg,rgba(200,255,61,.12),rgba(200,255,61,0));
  transform:skewX(-14deg);
}
.cta-inner{position:relative;z-index:2;display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) auto;align-items:center;gap:32px;}}
.cta-inner h2{font-size:clamp(20px,2.4vw,27px);font-weight:700;color:var(--paper-000);line-height:1.35;}
.cta-inner p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.70);max-width:520px;}
.cta-steps{display:flex;gap:14px;flex-wrap:wrap;}
.cta-step{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.80);}
.cta-step i{
  width:26px;height:26px;border-radius:50%;flex:0 0 auto;
  background:var(--volt-500);color:var(--ink-900);
  display:flex;align-items:center;justify-content:center;
  font-style:normal;font-weight:700;font-size:13px;
}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch;}
@media (min-width:1024px){.cta-actions{min-width:220px;}}
.qr-box{
  border:1px dashed var(--line-dark);border-radius:var(--r-md);
  padding:12px;text-align:center;font-size:12px;color:var(--gray-400);
}
.qr-box span{
  display:block;width:64px;height:64px;margin:0 auto 8px;border-radius:10px;
  background:
    repeating-linear-gradient(90deg,rgba(255,255,255,.24) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.18) 0 6px,transparent 6px 12px),
    rgba(255,255,255,.06);
}

/* ============ 上/下一分类 ============ */
.cat-nav-bar{border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light);background:var(--paper-000);}
.cat-nav-inner{display:flex;justify-content:space-between;gap:16px;padding:20px 0;flex-wrap:wrap;}
.cat-nav-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--ink-800);
  padding:10px 20px;border-radius:999px;border:1px solid var(--line-light);
  transition:all .2s var(--ease);
}
.cat-nav-link:hover{border-color:var(--volt-500);background:rgba(200,255,61,.14);transform:translateY(-2px);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-name{font-size:16px;}
.footer-about{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:360px;}
.footer-col h3{
  font-size:14px;font-weight:700;color:var(--paper-000);
  margin-bottom:16px;letter-spacing:.02em;
}
.footer-col a{
  display:block;font-size:13.5px;color:rgba(255,255,255,.66);
  padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--volt-500);transform:translateX(4px);}
.footer-search{display:flex;gap:8px;margin-bottom:14px;}
.footer-search input{
  flex:1 1 auto;min-width:0;height:42px;padding:0 14px;
  border-radius:var(--r-md);border:1px solid var(--line-dark);
  background:rgba(255,255,255,.06);color:var(--paper-000);font-size:13.5px;outline:none;
  transition:border-color .2s var(--ease);
}
.footer-search input::placeholder{color:var(--gray-400);}
.footer-search input:focus{border-color:var(--volt-500);}
.footer-search button{
  flex:0 0 auto;height:42px;padding:0 18px;border:0;border-radius:var(--r-md);
  background:var(--volt-500);color:var(--ink-900);font-size:13.5px;font-weight:700;cursor:pointer;
  transition:background-color .2s var(--ease);
}
.footer-search button:hover{background:var(--volt-600);}
.footer-qr{
  border:1px dashed var(--line-dark);border-radius:var(--r-md);
  padding:14px;font-size:12px;color:var(--gray-400);text-align:center;
}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--gray-400);
}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-links a{color:rgba(255,255,255,.66);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--volt-500);}

/* ============ 响应式：导航 ============ */
@media (max-width:1023px){
  .header-main{grid-template-columns:auto 1fr auto;gap:14px;}
  .nav-search{display:none;}
  .mobile-search{display:block;}
  .nav-toggle{display:inline-flex;}
  .header-right .btn{display:none;}
  .nav-links{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-900);
    padding:8px 20px 22px;
    border-top:1px solid var(--line-dark);
    box-shadow:0 16px 48px rgba(0,0,0,.45);
    max-height:calc(100vh - 72px);overflow-y:auto;
  }
  body.nav-open .nav-links{display:flex;}
  .nav-link{padding:15px 0;font-size:16px;border-bottom:1px solid var(--line-dark);}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--volt-500);}
}
@media (max-width:767px){
  .page-banner{aspect-ratio:auto;min-height:330px;}
  .banner-content{padding-bottom:32px;padding-top:44px;}
  .section{padding:44px 0;}
  .intro-card{padding:22px;}
  .check-item{grid-template-columns:44px 28px minmax(0,1fr);gap:12px;padding:18px 0;}
  .check-num{font-size:28px;}
  .voice-card{flex:0 0 250px;}
  .cta-band{padding:26px 20px;}
  .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .cat-nav-inner{flex-direction:column;}
  .cat-nav-link{width:100%;justify-content:space-between;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --live:#FF2E4D;
  --ok:#22B573;
  --disabled:#9AA1AB;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --container:1280px;
  --shadow-dark:0 16px 48px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(15,18,22,.08);
  --shadow-light-hover:0 14px 34px rgba(15,18,22,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","Archivo","HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.8;
  color:var(--ink-800);
  background:var(--paper-000);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.3;}
:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:768px){.container{padding:0 32px;}}
@media(min-width:1024px){.container{padding:0 48px;}}

/* ---------- 通用元素 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--volt-500);color:var(--ink-900);border:1px solid var(--volt-500);}
.btn-primary:hover{background:var(--volt-600);border-color:var(--volt-600);transform:translateY(-2px);box-shadow:0 10px 24px rgba(168,224,30,.28);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--paper-000);border:1px solid var(--line-dark);}
.btn-ghost:hover{background:rgba(200,255,61,.08);border-color:var(--volt-500);color:var(--volt-500);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline{background:transparent;color:var(--ink-800);border:1px solid var(--line-light);}
.btn-outline:hover{background:rgba(200,255,61,.16);border-color:var(--volt-600);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn:disabled,.btn[disabled]{background:var(--disabled);border-color:var(--disabled);color:#fff;cursor:not-allowed;transform:none;box-shadow:none;}

.tag{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 10px;
  border-radius:var(--r-sm);
  border:1px solid var(--line-light);
  background:var(--paper-050);
  color:var(--gray-600);
  font-size:12px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
}
.tag-volt{border-color:rgba(168,224,30,.5);background:rgba(200,255,61,.18);color:var(--volt-800);}

.section{padding:56px 0;}
@media(min-width:768px){.section{padding:64px 0;}}
@media(min-width:1024px){.section{padding:80px 0;}}
.section-dark{background:var(--ink-900);color:var(--paper-000);}
.section-soft{background:var(--paper-050);}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.sec-title{font-size:clamp(22px,2.6vw,28px);font-weight:800;position:relative;padding-left:14px;}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--volt-500);}
.section-dark .sec-title::before{background:var(--volt-500);}
.sec-desc{margin-top:10px;color:var(--gray-600);font-size:15px;max-width:640px;}
.section-dark .sec-desc{color:rgba(255,255,255,.68);}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink-800);border-bottom:2px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease);}
.text-link span{transition:transform .2s var(--ease);}
.text-link:hover{color:var(--volt-800);border-color:var(--volt-500);}
.text-link:hover span{transform:translateX(4px);}
.section-dark .text-link{color:var(--volt-500);}
.section-dark .text-link:hover{color:var(--volt-600);border-color:var(--volt-600);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(0,0,0,.5);}
.nav-shell{
  display:grid;
  grid-template-columns:1fr auto;
  align-items:center;
  gap:12px;
  min-height:64px;
  padding:10px 0;
}
@media(min-width:1024px){
  .nav-shell{
    grid-template-columns:auto minmax(320px,1fr) auto;
    gap:28px;
    min-height:72px;
    padding:0;
  }
}
.logo{display:flex;align-items:center;gap:10px;color:var(--paper-000);}
.logo-mark{
  position:relative;
  width:38px;height:38px;flex:0 0 38px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--volt-500),var(--volt-600) 55%,#5f8f00);
  overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;left:-14px;top:50%;width:52px;height:52px;
  border:3px solid rgba(14,17,22,.72);border-radius:50%;
  transform:translateY(-50%);
}
.logo-mark::after{
  content:"";position:absolute;right:7px;top:7px;width:12px;height:22px;border-radius:4px;
  background:var(--ink-900);opacity:.85;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:800;letter-spacing:.01em;}
.logo-sub{font-size:11px;color:rgba(255,255,255,.6);font-weight:500;}
@media(min-width:1024px){.logo-name{font-size:18px;}}

.nav-search{grid-column:1 / -1;order:3;}
@media(min-width:1024px){.nav-search{grid-column:auto;order:0;}}
.search-field{
  display:flex;align-items:center;
  gap:10px;
  width:100%;
  height:46px;
  padding:0 6px 0 16px;
  border-radius:999px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-field:focus-within{border-color:var(--volt-500);box-shadow:0 0 0 2px rgba(200,255,61,.28);}
.search-field svg{flex:0 0 20px;width:20px;height:20px;stroke:var(--gray-400);fill:none;stroke-width:2;stroke-linecap:round;}
.search-field input{
  flex:1 1 auto;min-width:0;
  height:100%;
  background:transparent;border:0;outline:none;
  color:var(--paper-000);
  font-size:15px;
}
.search-field input::placeholder{color:var(--gray-400);}
.search-field button{
  flex:0 0 auto;
  height:34px;padding:0 18px;
  border-radius:999px;
  background:var(--volt-500);
  color:var(--ink-900);
  font-size:14px;font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.search-field button:hover{background:var(--volt-600);transform:translateY(-2px);}
.search-field button:active{transform:translateY(1px);}

.nav-right{display:flex;align-items:center;gap:14px;}
.nav-links{display:none;}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:22px;}
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:rgba(255,255,255,.74);
  padding:6px 0;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--volt-500);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--paper-000);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--volt-500);}
.nav-link.active::after{transform:scaleX(1);}

.nav-cta{display:none;}
@media(min-width:1024px){.nav-cta{display:inline-flex;height:42px;padding:0 22px;}}

.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:var(--r-md);
  border:1px solid var(--line-dark);
  background:var(--ink-800);
}
.menu-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--paper-000);border-radius:2px;transition:transform .22s var(--ease),background-color .22s var(--ease);}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--paper-000);border-radius:2px;transition:transform .22s var(--ease);}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.menu-toggle[aria-expanded="true"] span{background:transparent;}
.menu-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
@media(min-width:1024px){.menu-toggle{display:none;}}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line-dark);
  background:var(--ink-900);
  padding:14px 0 20px;
}
.mobile-panel.open{display:block;}
.mobile-panel .nav-link{display:block;padding:12px 0;border-bottom:1px solid var(--line-dark);}
.mobile-panel .nav-link::after{display:none;}
.mobile-panel .btn{width:100%;margin-top:16px;}

/* ---------- 分类 chips ---------- */
.chips-bar{background:var(--paper-050);border-bottom:1px solid var(--line-light);}
.chips-scroll{
  display:flex;align-items:center;gap:10px;
  padding:12px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.chips-scroll::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-light);
  background:var(--paper-000);
  color:var(--gray-600);
  font-size:14px;font-weight:600;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
  white-space:nowrap;
}
.chip:hover{color:var(--ink-800);border-color:var(--volt-600);transform:translateY(-2px);}
.chip.active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900);}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(14,17,22,.95) 0%,rgba(14,17,22,.82) 48%,rgba(14,17,22,.6) 100%);
}
.page-banner::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;
  border:2px solid rgba(200,255,61,.16);border-radius:50%;
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding:56px 0 48px;color:var(--paper-000);}
@media(min-width:768px){.banner-inner{padding:72px 0 60px;}}
@media(min-width:1024px){.banner-inner{padding:92px 0 76px;}}
.banner-kicker{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(200,255,61,.42);
  background:rgba(200,255,61,.12);
  color:var(--volt-500);
  font-size:12px;font-weight:700;
  margin-bottom:18px;
}
.banner-kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lava-500);}
.page-banner h1{
  font-size:clamp(26px,3.8vw,46px);
  font-weight:800;
  line-height:1.18;
  max-width:900px;
  letter-spacing:.005em;
}
.banner-sub{margin-top:16px;font-size:16px;line-height:1.75;color:rgba(255,255,255,.76);max-width:680px;}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:14px;color:rgba(255,255,255,.68);}
.banner-meta span{display:inline-flex;align-items:center;gap:8px;}
.banner-meta strong{color:var(--volt-500);font-family:var(--font-num);font-size:18px;letter-spacing:.02em;}
.banner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
@media(max-width:519px){.banner-actions .btn{width:100%;}}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{background:var(--paper-050);border-bottom:1px solid var(--line-light);}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:12px 0;
  font-size:13px;color:var(--gray-600);
}
.breadcrumb a{color:var(--gray-600);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--volt-800);}
.breadcrumb .sep{color:var(--gray-400);}
.breadcrumb .current{color:var(--ink-800);font-weight:600;}

/* ---------- 分类简介 ---------- */
.cat-intro{
  display:grid;
  gap:20px;
  padding:32px 0 0;
}
@media(min-width:1024px){
  .cat-intro{grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;}
}
.cat-intro p{color:var(--gray-600);font-size:16px;}
.cat-intro p strong{color:var(--ink-800);}
.intro-side{
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  background:var(--paper-050);
  padding:20px 22px;
}
.intro-side h2{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--ink-800);}
.intro-side ul{margin-top:12px;display:grid;gap:10px;}
.intro-side li{display:flex;gap:10px;font-size:14px;color:var(--gray-600);}
.intro-side li::before{content:"";flex:0 0 6px;width:6px;height:6px;margin-top:9px;border-radius:2px;background:var(--volt-500);}

/* ---------- 主体布局：目录 + 编号清单 ---------- */
.layout{
  display:grid;
  gap:36px;
  padding:32px 0 0;
}
@media(min-width:1024px){
  .layout{grid-template-columns:300px minmax(0,1fr);gap:52px;padding-top:44px;}
}
.toc{
  align-self:start;
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  background:var(--paper-000);
  padding:20px 20px 22px;
  box-shadow:var(--shadow-light);
}
@media(min-width:1024px){
  .toc{position:sticky;top:96px;}
}
.toc h2{font-size:15px;font-weight:800;color:var(--ink-800);padding-bottom:12px;border-bottom:1px solid var(--line-light);}
.toc ol{margin-top:14px;display:grid;gap:2px;counter-reset:toc;}
.toc a{
  display:flex;gap:10px;
  padding:9px 10px;
  border-radius:var(--r-sm);
  font-size:14px;color:var(--gray-600);
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.toc a::before{
  counter-increment:toc;content:counter(toc,decimal-leading-zero);
  font-family:var(--font-num);font-size:14px;font-weight:700;
  color:var(--volt-800);
}
.toc a:hover{background:var(--paper-050);color:var(--ink-800);transform:translateX(3px);}
.toc-note{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line-light);
  font-size:13px;color:var(--gray-600);line-height:1.7;
}

.num-list{display:grid;}
.nitem{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:18px;
  padding:28px 0;
  border-bottom:1px solid var(--line-light);
  scroll-margin-top:120px;
}
.nitem:first-child{padding-top:6px;}
.nitem-num{
  font-family:var(--font-num);
  font-size:42px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1.5px var(--volt-600);
  letter-spacing:.02em;
}
@media(min-width:768px){
  .nitem{grid-template-columns:88px minmax(0,1fr);gap:26px;padding:36px 0;}
  .nitem-num{font-size:52px;}
}
.nitem h3{font-size:19px;font-weight:800;color:var(--ink-800);}
@media(min-width:768px){.nitem h3{font-size:21px;}}
.nitem p{margin-top:10px;font-size:15px;color:var(--gray-600);line-height:1.8;max-width:720px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 三步提醒设置 ---------- */
.steps{
  display:grid;
  gap:18px;
  margin-top:8px;
}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}}
.step-card{
  position:relative;
  border:1px solid var(--line-dark);
  border-radius:var(--r-lg);
  background:var(--ink-800);
  padding:26px 22px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.step-card:hover{transform:translateY(-6px);border-color:rgba(200,255,61,.5);box-shadow:var(--shadow-dark);}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  background:var(--volt-500);color:var(--ink-900);
  font-family:var(--font-num);font-size:17px;font-weight:700;
}
.step-card h3{margin-top:16px;font-size:18px;font-weight:700;color:var(--paper-000);}
.step-card p{margin-top:10px;font-size:14px;color:rgba(255,255,255,.68);line-height:1.75;}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;gap:18px;margin-top:8px;}
@media(min-width:520px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}}
.stat-card{
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  background:var(--paper-000);
  padding:24px 22px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-light-hover);border-color:rgba(168,224,30,.6);}
.stat-num{font-family:var(--font-num);font-size:36px;font-weight:700;color:var(--volt-800);line-height:1;}
.stat-card h3{margin-top:12px;font-size:16px;font-weight:800;}
.stat-card p{margin-top:8px;font-size:14px;color:var(--gray-600);line-height:1.7;}

/* ---------- 图文区块 ---------- */
.media-block{display:grid;gap:24px;align-items:center;}
@media(min-width:1024px){.media-block{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:52px;}}
.media-figure{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--shadow-light-hover);
  background:var(--paper-100);
}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.media-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:26px 20px 16px;
  font-size:13px;color:rgba(255,255,255,.86);
  background:linear-gradient(to top,rgba(14,17,22,.82),rgba(14,17,22,0));
}
.media-body h2{font-size:clamp(22px,2.6vw,28px);font-weight:800;}
.media-body p{margin-top:14px;font-size:15px;color:var(--gray-600);line-height:1.85;}
.check-list{margin-top:20px;display:grid;gap:12px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-800);}
.check-list li::before{
  content:"";flex:0 0 18px;width:18px;height:18px;margin-top:6px;
  border-radius:50%;
  background:rgba(200,255,61,.28);
  box-shadow:inset 0 0 0 1.5px var(--volt-600);
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;margin-top:8px;}
.faq-item{
  border:1px solid var(--line-light);
  border-radius:var(--r-md);
  background:var(--paper-000);
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(168,224,30,.7);}
.faq-item[open]{box-shadow:var(--shadow-light);}
.faq-item summary{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:14px 52px 14px 18px;
  font-size:16px;font-weight:700;color:var(--ink-800);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:700;color:var(--volt-800);
  transition:transform .18s var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;
  background:var(--volt-500);
  transform:scaleY(0);transform-origin:top;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-answer{padding:0 18px 20px 18px;font-size:15px;color:var(--gray-600);line-height:1.85;border-top:1px solid var(--line-light);padding-top:16px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;
  background:var(--ink-900);
  color:var(--paper-000);
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;top:-80px;width:420px;height:420px;
  background:rgba(200,255,61,.08);
  transform:rotate(24deg);
  border-radius:80px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;
  border:2px solid rgba(200,255,61,.16);border-radius:50%;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;gap:28px;
  padding:56px 0;
}
@media(min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:48px;padding:72px 0;}
}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.28;}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);line-height:1.8;max-width:560px;}
.cta-marks{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-mark{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);
  font-size:14px;color:rgba(255,255,255,.82);
}
.cta-mark i{
  font-style:normal;
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;
  background:var(--volt-500);color:var(--ink-900);
  font-family:var(--font-num);font-size:13px;font-weight:700;
}
.cta-side{
  display:grid;gap:18px;
  border:1px solid var(--line-dark);
  border-radius:var(--r-xl);
  background:var(--ink-800);
  padding:26px 24px;
}
.cta-side h3{font-size:17px;font-weight:700;}
.cta-side p{font-size:14px;color:rgba(255,255,255,.68);}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media(max-width:519px){.cta-actions .btn{width:100%;}}
.qr-box{
  display:flex;align-items:center;gap:14px;
  padding-top:16px;border-top:1px solid var(--line-dark);
}
.qr-placeholder{
  flex:0 0 74px;width:74px;height:74px;border-radius:var(--r-sm);
  border:1px dashed rgba(255,255,255,.28);
  display:flex;align-items:center;justify-content:center;
  font-size:11px;color:rgba(255,255,255,.6);text-align:center;line-height:1.4;
  background:rgba(255,255,255,.04);
}
.qr-box span{font-size:13px;color:rgba(255,255,255,.68);line-height:1.6;}

/* ---------- 分类切换 ---------- */
.cat-nav{
  display:grid;gap:14px;
  padding:40px 0 56px;
}
@media(min-width:768px){.cat-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:48px 0 72px;}}
.cat-nav-item{
  display:flex;flex-direction:column;gap:8px;
  border:1px solid var(--line-light);
  border-radius:var(--r-lg);
  background:var(--paper-000);
  padding:20px 22px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.cat-nav-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-light-hover);border-color:rgba(168,224,30,.7);}
.cat-nav-label{font-size:12px;font-weight:700;color:var(--gray-400);letter-spacing:.04em;}
.cat-nav-title{font-size:17px;font-weight:800;color:var(--ink-800);}
.cat-nav-item.next{text-align:right;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 22px;}
.footer-grid{display:grid;gap:32px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand .logo{margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.8;max-width:340px;color:rgba(255,255,255,.66);}
.footer-col h3{font-size:15px;font-weight:800;color:var(--paper-000);margin-bottom:16px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.7);padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--volt-500);transform:translateX(3px);}
.footer-search{display:flex;gap:8px;margin-bottom:14px;}
.footer-search input{
  flex:1 1 auto;min-width:0;height:42px;
  padding:0 14px;
  border-radius:var(--r-md);
  border:1px solid var(--line-dark);
  background:var(--ink-800);
  color:var(--paper-000);
  font-size:14px;
  outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-search input::placeholder{color:var(--gray-400);}
.footer-search input:focus{border-color:var(--volt-500);box-shadow:0 0 0 2px rgba(200,255,61,.22);}
.footer-search button{
  flex:0 0 auto;height:42px;padding:0 18px;
  border-radius:var(--r-md);
  background:var(--volt-500);color:var(--ink-900);
  font-size:14px;font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.footer-search button:hover{background:var(--volt-600);transform:translateY(-2px);}
.footer-qr{
  width:110px;height:110px;
  border-radius:var(--r-md);
  border:1px dashed rgba(255,255,255,.24);
  display:flex;align-items:center;justify-content:center;
  text-align:center;
  font-size:12px;line-height:1.5;color:rgba(255,255,255,.58);
  background:rgba(255,255,255,.04);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{color:rgba(255,255,255,.6);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--volt-500);}

@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --live:#FF2E4D;
  --ok:#22B573;
  --off:#9AA1AB;
  --container:1280px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --shadow-dark:0 16px 48px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(15,18,22,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-800);
  background:var(--paper-050);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.25}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
strong{font-weight:700;color:var(--ink-900)}
:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px}
::selection{background:var(--volt-500);color:var(--ink-900)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 48px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:13px 26px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform 220ms var(--ease),background-color 220ms var(--ease),color 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.btn-primary{background:var(--volt-500);color:var(--ink-900)}
.btn-primary:hover{background:var(--volt-600);transform:translateY(-2px);box-shadow:0 12px 26px rgba(200,255,61,.28)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line-light);color:var(--ink-900)}
.btn-ghost:hover{background:rgba(200,255,61,.16);border-color:var(--volt-500);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-outline-light:hover{background:rgba(200,255,61,.14);border-color:var(--volt-500);color:var(--volt-500);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--volt-800);font-weight:600;font-size:15px;border-bottom:1px solid transparent;transition:gap 220ms var(--ease),border-color 220ms var(--ease)}
.text-link:hover{gap:12px;border-bottom-color:var(--volt-600)}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink-900);border-bottom:1px solid var(--line-dark)}
.header-main{
  display:grid;grid-template-columns:auto minmax(280px,1fr) auto;
  align-items:center;gap:28px;min-height:76px;
}
.logo{display:inline-flex;align-items:center;gap:12px;flex:none}
.logo-mark{
  position:relative;width:36px;height:36px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--volt-500),var(--volt-600) 58%,#8FC400);
  box-shadow:0 6px 18px rgba(200,255,61,.22);
}
.logo-mark::before{
  content:"";position:absolute;left:8px;top:9px;width:20px;height:18px;
  border:2px solid var(--ink-900);border-radius:9px 9px 4px 4px;border-bottom-color:transparent;
}
.logo-mark::after{
  content:"";position:absolute;left:15px;bottom:7px;width:7px;height:7px;border-radius:50%;
  background:var(--ink-900);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:.2px}
.logo-sub{font-size:11.5px;color:var(--gray-400);letter-spacing:.4px}
.search-form{
  display:flex;align-items:center;gap:8px;width:100%;max-width:560px;margin:0 auto;
  background:var(--ink-800);border:1px solid var(--line-dark);
  border-radius:999px;padding:5px 5px 5px 16px;
  transition:border-color 220ms var(--ease),background-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.search-form:focus-within{background:var(--ink-700);border-color:var(--volt-500);box-shadow:0 0 0 3px rgba(200,255,61,.18)}
.search-icon{width:20px;height:20px;flex:none;color:var(--gray-400)}
.search-form input{
  flex:1;min-width:0;background:transparent;border:0;height:38px;
  font-size:15px;color:#fff;
}
.search-form input::placeholder{color:var(--gray-400)}
.search-form input:focus{outline:none}
.search-form button{
  border:0;border-radius:999px;background:var(--volt-500);color:var(--ink-900);
  font-weight:700;font-size:14px;padding:10px 20px;cursor:pointer;flex:none;
  transition:background-color 200ms var(--ease),transform 200ms var(--ease);
}
.search-form button:hover{background:var(--volt-600);transform:translateY(-2px)}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-dark);background:var(--ink-800);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform 220ms var(--ease),opacity 220ms var(--ease)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.header-sub{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:2px 0 14px;border-top:1px solid var(--line-dark);
}
.nav-links{display:flex;align-items:center;gap:26px;flex-wrap:wrap;padding-top:10px}
.nav-link{
  position:relative;font-size:15px;color:rgba(255,255,255,.72);
  padding:6px 0;border-bottom:2px solid transparent;
  transition:color 200ms var(--ease),border-color 200ms var(--ease);
}
.nav-link:hover{color:#fff;border-bottom-color:var(--volt-500)}
.nav-link.active{color:#fff;border-bottom-color:var(--volt-500)}
.header-note{font-size:13px;color:var(--gray-400);white-space:nowrap;padding-top:10px}

/* ---------- 分类快捷条 ---------- */
.chip-bar{background:var(--paper-000);border-bottom:1px solid var(--line-light)}
.chip-row{display:flex;gap:10px;overflow-x:auto;padding:14px 20px;scrollbar-width:none}
.chip-row::-webkit-scrollbar{display:none}
@media (min-width:768px){.chip-row{padding:14px 32px}}
@media (min-width:1024px){.chip-row{padding:16px 48px}}
.chip{
  flex:none;display:inline-flex;align-items:center;gap:6px;
  padding:8px 18px;border-radius:999px;border:1px solid var(--line-light);
  background:var(--paper-050);font-size:14px;color:var(--gray-600);
  transition:all 200ms var(--ease);
}
.chip:hover{border-color:var(--volt-500);color:var(--ink-900);transform:translateY(-1px)}
.chip.active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900);font-weight:600}

/* ---------- 首屏横幅 ---------- */
.hero-banner{
  position:relative;overflow:hidden;background:var(--ink-900);
  display:flex;align-items:center;min-height:340px;
  padding:clamp(52px,8vw,104px) 0;
}
.hero-banner .banner-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.42;filter:saturate(.85);
}
.hero-banner::before{
  content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;
  border-radius:50%;border:2px solid rgba(200,255,61,.22);
}
.hero-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,17,22,.95) 0%,rgba(14,17,22,.80) 46%,rgba(14,17,22,.52) 100%);
}
.banner-inner{position:relative;z-index:2;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1px;color:var(--volt-500);
  text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--volt-500);border-radius:2px}
.hero-banner h1{
  color:#fff;font-size:clamp(28px,4.4vw,50px);font-weight:800;line-height:1.15;letter-spacing:.5px;
}
.banner-sub{margin-top:18px;font-size:clamp(15px,1.6vw,17px);color:rgba(255,255,255,.76);max-width:640px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--paper-000);border-bottom:1px solid var(--line-light)}
.crumbs{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--gray-600);padding:14px 0}
.crumbs a{color:var(--gray-600);transition:color 180ms var(--ease)}
.crumbs a:hover{color:var(--volt-800)}
.crumbs .sep{color:var(--line-light)}
.crumbs .current{color:var(--ink-900);font-weight:600}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-alt{background:var(--paper-000);border-top:1px solid var(--line-light);border-bottom:1px solid var(--line-light)}
.section-head{max-width:760px;margin-bottom:38px}
.section-tag{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1.2px;
  color:var(--volt-800);background:rgba(200,255,61,.28);
  padding:5px 14px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-desc{margin-top:12px;color:var(--gray-600);font-size:15.5px}

/* ---------- 引导区 ---------- */
.intro-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
.intro-media{
  margin:0;border-radius:var(--r-xl);overflow:hidden;
  box-shadow:var(--shadow-light);position:relative;background:var(--paper-100);
}
.intro-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.intro-copy h2{font-size:clamp(22px,2.6vw,30px)}
.intro-copy .lead{margin-top:14px;color:var(--gray-600);font-size:16px}
.check-list{margin-top:22px;display:grid;gap:14px}
.check-list li{
  position:relative;padding-left:30px;font-size:15.5px;color:var(--ink-800);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:50%;
  background:rgba(200,255,61,.45);
  box-shadow:inset 0 0 0 1px rgba(79,107,0,.25);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:12px;width:6px;height:10px;
  border-right:2px solid var(--volt-800);border-bottom:2px solid var(--volt-800);
  transform:rotate(40deg);
}
.intro-copy .text-link{margin-top:26px}

/* ---------- 对照表 ---------- */
.table-wrap{
  overflow-x:auto;background:var(--paper-000);border-radius:var(--r-lg);
  box-shadow:var(--shadow-light);border:1px solid var(--line-light);
}
.compare-table{width:100%;min-width:800px;border-collapse:separate;border-spacing:0;font-size:15px}
.compare-table caption{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.compare-table th,.compare-table td{padding:16px 20px;text-align:left;vertical-align:middle}
.compare-table thead th{
  background:var(--ink-800);color:#fff;font-weight:600;font-size:15px;
  border-bottom:0;white-space:nowrap;
}
.compare-table thead th:first-child{background:var(--ink-900);color:var(--volt-500)}
.compare-table tbody th{
  font-weight:700;color:var(--ink-900);background:var(--paper-050);
  width:150px;border-bottom:1px solid var(--line-light);white-space:nowrap;
}
.compare-table tbody td{border-bottom:1px solid var(--line-light);color:var(--ink-800)}
.compare-table tbody tr{transition:background-color 200ms var(--ease)}
.compare-table tbody tr:hover td{background:#FBFDF3}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0}
.mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:17px;height:17px;border-radius:50%;margin-right:8px;
  background:rgba(200,255,61,.42);color:var(--volt-800);
  font-size:11px;font-weight:700;flex:none;vertical-align:-3px;
}
.table-note{margin-top:14px;font-size:13.5px;color:var(--gray-400)}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  background:var(--paper-000);border:1px solid var(--line-light);
  border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item:hover{border-color:#C9CDBE}
.faq-item[open]{border-color:#C9CDBE;box-shadow:var(--shadow-light)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:15px 22px;font-size:16px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--volt-500);border-radius:0 3px 3px 0;
  transform:scaleY(0);transform-origin:center;transition:transform 200ms var(--ease);
}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item summary::after{
  content:"";width:14px;height:14px;flex:none;
  background-image:linear-gradient(var(--gray-400),var(--gray-400)),linear-gradient(var(--gray-400),var(--gray-400));
  background-size:14px 2px,2px 14px;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform 180ms var(--ease),background-size 180ms var(--ease);
}
.faq-item[open] summary::after{background-size:14px 2px,2px 0;transform:rotate(180deg)}
.faq-body{padding:0 22px 20px;color:var(--gray-600);font-size:15.5px;line-height:1.85}
.faq-body p{margin:0}
.faq-body p + p{margin-top:10px}

/* ---------- CTA 条 ---------- */
.cta-bar{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:64px 0}
.cta-bar::before{
  content:"";position:absolute;top:-60%;right:-6%;width:56%;height:220%;
  background:linear-gradient(120deg,rgba(200,255,61,.16),rgba(200,255,61,0) 62%);
  transform:skewX(-14deg);pointer-events:none;
}
.cta-bar::after{
  content:"";position:absolute;bottom:-40%;left:-10%;width:34%;height:160%;
  background:linear-gradient(120deg,rgba(255,92,36,.18),rgba(255,92,36,0) 70%);
  transform:skewX(-14deg);pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr 1fr auto;gap:40px;align-items:center;
}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.5vw,30px)}
.cta-copy p{margin-top:12px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:460px}
.cta-steps{display:flex;flex-wrap:wrap;gap:18px}
.cta-steps li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.82)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;flex:none;
  background:var(--volt-500);color:var(--ink-900);font-size:13px;font-weight:700;
}
.cta-action{display:flex;align-items:center;gap:18px}
.qr-box{
  width:96px;height:96px;border:1px dashed var(--line-dark);border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11.5px;line-height:1.4;color:var(--gray-400);flex:none;
}

/* ---------- 上一 / 下一分类 ---------- */
.pager-bar{border-top:1px solid var(--line-light);background:var(--paper-000)}
.pager-inner{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:28px 0}
.pager-link{
  display:flex;flex-direction:column;gap:6px;padding:18px 22px;
  border:1px solid var(--line-light);border-radius:var(--r-lg);background:var(--paper-050);
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.pager-link:hover{transform:translateY(-3px);border-color:var(--volt-500);box-shadow:var(--shadow-light)}
.pager-link.next{align-items:flex-end;text-align:right}
.pager-dir{font-size:12.5px;color:var(--gray-400);letter-spacing:.6px}
.pager-title{font-size:16px;font-weight:600;color:var(--ink-900)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:60px 0 26px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-name{color:#fff}
.footer-about{margin-top:16px;max-width:340px;line-height:1.85;color:rgba(255,255,255,.6)}
.footer-col h3{font-size:15px;color:#fff;margin-bottom:14px;font-weight:600}
.footer-col a{display:block;padding:5px 0;color:rgba(255,255,255,.72);transition:color 180ms var(--ease),transform 180ms var(--ease)}
.footer-col a:hover{color:var(--volt-500);transform:translateX(3px)}
.footer-search{
  display:flex;align-items:center;background:var(--ink-800);
  border:1px solid var(--line-dark);border-radius:999px;padding:4px;margin-top:12px;
}
.footer-search input{flex:1;min-width:0;background:transparent;border:0;padding:8px 14px;color:#fff;font-size:14px}
.footer-search input::placeholder{color:var(--gray-400)}
.footer-search input:focus{outline:none}
.footer-search button{
  border:0;border-radius:999px;background:var(--volt-500);color:var(--ink-900);
  font-weight:700;font-size:13.5px;padding:8px 16px;cursor:pointer;flex:none;
  transition:background-color 200ms var(--ease);
}
.footer-search button:hover{background:var(--volt-600)}
.footer-qr{
  margin-top:14px;width:104px;height:104px;border:1px dashed var(--line-dark);border-radius:var(--r-md);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:11.5px;line-height:1.4;color:var(--gray-400);
}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);margin-top:44px;padding-top:22px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-links a{color:rgba(255,255,255,.72);transition:color 180ms var(--ease)}
.footer-links a:hover{color:var(--volt-500)}

/* ---------- 响应式 ---------- */
@media (min-width:768px){
  .intro-grid{grid-template-columns:1fr 1fr;gap:48px}
}
@media (max-width:1023px){
  .header-main{grid-template-columns:1fr auto;row-gap:12px;padding:14px 0;min-height:0}
  .header-search{grid-column:1 / -1;max-width:none;order:3}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .header-sub{display:block;padding-bottom:8px}
  .header-note{display:none}
  .nav-links{
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding-top:6px;padding-bottom:10px;
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:13px 0;border-bottom:1px solid var(--line-dark)}
  .nav-link:hover,.nav-link.active{border-bottom-color:var(--volt-500)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-action{justify-content:flex-start;flex-wrap:wrap}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:44px 0}
  .section-head{margin-bottom:26px}
  .hero-banner{min-height:280px}
  .banner-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .pager-inner{grid-template-columns:1fr;padding:20px 0}
  .pager-link.next{align-items:flex-start;text-align:left}
  .faq-item summary{padding:14px 16px;font-size:15.5px}
  .faq-body{padding:0 16px 18px;font-size:15px}
  .cta-bar{padding:48px 0}
  .logo-name{font-size:16px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .search-form button{padding:10px 14px}
  .chip-row{padding:12px 16px}
  .qr-box{width:100%;height:76px}
  .cta-action{width:100%}
  .cta-action .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#0E1116;
  --ink-800:#151A21;
  --ink-700:#20262F;
  --paper-000:#FFFFFF;
  --paper-050:#F4F5F1;
  --paper-100:#E9EBE4;
  --volt-500:#C8FF3D;
  --volt-600:#A8E01E;
  --volt-800:#4F6B00;
  --lava-500:#FF5C24;
  --lava-600:#E1440F;
  --gray-600:#5B636E;
  --gray-400:#8A929E;
  --line-dark:rgba(255,255,255,.10);
  --line-light:#DFE2D9;
  --live:#FF2E4D;
  --ok:#22B573;
  --container:1280px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --shadow-dark:0 16px 48px rgba(0,0,0,.45);
  --shadow-light:0 8px 24px rgba(15,18,22,.08);
  --shadow-light-hover:0 14px 34px rgba(15,18,22,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-800);
  background:var(--paper-000);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.25;font-weight:700;color:var(--ink-900)}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--volt-500);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ 容器 / 板块 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 48px}}

.section{padding:40px 0}
@media (min-width:768px){.section{padding:56px 0}}
@media (min-width:1024px){.section{padding:72px 0}}
.section--tight{padding:32px 0}
@media (min-width:1024px){.section--tight{padding:48px 0}}
.section--dark{background:var(--ink-900);color:rgba(255,255,255,.78)}
.section--dark h2,.section--dark h3{color:#fff}
.section--paper{background:var(--paper-050)}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
@media (min-width:768px){.section-head{margin-bottom:36px}}
.section-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;background:var(--volt-500)}
.section-head p{margin-top:8px;padding-left:16px;color:var(--gray-600);font-size:15px;max-width:62ch}
.section--dark .section-head p{color:rgba(255,255,255,.62)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink-900);white-space:nowrap}
.section--dark .link-more{color:var(--volt-500)}
.link-more svg{transition:transform .22s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}
.link-more:hover{color:var(--volt-800)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:700;font-size:15px;letter-spacing:.01em;
  padding:13px 26px;border:1px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
  will-change:transform;
}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-primary{background:var(--volt-500);color:var(--ink-900);box-shadow:0 6px 18px rgba(200,255,61,.22)}
.btn-primary:hover{background:var(--volt-600);transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,255,61,.3)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(200,255,61,.14);border-color:var(--volt-500);color:#fff}
.btn-outline{background:transparent;color:var(--ink-900);border-color:var(--line-light)}
.btn-outline:hover{background:rgba(200,255,61,.16);border-color:var(--volt-600)}
.btn[disabled]{opacity:.6;cursor:not-allowed;filter:saturate(.6)}

/* ============ 标签 / 徽章 ============ */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:700;line-height:1.6;letter-spacing:.02em}
.tag-volt{background:rgba(200,255,61,.2);color:var(--volt-800)}
.tag-lava{background:rgba(255,92,36,.12);color:var(--lava-600)}
.tag-dark{background:rgba(255,255,255,.08);color:rgba(255,255,255,.8)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--live);display:inline-block;box-shadow:0 0 0 3px rgba(255,46,77,.2)}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:120;background:rgba(14,17,22,.96);border-bottom:1px solid var(--line-dark);backdrop-filter:blur(10px)}
.nav-inner{display:grid;grid-template-columns:auto minmax(280px,1fr) auto;align-items:center;gap:20px;height:72px}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{display:inline-flex;flex-shrink:0;width:38px;height:38px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:17px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.logo-sub{font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.06em;white-space:nowrap}

.search-bar{
  position:relative;display:flex;align-items:center;gap:8px;
  width:100%;max-width:560px;margin:0 auto;height:46px;
  padding:0 6px 0 16px;border-radius:999px;
  background:var(--ink-800);border:1px solid var(--line-dark);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.search-bar:focus-within{border-color:var(--volt-500);box-shadow:0 0 0 3px rgba(200,255,61,.18);background:#12171E}
.search-icon{flex-shrink:0;width:19px;height:19px;color:var(--gray-400)}
.search-bar input{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:none;color:#fff;font-size:14px}
.search-bar input::placeholder{color:var(--gray-400);font-size:13.5px}
.search-bar input::-webkit-search-cancel-button{-webkit-appearance:none}
.search-bar button{
  flex-shrink:0;height:34px;padding:0 20px;border-radius:999px;
  background:var(--volt-500);color:var(--ink-900);font-size:13.5px;font-weight:700;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.search-bar button:hover{background:var(--volt-600);transform:translateY(-1px)}

.nav-right{display:flex;align-items:center;gap:14px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;padding:8px 10px;font-size:13.5px;color:rgba(255,255,255,.7);white-space:nowrap;border-radius:8px;transition:color .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:10px;right:10px;bottom:3px;height:2px;border-radius:2px;background:var(--volt-500);transform:scaleX(0);transform-origin:left center;transition:transform .22s var(--ease)}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff;font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{flex-shrink:0}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--line-dark);color:#fff;flex-shrink:0}
.nav-toggle:hover{background:rgba(255,255,255,.06)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .2s var(--ease),top .2s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-panel{display:none;border-top:1px solid var(--line-dark);background:var(--ink-900)}
.mobile-panel.open{display:block}
.mobile-panel .container{padding-top:12px;padding-bottom:18px}
.mobile-panel a{display:block;padding:12px 4px;color:rgba(255,255,255,.78);font-size:15px;border-bottom:1px solid var(--line-dark)}
.mobile-panel a:last-child{border-bottom:0}
.mobile-panel a.active{color:var(--volt-500);font-weight:700}
.mobile-panel a:hover{color:#fff}

@media (max-width:1180px) and (min-width:1024px){
  .nav-link{font-size:12.5px;padding:8px 7px}
  .nav-inner{gap:14px}
}
@media (max-width:1023px){
  .nav-inner{grid-template-columns:1fr;display:flex;flex-wrap:wrap;height:auto;padding:12px 0;gap:12px}
  .search-bar{order:3;flex:1 1 100%;max-width:none;margin:0}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right{margin-left:auto;gap:10px}
  .logo-sub{display:none}
}
@media (max-width:520px){
  .nav-cta{padding:9px 15px;font-size:13px}
  .logo-name{font-size:15px}
}

/* ============ 分类 chips ============ */
.chip-bar{background:var(--ink-800);border-bottom:1px solid var(--line-dark)}
.chip-scroll{display:flex;gap:10px;overflow-x:auto;padding-top:12px;padding-bottom:12px;scrollbar-width:none}
.chip-scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:7px 16px;border-radius:999px;font-size:13px;font-weight:600;
  color:rgba(255,255,255,.72);border:1px solid var(--line-dark);background:rgba(255,255,255,.03);
  transition:all .2s var(--ease);white-space:nowrap;
}
.chip:hover{color:#fff;border-color:rgba(200,255,61,.5)}
.chip.active{background:var(--volt-500);border-color:var(--volt-500);color:var(--ink-900)}

/* ============ 页面横幅 ============ */
.banner{position:relative;overflow:hidden;background:var(--ink-900);isolation:isolate}
.banner-media{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.48;z-index:0}
.banner-grid{position:absolute;inset:0;z-index:1;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:42px 42px;
  -webkit-mask-image:radial-gradient(120% 100% at 20% 40%,#000 0%,transparent 72%);
  mask-image:radial-gradient(120% 100% at 20% 40%,#000 0%,transparent 72%);
}
.banner-arc{position:absolute;right:-8%;bottom:-40%;width:640px;height:640px;z-index:1;opacity:.5;pointer-events:none}
.banner-mask{position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(14,17,22,.96) 0%,rgba(14,17,22,.8) 48%,rgba(14,17,22,.42) 100%)}
.banner-inner{position:relative;z-index:2;padding:56px 0 48px;min-height:300px;display:flex;flex-direction:column;justify-content:flex-end}
@media (min-width:1024px){.banner-inner{padding:80px 0 68px;min-height:360px}}
.banner .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--volt-500);margin-bottom:16px;text-transform:uppercase}
.banner h1{font-size:clamp(26px,3.9vw,46px);font-weight:800;line-height:1.15;color:#fff;max-width:20ch}
.banner .banner-sub{margin-top:16px;max-width:56ch;font-size:15px;color:rgba(255,255,255,.72);line-height:1.85}
.banner .banner-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* ============ 面包屑 ============ */
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--gray-600)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--gray-400)}
.breadcrumb a:hover{color:var(--volt-800)}
.breadcrumb [aria-current]{color:var(--ink-800);font-weight:600}

/* ============ 简介面板 ============ */
.intro-panel{display:grid;grid-template-columns:1fr;gap:28px;align-items:start}
@media (min-width:1024px){.intro-panel{grid-template-columns:1.55fr 1fr;gap:48px}}
.intro-panel h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:16px}
.intro-panel p{color:#3A424C;font-size:16px;line-height:1.95}
.intro-panel p+p{margin-top:14px}
.intro-side{background:var(--paper-050);border:1px solid var(--line-light);border-radius:var(--r-lg);padding:22px}
.intro-side h3{font-size:15px;letter-spacing:.02em;margin-bottom:14px;color:var(--ink-900)}
.intro-side li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--gray-600);padding:9px 0;border-bottom:1px dashed var(--line-light);line-height:1.7}
.intro-side li:last-child{border-bottom:0}
.intro-side .ok-mark{flex:0 0 auto;margin-top:6px;width:16px;height:16px;color:var(--volt-800)}

/* ============ 要点卡 ============ */
.fact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (min-width:768px){.fact-grid{grid-template-columns:repeat(4,1fr);gap:20px}}
.fact-card{background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-lg);padding:20px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.fact-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-light-hover);border-color:rgba(200,255,61,.7)}
.fact-num{font-size:30px;font-weight:800;line-height:1;color:var(--ink-900);font-family:"Barlow Condensed","HarmonyOS Sans SC",sans-serif;letter-spacing:.01em}
.fact-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--gray-600);margin-left:4px}
.fact-card h3{font-size:15px;margin:12px 0 6px;color:var(--ink-900)}
.fact-card p{font-size:13.5px;color:var(--gray-600);line-height:1.75}
.fact-bar{height:5px;border-radius:99px;background:var(--paper-100);margin-top:14px;overflow:hidden}
.fact-bar span{display:block;height:100%;border-radius:99px;background:var(--volt-500)}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px;padding-left:32px}
.timeline::before{content:"";position:absolute;left:9px;top:10px;bottom:10px;width:2px;border-radius:2px;background:linear-gradient(180deg,var(--volt-500) 0%,rgba(200,255,61,.45) 55%,rgba(200,255,61,.08) 100%)}
@media (min-width:768px){.timeline{padding-left:44px}.timeline::before{left:13px}}
.tl-node{position:relative;padding-bottom:38px}
.tl-node:last-child{padding-bottom:0}
.tl-node::before{
  content:"";position:absolute;left:-32px;top:6px;width:20px;height:20px;border-radius:50%;
  background:var(--paper-000);border:3px solid var(--volt-500);box-shadow:0 0 0 4px rgba(200,255,61,.2);
}
@media (min-width:768px){.tl-node::before{left:-44px;width:26px;height:26px;top:4px;border-width:4px}}
.tl-step{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--volt-800);text-transform:uppercase;margin-bottom:10px}
.tl-card{
  display:grid;grid-template-columns:1fr;gap:18px;
  background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:18px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
@media (min-width:768px){.tl-card{grid-template-columns:260px 1fr;gap:24px;padding:20px}}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-light-hover);border-color:rgba(200,255,61,.65)}
.tl-thumb{position:relative;border-radius:var(--r-md);overflow:hidden;background:var(--paper-100);aspect-ratio:4/3}
.tl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.tl-card:hover .tl-thumb img{transform:scale(1.04)}
.tl-body h3{font-size:17px;margin-bottom:8px;color:var(--ink-900)}
@media (min-width:768px){.tl-body h3{font-size:19px}}
.tl-body p{font-size:14.5px;color:var(--gray-600);line-height:1.85}
.tl-body .tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:700;color:var(--ink-900)}
.tl-link svg{transition:transform .22s var(--ease)}
.tl-link:hover{color:var(--volt-800)}
.tl-link:hover svg{transform:translateX(4px)}

/* ============ 深色场景区 ============ */
.scene-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.scene-grid{grid-template-columns:repeat(4,1fr);gap:20px}}
.scene-card{
  position:relative;background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--r-lg);
  padding:22px 20px;overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-5px);border-color:rgba(200,255,61,.5);background:#181E26}
.scene-card .scene-idx{position:absolute;right:14px;top:8px;font-size:44px;font-weight:800;line-height:1;color:rgba(255,255,255,.06);font-family:"Barlow Condensed",sans-serif}
.scene-card h3{font-size:16px;color:#fff;margin-bottom:10px;position:relative}
.scene-card p{font-size:13.5px;color:rgba(255,255,255,.62);line-height:1.8}
.scene-card .scene-tip{display:flex;align-items:flex-start;gap:8px;margin-top:14px;font-size:12.5px;color:var(--volt-500);line-height:1.7}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px;margin:0 auto}
.faq-item{background:var(--paper-000);border:1px solid var(--line-light);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.faq-item:hover{border-color:rgba(200,255,61,.75)}
.faq-item[open]{box-shadow:var(--shadow-light);border-color:var(--line-light)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 18px;font-size:15.5px;font-weight:600;color:var(--ink-900);
  position:relative;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:var(--volt-500);transform:scaleY(0);transform-origin:center;transition:transform .22s var(--ease)}
.faq-item[open] summary::before{transform:scaleY(1)}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--paper-100);color:var(--ink-800);font-size:16px;font-weight:700;line-height:1;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--volt-500);color:var(--ink-900);transform:rotate(180deg)}
.faq-body{padding:0 18px 18px 25px;font-size:14.5px;color:var(--gray-600);line-height:1.9}
@media (max-width:520px){
  .faq-item summary{font-size:14.5px;padding:12px 14px}
  .faq-body{padding:0 14px 16px 20px}
}

/* ============ CTA 通栏 ============ */
.cta-band{position:relative;background:var(--ink-900);overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;top:-30%;left:-6%;width:52%;height:170%;background:linear-gradient(120deg,rgba(200,255,61,.14),rgba(200,255,61,0));transform:skewX(-14deg);z-index:0}
.cta-band::after{content:"";position:absolute;right:-10%;bottom:-60%;width:44%;height:180%;background:linear-gradient(120deg,rgba(255,92,36,.12),rgba(255,92,36,0));transform:skewX(-14deg);z-index:0}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:26px;padding:44px 0}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.3fr 1fr auto;align-items:center;gap:40px;padding:56px 0}}
.cta-inner h2{color:#fff;font-size:clamp(21px,2.4vw,29px);margin-bottom:12px}
.cta-inner .cta-copy{color:rgba(255,255,255,.68);font-size:14.5px;max-width:52ch}
.cta-steps{display:flex;flex-wrap:wrap;gap:12px}
.cta-steps li{display:inline-flex;align-items:center;gap:9px;padding:9px 15px;border-radius:999px;border:1px solid var(--line-dark);background:rgba(255,255,255,.04);font-size:13.5px;color:rgba(255,255,255,.8);white-space:nowrap}
.cta-steps span{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background:var(--volt-500);color:var(--ink-900);font-size:11.5px;font-weight:800}
.cta-action{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.qr-box{
  width:88px;height:88px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.28);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:11px;color:rgba(255,255,255,.55);text-align:center;line-height:1.45;flex:0 0 auto;
}
@media (max-width:1023px){.cta-action .btn{width:100%}}

/* ============ 分类切换 ============ */
.pager{display:grid;grid-template-columns:1fr;gap:14px;padding:36px 0 0}
@media (min-width:640px){.pager{grid-template-columns:1fr 1fr}}
.pager-item{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;
  border:1px solid var(--line-light);border-radius:var(--r-lg);background:var(--paper-000);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.pager-item:hover{transform:translateY(-4px);border-color:rgba(200,255,61,.75);box-shadow:var(--shadow-light)}
.pager-item.next{text-align:right;align-items:flex-end}
.pager-label{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--gray-400)}
.pager-title{font-size:17px;font-weight:700;color:var(--ink-900)}
.pager-item:hover .pager-title{color:var(--volt-800)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:52px 0 0;margin-top:56px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .logo{margin-bottom:16px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:38ch}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-col a{display:block;font-size:13.5px;color:rgba(255,255,255,.66);padding:6px 0;width:fit-content}
.footer-col a:hover{color:var(--volt-500)}
.footer-search{display:flex;gap:8px;margin-bottom:16px}
.footer-search input{
  flex:1;min-width:0;height:42px;padding:0 14px;border-radius:var(--r-md);
  background:var(--ink-800);border:1px solid var(--line-dark);color:#fff;font-size:13.5px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.footer-search input::placeholder{color:var(--gray-400)}
.footer-search input:focus{border-color:var(--volt-500);box-shadow:0 0 0 3px rgba(200,255,61,.16)}
.footer-search button{height:42px;padding:0 18px;border-radius:var(--r-md);background:var(--volt-500);color:var(--ink-900);font-size:13.5px;font-weight:700;transition:background-color .2s var(--ease)}
.footer-search button:hover{background:var(--volt-600)}
.footer-qr{width:96px;height:96px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.24);display:flex;align-items:center;justify-content:center;text-align:center;font-size:11.5px;line-height:1.5;color:rgba(255,255,255,.5)}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-links a:hover{color:var(--volt-500)}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}