/* roulang page: index */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --brand:#00E5A0;
  --brand-deep:#00B37E;
  --brand-soft:rgba(0,229,160,.18);
  --brand-line:rgba(0,229,160,.35);
  --orange:#FF7A2F;
  --orange-soft:rgba(255,122,47,.14);
  --text:#E8EEF7;
  --text-2:#9BA9BF;
  --text-3:#6B7A90;
  --ok:#2BD27B;
  --warn:#FFB020;
  --err:#FF5A5F;
  --r-xl:24px;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 10px 30px -10px rgba(0,229,160,.55),0 0 0 1px rgba(0,229,160,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4,p,dl,dd,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.01em;
}
.section-head h2::before{
  content:"";
  display:inline-block;
  width:4px;height:20px;
  background:var(--brand);
  border-radius:2px;
  margin-right:14px;
  vertical-align:-3px;
}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:680px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;letter-spacing:.04em;font-weight:600;
}
.eyebrow.orange{background:var(--orange-soft);color:var(--orange);}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:relative;z-index:100;}
.nav-shell{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:min(1180px,calc(100% - 32px));
  height:62px;
  display:flex;align-items:center;gap:18px;
  padding:0 10px 0 22px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 14px 34px -22px rgba(0,0,0,.9);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
  z-index:100;
}
.nav-shell.scrolled{
  background:rgba(10,16,28,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 20px 40px -20px rgba(0,0,0,.95);
}
.logo{display:flex;flex-direction:column;justify-content:center;line-height:1.1;flex:0 0 auto;}
.logo-mark{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.logo-sub{font-size:10px;letter-spacing:.08em;color:var(--text-3);margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:999px;
  font-size:14px;color:rgba(255,255,255,.60);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-links a.active{background:var(--brand);color:#04120C;font-weight:600;}
.nav-links a.active:hover::after{display:none;}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:999px;margin-left:auto;
  border:1px solid rgba(255,255,255,.16);
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:#fff;border-radius:2px;position:relative;transition:transform .2s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:1.5px;background:#fff;border-radius:2px;transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  border:1px solid transparent;
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand-deep),var(--brand));
  color:#04120C;
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -10px rgba(0,229,160,.6);}
.btn-ghost{
  background:transparent;color:var(--text);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
  padding:4px 0;
}
.btn-text svg{transition:transform .2s var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none;}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:max(640px,88vh);
  display:flex;align-items:center;
  padding:150px 0 90px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,11,20,.86) 0%,rgba(7,11,20,.78) 45%,rgba(7,11,20,1) 100%),
    radial-gradient(900px 480px at 78% 30%,rgba(0,229,160,.10),transparent 70%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
}
.hero-copy h1{
  margin-top:22px;
  font-size:clamp(28px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:16em;
}
.hero-sub{
  margin-top:20px;
  font-size:clamp(16px,1.5vw,18px);
  color:var(--text-2);
  max-width:560px;
  line-height:1.8;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:0 14px;
  margin-top:34px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
  letter-spacing:.04em;
}
.hero-trust span{display:inline-flex;align-items:center;gap:14px;}
.hero-trust span:not(:last-child)::after{content:"";width:1px;height:12px;background:var(--line-strong);display:inline-block;}
.hero-trust b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;}

.hero-panel{
  position:relative;
  padding:26px;
  border-radius:var(--r-xl);
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 30px 60px -34px rgba(0,0,0,.95);
}
.phone-frame{
  position:relative;
  width:min(270px,100%);
  margin:0 auto;
  padding:10px;
  border-radius:34px;
  background:#0A1120;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:0 24px 50px -28px rgba(0,0,0,.95);
}
.phone-frame img{
  width:100%;
  aspect-ratio:9/19;
  object-fit:cover;
  border-radius:26px;
}
.phone-notch{
  position:absolute;top:18px;left:50%;transform:translateX(-50%);
  width:64px;height:6px;border-radius:999px;background:rgba(255,255,255,.18);
}
.rating-chip{
  position:absolute;left:-14px;bottom:34px;
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:var(--r-md);
  background:rgba(17,26,43,.92);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow);
}
.rating-chip .star{color:var(--brand);display:flex;gap:2px;}
.rating-chip .score{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1;}
.rating-chip .meta{font-size:11px;color:var(--text-3);letter-spacing:.04em;margin-top:4px;}

/* ============ 价值带 ============ */
.value-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:var(--gap);
}
.v-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  display:flex;flex-direction:column;gap:14px;
  box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.v-card:hover{border-color:var(--brand-line);transform:translateY(-2px);}
.v-card.wide{grid-column:span 7;}
.v-card.narrow{grid-column:span 5;}
.v-card.half{grid-column:span 6;}
.v-icon{
  width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  flex:0 0 auto;
}
.v-card h3{font-size:18px;font-weight:600;line-height:1.4;}
.v-card p{color:var(--text-2);font-size:14.5px;line-height:1.75;}
.v-card.wide{background:linear-gradient(150deg,rgba(0,229,160,.08),rgba(17,26,43,1) 58%);}
.v-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;
  background:rgba(255,255,255,.06);color:var(--text-2);
  border:1px solid var(--line);
  font-variant-numeric:tabular-nums;
}
.chip.brand{background:var(--brand-soft);color:var(--brand);border-color:transparent;}
.chip.orange{background:var(--orange-soft);color:var(--orange);border-color:transparent;}

/* ============ 截图轮播 ============ */
.shots-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.shots-nav{display:flex;gap:10px;}
.circle-btn{
  width:44px;height:44px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  color:var(--text-2);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.circle-btn:hover{color:var(--brand);border-color:var(--brand-line);transform:translateY(-2px);}
.circle-btn:active{transform:translateY(1px);}
.shot-track{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scrollbar-width:none;
  padding-bottom:6px;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot{
  flex:0 0 calc((100% - 60px)/4);
  scroll-snap-align:start;
}
.shot-img{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  background:linear-gradient(160deg,#0C1322,#111A2B);
  border:1px solid var(--line);
}
.shot-img img{
  width:100%;
  aspect-ratio:9/19;
  object-fit:cover;
}
.shot-label{
  margin-top:12px;
  font-size:12px;letter-spacing:.04em;
  color:var(--text-3);
  display:flex;align-items:center;gap:8px;
  font-variant-numeric:tabular-nums;
}
.shot-label::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--brand);opacity:.7;}
.shot-progress{
  margin-top:26px;height:3px;border-radius:999px;
  background:rgba(255,255,255,.08);overflow:hidden;
}
.shot-progress i{display:block;height:100%;width:25%;border-radius:999px;background:var(--brand);transition:width .3s var(--ease),transform .3s var(--ease);}

/* ============ 规格卡 ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);}
.spec-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px;
  box-shadow:var(--shadow);
}
.spec-card h3{font-size:19px;font-weight:600;display:flex;align-items:center;gap:10px;}
.spec-card .plat-icon{
  position:absolute;top:26px;right:26px;
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);color:var(--brand);
  border:1px solid var(--line);
}
.spec-list{margin-top:22px;}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:14px 0;
  border-bottom:1px dashed rgba(255,255,255,.10);
  font-size:14px;
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{color:var(--text-3);font-size:13px;letter-spacing:.04em;}
.spec-row dd{color:var(--text);font-variant-numeric:tabular-nums;font-weight:600;text-align:right;}
.spec-note{margin-top:22px;font-size:13px;color:var(--text-3);}

/* ============ 评价墙 ============ */
.review-head{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-bottom:34px;
}
.score-block{display:flex;align-items:center;gap:18px;}
.score-num{font-size:46px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;}
.score-stars{display:flex;gap:3px;color:var(--brand);margin-bottom:6px;}
.score-meta{font-size:13px;color:var(--text-3);z-index: 1;position: relative;}
.review-wall{columns:3;column-gap:var(--gap);}
.review-card{
  break-inside:avoid;
  margin-bottom:var(--gap);
  padding:24px;
  border-radius:var(--r-lg);
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  transition:border-color .22s var(--ease);
}
.review-card:hover{border-color:var(--brand-line);}
.review-stars{display:flex;gap:2px;color:var(--brand);margin-bottom:12px;}
.review-card p{font-size:14.5px;line-height:1.8;color:var(--text-2);}
.review-user{display:flex;align-items:center;gap:12px;margin-top:18px;}
.avatar{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;color:#04120C;
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  flex:0 0 auto;
}
.review-user .u-name{font-size:14px;font-weight:600;line-height:1.3;}
.review-user .u-meta{font-size:12px;color:var(--text-3);letter-spacing:.02em;margin-top:2px;}

/* ============ 下载 CTA ============ */
.download-panel{
  position:relative;
  display:grid;grid-template-columns:1.35fr .65fr;
  gap:40px;
  padding:52px;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:
    radial-gradient(560px 320px at 12% 8%,rgba(0,229,160,.12),transparent 68%),
    var(--bg-2);
  overflow:hidden;
}
.download-panel h2{
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;font-weight:700;letter-spacing:-.01em;
}
.download-panel .dl-desc{margin-top:16px;color:var(--text-2);font-size:15px;max-width:520px;}
.dl-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;
}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.qr-wrap{
  display:flex;flex-direction:column;align-items:center;gap:14px;justify-content:center;
}
.qr-plate{
  width:180px;height:180px;border-radius:var(--r-md);
  background:#F4F7F5;
  display:flex;align-items:center;justify-content:center;
  padding:14px;
}
.qr-inner{
  width:100%;height:100%;
  border-radius:10px;
  background:
    repeating-linear-gradient(90deg,#0A1120 0 8px,transparent 8px 16px),
    repeating-linear-gradient(0deg,#0A1120 0 8px,transparent 8px 16px),
    #F4F7F5;
  background-blend-mode:multiply;
  opacity:.92;
}
.qr-wrap .qr-note{font-size:12px;color:var(--text-3);text-align:center;letter-spacing:.04em;}

/* ============ 资讯列表 ============ */
.info-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.info-card{
  display:flex;flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.info-card:hover{border-color:var(--brand-line);transform:translateY(-3px);}
.info-cover{position:relative;overflow:hidden;background:linear-gradient(160deg,#0C1322,#111A2B);}
.info-cover img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s var(--ease);}
.info-card:hover .info-cover img{transform:scale(1.03);}
.info-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.info-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-body p{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.info-foot .go{color:var(--brand);font-weight:600;letter-spacing:0;}
.empty-state{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  border-radius:var(--r-lg);
  border:1px dashed rgba(255,255,255,.14);
  background:rgba(255,255,255,.03);
  color:var(--text-3);
  font-size:14px;
  text-align:center;
  padding:32px;
}
.empty-state svg{color:var(--text-3);}

/* ============ FAQ ============ */
.faq-list{max-width:820px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{margin:0;}
.faq-q button{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;
  font-size:16.5px;font-weight:600;line-height:1.5;
  text-align:left;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-q button:hover{color:var(--brand);}
.faq-icon{
  position:relative;flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
  transition:transform .26s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;
  background:var(--text-2);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;transition:opacity .2s var(--ease);}
.faq-q button[aria-expanded="true"] .faq-icon{transform:rotate(180deg);border-color:var(--brand-line);background:var(--brand-soft);}
.faq-q button[aria-expanded="true"] .faq-icon::before{background:var(--brand);}
.faq-q button[aria-expanded="true"] .faq-icon::after{opacity:0;background:var(--brand);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 40px 24px 0;
  font-size:15px;line-height:1.8;color:var(--text-2);
  max-width:760px;
}

/* ============ 页脚 ============ */
.cat-pills{
  display:flex;flex-wrap:wrap;gap:10px;
  padding-bottom:56px;
}
.cat-pills a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:999px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.cat-pills a:hover{color:var(--brand);border-color:var(--brand-line);background:var(--brand-soft);}
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo-mark{font-size:17px;}
.footer-brand p{margin-top:16px;font-size:13.5px;color:var(--text-3);line-height:1.8;max-width:260px;}
.footer-contact{margin-top:16px;font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--text-3);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--brand);}
.footer-qr{
  width:140px;height:140px;border-radius:var(--r-md);
  background:#F4F7F5;padding:12px;
}
.footer-qr .qr-inner{width:100%;height:100%;}
.footer-qr-note{font-size:12px;color:var(--text-3);margin-top:12px;letter-spacing:.04em;}
.footer-bottom{
  margin-top:56px;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:12px;color:var(--text-3);letter-spacing:.04em;
}
.footer-bottom a{transition:color .2s var(--ease);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .download-panel{padding:44px;}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .review-wall{columns:2;}
}
@media (max-width:1023px){
  .section{padding:80px 0;}
  .hero{padding:130px 0 72px;min-height:auto;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-panel{max-width:460px;margin:0 auto;width:100%;}
  .shot{flex:0 0 calc((100% - 40px)/3);}
  .v-card.wide,.v-card.narrow,.v-card.half{grid-column:span 12;}
  .spec-grid{grid-template-columns:1fr;}
  .download-panel{grid-template-columns:1fr;gap:34px;}
  .qr-wrap{align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;inset:0;
    flex-direction:column;align-items:stretch;
    gap:0;
    padding:96px 24px 40px;
    background:rgba(7,11,20,.96);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    display:none;
    z-index:90;
  }
  body.nav-open .nav-links{display:flex;}
  .nav-links a{
    height:56px;padding:0;border-radius:0;
    font-size:16px;color:rgba(255,255,255,.78);
    border-bottom:1px solid var(--line);
    justify-content:flex-start;
  }
  .nav-links a.active{background:transparent;color:var(--brand);}
  .nav-links a:hover::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .review-wall{columns:1;}
  .hero-trust{gap:10px 12px;}
}
@media (max-width:768px){
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .info-grid{grid-template-columns:1fr;}
  .shot{flex:0 0 72%;}
  .shots-nav{display:none;}
  .download-panel{padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:640px){
  body{font-size:15px;}
  .hero{padding:112px 0 60px;}
  .hero-copy h1{font-size:28px;}
  .hero-actions{flex-direction:column;gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{font-size:12px;}
  .hero-trust span:not(:last-child)::after{display:none;}
  .rating-chip{left:50%;transform:translateX(-50%);bottom:-18px;}
  .hero-panel{padding-bottom:56px;}
  .v-card,.spec-card,.review-card{padding:22px;}
  .info-card{max-width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .qr-wrap{align-items:center;}
  .download-panel{text-align:left;}
  .dl-actions{flex-direction:column;}
  .dl-actions .btn{width:100%;}
  .faq-a p{padding-right:0;}
  .footer-bottom{justify-content:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#00E5A0;
  --brand-deep:#00B37E;
  --brand-soft:rgba(0,229,160,.12);
  --warn:#FF7A2F;
  --text:#E8EEF7;
  --muted:#9BA9BF;
  --dim:#6B7A90;
  --radius-xl:24px;
  --radius-lg:20px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-brand:0 10px 30px -10px rgba(0,229,160,.55),0 0 0 1px rgba(0,229,160,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{padding-left:1.25em}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(0,229,160,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:clamp(20px,4vw,48px);
}
/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:100;
  display:flex;
  justify-content:center;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:min(1180px,calc(100% - 32px));
  height:62px;
  display:flex;
  align-items:center;
  gap:22px;
  padding:0 12px 0 22px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 18px 40px -24px rgba(0,0,0,.75);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled .nav-shell{
  background:rgba(9,14,24,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 24px 48px -26px rgba(0,0,0,.9);
}
.logo{display:flex;flex-direction:column;line-height:1.12;flex:0 0 auto}
.logo-mark{font-size:17px;font-weight:800;letter-spacing:-.01em;color:#fff}
.logo-sub{font-size:10px;letter-spacing:.08em;color:var(--muted);margin-top:2px}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:14px;
  color:rgba(255,255,255,.6);
  padding:8px 12px;
  border-radius:999px;
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{background:var(--brand);color:#04120C;font-weight:700}
.nav-links a.active::after{display:none}
.nav-cta{margin-left:4px}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.14);
  align-items:center;
  justify-content:center;
  margin-left:auto;
  position:relative;
  z-index:2;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(0,229,160,.5)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:#fff;
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  white-space:nowrap;
  cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-primary{
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  color:#04120C;
  box-shadow:var(--shadow-brand);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:#fff;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  white-space:nowrap;
}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-warn{background:rgba(255,122,47,.14);color:var(--warn)}
.badge-neutral{background:rgba(255,255,255,.06);color:var(--muted)}
/* ---------- main / breadcrumb ---------- */
.main{padding:124px 0 96px}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--dim);
  letter-spacing:.02em;
}
.breadcrumb a{color:var(--dim);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{
  color:var(--muted);
  max-width:min(52vw,420px);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
/* ---------- article ---------- */
.article{max-width:1088px;margin:0 auto}
.article-head{max-width:800px;margin-top:28px}
.article-title{
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.32;
  font-weight:800;
  letter-spacing:-.01em;
  color:#fff;
  margin:16px 0 20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.article-meta .meta-sep{width:1px;height:12px;background:rgba(255,255,255,.16);display:inline-block}
.article-cover{
  max-width:800px;
  margin-top:28px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/9;
  background:linear-gradient(160deg,#0C1322,#111A2B);
  position:relative;
}
.article-cover img{width:100%;height:100%;object-fit:cover}
.article-cover .cover-fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:64px;font-weight:800;color:rgba(255,255,255,.10);letter-spacing:.08em;
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:48px;
  margin-top:40px;
}
.article-body{
  max-width:800px;
  font-size:17px;
  line-height:1.9;
  color:#DCE5F2;
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:24px;
  line-height:1.45;
  font-weight:700;
  color:#fff;
  margin:44px 0 16px;
  padding-left:16px;
  scroll-margin-top:120px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.42em;
  width:4px;
  height:20px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(0,229,160,.6);
}
.article-body h3{
  font-size:19px;
  line-height:1.5;
  font-weight:600;
  color:#fff;
  margin:32px 0 12px;
  scroll-margin-top:120px;
}
.article-body h4{font-size:17px;font-weight:600;color:#fff;margin:24px 0 10px}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  transition:color .2s var(--ease);
}
.article-body a:hover{color:#66ffcc}
.article-body ul,.article-body ol{margin:0 0 1.2em}
.article-body li{margin:.4em 0}
.article-body ul{list-style:none;padding-left:0}
.article-body ul>li{position:relative;padding-left:20px}
.article-body ul>li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--brand);
  opacity:.85;
}
.article-body ol>li::marker{color:var(--brand);font-variant-numeric:tabular-nums}
.article-body blockquote{
  margin:24px 0;
  padding:16px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 14px 14px 0;
  background:rgba(255,255,255,.04);
  color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px auto;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--dim);text-align:center;margin-top:10px}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
}
.article-body thead th{
  background:var(--bg-2);
  color:#fff;
  font-weight:600;
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  font-size:14px;
  letter-spacing:.02em;
}
.article-body tbody td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  color:#C9D5E6;
  vertical-align:top;
}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body tbody tr:hover td{background:rgba(255,255,255,.025)}
.article-body pre{
  margin:24px 0;
  padding:18px 20px;
  border-radius:14px;
  background:#0A1120;
  border:1px solid var(--line);
  overflow-x:auto;
  font-size:14px;
  line-height:1.7;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
  background:rgba(255,255,255,.06);
  padding:2px 6px;
  border-radius:6px;
  color:#9BF3D4;
}
.article-body pre code{background:none;padding:0;color:#C9D5E6}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}
/* ---------- aside ---------- */
.article-aside{display:none}
.toc-card{
  position:sticky;
  top:100px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 18px;
  box-shadow:var(--shadow);
}
.toc-title{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--dim);
  font-weight:600;
  margin-bottom:12px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:46vh;overflow:auto}
.toc-list a{
  display:block;
  font-size:13px;
  line-height:1.6;
  padding:7px 0 7px 14px;
  border-left:2px solid transparent;
  color:var(--muted);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.toc-list a:hover{color:#fff;background:rgba(255,255,255,.03)}
.toc-list a.lvl-3{padding-left:26px;font-size:12.5px;color:var(--dim)}
.toc-list a.is-active{color:var(--brand);border-left-color:var(--brand);font-weight:600}
.aside-dl{
  margin-top:18px;
  padding:20px 18px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  position:sticky;
  top:calc(100px + 320px);
}
.aside-dl p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.aside-dl .dl-ver{font-size:13px;color:#fff;font-variant-numeric:tabular-nums;margin-bottom:12px}
/* ---------- article foot ---------- */
.article-foot{max-width:800px;margin-top:48px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  font-size:12.5px;
  color:var(--muted);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(0,229,160,.4);background:rgba(0,229,160,.08)}
.source-card{
  margin-top:24px;
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--radius);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.source-avatar{
  width:46px;height:46px;flex:0 0 46px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,179,126,.9),rgba(0,229,160,.55));
  color:#04120C;font-weight:800;font-size:16px;
}
.source-info h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:2px}
.source-info p{font-size:13px;color:var(--dim);line-height:1.7;margin:0}
.article-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.article-cta{
  margin-top:48px;
  padding:32px;
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(0,229,160,.10),transparent 62%),
    var(--panel);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.article-cta h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;color:#fff;line-height:1.4;letter-spacing:-.01em}
.article-cta p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.7}
.pill-nav{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
  margin-top:64px;
}
.pill-nav a{
  height:36px;
  display:inline-flex;
  align-items:center;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--muted);
  background:rgba(255,255,255,.02);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.pill-nav a:hover{color:var(--brand);border-color:rgba(0,229,160,.45);background:rgba(0,229,160,.07);transform:translateY(-2px)}
/* ---------- empty state ---------- */
.article-empty{
  margin-top:32px;
  padding:84px 28px;
  text-align:center;
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
}
.article-empty .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;
  border-radius:20px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,229,160,.10);
  border:1px solid rgba(0,229,160,.28);
  color:var(--brand);
}
.article-empty h1{font-size:24px;font-weight:700;color:#fff;letter-spacing:-.01em}
.article-empty p{font-size:15px;color:var(--muted);margin:12px 0 26px}
/* ---------- footer ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--dim);line-height:1.85;max-width:260px}
.footer-contact{margin-top:16px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.footer-col h4{
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:16px;
}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--dim);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-qr{
  width:140px;height:140px;
  border-radius:16px;
  background:#F4F7F5;
  display:flex;align-items:center;justify-content:center;
  padding:10px;
}
.qr-inner{
  width:100%;height:100%;
  border-radius:8px;
  background:
    repeating-linear-gradient(90deg,#0C1322 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#0C1322 0 6px,transparent 6px 12px),
    #F4F7F5;
  opacity:.85;
}
.footer-qr-note{margin-top:12px;font-size:12px;color:var(--dim);font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:12px;
  color:var(--dim);
}
.footer-bottom a:hover{color:var(--brand)}
/* ---------- responsive ---------- */
@media (min-width:1280px){
  .article-layout{grid-template-columns:minmax(0,800px) 240px;justify-content:center;align-items:start}
  .article-aside{display:block}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .nav-shell{
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    background:rgba(10,16,28,.92);
    padding:0 12px 0 18px;
  }
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;
    inset:0;
    z-index:1;
    flex-direction:column;
    align-items:stretch;
    justify-content:center;
    gap:4px;
    margin-left:0;
    padding:96px 24px 40px;
    background:rgba(7,11,20,.94);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    backdrop-filter:blur(18px) saturate(140%);
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  body.nav-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{
    font-size:16px;
    line-height:56px;
    min-height:44px;
    text-align:center;
    border-radius:14px;
    color:rgba(255,255,255,.72);
  }
  .nav-links a::after{display:none}
  .nav-links a.active{color:#04120C}
  .main{padding-top:112px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:640px){
  .main{padding:104px 0 64px}
  .site-footer{padding:56px 0 28px;margin-top:64px}
  .article-title{font-size:26px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-cta{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .article-actions .btn{width:100%}
  .source-card{padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .footer-qr{margin:0 auto}
  .footer-qr-note{text-align:center}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .pill-nav{margin-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --land:#0A1020;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --brand:#00E5A0;
  --brand-solid:#00B37E;
  --brand-soft:rgba(0,229,160,.12);
  --accent:#FF7A2F;
  --accent-soft:rgba(255,122,47,.14);
  --text:#E8EEF7;
  --text-2:#9BA9BF;
  --text-3:#6B7A90;
  --ok:#2BD27B;
  --warn:#FFB020;
  --err:#FF5A5F;
  --r-xl:24px;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-btn:0 10px 30px -10px rgba(0,229,160,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gutter:clamp(20px,4vw,48px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md)}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 16px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:min(1180px,100%);
  height:62px;
  display:flex;align-items:center;gap:18px;
  padding:0 12px 0 22px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 18px 40px -24px rgba(0,0,0,.75);
  transition:background .26s var(--ease),box-shadow .26s var(--ease);
}
.nav-shell.scrolled{
  background:rgba(7,11,20,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 22px 50px -22px rgba(0,0,0,.9);
}
.logo{display:flex;flex-direction:column;line-height:1.12;flex:none}
.logo-mark{font-size:17px;font-weight:800;color:#fff;letter-spacing:-.01em}
.logo-sub{font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:9px 13px;border-radius:999px;
  font-size:14px;color:rgba(255,255,255,.6);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{
  background:var(--brand);color:#04120C;font-weight:700;
  padding:9px 16px;
}
.nav-links a.active::after{display:none}
.nav-cta{flex:none}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  cursor:pointer;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:18px;height:1.6px;border-radius:2px;
  background:#fff;transform:translate(-50%,-50%);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#00B37E 0%,#00E5A0 100%);
  color:#04120C;
  box-shadow:var(--shadow-btn),0 0 0 1px rgba(0,229,160,.45);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px -8px rgba(0,229,160,.5)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:15px;
  border:0;background:none;padding:0;cursor:pointer;
}
.btn-link .arrow{transition:transform .2s var(--ease)}
.btn-link:hover .arrow{transform:translateX(3px)}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:clamp(22px,2.6vw,34px);font-weight:700}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;letter-spacing:.04em;font-weight:600;
  margin-bottom:18px;
}
.eyebrow.orange{background:var(--accent-soft);color:var(--accent)}
.h-line{display:inline-block;width:4px;height:20px;background:var(--brand);border-radius:2px;margin-right:12px;vertical-align:-3px}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(7,11,20,.74) 0%,rgba(7,11,20,.90) 62%,rgba(7,11,20,.98) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:460px;height:460px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,229,160,.16) 0%,rgba(0,229,160,0) 70%);
  pointer-events:none;
}
.page-hero .inner{position:relative;z-index:2;max-width:800px}
.page-hero h1{
  font-size:clamp(28px,4.4vw,48px);font-weight:800;line-height:1.15;
  letter-spacing:-.01em;
}
.page-hero .lead{margin-top:18px;color:var(--text-2);font-size:17px;max-width:640px}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.crumb a{color:var(--text-3);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--text-2)}

/* ---------- 登录布局 ---------- */
.login-layout{
  display:grid;
  grid-template-columns:282px minmax(0,1fr);
  gap:40px;align-items:start;
}
.toc-card{
  position:sticky;top:96px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px 20px;
  box-shadow:var(--shadow-card);
}
.toc-card h2{font-size:14px;letter-spacing:.04em;color:var(--text-3);font-weight:600;margin-bottom:14px}
.toc-card ol{counter-reset:toc}
.toc-card li+li{margin-top:4px}
.toc-card a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.toc-card a:hover{background:var(--brand-soft);color:var(--brand)}
.toc-card a .dot{width:6px;height:6px;border-radius:50%;background:var(--text-3);flex:none;transition:background .2s var(--ease)}
.toc-card a:hover .dot{background:var(--brand)}
.toc-meta{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.toc-meta strong{color:var(--text);font-weight:600}

.steps{display:flex;flex-direction:column;gap:20px}
.step{
  display:grid;grid-template-columns:72px minmax(0,1fr);gap:20px;
  padding:28px 28px 26px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.step:hover{border-color:rgba(0,229,160,.35);transform:translateY(-2px)}
.step-num{
  font-size:40px;font-weight:800;line-height:1;color:var(--brand);opacity:.8;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.step h3{font-size:19px;font-weight:600;margin-bottom:10px}
.step p{color:var(--text-2);font-size:15.5px;line-height:1.85}
.step-tip{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  padding:6px 12px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:12.5px;color:var(--text-2);
}
.step-tip.warn{background:var(--accent-soft);border-color:rgba(255,122,47,.28);color:#FFB98A}

/* ---------- 检查清单 ---------- */
.check-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;
}
.check-card{
  display:flex;gap:16px;
  padding:24px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-card:hover{border-color:rgba(0,229,160,.35);background:#0E1729}
.check-icon{
  flex:none;width:42px;height:42px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
}
.check-icon svg{width:22px;height:22px}
.check-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.check-card p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.check-card .val{
  display:block;margin-top:8px;font-size:13px;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-list{border-top:1px solid var(--line);margin-top:8px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{margin:0;font-size:17px;font-weight:600}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;color:var(--text);
  font-size:17px;font-weight:600;text-align:left;cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-q button:hover{color:var(--brand)}
.faq-ico{
  flex:none;position:relative;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line-2);
  transition:transform .26s var(--ease),border-color .2s var(--ease);
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);
  transform:translate(-50%,-50%);border-radius:2px;transition:background .2s var(--ease);
}
.faq-ico::before{width:10px;height:1.6px}
.faq-ico::after{width:1.6px;height:10px}
.faq-item.open .faq-ico{transform:rotate(180deg);border-color:rgba(0,229,160,.5)}
.faq-item.open .faq-ico::before,.faq-item.open .faq-ico::after{background:var(--brand)}
.faq-item.open .faq-ico::after{opacity:0}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .28s var(--ease);
}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{
  padding:0 0 22px;color:var(--text-2);font-size:15px;line-height:1.85;max-width:780px;
}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  padding:48px;
  border-radius:var(--r-xl);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.cta-panel::before{
  content:"";position:absolute;left:-120px;top:-140px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(0,229,160,.12) 0%,rgba(0,229,160,0) 70%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;position:relative;z-index:2}
.cta-panel p{margin-top:14px;color:var(--text-2);font-size:15px;position:relative;z-index:2}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:20px;font-size:13.5px;color:var(--text-3);
  font-variant-numeric:tabular-nums;position:relative;z-index:2;
}
.meta-row span:not(:last-child)::after{content:"";display:inline-block;width:1px;height:11px;background:var(--line-2);margin-left:14px;vertical-align:-1px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;position:relative;z-index:2}
.qr-board{
  position:relative;z-index:2;justify-self:end;
  background:#F4F7F5;border-radius:var(--r-md);padding:14px;
  box-shadow:0 20px 44px -26px rgba(0,0,0,.9);
}
.qr-board .qr-inner{
  width:140px;height:140px;border-radius:10px;
  background:
    repeating-linear-gradient(90deg,#0C1322 0 6px,#F4F7F5 6px 12px),
    repeating-linear-gradient(0deg,#0C1322 0 6px,#F4F7F5 6px 12px);
  background-blend-mode:multiply;
  opacity:.86;
}
.qr-note{margin-top:10px;text-align:center;font-size:12px;color:#4A5568;letter-spacing:.02em}

/* ---------- 分类互链 ---------- */
.cat-nav{padding:0 0 88px}
.cat-pills{display:flex;flex-wrap:wrap;gap:12px}
.cat-pills a{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  font-size:14px;color:var(--text-2);
  transition:all .2s var(--ease);
}
.cat-pills a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.cat-pills a.current{
  background:var(--brand);border-color:var(--brand);color:#04120C;font-weight:700;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand p{
  margin-top:18px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:300px;
}
.footer-contact{
  margin-top:16px;font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-qr{
  display:inline-block;background:#F4F7F5;border-radius:var(--r-md);padding:12px;
}
.footer-qr .qr-inner{
  width:104px;height:104px;border-radius:8px;
  background:
    repeating-linear-gradient(90deg,#0C1322 0 5px,#F4F7F5 5px 10px),
    repeating-linear-gradient(0deg,#0C1322 0 5px,#F4F7F5 5px 10px);
  background-blend-mode:multiply;
  opacity:.86;
}
.footer-qr-note{margin-top:12px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .login-layout{grid-template-columns:240px minmax(0,1fr);gap:28px}
}
@media (max-width:1023px){
  .login-layout{grid-template-columns:minmax(0,1fr);gap:24px}
  .toc-card{position:static}
  .toc-card ol{display:flex;flex-wrap:wrap;gap:8px}
  .toc-card li+li{margin-top:0}
  .cta-panel{grid-template-columns:1fr;padding:36px}
  .qr-board{justify-self:start}
  .footer-grid{grid-template-columns:1.4fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;inset:0;z-index:95;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;margin:0;padding:96px 24px 32px;
    background:rgba(7,11,20,.96);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    transform:translateY(-100%);
    opacity:0;visibility:hidden;
    transition:transform .3s var(--ease),opacity .3s var(--ease),visibility .3s;
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{
    font-size:17px;line-height:56px;min-height:56px;padding:0 4px;
    border-bottom:1px solid var(--line);border-radius:0;
  }
  .nav-links a::after{display:none}
  .nav-links a.active{background:none;color:var(--brand);padding:0 4px;font-weight:700}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .nav-shell{gap:12px;padding:0 10px 0 18px}
  .section{padding:64px 0}
  .page-hero{padding:128px 0 56px}
  .cat-nav{padding-bottom:64px}
}
@media (max-width:640px){
  .step{grid-template-columns:minmax(0,1fr);gap:12px;padding:24px 20px}
  .step-num{font-size:34px}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .cta-panel{padding:28px 22px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .btn{width:100%;max-width:100%}
  .cat-pills a{height:44px;padding:0 16px;font-size:13.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .page-hero h1{font-size:28px}
  .faq-q button{font-size:16px;padding:18px 0}
  .section-head{margin-bottom:28px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --brand:#00E5A0;
  --brand-solid:#00B37E;
  --brand-soft:rgba(0,229,160,.18);
  --orange:#FF7A2F;
  --orange-soft:rgba(255,122,47,.14);
  --text:#E8EEF7;
  --text-2:#9BA9BF;
  --text-3:#6B7A90;
  --success:#2BD27B;
  --warn:#FFB020;
  --error:#FF5A5F;
  --r-xl:24px;
  --r-lg:18px;
  --r-md:16px;
  --r-sm:14px;
  --r-xs:12px;
  --pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 10px 30px -10px rgba(0,229,160,.55),0 0 0 1px rgba(0,229,160,.45);
  --t:250ms cubic-bezier(.2,.7,.3,1);
  --pad-x:clamp(20px,4vw,48px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:clamp(28px,4.4vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h3{font-size:19px;line-height:1.4;font-weight:600}
::selection{background:rgba(0,229,160,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--pad-x)}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section-head{max-width:740px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:640px}
.section-head.center p{margin-left:auto;margin-right:auto}
h2 .accent{color:var(--brand)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:26px;padding:0 13px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.04em;
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(0,229,160,.26);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:25px;padding:0 12px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.04em;border:1px solid transparent;
}
.badge-brand{background:rgba(0,229,160,.12);color:var(--brand);border-color:rgba(0,229,160,.24)}
.badge-orange{background:var(--orange-soft);color:var(--orange);border-color:rgba(255,122,47,.26)}
.badge-neutral{background:rgba(255,255,255,.06);color:var(--text-2);border-color:var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:var(--pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t),filter var(--t);
  white-space:nowrap;text-align:center;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  color:#04120C;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px -12px rgba(0,229,160,.7)}
.btn-ghost{
  border:1px solid rgba(255,255,255,.18);
  color:var(--text);background:rgba(255,255,255,.02);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;height:auto;padding:0;background:none;
  transition:color var(--t);
}
.btn-text .arrow{transition:transform var(--t)}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;justify-content:center;pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  width:min(1180px,calc(100% - 32px));
  height:62px;
  display:flex;align-items:center;gap:20px;
  padding:0 12px 0 22px;
  border-radius:var(--pill);
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 18px 40px -24px rgba(0,0,0,.85);
  transition:background var(--t),box-shadow var(--t);
}
.nav-shell.scrolled{
  background:rgba(9,14,25,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 22px 46px -22px rgba(0,0,0,.9);
}
.logo{display:flex;flex-direction:column;line-height:1.15;gap:2px;flex:none}
.logo-mark{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.logo-sub{font-size:10px;letter-spacing:.08em;color:var(--brand);font-weight:600;opacity:.9}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;font-size:14px;color:rgba(255,255,255,.6);
  padding:8px 12px;border-radius:var(--pill);
  transition:color var(--t),background var(--t);
  white-space:nowrap;
}
.nav-links a:hover{color:#fff}
.nav-links a:not(.active):hover::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-links a.active{background:var(--brand);color:#04120C;font-weight:600}
.nav-cta{flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--pill);
  align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.14);margin-left:auto;flex:none;
  transition:border-color var(--t);
}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:var(--t)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:var(--t);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- 分类页窄 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:152px 0 76px;
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.page-hero .hero-bg{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;z-index:0;opacity:.55;
}
.page-hero .hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.9) 62%,var(--bg) 100%),
    radial-gradient(700px 340px at 82% 12%,rgba(0,229,160,.14),transparent 70%);
}
.page-hero .hero-arc{
  position:absolute;right:-160px;bottom:-260px;width:620px;height:620px;
  border:1px solid rgba(255,255,255,.5);border-radius:50%;
  opacity:.07;z-index:1;pointer-events:none;
}
.page-hero .hero-arc.two{right:-60px;bottom:-360px;width:760px;height:760px;opacity:.05}
.hero-inner{position:relative;z-index:2;max-width:860px}
.hero-inner h1{margin:18px 0 16px}
.hero-inner .hero-desc{font-size:17px;color:var(--text-2);max-width:640px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0 18px;align-items:center;
  margin-top:34px;font-size:13px;color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.hero-facts span{display:inline-flex;align-items:center;gap:8px}
.hero-facts span+span{padding-left:18px;border-left:1px solid var(--line)}
.hero-facts b{color:var(--text);font-weight:600}

/* ---------- 交替图文 ---------- */
.split{
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.split + .split{margin-top:88px}
.split.reverse .split-media{order:-1}
.split-body .step-num{
  display:block;font-size:40px;line-height:1;font-weight:800;
  color:var(--brand);opacity:.8;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.split-body h2{margin:16px 0 14px;font-size:clamp(21px,2.2vw,28px)}
.split-body > p{color:var(--text-2);font-size:16px;line-height:1.85;max-width:520px}
.point-list{margin-top:24px;display:grid;gap:12px}
.point-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.point-list li::before{
  content:"";flex:none;width:7px;height:7px;margin-top:9px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 0 3px rgba(0,229,160,.14);
}
.point-list li b{color:var(--text);font-weight:600}
.split-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,var(--bg-2),var(--panel));
  box-shadow:var(--shadow-card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:30px 18px 14px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(7,11,20,.9));
}

/* ---------- 规格卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.spec-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:30px 28px 24px;
  box-shadow:var(--shadow-card);
  transition:border-color var(--t),transform var(--t);
}
.spec-card:hover{border-color:rgba(0,229,160,.35);transform:translateY(-2px)}
.spec-card .plat-icon{
  position:absolute;top:26px;right:26px;width:34px;height:34px;
  color:var(--brand);opacity:.9;
}
.spec-card h3{font-size:19px;margin-bottom:6px}
.spec-card .spec-sub{font-size:13px;color:var(--text-3);margin-bottom:20px}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.10);
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:13px;color:var(--text-3);flex:none}
.spec-row dd{
  margin:0;font-size:14px;color:var(--text);font-weight:600;
  text-align:right;font-variant-numeric:tabular-nums;
}
.spec-note{
  display:flex;align-items:center;gap:8px;
  margin-top:22px;font-size:13px;color:var(--text-3);
}
.spec-note svg{flex:none;color:var(--warn)}

/* ---------- 下载面板 ---------- */
.download-panel{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.45fr 1fr;gap:44px;align-items:center;
  padding:52px;
  border-radius:var(--r-xl);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.download-panel::before{
  content:"";position:absolute;right:-140px;top:-240px;width:620px;height:620px;
  background:radial-gradient(circle,rgba(0,229,160,.12),transparent 66%);
  pointer-events:none;
}
.download-panel > *{position:relative;z-index:1}
.download-panel h2{margin-bottom:14px;font-size:clamp(21px,2.4vw,30px)}
.download-panel .dl-desc{color:var(--text-2);font-size:15px;max-width:520px}
.dl-meta{
  display:flex;flex-wrap:wrap;gap:0 18px;margin:22px 0 0;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.dl-meta span+span{padding-left:18px;border-left:1px solid var(--line)}
.dl-meta b{color:var(--text);font-weight:600}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.qr-block{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}
.qr-plate{
  width:172px;height:172px;border-radius:var(--r-md);
  background:#F4F7F5;display:grid;place-items:center;
  box-shadow:0 18px 40px -24px rgba(0,0,0,.9);
}
.qr-plate svg{width:140px;height:140px;border-radius:8px}
.qr-note{font-size:12px;color:var(--text-3);max-width:220px;line-height:1.7}

/* ---------- 工作条带 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
}
.stat-strip > div{background:var(--bg-2);padding:26px 24px;text-align:center}
.stat-num{
  display:block;font-size:28px;font-weight:800;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;
}
.stat-label{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--text);
  transition:color var(--t);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-2);color:var(--text-2);
  transition:transform var(--t),border-color var(--t),color var(--t);
}
.faq-item.open .faq-icon{transform:rotate(180deg);border-color:rgba(0,229,160,.5);color:var(--brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--t)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{
  max-width:820px;font-size:15px;color:var(--text-2);line-height:1.8;
  margin:0 0 24px;padding-right:40px;
}

/* ---------- 分类胶囊互链 ---------- */
.cat-nav-wrap{border-top:1px solid var(--line);padding:56px 0 72px}
.cat-nav-title{
  text-align:center;font-size:13px;letter-spacing:.08em;
  color:var(--text-3);margin-bottom:22px;
}
.cat-nav{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.cat-nav a{
  padding:11px 22px;border-radius:var(--pill);
  border:1px solid var(--line);background:var(--panel);
  font-size:14px;color:var(--text-2);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.cat-nav a:hover{border-color:rgba(0,229,160,.5);color:var(--brand);transform:translateY(-2px)}
.cat-nav a.active{background:var(--brand-soft);border-color:rgba(0,229,160,.45);color:var(--brand);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:290px;line-height:1.8}
.footer-contact{margin-top:14px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);transition:color var(--t)}
.footer-col a:hover{color:var(--brand)}
.footer-qr{
  width:160px;height:160px;border-radius:var(--r-md);
  background:#F4F7F5;display:grid;place-items:center;
}
.qr-inner{width:136px;height:136px;border-radius:8px;background:#0A1020}
.footer-qr-note{margin-top:12px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:12px;color:var(--text-3);
}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms cubic-bezier(.2,.7,.3,1),transform 520ms cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .split{gap:44px}
}
@media (max-width:1023px){
  .section{padding:80px 0}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:0}
  .split + .split{margin-top:64px}
  .spec-grid{grid-template-columns:1fr}
  .download-panel{grid-template-columns:1fr;gap:36px;padding:40px}
  .qr-block{align-items:flex-start;text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:900px){
  .nav-shell{background:rgba(10,16,28,.92);backdrop-filter:none;-webkit-backdrop-filter:none;padding:0 10px 0 18px;gap:12px}
  .nav-links{
    position:fixed;inset:0;z-index:120;margin:0;
    flex-direction:column;justify-content:center;gap:6px;
    padding:80px 28px;
    background:rgba(7,11,20,.94);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    opacity:0;pointer-events:none;transition:opacity var(--t);
  }
  .nav-links.open{opacity:1;pointer-events:auto}
  .nav-links a{
    width:100%;max-width:360px;min-height:56px;
    display:flex;align-items:center;justify-content:center;
    font-size:16px;color:rgba(255,255,255,.78);
  }
  .nav-links a:not(.active):hover::after{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  body.nav-open{overflow:hidden}
  .page-hero{padding:132px 0 64px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .section-head{margin-bottom:36px}
  .hero-facts{gap:0 14px;font-size:12px}
  .hero-facts span+span{padding-left:14px}
  .download-panel{padding:32px 24px}
  .spec-card{padding:26px 22px 20px}
  .faq-q{font-size:16px;padding:20px 0}
  .faq-a p{padding-right:0}
  .stat-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  h1{font-size:28px}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .btn{width:100%}
  .dl-actions{flex-direction:column;align-items:stretch}
  .dl-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .qr-block{align-items:center;text-align:center}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .point-list li{font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#00E5A0;
  --brand-deep:#00B37E;
  --brand-weak:rgba(0,229,160,.12);
  --brand-glow:rgba(0,229,160,.45);
  --orange:#FF7A2F;
  --text:#E8EEF7;
  --muted:#9BA9BF;
  --dim:#6B7A90;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 10px 30px -10px rgba(0,229,160,.55),0 0 0 1px rgba(0,229,160,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.lock{overflow:hidden}
img{display:block;max-width:100%;background:linear-gradient(135deg,#0C1322,#111A2B)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:96px 0;position:relative}
.section-tight{padding:72px 0}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:120;
  display:flex;justify-content:center;padding:0 16px;
}
.nav-shell{
  width:min(1180px,100%);height:62px;
  display:flex;align-items:center;gap:20px;
  padding:0 12px 0 22px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.nav-shell.scrolled{
  background:rgba(9,14,24,.82);
  box-shadow:0 18px 40px -24px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.10);
}
.logo{
  display:flex;flex-direction:column;line-height:1.1;
  position:relative;z-index:6;flex:none;
}
.logo-mark{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.logo-sub{font-size:10px;letter-spacing:.08em;color:var(--brand);margin-top:3px;font-weight:500}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:999px;
  font-size:14px;color:rgba(232,238,247,.62);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{opacity:1;transform:scaleX(1)}
.nav-links a.active{
  background:var(--brand);color:#04120C;font-weight:600;
}
.nav-links a.active::after{display:none}
.nav-cta{flex:none;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);position:relative;
  z-index:7;flex:none;
}
.nav-toggle span,.nav-toggle::before,.nav-toggle::after{
  content:"";position:absolute;left:50%;width:18px;height:1.5px;
  background:var(--text);border-radius:2px;transform:translateX(-50%);
  transition:transform .24s var(--ease),opacity .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span{top:calc(50% - .75px)}
.nav-toggle::before{top:calc(50% - 6px)}
.nav-toggle::after{top:calc(50% + 6px)}
.nav-toggle.is-open span{opacity:0}
.nav-toggle.is-open::before{top:calc(50% - .75px);transform:translateX(-50%) rotate(45deg)}
.nav-toggle.is-open::after{top:calc(50% - .75px);transform:translateX(-50%) rotate(-45deg)}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),
             background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  color:#04120C;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{filter:brightness(1.06);box-shadow:0 14px 34px -10px rgba(0,229,160,.7)}
.btn-primary:active{box-shadow:0 6px 16px -10px rgba(0,229,160,.6)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:gap .2s var(--ease),color .2s var(--ease);
}
.btn-link:hover{gap:10px;color:#5BFFCB}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
}
.badge-brand{background:var(--brand-weak);color:var(--brand)}
.badge-orange{background:rgba(255,122,47,.14);color:var(--orange)}
.badge-neutral{background:rgba(255,255,255,.07);color:var(--muted)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:160px 0 76px}
.hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.55;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.9) 62%,var(--bg) 100%);
}
.hero-inner{position:relative;max-width:900px}
.hero h1{
  font-size:clamp(28px,4.4vw,52px);
  line-height:1.15;font-weight:800;letter-spacing:-.01em;
  margin:20px 0 18px;
}
.hero-lead{
  font-size:clamp(15px,1.5vw,18px);line-height:1.8;
  color:var(--muted);max-width:620px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.tag{
  display:inline-flex;align-items:center;
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:13px;color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
  min-height:38px;
}
.tag:hover{border-color:rgba(0,229,160,.45);color:var(--brand)}
.tag.is-active{
  background:var(--brand-weak);
  border-color:rgba(0,229,160,.5);
  color:var(--brand);font-weight:600;
}

/* ============ 通用标题 ============ */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:40px;
}
.section-title{
  font-size:clamp(22px,2.6vw,34px);line-height:1.25;
  font-weight:700;letter-spacing:-.01em;margin:0 0 12px;
}
.section-sub{color:var(--muted);font-size:16px;max-width:660px}

/* ============ 功能卡片网格 ============ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.f-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px 24px 22px;
  box-shadow:var(--shadow-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
  display:flex;flex-direction:column;
}
.f-card:hover{border-color:rgba(0,229,160,.35);transform:translateY(-2px)}
.f-card h3{font-size:19px;font-weight:600;line-height:1.4;margin:18px 0 10px}
.f-card p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-bottom:18px}
.f-card .btn-link{margin-top:auto}
.f-icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,229,160,.1);
  border:1px solid rgba(0,229,160,.2);
  color:var(--brand);
}
.f-card-lg{
  grid-column:span 2;
  padding:0;overflow:hidden;
  display:grid;grid-template-columns:1.05fr 1fr;
  align-items:stretch;
}
.f-card-lg figure{margin:0;overflow:hidden;position:relative;min-height:280px}
.f-card-lg img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.f-card-lg:hover img{transform:scale(1.03)}
.f-card-lg .f-body{padding:30px 28px;display:flex;flex-direction:column}
.f-card-lg h3{margin-top:14px;font-size:22px}
.f-card-lg p{font-size:15px}

/* ============ 步骤 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
}
.step{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:26px 22px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.step:hover{border-color:rgba(0,229,160,.3);background:#0E1728}
.step-num{
  font-size:40px;font-weight:800;line-height:1;
  color:var(--brand);opacity:.8;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.step h3{font-size:16px;font-weight:600;margin:16px 0 8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ 场景 ============ */
.scene{
  display:grid;grid-template-columns:1fr 1fr;
  gap:40px;align-items:center;
}
.scene-list{display:flex;flex-direction:column;gap:16px}
.scene-item{
  display:flex;gap:16px;
  padding:20px 22px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.scene-item:hover{border-color:rgba(0,229,160,.32);transform:translateY(-2px)}
.scene-dot{
  flex:none;width:10px;height:10px;border-radius:3px;
  background:var(--brand);margin-top:10px;
  box-shadow:0 0 0 4px rgba(0,229,160,.12);
}
.scene-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px}
.scene-item p{font-size:14.5px;color:var(--muted);line-height:1.8}
.scene-figure{
  border-radius:var(--radius-md);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.scene-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.scene-figure figcaption{
  font-size:13px;color:var(--dim);
  padding:12px 16px;background:var(--panel);
  border-top:1px solid var(--line);
}

/* ============ 数据条带 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:var(--bg-2);
  overflow:hidden;
}
.metric{
  padding:34px 28px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:0}
.metric-num{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;line-height:1.1;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric-label{font-size:13px;color:var(--muted);margin-top:10px;letter-spacing:.04em}

/* ============ FAQ ============ */
.faq{max-width:860px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:22px 4px;text-align:left;
  font-size:16.5px;font-weight:600;line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:18px;height:18px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{
  font-size:15px;line-height:1.85;color:var(--muted);
  padding:0 4px 24px;max-width:790px;
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--line);
  padding:48px;
  display:grid;grid-template-columns:1.45fr 1fr;
  gap:40px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:-60% 40% 20% -25%;
  background:radial-gradient(circle at 30% 40%,rgba(0,229,160,.12),transparent 68%);
  pointer-events:none;
}
.cta-panel > *{position:relative}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;margin-bottom:14px}
.cta-panel .cta-desc{color:var(--muted);font-size:15px;margin-bottom:18px;max-width:520px}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:0;align-items:center;
  font-size:13px;color:var(--dim);
  font-variant-numeric:tabular-nums;
  margin-bottom:26px;
}
.cta-meta span{padding:0 14px;border-right:1px solid var(--line-strong)}
.cta-meta span:first-child{padding-left:0}
.cta-meta span:last-child{border-right:0}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px}
.qr-board{
  background:#F4F7F5;border-radius:16px;padding:16px;
  width:184px;margin-left:auto;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.qr-code{
  width:140px;height:140px;border-radius:8px;
  background-color:#0C1322;
  background-image:radial-gradient(rgba(244,247,245,.55) 1.6px,transparent 1.6px);
  background-size:10px 10px;
}
.qr-board p{font-size:12px;color:#2A3444;letter-spacing:.02em;text-align:center}
.qr-note{font-size:12px;color:var(--dim);text-align:right;margin-top:10px}

/* ============ 分类互链 ============ */
.cat-nav{padding:8px 0 72px}
.cat-links{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.8;margin:18px 0 14px;max-width:300px}
.footer-contact{font-size:13px;color:var(--dim);font-variant-numeric:tabular-nums}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-qr{background:#F4F7F5;border-radius:16px;padding:16px;width:184px}
.qr-inner{
  width:140px;height:140px;border-radius:8px;
  background-color:#0C1322;
  background-image:radial-gradient(rgba(244,247,245,.55) 1.6px,transparent 1.6px);
  background-size:10px 10px;
}
.footer-qr-note{font-size:12px;color:var(--dim);margin-top:10px;font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  border-top:1px solid var(--line);
  margin-top:56px;padding-top:24px;
  font-size:12px;color:var(--dim);
}
.footer-bottom a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding:80px 0}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene{grid-template-columns:1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr;padding:40px}
  .qr-board{margin-left:0}
  .qr-note{text-align:left}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-grid .footer-col:last-child{grid-column:span 3}
}

@media (max-width:900px){
  .nav-shell{
    -webkit-backdrop-filter:none;backdrop-filter:none;
    background:rgba(9,14,24,.92);
    padding-right:8px;
  }
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .nav-links{
    position:fixed;inset:0;z-index:5;
    flex-direction:column;justify-content:center;
    gap:4px;padding:96px 28px 48px;
    background:rgba(7,11,20,.96);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    backdrop-filter:blur(18px) saturate(140%);
    border-radius:0;
    opacity:0;transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
    margin-left:0;
  }
  .nav-links.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a{
    width:100%;text-align:center;justify-content:center;
    line-height:56px;font-size:16px;padding:0;border-radius:14px;
  }
  .nav-links a::after{display:none}
  .nav-links a.active{background:var(--brand-weak);color:var(--brand)}
  .nav-links a:hover{background:rgba(255,255,255,.05)}
  .hero{padding:140px 0 64px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid .footer-col:last-child{grid-column:span 2}
}

@media (max-width:768px){
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .f-card-lg{grid-template-columns:1fr}
  .f-card-lg figure{min-height:200px;aspect-ratio:16/9}
  .f-card-lg img{aspect-ratio:16/9}
  .cta-btns .btn{flex:1 1 100%}
  .metric{padding:26px 22px}
  .cta-meta span{padding:0 10px}
}

@media (max-width:640px){
  body{font-size:15.5px}
  .hero{padding:128px 0 56px}
  .hero h1{font-size:28px}
  .feature-grid{grid-template-columns:1fr}
  .f-card-lg{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:0}
  .cta-panel{padding:30px 22px;border-radius:20px}
  .cta-btns{flex-direction:column;gap:12px}
  .cta-btns .btn{width:100%}
  .qr-board{margin:0 auto}
  .qr-note{text-align:center}
  .footer-grid{grid-template-columns:1fr}
  .footer-grid .footer-col:last-child{grid-column:span 1}
  .footer-qr{margin:0 auto}
  .footer-qr-note{text-align:center}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-q{font-size:15.5px;padding:18px 2px}
  .btn{width:100%}
  .badge{font-size:11.5px}
  .cat-links .tag{flex:1 1 auto;justify-content:center}
}

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

/* roulang page: category4 */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.12);
  --line-3:rgba(255,255,255,.18);
  --green:#00E5A0;
  --green-deep:#00B37E;
  --green-soft:rgba(0,229,160,.18);
  --green-12:rgba(0,229,160,.12);
  --green-35:rgba(0,229,160,.35);
  --orange:#FF7A2F;
  --orange-14:rgba(255,122,47,.14);
  --success:#2BD27B;
  --text:#E8EEF7;
  --muted:#9BA9BF;
  --dim:#6B7A90;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:16px;
  --r-xs:12px;
  --shadow:0 18px 40px -24px rgba(0,0,0,.75);
  --glow:0 10px 30px -10px rgba(0,229,160,.55), 0 0 0 1px rgba(0,229,160,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms cubic-bezier(.2,.7,.3,1);
  --glass:rgba(255,255,255,.06);
  --font:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color var(--t)}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--green);
  outline-offset:3px;
  border-radius:6px;
}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
}
.num{font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;padding:16px 16px 0}
.nav-shell{
  position:relative;
  display:flex;
  align-items:center;
  gap:24px;
  width:min(1180px,100%);
  height:62px;
  margin:0 auto;
  padding:0 14px 0 22px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
  transition:background var(--t),box-shadow var(--t);
}
.nav-shell.scrolled{
  background:rgba(9,14,24,.82);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 20px 40px -26px rgba(0,0,0,.9);
}
.logo{display:flex;flex-direction:column;gap:2px;line-height:1;margin-right:auto}
.logo-mark{font-size:17px;font-weight:800;letter-spacing:.02em;color:#fff}
.logo-sub{font-size:10px;letter-spacing:.08em;color:var(--green);font-weight:600}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;
  padding:8px 14px;
  font-size:14px;
  color:rgba(255,255,255,.6);
  border-radius:999px;
  white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--green);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{background:var(--green);color:#04120C;font-weight:600}
.nav-links a.active::after{display:none}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line-2);
  margin-left:auto;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;
  width:18px;height:2px;
  background:#fff;
  border-radius:2px;
  position:relative;
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-shell.open .nav-toggle span{background:transparent}
.nav-shell.open .nav-toggle span::before{transform:translateY(6px) rotate(45deg);background:var(--green)}
.nav-shell.open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg);background:var(--green)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),opacity var(--t);
  text-align:center;
}
.btn-primary{
  color:#04120C;
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 34px -12px rgba(0,229,160,.7),0 0 0 1px rgba(0,229,160,.55)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px -12px rgba(0,229,160,.6),0 0 0 1px rgba(0,229,160,.4)}
.btn-ghost{
  color:#fff;
  border:1px solid var(--line-3);
  background:transparent;
}
.btn-ghost:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--green);
  font-size:14px;
  font-weight:600;
  padding:6px 0;
}
.btn-text .arw{transition:transform var(--t)}
.btn-text:hover .arw{transform:translateX(3px)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:25px;
  padding:0 11px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.04em;
  font-weight:600;
  white-space:nowrap;
}
.badge-green{background:var(--green-12);color:var(--green)}
.badge-orange{background:var(--orange-14);color:var(--orange)}
.badge-neutral{background:rgba(255,255,255,.07);color:var(--muted);border:1px solid var(--line)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 56px;
  overflow:hidden;
  isolation:isolate;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  z-index:-2;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.82) 0%,rgba(7,11,20,.72) 46%,var(--bg) 100%);
  z-index:-1;
}
.hero-inner{max-width:880px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  border-radius:999px;
  background:var(--green-12);
  border:1px solid rgba(0,229,160,.28);
  color:var(--green);
  font-size:12px;
  letter-spacing:.06em;
  font-weight:600;
  margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(28px,4.4vw,48px);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:18px;
}
.page-hero .lead{
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
  max-width:720px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:30px;
  font-size:13px;
  color:var(--dim);
  font-variant-numeric:tabular-nums;
}
.hero-meta span{padding:0 16px;border-left:1px solid var(--line-2)}
.hero-meta span:first-child{padding-left:0;border-left:0}

/* ---------- filter pills ---------- */
.filter-bar{padding:8px 0 0}
.filter-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding:18px 20px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:var(--bg-2);
}
.filter-label{font-size:13px;color:var(--dim);letter-spacing:.04em;margin-right:4px}
.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line-2);
  color:var(--muted);
  font-size:14px;
  font-weight:600;
  transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);
}
.pill:hover{color:#fff;border-color:var(--green-35);transform:translateY(-1px)}
.pill[aria-selected="true"],.pill.is-active{
  background:var(--green-12);
  border-color:rgba(0,229,160,.5);
  color:var(--green);
}
.pill .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.8}

/* ---------- faq layout ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0 96px}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(22px,2.6vw,34px);
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.section-head h2::before{
  content:"";
  width:4px;height:22px;
  border-radius:2px;
  background:var(--green);
  flex:0 0 auto;
}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px}

.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 330px;
  gap:48px;
  align-items:start;
}
.faq-groups{display:flex;flex-direction:column;gap:48px;scroll-margin-top:110px}
.faq-group{scroll-margin-top:110px}
.group-head{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  padding-bottom:14px;
  border-bottom:1px solid var(--line);
  margin-bottom:6px;
}
.group-head h2{font-size:clamp(20px,2.2vw,26px);display:flex;align-items:center;gap:10px}
.group-head h2::before{
  content:"";
  width:4px;height:20px;border-radius:2px;background:var(--green);
}
.group-head .badge{margin-left:auto}

.acc-item{border-bottom:1px solid var(--line)}
.acc-trigger{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  width:100%;
  padding:20px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--text);
  transition:color var(--t);
}
.acc-trigger:hover{color:var(--green)}
.acc-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:6px;
  border-radius:50%;
  transition:transform var(--t);
}
.acc-icon::before,.acc-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:13px;height:1.6px;
  background:var(--green);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--t),opacity var(--t);
}
.acc-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.acc-item.open .acc-icon{transform:rotate(180deg)}
.acc-item.open .acc-icon::after{opacity:0}
.acc-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height 280ms var(--ease);
}
.acc-body{
  padding:0 0 22px;
  max-width:800px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}
.acc-body p+p{margin-top:10px}
.acc-body strong{color:var(--text);font-weight:600}
.acc-body .steps{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.acc-body .steps li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  color:var(--muted);
}
.acc-body .steps li::before{
  content:"";
  position:absolute;
  left:4px;top:11px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--green);
  opacity:.85;
}

/* ---------- sidebar ---------- */
.faq-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.contact-card{
  border-radius:var(--r-lg);
  padding:26px 24px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10);
}
.contact-card h3{font-size:18px;margin-bottom:8px}
.contact-card p{font-size:14px;color:var(--muted);line-height:1.8}
.contact-card .btn{margin-top:18px}
.contact-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--dim);font-variant-numeric:tabular-nums}
.contact-list li{display:flex;justify-content:space-between;gap:10px;padding-bottom:10px;border-bottom:1px dashed var(--line)}
.contact-list li:last-child{border-bottom:0;padding-bottom:0}
.contact-list b{color:var(--text);font-weight:600}

.side-card{
  border-radius:var(--r-md);
  background:var(--panel);
  border:1px solid var(--line);
  overflow:hidden;
  transition:border-color var(--t),transform var(--t);
}
.side-card:hover{border-color:var(--green-35);transform:translateY(-2px)}
.side-card .thumb{
  position:relative;
  aspect-ratio:4/3;
  background:linear-gradient(160deg,#0C1322,#111A2B);
  overflow:hidden;
}
.side-card .thumb img{width:100%;height:100%;object-fit:cover}
.side-card .cap{
  padding:12px 14px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.side-card .cap b{display:block;color:var(--text);font-size:14px;margin-bottom:2px}

/* ---------- cta strip ---------- */
.cta-strip-wrap{padding:0 0 96px}
.cta-strip{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  padding:32px 36px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:
    radial-gradient(520px 220px at 12% 0%,rgba(0,229,160,.12),transparent 70%),
    var(--bg-2);
  overflow:hidden;
}
.cta-strip h2{font-size:clamp(20px,2.4vw,28px);max-width:620px}
.cta-strip p{margin-top:8px;font-size:14px;color:var(--muted)}
.cta-strip .actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- cross nav ---------- */
.cross-nav{padding:0 0 96px}
.cross-nav h2{font-size:15px;color:var(--dim);font-weight:600;letter-spacing:.04em;margin-bottom:18px}
.cross-links{display:flex;flex-wrap:wrap;gap:12px}
.cross-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid var(--line-2);
  background:var(--bg-2);
  font-size:14px;
  color:var(--muted);
  transition:color var(--t),border-color var(--t),transform var(--t),background var(--t);
}
.cross-links a:hover{color:var(--green);border-color:var(--green-35);transform:translateY(-2px)}
.cross-links a.current{background:var(--green-12);border-color:rgba(0,229,160,.5);color:var(--green);font-weight:600}
.cross-links a .idx{font-size:12px;color:var(--dim);font-variant-numeric:tabular-nums}
.cross-links a:hover .idx{color:var(--green)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  align-items:start;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.8;max-width:300px}
.footer-contact{margin-top:16px;font-size:13px;color:var(--dim);font-variant-numeric:tabular-nums}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--green)}
.footer-qr{
  width:150px;
  padding:6px;
  border-radius:var(--r-sm);
  background:#F4F7F5;
}
.qr-inner{
  width:100%;
  aspect-ratio:1;
  border-radius:10px;
  background:
    repeating-linear-gradient(90deg,#0C1322 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#0C1322 0 6px,transparent 6px 12px),
    #F4F7F5;
  background-blend-mode:multiply;
  opacity:.86;
}
.footer-qr-note{margin-top:10px;font-size:12px;color:var(--dim);font-variant-numeric:tabular-nums}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--dim);
}
.footer-bottom a:hover{color:var(--green)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .faq-side{position:static;order:2;display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px}
}
@media (max-width:900px){
  .nav-links{
    position:absolute;
    top:calc(100% + 10px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:12px;
    border-radius:22px;
    background:rgba(9,14,24,.94);
    border:1px solid var(--line-2);
    backdrop-filter:blur(20px) saturate(140%);
    -webkit-backdrop-filter:blur(20px) saturate(140%);
    box-shadow:0 30px 60px -30px rgba(0,0,0,.9);
    max-height:70vh;
    overflow:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity var(--t),transform var(--t),visibility var(--t);
  }
  .nav-links.open{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:14px 16px;font-size:15px;color:rgba(255,255,255,.78);border-radius:14px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:var(--green-12);color:var(--green)}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .page-hero{padding:132px 0 44px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .faq-side{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-tight{padding:44px 0 64px}
  .cta-strip-wrap,.cross-nav{padding-bottom:64px}
  .hero-meta{font-size:12px;gap:0}
  .hero-meta span{padding:0 12px}
  .hero-actions .btn{width:100%}
  .cta-strip{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-strip .actions{width:100%}
  .cta-strip .actions .btn{width:100%}
  .filter-inner{padding:16px}
  .pill{height:38px;padding:0 15px;font-size:13.5px}
  .acc-trigger{font-size:16px;padding:18px 0}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr}
  .footer-qr{margin:0 auto}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;gap:8px}
  .nav-shell{height:58px;padding:0 10px 0 16px}
  .logo-mark{font-size:15.5px}
  .logo-sub{font-size:9px}
  .page-hero h1{font-size:28px}
  .page-hero .lead{font-size:15.5px}
  .cross-links a{height:42px;padding:0 16px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category5 */
:root{
  --bg:#070B14;
  --bg-2:#0C1322;
  --panel:#111A2B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#00E5A0;
  --brand-solid:#00B37E;
  --brand-soft:rgba(0,229,160,.18);
  --brand-line:rgba(0,229,160,.35);
  --orange:#FF7A2F;
  --orange-soft:rgba(255,122,47,.14);
  --text:#E8EEF7;
  --text-2:#9BA9BF;
  --text-3:#6B7A90;
  --ok:#2BD27B;
  --warn:#FFB020;
  --err:#FF5A5F;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:16px;
  --r-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.75);
  --shadow-glow:0 10px 30px -10px rgba(0,229,160,.55),0 0 0 1px rgba(0,229,160,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap-section:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block;flex:none}
::selection{background:rgba(0,229,160,.28);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:16px;left:0;right:0;
  z-index:200;
  display:flex;
  justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.nav-shell{
  pointer-events:auto;
  position:relative;
  width:min(1180px,100%);
  height:62px;
  display:flex;
  align-items:center;
  gap:26px;
  padding:0 12px 0 22px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.10),0 14px 34px -20px rgba(0,0,0,.9);
  transition:background .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.nav-shell.scrolled{
  background:rgba(9,14,24,.82);
  border-color:rgba(255,255,255,.14);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 20px 44px -22px rgba(0,0,0,.95);
}
.logo{
  display:inline-flex;
  flex-direction:column;
  line-height:1.1;
  flex:none;
}
.logo-mark{
  font-size:16px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--text);
}
.logo-sub{
  margin-top:3px;
  font-size:10px;
  letter-spacing:.08em;
  color:var(--brand);
  font-weight:600;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:24px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:14px;
  color:rgba(232,238,247,.62);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.nav-links a.active{
  padding:6px 16px;
  border-radius:var(--r-pill);
  background:var(--brand);
  color:#04120C;
  font-weight:700;
}
.nav-links a.active::after{display:none}
.nav-cta{flex:none}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  margin-left:auto;
  border-radius:50%;
  background:transparent;
  border:1px solid rgba(255,255,255,.16);
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-line);background:rgba(0,229,160,.08)}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;height:1.5px;
  background:var(--text);
  border-radius:2px;
  transition:background .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:1.5px;
  background:var(--text);
  border-radius:2px;
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.menu-open .nav-toggle span{background:transparent}
.menu-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
.menu-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#00B37E,#00E5A0);
  color:#04120C;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -10px rgba(0,229,160,.5),0 0 0 1px rgba(0,229,160,.4)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text);
}
.btn-ghost:hover{border-color:var(--brand-line);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.btn-link .arrow{transition:transform .2s var(--ease)}
.btn-link:hover .arrow{transform:translateX(3px)}
.btn-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  white-space:nowrap;
}
.badge-brand{background:rgba(0,229,160,.12);color:var(--brand)}
.badge-version{background:var(--orange-soft);color:var(--orange)}
.badge-ok{background:rgba(43,210,123,.14);color:var(--ok)}
.badge-neutral{background:rgba(255,255,255,.07);color:var(--text-2)}
.badge-warn{background:rgba(255,176,32,.14);color:var(--warn)}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  isolation:isolate;
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.55;
  z-index:-2;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.72) 0%,rgba(7,11,20,.93) 62%,var(--bg) 100%);
  z-index:-1;
}
.hero-inner{max-width:860px}
.hero-inner h1{
  margin:18px 0 0;
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.01em;
}
.hero-lead{
  margin-top:16px;
  font-size:17px;
  color:var(--text-2);
  max-width:640px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--gap-section) 0}
.section--tight{padding:64px 0 0}
.section-head{max-width:720px}
.section-tag{
  display:inline-block;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand);
  font-weight:700;
  text-transform:uppercase;
}
.section-head h2{
  margin-top:12px;
  font-size:clamp(22px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  color:var(--text-2);
  max-width:660px;
}

/* ---------- 两栏对照 ---------- */
.assure-grid{
  display:grid;
  grid-template-columns:minmax(0,4.4fr) minmax(0,7fr);
  gap:36px;
  align-items:start;
  margin-top:48px;
}
.assure-figure{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,#0C1322,#111A2B);
  margin-bottom:26px;
}
.assure-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:0;
}
.assure-figure figcaption{
  padding:10px 14px;
  font-size:13px;
  color:var(--text-3);
  border-top:1px solid var(--line);
}
.point-list{display:flex;flex-direction:column;gap:26px}
.point-item{display:flex;gap:14px}
.point-icon{
  flex:none;
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:rgba(0,229,160,.10);
  border:1px solid rgba(0,229,160,.22);
  color:var(--brand);
}
.point-item h3{
  font-size:17px;
  font-weight:600;
  line-height:1.4;
}
.point-item p{
  margin-top:6px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
}

/* ---------- 承诺卡 ---------- */
.state-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:6px 26px;
  box-shadow:var(--shadow-card);
}
.state-card-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:22px 0 8px;
}
.state-card-head h2{
  font-size:20px;
  font-weight:700;
}
.state-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:6px 20px;
  padding:18px 0;
  border-bottom:1px dashed rgba(255,255,255,.09);
  transition:background .2s var(--ease);
}
.state-row:last-child{border-bottom:0}
.state-row h3{
  font-size:16px;
  font-weight:600;
  line-height:1.5;
}
.state-row p{
  grid-column:1/2;
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.75;
}
.state-row .badge{
  grid-row:1/3;
  align-self:center;
  justify-self:end;
}
.state-row:hover h3{color:#fff}

/* ---------- 数据保留对照 ---------- */
.data-panel{
  margin-top:40px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:8px 26px 18px;
  max-width:860px;
}
.data-panel-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:8px;
  padding:18px 0 6px;
}
.data-panel-head h3{font-size:17px;font-weight:600}
.data-panel-head span{font-size:13px;color:var(--text-3)}
.data-row{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,1fr);
  gap:10px 20px;
  padding:14px 0;
  border-top:1px solid var(--line);
  font-size:14px;
}
.data-row span:nth-child(1){color:var(--text);font-weight:600}
.data-row span:nth-child(2){color:var(--text-2)}
.data-row span:nth-child(3){color:var(--brand);text-align:right;font-variant-numeric:tabular-nums}
.data-row--head{
  border-top:0;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
}
.data-row--head span{color:var(--text-3)!important;font-weight:600!important}

/* ---------- 更新时间线 ---------- */
.timeline{
  position:relative;
  margin-top:44px;
  padding-left:28px;
  border-left:2px solid rgba(0,229,160,.25);
  max-width:860px;
  display:flex;
  flex-direction:column;
  gap:32px;
}
.t-item{position:relative}
.t-item::before{
  content:"";
  position:absolute;
  left:-35px;
  top:9px;
  width:10px;height:10px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(0,229,160,.16);
}
.t-date{
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.t-item h3{
  margin-top:4px;
  font-size:17px;
  font-weight:600;
}
.t-item p{
  margin-top:6px;
  font-size:14.5px;
  color:var(--text-2);
  max-width:640px;
}

/* ---------- 细 CTA 条 ---------- */
.mini-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:26px 30px;
  border-radius:var(--r-md);
  border:1px solid rgba(0,229,160,.25);
  background:linear-gradient(120deg,rgba(0,229,160,.10),rgba(17,26,43,.9) 55%);
  margin-top:var(--gap-section);
}
.mini-cta h2{font-size:19px;font-weight:700}
.mini-cta p{margin-top:6px;font-size:14px;color:var(--text-2)}
.mini-cta .mini-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 分类互链 ---------- */
.cat-nav{padding:64px 0 0}
.cat-nav h2{
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
  letter-spacing:.04em;
}
.cat-pills{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:20px;
}
.cat-pill{
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  font-size:14px;
  color:var(--text-2);
  background:rgba(255,255,255,.02);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.cat-pill:hover{
  color:#fff;
  border-color:var(--brand-line);
  background:rgba(0,229,160,.06);
  transform:translateY(-2px);
}
.cat-pill:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.cat-pill.current{
  background:var(--brand-soft);
  border-color:rgba(0,229,160,.45);
  color:var(--brand);
  font-weight:600;
}
.cat-back{margin-top:28px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--gap-section);
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-2);
  max-width:300px;
  line-height:1.8;
}
.footer-contact{
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  letter-spacing:.02em;
}
.footer-col ul{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--brand)}
.footer-col a:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.footer-qr{
  margin-top:16px;
  width:140px;height:140px;
  border-radius:var(--r-sm);
  background:#F4F7F5;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:10px;
}
.qr-inner{
  width:120px;height:120px;
  border-radius:8px;
  background:
    repeating-linear-gradient(90deg,#0B1220 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#0B1220 0 6px,transparent 6px 12px),
    #E7EDEA;
  background-blend-mode:multiply;
  opacity:.82;
}
.footer-qr-note{
  margin-top:12px;
  font-size:12px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  justify-content:space-between;
  font-size:12px;
  color:var(--text-3);
}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .assure-grid{grid-template-columns:1fr;gap:32px}
  .assure-figure{max-width:520px}
}
@media (max-width:900px){
  :root{--gap-section:72px}
  .nav-links{
    position:fixed;
    inset:0;
    margin:0;
    padding:96px 24px 48px;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:rgba(7,11,20,.94);
    -webkit-backdrop-filter:blur(20px) saturate(140%);
    backdrop-filter:blur(20px) saturate(140%);
    border-radius:0;
    display:none;
    overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a{
    display:flex;
    align-items:center;
    min-height:56px;
    font-size:17px;
    color:var(--text);
    border-bottom:1px solid var(--line);
    padding:0 4px;
  }
  .nav-links a::after{display:none}
  .nav-links a.active{
    background:var(--brand-soft);
    color:var(--brand);
    border-radius:12px;
    padding:0 16px;
    border-bottom-color:transparent;
    justify-content:center;
  }
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .footer-grid{grid-template-columns:1fr 1fr}
  .page-hero{padding:132px 0 60px}
}
@media (max-width:640px){
  :root{--gap-section:64px}
  .hero-inner h1{font-size:28px}
  .hero-lead{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .state-card{padding:4px 18px}
  .state-row{grid-template-columns:1fr;gap:8px}
  .state-row .badge{grid-row:auto;justify-self:start}
  .data-panel{padding:4px 18px 12px}
  .data-row{grid-template-columns:1fr;gap:4px}
  .data-row span:nth-child(3){text-align:left}
  .data-row--head{display:none}
  .mini-cta{padding:22px 20px}
  .mini-cta .mini-actions{width:100%}
  .mini-cta .mini-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .cat-pill{height:44px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
}