/* roulang page: index */
:root{
  --bg-deep:#060912;
  --bg-mid:#0B1120;
  --panel:rgba(255,255,255,.05);
  --panel-strong:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --aqua:#2FE6D0;
  --aqua-hover:#5BF0DE;
  --nebula:#7A6BFF;
  --meteor:#FFB86B;
  --text:#E6ECF7;
  --text-2:#A8B4CC;
  --text-3:#6E7A94;
  --grad:linear-gradient(120deg,#2FE6D0,#6FA8FF,#7A6BFF);
  --radius-card:18px;
  --radius-btn:12px;
  --shadow-glow:0 12px 40px rgba(47,230,208,.14);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:Inter,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--text);
  background:linear-gradient(135deg,#060912 0%,#0B1120 55%,#080D1A 100%);
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(1.4px 1.4px at 18% 22%, rgba(255,255,255,.55), transparent 100%),
    radial-gradient(1.2px 1.2px at 72% 12%, rgba(47,230,208,.45), transparent 100%),
    radial-gradient(1.2px 1.2px at 42% 68%, rgba(255,255,255,.38), transparent 100%),
    radial-gradient(1.4px 1.4px at 86% 78%, rgba(122,107,255,.5), transparent 100%),
    radial-gradient(1px 1px at 8% 88%, rgba(255,255,255,.32), transparent 100%),
    radial-gradient(1px 1px at 58% 42%, rgba(255,255,255,.28), transparent 100%);
  background-size:620px 620px,820px 820px,720px 720px,900px 900px,520px 520px,760px 760px;
  opacity:.55;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
input{-webkit-appearance:none;appearance:none;}
:focus-visible{outline:2px solid var(--aqua);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(47,230,208,.3);}

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

/* ---------- Header ---------- */
.site-header{
  --hd-text:#12203C;
  --hd-text-2:#54637F;
  --hd-line:rgba(10,20,40,.10);
  --hd-soft:rgba(10,20,40,.05);
  position:sticky;
  top:0;
  z-index:60;
  background:#ffffff;
  border-bottom:1px solid var(--hd-line);
  box-shadow:0 2px 14px rgba(10,20,40,.06);
  transition:background-color .2s ease, box-shadow .2s ease, border-color .2s ease, backdrop-filter .2s ease;
}
.site-header.scrolled{
  --hd-text:#E6ECF7;
  --hd-text-2:#A8B4CC;
  --hd-line:rgba(255,255,255,.12);
  --hd-soft:rgba(255,255,255,.08);
  background:rgba(8,12,24,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 10px 34px rgba(0,0,0,.45);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;}
.brand-text{font-size:19px;font-weight:700;color:var(--hd-text);letter-spacing:.04em;transition:color .2s ease;}
.main-nav{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--hd-text-2);
  border-radius:8px;
  transition:color .2s ease, background-color .2s ease;
}
.nav-link:hover{color:var(--hd-text);background:var(--hd-soft);}
.nav-link.active{color:var(--hd-text);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--grad);
}
.header-right{display:flex;align-items:center;gap:14px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:42px;width:230px;
  padding:0 14px;
  border-radius:999px;
  background:var(--hd-soft);
  border:1px solid var(--hd-line);
  transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
}
.search-box:focus-within{border-color:rgba(47,230,208,.7);box-shadow:0 0 0 3px rgba(47,230,208,.16);}
.search-box input{
  flex:1;min-width:0;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--hd-text);
}
.search-box input::placeholder{color:var(--hd-text-2);}
.search-icon{width:16px;height:16px;flex:none;color:var(--hd-text-2);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--hd-line);
  background:var(--hd-soft);
  cursor:pointer;
  padding:0;
  align-items:center;justify-content:center;
  flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--hd-text);transition:transform .25s ease, opacity .25s ease;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-panel{
  display:none;
  border-top:1px solid var(--hd-line);
  background:rgba(8,12,24,.96);
  backdrop-filter:blur(14px);
  padding:16px 20px 22px;
}
.mobile-panel.open{display:block;}
.mobile-link{
  display:block;padding:13px 4px;font-size:16px;color:#C7D2E6;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-link.active{color:#2FE6D0;font-weight:600;}
.mobile-search{margin:16px 0 14px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease, box-shadow .25s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}
.btn-primary{background:var(--grad);color:#04121A;box-shadow:0 0 24px rgba(47,230,208,.35);}
.btn-primary:hover{box-shadow:0 0 36px rgba(47,230,208,.55);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(47,230,208,.28);}
.btn-ghost{background:transparent;border-color:rgba(47,230,208,.55);color:var(--aqua);}
.btn-ghost:hover{background:rgba(47,230,208,.1);}
.btn-ghost:active{background:rgba(47,230,208,.16);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}

/* ---------- Common ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;
  border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:#BFF7EF;
  background:rgba(47,230,208,.10);
  border:1px solid rgba(47,230,208,.32);
}
.section{padding:96px 0;position:relative;z-index:1;}
.section-alt{background:rgba(255,255,255,.02);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-head h2{
  margin:16px 0 10px;
  font-size:30px;line-height:1.35;font-weight:700;letter-spacing:.02em;color:#F2F6FF;
}
.section-head p{margin:0;max-width:640px;color:var(--text-2);font-size:15px;}
.section-head.center{flex-direction:column;align-items:center;text-align:center;}
.section-head.center p{margin:0 auto;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--aqua);
  transition:color .2s ease, gap .2s ease;
  white-space:nowrap;
}
.text-link:hover{color:var(--aqua-hover);gap:10px;}
.glass{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:#9FF3E7;background:rgba(47,230,208,.12);
  border:1px solid rgba(47,230,208,.3);
}
.badge-warm{color:#FFD7A8;background:rgba(255,184,107,.12);border-color:rgba(255,184,107,.32);}

/* ---------- Hero ---------- */
.hero{position:relative;z-index:1;overflow:hidden;padding:82px 0 96px;}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(115deg, rgba(6,9,18,.96) 0%, rgba(6,9,18,.88) 48%, rgba(11,17,32,.74) 100%);
}
.hero-glow{
  position:absolute;right:-140px;top:-120px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle, rgba(122,107,255,.28) 0%, rgba(47,230,208,.12) 45%, transparent 70%);
  filter:blur(10px);
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero-copy h1{
  margin:22px 0 18px;
  font-size:46px;line-height:1.24;font-weight:800;letter-spacing:.01em;
  color:#F6FAFF;
}
.hero-copy h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin:0 0 30px;font-size:17px;color:var(--text-2);max-width:520px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.trust-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3);}
.trust-line span{white-space:nowrap;}
.trust-line .dot{color:rgba(255,255,255,.28);}
.hero-visual{position:relative;padding:10px 6px 26px;}
.hero-panel{padding:20px 20px 22px;box-shadow:0 24px 60px rgba(0,0,0,.45);}
.hero-panel-top{display:flex;align-items:center;gap:8px;padding-bottom:14px;border-bottom:1px solid var(--line);}
.hero-panel-top .dotc{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.24);}
.hero-panel-title{margin-left:8px;font-size:13px;letter-spacing:.06em;color:var(--text-2);}
.hero-panel-list{display:flex;flex-direction:column;gap:10px;margin:16px 0 18px;}
.hp-row{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);}
.hp-tag{font-size:12px;font-weight:600;color:#BFF7EF;background:rgba(47,230,208,.14);padding:2px 9px;border-radius:999px;flex:none;}
.hp-tag.warm{color:#FFD7A8;background:rgba(255,184,107,.14);}
.hp-tag.violet{color:#CFC8FF;background:rgba(122,107,255,.18);}
.hp-name{font-size:14px;color:#DCE5F5;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hp-state{font-size:12px;color:var(--text-3);flex:none;}
.hero-panel-bar{height:6px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
.hero-panel-bar span{display:block;height:100%;border-radius:999px;background:var(--grad);}
.hero-panel-foot{margin:12px 0 0;font-size:13px;color:var(--text-3);}
.float-card{
  position:absolute;
  padding:12px 16px;
  font-size:13px;color:var(--text-2);
  box-shadow:0 16px 40px rgba(0,0,0,.45);
}
.float-card b{display:block;font-size:18px;color:#EAF3FF;font-weight:700;letter-spacing:.02em;}
.float-a{left:-24px;bottom:44px;transform:rotate(-3deg);}
.float-b{right:-10px;top:6px;transform:rotate(2.5deg);}

/* ---------- Features ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feature-card{
  padding:28px;
  display:flex;flex-direction:column;gap:12px;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(47,230,208,.4);box-shadow:var(--shadow-glow);}
.feature-wide{grid-column:span 6;}
.feature-narrow{grid-column:span 3;justify-content:space-between;}
.feature-num{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--aqua);}
.feature-card h3{margin:0;font-size:20px;line-height:1.45;font-weight:700;color:#F2F6FF;}
.feature-card p{margin:0;font-size:14.5px;color:var(--text-2);}
.feature-img{margin-top:auto;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid var(--line);}
.feature-wide{padding-bottom:26px;}
.feature-narrow .feature-num{margin-bottom:4px;}

/* ---------- Scenario ---------- */
.scenario-grid{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start;}
.scenario-tabs{display:flex;flex-direction:column;gap:12px;}
.scenario-tab{
  text-align:left;padding:16px 18px;border-radius:14px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  font-size:15px;font-weight:600;color:#C9D5E8;cursor:pointer;
  transition:border-color .2s ease, background-color .2s ease, transform .2s ease, color .2s ease;
}
.scenario-tab:hover{transform:translateX(3px);border-color:rgba(47,230,208,.4);}
.scenario-tab.is-active{background:rgba(47,230,208,.12);border-color:rgba(47,230,208,.5);color:#EAFBF8;}
.scenario-tab small{display:block;margin-top:4px;font-size:12.5px;font-weight:400;color:var(--text-3);}
.scenario-panel{padding:22px;box-shadow:0 20px 50px rgba(0,0,0,.35);}
.scenario-figure{margin:0;border-radius:14px;overflow:hidden;border:1px solid var(--line);}
.scenario-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.scenario-points{list-style:none;margin:20px 0 18px;padding:0;display:flex;flex-direction:column;gap:10px;}
.scenario-points li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);}
.scenario-points li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:50%;
  background:var(--grad);box-shadow:0 0 12px rgba(47,230,208,.6);
}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(47,230,208,.42);box-shadow:var(--shadow-glow);}
.news-thumb{
  position:relative;aspect-ratio:16/9;
  background-color:#101A33;background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,9,18,0) 42%,rgba(6,9,18,.6) 100%);}
.thumb-1{background-image:url('/assets/images/coverpic/cover-3.png');}
.thumb-2{background-image:url('/assets/images/coverpic/cover-4.png');}
.thumb-3{background-image:url('/assets/images/coverpic/cover-5.webp');}
.thumb-4{background-image:url('/assets/images/coverpic/cover-6.png');}
.thumb-5{background-image:url('/assets/images/coverpic/cover-7.webp');}
.thumb-6{background-image:url('/assets/images/coverpic/cover-8.webp');}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{margin:0;font-size:18px;line-height:1.5;font-weight:700;color:#F2F6FF;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{margin:0;font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:64px 24px;text-align:center;
  background:var(--panel);border:1px dashed var(--line-strong);border-radius:var(--radius-card);
}
.empty-state p{margin:0;color:var(--text-2);font-size:15px;}
.empty-star{width:44px;height:44px;border-radius:50%;background:rgba(47,230,208,.12);border:1px solid rgba(47,230,208,.35);display:flex;align-items:center;justify-content:center;color:var(--aqua);}

/* ---------- Social proof ---------- */
.partner-strip{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px;
  padding:22px;border-radius:var(--radius-card);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
}
.partner-strip span{
  padding:8px 18px;border-radius:999px;
  font-size:14px;color:var(--text-3);
  border:1px solid rgba(255,255,255,.08);
  filter:grayscale(1);
  transition:color .25s ease, border-color .25s ease, filter .25s ease;
}
.partner-strip span:hover{color:#DCE5F5;border-color:rgba(47,230,208,.4);filter:grayscale(0);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:26px 0;}
.stat-card{padding:24px;border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);}
.stat-card b{display:block;font-size:28px;font-weight:800;letter-spacing:.01em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat-card span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-2);}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{padding:26px;border-radius:var(--radius-card);background:var(--panel);border:1px solid var(--line);display:flex;flex-direction:column;gap:16px;}
.quote-card p{margin:0;font-size:14.5px;color:#D3DDEE;}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:auto;}
.avatar{width:40px;height:40px;border-radius:50%;flex:none;background:linear-gradient(120deg,rgba(47,230,208,.35),rgba(122,107,255,.4));border:1px solid rgba(255,255,255,.16);}
.quote-user strong{display:block;font-size:14px;color:#EEF4FF;font-weight:600;}
.quote-user small{display:block;font-size:12.5px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  position:relative;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:16px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .25s ease, box-shadow .25s ease;
}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,#2FE6D0,#7A6BFF);}
.faq-item:hover{border-color:rgba(47,230,208,.35);box-shadow:var(--shadow-glow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px 20px 28px;
  font-size:16px;font-weight:600;color:#EDF3FF;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{flex:none;color:var(--aqua);transition:transform .25s ease;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 24px 22px 28px;font-size:14.5px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-wrap{
  position:relative;overflow:hidden;
  padding:56px 48px;border-radius:24px;
  background:linear-gradient(120deg, rgba(47,230,208,.14), rgba(122,107,255,.18));
  border:1px solid rgba(47,230,208,.3);
  text-align:center;
}
.cta-wrap::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,230,208,.85),transparent);
}
.cta-wrap h2{margin:14px 0 12px;font-size:30px;font-weight:700;color:#F4F9FF;}
.cta-wrap p{margin:0 auto 28px;max-width:620px;color:var(--text-2);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:24px;
  padding:64px 0 96px;
  background:rgba(4,7,15,.72);
  border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand .brand-text{color:#F0F5FF;}
.footer-brand p{margin:16px 0 0;font-size:14px;color:var(--text-3);max-width:300px;}
.footer-col h3{margin:0 0 16px;font-size:14px;font-weight:700;letter-spacing:.08em;color:#DCE5F5;}
.footer-col a,.footer-col span{display:block;font-size:14px;color:var(--text-3);margin-bottom:10px;transition:color .2s ease;}
.footer-col a:hover{color:var(--aqua);}
.footer-bottom{
  margin-top:44px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- Bottom bar ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(8,12,24,.92);
  border-top:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transform:translateY(110%);
  transition:transform .28s ease;
  box-shadow:0 -12px 34px rgba(0,0,0,.45);
}
.bottom-bar.show{transform:translateY(0);}
.bottom-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;}
.bottom-bar-text{margin:0;font-size:14px;color:var(--text-2);}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .hero-copy h1{font-size:38px;}
  .feature-wide{grid-column:span 12;}
  .feature-narrow{grid-column:span 6;}
  .scenario-grid{grid-template-columns:1fr;}
  .scenario-tabs{flex-direction:row;flex-wrap:wrap;}
  .scenario-tab{flex:1 1 200px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .main-nav{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:56px 0;}
  .hero{padding:52px 0 64px;}
  .hero-copy h1{font-size:29px;line-height:1.34;}
  .hero-sub{font-size:15.5px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px;}
  .section-head h2{font-size:23px;}
  .feature-narrow{grid-column:span 12;}
  .news-grid{grid-template-columns:1fr;gap:18px;}
  .stat-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-card{padding:18px;}
  .stat-card b{font-size:22px;}
  .cta-wrap{padding:36px 22px;}
  .cta-wrap h2{font-size:23px;}
  .float-a{left:-6px;bottom:18px;}
  .float-b{right:-4px;top:-6px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .bottom-bar-text{display:none;}
  .bottom-bar-inner{height:auto;padding:12px 0;}
  .bottom-bar-inner .btn{width:100%;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-copy h1{font-size:26px;}
  .trust-line{font-size:12.5px;gap:8px;}
  .stat-grid{grid-template-columns:1fr;}
  .floating-none{}
  .float-card{position:static;transform:none;margin-top:12px;}
  .hero-visual{padding:0;}
}

/* roulang page: article */
:root{
  --bg-deep:#060912;
  --bg-mid:#0B1120;
  --panel:rgba(255,255,255,.05);
  --panel-strong:rgba(255,255,255,.08);
  --panel-border:rgba(255,255,255,.10);
  --brand:#2FE6D0;
  --brand-hover:#5BF0DE;
  --violet:#7A6BFF;
  --orange:#FFB86B;
  --text:#E6ECF7;
  --text-2:#A8B4CC;
  --text-3:#6E7A94;
  --ink:#0C1526;
  --ink-2:#4A5875;
  --line-light:rgba(10,20,40,.10);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-btn:12px;
  --grad:linear-gradient(120deg,#2FE6D0,#6FA8FF,#7A6BFF);
  --shadow-card:0 12px 40px rgba(47,230,208,.14);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Inter,Arial,sans-serif;
  background:linear-gradient(135deg,#060912 0%,#0B1120 55%,#0A0F1E 100%);
  background-attachment:fixed;
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.6;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 18%, rgba(255,255,255,.35), transparent 60%),
    radial-gradient(1.2px 1.2px at 78% 12%, rgba(47,230,208,.40), transparent 60%),
    radial-gradient(1.1px 1.1px at 34% 62%, rgba(255,255,255,.28), transparent 60%),
    radial-gradient(1.6px 1.6px at 62% 78%, rgba(122,107,255,.42), transparent 60%),
    radial-gradient(1px 1px at 88% 54%, rgba(255,255,255,.24), transparent 60%),
    radial-gradient(1.1px 1.1px at 46% 34%, rgba(47,230,208,.28), transparent 60%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:.01em;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#FFFFFF;
  border-bottom:1px solid var(--line-light);
  box-shadow:0 6px 24px rgba(10,20,40,.06);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease,backdrop-filter .2s ease;
}
.site-header.is-scrolled{
  background:rgba(8,12,22,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--panel-border);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:rgba(47,230,208,.10);border:1px solid rgba(47,230,208,.22)}
.brand-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.02em;transition:color .2s ease}
.site-header.is-scrolled .brand-text{color:var(--text)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px 10px;
  font-size:15px;
  font-weight:500;
  color:var(--ink-2);
  border-radius:10px;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(12,21,38,.05)}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad);
}
.site-header.is-scrolled .nav-link{color:var(--text-2)}
.site-header.is-scrolled .nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.site-header.is-scrolled .nav-link.active{color:var(--text)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:220px;
  padding:8px 14px;
  border-radius:999px;
  background:#F3F6FB;
  border:1px solid var(--line-light);
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.search-box i{font-size:13px;color:var(--ink-2)}
.search-box input{width:100%;border:0;outline:none;background:transparent;font-size:14px;color:var(--ink)}
.search-box input::placeholder{color:#8B98AE}
.search-box:focus-within{border-color:rgba(47,230,208,.6);box-shadow:0 0 0 3px rgba(47,230,208,.16)}
.site-header.is-scrolled .search-box{background:rgba(255,255,255,.06);border-color:var(--panel-border)}
.site-header.is-scrolled .search-box input{color:var(--text)}
.site-header.is-scrolled .search-box input::placeholder{color:var(--text-3)}
.site-header.is-scrolled .search-box i{color:var(--text-2)}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-light);color:var(--ink);align-items:center;justify-content:center;transition:background .18s ease}
.site-header.is-scrolled .menu-toggle{color:var(--text);border-color:var(--panel-border)}
.menu-toggle:hover{background:rgba(12,21,38,.06)}
.mobile-drawer{display:none;border-top:1px solid var(--panel-border);background:rgba(8,12,22,.96);backdrop-filter:blur(14px)}
.mobile-drawer.open{display:block}
.mobile-drawer .container{padding-top:12px;padding-bottom:16px;display:flex;flex-direction:column;gap:6px}
.mobile-drawer a{padding:12px 14px;border-radius:12px;font-size:15px;color:var(--text-2);border:1px solid transparent}
.mobile-drawer a.active,.mobile-drawer a:hover{color:var(--text);background:var(--panel);border-color:var(--panel-border)}

@media(max-width:1024px){
  .search-box{width:170px}
}
@media(max-width:900px){
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .search-box{display:none}
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--grad);color:#04121A;box-shadow:0 0 24px rgba(47,230,208,.35)}
.btn-primary:hover{background:var(--grad);transform:translateY(-1px);box-shadow:0 0 34px rgba(47,230,208,.5)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 18px rgba(47,230,208,.3)}
.btn-ghost{background:transparent;border-color:rgba(47,230,208,.55);color:var(--brand)}
.btn-ghost:hover{background:rgba(47,230,208,.10);color:var(--brand-hover)}
.btn-light{background:#FFFFFF;color:var(--ink);border-color:var(--line-light)}
.btn-light:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.28)}
.btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,a:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:10px}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:13px;font-weight:600;
  background:rgba(47,230,208,.12);
  border:1px solid rgba(47,230,208,.3);
  color:var(--brand);
}
.badge-violet{background:rgba(122,107,255,.14);border-color:rgba(122,107,255,.34);color:#B7AEFF}
.tag{
  display:inline-block;
  padding:7px 15px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:var(--panel);
  border:1px solid var(--panel-border);
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.tag:hover{color:var(--brand);border-color:rgba(47,230,208,.45);background:rgba(47,230,208,.08)}

/* ============ 页头文章区 ============ */
.article-hero{position:relative;z-index:1;padding:34px 0 44px;overflow:hidden}
.article-hero::after{
  content:"";
  position:absolute;top:-160px;right:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(122,107,255,.28),transparent 68%);
  pointer-events:none;
}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumbs a{color:var(--text-2);transition:color .18s ease}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .current{max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:40px;align-items:center}
.article-head h1{font-size:40px;line-height:1.32;margin:16px 0 18px;letter-spacing:.01em}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22)}
.article-cover{
  position:relative;
  margin:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--panel-border);
  background:linear-gradient(120deg,rgba(47,230,208,.16),rgba(122,107,255,.16));
  box-shadow:0 20px 60px rgba(0,0,0,.4);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(6,9,18,.05),rgba(6,9,18,.55));
}
@media(max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .article-head h1{font-size:32px}
}
@media(max-width:520px){
  .article-head h1{font-size:26px;line-height:1.4}
}

/* ============ 正文布局 ============ */
.article-main{position:relative;z-index:1;padding-bottom:20px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:start}
.article-body{
  max-width:780px;
  font-size:17px;
  line-height:2;
  color:var(--text-2);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;
  font-size:25px;
  line-height:1.5;
  color:var(--text);
  margin:2.4em 0 1em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:var(--grad);
}
.article-body h3{font-size:19px;line-height:1.6;color:var(--text);margin:1.8em 0 .8em}
.article-body h4{font-size:17px;color:var(--text);margin:1.4em 0 .6em}
.article-body img{max-width:100%;height:auto;border-radius:14px;margin:1.6em auto}
.article-body figure{margin:1.8em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px}
.article-body blockquote{
  margin:1.8em 0;
  padding:18px 22px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-left:3px solid var(--brand);
  color:var(--text-2);
  box-shadow:0 0 24px rgba(47,230,208,.10);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.4em}
.article-body ul li{list-style:disc;margin:.45em 0}
.article-body ol li{list-style:decimal;margin:.45em 0}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(47,230,208,.35);transition:color .18s ease,border-color .18s ease}
.article-body a:hover{color:var(--brand-hover);border-color:var(--brand-hover)}
.article-body strong{color:var(--text);font-weight:700}
.article-body table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  margin:1.8em 0;
  font-size:15px;
  border:1px solid var(--panel-border);
  border-radius:14px;
  overflow:hidden;
}
.article-body thead th{background:rgba(255,255,255,.07);color:var(--text);font-weight:700}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--panel-border)}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{background:rgba(255,255,255,.08);padding:2px 7px;border-radius:6px;font-size:.92em;color:var(--brand)}
.article-empty{
  padding:48px 32px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--panel-border);
  text-align:center;
}
.article-empty i{font-size:30px;color:var(--brand);opacity:.8}
.article-empty h2{font-size:22px;margin:16px 0 10px;padding:0}
.article-empty h2::before{display:none}
.article-empty p{margin-bottom:22px}

/* 侧栏 */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.aside-card{
  padding:20px;
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--panel-border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.aside-card h3{font-size:15px;margin-bottom:14px;color:var(--text)}
.aside-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2)}
.aside-list .row{display:flex;justify-content:space-between;gap:12px}
.aside-list .row span:first-child{color:var(--text-3)}
.aside-list .row span:last-child{color:var(--text-2);text-align:right;word-break:break-all}
.aside-links{display:flex;flex-direction:column;gap:8px}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;
  border-radius:12px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid transparent;
  background:rgba(255,255,255,.03);
  transition:color .18s ease,border-color .18s ease,background .18s ease,transform .18s ease;
}
.aside-links a:hover{color:var(--text);border-color:rgba(47,230,208,.4);background:rgba(47,230,208,.08);transform:translateX(2px)}
.aside-links i{font-size:12px;color:var(--text-3)}
@media(max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:32px}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .article-aside .aside-card{flex:1 1 260px}
}

/* ============ 文章底部扩展 ============ */
.article-extra{position:relative;z-index:1;padding:56px 0 0}
.extra-block{border-top:1px solid var(--panel-border);padding-top:32px;margin-top:36px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.share-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.share-row span{font-size:14px;color:var(--text-3);margin-right:4px}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;
  font-size:14px;color:var(--text-2);
  background:var(--panel);border:1px solid var(--panel-border);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.share-btn:hover{color:var(--brand);border-color:rgba(47,230,208,.45);transform:translateY(-2px)}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.section-head h2{font-size:28px}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--brand-hover)}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.card{
  display:flex;flex-direction:column;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--panel-border);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,230,208,.4);box-shadow:var(--shadow-card)}
.card-media{position:relative;overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.5}
.card-body p{font-size:14px;color:var(--text-3);line-height:1.7}
.card-foot{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto}
@media(max-width:900px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.card-grid{grid-template-columns:1fr}}

/* ============ FAQ ============ */
.faq-section{position:relative;z-index:1;padding:72px 0 0}
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  border-radius:var(--radius-lg);
  background:var(--panel);
  border:1px solid var(--panel-border);
  border-left:3px solid var(--brand);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(47,230,208,.42);box-shadow:0 0 26px rgba(47,230,208,.12)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{font-size:14px;color:var(--brand);transition:transform .2s ease}
.faq-item[open] summary i{transform:rotate(45deg)}
.faq-item .faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.9}

/* ============ CTA ============ */
.cta-section{position:relative;z-index:1;padding:72px 0 84px}
.cta-box{
  position:relative;
  overflow:hidden;
  padding:48px 40px;
  border-radius:24px;
  background:linear-gradient(120deg,rgba(47,230,208,.14),rgba(122,107,255,.14));
  border:1px solid var(--panel-border);
  text-align:center;
}
.cta-box::before{
  content:"";
  position:absolute;top:-140px;left:50%;transform:translateX(-50%);
  width:460px;height:300px;
  background:radial-gradient(circle,rgba(47,230,208,.28),transparent 70%);
  pointer-events:none;
}
.cta-box h2{font-size:30px;margin-bottom:14px;position:relative}
.cta-box p{max-width:660px;margin:0 auto 26px;color:var(--text-2);font-size:15px;position:relative}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative}
@media(max-width:640px){
  .cta-box{padding:34px 22px}
  .cta-box h2{font-size:24px}
  .cta-actions .btn{width:100%}
}

/* ============ 页脚 ============ */
.site-footer{position:relative;z-index:1;padding:64px 0 84px;border-top:1px solid var(--panel-border);background:rgba(4,7,14,.6)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.8;max-width:320px}
.footer-brand .brand-text{color:var(--text)}
.footer-col h3{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col a,.footer-col span{display:block;font-size:14px;color:var(--text-3);margin-bottom:10px;transition:color .18s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--panel-border);
  font-size:13px;color:var(--text-3);
}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}

/* ============ 底部转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:140;
  transform:translateY(120%);
  transition:transform .28s ease;
  background:rgba(8,12,22,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--panel-border);
}
.sticky-cta.show{transform:translateY(0)}
.sticky-cta.close{display:none}
.sticky-cta-inner{display:flex;align-items:center;gap:16px;min-height:64px}
.sticky-text{font-size:14px;color:var(--text-2)}
.sticky-cta-inner .btn{margin-left:auto}
.sticky-close{width:34px;height:34px;border-radius:10px;color:var(--text-3);display:inline-flex;align-items:center;justify-content:center;transition:color .18s ease,background .18s ease}
.sticky-close:hover{color:var(--text);background:var(--panel)}
@media(max-width:640px){
  .sticky-text{display:none}
  .sticky-cta-inner .btn{margin-left:0;width:100%}
  .sticky-close{position:absolute;right:10px;top:-42px;background:rgba(8,12,22,.92);border:1px solid var(--panel-border)}
}

/* roulang page: category1 */
:root{
    --bg-deep:#060912;
    --bg-mid:#0B1120;
    --panel:rgba(255,255,255,.05);
    --panel-strong:rgba(255,255,255,.075);
    --border:rgba(255,255,255,.10);
    --border-strong:rgba(255,255,255,.18);
    --teal:#2FE6D0;
    --teal-hover:#5BF0DE;
    --nebula:#7A6BFF;
    --meteor:#FFB86B;
    --text:#E6ECF7;
    --text-2:#A8B4CC;
    --text-3:#6E7A94;
    --ink:#0B1120;
    --ink-2:#3A4358;
    --radius-card:18px;
    --radius-btn:12px;
    --grad:linear-gradient(120deg,#2FE6D0,#6FA8FF,#7A6BFF);
    --shadow-card:0 12px 40px rgba(47,230,208,.14);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    padding-bottom:88px;
    font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    letter-spacing:.02em;
    color:var(--text);
    background:linear-gradient(135deg,#060912 0%,#0B1120 55%,#0A1526 100%);
    background-attachment:fixed;
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    opacity:.75;
    background-image:
      radial-gradient(1.3px 1.3px at 7% 12%,rgba(255,255,255,.55),transparent 100%),
      radial-gradient(1px 1px at 22% 38%,rgba(47,230,208,.45),transparent 100%),
      radial-gradient(1.4px 1.4px at 38% 9%,rgba(255,255,255,.40),transparent 100%),
      radial-gradient(1px 1px at 54% 46%,rgba(122,107,255,.50),transparent 100%),
      radial-gradient(1.2px 1.2px at 68% 20%,rgba(255,255,255,.45),transparent 100%),
      radial-gradient(1px 1px at 82% 58%,rgba(47,230,208,.40),transparent 100%),
      radial-gradient(1.5px 1.5px at 92% 30%,rgba(255,255,255,.35),transparent 100%),
      radial-gradient(1px 1px at 15% 74%,rgba(255,255,255,.30),transparent 100%),
      radial-gradient(1.2px 1.2px at 46% 84%,rgba(122,107,255,.38),transparent 100%),
      radial-gradient(1px 1px at 76% 90%,rgba(255,255,255,.28),transparent 100%);
  }
  img{max-width:100%;display:block;border-radius:14px}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  ul{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  h1,h2,h3{font-weight:700;letter-spacing:.02em}
  :focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:8px}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 20px;
    position:relative;
    z-index:2;
  }
  @media (min-width:768px){
    .container{padding:0 32px}
  }

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:#ffffff;
    border-bottom:1px solid rgba(10,20,40,.08);
    box-shadow:0 6px 24px rgba(10,20,40,.06);
    transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .site-header.is-scrolled{
    background:rgba(6,9,18,.86);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom-color:rgba(255,255,255,.10);
    box-shadow:0 10px 34px rgba(0,0,0,.38);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:72px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:none}
  .brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px}
  .brand-text{
    font-size:19px;
    font-weight:700;
    color:var(--ink);
    letter-spacing:.01em;
    transition:color .2s ease;
    white-space:nowrap;
  }
  .site-header.is-scrolled .brand-text{color:var(--text)}

  .main-nav{display:flex;align-items:center;gap:4px;margin-left:12px}
  .nav-link{
    position:relative;
    padding:9px 15px;
    border-radius:10px;
    font-size:15px;
    font-weight:500;
    color:var(--ink-2);
    transition:color .2s ease,background .2s ease;
    white-space:nowrap;
  }
  .nav-link:hover{color:var(--ink);background:rgba(10,20,40,.05)}
  .nav-link.active{color:var(--ink);font-weight:700}
  .nav-link.active::after{
    content:"";
    position:absolute;
    left:15px;right:15px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--grad);
  }
  .site-header.is-scrolled .nav-link{color:var(--text-2)}
  .site-header.is-scrolled .nav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
  .site-header.is-scrolled .nav-link.active{color:#fff}

  .header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
  .search-box{
    display:flex;
    align-items:center;
    gap:8px;
    background:#F3F6FC;
    border:1px solid rgba(10,20,40,.08);
    border-radius:999px;
    padding:8px 14px;
    transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .search-box:focus-within{border-color:rgba(47,230,208,.6);box-shadow:0 0 0 3px rgba(47,230,208,.16)}
  .search-box svg{width:16px;height:16px;flex:none;stroke:#6E7A94;fill:none;stroke-width:1.8}
  .search-box input{
    width:132px;
    border:0;
    background:transparent;
    outline:none;
    font-size:14px;
    color:var(--ink);
  }
  .search-box input::placeholder{color:#8C97AD}
  .site-header.is-scrolled .search-box{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
  .site-header.is-scrolled .search-box svg{stroke:var(--text-3)}
  .site-header.is-scrolled .search-box input{color:var(--text)}
  .site-header.is-scrolled .search-box input::placeholder{color:var(--text-3)}

  .nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:42px;height:42px;
    border-radius:12px;
    border:1px solid rgba(10,20,40,.12);
    background:transparent;
    cursor:pointer;
    transition:background .2s ease,border-color .2s ease;
  }
  .nav-toggle svg{width:20px;height:20px;stroke:var(--ink);stroke-width:1.9;fill:none}
  .site-header.is-scrolled .nav-toggle{border-color:rgba(255,255,255,.16)}
  .site-header.is-scrolled .nav-toggle svg{stroke:var(--text)}

  .mobile-drawer{
    display:none;
    flex-direction:column;
    gap:4px;
    padding:10px 20px 18px;
    background:#fff;
    border-top:1px solid rgba(10,20,40,.08);
  }
  .mobile-drawer.is-open{display:flex}
  .mobile-drawer .nav-link{padding:12px 14px}
  .site-header.is-scrolled .mobile-drawer{background:rgba(6,9,18,.96);border-top-color:rgba(255,255,255,.10)}

  /* ---------- Buttons ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 24px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
    white-space:nowrap;
  }
  .btn-sm{padding:9px 18px;font-size:14px}
  .btn-primary{
    background:var(--grad);
    color:#04121A;
    box-shadow:0 0 24px rgba(47,230,208,.35);
  }
  .btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 36px rgba(47,230,208,.55)}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 16px rgba(47,230,208,.30)}
  .btn-ghost{
    background:transparent;
    border-color:rgba(47,230,208,.55);
    color:var(--teal);
  }
  .btn-ghost:hover{background:rgba(47,230,208,.10);border-color:var(--teal-hover);color:var(--teal-hover)}
  .btn-ghost:active{background:rgba(47,230,208,.16)}

  /* ---------- Badge / tag ---------- */
  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 13px;
    border-radius:999px;
    font-size:13px;
    font-weight:600;
    letter-spacing:.04em;
    color:var(--teal);
    background:rgba(47,230,208,.10);
    border:1px solid rgba(47,230,208,.28);
  }
  .badge-warm{color:var(--meteor);background:rgba(255,184,107,.10);border-color:rgba(255,184,107,.30)}

  /* ---------- Banner ---------- */
  .page-banner{
    position:relative;
    padding:78px 0 66px;
    background-image:linear-gradient(120deg,rgba(6,9,18,.94) 0%,rgba(6,9,18,.80) 46%,rgba(11,17,32,.70) 100%),url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid rgba(255,255,255,.08);
    overflow:hidden;
  }
  .breadcrumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-3);
    margin-bottom:20px;
  }
  .breadcrumb a:hover{color:var(--teal)}
  .page-banner h1{
    margin:16px 0 14px;
    font-size:clamp(28px,4.4vw,44px);
    line-height:1.28;
    font-weight:800;
    max-width:820px;
  }
  .page-banner h1 .hl{
    background:var(--grad);
    -webkit-background-clip:text;
    background-clip:text;
    color:transparent;
  }
  .banner-sub{
    max-width:620px;
    font-size:17px;
    color:var(--text-2);
    line-height:1.8;
  }
  .banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .banner-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-top:26px;
    font-size:14px;
    color:var(--text-2);
  }
  .banner-meta li{display:flex;align-items:center;gap:10px}
  .banner-meta li+li::before{
    content:"";
    width:4px;height:4px;
    border-radius:50%;
    background:var(--teal);
    opacity:.8;
  }
  .stat-strip{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:16px;
    margin-top:-34px;
    position:relative;
    z-index:5;
  }
  .stat-item{
    background:var(--panel);
    border:1px solid var(--border);
    border-radius:16px;
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    padding:18px 20px;
  }
  .stat-item strong{display:block;font-size:24px;font-weight:800;color:var(--teal);line-height:1.3}
  .stat-item span{font-size:13px;color:var(--text-3)}

  /* ---------- Section ---------- */
  .section{padding:88px 0;position:relative;z-index:2}
  .section-head{max-width:720px;margin-bottom:44px}
  .section-head h2{
    font-size:clamp(24px,3vw,30px);
    line-height:1.4;
    margin:14px 0 12px;
    font-weight:800;
  }
  .section-head p{color:var(--text-2);font-size:16px}

  /* ---------- Layout with anchor ---------- */
  .layout-with-aside{
    display:grid;
    grid-template-columns:212px minmax(0,1fr);
    gap:48px;
    align-items:start;
  }
  .anchor-nav{
    position:sticky;
    top:96px;
    padding:20px 18px;
    background:var(--panel);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
  }
  .anchor-title{
    font-size:12px;
    letter-spacing:.18em;
    color:var(--text-3);
    margin-bottom:14px;
  }
  .anchor-link{
    display:block;
    padding:9px 12px;
    border-radius:10px;
    font-size:14px;
    color:var(--text-2);
    border-left:2px solid transparent;
    transition:color .2s ease,background .2s ease,border-color .2s ease;
  }
  .anchor-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
  .anchor-link.is-active{
    color:var(--teal);
    border-left-color:var(--teal);
    background:rgba(47,230,208,.08);
    font-weight:600;
  }

  .group{margin-bottom:72px}
  .group:last-child{margin-bottom:0}
  .group-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:26px}
  .group-index{
    flex:none;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:46px;height:46px;
    border-radius:14px;
    font-size:15px;
    font-weight:800;
    color:#04121A;
    background:var(--grad);
    box-shadow:0 0 22px rgba(47,230,208,.28);
  }
  .group-head h2{font-size:23px;line-height:1.45;font-weight:700}
  .group-head p{color:var(--text-2);font-size:15px;margin-top:4px}

  .card-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}

  .info-card{
    position:relative;
    display:flex;
    flex-direction:column;
    padding:24px 22px 20px;
    background:var(--panel);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    overflow:hidden;
    transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  }
  .info-card::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:var(--grad);
    opacity:.65;
  }
  .info-card:hover{
    transform:translateY(-4px);
    border-color:rgba(47,230,208,.40);
    box-shadow:var(--shadow-card);
  }
  .card-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;height:42px;
    border-radius:12px;
    background:rgba(47,230,208,.10);
    border:1px solid rgba(47,230,208,.24);
    margin-bottom:16px;
  }
  .card-icon svg{width:20px;height:20px;stroke:var(--teal);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .info-card h3{font-size:18px;line-height:1.5;margin-bottom:10px}
  .info-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;flex:1}
  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:16px;
    font-size:14px;
    font-weight:600;
    color:var(--teal);
    transition:color .2s ease,gap .2s ease;
  }
  .text-link:hover{color:var(--teal-hover);gap:10px}
  .text-link::after{content:"→";font-size:14px}

  /* ---------- Scene ---------- */
  .scene-grid{
    display:grid;
    grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
    gap:48px;
    align-items:center;
  }
  .scene-media{
    position:relative;
    margin:0;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--border);
    box-shadow:0 24px 60px rgba(0,0,0,.42);
  }
  .scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
  .scene-media::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(120deg,rgba(6,9,18,.28),rgba(6,9,18,.02) 60%);
    pointer-events:none;
  }
  .scene-body h2{font-size:clamp(23px,2.8vw,29px);line-height:1.45;margin:16px 0 14px;font-weight:800}
  .scene-body > p{color:var(--text-2);font-size:15.5px}
  .check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
  .check-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2)}
  .check-list li svg{width:18px;height:18px;flex:none;margin-top:5px;stroke:var(--teal);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px}
  details.faq-item{
    background:var(--panel);
    border:1px solid var(--border);
    border-radius:16px;
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    overflow:hidden;
    transition:border-color .25s ease,background .25s ease;
  }
  details.faq-item:hover{border-color:var(--border-strong)}
  details.faq-item[open]{border-color:rgba(47,230,208,.38);background:var(--panel-strong)}
  details.faq-item summary{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 22px 18px 25px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    list-style:none;
  }
  details.faq-item summary::-webkit-details-marker{display:none}
  details.faq-item summary::before{
    content:"";
    position:absolute;
    left:0;top:14px;bottom:14px;
    width:3px;
    border-radius:3px;
    background:var(--grad);
    box-shadow:0 0 12px rgba(47,230,208,.6);
  }
  .faq-icon{
    flex:none;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:26px;height:26px;
    border-radius:50%;
    border:1px solid rgba(47,230,208,.4);
    transition:transform .25s ease,background .25s ease;
  }
  .faq-icon svg{width:12px;height:12px;stroke:var(--teal);stroke-width:2.2;fill:none;stroke-linecap:round}
  details.faq-item[open] .faq-icon{transform:rotate(45deg);background:rgba(47,230,208,.14)}
  .faq-answer{padding:0 22px 20px 25px;color:var(--text-2);font-size:15px;line-height:1.85}

  /* ---------- CTA band ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    padding:52px 0;
    border-top:1px solid rgba(255,255,255,.08);
    border-bottom:1px solid rgba(255,255,255,.08);
    background-image:linear-gradient(120deg,rgba(6,9,18,.94),rgba(11,17,32,.86)),url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
  }
  .cta-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
  }
  .cta-inner h2{font-size:clamp(22px,2.8vw,28px);line-height:1.45;font-weight:800}
  .cta-inner p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:620px}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

  /* ---------- Footer ---------- */
  .site-footer{
    position:relative;
    z-index:2;
    background:rgba(4,7,15,.92);
    border-top:1px solid rgba(255,255,255,.08);
    padding:64px 0 32px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.1fr;
    gap:40px;
  }
  .footer-brand .brand{margin-bottom:16px}
  .footer-brand .brand-text{color:var(--text)}
  .footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;max-width:320px}
  .footer-col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}
  .footer-col a,.footer-col span{
    display:block;
    font-size:14px;
    color:var(--text-3);
    margin-bottom:10px;
    transition:color .2s ease;
  }
  .footer-col a:hover{color:var(--teal)}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    margin-top:48px;
    padding-top:24px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;
    color:var(--text-3);
  }

  /* ---------- Sticky CTA ---------- */
  .sticky-cta{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:70;
    background:rgba(6,9,18,.90);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-top:1px solid rgba(255,255,255,.10);
    transform:translateY(110%);
    opacity:0;
    transition:transform .3s ease,opacity .3s ease;
  }
  .sticky-cta.is-visible{transform:translateY(0);opacity:1}
  .sticky-cta::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:var(--grad);
    opacity:.7;
  }
  .sticky-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:64px;
    font-size:14.5px;
    color:var(--text-2);
  }

  /* ---------- Responsive ---------- */
  @media (max-width:1024px){
    .layout-with-aside{grid-template-columns:minmax(0,1fr);gap:0}
    .anchor-nav{display:none}
    .scene-grid{grid-template-columns:minmax(0,1fr);gap:28px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:-24px}
  }
  @media (max-width:900px){
    .main-nav{display:none}
    .search-box{display:none}
    .nav-toggle{display:inline-flex}
    .header-inner{height:64px}
  }
  @media (max-width:768px){
    body{padding-bottom:84px}
    .section{padding:56px 0}
    .page-banner{padding:52px 0 56px}
    .card-grid-2{grid-template-columns:minmax(0,1fr);gap:16px}
    .group{margin-bottom:52px}
    .banner-sub{font-size:15.5px}
    .cta-band{padding:40px 0}
    .cta-inner{flex-direction:column;align-items:flex-start}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 auto}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .sticky-cta .sticky-inner span{display:none}
    .sticky-inner .btn{width:100%}
    .sticky-inner{padding:12px 0}
  }
  @media (max-width:520px){
    .stat-strip{grid-template-columns:1fr;margin-top:-18px}
    .banner-actions .btn{width:100%}
    .brand-text{font-size:17px}
    .group-head{gap:12px}
    .group-index{width:40px;height:40px;border-radius:12px;font-size:14px}
  }

/* roulang page: category2 */
:root{
  --bg-deep:#060912;
  --bg-mid:#0B1120;
  --panel:rgba(255,255,255,.05);
  --panel-soft:rgba(255,255,255,.035);
  --panel-border:rgba(255,255,255,.10);
  --primary:#2FE6D0;
  --primary-hover:#5BF0DE;
  --primary-ink:#0B7F73;
  --secondary:#7A6BFF;
  --accent:#FFB86B;
  --text:#E6ECF7;
  --text-sub:#A8B4CC;
  --text-mute:#6E7A94;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-btn:12px;
  --glow:0 0 24px rgba(47,230,208,.35);
  --shadow-card:0 12px 40px rgba(47,230,208,.14);
  --container-w:1200px;
  --grad:linear-gradient(120deg,#2FE6D0,#6FA8FF 55%,#7A6BFF);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.02em;
  color:var(--text);
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1.6px 1.6px at 8% 12%, rgba(255,255,255,.55) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 26% 62%, rgba(255,255,255,.38) 50%, transparent 51%),
    radial-gradient(1.8px 1.8px at 47% 24%, rgba(255,255,255,.45) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 63% 78%, rgba(255,255,255,.32) 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 81% 40%, rgba(255,255,255,.42) 50%, transparent 51%),
    radial-gradient(1.3px 1.3px at 92% 84%, rgba(255,255,255,.30) 50%, transparent 51%),
    radial-gradient(circle at 84% 6%, rgba(122,107,255,.20), transparent 42%),
    radial-gradient(circle at 6% 88%, rgba(47,230,208,.14), transparent 38%),
    linear-gradient(135deg,#060912 0%,#0B1120 55%,#0A0F1E 100%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  background-size:cover;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
h1,h2,h3,h4,p,figure{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;}

body .container{width:100%;max-width:var(--container-w);margin:0 auto;padding:0 32px;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#FFFFFF;
  border-bottom:1px solid rgba(10,20,40,.08);
  box-shadow:0 4px 18px rgba(10,20,40,.05);
  transition:background .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;background:rgba(47,230,208,.10);}
.brand-text{font-size:19px;font-weight:700;color:#0B1120;letter-spacing:.02em;transition:color .2s ease;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{position:relative;padding:6px 0;font-size:15px;font-weight:500;color:#33405A;transition:color .2s ease;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.nav-link:hover{color:#0B7F73;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:#0B7F73;font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.search-box{display:flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#F4F6FB;border:1px solid rgba(10,20,40,.08);transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;}
.search-box svg{color:#8A93A6;flex:none;}
.search-box input{width:154px;border:0;background:transparent;outline:none;font-size:14px;color:#0B1120;}
.search-box input::placeholder{color:#8A93A6;}
.search-box:focus-within{border-color:rgba(47,230,208,.75);box-shadow:0 0 0 3px rgba(47,230,208,.16);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--radius-btn);font-weight:600;white-space:nowrap;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-lg{padding:14px 30px;font-size:16px;}
.btn-primary{background:var(--grad);color:#04120F;box-shadow:var(--glow);}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 34px rgba(47,230,208,.55);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 16px rgba(47,230,208,.30);}
.btn-ghost{border:1px solid rgba(47,230,208,.55);color:var(--primary);background:transparent;}
.btn-ghost:hover{background:rgba(47,230,208,.10);transform:translateY(-1px);}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid rgba(10,20,40,.10);align-items:center;justify-content:center;flex-direction:column;gap:4px;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#0B1120;transition:background .2s ease,transform .2s ease;}
.site-header.is-scrolled{background:rgba(6,9,18,.84);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--panel-border);box-shadow:0 14px 40px rgba(0,0,0,.38);}
.site-header.is-scrolled .brand-text{color:var(--text);}
.site-header.is-scrolled .brand-mark{background:rgba(47,230,208,.14);}
.site-header.is-scrolled .nav-link{color:var(--text-sub);}
.site-header.is-scrolled .nav-link:hover,.site-header.is-scrolled .nav-link.active{color:#FFFFFF;}
.site-header.is-scrolled .search-box{background:rgba(255,255,255,.06);border-color:var(--panel-border);}
.site-header.is-scrolled .search-box input{color:var(--text);}
.site-header.is-scrolled .search-box input::placeholder{color:var(--text-mute);}
.site-header.is-scrolled .nav-toggle{border-color:var(--panel-border);}
.site-header.is-scrolled .nav-toggle span{background:var(--text);}

/* ---------- 短标题区 ---------- */
.page-hero{padding:72px 0 56px;position:relative;}
.page-hero-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:48px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-mute);margin-bottom:20px;}
.breadcrumb a{color:var(--text-sub);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--primary);}
.page-title{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:.01em;background:linear-gradient(120deg,#FFFFFF 20%,#8FF3E6 60%,#B9B2FF 100%);-webkit-background-clip:text;background-clip:text;color:transparent;}
.page-sub{margin-top:16px;font-size:20px;font-weight:600;color:var(--primary);}
.page-lead{margin-top:18px;max-width:640px;font-size:16px;color:var(--text-sub);}
.hero-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.point-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;font-size:14px;color:var(--text-sub);background:var(--panel);border:1px solid var(--panel-border);backdrop-filter:blur(14px);transition:border-color .22s ease,color .22s ease,transform .22s ease;}
.point-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(47,230,208,.8);}
.point-chip:hover{border-color:rgba(47,230,208,.45);color:var(--text);transform:translateY(-2px);}
.page-hero-figure{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--panel-border);background:var(--panel);padding:10px;backdrop-filter:blur(14px);box-shadow:0 18px 50px rgba(0,0,0,.35);}
.page-hero-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;}
.page-hero-figure figcaption{margin-top:12px;font-size:13px;color:var(--text-mute);text-align:center;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:56px 0;}
.section-head{max-width:760px;}
.section-tag{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.04em;color:var(--primary);background:rgba(47,230,208,.10);border:1px solid rgba(47,230,208,.30);}
.section-title{margin-top:18px;font-size:30px;line-height:1.4;font-weight:700;color:var(--text);}
.section-desc{margin-top:14px;font-size:16px;color:var(--text-sub);}

/* ---------- 对比表 ---------- */
.compare-wrap{margin-top:44px;border-radius:var(--radius-card);border:1px solid var(--panel-border);background:var(--panel);backdrop-filter:blur(14px);overflow:hidden;}
.compare-table{font-size:15px;}
.compare-table thead th{padding:20px;text-align:left;border-bottom:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.03);font-size:14px;font-weight:600;color:var(--text-sub);}
.compare-table tbody th{padding:18px 20px;text-align:left;width:22%;font-weight:600;color:var(--text);border-bottom:1px solid rgba(255,255,255,.06);}
.compare-table tbody td{padding:18px 20px;color:var(--text-sub);border-bottom:1px solid rgba(255,255,255,.06);}
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr{transition:background .2s ease;}
.compare-table tbody tr:hover{background:rgba(47,230,208,.05);}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;}
.badge-primary{background:rgba(47,230,208,.14);color:#5BF0DE;border:1px solid rgba(47,230,208,.35);}
.badge-purple{background:rgba(122,107,255,.16);color:#BAB3FF;border:1px solid rgba(122,107,255,.42);}
.badge-orange{background:rgba(255,184,107,.14);color:#FFB86B;border:1px solid rgba(255,184,107,.42);}
.table-note{margin-top:18px;font-size:13.5px;color:var(--text-mute);}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:52px;padding-left:0;}
.timeline::before{content:"";position:absolute;left:23px;top:14px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,rgba(47,230,208,.75),rgba(122,107,255,.40),rgba(47,230,208,0));}
.tl-item{position:relative;padding-left:76px;margin-bottom:26px;}
.tl-item:last-child{margin-bottom:0;}
.tl-node{position:absolute;left:8px;top:8px;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#04120F;background:radial-gradient(circle at 32% 28%,#7FF6E8,#2FE6D0 52%,#12A99A 100%);box-shadow:0 0 0 6px rgba(47,230,208,.10),0 0 18px rgba(47,230,208,.45);}
.tl-card{background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);padding:22px 26px;backdrop-filter:blur(14px);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(47,230,208,.40);box-shadow:var(--shadow-card);}
.tl-title{font-size:19px;font-weight:700;color:var(--text);}
.tl-desc{margin-top:10px;font-size:15px;color:var(--text-sub);}
.tl-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px;}
.tl-tip{font-size:13px;color:var(--text-mute);padding:3px 10px;border-radius:999px;border:1px solid var(--panel-border);background:var(--panel-soft);}

/* ---------- 双列清单 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px;}
.check-card{background:var(--panel);border:1px solid var(--panel-border);border-radius:var(--radius-card);padding:30px 30px 24px;backdrop-filter:blur(14px);transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
.check-card:hover{transform:translateY(-4px);border-color:rgba(122,107,255,.42);box-shadow:0 12px 40px rgba(122,107,255,.16);}
.check-head{display:flex;align-items:center;gap:12px;margin-bottom:22px;}
.check-icon{width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(47,230,208,.12);border:1px solid rgba(47,230,208,.30);color:var(--primary);font-size:16px;font-weight:700;}
.check-head h3{font-size:19px;font-weight:700;color:var(--text);}
.check-list li{position:relative;padding-left:28px;margin-bottom:14px;font-size:15px;color:var(--text-sub);}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;background:rgba(47,230,208,.14);border:1px solid rgba(47,230,208,.55);}
.check-list li::after{content:"";position:absolute;left:4px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--primary);}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:920px;margin:44px auto 0;}
.faq-item{position:relative;border-radius:16px;overflow:hidden;background:var(--panel);border:1px solid var(--panel-border);backdrop-filter:blur(14px);transition:border-color .22s ease,box-shadow .22s ease;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,#2FE6D0,#7A6BFF);opacity:.9;}
.faq-item[open]{border-color:rgba(47,230,208,.38);box-shadow:0 10px 34px rgba(47,230,208,.12);}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:20px 58px 20px 28px;font-size:16.5px;font-weight:600;color:var(--text);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--primary);transition:transform .25s ease;display:flex;}
.faq-item[open] .faq-icon{transform:translateY(-50%) rotate(45deg);}
.faq-body{padding:0 58px 22px 28px;font-size:15px;color:var(--text-sub);}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;padding:60px 48px;text-align:center;background:linear-gradient(120deg,rgba(47,230,208,.16),rgba(122,107,255,.22));border:1px solid rgba(255,255,255,.12);}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 16% 20%,rgba(47,230,208,.22),transparent 46%),radial-gradient(circle at 84% 82%,rgba(122,107,255,.24),transparent 48%);pointer-events:none;}
.cta-inner{position:relative;max-width:720px;margin:0 auto;}
.cta-title{font-size:30px;font-weight:700;line-height:1.4;color:#FFFFFF;}
.cta-desc{margin-top:16px;font-size:16px;color:var(--text-sub);}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;padding:64px 0 28px;border-top:1px solid var(--line);background:rgba(6,9,18,.92);}
.footer-grid{display:grid;grid-template-columns:1.9fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand-text{color:var(--text);}
.footer-brand .brand-mark{background:rgba(47,230,208,.12);}
.footer-brand p{margin-top:16px;max-width:330px;font-size:14px;line-height:1.85;color:var(--text-sub);}
.footer-col h3{margin-bottom:16px;font-size:15px;font-weight:700;color:var(--text);}
.footer-col a,.footer-col span{display:block;font-size:14px;line-height:2.1;color:var(--text-mute);transition:color .2s ease;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-mute);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  body .container{padding:0 24px;}
  .page-hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-title{font-size:36px;}
  .section{padding:72px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:1023px){
  .main-nav{position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:flex-start;gap:0;padding:10px 24px 20px;background:#FFFFFF;border-bottom:1px solid rgba(10,20,40,.08);box-shadow:0 18px 40px rgba(10,20,40,.10);}
  .main-nav.is-open{display:flex;}
  .main-nav .nav-link{width:100%;padding:13px 0;border-bottom:1px solid rgba(10,20,40,.06);}
  .main-nav .nav-link::after{display:none;}
  .site-header.is-scrolled .main-nav{background:rgba(11,17,32,.97);border-bottom-color:var(--panel-border);box-shadow:0 18px 40px rgba(0,0,0,.45);}
  .site-header.is-scrolled .main-nav .nav-link{border-bottom-color:rgba(255,255,255,.07);}
  .nav-toggle{display:flex;}
  .search-box{display:none;}
}
@media (max-width:900px){
  .check-grid{grid-template-columns:1fr;}
  .compare-table,.compare-table thead,.compare-table tbody,.compare-table tr,.compare-table th,.compare-table td{display:block;width:100%;}
  .compare-table thead{display:none;}
  .compare-table tbody tr{margin:0 0 16px;padding:6px 18px 14px;border:1px solid var(--panel-border);border-radius:16px;background:var(--panel-soft);}
  .compare-table tbody tr:last-child{margin-bottom:0;}
  .compare-table tbody th{width:100%;padding:16px 0 10px;border-bottom:1px solid rgba(255,255,255,.09);font-size:16px;}
  .compare-table tbody td{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:10px 0;border-bottom:1px dashed rgba(255,255,255,.10);}
  .compare-table tbody tr td:last-child{border-bottom:0;}
  .compare-table tbody td::before{content:attr(data-label);flex:none;font-size:13px;color:var(--text-mute);}
  .compare-table tbody td{text-align:right;}
}
@media (max-width:768px){
  body .container{padding:0 20px;}
  .header-inner{height:64px;}
  .brand-text{font-size:17px;}
  .btn-sm{padding:8px 15px;font-size:13.5px;}
  .page-hero{padding:52px 0 40px;}
  .page-title{font-size:29px;}
  .page-sub{font-size:17px;}
  .page-lead{font-size:15px;}
  .section{padding:56px 0;}
  .section-title{font-size:23px;}
  .section-desc{font-size:15px;}
  .compare-wrap{margin-top:30px;}
  .timeline{margin-top:34px;}
  .timeline::before{left:15px;}
  .tl-item{padding-left:52px;}
  .tl-node{left:0;width:30px;height:30px;font-size:12px;}
  .tl-card{padding:18px 20px;}
  .tl-title{font-size:17px;}
  .check-card{padding:24px 22px 18px;}
  .faq-item summary{padding:17px 50px 17px 22px;font-size:15.5px;}
  .faq-body{padding:0 50px 18px 22px;font-size:14.5px;}
  .cta-band{padding:40px 22px;border-radius:20px;}
  .cta-title{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}