/* roulang page: index */
:root{
  --bg:#0B0817;
  --bg-section:#100C22;
  --bg-card:#181233;
  --bg-elev:#201A3E;
  --bg-input:#14102A;
  --primary:#38E0B0;
  --primary-dim:rgba(56,224,176,.12);
  --accent:#7A5CFF;
  --accent-dim:rgba(122,92,255,.14);
  --warn:#FF7A45;
  --text:#F3F1FF;
  --text-2:#B6B0D4;
  --text-3:#7E7899;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(56,224,176,.35);
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --r-input:12px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter",ui-monospace,"SFMono-Regular",var(--font-cn);
  --sidebar-w:240px;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out;}
img{display:block;max-width:100%;height:auto;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
::selection{background:rgba(56,224,176,.28);color:#fff;}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;min-height:100vh;}
.site-main{
  flex:1 1 auto;
  min-width:0;
  margin-left:var(--sidebar-w);
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 40px;
}
.section{padding:96px 0;scroll-margin-top:32px;border-top:1px solid var(--line);}
.section--alt{background:var(--bg-section);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.7;margin-top:10px;max-width:56ch;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--primary);
  padding:6px 12px;border:1px solid var(--line-hi);border-radius:var(--r-badge);
  background:rgba(56,224,176,.06);
}
.section-head--stack{flex-direction:column;align-items:flex-start;}

/* ---------- 侧边栏 ---------- */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  display:flex;flex-direction:column;gap:22px;
  padding:26px 16px 22px;
  background:var(--bg-section);
  border-right:1px solid var(--line);
  z-index:70;
  overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:6px;}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px;flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  position:relative;
  flex:0 0 36px;width:36px;height:36px;
  border-radius:11px;
  background:linear-gradient(140deg,rgba(56,224,176,.2),rgba(122,92,255,.26));
  border:1px solid var(--line-hi);
  display:grid;place-items:center;
}
.brand-mark svg{width:22px;height:22px;display:block;}
.brand-text{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:-.01em;color:var(--text);}
.side-group-title{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  padding:0 12px;margin-bottom:8px;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:0 12px 0 16px;
  border-radius:12px;
  color:var(--text-2);font-size:15px;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;
  width:3px;height:0;border-radius:3px;background:var(--primary);
  transform:translateY(-50%);
  transition:height .18s ease-out;
}
.nav-link:hover{background:rgba(255,255,255,.045);color:var(--text);}
.nav-link.is-active{background:#1A1533;color:var(--text);font-weight:600;}
.nav-link.is-active::before{height:20px;}
.nav-link--anchor{font-size:14px;min-height:40px;color:var(--text-3);}
.nav-link--anchor.is-current{color:var(--primary);background:rgba(56,224,176,.07);}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.sidebar-contact{
  font-size:13px;color:var(--text-3);line-height:1.6;
  padding:0 12px;
}
.sidebar-contact b{display:block;color:var(--text-2);font-weight:600;font-size:13px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;
  transition:transform .18s ease-out,background .18s ease-out,border-color .18s ease-out,filter .18s ease-out,box-shadow .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#06231A;}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,176,.35),0 10px 26px rgba(0,0,0,.4);}
.btn-ghost{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn-ghost:hover{background:var(--primary-dim);transform:translateY(-2px);}
.btn-quiet{border-color:var(--line);color:var(--text-2);background:rgba(255,255,255,.03);}
.btn-quiet:hover{border-color:var(--line-hi);color:var(--text);transform:translateY(-2px);}
.btn-block{width:100%;}
.btn-capsule{border-radius:999px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none;}
.btn.is-loading{pointer-events:none;opacity:.75;}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(6,35,26,.35);border-top-color:#06231A;
  animation:spin 1.4s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- 移动端顶部栏与抽屉 ---------- */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:80;
  align-items:center;justify-content:space-between;
  gap:12px;padding:10px 16px;
  background:rgba(16,12,34,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.burger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);display:grid;place-items:center;gap:4px;
  padding:12px;
}
.burger span{display:block;width:100%;height:2px;border-radius:2px;background:var(--text-2);transition:background .18s ease-out;}
.burger:hover span{background:var(--primary);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,4,14,.66);
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s;
  z-index:88;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);
  background:var(--bg-section);border-left:1px solid var(--line);
  padding:22px 18px 32px;
  transform:translateX(102%);
  transition:transform .26s ease-out;
  z-index:90;
  overflow-y:auto;
  display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-2);font-size:20px;line-height:1;
}
.drawer-close:hover{color:var(--primary);border-color:var(--line-hi);}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:6px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:88px 0 72px;
  border-top:0;
}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 78% 24%, rgba(122,92,255,.24), transparent 44%),
    radial-gradient(circle at 16% 84%, rgba(56,224,176,.16), transparent 46%),
    linear-gradient(180deg, rgba(11,8,23,.42), rgba(11,8,23,.94)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px, transparent 1px);
  background-size:36px 36px;
  opacity:.22;
}
.hero-bg::before{
  content:"";position:absolute;right:-160px;top:-220px;
  width:640px;height:640px;border-radius:50%;
  border:1px solid rgba(56,224,176,.18);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.06fr .94fr;
  gap:56px;align-items:center;
}
.hero h1{
  font-size:clamp(34px,5vw,56px);
  line-height:1.15;font-weight:700;letter-spacing:-.02em;
  margin:20px 0 16px;
}
.hero-sub{font-size:17px;color:var(--text-2);line-height:1.75;max-width:34ch;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:34px;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats li{min-width:88px;}
.hero-stats strong{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:26px;line-height:1.2;color:var(--primary);
}
.hero-stats strong i{font-style:normal;font-size:14px;color:var(--text-2);margin-left:2px;}
.hero-stats span{font-size:13px;color:var(--text-3);}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  box-shadow:var(--shadow-hover);
}
.hero-figure::after{
  content:"";position:absolute;left:-18px;bottom:-18px;width:120px;height:120px;
  border-radius:20px;border:1px solid rgba(122,92,255,.32);
  z-index:-1;
}

/* ---------- 数据条 ---------- */
.proof{padding:0;border-top:1px solid var(--line);}
.proof-inner{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-left:1px solid var(--line);
}
.proof-item{
  padding:32px 24px;
  border-right:1px solid var(--line);
}
.proof-item strong{
  display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:30px;line-height:1.2;color:var(--text);
}
.proof-item strong em{font-style:normal;font-size:15px;color:var(--text-3);margin-left:4px;}
.proof-item span{display:block;margin-top:6px;font-size:14px;color:var(--text-2);}

/* ---------- 卖点 ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:24px;
}
.card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
a.card:hover,.card--click:hover{
  transform:translateY(-2px);
  border-color:var(--line-hi);
  box-shadow:var(--shadow-card);
}
.feature-main{display:flex;flex-direction:column;gap:16px;}
.feature-no{
  display:inline-grid;place-items:center;
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(122,92,255,.45);
  color:var(--accent);font-family:var(--font-num);font-size:14px;font-weight:700;
  background:var(--accent-dim);
}
.feature-main h3{font-size:22px;line-height:1.4;font-weight:600;}
.feature-main p{color:var(--text-2);font-size:15px;line-height:1.85;}
.feature-main img{
  margin-top:auto;width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.feature-sm{display:flex;flex-direction:column;gap:12px;}
.feature-sm h3{font-size:19px;line-height:1.4;font-weight:600;}
.feature-sm p{color:var(--text-2);font-size:15px;line-height:1.8;}
.feature-list{margin-top:auto;display:flex;flex-direction:column;gap:8px;}
.feature-list li{
  position:relative;padding-left:18px;
  font-size:14px;color:var(--text-2);line-height:1.7;
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}

/* ---------- 演示 ---------- */
.zebra{display:grid;gap:56px;}
.zebra-row{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.zebra-row--flip .zebra-media{order:2;}
.zebra-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
}
.zebra-copy h3{font-size:22px;line-height:1.4;font-weight:600;margin:14px 0 12px;}
.zebra-copy p{color:var(--text-2);font-size:15px;line-height:1.85;}
.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.point-list li{
  position:relative;padding-left:20px;
  font-size:15px;color:var(--text-2);line-height:1.75;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--primary);
}

/* ---------- 证据卡带 ---------- */
.evidence-head{display:flex;align-items:center;gap:12px;}
.carousel-ctrl{display:flex;gap:8px;}
.carousel-btn{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text-2);
  display:grid;place-items:center;font-size:16px;line-height:1;
  transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.carousel-btn:hover{border-color:var(--line-hi);color:var(--primary);background:var(--primary-dim);}
.carousel{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 0 12px;
  scrollbar-width:none;
}
.carousel::-webkit-scrollbar{display:none;}
.quote-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  display:flex;flex-direction:column;gap:16px;
}
.quote-card p{font-size:15px;line-height:1.85;color:var(--text);}
.quote-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;}
.quote-meta strong{font-size:14px;color:var(--text-2);font-weight:600;}
.quote-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);}

/* ---------- 资讯列表 ---------- */
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:15px;font-weight:600;
  border-bottom:1px solid rgba(56,224,176,.4);
  padding-bottom:2px;
}
.text-link:hover{color:#6BF0C7;border-bottom-color:#6BF0C7;}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-hi);box-shadow:var(--shadow-card);}
.news-card img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);
}
.news-card h3{
  font-size:18px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  color:var(--text-2);font-size:15px;line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
}
.news-foot time{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:var(--r-badge);
  background:var(--accent-dim);color:#B7A6FF;
  font-size:12px;letter-spacing:.06em;line-height:1.5;white-space:nowrap;
}
.empty-state{
  grid-column:1/-1;
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:56px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);
  color:var(--text-2);font-size:15px;text-align:center;
}
.empty-state svg{width:40px;height:40px;color:var(--text-3);}
.skeleton-wrap{grid-column:1/-1;display:flex;flex-direction:column;gap:12px;}
.skeleton{
  height:14px;border-radius:8px;
  background:linear-gradient(90deg,rgba(255,255,255,.05),rgba(255,255,255,.13),rgba(255,255,255,.05));
  background-size:220% 100%;
  animation:shimmer 1.6s ease-in-out infinite;
}
@keyframes shimmer{0%{background-position:120% 0;}100%{background-position:-120% 0;}}

/* ---------- 价格 ---------- */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;}
.plan{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 24px;
  display:flex;flex-direction:column;gap:18px;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.plan:hover{transform:translateY(-2px);border-color:var(--line-hi);box-shadow:var(--shadow-card);}
.plan--featured{transform:translateY(-8px);border-color:rgba(255,122,69,.5);box-shadow:var(--shadow-card);}
.plan--featured:hover{transform:translateY(-10px);}
.plan-tag{
  position:absolute;top:-12px;left:24px;
  padding:3px 10px;border-radius:var(--r-badge);
  background:var(--warn);color:#3A1607;
  font-size:12px;font-weight:700;letter-spacing:.06em;
}
.plan h3{font-size:19px;font-weight:600;}
.plan-price{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:38px;line-height:1.1;color:var(--text);
}
.plan-price small{font-size:14px;color:var(--text-3);margin-left:6px;font-family:var(--font-cn);}
.plan-desc{font-size:14px;color:var(--text-2);line-height:1.75;}
.plan-list{display:flex;flex-direction:column;gap:10px;padding-top:4px;border-top:1px solid var(--line);}
.plan-list li{position:relative;padding-left:24px;font-size:14px;line-height:1.75;color:var(--text-2);}
.plan-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:12px;height:7px;border-left:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(-45deg);border-radius:1px;
}
.plan-list li.is-off{color:var(--text-3);}
.plan-list li.is-off::before{
  width:12px;height:0;border:0;border-top:2px solid var(--text-3);
  transform:none;top:14px;
}
.plan .btn{margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 4px;
  text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--primary);}
.faq-arrow{
  flex:0 0 22px;width:22px;height:22px;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg) scale(.62);
  transition:transform .22s ease-out,border-color .18s ease-out;
  margin-right:6px;
}
.faq-q[aria-expanded="true"]{color:var(--primary);}
.faq-q[aria-expanded="true"] .faq-arrow{transform:rotate(-135deg) scale(.62);border-color:var(--primary);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-a p{
  padding:0 4px 22px;color:var(--text-2);font-size:15px;line-height:1.9;max-width:80ch;
}

/* ---------- 联系表单 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start;}
.contact-info{display:flex;flex-direction:column;gap:18px;}
.contact-info h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;font-weight:700;}
.contact-info p{color:var(--text-2);font-size:15px;line-height:1.85;}
.contact-meta{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.contact-meta li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--text-2);line-height:1.75;
}
.contact-meta b{color:var(--text);font-weight:600;min-width:64px;}
.form-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  display:grid;gap:18px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;color:var(--text-2);font-weight:600;}
.field input,.field textarea,.field select{
  width:100%;
  background:var(--bg-input);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  padding:12px 14px;
  font-size:15px;line-height:1.6;color:var(--text);
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{min-height:112px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(56,224,176,.22);
}
.field.has-error input,.field.has-error textarea{border-color:var(--warn);}
.field-error{font-size:13px;color:var(--warn);line-height:1.6;display:none;}
.field.has-error .field-error{display:block;}
.form-note{font-size:13px;color:var(--text-3);line-height:1.7;}
.form-status{
  font-size:14px;color:var(--primary);line-height:1.7;
  display:none;
}
.form-status.is-visible{display:block;}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line-hi);
  background:rgba(56,224,176,.08);
  padding:48px 40px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size:30px 30px;opacity:.2;pointer-events:none;
}
.cta-band h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:700;max-width:22ch;}
.cta-band p{color:var(--text-2);font-size:15px;line-height:1.8;margin-top:10px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  padding:72px 0 96px;
  background:var(--bg-section);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px);
  background-size:38px 38px;opacity:.2;pointer-events:none;
}
.footer-inner{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.85;margin-top:16px;max-width:34ch;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.04em;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col li{font-size:14px;color:var(--text-2);line-height:1.7;}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:60;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:999px;
  background:var(--primary);color:#06231A;font-weight:700;font-size:15px;
  box-shadow:0 12px 30px rgba(0,0,0,.45);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s,filter .18s ease-out;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,176,.4),0 16px 40px rgba(0,0,0,.45);}
.float-cta svg{width:16px;height:16px;}
.mobile-cta{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:88px;}
  .sidebar{padding:20px 10px;align-items:center;gap:18px;}
  .brand{padding:4px;justify-content:center;}
  .brand-text{display:none;}
  .side-group-title{display:none;}
  .side-nav{width:100%;align-items:center;}
  .nav-link{
    justify-content:center;padding:0;width:48px;font-size:0;
    min-height:48px;
  }
  .nav-link::after{
    content:attr(data-char);
    font-size:15px;font-weight:600;line-height:1;
  }
  .nav-link.is-active::after{color:var(--primary);}
  .sidebar-foot{align-items:center;width:100%;}
  .sidebar-foot .btn{width:48px;padding:0;height:48px;font-size:0;}
  .sidebar-foot .btn::after{content:"问";font-size:15px;font-weight:700;}
  .sidebar-contact{display:none;}
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .mobile-bar{display:flex;}
  .sidebar{display:none;}
  .site-main{margin-left:0;}
  .hero{padding:56px 0 52px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-figure{order:-1;}
  .hero-figure img{aspect-ratio:16/10;}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .proof-inner{grid-template-columns:repeat(2,1fr);}
  .proof-item:nth-child(2){border-right:1px solid var(--line);}
  .proof-item:nth-child(1),.proof-item:nth-child(2){border-bottom:1px solid var(--line);}
  .feature-grid{grid-template-columns:1fr;}
  .zebra{gap:40px;}
  .zebra-row{grid-template-columns:1fr;gap:24px;}
  .zebra-row--flip .zebra-media{order:0;}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:36px 28px;}
  .site-footer{padding:56px 0 88px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  .pricing-grid{grid-template-columns:1fr;gap:20px;}
  .plan--featured{transform:none;}
  .plan--featured:hover{transform:translateY(-2px);}
  .cta-band{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .news-grid{grid-template-columns:1fr;}
  .proof-inner{grid-template-columns:1fr;}
  .proof-item{border-right:1px solid var(--line);border-bottom:1px solid var(--line);}
  .proof-item:last-child{border-bottom:0;}
  .hero-stats{gap:24px;}
  .hero-stats strong{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta{display:none;}
  .mobile-cta{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
    gap:10px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(16,12,34,.96);
    backdrop-filter:blur(10px);
    border-top:1px solid var(--line);
  }
  .mobile-cta .btn{flex:1;padding:12px 8px;font-size:14px;}
  .site-footer{padding-bottom:112px;}
  .drawer{width:100%;max-width:100vw;}
}

/* roulang page: article */
:root{
  --brand:#38E0B0;
  --brand-2:#7A5CFF;
  --accent:#FF7A45;
  --bg:#0B0817;
  --bg-section:#100C22;
  --card:#181233;
  --elev:#201A3E;
  --line:rgba(255,255,255,.08);
  --line-glow:rgba(56,224,176,.35);
  --text:#F3F1FF;
  --text-2:#B6B0D4;
  --text-3:#7E7899;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --sidebar:240px;
  --topbar:64px;
  --max:1240px;
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Source Han Sans SC","Noto Sans SC",-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"Space Grotesk","Inter","Helvetica Neue",ui-monospace,monospace;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .18s ease,background .18s ease,border-color .18s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--text)}
p{margin:0 0 20px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 40px}

/* ============ 布局骨架 ============ */
.layout{display:flex;min-height:100vh;background:var(--bg)}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  display:flex;flex-direction:column;gap:26px;
  padding:26px 16px;background:#0E0A1E;
  border-right:1px solid var(--line);
  overflow-y:auto;z-index:60;transition:width .2s ease;
}
.page{flex:1;min-width:0;margin-left:var(--sidebar);display:flex;flex-direction:column}

/* ============ 品牌 ============ */
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);min-height:44px}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;
  border-radius:10px;background:rgba(56,224,176,.10);border:1px solid var(--line-glow);
  transition:transform .18s ease;
}
.brand-mark svg{width:18px;height:18px}
.brand:hover .brand-mark{transform:rotate(-8deg)}
.brand-text{font-size:15px;letter-spacing:.02em;white-space:nowrap;overflow:hidden}

/* ============ 侧栏导航 ============ */
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-group-title{
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  margin:0 0 8px;padding-left:12px;white-space:nowrap;
}
.nav-link{
  position:relative;display:flex;align-items:center;min-height:44px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:rgba(255,255,255,.045);color:var(--text)}
.nav-link.is-active{background:#1A1533;color:var(--text)}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.side-footer{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:20px;border-top:1px solid var(--line)}
.side-footer .btn{width:100%}
.side-contact{font-size:13px;line-height:1.7;color:var(--text-3)}
.side-contact a{color:var(--text-2)}
.side-contact a:hover{color:var(--brand)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,filter .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#06110E}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,176,.35)}
.btn-ghost{border-color:var(--line-glow);color:var(--text);background:transparent}
.btn-ghost:hover{background:rgba(56,224,176,.12);transform:translateY(-2px)}
.btn-soft{background:rgba(122,92,255,.16);color:#CDBFFF;border-color:rgba(122,92,255,.32)}
.btn-soft:hover{background:rgba(122,92,255,.26);transform:translateY(-2px)}
.btn-pill{border-radius:999px}
.btn-sm{padding:9px 16px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none}
.btn.is-loading{opacity:.75;cursor:progress}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(6,17,14,.35);border-top-color:#06110E;
  animation:spin 1.4s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;letter-spacing:.06em;
  padding:6px 10px;border-radius:6px;
  background:rgba(122,92,255,.14);color:#C4B4FF;border:1px solid rgba(122,92,255,.26);
}
.badge-brand{background:rgba(56,224,176,.12);color:var(--brand);border-color:rgba(56,224,176,.28)}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);margin-bottom:26px;
}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .current{color:var(--text-2);max-width:62%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头 ============ */
.article-main{padding:56px 0 0}
.article-header{max-width:960px;padding-bottom:30px;border-bottom:1px solid var(--line);margin-bottom:0}
.article-header h1{
  font-size:clamp(26px,3.4vw,40px);line-height:1.3;letter-spacing:-0.02em;
  margin-bottom:18px;overflow-wrap:anywhere;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2)}

/* ============ 正文 + 目录 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,780px) 240px;
  gap:64px;align-items:start;margin-top:40px;
}
.article-col{min-width:0}

.article-body{font-size:16px;line-height:1.9;color:var(--text-2);overflow-wrap:anywhere}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  position:relative;padding-left:16px;margin:48px 0 16px;
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;color:var(--text);
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{margin:34px 0 12px;font-size:20px;line-height:1.4;color:var(--text);scroll-margin-top:96px}
.article-body h4{margin:24px 0 10px;font-size:17px;color:var(--text)}
.article-body p{margin:0 0 20px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body ul{list-style:none}
.article-body ul li{position:relative;padding-left:16px;margin-bottom:8px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  border-radius:2px;background:var(--brand);
}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:8px;padding-left:4px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(56,224,176,.35)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body strong{color:var(--text)}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:#14102A;
  border-left:3px solid var(--brand-2);border-radius:0 12px 12px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:22px 0;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.article-body code{
  font-family:var(--font-num);font-size:14px;background:#14102A;
  padding:2px 6px;border-radius:6px;color:var(--brand);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;border-radius:12px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;
}
.article-body th{background:var(--card);color:var(--text);font-weight:600}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.02)}

.toc{
  position:sticky;top:40px;padding:20px;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
}
.toc h2{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:12px;font-weight:600}
.toc ol{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto}
.toc a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;line-height:1.5;
  color:var(--text-2);border-left:2px solid transparent;
}
.toc a:hover{background:rgba(255,255,255,.045);color:var(--text)}
.toc a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(56,224,176,.08)}
.toc-toggle{
  display:none;width:100%;align-items:center;justify-content:space-between;
  min-height:48px;padding:12px 16px;margin-bottom:20px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  font-size:15px;font-weight:600;color:var(--text);
}
.toc-toggle span{color:var(--text-3);font-size:13px}

/* ============ 空态 ============ */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  padding:64px 24px;text-align:center;color:var(--text-2);
  background:var(--card);border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-card);
}
.empty-state svg{width:40px;height:40px}
.empty-state p{margin:0;font-size:16px}

/* ============ 文末 ============ */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.article-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.related{margin-top:56px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2.2vw,26px)}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--text-3)}
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.related-card{
  display:flex;gap:16px;padding:20px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--line-glow);box-shadow:var(--shadow-hover)}
.related-thumb{
  width:96px;height:96px;flex:0 0 96px;border-radius:12px;overflow:hidden;
  background:#14102A;border:1px solid var(--line);
}
.related-thumb img{width:100%;height:100%}
.related-card h3{
  font-size:16px;line-height:1.5;margin:8px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card p{
  font-size:14px;color:var(--text-3);margin:0 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.related-card time{font-size:13px;color:var(--text-3);font-family:var(--font-num)}

/* ============ 顶部导航（移动） ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar);
  align-items:center;justify-content:space-between;gap:16px;
  padding:0 18px;background:rgba(11,8,23,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:70;
}
.topbar .brand-text{font-size:14.5px}
.topbar-actions{display:flex;align-items:center;gap:6px}
.menu-btn{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.menu-btn:hover{border-color:var(--line-glow);background:rgba(56,224,176,.10)}
.menu-btn svg{width:20px;height:20px}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(6,4,14,.68);
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#0E0A1E;border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:20px;padding:24px 20px;
  overflow-y:auto;z-index:90;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.drawer-close:hover{border-color:var(--line-glow)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer .side-group-title{padding-left:10px}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}

/* ============ CTA 条 ============ */
.cta-strip{
  position:relative;overflow:hidden;margin-top:96px;
  padding:56px 0;background:rgba(56,224,176,.08);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-strip::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.25;
  background-image:radial-gradient(rgba(243,241,255,.5) 1px,transparent 1px);
  background-size:34px 34px;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35}
.cta-inner p{margin:8px 0 0;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:75;
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 24px;border-radius:999px;
  background:var(--brand);color:#06110E;font-weight:700;font-size:15px;
  box-shadow:var(--shadow-hover);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,filter .18s ease,box-shadow .18s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(56,224,176,.45),0 16px 40px rgba(0,0,0,.45)}
.float-cta svg{width:16px;height:16px}
.mobile-cta-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:75;
  gap:10px;padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(11,8,23,.96);border-top:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.mobile-cta-bar .btn{flex:1}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;margin-top:0;
  background:#0A0716;border-top:1px solid var(--line);
  padding:72px 0 0;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.2;
  background-image:radial-gradient(rgba(243,241,255,.45) 1px,transparent 1px);
  background-size:40px 40px;
}
.footer-inner{position:relative;z-index:1}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:48px;padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;margin:0}
.footer-col h4{font-size:14px;letter-spacing:.04em;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col a{color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  padding:24px 0 96px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar:88px}
  .sidebar{padding:24px 12px;align-items:center}
  .sidebar:hover{width:240px;align-items:stretch;padding:24px 16px;box-shadow:var(--shadow-hover)}
  .brand{justify-content:center}
  .brand-text{display:none}
  .sidebar:hover .brand-text{display:inline}
  .side-group-title{display:none}
  .sidebar:hover .side-group-title{display:block}
  .nav-link{font-size:0;justify-content:center;padding:10px 8px}
  .nav-link::before{content:attr(data-char);font-size:14px;letter-spacing:.02em}
  .sidebar:hover .nav-link{font-size:14.5px;justify-content:flex-start;padding:10px 12px}
  .sidebar:hover .nav-link::before{content:none}
  .side-footer .btn{font-size:0;padding:12px 8px}
  .side-footer .btn::before{content:"咨询";font-size:14px}
  .sidebar:hover .side-footer .btn{font-size:15px}
  .sidebar:hover .side-footer .btn::before{content:none}
  .side-contact{display:none}
  .sidebar:hover .side-contact{display:block}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .page{margin-left:0;padding-top:var(--topbar)}
  .article-main{padding:32px 0 0}
  .container{padding:0 20px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;margin-top:28px}
  .toc{position:static;padding:0;background:transparent;border:0;border-radius:0;margin-bottom:8px}
  .toc-toggle{display:flex}
  .toc ol{display:none;padding:16px;background:var(--card);border:1px solid var(--line);border-radius:14px}
  .toc.is-open ol{display:flex}
  .toc h2{display:none}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .float-cta{display:none}
  .mobile-cta-bar{display:flex}
  .page{padding-bottom:76px}
  .cta-strip{margin-top:64px;padding:48px 0}
  .footer-bottom{padding-bottom:110px}
}
@media (max-width:767px){
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related-thumb{width:80px;height:80px;flex:0 0 80px}
  .article-header h1{font-size:clamp(22px,5.6vw,28px)}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .topbar-actions .nav-link{display:none}
  .article-meta{gap:10px;font-size:13px}
  .article-body{font-size:15px}
  .related-card{flex-direction:column}
  .related-thumb{width:100%;height:160px;flex:0 0 160px}
  .cta-actions .btn{width:100%;flex:none}
}

/* roulang page: category1 */
:root{
  --primary:#38E0B0;
  --secondary:#7A5CFF;
  --accent:#FF7A45;
  --bg:#0B0817;
  --bg-section:#100C22;
  --bg-card:#181233;
  --bg-float:#201A3E;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(56,224,176,.35);
  --text:#F3F1FF;
  --text-soft:#B6B0D4;
  --text-weak:#7E7899;
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-float:0 16px 40px rgba(0,0,0,.45);
  --ring:0 0 0 1px rgba(56,224,176,.25);
  --sidebar:240px;
  --font-cn:"HarmonyOS Sans SC","MiSans","PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::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:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--primary);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;border:0;background:none;color:inherit;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(56,224,176,.3);color:#fff;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 布局 ============ */
.layout{display:block;}
main{margin-left:var(--sidebar);min-height:100vh;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px;}
section{scroll-margin-top:20px;}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:var(--bg-section);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 16px 20px;
  z-index:80;
  transition:width .22s ease;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:rgba(56,224,176,.1);
  box-shadow:var(--ring);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:.01em;color:var(--text);}
.side-group-title{
  margin:26px 12px 10px;font-size:12px;letter-spacing:.14em;
  color:var(--text-weak);
}
.side-nav nav{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;display:flex;align-items:center;
  min-height:44px;padding:0 12px 0 15px;
  border-left:3px solid transparent;
  border-radius:0 10px 10px 0;
  font-size:14.5px;color:var(--text-soft);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;overflow:hidden;
}
.nav-link:hover{background:rgba(255,255,255,.04);color:var(--text);}
.nav-link.is-active{
  background:#1A1533;color:var(--text);
  border-left-color:var(--primary);
  font-weight:600;
}
.side-nav .side-cta{margin-top:auto;padding-top:18px;display:flex;flex-direction:column;gap:10px;}
.side-note{font-size:12px;line-height:1.7;color:var(--text-weak);margin-top:14px;padding:0 8px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;line-height:1;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,filter .18s ease,opacity .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#07160F;}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);color:#07160F;}
.btn-ghost{
  background:transparent;color:var(--primary);
  border:1px solid var(--line-strong);
}
.btn-ghost:hover{background:rgba(56,224,176,.12);transform:translateY(-2px);color:var(--primary);}
.btn-block{width:100%;}
.btn-pill{border-radius:999px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;color:var(--primary);
  border-bottom:1px solid rgba(56,224,176,.45);
  padding-bottom:2px;
}
.btn-text:hover{gap:10px;color:var(--primary);}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:90;
  background:rgba(11,8,23,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  padding:10px 16px;
  align-items:center;justify-content:space-between;gap:12px;
}
.topbar .brand-text{font-size:14px;}
.burger{
  width:44px;height:44px;display:grid;place-items:center;
  border-radius:12px;border:1px solid var(--line);
  background:var(--bg-card);
}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--bg-float);
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .26s ease;
  z-index:120;
  padding:22px 20px calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;
  display:flex;flex-direction:column;gap:14px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:18px;color:var(--text-soft);
}
.drawer .nav-link{
  border-left:0;border-radius:12px;background:rgba(255,255,255,.03);
  min-height:48px;
}
.drawer .nav-link.is-active{background:#1A1533;border-left:3px solid var(--primary);}
.overlay{
  position:fixed;inset:0;background:rgba(5,3,12,.6);
  opacity:0;pointer-events:none;transition:opacity .24s ease;z-index:110;
}
.overlay.is-open{opacity:1;pointer-events:auto;}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  min-height:320px;
  display:flex;align-items:center;
  padding:64px 0 56px;
  background:#0E0A1D;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.4;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 300px at 85% 10%,rgba(122,92,255,.28),transparent 70%),
    linear-gradient(180deg,rgba(11,8,23,.72) 0%,rgba(11,8,23,.92) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;width:100%;}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-weak);margin-bottom:18px;
}
.crumbs a{color:var(--text-soft);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.2);}
.crumbs .current{color:var(--text-soft);}
.page-hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.18;letter-spacing:-.02em;font-weight:700;
  max-width:900px;
}
.page-hero .hero-sub{
  margin-top:16px;font-size:16.5px;color:var(--text-soft);max-width:660px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero-meta div{min-width:104px;}
.hero-meta .m-num{font-size:24px;font-weight:700;color:var(--primary);letter-spacing:-.01em;}
.hero-meta .m-label{font-size:13px;color:var(--text-weak);margin-top:2px;}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-section);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:14px;color:var(--text-soft);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--secondary);
  margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{
  content:"";width:18px;height:1px;background:var(--secondary);opacity:.8;
}

/* ============ 覆盖范围卡 ============ */
.scope-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.scope-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  transition:transform .18s ease,border-color .18s ease;
}
.scope-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.scope-num{
  width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  border:1px solid rgba(122,92,255,.45);
  color:var(--secondary);font-size:13px;font-weight:700;
  margin-bottom:18px;
}
.scope-card h3{font-size:19px;font-weight:600;line-height:1.4;}
.scope-card p{margin-top:10px;font-size:14.5px;color:var(--text-soft);line-height:1.8;}

/* ============ 资讯条目（左图右文长列表） ============ */
.entry-list{
  border-top:1px solid var(--line);
}
.entry-row{
  display:grid;
  grid-template-columns:200px 1fr auto;
  gap:24px;align-items:center;
  padding:22px 16px;
  border-bottom:1px solid var(--line);
  transition:background .18s ease;
}
.entry-row:hover{background:var(--bg-card);}
.entry-thumb{
  width:200px;aspect-ratio:4/3;overflow:hidden;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  background:#14102A;
}
.entry-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.entry-row:hover .entry-thumb img{transform:scale(1.03);}
.entry-body h3{
  font-size:19px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-body p{
  margin-top:8px;font-size:14.5px;color:var(--text-soft);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-meta{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;
  font-size:12px;line-height:1;letter-spacing:.06em;
  padding:6px 10px;border-radius:var(--radius-badge);
  background:rgba(122,92,255,.14);color:#B9A6FF;
  white-space:nowrap;
}
.badge-mint{background:rgba(56,224,176,.13);color:var(--primary);}
.badge-warm{background:rgba(255,122,69,.16);color:#FFB08E;}
.entry-time{font-size:13px;color:var(--text-weak);}
.entry-go{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);color:var(--text-soft);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.entry-row:hover .entry-go{border-color:var(--line-strong);color:var(--primary);transform:translateX(3px);}
.list-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px;}

/* ============ 使用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-card);
  transition:transform .18s ease,border-color .18s ease;
}
.scene-card:hover{transform:translateY(-2px);border-color:var(--line-strong);}
.scene-card h3{font-size:19px;font-weight:600;}
.scene-card p{margin-top:12px;font-size:14.5px;color:var(--text-soft);}
.scene-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.scene-list li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--text-soft);
}
.scene-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}

/* ============ 更新流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;}
.flow-step{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;
}
.flow-step .step-idx{
  font-size:13px;font-weight:700;color:var(--primary);
  letter-spacing:.1em;
}
.flow-step h3{margin-top:14px;font-size:18px;font-weight:600;}
.flow-step p{margin-top:10px;font-size:14.5px;color:var(--text-soft);}
.flow-note{
  margin-top:28px;padding:18px 22px;
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  font-size:14.5px;color:var(--text-soft);
  background:rgba(56,224,176,.05);
}

/* ============ 表单 ============ */
.subscribe{
  display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:start;
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;color:var(--text-soft);margin-bottom:8px;}
.field input{
  width:100%;height:46px;padding:0 14px;
  background:#14102A;border:1px solid var(--line);
  border-radius:var(--radius-btn);color:var(--text);font-size:14.5px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--text-weak);}
.field input:focus{
  outline:none;border-color:var(--primary);
  box-shadow:0 0 0 2px rgba(56,224,176,.22);
}
.field.has-error input{border-color:var(--accent);}
.field-error{display:none;margin-top:8px;font-size:13px;color:#FFB08E;}
.field.has-error .field-error{display:block;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary);}
.faq-arrow{
  flex:0 0 22px;width:22px;height:22px;
  display:grid;place-items:center;
  color:var(--primary);
  transition:transform .24s ease;
}
.faq-item.is-open .faq-arrow{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 4px 22px;font-size:15px;color:var(--text-soft);line-height:1.9;
  max-width:820px;
}

/* ============ 相关分类 ============ */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.link-card{
  display:block;background:var(--bg-card);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform .18s ease,border-color .18s ease;
}
.link-card:hover{transform:translateY(-2px);border-color:var(--line-strong);color:inherit;}
.link-card h3{font-size:18px;font-weight:600;}
.link-card p{margin-top:10px;font-size:14px;color:var(--text-soft);}
.link-card .lc-more{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:16px;font-size:13.5px;color:var(--primary);
}

/* ============ CTA 条 ============ */
.cta-strip{
  position:relative;overflow:hidden;
  background:rgba(56,224,176,.08);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
}
.cta-strip::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px),
    radial-gradient(rgba(56,224,176,.14) 1px,transparent 1px);
  background-size:26px 26px,44px 44px;
  background-position:0 0,12px 14px;
  opacity:.5;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
.cta-inner p{margin-top:10px;font-size:15px;color:var(--text-soft);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-section);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    radial-gradient(rgba(255,255,255,.12) 1px,transparent 1px),
    radial-gradient(rgba(122,92,255,.14) 1px,transparent 1px);
  background-size:34px 34px,60px 60px;
  background-position:0 0,18px 22px;
  opacity:.2;
}
.footer-inner{position:relative;z-index:2;padding-bottom:calc(96px + env(safe-area-inset-bottom));}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand p{
  margin-top:18px;font-size:14px;color:var(--text-soft);max-width:360px;line-height:1.85;
}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li,.footer-col a{font-size:14px;color:var(--text-soft);}
.footer-bottom{
  margin-top:56px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px 28px;
  font-size:13px;color:var(--text-weak);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:100;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 22px;border-radius:999px;
  background:var(--primary);color:#07160F;font-weight:600;font-size:14.5px;
  box-shadow:var(--shadow-float);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,filter .18s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:var(--shadow-float),var(--ring);color:#07160F;}
.float-cta svg{width:16px;height:16px;}
.mobile-bar{display:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar:88px;}
  .side-nav{padding:22px 12px 18px;overflow:hidden;}
  .side-nav:hover{width:240px;box-shadow:var(--shadow-float);}
  .brand-text{display:none;}
  .side-nav:hover .brand-text{display:block;}
  .side-group-title{font-size:0;margin:22px 0 10px;}
  .side-group-title::after{
    content:"菜单";font-size:11px;letter-spacing:.14em;color:var(--text-weak);
  }
  .side-nav:hover .side-group-title{font-size:12px;}
  .side-nav:hover .side-group-title::after{content:"";}
  .nav-link{font-size:0;padding:0;justify-content:center;border-left:0;border-radius:12px;}
  .nav-link::before{
    content:attr(data-char);
    font-size:14px;letter-spacing:0;color:inherit;
  }
  .side-nav:hover .nav-link{font-size:14.5px;justify-content:flex-start;padding:0 12px 0 15px;border-left:3px solid transparent;border-radius:0 10px 10px 0;}
  .side-nav:hover .nav-link::before{display:none;}
  .side-nav:hover .nav-link.is-active{border-left-color:var(--primary);}
  .side-cta .btn{font-size:0;padding:0;width:44px;justify-content:center;}
  .side-cta .btn::after{content:"→";font-size:16px;}
  .side-nav:hover .side-cta .btn{font-size:14.5px;width:100%;padding:0 20px;}
  .side-nav:hover .side-cta .btn::after{content:"";}
  .side-note{display:none;}
  .scope-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
  .link-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .subscribe{grid-template-columns:1fr;gap:32px;}
  .scene-grid{grid-template-columns:1fr;}
}
@media (max-width:1023px){
  :root{--sidebar:0px;}
  .side-nav{display:none;}
  .topbar{display:flex;}
  main{margin-left:0;}
  .section{padding:64px 0;}
  .container{padding:0 20px;}
  .page-hero{padding:40px 0 44px;min-height:0;}
  .entry-row{grid-template-columns:150px 1fr;gap:18px;padding:20px 8px;}
  .entry-thumb{width:150px;}
  .entry-go{display:none;}
  .float-cta{display:none;}
  .mobile-bar{
    display:flex;gap:10px;align-items:center;
    position:fixed;left:0;right:0;bottom:0;z-index:100;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(16,12,34,.96);
    border-top:1px solid var(--line);
    backdrop-filter:blur(10px);
  }
  .mobile-bar .btn{flex:1;}
  .footer-inner{padding-bottom:calc(120px + env(safe-area-inset-bottom));}
}
@media (max-width:600px){
  body{font-size:15.5px;}
  .scope-grid,.flow,.link-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .entry-row{grid-template-columns:1fr;gap:14px;}
  .entry-thumb{width:100%;aspect-ratio:16/10;}
  .entry-body h3{font-size:17px;}
  .hero-meta{gap:20px;}
  .hero-meta .m-num{font-size:20px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:16px;}
  .page-hero h1{font-size:clamp(26px,7vw,32px);}
}

/* roulang page: category2 */
:root{
  --bg:#0B0817;
  --bg-section:#100C22;
  --bg-card:#181233;
  --bg-float:#201A3E;
  --bg-input:#14102A;
  --primary:#38E0B0;
  --secondary:#7A5CFF;
  --accent:#FF7A45;
  --text:#F3F1FF;
  --text-2:#B6B0D4;
  --text-3:#7E7899;
  --line:rgba(255,255,255,.08);
  --line-hi:rgba(56,224,176,.35);
  --r-card:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-img:14px;
  --r-badge:6px;
  --shadow-card:0 8px 24px rgba(0,0,0,.35);
  --shadow-hi:0 16px 40px rgba(0,0,0,.45);
  --rail:240px;
  --container:1240px;
  --font:"HarmonyOS Sans SC","MiSans","PingFang SC","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Space Grotesk","Inter","HarmonyOS Sans SC","PingFang SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--primary)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
strong{font-weight:600;color:var(--text)}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 40px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}

/* ---------- 侧栏导航 ---------- */
.side-rail{
  position:fixed;
  top:0;left:0;
  width:var(--rail);
  height:100vh;
  background:#0D0A1C;
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  gap:24px;
  padding:28px 18px 24px;
  overflow:hidden;
  z-index:60;
  transition:width .24s ease;
}
.rail-brand{display:flex;align-items:center;gap:10px;padding:0 6px;min-height:40px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  background:var(--bg-float);
  border:1px solid var(--line-hi);
  border-radius:10px;
}
.brand-mark svg{width:20px;height:20px}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand-text small{display:block;font-size:11px;font-weight:400;color:var(--text-3);letter-spacing:.08em}

.side-group-title{
  font-size:12px;color:var(--text-3);
  letter-spacing:.14em;
  padding:0 10px;margin:0 0 8px;
  white-space:nowrap;
}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--primary);
  transition:transform .2s ease;
}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
.nav-link.is-active{background:#1A1533;color:var(--text);font-weight:600}
.nav-link.is-active::after{transform:translateY(-50%) scaleY(1)}

.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.rail-cta{
  display:flex;align-items:center;justify-content:center;
  min-height:46px;padding:0 16px;
  background:var(--primary);color:#04160F;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:700;
  white-space:nowrap;
  transition:transform .18s ease-out,filter .18s ease-out,box-shadow .18s ease-out;
}
.rail-cta:hover{color:#04160F;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px var(--line-hi),var(--shadow-card)}
.rail-contact{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  padding:0 10px;white-space:nowrap;
}
.rail-contact:hover{color:var(--primary)}

/* ---------- 页面容器 ---------- */
.page-shell{padding-left:var(--rail)}
main{display:block}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  position:sticky;top:0;z-index:70;
  display:none;
  align-items:center;justify-content:space-between;
  gap:12px;
  padding:10px 16px;
  background:rgba(11,8,23,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.mobile-brand{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700}
.mobile-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:8px}
.mobile-actions{display:flex;align-items:center;gap:8px}
.mobile-quick{
  min-height:44px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-hi);color:var(--primary);font-size:13px;
}
.burger{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  display:grid;place-items:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.drawer{
  position:fixed;inset:0;z-index:90;
  display:flex;justify-content:flex-end;
  visibility:hidden;opacity:0;
  transition:opacity .22s ease,visibility .22s ease;
}
.drawer-panel{
  width:min(360px,86vw);
  height:100%;
  background:#0D0A1C;
  border-left:1px solid var(--line);
  padding:20px;
  display:flex;flex-direction:column;gap:18px;
  transform:translateX(24px);
  transition:transform .26s ease;
  overflow-y:auto;
}
body.nav-open .drawer{visibility:visible;opacity:1}
body.nav-open .drawer-panel{transform:translateX(0)}
body.nav-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:18px;color:var(--text-2);
}
.drawer-close:hover{color:var(--primary);border-color:var(--line-hi)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  min-height:48px;display:flex;align-items:center;
  padding:0 14px;border-radius:12px;
  background:rgba(255,255,255,.03);
  font-size:15px;color:var(--text-2);
}
.drawer-nav a.is-active{background:#1A1533;color:var(--text);font-weight:600}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .18s ease-out,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--primary);color:#04160F;border-radius:var(--r-pill)}
.btn-primary:hover{color:#04160F;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px var(--line-hi),var(--shadow-card)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--line-hi)}
.btn-ghost:hover{color:var(--primary);background:rgba(56,224,176,.12);transform:translateY(-2px)}
.btn-line{background:transparent;border-color:var(--line);color:var(--text-2);border-radius:var(--r-btn)}
.btn-line:hover{color:var(--text);border-color:var(--line-hi);background:rgba(255,255,255,.04)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed;transform:none}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}

/* ---------- 小号 Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-section);min-height:308px;display:flex;align-items:flex-end}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.62}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,8,23,.96) 0%,rgba(11,8,23,.84) 46%,rgba(16,12,34,.62) 100%);
}
.hero-media::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:radial-gradient(rgba(243,241,255,.22) 1px,transparent 1.4px);
  background-size:48px 48px;opacity:.35;
}
.hero-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:52px;width:100%}
.crumbs{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:18px}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:rgba(255,255,255,.22)}
.crumb-current{color:var(--text-2)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.15;
  letter-spacing:-.02em;
  max-width:900px;
}
.lede{margin-top:14px;font-size:16px;color:var(--text-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;scroll-margin-top:96px}
.section-alt{background:var(--bg-section);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.1em;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--primary);opacity:.7}
.text-link{font-size:14px;color:var(--primary);border-bottom:1px solid rgba(56,224,176,.4);padding-bottom:2px}
.text-link:hover{color:var(--primary);border-color:var(--primary)}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-item{padding:26px 24px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--text)}
.stat-num em{font-style:normal;font-size:15px;color:var(--text-3);margin-left:4px;font-weight:500}
.stat-label{margin-top:6px;font-size:14px;color:var(--text-2)}

/* ---------- 交错卡片网格 ---------- */
.mosaic{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  grid-auto-flow:dense;
  gap:24px;
}
.m-card{
  display:flex;flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.m-card:hover{transform:translateY(-2px);border-color:var(--line-hi);box-shadow:var(--shadow-card)}
.m-card.is-wide{grid-column:span 2;flex-direction:row}
.m-card.is-wide .m-media{width:52%;flex:0 0 52%;aspect-ratio:auto}
.m-card.is-wide .m-body{padding:32px}
.m-media{position:relative;aspect-ratio:16/10;background:var(--bg-input);overflow:hidden}
.m-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.m-card:hover .m-media img{transform:scale(1.03)}
.m-body{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1}
.m-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 9px;border-radius:var(--r-badge);
  font-size:12px;letter-spacing:.06em;
  background:rgba(122,92,255,.14);
  color:#A995FF;
  border:1px solid rgba(122,92,255,.24);
}
.badge-live{background:rgba(56,224,176,.14);color:var(--primary);border-color:rgba(56,224,176,.28)}
.badge-accent{background:rgba(255,122,69,.14);color:var(--accent);border-color:rgba(255,122,69,.28)}
.m-title{font-size:20px;line-height:1.4;font-weight:600}
.m-desc{font-size:15px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.m-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3)}
.m-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2)}
.m-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.m-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2)}
.m-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--primary);opacity:.85}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.flow-step{
  position:relative;
  background:var(--bg-section);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 22px;
}
.step-num{
  display:inline-grid;place-items:center;
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(122,92,255,.4);
  background:rgba(122,92,255,.12);
  color:#B8A8FF;
  font-family:var(--font-num);font-size:14px;font-weight:700;
  margin-bottom:16px;
}
.step-title{font-size:17px;font-weight:600;margin-bottom:8px}
.flow-step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 角色卡 ---------- */
.roles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.role-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
  transition:transform .18s ease-out,border-color .18s ease-out;
}
.role-card:hover{transform:translateY(-2px);border-color:var(--line-hi)}
.role-icon{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(56,224,176,.1);
  border:1px solid rgba(56,224,176,.26);
  color:var(--primary);
  margin-bottom:16px;
}
.role-icon svg{width:22px;height:22px}
.role-card h3{font-size:18px;margin-bottom:8px}
.role-card p{font-size:14px;color:var(--text-2)}

/* ---------- 字段表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);
  overflow-x:auto;background:var(--bg-section);
}
table{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:var(--bg-card);color:var(--text);font-weight:600;font-size:13px;letter-spacing:.04em}
td{color:var(--text-2)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover td{background:rgba(255,255,255,.02);color:var(--text)}
td .num{color:var(--text)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:14px 4px;
  font-size:17px;font-weight:600;text-align:left;color:var(--text);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;color:var(--primary);
  transition:transform .22s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a p{padding:0 4px 22px;font-size:15px;color:var(--text-2);max-width:860px}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(0deg,rgba(56,224,176,.08),rgba(56,224,176,.08)),var(--bg-section);
  border:1px solid var(--line-hi);
  border-radius:24px;
  padding:52px 44px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(243,241,255,.2) 1px,transparent 1.4px);
  background-size:44px 44px;opacity:.25;pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;max-width:640px}
.cta-inner p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关分类 ---------- */
.related{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  padding:26px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--line-hi);box-shadow:var(--shadow-card)}
.rel-card h3{font-size:18px}
.rel-card p{font-size:14px;color:var(--text-2)}
.rel-card .rel-go{margin-top:6px;font-size:13px;color:var(--primary);font-family:var(--font-num)}
.back-home{display:flex;justify-content:center;margin-top:36px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0A0714;
  border-top:1px solid var(--line);
  position:relative;
  padding-bottom:96px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(243,241,255,.16) 1px,transparent 1.4px);
  background-size:52px 52px;opacity:.2;pointer-events:none;
}
.footer-inner{position:relative;z-index:2;padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:340px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li{font-size:14px;color:var(--text-2)}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:32px;bottom:32px;z-index:80;
  display:inline-flex;align-items:center;gap:10px;
  min-height:52px;padding:0 24px;
  background:var(--primary);color:#04160F;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:700;
  box-shadow:var(--shadow-card);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,filter .18s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#04160F;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px var(--line-hi),var(--shadow-hi)}
.float-cta svg{width:16px;height:16px}

.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  display:none;gap:12px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(11,8,23,.94);
  backdrop-filter:blur(10px);
  border-top:1px solid var(--line);
}
.sticky-bar .btn{flex:1;min-height:48px;padding:0 12px;font-size:15px}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--rail:88px}
  .side-rail{padding:22px 10px 20px;align-items:center}
  .rail-brand{padding:0;justify-content:center;width:100%}
  .brand-text{display:none}
  .side-group-title{opacity:0;height:0;margin:0;overflow:hidden}
  .side-nav{width:100%;align-items:center}
  .nav-link{font-size:0;justify-content:center;padding:0;width:100%}
  .nav-link::before{content:attr(data-char);font-size:13px;letter-spacing:.02em}
  .rail-foot{width:100%;align-items:center}
  .rail-cta{padding:0 8px;font-size:0;width:56px}
  .rail-cta::before{content:"咨询";font-size:13px;font-weight:700}
  .rail-contact{display:none}
  .side-rail:hover{width:240px;padding:28px 18px 24px;align-items:stretch;box-shadow:var(--shadow-hi)}
  .side-rail:hover .brand-text{display:inline}
  .side-rail:hover .side-group-title{opacity:1;height:auto;margin-bottom:8px}
  .side-rail:hover .side-nav{align-items:stretch}
  .side-rail:hover .nav-link{font-size:14px;justify-content:flex-start;padding:0 12px;width:auto}
  .side-rail:hover .nav-link::before{content:none}
  .side-rail:hover .rail-cta{width:auto;padding:0 16px;font-size:14px}
  .side-rail:hover .rail-cta::before{content:none}
  .side-rail:hover .rail-contact{display:flex}
}

@media (max-width:1023px){
  .side-rail{display:none}
  .page-shell{padding-left:0}
  .mobile-bar{display:flex}
  .float-cta{display:none}
  .sticky-bar{display:flex}
  .container{padding:0 24px}
  .section{padding:64px 0;scroll-margin-top:80px}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .roles{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-inner{padding-top:56px}
  .site-footer{padding-bottom:128px}
  .cta-band{padding:40px 26px}
}

@media (max-width:767px){
  .container{padding:0 18px}
  .page-hero{min-height:280px}
  .hero-inner{padding-top:56px;padding-bottom:40px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:20px 16px}
  .stat-item:nth-child(odd){border-right:1px solid var(--line)}
  .stat-item:nth-last-child(-n+2){border-bottom:0}
  .mosaic{grid-template-columns:1fr;gap:18px}
  .m-card.is-wide{grid-column:span 1;flex-direction:column}
  .m-card.is-wide .m-media{width:100%;flex:0 0 auto;aspect-ratio:16/10}
  .m-card.is-wide .m-body{padding:24px}
  .flow{grid-template-columns:1fr}
  .roles{grid-template-columns:1fr}
  .related{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .faq-q{font-size:16px}
}

@media (max-width:520px){
  body{font-size:15px}
  .section{padding:56px 0}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .stat-num{font-size:24px}
  .m-title{font-size:18px}
}