/* roulang page: index */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --elev:#131C31;
  --accent:#35E0C0;
  --accent-dim:rgba(53,224,192,.14);
  --amber:#FFC46B;
  --amber-dim:rgba(255,196,107,.14);
  --text:#EEF2F8;
  --text-2:#A7B2C7;
  --text-3:#6E7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.22);
  --r-card:16px;
  --r-btn:12px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(0,0,0,.4);
  --sh-2:0 12px 32px rgba(0,0,0,.35);
  --sh-cta:0 0 0 1px rgba(53,224,192,.5),0 8px 28px rgba(53,224,192,.28);
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --gap-section:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  background-position:center top;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* 容器覆盖 */
.container,.container-fluid{
  width:100%;
  max-width:1200px;
  margin-inline:auto;
  padding-inline:24px;
}
@media(min-width:1400px){.container{max-width:1280px}}

/* 顶部信息条 */
.topbar{
  height:36px;
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.02);
  font-size:13px;
  color:var(--text-3);
}
.topbar .container{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{font-family:var(--mono);letter-spacing:.4px;color:var(--text-2)}
.topbar-note{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-link{color:var(--text-2);transition:color .2s}
.topbar-link:hover{color:var(--accent)}
.btn-mini{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-size:12px;color:var(--text);
  background:transparent;
  transition:border-color .2s,background .2s,color .2s;
}
.btn-mini:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-dim)}
@media(max-width:767px){
  .topbar-note,.topbar-right .topbar-link{display:none}
  .topbar{height:34px}
}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,11,24,.92);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:10px;
  border:1px solid rgba(53,224,192,.38);
  background:linear-gradient(135deg,rgba(53,224,192,.22),rgba(53,224,192,.04));
  position:relative;overflow:hidden;flex-shrink:0;
}
.logo-mark span{
  position:absolute;left:8px;top:50%;
  width:26px;height:4px;border-radius:2px;
  background:var(--accent);
  transform:rotate(-38deg);
  transform-origin:left center;
  opacity:.9;
}
.logo-mark span:nth-child(2){width:20px;top:calc(50% + 9px);opacity:.62}
.logo-mark span:nth-child(3){width:14px;top:calc(50% + 18px);opacity:.4}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .2s,background .2s;
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:0;height:2px;background:var(--accent);
  transform:translateX(-50%);
  transition:width .22s ease;
  border-radius:2px;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{width:16px}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{width:16px}
.nav-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease,filter .18s ease;
}
.btn-brand{
  background:var(--accent);
  color:#04120F;
  box-shadow:var(--sh-cta);
}
.btn-brand:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(53,224,192,.62),0 10px 34px rgba(53,224,192,.36);color:#04120F}
.btn-brand:active{transform:translateY(1px)}
.btn-outline{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:var(--line-strong)}
.btn-ghost{
  background:transparent;color:var(--accent);padding:0 4px;height:auto;
}
.btn-ghost i{transition:transform .2s ease}
.btn-ghost:hover i{transform:translateX(4px)}
.btn-lg{height:52px;padding:0 30px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  border-radius:var(--r-btn);
  background:transparent;color:var(--text);font-size:18px;
}
@media(max-width:991px){
  .nav-links,.nav-actions .btn{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{height:64px}
}
/* 移动端抽屉 */
.offcanvas{
  background:var(--panel);
  color:var(--text);
  border-left:1px solid var(--line);
  width:300px;
}
.offcanvas-header{border-bottom:1px solid var(--line)}
.btn-close{filter:invert(1) grayscale(1);opacity:.7}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin:18px 0 24px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;
  border:1px solid transparent;
  transition:background .2s,color .2s,border-color .2s;
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--elev);color:var(--accent);border-color:var(--line)}
.drawer-search{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-input);
  background:rgba(255,255,255,.03);
  color:var(--text-3);font-size:14px;
}
.form-control,.form-select{
  background:rgba(255,255,255,.03);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  color:var(--text);
  height:44px;
  font-size:14px;
  box-shadow:none;
}
.form-control::placeholder{color:var(--text-3)}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.05);
  border-color:var(--accent);
  color:var(--text);
  box-shadow:0 0 0 3px rgba(53,224,192,.16);
}

/* Hero */
.hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  top:-180px;left:-120px;
  width:620px;height:620px;
  background:radial-gradient(circle,rgba(53,224,192,.16),transparent 62%);
  filter:blur(40px);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:48px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;
  border:1px solid rgba(255,196,107,.34);
  border-radius:999px;
  background:var(--amber-dim);
  color:var(--amber);
  font-size:13px;
  letter-spacing:.3px;
}
.hero h1{
  margin-top:22px;
  font-size:clamp(32px,4.2vw,56px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.5px;
}
.hero h1 .hl{color:var(--accent)}
.hero-sub{
  margin-top:20px;
  font-size:clamp(16px,1.4vw,19px);
  line-height:1.7;
  color:var(--text-2);
  max-width:540px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.stat-num{
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.5px;
}
.stat-num span{font-size:13px;color:var(--text-3);margin-left:3px;font-weight:400}
.stat-label{margin-top:4px;font-size:13px;color:var(--text-3);line-height:1.5}
.hero-panel{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.16);
  aspect-ratio:4/3.4;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat,#0A1020;
}
.hero-panel::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,11,24,.62),rgba(7,11,24,.78));
}
.hero-panel-badge{
  position:absolute;top:16px;right:16px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;
  font-size:12px;
  border-radius:999px;
  background:rgba(7,11,24,.62);
  border:1px solid rgba(53,224,192,.42);
  color:var(--accent);
  backdrop-filter:blur(6px);
}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(53,224,192,.18)}
.hero-panel-inner{
  position:absolute;left:24px;right:24px;bottom:24px;z-index:2;
}
.hero-panel-inner h3{font-size:17px;font-weight:600;color:var(--text)}
.hero-panel-inner p{margin-top:6px;font-size:13px;color:var(--text-2);line-height:1.6}
.hero-panel-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  background:rgba(255,255,255,.04);
}
@media(max-width:991px){
  .hero{padding:40px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-panel{aspect-ratio:16/10}
}
@media(max-width:575px){
  .hero-stats{grid-template-columns:repeat(3,1fr);gap:12px}
  .stat-num{font-size:20px}
  .stat-label{font-size:12px}
}

/* 板块通用 */
.section{padding:var(--gap-section) 0}
.section-tight{padding:calc(var(--gap-section) * .62) 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head.center{margin-inline:auto;text-align:center}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:1.6px;
  text-transform:uppercase;
  color:var(--accent);
}
.sec-eyebrow::before{content:"";width:20px;height:1px;background:var(--accent);opacity:.7}
.sec-title{
  margin-top:14px;
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.3px;
}
.sec-desc{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.8}

/* 卖点错栏 */
.feature-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:24px;
  align-items:stretch;
}
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.feature-lg{
  padding:32px;
  position:relative;
  overflow:hidden;
  display:flex;flex-direction:column;
  border-color:rgba(53,224,192,.2);
  box-shadow:0 0 0 1px rgba(53,224,192,.08),0 14px 40px rgba(0,0,0,.4);
}
.feature-lg::after{
  content:"";
  position:absolute;right:-60px;top:-60px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,192,.13),transparent 66%);
  pointer-events:none;
}
.feature-idx{
  font-family:var(--mono);font-size:13px;letter-spacing:2px;color:var(--amber);
}
.feature-lg h3{margin-top:16px;font-size:24px;font-weight:700;line-height:1.35}
.feature-lg p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.8}
.feature-figure{
  margin-top:auto;padding-top:26px;
}
.feature-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:#0A1020;
  transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.feature-lg:hover .feature-figure img{transform:scale(1.02)}
.feature-col{display:flex;flex-direction:column;gap:24px}
.feature-sm{
  padding:24px;
  flex:1;
  display:flex;gap:16px;align-items:flex-start;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s ease,box-shadow .18s ease;
}
.feature-sm:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.feature-icon{
  width:44px;height:44px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--accent-dim);
  border:1px solid rgba(53,224,192,.28);
  color:var(--accent);
  font-size:17px;
}
.feature-sm .idx{font-family:var(--mono);font-size:12px;color:var(--amber);letter-spacing:1.6px}
.feature-sm h3{margin-top:8px;font-size:18px;font-weight:600;line-height:1.4}
.feature-sm p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.7}
@media(max-width:991px){
  .feature-grid{grid-template-columns:1fr}
}

/* 步骤 */
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-bottom:36px;
}
.step{
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--elev);
  transition:border-color .2s,transform .18s cubic-bezier(.2,.7,.3,1);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.step-no{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:14px;font-weight:700;
  color:#04120F;background:var(--accent);
}
.step h3{margin-top:16px;font-size:17px;font-weight:600}
.step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75}
.stage{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line)}
.stage img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#0A1020}
.stage::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,11,24,.78),rgba(7,11,24,.18) 60%,rgba(7,11,24,.4));
}
.glass-card{
  position:absolute;left:28px;bottom:28px;z-index:2;
  max-width:320px;
  padding:20px;
  border-radius:14px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--sh-2);
}
.glass-card h4{font-size:16px;font-weight:600}
.glass-card p{margin-top:8px;font-size:13px;color:var(--text-2);line-height:1.7}
@media(max-width:767px){
  .steps{grid-template-columns:1fr}
  .glass-card{position:static;margin:16px;max-width:none}
  .stage::after{display:none}
}

/* 社会认同 */
.proof{
  display:grid;grid-template-columns:6fr 6fr;gap:48px;
  padding-top:48px;border-top:1px solid var(--line);
}
.proof-metrics{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.metric{
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--panel);
}
.metric b{
  display:block;font-family:var(--mono);font-size:30px;font-weight:700;letter-spacing:-1px;color:var(--text);
}
.metric b em{font-style:normal;color:var(--accent);font-size:16px;margin-left:2px}
.metric span{display:block;margin-top:6px;font-size:13px;color:var(--text-3);line-height:1.6}
.quote-list{display:flex;flex-direction:column;gap:20px}
.quote{
  padding:24px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--elev);
  transition:border-color .2s,transform .18s ease;
}
.quote:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.quote .qmark{font-family:Georgia,serif;font-size:30px;line-height:1;color:var(--amber);opacity:.8}
.quote p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.quote cite{
  display:block;margin-top:14px;font-style:normal;font-size:13px;color:var(--text-3);
  padding-top:12px;border-top:1px solid var(--line);
}
@media(max-width:991px){
  .proof{grid-template-columns:1fr;gap:32px}
}

/* 最新信息 */
.news-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;
}
.news-head .section-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  padding:0;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s ease,box-shadow .18s ease;
  height:100%;
}
.news-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.news-thumb{overflow:hidden;background:#0A1020}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1;gap:10px}
.chip{
  display:inline-flex;align-items:center;
  align-self:flex-start;
  padding:3px 10px;
  border-radius:999px;
  font-size:12px;
  border:1px solid rgba(255,196,107,.36);
  background:var(--amber-dim);
  color:var(--amber);
}
.news-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.news-foot time{font-family:var(--mono)}
.news-foot i{transition:transform .2s ease}
.news-card:hover .news-foot i{transform:translateX(4px);color:var(--accent)}
.empty-state{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:40px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--r-card);
  background:var(--panel);
  text-align:center;
}
.empty-state i{font-size:26px;color:var(--text-3)}
.empty-state p{font-size:15px;color:var(--text-2)}
@media(max-width:991px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:575px){
  .news-grid{grid-template-columns:1fr}
  .news-head{flex-direction:column;align-items:flex-start;gap:14px}
}

/* FAQ */
.faq-wrap{max-width:820px;margin-inline:auto}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--panel);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s,background .2s;
}
.faq-item[open]{background:var(--elev);border-color:rgba(255,255,255,.16)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px 18px 22px;
  font-size:17px;font-weight:600;color:var(--text);
  border-left:3px solid transparent;
  transition:border-color .2s,color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:26px;height:26px;line-height:24px;text-align:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  font-size:15px;
  transition:transform .25s ease,color .2s,border-color .2s;
}
.faq-item[open] summary{border-left-color:var(--accent);color:var(--text)}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);color:var(--accent);border-color:rgba(53,224,192,.5)}
.faq-item .faq-body{
  padding:0 22px 20px 25px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}

/* 底部转化 */
.cta-panel{
  position:relative;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  border-radius:20px;
  background:linear-gradient(120deg,#0E1526,#0A1122);
  padding:52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-2);
}
.cta-panel::before{
  content:"";
  position:absolute;right:-100px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,192,.3),transparent 62%);
  filter:blur(120px);
  opacity:.9;
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;position:relative}
.cta-panel p{margin-top:12px;font-size:15px;color:var(--text-2);position:relative}
.cta-panel .btn{position:relative;flex-shrink:0}
@media(max-width:767px){
  .cta-panel{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .cta-panel .btn{width:100%}
}

/* 页脚 */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.014);
  padding:64px 0 0;
  margin-top:var(--gap-section);
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.9;max-width:340px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.3px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-3);transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;color:var(--text-3);line-height:2}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .mono{font-family:var(--mono)}
@media(max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:575px){
  .footer-grid{grid-template-columns:1fr}
}

/* 移动端底部固定条 */
.mobile-bar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  height:56px;
  padding:0 16px calc(0px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:12px;
  background:rgba(14,21,38,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.mobile-bar span{font-size:13px;color:var(--text-2)}
.mobile-bar .btn{height:38px;padding:0 18px;font-size:14px;min-width:140px}
@media(max-width:991px){
  .mobile-bar{display:flex}
  body{padding-bottom:56px}
}

/* Bootstrap 组件覆盖 */
.badge{
  border-radius:999px;
  font-weight:600;
  font-size:12px;
  padding:5px 11px;
  background:var(--accent-dim);
  color:var(--accent);
  border:1px solid rgba(53,224,192,.28);
}
.accordion-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:14px !important;
  margin-bottom:12px;
  overflow:hidden;
}
.accordion-button{
  background:transparent;color:var(--text);font-size:17px;font-weight:600;
  box-shadow:none;
}
.accordion-button:not(.collapsed){background:var(--elev);color:var(--accent)}
.accordion-button::after{filter:invert(1);opacity:.6}
.accordion-body{color:var(--text-2);font-size:15px;line-height:1.85}
.divider{height:1px;background:var(--line);border:0;margin:0}
@media(max-width:991px){:root{--gap-section:72px}}
@media(max-width:575px){:root{--gap-section:56px}}

/* roulang page: article */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --panel-2:#131C31;
  --accent:#35E0C0;
  --accent-soft:rgba(53,224,192,.12);
  --amber:#FFC46B;
  --text:#EEF2F8;
  --text-2:#A7B2C7;
  --text-3:#6E7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.22);
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 12px 32px rgba(0,0,0,.35);
  --shadow-cta:0 0 0 1px rgba(53,224,192,.5),0 8px 28px rgba(53,224,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.25;color:var(--text);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}
.mono{font-family:var(--mono);}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}

/* ============ 顶部信息条 ============ */
.topbar{
  height:36px;
  background:#050810;
  border-bottom:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
  position:relative;
  z-index:1040;
}
.topbar-inner{
  height:36px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-left .mono{color:var(--text-2);letter-spacing:.4px;font-size:12.5px;}
.topbar-note{
  color:var(--text-3);
  border-left:1px solid var(--line);
  padding-left:14px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.topbar-right{display:flex;align-items:center;gap:18px;flex-shrink:0;}
.topbar-right a{color:var(--text-2);font-size:13px;}
.topbar-right a:hover{color:var(--accent);}
@media (max-width:767px){
  .topbar-note,.topbar-right a:not(.btn){display:none;}
}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(7,11,24,.55);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,24,.92);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-wrap{height:72px;}
.nav-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;
  align-items:flex-end;
  justify-content:center;
  gap:3px;
  padding:7px 6px;
  border-radius:10px;
  background:linear-gradient(150deg,rgba(53,224,192,.22),rgba(53,224,192,.06));
  border:1px solid rgba(53,224,192,.35);
  transform:rotate(-6deg);
}
.logo-mark span{
  display:block;
  width:3px;
  background:var(--accent);
  border-radius:2px;
  transform:rotate(18deg);
}
.logo-mark span:nth-child(1){height:8px;opacity:.6;}
.logo-mark span:nth-child(2){height:14px;}
.logo-mark span:nth-child(3){height:20px;opacity:.85;}
.logo-text{
  font-size:19px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text);
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  color:var(--accent);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1;
  justify-content:center;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:16px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
  transform:translateX(-50%) scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-links a:hover::after,
.nav-links a.active::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.active{color:var(--accent);}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-xs);
  color:var(--text);
  cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--accent);background:rgba(53,224,192,.08);}
.nav-toggle i{display:block;width:16px;height:2px;background:currentColor;position:relative;}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
}
.nav-toggle i::before{top:-5px;}
.nav-toggle i::after{top:5px;}
.nav-mask{
  position:fixed;
  inset:0;
  background:rgba(3,6,14,.6);
  backdrop-filter:blur(3px);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s;
  z-index:1045;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{
  background:var(--accent);
  color:#04211C;
  box-shadow:var(--shadow-cta);
}
.btn-primary:hover{
  color:#04211C;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(53,224,192,.65),0 12px 34px rgba(53,224,192,.36);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-outline{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-outline:hover{
  border-color:var(--accent);
  color:var(--accent);
  background:rgba(255,255,255,.06);
}
.btn-outline:active{background:rgba(255,255,255,.12);}
.btn-ghost{
  background:transparent;
  border-color:transparent;
  color:var(--text-2);
  padding:0 14px;
}
.btn-ghost:hover{color:var(--accent);}
.btn-ghost .arrow{display:inline-block;transition:transform .18s var(--ease);}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-xs{height:28px;padding:0 12px;font-size:13px;border-radius:8px;}

/* ============ 标签 ============ */
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.3px;
  background:rgba(255,196,107,.12);
  color:var(--amber);
  border:1px solid rgba(255,196,107,.3);
}
.chip-cyan{
  background:var(--accent-soft);
  color:var(--accent);
  border-color:rgba(53,224,192,.3);
}
.seal{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  border-radius:4px;
  border:1px solid rgba(255,196,107,.45);
  color:var(--amber);
  font-size:13px;
  font-weight:600;
  letter-spacing:1px;
  flex-shrink:0;
}

/* ============ 页面头部 / 面包屑 ============ */
.page-head{
  padding:36px 0 8px;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb-line a{color:var(--text-3);}
.breadcrumb-line a:hover{color:var(--accent);}
.breadcrumb-line .sep{color:rgba(255,255,255,.2);}
.breadcrumb-line .cur{
  color:var(--text-2);
  max-width:320px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ============ 文章布局 ============ */
.article-section{
  padding:32px 0 var(--space-section);
}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 296px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-head{
  padding-bottom:20px;
  border-bottom:1px solid var(--line);
  margin-bottom:32px;
}
.article-head .meta-top{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
  flex-wrap:wrap;
}
.article-head h1{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.22;
  letter-spacing:-.2px;
  margin-bottom:20px;
  word-break:break-word;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 22px;
  font-size:13px;
  color:var(--text-3);
  font-family:var(--mono);
}
.article-meta .dot{
  width:3px;height:3px;
  border-radius:50%;
  background:rgba(255,255,255,.25);
}
.article-meta .label{
  font-family:var(--sans);
  color:var(--text-3);
}
.article-meta time{color:var(--text-2);}

/* 正文排版 */
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  word-break:break-word;
}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.35;
  color:var(--text);
  margin:40px 0 16px;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.38em;
  bottom:.38em;
  width:4px;
  border-radius:2px;
  background:var(--accent);
}
.article-body h3{
  font-size:20px;
  color:var(--text);
  margin:30px 0 12px;
}
.article-body h4{
  font-size:17px;
  color:var(--text);
  margin:24px 0 10px;
}
.article-body p{margin:0 0 20px;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body a{
  color:var(--accent);
  border-bottom:1px solid rgba(53,224,192,.35);
}
.article-body a:hover{border-bottom-color:var(--accent);}
.article-body ul,.article-body ol{
  margin:0 0 20px;
  padding-left:4px;
}
.article-body ul li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.78em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--accent);
  opacity:.85;
}
.article-body ol{
  counter-reset:artol;
  padding-left:0;
}
.article-body ol li{
  position:relative;
  counter-increment:artol;
  padding-left:34px;
  margin-bottom:10px;
}
.article-body ol li::before{
  content:counter(artol);
  position:absolute;
  left:0;
  top:.28em;
  width:22px;height:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
  color:var(--amber);
  border:1px solid rgba(255,196,107,.4);
  border-radius:6px;
  line-height:1;
}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-left:3px solid var(--accent);
  background:rgba(53,224,192,.12);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:12px;
  margin:24px auto;
  box-shadow:var(--shadow-1);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-top:10px;
}
.article-body .table-wrap,
.article-body table{
  width:100%;
}
.article-body .table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  margin:24px 0;
  -webkit-overflow-scrolling:touch;
}
.article-body table{
  border-collapse:collapse;
  min-width:520px;
  font-size:15px;
}
.article-body th,.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  text-align:left;
  color:var(--text-2);
}
.article-body th{
  background:var(--panel-2);
  color:var(--text);
  font-weight:600;
  white-space:nowrap;
}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:36px 0;
}

/* 空态 */
.empty-state{
  text-align:center;
  padding:64px 24px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel);
  min-height:260px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
}
.empty-state .empty-icon{
  width:48px;height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  border:1px solid rgba(53,224,192,.35);
  background:var(--accent-soft);
  color:var(--accent);
  font-family:var(--mono);
  font-size:20px;
  font-weight:700;
}
.empty-state h2{
  font-size:22px;
  padding:0;
  margin:0;
}
.empty-state h2::before{display:none;}
.empty-state p{
  color:var(--text-3);
  max-width:420px;
  margin:0;
  font-size:15px;
}

/* 文末区块 */
.article-foot{
  margin-top:48px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.foot-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.rel-title{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:20px;
}
.rel-title h3{
  font-size:19px;
  color:var(--text);
}
.rel-title .line{
  flex:1;
  height:1px;
  background:var(--line);
}
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.rel-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
}
.rel-card .thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--panel-2);
}
.rel-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  margin:0;
  border-radius:0;
  box-shadow:none;
  transition:transform .3s var(--ease);
}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-card .body{
  padding:16px 18px 18px;
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:1;
}
.rel-card h4{
  font-size:15.5px;
  line-height:1.5;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-card p{
  margin:0;
  font-size:13px;
  color:var(--text-3);
  line-height:1.65;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-card .go{
  margin-top:auto;
  font-size:13px;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
}
.rel-card .go .arrow{transition:transform .18s var(--ease);}
.rel-card:hover .go .arrow{transform:translateX(4px);}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:96px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
}
.side-card h3{
  font-size:15px;
  color:var(--text);
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.side-card h3::before{
  content:"";
  width:4px;height:14px;
  border-radius:2px;
  background:var(--accent);
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  font-size:13.5px;
  line-height:1.6;
  color:var(--text-3);
  padding:6px 0 6px 12px;
  border-left:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),padding-left .18s var(--ease);
}
.toc-list a:hover,
.toc-list a.is-active{
  color:var(--accent);
  border-left-color:var(--accent);
  padding-left:16px;
}
.toc-empty{
  font-size:13px;
  color:var(--text-3);
}
.side-links{display:flex;flex-direction:column;gap:0;}
.side-links li + li{border-top:1px solid var(--line);}
.side-links a{
  display:block;
  padding:11px 0;
  font-size:14px;
  line-height:1.6;
  color:var(--text-2);
}
.side-links a:hover{color:var(--accent);}
.side-note{
  font-size:13px;
  color:var(--text-3);
  line-height:1.7;
  margin:0;
}
.side-cta{
  background:linear-gradient(160deg,rgba(53,224,192,.14),rgba(19,28,49,.9));
  border:1px solid rgba(53,224,192,.24);
}
.side-cta p{
  font-size:13.5px;
  color:var(--text-2);
  line-height:1.7;
  margin-bottom:16px;
}
.side-cta .btn{width:100%;}

/* ============ CTA 区 ============ */
.cta-band{
  position:relative;
  padding:56px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--panel);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-100px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,224,192,.28),transparent 70%);
  filter:blur(120px);
  pointer-events:none;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  position:relative;
  z-index:1;
}
.cta-inner h2{
  font-size:clamp(22px,2.4vw,30px);
  margin-bottom:8px;
}
.cta-inner p{
  margin:0;
  color:var(--text-2);
  font-size:15.5px;
}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:#050810;
  padding:64px 0 28px;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  color:var(--text-3);
  line-height:1.8;
  max-width:340px;
  margin:0;
}
.footer-col h4{
  font-size:14px;
  color:var(--text);
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul li{margin-bottom:0;}
.footer-col ul a{
  display:inline-block;
  font-size:14px;
  line-height:2;
  color:var(--text-3);
}
.footer-col ul a:hover{color:var(--accent);}
.footer-col p{
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.8;
  margin:0 0 10px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.footer-bottom .mono{font-size:12.5px;color:rgba(110,122,146,.85);}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .article-layout{gap:40px;grid-template-columns:minmax(0,1fr) 280px;}
}
@media (max-width:991px){
  :root{--space-section:72px;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    width:min(320px,86vw);
    height:100vh;
    height:100dvh;
    background:rgba(14,21,38,.98);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:6px;
    padding:88px 22px 28px;
    transform:translateX(100%);
    transition:transform .28s var(--ease);
    z-index:1050;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{
    padding:13px 14px;
    font-size:15.5px;
    border-radius:10px;
    background:rgba(255,255,255,.03);
  }
  .nav-links a::after{display:none;}
  .nav-links a.active{background:rgba(53,224,192,.1);}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-sm{display:none;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .article-side{position:static;top:auto;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 260px;}
  .article-body{max-width:100%;font-size:16.5px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  :root{--space-section:56px;}
  .container{padding:0 18px;}
  .nav-wrap,.nav-inner{height:64px;}
  .logo-text{font-size:17px;}
  .logo-mark{width:30px;height:30px;}
  .page-head{padding:26px 0 4px;}
  .article-section{padding:24px 0 var(--space-section);}
  .article-head h1{font-size:clamp(24px,6.4vw,30px);}
  .article-meta{gap:8px 16px;font-size:12.5px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin:32px 0 14px;}
  .article-body h3{font-size:18px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:20px;}
  .cta-band{padding:44px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:519px){
  .topbar-right .btn-xs{display:inline-flex;}
  .article-head .meta-top{margin-bottom:14px;}
  .breadcrumb-line .cur{max-width:180px;}
  .side-card{padding:18px;}
  .foot-actions .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --bg:#070B18;
  --panel:#0E1526;
  --raise:#131C31;
  --accent:#35E0C0;
  --accent-soft:rgba(53,224,192,.12);
  --amber:#FFC46B;
  --text-1:#EEF2F8;
  --text-2:#A7B2C7;
  --text-3:#6E7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.22);
  --radius:16px;
  --radius-sm:12px;
  --radius-xs:10px;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 12px 32px rgba(0,0,0,.35);
  --glow:0 0 0 1px rgba(53,224,192,.5),0 8px 28px rgba(53,224,192,.28);
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background-color:var(--bg);
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--text-1);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
time{font-family:var(--mono);font-size:13px;color:var(--text-3)}
::selection{background:rgba(53,224,192,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1400px){.container{max-width:1280px}}
.mono{font-family:var(--mono)}

/* ===== 顶部信息条 ===== */
.info-bar{height:36px;background:#050813;border-bottom:1px solid var(--line);font-size:12.5px;color:var(--text-3);position:relative;z-index:65}
.info-inner{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.info-left{display:flex;align-items:center;gap:10px;min-width:0}
.dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px rgba(53,224,192,.85);flex:none}
.info-left .mono{color:var(--text-2);letter-spacing:.02em;white-space:nowrap}
.info-note{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.info-right{display:flex;align-items:center;gap:18px;flex:none}
.info-right a{color:var(--text-2);transition:color .18s ease}
.info-right a:hover{color:var(--accent)}
.info-btn{border:1px solid var(--line-strong);border-radius:999px;padding:3px 12px;font-size:12px;color:var(--text-1) !important;transition:border-color .2s,color .2s,background .2s}
.info-btn:hover{border-color:var(--accent);color:var(--accent) !important;background:rgba(53,224,192,.08)}
@media (max-width:767px){
  .info-note{display:none}
  .info-right a:not(.info-btn){display:none}
}

/* ===== 主导航 ===== */
.site-header{position:sticky;top:0;z-index:60;background:rgba(7,11,24,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:background .25s ease,border-color .25s ease,box-shadow .25s ease}
.site-header.is-scrolled{background:rgba(7,11,24,.92);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(0,0,0,.38)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{position:relative;width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,rgba(53,224,192,.24),rgba(53,224,192,.04));border:1px solid rgba(53,224,192,.42);display:inline-flex;align-items:flex-end;gap:3px;padding:6px;overflow:hidden}
.logo-mark span{display:block;width:4px;background:var(--accent);border-radius:2px;transform:skewX(-12deg)}
.logo-mark span:nth-child(1){height:8px;opacity:.55}
.logo-mark span:nth-child(2){height:13px;opacity:.8}
.logo-mark span:nth-child(3){height:18px}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text-1);line-height:1}
.logo-text em{font-style:normal;color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{position:relative;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:8px;transition:color .18s ease,background .18s ease}
.nav-links a::after{content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;background:var(--accent);transform:translateX(-50%);transition:width .22s cubic-bezier(.2,.7,.3,1)}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04)}
.nav-links a:hover::after{width:16px}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{width:16px}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;transition:border-color .2s,background .2s}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(255,255,255,.05)}
.nav-toggle i{display:block;width:16px;height:2px;background:var(--text-1);position:relative;border-radius:2px}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .22s ease}
.nav-toggle i::before{top:-5px}
.nav-toggle i::after{top:5px}
.drawer-cta{display:none}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;white-space:nowrap;transition:background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#04201B;box-shadow:var(--glow)}
.btn-primary:hover{background:#4DF0D1;color:#04201B;box-shadow:0 0 0 1px rgba(53,224,192,.65),0 10px 34px rgba(53,224,192,.4)}
.btn-outline{border-color:var(--line-strong);color:var(--text-1);background:rgba(255,255,255,.02)}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.36);color:var(--text-1)}
.btn-text{height:auto;padding:0;color:var(--accent);font-weight:600;background:none;border:0}
.btn-text:hover{color:#4DF0D1}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* ===== 页面英雄区 ===== */
.page-hero{position:relative;overflow:hidden;padding:54px 0 56px;border-bottom:1px solid var(--line);isolation:isolate}
.page-hero::before{content:"";position:absolute;inset:0;background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;opacity:.3;z-index:-2}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,24,.55) 0%,rgba(7,11,24,.88) 62%,var(--bg) 100%);z-index:-1}
.hero-glow{position:absolute;right:-80px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(53,224,192,.22),transparent 66%);filter:blur(90px);pointer-events:none;z-index:-1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-2);transition:color .18s ease}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .now{color:var(--text-1)}
.seal{display:inline-flex;align-items:center;justify-content:center;width:38px;height:26px;border:1px solid rgba(255,196,107,.5);border-radius:4px;font-size:12px;letter-spacing:.08em;color:var(--amber);margin-bottom:16px;font-family:var(--mono)}
.page-hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.16;font-weight:700;letter-spacing:-.01em;max-width:880px}
.h1-brand{color:var(--accent);margin-right:.22em}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:700px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;font-size:12.5px;font-weight:600;color:var(--amber);background:rgba(255,196,107,.1);border:1px solid rgba(255,196,107,.28);white-space:nowrap}
.chip-cyan{color:var(--accent);background:var(--accent-soft);border-color:rgba(53,224,192,.3)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ===== 板块通用 ===== */
.section{padding:var(--sec) 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.section-title{font-size:clamp(22px,2.6vw,32px);line-height:1.28;font-weight:700;letter-spacing:-.01em}
.section-desc{color:var(--text-2);font-size:15px;line-height:1.8;margin-top:10px;max-width:660px}
.divider{height:1px;background:var(--line);margin:0}

/* ===== 目录 + 图文列表 ===== */
.guide-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;margin-top:36px}
.side-index{position:sticky;top:96px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px 18px;box-shadow:var(--shadow-1)}
.side-title{font-size:14px;font-weight:700;color:var(--text-1);letter-spacing:.04em;padding-left:4px}
.index-list{display:flex;flex-direction:column;gap:2px;margin-top:14px}
.index-list a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--text-2);border-left:2px solid transparent;transition:background .18s ease,color .18s ease,border-color .18s ease}
.index-list a:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.index-list a.is-active{color:var(--accent);background:rgba(53,224,192,.1);border-left-color:var(--accent)}
.side-note{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.75;color:var(--text-3)}
.guide-list{display:flex;flex-direction:column}
.guide-item{display:flex;gap:22px;padding:26px 0;border-bottom:1px solid var(--line)}
.guide-item:first-child{padding-top:0}
.guide-item:last-child{border-bottom:0;padding-bottom:0}
.guide-thumb{width:96px;height:96px;flex:none;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--raise)}
.guide-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.2,.7,.3,1)}
.guide-item:hover .guide-thumb img{transform:scale(1.06)}
.guide-body{min-width:0;flex:1}
.guide-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.guide-body h3{font-size:19px;font-weight:700;line-height:1.45;color:var(--text-1)}
.guide-body p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--text-2)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:14px;font-weight:600;color:var(--accent)}
.link-arrow span{transition:transform .2s ease}
.link-arrow:hover span{transform:translateX(4px)}

/* ===== 速查表 ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);margin-top:30px;box-shadow:var(--shadow-1)}
.data-table{width:100%;border-collapse:collapse;min-width:680px;font-size:14.5px}
.data-table th,.data-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}
.data-table thead th{background:rgba(255,255,255,.04);color:var(--text-2);font-size:13px;font-weight:600;letter-spacing:.04em;white-space:nowrap}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table tbody tr{transition:background .18s ease}
.data-table tbody tr:hover{background:rgba(255,255,255,.03)}
.data-table td{color:var(--text-2)}
.data-table td:first-child{color:var(--text-1);font-weight:600;white-space:nowrap}
.data-table .num{font-family:var(--mono);color:var(--amber);font-size:13px}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s ease,box-shadow .18s ease}
.step:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.step-no{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-family:var(--mono);font-size:15px;color:var(--amber);background:rgba(255,196,107,.1);border:1px solid rgba(255,196,107,.3);margin-bottom:16px}
.step h3{font-size:17px;font-weight:700;color:var(--text-1)}
.step p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--text-2)}

/* ===== FAQ ===== */
.faq{max-width:820px;margin:34px auto 0;display:flex;flex-direction:column;gap:12px}
.faq details{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:background .2s ease,border-color .2s ease}
.faq details[open]{background:var(--raise);border-color:var(--line-strong)}
.faq details[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:17px;font-weight:600;color:var(--text-1);cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--mono);font-size:20px;line-height:1;color:var(--accent);transition:transform .22s ease;flex:none}
.faq details[open] summary::after{content:"−"}
.faq .faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ===== 延伸阅读 ===== */
.ext-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px}
.ext-card{display:block;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .18s cubic-bezier(.2,.7,.3,1),border-color .18s ease,box-shadow .18s ease}
.ext-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-2)}
.ext-tag{font-family:var(--mono);font-size:12px;color:var(--text-3);letter-spacing:.04em}
.ext-card h3{margin-top:10px;font-size:16.5px;line-height:1.5;font-weight:700;color:var(--text-1)}
.ext-card p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--text-2)}
.ext-card .go{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--accent)}

/* ===== CTA ===== */
.cta-panel{position:relative;overflow:hidden;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:44px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center;box-shadow:var(--shadow-2)}
.cta-panel::after{content:"";position:absolute;right:-130px;top:-130px;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(53,224,192,.28),transparent 68%);filter:blur(70px);pointer-events:none}
.cta-panel h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700}
.cta-panel p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:520px}
.cta-form{position:relative;z-index:2;display:flex;gap:10px}
.form-control{height:44px;width:100%;padding:0 16px;font-size:15px;color:var(--text-1);background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:10px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
.form-control::placeholder{color:var(--text-3)}
.form-control:focus{outline:none;background:rgba(255,255,255,.06);border-color:var(--accent);box-shadow:0 0 0 3px rgba(53,224,192,.22)}
.form-hint{position:relative;z-index:2;margin-top:12px;font-size:13px;line-height:1.7;color:var(--text-3)}

/* ===== 页脚 ===== */
.site-footer{border-top:1px solid var(--line);background:#050813;padding:56px 0 0;color:var(--text-2);font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.15fr;gap:36px;padding-bottom:40px}
.footer-brand p{margin-top:14px;font-size:13.5px;line-height:1.9;color:var(--text-3);max-width:350px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);letter-spacing:.03em;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-2);transition:color .18s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--text-3)}
.footer-col p + p{margin-top:8px}
.footer-bottom{border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:20px 0 24px;font-size:13px;color:var(--text-3)}

/* ===== 移动端底部条 ===== */
.mobile-bar{display:none}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  :root{--sec:80px}
  .guide-layout{gap:36px}
}
@media (max-width:991px){
  :root{--sec:72px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .nav-links{position:fixed;top:0;right:0;height:100vh;width:min(80vw,330px);margin:0;flex-direction:column;align-items:stretch;gap:6px;padding:88px 20px 28px;background:rgba(10,16,30,.97);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-left:1px solid var(--line);transform:translateX(104%);transition:transform .28s cubic-bezier(.2,.7,.3,1);z-index:70;box-shadow:-20px 0 40px rgba(0,0,0,.45)}
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{padding:14px 12px;font-size:16px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:rgba(53,224,192,.1)}
  .drawer-cta{display:inline-flex;margin-top:14px}
  .guide-layout{grid-template-columns:1fr;gap:28px}
  .side-index{position:static}
  .steps{grid-template-columns:1fr}
  .ext-grid{grid-template-columns:1fr 1fr}
  .cta-panel{grid-template-columns:1fr;padding:34px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .mobile-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:fixed;left:0;right:0;bottom:0;z-index:80;height:56px;padding:0 16px;padding-bottom:env(safe-area-inset-bottom);background:rgba(10,16,30,.84);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-top:1px solid var(--line)}
  .mobile-bar span{font-size:13px;color:var(--text-2)}
  .mobile-bar .btn{min-width:140px}
  .site-footer{padding-bottom:76px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .header-inner{height:64px;gap:12px}
  .logo-text{font-size:15.5px}
  .page-hero{padding:40px 0 44px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .ext-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
}
@media (max-width:575px){
  .guide-item{gap:16px}
  .guide-thumb{width:78px;height:78px}
  .guide-body h3{font-size:17px}
  .guide-body p{font-size:14px}
  .faq summary{font-size:15.5px;padding:16px 18px}
  .faq .faq-body{padding:0 18px 18px;font-size:14px}
  .data-table{font-size:13.5px}
  .hero-chips .chip{font-size:12px}
}

/* roulang page: category2 */
:root{
  --bg:#070B18;
  --surface:#0E1526;
  --surface-2:#131C31;
  --accent:#35E0C0;
  --accent-soft:rgba(53,224,192,.12);
  --amber:#FFC46B;
  --amber-soft:rgba(255,196,107,.14);
  --text-1:#EEF2F8;
  --text-2:#A7B2C7;
  --text-3:#6E7A92;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.22);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);
  --shadow-2:0 12px 32px rgba(0,0,0,.35);
  --shadow-glow:0 0 0 1px rgba(53,224,192,.5), 0 8px 28px rgba(53,224,192,.28);
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --pad-section:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-1);
  background-color:var(--bg);
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:24px 24px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--accent);}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1400px){
  .container{max-width:1280px;}
}
.mono{font-family:var(--mono);}

/* ---------- 顶部信息条 ---------- */
.topbar{
  height:36px;
  background:#080D1C;
  border-bottom:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  display:flex;
  align-items:center;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:36px;
}
.topbar-left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar-domain{
  font-family:var(--mono);
  color:var(--text-2);
  letter-spacing:.4px;
  white-space:nowrap;
}
.topbar-divider{width:1px;height:12px;background:var(--line);}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.topbar-actions a{color:var(--text-3);transition:color .18s ease;}
.topbar-actions a:hover{color:var(--accent);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.nav-shell{
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(7,11,24,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.nav-shell.is-scrolled{
  background:rgba(8,13,28,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  width:100%;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;
  border:1.5px solid var(--accent);
  border-radius:7px 7px 7px 2px;
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  padding:0 5px;
  transform:skewX(-6deg);
  background:linear-gradient(150deg, rgba(53,224,192,.16), rgba(53,224,192,0) 70%);
}
.logo-mark span{display:block;height:2px;border-radius:2px;background:var(--accent);}
.logo-mark span:nth-child(1){width:66%;opacity:.55;}
.logo-mark span:nth-child(2){width:100%;}
.logo-mark span:nth-child(3){width:46%;opacity:.75;}
.logo-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--text-1);
  white-space:nowrap;
}
.logo-text em{font-style:normal;color:var(--accent);}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:12px;
  flex:1;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  font-size:15px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .18s ease, background .18s ease;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:16px;height:2px;
  transform:translateX(-50%) scaleX(0);
  background:var(--accent);
  border-radius:2px;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.active{color:var(--accent);}
.nav-links a.active::after{transform:translateX(-50%) scaleX(1);}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--surface);
  color:var(--text-1);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:16px;height:1.5px;
  background:var(--text-1);
  position:relative;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;width:16px;height:1.5px;background:var(--text-1);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(3,6,14,.6);
  backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease, visibility .25s ease;
  z-index:1050;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--surface);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
  z-index:1060;
  padding:22px 20px;
  display:flex;
  flex-direction:column;
  gap:18px;
  overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:36px;height:36px;border-radius:9px;
  border:1px solid var(--line);
  background:var(--surface-2);
  color:var(--text-2);
  cursor:pointer;
  font-size:18px;line-height:1;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--line);
  border-radius:10px;
  padding:0 12px;
  height:44px;
  background:var(--surface-2);
}
.drawer-search input{
  flex:1;border:0;background:transparent;color:var(--text-1);
  font-size:14px;outline:none;height:100%;
}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  padding:12px 10px;
  border-radius:10px;
  color:var(--text-2);
  font-size:15px;
  border:1px solid transparent;
}
.drawer-links a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.drawer-links a.active{color:var(--accent);border-color:rgba(53,224,192,.28);background:var(--accent-soft);}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 24px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:transform .18s cubic-bezier(.2,.7,.3,1), background .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
  text-decoration:none;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.btn-primary{
  background:var(--accent);
  color:#04120F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  background:#46eccd;
  color:#04120F;
  box-shadow:0 0 0 1px rgba(53,224,192,.65), 0 12px 34px rgba(53,224,192,.34);
}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  border-color:var(--line-strong);
  background:transparent;
  color:var(--text-1);
}
.btn-outline:hover{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.4);
  color:var(--text-1);
}
.btn-ghost{
  background:transparent;
  color:var(--text-2);
  padding:0 8px;
  height:auto;
}
.btn-ghost:hover{color:var(--accent);}
.btn-ghost .arrow{transition:transform .18s ease;display:inline-block;}
.btn-ghost:hover .arrow{transform:translateX(4px);}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:10px;}
.btn-xs{height:26px;padding:0 12px;font-size:12px;border-radius:8px;font-weight:600;}

/* ---------- 通用板块 ---------- */
main{position:relative;z-index:1;}
.section{padding:var(--pad-section) 0;}
.section-tight{padding:64px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:36px;
}
.section-title{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:.2px;
}
.section-desc{
  color:var(--text-2);
  font-size:15px;
  margin-top:10px;
  max-width:640px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:1.6px;
  color:var(--amber);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;background:var(--amber);display:inline-block;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.2px;
  color:var(--amber);
  background:var(--amber-soft);
  border:1px solid rgba(255,196,107,.28);
}
.chip-cyan{
  color:var(--accent);
  background:var(--accent-soft);
  border-color:rgba(53,224,192,.28);
}
.tag-square{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border:1px solid rgba(53,224,192,.4);
  border-radius:4px;
  color:var(--accent);
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  padding-top:28px;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb-list li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb-list li+li::before{content:"/";color:var(--text-3);opacity:.7;}
.breadcrumb-list a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb-list a:hover{color:var(--accent);}
.breadcrumb-list .current{color:var(--text-1);}

/* ---------- 页头 ---------- */
.page-hero{
  padding:34px 0 12px;
  position:relative;
}
.page-hero h1{
  font-size:clamp(32px,4.2vw,52px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.5px;
  margin-bottom:16px;
  max-width:16em;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.page-hero .lead{
  font-size:17px;
  color:var(--text-2);
  max-width:640px;
}

/* ---------- 顶部全宽大卡 ---------- */
.feature-banner{
  position:relative;
  margin-top:34px;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  background:#0A1020;
}
.feature-banner::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.feature-banner::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 88% 8%, rgba(53,224,192,.20), transparent 62%),
    linear-gradient(100deg, rgba(5,9,20,.94) 22%, rgba(5,9,20,.72) 58%, rgba(5,9,20,.86) 100%);
}
.feature-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.55fr .85fr;
  gap:36px;
  padding:48px;
  align-items:center;
}
.feature-inner h2{
  font-size:clamp(24px,2.8vw,36px);
  line-height:1.25;
  font-weight:700;
  margin:16px 0 14px;
}
.feature-inner p{
  color:var(--text-2);
  font-size:15.5px;
  max-width:520px;
}
.feature-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.feature-stats{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.mini-stat{
  border:1px solid var(--line);
  background:rgba(14,21,38,.72);
  border-radius:14px;
  padding:14px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  transition:border-color .18s ease, transform .18s ease;
}
.mini-stat:hover{border-color:rgba(53,224,192,.35);transform:translateY(-2px);}
.mini-stat .label{font-size:13px;color:var(--text-2);}
.mini-stat .value{
  font-family:var(--mono);
  font-size:22px;
  font-weight:700;
  color:var(--accent);
  letter-spacing:.5px;
}
.mini-stat .value small{font-size:12px;color:var(--text-3);margin-left:4px;font-weight:400;}

/* ---------- 错落卡片 ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.news-card{
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1), border-color .18s ease, box-shadow .18s ease, background .18s ease;
  display:flex;
  flex-direction:column;
  gap:14px;
  height:100%;
}
.news-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  background:var(--surface-2);
  box-shadow:var(--shadow-2);
}
.news-grid > .news-card:nth-child(even){margin-top:24px;}
.news-card h3{
  font-size:19px;
  font-weight:700;
  line-height:1.5;
  color:var(--text-1);
}
.news-card p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.news-card .card-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
}
.news-card .card-foot .mono{letter-spacing:.3px;}
.news-card .card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--accent);
  font-weight:600;
  font-size:13.5px;
}
.news-card .card-link .arrow{transition:transform .18s ease;}
.news-card .card-link:hover .arrow{transform:translateX(4px);}
.news-card .thumb{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:#0A1020;
}
.news-card .thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.news-card:hover .thumb img{transform:scale(1.03);}

/* ---------- 关键指标横条 ---------- */
.metrics{
  border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(19,28,49,.9), rgba(14,21,38,.9));
  border-radius:18px;
  padding:8px;
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.metric{
  padding:24px 22px;
  position:relative;
}
.metric+.metric::before{
  content:"";
  position:absolute;
  left:0;top:18px;bottom:18px;
  width:1px;
  background:var(--line);
}
.metric .num{
  font-family:var(--mono);
  font-size:30px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.5px;
  line-height:1.2;
}
.metric .num span{color:var(--accent);font-size:16px;margin-left:4px;font-weight:600;}
.metric .cap{
  margin-top:8px;
  font-size:13.5px;
  color:var(--text-2);
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:820px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.faq-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface);
  transition:background .2s ease, border-color .2s ease;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  font-size:17px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  color:var(--text-1);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-icon{
  flex-shrink:0;
  width:22px;height:22px;
  position:relative;
  border-radius:6px;
  background:rgba(255,255,255,.05);
  transition:transform .22s ease, background .22s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--text-2);
  border-radius:2px;
}
.faq-icon::before{left:6px;right:6px;top:10px;height:2px;}
.faq-icon::after{top:6px;bottom:6px;left:10px;width:2px;transition:opacity .2s ease;}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:var(--accent-soft);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item[open] .faq-icon::before{background:var(--accent);}
.faq-answer{
  padding:0 22px 20px 22px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.85;
  border-left:3px solid transparent;
}
.faq-item[open]{
  background:var(--surface-2);
  border-color:rgba(53,224,192,.28);
  box-shadow:inset 3px 0 0 var(--accent);
}

/* ---------- 延伸阅读 ---------- */
.readmore{
  border:1px solid var(--line);
  border-radius:18px;
  background:var(--surface);
  padding:32px;
}
.readmore h2{
  font-size:22px;
  font-weight:700;
  margin-bottom:6px;
}
.readmore .hint{font-size:14px;color:var(--text-3);margin-bottom:22px;}
.readmore-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
}
.readmore-item{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--surface-2);
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:transform .18s ease, border-color .18s ease;
}
.readmore-item:hover{transform:translateY(-3px);border-color:rgba(53,224,192,.35);}
.readmore-item .idx{
  font-family:var(--mono);
  font-size:12px;
  color:var(--amber);
  letter-spacing:1.4px;
}
.readmore-item strong{font-size:15.5px;line-height:1.6;color:var(--text-1);font-weight:600;}
.readmore-item span.desc{font-size:13px;color:var(--text-3);line-height:1.7;}
.readmore-item .go{
  margin-top:auto;
  font-size:13px;
  color:var(--accent);
  display:inline-flex;align-items:center;gap:6px;
}

/* ---------- 底部转化区 ---------- */
.cta-panel{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:20px;
  background:linear-gradient(120deg,#0D1526 0%,#101A2F 55%,#0B1222 100%);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-60px;top:-90px;
  width:420px;height:320px;
  background:radial-gradient(closest-side, rgba(53,224,192,.28), transparent 72%);
  filter:blur(60px);
  pointer-events:none;
}
.cta-panel h2{
  position:relative;
  z-index:2;
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.3;
  font-weight:700;
}
.cta-panel p{
  position:relative;
  z-index:2;
  color:var(--text-2);
  font-size:15px;
  margin-top:10px;
  max-width:560px;
}
.cta-panel .cta-actions{
  position:relative;
  z-index:2;
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  flex-shrink:0;
}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:#060A15;
  padding:64px 0 28px;
  margin-top:32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:36px;
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.85;
  max-width:330px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text-1);
  letter-spacing:.4px;
  margin-bottom:14px;
}
.footer-col ul li{margin-bottom:2px;}
.footer-col ul a{
  font-size:14px;
  color:var(--text-2);
  line-height:2;
  display:inline-block;
  transition:color .18s ease, transform .18s ease;
}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px);}
.footer-col p{font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:280px;}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}

/* ---------- 移动端底部条 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:56px;
  padding:0 14px calc(0px + env(safe-area-inset-bottom));
  align-items:center;
  justify-content:space-between;
  gap:12px;
  background:rgba(10,16,32,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.mobile-bar .tip{font-size:13px;color:var(--text-2);}
.mobile-bar .btn{min-width:140px;height:40px;font-size:14px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-section:80px;}
  .feature-inner{padding:40px;}
}
@media (max-width:991px){
  :root{--pad-section:72px;}
  .nav-links{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{gap:16px;justify-content:space-between;}
  .feature-inner{grid-template-columns:1fr;gap:28px;padding:34px;}
  .feature-stats{flex-direction:row;flex-wrap:wrap;}
  .mini-stat{flex:1 1 160px;}
  .news-grid{grid-template-columns:1fr;}
  .news-grid > .news-card:nth-child(even){margin-top:0;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metric:nth-child(3)::before{display:none;}
  .metric:nth-child(odd)::before{display:none;}
  .metric:nth-child(1),(.metric:nth-child(2)){border-bottom:1px solid var(--line);}
  .readmore-grid{grid-template-columns:1fr;}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .mobile-bar{display:flex;}
  body{padding-bottom:56px;}
}
@media (max-width:767px){
  .topbar-note,.topbar-actions a:not(.btn),.topbar-divider{display:none;}
  .topbar-actions{gap:8px;}
  .page-hero h1{font-size:clamp(28px,7.2vw,38px);}
  .feature-inner{padding:26px;border-radius:16px;}
  .feature-banner{border-radius:16px;}
  .feature-actions .btn{flex:1 1 100%;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .cta-panel{padding:28px;border-radius:16px;}
  .readmore{padding:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:575px){
  :root{--pad-section:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .metrics{grid-template-columns:1fr;}
  .metric+.metric::before{display:none;}
  .metric{border-top:1px solid var(--line);}
  .metric:first-child{border-top:0;}
  .news-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;}
  .mobile-bar .tip{display:none;}
  .mobile-bar .btn{width:100%;}
}