/* roulang page: index */
:root{
  --bg-900:#05070E;
  --bg-800:#0A1020;
  --bg-700:#101A30;
  --primary:#14E8C4;
  --primary-deep:#0E9C86;
  --accent:#7A5CFF;
  --warn:#FFB13D;
  --t1:#EAF2FF;
  --t2:#9FB2CC;
  --t3:#6B7F9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --glass:rgba(18,28,48,.55);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.45);
  --shadow-float:0 28px 80px rgba(0,0,0,.6);
  --grad-line:linear-gradient(90deg,#14E8C4,#7A5CFF);
  --trans:180ms cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg-800);
  color:var(--t2);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(20,232,196,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-900)}
::-webkit-scrollbar-thumb{background:rgba(20,232,196,.28);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,232,196,.45)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1280px){.container{max-width:1280px}}

/* ============ 顶部信息条 ============ */
.topbar{
  background:rgba(10,16,32,.9);
  border-bottom:1px solid transparent;
  border-image:var(--grad-line) 1;
  height:36px;
  overflow:hidden;
  transition:height var(--trans),opacity var(--trans);
}
.topbar-inner{
  height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.topbar-left{font-size:12px;color:var(--t3);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.topbar-mid{font-size:12px;color:var(--t2);display:none}
.topbar-right{display:flex;align-items:center;gap:12px}
.topbar-link{font-size:12px;color:var(--t2);transition:color var(--trans)}
.topbar-link:hover{color:var(--primary)}
.topbar-btn{
  font-size:11px;font-weight:600;color:#04211C;background:var(--primary);
  padding:2px 10px;border-radius:999px;line-height:1.7;transition:var(--trans);
}
.topbar-btn:hover{filter:brightness(1.08)}
@media(min-width:768px){.topbar-mid{display:block}}
.site-header.is-scrolled .topbar{height:0;opacity:0}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:50;transition:background var(--trans),box-shadow var(--trans),border-color var(--trans);border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(5,7,14,.85);backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:12px;min-width:0}
.logo-mark{
  width:40px;height:40px;flex:none;border-radius:12px;
  background:linear-gradient(140deg,rgba(20,232,196,.9),rgba(122,92,255,.9));
  display:flex;align-items:center;justify-content:center;
  color:#04211C;font-weight:800;font-size:17px;
  box-shadow:0 8px 24px rgba(20,232,196,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-name{color:var(--t1);font-weight:800;font-size:15px;letter-spacing:.01em}
.logo-sub{color:var(--t3);font-size:11px;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.nav-links{display:none;align-items:center;gap:26px}
.nav-link{position:relative;font-size:15px;color:var(--t2);padding:6px 0;transition:color var(--trans)}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--grad-line);transform:scaleX(0);transform-origin:left;transition:transform var(--trans);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 6px 14px rgba(20,232,196,.5)}
.nav-actions{display:flex;align-items:center;gap:12px}
.burger{
  width:44px;height:44px;border:1px solid var(--line-strong);border-radius:12px;
  background:rgba(18,28,48,.5);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  cursor:pointer;transition:var(--trans);
}
.burger span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:var(--trans)}
.burger:hover{border-color:rgba(20,232,196,.5)}
@media(min-width:1024px){
  .nav-links{display:flex}
  .burger{display:none}
}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:70;
  background:rgba(10,16,32,.96);backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:24px 22px;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line-strong);background:transparent;cursor:pointer;color:var(--t1);font-size:18px}
.drawer-links{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-link{padding:14px 12px;border-radius:12px;color:var(--t2);font-size:16px;border:1px solid transparent;transition:var(--trans)}
.drawer-link:hover,.drawer-link.active{color:var(--t1);background:rgba(20,232,196,.08);border-color:rgba(20,232,196,.28)}
.drawer-foot{padding-top:18px;border-top:1px solid var(--line)}
.nav-mask{position:fixed;inset:0;background:rgba(5,7,14,.6);z-index:65;opacity:0;pointer-events:none;transition:opacity var(--trans)}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:12px 22px;border-radius:var(--radius-btn);
  cursor:pointer;border:1px solid transparent;transition:var(--trans);min-height:44px;text-align:center;
}
.btn-primary{
  background:var(--primary);color:#04211C;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  filter:drop-shadow(0 8px 22px rgba(20,232,196,.35));
}
.btn-primary:hover{filter:brightness(1.08) drop-shadow(0 12px 28px rgba(20,232,196,.45));transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(18,28,48,.5);border-color:var(--line-strong);color:var(--t1);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(20,232,196,.55);color:var(--primary);transform:translateY(-2px)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--t2);font-size:14px;
  background-image:linear-gradient(90deg,var(--primary),var(--primary));
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:var(--trans);padding-bottom:2px;
}
.text-link:hover{color:var(--primary);background-size:100% 1px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;padding:64px 0 0;
  min-height:clamp(560px,72vh,760px);
  display:flex;align-items:center;
  background:var(--bg-800);
}
.hero::before{
  content:"";position:absolute;inset:0;
  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:40px 40px;
  mask-image:radial-gradient(circle at 60% 40%,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;width:640px;height:640px;right:-160px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,92,255,.18),transparent 68%);pointer-events:none;
}
.hero-glow{
  position:absolute;width:560px;height:560px;left:-180px;bottom:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,232,196,.16),transparent 68%);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;width:100%}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.hero-tag{
  display:inline-block;font-size:12px;color:var(--primary);border:1px solid rgba(20,232,196,.35);
  background:rgba(20,232,196,.08);padding:5px 14px;border-radius:999px;margin-bottom:20px;letter-spacing:.04em;
}
.hero-title{
  font-size:30px;line-height:1.2;font-weight:800;color:var(--t1);letter-spacing:.01em;margin-bottom:18px;
}
.hero-sub{font-size:16px;color:var(--t2);line-height:1.85;max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{
  font-size:12px;color:var(--t2);padding:5px 12px;border-radius:999px;
  background:rgba(18,28,48,.6);border:1px solid var(--line);
}
.hero-media{position:relative;border-radius:var(--radius-panel);overflow:hidden;box-shadow:var(--shadow-float);border:1px solid var(--line-strong)}
.hero-media::after{
  content:"";position:absolute;inset:0;background:rgba(5,7,14,.18);pointer-events:none;
}
.hero-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;object-position:70% 40%;border-radius:var(--radius-panel)}
.glass-brief{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:3;
  background:rgba(18,28,48,.62);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:16px;padding:16px 18px;
  box-shadow:0 18px 50px rgba(0,0,0,.45);
}
.glass-brief::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:16px 16px 0 0;
  background:var(--grad-line);opacity:.75;
}
.glass-brief-title{font-size:13px;color:var(--t1);font-weight:700;margin-bottom:10px;letter-spacing:.04em}
.glass-brief ul{display:flex;flex-direction:column;gap:7px}
.glass-brief li{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t2);line-height:1.5}
.glass-brief li span{
  font-size:12px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
  border:1px solid rgba(20,232,196,.3);border-radius:6px;padding:1px 6px;flex:none;
}
.metrics{
  margin-top:44px;display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.metric{background:rgba(18,28,48,.6);backdrop-filter:blur(10px);padding:18px 20px}
.metric b{display:block;font-size:26px;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.3;font-weight:800}
.metric span{font-size:13px;color:var(--t3)}
@media(min-width:768px){
  .hero-title{font-size:38px}
  .metrics{grid-template-columns:repeat(4,1fr)}
}
@media(min-width:1024px){
  .hero{padding:72px 0 0}
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px}
  .hero-title{font-size:44px}
}

/* ============ 通用板块 ============ */
.section{padding:64px 0;position:relative}
@media(min-width:1024px){.section{padding:96px 0}}
.section-alt{background:var(--bg-700)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--primary);
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--grad-line);border-radius:2px}
.section-title{font-size:24px;font-weight:700;color:var(--t1);line-height:1.3;letter-spacing:.01em}
@media(min-width:1024px){.section-title{font-size:30px}}
.section-desc{font-size:15px;color:var(--t2);max-width:620px;margin-top:12px;line-height:1.85}
.divider-grad{height:2px;width:96px;background:var(--grad-line);border-radius:2px;margin:20px 0 0}

/* ============ 三步上手 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:28px;position:relative}
.step{
  position:relative;background:rgba(18,28,48,.55);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-card);transition:var(--trans);
}
.step::before{
  content:"";position:absolute;left:26px;right:26px;top:0;height:1px;
  background:var(--grad-line);opacity:.65;border-radius:2px;
}
.step:hover{transform:translateY(-4px);border-color:rgba(20,232,196,.35)}
.step-num{font-size:36px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:14px}
.step-title{font-size:18px;font-weight:600;color:var(--t1);margin-bottom:8px}
.step-text{font-size:14px;color:var(--t2);line-height:1.8;margin-bottom:16px}
.step-shot{border-radius:14px;overflow:hidden;border:1px solid var(--line);position:relative}
.step-shot img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media(min-width:1024px){
  .steps{grid-template-columns:repeat(3,1fr);gap:40px}
  .steps::before{
    content:"";position:absolute;top:64px;left:8%;right:8%;height:1px;
    background-image:linear-gradient(90deg,rgba(20,232,196,.5) 50%,transparent 0);
    background-size:12px 1px;background-repeat:repeat-x;
  }
}

/* ============ 要点两栏 ============ */
.split{display:grid;grid-template-columns:1fr;gap:28px}
.panel{
  background:rgba(18,28,48,.55);backdrop-filter:blur(14px);border:1px solid var(--line);
  border-radius:var(--radius-panel);padding:26px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;
}
.panel::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line);opacity:.6}
.panel h3{font-size:20px;font-weight:600;color:var(--t1);margin-bottom:14px}
.check-list{display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--t2);line-height:1.8}
.check-list li i{
  flex:none;width:22px;height:22px;border-radius:6px;border:1px solid rgba(20,232,196,.4);
  color:var(--primary);font-size:12px;font-style:normal;display:flex;align-items:center;justify-content:center;margin-top:4px;
}
.mini-tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;border:1px solid rgba(122,92,255,.4);color:#B9A8FF;background:rgba(122,92,255,.1);margin-bottom:14px}
@media(min-width:1024px){.split{grid-template-columns:5fr 7fr;gap:32px}}

/* ============ 场景证明 ============ */
.case-grid{display:grid;grid-template-columns:1fr;gap:26px}
.case{
  display:grid;grid-template-columns:1fr;gap:0;background:rgba(18,28,48,.55);
  backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius-panel);
  overflow:hidden;box-shadow:var(--shadow-card);transition:var(--trans);
}
.case:hover{transform:translateY(-4px);border-color:rgba(20,232,196,.35)}
.case-img{position:relative;overflow:hidden}
.case-img img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 260ms cubic-bezier(.2,.7,.3,1)}
.case:hover .case-img img{transform:scale(1.04)}
.case-img::after{content:"";position:absolute;inset:0;background:rgba(5,7,14,.18);pointer-events:none}
.case-body{padding:24px 26px}
.case-body h3{font-size:19px;font-weight:600;color:var(--t1);margin:10px 0 10px;line-height:1.5}
.case-body p{font-size:14px;line-height:1.85}
.case-nums{display:flex;gap:26px;margin:18px 0 16px;flex-wrap:wrap}
.case-nums b{display:block;font-size:28px;color:var(--primary);font-variant-numeric:tabular-nums;font-weight:800;line-height:1.2}
.case-nums span{font-size:13px;color:var(--t3)}
.case-bar{
  display:flex;flex-wrap:wrap;gap:18px;align-items:center;background:rgba(18,28,48,.55);
  backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--radius-panel);
  padding:24px 26px;box-shadow:var(--shadow-card);
}
.case-bar .cb-ico{
  width:52px;height:52px;border-radius:14px;flex:none;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(20,232,196,.2),rgba(122,92,255,.2));
  border:1px solid rgba(20,232,196,.3);color:var(--primary);font-weight:800;font-variant-numeric:tabular-nums;
}
.case-bar .cb-txt{flex:1;min-width:220px}
.case-bar h3{font-size:18px;color:var(--t1);font-weight:600;margin-bottom:6px}
.case-bar p{font-size:14px;line-height:1.8}
@media(min-width:1024px){
  .case-grid{grid-template-columns:1fr 1fr;gap:32px;align-items:start}
  .case-grid > *:nth-child(1){transform:translateY(0)}
  .case-grid > *:nth-child(2){transform:translateY(40px)}
  .case{grid-template-columns:4fr 6fr}
}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
.post-card{
  display:flex;flex-direction:column;background:rgba(18,28,48,.55);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:var(--trans);height:100%;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(20,232,196,.35)}
.post-thumb{position:relative;overflow:hidden}
.post-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 260ms cubic-bezier(.2,.7,.3,1)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-thumb::after{content:"";position:absolute;inset:0;background:rgba(5,7,14,.18);pointer-events:none}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge-cat{
  align-self:flex-start;font-size:12px;padding:3px 10px;border-radius:999px;
  border:1px solid rgba(122,92,255,.42);color:#B9A8FF;background:rgba(122,92,255,.1);
}
.post-title{font-size:17px;font-weight:600;color:var(--t1);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--primary)}
.post-sum{font-size:14px;color:var(--t2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}
.post-card-lead .post-title{font-size:20px}
.post-card-lead .post-thumb img{aspect-ratio:16/10}
.news-side{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:640px){.news-side{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){
  .news-grid{grid-template-columns:5fr 7fr;gap:28px}
  .news-side{gap:24px}
}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:rgba(18,28,48,.5);backdrop-filter:blur(12px);border:1px dashed var(--line-strong);
  border-radius:var(--radius-panel);text-align:center;padding:40px 24px;
}
.empty-state .empty-ico{
  width:54px;height:54px;border-radius:16px;border:1px solid rgba(20,232,196,.32);
  display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:22px;
}
.empty-state p{font-size:14px;color:var(--t2)}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:32px}
.faq-side h2{font-size:24px;color:var(--t1);font-weight:700;margin-bottom:14px;line-height:1.35}
.faq-side p{font-size:15px;line-height:1.85;margin-bottom:22px}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:rgba(18,28,48,.55);backdrop-filter:blur(14px);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;transition:var(--trans);
}
.faq-item:hover{border-color:rgba(20,232,196,.3)}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  padding:18px 22px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  color:var(--t1);font-size:16px;font-weight:600;line-height:1.65;min-height:56px;
}
.faq-q .ico{
  flex:none;width:24px;height:24px;border-radius:8px;border:1px solid rgba(20,232,196,.35);
  color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:15px;
  transition:transform 240ms cubic-bezier(.2,.7,.3,1);margin-top:2px;
}
.faq-item.is-open .faq-q .ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 240ms cubic-bezier(.2,.7,.3,1),opacity 240ms;opacity:0}
.faq-item.is-open .faq-a{opacity:1}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--t2)}
.faq-item h3{margin:0}
@media(min-width:1024px){
  .faq-wrap{grid-template-columns:4fr 8fr;gap:40px}
  .faq-side{position:sticky;top:110px;align-self:start}
}

/* ============ CTA ============ */
.cta-panel{
  position:relative;border-radius:var(--radius-panel);padding:44px 26px;overflow:hidden;
  background:radial-gradient(circle at 20% 10%,rgba(20,232,196,.18),transparent 55%),
             radial-gradient(circle at 85% 90%,rgba(122,92,255,.2),transparent 55%),
             rgba(10,16,32,.9);
  border:1px solid rgba(20,232,196,.28);
  box-shadow:0 30px 90px rgba(20,232,196,.14);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius-panel);padding:1px;
  background:linear-gradient(120deg,rgba(20,232,196,.7),rgba(122,92,255,.7));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px}
.cta-copy h2{font-size:26px;color:var(--t1);font-weight:700;line-height:1.35;margin-bottom:14px}
.cta-copy p{font-size:15px;line-height:1.85;margin-bottom:22px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:18px}
.cta-trust{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--t3)}
.cta-trust li{display:flex;align-items:center;gap:6px}
.cta-trust li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--primary)}
.form-panel{
  background:rgba(5,7,14,.6);backdrop-filter:blur(14px);border:1px solid var(--line-strong);
  border-radius:var(--radius-card);padding:24px;
}
.form-row{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--t3);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:rgba(5,7,14,.6);border:1px solid var(--line-strong);border-radius:12px;
  padding:12px 14px;font-size:15px;color:var(--t1);outline:none;transition:var(--trans);
}
.field textarea{resize:vertical;min-height:90px}
.field input::placeholder,.field textarea::placeholder{color:var(--t3)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(20,232,196,.12);
}
.field.has-error input{border-color:var(--warn);box-shadow:0 0 0 4px rgba(255,177,61,.12)}
.field .err{display:none;font-size:12px;color:var(--warn);margin-top:6px}
.field.has-error .err{display:block}
.form-note{font-size:12px;color:var(--t3);margin-top:12px;line-height:1.7}
.spinner{
  width:15px;height:15px;border-radius:50%;border:2px solid rgba(4,33,28,.35);
  border-top-color:#04211C;animation:spin .7s linear infinite;display:inline-block;
}
@keyframes spin{to{transform:rotate(360deg)}}
@media(min-width:768px){.form-row{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){
  .cta-panel{padding:56px 48px}
  .cta-grid{grid-template-columns:6fr 6fr;gap:48px;align-items:start}
  .cta-copy h2{font-size:30px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-900);position:relative;padding:56px 0 0;margin-top:0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line);opacity:.85}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:40px 40px;mask-image:radial-gradient(circle at 50% 0%,#000,transparent 70%);
}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:32px}
.footer-col h4{
  font-size:14px;color:var(--t1);font-weight:700;margin-bottom:16px;padding-bottom:10px;position:relative;
}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:1px;background:var(--primary);opacity:.8}
.footer-col p{font-size:14px;line-height:1.85;color:var(--t2)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:var(--t2);
  background-image:linear-gradient(90deg,var(--primary),var(--primary));
  background-size:0% 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:var(--trans);width:fit-content;padding-bottom:2px;
}
.footer-links a:hover{color:var(--primary);background-size:100% 1px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-bottom{
  position:relative;z-index:2;margin-top:44px;border-top:1px solid var(--line);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
.footer-domain{font-variant-numeric:tabular-nums;letter-spacing:.02em}
@media(min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}}

/* ============ 图片兜底 ============ */
.img-fallback{
  position:relative;background:rgba(18,28,48,.6);display:flex;align-items:center;justify-content:center;
}
.img-fallback::after{
  content:attr(data-fallback);font-size:26px;font-weight:800;color:rgba(20,232,196,.5);
  letter-spacing:.1em;
}

/* roulang page: article */
:root{
  --bg-900:#05070E;
  --bg-800:#0A1020;
  --bg-700:#101A30;
  --primary:#14E8C4;
  --primary-deep:#0E9C86;
  --accent:#7A5CFF;
  --warn:#FFB13D;
  --t1:#EAF2FF;
  --t2:#9FB2CC;
  --t3:#6B7F9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.45);
  --shadow-float:0 28px 80px rgba(0,0,0,.6);
  --shadow-glow:0 8px 28px rgba(20,232,196,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-800);
  color:var(--t2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(20,232,196,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-900)}
::-webkit-scrollbar-thumb{background:rgba(20,232,196,.28);border-radius:99px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,232,196,.45)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ============ 顶部信息条 ============ */
.topbar{
  height:36px;
  background:rgba(10,16,32,.9);
  border-bottom:1px solid transparent;
  border-image:linear-gradient(90deg,#14E8C4,#7A5CFF) 1;
  display:flex;
  align-items:center;
  position:relative;
  z-index:2;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:100%}
.topbar-left{font-size:12px;color:var(--t3);letter-spacing:.04em;font-variant-numeric:tabular-nums}
.topbar-mid{font-size:12px;color:var(--t2);flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-link{font-size:12px;color:var(--t3)}
.topbar-link:hover{color:var(--primary)}
.topbar-btn{
  font-size:12px;font-weight:600;color:#04140F;
  background:var(--primary);
  padding:4px 12px;border-radius:99px;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.topbar-btn:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(20,232,196,.4)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,7,14,0);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{
  background:rgba(5,7,14,.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 0 var(--line),0 14px 40px rgba(0,0,0,.45);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:74px}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#04140F;
  background:linear-gradient(135deg,#14E8C4,#7A5CFF);
  border-radius:12px;
  box-shadow:0 8px 22px rgba(20,232,196,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-name{font-size:16px;font-weight:800;color:var(--t1);letter-spacing:.01em}
.logo-sub{font-size:11px;color:var(--t3);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  font-size:15px;color:var(--t2);
  padding:9px 12px;border-radius:10px;
  white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
  box-shadow:0 6px 14px rgba(20,232,196,.5);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.burger{
  display:none;width:44px;height:44px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-strong);
  border-radius:12px;cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-header.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .burger span:nth-child(2){opacity:0}
.site-header.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{
  background:var(--primary);color:#04140F;
  box-shadow:var(--shadow-glow),inset 0 1px 0 rgba(255,255,255,.25);
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.btn-primary:hover{background:#31F0D0;transform:translateY(-2px);box-shadow:0 14px 34px rgba(20,232,196,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.25)}
.btn-ghost{
  background:rgba(18,28,48,.5);
  border-color:rgba(255,255,255,.16);
  color:var(--t1);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn:focus-visible,.nav-link:focus-visible,.text-link:focus-visible,.footer-links a:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--t2);font-size:15px;
  background-image:linear-gradient(var(--primary),var(--primary));
  background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;
  padding-bottom:3px;
  transition:color .18s var(--ease),background-size .2s var(--ease);
}
.text-link:hover{color:var(--primary);background-size:100% 1px}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;
  padding:7px 12px;border-radius:999px;
  border:1px solid transparent;white-space:nowrap;
}
.badge-cat{background:rgba(122,92,255,.12);border-color:rgba(122,92,255,.45);color:#B9A9FF}
.badge-soft{background:rgba(20,232,196,.08);border-color:rgba(20,232,196,.3);color:var(--primary)}
.badge-warn{background:rgba(255,177,61,.1);border-color:rgba(255,177,61,.4);color:var(--warn)}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;align-items:center;gap:10px;
  padding-top:26px;padding-bottom:4px;
  font-size:13px;color:var(--t3);
  overflow:hidden;
}
.crumbs a{color:var(--t3)}
.crumbs a:hover{color:var(--primary)}
.crumb-sep{color:rgba(255,255,255,.18)}
.crumb-current{color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:46ch}

/* ============ 文章头 ============ */
.article-head{position:relative;padding:22px 0 34px;overflow:hidden}
.article-head::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:420px;
  background:
    radial-gradient(420px 260px at 18% 40%,rgba(20,232,196,.16),transparent 70%),
    radial-gradient(420px 260px at 78% 20%,rgba(122,92,255,.16),transparent 70%);
  pointer-events:none;
}
.article-head-inner{position:relative;max-width:900px}
.article-title{
  margin:18px 0 0;
  font-size:34px;line-height:1.3;font-weight:800;color:var(--t1);
  letter-spacing:.01em;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.dot-sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2)}
.grad-line{
  display:block;width:104px;height:2px;margin-top:22px;border-radius:2px;
  background:linear-gradient(90deg,#14E8C4,#7A5CFF);
}

/* ============ 正文布局 ============ */
.article-main{padding:10px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 258px;gap:56px;align-items:start}
.article-body{
  max-width:780px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--t2);
}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:22px;font-weight:700;line-height:1.45;color:var(--t1);
  margin:44px 0 18px;padding-left:14px;border-left:4px solid var(--primary);
  scroll-margin-top:100px;
}
.article-body h3{
  font-size:19px;font-weight:600;line-height:1.5;color:var(--t1);
  margin:32px 0 14px;scroll-margin-top:100px;
}
.article-body h4{font-size:17px;font-weight:600;color:var(--t1);margin:24px 0 12px}
.article-body strong{color:var(--t1);font-weight:600}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(20,232,196,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body ul,.article-body ol{margin:0 0 22px;list-style:none}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul>li::before{
  content:"";position:absolute;left:3px;top:.75em;
  width:7px;height:7px;border-radius:2px;background:var(--primary);
}
.article-body ol{counter-reset:cmsitem}
.article-body ol>li{counter-increment:cmsitem;padding-left:26px}
.article-body ol>li::before{
  content:counter(cmsitem) ".";position:absolute;left:0;top:0;
  color:var(--primary);font-weight:700;font-size:15px;line-height:1.9;
}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;
  background:rgba(18,28,48,.55);
  border-left:3px solid var(--accent);
  border-radius:0 14px 14px 0;
  color:var(--t1);font-size:16px;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px 0;border:1px solid var(--line)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:10px}
.article-body table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;margin:24px 0;font-size:15px;
  border-top:1px solid rgba(20,232,196,.4);
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;
}
.article-body thead th{color:var(--t1);background:rgba(20,232,196,.06);font-weight:600}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body code{
  font-size:14px;padding:2px 7px;border-radius:6px;
  background:rgba(20,232,196,.1);color:var(--primary);
}
.article-body hr{border:0;height:1px;background:var(--line);margin:36px 0}

.empty-state{
  padding:52px 34px;text-align:center;
  background:rgba(18,28,48,.55);
  border:1px solid var(--line);border-radius:var(--radius-panel);
  box-shadow:var(--shadow-card);
}
.empty-state h2{
  border:0;padding:0;margin:0 0 14px;font-size:24px;color:var(--t1);text-align:center;
}
.empty-state p{margin:0 auto 24px;max-width:520px;font-size:15px;color:var(--t2)}

/* ============ 文末 ============ */
.article-foot{
  margin-top:52px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:18px}
.aside-card{
  background:rgba(18,28,48,.55);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 18px 16px;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.aside-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(20,232,196,.8),rgba(122,92,255,.6),transparent);
}
.aside-title{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:12px;letter-spacing:.02em}
.aside-toc{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow:auto}
.aside-toc a{
  display:block;font-size:13px;line-height:1.6;color:var(--t3);
  padding:7px 10px;border-radius:8px;border-left:2px solid transparent;
}
.aside-toc a:hover{color:var(--primary);background:rgba(20,232,196,.06);border-left-color:rgba(20,232,196,.5)}
.aside-toc a.is-current{color:var(--t1);background:rgba(20,232,196,.08);border-left-color:var(--primary)}
.toc-empty{font-size:13px;color:var(--t3);line-height:1.7}
.aside-links{display:flex;flex-direction:column;gap:2px}
.aside-links a{
  font-size:14px;color:var(--t2);padding:8px 10px;border-radius:9px;
  display:flex;align-items:center;justify-content:space-between;gap:8px;
}
.aside-links a::after{content:"›";color:var(--t3);font-size:16px;line-height:1}
.aside-links a:hover{color:var(--primary);background:rgba(20,232,196,.07)}
.aside-links a:hover::after{color:var(--primary)}

/* ============ 相关内容 ============ */
.related{padding:8px 0 80px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.related-head h2{font-size:24px;font-weight:700;color:var(--t1);letter-spacing:.01em}
.related-head p{font-size:14px;color:var(--t3);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:block;
  background:rgba(18,28,48,.55);
  border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;
  backdrop-filter:blur(14px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(20,232,196,.35);box-shadow:0 22px 54px rgba(0,0,0,.5)}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:14px 14px 0 0;background:var(--bg-700)}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card-thumb::after{content:"";position:absolute;inset:0;background:rgba(5,7,14,.18)}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55;color:var(--t1);margin:12px 0 10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;line-height:1.8;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:14px;font-size:13px;color:var(--t3);display:flex;align-items:center;gap:8px;font-variant-numeric:tabular-nums}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:var(--bg-900);
  padding:64px 0 28px;
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,#14E8C4,#7A5CFF) 1;
}
.site-footer::before{
  content:"";position:absolute;inset: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:40px 40px;
  mask-image:radial-gradient(600px 300px at 50% 0%,#000,transparent 80%);
  -webkit-mask-image:radial-gradient(600px 300px at 50% 0%,#000,transparent 80%);
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.9;color:var(--t2);max-width:340px}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;
  padding-bottom:10px;position:relative;
}
.footer-col h4::after{
  content:"";position:absolute;left:0;bottom:0;width:28px;height:1px;
  background:linear-gradient(90deg,#14E8C4,transparent);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14px;color:var(--t2);width:fit-content;
  background-image:linear-gradient(var(--primary),var(--primary));
  background-repeat:no-repeat;background-size:0% 1px;background-position:0 100%;
  padding-bottom:2px;
  transition:color .18s var(--ease),background-size .2s var(--ease);
}
.footer-links a:hover{color:var(--primary);background-size:100% 1px}
.footer-bottom{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.footer-domain{color:var(--t3);letter-spacing:.04em;font-variant-numeric:tabular-nums}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-links{gap:0}
  .nav-link{padding:9px 9px;font-size:14px}
  .logo-name{font-size:15px}
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .article-body{max-width:760px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .nav-inner{height:66px}
  .burger{display:flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:82vw;max-width:340px;
    background:rgba(8,12,24,.97);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:88px 22px 26px;
    transform:translateX(100%);
    transition:transform .28s var(--ease);
    z-index:60;overflow:auto;
  }
  .site-header.nav-open{background:rgba(5,7,14,.85);backdrop-filter:blur(12px)}
  .site-header.nav-open .nav-links{transform:translateX(0)}
  .site-header.nav-open::after{
    content:"";position:fixed;inset:0;background:rgba(3,6,14,.62);z-index:55;
  }
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:rgba(20,232,196,.09);color:var(--primary)}
  #navCta{display:none}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .topbar{height:32px}
  .topbar-mid{display:none}
  .article-title{font-size:26px}
  .article-head{padding:16px 0 26px}
  .article-body h2{font-size:20px;margin-top:36px}
  .article-body h3{font-size:18px;margin-top:26px}
  .related-head{flex-direction:column;align-items:flex-start;gap:6px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:34px}
  .site-footer{padding:48px 0 24px}
  .article-main{padding-bottom:56px}
  .related{padding-bottom:56px}
}
@media (max-width:520px){
  .article-title{font-size:24px}
  .crumb-current{max-width:24ch}
  .btn{width:100%}
  .article-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bg-900:#05070E;
  --bg-800:#0A1020;
  --bg-700:#101A30;
  --primary:#14E8C4;
  --primary-deep:#0E9C86;
  --accent:#7A5CFF;
  --warn:#FFB13D;
  --t1:#EAF2FF;
  --t2:#9FB2CC;
  --t3:#6B7F9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --grad:linear-gradient(90deg,#14E8C4,#7A5CFF);
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.45);
  --shadow-float:0 28px 80px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
.page-body{
  margin:0;
  min-height:100vh;
  background-color:var(--bg-800);
  background-image:
    radial-gradient(900px 520px at 10% -6%,rgba(20,232,196,.09),transparent 62%),
    radial-gradient(820px 500px at 94% 6%,rgba(122,92,255,.11),transparent 64%);
  background-repeat:no-repeat;
  color:var(--t2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
}
.page-body img{max-width:100%;display:block;border-radius:14px}
.page-body a{color:inherit}
::selection{background:rgba(20,232,196,.28);color:#04140F}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070B16}
::-webkit-scrollbar-thumb{background:rgba(20,232,196,.26);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,232,196,.44)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1280px){.container{max-width:1280px}}

/* ============ 顶部信息条 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(5,7,14,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s var(--ease),border-color .25s var(--ease)}
.site-header.is-scrolled{background:rgba(5,7,14,.92);border-bottom-color:var(--line)}
.topbar{position:relative;background:rgba(10,16,32,.9);height:36px;font-size:12px;overflow:hidden}
.topbar::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,rgba(20,232,196,.85),rgba(122,92,255,.7),transparent 80%)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-left{color:var(--t3);white-space:nowrap;font-variant-numeric:tabular-nums}
.topbar-mid{color:var(--t2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topbar-right{display:flex;align-items:center;gap:12px;white-space:nowrap}
.topbar-link{color:var(--t2);text-decoration:none;transition:color .18s var(--ease)}
.topbar-link:hover{color:var(--primary)}
.topbar-btn{color:#04140F;background:var(--primary);border-radius:999px;padding:3px 12px;text-decoration:none;font-weight:600;transition:filter .18s var(--ease)}
.topbar-btn:hover{filter:brightness(1.08)}

/* ============ 主导航 ============ */
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;height:74px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;flex:0 0 auto}
.logo-mark{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-size:19px;font-weight:800;color:#04140F;background:linear-gradient(135deg,#14E8C4,#7A5CFF);box-shadow:0 8px 22px rgba(20,232,196,.28)}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-name{color:var(--t1);font-size:15px;font-weight:700;letter-spacing:.01em}
.logo-sub{color:var(--t3);font-size:11px;font-variant-numeric:tabular-nums}
.nav-links{display:flex;align-items:center;gap:24px}
.nav-link{position:relative;color:var(--t2);font-size:15px;text-decoration:none;padding:8px 0;transition:color .18s var(--ease)}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:rgba(20,232,196,.5)}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--grad);box-shadow:0 6px 14px rgba(20,232,196,.5)}
.nav-actions{display:flex;align-items:center;gap:12px}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(18,28,48,.6);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .18s var(--ease)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1)}
.burger:hover{border-color:rgba(20,232,196,.5)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 24px;font-size:15px;font-weight:600;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;text-decoration:none;font-family:inherit;transition:transform .18s var(--ease),filter .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);position:relative}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:0 8px 28px rgba(20,232,196,.35),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 34px rgba(20,232,196,.45),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.25)}
.btn-ghost{background:rgba(18,28,48,.55);border-color:rgba(255,255,255,.16);color:var(--t1);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}
.link-more{color:var(--t2);font-size:14px;text-decoration:none;background-image:linear-gradient(var(--primary),var(--primary));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;padding-bottom:3px;transition:color .2s var(--ease),background-size .2s var(--ease)}
.link-more:hover{color:var(--primary);background-size:100% 1px}

/* ============ 面包屑 ============ */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--t3)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0}
.breadcrumb a{color:var(--t3);text-decoration:none;transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--t1)}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;overflow:hidden;padding:64px 0 84px;text-align:center}
.cat-hero-bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.34;z-index:0}
.cat-hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,.74),rgba(5,7,14,.93) 78%,var(--bg-800));z-index:1}
.cat-hero-grid{position:absolute;inset:0;z-index:1;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:40px 40px;mask-image:radial-gradient(600px 380px at 50% 30%,#000,transparent)}
.cat-hero .container{position:relative;z-index:2}
.hero-h1{font-size:44px;line-height:1.2;font-weight:800;color:var(--t1);margin:0 0 18px;letter-spacing:0}
.hero-sub{font-size:17px;color:var(--t2);max-width:720px;margin:0 auto 26px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.glow-line{width:96px;height:2px;border-radius:2px;background:var(--grad);box-shadow:0 0 18px rgba(20,232,196,.5);margin:0 auto 22px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:30px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:5px 12px;border-radius:999px;border:1px solid var(--line-strong);background:rgba(18,28,48,.55);color:var(--t2);line-height:1.6}
.badge-cyan{border-color:rgba(20,232,196,.4);color:var(--primary)}
.badge-violet{border-color:rgba(122,92,255,.45);color:#B7A6FF}
.badge-warn{border-color:rgba(255,177,61,.45);color:var(--warn)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:linear-gradient(180deg,rgba(16,26,48,.55),rgba(10,16,32,0))}
.section-head{max-width:780px;margin-bottom:8px}
.h2{font-size:30px;line-height:1.3;font-weight:700;color:var(--t1);margin:0 0 14px}
.h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--t1);margin:0 0 10px}
.lead{font-size:16px;color:var(--t2);margin:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--primary);letter-spacing:.06em;margin-bottom:14px}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--grad)}
.section-divider{height:1px;background:linear-gradient(90deg,rgba(20,232,196,.6),rgba(122,92,255,.35),transparent);width:120px;margin:0 0 28px}

/* ============ 玻璃卡 ============ */
.glass{position:relative;background:rgba(18,28,48,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.glass::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:inherit;background:linear-gradient(90deg,rgba(20,232,196,.7),rgba(122,92,255,.45),transparent)}

/* ============ 准备清单 ============ */
.prep{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin-top:44px}
.prep-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);background:rgba(18,28,48,.5)}
.prep-media img{width:100%;height:340px;object-fit:cover;border-radius:0;opacity:.94}
.prep-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,7,14,.1),rgba(5,7,14,.5));pointer-events:none}
.prep-media-tag{position:absolute;left:18px;bottom:18px;z-index:2}
.prep-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.prep-list li{display:flex;gap:14px;padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:rgba(18,28,48,.4);transition:border-color .18s var(--ease),transform .18s var(--ease)}
.prep-list li:hover{border-color:rgba(20,232,196,.32);transform:translateX(3px)}
.prep-index{flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--primary);background:rgba(20,232,196,.1);border:1px solid rgba(20,232,196,.3);font-variant-numeric:tabular-nums}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:48px}
.tl-item{position:relative;padding:0 0 34px 86px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:23px;top:56px;bottom:6px;width:1px;background:linear-gradient(180deg,rgba(20,232,196,.45),rgba(122,92,255,.12))}
.tl-item:last-child::before{display:none}
.tl-num{position:absolute;left:0;top:0;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-size:17px;font-weight:700;color:var(--primary);background:rgba(14,22,40,.9);border:1px solid rgba(20,232,196,.3);box-shadow:0 10px 26px rgba(0,0,0,.4);font-variant-numeric:tabular-nums}
.tl-card{padding:24px 26px}
.tl-card p{margin:0;font-size:16px;color:var(--t2);line-height:1.9}

/* ============ 对照清单 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px}
.compare-panel{padding:30px 28px;border-radius:var(--r-panel);border:1px solid var(--line);background:rgba(16,26,48,.5);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);box-shadow:var(--shadow-card)}
.compare-panel.is-good{border-color:rgba(20,232,196,.3)}
.compare-panel.is-bad{border-color:rgba(255,177,61,.26)}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.compare-head h3{margin:0;font-size:20px;font-weight:600;color:var(--t1)}
.compare-list{list-style:none;margin:0;padding:0}
.compare-list li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.07);font-size:16px;color:var(--t2);line-height:1.8}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.mark{flex:0 0 auto;width:22px;height:22px;border-radius:7px;display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:3px}
.mark-ok{color:var(--primary);background:rgba(20,232,196,.12);border:1px solid rgba(20,232,196,.4)}
.mark-no{color:var(--warn);background:rgba(255,177,61,.12);border:1px solid rgba(255,177,61,.4)}

/* ============ 排查表 ============ */
.check-table{margin-top:44px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:rgba(10,16,32,.55)}
.check-row{display:grid;grid-template-columns:minmax(200px,1fr) 2fr;gap:22px;padding:18px 26px;border-bottom:1px solid rgba(255,255,255,.06);font-size:16px;line-height:1.8}
.check-row:last-child{border-bottom:0}
.check-row:nth-child(odd){background:rgba(255,255,255,.015)}
.check-row.head{background:linear-gradient(90deg,rgba(20,232,196,.1),rgba(122,92,255,.06));border-top:2px solid var(--primary);border-bottom-color:rgba(255,255,255,.1);color:var(--t1);font-weight:600;font-size:14px;letter-spacing:.04em}
.col-a{color:var(--t1);font-weight:600}
.col-b{color:var(--t2);font-weight:400}

/* ============ CTA 面板 ============ */
.cta-panel{position:relative;overflow:hidden;border-radius:var(--r-panel);padding:56px 46px;border:1px solid rgba(20,232,196,.28);background:
  radial-gradient(620px 320px at 16% -10%,rgba(20,232,196,.2),transparent 62%),
  radial-gradient(620px 340px at 88% 110%,rgba(122,92,255,.22),transparent 64%),
  rgba(12,20,38,.92);
  box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06)}
.cta-panel::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad);opacity:.9}
.cta-inner{position:relative;z-index:2}
.cta-h2{font-size:32px;line-height:1.3;font-weight:800;color:var(--t1);margin:0 0 14px}
.cta-p{font-size:16px;color:var(--t2);margin:0 0 26px;max-width:640px}
.trust-row{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;font-size:13px;color:var(--t3)}
.trust-row span{display:inline-flex;align-items:center;gap:7px}
.trust-dot{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(20,232,196,.8)}

/* ============ 表单 ============ */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--t3);letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:rgba(5,7,14,.6);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;color:var(--t1);font-size:15px;font-family:inherit;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--t3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(20,232,196,.12)}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t3) 50%),linear-gradient(135deg,var(--t3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(4,20,15,.35);border-top-color:#04140F;animation:spin .7s linear infinite;display:none}
@keyframes spin{to{transform:rotate(360deg)}}
.form-note{font-size:13px;color:var(--t3);margin:0}
.form-msg{display:none;margin-top:16px;font-size:14px;color:var(--primary)}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-900);padding:68px 0 28px;margin-top:0;background-image:
  linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px),
  radial-gradient(520px 300px at 8% 0%,rgba(20,232,196,.09),transparent 62%),
  radial-gradient(520px 300px at 92% 100%,rgba(122,92,255,.09),transparent 62%);
  background-size:40px 40px,40px 40px,auto,auto}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad);opacity:.75}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .logo-name{color:var(--t1)}
.footer-col p{font-size:14px;color:var(--t2);margin:0;line-height:1.9;max-width:340px}
.footer-col h4{position:relative;font-size:14px;font-weight:700;color:var(--t1);margin:0 0 18px;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:1px;background:var(--grad)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{width:fit-content;color:var(--t2);font-size:14px;text-decoration:none;padding-bottom:2px;background-image:linear-gradient(var(--primary),var(--primary));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:color .2s var(--ease),background-size .2s var(--ease)}
.footer-links a:hover{color:var(--primary);background-size:100% 1px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:46px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--t3)}
.footer-domain{font-variant-numeric:tabular-nums}

/* ============ 移动端抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(5,7,14,.62);opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:70}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;z-index:80;transform:translateX(102%);transition:transform .3s var(--ease);background:rgba(8,13,26,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-left:1px solid var(--line);padding:26px 22px 30px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-title{font-size:13px;color:var(--t3);letter-spacing:.08em;margin-bottom:10px}
.drawer a{display:flex;align-items:center;min-height:46px;padding:10px 8px;border-radius:12px;color:var(--t2);text-decoration:none;font-size:16px;transition:background .18s var(--ease),color .18s var(--ease)}
.drawer a:hover,.drawer a.active{background:rgba(20,232,196,.08);color:var(--t1)}
.drawer a.active{border-left:2px solid var(--primary);padding-left:14px}
.drawer-cta{margin-top:auto;padding-top:20px;border-top:1px solid var(--line)}
.drawer-cta .btn{width:100%}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav-links{display:none}
  .burger{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .prep{grid-template-columns:1fr;gap:26px}
  .prep-media img{height:280px}
  .compare{grid-template-columns:1fr}
  .cta-h2{font-size:26px}
}
@media (max-width:768px){
  .section{padding:70px 0}
  .cat-hero{padding:44px 0 66px}
  .hero-h1{font-size:32px}
  .hero-sub{font-size:16px}
  .h2{font-size:24px}
  .cta-panel{padding:40px 24px}
  .form-grid{grid-template-columns:1fr}
  .check-row{grid-template-columns:1fr;gap:8px;padding:16px 18px}
  .check-row.head{display:none}
  .check-row .col-a::before{content:"现象 · ";color:var(--t3);font-weight:400;font-size:13px}
  .check-row .col-b::before{content:"处理方向 · ";color:var(--t3);font-size:13px}
  .check-row .col-a{padding-bottom:2px;border-bottom:1px dashed rgba(255,255,255,.08)}
}
@media (max-width:640px){
  .page-body{font-size:16px}
  .topbar{height:32px}
  .topbar-inner{height:32px}
  .topbar-mid{display:none}
  .nav-inner{height:64px}
  .logo-name{font-size:14px}
  .logo-mark{width:36px;height:36px;font-size:17px;border-radius:11px}
  .hero-h1{font-size:30px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .tl-item{padding-left:64px}
  .tl-num{width:40px;height:40px;font-size:15px;border-radius:12px}
  .tl-item::before{left:19px;top:48px}
  .tl-card{padding:20px}
  .compare-panel{padding:24px 20px}
  .btn{width:100%}
  .hero-badges .badge{font-size:11px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-h2{font-size:23px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-h1{font-size:27px}
  .prep-media img{height:230px}
  .trust-row{gap:12px}
}

/* roulang page: category2 */
:root{
  --bg-900:#05070E;
  --bg-800:#0A1020;
  --bg-700:#101A30;
  --primary:#14E8C4;
  --primary-deep:#0E9C86;
  --accent:#7A5CFF;
  --warn:#FFB13D;
  --t1:#EAF2FF;
  --t2:#9FB2CC;
  --t3:#6B7F9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --card-bg:rgba(18,28,48,.55);
  --radius-card:18px;
  --radius-panel:24px;
  --radius-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.45);
  --shadow-pop:0 28px 80px rgba(0,0,0,.6);
  --glow:0 8px 28px rgba(20,232,196,.35);
  --ease:180ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 12% -6%, rgba(20,232,196,.10), transparent 62%),
    radial-gradient(760px 480px at 96% 6%, rgba(122,92,255,.12), transparent 60%),
    var(--bg-800);
  color:var(--t2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit}
::selection{background:rgba(20,232,196,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-900)}
::-webkit-scrollbar-thumb{background:rgba(20,232,196,.28);border-radius:999px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,232,196,.45)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ============ 顶部信息条 ============ */
.site-header{position:sticky;top:0;z-index:50}
.topbar{
  background:rgba(10,16,32,.92);
  border-bottom:1px solid var(--line);
  position:relative;
}
.topbar::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,#14E8C4,#7A5CFF);
  opacity:.7;
}
.topbar-inner{
  height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12px;
}
.topbar-left{color:var(--t3);letter-spacing:.06em}
.topbar-mid{color:var(--t2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--t2)}
.topbar-link:hover{color:var(--primary)}
.topbar-btn{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:rgba(20,232,196,.12);border:1px solid rgba(20,232,196,.42);
  color:var(--primary);font-size:12px;font-weight:600;
}
.topbar-btn:hover{background:rgba(20,232,196,.2)}

/* ============ 主导航 ============ */
.nav-inner{
  height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:rgba(5,7,14,.55);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header.scrolled .nav-inner{background:rgba(5,7,14,.9);box-shadow:0 12px 34px rgba(0,0,0,.45)}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#14E8C4,#7A5CFF);
  color:#05070E;font-weight:800;font-size:19px;flex-shrink:0;
  box-shadow:0 8px 22px rgba(20,232,196,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-name{color:var(--t1);font-size:15px;font-weight:700;letter-spacing:.01em}
.logo-sub{color:var(--t3);font-size:11px;letter-spacing:.04em}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-link{
  position:relative;font-size:15px;color:var(--t2);padding:6px 2px;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1);box-shadow:none}
.nav-link.active{color:var(--t1);font-weight:600}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 6px 14px rgba(20,232,196,.5)}
.nav-actions{display:flex;align-items:center;gap:12px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#24f0d2,#12c9ad);
  color:#04140f;box-shadow:var(--glow),inset 0 1px 0 rgba(255,255,255,.35);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,10px 100%,0 calc(100% - 10px));
  border-radius:0;
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(20,232,196,.45),inset 0 1px 0 rgba(255,255,255,.35);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.25)}
.btn-ghost{
  background:rgba(255,255,255,.03);border:1px solid var(--line-strong);color:var(--t1);
}
.btn-ghost:hover{border-color:rgba(20,232,196,.6);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,.nav-link:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;border-radius:8px;
}
.link-text{
  color:var(--t2);font-size:15px;background-image:linear-gradient(var(--primary),var(--primary));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size var(--ease),color var(--ease);padding-bottom:2px;
}
.link-text:hover{color:var(--primary);background-size:100% 1px}

/* 汉堡 */
.burger{width:44px;height:44px;display:none;place-items:center;border-radius:12px;border:1px solid var(--line-strong);background:rgba(255,255,255,.03)}
.burger span{display:block;width:18px;height:2px;background:var(--t1);margin:3px auto;border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.burger.open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,10,.72);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:80;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:90;
  background:rgba(10,16,32,.96);border-left:1px solid var(--line-strong);
  transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;padding:22px 20px 28px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--t2);font-size:18px}
.drawer-links{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-links a{
  padding:14px 12px;border-radius:12px;font-size:16px;color:var(--t2);border:1px solid transparent;
}
.drawer-links a:hover,.drawer-links a.active{
  color:var(--t1);background:rgba(20,232,196,.08);border-color:rgba(20,232,196,.28);
}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;font-size:13px;color:var(--t3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{margin:0 8px;opacity:.6}
.crumb .current{color:var(--t1)}

/* ============ Hero ============ */
.cat-hero{
  position:relative;margin-top:18px;border-radius:var(--radius-panel);overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(100deg,rgba(5,7,14,.94) 0%,rgba(5,7,14,.78) 46%,rgba(5,7,14,.5) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:left center;
  min-height:340px;
  display:flex;align-items:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:40px 40px;
  mask-image:linear-gradient(105deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(105deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.cat-hero .hero-inner{position:relative;z-index:2;padding:70px 56px;max-width:720px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-cyan{color:var(--primary);border:1px solid rgba(20,232,196,.45);background:rgba(20,232,196,.08)}
.badge-purple{color:#b9a8ff;border:1px solid rgba(122,92,255,.5);background:rgba(122,92,255,.1)}
.badge-warn{color:var(--warn);border:1px solid rgba(255,177,61,.5);background:rgba(255,177,61,.09)}
.cat-hero h1{
  color:var(--t1);font-size:44px;line-height:1.2;font-weight:800;margin:0 0 16px;
}
.hero-underline{width:110px;height:2px;border-radius:2px;background:linear-gradient(90deg,#14E8C4,#7A5CFF);margin:0 0 20px}
.hero-sub{color:var(--t2);font-size:16px;max-width:560px;margin:0 0 26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 板块通用 ============ */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{color:var(--t1);font-size:30px;line-height:1.3;font-weight:700;margin:0 0 12px}
.section-head p{margin:0;color:var(--t2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--primary);margin-bottom:14px;font-weight:700;
}
.eyebrow::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,#14E8C4,#7A5CFF);border-radius:2px}
.glass{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}

/* ============ 两栏 3:9 ============ */
.two-col{display:grid;grid-template-columns:3fr 9fr;gap:32px;align-items:start}
.sticky-card{position:sticky;top:120px;padding:26px 24px}
.sticky-card h3{color:var(--t1);font-size:17px;font-weight:700;margin:0 0 16px}
.point-list{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-direction:column;gap:14px}
.point-list li{
  display:flex;gap:10px;font-size:14px;line-height:1.75;color:var(--t2);
  padding-left:14px;position:relative;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(20,232,196,.6);
}
.article-body{display:flex;flex-direction:column;gap:44px}
.article-block h2{
  color:var(--t1);font-size:24px;font-weight:700;margin:0 0 14px;line-height:1.4;
  display:flex;align-items:baseline;gap:12px;
}
.article-block h2 .num{
  font-size:15px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.article-block p{margin:0 0 14px;font-size:17px;line-height:1.9;color:var(--t2)}
.article-block p:last-child{margin-bottom:0}
.figure{margin:20px 0 0}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line)}
.figure figcaption{font-size:13px;color:var(--t3);margin-top:10px;text-align:center}

/* ============ 安全清单 ============ */
.check-list{display:flex;flex-direction:column;gap:12px;list-style:none;margin:0;padding:0}
.check-item{
  display:flex;gap:14px;align-items:flex-start;
  border-left:3px solid rgba(20,232,196,.55);
  background:rgba(18,28,48,.42);
  border-radius:0 14px 14px 0;
  padding:18px 22px;
  transition:background-color var(--ease),transform var(--ease),border-color var(--ease);
}
.check-item:hover{background:rgba(20,232,196,.09);transform:translateX(4px);border-left-color:var(--primary)}
.check-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:rgba(20,232,196,.14);border:1px solid rgba(20,232,196,.42);color:var(--primary);
  font-size:14px;font-weight:800;line-height:1;margin-top:3px;
}
.check-item strong{display:block;color:var(--t1);font-size:16px;font-weight:600;margin-bottom:4px}
.check-item span{font-size:14px;color:var(--t2)}

/* ============ 提醒面板 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  border:1px solid rgba(255,177,61,.5);
  background:rgba(255,177,61,.07);
  border-radius:var(--radius-card);
  padding:22px 24px;
}
.notice-icon{
  flex-shrink:0;width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  border:1px solid rgba(255,177,61,.55);color:var(--warn);font-weight:800;font-size:16px;
}
.notice p{margin:0;color:#f0dcb8;font-size:15px;line-height:1.85}
.notice strong{color:var(--warn)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{padding:0;overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16px;font-weight:600;color:var(--t1);
}
.faq-q .plus{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--primary);font-size:16px;line-height:1;
  transition:transform var(--ease),border-color var(--ease);
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);border-color:rgba(20,232,196,.55)}
.faq-a{max-height:0;opacity:0;overflow:hidden;transition:max-height 240ms ease,opacity 240ms ease}
.faq-item.open .faq-a{max-height:320px;opacity:1}
.faq-a p{margin:0;padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ============ CTA ============ */
.cta-panel{
  position:relative;border-radius:var(--radius-panel);overflow:hidden;
  padding:56px 48px;text-align:left;
  background:
    radial-gradient(520px 260px at 18% 20%, rgba(20,232,196,.20), transparent 68%),
    radial-gradient(520px 260px at 88% 86%, rgba(122,92,255,.22), transparent 70%),
    rgba(18,28,48,.6);
  border:1px solid rgba(20,232,196,.28);
  box-shadow:0 24px 70px rgba(0,0,0,.5);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-panel);pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(20,232,196,.16);
}
.cta-panel h2{color:var(--t1);font-size:30px;font-weight:800;line-height:1.35;margin:0 0 12px;position:relative;z-index:2}
.cta-panel p{color:var(--t2);font-size:16px;max-width:600px;margin:0 0 28px;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2}
.cta-note{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13px;color:var(--t3);position:relative;z-index:2}
.cta-note span::before{content:"•";color:var(--primary);margin-right:8px}

/* ============ 表格 ============ */
.table-wrap{overflow-x:auto;border-radius:14px;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:560px}
thead th{
  background:rgba(20,232,196,.08);color:var(--t1);font-weight:600;text-align:left;
  padding:14px 18px;border-bottom:1px solid rgba(20,232,196,.28);
}
tbody td{padding:14px 18px;color:var(--t2);border-bottom:1px solid var(--line)}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
tbody tr:last-child td{border-bottom:0}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;position:relative;
  background:var(--bg-900);
  background-image:
    radial-gradient(600px 320px at 8% 0%, rgba(20,232,196,.09), transparent 62%),
    radial-gradient(600px 320px at 92% 10%, rgba(122,92,255,.10), transparent 62%),
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:auto,auto,40px 40px,40px 40px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,#14E8C4,#7A5CFF);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;
  padding:72px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-col h4{
  color:var(--t1);font-size:14px;font-weight:700;margin:0 0 16px;position:relative;padding-bottom:10px;
}
.footer-col h4::after{
  content:"";position:absolute;left:0;bottom:0;width:26px;height:1px;background:linear-gradient(90deg,#14E8C4,#7A5CFF);
}
.footer-col p{margin:0;font-size:14px;color:var(--t2);line-height:1.85;max-width:340px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{
  font-size:14px;color:var(--t2);width:fit-content;
  background-image:linear-gradient(var(--primary),var(--primary));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size var(--ease),color var(--ease);padding-bottom:2px;
}
.footer-links a:hover{color:var(--primary);background-size:100% 1px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;font-size:13px;color:var(--t3);
}
.footer-domain{color:var(--t3);letter-spacing:.05em}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-links{display:none}
  .burger{display:grid}
  .topbar-mid{display:none}
  .two-col{grid-template-columns:1fr;gap:26px}
  .sticky-card{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:56px 0 36px}
  .cat-hero .hero-inner{padding:56px 32px}
  .cat-hero h1{font-size:34px}
  .section{padding:64px 0}
}
@media (max-width:768px){
  body{font-size:16px}
  .cat-hero{min-height:300px;background-position:center}
  .cat-hero .hero-inner{padding:44px 22px;max-width:100%}
  .cat-hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .section-head h2{font-size:24px}
  .cta-panel{padding:38px 22px}
  .cta-panel h2{font-size:24px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-col p{max-width:100%}
  table{min-width:520px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo-name{font-size:14px}
  .logo-mark{width:36px;height:36px;font-size:17px}
  .topbar-inner{font-size:11px}
  .check-item{padding:16px 16px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
}

/* roulang page: category3 */
:root{
  --bg-900:#05070E;
  --bg-800:#0A1020;
  --bg-700:#101A30;
  --primary:#14E8C4;
  --primary-deep:#0E9C86;
  --accent:#7A5CFF;
  --warn:#FFB13D;
  --t1:#EAF2FF;
  --t2:#9FB2CC;
  --t3:#6B7F9B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --grad:linear-gradient(90deg,#14E8C4,#7A5CFF);
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --shadow-card:0 18px 50px rgba(0,0,0,.45);
  --shadow-float:0 28px 80px rgba(0,0,0,.6);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-800);
  color:var(--t2);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--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;color:var(--t1);line-height:1.3;font-weight:700}
p{margin:0}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(20,232,196,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-900)}
::-webkit-scrollbar-thumb{background:rgba(20,232,196,.22);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(20,232,196,.38)}
a:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:8px}

/* ============ 容器 ============ */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}

/* ============ 顶部信息条 ============ */
.topbar{position:relative;background:rgba(10,16,32,.9)}
.topbar::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--grad);opacity:.65}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:36px;font-size:12px}
.topbar-left{color:var(--t3);font-variant-numeric:tabular-nums;white-space:nowrap}
.topbar-mid{color:var(--t2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-link{color:var(--t2)}
.topbar-link:hover{color:var(--primary)}
.topbar-btn{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:8px;font-size:12px;font-weight:600;color:var(--primary);background:rgba(20,232,196,.12);border:1px solid rgba(20,232,196,.4);transition:background .18s var(--ease),color .18s var(--ease)}
.topbar-btn:hover{background:rgba(20,232,196,.22)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:50;background:rgba(5,7,14,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:background .22s var(--ease),box-shadow .22s var(--ease)}
.site-header.is-scrolled{background:rgba(5,7,14,.94);box-shadow:0 14px 34px rgba(0,0,0,.5)}
.nav-inner{display:flex;align-items:center;gap:20px;height:74px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(140deg,#14E8C4,#7A5CFF);color:#04140F;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;box-shadow:0 8px 22px rgba(20,232,196,.28)}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-size:15px;font-weight:700;color:var(--t1);white-space:nowrap}
.logo-sub{font-size:11px;color:var(--t3);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;padding:8px 0;font-size:15px;color:var(--t2);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--t1);font-weight:600}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 6px 14px rgba(20,232,196,.5)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:14px}
.burger{display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(18,28,48,.5)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1)}

/* ============ 移动抽屉 ============ */
.drawer-mask{position:fixed;inset:0;z-index:60;background:rgba(5,7,14,.62);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;z-index:61;width:82vw;max-width:340px;padding:20px;background:rgba(10,16,32,.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .28s var(--ease);display:flex;flex-direction:column;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:14px;font-weight:700;color:var(--t1)}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);color:var(--t1);font-size:20px;line-height:1}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin:16px 0 24px}
.drawer-link{padding:14px 12px;border-radius:12px;font-size:16px;color:var(--t2)}
.drawer-link:hover{background:rgba(255,255,255,.04);color:var(--t1)}
.drawer-link.active{color:var(--primary);background:rgba(20,232,196,.08)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;transition:transform .18s var(--ease),filter .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease)}
.btn-primary{color:#04120F;background:linear-gradient(180deg,#2BF3D5,#12D2B0);clip-path:polygon(0 5px,5px 0,100% 0,100% calc(100% - 5px),calc(100% - 5px) 100%,0 100%);filter:drop-shadow(0 8px 22px rgba(20,232,196,.30));box-shadow:inset 0 1px 0 rgba(255,255,255,.3)}
.btn-primary:hover{transform:translateY(-2px);filter:drop-shadow(0 12px 30px rgba(20,232,196,.5))}
.btn-primary:active{transform:translateY(0);filter:drop-shadow(0 4px 14px rgba(20,232,196,.35))}
.btn-ghost{color:var(--t1);background:rgba(18,28,48,.55);border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn-ghost:hover{border-color:rgba(20,232,196,.6);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.badge-primary{color:var(--primary);background:rgba(20,232,196,.08);border:1px solid rgba(20,232,196,.45)}
.badge-accent{color:#B7A6FF;background:rgba(122,92,255,.12);border:1px solid rgba(122,92,255,.45)}
.badge-warn{color:var(--warn);background:rgba(255,177,61,.08);border:1px solid rgba(255,177,61,.45)}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg-800);border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--t3);flex-wrap:wrap}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .current{color:var(--t1)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:72px 0 56px;background-image:url("/assets/images/backpic/back-3.png");background-size:cover;background-position:center;background-repeat:no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(5,7,14,.88),rgba(5,7,14,.72) 42%,rgba(10,16,32,.97)),
  radial-gradient(60% 60% at 18% 12%,rgba(20,232,196,.16),transparent 65%),
  radial-gradient(60% 60% at 88% 88%,rgba(122,92,255,.18),transparent 65%);}
.hero::after{content:"";position:absolute;inset:0;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:40px 40px;opacity:.9}
.hero-inner{position:relative;z-index:2;max-width:900px;margin:0 auto;text-align:center}
.hero-title{margin-top:20px}
.hero-title-strong{display:block;font-size:44px;font-weight:800;line-height:1.2;color:#fff;letter-spacing:0}
.hero-title-sub{display:block;margin-top:12px;font-size:24px;font-weight:700;background:linear-gradient(90deg,#14E8C4,#7A5CFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-line{width:96px;height:2px;margin:22px auto 0;border-radius:2px;background:var(--grad)}
.hero-desc{max-width:640px;margin:18px auto 0;font-size:17px;color:var(--t2)}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero-strip{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);margin-top:52px;border:1px solid var(--line);border-top:1px solid rgba(20,232,196,.45);border-radius:16px;background:rgba(18,28,48,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-card);overflow:hidden}
.strip-item{padding:18px 20px;border-right:1px solid var(--line)}
.strip-item:last-child{border-right:0}
.strip-title{font-size:14px;font-weight:600;color:var(--primary)}
.strip-text{font-size:13px;color:var(--t2);margin-top:5px}

/* ============ 板块 ============ */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-700);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px}
.short-line{width:64px;height:2px;border-radius:2px;background:var(--grad);margin-bottom:18px}
.section-title{font-size:30px;font-weight:700}
.section-desc{margin-top:14px;font-size:16px;color:var(--t2)}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ============ 玻璃卡 ============ */
.glass{position:relative;border-radius:var(--r-card);border:1px solid var(--line);background:rgba(18,28,48,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.glass::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(20,232,196,.65),rgba(122,92,255,.4),transparent)}

/* ============ 设备矩阵 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.device-card{padding:24px 24px 26px}
.device-card:hover{transform:translateY(-4px);border-color:rgba(20,232,196,.35);box-shadow:0 22px 56px rgba(0,0,0,.5)}
.device-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.device-icon{width:40px;height:40px;color:var(--primary)}
.device-icon svg{width:100%;height:100%}
.device-name{margin-top:18px;font-size:18px;font-weight:600;color:var(--t1)}
.device-text{margin-top:8px;font-size:14px;color:var(--t2)}

/* ============ 规格表 ============ */
.spec-wrap{margin-top:36px;border:1px solid var(--line);border-radius:var(--r-card);background:rgba(18,28,48,.42);overflow:hidden}
.spec-table th{font-size:13px;font-weight:600;color:var(--t3);text-align:left;padding:15px 22px;background:rgba(5,7,14,.55);border-bottom:1px solid rgba(20,232,196,.4);letter-spacing:.04em}
.spec-table td{padding:17px 22px;font-size:15px;color:var(--t2);border-bottom:1px solid var(--line);vertical-align:top}
.spec-table tbody tr:nth-child(odd){background:rgba(255,255,255,.022)}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-key{color:var(--t1);font-weight:600;white-space:nowrap}

/* ============ 图文自查 ============ */
.check-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;margin-top:40px}
.media{position:relative;border-radius:14px;overflow:hidden;background:rgba(18,28,48,.6);border:1px solid var(--line)}
.media-43{aspect-ratio:4/3}
.media::before{content:attr(data-mark);position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:56px;font-weight:800;color:rgba(20,232,196,.22)}
.media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.media::after{content:"";position:absolute;inset:0;z-index:2;background:rgba(5,7,14,.18);pointer-events:none}
.media:hover img{transform:scale(1.04)}
.check-list{margin-top:6px}
.check-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed var(--line)}
.check-item:first-child{padding-top:0}
.check-item:last-child{border-bottom:0}
.check-mark{flex:0 0 26px;width:26px;height:26px;margin-top:4px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--primary);background:rgba(20,232,196,.1);border:1px solid rgba(20,232,196,.4)}
.check-mark svg{width:14px;height:14px}
.check-title{font-size:17px;font-weight:600;color:var(--t1)}
.check-text{margin-top:6px;font-size:14px;color:var(--t2)}

/* ============ 注意事项 ============ */
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:44px}
.note{padding-left:22px;border-left:2px solid rgba(20,232,196,.45)}
.note-num{font-size:26px;font-weight:800;color:var(--primary);line-height:1;font-variant-numeric:tabular-nums}
.note-title{margin-top:12px;font-size:17px;font-weight:600;color:var(--t1)}
.note-text{margin-top:8px;font-size:14px;color:var(--t2)}

/* ============ CTA ============ */
.cta-panel{position:relative;border-radius:var(--r-panel);padding:56px 52px;overflow:hidden;border:1px solid rgba(255,255,255,.14);background:
  radial-gradient(120% 140% at 10% 0%,rgba(20,232,196,.18),transparent 58%),
  radial-gradient(90% 130% at 92% 100%,rgba(122,92,255,.22),transparent 60%),
  rgba(10,16,32,.9);
  box-shadow:var(--shadow-float)}
.cta-panel::before{content:"";position:absolute;inset:0;border-radius:var(--r-panel);padding:1px;background:var(--grad);opacity:.45;pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude}
.cta-inner{position:relative;z-index:2;max-width:660px}
.cta-title{font-size:30px;font-weight:700;color:#fff}
.cta-text{margin-top:14px;font-size:16px;color:var(--t2)}
.cta-actions{display:flex;align-items:center;gap:14px;margin-top:30px;flex-wrap:wrap}
.cta-note{display:flex;gap:18px;margin-top:26px;flex-wrap:wrap;font-size:13px;color:var(--t3)}
.cta-note span{display:inline-flex;align-items:center;gap:6px}
.cta-note i{width:5px;height:5px;border-radius:50%;background:var(--primary);display:inline-block}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-900);padding:64px 0 24px;border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);opacity:.6}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding-bottom:38px}
.footer-brand{display:flex;align-items:center;gap:11px}
.footer-col h4{position:relative;font-size:14px;font-weight:700;color:var(--t1);padding-bottom:10px;margin-bottom:16px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:22px;height:1px;background:var(--grad)}
.footer-col p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--t2)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--t2);width:fit-content}
.footer-links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--t3)}
.footer-domain{font-variant-numeric:tabular-nums;color:var(--t3)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none}
  .burger{display:flex}
  .nav-actions{margin-left:auto}
  .hero{padding:56px 0 48px}
  .hero-title-strong{font-size:34px}
  .hero-title-sub{font-size:20px}
  .hero-strip{grid-template-columns:repeat(2,1fr)}
  .strip-item:nth-child(2n){border-right:0}
  .strip-item:nth-child(1),.strip-item:nth-child(2){border-bottom:1px solid var(--line)}
  .section{padding:72px 0}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:1fr;gap:32px}
  .notes{grid-template-columns:1fr;gap:24px}
  .cta-panel{padding:44px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .topbar-mid{display:none}
  .nav-inner{height:64px;gap:12px}
  .logo-name{font-size:14px;white-space:normal;line-height:1.25}
  .logo-mark{width:34px;height:34px;font-size:16px}
  .hero{padding:44px 0 40px}
  .hero-title-strong{font-size:30px}
  .hero-title-sub{font-size:19px}
  .hero-desc{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px}
  .hero-actions .btn{width:100%}
  .hero-strip{grid-template-columns:1fr;margin-top:36px}
  .strip-item{border-right:0;border-bottom:1px solid var(--line)}
  .strip-item:last-child{border-bottom:0}
  .section{padding:56px 0}
  .section-title{font-size:24px}
  .section-desc{font-size:15px}
  .device-grid{grid-template-columns:1fr;gap:16px}
  .device-card{padding:20px}
  .spec-table,.spec-table thead,.spec-table tbody,.spec-table tr,.spec-table th,.spec-table td{display:block;width:100%}
  .spec-table thead{display:none}
  .spec-wrap{border:0;background:transparent;overflow:visible;margin-top:28px}
  .spec-table tr{margin-bottom:16px;border:1px solid var(--line);border-radius:14px;background:rgba(18,28,48,.55);padding:6px 4px;overflow:hidden}
  .spec-table tbody tr:nth-child(odd){background:rgba(18,28,48,.55)}
  .spec-table td{border-bottom:0;padding:10px 18px;font-size:14px}
  .spec-table td::before{content:attr(data-label);display:block;font-size:12px;color:var(--t3);margin-bottom:4px}
  .spec-key{white-space:normal}
  .notes{gap:22px}
  .cta-panel{padding:34px 22px;border-radius:20px}
  .cta-title{font-size:23px}
  .cta-text{font-size:15px}
  .cta-actions{flex-direction:column;align-items:stretch;gap:12px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}