/* roulang page: index */
:root{
  --bg:#070C14;
  --panel:#0D1626;
  --panel-2:#101C30;
  --primary:#1C7CFF;
  --primary-light:#5FA8FF;
  --accent:#FF6A1A;
  --lime:#C6FF3D;
  --text:#E8F0FB;
  --muted:#93A6BF;
  --dim:#5D7290;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-panel:22px;
  --radius-input:12px;
  --radius-tag:6px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px rgba(28,124,255,.45), 0 10px 30px -8px rgba(28,124,255,.55);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out,transform .2s ease-out}
button,input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}
::selection{background:rgba(28,124,255,.35);color:#fff}
.mono{font-family:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:76px;display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:background-color .24s ease-out,backdrop-filter .24s ease-out,border-color .24s ease-out;
}
.site-header.scrolled{
  background:rgba(9,15,26,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:24px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;position:relative;flex-shrink:0}
.brand-mark svg{width:100%;height:100%;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;color:#fff}
.brand-name em{font-style:normal;color:var(--primary-light)}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--dim);text-transform:uppercase}
.nav-links{display:none;align-items:center;gap:26px;margin-left:auto}
.nav-links a{font-size:14.5px;color:var(--muted);position:relative;padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--primary-light)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-links + .nav-actions{margin-left:0}
.nav-divider{width:1px;height:20px;background:var(--line);display:none}
.nav-login{display:none;font-size:14.5px;color:var(--muted)}
.nav-login:hover{color:var(--primary-light)}
.btn-sm{height:38px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:transparent;cursor:pointer;padding:0 10px;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(min-width:1100px){
  .nav-links{display:flex}
  .nav-actions{margin-left:0}
  .nav-divider,.nav-login{display:inline-flex}
  .nav-toggle{display:none}
}
.mobile-menu{
  position:fixed;inset:76px 0 0 0;z-index:70;background:rgba(7,12,20,.98);
  backdrop-filter:blur(10px);padding:36px 24px 48px;overflow-y:auto;
  display:none;flex-direction:column;gap:0;
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  font-size:22px;font-weight:600;padding:20px 0;border-bottom:1px solid var(--line);color:var(--text);
}
.mobile-menu a.active{color:var(--primary-light)}
.mobile-menu .btn{margin-top:28px;height:52px;font-size:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,filter .2s ease-out,border-color .2s ease-out;
}
.btn-primary{background:linear-gradient(135deg,#1C7CFF,#4E9BFF);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(28,124,255,.5),0 18px 42px -8px rgba(28,124,255,.68)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.18)}
.btn-ghost:hover{border-color:rgba(28,124,255,.75);background:rgba(28,124,255,.10)}
.btn-block{width:100%}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;font-weight:600}
.btn-link:hover{color:var(--primary-light)}
.btn-link .arw{transition:transform .2s ease-out}
.btn-link:hover .arw{transform:translateX(4px)}
.btn:disabled,.btn[aria-disabled="true"]{filter:saturate(.4);box-shadow:none;cursor:not-allowed;opacity:.7}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--radius-tag);
  padding:4px 10px;font-size:12px;letter-spacing:.02em;
  background:rgba(28,124,255,.12);color:var(--primary-light);border:1px solid rgba(28,124,255,.22);
}
.tag-accent{background:rgba(255,106,26,.12);color:#FFB183;border-color:rgba(255,106,26,.28)}
.tag-lime{background:rgba(198,255,61,.12);color:var(--lime);border-color:rgba(198,255,61,.3)}
.tag-plain{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;
  color:var(--dim);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary)}
h2.h-sec{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.25;color:#fff}
.sec-desc{margin-top:12px;color:var(--muted);font-size:15px;max-width:620px}
h3.h-card{font-size:17px;font-weight:600;color:#fff;line-height:1.5}

.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:border-color .2s ease-out,transform .2s ease-out;
}
.card:hover{border-color:rgba(28,124,255,.4)}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- hero ---------- */
.hero{position:relative;padding:132px 0 72px;overflow:hidden;background:var(--bg)}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.42}
.hero-veil{position:absolute;inset:0;background:
  radial-gradient(900px 520px at 16% 12%,rgba(28,124,255,.36),transparent 62%),
  radial-gradient(680px 420px at 90% 4%,rgba(255,106,26,.20),transparent 62%),
  linear-gradient(180deg,rgba(7,12,20,.78) 0%,rgba(7,12,20,.92) 58%,rgba(7,12,20,1) 100%);}
.hero-grid-lines{position:absolute;inset:0;opacity:.7;
  background-image:linear-gradient(rgba(160,210,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(160,210,255,.07) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 45% 35%,#000 20%,transparent 76%);
  mask-image:radial-gradient(circle at 45% 35%,#000 20%,transparent 76%);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:44px;align-items:center}
@media(min-width:1024px){.hero-inner{grid-template-columns:1.15fr .85fr;gap:56px}}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:7px 14px 7px 10px;border-radius:999px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);font-size:13px;color:var(--muted);
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(198,255,61,.9)}
h1.hero-title{
  margin-top:22px;font-size:clamp(32px,4.6vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.01em;color:#fff;
}
h1.hero-title span{color:var(--primary-light)}
.hero-sub{margin-top:18px;font-size:clamp(15px,1.4vw,18px);color:var(--muted);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.stat-num{font-size:clamp(22px,2.6vw,32px);font-weight:800;color:#fff;letter-spacing:-.01em}
.stat-label{font-size:13px;color:var(--dim);margin-top:4px;letter-spacing:.02em}

.glass{
  background:rgba(16,28,48,.62);
  border:1px solid rgba(160,210,255,.14);
  border-radius:var(--radius-panel);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 30px 70px -30px rgba(0,0,0,.85),inset 0 1px 0 rgba(160,210,255,.10);
}
.login-panel{position:relative;padding:26px 24px 24px}
.login-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.login-head strong{font-size:16px;font-weight:700;color:#fff}
.live{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--muted)}
.live i{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(198,255,61,.9);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.field{position:relative;margin-bottom:14px}
.field-label{position:absolute;left:14px;top:9px;font-size:11px;letter-spacing:.06em;color:var(--dim);pointer-events:none}
.field input,.field select,.field textarea{
  width:100%;background:rgba(7,12,20,.7);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-input);height:58px;padding:22px 14px 8px;font-size:15px;color:var(--text);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field input::placeholder,.field textarea::placeholder{color:#4C5F79}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(28,124,255,.12)
}
.field textarea{height:auto;min-height:112px;padding:30px 14px 12px;resize:vertical}
.field select{appearance:none;padding-top:22px;
  background-image:linear-gradient(45deg,transparent 50%,#93A6BF 50%),linear-gradient(135deg,#93A6BF 50%,transparent 50%);
  background-position:calc(100% - 20px) 26px,calc(100% - 14px) 26px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.field-note{font-size:12px;color:var(--dim);margin-top:14px;text-align:center}
.login-foot{margin-top:16px;display:flex;justify-content:space-between;font-size:12.5px;color:var(--dim);gap:10px;flex-wrap:wrap}

/* ---------- news grid ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:1024px){.news-grid{grid-template-columns:1.35fr 1fr}}
.news-main{display:flex;flex-direction:column;overflow:hidden}
.news-media{position:relative;overflow:hidden;border-radius:var(--radius-card) var(--radius-card) 0 0;aspect-ratio:16/9}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out}
.news-main:hover .news-media img{transform:scale(1.03)}
.news-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,0) 40%,rgba(7,12,20,.92) 100%)}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:20px;font-weight:700;color:#fff;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-main:hover .news-title{color:var(--primary-light)}
.news-excerpt{font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--dim);margin-top:auto}
.news-side{display:grid;gap:14px;align-content:start}
.side-item{display:flex;gap:14px;padding:12px;align-items:center}
.side-thumb{width:104px;height:76px;border-radius:12px;overflow:hidden;flex-shrink:0;background:#0A1524}
.side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.side-item:hover .side-thumb img{transform:scale(1.04)}
.side-title{font-size:15px;font-weight:600;color:var(--text);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-item:hover .side-title{color:var(--primary-light)}
.side-meta{font-size:12px;color:var(--dim);margin-top:8px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.empty-state{
  text-align:center;padding:48px 24px;border:1px dashed rgba(255,255,255,.14);
  border-radius:var(--radius-card);background:rgba(13,22,38,.5);
}
.empty-state .ic{font-size:26px;color:var(--dim);margin-bottom:10px}
.empty-state p{color:var(--muted);font-size:14.5px}

/* ---------- ladder ---------- */
.ladder{position:relative;display:grid;gap:16px;margin-top:8px}
.ladder::before{content:"";position:absolute;left:19px;top:24px;bottom:24px;width:2px;background:linear-gradient(180deg,rgba(28,124,255,.7),rgba(255,106,26,.5),rgba(28,124,255,.15))}
.ladder-row{display:flex;gap:18px;align-items:flex-start;position:relative}
.ladder-num{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--accent),#FF9147);
  box-shadow:0 10px 24px -10px rgba(255,106,26,.8);position:relative;z-index:2;
}
.ladder-body{flex:1;padding:18px 20px}
.ladder-body h3{font-size:16.5px;font-weight:700;color:#fff}
.ladder-body p{font-size:14.5px;color:var(--muted);margin-top:6px}
.ladder-body .tag{margin-top:12px}

/* ---------- compare table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--line);background:var(--panel);-webkit-overflow-scrolling:touch}
table.cmp{min-width:760px;font-size:14.5px}
table.cmp th,table.cmp td{padding:18px 20px;text-align:center;border-bottom:1px solid var(--line)}
table.cmp th:first-child,table.cmp td:first-child{text-align:left;color:var(--muted);font-weight:500}
table.cmp thead th{
  position:sticky;top:0;z-index:3;background:#0B1526;font-size:15px;font-weight:700;color:#fff;
}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp tbody tr:hover td{background:rgba(28,124,255,.05)}
.col-rec{position:relative;background:rgba(28,124,255,.10);border-left:1px solid rgba(28,124,255,.35);border-right:1px solid rgba(28,124,255,.35)}
thead .col-rec::before{
  content:"推荐";position:absolute;top:-1px;left:50%;transform:translate(-50%,-100%);
  background:var(--lime);color:#0A1300;font-size:11px;font-weight:700;padding:3px 12px;border-radius:6px 6px 0 0;letter-spacing:.06em;
}
td.yes{color:var(--primary-light);font-weight:600}
td.no{color:#41526B}
.price{font-size:22px;font-weight:800;color:#fff}

/* ---------- countdown banner ---------- */
.banner{position:relative;border-radius:var(--radius-panel);overflow:hidden;border:1px solid var(--line)}
.banner-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.34}
.banner-veil{position:absolute;inset:0;background:linear-gradient(105deg,rgba(7,12,20,.96) 8%,rgba(7,12,20,.72) 52%,rgba(28,124,255,.28) 100%)}
.banner-inner{position:relative;z-index:2;padding:34px 26px;display:flex;flex-direction:column;gap:26px}
@media(min-width:1024px){.banner-inner{padding:46px 48px;flex-direction:row;align-items:center;justify-content:space-between}}
.banner-title{font-size:clamp(21px,2.4vw,29px);font-weight:800;color:#fff;line-height:1.3}
.banner-sub{color:var(--muted);font-size:14.5px;margin-top:10px;max-width:38em}
.countdown{display:flex;gap:10px;margin-top:20px}
.cd-block{
  min-width:64px;padding:10px 12px;border-radius:14px;background:rgba(7,12,20,.72);
  border:1px solid rgba(255,255,255,.12);text-align:center;
}
.cd-block b{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.2}
.cd-block span{font-size:11px;color:var(--dim);letter-spacing:.08em}

/* ---------- form section ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:26px}
@media(min-width:1024px){.contact-grid{grid-template-columns:.85fr 1.15fr;gap:36px}}
.contact-points{display:grid;gap:18px;margin-top:26px}
.point{display:flex;gap:14px;align-items:flex-start}
.point-ic{
  width:36px;height:36px;border-radius:12px;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  background:rgba(28,124,255,.12);color:var(--primary-light);border:1px solid rgba(28,124,255,.24);font-size:15px;font-weight:700;
}
.point strong{display:block;font-size:15px;color:#fff;font-weight:600}
.point p{font-size:14px;color:var(--muted);margin-top:4px}
.form-panel{padding:26px 22px}
@media(min-width:768px){.form-panel{padding:34px 32px}}
.form-row{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.form-row.two{grid-template-columns:1fr 1fr}}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--dim);margin:18px 0 20px}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--primary)}

/* ---------- faq ---------- */
.faq-wrap{padding:8px 22px}
@media(min-width:768px){.faq-wrap{padding:8px 34px}}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--primary-light)}
.faq-sign{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);color:var(--muted);font-size:16px;line-height:1;
  transition:transform .25s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.faq-item.open .faq-sign{transform:rotate(180deg);color:var(--primary-light);border-color:rgba(28,124,255,.5)}
.faq-a{display:none;padding:0 0 22px;font-size:15px;color:var(--muted);max-width:60em}
.faq-item.open .faq-a{display:block}

/* ---------- footer ---------- */
.site-footer{background:#05090F;border-top:1px solid var(--line);margin-top:20px}
.footer-cta{
  display:flex;flex-direction:column;gap:20px;align-items:flex-start;
  padding:40px 0;border-bottom:1px solid var(--line);
}
@media(min-width:900px){.footer-cta{flex-direction:row;align-items:center;justify-content:space-between}}
.footer-cta h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:#fff}
.footer-cta p{color:var(--muted);font-size:14.5px;margin-top:8px}
.footer-cols{display:grid;grid-template-columns:1fr;gap:34px;padding:46px 0}
@media(min-width:640px){.footer-cols{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-cols{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-cols h4{font-size:14px;color:#fff;font-weight:700;letter-spacing:.02em;margin-bottom:16px}
.footer-cols li{margin-bottom:11px}
.footer-cols a,.footer-cols span{font-size:14px;color:var(--muted)}
.footer-cols a:hover{color:var(--primary-light);transform:translateX(-2px);display:inline-block}
.footer-brand p{font-size:14px;color:var(--dim);margin-top:14px;max-width:26em;line-height:1.8}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--dim)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg:#070C14;
  --panel:#0D1626;
  --panel-soft:#111C2E;
  --primary:#1C7CFF;
  --primary-light:#5FA8FF;
  --accent:#FF6A1A;
  --lime:#C6FF3D;
  --text:#E8F0FB;
  --muted:#93A6BF;
  --weak:#5D7290;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:18px;
  --radius-float:22px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px rgba(28,124,255,.45), 0 10px 30px -8px rgba(28,124,255,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700}
p{margin:0}
svg{display:block}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .container{padding:0 32px}
}
@media (min-width:1440px){
  .container{max-width:1280px}
}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,12,20,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark svg{width:38px;height:38px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em}
.brand-name em{font-style:normal;color:var(--primary)}
.brand-sub{font-size:10px;letter-spacing:.18em;color:var(--weak);margin-top:3px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;
  font-size:14.5px;
  color:var(--muted);
  padding-bottom:6px;
  transition:color .22s var(--ease);
}
.nav-links a::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 .22s var(--ease);
}
.nav-links a:hover{color:var(--primary-light)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:#fff}
.nav-links a.active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:transparent;
  cursor:pointer;
  align-items:center;
  justify-content:center;
}
.nav-toggle span{
  display:block;
  width:18px;height:1.6px;
  background:var(--text);
  margin:3px auto;
  border-radius:2px;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

@media (max-width:1023px){
  .nav-toggle{display:flex;flex-direction:column;justify-content:center}
  .nav-links{
    position:fixed;
    left:0;right:0;
    top:76px;
    bottom:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:24px 24px 48px;
    background:rgba(7,12,20,.985);
    backdrop-filter:blur(18px);
    transform:translateX(100%);
    transition:transform .26s var(--ease);
    overflow-y:auto;
  }
  .nav-links a{
    width:100%;
    font-size:19px;
    padding:18px 0;
    color:var(--text);
    border-bottom:1px solid var(--line);
  }
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--primary-light)}
  body.nav-open .nav-links{transform:translateX(0)}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(4.6px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-4.6px) rotate(-45deg)}
}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:48px;
  padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#1C7CFF 0%,#4E9BFF 100%);
  color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(28,124,255,.55),0 18px 38px -8px rgba(28,124,255,.6);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text);
}
.btn-ghost:hover{
  border-color:var(--primary);
  background:rgba(28,124,255,.10);
  transform:translateY(-1px);
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--muted);
  transition:color .22s var(--ease);
}
.text-link:hover{color:var(--primary-light)}
.text-link:hover .arrow{transform:translateX(4px)}
.text-link .arrow{transition:transform .22s var(--ease)}

.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 12px;
  border-radius:6px;
  font-size:12.5px;
  letter-spacing:.02em;
  background:rgba(28,124,255,.12);
  border:1px solid rgba(28,124,255,.26);
  color:var(--primary-light);
}
.badge-accent{
  background:rgba(255,106,26,.12);
  border-color:rgba(255,106,26,.28);
  color:#FF9558;
}
.dot-live{
  width:7px;height:7px;border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(198,255,61,.16);
}

.section{padding:88px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:640px}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.16em;
  color:var(--primary-light);
  margin-bottom:14px;
  text-transform:uppercase;
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.card:hover{border-color:rgba(28,124,255,.4);transform:translateY(-1px)}

/* ============ 页面首屏 ============ */
.page-hero{
  position:relative;
  padding:56px 0 76px;
  background-image:
    radial-gradient(900px 520px at 12% 8%,rgba(28,124,255,.22),transparent 62%),
    radial-gradient(700px 420px at 92% 0%,rgba(255,106,26,.14),transparent 60%),
    linear-gradient(rgba(7,12,20,.88),rgba(7,12,20,.96)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover,cover,cover,cover;
  background-position:center,center,center,center;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{margin-bottom:28px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--weak)}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{color:var(--primary-light)}

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  gap:52px;
  align-items:center;
}
.hero-grid h1{
  font-size:clamp(32px,4.4vw,52px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.15;
}
.hero-grid h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#5FA8FF,#1C7CFF 60%,#FF6A1A);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-lead{
  margin-top:22px;
  font-size:16px;
  color:var(--muted);
  max-width:620px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

.hero-visual{
  position:relative;
  border-radius:var(--radius-float);
  overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  background:var(--panel);
}
.hero-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  filter:brightness(.86) saturate(1.05);
}
.hero-visual .visual-caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:22px 24px;
  background:linear-gradient(180deg,transparent,rgba(7,12,20,.92) 70%);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.hero-visual .visual-caption strong{font-size:15px;font-weight:600}
.hero-visual .visual-caption span{font-size:12.5px;color:var(--weak)}
.visual-float{
  position:absolute;
  top:18px;left:18px;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  background:rgba(13,22,38,.78);
  border:1px solid var(--line-strong);
  backdrop-filter:blur(12px);
  color:var(--text);
}

/* ============ 步骤时间轴 ============ */
.steps{margin-top:8px}
.step{
  position:relative;
  display:grid;
  grid-template-columns:60px minmax(0,1fr);
  gap:22px;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";
  position:absolute;
  left:29px;
  top:62px;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg,rgba(28,124,255,.55),rgba(28,124,255,.05));
}
.step:last-child::before{display:none}
.step-num{
  width:60px;height:60px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--panel);
  border:1px solid rgba(28,124,255,.36);
  color:var(--primary-light);
  font-family:"DIN Alternate","SFMono-Regular",Consolas,monospace;
  font-size:19px;
  font-weight:700;
  box-shadow:0 0 0 6px rgba(28,124,255,.06);
  flex-shrink:0;
}
.step:nth-child(2) .step-num{border-color:rgba(255,106,26,.4);color:#FF9558;box-shadow:0 0 0 6px rgba(255,106,26,.07)}
.step:nth-child(4) .step-num{border-color:rgba(198,255,61,.38);color:var(--lime);box-shadow:0 0 0 6px rgba(198,255,61,.07)}
.step-body{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  box-shadow:var(--shadow-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.step-body:hover{border-color:rgba(28,124,255,.4);transform:translateY(-1px)}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step-body p{color:var(--muted);font-size:15px}
.step-body .step-note{
  margin-top:14px;
  padding:12px 14px;
  border-radius:12px;
  background:rgba(28,124,255,.08);
  border:1px solid rgba(28,124,255,.18);
  font-size:13.5px;
  color:var(--primary-light);
}

/* ============ 登录方式混排 ============ */
.method-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr;
  gap:22px;
}
.method-wide{
  grid-column:span 1;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  padding:30px;
  background:linear-gradient(160deg,rgba(28,124,255,.16),rgba(13,22,38,.4) 62%),var(--panel);
  border:1px solid rgba(28,124,255,.3);
  border-radius:var(--radius-float);
  box-shadow:var(--shadow-card);
}
.method-wide h3{font-size:21px;margin:16px 0 12px}
.method-wide p{color:var(--muted);font-size:15px}
.method-wide .method-meta{
  display:flex;align-items:center;gap:14px;margin-top:22px;
  font-size:13px;color:var(--weak);
  font-family:"DIN Alternate","SFMono-Regular",Consolas,monospace;
}
.method-card{
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.method-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(28,124,255,.12);
  border:1px solid rgba(28,124,255,.24);
  color:var(--primary-light);
  font-size:16px;
  font-weight:700;
  font-family:"DIN Alternate","SFMono-Regular",Consolas,monospace;
}
.method-card h3{font-size:17px;font-weight:600}
.method-card p{font-size:14.5px;color:var(--muted)}

/* ============ 异常排查列表 ============ */
.trouble-wrap{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:44px;
  align-items:start;
}
.trouble-list{display:flex;flex-direction:column;gap:2px}
.trouble-item{
  padding:22px 0 22px 24px;
  border-top:1px solid var(--line);
  border-left:2px solid transparent;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.trouble-item:last-child{border-bottom:1px solid var(--line)}
.trouble-item:hover{border-left-color:var(--accent);background:rgba(255,106,26,.04)}
.trouble-item h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.trouble-item p{font-size:14.5px;color:var(--muted)}
.trouble-item .tagline{
  display:inline-block;
  margin-top:10px;
  font-size:12.5px;
  color:var(--accent);
  letter-spacing:.02em;
}
.trouble-aside{
  border-radius:var(--radius-float);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
}
.trouble-aside img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  filter:brightness(.84);
}
.trouble-aside .aside-text{padding:24px 26px}
.trouble-aside h3{font-size:17px;margin-bottom:10px}
.trouble-aside p{font-size:14.5px;color:var(--muted)}
.trouble-aside ul{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.trouble-aside li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:var(--muted);
}
.trouble-aside li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--primary);
  margin-top:9px;
  flex-shrink:0;
}

/* ============ 指标条 ============ */
.metrics{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.metric-card{
  padding:28px 26px;
  border-radius:var(--radius-card);
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.metric-card:hover{border-color:rgba(28,124,255,.4);transform:translateY(-1px)}
.metric-value{
  font-family:"DIN Alternate","SFMono-Regular",Consolas,monospace;
  font-size:34px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--text);
}
.metric-value em{font-style:normal;font-size:16px;color:var(--weak);margin-left:6px;font-weight:600}
.metric-label{font-size:13px;color:var(--weak);margin-top:8px;letter-spacing:.02em}
.metric-desc{font-size:14px;color:var(--muted);margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}

/* ============ FAQ ============ */
.faq-panel{
  border-radius:var(--radius-float);
  border:1px solid var(--line-strong);
  background:linear-gradient(180deg,rgba(17,28,46,.85),rgba(13,22,38,.85));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:10px 28px;
  box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 0;
  font-size:16px;
  font-weight:600;
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-light)}
.faq-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:4px;border-radius:8px}
.faq-icon{
  position:relative;
  width:22px;height:22px;
  flex-shrink:0;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.22);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--muted);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px;transition:opacity .2s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg);border-color:var(--primary)}
.faq-item[open] .faq-icon::before{background:var(--primary)}
.faq-item[open] .faq-icon::after{opacity:0}
.faq-answer{
  padding:0 0 22px;
  font-size:15px;
  color:var(--muted);
  max-width:920px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  border-radius:var(--radius-float);
  overflow:hidden;
  border:1px solid var(--line-strong);
  padding:52px 48px;
  background-image:
    radial-gradient(600px 320px at 88% 10%,rgba(28,124,255,.28),transparent 62%),
    linear-gradient(rgba(7,12,20,.82),rgba(7,12,20,.92)),
    url('/assets/images/backpic/back-3.png');
  background-size:cover,cover,cover;
  background-position:center;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px)}
.cta-band p{margin-top:12px;color:var(--muted);font-size:15px;max-width:560px}
.cta-band .btn{flex-shrink:0}

.related-links{
  margin-top:34px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  font-size:14px;
  color:var(--weak);
}
.related-links a{
  padding:8px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  color:var(--muted);
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.related-links a:hover{color:var(--primary-light);border-color:var(--primary);background:rgba(28,124,255,.08)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(13,22,38,.6),rgba(7,12,20,1));
  padding:72px 0 32px;
}
.footer-cta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:32px 36px;
  border-radius:var(--radius-float);
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(28,124,255,.14),rgba(13,22,38,.5));
  margin-bottom:56px;
}
.footer-cta h2{font-size:22px}
.footer-cta p{margin-top:10px;color:var(--muted);font-size:14.5px;max-width:620px}
.footer-cta .btn{flex-shrink:0}
.footer-cols{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.15fr;
  gap:40px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--muted)}
.site-footer h4{font-size:15px;margin-bottom:18px;color:var(--text)}
.site-footer ul{display:flex;flex-direction:column;gap:11px}
.site-footer ul a,.site-footer ul span{
  font-size:14px;
  color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.site-footer ul a:hover{color:var(--primary-light);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  font-size:13px;
  color:var(--weak);
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .method-grid{grid-template-columns:1fr 1fr}
  .method-wide{grid-column:span 2}
  .trouble-wrap{grid-template-columns:1fr;gap:32px}
  .metrics{grid-template-columns:1fr 1fr}
  .footer-cols{grid-template-columns:1fr 1fr;gap:34px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .footer-cta{flex-direction:column;align-items:flex-start;padding:28px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:30px}
  .metrics{grid-template-columns:1fr}
  .method-grid{grid-template-columns:1fr}
  .method-wide{grid-column:span 1}
  .page-hero{padding:34px 0 56px}
  .step{grid-template-columns:48px minmax(0,1fr);gap:16px}
  .step-num{width:48px;height:48px;font-size:16px}
  .step::before{left:23px;top:50px}
  .step-body{padding:20px}
  .faq-panel{padding:6px 18px}
  .footer-cols{grid-template-columns:1fr}
  .site-footer{padding:56px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg:#070C14;
  --panel:#0D1626;
  --panel-2:#111C2E;
  --primary:#1C7CFF;
  --primary-soft:#5FA8FF;
  --accent:#FF6A1A;
  --lime:#C6FF3D;
  --text:#E8F0FB;
  --text-2:#93A6BF;
  --text-3:#5D7290;
  --line:rgba(255,255,255,.08);
  --radius-card:18px;
  --radius-panel:22px;
  --radius-input:12px;
  --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
  --shadow-glow:0 0 0 1px rgba(28,124,255,.45), 0 10px 30px -8px rgba(28,124,255,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
@media (min-width:1440px){:root{--container:1280px;}}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
html body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:15px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease),color .22s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,#1C7CFF 0%,#4E9BFF 100%);color:#fff;box-shadow:var(--shadow-glow);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(28,124,255,.6),0 18px 42px -10px rgba(28,124,255,.7);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);background:rgba(28,124,255,.10);color:#fff;transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:transparent;border-bottom:1px solid transparent;transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);}
.site-header.is-scrolled{background:rgba(7,12,20,.84);backdrop-filter:blur(18px);border-bottom-color:var(--line);}
.nav-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark svg{width:40px;height:40px;display:block;}
.brand-name{display:block;font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.2;}
.brand-name em{font-style:normal;color:var(--primary-soft);}
.brand-sub{display:block;font-size:9.5px;letter-spacing:.2em;color:var(--text-3);line-height:1.6;}
.nav-links{display:flex;align-items:center;gap:32px;}
.nav-links a{position:relative;padding:6px 0;font-size:14.5px;color:var(--text-2);transition:color .2s var(--ease);}
.nav-links a::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 .24s var(--ease);}
.nav-links a:hover{color:var(--primary-soft);}
.nav-links a.active{color:var(--text);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.nav-login{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.nav-login:hover{color:var(--primary-soft);}
.nav-divider{width:1px;height:18px;background:rgba(255,255,255,.14);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:transparent;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:border-color .2s var(--ease),background .2s var(--ease);}
.nav-toggle:hover{border-color:rgba(28,124,255,.5);background:rgba(28,124,255,.08);}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
.nav-toggle:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.mobile-menu{position:fixed;left:0;right:0;top:76px;bottom:0;z-index:55;padding:28px 24px 48px;background:rgba(5,9,16,.98);backdrop-filter:blur(20px);overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);}
.mobile-menu.is-open{opacity:1;visibility:visible;transform:none;}
.mobile-menu nav{display:grid;margin-bottom:28px;}
.mobile-menu nav a{display:block;padding:16px 0;font-size:19px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.mobile-menu nav a:hover{color:var(--primary-soft);padding-left:6px;}
.mobile-menu nav a:first-child{border-top:1px solid var(--line);}

@media (max-width:1023px){
  .nav-links,.nav-divider,.nav-login{display:none;}
  .nav-toggle{display:inline-flex;}
}
@media (min-width:1024px){
  .mobile-menu{display:none;}
}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;padding:44px 0 56px;overflow:hidden;border-bottom:1px solid var(--line);}
.article-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.20;filter:saturate(.85);}
.article-hero::after{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 16% 8%,rgba(28,124,255,.30),transparent 65%),linear-gradient(180deg,rgba(7,12,20,.5) 0%,rgba(7,12,20,.96) 100%);}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--primary-soft);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--text);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hero-tag-row{margin-top:24px;}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:6px;font-size:12px;font-weight:600;letter-spacing:.02em;background:rgba(28,124,255,.12);color:var(--primary-soft);border:1px solid rgba(28,124,255,.25);}
.article-title{margin:16px 0 0;max-width:900px;font-size:clamp(26px,3.8vw,44px);line-height:1.24;font-weight:800;letter-spacing:-.01em;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:13px;color:var(--text-3);letter-spacing:.02em;}
.meta-row b{font-weight:600;color:var(--text-2);}
.meta-row .num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.article-lead{margin:24px 0 0;max-width:820px;padding-left:16px;border-left:2px solid rgba(28,124,255,.5);font-size:15.5px;color:var(--text-2);}

/* ---------- 正文区 ---------- */
.article-section{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;}
@media (min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:48px;}}
.article-main{min-width:0;}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--text);word-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h1,.article-body h2{font-size:24px;font-weight:700;line-height:1.42;margin:44px 0 16px;padding-left:14px;position:relative;scroll-margin-top:100px;}
.article-body h1::before,.article-body h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--primary) 0%,rgba(28,124,255,0) 100%);}
.article-body h3{font-size:18.5px;font-weight:600;line-height:1.5;margin:32px 0 12px;scroll-margin-top:100px;}
.article-body h4{font-size:16px;font-weight:600;margin:26px 0 10px;}
.article-body p{margin:0 0 1.2em;}
.article-body ul{list-style:disc;padding-left:22px;margin:0 0 1.3em;}
.article-body ol{list-style:decimal;padding-left:22px;margin:0 0 1.3em;}
.article-body li{margin:.45em 0;}
.article-body ul li::marker{color:var(--primary);}
.article-body ol li::marker{color:var(--primary);font-variant-numeric:tabular-nums;}
.article-body blockquote{margin:28px 0;padding:18px 22px;background:rgba(28,124,255,.07);border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--text-2);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:26px 0 8px;box-shadow:var(--shadow-card);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:12.5px;color:var(--text-3);text-align:center;letter-spacing:.02em;line-height:1.7;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px;line-height:1.7;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top;}
.article-body thead th{background:rgba(255,255,255,.05);color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body a{color:var(--primary-soft);border-bottom:1px solid rgba(95,168,255,.35);transition:color .2s var(--ease),border-color .2s var(--ease);}
.article-body a:hover{color:#8CC0FF;border-color:#8CC0FF;}
.article-body strong{color:#fff;font-weight:600;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;color:var(--primary-soft);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.empty-state{max-width:640px;padding:56px 28px;text-align:center;background:var(--panel);border:1px dashed rgba(255,255,255,.16);border-radius:var(--radius-card);box-shadow:var(--shadow-card);}
.empty-icon{font-size:26px;letter-spacing:6px;color:var(--primary-soft);margin-bottom:14px;}
.empty-state h2{font-size:20px;font-weight:700;margin:0 0 10px;padding:0;}
.empty-state p{margin:0 0 22px;font-size:14.5px;color:var(--text-2);}

/* ---------- 目录与侧栏 ---------- */
.article-aside{display:none;}
@media (min-width:1024px){.article-aside{display:block;}}
.aside-sticky{position:sticky;top:100px;display:grid;gap:20px;}
.toc-card,.aside-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:20px;}
.toc-title{font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--text-3);margin:0 0 14px;}
.toc-list{display:grid;gap:2px;max-height:50vh;overflow:auto;scrollbar-width:thin;}
.toc-list a{display:block;padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;font-size:13.5px;color:var(--text-2);line-height:1.5;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);}
.toc-list a:hover{color:var(--text);background:rgba(28,124,255,.08);}
.toc-list a.is-active{color:#fff;background:rgba(28,124,255,.14);border-left-color:var(--primary);}
.toc-list .toc-h3 a{padding-left:22px;font-size:13px;color:var(--text-3);}
.toc-empty{display:block;margin:0;font-size:13px;color:var(--text-3);line-height:1.7;}
.status-line{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-2);letter-spacing:.02em;}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(198,255,61,.14);}
.aside-card h3{font-size:16px;font-weight:600;margin:14px 0 12px;padding:0;}
.aside-list{display:grid;gap:9px;margin-bottom:20px;}
.aside-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.aside-list li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:rgba(28,124,255,.75);}

/* ---------- 翻页条 ---------- */
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:44px;max-width:760px;}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav-item{display:block;padding:18px 20px;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-card);transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);}
.post-nav-item:hover{border-color:rgba(28,124,255,.4);background:rgba(28,124,255,.06);transform:translateY(-2px);}
.post-nav-label{display:block;font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-bottom:8px;}
.post-nav-title{display:block;font-size:15px;font-weight:600;color:var(--text);line-height:1.6;}
.post-nav-item.next{text-align:right;}
.back-row{margin-top:24px;max-width:760px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section-head h2{font-size:26px;font-weight:700;margin:0;letter-spacing:-.01em;}
.section-head .more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.section-head .more:hover{color:var(--primary-soft);}
.section-head .more span{transition:transform .24s var(--ease);}
.section-head .more:hover span{transform:translateX(4px);}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);}}
.related-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);}
.related-card:hover{border-color:rgba(28,124,255,.4);transform:translateY(-3px);box-shadow:0 24px 48px -26px rgba(0,0,0,.85);}
.related-card:hover{transform:translateY(-3px);}
.related-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.related-card:hover .thumb img{transform:scale(1.03);}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55;margin:0;}
.card-body p{margin:0;font-size:13.5px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-link{margin-top:2px;font-size:13px;color:var(--primary-soft);display:inline-flex;align-items:center;gap:6px;}
.related-card:hover .card-link span{transform:translateX(4px);}
.card-link span{transition:transform .24s var(--ease);}

/* ---------- 页脚 ---------- */
.site-footer{background:#050A12;border-top:1px solid var(--line);}
.footer-cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:38px 0;border-bottom:1px solid var(--line);}
.footer-cta h2{font-size:22px;font-weight:700;margin:0 0 8px;}
.footer-cta p{margin:0;font-size:14px;color:var(--text-2);max-width:620px;}
.footer-cols{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0;}
@media (min-width:640px){.footer-cols{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.footer-cols{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}}
.footer-cols h4{font-size:14px;font-weight:600;margin:0 0 16px;color:var(--text);}
.footer-cols ul{display:grid;gap:10px;}
.footer-cols li a,.footer-cols li span{font-size:13.5px;color:var(--text-2);line-height:1.7;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-cols li a:hover{color:var(--primary-soft);transform:translateX(2px);display:inline-block;}
.footer-brand .brand{margin-bottom:6px;}
.footer-brand p{margin:0;font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:380px;}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;padding:20px 0 32px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);letter-spacing:.02em;}

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

/* roulang page: category2 */
:root{
    --bg:#070C14;
    --bg-soft:#0A1120;
    --panel:#0D1626;
    --panel-2:#101C30;
    --primary:#1C7CFF;
    --primary-light:#5FA8FF;
    --accent:#FF6A1A;
    --lime:#C6FF3D;
    --text:#E8F0FB;
    --muted:#93A6BF;
    --faint:#5D7290;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --radius-card:18px;
    --radius-panel:22px;
    --radius-pill:999px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
    --shadow-glow:0 0 0 1px rgba(28,124,255,.45), 0 10px 30px -8px rgba(28,124,255,.55);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
  p{margin:0}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

  body .container{
    width:100%;
    max-width:1200px;
    margin-inline:auto;
    padding-inline:20px;
  }
  @media (min-width:1024px){
    body .container{padding-inline:32px}
  }
  @media (min-width:1440px){
    body .container{max-width:1280px}
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(7,12,20,.72);
    border-bottom:1px solid transparent;
    transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(7,12,20,.86);
    backdrop-filter:blur(16px);
    border-bottom-color:var(--line);
  }
  .header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    min-height:76px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
  .brand-mark{width:36px;height:36px;display:block}
  .brand-mark svg{width:100%;height:100%;display:block}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-name{font-size:17px;font-weight:700;letter-spacing:-.01em}
  .brand-name em{font-style:normal;color:var(--primary-light)}
  .brand-sub{font-size:10px;letter-spacing:.16em;color:var(--faint);font-weight:600;margin-top:2px}
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-links a{
    position:relative;
    font-size:14.5px;
    color:var(--muted);
    padding:6px 0;
    transition:color .2s var(--ease);
    white-space:nowrap;
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:-2px;
    height:2px;
    border-radius:2px;
    background:var(--primary);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .22s var(--ease);
  }
  .nav-links a:hover{color:var(--primary-light)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.active{color:var(--text);font-weight:600}
  .nav-links a.active::after{transform:scaleX(1)}
  .header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
  .link-login{font-size:14px;color:var(--muted);transition:color .2s var(--ease)}
  .link-login:hover{color:var(--primary-light)}
  .header-divider{width:1px;height:20px;background:var(--line-strong)}
  .nav-toggle{
    display:none;
    width:42px;height:42px;
    border-radius:12px;
    border:1px solid var(--line);
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 24px;
    border-radius:var(--radius-pill);
    font-size:15px;
    font-weight:600;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,#1C7CFF 0%,#4E9BFF 100%);
    color:#fff;
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{
    background:linear-gradient(135deg,#2C88FF 0%,#5FA8FF 100%);
    box-shadow:0 0 0 1px rgba(28,124,255,.55),0 16px 38px -8px rgba(28,124,255,.6);
    transform:translateY(-1px);
  }
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{
    border:1px solid var(--line-strong);
    color:var(--text);
    background:transparent;
  }
  .btn-ghost:hover{
    border-color:var(--primary);
    background:rgba(28,124,255,.1);
    transform:translateY(-1px);
  }
  .btn-sm{height:40px;padding:0 20px;font-size:14px}
  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--muted);
    transition:color .2s var(--ease);
  }
  .link-arrow svg{transition:transform .2s var(--ease)}
  .link-arrow:hover{color:var(--primary-light)}
  .link-arrow:hover svg{transform:translateX(4px)}

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--faint);
    padding:24px 0 0;
  }
  .crumb a{color:var(--muted);transition:color .2s var(--ease)}
  .crumb a:hover{color:var(--primary-light)}
  .crumb span.sep{opacity:.6}
  .crumb .current{color:var(--text)}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    overflow:hidden;
    background-image:
      radial-gradient(900px 420px at 82% 8%, rgba(28,124,255,.28), transparent 68%),
      radial-gradient(620px 320px at 8% 92%, rgba(255,106,26,.16), transparent 70%),
      linear-gradient(180deg, rgba(7,12,20,.72) 0%, rgba(7,12,20,.92) 72%, var(--bg) 100%),
      url("/assets/images/backpic/back-1.webp");
    background-size:cover,cover,cover,cover;
    background-position:center,center,center,center;
    border-bottom:1px solid var(--line);
  }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(rgba(160,210,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(160,210,255,.05) 1px,transparent 1px);
    background-size:76px 76px;
    pointer-events:none;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 88%);
  }
  .hero-inner{position:relative;padding:44px 0 72px;max-width:780px}
  .hero-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:32px;
    padding:0 14px;
    border-radius:var(--radius-pill);
    background:rgba(28,124,255,.12);
    border:1px solid rgba(28,124,255,.28);
    color:var(--primary-light);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.02em;
  }
  .hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--lime);display:block;font-style:normal}
  .hero h1{
    margin-top:22px;
    font-size:clamp(32px,4.6vw,54px);
    font-weight:800;
    letter-spacing:-.01em;
    line-height:1.15;
  }
  .hero h1 em{font-style:normal;color:var(--primary-light)}
  .hero-sub{
    margin-top:18px;
    font-size:16.5px;
    color:var(--muted);
    max-width:600px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-stats{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:18px;
    margin-top:44px;
    padding-top:26px;
    border-top:1px solid var(--line);
    max-width:660px;
  }
  .hero-stats .num{
    font-size:24px;
    font-weight:800;
    font-variant-numeric:tabular-nums;
    letter-spacing:-.01em;
    color:var(--text);
  }
  .hero-stats .num small{font-size:13px;font-weight:600;color:var(--primary-light);margin-left:4px}
  .hero-stats .lbl{font-size:12.5px;color:var(--faint);letter-spacing:.02em;margin-top:4px}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0}
  .section.tight{padding:72px 0}
  .section-head{max-width:720px;margin-bottom:48px}
  .eyebrow{
    display:inline-block;
    font-size:12.5px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--primary-light);
    text-transform:uppercase;
    margin-bottom:14px;
  }
  .section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700}
  .section-head p{margin-top:14px;color:var(--muted);font-size:15.5px}
  .lead{
    max-width:840px;
    font-size:16.5px;
    color:var(--muted);
    line-height:1.9;
  }
  .panel{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
  }
  .divider{height:1px;background:var(--line);border:0;margin:0}

  /* 概览三卡 */
  .overview{display:grid;gap:20px;grid-template-columns:1fr;margin-top:44px}
  @media (min-width:768px){.overview{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .ov-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:26px 24px;
    box-shadow:var(--shadow-card);
    transition:border-color .22s var(--ease),transform .22s var(--ease);
  }
  .ov-card:hover{border-color:rgba(28,124,255,.4);transform:translateY(-2px)}
  .ov-icon{
    width:44px;height:44px;
    border-radius:14px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(28,124,255,.12);
    border:1px solid rgba(28,124,255,.24);
    color:var(--primary-light);
    font-size:18px;
    margin-bottom:16px;
  }
  .ov-card h3{font-size:17.5px;font-weight:600}
  .ov-card p{margin-top:10px;color:var(--muted);font-size:14.5px}

  /* ---------- zigzag ---------- */
  .zig{display:grid;gap:64px}
  .zig-row{display:grid;gap:26px;align-items:center}
  @media (min-width:900px){
    .zig-row{grid-template-columns:1.02fr .98fr;gap:56px}
    .zig-row.reverse .zig-media{order:2}
  }
  .zig-media{position:relative}
  .zig-media img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    border-radius:var(--radius-card);
    border:1px solid var(--line);
    box-shadow:var(--shadow-card);
    transition:transform .24s var(--ease),border-color .24s var(--ease);
  }
  .zig-media:hover img{transform:scale(1.012);border-color:rgba(28,124,255,.35)}
  .step-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    height:28px;
    padding:0 12px;
    border-radius:6px;
    background:rgba(255,106,26,.14);
    color:#FFB183;
    font-size:12.5px;
    font-weight:700;
    letter-spacing:.04em;
  }
  .zig-body h3{font-size:clamp(20px,2.4vw,25px);font-weight:700;margin-top:16px}
  .zig-body p{margin-top:14px;color:var(--muted);font-size:15.5px}
  .tick-list{margin-top:20px;display:grid;gap:12px}
  .tick-list li{
    position:relative;
    padding-left:30px;
    font-size:14.5px;
    color:var(--text);
  }
  .tick-list li::before{
    content:"";
    position:absolute;
    left:0;top:9px;
    width:18px;height:18px;
    border-radius:50%;
    background:rgba(198,255,61,.14);
    border:1px solid rgba(198,255,61,.34);
  }
  .tick-list li::after{
    content:"";
    position:absolute;
    left:6px;top:14px;
    width:6px;height:3px;
    border-left:1.6px solid var(--lime);
    border-bottom:1.6px solid var(--lime);
    transform:rotate(-45deg);
  }

  /* ---------- 场地类型 ---------- */
  .type-grid{display:grid;gap:20px;grid-template-columns:1fr;margin-top:12px}
  @media (min-width:640px){.type-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.type-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .type-card{
    border-radius:var(--radius-card);
    padding:24px 22px;
    border:1px solid var(--line);
    background:var(--panel);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .type-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card)}
  .type-card h3{font-size:17px;font-weight:600}
  .type-card p{margin-top:10px;font-size:14px;color:var(--muted)}
  .type-card .dot{width:10px;height:10px;border-radius:50%;display:block;margin-bottom:16px}
  .type-card.blue{border-color:rgba(28,124,255,.28);background:linear-gradient(180deg,rgba(28,124,255,.1),rgba(13,22,38,.9))}
  .type-card.blue .dot{background:var(--primary)}
  .type-card.orange{border-color:rgba(255,106,26,.28);background:linear-gradient(180deg,rgba(255,106,26,.1),rgba(13,22,38,.9))}
  .type-card.orange .dot{background:var(--accent)}
  .type-card.lime{border-color:rgba(198,255,61,.24);background:linear-gradient(180deg,rgba(198,255,61,.08),rgba(13,22,38,.9))}
  .type-card.lime .dot{background:var(--lime)}
  .type-card.slate{border-color:var(--line-strong);background:linear-gradient(180deg,rgba(160,210,255,.07),rgba(13,22,38,.9))}
  .type-card.slate .dot{background:var(--primary-light)}

  /* ---------- 规则信息 ---------- */
  .rules{display:grid;gap:20px;grid-template-columns:1fr;margin-top:12px}
  @media (min-width:768px){.rules{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .rule-item{
    background:var(--panel-2);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:24px;
  }
  .rule-item h3{font-size:16px;font-weight:600;color:var(--primary-light)}
  .rule-item p{margin-top:10px;font-size:14.5px;color:var(--muted)}
  .notice{
    margin-top:24px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px;
    padding:20px 24px;
    border-radius:var(--radius-card);
    background:rgba(28,124,255,.08);
    border:1px solid rgba(28,124,255,.24);
    font-size:14.5px;
    color:var(--text);
  }
  .notice strong{font-weight:700}
  .notice .badge{
    display:inline-flex;
    align-items:center;
    height:26px;
    padding:0 10px;
    border-radius:6px;
    background:rgba(198,255,61,.16);
    color:var(--lime);
    font-size:12px;
    font-weight:700;
    letter-spacing:.04em;
  }

  /* ---------- FAQ ---------- */
  .faq-wrap{
    margin-top:12px;
    border-radius:var(--radius-panel);
    border:1px solid var(--line);
    background:rgba(13,22,38,.72);
    backdrop-filter:blur(10px);
    padding:8px 28px;
    box-shadow:var(--shadow-card);
  }
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:20px 0;
    font-size:16px;
    font-weight:600;
    color:var(--text);
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--primary-light)}
  .faq-item summary .ico{
    position:relative;
    width:16px;height:16px;
    flex-shrink:0;
    transition:transform .24s var(--ease);
  }
  .faq-item summary .ico::before,
  .faq-item summary .ico::after{
    content:"";
    position:absolute;
    background:var(--primary-light);
    border-radius:2px;
  }
  .faq-item summary .ico::before{left:0;top:7.2px;width:16px;height:1.6px}
  .faq-item summary .ico::after{top:0;left:7.2px;width:1.6px;height:16px}
  .faq-item[open] summary .ico{transform:rotate(45deg)}
  .faq-item .answer{
    padding:0 0 22px;
    font-size:15px;
    color:var(--muted);
    max-width:960px;
  }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-panel);
    border:1px solid rgba(28,124,255,.28);
    background:
      radial-gradient(700px 320px at 88% 12%, rgba(28,124,255,.34), transparent 70%),
      linear-gradient(120deg, rgba(28,124,255,.18), rgba(13,22,38,.96) 60%);
    padding:44px 36px;
    display:grid;
    gap:26px;
  }
  @media (min-width:900px){
    .cta-band{grid-template-columns:1.4fr auto;align-items:center;padding:48px 48px}
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
  .cta-band p{margin-top:12px;color:var(--muted);font-size:15px;max-width:560px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  .related{
    margin-top:36px;
    padding-top:26px;
    border-top:1px solid var(--line);
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px 22px;
    font-size:14px;
    color:var(--faint);
  }
  .related a{color:var(--muted);transition:color .2s var(--ease)}
  .related a:hover{color:var(--primary-light)}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:8px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(7,12,20,1));
  }
  .footer-cta{
    display:grid;
    gap:22px;
    padding:48px 0 40px;
    border-bottom:1px solid var(--line);
  }
  @media (min-width:900px){
    .footer-cta{grid-template-columns:1.5fr auto;align-items:center}
  }
  .footer-cta h2{font-size:clamp(20px,2.4vw,26px);font-weight:700}
  .footer-cta p{margin-top:10px;color:var(--muted);font-size:15px;max-width:620px}
  .footer-cols{
    display:grid;
    gap:36px;
    padding:52px 0 40px;
    grid-template-columns:1fr;
  }
  @media (min-width:640px){.footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.footer-cols{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}}
  .footer-cols h4{font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:16px;color:var(--text)}
  .footer-cols ul{display:grid;gap:12px}
  .footer-cols li a,
  .footer-cols li span{font-size:14px;color:var(--muted);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
  .footer-cols li a:hover{color:var(--primary-light);transform:translateX(2px)}
  .footer-brand p{margin-top:18px;font-size:14px;color:var(--muted);max-width:440px;line-height:1.85}
  .footer-brand .brand{margin-bottom:2px}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px 24px;
    padding:22px 0 34px;
    border-top:1px solid var(--line);
    font-size:12.5px;
    color:var(--faint);
    letter-spacing:.02em;
  }

  /* ---------- 响应式导航 ---------- */
  @media (max-width:1023px){
    .nav-toggle{display:flex}
    .header-divider{display:none}
    .nav-links{
      position:fixed;
      inset:0;
      z-index:70;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      padding:104px 24px 36px;
      background:rgba(7,12,20,.97);
      backdrop-filter:blur(16px);
      opacity:0;
      visibility:hidden;
      transform:translateY(-12px);
      transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
    }
    body.nav-open .nav-links{opacity:1;visibility:visible;transform:none}
    body.nav-open{overflow:hidden}
    .nav-links a{
      width:100%;
      padding:20px 0;
      font-size:20px;
      color:var(--text);
      border-bottom:1px solid var(--line);
    }
    .nav-links a::after{display:none}
    .nav-links a.active{color:var(--primary-light)}
  }
  @media (max-width:640px){
    .section{padding:64px 0}
    .section.tight{padding:56px 0}
    .hero-inner{padding:36px 0 60px}
    .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
    .hero-stats > div:last-child{grid-column:1 / -1}
    .faq-wrap{padding:4px 18px}
    .cta-band{padding:34px 24px}
    .btn{width:100%}
    .cta-actions .btn,
    .hero-actions .btn,
    .footer-cta .btn{width:100%}
    @media (min-width:520px){ .btn{width:auto} }
  }
  @media (min-width:520px) and (max-width:640px){
    .btn{width:auto}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category3 */
:root{
    --bg:#070C14;
    --panel:#0D1626;
    --panel-2:#111C2E;
    --primary:#1C7CFF;
    --primary-light:#5FA8FF;
    --accent:#FF6A1A;
    --lime:#C6FF3D;
    --text:#E8F0FB;
    --muted:#93A6BF;
    --dim:#5D7290;
    --line:rgba(255,255,255,.08);
    --radius-card:18px;
    --radius-float:22px;
    --radius-input:12px;
    --radius-tag:6px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
    --shadow-glow:0 0 0 1px rgba(28,124,255,.45),0 10px 30px -8px rgba(28,124,255,.55);
    --num-font:"DIN Alternate","JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  h1,h2,h3{letter-spacing:-.01em;line-height:1.25}
  .num{font-family:var(--num-font);font-variant-numeric:tabular-nums}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:1024px){.container{padding:0 32px}}
  @media(min-width:1440px){.container{max-width:1280px}}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .24s ease-out,border-color .24s ease-out,backdrop-filter .24s ease-out;
  }
  .site-header.scrolled{
    background:rgba(9,14,24,.84);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
  .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .brand-mark{width:36px;height:36px;display:block;flex:0 0 36px}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:-.01em}
  .brand-name em{font-style:normal;color:var(--primary)}
  .brand-sub{font-size:10px;letter-spacing:.18em;color:var(--dim);margin-top:3px}
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-links a{
    position:relative;padding:6px 0;font-size:14.5px;color:var(--muted);
    transition:color .24s ease-out;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
    background:var(--primary);transform:scaleX(0);transform-origin:left;
    transition:transform .24s ease-out;
  }
  .nav-links a:hover{color:var(--primary)}
  .nav-links a.active{color:var(--text);font-weight:600}
  .nav-links a.active::after{transform:scaleX(1)}
  .nav-actions{display:flex;align-items:center;gap:18px}
  .nav-login{font-size:14.5px;color:var(--muted);transition:color .24s ease-out}
  .nav-login:hover{color:var(--primary)}
  .nav-divider{width:1px;height:20px;background:var(--line)}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);border-radius:2px;transition:transform .24s ease-out,opacity .24s ease-out}
  .nav-toggle.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
  .nav-toggle.open span:nth-child(2){opacity:0}
  .nav-toggle.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

  @media(max-width:1023px){
    .nav-links,.nav-divider,.nav-login{display:none}
    .nav-toggle{display:flex}
    .brand-name{font-size:15.5px}
  }
  @media(max-width:639px){
    .nav-actions .btn{display:none}
    .brand-sub{display:none}
  }

  .mobile-menu{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:55;
    background:rgba(7,12,20,.98);
    backdrop-filter:blur(12px);
    padding:104px 24px 40px;
    display:none;flex-direction:column;
    overflow-y:auto;
  }
  .mobile-menu.open{display:flex}
  .mobile-menu a.m-link{
    display:block;padding:20px 0;font-size:20px;font-weight:700;color:var(--text);
    border-bottom:1px solid var(--line);
  }
  .mobile-menu a.m-link.active{color:var(--primary)}
  .mobile-menu .m-foot{margin-top:32px;display:flex;flex-direction:column;gap:14px}
  .mobile-menu .m-foot a{font-size:14px;color:var(--muted)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-weight:600;font-size:15px;padding:13px 26px;
    border:1px solid transparent;
    transition:transform .24s ease-out,box-shadow .24s ease-out,background .24s ease-out,border-color .24s ease-out,filter .24s ease-out,color .24s ease-out;
  }
  .btn svg{transition:transform .24s ease-out}
  .btn-primary{
    background:linear-gradient(135deg,#1C7CFF,#4E9BFF);
    color:#fff;box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(28,124,255,.62),0 18px 42px -8px rgba(28,124,255,.7)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
  .btn-ghost:hover{border-color:var(--primary);background:rgba(28,124,255,.10)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{padding:10px 20px;font-size:14px}
  .btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
    outline:2px solid var(--primary);outline-offset:2px;
  }
  .text-link{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;transition:color .24s ease-out}
  .text-link svg{transition:transform .24s ease-out}
  .text-link:hover{color:var(--primary)}
  .text-link:hover svg{transform:translateX(4px)}

  /* ---------- 通用 ---------- */
  .sec{padding:96px 0}
  @media(max-width:1023px){.sec{padding:72px 0}}
  @media(max-width:639px){.sec{padding:56px 0}}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
  @media(max-width:639px){.sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}}
  .sec-title{font-size:clamp(23px,2.6vw,32px);font-weight:700}
  .sec-sub{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:64ch}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;letter-spacing:.16em;color:var(--primary-light);
    text-transform:uppercase;margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:22px;height:1.5px;background:var(--primary);display:block}

  .card{
    position:relative;background:var(--panel);border:1px solid var(--line);
    border-radius:var(--radius-card);box-shadow:var(--shadow-card);
    transition:border-color .24s ease-out,transform .24s ease-out,box-shadow .24s ease-out;
  }
  .card::before{
    content:"";position:absolute;left:16px;right:16px;top:0;height:1px;
    background:rgba(160,210,255,.10);
  }
  .card-pad{padding:30px}
  @media(max-width:639px){.card-pad{padding:22px}}
  .card-hover:hover{border-color:rgba(28,124,255,.4);transform:translateY(-1px)}
  .card-title{font-size:18px;font-weight:600;margin-bottom:10px}
  .card-text{color:var(--muted);font-size:15px}

  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 10px;border-radius:var(--radius-tag);
    font-size:12px;letter-spacing:.02em;
    background:rgba(28,124,255,.12);color:var(--primary-light);
    border:1px solid rgba(28,124,255,.22);
  }
  .tag-accent{background:rgba(255,106,26,.12);color:#FFB27A;border-color:rgba(255,106,26,.26)}
  .tag-lime{background:rgba(198,255,61,.10);color:var(--lime);border-color:rgba(198,255,61,.28)}
  .tag-plain{background:rgba(255,255,255,.05);color:var(--muted);border-color:var(--line)}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:56px 0 76px;
    background-image:linear-gradient(180deg,rgba(7,12,20,.90),rgba(7,12,20,.97)),url(/assets/images/backpic/back-2.png);
    background-size:cover;background-position:center;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(680px 380px at 12% 8%,rgba(28,124,255,.20),transparent 68%),
      radial-gradient(520px 320px at 92% 82%,rgba(255,106,26,.12),transparent 70%);
    pointer-events:none;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;opacity:.35;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:88px 88px;
    mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
    -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  }
  .page-hero > .container{position:relative;z-index:2}
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--dim);margin-bottom:26px}
  .breadcrumb a{color:var(--muted);transition:color .24s}
  .breadcrumb a:hover{color:var(--primary)}
  .breadcrumb .sep{opacity:.5}
  .breadcrumb .cur{color:var(--text)}

  .hero-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:center}
  @media(max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:34px}}
  .hero-h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;letter-spacing:-.015em;line-height:1.16}
  .hero-h1 span{color:var(--primary)}
  .hero-lead{margin-top:22px;font-size:16.5px;color:var(--muted);max-width:62ch;line-height:1.9}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
  .hero-stat .v{font-size:26px;font-weight:800;color:#fff;font-family:var(--num-font)}
  .hero-stat .v em{font-style:normal;color:var(--accent)}
  .hero-stat .k{font-size:13px;color:var(--dim);margin-top:4px;letter-spacing:.02em}

  .hero-media{
    position:relative;border-radius:var(--radius-float);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-card);
  }
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
  .hero-media figcaption{
    position:absolute;left:0;right:0;bottom:0;
    padding:30px 22px 16px;font-size:13px;color:var(--muted);
    background:linear-gradient(180deg,transparent,rgba(7,12,20,.92));
  }
  .hero-badge{
    position:absolute;top:16px;left:16px;z-index:3;
    display:inline-flex;align-items:center;gap:7px;
    padding:7px 13px;border-radius:999px;font-size:12.5px;
    background:rgba(9,15,26,.72);border:1px solid var(--line);backdrop-filter:blur(8px);color:var(--text);
  }
  .dot-live{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 10px rgba(198,255,61,.8)}

  /* ---------- 宽窄混排栅格 ---------- */
  .mix{display:grid;grid-template-columns:1.55fr 1fr;gap:24px;align-items:start}
  .mix-rev{display:grid;grid-template-columns:1fr 1.55fr;gap:24px;align-items:start}
  @media(max-width:900px){.mix,.mix-rev{grid-template-columns:1fr}}
  .stack{display:flex;flex-direction:column;gap:24px}
  .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  @media(max-width:639px){.grid-2{grid-template-columns:1fr}}

  /* ---------- 票种行 ---------- */
  .seat-list{margin-top:8px}
  .seat-row{
    display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
    padding:20px 0;border-top:1px solid var(--line);
  }
  .seat-row:first-child{border-top:0}
  .seat-name{font-size:16.5px;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .seat-desc{color:var(--muted);font-size:14.5px;margin-top:6px;max-width:52ch}
  .seat-price{font-family:var(--num-font);font-size:17px;font-weight:700;color:var(--primary-light);white-space:nowrap}
  @media(max-width:639px){.seat-row{flex-direction:column;gap:8px}}

  /* ---------- 步骤 ---------- */
  .step{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0;padding-bottom:0}
  .step:first-child{padding-top:4px}
  .step-idx{
    flex:0 0 34px;width:34px;height:34px;border-radius:50%;
    display:grid;place-items:center;font-family:var(--num-font);font-size:14px;font-weight:700;
    background:rgba(255,106,26,.14);color:var(--accent);border:1px solid rgba(255,106,26,.3);
  }
  .step h3{font-size:17px;font-weight:600;margin-bottom:6px}
  .step p{color:var(--muted);font-size:15px}

  .note-card{display:flex;gap:14px;align-items:flex-start}
  .note-icon{
    flex:0 0 38px;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:rgba(28,124,255,.12);border:1px solid rgba(28,124,255,.22);color:var(--primary-light);
  }
  .note-card h4{font-size:15.5px;font-weight:600;margin-bottom:4px}
  .note-card p{color:var(--muted);font-size:14px}

  /* ---------- 指标 ---------- */
  .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  @media(max-width:1023px){.metrics{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:520px){.metrics{grid-template-columns:1fr}}
  .metric{padding:26px 24px}
  .metric .v{font-family:var(--num-font);font-size:clamp(28px,3.2vw,38px);font-weight:800;color:#fff;line-height:1.1}
  .metric .v em{font-style:normal;font-size:16px;color:var(--accent);margin-left:4px}
  .metric .k{font-size:13px;color:var(--dim);margin-top:10px;letter-spacing:.02em}

  /* ---------- 须知列表 ---------- */
  .check-list{display:flex;flex-direction:column;gap:14px;margin-top:6px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--muted);font-size:15px}
  .check-list li strong{color:var(--text);font-weight:600}
  .check-mark{
    flex:0 0 20px;width:20px;height:20px;border-radius:50%;margin-top:5px;
    display:grid;place-items:center;background:rgba(28,124,255,.14);color:var(--primary-light);
  }
  .cover-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
  .cover-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out}
  .cover-figure:hover img{transform:scale(1.03)}
  .cover-figure figcaption{padding:14px 18px;font-size:13px;color:var(--dim);background:var(--panel)}

  /* ---------- FAQ ---------- */
  .faq-wrap{
    background:rgba(13,22,38,.72);
    backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
    border:1px solid var(--line);border-radius:var(--radius-float);
    padding:6px 30px 12px;
    box-shadow:var(--shadow-card);
  }
  @media(max-width:639px){.faq-wrap{padding:4px 20px 10px}}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
    transition:color .24s ease-out;
  }
  .faq-q:hover{color:var(--primary-light)}
  .faq-icon{
    flex:0 0 22px;width:22px;height:22px;display:grid;place-items:center;
    color:var(--primary-light);transition:transform .24s ease-out;
  }
  .faq-item.open .faq-icon{transform:rotate(135deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
  .faq-a-inner{padding:0 0 22px;color:var(--muted);font-size:15px;max-width:78ch}

  /* ---------- 相关分类 ---------- */
  .rel-wrap{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
  .rel-link{
    display:inline-flex;align-items:center;gap:8px;
    padding:11px 18px;border-radius:999px;font-size:14.5px;
    border:1px solid var(--line);background:var(--panel);color:var(--muted);
    transition:color .24s ease-out,border-color .24s ease-out,background .24s ease-out;
  }
  .rel-link:hover{color:var(--primary);border-color:rgba(28,124,255,.45);background:rgba(28,124,255,.08)}
  .rel-link.current{color:var(--text);border-color:rgba(28,124,255,.5);background:rgba(28,124,255,.12);cursor:default}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    background-image:linear-gradient(90deg,rgba(7,12,20,.94),rgba(7,12,20,.74)),url(/assets/images/backpic/back-1.webp);
    background-size:cover;background-position:center;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:64px 0}
  @media(max-width:767px){.cta-inner{flex-direction:column;align-items:flex-start;gap:22px;padding:52px 0}}
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
  .cta-inner p{color:var(--muted);font-size:15.5px;margin-top:12px;max-width:56ch}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#060A11;border-top:1px solid var(--line)}
  .footer-cta{
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    padding:44px 0;border-bottom:1px solid var(--line);
  }
  @media(max-width:767px){.footer-cta{flex-direction:column;align-items:flex-start;gap:20px}}
  .footer-cta h2{font-size:22px;font-weight:700}
  .footer-cta p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:60ch}
  .footer-cols{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px}
  @media(max-width:1023px){.footer-cols{grid-template-columns:1fr 1fr;gap:34px}}
  @media(max-width:639px){.footer-cols{grid-template-columns:1fr;padding:44px 0 32px}}
  .footer-brand p{color:var(--dim);font-size:13.5px;margin-top:16px;max-width:42ch;line-height:1.85}
  .footer-cols h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
  .footer-cols ul li{margin-bottom:12px}
  .footer-cols ul li a,.footer-cols ul li span{
    color:var(--muted);font-size:14px;transition:color .24s ease-out,transform .24s ease-out;display:inline-block;
  }
  .footer-cols ul li a:hover{color:var(--primary);transform:translateX(-2px)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    padding:22px 0 30px;border-top:1px solid var(--line);font-size:13px;color:var(--dim);
  }
  .footer .brand-name{font-size:16px}

  @media(prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  }

/* roulang page: category4 */
:root{
    --bg:#070C14;
    --panel:#0D1626;
    --panel-2:#111C2E;
    --primary:#1C7CFF;
    --primary-light:#5FA8FF;
    --accent:#FF6A1A;
    --lime:#C6FF3D;
    --text:#E8F0FB;
    --text-2:#93A6BF;
    --text-3:#5D7290;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --radius-card:18px;
    --radius-float:22px;
    --radius-pill:999px;
    --radius-input:12px;
    --shadow-card:0 18px 40px -24px rgba(0,0,0,.7);
    --shadow-glow:0 0 0 1px rgba(28,124,255,.45),0 10px 30px -8px rgba(28,124,255,.55);
    --container:1200px;
    --t:200ms cubic-bezier(.22,.61,.36,1);
    --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t),transform var(--t);}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,h5{margin:0;line-height:1.25;font-weight:700;letter-spacing:-.01em;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  table{border-collapse:collapse;width:100%;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px;}
  ::selection{background:rgba(28,124,255,.32);color:#fff;}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container{padding:0 32px;}}
  @media (min-width:1440px){:root{--container:1280px;}}

  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(7,12,20,.82);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid transparent;
    transition:background var(--t),border-color var(--t),box-shadow var(--t);
  }
  .site-header.scrolled{
    background:rgba(9,14,24,.74);
    border-bottom-color:var(--line);
    box-shadow:0 18px 40px -32px rgba(0,0,0,.9);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}

  .brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto;}
  .brand-mark{width:34px;height:34px;display:block;flex:0 0 auto;}
  .brand-mark svg{width:100%;height:100%;display:block;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:17px;font-weight:800;letter-spacing:.01em;color:var(--text);}
  .brand-name em{font-style:normal;color:var(--primary-light);}
  .brand-name::after{content:".";color:var(--primary);font-weight:800;}
  .brand-sub{font-size:9.5px;letter-spacing:.22em;color:var(--text-3);text-transform:uppercase;margin-top:2px;}

  .nav-links{display:flex;align-items:center;gap:26px;}
  .nav-links a{
    position:relative;
    font-size:14px;
    color:var(--text-2);
    padding:6px 0;
    white-space:nowrap;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
    background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
  }
  .nav-links a:hover{color:var(--primary-light);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--text);font-weight:600;}
  .nav-links a.active::after{transform:scaleX(1);}

  .header-actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
  .link-login{font-size:14px;color:var(--text-2);}
  .link-login:hover{color:var(--primary-light);}
  .action-divider{width:1px;height:18px;background:var(--line-strong);display:block;}

  .menu-toggle{display:none;width:40px;height:40px;border-radius:10px;flex-direction:column;justify-content:center;gap:5px;align-items:center;}
  .menu-toggle span{display:block;width:20px;height:1.6px;background:var(--text);border-radius:2px;transition:transform var(--t),opacity var(--t);}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
  .menu-toggle:hover span{background:var(--primary-light);}

  .mobile-menu{border-top:1px solid var(--line);background:rgba(7,12,20,.97);backdrop-filter:blur(14px);}
  .mobile-nav{display:flex;flex-direction:column;padding:8px 0;}
  .mobile-nav a{padding:16px 0;font-size:18px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);}
  .mobile-nav a:last-child{border-bottom:0;}
  .mobile-nav a.active{color:var(--primary-light);}
  .mobile-foot{display:flex;flex-direction:column;gap:12px;padding:20px 0 28px;}
  .mobile-foot a{font-size:14px;color:var(--text-2);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
    transition:transform var(--t),box-shadow var(--t),background-color var(--t),border-color var(--t),filter var(--t),color var(--t);
  }
  .btn-primary{
    background:linear-gradient(135deg,#1C7CFF,#4E9BFF);
    color:#fff;
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(28,124,255,.6),0 18px 38px -8px rgba(28,124,255,.6);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.18);color:var(--text);}
  .btn-ghost:hover{border-color:var(--primary);background:rgba(28,124,255,.10);color:var(--primary-light);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-sm{padding:9px 18px;font-size:14px;}
  .btn-block{width:100%;}
  .btn[disabled],.btn.is-disabled{opacity:.55;filter:saturate(.6);box-shadow:none;cursor:not-allowed;}

  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--text-2);}
  .text-link:hover{color:var(--primary-light);}
  .text-link .arrow{transition:transform var(--t);}
  .text-link:hover .arrow{transform:translateX(4px);}

  /* ---------- 徽标 / 标签 ---------- */
  .badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:6px;font-size:12.5px;font-weight:600;letter-spacing:.02em;}
  .badge-primary{background:rgba(28,124,255,.12);color:var(--primary-light);}
  .badge-accent{background:rgba(255,106,26,.14);color:#FF9354;}
  .badge-lime{background:rgba(198,255,61,.14);color:var(--lime);}
  .badge-plain{background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line);}

  .dot{width:7px;height:7px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(198,255,61,.16);display:inline-block;}

  /* ---------- 区块 ---------- */
  .section{padding:56px 0;}
  @media (min-width:768px){.section{padding:72px 0;}}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-alt{background:linear-gradient(180deg,rgba(13,22,38,.55),rgba(7,12,20,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
  .section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;}
  .section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:680px;}
  .eyebrow{display:block;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-3);margin-bottom:10px;font-family:var(--mono);}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-3);}
  .breadcrumb a{color:var(--text-2);}
  .breadcrumb a:hover{color:var(--primary-light);}
  .breadcrumb .sep{color:var(--text-3);opacity:.6;}
  .breadcrumb .current{color:var(--primary-light);font-weight:600;}

  /* ---------- 页首 ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    padding:44px 0 76px;
    background-image:linear-gradient(180deg,rgba(7,12,20,.88),rgba(7,12,20,.97)),url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      radial-gradient(680px 320px at 16% 6%,rgba(28,124,255,.22),transparent 70%),
      radial-gradient(520px 300px at 92% 88%,rgba(255,106,26,.12),transparent 72%),
      repeating-linear-gradient(90deg,rgba(255,255,255,.032) 0 1px,transparent 1px 96px),
      repeating-linear-gradient(0deg,rgba(255,255,255,.026) 0 1px,transparent 1px 96px);
  }
  .page-hero .container{position:relative;z-index:1;}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:38px;align-items:center;margin-top:30px;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px;}}
  .page-hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.15;margin-top:18px;}
  .page-hero h1 .hl{color:var(--primary-light);}
  .lead{color:var(--text-2);font-size:16px;line-height:1.9;margin-top:18px;max-width:620px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

  .hero-media{
    position:relative;border-radius:var(--radius-float);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-card);
    background:var(--panel);
  }
  .hero-media::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;z-index:2;
    background:linear-gradient(90deg,transparent,rgba(160,210,255,.45),transparent);
  }
  .hero-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .hero-media .media-caption{
    position:absolute;left:0;right:0;bottom:0;padding:18px 20px;
    background:linear-gradient(180deg,rgba(7,12,20,0),rgba(7,12,20,.92));
    display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);
  }

  /* ---------- 指标卡组 ---------- */
  .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  @media (min-width:900px){.metric-grid{grid-template-columns:repeat(4,1fr);gap:22px;}}
  .metric-card{
    position:relative;overflow:hidden;
    background:linear-gradient(180deg,var(--panel),rgba(13,22,38,.55));
    border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px 22px;box-shadow:var(--shadow-card);
    transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  }
  .metric-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:rgba(160,210,255,.12);}
  .metric-card:hover{transform:translateY(-3px);border-color:rgba(28,124,255,.4);box-shadow:0 24px 46px -26px rgba(0,0,0,.85);}
  .metric-num{font-family:var(--mono);font-size:clamp(28px,3.2vw,38px);font-weight:800;letter-spacing:-.02em;color:var(--text);display:flex;align-items:baseline;gap:6px;}
  .metric-num small{font-size:14px;font-weight:600;color:var(--primary-light);font-family:inherit;}
  .metric-label{margin-top:8px;font-size:14px;font-weight:600;color:var(--text);}
  .metric-note{margin-top:6px;font-size:12.5px;color:var(--text-3);line-height:1.7;}

  /* ---------- 等级对照表 ---------- */
  .table-card{
    border:1px solid var(--line);border-radius:var(--radius-float);
    background:linear-gradient(180deg,var(--panel),rgba(13,22,38,.6));
    box-shadow:var(--shadow-card);overflow:hidden;
  }
  .table-scroll{overflow-x:auto;overscroll-behavior-x:contain;}
  .benefit-table{min-width:820px;}
  .benefit-table thead th{
    padding:18px 20px;font-size:13.5px;font-weight:700;color:var(--text-2);
    text-align:center;border-bottom:1px solid var(--line-strong);
    border-top:1px solid var(--line-strong);letter-spacing:.02em;white-space:nowrap;
  }
  .benefit-table thead th:first-child{text-align:left;color:var(--text);}
  .benefit-table tbody th{
    padding:17px 20px;font-size:14.5px;font-weight:600;color:var(--text);
    text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  .benefit-table tbody td{
    padding:17px 20px;font-size:14px;color:var(--text-2);
    text-align:center;border-bottom:1px solid var(--line);
    font-family:var(--mono);letter-spacing:.01em;
  }
  .benefit-table tbody tr:nth-child(even){background:rgba(255,255,255,.018);}
  .benefit-table tbody tr:last-child th,.benefit-table tbody tr:last-child td{border-bottom:1px solid var(--line-strong);}
  .benefit-table tbody tr:hover{background:rgba(28,124,255,.055);}
  .benefit-table tbody tr:hover th{color:var(--primary-light);}
  .col-rec{background:rgba(28,124,255,.10);box-shadow:inset 1px 0 0 rgba(28,124,255,.32),inset -1px 0 0 rgba(28,124,255,.32);}
  .benefit-table thead th.col-rec{color:var(--text);position:relative;}
  .rec-tag{
    display:inline-flex;align-items:center;margin-left:8px;padding:2px 8px;border-radius:6px;
    background:rgba(198,255,61,.16);color:var(--lime);font-size:11.5px;font-weight:700;font-family:inherit;
  }
  .table-foot{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
    padding:16px 22px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);
  }

  /* ---------- 权益清单 ---------- */
  .benefit-list{display:grid;grid-template-columns:1fr;gap:14px;}
  @media (min-width:900px){.benefit-list{grid-template-columns:repeat(2,1fr);gap:16px 22px;}}
  .benefit-row{
    display:flex;gap:16px;align-items:flex-start;
    padding:22px;border-radius:var(--radius-card);
    background:var(--panel);border:1px solid var(--line);
    transition:transform var(--t),border-color var(--t),background-color var(--t),box-shadow var(--t);
  }
  .benefit-row:hover{transform:translateY(-2px);border-color:rgba(28,124,255,.4);background:var(--panel-2);box-shadow:var(--shadow-card);}
  .benefit-icon{
    flex:0 0 auto;width:42px;height:42px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(28,124,255,.12);border:1px solid rgba(28,124,255,.28);color:var(--primary-light);
  }
  .benefit-icon svg{width:20px;height:20px;}
  .benefit-row h3{font-size:17px;font-weight:600;margin-bottom:6px;}
  .benefit-row p{font-size:14px;color:var(--text-2);line-height:1.8;}

  /* ---------- 流程 ---------- */
  .flow{display:grid;grid-template-columns:1fr;gap:18px;counter-reset:step;}
  @media (min-width:768px){.flow{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.flow{grid-template-columns:repeat(4,1fr);gap:22px;}}
  .flow-step{
    position:relative;padding:26px 22px 24px;
    border-radius:var(--radius-card);
    background:linear-gradient(180deg,rgba(13,22,38,.9),rgba(13,22,38,.5));
    border:1px solid var(--line);
    transition:border-color var(--t),transform var(--t);
  }
  .flow-step:hover{border-color:rgba(255,106,26,.4);transform:translateY(-2px);}
  .flow-step .num{
    width:44px;height:44px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-size:16px;font-weight:800;
    color:var(--accent);background:rgba(255,106,26,.10);
    border:1px solid rgba(255,106,26,.35);margin-bottom:16px;
  }
  .flow-step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
  .flow-step p{font-size:14px;color:var(--text-2);line-height:1.8;}
  .flow-step::after{
    content:"";position:absolute;top:48px;right:-12px;width:22px;height:1px;
    background:linear-gradient(90deg,rgba(255,106,26,.5),transparent);display:none;
  }
  @media (min-width:1024px){.flow-step::after{display:block;}.flow-step:last-child::after{display:none;}}

  /* ---------- FAQ ---------- */
  .faq-wrap{
    background:rgba(13,22,38,.72);
    border:1px solid var(--line);
    border-radius:var(--radius-float);
    padding:6px 24px;
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    box-shadow:var(--shadow-card);
  }
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:last-child{border-bottom:0;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:22px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
    transition:color var(--t);
  }
  .faq-q:hover{color:var(--primary-light);}
  .faq-q .icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line-strong);color:var(--text-2);
    transition:transform var(--t),color var(--t),border-color var(--t);
  }
  .faq-item.open .faq-q .icon{transform:rotate(180deg);color:var(--primary-light);border-color:rgba(28,124,255,.5);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height 240ms cubic-bezier(.22,.61,.36,1);}
  .faq-a p{padding:0 44px 22px 0;font-size:15px;color:var(--text-2);line-height:1.9;}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    position:relative;overflow:hidden;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
    padding:38px 28px;border-radius:var(--radius-float);
    border:1px solid var(--line);
    background-image:linear-gradient(120deg,rgba(7,12,20,.94),rgba(7,12,20,.72)),url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  @media (min-width:768px){.cta-band{padding:48px 44px;}}
  .cta-band h2{font-size:clamp(21px,2.6vw,30px);}
  .cta-band p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:620px;}
  .cta-band .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

  .related-cats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .related-cats a{
    display:inline-flex;align-items:center;gap:8px;
    padding:9px 16px;border-radius:var(--radius-pill);
    border:1px solid var(--line);background:var(--panel);
    font-size:13.5px;color:var(--text-2);
  }
  .related-cats a:hover{border-color:rgba(28,124,255,.5);color:var(--primary-light);transform:translateY(-1px);}

  /* ---------- 页脚 ---------- */
  .site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(13,22,38,.55),rgba(7,12,20,1));padding-top:56px;margin-top:8px;}
  .footer-cta{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
    padding:32px;
    border-radius:var(--radius-float);
    border:1px solid var(--line);
    background:linear-gradient(120deg,rgba(28,124,255,.14),rgba(13,22,38,.7));
  }
  .footer-cta h2{font-size:clamp(20px,2.4vw,26px);}
  .footer-cta p{color:var(--text-2);font-size:14.5px;margin-top:10px;max-width:560px;}
  .footer-cols{display:grid;grid-template-columns:1fr;gap:38px;padding:56px 0 40px;}
  @media (min-width:768px){.footer-cols{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-cols{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px;}}
  .footer-brand p{font-size:13.5px;color:var(--text-2);line-height:1.9;margin-top:16px;max-width:380px;}
  .site-footer h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
  .site-footer ul{display:flex;flex-direction:column;gap:11px;}
  .site-footer li{font-size:13.5px;color:var(--text-2);}
  .site-footer ul a{color:var(--text-2);display:inline-block;}
  .site-footer ul a:hover{color:var(--primary-light);transform:translateX(2px);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    padding:22px 0 34px;border-top:1px solid var(--line);
    font-size:12.5px;color:var(--text-3);
  }

  @media (max-width:1023px){
    .nav-links,.header-actions{display:none;}
    .menu-toggle{display:flex;}
  }
  @media (max-width:639px){
    .header-inner{height:68px;}
    .page-hero{padding:30px 0 58px;}
    .metric-grid{grid-template-columns:1fr;}
    .faq-wrap{padding:6px 18px;}
    .faq-a p{padding-right:0;}
    .footer-cta{padding:26px 22px;}
    .cta-band{padding:30px 22px;}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  }

/* roulang page: category5 */
:root{
  --bg:#070C14;
  --panel:#0D1626;
  --panel-2:#101B2E;
  --primary:#1C7CFF;
  --primary-light:#5FA8FF;
  --accent:#FF6A1A;
  --lime:#C6FF3D;
  --text:#E8F0FB;
  --text-2:#93A6BF;
  --text-3:#5D7290;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(160,210,255,.14);
  --r-card:18px;
  --r-float:22px;
  --r-btn:999px;
  --r-input:12px;
  --r-tag:6px;
  --sh-card:0 18px 40px -24px rgba(0,0,0,.7);
  --sh-glow:0 0 0 1px rgba(28,124,255,.45), 0 10px 30px -8px rgba(28,124,255,.55);
  --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);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
input,select,textarea{background:none;border:none;outline:none;}
::selection{background:rgba(28,124,255,.35);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  height:76px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.scrolled{
  background:rgba(7,12,20,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;width:100%;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{width:40px;height:40px;flex-shrink:0;}
.brand-mark svg{width:100%;height:100%;display:block;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.brand-name em{font-style:normal;color:var(--primary-light);}
.brand-sub{font-size:10px;letter-spacing:.16em;color:var(--text-3);font-weight:500;}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto;}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--text-2);
  padding-bottom:6px;
  transition:color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::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 .22s var(--ease);
}
.nav-links a:hover{color:var(--primary);}
.nav-links a.active{color:var(--text);}
.nav-links a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:8px;}
.header-actions .hair{width:1px;height:22px;background:var(--line-2);}
.login-link{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.login-link:hover{color:var(--primary);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.02);cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text);border-radius:2px;margin:3px 0;transition:transform .2s var(--ease);}
.mobile-menu{
  display:none;position:fixed;inset:76px 0 0 0;background:rgba(7,12,20,.98);
  backdrop-filter:blur(16px);z-index:55;padding:28px 20px 40px;overflow-y:auto;
}
.mobile-menu.open{display:block;}
.mobile-menu a.m-link{
  display:block;font-size:22px;font-weight:600;padding:18px 4px;border-bottom:1px solid var(--line);color:var(--text);
}
.mobile-menu a.m-link.active{color:var(--primary-light);}
.mobile-menu .m-sub{padding-top:26px;display:flex;flex-wrap:wrap;gap:14px 24px;}
.mobile-menu .m-sub a{font-size:14px;color:var(--text-3);}

@media (max-width:1023px){
  .nav-links,.header-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;flex-direction:column;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;font-size:15px;
  padding:13px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#1C7CFF 0%,#4E9BFF 100%);
  color:#fff;box-shadow:var(--sh-glow);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(28,124,255,.5),0 16px 38px -10px rgba(28,124,255,.62);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--text);background:rgba(255,255,255,.01);}
.btn-ghost:hover{border-color:var(--primary);background:rgba(28,124,255,.10);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);font-size:14px;font-weight:600;transition:color .2s var(--ease);}
.link-arrow svg{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--primary);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
@media (max-width:1023px){.section{padding:72px 0;}}
@media (max-width:640px){.section{padding:56px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
.section-head p{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;color:var(--primary-light);
  text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:block;}

/* ---------- 面包屑 & 页头 ---------- */
.crumb{padding-top:34px;font-size:13px;color:var(--text-3);display:flex;gap:10px; align-items:center;flex-wrap:wrap;}
.crumb a{color:var(--text-3);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--primary);}
.crumb span.sep{color:rgba(255,255,255,.18);}

.page-hero{
  position:relative;overflow:hidden;
  padding:48px 0 72px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(760px 420px at 78% 8%, rgba(28,124,255,.20), transparent 68%),
    radial-gradient(620px 380px at 12% 92%, rgba(255,106,26,.10), transparent 70%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  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:72px 72px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
}
.page-hero .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;margin-top:28px;}
@media (max-width:1023px){.hero-grid{grid-template-columns:1fr;gap:34px;}}
.page-hero h1{
  font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.16;letter-spacing:-.015em;
}
.page-hero h1 em{font-style:normal;color:var(--primary-light);}
.lede{margin-top:20px;color:var(--text-2);font-size:16px;line-height:1.9;max-width:640px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-tag);font-size:12.5px;letter-spacing:.02em;
  background:rgba(28,124,255,.12);color:var(--primary-light);border:1px solid rgba(28,124,255,.22);
}
.tag.warm{background:rgba(255,106,26,.12);color:#FFA36B;border-color:rgba(255,106,26,.24);}
.tag.lime{background:rgba(198,255,61,.10);color:var(--lime);border-color:rgba(198,255,61,.22);}
.hero-figure{
  position:relative;border-radius:var(--r-float);overflow:hidden;
  border:1px solid var(--line-2);box-shadow:var(--sh-card);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-figure .mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,.05) 0%,rgba(7,12,20,.72) 100%);}
.hero-figure .cap{
  position:absolute;left:20px;right:20px;bottom:18px;
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);
}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(198,255,61,.16);flex-shrink:0;}

/* ---------- 问题导航条 ---------- */
.topic-bar{display:flex;flex-wrap:wrap;gap:12px;margin-top:-34px;position:relative;z-index:2;}
.topic-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:var(--r-btn);font-size:14px;font-weight:600;
  background:var(--panel);border:1px solid var(--line);color:var(--text-2);
  transition:all .2s var(--ease);cursor:pointer;
}
.topic-chip:hover{border-color:rgba(28,124,255,.5);color:var(--primary-light);transform:translateY(-1px);}
.topic-chip .num{font-variant-numeric:tabular-nums;color:var(--text-3);font-size:12.5px;}

/* ---------- FAQ ---------- */
.faq-shell{
  background:linear-gradient(180deg,rgba(160,210,255,.06) 0%,rgba(13,22,38,.92) 100%);
  border:1px solid var(--line-2);border-radius:var(--r-float);
  padding:12px 30px;box-shadow:var(--sh-card);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
@media (max-width:640px){.faq-shell{padding:6px 18px;border-radius:var(--r-card);}}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:18px;
  padding:22px 0;background:none;border:none;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--text);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary-light);}
.faq-q .idx{
  font-variant-numeric:tabular-nums;font-size:13px;color:var(--accent);
  font-weight:700;padding-top:5px;min-width:26px;
}
.faq-q .plus{
  margin-left:auto;flex-shrink:0;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;
  position:relative;transition:transform .24s var(--ease),border-color .2s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
}
.faq-q .plus::before{width:11px;height:1.6px;}
.faq-q .plus::after{width:1.6px;height:11px;transition:opacity .2s var(--ease);}
.faq-item.open .faq-q{color:var(--primary-light);}
.faq-item.open .plus{transform:rotate(180deg);border-color:var(--primary);}
.faq-item.open .plus::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a-inner{padding:0 0 24px 44px;color:var(--text-2);font-size:15px;line-height:1.95;}
@media (max-width:640px){.faq-a-inner{padding-left:0;}}
.faq-a-inner strong{color:var(--text);font-weight:600;}

/* ---------- 自助排查步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:860px){.steps{grid-template-columns:1fr;}}
.step-card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 26px 28px;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{border-color:rgba(28,124,255,.4);transform:translateY(-3px);box-shadow:var(--sh-card);}
.step-card .ribbon{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  color:var(--accent);letter-spacing:.06em;margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step-card .ribbon i{width:24px;height:24px;border-radius:50%;border:1px solid rgba(255,106,26,.4);display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:12px;}
.step-card h3{font-size:18px;font-weight:600;margin-bottom:12px;}
.step-card p{color:var(--text-2);font-size:14.5px;line-height:1.9;}
.step-line{height:2px;border-radius:2px;background:linear-gradient(90deg,rgba(28,124,255,.7),rgba(28,124,255,.05));margin-top:22px;}

/* ---------- 表单 ---------- */
.consult{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
@media (max-width:1023px){.consult{grid-template-columns:1fr;gap:32px;}}
.point-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  color:var(--text-2);font-size:15px;line-height:1.8;
}
.point-list li:last-child{border-bottom:none;}
.point-list .mark{
  flex-shrink:0;width:10px;height:10px;border-radius:50%;margin-top:9px;
  background:var(--primary);box-shadow:0 0 0 4px rgba(28,124,255,.14);
}
.point-list .mark.warm{background:var(--accent);box-shadow:0 0 0 4px rgba(255,106,26,.14);}
.contact-note{
  margin-top:26px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--panel);border:1px solid var(--line);
}
.contact-note h4{font-size:15px;font-weight:600;margin-bottom:8px;}
.contact-note p{font-size:13.5px;color:var(--text-3);line-height:1.9;}

.form-shell{
  background:linear-gradient(180deg,rgba(160,210,255,.06) 0%,rgba(13,22,38,.94) 100%);
  border:1px solid var(--line-2);border-radius:var(--r-float);
  padding:34px;box-shadow:var(--sh-card);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
@media (max-width:640px){.form-shell{padding:22px;border-radius:var(--r-card);}}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:640px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;color:var(--text-2);letter-spacing:.02em;}
.field label .req{color:var(--accent);margin-left:4px;}
.field input,.field select,.field textarea{
  height:46px;border-radius:var(--r-input);border:1px solid var(--line);
  background:rgba(7,12,20,.6);padding:0 15px;font-size:14.5px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:118px;padding:13px 15px;line-height:1.8;resize:vertical;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-2) 50%),linear-gradient(135deg,var(--text-2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:42px;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 4px rgba(28,124,255,.14);
}
.consent{display:flex;gap:12px;align-items:flex-start;margin-top:4px;font-size:13px;color:var(--text-3);line-height:1.8;}
.consent input{width:16px;height:16px;margin-top:5px;accent-color:var(--primary);flex-shrink:0;}
.form-foot{margin-top:22px;}
.form-msg{
  margin-top:16px;font-size:13.5px;color:var(--lime);display:none;
}
.form-msg.show{display:block;}

/* ---------- 相关分类 ---------- */
.related{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.related .label{font-size:13px;color:var(--text-3);margin-right:4px;}
.rel-link{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);font-size:14px;color:var(--text-2);background:var(--panel);
  transition:all .2s var(--ease);
}
.rel-link:hover{border-color:rgba(28,124,255,.5);color:var(--primary-light);transform:translateX(2px);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-float);
  border:1px solid var(--line-2);
  background-image:linear-gradient(90deg,rgba(7,12,20,.94) 0%,rgba(7,12,20,.62) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:52px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
@media (max-width:768px){.cta-band{padding:32px 24px;}}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;}
.cta-band p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:560px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:20px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(13,22,38,.6),rgba(7,12,20,1));}
.footer-cta{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.footer-cta h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;}
.footer-cta p{color:var(--text-2);font-size:14.5px;margin-top:10px;max-width:620px;}
.footer-cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px;}
@media (max-width:1023px){.footer-cols{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:640px){.footer-cols{grid-template-columns:1fr;}}
.footer-cols h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.02em;}
.footer-cols ul li{margin-bottom:12px;}
.footer-cols ul li a,.footer-cols ul li span{font-size:14px;color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block;}
.footer-cols ul li a:hover{color:var(--primary);transform:translateX(-2px);}
.footer-brand p{color:var(--text-3);font-size:13.5px;line-height:1.95;margin-top:18px;max-width:400px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 34px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}