/* roulang page: index */
:root{
  --ink-900:#050B14;
  --ink-800:#0A1524;
  --ink-700:#102236;
  --ink-600:#17324B;
  --brand:#2E8BFF;
  --signal:#17E0C4;
  --amber:#FFB443;
  --t1:#EAF2FB;
  --t2:#A9BDD3;
  --t3:#6E849C;
  --line:rgba(120,180,255,.14);
  --glass-line:rgba(160,215,255,.18);
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 24px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(23,224,196,.45), 0 10px 34px rgba(23,224,196,.26);
  --r-card:18px;
  --r-panel:22px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --r-img:14px;
  --font:-apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --bs-primary:#2E8BFF;
  --bs-body-bg:#050B14;
  --bs-body-color:#A9BDD3;
  --bs-border-color:rgba(120,180,255,.14);
  --bs-link-color:#2E8BFF;
  --bs-link-hover-color:#17E0C4;
  --bs-border-radius:18px;
  --bs-font-sans-serif:-apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --bs-emphasis-color:#EAF2FB;
  --bs-body-font-family:-apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --bs-heading-color:#EAF2FB;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--signal)}
h1,h2,h3,h4,h5{color:var(--t1);font-weight:700;letter-spacing:.015em;margin:0}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.25}
h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35}
h3{font-size:1.2rem;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
::selection{background:rgba(23,224,196,.28);color:#fff}
.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:96px 0;position:relative}
.section-head{margin-bottom:42px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--signal);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--signal);display:inline-block}
.lead{color:var(--t2);font-size:16px;max-width:720px}
.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* ---------- 按钮 ---------- */
.btn{border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:0 22px;height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s,filter .28s,background .28s,border-color .28s}
.btn:active{transform:translateY(0) scale(.99)}
.btn-sm{height:36px;font-size:14px;padding:0 16px}
.btn-lg{height:52px;font-size:16px;padding:0 28px}
.btn-primary,.btn-glow{
  background:linear-gradient(135deg,#2E8BFF,#17E0C4);
  color:#04121B;border:none;border-radius:var(--r-pill);font-weight:700;
}
.btn-primary:hover,.btn-primary:focus,.btn-glow:hover,.btn-glow:focus{
  filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--glow);color:#04121B;
}
.btn-primary:active,.btn-glow:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--t1);border:1px solid rgba(46,139,255,.4);border-radius:var(--r-btn)}
.btn-ghost:hover{color:var(--t1);border-color:var(--signal);background:rgba(23,224,196,.08);transform:translateY(-2px)}
.btn-link-arrow{background:none;border:none;padding:0;color:var(--brand);font-weight:600;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.btn-link-arrow i{transition:transform .25s cubic-bezier(.2,.7,.3,1)}
.btn-link-arrow:hover{color:var(--signal)}
.btn-link-arrow:hover i{transform:translateX(3px)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:1040;
  height:76px;display:flex;align-items:center;
  transition:height .3s ease,background .3s ease,box-shadow .3s ease,border-color .3s ease;
  background:transparent;border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(10,21,36,.82);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;width:100%;gap:18px}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:34px;height:34px;border-radius:12px;flex:0 0 34px;
  background:linear-gradient(140deg,rgba(46,139,255,.9),rgba(23,224,196,.9));
  display:grid;place-items:center;color:#04121B;font-size:15px;box-shadow:0 6px 18px rgba(23,224,196,.22);
}
.brand-text .dot{color:var(--signal);margin:0 2px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  color:var(--t2);font-size:15px;font-weight:500;padding:6px 0;position:relative;background:none;border:none;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--signal);
  transition:width .28s cubic-bezier(.2,.7,.3,1);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--t1)}
.nav-link.active::after{width:22px}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:rgba(16,34,54,.7);color:var(--t1);display:grid;place-items:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--signal);color:var(--signal)}
.offcanvas{background:rgba(10,21,36,.96);backdrop-filter:blur(16px);border-left:1px solid var(--line);color:var(--t2)}
.offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px}
.offcanvas-body{padding:20px 22px}
.oc-link{
  display:flex;align-items:center;height:48px;padding-left:14px;color:var(--t2);font-size:16px;
  border-left:3px solid transparent;transition:.25s;
}
.oc-link:hover,.oc-link.active{color:var(--t1);border-left-color:var(--signal);background:rgba(23,224,196,.05)}

/* ---------- Hero ---------- */
.hero{
  position:relative;padding:150px 0 96px;overflow:hidden;
  background:
    radial-gradient(60% 60% at 78% 18%, rgba(23,224,196,.16), transparent 70%),
    linear-gradient(180deg,#050B14 0%,#081422 62%,#050B14 100%);
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;background:var(--line);
}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero h1{margin-bottom:20px}
.hero h1 span{color:var(--signal)}
.hero-sub{font-size:17px;color:var(--t2);max-width:520px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:26px;border-top:1px solid var(--line);padding-top:22px}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--t3)}
.trust-item i{color:var(--signal);font-size:14px}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:420px;object-fit:cover;border-radius:var(--r-panel);box-shadow:var(--sh-2)}
.hero-visual::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-panel);
  background:linear-gradient(200deg,rgba(5,11,20,.05),rgba(5,11,20,.62));pointer-events:none;
}
.glass-panel{
  position:absolute;left:-26px;bottom:-34px;width:min(320px,86%);
  border-radius:var(--r-card);padding:22px;z-index:2;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-2);
}
.glass-panel h3{font-size:15px;margin-bottom:12px}
.glass-panel li{display:flex;gap:10px;font-size:14px;color:var(--t2);padding:7px 0;line-height:1.6}
.glass-panel li i{color:var(--signal);margin-top:5px;font-size:12px}

/* ---------- 通用卡片 ---------- */
.card-glass{
  border-radius:var(--r-card);padding:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s,box-shadow .28s;
}
.card-glass:hover{transform:translateY(-4px);border-color:rgba(23,224,196,.4);box-shadow:var(--sh-2)}

/* ---------- 痛点区 ---------- */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pain-card{display:flex;gap:18px}
.pain-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(46,139,255,.12);border:1px solid rgba(46,139,255,.28);color:var(--brand);font-size:16px;
}
.pain-card h3{font-size:16px;margin-bottom:8px}
.pain-card p{font-size:14px;color:var(--t3);margin:0}

/* ---------- 方案区 ---------- */
.solution-row{display:grid;grid-template-columns:7fr 5fr;gap:0;border-top:1px solid var(--line)}
.solution-row.alt{grid-template-columns:5fr 7fr}
.solution-item{padding:34px 30px;display:flex;gap:20px;align-items:flex-start}
.solution-item + .solution-item{border-left:1px solid var(--line)}
.sol-icon{
  flex:0 0 64px;width:64px;height:64px;border-radius:var(--r-card);display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(46,139,255,.18),rgba(23,224,196,.1));
  border:1px solid var(--glass-line);color:var(--signal);font-size:24px;
}
.solution-item h3{margin-bottom:8px;font-size:17px}
.solution-item p{font-size:14px;color:var(--t2);margin-bottom:12px}

/* ---------- 数据区 ---------- */
.data-band{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:70px 0}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;text-align:center}
.data-cell{padding:6px 18px;border-left:1px solid var(--line)}
.data-cell:first-child{border-left:none}
.data-num{font-size:48px;line-height:1.1;color:var(--amber);font-weight:700;font-variant-numeric:tabular-nums}
.data-cell p{margin:10px 0 0;font-size:13px;color:var(--t2)}

/* ---------- 表单 ---------- */
.form-shell{
  display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:start;
  border-radius:var(--r-panel);padding:40px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-2);
}
.form-intro li{display:flex;gap:10px;font-size:14px;color:var(--t2);padding:6px 0}
.form-intro li i{color:var(--signal);margin-top:5px;font-size:12px}
.form-label{font-size:13px;color:var(--t2);margin-bottom:8px;display:block}
.form-label .req{color:var(--amber)}
.form-control,.form-select{
  background:#0A1524;border:1px solid var(--line);color:var(--t1);height:46px;
  border-radius:var(--r-input);font-size:15px;padding:0 14px;box-shadow:none;
}
.form-select option{background:#0A1524;color:var(--t1)}
.form-control::placeholder{color:#5A6E85}
.form-control:focus,.form-select:focus{
  background:#0A1524;color:var(--t1);border-color:var(--signal);box-shadow:0 0 0 3px rgba(23,224,196,.12);
}
.form-control.is-invalid,.form-select.is-invalid{border-color:#FF6B6B;box-shadow:0 0 0 3px rgba(255,107,107,.12)}
.err-tip{font-size:13px;color:#FF6B6B;margin-top:6px;display:none}
.err-tip.show{display:block}
.privacy-note{font-size:13px;color:var(--t3);margin-top:16px}
.privacy-note a{color:var(--t2);border-bottom:1px dashed rgba(169,189,211,.5)}
.privacy-note a:hover{color:var(--signal);border-color:var(--signal)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.news-thumb{
  display:block;height:172px;background:var(--ink-700);position:relative;overflow:hidden;
  border-radius:var(--r-card) var(--r-card) 0 0;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .45s cubic-bezier(.2,.7,.3,1)}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,11,20,0),rgba(5,11,20,.55))}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-title{
  font-size:16px;line-height:1.55;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a{color:var(--t1)}
.news-card:hover .news-title a{color:var(--signal)}
.news-sum{
  font-size:14px;color:var(--t2);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;justify-content:space-between;align-items:center;margin-top:auto;gap:10px}
.badge-soft{
  font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(46,139,255,.12);color:#8CC4FF;border:1px solid rgba(46,139,255,.3);font-weight:500;
}
.badge-signal{background:rgba(23,224,196,.12);color:var(--signal);border:1px solid rgba(23,224,196,.32)}
.badge-amber{background:rgba(255,180,67,.12);color:var(--amber);border:1px solid rgba(255,180,67,.32)}
.news-time{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;white-space:nowrap}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);
}
.empty-state i{font-size:28px;color:var(--brand);display:block;margin-bottom:14px}
.empty-state p{color:var(--t3);font-size:14px;margin:0 0 10px}
.empty-state a{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.empty-state a:hover{color:var(--signal)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.accordion-item{background:transparent;border:none;border-bottom:1px solid var(--line);border-radius:0;transition:background .25s}
.accordion-item.is-open{background:rgba(23,224,196,.05);border-left:3px solid var(--signal);border-radius:0 var(--r-input) var(--r-input) 0}
.accordion-button{
  background:transparent;color:var(--t1);font-size:16px;font-weight:600;padding:20px 44px 20px 18px;
  box-shadow:none;border-radius:0;line-height:1.6;
}
.accordion-button:not(.collapsed){background:transparent;color:var(--signal);box-shadow:none}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-button::after{
  content:"+";position:absolute;right:14px;top:50%;transform:translateY(-50%);
  background-image:none;font-size:22px;font-weight:400;color:var(--signal);width:auto;height:auto;
  transition:transform .3s ease;line-height:1;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.accordion-body{padding:0 18px 22px;font-size:14px;color:var(--t2);line-height:1.85;background:transparent}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:var(--r-panel);padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  background:
    radial-gradient(70% 120% at 88% 10%, rgba(23,224,196,.16), transparent 70%),
    linear-gradient(140deg,#0A1524,#102236);
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-2);
}
.cta-band h2{font-size:clamp(1.3rem,2.1vw,1.7rem);margin-bottom:8px}
.cta-band p{margin:0;font-size:14px;color:var(--t2)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.footer-brand p{font-size:14px;color:var(--t3);margin-top:16px;max-width:300px}
.footer-col h4{font-size:14px;color:var(--t1);margin-bottom:18px;letter-spacing:.06em}
.footer-col li{margin-bottom:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--t3)}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--signal)}

/* ---------- Modal ---------- */
.modal-content{
  background:linear-gradient(160deg,rgba(16,34,54,.96),rgba(10,21,36,.98));
  border:1px solid var(--glass-line);border-radius:20px;color:var(--t2);
  backdrop-filter:blur(18px);box-shadow:var(--sh-2);
}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px}
.modal-title{font-size:17px;color:var(--t1)}
.modal-body{padding:26px}
.modal-footer{border-top:1px solid var(--line);padding:16px 26px}
.btn-close{
  width:32px;height:32px;border-radius:var(--r-pill);border:1px solid rgba(23,224,196,.5);
  opacity:1;filter:none;background-size:11px;box-shadow:0 0 14px rgba(23,224,196,.24);
}
.btn-close:hover{background-color:rgba(23,224,196,.12)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:82px 0}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .hero{padding:126px 0 76px}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual img{height:340px}
  .glass-panel{position:relative;left:0;bottom:0;width:100%;margin-top:22px}
  .solution-row,.solution-row.alt{grid-template-columns:1fr}
  .solution-item + .solution-item{border-left:none;border-top:1px solid var(--line)}
  .form-shell{grid-template-columns:1fr;padding:30px}
  .news-grid{grid-template-columns:1fr 1fr}
  .faq-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .section{padding:52px 0}
  .container{padding-left:18px;padding-right:18px}
  .pain-grid{grid-template-columns:1fr}
  .data-grid{grid-template-columns:1fr 1fr}
  .data-cell{padding:20px 10px;border-left:none}
  .data-cell:nth-child(odd){border-right:1px solid var(--line)}
  .data-cell:nth-child(n+3){border-top:1px solid var(--line)}
  .data-num{font-size:38px}
  .news-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px;text-align:left}
  .footer-grid{grid-template-columns:1fr}
  .hero-visual img{height:240px}
}
@media (max-width:575px){
  .hero{padding:112px 0 60px}
  .hero-actions .btn{width:100%}
  .trust-row{gap:16px;flex-direction:column}
  .form-shell{padding:22px 18px}
  .card-glass{padding:20px}
}

/* roulang page: article */
:root{
  --ink-900:#050B14;
  --ink-800:#0A1524;
  --ink-700:#102236;
  --ink-600:#17324B;
  --brand:#2E8BFF;
  --brand-soft:rgba(46,139,255,.12);
  --signal:#17E0C4;
  --signal-soft:rgba(23,224,196,.12);
  --amber:#FFB443;
  --amber-soft:rgba(255,180,67,.12);
  --t1:#EAF2FB;
  --t2:#A9BDD3;
  --t3:#6E849C;
  --line:rgba(120,180,255,.14);
  --glass-line:rgba(160,215,255,.18);
  --glass-bg:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 24px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(23,224,196,.45),0 10px 34px rgba(23,224,196,.26);
  --r-card:18px;
  --r-panel:22px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --r-img:14px;
  --bs-primary:#2E8BFF;
  --bs-body-bg:#050B14;
  --bs-body-color:#A9BDD3;
  --bs-border-color:rgba(120,180,255,.14);
  --bs-link-color:#2E8BFF;
  --bs-link-hover-color:#17E0C4;
  --bs-border-radius:12px;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-top:76px;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s ease;}
a:hover{color:var(--signal);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,h5{color:var(--t1);margin:0;letter-spacing:.015em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(23,224,196,.28);color:#fff;}
.container{max-width:1200px;padding-left:24px;padding-right:24px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--signal);
  letter-spacing:.08em;text-transform:none;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--signal-soft);border:1px solid rgba(23,224,196,.28);
}
.section-title{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35;font-weight:700;}
.section-sub{color:var(--t2);font-size:15px;margin-top:12px;max-width:640px;}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:76px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .28s cubic-bezier(.2,.7,.3,1),background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.scrolled{
  height:64px;
  background:rgba(10,21,36,.82);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.02em;}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(46,139,255,.28),rgba(23,224,196,.24));
  border:1px solid var(--glass-line);
  color:var(--signal);font-size:15px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.16);
}
.brand-text .dot{color:var(--signal);margin:0 2px;}
.nav-links{align-items:center;gap:6px;}
.nav-link{
  position:relative;
  color:var(--t2);font-size:15px;font-weight:500;
  padding:10px 14px;border-radius:var(--r-btn);
  transition:color .25s ease,background .25s ease;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.nav-link.active{color:var(--t1);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--signal);
  box-shadow:0 0 12px rgba(23,224,196,.7);
}
.header-actions{align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;line-height:1;
  padding:0 22px;height:44px;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),background .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
}
.btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px;box-shadow:none;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}
.btn-primary{
  background:linear-gradient(135deg,#2E8BFF,#17E0C4);
  color:#04121B;border-color:transparent;border-radius:var(--r-pill);
  box-shadow:0 8px 22px rgba(23,224,196,.22);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--glow);color:#04121B;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;color:var(--t1);
  border:1px solid rgba(46,139,255,.4);border-radius:var(--r-btn);
}
.btn-ghost:hover{background:rgba(46,139,255,.1);border-color:var(--brand);color:var(--t1);transform:translateY(-2px);}
.btn-soft{
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(46,139,255,.3);border-radius:var(--r-btn);
}
.btn-soft:hover{background:rgba(46,139,255,.2);color:var(--t1);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--signal);
}
.link-arrow i{transition:transform .25s cubic-bezier(.2,.7,.3,1);}
.link-arrow:hover{color:var(--signal);}
.link-arrow:hover i{transform:translateX(3px);}
.nav-toggle{
  width:42px;height:42px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--t1);display:grid;place-items:center;font-size:16px;
}
.nav-toggle:hover{background:rgba(255,255,255,.1);}

/* ===== offcanvas ===== */
.offcanvas.offcanvas-end{
  width:min(88vw,360px);
  background:var(--ink-800);
  border-left:1px solid var(--line);
  color:var(--t2);
}
.offcanvas-header{border-bottom:1px solid var(--line);padding:20px 22px;}
.offcanvas-body{padding:18px 0 28px;}
.mobile-cta{padding:0 22px 18px;}
.mobile-cta .btn{width:100%;}
.mobile-nav{display:flex;flex-direction:column;}
.mobile-nav a{
  position:relative;
  display:flex;align-items:center;
  height:48px;padding:0 22px;
  color:var(--t2);font-size:15px;font-weight:500;
  border-bottom:1px solid rgba(120,180,255,.07);
}
.mobile-nav a::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;
  background:var(--signal);transition:width .25s ease;
}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--t1);background:rgba(255,255,255,.03);}
.mobile-nav a:hover::before,.mobile-nav a.active::before{width:3px;}
.offcanvas .btn-close{filter:invert(1) grayscale(1) brightness(2);opacity:.7;}

/* ===== 文章页头 ===== */
.article-hero{
  position:relative;
  padding:56px 0 44px;
  background-image:linear-gradient(180deg,rgba(5,11,20,.78),rgba(5,11,20,.96)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 120% at 82% 8%,rgba(23,224,196,.16),transparent 70%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--t3);
  background:transparent;padding:0;margin:0 0 20px;
}
.breadcrumb a{color:var(--t2);}
.breadcrumb a:hover{color:var(--signal);}
.breadcrumb .sep{color:var(--t3);}
.breadcrumb .current{color:var(--t3);max-width:min(60vw,620px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(46,139,255,.3);
  padding:5px 12px;border-radius:var(--r-pill);
}
.article-title{
  font-size:clamp(1.9rem,4.4vw,3.1rem);
  line-height:1.25;font-weight:700;color:var(--t1);
  margin:18px 0 18px;max-width:960px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:20px;
  font-size:13px;color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.article-meta .meta-item i{color:var(--signal);font-size:12px;}

/* ===== 正文布局 ===== */
.article-main{padding:72px 0 88px;}
.article-body{
  max-width:820px;
  font-size:17px;line-height:1.9;color:var(--t2);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:clamp(1.3rem,2.2vw,1.7rem);
  line-height:1.4;font-weight:700;color:var(--t1);
  margin:40px 0 16px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:3px;background:var(--signal);
  box-shadow:0 0 12px rgba(23,224,196,.5);
}
.article-body h3{
  font-size:1.2rem;line-height:1.5;font-weight:600;color:var(--t1);
  margin:28px 0 12px;
}
.article-body h4{
  font-size:1.05rem;font-weight:600;color:var(--t1);margin:24px 0 10px;
}
.article-body a{
  color:var(--brand);
  border-bottom:1px dashed rgba(46,139,255,.45);
  padding-bottom:1px;
}
.article-body a:hover{color:var(--signal);border-bottom-color:var(--signal);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;}
.article-body ul li,.article-body ol li{
  position:relative;padding-left:24px;margin-bottom:9px;line-height:1.9;
}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.78em;
  width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.article-body ol{counter-reset:li;}
.article-body ol li{counter-increment:li;}
.article-body ol li::before{
  content:counter(li);
  position:absolute;left:0;top:.16em;
  width:18px;height:18px;border-radius:6px;
  display:grid;place-items:center;
  font-size:11px;font-weight:700;color:var(--brand);
  background:var(--brand-soft);font-variant-numeric:tabular-nums;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--glass-bg);
  border-left:3px solid var(--signal);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--t1);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-img);
  border:1px solid var(--line);
  margin:24px auto;
}
.article-body figure{margin:24px 0;}
.article-body figcaption,
.article-body .caption{
  font-size:13px;color:var(--t3);text-align:center;margin-top:10px;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.article-body table thead th{
  background:rgba(46,139,255,.1);color:var(--t1);
  font-weight:600;text-align:left;
}
.article-body table th,.article-body table td{
  padding:12px 16px;border-bottom:1px solid var(--line);
}
.article-body table tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.article-body table tbody tr:last-child td{border-bottom:none;}
.article-body table td:first-child{color:var(--t1);}
.article-body pre{
  background:#071019;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px 20px;margin:24px 0;overflow-x:auto;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;line-height:1.7;color:#B7D6F2;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;color:var(--signal);
  background:rgba(23,224,196,.1);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* 空态 */
.empty-state{
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  border-radius:var(--r-panel);
  padding:56px 28px;text-align:center;
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  display:grid;place-items:center;
  background:var(--ink-700);border:1px solid var(--line);
  color:var(--t3);font-size:20px;
}
.empty-state h3{font-size:1.15rem;margin-bottom:10px;color:var(--t1);}
.empty-state p{color:var(--t3);font-size:14px;margin-bottom:18px;}

/* ===== 侧栏 ===== */
.side-panel{
  position:sticky;top:100px;
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  border-radius:var(--r-panel);
  padding:24px;
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
  position:relative;
}
.side-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:rgba(255,255,255,.06);border-radius:var(--r-panel) var(--r-panel) 0 0;
}
.side-title{
  font-size:15px;font-weight:700;color:var(--t1);
  display:flex;align-items:center;gap:8px;margin-bottom:16px;
}
.side-title i{color:var(--signal);font-size:13px;}
.side-list{display:flex;flex-direction:column;}
.side-item{
  display:block;padding:13px 0;
  border-bottom:1px solid var(--line);
}
.side-item:last-child{border-bottom:none;padding-bottom:4px;}
.side-item .si-title{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;
  font-size:14px;font-weight:600;color:var(--t1);line-height:1.55;
  transition:color .25s ease;
}
.side-item:hover .si-title{color:var(--signal);}
.side-item .si-time{
  font-size:12px;color:var(--t3);margin-top:6px;
  font-variant-numeric:tabular-nums;display:block;
}
.side-panel .btn{width:100%;margin-top:20px;}
.side-divider{height:1px;background:var(--line);margin:20px 0;}

/* ===== 相关推荐 ===== */
.relate-card{
  display:block;height:100%;
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  padding:22px 24px;
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),border-color .28s ease,box-shadow .28s ease;
}
.relate-card:hover{transform:translateY(-4px);border-color:rgba(23,224,196,.4);box-shadow:var(--sh-2);}
.relate-card .rc-tag{
  display:inline-flex;align-items:center;font-size:12px;font-weight:600;
  color:var(--signal);background:var(--signal-soft);
  border:1px solid rgba(23,224,196,.28);
  padding:4px 10px;border-radius:var(--r-pill);margin-bottom:14px;
}
.relate-card h3{
  font-size:1.05rem;line-height:1.5;font-weight:600;color:var(--t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .25s ease;
}
.relate-card:hover h3{color:var(--signal);}
.relate-card p{
  font-size:14px;color:var(--t2);margin:10px 0 16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.relate-card .rc-foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--t3);font-variant-numeric:tabular-nums;
}

/* ===== CTA 条 ===== */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--glass-line);
  border-radius:var(--r-panel);
  padding:48px 44px;
  box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(60% 120% at 88% 20%,rgba(23,224,196,.16),transparent 70%);
}
.cta-band .inner{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35;font-weight:700;}
.cta-band p{color:var(--t2);margin:14px 0 0;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ===== 表单 ===== */
.form-label{font-size:13px;color:var(--t2);margin-bottom:8px;font-weight:500;display:block;}
.form-label .req{color:var(--amber);margin-left:3px;}
.form-control,.form-select{
  background:#0A1524;border:1px solid var(--line);
  border-radius:var(--r-input);
  color:var(--t1);font-size:15px;
  padding:12px 14px;height:auto;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.form-control::placeholder{color:var(--t3);}
.form-control:focus,.form-select:focus{
  background:#0A1524;color:var(--t1);
  border-color:var(--signal);
  box-shadow:0 0 0 3px rgba(23,224,196,.12);
  outline:none;
}
.form-select{background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236E849C'%3E%3Cpath d='M8 11 3 6h10z'/%3E%3C/svg%3E");}
.form-control.is-invalid,.form-select.is-invalid{
  border-color:#FF6B6B;box-shadow:0 0 0 3px rgba(255,107,107,.12);
}
.err-msg{display:none;font-size:13px;color:#FF6B6B;margin-top:6px;}
.err-msg.show{display:block;}
.form-note{font-size:13px;color:var(--t3);margin-top:14px;line-height:1.7;}
.form-note a{color:var(--t2);border-bottom:1px dashed var(--t3);}
.form-note a:hover{color:var(--signal);border-bottom-color:var(--signal);}

/* 内嵌表单区 */
.lead-panel{
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  border-radius:var(--r-panel);
  padding:36px;
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
}
.lead-panel h2{font-size:clamp(1.3rem,2.2vw,1.7rem);line-height:1.4;font-weight:700;}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--t2);}
.point-list li i{color:var(--signal);margin-top:5px;font-size:13px;}

/* ===== modal ===== */
.modal-content{
  background:linear-gradient(160deg,rgba(16,34,54,.96),rgba(10,21,36,.98));
  border:1px solid var(--glass-line);
  border-radius:20px;
  box-shadow:var(--sh-2);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  color:var(--t2);
}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px;}
.modal-title{font-size:1.1rem;font-weight:700;color:var(--t1);}
.modal-body{padding:24px 26px 30px;}
.modal-close{
  position:absolute;top:16px;right:16px;z-index:5;
  width:36px;height:36px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--glass-line);
  color:var(--t1);display:grid;place-items:center;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.modal-close:hover{border-color:var(--signal);box-shadow:0 0 0 1px rgba(23,224,196,.45),0 6px 18px rgba(23,224,196,.2);}
.modal-backdrop.show{opacity:.72;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand p{font-size:14px;color:var(--t3);margin-top:16px;line-height:1.8;max-width:320px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col ul li{font-size:14px;color:var(--t3);}
.footer-col ul li a{color:var(--t3);}
.footer-col ul li a:hover{color:var(--signal);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);}
.footer-bottom a:hover{color:var(--signal);}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .container{max-width:100%;}
}
@media (max-width:991.98px){
  .site-header{height:64px;background:rgba(10,21,36,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
  body{padding-top:64px;}
  .section{padding:72px 0;}
  .article-hero{padding:40px 0 34px;}
  .article-main{padding:52px 0 64px;}
  .article-body{max-width:100%;font-size:16px;}
  .side-panel{position:static;margin-top:36px;}
  .cta-band{padding:36px 26px;}
  .lead-panel{padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .section{padding:52px 0;}
  .article-title{margin:14px 0 14px;}
  .article-meta{gap:14px;}
  .breadcrumb .current{max-width:70vw;}
  .cta-band{padding:30px 20px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-brand p{max-width:100%;}
  .article-body h2{margin:32px 0 14px;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .brand-text{font-size:15px;}
  .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body table{font-size:14px;}
  .article-body table th,.article-body table td{padding:10px 12px;}
  .empty-state{padding:40px 20px;}
}

/* roulang page: category1 */
:root{
  --ink-900:#050B14;
  --ink-800:#0A1524;
  --ink-700:#102236;
  --ink-600:#17324B;
  --brand:#2E8BFF;
  --signal:#17E0C4;
  --amber:#FFB443;
  --t1:#EAF2FB;
  --t2:#A9BDD3;
  --t3:#6E849C;
  --line:rgba(120,180,255,.14);
  --glass-line:rgba(160,215,255,.18);
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 24px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(23,224,196,.45),0 10px 34px rgba(23,224,196,.26);
  --r-card:18px;
  --r-panel:22px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --r-img:14px;

  --bs-primary:#2E8BFF;
  --bs-primary-rgb:46,139,255;
  --bs-body-bg:#050B14;
  --bs-body-color:#A9BDD3;
  --bs-border-color:rgba(120,180,255,.14);
  --bs-link-color:#2E8BFF;
  --bs-link-hover-color:#17E0C4;
  --bs-border-radius:18px;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-emphasis-color:#EAF2FB;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--signal)}
h1,h2,h3,h4{color:var(--t1);margin:0;font-weight:700;letter-spacing:.015em}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.25}
h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35}
h3{font-size:1.2rem;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
ul{list-style:none;margin:0;padding:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

.container{max-width:1200px;padding-left:24px;padding-right:24px}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:76px;display:flex;align-items:center;
  background:transparent;
  transition:height .3s ease,background .3s ease,box-shadow .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  height:64px;
  background:rgba(10,21,36,.82);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.02em}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2E8BFF,#17E0C4);color:#04121A;font-size:15px;flex:0 0 auto;
  box-shadow:0 6px 18px rgba(23,224,196,.28);
}
.brand-text .dot{color:var(--signal);margin:0 1px}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-links .nav-link{
  position:relative;color:var(--t2);font-size:15px;font-weight:500;
  padding:8px 12px;border-radius:var(--r-btn);transition:color .25s ease,background .25s ease;
}
.nav-links .nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--signal);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.nav-links .nav-link:hover,.nav-links .nav-link.active{color:var(--t1)}
.nav-links .nav-link:hover::after,.nav-links .nav-link.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);color:var(--t1);font-size:17px;
  display:inline-flex;align-items:center;justify-content:center;transition:.25s;
}
.nav-toggle:hover{background:rgba(23,224,196,.12);border-color:rgba(23,224,196,.5)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15px;line-height:1;border-radius:var(--r-btn);
  padding:0 20px;height:44px;border:1px solid transparent;transition:.28s cubic-bezier(.2,.7,.3,1);
  text-align:center;white-space:nowrap;
}
.btn:focus,.btn:focus-visible{box-shadow:none;outline:2px solid var(--signal);outline-offset:2px}
.btn-sm{height:36px;font-size:14px;padding:0 16px}
.btn-lg{height:52px;font-size:16px;padding:0 28px}
.btn-pill{border-radius:var(--r-pill)}
.btn-primary{
  --bs-btn-bg:transparent;--bs-btn-border-color:transparent;
  --bs-btn-hover-bg:transparent;--bs-btn-hover-border-color:transparent;
  --bs-btn-active-bg:transparent;--bs-btn-active-border-color:transparent;
  background-image:linear-gradient(135deg,#2E8BFF,#17E0C4);
  color:#04121A;border:none;box-shadow:0 8px 24px rgba(23,224,196,.22);
}
.btn-primary:hover,.btn-primary:focus{
  color:#04121A;filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--glow);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{
  background:transparent;border:1px solid rgba(46,139,255,.4);color:var(--t1);
}
.btn-ghost:hover{background:rgba(46,139,255,.1);border-color:rgba(23,224,196,.6);color:var(--t1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--signal);font-weight:600;font-size:15px;
  background:none;border:none;padding:0;
}
.btn-link-arrow i{transition:transform .28s ease}
.btn-link-arrow:hover{color:var(--t1)}
.btn-link-arrow:hover i{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.tag-brand{color:var(--brand);background:rgba(46,139,255,.12);border:1px solid rgba(46,139,255,.3)}
.tag-signal{color:var(--signal);background:rgba(23,224,196,.12);border:1px solid rgba(23,224,196,.3)}
.tag-amber{color:var(--amber);background:rgba(255,180,67,.12);border:1px solid rgba(255,180,67,.3)}

/* ============ 页头 ============ */
.page-hero{
  position:relative;padding:158px 0 72px;overflow:hidden;
  background:var(--ink-900);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(5,11,20,.94) 0%,rgba(5,11,20,.78) 46%,rgba(5,11,20,.55) 100%),
                   radial-gradient(60% 60% at 78% 18%,rgba(23,224,196,.16),transparent 70%),
                   url(/assets/images/backpic/back-1.webp);
  background-size:cover,cover,cover;
  background-position:center,center,center;
  background-repeat:no-repeat;
}
.page-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,20,.5) 0%,rgba(5,11,20,.9) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--t3);margin-bottom:18px}
.breadcrumb-nav a{color:var(--t3)}
.breadcrumb-nav a:hover{color:var(--signal)}
.breadcrumb-nav .sep{color:var(--ink-600)}
.breadcrumb-nav .current{color:var(--t3)}
.page-hero h1{margin-bottom:18px}
.hero-lead{font-size:17px;line-height:1.9;color:var(--t2);max-width:760px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}

/* ============ 主体 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{margin-bottom:36px;max-width:760px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--t2);margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--signal);letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--signal);opacity:.7}

.glass-card{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease,border-color .28s ease;
}
.glass-card::before{
  content:"";position:absolute;top:0;left:12px;right:12px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(23,224,196,.4);box-shadow:var(--sh-2)}

/* 列表流卡片 */
.stream-list{display:flex;flex-direction:column;gap:22px}
.stream-card{display:flex;gap:0;overflow:hidden;padding:0}
.stream-thumb{
  flex:0 0 240px;width:240px;height:150px;align-self:stretch;overflow:hidden;
  background:var(--ink-700);border-radius:0;
}
.stream-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.stream-card:hover .stream-thumb img{transform:scale(1.05)}
.stream-body{padding:20px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.stream-body h3{font-size:1.12rem;line-height:1.5;transition:color .25s ease}
.stream-card:hover .stream-body h3{color:var(--signal)}
.stream-body .excerpt{
  color:var(--t2);font-size:14.5px;line-height:1.8;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.stream-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}
.stream-meta time{color:var(--t3);font-size:13px;font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

/* 侧栏 */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);border-radius:var(--r-panel);
  padding:24px;box-shadow:var(--sh-1);
}
.side-card h3{font-size:1.02rem;margin-bottom:16px}
.side-nav{display:flex;flex-direction:column;gap:2px}
.side-nav a{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;border-radius:var(--r-btn);
  color:var(--t2);font-size:14.5px;border-left:2px solid transparent;transition:.25s;
}
.side-nav a i{color:var(--brand);font-size:12px}
.side-nav a:hover{background:rgba(46,139,255,.1);color:var(--t1);border-left-color:var(--signal)}
.side-card p{font-size:14px;color:var(--t2);line-height:1.8}
.side-info li{
  display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:14px;
}
.side-info li:last-child{border-bottom:none}
.side-info span{color:var(--t3)}
.side-info strong{color:var(--t1);font-weight:600;font-variant-numeric:tabular-nums}
.side-card .btn{width:100%}

/* 检查清单 */
.check-panel{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:40px;box-shadow:var(--sh-1);
}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:32px}
.check-item{position:relative;padding-left:0}
.check-item .num{
  width:38px;height:38px;border-radius:var(--r-btn);display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(23,224,196,.5);color:var(--signal);font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;margin-bottom:14px;
}
.check-item h3{font-size:1rem;margin-bottom:8px}
.check-item p{font-size:14px;color:var(--t2);line-height:1.8;margin:0}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.accordion-button{
  position:relative;background:transparent;color:var(--t1);font-weight:600;font-size:16px;
  padding:22px 56px 22px 18px;box-shadow:none;transition:.28s;border-radius:0;
}
.accordion-button:not(.collapsed){background:rgba(23,224,196,.05);color:var(--t1);box-shadow:none}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--signal);border-radius:2px;
}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--signal);outline-offset:-2px}
.accordion-button::after{
  content:"+";background-image:none;width:26px;height:26px;border-radius:var(--r-pill);
  border:1px solid var(--glass-line);color:var(--signal);font-size:16px;font-weight:400;
  display:flex;align-items:center;justify-content:center;
  position:absolute;right:16px;top:50%;
  transform:translateY(-50%) !important;transition:.28s ease;
}
.accordion-button:not(.collapsed)::after{content:"−";border-color:rgba(23,224,196,.6);transform:translateY(-50%) rotate(180deg) !important}
.accordion-body{padding:0 56px 24px 18px;color:var(--t2);font-size:15px;line-height:1.9}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  background:linear-gradient(140deg,rgba(46,139,255,.16),rgba(23,224,196,.1)),var(--ink-800);
  border:1px solid var(--glass-line);padding:56px 48px;box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,196,.22),transparent 68%);pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;gap:40px;justify-content:space-between;flex-wrap:wrap}
.cta-inner h2{margin-bottom:10px}
.cta-inner p{margin:0;color:var(--t2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:40px}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;margin-top:18px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--t1)}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--t3)}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--signal)}

/* 移动导航 */
.offcanvas{background:rgba(10,21,36,.97);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-left:1px solid var(--line);color:var(--t1)}
.mobile-nav{width:min(88vw,360px)}
.offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line)}
.offcanvas-body{padding:22px}
.mobile-links{display:flex;flex-direction:column;margin-top:22px}
.mobile-links a{
  display:flex;align-items:center;height:48px;padding-left:14px;font-size:15px;color:var(--t2);
  border-left:3px solid transparent;transition:.25s;
}
.mobile-links a:hover,.mobile-links a.active{color:var(--t1);border-left-color:var(--signal);background:rgba(23,224,196,.07)}
.btn-close-custom{
  width:38px;height:38px;border-radius:var(--r-btn);background:transparent;border:1px solid var(--glass-line);
  color:var(--t1);display:inline-flex;align-items:center;justify-content:center;transition:.25s;
}
.btn-close-custom:hover{border-color:rgba(23,224,196,.6);color:var(--signal)}

/* 响应式 */
@media (max-width:1199.98px){
  .stream-thumb{flex:0 0 210px;width:210px;height:140px}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .page-hero{padding:126px 0 56px}
  .side-sticky{position:static;margin-top:32px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 32px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .section{padding:52px 0}
  .page-hero{padding:112px 0 48px}
  .container{padding-left:18px;padding-right:18px}
  .stream-card{flex-direction:column}
  .stream-thumb{flex:none;width:100%;height:186px}
  .stream-body{padding:18px}
  .check-grid{grid-template-columns:1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-band{padding:34px 22px}
  .accordion-button{padding:18px 52px 18px 14px;font-size:15px}
  .accordion-body{padding:0 20px 20px 14px}
}

/* roulang page: category2 */
:root{
  --ink-900:#050B14;
  --ink-800:#0A1524;
  --ink-700:#102236;
  --ink-600:#17324B;
  --brand:#2E8BFF;
  --signal:#17E0C4;
  --amber:#FFB443;
  --t1:#EAF2FB;
  --t2:#A9BDD3;
  --t3:#6E849C;
  --line:rgba(120,180,255,.14);
  --glass-line:rgba(160,215,255,.18);
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 24px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(23,224,196,.45),0 10px 34px rgba(23,224,196,.26);
  --r-card:18px; --r-panel:22px; --r-btn:12px; --r-pill:999px; --r-input:10px; --r-img:14px;
  --danger:#FF6B6B;

  --bs-primary:#2E8BFF;
  --bs-body-bg:#050B14;
  --bs-body-color:#A9BDD3;
  --bs-border-color:rgba(120,180,255,.14);
  --bs-link-color:#2E8BFF;
  --bs-link-hover-color:#17E0C4;
  --bs-border-radius:12px;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--signal)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--t1);margin:0;letter-spacing:.015em;font-weight:700}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.25}
h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35}
h3{font-size:1.2rem;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
::selection{background:rgba(23,224,196,.28);color:#fff}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--signal);letter-spacing:.08em;
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--signal);opacity:.7}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head p{margin:10px 0 0;color:var(--t2);max-width:640px}
.lead{font-size:17px;line-height:1.9;color:var(--t2)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:76px;display:flex;align-items:center;
  background:transparent;
  transition:height .3s ease,background .3s ease,box-shadow .3s ease,border-color .3s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  height:64px;
  background:rgba(10,21,36,.82);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.02em}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;display:grid;place-items:center;
  border-radius:12px;color:#04121F;font-size:15px;
  background:linear-gradient(135deg,#2E8BFF,#17E0C4);
  box-shadow:0 6px 18px rgba(23,224,196,.28);
}
.brand-text .dot{color:var(--signal);margin:0 2px}
.nav-links{display:flex;align-items:center;gap:6px;margin:0}
.nav-links .nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--t2);border-radius:10px;
  transition:color .25s ease,background .25s ease;
}
.nav-links .nav-link:hover{color:var(--t1);background:rgba(120,180,255,.07)}
.nav-links .nav-link.active{color:var(--t1)}
.nav-links .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--signal);border-radius:2px;box-shadow:0 0 12px rgba(23,224,196,.7);
}
.header-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);color:var(--t1);display:grid;place-items:center;
}
.nav-toggle:hover{border-color:rgba(23,224,196,.5)}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:all .28s cubic-bezier(.2,.7,.3,1);
}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-primary,.btn-cta{
  background:linear-gradient(135deg,#2E8BFF,#17E0C4)!important;
  color:#04121F!important;border-radius:var(--r-pill)!important;
  box-shadow:var(--glow);
}
.btn-primary:hover,.btn-cta:hover{
  filter:brightness(1.06);transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(23,224,196,.6),0 14px 40px rgba(23,224,196,.34);
}
.btn-primary:active,.btn-cta:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost,.btn-outline-light{
  background:transparent;border:1px solid rgba(46,139,255,.4);color:var(--t1);
}
.btn-ghost:hover,.btn-outline-light:hover{
  border-color:var(--signal);color:var(--signal);background:rgba(23,224,196,.06);transform:translateY(-2px);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand);
}
.link-arrow i{transition:transform .28s cubic-bezier(.2,.7,.3,1)}
.link-arrow:hover{color:var(--signal)}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;
  background:rgba(46,139,255,.12);border:1px solid rgba(46,139,255,.35);color:#8FC4FF;
}
.badge-signal{background:rgba(23,224,196,.12);border-color:rgba(23,224,196,.4);color:#7CF0DF}
.badge-amber{background:rgba(255,180,67,.12);border-color:rgba(255,180,67,.42);color:#FFD08F}

/* ---------- Hero（薄） ---------- */
.cat-hero{
  position:relative;min-height:300px;display:flex;align-items:flex-end;
  padding:150px 0 54px;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,20,.78) 0%,rgba(5,11,20,.65) 45%,rgba(5,11,20,.94) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(60% 60% at 78% 18%,rgba(23,224,196,.16),transparent 70%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero h1{margin:16px 0 18px;max-width:820px}
.cat-hero .lead{max-width:760px;margin:0;color:var(--t2)}
.crumb{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);
  list-style:none;padding:0;margin:0;
}
.crumb li{display:flex;align-items:center;gap:10px}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--signal)}
.crumb .sep{color:rgba(120,180,255,.35)}
.crumb .current{color:var(--t3)}

/* ---------- 横滚 tab ---------- */
.tabbar{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:rgba(10,21,36,.6);backdrop-filter:blur(10px);
  position:relative;z-index:3;
}
.tab-scroll{
  display:flex;gap:6px;overflow-x:auto;padding:0 24px;
  max-width:1200px;margin:0 auto;scrollbar-width:none;
}
.tab-scroll::-webkit-scrollbar{display:none}
.tab-scroll a{
  position:relative;flex:0 0 auto;padding:18px 18px 16px;font-size:15px;font-weight:600;
  color:var(--t2);white-space:nowrap;
}
.tab-scroll a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:-1px;height:2px;background:transparent;
  transition:background .25s ease;
}
.tab-scroll a:hover{color:var(--t1)}
.tab-scroll a.is-active{color:var(--signal)}
.tab-scroll a.is-active::after{background:var(--signal);box-shadow:0 0 12px rgba(23,224,196,.8)}

/* ---------- 玻璃卡片通用 ---------- */
.glass{
  position:relative;border-radius:var(--r-card);border:1px solid var(--glass-line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
  transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease,border-color .28s ease;
}
.glass::before{
  content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
  background:rgba(255,255,255,.06);border-radius:2px;
}
.glass:hover{transform:translateY(-4px);border-color:rgba(23,224,196,.4);box-shadow:var(--sh-2)}

/* ---------- 卡片网格 ---------- */
.grid-cards{margin-top:-6px}
.feat-card{overflow:hidden;height:100%;display:flex;flex-direction:column}
.feat-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-card) var(--r-card) 0 0}
.feat-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.feat-card:hover .feat-media img{transform:scale(1.05)}
.feat-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,20,.05) 40%,rgba(5,11,20,.72) 100%);
}
.feat-tag{position:absolute;left:14px;top:14px;z-index:2}
.feat-body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.feat-body h3{margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.check-list{margin:0 0 18px;display:grid;gap:9px}
.check-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--t2)}
.check-list li i{color:var(--signal);font-size:12px;margin-top:7px;flex:0 0 auto}
.feat-body .link-arrow{margin-top:auto}

/* ---------- 横向滑区 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 24px 22px;
  max-width:1200px;margin:0 auto;scroll-snap-type:x mandatory;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(120,180,255,.24);border-radius:999px}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;padding:0;overflow:hidden;display:flex;flex-direction:column;
}
.rail-card .rail-media{aspect-ratio:16/10;overflow:hidden;position:relative;border-radius:var(--r-card) var(--r-card) 0 0}
.rail-card .rail-media img{width:100%;height:100%;object-fit:cover}
.rail-card .rail-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,20,.1) 30%,rgba(5,11,20,.78) 100%);
}
.rail-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.rail-body h3{font-size:1.05rem;line-height:1.5}
.rail-body p{font-size:14px;margin:0;color:var(--t2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rail-meta{margin-top:auto;font-size:13px;color:var(--t3)}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;padding:22px 24px;border-radius:var(--r-panel);
  background:var(--ink-800);border:1px solid var(--line);
}
.notice i{color:var(--amber);font-size:20px;margin-top:4px}
.notice h3{font-size:1rem;margin-bottom:6px}
.notice p{margin:0;font-size:14px;color:var(--t2)}

/* ---------- FAQ ---------- */
.faq-item{
  border:0;border-bottom:1px solid var(--line);background:transparent;
  border-radius:0;position:relative;
}
.faq-item:first-child{border-top:1px solid var(--line)}
.accordion-button{
  background:transparent;color:var(--t1);font-size:16px;font-weight:600;
  padding:22px 52px 22px 18px;box-shadow:none!important;border-radius:0!important;
  transition:background .25s ease,color .25s ease;
}
.accordion-button::after{display:none}
.accordion-button:hover{color:var(--signal)}
.accordion-button:not(.collapsed){color:var(--signal);background:rgba(23,224,196,.05)}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  background:var(--signal);border-radius:3px;box-shadow:0 0 14px rgba(23,224,196,.6);
}
.faq-plus{
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;display:grid;place-items:center;color:var(--t3);
  font-size:13px;transition:transform .3s ease,color .3s ease;
}
.accordion-button:not(.collapsed) .faq-plus{color:var(--signal);transform:translateY(-50%) rotate(180deg)}
.accordion-body{
  padding:0 52px 24px 18px;font-size:15px;line-height:1.9;color:var(--t2);
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  border:1px solid var(--glass-line);padding:48px;
  background:
    radial-gradient(60% 90% at 88% 12%,rgba(23,224,196,.18),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02)),
    var(--ink-800);
}
.cta-band h2{margin-bottom:12px}
.cta-band p{margin:0 0 26px;max-width:620px;color:var(--t2)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding-top:64px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t3);max-width:340px;margin:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t1)}
.footer-col ul{display:grid;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--t3)}
.footer-col a:hover{color:var(--signal)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--signal)}

/* ---------- offcanvas 移动导航 ---------- */
.offcanvas.offcanvas-end{
  width:min(88vw,360px);background:var(--ink-800);border-left:1px solid var(--glass-line);color:var(--t2);
}
.offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.offcanvas-body{padding:20px}
.mnav-list{display:grid;gap:4px;margin:8px 0 22px}
.mnav-list a{
  position:relative;display:flex;align-items:center;height:48px;padding-left:16px;
  color:var(--t2);font-size:15px;font-weight:600;border-radius:10px;
  transition:color .25s ease,background .25s ease;
}
.mnav-list a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:transparent;transition:background .25s ease;
}
.mnav-list a:hover,.mnav-list a.active{color:var(--t1);background:rgba(120,180,255,.06)}
.mnav-list a:hover::before,.mnav-list a.active::before{background:var(--signal)}
.btn-close-white{filter:invert(1) grayscale(1) brightness(2)}

/* ---------- 表单 ---------- */
.form-label{font-size:13px;color:var(--t2);margin-bottom:8px}
.form-label .req{color:var(--amber)}
.form-control,.form-select{
  background:#0A1524;border:1px solid var(--line);color:var(--t1);
  border-radius:var(--r-input);height:46px;font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.form-control::placeholder{color:#5C7characteristic}
.form-control::placeholder{color:#5C718A}
.form-control:focus,.form-select:focus{
  background:#0A1524;color:var(--t1);
  border-color:var(--signal);box-shadow:0 0 0 3px rgba(23,224,196,.12);
}
.form-control.is-invalid,.form-select.is-invalid{border-color:var(--danger);box-shadow:none}
.err-tip{font-size:13px;color:var(--danger);margin-top:6px;display:none}
.err-tip.show{display:block}
.privacy-note{font-size:13px;color:var(--t3);margin:14px 0 0}
.privacy-note a{border-bottom:1px dashed rgba(169,189,211,.5)}
.modal-content{
  background:linear-gradient(160deg,rgba(16,34,54,.96),rgba(10,21,36,.98));
  border:1px solid var(--glass-line);border-radius:20px;box-shadow:var(--sh-2);
  backdrop-filter:blur(20px);
}
.modal-header,.modal-footer{border-color:var(--line)}
.modal-title{font-size:1.05rem}
.modal .btn-close{
  width:36px;height:36px;border-radius:var(--r-btn);border:1px solid rgba(23,224,196,.45);
  opacity:1;box-shadow:var(--glow);background-size:12px;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-links .nav-link{padding:10px 10px;font-size:14px}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .cat-hero{padding:132px 0 44px;min-height:280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px}
}
@media (max-width:767.98px){
  .section{padding:52px 0}
  .sec-head{margin-bottom:28px}
  .cat-hero{min-height:260px;padding:120px 0 38px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:28px 22px}
  .rail-card{flex:0 0 86%}
  .accordion-button{padding:18px 48px 18px 14px;font-size:15px}
  .accordion-body{padding:0 42px 20px 14px}
}
@media (max-width:575.98px){
  .container{padding:0 18px}
  .tab-scroll{padding:0 18px}
  .rail{padding:6px 18px 20px}
  .btn-lg{height:48px;padding:0 22px;font-size:15px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --ink-900:#050B14;
  --ink-800:#0A1524;
  --ink-700:#102236;
  --ink-600:#17324B;
  --brand:#2E8BFF;
  --signal:#17E0C4;
  --amber:#FFB443;
  --t1:#EAF2FB;
  --t2:#A9BDD3;
  --t3:#6E849C;
  --line:rgba(120,180,255,.14);
  --glass-line:rgba(160,215,255,.18);
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 24px 60px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(23,224,196,.45),0 10px 34px rgba(23,224,196,.26);
  --r-card:18px;
  --r-panel:22px;
  --r-btn:12px;

  --bs-primary:#2E8BFF;
  --bs-body-bg:#050B14;
  --bs-body-color:#A9BDD3;
  --bs-border-color:rgba(120,180,255,.14);
  --bs-link-color:#2E8BFF;
  --bs-link-hover-color:#17E0C4;
  --bs-border-radius:12px;
  --bs-body-font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-font-sans-serif:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --bs-emphasis-color:#EAF2FB;
  --bs-secondary-color:#6E849C;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--t2);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .24s ease;}
a:hover{color:var(--signal);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);font-weight:700;letter-spacing:.01em;}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.25;margin:0;}
h2{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.35;}
h3{font-size:1.15rem;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(23,224,196,.28);color:#fff;}

.container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.muted{color:var(--t3);font-size:13px;font-variant-numeric:tabular-nums;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  height:76px;display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:height .3s ease,background .3s ease,border-color .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  height:64px;
  background:rgba(10,21,36,.82);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:17px;letter-spacing:.01em;flex:none;}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(46,139,255,.24),rgba(23,224,196,.18));
  border:1px solid var(--glass-line);color:var(--signal);font-size:15px;flex:none;
}
.brand-text .dot{color:var(--signal);margin:0 2px;}
.nav-links{gap:4px;align-items:center;margin:0;}
.nav-link{
  position:relative;color:var(--t2);font-size:15px;font-weight:500;
  padding:8px 12px;border-radius:10px;transition:color .24s ease,background .24s ease;
}
.nav-link:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  background:var(--signal);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .28s cubic-bezier(.2,.7,.3,1);
}
.nav-link.active{color:var(--t1);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--t1);font-size:17px;
  display:grid;place-items:center;transition:all .24s ease;
}
.nav-toggle:hover{border-color:rgba(23,224,196,.5);color:var(--signal);}

/* ---------- buttons ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease,filter .28s ease,background .28s ease,border-color .28s ease,color .28s ease;
}
.btn:focus,.btn:active:focus{box-shadow:none;}
.btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-lg{height:52px;padding:0 26px;font-size:16px;}
.btn-primary{
  background:linear-gradient(135deg,#2E8BFF,#17E0C4);
  color:#04141B;border:none;border-radius:999px;
}
.btn-primary:hover{color:#04141B;filter:brightness(1.06);transform:translateY(-2px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(0);color:#04141B;}
.btn-ghost{
  background:transparent;border-color:rgba(46,139,255,.42);color:var(--t1);
}
.btn-ghost:hover{border-color:rgba(23,224,196,.75);color:var(--signal);background:rgba(23,224,196,.06);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14px;
}
.link-arrow i{transition:transform .28s cubic-bezier(.2,.7,.3,1);}
.link-arrow:hover{color:var(--signal);}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- badges ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(46,139,255,.45);background:rgba(46,139,255,.12);color:#9CC6FF;
}
.badge-signal{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(23,224,196,.4);background:rgba(23,224,196,.12);color:#7FF0DE;
}
.badge-amber{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(255,180,67,.45);background:rgba(255,180,67,.12);color:#FFD79B;
}

/* ---------- glass ---------- */
.glass{
  position:relative;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:rgba(255,255,255,.06);border-radius:inherit;pointer-events:none;
}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:168px 0 88px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 60% at 78% 18%,rgba(23,224,196,.16),transparent 70%),
    linear-gradient(180deg,rgba(5,11,20,.78) 0%,rgba(5,11,20,.9) 55%,rgba(5,11,20,.98) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:22px;}
.crumb a{color:var(--t2);}
.crumb a:hover{color:var(--signal);}
.crumb .sep{opacity:.55;}
.crumb .cur{color:var(--t3);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--signal);
  border:1px solid rgba(23,224,196,.35);background:rgba(23,224,196,.12);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-lead{max-width:760px;margin:20px 0 0;font-size:17px;line-height:1.9;color:var(--t2);}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ---------- service strip ---------- */
.service-strip{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.strip-inner{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.strip-item{
  display:flex;align-items:center;gap:12px;
  padding:22px 24px;font-size:15px;color:var(--t2);
  border-right:1px solid var(--line);
}
.strip-item:last-child{border-right:0;}
.strip-item i{color:var(--signal);font-size:16px;}

/* ---------- section head ---------- */
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-head h2{margin:0 0 12px;}
.sec-head p{margin:0;font-size:15px;color:var(--t2);}

/* ---------- timeline ---------- */
.timeline{margin:0;}
.tl-item{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:24px;
  padding-bottom:40px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:27px;top:60px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(23,224,196,.5),rgba(120,180,255,.14));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  width:56px;height:56px;border-radius:50%;flex:none;
  border:1px solid rgba(23,224,196,.6);
  background:rgba(10,21,36,.75);
  display:grid;place-items:center;
  color:var(--signal);font-size:15px;font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(23,224,196,.04);
}
.tl-body{padding-top:6px;}
.tl-body h3{margin:0 0 10px;color:var(--t1);font-size:1.16rem;}
.tl-body p{margin:0 0 12px;font-size:15px;color:var(--t2);}
.tl-list{display:flex;flex-wrap:wrap;gap:10px;}
.tl-list li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--t2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  padding:6px 12px;border-radius:999px;
}
.tl-list li i{color:var(--brand);font-size:12px;}

/* ---------- spec panel ---------- */
.tl-panel{
  grid-template-columns:1fr;
  padding:8px 0 40px;
}
.tl-panel::before{display:none;}
.spec-panel{
  border:1px solid var(--glass-line);border-radius:var(--r-panel);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  box-shadow:var(--sh-1);
}
.spec-head{
  display:flex;align-items:center;gap:10px;
  padding:16px 24px;font-size:14px;font-weight:600;color:var(--t1);
  border-bottom:1px solid var(--line);background:rgba(23,224,196,.06);
}
.spec-head i{color:var(--signal);}
.spec-row{
  display:grid;grid-template-columns:150px 1fr 150px 1fr;
  border-top:1px solid var(--line);
}
.spec-row:first-child{border-top:0;}
.spec-row > span{
  min-height:48px;display:flex;align-items:center;
  padding:8px 24px;font-size:14px;line-height:1.6;
}
.spec-k{color:var(--t2);background:rgba(255,255,255,.02);}
.spec-v{color:var(--t1);}
.spec-row:nth-child(even) .spec-k,
.spec-row:nth-child(even) .spec-v{background:rgba(255,255,255,.045);}

/* ---------- mini cards ---------- */
.mini-card{
  display:flex;flex-direction:column;overflow:hidden;height:100%;
  transition:transform .28s cubic-bezier(.2,.7,.3,1),box-shadow .28s ease,border-color .28s ease;
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(23,224,196,.4);box-shadow:var(--sh-2);}
.mini-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-700);}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.mini-card:hover .mini-thumb img{transform:scale(1.05);}
.mini-thumb .tag{position:absolute;left:14px;top:14px;}
.mini-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1;}
.mini-body h3{
  margin:0 0 10px;font-size:1.06rem;color:var(--t1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-body p{
  margin:0 0 18px;font-size:14px;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}

/* ---------- faq ---------- */
.faq{border:0;background:transparent;}
.faq .accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.faq .accordion-button{
  position:relative;
  background:transparent;color:var(--t1);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:22px 56px 22px 20px;border-radius:0;box-shadow:none;
  transition:background .28s ease,color .28s ease,box-shadow .28s ease;
}
.faq .accordion-button:not(.collapsed){
  color:var(--signal);background:rgba(23,224,196,.05);
  box-shadow:inset 3px 0 0 var(--signal);
}
.faq .accordion-button:focus{box-shadow:inset 3px 0 0 var(--signal);outline:none;}
.faq .accordion-button:focus-visible{outline:2px solid var(--signal);outline-offset:-2px;}
.faq .accordion-button::after{
  content:"+";display:flex;align-items:center;justify-content:center;
  width:26px;height:26px;right:20px;position:absolute;
  background-image:none;font-size:19px;font-weight:400;color:var(--signal);
  transform:none;transition:transform .28s ease;
}
.faq .accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.faq .accordion-body{
  padding:0 56px 24px 20px;font-size:15px;color:var(--t2);line-height:1.9;
}

/* ---------- cta band ---------- */
.cta-band{padding:0 0 96px;}
.cta-inner{
  border-radius:var(--r-panel);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  background:linear-gradient(160deg,rgba(46,139,255,.14),rgba(23,224,196,.07));
}
.cta-inner h2{margin:0 0 10px;font-size:clamp(1.3rem,2.2vw,1.75rem);}
.cta-inner p{margin:0;font-size:15px;color:var(--t2);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- modal ---------- */
.modal-content{
  background:linear-gradient(160deg,rgba(16,34,54,.96),rgba(10,21,36,.98));
  border:1px solid var(--glass-line);border-radius:20px;color:var(--t2);
  box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px;}
.modal-title{color:var(--t1);font-size:1.1rem;font-weight:700;}
.modal-body{padding:24px 26px 8px;}
.modal-footer{border-top:1px solid var(--line);padding:18px 26px 22px;}
.btn-close{
  filter:invert(1) grayscale(1) brightness(1.6);
  opacity:.8;border-radius:8px;
}
.btn-close:focus{box-shadow:0 0 0 3px rgba(23,224,196,.25);}

/* ---------- form ---------- */
.form-label{font-size:13px;color:var(--t2);margin-bottom:6px;font-weight:500;}
.form-label .req{color:var(--amber);margin-left:2px;}
.form-control,.form-select{
  background:#0A1524;border:1px solid var(--line);color:var(--t1);
  border-radius:10px;min-height:44px;font-size:15px;
  padding:10px 14px;transition:border-color .24s ease,box-shadow .24s ease;
}
.form-control::placeholder{color:var(--t3);}
.form-control:focus,.form-select:focus{
  background:#0A1524;color:var(--t1);
  border-color:var(--signal);box-shadow:0 0 0 3px rgba(23,224,196,.12);
}
.form-select option{background:#0A1524;color:var(--t1);}
textarea.form-control{min-height:96px;resize:vertical;}
.form-hint{font-size:13px;color:var(--t3);margin-top:6px;}
.form-text-error{font-size:13px;color:#FF6B6B;margin-top:6px;display:none;}
.field-invalid .form-control,.field-invalid .form-select{border-color:#FF6B6B;}
.field-invalid .form-text-error{display:block;}
.privacy-note{font-size:13px;color:var(--t3);margin-top:14px;}
.privacy-note a{color:var(--t2);border-bottom:1px dashed rgba(169,189,211,.5);}
.privacy-note a:hover{color:var(--signal);border-bottom-color:var(--signal);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-900);border-top:1px solid var(--line);
  padding:68px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t3);line-height:1.85;max-width:340px;margin:0;}
.footer-col h4{
  font-size:14px;color:var(--t1);margin:0 0 16px;font-weight:600;letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a,.footer-col ul li span{font-size:14px;color:var(--t3);}
.footer-col ul li a:hover{color:var(--signal);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.footer-bottom a{color:var(--t3);}
.footer-bottom a:hover{color:var(--signal);}

/* ---------- offcanvas ---------- */
.offcanvas.offcanvas-end{
  width:min(88vw,360px);
  background:linear-gradient(180deg,rgba(10,21,36,.99),rgba(5,11,20,.99));
  border-left:1px solid var(--line);color:var(--t2);
}
.offcanvas-header{padding:20px 22px;border-bottom:1px solid var(--line);}
.offcanvas-body{padding:18px 0 26px;display:flex;flex-direction:column;}
.mobile-cta{padding:0 22px 18px;}
.mobile-cta .btn{width:100%;}
.mobile-nav{display:flex;flex-direction:column;}
.mobile-nav a{
  display:flex;align-items:center;min-height:48px;
  padding:0 22px;font-size:15px;color:var(--t2);
  border-left:3px solid transparent;
  transition:all .24s ease;
}
.mobile-nav a:hover,.mobile-nav a.active{
  color:var(--t1);background:rgba(23,224,196,.07);border-left-color:var(--signal);
}
.mobile-foot{margin-top:auto;padding:20px 22px 0;border-top:1px solid var(--line);font-size:13px;color:var(--t3);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .footer-grid{gap:32px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .page-hero{padding:140px 0 68px;}
  .strip-inner{grid-template-columns:1fr;}
  .strip-item{border-right:0;border-bottom:1px solid var(--line);}
  .strip-item:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:0 0 72px;}
  .cta-inner{padding:34px 30px;}
}
@media (max-width:767.98px){
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  .sec-head{margin-bottom:32px;}
  .page-hero{padding:124px 0 56px;}
  .hero-lead{font-size:16px;}
  .tl-item{grid-template-columns:48px 1fr;gap:16px;padding-bottom:32px;}
  .tl-num{width:48px;height:48px;font-size:14px;}
  .tl-item::before{left:23.5px;top:52px;}
  .spec-row{grid-template-columns:118px 1fr;}
  .spec-row > span{padding:10px 18px;min-height:44px;}
  .spec-k{background:rgba(255,255,255,.04);}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .faq .accordion-button{padding:18px 48px 18px 14px;font-size:15px;}
  .faq .accordion-body{padding:0 40px 20px 14px;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .brand{font-size:15px;}
  .brand-mark{width:30px;height:30px;font-size:13px;}
  .modal-body{padding:20px 18px 4px;}
  .modal-header,.modal-footer{padding-left:18px;padding-right:18px;}
  .cta-inner{padding:26px 20px;}
}