/* roulang page: index */
:root{
  --bg-0:#070F16;
  --bg-1:#0B1822;
  --bg-2:#102230;
  --brand:#2BE3C4;
  --brand-deep:#14A98F;
  --accent:#FF7A2F;
  --text:#E8F1F5;
  --text-2:#9FB3BF;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --shadow:0 1px 0 rgba(255,255,255,.06) inset, 0 18px 40px rgba(0,0,0,.45);
  --glow-cyan:0 0 22px rgba(43,227,196,.35);
  --glow-orange:0 0 22px rgba(255,122,47,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text);text-decoration:none;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0 0 14px;font-weight:700;line-height:1.3;letter-spacing:-.3px}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.22;letter-spacing:-.5px}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:21px}
h4{font-size:17px}
p{margin:0 0 18px;color:var(--text-2)}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:1400px){.wrap{max-width:1320px}}
.section{padding:96px 0;position:relative}
@media(max-width:991px){.section{padding:72px 0}}
@media(max-width:575px){.section{padding:56px 0}}
.section-head{max-width:820px;margin-bottom:44px}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.5px;color:var(--brand);text-transform:uppercase;margin-bottom:14px}
.section-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.section-head p{font-size:16px;color:var(--text-2);margin-bottom:0}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.link-arrow{color:var(--brand);font-size:14.5px;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}
.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
}
.solid-card{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow)}
.badge-soft{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--brand);font-size:12px;letter-spacing:.5px;line-height:1.7;
}
.btn-brand,.btn-ghost,.btn-cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all .22s var(--ease)}
.btn-brand{background:var(--accent);color:#131313}
.btn-brand:hover{background:#ff8b47;color:#131313;transform:translateY(-2px);box-shadow:var(--glow-orange)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-cta{background:linear-gradient(120deg,var(--brand),var(--brand-deep));color:#052018;height:42px;padding:0 20px;border-radius:999px;font-size:14.5px}
.btn-cta:hover{color:#052018;transform:translateY(-2px);box-shadow:var(--glow-cyan)}

/* ===== 导航 ===== */
.site-header{position:fixed;top:14px;left:0;right:0;z-index:1050;transition:top .25s var(--ease)}
.nav-shell{
  max-width:1160px;margin:0 auto;padding:12px 18px;
  display:flex;align-items:center;gap:20px;
  background:rgba(11,24,34,.55);
  border:1px solid var(--line);
  border-radius:999px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:padding .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled .nav-shell{padding:8px 18px;background:rgba(11,24,34,.88);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(140deg,var(--brand),var(--brand-deep));color:#04201A;font-size:15px}
.brand-text{display:flex;align-items:baseline;gap:2px;line-height:1.1}
.brand-text strong{font-size:17px;letter-spacing:.5px;color:var(--text)}
.brand-text em{font-style:normal;font-size:13px;color:var(--brand);letter-spacing:.3px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{position:relative;padding:8px 14px;font-size:14.5px;color:var(--text-2);border-radius:999px}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-links a.is-active{color:var(--brand)}
.nav-links a.is-active::after{content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);width:18px;height:2px;background:var(--brand);border-radius:2px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:999px;background:transparent;border:1px solid var(--line);color:var(--text);margin-left:auto}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.drawer{position:fixed;inset:0;z-index:1060;visibility:hidden;opacity:0;transition:opacity .25s var(--ease),visibility .25s}
.drawer.open{visibility:visible;opacity:1}
.drawer-mask{position:absolute;inset:0;background:rgba(4,9,13,.7);backdrop-filter:blur(6px)}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:min(340px,86vw);background:var(--bg-1);border-left:1px solid var(--line);padding:22px;display:flex;flex-direction:column;gap:22px;transform:translateX(100%);transition:transform .3s var(--ease);overflow-y:auto}
.drawer.open .drawer-panel{transform:translateX(0)}
.drawer-close{align-self:flex-end;width:38px;height:38px;border-radius:50%;background:transparent;border:1px solid var(--line);color:var(--text-2)}
.drawer-close:hover{color:var(--brand);border-color:var(--brand)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.03);border:1px solid transparent;font-size:15px;color:var(--text-2)}
.drawer-nav a.is-active,.drawer-nav a:hover{color:var(--brand);border-color:rgba(43,227,196,.35)}
.drawer-info{font-size:13.5px;color:var(--text-2);border-top:1px solid var(--line);padding-top:18px}
.drawer-info span{display:block;margin-bottom:6px}
@media(max-width:991px){
  .nav-links,.nav-shell>.btn-cta{display:none}
  .nav-toggle{display:grid;place-items:center}
}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:170px 0 96px;
  background:
    linear-gradient(180deg,rgba(7,15,22,.86),rgba(7,15,22,.92)),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 380px at 82% 18%,rgba(43,227,196,.12),transparent 70%);
}
.hero .wrap{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--line);color:var(--brand);font-size:12.5px;letter-spacing:.4px;margin-bottom:20px}
.hero h1{margin-bottom:18px}
.hero h1 .hl{color:var(--brand)}
.hero-sub{font-size:17px;color:var(--text);opacity:.82;max-width:34ch;margin-bottom:26px}
.hero-metrics{display:flex;gap:34px;flex-wrap:wrap;margin-bottom:30px}
.hero-metrics .m-num{font-size:26px;font-weight:700;color:var(--brand);line-height:1.2}
.hero-metrics .m-txt{font-size:13px;color:var(--text-2)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-scroll{margin-top:44px;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-2)}
.hero-scroll .line{width:52px;height:1px;background:linear-gradient(90deg,var(--brand),transparent)}
.hero-card{padding:16px;border-radius:var(--r-card)}
.hero-card .media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--bg-2)}
.hero-card .media img{width:100%;height:100%;object-fit:cover}
.hero-card .body{padding:18px 6px 6px}
.hero-card .body h4{margin-bottom:8px}
.hero-card .body p{font-size:14px;margin-bottom:0}
.hero-strip{display:flex;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-2)}
@media(max-width:991px){
  .hero{padding:140px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-sub{max-width:none}
}

/* ===== 服务轨道 ===== */
.track{border-top:1px solid var(--line)}
.track-item{display:grid;grid-template-columns:150px 1fr;gap:32px;padding:34px 0;border-bottom:1px solid var(--line);transition:background .25s var(--ease)}
.track-item:hover{background:rgba(255,255,255,.02)}
.track-num{font-size:clamp(38px,5vw,60px);font-weight:700;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(43,227,196,.55);letter-spacing:-1px}
.track-item h3{margin-bottom:10px}
.track-item p{margin-bottom:0;max-width:640px}
.track-item .icon-line{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);margin-bottom:14px;background:rgba(43,227,196,.06)}
@media(max-width:767px){
  .track-item{grid-template-columns:1fr;gap:14px;padding:26px 0}
  .track-num{font-size:36px}
}

/* ===== 数据 ===== */
.stat-band{
  position:relative;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    repeating-linear-gradient(115deg,rgba(43,227,196,.05) 0 1px,transparent 1px 26px),
    var(--bg-1);
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:64px 0}
.stat-item .n{font-size:clamp(36px,5vw,64px);font-weight:700;line-height:1.05;color:var(--brand);letter-spacing:-1px}
.stat-item .n small{font-size:18px;color:var(--text-2);margin-left:6px;font-weight:400}
.stat-item .d{font-size:14px;color:var(--text-2);margin-top:8px}
@media(max-width:767px){.stat-grid{grid-template-columns:repeat(2,1fr);gap:22px;padding:48px 0}}

/* ===== 内容动态 ===== */
.cms-lead{display:block;overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease)}
.cms-lead:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);box-shadow:var(--shadow),var(--glow-cyan)}
.cms-lead .media{aspect-ratio:16/9;background:var(--bg-2);border-bottom:1px solid var(--line);overflow:hidden}
.cms-lead .media img{width:100%;height:100%;object-fit:cover}
.cms-lead .body{padding:24px}
.cms-lead h3{font-size:22px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-lead p{margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-time{font-size:13px;color:var(--text-2)}
.cms-list{padding:8px 4px}
.cms-list li{border-bottom:1px solid var(--line);position:relative}
.cms-list li:last-child{border-bottom:0}
.cms-list a{display:block;padding:16px 12px 16px 16px;position:relative}
.cms-list a::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:0;background:var(--brand);transition:height .22s var(--ease)}
.cms-list a:hover{background:rgba(255,255,255,.035)}
.cms-list a:hover::before{height:56%}
.cms-list a:hover .cms-list-title{color:#fff}
.cms-list-title{display:block;font-size:15.5px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:6px}
.cms-list-meta{font-size:12.5px;color:var(--text-2)}
.empty-state{min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:32px;border-radius:var(--r-card)}
.empty-state i{width:52px;height:52px;border-radius:14px;border:1px solid var(--line);display:grid;place-items:center;color:var(--brand);font-size:20px}
.empty-state span{color:var(--text-2);font-size:15px}

/* ===== 场景案例 ===== */
.case-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:22px}
.case-col{display:flex;flex-direction:column;gap:22px}
.case-col.offset{margin-top:44px}
.case-card{overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease)}
.case-card:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35)}
.case-card .media{aspect-ratio:16/9;background:var(--bg-2);border-bottom:1px solid var(--line);overflow:hidden}
.case-card.tall .media{aspect-ratio:16/7}
.case-card .media img{width:100%;height:100%;object-fit:cover}
.case-card .body{padding:20px 22px 22px}
.case-card h3{font-size:18px;margin-bottom:8px}
.case-card p{font-size:14px;margin-bottom:0}
@media(max-width:991px){
  .case-grid{grid-template-columns:1fr}
  .case-col.offset{margin-top:0}
}

/* ===== 方案 ===== */
.plan-grid{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:start}
.plan-side{position:sticky;top:120px}
.plan-side p{max-width:36ch}
.plan-card{padding:26px;margin-bottom:20px;transition:border-color .22s var(--ease)}
.plan-card:hover{border-color:rgba(43,227,196,.35)}
.plan-card h3{font-size:19px;display:flex;align-items:center;gap:12px}
.plan-card h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex-shrink:0}
.plan-card summary{cursor:pointer;font-size:14px;color:var(--brand);list-style:none;display:inline-flex;align-items:center;gap:8px;margin-top:4px}
.plan-card summary::-webkit-details-marker{display:none}
.plan-card summary i{transition:transform .22s var(--ease)}
.plan-card[open] summary i{transform:rotate(180deg)}
.plan-card ul{margin-top:16px;display:grid;gap:10px}
.plan-card ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.plan-card ul li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--brand);border-radius:1px}
@media(max-width:991px){
  .plan-grid{grid-template-columns:1fr;gap:32px}
  .plan-side{position:static}
}

/* ===== FAQ ===== */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{background:var(--glass)!important;border:1px solid var(--line)!important;border-radius:var(--r-card)!important;margin-bottom:14px;overflow:hidden}
.accordion-button{
  background:transparent!important;color:var(--text)!important;font-size:16.5px;font-weight:600;
  padding:20px 60px 20px 24px;box-shadow:none!important;position:relative;
}
.accordion-button:not(.collapsed){color:var(--brand)!important}
.accordion-button::after{display:none}
.accordion-button .faq-icon{position:absolute;right:22px;top:50%;transform:translateY(-50%);color:var(--brand);transition:transform .25s var(--ease);font-size:14px}
.accordion-button[aria-expanded="true"] .faq-icon{transform:translateY(-50%) rotate(45deg)}
.accordion-button:focus{border-color:rgba(43,227,196,.35)}
.accordion-body{padding:0 24px 22px 24px;color:var(--text-2);font-size:15px;position:relative}
.accordion-body::before{content:"";position:absolute;left:24px;top:4px;bottom:22px;width:3px;background:var(--brand);border-radius:3px;opacity:0}
.accordion-collapse.show .accordion-body::before{opacity:1}
.accordion-body p:last-child{margin-bottom:0}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px}
.contact-info li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-info i{color:var(--brand);margin-top:6px}
.contact-info strong{display:block;font-size:15px;color:var(--text)}
.contact-info span{font-size:14px;color:var(--text-2)}
.form-card{padding:30px}
.form-card label{font-size:14px;color:var(--text-2);margin-bottom:8px;display:block}
.form-control,.form-select{
  background:rgba(255,255,255,.04)!important;border:1px solid var(--line)!important;
  border-radius:var(--r-input)!important;color:var(--text)!important;padding:12px 14px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-control::placeholder{color:rgba(159,179,191,.6)}
.form-control:focus,.form-select:focus{border-color:var(--brand)!important;box-shadow:0 0 0 3px rgba(43,227,196,.14)!important;background:rgba(255,255,255,.06)!important}
.form-select option{background:var(--bg-2);color:var(--text)}
.form-hint{display:block;font-size:13px;color:var(--text-2);margin-top:6px}
.form-note{font-size:13px;color:var(--text-2);margin-top:14px;margin-bottom:0}
.form-ok{display:none;margin-top:16px;font-size:14px;color:var(--brand)}
.form-ok.show{display:block}
@media(max-width:991px){.contact-grid{grid-template-columns:1fr;gap:30px}}

/* ===== 页脚 ===== */
.site-footer{background:#04090E;border-top:1px solid var(--line);padding:64px 0 0;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;max-width:34ch;margin-bottom:0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}
.to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2)}
.to-top:hover{color:var(--brand)}
@media(max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:575px){.footer-grid{grid-template-columns:1fr}}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#070F16;
  --bg-1:#0B1822;
  --bg-2:#102230;
  --brand:#2BE3C4;
  --brand-deep:#14A98F;
  --accent:#FF7A2F;
  --text:#E8F1F5;
  --text-2:#9FB3BF;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.06),0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 22px rgba(43,227,196,.35);
  --glow-accent:0 0 22px rgba(255,122,47,.40);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Barlow","DIN Alternate","HarmonyOS Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:112px}
body{
  margin:0;background:var(--bg-0);color:var(--text);
  font-family:var(--font-cn);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(--text-2);text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out}
a:hover{color:var(--brand)}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.3px}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:1030;transition:top .24s ease-out}
.nav-shell{
  position:relative;width:min(1160px,calc(100% - 32px));margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:12px 16px 12px 18px;border-radius:999px;
  background:rgba(11,24,34,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.10);
  transition:padding .24s ease-out,background .24s ease-out,box-shadow .24s ease-out;
}
.site-header.is-scrolled{top:10px}
.site-header.is-scrolled .nav-shell{padding:8px 16px 8px 18px;background:rgba(11,24,34,.88);box-shadow:0 18px 40px rgba(0,0,0,.45)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#04140F;font-size:15px;transition:box-shadow .22s ease-out;
}
.brand:hover .brand-mark{box-shadow:var(--glow)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:1.2px;color:var(--text-2)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 13px;border-radius:999px;font-size:14px;color:var(--text-2);
  transition:color .2s ease-out,background-color .2s ease-out,text-shadow .2s ease-out;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.05);text-shadow:0 0 12px rgba(43,227,196,.45)}
.nav-links a.is-active{color:var(--brand)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;flex:0 0 auto;
  border-radius:999px;font-size:14px;font-weight:700;color:#1A0A02;
  background:linear-gradient(135deg,var(--accent),#E8621D);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-cta:hover{color:#1A0A02;transform:translateY(-2px);box-shadow:var(--glow-accent)}
.nav-toggle{
  display:none;width:42px;height:42px;flex:0 0 auto;margin-left:auto;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text);font-size:16px;cursor:pointer;transition:.2s ease-out;
}
.nav-toggle:hover{border-color:rgba(43,227,196,.45);color:var(--brand)}

/* ---------- banner ---------- */
.page-banner{position:relative;overflow:hidden;padding:152px 0 62px;border-bottom:1px solid var(--line)}
.banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.42}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,15,22,.86) 0%,rgba(7,15,22,.91) 52%,var(--bg-0) 100%);
}
.banner-inner{position:relative;z-index:2}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;
  font-size:12px;letter-spacing:.8px;color:var(--brand);
  background:var(--glass);border:1px solid rgba(43,227,196,.28);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.page-banner h1{
  margin:18px 0 14px;font-size:clamp(28px,4.4vw,50px);line-height:1.22;letter-spacing:-.5px;max-width:900px;
}
.banner-sub{margin:0;font-size:16px;color:var(--text-2);max-width:640px}

/* ---------- doc layout ---------- */
.doc-layout{display:grid;grid-template-columns:236px minmax(0,1fr);gap:56px;align-items:start;padding:72px 0 24px}
.toc{
  position:sticky;top:104px;padding:22px 18px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
}
.toc h4{margin:0 0 14px;padding-left:10px;font-size:12px;letter-spacing:1.6px;color:var(--text-2)}
.toc a{
  display:block;padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:.2s ease-out;
}
.toc a:hover{color:#fff;background:rgba(255,255,255,.05)}
.toc a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(43,227,196,.08)}

.doc-main{min-width:0}
.doc-section{padding-bottom:48px;margin-bottom:48px;border-bottom:1px solid var(--line);scroll-margin-top:112px}
.doc-section:last-of-type{border-bottom:none;margin-bottom:24px}
.sec-head{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.sec-num{
  font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(43,227,196,.6);
}
.doc-section h2{font-size:clamp(21px,2.5vw,28px);line-height:1.35}
.doc-section>p{max-width:800px;color:var(--text-2)}

.step-list{list-style:none;display:grid;gap:14px;margin:26px 0 0}
.step-list li{
  position:relative;padding:18px 22px 18px 66px;border-radius:14px;
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.step-list li:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);box-shadow:var(--glow)}
.step-list li::before{
  content:attr(data-step);position:absolute;left:20px;top:19px;
  width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  background:rgba(43,227,196,.12);color:var(--brand);
  font-family:var(--font-num);font-size:13px;font-weight:700;
}
.step-list strong{display:block;font-size:16px;margin-bottom:4px}
.step-list span{display:block;font-size:14.5px;color:var(--text-2);line-height:1.75}

.info-list{list-style:none;display:grid;gap:14px;margin:26px 0 0}
.info-list li{
  padding:20px 22px;border-radius:14px;background:var(--bg-1);border:1px solid var(--line);
  border-left:3px solid rgba(43,227,196,.5);
  transition:transform .2s ease-out,border-color .2s ease-out;
}
.info-list li:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);border-left-color:var(--brand)}
.info-list strong{display:block;font-size:16px;margin-bottom:6px}
.info-list p{margin:0;font-size:14.5px;color:var(--text-2)}
.info-list p:last-child{margin-bottom:0}

.note{
  margin:24px 0 0;padding:16px 20px;border-radius:14px;font-size:14.5px;color:var(--text-2);
  background:linear-gradient(160deg,rgba(43,227,196,.08),rgba(255,255,255,.02));
  border:1px solid rgba(43,227,196,.22);
}
.note i{color:var(--brand);margin-right:8px}

.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:26px}
.check-item{
  display:flex;gap:14px;padding:20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.check-item:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);box-shadow:var(--glow)}
.check-item i{color:var(--brand);font-size:17px;margin-top:4px}
.check-item strong{display:block;font-size:15.5px;margin-bottom:4px}
.check-item span{display:block;font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- faq ---------- */
.faq{margin-top:26px}
.faq .accordion-item{
  background:var(--glass);border:1px solid var(--line);border-radius:16px !important;
  margin-bottom:14px;overflow:hidden;
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.faq .accordion-item:hover{border-color:rgba(43,227,196,.28)}
.faq .accordion-button{
  background:transparent;color:var(--text);font-size:16px;font-weight:600;
  padding:19px 22px;box-shadow:none;border-radius:16px !important;
}
.faq .accordion-button:not(.collapsed){
  color:var(--brand);background:rgba(43,227,196,.06);box-shadow:inset 3px 0 0 var(--brand);
}
.faq .accordion-button:focus{box-shadow:inset 3px 0 0 var(--brand),0 0 0 2px rgba(43,227,196,.35)}
.faq .accordion-button::after{
  background-image:none;content:"+";width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;line-height:1;color:var(--text-2);
  transition:transform .22s ease-out,color .22s ease-out;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand)}
.faq .accordion-body{padding:4px 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- cta ---------- */
.cta-band{
  margin:8px 0 72px;padding:40px 44px;border-radius:24px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(140deg,rgba(43,227,196,.12),rgba(255,122,47,.07));
  border:1px solid var(--line);
}
.cta-band h3{font-size:clamp(19px,2.2vw,24px);margin-bottom:8px}
.cta-band p{margin:0;font-size:14.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn-main{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04140F}
.btn-main:hover{color:#04140F;transform:translateY(-2px);box-shadow:var(--glow)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}

/* ---------- category links ---------- */
.cat-section{padding-bottom:88px}
.cat-section h2{font-size:clamp(20px,2.3vw,26px);margin-bottom:10px}
.cat-section>p{color:var(--text-2);max-width:720px;margin-bottom:28px}
.cat-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.cat-link{
  display:flex;flex-direction:column;gap:10px;padding:24px;border-radius:var(--r-card);
  background:var(--bg-1);border:1px solid var(--line);color:var(--text);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.cat-link:hover{color:var(--text);transform:translateY(-3px);border-color:rgba(43,227,196,.35);box-shadow:var(--glow)}
.cat-link i{color:var(--brand);font-size:18px}
.cat-link strong{font-size:16px}
.cat-link span{font-size:13.5px;color:var(--text-2);line-height:1.7}
.cat-link em{font-style:normal;font-size:13px;color:var(--brand);margin-top:auto}

/* ---------- footer ---------- */
.site-footer{background:#050B11;border-top:1px solid var(--line);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{margin:16px 0 0;font-size:14px;color:var(--text-2);max-width:300px;line-height:1.8}
.footer-col h4{font-size:14px;margin-bottom:16px;letter-spacing:.4px}
.footer-col a{display:block;font-size:14px;color:var(--text-2);padding:6px 0}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.footer-bottom .to-top{color:var(--text-2);display:inline-flex;align-items:center;gap:8px}
.footer-bottom .to-top:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:40px}
}
@media (max-width:991.98px){
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    padding:14px;border-radius:20px;background:rgba(11,24,34,.96);
    border:1px solid var(--line);
    -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 14px;font-size:15px}
  .nav-links a.is-active::after{left:14px;right:auto;width:22px;bottom:6px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .btn-cta{display:none}
  .page-banner{padding:126px 0 48px}
  .doc-layout{grid-template-columns:1fr;gap:32px;padding:48px 0 12px}
  .toc{
    position:static;display:flex;gap:8px;overflow-x:auto;padding:12px;
    scrollbar-width:none;
  }
  .toc::-webkit-scrollbar{display:none}
  .toc h4{display:none}
  .toc a{
    white-space:nowrap;border-left:none;border-bottom:2px solid transparent;border-radius:10px;
    padding:8px 12px;
  }
  .toc a.is-active{border-left-color:transparent;border-bottom-color:var(--brand)}
  .check-grid{grid-template-columns:1fr}
  .cat-links{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-band{padding:32px 26px}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px}
  .page-banner{padding:112px 0 40px}
  .page-banner h1{font-size:clamp(24px,7vw,32px)}
  .sec-num{font-size:30px}
  .step-list li{padding:16px 18px 16px 60px}
  .step-list li::before{left:16px;top:17px}
  .doc-section{padding-bottom:36px;margin-bottom:36px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{flex-direction:column;align-items:flex-start}
  .btn-main,.btn-ghost{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg-0:#070F16;
  --bg-1:#0B1822;
  --bg-2:#102230;
  --brand:#2BE3C4;
  --brand-deep:#14A98F;
  --accent:#FF7A2F;
  --text:#E8F1F5;
  --text-2:#9FB3BF;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --shadow-1:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px rgba(0,0,0,.45);
  --shadow-hover:inset 0 1px 0 rgba(255,255,255,.08), 0 22px 46px rgba(0,0,0,.5);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  background:
    radial-gradient(900px 520px at 82% -12%, rgba(43,227,196,.10), transparent 62%),
    radial-gradient(760px 460px at -6% 18%, rgba(255,122,47,.06), transparent 62%),
    var(--bg-0);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--text-2);text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.4px}
p{margin:0 0 18px}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1040;padding:18px 20px;transition:padding .26s var(--ease)}
.site-header.is-scrolled{padding:8px 20px}
.nav-shell{
  max-width:1160px;margin:0 auto;display:flex;align-items:center;gap:16px;
  padding:10px 16px;border-radius:999px;
  background:rgba(11,24,34,.55);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 12px 34px rgba(0,0,0,.35);
  transition:background-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(11,24,34,.85);box-shadow:0 16px 40px rgba(0,0,0,.5)}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;display:flex;align-items:center;justify-content:center;
  border-radius:11px;color:#06231E;font-size:15px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(43,227,196,.35);
}
.brand-text{display:flex;align-items:baseline;gap:5px;line-height:1}
.brand-text strong{font-size:17px;letter-spacing:.5px;color:var(--text)}
.brand-text em{font-style:normal;font-size:12px;letter-spacing:.5px;color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;padding:9px 13px;border-radius:999px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);text-shadow:0 0 12px rgba(43,227,196,.45)}
.nav-links a.is-active{color:var(--brand)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-links-cta{display:none}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;font-size:14px;font-weight:600;
  color:#2A1003;background:linear-gradient(135deg,var(--accent),#FF9A55);
  border:0;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-cta:hover{color:#2A1003;transform:translateY(-2px);box-shadow:0 0 22px rgba(255,122,47,.40)}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text);font-size:16px;cursor:pointer;margin-left:auto;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{color:var(--brand);border-color:rgba(43,227,196,.35)}
.nav-mask{
  position:fixed;inset:0;z-index:1035;background:rgba(4,10,15,.62);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
  opacity:0;pointer-events:none;transition:opacity .26s var(--ease);
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

/* ---------- 文章头部 ---------- */
.article-hero{position:relative;padding:158px 0 0;overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.028) 0 1px,transparent 1px 26px);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 78%);
}
.crumb{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(159,179,191,.5)}
.crumb .current{color:var(--text-2);opacity:.85}
.article-title{
  position:relative;
  margin:16px 0 20px;max-width:1020px;
  font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.6px;
}
.meta-row{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding-bottom:30px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.meta-row .sep{color:rgba(159,179,191,.45)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12px;letter-spacing:.5px;
  color:var(--brand);background:var(--glass);border:1px solid rgba(43,227,196,.28);
}
.meta-num{font-family:"Barlow","DIN Alternate",-apple-system,sans-serif;letter-spacing:.4px}

/* ---------- 正文布局 ---------- */
.article-section{padding:52px 0 8px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:52px;align-items:start}
.article-main{min-width:0}
.article-body{max-width:820px;font-size:16px;line-height:1.9;color:#D9E6EC}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:15px;
  font-size:clamp(20px,2.2vw,26px);line-height:1.45;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;bottom:.42em;width:3px;border-radius:2px;
  background:var(--brand);
}
.article-body h3{margin:28px 0 12px;font-size:18px;line-height:1.5}
.article-body h4{margin:22px 0 10px;font-size:17px;color:var(--text-2)}
.article-body ul,.article-body ol{margin:0 0 18px;padding:0;list-style:none}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--brand);
}
.article-body ol{counter-reset:artlist}
.article-body ol>li{counter-increment:artlist}
.article-body ol>li::before{
  content:counter(artlist);position:absolute;left:0;top:.35em;
  font-family:"Barlow",-apple-system,sans-serif;font-size:13px;font-weight:700;
  color:var(--brand);letter-spacing:.5px;
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;background:rgba(255,255,255,.045);color:var(--text-2);
}
.article-body img{border-radius:var(--r-img);width:100%;margin:22px 0 8px;border:1px solid var(--line)}
.article-body figcaption{font-size:13px;text-align:center;color:var(--text-2);margin-bottom:18px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.article-body th{background:var(--bg-2);color:var(--text);text-align:left;padding:12px 14px;font-weight:600;border-bottom:1px solid var(--line)}
.article-body td{padding:12px 14px;color:var(--text-2);border-bottom:1px solid var(--line)}
.article-body tr:last-child td{border-bottom:0}
.article-body strong{color:#fff}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(43,227,196,.35)}
.article-body a:hover{color:#7BF3DE}

/* ---------- 目录 ---------- */
.toc{
  position:sticky;top:104px;
  padding:22px 20px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.toc h4{margin-bottom:12px;font-size:13px;letter-spacing:.6px;color:var(--text-2);font-weight:600}
.toc-list{display:flex;flex-direction:column;max-height:56vh;overflow:auto}
.toc-list a{
  display:block;padding:7px 0 7px 12px;font-size:14px;line-height:1.6;
  color:var(--text-2);border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--text)}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand)}
.toc-toggle{
  display:none;width:100%;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;margin-bottom:18px;border-radius:var(--r-input);cursor:pointer;
  background:var(--glass);border:1px solid var(--line);color:var(--text);font-size:14px;
}
.toc-toggle i{transition:transform .22s var(--ease);color:var(--brand)}
.toc-toggle.is-open i{transform:rotate(180deg)}
.toc-mobile{display:none;flex-direction:column;margin:-8px 0 22px;padding:12px 16px;border-radius:var(--r-input);background:var(--glass);border:1px solid var(--line)}
.toc-mobile.is-open{display:flex}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.tag:hover{color:var(--brand);border-color:rgba(43,227,196,.35)}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:flex-start;gap:14px;
  min-height:180px;padding:32px 28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.empty-icon{
  width:48px;height:48px;display:flex;align-items:center;justify-content:center;
  border-radius:14px;border:1px dashed rgba(43,227,196,.4);color:var(--brand);font-size:18px;
}
.empty-state h2{font-size:20px;margin:0}
.empty-state p{margin:0;color:var(--text-2);max-width:620px}
.empty-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}

/* ---------- 按钮 ---------- */
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{color:#06231E;background:linear-gradient(135deg,var(--brand),var(--brand-deep));border:1px solid transparent}
.btn-primary:hover{color:#06231E;transform:translateY(-2px);box-shadow:0 0 22px rgba(43,227,196,.35)}
.btn-ghost{color:var(--text);background:transparent;border:1px solid var(--line)}
.btn-ghost:hover{color:var(--brand);border-color:rgba(43,227,196,.45);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--brand);font-weight:600}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 相关推荐 ---------- */
.related-section{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{margin:6px 0 0;color:var(--text-2);font-size:15px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rc-card{
  display:block;border-radius:var(--r-card);overflow:hidden;
  background:var(--bg-1);border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rc-card:hover{transform:translateY(-3px);border-color:rgba(43,227,196,.35);box-shadow:var(--shadow-hover)}
.rc-media{position:relative;aspect-ratio:16/9;background:var(--bg-2);border-bottom:1px solid var(--line)}
.rc-media img{width:100%;height:100%;object-fit:cover}
.rc-media .rc-tag{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.4px;color:var(--brand);
  background:rgba(7,15,22,.72);border:1px solid rgba(43,227,196,.3);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.rc-body{padding:20px 22px 24px}
.rc-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rc-card:hover .rc-body h3{color:#fff}
.rc-body p{margin:0;font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--text-2)}
.rc-foot .num{font-family:"Barlow",-apple-system,sans-serif;letter-spacing:.4px;color:rgba(159,179,191,.8)}

/* ---------- 返回栏目 / 联系 ---------- */
.back-section{padding:72px 0 0}
.back-panel{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:32px 34px;border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.back-panel h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px}
.back-panel p{margin:0;color:var(--text-2);font-size:15px;max-width:600px}
.contact-section{padding:56px 0 96px}
.contact-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 28px;border-radius:var(--r-card);background:var(--bg-1);border:1px solid var(--line);
}
.contact-strip .cs-item{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--text-2)}
.contact-strip .cs-item i{color:var(--brand)}

/* ---------- 页脚 ---------- */
.site-footer{background:#050C12;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{color:var(--text-2);font-size:14px;margin:16px 0 0;max-width:320px;line-height:1.8}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col a{display:block;padding:5px 0;font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13px;color:rgba(159,179,191,.85);
}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2)}
.to-top:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc{display:none}
  .toc-toggle{display:flex}
  .article-body{max-width:100%}
}
@media (max-width:991.98px){
  .site-header{padding:12px 16px}
  .nav-toggle{display:inline-flex}
  .btn-cta{display:none}
  .nav-links{
    position:fixed;top:0;right:0;z-index:1045;
    width:min(320px,86vw);height:100vh;
    flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:86px 22px 30px;
    background:#0B1822;border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(0,0,0,.55);
    transform:translateX(105%);
    transition:transform .3s var(--ease);
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{padding:14px 4px;font-size:16px;border-radius:0;border-bottom:1px solid var(--line)}
  .nav-links a.is-active::after{left:4px;transform:none;bottom:8px;width:16px}
  .nav-links-cta{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    margin-top:22px;padding:14px 18px !important;border-radius:var(--r-input) !important;
    border:0 !important;color:#2A1003 !important;font-weight:600;
    background:linear-gradient(135deg,var(--accent),#FF9A55);
  }
  .nav-links-cta:hover{transform:translateY(-2px);box-shadow:0 0 22px rgba(255,122,47,.4)}
  .article-hero{padding-top:126px}
  .article-section{padding:38px 0 0}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .related-section,.back-section{padding-top:56px}
  .contact-section{padding:44px 0 72px}
}
@media (max-width:767.98px){
  .article-title{font-size:26px}
  .meta-row{font-size:13px;gap:9px}
  .back-panel{padding:26px 22px}
  .contact-strip{padding:22px 20px}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .article-hero{padding-top:114px}
  .brand-text strong{font-size:16px}
  .empty-state{padding:26px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#070F16;
  --bg-1:#0B1822;
  --bg-2:#102230;
  --brand:#2BE3C4;
  --brand-deep:#14A98F;
  --accent:#FF7A2F;
  --text:#E8F1F5;
  --text-2:#9FB3BF;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.06);
  --glass:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  --r-card:18px;
  --r-img:16px;
  --r-input:12px;
  --r-btn:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.06) inset,0 18px 40px rgba(0,0,0,.45);
  --shadow-soft:0 1px 0 rgba(255,255,255,.05) inset,0 10px 26px rgba(0,0,0,.35);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Barlow","DIN Alternate","Helvetica Neue",Arial,sans-serif;
  --gap-sec:96px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(43,227,196,.10),transparent 70%),
    radial-gradient(560px 360px at 96% 8%,rgba(255,122,47,.07),transparent 72%);
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-2);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
p{margin:0 0 18px}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:-.3px}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(43,227,196,.28)}

.wrap{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:18px;
  left:0;
  right:0;
  z-index:1000;
  transition:top .24s var(--ease);
}
.nav-shell{
  width:calc(100% - 40px);
  max-width:1160px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 14px 12px 18px;
  border-radius:999px;
  background:rgba(11,24,34,.55);
  border:1px solid var(--line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:padding .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled .nav-shell{
  padding:8px 12px 8px 16px;
  background:rgba(11,24,34,.85);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(150deg,rgba(43,227,196,.92),rgba(20,169,143,.92));
  color:#04161A;
  font-size:15px;
  box-shadow:0 0 0 1px rgba(43,227,196,.35);
}
.brand-text{display:flex;align-items:baseline;gap:6px;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-2);letter-spacing:.6px}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:block;
  padding:8px 14px;
  font-size:14px;
  color:var(--text-2);
  border-radius:999px;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-links a.is-active{color:var(--brand)}
.nav-links a.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--brand);
}
.btn-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:999px;
  background:linear-gradient(140deg,#FF8B45,#FF7A2F);
  color:#16090200;
  color:#1B0C02;
  font-size:14px;
  font-weight:600;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-cta:hover{
  transform:translateY(-2px);
  color:#1B0C02;
  box-shadow:0 0 22px rgba(255,122,47,.40);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.04);
  color:var(--text);
  cursor:pointer;
}
@media (max-width:991px){
  .nav-toggle{display:grid;place-items:center;margin-left:auto}
  .btn-cta{display:none}
  .nav-links{
    position:fixed;
    top:0;right:0;
    height:100vh;
    width:min(320px,86vw);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:92px 22px 32px;
    margin:0;
    background:rgba(8,17,24,.96);
    border-left:1px solid var(--line);
    backdrop-filter:blur(18px);
    transform:translateX(105%);
    transition:transform .28s var(--ease);
  }
  body.nav-open .nav-links{transform:translateX(0)}
  body.nav-open::after{
    content:"";
    position:fixed;inset:0;
    background:rgba(3,8,12,.6);
    backdrop-filter:blur(4px);
    z-index:900;
  }
  .nav-shell{position:relative;z-index:1001}
  .nav-links a{padding:14px 12px;font-size:15px;border-bottom:1px solid var(--line-2);border-radius:8px}
  .nav-links a.is-active::after{display:none}
}

/* ============ 通用板块与标题 ============ */
main{position:relative;z-index:1;padding-top:96px}
.section{padding:var(--gap-sec) 0}
.section--tight{padding:64px 0}
.section-head{max-width:820px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  font-size:12px;
  letter-spacing:.5px;
  color:var(--brand);
  margin-bottom:16px;
}
.eyebrow i{font-size:11px}
h2.section-title{font-size:clamp(24px,3vw,36px);line-height:1.3;margin-bottom:14px}
.section-desc{color:var(--text-2);font-size:15px;max-width:760px;margin:0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ============ Hero 窄条 ============ */
.hero{
  position:relative;
  margin:0 0 8px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,15,22,.94) 0%,rgba(7,15,22,.86) 46%,rgba(7,15,22,.72) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:52px 0 56px;
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--text-2);
  margin-bottom:22px;
}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{opacity:.5}
.crumb span.now{color:var(--text)}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.22;
  letter-spacing:-.5px;
  max-width:900px;
}
.hero-sub{
  margin-top:18px;
  max-width:620px;
  color:var(--text-2);
  font-size:17px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta div{min-width:130px}
.hero-meta b{
  display:block;
  font-family:var(--font-num);
  font-size:26px;
  font-weight:700;
  color:var(--brand);
  line-height:1.2;
}
.hero-meta small{display:block;color:var(--text-2);font-size:13px;margin-top:4px}

/* ============ 按钮 ============ */
.btn-main,.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-main{
  background:linear-gradient(140deg,#FF8B45,#FF7A2F);
  color:#1B0C02;
}
.btn-main:hover{transform:translateY(-2px);color:#1B0C02;box-shadow:0 0 22px rgba(255,122,47,.40)}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  color:var(--text);
  border-color:rgba(43,227,196,.6);
  box-shadow:0 0 22px rgba(43,227,196,.22);
}
.btn-sm{height:44px;padding:0 18px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 版本对照表 ============ */
.ver-shell{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
}
.ver-head,.ver-row{
  display:grid;
  grid-template-columns:200px 1fr 180px;
  gap:18px;
  align-items:center;
  padding:16px 24px;
}
.ver-head{
  background:rgba(255,255,255,.04);
  border-bottom:1px solid var(--line);
  font-size:12px;
  letter-spacing:.6px;
  color:var(--text-2);
}
.ver-row{border-bottom:1px solid var(--line-2);transition:background .2s var(--ease)}
.ver-row:last-child{border-bottom:0}
.ver-row:hover{background:rgba(43,227,196,.05)}
.ver-no{
  font-family:var(--font-num);
  font-size:18px;
  font-weight:700;
  color:var(--brand);
  letter-spacing:.5px;
}
.ver-plat{font-size:15px;color:var(--text)}
.ver-plat em{font-style:normal;color:var(--text-2);font-size:13px;margin-left:8px}
.ver-time{
  font-family:var(--font-num);
  font-size:14px;
  color:var(--text-2);
  text-align:right;
}
.ver-note{
  display:flex;gap:12px;align-items:flex-start;
  margin-top:20px;
  padding:18px 22px;
  border-radius:14px;
  border:1px dashed rgba(43,227,196,.35);
  background:rgba(43,227,196,.05);
  font-size:14px;
  color:var(--text-2);
}
.ver-note i{color:var(--brand);margin-top:4px}
.ver-note b{color:var(--text)}
@media (max-width:767px){
  .ver-head{display:none}
  .ver-row{grid-template-columns:1fr;gap:4px;padding:18px 20px}
  .ver-time{text-align:left}
  .ver-time::before{content:"更新时间 ";color:var(--text-2)}
}

/* ============ 卡片网格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:rgba(43,227,196,.35);
  box-shadow:var(--shadow-card),0 0 22px rgba(43,227,196,.16);
}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  background:var(--bg-2);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,15,22,0) 40%,rgba(7,15,22,.72) 100%);
}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  font-size:12px;
  letter-spacing:.5px;
  color:var(--brand);
  width:fit-content;
}
.badge.on-media{position:absolute;left:16px;top:16px;z-index:2;background:rgba(7,15,22,.72);backdrop-filter:blur(8px)}
.card h3{font-size:20px;line-height:1.45}
.card p{color:var(--text-2);font-size:14px;margin:0}
.card-list{margin-top:auto;padding-top:14px;border-top:1px solid var(--line-2);display:flex;flex-direction:column;gap:8px}
.card-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--text-2);
}
.card-list li i{color:var(--brand);font-size:11px;margin-top:7px}
@media (max-width:991px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .grid-3,.grid-2{grid-template-columns:1fr}
}

/* ============ 要点清单 ============ */
.check-panel{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  padding:32px;
  box-shadow:var(--shadow-soft);
}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 28px;margin-top:8px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;
  border-radius:14px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--line-2);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-list li:hover{border-color:rgba(43,227,196,.35);background:rgba(43,227,196,.05)}
.check-list i{
  flex:0 0 30px;width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:9px;
  background:rgba(43,227,196,.12);
  color:var(--brand);
  font-size:13px;
}
.check-list b{display:block;font-size:15px;color:var(--text);margin-bottom:2px}
.check-list span{font-size:14px;color:var(--text-2)}
@media (max-width:767px){.check-list{grid-template-columns:1fr}.check-panel{padding:24px}}

/* ============ 步骤轨道 ============ */
.steps{display:flex;flex-direction:column;gap:0}
.step{
  display:grid;
  grid-template-columns:96px 1fr;
  gap:26px;
  padding:30px 0;
  border-top:1px solid var(--line);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step-no{
  font-family:var(--font-num);
  font-size:44px;
  font-weight:700;
  line-height:1;
  color:transparent;
  -webkit-text-stroke:1px rgba(43,227,196,.55);
}
.step h3{font-size:20px;margin-bottom:10px}
.step p{color:var(--text-2);font-size:15px;margin:0;max-width:760px}
@media (max-width:767px){
  .step{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .step-no{font-size:34px}
}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:960px}
.faq-item{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  overflow:hidden;
  transition:border-color .2s var(--ease);
}
.faq-item[open]{border-color:rgba(43,227,196,.35)}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:20px 58px 20px 26px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:24px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:400;
  color:var(--brand);
  transition:transform .24s var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.faq-item[open] summary::before{opacity:1}
.faq-body{padding:0 26px 22px;color:var(--text-2);font-size:15px}
.faq-body p:last-child{margin-bottom:0}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  border-radius:24px;
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(16,34,48,.95),rgba(11,24,34,.95));
  overflow:hidden;
  padding:52px 48px;
  box-shadow:var(--shadow-card);
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-80px;top:-80px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(43,227,196,.12),transparent 68%);
}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:repeating-linear-gradient(90deg,rgba(43,227,196,.45) 0 22px,transparent 22px 44px);
  opacity:.6;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:10px}
.cta-inner p{color:var(--text-2);margin:0;max-width:560px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (max-width:767px){.cta-band{padding:34px 24px}}

/* ============ 分类互链 ============ */
.cat-links{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-link{
  display:block;
  padding:26px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.cat-link:hover{
  transform:translateY(-2px);
  border-color:rgba(43,227,196,.35);
  background:var(--bg-2);
  box-shadow:0 0 22px rgba(43,227,196,.16);
}
.cat-link .num{
  font-family:var(--font-num);
  font-size:13px;
  color:var(--brand);
  letter-spacing:1px;
  display:block;
  margin-bottom:12px;
}
.cat-link h3{font-size:19px;margin-bottom:8px;color:var(--text)}
.cat-link:hover h3{color:var(--brand)}
.cat-link p{font-size:14px;color:var(--text-2);margin:0}
@media (max-width:991px){.cat-links{grid-template-columns:1fr}}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:96px;
  background:#040A0F;
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:48px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:18px;max-width:320px}
.footer-col h4{font-size:14px;letter-spacing:.5px;color:var(--text);margin-bottom:16px}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:6px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;
  align-items:center;justify-content:space-between;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
}
.to-top{display:inline-flex;align-items:center;gap:8px;color:var(--text-2)}
.to-top:hover{color:var(--brand)}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:48px}
}

/* ============ 响应式板块间距 ============ */
@media (max-width:991px){
  :root{--gap-sec:72px}
  main{padding-top:88px}
  .hero-inner{padding:40px 0 44px}
}
@media (max-width:575px){
  :root{--gap-sec:56px}
  .wrap{padding:0 20px}
  .hero-sub{font-size:15px}
  .hero-meta{gap:18px}
  .cta-actions .btn-main,.cta-actions .btn-ghost,.hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg-0:#070F16;
  --bg-1:#0B1822;
  --bg-2:#102230;
  --brand:#2BE3C4;
  --brand-deep:#14A98F;
  --accent:#FF7A2F;
  --text:#E8F1F5;
  --text-2:#9FB3BF;
  --line:rgba(255,255,255,.10);
  --glass:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  --r-card:18px;
  --r-img:16px;
  --r-in:12px;
  --r-pill:999px;
  --shadow:inset 0 1px 0 rgba(255,255,255,.06), 0 18px 40px rgba(0,0,0,.45);
  --glow-brand:0 0 22px rgba(43,227,196,.35);
  --glow-accent:0 0 22px rgba(255,122,47,.40);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--text-2);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.28;color:#fff}
p{margin:0 0 18px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.wrap{max-width:1320px}}
.mono{font-variant-numeric:tabular-nums;font-family:"Barlow","DIN Alternate",-apple-system,"PingFang SC",sans-serif}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:100;transition:top .24s ease-out}
.nav-shell{
  max-width:1160px;margin:0 auto;padding:12px 18px;
  display:flex;align-items:center;gap:18px;
  background:rgba(11,24,34,.55);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:padding .24s ease-out,background .24s ease-out;
}
.site-header.is-scrolled{top:8px}
.site-header.is-scrolled .nav-shell{padding:8px 18px;background:rgba(11,24,34,.85)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  color:#04211C;font-size:15px;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:15px;color:#fff;letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-2);letter-spacing:1.2px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.nav-links a:hover{color:#fff;text-shadow:0 0 14px rgba(43,227,196,.45)}
.nav-links a.is-active{color:var(--brand)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-cta-mobile{display:none}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:0 18px;height:44px;border-radius:var(--r-in);
  background:var(--accent);color:#1A0C02;font-weight:700;font-size:15px;
  border:none;transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-cta:hover{color:#1A0C02;transform:translateY(-2px);box-shadow:var(--glow-accent)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid var(--line);color:var(--text);
  place-items:center;font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(43,227,196,.45);color:var(--brand)}
body.nav-open::before{
  content:"";position:fixed;inset:0;background:rgba(3,8,12,.62);
  backdrop-filter:blur(4px);z-index:95;
}
@media (max-width:991.98px){
  .nav-shell{margin:0 14px;padding:10px 14px}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);
    background:rgba(7,15,22,.97);
    border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:4px;
    padding:96px 22px 32px;margin-left:0;
    transform:translateX(102%);
    transition:transform .28s ease-out;
    overflow-y:auto;z-index:101;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-links a{padding:12px 14px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.06);border-radius:0}
  .nav-links a.is-active::after{display:none}
  .nav-links a.is-active{background:rgba(43,227,196,.08);border-radius:12px}
  .nav-cta-mobile{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    margin-top:20px;height:48px;border-radius:12px;
    background:var(--accent);color:#1A0C02 !important;font-weight:700;
  }
  .btn-cta{display:none}
  .nav-toggle{display:grid;margin-left:auto}
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.bg-1{background:var(--bg-1)}
.bg-stripes{position:relative;isolation:isolate}
.bg-stripes::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:repeating-linear-gradient(115deg,rgba(43,227,196,.05) 0 2px,transparent 2px 26px);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(43,227,196,.10);border:1px solid rgba(43,227,196,.28);
  color:var(--brand);font-size:12.5px;letter-spacing:.5px;margin-bottom:18px;
}
.sec-head{max-width:820px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-title{font-size:clamp(24px,3vw,36px);letter-spacing:-.3px}
.sec-desc{color:var(--text-2);font-size:16px;margin-top:14px;max-width:820px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-in);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out,background .2s ease-out,color .2s ease-out;}
.btn-primary{background:var(--brand);color:#04211C;border-radius:var(--r-pill)}
.btn-primary:hover{color:#04211C;transform:translateY(-2px);box-shadow:var(--glow-brand)}
.btn-accent{background:var(--accent);color:#1A0C02;border-radius:var(--r-pill)}
.btn-accent:hover{color:#1A0C02;transform:translateY(-2px);box-shadow:var(--glow-accent)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px}
.btn-text i{transition:transform .2s ease-out}
.btn-text:hover{color:var(--brand);text-decoration:underline}
.btn-text:hover i{transform:translateX(4px)}

/* ============ 分类页 Hero（居中） ============ */
.cat-hero{
  position:relative;padding:186px 0 92px;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  text-align:center;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 0%,rgba(43,227,196,.14),transparent 62%),
             rgba(7,15,22,.86);
}
.cat-hero .wrap{position:relative;z-index:2}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,52px);letter-spacing:-.5px;line-height:1.22;
  max-width:900px;margin:0 auto;
}
.cat-hero .lead{
  color:var(--text-2);font-size:17px;max-width:640px;margin:20px auto 0;
}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:34px}
.hero-metrics{
  display:flex;flex-wrap:wrap;justify-content:center;gap:14px 44px;
  margin-top:52px;padding-top:30px;border-top:1px solid var(--line);
}
.hero-metrics div{min-width:120px}
.hero-metrics .num{font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.5px}
.hero-metrics .lab{font-size:13.5px;color:var(--text-2);margin-top:2px}
.hero-hint{font-size:13px;color:var(--text-2);letter-spacing:.6px;margin-top:34px}

/* ============ 面包屑 ============ */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-2)}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{margin:0 8px;opacity:.5}
.crumb .cur{color:var(--text)}

/* ============ 要点清单卡 ============ */
.cards-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.g-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  height:100%;
}
.g-card:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);box-shadow:var(--shadow),var(--glow-brand)}
.g-card .ic{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(43,227,196,.35);color:var(--brand);font-size:16px;margin-bottom:16px;
}
.g-card h3{font-size:18px;margin-bottom:10px}
.g-card p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin:0}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(43,227,196,.10);border:1px solid rgba(43,227,196,.26);
  color:var(--brand);font-size:12px;letter-spacing:.5px;
}
.badge-warn{background:rgba(255,122,47,.10);border-color:rgba(255,122,47,.30);color:var(--accent)}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:11px;top:10px;bottom:26px;width:1px;
  background:linear-gradient(180deg,rgba(43,227,196,.65),rgba(43,227,196,.06));
}
.tl-item{position:relative;padding-left:48px;padding-bottom:44px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:4px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--brand);
  box-shadow:0 0 0 5px rgba(43,227,196,.10);
}
.tl-item:last-child .tl-dot{background:var(--brand);box-shadow:0 0 0 5px rgba(43,227,196,.18)}
.tl-step{font-size:12.5px;letter-spacing:1.6px;color:var(--brand);display:block;margin-bottom:6px}
.tl-item h3{font-size:20px;margin-bottom:10px}
.tl-item p{color:var(--text-2);font-size:15.5px;max-width:820px}
.tl-list{display:grid;gap:8px;margin-top:14px}
.tl-list li{position:relative;padding-left:18px;color:var(--text-2);font-size:14.5px}
.tl-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;
  background:var(--brand);border-radius:2px;opacity:.85;
}
.tl-note{
  margin-top:16px;padding:14px 18px;border-radius:var(--r-in);
  background:rgba(255,255,255,.03);border-left:3px solid var(--brand);
  color:var(--text-2);font-size:14.5px;
}

/* ============ 图文 / 异常信号 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center}
.split .figure{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);aspect-ratio:16/11;
}
.split .figure img{width:100%;height:100%;object-fit:cover}
.signal-list{display:grid;gap:0;margin-top:26px}
.signal-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 4px;border-bottom:1px solid var(--line);
  transition:padding-left .2s ease-out,border-color .2s ease-out;
}
.signal-list li:hover{padding-left:12px;border-bottom-color:rgba(43,227,196,.35)}
.signal-list i{color:var(--accent);font-size:14px;margin-top:8px}
.signal-list strong{display:block;color:#fff;font-size:16px;margin-bottom:2px}
.signal-list span{color:var(--text-2);font-size:14px}

/* ============ FAQ 手风琴 ============ */
.faq-acc{display:grid;gap:14px}
.faq-acc .accordion-item{
  background:var(--glass);
  border:1px solid var(--line) !important;
  border-radius:var(--r-card) !important;
  overflow:hidden;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.faq-acc .accordion-button{
  background:transparent;color:#fff;font-size:16.5px;font-weight:600;
  padding:20px 22px;border-radius:0 !important;box-shadow:none !important;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  transition:background .2s ease-out,color .2s ease-out;
}
.faq-acc .accordion-button::after{display:none}
.faq-acc .accordion-button:hover{background:rgba(255,255,255,.03)}
.faq-acc .accordion-button:not(.collapsed){
  background:rgba(43,227,196,.06);color:#fff;
  box-shadow:inset 3px 0 0 var(--brand) !important;
}
.faq-acc .q-ic{color:var(--text-2);font-size:14px;transition:transform .24s ease-out,color .24s ease-out;flex-shrink:0}
.faq-acc .accordion-button:not(.collapsed) .q-ic{transform:rotate(45deg);color:var(--brand)}
.faq-acc .accordion-body{
  padding:0 22px 22px;color:var(--text-2);font-size:15px;line-height:1.9;
}
.faq-acc .accordion-body strong{color:var(--text)}

/* ============ 分类互链 ============ */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cross-card{
  display:block;padding:26px 24px;border-radius:var(--r-card);
  background:var(--bg-2);border:1px solid var(--line);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.cross-card:hover{transform:translateY(-2px);border-color:rgba(43,227,196,.35);box-shadow:var(--glow-brand)}
.cross-card h3{font-size:18px;margin:14px 0 8px;color:#fff}
.cross-card p{color:var(--text-2);font-size:14.5px;margin:0 0 14px}
.cross-card.is-now{border-color:rgba(43,227,196,.45);background:linear-gradient(160deg,rgba(43,227,196,.10),rgba(255,255,255,.02))}
.cross-card .go{color:var(--brand);font-size:14px;display:inline-flex;align-items:center;gap:6px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(43,227,196,.24);
  background:linear-gradient(140deg,rgba(43,227,196,.12),rgba(255,255,255,.02) 58%),var(--bg-1);
  padding:52px 44px;display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{color:var(--text-2);margin:0;max-width:640px}
.cta-band .acts{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.deco-grid{
  position:absolute;right:-40px;top:-40px;width:220px;height:220px;opacity:.14;
  background-image:radial-gradient(rgba(43,227,196,.9) 1px,transparent 1px);
  background-size:14px 14px;pointer-events:none;
}

/* ============ 页脚 ============ */
.site-footer{background:#04090D;border-top:1px solid var(--line);padding:66px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{color:var(--text-2);font-size:14.5px;max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col a{display:block;color:var(--text-2);font-size:14.5px;padding:6px 0}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  color:var(--text-2);font-size:13.5px;
}
.to-top{color:var(--text-2);display:inline-flex;align-items:center;gap:6px}
.to-top:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .cards-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .cat-hero{padding:150px 0 72px}
  .split{grid-template-columns:1fr;gap:32px}
  .cross-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:38px 26px}
  .cta-band .acts{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:575.98px){
  .section{padding:56px 0}
  .cat-hero{padding:132px 0 60px}
  .cat-hero .hero-actions .btn{width:100%}
  .cards-4{grid-template-columns:1fr}
  .hero-metrics{gap:18px 28px}
  .hero-metrics div{min-width:104px}
  .footer-grid{grid-template-columns:1fr}
  .tl-item{padding-left:38px}
  .timeline::before{left:8px}
  .tl-dot{left:1px}
  .faq-acc .accordion-button{font-size:15.5px;padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}