/* roulang page: index */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --accent-dim:rgba(255,179,92,.14);
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --line:rgba(255,255,255,.09);
  --line-brand:rgba(36,211,196,.38);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 12px 32px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --glow-hover:0 10px 36px rgba(36,211,196,.45);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background:var(--bg-0);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(900px 900px at 6% -8%, rgba(36,211,196,.10), transparent 62%),
    radial-gradient(760px 760px at 100% 104%, rgba(255,179,92,.05), transparent 66%),
    repeating-linear-gradient(to right, rgba(255,255,255,.035) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(to bottom, rgba(255,255,255,.035) 0 1px, transparent 1px 48px);
}
body.drawer-open{overflow:hidden}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-1);letter-spacing:-.01em}
p{margin:0 0 18px;max-width:76ch}
p:last-child{margin-bottom:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-strong)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:var(--text-1)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num,.countdown,.stat-value,.price,.timeline-year{font-variant-numeric:tabular-nums}
.site-header,main,.site-footer{position:relative;z-index:1}

/* ---------- 公告条 ---------- */
.announce{
  position:relative;
  z-index:60;
  background:linear-gradient(90deg,rgba(36,211,196,.14),rgba(5,7,15,.4) 42%,rgba(255,179,92,.12));
  border-bottom:1px solid var(--line);
  font-size:13px;
}
.announce-inner{
  min-height:38px;
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:nowrap;
}
.announce-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:3px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line-brand);
  color:var(--brand);font-size:12px;letter-spacing:.06em;white-space:nowrap;
}
.pulse-dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 0 rgba(36,211,196,.55);animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(36,211,196,.5)}
  70%{box-shadow:0 0 0 9px rgba(36,211,196,0)}
  100%{box-shadow:0 0 0 0 rgba(36,211,196,0)}
}
.announce-text{color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.announce-count{
  margin-left:auto;display:flex;align-items:center;gap:8px;
  color:var(--accent);font-size:13px;white-space:nowrap;
}
.countdown{letter-spacing:.04em;font-weight:700}
.announce-close{
  width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);color:var(--text-3);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;line-height:1;transition:.18s ease-out;
}
.announce-close:hover{color:var(--text-1);border-color:var(--line-brand);background:var(--brand-dim)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .22s ease-out,border-color .22s ease-out;
}
.site-header.is-scrolled{border-bottom-color:var(--line-brand)}
.nav-wrap{height:72px;display:flex;align-items:center;gap:24px;transition:height .22s ease-out}
.site-header.is-scrolled .nav-wrap{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);flex-shrink:0}
.logo-mark{width:28px;height:28px;flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:18px;font-weight:700;letter-spacing:.01em}
.logo-sub{font-size:10px;letter-spacing:.22em;color:var(--text-3);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:14px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;transition:color .18s ease-out;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-badge{
  font-size:12px;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,179,92,.45);color:var(--accent);white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);font-weight:700;font-size:15px;
  padding:14px 26px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:var(--glow)}
.btn-primary:hover{background:var(--brand-strong);transform:translateY(-1px);box-shadow:var(--glow-hover);color:#04141A}
.btn-primary:active{transform:translateY(0);box-shadow:var(--glow)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-dim);color:var(--text-1)}
.btn-accent{background:var(--accent);color:#1A1004;box-shadow:0 8px 26px rgba(255,179,92,.24)}
.btn-accent:hover{background:#FFC57F;transform:translateY(-1px);color:#1A1004}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  color:var(--brand);border-bottom:1px solid transparent;transition:.18s ease-out;
}
.link-more .arrow{transition:transform .18s ease-out}
.link-more:hover{border-bottom-color:var(--brand)}
.link-more:hover .arrow{transform:translateX(4px)}
.hamburger{
  display:none;width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text-1);position:relative}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);
}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{
  position:fixed;inset:0;z-index:80;
  background:linear-gradient(160deg,rgba(10,16,32,.97),rgba(5,7,15,.98));
  backdrop-filter:blur(18px) saturate(140%);
  padding:28px 24px 40px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);
  color:var(--text-1);font-size:20px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  font-size:20px;font-weight:600;color:var(--text-1);
  padding:14px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:14px}
.drawer-phone{color:var(--text-2);font-size:15px}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.section-title{font-size:clamp(26px,3vw,38px);line-height:1.25;font-weight:700}
.section-lead{margin-top:16px;font-size:16px;color:var(--text-2);max-width:62ch}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:36px;flex-wrap:wrap}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.02);
}
.tag-brand{border-color:var(--line-brand);color:var(--brand);background:var(--brand-dim)}
.tag-accent{border-color:rgba(255,179,92,.42);color:var(--accent);background:var(--accent-dim)}
.glass{
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:88px 0 96px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.34;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 88%);
}
.hero-grid{
  position:relative;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero h1{font-size:clamp(34px,5.2vw,60px);line-height:1.14;font-weight:700}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-2);max-width:44ch}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  font-size:12px;letter-spacing:.06em;padding:7px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.03);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{
  display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;
  padding-top:26px;border-top:1px solid var(--line);
}
.metric-value{font-size:26px;font-weight:700;color:var(--text-1);line-height:1.2}
.metric-value em{font-style:normal;color:var(--brand);font-size:15px;margin-left:3px}
.metric-label{font-size:12px;color:var(--text-3);letter-spacing:.06em}

.browser-panel{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  padding:0 0 16px;
}
.browser-bar{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-bottom:1px solid var(--line);
}
.dot{width:9px;height:9px;border-radius:50%}
.dot-a{background:var(--accent)}
.dot-b{background:var(--brand)}
.dot-c{background:rgba(255,255,255,.22)}
.browser-url{
  margin-left:8px;flex:1;height:24px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:11px;color:var(--text-3);display:flex;align-items:center;padding:0 12px;
}
.browser-body{padding:16px 16px 0}
.browser-body img{width:100%;height:300px;object-fit:cover;border-radius:var(--r-md)}
.browser-strip{height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));margin-top:16px}
.float-card{
  position:absolute;padding:12px 16px;border-radius:var(--r-md);
  background:var(--bg-2);border:1px solid var(--line);
  box-shadow:var(--sh-1);animation:floaty 6s ease-in-out infinite;
}
.float-card .fc-value{font-size:18px;font-weight:700;color:var(--text-1)}
.float-card .fc-label{font-size:11px;color:var(--text-3);letter-spacing:.06em}
.fc-left{top:66px;left:-28px}
.fc-right{bottom:78px;right:-22px;animation-delay:-3s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ---------- 信任条 ---------- */
.trust-band{padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1)}
.trust-list{
  display:flex;align-items:center;gap:0;overflow-x:auto;scrollbar-width:none;
}
.trust-list::-webkit-scrollbar{display:none}
.trust-list li{
  padding:0 30px;font-size:15px;letter-spacing:.1em;color:var(--text-1);
  opacity:.4;white-space:nowrap;transition:opacity .2s ease-out;
  border-right:1px solid var(--line);
}
.trust-list li:first-child{padding-left:0}
.trust-list li:last-child{border-right:0}
.trust-list li:hover{opacity:.8}

/* ---------- 卖点 Bento ---------- */
.bento-top{display:grid;grid-template-columns:7fr 5fr;gap:24px}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{border-color:var(--line-brand);transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-a{display:flex;flex-direction:column;gap:18px}
.card-a img{width:100%;height:220px;object-fit:cover;border-radius:var(--r-img)}
.card h3{font-size:20px;line-height:1.4;font-weight:600}
.card p{font-size:15px;color:var(--text-2)}
.ring-wrap{display:flex;align-items:center;gap:20px;margin-top:6px}
.ring{
  width:112px;height:112px;border-radius:50%;flex-shrink:0;
  background:conic-gradient(var(--brand) 0 74%, var(--violet) 74% 92%, rgba(255,255,255,.07) 92% 100%);
  display:flex;align-items:center;justify-content:center;position:relative;
}
.ring::after{content:"";position:absolute;inset:9px;border-radius:50%;background:var(--bg-2)}
.ring-num{position:relative;font-size:22px;font-weight:700;color:var(--text-1)}
.ring-legend{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--text-2)}
.legend-item{display:flex;align-items:center;gap:8px}
.legend-dot{width:8px;height:8px;border-radius:2px}
.num-list{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin-top:24px}
.num-item{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line);
}
.num-item .idx{
  font-size:14px;font-weight:700;color:var(--brand);letter-spacing:.08em;
  min-width:34px;padding-top:4px;
}
.num-item h4{font-size:17px;font-weight:600;margin-bottom:4px}
.num-item span{font-size:14px;color:var(--text-2);line-height:1.7}

/* ---------- 演示 ---------- */
.demo-grid{display:grid;grid-template-columns:3fr 9fr;gap:40px}
.step-nav{position:sticky;top:110px;align-self:start;display:flex;flex-direction:column;gap:4px}
.step-nav a{
  display:flex;gap:14px;align-items:flex-start;
  padding:14px 0 14px 16px;border-left:3px solid transparent;
  color:var(--text-2);font-size:15px;transition:.2s ease-out;
}
.step-nav a .step-idx{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em;padding-top:2px}
.step-nav a:hover{color:var(--text-1);border-left-color:var(--line-brand)}
.step-nav a.is-current{color:var(--text-1);font-weight:600;border-left-color:var(--brand)}
.step-nav a.is-current .step-idx{color:var(--brand)}
.demo-flow{display:flex;flex-direction:column;gap:56px}
.demo-block{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:center}
.demo-block:nth-child(even) .demo-figure{order:2}
.demo-figure{
  border-radius:var(--r-lg);overflow:hidden;padding:12px;
}
.demo-figure img{width:100%;height:230px;object-fit:cover;border-radius:var(--r-md)}
.demo-text h3{font-size:20px;font-weight:600;margin-bottom:10px}
.demo-text p{font-size:15px;color:var(--text-2)}
.caption{font-size:12px;color:var(--text-3);margin-top:10px;letter-spacing:.04em}

/* ---------- 证据 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  background:var(--bg-2);
}
.stat-cell{padding:26px 24px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-value{font-size:30px;font-weight:700;color:var(--text-1);line-height:1.2}
.stat-value em{font-style:normal;font-size:15px;color:var(--brand);margin-left:4px}
.stat-label{font-size:13px;color:var(--text-3);margin-top:6px;letter-spacing:.06em}
.case-scroll{
  display:flex;gap:20px;margin-top:32px;overflow-x:auto;padding-bottom:12px;
  scrollbar-width:thin;
}
.case-scroll::-webkit-scrollbar{height:6px}
.case-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px}
.case-card{
  min-width:320px;width:320px;flex-shrink:0;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:.2s ease-out;
}
.case-card:hover{border-color:var(--line-brand);transform:translateY(-2px);box-shadow:var(--sh-2)}
.case-media{position:relative;height:176px;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-chip{
  position:absolute;left:14px;bottom:14px;font-size:12px;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(10,16,32,.72);border:1px solid var(--line);color:var(--text-1);
  backdrop-filter:blur(10px);
}
.case-body{padding:18px 20px 22px}
.case-body h4{font-size:17px;font-weight:600;margin-bottom:8px}
.case-body p{font-size:14px;color:var(--text-2)}
.case-result{margin-top:14px;font-size:13px;color:var(--accent);letter-spacing:.04em}
.quote-block{
  margin-top:36px;padding:32px;border-radius:var(--r-lg);
  background:var(--bg-2);border:1px solid var(--line);position:relative;
}
.quote-block::before{
  content:"“";position:absolute;top:6px;left:22px;
  font-size:64px;line-height:1;color:rgba(36,211,196,.28);font-family:Georgia,serif;
}
.quote-text{font-size:17px;line-height:1.9;color:var(--text-1);padding-left:44px}
.quote-meta{display:flex;align-items:center;gap:14px;margin-top:22px;padding-left:44px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(150deg,var(--brand),var(--violet));
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04141A;
}
.quote-name{font-size:15px;font-weight:600;color:var(--text-1)}
.quote-role{font-size:12px;color:var(--text-3)}
.tag-wall{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:.2s ease-out;color:var(--text-1);
}
.news-card:hover{border-color:var(--line-brand);transform:translateY(-2px);box-shadow:var(--sh-2);color:var(--text-1)}
.news-thumb{height:160px;overflow:hidden;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-badge{
  position:absolute;top:14px;left:14px;font-size:12px;letter-spacing:.06em;
  padding:4px 12px;border-radius:var(--r-pill);color:var(--text-1);
  background:rgba(10,16,32,.7);border:1px solid var(--line);
  backdrop-filter:blur(12px) saturate(140%);
}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-summary{
  margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:12px;
  border-top:1px solid var(--line);margin-top:20px;
}
.news-meta{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.news-arrow{margin-left:auto;color:var(--brand);transition:transform .18s ease-out}
.news-card:hover .news-arrow{transform:translateX(4px)}
.news-empty{
  min-height:220px;border-radius:var(--r-lg);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:14px;text-align:center;padding:32px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
}
.news-empty svg{width:36px;height:36px;color:var(--text-3)}
.news-empty p{color:var(--text-2);font-size:14px;margin:0}

/* ---------- 方案与价格 ---------- */
.plan-rows{display:flex;flex-direction:column;gap:16px}
.plan-row{
  position:relative;display:grid;grid-template-columns:1.2fr 2.2fr .9fr auto;
  gap:24px;align-items:center;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;transition:.2s ease-out;
}
.plan-row:hover{border-color:var(--line-brand);box-shadow:var(--sh-1)}
.plan-row.is-featured{border-color:var(--line-brand);box-shadow:0 0 0 1px rgba(36,211,196,.18),var(--sh-1)}
.plan-flag{
  position:absolute;top:-11px;right:24px;font-size:12px;letter-spacing:.06em;
  padding:3px 12px;border-radius:var(--r-pill);
  background:var(--accent-dim);border:1px solid rgba(255,179,92,.5);color:var(--accent);
}
.plan-name{font-size:19px;font-weight:600}
.plan-name small{display:block;font-size:12px;color:var(--text-3);font-weight:400;margin-top:4px;letter-spacing:.04em}
.plan-items{font-size:14px;color:var(--text-2);line-height:1.8}
.price{font-size:22px;font-weight:700;color:var(--text-1);white-space:nowrap}
.price small{font-size:12px;color:var(--text-3);font-weight:400;display:block;margin-top:2px}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px}
.faq-aside{position:sticky;top:110px;align-self:start}
.faq-aside .section-title{font-size:clamp(24px,2.6vw,32px)}
.faq-contact{
  margin-top:26px;padding:22px;border-radius:var(--r-lg);
  background:var(--bg-2);border:1px solid var(--line);
}
.faq-contact p{font-size:14px;color:var(--text-2);margin-bottom:14px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  border-radius:var(--r-md);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  transition:border-color .2s ease-out;
}
.faq-item.is-open{border-color:var(--line-brand)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:14px 24px 14px 24px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--brand)}
.faq-icon{
  margin-left:auto;font-size:20px;line-height:1;color:var(--brand);
  transition:transform .32s ease;flex-shrink:0;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .32s ease;
}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2);margin:0}

/* ---------- 联系表单 ---------- */
.contact-card{
  border-radius:var(--r-lg);padding:44px;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  display:grid;grid-template-columns:5fr 7fr;gap:48px;
}
.contact-info h2{font-size:clamp(24px,2.6vw,32px);line-height:1.3}
.contact-info p{margin-top:16px;font-size:15px;color:var(--text-2)}
.contact-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.contact-list li{display:flex;gap:12px;font-size:14px;color:var(--text-2);align-items:center}
.contact-list .ico{
  width:30px;height:30px;border-radius:var(--r-sm);flex-shrink:0;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);font-size:13px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:0 14px;height:48px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.field textarea{height:118px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(36,211,196,.18);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#FF7A6B}
.field .err{font-size:12px;color:#FF7A6B;display:none}
.field.has-error .err{display:block}
.check-row{grid-column:1 / -1;display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-2)}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);flex-shrink:0}
.form-note{grid-column:1 / -1;font-size:12px;color:var(--text-3)}
.form-success{
  grid-column:1 / -1;display:none;align-items:center;gap:10px;
  padding:12px 16px;border-radius:var(--r-sm);
  border:1px solid var(--line-brand);background:var(--brand-dim);
  font-size:14px;color:var(--brand);
}
.form-success.is-show{display:flex}

/* ---------- 页脚 ---------- */
.site-footer{background:#03060D;border-top:1px solid var(--line);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:34ch}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);font-size:13px;transition:.18s ease-out;
}
.social-btn:hover{border-color:var(--line-brand);color:var(--brand);background:var(--brand-dim)}
.footer-title{font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--text-1);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);margin-bottom:12px;align-items:flex-start}
.footer-contact .ico{color:var(--brand);flex-shrink:0;font-size:13px;padding-top:3px}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.footer-bottom .friend-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:65;
  display:inline-flex;align-items:center;gap:12px;
  padding:12px 20px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line-brand);
  backdrop-filter:blur(18px) saturate(140%);
  color:var(--text-1);font-size:14px;font-weight:600;
  box-shadow:var(--glow);
  opacity:0;transform:translateY(8px);pointer-events:none;
  transition:opacity .22s ease-out,transform .22s ease-out;
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta .mini{font-size:12px;color:var(--accent);font-weight:500}
.float-cta-mobile{display:none}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1320px}
}
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .fc-left{left:-14px}
  .fc-right{right:-10px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-links{display:none}
  .hamburger{display:inline-flex}
  .nav-badge{display:none}
  .hero{padding:64px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .browser-panel{max-width:560px;margin:0 auto}
  .fc-left{left:0}
  .fc-right{right:0}
  .bento-top{grid-template-columns:1fr}
  .demo-grid{grid-template-columns:1fr;gap:28px}
  .step-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:10px}
  .step-nav a{border-left:0;border-bottom:2px solid transparent;padding:8px 4px}
  .step-nav a.is-current{border-left:0;border-bottom-color:var(--brand)}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .news-grid{grid-template-columns:1fr 1fr}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .contact-card{grid-template-columns:1fr;padding:32px;gap:32px}
  .plan-row{grid-template-columns:1fr 1fr;gap:16px}
  .plan-row .price{text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .announce-text{display:none}
  .announce-inner{gap:10px}
  .hero{padding:52px 0 60px}
  .hero-metrics{gap:24px}
  .metric-value{font-size:22px}
  .demo-block{grid-template-columns:1fr}
  .demo-block:nth-child(even) .demo-figure{order:0}
  .stat-band{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line)}
  .stat-cell:last-child{border-bottom:0}
  .news-grid{grid-template-columns:1fr}
  .num-list{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .case-card{min-width:264px;width:264px}
  .float-cta{display:none}
  .float-cta-mobile{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:65;
    height:64px;padding:0 12px calc(0 + env(safe-area-inset-bottom));
    gap:10px;align-items:center;
    background:linear-gradient(160deg,rgba(10,16,32,.94),rgba(5,7,15,.96));
    border-top:1px solid var(--line);
    box-shadow:0 -12px 26px rgba(0,0,0,.45);
    opacity:0;transform:translateY(8px);pointer-events:none;
    transition:opacity .22s ease-out,transform .22s ease-out;
  }
  .float-cta-mobile.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
  .float-cta-mobile .icon-btn{
    width:56px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
    display:inline-flex;align-items:center;justify-content:center;color:var(--brand);
  }
  .float-cta-mobile .btn{flex:1}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .site-footer{padding:56px 0 88px}
  .quote-block{padding:24px}
  .quote-text{padding-left:0;margin-top:28px}
  .quote-meta{padding-left:0}
  .contact-card{padding:24px}
}
@media (max-width:519px){
  .hero h1{font-size:clamp(28px,8vw,34px)}
  .btn{padding:13px 20px;font-size:14px}
  .hero-cta .btn{flex:1 1 100%}
  .plan-row{grid-template-columns:1fr}
  .browser-body img{height:210px}
  .fc-left,.fc-right{position:static;animation:none;margin-top:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(36,211,196,.38);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 620px at 6% -8%,rgba(36,211,196,.10),transparent 62%),
    radial-gradient(760px 520px at 102% 104%,rgba(255,179,92,.05),transparent 66%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out}
a:hover{color:var(--brand-strong)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 18px;max-width:76ch;text-align:left}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.num,.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--glass);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.header-inner{
  display:flex;align-items:center;gap:28px;height:72px;
  max-width:1240px;margin:0 auto;padding:0 24px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);flex:0 0 auto}
.brand:hover{color:var(--text-1)}
.logo-mark{flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:17px;font-weight:700;letter-spacing:.01em}
.logo-sub{font-family:var(--font-num);font-size:10px;letter-spacing:.24em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:12px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-13px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:999px;background:var(--brand);
}
.nav-links a.is-active::after{transform:scaleX(1)}
.header-side{margin-left:auto;display:flex;align-items:center;gap:14px}
.badge-live{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;letter-spacing:.06em;color:var(--accent);
  border:1px solid rgba(255,179,92,.38);border-radius:999px;
  padding:6px 13px;white-space:nowrap;
}
.pulse-dot{width:6px;height:6px;border-radius:999px;background:var(--accent);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,179,92,.6)}70%{box-shadow:0 0 0 7px rgba(255,179,92,0)}100%{box-shadow:0 0 0 0 rgba(255,179,92,0)}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);font-weight:700;font-size:15px;
  padding:14px 26px;border:1px solid transparent;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:0 0 0 1px rgba(36,211,196,.30),0 8px 24px rgba(36,211,196,.20)}
.btn-primary:hover{background:var(--brand-strong);color:#04141A;transform:translateY(-1px);box-shadow:0 10px 36px rgba(36,211,196,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(36,211,196,.4),0 4px 14px rgba(36,211,196,.22)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-dim);color:var(--text-1);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:15px;font-weight:600;padding:4px 0}
.btn-text .arw{transition:transform .18s ease-out}
.btn-text:hover .arw{transform:translateX(4px)}
.btn-text:hover{color:var(--brand-strong);text-decoration:underline;text-underline-offset:4px}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .24s ease,opacity .24s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:linear-gradient(160deg,rgba(10,16,32,.96),rgba(5,7,15,.98));
  backdrop-filter:blur(18px) saturate(140%);
  padding:32px 24px 40px;
  transform:translateY(-14px);opacity:0;visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
  display:flex;flex-direction:column;gap:4px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.nav-drawer a{
  font-size:20px;font-weight:600;color:var(--text-2);
  padding:14px 4px;border-bottom:1px solid var(--line);
}
.nav-drawer a.is-active{color:var(--brand)}
.nav-drawer .drawer-foot{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.nav-drawer .drawer-tel{font-family:var(--font-num);font-size:15px;color:var(--text-2);letter-spacing:.04em}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  opacity:.34;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.6) 58%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 0%,rgba(0,0,0,.6) 58%,transparent 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,15,.62),rgba(5,7,15,.94));
}
.hero-inner{position:relative;z-index:2;padding:44px 24px 88px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);margin-bottom:36px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .now{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;color:var(--brand);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.page-hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.14;letter-spacing:-.01em;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--text-2);max-width:34ch;margin-bottom:24px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.pill{
  font-size:13px;color:var(--text-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;
  background:rgba(255,255,255,.02);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-art{
  position:relative;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:26px;min-height:260px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.hero-art::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.hero-art .art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%}
.art-cell{height:54px;border:1px solid var(--line);border-radius:var(--r-md);background:rgba(255,255,255,.02)}
.art-cell.hi{border-color:var(--line-strong);background:var(--brand-dim)}
.art-cell.warm{border-color:rgba(255,179,92,.35);background:rgba(255,179,92,.08)}
.art-note{
  position:absolute;right:22px;bottom:22px;font-size:12px;color:var(--text-3);
  letter-spacing:.06em;font-family:var(--font-num);
}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:32px;max-width:720px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.25;margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px}

/* ---------- layout with side nav ---------- */
.page-layout{display:grid;grid-template-columns:236px 1fr;gap:56px;align-items:start}
.side-nav{
  position:sticky;top:96px;
  display:flex;flex-direction:column;gap:2px;
  border-left:1px solid var(--line);padding-left:0;
}
.side-nav .side-title{
  font-size:12px;letter-spacing:.18em;color:var(--text-3);
  padding:0 0 12px 18px;
}
.side-nav a{
  position:relative;font-size:14px;font-weight:500;color:var(--text-2);
  padding:11px 16px;
  border-left:3px solid transparent;
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;
}
.side-nav a:hover{color:var(--text-1);background:rgba(255,255,255,.03)}
.side-nav a.is-current{color:var(--text-1);border-left-color:var(--brand);background:var(--brand-dim);font-weight:600}
.side-nav a .idx{font-family:var(--font-num);font-size:12px;color:var(--brand);margin-right:8px}
.content-flow{display:flex;flex-direction:column;gap:72px;min-width:0}
.flow-block{scroll-margin-top:104px}
.flow-block > .block-head{margin-bottom:28px}
.flow-block h2{font-size:clamp(24px,2.4vw,32px);line-height:1.28;margin-bottom:12px}
.flow-block .lead{color:var(--text-2);font-size:15.5px;max-width:70ch}
.flow-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:28px}

/* ---------- capability grid ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cap-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.cap-card:hover{transform:translateY(-2px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.cap-media{position:relative;aspect-ratio:16/10;background:var(--bg-1);overflow:hidden}
.cap-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.cap-card:hover .cap-media img{transform:scale(1.04)}
.cap-media::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:linear-gradient(90deg,rgba(255,255,255,.05) 0%,rgba(255,255,255,.01) 40%,rgba(255,255,255,.05) 80%);
  background-size:200% 100%;
  animation:shimmer 1.2s linear infinite;
  pointer-events:none;
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.cap-media img{position:relative;z-index:1}
.cap-body{padding:22px 24px 26px}
.cap-body h3{font-size:19px;line-height:1.45;margin-bottom:10px}
.cap-body p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0}
.cap-tag{
  display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--brand);
  border:1px solid rgba(36,211,196,.3);border-radius:999px;
  padding:4px 12px;margin-bottom:14px;background:var(--brand-dim);
}

/* ---------- process timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px;padding-top:26px}
.timeline::before{
  content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--line);
}
.step{position:relative;padding-top:26px}
.step::before{
  content:"";position:absolute;left:0;top:0;width:11px;height:11px;border-radius:999px;
  background:var(--accent);box-shadow:0 0 0 4px rgba(255,179,92,.14);
}
.step .step-no{font-family:var(--font-num);font-size:12px;letter-spacing:.14em;color:var(--text-3);display:block;margin-bottom:8px}
.step h4{font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.5}
.step p{font-size:13.5px;line-height:1.75;color:var(--text-2);margin:0}

/* ---------- deliverables ---------- */
.deliver-wrap{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 32px;box-shadow:var(--shadow);
}
.deliver-list{display:grid;grid-template-columns:repeat(2,1fr);gap:6px 32px}
.deliver-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text-2);line-height:1.7;
}
.deliver-list li:nth-last-child(-n+2){border-bottom:0}
.chk{
  flex:0 0 auto;width:20px;height:20px;border-radius:999px;margin-top:4px;
  border:1px solid var(--line-strong);background:var(--brand-dim);
  display:flex;align-items:center;justify-content:center;
}
.chk svg{width:11px;height:11px}
.deliver-list strong{color:var(--text-1);font-weight:600}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:10px}
.faq-item{
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease-out,background-color .2s ease-out;
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:inset 3px 0 0 var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 24px;font-size:17px;font-weight:600;color:var(--text-1);text-align:left;
  line-height:1.5;
}
.faq-q:hover{color:var(--brand)}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .32s ease;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:13px;height:1.6px}
.faq-ico::after{width:1.6px;height:13px}
.faq-item.is-open .faq-ico{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{
  margin:0;padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--text-2);
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);border-radius:var(--r-lg);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
}
.cta-band h3{font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin-bottom:10px;font-weight:700}
.cta-band p{color:var(--text-2);font-size:15px;margin:0;max-width:56ch}
.cta-band .btn{flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{
  background:#03060D;border-top:1px solid var(--line);
  padding:72px 0 32px;position:relative;z-index:1;margin-top:96px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:34ch;margin-bottom:20px}
.social-row{display:flex;gap:10px}
.social-btn{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--text-2);
}
.social-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-dim)}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.footer-contact .ico{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;margin-top:4px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--brand);
}
.footer-contact .num{font-family:var(--font-num);letter-spacing:.03em}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.friend-links{display:flex;gap:20px;flex-wrap:wrap}
.friend-links a{color:var(--text-3);font-size:13px}
.friend-links a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container,.header-inner{max-width:1320px}
}
@media (max-width:1279px){
  .hero-grid{gap:36px}
  .page-layout{grid-template-columns:212px 1fr;gap:40px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .badge-live{display:none}
  .header-side{gap:10px}
  .section{padding:72px 0}
  .page-hero .hero-inner{padding:36px 24px 72px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-art{min-height:200px;order:2}
  .hero-sub{max-width:none}
  .page-layout{grid-template-columns:1fr;gap:32px}
  .side-nav{
    position:static;flex-direction:row;gap:8px;overflow-x:auto;
    border-left:0;border-bottom:1px solid var(--line);padding-bottom:10px;
    -webkit-overflow-scrolling:touch;
  }
  .side-nav .side-title{display:none}
  .side-nav a{
    white-space:nowrap;border-left:0;border-bottom:2px solid transparent;
    border-radius:var(--r-sm);padding:9px 14px;background:rgba(255,255,255,.02);
  }
  .side-nav a.is-current{border-bottom-color:var(--brand);border-left-color:transparent}
  .content-flow{gap:56px}
  .timeline{grid-template-columns:repeat(2,1fr);gap:24px 20px}
  .timeline::before{display:none}
  .step{padding-top:22px}
  .cap-grid{grid-template-columns:1fr}
  .deliver-list{grid-template-columns:1fr}
  .deliver-list li:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .deliver-list li:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
  .cta-band{padding:30px 26px}
}
@media (max-width:767px){
  .container,.header-inner{padding:0 20px}
  .hero-inner{padding:32px 20px 60px}
  .section{padding:56px 0}
  .page-hero h1{font-size:clamp(30px,8vw,42px)}
  .cta-band{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-band .btn{width:100%}
  .hero-actions{width:100%}
  .hero-actions .btn{width:100%}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px}
  .deliver-wrap{padding:22px 20px}
  .footer-grid{grid-template-columns:1fr;gap:34px}
  .footer-brand{order:2}
  .footer-grid > div:last-child{order:1}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .site-footer{margin-top:64px;padding:56px 0 28px}
}
@media (max-width:519px){
  .timeline{grid-template-columns:1fr}
  .hero-art{padding:18px}
  .hero-art .art-grid{grid-template-columns:repeat(2,1fr)}
  .page-layout{gap:24px}
}

/* roulang page: article */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --text-body:#D3DEEB;
  --line:rgba(255,255,255,.09);
  --line-brand:rgba(36,211,196,.38);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.35);
  --shadow-hover:0 18px 44px rgba(0,0,0,.45);
  --shadow-glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --nav-h:72px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 8% -8%, rgba(36,211,196,.10), transparent 68%),
    radial-gradient(760px 520px at 102% 104%, rgba(255,179,92,.05), transparent 70%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:48px 48px;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-strong)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:2}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.site-header.is-scrolled{border-bottom-color:var(--line-brand);box-shadow:0 10px 30px rgba(0,0,0,.45)}
.nav-wrap{
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  transition:height .2s ease-out;
}
.site-header.is-scrolled .nav-wrap{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);text-decoration:none}
.brand:hover{color:var(--text-1)}
.logo-mark{width:28px;height:28px;flex:0 0 28px}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-name{font-size:19px;font-weight:700;letter-spacing:-.01em;color:var(--text-1)}
.logo-sub{font-family:var(--font-num);font-size:10px;letter-spacing:.22em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 0;
  transition:color .18s ease-out;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::before{
  content:"";
  position:absolute;
  left:-12px;
  top:50%;
  width:4px;
  height:4px;
  margin-top:-2px;
  border-radius:999px;
  background:var(--brand);
}
.nav-actions{display:flex;align-items:center;gap:14px}
.badge-live{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border:1px solid rgba(255,179,92,.5);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
  white-space:nowrap;
}
.badge-live .dot{width:6px;height:6px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 4px rgba(255,179,92,.14)}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1;
  cursor:pointer;
  text-decoration:none;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:var(--shadow-glow)}
.btn-primary:hover{color:#04141A;filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(36,211,196,.42),0 10px 36px rgba(36,211,196,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(36,211,196,.42),0 6px 18px rgba(36,211,196,.3)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-dim);color:var(--text-1)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  cursor:pointer;
  position:relative;
}
.nav-toggle span{
  position:absolute;
  left:12px;
  width:20px;
  height:2px;
  background:var(--text-1);
  border-radius:2px;
  transition:transform .24s ease-out,opacity .24s ease-out;
}
.nav-toggle span:nth-child(1){top:16px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:26px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(5,7,15,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:96px 24px 40px;
  transform:translateY(100%);
  opacity:0;
  visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer a.drawer-link{
  display:block;
  font-size:20px;
  font-weight:600;
  color:var(--text-1);
  padding:16px 0;
  border-bottom:1px solid var(--line);
}
.drawer-foot{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.drawer-close{
  position:absolute;
  top:22px;
  right:24px;
  width:44px;
  height:44px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-1);
  font-size:20px;
  cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  position:relative;
  z-index:2;
  padding:26px 0 0;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--text-3);
}
.crumb-bar ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb-bar li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb-bar li+li::before{content:"/";color:var(--text-3)}
.crumb-bar a{color:var(--text-3)}
.crumb-bar a:hover{color:var(--brand)}
.crumb-bar .current{color:var(--text-2);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-head{position:relative;z-index:2;padding:28px 0 0}
.head-inner{max-width:860px;display:flex;flex-direction:column;gap:18px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  align-self:flex-start;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--brand);
}
.chip.is-warm{color:var(--accent);border-color:rgba(255,179,92,.42)}
.article-head h1{
  font-size:clamp(30px,4vw,44px);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.01em;
  color:var(--text-1);
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.05em;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.meta-row .sep{color:rgba(255,255,255,.16)}
.meta-row .num{font-family:var(--font-num);color:var(--text-2)}
.head-rule{height:1px;background:var(--line);margin:28px 0 0}

/* ---------- 文章布局 ---------- */
.article-main{position:relative;z-index:2;padding:40px 0 96px}
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
.article-body{max-width:780px;min-width:0}
.article-body > *:first-child{margin-top:0}
.article-body p{font-size:17px;line-height:1.9;color:var(--text-body);margin:0 0 18px}
.article-body h2{
  position:relative;
  font-size:24px;
  font-weight:700;
  line-height:1.4;
  color:var(--text-1);
  margin:40px 0 18px;
  padding-left:15px;
  border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--text-1);margin:30px 0 14px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text-1);margin:24px 0 12px}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:2px}
.article-body li{position:relative;padding-left:22px;margin:8px 0;font-size:17px;line-height:1.9;color:var(--text-body)}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.85em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--brand);
  opacity:.85;
}
.article-body ol{counter-reset:olc}
.article-body ol li{counter-increment:olc}
.article-body ol li::before{
  content:counter(olc);
  position:absolute;
  left:0;
  top:.1em;
  font-family:var(--font-num);
  font-size:13px;
  color:var(--brand);
  font-weight:700;
}
.article-body blockquote{
  margin:24px 0;
  padding:20px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  color:var(--text-2);
  font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:24px 0 10px;width:100%;object-fit:cover}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden}
.article-body th{background:var(--bg-1);color:var(--text-1);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body tr:last-child td{border-bottom:none}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:12px;color:var(--text-3);margin-top:8px;letter-spacing:.04em}
.article-body code{
  font-family:var(--font-num);
  font-size:14px;
  background:rgba(36,211,196,.12);
  color:var(--brand-strong);
  padding:2px 6px;
  border-radius:6px;
}
.article-body pre{
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:18px;
  overflow-x:auto;
  margin:20px 0;
}
.article-body pre code{background:none;color:var(--text-2);padding:0}

/* 空态 */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  min-height:260px;
  padding:40px 24px;
  text-align:center;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.empty-state svg{width:36px;height:36px;color:var(--brand)}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- 侧栏 ---------- */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  box-shadow:var(--shadow-card);
}
.side-title{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto}
.toc-link{
  display:block;
  padding:8px 10px;
  border-left:3px solid transparent;
  border-radius:0 8px 8px 0;
  font-size:14px;
  line-height:1.6;
  color:var(--text-2);
  transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out;
}
.toc-link:hover{color:var(--text-1);background:var(--brand-dim)}
.toc-link.lv3{padding-left:24px;font-size:13px;color:var(--text-3)}
.toc-link.is-current{color:var(--brand-strong);border-left-color:var(--brand);background:var(--brand-dim)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;
  align-items:center;
  padding:6px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--text-2);
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.tag:hover{color:var(--brand-strong);border-color:var(--line-brand);background:var(--brand-dim)}
.side-cta{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.side-cta h3{font-size:19px;font-weight:700;line-height:1.45;color:var(--text-1);margin-bottom:10px}
.side-cta p{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:18px}
.side-note{font-size:12px;color:var(--text-3);margin-top:12px;letter-spacing:.04em}

/* ---------- 文末 ---------- */
.article-foot{max-width:780px;margin-top:48px}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row .label{font-size:12px;letter-spacing:.14em;color:var(--text-3)}
.share-row{display:flex;align-items:center;gap:10px;margin-top:22px}
.share-row .label{font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-right:4px}
.share-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:13px;
  color:var(--text-2);
  cursor:pointer;
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.share-btn:hover{color:var(--brand-strong);border-color:var(--line-brand);transform:translateY(-2px)}
.nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.nav-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px;
  border-radius:var(--radius-lg);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.nav-card:hover{transform:translateY(-2px);border-color:var(--line-brand);box-shadow:var(--shadow-hover)}
.nav-card .dir{font-size:12px;letter-spacing:.14em;color:var(--text-3)}
.nav-card .t{font-size:16px;font-weight:600;line-height:1.6;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nav-card.next{align-items:flex-end;text-align:right}
.back-link{display:inline-flex;align-items:center;gap:8px;margin-top:30px;font-size:15px;font-weight:600;color:var(--brand)}
.back-link .arw{transition:transform .18s ease-out}
.back-link:hover .arw{transform:translateX(-4px)}

/* ---------- 相关推荐 ---------- */
.related{padding:96px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.eyebrow{
  display:block;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--brand);
  margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;color:var(--text-1)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.text-link .arw{transition:transform .18s ease-out}
.text-link:hover .arw{transform:translateX(4px)}
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-2px);border-color:var(--line-brand);box-shadow:var(--shadow-hover)}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.news-card:hover .thumb img{transform:scale(1.04)}
.news-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card .badge{
  align-self:flex-start;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  font-size:12px;
  letter-spacing:.06em;
  color:var(--brand);
}
.news-card h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.news-card .foot .arw{color:var(--brand);transition:transform .2s ease-out}
.news-card:hover .foot .arw{transform:translateX(4px)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:12px;
  padding:12px 20px;
  border-radius:999px;
  border:1px solid var(--line-brand);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.03));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-glow);
  font-size:14px;
  font-weight:600;
  color:var(--text-1);
  opacity:0;
  transform:translateY(8px);
  pointer-events:none;
  transition:opacity .22s ease-out,transform .22s ease-out;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{color:var(--text-1)}
.pulse{width:8px;height:8px;border-radius:999px;background:var(--brand);box-shadow:0 0 0 0 rgba(36,211,196,.5);animation:pulse 2.4s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(36,211,196,.45)}
  70%{box-shadow:0 0 0 10px rgba(36,211,196,0)}
  100%{box-shadow:0 0 0 0 rgba(36,211,196,0)}
}
.float-cta .mini{font-family:var(--font-num);font-size:12px;color:var(--accent)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:2;
  margin-top:96px;
  background:#03060D;
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:38px;
  height:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:13px;
  color:var(--text-2);
  transition:color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.social-btn:hover{color:var(--brand-strong);border-color:var(--line-brand);transform:translateY(-2px)}
.footer-title{font-size:13px;letter-spacing:.16em;color:var(--text-3);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand-strong)}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.7;color:var(--text-2)}
.footer-contact .ico{
  flex:0 0 22px;
  width:22px;
  height:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:6px;
  border:1px solid var(--line);
  font-size:11px;
  color:var(--brand);
}
.footer-contact .num{font-family:var(--font-num);color:var(--text-1);letter-spacing:.04em}
.footer-bottom{
  margin-top:56px;
  padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-size:13px;
  color:var(--text-3);
}
.friend-links{display:flex;flex-wrap:wrap;gap:18px}
.friend-links a{font-size:13px;color:var(--text-3)}
.friend-links a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1320px}
}
@media (max-width:1279px){
  .article-layout{gap:36px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .badge-live{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;order:2;margin-top:8px}
  .article-body,.article-foot{max-width:none}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
  .related{padding-top:72px}
  .article-main{padding-bottom:72px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-head h1{font-size:clamp(26px,7vw,34px)}
  .nav-cards{grid-template-columns:1fr}
  .nav-card.next{align-items:flex-start;text-align:left}
  .news-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .site-footer{padding:56px 0 28px;margin-top:56px}
  .section-head{flex-direction:column;align-items:flex-start}
  .float-cta{
    right:16px;
    left:16px;
    bottom:calc(16px + env(safe-area-inset-bottom,0px));
    justify-content:center;
    padding:14px 18px;
  }
  .related{padding-top:56px}
  .article-main{padding:32px 0 64px}
}
@media (max-width:520px){
  .logo-name{font-size:17px}
  .article-body p,.article-body li{font-size:16px}
  .crumb-bar .current{max-width:180px}
  .side-card{padding:18px}
}

/* roulang page: category2 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --line:rgba(255,255,255,.09);
  --line-brand:rgba(36,211,196,.38);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow-1:0 12px 32px rgba(0,0,0,.35);
  --shadow-2:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --font-num:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    linear-gradient(to right,rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.035) 1px,transparent 1px),
    radial-gradient(900px 620px at 8% -6%,rgba(36,211,196,.10),transparent 62%),
    radial-gradient(760px 560px at 100% 92%,rgba(255,179,92,.05),transparent 60%);
  background-size:48px 48px,48px 48px,auto,auto;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  background-attachment:fixed;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--brand-strong)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1320px}}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.01em;
  transition:all 180ms ease-out;white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:0 8px 30px rgba(36,211,196,.28)}
.btn-primary:hover{background:var(--brand-strong);color:#04141A;transform:translateY(-1px);box-shadow:0 10px 36px rgba(36,211,196,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 16px rgba(36,211,196,.3)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-dim);color:var(--text-1)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow span{transition:transform 180ms ease-out}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--glass);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:box-shadow 220ms ease-out,border-color 220ms ease-out;
}
.site-header.is-scrolled{border-bottom-color:rgba(36,211,196,.28);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height 220ms ease-out}
.site-header.is-scrolled .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:10px;color:var(--text-1)}
.logo:hover{color:var(--text-1)}
.logo-mark{display:inline-flex;width:28px;height:28px;flex:0 0 28px}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-name{font-size:17px;font-weight:700;letter-spacing:.02em}
.logo-sub{font-size:10px;letter-spacing:.22em;color:var(--text-3)}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform 220ms ease-out;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active::before{
  content:"";position:absolute;left:-12px;top:50%;width:4px;height:4px;border-radius:var(--r-pill);
  background:var(--brand);transform:translateY(-50%);
}
.nav-side{display:flex;align-items:center;gap:12px}
.nav-badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,179,92,.5);color:var(--accent);
  font-size:12px;letter-spacing:.04em;font-variant-numeric:tabular-nums;
}
.nav-badge::before{content:"";width:6px;height:6px;border-radius:var(--r-pill);background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform 200ms ease-out,opacity 200ms ease-out}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{
  position:fixed;inset:0;z-index:70;padding:96px 24px 40px;
  background:linear-gradient(180deg,rgba(5,7,15,.97),rgba(10,16,32,.98));
  backdrop-filter:blur(18px);
  transform:translateY(-100%);opacity:0;pointer-events:none;
  transition:transform 240ms ease-out,opacity 240ms ease-out;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{font-size:20px;font-weight:600;color:var(--text-1);padding:14px 0;border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.drawer-phone{font-family:var(--font-num);font-size:20px;color:var(--text-1);letter-spacing:.02em}

/* ---------- 页面 Hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:56px 0 72px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.26;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.95),transparent 90%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.95),transparent 90%);
}
.page-hero-inner{position:relative;display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:center}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{color:var(--text-2)}
.page-hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.14;font-weight:700;letter-spacing:-.01em;margin-bottom:18px}
.page-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:34ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);position:relative}
.hero-facts::before{content:"";position:absolute;top:-1px;left:0;width:88px;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent))}
.hero-fact-num{font-family:var(--font-num);font-size:22px;font-weight:600;color:var(--text-1);font-variant-numeric:tabular-nums}
.hero-fact-label{font-size:13px;color:var(--text-3)}
.hero-art{position:relative;display:flex;align-items:center;justify-content:center}
.hero-art svg{width:100%;max-width:380px;height:auto}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0}
.section.alt{background:rgba(10,16,32,.72);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--brand);margin-bottom:12px;font-variant-numeric:tabular-nums}
.section h2{font-size:clamp(26px,3vw,38px);line-height:1.25;font-weight:700;margin-bottom:16px}
.section-head{max-width:72ch;margin-bottom:32px}
.section-head p{color:var(--text-2);font-size:15.5px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 筛选标签 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.chip{
  display:inline-flex;align-items:center;padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--bg-2);color:var(--text-2);
  font-size:13.5px;letter-spacing:.02em;transition:all 180ms ease-out;
}
.chip:hover{border-color:var(--line-brand);color:var(--text-1)}
.chip.is-on{background:var(--brand);border-color:var(--brand);color:#04141A;font-weight:700}

/* ---------- 案例错落卡片 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;padding-top:40px}
.case-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  transition:transform 220ms ease-out,border-color 220ms ease-out,box-shadow 220ms ease-out;
}
.case-card:nth-child(odd){transform:translateY(-40px)}
.case-card:hover{border-color:var(--line-brand);box-shadow:var(--shadow-2);transform:translateY(-4px)}
.case-card:nth-child(odd):hover{transform:translateY(-44px)}
.case-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(180deg,#0d1526,#0a1020)}
.case-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.05) 50%,transparent 70%);
  animation:shimmer 1.2s linear infinite;
}
@keyframes shimmer{0%{transform:translateX(-60%)}100%{transform:translateX(60%)}}
.case-media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transition:transform 420ms ease-out}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-tag{
  position:absolute;z-index:2;left:16px;top:16px;padding:5px 12px;border-radius:var(--r-pill);
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(14px);
  font-size:12px;letter-spacing:.06em;color:var(--text-1);
}
.case-metric{
  position:absolute;z-index:2;left:16px;bottom:16px;display:flex;align-items:baseline;gap:8px;
  padding:10px 16px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(5,7,15,.78),rgba(5,7,15,.58));
  border:1px solid rgba(36,211,196,.3);backdrop-filter:blur(14px);
  font-size:12.5px;color:var(--text-2);
}
.case-metric em{font-family:var(--font-num);font-style:normal;font-size:19px;font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums}
.case-body{padding:24px 26px 28px}
.case-body h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px}
.case-body p{font-size:14px;line-height:1.75;color:var(--text-2)}
.case-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.case-foot span{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 制作流程档位条 ---------- */
.flow-list{display:flex;flex-direction:column;gap:12px}
.flow-row{
  display:grid;grid-template-columns:60px 1.05fr 1.5fr auto;gap:22px;align-items:center;
  padding:22px 26px;border:1px solid var(--line);border-radius:16px;background:var(--bg-2);
  transition:transform 200ms ease-out,border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.flow-row:hover{border-color:var(--line-brand);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.flow-num{font-family:var(--font-num);font-size:16px;font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums}
.flow-title{font-size:18px;font-weight:600}
.flow-desc{font-size:14px;line-height:1.75;color:var(--text-2)}
.flow-time{
  font-family:var(--font-num);font-size:13.5px;color:var(--accent);
  padding:6px 14px;border:1px solid rgba(255,179,92,.34);border-radius:var(--r-pill);
  white-space:nowrap;font-variant-numeric:tabular-nums;
}

/* ---------- 数据条 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.stat-item{background:var(--bg-1);padding:30px 24px}
.stat-num{font-family:var(--font-num);font-size:34px;font-weight:600;line-height:1.1;color:var(--text-1);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat-num em{font-style:normal;color:var(--brand)}
.stat-label{margin-top:10px;font-size:13.5px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start}
.faq-aside p{font-size:14.5px;color:var(--text-2);margin-top:8px}
.faq-mini{
  margin-top:26px;padding:22px;border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
}
.faq-mini h4{font-size:16px;font-weight:600;margin-bottom:8px}
.faq-mini p{font-size:13.5px;color:var(--text-2);line-height:1.75}
.faq-mini .link-arrow{margin-top:14px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;transition:border-color 200ms ease-out;
}
.faq-item:hover{border-color:var(--line-brand)}
.faq-item.is-open{border-color:var(--line-brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 24px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-1);
}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--brand)}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform 320ms ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:13px;height:2px}
.faq-icon::after{width:2px;height:13px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms ease}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:320px}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--line-brand);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  padding:48px;display:grid;grid-template-columns:1.4fr .6fr;gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.85;
}
.cta-band h2{margin-bottom:14px}
.cta-band p{font-size:15.5px;color:var(--text-2);max-width:62ch}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
.cta-note{font-size:12.5px;color:var(--text-3);text-align:center;font-variant-numeric:tabular-nums}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#03060D;border-top:1px solid var(--line);
  padding:72px 0 32px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:34ch}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:36px;height:36px;border-radius:var(--r-pill);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--text-2);transition:all 180ms ease-out;
}
.social-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-dim)}
.footer-title{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.6}
.footer-contact .ico{
  flex:0 0 22px;width:22px;height:22px;border-radius:var(--r-pill);
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--brand);
}
.footer-contact .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--text-3);
}
.friend-links{display:flex;flex-wrap:wrap;gap:18px}
.friend-links a{font-size:13px;color:var(--text-3)}
.friend-links a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .case-grid{gap:26px}
  .flow-row{grid-template-columns:50px 1fr 1.4fr auto;gap:18px}
}
@media (max-width:1023px){
  .nav-links,.nav-badge{display:none}
  .hamburger{display:flex}
  .nav-side{margin-left:auto}
  .page-hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-art{order:-1;justify-content:flex-start}
  .hero-art svg{max-width:280px}
  .page-lead{max-width:60ch}
  .flow-row{grid-template-columns:44px 1fr;row-gap:10px;padding:20px}
  .flow-desc{grid-column:2}
  .flow-time{grid-column:2;justify-self:start}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .page-hero{padding:40px 0 56px}
  .case-grid{grid-template-columns:1fr;padding-top:0;gap:22px}
  .case-card:nth-child(odd){transform:none}
  .case-card:nth-child(odd):hover{transform:translateY(-4px)}
  .case-body{padding:20px}
  .hero-facts{gap:20px}
  .stat-item{padding:24px 20px}
  .stat-num{font-size:28px}
  .cta-band{padding:28px 22px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-contact{order:-1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .page-hero h1{font-size:32px}
  .section h2{font-size:24px}
  .faq-q{font-size:15.5px;padding:14px 18px}
  .faq-a p{padding:0 18px 18px}
  .flow-time{font-size:12.5px}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --line:rgba(255,255,255,.09);
  --line-brand:rgba(36,211,196,.38);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px rgba(0,0,0,.35);
  --shadow-2:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background-color:var(--bg-0);
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(900px 900px at 8% -6%,rgba(36,211,196,.10),transparent 62%),
    radial-gradient(760px 760px at 100% 108%,rgba(255,179,92,.05),transparent 64%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--brand-strong)}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(36,211,196,.28);color:#fff}
.container{max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1.2;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.22)}
.btn-primary:hover{background:var(--brand-strong);color:#04141A;transform:translateY(-1px);box-shadow:0 10px 36px rgba(36,211,196,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(36,211,196,.42),0 4px 16px rgba(36,211,196,.26)}
.btn-ghost{border:1px solid var(--line);color:var(--text-1);background:transparent}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-dim);color:var(--text-1);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:13px;border-radius:10px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);border-bottom:1px solid transparent;transition:border-color .18s ease-out}
.text-link:hover{border-bottom-color:var(--brand)}
.text-link .arw{transition:transform .18s ease-out}
.text-link:hover .arw{transform:translateX(4px)}

/* ============ 头部 ============ */
.site-header{position:relative;z-index:60}
.announce{
  background:linear-gradient(90deg,rgba(36,211,196,.16),rgba(255,179,92,.10));
  border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:.04em;
}
.announce-inner{
  max-width:1240px;margin:0 auto;padding:7px 24px;
  display:flex;align-items:center;justify-content:center;gap:14px;
  min-height:32px;color:var(--text-2);
}
.announce-left{display:inline-flex;align-items:center;gap:8px}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 rgba(36,211,196,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(36,211,196,.55)}70%{box-shadow:0 0 0 9px rgba(36,211,196,0)}100%{box-shadow:0 0 0 0 rgba(36,211,196,0)}}
.a-tag{color:var(--brand);border:1px solid var(--line-brand);border-radius:var(--radius-pill);padding:1px 10px;font-size:11px}
.announce-mid b{color:var(--accent);font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.06em;font-size:13px}
.announce-close{margin-left:6px;color:var(--text-3);font-size:16px;line-height:1;padding:2px 6px;border-radius:6px;transition:color .18s ease-out}
.announce-close:hover{color:var(--text-1)}

.nav-bar{
  position:sticky;top:0;z-index:70;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease-out,padding .24s ease-out;
}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .24s ease-out}
.nav-bar.is-scrolled{box-shadow:0 1px 0 0 rgba(36,211,196,.55),0 14px 34px rgba(0,0,0,.45)}
.nav-bar.is-scrolled .nav-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);flex:none}
.logo:hover{color:var(--text-1)}
.logo-mark{width:28px;height:28px;flex:none}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:17px;font-weight:700;letter-spacing:.01em}
.logo-sub{font-size:10px;letter-spacing:.24em;color:var(--text-3);font-family:var(--font-num)}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;display:inline-flex;align-items:center;gap:7px;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease-out;
}
.nav-links a:hover{color:var(--text-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--text-1);font-weight:600}
.nav-links a.is-active::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);flex:none}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px;flex:none}
.badge-live{
  font-size:12px;color:var(--accent);border:1px solid rgba(255,179,92,.45);
  border-radius:var(--radius-pill);padding:4px 12px;white-space:nowrap;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .22s ease-out,opacity .22s ease-out}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.is-open span:nth-child(2){opacity:0}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:0;z-index:65;
  background:linear-gradient(160deg,rgba(10,16,32,.97),rgba(5,7,15,.99));
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:104px 24px 40px;
  display:flex;flex-direction:column;gap:8px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  font-size:20px;font-weight:600;color:var(--text-1);padding:16px 4px;
  border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;
}
.drawer-links a.is-active{color:var(--brand)}
.drawer-links a.is-active::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;padding-top:24px}
.drawer-tel{text-align:center;font-family:var(--font-num);font-size:18px;color:var(--text-2);letter-spacing:.04em}

/* ============ 小 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 76px;
  background-image:linear-gradient(180deg,rgba(5,7,15,.78),rgba(5,7,15,.95)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  -webkit-mask-image:linear-gradient(180deg,#000 72%,transparent 100%);
  mask-image:linear-gradient(180deg,#000 72%,transparent 100%);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  opacity:.75;
}
.breadcrumb{font-size:12px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:26px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.18)}
.breadcrumb .cur{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;
  color:var(--brand);text-transform:uppercase;margin-bottom:18px;font-family:var(--font-num);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.hero-grid h1{font-size:clamp(34px,5.2vw,56px);font-weight:700;line-height:1.14;letter-spacing:-.01em;max-width:16ch}
.hero-lead{margin-top:20px;font-size:17px;color:var(--text-2);max-width:34ch}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  font-size:12px;letter-spacing:.06em;color:var(--text-2);
  border:1px solid var(--line);background:var(--bg-2);
  border-radius:var(--radius-pill);padding:6px 14px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-deco{
  position:relative;height:280px;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;display:flex;align-items:center;justify-content:center;
}
.hero-deco svg{width:82%;height:auto;max-height:210px}
.hero-deco::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--accent));opacity:.85;
}
.deco-tag{
  position:absolute;top:16px;left:18px;font-size:11px;letter-spacing:.16em;
  color:var(--text-3);font-family:var(--font-num);
}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-pad) 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.25;margin-top:14px}
.section-head p{margin-top:14px;color:var(--text-2);font-size:15px;max-width:56ch}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ============ 数据条 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--bg-2);overflow:hidden;box-shadow:var(--shadow-1);
}
.stat-item{padding:30px 26px;border-right:1px solid var(--line);transition:background-color .18s ease-out}
.stat-item:last-child{border-right:0}
.stat-item:hover{background:rgba(36,211,196,.06)}
.stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--brand);line-height:1.1;letter-spacing:-.01em}
.stat-num em{font-style:normal;font-size:16px;color:var(--text-2);margin-left:4px;font-weight:600}
.stat-label{margin-top:8px;font-size:13px;color:var(--text-3);letter-spacing:.04em}

/* ============ 时间线 ============ */
.timeline{margin-top:8px}
.tl-item{
  position:relative;display:grid;grid-template-columns:96px 1fr;gap:30px;
  padding-bottom:36px;
}
.tl-item:last-child{padding-bottom:0}
.tl-item::after{
  content:"";position:absolute;left:96px;top:22px;bottom:0;width:1px;background:var(--line);
}
.tl-item:last-child::after{display:none}
.tl-dot{
  position:absolute;left:96px;top:9px;width:11px;height:11px;border-radius:50%;
  background:var(--accent);transform:translateX(-50%);
  box-shadow:0 0 0 4px rgba(255,179,92,.14);z-index:1;
}
.tl-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:700;color:var(--text-3);letter-spacing:.06em;line-height:1.2;
  text-align:right;
}
.tl-body{padding-left:22px;border-left:1px solid transparent}
.tl-body h3{font-size:20px;font-weight:600;line-height:1.4}
.tl-body p{margin-top:8px;color:var(--text-2);font-size:15px;max-width:64ch}
.tl-meta{
  display:inline-block;margin-top:12px;font-size:12px;letter-spacing:.06em;
  color:var(--text-3);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:3px 12px;background:var(--bg-2);
}

/* ============ 角色卡 ============ */
.role-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.role-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px;box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.role-card:hover{transform:translateY(-2px);border-color:var(--line-brand);box-shadow:var(--shadow-2)}
.avatar{
  width:56px;height:56px;border-radius:var(--radius-pill);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:17px;font-weight:700;color:#04141A;
  background:linear-gradient(140deg,var(--brand),var(--brand-strong));
  margin-bottom:18px;
}
.role-card:nth-child(2) .avatar{background:linear-gradient(140deg,var(--accent),#ffd39a)}
.role-card:nth-child(3) .avatar{background:linear-gradient(140deg,var(--violet),#a79bff);color:#0b0a1f}
.role-card:nth-child(4) .avatar{background:linear-gradient(140deg,#5f7f9e,#9db6cc);color:#08121b}
.role-card h3{font-size:18px;font-weight:600;line-height:1.4}
.role-card p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ 对比图文 ============ */
.compare{display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center}
.img-wrap{
  position:relative;overflow:hidden;border-radius:16px;
  border:1px solid var(--line);background:#0B1222;
}
.img-wrap img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;opacity:0;transition:opacity .5s ease-out}
.img-wrap.is-loaded img{opacity:1}
.img-wrap::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,transparent 22%,rgba(255,255,255,.05) 50%,transparent 78%);
  animation:shine 1.2s linear infinite;
}
.img-wrap.is-loaded::after{display:none}
@keyframes shine{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.compare-list li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
}
.compare-list li:last-child{border-bottom:0}
.compare-list .ck{
  flex:none;width:22px;height:22px;border-radius:7px;margin-top:5px;
  background:var(--brand-dim);border:1px solid var(--line-brand);
  display:flex;align-items:center;justify-content:center;
}
.compare-list .ck svg{width:12px;height:12px}
.compare-list h4{font-size:16px;font-weight:600;line-height:1.5}
.compare-list p{font-size:14px;color:var(--text-2);line-height:1.7;margin-top:4px}

/* ============ 标签墙 ============ */
.tag-wall{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.tag{
  font-size:13px;color:var(--text-2);letter-spacing:.04em;
  border:1px solid var(--line);background:var(--bg-2);
  border-radius:var(--radius-pill);padding:9px 18px;
  transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out,transform .18s ease-out;
}
.tag:hover{color:var(--brand);border-color:var(--line-brand);background:var(--brand-dim);transform:translateY(-2px)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start}
.faq-aside h2{font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.25;margin-top:14px}
.faq-aside p{margin-top:14px;color:var(--text-2);font-size:15px;max-width:34ch}
.aside-card{
  margin-top:26px;padding:22px;border-radius:var(--radius-lg);
  background:var(--bg-2);border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.aside-card .t{font-size:14px;color:var(--text-3);letter-spacing:.06em}
.aside-card .v{font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--text-1);margin-top:6px;font-variant-numeric:tabular-nums}
.aside-card .btn{margin-top:16px}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;transition:border-color .18s ease-out;
}
.faq-item.is-open{border-color:var(--line-brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:17px 24px;font-size:17px;font-weight:600;text-align:left;color:var(--text-1);
  min-height:56px;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:none;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:15px;color:var(--brand);transition:transform .32s ease,background-color .18s ease-out;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-dim);border-color:var(--line-brand)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2);
  border-left:3px solid transparent;
}
.faq-item.is-open .faq-a-inner{border-left-color:var(--brand)}

/* ============ CTA 带 ============ */
.cta-band{
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  padding:40px 42px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-1);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:52ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;border-radius:var(--radius-pill);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line-brand);
  box-shadow:0 0 0 1px rgba(36,211,196,.22),0 8px 30px rgba(36,211,196,.20);
  color:var(--text-1);font-size:14px;font-weight:600;
  opacity:0;transform:translateY(8px);pointer-events:none;
  transition:opacity .22s ease-out,transform .22s ease-out;
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{color:var(--text-1);box-shadow:0 0 0 1px rgba(36,211,196,.5),0 12px 38px rgba(36,211,196,.32)}
.float-cta .mini{font-size:12px;color:var(--text-3);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.float-mobile{display:none}

/* ============ 页脚 ============ */
.site-footer{background:#03060D;border-top:1px solid var(--line);padding:72px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:34ch}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-btn{
  width:36px;height:36px;border-radius:var(--radius-pill);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--text-2);transition:color .18s ease-out,border-color .18s ease-out,background-color .18s ease-out;
}
.social-btn:hover{color:var(--brand);border-color:var(--line-brand);background:var(--brand-dim)}
.footer-title{font-size:13px;letter-spacing:.12em;color:var(--text-3);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:var(--text-2);align-items:flex-start}
.footer-contact .ico{
  flex:none;width:22px;height:22px;border-radius:7px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--brand);margin-top:3px;
}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.friend-links{display:flex;gap:18px;flex-wrap:wrap}
.friend-links a{color:var(--text-3)}
.friend-links a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1320px}
}
@media (max-width:1279px){
  :root{--sec-pad:84px}
}
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .nav-links{display:none}
  .menu-toggle{display:flex}
  .badge-live{display:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-deco{height:230px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .compare{grid-template-columns:1fr;gap:28px}
  .role-grid{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .container{padding:0 20px}
  .announce-mid span.hide-sm{display:none}
  .page-hero{padding:44px 0 58px}
  .hero-grid h1{font-size:clamp(30px,8vw,40px)}
  .hero-lead{font-size:15.5px}
  .tl-item{grid-template-columns:64px 1fr;gap:18px;padding-bottom:30px}
  .tl-item::after{left:64px}
  .tl-dot{left:64px}
  .tl-num{font-size:18px}
  .tl-body{padding-left:16px}
  .role-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:24px 22px}
  .stat-item:last-child{border-bottom:0}
  .cta-band{padding:28px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-brand{order:4}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-cta{display:none}
  .float-mobile{
    display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
    padding:0 0 env(safe-area-inset-bottom);
    background:var(--glass);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-top:1px solid var(--line);
    box-shadow:0 -12px 30px rgba(0,0,0,.5);
  }
  .float-mobile.is-show{display:flex;align-items:center;gap:12px;padding-left:16px;padding-right:16px;height:64px}
  .float-mobile .tel{
    flex:none;width:56px;height:44px;border-radius:var(--radius-sm);
    border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
    font-size:12px;color:var(--text-2);
  }
  .float-mobile .btn{flex:1}
}
@media (max-width:519px){
  .announce-inner{justify-content:flex-start;padding:7px 20px;gap:10px}
  .announce-mid{font-size:11px}
  .logo-name{font-size:16px}
  .hero-pills{gap:8px}
  .pill{font-size:11px;padding:5px 12px}
  .hero-cta .btn{width:100%}
  .faq-q{font-size:15.5px;padding:15px 18px}
  .faq-a-inner{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category4 */
/* ========== 设计变量 ========== */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1020;
  --bg-2:#111A2E;
  --bg-deep:#03060D;
  --brand:#24D3C4;
  --brand-strong:#3BE6D6;
  --brand-dim:rgba(36,211,196,.14);
  --accent:#FFB35C;
  --violet:#7C6BFF;
  --text-1:#E9F1FA;
  --text-2:#A8B6CC;
  --text-3:#6C7A93;
  --line:rgba(255,255,255,.09);
  --line-brand:rgba(36,211,196,.38);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --sh-card:0 12px 32px rgba(0,0,0,.35);
  --sh-card-hover:0 18px 44px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(36,211,196,.42),0 8px 30px rgba(36,211,196,.28);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ========== 基础 reset ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text-1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 6% -4%, rgba(36,211,196,.10), transparent 62%),
    radial-gradient(760px 520px at 102% 96%, rgba(255,179,92,.05), transparent 66%),
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:auto,auto,48px 48px,48px 48px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--brand-strong);}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
::selection{background:rgba(36,211,196,.28);color:var(--text-1);}
.num,.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ========== 容器 / 排版 ========== */
.container{max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;color:var(--brand);
  font-family:var(--font-num);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--line-brand);}
.h2{font-size:clamp(26px,3vw,38px);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.h4{font-size:17px;line-height:1.5;font-weight:600;}
.lead{color:var(--text-2);font-size:16px;line-height:1.9;max-width:76ch;}
.muted{color:var(--text-2);font-size:14px;line-height:1.7;}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:32px;flex-wrap:wrap;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-sm);font-weight:700;font-size:15px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04141A;box-shadow:0 8px 24px rgba(36,211,196,.22);}
.btn-primary:hover{background:var(--brand-strong);color:#04141A;transform:translateY(-1px);box-shadow:0 10px 36px rgba(36,211,196,.45);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 16px rgba(36,211,196,.28);}
.btn-ghost{background:transparent;color:var(--text-1);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--text-1);background:var(--brand-dim);transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-glow{box-shadow:var(--glow);}
.btn-glow:hover{box-shadow:0 0 0 1px rgba(36,211,196,.55),0 12px 38px rgba(36,211,196,.45);}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand);
  font-weight:600;font-size:15px;position:relative;
}
.btn-text span{transition:transform .18s ease-out;}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--brand);
  transition:width .22s ease-out;
}
.btn-text:hover::after{width:calc(100% - 22px);}
.btn-text:hover span{transform:translateX(4px);}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  border:1px solid var(--line);color:var(--text-2);
}
.badge-brand{border-color:var(--line-brand);color:var(--brand);background:var(--brand-dim);}
.badge-accent{border-color:rgba(255,179,92,.42);color:var(--accent);}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.badge-dot.warm{background:var(--accent);}
.badge-dot.gray{background:var(--text-3);}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:height .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:transparent;
  transition:background .22s ease-out;
}
.site-header.is-scrolled::after{background:linear-gradient(90deg,transparent,var(--line-brand),transparent);}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height .22s ease-out;}
.site-header.is-scrolled .header-inner{height:60px;}

.logo{display:flex;align-items:center;gap:10px;color:var(--text-1);flex-shrink:0;}
.logo:hover{color:var(--text-1);}
.logo-mark{width:28px;height:28px;flex-shrink:0;}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-name{font-size:17px;font-weight:700;letter-spacing:.01em;}
.logo-sub{font-size:10px;letter-spacing:.22em;color:var(--text-3);font-family:var(--font-num);}

.nav-links{display:flex;align-items:center;gap:28px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0;
  transition:color .18s ease-out;
}
.nav-links a::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--brand);opacity:0;transition:opacity .18s ease-out;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--brand);
  transition:width .22s ease-out;
}
.nav-links a:hover{color:var(--text-1);}
.nav-links a:hover::after{width:100%;}
.nav-links a.is-active{color:var(--text-1);font-weight:600;}
.nav-links a.is-active::before{opacity:1;}
.nav-links a.is-active::after{width:100%;}

.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.countdown-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  padding:6px 12px;border-radius:999px;border:1px solid rgba(255,179,92,.42);color:var(--accent);
  white-space:nowrap;
}
.countdown-badge b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;}

.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.menu-toggle i{display:block;width:18px;height:1.5px;background:var(--text-1);transition:transform .22s ease-out,opacity .22s ease-out;}
.menu-toggle[aria-expanded="true"] i:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] i:nth-child(2){opacity:0;}
.menu-toggle[aria-expanded="true"] i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:0;bottom:0;z-index:55;
  background:linear-gradient(160deg,rgba(10,16,32,.97),rgba(5,7,15,.99));
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  padding:104px 24px 40px;
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .24s ease-out,opacity .24s ease-out,visibility .24s;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-drawer nav{display:flex;flex-direction:column;gap:4px;}
.mobile-drawer nav a{
  font-size:20px;font-weight:600;color:var(--text-1);padding:14px 0;border-bottom:1px solid var(--line);
}
.mobile-drawer nav a.is-active{color:var(--brand);}
.drawer-foot{margin-top:32px;display:flex;flex-direction:column;gap:14px;}
.drawer-foot .muted{font-size:13px;}
body.no-scroll{overflow:hidden;}

/* ========== 小 Hero ========== */
.page-hero{
  position:relative;overflow:hidden;
  padding:84px 0 72px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.20;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;color:var(--text-3);margin-bottom:24px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--text-3);opacity:.6;}
.crumbs .current{color:var(--text-2);}

.hero-grid{display:grid;grid-template-columns:1fr 360px;gap:48px;align-items:center;}
.hero-grid h1{
  font-size:clamp(32px,4.6vw,54px);font-weight:700;line-height:1.14;letter-spacing:-.01em;margin-bottom:18px;
}
.hero-grid h1 em{font-style:normal;color:var(--brand);}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.85;max-width:56ch;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(17,26,46,.6);font-size:13px;color:var(--text-2);
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;}

.hero-art{
  position:relative;border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  padding:26px;box-shadow:var(--sh-card);
}
.hero-art svg{width:100%;height:auto;display:block;}
.hero-art .art-cap{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--text-3);
}
.hero-art .art-cap b{color:var(--brand);font-family:var(--font-num);font-size:14px;}

/* ========== 搜索框 ========== */
.search-bar{
  display:flex;align-items:center;gap:12px;
  padding:8px 8px 8px 20px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg-2);
  max-width:640px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.search-bar:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(36,211,196,.18);}
.search-bar input{
  flex:1;border:0;background:transparent;height:44px;font-size:15px;color:var(--text-1);outline:none;
}
.search-bar input::placeholder{color:var(--text-3);}
.search-bar .search-ico{width:18px;height:18px;flex-shrink:0;color:var(--text-3);}
.search-bar .btn{padding:10px 22px;font-size:14px;}
.quick-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.quick-tags a{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);font-size:13px;color:var(--text-2);
  transition:all .18s ease-out;
}
.quick-tags a:hover{border-color:var(--line-brand);color:var(--brand);background:var(--brand-dim);}

/* ========== 文档索引 ========== */
.doc-layout{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start;}
.doc-side{position:sticky;top:104px;}
.doc-side .side-title{
  font-size:12px;letter-spacing:.18em;color:var(--text-3);font-family:var(--font-num);
  text-transform:uppercase;margin-bottom:16px;
}
.doc-side nav{display:flex;flex-direction:column;gap:2px;}
.doc-side nav a{
  position:relative;display:block;padding:11px 14px 11px 18px;font-size:15px;color:var(--text-2);
  border-radius:var(--r-sm);transition:all .18s ease-out;
}
.doc-side nav a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--brand);border-radius:3px;transition:height .2s ease-out;
}
.doc-side nav a:hover{color:var(--text-1);background:rgba(255,255,255,.03);}
.doc-side nav a.is-current{color:var(--text-1);font-weight:600;background:var(--brand-dim);}
.doc-side nav a.is-current::before{height:20px;}
.doc-side .side-note{
  margin-top:28px;padding:18px;border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--bg-2);font-size:13px;line-height:1.8;color:var(--text-2);
}
.doc-side .side-note b{display:block;color:var(--text-1);font-size:14px;margin-bottom:6px;}

.doc-group{margin-bottom:40px;scroll-margin-top:104px;}
.doc-group:last-child{margin-bottom:0;}
.doc-group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px;}
.doc-group-head .idx{
  font-family:var(--font-num);font-size:13px;color:var(--brand);letter-spacing:.08em;
}
.doc-group-head h3{font-size:19px;font-weight:600;}
.doc-group-head .cnt{margin-left:auto;font-size:12px;color:var(--text-3);font-family:var(--font-num);}

.doc-list{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-2);overflow:hidden;}
.doc-item{
  display:flex;align-items:center;gap:16px;padding:0 22px;min-height:56px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease-out,padding-left .18s ease-out;
}
.doc-item:last-child{border-bottom:0;}
.doc-item:hover{background:var(--brand-dim);}
.doc-item .txt{flex:1;min-width:0;}
.doc-item .txt strong{display:block;font-size:15px;font-weight:600;color:var(--text-1);transition:color .18s ease-out;}
.doc-item:hover .txt strong{color:var(--brand);}
.doc-item .txt span{display:block;font-size:13px;color:var(--text-2);line-height:1.7;}
.doc-item .arrow{flex-shrink:0;color:var(--text-3);transition:transform .18s ease-out,color .18s ease-out;}
.doc-item:hover .arrow{transform:translateX(4px);color:var(--brand);}
.doc-item .tag{
  flex-shrink:0;font-size:11px;padding:3px 10px;border-radius:999px;border:1px solid var(--line);
  color:var(--text-3);letter-spacing:.04em;
}
.doc-item .tag.hot{border-color:rgba(255,179,92,.42);color:var(--accent);}

/* ========== 支持范围（图文 + 数据） ========== */
.scope-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch;}
.scope-card{
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-2);
  overflow:hidden;box-shadow:var(--sh-card);transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.scope-card:hover{border-color:var(--line-brand);box-shadow:var(--sh-card-hover);}
.scope-media{position:relative;aspect-ratio:16/9;background:#0b1220;overflow:hidden;}
.scope-media img{width:100%;height:100%;object-fit:cover;}
.scope-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,7,15,.86));
}
.scope-media .cap{
  position:absolute;left:20px;bottom:18px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12px;color:var(--text-1);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));
  backdrop-filter:blur(12px) saturate(140%);
}
.scope-body{padding:26px 26px 28px;}
.scope-body p{color:var(--text-2);font-size:15px;line-height:1.9;}
.scope-body ul{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
.scope-body ul li{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.scope-body ul li::before{
  content:"";flex-shrink:0;width:6px;height:6px;border-radius:2px;background:var(--brand);margin-top:9px;
}

.stat-card{
  display:flex;flex-direction:column;gap:0;
  border-radius:var(--r-lg);border:1px solid var(--line);background:var(--bg-2);
  overflow:hidden;box-shadow:var(--sh-card);
}
.stat-row{
  display:flex;align-items:baseline;gap:16px;padding:22px 26px;border-bottom:1px solid var(--line);
}
.stat-row:last-child{border-bottom:0;}
.stat-row .val{font-family:var(--font-num);font-size:28px;font-weight:700;color:var(--brand);min-width:96px;}
.stat-row .val.warm{color:var(--accent);}
.stat-row .desc b{display:block;font-size:15px;font-weight:600;margin-bottom:2px;}
.stat-row .desc span{font-size:13px;color:var(--text-2);line-height:1.7;}

/* ========== FAQ ========== */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start;}
.faq-aside .lead{margin-top:14px;}
.faq-aside-card{
  margin-top:28px;padding:22px;border-radius:var(--r-md);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
}
.faq-aside-card b{display:block;font-size:15px;margin-bottom:6px;}
.faq-aside-card p{font-size:13px;color:var(--text-2);line-height:1.8;margin-bottom:14px;}

.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{
  border-radius:var(--r-md);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(130%);
  transition:border-color .18s ease-out;
}
.faq-item.is-open{border-color:var(--line-brand);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  min-height:56px;padding:14px 24px;font-size:17px;font-weight:600;color:var(--text-1);
  position:relative;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--brand);opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-q .sign{
  margin-left:auto;flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform .28s ease;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:14px;height:1.6px;}
.faq-q .sign::after{width:1.6px;height:14px;}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq-a p{padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ========== 联系支持 ========== */
.support-card{
  border-radius:var(--r-lg);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(18px) saturate(140%);
  padding:48px;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  box-shadow:var(--sh-card);
}
.support-card h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;margin-bottom:14px;}
.support-card p{color:var(--text-2);font-size:15px;line-height:1.9;max-width:52ch;}
.support-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.support-meta{display:flex;flex-direction:column;gap:14px;}
.meta-row{
  display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--bg-2);
}
.meta-row .ico{
  width:34px;height:34px;flex-shrink:0;border-radius:10px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-brand);color:var(--brand);font-size:13px;
}
.meta-row .txt b{display:block;font-size:14px;font-weight:600;}
.meta-row .txt span{font-size:13px;color:var(--text-2);font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ========== 页脚 ========== */
.site-footer{
  background:var(--bg-deep);border-top:1px solid var(--line);padding:72px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .logo-text{margin-bottom:16px;}
.footer-brand p{font-size:13px;line-height:1.9;color:var(--text-2);max-width:34ch;}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-btn{
  width:34px;height:34px;border-radius:999px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:13px;transition:all .18s ease-out;
}
.social-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-dim);transform:translateY(-2px);}
.footer-title{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:13.5px;color:var(--text-2);}
.footer-links a:hover{color:var(--brand);}
.footer-contact{display:flex;flex-direction:column;gap:12px;}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7;}
.footer-contact .ico{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);font-size:11px;color:var(--brand);
}
.footer-contact .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.friend-links{display:flex;gap:20px;flex-wrap:wrap;}
.friend-links a{color:var(--text-3);}
.friend-links a:hover{color:var(--brand);}

/* ========== 响应式 ========== */
@media (min-width:1440px){
  .container{max-width:1320px;}
}
@media (max-width:1279px){
  .hero-grid{grid-template-columns:1fr 320px;gap:36px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .nav-links{display:none;}
  .menu-toggle{display:flex;}
  .countdown-badge{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-art{max-width:520px;}
  .doc-layout{grid-template-columns:1fr;gap:28px;}
  .doc-side{position:static;top:auto;}
  .doc-side nav{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .doc-side nav a{
    border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13.5px;
  }
  .doc-side nav a::before{display:none;}
  .doc-side .side-note{display:none;}
  .scope-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .support-card{grid-template-columns:1fr;padding:36px;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:56px 0 48px;}
  .hero-grid h1{font-size:clamp(30px,7.4vw,40px);}
  .header-actions .btn{display:none;}
  .search-bar{border-radius:var(--r-md);padding:8px 8px 8px 16px;flex-wrap:wrap;}
  .search-bar input{min-width:0;}
  .doc-item{flex-wrap:wrap;padding:14px 18px;gap:10px;}
  .doc-item .tag{order:3;}
  .stat-row{flex-direction:column;gap:6px;align-items:flex-start;}
  .stat-row .val{font-size:26px;min-width:0;}
  .faq-q{font-size:16px;padding:14px 18px;}
  .faq-a p{padding:0 18px 18px;}
  .support-card{padding:28px 22px;}
  .support-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:479px){
  .hero-pills .pill{font-size:12px;padding:6px 12px;}
  .quick-tags a{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}