/* roulang page: index */
:root{
  --bg:#05080F;
  --panel:#0A1020;
  --panel-2:#0F1830;
  --glass:rgba(18,30,54,.55);
  --glass-line:rgba(140,190,255,.14);
  --brand:#21C7D8;
  --brand-deep:#0E4A78;
  --brand-soft:rgba(33,199,216,.14);
  --accent:#FF7A2F;
  --accent-hi:#FF9455;
  --t1:#EAF2FF;
  --t2:#A9B8D0;
  --t3:#6C7C99;
  --ok:#38D39F;
  --warn:#FF5C6C;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:14px;
  --r-input:12px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 0 0 1px rgba(33,199,216,.22), 0 12px 32px rgba(33,199,216,.16);
  --sh-accent:0 10px 30px rgba(255,122,47,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"Inter","Rajdhani","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(33,199,216,.32);color:#F4FAFF}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;font-weight:600}
.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.shell{max-width:1320px}}
@media (max-width:575.98px){.shell{padding:0 16px}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease)}
.btn-accent{background:var(--accent);color:#1A0D04;box-shadow:var(--sh-accent)}
.btn-accent:hover{background:var(--accent-hi);box-shadow:0 12px 38px rgba(255,122,47,.45);transform:translateY(-2px)}
.btn-accent:active{transform:scale(.98)}
.btn-ghost{background:var(--glass);border-color:var(--glass-line);color:var(--t1);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%)}
.btn-ghost:hover{border-color:rgba(33,199,216,.55);color:#DFFAFF;transform:translateY(-2px)}
.btn-line{background:transparent;border-color:rgba(33,199,216,.4);color:var(--brand)}
.btn-line:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;min-height:44px;padding:4px 0}
.btn-text:hover{color:#7EE7F2}
.btn-text .arw{transition:transform .2s var(--ease)}
.btn-text:hover .arw{transform:translateX(4px)}

/* ---------- badges / tags ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;line-height:1.4;color:var(--brand);background:var(--brand-soft);border:1px solid rgba(33,199,216,.28);white-space:nowrap}
.badge-accent{color:var(--accent);background:rgba(255,122,47,.12);border-color:rgba(255,122,47,.35)}
.badge-soft{color:var(--t2);background:rgba(140,190,255,.08);border-color:var(--glass-line)}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:16px;z-index:1040;padding:0 16px}
.nav-shell{max-width:1240px;margin:0 auto;height:64px;display:flex;align-items:center;gap:18px;padding:0 14px 0 18px;border-radius:999px;background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06);transition:background .3s var(--ease),box-shadow .3s var(--ease)}
.site-header.is-scrolled .nav-shell{background:rgba(10,16,32,.86);box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.brand-mark{width:30px;height:30px;border-radius:10px;background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 100%);box-shadow:0 0 0 1px rgba(33,199,216,.4),0 0 18px rgba(33,199,216,.35);position:relative;flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:8px 8px 8px 10px;border-radius:4px;background:rgba(5,8,15,.72);box-shadow:inset 0 0 0 1px rgba(234,242,255,.25)}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.01em;color:var(--t1);white-space:nowrap}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
.nav-links a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:999px;font-size:14px;color:var(--t2);white-space:nowrap}
.nav-links a:hover{color:var(--t1);background:rgba(140,190,255,.07)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.24)}
.nav-cta{display:none;margin-left:8px}
.nav-toggle{margin-left:auto;width:44px;height:44px;border-radius:14px;background:rgba(140,190,255,.06);border:1px solid var(--glass-line);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:rgba(10,16,32,.94);border-left:1px solid var(--glass-line);backdrop-filter:blur(20px) saturate(140%);-webkit-backdrop-filter:blur(20px) saturate(140%);transform:translateX(102%);transition:transform .34s var(--ease);z-index:1050;padding:88px 22px 28px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer a{display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:14px;font-size:15px;color:var(--t2);border:1px solid transparent}
.drawer a:hover{color:var(--t1);background:rgba(140,190,255,.07)}
.drawer a.active{color:var(--brand);background:var(--brand-soft);border-color:rgba(33,199,216,.24)}
.drawer .btn{margin-top:18px}
.drawer-mask{position:fixed;inset:0;background:rgba(3,6,12,.6);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:1035}
.drawer-mask.open{opacity:1;pointer-events:auto}
@media (min-width:992px){
  .nav-links{display:flex}
  .nav-cta{display:inline-flex}
  .nav-toggle{display:none}
}

/* ---------- hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;padding:120px 0 72px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;z-index:0}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.72) 0%,rgba(5,8,15,.55) 42%,rgba(5,8,15,.96) 100%)}
.hero-glow{position:absolute;top:-260px;left:50%;transform:translateX(-50%);width:900px;height:520px;background:radial-gradient(closest-side,rgba(33,199,216,.30),transparent 72%);filter:blur(10px);z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--brand);text-transform:uppercase;margin-bottom:20px}
.eyebrow::before{content:"";width:28px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(33,199,216,.8)}
.hero h1{font-size:clamp(28px,5vw,56px);line-height:1.15;font-weight:800;letter-spacing:-.02em;color:var(--t1)}
.hero h1 em{font-style:normal;color:var(--brand);text-shadow:0 0 34px rgba(33,199,216,.42)}
.hero-sub{margin-top:22px;font-size:16px;line-height:1.85;color:var(--t2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-mini{display:flex;flex-wrap:wrap;gap:32px;margin-top:42px;padding-top:26px;border-top:1px solid rgba(140,190,255,.12)}
.hero-mini li{display:flex;flex-direction:column;gap:4px}
.micro-num{font-family:var(--mono);font-size:24px;font-weight:700;letter-spacing:.04em;color:var(--brand)}
.micro-label{font-size:13px;color:var(--t3)}

/* phone mockup */
.hero-visual{display:flex;justify-content:center}
.phone{position:relative;width:min(300px,80vw);aspect-ratio:9/18.6;border-radius:38px;background:linear-gradient(160deg,rgba(20,34,60,.92),rgba(8,14,28,.96));border:1px solid rgba(140,190,255,.2);box-shadow:0 30px 60px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08);padding:14px;animation:floaty 7s ease-in-out infinite}
.phone::after{content:"";position:absolute;top:14px;left:50%;transform:translateX(-50%);width:64px;height:6px;border-radius:999px;background:rgba(140,190,255,.22)}
.phone-screen{height:100%;border-radius:28px;background:linear-gradient(180deg,#080E1C 0%,#0A1striped 100%);background:linear-gradient(180deg,#080E1C 0%,#0A1226 100%);border:1px solid rgba(140,190,255,.1);padding:28px 14px 14px;display:flex;flex-direction:column;gap:12px;overflow:hidden}
.p-glass{border-radius:16px;background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);padding:12px;display:flex;flex-direction:column;gap:9px}
.sk{height:8px;border-radius:999px;background:linear-gradient(90deg,rgba(33,199,216,.5),rgba(33,199,216,.12))}
.sk.w70{width:70%}.sk.w50{width:50%}.sk.w88{width:88%}
.sk.dim{background:linear-gradient(90deg,rgba(140,190,255,.26),rgba(140,190,255,.08))}
.p-blocks{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.p-block{height:46px;border-radius:12px;background:linear-gradient(140deg,rgba(33,199,216,.22),rgba(14,74,120,.35));border:1px solid rgba(33,199,216,.2)}
.p-block.acc{background:linear-gradient(140deg,rgba(255,122,47,.28),rgba(120,52,16,.3));border-color:rgba(255,122,47,.3)}
.p-bars{display:flex;align-items:flex-end;gap:6px;height:52px;margin-top:2px}
.p-bars i{flex:1;border-radius:6px 6px 3px 3px;background:linear-gradient(180deg,rgba(33,199,216,.75),rgba(33,199,216,.12))}
.p-bars i:nth-child(1){height:38%}.p-bars i:nth-child(2){height:64%}.p-bars i:nth-child(3){height:46%}.p-bars i:nth-child(4){height:82%}.p-bars i:nth-child(5){height:56%}.p-bars i:nth-child(6){height:94%}
.p-float{position:absolute;right:-14px;bottom:88px;width:150px;border-radius:16px;padding:12px;background:rgba(10,18,38,.82);border:1px solid rgba(255,122,47,.32);box-shadow:var(--sh-accent);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%)}
.p-float .sk{background:linear-gradient(90deg,rgba(255,122,47,.6),rgba(255,122,47,.16))}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
@media (min-width:992px){
  .hero-inner{grid-template-columns:6fr 6fr;gap:40px}
}
@media (max-width:991.98px){
  .hero{min-height:88vh;padding:112px 0 64px}
  .hero-visual{order:2}
}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative}
.section.tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:44px}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--brand);padding-left:0}
.sec-tag::before{content:"";display:block;width:36px;height:3px;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(33,199,216,.7);margin-bottom:14px}
.section-head h2{margin-top:10px;font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--t2);font-size:15px;line-height:1.85}
.section-alt{background:linear-gradient(180deg,rgba(10,16,32,0) 0%,rgba(10,16,32,.9) 22%,rgba(10,16,32,.9) 78%,rgba(10,16,32,0) 100%)}

/* ---------- stat bar ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--glass-line);border:1px solid var(--glass-line);border-radius:var(--r-lg);overflow:hidden;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%)}
.stat-bar li{background:rgba(10,16,32,.72);padding:26px 20px;display:flex;flex-direction:column;gap:6px}
.stat-bar strong{font-family:var(--mono);font-size:clamp(24px,3.4vw,34px);font-weight:700;letter-spacing:.04em;color:var(--t1)}
.stat-bar strong span{color:var(--brand);font-size:.6em;margin-left:2px}
.stat-bar p{font-size:13px;color:var(--t3);line-height:1.6}
@media (min-width:768px){.stat-bar{grid-template-columns:repeat(4,1fr)}}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,rgba(33,199,216,.65),rgba(33,199,216,.06))}
.tl-item{position:relative;padding:0 0 34px 0}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-26px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(33,199,216,.16),0 0 18px rgba(33,199,216,.7);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(33,199,216,.16),0 0 18px rgba(33,199,216,.7)}50%{box-shadow:0 0 0 9px rgba(33,199,216,.07),0 0 26px rgba(33,199,216,.9)}}
.tl-card{background:var(--glass);border:1px solid var(--glass-line);border-left:3px solid rgba(33,199,216,.55);border-radius:var(--r-md);padding:20px 22px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-left-color:var(--brand)}
.tl-time{font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--brand);display:block;margin-bottom:8px}
.tl-card h3{font-size:18px;font-weight:600;line-height:1.4}
.tl-card p{margin-top:10px;font-size:14px;color:var(--t2);line-height:1.8}
@media (min-width:992px){
  .timeline{padding-left:0}
  .timeline::before{left:50%;transform:translateX(-50%)}
  .tl-item{display:grid;grid-template-columns:1fr 72px 1fr;align-items:start;padding-bottom:20px}
  .tl-dot{position:relative;left:auto;top:26px;justify-self:center;grid-column:2}
  .tl-card{grid-column:1;text-align:right}
  .tl-item:nth-child(even) .tl-card{grid-column:3;text-align:left}
  .tl-item:nth-child(even) .tl-dot{grid-column:2}
  .tl-item:nth-child(odd) .tl-card{border-left:1px solid var(--glass-line);border-right:3px solid rgba(33,199,216,.55)}
}

/* ---------- feature cards ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
.grid-4{grid-template-columns:1fr}
@media (min-width:576px){.grid-2{grid-template-columns:repeat(2,1fr)}}
@media (min-width:768px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:992px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:1200px){.grid-4{grid-template-columns:repeat(4,1fr)}}

.feature{background:var(--panel);border:1px solid rgba(140,190,255,.1);border-radius:var(--r-lg);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.feature:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.42);box-shadow:var(--sh-2)}
.feature-thumb{position:relative;aspect-ratio:1/1;overflow:hidden}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature:hover .feature-thumb img{transform:scale(1.06)}
.feature-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 35%,rgba(5,8,15,.86) 100%)}
.feature-body{padding:18px 20px 22px}
.feature-body h3{font-size:18px;font-weight:600;line-height:1.4}
.feature-body p{margin-top:8px;font-size:14px;color:var(--t2);line-height:1.75}

/* ---------- plans ---------- */
.plans{display:grid;grid-auto-flow:column;grid-auto-columns:82%;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;padding:8px 4px 20px;margin:-8px -4px -20px}
.plans::-webkit-scrollbar{height:6px}
.plans::-webkit-scrollbar-thumb{background:rgba(140,190,255,.2);border-radius:999px}
.plan{scroll-snap-align:center;position:relative;background:var(--panel-2);border:1px solid rgba(140,190,255,.12);border-radius:var(--r-lg);padding:28px 24px;display:flex;flex-direction:column;gap:18px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.plan:hover{transform:translateY(-4px)}
.plan.recommend{border-color:rgba(255,122,47,.42);box-shadow:var(--sh-2);transform:scale(1.04)}
.plan.recommend::before{content:"";position:absolute;top:0;left:24px;right:24px;height:3px;border-radius:0 0 4px 4px;background:var(--accent);box-shadow:0 0 18px rgba(255,122,47,.8)}
.plan-name{font-size:19px;font-weight:700}
.plan-desc{font-size:13px;color:var(--t3);line-height:1.7}
.plan-list{display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--t2)}
.plan-list li{display:flex;gap:10px;line-height:1.7}
.plan-list .ic{flex:0 0 18px;width:18px;height:18px;margin-top:3px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}
.ic.on{background:var(--brand-soft);color:var(--brand);border:1px solid rgba(33,199,216,.45)}
.ic.off{background:rgba(108,124,153,.14);color:var(--t3);border:1px solid rgba(108,124,153,.3)}
.plan-list li.off{color:var(--t3)}
.plan-foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(140,190,255,.12)}
@media (min-width:992px){
  .plans{grid-auto-flow:row;grid-template-columns:repeat(3,1fr);overflow:visible;margin:0;padding:0}
  .plan{scroll-snap-align:none}
}

/* ---------- news ---------- */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:40px}
.news-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:992px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;background:var(--panel);border:1px solid rgba(140,190,255,.1);border-radius:var(--r-lg);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.news-card:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.42);box-shadow:var(--sh-2)}
.news-thumb{aspect-ratio:16/9;overflow:hidden;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 40%,rgba(5,8,15,.8) 100%)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{font-size:14px;color:var(--t2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:14px;border-top:1px solid rgba(140,190,255,.1);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3)}
.news-card:hover .news-meta .arw{transform:translateX(4px)}
.news-meta .arw{transition:transform .2s var(--ease);color:var(--brand);font-weight:700}
.news-empty{min-height:320px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:var(--panel);border:1px dashed rgba(140,190,255,.2);border-radius:var(--r-lg);padding:48px 24px;text-align:center}
.news-empty svg{opacity:.7}
.news-empty p{color:var(--t2);font-size:15px}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto;background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-lg);padding:12px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%)}
.faq-item{border-bottom:1px solid rgba(140,190,255,.1)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 16px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--t1);cursor:pointer;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-q .caret{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid rgba(33,199,216,.4);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:12px;transition:transform .24s var(--ease),background .24s var(--ease)}
.faq-item.open .faq-q .caret{transform:rotate(180deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 16px 22px;color:var(--t2);font-size:15px;line-height:1.85}

/* ---------- cta + form ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:28px;border:1px solid var(--glass-line);background:var(--panel);padding:44px 28px}
.cta-band::before{content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;background:radial-gradient(closest-side,rgba(33,199,216,.22),transparent 70%);pointer-events:none}
.cta-band::after{content:"";position:absolute;bottom:-160px;left:-60px;width:360px;height:360px;background:radial-gradient(closest-side,rgba(255,122,47,.14),transparent 70%);pointer-events:none}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px}
.cta-copy h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700}
.cta-copy p{margin-top:16px;color:var(--t2);font-size:15px;line-height:1.85;max-width:460px}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--t2);line-height:1.7}
.cta-points .dot{flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;box-shadow:0 0 12px rgba(255,122,47,.8)}
.form-panel{background:var(--panel-2);border:1px solid rgba(140,190,255,.12);border-radius:var(--r-lg);padding:26px 22px}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:576px){.form-grid{grid-template-columns:1fr 1fr}.form-grid .full{grid-column:1/-1}}
.field label{display:block;font-size:13px;color:var(--t2);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:46px;padding:11px 14px;border-radius:var(--r-input);background:rgba(5,8,15,.6);border:1px solid rgba(140,190,255,.16);color:var(--t1);font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t2) 50%),linear-gradient(135deg,var(--t2) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--t3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(33,199,216,.16)}
.field.error input,.field.error select,.field.error textarea{border-color:var(--warn);box-shadow:0 0 0 4px rgba(255,92,108,.14)}
.field .tip{margin-top:6px;font-size:12px;color:var(--warn);display:none}
.field.error .tip{display:block}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--t2);line-height:1.7}
.check input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand)}
.form-note{margin-top:14px;font-size:12px;color:var(--t3);line-height:1.7}
.form-ok{margin-top:14px;font-size:13px;color:var(--ok);display:none}
.form-ok.show{display:block}
@media (min-width:992px){.cta-inner{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;border-top:1px solid rgba(140,190,255,.1);background:linear-gradient(180deg,rgba(10,16,32,0) 0%,rgba(10,16,32,.85) 100%)}
.footer-top{display:grid;grid-template-columns:1fr;gap:40px;padding:64px 0 44px}
@media (min-width:768px){.footer-top{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
.f-col h4{font-size:14px;letter-spacing:.1em;color:var(--t1);margin-bottom:18px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-brand .brand-mark{width:26px;height:26px;border-radius:9px}
.f-brand span{font-size:16px;font-weight:700}
.f-col p{font-size:13px;color:var(--t3);line-height:1.8;max-width:320px}
.f-links{display:flex;flex-direction:column;gap:12px}
.f-links a{font-size:14px;color:var(--t2);width:fit-content;min-height:24px}
.f-links a:hover{color:var(--brand)}
.f-contact{display:flex;flex-direction:column;gap:14px}
.f-contact li{font-size:14px;color:var(--t2);display:flex;gap:10px;line-height:1.7}
.f-contact strong{color:var(--t1);font-weight:600}
.f-qr{width:96px;height:96px;border-radius:14px;border:1px solid var(--glass-line);background:repeating-linear-gradient(45deg,rgba(33,199,216,.16) 0 6px,rgba(140,190,255,.06) 6px 12px);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--t3);text-align:center;padding:8px;line-height:1.5}
.footer-bottom{border-top:1px solid rgba(140,190,255,.1);padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:13px;color:var(--t3)}
.footer-bottom a{color:var(--t3)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- back to top ---------- */
.to-top{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);color:var(--t1);display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .3s var(--ease),transform .3s var(--ease);z-index:1030}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{border-color:rgba(33,199,216,.5);color:var(--brand)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#05080F;
  --panel:#0A1020;
  --panel-2:#0F1830;
  --glass:rgba(18,30,54,.55);
  --glass-line:rgba(140,190,255,.14);
  --brand:#21C7D8;
  --brand-deep:#0E4A78;
  --brand-soft:rgba(33,199,216,.14);
  --accent:#FF7A2F;
  --accent-hi:#FF9455;
  --t1:#EAF2FF;
  --t2:#A9B8D0;
  --t3:#6C7C99;
  --ok:#38D39F;
  --warn:#FF5C6C;
  --line:rgba(140,190,255,.12);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(33,199,216,.22),0 12px 32px rgba(33,199,216,.16);
  --sh-accent:0 10px 30px rgba(255,122,47,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Rajdhani",ui-monospace,SFMono-Regular,Menlo,monospace;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--t1);
  --bs-primary:var(--brand);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#5FE3F0;
  --bs-border-color:var(--line);
  --bs-body-font-family:var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:520px;
  background:radial-gradient(60% 100% at 50% 0%,rgba(33,199,216,.16),rgba(5,8,15,0) 70%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#5FE3F0}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--t1)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(33,199,216,.28);color:#fff}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.mono{font-family:var(--font-num);letter-spacing:.04em;font-weight:600}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:90;padding:0 16px}
.nav-shell{
  max-width:1240px;margin:0 auto;min-height:64px;
  display:flex;align-items:center;gap:18px;
  padding:8px 12px 8px 18px;
  border-radius:999px;
  background:rgba(10,16,32,.72);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled .nav-shell{background:rgba(7,12,24,.92);box-shadow:0 14px 40px rgba(0,0,0,.55)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 0 1px rgba(33,199,216,.35),0 6px 18px rgba(33,199,216,.35);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 6px;
  border-radius:3px;background:rgba(5,8,15,.85);
}
.brand-text{font-size:16px;font-weight:700;color:var(--t1);letter-spacing:.01em;white-space:nowrap}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-flex;align-items:center;min-height:44px;
  padding:0 14px;border-radius:999px;
  font-size:14.5px;color:var(--t2);font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.22)}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-toggle{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.03);color:var(--t1);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:rgba(9,14,28,.94);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--glass-line);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:88px 22px 28px;z-index:95;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;
  padding:0 14px;border-radius:14px;color:var(--t2);font-size:15.5px;
  border:1px solid transparent;
}
.nav-drawer a.active{color:var(--brand);background:var(--brand-soft);border-color:rgba(33,199,216,.22)}
.nav-drawer a:hover{color:var(--t1);background:rgba(255,255,255,.05)}
.nav-drawer .drawer-cta{margin-top:18px;display:block}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,5,10,.6);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:92;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-accent{background:linear-gradient(180deg,var(--accent-hi),var(--accent));color:#1A0D04;box-shadow:var(--sh-accent)}
.btn-accent:hover{color:#1A0D04;transform:translateY(-2px);box-shadow:0 16px 40px rgba(255,122,47,.42)}
.btn-accent:active{transform:scale(.98)}
.btn-ghost{background:rgba(255,255,255,.03);border-color:var(--glass-line);color:var(--t1)}
.btn-ghost:hover{background:rgba(33,199,216,.12);border-color:rgba(33,199,216,.35);color:var(--t1);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;margin-top:28px;
  min-height:250px;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--glass-line);
  background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  display:flex;align-items:flex-end;
  box-shadow:var(--sh-1);
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,8,15,.94) 0%,rgba(5,8,15,.72) 52%,rgba(33,199,216,.16) 100%);
}
.page-banner .banner-inner{position:relative;z-index:2;padding:30px 28px;width:100%}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t3);margin-bottom:14px}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--brand)}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--brand);background:rgba(5,8,15,.6);border:1px solid rgba(33,199,216,.3);
  margin-bottom:14px;
}
.page-banner h1{
  font-size:clamp(26px,4.4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.15;
  max-width:820px;
}
.page-banner .banner-sub{margin-top:12px;color:var(--t2);font-size:15px;max-width:720px}

/* ---------- 概览指标 ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(2,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;margin-top:22px;
}
.metric{background:var(--panel);padding:20px 22px}
.metric strong{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--brand);letter-spacing:.04em}
.metric span{display:block;margin-top:6px;font-size:13.5px;color:var(--t3)}

/* ---------- 分区标题 ---------- */
.section-head{margin-bottom:34px;max-width:760px}
.section-head .kicker{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.14em;color:var(--brand);text-transform:uppercase}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-head h2{margin-top:14px;font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;color:var(--t2);font-size:15px}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 10px;
  scrollbar-width:none;-ms-overflow-style:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;min-height:44px;
  padding:0 18px;border-radius:999px;font-size:14px;color:var(--t2);
  background:var(--panel);border:1px solid var(--line);cursor:pointer;
  transition:all .2s var(--ease);white-space:nowrap;
}
.chip:hover{color:var(--t1);border-color:rgba(33,199,216,.32);transform:translateY(-2px)}
.chip.is-active{color:var(--brand);background:var(--brand-soft);border-color:rgba(33,199,216,.4)}

/* ---------- 功能分区卡片 ---------- */
.feature-card{
  height:100%;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  display:flex;flex-direction:column;
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.4);box-shadow:var(--sh-glow)}
.feature-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature-card:hover .feature-thumb img{transform:scale(1.05)}
.feature-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.1),rgba(5,8,15,.72))}
.feature-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge-tag{
  display:inline-flex;align-self:flex-start;align-items:center;
  padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);border:1px solid rgba(33,199,216,.26);
}
.feature-body h3{font-size:19px;font-weight:600}
.feature-body .desc{font-size:14.5px;color:var(--t2);line-height:1.75}
.point-list{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.point-list li{position:relative;padding-left:18px;font-size:13.8px;color:var(--t3);line-height:1.7}
.point-list li::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;border-radius:50%;background:var(--brand)}

/* ---------- 场景条 ---------- */
.scene-band{background:var(--panel-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene-item{
  height:100%;padding:24px;border-radius:var(--r-md);
  background:rgba(10,16,32,.7);border:1px solid var(--line);border-left:3px solid var(--brand);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.scene-item:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.35);border-left-color:var(--accent)}
.scene-item h3{font-size:17px;margin-bottom:8px}
.scene-item p{font-size:14.2px;color:var(--t2);line-height:1.75}

/* ---------- 上手流程 ---------- */
.flow-wrap{display:grid;gap:0}
.flow-step{
  position:relative;padding:24px 0 24px 62px;border-bottom:1px dashed var(--line);
}
.flow-step:last-child{border-bottom:0}
.flow-num{
  position:absolute;left:0;top:24px;width:44px;height:44px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:17px;font-weight:700;color:var(--brand);
  background:var(--panel);border:1px solid rgba(33,199,216,.26);
}
.flow-step h3{font-size:17.5px;margin-bottom:8px}
.flow-step p{font-size:14.4px;color:var(--t2);line-height:1.78}

/* ---------- FAQ ---------- */
.faq-shell{
  max-width:860px;margin:0 auto;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  overflow:hidden;box-shadow:var(--sh-1);
}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;background:transparent;border:0;color:var(--t1);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q:hover{color:var(--brand)}
.faq-q .arrow{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid rgba(33,199,216,.35);position:relative;
  transition:transform .24s var(--ease),background .24s var(--ease);
}
.faq-q .arrow::before{
  content:"";position:absolute;left:6px;top:9px;width:8px;height:8px;
  border-right:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  transform:rotate(45deg) translate(-2px,-2px);
}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);background:rgba(33,199,216,.14)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 24px 22px;font-size:14.8px;color:var(--t2);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  border-radius:var(--r-lg);border:1px solid var(--glass-line);
  background:linear-gradient(120deg,rgba(14,74,120,.55),rgba(10,16,32,.9));
  padding:36px;display:grid;gap:26px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.22),rgba(255,122,47,0) 70%);
}
.cta-band h2{font-size:clamp(22px,3vw,30px);position:relative}
.cta-band p{margin-top:12px;color:var(--t2);font-size:15px;max-width:560px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}
.cta-note{margin-top:18px;font-size:13.4px;color:var(--t3);position:relative}

/* ---------- 继续浏览 ---------- */
.more-bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 24px;border-radius:var(--r-md);
  background:var(--panel);border:1px solid var(--line);
}
.more-bar strong{font-size:15.5px;font-weight:600}
.more-links{display:flex;flex-wrap:wrap;gap:10px}
.more-links a{
  display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--t2);background:rgba(255,255,255,.03);
  border:1px solid var(--line);transition:all .2s var(--ease);
}
.more-links a:hover{color:var(--brand);border-color:rgba(33,199,216,.4);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:var(--panel);border-top:1px solid var(--line);
  padding:64px 0 26px;position:relative;z-index:1;
}
.footer-top{display:grid;gap:36px;grid-template-columns:1fr}
.f-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:14px}
.f-col h4{font-size:14px;letter-spacing:.08em;color:var(--brand);margin-bottom:16px}
.f-col p{font-size:14px;color:var(--t2);line-height:1.8;max-width:340px}
.f-links{display:flex;flex-direction:column;gap:2px}
.f-links a{
  display:inline-flex;align-items:center;min-height:44px;font-size:14.2px;color:var(--t2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.f-links a:hover{color:var(--brand);transform:translateX(4px)}
.f-contact{display:flex;flex-direction:column;gap:10px;font-size:14.2px;color:var(--t2)}
.f-contact li{display:flex;gap:10px;align-items:baseline;line-height:1.7}
.f-contact strong{color:var(--t3);font-weight:500;flex:0 0 auto}
.f-qr{
  margin-top:6px;display:inline-flex;align-items:center;justify-content:center;
  min-height:76px;padding:0 18px;border-radius:var(--r-sm);
  border:1px dashed rgba(33,199,216,.35);color:var(--t3);font-size:13px;
  background:rgba(33,199,216,.06);
}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--t3);
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--brand);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1);cursor:pointer;opacity:0;visibility:hidden;
  transform:translateY(12px);transition:all .25s var(--ease);z-index:60;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(33,199,216,.45);box-shadow:var(--sh-glow)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:576px){
  .metrics{grid-template-columns:repeat(4,1fr)}
  .footer-top{grid-template-columns:repeat(2,1fr)}
  .flow-wrap{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-bottom:1px dashed var(--line);padding-right:24px}
}
@media (min-width:768px){
  .site-header{padding:0 20px}
  .page-banner{min-height:260px}
  .cta-band{padding:44px}
}
@media (min-width:992px){
  .nav-links{display:flex}
  .nav-actions{margin-left:0}
  .nav-toggle{display:none}
  .nav-drawer{display:none}
  .drawer-mask{display:none}
  .footer-top{grid-template-columns:1.4fr .8fr .8fr 1fr}
  .flow-wrap{grid-template-columns:repeat(4,1fr)}
  .flow-step{padding:0 22px 0 0;border-bottom:0;border-right:1px dashed var(--line)}
  .flow-step:last-child{border-right:0;padding-right:0}
  .flow-num{position:static;margin-bottom:16px}
  .flow-step{padding-left:0}
}
@media (min-width:1400px){
  .shell{max-width:1320px}
}
@media (max-width:575.98px){
  .shell{padding:0 16px}
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .nav-shell{min-height:56px;padding:6px 8px 6px 14px}
  .page-banner .banner-inner{padding:22px 18px}
  .cta-band{padding:24px}
  .faq-q{padding:18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .site-footer{margin-top:64px;padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#05080F;
  --panel:#0A1020;
  --panel-2:#0F1830;
  --glass:rgba(18,30,54,.55);
  --glass-line:rgba(140,190,255,.14);
  --brand:#21C7D8;
  --brand-deep:#0E4A78;
  --brand-soft:rgba(33,199,216,.14);
  --accent:#FF7A2F;
  --accent-hi:#FF9455;
  --t1:#EAF2FF;
  --t2:#A9B8D0;
  --t3:#6C7C99;
  --ok:#38D39F;
  --warn:#FF5C6C;
  --line:rgba(140,190,255,.12);
  --line-strong:rgba(140,190,255,.22);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(33,199,216,.22), 0 12px 32px rgba(33,199,216,.16);
  --sh-accent:0 10px 30px rgba(255,122,47,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"Inter","Rajdhani","SFMono-Regular",Consolas,monospace;
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--t2);
  --bs-primary:var(--brand);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:var(--brand);
  --bs-border-color:var(--line);
}
*,*::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:1.85;
  color:var(--t2);
  background:var(--bg);
  background-image:
    radial-gradient(900px 460px at 12% -8%, rgba(33,199,216,.16), transparent 65%),
    radial-gradient(700px 420px at 92% 4%, rgba(14,74,120,.42), transparent 68%);
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--accent-hi)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
::selection{background:rgba(33,199,216,.28);color:var(--t1)}

.shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:1400px){.shell{max-width:1320px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:1040;padding:16px 0 8px;pointer-events:none}
.nav-shell{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;pointer-events:none}
@media (min-width:1400px){.nav-shell{max-width:1320px}}
.nav-pill{
  pointer-events:auto;
  display:flex;align-items:center;gap:16px;
  min-height:64px;padding:8px 10px 8px 16px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--pill);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1), inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled .nav-pill{
  background:rgba(10,16,32,.86);
  border-color:var(--line-strong);
  box-shadow:0 14px 36px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:30px;height:30px;border-radius:10px;flex:0 0 30px;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 78%);
  box-shadow:0 0 0 1px rgba(33,199,216,.36), 0 8px 18px rgba(33,199,216,.24);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 8px auto auto;width:8px;height:8px;border-radius:3px;
  background:var(--accent);box-shadow:0 0 10px rgba(255,122,47,.75);
}
.brand-text{font-size:16px}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border-radius:var(--pill);
  color:var(--t2);font-size:14.5px;font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--t1);background:rgba(33,199,216,.10)}
.nav-links a.is-active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.26)}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border:0;border-radius:var(--pill);
  background:var(--accent);color:#12161F;font-size:14.5px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--sh-accent);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .15s var(--ease);
  cursor:pointer;
}
.btn-cta:hover{background:var(--accent-hi);color:#12161F;box-shadow:0 14px 38px rgba(255,122,47,.45)}
.btn-cta:active{transform:scale(.98)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--pill);
  background:rgba(18,30,54,.5);border:1px solid var(--glass-line);color:var(--t1);
  font-size:14.5px;font-weight:600;
  backdrop-filter:blur(12px) saturate(140%);
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.btn-ghost:hover{border-color:rgba(33,199,216,.5);color:var(--t1);transform:translateY(-2px)}
.nav-cta{margin-left:auto;white-space:nowrap}
.nav-toggle{
  margin-left:auto;width:44px;height:44px;border-radius:14px;flex:0 0 44px;
  background:rgba(18,30,54,.6);border:1px solid var(--glass-line);
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s var(--ease),opacity .25s var(--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{
  pointer-events:auto;
  max-width:1240px;margin:10px auto 0;
  background:rgba(10,16,32,.94);border:1px solid var(--line-strong);border-radius:24px;
  padding:14px;display:none;flex-direction:column;gap:6px;
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1);
}
.nav-drawer.is-open{display:flex}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:14px;
  color:var(--t2);font-size:15px;font-weight:500;
}
.nav-drawer a:hover,.nav-drawer a.is-active{background:var(--brand-soft);color:var(--brand)}
.nav-drawer .btn-cta{margin-top:6px;width:100%}
@media (min-width:992px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
  .nav-drawer{display:none !important}
}
@media (max-width:991.98px){
  .nav-cta{display:none}
  .nav-pill{min-height:56px;padding-left:14px}
}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;margin-top:20px;padding:56px 0 48px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.16;filter:saturate(90%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(5,8,15,.35) 0%, rgba(5,8,15,.86) 62%, var(--bg) 100%);
}
.article-hero .shell{position:relative;z-index:2}
.breadcrumb-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--t3);margin-bottom:22px;
}
.breadcrumb-row a{color:var(--t3)}
.breadcrumb-row a:hover{color:var(--brand)}
.breadcrumb-row .sep{color:rgba(108,124,153,.6)}
.breadcrumb-row .current{color:var(--t2);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--pill);
  background:var(--brand-soft);border:1px solid rgba(33,199,216,.3);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.08em;
}
.article-hero h1{
  margin:18px 0 0;max-width:900px;
  font-size:clamp(28px,4.4vw,48px);line-height:1.2;font-weight:800;letter-spacing:-.015em;color:var(--t1);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;
  font-size:13.5px;color:var(--t3);
}
.article-meta .m-item{display:inline-flex;align-items:center;gap:8px}
.article-meta .m-num{font-family:var(--font-num);letter-spacing:.04em;font-weight:600;color:var(--t2)}
.article-meta .dot{width:5px;height:5px;border-radius:50%;background:rgba(108,124,153,.5)}

/* ============ 主体布局 ============ */
.main-wrap{padding:48px 0 0}
.layout{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:992px){
  .layout{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px}
}
.col-main{min-width:0}
.col-side{min-width:0}

.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.reader{padding:30px 22px}
@media (min-width:768px){.reader{padding:44px 48px}}
.reader-inner{max-width:760px;margin:0 auto}

/* ============ 富文本正文 ============ */
.article-body{font-size:16px;line-height:1.85;color:var(--t2);word-wrap:break-word;overflow-wrap:break-word}
.article-body>*+*{margin-top:1.4em}
.article-body p{margin:0;color:var(--t2)}
.article-body h2{
  margin:2em 0 0;padding-left:14px;border-left:4px solid var(--brand);
  font-size:clamp(21px,2.4vw,27px);line-height:1.35;font-weight:700;color:var(--t1);letter-spacing:-.01em;
}
.article-body h3{margin:1.7em 0 0;font-size:19px;line-height:1.45;font-weight:600;color:var(--t1)}
.article-body h2+h3,.article-body h2+*{margin-top:1em}
.article-body strong{color:var(--t1);font-weight:700}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(33,199,216,.35)}
.article-body a:hover{color:var(--accent-hi);border-bottom-color:rgba(255,148,85,.5)}
.article-body ul,.article-body ol{margin:0;padding-left:1.5em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0}
.article-body li::marker{color:var(--brand);font-family:var(--font-num);font-weight:700}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:var(--glass);border-left:3px solid var(--accent);border-radius:var(--r-md);
  backdrop-filter:blur(16px) saturate(140%);
  color:var(--t1);
}
.article-body blockquote p{color:var(--t1)}
.article-body img{border-radius:16px;margin:1.6em auto;box-shadow:var(--sh-1)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--t3);margin-top:10px}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-body table{
  width:100%;border-collapse:collapse;min-width:520px;
  font-size:14.5px;
}
.article-body .table-scroll,.article-body table{max-width:100%}
.article-body table{display:table}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.article-body thead th{background:rgba(33,199,216,.08);color:var(--t1);font-weight:600;white-space:nowrap}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.article-body pre{
  background:#060B16;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;overflow-x:auto;font-size:14px;line-height:1.7;color:#CFE3FF;
  font-family:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  font-size:.92em;background:rgba(33,199,216,.12);color:var(--brand);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;color:inherit;padding:0;font-size:inherit}
.article-body .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md)}

/* 空态 */
.article-empty{padding:26px 0 6px;text-align:center}
.article-empty h2{margin:0 0 12px;font-size:24px;color:var(--t1)}
.article-empty p{margin:0 auto 24px;max-width:520px;color:var(--t2)}

/* ============ 尾部组件 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--pill);
  background:rgba(18,30,54,.6);border:1px solid var(--line);color:var(--t2);font-size:12.5px;letter-spacing:.04em;
}
.tag:hover{border-color:rgba(33,199,216,.42);color:var(--brand)}
.share-row{
  display:flex;align-items:center;gap:12px;margin-top:24px;padding-top:22px;
  border-top:1px solid var(--line);font-size:13px;color:var(--t3);
}
.share-row .icon-btn{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(18,30,54,.6);border:1px solid var(--line);color:var(--t2);font-size:13px;font-weight:600;
}
.share-row .icon-btn:hover{border-color:rgba(33,199,216,.45);color:var(--brand);transform:translateY(-2px)}
.nav-pair{display:grid;grid-template-columns:1fr;gap:16px;margin-top:34px}
@media (min-width:768px){.nav-pair{grid-template-columns:1fr 1fr}}
.nav-card{
  display:block;padding:18px 20px;border-radius:var(--r-md);
  background:var(--panel-2);border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-card:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.42);box-shadow:var(--sh-glow)}
.nav-card .nc-label{font-size:12px;letter-spacing:.08em;color:var(--t3)}
.nav-card .nc-title{margin-top:8px;font-size:16px;font-weight:600;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.nav-card .nc-desc{margin-top:6px;font-size:13.5px;color:var(--t3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.section-head{margin:56px 0 22px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px}
.section-head .sh-line{width:12px;height:3px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(33,199,216,.6)}
.section-head .sh-label{margin-top:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);text-transform:uppercase}
.section-head h2{margin:6px 0 0;font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--t1)}
.section-head .sh-more{font-size:13.5px;color:var(--t2);white-space:nowrap}
.section-head .sh-more:hover{color:var(--accent-hi)}

.rec-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.rec-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.45);box-shadow:var(--sh-glow)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:16px;margin:10px 10px 0}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-cover img{transform:scale(1.05)}
.card-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,0) 42%,rgba(5,8,15,.72) 100%)}
.card-cover .badge-cat{position:absolute;left:12px;top:12px;z-index:2}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:16.5px;font-weight:600;line-height:1.5;color:var(--t1);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-title{color:var(--brand)}
.card-desc{
  margin:0;font-size:13.8px;line-height:1.75;color:var(--t3);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line)}
.card-time{font-family:var(--font-num);font-size:12.5px;letter-spacing:.04em;color:var(--t3)}
.card-arrow{font-size:13px;color:var(--brand)}

.back-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}

/* ============ 侧栏 ============ */
.side-stack{display:flex;flex-direction:column;gap:20px}
.side-card{padding:22px}
.side-title{display:flex;align-items:center;gap:10px;margin:0 0 16px;font-size:15px;font-weight:700;color:var(--t1)}
.side-title::before{content:"";width:10px;height:3px;border-radius:2px;background:var(--brand);box-shadow:0 0 8px rgba(33,199,216,.6)}
.hot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.hot-list li+li{border-top:1px solid var(--line)}
.hot-list a{display:flex;gap:12px;padding:13px 0;color:var(--t2);font-size:14.2px;line-height:1.6}
.hot-list a:hover{color:var(--brand)}
.hot-list .no{font-family:var(--font-num);font-weight:700;color:var(--t3);flex:0 0 22px}
.hot-list li:nth-child(1) .no{color:var(--accent)}
.hot-list li:nth-child(2) .no{color:var(--brand)}
.hot-list li:nth-child(3) .no{color:var(--brand)}

.enroll-card{
  padding:24px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(33,199,216,.14),rgba(10,16,32,.9) 58%);
  border:1px solid rgba(33,199,216,.28);
  box-shadow:var(--sh-glow);
}
.enroll-card h3{margin:0 0 10px;font-size:18px;color:var(--t1);font-weight:700}
.enroll-card p{margin:0 0 18px;font-size:13.8px;line-height:1.75;color:var(--t2)}
.enroll-card .btn-cta{width:100%}
.enroll-note{margin-top:14px;font-size:12.5px;color:var(--t3);text-align:center}

.cat-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.cat-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:10px 14px;border-radius:var(--r-md);
  background:rgba(18,30,54,.45);border:1px solid var(--line);color:var(--t2);font-size:14px;
}
.cat-list a:hover{color:var(--t1);border-color:rgba(33,199,216,.42);background:rgba(33,199,216,.1)}
.cat-list .arrow{color:var(--brand);font-size:13px}

/* 移动端侧栏折叠 */
.side-toggle{display:none}
.side-panel{display:flex;flex-direction:column;gap:20px}
@media (max-width:991.98px){
  .side-toggle{
    display:flex;align-items:center;justify-content:space-between;width:100%;
    min-height:52px;padding:0 20px;margin-bottom:8px;
    background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);
    color:var(--t1);font-size:15px;font-weight:600;cursor:pointer;
  }
  .side-toggle .st-mark{color:var(--brand);font-weight:700}
  .side-panel{display:none}
  .side-panel.is-open{display:flex}
}

/* ============ 底部 CTA 条 ============ */
.cta-band{margin:72px 0 0;padding:0 0 8px}
.cta-inner{
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  padding:30px 26px;border-radius:24px;
  background:linear-gradient(120deg,rgba(14,74,120,.55),rgba(10,16,32,.92) 62%);
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-1);
}
@media (min-width:992px){
  .cta-inner{grid-template-columns:1.6fr 1fr;padding:38px 44px}
}
.cta-inner h2{margin:0 0 10px;font-size:clamp(20px,2.6vw,28px);color:var(--t1);font-weight:700}
.cta-inner p{margin:0;color:var(--t2);font-size:14.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (min-width:992px){.cta-actions{justify-content:flex-end}}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;border-top:1px solid var(--line);background:rgba(6,10,20,.9)}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 34px}
@media (min-width:576px){.footer-top{grid-template-columns:1fr 1fr}}
@media (min-width:992px){.footer-top{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px}}
.f-brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:16px}
.f-col p{margin:14px 0 0;font-size:13.8px;line-height:1.8;color:var(--t3);max-width:340px}
.f-col h4{margin:0 0 14px;font-size:14px;color:var(--t1);font-weight:600;letter-spacing:.02em}
.f-links{display:flex;flex-direction:column;gap:2px}
.f-links a{display:inline-flex;align-items:center;min-height:38px;color:var(--t3);font-size:14px}
.f-links a:hover{color:var(--brand);transform:translateX(3px)}
.f-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;font-size:14px;color:var(--t3)}
.f-contact strong{display:block;font-size:12px;letter-spacing:.08em;color:var(--t1);font-weight:600;margin-bottom:2px}
.f-qr{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:52px;padding:0 18px;border-radius:var(--r-md);
  background:rgba(18,30,54,.6);border:1px dashed var(--glass-line);color:var(--t2);font-size:13px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 34px;border-top:1px solid var(--line);font-size:12.8px;color:var(--t3);
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:1030;
  width:48px;height:48px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--t1);font-size:16px;cursor:pointer;
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:rgba(33,199,216,.5);color:var(--brand)}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg:#05080F;
  --panel:#0A1020;
  --panel-2:#0F1830;
  --glass:rgba(18,30,54,.55);
  --glass-line:rgba(140,190,255,.14);
  --brand:#21C7D8;
  --brand-deep:#0E4A78;
  --brand-soft:rgba(33,199,216,.14);
  --accent:#FF7A2F;
  --accent-hi:#FF9455;
  --t1:#EAF2FF;
  --t2:#A9B8D0;
  --t3:#6C7C99;
  --ok:#38D39F;
  --warn:#FF5C6C;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 18px 48px rgba(0,0,0,.45);
  --sh-glow:0 0 0 1px rgba(33,199,216,.22),0 12px 32px rgba(33,199,216,.16);
  --sh-accent:0 10px 30px rgba(255,122,47,.32);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","Rajdhani","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --bs-primary:#21C7D8;
  --bs-primary-rgb:33,199,216;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF2FF;
  --bs-link-color:#21C7D8;
  --bs-link-hover-color:#6FE0EC;
  --bs-border-color:rgba(140,190,255,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:-20% 0 auto 0;
  height:70vh;
  background:
    radial-gradient(60% 55% at 20% 0%,rgba(33,199,216,.16),transparent 70%),
    radial-gradient(45% 45% at 88% 6%,rgba(14,74,120,.5),transparent 72%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s cubic-bezier(.2,.7,.3,1)}
a:hover{color:#6FE0EC}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--t1)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(33,199,216,.28);color:#F4FAFF}

.shell{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
@media(min-width:1400px){.shell{max-width:1320px}}
@media(max-width:575.98px){.shell{padding:0 16px}}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.04em;font-weight:600}

/* ============ 导航 ============ */
.site-head{
  position:sticky;
  top:16px;
  z-index:60;
  padding:0 20px;
}
@media(max-width:575.98px){.site-head{padding:0 16px;top:12px}}
.head-shell{max-width:1240px;margin:0 auto}
@media(min-width:1400px){.head-shell{max-width:1320px}}
.nav-pill{
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  padding:0 12px 0 20px;
  border-radius:var(--r-pill);
  background:var(--glass);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-1);
  transition:background .25s ease,box-shadow .25s ease,height .25s ease;
}
.nav-pill.is-scrolled{
  background:rgba(9,15,30,.88);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 14px 36px rgba(0,0,0,.5);
}
@media(max-width:767.98px){.nav-pill{height:56px;padding:0 10px 0 14px;gap:10px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-deep) 78%);
  box-shadow:0 0 0 1px rgba(33,199,216,.4),0 6px 18px rgba(33,199,216,.28);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px 8px;border-radius:3px;
  background:rgba(5,8,15,.72);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
@media(max-width:575.98px){.brand-text{font-size:15px}}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
@media(min-width:992px){.nav-links{display:flex}}
.nav-links a{
  display:inline-flex;align-items:center;height:44px;padding:0 16px;
  border-radius:var(--r-pill);color:var(--t2);font-size:15px;font-weight:500;
  white-space:nowrap;transition:background .2s cubic-bezier(.2,.7,.3,1),color .2s cubic-bezier(.2,.7,.3,1);
}
.nav-links a:hover{color:var(--t1);background:rgba(140,190,255,.08)}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.24)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:992px){.nav-actions{margin-left:0}}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:0;cursor:pointer;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,var(--accent-hi),var(--accent));
  color:#1B0E04;font-size:15px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--sh-accent);
  transition:transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s cubic-bezier(.2,.7,.3,1),filter .2s;
}
.btn-accent:hover{color:#1B0E04;filter:brightness(1.06);box-shadow:0 14px 38px rgba(255,122,47,.42)}
.btn-accent:active{transform:scale(.98)}
.btn-sm-pill{min-height:40px;padding:0 18px;font-size:14px}
@media(max-width:991.98px){.nav-actions .btn-sm-pill{display:none}}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;cursor:pointer;
  border-radius:var(--r-pill);
  background:rgba(140,190,255,.06);
  border:1px solid var(--glass-line);
  color:var(--t1);font-size:15px;font-weight:600;
  transition:transform .2s cubic-bezier(.2,.7,.3,1),border-color .2s,background .2s,box-shadow .2s;
}
.btn-ghost:hover{color:var(--t1);border-color:rgba(33,199,216,.5);background:rgba(33,199,216,.1);transform:translateY(-2px);box-shadow:var(--sh-glow)}
.btn-ghost:active{transform:scale(.98)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;min-height:44px;
  color:var(--brand);font-size:15px;font-weight:600;
}
.btn-text:hover{gap:10px}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-pill);
  background:rgba(140,190,255,.07);border:1px solid var(--glass-line);
  color:var(--t1);cursor:pointer;
}
@media(min-width:992px){.burger{display:none}}
.burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.62);opacity:0;pointer-events:none;
  transition:opacity .28s ease;z-index:70;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  transform:translateX(104%);transition:transform .3s cubic-bezier(.2,.7,.3,1);
  background:rgba(10,16,32,.94);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--glass-line);
  z-index:80;padding:22px 20px;display:flex;flex-direction:column;gap:8px;
}
.drawer.open{transform:translateX(0)}
.drawer-title{font-size:13px;letter-spacing:.08em;color:var(--t3);margin-bottom:8px}
.drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-md);
  color:var(--t2);font-size:16px;font-weight:500;
}
.drawer a:hover{background:rgba(140,190,255,.08);color:var(--t1)}
.drawer a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.24)}
.drawer .btn-accent{margin-top:16px;width:100%}

/* ============ 页头区 ============ */
.cat-hero{padding:56px 0 40px;position:relative}
@media(min-width:768px){.cat-hero{padding:72px 0 56px}}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);letter-spacing:.04em;margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:rgba(108,124,153,.6)}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media(min-width:992px){.hero-grid{grid-template-columns:1.12fr .88fr;gap:56px}}
.badge-soft{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 13px;border-radius:var(--r-pill);
  background:var(--brand-soft);border:1px solid rgba(33,199,216,.28);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.08em;line-height:1.4;
}
.badge-soft i{width:6px;height:6px;border-radius:50%;background:var(--brand);display:block;box-shadow:0 0 10px rgba(33,199,216,.9)}
h1.hero-title{
  font-size:clamp(28px,5vw,56px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin:20px 0 18px;
}
.hero-lead{color:var(--t2);font-size:16px;line-height:1.85;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:36px;padding-top:26px;border-top:1px solid rgba(140,190,255,.12);
}
.stat-num{font-family:var(--font-num);font-size:clamp(22px,3vw,30px);font-weight:700;letter-spacing:.04em;color:var(--t1);line-height:1.1}
.stat-num em{font-style:normal;font-size:14px;color:var(--brand);margin-left:4px;font-weight:600}
.stat-cap{font-size:13px;color:var(--t3);line-height:1.7;margin-top:6px}
.hero-visual{
  border-radius:var(--r-lg);
  padding:16px;
  background:var(--glass);
  border:1px solid var(--glass-line);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-2);
}
.hero-visual img{border-radius:var(--r-md);width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-skeleton{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.sk-line{height:10px;border-radius:6px;background:linear-gradient(90deg,rgba(33,199,216,.28),rgba(140,190,255,.08))}
.sk-line.w1{width:78%}
.sk-line.w2{width:54%}
.sk-line.w3{width:64%}
.sk-chips{display:flex;gap:8px;margin-top:6px}
.sk-chip{height:22px;width:56px;border-radius:var(--r-pill);background:rgba(140,190,255,.12);border:1px solid rgba(140,190,255,.14)}
.sk-chip.accent{background:rgba(255,122,47,.24);border-color:rgba(255,122,47,.4)}

/* ============ 索引主体 ============ */
.index-body{padding:24px 0 64px}
@media(min-width:768px){.index-body{padding:32px 0 96px}}
.index-wrap{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:992px){.index-wrap{grid-template-columns:3.9fr 8.1fr;gap:36px;align-items:start}}
.toc-mobile-btn{
  display:flex;align-items:center;justify-content:space-between;width:100%;
  min-height:52px;padding:0 18px;cursor:pointer;
  border-radius:var(--r-md);
  background:var(--panel-2);border:1px solid var(--glass-line);color:var(--t1);
  font-size:15px;font-weight:600;
}
.toc-mobile-btn .caret{color:var(--brand);transition:transform .24s ease}
.toc.is-open .toc-mobile-btn .caret{transform:rotate(180deg)}
@media(min-width:992px){.toc-mobile-btn{display:none}}
.toc-inner{
  background:var(--panel);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  padding:22px;
  max-height:0;
  overflow:hidden;
  opacity:0;
  transition:max-height .3s ease,opacity .3s ease,margin .3s ease;
  margin-top:0;
}
.toc.is-open .toc-inner{max-height:640px;opacity:1;margin-top:12px}
@media(min-width:992px){
  .toc-inner{max-height:none;opacity:1;margin-top:0;position:sticky;top:96px;padding:26px}
}
.toc-title{font-size:13px;letter-spacing:.08em;color:var(--t3);margin-bottom:16px}
.toc-list{display:flex;flex-direction:column;gap:4px}
.toc-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:0 14px;border-radius:var(--r-sm);
  color:var(--t2);font-size:15px;
  transition:background .2s cubic-bezier(.2,.7,.3,1),color .2s,transform .2s;
}
.toc-list a:hover{background:rgba(140,190,255,.08);color:var(--t1);transform:translateX(3px)}
.toc-list a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.22)}
.toc-list a em{font-style:normal;font-family:var(--font-num);font-size:12px;color:var(--t3);letter-spacing:.04em}
.toc-list a.active em{color:var(--brand)}
.toc-note{margin-top:20px;padding-top:18px;border-top:1px solid rgba(140,190,255,.12);font-size:13px;color:var(--t3);line-height:1.75}

.row-group{padding-top:12px}
.row-group + .row-group{margin-top:38px;padding-top:30px;border-top:1px solid rgba(140,190,255,.1)}
.group-head{display:flex;align-items:baseline;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.group-head h2{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;letter-spacing:-.01em;
  padding-left:12px;position:relative;
}
.group-head h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(33,199,216,.2));
}
.group-tag{font-size:13px;color:var(--t3);letter-spacing:.04em}
.row-list{
  background:var(--panel);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  overflow:hidden;
}
.row-item{
  display:grid;
  grid-template-columns:44px minmax(0,1fr) auto;
  align-items:center;
  gap:6px 14px;
  padding:16px 18px;
  border-bottom:1px solid rgba(140,190,255,.08);
  color:var(--t1);
  transition:background .2s cubic-bezier(.2,.7,.3,1),transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s;
}
.row-item:last-child{border-bottom:0}
.row-item:hover{
  background:rgba(33,199,216,.06);
  transform:translateX(4px);
  box-shadow:inset 3px 0 0 rgba(33,199,216,.55);
  color:var(--t1);
}
.row-no{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--t3);
}
.row-item:hover .row-no{color:var(--brand)}
.row-title{font-size:16px;font-weight:600;line-height:1.5;min-width:0}
.row-badge{
  justify-self:end;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.4;letter-spacing:.06em;
  background:var(--brand-soft);border:1px solid rgba(33,199,216,.26);color:var(--brand);
  white-space:nowrap;
}
.row-badge.warm{background:rgba(255,122,47,.14);border-color:rgba(255,122,47,.34);color:var(--accent-hi)}
.row-time{
  grid-column:2 / 4;
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.04em;color:var(--t3);
}
.row-arrow{display:none;color:var(--t3);font-size:16px;transition:transform .2s,color .2s}
.row-item:hover .row-arrow{color:var(--brand);transform:translateX(3px)}
@media(min-width:768px){
  .row-item{grid-template-columns:52px minmax(0,1fr) auto 104px 22px;gap:16px;padding:18px 22px}
  .row-time{grid-column:auto;text-align:right}
  .row-arrow{display:block}
}

/* ============ 字段说明 ============ */
.section{padding:64px 0}
@media(min-width:768px){.section{padding:96px 0}}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.08em;color:var(--brand);margin-bottom:14px;font-weight:600;
}
.sec-kicker::before{content:"";width:12px;height:2px;border-radius:2px;background:var(--brand);display:block}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:700;letter-spacing:-.02em;line-height:1.25}
.sec-head p{color:var(--t2);margin-top:14px;font-size:16px}
.field-card{
  height:100%;
  background:var(--panel);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  padding:24px 22px;
  transition:border-color .2s,transform .2s cubic-bezier(.2,.7,.3,1),box-shadow .2s;
}
.field-card:hover{border-color:rgba(33,199,216,.4);transform:translateY(-4px);box-shadow:var(--sh-glow)}
.field-ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);border:1px solid rgba(33,199,216,.26);color:var(--brand);
  font-family:var(--font-num);font-weight:700;font-size:15px;margin-bottom:16px;
}
.field-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.field-card p{color:var(--t2);font-size:14.5px;line-height:1.8}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
.step{
  position:relative;
  background:var(--panel-2);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  padding:26px 22px 24px;
  transition:border-color .2s,transform .2s cubic-bezier(.2,.7,.3,1);
}
.step:hover{border-color:rgba(33,199,216,.36);transform:translateY(-4px)}
.step-no{
  font-family:var(--font-num);font-size:34px;font-weight:700;letter-spacing:.04em;
  color:rgba(33,199,216,.32);line-height:1;margin-bottom:14px;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step p{color:var(--t2);font-size:14.5px;line-height:1.8}

/* ============ 覆盖指标 ============ */
.cover-band{
  border-radius:var(--r-lg);
  border:1px solid var(--glass-line);
  background:linear-gradient(120deg,rgba(14,74,120,.5),rgba(10,16,32,.9) 62%);
  padding:32px 26px;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px;
}
@media(min-width:768px){.cover-band{grid-template-columns:repeat(4,minmax(0,1fr));padding:36px 34px}}
.cover-item .stat-num{font-size:clamp(24px,3vw,32px)}
.cover-item .stat-cap{font-size:13.5px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-box{
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid rgba(140,190,255,.1)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 24px;cursor:pointer;
  background:transparent;border:0;text-align:left;color:var(--t1);
  font-size:16px;font-weight:600;line-height:1.6;
  transition:background .2s;
}
.faq-q:hover{background:rgba(140,190,255,.06)}
.faq-q .caret{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);border:1px solid rgba(33,199,216,.3);
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.faq-item.open .faq-q .caret{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a-inner{padding:0 24px 22px;color:var(--t2);font-size:15px;line-height:1.9}

/* ============ CTA ============ */
.cta-band{
  border-radius:var(--r-lg);
  border:1px solid var(--glass-line);
  background:
    linear-gradient(90deg,rgba(5,8,15,.9),rgba(5,8,15,.72)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding:36px 26px;
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
}
@media(min-width:992px){.cta-band{grid-template-columns:1.3fr .7fr;padding:44px 40px;gap:40px}}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;letter-spacing:-.01em}
.cta-band p{color:var(--t2);margin-top:12px;font-size:15px;max-width:52ch}
.cta-side{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
@media(min-width:992px){.cta-side{align-items:flex-end}}
.cta-side .btn-accent{width:100%;min-height:52px;font-size:16px}
@media(min-width:992px){.cta-side .btn-accent{width:auto;padding:0 34px}}
.cta-hint{font-size:13px;color:var(--t3)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;
  border-top:1px solid rgba(140,190,255,.12);
  background:linear-gradient(180deg,rgba(10,16,32,.6),rgba(5,8,15,.98));
  padding:56px 0 28px;
}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:576px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:992px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}}
.f-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;margin-bottom:14px}
.f-col h4{font-size:14px;font-weight:600;color:var(--t1);letter-spacing:.04em;margin-bottom:16px}
.f-col p{color:var(--t3);font-size:14px;line-height:1.8;max-width:36ch}
.f-links{display:flex;flex-direction:column;gap:10px}
.f-links a{color:var(--t2);font-size:14.5px;display:inline-flex;align-items:center;min-height:28px}
.f-links a:hover{color:var(--brand)}
.f-contact{display:flex;flex-direction:column;gap:12px}
.f-contact li{color:var(--t2);font-size:14.5px;line-height:1.7}
.f-contact strong{color:var(--t3);font-weight:500;display:block;font-size:13px;letter-spacing:.04em}
.f-qr{
  display:inline-flex;align-items:center;justify-content:center;
  padding:14px 18px;border-radius:var(--r-md);
  background:rgba(140,190,255,.06);border:1px dashed rgba(140,190,255,.24);
  color:var(--t3);font-size:13px;
}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(140,190,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  color:var(--t3);font-size:13px;line-height:1.7;
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:50;
  width:48px;height:48px;border-radius:50%;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--brand);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--sh-1);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .24s ease,transform .24s ease,box-shadow .2s;
  font-size:16px;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{box-shadow:var(--sh-glow);color:var(--t1)}

/* ============ 入场动画 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s cubic-bezier(.2,.7,.3,1),transform .5s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
/* Bootstrap 覆盖 */
.btn{--bs-btn-border-radius:var(--r-pill)}
.card{background:var(--panel);border-color:var(--glass-line);border-radius:var(--r-lg);color:var(--t1)}
.form-control{
  background:var(--panel-2);border:1px solid var(--glass-line);color:var(--t1);
  border-radius:var(--r-sm);min-height:48px;
}
.form-control:focus{background:var(--panel-2);color:var(--t1);border-color:var(--brand);box-shadow:0 0 0 4px rgba(33,199,216,.18)}
.form-control::placeholder{color:var(--t3)}

/* roulang page: category3 */
:root{
  --bg:#05080F;
  --panel:#0A1020;
  --panel-2:#0F1830;
  --glass:rgba(18,30,54,.55);
  --glass-line:rgba(140,190,255,.14);
  --brand:#21C7D8;
  --brand-deep:#0E4A78;
  --brand-soft:rgba(33,199,216,.14);
  --accent:#FF7A2F;
  --accent-hi:#FF9455;
  --t1:#EAF2FF;
  --t2:#A9B8D0;
  --t3:#6C7C99;
  --ok:#38D39F;
  --warn:#FF5C6C;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-glow:0 0 0 1px rgba(33,199,216,.22),0 12px 32px rgba(33,199,216,.16);
  --sh-accent:0 10px 30px rgba(255,122,47,.32);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#21C7D8;
  --bs-body-bg:#05080F;
  --bs-body-color:#EAF2FF;
  --bs-border-color:rgba(140,190,255,.14);
  --bs-link-color:#21C7D8;
  --bs-link-hover-color:#FF9455;
  --bs-font-sans-serif:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(33,199,216,.16), transparent 62%),
    radial-gradient(700px 460px at 4% 12%, rgba(14,74,120,.30), transparent 60%),
    var(--bg);
  color:var(--t1);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent-hi);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.container-x{max-width:1320px;}}
.mono{font-family:"Inter","Rajdhani",ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.04em;font-weight:600;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:16px;z-index:80;padding:0 20px;}
.nav-pill{
  max-width:1240px;margin:0 auto;height:64px;display:flex;align-items:center;gap:18px;
  padding:0 12px 0 18px;border-radius:999px;
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled .nav-pill{background:rgba(11,19,36,.86);box-shadow:0 12px 34px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.07);}
@media (min-width:1400px){.nav-pill{max-width:1320px;}}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;font-size:16px;white-space:nowrap;}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:26px;height:26px;border-radius:9px;flex:none;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep) 62%,#123a5c);
  box-shadow:0 0 0 1px rgba(33,199,216,.35),0 6px 16px rgba(33,199,216,.28);
  position:relative;
}
.brand-mark::after{content:"";position:absolute;inset:7px 7px 7px 7px;border-radius:3px;background:rgba(5,8,15,.72);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:999px;
  color:var(--t2);font-size:15px;transition:all .2s var(--ease);white-space:nowrap;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--brand);background:var(--brand-soft);box-shadow:inset 0 0 0 1px rgba(33,199,216,.28);}
.nav-side{display:flex;align-items:center;gap:10px;margin-left:12px;}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:0;border-radius:999px;
  background:linear-gradient(180deg,var(--accent-hi),var(--accent));
  color:#1A0C03;font-weight:700;font-size:15px;letter-spacing:.01em;
  box-shadow:var(--sh-accent);cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-cta:hover{filter:brightness(1.06);box-shadow:0 14px 38px rgba(255,122,47,.42);transform:translateY(-2px);color:#1A0C03;}
.btn-cta:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:999px;
  background:rgba(255,255,255,.03);border:1px solid var(--glass-line);
  color:var(--t1);font-weight:600;font-size:15px;cursor:pointer;
  transition:all .2s var(--ease);
}
.btn-ghost:hover{border-color:rgba(33,199,216,.5);color:var(--brand);transform:translateY(-2px);background:rgba(33,199,216,.08);}
.btn-ghost:active{transform:scale(.98);}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--brand);}
.link-more i{transition:transform .2s var(--ease);}
.link-more:hover i{transform:translateX(4px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:999px;border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);color:var(--t1);align-items:center;justify-content:center;
  font-size:17px;cursor:pointer;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.66);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);z-index:95;
  background:rgba(10,16,32,.94);border-left:1px solid var(--glass-line);
  backdrop-filter:blur(16px) saturate(140%);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:22px 20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-head span{font-weight:700;}
.drawer-close{width:44px;height:44px;border-radius:999px;border:1px solid var(--glass-line);background:transparent;color:var(--t1);cursor:pointer;}
.drawer a.d-link{
  display:flex;align-items:center;height:52px;padding:0 16px;border-radius:var(--r-md);
  color:var(--t2);font-size:16px;border:1px solid transparent;
}
.drawer a.d-link:hover{background:rgba(255,255,255,.05);color:var(--t1);}
.drawer a.d-link.active{color:var(--brand);background:var(--brand-soft);border-color:rgba(33,199,216,.3);}
.drawer .btn-cta{margin-top:16px;width:100%;}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--brand);text-transform:uppercase;font-weight:700;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;display:inline-block;}
.sec-title{font-size:clamp(24px,3vw,36px);line-height:1.25;margin-top:10px;}
.sec-desc{color:var(--t2);font-size:15px;margin-top:10px;max-width:660px;}
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(33,199,216,.3);
}
.badge-tag.accent{color:var(--accent);background:rgba(255,122,47,.12);border-color:rgba(255,122,47,.32);}

/* ---------- 面包屑页头 ---------- */
.page-head{padding:34px 0 8px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);flex-wrap:wrap;}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:10px;}
.page-head-line{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;}
.page-head-line h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;}

/* ---------- 瀑布式亮点卡 ---------- */
.masonry{display:grid;grid-template-columns:1fr;gap:24px;}
.case-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--panel);
  border:1px solid var(--glass-line);box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(33,199,216,.42);box-shadow:var(--sh-glow);}
.case-media{position:relative;overflow:hidden;}
.case-media.r43{aspect-ratio:4/3;}
.case-media.r169{aspect-ratio:16/9;}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.case-card:hover .case-media img{transform:scale(1.05);}
.case-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,15,.06) 30%,rgba(5,8,15,.88) 100%);}
.case-body{position:absolute;left:0;right:0;bottom:0;padding:22px;z-index:2;}
.case-body h3{font-size:19px;line-height:1.4;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.case-body p{color:var(--t2);font-size:14px;line-height:1.7;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 精彩片段横向滚动 ---------- */
.snap-strip{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 20px;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;
}
.snap-strip::-webkit-scrollbar{height:6px;}
.snap-strip::-webkit-scrollbar-thumb{background:rgba(33,199,216,.35);border-radius:99px;}
.snap-strip::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:99px;}
.snap-card{
  flex:0 0 300px;scroll-snap-align:start;border-radius:var(--r-lg);padding:20px;
  background:var(--panel-2);border:1px solid rgba(33,199,216,.24);
  box-shadow:0 0 0 1px rgba(33,199,216,.16),0 10px 26px rgba(33,199,216,.12);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.snap-card:hover{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(33,199,216,.4),0 16px 36px rgba(33,199,216,.2);}
.snap-ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:18px;margin-bottom:16px;
  box-shadow:inset 0 0 0 1px rgba(33,199,216,.28);
}
.snap-card h3{font-size:17px;line-height:1.45;}
.snap-card p{color:var(--t2);font-size:14px;line-height:1.7;margin-top:8px;}
.snap-meta{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:12px;color:var(--t3);}

/* ---------- 问答双列 ---------- */
.qa-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.qa-item{
  background:var(--panel);border:1px solid var(--glass-line);border-radius:var(--r-lg);
  padding:24px;transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.qa-item:hover{border-color:rgba(33,199,216,.4);transform:translateY(-4px);}
.qa-q{display:flex;gap:12px;align-items:flex-start;}
.qa-q i{color:var(--brand);font-size:17px;margin-top:5px;flex:none;}
.qa-q h3{font-size:17px;line-height:1.5;}
.qa-a{color:var(--t2);font-size:15px;line-height:1.85;margin-top:12px;padding-left:29px;}

/* ---------- 底部左右分栏收尾 ---------- */
.finish{display:grid;grid-template-columns:1fr;gap:32px;align-items:start;}
.finish-left h1{font-size:clamp(28px,5vw,50px);line-height:1.15;letter-spacing:-.02em;font-weight:800;}
.finish-left h1 em{font-style:normal;color:var(--brand);}
.finish-left .lead{color:var(--t2);font-size:16px;line-height:1.85;margin-top:18px;max-width:620px;}
.point-list{margin-top:26px;display:grid;gap:12px;}
.point-list li{display:flex;gap:12px;align-items:flex-start;color:var(--t2);font-size:15px;}
.point-list li i{color:var(--ok);margin-top:5px;flex:none;}
.cta-card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;padding:30px;
  background:linear-gradient(180deg,rgba(15,24,48,.94),rgba(10,16,32,.96));
  border:1px solid var(--glass-line);box-shadow:var(--sh-1);
}
.cta-card::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-card::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),rgba(255,122,47,0));}
.cta-inner{position:relative;z-index:2;}
.cta-card h3{font-size:21px;line-height:1.4;}
.cta-card p{color:var(--t2);font-size:14.5px;line-height:1.8;margin-top:10px;}
.cta-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0;}
.cta-metrics div{background:rgba(255,255,255,.03);border:1px solid var(--glass-line);border-radius:var(--r-md);padding:14px 12px;text-align:center;}
.cta-metrics b{display:block;font-size:20px;color:var(--accent);font-family:"Inter","Rajdhani",monospace;letter-spacing:.04em;}
.cta-metrics span{font-size:12px;color:var(--t3);}
.cta-card .btn-cta{width:100%;}
.cta-card .btn-ghost{width:100%;margin-top:10px;}
.cta-note{font-size:12.5px;color:var(--t3);margin-top:14px;text-align:center;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:40px;border-top:1px solid var(--glass-line);background:linear-gradient(180deg,rgba(10,16,32,.7),rgba(5,8,15,.96));padding:64px 0 28px;}
.footer-top{display:grid;grid-template-columns:1fr;gap:36px;}
.f-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--t1);}
.f-col p{color:var(--t2);font-size:14px;line-height:1.8;margin-top:14px;max-width:320px;}
.f-col h4{font-size:14px;letter-spacing:.06em;color:var(--t1);margin-bottom:16px;}
.f-links{display:flex;flex-direction:column;gap:10px;}
.f-links a{color:var(--t2);font-size:14.5px;}
.f-links a:hover{color:var(--brand);transform:translateX(3px);display:inline-block;}
.f-contact{display:flex;flex-direction:column;gap:12px;}
.f-contact li{color:var(--t2);font-size:14px;display:flex;gap:10px;}
.f-contact strong{color:var(--t3);font-weight:500;flex:none;min-width:60px;}
.f-qr{
  width:96px;height:96px;border-radius:var(--r-sm);border:1px dashed var(--glass-line);
  display:flex;align-items:center;justify-content:center;text-align:center;
  font-size:12px;color:var(--t3);padding:8px;background:rgba(255,255,255,.02);
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--glass-line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.to-top{
  position:fixed;right:20px;bottom:24px;width:48px;height:48px;border-radius:999px;z-index:70;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  background:var(--glass);border:1px solid var(--glass-line);color:var(--t1);
  backdrop-filter:blur(16px) saturate(140%);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .25s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{color:var(--brand);border-color:rgba(33,199,216,.45);}

/* 入场动效 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 断点 ---------- */
@media (min-width:576px){
  .qa-grid{grid-template-columns:1fr 1fr;}
  .cta-metrics{grid-template-columns:repeat(3,1fr);}
}
@media (min-width:768px){
  .masonry{grid-template-columns:1fr 1fr;}
  .footer-top{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;}
  .section{padding:88px 0;}
}
@media (min-width:992px){
  .finish{grid-template-columns:1.15fr .85fr;gap:40px;}
  .snap-card{flex:0 0 330px;}
}
@media (min-width:1200px){
  .section{padding:96px 0;}
}
@media (max-width:991.98px){
  .nav-links,.nav-side .btn-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-pill{height:56px;padding:0 10px 0 16px;}
  .brand{font-size:15px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .site-header{padding:0 12px;top:10px;}
  .case-body{padding:18px;}
  .cta-card{padding:22px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}