/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-2:#0D1626;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --blur:14px;
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --shadow-card:0 20px 48px rgba(3,8,20,.55);
  --shadow-glow:0 24px 60px rgba(43,217,232,.16);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 8% -6%, rgba(43,217,232,.12), transparent 62%),
    radial-gradient(820px 560px at 100% 0%, rgba(122,108,255,.10), transparent 64%);
  background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 0%, #000 28%, transparent 78%);
  mask-image:radial-gradient(circle at 50% 0%, #000 28%, transparent 78%);
  opacity:.5;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:700;line-height:1.3;text-wrap:balance}
p{margin:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(43,217,232,.3);color:var(--t-1)}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
@media (min-width:1440px){:root{--container:1280px}}
.section{position:relative;padding-block:88px}
.section--alt{background:var(--bg-1)}
.section--divider::before{
  content:"";
  position:absolute;
  inset-inline:0;
  top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.25),transparent);
}
main{position:relative;z-index:1}

.sec-head{max-width:720px;margin-bottom:44px}
.sec-head--center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-primary);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-primary);box-shadow:0 0 10px rgba(43,217,232,.7)}
.sec-head h2{font-size:clamp(22px,2.6vw,34px);margin-bottom:14px}
.sec-head p{color:var(--t-2);font-size:16px;line-height:1.85}
.sec-head--center .eyebrow::before{display:none}
.sec-head--center .eyebrow{padding:6px 14px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none}
.btn:active{transform:translateY(1px)}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),#37b6f0);color:#04121a;box-shadow:0 12px 30px rgba(43,217,232,.28)}
.btn--primary:hover{box-shadow:0 18px 42px rgba(43,217,232,.44);transform:translateY(-2px)}
.btn--ghost{background:var(--panel);border-color:var(--line);color:var(--t-1);-webkit-backdrop-filter:blur(var(--blur));backdrop-filter:blur(var(--blur))}
.btn--ghost:hover{border-color:var(--line-strong);background:var(--panel-strong);transform:translateY(-2px)}
.btn--accent{background:linear-gradient(135deg,var(--c-accent),#ff6f3d);color:#1a0a02;box-shadow:0 12px 30px rgba(255,138,61,.24)}
.btn--accent:hover{box-shadow:0 18px 42px rgba(255,138,61,.4);transform:translateY(-2px)}
.btn--block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:14px;font-weight:600;transition:gap .2s var(--ease)}
.link-arrow:hover{gap:10px}
.link-arrow svg{width:16px;height:16px}

/* ============ 公告条 ============ */
.notice{
  position:relative;z-index:70;
  background:linear-gradient(90deg,rgba(43,217,232,.14),rgba(122,108,255,.14));
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.notice__inner{display:flex;align-items:center;gap:12px;min-height:40px;padding-block:8px}
.notice__tag{
  flex:none;background:var(--c-accent);color:#1a0a02;font-size:12px;font-weight:700;
  padding:2px 10px;border-radius:999px;
}
.notice__text{color:var(--t-1);font-size:14px;line-height:1.6}
.notice__close{
  margin-left:auto;flex:none;width:28px;height:28px;border-radius:8px;color:var(--t-2);
  display:grid;place-items:center;cursor:pointer;transition:background .2s var(--ease),color .2s var(--ease);
}
.notice__close:hover{background:var(--panel-strong);color:var(--t-1)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.78);
  -webkit-backdrop-filter:blur(var(--blur));
  backdrop-filter:blur(var(--blur));
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(3,8,20,.5);
}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--t-1);letter-spacing:.2px}
.logo__mark{
  width:34px;height:34px;flex:none;border-radius:10px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  display:grid;place-items:center;color:#04121a;font-size:12px;font-weight:800;letter-spacing:.02em;
  box-shadow:0 8px 22px rgba(43,217,232,.3);
}
.logo__accent{color:var(--c-primary)}
.nav__list{display:flex;align-items:center;gap:4px}
.nav__link{
  position:relative;display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--t-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav__link:hover{color:var(--t-1);background:var(--panel)}
.nav__link.is-active{color:var(--t-1);font-weight:600}
.nav__link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.85);
}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--panel);color:var(--t-1);
  place-items:center;cursor:pointer;
}
.nav__toggle svg{width:22px;height:22px}
@media (max-width:1023px){
  .nav__list,.nav__right .btn{display:none}
  .nav__toggle{display:grid}
}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:80;display:flex;flex-direction:column;
  padding:88px 24px 24px;
  background:rgba(5,7,15,.94);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer__link{
  display:block;padding:16px 4px;border-bottom:1px solid var(--line);
  font-size:17px;color:var(--t-1);font-weight:600;
  opacity:0;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.drawer.is-open .drawer__link{opacity:1;transform:none}
.drawer.is-open .drawer__link:nth-child(1){transition-delay:.04s}
.drawer.is-open .drawer__link:nth-child(2){transition-delay:.08s}
.drawer.is-open .drawer__link:nth-child(3){transition-delay:.12s}
.drawer.is-open .drawer__link:nth-child(4){transition-delay:.16s}
.drawer.is-open .drawer__link:nth-child(5){transition-delay:.2s}
.drawer__foot{margin-top:auto;padding-top:24px}
.drawer__close{
  position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--panel);color:var(--t-1);
  display:grid;place-items:center;cursor:pointer;
}
.drawer__close svg{width:20px;height:20px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding-block:72px 84px;min-height:600px;display:flex;align-items:center}
.hero__bg{
  position:absolute;inset:0;z-index:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg, rgba(5,7,15,.94) 0%, rgba(5,7,15,.82) 48%, rgba(5,7,15,.6) 100%),
    radial-gradient(620px 420px at 6% 96%, rgba(43,217,232,.26), transparent 70%);
}
.hero .container{position:relative;z-index:2}
.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--panel);
  font-size:13px;color:var(--c-primary);font-weight:600;margin-bottom:20px;
  -webkit-backdrop-filter:blur(var(--blur));backdrop-filter:blur(var(--blur));
}
.hero__badge i{width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px var(--c-primary);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(28px,4.2vw,52px);line-height:1.16;font-weight:800;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--c-primary);background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero__sub{font-size:17px;line-height:1.9;color:var(--t-2);max-width:600px;margin-bottom:30px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px}
.hero__trust{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;max-width:640px}
.trust-item{border-left:2px solid var(--line-strong);padding-left:14px}
.trust-item strong{
  display:block;font-size:clamp(20px,2.2vw,26px);font-weight:800;color:var(--t-1);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.trust-item span{font-size:13px;color:var(--t-3)}

.hero__card{
  position:relative;
  border:1px solid var(--line-strong);border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  -webkit-backdrop-filter:blur(var(--blur));backdrop-filter:blur(var(--blur));
  box-shadow:var(--shadow-card),0 0 0 1px rgba(43,217,232,.08) inset;
  padding:26px;
}
.hero__card::before{
  content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;
  background:linear-gradient(140deg,rgba(43,217,232,.35),transparent 40%,transparent 70%,rgba(122,108,255,.28));
  -webkit-mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
}
.hero__card h3{font-size:18px;margin-bottom:6px}
.hero__card .card-desc{font-size:14px;color:var(--t-2);line-height:1.8;margin-bottom:18px}
.hero__list li{
  display:flex;align-items:flex-start;gap:10px;
  padding:11px 0;border-bottom:1px dashed rgba(120,200,255,.16);font-size:14px;color:var(--t-2);
}
.hero__list li:last-child{border-bottom:0}
.hero__list svg{width:18px;height:18px;flex:none;margin-top:4px;color:var(--c-primary)}
.hero__card .btn{margin-top:18px}
@media (max-width:1023px){
  .hero{min-height:auto;padding-top:56px}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero__trust{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .hero{padding-block:48px 56px}
  .hero__sub{font-size:15px}
  .hero__actions .btn{flex:1 1 auto}
}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);overflow:hidden;
}
.metric{padding:24px 22px;border-right:1px solid var(--line);transition:background .25s var(--ease)}
.metric:last-child{border-right:0}
.metric:hover{background:var(--panel-strong)}
.metric strong{
  display:block;font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--t-1);
  font-variant-numeric:tabular-nums;line-height:1.15;margin-bottom:4px;
}
.metric span{font-size:13px;color:var(--t-3)}
@media (max-width:767px){
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
}

/* ============ 阶梯 ============ */
.ladder{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;align-items:start}
.step-card{
  position:relative;padding:28px 24px 24px;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(var(--blur));backdrop-filter:blur(var(--blur));
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--shadow-glow)}
.step-card--2{margin-top:32px}
.step-card--3{margin-top:64px}
.step-card__num{
  position:absolute;top:14px;right:20px;
  font-size:56px;font-weight:800;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px rgba(43,217,232,.4);
  font-variant-numeric:tabular-nums;pointer-events:none;
}
.step-card h3{font-size:20px;margin-bottom:8px}
.step-card__meta{font-size:13px;color:var(--c-primary);font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.step-card ul{margin-bottom:20px}
.step-card li{
  position:relative;padding-left:18px;font-size:14.5px;color:var(--t-2);line-height:1.85;
}
.step-card li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;
  background:var(--c-primary);opacity:.7;
}
.ladder-note{margin-top:34px;font-size:14px;color:var(--t-3)}
@media (max-width:1023px){
  .ladder{grid-template-columns:1fr;gap:20px}
  .step-card--2,.step-card--3{margin-top:0;margin-left:0}
  .ladder{position:relative}
}
@media (max-width:767px){
  .ladder{padding-left:20px}
  .ladder::before{
    content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
    background:linear-gradient(180deg,rgba(43,217,232,.5),rgba(43,217,232,.05));
  }
  .step-card::before{
    content:"";position:absolute;left:-19px;top:34px;width:9px;height:9px;border-radius:50%;
    background:var(--bg-0);border:2px solid var(--c-primary);
  }
}

/* ============ 套餐对比 ============ */
.table-wrap{
  position:relative;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);overflow:hidden;
}
.table-scroll{overflow-x:auto;scrollbar-width:thin}
.table-scroll::-webkit-scrollbar{height:8px}
.table-scroll::-webkit-scrollbar-thumb{background:rgba(43,217,232,.3);border-radius:8px}
.plan-table{min-width:760px;font-size:14.5px}
.plan-table th,.plan-table td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
.plan-table thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(10,17,32,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  color:var(--t-1);font-size:15px;font-weight:700;white-space:nowrap;
}
.plan-table tbody th{
  position:sticky;left:0;z-index:2;
  background:rgba(10,17,32,.96);
  color:var(--t-2);font-weight:600;white-space:nowrap;
}
.plan-table tbody tr:hover td,.plan-table tbody tr:hover th{background:var(--panel-strong)}
.plan-table td{color:var(--t-2)}
.plan-table .col-hl{background:rgba(43,217,232,.06);border-inline:1px solid rgba(43,217,232,.28)}
.plan-table thead .col-hl{color:var(--c-primary)}
.plan-table .yes{color:var(--ok);font-weight:600}
.plan-table .no{color:var(--t-3)}
.plan-table svg{width:17px;height:17px;vertical-align:-3px}
.plan-table tfoot td{border-bottom:0;padding-top:20px;padding-bottom:22px}
.badge-rec{
  display:inline-block;margin-left:8px;padding:2px 9px;border-radius:999px;
  background:var(--c-accent);color:#1a0a02;font-size:11px;font-weight:700;vertical-align:2px;
}
.scroll-hint{display:none;padding:10px 18px;font-size:12.5px;color:var(--t-3);border-top:1px solid var(--line)}
@media (max-width:767px){
  .scroll-hint{display:block}
  .plan-table th,.plan-table td{padding:13px 14px;font-size:13.5px}
}

/* ============ 限时入口 ============ */
.flash{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 30px;border-radius:var(--r-card);
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(43,217,232,.10),rgba(122,108,255,.10)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  box-shadow:0 0 0 1px rgba(43,217,232,.1) inset;
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 1px rgba(43,217,232,.12) inset,0 0 0 rgba(43,217,232,0)}
  50%{box-shadow:0 0 0 1px rgba(43,217,232,.28) inset,0 0 36px rgba(43,217,232,.22)}
}
.flash__left h2{font-size:clamp(20px,2.3vw,28px);margin-bottom:8px}
.flash__left p{font-size:14.5px;color:var(--t-2);max-width:560px}
.flash__right{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.countdown{display:flex;align-items:center;gap:6px}
.cd-box{
  min-width:56px;padding:8px 10px;border-radius:12px;text-align:center;
  background:rgba(255,255,255,.07);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.cd-box b{display:block;font-size:22px;font-weight:800;color:var(--t-1);font-variant-numeric:tabular-nums;line-height:1.15}
.cd-box span{font-size:11px;color:var(--t-3)}
.cd-sep{color:var(--c-primary);font-weight:800;font-size:20px;line-height:1}
.flash__tag{
  display:inline-block;padding:4px 12px;border-radius:999px;margin-bottom:12px;
  background:var(--c-accent);color:#1a0a02;font-size:12px;font-weight:700;letter-spacing:.04em;
}

/* ============ 最新信息 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(170deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),var(--shadow-glow)}
.post-card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .post-card__media img{transform:scale(1.05)}
.post-card__cat{
  position:absolute;left:12px;top:12px;padding:3px 11px;border-radius:999px;
  background:rgba(5,7,15,.72);border:1px solid var(--line-strong);
  color:var(--c-primary);font-size:12px;font-weight:600;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.post-card__body{padding:20px;display:flex;flex-direction:column;flex:1}
.post-card__body h3{
  font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__body p{
  font-size:14px;color:var(--t-2);line-height:1.8;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3);
}
.post-card__foot .cat{color:var(--t-2)}
.post-card:hover .link-arrow{gap:10px}
.empty-card{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--panel);text-align:center;
}
.empty-card svg{width:40px;height:40px;color:var(--t-3)}
.empty-card p{font-size:15px;color:var(--t-2)}
@media (max-width:1023px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.post-grid{grid-template-columns:1fr}}

/* ============ 分类入口卡 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
.cat-card{
  position:relative;display:flex;flex-direction:column;
  padding:24px 22px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);
  transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.cat-card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--panel-strong)}
.cat-card__icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(43,217,232,.18),rgba(122,108,255,.18));
  border:1px solid var(--line);color:var(--c-primary);
}
.cat-card__icon svg{width:22px;height:22px}
.cat-card h3{font-size:17px;margin-bottom:8px}
.cat-card p{font-size:14px;color:var(--t-2);line-height:1.8;margin-bottom:16px}
.cat-card .link-arrow{margin-top:auto}
@media (max-width:1023px){.cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.cat-grid{grid-template-columns:1fr}}

/* ============ 图文区块 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.split--rev .split__media{order:2}
.split__media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.split__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split__media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,15,.05),rgba(5,7,15,.42));
}
.split h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:16px}
.split p{font-size:15.5px;line-height:1.9;margin-bottom:16px}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 0;font-size:15px;color:var(--t-2);
}
.check-list svg{width:19px;height:19px;flex:none;margin-top:4px;color:var(--c-primary)}
@media (max-width:900px){
  .split{grid-template-columns:1fr;gap:28px}
  .split--rev .split__media{order:0}
}

/* ============ FAQ ============ */
.faq{display:grid;gap:14px;max-width:900px;margin-inline:auto}
.faq details{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);overflow:hidden;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.faq details[open]{border-color:var(--line-strong);background:var(--panel-strong)}
.faq summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 56px 20px 26px;font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"";position:absolute;left:10px;top:24px;width:4px;height:18px;border-radius:3px;
  background:var(--c-primary);opacity:.55;transition:opacity .2s var(--ease),box-shadow .2s var(--ease);
}
.faq details[open] summary::before{opacity:1;box-shadow:0 0 12px rgba(43,217,232,.8)}
.faq summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:14px;
  margin-top:-7px;
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform .22s var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq__body{padding:0 26px 22px;font-size:15px;line-height:1.85;color:var(--t-2)}

/* ============ 表单 ============ */
.contact{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
.contact__info h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:16px}
.contact__info p{font-size:15.5px;line-height:1.9;margin-bottom:22px}
.info-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed rgba(120,200,255,.16);font-size:14.5px;
}
.info-list li:last-child{border-bottom:0}
.info-list svg{width:20px;height:20px;flex:none;margin-top:4px;color:var(--c-primary)}
.info-list b{display:block;color:var(--t-1);font-size:15px;font-weight:600}
.form-card{
  padding:28px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(170deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(var(--blur));backdrop-filter:blur(var(--blur));
  box-shadow:var(--shadow-card);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1/-1}
.field label{font-size:14px;color:var(--t-1);font-weight:600}
.field label .req{color:var(--c-accent);margin-left:4px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  background:var(--panel);border:1px solid var(--line);color:var(--t-1);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.8;resize:vertical}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--t-2) 50%),linear-gradient(135deg,var(--t-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field input::placeholder,.field textarea::placeholder{color:var(--t-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:rgba(43,217,232,.06);
  box-shadow:0 0 0 3px rgba(43,217,232,.18);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err)}
.field__err{font-size:13px;color:var(--err);display:none}
.field.has-error .field__err{display:block}
.checkbox{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--t-2);line-height:1.7}
.checkbox input{
  width:18px;height:18px;flex:none;margin-top:3px;accent-color:#2BD9E8;cursor:pointer;
}
.form-msg{
  display:none;margin-top:18px;padding:12px 16px;border-radius:12px;font-size:14px;
}
.form-msg.is-ok{display:block;background:rgba(52,211,153,.12);border:1px solid rgba(52,211,153,.4);color:#8EF0C6}
.form-msg.is-err{display:block;background:rgba(255,107,107,.1);border:1px solid rgba(255,107,107,.4);color:#FFB1B1}
.form-card .btn{margin-top:22px}
.spinner{
  width:16px;height:16px;border-radius:50%;border:2px solid rgba(4,18,26,.3);
  border-top-color:#04121a;animation:spin .7s linear infinite;display:none;
}
@keyframes spin{to{transform:rotate(360deg)}}
.btn.is-loading .spinner{display:block}
.btn.is-loading .btn__text{opacity:.75}
@media (max-width:900px){
  .contact{grid-template-columns:1fr;gap:32px}
}
@media (max-width:560px){
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;
  background:var(--bg-footer);
  padding-top:64px;
}
.site-footer::before{
  content:"";position:absolute;inset-inline:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.4),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t-3);max-width:300px;margin-bottom:18px}
.footer-contact li{font-size:14px;color:var(--t-2);padding:4px 0;display:flex;gap:8px;align-items:center}
.footer-contact svg{width:16px;height:16px;color:var(--c-primary);flex:none}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1)}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--t-3);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary);padding-left:4px}
.footer-box{
  padding:18px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--panel);font-size:13.5px;color:var(--t-2);line-height:1.8;
}
.footer-box b{display:block;color:var(--t-1);font-size:14.5px;margin-bottom:6px}
.footer-bottom{
  border-top:1px solid var(--line);padding-block:20px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:var(--t-3);
}
.footer-bottom a:hover{color:var(--c-primary)}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:48px}
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
/* ============================================================
   爱游戏ayx官网平台 · 视觉系统
   ============================================================ */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 20px 48px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(43,217,232,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --blur:14px;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(43,217,232,.12), transparent 62%),
    radial-gradient(760px 480px at 96% 2%, rgba(122,108,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:auto, auto, 46px 46px, 46px 46px;
  background-repeat:no-repeat, no-repeat, repeat, repeat;
  color:var(--t-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  text-wrap:pretty;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(43,217,232,.65), rgba(122,108,255,.55), transparent);
  z-index:60;
  pointer-events:none;
}

h1,h2,h3,h4{
  margin:0 0 .55em;
  color:var(--t-1);
  line-height:1.3;
  text-wrap:balance;
  font-weight:700;
}
h1{font-size:clamp(28px,4.2vw,52px);line-height:1.16;font-weight:800}
h2{font-size:clamp(22px,2.6vw,34px)}
h3{font-size:20px;font-weight:600;line-height:1.4}
h4{font-size:15px;font-weight:600;letter-spacing:.02em}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}

a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#7BEEF8}

img{max-width:100%;display:block}

ul,ol{margin:0;padding:0;list-style:none}

b,strong{color:var(--t-1);font-weight:700}

button{font:inherit;color:inherit}

svg{width:20px;height:20px;flex:0 0 auto}

:focus-visible{
  outline:2px solid var(--c-primary);
  outline-offset:2px;
  border-radius:6px;
}

::selection{background:rgba(43,217,232,.32);color:#fff}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:linear-gradient(120deg,var(--c-primary),#57E4F2 55%,var(--c-primary-2));
  color:#03111A;
  box-shadow:0 10px 30px rgba(43,217,232,.28);
}
.btn--primary:hover{
  color:#03111A;
  box-shadow:0 16px 40px rgba(43,217,232,.42);
  transform:translateY(-2px);
}
.btn--ghost{
  background:var(--panel);
  border-color:var(--line);
  color:var(--t-1);
  backdrop-filter:blur(var(--blur));
}
.btn--ghost:hover{
  border-color:var(--line-strong);
  color:var(--t-1);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.btn--lg{padding:15px 28px;font-size:16px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(43,217,232,.08);
  color:var(--c-primary);
  font-size:13px;
  font-weight:600;
  line-height:1.5;
  letter-spacing:.02em;
}

.eyebrow{
  display:inline-block;
  margin:0 0 10px;
  color:var(--c-primary);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  height:68px;
  display:flex;
  align-items:center;
  background:rgba(5,7,15,.55);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(10,17,32,.82);
  backdrop-filter:blur(var(--blur));
  border-bottom-color:var(--line);
  box-shadow:0 12px 36px rgba(2,6,16,.6);
}
.site-header .container{display:flex;align-items:center}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t-1);
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo:hover{color:var(--t-1)}
.logo__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(43,217,232,.24),rgba(122,108,255,.28));
  border:1px solid var(--line-strong);
  color:#DFFCFF;
  font-size:13px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:inset 0 0 18px rgba(43,217,232,.22);
}
.logo__accent{color:var(--c-primary)}

.nav__list{
  display:flex;
  align-items:center;
  gap:6px;
}
.nav__link{
  position:relative;
  display:block;
  padding:9px 12px;
  border-radius:10px;
  color:var(--t-2);
  font-size:14.5px;
  font-weight:500;
  transition:color .2s var(--ease), background .2s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:1px;
  width:0;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.85);
  transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav__link:hover{color:var(--t-1);background:var(--panel)}
.nav__link.is-active{color:var(--t-1)}
.nav__link.is-active::after{width:18px}

.nav__right{display:flex;align-items:center;gap:12px}

.nav__toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:11px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--t-1);
  cursor:pointer;
}
.nav__toggle:hover{border-color:var(--line-strong)}
.nav__toggle svg{width:22px;height:22px}

/* ---------- 面包屑 ---------- */
.crumbs{margin-bottom:22px}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px}
.crumbs li{color:var(--t-3)}
.crumbs li::after{content:"/";margin-left:8px;color:var(--t-3);opacity:.6}
.crumbs li:last-child::after{content:""}
.crumbs a{color:var(--t-2)}
.crumbs a:hover{color:var(--c-primary)}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;
  padding:64px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero__bg{position:absolute;inset:0;z-index:0}
.page-hero__bg img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.4;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:
    linear-gradient(180deg, rgba(5,7,15,.74) 0%, rgba(5,7,15,.88) 62%, var(--bg-0) 100%),
    radial-gradient(680px 380px at 4% 96%, rgba(43,217,232,.22), transparent 66%);
}
.page-hero__inner{position:relative;z-index:2;max-width:880px}
.page-hero__lead{
  margin:0;
  max-width:640px;
  font-size:17px;
  line-height:1.85;
  color:var(--t-2);
}

.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
}
.hero-stats__item{
  min-width:168px;
  padding:14px 20px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(var(--blur));
}
.hero-stats__item b{
  display:block;
  color:var(--t-1);
  font-size:clamp(20px,2.4vw,26px);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  line-height:1.3;
}
.hero-stats__item span{font-size:13px;color:var(--t-3)}

/* ---------- 通用板块 ---------- */
.section{
  position:relative;
  padding:88px 0;
}
.section--alt{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:46px;
}
.section__title{margin:0;max-width:620px}
.section__desc{
  margin:0;
  max-width:400px;
  font-size:15px;
  color:var(--t-2);
}

/* ---------- 图文交替 ---------- */
.zigzag{display:flex;flex-direction:column;gap:56px}
.zigzag__row{
  display:grid;
  grid-template-columns:1fr 1fr;
  align-items:center;
  gap:48px;
}
.zigzag__row--reverse .zigzag__media{order:2}
.zigzag__media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.zigzag__media img{
  width:100%;
  height:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-card);
  transition:transform .4s var(--ease);
}
.zigzag__media:hover img{transform:scale(1.03)}
.zigzag__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 45%,rgba(5,7,15,.5));
  pointer-events:none;
}
.zigzag__body h3{margin-top:14px}
.zigzag__body p{color:var(--t-2)}

.point-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.point-list li{
  position:relative;
  padding-left:24px;
  font-size:15px;
  color:var(--t-2);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.7);
}

/* ---------- 清单卡 ---------- */
.checklist-card{
  padding:34px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:linear-gradient(150deg, rgba(43,217,232,.07), rgba(255,255,255,.03) 46%, rgba(122,108,255,.06));
  backdrop-filter:blur(var(--blur));
  box-shadow:var(--shadow);
}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 34px}
.check-list--lg{gap:24px 40px}
.check-list li{display:flex;gap:14px;align-items:flex-start}
.check-list__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  margin-top:2px;
  border-radius:10px;
  border:1px solid var(--line-strong);
  background:rgba(43,217,232,.12);
  color:var(--c-primary);
  flex:0 0 auto;
}
.check-list__icon svg{width:16px;height:16px}
.check-list li b{display:block;font-size:15.5px;margin-bottom:2px}
.check-list li span{display:block;font-size:14px;color:var(--t-2);line-height:1.75}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.scene-card{
  position:relative;
  padding:30px 28px 28px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(var(--blur));
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.scene-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.scene-card__num{
  display:block;
  margin-bottom:10px;
  font-size:26px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  color:rgba(43,217,232,.42);
  letter-spacing:.04em;
}
.scene-card h3{font-size:18px;margin-bottom:8px}
.scene-card p{font-size:14.5px;margin:0}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  position:relative;
}
.steps__item{
  position:relative;
  padding:28px 22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(var(--blur));
  transition:transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.steps__item:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.steps__item::before{
  content:"";
  position:absolute;
  top:44px;
  right:-24px;
  width:24px;
  border-top:1px dashed rgba(43,217,232,.42);
}
.steps__item:last-child::before{display:none}
.steps__dot{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  margin-bottom:14px;
  border-radius:50%;
  background:rgba(43,217,232,.14);
  border:1px solid var(--line-strong);
  color:var(--c-primary);
  font-weight:800;
  font-size:14px;
  font-variant-numeric:tabular-nums;
}
.steps__item h3{font-size:16.5px;margin-bottom:6px}
.steps__item p{font-size:14px;margin:0}

/* ---------- FAQ ---------- */
.faq{
  display:flex;
  flex-direction:column;
  gap:14px;
  max-width:920px;
}
.faq__item{
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(var(--blur));
  overflow:hidden;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.faq__item[open]{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.faq__item summary{
  position:relative;
  padding:18px 56px 18px 26px;
  cursor:pointer;
  list-style:none;
  color:var(--t-1);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::before{
  content:"";
  position:absolute;
  left:12px;
  top:21px;
  bottom:21px;
  width:3px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.7);
  opacity:.35;
  transition:opacity .22s var(--ease);
}
.faq__item[open] summary::before{opacity:1}
.faq__item summary::after{
  content:"";
  position:absolute;
  right:24px;
  top:50%;
  width:12px;
  height:12px;
  margin-top:-7px;
  border-right:1.6px solid var(--c-primary);
  border-bottom:1.6px solid var(--c-primary);
  transform:rotate(45deg);
  transition:transform .22s var(--ease);
}
.faq__item[open] summary::after{transform:rotate(-135deg)}
.faq__body{
  padding:0 56px 20px 26px;
  font-size:15px;
  line-height:1.8;
  color:var(--t-2);
}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:44px;
  border-radius:22px;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(520px 260px at 92% 10%, rgba(122,108,255,.18), transparent 68%),
    linear-gradient(120deg, rgba(43,217,232,.12), rgba(255,255,255,.035));
  backdrop-filter:blur(var(--blur));
  box-shadow:var(--shadow);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{box-shadow:0 20px 48px rgba(3,8,20,.55)}
  50%{box-shadow:0 20px 56px rgba(43,217,232,.18)}
}
.cta-band__text{max-width:600px}
.cta-band__text h2{margin-bottom:10px}
.cta-band__text p{font-size:15px;margin:0}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  padding:64px 0 0;
  background:var(--bg-footer);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(43,217,232,.55), rgba(122,108,255,.45), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand p{
  margin:16px 0 0;
  max-width:320px;
  font-size:14px;
  line-height:1.8;
  color:var(--t-3);
}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:10px}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--t-2);
}
.footer-contact svg{width:18px;height:18px;color:var(--c-primary)}
.footer-col h4{color:var(--t-1);margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{color:var(--t-2);font-size:14px}
.footer-col ul a:hover{color:var(--c-primary);padding-left:3px}
.footer-box{
  padding:16px 18px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--panel);
  font-size:13.5px;
  line-height:1.8;
  color:var(--t-3);
}
.footer-box b{display:block;margin-bottom:6px;color:var(--t-1);font-size:14px}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps__item::before{display:none}
}

@media (max-width:1023px){
  .nav__list{
    position:fixed;
    inset:68px 0 0 0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:24px;
    background:rgba(6,10,20,.96);
    backdrop-filter:blur(18px);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:opacity .24s var(--ease), transform .24s var(--ease);
    overflow-y:auto;
  }
  .nav__list.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav__link{
    padding:15px 16px;
    border-radius:12px;
    border:1px solid transparent;
    font-size:16px;
    opacity:0;
    animation:none;
  }
  .nav__list.is-open .nav__link{
    animation:navIn .32s var(--ease) forwards;
  }
  .nav__list.is-open li:nth-child(1) .nav__link{animation-delay:.02s}
  .nav__list.is-open li:nth-child(2) .nav__link{animation-delay:.06s}
  .nav__list.is-open li:nth-child(3) .nav__link{animation-delay:.10s}
  .nav__list.is-open li:nth-child(4) .nav__link{animation-delay:.14s}
  .nav__list.is-open li:nth-child(5) .nav__link{animation-delay:.18s}
  .nav__list.is-open .nav__link{border-color:var(--line);background:var(--panel)}
  .nav__link::after{display:none}
  .nav__link.is-active{
    color:var(--t-1);
    border-color:var(--line-strong);
    box-shadow:inset 3px 0 0 var(--c-primary);
  }
  @keyframes navIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

  .nav__toggle{display:inline-flex}
  .nav__right .btn--primary{display:none}

  .section{padding:64px 0}
  .zigzag__row{grid-template-columns:1fr;gap:24px}
  .zigzag__row--reverse .zigzag__media{order:0}
  .check-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:767px){
  body{font-size:15px;line-height:1.8}
  .container{padding:0 16px}
  .page-hero{padding:44px 0 52px}
  .page-hero__lead{font-size:15.5px}
  .hero-stats{gap:10px}
  .hero-stats__item{min-width:0;flex:1 1 140px;padding:12px 16px}
  .section{padding:52px 0}
  .section__head{margin-bottom:32px}
  .section__desc{max-width:none}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .checklist-card{padding:24px 20px}
  .cta-band{padding:30px 22px;border-radius:18px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 100%}
  .faq__item summary{padding:16px 46px 16px 22px;font-size:15px}
  .faq__item summary::before{left:10px}
  .faq__body{padding:0 22px 18px 22px;font-size:14.5px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}

@media (max-width:480px){
  .logo{font-size:14.5px}
  .logo__mark{width:32px;height:32px;font-size:12px}
  .btn{padding:11px 18px;font-size:14.5px}
  .cta-band__actions .btn{width:100%}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 20px 48px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(43,217,232,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--t-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(43,217,232,.12), transparent 62%),
    radial-gradient(760px 480px at 96% 2%, rgba(122,108,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size:auto,auto,52px 52px,52px 52px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none}
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{margin:0;color:var(--t-1);line-height:1.3;text-wrap:balance;font-weight:700}
p{margin:0 0 1em;text-wrap:pretty}
ul{margin:0;padding:0}
::selection{background:rgba(43,217,232,.3);color:#fff}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--container:1280px}}

/* ---------- 阅读进度条 ---------- */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:200;background:rgba(255,255,255,.06)}
.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2));box-shadow:0 0 12px rgba(43,217,232,.85);transition:width .12s linear}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.2px;cursor:pointer;
  border:1px solid transparent;background:transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:linear-gradient(135deg,var(--c-primary),#22b6d6);
  color:#03151a;font-weight:700;
  box-shadow:0 10px 26px rgba(43,217,232,.28);
}
.btn--primary:hover{box-shadow:0 14px 34px rgba(43,217,232,.42);transform:translateY(-2px)}
.btn--ghost{
  border-color:rgba(43,217,232,.4);color:var(--t-1);background:var(--panel);
}
.btn--ghost:hover{border-color:var(--c-primary);background:var(--panel-strong);transform:translateY(-2px)}
.btn--sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(5,7,15,.55);
  backdrop-filter:blur(calc(var(--blur,14px)));
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:rgba(7,11,22,.86);
  border-bottom-color:var(--line);
  box-shadow:0 14px 34px rgba(2,5,14,.6);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;position:relative}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--t-1);letter-spacing:.2px}
.logo__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;font-size:13px;font-weight:800;letter-spacing:.5px;
  color:#03151a;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 8px 20px rgba(43,217,232,.3);
}
.logo__accent{color:var(--c-primary)}
.nav__list{display:flex;align-items:center;gap:4px;list-style:none}
.nav__link{
  position:relative;display:inline-block;padding:10px 12px;font-size:14.5px;color:var(--t-2);border-radius:10px;
}
.nav__link:hover{color:var(--t-1);background:var(--panel)}
.nav__link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 10px rgba(43,217,232,.9);
  transform:translateX(-50%);transition:width .22s var(--ease);
}
.nav__link.is-active{color:var(--t-1)}
.nav__link.is-active::after{width:18px}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--t-1);cursor:pointer;
}
.nav__toggle svg{width:22px;height:22px}
.nav__toggle:hover{border-color:var(--line-strong)}

@media (max-width:1023px){
  .nav__toggle{display:inline-flex}
  .nav .nav__list{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:10px 16px 16px;margin:0;
    background:rgba(6,10,20,.97);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 48px rgba(2,5,14,.7);
    display:none;
  }
  .site-header.nav-open .nav .nav__list{display:flex}
  .nav__link{padding:13px 12px;font-size:15px;border-radius:10px}
  .nav__link::after{display:none}
  .nav__link.is-active{background:var(--panel-strong);color:var(--c-primary)}
  .nav__link:hover{background:var(--panel-strong)}
}
@media (max-width:560px){
  .nav__right .btn--primary{display:none}
  .logo{font-size:15px}
  .logo__mark{width:34px;height:34px;font-size:12px}
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:26px 0 0;font-size:13.5px;color:var(--t-3);
}
.crumb a{color:var(--t-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb__sep{opacity:.5}
.crumb__now{color:var(--t-2);max-width:52%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article{padding-bottom:20px}
.article__head{padding:22px 0 4px;max-width:860px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.4px;
  color:var(--c-primary);background:rgba(43,217,232,.1);border:1px solid rgba(43,217,232,.32);
}
.article__title{
  margin:18px 0 16px;
  font-size:clamp(26px,3.8vw,44px);
  line-height:1.22;font-weight:800;letter-spacing:.2px;
}
.article__meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  font-size:13.5px;color:var(--t-3);padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--t-3);opacity:.6}
.article__cover{
  margin:30px 0 10px;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(43,217,232,.14),rgba(122,108,255,.14));
  box-shadow:var(--shadow);
}
.article__cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.article__caption{margin:10px 2px 0;font-size:13px;color:var(--t-3)}

/* ---------- 正文排版 ---------- */
.article__body{margin-top:34px}
.prose{
  max-width:820px;font-size:17px;line-height:1.9;color:var(--t-2);
}
.prose p{margin:0 0 1.2em}
.prose h2{
  position:relative;font-size:clamp(20px,2.4vw,24px);line-height:1.45;font-weight:700;
  color:var(--t-1);margin:44px 0 16px;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.2em;width:4px;height:1.05em;border-radius:2px;
  background:var(--c-primary);box-shadow:0 0 14px rgba(43,217,232,.75);
}
.prose h3{font-size:19px;color:var(--t-1);margin:32px 0 12px}
.prose h4{font-size:16.5px;color:var(--t-1);margin:24px 0 10px}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.35em}
.prose li{margin:.42em 0}
.prose ul li::marker{color:var(--c-primary)}
.prose a{color:var(--c-primary);border-bottom:1px solid rgba(43,217,232,.35)}
.prose a:hover{border-bottom-color:var(--c-primary)}
.prose strong{color:var(--t-1);font-weight:700}
.prose blockquote{
  margin:24px 0;padding:18px 22px;border-radius:0 14px 14px 0;
  background:var(--panel);border-left:3px solid var(--c-primary);color:var(--t-1);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--r-img);margin:20px 0;border:1px solid var(--line)}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--t-3);margin-top:8px;text-align:center}
.prose table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  display:block;overflow-x:auto;border-radius:12px;
}
.prose th,.prose td{border:1px solid var(--line);padding:12px 15px;text-align:left;white-space:nowrap}
.prose thead th{background:var(--panel-strong);color:var(--t-1);font-weight:600}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.028)}
.prose code{
  padding:2px 7px;border-radius:6px;font-size:14px;
  background:rgba(122,108,255,.16);color:#c9c2ff;
}

/* ---------- 正文尾部 ---------- */
.article__foot{
  max-width:820px;margin:46px 0 0;padding-top:24px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.taglist{display:flex;flex-wrap:wrap;gap:9px}
.tag{
  display:inline-flex;align-items:center;padding:6px 13px;border-radius:999px;
  font-size:13px;color:var(--t-2);background:var(--panel);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{color:var(--c-primary);border-color:var(--line-strong);transform:translateY(-2px)}
.article__actions{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- 空态 ---------- */
.empty{
  max-width:820px;padding:54px 32px;text-align:center;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--panel);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
}
.empty svg{width:44px;height:44px;margin:0 auto 16px;color:var(--c-primary);opacity:.85}
.empty h2{font-size:22px;margin-bottom:10px}
.empty p{margin-bottom:22px;color:var(--t-3)}

/* ---------- 继续阅读 / 相关推荐 ---------- */
.section{padding:70px 0 0}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line);
}
.section__head h2{font-size:clamp(20px,2.4vw,26px)}
.section__head p{margin:6px 0 0;font-size:14px;color:var(--t-3)}
.section__more{font-size:14px;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.section__more:hover{gap:10px}

.postnav{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.postnav__card{
  display:block;padding:24px 26px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--panel);
  box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.postnav__card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.postnav__label{font-size:12.5px;letter-spacing:1px;color:var(--t-3);text-transform:uppercase}
.postnav__title{margin:10px 0 8px;font-size:18px;color:var(--t-1)}
.postnav__desc{font-size:14px;color:var(--t-2);margin:0}
.postnav__card--next{text-align:right}

.cardgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);border:1px solid var(--line);background:var(--panel);
  box-shadow:var(--shadow);transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.card__cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(43,217,232,.16),rgba(122,108,255,.16))}
.card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card__cover img{transform:scale(1.04)}
.card__badge{
  position:absolute;left:12px;top:12px;padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;color:#03151a;background:rgba(43,217,232,.92);
}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card__title{font-size:17px;line-height:1.5;color:var(--t-1);margin-bottom:10px}
.card:hover .card__title{color:var(--c-primary)}
.card__desc{font-size:14px;color:var(--t-2);margin:0 0 18px;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;
  font-size:13px;color:var(--t-3);padding-top:14px;border-top:1px solid var(--line);
}
.card__arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);transition:gap .2s var(--ease)}
.card:hover .card__arrow{gap:10px}

/* ---------- CTA ---------- */
.cta{padding:78px 0 0}
.cta__box{
  position:relative;overflow:hidden;padding:52px 46px;border-radius:24px;
  border:1px solid var(--line-strong);
  background:linear-gradient(135deg,rgba(43,217,232,.12),rgba(122,108,255,.12)),var(--panel);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta__box::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,217,232,.28),transparent 68%);
}
.cta__text{max-width:640px;position:relative;z-index:1}
.cta__text h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:12px}
.cta__text p{margin:0;color:var(--t-2);font-size:15.5px}
.cta__actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;background:var(--bg-footer);
  border-top:1px solid var(--line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.55),rgba(122,108,255,.45),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
  padding:62px 0 42px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t-3);max-width:330px;margin-bottom:18px}
.footer-contact{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--t-2)}
.footer-contact svg{width:17px;height:17px;flex:none;margin-top:4px;color:var(--c-primary)}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--t-1)}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:14px;color:var(--t-3)}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-box{
  padding:16px 18px;border-radius:14px;font-size:13.5px;color:var(--t-2);
  background:var(--panel);border:1px solid var(--line);line-height:1.8;
}
.footer-box b{display:block;color:var(--t-1);font-size:14px;margin-bottom:6px;font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cardgrid{grid-template-columns:repeat(2,1fr)}
  .section{padding:54px 0 0}
}
@media (max-width:767px){
  body{font-size:15px;line-height:1.8}
  .container{padding:0 16px}
  .article__head{padding-top:16px}
  .article__title{margin:14px 0 14px;font-size:clamp(24px,6.4vw,30px)}
  .crumb{padding-top:18px}
  .crumb__now{max-width:100%;white-space:normal}
  .prose{font-size:16.5px;line-height:1.85}
  .postnav{grid-template-columns:1fr}
  .postnav__card--next{text-align:left}
  .cardgrid{grid-template-columns:1fr}
  .section{padding:46px 0 0}
  .cta__box{padding:34px 22px;flex-direction:column;align-items:flex-start}
  .cta__actions{width:100%}
  .cta__actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .article__foot{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .btn{width:100%}
  .article__actions{width:100%}
  .nav__right{gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
/* ===================== 设计变量 ===================== */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --blur:14px;
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --shadow:0 20px 48px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(43,217,232,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ===================== reset / base ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--t-2);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 520px at 8% -6%, rgba(43,217,232,.12), transparent 62%),
    radial-gradient(820px 480px at 96% 4%, rgba(122,108,255,.10), transparent 66%),
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size:auto, auto, 48px 48px, 48px 48px;
  background-attachment:fixed;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--t-1);text-wrap:balance;letter-spacing:0;}
p{margin:0;text-wrap:pretty;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:#7deaf4;}
img{max-width:100%;display:block;border-style:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
svg{display:block;}
::selection{background:rgba(43,217,232,.28);color:#fff;}

/* ===================== 容器 ===================== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ===================== 通用按钮 ===================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;}
.btn:active{transform:translateY(1px);}
.btn--primary{
  color:#04202a;
  background:linear-gradient(135deg,#2BD9E8 0%,#59e6f0 52%,#8ef0f6 100%);
  box-shadow:0 12px 30px rgba(43,217,232,.28);
}
.btn--primary:hover{
  color:#04202a;
  box-shadow:0 16px 40px rgba(43,217,232,.42);
  transform:translateY(-2px);
}
.btn--ghost{
  color:var(--t-1);
  background:var(--panel);
  border-color:var(--line);
  backdrop-filter:blur(var(--blur));
}
.btn--ghost:hover{
  color:#fff;
  border-color:var(--line-strong);
  background:var(--panel-strong);
  transform:translateY(-2px);
}
.btn--accent{
  color:#2a1405;
  background:linear-gradient(135deg,#FF8A3D,#ffab6f);
  box-shadow:0 12px 30px rgba(255,138,61,.24);
}
.btn--accent:hover{
  color:#2a1405;
  box-shadow:0 16px 40px rgba(255,138,61,.36);
  transform:translateY(-2px);
}
.btn--block{width:100%;}

.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ===================== 徽章 / 标签 ===================== */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--c-primary);
  background:rgba(43,217,232,.10);
  border:1px solid rgba(43,217,232,.30);
}
.badge--purple{color:#b4aaff;background:rgba(122,108,255,.12);border-color:rgba(122,108,255,.32);}
.badge--accent{color:#ffbc8b;background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.32);}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.chip{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--t-2);
  background:var(--panel);
  border:1px solid var(--line);
}
.chip:hover{color:var(--t-1);border-color:var(--line-strong);}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,15,.55);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.35),rgba(122,108,255,.28),transparent);
  opacity:0;
  transition:opacity .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.86);
  backdrop-filter:blur(var(--blur));
  box-shadow:0 14px 40px rgba(2,5,12,.6);
}
.site-header.is-scrolled::after{opacity:1;}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--t-1);
  letter-spacing:.01em;
  white-space:nowrap;
}
.logo:hover{color:var(--t-1);}
.logo__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:11px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.04em;
  color:#04202a;
  background:linear-gradient(135deg,#2BD9E8,#7A6CFF);
  box-shadow:0 8px 22px rgba(43,217,232,.28);
}
.logo__accent{
  background:linear-gradient(90deg,#2BD9E8,#7A6CFF);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav__list{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:10px;
  font-size:14.5px;
  font-weight:500;
  color:var(--t-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav__link:hover{color:var(--t-1);background:rgba(255,255,255,.04);}
.nav__link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  width:18px;
  height:2px;
  border-radius:2px;
  transform:translateX(-50%) scaleX(0);
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.85);
  transition:transform .22s var(--ease);
}
.nav__link.is-active{color:var(--t-1);font-weight:600;}
.nav__link.is-active::after{transform:translateX(-50%) scaleX(1);}
.nav__right{display:flex;align-items:center;gap:12px;}
.nav__toggle{
  display:none;
  width:42px;height:42px;
  border-radius:11px;
  align-items:center;
  justify-content:center;
  color:var(--t-1);
  background:var(--panel);
  border:1px solid var(--line);
}
.nav__toggle svg{width:22px;height:22px;}
.nav__toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

/* ===================== 面包屑 ===================== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:22px 0 0;
  font-size:13.5px;
  color:var(--t-3);
}
.breadcrumb a{color:var(--t-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb span.sep{color:rgba(110,128,155,.6);}
.breadcrumb .current{color:var(--t-2);}

/* ===================== 页面头部 ===================== */
.page-hero{position:relative;padding:26px 0 0;}
.page-hero__panel{
  position:relative;
  overflow:hidden;
  border-radius:24px;
  border:1px solid var(--line);
  background:var(--bg-1);
  box-shadow:var(--shadow);
}
.page-hero__bg{
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.42;
}
.page-hero__panel::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(5,7,15,.72) 0%, rgba(5,7,15,.90) 62%, rgba(5,7,15,.97) 100%),
    radial-gradient(620px 340px at 10% 100%, rgba(43,217,232,.22), transparent 70%);
}
.page-hero__inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:36px;
  align-items:center;
  padding:56px 48px 52px;
}
.page-hero h1{
  font-size:clamp(28px,4vw,50px);
  line-height:1.16;
  font-weight:800;
  margin:16px 0 18px;
}
.page-hero__lead{
  font-size:16.5px;
  line-height:1.85;
  color:var(--t-2);
  max-width:60ch;
}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

.hero-card{
  position:relative;
  padding:26px 24px;
  border-radius:var(--r-card);
  background:var(--panel-strong);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
  box-shadow:0 18px 44px rgba(3,8,20,.5);
}
.hero-card::before{
  content:"";
  position:absolute;
  inset:-1px;
  border-radius:inherit;
  padding:1px;
  background:linear-gradient(140deg,rgba(43,217,232,.55),rgba(122,108,255,.28),transparent 70%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.hero-card__num{
  font-size:clamp(34px,4.4vw,52px);
  font-weight:800;
  line-height:1.05;
  color:var(--t-1);
  letter-spacing:-.01em;
}
.hero-card__num small{font-size:16px;font-weight:600;color:var(--c-primary);margin-left:6px;letter-spacing:0;}
.hero-card__cap{font-size:13.5px;color:var(--t-3);margin-top:6px;}
.hero-steps{margin-top:20px;display:grid;gap:12px;}
.hero-steps li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:var(--t-2);
}
.hero-steps b{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:22px;height:22px;
  margin-top:2px;
  border-radius:7px;
  font-size:12px;
  color:var(--c-primary);
  background:rgba(43,217,232,.12);
  border:1px solid rgba(43,217,232,.3);
}

/* ===================== 板块 ===================== */
.section{padding:88px 0;position:relative;}
.section--alt{background:linear-gradient(180deg,rgba(10,17,32,0),rgba(10,17,32,.72) 22%,rgba(10,17,32,.72) 78%,rgba(10,17,32,0));}
.section + .section{border-top:1px solid rgba(120,200,255,.10);}
.section__head{max-width:720px;margin-bottom:40px;}
.section__head h2{
  font-size:clamp(22px,2.6vw,34px);
  line-height:1.3;
  font-weight:700;
  margin:14px 0 14px;
}
.section__head p{font-size:16px;color:var(--t-2);}
.section__head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}

/* ===================== 两列内容卡 ===================== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.info-card{
  position:relative;
  display:flex;
  flex-direction:column;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  overflow:hidden;
  backdrop-filter:blur(var(--blur));
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.info-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.info-card__media{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(140deg,rgba(43,217,232,.14),rgba(122,108,255,.16));
}
.info-card__media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.info-card:hover .info-card__media img{transform:scale(1.04);}
.info-card__media .badge{
  position:absolute;
  left:14px;top:14px;
  backdrop-filter:blur(8px);
  background:rgba(5,7,15,.62);
}
.info-card__body{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:22px 22px 24px;
  flex:1;
}
.info-card__body h3{font-size:19px;font-weight:600;line-height:1.45;}
.info-card__body p{font-size:14.5px;color:var(--t-2);line-height:1.8;}
.point-list{display:grid;gap:8px;margin-top:2px;}
.point-list li{
  display:flex;
  gap:8px;
  align-items:flex-start;
  font-size:13.5px;
  color:var(--t-2);
  line-height:1.72;
}
.point-list svg{
  flex:0 0 auto;
  width:16px;height:16px;
  margin-top:5px;
  color:var(--c-primary);
}
.info-card__foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px dashed rgba(120,200,255,.16);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.info-card__foot span{font-size:13px;color:var(--t-3);}

/* ===================== 指标条 ===================== */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  padding:32px 28px;
  border-radius:22px;
  background:linear-gradient(140deg,rgba(43,217,232,.07),rgba(122,108,255,.07));
  border:1px solid var(--line);
}
.metric{padding:4px 6px;}
.metric__num{
  font-size:clamp(30px,3.6vw,46px);
  font-weight:800;
  line-height:1.1;
  color:var(--t-1);
}
.metric__num span{font-size:15px;font-weight:600;color:var(--c-primary);margin-left:4px;}
.metric__label{font-size:13.5px;color:var(--t-3);margin-top:4px;}
.metric + .metric{border-left:1px solid rgba(120,200,255,.14);padding-left:22px;}

/* ===================== 图文分栏（自查清单） ===================== */
.split{
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:40px;
  align-items:center;
}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px;}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:16px 16px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:14.5px;
  color:var(--t-2);
  line-height:1.7;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.check-list li:hover{border-color:var(--line-strong);background:var(--panel-strong);transform:translateY(-2px);}
.check-list b{
  flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;
  border-radius:8px;
  font-size:12px;
  font-weight:700;
  color:var(--c-primary);
  background:rgba(43,217,232,.12);
  border:1px solid rgba(43,217,232,.3);
}
.figure{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow);
}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.figure figcaption{
  padding:14px 18px;
  font-size:13px;
  color:var(--t-3);
  border-top:1px solid rgba(120,200,255,.12);
}

/* ===================== FAQ ===================== */
.faq{display:grid;gap:14px;max-width:920px;}
.faq-item{
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
  overflow:hidden;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{background:var(--panel-strong);border-color:var(--line-strong);}
.faq-item summary{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 22px 20px 34px;
  font-size:16px;
  font-weight:600;
  color:var(--t-1);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  position:absolute;
  left:16px;top:50%;
  width:8px;height:8px;
  margin-top:-4px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 0 rgba(43,217,232,.5);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.faq-item[open] summary::before{box-shadow:0 0 14px rgba(43,217,232,.9);transform:scale(1.08);}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-icon{
  flex:0 0 auto;
  position:relative;
  width:22px;height:22px;
  border-radius:7px;
  background:rgba(43,217,232,.10);
  border:1px solid rgba(43,217,232,.28);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--c-primary);
  border-radius:1px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:10px;height:1.6px;}
.faq-icon::after{width:1.6px;height:10px;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:rgba(43,217,232,.18);}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0;}
.faq-body{
  padding:0 22px 22px 34px;
  font-size:15px;
  line-height:1.85;
  color:var(--t-2);
  border-top:1px dashed rgba(120,200,255,.14);
  margin-top:-2px;
  padding-top:16px;
}

/* ===================== CTA 区块 ===================== */
.cta-band{padding:0 0 88px;}
.cta-card{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:32px;
  align-items:center;
  padding:48px 46px;
  border-radius:24px;
  background:var(--bg-1);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.cta-card__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.24;
}
.cta-card::before{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(100deg, rgba(5,7,15,.95) 0%, rgba(5,7,15,.82) 52%, rgba(5,7,15,.92) 100%),
    radial-gradient(520px 260px at 88% 110%, rgba(255,138,61,.22), transparent 72%);
}
.cta-card__inner{position:relative;grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:32px;align-items:center;}
.cta-card h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.32;margin-bottom:14px;}
.cta-card p{font-size:15.5px;color:var(--t-2);max-width:56ch;}
.cta-card__actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ===================== 页脚 ===================== */
.site-footer{
  position:relative;
  background:var(--bg-footer);
  padding-top:64px;
  color:var(--t-2);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.45),rgba(122,108,255,.35),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--t-3);line-height:1.8;max-width:34ch;}
.footer-contact{margin-top:18px;display:grid;gap:10px;}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13.5px;
  color:var(--t-3);
}
.footer-contact svg{width:18px;height:18px;color:var(--c-primary);flex:0 0 auto;}
.footer-col h4{
  font-size:14.5px;
  font-weight:600;
  color:var(--t-1);
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a{font-size:14px;color:var(--t-3);}
.footer-col li a:hover{color:var(--c-primary);}
.footer-box{
  padding:16px 16px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:13.5px;
  color:var(--t-3);
  line-height:1.8;
}
.footer-box b{display:block;color:var(--t-1);font-size:14px;margin-bottom:6px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 26px;
  border-top:1px solid rgba(120,200,255,.12);
  font-size:13px;
  color:var(--t-3);
}

/* ===================== 响应式 ===================== */
@media (min-width:1440px){
  :root{--container:1280px;}
}
@media (max-width:1199px){
  .nav__link{padding:0 11px;font-size:14px;}
}
@media (max-width:1023px){
  .nav__list{
    position:fixed;
    left:0;right:0;top:68px;bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:22px 24px 120px;
    background:rgba(5,8,16,.96);
    backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    overflow-y:auto;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
  }
  .nav.is-open .nav__list{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav__list li{opacity:0;transform:translateY(8px);transition:opacity .3s var(--ease),transform .3s var(--ease);}
  .nav.is-open .nav__list li{opacity:1;transform:translateY(0);}
  .nav.is-open .nav__list li:nth-child(1){transition-delay:40ms;}
  .nav.is-open .nav__list li:nth-child(2){transition-delay:80ms;}
  .nav.is-open .nav__list li:nth-child(3){transition-delay:120ms;}
  .nav.is-open .nav__list li:nth-child(4){transition-delay:160ms;}
  .nav.is-open .nav__list li:nth-child(5){transition-delay:200ms;}
  .nav__link{height:52px;font-size:16px;padding:0 16px;border-radius:12px;background:rgba(255,255,255,.03);}
  .nav__link::after{display:none;}
  .nav__link.is-active{background:rgba(43,217,232,.10);border:1px solid rgba(43,217,232,.28);}
  .nav__toggle{display:inline-flex;}
  .nav__right .btn{display:none;}
  .page-hero__inner{grid-template-columns:1fr;padding:42px 32px 40px;gap:26px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .cta-card__inner{grid-template-columns:1fr;}
  .cta-card__actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:15px;line-height:1.8;}
  .section{padding:64px 0;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;padding:24px 20px;}
  .metric + .metric{border-left:0;padding-left:6px;}
  .metric{border-top:1px solid rgba(120,200,255,.14);padding-top:14px;}
  .metric:nth-child(-n+2){border-top:0;padding-top:4px;}
  .check-list{grid-template-columns:1fr;}
  .page-hero__inner{padding:34px 22px 32px;}
  .cta-card{padding:34px 22px;}
  .section__head--row{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .faq-item summary{padding:18px 18px 18px 32px;font-size:15px;}
  .faq-body{padding:14px 18px 20px 32px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .page-hero__lead{font-size:15px;}
  .btn{width:100%;}
  .page-hero__actions .btn,
  .cta-card__actions .btn{width:100%;}
  .hero-card{padding:22px 18px;}
  .logo{font-size:15.5px;}
  .logo__mark{width:34px;height:34px;font-size:12px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-img:14px;
  --shadow:0 20px 48px rgba(3,8,20,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(760px 440px at 10% 2%, rgba(43,217,232,.12), transparent 70%),
    radial-gradient(680px 440px at 90% 6%, rgba(122,108,255,.10), transparent 72%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.04;
  background-image:linear-gradient(rgba(120,200,255,.7) 1px, transparent 1px),linear-gradient(90deg, rgba(120,200,255,.7) 1px, transparent 1px);
  background-size:56px 56px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t-1);line-height:1.32;text-wrap:balance}
p{margin:0 0 16px;text-wrap:pretty}
p:last-child{margin-bottom:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{display:block}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(43,217,232,.3);color:#04121a}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(5,7,15,.66);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(10,17,32,.88);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(3,8,20,.5);
}
.nav{display:flex;align-items:center;gap:20px;height:68px}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:800;
  color:var(--t-1);
  letter-spacing:.2px;
  white-space:nowrap;
}
.logo__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-2));
  color:#04121a;
  font-size:14px;
  font-weight:800;
  letter-spacing:.5px;
  box-shadow:0 10px 26px rgba(43,217,232,.28);
  flex:none;
}
.logo__accent{color:var(--c-primary)}
.nav__list{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  color:var(--t-2);
  border-radius:10px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:3px;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 12px var(--c-primary);
  transform:translateX(-50%) scaleX(0);
  transition:transform .22s var(--ease);
}
.nav__link:hover{color:var(--t-1);background:rgba(255,255,255,.045)}
.nav__link.is-active{color:var(--t-1)}
.nav__link.is-active::after{transform:translateX(-50%) scaleX(1)}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  color:var(--t-1);
  align-items:center;
  justify-content:center;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav__toggle:hover{border-color:var(--line-strong);background:rgba(43,217,232,.08)}
.nav__toggle svg{width:22px;height:22px}
.nav__cta-mobile{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn--primary{
  background:linear-gradient(120deg,var(--c-primary),#5BE9F2);
  color:#04121a;
  box-shadow:0 14px 34px rgba(43,217,232,.26);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 20px 46px rgba(43,217,232,.36)}
.btn--primary:active{transform:translateY(0);box-shadow:0 10px 24px rgba(43,217,232,.24)}
.btn--ghost{
  border-color:var(--line-strong);
  color:var(--t-1);
  background:rgba(255,255,255,.03);
}
.btn--ghost:hover{background:rgba(43,217,232,.1);border-color:var(--c-primary);transform:translateY(-2px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn svg{width:18px;height:18px}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero__bg{position:absolute;inset:0;z-index:0}
.page-hero__bg img{width:100%;height:100%;object-fit:cover;border-radius:0;opacity:.34}
.page-hero__bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(5,7,15,.74),rgba(5,7,15,.95)),
    radial-gradient(720px 380px at 6% 100%, rgba(43,217,232,.22), transparent 70%);
}
.page-hero__inner{padding-top:34px;padding-bottom:60px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--t-3);margin-bottom:20px}
.breadcrumb a{color:var(--t-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--t-2)}
.page-hero h1{
  font-size:clamp(28px,4.2vw,50px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:.5px;
  margin-bottom:18px;
}
.page-hero__lead{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:var(--t-2);
  margin-bottom:24px;
}
.page-hero__chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:999px;
  font-size:13.5px;
  color:var(--t-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.chip::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-primary);
  box-shadow:0 0 9px var(--c-primary);
  flex:none;
}

/* ---------- 主体布局 ---------- */
.layout{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:52px;
  align-items:start;
  padding-top:68px;
  padding-bottom:84px;
}
.toc{
  position:sticky;
  top:92px;
  padding:22px 18px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow);
}
.toc__title{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--t-3);
  margin-bottom:14px;
  padding-left:12px;
}
.toc__link{
  display:block;
  padding:9px 12px;
  font-size:14px;
  color:var(--t-2);
  border-radius:10px;
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc__link:hover{color:var(--t-1);background:rgba(255,255,255,.05)}
.toc__link.is-current{
  color:var(--t-1);
  border-left-color:var(--c-primary);
  background:rgba(43,217,232,.09);
}
.toc__tip{
  margin-top:16px;
  padding:14px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(122,108,255,.07);
  font-size:13px;
  color:var(--t-3);
  line-height:1.75;
}
.toc__tip b{display:block;color:var(--t-1);font-size:13.5px;margin-bottom:6px}

/* ---------- 分节内容 ---------- */
.sec{
  padding-bottom:48px;
  margin-bottom:48px;
  border-bottom:1px solid var(--line);
  scroll-margin-top:100px;
}
.sec:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0}
.sec__head{display:flex;align-items:center;gap:14px;margin-bottom:20px;flex-wrap:wrap}
.sec__num{
  font-size:12.5px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--c-primary);
  padding:4px 11px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:rgba(43,217,232,.08);
}
.sec h2{font-size:clamp(22px,2.6vw,32px);font-weight:700}
.sec__intro{font-size:15.5px;color:var(--t-2);margin-bottom:24px;max-width:760px}

.q-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.q-card{
  padding:22px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.q-card:hover{
  transform:translateY(-3px);
  border-color:var(--line-strong);
  background:var(--panel-strong);
  box-shadow:0 24px 60px rgba(43,217,232,.14);
}
.q-card__icon{
  width:40px;
  height:40px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(43,217,232,.1);
  color:var(--c-primary);
  margin-bottom:14px;
}
.q-card__icon svg{width:21px;height:21px}
.q-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.q-card p{font-size:14.5px;line-height:1.8;color:var(--t-2);margin:0}

.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 18px}
.check-item{
  display:flex;
  gap:12px;
  padding:15px 16px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:14.5px;
  line-height:1.75;
  color:var(--t-2);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.check-item:hover{border-color:var(--line-strong);background:var(--panel-strong)}
.check-item svg{width:18px;height:18px;color:var(--c-primary);flex:none;margin-top:5px}

.flow{position:relative}
.flow::before{
  content:"";
  position:absolute;
  left:7px;
  top:14px;
  bottom:14px;
  width:2px;
  background:linear-gradient(180deg,var(--c-primary),rgba(122,108,255,.45),transparent);
}
.flow__item{position:relative;padding:0 0 24px 44px}
.flow__item:last-child{padding-bottom:0}
.flow__item::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  width:16px;
  height:16px;
  border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--c-primary);
  box-shadow:0 0 14px rgba(43,217,232,.55);
  z-index:1;
}
.flow__title{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:16px;font-weight:600;color:var(--t-1);margin-bottom:6px}
.flow__item p{font-size:14.5px;line-height:1.8;color:var(--t-2);margin:0;max-width:640px}
.status{
  font-size:12px;
  font-weight:600;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid;
  letter-spacing:.04em;
}
.status--wait{color:var(--warn);border-color:rgba(255,194,75,.4);background:rgba(255,194,75,.1)}
.status--run{color:var(--c-primary);border-color:var(--line-strong);background:rgba(43,217,232,.1)}
.status--done{color:var(--ok);border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.1)}

.table-wrap{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  -webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;min-width:660px}
th,td{padding:15px 18px;text-align:left;font-size:14.5px;line-height:1.75;border-bottom:1px solid var(--line)}
th{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--t-3);
  font-weight:600;
  background:rgba(255,255,255,.035);
  white-space:nowrap;
}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
tbody tr:hover{background:rgba(43,217,232,.055)}
tbody tr:last-child td{border-bottom:0}
td:first-child{color:var(--t-1);font-weight:600;white-space:nowrap}

.gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.gallery figure{margin:0}
.gallery img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.gallery figure:hover img{transform:translateY(-3px);border-color:var(--line-strong)}
.gallery figcaption{margin-top:10px;font-size:13px;line-height:1.7;color:var(--t-3)}

.faq details{
  border:1px solid var(--line);
  border-radius:14px;
  background:var(--panel);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq details:hover{border-color:var(--line-strong)}
.faq details[open]{border-color:var(--line-strong);background:var(--panel-strong)}
.faq summary{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 20px;
  cursor:pointer;
  font-size:15.5px;
  font-weight:600;
  color:var(--t-1);
  list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 10px var(--c-primary);
  flex:none;
}
.faq summary::after{
  content:"";
  width:14px;
  height:14px;
  flex:none;
  margin-left:auto;
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 14px no-repeat;
  transition:transform .22s var(--ease);
}
.faq details[open] summary::after{
  transform:rotate(180deg);
  background:linear-gradient(var(--c-primary),var(--c-primary)) center/14px 2px no-repeat;
}
.faq__body{padding:0 20px 18px 40px;font-size:15px;line-height:1.85;color:var(--t-2)}

/* ---------- CTA ---------- */
.cta-section{padding-bottom:88px}
.cta-band{
  position:relative;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  padding:44px;
  border-radius:24px;
  border:1px solid var(--line-strong);
  background:
    linear-gradient(120deg,rgba(43,217,232,.13),rgba(122,108,255,.12)),
    var(--bg-1);
  box-shadow:var(--shadow);
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px;
  top:-90px;
  width:280px;
  height:280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(43,217,232,.22),transparent 68%);
  pointer-events:none;
}
.cta-band__text{position:relative;z-index:1;max-width:620px}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--t-2);margin:0}
.cta-band__actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  background:var(--bg-footer);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.55),rgba(122,108,255,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding:64px 0 40px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14.5px;line-height:1.85;color:var(--t-2);max-width:330px}
.footer-contact{margin-top:16px}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--t-2);
  margin-bottom:10px;
}
.footer-contact svg{width:18px;height:18px;color:var(--c-primary);flex:none;margin-top:5px}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14.5px;color:var(--t-2);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--c-primary);padding-left:4px}
.footer-box{
  font-size:13.5px;
  line-height:1.85;
  color:var(--t-3);
  padding:16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:var(--panel);
}
.footer-box b{display:block;color:var(--t-1);font-size:14px;margin-bottom:6px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav__list{
    position:fixed;
    left:0;
    right:0;
    top:68px;
    bottom:0;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    margin-left:0;
    padding:20px 20px 120px;
    background:rgba(6,10,20,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-10px);
    opacity:0;
    visibility:hidden;
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }
  .nav__list.is-open{opacity:1;visibility:visible;transform:none}
  .nav__list li{opacity:0;transform:translateY(8px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
  .nav__list.is-open li{opacity:1;transform:none}
  .nav__list.is-open li:nth-child(1){transition-delay:.04s}
  .nav__list.is-open li:nth-child(2){transition-delay:.08s}
  .nav__list.is-open li:nth-child(3){transition-delay:.12s}
  .nav__list.is-open li:nth-child(4){transition-delay:.16s}
  .nav__list.is-open li:nth-child(5){transition-delay:.2s}
  .nav__list.is-open li:nth-child(6){transition-delay:.24s}
  .nav__link{display:block;padding:14px 14px;font-size:16px;border-radius:12px;background:rgba(255,255,255,.03)}
  .nav__link::after{left:14px;transform:scaleX(0);bottom:8px}
  .nav__link.is-active::after{transform:scaleX(1)}
  .nav__link.is-active::after{left:14px;transform:none}
  .nav__link.is-active::after{transform:translateX(0)}
  .nav__cta-mobile{display:block;margin-top:8px}
  .nav__cta-mobile .btn{width:100%;height:50px}
  .nav__toggle{display:inline-flex}
  .nav__right .btn--primary{display:none}
  .layout{grid-template-columns:1fr;gap:34px;padding-top:48px;padding-bottom:60px}
  .toc{position:static;padding:14px 16px;box-shadow:none}
  .toc__title{padding-left:0}
  .toc__list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
  .toc__link{
    white-space:nowrap;
    border-left:0;
    padding:8px 14px;
    border-radius:999px;
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
  }
  .toc__link.is-current{background:rgba(43,217,232,.12);border-color:var(--line-strong)}
  .toc__tip{display:none}
  .cta-section{padding-bottom:64px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .page-hero__inner{padding-top:26px;padding-bottom:44px}
  .page-hero__lead{font-size:15.5px}
  .q-grid{grid-template-columns:1fr}
  .checklist{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 32px;gap:28px}
  .cta-band{padding:28px;border-radius:20px}
  .sec{padding-bottom:36px;margin-bottom:36px}
  .faq__body{padding:0 18px 16px 18px}
}
@media (max-width:520px){
  body{font-size:15px;line-height:1.8}
  .logo{font-size:14.5px}
  .logo__mark{width:34px;height:34px;font-size:13px}
  .page-hero h1{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .flow__item{padding-left:36px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#05070F;
  --bg-1:#0A1120;
  --bg-footer:#04060C;
  --panel:rgba(255,255,255,.045);
  --panel-strong:rgba(255,255,255,.075);
  --blur:14px;
  --line:rgba(120,200,255,.16);
  --line-strong:rgba(43,217,232,.42);
  --c-primary:#2BD9E8;
  --c-primary-2:#7A6CFF;
  --c-accent:#FF8A3D;
  --t-1:#E9F2FF;
  --t-2:#A9B8D0;
  --t-3:#6E809B;
  --ok:#34D399;
  --warn:#FFC24B;
  --err:#FF6B6B;
  --r-card:18px;
  --r-btn:12px;
  --r-input:12px;
  --r-img:14px;
  --shadow-card:0 20px 48px rgba(3,8,20,.55);
  --shadow-hover:0 24px 60px rgba(43,217,232,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
  --gutter:24px;
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-2);
  background:var(--bg-0);
  letter-spacing:0;
  text-wrap:pretty;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 620px at 6% -8%, rgba(43,217,232,.13), transparent 62%),
    radial-gradient(820px 560px at 98% 2%, rgba(122,108,255,.11), transparent 64%),
    repeating-linear-gradient(0deg, rgba(120,200,255,.035) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(120,200,255,.035) 0 1px, transparent 1px 64px);
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--t-1)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--t-1);text-wrap:balance;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{width:24px;height:24px;flex:none}
::selection{background:rgba(43,217,232,.32);color:#fff}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter);position:relative;z-index:1}
.site-header,.site-footer,main{position:relative;z-index:1}
section{position:relative}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  transition:background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(5,7,15,.78);
  backdrop-filter:blur(var(--blur));
  -webkit-backdrop-filter:blur(var(--blur));
  border-bottom:1px solid var(--line);
  box-shadow:0 12px 34px rgba(2,5,14,.6);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--t-1);
  font-weight:800;
  font-size:17px;
  letter-spacing:.2px;
  white-space:nowrap;
}
.logo__mark{
  display:inline-grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:11px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.5px;
  color:#03151A;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  box-shadow:0 8px 22px rgba(43,217,232,.28);
  text-transform:lowercase;
}
.logo__accent{color:var(--c-primary)}
.nav__list{display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  color:var(--t-2);
  border-radius:10px;
  transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav__link:hover{color:var(--t-1);background:var(--panel)}
.nav__link.is-active{color:var(--t-1);font-weight:600}
.nav__link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--c-primary);
  box-shadow:0 0 12px rgba(43,217,232,.9);
}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--t-1);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav__toggle:hover{background:var(--panel-strong);border-color:var(--line-strong)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.btn--primary{
  color:#03151A;
  background:linear-gradient(135deg,var(--c-primary),#5EE9F5 60%,var(--c-primary-2));
  box-shadow:0 14px 34px rgba(43,217,232,.26);
}
.btn--primary:hover{
  color:#03151A;
  transform:translateY(-2px);
  box-shadow:0 20px 44px rgba(43,217,232,.38);
}
.btn--ghost{
  color:var(--t-1);
  background:var(--panel);
  border-color:var(--line);
}
.btn--ghost:hover{
  background:var(--panel-strong);
  border-color:var(--line-strong);
  transform:translateY(-2px);
}
.btn:active{transform:translateY(0);box-shadow:none}
.btn--lg{padding:15px 30px;font-size:16px}

/* ============ 面包屑 / 页头 ============ */
.page-head{
  position:relative;
  padding:56px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(5,7,15,.72) 0%, rgba(5,7,15,.9) 58%, var(--bg-0) 100%),
    radial-gradient(760px 420px at 12% 20%, rgba(43,217,232,.18), transparent 62%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.5),transparent);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--t-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span.sep{opacity:.55}
.page-head__inner{max-width:840px}
.page-head h1{
  font-size:clamp(28px,4.2vw,52px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:.3px;
}
.page-head h1 .hl{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.page-head__lead{
  margin-top:20px;
  font-size:17px;
  line-height:1.9;
  color:var(--t-2);
  max-width:720px;
}
.page-head__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--t-2);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
}
.tag svg{width:15px;height:15px;color:var(--c-primary)}
.tag--accent{color:#FFE7D6;border-color:rgba(255,138,61,.4);background:rgba(255,138,61,.12)}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-y) 0}
.section--alt{background:linear-gradient(180deg,var(--bg-1),rgba(10,17,32,.45));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:760px;margin-bottom:44px}
.section__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:1.4px;
  text-transform:uppercase;
  color:var(--c-primary);
  margin-bottom:14px;
}
.section__eyebrow::before{
  content:"";
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),transparent);
}
.section h2{font-size:clamp(22px,2.6vw,34px);line-height:1.3;font-weight:700}
.section__desc{margin-top:16px;font-size:16px;color:var(--t-2)}

/* ============ 时间线 ============ */
.timeline{
  position:relative;
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:22px;
  margin-top:12px;
}
.timeline::before{
  content:"";
  position:absolute;
  top:27px;
  left:8%;
  right:8%;
  border-top:2px dashed rgba(43,217,232,.3);
}
.tl-node{
  position:relative;
  padding-top:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.tl-node__num{
  position:relative;
  z-index:1;
  display:grid;
  place-items:center;
  width:56px;height:56px;
  border-radius:50%;
  font-weight:800;
  font-size:16px;
  color:var(--c-primary);
  background:var(--bg-1);
  border:1px solid var(--line-strong);
  box-shadow:0 0 0 8px rgba(5,7,15,.9);
  font-variant-numeric:tabular-nums;
}
.tl-node__body{
  margin-top:20px;
  width:100%;
  padding:20px 18px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.tl-node__body:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.tl-node__body h3{font-size:17px;font-weight:600;line-height:1.4}
.tl-node__body p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--t-2)}
.tl-node__meta{
  display:inline-block;
  margin-top:14px;
  font-size:13px;
  color:var(--t-3);
  font-variant-numeric:tabular-nums;
}

/* ============ 对比表 ============ */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:var(--shadow-card);
  -webkit-overflow-scrolling:touch;
}
table{width:100%;border-collapse:collapse;min-width:700px}
thead th{
  position:sticky;
  top:0;
  z-index:2;
  text-align:left;
  padding:18px 20px;
  font-size:14px;
  font-weight:700;
  color:var(--t-1);
  background:rgba(9,15,28,.96);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
tbody th,tbody td{
  padding:18px 20px;
  font-size:15px;
  text-align:left;
  vertical-align:top;
  border-bottom:1px solid rgba(120,200,255,.09);
}
tbody th{color:var(--t-1);font-weight:600;white-space:nowrap}
tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
tbody tr:hover{background:rgba(43,217,232,.05)}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
.cell-warn{color:#FFC7C7}
.cell-ok{color:#A9F3DA}
.cell-ok span{display:inline-flex;align-items:center;gap:8px}
.cell-ok svg{width:16px;height:16px;color:var(--ok)}
.cell-warn span{display:inline-flex;align-items:center;gap:8px}
.cell-warn svg{width:16px;height:16px;color:var(--err)}
.table-note{
  margin-top:18px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  justify-content:space-between;
  font-size:14px;
  color:var(--t-3);
}

/* ============ 风险信号卡 ============ */
.signal-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.signal{
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:26px 24px;
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
  transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.signal:hover{
  transform:translateY(-4px);
  background:var(--panel-strong);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-hover);
}
.signal__icon{
  display:grid;
  place-items:center;
  width:46px;height:46px;
  border-radius:14px;
  color:var(--c-primary);
  background:rgba(43,217,232,.1);
  border:1px solid rgba(43,217,232,.28);
}
.signal h3{font-size:17px;font-weight:600;line-height:1.4}
.signal p{font-size:14px;line-height:1.8;color:var(--t-2)}
.signal__level{
  margin-top:auto;
  font-size:13px;
  color:var(--warn);
  display:inline-flex;
  align-items:center;
  gap:7px;
}
.signal__level::before{
  content:"";
  width:7px;height:7px;border-radius:50%;
  background:var(--warn);
  box-shadow:0 0 10px rgba(255,194,75,.7);
}
.signal--calm .signal__level{color:var(--ok)}
.signal--calm .signal__level::before{background:var(--ok);box-shadow:0 0 10px rgba(52,211,153,.7)}

/* ============ 图文区块 ============ */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.split__media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.split__media img{width:100%;height:100%;object-fit:cover;border-radius:0;aspect-ratio:16/10}
.split__media::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:56%;
  background:linear-gradient(180deg,transparent,rgba(5,7,15,.86));
}
.split__media figcaption{
  position:absolute;
  left:20px;right:20px;bottom:16px;
  font-size:13px;
  color:var(--t-2);
  z-index:2;
}
.check-list{display:grid;gap:14px;margin-top:26px}
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:14px 16px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:15px;
  line-height:1.7;
}
.check-list svg{width:20px;height:20px;color:var(--c-primary);margin-top:3px}
.check-list b{color:var(--t-1);font-weight:600}

/* ============ FAQ ============ */
.faq{display:grid;gap:14px;margin-top:8px}
.faq details{
  border-radius:var(--r-card);
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(var(--blur));
  overflow:hidden;
  transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.faq details[open]{border-color:var(--line-strong);background:var(--panel-strong)}
.faq summary{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--t-1);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:3px;
  background:var(--c-primary);
  box-shadow:0 0 10px rgba(43,217,232,.7);
  flex:none;
  transition:box-shadow var(--dur) var(--ease);
}
.faq details[open] summary::before{box-shadow:0 0 18px rgba(43,217,232,1)}
.faq summary .sign{
  margin-left:auto;
  position:relative;
  width:18px;height:18px;
  flex:none;
}
.faq summary .sign::before,
.faq summary .sign::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--t-2);
  border-radius:2px;
  transition:transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.faq summary .sign::before{width:14px;height:1.6px;transform:translate(-50%,-50%)}
.faq summary .sign::after{width:1.6px;height:14px;transform:translate(-50%,-50%)}
.faq details[open] summary .sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq details[open] summary .sign::before{background:var(--c-primary)}
.faq__answer{
  padding:0 24px 22px 48px;
  font-size:15px;
  line-height:1.85;
  color:var(--t-2);
}

/* ============ CTA ============ */
.cta-band{padding:0 0 var(--sec-y)}
.cta-card{
  position:relative;
  overflow:hidden;
  padding:52px 48px;
  border-radius:24px;
  background:
    linear-gradient(120deg, rgba(43,217,232,.14), rgba(122,108,255,.12) 55%, rgba(255,138,61,.1)),
    var(--bg-1);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  display:grid;
  grid-template-columns:1.4fr .6fr;
  gap:36px;
  align-items:center;
}
.cta-card::before{
  content:"";
  position:absolute;
  inset:-40% -10% auto auto;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(43,217,232,.24), transparent 66%);
  pointer-events:none;
}
.cta-card h2{font-size:clamp(22px,2.4vw,30px)}
.cta-card p{margin-top:14px;font-size:16px;color:var(--t-2);max-width:560px}
.cta-card__actions{display:flex;flex-direction:column;gap:14px;align-items:stretch}
.cta-card__actions .btn{width:100%}
.cta-card__hint{font-size:13px;color:var(--t-3);text-align:center}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-footer);
  border-top:1px solid var(--line);
  padding:68px 0 0;
  margin-top:0;
}
.site-footer::before{
  content:"";
  display:block;
  height:1px;
  margin-top:-69px;
  margin-bottom:68px;
  background:linear-gradient(90deg,transparent,rgba(43,217,232,.55),rgba(122,108,255,.4),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:var(--t-2);max-width:300px}
.footer-contact{margin-top:22px;display:grid;gap:12px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--t-3)}
.footer-contact svg{width:18px;height:18px;color:var(--c-primary);margin-top:3px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--t-1);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:var(--t-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-box{
  padding:18px;
  border-radius:14px;
  background:var(--panel);
  border:1px solid var(--line);
  font-size:13px;
  line-height:1.85;
  color:var(--t-2);
}
.footer-box b{display:block;color:var(--t-1);font-size:14px;margin-bottom:8px}
.footer-bottom{
  margin-top:52px;
  padding:22px 0;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  font-size:13px;
  color:var(--t-3);
}

/* ============ 响应式 ============ */
@media (min-width:1440px){
  .container{max-width:1280px}
}
@media (max-width:1199px){
  .signal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
  .timeline::before{display:none}
  .tl-node{align-items:flex-start;text-align:left}
  .tl-node__num{box-shadow:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  :root{--sec-y:64px}
  .nav__toggle{display:inline-flex}
  .nav__list{
    position:fixed;
    inset:68px 0 0 0;
    z-index:55;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:28px var(--gutter) 120px;
    background:rgba(5,7,15,.94);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    overflow-y:auto;
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
  }
  .nav__list.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav__list li{opacity:0;transform:translateY(8px);transition:opacity 320ms var(--ease), transform 320ms var(--ease)}
  .nav__list.is-open li{opacity:1;transform:translateY(0)}
  .nav__list.is-open li:nth-child(1){transition-delay:40ms}
  .nav__list.is-open li:nth-child(2){transition-delay:80ms}
  .nav__list.is-open li:nth-child(3){transition-delay:120ms}
  .nav__list.is-open li:nth-child(4){transition-delay:160ms}
  .nav__list.is-open li:nth-child(5){transition-delay:200ms}
  .nav__link{display:block;padding:16px 18px;font-size:17px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}
  .nav__link.is-active::after{display:none}
  .nav__link.is-active{border-color:var(--line-strong);color:var(--c-primary)}
  .nav__right .btn--primary{display:none}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-card{grid-template-columns:1fr;padding:40px 32px}
}
@media (max-width:767px){
  :root{--gutter:16px;--sec-y:48px}
  body{font-size:15px;line-height:1.8}
  .page-head{padding:36px 0 52px}
  .page-head__lead{font-size:16px}
  .timeline{grid-template-columns:1fr;gap:18px;position:relative;padding-left:26px}
  .timeline::before{
    display:block;
    top:6px;bottom:6px;left:9px;right:auto;
    width:0;height:auto;
    border-top:none;
    border-left:2px dashed rgba(43,217,232,.3);
  }
  .tl-node{align-items:flex-start;text-align:left;padding-left:22px}
  .tl-node__num{
    position:absolute;
    left:-26px;top:0;
    width:34px;height:34px;
    font-size:13px;
  }
  .tl-node__body{margin-top:12px;padding:18px 16px}
  .signal-grid{grid-template-columns:1fr}
  .table-scroll{position:relative}
  table{min-width:620px}
  .faq summary{padding:18px 18px;font-size:15px;gap:12px}
  .faq__answer{padding:0 18px 20px 42px}
  .cta-card{padding:32px 22px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .btn{width:100%;padding:14px 20px}
  .nav__right{gap:8px}
  .logo{font-size:15px;gap:8px}
  .logo__mark{width:32px;height:32px;font-size:12px}
  .page-head__tags .tag{font-size:12px;padding:6px 12px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}