/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --brand:#6E4DFF;
  --brand-2:#2FE0C8;
  --accent:#FF8A3D;
  --bg:#0D0918;
  --bg-2:#150E2A;
  --card:#1C1436;
  --card-hover:#241A44;
  --text:#F2EEFF;
  --text-2:rgba(242,238,255,.66);
  --text-3:rgba(242,238,255,.42);
  --line:rgba(255,255,255,.12);
  --line-2:rgba(255,255,255,.08);
  --r-card:14px;
  --r-sm:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-card:0 6px 20px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(110,77,255,.28);
  --shadow-nav:0 8px 24px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --rail-pad:clamp(20px, calc((100vw - 1136px) / 2), 160px);
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:-0.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.32;letter-spacing:-0.01em}
p{margin:0}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:3px;border-radius:8px}
::selection{background:rgba(110,77,255,.45);color:#fff}

/* ===================== 容器与分区 ===================== */
.container-x{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
@media (min-width:768px){.container-x{padding-inline:32px}}
.section{padding:72px 0;position:relative}
.section--alt{background:var(--bg-2);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
@media (max-width:767px){.section{padding:48px 0}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.34}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:660px;line-height:1.85}
.text-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand-2);white-space:nowrap}
.text-link i{font-size:12px;transition:transform .2s var(--ease)}
.text-link:hover{color:#fff}
.text-link:hover i{transform:translateX(4px)}

/* ===================== 通用组件 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn i{font-size:13px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;box-shadow:0 8px 22px rgba(110,77,255,.35);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(110,77,255,.5)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{color:#fff;transform:translateY(-2px);border-color:rgba(47,224,200,.75);box-shadow:0 10px 26px rgba(47,224,200,.2)}
.btn-ghost:active{transform:translateY(1px)}

.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;line-height:1.6;letter-spacing:.02em;white-space:nowrap}
.tag--brand{background:rgba(110,77,255,.18);color:#C7B8FF}
.tag--teal{background:rgba(47,224,200,.14);color:#8FF3E5}
.tag--accent{background:rgba(255,138,61,.16);color:#FFC69B}

/* ===================== 导航 ===================== */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:1050;
  background:rgba(13,9,24,.45);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-2);
  transition:background .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-stuck{background:rgba(13,9,24,.92);box-shadow:var(--shadow-nav)}
.nav-bar{display:flex;align-items:center;gap:20px;min-height:74px;transition:min-height .22s var(--ease)}
.site-header.is-stuck .nav-bar{min-height:64px}

.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand__mark{
  width:38px;height:38px;border-radius:var(--r-img);
  display:grid;place-items:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 6px 18px rgba(110,77,255,.4);
}
.brand__text{display:flex;flex-direction:column;line-height:1.14}
.brand__main{font-size:16.5px;font-weight:800;letter-spacing:.01em;color:var(--text)}
.brand__sub{font-size:10px;font-weight:500;letter-spacing:.2em;color:var(--text-3)}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
.nav-link{position:relative;padding:9px 14px;border-radius:var(--r-sm);font-size:15px;color:var(--text-2);transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:#fff;border-color:rgba(110,77,255,.65);background:rgba(110,77,255,.16)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid var(--line);place-items:center;color:var(--text)}

.nav-search{
  position:absolute;top:calc(100% + 10px);right:32px;width:320px;
  background:rgba(21,14,42,.96);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;box-shadow:0 18px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.nav-search.is-open{opacity:1;visibility:visible;transform:none}
.nav-search label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px}
.nav-search__row{display:flex;gap:8px}
.nav-search input{
  flex:1;min-width:0;padding:10px 14px;border-radius:var(--r-sm);
  background:rgba(13,9,24,.72);border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(47,224,200,.18)}
.nav-search .btn{padding:10px 18px;font-size:14px}

@media (max-width:991px){
  .nav-links{
    position:fixed;top:82px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
    background:rgba(16,11,30,.96);
    -webkit-backdrop-filter:blur(18px) saturate(140%);backdrop-filter:blur(18px) saturate(140%);
    border:1px solid var(--line);border-radius:16px;padding:12px;
    box-shadow:0 18px 40px rgba(0,0,0,.55);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:none}
  .nav-link{padding:12px 14px}
  .nav-link.is-active::after{left:14px;right:auto;width:22px;bottom:8px}
  .nav-toggle{display:grid}
  .nav-search{right:20px;left:20px;width:auto}
  .nav-actions .btn-primary{padding:10px 18px;font-size:14px}
}
@media (max-width:575px){
  .nav-bar{min-height:66px;gap:12px}
  .brand__mark{width:34px;height:34px;font-size:17px}
  .brand__main{font-size:15px}
  .brand__sub{font-size:9px}
  .nav-actions .btn-primary{display:none}
}

/* ===================== Hero ===================== */
.hero{
  position:relative;display:flex;align-items:flex-end;overflow:hidden;
  min-height:clamp(580px,84vh,780px);
  padding:140px 0 64px;
}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(13,9,24,.97) 0%,rgba(13,9,24,.86) 36%,rgba(13,9,24,.44) 70%,rgba(13,9,24,.88) 100%),
    linear-gradient(180deg,rgba(13,9,24,.72) 0%,rgba(13,9,24,.24) 42%,rgba(13,9,24,.98) 100%);
}
.hero__inner{position:relative;z-index:2;display:flex;align-items:flex-end;justify-content:space-between;gap:28px}
.hero__panel{max-width:56%}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 15px;margin-bottom:20px;border-radius:var(--r-pill);
  border:1px solid rgba(47,224,200,.32);background:rgba(47,224,200,.09);
  font-size:13px;letter-spacing:.06em;color:var(--brand-2);
}
.hero__title{font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.24}
.hero__sub{margin-top:18px;font-size:17px;line-height:1.9;color:var(--text-2);max-width:640px}
.hero__actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero__pill{
  display:inline-flex;align-items:center;gap:10px;flex-shrink:0;
  padding:12px 20px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:14px;color:var(--text-2);white-space:nowrap;
}
.hero__pill .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,224,200,.18)}
@media (max-width:991px){
  .hero{padding:120px 0 48px;min-height:auto}
  .hero__inner{flex-direction:column;align-items:flex-start;gap:22px}
  .hero__panel{max-width:100%}
}
@media (max-width:575px){
  .hero__title{font-size:29px}
  .hero__sub{font-size:15.5px}
  .hero__actions .btn{flex:1 1 auto}
}

/* ===================== 横滑片库 ===================== */
.rail-wrap{position:relative;margin-top:34px}
.rail-wrap::before,.rail-wrap::after{content:"";position:absolute;top:0;bottom:16px;width:56px;z-index:3;pointer-events:none}
.rail-wrap::before{left:0;background:linear-gradient(90deg,var(--bg),rgba(13,9,24,0))}
.rail-wrap::after{right:0;background:linear-gradient(270deg,var(--bg),rgba(13,9,24,0))}
.rail{
  display:flex;gap:20px;overflow-x:auto;overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;scrollbar-width:none;
  padding:4px var(--rail-pad) 20px;
}
.rail::-webkit-scrollbar{display:none}
.rail-card{
  position:relative;flex:0 0 236px;scroll-snap-align:start;
  border-radius:var(--r-card);overflow:hidden;
  background:var(--card);border:1px solid var(--line-2);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.5)}
.rail-card:focus-visible{outline-offset:2px}
.rail-card__media{position:relative;aspect-ratio:3/4;overflow:hidden}
.rail-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rail-card:hover .rail-card__media img{transform:scale(1.06)}
.rail-card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,9,24,.05) 34%,rgba(13,9,24,.55) 62%,rgba(13,9,24,.95) 100%);
}
.rail-card__badge{position:absolute;top:12px;left:12px;z-index:2}
.rail-card__title{
  position:absolute;left:14px;right:14px;bottom:14px;z-index:2;
  font-size:16px;font-weight:700;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-nav{display:flex;gap:10px}
.rail-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--text-2);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
}
.rail-btn:hover{color:#fff;border-color:rgba(110,77,255,.7);background:rgba(110,77,255,.22)}
.rail-btn[disabled]{opacity:.35;cursor:default}
@media (max-width:991px){
  .rail-card{flex:0 0 196px}
  .rail-wrap::before,.rail-wrap::after{width:28px}
}
@media (max-width:767px){
  .rail{gap:14px}
  .rail-card{flex:0 0 158px}
  .rail-card__title{font-size:14.5px}
  .rail-nav{display:none}
}
@media (max-width:575px){
  .rail-card{flex:0 0 148px}
}

/* ===================== 三列功能卡（序号描边） ===================== */
.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:38px}
.feature-card{
  position:relative;background:var(--card);border:1px solid var(--line-2);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);background:var(--card-hover);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.45)}
.feature-card__media{position:relative;aspect-ratio:16/10;overflow:hidden}
.feature-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.feature-card:hover .feature-card__media img{transform:scale(1.05)}
.feature-card__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,9,24,0) 40%,rgba(28,20,54,.92) 100%)}
.feature-card__num{
  position:absolute;left:16px;bottom:-6px;z-index:2;
  font-size:62px;font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;
  color:transparent;-webkit-text-stroke:1.6px rgba(255,138,61,.9);
}
.feature-card__body{padding:20px 22px 24px}
.feature-card__title{font-size:19px;font-weight:700;line-height:1.42}
.feature-card__desc{
  margin-top:10px;font-size:14.8px;color:var(--text-2);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
@media (max-width:991px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}}
@media (max-width:575px){.feature-grid{grid-template-columns:1fr}}

/* ===================== 最新信息（CMS） ===================== */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:36px}
.news-card{
  position:relative;padding:22px 22px 20px;
  background:var(--card);border:1px solid var(--line-2);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);background:var(--card-hover);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.45)}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.news-card__time{font-size:13px;color:var(--text-3)}
.news-card__title{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__desc{
  margin-top:10px;font-size:14.8px;color:var(--text-2);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__more{display:inline-flex;align-items:center;gap:7px;margin-top:16px;font-size:14px;font-weight:600;color:var(--brand-2)}
.news-card__more i{font-size:12px;transition:transform .2s var(--ease)}
.news-card:hover .news-card__more i{transform:translateX(4px)}
.news-card__hit{position:absolute;inset:0;z-index:3;border-radius:var(--r-card)}
.empty-state{
  grid-column:1/-1;text-align:center;padding:52px 24px;
  border:1px dashed var(--line);border-radius:var(--r-card);color:var(--text-2);
}
.empty-state p{font-size:15.5px}
.empty-state .btn{margin-top:18px}

/* ===================== 图文分栏 ===================== */
.split{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:48px;align-items:center}
.split__media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--shadow-card)}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split__media::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,rgba(110,77,255,.16),rgba(13,9,24,.55) 78%)}
.split__body{min-width:0}
.check-list{margin-top:26px;display:flex;flex-direction:column;gap:18px}
.check-list li{display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-card);background:var(--card);border:1px solid var(--line-2);transition:background .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
.check-list li:hover{background:var(--card-hover);border-color:rgba(47,224,200,.35);transform:translateX(4px)}
.check-list__idx{
  flex:0 0 auto;width:38px;height:38px;border-radius:var(--r-sm);
  display:grid;place-items:center;font-size:14px;font-weight:800;
  color:var(--accent);background:rgba(255,138,61,.12);border:1px solid rgba(255,138,61,.28);
  font-variant-numeric:tabular-nums;
}
.check-list h3{font-size:17px;font-weight:700;line-height:1.45}
.check-list p{margin-top:6px;font-size:14.5px;color:var(--text-2);line-height:1.8}
@media (max-width:991px){.split{grid-template-columns:1fr;gap:32px}}

/* ===================== 宽窄混排 ===================== */
.mosaic{display:grid;grid-template-columns:1.5fr 1fr;gap:20px;margin-top:36px}
.mosaic-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  background:var(--card);border:1px solid var(--line-2);box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mosaic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.45)}
.mosaic-card--wide{grid-column:1/2;grid-row:1/3;display:flex;flex-direction:column}
.mosaic-card--wide .mosaic-card__media{position:relative;aspect-ratio:16/9;overflow:hidden}
.mosaic-card--wide .mosaic-card__media img{width:100%;height:100%;object-fit:cover}
.mosaic-card--wide .mosaic-card__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,9,24,0) 35%,rgba(28,20,54,.95) 100%)}
.mosaic-card__body{padding:22px}
.mosaic-card--wide .mosaic-card__body{padding:26px 26px 30px}
.mosaic-card__title{font-size:20px;font-weight:700;line-height:1.42}
.mosaic-card__desc{margin-top:10px;font-size:14.8px;color:var(--text-2);line-height:1.85}
.mosaic-card--narrow{display:flex;gap:16px;align-items:center;padding:18px 20px}
.mosaic-card--narrow .mosaic-card__thumb{flex:0 0 92px;width:92px;height:92px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line-2)}
.mosaic-card--narrow .mosaic-card__thumb img{width:100%;height:100%;object-fit:cover}
.mosaic-card--narrow .mosaic-card__title{font-size:17px}
.mosaic-card--narrow .mosaic-card__desc{font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@media (max-width:991px){
  .mosaic{grid-template-columns:1fr}
  .mosaic-card--wide{grid-column:auto;grid-row:auto}
}

/* ===================== CTA 带 ===================== */
.cta-band{position:relative;overflow:hidden;padding:96px 0;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.cta-band__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.cta-band__veil{position:absolute;inset:0;background:radial-gradient(120% 90% at 50% 40%,rgba(110,77,255,.34) 0%,rgba(13,9,24,.94) 68%)}
.cta-band__inner{position:relative;z-index:2;text-align:center;max-width:720px;margin-inline:auto}
.cta-band__inner h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.34}
.cta-band__inner p{margin-top:16px;font-size:16px;color:var(--text-2);line-height:1.9}
.cta-band__inner .btn{margin-top:32px}
@media (max-width:767px){.cta-band{padding:64px 0}}

/* ===================== FAQ ===================== */
.faq-list{margin-top:36px;display:flex;flex-direction:column;gap:14px;max-width:920px}
.faq-item{
  background:var(--card);border:1px solid var(--line-2);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item:hover{background:var(--card-hover)}
.faq-item.is-open{border-color:rgba(110,77,255,.5)}
.faq-q{
  position:relative;width:100%;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  font-size:17px;font-weight:700;line-height:1.5;color:var(--text);
}
.faq-item.is-open .faq-q{padding-left:26px}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:14px;top:22px;bottom:22px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--accent),var(--brand));
}
.faq-q i{flex:0 0 auto;font-size:14px;color:var(--text-3);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand-2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:15.2px;line-height:1.9;color:var(--text-2)}
.faq-item.is-open .faq-q{padding-left:26px}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line-2);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand__mark{width:36px;height:36px;font-size:18px}
.footer-about{font-size:14.5px;color:var(--text-2);line-height:1.9;max-width:340px}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{display:inline-block;font-size:14px;color:var(--text-2);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line-2);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:center;
  font-size:13px;color:var(--text-3);text-align:center;
}
@media (max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col--brand{grid-column:1/-1}
}
@media (max-width:575px){
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:48px 0 22px}
}

/* ===================== 入场动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --bg:#0D0918;
  --bg-2:#150E2A;
  --card:#1C1436;
  --card-hover:#241A44;
  --primary:#6E4DFF;
  --accent:#2FE0C8;
  --warm:#FF8A3D;
  --text:#F2EEFF;
  --text-2:rgba(242,238,255,.66);
  --text-3:rgba(242,238,255,.42);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --r-card:14px;
  --r-sm:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 6px 20px rgba(0,0,0,.35);
  --sh-hover:0 14px 34px rgba(110,77,255,.28);
  --sh-nav:0 8px 24px rgba(0,0,0,.45);
  --grad:linear-gradient(135deg,#6E4DFF 0%,#2FE0C8 100%);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:-0.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out,background-color .2s ease-out,transform .2s ease-out;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.35;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.container-x{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .container-x{padding:0 32px;} }

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  background:rgba(13,9,24,.45);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  transition:background-color .24s ease-out,box-shadow .24s ease-out,border-color .24s ease-out;
}
.site-header.is-scrolled{
  background:rgba(13,9,24,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-nav);
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:76px;
  transition:min-height .24s ease-out;
}
.site-header.is-scrolled .nav-bar{min-height:64px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand__mark{
  width:40px;height:40px;
  flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--grad);
  color:#fff;
  font-weight:800;
  font-size:19px;
  box-shadow:0 8px 20px rgba(110,77,255,.35);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__main{font-size:17px;font-weight:800;color:var(--text);}
.brand__sub{font-size:10.5px;letter-spacing:.16em;color:var(--text-2);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06);}
.nav-link.is-active{color:var(--text);}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--grad);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  cursor:pointer;
  transition:border-color .2s ease-out,color .2s ease-out,background-color .2s ease-out;
}
.icon-btn:hover{color:var(--accent);border-color:rgba(47,224,200,.5);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  cursor:pointer;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(110,77,255,.28);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(110,77,255,.42);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{color:var(--accent);border-color:rgba(47,224,200,.55);transform:translateY(-2px);}
.btn-sm{padding:8px 16px;font-size:13.5px;}

.nav-search{
  display:none;
  border-top:1px solid var(--line-soft);
  background:rgba(13,9,24,.96);
  padding:16px 0;
}
.nav-search.is-open{display:block;}
.nav-search label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:10px;}
.nav-search__row{display:flex;gap:10px;}
.nav-search input{
  flex:1;
  min-width:0;
  padding:11px 16px;
  border-radius:var(--r-sm);
  background:var(--bg-2);
  border:1px solid var(--line);
  color:var(--text);
  font-size:15px;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,224,200,.16);}

/* ---------- 文章头图 ---------- */
.article-hero{
  position:relative;
  height:300px;
  margin-top:0;
  background-image:linear-gradient(100deg,rgba(13,9,24,.94) 0%,rgba(21,14,42,.78) 48%,rgba(110,77,255,.42) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  display:flex;
  align-items:flex-end;
}
.article-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(0deg,rgba(13,9,24,.96) 0%,rgba(13,9,24,0) 60%);
}
.hero-inner{position:relative;z-index:2;padding-bottom:34px;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(47,224,200,.35);
  background:rgba(47,224,200,.10);
  color:var(--accent);
  font-size:13px;
  font-weight:700;
  margin-bottom:14px;
}
.hero-title-line{font-size:30px;font-weight:800;max-width:720px;color:var(--text);}

/* ---------- 悬浮信息卡 ---------- */
.info-wrap{position:relative;z-index:5;margin-top:-72px;padding-bottom:8px;}
.info-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:28px 30px;
}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:14px;}
.breadcrumb-x a{color:var(--text-2);}
.breadcrumb-x a:hover{color:var(--accent);}
.breadcrumb-x .sep{opacity:.5;}
.article-h1{font-size:34px;line-height:1.35;margin-bottom:16px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--text-2);}
.meta-row i{color:var(--accent);margin-right:6px;}
.badge-x{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:700;
  background:rgba(110,77,255,.16);
  border:1px solid rgba(110,77,255,.34);
  color:#C3B4FF;
}
.badge-x.is-accent{background:rgba(47,224,200,.12);border-color:rgba(47,224,200,.32);color:var(--accent);}
.badge-x.is-warm{background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.32);color:#FFB583;}

/* ---------- 布局 ---------- */
.section{padding:72px 0;}
.section-tight{padding:48px 0;}
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:40px;
  align-items:start;
}
@media (min-width:1200px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;}
}
.section-title{font-size:27px;margin-bottom:12px;}
.section-desc{color:var(--text-2);font-size:15.5px;max-width:760px;}

/* ---------- 正文 ---------- */
.article-body{
  max-width:790px;
  font-size:17px;
  line-height:1.9;
  color:rgba(242,238,255,.86);
}
.article-body > * + *{margin-top:1.15em;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;
  font-size:25px;
  margin:1.9em 0 .7em;
  padding-left:16px;
  color:var(--text);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;
  width:4px;
  border-radius:2px;
  background:var(--grad);
}
.article-body h3{font-size:20px;margin:1.6em 0 .6em;color:var(--text);font-weight:800;}
.article-body h4{font-size:17.5px;margin:1.4em 0 .5em;color:var(--text);}
.article-body a{color:var(--accent);border-bottom:1px solid rgba(47,224,200,.4);}
.article-body a:hover{color:#7FF0DF;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:.7em;line-height:1.85;}
.article-body ul li::before{
  content:"";
  position:absolute;left:4px;top:.72em;
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  opacity:.85;
}
.article-body ol{counter-reset:artlist;}
.article-body ol li{counter-increment:artlist;}
.article-body ol li::before{
  content:counter(artlist);
  position:absolute;left:0;top:.1em;
  width:20px;height:20px;
  display:flex;align-items:center;justify-content:center;
  border-radius:6px;
  background:rgba(110,77,255,.18);
  color:#C3B4FF;
  font-size:12px;
  font-weight:700;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  background:var(--bg-2);
  border-left:3px solid var(--accent);
  border-radius:var(--r-sm);
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--r-img);
  margin:1.6em auto;
  box-shadow:var(--sh-card);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  text-align:center;
  font-size:13.5px;
  color:var(--text-3);
  margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line-soft);
  text-align:left;
}
.article-body th{background:var(--bg-2);color:var(--text);font-weight:700;}
.article-body tr:last-child td{border-bottom:none;}

/* 空态 */
.empty-state{
  max-width:790px;
  padding:44px 32px;
  background:var(--card);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  text-align:center;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}

/* ---------- 侧栏 ---------- */
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:22px;
}
.side-card + .side-card{margin-top:22px;}
.side-title{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-title i{color:var(--accent);font-size:14px;}
.side-list li + li{margin-top:12px;}
.side-list a{
  display:block;
  font-size:14.5px;
  color:var(--text-2);
  padding-left:14px;
  position:relative;
  line-height:1.6;
}
.side-list a::before{
  content:"";
  position:absolute;left:0;top:.62em;
  width:5px;height:5px;border-radius:50%;
  background:var(--primary);
}
.side-list a:hover{color:var(--accent);transform:translateX(2px);}
.side-picks li + li{margin-top:16px;}
.side-pick{display:flex;gap:12px;align-items:flex-start;}
.side-pick img{
  width:64px;height:64px;flex:0 0 64px;
  object-fit:cover;border-radius:10px;
  border:1px solid var(--line);
}
.side-pick span{font-size:14px;color:var(--text-2);line-height:1.55;}
.side-pick:hover span{color:var(--accent);}
@media (min-width:1200px){ .sticky-side{position:sticky;top:104px;} }

/* ---------- 标签与翻页 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 15px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  font-size:13.5px;
  color:var(--text-2);
}
.tag:hover{border-color:rgba(47,224,200,.5);color:var(--accent);}
.postnav{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin-top:32px;
}
@media (min-width:768px){ .postnav{grid-template-columns:1fr 1fr;} }
.postnav a{
  display:block;
  padding:20px 22px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--card);
  box-shadow:var(--sh-card);
}
.postnav a:hover{border-color:rgba(110,77,255,.5);box-shadow:var(--sh-hover);transform:translateY(-2px);}
.postnav small{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:8px;letter-spacing:.08em;}
.postnav strong{display:block;font-size:16px;color:var(--text);line-height:1.55;}
.postnav a:hover strong{color:var(--accent);}
.back-row{margin-top:26px;}

/* ---------- 推荐卡 ---------- */
.grid-3{
  display:grid;
  grid-template-columns:1fr;
  gap:22px;
}
@media (min-width:768px){ .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:992px){ .grid-3{grid-template-columns:repeat(3,minmax(0,1fr));} }
.card-x{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .22s ease-out,box-shadow .22s ease-out,background-color .22s ease-out,border-color .22s ease-out;
  height:100%;
  display:flex;
  flex-direction:column;
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);background:var(--card-hover);border-color:rgba(110,77,255,.4);}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease-out;}
.card-x:hover .card-media img{transform:scale(1.05);}
.card-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,9,24,0) 40%,rgba(13,9,24,.86) 100%);
}
.card-badge{position:absolute;top:12px;left:12px;z-index:2;}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17.5px;line-height:1.5;}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.card-meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);padding-top:6px;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s ease-out,background-color .2s ease-out;
}
.faq-item.is-open{border-color:rgba(47,224,200,.42);background:var(--card-hover);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;
  background:none;
  border:none;
  color:var(--text);
  font-size:17px;
  font-weight:700;
  text-align:left;
  cursor:pointer;
  position:relative;
  line-height:1.6;
}
.faq-item.is-open .faq-q::before{
  content:"";
  position:absolute;left:0;top:16px;bottom:16px;
  width:3px;border-radius:2px;background:var(--warm);
}
.faq-q i{color:var(--text-3);font-size:14px;transition:transform .24s ease-out,color .24s ease-out;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out;}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--text-2);line-height:1.85;}
.faq-item.is-open .faq-a{max-height:460px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:18px;
  overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(120deg,rgba(13,9,24,.94) 0%,rgba(110,77,255,.45) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  padding:64px 32px;
  text-align:center;
}
.cta-band h2{font-size:29px;margin-bottom:14px;}
.cta-band p{color:rgba(242,238,255,.78);font-size:15.5px;max-width:600px;margin:0 auto 26px;}
@media (min-width:992px){ .cta-band{padding:76px 90px;} }

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:80px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
@media (min-width:992px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;} }
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.85;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s ease-out,transform .2s ease-out;}
.footer-col a{display:inline-block;}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line-soft);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:center;
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式导航 ---------- */
@media (max-width:991px){
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px 20px 20px;
    background:rgba(13,9,24,.97);
    border-bottom:1px solid var(--line);
    box-shadow:var(--sh-nav);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15px;border-radius:var(--r-sm);}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:rgba(110,77,255,.16);color:var(--text);}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
}
@media (max-width:767px){
  .article-hero{height:250px;}
  .hero-title-line{font-size:23px;}
  .article-h1{font-size:26px;}
  .info-card{padding:22px 20px;}
  .info-wrap{margin-top:-58px;}
  .section{padding:48px 0;}
  .cta-band{padding:48px 20px;}
  .cta-band h2{font-size:23px;}
  .btn{padding:10px 18px;font-size:14px;}
  body{font-size:15.5px;}
}
@media (max-width:575px){
  .nav-actions .btn-primary{display:none;}
  .brand__main{font-size:15.5px;}
  .article-body{font-size:16px;}
}

/* roulang page: category1 */
:root{
  --bg:#0D0918;
  --bg-2:#150E2A;
  --card:#1C1436;
  --card-hover:#241A44;
  --primary:#6E4DFF;
  --primary-soft:#9C86FF;
  --accent:#2FE0C8;
  --warm:#FF8A3D;
  --text:#F2EEFF;
  --text-2:rgba(242,238,255,.66);
  --text-3:rgba(242,238,255,.42);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.07);
  --r-card:14px;
  --r-img:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-card:0 6px 20px rgba(0,0,0,.35);
  --sh-hover:0 14px 34px rgba(110,77,255,.28);
  --sh-nav:0 8px 24px rgba(0,0,0,.45);
  --dur:.22s;
  --ease:cubic-bezier(.32,.72,.4,1);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:-.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:800;letter-spacing:-.02em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
input,select{font:inherit}
::selection{background:rgba(110,77,255,.4);color:#fff}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container-x{padding:0 32px}}

.section{padding:72px 0}
.section--alt{background:var(--bg-2)}
.section--tight{padding-top:52px}
@media (max-width:767px){.section{padding:48px 0}.section--tight{padding-top:34px}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,2.6vw,30px)}
.section-desc{color:var(--text-2);font-size:15px;margin-top:10px;max-width:680px}
.section-more{color:var(--accent);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:gap var(--dur) var(--ease)}
.section-more:hover{color:var(--accent);gap:10px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 25px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.4;
  border:1px solid transparent;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.btn-primary{
  background:linear-gradient(135deg,#6E4DFF 0%,#2FE0C8 100%);
  color:#fff;border-color:transparent;
  box-shadow:0 8px 22px rgba(110,77,255,.32);
}
.btn.btn-primary:hover,.btn.btn-primary:focus{
  background:linear-gradient(135deg,#7C5CFF 0%,#45EBD4 100%);
  color:#fff;transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(110,77,255,.45);
}
.btn.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(110,77,255,.35)}
.btn-ghost{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.18);color:var(--text);
}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(47,224,200,.55);color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-sm{padding:9px 18px;font-size:14px}

/* ---------- 徽章 ---------- */
.badge-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(47,224,200,.13);color:var(--accent);
  border:1px solid rgba(47,224,200,.28);
}
.badge-x--purple{background:rgba(110,77,255,.18);color:var(--primary-soft);border-color:rgba(110,77,255,.36)}
.badge-x--warm{background:rgba(255,138,61,.14);color:#FFA96E;border-color:rgba(255,138,61,.32)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(13,9,24,.45);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(13,9,24,.92);box-shadow:var(--sh-nav)}
.nav-bar{position:relative;display:flex;align-items:center;gap:20px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .nav-bar{height:62px}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;font-size:20px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#6E4DFF,#2FE0C8);
  box-shadow:0 6px 18px rgba(110,77,255,.4);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__main{font-size:17px;font-weight:800;letter-spacing:.02em;color:var(--text)}
.brand__sub{font-size:11px;letter-spacing:.24em;color:var(--text-2);margin-top:3px}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-sm);
  font-size:15px;color:var(--text-2);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:#fff;font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#6E4DFF,#2FE0C8);
}
.nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:6px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);
  cursor:pointer;transition:all var(--dur) var(--ease);
}
.icon-btn:hover{color:#fff;border-color:rgba(110,77,255,.55);background:rgba(110,77,255,.16)}
.icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;place-items:center;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(47,224,200,.5)}

.nav-search{
  display:none;padding:18px 20px 22px;
  border-top:1px solid var(--line-soft);
  background:rgba(13,9,24,.96);
}
.nav-search.is-open{display:block}
@media (min-width:768px){.nav-search{padding:18px 32px 22px}}
.nav-search label{display:block;font-size:13px;color:var(--text-2);margin-bottom:10px}
.nav-search__row{display:flex;gap:10px;max-width:600px;flex-wrap:wrap}
.nav-search__row input{
  flex:1 1 260px;min-width:0;padding:12px 15px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--text);font-size:15px;outline:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search__row input::placeholder{color:var(--text-3)}
.nav-search__row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,224,200,.16)}

@media (max-width:991px){
  .nav-toggle{display:grid}
  .nav-links{
    position:absolute;top:calc(100% + 8px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:12px;margin-left:0;display:none;
    background:rgba(21,14,42,.97);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-nav);
  }
  .nav-links.is-open{display:flex}
  .nav-link{padding:12px 14px;font-size:16px}
  .nav-link.is-active{background:rgba(110,77,255,.14)}
  .nav-link.is-active::after{left:0;right:auto;top:50%;bottom:auto;width:3px;height:20px;transform:translateY(-50%)}
}
@media (max-width:575px){
  .brand__main{font-size:15px}
  .brand__sub{font-size:10px;letter-spacing:.18em}
  .nav-bar{gap:12px;height:64px}
  .site-header.is-scrolled .nav-bar{height:58px}
  .nav-actions .btn{padding:9px 16px;font-size:14px}
}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;padding:96px 0 46px;
  background-image:
    linear-gradient(100deg,rgba(13,9,24,.95) 6%,rgba(21,14,42,.74) 52%,rgba(13,9,24,.92) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center 28%;
  border-bottom:1px solid var(--line-soft);
}
.cat-hero__inner{max-width:760px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px}
.crumb a{color:var(--text-2);transition:color var(--dur) var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb i{font-size:9px;opacity:.6}
.cat-hero h1{font-size:clamp(28px,4.1vw,46px);letter-spacing:-.03em}
.cat-hero h1 span{
  background:linear-gradient(120deg,#9C86FF,#2FE0C8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero__lead{color:var(--text-2);font-size:16px;margin-top:16px;max-width:660px}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cat-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ---------- 筛选条 ---------- */
.filter-bar{
  position:sticky;top:66px;z-index:40;
  background:rgba(13,9,24,.9);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  padding:14px 0;
}
.filter-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.segment{display:flex;gap:6px;flex-wrap:wrap}
.segment button{
  padding:8px 16px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(255,255,255,.03);cursor:pointer;
  transition:all var(--dur) var(--ease);
}
.segment button:hover{color:#fff;border-color:rgba(110,77,255,.5)}
.segment button.is-active{
  color:#fff;font-weight:600;border-color:transparent;
  background:linear-gradient(135deg,rgba(110,77,255,.95),rgba(47,224,200,.85));
  box-shadow:0 6px 18px rgba(110,77,255,.3);
}
.segment button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sort-wrap{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.sort-wrap select{
  padding:8px 14px;border-radius:var(--r-sm);font-size:14px;color:var(--text);
  background:var(--bg-2);border:1px solid var(--line);outline:none;cursor:pointer;
  transition:border-color var(--dur) var(--ease);
}
.sort-wrap select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,224,200,.14)}

/* ---------- 卡片网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:991px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.grid-3{grid-template-columns:1fr}}

.entry-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.entry-card:hover,.entry-card:focus-visible{
  transform:translateY(-4px);background:var(--card-hover);
  border-color:rgba(110,77,255,.45);box-shadow:var(--sh-hover);color:inherit;outline:none;
}
.entry-card.is-hidden{display:none}
.entry-card__media{position:relative;aspect-ratio:3/4;overflow:hidden;background:#150E2A}
.entry-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.entry-card:hover .entry-card__media img{transform:scale(1.045)}
.entry-card__media::after{
  content:"";position:absolute;inset:auto 0 0 0;height:58%;
  background:linear-gradient(180deg,rgba(13,9,24,0) 0%,rgba(13,9,24,.88) 100%);
}
.entry-card__badge{position:absolute;left:12px;top:12px;z-index:2}
.entry-card__time{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-size:12px;color:var(--text-2);
  padding:4px 10px;border-radius:var(--r-pill);
  background:rgba(13,9,24,.62);border:1px solid var(--line-soft);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.entry-card__body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.entry-card__title{
  font-size:18px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-card__desc{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-card__link{
  margin-top:auto;padding-top:8px;color:var(--accent);font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;transition:gap var(--dur) var(--ease);
}
.entry-card:hover .entry-card__link{gap:10px}

.pager{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:44px}
.pager__item{
  min-width:44px;height:44px;padding:0 16px;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;background:rgba(255,255,255,.02);
}
.pager__item.is-current{
  background:linear-gradient(135deg,#6E4DFF,#2FE0C8);color:#fff;
  border-color:transparent;font-weight:700;
}
.pager__item.is-disabled{opacity:.4}

/* ---------- 卖点卡 ---------- */
.feature-card{
  height:100%;padding:28px 26px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(110,77,255,.4)}
.feature-card__icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  font-size:19px;color:var(--accent);margin-bottom:18px;
  background:rgba(47,224,200,.12);border:1px solid rgba(47,224,200,.26);
}
.feature-card h3{font-size:19px;margin-bottom:10px}
.feature-card p{font-size:15px;color:var(--text-2);line-height:1.85}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:991px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575px){.steps{grid-template-columns:1fr}}
.step{
  position:relative;padding:26px 22px;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(28,20,54,.95),rgba(21,14,42,.55));
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(255,138,61,.4);box-shadow:0 14px 30px rgba(0,0,0,.4)}
.step__no{
  font-size:36px;font-weight:800;line-height:1;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1.5px rgba(255,138,61,.7);
  margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1.02fr 1fr;gap:48px;align-items:center}
@media (max-width:991px){.split{grid-template-columns:1fr;gap:30px}}
.split__media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:4/3;box-shadow:var(--sh-card);background:#150E2A;
}
.split__media img{width:100%;height:100%;object-fit:cover}
.scene-list li{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--line-soft);
}
.scene-list li:last-child{border-bottom:0}
.scene-list i{color:var(--accent);font-size:15px;margin-top:7px;flex:0 0 auto}
.scene-list strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px}
.scene-list span{font-size:14px;color:var(--text-2);line-height:1.8}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line-soft);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
}
@media (max-width:767px){.stat-strip{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg-2);padding:30px 18px;text-align:center}
.stat__num{font-size:32px;font-weight:800;line-height:1.1;color:#fff;font-family:Inter,var(--font)}
.stat__num em{font-style:normal;font-size:15px;color:var(--accent);margin-left:4px;font-weight:600}
.stat__label{font-size:14px;color:var(--text-2);margin-top:8px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.faq .accordion-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;
}
.faq .accordion-button{
  background:transparent;color:var(--text);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:20px 22px;box-shadow:none;border-radius:var(--r-card);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.faq .accordion-button:not(.collapsed){
  color:#fff;background:rgba(110,77,255,.12);
  box-shadow:inset 3px 0 0 var(--warm);
}
.faq .accordion-button:hover{background:rgba(255,255,255,.05)}
.faq .accordion-button:focus{box-shadow:inset 3px 0 0 var(--warm),0 0 0 3px rgba(47,224,200,.18);z-index:2}
.faq .accordion-button::after{
  content:"";width:9px;height:9px;background-image:none;flex:0 0 auto;
  border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
  margin-left:18px;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--accent)}
.faq .accordion-body{padding:4px 22px 22px;color:var(--text-2);font-size:15px;line-height:1.9}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;padding:88px 0;text-align:center;
  background-image:
    linear-gradient(rgba(13,9,24,.86),rgba(13,9,24,.93)),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
@media (max-width:767px){.cta-band{padding:56px 0}}
.cta-band h2{font-size:clamp(24px,3vw,32px)}
.cta-band p{color:var(--text-2);font-size:16px;margin:16px auto 30px;max-width:600px}
.cta-band__actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A0714;border-top:1px solid var(--line-soft);padding:64px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
@media (max-width:991px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:575px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-brand{display:inline-flex;align-items:center;gap:12px}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:18px;color:var(--text)}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a,.footer-col ul span{font-size:14px;color:var(--text-2);display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease)}
.footer-col ul a:hover{color:var(--primary-soft);transform:translateX(2px)}
.footer-about{font-size:14px;color:var(--text-2);line-height:1.85;margin-top:16px;max-width:360px}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg:#0D0918;
  --bg-soft:#150E2A;
  --card:#1C1436;
  --card-hover:#241A44;
  --primary:#6E4DFF;
  --primary-deep:#4B2FD6;
  --cyan:#2FE0C8;
  --orange:#FF8A3D;
  --text:#F2EEFF;
  --text-2:rgba(242,238,255,.66);
  --text-3:rgba(242,238,255,.42);
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --radius-card:14px;
  --radius-sm:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-card:0 6px 20px rgba(0,0,0,.35);
  --shadow-hover:0 14px 34px rgba(110,77,255,.28);
  --shadow-nav:0 8px 24px rgba(0,0,0,.45);
  --gap:24px;
  --section:72px;
  --font: "PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:-0.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease-out, background-color .2s ease-out, transform .2s ease-out;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:800;letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:rgba(110,77,255,.45);color:#fff;}

.container-x{max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container-x{padding:0 32px;}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(13,9,24,.45);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
  transition:background-color .24s ease-out, box-shadow .24s ease-out;
}
.site-header.is-solid{
  background:rgba(13,9,24,.92);
  box-shadow:var(--shadow-nav);
}
.nav-bar{display:flex;align-items:center;gap:18px;height:76px;transition:height .24s ease-out;}
.site-header.is-solid .nav-bar{height:66px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand__mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
  box-shadow:0 6px 18px rgba(110,77,255,.4);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__main{font-size:17px;font-weight:800;letter-spacing:0;}
.brand__sub{font-size:10.5px;letter-spacing:.24em;color:var(--text-2);font-weight:500;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--radius-sm);
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-link.is-active{color:var(--text);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:14px;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--radius-pill);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text-2);cursor:pointer;transition:all .2s ease-out;
}
.icon-btn:hover{color:var(--text);border-color:rgba(110,77,255,.6);background:rgba(110,77,255,.16);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  color:var(--text);font-size:17px;cursor:pointer;
}
.nav-search{
  display:none;border-top:1px solid var(--line-soft);
  background:rgba(13,9,24,.96);
  padding:16px 0 20px;
}
.nav-search.is-open{display:block;}
.nav-search label{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:9px;}
.nav-search__row{display:flex;gap:10px;max-width:640px;}
.nav-search input{
  flex:1;height:46px;padding:0 16px;border-radius:var(--radius-sm);
  background:#1C1436;border:1px solid var(--line);color:var(--text);font-size:15px;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(47,224,200,.16);outline:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out, box-shadow .2s ease-out, background-color .2s ease-out, color .2s ease-out, border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,var(--primary),var(--cyan));
  color:#0D0918;
  box-shadow:0 8px 22px rgba(110,77,255,.34);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(110,77,255,.5);color:#0D0918;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;border-color:var(--line);color:var(--text);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(47,224,200,.7);box-shadow:0 10px 26px rgba(47,224,200,.2);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ---------- badges ---------- */
.badge-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(110,77,255,.18);color:#C6B7FF;border:1px solid rgba(110,77,255,.34);
}
.badge-x--cyan{background:rgba(47,224,200,.14);color:#9DF3E7;border-color:rgba(47,224,200,.34);}
.badge-x--orange{background:rgba(255,138,61,.14);color:#FFC79C;border-color:rgba(255,138,61,.34);}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:140px 0 66px;
  background:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px),
    radial-gradient(900px 420px at 88% 8%, rgba(110,77,255,.30), transparent 62%),
    var(--bg-soft);
  background-size:42px 42px,42px 42px,auto,auto;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 40%,rgba(13,9,24,.75) 100%);
}
.page-hero .container-x{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;}
.hero-eyebrow{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.hero-title{font-size:clamp(30px,4.2vw,46px);font-weight:800;letter-spacing:-0.015em;}
.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,var(--cyan),var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:18px;font-size:17px;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-figure{position:relative;}
.hero-figure__frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:0 22px 50px rgba(0,0,0,.5);
  aspect-ratio:16/11;background:#1C1436;
}
.hero-figure__frame img{width:100%;height:100%;object-fit:cover;}
.hero-figure__frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,9,24,.05) 30%,rgba(13,9,24,.82) 100%);
}
.hero-figure__cap{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  font-size:14px;color:var(--text-2);
}
.hero-pill{
  position:absolute;right:-10px;top:-14px;z-index:3;
  padding:10px 16px;border-radius:var(--radius-pill);
  background:rgba(28,20,54,.86);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:13px;color:var(--text-2);box-shadow:var(--shadow-card);
}
.hero-pill strong{color:var(--orange);font-size:15px;}

/* ---------- sections ---------- */
.section{padding:var(--section) 0;}
.section--soft{background:var(--bg-soft);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head h2{font-size:clamp(23px,2.6vw,30px);}
.section-head p{margin-top:12px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-block;margin-bottom:12px;
  font-size:13px;font-weight:700;letter-spacing:.18em;color:var(--cyan);text-transform:uppercase;
}

/* ---------- stat strip ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-card);
  transition:transform .22s ease-out, box-shadow .22s ease-out, background-color .22s ease-out, border-color .22s ease-out;
}
.stat-card:hover{transform:translateY(-4px);background:var(--card-hover);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.4);}
.stat-num{font-size:32px;font-weight:800;letter-spacing:-0.02em;color:var(--text);}
.stat-num span{font-size:16px;color:var(--orange);margin-left:3px;font-weight:700;}
.stat-label{margin-top:6px;font-size:14.5px;color:var(--text-2);}

/* ---------- rank list ---------- */
.rank-list{border-top:1px solid var(--line);}
.rank-row{
  display:grid;grid-template-columns:88px minmax(0,1fr) 96px;
  gap:24px;align-items:center;
  padding:24px 18px;border-bottom:1px solid var(--line);
  transition:background-color .22s ease-out;
}
.rank-row:hover{background:var(--card-hover);}
.rank-row__no{
  font-size:44px;font-weight:800;line-height:1;
  color:var(--orange);letter-spacing:-0.04em;
  font-variant-numeric:tabular-nums;
}
.rank-row__body h3{font-size:19px;font-weight:700;}
.rank-row__body h3 a:hover{color:var(--cyan);}
.rank-row__body p{margin-top:8px;font-size:15px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rank-row__meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px;font-size:13px;color:var(--text-3);}
.rank-row__thumb{
  width:96px;height:128px;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);background:#1C1436;position:relative;flex:0 0 auto;
}
.rank-row__thumb img{width:100%;height:100%;object-fit:cover;}
.rank-row__thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(13,9,24,.7));}

/* ---------- rail ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 14px;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 auto;width:272px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s ease-out, box-shadow .22s ease-out, border-color .22s ease-out, background-color .22s ease-out;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.42);background:var(--card-hover);}
.rail-card__cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:#1C1436;}
.rail-card__cover img{width:100%;height:100%;object-fit:cover;}
.rail-card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 42%,rgba(13,9,24,.86));}
.rail-card__cover .badge-x{position:absolute;top:12px;left:12px;z-index:2;}
.rail-card__body{padding:16px 18px 20px;}
.rail-card__body h3{font-size:16.5px;font-weight:700;}
.rail-card__body p{margin-top:8px;font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:44px;height:44px;border-radius:var(--radius-pill);
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
  cursor:pointer;transition:all .2s ease-out;
}
.rail-btn:hover{background:rgba(110,77,255,.2);border-color:rgba(110,77,255,.55);transform:translateY(-2px);}
.rail-btn[disabled]{opacity:.34;cursor:not-allowed;transform:none;}
.head-line{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;counter-reset:step;}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px 24px 26px;box-shadow:var(--shadow-card);
  transition:transform .22s ease-out, box-shadow .22s ease-out, border-color .22s ease-out, background-color .22s ease-out;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,224,200,.4);background:var(--card-hover);}
.step-card::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:14px;font-weight:800;letter-spacing:.16em;color:var(--cyan);margin-bottom:14px;
}
.step-card h3{font-size:19px;}
.step-card p{margin-top:10px;font-size:15px;color:var(--text-2);}

/* ---------- scenario cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);display:flex;flex-direction:column;
  transition:transform .22s ease-out, box-shadow .22s ease-out, border-color .22s ease-out;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(110,77,255,.42);}
.scene-card__cover{aspect-ratio:16/9;overflow:hidden;position:relative;background:#1C1436;}
.scene-card__cover img{width:100%;height:100%;object-fit:cover;}
.scene-card__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(21,14,42,.9));}
.scene-card__body{padding:20px 22px 24px;}
.scene-card__body h3{font-size:18px;}
.scene-card__body p{margin-top:10px;font-size:14.8px;color:var(--text-2);}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.tick-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,var(--primary),var(--cyan));
}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .22s ease-out, background-color .22s ease-out;
}
.faq-item:hover{border-color:rgba(110,77,255,.4);}
.faq-item.is-open{background:var(--card-hover);border-color:rgba(110,77,255,.5);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;color:var(--text);
  font-size:17.5px;font-weight:700;text-align:left;cursor:pointer;position:relative;
}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:var(--orange);
}
.faq-q i{color:var(--text-2);font-size:15px;transition:transform .24s ease-out;flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--cyan);}
.faq-a{display:none;padding:0 22px 22px;font-size:15.5px;color:var(--text-2);}
.faq-item.is-open .faq-a{display:block;}
.faq-a strong{color:var(--text);}

/* ---------- cta ---------- */
.cta-band{
  position:relative;padding:86px 0;text-align:center;
  background-image:linear-gradient(100deg,rgba(13,9,24,.94),rgba(75,47,214,.72)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);
}
.cta-band h2{font-size:clamp(24px,3vw,34px);}
.cta-band p{margin:16px auto 0;max-width:640px;color:rgba(242,238,255,.8);font-size:16.5px;}
.cta-band .btn{margin-top:30px;}

/* ---------- footer ---------- */
.site-footer{background:#0A0714;border-top:1px solid var(--line-soft);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-about{font-size:14.5px;color:var(--text-2);max-width:330px;}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--cyan);transform:translateX(2px);display:inline-block;}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;text-align:center;
  font-size:13px;color:var(--text-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out, transform .5s ease-out;}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media(max-width:1199px){
  .hero-grid{gap:36px;}
  .rail-card{width:250px;}
}
@media(max-width:991px){
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 20px 20px;
    background:rgba(13,9,24,.96);
    -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-nav);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:12px 10px;font-size:15.5px;}
  .nav-link.is-active::after{left:10px;right:auto;width:22px;bottom:6px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions .btn-primary{display:none;}
  .hero-grid{grid-template-columns:1fr;}
  .hero-figure{order:-1;}
  .hero-pill{right:10px;top:-12px;}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .section{--section:60px;}
}
@media(max-width:767px){
  body{font-size:15.5px;}
  .page-hero{padding:120px 0 52px;}
  .rank-row{grid-template-columns:56px minmax(0,1fr) 78px;gap:14px;padding:20px 6px;}
  .rank-row__no{font-size:32px;}
  .rank-row__thumb{width:78px;height:104px;}
  .rail-card{width:216px;}
  .head-line{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:64px 0;}
  .footer-bottom{justify-content:flex-start;text-align:left;}
}
@media(max-width:519px){
  .hero-actions .btn{flex:1 1 100%;}
  .stat-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .rank-row{grid-template-columns:44px minmax(0,1fr);gap:12px;}
  .rank-row__thumb{display:none;}
  .rank-row__no{font-size:28px;}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}