/* roulang page: index */
:root{
  --bg:#050B18;
  --surface-1:#0A1226;
  --surface-2:#0E1830;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --primary:#2BA8FF;
  --primary-deep:#0F5FD8;
  --primary-soft:rgba(43,168,255,.12);
  --gold:#FFD27A;
  --gold-soft:rgba(255,210,122,.14);
  --mint:#3DE0C0;
  --text:#E6EDF7;
  --muted:#A7B4C8;
  --faint:#6C7A90;
  --danger:#FF7A7A;
  --radius-xl:20px;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(43,168,255,.35);
  --container:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:#6ac3ff}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(43,168,255,.35);color:#fff}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
@media (max-width:767.98px){.container-x{padding:0 20px}}
@media (min-width:1400px){.container-x{max-width:1320px}}

/* ---------- 星点装饰 ---------- */
.starfield{position:relative;isolation:isolate}
.starfield::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 24%, rgba(255,255,255,.75), transparent 62%),
    radial-gradient(1.2px 1.2px at 72% 14%, rgba(255,255,255,.55), transparent 62%),
    radial-gradient(1.8px 1.8px at 46% 68%, rgba(255,255,255,.5), transparent 62%),
    radial-gradient(1.2px 1.2px at 86% 54%, rgba(255,255,255,.6), transparent 62%),
    radial-gradient(1.4px 1.4px at 32% 88%, rgba(255,255,255,.45), transparent 62%),
    radial-gradient(1.1px 1.1px at 62% 38%, rgba(255,255,255,.5), transparent 62%);
  background-size:260px 260px,340px 340px,420px 420px,300px 300px,380px 380px,220px 220px;
}
.starfield > *{position:relative;z-index:1}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(5,11,24,.76);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  height:82px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(43,168,255,.9),rgba(15,95,216,.9));
  box-shadow:0 6px 20px rgba(43,168,255,.32);
  color:#fff;font-size:17px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16.5px;font-weight:700;color:var(--text);letter-spacing:.01em}
.brand-sub{font-size:10.5px;color:var(--faint);letter-spacing:.22em}
.brand:hover .brand-name{color:#fff}

.nav-menu{display:flex;align-items:center;gap:34px}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--muted);
  letter-spacing:.01em;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--text)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--text)}
.nav-menu a.active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:20px}
.nav-login-text{font-size:15px;color:var(--muted)}
.nav-login-text:hover{color:var(--text)}

.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  font-size:17px;
  align-items:center;justify-content:center;
}

/* ---------- 按钮 ---------- */
.btn-glow{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 28px;
  border:0;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  color:#fff;font-size:15px;font-weight:600;line-height:1;
  box-shadow:var(--glow);
  transition:transform .22s ease,box-shadow .25s ease,filter .22s ease;
  cursor:pointer;
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 36px rgba(43,168,255,.5);filter:brightness(1.08)}
.btn-glow:active{transform:translateY(0)}
.btn-glow.sm{padding:11px 22px;font-size:14px}

.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 28px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-pill);
  background:transparent;
  color:var(--text);font-size:15px;font-weight:500;line-height:1;
  transition:border-color .22s ease,background .22s ease,transform .22s ease,color .22s ease;
}
.btn-ghost:hover{color:var(--text);border-color:rgba(43,168,255,.7);background:rgba(43,168,255,.08);transform:translateY(-2px)}
.btn-ghost.sm{padding:11px 22px;font-size:14px}

.btn-text{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14.5px;color:var(--primary);font-weight:500;
}
.btn-text i{transition:transform .22s ease}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
@media (max-width:991.98px){.section{padding:72px 0}.section.tight{padding:56px 0}}
@media (max-width:575.98px){.section{padding:56px 0}.section.tight{padding:48px 0}}

.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;color:var(--primary);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7}
.section-head h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;max-width:640px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow::before{display:none}

.glass{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.divider{height:1px;background:var(--line);border:0;margin:0}

.badge-soft{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--primary-soft);
  color:var(--primary);
  font-size:12.5px;font-weight:500;letter-spacing:.02em;
}
.badge-gold{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 11px;border-radius:var(--radius-pill);
  background:var(--gold-soft);
  border:1px solid rgba(255,210,122,.35);
  color:var(--gold);
  font-size:12px;font-weight:600;
}
.dot-online{
  width:7px;height:7px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 4px rgba(61,224,192,.16);
  display:inline-block;
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:96px 0 88px;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(5,11,24,.86) 0%,rgba(5,11,24,.9) 55%,rgba(5,11,24,.96) 100%),
    radial-gradient(1000px 520px at 78% 18%, rgba(43,168,255,.18), transparent 70%);
  z-index:0;
}
.hero > .container-x{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:56px;align-items:center}
.hero-brandline{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
  padding:7px 15px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  margin-bottom:26px;
}
.hero h1{
  font-size:clamp(34px,5vw,58px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.18;
  margin-bottom:22px;
}
.hero h1 .hl{
  background:linear-gradient(135deg,#7CC7FF,#2BA8FF 45%,#0F5FD8);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:34px;
  line-height:1.85;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-note{display:flex;flex-wrap:wrap;gap:22px;color:var(--faint);font-size:13.5px}
.hero-note span{display:inline-flex;align-items:center;gap:8px}

.hero-panel{padding:26px 26px 22px}
.hero-panel h3{
  font-size:15px;letter-spacing:.04em;color:var(--muted);
  font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.hero-panel .panel-title{font-size:16px;color:var(--text);font-weight:600}
.panel-list{margin-top:18px}
.panel-list li{
  display:flex;align-items:flex-start;gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14.6px;color:var(--muted);
}
.panel-list li:last-child{border-bottom:0}
.panel-list i{color:var(--primary);font-size:13px;margin-top:6px}
.panel-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:16px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--faint);
}

/* ---------- 数据条 ---------- */
.stats{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(10,18,38,.45);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{
  padding:34px 30px;
  border-right:1px solid var(--line);
}
.stat:last-child{border-right:0}
.stat-num{
  font-size:30px;font-weight:700;letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:6px;
}
.stat-num small{font-size:14px;font-weight:500;color:var(--faint)}
.stat-label{margin-top:8px;font-size:14px;color:var(--muted)}
@media (max-width:991.98px){
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:575.98px){
  .stat{padding:24px 20px}
  .stat-num{font-size:24px}
}

/* ---------- 权益对比表 ---------- */
.compare-wrap{padding:10px;border-radius:var(--radius-xl)}
.compare{display:block}
.compare-row{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  align-items:center;
  min-height:56px;
  padding:0 18px;
  border-bottom:1px solid var(--line-soft);
  transition:background .2s ease;
}
.compare-row:last-child{border-bottom:0}
.compare-row:not(.compare-head):hover{background:rgba(43,168,255,.06)}
.compare-head{
  color:var(--muted);
  font-size:14.5px;
  font-weight:600;
  border-bottom:1px solid var(--line);
}
.compare-cell{padding:10px 6px;font-size:14.8px;color:var(--muted)}
.compare-cell--label{color:var(--text);font-weight:500;font-size:15.2px}
.compare-head .compare-cell{color:var(--muted)}
.compare-head .is-recommended{
  position:relative;
  border-radius:12px 12px 0 0;
  background:rgba(43,168,255,.07);
  color:var(--text);
  display:flex;align-items:center;gap:8px;justify-content:center;
}
.compare-head .is-recommended::before{
  content:"";
  position:absolute;left:0;right:0;top:-6px;height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,#2BA8FF,#0F5FD8);
}
.compare-head .compare-cell{text-align:center;justify-content:center}
.compare-head .compare-cell--label{text-align:left;justify-content:flex-start}
.compare-row .compare-cell:not(.compare-cell--label){text-align:center}
.compare .yes{color:var(--primary);font-size:15px}
.compare .no{color:rgba(255,255,255,.2);font-size:15px}
.compare .gold{color:var(--gold)}

@media (max-width:767.98px){
  .compare-head{display:none}
  .compare-row{
    display:block;
    padding:18px;
    border:1px solid var(--line);
    border-radius:16px;
    margin-bottom:16px;
    background:var(--glass);
  }
  .compare-row:last-child{margin-bottom:0}
  .compare-row .compare-cell{
    display:flex;align-items:center;justify-content:space-between;
    text-align:left !important;
    padding:11px 0;
    border-bottom:1px dashed var(--line-soft);
  }
  .compare-row .compare-cell:last-child{border-bottom:0}
  .compare-row .compare-cell:not(.compare-cell--label)::before{
    content:attr(data-label);
    color:var(--faint);
    font-size:13px;
    margin-right:14px;
  }
  .compare-row .compare-cell--label{
    font-size:16px;font-weight:600;color:var(--text);
    padding-top:0;
  }
}

/* ---------- 等级卡 ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:center;
}
.plan{
  padding:32px 28px 30px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.plan:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.3);box-shadow:var(--shadow-card)}
.plan.featured{
  transform:scale(1.04);
  border-color:rgba(43,168,255,.42);
  box-shadow:0 18px 48px rgba(43,168,255,.22);
}
.plan.featured:hover{transform:scale(1.04) translateY(-4px)}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.plan-name{font-size:17px;font-weight:600}
.plan-price{
  display:flex;align-items:baseline;gap:8px;
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.plan-price b{font-size:36px;font-weight:700;letter-spacing:-.02em}
.plan-price span{font-size:14px;color:var(--faint)}
.plan-desc{font-size:14px;color:var(--muted);margin-bottom:22px}
.plan-list{margin-bottom:26px}
.plan-list li{
  display:flex;align-items:flex-start;gap:10px;
  padding:11px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:14.6px;color:var(--muted);
}
.plan-list li:last-child{border-bottom:0}
.plan-list i{color:var(--mint);font-size:12px;margin-top:7px}
.plan .btn-glow,.plan .btn-ghost{width:100%;justify-content:center}
@media (max-width:991.98px){
  .plan-grid{grid-template-columns:1fr;gap:18px}
  .plan.featured{transform:none}
  .plan.featured:hover{transform:translateY(-4px)}
}
.plan-tag-gold{color:var(--gold)}

/* ---------- 内容预览 ---------- */
.preview-grid{
  display:grid;
  grid-template-columns:1.25fr 1.25fr .9fr;
  grid-template-rows:auto;
  gap:22px;
}
.preview-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-xl);
  border:1px solid var(--line);
  background:var(--surface-1);
  min-height:290px;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.preview-card:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.34);box-shadow:var(--shadow-card)}
.preview-card img{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:.55;
  transition:transform .5s ease,opacity .3s ease;
}
.preview-card:hover img{transform:scale(1.04);opacity:.66}
.preview-card::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,24,.25) 0%,rgba(5,11,24,.9) 78%);
}
.preview-body{position:relative;z-index:2;padding:24px}
.preview-body h3{font-size:19px;margin-bottom:10px}
.preview-body p{font-size:14px;color:var(--muted);line-height:1.8}
.preview-card.tall{min-height:340px}
@media (max-width:991.98px){
  .preview-grid{grid-template-columns:1fr 1fr}
  .preview-card.tall{grid-column:span 2}
}
@media (max-width:575.98px){
  .preview-grid{grid-template-columns:1fr}
  .preview-card.tall{grid-column:span 1}
  .preview-card{min-height:240px}
}

/* ---------- 最新信息列表 ---------- */
.news-list{border-top:1px solid var(--line)}
.news-item{
  display:grid;
  grid-template-columns:200px 1fr auto;
  gap:26px;
  align-items:center;
  padding:24px 6px;
  border-bottom:1px solid var(--line);
  color:inherit;
  transition:background .22s ease,transform .22s ease,padding .22s ease;
}
.news-item:hover{
  background:rgba(43,168,255,.05);
  color:inherit;
}
.news-thumb{
  width:200px;height:130px;
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-2);
  flex-shrink:0;
}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.news-item:hover .news-thumb img{transform:scale(1.05)}
.news-main{min-width:0}
.news-main h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:1;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-item:hover .news-main h3{color:var(--primary)}
.news-main p{
  font-size:14.2px;color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  line-height:1.8;
}
.news-meta{
  display:flex;align-items:center;gap:14px;
  margin-top:14px;
  font-size:13px;color:var(--faint);
  font-variant-numeric:tabular-nums;
}
.news-arrow{color:var(--faint);font-size:15px;transition:transform .22s ease,color .22s ease}
.news-item:hover .news-arrow{transform:translateX(4px);color:var(--primary)}
@media (max-width:767.98px){
  .news-item{grid-template-columns:1fr;gap:16px;padding:22px 2px}
  .news-thumb{width:100%;height:180px}
  .news-arrow{display:none}
}
.empty-state{
  margin:36px 0;
  padding:56px 24px;
  text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--radius-lg);
  color:var(--muted);
  font-size:15px;
}
.empty-state a{display:inline-block;margin-top:12px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px 24px 20px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16.5px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  position:relative;
  transition:color .2s ease;
}
.faq-q::before{
  content:"";
  position:absolute;left:0;top:22px;bottom:22px;
  width:2px;border-radius:2px;
  background:var(--primary);
  opacity:0;
  transition:opacity .25s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-q i{color:var(--faint);font-size:14px;transition:transform .3s ease,color .3s ease;flex-shrink:0}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--primary)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a-inner{
  padding:0 4px 26px 20px;
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
  max-width:820px;
}

/* ---------- 底部 CTA ---------- */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:26px;
  border:1px solid rgba(43,168,255,.22);
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  padding:66px 48px;
}
.cta-block::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(5,11,24,.93),rgba(10,18,38,.86));
  z-index:0;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .9fr;gap:40px;align-items:center}
.cta-inner h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;letter-spacing:-.01em}
.cta-inner p{color:var(--muted);font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
@media (max-width:991.98px){
  .cta-block{padding:44px 26px}
  .cta-inner{grid-template-columns:1fr;gap:26px}
  .cta-actions{justify-content:flex-start}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070F;
  border-top:1px solid var(--line);
  padding:72px 0 0;
  position:relative;
  overflow:hidden;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-name{font-size:16px}
.footer-intro{font-size:14px;color:var(--muted);line-height:1.9;max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:18px;letter-spacing:.06em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:13.5px;color:var(--muted)}
.footer-col a:hover{color:var(--primary);text-decoration:underline}
.footer-col p{font-size:13.5px;color:var(--muted);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:12.8px;color:var(--faint);
}
.footer-bottom .sep{opacity:.4}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr}
}

/* ---------- 移动端导航 ---------- */
@media (max-width:991.98px){
  .nav-menu{
    position:fixed;
    top:82px;left:0;right:0;bottom:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:28px 24px 40px;
    background:rgba(5,11,24,.97);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
    overflow-y:auto;
  }
  .nav-menu a{
    width:100%;
    font-size:19px;
    color:var(--text);
    padding:20px 0;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-menu a::after{display:none}
  .nav-menu a.active{color:var(--primary)}
  .nav-menu.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-actions .nav-login-text{display:none}
  .nav-toggle{display:inline-flex}
  .nav-menu .mobile-cta{
    margin-top:28px;width:100%;
  }
  .nav-menu .mobile-cta .btn-glow{width:100%;justify-content:center;padding:15px 24px;font-size:15.5px}
}
@media (min-width:992px){
  .nav-menu .mobile-cta{display:none}
}
@media (max-width:575.98px){
  .nav-wrap{height:72px}
  .nav-menu{top:72px}
  .brand-name{font-size:15px}
  .brand-sub{font-size:9.5px;letter-spacing:.16em}
  .hero{padding:64px 0 56px}
  .hero-cta .btn-glow,.hero-cta .btn-ghost{width:100%;justify-content:center}
  .hero-note{gap:14px;flex-direction:column}
}

/* roulang page: article */
:root{
  --bg:#050B18;
  --surface-1:#0A1226;
  --surface-2:#0E1830;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --primary:#2BA8FF;
  --primary-deep:#0F5FD8;
  --gold:#FFD27A;
  --mint:#3DE0C0;
  --text:#E6EDF7;
  --text-2:#A7B4C8;
  --text-3:#6C7A90;
  --danger:#FF7A7A;
  --line:rgba(255,255,255,.08);
  --line-weak:rgba(255,255,255,.05);
  --radius-lg:20px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(43,168,255,.35);
}
*{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","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary);text-decoration:none;}
button{font:inherit;border:none;background:none;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--text);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1400px){.container-x{max-width:1320px;}}

/* ---------- 按钮 ---------- */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  color:#fff;font-weight:600;font-size:15px;letter-spacing:.01em;
  box-shadow:var(--glow);
  transition:box-shadow .25s ease,transform .25s ease,filter .25s ease;
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 12px 38px rgba(43,168,255,.5);}
.btn-glow.sm{padding:9px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;
  border:1px solid rgba(255,255,255,.14);background:transparent;
  color:var(--text);font-weight:500;font-size:15px;
  transition:border-color .25s ease,color .25s ease,transform .25s ease;
}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:600;font-size:15px;}
.link-arrow i{transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 星点装饰 ---------- */
.starfield{position:relative;}
.starfield::before{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 26%, rgba(255,255,255,.55), transparent 60%),
    radial-gradient(1.4px 1.4px at 68% 18%, rgba(255,255,255,.4), transparent 60%),
    radial-gradient(1.2px 1.2px at 38% 72%, rgba(255,255,255,.42), transparent 60%),
    radial-gradient(1.6px 1.6px at 84% 62%, rgba(255,255,255,.35), transparent 60%),
    radial-gradient(1.2px 1.2px at 54% 44%, rgba(255,255,255,.3), transparent 60%),
    radial-gradient(1.2px 1.2px at 92% 32%, rgba(255,255,255,.28), transparent 60%);
  opacity:.7;
}
.starfield > *{position:relative;z-index:1;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(5,11,24,.74);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:84px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  color:#fff;font-size:15px;box-shadow:0 8px 24px rgba(43,168,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand-sub{font-size:9.5px;letter-spacing:.2em;color:var(--text-3);font-weight:500;}
.nav-menu{display:flex;align-items:center;gap:34px;}
.nav-menu > a{position:relative;font-size:15px;color:var(--text-2);padding:8px 0;}
.nav-menu > a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:transparent;transition:background .2s ease,box-shadow .2s ease;
}
.nav-menu > a:hover{color:var(--text);}
.nav-menu > a.active{color:var(--text);font-weight:600;}
.nav-menu > a.active::after{background:var(--primary);box-shadow:0 0 12px rgba(43,168,255,.65);}
.nav-actions{display:flex;align-items:center;gap:18px;}
.nav-login-text{font-size:15px;color:var(--text-2);}
.nav-login-text:hover{color:var(--text);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);place-items:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.mobile-cta{display:none;}

/* ---------- 面包屑与文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  padding:52px 0 44px;
  background-image:linear-gradient(rgba(5,11,24,.86),rgba(5,11,24,.94)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;background-repeat:no-repeat;
  border-bottom:1px solid var(--line-weak);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--primary);}
.crumbs .sep{color:rgba(255,255,255,.2);}
.crumbs .now{color:var(--text-2);}
.cat-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(43,168,255,.12);color:var(--primary);border:1px solid rgba(43,168,255,.24);
  margin-bottom:18px;
}
.article-title{
  font-size:clamp(26px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;
  line-height:1.38;max-width:900px;margin-bottom:22px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--text-3);}
.meta-row .m{display:inline-flex;align-items:center;gap:7px;}
.meta-row .m i{color:var(--primary);font-size:12px;}
.meta-row .divider{width:1px;height:12px;background:var(--line);}

/* ---------- 主体布局 ---------- */
.article-main{padding:56px 0 96px;}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 320px;
  gap:64px;justify-content:center;align-items:start;
}
.article-col{min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:16px;line-height:1.9;color:var(--text);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;color:var(--text);}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;letter-spacing:-.01em;
  margin:46px 0 18px;padding-left:16px;scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,#2BA8FF,#0F5FD8);
}
.article-body h3{font-size:19px;font-weight:600;margin:34px 0 14px;}
.article-body h4{font-size:17px;font-weight:600;margin:28px 0 12px;color:var(--text-2);}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(43,168,255,.35);}
.article-body a:hover{color:#61c0ff;border-bottom-color:#61c0ff;}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 1.25em;}
.article-body ul li{list-style:none;position:relative;padding-left:18px;margin-bottom:.55em;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 8px rgba(43,168,255,.6);
}
.article-body ol{list-style:none;counter-reset:olc;}
.article-body ol li{counter-increment:olc;position:relative;padding-left:32px;margin-bottom:.6em;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.35em;
  width:22px;height:22px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--primary);
  background:rgba(43,168,255,.12);border:1px solid rgba(43,168,255,.24);
}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;border-radius:0 14px 14px 0;
  background:var(--glass);border-left:3px solid var(--gold);
  backdrop-filter:blur(14px);color:var(--text-2);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;border:1px solid var(--line);margin:26px auto;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);}
.article-body th{font-weight:600;color:var(--text);background:rgba(255,255,255,.03);}
.article-body tbody tr:hover{background:rgba(43,168,255,.06);}
.article-body pre{
  margin:24px 0;padding:18px 20px;border-radius:14px;overflow-x:auto;
  background:#060D1C;border:1px solid var(--line);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;line-height:1.75;color:#c8dcf5;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:14px;padding:2px 6px;border-radius:6px;
  background:rgba(255,255,255,.06);color:var(--gold);
}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:40px 0 0;padding-top:28px;border-top:1px solid var(--line-weak);}
.tag-row .label{font-size:13px;color:var(--text-3);margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--text-2);
  background:var(--glass);border:1px solid var(--line);
  transition:.22s ease;
}
.tag:hover{color:var(--primary);border-color:rgba(43,168,255,.35);transform:translateY(-2px);}

/* ---------- 空态 ---------- */
.empty-state{
  margin:24px 0 8px;padding:64px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius-md);
  background:var(--glass-strong);
}
.empty-state p{color:var(--text-2);margin-bottom:12px;font-size:15px;}
.empty-state a{color:var(--primary);font-weight:600;}

/* ---------- 上一篇 / 下一篇 ---------- */
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:44px;}
.pn-card{
  display:block;padding:20px 22px;border-radius:var(--radius-md);
  background:var(--glass);border:1px solid var(--line);
  transition:.28s ease;
}
.pn-card:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.3);box-shadow:var(--shadow-card);}
.pn-card .pn-label{display:block;font-size:12px;color:var(--text-3);margin-bottom:8px;letter-spacing:.04em;}
.pn-card .pn-title{display:block;font-size:15.5px;font-weight:600;color:var(--text);line-height:1.6;}
.pn-card.next{text-align:right;}

/* ---------- 相关推荐 ---------- */
.rec-section{margin-top:72px;padding-top:44px;border-top:1px solid var(--line-weak);}
.sec-head{margin-bottom:26px;}
.sec-head h2{font-size:clamp(20px,2.2vw,26px);}
.sec-head p{margin:8px 0 0;font-size:14px;color:var(--text-3);}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-md);
  backdrop-filter:blur(18px);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.rec-card:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.3);box-shadow:var(--shadow-card);color:inherit;}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.05);}
.rec-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:16.5px;font-weight:600;line-height:1.6;}
.rec-body p{font-size:13.5px;color:var(--text-2);margin:0;line-height:1.8;}
.rec-foot{margin-top:auto;font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:108px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  padding:22px;border-radius:var(--radius-md);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(18px);
}
.side-card h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.side-card h3 i{color:var(--primary);font-size:13px;}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;font-size:13.5px;color:var(--text-2);padding:8px 0 8px 14px;
  border-left:1px solid var(--line);line-height:1.6;transition:.2s ease;
}
.toc-list a:hover{color:var(--primary);border-left-color:var(--primary);padding-left:18px;}
.hot-list li{border-bottom:1px solid var(--line-weak);}
.hot-list li:last-child{border-bottom:none;}
.hot-list a{display:flex;gap:12px;align-items:flex-start;padding:12px 0;}
.hot-list .num{
  flex:0 0 22px;height:22px;border-radius:7px;display:grid;place-items:center;
  font-size:11.5px;font-weight:700;background:rgba(43,168,255,.12);
  color:var(--primary);border:1px solid rgba(43,168,255,.22);margin-top:3px;
}
.hot-list .txt{font-size:13.5px;color:var(--text-2);line-height:1.7;}
.hot-list a:hover .txt{color:var(--primary);}
.side-cta{
  padding:24px;border-radius:var(--radius-md);text-align:center;
  background:linear-gradient(160deg,rgba(43,168,255,.14),rgba(15,95,216,.05));
  border:1px solid rgba(43,168,255,.22);
}
.side-cta .side-badge{
  display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;
  color:var(--gold);background:rgba(255,210,122,.1);
  border:1px solid rgba(255,210,122,.28);border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.side-cta h3{font-size:16px;justify-content:center;margin-bottom:10px;}
.side-cta p{font-size:13.5px;color:var(--text-2);margin-bottom:18px;line-height:1.8;}
.side-cta .btn-glow{width:100%;padding:12px 20px;font-size:14.5px;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:84px 0;text-align:center;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:
    radial-gradient(120% 130% at 50% 0%, rgba(43,168,255,.16), transparent 62%),
    linear-gradient(180deg,#060C1B,#04070F);
}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px;}
.cta-band p{max-width:640px;margin:0 auto 30px;color:var(--text-2);font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070F;border-top:1px solid var(--line);
  padding:64px 0 28px;overflow:hidden;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-intro{font-size:13.5px;color:var(--text-3);line-height:1.9;max-width:340px;margin:0;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:var(--text-2);}
.footer-col a:hover{color:var(--primary);text-decoration:underline;}
.footer-col p{font-size:13.5px;color:var(--text-3);line-height:1.9;margin:0 0 8px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-weak);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .sep{margin:0 8px;color:rgba(255,255,255,.15);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:44px;}
}
@media (max-width:991.98px){
  .nav-wrap{height:72px;}
  .nav-toggle{display:grid;}
  .nav-menu{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:28px 24px 40px;overflow-y:auto;
    background:rgba(5,11,24,.97);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    border-top:1px solid var(--line);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .26s ease,transform .26s ease;
  }
  .nav-menu.open{transform:none;opacity:1;pointer-events:auto;}
  .nav-menu > a{
    width:100%;font-size:19px;font-weight:600;color:var(--text);
    padding:18px 0;border-bottom:1px solid var(--line-weak);
  }
  .nav-menu > a::after{display:none;}
  .nav-actions .nav-login-text,.nav-actions .btn-glow.sm{display:none;}
  .mobile-cta{display:block;width:100%;margin-top:24px;border-bottom:none;}
  .mobile-cta .btn-glow{width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .side-sticky{position:static;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 20px;}
  .article-hero{padding:34px 0 32px;}
  .article-main{padding:40px 0 64px;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .article-body h3{font-size:17.5px;}
  .pn-grid{grid-template-columns:1fr;}
  .pn-card.next{text-align:left;}
  .rec-grid{grid-template-columns:1fr;}
  .rec-section{margin-top:52px;padding-top:34px;}
  .cta-band{padding:60px 0;}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .empty-state{padding:48px 18px;}
}
@media (max-width:519.98px){
  .brand-name{font-size:14.5px;}
  .article-title{font-size:24px;}
  .meta-row{gap:10px;}
  .meta-row .divider{display:none;}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root{
  --bg:#050B18;
  --surface-1:#0A1226;
  --surface-2:#0E1830;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --primary:#2BA8FF;
  --primary-deep:#0F5FD8;
  --gold:#FFD27A;
  --cyan:#3DE0C0;
  --text:#E6EDF7;
  --muted:#A7B4C8;
  --dim:#6C7A90;
  --danger:#FF7A7A;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(43,168,255,.35);
  --glow-2:0 10px 34px rgba(43,168,255,.5);
}

/* ===== 基础重置 ===== */
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.35;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(43,168,255,.35);}
*:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px;}

/* ===== 容器 ===== */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1400px){ .container-x{max-width:1320px;} }

/* ===== 星点装饰 ===== */
.starfield{position:relative;overflow:hidden;}
.starfield::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 28%, rgba(255,255,255,.85), transparent),
    radial-gradient(1.4px 1.4px at 68% 18%, rgba(255,255,255,.6), transparent),
    radial-gradient(1.2px 1.2px at 44% 68%, rgba(255,255,255,.5), transparent),
    radial-gradient(1.8px 1.8px at 86% 62%, rgba(255,255,255,.7), transparent),
    radial-gradient(1.2px 1.2px at 10% 80%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.4px 1.4px at 58% 88%, rgba(255,255,255,.5), transparent);
}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,11,24,.74);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:84px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);color:#fff;font-size:14px;
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.brand-sub{font-size:10px;letter-spacing:.18em;color:var(--dim);}
.nav-menu{display:flex;align-items:center;gap:34px;}
.nav-menu > a{position:relative;font-size:15px;color:var(--muted);padding:6px 0;}
.nav-menu > a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(43,168,255,.75);
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-menu > a:hover{color:var(--text);}
.nav-menu > a:hover::after,
.nav-menu > a.active::after{transform:scaleX(1);}
.nav-menu > a.active{color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:18px;}
.nav-login-text{font-size:15px;color:var(--muted);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);cursor:pointer;font-size:16px;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}
.mobile-cta{display:none;}

/* ===== 按钮 ===== */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;border:0;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  color:#fff;font-size:15px;font-weight:600;white-space:nowrap;
  box-shadow:var(--glow);transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--glow-2);filter:brightness(1.08);}
.btn-glow.sm{padding:9px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;
  background:transparent;border:1px solid rgba(255,255,255,.14);
  color:var(--text);font-size:15px;font-weight:600;
  transition:transform .25s ease,border-color .25s ease,color .25s ease;
}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--primary);}
.link-arrow i{transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ===== 首屏 ===== */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(5,11,24,.84),rgba(5,11,24,.93)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.page-hero .hero-inner{
  position:relative;z-index:3;
  min-height:340px;
  padding-top:44px;padding-bottom:52px;
  display:flex;flex-direction:column;justify-content:center;
}
.breadcrumb-x{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--dim);margin-bottom:18px;}
.breadcrumb-x a{color:var(--muted);}
.breadcrumb-x a:hover{color:var(--primary);}
.breadcrumb-x .cur{color:var(--muted);}
.page-hero h1{font-size:clamp(26px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;max-width:840px;}
.hero-lead{margin:14px 0 0;font-size:16px;color:var(--muted);max-width:700px;}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pill{
  display:inline-flex;align-items:center;padding:8px 18px;border-radius:999px;
  font-size:13px;color:var(--muted);
  background:var(--glass);border:1px solid var(--line);
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.pill:hover{color:var(--text);border-color:rgba(43,168,255,.45);transform:translateY(-2px);}
.pill.active{
  color:#fff;border-color:transparent;
  background:linear-gradient(135deg,rgba(43,168,255,.9),rgba(15,95,216,.9));
  box-shadow:0 6px 18px rgba(43,168,255,.28);
}

/* ===== 板块通用 ===== */
.section{padding:96px 0;position:relative;}
.section.tight{padding:72px 0;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.sec-head p{color:var(--muted);margin:0;font-size:16px;}
.badge-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;margin-bottom:16px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--primary);background:rgba(43,168,255,.12);
  border:1px solid rgba(43,168,255,.22);
}
.badge-x.gold{color:var(--gold);background:rgba(255,210,122,.12);border-color:rgba(255,210,122,.28);}

/* ===== 玻璃卡 ===== */
.glass-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.3);box-shadow:var(--shadow-card);}

/* ===== 三卡卖点 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.adv-card{padding:32px 28px;}
.adv-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-size:18px;color:var(--primary);
  background:rgba(43,168,255,.12);border:1px solid rgba(43,168,255,.22);
  margin-bottom:20px;
}
.adv-card h3{font-size:19px;margin-bottom:10px;}
.adv-card p{color:var(--muted);font-size:15px;margin:0;}

/* ===== 不对称图文 ===== */
.split{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.split.reverse{grid-template-columns:5fr 7fr;}
.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);background:var(--surface-2);
  box-shadow:var(--shadow-card);
}
.media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,24,0) 45%,rgba(5,11,24,.6));
}
.split-copy h2{font-size:clamp(22px,2.5vw,30px);margin-bottom:14px;}
.split-copy p{color:var(--muted);font-size:15.5px;}
.mini-list{margin-top:22px;border-top:1px solid var(--line-soft);}
.mini-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line-soft);
  font-size:15px;color:var(--muted);
}
.mini-list li i{color:var(--cyan);font-size:13px;margin-top:8px;}

/* ===== 编号步骤 ===== */
.timeline{border-top:1px solid var(--line);}
.step-row{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:30px 0;border-bottom:1px solid var(--line-soft);
  transition:background .25s ease;
}
.step-row:hover{background:rgba(43,168,255,.05);}
.step-num{
  font-size:34px;font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.step-row h3{font-size:19px;margin-bottom:8px;}
.step-row p{color:var(--muted);font-size:15px;margin:0;max-width:760px;}

/* ===== 细线列表 ===== */
.line-list{border-top:1px solid var(--line);}
.line-list li{
  display:flex;gap:16px;align-items:flex-start;
  padding:24px 2px;border-bottom:1px solid var(--line-soft);
  font-size:15.5px;color:var(--muted);
}
.line-list li i{color:var(--primary);font-size:15px;margin-top:8px;flex-shrink:0;}
.line-list strong{color:var(--text);font-weight:600;margin-right:6px;display:inline;}

/* ===== 底部 CTA ===== */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:24px;
  background:linear-gradient(135deg,rgba(43,168,255,.16),rgba(15,95,216,.05) 55%,rgba(255,210,122,.06));
  padding:64px 48px;text-align:center;
}
.cta-band .cta-inner{position:relative;z-index:3;}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px;}
.cta-band p{color:var(--muted);max-width:620px;margin:0 auto 30px;font-size:16px;}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;overflow:hidden;
  background:#04070F;border-top:1px solid var(--line);
  padding:72px 0 0;margin-top:0;
}
.footer-grid{
  position:relative;z-index:3;
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-intro{color:var(--dim);font-size:14px;line-height:1.85;margin:0;max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{font-size:13.5px;color:var(--muted);}
.footer-col ul a:hover{color:var(--primary);text-decoration:underline;}
.footer-col p{font-size:13.5px;color:var(--dim);margin:0 0 8px;}
.footer-bottom{
  position:relative;z-index:3;
  border-top:1px solid var(--line-soft);
  padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}
.footer-bottom .sep{margin:0 8px;color:rgba(255,255,255,.14);}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .container-x{padding:0 28px;}
  .split,.split.reverse{gap:40px;}
}
@media (max-width:991.98px){
  .nav-menu{
    position:fixed;top:84px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:flex-start;gap:20px;
    padding:36px 28px 48px;
    background:rgba(5,11,24,.96);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    opacity:0;visibility:hidden;transform:translateY(-12px);
    transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
    overflow-y:auto;
  }
  .nav-menu.open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-menu > a{font-size:20px;font-weight:600;color:var(--text);}
  .nav-menu > a::after{display:none;}
  .nav-menu > a.active{color:var(--primary);}
  .mobile-cta{display:block;width:100%;margin-top:18px;}
  .mobile-cta .btn-glow{width:100%;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-login-text{display:none;}
  .grid-3{grid-template-columns:1fr 1fr;gap:20px;}
  .split,.split.reverse{grid-template-columns:1fr;gap:28px;}
  .split.reverse .split-copy{order:2;}
  .split.reverse .media-frame{order:1;}
  .section{padding:72px 0;}
  .section.tight{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:48px 28px;}
}
@media (max-width:767.98px){
  .container-x{padding:0 20px;}
  .page-hero .hero-inner{min-height:300px;padding-top:32px;padding-bottom:38px;}
  .grid-3{grid-template-columns:1fr;}
  .adv-card{padding:26px 22px;}
  .step-row{grid-template-columns:64px 1fr;gap:16px;padding:24px 0;}
  .step-num{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .nav-menu{top:76px;}
  .nav-wrap{height:76px;}
}
@media (max-width:575.98px){
  .brand-name{font-size:14px;}
  .brand-sub{display:none;}
  .btn-glow,.btn-ghost{width:100%;}
  .cta-actions{flex-direction:column;}
  .pill{font-size:12.5px;padding:7px 14px;}
  .section{padding:56px 0;}
  .line-list li,.mini-list li{font-size:15px;}
}

/* roulang page: category2 */
:root{
  --bg:#050B18;
  --surface-1:#0A1226;
  --surface-2:#0E1830;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --primary:#2BA8FF;
  --primary-deep:#0F5FD8;
  --gold:#FFD27A;
  --teal:#3DE0C0;
  --text:#E6EDF7;
  --muted:#A7B4C8;
  --dim:#6C7A90;
  --danger:#FF7A7A;
  --line:rgba(255,255,255,.08);
  --line-soft:rgba(255,255,255,.05);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:18px;
  --r-sm:12px;
  --pill:999px;
  --shadow:0 12px 32px rgba(0,0,0,.45);
  --glow:0 8px 28px rgba(43,168,255,.35);
  --glow-strong:0 10px 36px rgba(43,168,255,.5);
  --container:1200px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease;}
a:hover{color:var(--primary);}
img{max-width:100%;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{color:#fff;margin:0;line-height:1.35;}
p{margin:0 0 1em;}
ul{list-style:none;padding:0;margin:0;}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(43,168,255,.32);color:#fff;}

.container-x{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ============ 星点装饰 ============ */
.starfield{position:relative;overflow:hidden;}
.starfield::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 22%, rgba(255,255,255,.85), transparent 62%),
    radial-gradient(1.2px 1.2px at 22% 74%, rgba(43,168,255,.9), transparent 62%),
    radial-gradient(1.4px 1.4px at 38% 34%, rgba(255,255,255,.65), transparent 62%),
    radial-gradient(1px 1px at 52% 82%, rgba(61,224,192,.8), transparent 62%),
    radial-gradient(1.5px 1.5px at 68% 26%, rgba(255,255,255,.7), transparent 62%),
    radial-gradient(1.1px 1.1px at 82% 60%, rgba(255,210,122,.75), transparent 62%),
    radial-gradient(1.3px 1.3px at 92% 40%, rgba(255,255,255,.6), transparent 62%);
  background-repeat:no-repeat;
}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 28px;
  border:0;
  border-radius:var(--pill);
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  color:#fff;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  box-shadow:var(--glow);
  transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
  cursor:pointer;
  white-space:nowrap;
}
.btn-glow:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--glow-strong);filter:brightness(1.08);}
.btn-glow.sm{padding:10px 20px;font-size:14px;}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 28px;
  border-radius:var(--pill);
  border:1px solid rgba(255,255,255,.14);
  background:transparent;
  color:var(--text);
  font-size:15px;
  font-weight:600;
  transition:border-color .25s ease,color .25s ease,background .25s ease,transform .25s ease;
}
.btn-ghost:hover{border-color:var(--primary);color:#fff;background:rgba(43,168,255,.08);transform:translateY(-2px);}
.link-arrow{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-size:14px;font-weight:600;}
.link-arrow i{transition:transform .25s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,11,24,.74);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:78px;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:38px;height:38px;
  flex:0 0 38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,#2BA8FF,#0F5FD8);
  box-shadow:var(--glow);
  color:#fff;
  font-size:15px;
}
.brand-name{display:block;font-size:15px;font-weight:700;color:#fff;letter-spacing:.01em;line-height:1.3;}
.brand-sub{display:block;font-size:10px;letter-spacing:.22em;color:var(--dim);line-height:1.4;}
.nav-menu{display:flex;align-items:center;gap:34px;}
.nav-menu > a{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
}
.nav-menu > a:hover{color:#fff;}
.nav-menu > a.active{color:#fff;}
.nav-menu > a.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-6px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(43,168,255,.7);
}
.nav-actions{display:flex;align-items:center;gap:18px;}
.nav-login-text{font-size:14px;color:var(--muted);}
.mobile-cta{display:none;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  place-items:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  color:var(--text);
  font-size:16px;
  cursor:pointer;
}

/* ============ 页面头部 ============ */
.page-hero{
  position:relative;
  padding:60px 0 52px;
  border-bottom:1px solid var(--line);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.4;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,11,24,.78),rgba(5,11,24,.94));
}
.page-hero .container-x{position:relative;z-index:3;}
.breadcrumb-x{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--dim);
  margin-bottom:20px;
}
.breadcrumb-x a{color:var(--muted);}
.breadcrumb-x a:hover{color:var(--primary);}
.badge-cat{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;
  padding:6px 14px;
  border-radius:var(--pill);
  background:rgba(43,168,255,.12);
  border:1px solid rgba(43,168,255,.26);
  color:var(--primary);
  margin-bottom:18px;
}
.badge-cat i{font-size:10px;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.28;
  max-width:900px;
}
.hero-line{
  margin:18px 0 0;
  font-size:16px;
  color:var(--muted);
  max-width:720px;
}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.pill{
  font-size:13px;
  padding:8px 18px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--muted);
  transition:.24s ease;
}
.pill:hover{color:#fff;border-color:rgba(43,168,255,.4);}
.pill.active{
  background:linear-gradient(135deg,rgba(43,168,255,.24),rgba(15,95,216,.2));
  border-color:rgba(43,168,255,.48);
  color:#fff;
}

/* ============ 板块 ============ */
.section{padding:100px 0;}
.section.tight{padding:76px 0;}
.section.alt{background:linear-gradient(180deg,rgba(10,18,38,.65),rgba(5,11,24,0));}
.sec-head{max-width:740px;margin-bottom:46px;}
.sec-label{
  display:block;
  font-size:12px;
  letter-spacing:.22em;
  color:var(--primary);
  margin-bottom:12px;
  text-transform:uppercase;
}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:14px;}
.sec-desc{color:var(--muted);font-size:16px;margin:0;}

/* ============ 非对称双栏 ============ */
.asym{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,6fr);
  gap:52px;
  align-items:start;
}
.intro-col{position:sticky;top:110px;}
.intro-figure{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  margin-bottom:26px;
}
.intro-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.intro-title{font-size:20px;font-weight:700;margin-bottom:14px;}
.intro-text{color:var(--muted);font-size:15px;margin-bottom:22px;}
.point-list li{
  display:flex;
  gap:12px;
  padding:14px 0;
  border-top:1px solid var(--line-soft);
  font-size:15px;
  color:var(--muted);
}
.point-list li:last-child{border-bottom:1px solid var(--line-soft);}
.point-list .idx{
  flex:0 0 24px;
  height:24px;
  border-radius:8px;
  display:grid;place-items:center;
  font-size:12px;font-weight:700;
  background:rgba(43,168,255,.14);
  color:var(--primary);
  font-variant-numeric:tabular-nums;
}
.intro-note{
  margin-top:22px;
  padding:16px 18px;
  border-radius:var(--r-sm);
  border:1px dashed rgba(255,255,255,.16);
  font-size:13px;
  color:var(--dim);
  line-height:1.8;
}

.panel{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:26px 26px 18px;
  margin-bottom:22px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.panel:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.3);box-shadow:var(--shadow);}
.panel.featured{
  border-color:rgba(255,210,122,.28);
  background:linear-gradient(180deg,rgba(255,210,122,.06),rgba(255,255,255,.035));
}
.panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.panel-title{font-size:19px;font-weight:600;}
.panel-sub{font-size:13px;color:var(--dim);margin:8px 0 4px;}
.tier-badge{
  font-size:12px;
  padding:5px 13px;
  border-radius:var(--pill);
  background:rgba(43,168,255,.12);
  border:1px solid rgba(43,168,255,.24);
  color:var(--primary);
  white-space:nowrap;
}
.tier-badge.gold{
  background:rgba(255,210,122,.12);
  border-color:rgba(255,210,122,.32);
  color:var(--gold);
}
.rowline{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:13px 0;
  border-bottom:1px solid var(--line-soft);
  font-size:15px;
  color:var(--muted);
}
.rowline:last-of-type{border-bottom:0;}
.rowline i{color:var(--primary);font-size:12px;margin-top:7px;}
.rowline.off i{color:rgba(255,255,255,.2);}
.rowline strong{color:var(--text);font-weight:600;}
.panel-foot{padding:14px 0 6px;border-top:1px solid var(--line-soft);}

/* ============ 横向滚动卡组 ============ */
.hscroll-wrap{position:relative;}
.hscroll{
  display:flex;
  gap:20px;
  overflow-x:auto;
  padding:6px 4px 22px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.hscroll::-webkit-scrollbar{height:6px;}
.hscroll::-webkit-scrollbar-track{background:rgba(255,255,255,.04);border-radius:999px;}
.hscroll::-webkit-scrollbar-thumb{background:rgba(43,168,255,.4);border-radius:999px;}
.hcard{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  padding:14px;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.hcard:hover{transform:translateY(-4px);border-color:rgba(43,168,255,.32);box-shadow:var(--shadow);}
.hcard img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--r-sm);
  border:1px solid var(--line-soft);
  margin-bottom:16px;
}
.hcard h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.hcard p{font-size:14px;color:var(--muted);margin:0 0 14px;line-height:1.85;}
.hcard .hcard-tag{
  display:inline-block;
  font-size:11px;
  padding:3px 10px;
  border-radius:var(--pill);
  background:rgba(43,168,255,.1);
  color:var(--primary);
  border:1px solid rgba(43,168,255,.2);
}
.hscroll-hint{font-size:13px;color:var(--dim);margin-top:4px;}

/* ============ 数据条 ============ */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stat-item{padding:30px 26px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-size:30px;
  font-weight:800;
  color:#fff;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-num em{font-style:normal;font-size:15px;color:var(--primary);font-weight:600;margin-left:4px;}
.stat-label{font-size:13px;color:var(--dim);margin-top:8px;}

/* ============ 细线问答列表 ============ */
.qa-list{border-top:1px solid var(--line);}
.qa-item{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:36px;
  padding:28px 0;
  border-bottom:1px solid var(--line);
}
.qa-q{
  display:flex;
  gap:12px;
  font-size:17px;
  font-weight:600;
  color:#fff;
  line-height:1.7;
}
.qa-q::before{
  content:"";
  flex:0 0 3px;
  align-self:stretch;
  border-radius:3px;
  background:linear-gradient(180deg,#2BA8FF,#0F5FD8);
}
.qa-a{font-size:15px;color:var(--muted);line-height:1.95;margin:0;}

/* ============ 底部 CTA ============ */
.cta-block{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  border:1px solid rgba(43,168,255,.24);
  background:linear-gradient(135deg,rgba(10,18,38,.94),rgba(14,24,48,.9));
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:66px 48px;
  text-align:center;
}
.cta-block .container-inner{position:relative;z-index:3;max-width:720px;margin:0 auto;}
.cta-block h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:16px;}
.cta-block p{color:var(--muted);font-size:16px;margin-bottom:30px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.cta-note{margin-top:22px;font-size:13px;color:var(--dim);}

/* ============ 页脚 ============ */
.site-footer{
  background:#04070F;
  border-top:1px solid var(--line);
  padding:76px 0 0;
  position:relative;
  overflow:hidden;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
  position:relative;
  z-index:2;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-intro{color:var(--muted);font-size:14px;line-height:1.9;max-width:340px;margin:0;}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:18px;color:#fff;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--muted);}
.footer-col a:hover{color:var(--primary);text-decoration:underline;}
.footer-col p{font-size:13px;color:var(--dim);line-height:1.85;margin:0 0 10px;}
.footer-bottom{
  position:relative;
  z-index:2;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  padding:26px 0;
  margin-top:60px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--dim);
}
.footer-bottom .sep{margin:0 6px;opacity:.5;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .asym{gap:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
}
@media (max-width:991px){
  .container-x{padding-left:24px;padding-right:24px;}
  .nav-menu{
    position:fixed;
    top:78px;left:0;right:0;bottom:0;
    flex-direction:column;
    align-items:flex-start;
    gap:22px;
    padding:36px 24px 48px;
    background:rgba(5,11,24,.97);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    opacity:0;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity .26s ease,transform .26s ease;
    overflow-y:auto;
  }
  .nav-menu.open{opacity:1;transform:none;pointer-events:auto;}
  .nav-menu > a{font-size:20px;font-weight:600;color:var(--text);}
  .nav-menu > a.active::after{bottom:-2px;}
  .mobile-cta{display:block;width:100%;margin-top:12px;}
  .mobile-cta .btn-glow{width:100%;padding:15px 24px;}
  .nav-actions .btn-glow,
  .nav-actions .nav-login-text{display:none;}
  .nav-toggle{display:grid;}
  .section{padding:64px 0;}
  .section.tight{padding:56px 0;}
  .asym{grid-template-columns:1fr;gap:34px;}
  .intro-col{position:static;}
  .cta-block{padding:52px 28px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2n){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .qa-item{grid-template-columns:1fr;gap:12px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:767px){
  .container-x{padding-left:20px;padding-right:20px;}
  .page-hero{padding:44px 0 40px;}
  .hero-line{font-size:15px;}
  .hcard{flex:0 0 240px;}
  .stat-item{padding:22px 18px;}
  .stat-num{font-size:24px;}
  .panel{padding:20px 18px 12px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn-glow,
  .cta-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .page-hero h1{font-size:28px;}
  .sec-title{font-size:23px;}
  .brand-name{font-size:13.5px;}
  .brand-sub{font-size:9px;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
}