/* roulang page: index */
:root{
  --brand:#1b57d6;
  --brand-600:#1748b4;
  --brand-700:#123a8f;
  --brand-900:#0c245c;
  --brand-50:#eef3ff;
  --brand-100:#dfe9ff;
  --accent:#12a8a0;
  --accent-soft:#e4f7f5;
  --ink:#0d1730;
  --ink-2:#2a3549;
  --muted:#68758c;
  --line:#e3e9f3;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:26px;
  --sh-1:0 1px 2px rgba(15,23,42,.04), 0 10px 26px rgba(16,42,94,.06);
  --sh-2:0 20px 46px rgba(16,42,94,.13);
  --sh-3:0 30px 70px rgba(11,32,80,.22);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.32;letter-spacing:-.01em;color:var(--ink)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid rgba(27,87,214,.45);outline-offset:2px;border-radius:6px}

.container{max-width:var(--container);padding-left:20px;padding-right:20px}
@media (min-width:1200px){.container{max-width:var(--container)}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:70px;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-700) 100%);
  color:#fff;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(27,87,214,.32);
}
.brand-text{font-size:19px;letter-spacing:.02em;color:var(--ink)}
.brand:hover .brand-text{color:var(--brand)}
.header-nav{display:flex;align-items:center;gap:14px}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;
  font-weight:700;font-size:15px;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
  white-space:nowrap;
}
.btn-x i{font-size:14px}
.btn-x--primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 100%);
  color:#fff;box-shadow:0 12px 26px rgba(27,87,214,.28);
}
.btn-x--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(27,87,214,.36)}
.btn-x--primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(27,87,214,.3)}
.btn-x--ghost{background:transparent;color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-x--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-x--onDark{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34)}
.btn-x--onDark:hover{background:#fff;color:var(--brand-700);transform:translateY(-2px)}
.btn-x--sm{padding:10px 18px;font-size:14px}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:70px 0 78px;
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(27,87,214,.14), transparent 62%),
    radial-gradient(700px 380px at 6% 108%, rgba(18,168,160,.12), transparent 60%),
    linear-gradient(180deg,#ffffff 0%, var(--bg) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);
  font-size:13.5px;font-weight:700;border:1px solid var(--brand-100);
}
.hero-title{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.18;letter-spacing:-.02em;
  margin:22px 0 14px;max-width:14.5em;
}
.hero-sub{
  font-size:clamp(17px,2vw,21px);
  font-weight:700;color:var(--brand-600);
  margin-bottom:16px;
}
.hero-text{color:var(--ink-2);font-size:16.4px;max-width:44em}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-point{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:8px 15px;font-size:14px;color:var(--ink-2);font-weight:600;
  box-shadow:var(--sh-1);
}
.hero-point i{color:var(--accent)}

.group-card{
  position:relative;
  background:linear-gradient(158deg,#12306e 0%, #1b57d6 88%);
  border-radius:var(--r-lg);
  padding:30px 28px 28px;
  color:#fff;
  box-shadow:var(--sh-3);
  overflow:hidden;
}
.group-card::before{
  content:"";position:absolute;width:280px;height:280px;right:-110px;top:-130px;
  background:radial-gradient(circle,rgba(126,224,214,.42),transparent 68%);
}
.group-card__head{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.group-tag{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:700;
}
.group-count{font-size:14px;color:rgba(255,255,255,.82)}
.group-count strong{font-size:26px;font-weight:800;color:#fff;margin-right:4px;letter-spacing:-.02em}
.progress-x{position:relative;height:9px;border-radius:999px;background:rgba(255,255,255,.2);margin:22px 0 12px;overflow:hidden}
.progress-x span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#8fb4ff,#7ee0d6)}
.group-note{font-size:14px;color:rgba(255,255,255,.86);margin-bottom:20px}
.group-actions{display:flex;flex-wrap:wrap;gap:12px}
.group-list{margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);display:grid;gap:11px}
.group-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.4px;color:rgba(255,255,255,.9)}
.group-list i{color:#7ee0d6;margin-top:5px;font-size:12px}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0;position:relative}
.section--soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:800px;margin-bottom:42px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-head--center .eyebrow::before{display:none}
.section-title{font-size:clamp(23px,2.9vw,34px);margin-bottom:14px}
.section-lead{color:var(--muted);font-size:16px}
.section-more{margin-top:30px;display:flex;justify-content:flex-start}

/* ---------- 卡片 ---------- */
.card-x{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;height:100%;
  box-shadow:var(--sh-1);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.card-x__icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand);font-size:18px;margin-bottom:16px;
}
.card-x__icon--accent{background:var(--accent-soft);color:var(--accent)}
.card-x__title{font-size:17.5px;margin-bottom:10px}
.card-x__text{color:var(--muted);font-size:15px}

/* ---------- 步骤 ---------- */
.steps{display:grid;gap:20px;grid-template-columns:repeat(3,1fr)}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:30px 26px;box-shadow:var(--sh-1);
  transition:transform .22s ease, box-shadow .22s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step__num{
  font-size:15px;font-weight:800;color:var(--brand);
  background:var(--brand-50);border-radius:999px;padding:5px 14px;display:inline-block;
  margin-bottom:16px;letter-spacing:.06em;
}
.step__title{font-size:17.5px;margin-bottom:10px}
.step__text{color:var(--muted);font-size:15px}

/* ---------- 入口矩阵 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.entry-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 20px;box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.entry-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.entry-item__top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.entry-item__dot{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:var(--brand);color:#fff;font-size:14px;flex:0 0 34px;
}
.entry-item__title{font-size:16.5px;font-weight:800}
.entry-item__desc{color:var(--muted);font-size:14.4px}
.entry-item__tag{
  display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;
  color:var(--brand-700);background:var(--brand-50);border-radius:999px;padding:4px 11px;
}

/* ---------- 动态流 ---------- */
.feed{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);box-shadow:var(--sh-1);overflow:hidden}
.feed-item{
  display:flex;gap:20px;align-items:flex-start;
  padding:20px 26px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.feed-item:last-child{border-bottom:0}
.feed-item:hover{background:var(--brand-50)}
.feed-time{
  flex:0 0 74px;font-weight:800;color:var(--brand);font-size:15px;
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.feed-body{flex:1}
.feed-title{font-weight:700;font-size:16px;margin-bottom:4px}
.feed-desc{color:var(--muted);font-size:14.6px}
.feed-badge{
  flex:0 0 auto;align-self:center;font-size:12.5px;font-weight:700;
  padding:4px 12px;border-radius:999px;background:var(--accent-soft);color:#0b7c76;
}

/* ---------- 分类卡 ---------- */
.cat-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;height:100%;box-shadow:var(--sh-1);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.cat-card__name{font-size:17px;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:9px}
.cat-card__name i{color:var(--brand);font-size:15px}
.cat-card__desc{color:var(--muted);font-size:14.5px;margin-bottom:14px}
.cat-card__meta{font-size:13px;color:var(--brand-700);font-weight:700;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 数据 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  background:linear-gradient(150deg,#0f2a66 0%,#1b57d6 100%);
  border-radius:var(--r-lg);padding:40px 34px;box-shadow:var(--sh-2);
}
.stat{color:#fff;text-align:left}
.stat__num{font-size:clamp(28px,3.4vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.stat__num small{font-size:16px;font-weight:700;margin-left:3px;opacity:.85}
.stat__label{font-size:14.4px;color:rgba(255,255,255,.8);margin-top:8px}

/* ---------- 排行 ---------- */
.rank{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.rank-row{
  display:flex;align-items:center;gap:18px;padding:18px 24px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{background:var(--brand-50)}
.rank-idx{
  flex:0 0 34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-weight:800;font-size:14.5px;background:var(--brand-50);color:var(--brand-700);
}
.rank-idx--top{background:linear-gradient(135deg,var(--brand),var(--brand-700));color:#fff}
.rank-title{flex:1;font-weight:700;font-size:15.8px}
.rank-title span{display:block;font-weight:400;color:var(--muted);font-size:13.8px;margin-top:2px}
.rank-heat{flex:0 0 auto;font-weight:800;color:var(--ink-2);font-variant-numeric:tabular-nums;font-size:15px}
.rank-trend{flex:0 0 62px;text-align:right;font-size:13px;font-weight:700}
.is-up{color:#0f9d58}
.is-flat{color:var(--muted)}

/* ---------- 评价 ---------- */
.review-score{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--sh-1);height:100%;
}
.review-score__num{font-size:52px;font-weight:800;line-height:1;letter-spacing:-.03em}
.review-score__num small{font-size:19px;color:var(--muted);font-weight:700;margin-left:6px}
.review-stars{color:#f0a500;margin:12px 0 10px;font-size:15px;letter-spacing:2px}
.review-score__meta{color:var(--muted);font-size:14.5px}
.review-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 22px;box-shadow:var(--sh-1);height:100%;
  transition:transform .2s ease, box-shadow .2s ease;
}
.review-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.review-item__text{font-size:15px;color:var(--ink-2);margin-bottom:16px}
.review-item__who{display:flex;align-items:center;gap:11px}
.review-avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);font-weight:800;font-size:14px;
}
.review-item__name{font-weight:700;font-size:14.4px}
.review-item__sub{color:var(--muted);font-size:13px}

/* ---------- 资讯卡 ---------- */
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;height:100%;box-shadow:var(--sh-1);
  transition:transform .22s ease, box-shadow .22s ease;
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2)}
.news-card__cover{
  height:150px;background:linear-gradient(140deg,#1b57d6,#0f2a66);
  position:relative;display:flex;align-items:flex-end;padding:18px;
}
.news-card__cover--b{background:linear-gradient(140deg,#12a8a0,#0d5c72)}
.news-card__cover--c{background:linear-gradient(140deg,#22407e,#4a6fd4)}
.news-card__cover span{
  position:relative;color:#fff;font-weight:800;font-size:14px;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);
  border-radius:999px;padding:5px 13px;backdrop-filter:blur(4px);
}
.news-card__body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-card__title{font-size:17px;margin-bottom:10px}
.news-card__text{color:var(--muted);font-size:14.6px;flex:1}
.news-card__foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;
}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(27,87,214,.12));
}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-28px;top:7px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(27,87,214,.1);
}
.tl-ver{font-weight:800;color:var(--brand-700);font-size:14.5px;margin-bottom:4px}
.tl-title{font-weight:700;font-size:16px;margin-bottom:4px}
.tl-text{color:var(--muted);font-size:14.6px}

/* ---------- 多端 ---------- */
.multi-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:38px 34px;box-shadow:var(--sh-1);
}
.multi-list{display:grid;gap:16px;margin-top:6px}
.multi-list li{display:flex;gap:13px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.multi-list i{color:var(--brand);margin-top:5px;font-size:14px}
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.device{
  border:1px solid var(--line);border-radius:var(--r-sm);padding:20px 16px;text-align:center;
  background:var(--brand-50);transition:transform .2s ease, box-shadow .2s ease;
}
.device:hover{transform:translateY(-4px);box-shadow:var(--sh-1)}
.device i{font-size:22px;color:var(--brand);display:block;margin-bottom:10px}
.device strong{display:block;font-size:15px;margin-bottom:4px}
.device span{font-size:13px;color:var(--muted)}

/* ---------- 常见解答 ---------- */
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--sh-1);height:100%;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-2)}
.faq-q{font-size:16.6px;font-weight:800;margin-bottom:12px;display:flex;gap:11px;align-items:flex-start}
.faq-q i{color:var(--brand);font-size:15px;margin-top:5px}
.faq-a{color:var(--muted);font-size:14.8px}

/* ---------- 收口行动 ---------- */
.cta-band{
  background:linear-gradient(140deg,#0f2a66 0%,#1b57d6 100%);
  border-radius:var(--r-lg);padding:46px 40px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-2);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;width:340px;height:340px;right:-120px;bottom:-190px;
  background:radial-gradient(circle,rgba(126,224,214,.4),transparent 66%);
}
.cta-band__text{position:relative;max-width:640px}
.cta-band__text h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band__text p{color:rgba(255,255,255,.84);font-size:15.6px}
.cta-band__actions{position:relative;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#0a1734;color:rgba(255,255,255,.72);padding:62px 0 30px;margin-top:0}
.footer-brand{display:inline-flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .brand-mark{box-shadow:none;background:linear-gradient(140deg,#2f6be8,#123a8f)}
.footer-brand strong{color:#fff;font-size:18px}
.footer-text{font-size:14.4px;line-height:1.85;max-width:36em;color:rgba(255,255,255,.66)}
.footer-title{color:#fff;font-size:15.5px;font-weight:800;margin-bottom:16px}
.footer-links{display:grid;gap:10px;font-size:14.4px}
.footer-links a{color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.4px;color:rgba(255,255,255,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .entry-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991.98px){
  .hero{padding:52px 0 60px}
  .section{padding:60px 0}
  .steps{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr);padding:32px 26px;gap:26px}
  .cta-band{padding:38px 30px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .header-inner{min-height:62px}
  .brand-text{font-size:17px}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;border-radius:10px}
  .btn-x{padding:11px 18px;font-size:14px}
  .hero-title{max-width:100%}
  .section-head{margin-bottom:30px}
  .feed-item{flex-wrap:wrap;gap:8px;padding:18px 20px}
  .feed-time{flex:0 0 100%}
  .rank-row{flex-wrap:wrap;gap:10px;padding:16px 18px}
  .rank-trend{flex:0 0 100%;text-align:left}
  .device-grid{grid-template-columns:1fr}
  .multi-wrap{padding:26px 22px}
  .review-score{padding:24px}
  .cta-band__actions{width:100%}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .entry-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .hero-points{gap:8px}
  .hero-point{font-size:13.2px;padding:7px 12px}
  .group-card{padding:24px 20px}
  .btn-x{width:100%}
  .header-nav .btn-x{width:auto}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --brand:#1b57d6;
  --brand-600:#1748b4;
  --brand-700:#123a8f;
  --brand-900:#0c245c;
  --brand-50:#eef3ff;
  --brand-100:#dfe9ff;
  --accent:#12a8a0;
  --accent-soft:#e4f7f5;
  --ink:#0d1730;
  --ink-2:#2a3549;
  --muted:#68758c;
  --line:#e3e9f3;
  --bg:#f5f8fd;
  --surface:#ffffff;
  --r-xs:8px;
  --r-sm:12px;
  --r-md:18px;
  --r-lg:26px;
  --sh-1:0 1px 2px rgba(15,23,42,.04), 0 10px 26px rgba(16,42,94,.06);
  --sh-2:0 20px 46px rgba(16,42,94,.13);
  --sh-3:0 30px 70px rgba(11,32,80,.22);
  --container:1180px;
}
/* ===== 基础 reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:hover{color:var(--brand)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{max-width:var(--container);padding-left:20px;padding-right:20px;margin:0 auto}
/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:70px;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:11px;font-weight:800}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-700) 100%);
  color:#fff;font-size:17px;font-weight:800;
  box-shadow:0 8px 18px rgba(27,87,214,.32);
}
.brand-text{font-size:19px;letter-spacing:.02em;color:var(--ink)}
.brand:hover .brand-text{color:var(--brand)}
.header-nav{display:flex;align-items:center;gap:14px}
.header-nav .btn-x--sm.is-active{
  background:linear-gradient(135deg,var(--brand-700) 0%,var(--brand) 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.22),0 10px 22px rgba(18,58,143,.32);
}
/* ===== 按钮 ===== */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:999px;
  font-weight:700;font-size:15px;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
  white-space:nowrap;
}
.btn-x i{font-size:14px}
.btn-x--primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 100%);
  color:#fff;box-shadow:0 12px 26px rgba(27,87,214,.28);
}
.btn-x--primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(27,87,214,.36)}
.btn-x--primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(27,87,214,.3)}
.btn-x--ghost{background:transparent;color:var(--ink);border-color:var(--line);box-shadow:var(--sh-1)}
.btn-x--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-x--onDark{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34)}
.btn-x--onDark:hover{background:#fff;color:var(--brand-700);transform:translateY(-2px)}
.btn-x--sm{padding:10px 18px;font-size:14px}
.btn-x--block{width:100%}
/* ===== 首屏（拼团转化） ===== */
.hero{
  position:relative;overflow:hidden;
  padding:66px 0 74px;
  background:
    radial-gradient(900px 420px at 88% -8%, rgba(27,87,214,.14), transparent 62%),
    radial-gradient(700px 380px at 6% 108%, rgba(18,168,160,.12), transparent 60%),
    linear-gradient(180deg,#ffffff 0%, var(--bg) 100%);
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:var(--brand-50);color:var(--brand-700);
  font-size:13.5px;font-weight:700;border:1px solid var(--brand-100);
}
.hero-badge i{color:var(--accent)}
.hero-kicker{
  margin-top:20px;font-size:13px;font-weight:800;letter-spacing:.16em;
  color:var(--brand);text-transform:uppercase;
}
.hero-title{
  font-size:clamp(28px,4.2vw,48px);
  line-height:1.2;letter-spacing:-.02em;
  margin:12px 0 14px;max-width:15em;
}
.hero-sub{
  font-size:clamp(16px,1.9vw,20px);
  font-weight:700;color:var(--brand-600);
  margin-bottom:14px;
}
.hero-text{color:var(--ink-2);font-size:16.2px;max-width:44em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-point{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:8px 15px;font-size:14px;color:var(--ink-2);font-weight:600;
  box-shadow:var(--sh-1);
}
.hero-point i{color:var(--accent)}
/* ===== 拼团卡 ===== */
.group-card{
  position:relative;
  background:linear-gradient(158deg,#12306e 0%, #1b57d6 88%);
  border-radius:var(--r-lg);
  padding:28px 26px 26px;
  color:#fff;
  box-shadow:var(--sh-3);
  overflow:hidden;
}
.group-card::before{
  content:"";position:absolute;width:280px;height:280px;right:-110px;top:-130px;
  background:radial-gradient(circle,rgba(126,224,214,.42),transparent 68%);
}
.group-card__head{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.group-tag{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:6px 13px;border-radius:999px;font-size:13px;font-weight:700;
}
.group-tag--light{background:rgba(126,224,214,.2);border-color:rgba(126,224,214,.42)}
.group-title{position:relative;margin-top:18px;font-size:21px;font-weight:800;color:#fff}
.group-note{position:relative;font-size:14px;color:rgba(255,255,255,.78);margin-top:6px}
.group-progress{position:relative;margin-top:20px}
.group-progress__meta{display:flex;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.86);margin-bottom:9px}
.group-progress__track{height:9px;border-radius:999px;background:rgba(255,255,255,.2);overflow:hidden}
.group-progress__bar{height:100%;width:70%;border-radius:999px;background:linear-gradient(90deg,#7ee0d6 0%,#b7f0ea 100%)}
.group-avatars{position:relative;display:flex;align-items:center;gap:8px;margin-top:18px;flex-wrap:wrap}
.group-avatar{
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:800;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);color:#fff;
}
.group-avatar--more{width:auto;padding:0 12px;border-radius:999px;font-size:12.5px}
.group-list{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.18);display:grid;gap:11px}
.group-list li{display:flex;align-items:flex-start;gap:10px;font-size:14.4px;color:rgba(255,255,255,.9)}
.group-list i{color:#7ee0d6;margin-top:5px;font-size:12px}
.group-card .btn-x{margin-top:22px}
/* ===== 通用板块 ===== */
.section{padding:74px 0;position:relative}
.section--soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section-head{max-width:820px;margin-bottom:40px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-head--center .eyebrow::before{display:none}
.section-title{font-size:clamp(22px,2.8vw,32px);line-height:1.35;margin-bottom:14px}
.section-lead{color:var(--muted);font-size:16px}
.section-more{margin-top:30px;display:flex;justify-content:flex-start}
/* ===== 数据条 ===== */
.stat-strip{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.stat-cell{padding:26px 24px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--brand-700);line-height:1.1;letter-spacing:-.02em}
.stat-num span{font-size:15px;font-weight:700;color:var(--muted);margin-left:3px}
.stat-label{margin-top:8px;font-size:14rem;font-size:14px;color:var(--ink-2);font-weight:700}
.stat-desc{margin-top:5px;font-size:13.6px;color:var(--muted)}
/* ===== 标签 ===== */
.tag-x{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.8px;font-weight:700;
  background:var(--brand-50);color:var(--brand-700);border:1px solid var(--brand-100);
}
.tag-x--accent{background:var(--accent-soft);color:#0d7c76;border-color:#c6ece8}
.tag-x--plain{background:#f2f5fb;color:var(--muted);border-color:var(--line)}
/* ===== 频道矩阵 ===== */
.matrix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.matrix-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 22px;
  box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .24s ease, border-color .24s ease;
  display:flex;flex-direction:column;height:100%;
}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-100)}
.matrix-icon{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand);
  font-size:18px;margin-bottom:16px;
}
.matrix-title{font-size:17.5px;font-weight:800;margin-bottom:8px}
.matrix-text{font-size:14.6px;color:var(--ink-2);flex:1}
.matrix-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
/* ===== 合辑列表 ===== */
.topic-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.topic-card{
  display:flex;gap:20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s ease, box-shadow .24s ease;
}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.topic-cover{
  flex:0 0 108px;height:108px;border-radius:var(--r-sm);
  background:linear-gradient(150deg,#e6efff 0%, #d6e6ff 60%, #cfeee9 100%);
  display:grid;place-items:center;position:relative;overflow:hidden;
}
.topic-cover i{font-size:26px;color:var(--brand-700);opacity:.82}
.topic-cover--dark{background:linear-gradient(150deg,#12306e 0%,#1b57d6 100%)}
.topic-cover--dark i{color:#fff;opacity:.9}
.topic-cover--teal{background:linear-gradient(150deg,#0f7f79 0%,#12a8a0 100%)}
.topic-cover--teal i{color:#fff;opacity:.9}
.topic-cover--ink{background:linear-gradient(150deg,#26324a 0%,#3c4c6d 100%)}
.topic-cover--ink i{color:#fff;opacity:.9}
.topic-body{flex:1;min-width:0}
.topic-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.topic-title{font-size:17px;font-weight:800;margin-bottom:8px;line-height:1.5}
.topic-text{font-size:14.4px;color:var(--muted)}
.topic-foot{margin-top:14px;display:flex;flex-wrap:wrap;gap:14px;font-size:13.2px;color:var(--muted)}
.topic-foot span{display:inline-flex;align-items:center;gap:6px}
.topic-foot i{color:var(--brand);font-size:12px}
/* ===== 时间线 ===== */
.timeline{position:relative;display:grid;gap:18px}
.tl-item{
  display:grid;grid-template-columns:150px 1fr;gap:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:border-color .22s ease, box-shadow .24s ease;
}
.tl-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-2)}
.tl-time{display:flex;flex-direction:column;gap:6px}
.tl-clock{font-size:20px;font-weight:800;color:var(--brand-700);letter-spacing:.01em}
.tl-batch{font-size:12.8px;color:var(--muted);font-weight:700}
.tl-body{min-width:0}
.tl-title{font-size:16.5px;font-weight:800;margin-bottom:7px}
.tl-text{font-size:14.4px;color:var(--ink-2)}
/* ===== 热度排行 ===== */
.rank-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:start}
.rank-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
}
.rank-item{
  display:flex;align-items:center;gap:16px;
  padding:16px 22px;border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.rank-item:last-child{border-bottom:0}
.rank-item:hover{background:#fafcff}
.rank-no{
  flex:0 0 34px;width:34px;height:34px;border-radius:11px;
  display:grid;place-items:center;font-weight:800;font-size:14px;
  background:#f2f5fb;color:var(--muted);
}
.rank-item:nth-child(1) .rank-no{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 100%);color:#fff}
.rank-item:nth-child(2) .rank-no{background:var(--brand-50);color:var(--brand-700)}
.rank-item:nth-child(3) .rank-no{background:var(--accent-soft);color:#0d7c76}
.rank-main{flex:1;min-width:0}
.rank-title{font-size:15.6px;font-weight:800;margin-bottom:3px}
.rank-desc{font-size:13.4px;color:var(--muted)}
.rank-val{font-size:13.4px;font-weight:800;color:var(--brand-700);white-space:nowrap}
.rank-side{
  background:linear-gradient(160deg,#0f2a63 0%, #1b57d6 92%);
  border-radius:var(--r-lg);padding:28px 26px;color:#fff;box-shadow:var(--sh-3);
}
.rank-side h3{font-size:19px;font-weight:800;margin-bottom:12px}
.rank-side p{font-size:14.6px;color:rgba(255,255,255,.82)}
.rank-side ul{margin-top:20px;display:grid;gap:11px;border-top:1px solid rgba(255,255,255,.18);padding-top:18px}
.rank-side li{display:flex;gap:10px;align-items:flex-start;font-size:14.3px;color:rgba(255,255,255,.9)}
.rank-side li i{color:#7ee0d6;margin-top:5px;font-size:12px}
/* ===== 反馈摘录 ===== */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease, box-shadow .24s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.quote-mark{font-size:22px;color:var(--brand-100);margin-bottom:14px}
.quote-text{font-size:15px;color:var(--ink-2);flex:1}
.quote-author{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;gap:11px}
.quote-avatar{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-50);color:var(--brand-700);font-weight:800;font-size:14px;
}
.quote-name{font-size:14.2px;font-weight:800}
.quote-role{font-size:12.8px;color:var(--muted)}
/* ===== FAQ ===== */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:border-color .22s ease, box-shadow .24s ease;
}
.faq-item:hover{border-color:var(--brand-100);box-shadow:var(--sh-2)}
.faq-q{display:flex;gap:12px;align-items:flex-start;font-size:16.4px;font-weight:800;margin-bottom:10px}
.faq-q i{color:var(--brand);margin-top:5px;font-size:15px}
.faq-a{font-size:14.8px;color:var(--ink-2);padding-left:27px}
/* ===== 收口 CTA ===== */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,#0d2450 0%, #1b57d6 88%);
  border-radius:var(--r-lg);
  padding:46px 44px;
  color:#fff;
  box-shadow:var(--sh-3);
}
.cta-band::after{
  content:"";position:absolute;width:380px;height:380px;right:-140px;bottom:-190px;
  background:radial-gradient(circle,rgba(126,224,214,.4),transparent 66%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:12px;position:relative}
.cta-band p{font-size:15.2px;color:rgba(255,255,255,.84);max-width:52em;position:relative}
.cta-form{
  position:relative;margin-top:28px;
  display:grid;grid-template-columns:1.1fr 1fr auto;gap:14px;align-items:end;
}
.field{display:flex;flex-direction:column;gap:8px;min-width:0}
.field-label{font-size:13px;font-weight:700;color:rgba(255,255,255,.82)}
.field-input{
  width:100%;padding:13px 16px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.12);color:#fff;
  transition:border-color .2s ease, background .2s ease;
}
.field-input::placeholder{color:rgba(255,255,255,.6)}
.field-input:focus{outline:none;border-color:#7ee0d6;background:rgba(255,255,255,.18)}
.field-input option{color:#0d1730}
.cta-form .btn-x--primary{background:#fff;color:var(--brand-700);box-shadow:0 14px 30px rgba(6,20,52,.34)}
.cta-form .btn-x--primary:hover{background:#f2f7ff;color:var(--brand-700)}
.form-note{position:relative;margin-top:16px;font-size:13.2px;color:rgba(255,255,255,.72)}
.form-ok{
  position:relative;margin-top:16px;font-size:14px;font-weight:700;
  color:#0d1730;background:#7ee0d6;border-radius:var(--r-sm);
  padding:11px 16px;display:none;
}
.form-ok.is-on{display:block}
/* ===== 页脚 ===== */
.site-footer{
  margin-top:0;background:#0b1a3a;color:rgba(255,255,255,.78);
  padding:56px 0 26px;
}
.footer-brand{display:inline-flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(140deg,#3f7bf0 0%, #1b57d6 100%);box-shadow:none}
.footer-brand strong{color:#fff;font-size:18px;letter-spacing:.02em}
.footer-text{font-size:14.2px;color:rgba(255,255,255,.68);max-width:44em}
.footer-title{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14.2px;color:rgba(255,255,255,.7)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13.2px;color:rgba(255,255,255,.56);
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero{padding:56px 0 62px}
  .section{padding:62px 0}
  .matrix-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr 1fr}
  .rank-wrap{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-form{grid-template-columns:1fr 1fr;gap:12px}
  .cta-form .btn-x{grid-column:1 / -1}
}
@media (max-width:768px){
  body{font-size:15.6px;line-height:1.72}
  .header-inner{min-height:64px}
  .brand-text{font-size:17px}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:15px}
  .hero-title{max-width:none}
  .hero-actions .btn-x{flex:1 1 46%}
  .group-card{padding:24px 20px}
  .topic-list{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .tl-item{grid-template-columns:1fr;gap:12px}
  .tl-time{flex-direction:row;align-items:baseline;gap:12px}
  .cta-band{padding:34px 24px}
  .cta-form{grid-template-columns:1fr}
  .section{padding:54px 0}
  .matrix-grid{grid-template-columns:1fr}
  .section-more{margin-top:24px}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .hero{padding:44px 0 50px}
  .hero-actions .btn-x{flex:1 1 100%}
  .hero-point{font-size:13.2px;padding:7px 12px}
  .topic-card{flex-direction:column}
  .topic-cover{flex:0 0 auto;width:100%;height:104px}
  .stat-strip{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line)}
  .stat-cell:last-child{border-bottom:0}
  .rank-item{padding:14px 16px;gap:12px}
  .footer-bottom{flex-direction:column;gap:8px}
  .section-title{font-size:21px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}