/* roulang page: index */
:root{
  --ink:#151129;
  --ink-2:#1E1938;
  --brand:#6A35E8;
  --brand-soft:rgba(106,53,232,.10);
  --brand-line:rgba(106,53,232,.32);
  --brand-2:#16C8B8;
  --accent:#FF8A3D;
  --accent-dark:#E87428;
  --paper:#F6F4F1;
  --card:#FFFFFF;
  --line:#E7E2DC;
  --text:#241F35;
  --muted:#6B6580;
  --ok:#1FA97A;
  --warn:#E0A020;
  --err:#D9453F;
  --r-card:14px;
  --r-img:16px;
  --r-btn:999px;
  --sh-sm:0 1px 2px rgba(21,17,41,.06);
  --sh-md:0 8px 24px rgba(21,17,41,.08);
  --sh-lg:0 16px 40px rgba(21,17,41,.14);
  --container:1200px;
  --font:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,sans-serif;
  --mono:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:132px;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;background-color:#EFEBF5;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
[hidden]{display:none !important;}
h1,h2,h3,h4{font-family:var(--font);color:var(--text);margin:0 0 14px;letter-spacing:.01em;}
h1{font-size:44px;line-height:1.25;font-weight:700;}
h2{font-size:32px;line-height:1.35;font-weight:700;}
h3{font-size:21px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.3em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;}
li{margin-bottom:.4em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--paper{background:var(--paper);}
.section--white{background:#FFFFFF;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:linear-gradient(90deg,var(--brand-soft),rgba(22,200,184,.12));
  border:1px solid var(--brand-line);border-radius:999px;padding:4px 12px;margin-bottom:16px;
}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head p{color:var(--muted);font-size:15px;line-height:1.9;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#3A1B05;box-shadow:0 6px 18px rgba(255,138,61,.30);}
.btn--primary:hover{background:#FF9C58;color:#3A1B05;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,138,61,.36);}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn--ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn--outline{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn--outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn--link{height:auto;padding:0;border:0;border-radius:0;background:none;color:var(--brand);font-weight:600;}
.btn--link:hover{color:var(--brand-2);}
.btn--sm{height:42px;padding:0 20px;font-size:14px;}
.btn:active{transform:translateY(0);}

/* ---------- 标签 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:#0E7A70;background:rgba(22,200,184,.10);
  border:1px solid rgba(22,200,184,.45);border-radius:999px;
  padding:3px 11px;line-height:1.5;
}
.pill--brand{color:var(--brand);background:var(--brand-soft);border-color:var(--brand-line);}
.pill--muted{color:var(--muted);background:#F1EEE9;border-color:var(--line);letter-spacing:.02em;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
}
.topbar{height:64px;display:flex;align-items:center;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  display:flex;align-items:center;justify-content:center;color:#fff;
  font-size:14px;font-weight:700;letter-spacing:0;
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;white-space:nowrap;}
.brand__text span{color:var(--brand);}
.topbar__search{flex:1 1 auto;max-width:420px;position:relative;}
.topbar__search i{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;}
.topbar__search input{
  width:100%;height:44px;border:1px solid var(--line);border-radius:999px;
  padding:0 18px 0 42px;font-size:14px;color:var(--text);background:#FBFAF9;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.topbar__search input::placeholder{color:#A29CB2;}
.topbar__search input:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(106,53,232,.14);
}
.topbar__right{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.topbar__link{font-size:14px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:6px;}
.topbar__link:hover{color:var(--brand);}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--text);align-items:center;justify-content:center;font-size:16px;cursor:pointer;
}
.burger:hover{border-color:var(--brand);color:var(--brand);}
.channelbar{border-top:1px solid var(--line);background:#fff;}
.channelbar__scroll{
  display:flex;align-items:center;gap:8px;height:56px;
  overflow-x:auto;white-space:nowrap;
  scrollbar-width:thin;-ms-overflow-style:none;
}
.channelbar__scroll::-webkit-scrollbar{height:3px;}
.channelbar__scroll::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px;}
.channel{
  display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;
  height:36px;padding:0 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--text);background:#F4F1EC;
  border:1px solid transparent;transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.channel:hover{background:#EFE8FF;color:var(--brand);}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(106,53,232,.28);}
.channel.is-active:hover{background:var(--brand);color:#fff;}
.channel i{font-size:12px;opacity:.8;}
.drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:14px 0 20px;
}
.drawer.is-open{display:block;}
.drawer a{
  display:block;padding:11px 4px;font-size:15px;font-weight:600;color:var(--text);
  border-bottom:1px dashed var(--line);
}
.drawer a:hover{color:var(--brand);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(106,53,232,.42), transparent 62%),
    radial-gradient(700px 380px at 92% 12%, rgba(22,200,184,.20), transparent 65%),
    linear-gradient(180deg,#151129 0%,#1B1538 100%);
  padding:88px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,.15));
}
.hero .container{position:relative;z-index:2;}
.hero h1{color:#fff;font-size:46px;margin-bottom:18px;}
.hero__sub{color:#C7C1DE;font-size:17px;line-height:1.9;max-width:36em;margin-bottom:30px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.hero__visual{position:relative;}
.hero__visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-img);border:2px solid rgba(255,255,255,.22);
  box-shadow:0 24px 60px rgba(9,6,24,.55), 0 0 60px rgba(106,53,232,.20);
}
.hero__badge{
  position:absolute;left:-14px;bottom:22px;background:#fff;color:var(--text);
  border-radius:12px;padding:12px 16px;box-shadow:var(--sh-lg);
  display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;
}
.hero__badge i{color:var(--accent);}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;border-top:1px solid rgba(255,255,255,.14);padding-top:26px;}
.trust-item{display:flex;gap:12px;align-items:flex-start;min-width:210px;flex:1 1 210px;}
.trust-item i{
  width:36px;height:36px;border-radius:10px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;
  background:rgba(22,200,184,.16);color:var(--brand-2);font-size:15px;border:1px solid rgba(22,200,184,.32);
}
.trust-item strong{display:block;color:#fff;font-size:15px;font-weight:600;margin-bottom:2px;}
.trust-item span{color:#A9A3C2;font-size:13px;line-height:1.7;}

/* ---------- 卖点非对称 ---------- */
.feature-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;}
.feature-lead{
  background:linear-gradient(150deg,#FFFFFF 55%,rgba(106,53,232,.07));
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:34px;box-shadow:var(--sh-sm);
  display:flex;flex-direction:column;justify-content:space-between;
}
.feature-lead h3{font-size:26px;line-height:1.4;margin-bottom:14px;}
.feature-lead p{color:var(--muted);font-size:15px;}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.feature-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh-sm);
  display:flex;gap:16px;align-items:flex-start;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-item:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:var(--brand-line);}
.feature-item__num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:15px;font-weight:700;color:var(--brand);
  background:linear-gradient(140deg,rgba(106,53,232,.16),rgba(22,200,184,.16));
  border:1px solid var(--brand-line);
}
.feature-item h4{font-size:18px;font-weight:600;margin-bottom:6px;}
.feature-item p{font-size:14px;color:var(--muted);line-height:1.85;margin:0;}

/* ---------- Zigzag ---------- */
.zigzag{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.zigzag + .zigzag{margin-top:80px;}
.zigzag__media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-md);background:#EFEBF5;}
.zigzag__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.zigzag__media:hover img{transform:scale(1.03);}
.zigzag__index{
  position:absolute;top:16px;left:16px;background:rgba(21,17,41,.78);color:#fff;
  font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.06em;
  padding:5px 12px;border-radius:999px;
}
.zigzag__body h3{font-size:26px;line-height:1.45;margin-bottom:14px;}
.zigzag__body p{color:var(--muted);font-size:15.5px;}
.zigzag__list{list-style:none;padding:0;margin:18px 0 22px;}
.zigzag__list li{position:relative;padding-left:24px;font-size:15px;color:var(--text);margin-bottom:10px;}
.zigzag__list li::before{
  content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:3px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
}
.zigzag--reverse .zigzag__media{order:2;}
.zigzag--reverse .zigzag__body{order:1;}

/* ---------- 最新信息 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);position:relative;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  overflow:hidden;
}
.news-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:0;
  background:var(--brand);transition:width .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--brand-line);color:inherit;}
.news-card:hover::before{width:3px;}
.news-card__top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;}
.news-card__title{
  font-size:18px;font-weight:600;line-height:1.55;color:var(--text);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-card__title{color:var(--brand);}
.news-card__desc{
  font-size:14px;color:var(--muted);line-height:1.85;margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;
}
.news-card__meta i{color:var(--brand);font-size:12px;}
.list-empty{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:40px 24px;text-align:center;color:var(--muted);font-size:15px;
}
.list-empty a{font-weight:600;margin-left:6px;}

/* ---------- 社会认同 ---------- */
.metric{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;text-align:left;box-shadow:var(--sh-sm);height:100%;
  transition:transform .2s ease,box-shadow .2s ease;
}
.metric:hover{transform:translateY(-3px);box-shadow:var(--sh-md);}
.metric__num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--brand);line-height:1.1;}
.metric__num span{font-size:16px;color:var(--accent);margin-left:4px;}
.metric__label{font-size:14px;color:var(--muted);margin-top:8px;}
.voice-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;height:100%;box-shadow:var(--sh-sm);
}
.voice-card__quote{font-size:15px;line-height:1.9;color:var(--text);margin-bottom:18px;}
.voice-card__who{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.voice-card__avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(106,53,232,.20),rgba(22,200,184,.20));
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-weight:700;font-size:14px;
}
.partner-strip{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.partner-strip span{
  flex:1 1 160px;text-align:center;padding:16px 10px;border-radius:12px;
  background:#EFEDEA;color:#8A849B;font-size:13px;font-weight:600;letter-spacing:.04em;
  filter:grayscale(1);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.is-open{border-color:var(--brand-line);box-shadow:var(--sh-md);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-q i{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);font-size:12px;transition:transform .25s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a__inner{
  padding:0 24px 22px 27px;border-left:3px solid var(--brand);
  margin-left:24px;font-size:15.5px;color:var(--muted);line-height:1.9;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:
    radial-gradient(700px 320px at 85% 0%, rgba(106,53,232,.38), transparent 60%),
    linear-gradient(180deg,#191338,#151129);
  color:#fff;padding:78px 0;
}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-band p{color:#B9B3CC;font-size:16px;max-width:44em;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- 页脚 ---------- */
.site-footer{background:#151129;color:#B9B3CC;padding:72px 0 0;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.site-footer a{color:#B9B3CC;display:inline-block;padding:4px 0;font-size:14px;}
.site-footer a:hover{color:var(--brand-2);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;font-size:16px;}
.site-footer p{font-size:13.5px;line-height:1.85;color:#9A94B2;max-width:30em;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);margin-top:56px;padding:20px 0 30px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#8E88A6;
}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:16px;
  background:#151129;color:#fff;border:1px solid rgba(255,255,255,.14);
  border-radius:16px;padding:14px 16px 14px 20px;box-shadow:var(--sh-lg);
  max-width:520px;
}
.sticky-cta p{margin:0;font-size:14px;color:#D8D3E8;line-height:1.6;}
.sticky-cta__close{
  background:transparent;border:1px solid rgba(255,255,255,.22);color:#B9B3CC;
  width:30px;height:30px;border-radius:50%;font-size:15px;line-height:1;cursor:pointer;flex:0 0 auto;
}
.sticky-cta__close:hover{color:#fff;border-color:#fff;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  h1{font-size:34px;}
  .hero h1{font-size:34px;}
  h2{font-size:26px;}
  .section{padding:64px 0;}
  .container{padding:0 18px;}
  .feature-grid{grid-template-columns:1fr;}
  .zigzag{grid-template-columns:1fr;gap:28px;}
  .zigzag--reverse .zigzag__media{order:0;}
  .zigzag--reverse .zigzag__body{order:0;}
  .topbar__search{display:none;}
  .burger{display:inline-flex;}
  .topbar{height:56px;gap:12px;}
  .topbar__link{display:none;}
  .channelbar__scroll{height:52px;}
  .hero{padding:64px 0 72px;}
}
@media screen and (max-width:639px){
  body{padding-bottom:0;font-size:15.5px;}
  h1{font-size:28px;}
  .hero h1{font-size:28px;}
  h2{font-size:23px;}
  .hero__sub{font-size:15.5px;}
  .hero__badge{left:10px;bottom:12px;font-size:12px;padding:9px 12px;}
  .feature-lead{padding:24px;}
  .feature-lead h3{font-size:21px;}
  .zigzag__body h3{font-size:21px;}
  .section{padding:56px 0;}
  .metric__num{font-size:28px;}
  .sticky-cta{
    left:12px;right:12px;bottom:0;max-width:none;border-radius:14px 14px 0 0;
    padding:12px 12px calc(12px + env(safe-area-inset-bottom)) 16px;gap:10px;
  }
  .sticky-cta p{font-size:13px;}
  .footer-bottom{flex-direction:column;}
}

/* roulang page: article */
:root{
  --ink:#151129;
  --brand:#6A35E8;
  --brand-2:#16C8B8;
  --accent:#FF8A3D;
  --paper:#F6F4F1;
  --card:#FFFFFF;
  --line:#E7E2DC;
  --text:#241F35;
  --muted:#6B6580;
  --ok:#1FA97A;
  --warn:#E0A020;
  --err:#D9453F;
  --r-card:14px;
  --r-img:16px;
  --r-btn:999px;
  --r-btn-alt:10px;
  --sh-sm:0 1px 2px rgba(21,17,41,.06);
  --sh-md:0 8px 24px rgba(21,17,41,.08);
  --sh-lg:0 14px 34px rgba(21,17,41,.12);
  --container:1200px;
  --topbar-h:64px;
  --channel-h:52px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:134px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:#5a27d6;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4,h5{color:var(--text);font-weight:700;letter-spacing:.01em;margin:0;}
p{margin:0 0 1.2em;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--sm{height:42px;padding:0 20px;font-size:14.5px;}
.btn--primary{background:var(--accent);color:#241F35;box-shadow:0 8px 20px rgba(255,138,61,.28);}
.btn--primary:hover{background:#ff9a58;color:#241F35;transform:translateY(-1px);box-shadow:0 12px 24px rgba(255,138,61,.34);}
.btn--ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn--ghost:hover{background:rgba(106,53,232,.08);color:var(--brand);transform:translateY(-1px);}
.btn--light{background:#fff;color:var(--ink);border-color:#fff;}
.btn--light:hover{background:#F1EDFF;color:var(--ink);transform:translateY(-1px);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
}
.topbar{height:var(--topbar-h);display:flex;align-items:center;}
.topbar__inner{display:flex;align-items:center;gap:20px;width:100%;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.brand__mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;
  box-shadow:0 6px 16px rgba(106,53,232,.28);
}
.brand__text{font-size:17.5px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap;}
.brand__text span{color:var(--brand);}
.brand:hover{color:var(--ink);}
.search-box{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.search-box i{position:absolute;left:16px;color:var(--muted);font-size:14px;pointer-events:none;}
.search-box input{
  width:100%;height:44px;padding:0 16px 0 40px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#FBFAF8;color:var(--text);font-size:14.5px;outline:none;
  transition:border-color .２s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box input::placeholder{color:#9A94AC;}
.search-box input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(106,53,232,.14);}
.topbar__actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;margin-left:auto;}
.topbar__link{font-size:14.5px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;font-weight:500;}
.topbar__link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--ink);font-size:16px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 频道行 */
.channelbar{height:var(--channel-h);border-top:1px solid var(--line);background:#fff;}
.channelbar__inner{display:flex;align-items:center;height:100%;}
.channelbar__scroll{
  display:flex;align-items:center;gap:8px;width:100%;
  overflow-x:auto;overflow-y:hidden;white-space:nowrap;
  scrollbar-width:thin;scrollbar-color:#D9D3E6 transparent;padding:6px 0;
}
.channelbar__scroll::-webkit-scrollbar{height:4px;}
.channelbar__scroll::-webkit-scrollbar-thumb{background:#D9D3E6;border-radius:999px;}
.channelbar__scroll::-webkit-scrollbar-track{background:transparent;}
.channel{
  display:inline-flex;align-items:center;gap:7px;flex:0 0 auto;
  padding:8px 17px;border-radius:var(--r-btn);font-size:14.5px;font-weight:600;
  color:#3B3452;background:#F3F1EE;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.channel:hover{background:rgba(106,53,232,.10);color:var(--brand);}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(106,53,232,.24);}
.channel.is-active:hover{background:#5a27d6;color:#fff;}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;inset:0;z-index:1000;background:rgba(21,17,41,.55);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;}
.mobile-drawer__panel{
  position:absolute;top:0;right:0;width:82%;max-width:340px;height:100%;
  background:#fff;padding:24px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
  box-shadow:-10px 0 30px rgba(21,17,41,.16);
}
.mobile-drawer.is-open .mobile-drawer__panel{transform:none;}
.mobile-drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.mobile-drawer__close{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink);}
.mobile-drawer__close:hover{border-color:var(--brand);color:var(--brand);}
.mobile-drawer__panel .channel{display:flex;width:100%;margin-bottom:8px;justify-content:flex-start;}
.mobile-drawer__panel .btn{width:100%;margin-top:14px;}

/* ============ 文章主体 ============ */
main{display:block;}
.article-head{
  background:var(--ink);position:relative;overflow:hidden;
  padding:52px 0 46px;color:#fff;
}
.article-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none;
}
.article-head::after{
  content:"";position:absolute;width:480px;height:480px;right:-140px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,53,232,.42) 0%,rgba(22,200,184,.16) 45%,transparent 70%);
  pointer-events:none;
}
.article-head .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#B9B3CC;margin-bottom:18px;}
.crumb a{color:#CFC9E2;}
.crumb a:hover{color:var(--brand-2);}
.crumb i{font-size:10px;color:#6F6890;}
.crumb .current{color:#8F89A8;}
.head-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--r-btn);font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:#0C6F66;background:rgba(22,200,184,.14);border:1px solid rgba(22,200,184,.42);
  margin-bottom:16px;
}
.article-head h1{
  color:#fff;font-size:42px;line-height:1.28;font-weight:700;letter-spacing:.01em;
  max-width:960px;margin:0 0 20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:#B9B3CC;}
.article-meta span{display:inline-flex;align-items:center;gap:7px;}
.article-meta i{color:var(--brand-2);font-size:13px;}

.article-body{padding:56px 0 80px;}
.article-layout{align-items:flex-start;}

.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:32px 34px;
}
.prose{max-width:820px;font-size:17px;line-height:1.9;color:var(--text);}
.prose > *:first-child{margin-top:0;}
.prose h2{font-size:30px;line-height:1.35;margin:1.7em 0 .7em;padding-left:14px;border-left:4px solid var(--brand);}
.prose h3{font-size:21px;line-height:1.5;margin:1.5em 0 .6em;color:#2C2544;}
.prose p{margin:0 0 1.4em;}
.prose ul,.prose ol{margin:0 0 1.4em;padding-left:1.4em;}
.prose li{margin-bottom:.55em;}
.prose ul li::marker{color:var(--brand);}
.prose ol li::marker{color:var(--brand);font-weight:700;}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--brand);
  background:#F7F5FF;border-radius:0 12px 12px 0;color:#3B3452;font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--r-img);margin:1.6em 0;border:1px solid var(--line);}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;}
.prose th,.prose td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top;}
.prose th{background:#F6F4F1;font-weight:700;color:#2C2544;}
.prose pre{
  background:#1D1836;color:#E9E5FF;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.8;margin:1.6em 0;
}
.prose code{background:#F1EEF9;color:#4A2FB0;padding:2px 6px;border-radius:6px;font-size:.92em;}
.prose pre code{background:transparent;color:inherit;padding:0;}
.prose a{color:var(--brand);border-bottom:1px solid rgba(106,53,232,.35);}
.prose a:hover{border-bottom-color:var(--brand);}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}

.empty-state{text-align:center;padding:36px 12px;}
.empty-state i{font-size:34px;color:#C7C0D8;margin-bottom:14px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--muted);margin-bottom:20px;}

/* 侧栏 */
.side-stack{display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);padding:22px 22px;transition:box-shadow .2s ease,transform .2s ease;
}
.side-card:hover{box-shadow:var(--sh-md);}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);font-size:14px;}
.side-list{list-style:none;margin:0;padding:0;}
.side-list li{padding:11px 0;border-bottom:1px dashed var(--line);}
.side-list li:last-child{border-bottom:0;padding-bottom:0;}
.side-list a{display:flex;gap:10px;font-size:14.5px;color:#3B3452;line-height:1.65;font-weight:500;}
.side-list a:hover{color:var(--brand);}
.side-list .num{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;margin-top:2px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11.5px;font-weight:700;color:#0C6F66;background:rgba(22,200,184,.16);
}
.side-cta{
  background:var(--ink);border-color:var(--ink);color:#fff;
  background-image:radial-gradient(circle at 90% 0%,rgba(106,53,232,.45) 0%,transparent 60%);
}
.side-cta h3{color:#fff;}
.side-cta h3 i{color:var(--accent);}
.side-cta p{color:#B9B3CC;font-size:14px;line-height:1.8;margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* 文末 */
.article-tail{margin-top:44px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px;}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-btn);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  color:#4A2FB0;background:rgba(106,53,232,.08);border:1px solid rgba(106,53,232,.24);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tag:hover{background:rgba(106,53,232,.16);color:#3B2490;border-color:rgba(106,53,232,.4);}

.tail-title{font-size:24px;margin-bottom:8px;}
.tail-desc{color:var(--muted);font-size:14.5px;margin-bottom:24px;}

.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px;}
.rec-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#D8D0EC;}
.rec-card .thumb{aspect-ratio:16/9;overflow:hidden;background:rgba(106,53,232,.04);}
.rec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rec-card:hover .thumb img{transform:scale(1.03);}
.rec-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.rec-card h3{font-size:17px;line-height:1.55;font-weight:600;margin-bottom:10px;color:var(--ink);}
.rec-card p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-card .meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:32px;}
.pn-item{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;border:1px solid var(--line);
  border-radius:var(--r-card);background:#fff;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.pn-item:hover{border-color:rgba(106,53,232,.4);box-shadow:var(--sh-md);transform:translateY(-2px);}
.pn-item span{font-size:12.5px;color:var(--muted);letter-spacing:.06em;}
.pn-item strong{font-size:15.5px;color:var(--ink);font-weight:600;line-height:1.6;}
.pn-item i{color:var(--brand);font-size:13px;}

.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ============ 底部 CTA ============ */
.tail-cta{
  background:var(--ink);color:#fff;padding:64px 0;position:relative;overflow:hidden;
}
.tail-cta::after{
  content:"";position:absolute;width:520px;height:520px;left:-160px;bottom:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(22,200,184,.22) 0%,transparent 68%);
}
.tail-cta .container{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:24px;justify-content:space-between;}
.tail-cta h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:10px;}
.tail-cta p{color:#B9B3CC;font-size:15px;margin:0;max-width:640px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#B9B3CC;padding:64px 0 0;font-size:14.5px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.site-footer a{display:block;color:#B9B3CC;margin-bottom:10px;font-size:14.5px;}
.site-footer a:hover{color:var(--brand-2);}
.site-footer p{color:#B9B3CC;line-height:1.85;margin-bottom:12px;font-size:14.5px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 110px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:#8F89A8;
}

/* ============ 底部固定转化条 ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:950;
  display:flex;align-items:center;gap:16px;
  background:var(--ink);color:#fff;border-radius:16px;
  padding:14px 16px 14px 22px;max-width:520px;
  box-shadow:0 18px 40px rgba(21,17,41,.28);
  transform:translateY(160%);opacity:0;visibility:hidden;
  transition:transform .32s ease,opacity .32s ease,visibility .32s ease;
}
.float-cta.is-visible{transform:none;opacity:1;visibility:visible;}
.float-cta p{margin:0;font-size:14.5px;line-height:1.6;color:#E4E0F2;}
.float-cta p strong{color:#fff;}
.float-cta .btn{flex:0 0 auto;height:44px;padding:0 22px;font-size:14.5px;}
.float-cta__close{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#B9B3CC;cursor:pointer;font-size:13px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;
}
.float-cta__close:hover{color:#fff;border-color:rgba(255,255,255,.5);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .search-box{max-width:260px;}
  .topbar__link{display:none;}
  .article-head h1{font-size:34px;}
  .rec-grid{grid-template-columns:repeat(2,1fr);}
  .prose{max-width:100%;}
}
@media screen and (max-width:639px){
  html{scroll-padding-top:118px;}
  :root{--topbar-h:56px;--channel-h:50px;}
  .container{padding:0 17px;}
  .brand__text{font-size:15.5px;}
  .brand__mark{width:32px;height:32px;font-size:12px;}
  .search-box{display:none;}
  .topbar__actions{gap:10px;}
  .topbar__actions .btn--primary{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-head{padding:34px 0 32px;}
  .article-head h1{font-size:27px;line-height:1.34;}
  .article-meta{font-size:13px;gap:8px 16px;}
  .article-body{padding:34px 0 60px;}
  .panel{padding:22px 18px;}
  .prose{font-size:16.5px;}
  .prose h2{font-size:23px;}
  .prose h3{font-size:19px;}
  .prose table{display:block;overflow-x:auto;white-space:nowrap;}
  .rec-grid{grid-template-columns:1fr;}
  .prevnext{grid-template-columns:1fr;}
  .tail-cta{padding:48px 0;}
  .tail-cta h2{font-size:23px;}
  .tail-cta .container{flex-direction:column;align-items:flex-start;}
  .float-cta{
    right:0;left:0;bottom:0;border-radius:0;max-width:100%;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    gap:10px;
  }
  .float-cta p{font-size:13.5px;}
  .float-cta .btn{height:42px;padding:0 18px;font-size:14px;}
  .footer-bottom{padding-bottom:130px;flex-direction:column;}
  .site-footer{padding-top:48px;}
}

/* roulang page: category1 */
:root{
  --ink:#151129;
  --ink-2:#1E1938;
  --brand:#6A35E8;
  --brand-soft:#F0EAFF;
  --brand-2:#16C8B8;
  --brand-2-soft:#E6FAF7;
  --accent:#FF8A3D;
  --accent-dark:#E9762A;
  --paper:#F6F4F1;
  --card:#FFFFFF;
  --line:#E7E2DC;
  --text:#241F35;
  --muted:#6B6580;
  --ok:#1FA97A;
  --warn:#E0A020;
  --err:#D9453F;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(21,17,41,.06);
  --sh-md:0 8px 24px rgba(21,17,41,.08);
  --sh-lg:0 16px 40px rgba(21,17,41,.12);
  --font:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:136px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--accent-dark);}
button{font-family:inherit;}
h1,h2,h3,h4{font-family:var(--font);color:var(--text);margin:0;font-weight:700;}
h1{font-size:42px;line-height:1.25;letter-spacing:.01em;}
h2{font-size:32px;line-height:1.35;letter-spacing:.01em;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:92px 0;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head .eyebrow{margin-bottom:14px;}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;margin:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);
  border-radius:var(--r-pill);padding:6px 14px;
}
.eyebrow--teal{color:#0E8F83;background:var(--brand-2-soft);}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:70;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-sm);}
.topbar{height:64px;display:flex;align-items:center;}
.topbar__inner{display:flex;align-items:center;gap:22px;width:100%;position:relative;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand__mark{
  width:36px;height:36px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.brand__text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.brand__text span{color:var(--brand);}
.topbar__search{position:relative;flex:1 1 auto;max-width:400px;}
.topbar__search i{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;pointer-events:none;}
.topbar__search input{
  width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:#FCFBFA;padding:0 18px 0 40px;font-size:14.5px;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.topbar__search input::placeholder{color:#9C97AC;}
.topbar__search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(106,53,232,.14);}
.topbar__actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.topbar__link{font-size:14.5px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;}
.topbar__link:hover{color:var(--brand);}
.icon-btn{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--text);place-items:center;cursor:pointer;font-size:15px;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:#2A1405;box-shadow:0 6px 18px rgba(255,138,61,.28);}
.btn--primary:hover{background:#FF9C5C;color:#2A1405;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,138,61,.34);}
.btn--ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn--ghost:hover{background:var(--brand-soft);color:var(--brand);}
.btn--light{background:#fff;color:var(--brand);}
.btn--light:hover{background:#F0EAFF;color:var(--brand);transform:translateY(-1px);}
.btn--sm{height:42px;padding:0 18px;font-size:14.5px;}
.topbar .btn{height:44px;padding:0 22px;font-size:15px;}

.channelbar{border-top:1px solid var(--line);background:#fff;}
.channelbar__scroll{
  display:flex;gap:8px;align-items:center;
  overflow-x:auto;padding:9px 0;
  scrollbar-width:thin;scrollbar-color:#D6D0E4 transparent;
}
.channelbar__scroll::-webkit-scrollbar{height:4px;}
.channelbar__scroll::-webkit-scrollbar-thumb{background:#D6D0E4;border-radius:99px;}
.channel{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:9px 17px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text);background:var(--paper);
  border:1px solid transparent;white-space:nowrap;
}
.channel i{font-size:13px;opacity:.8;}
.channel:hover{background:var(--brand-soft);color:var(--brand);}
.channel.is-active{background:var(--brand);color:#fff;}
.channel.is-active i{opacity:1;}

.mobile-drawer{display:none;}
.mobile-drawer.is-open{display:block;}
.mobile-drawer__panel{
  border-top:1px solid var(--line);background:#fff;padding:14px 0 20px;
}
.mobile-drawer__panel a{
  display:block;padding:11px 0;font-size:15.5px;color:var(--text);border-bottom:1px dashed var(--line);
}
.mobile-drawer__panel a:last-child{border-bottom:0;}
.mobile-drawer__panel a:hover{color:var(--brand);padding-left:6px;}

/* ---------- 窄版 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink);
  color:#fff;
  padding:72px 0 64px;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.28;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(640px 320px at 12% 0%,rgba(106,53,232,.5),transparent 62%),
    radial-gradient(520px 300px at 96% 100%,rgba(22,200,184,.32),transparent 66%),
    linear-gradient(180deg,rgba(21,17,41,.62),rgba(21,17,41,.9));
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#A9A3C0;margin-bottom:22px;flex-wrap:wrap;}
.crumbs a{color:#CFC9E4;}
.crumbs a:hover{color:var(--brand-2);}
.crumbs i{font-size:10px;opacity:.7;}
.page-hero h1{color:#fff;font-size:44px;margin-bottom:18px;}
.page-hero__lead{max-width:760px;color:#C6C1DA;font-size:17px;line-height:1.95;margin:0 0 30px;}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;}
.hero-pills a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  font-size:14px;color:#E6E2F5;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
}
.hero-pills a:hover{background:var(--brand);border-color:var(--brand);color:#fff;}
.hero-pills a i{font-size:11px;color:var(--brand-2);}
.hero-pills a:hover i{color:#fff;}

/* ---------- 目录 + 正文两栏 ---------- */
.layout{padding:80px 0 96px;}
.toc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-sm);position:sticky;top:140px;
}
.toc-card__title{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:16px;}
.toc-list li + li{margin-top:4px;}
.toc-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:9px 10px;border-radius:var(--r-sm);font-size:14.5px;color:var(--text);
  border-left:3px solid transparent;line-height:1.6;
}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.toc-list a span{font-family:var(--mono);font-size:12px;color:var(--brand-2);padding-top:2px;}
.toc-card .btn{width:100%;margin-top:18px;}

.content-block{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:38px 40px;box-shadow:var(--sh-sm);}
.content-section{padding-bottom:44px;margin-bottom:44px;border-bottom:1px dashed var(--line);scroll-margin-top:140px;}
.content-section:last-child{padding-bottom:0;margin-bottom:0;border-bottom:0;}
.content-section h2{font-size:29px;margin-bottom:16px;}
.content-section > p{color:#3B3554;font-size:16.5px;max-width:66ch;}

.entry-list{margin-top:26px;display:grid;gap:14px;}
.entry{
  position:relative;display:flex;gap:18px;
  background:#FCFBF9;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px 24px 22px 26px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.entry::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;
  background:var(--brand);border-radius:0 3px 3px 0;
  opacity:0;transition:opacity .2s ease;
}
.entry:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#DCD5EE;background:#fff;}
.entry:hover::before{opacity:1;}
.entry__no{
  flex:0 0 auto;width:38px;height:38px;border-radius:var(--r-sm);
  background:linear-gradient(135deg,rgba(106,53,232,.16),rgba(22,200,184,.16));
  color:var(--brand);font-family:var(--mono);font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
.entry__body{min-width:0;flex:1 1 auto;}
.entry__body h3{margin-bottom:8px;}
.entry__body p{
  margin:0;font-size:15px;line-height:1.85;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry__meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:#8C86A0;}
.entry__meta i.fa-arrow-right{color:var(--brand);font-size:12px;margin-left:auto;transition:transform .2s ease;}
.entry:hover .entry__meta i.fa-arrow-right{transform:translateX(4px);}
.pill{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.05em;
  color:#0E8F83;background:var(--brand-2-soft);border:1px solid rgba(22,200,184,.4);
}
.pill--violet{color:var(--brand);background:var(--brand-soft);border-color:rgba(106,53,232,.35);}
.pill--warn{color:#96650B;background:#FDF4E1;border-color:rgba(224,160,32,.4);}
.dot{width:4px;height:4px;border-radius:50%;background:#C9C3D8;}

.figure{border-radius:var(--r-lg);overflow:hidden;border:2px solid #fff;box-shadow:var(--sh-md);margin:26px 0;}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--paper);}
.figure figcaption{font-size:13px;color:var(--muted);padding:12px 16px;background:#FCFBF9;border-top:1px solid var(--line);}

.check-list{margin-top:22px;display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#FCFBF9;border:1px solid var(--line);border-left:3px solid var(--brand-2);
  border-radius:var(--r-sm);padding:14px 18px;font-size:15px;line-height:1.8;color:#3B3554;
}
.check-list i{color:var(--brand-2);margin-top:6px;font-size:14px;}

/* ---------- 数据条 ---------- */
.stat-strip{
  background:var(--ink);border-radius:var(--r-lg);
  padding:38px 32px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  position:relative;overflow:hidden;
}
.stat-strip::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(420px 220px at 88% 0%,rgba(106,53,232,.4),transparent 66%);
  pointer-events:none;
}
.stat{position:relative;z-index:2;}
.stat__num{font-family:var(--mono);font-size:34px;font-weight:700;color:#fff;line-height:1.2;}
.stat__num em{font-style:normal;font-size:16px;color:var(--brand-2);margin-left:4px;}
.stat__label{font-size:13.5px;color:#A9A3C0;margin-top:6px;}

/* ---------- 底部转化 ---------- */
.cta-block{
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
  padding:76px 0;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(560px 300px at 14% 10%,rgba(106,53,232,.45),transparent 64%),
    radial-gradient(460px 260px at 92% 90%,rgba(22,200,184,.28),transparent 66%);
}
.cta-block .container{position:relative;z-index:2;text-align:center;}
.cta-block h2{color:#fff;font-size:32px;margin-bottom:16px;}
.cta-block p{color:#C6C1DA;max-width:640px;margin:0 auto 30px;font-size:16.5px;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.cta-note{margin-top:22px;font-size:13.5px;color:#8E88A6;}

/* ---------- 固定转化条 ---------- */
.sticky-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  width:340px;background:var(--ink);color:#fff;
  border-radius:var(--r-md);box-shadow:var(--sh-lg);
  padding:18px 18px 20px;
  transform:translateY(24px);opacity:0;visibility:hidden;
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease;
  border:1px solid rgba(255,255,255,.1);
}
.sticky-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.sticky-cta__title{font-size:14.5px;line-height:1.7;color:#E6E2F5;margin:0 0 14px;padding-right:26px;}
.sticky-cta .btn{width:100%;height:46px;font-size:15px;}
.sticky-cta__close{
  position:absolute;top:10px;right:10px;width:28px;height:28px;border-radius:50%;
  border:1px solid rgba(255,255,255,.2);background:transparent;color:#B9B3CC;
  display:grid;place-items:center;cursor:pointer;font-size:12px;
}
.sticky-cta__close:hover{color:#fff;border-color:var(--brand-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B3CC;padding:72px 0 0;font-size:14.5px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.site-footer a{display:block;color:#B9B3CC;padding:5px 0;font-size:14.5px;}
.site-footer a:hover{color:var(--brand-2);}
.site-footer p{color:#B9B3CC;line-height:1.9;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;font-size:17px;}
.site-footer .grid-margin-y{margin-top:-8px;}
.site-footer .cell{padding-top:8px;padding-bottom:8px;}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 26px;display:flex;justify-content:space-between;gap:14px;
  flex-wrap:wrap;font-size:13.5px;color:#8E88A6;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  h1{font-size:34px;}
  .page-hero h1{font-size:34px;}
  .content-section h2{font-size:26px;}
  .content-block{padding:30px 28px;}
  .toc-card{position:static;margin-bottom:28px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);padding:32px 26px;}
  .section{padding:72px 0;}
  .layout{padding:64px 0 80px;}
}
@media screen and (max-width:639px){
  body{font-size:15.5px;}
  .container{padding:0 17px;}
  h1{font-size:29px;}
  h2{font-size:23px;}
  .page-hero{padding:52px 0 46px;}
  .page-hero h1{font-size:29px;}
  .page-hero__lead{font-size:15.5px;}
  .topbar{height:56px;}
  .topbar__inner{gap:12px;}
  .brand__text{font-size:16px;}
  .topbar__search{display:none;}
  .topbar__link{display:none;}
  .icon-btn{display:grid;}
  .topbar .btn{height:40px;padding:0 16px;font-size:14px;}
  .topbar.search-open .topbar__search{
    display:block;position:absolute;left:0;right:0;top:calc(100% + 10px);
    max-width:none;z-index:5;background:#fff;padding:0;border-radius:var(--r-pill);
    box-shadow:var(--sh-md);
  }
  .section{padding:56px 0;}
  .content-block{padding:24px 18px;border-radius:var(--r-md);}
  .content-section{padding-bottom:34px;margin-bottom:34px;}
  .content-section h2{font-size:22px;}
  .content-section > p{font-size:15.5px;}
  .entry{flex-direction:column;gap:12px;padding:20px 18px;}
  .entry__no{width:34px;height:34px;font-size:13px;}
  .stat-strip{grid-template-columns:1fr 1fr;gap:20px;padding:26px 20px;border-radius:var(--r-md);}
  .stat__num{font-size:26px;}
  .cta-block{padding:60px 0;}
  .cta-block h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .sticky-cta{
    left:0;right:0;bottom:0;width:auto;border-radius:14px 14px 0 0;
    padding:14px 16px calc(16px + env(safe-area-inset-bottom));
  }
  .sticky-cta__title{font-size:13.5px;margin-bottom:10px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .site-footer{padding:56px 0 0;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink:#151129;
  --brand:#6A35E8;
  --brand-2:#16C8B8;
  --accent:#FF8A3D;
  --paper:#F6F4F1;
  --card:#FFFFFF;
  --line:#E7E2DC;
  --text:#241F35;
  --muted:#6B6580;
  --ok:#1FA97A;
  --warn:#E0A020;
  --err:#D9453F;
  --r-card:14px;
  --r-img:16px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(21,17,41,.06);
  --sh-md:0 8px 24px rgba(21,17,41,.08);
  --sh-lg:0 14px 34px rgba(21,17,41,.12);
  --maxw:1200px;
  --topbar-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:136px;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand);}
button,input{font-family:inherit;font-size:inherit;}
button{cursor:pointer;}
ul,ol{margin:0;padding:0;}
h1,h2,h3,h4{font-weight:700;color:var(--text);margin:0;letter-spacing:0;line-height:1.35;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
[id]{scroll-margin-top:136px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:96px 0;}
.section--alt{background:#fff;}
.section--tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;line-height:1.4;letter-spacing:.08em;
  color:var(--brand);font-weight:600;margin:0 0 14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-2);border-radius:2px;}
.eyebrow--light{color:#C9C4DC;}
.section-head{max-width:720px;margin:0 auto 48px;text-align:center;}
.section-head h2{font-size:32px;line-height:1.35;}
.section-head__sub{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9;}

/* ============ 顶部双层导航 ============ */
.site-header{position:sticky;top:0;z-index:80;}
.topbar{background:#fff;border-bottom:1px solid var(--line);}
.topbar__inner{
  display:flex;align-items:center;gap:18px;height:var(--topbar-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;
}
.brand__text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;}
.brand__text span{color:var(--brand);}
.search{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
  height:44px;background:#FAF9F7;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:0 16px;transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search i{color:var(--muted);font-size:14px;margin-right:10px;}
.search input{
  flex:1 1 auto;height:100%;border:0;background:transparent;outline:none;
  font-size:14.5px;color:var(--text);
}
.search input::placeholder{color:#9C96AC;}
.search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(106,53,232,.14);}
.topbar__actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto;}
.link-quiet{font-size:14px;color:var(--muted);padding:6px 2px;border-bottom:1px solid transparent;}
.link-quiet:hover{color:var(--brand);border-bottom-color:var(--brand);}
.hamburger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--text);
}
.hamburger:hover{background:#F1ECFE;border-color:#D8CCFA;color:var(--brand);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-pill);
  border:1px solid transparent;font-size:15px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn i{font-size:14px;}
.btn--primary{background:var(--accent);color:#2A1708;box-shadow:0 6px 16px rgba(255,138,61,.28);}
.btn--primary:hover{filter:brightness(1.06);transform:translateY(-1px);color:#2A1708;}
.btn--primary:active{transform:translateY(0);filter:brightness(.97);}
.btn--ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn--ghost:hover{background:#F1ECFE;color:var(--brand);}
.btn--ghost-light{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;}
.btn--ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn--sm{height:42px;padding:0 20px;font-size:14px;}

.channelbar{background:#fff;border-bottom:1px solid var(--line);}
.channelbar__scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:10px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channelbar__scroll::-webkit-scrollbar{height:0;display:none;}
.channel{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text);background:#F1EEF9;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.channel:hover{background:#E9E1FD;color:var(--brand);}
.channel.is-active{background:var(--brand);color:#fff;box-shadow:0 6px 14px rgba(106,53,232,.24);}
.channel.is-active:hover{background:var(--brand);color:#fff;}
.channel i{font-size:12px;}

.drawer{
  background:#fff;border-bottom:1px solid var(--line);
  padding:16px 0 20px;box-shadow:var(--sh-md);
}
.drawer[hidden]{display:none;}
.drawer__links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ============ 分类页 Hero ============ */
.cat-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.cat-hero__bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(21,17,41,.86),rgba(21,17,41,.94)),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 1px,transparent 1px 56px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 56px),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,auto,auto,cover;
  background-position:center;
  opacity:.95;
}
.cat-hero__inner{position:relative;padding:96px 0 92px;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:#9E98B8;margin-bottom:20px;}
.crumbs a{color:#C9C4DC;}
.crumbs a:hover{color:var(--brand-2);}
.cat-hero h1{font-size:44px;line-height:1.25;color:#fff;margin-bottom:16px;}
.cat-hero__lead{font-size:17px;line-height:1.9;color:#C4BFD8;max-width:38ch;}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.cat-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(106,53,232,.18);color:#D9CFFB;border:1px solid rgba(106,53,232,.4);
}
.tag-pill--cyan{background:rgba(22,200,184,.16);color:#9BF0E6;border-color:rgba(22,200,184,.38);}
.cat-hero__figure{margin:0;}
.cat-hero__figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:2px solid rgba(255,255,255,.16);
  box-shadow:0 0 0 6px rgba(106,53,232,.18),var(--sh-lg);
}

/* ============ 概览条目 ============ */
.overview{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.overview__item{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-sm);
  transition:transform .24s ease,box-shadow .24s ease;
}
.overview__item:hover{transform:translateY(-3px);box-shadow:inset 3px 0 0 var(--brand),var(--sh-md);color:var(--text);}
.overview__num{
  display:inline-block;font-size:12px;letter-spacing:.08em;font-weight:700;
  color:var(--brand);background:linear-gradient(135deg,rgba(106,53,232,.16),rgba(22,200,184,.16));
  padding:4px 10px;border-radius:8px;margin-bottom:14px;
}
.overview__item h3{font-size:19px;margin-bottom:8px;}
.overview__item p{font-size:14.5px;color:var(--muted);line-height:1.85;}

/* ============ Zigzag 场景 ============ */
.zig{
  display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
}
.zig--rev .zig__media{order:-1;}
.zig + .zig{margin-top:88px;}
.zig__num{
  width:54px;height:54px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(106,53,232,.18),rgba(22,200,184,.2));
  color:var(--brand);font-weight:700;font-size:20px;letter-spacing:.02em;
  margin-bottom:18px;
}
.zig__body h2{font-size:31px;line-height:1.35;margin-bottom:14px;}
.zig__body p{font-size:16.5px;line-height:1.9;color:var(--muted);margin-bottom:14px;max-width:40ch;}
.checklist{display:grid;gap:10px;margin-top:22px;}
.checklist li{display:flex;gap:10px;font-size:15px;line-height:1.8;color:var(--text);}
.checklist i{color:var(--brand-2);font-size:13px;margin-top:7px;flex:0 0 auto;}
.zig__media{margin:0;}
.zig__media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-md);background:rgba(106,53,232,.06);
}

/* ============ 中部 CTA ============ */
.midcta{padding:0 0 96px;}
.midcta__box{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(106,53,232,.1),rgba(22,200,184,.1));
  border:1px solid #DCD3F6;border-radius:18px;padding:36px 40px;
}
.midcta__box h3{font-size:23px;margin-bottom:8px;}
.midcta__box p{color:var(--muted);font-size:15px;line-height:1.85;max-width:52ch;}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .22s ease,border-color .22s ease;
}
.faq-item:hover{box-shadow:var(--sh-sm);}
.faq-item.open{border-color:#D8CCFA;box-shadow:var(--sh-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;text-align:left;padding:20px 24px;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-q i{color:var(--brand);font-size:15px;transition:transform .25s ease;flex:0 0 auto;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a__inner{padding:0 24px 22px;}
.faq-a p{
  font-size:15.5px;line-height:1.9;color:var(--muted);
  border-left:3px solid var(--brand);padding-left:16px;
}

/* ============ 底部 CTA ============ */
.cta-block{position:relative;background:var(--ink);color:#fff;overflow:hidden;}
.cta-block__bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(120deg,rgba(21,17,41,.92),rgba(21,17,41,.78)),
    url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.95;
}
.cta-block__inner{position:relative;padding:88px 0;text-align:center;max-width:720px;margin:0 auto;}
.cta-block h2{font-size:34px;color:#fff;line-height:1.35;margin-bottom:16px;}
.cta-block p.txt{color:#C4BFD8;font-size:16px;line-height:1.9;margin-bottom:28px;}
.cta-block__note{margin-top:22px;font-size:13.5px;color:#8E88A8;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#B9B3CC;padding:72px 0 28px;font-size:14px;line-height:1.85;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 14px;}
.site-footer a{display:block;color:#B9B3CC;padding:5px 0;}
.site-footer a:hover{color:var(--brand-2);}
.site-footer p{margin:0;font-size:14px;line-height:1.9;color:#B9B3CC;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;font-size:17px;}
.footer-brand .brand__text span{color:var(--brand-2);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:48px;padding-top:20px;font-size:13px;color:#8E88A8;
}

/* ============ 底部固定转化条 ============ */
.floatcta{
  position:fixed;right:24px;bottom:24px;width:370px;z-index:90;
  display:flex;align-items:center;gap:14px;
  background:var(--ink);color:#fff;border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh-lg);
  opacity:0;transform:translateY(18px);pointer-events:none;
  transition:opacity .28s ease,transform .28s ease;
}
.floatcta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.floatcta__text{font-size:14px;line-height:1.7;color:#D6D1E4;flex:1 1 auto;}
.floatcta__text b{display:block;color:#fff;font-size:15px;margin-bottom:2px;font-weight:600;}
.floatcta__close{
  background:transparent;border:0;color:#8E88A8;font-size:14px;
  width:28px;height:28px;border-radius:8px;flex:0 0 auto;
}
.floatcta__close:hover{background:rgba(255,255,255,.1);color:#fff;}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .section{padding:76px 0;}
  .section--tight{padding:56px 0;}
  .cat-hero__inner{padding:76px 0 68px;}
  .cat-hero h1{font-size:36px;}
  .overview{grid-template-columns:repeat(2,1fr);}
  .zig{grid-template-columns:1fr;gap:30px;}
  .zig--rev .zig__media{order:0;}
  .zig + .zig{margin-top:56px;}
  .zig__body h2{font-size:27px;}
  .zig__body p{max-width:none;}
  .midcta{padding-bottom:76px;}
  .cta-block__inner{padding:72px 0;}
  .cta-block h2{font-size:28px;}
  .topbar__inner{gap:14px;}
  .search{max-width:280px;}
  .link-quiet{display:none;}
}
@media screen and (max-width:639px){
  :root{--topbar-h:56px;}
  .container{padding-left:16px;padding-right:16px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:25px;}
  .cat-hero__inner{padding:56px 0 52px;}
  .cat-hero h1{font-size:29px;}
  .cat-hero__lead{font-size:15.5px;}
  .cat-hero__figure img{aspect-ratio:16/10;}
  .overview{grid-template-columns:1fr;gap:14px;}
  .zig__body h2{font-size:23px;}
  .zig__body p{font-size:15.5px;}
  .zig__num{width:46px;height:46px;font-size:17px;}
  .midcta__box{padding:26px 22px;}
  .midcta__box h3{font-size:20px;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a__inner{padding:0 18px 20px;}
  .cta-block__inner{padding:56px 0;}
  .cta-block h2{font-size:23px;}
  .btn{height:48px;padding:0 22px;}
  .topbar__inner{gap:10px;}
  .brand__text{font-size:15.5px;}
  .search{display:none;}
  .hamburger{display:inline-flex;align-items:center;justify-content:center;}
  .site-footer{padding:56px 0 24px;}
  .floatcta{
    left:0;right:0;bottom:0;width:auto;border-radius:16px 16px 0 0;
    padding:14px 16px calc(14px + env(safe-area-inset-bottom));
  }
}

/* roulang page: category3 */
:root{
  --ink:#151129;
  --brand:#6A35E8;
  --brand-2:#16C8B8;
  --accent:#FF8A3D;
  --paper:#F6F4F1;
  --card:#FFFFFF;
  --line:#E7E2DC;
  --text:#241F35;
  --muted:#6B6580;
  --ok:#1FA97A;
  --warn:#E0A020;
  --err:#D9453F;
  --radius:14px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(21,17,41,.06);
  --shadow-md:0 8px 24px rgba(21,17,41,.08);
  --shadow-hover:0 12px 30px rgba(21,17,41,.12);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:144px;}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Source Han Sans SC','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section--paper{background:var(--paper);}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:32px;line-height:1.35;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--brand);background:rgba(106,53,232,.10);
  border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.eyebrow i{font-size:11px;}
section[id]{scroll-margin-top:144px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent);color:#2C1608;box-shadow:0 6px 18px rgba(255,138,61,.28);}
.btn-primary:hover{transform:translateY(-1px);background:#FF9A57;color:#2C1608;box-shadow:0 10px 22px rgba(255,138,61,.34);}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:rgba(106,53,232,.08);color:var(--brand);transform:translateY(-1px);}
.btn-ink{background:#fff;color:var(--ink);}
.btn-ink:hover{background:#EDE9FB;color:var(--ink);transform:translateY(-1px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.topbar{position:relative;border-bottom:1px solid var(--line);}
.topbar__inner{
  display:flex;align-items:center;gap:18px;height:64px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;
  display:inline-flex;align-items:center;justify-content:center;
}
.brand__text{font-size:18px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand__text span{color:var(--brand);}
.search{position:relative;flex:1 1 auto;max-width:400px;}
.search input{
  width:100%;height:44px;padding:0 46px 0 20px;
  border:1px solid var(--line);border-radius:999px;
  background:#FBFAF8;font-size:14px;color:var(--text);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.search input::placeholder{color:#A29CB8;}
.search input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(106,53,232,.14);}
.search button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:36px;height:36px;border:0;border-radius:50%;
  background:transparent;color:var(--muted);cursor:pointer;
  transition:color .2s,background .2s;
}
.search button:hover{color:var(--brand);background:rgba(106,53,232,.08);}
.topbar__actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex:0 0 auto;}
.topbar__link{font-size:14px;color:var(--muted);display:inline-flex;align-items:center;gap:7px;transition:color .2s;}
.topbar__link:hover{color:var(--brand);}
.icon-btn{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:rgba(106,53,232,.06);}
.channelbar{background:#fff;}
.channelbar__scroll{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;padding:10px 0;
  scrollbar-width:thin;
}
.channelbar__scroll::-webkit-scrollbar{height:4px;}
.channelbar__scroll::-webkit-scrollbar-thumb{background:#DCD6E8;border-radius:4px;}
.channel{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 18px;border-radius:999px;font-size:14px;
  color:#3A3350;background:#F1EEF9;
  transition:background .2s,color .2s;
}
.channel:hover{background:rgba(106,53,232,.12);color:var(--brand);}
.channel.is-active{background:var(--brand);color:#fff;}
.channel.is-active:hover{background:#5A28D6;color:#fff;}
.channel i{font-size:12px;}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:#fff;z-index:90;padding:24px 22px;
  transform:translateX(102%);transition:transform .28s ease;
  box-shadow:-12px 0 40px rgba(21,17,41,.16);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer__title{font-size:16px;font-weight:700;color:var(--ink);}
.drawer__close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;}
.drawer__close:hover{border-color:var(--brand);color:var(--brand);}
.drawer a.drawer__link{
  display:flex;align-items:center;gap:10px;
  padding:13px 14px;border-radius:12px;font-size:15px;color:#3A3350;
  transition:background .2s,color .2s;
}
.drawer a.drawer__link:hover{background:#F2EFFB;color:var(--brand);}
.drawer a.drawer__link.is-active{background:var(--brand);color:#fff;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(21,17,41,.45);
  opacity:0;pointer-events:none;transition:opacity .28s;z-index:85;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#B9B3CC;margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:#D6D0EC;}
.crumb a:hover{color:var(--brand-2);}
.crumb span.sep{color:#5A527A;}
.crumb__cur{color:#fff;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(120deg,rgba(21,17,41,.94) 0%,rgba(21,17,41,.86) 45%,rgba(45,25,95,.80) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#fff;padding:64px 0 76px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 78% 22%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 78% 22%,#000 0%,transparent 72%);
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero h1{
  color:#fff;font-size:44px;line-height:1.25;font-weight:700;
  max-width:880px;margin-bottom:20px;
}
.pill{
  display:inline-block;font-size:12px;letter-spacing:.08em;font-weight:600;
  padding:6px 14px;border-radius:999px;line-height:1.4;
}
.pill--soft{background:rgba(106,53,232,.22);color:#CFC0FF;border:1px solid rgba(160,128,255,.35);margin-bottom:18px;}
.cat-hero__lead{max-width:760px;font-size:16.5px;line-height:1.95;color:#CDC7E2;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:26px;
  font-size:14px;color:#B9B3CC;
}
.hero-meta li{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--brand-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}

/* ---------- 对照表 ---------- */
.compare-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.compare-table{width:100%;border-collapse:collapse;}
.compare-table caption{
  caption-side:top;text-align:left;padding:20px 22px 0;
  font-size:14px;color:var(--muted);
}
.compare-table th{
  text-align:left;font-size:13px;letter-spacing:.06em;font-weight:600;
  color:var(--muted);background:#F4F1FB;
  padding:16px 22px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.compare-table td{
  padding:20px 22px;font-size:15px;line-height:1.85;color:var(--text);
  border-bottom:1px solid var(--line);vertical-align:top;
}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr{transition:background .2s;}
.compare-table tbody tr:hover{background:#FBF9FE;}
.t-name{font-weight:600;color:var(--ink);display:block;margin-bottom:4px;}
.t-sub{font-size:13px;color:var(--muted);}
.tag{
  display:inline-block;font-size:12px;line-height:1.4;font-weight:600;
  padding:4px 12px;border-radius:999px;
  background:rgba(22,200,184,.10);color:#0E8C81;border:1px solid rgba(22,200,184,.4);
}
.tag--violet{background:rgba(106,53,232,.08);color:var(--brand);border-color:rgba(106,53,232,.32);}
.tag--orange{background:rgba(255,138,61,.12);color:#B85A16;border-color:rgba(255,138,61,.42);}
.tag--gray{background:#F1EEF9;color:#5B5477;border-color:#E1DBEE;}
.compare-note{
  margin-top:22px;display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:18px 22px;font-size:14.5px;color:var(--muted);
}
.compare-note i{color:var(--brand-2);margin-top:6px;}

/* ---------- 时间线 ---------- */
.flow{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;
}
.flow__item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px 28px;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.flow__item::after{
  content:"";position:absolute;top:52px;right:-14px;width:14px;height:1px;
  background:var(--line);
}
.flow__item:last-child::after{display:none;}
.flow__item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(106,53,232,.35);}
.flow__num{
  width:46px;height:46px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--brand);
  background:linear-gradient(135deg,rgba(106,53,232,.16),rgba(22,200,184,.16));
  margin-bottom:18px;
}
.flow__item h3{font-size:20px;line-height:1.5;margin-bottom:10px;}
.flow__item p{font-size:15px;color:var(--muted);line-height:1.9;}
.flow__hint{margin-top:10px;font-size:13px;color:var(--brand-2);font-weight:600;letter-spacing:.02em;}

/* ---------- 图文板块 ---------- */
.split{padding-top:8px;}
.media-frame{
  margin:0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-md);
  background:#EFEBF7;
}
.media-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s ease;}
.media-frame:hover img{transform:scale(1.03);}
.split__text h2{font-size:30px;line-height:1.35;margin-bottom:16px;}
.split__text p{font-size:16px;color:#403A57;line-height:1.95;}
.dot-list{margin-top:24px;}
.dot-list li{
  position:relative;padding-left:26px;margin-bottom:14px;
  font-size:15.5px;line-height:1.85;color:var(--text);
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:9px;height:9px;border-radius:3px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.dot-list li strong{color:var(--ink);font-weight:600;}

/* ---------- FAQ ---------- */
.faq__item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:14px;overflow:hidden;transition:border-color .22s,box-shadow .22s;
}
.faq__item:hover{border-color:rgba(106,53,232,.3);box-shadow:var(--shadow-sm);}
.faq__item.is-open{border-color:rgba(106,53,232,.45);box-shadow:var(--shadow-md);}
.faq__q{
  position:relative;width:100%;text-align:left;
  background:none;border:0;cursor:pointer;
  padding:22px 60px 22px 24px;
  font-family:inherit;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color .2s;
}
.faq__q:hover{color:var(--brand);}
.faq__q::after{
  content:"+";position:absolute;right:24px;top:50%;
  transform:translateY(-50%);
  font-size:24px;font-weight:400;color:var(--brand);
  transition:transform .25s ease,color .25s ease;line-height:1;
}
.faq__item.is-open .faq__q::after{transform:translateY(-50%) rotate(45deg);color:var(--accent);}
.faq__a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
.faq__a-inner{
  margin:0 24px 24px;padding:4px 0 4px 18px;
  border-left:3px solid var(--brand);
  font-size:15.5px;line-height:1.9;color:#4A4460;
}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#151129 0%,#241a45 60%,#2C1A56 100%);
  color:#fff;padding:70px 0;
}
.cta-band::before{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,53,232,.38),transparent 68%);
}
.cta-band__inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.4;max-width:640px;}
.cta-band p{margin-top:12px;color:#C6C0DC;font-size:16px;max-width:620px;}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#B9B3CC;padding:68px 0 0;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;letter-spacing:.02em;}
.site-footer p{font-size:14px;line-height:1.9;color:#B9B3CC;}
.site-footer a{
  display:block;font-size:14px;color:#B9B3CC;padding:5px 0;
  transition:color .2s,transform .2s;
}
.site-footer a:hover{color:var(--brand-2);transform:translateX(3px);}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand__text{color:#fff;}
.footer-brand .brand__text span{color:var(--brand-2);}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 30px;display:flex;justify-content:space-between;
  gap:10px;flex-wrap:wrap;font-size:13px;color:#8B85A3;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .container{padding:0 18px;}
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .topbar__inner{height:56px;gap:12px;}
  .topbar__nav-link{display:none;}
  .topbar__actions .btn{display:none;}
  .icon-btn{display:inline-flex;}
  .search{
    display:none;position:absolute;left:16px;right:16px;top:62px;max-width:none;
    background:#fff;padding:10px;border-radius:14px;box-shadow:var(--shadow-md);z-index:70;
  }
  .search.is-open{display:block;}
  .cat-hero{padding:46px 0 58px;}
  .cat-hero h1{font-size:32px;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow__item::after{display:none;}
  .cta-band h2{font-size:25px;}
}
@media screen and (max-width:639px){
  .container{padding:0 16px;}
  .section{padding:58px 0;}
  .section-head h2{font-size:25px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero__lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .flow{grid-template-columns:1fr;gap:16px;}
  .compare-wrap{border:0;background:transparent;box-shadow:none;border-radius:0;}
  .compare-table caption{display:none;}
  .compare-table thead{display:none;}
  .compare-table,.compare-table tbody,.compare-table tr,.compare-table td{display:block;width:100%;}
  .compare-table tr{
    border:1px solid var(--line);border-radius:12px;background:#fff;
    padding:8px 16px;margin-bottom:14px;box-shadow:var(--shadow-sm);
  }
  .compare-table td{
    display:flex;gap:12px;padding:12px 0;font-size:14.5px;
    border-bottom:1px dashed var(--line);
  }
  .compare-table td:last-child{border-bottom:0;}
  .compare-table td::before{
    content:attr(data-label);flex:0 0 74px;
    font-size:13px;font-weight:600;color:var(--muted);line-height:1.85;
  }
  .faq__q{font-size:16px;padding:18px 52px 18px 18px;}
  .faq__q::after{right:18px;}
  .faq__a-inner{margin:0 18px 20px;font-size:15px;}
  .cta-band{padding:56px 0;}
  .cta-band__actions{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
}