/* roulang page: index */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-warn:#FF7A45;
  --bg-page:#F5F5FA;
  --bg-card:#FFFFFF;
  --bg-dark:#121223;
  --ink:#16172A;
  --muted:#5A5C72;
  --line:#E6E6F0;
  --ok:#18B981;
  --info:#F5A524;
  --err:#EF4444;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:100%}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.2px}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:92px 0}
.section-alt{background:#fff}
.section-dark{background:var(--bg-dark);color:#fff}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:44px}
.section-head h2{font-size:32px;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-accent)}
.section-head p{margin:10px 0 0;color:var(--muted);font-size:16px;max-width:660px;padding-left:16px}
.section-head .link-more{flex:0 0 auto;color:var(--c-primary);font-weight:600;font-size:15px;border-bottom:1px solid var(--c-primary);padding-bottom:2px;transition:.18s}
.section-head .link-more:hover{color:var(--c-primary-deep);border-color:var(--c-primary-deep)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-size:15.5px;font-weight:600;cursor:pointer;line-height:1.2;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(106,76,255,.24)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-soft)}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14)}
.btn-light{background:#fff;color:var(--c-primary-deep);box-shadow:var(--shadow-1)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(245,245,250,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .22s ease,background .22s ease}
.site-header.is-scrolled{background:#fff;box-shadow:0 6px 20px rgba(18,18,35,.08)}
.brand-row{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));color:#fff;display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:12.5px;font-weight:800;letter-spacing:.5px;flex:0 0 auto}
.brand-note{flex:1;text-align:center;font-size:13.5px;color:var(--muted);letter-spacing:.2px}
.brand-actions{display:flex;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.channel-bar{background:#fff;border-top:1px solid var(--line)}
.channel-list{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{display:block;padding:13px 16px;font-size:15px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap;transition:.18s}
.channel-list a:hover{color:var(--ink);background:var(--c-primary-soft)}
.channel-list a.is-active{color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:600}
.drawer-top{display:none}

/* Hero */
.hero{position:relative;padding:70px 0 84px;background:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;right:-16%;top:-24%;width:760px;height:760px;border-radius:50%;background:linear-gradient(120deg,var(--c-primary-soft),rgba(237,233,255,0) 66%);pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(106,76,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(106,76,255,.05) 1px,transparent 1px);background-size:56px 56px;mask-image:linear-gradient(180deg,#000,transparent 78%);-webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);pointer-events:none}
.hero .grid-container{position:relative;z-index:2}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13.5px;font-weight:600;margin-bottom:20px}
.hero-eyebrow i{font-size:12px}
.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.25;margin-bottom:18px}
.hero h1 em{font-style:normal;position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;background:var(--c-accent);opacity:.55;border-radius:3px;z-index:-1}
.hero-sub{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.trust-row{display:flex;gap:40px;margin-top:42px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:26px}
.trust-item .num{display:block;font-size:26px;font-weight:700;color:var(--c-primary)}
.trust-item span{font-size:13.5px;color:var(--muted)}
.hero-visual{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft);box-shadow:var(--shadow-3)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{content:"";position:absolute;inset:0;background:rgba(106,76,255,.08)}
.hero-float{position:absolute;left:20px;bottom:20px;right:20px;background:rgba(255,255,255,.94);backdrop-filter:blur(6px);border-radius:14px;padding:14px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;box-shadow:var(--shadow-1)}
.hero-float strong{font-size:15px;display:block}
.hero-float small{font-size:12.5px;color:var(--muted)}

/* 价值主张带 */
.value-band{position:relative;background:var(--bg-dark);color:#fff;padding:96px 0 104px;overflow:hidden}
.band-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.16}
.band-fade{position:absolute;inset:0;background:linear-gradient(120deg,rgba(18,18,35,.96),rgba(18,18,35,.7) 70%)}
.value-band .grid-container{position:relative;z-index:2}
.value-band h2{font-size:32px;margin-bottom:12px}
.value-band .lead{color:#B9BACE;max-width:640px;margin-bottom:48px}
.value-row{align-items:flex-end}
.value-block{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-card);padding:24px;transition:.22s ease;margin-bottom:22px}
.value-block:hover{background:rgba(255,255,255,.09);transform:translateY(-4px)}
.value-block .num{display:block;font-size:20px;color:var(--c-accent);margin-bottom:14px}
.value-block h3{font-size:19px;margin-bottom:8px}
.value-block p{color:#B9BACE;font-size:14.5px;margin:0}
.v1{min-height:150px}
.v2{min-height:176px}
.v3{min-height:202px}

/* 登录入口面板 */
.login-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.login-list li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px dashed var(--line);font-size:15.5px;color:var(--muted)}
.login-list li i{color:var(--c-primary);margin-top:6px;font-size:13px}
.login-list li strong{color:var(--ink);font-weight:600}
.login-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow-2)}
.login-panel h3{font-size:20px;margin-bottom:6px}
.login-panel .panel-sub{font-size:14px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input{width:100%;height:46px;border-radius:10px;border:1.5px solid var(--line);padding:0 14px;font-size:15px;background:#FCFCFE;transition:.18s}
.field input:hover{border-color:#C9C6E4}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(201,242,77,.75);background:#fff}
.form-tip{font-size:13px;color:var(--err);margin-top:10px;display:none}
.form-tip.is-visible{display:block}
.panel-links{display:flex;justify-content:space-between;gap:12px;margin-top:16px;font-size:13.5px}
.panel-links a{color:var(--c-primary);border-bottom:1px solid transparent;transition:.18s}
.panel-links a:hover{border-bottom-color:var(--c-primary)}

/* 功能分组 */
.seg-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.seg-tab{padding:10px 20px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--muted);font-size:15px;font-weight:600;cursor:pointer;transition:.18s}
.seg-tab:hover{border-color:var(--c-primary);color:var(--c-primary)}
.seg-tab.is-active{background:var(--c-accent);border-color:var(--c-accent);color:#2A2A12}
.seg-panel{display:none}
.seg-panel.is-active{display:block;animation:fadeUp .22s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.waterfall{column-count:2;column-gap:24px}
.feature-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);transition:.22s ease;break-inside:avoid;margin:0 0 24px;display:block;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.feature-card:hover::before{transform:scaleX(1)}
.feature-icon{width:42px;height:42px;border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:16px}
.feature-card h3{font-size:19px;margin-bottom:8px}
.feature-card p{color:var(--muted);font-size:15px;margin:0}
.feature-card.tall{padding:34px 24px}

/* 使用场景 */
.step-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step-list::before{content:"";position:absolute;top:24px;left:9%;right:9%;border-top:1px dashed #CFCFE4}
.step{position:relative;background:transparent;padding-top:66px}
.step .step-num{position:absolute;top:0;left:0;width:48px;height:48px;border-radius:14px;background:#fff;border:1.5px solid var(--line);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;box-shadow:var(--shadow-1)}
.step h3{font-size:19px;margin-bottom:8px}
.step p{color:var(--muted);font-size:15px;margin:0}

/* 成功案例 */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:72px}
.case-row:last-child{margin-bottom:0}
.case-row.reverse .case-media{order:2}
.case-media{border-radius:18px;overflow:hidden;aspect-ratio:4/3;background:var(--c-primary-soft);box-shadow:var(--shadow-2)}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-tag{display:inline-block;padding:5px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13px;font-weight:600;margin-bottom:14px}
.case-body h3{font-size:24px;margin-bottom:12px}
.case-body p{color:var(--muted);font-size:15.5px}
.case-stats{display:flex;gap:36px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
.case-stats .stat b{display:block;font-size:30px;font-weight:700;color:var(--c-primary);font-family:var(--font-mono)}
.case-stats .stat span{font-size:13.5px;color:var(--muted)}
.case-wide{background:var(--c-primary-soft);border-radius:20px;padding:40px;display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center}
.case-wide h3{font-size:23px;margin-bottom:12px}
.case-wide p{color:#4B4A66;margin:0}
.case-wide .stat-row{display:flex;gap:40px;justify-content:flex-end}
.case-wide .stat b{display:block;font-size:34px;font-weight:700;color:var(--c-primary-deep);font-family:var(--font-mono)}
.case-wide .stat span{font-size:13.5px;color:#5A5C72}

/* 价格 */
.price-section{background:var(--bg-dark);padding:96px 0;color:#fff}
.price-section .section-head h2{color:#fff}
.price-section .section-head p{color:#B9BACE}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;margin-top:64px}
.price-card{background:#fff;color:var(--ink);border-radius:18px;padding:30px 26px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;position:relative}
.price-card h3{font-size:20px;margin-bottom:6px}
.price-card .plan-desc{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.price-value{display:flex;align-items:baseline;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:20px}
.price-value b{font-family:var(--font-mono);font-size:40px;font-weight:700;letter-spacing:-2px;color:var(--ink)}
.price-value span{font-size:14px;color:var(--muted)}
.price-list{margin-bottom:26px;flex:1}
.price-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);padding:11px 0;border-bottom:1px dashed var(--line)}
.price-list li:last-child{border-bottom:0}
.price-list li i{color:var(--ok);font-size:13px;margin-top:6px}
.price-card.featured{transform:translateY(-16px);border:2px solid var(--c-primary);box-shadow:var(--shadow-2);z-index:2}
.price-card.featured .price-value b{color:var(--c-primary)}
.price-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--c-warn);color:#fff;font-size:12.5px;font-weight:700;padding:5px 16px;border-radius:999px;white-space:nowrap}

/* 资讯列表 */
.news-grid{margin-top:0}
.news-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:.22s ease;height:100%;margin-bottom:24px}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D8D3FF}
.news-thumb{aspect-ratio:16/9;background:var(--c-primary-soft);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-badge{align-self:flex-start;padding:4px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:12.5px;font-weight:600;margin-bottom:12px}
.news-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14.5px;color:var(--muted);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.news-foot time{font-family:var(--font-mono);font-size:13px;color:var(--muted);letter-spacing:-.2px}
.news-foot i{color:var(--c-primary);font-size:13px;transition:transform .18s ease}
.news-card:hover .news-foot i{transform:translateX(4px)}
.empty-state{background:#fff;border:1px dashed #D5D5E6;border-radius:var(--radius-card);padding:56px 24px;text-align:center;color:var(--muted)}
.empty-state i{font-size:30px;color:#C0BCE8;display:block;margin-bottom:14px}
.empty-state p{font-size:15px;margin:0}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:.2s ease}
.faq-item:hover{border-color:#D8D3FF}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;padding:20px 22px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.5}
.faq-q .q-mark{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--c-primary-soft);color:var(--c-primary);display:inline-flex;align-items:center;justify-content:center;font-size:13px;margin-right:4px}
.faq-q .q-text{flex:1}
.faq-q .chev{flex:0 0 auto;color:var(--c-primary);transition:transform .22s ease;font-size:14px}
.faq-item.is-open .faq-q .chev{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{margin:0 22px 20px 56px;padding-left:16px;border-left:3px solid var(--c-accent);color:var(--muted);font-size:15.5px}

/* CTA */
.cta-band{background:linear-gradient(120deg,var(--c-primary),var(--c-primary-deep));border-radius:24px;padding:52px 48px;display:flex;justify-content:space-between;align-items:center;gap:36px;color:#fff;box-shadow:var(--shadow-3)}
.cta-band h2{font-size:30px;margin-bottom:10px}
.cta-band p{margin:0;color:rgba(255,255,255,.86);font-size:16px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex:0 0 auto;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--bg-dark);color:#B9BACE;padding:70px 0 0;position:relative;margin-top:92px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-primary),var(--c-accent),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--c-primary),var(--c-accent))}
.footer-col p{font-size:14.5px;line-height:1.85;margin-bottom:14px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;transition:.18s}
.footer-col a:hover{color:var(--c-accent)}
.footer-meta{font-size:13.5px;color:#8A8AA0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:#8A8AA0}

/* 回到顶部 */
.back-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:0;background:var(--c-primary);color:#fff;font-size:16px;cursor:pointer;box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:.22s ease;z-index:55}
.back-top.is-visible{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--c-primary-deep);transform:translateY(-2px)}

@media (max-width:1199px){
  .section{padding:80px 0}
  .hero h1{font-size:clamp(28px,4vw,42px)}
  .case-wide .stat-row{gap:28px}
}
@media (max-width:1023px){
  .brand-note{display:none}
  .section{padding:64px 0}
  .section-head h2{font-size:28px}
  .login-wrap{grid-template-columns:1fr;gap:36px}
  .step-list{grid-template-columns:repeat(2,1fr);gap:36px 24px}
  .step-list::before{display:none}
  .case-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .case-row.reverse .case-media{order:0}
  .case-wide{grid-template-columns:1fr;gap:24px}
  .case-wide .stat-row{justify-content:flex-start}
  .price-grid{grid-template-columns:1fr;gap:32px;margin-top:48px}
  .price-card.featured{transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
}
@media (max-width:820px){
  .nav-toggle{display:flex}
  .brand-actions{display:none}
  .brand-row{justify-content:space-between}
  .channel-bar{position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:90;transform:translateY(-102%);transition:transform .28s ease;border-top:0;overflow-y:auto;padding-bottom:36px}
  .channel-bar.is-open{transform:translateY(0)}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;background:#fff;z-index:2}
  .drawer-top strong{font-size:16px}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:20px;line-height:1;color:var(--muted);cursor:pointer}
  .channel-list{flex-direction:column;gap:0;padding:12px 20px 0;overflow:visible}
  .channel-list a{padding:18px 2px;font-size:18px;border-bottom:1px solid var(--line);border-left:0}
  .channel-list a.is-active{color:var(--c-primary);border-bottom-color:var(--line)}
  .channel-list a.is-active::before{content:"";display:inline-block;width:4px;height:16px;background:var(--c-accent);border-radius:2px;margin-right:10px;vertical-align:-2px}
  body.drawer-open{overflow:hidden}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:52px 0}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .trust-row{gap:24px;margin-top:32px}
  .trust-item .num{font-size:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .section-head h2{font-size:24px}
  .waterfall{column-count:1}
  .step-list{grid-template-columns:1fr;gap:28px}
  .case-stats{gap:24px}
  .case-stats .stat b{font-size:26px}
  .price-value b{font-size:34px}
  .cta-band{padding:32px 22px;border-radius:18px}
  .cta-band h2{font-size:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
  .login-panel{padding:24px 20px}
  .faq-a-inner{margin:0 18px 18px 18px;padding-left:14px}
  .faq-q{font-size:16px;padding:18px}
  .section-dark .section-head p{color:#B9BACE}
}
@media (max-width:520px){
  body{font-size:16px}
  .brand{font-size:15.5px}
  .brand-mark{width:30px;height:30px;border-radius:9px;font-size:11.5px}
  .hero h1{font-size:26px}
  .hero h1 em{white-space:normal}
  .hero-cta .btn{width:100%}
  .hero-float{flex-direction:column;align-items:flex-start;gap:4px}
  .price-card.featured{transform:none}
  .back-top{right:16px;bottom:16px;width:40px;height:40px}
}

/* roulang page: article */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-orange:#FF7A45;
  --c-success:#18B981;
  --c-warn:#F5A524;
  --c-error:#EF4444;
  --c-ink:#16172A;
  --c-muted:#5A5C72;
  --c-line:#E6E6F0;
  --bg-page:#F5F5FA;
  --bg-card:#FFFFFF;
  --bg-dark:#121223;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --space-7:88px;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-primary-deep);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.container,.grid-container{max-width:1200px;margin:0 auto;padding:0 24px;}
.grid-container.full{max-width:none;}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .22s ease;}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(18,18,35,.08);}
.brand-bar{padding:0;}
.brand-row{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-text{font-size:18px;font-weight:700;color:var(--c-ink);white-space:nowrap;}
.brand-note{flex:1 1 auto;font-size:13px;color:var(--c-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;border-radius:10px;
  padding:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--c-ink);border-radius:2px;margin:4px 0;transition:transform .2s ease;}
.nav-toggle:hover{border-color:var(--c-primary);}
.drawer-top{display:none;}

/* ---------- Channel bar ---------- */
.channel-bar{background:#fff;border-top:1px solid #F0F0F7;}
.channel-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list li{flex:0 0 auto;}
.channel-list a{
  display:block;padding:14px 14px;font-size:15px;color:var(--c-muted);
  border-bottom:2px solid transparent;white-space:nowrap;font-weight:500;
}
.channel-list a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary-soft);}
.channel-list a.is-active{color:var(--c-primary);border-bottom-color:var(--c-primary);font-weight:600;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:all .18s ease;line-height:1.2;
}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(106,76,255,.24);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-block{width:100%;}

/* ---------- Breadcrumb ---------- */
.crumb-wrap{background:#fff;border-bottom:1px solid var(--c-line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13.5px;color:var(--c-muted);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C4C4D4;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb .current{color:var(--c-ink);font-weight:600;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- Article layout ---------- */
.section{padding:56px 0 72px;}
.layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;align-items:start;}
.article-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:36px 40px 40px;}
.badge-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:18px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.badge-neutral{background:#F1F1F7;color:var(--c-muted);}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.article-title{font-size:clamp(26px,3.2vw,38px);line-height:1.3;letter-spacing:-.2px;margin-bottom:16px;}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--c-muted);padding-bottom:22px;border-bottom:1px dashed var(--c-line);font-family:var(--font-mono);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.cover-figure{margin:26px 0 6px;}
.cover-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-img);background:var(--c-primary-soft);}
.cover-figure figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}

/* ---------- Prose ---------- */
.prose{margin-top:26px;max-width:760px;}
.prose>*+*{margin-top:20px;}
.prose p{font-size:16.5px;line-height:1.85;color:#23243A;}
.prose h2{font-size:28px;margin-top:40px;padding-left:14px;position:relative;}
.prose h2::before{content:"";position:absolute;left:0;top:6px;width:4px;height:24px;border-radius:2px;background:var(--c-accent);}
.prose h3{font-size:21px;margin-top:30px;}
.prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.prose ul{display:grid;gap:10px;}
.prose ul li{position:relative;padding-left:22px;}
.prose ul li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;background:var(--c-accent);}
.prose ol{counter-reset:step;display:grid;gap:10px;}
.prose ol li{position:relative;padding-left:34px;counter-increment:step;}
.prose ol li::before{
  content:counter(step,decimal-leading-zero);position:absolute;left:0;top:1px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:7px;padding:1px 7px;
}
.prose blockquote{
  margin:0;padding:18px 22px;background:#F5F5FA;border-left:4px solid var(--c-primary);
  border-radius:0 12px 12px 0;color:#33344C;
}
.prose blockquote p{margin:0;font-size:15.5px;}
.prose img{border-radius:var(--radius-img);margin:0 auto;}
.prose figure figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px;}
.prose code{font-family:var(--font-mono);font-size:14px;background:#F1F1F7;padding:2px 6px;border-radius:6px;}
.prose pre{background:#121223;color:#E9E9F5;padding:18px 20px;border-radius:12px;overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;}
.prose pre code{background:none;color:inherit;padding:0;}
.prose table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;border-radius:12px;}
.prose th,.prose td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
.prose th{background:#F5F5FA;font-weight:600;}
.prose hr{border:none;border-top:1px dashed var(--c-line);margin:32px 0;}

.empty-state{text-align:center;padding:64px 20px;}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:700;color:var(--c-primary);
}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{color:var(--c-muted);font-size:14.5px;margin-bottom:22px;}

/* ---------- Tags / nav cards ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px dashed var(--c-line);}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--radius-pill);font-size:13.5px;
  background:#F5F5FA;color:var(--c-muted);border:1px solid var(--c-line);transition:all .18s ease;
}
.tag:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px;}
.pager-card{
  display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .2s ease;
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-primary-soft);}
.pager-card .pager-label{font-size:12.5px;color:var(--c-muted);font-family:var(--font-mono);letter-spacing:.5px;}
.pager-card strong{display:block;margin-top:8px;font-size:16.5px;color:var(--c-ink);line-height:1.5;}
.pager-card span.arrow{display:inline-block;color:var(--c-primary);font-family:var(--font-mono);margin-right:6px;}
.back-channel{margin-top:26px;}

/* ---------- Sidebar ---------- */
.side-col{display:grid;gap:20px;position:sticky;top:96px;}
.side-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:22px 22px 24px;}
.side-card h3{font-size:16px;margin-bottom:14px;padding-left:12px;position:relative;}
.side-card h3::before{content:"";position:absolute;left:0;top:4px;width:3px;height:16px;border-radius:2px;background:var(--c-primary);}
.side-nav li+li{margin-top:6px;}
.side-nav a{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14.5px;color:#33344C;padding:9px 12px;border-radius:10px;}
.side-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.side-nav a span.arrow{font-family:var(--font-mono);color:#B7B7C8;font-size:13px;}
.mini-list li+li{margin-top:14px;padding-top:14px;border-top:1px dashed var(--c-line);}
.mini-list a{display:flex;gap:12px;align-items:flex-start;}
.mini-list img{width:74px;height:56px;object-fit:cover;border-radius:10px;flex:0 0 auto;background:var(--c-primary-soft);}
.mini-list strong{display:block;font-size:14.5px;font-weight:600;color:var(--c-ink);line-height:1.5;transition:color .18s ease;}
.mini-list a:hover strong{color:var(--c-primary);}
.mini-list em{display:block;font-style:normal;font-size:12.5px;color:var(--c-muted);font-family:var(--font-mono);margin-top:4px;}
.side-cta{background:linear-gradient(120deg,#6A4CFF,#4B2FD6);color:#fff;border:none;}
.side-cta h3{color:#fff;}
.side-cta h3::before{background:var(--c-accent);}
.side-cta p{font-size:14px;color:#DCD8FF;margin-bottom:16px;line-height:1.75;}

/* ---------- Section heading ---------- */
.block{padding:72px 0;}
.block-dark{background:var(--bg-dark);color:#fff;}
.block-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.block-head h2{font-size:clamp(24px,3vw,32px);position:relative;padding-left:16px;}
.block-head h2::before{content:"";position:absolute;left:0;top:8px;width:5px;height:24px;border-radius:3px;background:var(--c-accent);}
.block-head p{color:var(--c-muted);font-size:14.5px;margin-top:10px;max-width:640px;}
.block-head .more{font-size:14.5px;font-weight:600;font-family:var(--font-mono);}

/* ---------- Related cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  background:var(--bg-card);border:1px solid var(--c-line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative;
}
.post-card::after{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--c-primary);transition:width .25s ease;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DAD5FF;}
.post-card:hover::after{width:100%;}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.post-card h3{font-size:17.5px;line-height:1.5;}
.post-card p{font-size:14.5px;color:var(--c-muted);line-height:1.75;}
.post-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);font-family:var(--font-mono);}
.post-card .foot .arrow{color:var(--c-primary);font-size:16px;}

/* ---------- FAQ ---------- */
.faq-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;}
.faq-wrap .accordion{margin:0;background:transparent;border:none;}
.faq-wrap .accordion-item{border-bottom:1px solid var(--c-line);}
.faq-wrap .accordion-item:last-child{border-bottom:none;}
.faq-wrap .accordion-title{
  display:flex;align-items:center;gap:12px;font-size:16px;font-weight:600;color:var(--c-ink);
  padding:20px 24px;border:none;background:transparent;position:relative;transition:background .18s ease,color .18s ease;
}
.faq-wrap .accordion-title::before{
  content:"?";position:static;width:24px;height:24px;flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13px;font-weight:700;
  order:-1;
}
.faq-wrap .accordion-title::after{
  content:"›";position:absolute;right:24px;top:50%;transform:translateY(-50%) rotate(90deg);
  font-size:20px;color:var(--c-muted);transition:transform .22s ease;
}
.faq-wrap .accordion-title[aria-expanded="true"]{background:#FBFBFF;color:var(--c-primary-deep);}
.faq-wrap .accordion-title[aria-expanded="true"]::after{transform:translateY(-50%) rotate(-90deg);color:var(--c-primary);}
.faq-wrap .accordion-title:hover{background:var(--c-primary-soft);}
.faq-wrap .accordion-content{padding:0 24px 22px 60px;color:var(--c-muted);font-size:15px;line-height:1.85;background:#FBFBFF;animation:fadeIn .22s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,#6A4CFF,#4B2FD6);border-radius:20px;padding:44px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;color:#fff;
  box-shadow:0 20px 44px rgba(75,47,214,.28);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);}
.cta-band p{color:#DCD8FF;font-size:15px;margin-top:10px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-dark);color:#B9BACE;margin-top:0;position:relative;}
.site-footer::before{content:"";display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(201,242,77,.6),transparent);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 40px;}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.85;color:#B9BACE;margin-bottom:12px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-meta{font-size:13.5px;color:#8E90A8;font-family:var(--font-mono);}
.footer-col ul li+li{margin-top:10px;}
.footer-col ul a{color:#B9BACE;font-size:14.5px;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);font-size:13.5px;color:#8E90A8;
}
.footer-bottom span:last-child{font-family:var(--font-mono);}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;border:none;cursor:pointer;font-size:18px;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:70;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--c-primary-deep);}

/* ---------- Responsive ---------- */
@media screen and (max-width:1199px){
  .grid-container{max-width:100%;}
  .layout{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:28px;}
  .footer-grid{gap:28px;}
}
@media screen and (max-width:1023px){
  .brand-note{display:none;}
  .layout{grid-template-columns:1fr;gap:32px;}
  .side-col{position:static;}
  .article-card{padding:28px 26px 32px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
  .block{padding:60px 0;}
}
@media screen and (max-width:767px){
  body{font-size:16px;}
  .container,.grid-container{padding:0 16px;}
  .brand-actions{display:none;}
  .nav-toggle{display:block;margin-left:auto;}
  .brand-row{height:60px;gap:12px;}
  .brand-text{font-size:16px;}
  .channel-bar{
    position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:#fff;z-index:90;
    transform:translateX(102%);transition:transform .26s ease;overflow-y:auto;
    box-shadow:-12px 0 40px rgba(18,18,35,.18);border-top:none;padding-bottom:24px;
  }
  .channel-bar.is-open{transform:translateX(0);}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--c-line);}
  .drawer-top strong{font-size:16px;color:var(--c-ink);}
  .drawer-close{background:none;border:none;font-size:26px;line-height:1;color:var(--c-muted);cursor:pointer;}
  .channel-list{flex-direction:column;align-items:stretch;gap:0;padding:10px 12px;overflow:visible;}
  .channel-list li{width:100%;}
  .channel-list a{padding:15px 14px;border-bottom:none;border-radius:10px;font-size:16.5px;}
  .channel-list a.is-active{background:var(--c-primary-soft);border-bottom-color:transparent;}
  .channel-list a:hover{background:#F7F6FF;}
  .section{padding:40px 0 52px;}
  .block{padding:48px 0;}
  .article-card{padding:22px 18px 26px;border-radius:14px;}
  .cover-figure{margin:20px 0 4px;}
  .crumb{padding:12px 0;}
  .crumb .current{max-width:180px;}
  .pager{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;border-radius:16px;}
  .cta-band p{max-width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:44px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .prose h2{font-size:23px;}
  .prose h3{font-size:19px;}
  .to-top{right:16px;bottom:18px;}
}
@media screen and (max-width:480px){
  .article-title{font-size:24px;}
  .badge{font-size:12px;padding:4px 11px;}
  .article-meta{gap:12px;font-size:12.5px;}
  .mini-list img{width:64px;height:50px;}
  .btn{padding:11px 18px;font-size:14.5px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-orange:#FF7A45;
  --bg-page:#F5F5FA;
  --c-surface:#FFFFFF;
  --bg-dark:#121223;
  --c-ink:#16172A;
  --c-muted:#5A5C72;
  --c-line:#E6E6F0;
  --c-ok:#18B981;
  --c-warn:#F5A524;
  --c-err:#EF4444;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:40px; --sp-5:64px; --sp-6:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em;}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.num{font-family:"SFMono-Regular",Menlo,Consolas,"Roboto Mono",monospace;font-variant-numeric:tabular-nums;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(106,76,255,.24);}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 4px 12px rgba(106,76,255,.22);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-surface);}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(-1px);}
.btn-ghost{border-color:rgba(255,255,255,.66);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:120;}
.brand-bar{background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--c-line);}
.site-header.is-scrolled .brand-bar{box-shadow:0 6px 20px rgba(18,18,35,.07);}
.brand-row{display:flex;align-items:center;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-size:12.5px;font-weight:800;letter-spacing:.04em;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;}
.brand-note{flex:1;font-size:13px;color:var(--c-muted);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.brand-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;
  border-radius:10px;padding:0;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:.2s;}
.channel-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.channel-list{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list a{
  position:relative;display:inline-block;padding:15px 14px;font-size:15px;color:var(--c-muted);white-space:nowrap;
}
.channel-list a:hover{color:var(--c-primary);}
.channel-list a.is-active{color:var(--c-primary);font-weight:600;}
.channel-list a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.drawer-top{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-wrap{padding:22px 0 0;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#c3c4d4;}
.crumb a:hover{color:var(--c-primary);}
.crumb [aria-current="page"]{color:var(--c-ink);font-weight:600;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:56px 0 88px;overflow:hidden;background:linear-gradient(180deg,#fff 0%,#F5F5FA 100%);}
.hero::before{
  content:"";position:absolute;top:-140px;right:-180px;width:640px;height:640px;
  background:linear-gradient(120deg,rgba(106,76,255,.16),rgba(201,242,77,.16));
  transform:rotate(18deg);border-radius:80px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(106,76,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(106,76,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 78%);
}
.hero .grid-container{position:relative;z-index:2;}
.hero-grid{display:flex;align-items:center;gap:56px;}
.hero-copy{flex:1 1 52%;min-width:0;}
.hero-visual{flex:1 1 48%;min-width:0;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.hero h1{font-size:clamp(30px,4.4vw,48px);line-height:1.25;margin:20px 0 18px;}
.hero h1 em{font-style:normal;position:relative;white-space:nowrap;}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;
  background:var(--c-accent);opacity:.55;border-radius:3px;z-index:-1;
}
.hero-sub{font-size:17.5px;color:var(--c-muted);max-width:600px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.trust-row{display:flex;flex-wrap:wrap;gap:32px;padding-top:26px;border-top:1px solid var(--c-line);}
.trust-item{min-width:112px;}
.trust-item b{display:block;font-size:26px;line-height:1.1;color:var(--c-ink);}
.trust-item span{font-size:13px;color:var(--c-muted);}
.media-frame{
  position:relative;border-radius:20px;overflow:hidden;background:var(--c-primary-soft);
  box-shadow:var(--shadow-3);aspect-ratio:16/10;
}
.media-frame img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.media-frame::after{
  content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(106,76,255,.16),rgba(18,18,35,.10));
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:var(--c-surface);}
.section.dark{background:var(--bg-dark);color:#fff;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{
  display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--c-primary);margin-bottom:14px;
}
.section-head .kicker::before{content:"";width:4px;height:24px;border-radius:2px;background:var(--c-accent);}
.section-head h2{font-size:clamp(24px,3vw,34px);}
.section-head p{margin-top:14px;color:var(--c-muted);max-width:700px;}
.section.dark .section-head p{color:#B9BACE;}
.section.dark .section-head h2{color:#fff;}

/* ---------- 图文双列 ---------- */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.duo-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s ease,box-shadow .25s ease;
}
.duo-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.duo-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft);}
.duo-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.duo-card:hover .duo-thumb img{transform:scale(1.03);}
.duo-body{padding:26px 26px 28px;}
.duo-body h3{font-size:21px;margin-bottom:12px;}
.duo-body p{color:var(--c-muted);font-size:15.5px;}
.check-list{margin-top:18px;display:grid;gap:11px;}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--c-ink);}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:9px;height:9px;border-radius:3px;
  background:var(--c-accent);
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;position:relative;}
.steps::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;
  border-top:2px dashed var(--c-line);z-index:0;
}
.step{position:relative;z-index:1;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:26px 22px;box-shadow:var(--shadow-1);transition:.25s;}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#d9d2ff;}
.step .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);font-size:15px;font-weight:700;margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--c-muted);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);transition:.25s ease;position:relative;overflow:hidden;
}
.info-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.info-card:hover::before{transform:scaleX(1);}
.info-card h3{font-size:18px;margin:14px 0 10px;}
.info-card p{font-size:14.8px;color:var(--c-muted);}
.icon-dot{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:12px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:18px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.badge.ok{background:rgba(24,185,129,.12);color:#0f8a60;}
.badge.warn{background:rgba(245,165,36,.14);color:#a8680a;}
.badge.err{background:rgba(239,68,68,.12);color:#c02f2f;}

/* ---------- 登录面板 ---------- */
.panel-section{background:var(--bg-dark);color:#fff;position:relative;overflow:hidden;}
.panel-section::before{
  content:"";position:absolute;top:-160px;left:-120px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(106,76,255,.55),transparent 68%);
}
.panel-wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;}
.panel-copy h2{font-size:clamp(24px,3vw,34px);color:#fff;}
.panel-copy p{color:#B9BACE;margin-top:14px;}
.panel-feats{margin-top:26px;display:grid;gap:12px;}
.panel-feats li{position:relative;padding-left:26px;color:#DCDCEA;font-size:15px;}
.panel-feats li::before{
  content:"";position:absolute;left:2px;top:10px;width:9px;height:9px;border-radius:3px;background:var(--c-accent);
}
.login-card{
  background:#fff;border-radius:20px;padding:32px 28px;box-shadow:var(--shadow-3);color:var(--c-ink);
}
.login-card h3{font-size:20px;margin-bottom:6px;}
.login-card .hint{font-size:13.5px;color:var(--c-muted);margin-bottom:22px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;color:var(--c-ink);}
.field input{
  width:100%;height:46px;border:1.5px solid var(--c-line);border-radius:10px;
  padding:0 14px;font-size:15px;font-family:inherit;background:#fff;color:var(--c-ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#A5A6B8;}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(201,242,77,.8);}
.field .tip{font-size:12.5px;color:var(--c-muted);margin-top:7px;}
.field.err input{border-color:var(--c-err);}
.field.err .tip{color:var(--c-err);}
.captcha-row{display:flex;gap:12px;}
.captcha-row input{flex:1;}
.captcha-box{
  width:112px;height:46px;border-radius:10px;border:1.5px dashed var(--c-line);
  background:repeating-linear-gradient(45deg,#F5F5FA,#F5F5FA 8px,#EDE9FF 8px,#EDE9FF 16px);
  display:flex;align-items:center;justify-content:center;font-size:12.5px;color:var(--c-muted);
  flex-shrink:0;cursor:pointer;
}
.login-links{display:flex;justify-content:space-between;gap:12px;margin-top:16px;font-size:13.5px;}
.login-links a{color:var(--c-primary);border-bottom:1px solid rgba(106,76,255,.35);padding-bottom:2px;}
.login-links a:hover{color:var(--c-primary-deep);border-color:var(--c-primary-deep);}

/* ---------- 清单 + FAQ ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
.order-list{counter-reset:ol;display:grid;gap:16px;}
.order-list li{
  counter-increment:ol;position:relative;padding:18px 20px 18px 62px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;
  font-size:15px;color:var(--c-muted);box-shadow:var(--shadow-1);
}
.order-list li::before{
  content:counter(ol,decimal-leading-zero);position:absolute;left:20px;top:18px;
  font-family:"SFMono-Regular",Menlo,Consolas,monospace;font-size:15px;font-weight:700;color:var(--c-primary);
}
.order-list li strong{display:block;color:var(--c-ink);font-size:15.5px;margin-bottom:4px;}

.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfc6ff;box-shadow:var(--shadow-2);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;font-size:16.5px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-ico{
  width:26px;height:26px;flex-shrink:0;border-radius:8px;background:var(--c-primary-soft);
  color:var(--c-primary-deep);display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;transition:transform .22s ease;
}
.faq-item[open] .faq-ico{transform:rotate(45deg);}
.faq-body{
  padding:0 24px 22px;font-size:15px;color:var(--c-muted);
  border-left:3px solid var(--c-accent);margin-left:0;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-deep));
  border-radius:24px;padding:48px 52px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:0 24px 48px rgba(75,47,214,.26);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  background:radial-gradient(circle,rgba(201,242,77,.35),transparent 70%);
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);color:#fff;position:relative;z-index:2;}
.cta-band p{color:rgba(255,255,255,.82);margin-top:10px;max-width:640px;position:relative;z-index:2;}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-dark);color:#B9BACE;padding:72px 0 28px;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,242,77,.55),rgba(106,76,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px;}
.footer-col p{font-size:14px;color:#9EA0B5;line-height:1.75;margin-bottom:10px;}
.footer-meta{font-size:13.5px;color:#82849C;margin-bottom:6px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:#B9BACE;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#7C7E96;
}
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.25s ease;z-index:150;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--c-primary-deep);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .grid-container{max-width:1080px;}
  .hero-grid{gap:40px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:34px;}
}
@media (max-width:1023px){
  .brand-note{display:none;}
  .hero{padding:44px 0 68px;}
  .hero-grid{flex-direction:column-reverse;gap:34px;}
  .hero-copy,.hero-visual{flex:1 1 auto;width:100%;}
  .section{padding:64px 0;}
  .duo{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps::before{display:none;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .panel-wrap{grid-template-columns:1fr;gap:34px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .grid-container{padding:0 16px;}
  .brand-actions{display:none;}
  .nav-toggle{display:flex;}
  .channel-bar{
    position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:200;
    transform:translateX(102%);transition:transform .28s ease;overflow-y:auto;
    visibility:hidden;border-bottom:none;
  }
  .channel-bar.is-open{transform:none;visibility:visible;}
  .drawer-top{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 16px;border-bottom:1px solid var(--c-line);position:sticky;top:0;background:#fff;
  }
  .drawer-top strong{font-size:16px;}
  .drawer-close{background:none;border:none;font-size:26px;line-height:1;color:var(--c-muted);cursor:pointer;}
  .channel-list{flex-direction:column;align-items:stretch;gap:0;padding:10px 0 40px;}
  .channel-list a{padding:16px;font-size:17px;border-bottom:1px solid var(--c-line);}
  .channel-list a.is-active{background:var(--c-primary-soft);font-weight:700;}
  .channel-list a.is-active::after{display:none;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:30px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .card-grid{grid-template-columns:1fr;}
  .duo-body{padding:22px 20px 24px;}
  .login-card{padding:26px 20px;border-radius:16px;}
  .trust-row{gap:22px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-col:first-child{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:480px){
  .hero h1{font-size:28px;}
  .btn{width:100%;}
  .hero-cta .btn{width:100%;}
  .brand-text{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .captcha-row{flex-wrap:wrap;}
  .captcha-box{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-warn:#FF7A45;
  --c-success:#18B981;
  --c-danger:#EF4444;
  --bg-page:#F5F5FA;
  --bg-card:#FFFFFF;
  --bg-dark:#121223;
  --c-ink:#16172A;
  --c-muted:#5A5C72;
  --c-line:#E6E6F0;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --section-y:96px;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:6px}
::selection{background:var(--c-primary-soft);color:var(--c-primary-deep)}

.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1440px){.grid-container{max-width:1280px}}
@media (max-width:767px){.grid-container{padding-left:16px;padding-right:16px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(106,76,255,.28)}
.btn-primary:hover{background:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px rgba(106,76,255,.22)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.6}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.badge-neutral{background:#F0F0F6;color:var(--c-muted)}
.badge-accent{background:rgba(201,242,77,.28);color:#4A5A0A}
.badge-warn{background:rgba(255,122,69,.14);color:#B4481D}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;transition:box-shadow .25s ease}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(18,18,35,.08)}
.brand-bar{border-bottom:1px solid var(--c-line);background:#fff}
.brand-row{display:flex;align-items:center;gap:20px;min-height:64px;padding:8px 0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;color:var(--c-ink)}
.brand-note{flex:1 1 auto;margin:0;font-size:13px;color:var(--c-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--c-ink);border-radius:2px}
.channel-bar{border-bottom:1px solid var(--c-line);background:#fff}
.drawer-top{display:none}
.drawer-close{display:none}
.channel-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list li{flex:0 0 auto}
.channel-list a{
  display:inline-block;position:relative;padding:16px 14px;font-size:15px;color:var(--c-muted);font-weight:500;
}
.channel-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;
  background:transparent;transition:background-color .2s ease;
}
.channel-list a:hover{color:var(--c-primary-deep)}
.channel-list a.is-active{color:var(--c-primary);font-weight:700}
.channel-list a.is-active::after{background:var(--c-primary)}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{padding:20px 0 0;background:var(--bg-page)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#B9BACE}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current="page"]{color:var(--c-ink);font-weight:600}

/* ---------- Banner ---------- */
.banner{
  position:relative;margin-top:20px;padding:72px 0 64px;color:#fff;overflow:hidden;
  background:linear-gradient(120deg,rgba(18,18,35,.92),rgba(75,47,214,.86)),
             url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.banner::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.banner .grid-container{position:relative;z-index:1}
.eyebrow{
  display:inline-block;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(201,242,77,.2);color:var(--c-accent);margin-bottom:18px;
}
.banner h1{font-size:clamp(30px,4.4vw,46px);line-height:1.25;font-weight:800;letter-spacing:.4px;max-width:900px}
.banner-sub{margin-top:18px;font-size:17px;color:rgba(255,255,255,.86);max-width:700px}
.banner-stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:36px}
.stat{min-width:120px}
.stat-num{font-family:var(--mono);font-size:32px;font-weight:700;line-height:1.1;color:var(--c-accent)}
.stat-label{display:block;margin-top:6px;font-size:13px;color:rgba(255,255,255,.72)}

/* ---------- 子标签条 ---------- */
.subbar-wrap{background:#fff;border-bottom:1px solid var(--c-line);position:sticky;top:64px;z-index:40}
.subbar{display:flex;align-items:center;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.subbar::-webkit-scrollbar{display:none}
.subbar li{flex:0 0 auto}
.subbar a{
  display:inline-block;padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;
  background:#F3F3F9;color:var(--c-muted);border:1px solid transparent;
}
.subbar a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.subbar a.is-active{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* ---------- 板块 ---------- */
.section{padding:var(--section-y) 0}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .bar{width:4px;height:24px;border-radius:2px;background:var(--c-accent);display:block;margin-bottom:16px}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.35;letter-spacing:.2px}
.section-desc{margin-top:14px;font-size:16px;color:var(--c-muted);max-width:700px}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.section-head--split .section-desc{margin-top:12px}

/* ---------- 卡片栅格 ---------- */
.card-grid{margin-left:-12px;margin-right:-12px}
.card-grid>.cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.card{
  position:relative;height:100%;background:var(--bg-card);border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(106,76,255,.28)}
.card:hover::before{transform:scaleX(1)}
.card-icon{
  display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:14px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:19px;margin-bottom:18px;
}
.card h3{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:10px}
.card p{font-size:15px;color:var(--c-muted)}
.card-media{margin:-26px -24px 20px;border-radius:0;overflow:hidden}
.card-media img{width:100%;height:180px;object-fit:cover;border-radius:0;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:700;color:var(--c-primary)}
.card-link:hover{color:var(--c-primary-deep);gap:10px}
.card-list{margin-top:16px;display:grid;gap:8px}
.card-list li{position:relative;padding-left:18px;font-size:14px;color:var(--c-muted)}
.card-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;background:var(--c-accent);border-radius:2px}

/* ---------- 流程 ---------- */
.flow{margin-left:-12px;margin-right:-12px}
.flow>.cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.flow-item{
  position:relative;height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.flow-num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--c-primary);letter-spacing:1px}
.flow-item h3{margin-top:12px;font-size:18px;font-weight:700;line-height:1.5}
.flow-item p{margin-top:8px;font-size:14px;color:var(--c-muted)}

/* ---------- 图文 + 信号列表 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.split-media img{width:100%;height:360px;object-fit:cover;box-shadow:var(--shadow-2)}
.split-media figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}
.signal-list{display:grid;gap:14px}
.signal-item{
  display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--c-line);
  border-left:4px solid var(--c-warn);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease;
}
.signal-item:hover{transform:translateX(3px);box-shadow:var(--shadow-2)}
.signal-item i{color:var(--c-warn);font-size:17px;margin-top:5px}
.signal-item h3{font-size:16px;font-weight:700;line-height:1.5}
.signal-item p{margin-top:6px;font-size:14px;color:var(--c-muted)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;box-shadow:var(--shadow-1);overflow:hidden}
.faq-item.is-open{border-color:rgba(106,76,255,.34);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;padding:20px 22px;background:transparent;border:0;
  text-align:left;font-size:16px;font-weight:700;color:var(--c-ink);cursor:pointer;
}
.faq-mark{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-family:var(--mono);font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.faq-text{flex:1 1 auto}
.faq-arrow{color:var(--c-muted);font-size:13px;transition:transform .22s ease,color .22s ease}
.faq-item.is-open .faq-arrow{transform:rotate(90deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open .faq-a{max-height:560px}
.faq-a-inner{padding:0 22px 22px 62px;font-size:15px;color:var(--c-muted);border-left:3px solid transparent}
.faq-item.is-open .faq-a-inner{border-left-color:var(--c-accent);animation:fadeIn .24s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;padding:56px 0;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:rgba(201,242,77,.16);
}
.cta-row{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-row h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;line-height:1.4}
.cta-row p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.85);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-dark);color:#B9BACE;padding:64px 0 0;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--c-primary),var(--c-accent),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:#B9BACE}
.footer-col a:hover{color:var(--c-accent)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.85;max-width:380px}
.footer-meta{margin-top:10px;font-size:13px;color:#8A8CA3}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 26px;font-size:13px;color:#8A8CA3;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-primary);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .2s ease;z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--c-primary-deep)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--section-y:80px}
  .banner{padding:64px 0 56px}
  .split{gap:36px}
}
@media (max-width:1023px){
  :root{--section-y:64px}
  .brand-note{display:none}
  .split{grid-template-columns:1fr}
  .split-media img{height:300px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .brand-actions .btn-sm{padding:8px 12px;font-size:13px}
  .channel-bar{
    position:fixed;top:0;left:0;right:0;bottom:0;background:#fff;z-index:80;
    transform:translateX(-100%);transition:transform .3s ease;overflow-y:auto;
    border-bottom:0;padding:0;box-shadow:var(--shadow-3);
  }
  .channel-bar.is-open{transform:none}
  .drawer-top{
    display:flex;align-items:center;justify-content:space-between;padding:18px 16px;
    border-bottom:1px solid var(--c-line);position:sticky;top:0;background:#fff;z-index:2;
  }
  .drawer-top strong{font-size:16px}
  .drawer-close{
    display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--c-line);
    border-radius:10px;background:#fff;font-size:22px;line-height:1;color:var(--c-ink);cursor:pointer;
  }
  .channel-bar .grid-container{padding:8px 16px 24px}
  .channel-list{flex-direction:column;align-items:stretch;gap:4px;overflow:visible}
  .channel-list a{padding:16px 8px;font-size:17px;border-bottom:1px solid var(--c-line);display:block}
  .channel-list a::after{display:none}
  .channel-list a.is-active{color:var(--c-primary);background:var(--c-primary-soft);border-radius:10px;padding-left:14px}
  .subbar-wrap{top:64px}
}
@media (max-width:767px){
  :root{--section-y:48px}
  body{font-size:15.5px}
  .banner{padding:48px 0 44px;margin-top:16px}
  .banner-stats{gap:28px;margin-top:28px}
  .stat-num{font-size:26px}
  .brand-text{font-size:15px}
  .brand-actions .btn-outline{display:none}
  .card{padding:22px 20px}
  .card-media{margin:-22px -20px 18px}
  .cta-row{flex-direction:column;align-items:flex-start;gap:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .faq-a-inner{padding-left:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .brand-mark{width:36px;height:36px;font-size:12px}
  .brand-text{font-size:14px}
  .banner h1{font-size:26px}
  .section-title{font-size:22px}
  .card h3{font-size:18px}
  .btn{padding:12px 18px;font-size:14px}
}

/* roulang page: category3 */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-orange:#FF7A45;
  --c-success:#18B981;
  --c-warn:#F5A524;
  --c-danger:#EF4444;
  --bg-page:#F5F5FA;
  --bg-card:#FFFFFF;
  --bg-dark:#121223;
  --c-ink:#16172A;
  --c-muted:#5A5C72;
  --c-line:#E6E6F0;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;background:var(--bg-page);color:var(--c-ink);
  font-family:var(--font-sans);font-size:16.5px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease}
a:hover{color:var(--c-primary-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--c-ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-primary);color:#fff}

.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;line-height:1;text-align:center;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%;display:flex}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(106,76,255,.24)}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 10px rgba(106,76,255,.22)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{border-color:rgba(255,255,255,.68);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:120;background:#fff;transition:box-shadow .22s ease}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(18,18,35,.09)}
.brand-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.brand-row{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;flex-shrink:0}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:10px;background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-size:12px;font-family:var(--font-mono);letter-spacing:.5px;flex-shrink:0;
}
.brand-text{font-size:17px;letter-spacing:-.01em}
.brand-note{
  flex:1;min-width:0;color:var(--c-muted);font-size:13px;line-height:1.5;
  padding-left:18px;border-left:1px solid var(--c-line);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.brand-actions{display:flex;gap:10px;margin-left:auto;flex-shrink:0}

.channel-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.channel-list{display:flex;gap:30px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.channel-list::-webkit-scrollbar{display:none}
.channel-list a{
  display:inline-block;padding:14px 0;font-size:15px;color:var(--c-muted);
  border-bottom:2px solid transparent;white-space:nowrap;font-weight:500;
}
.channel-list a:hover{color:var(--c-primary)}
.channel-list a.is-active{color:var(--c-primary);font-weight:700;border-bottom-color:var(--c-primary)}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;
  border-radius:10px;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:all .2s ease}
.drawer-top{display:none;align-items:center;justify-content:space-between;padding:0 0 16px;border-bottom:1px solid var(--c-line);margin-bottom:12px}
.drawer-top strong{font-size:16px}
.drawer-close{background:none;border:0;font-size:28px;line-height:1;color:var(--c-muted);padding:0 4px}

/* ============ 面包屑 ============ */
.breadcrumb-bar{background:#fff;border-bottom:1px solid var(--c-line)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:13px;color:var(--c-muted)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:#C7C8D8}
.breadcrumb a{color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-ink);font-weight:600}

/* ============ Hero ============ */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:76px 0 72px;
  background:linear-gradient(120deg,#121223 0%,#231a4c 52%,#3b2a8a 100%);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;opacity:.20;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-hero .grid-container{position:relative;z-index:2}
.hero-grid{align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(201,242,77,.16);color:var(--c-accent);
  font-size:13px;font-weight:600;letter-spacing:.02em;margin-bottom:20px;
}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,48px);line-height:1.24;margin-bottom:18px;letter-spacing:-.02em;
}
.page-hero h1 em{font-style:normal;color:var(--c-accent)}
.hero-sub{color:rgba(255,255,255,.82);font-size:17px;line-height:1.8;max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.16)}
.hero-metrics li{min-width:96px}
.hero-metrics .num{display:block;font-family:var(--font-mono);font-size:26px;font-weight:700;color:var(--c-accent);line-height:1.2}
.hero-metrics .lab{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-top:4px}

.hero-panel{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:18px;padding:24px;backdrop-filter:blur(6px);
}
.hero-panel h2{font-size:16px;color:#fff;margin-bottom:16px;font-weight:600}
.zone-list li{
  display:flex;align-items:center;gap:14px;padding:12px 0;
  border-bottom:1px dashed rgba(255,255,255,.16);
}
.zone-list li:last-child{border-bottom:0}
.zone-list .idx{font-family:var(--font-mono);font-size:13px;color:var(--c-accent);width:26px;flex-shrink:0}
.zone-list .name{font-size:15px;color:rgba(255,255,255,.92);font-weight:600}
.zone-list .desc{font-size:13px;color:rgba(255,255,255,.6);margin-left:auto;text-align:right}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-pad) 0}
.section-alt{background:#fff}
.section-dark{background:var(--bg-dark);color:#fff}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .kicker{
  display:inline-block;font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--c-primary);letter-spacing:.08em;margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,2.6vw,32px);position:relative;padding-left:16px;margin-bottom:14px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;width:4px;height:24px;border-radius:2px;background:var(--c-accent);
}
.section-head .lead{color:var(--c-muted);font-size:16px}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head .lead{color:rgba(255,255,255,.68)}
.section-dark .section-head .kicker{color:var(--c-accent)}

/* ============ 左主区 + 粘性栏 ============ */
.split-layout{align-items:flex-start}
.split-main{max-width:100%}
.feature-row{
  display:flex;gap:28px;align-items:center;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--radius-card);padding:24px;margin-bottom:24px;box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.feature-row:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD6FF}
.feature-row.reverse{flex-direction:row-reverse}
.feature-row figure{margin:0;flex:0 0 220px;border-radius:var(--radius-img);overflow:hidden;background:var(--c-primary-soft)}
.feature-row figure img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s ease}
.feature-row:hover figure img{transform:scale(1.03)}
.feature-body{flex:1;min-width:0}
.feature-body h3{font-size:20px;margin-bottom:10px}
.feature-body p{color:var(--c-muted);font-size:15.5px;margin-bottom:12px}
.inline-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:12.5px;font-weight:600;
}
.tag-lime{background:rgba(201,242,77,.28);color:#4A6410}
.tag-line{background:#F1F1F7;color:var(--c-muted)}

.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mini-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);padding:24px;
  box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.mini-card .ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:17px;margin-bottom:16px;
}
.mini-card h3{font-size:18px;margin-bottom:8px}
.mini-card p{color:var(--c-muted);font-size:15px}

.sticky-box{position:sticky;top:124px}
.aside-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;margin-bottom:20px;box-shadow:var(--shadow-1);
}
.aside-card h3{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.aside-card h3 i{color:var(--c-primary)}
.check-list li{
  position:relative;padding:0 0 0 26px;margin-bottom:14px;font-size:14.5px;color:var(--c-muted);line-height:1.7;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:2px;background:var(--c-accent);
}
.aside-cta{background:linear-gradient(160deg,#F7F5FF,#EDE9FF);border-color:#DCD6FF}
.aside-cta p{font-size:14.5px;color:var(--c-muted);margin-bottom:16px}
.aside-cta .btn{margin-bottom:10px}
.aside-cta .btn:last-child{margin-bottom:0}

/* ============ 手风琴 ============ */
.acc-list{max-width:920px;margin:0 auto}
.acc-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.acc-item.is-open{border-color:#D8D1FF;box-shadow:var(--shadow-2)}
.acc-head{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:19px 24px 19px 22px;background:none;border:0;
  font-size:16.5px;font-weight:600;color:var(--c-ink);line-height:1.5;
  border-left:3px solid transparent;transition:all .2s ease;
}
.acc-head:hover{background:#FAFAFE;color:var(--c-primary)}
.acc-item.is-open .acc-head{border-left-color:var(--c-accent);color:var(--c-primary)}
.acc-head .q{
  font-family:var(--font-mono);font-size:13px;color:var(--c-muted);flex-shrink:0;width:26px;
}
.acc-head .txt{flex:1}
.acc-head .chev{color:var(--c-muted);font-size:13px;transition:transform .22s ease;flex-shrink:0}
.acc-item.is-open .acc-head .chev{transform:rotate(90deg);color:var(--c-primary)}
.acc-body{display:none;padding:0 24px 22px 72px;color:var(--c-muted);font-size:15.5px}
.acc-item.is-open .acc-body{display:block;animation:accIn .22s ease}
@keyframes accIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ============ 流程 ============ */
.steps{position:relative}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.steps-grid::before{
  content:"";position:absolute;top:26px;left:8%;right:8%;border-top:1px dashed #D5D5E4;z-index:0;
}
.step{position:relative;z-index:1;text-align:center;padding:0 6px}
.step .dot{
  width:52px;height:52px;margin:0 auto 18px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:16px;font-weight:700;
  box-shadow:0 8px 20px rgba(106,76,255,.14);
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--c-muted)}

/* ============ FAQ 卡片 ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.faq-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.faq-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD6FF}
.faq-card h3{
  font-size:17px;margin-bottom:10px;display:flex;gap:10px;align-items:flex-start;line-height:1.5;
}
.faq-card h3 i{color:var(--c-primary);font-size:15px;margin-top:4px;flex-shrink:0}
.faq-card p{font-size:15px;color:var(--c-muted)}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(120deg,#6A4CFF 0%,#4B2FD6 100%);
  color:#fff;padding:64px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.82);font-size:16px;max-width:600px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-dark);color:#B9BACE;padding:64px 0 0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,242,77,.6),rgba(106,76,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:16px}
.footer-col p{font-size:14.5px;line-height:1.85;color:#9A9CB4;margin-bottom:12px}
.footer-meta{font-size:13.5px;color:#83859E}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{color:#B9BACE;font-size:14.5px}
.footer-col ul a:hover{color:var(--c-accent)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0;font-size:13.5px;color:#83859E;
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;border:0;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:90;
  box-shadow:var(--shadow-2);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--c-primary-deep)}

/* ============ 响应式 ============ */
@media (min-width:1400px){
  .grid-container{max-width:1280px}
}
@media (max-width:1199px){
  :root{--sec-pad:80px}
  .feature-row figure{flex:0 0 190px}
}
@media (max-width:1023px){
  :root{--sec-pad:64px}
  .brand-note{display:none}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .steps-grid::before{display:none}
  .sticky-box{position:static;margin-top:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .hero-panel{margin-top:32px}
}
@media (max-width:767px){
  :root{--sec-pad:48px}
  body{font-size:16px}
  .grid-container{padding-left:16px;padding-right:16px}
  .brand-row{height:60px;gap:12px}
  .brand-text{font-size:15.5px}
  .brand-actions .btn-outline{display:none}
  .nav-toggle{display:flex}
  .channel-bar{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    transform:translateX(102%);transition:transform .28s ease;
    background:#fff;z-index:200;padding:20px;overflow-y:auto;
    box-shadow:var(--shadow-3);border-bottom:0;
  }
  body.drawer-open .channel-bar{transform:translateX(0)}
  body.drawer-open{overflow:hidden}
  .drawer-top{display:flex}
  .channel-list{flex-direction:column;gap:0}
  .channel-list a{
    display:block;padding:16px 4px;font-size:16px;border-bottom:1px solid var(--c-line);
    border-left:3px solid transparent;border-bottom-width:0;
  }
  .channel-list a.is-active{border-left-color:var(--c-primary);background:var(--c-primary-soft);padding-left:14px}
  .page-hero{padding:52px 0 48px}
  .hero-metrics{gap:20px}
  .hero-metrics li{min-width:80px}
  .feature-row,.feature-row.reverse{flex-direction:column;align-items:stretch}
  .feature-row figure{flex:0 0 auto}
  .mini-grid,.faq-grid{grid-template-columns:1fr}
  .acc-body{padding-left:24px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:16px}
  .hero-metrics .num{font-size:22px}
  .acc-head{padding:16px 18px;font-size:15.5px}
  .section-head h2{font-size:22px}
}

/* roulang page: category4 */
:root{
  --c-primary:#6A4CFF;
  --c-primary-deep:#4B2FD6;
  --c-primary-soft:#EDE9FF;
  --c-accent:#C9F24D;
  --c-orange:#FF7A45;
  --c-success:#18B981;
  --c-warn:#F5A524;
  --c-error:#EF4444;
  --bg-page:#F5F5FA;
  --c-surface:#FFFFFF;
  --c-dark:#121223;
  --c-ink:#16172A;
  --c-muted:#5A5C72;
  --c-line:#E6E6F0;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-1:0 1px 2px rgba(18,18,35,.06);
  --shadow-2:0 12px 28px rgba(106,76,255,.16);
  --shadow-3:0 20px 48px rgba(18,18,35,.18);
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:88px;
  --font-sans:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono",Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-page);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;}
a:hover{color:var(--c-primary-deep);}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:4px;}

/* ---------- 布局容器与栅格 ---------- */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;width:100%;}
.cell.small-12{width:100%;}
@media (min-width:768px){
  .cell.medium-6{width:50%;}
  .cell.medium-4{width:33.3333%;}
}
@media (min-width:1024px){
  .cell.large-4{width:33.3333%;}
  .cell.large-5{width:41.6667%;}
  .cell.large-6{width:50%;}
  .cell.large-7{width:58.3333%;}
  .cell.large-8{width:66.6667%;}
}
@media (min-width:1400px){
  .grid-container{max-width:1280px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.94);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--c-line);transition:box-shadow .24s ease;}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(18,18,35,.08);}
.brand-bar{height:64px;display:flex;align-items:center;}
.brand-row{display:flex;align-items:center;gap:20px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto;}
.brand:hover{color:var(--c-ink);}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--c-primary),#8E76FF);color:#fff;font-family:var(--font-mono);font-size:14px;font-weight:700;letter-spacing:.5px;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.brand-note{flex:1 1 auto;font-size:13px;color:var(--c-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:40px;background:#fff;border:1px solid var(--c-line);border-radius:10px;cursor:pointer;padding:0 10px;}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--c-ink);}
.nav-toggle span:nth-child(2){width:70%;}

.channel-bar{border-top:1px solid var(--c-line);background:#fff;}
.drawer-top{display:none;}
.channel-list{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none;}
.channel-list::-webkit-scrollbar{display:none;}
.channel-list li{flex:0 0 auto;}
.channel-list a{display:inline-block;position:relative;padding:14px 0 12px;font-size:15px;color:var(--c-muted);white-space:nowrap;border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease;}
.channel-list a:hover{color:var(--c-primary);}
.channel-list a.is-active{color:var(--c-primary);font-weight:600;border-bottom-color:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;font-size:15px;font-weight:600;border-radius:var(--radius-btn);border:1.5px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;line-height:1.2;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none;}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 4px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9BACE;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb [aria-current="page"]{color:var(--c-ink);font-weight:600;}

/* ---------- 页首区 ---------- */
.page-head{padding:18px 0 40px;}
.page-head-grid{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start;}
.page-head-main{flex:1 1 560px;min-width:0;}
.page-head-side{flex:0 1 340px;min-width:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;border-radius:999px;background:var(--c-primary-soft);color:var(--c-primary-deep);font-size:13px;font-weight:600;letter-spacing:.3px;}
.page-head h1{margin:18px 0 14px;font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.4px;font-weight:800;}
.lede{font-size:17px;color:var(--c-muted);max-width:720px;margin-bottom:22px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;background:#fff;border:1px solid var(--c-line);color:var(--c-muted);font-size:13px;}
.tag i{color:var(--c-primary);font-size:12px;}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px;}

.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:24px;}
.side-card h2{font-size:18px;margin-bottom:14px;}
.side-card ul li{display:flex;gap:10px;font-size:14px;color:var(--c-muted);padding:9px 0;border-bottom:1px dashed var(--c-line);}
.side-card ul li:last-child{border-bottom:0;}
.side-card .num{font-family:var(--font-mono);color:var(--c-primary);font-weight:700;font-size:13px;padding-top:3px;}
.side-card .side-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);display:flex;align-items:center;gap:8px;}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--c-success);display:inline-block;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .marker{display:block;width:4px;height:24px;border-radius:2px;background:var(--c-accent);margin-bottom:14px;}
.section-head h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.3px;}
.section-head p{margin-top:12px;color:var(--c-muted);font-size:16px;max-width:640px;}
.section-head.with-aside{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;max-width:none;}
.more-link{font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap;}
.more-link:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- 卡片瀑布 ---------- */
.waterfall{column-count:3;column-gap:24px;}
@media (max-width:1023px){.waterfall{column-count:2;}}
@media (max-width:639px){.waterfall{column-count:1;}}
.q-card{break-inside:avoid;page-break-inside:avoid;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);padding:0;margin:0 0 24px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative;}
.q-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D8D2FF;}
.q-card:hover::before{transform:scaleX(1);}
.q-card .q-body{padding:22px 24px 24px;}
.q-card h3{font-size:19px;line-height:1.45;margin-bottom:10px;}
.q-card p{font-size:14.5px;color:var(--c-muted);}
.q-card .thumb{position:relative;padding-top:56%;background:var(--c-primary-soft);overflow:hidden;}
.q-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.q-card .q-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.2px;}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.badge-neutral{background:#F0F1F6;color:var(--c-muted);}
.badge-accent{background:rgba(201,242,77,.32);color:#4C6B00;}
.badge-warn{background:rgba(245,165,36,.16);color:#9A6206;}
.q-steps{margin-top:16px;padding-top:16px;border-top:1px dashed var(--c-line);}
.q-steps li{display:flex;gap:10px;font-size:14px;color:var(--c-ink);padding:5px 0;}
.q-steps .n{font-family:var(--font-mono);font-size:12px;color:var(--c-primary);font-weight:700;padding-top:3px;}

/* ---------- 流程 ---------- */
.flow{display:flex;flex-wrap:wrap;gap:20px;position:relative;}
.flow-step{flex:1 1 220px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);position:relative;transition:transform .2s ease,box-shadow .2s ease;}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.flow-step .step-no{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--c-primary);letter-spacing:1px;}
.flow-step h3{font-size:18px;margin:12px 0 8px;}
.flow-step p{font-size:14px;color:var(--c-muted);}
.flow-line{position:absolute;top:38px;left:4%;right:4%;border-top:2px dashed var(--c-line);z-index:0;}
@media (max-width:767px){.flow{flex-direction:column;}.flow-line{display:none;}}

/* ---------- 提示带 ---------- */
.notice{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-primary);border-radius:12px;padding:18px 22px;box-shadow:var(--shadow-1);}
.notice i{color:var(--c-primary);font-size:18px;padding-top:4px;}
.notice strong{display:block;font-size:15px;margin-bottom:4px;}
.notice p{font-size:14px;color:var(--c-muted);}

/* ---------- 数据带 ---------- */
.data-band{background:var(--c-dark);color:#fff;border-radius:20px;padding:44px 40px;}
.data-band .grid-x>.cell{padding-top:12px;padding-bottom:12px;}
.data-item{border-left:2px solid rgba(255,255,255,.14);padding-left:20px;}
.data-item .val{font-family:var(--font-mono);font-size:clamp(30px,4vw,40px);font-weight:700;color:var(--c-accent);line-height:1.1;}
.data-item .val small{font-size:14px;color:#B9BACE;font-family:var(--font-sans);font-weight:500;margin-left:6px;}
.data-item .lab{font-size:14px;color:#B9BACE;margin-top:8px;}
.data-band h2{font-size:24px;margin-bottom:8px;}
.data-band .sub{color:#B9BACE;font-size:15px;max-width:640px;margin-bottom:22px;}

/* ---------- FAQ 手风琴 ---------- */
.accordion{border:1px solid var(--c-line);border-radius:var(--radius-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-1);}
.accordion-item+.accordion-item{border-top:1px solid var(--c-line);}
.accordion-title{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:#fff;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--c-ink);cursor:pointer;position:relative;transition:background-color .18s ease,color .18s ease;}
.accordion-title::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-accent);transform:scaleY(0);transform-origin:top;transition:transform .22s ease;}
.accordion-title i{color:var(--c-primary);font-size:14px;transition:transform .22s ease;}
.accordion-title:hover{background:#FAFAFF;color:var(--c-primary);}
.accordion-item.is-open .accordion-title{color:var(--c-primary);}
.accordion-item.is-open .accordion-title::before{transform:scaleY(1);}
.accordion-item.is-open .accordion-title i{transform:rotate(90deg);}
.accordion-content{max-height:0;overflow:hidden;transition:max-height .28s ease,opacity .28s ease;opacity:0;}
.accordion-item.is-open .accordion-content{opacity:1;}
.accordion-content .inner{padding:0 24px 22px 24px;font-size:15px;color:var(--c-muted);max-width:760px;}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--c-primary),var(--c-primary-deep));border-radius:20px;padding:48px 40px;color:#fff;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;}
.cta-band h2{font-size:clamp(22px,3vw,30px);line-height:1.35;max-width:620px;}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.82);font-size:15px;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.btn-light{background:#fff;color:var(--c-primary-deep);}
.btn-light:hover{background:#F1EEFF;color:var(--c-primary-deep);transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.18);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#B9BACE;margin-top:88px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--c-primary),var(--c-accent),transparent);}
.footer-grid{display:flex;flex-wrap:wrap;gap:32px;padding:64px 0 40px;}
.footer-col{flex:1 1 220px;min-width:0;}
.footer-col:first-child{flex:1 1 320px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.85;}
.footer-meta{margin-top:10px;font-size:13px;color:#8E90A6;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{color:#B9BACE;font-size:14px;transition:color .18s ease;}
.footer-col ul a:hover{color:var(--c-accent);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8E90A6;}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--c-primary);color:#fff;border:0;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .24s ease,transform .24s ease,visibility .24s ease,background-color .18s ease;z-index:80;}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{background:var(--c-primary-deep);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .section{padding:64px 0;}
  .data-band{padding:36px 28px;}
  .cta-band{padding:36px 28px;}
}
@media (max-width:900px){
  .brand-note{display:none;}
  .brand-actions{display:none;}
  .nav-toggle{display:flex;}
  .channel-bar{position:fixed;top:0;left:0;right:0;bottom:0;z-index:120;background:#fff;transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;padding:0 20px 32px;border-top:0;}
  .channel-bar.is-open{transform:translateX(0);}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--c-line);margin-bottom:8px;}
  .drawer-top strong{font-size:16px;}
  .drawer-close{background:none;border:0;font-size:28px;line-height:1;color:var(--c-muted);cursor:pointer;}
  .channel-list{flex-direction:column;gap:0;overflow:visible;}
  .channel-list a{display:block;width:100%;padding:16px 0;font-size:17px;border-bottom:1px solid var(--c-line);}
  .channel-list a.is-active{color:var(--c-primary);border-bottom-color:var(--c-line);}
  .channel-list a.is-active::after{content:"当前";float:right;font-size:12px;font-weight:500;color:var(--c-primary);}
}
@media (max-width:767px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:48px 0;}
  .page-head{padding:8px 0 28px;}
  .lede{font-size:16px;}
  .side-card{padding:20px;}
  .footer-grid{padding:48px 0 32px;gap:26px;}
  .footer-col:first-child{flex:1 1 100%;}
  .footer-col{flex:1 1 calc(50% - 13px);}
  .cta-band{border-radius:16px;}
  .data-band{border-radius:16px;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:480px){
  .brand-text{font-size:15px;}
  .footer-col{flex:1 1 100%;}
  .page-head-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}