/* roulang page: index */
:root{
  --c-primary:#2E5BE6;
  --c-primary-700:#1E4FC2;
  --c-primary-50:#EEF3FF;
  --c-accent:#E85C7A;
  --c-accent-50:#FDEEF2;
  --c-success:#22A06B;
  --c-warn:#E8A33D;
  --c-text:#16233A;
  --c-sub:#5A6A85;
  --c-muted:#8A98AE;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F8FC;
  --c-border:#E3E9F2;
  --shadow-card:0 8px 24px rgba(24,45,90,.06);
  --shadow-hover:0 14px 32px rgba(24,45,90,.10);
  --r-lg:16px;
  --r-md:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.site-container{padding:0 32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 18px rgba(24,45,90,.07)}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;flex:none;border-radius:12px;background:var(--c-primary);display:grid;place-items:center;color:#fff;box-shadow:0 6px 14px rgba(46,91,230,.28)}
.brand-text{font-size:15.5px;font-weight:700;letter-spacing:.2px;line-height:1.2;white-space:nowrap}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.4px;margin-top:2px}
.nav-links{display:none;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 14px;border-radius:10px;font-size:15px;color:var(--c-sub);transition:color .18s ease,background .18s ease}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-50)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-toggle{width:42px;height:42px;border-radius:12px;border:1px solid var(--c-border);display:grid;place-items:center;color:var(--c-sub);background:#fff}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
@media(min-width:1024px){.nav-links{display:flex}.nav-toggle{display:none}}
.drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:80;transform:translateX(102%);transition:transform .26s ease;box-shadow:-12px 0 40px rgba(24,45,90,.14);padding:20px;display:flex;flex-direction:column;gap:6px}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(22,35,58,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .26s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-link{padding:13px 14px;border-radius:12px;font-size:15.5px;color:var(--c-sub)}
.drawer-link:hover,.drawer-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.drawer .btn{margin-top:8px;width:100%}

/* ---------- buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-md);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,border-color .18s ease}
.btn-lg{height:48px;padding:0 28px;font-size:15.5px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(46,91,230,.22)}
.btn-primary:hover{background:var(--c-primary-700);box-shadow:0 10px 22px rgba(46,91,230,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(46,91,230,.2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50)}
.btn-light{background:#fff;color:var(--c-primary-700);border-color:#fff}
.btn-light:hover{background:#F2F6FF}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;font-size:12px;border-radius:999px;font-weight:600;line-height:1.6}
.badge-primary{background:var(--c-primary-50);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-50);color:var(--c-accent)}
.badge-soft{background:#EFF2F7;color:var(--c-sub)}
.badge-success{background:#E8F7F0;color:var(--c-success)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.3px;color:var(--c-primary);background:var(--c-primary-50);border-radius:999px;padding:5px 13px}
.link-more{color:var(--c-primary);font-weight:600;font-size:14px;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;transition:color .18s ease}
.link-more:hover{color:var(--c-accent)}

/* ---------- sections ---------- */
.section{padding:48px 0}
@media(min-width:1024px){.section{padding:80px 0}}
.section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{max-width:760px;margin-bottom:28px}
@media(min-width:1024px){.section-head{margin-bottom:40px}}
.h2{font-size:26px;font-weight:700;line-height:1.3;margin:14px 0 10px;letter-spacing:-.2px}
@media(min-width:1024px){.h2{font-size:31px}}
.h3{font-size:18px;font-weight:600;line-height:1.45}
.section-desc{color:var(--c-sub);font-size:15.5px;line-height:1.85}
.card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}
.grid-3{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.grid-3{grid-template-columns:repeat(2,1fr);gap:22px}}
@media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#F7F9FE;border-bottom:1px solid var(--c-border)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/a3e027991ded7bc1.webp') center/cover no-repeat;opacity:.13}
.hero-grid{position:relative;display:grid;gap:34px;padding:44px 0 40px}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;padding:68px 0 56px;align-items:center}}
.hero h1{font-size:30px;line-height:1.22;font-weight:700;margin:16px 0 12px;letter-spacing:-.4px}
@media(min-width:1024px){.hero h1{font-size:44px;line-height:1.16}}
.hero-lead{font-size:17px;font-weight:600;color:var(--c-primary-700);margin-bottom:14px}
.hero-text{color:var(--c-sub);font-size:15.5px;line-height:1.9;max-width:640px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-metrics{position:relative;display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:32px}
@media(min-width:768px){.hero-metrics{grid-template-columns:repeat(4,1fr);gap:20px}}
.metric-mini{background:#fff;border:1px solid var(--c-border);border-radius:14px;padding:14px 16px;box-shadow:var(--shadow-card)}
.metric-mini strong{display:block;font-size:20px;font-weight:700;color:var(--c-primary-700);font-variant-numeric:tabular-nums}
.metric-mini span{font-size:12.5px;color:var(--c-muted)}
.quiz-card{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:20px;box-shadow:0 18px 44px rgba(24,45,90,.10);padding:22px}
.quiz-title{font-size:16px;font-weight:700;margin-bottom:4px}
.quiz-sub{font-size:13px;color:var(--c-muted);margin-bottom:16px}
.quiz-q{font-size:13.5px;font-weight:600;color:var(--c-text);margin:14px 0 8px}
.quiz-opts{display:flex;flex-wrap:wrap;gap:8px}
.quiz-opt{padding:7px 14px;border-radius:999px;border:1px solid var(--c-border);background:#fff;font-size:13px;color:var(--c-sub);transition:.18s ease}
.quiz-opt:hover{border-color:var(--c-primary);color:var(--c-primary)}
.quiz-opt.is-on{background:var(--c-primary-50);border-color:var(--c-primary);color:var(--c-primary);font-weight:600}
.quiz-result{margin-top:18px;padding:14px 16px;border-radius:14px;background:var(--c-primary-50);border:1px dashed #BFD0F5}
.quiz-result b{color:var(--c-primary-700)}
.quiz-result p{font-size:13px;color:var(--c-sub);margin-top:4px}
.quiz-card .btn{width:100%;margin-top:16px}
.float-chip{position:absolute;left:-10px;bottom:74px;background:#fff;border:1px solid var(--c-border);border-radius:12px;box-shadow:var(--shadow-hover);padding:8px 14px;font-size:12.5px;color:var(--c-sub);display:none}
@media(min-width:1024px){.float-chip{display:block}}
.float-chip b{color:var(--c-accent);font-variant-numeric:tabular-nums}

/* ---------- metrics board ---------- */
.metric-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-card);position:relative;transition:transform .18s ease,box-shadow .18s ease}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.metric-card strong{display:block;font-size:32px;line-height:1.15;font-weight:700;color:var(--c-text);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.metric-card em{font-style:normal;font-size:14px;color:var(--c-primary);font-weight:600;margin-left:2px}
.metric-card p{font-size:13px;color:var(--c-muted);margin-top:6px;line-height:1.6}
.trend{position:absolute;top:18px;right:18px;color:var(--c-success)}

/* ---------- pain ---------- */
.pain-layout{display:grid;gap:28px}
@media(min-width:1024px){.pain-layout{grid-template-columns:5fr 7fr;gap:48px;align-items:start}}
.pain-item{display:flex;gap:14px;padding:18px;background:#fff;border:1px solid var(--c-border);border-radius:14px;box-shadow:var(--shadow-card)}
.pain-item i{flex:none;width:34px;height:34px;border-radius:10px;background:var(--c-accent-50);color:var(--c-accent);display:grid;place-items:center;font-style:normal;font-weight:700;font-size:14px}
.pain-item h3{font-size:15.5px;font-weight:600;margin-bottom:4px}
.pain-item p{font-size:14px;color:var(--c-sub);line-height:1.75}

/* ---------- feature matrix ---------- */
.feature-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:24px;transition:transform .18s ease,box-shadow .18s ease}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.feature-card .idx{font-size:12px;font-weight:700;color:var(--c-muted);letter-spacing:1px;font-variant-numeric:tabular-nums}
.feature-ico{width:42px;height:42px;border-radius:12px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;margin:12px 0 14px}
.feature-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--c-sub);line-height:1.8}
.feature-tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--c-primary);background:var(--c-primary-50);border-radius:999px;padding:3px 10px}
.feature-wide{background:linear-gradient(135deg,#2E5BE6 0%,#2E5BE6 100%);border-color:#2E5BE6;color:#fff}
.feature-wide .idx{color:rgba(255,255,255,.7)}
.feature-wide .feature-ico{background:rgba(255,255,255,.16);color:#fff}
.feature-wide p{color:rgba(255,255,255,.86)}
.feature-wide .feature-tag{background:rgba(255,255,255,.18);color:#fff}
.feature-wide:hover{box-shadow:0 18px 40px rgba(46,91,230,.28)}
@media(min-width:1024px){.feature-wide{grid-column:span 2}}

/* ---------- scenarios ---------- */
.scene-card{display:grid;grid-template-columns:1fr;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.scene-card img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover}
.scene-body{padding:20px 22px}
.scene-body h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.scene-body p{font-size:14px;color:var(--c-sub);line-height:1.8}
@media(min-width:640px){.scene-card{grid-template-columns:200px 1fr}.scene-card img{aspect-ratio:auto;min-height:100%}}

/* ---------- compare ---------- */
.compare{display:grid;gap:18px}
@media(min-width:900px){.compare{grid-template-columns:1fr 1fr;gap:24px}}
.compare-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);overflow:hidden}
.compare-head{padding:20px 22px;border-bottom:1px solid var(--c-border);background:var(--c-bg-soft)}
.compare-head.vip{background:var(--c-primary-50);border-bottom-color:#CFDDF8}
.compare-head h3{font-size:18px;font-weight:700}
.compare-head p{font-size:13px;color:var(--c-sub);margin-top:4px}
.compare-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 22px;border-bottom:1px solid #EFF3F9;font-size:14px;transition:background .18s ease}
.compare-row:last-child{border-bottom:0}
.compare-row:hover{background:#F8FAFF}
.compare-row span:last-child{color:var(--c-sub);font-weight:600;font-variant-numeric:tabular-nums}
.compare-row .is-yes{color:var(--c-success)}
.compare-row .is-no{color:var(--c-muted)}

/* ---------- steps ---------- */
.step-wrap{display:grid;gap:20px;position:relative}
@media(min-width:900px){.step-wrap{grid-template-columns:repeat(3,1fr);gap:24px}}
.step-card{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-card)}
.step-no{width:36px;height:36px;border-radius:50%;border:2px solid var(--c-primary);color:var(--c-primary);display:grid;place-items:center;font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;margin-bottom:14px;background:#fff}
.step-card h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.step-card p{font-size:14px;color:var(--c-sub);line-height:1.8}

/* ---------- timeline ---------- */
.timeline{display:grid;gap:18px;margin-top:8px}
@media(min-width:900px){.timeline{grid-template-columns:repeat(4,1fr);gap:20px}}
.tl-item{position:relative;background:#fff;border:1px solid var(--c-border);border-radius:14px;padding:20px;box-shadow:var(--shadow-card)}
.tl-item::before{content:"";position:absolute;top:-1px;left:20px;width:26px;height:3px;border-radius:3px;background:var(--c-primary)}
.tl-ver{font-size:12.5px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:.5px}
.tl-item h3{font-size:15px;font-weight:600;margin:8px 0 6px;line-height:1.5}
.tl-item p{font-size:13.5px;color:var(--c-sub);line-height:1.75}

/* ---------- cms posts ---------- */
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.post-thumb{display:block;overflow:hidden;aspect-ratio:16/10;background:var(--c-bg-soft)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.post-title{font-size:16.5px;font-weight:600;line-height:1.55;margin:10px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--c-primary)}
.post-desc{font-size:13.5px;color:var(--c-sub);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px;font-size:12.5px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.empty-state{text-align:center;padding:52px 20px;background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-lg);color:var(--c-muted);font-size:14.5px}
.empty-state svg{margin:0 auto 12px;color:#C3CFE3}

/* ---------- safeguards ---------- */
.safe-item{display:flex;gap:14px;align-items:flex-start;padding:18px 20px;background:#fff;border:1px solid var(--c-border);border-radius:14px}
.safe-item i{flex:none;width:36px;height:36px;border-radius:10px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;font-style:normal}
.safe-item h3{font-size:15px;font-weight:600;margin-bottom:4px}
.safe-item p{font-size:13.5px;color:var(--c-sub);line-height:1.7}

/* ---------- quick answers ---------- */
.quick-grid{display:grid;gap:14px}
@media(min-width:768px){.quick-grid{grid-template-columns:repeat(2,1fr)}}
.quick-pill{background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:14px 22px;display:flex;gap:12px;align-items:baseline;transition:background .18s ease,border-color .18s ease}
.quick-pill:hover{background:#F8FAFF;border-color:#CFDDF8}
.quick-pill b{font-size:14.5px;font-weight:600;flex:none;color:var(--c-text)}
.quick-pill span{font-size:13.5px;color:var(--c-sub);line-height:1.6}

/* ---------- audience ---------- */
.aud-grid{display:grid;gap:20px}
@media(min-width:900px){.aud-grid{grid-template-columns:1fr 1fr;gap:24px}}
.aud-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-card)}
.aud-card h3{font-size:17px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aud-card li{position:relative;padding-left:22px;font-size:14px;color:var(--c-sub);line-height:1.8;margin-bottom:10px}
.aud-card li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--c-success)}
.aud-card.muted li::before{background:#C3CFE3}

/* ---------- testimonials ---------- */
.wall{columns:1;column-gap:20px}
@media(min-width:768px){.wall{columns:2;column-gap:22px}}
@media(min-width:1024px){.wall{columns:3;column-gap:24px}}
.quote{break-inside:avoid;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-card);margin-bottom:20px;transition:transform .18s ease,box-shadow .18s ease}
.quote:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.quote-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.avatar{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:700;font-size:14px;color:#fff}
.quote-head b{font-size:13.5px;font-weight:600}
.quote-head em{font-style:normal;font-size:12px;color:var(--c-muted);display:block}
.quote p{font-size:14px;color:var(--c-sub);line-height:1.8}
.stars{display:flex;gap:3px;margin-top:12px}
.stars i{width:8px;height:8px;border-radius:2px;background:var(--c-primary);display:block}
.stars i.off{background:#DDE5F2}

/* ---------- category entry ---------- */
.cat-card{display:grid;gap:0;background:#fff;border:1px solid var(--c-border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-card)}
@media(min-width:900px){.cat-card{grid-template-columns:1fr 1fr}}
.cat-card img{width:100%;height:100%;min-height:220px;object-fit:cover}
.cat-body{padding:28px 26px}
.cat-body h3{font-size:21px;font-weight:700;margin:12px 0 10px}
.cat-body p{font-size:14.5px;color:var(--c-sub);line-height:1.85;margin-bottom:18px}

/* ---------- faq ---------- */
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color .18s ease,background .18s ease}
.faq-item.open{background:var(--c-primary-50);border-color:#CFDDF8}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--c-text);position:relative}
.faq-item.open .faq-q{color:var(--c-primary-700)}
.faq-item.open .faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--c-primary)}
.faq-icon{flex:none;transition:transform .22s ease;color:var(--c-sub)}
.faq-item.open .faq-icon{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{padding:0 20px 18px;font-size:14.5px;line-height:1.85;color:var(--c-sub)}

/* ---------- form ---------- */
.form-layout{display:grid;gap:28px}
@media(min-width:1024px){.form-layout{grid-template-columns:1fr 1fr;gap:48px;align-items:start}}
.form-card{background:#fff;border:1px solid var(--c-border);border-radius:20px;padding:26px;box-shadow:0 18px 44px rgba(24,45,90,.08)}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-text);margin-bottom:7px}
.field input[type=text],.field input[type=email],.field input[type=tel]{width:100%;height:44px;border:1px solid var(--c-border);border-radius:var(--r-md);padding:0 14px;color:var(--c-text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(46,91,230,.12)}
.radio-row{display:flex;flex-wrap:wrap;gap:10px}
.radio-chip{position:relative;display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid var(--c-border);border-radius:999px;font-size:14px;color:var(--c-sub);cursor:pointer;transition:.18s ease}
.radio-chip input{position:absolute;opacity:0;width:0;height:0}
.radio-chip:has(input:checked){border-color:var(--c-primary);background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.check-row{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--c-sub);line-height:1.7}
.check-row input{margin-top:3px;width:16px;height:16px;accent-color:var(--c-primary)}
.form-note{margin-top:12px;font-size:12.5px;color:var(--c-muted);line-height:1.7}
.form-msg{display:none;margin-top:14px;padding:12px 14px;border-radius:12px;background:#E8F7F0;color:#1B7A52;font-size:13.5px}
.form-msg.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:#0F1B33;color:#C8D3E6;padding:52px 0 0;margin-top:48px}
.footer-grid{display:grid;gap:30px;padding-bottom:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:var(--c-primary)}
.footer-brand b{color:#fff;font-size:15.5px;font-weight:700}
.site-footer p{font-size:13.5px;color:#93A4C0;line-height:1.85}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.3px}
.footer-col a{display:block;font-size:13.5px;color:#93A4C0;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 22px;display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;font-size:12.5px;color:#7E8FAB}
.footer-bottom .age{color:#C8D3E6}

/* ---------- mobile cta ---------- */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-top:1px solid var(--c-border);padding:9px 16px;display:flex;align-items:center;gap:12px}
.mobile-cta .btn{flex:1}
.mobile-cta span{font-size:12.5px;color:var(--c-sub);flex:none}
@media(min-width:1024px){.mobile-cta{display:none}}
@media(max-width:1023px){body{padding-bottom:64px}}

/* roulang page: article */
:root{
  --c-primary:#2E5BE6;
  --c-primary-700:#1E4FC2;
  --c-primary-50:#EEF3FF;
  --c-accent:#E85C7A;
  --c-accent-50:#FDEEF2;
  --c-success:#22A06B;
  --c-warn:#E8A33D;
  --c-text:#16233A;
  --c-sub:#5A6A85;
  --c-muted:#8A98AE;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F8FC;
  --c-border:#E3E9F2;
  --shadow-card:0 8px 24px rgba(24,45,90,.06);
  --shadow-hover:0 14px 32px rgba(24,45,90,.10);
  --r-lg:16px;
  --r-md:12px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
html body img{max-width:100%;display:block}
html body a{color:inherit;text-decoration:none}
html body button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
html body h1,html body h2,html body h3,html body h4{margin:0}
html body p{margin:0}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.site-container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 18px rgba(24,45,90,.07)}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;flex:none;border-radius:12px;background:var(--c-primary);display:grid;place-items:center;color:#fff;box-shadow:0 6px 14px rgba(46,91,230,.28)}
.brand-text{font-size:15.5px;font-weight:700;letter-spacing:.2px;line-height:1.2;white-space:nowrap}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.4px;margin-top:2px}
.nav-links{display:none;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 14px;border-radius:10px;font-size:15px;color:var(--c-sub);transition:color .18s ease,background .18s ease}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-50)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-toggle{width:42px;height:42px;border-radius:12px;border:1px solid var(--c-border);display:grid;place-items:center;color:var(--c-sub);background:#fff;transition:border-color .18s ease,color .18s ease}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
@media(min-width:1024px){.nav-links{display:flex}.nav-toggle{display:none}}
.drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:80;transform:translateX(102%);transition:transform .26s ease;box-shadow:-12px 0 40px rgba(24,45,90,.14);padding:20px;display:flex;flex-direction:column;gap:6px}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(22,35,58,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .26s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;gap:12px}
.drawer-link{padding:13px 14px;border-radius:12px;font-size:15.5px;color:var(--c-sub);transition:background .18s ease,color .18s ease}
.drawer-link:hover,.drawer-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.drawer .btn{margin-top:8px;width:100%}

/* ---------- buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-md);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,border-color .18s ease}
.btn-lg{height:48px;padding:0 28px;font-size:15.5px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(46,91,230,.22)}
.btn-primary:hover{background:var(--c-primary-700);box-shadow:0 10px 22px rgba(46,91,230,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(46,91,230,.2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50)}
.btn-light{background:#fff;color:var(--c-primary-700);border-color:#fff}
.btn-light:hover{background:#F2F6FF}
.btn:focus-visible,.nav-link:focus-visible,.toc-link:focus-visible,.drawer-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;font-size:12px;border-radius:999px;font-weight:600;line-height:1.6}
.badge-primary{background:var(--c-primary-50);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-50);color:var(--c-accent)}
.badge-soft{background:#EFF2F7;color:var(--c-sub)}
.badge-success{background:#E8F7F0;color:var(--c-success)}

/* ---------- sections / cards ---------- */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:80px 0}}
.section-soft{background:var(--c-bg-soft);border-top:1px solid var(--c-border);border-bottom:1px solid var(--c-border)}
.section-head{max-width:760px;margin-bottom:28px}
@media(min-width:768px){.section-head{margin-bottom:40px}}
.section-head h2{font-size:24px;font-weight:700;letter-spacing:-.3px;line-height:1.35}
@media(min-width:768px){.section-head h2{font-size:28px}}
.section-desc{color:var(--c-sub);font-size:15.5px;line-height:1.85;margin-top:10px}
.card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}

/* ---------- article head ---------- */
.article-hero{position:relative;background:#F7F9FE;border-bottom:1px solid var(--c-border);padding:36px 0 34px;overflow:hidden}
.article-hero::after{content:"";position:absolute;right:-120px;top:-140px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(46,91,230,.10),rgba(46,91,230,0) 70%)}
.article-hero .inner{position:relative;max-width:900px}
.hero-badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.article-hero h1{font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.4px}
@media(min-width:768px){.article-hero h1{font-size:38px;line-height:1.24}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;margin-top:18px;color:var(--c-muted);font-size:13.5px}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C7D2E4;display:inline-block}
.meta-row b{color:var(--c-sub);font-weight:600}
.rule{height:1px;background:var(--c-border);border:0;margin:22px 0 0}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--c-border);padding:13px 0}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--c-muted)}
.crumb a{color:var(--c-sub);transition:color .18s ease}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.crumb .sep{color:#C3CEE0}
.crumb .cur{color:var(--c-text);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media(min-width:768px){.crumb .cur{max-width:520px}}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 250px;gap:44px;align-items:start}}
.key-points{background:var(--c-primary-50);border:1px solid #DCE6FF;border-radius:var(--r-lg);padding:22px 24px;margin-bottom:30px}
.key-points h2{font-size:16px;font-weight:700;color:var(--c-primary-700);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.key-points ul{list-style:none;margin:0;padding:0}
.key-points li{position:relative;padding-left:22px;font-size:14.5px;line-height:1.8;color:var(--c-sub);margin-bottom:8px}
.key-points li:last-child{margin-bottom:0}
.key-points li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--c-primary)}

.article-body{max-width:720px;font-size:16.5px;line-height:1.9;color:#222F44;overflow-wrap:break-word;word-break:break-word}
@media(min-width:768px){.article-body{font-size:17px}}
.article-body h2{position:relative;font-size:20px;font-weight:700;color:var(--c-text);margin:40px 0 16px;padding-left:14px;scroll-margin-top:90px}
.article-body h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:3px;background:var(--c-primary)}
.article-body h3{font-size:18px;font-weight:600;margin:28px 0 12px;color:var(--c-text)}
.article-body h4{font-size:16px;font-weight:600;margin:22px 0 10px}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1.5px}
.article-body a:hover{color:var(--c-accent)}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:0;list-style:none}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul>li::before{content:"";position:absolute;left:3px;top:.74em;width:7px;height:7px;border-radius:2px;background:var(--c-primary)}
.article-body ol{counter-reset:li}
.article-body ol>li::before{counter-increment:li;content:counter(li);position:absolute;left:0;top:.12em;width:18px;height:18px;border-radius:6px;background:var(--c-primary-50);color:var(--c-primary);font-size:11.5px;font-weight:700;display:grid;place-items:center;font-variant-numeric:tabular-nums}
.article-body blockquote{margin:22px 0;padding:16px 20px;background:var(--c-primary-50);border-left:4px solid var(--c-primary);border-radius:0 12px 12px 0;color:var(--c-sub);font-size:15.5px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:22px 0;height:auto}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#F1F4F9;color:#2B3A55;padding:2px 6px;border-radius:6px;font-size:14px}
.article-body pre{background:#F1F4F9;border:1px solid var(--c-border);border-radius:12px;padding:16px 18px;overflow-x:auto;margin:20px 0}
.article-body pre code{background:none;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:10px 12px;text-align:left}
.article-body th{background:var(--c-bg-soft);font-weight:600}
.article-body hr{border:0;height:1px;background:var(--c-border);margin:28px 0}

.article-empty{max-width:720px;background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-lg);padding:40px 24px;text-align:center}
.article-empty h2{font-size:20px;font-weight:700;margin-bottom:10px}
.article-empty p{color:var(--c-sub);font-size:15px;margin-bottom:20px}

/* ---------- toc ---------- */
.toc-wrap{order:-1}
@media(min-width:1024px){.toc-wrap{order:0}}
.toc-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;height:46px;padding:0 16px;border-radius:var(--r-md);border:1px solid var(--c-border);background:#fff;color:var(--c-sub);font-size:14px;font-weight:600;box-shadow:var(--shadow-card)}
.toc-toggle svg{transition:transform .2s ease}
.toc-toggle.is-open svg{transform:rotate(180deg)}
.toc-card{display:none;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:18px;margin-top:12px}
.toc-card.is-open{display:block}
@media(min-width:1024px){
  .toc-toggle{display:none}
  .toc-card{display:block;margin-top:0;position:sticky;top:88px}
}
.toc-card h4{font-size:13px;font-weight:700;letter-spacing:.4px;color:var(--c-muted);text-transform:uppercase;margin-bottom:12px}
.toc-nav{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow:auto}
.toc-link{display:block;padding:7px 10px;border-left:3px solid transparent;border-radius:0 8px 8px 0;font-size:13.5px;line-height:1.6;color:var(--c-sub);transition:background .18s ease,color .18s ease,border-color .18s ease}
.toc-link:hover{background:var(--c-primary-50);color:var(--c-primary)}
.toc-link.is-active{border-left-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-50);font-weight:600}
.toc-empty{font-size:13.5px;color:var(--c-muted)}

/* ---------- safety strip ---------- */
.safety-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.safety-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.safety-item{display:flex;gap:14px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-card)}
.safety-icon{width:40px;height:40px;flex:none;border-radius:12px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center}
.safety-item h3{font-size:15.5px;font-weight:600;margin-bottom:4px}
.safety-item p{font-size:13.5px;line-height:1.75;color:var(--c-sub)}

/* ---------- related ---------- */
.post-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.post-grid{grid-template-columns:repeat(2,1fr);gap:22px}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:20px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}
.post-card h3{font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card p{font-size:13.5px;line-height:1.75;color:var(--c-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:12.5px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.post-more{color:var(--c-primary);font-weight:600}
.empty-note{grid-column:1/-1;background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-lg);padding:32px 20px;text-align:center;color:var(--c-sub);font-size:14.5px}

/* ---------- prev next ---------- */
.pn-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.pn-grid{grid-template-columns:1fr 1fr;gap:22px}}
.pn-card{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);padding:18px 20px;box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}
.pn-card .pn-dir{font-size:12.5px;color:var(--c-muted);margin-bottom:2px}
.pn-card .pn-title{font-size:15.5px;font-weight:600;line-height:1.5}
.pn-card.next{justify-content:flex-end;text-align:right}
.pn-arrow{width:36px;height:36px;flex:none;border-radius:10px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center}

/* ---------- end cta ---------- */
.end-cta{background:var(--c-primary-700);border-radius:20px;padding:30px 24px;color:#fff;display:flex;flex-direction:column;gap:20px}
@media(min-width:768px){.end-cta{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 40px;gap:28px}}
.end-cta h2{font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.2px}
@media(min-width:768px){.end-cta h2{font-size:26px}}
.end-cta p{color:#CBD9FF;font-size:14.5px;margin-top:8px;line-height:1.75}
.end-cta .actions{display:flex;flex-wrap:wrap;gap:12px}
.end-cta .text-link{color:#DCE6FF;font-size:14px;text-decoration:underline;text-underline-offset:4px}
.end-cta .text-link:hover{color:#fff}

/* ---------- footer ---------- */
.site-footer{background:#F6F8FC;border-top:1px solid var(--c-border);padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-brand b{font-size:15.5px}
.site-footer p{font-size:13.5px;line-height:1.85;color:var(--c-sub)}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.4px;color:var(--c-text);margin-bottom:12px}
.footer-col a{display:block;font-size:13.5px;color:var(--c-sub);padding:4px 0;transition:color .18s ease}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;flex-direction:column;gap:6px;justify-content:space-between;border-top:1px solid var(--c-border);margin-top:32px;padding-top:18px;font-size:12.5px;color:var(--c-muted)}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center}}
.footer-bottom .age{color:#9AA7BC}

/* roulang page: category1 */
:root{
  --c-primary:#2E5BE6;
  --c-primary-700:#1E4FC2;
  --c-primary-50:#EEF3FF;
  --c-accent:#E85C7A;
  --c-accent-50:#FDEEF2;
  --c-success:#22A06B;
  --c-warn:#E8A33D;
  --c-text:#16233A;
  --c-sub:#5A6A85;
  --c-muted:#8A98AE;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F6F8FC;
  --c-border:#E3E9F2;
  --shadow-card:0 8px 24px rgba(24,45,90,.06);
  --shadow-hover:0 14px 32px rgba(24,45,90,.10);
  --r-lg:16px;
  --r-md:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
.site-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.site-container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--c-border);box-shadow:0 6px 18px rgba(24,45,90,.07)}
.nav-wrap{height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:38px;height:38px;flex:none;border-radius:12px;background:var(--c-primary);display:grid;place-items:center;color:#fff;box-shadow:0 6px 14px rgba(46,91,230,.28)}
.brand-text{font-size:15.5px;font-weight:700;letter-spacing:.2px;line-height:1.2;white-space:nowrap}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-muted);letter-spacing:.4px;margin-top:2px}
.nav-links{display:none;align-items:center;gap:4px}
.nav-link{position:relative;padding:8px 14px;border-radius:10px;font-size:15px;color:var(--c-sub);transition:color .18s ease,background .18s ease}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-50)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-toggle{width:42px;height:42px;border-radius:12px;border:1px solid var(--c-border);display:grid;place-items:center;color:var(--c-sub);background:#fff}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
@media(min-width:900px){.nav-links{display:flex}.nav-toggle{display:none}}
@media(max-width:899px){.nav-right .btn-primary{display:none}}

/* ---------- drawer ---------- */
.drawer{position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:80;transform:translateX(102%);transition:transform .26s ease;box-shadow:-12px 0 40px rgba(24,45,90,.14);padding:20px;display:flex;flex-direction:column;gap:6px}
.drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(22,35,58,.42);z-index:70;opacity:0;pointer-events:none;transition:opacity .26s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.drawer-link{padding:13px 14px;border-radius:12px;font-size:15.5px;color:var(--c-sub)}
.drawer-link:hover,.drawer-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.drawer .btn{margin-top:10px;width:100%}

/* ---------- buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 24px;border-radius:var(--r-md);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,border-color .18s ease}
.btn-lg{height:48px;padding:0 28px;font-size:15.5px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(46,91,230,.22)}
.btn-primary:hover{background:var(--c-primary-700);box-shadow:0 10px 22px rgba(46,91,230,.28);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(46,91,230,.2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50)}
.btn:focus-visible,.nav-link:focus-visible,.brand:focus-visible,.faq-q:focus-visible,.toc a:focus-visible,a:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;font-size:12px;border-radius:999px;font-weight:600;line-height:1.6}
.badge-primary{background:var(--c-primary-50);color:var(--c-primary)}
.badge-accent{background:var(--c-accent-50);color:var(--c-accent)}
.badge-soft{background:#EFF2F7;color:var(--c-sub)}
.badge-success{background:#E8F7F0;color:var(--c-success)}

/* ---------- 分类页头 ---------- */
.cat-head{position:relative;overflow:hidden;background:#F7F9FE;border-bottom:1px solid var(--c-border)}
.cat-head-bg{position:absolute;inset:0;background:url('/assets/images/f5d4e135e9647a12.webp') center/cover no-repeat;opacity:.12}
.cat-head-inner{position:relative;padding:30px 0 32px;display:flex;flex-direction:column;gap:16px}
@media(min-width:1024px){.cat-head-inner{flex-direction:row;align-items:flex-end;justify-content:space-between;padding:38px 0 40px;gap:32px}}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--c-muted)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:#C3CDDD}
.cat-head h1{font-size:27px;line-height:1.26;font-weight:700;letter-spacing:-.3px;margin-top:12px}
@media(min-width:768px){.cat-head h1{font-size:32px}}
@media(min-width:1024px){.cat-head h1{font-size:38px;line-height:1.2}}
.cat-lead{color:var(--c-sub);font-size:15px;margin-top:10px;max-width:640px}
.cat-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:14px}
.cat-head-side{display:flex;align-items:center;gap:10px}

/* ---------- 文档式主体 ---------- */
.doc-grid{display:grid;grid-template-columns:1fr;gap:26px;padding:32px 0 10px}
@media(min-width:1024px){.doc-grid{grid-template-columns:284px minmax(0,1fr);gap:44px;padding:48px 0 10px;align-items:start}}
.doc-aside{display:none}
@media(min-width:1024px){.doc-aside{display:flex;flex-direction:column;gap:18px;position:sticky;top:88px}}
.aside-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);padding:20px}
.aside-title{font-size:13px;font-weight:700;letter-spacing:.6px;color:var(--c-muted);margin-bottom:12px}
.toc{display:flex;flex-direction:column;gap:2px}
.toc a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--c-sub);transition:background .18s ease,color .18s ease}
.toc a::before{content:"";width:4px;height:4px;border-radius:50%;background:#C3CDDD;flex:none}
.toc a:hover{background:var(--c-primary-50);color:var(--c-primary)}
.toc a:hover::before{background:var(--c-primary)}
.quick-list{display:flex;flex-direction:column;gap:10px}
.quick-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:13.5px;padding-bottom:10px;border-bottom:1px dashed var(--c-border)}
.quick-row:last-child{border-bottom:0;padding-bottom:0}
.quick-row span{color:var(--c-sub)}
.quick-row b{color:var(--c-text);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}

.doc-main{min-width:0;display:flex;flex-direction:column;gap:44px}
.doc-block{scroll-margin-top:92px}
.block-head{margin-bottom:20px}
.block-title{font-size:21px;font-weight:700;letter-spacing:-.2px;line-height:1.35}
@media(min-width:768px){.block-title{font-size:25px}}
.block-sub{color:var(--c-sub);font-size:14.5px;line-height:1.8;margin-top:8px;max-width:720px}

/* 封面图 */
.doc-figure{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-border);box-shadow:var(--shadow-card);aspect-ratio:16/9;margin-bottom:20px}
.doc-figure img{width:100%;height:100%;object-fit:cover}

/* 条目卡 */
.entry-list{display:flex;flex-direction:column;gap:14px}
.entry{display:flex;flex-direction:column;gap:12px;padding:18px;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.entry:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}
@media(min-width:768px){.entry{flex-direction:row;align-items:flex-start;gap:16px;padding:20px 22px}}
.entry-idx{width:38px;height:38px;flex:none;border-radius:11px;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
.entry-body{flex:1;min-width:0}
.entry-body h3{font-size:16.5px;font-weight:600;line-height:1.5}
.entry-body p{color:var(--c-sub);font-size:14px;line-height:1.75;margin-top:6px}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tag{display:inline-flex;align-items:center;font-size:12px;color:var(--c-sub);background:#F2F5FA;border:1px solid var(--c-border);border-radius:999px;padding:2px 10px;line-height:1.7}
.entry-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:var(--c-primary);white-space:nowrap}
.entry-link:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
@media(min-width:768px){.entry-link{align-self:center;margin-left:6px}}

/* 键值清单 */
.kv-list{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);overflow:hidden}
.kv-row{display:flex;flex-wrap:wrap;gap:4px 16px;justify-content:space-between;padding:13px 20px;border-top:1px solid var(--c-border);font-size:14.5px;transition:background .18s ease}
.kv-row:first-child{border-top:0}
.kv-row:hover{background:#F8FAFF}
.kv-key{color:var(--c-sub);flex:none;min-width:110px}
.kv-val{color:var(--c-text);font-weight:500;flex:1;min-width:0;text-align:left}
@media(min-width:640px){.kv-val{text-align:right}}

/* 对照卡 */
.compare{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-lg);box-shadow:var(--shadow-card);overflow:hidden}
.compare-head,.compare-row{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:8px;align-items:center;padding:12px 16px;font-size:13.5px}
@media(min-width:640px){.compare-head,.compare-row{padding:13px 22px;font-size:14px}}
.compare-head{background:var(--c-primary-50);color:var(--c-primary);font-weight:700;font-size:12.5px;letter-spacing:.2px}
.compare-row{border-top:1px solid var(--c-border);transition:background .18s ease}
.compare-row:hover{background:#F8FAFF}
.compare-row .feat{color:var(--c-text);font-weight:500}
.mark{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:13.5px}
.mark.yes{color:var(--c-success)}
.mark.no{color:#9AA7BC}
.mark svg{flex:none}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--c-border);border-radius:14px;overflow:hidden;transition:background .2s ease,border-color .2s ease,box-shadow .2s ease}
.faq-item:hover{border-color:#D6E0F0}
.faq-item.is-open{background:var(--c-primary-50);border-color:#CFDDFB;box-shadow:var(--shadow-card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:15px 18px;font-size:15.5px;font-weight:600;text-align:left;line-height:1.6}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--c-primary)}
.faq-icon{flex:none;color:var(--c-sub);transition:transform .2s ease,color .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{padding:0 18px 16px;font-size:14.5px;line-height:1.85;color:var(--c-sub)}

/* 更新记录 */
.timeline{position:relative;padding-left:24px}
.timeline::before{content:"";position:absolute;left:4px;top:8px;bottom:8px;width:2px;background:var(--c-border);border-radius:2px}
.tl-item{position:relative;padding-bottom:18px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-24px;top:7px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--c-primary)}
.tl-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tl-date{font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-50);border-radius:999px;padding:2px 10px;font-variant-numeric:tabular-nums}
.tl-ver{font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.tl-text{font-size:14.5px;color:var(--c-sub);line-height:1.8;margin-top:6px}

/* 相关阅读 */
.read-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:768px){.read-grid{grid-template-columns:1fr 1fr;gap:16px}}
.read-card{display:flex;gap:14px;padding:14px;background:#fff;border:1px solid var(--c-border);border-radius:14px;box-shadow:var(--shadow-card);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.read-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6E0F0}
.read-thumb{width:88px;height:66px;flex:none;border-radius:10px;overflow:hidden;background:var(--c-primary-50)}
.read-thumb img{width:100%;height:100%;object-fit:cover}
.read-body{min-width:0;display:flex;flex-direction:column;gap:4px;justify-content:center}
.read-cat{font-size:11.5px;font-weight:600;color:var(--c-primary)}
.read-title{font-size:14.5px;font-weight:600;line-height:1.6;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.read-date{font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.list-empty{background:#fff;border:1px dashed var(--c-border);border-radius:var(--r-lg);padding:36px 20px;text-align:center;color:var(--c-muted);font-size:14px}

/* 页尾行动条 */
.cta-strip{background:var(--c-primary-50);border:1px solid #D8E3FB;border-radius:var(--r-lg);padding:22px;display:flex;flex-direction:column;gap:16px}
@media(min-width:768px){.cta-strip{flex-direction:row;align-items:center;justify-content:space-between;padding:26px 30px;gap:28px}}
.cta-strip h2{font-size:19px;font-weight:700;line-height:1.45}
@media(min-width:768px){.cta-strip h2{font-size:21px}}
.cta-strip p{font-size:14px;color:var(--c-sub);line-height:1.8;margin-top:6px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;flex:none}
.cta-link{font-size:14px;color:var(--c-primary);font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.cta-link:hover{color:var(--c-accent)}

/* ---------- footer ---------- */
.site-footer{background:#101B30;color:#C6D2E6;padding:52px 0 0;margin-top:56px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:28px;padding-bottom:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:34px}}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;color:#fff;margin-bottom:12px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-brand b{font-weight:700;letter-spacing:.2px}
.site-footer p{font-size:13.5px;line-height:1.85;color:#93A3BE}
.footer-col h4{font-size:13px;letter-spacing:.6px;color:#fff;margin-bottom:12px;font-weight:700}
.footer-col a{display:block;font-size:13.5px;color:#93A3BE;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#7E8FAB}
.footer-bottom .age{color:#93A3BE}

/* 移动端固定 CTA */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:50;display:none;align-items:center;gap:12px;padding:10px 16px;background:rgba(255,255,255,.97);border-top:1px solid var(--c-border);box-shadow:0 -6px 20px rgba(24,45,90,.08)}
.mobile-cta .btn{flex:1;height:44px}
.mobile-cta span{font-size:12.5px;color:var(--c-sub);line-height:1.4}
@media(max-width:767px){
  .mobile-cta{display:flex}
  html body{padding-bottom:66px}
}