/* roulang page: index */
:root{
  --brand:#5332E8;
  --brand-deep:#3E22C4;
  --brand-soft:rgba(83,50,232,.08);
  --accent:#B8E33A;
  --ink:#141317;
  --ink-soft:#4A4750;
  --muted:#86828C;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --line:#E6E1D9;
  --line-strong:#D6D0C6;
  --radius:14px;
  --radius-lg:18px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,19,23,.04);
  --shadow-2:0 14px 34px -18px rgba(20,19,23,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --nav-h:64px;
  --chap-h:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-deep)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer}
::selection{background:rgba(83,50,232,.16)}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

.wrap{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}
@media (max-width:767px){.wrap{padding:0 20px}}

.section{padding:104px 0}
@media (max-width:767px){.section{padding:64px 0}}

.sec-head{margin-bottom:44px;max-width:720px}
.sec-head .kicker{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.sec-title{font-size:clamp(24px,2.6vw,34px);font-weight:700;letter-spacing:-.02em}
.sec-desc{margin-top:14px;color:var(--ink-soft);font-size:16px;line-height:1.8}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);transition:box-shadow .26s var(--ease)}
.brandline{height:var(--nav-h);display:flex;align-items:center;overflow:hidden;transition:height .28s var(--ease),opacity .2s var(--ease)}
.brandline-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{display:flex;align-items:baseline;gap:8px;flex-shrink:0;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--brand)}
.logo-sub{font-size:12px;font-weight:600;letter-spacing:.1em;color:var(--muted);padding-left:8px;border-left:1px solid var(--line-strong)}
.brand-right{display:flex;align-items:center;gap:20px}
.brand-link{font-size:14px;color:var(--ink-soft);display:inline-flex;align-items:center;gap:6px}
.brand-link:hover{color:var(--brand)}
.brand-link i{color:var(--brand);font-size:13px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);align-items:center;justify-content:center}
.nav-toggle:hover{border-color:var(--line-strong)}

.channelbar{border-top:1px solid var(--line);background:var(--paper);transition:background .26s var(--ease),box-shadow .26s var(--ease)}
.site-header.is-scrolled .channelbar{background:var(--surface);box-shadow:0 8px 22px -20px rgba(20,19,23,.45);border-bottom-color:var(--line)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--chap-h)}
.channels{display:flex;align-items:center;gap:28px}
.channels a{font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0;position:relative}
.channels a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--brand);transition:right .24s var(--ease)}
.channels a:hover{color:var(--ink)}
.channels a:hover::after{right:0}
.channels a.active{color:var(--brand);font-weight:600}
.channels a.active::after{right:0}
.channel-tools{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-pill);padding:7px 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.10)}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{border:0;outline:0;background:transparent;width:150px;font-size:14px}
.hot-tags{display:flex;align-items:center;gap:8px}
.hot-tag{font-size:12px;font-weight:600;color:var(--ink-soft);background:transparent;border:1px solid var(--line);border-radius:var(--radius-pill);padding:4px 12px;transition:all .2s var(--ease)}
.hot-tag:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}

.drawer{position:fixed;inset:0;z-index:120;background:var(--surface);transform:translateY(-100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;padding:20px}
.drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.drawer a.drawer-link{display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer a.drawer-link.active{color:var(--brand)}
.drawer-search{margin-top:24px}
.drawer-search input{width:100%;height:48px;border:1px solid var(--line);border-radius:10px;padding:0 14px;outline:0}
.drawer-search input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.12)}

@media (min-width:1024px){
  .site-header.is-scrolled .brandline{height:0;opacity:0}
}
@media (max-width:1023px){
  .channelbar{display:none}
  .nav-toggle{display:inline-flex}
  .brand-right .brand-link{display:none}
  .brand-right .btn{display:none}
}

/* ============ buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--radius-pill);border:1px solid transparent;background:var(--brand);color:#fff;font-weight:600;font-size:15px;line-height:1;min-height:46px;transition:transform .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease)}
.btn:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn:focus-visible{outline:2px solid rgba(83,50,232,.45);outline-offset:2px}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn-sm{padding:10px 20px;min-height:40px;font-size:14px}
.link-btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--brand)}
.link-btn i{transition:transform .24s var(--ease);font-size:13px}
.link-btn:hover i{transform:translateX(4px)}

/* ============ hero ============ */
.hero{padding:76px 0 92px}
.hero-grid{display:flex;gap:24px;align-items:center}
.hero-copy{flex:0 0 58.3333%}
.hero-visual{flex:0 0 41.6667%}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:700;letter-spacing:-.02em;line-height:1.2}
.hero-sub{margin-top:18px;font-size:18px;font-weight:600;color:var(--ink-soft);line-height:1.6}
.hero-points{margin-top:22px;display:grid;gap:10px}
.hero-points li{display:flex;gap:10px;color:var(--ink-soft);font-size:15.5px;line-height:1.7}
.hero-points i{color:var(--brand);margin-top:7px;font-size:12px}
.hero-actions{margin-top:32px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.hero-trust{margin-top:38px;display:flex;flex-wrap:wrap;gap:10px}
.trust-chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--ink-soft);border:1px solid var(--line);border-radius:var(--radius-pill);padding:7px 15px;background:var(--surface)}
.trust-chip i{color:var(--brand);font-size:12px}
.hero-figure{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);background:var(--surface)}
.hero-figure img{border-radius:var(--radius-lg);width:100%;object-fit:cover;aspect-ratio:4/3.4}
@media (max-width:899px){
  .hero{padding:48px 0 64px}
  .hero-grid{flex-direction:column}
  .hero-copy,.hero-visual{flex:1 1 100%;width:100%}
  .hero-visual{order:2}
}

/* ============ pain ============ */
.pain-list{border-top:1px solid var(--line)}
.pain-item{display:flex;gap:24px;align-items:flex-start;padding:28px 0;border-bottom:1px solid var(--line)}
.pain-idx{font-size:15px;font-weight:700;color:var(--brand);letter-spacing:.06em;min-width:44px;padding-top:6px;font-variant-numeric:tabular-nums}
.pain-q{font-size:clamp(19px,2vw,25px);font-weight:600;line-height:1.55;letter-spacing:-.01em;color:var(--ink);margin:0}
.pain-note{margin-top:8px;color:var(--muted);font-size:14.5px}

/* ============ cards ============ */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);overflow:hidden;display:flex;flex-direction:column;height:100%}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.card:hover .zoom img{transform:scale(1.03)}
.zoom{overflow:hidden}
.zoom img{transition:transform .4s var(--ease);width:100%;object-fit:cover}
.card-body{padding:26px 28px 28px}
.card-title{font-size:20px;font-weight:700;line-height:1.45;color:var(--ink)}
.card-text{margin-top:10px;color:var(--ink-soft);font-size:15px;line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:18px}
.stack-gap{display:flex;flex-wrap:wrap;gap:24px}
.span-6{flex:0 0 calc(50% - 12px)}
.span-12{flex:1 1 100%}
@media (max-width:767px){.span-6{flex:1 1 100%}}

.card-xl{flex-direction:row;align-items:stretch}
.card-xl .card-body{flex:1 1 56%;padding:40px 42px;display:flex;flex-direction:column;justify-content:center}
.card-xl .zoom{flex:1 1 44%;min-height:280px}
.card-xl .zoom img{height:100%;min-height:280px;object-fit:cover}
@media (max-width:899px){
  .card-xl{flex-direction:column}
  .card-xl .card-body{padding:28px}
  .card-xl .zoom{min-height:210px}
  .card-xl .zoom img{min-height:210px}
}

.strip-card{display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow-1);transition:transform .26s var(--ease),box-shadow .26s var(--ease)}
.strip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.strip-card .strip-main{flex:1 1 auto;min-width:0}
.strip-card strong{display:block;font-size:17px;font-weight:700;color:var(--ink)}
.strip-card span{display:block;color:var(--ink-soft);font-size:14.5px;line-height:1.7;margin-top:4px}
.strip-card i.arrow{color:var(--brand);font-size:14px;transition:transform .24s var(--ease);flex-shrink:0}
.strip-card:hover i.arrow{transform:translateX(4px)}

/* ============ stats ============ */
.stats-band{background:var(--ink);color:var(--paper);padding:80px 0}
.stats-grid{display:flex;flex-wrap:wrap}
.stat-item{flex:0 0 25%;padding:0 28px;border-left:1px solid rgba(247,245,241,.16)}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-value{font-size:clamp(30px,3.4vw,44px);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1;color:#fff}
.stat-value em{font-style:normal;font-size:20px;font-weight:700;color:var(--accent);margin-left:4px}
.stat-label{margin-top:12px;font-size:14.5px;color:rgba(247,245,241,.72);line-height:1.6}
.stat-rule{margin-top:8px;width:38px;height:2px;background:var(--accent)}
.stats-foot{margin-top:44px;padding-top:22px;border-top:1px solid rgba(247,245,241,.16);font-size:13.5px;color:rgba(247,245,241,.55)}
@media (max-width:767px){
  .stat-item{flex:0 0 50%;padding:22px 20px;border-left:0;border-top:1px solid rgba(247,245,241,.16)}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-top:0}
  .stat-item:nth-child(odd){padding-left:0}
}

/* ============ news ============ */
.news-layout{display:flex;gap:40px;align-items:flex-start}
.news-main{flex:1 1 auto;min-width:0}
.news-side{flex:0 0 320px}
.news-list{display:flex;flex-direction:column;gap:18px}
.news-card{display:flex;gap:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-1);transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease)}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.news-card:hover .zoom img{transform:scale(1.03)}
.news-thumb{flex:0 0 176px;border-radius:10px;overflow:hidden}
.news-thumb img{width:100%;height:120px;object-fit:cover;transition:transform .4s var(--ease)}
.news-body{flex:1 1 auto;min-width:0}
.news-title{margin-top:10px;font-size:17.5px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-sum{margin-top:8px;font-size:14.5px;color:var(--ink-soft);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:12px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted)}
.tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;border-radius:var(--radius-pill);padding:4px 12px;background:var(--brand-soft);color:var(--brand)}
.tag-accent{background:rgba(184,227,58,.28);color:#3C5200}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:16px}
.side-list li{border-top:1px solid var(--line);padding:12px 0}
.side-list li:first-child{border-top:0}
.side-list a{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.65;color:var(--ink-soft)}
.side-list a:hover{color:var(--brand)}
.side-list .dot{flex:0 0 6px;height:6px;border-radius:50%;background:var(--brand);margin-top:9px}
.side-form{margin-top:24px;background:var(--ink);color:var(--paper);border-radius:var(--radius-lg);padding:26px}
.side-form h3{color:#fff;font-size:16px;margin-bottom:10px}
.side-form p{font-size:14px;color:rgba(247,245,241,.7);line-height:1.7;margin-bottom:18px}
.side-form .btn{background:var(--accent);color:#2A3800}
.side-form .btn:hover{background:#cbf059;color:#2A3800}
.empty-state{background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--radius-lg);padding:64px 24px;text-align:center}
.empty-state .glyph{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;border:2px solid var(--line-strong);position:relative}
.empty-state .glyph::after{content:"";position:absolute;left:14px;right:14px;top:26px;height:2px;background:var(--line-strong)}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:14px}
@media (max-width:1023px){
  .news-layout{flex-direction:column}
  .news-side{flex:1 1 100%;width:100%}
}
@media (max-width:639px){
  .news-card{flex-direction:column}
  .news-thumb{flex:1 1 100%}
  .news-thumb img{height:180px}
}

/* ============ form band ============ */
.form-band{background:#EFEBE3;padding:96px 0}
.form-grid{display:flex;gap:48px;align-items:center}
.form-copy{flex:1 1 50%}
.form-copy h2{font-size:clamp(24px,2.6vw,32px)}
.form-copy p{margin-top:16px;color:var(--ink-soft);font-size:15.5px;line-height:1.85}
.promise-list{margin-top:26px;display:grid;gap:12px}
.promise-list li{display:flex;gap:10px;font-size:15px;color:var(--ink-soft)}
.promise-list i{color:var(--brand);margin-top:7px;font-size:12px}
.form-card{flex:0 0 420px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-2)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:var(--surface);outline:0;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field input,.field select{height:48px;padding:0 14px}
.field textarea{min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.12)}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='%2386828C' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:12px}
.privacy-note{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.7}
.privacy-note a{color:var(--brand)}
@media (max-width:1023px){
  .form-grid{flex-direction:column;align-items:stretch}
  .form-card{flex:1 1 100%}
}
@media (max-width:767px){.form-band{padding:64px 0}}

/* ============ faq ============ */
.faq-head{margin-bottom:36px}
.faq-title{font-size:clamp(24px,2.6vw,34px)}
.accordion{border:0;background:transparent}
.accordion .accordion-item{border:0}
.accordion .accordion-title{border-top:1px solid var(--line);border-left:3px solid transparent;padding:22px 48px 22px 20px;font-size:17.5px;font-weight:700;color:var(--ink);transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease)}
.accordion .accordion-title:hover{color:var(--brand);border-left-color:var(--brand);background:rgba(83,50,232,.03)}
.accordion .accordion-title::before{right:18px;top:50%;transform:translateY(-50%);color:var(--brand);font-size:18px;transition:transform .22s var(--ease)}
.accordion .accordion-item.is-active .accordion-title{border-left-color:var(--brand);color:var(--brand)}
.accordion .accordion-content{border:0;border-top:0;padding:0 48px 26px 20px;color:var(--ink-soft);font-size:15.5px;line-height:1.85;background:transparent;transition:max-height .22s var(--ease)}
.accordion .accordion-content p:last-child{margin-bottom:0}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--line)}

/* ============ cta band ============ */
.cta-band{background:var(--brand);border-radius:var(--radius-lg);padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,27px);line-height:1.4}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-top:10px}
.cta-band .btn{background:#fff;color:var(--brand)}
.cta-band .btn:hover{background:var(--ink);color:#fff}
@media (max-width:767px){.cta-band{padding:32px 24px}}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:rgba(247,245,241,.78);padding:72px 0 0;margin-top:104px}
.footer-grid{display:flex;flex-wrap:wrap;gap:40px}
.f-brand{flex:0 0 32%;min-width:260px}
.f-brand .logo-mark{color:#fff;font-size:20px;font-weight:800}
.f-brand .logo-sub{color:rgba(247,245,241,.5);border-left-color:rgba(247,245,241,.2)}
.f-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(247,245,241,.62);max-width:320px}
.f-col{flex:1 1 180px;min-width:150px}
.f-col h4{font-size:13px;font-weight:700;letter-spacing:.12em;color:#fff;margin-bottom:18px}
.f-col li{margin-bottom:12px}
.f-col a{font-size:14.5px;color:rgba(247,245,241,.72)}
.f-col a:hover{color:var(--accent)}
.f-contact li{font-size:14.5px;color:rgba(247,245,241,.72);display:flex;gap:10px;line-height:1.7}
.f-contact i{color:var(--accent);margin-top:6px;font-size:12px}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(247,245,241,.14);padding:24px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.5)}
@media (max-width:767px){.site-footer{padding:56px 0 0;margin-top:72px}}

/* ============ reveal animation ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
/* foundation overrides */
.reveal-overlay{z-index:200;background:rgba(20,19,23,.55);backdrop-filter:blur(3px)}
.reveal-modal.reveal{border:0;border-radius:16px;box-shadow:0 30px 70px -30px rgba(20,19,23,.6);padding:32px}
.reveal-modal .close-button{color:var(--muted);font-size:24px;top:14px;right:16px}

/* roulang page: article */
:root{
  --brand:#5332E8;
  --brand-deep:#3F22C4;
  --brand-tint:rgba(83,50,232,.10);
  --accent:#B8E33A;
  --ink:#141317;
  --ink-soft:#3A3742;
  --muted:#6E6A76;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --line:#E6E1D9;
  --line-strong:#D8D2C8;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 2px rgba(20,19,23,.04);
  --shadow-2:0 14px 34px -18px rgba(20,19,23,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --maxw:1200px;
  --gutter:32px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand);text-decoration:none;}
button{font-family:inherit;}
ul,ol{padding-left:1.2em;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0 0 1em;}
input,select,textarea{font-family:inherit;font-size:15px;}
::selection{background:var(--brand);color:#fff;}

.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-decoration:none;
  transition:background-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
  box-shadow:var(--shadow-1);
}
.btn:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn:focus-visible,button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid rgba(83,50,232,.45);outline-offset:2px;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);box-shadow:none;}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);
  background-image:linear-gradient(var(--brand),var(--brand));background-size:0% 1px;background-position:0 100%;
  background-repeat:no-repeat;transition:background-size .26s var(--ease);
}
.link-arrow i{transition:transform .24s var(--ease);}
.link-arrow:hover{background-size:100% 1px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 头部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;}
.brandline{
  background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden;
  max-height:80px;opacity:1;
  transition:max-height .28s var(--ease),opacity .22s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled .brandline{max-height:0;opacity:0;border-bottom-color:transparent;}
.brandline-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.logo{display:inline-flex;align-items:center;gap:8px;text-decoration:none;}
.logo-mark{font-size:20px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.logo-sub{
  font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-tint);border-radius:999px;padding:4px 10px;line-height:1;
}
.brand-right{display:flex;align-items:center;gap:18px;}
.brand-link{font-size:14px;color:var(--ink-soft);display:inline-flex;align-items:center;gap:7px;transition:color .2s var(--ease);}
.brand-link i{color:var(--brand);font-size:13px;}
.brand-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-size:16px;
}
.channelbar{background:transparent;border-bottom:1px solid transparent;transition:background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);}
.site-header.is-scrolled .channelbar{background:var(--surface);border-bottom-color:var(--line);box-shadow:0 10px 26px -24px rgba(20,19,23,.65);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:58px;flex-wrap:wrap;}
.channels{display:flex;align-items:center;gap:2px;flex-wrap:wrap;}
.channels a{
  display:inline-block;padding:9px 14px;font-size:15px;color:var(--ink-soft);border-bottom:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);border-radius:8px 8px 0 0;
}
.channels a:hover{color:var(--brand);background:var(--brand-tint);}
.channels a.active{color:var(--brand);font-weight:700;border-bottom-color:var(--brand);}
.channel-tools{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box i{position:absolute;left:14px;font-size:13px;color:var(--muted);pointer-events:none;}
.search-box input{
  width:250px;height:40px;padding:0 14px 0 36px;border:1px solid var(--line-strong);border-radius:999px;
  background:var(--surface);color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input::placeholder{color:#A8A3AE;}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.18);}
.hot-tags{display:flex;gap:8px;flex-wrap:wrap;}
.hot-tag{
  font-size:12.5px;color:var(--ink-soft);background:var(--surface);border:1px solid var(--line);
  border-radius:999px;padding:5px 12px;transition:all .2s var(--ease);
}
.hot-tag:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* ============ 文章头 ============ */
.article-hero{position:relative;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--line);padding:44px 0 40px;}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:url('/assets/images/backpic/back-2.webp') right center/cover no-repeat;opacity:.07;
}
.article-hero .wrap{position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.crumbs a{color:var(--muted);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--ink-soft);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:clamp(26px,3.4vw,40px);font-weight:700;letter-spacing:-.02em;line-height:1.28;max-width:900px;
}
.article-hero .lede{margin-top:16px;font-size:16px;color:var(--muted);max-width:760px;line-height:1.75;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:22px;font-size:13.5px;color:var(--muted);}
.meta-row .chip{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-tint);color:var(--brand);
  font-weight:700;font-size:12.5px;border-radius:999px;padding:5px 12px;letter-spacing:.02em;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong);}

/* ============ 布局 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;padding:56px 0 72px;align-items:start;}
.article-main{min-width:0;}

/* ============ 正文 ============ */
.article-body{
  font-size:17px;line-height:1.85;letter-spacing:.01em;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:38px 40px;box-shadow:var(--shadow-1);
}
.article-body > p:first-of-type{font-size:17.5px;color:var(--ink);}
.article-body h2{
  position:relative;font-size:clamp(22px,2.2vw,28px);font-weight:700;color:var(--ink);
  margin:44px 0 18px;padding-left:16px;scroll-margin-top:110px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.34em;width:4px;height:1em;border-radius:2px;background:var(--brand);}
.article-body h3{
  position:relative;font-size:20px;font-weight:600;color:var(--ink);
  margin:32px 0 14px;padding-left:13px;scroll-margin-top:110px;
}
.article-body h3::before{content:"";position:absolute;left:0;top:.38em;width:3px;height:.85em;border-radius:2px;background:var(--accent);}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:22px;}
.article-body li{margin:8px 0;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-weight:700;}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;border-left:4px solid var(--brand);background:var(--paper);
  border-radius:0 12px 12px 0;color:var(--ink);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:26px 0 10px;box-shadow:var(--shadow-1);}
.article-body figure{margin:26px 0;}
.article-body figcaption,.article-body .caption{font-size:13px;color:var(--muted);text-align:center;line-height:1.6;margin-top:8px;}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th{background:var(--paper);color:var(--ink);font-weight:700;text-align:left;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;line-height:1.65;}
.article-body a{
  color:var(--brand);font-weight:500;
  background-image:linear-gradient(var(--brand),var(--brand));background-size:0% 1px;
  background-position:0 100%;background-repeat:no-repeat;transition:background-size .26s var(--ease);
}
.article-body a:hover{background-size:100% 1px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-deep);}

/* 无内容态 */
.no-content{background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--radius-lg);padding:56px 32px;text-align:center;}
.no-content i{font-size:26px;color:var(--brand);}
.no-content h2{margin:16px 0 10px;font-size:22px;}
.no-content p{color:var(--muted);margin-bottom:22px;}

/* ============ 侧栏 ============ */
.side-col{min-width:0;}
.sticky-wrap{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-1);}
.side-card h3{font-size:15px;font-weight:700;letter-spacing:.02em;display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.side-card h3 i{color:var(--brand);font-size:13px;}
.toc{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.toc li{margin:0;}
.toc a{
  display:block;padding:8px 0 8px 12px;border-left:2px solid var(--line);font-size:14.5px;color:var(--ink-soft);
  line-height:1.5;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.toc a.lv3{padding-left:24px;font-size:13.5px;color:var(--muted);}
.toc a:hover{color:var(--brand);border-left-color:var(--brand);background:rgba(83,50,232,.04);}
.toc a.is-active{color:var(--brand);border-left-color:var(--brand);font-weight:600;}
.side-empty{font-size:14px;color:var(--muted);line-height:1.7;}
.side-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.side-links li{border-bottom:1px solid var(--line);}
.side-links li:last-child{border-bottom:0;}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;color:var(--ink-soft);transition:color .2s var(--ease);}
.side-links a i{font-size:12px;color:var(--muted);transition:transform .24s var(--ease),color .2s var(--ease);}
.side-links a:hover{color:var(--brand);}
.side-links a:hover i{color:var(--brand);transform:translateX(3px);}
.side-cta{background:var(--ink);color:rgba(247,245,241,.8);border:0;}
.side-cta h3{color:#fff;}
.side-cta h3 i{color:var(--accent);}
.side-cta p{font-size:14px;line-height:1.7;margin-bottom:16px;}

/* ============ 标签与翻页 ============ */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.pill{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 14px;transition:all .2s var(--ease);
}
.pill:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-tint);}
.pill-accent{background:rgba(184,227,58,.22);border-color:rgba(184,227,58,.55);color:#3F4E12;font-weight:600;}
.post-nav{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:34px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.post-nav a{display:inline-flex;flex-direction:column;gap:4px;max-width:48%;}
.post-nav .pn-label{font-size:12.5px;color:var(--muted);letter-spacing:.06em;}
.post-nav .pn-title{font-size:15px;color:var(--ink);font-weight:600;transition:color .2s var(--ease);}
.post-nav a:hover .pn-title{color:var(--brand);}
.post-nav .pn-next{text-align:right;align-items:flex-end;}
.back-list{margin-top:26px;}

/* ============ 相关推荐 ============ */
.related{padding:8px 0 72px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px;}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);}
.sec-head p{margin:10px 0 0;font-size:15px;color:var(--muted);max-width:60ch;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.card-media{overflow:hidden;aspect-ratio:16/10;background:var(--paper);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.7;margin:0;}
.card-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.card-foot .time{font-size:13px;color:var(--muted);}
.card a.title-link{color:var(--ink);}
.card a.title-link:hover{color:var(--brand);}

/* ============ CTA 条 ============ */
.cta-band{padding:0 0 84px;}
.cta-inner{
  background:var(--brand);border-radius:var(--radius-lg);padding:34px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:clamp(20px,2.2vw,26px);}
.cta-inner p{color:rgba(255,255,255,.82);margin:10px 0 0;font-size:15px;max-width:56ch;}
.btn-light{background:#fff;color:var(--brand);}
.btn-light:hover{background:var(--paper);color:var(--brand-deep);}

/* ============ 表单 ============ */
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input[type="text"],.field input[type="tel"],.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line-strong);border-radius:10px;
  background:var(--surface);color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{
  appearance:none;-webkit-appearance:none;padding-right:40px;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%236E6A76' d='M8 11.2 2.6 5.8l1.1-1.1L8 9l4.3-4.3 1.1 1.1z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:14px;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.18);}
.field.has-error input,.field.has-error select{border-color:#D9762F;}
.form-hint{font-size:12.5px;color:var(--muted);line-height:1.65;margin-top:14px;}
.form-hint a{color:var(--brand);text-decoration:underline;}
.side-form .field{margin-bottom:12px;}

/* ============ 弹层 ============ */
.reveal-overlay{background:rgba(20,19,23,.55);backdrop-filter:blur(2px);}
.reveal{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:0;
  max-width:520px;box-shadow:0 30px 60px -30px rgba(20,19,23,.5);
}
.modal-head{padding:24px 28px 0;}
.modal-head h3{font-size:20px;margin-bottom:8px;}
.modal-head p{font-size:14px;color:var(--muted);margin:0;}
.modal-body{padding:22px 28px 28px;}
.modal-close{position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink-soft);cursor:pointer;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(247,245,241,.78);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;}
.f-brand .logo-mark{color:#fff;}
.f-brand .logo-sub{color:var(--accent);background:rgba(184,227,58,.10);}
.f-brand p{margin-top:18px;font-size:14px;line-height:1.75;max-width:34ch;color:rgba(247,245,241,.7);}
.f-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:16px;}
.f-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.f-col a{font-size:14.5px;color:rgba(247,245,241,.72);transition:color .2s var(--ease);}
.f-col a:hover{color:var(--accent);}
.f-contact li{display:flex;gap:10px;font-size:14px;line-height:1.6;color:rgba(247,245,241,.72);}
.f-contact i{color:var(--accent);margin-top:4px;font-size:13px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(247,245,241,.14);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.55);
}

/* ============ 动效 ============ */
.fx-up{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.fx-up.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--gutter:28px;}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:44px 0 64px;}
  .sticky-wrap{position:static;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:900px){
  .brand-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .channel-inner{min-height:56px;align-items:center;}
  .channels{display:none;}
  .channel-tools{display:none;}
  .site-header.nav-open .channels{
    display:flex;flex-direction:column;align-items:stretch;gap:0;width:100%;
    padding:6px 0;border-top:1px solid var(--line);
  }
  .site-header.nav-open .channels a{padding:13px 4px;border-bottom:1px solid var(--line);border-radius:0;}
  .site-header.nav-open .channels a.active{border-bottom-color:var(--line);color:var(--brand);}
  .site-header.nav-open .channel-tools{display:flex;flex-direction:column;align-items:stretch;gap:12px;width:100%;padding:4px 0 16px;}
  .site-header.nav-open .search-box input{width:100%;}
}
@media (max-width:767px){
  :root{--gutter:20px;}
  .brandline-inner{height:60px;}
  .article-hero{padding:32px 0 30px;}
  .article-body{padding:24px 20px;font-size:16.5px;}
  .grid-3{grid-template-columns:1fr;}
  .cta-inner{padding:26px 22px;}
  .post-nav a{max-width:100%;}
  .post-nav .pn-next{text-align:left;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:479px){
  .logo-mark{font-size:18px;}
  .logo-sub{font-size:11px;padding:3px 8px;}
  .article-body{font-size:16px;line-height:1.8;}
  .meta-row{gap:12px;}
  .btn{padding:13px 22px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .fx-up{opacity:1;transform:none;transition:none;}
  .btn,.card,.link-arrow,.card-media img{transition:none;}
  .btn:hover,.card:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#5332E8;
  --brand-deep:#3F22C4;
  --brand-soft:rgba(83,50,232,.08);
  --accent:#B8E33A;
  --ink:#141317;
  --ink-soft:#4A4750;
  --muted:#7A7681;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --line:#E6E1D9;
  --warn:#D9782B;
  --r-xs:10px;
  --r:14px;
  --r-lg:18px;
  --shadow-1:0 1px 2px rgba(20,19,23,.04);
  --shadow-2:0 14px 34px -18px rgba(20,19,23,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--brand-deep);}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid rgba(83,50,232,.45);outline-offset:2px;}
.show-for-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 布局容器与栅格微调 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px;}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px;}
.grid-x.grid-margin-y{margin-top:-24px;}
.grid-x.grid-margin-y>.cell{margin-top:24px;}
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--brand);margin-bottom:12px;}
.section-head h2{font-size:clamp(24px,2.6vw,34px);}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  background:var(--brand);color:#fff;font-weight:600;font-size:15px;line-height:1;
  transition:background-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-1);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);box-shadow:var(--shadow-2);}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand);}
.link-arrow i{transition:transform .22s var(--ease);font-size:13px;}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--paper);}
.brandline{height:72px;overflow:hidden;border-bottom:1px solid transparent;transition:height .26s var(--ease),opacity .26s var(--ease);}
.brandline-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.logo{display:inline-flex;align-items:baseline;gap:7px;}
.logo-mark{font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.logo-sub{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--brand);}
.brand-right{display:flex;align-items:center;gap:22px;}
.brand-link{font-size:14px;color:var(--ink-soft);display:inline-flex;align-items:center;gap:7px;}
.brand-link i{color:var(--brand);font-size:13px;}
.brand-link:hover{color:var(--brand);}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.site-header.is-scrolled .brandline{height:0;opacity:0;}
.channelbar{background:transparent;transition:background-color .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);border-bottom:1px solid transparent;}
.site-header.is-scrolled .channelbar{background:var(--surface);border-bottom-color:var(--line);box-shadow:0 6px 18px -14px rgba(20,19,23,.35);}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:58px;}
.channels{display:flex;align-items:center;flex-wrap:wrap;gap:26px;}
.channels a{position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:17px 0;border-bottom:2px solid transparent;}
.channels a:hover{color:var(--brand);}
.channels a.active{color:var(--brand);font-weight:700;border-bottom-color:var(--brand);}
.channel-tools{display:flex;align-items:center;gap:16px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box i{position:absolute;left:14px;font-size:13px;color:var(--muted);pointer-events:none;}
.search-box input{
  width:220px;height:40px;padding:0 14px 0 36px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),width .22s var(--ease);
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.14);}
.hot-tags{display:flex;align-items:center;gap:8px;}
.hot-tag{font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;border:1px solid var(--line);color:var(--ink-soft);background:var(--surface);transition:all .2s var(--ease);}
.hot-tag:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* ---------- 分类页头图 ---------- */
.cat-hero{position:relative;margin-top:28px;border-radius:var(--r-lg);overflow:hidden;background:var(--ink);min-height:236px;display:flex;align-items:flex-end;}
.cat-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,19,23,.90) 12%,rgba(20,19,23,.62) 52%,rgba(20,19,23,.26) 100%);}
.cat-hero-inner{position:relative;z-index:2;padding:44px 40px;max-width:820px;}
.cat-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--accent);margin-bottom:14px;}
.cat-h1{font-size:clamp(26px,3.4vw,42px);color:#fff;letter-spacing:-.02em;}
.cat-lead{margin-top:14px;font-size:16px;color:rgba(247,245,241,.86);max-width:660px;}

/* ---------- 锚点导航 ---------- */
.anchor-nav{position:sticky;top:58px;z-index:40;background:var(--paper);border-bottom:1px solid var(--line);margin-top:26px;}
.anchor-nav-inner{display:flex;align-items:center;gap:26px;overflow-x:auto;padding:0 32px;max-width:var(--wrap);margin:0 auto;scrollbar-width:none;}
.anchor-nav-inner::-webkit-scrollbar{display:none;}
.anchor-nav a{flex:0 0 auto;font-size:14px;color:var(--ink-soft);padding:15px 0;border-bottom:2px solid transparent;white-space:nowrap;}
.anchor-nav a:hover{color:var(--brand);}
.anchor-nav a.is-current{color:var(--brand);font-weight:700;border-bottom-color:var(--brand);}

/* ---------- 时间线区块 ---------- */
.sticky-card{position:sticky;top:118px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--shadow-1);}
.sticky-card h3{font-size:19px;margin-bottom:6px;}
.sticky-card .sub{font-size:13px;color:var(--muted);margin-bottom:18px;}
.point-list li{display:flex;gap:10px;padding:12px 0;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft);line-height:1.7;}
.point-list li:first-child{border-top:0;padding-top:0;}
.point-list i{color:var(--brand);font-size:13px;margin-top:5px;}
.sticky-card .btn{margin-top:20px;}

.timeline{position:relative;padding-left:38px;}
.timeline::before{content:"";position:absolute;left:12px;top:10px;bottom:14px;width:1px;background:var(--line);}
.tl-item{position:relative;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-num{position:absolute;left:-38px;top:2px;width:26px;height:26px;border-radius:50%;background:var(--surface);border:1px solid var(--line);color:var(--brand);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;}
.tl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D8D1C6;}
.tl-card h3{font-size:20px;margin-bottom:10px;}
.tl-card p{font-size:15px;color:var(--ink-soft);}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.tl-figure{margin-top:18px;border-radius:var(--r-xs);overflow:hidden;border:1px solid var(--line);}
.tl-figure img{width:100%;height:180px;object-fit:cover;}

/* ---------- 标签与徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.04em;padding:4px 11px;border-radius:999px;background:var(--brand-soft);color:var(--brand);}
.tag-line{background:transparent;border:1px solid var(--line);color:var(--ink-soft);}
.tag-accent{background:rgba(184,227,58,.28);color:#41520A;}

/* ---------- 数据条 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:0;background:var(--ink);border-radius:var(--r-lg);padding:38px 20px;color:var(--paper);}
.stat-item{padding:0 26px;border-left:1px solid rgba(247,245,241,.16);}
.stat-item:first-child{border-left:0;}
.stat-value{font-size:clamp(26px,2.6vw,36px);font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:#fff;}
.stat-value em{font-style:normal;font-size:15px;font-weight:600;color:var(--accent);margin-left:4px;}
.stat-label{margin-top:8px;font-size:13px;color:rgba(247,245,241,.68);}
.stat-underline{display:block;width:34px;height:2px;background:var(--accent);margin-top:12px;}

/* ---------- 设备适配卡 ---------- */
.device-card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.device-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D8D1C6;}
.device-card h3{font-size:20px;margin-bottom:10px;}
.device-card p{font-size:15px;color:var(--ink-soft);}
.device-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.device-list li{font-size:14px;color:var(--ink-soft);display:flex;gap:9px;}
.device-list i{color:var(--brand);font-size:12px;margin-top:6px;}
.device-card--wide{flex-direction:row;align-items:center;gap:26px;}
.device-card--wide .device-text{flex:1 1 auto;}
.device-card--wide .device-thumb{flex:0 0 220px;border-radius:var(--r-xs);overflow:hidden;border:1px solid var(--line);}
.device-card--wide .device-thumb img{width:100%;height:140px;object-fit:cover;}

/* ---------- 校验区块 ---------- */
.check-band{background:var(--ink);border-radius:var(--r-lg);padding:52px 44px;color:#EDEAE4;}
.check-band h2{color:#fff;font-size:clamp(24px,2.6vw,34px);}
.check-band .lead{margin-top:14px;color:rgba(247,245,241,.74);font-size:16px;max-width:680px;}
.check-grid{margin-top:34px;display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.check-item{border:1px solid rgba(247,245,241,.18);border-radius:var(--r);padding:22px;transition:border-color .22s var(--ease),background-color .22s var(--ease);}
.check-item:hover{border-color:rgba(184,227,58,.6);background:rgba(247,245,241,.04);}
.check-item h3{color:#fff;font-size:17px;margin-bottom:8px;}
.check-item p{font-size:14px;color:rgba(247,245,241,.72);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:22px 0 22px 18px;position:relative;font-size:17.5px;font-weight:600;color:var(--ink);transition:color .2s var(--ease);}
.faq-q::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;background:var(--brand);border-radius:2px;transition:background-color .2s var(--ease);}
.faq-q i{font-size:13px;color:var(--muted);transition:transform .22s var(--ease),color .22s var(--ease);}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease);}
.faq-a p{padding:0 40px 24px 18px;font-size:15.5px;color:var(--ink-soft);}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{display:flex;flex-direction:column;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D8D1C6;}
.rel-card h3{font-size:19px;}
.rel-card p{font-size:14.5px;color:var(--ink-soft);}
.rel-card .link-arrow{margin-top:auto;}

/* ---------- CTA 与表单 ---------- */
.cta-bar{display:flex;align-items:center;justify-content:space-between;gap:28px;background:var(--brand);border-radius:var(--r-lg);padding:34px 40px;color:#fff;flex-wrap:wrap;}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.2vw,26px);}
.cta-bar p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.86);}
.cta-bar .btn{background:#fff;color:var(--brand);}
.cta-bar .btn:hover{background:var(--ink);color:#fff;}

.form-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;}
.form-card .promise{display:flex;flex-direction:column;gap:12px;margin-top:18px;}
.form-card .promise li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-soft);}
.form-card .promise i{color:var(--brand);font-size:13px;margin-top:6px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:7px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-xs);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  appearance:none;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237A7681' d='M6 8 0 1.4 1.4 0 6 4.9 10.6 0 12 1.4z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.14);}
.field-note{font-size:12.5px;color:var(--muted);margin-top:12px;}
.field-note a{text-decoration:underline;}

/* ---------- 弹层 ---------- */
.modal-mask[hidden]{display:none;}
.modal-mask{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(20,19,23,.55);backdrop-filter:blur(4px);opacity:0;transition:opacity .24s var(--ease);}
.modal-mask.is-open{opacity:1;}
.modal-panel{position:relative;width:100%;max-width:520px;max-height:88vh;overflow-y:auto;background:var(--surface);border-radius:var(--r-lg);padding:32px;box-shadow:0 30px 60px -30px rgba(20,19,23,.6);transform:scale(.98);transition:transform .24s var(--ease);}
.modal-mask.is-open .modal-panel{transform:scale(1);}
.modal-panel h3{font-size:22px;margin-bottom:8px;}
.modal-panel .modal-sub{font-size:14.5px;color:var(--ink-soft);margin-bottom:22px;}
.modal-close{position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink-soft);}
.modal-close:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,245,241,.78);padding:66px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.f-brand .logo-mark{color:#fff;}
.f-brand .logo-sub{color:var(--accent);}
.f-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(247,245,241,.66);max-width:320px;}
.f-col h4{font-size:13px;font-weight:700;letter-spacing:.12em;color:#fff;margin-bottom:16px;}
.f-col ul{display:flex;flex-direction:column;gap:10px;}
.f-col a{font-size:14.5px;color:rgba(247,245,241,.78);}
.f-col a:hover{color:var(--accent);}
.f-contact li{display:flex;gap:10px;font-size:14.5px;color:rgba(247,245,241,.72);}
.f-contact i{color:var(--accent);font-size:13px;margin-top:6px;}
.footer-bottom{margin-top:48px;padding-top:20px;border-top:1px solid rgba(247,245,241,.14);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.55);}

/* ---------- 进场动画 ---------- */
.reveal-up{opacity:0;transform:translateY(14px);transition:opacity .26s var(--ease),transform .26s var(--ease);}
.reveal-up.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .wrap{padding:0 24px;}
  .brand-link{display:none;}
  .nav-toggle{display:flex;}
  .channels{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);padding:8px 24px 18px;display:none;}
  .channels.is-open{display:flex;}
  .channels a{padding:14px 0;border-bottom:1px solid var(--line);}
  .channels a.active{border-bottom-color:var(--line);}
  .channelbar{position:relative;}
  .hot-tags{display:none;}
  .sticky-card{position:static;}
  .site-header.is-scrolled .brandline{height:72px;opacity:1;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .stat-item:nth-child(3){border-left:0;}
  .check-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .device-card--wide{flex-direction:column;align-items:flex-start;}
  .device-card--wide .device-thumb{flex:1 1 auto;width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  body{font-size:16px;}
  .section{padding:60px 0;}
  .section.tight{padding:48px 0;}
  .cat-hero{margin-top:18px;min-height:200px;}
  .cat-hero-inner{padding:28px 22px;}
  .anchor-nav{top:58px;}
  .anchor-nav-inner{padding:0 20px;gap:20px;}
  .check-band{padding:34px 22px;}
  .cta-bar{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .form-card{padding:22px;}
  .search-box input{width:150px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .modal-mask{align-items:flex-end;padding:0;}
  .modal-panel{max-width:none;border-radius:18px 18px 0 0;max-height:92vh;}
}
@media (max-width:479px){
  .stat-band{grid-template-columns:1fr;padding:28px 22px;gap:24px;}
  .stat-item{border-left:0;padding:0;}
  .brand-right .btn-sm{display:none;}
  .timeline{padding-left:30px;}
  .tl-num{left:-30px;width:22px;height:22px;font-size:11px;}
  .timeline::before{left:10px;}
  .search-box{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  html{scroll-behavior:auto;}
  .reveal-up{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#5332E8;
  --brand-deep:#3F22C4;
  --brand-soft:rgba(83,50,232,.08);
  --accent:#B8E33A;
  --accent-ink:#2C3A05;
  --ink:#141317;
  --ink-soft:#3A3742;
  --muted:#6E6A78;
  --paper:#F7F5F1;
  --surface:#FFFFFF;
  --line:#E6E1D9;
  --line-strong:#D6CFC4;
  --radius-sm:10px;
  --radius:14px;
  --radius-lg:18px;
  --shadow-1:0 1px 2px rgba(20,19,23,.04);
  --shadow-2:0 14px 34px -18px rgba(20,19,23,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
::selection{background:var(--brand);color:#fff}
:focus-visible{outline:2px solid rgba(83,50,232,.45);outline-offset:2px;border-radius:4px}
.show-for-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brandline{background:var(--paper);height:64px;overflow:hidden;transition:height .28s var(--ease),opacity .28s var(--ease)}
.site-header.is-stuck .brandline{height:0;opacity:0}
.brandline-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:9px;color:var(--ink)}
.logo:hover{color:var(--ink)}
.logo-mark{font-size:20px;font-weight:800;letter-spacing:-.02em}
.logo-sub{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--brand);border:1px solid rgba(83,50,232,.35);border-radius:6px;padding:2px 7px;line-height:1.45}
.brand-right{display:flex;align-items:center;gap:18px}
.brand-link{font-size:13.5px;color:var(--ink-soft);display:inline-flex;align-items:center;gap:7px}
.brand-link i{color:var(--brand);font-size:12.5px}
.brand-link:hover{color:var(--brand)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:16px;transition:border-color .22s var(--ease),color .22s var(--ease)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.channelbar{background:rgba(247,245,241,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease)}
.site-header.is-stuck .channelbar{background:var(--paper);border-bottom-color:var(--line);box-shadow:0 10px 26px -22px rgba(20,19,23,.55)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:58px}
.channels{display:flex;align-items:center;gap:4px}
.channels a{position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:17px 14px;transition:color .22s var(--ease)}
.channels a::after{content:"";position:absolute;left:14px;right:14px;bottom:11px;height:2px;background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.channels a:hover{color:var(--brand)}
.channels a.active{color:var(--brand);font-weight:600}
.channels a.active::after{transform:scaleX(1)}
.channel-tools{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:9px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:0 14px;height:38px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.12)}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{border:0;outline:0;background:transparent;font-size:14px;width:186px;color:var(--ink)}
.search-box input::placeholder{color:#9C97A6}
.hot-tags{display:flex;align-items:center;gap:8px}
.hot-tag{font-size:12.5px;font-weight:600;line-height:1;padding:8px 12px;border-radius:999px;border:1px solid var(--line);color:var(--ink-soft);background:var(--surface);transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease)}
.hot-tag:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:14px 28px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-block{width:100%;padding:15px 28px}
.btn-link{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:600;color:var(--brand)}
.btn-link i{font-size:12.5px;transition:transform .22s var(--ease)}
.btn-link:hover i{transform:translateX(4px)}

/* ---------- 页头 ---------- */
main{display:block}
section[id]{scroll-margin-top:118px}
.page-head{padding:34px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-bottom:16px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.crumb .current{color:var(--ink-soft)}

.hero-banner{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:236px;display:flex;flex-direction:column;justify-content:flex-end;padding:34px 36px;background-image:url('/assets/images/coverpic/cover-2.webp');background-size:cover;background-position:center;box-shadow:var(--shadow-1)}
.hero-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,19,23,.9) 0%,rgba(20,19,23,.68) 52%,rgba(20,19,23,.32) 100%)}
.hero-banner>*{position:relative;z-index:1}
.hero-banner .kicker{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--accent);border:1px solid rgba(184,227,58,.45);border-radius:999px;padding:5px 12px;margin-bottom:16px;width:fit-content}
.hero-banner h1{color:#fff;font-size:clamp(26px,3.6vw,42px);letter-spacing:-.02em;line-height:1.2;max-width:780px}
.hero-banner p{margin-top:14px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:680px;line-height:1.75}
.intro-lead{margin-top:26px;font-size:16.5px;color:var(--ink-soft);max-width:940px;line-height:1.9}

.anchor-nav{position:sticky;top:58px;z-index:40;margin-top:30px;background:rgba(247,245,241,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-nav ul{display:flex;gap:6px;overflow-x:auto;padding:7px 0;scrollbar-width:none}
.anchor-nav ul::-webkit-scrollbar{display:none}
.anchor-nav a{display:inline-block;padding:10px 15px;font-size:14px;color:var(--ink-soft);border-radius:999px;white-space:nowrap;transition:background .22s var(--ease),color .22s var(--ease)}
.anchor-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.anchor-nav a.is-current{background:var(--brand);color:#fff}

/* ---------- 板块 ---------- */
.section{padding:88px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{font-size:clamp(24px,2.6vw,34px)}
.section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:660px;line-height:1.8}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--brand);margin-bottom:14px}

/* ---------- 版本时间线 ---------- */
.timeline{display:flex;flex-direction:column}
.tl-item{display:grid;grid-template-columns:132px minmax(0,1fr);gap:26px;padding-bottom:22px}
.tl-date{padding-top:20px;font-variant-numeric:tabular-nums}
.tl-date .d{display:block;font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.2}
.tl-date .y{display:block;font-size:12px;color:var(--muted);letter-spacing:.1em;margin-top:4px}
.tl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9D2E6}
.tl-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ver-badge{display:inline-flex;align-items:center;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:12.5px;letter-spacing:.04em;padding:5px 11px;border-radius:999px;font-variant-numeric:tabular-nums}
.tl-type{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 11px;line-height:1.4}
.tl-card h3{margin:14px 0 12px;font-size:20px;font-weight:600}
.tl-list{display:flex;flex-direction:column;gap:8px}
.tl-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-soft);line-height:1.75}
.tl-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.55}
.tl-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- 更新节奏 ---------- */
.cadence-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cadence-item{padding:30px 24px;border-left:1px solid var(--line)}
.cadence-item:first-child{border-left:0}
.cadence-item .num{font-size:clamp(26px,2.8vw,36px);font-weight:700;color:var(--ink);letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
.cadence-item .num em{font-style:normal;font-size:15px;font-weight:600;color:var(--brand);margin-left:5px;letter-spacing:0}
.cadence-item .lab{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75}
.cadence-note{margin-top:18px;font-size:13px;color:var(--muted)}

/* ---------- 升级前准备 ---------- */
.prep-layout{display:grid;grid-template-columns:1.55fr .85fr;gap:46px;align-items:start}
.prep-list{display:flex;flex-direction:column}
.prep-item{display:flex;gap:22px;padding:24px 0;border-top:1px solid var(--line)}
.prep-item:first-child{border-top:0;padding-top:0}
.prep-num{flex:0 0 auto;font-size:14px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.08em;padding-top:5px}
.prep-body h3{font-size:18px;font-weight:600;margin-bottom:7px}
.prep-body p{font-size:15.5px;color:var(--ink-soft);line-height:1.8;max-width:720px}
.prep-media{margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);border:1px solid var(--line);background:var(--surface);position:sticky;top:110px}
.prep-media img{width:100%;aspect-ratio:4/5;object-fit:cover}
.prep-media figcaption{padding:14px 18px;font-size:13px;color:var(--muted);line-height:1.7;border-top:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:2px;background:var(--brand);opacity:0;transition:opacity .22s var(--ease)}
.faq-item.open::before{opacity:1}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 18px 22px 22px;text-align:left;font-size:17.5px;font-weight:600;color:var(--ink);transition:color .22s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-q i{flex:0 0 auto;font-size:15px;color:var(--brand);transition:transform .22s var(--ease)}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .22s var(--ease),opacity .22s var(--ease)}
.faq-item.open .faq-a{opacity:1}
.faq-a-inner{padding:0 22px 24px;font-size:15.5px;color:var(--ink-soft);line-height:1.85;max-width:840px}

/* ---------- CTA 条 ---------- */
.cta-bar{background:var(--brand);border-radius:var(--radius-lg);padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:0 22px 46px -32px rgba(83,50,232,.95)}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.2vw,27px)}
.cta-bar p{color:rgba(255,255,255,.84);margin-top:9px;font-size:15px;max-width:620px}

/* ---------- 咨询表单 ---------- */
.contact-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:46px;box-shadow:var(--shadow-1)}
.contact-copy h2{font-size:clamp(22px,2.4vw,30px)}
.contact-copy p{margin-top:14px;font-size:15.5px;color:var(--ink-soft);line-height:1.85;max-width:480px}
.promise-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.promise-list li{display:flex;align-items:flex-start;gap:11px;font-size:14.5px;color:var(--ink-soft);line-height:1.7}
.promise-list i{color:var(--brand);font-size:12.5px;margin-top:6px;flex:0 0 auto}
.contact-form{display:flex;flex-direction:column}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);padding:0 14px;font-size:15px;color:var(--ink);appearance:none;-webkit-appearance:none;transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease)}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9C97A6}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(83,50,232,.12)}
.field select{background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236E6A78' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center;padding-right:40px}
.form-privacy{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.7}
.form-done{margin-top:12px;font-size:13.5px;font-weight:600;color:var(--brand)}

/* ---------- 相关内容 ---------- */
.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-links a{display:flex;align-items:center;justify-content:space-between;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;color:var(--ink);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.related-links a:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9D2E6;color:var(--ink)}
.related-links .rl-t{font-size:16.5px;font-weight:600;display:block}
.related-links .rl-s{display:block;margin-top:6px;font-size:13.5px;color:var(--muted);font-weight:400;line-height:1.7}
.related-links i{color:var(--brand);font-size:13px;flex:0 0 auto;transition:transform .22s var(--ease)}
.related-links a:hover i{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--ink);color:rgba(247,245,241,.72);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .logo{color:#fff}
.site-footer .logo:hover{color:#fff}
.site-footer .logo-mark{color:#fff}
.site-footer .logo-sub{color:var(--accent);border-color:rgba(184,227,58,.42)}
.f-brand p{margin-top:16px;font-size:14px;line-height:1.85;max-width:330px;color:rgba(247,245,241,.62)}
.f-col h4{font-size:13px;font-weight:700;letter-spacing:.12em;color:#fff;margin-bottom:18px}
.f-col ul li{margin-bottom:11px}
.f-col a{font-size:14.5px;color:rgba(247,245,241,.7)}
.f-col a:hover{color:var(--accent)}
.f-contact li{display:flex;gap:10px;font-size:14px;color:rgba(247,245,241,.7);line-height:1.7}
.f-contact i{color:var(--accent);margin-top:6px;font-size:13px;flex:0 0 auto}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,245,241,.14);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,241,.5)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .search-box input{width:140px}
  .hot-tags{display:none}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px}
  .contact-panel{grid-template-columns:1fr;gap:34px;padding:34px}
  .cadence-grid{grid-template-columns:repeat(2,1fr)}
  .cadence-item{border-top:1px solid var(--line)}
  .cadence-item:nth-child(1),.cadence-item:nth-child(2){border-top:0}
  .cadence-item:nth-child(odd){border-left:0}
  .prep-layout{grid-template-columns:1fr;gap:34px}
  .prep-media{position:static;max-width:420px}
  .prep-media img{aspect-ratio:16/10}
}
@media (max-width:980px){
  .channel-inner{display:none}
  .channelbar.open .channel-inner{display:flex;flex-direction:column;align-items:stretch;gap:0;padding:6px 20px 18px;min-height:0}
  .channels{flex-direction:column;align-items:stretch;gap:0}
  .channels a{padding:13px 2px;border-bottom:1px solid var(--line)}
  .channels a::after{display:none}
  .channel-tools{flex-direction:column;align-items:stretch;gap:12px;margin-top:14px}
  .search-box{width:100%}
  .search-box input{width:100%}
  .hot-tags{display:flex;flex-wrap:wrap}
  .nav-toggle{display:inline-flex}
  .anchor-nav{top:58px}
}
@media (max-width:767px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .section{padding:64px 0 0}
  .page-head{padding:24px 0 0}
  .hero-banner{min-height:200px;padding:24px 22px;border-radius:var(--radius)}
  .hero-banner p{font-size:14.5px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .tl-item{grid-template-columns:1fr;gap:12px;padding-bottom:18px}
  .tl-date{padding-top:6px;display:flex;align-items:baseline;gap:9px}
  .tl-date .d{font-size:18px}
  .tl-date .y{margin-top:0}
  .tl-card{padding:20px}
  .tl-card h3{font-size:18px}
  .related-links{grid-template-columns:1fr}
  .cta-bar{flex-direction:column;align-items:flex-start;gap:20px;padding:28px 24px}
  .cta-bar .btn{width:100%}
  .cadence-item{padding:24px 18px}
  .faq-q{font-size:16.5px;padding:20px 12px 20px 20px}
  .faq-a-inner{padding:0 20px 22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .f-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{margin-top:72px;padding-top:52px}
  .prep-media{max-width:100%}
}
@media (max-width:520px){
  .brand-link{display:none}
  .brandline-inner .btn-sm{display:none}
  .cadence-grid{grid-template-columns:1fr}
  .cadence-item{border-left:0}
  .cadence-item:nth-child(2){border-top:1px solid var(--line)}
  .contact-panel{padding:26px 20px}
  .hero-banner h1{font-size:26px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#5332E8;
  --brand-deep:#3E22C4;
  --brand-soft:rgba(83,50,232,.10);
  --accent:#B8E33A;
  --ink:#141317;
  --ink-soft:#4A4750;
  --muted:#8A858F;
  --paper:#F7F5F1;
  --paper-deep:#F1EDE6;
  --surface:#FFFFFF;
  --line:#E6E1D9;
  --line-strong:#DED7CC;
  --radius:14px;
  --radius-lg:18px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,19,23,.04);
  --shadow-2:0 14px 34px -18px rgba(20,19,23,.30);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --sect:clamp(58px,7.5vw,104px);
  --header-h:56px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-deep)}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0;padding:0}
input,select,textarea{font:inherit;color:inherit;margin:0}
:focus-visible{outline:2px solid rgba(83,50,232,.45);outline-offset:2px}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
@media (max-width:767px){.wrap{padding:0 20px}}
.anchor-ghost{display:block;width:0;height:0;overflow:hidden}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;
  padding:14px 28px;border-radius:var(--pill);border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;min-height:44px;line-height:1;
}
.btn:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-sm{padding:10px 18px;font-size:13.5px;min-height:38px}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);box-shadow:var(--shadow-2)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--ink);color:#fff}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px;min-height:32px}
.link-arrow i{transition:transform .22s var(--ease);font-size:12px}
.link-arrow:hover i{transform:translateX(4px)}

/* ===== 顶部导航 ===== */
.site-header{position:sticky;top:0;z-index:200}
.brandline{
  background:var(--surface);border-bottom:1px solid var(--line);
  overflow:hidden;max-height:96px;
  transition:max-height .26s var(--ease),opacity .22s var(--ease),border-color .22s var(--ease);
}
.site-header.is-scrolled .brandline{max-height:0;opacity:0;border-bottom-color:transparent}
.brandline-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:12px;padding-bottom:12px;min-height:66px}
.logo{display:inline-flex;align-items:baseline;gap:8px;color:var(--ink);text-decoration:none}
.logo-mark{font-size:21px;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.2}
.logo-sub{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);border-left:1px solid var(--line);padding-left:9px;line-height:1.4}
.brand-right{display:flex;align-items:center;gap:22px}
.brand-link{font-size:13.5px;color:var(--ink-soft);display:inline-flex;align-items:center;gap:7px;min-height:40px}
.brand-link i{color:var(--brand);font-size:13px}
.brand-link:hover{color:var(--brand)}
.nav-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;color:var(--ink);transition:border-color .2s var(--ease),background .2s var(--ease)}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.channelbar{
  background:rgba(247,245,241,.78);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled .channelbar{background:rgba(255,255,255,.94);border-bottom-color:var(--line);box-shadow:0 10px 26px -22px rgba(20,19,23,.55)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:56px}
.channels{display:flex;align-items:center;gap:26px}
.channels a{position:relative;display:inline-block;font-size:15px;font-weight:500;color:var(--ink-soft);padding:16px 0}
.channels a::after{content:"";position:absolute;left:0;right:0;bottom:9px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease)}
.channels a:hover{color:var(--ink)}
.channels a:hover::after{transform:scaleX(1)}
.channels a.active{color:var(--brand);font-weight:600}
.channels a.active::after{transform:scaleX(1)}
.channel-tools{display:flex;align-items:center;gap:14px}
.search-box{position:relative;display:flex;align-items:center}
.search-box i{position:absolute;left:13px;font-size:13px;color:var(--muted);pointer-events:none}
.search-box input{
  width:212px;height:38px;padding:0 14px 0 34px;border:1px solid var(--line);border-radius:var(--pill);
  background:var(--surface);font-size:13.5px;-webkit-appearance:none;appearance:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.14)}
.hot-tags{display:flex;gap:8px}
.hot-tag{font-size:12.5px;color:var(--ink-soft);background:var(--surface);border:1px solid var(--line);border-radius:var(--pill);padding:6px 13px;transition:all .2s var(--ease)}
.hot-tag:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.search-toggle{display:none;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;color:var(--ink-soft)}
.search-toggle:hover{color:var(--brand);border-color:var(--brand)}
.search-layer{
  position:fixed;left:0;right:0;top:0;z-index:300;background:var(--surface);
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
  transform:translateY(-100%);transition:transform .24s var(--ease);
}
.search-layer.is-open{transform:translateY(0)}
.search-layer-inner{display:flex;align-items:center;gap:12px;min-height:66px}
.search-layer-inner i{color:var(--muted)}
.search-layer input{flex:1;height:44px;border:1px solid var(--line);border-radius:var(--pill);padding:0 16px;font-size:15px}
.search-layer input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.14)}
.search-layer button{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);color:var(--ink-soft)}

/* ===== 页头 ===== */
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);padding:22px 0 18px;flex-wrap:wrap}
.crumb a{color:var(--ink-soft)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{color:#CFC8BC}
.crumb .current{color:var(--ink);font-weight:600}
.page-hero{padding-top:4px}
.hero-panel{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--ink);
  display:flex;align-items:flex-end;min-height:246px;box-shadow:var(--shadow-1);
}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.hero-mask{position:absolute;inset:0;background:linear-gradient(100deg,rgba(20,19,23,.94) 0%,rgba(20,19,23,.76) 52%,rgba(20,19,23,.42) 100%)}
.hero-body{position:relative;padding:44px 48px;max-width:880px;color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--accent);margin-bottom:14px}
.hero-body h1{font-size:clamp(26px,3.4vw,40px);font-weight:700;letter-spacing:-.02em;line-height:1.24;color:#fff}
.hero-body p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.78);max-width:700px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-chip{font-size:12.5px;color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.06);border-radius:var(--pill);padding:6px 14px}

/* ===== 锚点条 ===== */
.anchor-bar{
  position:sticky;top:var(--header-h);z-index:120;margin-top:32px;
  background:rgba(247,245,241,.93);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.anchor-inner{display:flex;gap:8px;overflow-x:auto;padding-top:10px;padding-bottom:10px;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-link{
  font-size:14px;color:var(--ink-soft);padding:8px 15px;border-radius:var(--pill);
  border:1px solid transparent;white-space:nowrap;transition:all .2s var(--ease);min-height:38px;display:inline-flex;align-items:center;
}
.anchor-link:hover{color:var(--ink);background:var(--surface);border-color:var(--line)}
.anchor-link.is-active{color:var(--brand);background:var(--brand-soft);border-color:rgba(83,50,232,.22);font-weight:600}

/* ===== 板块 ===== */
.section{padding:var(--sect) 0}
.section-alt{background:var(--paper-deep)}
.sec-head{margin-bottom:38px;max-width:780px}
.kicker{display:block;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--brand);margin-bottom:10px}
.sec-head h2{font-size:clamp(23px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3}
.sec-head p{margin-top:14px;color:var(--ink-soft);font-size:15.5px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:34px}
.sec-head-row .sec-head{margin-bottom:0}

/* ===== 核对步骤 ===== */
.step-list{display:grid;gap:14px;margin-top:8px}
.step-item{
  display:grid;grid-template-columns:72px minmax(0,1fr);gap:20px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.step-num{font-size:24px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.03em;line-height:1.3}
.step-body h3{font-size:17.5px;font-weight:700;margin-bottom:6px;line-height:1.5}
.step-body p{font-size:15px;color:var(--ink-soft);line-height:1.78}

/* ===== 问答双列 ===== */
.qa-layout{align-items:flex-start}
.qa-side .side-sticky{position:sticky;top:132px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-1)}
.side-title{font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--muted);margin-bottom:14px}
.side-nav li + li{margin-top:2px}
.side-nav a{
  display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--ink-soft);
  padding:10px 12px;border-radius:10px;border-left:2px solid transparent;
  transition:all .2s var(--ease);min-height:44px;
}
.side-nav a .idx{font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted)}
.side-nav a:hover{background:var(--paper);color:var(--ink)}
.side-nav a.is-active{color:var(--brand);border-left-color:var(--brand);background:var(--brand-soft);font-weight:600}
.side-nav a.is-active .idx{color:var(--brand)}
.side-card .btn{margin-top:20px}
.side-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);line-height:1.72}

.qa-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.qa-group{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px 10px;transition:box-shadow .24s var(--ease),border-color .24s var(--ease);scroll-margin-top:130px;
}
.qa-group:hover{border-color:var(--line-strong);box-shadow:var(--shadow-1)}
.qa-group-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.qa-group-head .dot{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.qa-group-head h3{font-size:17px;font-weight:700;line-height:1.5}
.qa-group-head .count{margin-left:auto;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.qa-item{border-top:1px solid var(--line)}
.qa-group-head + .qa-item{border-top:0}
.qa-q{
  position:relative;width:100%;display:flex;align-items:flex-start;gap:12px;text-align:left;
  padding:16px 0 16px 13px;font-size:16px;font-weight:600;line-height:1.62;color:var(--ink);
  transition:color .2s var(--ease);
}
.qa-q::before{
  content:"";position:absolute;left:0;top:19px;bottom:19px;width:3px;border-radius:2px;
  background:var(--brand);opacity:.26;transition:opacity .2s var(--ease);
}
.qa-q:hover{color:var(--brand)}
.qa-q[aria-expanded="true"]{color:var(--brand)}
.qa-q[aria-expanded="true"]::before{opacity:1}
.qa-q span{flex:1}
.qa-q i{font-size:12px;color:var(--muted);margin-top:7px;transition:transform .24s var(--ease),color .2s var(--ease)}
.qa-q[aria-expanded="true"] i{transform:rotate(180deg);color:var(--brand)}
.qa-a{overflow:hidden;max-height:0;transition:max-height .26s var(--ease)}
.qa-a-inner{padding:0 0 18px 16px;font-size:15px;color:var(--ink-soft);line-height:1.82}
.qa-a-inner strong{color:var(--ink);font-weight:600}

/* ===== 安全校验说明卡 ===== */
.safety-card{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,380px);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.safety-body{padding:44px 46px}
.safety-body h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.32}
.safety-body > p{margin-top:14px;font-size:15.5px;color:var(--ink-soft);max-width:620px}
.safety-list{margin-top:28px;display:grid;gap:0}
.safety-list li{display:grid;grid-template-columns:96px minmax(0,1fr);gap:18px;padding:16px 0;border-top:1px solid var(--line);align-items:baseline}
.safety-list li:last-child{padding-bottom:0}
.safety-list strong{font-size:15px;font-weight:700;color:var(--ink);position:relative;padding-left:12px}
.safety-list strong::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;border-radius:50%;background:var(--accent)}
.safety-list span{font-size:15px;color:var(--ink-soft);line-height:1.78}
.safety-media{position:relative;background:var(--paper-deep)}
.safety-media img{width:100%;height:100%;object-fit:cover;min-height:300px}

/* ===== 表单区 ===== */
.form-layout{align-items:flex-start}
.form-intro h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.32}
.form-intro > p{margin-top:14px;font-size:15.5px;color:var(--ink-soft);max-width:520px}
.promise-list{margin-top:26px;display:grid;gap:12px}
.promise-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-soft);align-items:flex-start}
.promise-list i{color:var(--brand);font-size:13px;margin-top:6px}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px 34px;box-shadow:var(--shadow-1);
}
.form-card h3{font-size:19px;font-weight:700;line-height:1.5}
.form-card > p{margin-top:10px;font-size:14.5px;color:var(--ink-soft)}
.form-card .mini-list{margin-top:20px;display:grid;gap:10px;padding-top:20px;border-top:1px solid var(--line)}
.form-card .mini-list li{display:flex;gap:9px;font-size:14px;color:var(--muted);align-items:flex-start}
.form-card .mini-list i{color:var(--accent);font-size:12px;margin-top:6px}
.form-card .btn{margin-top:24px}
.privacy-note{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.7}

/* ===== 相关分类 ===== */
.rel-card{
  display:flex;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.rel-thumb{width:92px;height:70px;border-radius:10px;overflow:hidden;flex:0 0 auto;background:var(--paper-deep)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body h3{font-size:16px;font-weight:700;margin-bottom:5px;color:var(--ink);line-height:1.5}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.65}
.rel-body .link-arrow{margin-top:8px;font-size:13.5px}

/* ===== 收尾 CTA ===== */
.cta-bar{
  background:var(--brand);color:#fff;border-radius:var(--radius-lg);
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{font-size:clamp(20px,2.2vw,27px);font-weight:700;line-height:1.35;color:#fff}
.cta-bar p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.82);max-width:640px}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:rgba(247,245,241,.75);padding:68px 0 0;margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:36px;padding-bottom:46px}
.f-brand .logo-mark{color:#fff}
.f-brand .logo-sub{color:var(--accent);border-left-color:rgba(255,255,255,.18)}
.f-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(247,245,241,.62);max-width:350px}
.f-col h4{font-size:13px;font-weight:700;letter-spacing:.14em;color:#fff;margin-bottom:18px}
.f-col li + li{margin-top:10px}
.f-col a{font-size:14px;color:rgba(247,245,241,.72)}
.f-col a:hover{color:var(--accent)}
.f-contact li{display:flex;gap:9px;font-size:14px;color:rgba(247,245,241,.72);line-height:1.7}
.f-contact i{color:var(--accent);font-size:13px;margin-top:6px;flex:0 0 auto}
.footer-bottom{
  border-top:1px solid rgba(247,245,241,.14);padding:20px 0 28px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,245,241,.55);
}

/* ===== 弹层 ===== */
.modal-mask{
  position:fixed;inset:0;z-index:400;background:rgba(20,19,23,.55);
  -webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal{
  position:relative;width:100%;max-width:540px;max-height:88vh;overflow-y:auto;
  background:var(--surface);border-radius:16px;padding:34px 34px 28px;
  transform:scale(.98);transition:transform .24s var(--ease);
}
.modal-mask.is-open .modal{transform:scale(1)}
.modal-close{position:absolute;right:14px;top:14px;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);color:var(--ink-soft);display:flex;align-items:center;justify-content:center;transition:all .2s var(--ease)}
.modal-close:hover{color:var(--brand);border-color:var(--brand)}
.modal h3{font-size:20px;font-weight:700;line-height:1.45;padding-right:44px}
.modal .modal-sub{margin-top:10px;font-size:14px;color:var(--ink-soft)}

/* ===== 表单字段 ===== */
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  -webkit-appearance:none;appearance:none;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(83,50,232,.14)}
.field select{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A858F' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;padding-right:40px;
}
.field .field-hint{margin-top:6px;font-size:12.5px;color:var(--muted)}
.form-actions{margin-top:22px}

/* ===== 进入视口动效 ===== */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.rel-card,.step-item,.rel-thumb img,.qa-q i,.link-arrow i{transition:none}
  .btn:hover,.rel-card:hover,.step-item:hover{transform:none}
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .hot-tags{display:none}
  .search-box input{width:168px}
  .qa-grid{grid-template-columns:1fr}
  .qa-side .side-sticky{position:static}
  .safety-card{grid-template-columns:1fr}
  .safety-media img{min-height:240px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  .brand-right .brand-link{display:none}
  .nav-toggle{display:inline-flex}
  .search-box{display:none}
  .search-toggle{display:inline-flex}
  .channels{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:150;
    background:var(--surface);flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 32px;overflow-y:auto;
    transform:translateX(-100%);transition:transform .28s var(--ease);
  }
  .channels.is-open{transform:translateX(0)}
  .channels a{font-size:18px;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .channels a::after{display:none}
  .channels a.active{color:var(--brand)}
  .hero-body{padding:32px 24px}
  .hero-chips{gap:8px}
  .step-item{grid-template-columns:52px minmax(0,1fr);gap:14px;padding:20px 20px}
  .step-num{font-size:20px}
  .safety-body{padding:30px 24px}
  .safety-list li{grid-template-columns:1fr;gap:6px}
  .cta-bar{padding:30px 24px}
  .form-card{padding:26px 22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:34px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal{max-width:none;border-radius:18px 18px 0 0;padding:30px 22px 26px;transform:translateY(18px);max-height:92vh}
  .modal-mask.is-open .modal{transform:translateY(0)}
  .rel-card{flex-direction:row}
}
@media (max-width:479px){
  body{font-size:16px}
  .anchor-bar{margin-top:24px}
  .qa-group{padding:20px 18px 8px}
  .rel-thumb{width:74px;height:60px}
  .rel-card{flex-direction:column;align-items:flex-start}
}