/* roulang page: index */
:root{
  --ink-900:#14101F;
  --ink-800:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line:#E3DCD2;
  --line-dark:rgba(255,255,255,.12);
  --orange:#FF6A2B;
  --orange-h:#E4521A;
  --orange-a:#C94310;
  --gold:#F5C453;
  --teal:#2FB8A8;
  --error:#D94A3D;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --white-text:#F8F5F0;
  --white-soft:rgba(248,245,240,.66);
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(20,16,31,.05), 0 10px 28px rgba(20,16,31,.07);
  --shadow-2:0 2px 4px rgba(20,16,31,.07), 0 18px 40px rgba(20,16,31,.12);
  --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:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
p{margin:0 0 1.1em}
h1,h2,h3,h4{margin:0;letter-spacing:0;font-weight:700}
ul,ol{margin:0;padding:0}
button{font:inherit;color:inherit}
svg{display:block}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--orange);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-paper2{background:var(--paper-2)}
.section-dark{position:relative;background:var(--ink-900);color:var(--white-text);overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(248,245,240,.10) 1px,transparent 1px);
  background-size:28px 28px;opacity:.5;
}
.section-dark .container{position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--orange);margin-bottom:12px}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--orange);border-radius:2px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.section-head h2{font-size:34px;line-height:1.28}
.section-head .head-desc{margin:10px 0 0;font-size:15px;color:var(--text-2);max-width:56em}
.section-dark .section-head h2{color:var(--white-text)}
.section-dark .head-desc{color:var(--white-soft)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;border:1.5px solid transparent;
  background:none;cursor:pointer;text-align:center;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-h);transform:translateY(-1px)}
.btn-primary:active{background:var(--orange-a);transform:translateY(0)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-ghost{color:var(--text);border-color:var(--text)}
.btn-ghost:hover{background:rgba(20,16,31,.06)}
.btn-ghost:active{background:rgba(20,16,31,.1)}
.btn-ghost-light{color:var(--white-text);border-color:rgba(248,245,240,.5)}
.btn-ghost-light:hover{background:rgba(248,245,240,.1);border-color:var(--white-text)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--orange);border-bottom:1px solid var(--orange);padding-bottom:2px;transition:border-color .2s,color .2s}
.btn-text:hover{border-bottom-width:2px;color:var(--orange-h)}
.btn-text svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:rgba(255,106,43,.12);color:var(--orange-h);white-space:nowrap}
.badge-teal{background:rgba(47,184,168,.14);color:#1E8C80}
.badge-light{background:rgba(248,245,240,.14);color:var(--white-text);border:1px solid var(--line-dark)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(248,245,240,.98);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,16,31,.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:36px;height:36px;flex:0 0 auto;color:var(--orange)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;color:var(--ink-900)}
.brand-sub{font-size:11px;font-weight:500;color:var(--text-3);margin-top:2px}
.nav-desktop{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{position:relative;padding:8px 12px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-2);transition:color .2s var(--ease),background .2s var(--ease)}
.nav-link:hover{color:var(--ink-900);background:rgba(20,16,31,.05)}
.nav-link:active{background:rgba(20,16,31,.08)}
.nav-link.is-active{color:var(--ink-900);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;background:var(--orange);border-radius:2px}
.header-actions{display:flex;align-items:center;gap:10px}
.hamburger{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-900);transition:background .2s,border-color .2s}
.hamburger:hover{background:var(--paper-2)}
.hamburger svg{width:22px;height:22px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(20,16,31,.55);z-index:85;opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:90;background:var(--paper);padding:20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;transform:translateX(100%);visibility:hidden;transition:transform .25s var(--ease),visibility .25s}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}
.drawer-close svg{width:20px;height:20px}
.drawer-link{display:block;padding:13px 14px;border-radius:var(--r-btn);font-size:16px;font-weight:500;color:var(--text-2);transition:background .2s,color .2s}
.drawer-link:hover{background:var(--paper-2);color:var(--ink-900)}
.drawer-link.is-active{background:rgba(255,106,43,.12);color:var(--orange-h);font-weight:600}
.drawer .btn{margin-top:14px}

/* hero */
.hero{position:relative;background:var(--ink-900);color:var(--white-text);overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(248,245,240,.10) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:88px 0 96px}
.hero h1{font-size:52px;line-height:1.18;font-weight:800;margin:14px 0 20px;color:var(--white-text)}
.hero-lead{font-size:18px;line-height:1.8;color:rgba(248,245,240,.82);max-width:34em;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:18px;margin:30px 0 0;font-size:13px;color:var(--white-soft);list-style:none}
.hero-metrics li{display:flex;align-items:center;gap:6px}
.hero-metrics li + li{padding-left:18px;border-left:1px solid rgba(255,255,255,.16)}
.hero-metrics b{color:var(--gold);font-size:16px;font-weight:800}
.hero-note{margin:18px 0 0;font-size:12px;color:rgba(248,245,240,.55)}
.hero-media{position:relative}
.hero-media>img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line-dark)}
.hero-float{position:absolute;right:-8px;bottom:-18px;width:232px;background:var(--paper);color:var(--text);border-radius:var(--r-sm);padding:14px 16px;box-shadow:0 18px 40px rgba(0,0,0,.35)}
.hero-float .float-label{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--orange-h)}
.hero-float .float-date{font-size:15px;font-weight:700;color:var(--ink-900);margin-top:6px}
.hero-float .float-desc{font-size:12px;line-height:1.6;color:var(--text-3);margin-top:4px}

/* pain */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px 56px}
.pain-item{padding-left:18px;border-left:2px solid var(--orange)}
.pain-num{display:block;font-size:12px;font-weight:700;color:var(--orange);margin-bottom:4px}
.pain-item h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:6px}
.pain-item p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0}
.pain-foot{margin-top:36px}

/* solution */
.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.solution-feature{grid-column:1/-1;display:grid;grid-template-columns:1.02fr 1fr;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.solution-feature:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.solution-feature .feature-media{height:100%}
.solution-feature .feature-media img{width:100%;height:100%;min-height:280px;aspect-ratio:16/10;object-fit:cover}
.solution-body{padding:34px 36px}
.solution-body h3{font-size:22px;line-height:1.4;margin:10px 0 10px}
.solution-body p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0}
.tick-list{list-style:none;margin:18px 0 22px;display:grid;gap:10px}
.tick-list li{position:relative;padding-left:26px;font-size:15px;line-height:1.7;color:var(--text-2)}
.tick-list li::before{content:"";position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;background:rgba(47,184,168,.16)}
.tick-list li::after{content:"";position:absolute;left:4px;top:10px;width:7px;height:4px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg)}
.solution-card{display:flex;flex-direction:column;padding:32px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.solution-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.solution-card h3{font-size:20px;line-height:1.4;margin:10px 0 8px}
.solution-card p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0}
.solution-card .tick-list{margin-bottom:20px}
.solution-card .card-link{margin-top:auto}

/* categories */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{display:flex;flex-direction:column;gap:8px;padding:26px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D9CFC2}
.cat-icon{width:38px;height:38px;border-radius:10px;background:rgba(255,106,43,.12);color:var(--orange-h);display:flex;align-items:center;justify-content:center;margin-bottom:6px}
.cat-icon svg{width:20px;height:20px}
.cat-card h3{font-size:17px;line-height:1.5;font-weight:600}
.cat-card p{font-size:14px;line-height:1.7;color:var(--text-2);margin:0}
.cat-card .cat-more{margin-top:auto;padding-top:10px;font-size:14px;font-weight:600;color:var(--orange)}

/* stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px}
.stat{padding:0 28px}
.stat:first-child{padding-left:0}
.stat + .stat{border-left:1px solid rgba(255,255,255,.12)}
.stat b{display:block;font-size:40px;font-weight:800;line-height:1.1;color:var(--gold)}
.stat span{display:block;margin-top:8px;font-size:13px;line-height:1.7;color:var(--white-soft)}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-thumb{display:block;overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 18px}
.news-title{font-size:18px;font-weight:600;line-height:1.5;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--orange)}
.news-excerpt{font-size:15px;line-height:1.75;color:var(--text-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--text-3)}
.news-meta .meta-time{display:inline-flex;align-items:center;gap:6px}
.news-meta svg{width:14px;height:14px}
.news-read{font-size:13px;font-weight:600;color:var(--orange);white-space:nowrap}
.news-read:hover{color:var(--orange-h)}
.empty-state{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:8px;padding:56px 20px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card)}
.empty-state svg{width:36px;height:36px;color:var(--text-3)}
.empty-state p{margin:0;font-size:15px;color:var(--text-2)}
.empty-state span{font-size:13px;color:var(--text-3)}

/* lead band */
.lead-band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lead-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;padding:44px 0}
.lead-inner h2{font-size:26px;line-height:1.35;margin-bottom:8px}
.lead-inner p{font-size:15px;line-height:1.75;color:var(--text-2);margin:0;max-width:46em}

/* faq */
.faq-list{margin-top:8px;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:16px 24px;background:none;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;transition:color .2s var(--ease)}
.faq-q:hover{color:var(--orange)}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-3);border-radius:2px;transition:transform .2s var(--ease),background .2s var(--ease),opacity .2s var(--ease)}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{margin:0;padding:0 24px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* privacy */
.privacy{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.privacy-inner{display:flex;gap:14px;max-width:900px;margin:0 auto;padding:24px 0;font-size:13px;line-height:1.7;color:var(--text-2)}
.privacy-inner svg{flex:0 0 auto;width:20px;height:20px;color:var(--teal);margin-top:3px}

/* cta band */
.cta-band{position:relative;background:var(--ink-900);color:var(--white-text);padding:76px 0;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(248,245,240,.09) 1px,transparent 1px);background-size:30px 30px;opacity:.5;pointer-events:none}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:32px;line-height:1.3;margin-bottom:10px}
.cta-inner p{margin:0;font-size:15px;line-height:1.75;color:var(--white-soft);max-width:40em}

/* footer */
.site-footer{background:var(--ink-900);color:rgba(248,245,240,.66);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--orange)}
.footer-brand .brand-name{color:var(--white-text)}
.footer-brand .brand-sub{color:rgba(248,245,240,.5)}
.footer-about{font-size:14px;line-height:1.8;color:rgba(248,245,240,.6);margin:0 0 14px;max-width:26em}
.footer-contact{font-size:13px;line-height:1.8;color:rgba(248,245,240,.5);margin:0}
.footer-title{font-size:14px;font-weight:700;color:var(--white-text);margin:0 0 16px}
.footer-links{list-style:none;display:grid;gap:10px;font-size:14px}
.footer-links a{color:rgba(248,245,240,.66)}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 calc(20px + env(safe-area-inset-bottom));display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(248,245,240,.5)}
.footer-bottom p{margin:0}

/* tabbar */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;background:rgba(248,245,240,.98);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -6px 18px rgba(20,16,31,.06)}
.tab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:60px;font-size:11px;color:var(--text-3);transition:color .2s var(--ease)}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tab-item:active{background:rgba(20,16,31,.04)}
.tab-item.is-active{color:var(--orange)}
.tab-item.is-active::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:2px;background:var(--orange);border-radius:2px}

/* modal */
.modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(20,16,31,.6)}
.modal-card{position:relative;width:100%;max-width:560px;max-height:88vh;overflow:auto;background:var(--paper);border-radius:20px;padding:32px;box-shadow:0 30px 70px rgba(20,16,31,.35)}
.modal-card h2{font-size:22px;line-height:1.4;margin-bottom:8px}
.modal-sub{font-size:14px;line-height:1.7;color:var(--text-2);margin:0 0 22px}
.modal-close{position:absolute;top:14px;right:14px;width:32px;height:32px;border-radius:8px;border:1px solid var(--line);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-2);transition:background .2s,color .2s}
.modal-close:hover{background:var(--paper-2);color:var(--text)}
.modal-close svg{width:16px;height:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:500;color:var(--text-2);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;height:46px;padding:0 14px;font-family:inherit;font-size:15px;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s}
.field textarea{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.12)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--error);background:rgba(217,74,61,.06)}
.err{display:none;margin-top:6px;font-size:13px;color:var(--error)}
.field.has-error .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:8px;margin:4px 0 16px}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--orange);flex:0 0 auto}
.check-row label{font-size:12px;line-height:1.6;color:var(--text-3)}
.check-row.has-error label{color:var(--error)}
.form-success{text-align:center;padding:28px 8px}
.form-success svg{width:52px;height:52px;color:var(--teal);margin:0 auto 14px}
.form-success h3{font-size:20px;margin-bottom:8px}
.form-success p{font-size:14px;color:var(--text-2);margin:0}

/* responsive */
@media (max-width:1279px){
  .hero h1{font-size:44px}
  .hero-inner{gap:40px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .hamburger{display:flex}
  .header-actions .btn-primary{display:none}
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:64px 0 80px}
  .hero h1{font-size:38px}
  .hero-media{max-width:560px}
  .hero-float{right:12px;bottom:-14px}
  .section{padding:72px 0}
  .section-head h2{font-size:28px}
  .solution-feature{grid-template-columns:1fr}
  .solution-feature .feature-media img{min-height:220px;aspect-ratio:16/9}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:32px}
  .stat:nth-child(3){padding-left:0;border-left:0}
  .stat:nth-child(3),.stat:nth-child(4){padding-top:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner h2{font-size:26px}
}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr)}
  .container{padding:0 20px}
  .header-inner{height:64px;gap:12px}
  .brand-name{font-size:16px}
  .hero h1{font-size:32px;line-height:1.24}
  .hero-lead{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-metrics{gap:12px}
  .hero-metrics li + li{padding-left:12px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:25px}
  .pain-grid{grid-template-columns:1fr;gap:24px}
  .solution-grid{grid-template-columns:1fr}
  .solution-feature{grid-column:auto}
  .solution-body{padding:24px 22px}
  .solution-card{padding:24px 22px}
  .cat-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;row-gap:28px}
  .stat{padding:0 16px}
  .stat b{font-size:32px}
  .lead-inner{padding:36px 0;gap:20px}
  .lead-inner .btn{width:100%}
  .faq-q{padding:14px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .privacy-inner{padding:20px 0;flex-direction:row}
  .cta-inner{gap:22px}
  .cta-inner h2{font-size:23px}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .modal{padding:0;align-items:flex-end}
  .modal-card{border-radius:20px 20px 0 0;max-width:100%;max-height:88vh;padding:26px 20px calc(26px + env(safe-area-inset-bottom))}
}
@media (max-width:519px){
  .hero h1{font-size:28px}
  .hero-float{width:200px;padding:12px 14px}
  .stats-grid{grid-template-columns:1fr}
  .stat{padding:0 !important;border-left:0 !important}
  .stat + .stat{border-top:1px solid rgba(255,255,255,.12);padding-top:20px !important;margin-top:20px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#14101F;
  --ink-2:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line:#E3DCD2;
  --orange:#FF6A2B;
  --orange-d:#E4521A;
  --orange-p:#C94310;
  --gold:#F5C453;
  --cyan:#2FB8A8;
  --red:#D94A3D;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --inv:#F8F5F0;
  --inv-2:rgba(248,245,240,.66);
  --inv-line:rgba(255,255,255,.12);
  --r-lg:16px;
  --r-md:12px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,16,31,.05),0 10px 28px rgba(20,16,31,.07);
  --sh-2:0 2px 4px rgba(20,16,31,.07),0 18px 40px rgba(20,16,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --h-header:72px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:underline;text-underline-offset:3px;transition:color .18s var(--ease)}
a:hover{color:var(--orange-d)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--inv);padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,245,240,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,16,31,.08)}
.header-inner{display:flex;align-items:center;gap:20px;height:var(--h-header)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none}
.brand-mark{width:30px;height:30px;color:var(--orange);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:0}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.08em;margin-top:1px}
.nav-desktop{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 12px;border-radius:8px;
  font-size:15px;color:var(--text-2);text-decoration:none;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(20,16,31,.05)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--orange)}
.header-actions{display:flex;align-items:center;gap:10px;flex:none}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:transparent;color:var(--text);cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.hamburger:hover{background:rgba(20,16,31,.05);border-color:var(--text-3)}
.hamburger svg{width:22px;height:22px}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-d);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--orange-p);transform:none}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-ghost{background:transparent;border-color:rgba(20,16,31,.35);color:var(--text)}
.btn-ghost:hover{background:rgba(20,16,31,.06);border-color:var(--text);color:var(--text)}
.btn-ghost-inv{background:transparent;border-color:rgba(248,245,240,.5);color:var(--inv)}
.btn-ghost-inv:hover{background:rgba(248,245,240,.1);border-color:var(--inv);color:var(--inv)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:none;padding:0;cursor:pointer;
  color:var(--orange-d);font-size:15px;font-weight:600;text-decoration:underline;text-underline-offset:4px;
  transition:gap .18s var(--ease),color .18s var(--ease);
}
.btn-link:hover{color:var(--orange-p);gap:10px}
.btn-link svg{width:16px;height:16px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none}

/* ============ drawer ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:100%;z-index:95;
  background:var(--paper);padding:24px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .25s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:transparent;
  cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(20,16,31,.05)}
.drawer-close svg{width:20px;height:20px}
.drawer-link{
  display:block;padding:14px 12px;border-radius:10px;text-decoration:none;
  color:var(--text-2);font-size:16px;border-bottom:1px solid var(--line);
}
.drawer-link:hover{background:rgba(20,16,31,.05);color:var(--text)}
.drawer-link.is-active{color:var(--orange-d);font-weight:600}
.drawer .btn{margin-top:18px}

/* ============ breadcrumb / article head ============ */
.article-top{background:var(--paper);padding-top:8px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:20px 0 8px;
}
.breadcrumb a{color:var(--text-2);text-decoration:none}
.breadcrumb a:hover{color:var(--orange-d)}
.breadcrumb .sep{opacity:.6}
.breadcrumb .current{
  display:inline-block;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-3);
}
.article-head{max-width:860px;padding-bottom:8px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
  background:rgba(255,106,43,.12);color:var(--orange-d);
}
.article-title{
  font-size:34px;font-weight:800;line-height:1.32;letter-spacing:0;
  margin:16px 0 14px;color:var(--text);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-3);
}
.meta-sep{width:1px;height:12px;background:var(--line);display:inline-block}
.article-figure{margin-top:24px;max-width:100%}
.article-figure .frame{
  aspect-ratio:16/9;border-radius:var(--r-md);overflow:hidden;background:var(--paper-2);
  box-shadow:var(--sh-1);
}
.article-figure img{width:100%;height:100%;object-fit:cover}
.figure-caption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;line-height:1.6}

/* ============ reading layout ============ */
.read-section{background:var(--paper);padding:40px 0 72px}
.read-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;align-items:start}
.article-main{max-width:760px;min-width:0}
.article-body{font-size:17px;line-height:1.9;color:var(--text);overflow-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;font-size:26px;font-weight:700;line-height:1.35;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;background:var(--orange);
}
.article-body h3{font-size:19px;font-weight:600;line-height:1.4;margin:28px 0 10px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 8px}
.article-body ul{margin:0 0 1.2em;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;line-height:1.75}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.65em;width:6px;height:6px;border-radius:1px;background:var(--orange);
}
.article-body ol{margin:0 0 1.2em;padding-left:1.35em;list-style:decimal}
.article-body ol li{margin-bottom:10px;line-height:1.75}
.article-body ol li::marker{color:var(--gold);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;border-left:3px solid var(--orange);
  background:var(--paper-2);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:16px;line-height:1.8;font-weight:500;color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body thead{background:var(--ink);color:var(--inv)}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.article-body tbody tr:nth-child(even){background:var(--paper-2)}
.article-body img{border-radius:var(--r-md);margin:24px 0;height:auto}
.article-body a{color:var(--orange-d);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--orange-p)}
.article-body code{background:var(--paper-2);padding:2px 6px;border-radius:4px;font-size:.92em}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* ============ sidebar ============ */
.article-side{position:sticky;top:calc(var(--h-header) + 24px);align-self:start;display:grid;gap:20px}
.side-card{
  background:var(--paper-2);border-radius:var(--r-lg);padding:20px 20px 8px;
  border:1px solid var(--line);
}
.side-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px;display:flex;align-items:center;gap:8px}
.side-title svg{width:16px;height:16px;color:var(--cyan)}
.rel-item{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  text-decoration:none;color:var(--text);
}
.rel-item:last-child{border-bottom:none}
.rel-item:hover .rel-name{color:var(--orange-d)}
.rel-thumb{
  width:56px;height:56px;flex:none;border-radius:8px;overflow:hidden;background:#fff;
}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-name{font-size:14px;font-weight:600;line-height:1.5;transition:color .18s var(--ease)}
.rel-time{font-size:12px;color:var(--text-3);margin-top:4px}
.side-cta{
  background:var(--ink);color:var(--inv);border-radius:var(--r-lg);padding:24px 20px;
  border:1px solid var(--inv-line);
}
.side-cta h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:8px}
.side-cta p{font-size:13px;line-height:1.7;color:var(--inv-2);margin-bottom:16px}

/* ============ article tail ============ */
.article-tail{margin-top:40px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px}
.mobile-rel{display:none}

/* ============ empty state ============ */
.empty-state{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 28px;text-align:center;
}
.empty-state svg{width:44px;height:44px;color:var(--text-3);margin:0 auto 14px}
.empty-title{font-size:19px;font-weight:700;margin-bottom:6px}
.empty-desc{font-size:15px;color:var(--text-2);margin-bottom:22px}

/* ============ CTA band ============ */
.cta-band{
  position:relative;background:var(--ink);color:var(--inv);padding:72px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:24px 24px;opacity:.9;
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:30px;font-weight:700;line-height:1.35;margin-bottom:8px}
.cta-inner p{font-size:15px;color:var(--inv-2);line-height:1.75;max-width:56ch}

/* ============ FAQ ============ */
.faq-section{padding:96px 0;background:var(--paper)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.section-head h2{font-size:34px;font-weight:700;line-height:1.28}
.section-head .sub{font-size:15px;color:var(--text-2);line-height:1.75;max-width:52ch;margin-top:8px}
.faq-list{background:var(--paper-2);border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:16px 22px;background:none;border:none;cursor:pointer;
  text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6;
  transition:background-color .18s var(--ease);
}
.faq-q:hover{background:rgba(255,106,43,.06)}
.faq-icon{
  width:20px;height:20px;flex:none;color:var(--text-2);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--orange)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ============ privacy ============ */
.privacy-note{background:var(--paper-2);padding:22px 0;border-top:1px solid var(--line)}
.privacy-inner{display:flex;gap:12px;align-items:flex-start;max-width:900px;font-size:13px;line-height:1.7;color:var(--text-2)}
.privacy-inner svg{width:20px;height:20px;flex:none;color:var(--cyan);margin-top:2px}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:var(--inv-2);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--inv)}
.footer-brand .brand-mark{color:var(--orange)}
.footer-brand .brand-name{color:var(--inv)}
.footer-brand .brand-sub{color:var(--inv-2)}
.footer-about{font-size:14px;line-height:1.8;margin-bottom:14px;max-width:36ch}
.footer-contact{font-size:13px;line-height:1.8;color:rgba(248,245,240,.5)}
.footer-title{font-size:14px;font-weight:700;color:var(--inv);margin-bottom:14px;letter-spacing:.02em}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--inv-2);text-decoration:none}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--inv-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(248,245,240,.5);
}

/* ============ modal ============ */
.modal{position:fixed;inset:0;z-index:120;display:none}
.modal.is-open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(20,16,31,.55)}
.modal-wrap{position:relative;height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
.modal-card{
  position:relative;width:100%;max-width:560px;background:var(--paper);
  border-radius:20px;padding:32px;box-shadow:var(--sh-2);max-height:88vh;overflow-y:auto;
}
.modal-close{
  position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:8px;
  border:none;background:transparent;cursor:pointer;color:var(--text-2);
  display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{background:rgba(20,16,31,.06);color:var(--text)}
.modal-close svg{width:18px;height:18px}
.modal-card h2{font-size:22px;font-weight:700;line-height:1.4;margin-bottom:6px}
.modal-card .modal-sub{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:6px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field input,.field select{height:46px;padding:0 14px}
.field textarea{resize:vertical;min-height:96px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--red);background:rgba(217,74,61,.06)}
.field-error{display:none;font-size:13px;color:var(--red);margin-top:6px}
.field.has-error .field-error{display:block}
.check-row{display:flex;gap:8px;align-items:flex-start;margin:16px 0 12px}
.check-row input{width:16px;height:16px;margin-top:3px;accent-color:var(--orange);flex:none}
.check-row label{font-size:12px;color:var(--text-2);line-height:1.6}
.form-success{text-align:center;padding:26px 0}
.form-success svg{width:52px;height:52px;color:var(--cyan);margin:0 auto 14px}
.form-success h3{font-size:19px;font-weight:700;margin-bottom:6px}
.form-success p{font-size:14px;color:var(--text-2)}

/* ============ mobile tabbar ============ */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(248,245,240,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(20,16,31,.06);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr);height:60px}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);text-decoration:none;background:none;border:none;cursor:pointer;font-family:inherit;
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--text-2)}
.tab-item.is-active{color:var(--orange)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;border-radius:2px;background:var(--orange);
}

/* ============ responsive ============ */
@media (max-width:1279px){
  .container{padding:0 28px}
  .read-layout{gap:36px;grid-template-columns:minmax(0,1fr) 260px}
}
@media (max-width:1023px){
  .nav-desktop{display:none}
  .hamburger{display:flex}
  .header-actions .btn-sm{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .read-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-side{position:static}
  .mobile-rel{display:block;margin-top:8px}
  .article-title{font-size:28px}
  .section-head h2{font-size:28px}
  .cta-inner h2{font-size:26px}
  .faq-section{padding:72px 0}
}
@media (max-width:767px){
  body{padding-bottom:64px}
  .mobile-tabbar{display:block}
  .container{padding:0 20px}
  .article-title{font-size:24px;line-height:1.36}
  .breadcrumb .current{max-width:26ch}
  .read-section{padding:28px 0 56px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:22px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .cta-band{padding:56px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .faq-section{padding:56px 0}
  .section-head h2{font-size:24px}
  .modal-wrap{padding:0;align-items:flex-end}
  .modal-card{max-width:none;border-radius:20px 20px 0 0;padding:26px 20px 32px;max-height:88vh}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .site-footer{padding:48px 0 24px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px}
  .article-tail .btn{width:100%}
}
@media (max-width:479px){
  .brand-sub{display:none}
  .article-meta{font-size:12px}
  .footer-grid{grid-template-columns:1fr}
  .tab-item{font-size:10px}
  .article-figure .frame{aspect-ratio:4/3}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --ink:#14101F;
  --ink-2:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line:#E3DCD2;
  --orange:#FF6A2B;
  --orange-hover:#E4521A;
  --orange-press:#C94310;
  --orange-soft:rgba(255,106,43,.12);
  --gold:#F5C453;
  --teal:#2FB8A8;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --dark-line:rgba(255,255,255,.12);
  --light-text:#F8F5F0;
  --light-text-2:rgba(248,245,240,.66);
  --r-card:16px;
  --r-sm:12px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(20,16,31,.05),0 10px 28px rgba(20,16,31,.07);
  --shadow-2:0 2px 4px rgba(20,16,31,.07),0 18px 40px rgba(20,16,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;border-bottom:1px solid rgba(27,23,37,.28);transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--orange);border-bottom-color:var(--orange);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:16px;
  font-weight:600;
  border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange);}
.btn-primary:hover{background:var(--orange-hover);border-color:var(--orange-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--orange-press);border-color:var(--orange-press);transform:translateY(0);}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(27,23,37,.5);}
.btn-ghost:hover{border-color:var(--text);background:rgba(20,16,31,.06);color:var(--text);}
.btn-ghost-dark{background:transparent;color:var(--light-text);border-color:rgba(248,245,240,.5);}
.btn-ghost-dark:hover{background:rgba(248,245,240,.08);border-color:var(--light-text);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:8px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--orange);
  font-weight:600;
  font-size:15px;
  border-bottom:1px solid rgba(255,106,43,.5);
  padding-bottom:2px;
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.link-arrow:hover{border-bottom-width:2px;border-bottom-color:var(--orange);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(248,245,240,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,16,31,.08);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  border-bottom:0;
  flex-shrink:0;
}
.brand:hover{border-bottom:0;}
.brand-mark{width:30px;height:30px;color:var(--orange);flex-shrink:0;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:800;color:var(--text);letter-spacing:0;}
.brand-sub{font-size:11px;color:var(--text-3);font-weight:500;}
.nav-desktop{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-bottom:0;
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(20,16,31,.05);border-bottom:0;}
.nav-link.is-active{color:var(--text);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  background:var(--orange);
  border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.hamburger{
  display:none;
  width:42px;height:42px;
  align-items:center;
  justify-content:center;
  border-radius:10px;
  color:var(--text);
  border:1px solid var(--line);
  background:var(--paper);
}
.hamburger svg{width:22px;height:22px;}
.hamburger:hover{background:var(--paper-2);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.55);
  z-index:100;opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:320px;max-width:100%;
  background:var(--paper);
  z-index:101;
  padding:24px;
  transform:translateX(100%);
  transition:transform .25s var(--ease);
  overflow-y:auto;
  box-shadow:-12px 0 40px rgba(20,16,31,.18);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-title{font-size:15px;font-weight:700;color:var(--text-2);}
.drawer-close{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid var(--line);color:var(--text-2);
}
.drawer-close:hover{background:var(--paper-2);}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:22px;}
.drawer-nav a{
  display:block;padding:13px 12px;border-radius:10px;font-size:16px;font-weight:500;
  color:var(--text-2);border-bottom:0;
}
.drawer-nav a:hover{background:var(--paper-2);color:var(--text);border-bottom:0;}
.drawer-nav a.is-active{color:var(--orange);background:var(--orange-soft);font-weight:600;}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(100deg,rgba(20,16,31,.96) 0%,rgba(20,16,31,.88) 46%,rgba(20,16,31,.62) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:var(--light-text);
  padding:32px 0 72px;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(248,245,240,.5) 1px,transparent 1px);
  background-size:26px 26px;
  opacity:.05;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--light-text-2);margin-bottom:36px;
}
.breadcrumb a{color:var(--light-text-2);border-bottom:0;}
.breadcrumb a:hover{color:var(--gold);border-bottom:0;}
.breadcrumb .sep{color:rgba(248,245,240,.4);}
.breadcrumb .current{color:var(--light-text);}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:56px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--dark-line);
  background:rgba(255,255,255,.06);
  font-size:12px;font-weight:600;color:var(--gold);
  margin-bottom:20px;
}
.eyebrow svg{width:14px;height:14px;}
.page-hero h1{
  font-size:52px;
  line-height:1.18;
  font-weight:800;
  color:#fff;
  margin-bottom:20px;
}
.page-hero h1 em{
  font-style:normal;
  color:var(--gold);
}
.hero-sub{
  font-size:18px;
  line-height:1.75;
  color:var(--light-text-2);
  max-width:640px;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  font-size:13px;color:var(--light-text-2);
}
.hero-meta .num{
  font-variant-numeric:tabular-nums;
  color:var(--gold);
  font-weight:800;
  font-size:18px;
  margin-right:5px;
}
.hero-meta .divider{width:1px;height:16px;background:var(--dark-line);}
.hero-figure{
  position:relative;
  border-radius:var(--r-card);
  overflow:visible;
}
.hero-figure img{
  width:100%;
  aspect-ratio:5/4;
  object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--dark-line);
}
.hero-float{
  position:absolute;
  right:-12px;
  top:-16px;
  background:var(--paper);
  color:var(--text);
  border-radius:var(--r-sm);
  padding:12px 16px;
  box-shadow:-8px 12px 28px rgba(20,16,31,.35);
  min-width:170px;
}
.hero-float .tag{
  display:inline-block;
  font-size:11px;font-weight:700;
  color:var(--orange);
  background:var(--orange-soft);
  padding:2px 8px;border-radius:999px;
  margin-bottom:6px;
}
.hero-float .date{font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;}
.hero-float .note{font-size:12px;color:var(--text-3);margin-top:2px;}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section-paper{background:var(--paper);}
.section-paper2{background:var(--paper-2);}
.section-dark{
  position:relative;
  background:var(--ink);
  color:var(--light-text);
  padding:96px 0;
  overflow:hidden;
}
.section-dark::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(248,245,240,.5) 1px,transparent 1px);
  background-size:30px 30px;
  opacity:.04;pointer-events:none;
}
.section-dark .container{position:relative;z-index:1;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:40px;
}
.section-head h2{
  font-size:34px;
  line-height:1.28;
  font-weight:700;
  position:relative;
  padding-left:18px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  border-radius:3px;
  background:var(--orange);
}
.section-head p{
  font-size:15px;
  color:var(--text-2);
  max-width:520px;
  line-height:1.75;
}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:var(--light-text-2);}

/* ---------- 侧栏 + 步骤布局 ---------- */
.split-layout{
  display:grid;
  grid-template-columns:240px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.side-nav{
  position:sticky;
  top:96px;
  border-left:1px solid var(--line);
  padding-left:0;
}
.side-nav-title{
  font-size:12px;
  font-weight:700;
  color:var(--text-3);
  letter-spacing:.06em;
  padding-left:18px;
  margin-bottom:12px;
}
.side-nav ul{display:flex;flex-direction:column;}
.side-nav a{
  display:block;
  padding:10px 14px 10px 18px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:0;
  border-left:2px solid transparent;
  margin-left:-1px;
  border-radius:0 8px 8px 0;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.side-nav a:hover{color:var(--text);background:rgba(20,16,31,.04);border-bottom:0;}
.side-nav a.is-current{color:var(--orange);border-left-color:var(--orange);font-weight:600;background:var(--orange-soft);}
.anchor-strip{display:none;}

.step-list{display:flex;flex-direction:column;gap:28px;counter-reset:step;}
.step{
  display:grid;
  grid-template-columns:64px minmax(0,1fr);
  gap:20px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
  scroll-margin-top:100px;
}
.step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#d8cfc2;}
.step-num{
  font-size:28px;
  font-weight:800;
  color:var(--gold);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  padding-top:2px;
}
.step-body h3{
  font-size:22px;
  font-weight:600;
  line-height:1.4;
  margin-bottom:10px;
  color:var(--text);
}
.step-body p{
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  margin-bottom:14px;
}
.step-body p:last-child{margin-bottom:0;}
.step-points{display:flex;flex-direction:column;gap:9px;margin-top:4px;}
.step-points li{
  display:flex;
  gap:10px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.75;
}
.step-points li svg{
  width:18px;height:18px;
  flex-shrink:0;
  margin-top:3px;
  color:var(--teal);
}
.step-figure{
  margin-top:16px;
  border-radius:var(--r-sm);
  overflow:hidden;
  border:1px solid var(--line);
}
.step-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.step-figure figcaption{
  font-size:13px;
  color:var(--text-3);
  padding:10px 12px;
  background:var(--paper-2);
}

/* ---------- 要点卡片 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.info-card{
  display:flex;
  flex-direction:column;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.info-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.info-card-body{
  padding:22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.badge{
  display:inline-block;
  align-self:flex-start;
  font-size:12px;
  font-weight:600;
  padding:3px 10px;
  border-radius:999px;
  background:var(--orange-soft);
  color:var(--orange);
  margin-bottom:12px;
}
.info-card h3{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.info-card p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:16px;
}
.info-card .link-arrow{margin-top:auto;align-self:flex-start;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:var(--paper-2);
  border-radius:var(--r-card);
  padding:22px 26px;
  margin-top:32px;
  border:1px solid var(--line);
}
.notice svg{width:22px;height:22px;color:var(--orange);flex-shrink:0;margin-top:2px;}
.notice h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.notice p{font-size:15px;color:var(--text-2);line-height:1.8;}

/* ---------- 分类互链 ---------- */
.cat-links{display:flex;flex-wrap:wrap;gap:12px;}
.cat-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 20px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
  transition:all .2s var(--ease);
}
.cat-pill:hover{
  color:var(--orange);
  border-color:var(--orange);
  background:var(--orange-soft);
  transform:translateY(-1px);
}
.cat-pill.is-current{
  background:var(--orange);
  border-color:var(--orange);
  color:#fff;
  cursor:default;
  pointer-events:none;
  font-weight:600;
}
.cat-pill svg{width:15px;height:15px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 26px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-q:hover{color:var(--orange);background:rgba(255,106,43,.05);}
.faq-icon{
  position:relative;
  width:20px;height:20px;
  flex-shrink:0;
  transition:transform .22s var(--ease);
  color:var(--text-3);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:9px;height:2px;}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--orange);}
.faq-item.is-open .faq-q{color:var(--orange);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s var(--ease);
}
.faq-a p{
  padding:0 26px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}

/* ---------- 隐私说明条 ---------- */
.privacy-bar{
  background:var(--paper-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:26px 0;
}
.privacy-inner{
  display:flex;
  gap:16px;
  align-items:flex-start;
  max-width:900px;
}
.privacy-inner svg{
  width:22px;height:22px;
  color:var(--teal);
  flex-shrink:0;
  margin-top:3px;
}
.privacy-inner p{
  font-size:13px;
  line-height:1.7;
  color:var(--text-2);
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--ink);
  color:var(--light-text);
  padding:72px 0;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;
  background-image:radial-gradient(rgba(248,245,240,.5) 1px,transparent 1px);
  background-size:28px 28px;
  opacity:.05;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}
.cta-inner h2{
  font-size:30px;
  line-height:1.3;
  font-weight:700;
  margin-bottom:10px;
  color:#fff;
}
.cta-inner p{
  font-size:16px;
  color:var(--light-text-2);
  line-height:1.75;
  max-width:560px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--light-text-2);
  padding:72px 0 32px;
  border-top:1px solid var(--dark-line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1.1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--dark-line);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{color:var(--gold);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(248,245,240,.5);}
.footer-about{font-size:14px;line-height:1.8;margin-bottom:14px;color:var(--light-text-2);}
.footer-contact{font-size:13px;line-height:1.9;color:rgba(248,245,240,.5);}
.footer-title{
  font-size:14px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(248,245,240,.66);
  border-bottom:0;
}
.footer-links a:hover{color:var(--orange);border-bottom:0;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  padding-top:26px;
  font-size:13px;
  color:rgba(248,245,240,.45);
}

/* ---------- 底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:80;
  background:rgba(248,245,240,.98);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(20,16,31,.08);
}
.tabbar-inner{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  height:60px;
}
.tab-item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--text-3);
  border-bottom:0;
  transition:color .2s var(--ease);
}
.tab-item svg{width:22px;height:22px;}
.tab-item:hover{color:var(--text);border-bottom:0;}
.tab-item.is-active{color:var(--orange);font-weight:600;}
.tab-item.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  background:var(--orange);
  border-radius:0 0 2px 2px;
}

/* ---------- 弹层表单 ---------- */
.modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
}
.modal.is-open{display:block;}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(20,16,31,.55);
  opacity:0;
  transition:opacity .25s var(--ease);
}
.modal.is-open .modal-mask{opacity:1;}
.modal-dialog{
  position:relative;
  z-index:1;
  width:560px;
  max-width:calc(100% - 32px);
  margin:8vh auto 0;
  background:var(--paper);
  border-radius:20px;
  padding:32px;
  box-shadow:0 24px 70px rgba(20,16,31,.4);
  transform:translateY(16px) scale(.98);
  opacity:0;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
  max-height:84vh;
  overflow-y:auto;
}
.modal.is-open .modal-dialog{transform:translateY(0) scale(1);opacity:1;}
.modal-close{
  position:absolute;
  top:16px;right:16px;
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  color:var(--text-3);
}
.modal-close:hover{background:var(--paper-2);color:var(--text);}
.modal-close svg{width:18px;height:18px;}
.modal-dialog h2{font-size:22px;font-weight:700;margin-bottom:8px;}
.modal-desc{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:22px;}
.form-field{margin-bottom:16px;}
.form-field label{
  display:block;
  font-size:13px;
  color:var(--text-3);
  font-weight:500;
  margin-bottom:6px;
}
.form-field input,
.form-field select,
.form-field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:#fff;
  font-size:15px;
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:96px;line-height:1.7;}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  outline:none;
  border-color:var(--orange);
  box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea{
  border-color:#D94A3D;
  background:rgba(217,74,61,.08);
}
.form-error{
  display:none;
  font-size:13px;
  color:#D94A3D;
  margin-top:5px;
}
.form-field.has-error .form-error{display:block;}
.form-consent{
  display:flex;
  gap:9px;
  align-items:flex-start;
  margin:18px 0 16px;
}
.form-consent input{
  width:16px;height:16px;
  margin-top:3px;
  accent-color:var(--orange);
  flex-shrink:0;
}
.form-consent label{
  font-size:12px;
  line-height:1.65;
  color:var(--text-3);
}
.form-success{
  display:none;
  text-align:center;
  padding:36px 8px 24px;
}
.form-success svg{
  width:52px;height:52px;
  color:var(--teal);
  margin:0 auto 16px;
}
.form-success h3{font-size:19px;font-weight:700;margin-bottom:8px;}
.form-success p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:44px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .header-actions .btn{display:none;}
  .split-layout{grid-template-columns:minmax(0,1fr);gap:28px;}
  .side-nav{display:none;}
  .anchor-strip{
    display:flex;
    gap:8px;
    overflow-x:auto;
    padding-bottom:8px;
    margin-bottom:8px;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .anchor-strip::-webkit-scrollbar{display:none;}
  .anchor-strip a{
    flex:0 0 auto;
    padding:8px 16px;
    border-radius:999px;
    border:1px solid var(--line);
    background:var(--paper);
    font-size:14px;
    color:var(--text-2);
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  .anchor-strip a:hover{color:var(--orange);border-color:var(--orange);border-bottom-color:var(--orange);}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .hero-figure{max-width:520px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .section{padding:72px 0;}
  .section-dark{padding:72px 0;}
  .page-hero{padding:24px 0 56px;}
}
@media (max-width:767px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
  .tabbar{display:block;}
  .container{padding:0 16px;}
  .page-hero h1{font-size:34px;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:12px;font-size:12px;}
  .hero-meta .divider{display:none;}
  .hero-float{right:8px;top:8px;padding:10px 12px;min-width:140px;}
  .section{padding:56px 0;}
  .section-dark{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px;}
  .section-head h2{font-size:26px;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .step{grid-template-columns:minmax(0,1fr);gap:10px;padding:22px;}
  .step-num{font-size:24px;}
  .step-body h3{font-size:19px;}
  .cta-inner h2{font-size:24px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .modal-dialog{
    width:100%;
    max-width:100%;
    margin:0;
    position:fixed;
    left:0;right:0;bottom:0;
    border-radius:20px 20px 0 0;
    max-height:88vh;
    transform:translateY(100%);
    padding:26px 20px calc(26px + env(safe-area-inset-bottom));
  }
  .modal.is-open .modal-dialog{transform:translateY(0);}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 16px;}
  .breadcrumb{margin-bottom:24px;font-size:12px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:479px){
  .page-hero h1{font-size:29px;}
  .hero-float{display:none;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .cat-pill{font-size:14px;padding:9px 15px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink:#14101F;
  --ink-2:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line:#E3DCD2;
  --line-dark:rgba(255,255,255,.12);
  --orange:#FF6A2B;
  --orange-hover:#E4521A;
  --orange-active:#C94310;
  --orange-soft:rgba(255,106,43,.12);
  --gold:#F5C453;
  --teal:#2FB8A8;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --on-dark:#F8F5F0;
  --on-dark-2:rgba(248,245,240,.66);
  --danger:#D94A3D;
  --radius-card:16px;
  --radius-sm:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(20,16,31,.05),0 10px 28px rgba(20,16,31,.07);
  --shadow-2:0 2px 4px rgba(20,16,31,.07),0 18px 40px rgba(20,16,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --space:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;transition:color .2s var(--ease)}
a:hover{color:var(--orange)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:52px;line-height:1.18;font-weight:800}
h2{font-size:34px;line-height:1.28;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
p{line-height:1.85}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:16px;font-weight:600;text-decoration:none;cursor:pointer;
  border:1.5px solid transparent;background:none;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-primary:hover{background:var(--orange-hover);border-color:var(--orange-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--orange-active);border-color:var(--orange-active);transform:translateY(0)}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--ink)}
.btn-ghost:hover{background:rgba(27,23,37,.06);color:var(--text)}
.btn-ghost-dark{background:transparent;color:var(--on-dark);border-color:rgba(248,245,240,.5)}
.btn-ghost-dark:hover{background:rgba(248,245,240,.1);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--orange);font-weight:500;font-size:15px;text-decoration:underline;
  text-decoration-thickness:1px;text-underline-offset:4px;background:none;border:0;padding:0;cursor:pointer;
}
.link-more svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.link-more:hover{color:var(--orange-hover);text-decoration-thickness:2px}
.link-more:hover svg{transform:translateX(4px)}

/* badges */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--orange-soft);color:var(--orange);letter-spacing:0;
}
.badge-dark{background:transparent;border:1px solid var(--line-dark);color:var(--on-dark-2);font-weight:500}
.badge-teal{background:rgba(47,184,168,.12);color:#1F8D81}

/* header */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,245,240,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,16,31,.08)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{width:30px;height:30px;color:var(--orange);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:0}
.brand-sub{font-size:11px;color:var(--text-3);font-weight:500;margin-top:2px}
.nav-desktop{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  text-decoration:none;padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--text);cursor:pointer;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.hamburger:hover{border-color:var(--orange);color:var(--orange)}
.hamburger svg{width:22px;height:22px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(20,16,31,.55);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:100%;
  background:var(--paper);z-index:90;padding:24px;
  transform:translateX(100%);transition:transform .25s var(--ease);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:38px;height:38px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text)}
.drawer-close svg{width:20px;height:20px}
.drawer-link{display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--text);text-decoration:none;border-bottom:1px solid var(--line)}
.drawer-link:hover{color:var(--orange)}
.drawer-link.is-active{color:var(--orange);font-weight:600}
.drawer .btn{margin-top:20px}

/* breadcrumb */
.crumb{background:var(--paper);padding:20px 0 8px;font-size:13px;color:var(--text-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li::after{content:"/";color:var(--text-3)}
.crumb li:last-child::after{display:none}
.crumb a{color:var(--text-2);text-decoration:none}
.crumb a:hover{color:var(--orange)}
.crumb .current{color:var(--text-3);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* page hero */
.page-hero{background:var(--paper);padding:32px 0 56px}
.page-hero .badge{margin-bottom:18px}
.page-hero h1{max-width:900px;color:var(--text)}
.page-hero h1 .hl{color:var(--orange)}
.page-hero .lead{margin-top:20px;max-width:720px;font-size:18px;line-height:1.75;color:var(--text-2)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text-2);
}
.chip strong{color:var(--text);font-weight:600}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--gold);flex:0 0 auto}

/* wide figure */
.wide-figure{padding:0 0 8px;background:var(--paper)}
.wide-figure .frame{
  position:relative;aspect-ratio:21/9;border-radius:var(--radius-card);overflow:hidden;
  background:var(--ink-2);box-shadow:var(--shadow-1);
}
.wide-figure img{width:100%;height:100%;object-fit:cover;border-radius:0}
.wide-figure figcaption{margin-top:12px;font-size:13px;color:var(--text-3);text-align:center}
.wide-figure .glow{
  position:absolute;inset:auto 0 0 0;padding:28px 32px;
  background:linear-gradient(to top,rgba(20,16,31,.82),rgba(20,16,31,0));
  color:var(--on-dark);
}
.wide-figure .glow p{font-size:15px;color:var(--on-dark-2);margin-top:6px;max-width:640px}
.wide-figure .glow strong{font-size:20px;font-weight:700;display:block}

/* sections */
.section{padding:var(--space) 0}
.section-paper-2{background:var(--paper-2)}
.section-dark{background:var(--ink);color:var(--on-dark);position:relative}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:26px 26px;opacity:.05;
}
.section-dark > .container{position:relative;z-index:1}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:44px}
.section-head h2{max-width:760px}
.section-head .sub{margin-top:12px;font-size:15px;color:var(--text-2);max-width:660px}
.section-dark .section-head .sub{color:var(--on-dark-2)}

/* zigzag */
.zigzag{display:flex;flex-direction:column;gap:56px}
.zigzag-item{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.zigzag-media{position:relative}
.zigzag-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-1)}
.zigzag-media .num{
  position:absolute;left:-12px;top:-12px;width:52px;height:52px;border-radius:14px;
  background:var(--paper);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;color:var(--gold);box-shadow:var(--shadow-1);
}
.zigzag-body h3{margin-bottom:14px}
.zigzag-body p{font-size:16px;line-height:1.85;color:var(--text-2);margin-bottom:14px;max-width:72ch}
.zigzag-body .link-more{margin-top:6px}
.zigzag-item.is-reverse .zigzag-media{order:2}
.zigzag-item.is-reverse .zigzag-body{order:1}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.stat{padding:8px 28px;border-left:1px solid var(--line-dark)}
.stat:first-child{border-left:0;padding-left:0}
.stat .idx{font-size:12px;color:var(--gold);font-weight:700;letter-spacing:0}
.stat .val{font-size:24px;font-weight:800;color:var(--gold);margin-top:6px;line-height:1.3}
.stat .val small{font-size:14px;color:var(--on-dark-2);font-weight:500;margin-left:6px}
.stat .desc{font-size:13px;line-height:1.7;color:var(--on-dark-2);margin-top:8px}

/* type cards */
.type-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.type-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.type-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6CEC2}
.type-icon{
  width:44px;height:44px;border-radius:12px;background:var(--paper-2);
  display:flex;align-items:center;justify-content:center;color:var(--orange);margin-bottom:18px;
}
.type-icon svg{width:22px;height:22px}
.type-card h3{font-size:19px;margin-bottom:10px}
.type-card p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.type-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.type-card .tags span{font-size:12px;color:var(--text-2);background:var(--paper-2);border-radius:999px;padding:4px 10px}
.type-card .link-more{margin-top:auto}

/* faq */
.faq-wrap{background:var(--paper-2);border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;font-size:16px;font-weight:600;color:var(--text);min-height:56px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--orange)}
.faq-item summary .ic{
  flex:0 0 auto;width:20px;height:20px;color:var(--text-3);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary{color:var(--orange)}
.faq-item[open] summary .ic{transform:rotate(45deg);color:var(--orange)}
.faq-item .answer{padding:0 26px 22px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:78ch}

/* related cats */
.cat-pills{display:flex;flex-wrap:wrap;gap:12px}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:15px;font-weight:500;color:var(--text);
  text-decoration:none;transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.cat-pill:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-1px)}
.cat-pill.is-current{background:var(--orange);border-color:var(--orange);color:#fff;cursor:default}
.cat-pill.is-current:hover{color:#fff;transform:none}
.cat-pill .mark{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.6}

/* cta band */
.cta-band{
  background:var(--ink-2);color:var(--on-dark);border-radius:var(--radius-card);
  padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;opacity:.06;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{font-size:28px;color:var(--on-dark)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--on-dark-2);max-width:560px}

/* privacy */
.privacy-bar{background:var(--paper-2);padding:28px 0;border-top:1px solid var(--line)}
.privacy-inner{display:flex;gap:14px;align-items:flex-start;max-width:900px}
.privacy-inner .shield{flex:0 0 auto;color:var(--teal);margin-top:3px}
.privacy-inner .shield svg{width:22px;height:22px}
.privacy-inner p{font-size:13px;line-height:1.7;color:var(--text-2)}

/* footer */
.site-footer{background:var(--ink);color:var(--on-dark);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--orange)}
.footer-brand .brand-name{color:var(--on-dark)}
.footer-brand .brand-sub{color:var(--on-dark-2)}
.footer-about{font-size:14px;line-height:1.8;color:var(--on-dark-2);max-width:340px}
.footer-contact{margin-top:14px;font-size:13px;line-height:1.8;color:var(--on-dark-2)}
.footer-title{font-size:14px;font-weight:600;color:var(--on-dark);margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--on-dark-2);text-decoration:none}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
}
.footer-bottom p{font-size:13px;color:var(--on-dark-2)}

/* modal */
.modal-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.55);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.modal-mask.is-open{opacity:1;visibility:visible}
.modal-card{
  width:100%;max-width:560px;background:var(--paper);border-radius:20px;padding:32px;
  box-shadow:0 30px 80px rgba(20,16,31,.35);position:relative;
  transform:translateY(12px);transition:transform .24s var(--ease);
  max-height:88vh;overflow-y:auto;
}
.modal-mask.is-open .modal-card{transform:translateY(0)}
.modal-close{
  position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:8px;
  border:1px solid var(--line);background:#fff;color:var(--text);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.modal-close:hover{color:var(--orange);border-color:var(--orange)}
.modal-close svg{width:18px;height:18px}
.modal-card h2{font-size:24px;margin-bottom:8px}
.modal-card .modal-sub{font-size:14px;color:var(--text-2);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:6px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 14px;height:46px;background:#fff;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);background:rgba(217,74,61,.08);
}
.field .err{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.has-error .err{display:block}
.consent{display:flex;align-items:flex-start;gap:10px;margin:16px 0 6px}
.consent input{margin-top:4px;width:16px;height:16px;accent-color:var(--orange);flex:0 0 auto}
.consent label{font-size:12px;line-height:1.6;color:var(--text-2)}
.form-note{font-size:12px;color:var(--text-3);margin-top:8px;line-height:1.6}
.modal-success{display:none;text-align:center;padding:36px 8px}
.modal-success.is-visible{display:block}
.modal-success .ok{
  width:60px;height:60px;border-radius:50%;background:rgba(47,184,168,.14);color:var(--teal);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.modal-success .ok svg{width:30px;height:30px}
.modal-success h3{font-size:20px;margin-bottom:8px}
.modal-success p{font-size:14px;color:var(--text-2)}

/* mobile tabbar */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(248,245,240,.99);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:flex;align-items:stretch;justify-content:space-around;height:60px}
.tab-item{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--text-3);text-decoration:none;position:relative;
}
.tab-item svg{width:22px;height:22px}
.tab-item.is-active{color:var(--orange)}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:24px;height:2px;background:var(--orange);border-radius:0 0 2px 2px;
}

/* responsive */
@media (max-width:1279px){
  .container{padding:0 28px}
  h1{font-size:44px}
}
@media (max-width:1023px){
  :root{--space:72px}
  .nav-desktop{display:none}
  .hamburger{display:flex}
  h1{font-size:38px}
  h2{font-size:28px}
  h3{font-size:20px}
  .zigzag-item{grid-template-columns:1fr;gap:24px}
  .zigzag-item.is-reverse .zigzag-media{order:0}
  .zigzag-item.is-reverse .zigzag-body{order:0}
  .zigzag-media .num{left:12px;top:12px;width:44px;height:44px;font-size:14px;border-radius:12px}
  .stats{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .stat{padding:8px 20px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px}
  .tabbar{display:block}
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .site-footer{padding-bottom:44px}
}
@media (max-width:767px){
  :root{--space:56px}
  body{font-size:16px}
  .container{padding:0 20px}
  h1{font-size:32px}
  h2{font-size:25px}
  .page-hero{padding:24px 0 40px}
  .page-hero .lead{font-size:16px}
  .type-grid{grid-template-columns:1fr}
  .hero-meta{gap:8px}
  .chip{font-size:12px;padding:7px 12px}
  .wide-figure .frame{aspect-ratio:16/10;border-radius:var(--radius-sm)}
  .wide-figure .glow{padding:20px;position:static;background:var(--ink);border-radius:0 0 var(--radius-sm) var(--radius-sm)}
  .btn{width:100%}
  .btn-sm{width:auto}
  .section-head{margin-bottom:32px}
  .faq-item summary{padding:18px 20px;font-size:15px}
  .faq-item .answer{padding:0 20px 20px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{max-width:100%;border-radius:20px 20px 0 0;padding:26px 20px 32px;max-height:88vh;transform:translateY(100%)}
  .modal-mask.is-open .modal-card{transform:translateY(0)}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .stats{grid-template-columns:1fr;gap:0}
  .stat{border-left:0;padding:16px 0;border-top:1px solid var(--line-dark)}
  .stat:first-child{border-top:0;padding-top:0}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:22px}
  .modal-card{padding:22px 16px 28px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --ink:#14101F;
  --ink-2:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line:#E3DCD2;
  --line-dark:rgba(255,255,255,.12);
  --orange:#FF6A2B;
  --orange-dark:#E4521A;
  --orange-press:#C94310;
  --orange-soft:rgba(255,106,43,.12);
  --gold:#F5C453;
  --teal:#2FB8A8;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --white:#F8F5F0;
  --white-soft:rgba(248,245,240,.66);
  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:10px;
  --shadow-card:0 1px 2px rgba(20,16,31,.05),0 10px 28px rgba(20,16,31,.07);
  --shadow-hover:0 2px 4px rgba(20,16,31,.07),0 18px 40px rgba(20,16,31,.12);
  --shadow-header:0 6px 20px rgba(20,16,31,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --space-sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  letter-spacing:0;
  padding-bottom:0;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open,body.modal-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;border-bottom:1px solid rgba(27,23,37,.28);transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--orange);border-color:var(--orange)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--text)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:52px;line-height:1.18;font-weight:800}
h2{font-size:34px;line-height:1.28;font-weight:700}
h3{font-size:22px;line-height:1.4;font-weight:600}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,245,240,.98);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-header)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;border:0;flex-shrink:0}
.brand:hover{color:inherit;border:0}
.brand-mark{width:30px;height:30px;color:var(--orange);flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:800;color:var(--ink)}
.brand-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em}
.nav-desktop{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{
  position:relative;border:0;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 0;white-space:nowrap;transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink);border:0}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.hamburger{display:none;width:42px;height:42px;border-radius:var(--radius-sm);border:1px solid var(--line);align-items:center;justify-content:center;color:var(--text)}
.hamburger svg{width:22px;height:22px}
.hamburger:hover{background:rgba(20,16,31,.06)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:600;border:1.5px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  cursor:pointer;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--orange);color:#fff;border-color:var(--orange)}
.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-1px);color:#fff}
.btn-primary:active{background:var(--orange-press);border-color:var(--orange-press);transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(27,23,37,.35)}
.btn-ghost:hover{background:rgba(20,16,31,.06);border-color:var(--text);color:var(--text);transform:translateY(-1px)}
.btn-ghost:active{background:rgba(20,16,31,.1);transform:translateY(0)}
.btn-light{background:transparent;color:var(--white);border-color:rgba(248,245,240,.5)}
.btn-light:hover{background:rgba(248,245,240,.1);border-color:var(--white);color:#fff;transform:translateY(-1px)}
.btn-block{width:100%}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;border:0;
  color:var(--orange);font-weight:600;font-size:15px;border-bottom:1px solid var(--orange);
  padding-bottom:1px;transition:gap .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow svg{width:16px;height:16px;transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--orange-dark);border-color:var(--orange-dark);gap:10px}
.link-arrow:hover svg{transform:translateX(3px)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--text-3)}
.breadcrumb a{border:0;color:var(--text-2)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb [aria-current]{color:var(--text);font-weight:600}

/* ---------- hero ---------- */
.page-hero{
  position:relative;margin-top:20px;border-radius:20px;overflow:hidden;
  background:var(--ink);color:var(--white);
  isolation:isolate;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.42;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(circle at 84% 18%,rgba(245,196,83,.16),transparent 42%),
    linear-gradient(102deg,rgba(20,16,31,.97) 0%,rgba(20,16,31,.9) 46%,rgba(36,29,54,.76) 100%);
}
.hero-inner{padding:72px 56px 64px;max-width:860px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line-dark);
  font-size:12px;color:var(--white-soft);letter-spacing:.02em;margin-bottom:22px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--teal)}
.page-hero h1{color:var(--white);font-size:46px}
.page-hero h1 .accent{color:var(--gold)}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.75;color:rgba(248,245,240,.82);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:34px}
.hero-metrics .metric{padding:0 22px;border-left:1px solid var(--line-dark);line-height:1.5}
.hero-metrics .metric:first-child{padding-left:0;border-left:0}
.metric-num{display:block;font-size:22px;font-weight:800;color:var(--gold);font-variant-numeric:tabular-nums}
.metric-label{font-size:12px;color:var(--white-soft)}
.hero-note{margin-top:22px;font-size:12px;color:rgba(248,245,240,.56)}

/* ---------- section basics ---------- */
.section{padding:var(--space-sec) 0}
.section-soft{background:var(--paper-2)}
.section-dark{background:var(--ink);color:var(--white);position:relative;overflow:hidden}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(248,245,240,.55) .6px,transparent .7px);
  background-size:26px 26px;opacity:.06;
}
.section-dark > .container{position:relative;z-index:1}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px}
.section-head .head-text{max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;color:var(--orange);letter-spacing:.04em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:3px;height:14px;background:var(--orange);border-radius:2px}
.section-head h2{position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.14em;bottom:.14em;width:3px;background:var(--orange);border-radius:2px}
.section-head p.desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:640px}
.section-dark .section-head p.desc{color:var(--white-soft)}
.section-dark .section-head h2{color:var(--white)}

/* ---------- tabs ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.tab{
  height:38px;padding:0 18px;border-radius:999px;border:1px solid var(--line);
  background:#fff;font-size:14px;font-weight:500;color:var(--text-2);
  transition:all .2s var(--ease);
}
.tab:hover{border-color:var(--orange);color:var(--orange)}
.tab.is-active{background:var(--orange);border-color:var(--orange);color:#fff;font-weight:600}

/* ---------- cards grid ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--paper-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .tag-float{
  position:absolute;top:14px;left:14px;height:26px;display:inline-flex;align-items:center;
  padding:0 12px;border-radius:999px;background:rgba(20,16,31,.78);color:#fff;
  font-size:12px;font-weight:600;backdrop-filter:blur(2px);
}
.card-body{display:flex;flex-direction:column;flex:1;padding:22px 24px 20px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:var(--orange-soft);color:var(--orange-dark);font-size:12px;font-weight:600;
  margin-bottom:12px;align-self:flex-start;
}
.badge-teal{background:rgba(47,184,168,.12);color:#177E73}
.card h3{font-size:18px;font-weight:600;line-height:1.5}
.card p.summary{margin-top:10px;font-size:15px;line-height:1.75;color:var(--text-2)}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line);margin-top:20px;
}
.meta{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-3)}
.meta svg{width:14px;height:14px}
.card.is-hidden{display:none}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.flow-step{padding:34px 30px 0 0;border-right:1px solid var(--line)}
.flow-step:last-child{border-right:0;padding-right:0}
.flow-step:nth-child(2){padding-left:30px}
.flow-step:nth-child(3){padding-left:30px}
.flow-num{font-size:28px;font-weight:800;color:var(--gold);font-variant-numeric:tabular-nums;line-height:1}
.flow-step h3{margin-top:14px;font-size:19px}
.flow-step p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.8}
.flow-step .link-arrow{margin-top:18px}

/* ---------- scenes ---------- */
.scenes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 48px}
.scene{position:relative;padding-left:20px}
.scene::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--orange);border-radius:2px}
.scene .idx{display:block;font-size:12px;font-weight:700;color:var(--gold);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.scene h3{margin-top:6px;font-size:18px}
.scene p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:12px}
.stat{padding:8px 26px;border-left:1px solid var(--line-dark)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{display:flex;align-items:baseline;gap:4px;font-size:40px;font-weight:800;color:var(--gold);line-height:1.1;font-variant-numeric:tabular-nums}
.stat-num small{font-size:15px;font-weight:600;color:var(--white-soft)}
.stat p{margin-top:10px;font-size:13px;color:var(--white-soft);line-height:1.7}

/* ---------- faq ---------- */
.faq{background:var(--paper-2);border-radius:var(--radius-lg);padding:8px 28px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;
  min-height:60px;padding:14px 0;text-align:left;font-size:16px;font-weight:600;color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--orange)}
.faq-q .icon{position:relative;width:20px;height:20px;flex-shrink:0;transition:transform .22s var(--ease)}
.faq-q .icon::before,.faq-q .icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:1px;
}
.faq-q .icon::before{left:0;right:0;top:9px;height:2px}
.faq-q .icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-q{color:var(--orange)}
.faq-item.is-open .icon{transform:rotate(45deg)}
.faq-item.is-open .icon::before,.faq-item.is-open .icon::after{background:var(--orange)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:760px}

/* ---------- related pills ---------- */
.related{display:flex;flex-wrap:wrap;gap:12px}
.pill-link{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;color:var(--text-2);
  transition:all .2s var(--ease);
}
.pill-link:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-1px)}
.pill-link.is-current{background:var(--orange);border-color:var(--orange);color:#fff;font-weight:600;cursor:default;transform:none}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);color:var(--white);border-radius:20px;
  padding:56px;display:flex;align-items:center;justify-content:space-between;gap:40px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(245,196,83,.5) .7px,transparent .8px);
  background-size:30px 30px;opacity:.12;
}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:var(--white);font-size:30px;padding:0}
.cta-band h2::before{display:none}
.cta-band p{margin-top:12px;font-size:15px;color:var(--white-soft);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex-shrink:0}

/* ---------- privacy ---------- */
.privacy-bar{background:var(--paper-2);padding:26px 0}
.privacy-inner{display:flex;gap:14px;align-items:flex-start;max-width:900px}
.privacy-inner .shield{width:22px;height:22px;color:var(--teal);flex-shrink:0;margin-top:2px}
.privacy-inner p{font-size:13px;line-height:1.7;color:var(--text-2)}
.privacy-inner p + p{margin-top:4px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--white);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{color:var(--gold)}
.footer-brand .brand-name{color:var(--white)}
.footer-brand .brand-sub{color:rgba(248,245,240,.55)}
.footer-about{margin-top:18px;font-size:14px;line-height:1.8;color:var(--white-soft);max-width:340px}
.footer-contact{margin-top:14px;font-size:13px;line-height:1.8;color:rgba(248,245,240,.5)}
.footer-title{font-size:15px;font-weight:600;color:var(--white);margin-bottom:16px}
.footer-links li + li{margin-top:10px}
.footer-links a{font-size:14px;color:var(--white-soft);border:0}
.footer-links a:hover{color:var(--orange)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(248,245,240,.5);
}

/* ---------- mobile drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.55);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;background:var(--paper);
  z-index:91;padding:24px;transform:translateX(100%);
  transition:transform .25s var(--ease);display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{width:38px;height:38px;border-radius:var(--radius-sm);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.drawer-close svg{width:18px;height:18px}
.drawer .nav-link{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--text)}
.drawer .nav-link::after{display:none}
.drawer .nav-link.is-active{color:var(--orange)}
.drawer .btn{margin-top:18px}

/* ---------- bottom tab bar ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(248,245,240,.98);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -4px 18px rgba(20,16,31,.06);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(5,1fr)}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;font-size:11px;color:var(--text-3);border:0;border-top:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tabbar a svg{width:22px;height:22px}
.tabbar a:hover{color:var(--text-2);border:0;border-top:2px solid transparent}
.tabbar a.is-active{color:var(--orange);border-top-color:var(--orange);font-weight:600}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  padding:24px;background:rgba(20,16,31,.55);
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.modal.is-open{opacity:1;visibility:visible}
.modal-card{
  width:100%;max-width:560px;max-height:88vh;overflow-y:auto;background:var(--paper);
  border-radius:20px;padding:32px;position:relative;
  transform:translateY(12px);transition:transform .22s var(--ease);
}
.modal.is-open .modal-card{transform:translateY(0)}
.modal-card h3{font-size:22px}
.modal-card .modal-sub{margin-top:8px;font-size:14px;color:var(--text-2)}
.modal-close{
  position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.modal-close:hover{background:rgba(20,16,31,.07);color:var(--text)}
.modal-close svg{width:18px;height:18px}
.form{margin-top:22px;display:grid;gap:16px}
.field{display:grid;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--text-2)}
.field input,.field select,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:#fff;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#D94A3D;background:rgba(217,74,61,.06)}
.field .err{font-size:13px;color:#D94A3D;display:none}
.field.has-error .err{display:block}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:12px;line-height:1.6;color:var(--text-2)}
.consent input{width:16px;height:16px;margin-top:2px;flex-shrink:0;accent-color:var(--orange)}
.form-ok{display:none;text-align:center;padding:36px 0 12px}
.form-ok svg{width:52px;height:52px;color:var(--teal);margin:0 auto 14px}
.form-ok h4{font-size:19px;font-weight:700}
.form-ok p{margin-top:8px;font-size:14px;color:var(--text-2)}
.form.is-done{display:none}
.form-ok.is-on{display:block}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .hero-inner{padding:64px 40px 56px}
  .page-hero h1{font-size:40px}
}
@media (max-width:1023px){
  :root{--space-sec:72px}
  .nav-desktop{display:none}
  .hamburger{display:flex}
  .header-inner{gap:16px;min-height:66px}
  h1{font-size:34px}
  h2{font-size:27px}
  .page-hero h1{font-size:34px}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .flow{grid-template-columns:1fr;border-top:0}
  .flow-step{border-right:0;border-top:1px solid var(--line);padding:26px 0 0}
  .flow-step:nth-child(2),.flow-step:nth-child(3){padding-left:0}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .container{padding:0 16px}
  .tabbar{display:block}
  .header-actions .btn-sm{display:none}
  .section{padding:56px 0}
  .page-hero{margin-top:14px;border-radius:16px}
  .hero-inner{padding:42px 22px 38px}
  .page-hero h1{font-size:29px;line-height:1.25}
  .hero-sub{font-size:16px;margin-top:14px}
  .hero-actions{gap:10px;margin-top:24px}
  .hero-actions .btn{width:100%;height:46px}
  .hero-metrics{margin-top:26px}
  .hero-metrics .metric{padding:0 14px}
  .metric-num{font-size:18px}
  .grid-cards{grid-template-columns:1fr}
  .scenes{grid-template-columns:1fr;gap:22px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:28px}
  .faq{padding:6px 18px}
  .faq-q{font-size:15px;min-height:56px}
  .cta-band{padding:32px 22px;border-radius:16px}
  .cta-band h2{font-size:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .modal{padding:0;align-items:flex-end}
  .modal-card{max-width:none;border-radius:20px 20px 0 0;padding:26px 20px 30px;max-height:88vh}
  .tabs{gap:8px}
  .tab{height:34px;padding:0 14px;font-size:13px}
  .card-media{aspect-ratio:4/3}
}
@media (max-width:479px){
  .page-hero h1{font-size:26px}
  .hero-metrics .metric{padding:0 10px}
  .hero-metrics .metric:first-child{padding-left:0}
  .stat-num{font-size:32px}
  .stats{grid-template-columns:1fr 1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category4 */
:root{
  --ink:#14101F;
  --ink-2:#241D36;
  --paper:#F8F5F0;
  --paper-2:#EFEAE2;
  --line-light:#E3DCD2;
  --line-dark:rgba(255,255,255,.12);
  --orange:#FF6A2B;
  --orange-hover:#E4521A;
  --orange-active:#C94310;
  --orange-soft:rgba(255,106,43,.12);
  --gold:#F5C453;
  --teal:#2FB8A8;
  --text:#1B1725;
  --text-2:#5A5468;
  --text-3:#8A8496;
  --text-inv:#F8F5F0;
  --text-inv-2:rgba(248,245,240,.66);
  --danger:#D94A3D;
  --r-card:16px;
  --r-inner:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-modal:20px;
  --sh-card:0 1px 2px rgba(20,16,31,.05),0 10px 28px rgba(20,16,31,.07);
  --sh-card-hover:0 2px 4px rgba(20,16,31,.07),0 18px 40px rgba(20,16,31,.12);
  --sh-header:0 6px 20px rgba(20,16,31,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --space:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;transition:color .2s var(--ease);}
a:hover{color:var(--orange);}
button{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:16px;font-weight:600;line-height:1;
  text-decoration:none;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.24);}
.btn-primary:hover{background:var(--orange-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{background:var(--orange-active);transform:translateY(0);}
.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none;}
.btn-ghost{background:transparent;border-color:var(--text);color:var(--text);text-decoration:none;}
.btn-ghost:hover{background:rgba(27,23,37,.06);color:var(--text);}
.btn-ghost-dark{background:transparent;border-color:rgba(248,245,240,.5);color:var(--text-inv);text-decoration:none;}
.btn-ghost-dark:hover{background:rgba(248,245,240,.1);color:#fff;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--orange);font-size:15px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;
  background:none;border:0;padding:0;cursor:pointer;
}
.text-link:hover{color:var(--orange-hover);text-decoration-thickness:2px;}
.text-link svg{width:16px;height:16px;transition:transform .2s var(--ease);}
.text-link:hover svg{transform:translateX(4px);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(248,245,240,.98);
  border-bottom:1px solid var(--line-light);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-header);}
.header-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--text);flex:0 0 auto;
}
.brand:hover{color:var(--text);}
.brand-mark{width:30px;height:30px;color:var(--orange);flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:0;}
.brand-sub{font-size:11px;color:var(--text-3);font-weight:500;margin-top:2px;}
.nav-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:15px;font-weight:500;
  color:var(--text-2);text-decoration:none;
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(27,23,37,.05);}
.nav-link.is-active{color:var(--text);font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--orange);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line-light);background:transparent;cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.hamburger svg{width:22px;height:22px;}
.hamburger:hover{background:var(--paper-2);border-color:var(--text-3);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.55);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:100%;
  background:var(--paper);z-index:90;
  transform:translateX(100%);transition:transform .25s var(--ease);
  padding:24px;overflow-y:auto;
  display:flex;flex-direction:column;gap:8px;
  box-shadow:-20px 0 40px rgba(20,16,31,.18);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-light);
  background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-close svg{width:20px;height:20px;}
.drawer-link{
  display:block;padding:14px 12px;border-radius:10px;
  font-size:16px;font-weight:500;color:var(--text);text-decoration:none;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover{background:var(--paper-2);color:var(--orange);}
.drawer-link.is-active{color:var(--orange);font-weight:700;background:var(--orange-soft);}
.drawer .btn{margin-top:16px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap{background:var(--paper);padding:20px 0 0;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .current{color:var(--text-3);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 页面 Hero ---------- */
.page-hero{background:var(--paper);padding:40px 0 56px;}
.hero-inner{max-width:880px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--orange-soft);color:var(--orange);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-teal{background:rgba(47,184,168,.14);color:#1E8C80;}
.badge-dark{background:rgba(255,255,255,.06);border:1px solid var(--line-dark);color:var(--text-inv-2);}
.page-hero h1{
  font-size:52px;line-height:1.18;font-weight:800;letter-spacing:0;
  margin:18px 0 0;
}
.page-hero .hero-sub{
  font-size:18px;line-height:1.75;color:var(--text-2);
  margin-top:18px;max-width:720px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;
  margin-top:24px;font-size:13px;color:var(--text-3);
}
.hero-meta span{padding:0 14px;border-left:1px solid var(--line-light);}
.hero-meta span:first-child{padding-left:0;border-left:0;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space) 0;}
.section-paper-2{background:var(--paper-2);}
.section-dark{
  background:var(--ink);color:var(--text-inv);
  position:relative;overflow:hidden;
}
.section-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(248,245,240,.6) 1px,transparent 1px);
  background-size:34px 34px;opacity:.05;
}
.section-dark > .container{position:relative;z-index:1;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section-head h2{
  font-size:34px;line-height:1.28;font-weight:700;
  padding-left:16px;position:relative;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;
  background:var(--orange);border-radius:2px;
}
.section-head .head-note{font-size:15px;color:var(--text-2);max-width:520px;line-height:1.75;}
.section-dark .section-head h2{color:var(--text-inv);}
.section-dark .head-note{color:var(--text-inv-2);}

/* ---------- 问答双栏 ---------- */
.qa-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:40px;
  align-items:start;
}
.q-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 32px;
}
.q-item{
  display:block;padding:20px 0 20px 18px;position:relative;
  border-top:1px solid var(--line-light);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.q-item::before{
  content:"";position:absolute;left:0;top:24px;width:2px;height:18px;
  background:var(--line-light);border-radius:2px;
  transition:background-color .2s var(--ease),height .2s var(--ease);
}
.q-item:hover::before{background:var(--orange);height:24px;}
.q-item .q-title{
  display:block;font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s var(--ease);
}
.q-item:hover .q-title{color:var(--orange);}
.q-item .q-desc{
  display:block;font-size:14px;line-height:1.7;color:var(--text-2);margin-top:6px;
}

/* 要点卡 */
.side-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:28px 26px;
  position:sticky;top:96px;
}
.side-card h3{font-size:19px;font-weight:700;line-height:1.4;margin-bottom:6px;}
.side-card .side-note{font-size:13px;color:var(--text-3);margin-bottom:20px;line-height:1.6;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;line-height:1.7;color:var(--text);
  padding:12px 0;border-bottom:1px dashed var(--line-light);
}
.check-list li:last-child{border-bottom:0;padding-bottom:4px;}
.check-list li svg{
  width:18px;height:18px;flex:0 0 auto;color:var(--teal);margin-top:4px;
}
.side-card .btn{margin-top:22px;}
.side-foot{font-size:12px;color:var(--text-3);line-height:1.6;margin-top:14px;text-align:center;}

/* ---------- 图文区块 ---------- */
.figure-split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;
}
.figure-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-card);
  aspect-ratio:4/3;
  background:var(--paper-2);
}
.figure-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.figure-media:hover img{transform:scale(1.03);}
.figure-media .media-tag{
  position:absolute;left:16px;top:16px;
}
.figure-body h3{font-size:22px;line-height:1.4;font-weight:700;}
.figure-body p{font-size:16px;line-height:1.85;color:var(--text-2);margin-top:14px;max-width:560px;}
.mini-list{margin-top:22px;display:grid;gap:12px;}
.mini-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;line-height:1.7;color:var(--text);
}
.mini-list .dot{
  width:6px;height:6px;border-radius:2px;background:var(--orange);
  flex:0 0 auto;margin-top:9px;
}

/* ---------- 流程时间线 ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  counter-reset:step;
}
.step{
  padding:24px 22px;border-radius:var(--r-card);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.03);
  transition:background-color .25s var(--ease),transform .25s var(--ease);
}
.step:hover{background:rgba(255,255,255,.07);transform:translateY(-2px);}
.step .num{
  font-size:28px;font-weight:800;color:var(--gold);line-height:1;
  letter-spacing:0;
}
.step h3{font-size:18px;font-weight:600;color:var(--text-inv);margin:14px 0 8px;line-height:1.4;}
.step p{font-size:14px;line-height:1.75;color:var(--text-inv-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-list{background:#fff;border:1px solid var(--line-light);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);}
.faq-item + .faq-item{border-top:1px solid var(--line-light);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 24px;
  background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-q:hover{color:var(--orange);background:rgba(255,106,43,.04);}
.faq-icon{
  width:20px;height:20px;flex:0 0 auto;color:var(--text-3);
  transition:transform .25s var(--ease),color .25s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--orange);}
.faq-item.is-open .faq-q{color:var(--orange);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ---------- 相关分类 ---------- */
.related-cats{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.cat-pill{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid var(--line-light);background:#fff;
  font-size:15px;font-weight:500;color:var(--text);
  text-decoration:none;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.cat-pill:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-1px);box-shadow:var(--sh-card);}
.cat-pill.is-current{
  background:var(--orange);border-color:var(--orange);color:#fff;
  pointer-events:none;font-weight:600;
}
.cat-pill svg{width:16px;height:16px;}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);color:var(--text-inv);position:relative;overflow:hidden;padding:72px 0;}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(248,245,240,.65) 1px,transparent 1px);
  background-size:30px 30px;opacity:.05;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{font-size:34px;line-height:1.28;font-weight:700;}
.cta-inner p{font-size:16px;line-height:1.8;color:var(--text-inv-2);margin-top:12px;max-width:560px;}

/* ---------- 隐私说明 ---------- */
.privacy-strip{background:var(--paper-2);padding:28px 0;}
.privacy-inner{
  display:flex;gap:12px;align-items:flex-start;
  max-width:900px;font-size:13px;line-height:1.7;color:var(--text-2);
}
.privacy-inner svg{width:18px;height:18px;flex:0 0 auto;color:var(--teal);margin-top:3px;}

/* ---------- 底部 Tab ---------- */
.bottom-tabs{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(248,245,240,.99);
  border-top:1px solid var(--line-light);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px rgba(20,16,31,.08);
}
.bottom-tabs .tab{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:60px;text-decoration:none;color:var(--text-3);
  font-size:11px;font-weight:500;position:relative;
  transition:color .2s var(--ease);
}
.bottom-tabs .tab svg{width:22px;height:22px;}
.bottom-tabs .tab.is-active{color:var(--orange);}
.bottom-tabs .tab.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--orange);border-radius:2px;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--text-inv);padding:72px 0 32px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--text-inv);}
.footer-brand .brand-mark{color:var(--orange);}
.footer-brand .brand-name{color:var(--text-inv);}
.footer-brand .brand-sub{color:var(--text-inv-2);}
.footer-about{font-size:14px;line-height:1.8;color:var(--text-inv-2);margin-top:18px;max-width:360px;}
.footer-contact{font-size:13px;line-height:1.8;color:var(--text-inv-2);margin-top:14px;}
.footer-title{font-size:15px;font-weight:700;color:var(--text-inv);margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--text-inv-2);text-decoration:none;transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--orange);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-inv-2);
}

/* ---------- 弹层 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:100;
  background:rgba(20,16,31,.6);
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.modal-mask.is-open{opacity:1;visibility:visible;}
.modal{
  width:100%;max-width:560px;background:var(--paper);
  border-radius:var(--r-modal);padding:32px;position:relative;
  max-height:88vh;overflow-y:auto;
  transform:translateY(12px);transition:transform .25s var(--ease);
  box-shadow:0 30px 70px rgba(20,16,31,.35);
}
.modal-mask.is-open .modal{transform:translateY(0);}
.modal-close{
  position:absolute;top:16px;right:16px;width:32px;height:32px;
  border-radius:8px;border:1px solid var(--line-light);background:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.modal-close svg{width:18px;height:18px;color:var(--text-2);}
.modal h3{font-size:22px;font-weight:700;line-height:1.4;}
.modal .modal-sub{font-size:14px;line-height:1.7;color:var(--text-2);margin-top:8px;}
.form-grid{display:grid;gap:16px;margin-top:22px;}
.field label{display:block;font-size:13px;font-weight:500;color:var(--text-3);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;font:inherit;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--line-light);border-radius:10px;
  padding:0 14px;height:46px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.12);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);background:rgba(217,74,61,.08);
}
.field .err{display:none;font-size:13px;color:var(--danger);margin-top:6px;line-height:1.6;}
.field.has-error .err{display:block;}
.consent{
  display:flex;gap:8px;align-items:flex-start;
  font-size:12px;line-height:1.6;color:var(--text-2);margin-top:4px;
}
.consent input{width:16px;height:16px;margin-top:3px;flex:0 0 auto;accent-color:var(--orange);}
.form-success{
  display:none;text-align:center;padding:32px 0 12px;
}
.form-success svg{width:48px;height:48px;color:var(--teal);margin:0 auto 16px;}
.form-success h4{font-size:19px;font-weight:700;}
.form-success p{font-size:15px;color:var(--text-2);margin-top:8px;line-height:1.75;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:44px;}
  .section-head h2{font-size:30px;}
  .qa-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px;}
}
@media (max-width:1023px){
  :root{--space:72px;}
  .container{padding:0 24px;}
  .nav-desktop{display:none;}
  .hamburger{display:flex;}
  .header-actions .btn-sm{display:none;}
  .page-hero{padding:32px 0 40px;}
  .page-hero h1{font-size:36px;}
  .page-hero .hero-sub{font-size:16px;}
  .qa-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .side-card{position:static;order:-1;}
  .figure-split{grid-template-columns:minmax(0,1fr);gap:28px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .cta-inner h2{font-size:28px;}
}
@media (max-width:767px){
  :root{--space:56px;}
  body{font-size:16px;padding-bottom:60px;}
  .container{padding:0 16px;}
  .header-inner{min-height:64px;gap:12px;}
  .brand-name{font-size:16px;}
  .brand-mark{width:26px;height:26px;}
  .page-hero h1{font-size:30px;line-height:1.24;}
  .section-head h2{font-size:26px;}
  .section-head{margin-bottom:28px;}
  .q-list{grid-template-columns:minmax(0,1fr);gap:0;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .faq-q{font-size:15px;padding:14px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
  .side-card{padding:22px 20px;}
  .cta-band{padding:48px 0;}
  .cta-inner h2{font-size:24px;}
  .cta-inner .btn{width:100%;}
  .site-footer{padding:56px 0 24px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:32px;}
  .bottom-tabs{display:flex;}
  .modal-mask{align-items:flex-end;padding:0;}
  .modal{
    max-width:100%;border-radius:20px 20px 0 0;padding:26px 20px 32px;
    max-height:88vh;transform:translateY(100%);
  }
  .modal-mask.is-open .modal{transform:translateY(0);}
  .breadcrumb .current{max-width:180px;}
}
@media (max-width:479px){
  .page-hero h1{font-size:27px;}
  .hero-meta{font-size:12px;}
  .hero-meta span{padding:0 10px;}
  .btn{min-height:46px;font-size:15px;}
  .cat-pill{min-height:42px;padding:0 16px;font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}