/* roulang page: index */
:root{
  --red:#A6172B;
  --red-dark:#7E0F20;
  --red-light:#C9464F;
  --ink:#17161A;
  --olive:#2E5E4E;
  --amber:#D98E2B;
  --bg:#F6F1EA;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#2A272D;
  --muted:#6B6469;
  --radius-card:14px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --sp-section:96px;
  --container:1200px;
  --font:PingFang SC, Hiragino Sans GB, Microsoft YaHei, Noto Sans SC, system-ui, -apple-system, "Segoe UI", sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,button{font-family:inherit}
:focus-visible{outline:2px solid var(--olive);outline-offset:2px;border-radius:4px}
::selection{background:rgba(166,23,43,.16)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1240px}}
.section{padding:var(--sp-section) 0}
.section-tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--red);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red);display:block}
h1{font-size:clamp(30px,4vw,50px);font-weight:800;letter-spacing:-.01em;line-height:1.2}
h2{font-size:clamp(24px,2.4vw,31px);font-weight:700;line-height:1.32;letter-spacing:-.005em}
h3{font-size:20px;font-weight:650;line-height:1.45;margin:0 0 8px}
.lead{font-size:17px;color:var(--muted);max-width:720px;margin-top:14px}
.muted{color:var(--muted)}
.small{font-size:13.5px;color:var(--muted)}
.num{font-variant-numeric:tabular-nums}

/* 顶部提示条 */
.topbar{
  background:var(--ink);color:#F3EDE5;font-size:13.5px;
  min-height:36px;display:flex;align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:center;gap:14px;position:relative;padding-right:52px}
.topbar strong{color:#fff;font-weight:650}
.topbar-close{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:6px;line-height:1;color:#CFC7BD;
  display:flex;align-items:center;justify-content:center;transition:background .2s,color .2s;
}
.topbar-close:hover{background:rgba(255,255,255,.12);color:#fff}
.topbar.is-hidden{display:none}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(246,241,234,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;transition:box-shadow .25s,border-color .25s;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:74px}
.nav-group{display:flex;align-items:center;gap:4px;flex:1}
.nav-group.nav-right{justify-content:flex-end}
.nav-link{
  position:relative;padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:600;color:#3A343A;white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-link:hover{color:var(--red)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--red)}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  font-weight:800;font-size:19px;letter-spacing:-.01em;color:var(--ink);
  padding:6px 10px;border-radius:10px;
}
.brand-mark{
  width:34px;height:34px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--red) 0%,var(--red-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;letter-spacing:.02em;
  box-shadow:var(--shadow-1);
}
.brand-text{white-space:nowrap}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;gap:4px;flex-direction:column;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  display:none;position:fixed;inset:74px 0 0 0;background:var(--bg);z-index:55;
  padding:20px 24px 40px;overflow-y:auto;
}
.drawer.is-open{display:block}
.drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 4px;border-bottom:1px solid var(--line);font-weight:600;
}
.drawer a span:last-child{color:var(--muted);font-weight:400;font-size:13px}
.drawer .btn{margin-top:22px;width:100%}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:650;line-height:1;cursor:pointer;
  border:1.5px solid transparent;transition:transform .18s,box-shadow .18s,background .18s,color .18s,border-color .18s;
  text-align:center;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-primary{background:var(--red);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--red-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{color:var(--red);background:transparent}
.btn-ghost:hover{background:rgba(166,23,43,.08)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#F3EDE5;transform:translateY(-1px)}
.btn-line-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-line-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:var(--radius-badge);
  font-size:13.5px;font-weight:650;line-height:1.3;
  border:1px solid var(--red);color:var(--red);background:#fff;
  font-variant-numeric:tabular-nums;
}
.badge-soft{background:#F1E9E0;border-color:var(--line);color:#4C444B}
.badge-amber{background:#FDF4E6;border-color:#EBCB97;color:#9A6415}
.badge-olive{background:#EDF3F0;border-color:#BCD2C9;color:var(--olive)}
.badge-ink{background:var(--ink);border-color:var(--ink);color:#fff}

/* 卡片 */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:transform .22s box-shadow .22s,box-shadow .22s;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.card-pad{padding:26px}
.card-media{aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-card) var(--radius-card) 0 0;background:#EDE6DC}
.card-media img{width:100%;height:100%;object-fit:cover}

/* HERO */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#F7F3EE;padding:78px 0 86px}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(23,22,26,.86) 0%,rgba(23,22,26,.78) 45%,rgba(23,22,26,.92) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-stripe{
  position:absolute;inset:0;opacity:.09;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,#fff 0 8px,transparent 8px 16px);
}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy{max-width:660px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.hero h1{color:#fff;margin-bottom:16px}
.hero h1 .hl{color:#F2A0A9}
.hero-sub{font-size:17px;line-height:1.8;color:#D8D1CA;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-actions .btn-ghost{color:#F0C3C8}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.hero-meta{margin-top:18px;font-size:12.5px;letter-spacing:.02em;color:#B8B0A9;font-variant-numeric:tabular-nums}
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-visual::before{
  content:"";position:absolute;inset:auto -10px -18px 34px;top:26px;
  background:rgba(166,23,43,.35);border-radius:18px;z-index:0;
}
.device-frame{
  position:relative;z-index:1;width:100%;max-width:340px;
  background:#222127;border:1px solid rgba(255,255,255,.14);border-radius:22px;
  padding:12px;box-shadow:0 26px 60px -28px rgba(0,0,0,.85);
}
.device-frame img{border-radius:14px;aspect-ratio:3/4;object-fit:cover;width:100%}
.hero-strip{position:relative;margin-top:34px;display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px}
.hero-strip img{
  scroll-snap-align:start;width:190px;aspect-ratio:16/10;object-fit:cover;
  border-radius:10px;border:1px solid rgba(255,255,255,.16);flex:0 0 auto;
}

/* 价值要点 */
.value-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.value-item{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-1);display:flex;gap:20px;
  transition:transform .22s,box-shadow .22s;
}
.value-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.value-item:nth-child(even){transform:translateY(18px)}
.value-item:nth-child(even):hover{transform:translateY(16px)}
.value-no{
  font-size:26px;font-weight:800;color:var(--red);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;line-height:1;padding-top:2px;flex:0 0 auto;
}
.value-item p{font-size:15px;color:var(--muted);line-height:1.8}

/* 轮播 */
.slider-wrap{position:relative}
.slider-track{
  display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 22px;scrollbar-width:none;
}
.slider-track::-webkit-scrollbar{display:none}
.slide{
  flex:0 0 calc((100% - 36px)/3);scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .22s,box-shadow .22s;
}
.slide:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.slide img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EDE6DC}
.slide-body{padding:20px 22px 24px}
.slide-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.slider-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px}
.slider-dots{display:flex;gap:8px}
.slider-dots button{width:26px;height:4px;border-radius:2px;background:var(--line);transition:background .2s,width .2s}
.slider-dots button.is-active{background:var(--red);width:40px}
.slider-ctrl{display:flex;gap:8px}
.slider-ctrl button{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink);
  transition:background .2s,color .2s,border-color .2s;
}
.slider-ctrl button:hover{background:var(--ink);color:#fff;border-color:var(--ink)}

/* 系统要求 */
.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.req-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 22px;box-shadow:var(--shadow-1);transition:transform .22s,box-shadow .22s}
.req-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.req-head{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.req-plat{width:32px;height:32px;border-radius:8px;background:#F1E9E0;color:var(--red);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.req-head h3{margin:0;font-size:17px}
.req-list{display:grid;gap:10px}
.req-list>div{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:baseline;font-size:14px}
.req-list dt{color:var(--muted);white-space:nowrap}
.req-list dd{text-align:right;font-weight:600;font-variant-numeric:tabular-nums}
.req-note{
  margin-top:22px;padding:16px 20px;border:1px dashed var(--line);border-radius:var(--radius-input);
  background:#FBF7F1;font-size:14px;color:var(--muted);
}

/* 评价墙 */
.review-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;align-items:start}
.review{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);transition:transform .22s,box-shadow .22s;
}
.review:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.review:nth-child(2),.review:nth-child(5){margin-top:26px}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:42px;height:42px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(150deg,#3A343A,#17161A);color:#F1E9E0;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
}
.review-name{font-weight:650;font-size:15px;line-height:1.3}
.stars{color:var(--amber);font-size:13px;letter-spacing:2px}
.review p{font-size:14.5px;color:var(--muted);line-height:1.8}
.review-date{margin-top:12px;font-size:12.5px;color:#9A9299;font-variant-numeric:tabular-nums}

/* CTA 下载区 */
.cta-band{position:relative;overflow:hidden;background:var(--ink);color:#F5F1EC;padding:72px 0}
.cta-band .stripe{
  position:absolute;inset:0;opacity:.08;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,#fff 0 8px,transparent 8px 16px);
}
.cta-band .bg-img{
  position:absolute;inset:0;opacity:.22;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center}
.cta-inner h2{color:#fff;max-width:560px}
.cta-inner p{color:#C6BFB8;margin-top:14px;max-width:560px;font-size:15.5px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.qr-box{
  width:112px;height:112px;border-radius:12px;background:#fff;padding:10px;
  box-shadow:var(--shadow-2);flex:0 0 auto;
}
.qr-code{
  width:100%;height:100%;border-radius:6px;
  background-color:var(--ink);
  background-image:
    linear-gradient(90deg,#fff 0 60%,transparent 60%),
    linear-gradient(180deg,#fff 0 40%,transparent 40%),
    linear-gradient(90deg,transparent 0 30%,#fff 30% 70%,transparent 70%),
    linear-gradient(180deg,transparent 0 55%,#fff 55% 85%,transparent 85%);
  background-size:26px 26px,22px 22px,18px 18px,20px 20px;
  background-position:0 0,4px 6px,8px 2px,2px 10px;
}
.qr-label{margin-top:10px;font-size:12.5px;color:#B8B0A9;text-align:center}
.cta-checks{
  position:relative;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px 30px;font-size:13.5px;color:#B8B0A9;
  font-variant-numeric:tabular-nums;
}
.cta-checks span strong{color:#fff;font-weight:650;margin-left:6px}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.news-card{
  display:flex;gap:18px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-1);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#DCCFC0}
.news-date{
  flex:0 0 auto;width:62px;text-align:center;border-right:1px solid var(--line);padding-right:12px;
  display:flex;flex-direction:column;justify-content:center;gap:2px;
}
.news-day{font-size:14px;font-weight:750;color:var(--ink);line-height:1.3;font-variant-numeric:tabular-nums}
.news-month{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.news-main{min-width:0;flex:1}
.news-title{
  font-size:16.5px;font-weight:650;line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover .news-title{color:var(--red)}
.news-sum{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:12px;display:flex;align-items:center;gap:10px;font-size:12.5px;color:#9A9299}
.news-arrow{margin-left:auto;color:var(--red);font-weight:700;transition:transform .2s}
.news-card:hover .news-arrow{transform:translateX(4px)}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#FBF7F1;
  padding:44px 26px;text-align:center;
}
.empty-state .icon{
  width:48px;height:48px;margin:0 auto 14px;border-radius:12px;border:1.5px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:20px;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}

/* FAQ */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 46px 22px 0;position:relative;
  font-size:17px;font-weight:650;line-height:1.5;transition:color .2s;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:8px;top:50%;width:11px;height:11px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:translateY(-70%) rotate(45deg);transition:transform .25s,border-color .2s;
}
.faq details[open] summary{color:var(--red)}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--red)}
.faq summary:hover{color:var(--red)}
.faq-body{padding:0 60px 26px 0;color:var(--muted);font-size:15px;line-height:1.85}
.faq-body p+p{margin-top:10px}

/* 页脚 */
.site-footer{background:var(--ink);color:#BEB7B0;padding:70px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px;font-size:14px}
.footer-desc{line-height:1.8;max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:34px;height:34px;border-radius:8px;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:#DDD6CF;
  transition:background .2s,color .2s,border-color .2s;
}
.footer-social a:hover{background:#fff;color:var(--ink);border-color:#fff}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-links{display:grid;gap:11px}
.footer-links a{color:#BEB7B0;transition:color .2s}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-dl{display:grid;gap:10px}
.footer-dl a{
  display:flex;align-items:center;justify-content:space-between;
  border:1px solid rgba(255,255,255,.18);border-radius:10px;padding:11px 14px;
  color:#E6E0DA;transition:background .2s,border-color .2s,color .2s;
}
.footer-dl a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
  font-size:13px;color:#948D87;
}
.footer-bottom a{color:#BEB7B0}
.footer-bottom a:hover{color:#fff}

/* 滚动进度 */
.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--red);width:0;z-index:80}

@media (max-width:1279px){
  .hero-inner{grid-template-columns:6fr 6fr;gap:40px}
  .slide{flex:0 0 calc((100% - 18px)/2.4)}
}
@media (max-width:1024px){
  :root{--sp-section:72px}
  .req-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .nav-group{display:none}
  .nav-toggle{display:flex}
  .header-inner{justify-content:space-between}
  .brand{order:-1}
}
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:38px}
  .hero{padding:56px 0 64px}
  .value-grid{grid-template-columns:1fr}
  .value-item:nth-child(even){transform:none}
  .value-item:nth-child(even):hover{transform:translateY(-2px)}
  .review-wall{grid-template-columns:repeat(2,1fr)}
  .review:nth-child(2),.review:nth-child(5){margin-top:0}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .slide{flex:0 0 76%}
}
@media (max-width:640px){
  :root{--sp-section:48px}
  .container{padding:0 20px}
  .section-tight{padding:48px 0}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .req-grid{grid-template-columns:1fr}
  .review-wall{grid-template-columns:1fr}
  .slide{flex:0 0 86%}
  .news-card{flex-direction:row;padding:18px 16px;gap:14px}
  .news-date{width:54px}
  .footer-grid{grid-template-columns:1fr}
  .topbar .container{justify-content:flex-start;padding-left:20px;font-size:12.5px}
  .brand{font-size:17px}
  .faq summary{font-size:16px;padding:18px 40px 18px 0}
  .faq-body{padding:0 20px 22px 0}
  .cta-checks{gap:10px 20px}
}

/* roulang page: category1 */
:root{
  --red:#A6172B;
  --red-dark:#7E0F20;
  --red-light:#C9464F;
  --ink:#17161A;
  --olive:#2E5E4E;
  --amber:#D98E2B;
  --sand:#F6F1EA;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#2A272D;
  --muted:#6B6469;
  --radius-card:14px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --sp-section:96px;
  --container:1200px;
  --font:PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,system-ui,-apple-system,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,opacity .18s ease;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:650;line-height:1.45;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--olive);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){ .container{max-width:1240px;} }

/* ============ 顶部提示条 ============ */
.topbar{
  background:var(--ink);
  color:#F3EDE4;
  font-size:13px;
  height:36px;
  display:flex;
  align-items:center;
  position:relative;
  z-index:60;
}
.topbar .container{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
}
.topbar strong{color:#fff;font-weight:650;}
.topbar .dot{width:6px;height:6px;border-radius:50%;background:var(--red-light);display:inline-block;}
.topbar-close{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  background:transparent;border:1px solid rgba(255,255,255,.28);color:#EDE6DC;
  width:22px;height:22px;line-height:1;border-radius:6px;cursor:pointer;font-size:13px;
  display:flex;align-items:center;justify-content:center;
}
.topbar-close:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);}
.topbar.is-hidden{display:none;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,241,234,.94);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s ease,border-color .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-1);
  background:rgba(246,241,234,.98);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:72px;
}
.nav-group{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link:hover{color:var(--red);background:rgba(166,23,43,.06);}
.nav-link.is-active{color:var(--red);font-weight:650;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--red);border-radius:2px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 10px;border-radius:var(--radius-btn);
}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:flex;align-items:center;justify-content:center;
  background:var(--red);color:#fff;
  font-size:13px;font-weight:800;letter-spacing:.02em;
  border-radius:8px;
  font-variant-numeric:tabular-nums;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-0.01em;white-space:nowrap;}
.brand:hover .brand-text{color:var(--red);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:650;
  padding:11px 20px;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-sm{padding:8px 14px;font-size:14px;}
.btn-primary{background:var(--red);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--red-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;}
.btn-ghost{background:transparent;color:var(--red);}
.btn-ghost:hover{background:rgba(166,23,43,.08);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--card);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:18px 0 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:#B8AFA5;}
.breadcrumb a:hover{color:var(--red);}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ============ HERO ============ */
.cat-hero{
  position:relative;
  margin-top:18px;
  border-radius:var(--radius-card);
  overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(120deg,rgba(23,22,26,.92),rgba(23,22,26,.78)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#F4EEE6;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 1px,transparent 1px 8px);
  pointer-events:none;
}
.cat-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:36px;
  align-items:center;
  padding:52px 48px;
  min-height:320px;
}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  border:1px solid var(--red);
  color:var(--red);
  background:transparent;
  font-variant-numeric:tabular-nums;
  line-height:1.5;
}
.badge-solid{background:var(--red);color:#fff;border-color:var(--red);}
.badge-sand{background:var(--sand);color:var(--ink);border-color:var(--line);}
.badge-olive{background:rgba(46,94,78,.1);color:var(--olive);border-color:rgba(46,94,78,.35);}
.badge-amber{background:rgba(217,142,43,.12);color:#9A6316;border-color:rgba(217,142,43,.4);}
.cat-hero .badge{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.35);color:#F6EFE6;}
.cat-hero h1{
  font-size:clamp(30px,4vw,50px);
  font-weight:800;
  line-height:1.2;
  color:#fff;
  letter-spacing:-0.01em;
}
.cat-hero .lede{
  margin-top:16px;
  max-width:640px;
  font-size:16px;
  line-height:1.85;
  color:rgba(246,239,230,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cat-hero .btn-outline{border-color:rgba(255,255,255,.6);color:#fff;}
.cat-hero .btn-outline:hover{background:#fff;color:var(--ink);}
.hero-meta{
  margin-top:16px;
  font-size:12px;
  letter-spacing:.01em;
  color:rgba(246,239,230,.7);
  font-variant-numeric:tabular-nums;
}
.hero-figure{
  position:relative;
}
.hero-figure img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 24px 50px -24px rgba(0,0,0,.7);
}
.hero-figure .figtag{
  position:absolute;left:14px;bottom:14px;
  background:rgba(23,22,26,.82);
  border:1px solid rgba(255,255,255,.2);
  color:#F6EFE6;font-size:12px;
  padding:5px 10px;border-radius:var(--radius-badge);
  font-variant-numeric:tabular-nums;
}

/* ============ 板块通用 ============ */
.section{padding:var(--sp-section) 0 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:650;letter-spacing:.08em;
  color:var(--red);text-transform:uppercase;margin-bottom:12px;
}
.section-head .kicker::before{content:"";width:22px;height:2px;background:var(--red);border-radius:2px;}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.85;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center .kicker{justify-content:center;}

/* ============ 版本编号长列表 ============ */
.version-list{border-top:1px solid var(--line);}
.version-item{
  display:grid;
  grid-template-columns:78px 1fr auto;
  gap:24px;
  align-items:start;
  padding:28px 8px;
  border-bottom:1px solid var(--line);
  transition:background-color .18s ease,padding-left .18s ease;
}
.version-item:hover{background:rgba(255,255,255,.72);padding-left:16px;}
.version-no{
  font-size:26px;font-weight:800;color:var(--line);
  font-variant-numeric:tabular-nums;line-height:1.2;
  transition:color .18s ease;
}
.version-item:hover .version-no{color:var(--red-light);}
.version-body h3{margin-bottom:8px;}
.version-body p{color:var(--muted);font-size:15px;max-width:720px;}
.version-spec{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;
}
.spec{
  font-size:13px;color:var(--muted);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-badge);
  padding:3px 9px;
  font-variant-numeric:tabular-nums;
}
.version-side{
  display:flex;flex-direction:column;align-items:flex-end;gap:10px;
  min-width:150px;
}

/* ============ 平台对照 ============ */
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.p-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.p-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.p-card .p-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.p-icon{
  width:36px;height:36px;flex:0 0 36px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(166,23,43,.09);color:var(--red);font-size:16px;
}
.p-card h3{font-size:18px;}
.p-card dl{margin:0;}
.p-card dt{font-size:13px;color:var(--muted);margin-top:12px;}
.p-card dd{margin:2px 0 0;font-size:15px;font-weight:600;color:var(--ink);font-variant-numeric:tabular-nums;}
.compat-note{
  margin-top:22px;
  display:flex;align-items:flex-start;gap:10px;
  background:rgba(46,94,78,.07);
  border:1px solid rgba(46,94,78,.24);
  border-radius:var(--radius-card);
  padding:14px 18px;
  font-size:14px;color:#264C40;
}
.compat-note i{margin-top:4px;color:var(--olive);}

/* ============ 适用场景 2x2 要点 ============ */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:22px;
}
.scene-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  display:flex;gap:16px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.scene-card .s-num{
  font-size:14px;font-weight:800;color:#fff;background:var(--ink);
  width:32px;height:32px;flex:0 0 32px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{color:var(--muted);font-size:15px;}

/* ============ 下载流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  counter-reset:flow;
}
.flow-step{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 22px 22px;
  box-shadow:var(--shadow-1);
}
.flow-step::before{
  counter-increment:flow;
  content:"0" counter(flow);
  position:absolute;top:-14px;left:22px;
  background:var(--red);color:#fff;
  font-size:13px;font-weight:800;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-variant-numeric:tabular-nums;
}
.flow-step h3{font-size:17px;margin:10px 0 8px;}
.flow-step p{color:var(--muted);font-size:14.5px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);max-width:920px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:0;cursor:pointer;
  padding:22px 4px;
  text-align:left;
  font-size:17px;font-weight:650;color:var(--ink);
  transition:color .18s ease;
}
.faq-q:hover{color:var(--red);}
.faq-q .fq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);
  font-size:13px;transition:transform .22s ease,color .18s ease,border-color .18s ease;
}
.faq-item.is-open .fq-icon{transform:rotate(45deg);color:var(--red);border-color:var(--red-light);}
.faq-a{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .28s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a p{
  padding:0 0 22px;max-width:760px;
  color:var(--muted);font-size:15.5px;line-height:1.9;
}

/* ============ 底部下载 CTA ============ */
.cta-band{
  margin-top:var(--sp-section);
  position:relative;
  background:var(--ink);
  color:#F4EEE6;
  overflow:hidden;
  border-radius:var(--radius-card);
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 8px);
}
.cta-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto;
  gap:36px;
  align-items:center;
  padding:56px 48px;
}
.cta-inner h2{color:#fff;font-size:clamp(24px,2.6vw,32px);}
.cta-inner p{margin-top:14px;color:rgba(244,238,230,.8);max-width:640px;font-size:15.5px;}
.cta-right{display:flex;align-items:center;gap:26px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-band .btn-outline{border-color:rgba(255,255,255,.55);color:#fff;}
.cta-band .btn-outline:hover{background:#fff;color:var(--ink);}
.qr-box{
  width:96px;height:96px;flex:0 0 96px;
  background:#fff;border-radius:12px;
  padding:8px;display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(5,1fr);gap:2px;
}
.qr-box span{background:var(--ink);border-radius:1px;}
.qr-box span:nth-child(2n){background:transparent;}
.qr-caption{
  margin-top:8px;text-align:center;font-size:12px;color:rgba(244,238,230,.7);
}
.cta-checks{
  position:relative;
  margin-top:6px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13px;color:rgba(244,238,230,.72);
  font-variant-numeric:tabular-nums;
}
.cta-checks span{display:inline-flex;align-items:center;gap:7px;}
.cta-checks i{color:var(--olive);}

/* ============ 交叉链接 ============ */
.cross-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
}
.cross-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px 22px;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--red-light);}
.cross-card h3{font-size:18px;margin-bottom:8px;}
.cross-card p{color:var(--muted);font-size:14.5px;margin-bottom:16px;}
.cross-link{color:var(--red);font-size:14px;font-weight:650;display:inline-flex;align-items:center;gap:8px;}
.cross-link i{transition:transform .18s ease;}
.cross-card:hover .cross-link i{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--sp-section);
  background:var(--ink);
  color:#CFC7BD;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand span:last-child{font-size:17px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#A79E94;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:34px;height:34px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);
  color:#EDE6DC;font-size:14px;
}
.footer-social a:hover{background:var(--red);border-color:var(--red);color:#fff;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:#A79E94;width:fit-content;position:relative;}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--red-light);
  transition:width .2s ease;
}
.footer-links a:hover{color:#fff;}
.footer-links a:hover::after{width:100%;}
.footer-dl{display:flex;flex-direction:column;gap:10px;}
.footer-dl a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14px;color:#EDE6DC;
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-btn);
  padding:10px 14px;
  transition:background-color .18s ease,border-color .18s ease;
}
.footer-dl a span{font-size:12px;color:#958C82;font-variant-numeric:tabular-nums;}
.footer-dl a:hover{background:rgba(166,23,43,.9);border-color:var(--red);}
.footer-dl a:hover span{color:rgba(255,255,255,.8);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13px;color:#8C8479;
}
.footer-bottom a{color:#B7AEA4;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .cat-hero-inner{grid-template-columns:6fr 6fr;padding:44px 36px;}
  .platform-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:64px;}
  .nav-group{
    display:none;
  }
  .nav-toggle{display:flex;}
  .brand{justify-self:center;}
  .brand-text{font-size:16px;}
  .header-inner>.nav-right{display:none;}
  .site-header.is-open .nav-group{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    position:absolute;left:0;right:0;top:100%;
    background:var(--sand);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:16px 24px 22px;
    box-shadow:var(--shadow-2);
  }
  .site-header.is-open .nav-right{display:flex;}
  .site-header.is-open .nav-link{padding:12px 8px;font-size:16px;}
  .site-header.is-open .nav-link.is-active::after{left:8px;right:auto;width:22px;}
  .site-header.is-open .btn{width:100%;margin-top:8px;}
  .cat-hero-inner{grid-template-columns:1fr;padding:36px 26px;gap:26px;min-height:0;}
  .scene-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;padding:44px 30px;}
  .cta-right{justify-content:flex-start;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .version-item{grid-template-columns:56px 1fr;gap:16px;}
  .version-side{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;flex-wrap:wrap;}
}
@media (max-width:767px){
  :root{--sp-section:48px;}
  .container{padding:0 20px;}
  .cat-hero-inner{padding:30px 20px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .platform-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .cta-inner{padding:36px 22px;}
  .cta-right{flex-direction:column;align-items:flex-start;gap:18px;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .version-item{padding:22px 2px;grid-template-columns:44px 1fr;}
  .version-no{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .cat-hero h1{font-size:26px;}
  .section-head p{font-size:15px;}
}

/* roulang page: article */
:root{
  --c-brick:#A6172B;
  --c-brick-dark:#7E0F20;
  --c-brick-light:#C9464F;
  --c-ink:#17161A;
  --c-ink-soft:#232227;
  --c-olive:#2E5E4E;
  --c-amber:#D98E2B;
  --c-bg:#F6F1EA;
  --c-card:#FFFFFF;
  --c-line:#E7DFD3;
  --c-text:#2A272D;
  --c-muted:#6B6469;
  --r-card:14px;
  --r-input:10px;
  --r-btn:10px;
  --r-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --sp-section:96px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-olive);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--container:1240px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,241,234,.95);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:var(--shadow-1)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;height:74px;
}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-left{justify-content:flex-start;order:1}
.nav-right{justify-content:flex-end;order:3;gap:20px}
.brand{order:2;display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  width:36px;height:36px;border-radius:9px;
  background:linear-gradient(145deg,var(--c-brick) 0%,var(--c-brick-dark) 100%);
  color:#fff;font-size:14px;font-weight:800;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -8px rgba(166,23,43,.75);
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);white-space:nowrap}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text);
  padding:6px 2px;transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-brick);
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.nav-link:hover{color:var(--c-brick)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-brick);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;order:1;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1.5px solid transparent;transition:all .2s ease;cursor:pointer;white-space:nowrap;
}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}
.btn-primary{background:var(--c-brick);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--c-brick-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);background:var(--c-brick-dark)}
.btn-outline{border-color:var(--c-ink);color:var(--c-ink);background:transparent}
.btn-outline:hover{background:var(--c-ink);color:#fff;transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{color:var(--c-brick);background:transparent}
.btn-ghost:hover{background:#fff;box-shadow:var(--shadow-1)}
.btn:disabled,.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-badge);font-size:13px;font-weight:600;
  background:#fff;border:1px solid var(--c-line);color:var(--c-muted);
}
.badge-brick{border-color:var(--c-brick-light);color:var(--c-brick);background:#FCF4F5}
.badge-olive{border-color:#9CBBAF;color:var(--c-olive);background:#F1F6F3}
.badge-amber{border-color:#EBCB96;color:#8A5A12;background:#FDF7EC}

/* ---------- reading progress ---------- */
.read-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:120;
  background:transparent;pointer-events:none;opacity:0;transition:opacity .3s ease;
}
.read-progress[data-active="1"]{opacity:1}
.read-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--c-brick) 0%,var(--c-amber) 100%);transition:width .12s linear}

/* ---------- article head ---------- */
.article-head-wrap{
  background:
    repeating-linear-gradient(45deg,rgba(23,22,26,.045) 0 1px,transparent 1px 8px),
    #FBF7F1;
  border-bottom:1px solid var(--c-line);
  padding:26px 0 40px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px}
.breadcrumb a{color:var(--c-muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--c-brick)}
.breadcrumb .sep{color:#C3BAAE}
.breadcrumb .current{color:var(--c-text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:900px}
.head-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.article-head h1{
  font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.25;
  color:var(--c-ink);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:var(--c-muted)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CDC4B7}
.meta-row time{font-variant-numeric:tabular-nums}

/* ---------- layout ---------- */
.site-main{padding-bottom:0}
.section{padding:var(--sp-section) 0}
.article-body-section{padding:56px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
.article-main{min-width:0}

/* ---------- prose ---------- */
.prose{font-size:16px;line-height:1.9;color:var(--c-text);max-width:760px}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 18px}
.prose h2{
  position:relative;font-size:28px;font-weight:700;color:var(--c-ink);
  margin:44px 0 18px;padding-left:16px;line-height:1.35;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  background:var(--c-brick);border-radius:2px;
}
.prose h3{font-size:21px;font-weight:650;color:var(--c-ink);margin:30px 0 12px}
.prose h4{font-size:17px;font-weight:700;color:var(--c-ink);margin:22px 0 10px}
.prose a{color:var(--c-brick);border-bottom:1px solid rgba(166,23,43,.28);transition:border-color .2s ease,color .2s ease}
.prose a:hover{color:var(--c-brick-dark);border-bottom-color:var(--c-brick-dark)}
.prose strong{font-weight:700;color:var(--c-ink)}
.prose ul,.prose ol{margin:0 0 18px;padding-left:4px}
.prose ul li{position:relative;padding-left:20px;margin-bottom:10px}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:.68em;width:6px;height:6px;
  background:var(--c-brick);border-radius:1px;
}
.prose ol{counter-reset:li;padding-left:0}
.prose ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:li}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;
  font-size:13px;font-weight:800;color:var(--c-brick);font-variant-numeric:tabular-nums;
}
.prose blockquote{
  margin:24px 0;padding:16px 22px;background:#fff;border-left:4px solid var(--c-brick);
  border-radius:0 12px 12px 0;color:var(--c-muted);box-shadow:var(--shadow-1);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{
  width:100%;border-radius:12px;margin:24px auto;box-shadow:var(--shadow-1);
  background:var(--c-line);
}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px}
.prose table{
  width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;
  background:#fff;border-radius:var(--r-card);overflow:hidden;display:block;overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
.prose thead th{background:#F1EAE0;color:var(--c-ink);font-weight:700;text-align:left}
.prose th,.prose td{border:1px solid var(--c-line);padding:10px 14px;white-space:nowrap;font-variant-numeric:tabular-nums}
.prose tbody tr:nth-child(even){background:var(--c-bg)}
.prose code{background:#F1EAE0;padding:2px 6px;border-radius:5px;font-size:14px}
.prose hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}

/* ---------- empty state ---------- */
.empty-state{
  background:var(--c-card);border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:14px;
  border:1.5px solid var(--c-line);display:flex;align-items:center;justify-content:center;
  color:var(--c-muted);font-size:20px;font-weight:800;background:var(--c-bg);
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--c-ink);margin-bottom:10px}
.empty-state p{color:var(--c-muted);font-size:15px;margin-bottom:22px}
.skeleton{background:linear-gradient(90deg,#EFE8DD 25%,#F7F2EA 37%,#EFE8DD 63%);background-size:400% 100%;animation:shimmer 1.4s ease infinite;border-radius:8px}
@keyframes shimmer{0%{background-position:100% 0}100%{background-position:0 0}}

/* ---------- tag row ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:36px 0 0;max-width:760px}
.tag{
  display:inline-flex;align-items:center;padding:6px 12px;border-radius:var(--r-badge);
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-muted);
  transition:all .2s ease;
}
.tag:hover{border-color:var(--c-brick-light);color:var(--c-brick);transform:translateY(-1px)}

/* ---------- in-article cta ---------- */
.article-cta{
  max-width:760px;margin:34px 0 0;padding:26px 28px;background:#fff;
  border:1.5px solid var(--c-brick);border-radius:var(--r-card);box-shadow:var(--shadow-1);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.article-cta h3{font-size:19px;font-weight:700;color:var(--c-ink);margin-bottom:6px}
.article-cta p{font-size:14px;color:var(--c-muted)}
.article-cta .btn{flex-shrink:0}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .25s ease,transform .25s ease;
}
.side-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.side-card h3{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:8px;height:8px;border-radius:2px;background:var(--c-brick)}
.side-links{display:flex;flex-direction:column;gap:2px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:14px;color:var(--c-text);
  transition:background .2s ease,color .2s ease;
}
.side-links a::after{content:"›";color:#C3BAAE;font-size:16px;line-height:1}
.side-links a:hover{background:var(--c-bg);color:var(--c-brick)}
.side-links a:hover::after{color:var(--c-brick)}
.side-cover{border-radius:10px;overflow:hidden;aspect-ratio:16/10;background:var(--c-line);margin-bottom:12px}
.side-cover img{width:100%;height:100%;object-fit:cover}
.side-card p.side-desc{font-size:13px;color:var(--c-muted);line-height:1.7;margin-bottom:14px}
.side-card .btn{width:100%}
.side-card.is-olive{border-color:#B9D0C6;background:#F3F8F5}
.side-card.is-olive h3::before{background:var(--c-olive)}
.side-list{display:flex;flex-direction:column;gap:10px}
.side-list li{display:flex;gap:8px;font-size:13.5px;color:var(--c-muted);line-height:1.7}
.side-list li::before{content:"✓";color:var(--c-olive);font-weight:800;flex-shrink:0}

/* ---------- post nav ---------- */
.post-nav-section{padding:56px 0 0}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.post-nav-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--shadow-1);transition:all .25s ease;
  display:flex;flex-direction:column;gap:8px;
}
.post-nav-item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DED4C5}
.pn-label{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--c-brick);text-transform:uppercase}
.pn-title{font-size:15.5px;font-weight:600;color:var(--c-ink);line-height:1.6}
.post-nav-item.is-next{text-align:right;align-items:flex-end}

/* ---------- related ---------- */
.related{padding:var(--sp-section) 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;color:var(--c-ink)}
.section-head p{font-size:14px;color:var(--c-muted);margin-top:8px}
.link-more{font-size:14px;font-weight:600;color:var(--c-brick);display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-more:hover{color:var(--c-brick-dark)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DED4C5}
.card-thumb{aspect-ratio:16/10;background:var(--c-line);overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-thumb img{transform:scale(1.04)}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:16.5px;font-weight:700;color:var(--c-ink);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body p{
  font-size:14px;color:var(--c-muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px}
.card-foot .arrow{color:var(--c-brick);font-weight:800}

/* ---------- dark cta ---------- */
.cta-block{
  margin-top:var(--sp-section);
  background:
    repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 8px,transparent 8px 16px),
    linear-gradient(180deg,var(--c-ink) 0%,#100F13 100%);
  color:#fff;position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(166,23,43,.55) 0%,rgba(166,23,43,0) 70%);
}
.cta-inner{
  position:relative;z-index:2;padding:72px 24px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:48px;align-items:center;
}
.cta-copy h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;line-height:1.3;margin-bottom:14px}
.cta-copy p{font-size:15px;color:rgba(255,255,255,.72);max-width:620px;line-height:1.85}
.cta-btns{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 20px}
.cta-btns .btn-primary{background:var(--c-brick);border-color:var(--c-brick)}
.cta-btns .btn-outline{border-color:rgba(255,255,255,.45);color:#fff}
.cta-btns .btn-outline:hover{background:#fff;color:var(--c-ink);border-color:#fff}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:rgba(255,255,255,.66);
  font-variant-numeric:tabular-nums;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;
}
.cta-side{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr{
  width:112px;height:112px;border-radius:12px;background:#fff;padding:10px;
  display:grid;grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(5,1fr);gap:3px;
}
.qr i{background:var(--c-ink);border-radius:1px}
.qr i.is-off{background:transparent}
.cta-side span{font-size:12.5px;color:rgba(255,255,255,.6)}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:36px;height:36px;border-radius:9px;border:1px solid rgba(255,255,255,.18);
  display:flex;align-items:center;justify-content:center;font-size:13px;color:rgba(255,255,255,.8);
  transition:all .2s ease;
}
.footer-social a:hover{background:var(--c-brick);border-color:var(--c-brick);color:#fff;transform:translateY(-2px)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s ease,padding-left .2s ease}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-dl{display:flex;flex-direction:column;gap:10px}
.footer-dl a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  font-size:14px;color:rgba(255,255,255,.86);transition:all .2s ease;
}
.footer-dl a span{font-size:12px;color:rgba(255,255,255,.5)}
.footer-dl a:hover{border-color:var(--c-brick-light);background:rgba(166,23,43,.18);color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;font-size:13px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:40px}
  :root{--sp-section:80px}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .header-inner{display:flex;flex-wrap:wrap;align-items:center;height:64px;padding-top:8px;padding-bottom:8px;gap:10px}
  .nav-toggle{display:flex}
  .brand{margin:0 auto;order:2}
  .nav-group{display:none;width:100%;order:6;flex-direction:column;align-items:stretch;gap:0}
  .nav-right{order:3;width:auto;display:flex}
  .nav-right .nav-link{display:none}
  .site-header.is-open .nav-left,
  .site-header.is-open .nav-right{
    display:flex;flex-direction:column;align-items:stretch;width:100%;
    border-top:1px solid var(--c-line);padding-top:8px;padding-bottom:8px;
  }
  .site-header.is-open .nav-left{order:5}
  .site-header.is-open .nav-right{order:6;border-top:0;padding-top:0}
  .site-header.is-open .nav-right .nav-link{display:block}
  .site-header.is-open .nav-right .btn{width:100%;margin:10px 0 4px}
  .nav-link{padding:12px 4px;font-size:16px}
  .nav-link::after{display:none}
  .article-head-wrap{padding:18px 0 30px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .sidebar{position:static;flex-direction:column}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:minmax(0,1fr);padding:56px 24px;gap:32px}
  .cta-side{align-items:flex-start}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .prose{max-width:100%}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-body-section{padding:36px 0 0}
  .prose h2{font-size:23px;margin:34px 0 14px;padding-left:13px}
  .prose h3{font-size:19px}
  .article-cta{flex-direction:column;align-items:flex-start;padding:22px}
  .article-cta .btn{width:100%}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav-item.is-next{text-align:left;align-items:flex-start}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-btns{flex-direction:column;width:100%}
  .cta-btns .btn{width:100%}
  .footer-bottom{flex-direction:column}
}
@media (max-width:479px){
  .brand-text{font-size:16px}
  .brand-mark{width:32px;height:32px;font-size:13px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-head h1{font-size:24px}
  .meta-row{font-size:13px;gap:8px}
}

/* roulang page: category2 */
:root{
  --brick:#A6172B;
  --brick-dark:#7E0F20;
  --brick-light:#C9464F;
  --ink:#17161A;
  --olive:#2E5E4E;
  --amber:#D98E2B;
  --sand:#F6F1EA;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#2A272D;
  --muted:#6B6469;
  --radius-card:14px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --sp-section:96px;
  --container:1200px;
  --header-h:68px;
  --font:PingFang SC,"Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(30px,4vw,50px);font-weight:800;line-height:1.2}
h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.3}
h3{font-size:20px;font-weight:650;line-height:1.4}
p{margin:0 0 14px;max-width:720px}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.num{font-variant-numeric:tabular-nums}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--olive);outline-offset:2px}
.btn-primary{background:var(--brick);color:#fff}
.btn-primary:hover{background:var(--brick-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{color:var(--brick);background:transparent}
.btn-ghost:hover{background:var(--sand)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:8px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-size:13px;
  font-weight:600;
  line-height:1.6;
  border-radius:var(--radius-badge);
  border:1px solid var(--brick-light);
  color:var(--brick);
  background:#fff;
}
.badge-solid{background:var(--brick);border-color:var(--brick);color:#fff}
.badge-sand{background:var(--sand);border-color:var(--line);color:var(--muted)}
.badge-olive{border-color:var(--olive);color:var(--olive)}
.tagline{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 顶部细条 ---------- */
.topbar{
  background:var(--ink);
  color:#fff;
  font-size:13px;
  height:36px;
  display:flex;
  align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-close{
  background:transparent;border:1px solid rgba(255,255,255,.34);color:#fff;
  width:22px;height:22px;line-height:1;border-radius:5px;cursor:pointer;font-size:13px;
  transition:background .2s ease,border-color .2s ease;
}
.topbar-close:hover{background:rgba(255,255,255,.14);border-color:#fff}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  min-height:var(--header-h);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  justify-self:center;
}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brick);
  color:#fff;
  font-size:13px;font-weight:800;letter-spacing:.04em;
  border-radius:9px;
}
.brand-text{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.nav-group{display:flex;align-items:center;gap:6px}
.nav-left{justify-self:start}
.nav-right{justify-self:end;gap:12px}
.nav-link{
  position:relative;
  padding:8px 12px;
  font-size:14.5px;
  font-weight:600;
  color:var(--text);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--brick);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--brick)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brick)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  position:relative;
  z-index:80;
}
.nav-toggle span{display:block;height:2px;width:20px;margin:0 auto;background:var(--ink);transition:transform .25s ease,opacity .2s ease}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  padding:20px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color .2s ease}
.breadcrumb a:hover{color:var(--brick)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  margin-top:16px;
  border-radius:var(--radius-card);
  overflow:hidden;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  background-color:var(--ink);
  background-image:
    linear-gradient(90deg,rgba(23,22,26,.88) 0%,rgba(23,22,26,.72) 52%,rgba(23,22,26,.5) 100%),
    repeating-linear-gradient(45deg,rgba(255,255,255,.055) 0 2px,transparent 2px 8px),
    url("/assets/images/backpic/back-1.webp");
  background-size:cover,auto,cover;
  background-position:center,center,center;
}
.page-hero-inner{padding:40px 40px 44px;max-width:820px}
.page-hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:#fff;background:rgba(166,23,43,.9);
  padding:5px 12px;border-radius:6px;margin-bottom:16px;
}
.page-hero h1{color:#fff;margin-bottom:14px}
.page-hero p{color:rgba(255,255,255,.86);font-size:16px;margin:0;max-width:660px}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .kicker{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--brick);
  margin-bottom:10px;
}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15.5px}

/* ---------- 图文交替 ---------- */
.media-row{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:48px;
  align-items:center;
  padding:32px 0;
  border-top:1px solid var(--line);
}
.media-row:first-of-type{border-top:none;padding-top:0}
.media-row.reverse .media-text{order:2}
.media-row.reverse .media-figure{order:1}
.media-figure{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-1);
  aspect-ratio:16/10;
}
.media-figure img{width:100%;height:100%;object-fit:cover}
.media-text h3{margin-bottom:12px}
.media-text p{color:var(--text);font-size:15.8px}
.square-list{margin-top:8px}
.square-list li{
  position:relative;
  padding-left:20px;
  margin-bottom:10px;
  font-size:15px;
  color:var(--text);
}
.square-list li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:7px;height:7px;
  background:var(--brick);
  border-radius:1px;
}
.step-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:8px;
  background:var(--sand);border:1px solid var(--line);
  font-size:13px;font-weight:800;color:var(--brick);
  margin-bottom:12px;
}

/* ---------- 2 列要点卡 ---------- */
.point-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.point-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 26px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.point-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DCD2C2}
.point-card h3{margin-bottom:10px;font-size:19px}
.point-card p{font-size:15px;color:var(--muted);margin-bottom:12px}
.point-card .meta{
  display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);
  border-top:1px dashed var(--line);padding-top:12px;
}
.point-icon{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(166,23,43,.08);color:var(--brick);
  font-weight:800;font-size:15px;margin-bottom:14px;
}

/* ---------- 定义列表卡 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
}
.check-item{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px;
  box-shadow:var(--shadow-1);
}
.check-mark{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  background:rgba(46,94,78,.12);
  color:var(--olive);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;margin-top:3px;
}
.check-item dl{margin:0}
.check-item dt{font-weight:650;font-size:15px;color:var(--ink)}
.check-item dd{margin:4px 0 0;font-size:14px;color:var(--muted)}

/* ---------- 参数条 ---------- */
.spec-strip{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-top:28px;
}
.spec-strip div{background:#fff;padding:18px 20px}
.spec-strip dt{font-size:13px;color:var(--muted)}
.spec-strip dd{margin:6px 0 0;font-size:17px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}

/* ---------- 状态样式 ---------- */
.alert{
  border-radius:12px;
  padding:14px 18px;
  font-size:14.5px;
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-top:16px;
}
.alert-success{background:rgba(46,94,78,.08);border:1px solid rgba(46,94,78,.32);color:#24503F}
.alert-error{background:rgba(166,23,43,.06);border:1.5px solid var(--brick);color:var(--brick-dark)}
.skeleton{
  height:16px;border-radius:6px;
  background:linear-gradient(90deg,#EFE7DB 0%,#F7F2EA 40%,#EFE7DB 80%);
  background-size:220% 100%;
  animation:shimmer 1.4s infinite linear;
}
@keyframes shimmer{0%{background-position:120% 0}100%{background-position:-120% 0}}
.empty-state{
  text-align:center;padding:48px 24px;
  border:1px dashed var(--line);border-radius:var(--radius-card);background:#fff;
}
.empty-state p{color:var(--muted);margin:10px auto 18px;max-width:420px}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--sp-section);
  background-color:var(--ink);
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 2px,transparent 2px 8px);
  color:#fff;
  padding:64px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:44px;
  align-items:center;
}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.78);max-width:520px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.cta-band .btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.cta-band .btn-outline:hover{background:#fff;color:var(--ink);border-color:#fff}
.cta-check{
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.16);
  font-size:13px;
  color:rgba(255,255,255,.72);
  font-variant-numeric:tabular-nums;
}
.qr-box{
  width:96px;height:96px;flex:0 0 96px;
  border-radius:12px;
  background:rgba(255,255,255,.94);
  color:var(--ink);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;
  font-size:12px;font-weight:700;
  line-height:1.4;
}
.qr-box span{font-size:20px;line-height:1}

/* ---------- 交叉链接 ---------- */
.cross-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.cross-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.cross-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DCD2C2}
.cross-card h3{font-size:18px;margin-bottom:8px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.cross-card h3 .arrow{color:var(--brick);font-weight:800;transition:transform .2s ease}
.cross-card:hover h3 .arrow{transform:translateX(4px)}
.cross-card p{font-size:14.5px;color:var(--muted);margin:0}
.cross-card.is-current{border-color:var(--brick);border-width:1.5px;background:#FFF9F9}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.78);
  padding:64px 0 26px;
  margin-top:var(--sp-section);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px}
.footer-desc{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:16px;max-width:320px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.footer-links,.footer-dl{display:flex;flex-direction:column;gap:9px;font-size:14px}
.footer-links a,.footer-dl a{color:rgba(255,255,255,.72);transition:color .2s ease,transform .2s ease;width:fit-content}
.footer-links a:hover,.footer-dl a:hover{color:#fff;transform:translateX(2px)}
.footer-dl a{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:9px}
.footer-dl a span{font-size:12px;color:rgba(255,255,255,.5)}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:34px;height:34px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);color:#fff;font-size:13px;font-weight:700;
  transition:background .2s ease,transform .2s ease;
}
.footer-social a:hover{background:var(--brick);transform:translateY(-2px)}
.footer-bottom{
  margin-top:44px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1080px}
}
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .media-row{gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-grid > .footer:last-child{grid-column:1 / -1}
}
@media (max-width:900px){
  .nav-toggle{display:flex}
  .nav-left,.nav-right{display:none}
  .header-inner{grid-template-columns:auto 1fr auto;gap:12px}
  .nav-toggle{grid-column:1;grid-row:1;justify-self:start}
  .brand{grid-column:2;grid-row:1;justify-self:center}
  .nav-right .btn{display:inline-flex}
  .site-header.menu-open .header-inner{
    display:flex;
    flex-direction:column;
    position:fixed;
    top:var(--header-h);left:0;right:0;bottom:0;
    background:#fff;
    padding:12px 24px 32px;
    overflow-y:auto;
    z-index:70;
    border-top:1px solid var(--line);
    align-items:stretch;
  }
  .site-header.menu-open .brand{display:none}
  .site-header.menu-open .nav-left,
  .site-header.menu-open .nav-right{display:flex;flex-direction:column;align-items:stretch;gap:0;justify-self:stretch}
  .site-header.menu-open .nav-link{
    display:block;width:100%;padding:15px 4px;font-size:16px;border-radius:0;
    border-bottom:1px solid var(--line);
  }
  .site-header.menu-open .nav-link::after{display:none}
  .site-header.menu-open .nav-right .btn{margin-top:18px;width:100%;display:flex}
  .site-header.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .site-header.menu-open .nav-toggle span:nth-child(2){opacity:0}
  .site-header.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .point-grid,.check-grid,.cross-grid{grid-template-columns:1fr}
  .spec-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  :root{--sp-section:48px;}
  .container{padding:0 20px}
  .page-hero{min-height:200px;margin-top:14px}
  .page-hero-inner{padding:24px 22px 26px}
  .page-hero p{font-size:15px}
  .media-row{grid-template-columns:1fr;gap:20px;padding:26px 0}
  .media-row.reverse .media-text{order:1}
  .media-row.reverse .media-figure{order:2}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-grid > .footer:last-child{grid-column:auto}
}
@media (max-width:520px){
  h1{font-size:29px}
  .btn{width:100%}
  .cta-actions{flex-direction:column;width:100%}
  .cta-band{padding:48px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .spec-strip{grid-template-columns:1fr}
  .page-hero-inner{padding:22px 18px 24px}
}

/* roulang page: category3 */
:root{
  --brick:#A6172B;
  --brick-dark:#7E0F20;
  --brick-light:#C9464F;
  --ink:#17161A;
  --olive:#2E5E4E;
  --amber:#D98E2B;
  --sand:#F6F1EA;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#2A272D;
  --muted:#6B6469;
  --radius-card:14px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --container:1200px;
  --sp-section:96px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brick);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brick-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--olive);outline-offset:2px;border-radius:4px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){:root{--container:1240px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,241,234,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -16px rgba(23,22,26,.5);
  background:rgba(255,255,255,.96);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.nav-group{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 0;
}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;gap:10px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--brick);background:rgba(166,23,43,.06);}
.nav-link.is-active{color:var(--brick);font-weight:600;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--brick);
  border-radius:2px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--ink);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.01em;
  padding:6px 4px;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  display:inline-grid;
  place-items:center;
  width:34px;height:34px;
  border-radius:9px;
  background:var(--brick);
  color:#fff;
  font-size:13px;
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:var(--shadow-1);
}
.brand-text{white-space:nowrap;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-dl{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  background:var(--brick);
  color:#fff;
  align-items:center;
  justify-content:center;
  font-size:18px;
  font-weight:700;
}
.mobile-dl:hover{color:#fff;background:var(--brick-dark);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,transform .16s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--brick);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--brick-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;color:var(--brick);border-color:transparent;}
.btn-ghost:hover{background:rgba(166,23,43,.08);color:var(--brick-dark);}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-light{background:#fff;color:var(--brick);}
.btn-light:hover{background:#F6F1EA;color:var(--brick-dark);transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:16px 28px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  background:#fff;
  color:var(--brick);
  border:1px solid rgba(166,23,43,.34);
  line-height:1.6;
}
.badge-solid{background:var(--brick);color:#fff;border-color:var(--brick);}
.badge-ink{background:var(--ink);color:#fff;border-color:var(--ink);}
.badge-sand{background:var(--sand);color:var(--text);border-color:var(--line);}
.badge-olive{background:rgba(46,94,78,.1);color:var(--olive);border-color:rgba(46,94,78,.32);}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.tag{
  display:inline-block;
  padding:3px 9px;
  border-radius:var(--radius-badge);
  background:var(--sand);
  border:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
  font-variant-numeric:tabular-nums;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"›";color:#B9B0A4;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--brick);}
.breadcrumb .current{color:var(--text);font-weight:600;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background-color:var(--ink);
  background-image:
    linear-gradient(180deg,rgba(23,22,26,.92),rgba(23,22,26,.84)),
    repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 8px,transparent 8px 16px),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
}
.page-hero-inner{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  padding:72px 0 76px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(30px,4vw,50px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.2;
  margin:18px 0 14px;
  max-width:16ch;
}
.page-hero-lead{
  color:rgba(255,255,255,.82);
  font-size:16.5px;
  line-height:1.9;
  max-width:720px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.16);
  font-size:13px;
  color:rgba(255,255,255,.72);
  font-variant-numeric:tabular-nums;
}
.hero-meta strong{color:#fff;font-weight:600;}
.page-hero .btn-row{margin-top:26px;}
.page-hero-media{
  position:relative;
  margin:0;
  border-radius:16px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 24px 60px -24px rgba(0,0,0,.7);
  background:#201F24;
  aspect-ratio:16/10;
}
.page-hero-media img{width:100%;height:100%;object-fit:cover;}
.page-hero-media figcaption{
  position:absolute;
  left:14px;bottom:12px;
  padding:4px 10px;
  border-radius:var(--radius-badge);
  background:rgba(23,22,26,.72);
  color:rgba(255,255,255,.86);
  font-size:12px;
  font-variant-numeric:tabular-nums;
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-section) 0;}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brick);
  text-transform:uppercase;
  margin-bottom:10px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brick);border-radius:2px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;}
.timeline::before{
  content:"";
  position:absolute;
  left:21px;
  top:14px;
  bottom:18px;
  width:2px;
  background:linear-gradient(180deg,rgba(46,94,78,.65),rgba(46,94,78,.12));
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 38px 76px;}
.tl-item:last-child{padding-bottom:0;}
.tl-node{
  position:absolute;
  left:0;top:0;
  width:44px;height:44px;
  border-radius:50%;
  background:var(--olive);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 6px rgba(46,94,78,.12);
}
.tl-body{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:24px 26px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.tl-body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DCD2C2;}
.tl-body h3{font-size:20px;font-weight:650;margin-bottom:10px;}
.tl-body p{color:var(--muted);font-size:15.5px;}
.tl-points{margin-top:14px;display:grid;gap:9px;}
.tl-points li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--text);
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;top:9px;
  width:7px;height:7px;
  background:var(--brick);
  border-radius:2px;
}

/* ---------- 网格与卡片 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:26px;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#DCD2C2;}
.card h3{font-size:19px;font-weight:650;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.card-icon{
  display:inline-grid;
  place-items:center;
  width:38px;height:38px;
  border-radius:10px;
  background:rgba(166,23,43,.09);
  color:var(--brick);
  font-weight:800;
  font-size:14px;
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.card-media{
  aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  background:#EFE8DD;
  margin-bottom:18px;
  border:1px solid var(--line);
}
.card-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 速查表 ---------- */
.quickref{
  display:grid;
  grid-template-columns:260px 1fr;
  gap:36px;
  align-items:start;
}
.quickref-stats{display:grid;gap:14px;}
.stat{
  background:var(--ink);
  color:#fff;
  border-radius:var(--radius-card);
  padding:20px 22px;
  box-shadow:var(--shadow-2);
}
.stat .num{
  display:block;
  font-size:30px;
  font-weight:800;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  color:#fff;
}
.stat .num span{font-size:15px;font-weight:600;color:rgba(255,255,255,.7);margin-left:4px;}
.stat .label{font-size:13px;color:rgba(255,255,255,.68);}
.chip-list{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border-radius:var(--radius-badge);
  background:#fff;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--text);
  box-shadow:var(--shadow-1);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.chip::before{
  content:"";
  width:7px;height:7px;
  border-radius:2px;
  background:var(--olive);
}
.chip:hover{border-color:var(--brick-light);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.quickref-note{
  margin-top:22px;
  padding:16px 20px;
  border-left:4px solid var(--olive);
  background:#fff;
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  font-size:14.5px;
  color:var(--muted);
  box-shadow:var(--shadow-1);
}

/* ---------- CTA ---------- */
.cta{
  position:relative;
  overflow:hidden;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(45deg,rgba(255,255,255,.08) 0 8px,transparent 8px 16px);
  color:#fff;
  padding:72px 0;
}
.cta-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr auto;
  gap:44px;
  align-items:center;
}
.cta h2{
  color:#fff;
  font-size:clamp(24px,2.8vw,34px);
  font-weight:800;
  margin-bottom:14px;
  max-width:20ch;
}
.cta p{color:rgba(255,255,255,.76);font-size:15.5px;max-width:640px;}
.cta-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;}
.qr{
  width:96px;height:96px;
  border-radius:12px;
  background:rgba(255,255,255,.94);
  display:grid;
  place-items:center;
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  text-align:center;
  line-height:1.4;
  padding:6px;
  border:1px solid rgba(255,255,255,.3);
}
.cta-meta{
  grid-column:1/-1;
  display:flex;
  flex-wrap:wrap;
  gap:10px 26px;
  margin-top:8px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.18);
  font-size:13px;
  color:rgba(255,255,255,.7);
  font-variant-numeric:tabular-nums;
}
.cta-meta strong{color:#fff;font-weight:600;}

/* ---------- 交叉链接 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cross-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.cross-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--brick-light);}
.cross-card h3{font-size:17px;font-weight:650;color:var(--ink);}
.cross-card p{font-size:14px;color:var(--muted);flex:1;}
.cross-card .more{
  font-size:14px;
  font-weight:600;
  color:var(--brick);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.cross-card .more::after{content:"→";transition:transform .18s ease;}
.cross-card:hover .more::after{transform:translateX(3px);}
.cross-card.is-current{
  border-color:var(--brick);
  background:linear-gradient(180deg,rgba(166,23,43,.05),rgba(166,23,43,0));
  cursor:default;
}
.cross-card.is-current:hover{transform:none;}
.cross-card.is-current .more{color:var(--muted);}
.cross-card.is-current .more::after{content:"";}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:18px;
  font-weight:800;
  margin-bottom:14px;
}
.footer-desc{color:rgba(255,255,255,.66);font-size:14px;line-height:1.9;max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:34px;height:34px;
  border-radius:9px;
  display:grid;
  place-items:center;
  background:rgba(255,255,255,.08);
  color:#fff;
  font-size:13px;
  font-weight:700;
  transition:background .18s ease,color .18s ease;
}
.footer-social a:hover{background:var(--brick);color:#fff;}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-dl{display:grid;gap:10px;}
.footer-dl a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 14px;
  border-radius:var(--radius-input);
  border:1px solid rgba(255,255,255,.2);
  color:#fff;
  font-size:14px;
  transition:background .18s ease,border-color .18s ease;
}
.footer-dl a span{font-size:12px;color:rgba(255,255,255,.6);font-variant-numeric:tabular-nums;}
.footer-dl a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px 24px;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero-inner{grid-template-columns:6fr 6fr;gap:36px;}
}
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;padding:56px 0 60px;}
  .page-hero h1{max-width:26ch;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .quickref{grid-template-columns:1fr;gap:26px;}
  .quickref-stats{grid-template-columns:repeat(3,1fr);display:grid;}
}
@media (max-width:900px){
  .header-inner{flex-wrap:wrap;min-height:64px;padding:8px 0;row-gap:0;}
  .nav-group{
    display:none;
    flex-basis:100%;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:10px 0 16px;
    order:4;
  }
  .site-header.is-open .nav-group{display:flex;}
  .nav-link{padding:12px 10px;font-size:16px;border-radius:10px;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:rgba(166,23,43,.08);}
  .nav-right .btn{width:100%;justify-content:center;margin-top:6px;}
  .brand{order:2;margin:0 auto;font-size:17px;}
  .nav-toggle{display:inline-flex;order:1;margin-left:0;}
  .mobile-dl{display:inline-flex;order:3;margin-left:0;}
}
@media (max-width:767px){
  :root{--sp-section:52px;}
  .container{padding:0 20px;}
  .section-head{margin-bottom:32px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .tl-item{padding-left:58px;padding-bottom:30px;}
  .tl-node{width:36px;height:36px;font-size:12px;box-shadow:0 0 0 5px rgba(46,94,78,.12);}
  .timeline::before{left:17px;}
  .tl-body{padding:20px;}
  .tl-body h3{font-size:18px;}
  .page-hero-media{aspect-ratio:16/10;}
  .quickref-stats{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .btn-row .btn{width:100%;}
  .cta{padding:56px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .qr{width:84px;height:84px;font-size:11px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .brand-text{font-size:16px;}
  .page-hero h1{font-size:28px;}
  .hero-meta{gap:8px 16px;}
  .cross-grid{grid-template-columns:1fr;}
}

/* roulang page: category4 */
:root{
  --brand:#A6172B;
  --brand-dark:#7E0F20;
  --brand-light:#C9464F;
  --ink:#17161A;
  --olive:#2E5E4E;
  --amber:#D98E2B;
  --sand:#F6F1EA;
  --card:#FFFFFF;
  --line:#E7DFD3;
  --text:#2A272D;
  --muted:#6B6469;
  --radius-card:14px;
  --radius-input:10px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 1px 2px rgba(23,22,26,.06);
  --shadow-2:0 10px 28px -14px rgba(23,22,26,.22);
  --sp-section:96px;
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-0.01em;}
h1{font-size:clamp(30px,4vw,50px);font-weight:800;line-height:1.2;}
h2{font-size:clamp(24px,2.4vw,31px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:650;line-height:1.45;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--olive);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){:root{--container:1240px;}}

/* ---------- 顶部细条 ---------- */
.topbar{
  background:var(--ink);
  color:#fff;
  font-size:13px;
  line-height:1;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:36px;
  padding:8px 24px;
  position:relative;
}
.topbar-inner .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--amber);
  display:inline-block;
  margin-right:8px;
  vertical-align:middle;
}
.topbar-close{
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  background:transparent;border:1px solid rgba(255,255,255,.32);
  color:#fff;width:24px;height:24px;border-radius:6px;
  cursor:pointer;font-size:12px;line-height:1;
  transition:background .2s ease,border-color .2s ease;
}
.topbar-close:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.6);}
.topbar.is-closed{display:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--card);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-stuck{
  border-bottom-color:var(--line);
  box-shadow:0 6px 20px -14px rgba(23,22,26,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:74px;
  position:relative;
}
.nav-group{
  display:flex;
  align-items:center;
  gap:6px;
  flex:1 1 0;
}
.nav-right{justify-content:flex-end;}
.nav-link{
  position:relative;
  padding:9px 12px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);background:#FBF7F2;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
     padding:2px 4px;
}
.brand-mark{
  width:38px;height:38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);
  color:#fff;
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
  border-radius:8px;
  box-shadow:var(--shadow-1);
}
.brand-text{
  font-size:19px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.brand:hover .brand-text{color:var(--brand);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{
  width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.nav-toggle:hover{border-color:var(--brand);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 移动抽屉 */
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(340px,88vw);
  height:100%;
  background:var(--card);
  border-left:1px solid var(--line);
  box-shadow:-18px 0 40px -24px rgba(23,22,26,.4);
  transform:translateX(102%);
  transition:transform .3s ease;
  z-index:80;
  padding:22px 22px 32px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
  margin-bottom:16px;
}
.drawer-title{font-size:15px;font-weight:700;color:var(--ink);}
.drawer-close{
  background:transparent;border:1px solid var(--line);border-radius:8px;
  width:34px;height:34px;cursor:pointer;color:var(--muted);font-size:15px;
  transition:border-color .2s ease,color .2s ease;
}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-links{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-links a{
  padding:12px 10px;
  border-radius:10px;
  font-size:15px;
  color:var(--text);
  border:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.drawer-links a:hover{background:#FBF7F2;border-color:var(--line);color:var(--brand);}
.drawer-links a.is-active{color:var(--brand);font-weight:600;background:#FBF7F2;border-color:var(--line);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(23,22,26,.48);
  opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-1);
}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-outline{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border-color:transparent;
}
.btn-ghost:hover{background:#F1E7DE;}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{
  opacity:.4;cursor:not-allowed;pointer-events:none;
}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  font-size:13px;
  line-height:1.3;
  border-radius:var(--radius-badge);
  border:1px solid var(--brand);
  color:var(--brand);
  background:#fff;
  white-space:nowrap;
}
.badge-soft{
  border-color:var(--line);
  background:#FBF7F2;
  color:var(--muted);
}
.badge-olive{
  border-color:rgba(46,94,78,.4);
  color:var(--olive);
  background:rgba(46,94,78,.07);
}
.badge-amber{
  border-color:rgba(217,142,43,.45);
  color:#9A6414;
  background:rgba(217,142,43,.12);
}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:20px 0 0;
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.crumb a{color:var(--muted);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;}
.crumb a:hover{color:var(--brand);border-bottom-color:var(--brand);}
.crumb .sep{opacity:.55;}
.crumb .current{color:var(--ink);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  margin-top:20px;
  border-radius:var(--radius-card);
  overflow:hidden;
  min-height:320px;
  display:flex;
  align-items:flex-end;
  border:1px solid var(--line);
  background:#17161A;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.5;
}
.page-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.07) 0 1px,transparent 1px 8px);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding:44px 40px;
  width:100%;
  background:linear-gradient(180deg,rgba(23,22,26,0) 0%,rgba(23,22,26,.82) 62%);
}
.page-hero .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.page-hero .badge-row .badge{
  background:rgba(255,255,255,.1);
  border-color:rgba(255,255,255,.34);
  color:#fff;
}
.page-hero h1{color:#fff;max-width:840px;}
.page-hero .lead{
  margin-top:14px;
  color:rgba(255,255,255,.86);
  max-width:720px;
  font-size:16px;
}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--brand);
  margin-bottom:10px;
}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--muted);max-width:720px;}

/* ---------- 快捷锚点条 ---------- */
.quicknav{
  margin-top:28px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
}
.quicknav a{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 18px;
  box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quicknav a:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D9CDBC;}
.quicknav .qn-label{display:block;font-size:15px;font-weight:650;color:var(--ink);}
.quicknav .qn-sub{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* ---------- FAQ 手风琴 ---------- */
.faq-group{margin-bottom:34px;}
.faq-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:700;color:var(--ink);
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:2px;
}
.faq-group-title .bar{width:4px;height:16px;background:var(--brand);border-radius:2px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:20px 2px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  margin-top:5px;
}
.faq-q .icon::before,
.faq-q .icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-q .icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-q .icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-q .icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s ease;
}
.faq-a-inner{
  padding:0 42px 22px 2px;
  color:var(--muted);
  font-size:15.5px;
}
.faq-a-inner strong{color:var(--ink);font-weight:650;}

/* ---------- 安全提示卡 ---------- */
.safety-panel{
  margin-top:56px;
  background:var(--ink);
  color:#fff;
  border-radius:var(--radius-card);
  padding:38px 36px;
  position:relative;
  overflow:hidden;
}
.safety-panel::after{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 8px);
  pointer-events:none;
}
.safety-panel h2{color:#fff;margin-bottom:10px;position:relative;z-index:2;}
.safety-panel > p{color:rgba(255,255,255,.8);max-width:720px;position:relative;z-index:2;}
.safety-grid{
  position:relative;z-index:2;
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.safety-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:12px;
  padding:20px;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.safety-card:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.3);transform:translateY(-2px);}
.safety-card h3{color:#fff;font-size:17px;margin-bottom:8px;}
.safety-card p{color:rgba(255,255,255,.76);font-size:14.5px;}
.safety-card .num{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  color:var(--amber);
  letter-spacing:.08em;
  margin-bottom:10px;
}

/* ---------- 自查清单 ---------- */
.check-list{
  margin-top:30px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  padding:8px 8px;
}
.check-item{
  display:flex;
  gap:14px;
  padding:18px 16px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease;
}
.check-item:last-child{border-bottom:0;}
.check-item:hover{background:#FBF7F2;}
.check-item .tick{
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:6px;
  background:rgba(46,94,78,.1);
  border:1px solid rgba(46,94,78,.4);
  color:var(--olive);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  margin-top:3px;
}
.check-item h3{font-size:16.5px;margin-bottom:4px;}
.check-item p{color:var(--muted);font-size:14.5px;}

/* ---------- 交叉链接卡 ---------- */
.cross-grid{
  margin-top:30px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.cross-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.cross-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.cross-card .thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  background:#EFE7DC;
}
.cross-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cross-card:hover .thumb img{transform:scale(1.04);}
.cross-card .body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.cross-card h3{font-size:17px;}
.cross-card p{color:var(--muted);font-size:14px;flex:1;}
.cross-card .go{
  font-size:14px;color:var(--brand);font-weight:650;
  display:inline-flex;align-items:center;gap:6px;
}
.cross-card .go .arrow{transition:transform .2s ease;}
.cross-card:hover .go .arrow{transform:translateX(4px);}
.cross-card.is-current{
  border-color:var(--brand);
  box-shadow:0 0 0 1px var(--brand),var(--shadow-2);
}

/* ---------- 下载 CTA ---------- */
.cta-section{padding:var(--sp-section) 0 0;}
.cta-panel{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  border-radius:var(--radius-card);
  padding:52px 44px;
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:36px;
  align-items:center;
}
.cta-panel::after{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.06) 0 1px,transparent 1px 8px);
  pointer-events:none;
}
.cta-content{position:relative;z-index:2;}
.cta-content h2{color:#fff;}
.cta-content .cta-sub{color:rgba(255,255,255,.78);margin-top:12px;max-width:560px;}
.cta-meta{
  margin-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;
}
.cta-meta .badge{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.28);
  color:rgba(255,255,255,.9);
}
.cta-right{position:relative;z-index:2;display:flex;flex-direction:column;align-items:flex-start;gap:18px;}
.cta-buttons{display:flex;flex-wrap:wrap;gap:12px;}
.cta-panel .btn-outline{color:#fff;border-color:rgba(255,255,255,.6);}
.cta-panel .btn-outline:hover{background:#fff;color:var(--ink);border-color:#fff;}
.qr-box{
  width:96px;height:96px;
  background:#fff;
  border-radius:10px;
  padding:8px;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  grid-template-rows:repeat(5,1fr);
  gap:3px;
}
.qr-box i{background:var(--ink);border-radius:1px;display:block;}
.qr-box i:nth-child(2n){background:transparent;}
.qr-box i:nth-child(7){background:var(--brand);}
.qr-wrap{display:flex;align-items:center;gap:14px;}
.qr-wrap span{font-size:13px;color:rgba(255,255,255,.72);max-width:120px;line-height:1.6;}
.cta-note{
  position:relative;z-index:2;
  grid-column:1 / -1;
  border-top:1px solid rgba(255,255,255,.16);
  padding-top:18px;
  margin-top:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.68);
  display:flex;flex-wrap:wrap;gap:8px 26px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sp-section);
  background:var(--ink);
  color:rgba(255,255,255,.78);
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.1fr;
  gap:32px;
}
.footer h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:800;color:#fff;
  margin-bottom:14px;
}
.footer-desc{font-size:14px;color:rgba(255,255,255,.66);max-width:340px;}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.25);
  border-radius:8px;
  font-size:13px;
  color:rgba(255,255,255,.8);
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.footer-social a:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-2px);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  width:fit-content;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-links a:hover{color:#fff;border-bottom-color:var(--brand);}
.footer-dl{display:flex;flex-direction:column;gap:10px;}
.footer-dl a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;
  font-size:14px;
  border:1px solid rgba(255,255,255,.2);
  border-radius:10px;
  color:rgba(255,255,255,.85);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-dl a span{font-size:12px;color:rgba(255,255,255,.55);}
.footer-dl a:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);transform:translateY(-1px);}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;}
.footer-bottom a:hover{color:#fff;border-bottom-color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .quicknav{grid-template-columns:repeat(2,1fr);}
  .cross-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  :root{--sp-section:64px;}
  .nav-group{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{justify-content:space-between;min-height:66px;}
  .brand{order:-1;}
  .page-hero{min-height:260px;}
  .page-hero-inner{padding:32px 26px;}
  .safety-grid{grid-template-columns:1fr 1fr;}
  .check-item{padding:16px 12px;}
  .cta-panel{grid-template-columns:1fr;padding:40px 30px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .safety-panel{padding:30px 26px;}
}
@media (max-width:767px){
  :root{--sp-section:48px;}
  .container{padding:0 20px;}
  .topbar-inner{justify-content:flex-start;padding-right:56px;}
  .topbar-close{right:18px;}
  .page-hero{min-height:200px;}
  .page-hero-inner{padding:24px 20px;}
  .page-hero .lead{font-size:15px;}
  .quicknav{grid-template-columns:1fr;gap:10px;}
  .faq-q{font-size:16px;padding:17px 0;}
  .faq-a-inner{padding:0 0 18px;}
  .safety-grid{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-buttons{width:100%;flex-direction:column;}
  .cta-buttons .btn{width:100%;}
  .cta-meta .badge{white-space:normal;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;}
  .brand-text{font-size:17px;}
}
@media (max-width:479px){
  .quicknav{grid-template-columns:1fr;}
  .cta-panel{padding:32px 20px;}
  .safety-panel{padding:26px 18px;}
}