/* roulang page: index */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --r-pill:999px;
  --r-btn:12px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  font-weight:400;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary);text-decoration:underline}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:.02em}
.site-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-container.site-container{width:100%}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 26px;border-radius:var(--r-pill);
  border:1.5px solid transparent;font-size:15px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;white-space:nowrap;transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0) translateY(1px);box-shadow:none}
.btn-primary{background:var(--c-accent);color:#0B1F19;box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(.94);box-shadow:var(--sh-2);color:#0B1F19}
.btn-dark{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn-dark:hover{filter:brightness(.92);box-shadow:var(--sh-2);color:#fff}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:rgba(15,74,58,.06);color:var(--c-primary)}
.btn-ghost{background:transparent;border-color:rgba(233,245,238,.45);color:var(--c-on-dark)}
.btn-ghost:hover{background:rgba(233,245,238,.10);border-color:var(--c-on-dark);color:var(--c-on-dark)}
.btn-lg{min-height:52px;padding:0 32px;font-size:16px}
.btn-sm{min-height:36px;padding:0 18px;font-size:13.5px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-primary)}
.link-arrow::after{content:"›";transition:transform .18s ease;font-size:17px;line-height:1}
.link-arrow:hover{text-decoration:none}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:12.5px;line-height:1.4;letter-spacing:.02em;font-weight:700}
.badge-accent{background:var(--c-accent);color:#0B1F19}
.badge-soft{background:rgba(15,74,58,.09);color:var(--c-primary);font-weight:600}
.badge-dot{background:rgba(15,74,58,.09);color:var(--c-primary);font-weight:600}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.badge-warn{background:rgba(255,122,69,.14);color:#B4431A;font-weight:600}
.badge-warn::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-warn)}

/* ---------- 顶部细条 ---------- */
.topbar{background:var(--c-primary-900);color:rgba(233,245,238,.78);font-size:13px;line-height:1.6}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px}
.topbar-left{display:flex;align-items:center;gap:8px}
.topbar-left::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--c-surface);border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease,padding .2s ease}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(11,31,25,.08)}
.header-inner{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px;transition:padding .2s ease}
.site-header.is-stuck .header-inner{padding-top:9px;padding-bottom:9px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary);display:flex;align-items:center;justify-content:center;position:relative;flex:0 0 auto}
.brand-mark i{width:16px;height:2.5px;background:var(--c-accent);border-radius:2px;position:relative;display:block}
.brand-mark i::before,.brand-mark i::after{content:"";position:absolute;left:0;width:16px;height:2.5px;background:var(--c-accent);border-radius:2px}
.brand-mark i::before{top:-6px;width:11px}
.brand-mark i::after{top:6px;width:13px}
.brand-text{font-size:16.5px;font-weight:800;color:var(--c-primary-900);letter-spacing:.01em;line-height:1.3}
.chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-muted);
  font-size:14px;font-weight:600;white-space:nowrap;text-decoration:none;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);text-decoration:none}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.chip.is-active:hover{color:#fff}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.link-plain{font-size:14px;font-weight:700;color:var(--c-primary);text-decoration:none;border-bottom:1.5px solid rgba(15,74,58,.25);padding-bottom:2px}
.link-plain:hover{text-decoration:none;border-bottom-color:var(--c-primary)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--c-primary-900);color:var(--c-on-dark)}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(120deg,rgba(11,31,25,.86) 0%,rgba(15,74,58,.72) 58%,rgba(11,31,25,.80) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.05) 0 2px,transparent 2px 22px);
  opacity:.9;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;padding-top:76px;padding-bottom:82px}
.hero-copy{max-width:620px}
.hero h1{font-size:32px;line-height:1.32;font-weight:800;margin:18px 0 0;color:#fff}
.hero-sub{font-size:17px;line-height:1.7;color:rgba(233,245,238,.86);margin-top:14px;font-weight:500}
.hero-desc{font-size:15.5px;line-height:1.85;color:rgba(233,245,238,.72);margin-top:14px;max-width:660px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;margin-top:34px;background:rgba(233,245,238,.16);border:1px solid rgba(233,245,238,.18);border-radius:var(--r-card);overflow:hidden}
.trust-bar li{background:rgba(11,31,25,.42);padding:14px 16px}
.trust-k{display:block;font-size:12.5px;color:rgba(233,245,238,.62);letter-spacing:.02em}
.trust-v{display:block;font-size:19px;font-weight:800;color:var(--c-on-dark);margin-top:2px}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:auto;border-radius:var(--r-card);box-shadow:0 28px 60px rgba(0,0,0,.42);transform:translateY(-6px)}
.hero-visual::before{content:"";position:absolute;inset:-18px -18px auto auto;width:120px;height:120px;background:var(--c-accent);opacity:.16;border-radius:50%;filter:blur(6px)}
.hero-note{margin-top:14px;font-size:13px;color:rgba(233,245,238,.6);text-align:center}

/* ---------- 板块 ---------- */
.section{padding-top:var(--sp-section);padding-bottom:var(--sp-section)}
.section-tight{padding-top:72px;padding-bottom:72px}
.section-alt{background:#EDF1E9;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-dark{background:var(--c-primary-900);color:var(--c-on-dark);position:relative;overflow:hidden}
.section-dark::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.045) 0 2px,transparent 2px 24px);pointer-events:none}
.section-dark .site-container{position:relative;z-index:2}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px}
.section-head h2{font-size:26px;line-height:1.35;font-weight:800;color:var(--c-primary-900);margin-top:12px}
.section-dark .section-head h2{color:#fff}
.section-lead{font-size:15.5px;color:var(--c-muted);margin-top:10px;max-width:720px}
.section-dark .section-lead{color:rgba(233,245,238,.72)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--c-primary);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);border-radius:2px}
.section-dark .eyebrow{color:var(--c-accent)}

/* ---------- 核心价值 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 28px;padding-bottom:24px}
.value-item{display:flex;gap:20px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px 26px 24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.value-item:nth-child(even){margin-top:24px}
.value-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.32)}
.value-num{font-size:30px;font-weight:800;color:rgba(15,74,58,.20);line-height:1;letter-spacing:.02em;font-variant-numeric:tabular-nums;flex:0 0 auto}
.value-body h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--c-primary-900)}
.value-body p{font-size:15px;line-height:1.75;color:var(--c-muted);margin-top:8px}
.value-body .badge{margin-top:14px}

/* ---------- 截图轮播 ---------- */
.carousel{position:relative}
.carousel-stage{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid rgba(233,245,238,.16);background:rgba(255,255,255,.04)}
.carousel-track{display:flex;transition:transform .28s ease}
.slide{flex:0 0 100%;margin:0;position:relative}
.slide img{width:100%;height:420px;object-fit:cover}
.slide-cap{position:absolute;left:0;right:0;bottom:0;padding:22px 26px;background:linear-gradient(to top,rgba(11,31,25,.92),rgba(11,31,25,0))}
.slide-cap h3{font-size:19px;font-weight:700;color:#fff}
.slide-cap p{font-size:14.5px;color:rgba(233,245,238,.78);margin-top:4px}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);
  width:46px;height:46px;border-radius:50%;
  border:1.5px solid rgba(233,245,238,.5);background:rgba(11,31,25,.55);color:var(--c-on-dark);
  display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;
  transition:all .18s ease;z-index:3;
}
.carousel-arrow:hover{background:var(--c-accent);color:#0B1F19;border-color:var(--c-accent)}
.carousel-arrow.prev{left:18px}
.carousel-arrow.next{right:18px}
.carousel-thumbs{display:flex;gap:10px;margin-top:18px}
.thumb{
  flex:1 1 0;min-width:0;display:flex;align-items:center;gap:10px;
  height:46px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(233,245,238,.22);background:rgba(255,255,255,.03);
  color:rgba(233,245,238,.72);font-size:13.5px;font-weight:600;text-align:left;
  transition:all .18s ease;
}
.thumb:hover{border-color:var(--c-on-dark);color:var(--c-on-dark)}
.thumb.is-active{background:var(--c-accent);border-color:var(--c-accent);color:#0B1F19}
.thumb-dash{width:14px;height:3px;border-radius:2px;background:currentColor;flex:0 0 auto;opacity:.7}
.carousel-dots{display:flex;gap:8px;margin-top:18px;justify-content:center}
.dot{width:18px;height:4px;border-radius:2px;background:rgba(233,245,238,.28);transition:all .2s ease}
.dot.is-active{width:40px;background:var(--c-accent)}

/* ---------- 内容卡片 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.28)}
.card-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#E7ECE3}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.03)}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.card-title{font-size:17.5px;line-height:1.5;font-weight:700;color:var(--c-primary-900);margin-top:12px}
.card-title a{color:inherit;text-decoration:none}
.card-title a:hover{color:var(--c-primary);text-decoration:underline}
.card-exc{font-size:15px;line-height:1.75;color:var(--c-muted);margin-top:10px;flex:1 1 auto}
.card-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted)}
.empty-state{
  grid-column:1/-1;min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:36px 24px;text-align:center;
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
}
.empty-icon{width:52px;height:52px;border-radius:50%;background:rgba(15,74,58,.10);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:22px}
.empty-state p{font-size:15px;color:var(--c-muted)}

/* ---------- 系统要求 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.spec-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:28px}
.spec-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.spec-head h3{font-size:19px;font-weight:700;color:var(--c-primary-900)}
.spec-list{margin-top:6px}
.spec-list dt{font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;margin-top:16px}
.spec-list dd{margin:2px 0 0;font-size:15px;color:var(--c-text);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.spec-note{margin-top:22px;padding:16px 18px;border-radius:var(--r-img);background:rgba(15,74,58,.06);border-left:3px solid var(--c-primary);font-size:14.5px;color:var(--c-muted);line-height:1.8}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.review-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.28)}
.review-card:nth-child(2n){margin-top:24px}
.review-top{display:flex;align-items:center;justify-content:space-between;gap:14px}
.review-user{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--c-primary);color:var(--c-on-dark);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto}
.review-name{font-size:15.5px;font-weight:700;color:var(--c-primary-900)}
.review-device{font-size:12.5px;color:var(--c-muted);letter-spacing:.02em}
.stars{color:var(--c-accent);font-size:14px;letter-spacing:.16em;line-height:1}
.review-text{font-size:15px;line-height:1.8;color:var(--c-muted);margin-top:16px}

/* ---------- 下载 CTA ---------- */
.download-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.download-copy h2{font-size:26px;line-height:1.35;font-weight:800;color:#fff}
.download-copy p{font-size:15.5px;color:rgba(233,245,238,.76);margin-top:12px;max-width:520px}
.download-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.download-side{display:flex;align-items:center;gap:22px;background:rgba(255,255,255,.05);border:1px solid rgba(233,245,238,.18);border-radius:var(--r-card);padding:24px}
.qr-box{width:118px;height:118px;border-radius:var(--r-img);background:rgba(233,245,238,.10);border:1px solid rgba(233,245,238,.28);display:flex;align-items:center;justify-content:center;color:rgba(233,245,238,.7);font-size:12.5px;text-align:center;line-height:1.5;flex:0 0 auto;padding:10px}
.download-side-info dt{font-size:12.5px;color:rgba(233,245,238,.6);margin-top:10px}
.download-side-info dd{margin:2px 0 0;font-size:15px;font-weight:700;color:var(--c-on-dark)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{margin:0}
.faq-q button{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;text-align:left;font-size:17px;font-weight:700;color:var(--c-primary-900);
  line-height:1.55;transition:color .18s ease;
}
.faq-q button:hover{color:var(--c-primary)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%);transition:transform .22s ease}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 60px 24px 4px;font-size:15px;line-height:1.8;color:var(--c-muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:var(--c-on-dark);border-top:1px solid rgba(233,245,238,.12)}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:38px;padding-top:64px;padding-bottom:44px}
.footer-brand .brand-text{color:var(--c-on-dark)}
.footer-brand .brand-mark{background:var(--c-accent)}
.footer-brand .brand-mark i,.footer-brand .brand-mark i::before,.footer-brand .brand-mark i::after{background:var(--c-primary-900)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(233,245,238,.66);margin-top:16px;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(233,245,238,.72);text-decoration:none}
.footer-col a:hover{color:var(--c-accent);text-decoration:none}
.footer-dl{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.footer-qr{width:96px;height:96px;border-radius:var(--r-img);background:rgba(233,245,238,.08);border:1px solid rgba(233,245,238,.24);display:flex;align-items:center;justify-content:center;font-size:12px;color:rgba(233,245,238,.62);text-align:center;line-height:1.5;padding:8px}
.footer-bottom{border-top:1px solid rgba(233,245,238,.12);padding-top:20px;padding-bottom:26px;display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(233,245,238,.6)}
.footer-bottom p{margin:0}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{color:rgba(233,245,238,.66);font-size:13px}
.footer-links a:hover{color:var(--c-accent);text-decoration:none}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all .24s ease;z-index:70;font-size:19px;line-height:1;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-accent);color:#0B1F19}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1279px){
  .hero-inner{gap:40px}
}
@media screen and (max-width:1023px){
  :root{--sp-section:72px}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding-top:56px;padding-bottom:60px}
  .hero-visual{max-width:520px}
  .hero-visual img{transform:none}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .download-panel{grid-template-columns:1fr;gap:30px}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;padding-top:52px}
  .slide img{height:360px}
  .carousel-thumbs{overflow-x:auto;padding-bottom:6px}
  .thumb{flex:0 0 auto;min-width:150px}
}
@media screen and (max-width:767px){
  :root{--sp-section:56px}
  .site-container{padding-left:20px;padding-right:20px}
  .chip-nav{order:3;flex:1 0 100%;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
  .chip-nav::-webkit-scrollbar{display:none}
  .chip{flex:0 0 auto}
  .header-inner{gap:12px}
  .brand-text{font-size:15px}
  .header-actions .link-plain{display:none}
  .hero h1{font-size:26px;line-height:1.36}
  .hero-sub{font-size:16px}
  .trust-bar{grid-template-columns:1fr}
  .value-grid{grid-template-columns:1fr;padding-bottom:0}
  .value-item:nth-child(even){margin-top:0}
  .spec-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .review-card:nth-child(2n){margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .section-head h2{font-size:22px}
  .download-actions .btn{width:100%}
  .download-side{flex-direction:column;align-items:flex-start;gap:18px}
  .faq-a p{padding-right:20px}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .slide img{height:260px}
  .slide-cap{padding:16px 18px}
  .carousel-arrow{width:40px;height:40px}
  .carousel-arrow.prev{left:10px}
  .carousel-arrow.next{right:10px}
  .to-top{right:16px;bottom:18px}
}
@media screen and (max-width:519px){
  .hero-cta .btn{width:100%}
  .slide img{height:220px}
  .card-body{padding:18px 16px 16px}
}

/* roulang page: article */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --r-pill:999px;
  --r-sub:12px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --gap-xl:96px;
  --gap-lg:72px;
  --gap-md:56px;
  --font-cn:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  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;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease;}
a:hover{color:#0b3a2d;}
p{margin:0 0 1.25em;}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--c-text);letter-spacing:.01em;}
h1{font-size:32px;line-height:1.25;}
h2{font-size:26px;line-height:1.3;}
h3{font-size:19px;line-height:1.45;font-weight:700;}
ul,ol{margin:0 0 1.25em;padding-left:1.4em;}
li{margin-bottom:.45em;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.chip:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.02em;}
.site-container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,padding .25s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 18px rgba(11,31,25,.07);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:76px;
  transition:min-height .25s ease;
}
.site-header.is-scrolled .header-inner{min-height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--c-primary) 0%,#166350 100%);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 10px rgba(15,74,58,.24);
}
.brand-mark i{
  display:block;width:14px;height:14px;border-radius:50%;
  border:3px solid var(--c-accent);border-right-color:transparent;transform:rotate(-35deg);
}
.brand-text{font-size:18px;font-weight:800;color:var(--c-primary-900);letter-spacing:.01em;white-space:nowrap;}
.chip-nav{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;overflow-y:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
  padding:6px 2px;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-muted);
  font-size:14px;font-weight:600;letter-spacing:.01em;
  white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{color:var(--c-primary);border-color:rgba(15,74,58,.45);}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.link-plain{font-size:14px;font-weight:600;color:var(--c-primary);}
.link-plain:hover{text-decoration:underline;text-underline-offset:4px;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 28px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.02em;
  border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#12331F;box-shadow:0 6px 16px rgba(198,240,74,.34);}
.btn-primary:hover{background:#b9e63c;color:#12331F;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-dark{background:var(--c-primary);color:#fff;}
.btn-dark:hover{background:#0c3c2f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-dark:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(15,74,58,.5);color:var(--c-primary);}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(15,74,58,.06);color:var(--c-primary);transform:translateY(-1px);}
.btn-ghost-light{background:transparent;border-color:rgba(233,245,238,.5);color:var(--c-on-dark);}
.btn-ghost-light:hover{border-color:var(--c-on-dark);background:rgba(233,245,238,.1);color:#fff;transform:translateY(-1px);}
.btn-sm{height:36px;padding:0 18px;font-size:13.5px;}
.btn-lg{height:52px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-primary);}
.link-arrow i{transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ Article hero ============ */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--c-primary-900);
  color:var(--c-on-dark);
  padding:44px 0 52px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.05) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,240,74,.18) 0%,transparent 68%);
  pointer-events:none;
}
.article-hero .site-container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(233,245,238,.68);
  margin-bottom:20px;
}
.breadcrumb a{color:rgba(233,245,238,.78);}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb .sep{color:rgba(233,245,238,.35);}
.breadcrumb .current{color:rgba(233,245,238,.95);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  color:#fff;
  font-size:34px;line-height:1.32;
  max-width:860px;
  margin-bottom:20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:rgba(233,245,238,.72);
}
.article-meta .dot{width:1px;height:12px;background:rgba(233,245,238,.3);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.badge-soft{background:rgba(198,240,74,.18);color:var(--c-accent);border:1px solid rgba(198,240,74,.35);}
.badge-line{background:rgba(255,255,255,.08);color:var(--c-on-dark);border:1px solid rgba(233,245,238,.24);}
.badge-status{background:rgba(198,240,74,.16);color:var(--c-accent);}
.badge-status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

/* ============ Layout ============ */
.article-wrap{padding:56px 0 var(--gap-md);}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;align-items:start;
}
.article-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:44px 46px 40px;
}
.article-body{max-width:760px;font-size:16px;line-height:1.85;}
.article-body p{margin:0 0 1.25em;color:#25302B;}
.article-body h2{
  position:relative;
  font-size:26px;line-height:1.35;
  margin:2em 0 .6em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:19px;line-height:1.45;margin:1.6em 0 .55em;}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.3em;}
.article-body li{margin-bottom:.5em;line-height:1.75;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body img{border-radius:var(--r-img);margin:1.4em 0;box-shadow:var(--sh-1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:12.5px;color:var(--c-muted);text-align:center;margin-top:10px;line-height:1.6;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;
  background:rgba(15,74,58,.06);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sub) var(--r-sub) 0;
  color:#26332C;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;
  display:block;overflow-x:auto;margin:1.6em 0;
  border:1px solid var(--c-line);border-radius:var(--r-sub);
}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--c-line);white-space:nowrap;}
.article-body thead th{background:rgba(15,74,58,.07);color:var(--c-primary);font-weight:700;}
.article-body tbody tr:nth-child(even){background:rgba(15,74,58,.04);}
.article-body code{
  background:rgba(15,74,58,.08);border-radius:6px;padding:2px 6px;font-size:14px;
}
.article-body a{border-bottom:1px solid rgba(15,74,58,.35);}
.article-body a:hover{border-bottom-color:var(--c-primary);}

.empty-state{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  text-align:center;
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
  padding:40px 24px;
  background:var(--c-surface);
}
.empty-icon{
  width:56px;height:56px;border-radius:50%;
  background:rgba(15,74,58,.08);
  display:flex;align-items:center;justify-content:center;
  color:rgba(15,74,58,.55);font-size:22px;
}
.empty-state p{margin:0;color:var(--c-muted);font-size:15px;}

.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:28px;border-top:1px solid var(--c-line);}
.tag-list .tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border-radius:var(--r-pill);
  background:rgba(15,74,58,.07);
  color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  transition:all .2s ease;
}
.tag-list .tag:hover{background:var(--c-primary);color:#fff;}

/* ============ Sidebar ============ */
.article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:24px;
}
.side-card h3{font-size:17px;margin-bottom:8px;}
.side-card p{font-size:14px;color:var(--c-muted);line-height:1.75;margin:0 0 18px;}
.side-card .side-meta{
  display:flex;gap:10px;flex-wrap:wrap;
  font-size:12.5px;color:var(--c-muted);margin-bottom:18px;
}
.side-card .side-meta span{
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-pill);
  padding:3px 10px;
}
.side-card-dark{background:var(--c-primary-900);border-color:var(--c-primary-900);color:var(--c-on-dark);}
.side-card-dark h3{color:#fff;}
.side-card-dark p{color:rgba(233,245,238,.7);}
.side-chips{display:flex;flex-wrap:wrap;gap:8px;}
.side-chips a{
  display:inline-flex;align-items:center;height:32px;padding:0 12px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-muted);font-size:13px;font-weight:600;
}
.side-chips a:hover{border-color:rgba(15,74,58,.45);color:var(--c-primary);}

/* ============ Post nav ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px;}
.post-nav a{
  display:block;padding:20px 22px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav a:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.25);}
.post-nav .pn-label{font-size:12.5px;color:var(--c-muted);letter-spacing:.02em;margin-bottom:8px;display:flex;align-items:center;gap:6px;}
.post-nav .pn-title{
  font-size:15.5px;font-weight:700;color:var(--c-text);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.post-nav .pn-next{text-align:right;}
.post-nav .pn-next .pn-label{justify-content:flex-end;}
.back-cate{
  display:flex;align-items:center;gap:8px;
  margin-top:24px;font-size:14px;font-weight:600;color:var(--c-primary);
}

/* ============ Sections ============ */
.section{padding:var(--gap-md) 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;
}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--c-muted);
  text-transform:uppercase;margin-bottom:10px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);border-radius:2px;}
.section-head h2{max-width:660px;}
.section-head p{color:var(--c-muted);font-size:15px;margin:10px 0 0;max-width:620px;}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.22);}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--c-bg);}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-media .badge{position:absolute;left:12px;top:12px;background:rgba(11,31,25,.78);color:var(--c-accent);backdrop-filter:blur(4px);}
.card-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1 1 auto;}
.card-body h3{font-size:17px;line-height:1.45;margin-bottom:10px;}
.card-body h3 a{color:var(--c-text);}
.card-body h3 a:hover{color:var(--c-primary);}
.card-body p{font-size:15px;line-height:1.75;color:var(--c-muted);margin:0 0 18px;}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--c-muted);
}

/* ============ CTA band ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-900);
  color:var(--c-on-dark);
  border-radius:0;
  padding:64px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.045) 0 2px,transparent 2px 18px);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.cta-inner h2{color:#fff;margin-bottom:14px;}
.cta-inner p{color:rgba(233,245,238,.74);font-size:15px;margin:0 0 26px;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-aside{
  display:flex;align-items:center;gap:24px;justify-content:flex-end;
}
.qr-box{
  width:132px;height:132px;border-radius:var(--r-card);
  background:rgba(233,245,238,.08);
  border:1px dashed rgba(233,245,238,.34);
  display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12.5px;line-height:1.6;color:rgba(233,245,238,.7);
  flex:0 0 auto;
}
.cta-note{font-size:13px;color:rgba(233,245,238,.62);}
.cta-note .num{color:var(--c-accent);font-weight:700;}

/* ============ Footer ============ */
.site-footer{background:var(--c-primary-900);color:var(--c-on-dark);margin-top:var(--gap-md);}
.footer-main{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 24px 44px;
  border-bottom:1px solid rgba(233,245,238,.14);
}
.footer-brand .brand-text{color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(233,245,238,.66);margin:18px 0 0;max-width:380px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(233,245,238,.68);}
.footer-col a:hover{color:var(--c-accent);}
.footer-dl{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.footer-qr{
  width:104px;height:104px;border-radius:var(--r-sub);
  background:rgba(233,245,238,.07);
  border:1px dashed rgba(233,245,238,.3);
  display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12.5px;line-height:1.6;color:rgba(233,245,238,.66);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:22px 24px 30px;
  font-size:13px;color:rgba(233,245,238,.6);
}
.footer-bottom p{margin:0;}
.footer-links{display:flex;gap:18px;}
.footer-links a{font-size:13px;color:rgba(233,245,238,.66);}
.footer-links a:hover{color:var(--c-accent);}

/* ============ To top ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:#0c3c2f;color:#fff;}

/* ============ Responsive ============ */
@media screen and (max-width:1199px){
  .site-container{padding:0 22px;}
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:32px;}
  .article-card{padding:36px 32px 32px;}
  .footer-main{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
  .footer-dl{grid-column:span 3;}
}
@media screen and (max-width:1023px){
  h1{font-size:28px;line-height:1.3;}
  .article-hero h1{font-size:28px;}
  .header-inner{flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px;min-height:0;}
  .chip-nav{order:3;width:100%;flex:1 1 100%;padding:2px 0 4px;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-inner{grid-template-columns:1fr;gap:28px;}
  .cta-aside{justify-content:flex-start;}
  .section{padding:48px 0;}
  .article-wrap{padding:40px 0 48px;}
}
@media screen and (max-width:767px){
  body{font-size:15.5px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:44px 20px 32px;}
  .footer-dl{grid-column:span 2;}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding:20px 20px 26px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav .pn-next{text-align:left;}
  .post-nav .pn-next .pn-label{justify-content:flex-start;}
  .cta-actions .btn{width:100%;}
}
@media screen and (max-width:519px){
  .site-container{padding:0 20px;}
  h1{font-size:26px;line-height:1.32;}
  .article-hero{padding:32px 0 38px;}
  .article-hero h1{font-size:24px;}
  .article-meta{gap:10px;}
  .article-card{padding:26px 20px 24px;border-radius:var(--r-card);}
  .card-grid{grid-template-columns:1fr;}
  .btn{height:48px;padding:0 22px;}
  .btn-sm{height:36px;}
  .footer-main{grid-template-columns:1fr;padding:36px 20px 26px;}
  .footer-dl{grid-column:span 1;}
  .to-top{right:16px;bottom:16px;}
  .cta-band{padding:48px 0;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --sp-1:96px;
  --sp-2:72px;
  --sp-3:56px;
  --font-sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img)}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:#0B6B52}
p{margin:0 0 1.25em}
h1,h2,h3,h4{margin:0;color:var(--c-text);line-height:1.35;font-weight:800}
h1{font-size:32px;line-height:1.28;letter-spacing:-.01em}
h2{font-size:26px;line-height:1.34}
h3{font-size:19px;line-height:1.45;font-weight:700}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
.num,.metric,.step-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.site-container{max-width:1200px;padding-left:20px;padding-right:20px;margin:0 auto}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(244,246,241,.94);
  backdrop-filter:saturate(140%) blur(10px);
  -webkit-backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 22px rgba(11,31,25,.08)}
.header-inner{display:flex;align-items:center;gap:16px;flex-wrap:wrap;min-height:72px;padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--c-text);flex:0 0 auto}
.brand:hover{color:var(--c-text)}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--c-primary);display:grid;place-items:center;flex:0 0 auto}
.brand-mark i{display:block;width:12px;height:12px;border-radius:3px;background:var(--c-accent);transform:rotate(45deg)}
.brand-text{font-size:16.5px;letter-spacing:-.005em;white-space:nowrap}
.chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:2px}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;height:38px;display:inline-flex;align-items:center;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-muted);font-size:14px;white-space:nowrap;
  transition:all .18s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.chip.is-active:hover{color:#fff}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;margin-left:auto}
.link-plain{font-size:14px;color:var(--c-primary);border-bottom:1px solid transparent;padding-bottom:2px}
.link-plain:hover{border-bottom-color:var(--c-primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1.5px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;
  padding:0 26px;min-height:44px;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn-lg{min-height:52px;font-size:16px;padding:0 32px}
.btn-sm{min-height:36px;font-size:14px;padding:0 18px}
.btn-primary{background:var(--c-accent);color:var(--c-primary-900);border-radius:var(--r-pill);box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--c-primary-900)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(15,74,58,.06);transform:translateY(-1px);color:var(--c-primary)}
.btn-ghost:active{transform:translateY(0)}
.btn-on-dark-primary{background:var(--c-accent);color:var(--c-primary-900);border-radius:var(--r-pill)}
.btn-on-dark-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--c-primary-900)}
.btn-on-dark-ghost{background:transparent;border-color:rgba(233,245,238,.5);color:var(--c-on-dark);border-radius:var(--r-pill)}
.btn-on-dark-ghost:hover{background:rgba(233,245,238,.10);border-color:var(--c-on-dark);transform:translateY(-1px);color:var(--c-on-dark)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:700;font-size:14.5px}
.btn-link i{transition:transform .18s ease}
.btn-link:hover i{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.02em;line-height:1.4;
  background:rgba(15,74,58,.08);color:var(--c-primary);font-weight:700;
}
.badge-status{background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-muted);font-weight:600}
.badge-status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block}
.badge-warn{background:rgba(255,122,69,.12);color:#B8491C}
.badge-dark{background:rgba(233,245,238,.14);color:var(--c-on-dark)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:var(--c-on-dark);
  background-image:linear-gradient(105deg,rgba(11,31,25,.94) 0%,rgba(15,74,58,.80) 58%,rgba(15,74,58,.66) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(198,240,74,.05) 0 2px,transparent 2px 16px);
}
.hero-inner{position:relative;z-index:2;padding:44px 0 64px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(233,245,238,.72);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{color:rgba(233,245,238,.82)}
.crumbs a:hover{color:var(--c-accent)}
.crumbs .sep{color:rgba(233,245,238,.42)}
.crumbs .current{color:var(--c-accent)}
.hero h1{color:#fff;max-width:760px}
.hero .hero-sub{margin:16px 0 0;max-width:660px;font-size:16px;line-height:1.8;color:rgba(233,245,238,.86)}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  margin-top:38px;max-width:640px;
}
.hero-stat{
  background:rgba(233,245,238,.08);border:1px solid rgba(233,245,238,.18);
  border-radius:var(--r-card);padding:14px 16px;
}
.hero-stat .k{display:block;font-size:12.5px;color:rgba(233,245,238,.68);letter-spacing:.02em}
.hero-stat .v{display:block;font-size:19px;font-weight:800;color:#fff;margin-top:2px}
.hero-stat .v em{font-style:normal;font-size:13px;font-weight:600;color:rgba(233,245,238,.7);margin-left:4px}

/* ============ 通用板块 ============ */
.section{padding:var(--sp-2) 0}
.section-alt{background:#EDF1E9}
.section-line{border-top:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:800;
  letter-spacing:.12em;color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:block}
.section-head p{margin-top:14px;color:var(--c-muted);font-size:15px;line-height:1.75}
.lead-text{max-width:760px;font-size:16px;line-height:1.85;color:var(--c-text)}
.lead-text strong{color:var(--c-primary);font-weight:700}

/* ============ 步骤时间轴 ============ */
.steps-wrap{position:relative}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;position:relative}
.steps::before{
  content:"";position:absolute;top:52px;left:4%;right:4%;height:2px;
  background:repeating-linear-gradient(90deg,var(--c-line) 0 10px,transparent 10px 18px);
  z-index:0;
}
.step{
  position:relative;z-index:1;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px 22px 26px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.24)}
.step-num{
  display:inline-block;font-size:26px;font-weight:800;color:var(--c-primary);
  border-bottom:3px solid var(--c-accent);padding-bottom:2px;margin-bottom:16px;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14.5px;line-height:1.75;color:var(--c-muted);margin:0}
.step .step-tip{display:block;margin-top:14px;font-size:12.5px;color:var(--c-primary);font-weight:700}
.steps-note{
  margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  padding:16px 20px;border:1px dashed var(--c-line);border-radius:var(--r-card);background:#fff;
  font-size:14px;color:var(--c-muted);
}
.steps-note i{color:var(--c-primary)}

/* ============ 下载深色区 ============ */
.dl-band{
  position:relative;overflow:hidden;background:var(--c-primary-900);color:var(--c-on-dark);
  padding:64px 0;
}
.dl-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(198,240,74,.045) 0 2px,transparent 2px 18px);
}
.dl-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.dl-band h2{color:#fff}
.dl-band p{color:rgba(233,245,238,.8);font-size:15px;margin:14px 0 0;max-width:520px}
.dl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.dl-panel{
  background:rgba(233,245,238,.06);border:1px solid rgba(233,245,238,.16);
  border-radius:var(--r-card);padding:26px;display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;
}
.dl-buttons{display:flex;flex-direction:column;gap:12px;min-width:210px}
.dl-buttons .btn{width:100%}
.qr-box{
  width:132px;height:132px;border-radius:var(--r-img);border:1px dashed rgba(233,245,238,.4);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  font-size:12.5px;color:rgba(233,245,238,.72);text-align:center;line-height:1.5;background:rgba(233,245,238,.04);
}
.qr-box i{font-size:26px;color:var(--c-accent)}

/* ============ 检查清单 / 定义列表 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.check-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.check-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.22)}
.check-card header{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.check-card header i{font-size:20px;color:var(--c-primary)}
.check-card h3{font-size:18px}
.def-list{margin:0}
.def-list div{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--c-line)}
.def-list div:last-child{border-bottom:0}
.def-list dt{color:var(--c-muted);font-size:14px;flex:0 0 auto}
.def-list dd{margin:0;font-size:14.5px;font-weight:700;color:var(--c-text);text-align:right}
.def-list dd .num{font-weight:700}

/* ============ 亮点卡（横向错落） ============ */
.point-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 28px}
.point{
  display:flex;gap:16px;align-items:flex-start;padding:22px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.point:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.22)}
.point .p-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(15,74,58,.08);color:var(--c-primary);font-size:17px;
}
.point h3{font-size:17px;margin-bottom:6px}
.point p{margin:0;font-size:14.5px;line-height:1.75;color:var(--c-muted)}

/* ============ 图文 ============ */
.media-row{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.media-row + .media-row{margin-top:56px}
.media-row.is-reverse .media-copy{order:2}
.media-row.is-reverse .media-figure{order:1}
.media-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-1);background:#fff}
.media-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .35s ease}
.media-figure:hover img{transform:scale(1.03)}
.media-copy h3{margin-bottom:12px}
.media-copy p{color:var(--c-muted);font-size:15px;line-height:1.8}
.tick-list{margin-top:16px;display:grid;gap:10px}
.tick-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--c-text)}
.tick-list li i{color:var(--c-primary);margin-top:6px;font-size:12px}

/* ============ FAQ ============ */
.faq{max-width:840px}
.faq-item{border-top:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;background:transparent;border:0;padding:22px 44px 22px 0;position:relative;
  text-align:left;font-size:17px;font-weight:700;color:var(--c-text);cursor:pointer;line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--c-primary)}
.faq-q::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-primary);transition:transform .24s ease;
}
.faq-item.is-open .faq-q::after{transform:translateY(-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 44px 24px 0;font-size:15px;line-height:1.8;color:var(--c-muted);margin:0}

/* ============ 分类互链 ============ */
.cat-links{padding:var(--sp-3) 0;border-top:1px solid var(--c-line)}
.cat-links h2{font-size:20px;margin-bottom:18px}
.cat-chip-row{display:flex;flex-wrap:wrap;gap:10px}
.cat-chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-text);font-size:14.5px;font-weight:600;transition:all .18s ease;
}
.cat-chip:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1)}
.cat-chip i{font-size:12px;color:var(--c-primary)}
.cat-chip.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.cat-chip.is-current i{color:var(--c-accent)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--c-primary);color:var(--c-on-dark);
  border-radius:24px;padding:44px 44px;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(198,240,74,.06) 0 2px,transparent 2px 18px);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(233,245,238,.85);margin:12px 0 0;font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-900);color:var(--c-on-dark);margin-top:var(--sp-2);padding-top:56px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;border-bottom:1px solid rgba(233,245,238,.14)}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-text{color:#fff}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(233,245,238,.68);margin:0;max-width:420px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:rgba(233,245,238,.72)}
.footer-col a:hover{color:var(--c-accent)}
.footer-dl{display:grid;gap:12px;justify-items:start}
.footer-qr{
  width:112px;height:112px;border-radius:var(--r-img);border:1px dashed rgba(233,245,238,.36);
  display:flex;align-items:center;justify-content:center;text-align:center;font-size:12.5px;
  line-height:1.5;color:rgba(233,245,238,.66);background:rgba(233,245,238,.04);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding-top:22px;padding-bottom:26px;font-size:13px;color:rgba(233,245,238,.6);
}
.footer-bottom p{margin:0}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{font-size:13px;color:rgba(233,245,238,.66)}
.footer-links a:hover{color:var(--c-accent)}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:24px;width:48px;height:48px;border-radius:50%;
  border:0;background:var(--c-primary);color:#fff;font-size:17px;cursor:pointer;
  display:grid;place-items:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,filter .18s ease;
  z-index:90;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.12)}
.to-top:active{transform:translateY(1px)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--sp-1:72px;--sp-2:60px;--sp-3:48px}
  h1{font-size:29px}
  .header-inner{min-height:66px}
  .chip-nav{order:3;flex-basis:100%;margin-top:2px}
  .header-actions{margin-left:auto}
  .hero-inner{padding:36px 0 52px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps::before{display:none}
  .dl-inner{grid-template-columns:1fr;gap:30px}
  .dl-panel{grid-template-columns:1fr;justify-items:start}
  .qr-box{width:118px;height:118px}
  .media-row{grid-template-columns:1fr;gap:24px}
  .media-row.is-reverse .media-copy{order:1}
  .media-row.is-reverse .media-figure{order:2}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-actions{justify-content:flex-start}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  h1{font-size:26px;line-height:1.34}
  h2{font-size:22px}
  h3{font-size:17.5px}
  .site-container{padding-left:20px;padding-right:20px}
  .brand-text{font-size:15px;white-space:normal;max-width:180px;line-height:1.3}
  .header-actions .link-plain{display:none}
  .hero-stats{grid-template-columns:1fr;gap:10px}
  .hero-stat{display:flex;align-items:center;justify-content:space-between;padding:12px 16px}
  .hero-stat .k{margin:0}
  .hero-stat .v{margin:0}
  .hero-cta .btn{width:100%}
  .check-grid{grid-template-columns:1fr}
  .point-list{grid-template-columns:1fr}
  .dl-buttons{min-width:0;width:100%}
  .dl-buttons .btn{min-height:48px}
  .faq-q{font-size:16px;padding-right:38px}
  .faq-a p{padding-right:0}
  .def-list div{flex-direction:column;gap:4px}
  .def-list dd{text-align:left}
  .cta-band{padding:28px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .to-top{right:14px;bottom:16px;width:44px;height:44px}
}
@media (max-width:519px){
  .steps{grid-template-columns:1fr}
  .step{padding:20px 18px}
  .section{padding:48px 0}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --r-pill:999px;
  --r-btn2:12px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --ff:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;}
p{margin-bottom:1.25em;}
p:last-child{margin-bottom:0;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-accent);
  outline-offset:2px;
  border-radius:6px;
}
::selection{background:var(--c-accent);color:var(--c-primary-900);}
.num{font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:.02em;font-variant-numeric:tabular-nums;}

/* Foundation 覆盖 */
.grid-container{max-width:100%;}
.site-container{max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
a.button,.button{background:transparent;color:inherit;}
ul.accordion{background:transparent;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(244,246,241,.94);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  padding-top:14px;
  padding-bottom:14px;
  transition:padding .25s ease;
}
.site-header.is-scrolled .header-inner{padding-top:9px;padding-bottom:9px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-primary);
  position:relative;display:inline-block;flex:0 0 auto;
}
.brand-mark i{
  position:absolute;left:50%;top:50%;
  width:15px;height:15px;margin:-7.5px 0 0 -7.5px;
  border-radius:4px;background:var(--c-accent);
  transform:rotate(45deg);
}
.brand-text{font-weight:800;font-size:16px;line-height:1.2;letter-spacing:.01em;color:var(--c-text);}
.chip-nav{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:4px 2px;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;align-items:center;
  height:38px;padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:var(--c-surface);
  color:var(--c-text);
  font-size:14px;line-height:1;white-space:nowrap;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);}
.chip.is-active{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;font-weight:600;
}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.link-plain{
  font-size:14px;color:var(--c-primary);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease;
  min-height:44px;display:inline-flex;align-items:center;
}
.link-plain:hover{border-bottom-color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:0 26px;
  height:52px;
  font-size:15.5px;font-weight:600;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease,filter .2s ease;
  text-align:center;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;font-weight:600;}
.btn-lg{height:56px;padding:0 32px;font-size:16px;}
.btn-primary{background:var(--c-accent);color:var(--c-primary-900);box-shadow:var(--sh-1);}
.btn-primary:hover{filter:brightness(.94);transform:translateY(-1px);box-shadow:var(--sh-2);color:var(--c-primary-900);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);filter:brightness(.9);}
.btn-solid{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-solid:hover{filter:brightness(1.14);transform:translateY(-1px);box-shadow:var(--sh-2);color:#fff;}
.btn-solid:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{
  background:transparent;
  border-color:rgba(15,74,58,.45);
  color:var(--c-primary);
  border-radius:var(--r-btn2);
}
.btn-ghost:hover{border-color:var(--c-primary);background:rgba(15,74,58,.06);transform:translateY(-1px);}
.btn-ghost-light{
  background:transparent;border-color:rgba(233,245,238,.5);color:var(--c-on-dark);
  border-radius:var(--r-btn2);
}
.btn-ghost-light:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-primary);font-weight:600;font-size:14.5px;
  padding:0;height:auto;border:0;background:transparent;
}
.btn-text i{transition:transform .2s ease;}
.btn-text:hover{color:var(--c-primary);text-decoration:underline;}
.btn-text:hover i{transform:translateX(4px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.02em;line-height:1;
  background:rgba(15,74,58,.09);color:var(--c-primary);font-weight:600;
}
.badge-dot::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:currentColor;margin-right:6px;display:inline-block;
}
.badge-solid{background:var(--c-primary);color:#fff;}
.badge-warn{background:rgba(255,122,69,.14);color:#B94A1C;}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:18px 0 0;
  font-size:13px;color:var(--c-muted);
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--c-muted);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#B7C1B8;}
.breadcrumb .current{color:var(--c-text);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;
  margin-top:16px;
  border-radius:var(--r-card);
  overflow:hidden;
  color:var(--c-on-dark);
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center 30%;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(102deg,rgba(11,31,25,.95) 0%,rgba(11,31,25,.86) 44%,rgba(15,74,58,.66) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.055) 0 2px,transparent 2px 15px);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:56px 44px 52px;max-width:820px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;font-weight:600;
  color:var(--c-accent);
  background:rgba(198,240,74,.12);
  border:1px solid rgba(198,240,74,.34);
  border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:20px;
}
.page-hero h1{
  font-size:32px;line-height:1.3;font-weight:800;
  letter-spacing:.01em;color:#fff;margin-bottom:.5em;
}
.page-hero h1 em{font-style:normal;color:var(--c-accent);}
.hero-lead{font-size:16px;line-height:1.9;color:rgba(233,245,238,.86);max-width:720px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px 28px;
  margin-top:26px;padding-top:22px;
  border-top:1px solid rgba(233,245,238,.16);
}
.hero-meta div{font-size:13.5px;color:rgba(233,245,238,.72);display:flex;align-items:center;gap:8px;}
.hero-meta strong{color:#fff;font-size:15px;font-weight:700;}

/* ============ 板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-line{border-top:1px solid var(--c-line);}
.section-dark{
  background:var(--c-primary-900);
  color:var(--c-on-dark);
  position:relative;
  overflow:hidden;
}
.section-dark::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.045) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.section-dark > *{position:relative;z-index:2;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-head h2{
  font-size:26px;line-height:1.34;font-weight:800;
  margin-bottom:.5em;position:relative;padding-left:18px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:2px;background:var(--c-accent);
}
.section-dark .section-head h2{color:#fff;}
.section-head p{color:var(--c-muted);font-size:15.5px;}
.section-dark .section-head p{color:rgba(233,245,238,.72);}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}

/* ============ 图文交错 ============ */
.feature-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:52px 0;
  border-top:1px solid var(--c-line);
}
.feature-row:first-of-type{border-top:0;padding-top:8px;}
.feature-row.is-reverse .feature-media{order:2;}
.feature-media{position:relative;}
.feature-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.feature-media:hover img{transform:scale(1.02) translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.35);}
.feature-index{
  position:absolute;left:-10px;top:-10px;
  width:52px;height:52px;border-radius:14px;
  background:var(--c-primary);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;
  box-shadow:var(--sh-2);
}
.feature-body h3{
  font-size:19px;line-height:1.5;font-weight:800;margin-bottom:.6em;
}
.feature-body h3 span{color:var(--c-primary);}
.feature-body > p{color:var(--c-muted);font-size:15px;line-height:1.8;}
.feature-list{list-style:none;margin-top:18px;display:grid;gap:10px;}
.feature-list li{
  position:relative;padding-left:20px;
  font-size:14.5px;color:var(--c-text);line-height:1.7;
}
.feature-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:8px;height:8px;border-radius:2px;
  background:var(--c-accent);
}
.feature-tagline{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:20px;font-size:13px;color:var(--c-muted);
}
.feature-tagline .num{color:var(--c-primary);font-weight:700;}

/* ============ 深色速览 ============ */
.rhythm-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;
}
.rhythm-item{
  border:1px solid rgba(233,245,238,.16);
  border-radius:var(--r-card);
  padding:28px 26px 26px;
  background:rgba(233,245,238,.04);
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.rhythm-item:hover{
  border-color:rgba(198,240,74,.45);
  background:rgba(233,245,238,.07);
  transform:translateY(-2px);
}
.rhythm-icon{
  width:42px;height:42px;border-radius:12px;
  background:rgba(198,240,74,.14);
  color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;margin-bottom:18px;
}
.rhythm-item h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:.55em;}
.rhythm-item p{font-size:14.5px;line-height:1.78;color:rgba(233,245,238,.72);}

/* ============ 速查定义列表 ============ */
.lookup-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;}
.lookup-item{
  display:grid;grid-template-columns:110px minmax(0,1fr);
  gap:18px;padding:20px 0;
  border-bottom:1px solid var(--c-line);
  align-items:baseline;
}
.lookup-item dt{
  font-weight:700;font-size:14.5px;color:var(--c-primary);
  letter-spacing:.01em;
}
.lookup-item dd{font-size:14.5px;color:var(--c-muted);line-height:1.78;}

/* ============ FAQ ============ */
.faq-wrap{max-width:840px;}
.accordion{border-top:1px solid var(--c-line);list-style:none;margin:0;}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;
  font-size:18px;line-height:1.55;font-weight:700;
  color:var(--c-text);background:transparent;border:0;
  transition:color .2s ease;
}
.accordion .accordion-title::before{display:none;content:none;}
.accordion .accordion-title:hover,
.accordion .accordion-title:focus{color:var(--c-primary);}
.acc-icon{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);
  transition:transform .24s ease,background .24s ease,border-color .24s ease;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--c-primary);border-radius:1px;
  transform:translate(-50%,-50%);
}
.acc-icon::before{width:11px;height:1.6px;}
.acc-icon::after{width:1.6px;height:11px;}
.accordion .accordion-title[aria-expanded="true"] .acc-icon{
  transform:rotate(45deg);
  background:var(--c-accent);
  border-color:var(--c-accent);
}
.accordion .accordion-content{
  padding:0 4px 26px;border:0;background:transparent;color:var(--c-muted);
  font-size:15px;line-height:1.8;
}
.accordion .accordion-content p{color:var(--c-muted);}

/* ============ 分类互链 ============ */
.link-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;}
.link-chip{
  display:inline-flex;align-items:center;gap:9px;
  height:46px;padding:0 20px;
  border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:var(--c-surface);font-size:14.5px;font-weight:600;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease;
}
.link-chip i{color:var(--c-primary);font-size:14px;transition:transform .2s ease;}
.link-chip:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--sh-1);}
.link-chip:hover i{transform:translateX(3px);}

/* ============ CTA 深色带 ============ */
.cta-band{
  background:var(--c-primary-900);
  color:var(--c-on-dark);
  border-radius:var(--r-card);
  padding:52px 48px;
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);
  gap:44px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,245,238,.05) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{font-size:26px;line-height:1.36;font-weight:800;color:#fff;margin-bottom:.55em;}
.cta-band p{font-size:15px;color:rgba(233,245,238,.76);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.cta-aside{display:flex;align-items:center;gap:20px;justify-content:flex-end;}
.qr-box{
  width:112px;height:112px;flex:0 0 auto;
  border-radius:var(--r-img);
  border:1px dashed rgba(233,245,238,.4);
  background:rgba(233,245,238,.06);
  display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12.5px;line-height:1.6;color:rgba(233,245,238,.7);
}
.cta-aside-info{font-size:13px;color:rgba(233,245,238,.66);line-height:1.8;}
.cta-aside-info strong{display:block;color:#fff;font-size:15px;margin-bottom:4px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-primary-900);
  color:var(--c-on-dark);
  margin-top:96px;
  padding-top:64px;
}
.footer-main{
  display:grid;
  grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:44px;
  padding-bottom:52px;
  border-top:1px solid rgba(233,245,238,.14);
  padding-top:52px;
}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-mark{background:rgba(233,245,238,.12);}
.footer-desc{
  margin-top:18px;font-size:14px;line-height:1.8;
  color:rgba(233,245,238,.66);max-width:420px;
}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;
}
.footer-col ul{list-style:none;display:grid;gap:12px;}
.footer-col ul li a{
  font-size:14px;color:rgba(233,245,238,.7);
  transition:color .2s ease,padding-left .2s ease;
  display:inline-block;
}
.footer-col ul li a:hover{color:var(--c-accent);padding-left:4px;}
.footer-dl{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
.footer-qr{
  width:96px;height:96px;border-radius:12px;
  border:1px dashed rgba(233,245,238,.36);
  background:rgba(233,245,238,.05);
  display:flex;align-items:center;justify-content:center;
  text-align:center;font-size:12px;line-height:1.55;color:rgba(233,245,238,.66);
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px 28px;
  align-items:center;justify-content:space-between;
  padding-top:24px;padding-bottom:32px;
  border-top:1px solid rgba(233,245,238,.14);
  font-size:13px;color:rgba(233,245,238,.56);
}
.footer-links{display:flex;gap:22px;flex-wrap:wrap;}
.footer-links a{color:rgba(233,245,238,.62);transition:color .2s ease;}
.footer-links a:hover{color:var(--c-accent);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:#fff;
  border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,visibility .25s ease,transform .25s ease,background .25s ease;
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:#0C3B2E;transform:translateY(-2px);}

/* ============ 响应式 ============ */
@media screen and (max-width:1279px){
  .site-container{max-width:1160px;}
  .feature-row{gap:44px;}
}

@media screen and (max-width:1023px){
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .header-inner{flex-wrap:wrap;gap:14px;row-gap:10px;}
  .chip-nav{order:3;flex:1 1 100%;}
  .header-actions{margin-left:auto;}
  .hero-inner{padding:46px 32px 44px;}
  .page-hero h1{font-size:28px;}
  .feature-row{grid-template-columns:minmax(0,1fr);gap:28px;padding:42px 0;}
  .feature-row.is-reverse .feature-media{order:0;}
  .rhythm-grid{grid-template-columns:minmax(0,1fr);gap:18px;}
  .lookup-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:42px 32px;gap:32px;}
  .cta-aside{justify-content:flex-start;}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .site-footer{margin-top:72px;}
}

@media screen and (max-width:767px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:23px;padding-left:14px;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
  .brand-text{font-size:15px;}
  .link-plain{display:none;}
  .hero-inner{padding:38px 22px 36px;}
  .page-hero h1{font-size:26px;line-height:1.34;}
  .hero-lead{font-size:15px;}
  .hero-meta{gap:10px 22px;}
  .feature-media img{aspect-ratio:16/10;}
  .feature-index{width:44px;height:44px;left:-8px;top:-8px;font-size:15px;}
  .lookup-item{grid-template-columns:minmax(0,1fr);gap:6px;}
  .accordion .accordion-title{font-size:16.5px;padding:20px 2px;}
  .accordion .accordion-content{padding:0 2px 22px;}
  .cta-band{padding:34px 22px;border-radius:14px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;height:50px;}
  .btn-lg{height:50px;}
  .footer-main{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:44px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:18px;}
}

@media screen and (max-width:519px){
  .site-container{padding-left:16px;padding-right:16px;}
  .header-actions .btn-sm{padding:0 14px;height:36px;font-size:13.5px;}
  .hero-meta div{font-size:13px;}
  .feature-list li{font-size:14px;}
  .link-chip{width:100%;justify-content:space-between;}
  .qr-box{width:92px;height:92px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --r-card:16px;
  --r-media:14px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --font-cn:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-text);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;font-weight:400;
  letter-spacing:0;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--c-primary);text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:800;line-height:1.35;letter-spacing:-.01em}
h1{font-size:32px;line-height:1.28}
h2{font-size:26px;line-height:1.34}
h3{font-size:19px;line-height:1.5;font-weight:700}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
.num,.metric-value,.req-val,.hero-stat b{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.grid-container.site-container{max-width:1200px;padding-left:24px;padding-right:24px}
@media (min-width:1280px){.grid-container.site-container{max-width:1280px}}
.section{padding:72px 0}
.section-tight{padding:56px 0}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-dark{background:var(--c-primary-900);color:var(--c-on-dark)}
.section-dark h2,.section-dark h3{color:var(--c-on-dark)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head p{color:var(--c-muted);font-size:16px;margin-top:12px;margin-bottom:0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(15,74,58,.08);color:var(--c-primary);font-size:12.5px;letter-spacing:.04em;font-weight:700;margin-bottom:14px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(244,246,241,.94);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.header-top{background:var(--c-primary-900);color:var(--c-on-dark);font-size:12.5px;letter-spacing:.02em}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;padding-top:6px;padding-bottom:6px}
.top-note{display:inline-flex;align-items:center;gap:8px}
.top-note .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 3px rgba(198,240,74,.18)}
.top-meta{color:rgba(233,245,238,.72)}
.header-inner{display:flex;align-items:center;gap:18px;padding-top:12px;padding-bottom:12px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--c-primary);display:grid;place-items:center;position:relative;overflow:hidden}
.brand-mark::after{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(115deg,rgba(198,240,74,.16) 0 2px,transparent 2px 9px)}
.brand-mark i{width:13px;height:13px;border-radius:50%;background:var(--c-accent);display:block;position:relative;z-index:2}
.brand-text{font-size:16px;font-weight:800;color:var(--c-text);letter-spacing:-.01em;white-space:nowrap}
.chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;padding:4px 2px;
  scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch}
.chip-nav::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);font-size:14px;font-weight:600;
  white-space:nowrap;transition:all .2s ease;text-decoration:none}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);text-decoration:none;transform:translateY(-1px)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto}
.link-plain{font-size:14px;font-weight:600;color:var(--c-primary);text-decoration:none;border-bottom:1px solid rgba(15,74,58,.3);padding-bottom:1px}
.link-plain:hover{text-decoration:none;border-bottom-color:var(--c-primary)}

/* ---------- buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 24px;
  border-radius:var(--r-pill);border:1.5px solid transparent;font-size:15px;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-decoration:none;transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background-color .18s ease,border-color .18s ease}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-primary{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-primary-900)}
.btn-primary:hover{filter:brightness(.94)}
.btn-outline{background:transparent;border-color:rgba(15,74,58,.3);color:var(--c-primary)}
.btn-outline:hover{background:rgba(15,74,58,.06);border-color:var(--c-primary)}
.btn-solid{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-solid:hover{filter:brightness(1.08)}
.btn-on-dark{background:transparent;border-color:rgba(233,245,238,.4);color:var(--c-on-dark)}
.btn-on-dark:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn-sm{min-height:36px;padding:0 18px;font-size:13.5px}
.btn-lg{min-height:52px;padding:0 30px;font-size:16px}
.btn-block{width:100%}
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(15,74,58,.08);color:var(--c-primary);font-size:12.5px;letter-spacing:.02em;font-weight:600}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge-warn{background:rgba(255,122,69,.14);color:#C2471A}
.badge-ok{background:rgba(198,240,74,.28);color:#2A5B18}
.badge-on-dark{background:rgba(233,245,238,.14);color:var(--c-on-dark)}

/* ---------- crumbs ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);padding:18px 0}
.crumb a{color:var(--c-muted);text-decoration:none}
.crumb a:hover{color:var(--c-primary);text-decoration:underline}
.crumb .sep{color:#B7C1B6}
.crumb .now{color:var(--c-text)}

/* ---------- hero ---------- */
.cat-hero{position:relative;overflow:hidden;color:var(--c-on-dark);
  background-image:linear-gradient(96deg,rgba(11,31,25,.93) 0%,rgba(15,74,58,.76) 62%,rgba(15,74,58,.62) 100%),
  url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center}
.cat-hero::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(198,240,74,.055) 0 2px,transparent 2px 28px)}
.cat-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center;
  padding-top:56px;padding-bottom:56px}
.cat-hero h1{color:#fff;max-width:620px}
.cat-hero .lede{margin-top:16px;color:rgba(233,245,238,.86);font-size:16px;line-height:1.85;max-width:640px}
.cat-hero .lede strong{color:var(--c-accent);font-weight:700}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;padding-top:22px;border-top:1px solid rgba(233,245,238,.18)}
.hero-stat{font-size:13px;color:rgba(233,245,238,.7)}
.hero-stat b{display:block;font-size:20px;font-weight:800;color:#fff;line-height:1.4}
.hero-figure{margin:0;position:relative}
.hero-figure img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-media);
  border:1px solid rgba(233,245,238,.18);box-shadow:var(--sh-3);transform:translateY(-6px)}
.hero-figure figcaption{font-size:12.5px;color:rgba(233,245,238,.66);margin-top:12px;text-align:center}

/* ---------- metric bar ---------- */
.metric-wrap{margin-top:-38px;position:relative;z-index:5}
.metric-bar{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-2);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));overflow:hidden}
.metric{padding:24px 24px;border-right:1px solid var(--c-line);min-height:118px;display:flex;flex-direction:column;justify-content:center}
.metric:last-child{border-right:0}
.metric-value{font-size:28px;font-weight:800;color:var(--c-primary);line-height:1.25}
.metric-value small{font-size:14px;font-weight:700;margin-left:2px}
.metric-label{margin-top:6px;font-size:14px;font-weight:700;color:var(--c-text)}
.metric-note{font-size:12.5px;line-height:1.6;color:var(--c-muted);margin-top:2px}

/* ---------- device grid ---------- */
.device-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.device-card{display:flex;gap:18px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.device-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,74,58,.28)}
.device-thumb{width:104px;height:104px;flex:0 0 auto;border-radius:var(--r-media);object-fit:cover}
.device-body{min-width:0}
.device-body h3{font-size:17px}
.device-meta{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 10px}
.device-body p{font-size:15px;line-height:1.75;color:var(--c-muted);margin:0}
.device-body .spec{margin-top:10px;font-size:13px;color:var(--c-muted)}
.device-body .spec b{color:var(--c-text);font-weight:700}

/* ---------- requirements ---------- */
.req-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.req-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:4px 26px 22px}
.req-panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:20px 0 16px;border-bottom:1px solid var(--c-line)}
.req-panel-head h3{font-size:18px}
.req-list{display:grid;grid-template-columns:120px minmax(0,1fr)}
.req-list dt{padding:14px 0;border-top:1px solid var(--c-line);font-size:14px;color:var(--c-muted)}
.req-list dd{padding:14px 0;border-top:1px solid var(--c-line);font-size:15px;color:var(--c-text);
  display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.req-list dt:first-of-type,.req-list dt:first-of-type + dd{border-top:0}
.req-val{font-weight:700}
.req-hint{margin-top:18px;font-size:13px;color:var(--c-muted);display:flex;gap:8px;align-items:flex-start}
.req-hint::before{content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--c-warn)}

/* ---------- compat check ---------- */
.compat-split{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.compat-figure{margin:0}
.compat-figure img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-media);
  border:1px solid var(--c-line);box-shadow:var(--sh-2)}
.compat-list{counter-reset:cmp}
.compat-list li{position:relative;padding:20px 0 20px 54px;border-top:1px solid var(--c-line)}
.compat-list li:first-child{border-top:0;padding-top:4px}
.compat-list li::before{counter-increment:cmp;content:"0" counter(cmp);position:absolute;left:0;top:20px;
  font-size:15px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.compat-list li:first-child::before{top:4px}
.compat-list h3{font-size:16.5px;margin-bottom:6px}
.compat-list p{font-size:15px;color:var(--c-muted);margin:0}

/* ---------- faq ---------- */
.accordion.faq-list{background:transparent;border:0;margin:0;max-width:900px}
.accordion.faq-list .accordion-item{border-top:1px solid var(--c-line);background:transparent}
.accordion.faq-list .accordion-item:first-child{border-top:1px solid var(--c-line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;min-height:64px;
  padding:18px 4px;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--c-text);line-height:1.6;transition:color .18s ease}
.faq-q:hover{color:var(--c-primary)}
.faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1.5px solid rgba(15,74,58,.3);position:relative;transition:transform .24s ease,border-color .24s ease,background-color .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);transform:translate(-50%,-50%)}
.faq-icon::before{width:11px;height:1.5px}
.faq-icon::after{width:1.5px;height:11px}
.accordion-item.is-open .faq-icon{transform:rotate(45deg);background:var(--c-accent);border-color:var(--c-accent)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .24s ease}
.acc-panel-inner{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--c-muted);max-width:760px}
.acc-panel-inner strong{color:var(--c-text)}

/* ---------- link chips + cta ---------- */
.cat-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cat-link{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);font-size:14px;font-weight:600;text-decoration:none;transition:all .2s ease}
.cat-link:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);text-decoration:none}
.cat-link.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.cta-band{position:relative;overflow:hidden;background:var(--c-primary-900);color:var(--c-on-dark);padding:64px 0}
.cta-band::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(198,240,74,.05) 0 2px,transparent 2px 30px)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cta-inner h2{color:#fff}
.cta-inner p{color:rgba(233,245,238,.8);margin-top:12px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.qr-box{display:flex;align-items:center;gap:16px;margin-top:24px;padding:16px;border:1px dashed rgba(233,245,238,.3);border-radius:var(--r-card)}
.qr-img{width:76px;height:76px;border-radius:10px;background:rgba(233,245,238,.1);display:grid;place-items:center;
  font-size:12px;line-height:1.4;color:rgba(233,245,238,.72);text-align:center;flex:0 0 auto}
.qr-text{font-size:13px;color:rgba(233,245,238,.72);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--c-primary-900);color:var(--c-on-dark);padding-top:64px}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px}
.site-footer .brand-text{color:#fff}
.site-footer .brand-mark{background:rgba(233,245,238,.12)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(233,245,238,.7);margin-top:16px;max-width:360px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(233,245,238,.72);text-decoration:none}
.footer-col ul li a:hover{color:var(--c-accent);text-decoration:none}
.footer-dl{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.footer-qr{width:88px;height:88px;border-radius:12px;border:1px dashed rgba(233,245,238,.3);
  display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.4;color:rgba(233,245,238,.7)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px 24px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(233,245,238,.14);padding-top:22px;padding-bottom:28px;font-size:13px;color:rgba(233,245,238,.6)}
.footer-bottom p{margin:0}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{color:rgba(233,245,238,.72);font-size:13px;text-decoration:none}
.footer-links a:hover{color:var(--c-accent);text-decoration:none}

/* ---------- to top ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;border:0;
  background:var(--c-primary);color:#fff;display:grid;place-items:center;cursor:pointer;z-index:90;
  opacity:0;visibility:hidden;transform:translateY(8px);box-shadow:var(--sh-2);transition:all .25s ease}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.12)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  h1{font-size:28px;line-height:1.3}
  h2{font-size:23px}
  .section{padding:56px 0}
  .header-inner{flex-wrap:wrap}
  .chip-nav{order:3;flex:1 0 100%;padding-bottom:6px}
  .header-actions{margin-left:auto}
  .cat-hero-inner{grid-template-columns:1fr;gap:30px;padding-top:44px;padding-bottom:44px}
  .hero-figure img{transform:none;aspect-ratio:16/9}
  .metric-wrap{margin-top:-28px}
  .metric-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric{border-bottom:1px solid var(--c-line);min-height:104px}
  .metric:nth-child(2n){border-right:0}
  .metric:nth-child(3),.metric:nth-child(4){border-bottom:0}
  .compat-split{grid-template-columns:1fr;gap:30px}
  .req-columns{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .device-grid{grid-template-columns:1fr}
}
@media (max-width:639px){
  .grid-container.site-container{padding-left:20px;padding-right:20px}
  h1{font-size:26px;line-height:1.34}
  h2{font-size:21px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .header-top-inner{flex-direction:column;align-items:flex-start;gap:2px;padding-top:8px;padding-bottom:8px}
  .brand-text{font-size:14.5px;white-space:normal}
  .header-actions .link-plain{display:none}
  .chip{height:36px;font-size:13.5px;padding:0 14px}
  .cat-hero-inner{padding-top:36px;padding-bottom:36px}
  .hero-cta .btn{flex:1 1 100%}
  .hero-stats{gap:18px}
  .metric-bar{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric:last-child{border-bottom:0}
  .device-card{flex-direction:column;gap:14px}
  .device-thumb{width:100%;height:auto;aspect-ratio:16/9}
  .req-panel{padding:4px 18px 18px}
  .req-list{grid-template-columns:100px minmax(0,1fr)}
  .req-list dt,.req-list dd{font-size:14px}
  .faq-q{font-size:15.5px}
  .compat-list li{padding-left:44px}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions .btn{flex:1 1 100%}
  .to-top{right:16px;bottom:16px;width:44px;height:44px}
}

/* roulang page: category4 */
:root{
  --c-primary:#0F4A3A;
  --c-primary-900:#0B1F19;
  --c-accent:#C6F04A;
  --c-warn:#FF7A45;
  --c-bg:#F4F6F1;
  --c-surface:#FFFFFF;
  --c-line:#E1E6DC;
  --c-text:#1B211E;
  --c-muted:#63706A;
  --c-on-dark:#E9F5EE;
  --c-primary-10:rgba(15,74,58,.10);
  --c-primary-20:rgba(15,74,58,.20);
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,31,25,.06);
  --sh-2:0 12px 28px rgba(11,31,25,.10);
  --sh-3:0 20px 48px rgba(11,31,25,.14);
  --sp-lg:96px;
  --sp-md:72px;
  --sp-sm:56px;
  --font-cn:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--r-img);}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--c-primary);text-decoration:underline;}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:0;}
h1{font-size:32px;line-height:1.28;font-weight:800;}
h2{font-size:26px;line-height:1.32;font-weight:800;}
h3{font-size:19px;line-height:1.45;font-weight:700;}
h4{font-size:16px;line-height:1.5;font-weight:700;}
p{margin:0 0 1.25em;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1,"lnum" 1;letter-spacing:.02em;}

.grid-container.site-container{max-width:1200px;padding-left:20px;padding-right:20px;}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,246,241,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s ease,border-color .24s ease,padding .24s ease;
}
.site-header.is-stuck{border-bottom:1px solid var(--c-line);box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;
}
.site-header.is-stuck .header-inner{min-height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.brand-mark i{
  display:block;width:14px;height:14px;border-radius:4px;
  background:var(--c-accent);
  transform:rotate(45deg);
}
.brand-text{
  font-size:17px;font-weight:800;color:var(--c-text);letter-spacing:.01em;
  max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.chip-nav{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
  padding:6px 0;
}
.chip-nav::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;
  height:38px;line-height:36px;padding:0 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-muted);
  font-size:14px;font-weight:500;
  white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);text-decoration:none;}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.link-plain{font-size:14px;color:var(--c-primary);font-weight:600;}
.link-plain:hover{text-decoration:underline;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,filter .18s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-primary{background:var(--c-accent);color:var(--c-primary-900);border-radius:var(--r-pill);}
.btn-primary:hover{filter:brightness(.94);color:var(--c-primary-900);}
.btn-dark{background:var(--c-primary);color:#fff;}
.btn-dark:hover{filter:brightness(.94);color:#fff;}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-10);color:var(--c-primary);}
.btn-light{background:transparent;border-color:rgba(233,245,238,.42);color:var(--c-on-dark);}
.btn-light:hover{border-color:var(--c-accent);color:var(--c-accent);}
.btn-sm{height:36px;padding:0 18px;font-size:13.5px;}
.btn-lg{height:52px;padding:0 30px;font-size:16px;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;}
.crumb{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);text-decoration:none;}
.crumb .sep{color:rgba(99,112,106,.5);}
.crumb .cur{color:var(--c-text);font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-tight{padding:56px 0;}
.section-alt{background:#EDF1E9;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:780px;margin-bottom:36px;}
.section-head h2{
  padding-left:16px;border-left:4px solid var(--c-primary);
  margin-bottom:12px;
}
.section-head p{color:var(--c-muted);font-size:15px;margin:0;}
.eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.06em;font-weight:700;
  color:var(--c-primary);background:rgba(15,74,58,.08);
  border-radius:var(--r-pill);padding:5px 12px;margin-bottom:14px;
}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;border-radius:0 0 24px 24px;
  background-image:linear-gradient(rgba(11,31,25,.72),rgba(11,31,25,.78)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:var(--c-on-dark);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(198,240,74,.05) 0 2px,transparent 2px 26px);
}
.page-hero .hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.35fr .9fr;gap:48px;align-items:center;
  padding:64px 0 60px;
}
.page-hero h1{color:#fff;font-size:32px;line-height:1.3;margin-bottom:16px;}
.page-hero h1 .hl{color:var(--c-accent);}
.page-hero .lead{font-size:16px;color:rgba(233,245,238,.86);max-width:640px;margin:0 0 22px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag-dark{
  font-size:12.5px;letter-spacing:.02em;color:var(--c-on-dark);
  border:1px solid rgba(233,245,238,.30);border-radius:var(--r-pill);
  padding:5px 12px;background:rgba(255,255,255,.04);
}
.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(233,245,238,.22);
  border-radius:var(--r-card);
  padding:22px;
  backdrop-filter:blur(2px);
}
.hero-panel h3{color:#fff;font-size:16px;margin-bottom:14px;}
.hero-panel ul li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:rgba(233,245,238,.86);
  padding:9px 0;border-top:1px solid rgba(233,245,238,.14);
}
.hero-panel ul li:first-child{border-top:0;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);margin-top:8px;flex:0 0 auto;}

/* ---------- 导语 ---------- */
.intro-block{padding:56px 0 8px;}
.intro-block .inner{max-width:780px;}
.intro-block p{font-size:16px;line-height:1.85;color:var(--c-text);}
.intro-block p.muted{color:var(--c-muted);font-size:15px;}

/* ---------- FAQ 双栏 ---------- */
.faq-layout{display:grid;grid-template-columns:280px 1fr;gap:44px;align-items:start;}
.faq-toc{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 18px;box-shadow:var(--sh-1);
}
.faq-toc h4{font-size:13px;color:var(--c-muted);letter-spacing:.04em;margin-bottom:12px;}
.faq-toc ol{counter-reset:toc;}
.faq-toc li{counter-increment:toc;border-top:1px solid var(--c-line);}
.faq-toc li:first-child{border-top:0;}
.faq-toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:10px 2px;font-size:14px;color:var(--c-text);line-height:1.6;
}
.faq-toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-size:12px;color:var(--c-muted);flex:0 0 auto;
  font-variant-numeric:tabular-nums;
}
.faq-toc a:hover,.faq-toc a.is-current{color:var(--c-primary);text-decoration:none;}
.faq-toc a.is-current{font-weight:700;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:box-shadow .22s ease,border-color .22s ease;
  scroll-margin-top:100px;
}
.faq-item:hover{box-shadow:var(--sh-2);border-color:var(--c-primary-20);}
.faq-item.is-open{border-color:var(--c-primary-20);box-shadow:var(--sh-2);}
.faq-q{margin:0;}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;padding:20px 22px;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;color:var(--c-text);line-height:1.5;
}
.faq-btn:hover{color:var(--c-primary);}
.faq-ico{
  position:relative;flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1.5px solid var(--c-primary-20);
  transition:transform .24s ease,background-color .24s ease,border-color .24s ease;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);
  transform:translate(-50%,-50%);
}
.faq-ico::before{width:11px;height:1.6px;}
.faq-ico::after{width:1.6px;height:11px;}
.faq-item.is-open .faq-ico{transform:rotate(135deg);background:var(--c-accent);border-color:var(--c-accent);}
.faq-item.is-open .faq-ico::before,.faq-item.is-open .faq-ico::after{background:var(--c-primary-900);}
.faq-a{padding:0 22px 22px;border-top:1px solid var(--c-line);}
.faq-a p{margin:14px 0 0;font-size:15px;line-height:1.8;color:var(--c-muted);}
.faq-a p strong{color:var(--c-text);}
.faq-a ul{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.faq-a ul li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.75;color:var(--c-muted);
}
.faq-a ul li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--c-accent);transform:rotate(45deg);
}
.warn-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;color:#8C3413;
  background:rgba(255,122,69,.14);border-radius:var(--r-pill);padding:3px 10px;margin-right:6px;
}
.warn-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-warn);}

/* ---------- 安全板块 ---------- */
.safety-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:center;}
.safety-grid img{border-radius:var(--r-card);box-shadow:var(--sh-2);aspect-ratio:4/3;object-fit:cover;width:100%;}
.safety-list{display:flex;flex-direction:column;gap:18px;}
.safety-item{
  display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.safety-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-20);}
.safety-num{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;background:rgba(15,74,58,.08);
  color:var(--c-primary);font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.safety-item h3{font-size:16px;margin-bottom:6px;}
.safety-item p{margin:0;font-size:14.5px;color:var(--c-muted);line-height:1.75;}

/* ---------- 反馈表单 ---------- */
.resolve-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:34px;display:grid;grid-template-columns:.95fr 1.05fr;gap:40px;
}
.resolve-card h2{padding-left:0;font-size:24px;margin-bottom:12px;}
.resolve-card .rc-lead{font-size:15px;color:var(--c-muted);margin-bottom:18px;}
.rc-points li{display:flex;gap:10px;font-size:14.5px;color:var(--c-muted);padding:7px 0;}
.rc-points li .dot{margin-top:9px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--c-text);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:var(--r-input);
  background:#FBFCF9;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 3px rgba(15,74,58,.10);
}
.field.has-error input,.field.has-error textarea{border-color:var(--c-warn);background:rgba(255,122,69,.05);}
.field .err{display:none;font-size:12.5px;color:#B6441C;margin-top:6px;line-height:1.5;}
.field.has-error .err{display:block;}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.form-note{font-size:12.5px;color:var(--c-muted);margin:0;max-width:320px;line-height:1.6;}
.form-alert{
  display:none;margin-top:18px;padding:12px 16px;border-radius:var(--r-input);
  background:rgba(198,240,74,.22);border:1px solid rgba(15,74,58,.18);
  color:var(--c-primary);font-size:14px;font-weight:600;
}
.form-alert.is-visible{display:block;}

/* ---------- 分类互链 chip ---------- */
.cross-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
.cross-links a{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:14px;color:var(--c-text);
  transition:all .2s ease;
}
.cross-links a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1);text-decoration:none;}
.cross-links a.is-now{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}
.cross-links a.is-now:hover{color:#fff;}

/* ---------- 下载 CTA ---------- */
.download-cta{
  position:relative;overflow:hidden;border-radius:24px;
  background-image:linear-gradient(rgba(11,31,25,.86),rgba(11,31,25,.9)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  color:var(--c-on-dark);padding:52px;
}
.download-cta::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(198,240,74,.05) 0 2px,transparent 2px 24px);
}
.dl-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;}
.download-cta h2{color:#fff;padding-left:0;font-size:26px;margin-bottom:12px;}
.download-cta p{margin:0;color:rgba(233,245,238,.82);font-size:15px;}
.dl-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch;}
.dl-btns{display:flex;flex-wrap:wrap;gap:12px;}
.qr-box{
  display:flex;gap:16px;align-items:center;
  border:1px dashed rgba(233,245,238,.35);border-radius:var(--r-card);
  padding:14px 18px;
}
.qr-ph{
  width:86px;height:86px;flex:0 0 auto;border-radius:10px;
  background:rgba(233,245,238,.10);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(233,245,238,.7);text-align:center;line-height:1.5;
  border:1px solid rgba(233,245,238,.24);
}
.qr-text{font-size:13.5px;color:rgba(233,245,238,.78);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:var(--c-on-dark);margin-top:96px;}
.footer-main{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-top:64px;padding-bottom:48px;
  border-top:1px solid rgba(233,245,238,.14);
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-mark{background:rgba(233,245,238,.12);}
.footer-desc{font-size:13.5px;color:rgba(233,245,238,.66);line-height:1.85;margin:16px 0 0;max-width:380px;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13.5px;color:rgba(233,245,238,.72);}
.footer-col ul li a:hover{color:var(--c-accent);text-decoration:none;}
.footer-dl{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.footer-qr{
  width:92px;height:92px;border-radius:12px;
  border:1px dashed rgba(233,245,238,.34);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:rgba(233,245,238,.62);text-align:center;line-height:1.5;
}
.footer-bottom{
  border-top:1px solid rgba(233,245,238,.14);
  padding-top:22px;padding-bottom:28px;
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
}
.footer-bottom p{font-size:12.5px;color:rgba(233,245,238,.55);margin:0;}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-links a{font-size:12.5px;color:rgba(233,245,238,.62);}
.footer-links a:hover{color:var(--c-accent);text-decoration:none;}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:80;
  width:46px;height:46px;border-radius:50%;
  background:var(--c-primary);color:#fff;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,filter .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{filter:brightness(1.12);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .header-inner{flex-wrap:wrap;gap:12px;padding:12px 0;}
  .chip-nav{order:3;width:100%;padding-bottom:2px;}
  .header-actions{margin-left:auto;}
  .brand-text{max-width:170px;font-size:15.5px;}
  .page-hero .hero-inner{grid-template-columns:1fr;gap:32px;padding:48px 0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-toc{position:static;}
  .safety-grid{grid-template-columns:1fr;gap:28px;}
  .resolve-card{grid-template-columns:1fr;gap:28px;padding:26px;}
  .dl-inner{grid-template-columns:1fr;gap:28px;}
  .download-cta{padding:36px 28px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
}
@media screen and (max-width:639px){
  body{font-size:15.5px;}
  h1{font-size:26px;line-height:1.34;}
  h2{font-size:22px;}
  .page-hero h1{font-size:26px;}
  .site-container{padding-left:20px;padding-right:20px;}
  .header-actions .link-plain{display:none;}
  .faq-btn{font-size:15.5px;padding:16px 16px;}
  .faq-a{padding:0 16px 18px;}
  .footer-main{grid-template-columns:1fr;gap:28px;padding-top:48px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cross-links a{width:100%;justify-content:space-between;}
  .dl-btns .btn{width:100%;}
  .form-foot{flex-direction:column;align-items:stretch;}
  .form-foot .btn{width:100%;}
  .to-top{right:16px;bottom:18px;}
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .page-hero{border-radius:0 0 18px 18px;}
}