/* roulang page: index */
:root{
  --ink:#0C3B34;
  --ink-2:#14574C;
  --accent:#F05A28;
  --accent-dark:#D9481B;
  --jade:#1F9E8A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --line:#E2DCD0;
  --text:#1B2421;
  --muted:#626C67;
  --d-text:#F2F6F4;
  --d-muted:#A9C0B9;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 2px 10px rgba(12,59,52,.06);
  --sh-hover:0 12px 28px rgba(12,59,52,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --tr:.22s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--jade);text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
input,textarea{outline:none}
:focus-visible{outline:3px solid rgba(31,158,138,.45);outline-offset:2px}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{max-width:720px}
.grid-container{max-width:1200px;width:100%;padding-left:24px;padding-right:24px}
.grid-x{display:flex;flex-wrap:wrap}
.sec{padding:88px 0}
.sec-bg{background:var(--bg)}
.sec-surface{background:var(--surface)}
.sec-surface2{background:var(--surface-2)}
.sec-dark{background:var(--ink);color:var(--d-text)}
.sec-head{max-width:820px;margin-bottom:28px}
.sec-head h2{margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:15.5px;line-height:1.85}
.sec-dark .sec-head p{color:var(--d-muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--jade);text-transform:none;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--accent)}
.sec-dark .eyebrow{color:#7FD8C8}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;text-decoration:none;
  transition:var(--tr);white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-hover)}
.btn-primary:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover,.btn-outline:focus{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover,.btn-ghost:focus{background:#fff;color:var(--ink);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--ink)}
.btn-white:hover,.btn-white:focus{background:var(--surface-2);transform:translateY(-2px);box-shadow:var(--sh-hover)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;transform:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--jade);border-bottom:1px solid rgba(31,158,138,.4);padding-bottom:2px;transition:var(--tr)}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent)}
.link-more::after{content:"→";transition:var(--tr)}
.link-more:hover::after{transform:translateX(3px)}

.label-tag{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(31,158,138,.12);color:#12695C;
}
.label-tag.orange{background:rgba(240,90,40,.12);color:#B23C13}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:0 2px 10px rgba(12,59,52,.08)}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;gap:20px;
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;gap:3px;flex:0 0 auto;
}
.logo-mark i{display:block;width:3px;border-radius:2px;background:var(--accent)}
.logo-mark i:nth-child(1){height:10px}
.logo-mark i:nth-child(2){height:16px;background:#F7F5F0}
.logo-mark i:nth-child(3){height:12px}
.logo-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.2}
.logo-text small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em}
.nav-main{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center}
.nav-main a{
  position:relative;display:block;padding:22px 14px;
  font-size:15px;font-weight:500;color:var(--text);text-decoration:none;
  transition:var(--tr);
}
.nav-main a:hover{color:var(--ink-2)}
.nav-main a.is-active{color:var(--ink);font-weight:600}
.nav-main a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  height:40px;padding:0 14px;border-radius:var(--r-btn);
  background:transparent;border:1.5px solid var(--line);
  font-size:14.5px;font-weight:600;color:var(--ink);transition:var(--tr);
}
.mega-trigger:hover{border-color:var(--ink);background:var(--surface-2)}
.mega-trigger .caret{width:8px;height:8px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(45deg) translateY(-2px);transition:var(--tr)}
.mega-wrap.is-open .mega-trigger .caret{transform:rotate(-135deg) translateY(-2px)}
.mega-panel{
  position:absolute;right:-120px;top:calc(100% + 14px);
  width:820px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:0 18px 44px rgba(12,59,52,.16);
  padding:28px;
  display:grid;grid-template-columns:1fr 1fr 1.05fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.mega-wrap:hover .mega-panel,.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:14px}
.mega-list li+li{margin-top:8px}
.mega-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14.5px;color:var(--text);
  transition:var(--tr);
}
.mega-list a:hover{background:var(--surface-2);color:var(--ink);transform:translateX(3px)}
.mega-list .dot{width:7px;height:7px;border-radius:2px;background:var(--jade);flex:0 0 auto}
.mega-post{display:block;padding:10px;border-radius:10px;transition:var(--tr)}
.mega-post:hover{background:var(--surface-2)}
.mega-post strong{display:block;font-size:14.5px;font-weight:600;color:var(--text);line-height:1.6;margin-bottom:4px}
.mega-post:hover strong{color:var(--ink-2)}
.mega-post span{font-size:12.5px;color:var(--muted)}
.mega-cta{
  background:var(--ink);border-radius:14px;padding:18px;color:var(--d-text);
  display:flex;flex-direction:column;gap:12px;
}
.mega-cta img{width:100%;height:104px;object-fit:cover;border-radius:10px;border:1px solid rgba(255,255,255,.14)}
.mega-cta p{font-size:13.5px;line-height:1.75;color:var(--d-muted);max-width:none}
.nav-toggle{display:none;width:42px;height:42px;border:1.5px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:var(--tr)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;inset:68px 0 0;background:#fff;z-index:55;
  padding:20px 24px 40px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.m-link{display:block;padding:15px 2px;font-size:16px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line)}
.mobile-drawer a.m-link:hover{color:var(--accent)}
.mobile-group{margin-top:18px}
.mobile-group h5{font-size:12.5px;font-weight:700;color:var(--muted);letter-spacing:.06em;margin-bottom:8px}
.mobile-group a{display:block;padding:11px 2px;font-size:15px;color:var(--text);border-bottom:1px dashed var(--line)}
.mobile-drawer .btn{margin-top:22px}

/* ============ Hero ============ */
.hero{
  position:relative;background:var(--ink);color:var(--d-text);
  padding:96px 0;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);
  opacity:.6;pointer-events:none;
}
.hero .grid-container{position:relative;z-index:2}
.hero-grid{align-items:center}
.hero h1{color:#fff;margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--d-muted);max-width:560px;margin-bottom:20px}
.hero-points{margin-bottom:30px}
.hero-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--d-text);padding:5px 0}
.hero-points li::before{
  content:"";width:8px;height:8px;border-radius:2px;background:var(--jade);flex:0 0 auto;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:12px}
.hero-note{font-size:13px;color:var(--d-muted)}
.hero-visual{position:relative;padding:10px 0 30px 30px}
.hero-visual .hero-img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:20px;border:1px solid rgba(255,255,255,.14);
}
.hero-device{
  position:absolute;left:0;bottom:0;width:270px;
  background:#fff;border-radius:14px;padding:16px 16px 14px;
  box-shadow:0 18px 44px rgba(0,0,0,.3);color:var(--text);
}
.hero-device::before{content:"";position:absolute;top:0;left:16px;right:16px;height:4px;border-radius:0 0 4px 4px;background:var(--accent)}
.hero-device strong{display:block;font-size:14.5px;font-weight:700;color:var(--ink);margin-bottom:8px}
.hero-device dl{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:13px}
.hero-device dt{color:var(--muted)}
.hero-device dd{color:var(--text);text-align:right;font-weight:600}

/* ============ 价值区 ============ */
.value-grid{align-items:center}
.value-media img{
  width:100%;aspect-ratio:3/4.2;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh);
}
.value-list{margin-top:8px}
.value-item{
  display:flex;gap:18px;padding:22px 0;
  border-bottom:1px dashed var(--line);
}
.value-item:first-child{padding-top:0}
.value-item:last-child{border-bottom:0;padding-bottom:0}
.value-num{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);
  font-size:15px;font-weight:700;color:var(--accent);
  transition:var(--tr);
}
.value-item:hover .value-num{background:var(--accent);color:#fff;border-color:var(--accent)}
.value-item h3{margin-bottom:4px;font-size:18px}
.value-item p{font-size:14.5px;color:var(--muted);line-height:1.8;max-width:560px}

/* ============ 轮播 ============ */
.snap-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px}
.snap-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;margin:0 -4px;
  scrollbar-width:thin;
}
.snap-track::-webkit-scrollbar{height:6px}
.snap-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.snap-card{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh);transition:var(--tr);
}
.snap-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.snap-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);margin-bottom:14px}
.snap-card h3{font-size:16px;margin-bottom:6px}
.snap-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.snap-nav{display:flex;align-items:center;gap:14px;margin-top:6px}
.snap-arrow{
  width:40px;height:40px;border-radius:50%;
  border:1.5px solid var(--ink);background:transparent;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;transition:var(--tr);
}
.snap-arrow:hover{background:var(--ink);color:#fff}
.snap-dots{display:flex;gap:8px;margin-left:auto}
.snap-dot{width:9px;height:9px;border-radius:50%;border:1px solid var(--ink);background:transparent;padding:0;transition:var(--tr)}
.snap-dot.is-active{background:var(--accent);border-color:var(--accent);width:24px;border-radius:999px}

/* ============ 系统要求 ============ */
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;height:100%;position:relative;transition:var(--tr);
}
.spec-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.spec-card .badge{
  position:absolute;top:24px;right:24px;
  padding:3px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:var(--ink);color:#fff;
}
.spec-card h3{margin-bottom:6px;padding-right:90px}
.spec-card .spec-lead{font-size:14px;color:var(--muted);margin-bottom:18px}
.spec-card dl{display:grid;grid-template-columns:auto 1fr;gap:0 20px}
.spec-card dt{font-weight:600;color:var(--ink);font-size:14.5px;padding:10px 0;border-top:1px solid var(--line)}
.spec-card dd{color:var(--muted);font-size:14.5px;padding:10px 0;border-top:1px solid var(--line);text-align:right}
.spec-card dt:first-of-type,.spec-card dd:first-of-type{border-top:0}

/* ============ 评价墙 ============ */
.reviews-wrap{align-items:flex-start}
.reviews-col--offset{padding-top:44px}
.quote{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh);margin-bottom:24px;transition:var(--tr);
}
.quote:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.quote .mark{font-size:40px;line-height:1;color:var(--accent);font-weight:700;display:block;margin-bottom:8px}
.quote p{font-size:15px;color:var(--text);line-height:1.85;margin-bottom:18px;max-width:none}
.quote-user{display:flex;align-items:center;gap:12px}
.quote-user img{width:42px;height:42px;border-radius:50%;object-fit:cover}
.quote-user strong{display:block;font-size:14.5px;color:var(--ink)}
.quote-user span{font-size:12.5px;color:var(--muted)}
.quote.tall{padding-bottom:34px}
.quote.short{padding:20px 24px}

/* ============ 下载区 ============ */
.download{background:var(--ink);color:var(--d-text);padding:64px 0}
.download .grid-x{align-items:center}
.download h2{color:#fff;margin-bottom:10px}
.download p{color:var(--d-muted);font-size:15px;max-width:460px}
.dl-buttons{display:flex;gap:16px;flex-wrap:wrap;justify-content:flex-end}
.dl-item{display:flex;flex-direction:column;gap:8px;min-width:132px}
.dl-item .btn{width:100%}
.dl-item span{font-size:12.5px;color:var(--d-muted);text-align:center}
.qr-box{
  width:160px;height:160px;background:#fff;border-radius:var(--r-img);
  padding:12px;display:flex;flex-direction:column;align-items:center;gap:6px;
  margin-left:auto;
}
.qr-box img{width:100%;height:104px;object-fit:cover;border-radius:8px}
.qr-box span{font-size:11.5px;color:var(--muted);line-height:1.4;text-align:center}

/* ============ 资讯列表 ============ */
.news-lead{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
  transition:var(--tr);height:100%;text-decoration:none;
}
.news-lead:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.news-lead img{width:100%;aspect-ratio:16/9;object-fit:cover}
.news-lead .news-body{padding:22px}
.news-lead h3{font-size:20px;margin:12px 0 10px;color:var(--text);transition:var(--tr)}
.news-lead:hover h3{color:var(--ink-2)}
.news-lead .news-sum{font-size:14.5px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:14px}
.news-meta i{width:1px;height:12px;background:var(--line);display:inline-block}
.news-mini{
  display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:12px;text-decoration:none;transition:var(--tr);height:100%;
}
.news-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#D6CFC0}
.news-mini img{width:96px;height:96px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.news-mini .mini-body{min-width:0}
.news-mini h3{font-size:15px;line-height:1.6;margin:6px 0 4px;color:var(--text);transition:var(--tr);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini:hover h3{color:var(--ink-2)}
.news-mini .mini-sum{font-size:13px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-mini .news-meta{margin-top:6px;font-size:12.5px}
.empty-box{
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 28px;text-align:center;
}
.empty-box .empty-icon{
  width:52px;height:52px;border-radius:14px;background:rgba(31,158,138,.12);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
  color:var(--jade);font-size:22px;font-weight:700;
}
.empty-box h3{margin-bottom:8px}
.empty-box p{font-size:14.5px;color:var(--muted);margin:0 auto 20px}
.empty-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq-list{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 48px 22px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:var(--tr);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:12px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--accent);transition:transform var(--tr);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item summary:hover{color:var(--accent)}
.faq-body{
  padding:0 32px 24px 16px;font-size:15px;line-height:1.85;color:var(--muted);
  border-left:3px solid var(--jade);margin-left:0;
}
.faq-body p{max-width:760px}

/* ============ 页前 CTA ============ */
.mini-cta{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 32px;box-shadow:var(--sh);
}
.mini-cta h2{font-size:22px;margin-bottom:4px}
.mini-cta p{font-size:14.5px;color:var(--muted);max-width:520px}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:var(--d-muted);padding:72px 0 0}
.footer-grid{display:flex;flex-wrap:wrap;gap:32px}
.footer-brand{flex:1 1 280px}
.footer-col{flex:1 1 180px}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:var(--d-muted)}
.site-footer p{font-size:14px;line-height:1.85;color:var(--d-muted);max-width:340px;margin-top:16px}
.site-footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links li+li{margin-top:9px}
.footer-links a{font-size:14px;color:var(--d-muted);transition:var(--tr);display:inline-block}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact li{font-size:14px;color:var(--d-muted);margin-bottom:9px;line-height:1.75}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;
}
.footer-bottom a{color:var(--d-muted)}
.footer-bottom a:hover{color:var(--accent)}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .sec{padding:64px 0}
  .nav-main{display:none}
  .nav-toggle{display:flex}
  .mega-wrap{display:none}
  .hero{padding:64px 0}
  .hero-visual{padding:24px 0 0}
  .hero-device{position:static;width:100%;margin-top:18px}
  .snap-card{flex:0 0 calc((100% - 24px)/2)}
  .reviews-col--offset{padding-top:0}
  .dl-buttons{justify-content:flex-start;margin-top:24px}
  .qr-box{margin:24px 0 0}
  .mini-cta{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:18px;padding-right:18px}
  .sec{padding:48px 0}
  body{font-size:15.5px;line-height:1.85}
  .hero{padding:48px 0}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .snap-card{flex:0 0 85vw}
  .value-item{gap:14px;padding:18px 0}
  .value-num{width:38px;height:38px;border-radius:10px;font-size:14px}
  .spec-card{padding:22px}
  .spec-card .badge{position:static;display:inline-block;margin-bottom:10px}
  .spec-card h3{padding-right:0}
  .spec-card dl{grid-template-columns:1fr}
  .spec-card dd{text-align:left;padding-top:0;border-top:0}
  .spec-card dt{border-top:1px solid var(--line);padding-bottom:2px}
  .footer-grid{gap:28px}
  .news-mini img{width:80px;height:80px}
  .mini-cta{padding:22px}
}
@media screen and (min-width:1440px){
  .grid-container{max-width:1240px}
  .sec{padding:96px 0}
}

/* roulang page: article */
:root{
  --ink:#0C3B34;
  --ink-2:#14574C;
  --accent:#F05A28;
  --accent-dark:#D9481B;
  --jade:#1F9E8A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --line:#E2DCD0;
  --text:#1B2421;
  --muted:#626C67;
  --on-dark:#F2F6F4;
  --on-dark-muted:#A9C0B9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 2px 10px rgba(12,59,52,.06);
  --shadow-md:0 6px 18px rgba(12,59,52,.09);
  --shadow-lg:0 12px 28px rgba(12,59,52,.14);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;}
a{color:var(--jade);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4,h5{font-family:var(--font-cn);color:var(--ink);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.15em;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px;}

/* Foundation 覆写 */
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
body,body p,body h1,body h2,body h3,body h4,body h5,body li,body td{font-family:var(--font-cn);}
body p{font-size:16px;line-height:1.9;}
.callout{margin:0;border:none;border-radius:var(--radius-img);}
.label{border-radius:999px;font-weight:600;}

/* 顶部详情标识条 */
.top-accent{height:4px;background:var(--accent);}

/* Header / 导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 10px rgba(12,59,52,.08);}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:68px;
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);
  display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(2,1fr);
  gap:3px;padding:7px;flex-shrink:0;
}
.logo-mark i{display:block;background:var(--accent);border-radius:1.5px;}
.logo-mark i:nth-child(1){grid-column:span 2;}
.logo-text{
  display:flex;flex-direction:column;
  font-size:16px;font-weight:700;color:var(--ink);line-height:1.16;letter-spacing:-.01em;
}
.logo-text small{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em;margin-top:2px;}
.nav-main{display:flex;align-items:center;gap:26px;}
.nav-main > a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:6px 0;text-decoration:none;white-space:nowrap;
}
.nav-main > a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-main > a:hover{color:var(--ink);}
.nav-main > a:hover::after,.nav-main > a.is-active::after{transform:scaleX(1);}
.nav-main > a.is-active{color:var(--ink);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}

/* Mega 面板 */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;
  background:transparent;border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:14px;font-weight:500;color:var(--ink);cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease,color .2s ease;
}
.mega-trigger:hover{border-color:var(--jade);color:var(--jade);}
.mega-trigger[aria-expanded="true"]{background:var(--surface-2);border-color:var(--line);}
.caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;transition:transform .2s ease;}
.mega-trigger[aria-expanded="true"] .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 16px);
  width:820px;max-width:calc(100vw - 48px);
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:0 18px 44px rgba(12,59,52,.16);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col h4{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:14px;}
.mega-list{list-style:none;margin:0;padding:0;}
.mega-list li{margin-bottom:10px;}
.mega-list a{
  display:flex;align-items:center;gap:9px;font-size:14.5px;color:var(--text);font-weight:500;
  padding:6px 8px;border-radius:8px;transition:background-color .18s ease,color .18s ease;
}
.mega-list a:hover{background:var(--surface-2);color:var(--ink-2);}
.mega-list .dot{width:6px;height:6px;border-radius:2px;background:var(--jade);flex-shrink:0;}
.mega-post{display:block;padding:9px 0;border-bottom:1px dashed var(--line);}
.mega-post:last-child{border-bottom:none;}
.mega-post strong{display:block;font-size:14.5px;font-weight:600;color:var(--text);line-height:1.5;}
.mega-post span{display:block;font-size:12.5px;color:var(--muted);margin-top:4px;}
.mega-post:hover strong{color:var(--ink-2);}
.mega-card{
  background:var(--surface-2);border-radius:14px;padding:14px;
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;}
.mega-card p{font-size:13.5px;line-height:1.75;color:var(--muted);margin:12px 0 12px;}

/* 移动端抽屉 */
.nav-toggle{
  display:none;align-items:center;gap:7px;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding:9px 13px;font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--jade);color:var(--jade);}
.drawer-extra{display:none;}

/* 按钮 */
.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;margin:0;
  border:1.5px solid transparent;border-radius:var(--radius-btn);
  font-family:var(--font-cn);font-size:15px;font-weight:600;line-height:1;
  text-decoration:none;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.button.btn-primary{background:var(--accent);color:#fff;}
.button.btn-primary:hover,.button.btn-primary:focus{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(240,90,40,.28);}
.button.btn-primary:active{transform:translateY(0);box-shadow:none;}
.button.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.button.btn-ghost:hover,.button.btn-ghost:focus{background:var(--ink);color:#fff;}
.button.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.button.btn-ghost-light:hover,.button.btn-ghost-light:focus{background:#fff;color:var(--ink);border-color:#fff;}
.button.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.button.is-disabled,.button[disabled]{opacity:.45;box-shadow:none;transform:none;pointer-events:none;}

/* 板块通用 */
.section{padding:88px 0;}
.section--surface{background:var(--surface);}
.section--tint{background:var(--surface-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.35;}
.section-sub{font-size:15px;color:var(--muted);margin:8px 0 0;}
.link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;color:var(--ink-2);}
.link-arrow:hover{color:var(--accent);}
.link-arrow i{font-size:12px;transition:transform .2s ease;}
.link-arrow:hover i{transform:translateX(3px);}

/* 面包屑 */
.crumbs-band{background:var(--surface-2);border-bottom:1px solid var(--line);}
.crumbs{
  display:flex;align-items:center;gap:10px;
  padding:14px 0;font-size:13px;color:var(--muted);
  min-width:0;
}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--jade);}
.crumbs .sep{color:var(--line);}
.crumbs .current{
  color:var(--text);font-weight:500;
  max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* 文章主体 */
.article-main{padding:56px 0 72px;}
.article-card{
  max-width:880px;margin:0 auto;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-sm);
  padding:clamp(22px,4vw,48px);
}
.article-tag.label{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(31,158,138,.13);color:var(--jade);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
}
.article-title{
  font-size:clamp(26px,3.8vw,42px);line-height:1.32;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);margin:18px 0 20px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 0;
  font-size:13px;color:var(--muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta span + span::before{
  content:"";display:inline-block;width:1px;height:12px;background:var(--line);margin:0 12px;
}
.article-meta i{color:var(--jade);font-size:12px;}

.article-body{border-top:1px solid var(--line);margin-top:28px;padding-top:28px;}
.article-body > *{max-width:720px;}
.article-body p{font-size:16px;line-height:1.9;margin:0 0 1.15em;color:var(--text);}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.4vw,26px);font-weight:700;color:var(--ink);
  margin:1.9em 0 .8em;padding-left:15px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:18px;
  background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin:1.6em 0 .6em;}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.15em;}
.article-body li{margin-bottom:.6em;line-height:1.85;}
.article-body blockquote{
  background:var(--surface-2);border-left:3px solid var(--jade);
  border-radius:0 10px 10px 0;padding:16px 20px;margin:1.4em 0;color:#3B4741;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--jade);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body img{border-radius:var(--radius-img);margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;}
.article-body code{
  font-family:var(--font-mono);font-size:.92em;background:var(--surface-2);
  border-radius:6px;padding:2px 6px;word-break:break-word;
}
.article-body pre{
  background:var(--surface-2);border-radius:10px;padding:16px 18px;overflow-x:auto;
  font-family:var(--font-mono);font-size:14px;line-height:1.8;margin:1.4em 0;
}
.article-body pre code{background:none;padding:0;font-size:inherit;}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;line-height:1.7;}
.article-body th{background:var(--surface-2);color:var(--ink);font-weight:600;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0;}

.article-empty{
  border-top:1px solid var(--line);margin-top:28px;padding:56px 0 16px;text-align:center;
}
.article-empty .empty-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:56px;height:56px;border-radius:50%;
  background:rgba(240,90,40,.1);color:var(--accent);
  font-size:24px;font-weight:700;margin-bottom:18px;
}
.article-empty h2{font-size:24px;margin-bottom:12px;}
.article-empty p{max-width:520px;margin:0 auto 24px;color:var(--muted);font-size:15.5px;}

.article-foot-actions{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:36px;padding-top:26px;
}

/* 相关推荐 */
.related-grid{margin-top:4px;}
.rel-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);text-decoration:none;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(31,158,138,.35);}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:16px;font-weight:600;line-height:1.55;color:var(--ink);}
.rel-card:hover h3{color:var(--ink-2);}
.rel-body p{font-size:14px;line-height:1.75;color:var(--muted);margin:0;flex:1;}
.rel-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);}
.rel-meta .chip{
  background:rgba(31,158,138,.13);color:var(--jade);
  border-radius:999px;padding:3px 10px;font-weight:600;
}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--line);border-left:3px solid transparent;transition:border-color .2s ease;}
.faq-item:last-child{border-bottom:none;}
.faq-item[open]{border-left-color:var(--jade);background:#FBF9F5;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 52px 18px 20px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--accent);font-size:22px;font-weight:600;line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";}
.faq-item summary:hover{color:var(--ink-2);}
.faq-body{padding:0 52px 22px 20px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-body p:last-child{margin-bottom:0;}

/* CTA 深色条 */
.cta-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(rgba(12,59,52,.94),rgba(12,59,52,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-radius:20px;padding:44px;color:var(--on-dark);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.05) 0 2px,transparent 2px 14px);
}
.cta-band > *{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:clamp(21px,2.6vw,28px);line-height:1.4;}
.cta-band p{color:var(--on-dark-muted);font-size:15px;margin:10px 0 0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* Footer */
.site-footer{background:var(--ink);color:var(--on-dark-muted);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:32px;}
.footer-brand .logo{align-items:flex-start;}
.footer-brand .logo-mark{background:#fff;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-text small{color:var(--on-dark-muted);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--on-dark-muted);margin:18px 0 0;max-width:360px;}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-links,.footer-contact{list-style:none;margin:0;padding:0;}
.footer-links li,.footer-contact li{font-size:14px;line-height:1.8;margin-bottom:10px;}
.footer-links a{color:var(--on-dark-muted);}
.footer-links a:hover{color:var(--accent);padding-left:2px;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--on-dark-muted);
}

/* 响应式 */
@media screen and (max-width:1024px){
  .nav-toggle{display:inline-flex !important;}
  .mega-wrap{display:none;}
  .nav-main{
    position:fixed;top:72px;left:0;right:0;bottom:0;z-index:75;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);border-top:1px solid var(--line);
    padding:16px 24px 48px;overflow-y:auto;
    transform:translateX(103%);transition:transform .26s ease;
  }
  .nav-main.is-open{transform:translateX(0);}
  .nav-main > a{
    width:100%;font-size:16px;padding:15px 0;border-bottom:1px solid var(--line);
  }
  .nav-main > a::after{display:none;}
  .nav-main > a.is-active{padding-left:12px;border-left:3px solid var(--accent);}
  .drawer-extra{display:block;width:100%;margin-top:22px;}
  .drawer-acc{border:1px solid var(--line);border-radius:12px;padding:4px 14px;background:var(--surface-2);}
  .drawer-acc summary{
    list-style:none;cursor:pointer;padding:12px 0;font-size:15px;font-weight:600;color:var(--ink);
  }
  .drawer-acc summary::-webkit-details-marker{display:none;}
  .drawer-acc ul{list-style:none;margin:0 0 10px;padding:0;}
  .drawer-acc li{margin-bottom:8px;}
  .drawer-acc a{font-size:14.5px;color:var(--text);}
  .drawer-cta{width:100%;margin-top:16px;}
  body.nav-open{overflow:hidden;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (min-width:1025px){
  .nav-toggle{display:none !important;}
  .drawer-extra{display:none !important;}
}
@media screen and (max-width:768px){
  .article-main{padding:40px 0 56px;}
  .crumbs .current{max-width:28ch;}
  .cta-band{padding:28px;}
  .article-foot-actions{gap:16px;}
  .section-head{margin-bottom:22px;}
}
@media screen and (max-width:640px){
  body{font-size:15.5px;line-height:1.85;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .logo-text small{display:none;}
  .logo-text{font-size:15px;}
  .button{height:46px;padding:0 20px;font-size:14.5px;}
  .button.btn-sm{height:38px;padding:0 15px;font-size:13.5px;}
  .section{padding:48px 0;}
  .article-card{border-radius:16px;}
  .article-body p{font-size:15.5px;}
  .article-meta{font-size:12.5px;}
  .article-meta span + span::before{margin:0 9px;}
  .faq-item summary{padding:16px 44px 16px 16px;font-size:16px;}
  .faq-body{padding:0 44px 18px 16px;font-size:14.5px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-actions{width:100%;}
  .cta-actions .button{flex:1 1 auto;}
}
@media screen and (min-width:1440px){
  .grid-container{max-width:1240px;}
  .section{padding:96px 0;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink:#0C3B34;
  --ink-2:#14574C;
  --accent:#F05A28;
  --accent-deep:#D9481B;
  --jade:#1F9E8A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --line:#E2DCD0;
  --text:#1B2421;
  --muted:#626C67;
  --on-dark:#F2F6F4;
  --on-dark-muted:#A9C0B9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 2px 10px rgba(12,59,52,.06);
  --shadow-hover:0 12px 28px rgba(12,59,52,.14);
  --container:1200px;
  --gap:24px;
  --section:88px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--jade);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.01em;}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.3;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
h4{font-size:16px;line-height:1.5;}
:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(240,90,40,.18);}

/* ============ 容器与骨架 ============ */
.grid-container{
  max-width:var(--container);
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
main{display:block;}
.section{padding:var(--section) 0;}
.section--bg{background:var(--bg);}
.section--surface{background:var(--surface);}
.section--surface2{background:var(--surface-2);}
.section--ink{background:var(--ink);color:var(--on-dark);}
.section--ink h2,.section--ink h3{color:var(--on-dark);}

.grid-x.gutter{margin-left:-12px;margin-right:-12px;}
.grid-x.gutter > .cell{padding-left:12px;padding-right:12px;}

.section-head{max-width:720px;margin-bottom:28px;}
.section-head p{color:var(--muted);font-size:15px;margin-top:10px;}
.section--ink .section-head p{color:var(--on-dark-muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--jade);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:2px;background:var(--accent);}
.section--ink .eyebrow{color:var(--on-dark-muted);}

/* ============ 按钮 ============ */
.btn,.button.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  border:1.5px solid transparent;background:transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
  margin:0;
}
.btn-primary{
  background:var(--accent);color:#fff;border-color:var(--accent);
  box-shadow:0 2px 10px rgba(240,90,40,.22);
}
.btn-primary:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(240,90,40,.26);}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(240,90,40,.22);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;transform:none;pointer-events:none;}

/* ============ 标签 ============ */
.label-chip,.label.badge-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  background:rgba(31,158,138,.12);color:#16776A;
}
.label-chip--accent{background:rgba(240,90,40,.12);color:#C6401A;}
.label-chip--light{background:rgba(255,255,255,.14);color:#fff;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 10px rgba(12,59,52,.08);}
.nav-bar{display:flex;align-items:center;gap:22px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);
  display:grid;grid-template-columns:repeat(3,1fr);gap:3px;padding:8px;flex:0 0 auto;
}
.logo-mark i{display:block;background:var(--accent);border-radius:2px;}
.logo-mark i:nth-child(1){opacity:.5;}
.logo-mark i:nth-child(2){opacity:.78;}
.logo-mark i:nth-child(3){opacity:1;}
.logo-text{font-size:16px;font-weight:700;line-height:1.25;display:flex;flex-direction:column;}
.logo-text small{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em;}
.nav-main{display:flex;align-items:center;gap:18px;margin-left:6px;}
.nav-main > a{
  position:relative;padding:6px 2px;font-size:15px;font-weight:500;color:var(--muted);white-space:nowrap;
}
.nav-main > a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-main > a:hover{color:var(--ink);}
.nav-main > a:hover::after{transform:scaleX(1);}
.nav-main > a.is-active{color:var(--ink);font-weight:600;}
.nav-main > a.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}

.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:#fff;color:var(--ink);font-size:14px;font-weight:600;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.mega-trigger:hover{border-color:var(--ink);background:var(--surface-2);}
.mega-trigger[aria-expanded="true"]{border-color:var(--ink);background:var(--ink);color:#fff;}
.caret{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s ease;}
.mega-trigger[aria-expanded="true"] .caret{transform:rotate(-135deg) translateY(-2px);}

.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:820px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 18px 44px rgba(12,59,52,.16);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  z-index:70;
}
.mega-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px;letter-spacing:.02em;}
.mega-list li + li{margin-top:8px;}
.mega-list a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:4px 0;}
.mega-list a:hover{color:var(--ink);}
.mega-list .dot{width:6px;height:6px;border-radius:50%;background:var(--jade);flex:0 0 auto;transition:background .2s ease;}
.mega-list a:hover .dot{background:var(--accent);}
.mega-post{display:block;padding:10px 0;border-bottom:1px dashed var(--line);}
.mega-post:last-child{border-bottom:0;}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.6;}
.mega-post span{font-size:12px;color:var(--muted);}
.mega-post:hover strong{color:var(--ink-2);}
.mega-card{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--surface-2);
  display:flex;flex-direction:column;
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.mega-card-body{padding:16px;}
.mega-card-body p{font-size:13px;color:var(--muted);margin-bottom:12px;}

.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;margin-left:auto;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .22s ease;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}
.menu-toggle.is-open span{background:transparent;}
.menu-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}
.drawer-extra{display:none;}
.nav-overlay{
  position:fixed;inset:0;background:rgba(12,59,52,.45);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s;z-index:55;
}
.nav-overlay.is-open{opacity:1;visibility:visible;}

/* ============ 首屏 Banner ============ */
.page-hero{position:relative;background:var(--ink);overflow:hidden;}
.page-hero-media{position:absolute;inset:0;}
.page-hero-media img{width:100%;height:100%;object-fit:cover;}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(12,59,52,.42),rgba(12,59,52,.62));
}
.page-hero-inner{position:relative;z-index:2;min-height:280px;display:flex;flex-direction:column;justify-content:flex-end;padding-top:56px;padding-bottom:44px;}
.page-hero h1{color:#fff;max-width:820px;}
.page-hero-sub{color:rgba(242,246,244,.86);font-size:16px;margin-top:14px;max-width:640px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(242,246,244,.72);margin-bottom:18px;}
.crumbs a{color:rgba(242,246,244,.72);}
.crumbs a:hover{color:#fff;}
.crumbs span.sep{opacity:.55;}

/* ============ 栏目说明 ============ */
.lede{max-width:720px;font-size:16px;color:var(--text);}
.lede strong{color:var(--ink);}

/* ============ 时间轴 ============ */
.timeline{margin-top:40px;max-width:880px;}
.timeline-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:34px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:27px;top:58px;bottom:2px;width:2px;
  background:var(--line);
}
.timeline-item:last-child::before{display:none;}
.timeline-node{
  width:56px;height:56px;border-radius:50%;background:var(--surface);
  border:2px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:17px;position:relative;z-index:1;
  transition:background .22s ease,border-color .22s ease,color .22s ease,transform .22s ease;
}
.timeline-item:nth-child(odd) .timeline-node{border-color:var(--accent);color:var(--accent);}
.timeline-item:hover .timeline-node{transform:translateY(-2px);box-shadow:var(--shadow);}
.timeline-body{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow);transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.timeline-body:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#D6CFC2;}
.timeline-body h3{margin-bottom:8px;}
.timeline-body p{font-size:15px;color:var(--muted);}
.timeline-meta{margin-top:12px;display:flex;flex-wrap:wrap;gap:10px;}
.timeline-meta .label-chip{font-size:12px;padding:4px 12px;}

/* ============ 信息卡 ============ */
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow);height:100%;
  transition:box-shadow .22s ease,transform .22s ease;
}
.info-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.info-card h3{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.info-card h3 .mark{width:26px;height:26px;border-radius:8px;background:rgba(31,158,138,.14);color:#16776A;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;}
.info-card--accent h3 .mark{background:rgba(240,90,40,.14);color:#C6401A;}
.check-list li{position:relative;padding-left:26px;color:var(--muted);font-size:15px;line-height:1.85;}
.check-list li + li{margin-top:10px;}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:7px;
  border-left:2px solid var(--jade);border-bottom:2px solid var(--jade);
  transform:rotate(-45deg);
}
.info-card--accent .check-list li::before{border-color:var(--accent);}

/* ============ 图文区块 ============ */
.split-media{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--surface);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.split-body{padding-left:8px;}
.split-body h2{margin-bottom:14px;}
.split-body p{color:var(--muted);font-size:15.5px;}
.rule-list{margin-top:22px;border-top:1px dashed var(--line);}
.rule-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line);}
.rule-list li strong{color:var(--ink);font-size:15px;flex:0 0 96px;}
.rule-list li span{color:var(--muted);font-size:15px;}

/* ============ FAQ ============ */
.faq-list{max-width:840px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);position:relative;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 18px;
  font-size:17px;font-weight:600;color:var(--ink);position:relative;
  transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink-2);}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:2px;
  background:var(--jade);transform:scaleY(0);transform-origin:top;transition:transform .2s ease;
}
.faq-item[open] summary::before{transform:scaleY(1);}
.faq-item summary::after{
  content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:600;color:var(--accent);transition:transform .22s ease;
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-answer{padding:0 44px 22px 18px;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-answer a{text-decoration:underline;text-decoration-color:rgba(31,158,138,.5);}

/* ============ 表单 ============ */
.form-card{
  background:var(--surface);border-radius:var(--radius-card);padding:32px;
  max-width:720px;box-shadow:0 18px 44px rgba(0,0,0,.18);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;color:var(--text);font-size:15px;font-family:inherit;
  padding:12px 14px;line-height:1.7;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:130px;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--jade);box-shadow:0 0 0 2px rgba(31,158,138,.35);
}
.field.has-error input,.field.has-error textarea{border-color:var(--accent);box-shadow:none;}
.field .err{display:none;color:var(--accent);font-size:13px;margin-top:6px;}
.field.has-error .err{display:block;}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px;}
.privacy-note{font-size:12.5px;color:var(--muted);}
.form-note{color:var(--on-dark-muted);font-size:14px;max-width:520px;}
.form-result{display:none;margin-top:16px;font-size:14px;color:#16776A;font-weight:600;}
.form-result.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:var(--on-dark-muted);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand .logo{color:var(--on-dark);margin-bottom:16px;}
.footer-brand .logo-text small{color:var(--on-dark-muted);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--on-dark-muted);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links li + li,.footer-contact li + li{margin-top:10px;}
.footer-links a,.footer-contact li{font-size:14px;color:var(--on-dark-muted);}
.footer-links a{display:inline-block;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:var(--accent);transform:translateX(2px);}
.footer-contact li strong{color:#fff;font-weight:600;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--on-dark-muted);
}

/* ============ 响应式 ============ */
@media screen and (max-width:1360px){
  .nav-main{gap:14px;}
  .nav-main > a{font-size:14px;}
  .mega-panel{width:760px;}
}
@media screen and (max-width:1180px){
  .logo-text{font-size:15px;}
  .nav-actions .nav-cta{padding:0 16px;font-size:14px;}
}
@media screen and (max-width:1024px){
  :root{--section:64px;}
  .menu-toggle{display:inline-flex;}
  .nav-actions{display:none;}
  .nav-main{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 32px;margin:0;z-index:58;
    transform:translateX(102%);transition:transform .24s ease;
    overflow-y:auto;box-shadow:-12px 0 32px rgba(12,59,52,.16);
  }
  .nav-main.is-open{transform:translateX(0);}
  .nav-main > a{
    padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line);color:var(--ink);
  }
  .nav-main > a::after{display:none;}
  .nav-main > a.is-active{color:var(--accent);}
  .drawer-extra{display:block;margin-top:24px;}
  .drawer-extra .btn{width:100%;}
  .drawer-note{font-size:13px;color:var(--muted);margin-top:14px;}
  .split-body{padding-left:0;margin-top:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
}
@media screen and (max-width:768px){
  .page-hero-inner{min-height:260px;padding-top:40px;padding-bottom:36px;}
  .timeline-item{grid-template-columns:44px 1fr;gap:16px;}
  .timeline-node{width:44px;height:44px;font-size:15px;}
  .timeline-item::before{left:21px;top:46px;}
  .timeline-body{padding:18px 18px;}
  .split-media img{aspect-ratio:16/10;}
  .form-card{padding:24px 20px;}
}
@media screen and (max-width:640px){
  :root{--section:48px;}
  .grid-container{padding-left:18px;padding-right:18px;}
  .grid-x.gutter{margin-left:-9px;margin-right:-9px;}
  .grid-x.gutter > .cell{padding-left:9px;padding-right:9px;}
  body{font-size:15.5px;line-height:1.85;}
  .logo-text small{display:none;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .form-actions{flex-direction:column;align-items:stretch;}
  .form-actions .btn{width:100%;}
  .rule-list li{flex-direction:column;gap:6px;}
  .rule-list li strong{flex:none;}
  .faq-item summary{padding:18px 40px 18px 14px;font-size:16px;}
  .faq-answer{padding:0 16px 20px 14px;}
}
@media screen and (min-width:1441px){
  :root{--container:1280px;--section:96px;}
}

/* roulang page: category3 */
:root{
  --ink:#0C3B34;
  --ink-2:#14574C;
  --accent:#F05A28;
  --accent-dark:#D9481B;
  --jade:#1F9E8A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --line:#E2DCD0;
  --text:#1B2421;
  --muted:#626C67;
  --on-dark:#F2F6F4;
  --on-dark-muted:#A9C0B9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow:0 2px 10px rgba(12,59,52,.06);
  --shadow-hover:0 12px 28px rgba(12,59,52,.14);
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:var(--font);}
h1{font-size:clamp(30px,4.4vw,46px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
a{color:var(--jade);text-decoration:none;border-bottom:1px solid rgba(31,158,138,.4);transition:color .2s ease,border-color .2s ease;}
a:hover,a:focus{color:var(--accent);border-bottom-color:rgba(240,90,40,.5);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,158,138,.45);outline-offset:2px;border-radius:4px;}

/* ---------- Foundation 覆写 ---------- */
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;min-width:0;}
.callout{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 24px;
  margin:0;
  color:var(--text);
}
.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;margin:0;
  font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--radius-btn);border:1.5px solid transparent;
  background:var(--accent);color:#fff;
  transition:background .22s ease,transform .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
  box-shadow:var(--shadow);
}
.button:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.button:active{transform:translateY(0);}
.button:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(240,90,40,.35);}
.button.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);box-shadow:none;}
.button.btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.button.btn-dark-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);box-shadow:none;}
.button.btn-dark-ghost:hover{background:#fff;color:var(--ink);border-color:#fff;}
.button[disabled],.button.is-disabled{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed;}
.label{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:13px;line-height:1.6;font-weight:600;
  background:rgba(31,158,138,.12);color:#12796A;border:1px solid rgba(31,158,138,.25);
}
@media screen and (max-width:640px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .grid-x{margin-left:-9px;margin-right:-9px;}
  .grid-x>.cell{padding-left:9px;padding-right:9px;}
  body{font-size:15.5px;line-height:1.85;}
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 10px rgba(12,59,52,.08);}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;border-bottom:none;color:var(--ink);}
.logo:hover{color:var(--ink);border-bottom:none;}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);
  display:inline-flex;align-items:flex-end;justify-content:center;gap:3px;padding-bottom:9px;
  flex:none;
}
.logo-mark i{display:block;width:3px;background:var(--accent);border-radius:2px;height:16px;}
.logo-mark i:nth-child(2){height:11px;background:#F7F5F0;}
.logo-mark i:nth-child(3){height:7px;background:var(--jade);}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.logo-text small{font-size:11px;font-weight:400;color:var(--muted);letter-spacing:0;}
.nav-main{display:flex;align-items:center;gap:4px;}
.nav-main a{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:15px;font-weight:500;color:var(--ink);border-bottom:none;border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-main a:hover{color:var(--ink-2);background:var(--surface-2);border-bottom:none;}
.nav-main a.is-active{color:var(--ink);}
.nav-main a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line);color:var(--ink);
  font-size:14px;font-weight:500;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.mega-trigger:hover{border-color:var(--ink);background:var(--surface-2);}
.mega-trigger:focus-visible{outline:3px solid rgba(31,158,138,.4);outline-offset:2px;}
.caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid var(--ink);transition:transform .2s ease;}
.mega-wrap.is-open .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:840px;max-width:calc(100vw - 48px);
  background:#fff;border-radius:var(--radius-card);border:1px solid var(--line);
  box-shadow:0 18px 44px rgba(12,59,52,.16);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);pointer-events:none;
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  z-index:70;
}
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
@media screen and (min-width:1025px){
  .mega-wrap:hover .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
}
.mega-col h4{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:14px;text-transform:uppercase;}
.mega-list li{margin-bottom:6px;}
.mega-list a{
  display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:8px;
  font-size:14.5px;color:var(--ink);border-bottom:none;
}
.mega-list a:hover{background:var(--surface-2);color:var(--ink-2);border-bottom:none;}
.dot{width:6px;height:6px;border-radius:50%;background:var(--jade);flex:none;}
.mega-list a:hover .dot{background:var(--accent);}
.mega-post{display:block;padding:10px 0;border-bottom:1px dashed var(--line);color:var(--ink);}
.mega-post:last-child{border-bottom:none;}
.mega-post strong{display:block;font-size:14.5px;font-weight:600;line-height:1.6;}
.mega-post span{font-size:12.5px;color:var(--muted);}
.mega-post:hover strong{color:var(--ink-2);}
.mega-card{
  background:var(--surface-2);border-radius:var(--radius-card);padding:18px;display:flex;flex-direction:column;gap:10px;
}
.mega-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:10px;}
.mega-card p{font-size:13.5px;color:var(--muted);line-height:1.7;margin:0;}
.mega-card .button{height:40px;font-size:14px;padding:0 18px;align-self:flex-start;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;}
.nav-toggle:hover{border-color:var(--ink);background:var(--surface-2);}
.nav-toggle:focus-visible{outline:3px solid rgba(31,158,138,.4);outline-offset:2px;}
.mobile-drawer{
  position:fixed;inset:0;background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:20px 24px 32px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;}
.drawer-close{
  width:42px;height:42px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;color:var(--ink);cursor:pointer;
}
.drawer-close:hover{background:var(--surface-2);}
.drawer-nav a{
  display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--ink);
  border-bottom:1px solid var(--line);border-radius:0;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--accent);background:transparent;}
.drawer-cta{margin-top:26px;width:100%;}

@media screen and (max-width:1024px){
  .nav-main-wrap,.nav-actions .mega-wrap{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions{gap:10px;}
  .nav-actions .button{display:none;}
}

/* ---------- Page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);color:var(--on-dark);}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  filter:saturate(.9);
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(12,59,52,.93) 0%,rgba(12,59,52,.78) 55%,rgba(12,59,52,.66) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;padding:72px 0 68px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--on-dark-muted);margin-bottom:18px;}
.breadcrumb a{color:var(--on-dark-muted);border-bottom:none;}
.breadcrumb a:hover{color:var(--accent);border-bottom:none;}
.breadcrumb span{color:var(--on-dark-muted);}
.breadcrumb .now{color:var(--on-dark);}
.page-hero h1{color:var(--on-dark);max-width:820px;}
.page-hero .hero-sub{margin-top:14px;font-size:17px;line-height:1.85;color:var(--on-dark-muted);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.hero-actions .button{height:48px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-badges .label{background:rgba(255,255,255,.1);color:var(--on-dark);border-color:rgba(255,255,255,.2);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec) 0;}
.section.surface{background:var(--surface);}
.section.surface-2{background:var(--surface-2);}
.section.dark{background:var(--ink);color:var(--on-dark);}
.section.dark h2,.section.dark h3{color:var(--on-dark);}
.sec-head{max-width:720px;margin-bottom:28px;}
.sec-head h2{margin-bottom:12px;}
.sec-head p{color:var(--muted);font-size:15.5px;line-height:1.85;}
.section.dark .sec-head p{color:var(--on-dark-muted);}
.lead-note{font-size:15px;color:var(--muted);max-width:720px;line-height:1.9;}

@media screen and (max-width:1024px){
  :root{--sec:64px;}
}
@media screen and (max-width:640px){
  :root{--sec:48px;}
  .page-hero .hero-inner{padding:52px 0 48px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .hero-actions .button{width:100%;}
}

/* ---------- 规格卡 ---------- */
.spec-card{
  position:relative;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 24px 22px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.spec-card::before{
  content:"";position:absolute;left:24px;top:0;width:52px;height:4px;
  background:var(--accent);border-radius:0 0 4px 4px;
}
.spec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6CFC0;}
.spec-card h3{margin-bottom:6px;}
.spec-card .spec-tag{margin-bottom:16px;display:inline-flex;}
.spec-list{display:grid;grid-template-columns:100px 1fr;gap:0 14px;}
.spec-list dt{
  font-size:14px;font-weight:600;color:var(--ink);line-height:1.9;
  padding:10px 0;border-top:1px solid var(--line);
}
.spec-list dd{
  margin:0;font-size:14px;color:var(--muted);line-height:1.9;
  padding:10px 0;border-top:1px solid var(--line);
}
.spec-list dt:first-of-type,.spec-list dd:first-of-type{border-top-color:transparent;}

/* ---------- 图文交错卡片墙 ---------- */
.stack-row{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center;
  padding:28px 0;border-top:1px dashed var(--line);
}
.stack-row:first-of-type{border-top:none;padding-top:0;}
.stack-row.is-flip .stack-media{order:2;}
.stack-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line);}
.stack-body h3{margin-bottom:10px;}
.stack-body p{color:var(--muted);font-size:15.5px;line-height:1.9;margin-bottom:12px;}
.stack-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--surface-2);color:var(--ink-2);font-size:13px;font-weight:500;
}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--jade);}
@media screen and (max-width:1024px){
  .stack-row{grid-template-columns:1fr;gap:20px;}
  .stack-row.is-flip .stack-media{order:0;}
}

/* ---------- 深色数据条 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stat-item{
  border-left:3px solid var(--accent);padding:6px 0 6px 20px;
}
.stat-item strong{display:block;font-size:30px;line-height:1.3;color:var(--on-dark);font-weight:700;letter-spacing:-.01em;}
.stat-item span{display:block;font-size:14px;color:var(--on-dark-muted);line-height:1.8;margin-top:4px;}
@media screen and (max-width:640px){
  .stat-strip{grid-template-columns:1fr;gap:18px;}
  .stat-item strong{font-size:24px;}
}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 48px 20px 0;font-size:17px;font-weight:600;color:var(--ink);
  line-height:1.6;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--ink-2);}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:24px;font-weight:400;color:var(--accent);line-height:1;
  transition:transform .22s ease,color .22s ease;
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-item[open] summary{color:var(--ink);}
.faq-item[open] .faq-body{border-left:3px solid var(--jade);padding-left:16px;}
.faq-body{padding:0 48px 22px 0;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-body p{margin-bottom:.9em;}
.faq-body ul li{position:relative;padding-left:16px;margin-bottom:.5em;}
.faq-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--jade);}

/* ---------- 表单 ---------- */
.consult-wrap{max-width:720px;}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.form-row input,.form-row textarea{
  width:100%;padding:13px 15px;font-size:15px;font-family:inherit;color:var(--text);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-btn);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:#9AA39E;}
.form-row input:hover,.form-row textarea:hover{border-color:#CFC7B8;}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border:2px solid var(--jade);padding:12px 14px;box-shadow:none;
}
.form-row textarea{resize:vertical;min-height:132px;line-height:1.8;}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:8px;}
.form-note{font-size:13px;color:var(--muted);line-height:1.7;max-width:380px;}
.form-error{display:block;font-size:13px;color:var(--accent);margin-top:6px;}
@media screen and (max-width:640px){
  .form-actions .button{width:100%;}
}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--on-dark-muted);padding:64px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
.site-footer .logo{color:var(--on-dark);margin-bottom:16px;}
.site-footer .logo .logo-mark{background:var(--ink-2);}
.site-footer .logo-text small{color:var(--on-dark-muted);}
.footer-brand p{color:var(--on-dark-muted);line-height:1.9;margin:0;}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-links li,.footer-contact li{margin-bottom:10px;line-height:1.8;}
.footer-links a,.footer-contact a{color:var(--on-dark-muted);border-bottom:none;transition:color .2s ease,transform .2s ease;display:inline-block;}
.footer-links a:hover,.footer-contact a:hover{color:var(--accent);transform:translateX(2px);border-bottom:none;}
.footer-contact strong{color:var(--on-dark);font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--on-dark-muted);
}
@media screen and (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:640px){
  .site-footer{padding:44px 0 22px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}

/* roulang page: category2 */
:root{
  --ink:#0C3B34;
  --ink-2:#14574C;
  --accent:#F05A28;
  --accent-dark:#D9481B;
  --jade:#1F9E8A;
  --bg:#F7F5F0;
  --surface:#FFFFFF;
  --surface-2:#EFEBE2;
  --line:#E2DCD0;
  --text:#1B2421;
  --muted:#626C67;
  --light:#F2F6F4;
  --light-muted:#A9C0B9;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-sm:0 2px 10px rgba(12,59,52,.06);
  --shadow-lg:0 12px 28px rgba(12,59,52,.14);
  --container:1200px;
  --section-space:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button,input,textarea,select{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}

h1,h2,h3,h4,h5,h6{
  font-family:inherit;
  color:var(--ink);
  font-weight:700;
  line-height:1.35;
  margin:0 0 14px;
  letter-spacing:-.01em;
}
h1{font-size:clamp(28px,3.6vw,40px);line-height:1.3;letter-spacing:-.01em}
h2{font-size:clamp(23px,2.8vw,31px);line-height:1.35}
h3{font-size:20px;font-weight:600;line-height:1.5;letter-spacing:0}
p{margin:0 0 1.15em;font-size:16px;line-height:1.9;color:var(--text)}
p:last-child{margin-bottom:0}

.grid-container{
  max-width:var(--container);
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--ink);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;
}
.skip-link:focus{left:0}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 10px rgba(12,59,52,.08)}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);
  display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(2,1fr);
  gap:3px;padding:7px;flex:0 0 auto;
}
.logo-mark i{display:block;background:rgba(255,255,255,.36);border-radius:2px}
.logo-mark i:first-child{background:var(--accent)}
.logo-mark i:nth-child(2){background:rgba(255,255,255,.7)}
.logo-text{
  display:flex;flex-direction:column;
  font-size:17px;font-weight:700;color:var(--ink);line-height:1.25;letter-spacing:-.01em;
}
.logo-text small{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.02em}

.nav-main{display:flex;align-items:center;gap:24px}
.nav-main a{
  position:relative;font-size:15px;font-weight:500;color:var(--text);
  padding:22px 0;white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:13px;height:2px;
  background:var(--accent);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-main a:hover{color:var(--jade)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--ink);font-weight:600}
.nav-main a.is-active::after{transform:scaleX(1)}
.nav-main a:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:-2px;border-radius:4px}

.nav-actions{display:flex;align-items:center;gap:12px;position:relative}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;
  border:0;background:transparent;color:var(--ink);
  font-size:15px;font-weight:500;padding:10px 12px;border-radius:10px;cursor:pointer;
  transition:background-color .18s ease;
}
.mega-trigger:hover{background:var(--surface-2)}
.mega-trigger:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px}
.caret{
  width:7px;height:7px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg) translateY(-2px);transition:transform .2s ease;
}
.mega-wrap.is-open .caret{transform:rotate(-135deg) translateY(-2px)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:820px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 18px 44px rgba(12,59,52,.16);
  padding:28px;display:grid;grid-template-columns:1fr 1fr 250px;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
  z-index:60;
}
.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:15px;color:var(--ink);margin:0 0 14px;font-weight:700}
.mega-list li{margin-bottom:4px}
.mega-list a{
  display:flex;align-items:center;gap:9px;
  font-size:14px;color:var(--text);padding:8px 10px;border-radius:8px;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.mega-list a:hover{background:var(--surface-2);color:var(--ink);transform:translateX(2px)}
.mega-list .dot{width:6px;height:6px;border-radius:50%;background:var(--jade);flex:0 0 auto}
.mega-post{
  display:block;padding:10px;border-radius:10px;border:1px solid transparent;
  transition:border-color .18s ease,background-color .18s ease;
}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.mega-post span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}
.mega-post:hover{border-color:var(--line);background:var(--bg)}
.mega-card{
  background:var(--surface-2);border-radius:14px;padding:16px;
  display:flex;flex-direction:column;gap:10px;
}
.mega-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px}
.mega-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}

.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle:hover{border-color:var(--ink);background:var(--surface-2)}
.nav-toggle:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px}

@media (min-width:1024px){
  .mega-wrap:hover .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-actions .mega-wrap{display:none}
}

/* ---------- Drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:300;background:var(--surface);
  transform:translateX(100%);transition:transform .25s ease;
  padding:20px 22px 40px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
body.nav-locked{overflow:hidden}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}
.drawer-close{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);font-size:18px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:var(--surface-2)}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:26px}
.drawer-nav a{
  font-size:16px;font-weight:500;color:var(--text);padding:15px 4px;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--accent);font-weight:600}
.drawer-nav a:hover{color:var(--jade)}

/* ---------- Buttons ---------- */
.button.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;margin:0;
  border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.button.btn-primary{background:var(--accent);color:#fff}
.button.btn-primary:hover,.button.btn-primary:focus{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 22px rgba(240,90,40,.28)}
.button.btn-primary:active{transform:translateY(0);box-shadow:none}
.button.btn-outline{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}
.button.btn-outline:hover,.button.btn-outline:focus{background:var(--ink);color:#fff;transform:translateY(-2px)}
.button.btn-outline:active{transform:translateY(0)}
.button.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.45);color:#fff}
.button.btn-ghost-light:hover,.button.btn-ghost-light:focus{background:#fff;color:var(--ink);transform:translateY(-2px)}
.button.btn-white{background:#fff;color:var(--ink);border-color:#fff}
.button.btn-white:hover,.button.btn-white:focus{background:var(--surface-2);color:var(--ink);transform:translateY(-2px)}
.button.btn:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px}
.button.btn[disabled],.button.btn.is-disabled{opacity:.45;box-shadow:none;transform:none;pointer-events:none}
.btn-block{width:100%}
.btn-sm{height:42px;padding:0 20px;font-size:14.5px}

.link-inline{
  color:var(--jade);
  border-bottom:1px solid var(--jade);
  transition:color .18s ease,border-color .18s ease;
}
.link-inline:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- Section basics ---------- */
.section{padding:var(--section-space) 0}
.section-alt{background:var(--surface)}
.section-warm{background:var(--surface-2)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;margin-bottom:28px;
}
.section-head h2{margin-bottom:0}
.section-sub{font-size:15.5px;color:var(--muted);margin:10px 0 0;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--jade);
  margin-bottom:10px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--accent);border-radius:2px}
.lead{font-size:17px;color:var(--muted);max-width:720px}

/* ---------- Hero ---------- */
.hero{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:68px 0 60px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;
  background-image:repeating-linear-gradient(45deg,rgba(12,59,52,.05) 0 2px,transparent 2px 12px);
  border-radius:50%;pointer-events:none;
}
.hero-copy{position:relative;z-index:2}
.hero h1{margin-bottom:16px;max-width:620px}
.hero-sub{font-size:17px;color:var(--muted);margin-bottom:20px;max-width:560px}
.hero-points{margin-bottom:26px;display:flex;flex-direction:column;gap:8px}
.hero-points li{
  display:flex;align-items:center;gap:10px;
  font-size:15px;color:var(--text);font-weight:500;
}
.hero-points li::before{
  content:"✓";color:var(--jade);font-weight:700;font-size:14px;
  width:20px;height:20px;border-radius:50%;background:rgba(31,158,138,.12);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:12px}
.hero-note{font-size:13px;color:var(--muted);line-height:1.7;margin:0}

.hero-visual{position:relative;z-index:2;margin-top:34px}
.hero-media{
  border-radius:20px;overflow:hidden;border:1px solid rgba(12,59,52,.14);
  box-shadow:var(--shadow-sm);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-chip{
  position:absolute;left:18px;bottom:-18px;
  background:#fff;border-radius:14px;border-top:3px solid var(--accent);
  box-shadow:0 12px 28px rgba(12,59,52,.14);
  padding:12px 18px;display:flex;flex-direction:column;gap:2px;
}
.hero-chip strong{font-size:14px;color:var(--ink);font-weight:700}
.hero-chip span{font-size:12.5px;color:var(--muted)}

@media (min-width:1024px){
  .hero-visual{margin-top:0;margin-left:12px}
}

/* ---------- Intro bar ---------- */
.intro-bar{
  background:var(--surface-2);
  border-bottom:1px solid var(--line);
  padding:22px 0;
}
.intro-bar p{
  margin:0;font-size:15.5px;color:#39443F;line-height:1.8;
  border-left:3px solid var(--jade);padding-left:16px;max-width:900px;
}

/* ---------- Compare layout ---------- */
.compare-section{padding-top:72px}
.side-sticky{position:sticky;top:92px}
.anchor-nav{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-sm);margin-bottom:18px;
}
.anchor-nav h3{font-size:14px;letter-spacing:.04em;color:var(--muted);margin:0 0 12px;font-weight:600}
.anchor-nav ul{display:flex;flex-direction:column;position:relative}
.anchor-nav li{position:relative;padding-left:16px}
.anchor-nav li::before{
  content:"";position:absolute;left:3px;top:14px;bottom:14px;width:1px;background:var(--line);
}
.anchor-nav li:first-child::before{top:18px}
.anchor-nav li:last-child::before{bottom:calc(100% - 18px)}
.anchor-nav a{
  display:block;font-size:14.5px;color:var(--text);padding:6px 0;
  transition:color .18s ease,transform .18s ease;
}
.anchor-nav a::before{
  content:"";position:absolute;left:0;top:15px;width:7px;height:7px;border-radius:50%;
  background:#fff;border:2px solid var(--line);transition:border-color .18s ease,background-color .18s ease;
}
.anchor-nav a:hover{color:var(--jade);transform:translateX(2px)}
.anchor-nav a:hover::before{border-color:var(--jade)}
.anchor-nav a:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px;border-radius:4px}

.side-cta{
  background:var(--ink);border-radius:var(--radius-card);padding:22px;color:var(--light);
}
.side-cta .badge{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:#fff;background:rgba(240,90,40,.9);padding:4px 12px;border-radius:999px;margin-bottom:12px;
}
.side-cta h3{color:#fff;font-size:17px;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:var(--light-muted);line-height:1.8;margin-bottom:16px}

/* ---------- Compare blocks ---------- */
.compare-block{margin-bottom:56px}
.compare-block:last-child{margin-bottom:0}
.compare-bar{
  display:grid;grid-template-columns:minmax(200px,34%) 1fr;
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.bar-title{
  background:var(--ink);color:#fff;padding:20px 22px;
  display:flex;flex-direction:column;justify-content:center;gap:6px;
  font-size:18px;font-weight:700;line-height:1.5;
}
.bar-k{font-size:11.5px;font-weight:600;letter-spacing:.1em;color:var(--light-muted);text-transform:uppercase}
.bar-text{
  background:var(--surface);padding:20px 22px;display:flex;align-items:center;
  font-size:15px;line-height:1.8;color:#39443F;
}
.block-body{padding-top:26px}

.figure{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover}

.spec-list{margin:0}
.spec-row{
  display:flex;gap:16px;align-items:flex-start;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.spec-row:first-child{padding-top:0}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-row dt{
  flex:0 0 116px;font-size:15px;font-weight:600;color:var(--ink);line-height:1.7;
}
.spec-row dd{margin:0;font-size:14.5px;color:var(--muted);line-height:1.85}

.mini-title{
  font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:8px;margin:0 0 14px;
}
.mini-title::before{content:"";width:4px;height:16px;background:var(--accent);border-radius:2px}

.step-line{position:relative;padding-left:22px;margin-bottom:8px}
.step-line::before{
  content:"";position:absolute;left:6px;top:10px;bottom:16px;width:1px;background:var(--line);
}
.step-line li{position:relative;padding-bottom:16px}
.step-line li:last-child{padding-bottom:0}
.step-line li::before{
  content:"";position:absolute;left:-21px;top:8px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:2px solid var(--accent);
}
.step-line strong{display:block;font-size:15px;font-weight:600;color:var(--ink);line-height:1.7}
.step-line p{font-size:14.5px;color:var(--muted);margin:4px 0 0;line-height:1.85}

.compare-points li{
  position:relative;padding-left:20px;font-size:14.5px;color:#39443F;
  line-height:1.85;margin-bottom:10px;
}
.compare-points li:last-child{margin-bottom:0}
.compare-points li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:2px;background:var(--jade);
}
.compare-points li strong{color:var(--ink);font-weight:600}

.callout.tip-callout{
  background:var(--surface-2);border:1px solid var(--line);border-left:3px solid var(--jade);
  border-radius:12px;padding:16px 18px;margin:22px 0 0;
  font-size:14.5px;color:#39443F;line-height:1.85;
}
.tip-callout strong{color:var(--ink)}

/* ---------- Rail ---------- */
.rail-section{padding-bottom:64px}
.rail-nav{display:flex;gap:10px}
.rail-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--ink);
  background:transparent;color:var(--ink);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.rail-btn:hover{background:var(--ink);color:#fff}
.rail-btn:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:2px}
.rail-btn:active{transform:translateY(1px)}

.rail{
  max-width:1248px;margin:0 auto;padding:8px 24px 20px;
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease;
}
.rail-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.rail-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img)}
.rail-card h3{font-size:16px;margin:14px 0 6px}
.rail-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.75}

/* ---------- FAQ ---------- */
.faq{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  padding:20px 52px 20px 20px;font-size:17px;font-weight:600;color:var(--ink);
  line-height:1.6;transition:background-color .18s ease,color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--accent);font-size:22px;font-weight:400;transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);content:"−"}
.faq-item summary:hover{background:var(--surface-2);color:var(--ink-2)}
.faq-item summary:focus-visible{outline:3px solid rgba(240,90,40,.35);outline-offset:-3px}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--jade);border-radius:0 2px 2px 0;
}
.faq-body{padding:0 24px 22px 20px}
.faq-body p{font-size:15px;line-height:1.85;color:#39443F;margin:0}

/* ---------- Form ---------- */
.form-section{background:var(--surface-2)}
.form-wrap{
  max-width:720px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-sm);
}
.form-head h2{font-size:clamp(21px,2.4vw,26px);margin-bottom:8px}
.form-head p{font-size:15px;color:var(--muted);margin-bottom:24px}
.contact-form label{
  display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:18px;
}
.contact-form input,.contact-form textarea{
  width:100%;margin-top:8px;padding:13px 15px;
  border:1px solid var(--line);border-radius:10px;background:#fff;
  font-size:15px;color:var(--text);line-height:1.7;
  transition:border-color .18s ease,padding .18s ease;
}
.contact-form textarea{min-height:132px;resize:vertical}
.contact-form input::placeholder,.contact-form textarea::placeholder{color:#9AA39E}
.contact-form input:focus,.contact-form textarea:focus{
  outline:none;border:2px solid var(--jade);padding:12px 14px;
}
.contact-form input:focus:invalid{border-color:var(--accent)}
.form-foot{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-top:6px;
}
.privacy{font-size:13px;color:var(--muted);margin:0;line-height:1.7;max-width:420px}
.form-hint-error{display:block;font-size:13px;color:var(--accent);margin-top:6px;font-weight:500}

/* ---------- Pre-CTA ---------- */
.pre-cta{
  background:var(--surface-2);
  border-top:1px solid var(--line);
  padding:36px 0;
}
.pre-cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.pre-cta h2{font-size:clamp(19px,2.2vw,24px);margin:0 0 6px}
.pre-cta p{margin:0;font-size:14.5px;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--light);padding:64px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:44px;
}
.footer-brand .logo-text{color:#fff}
.footer-brand .logo-text small{color:var(--light-muted)}
.footer-brand p{
  margin:16px 0 0;font-size:14px;color:var(--light-muted);line-height:1.85;
}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 16px}
.footer-links li{margin-bottom:10px}
.footer-links a,.footer-contact li{
  font-size:14px;color:var(--light-muted);line-height:1.8;
}
.footer-links a{display:inline-block;transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--accent);transform:translateX(2px)}
.footer-contact li{margin-bottom:10px}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--light-muted);
}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  :root{--section-space:64px}
  .side-sticky{position:static;margin-bottom:24px}
  .anchor-nav{margin-bottom:16px}
  .anchor-nav ul{flex-direction:row;flex-wrap:wrap;gap:8px}
  .anchor-nav li{padding-left:0}
  .anchor-nav li::before{display:none}
  .anchor-nav a{
    border:1px solid var(--line);border-radius:999px;padding:7px 14px;font-size:13.5px;
  }
  .anchor-nav a::before{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .compare-bar{grid-template-columns:1fr}
  .rail{max-width:100%;padding-left:24px;padding-right:24px}
}

@media (max-width:640px){
  :root{--section-space:48px}
  .grid-container{padding-left:18px;padding-right:18px}
  body{font-size:15.5px;line-height:1.85}
  p{font-size:15.5px;line-height:1.85}
  .hero{padding:44px 0 48px}
  .hero h1{font-size:clamp(24px,7vw,30px)}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .button.btn{width:100%;padding:0 20px}
  .hero-chip{left:12px;bottom:-14px;padding:10px 14px}
  .compare-section{padding-top:48px}
  .compare-block{margin-bottom:40px}
  .form-wrap{padding:22px}
  .rail-card{flex:0 0 78vw}
  .rail{padding-left:18px;padding-right:18px;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .spec-row{flex-direction:column;gap:4px}
  .spec-row dt{flex:none}
  .anchor-nav ul{gap:6px}
}

@media (min-width:1440px){
  :root{--container:1200px;--section-space:96px}
}