/* roulang page: index */
:root{
  --brand:#F25C2A;--brand-dark:#D9481C;--brand-soft:rgba(242,92,42,.12);
  --accent:#12A594;--accent-soft:rgba(18,165,148,.12);
  --lime:#CDF24A;
  --ink:#12141C;--ink-2:#232838;
  --bg:#F6F4EF;--bg-alt:#EFECE4;--card:#FFFFFF;
  --text:#16181D;--text-2:#59606F;--text-3:#8A90A0;
  --line:#E3DFD6;--line-dark:rgba(255,255,255,.12);
  --dtext:#F2F1EC;--dtext-2:#A9AEBF;
  --r-card:16px;--r-img:14px;--r-btn:10px;
  --sh-1:0 1px 2px rgba(18,20,28,.06);
  --sh-2:0 14px 30px -14px rgba(18,20,28,.24);
  --container:1240px;
}
*,*::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","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,textarea,select{font:inherit;color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:#fff;font-size:13px}
.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px;overflow-x:auto;scrollbar-width:none}
.topbar-inner::-webkit-scrollbar{display:none}
.topbar-domain{color:var(--dtext-2);white-space:nowrap;letter-spacing:.02em}
.topbar-tip{color:var(--dtext);white-space:nowrap;position:relative;padding-left:14px}
.topbar-tip::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--lime)}
.topbar-links{display:flex;align-items:center;gap:12px;white-space:nowrap}
.topbar-links a{color:var(--dtext);transition:color .2s ease}
.topbar-links a:hover{color:var(--lime)}
.topbar-links .sep{width:1px;height:12px;background:rgba(255,255,255,.22);display:inline-block}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 10px 26px -20px rgba(18,20,28,.7)}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--ink);flex:0 0 auto}
.brand-mark{width:34px;height:34px;border-radius:50%;background:var(--brand);position:relative;flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:50%;border:2px solid rgba(255,255,255,.9);border-bottom-color:transparent;border-right-color:transparent;transform:rotate(-28deg)}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--text-3);line-height:1;letter-spacing:.14em;margin-top:2px}
.brand-text{display:flex;flex-direction:column;justify-content:center}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-menu a{position:relative;display:inline-block;padding:10px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-2);transition:color .2s ease,background .2s ease}
.nav-menu a::after{content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left center;transition:transform .25s ease}
.nav-menu a:hover{color:var(--ink);background:var(--bg-alt)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--brand)}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s ease}
.nav-toggle i{top:50%;margin-top:-1px}
.nav-toggle i::before{content:"";top:-6px}
.nav-toggle i::after{content:"";top:6px}

/* ---------- 按钮 ---------- */
.s-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease}
.s-btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.s-btn-primary{background:var(--brand);color:#fff}
.s-btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(217,72,28,.9)}
.s-btn-primary:active{transform:translateY(1px)}
.s-btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.s-btn-outline:hover{background:rgba(18,20,28,.06);transform:translateY(-1px)}
.s-btn-outline:active{transform:translateY(1px)}
.s-btn-ghost{background:transparent;color:var(--ink);border-bottom:2px solid var(--brand-soft);border-radius:0;padding:6px 2px}
.s-btn-ghost:hover{border-bottom-color:var(--brand)}
.s-btn-lime{background:var(--lime);color:var(--ink)}
.s-btn-lime:hover{background:#BFE63B;transform:translateY(-1px)}
.s-btn-dark-outline{border-color:rgba(255,255,255,.45);color:var(--dtext)}
.s-btn-dark-outline:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.07)}
.s-btn-sm{padding:9px 16px;font-size:14px}

/* ---------- 徽章 ---------- */
.s-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6}
.s-badge-brand{background:var(--brand-soft);color:#B23F16}
.s-badge-accent{background:var(--accent-soft);color:#0B7A6C}
.s-badge-lime{background:rgba(205,242,74,.35);color:#4A5A0B}
.s-badge-plain{background:var(--bg-alt);color:var(--text-2)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--ink);color:var(--dtext)}
.section-dark .sec-title{color:#fff}
.section-dark .sec-sub{color:var(--dtext-2)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--brand)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:block}
.sec-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3;color:var(--ink);margin-top:12px;letter-spacing:-.01em}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:1rem;line-height:1.85}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 68px;background:var(--bg)}
.hero::before{content:"";position:absolute;width:760px;height:760px;border:1px solid rgba(242,92,42,.22);border-radius:50%;right:-300px;top:-360px;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(18,20,28,.13) 1.5px,transparent 1.5px);background-size:28px 28px;-webkit-mask-image:radial-gradient(440px 340px at 80% 20%,#000 0%,transparent 72%);mask-image:radial-gradient(440px 340px at 80% 20%,#000 0%,transparent 72%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-title{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;line-height:1.22;letter-spacing:-.01em;color:var(--ink)}
.hero-title em{font-style:normal;position:relative;white-space:nowrap}
.hero-title em::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:9px;background:var(--brand-soft);z-index:-1}
.hero-sub{margin-top:22px;font-size:1.05rem;color:var(--text-2);max-width:560px;line-height:1.85}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-stats{margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;border-top:1px solid var(--line);padding-top:28px}
.hero-stat b{display:block;font-size:1.6rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.hero-stat b i{font-style:normal;font-size:.8rem;font-weight:600;color:var(--text-3);margin-left:3px}
.hero-stat span{display:block;font-size:.85rem;color:var(--text-3);margin-top:4px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2)}
.hero-media-tag{position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px}
.hero-media-tag b{font-size:1.35rem;color:var(--brand);font-variant-numeric:tabular-nums;font-weight:800}
.hero-media-tag span{font-size:.8rem;color:var(--text-2);line-height:1.4;max-width:96px}

/* ---------- 信任条 ---------- */
.trust{padding:34px 0;background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-label{font-size:13px;color:var(--text-3);margin-bottom:18px;letter-spacing:.06em}
.trust-list{display:flex;flex-wrap:wrap;gap:14px 40px;align-items:center}
.trust-list span{font-size:15px;font-weight:600;color:#9AA0AE;filter:grayscale(1);transition:color .25s ease}
.trust-list span:hover{color:var(--brand);filter:none}

/* ---------- 卖点 ---------- */
.feature-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.f-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,92,42,.3)}
.f-card-media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt)}
.f-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.f-card:hover .f-card-media img{transform:scale(1.03)}
.f-card-body{padding:26px 28px 30px}
.f-card-body h3{font-size:1.25rem;font-weight:700;color:var(--ink);margin-bottom:10px}
.f-card-body p{color:var(--text-2);font-size:.95rem}
.f-icon{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);font-weight:800;font-size:15px;margin-bottom:16px;font-variant-numeric:tabular-nums}
.f-card.mini .f-card-body{padding:24px 26px 26px}
.f-card.mini h3{font-size:1.05rem}
.f-card.mini p{font-size:.9rem}
.f-list{margin-top:14px;display:grid;gap:8px}
.f-list li{position:relative;padding-left:18px;font-size:.9rem;color:var(--text-2)}
.f-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- 场景演示 ---------- */
.showcase-row{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:84px}
.showcase-row:last-child{margin-bottom:0}
.showcase-row.reverse .showcase-media{order:2}
.showcase-media{position:relative}
.showcase-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);box-shadow:var(--sh-2)}
.showcase-index{position:absolute;top:-14px;left:-10px;font-size:2.6rem;font-weight:800;color:var(--brand);opacity:.22;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.showcase-body h3{font-size:1.45rem;font-weight:700;color:var(--ink);margin-bottom:14px}
.showcase-body p{color:var(--text-2);margin-bottom:18px}
.showcase-list{display:grid;gap:12px;margin-bottom:26px}
.showcase-list li{position:relative;padding-left:26px;color:var(--text-2);font-size:.95rem}
.showcase-list li::before{content:"";position:absolute;left:0;top:.55em;width:14px;height:2px;background:var(--accent);border-radius:2px}

/* ---------- 证据 ---------- */
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.proof-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);border-top:3px solid var(--accent);transition:transform .25s ease,box-shadow .25s ease}
.proof-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.proof-card b{display:block;font-size:2rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2}
.proof-card b i{font-style:normal;font-size:.82rem;color:var(--text-3);font-weight:600;margin-left:4px}
.proof-card span{display:block;margin-top:8px;font-size:.9rem;color:var(--text-2)}
.proof-bottom{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--r-card);padding:30px 30px 26px;box-shadow:var(--sh-1)}
.quote-card .qmark{font-size:3rem;line-height:1;color:var(--accent);opacity:.35;font-family:Georgia,serif}
.quote-card p{margin-top:6px;color:var(--text-2);font-size:.95rem}
.quote-card cite{display:block;margin-top:18px;font-style:normal;font-size:.85rem;color:var(--text-3)}
.timeline{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1)}
.timeline li{display:flex;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line)}
.timeline li:last-child{border-bottom:0}
.timeline .t-no{font-size:.85rem;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;flex:0 0 26px;padding-top:3px}
.timeline h4{font-size:1rem;font-weight:600;color:var(--ink);margin-bottom:2px}
.timeline p{font-size:.88rem;color:var(--text-3)}

/* ---------- 方案 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px 28px 30px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.price-card.is-featured{border-color:var(--brand);border-width:1.5px;box-shadow:0 18px 36px -22px rgba(242,92,42,.65)}
.price-card.is-featured::before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:var(--brand);border-radius:15px 15px 0 0}
.price-tag{position:absolute;top:20px;right:22px}
.price-card h3{font-size:1.2rem;font-weight:700;color:var(--ink)}
.price-role{margin-top:6px;font-size:.88rem;color:var(--text-3)}
.price-amount{margin:24px 0 6px;font-variant-numeric:tabular-nums}
.price-amount b{font-size:1.75rem;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.price-amount i{font-style:normal;font-size:.85rem;color:var(--text-3);margin-left:6px}
.price-note{font-size:.82rem;color:var(--text-3);margin-bottom:22px}
.price-list{display:grid;gap:11px;margin-bottom:28px;flex:1}
.price-list li{position:relative;padding-left:24px;font-size:.9rem;color:var(--text-2)}
.price-list li::before{content:"";position:absolute;left:0;top:.6em;width:13px;height:7px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.s-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.s-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,92,42,.3)}
.card-media{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--bg-alt);border-radius:0}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.s-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:1.05rem;font-weight:700;line-height:1.55;color:var(--ink)}
.card-title a{transition:color .2s ease}
.card-title a:hover{color:var(--brand)}
.card-text{font-size:.9rem;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--text-3)}
.card-meta a{color:var(--brand);font-weight:600}
.card-meta a:hover{color:var(--brand-dark)}
.news-empty{background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:64px 24px;text-align:center;display:grid;justify-items:center;gap:16px}
.news-empty-mark{width:64px;height:64px;border-radius:50%;border:1px solid var(--line);position:relative}
.news-empty-mark::after{content:"";position:absolute;inset:14px;border-radius:50%;border:2px solid var(--brand);border-right-color:transparent;border-bottom-color:transparent;transform:rotate(-40deg)}
.news-empty p{color:var(--text-2);font-size:.95rem}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;align-items:start}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease}
.faq-item.is-open{border-color:rgba(242,92,42,.45);box-shadow:var(--sh-2)}
.faq-q{width:100%;min-height:56px;display:flex;align-items:center;gap:14px;padding:14px 20px;background:none;border:0;text-align:left;cursor:pointer;font-size:.98rem;font-weight:600;color:var(--ink);line-height:1.6}
.faq-q .q-no{font-size:.8rem;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;flex:0 0 22px}
.faq-q .q-txt{flex:1}
.faq-q .q-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
.faq-q .q-icon::before,.faq-q .q-icon::after{content:"";position:absolute;background:var(--text-3);border-radius:2px;transition:transform .28s ease,background .2s ease}
.faq-q .q-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-q .q-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .q-icon::before{background:var(--brand)}
.faq-item.is-open .q-icon::after{transform:rotate(90deg) scaleY(0);background:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-a p{padding:0 20px 22px 56px;font-size:.92rem;color:var(--text-2);line-height:1.85}
.faq-item.is-open .faq-a{max-height:340px}

/* ---------- 底部 CTA 与表单 ---------- */
.cta-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start}
.cta-title{font-size:clamp(1.7rem,3vw,2.3rem);font-weight:700;color:#fff;line-height:1.32;letter-spacing:-.01em}
.cta-desc{margin-top:18px;color:var(--dtext-2);font-size:.96rem}
.cta-contacts{margin-top:32px;display:grid;gap:14px}
.cta-contacts li{display:flex;align-items:flex-start;gap:12px;color:var(--dtext);font-size:.95rem}
.cta-contacts .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);margin-top:11px;flex:0 0 8px}
.cta-contacts small{display:block;color:var(--dtext-2);font-size:.82rem}
.form-card{background:#fff;border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-2)}
.form-card h3{font-size:1.15rem;font-weight:700;color:var(--ink);margin-bottom:6px}
.form-card .form-hint{font-size:.85rem;color:var(--text-3);margin-bottom:22px}
.form-row{display:grid;gap:8px;margin-bottom:18px}
.form-row label{font-size:.86rem;font-weight:600;color:var(--text-2)}
.form-row label .req{color:var(--brand);margin-left:3px}
.form-row input,.form-row textarea{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 14px;font-size:.95rem;transition:border-color .2s ease,box-shadow .2s ease}
.form-row input::placeholder,.form-row textarea::placeholder{color:#B4B9C4}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(242,92,42,.12)}
.form-row textarea{min-height:104px;resize:vertical}
.form-ok{margin-top:16px;display:flex;align-items:center;gap:9px;color:var(--accent);font-size:.88rem;font-weight:600}
.form-ok::before{content:"";width:16px;height:8px;border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--dtext-2);padding:76px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:inline-flex;align-items:center;gap:11px;color:#fff;font-size:19px;font-weight:800;margin-bottom:16px}
.site-footer p{font-size:.88rem;line-height:1.9;color:var(--dtext-2)}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{position:relative;font-size:.88rem;color:var(--dtext-2);transition:color .2s ease,padding-left .2s ease}
.footer-col a::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:0;background:var(--brand);transition:height .2s ease}
.footer-col a:hover{color:#fff;padding-left:12px}
.footer-col a:hover::before{height:14px}
.footer-info li{display:flex;gap:10px;font-size:.88rem;margin-bottom:12px}
.footer-info b{color:#fff;font-weight:600;flex:0 0 62px}
.footer-bottom{border-top:1px solid var(--line-dark);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;font-size:.82rem;color:var(--dtext-2)}
.footer-bottom a:hover{color:#fff}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:24px;bottom:24px;z-index:90;display:flex;align-items:center;gap:10px;opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease,visibility .3s}
.float-cta.is-show{opacity:1;visibility:visible;transform:none}
.to-top{width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);cursor:pointer;display:grid;place-items:center;transition:transform .2s ease,border-color .2s ease}
.to-top:hover{transform:translateY(-2px);border-color:var(--brand)}
.to-top i{display:block;width:10px;height:10px;border-left:2px solid var(--ink);border-top:2px solid var(--ink);transform:rotate(45deg);margin-top:4px}

/* ---------- 抽屉 ---------- */
.mobile-drawer{position:fixed;inset:0;z-index:130;background:rgba(18,20,28,.55);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease}
.mobile-drawer.is-open{opacity:1;visibility:visible}
.mobile-panel{position:absolute;top:0;right:0;bottom:0;width:min(86vw,340px);background:#fff;padding:22px 22px 32px;transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;display:flex;flex-direction:column;gap:6px}
.mobile-drawer.is-open .mobile-panel{transform:none}
.mobile-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.drawer-close::before,.drawer-close::after{content:"";position:absolute;left:50%;top:50%;width:16px;height:2px;background:var(--ink);border-radius:2px}
.drawer-close::before{transform:translate(-50%,-50%) rotate(45deg)}
.drawer-close::after{transform:translate(-50%,-50%) rotate(-45deg)}
.mobile-panel a.m-link{padding:14px 12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--text-2);border-bottom:1px solid var(--line)}
.mobile-panel a.m-link:hover{background:var(--bg-alt);color:var(--ink)}
.mobile-panel a.m-link.is-active{color:var(--brand)}
.mobile-panel .s-btn{margin-top:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .container{padding:0 24px}
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .nav-menu{display:none}
  .nav-actions .s-btn{display:none}
  .nav-toggle{display:block}
  .hero{padding:56px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:2}
  .hero-media-tag{left:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px 18px}
  .feature-layout{grid-template-columns:1fr}
  .feature-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .showcase-row{grid-template-columns:1fr;gap:32px;margin-bottom:64px}
  .showcase-row.reverse .showcase-media{order:0}
  .proof-grid{grid-template-columns:repeat(2,1fr)}
  .proof-bottom{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid{grid-template-columns:1fr}
  .cta-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .topbar-tip{display:none}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px 14px}
  .hero-media-tag{position:static;margin-top:14px;left:0;display:inline-flex}
  .hero-media img{aspect-ratio:16/10}
  .feature-side{grid-template-columns:1fr}
  .f-card-body{padding:18px 18px 22px}
  .f-card.mini .f-card-body{padding:18px}
  .proof-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .faq-a p{padding:0 18px 20px 18px}
  .float-cta{right:0;left:0;bottom:0;gap:0;padding:0;flex-direction:row-reverse;justify-content:space-between;background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 22px -18px rgba(18,20,28,.7)}
  .float-cta.is-show{display:flex}
  .float-cta .s-btn{flex:1;height:56px;border-radius:0;margin:0}
  .to-top{width:56px;height:56px;border-radius:0;border:0;border-left:1px solid var(--line);box-shadow:none}
  .site-footer{padding-bottom:56px}
  .footer-bottom{padding-bottom:80px}
}
@media (min-width:1440px){
  .hero::before{right:-220px}
}

/* roulang page: category1 */
:root{
  --orange:#F25C2A;
  --orange-dark:#D9481C;
  --teal:#12A594;
  --lime:#CDF24A;
  --ink:#12141C;
  --ink-2:#232838;
  --bg:#F6F4EF;
  --bg-alt:#EFECE4;
  --card:#FFFFFF;
  --text:#16181D;
  --muted:#59606F;
  --faint:#8A90A0;
  --ltext:#F2F1EC;
  --lmuted:#A9AEBF;
  --border:#E3DFD6;
  --border-dark:rgba(255,255,255,.12);
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,20,28,.06);
  --sh-2:0 14px 30px -14px rgba(18,20,28,.24);
  --sec:96px;
  --container:1240px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:1rem;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--orange)}
h1,h2,h3,h4{margin:0;font-family:var(--font);color:var(--text);letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;line-height:1.22}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3}
h3{font-size:1.25rem;font-weight:700;line-height:1.45}
h4{font-size:1.05rem;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit;font-size:1rem}
.foundation-reset-fix{all:revert}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-alt)}
.section-tight{padding:64px 0}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink);
  color:var(--ltext);
  font-size:13px;
  line-height:38px;
  height:38px;
  overflow-x:auto;
  white-space:nowrap;
}
.topbar .topbar-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-width:max-content;
}
.topbar .top-domain{color:#fff;font-weight:600;letter-spacing:.02em}
.topbar .top-hint{color:var(--lmuted)}
.topbar .top-links{margin-left:auto;display:flex;align-items:center;gap:14px}
.topbar .top-links a{color:var(--lmuted)}
.topbar .top-links a:hover{color:#fff}
.topbar .divider{width:1px;height:14px;background:rgba(255,255,255,.22)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,20,28,.4)}
.nav-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
  transition:height .2s ease;
}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:30px;height:30px;flex:0 0 auto;border-radius:9px;
  background:linear-gradient(135deg,var(--orange),#FF8A4C);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 8px 8px 8px;
  border:1.5px solid rgba(255,255,255,.9);border-radius:50%;
  border-right-color:transparent;transform:rotate(-35deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text>span{font-size:1.08rem;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.brand-text small{font-size:.72rem;color:var(--faint);letter-spacing:.12em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-menu a{
  position:relative;
  padding:10px 12px;
  font-size:.95rem;
  color:var(--muted);
  font-weight:500;
  border-radius:8px;
}
.nav-menu a:hover{color:var(--text);background:rgba(18,20,28,.04)}
.nav-menu a.is-active{color:var(--orange);font-weight:700}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--orange);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--border);
  border-radius:var(--r-btn);
  background:#fff;
  position:relative;
}
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after{
  position:absolute;left:12px;width:20px;height:2px;background:var(--text);
  border-radius:2px;content:"";transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle i{top:21px;border:none}
.nav-toggle i::before{top:-6px;left:0}
.nav-toggle i::after{top:6px;left:0}
body.nav-open .nav-toggle i{background:transparent}
body.nav-open .nav-toggle i::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle i::after{transform:translateY(-6px) rotate(-45deg)}
body.nav-open::after{
  content:"";position:fixed;inset:0;background:rgba(18,20,28,.45);z-index:70;
}

/* ---------- 按钮 ---------- */
.s-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;
  border-radius:var(--r-btn);
  font-size:.97rem;font-weight:600;
  border:1.5px solid transparent;
  transition:transform .16s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.s-btn:hover{transform:translateY(-1px)}
.s-btn:active{transform:translateY(1px)}
.s-btn:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.s-btn-primary{background:var(--orange);color:#fff;box-shadow:0 8px 18px -12px rgba(242,92,42,.9)}
.s-btn-primary:hover{background:var(--orange-dark);color:#fff}
.s-btn-ghost{border-color:var(--text);color:var(--text);background:transparent}
.s-btn-ghost:hover{background:rgba(18,20,28,.05);color:var(--text);border-color:var(--text)}
.s-btn-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.s-btn-light:hover{background:rgba(255,255,255,.1);color:#fff;border-color:#fff}
.s-btn-sm{padding:10px 18px;font-size:.9rem}
.s-btn[disabled]{opacity:.45;pointer-events:none}
.s-btn i{font-size:.86em}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(18,20,28,.06);color:var(--muted);
}
.badge-orange{background:rgba(242,92,42,.12);color:var(--orange-dark)}
.badge-teal{background:rgba(18,165,148,.14);color:#0B7C6F}
.badge-lime{background:rgba(205,242,74,.5);color:#4C6314}
.badge-light{background:rgba(255,255,255,.14);color:#fff}

/* ---------- 区块标题 ---------- */
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--muted);font-size:1.02rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:.8rem;font-weight:700;letter-spacing:.14em;color:var(--orange);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);border-radius:2px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:76px 0 60px;
  background:var(--bg);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;
  width:760px;height:760px;border-radius:50%;
  border:1px solid rgba(242,92,42,.22);
  top:-320px;right:-200px;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(18,20,28,.10) 1.5px,transparent 1.5px);
  background-size:26px 26px;
  opacity:.5;
  mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
  -webkit-mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:56px;
  align-items:center;
}
.hero h1{margin-bottom:20px}
.hero h1 span{color:var(--orange)}
.hero-sub{
  font-size:1.08rem;color:var(--muted);max-width:560px;margin-bottom:30px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:20px;box-shadow:var(--sh-2);
}
.hero-float{
  position:absolute;left:-18px;bottom:26px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--sh-2);
  display:flex;align-items:center;gap:14px;
}
.hero-float b{font-size:1.5rem;font-weight:800;color:var(--orange);font-variant-numeric:tabular-nums;line-height:1}
.hero-float small{display:block;font-size:.78rem;color:var(--faint);margin-top:4px}

/* ---------- 数据带 ---------- */
.stat-band{padding:0 0 8px}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.stat-item{padding:28px 26px;border-right:1px solid var(--border)}
.stat-item:last-child{border-right:none}
.stat-item .num{
  font-size:2.1rem;font-weight:800;color:var(--ink);line-height:1.1;
  font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:4px;
}
.stat-item .num em{font-style:normal;font-size:1rem;font-weight:600;color:var(--orange)}
.stat-item p{font-size:.9rem;color:var(--muted);margin-top:8px;line-height:1.65}
.stat-item i{color:var(--teal);font-size:1rem;margin-bottom:10px;display:block}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,92,42,.3)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:1.06rem}
.card-body p{font-size:.92rem;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--border);
  display:flex;align-items:center;justify-content:space-between;
  font-size:.82rem;color:var(--faint);
}
.card-foot a{font-weight:600;color:var(--orange);display:inline-flex;align-items:center;gap:6px}
.card-foot a:hover{color:var(--orange-dark)}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:flow}
.flow-item{
  position:relative;padding:34px 26px 30px;
  background:#fff;border:1px solid var(--border);border-right:none;
}
.flow-item:first-child{border-radius:var(--r-card) 0 0 var(--r-card)}
.flow-item:last-child{border-radius:0 var(--r-card) var(--r-card) 0;border-right:1px solid var(--border)}
.flow-item .step{
  font-size:.82rem;font-weight:800;letter-spacing:.1em;color:var(--orange);
  font-variant-numeric:tabular-nums;display:block;margin-bottom:14px;
}
.flow-item h3{font-size:1.05rem;margin-bottom:10px}
.flow-item p{font-size:.9rem;color:var(--muted);line-height:1.75}

/* ---------- 图文交替 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-bottom:72px;
}
.split:last-child{margin-bottom:0}
.split.reverse .split-media{order:2}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.split-body h3{font-size:1.5rem;margin-bottom:14px}
.split-body>p{color:var(--muted);margin-bottom:22px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:11px 0;border-bottom:1px solid var(--border);
  font-size:.95rem;color:var(--text);
}
.check-list li:last-child{border-bottom:none}
.check-list i{color:var(--teal);margin-top:6px;font-size:.85rem}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease}
.faq-item.is-open{border-color:rgba(242,92,42,.35);box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:16px 22px;
  background:none;border:none;text-align:left;
  font-size:1rem;font-weight:600;color:var(--text);
}
.faq-q .no{font-size:.8rem;font-weight:800;color:var(--orange);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.faq-q .ico{
  margin-left:auto;width:26px;height:26px;flex:0 0 auto;border-radius:50%;
  background:rgba(18,20,28,.05);position:relative;
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:7px;top:12px;width:12px;height:2px;background:var(--muted);border-radius:2px;
  transition:transform .22s ease,background .22s ease;
}
.faq-q .ico::after{transform:rotate(90deg)}
.faq-item.is-open .faq-q .ico{background:rgba(242,92,42,.14)}
.faq-item.is-open .faq-q .ico::before,
.faq-item.is-open .faq-q .ico::after{background:var(--orange)}
.faq-item.is-open .faq-q .ico::after{transform:rotate(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 22px 62px;color:var(--muted);font-size:.95rem;line-height:1.85}

/* ---------- 底部 CTA ---------- */
.cta{
  background:var(--ink);color:var(--ltext);
  padding:80px 0;position:relative;overflow:hidden;
}
.cta::before{
  content:"";position:absolute;width:620px;height:620px;border-radius:50%;
  border:1px solid rgba(242,92,42,.28);right:-180px;bottom:-320px;pointer-events:none;
}
.cta-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;position:relative;z-index:2}
.cta h2{color:#fff;margin-bottom:16px}
.cta p.lead{color:var(--lmuted);margin-bottom:26px;max-width:460px}
.cta-info li{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--border-dark);font-size:.93rem}
.cta-info li:last-child{border-bottom:none}
.cta-info b{color:#fff;font-weight:600;min-width:78px;flex:0 0 auto}
.cta-info span{color:var(--lmuted)}
.form-card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--border-dark);
  border-radius:var(--r-card);
  padding:30px;
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:7px}
.field label{font-size:.86rem;color:var(--lmuted)}
.field label .req{color:var(--orange);margin-left:4px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.05);color:#fff;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.35)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);
  box-shadow:0 0 0 3px rgba(242,92,42,.16);
  background:rgba(255,255,255,.08);
}
.field textarea{resize:vertical;min-height:96px}
.form-note{font-size:.85rem;color:var(--lmuted);margin-top:12px;line-height:1.7}
.form-note.is-ok{color:var(--lime)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--lmuted);padding:72px 0 0;font-size:.92rem}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid var(--border-dark);
}
.footer-brand{display:flex;align-items:center;gap:11px;font-size:1.1rem;font-weight:800;color:#fff;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:.98rem;margin-bottom:18px}
.footer-col p{line-height:1.85;color:var(--lmuted);max-width:340px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul li a{color:var(--lmuted);position:relative;padding-left:0;transition:padding-left .2s ease,color .2s ease}
.footer-col ul li a::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:2px;background:var(--orange);
  transform:translateY(-50%);transition:width .2s ease;
}
.footer-col ul li a:hover{color:#fff;padding-left:14px}
.footer-col ul li a:hover::before{width:9px}
.footer-info li{display:flex;flex-direction:column;gap:3px;margin-bottom:14px}
.footer-info b{color:#fff;font-weight:600;font-size:.88rem}
.footer-info span{color:var(--lmuted);font-size:.86rem;line-height:1.7}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:23px 0;font-size:.84rem;color:rgba(169,174,191,.85);flex-wrap:wrap;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta .s-btn{border-radius:var(--r-pill);box-shadow:0 16px 28px -16px rgba(242,92,42,.9)}
.to-top{
  width:48px;height:48px;border-radius:50%;
  border:1px solid var(--border);background:#fff;color:var(--text);
  box-shadow:var(--sh-2);display:flex;align-items:center;justify-content:center;
  transition:transform .18s ease,border-color .18s ease,color .18s ease;
}
.to-top:hover{transform:translateY(-2px);border-color:var(--orange);color:var(--orange)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec:84px}
  .card-grid{grid-template-columns:repeat(3,1fr)}
  .nav-menu a{padding:10px 9px;font-size:.9rem}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .container{padding:0 22px}
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:92px 22px 32px;margin:0;
    transform:translateX(105%);transition:transform .3s ease;
    box-shadow:-18px 0 44px -22px rgba(18,20,28,.4);
    overflow-y:auto;z-index:80;
  }
  body.nav-open .nav-menu{transform:translateX(0)}
  .nav-menu a{padding:14px 12px;font-size:1rem;border-radius:10px}
  .nav-menu a.is-active::after{display:none}
  .nav-menu a.is-active{background:rgba(242,92,42,.09)}
  .nav-toggle{display:block}
  .nav-actions .s-btn-sm{display:none}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:2}
  .hero-float{left:14px;bottom:-14px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-bottom:1px solid var(--border)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:16px}
  .flow-item{border:1px solid var(--border)!important;border-radius:var(--r-card)!important}
  .split{grid-template-columns:1fr;gap:32px;margin-bottom:56px}
  .split.reverse .split-media{order:0}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .card-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-a p{padding-left:22px}
  .faq-q{padding:16px 18px;gap:12px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .card-body{padding:18px}
  h1{font-size:clamp(1.9rem,8vw,2.4rem)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .s-btn{width:100%}
  .stat-item{padding:22px 18px}
  .stat-item .num{font-size:1.7rem}
  .float-cta{
    right:0;left:0;bottom:0;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.94);border-top:1px solid var(--border);
    backdrop-filter:blur(6px);justify-content:space-between;
  }
  .float-cta .s-btn{flex:1;min-height:44px}
  .to-top{width:44px;height:44px}
  body{padding-bottom:64px}
}

/* roulang page: article */
:root{
  --c-orange:#F25C2A;
  --c-orange-dark:#D9481C;
  --c-teal:#12A594;
  --c-teal-dark:#0B7C6F;
  --c-lime:#CDF24A;
  --c-ink:#12141C;
  --c-ink-2:#232838;
  --c-bg:#F6F4EF;
  --c-bg-alt:#EFECE4;
  --c-card:#FFFFFF;
  --c-text:#16181D;
  --c-text-2:#59606F;
  --c-text-3:#8A90A0;
  --c-border:#E3DFD6;
  --c-dark-text:#F2F1EC;
  --c-dark-text-2:#A9AEBF;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(18,20,28,.06);
  --shadow-md:0 14px 30px -14px rgba(18,20,28,.24);
  --shadow-lg:0 26px 60px -28px rgba(18,20,28,.34);
  --sec-pad:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--c-orange);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-ink);color:#fff;font-size:13px;height:38px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:38px;overflow-x:auto;white-space:nowrap}
.topbar-inner::-webkit-scrollbar{display:none}
.topbar-domain{color:var(--c-orange);font-weight:600;letter-spacing:.02em}
.topbar-tip{color:var(--c-dark-text-2)}
.topbar-links{display:flex;align-items:center;gap:12px}
.topbar-links a{color:#fff;opacity:.86}
.topbar-links a:hover{color:var(--c-orange)}
.topbar-links span{color:rgba(255,255,255,.3)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-border);
  transition:box-shadow .25s ease,height .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px -18px rgba(18,20,28,.45)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:62px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  position:relative;width:32px;height:32px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-orange) 0%,var(--c-orange-dark) 52%,var(--c-teal) 100%);
  display:block;flex:0 0 auto;box-shadow:0 8px 16px -10px rgba(242,92,42,.9);
}
.brand-mark::after{
  content:"";position:absolute;left:7px;top:7px;right:7px;bottom:7px;
  border:2px solid rgba(255,255,255,.92);border-radius:50%;
  border-top-color:transparent;border-right-color:transparent;transform:rotate(-35deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text > span{font-size:1.06rem;font-weight:800;letter-spacing:-.015em;color:var(--c-text)}
.brand-text small{font-size:11px;color:var(--c-text-3);letter-spacing:.16em;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.nav-menu a{
  position:relative;display:block;padding:9px 13px;border-radius:8px;
  font-size:.94rem;color:var(--c-text-2);white-space:nowrap;
}
.nav-menu a:hover{color:var(--c-text);background:var(--c-bg-alt)}
.nav-menu a.is-active{color:var(--c-orange-dark);font-weight:600}
.nav-menu a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  border-radius:2px;background:var(--c-orange);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);align-items:center;justify-content:center}
.nav-toggle i{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:.2s}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:.2s}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}
.nav-menu-cta{display:none}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(18,20,28,.48);opacity:0;visibility:hidden;
  transition:.25s;z-index:55;
}
.nav-backdrop.is-open{opacity:1;visibility:visible}

/* ---------- 按钮 / 徽章 ---------- */
.s-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);font-size:.95rem;font-weight:600;
  border:1.5px solid transparent;line-height:1.2;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.s-btn:active{transform:translateY(1px)}
.s-btn-primary{background:var(--c-orange);color:#fff;box-shadow:0 12px 24px -14px rgba(242,92,42,.95)}
.s-btn-primary:hover{background:var(--c-orange-dark);color:#fff;transform:translateY(-1px)}
.s-btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.s-btn-ghost:hover{background:rgba(18,20,28,.06);transform:translateY(-1px)}
.s-btn-light{background:#fff;color:var(--c-ink)}
.s-btn-light:hover{background:var(--c-bg-alt);transform:translateY(-1px);color:var(--c-ink)}
.s-btn-outline-light{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.s-btn-outline-light:hover{background:rgba(255,255,255,.1);border-color:#fff;transform:translateY(-1px);color:#fff}
.s-btn-sm{padding:9px 16px;font-size:.875rem;border-radius:9px}
.s-btn-block{width:100%}
.s-btn[disabled],.s-btn.is-disabled{opacity:.45;pointer-events:none;transform:none}
.s-badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.6;
}
.s-badge-orange{background:rgba(242,92,42,.12);color:var(--c-orange-dark)}
.s-badge-teal{background:rgba(18,165,148,.14);color:var(--c-teal-dark)}
.s-badge-lime{background:rgba(205,242,74,.6);color:#4C5B0C}
.s-badge-dark{background:rgba(255,255,255,.14);color:#fff}

/* ---------- 区块基础 ---------- */
.sec{padding:var(--sec-pad) 0}
.sec-alt{background:var(--c-bg-alt)}
.sec-white{background:#fff}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.28}
.sec-head p{margin-top:14px;color:var(--c-text-2);font-size:1.02rem}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.18em;color:var(--c-orange-dark);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--c-orange)}
.rule-arc{position:relative;overflow:hidden}
.rule-arc::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(242,92,42,.22);right:-200px;top:-260px;pointer-events:none;
}
.dot-grid{
  position:absolute;width:180px;height:120px;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(18,165,148,.5) 1.5px,transparent 1.6px);
  background-size:20px 20px;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;background:var(--c-bg)}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-text-3)}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-orange-dark)}
.breadcrumb .sep{color:var(--c-text-3);opacity:.7}
.breadcrumb .current{color:var(--c-text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章首屏 ---------- */
.article-hero{padding:20px 0 0;background:var(--c-bg);position:relative}
.article-hero .dot-grid{top:34px;right:6%;opacity:.35}
.article-title{
  font-size:clamp(2rem,4.4vw,3.2rem);font-weight:800;line-height:1.24;letter-spacing:-.015em;
  max-width:920px;margin:16px 0 20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:.88rem;color:var(--c-text-2)}
.article-meta .m-item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-teal);font-size:.86rem}
.article-meta .divider{width:1px;height:14px;background:var(--c-border)}
.article-cover{
  margin:32px 0 0;border-radius:var(--r-card);overflow:hidden;background:var(--c-bg-alt);
  aspect-ratio:16/9;box-shadow:var(--shadow-md);
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- 正文布局 ---------- */
.article-main{padding:56px 0 88px;background:var(--c-bg)}
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 268px;gap:56px;justify-content:center;align-items:start}
.article-body{
  font-size:1.0625rem;line-height:1.9;color:#242832;min-width:0;
  overflow-wrap:break-word;word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:clamp(1.4rem,2.3vw,1.8rem);font-weight:700;line-height:1.36;
  margin:46px 0 18px;padding-top:6px;scroll-margin-top:110px;
}
.article-body h2::before{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--c-orange);margin-bottom:14px}
.article-body h3{font-size:1.2rem;font-weight:700;margin:32px 0 12px;scroll-margin-top:110px}
.article-body h4{font-size:1.05rem;font-weight:600;margin:24px 0 10px}
.article-body p{margin:0 0 1.25em}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.55em}
.article-body ul li::marker{color:var(--c-orange)}
.article-body ol li::marker{color:var(--c-orange);font-weight:700}
.article-body strong{font-weight:700;color:var(--c-ink)}
.article-body a{color:var(--c-orange-dark);border-bottom:1px solid rgba(217,72,28,.35)}
.article-body a:hover{border-bottom-color:var(--c-orange-dark)}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;background:var(--c-bg-alt);
  border-left:4px solid var(--c-teal);border-radius:0 12px 12px 0;color:#3A4150;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);height:auto;margin:0 auto}
.article-body figure{margin:28px 0}
.article-body figcaption{font-size:.85rem;color:var(--c-text-3);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--c-border);margin:38px 0}
.article-body code{background:var(--c-bg-alt);padding:2px 7px;border-radius:6px;font-size:.92em}
.article-body pre{background:var(--c-ink);color:var(--c-dark-text);padding:18px 20px;border-radius:12px;overflow-x:auto;margin:24px 0}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:26px 0;border:1px solid var(--c-border);border-radius:12px}
.article-body table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:520px}
.article-body th,.article-body td{border-bottom:1px solid var(--c-border);padding:12px 16px;text-align:left}
.article-body th{background:var(--c-bg-alt);font-weight:700;color:var(--c-ink)}
.article-body tr:last-child td{border-bottom:0}

/* ---------- 目录 ---------- */
.article-toc{
  position:sticky;top:104px;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:20px 18px 18px;box-shadow:var(--shadow-sm);
}
.toc-title{font-size:.82rem;font-weight:700;letter-spacing:.16em;color:var(--c-text-3);margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow-y:auto}
.toc-list a{
  display:block;padding:7px 10px;font-size:.86rem;line-height:1.5;color:var(--c-text-2);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
}
.toc-list a.toc-sub{padding-left:22px;font-size:.82rem}
.toc-list a:hover{color:var(--c-ink);background:var(--c-bg-alt)}
.toc-list a.is-current{color:var(--c-orange-dark);border-left-color:var(--c-orange);background:rgba(242,92,42,.07);font-weight:600}
.toc-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;
  padding:11px 14px;border-radius:10px;background:var(--c-ink);color:#fff;font-size:.88rem;font-weight:600;
}
.toc-cta:hover{background:var(--c-orange);color:#fff}

/* ---------- 文末标签与分享 ---------- */
.article-foot{margin-top:52px;padding-top:28px;border-top:1px solid var(--c-border)}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:22px}
.tag-row .label{font-size:.85rem;color:var(--c-text-3);letter-spacing:.06em}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--c-border);font-size:.82rem;color:var(--c-text-2);
}
.tag:hover{border-color:rgba(242,92,42,.5);color:var(--c-orange-dark)}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.share-btn{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:10px;
  background:#fff;border:1px solid var(--c-border);font-size:.88rem;font-weight:600;color:var(--c-text-2);
}
.share-btn:hover{border-color:var(--c-ink);color:var(--c-ink);transform:translateY(-1px)}
.share-tip{font-size:.82rem;color:var(--c-teal-dark);opacity:0;transition:opacity .25s}
.share-tip.is-on{opacity:1}

/* ---------- 空态 ---------- */
.article-empty{
  max-width:620px;margin:0 auto;text-align:center;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);padding:56px 32px;box-shadow:var(--shadow-sm);
}
.article-empty .empty-mark{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;
  background:var(--c-bg-alt);border:1px solid var(--c-border);position:relative;
}
.article-empty .empty-mark::after{
  content:"";position:absolute;left:14px;top:14px;right:14px;bottom:14px;
  border:2px solid rgba(242,92,42,.5);border-radius:50%;border-bottom-color:transparent;
}
.article-empty h2{font-size:1.5rem;margin-bottom:12px}
.article-empty p{color:var(--c-text-2);margin-bottom:26px}

/* ---------- 相关阅读卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.article-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(242,92,42,.35)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-bg-alt)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.article-card:hover .card-media img{transform:scale(1.03)}
.card-media .card-badge{position:absolute;left:14px;top:14px}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:1.06rem;line-height:1.5;margin-bottom:10px}
.card-body p{font-size:.9rem;color:var(--c-text-2);line-height:1.75;margin-bottom:18px;flex:1 1 auto}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:var(--c-text-3);border-top:1px solid var(--c-border);padding-top:14px}
.card-meta .arrow{color:var(--c-orange);font-weight:700}

/* ---------- 支持信息带 ---------- */
.support-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.support-item{
  background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;
}
.support-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.support-item .icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,165,148,.12);color:var(--c-teal-dark);font-size:1.05rem;margin-bottom:16px;
}
.support-item h3{font-size:1.05rem;margin-bottom:10px}
.support-item p{font-size:.92rem;color:var(--c-text-2);line-height:1.8}

/* ---------- 深色 CTA ---------- */
.cta-sec{background:var(--c-ink);color:var(--c-dark-text);padding:88px 0;position:relative;overflow:hidden}
.cta-sec::before{
  content:"";position:absolute;width:620px;height:620px;border-radius:50%;
  border:1px solid rgba(242,92,42,.25);right:-240px;bottom:-320px;
}
.cta-sec::after{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(18,165,148,.22);left:-140px;top:-170px;
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-left h2{font-size:clamp(1.6rem,3vw,2.3rem);color:#fff;line-height:1.3}
.cta-left > p{margin-top:16px;color:var(--c-dark-text-2);font-size:1rem;line-height:1.85;max-width:460px}
.cta-list{margin-top:30px;display:flex;flex-direction:column;gap:14px}
.cta-list li{display:flex;gap:12px;align-items:flex-start;font-size:.94rem;color:var(--c-dark-text-2)}
.cta-list i{color:var(--c-lime);margin-top:5px;font-size:.8rem}
.cta-list b{color:#fff;font-weight:600}
.s-form{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-card);padding:28px 26px}
.s-form h3{font-size:1.1rem;color:#fff;margin-bottom:6px}
.s-form .form-note{font-size:.85rem;color:var(--c-dark-text-2);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{display:block;font-size:.85rem;color:var(--c-dark-text-2);margin-bottom:8px}
.field label .req{color:var(--c-orange);margin-left:4px}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;background:#fff;color:var(--c-text);
  border:1px solid transparent;font-size:.94rem;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#A5AAB8}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-orange);box-shadow:0 0 0 3px rgba(242,92,42,.18)}
.field.has-error input,.field.has-error textarea{border-color:var(--c-teal);box-shadow:0 0 0 3px rgba(18,165,148,.16)}
.form-msg{font-size:.85rem;margin-top:14px;display:flex;align-items:center;gap:8px}
.form-msg.ok{color:var(--c-lime)}
.form-msg.err{color:#7FE3D6}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--c-dark-text-2);padding:72px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(255,255,255,.06);left:-260px;top:-300px;
}
.footer-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:11px;color:#fff;font-size:1.1rem;font-weight:800;letter-spacing:-.015em;margin-bottom:18px}
.footer-col p{font-size:.92rem;line-height:1.85;max-width:330px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{font-size:.9rem;position:relative;padding-left:0;transition:padding-left .2s ease,color .2s ease}
.footer-col ul a:hover{color:#fff;padding-left:10px}
.footer-col ul a:hover::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:13px;background:var(--c-orange);border-radius:2px}
.footer-info li{display:flex;flex-direction:column;gap:3px;font-size:.9rem}
.footer-info b{color:#fff;font-weight:600}
.footer-bottom{
  position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:.82rem;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:70;display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta .s-btn{box-shadow:0 18px 32px -16px rgba(242,92,42,.95)}
.back-top{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--c-border);
  display:flex;align-items:center;justify-content:center;color:var(--c-text-2);box-shadow:var(--shadow-sm);
  transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.back-top:hover{color:var(--c-orange);border-color:rgba(242,92,42,.5);transform:translateY(-2px)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sec-pad:72px}
  .nav-menu{
    position:fixed;top:0;right:0;width:min(320px,86vw);height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:2px;padding:88px 20px 28px;transform:translateX(102%);
    transition:transform .3s ease;box-shadow:-24px 0 48px -24px rgba(18,20,28,.4);
    overflow-y:auto;z-index:65;
  }
  .nav-menu.is-open{transform:none}
  .nav-menu a{padding:14px 12px;font-size:1rem;border-bottom:1px solid var(--c-border);border-radius:0}
  .nav-menu a.is-active::after{left:12px;right:auto;width:26px;bottom:0}
  .nav-menu-cta{display:flex;margin-top:20px;border-bottom:0!important;padding:14px 18px!important;border-radius:10px!important;color:#fff!important}
  .nav-toggle{display:flex}
  .nav-actions .s-btn-primary{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-toc{position:static;order:-1;max-width:100%}
  .toc-list{max-height:none}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .support-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  :root{--sec-pad:56px}
  .container{padding:0 20px}
  .topbar-tip{display:none}
  .article-title{font-size:clamp(1.7rem,6vw,2.3rem)}
  .article-cover{margin-top:24px}
  .sec-head{margin-bottom:32px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .article-body{font-size:1rem}
  .article-body h2{margin-top:38px}
}
@media (max-width:640px){
  .float-cta{right:0;left:0;bottom:0;gap:0;padding:0;border-radius:0}
  .float-cta .s-btn{width:100%;border-radius:0;padding:17px 20px;padding-bottom:calc(17px + env(safe-area-inset-bottom))}
  .float-cta .back-top{display:none}
  .site-footer{padding-bottom:76px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .support-grid{grid-template-columns:1fr}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-foot{margin-top:40px}
  .s-form{padding:22px 18px}
}

/* roulang page: category2 */
:root{
  --c-primary:#F25C2A;
  --c-primary-dark:#D9481C;
  --c-teal:#12A594;
  --c-lime:#CDF24A;
  --c-ink:#12141C;
  --c-ink-2:#232838;
  --bg:#F6F4EF;
  --bg-alt:#EFECE4;
  --surface:#FFFFFF;
  --t1:#16181D;
  --t2:#59606F;
  --t3:#8A90A0;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --ink-text:#F2F1EC;
  --ink-text-2:#A9AEBF;
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(18,20,28,.06);
  --sh-2:0 14px 30px -14px rgba(18,20,28,.24);
  --sec-pad:96px;
  --container:1240px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"Oswald","Barlow Condensed","Arial Narrow","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:1rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,h5{margin:0;color:inherit;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(242,92,42,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:var(--sec-pad) 0;position:relative}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--c-ink);color:var(--ink-text)}
.section-dark .sec-head p{color:var(--ink-text-2)}

.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3}
.sec-head p{margin-top:14px;color:var(--t2);font-size:1rem}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:.8rem;letter-spacing:.18em;
  color:var(--c-primary);text-transform:uppercase;margin-bottom:14px;
}
.sec-eyebrow::before{content:"";width:26px;height:2px;background:var(--c-primary);display:block}
.section-dark .sec-eyebrow{color:var(--c-lime)}
.section-dark .sec-eyebrow::before{background:var(--c-lime)}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--c-ink);color:var(--ink-text);font-size:13px;height:38px}
.topbar-inner{display:flex;align-items:center;gap:18px;height:38px;white-space:nowrap;overflow-x:auto;scrollbar-width:none}
.topbar-inner::-webkit-scrollbar{display:none}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;font-family:var(--font-num)}
.topbar-tip{color:var(--ink-text-2)}
.topbar-links{margin-left:auto;display:flex;align-items:center;gap:12px}
.topbar-links a{color:var(--ink-text)}
.topbar-links a:hover{color:var(--c-primary)}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.22);display:block}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px -20px rgba(18,20,28,.55)}
.nav-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;position:relative;z-index:2}
.brand-mark{
  width:26px;height:26px;border-radius:50%;flex:0 0 26px;position:relative;
  background:conic-gradient(from 210deg,var(--c-primary),var(--c-teal),var(--c-lime),var(--c-primary));
}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:50%;background:#fff}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text>span{font-weight:800;font-size:1.05rem;letter-spacing:-.01em}
.brand-text small{font-size:.7rem;color:var(--t3);letter-spacing:.08em}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-menu a{position:relative;padding:6px 0;font-size:.95rem;color:var(--t2);white-space:nowrap}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--t1)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{color:var(--c-primary);font-weight:600}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;position:relative;z-index:2}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  align-items:center;justify-content:center;position:relative;z-index:3;
}
.nav-toggle i,.nav-toggle::before,.nav-toggle::after{
  content:"";display:block;width:20px;height:2px;background:var(--t1);border-radius:2px;
  position:absolute;left:11px;transition:transform .25s ease,opacity .2s ease;
}
.nav-toggle::before{transform:translateY(-6px)}
.nav-toggle::after{transform:translateY(6px)}
.site-header.nav-open .nav-toggle::before{transform:rotate(45deg)}
.site-header.nav-open .nav-toggle::after{transform:rotate(-45deg)}
.site-header.nav-open .nav-toggle i{opacity:0}

/* ---------- 按钮 ---------- */
.s-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:13px 24px;font-size:.95rem;font-weight:600;
  border:1.5px solid transparent;line-height:1;cursor:pointer;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.s-btn i{font-size:.85em}
.s-btn-primary{background:var(--c-primary);color:#fff}
.s-btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(242,92,42,.9)}
.s-btn-primary:active{transform:translateY(1px)}
.s-btn-outline{border-color:var(--t1);color:var(--t1);background:transparent}
.s-btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);background:#fff;transform:translateY(-1px)}
.s-btn-outline:active{transform:translateY(1px)}
.s-btn-light{border-color:rgba(255,255,255,.55);color:#fff;background:transparent}
.s-btn-light:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-1px)}
.s-btn-ghost{color:var(--c-primary);padding:10px 2px;border:0;background:none}
.s-btn-ghost::after{content:"";display:block;height:2px;background:linear-gradient(90deg,var(--c-primary),rgba(242,92,42,0));margin-top:6px;transform:scaleX(.4);transform-origin:left;transition:transform .25s ease}
.s-btn-ghost:hover::after{transform:scaleX(1)}
.s-btn-sm{padding:10px 18px;font-size:.875rem}
.s-btn-lg{padding:16px 30px;font-size:1rem}
.s-btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ---------- 首页首屏（叙事型） ---------- */
.hero-narrative{position:relative;background:var(--c-ink);color:var(--ink-text);overflow:hidden;display:flex;align-items:center;min-height:660px}
.hero-media{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;transform:scale(1.04)}
.hero-scrim{position:absolute;inset:0;background:linear-gradient(100deg,rgba(18,20,28,.86) 0%,rgba(18,20,28,.62) 48%,rgba(18,20,28,.48) 100%)}
.hero-narrative .container{position:relative;z-index:2}
.hero-inner{max-width:720px;padding:130px 0 150px}
.hero-narrative h1{
  font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;line-height:1.22;letter-spacing:-.01em;
  color:var(--ink-text);margin:16px 0 0;
}
.hero-sub{margin-top:22px;font-size:1.075rem;line-height:1.85;color:rgba(242,241,236,.82);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  font-size:.8rem;letter-spacing:.06em;color:var(--ink-text);
}
.hero-tag b{font-family:var(--font-num);color:var(--c-lime);font-weight:600}
.hero-card{
  position:absolute;right:28px;bottom:36px;z-index:3;width:310px;
  background:rgba(18,20,28,.92);border:1px solid var(--line-dark);border-radius:var(--r-card);
  padding:24px;color:var(--ink-text);
}
.hero-card h3{font-size:1.05rem;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.hero-card h3::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--c-primary);display:block}
.hero-card li{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--line-dark);font-size:.875rem;color:rgba(242,241,236,.86);line-height:1.7}
.hero-card li:first-of-type{border-top:0;padding-top:0}
.hero-card li b{font-family:var(--font-num);color:var(--c-primary);font-weight:600;letter-spacing:.04em;flex:0 0 24px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);padding:14px 0;flex-wrap:wrap}
.crumb a{color:var(--t2)}
.crumb a:hover{color:var(--c-primary)}
.crumb span.sep{color:var(--t3)}
.crumb strong{color:var(--t1);font-weight:600}

/* ---------- 数据带 ---------- */
.stats-band{background:var(--c-ink-2);color:var(--ink-text);padding:44px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{display:flex;flex-direction:column;gap:6px;padding-left:20px;border-left:2px solid rgba(255,255,255,.14)}
.stat:first-child{border-left-color:var(--c-primary)}
.stat-num{font-family:var(--font-num);font-size:2rem;font-weight:600;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums}
.stat-label{font-size:.875rem;color:var(--ink-text-2)}

/* ---------- 通用网格 ---------- */
.grid-x{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin:0}
.grid-x>.cell{min-width:0;width:auto;padding:0;flex:none}
.cell-12{grid-column:span 12}
.cell-6{grid-column:span 6}
.cell-4{grid-column:span 4}
.cell-3{grid-column:span 3}

/* ---------- 左右交替图文 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:52px 0;border-top:1px solid var(--line)}
.feature-row:first-of-type{border-top:0;padding-top:0}
.feature-row.reverse .feature-media{order:2}
.feature-row.reverse .feature-copy{order:1}
.feature-media{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--bg-alt);box-shadow:var(--sh-1)}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.feature-media:hover img{transform:scale(1.03)}
.feature-media .media-badge{
  position:absolute;left:16px;top:16px;background:rgba(18,20,28,.86);color:var(--ink-text);
  font-size:12px;padding:6px 12px;border-radius:999px;letter-spacing:.04em;
}
.feature-copy h3{font-size:1.25rem;font-weight:700;line-height:1.4}
.feature-copy .lead{margin-top:16px;color:var(--t2);line-height:1.9}
.check-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:26px;font-size:.95rem;color:var(--t1);line-height:1.8}
.check-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:10px;height:10px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,var(--c-lime),var(--c-teal));
}
.feature-copy .s-btn{margin-top:26px}

/* ---------- 步骤条 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:flow}
.flow-step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,92,42,.3)}
.flow-step .num{font-family:var(--font-num);font-size:2rem;font-weight:600;color:var(--c-primary);line-height:1;font-variant-numeric:tabular-nums}
.flow-step h3{margin-top:16px;font-size:1.05rem;font-weight:700}
.flow-step p{margin-top:10px;font-size:.9rem;color:var(--t2);line-height:1.8}
.flow-step::after{content:"";position:absolute;right:-30px;top:-30px;width:90px;height:90px;border-radius:50%;border:1px solid rgba(18,165,148,.22)}

/* ---------- 引用卡 ---------- */
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--c-teal);
  border-radius:var(--r-card);padding:30px;box-shadow:var(--sh-1);height:100%;
  display:flex;flex-direction:column;gap:18px;
}
.quote-card .mark{font-family:var(--font-num);font-size:3rem;line-height:.6;color:rgba(18,165,148,.35)}
.quote-card p{color:var(--t1);line-height:1.9}
.quote-card footer{font-size:.875rem;color:var(--t3);margin-top:auto}

/* ---------- FAQ ---------- */
.acc-list{display:grid;gap:14px}
.acc-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:border-color .2s ease}
.acc-item.is-open{border-color:rgba(242,92,42,.35)}
.acc-head{
  display:flex;align-items:center;gap:16px;width:100%;text-align:left;
  padding:0 22px;min-height:60px;font-size:1rem;font-weight:600;color:var(--t1);
}
.acc-head .idx{font-family:var(--font-num);color:var(--c-primary);font-size:.95rem;letter-spacing:.06em;flex:0 0 26px}
.acc-head .ico{margin-left:auto;flex:0 0 22px;height:22px;position:relative}
.acc-head .ico::before,.acc-head .ico::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s ease}
.acc-head .ico::before{left:0;top:10px;width:22px;height:2px}
.acc-head .ico::after{left:10px;top:0;width:2px;height:22px}
.acc-item.is-open .acc-head .ico::after{transform:scaleY(0)}
.acc-head:hover{color:var(--c-primary)}
.acc-head:focus-visible{outline:2px solid var(--c-primary);outline-offset:-3px}
.acc-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.acc-body p{padding:0 22px 22px 64px;color:var(--t2);line-height:1.85;font-size:.95rem}

/* ---------- CTA / 表单 ---------- */
.cta-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.3;color:var(--ink-text)}
.cta-copy p{margin-top:18px;color:var(--ink-text-2);line-height:1.9;max-width:460px}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:.95rem;color:rgba(242,241,236,.86)}
.cta-points li i{color:var(--c-lime);margin-top:.45em;font-size:.8rem}
.cta-meta{margin-top:34px;padding-top:24px;border-top:1px solid var(--line-dark);display:flex;flex-wrap:wrap;gap:26px}
.cta-meta div{display:flex;flex-direction:column;gap:4px}
.cta-meta b{font-size:.8rem;color:var(--t3);font-weight:600;letter-spacing:.08em}
.cta-meta span{font-size:.95rem;color:var(--ink-text)}

.form-card{background:var(--c-ink-2);border:1px solid var(--line-dark);border-radius:var(--r-card);padding:30px}
.form-row{margin-bottom:18px}
.form-row label{display:block;font-size:.875rem;color:var(--ink-text-2);margin-bottom:8px}
.form-row label .req{color:var(--c-primary);margin-left:4px}
.form-row input,.form-row textarea{
  width:100%;background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;font-size:.95rem;color:var(--t1);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{min-height:104px;resize:vertical}
.form-row input::placeholder,.form-row textarea::placeholder{color:#A8ADB9}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(242,92,42,.12);
}
.form-card .s-btn{width:100%;margin-top:6px}
.form-hint{margin-top:14px;font-size:.8rem;color:var(--t3);line-height:1.7}
.form-note{
  display:flex;gap:10px;align-items:flex-start;border-radius:10px;padding:12px 14px;
  font-size:.875rem;line-height:1.7;margin-bottom:20px;
}
.form-note-ok{background:rgba(18,165,148,.16);border:1px solid rgba(18,165,148,.4);color:#C9F1EA}
.form-note-ok i{color:var(--c-teal);margin-top:.25em}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--ink-text-2);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.05rem;margin-bottom:18px}
.footer-col p{font-size:.9rem;line-height:1.9;color:var(--ink-text-2)}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:.9rem;color:var(--ink-text-2);position:relative;padding-left:0;transition:color .2s ease,padding-left .2s ease}
.footer-col ul a:hover{color:#fff;padding-left:10px}
.footer-col ul a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-primary);transition:height .2s ease;
}
.footer-col ul a:hover::before{height:12px}
.footer-info li{display:flex;flex-direction:column;gap:4px}
.footer-info b{color:#fff;font-size:.85rem;font-weight:600}
.footer-info span{font-size:.85rem;color:var(--ink-text-2)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:.8rem;color:var(--t3);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta .s-btn{border-radius:999px;box-shadow:0 14px 30px -14px rgba(242,92,42,.9)}
.to-top{
  width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);
  color:var(--t1);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
  transition:transform .2s ease,border-color .2s ease,color .2s ease;
}
.to-top:hover{transform:translateY(-2px);border-color:var(--c-primary);color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sec-pad:72px}
  .container{padding:0 24px}
  .nav-toggle{display:flex}
  .nav-inner{height:64px;gap:16px}
  .site-header.is-scrolled .nav-inner{height:58px}
  .nav-menu{
    position:fixed;left:0;right:0;top:0;bottom:0;margin:0;padding:110px 24px 40px;
    background:#fff;flex-direction:column;align-items:flex-start;gap:6px;
    opacity:0;visibility:hidden;transform:translateY(-10px);overflow-y:auto;
    transition:opacity .25s ease,transform .25s ease,visibility .25s;
  }
  .nav-menu a{font-size:1.1rem;padding:14px 0;width:100%;border-bottom:1px solid var(--line)}
  .site-header.nav-open .nav-menu{opacity:1;visibility:visible;transform:none}
  .hero-narrative{min-height:auto;display:block}
  .hero-inner{padding:84px 0 40px;max-width:100%}
  .hero-card{position:static;width:auto;margin:0 24px 44px;padding:22px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .feature-row.reverse .feature-media{order:0}
  .feature-row.reverse .feature-copy{order:0}
  .flow{grid-template-columns:repeat(2,1fr)}
  .cell-lg-6{grid-column:span 6}
  .cell-lg-12{grid-column:span 12}
  .cta-wrap{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  :root{--sec-pad:56px}
  .container{padding:0 20px}
  .topbar{font-size:12px}
  .topbar-tip{display:none}
  .hero-inner{padding:64px 0 32px}
  .hero-actions{gap:10px}
  .hero-actions .s-btn{width:100%}
  .hero-card{margin:0 20px 36px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:18px}
  .stat{padding-left:14px}
  .stat-num{font-size:1.6rem}
  .grid-x{gap:16px}
  .cell-sm-12{grid-column:span 12}
  .cell-6,.cell-4,.cell-3{grid-column:span 12}
  .cell-lg-6{grid-column:span 12}
  .flow{grid-template-columns:1fr}
  .acc-head{padding:0 18px;font-size:.95rem}
  .acc-body p{padding:0 18px 20px 56px}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .float-cta{
    left:0;right:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.96);border-top:1px solid var(--line);
  }
  .float-cta .s-btn{flex:1;width:100%}
  .float-cta .to-top{display:none}
}

/* roulang page: category3 */
:root{
  --orange:#F25C2A;
  --orange-dark:#D9481C;
  --teal:#12A594;
  --teal-deep:#0B6E63;
  --lime:#CDF24A;
  --ink:#12141C;
  --ink-2:#232838;
  --bg:#F6F4EF;
  --bg-alt:#EFECE4;
  --card:#FFFFFF;
  --text:#16181D;
  --muted:#59606F;
  --weak:#8A90A0;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --r-card:16px;
  --r-img:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(18,20,28,.06);
  --sh-2:0 14px 30px -14px rgba(18,20,28,.24);
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol,dl{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text);line-height:1.3}
h1{font-size:clamp(2rem,4.4vw,3.2rem);font-weight:800;letter-spacing:-.01em;line-height:1.22}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700}
h3{font-size:1.25rem;font-weight:700}
h4{font-size:1.05rem;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{background:none;border:0;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 28px}

/* 顶部信息条 */
.topbar{background:var(--ink);color:#F2F1EC;font-size:13px}
.topbar-inner{display:flex;align-items:center;gap:16px;height:38px;min-height:38px;overflow-x:auto;white-space:nowrap}
.topbar-domain{font-weight:700;letter-spacing:.05em;color:#fff}
.topbar-note{color:#A9AEBF}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.topbar-actions a{color:#D6D9E2;transition:color .2s}
.topbar-actions a:hover{color:#fff}
.topbar-actions .sep{width:1px;height:12px;background:rgba(255,255,255,.24);display:inline-block}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.is-scrolled{box-shadow:0 8px 22px -16px rgba(18,20,28,.5)}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:72px;transition:min-height .25s}
.is-scrolled .nav-inner{min-height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{position:relative;width:28px;height:28px;border-radius:50%;border:2px solid var(--orange);display:inline-block;flex:none}
.brand-mark::after{content:"";position:absolute;top:-4px;right:-4px;width:9px;height:9px;border-radius:50%;background:var(--teal)}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text span{font-weight:800;font-size:1.05rem;letter-spacing:-.01em;color:var(--text)}
.brand-text small{font-size:11px;letter-spacing:.18em;color:var(--weak)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-menu a{position:relative;padding:10px 12px;font-size:.9375rem;color:var(--muted);border-radius:8px;transition:color .2s,background .2s}
.nav-menu a:hover{color:var(--text);background:var(--bg-alt)}
.nav-menu a.is-active{color:var(--orange);font-weight:600}
.nav-menu a.is-active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--orange);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;position:relative}
.nav-toggle i,.nav-toggle::before,.nav-toggle::after{content:"";display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.25s;position:absolute}
.nav-toggle::before{transform:translateY(-6px)}
.nav-toggle::after{transform:translateY(6px)}
.nav-toggle i{background:var(--text)}
.nav-menu.is-open ~ .nav-actions .nav-toggle::before{transform:rotate(45deg)}
.nav-menu.is-open ~ .nav-actions .nav-toggle::after{transform:rotate(-45deg)}
.nav-menu.is-open ~ .nav-actions .nav-toggle i{opacity:0}

/* 按钮体系 */
.s-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1.5px solid transparent;
  font-size:.9375rem;font-weight:600;line-height:1;cursor:pointer;text-align:center;
  transition:transform .18s,background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.s-btn:hover{transform:translateY(-1px)}
.s-btn:active{transform:translateY(1px)}
.s-btn-primary{background:var(--orange);color:#fff}
.s-btn-primary:hover{background:var(--orange-dark);color:#fff}
.s-btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.s-btn-outline:hover{background:var(--ink);color:#fff}
.s-btn-outline-light{border-color:rgba(255,255,255,.5);color:#F2F1EC;background:transparent}
.s-btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.s-btn-ghost{color:var(--text);padding:12px 4px;border-radius:0;position:relative}
.s-btn-ghost::after{content:"";position:absolute;left:4px;right:4px;bottom:6px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.s-btn-ghost:hover::after{transform:scaleX(1)}
.s-btn-sm{padding:10px 18px;font-size:.875rem}
.s-btn-full{width:100%}
.s-btn[disabled]{opacity:.45;pointer-events:none}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.7;white-space:nowrap}
.badge-orange{background:rgba(242,92,42,.13);color:#B33F16}
.badge-teal{background:rgba(18,165,148,.14);color:var(--teal-deep)}
.badge-lime{background:rgba(205,242,74,.38);color:#4E5C10}
.badge-ink{background:var(--ink);color:#fff}

/* 首屏 */
.page-hero{position:relative;overflow:hidden;padding:84px 0 72px;background:var(--bg-alt)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.32}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(246,244,239,.97) 0%,rgba(246,244,239,.9) 48%,rgba(246,244,239,.66) 100%)}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8125rem;font-weight:600;letter-spacing:.16em;color:var(--orange)}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange)}
.page-hero h1{margin:16px 0 18px}
.hero-sub{font-size:1.0625rem;color:var(--muted);max-width:640px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-tags li{font-size:.8125rem;color:var(--muted);padding:5px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.7)}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:26px 24px}
.hero-card-title{font-size:1rem;font-weight:700;padding-bottom:14px;border-bottom:2px solid var(--ink);margin-bottom:6px}
.hero-card ul li{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:.9375rem}
.hero-card ul li:last-child{border-bottom:0;padding-bottom:0}
.hero-card b{font-weight:600;color:var(--text);white-space:nowrap}
.hero-card span{color:var(--muted);text-align:right}

/* 板块 */
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-alt)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--muted)}
.block-lead{color:var(--muted);max-width:760px;margin-bottom:28px}

/* 侧栏 + 内容 */
.layout{display:grid;grid-template-columns:252px minmax(0,1fr);gap:56px;align-items:start}
.side-nav{position:sticky;top:96px}
.side-title{font-size:.8125rem;font-weight:700;letter-spacing:.16em;color:var(--weak);margin-bottom:14px}
.side-nav nav{display:flex;flex-direction:column;gap:2px;border-left:2px solid var(--line);padding-left:0}
.side-link{position:relative;padding:10px 0 10px 18px;font-size:.9375rem;color:var(--muted);transition:color .2s}
.side-link::before{content:"";position:absolute;left:-2px;top:8px;bottom:8px;width:2px;background:transparent;transition:background .2s}
.side-link:hover{color:var(--text)}
.side-link.is-current{color:var(--orange);font-weight:600}
.side-link.is-current::before{background:var(--orange)}
.side-cta{margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.side-cta p{font-size:.875rem;color:var(--muted);margin-bottom:14px}

.content .block{padding-bottom:64px;margin-bottom:64px;border-bottom:1px solid var(--line)}
.content .block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.block h2{margin-bottom:14px;position:relative;padding-top:8px}
.block h2::before{content:"";position:absolute;top:0;left:0;width:44px;height:3px;background:var(--orange);border-radius:3px}

/* 定义列表 */
.spec-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.spec-item{display:grid;grid-template-columns:230px minmax(0,1fr);gap:26px;padding:20px 0;border-bottom:1px solid var(--line);transition:background .2s}
.spec-item:hover{background:rgba(255,255,255,.7)}
.spec-item dt{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-weight:700;font-size:1rem}
.spec-item dd{margin:0;color:var(--muted);font-size:.9375rem;line-height:1.8}

/* 场地实拍小卡 */
.gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.g-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s,box-shadow .22s,border-color .22s}
.g-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(242,92,42,.3)}
.g-card figure{margin:0;overflow:hidden}
.g-card img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .35s}
.g-card:hover img{transform:scale(1.03)}
.g-body{padding:14px 16px 18px}
.g-body h3{font-size:.9375rem;font-weight:700;margin-bottom:6px}
.g-body p{font-size:.8125rem;color:var(--muted);margin:0;line-height:1.7}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.step{display:grid;grid-template-columns:48px minmax(0,1fr);gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);transition:border-color .2s,transform .2s}
.step:hover{border-color:rgba(18,165,148,.45);transform:translateY(-3px)}
.step-num{font-weight:800;font-size:1.25rem;color:var(--orange);font-variant-numeric:tabular-nums;line-height:1.2}
.step h3{font-size:1rem;margin-bottom:4px}
.step p{font-size:.875rem;color:var(--muted);margin:0}

/* 提示带 */
.tint-band{background:rgba(18,165,148,.1);border-top:1px solid rgba(18,165,148,.26);border-bottom:1px solid rgba(18,165,148,.26);padding:26px 0}
.tint-inner{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.tint-dot{width:10px;height:10px;border-radius:50%;background:var(--teal);flex:none}
.tint-inner p{margin:0;color:var(--teal-deep);font-weight:600;font-size:.9375rem}
.tint-inner a{margin-left:auto;color:var(--teal-deep);font-weight:700;border-bottom:2px solid rgba(18,165,148,.5);padding-bottom:2px;transition:border-color .2s}
.tint-inner a:hover{border-color:var(--teal-deep)}

/* FAQ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item.is-open{border-color:rgba(242,92,42,.35);box-shadow:var(--sh-2)}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;min-height:56px;padding:14px 20px;text-align:left;font-weight:600;font-size:1rem;color:var(--text)}
.faq-no{color:var(--orange);font-weight:800;font-variant-numeric:tabular-nums;flex:none}
.faq-icon{position:relative;width:22px;height:22px;margin-left:auto;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--muted);transform:translate(-50%,-50%);transition:transform .25s,background .2s}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-item.is-open .faq-icon::before{background:var(--orange)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 20px;margin:0;color:var(--muted);font-size:.9375rem}

/* CTA 深色区 */
.cta-section{background:var(--ink);color:#F2F1EC;padding:var(--sec) 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-section h2{color:#fff;margin-bottom:18px}
.cta-section p.lead{color:#A9AEBF;max-width:460px}
.cta-info{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.cta-info li{display:flex;gap:14px;font-size:.9375rem;color:#C8CCD8}
.cta-info b{color:#fff;font-weight:600;min-width:76px;flex:none}
.form-card{background:var(--ink-2);border:1px solid var(--line-dark);border-radius:var(--r-card);padding:30px 26px}
.form-row{display:grid;gap:8px;margin-bottom:18px}
.form-row label{font-size:.875rem;color:#C8CCD8}
.req{color:var(--orange)}
.form-row input,.form-row textarea{
  width:100%;background:#191C25;border:1px solid rgba(255,255,255,.16);border-radius:10px;
  padding:13px 14px;color:#F2F1EC;transition:border-color .2s,box-shadow .2s;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:#727888}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(242,92,42,.2)}
.form-note{font-size:.8125rem;color:#8A90A0;margin-top:14px}
.form-msg{margin-top:14px;font-size:.875rem;color:var(--teal);display:none;align-items:center;gap:8px}
.form-msg.is-show{display:flex}

/* 页脚 */
.site-footer{background:var(--ink);color:#A9AEBF;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.05rem;margin-bottom:16px}
.footer-brand .brand-mark{border-color:var(--orange)}
.footer-col p{font-size:.875rem;color:#A9AEBF;max-width:340px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{position:relative;font-size:.9375rem;color:#A9AEBF;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-col a:hover::before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:2px;height:14px;background:var(--orange)}
.footer-info li{display:flex;flex-direction:column;gap:2px;font-size:.875rem}
.footer-info b{color:#fff;font-weight:600}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-size:13px;color:#8A90A0}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;display:flex;align-items:center;gap:10px;
  opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .28s,transform .28s,visibility .28s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.back-top{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-2);color:var(--text);display:inline-flex;align-items:center;justify-content:center;transition:transform .2s,color .2s}
.back-top:hover{transform:translateY(-2px);color:var(--orange)}

/* 响应式 */
@media (max-width:1279px){
  .gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .nav-menu{
    position:absolute;top:100%;left:0;right:0;margin:0;flex-direction:column;align-items:stretch;gap:0;
    padding:10px 20px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
    opacity:0;visibility:hidden;transform:translateY(-10px);transition:.25s;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none}
  .nav-menu a{padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-menu a.is-active::after{left:8px;right:auto;width:34px;bottom:8px}
  .nav-toggle{display:inline-flex}
  .nav-actions .s-btn{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .layout{grid-template-columns:1fr;gap:32px}
  .side-nav{position:static}
  .side-nav nav{flex-direction:row;overflow-x:auto;border-left:0;border-bottom:1px solid var(--line);padding-bottom:8px;gap:8px}
  .side-link{padding:8px 14px;border:1px solid var(--line);border-radius:999px;white-space:nowrap;background:#fff}
  .side-link::before{display:none}
  .side-link.is-current{border-color:var(--orange);background:rgba(242,92,42,.08)}
  .side-cta{display:none}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .spec-item{grid-template-columns:190px minmax(0,1fr);gap:20px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding:0 20px}
  .page-hero{padding:56px 0 48px}
  .spec-item{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .spec-item dt{font-size:.9375rem}
  .gallery{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .tint-inner a{margin-left:0}
  .footer-grid{grid-template-columns:1fr;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:6px}
  .hero-card{padding:22px 18px}
  .form-card{padding:24px 20px}
}
@media (max-width:639px){
  body{padding-bottom:76px}
  .float-cta{
    left:0;right:0;bottom:0;padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    background:rgba(255,255,255,.97);border-top:1px solid var(--line);gap:10px;
  }
  .float-cta .s-btn{flex:1}
  .back-top{flex:none}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .s-btn{width:100%}
  h1{font-size:1.85rem}
}

/* roulang page: category4 */
:root{
  --brand:#F25C2A;
  --brand-dark:#D9481C;
  --teal:#12A594;
  --lime:#CDF24A;
  --ink:#12141C;
  --ink-2:#232838;
  --bg:#F6F4EF;
  --bg-alt:#EFECE4;
  --card:#FFFFFF;
  --text:#16181D;
  --muted:#59606F;
  --faint:#8A90A0;
  --line:#E3DFD6;
  --line-dark:rgba(255,255,255,.12);
  --on-dark:#F2F1EC;
  --on-dark-muted:#A9AEBF;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,20,28,.06);
  --shadow-2:0 14px 30px -14px rgba(18,20,28,.24);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:1rem;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;line-height:1.22}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.3}
h3{font-size:1.25rem;font-weight:700;line-height:1.45}
h4{font-size:1.05rem;font-weight:600;line-height:1.5}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea{font-family:inherit;font-size:1rem}
.tnum{font-variant-numeric:tabular-nums}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
}
.grid-container{
  max-width:1240px;
  padding-left:28px;
  padding-right:28px;
}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:var(--ink);
  color:var(--on-dark);
  font-size:13px;
  line-height:38px;
  height:38px;
  overflow:hidden;
}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:18px;
  white-space:nowrap;
}
.topbar-domain{
  color:var(--on-dark-muted);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.topbar-hint{
  color:var(--on-dark);
  position:relative;
  padding-left:18px;
}
.topbar-hint::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:5px;height:5px;
  margin-top:-2.5px;
  border-radius:50%;
  background:var(--brand);
}
.topbar-actions{
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:14px;
}
.topbar-actions a{color:var(--on-dark-muted);transition:color .2s}
.topbar-actions a:hover{color:#fff}
.topbar-actions .sep{width:1px;height:14px;background:rgba(255,255,255,.22)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,20,28,.5)}
.nav-inner{
  display:flex;
  align-items:center;
  height:72px;
  transition:height .25s ease;
  gap:24px;
}
.site-header.is-scrolled .nav-inner{height:60px}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:26px;height:26px;
  border-radius:8px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
  position:relative;
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:7px;
  border:1.5px solid #fff;
  border-radius:50%;
  border-top-color:transparent;
  transform:rotate(35deg);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text span{font-size:1.06rem;font-weight:800;letter-spacing:-.01em}
.brand-text small{font-size:.68rem;color:var(--faint);letter-spacing:.16em;margin-top:3px}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:.94rem;
  color:var(--muted);
  border-radius:8px;
  transition:color .2s,background .2s;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transition:transform .22s ease;
  border-radius:2px;
}
.nav-menu a:hover{color:var(--text);background:var(--bg-alt)}
.nav-menu a.is-active{color:var(--brand);font-weight:600}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  position:relative;
}
.nav-toggle i,
.nav-toggle i::before,
.nav-toggle i::after{
  position:absolute;
  left:12px;
  width:20px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle i{top:21px}
.nav-toggle i::before{content:"";left:0;top:-6px}
.nav-toggle i::after{content:"";left:0;top:6px}

/* ---------- 按钮 ---------- */
.s-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--radius-btn);
  font-size:.95rem;
  font-weight:600;
  border:1.5px solid transparent;
  transition:transform .18s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  cursor:pointer;
  text-align:center;
  line-height:1.2;
}
.s-btn:hover{transform:translateY(-1px)}
.s-btn:active{transform:translateY(1px)}
.s-btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px -10px rgba(242,92,42,.9)}
.s-btn-primary:hover{background:var(--brand-dark)}
.s-btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.s-btn-outline:hover{background:var(--ink);color:#fff}
.s-btn-ghost{background:transparent;color:var(--text);padding-left:2px;padding-right:2px}
.s-btn-ghost::after{
  content:"";
  display:block;
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:2px;
  background:var(--brand);
}
.s-btn-sm{padding:9px 16px;font-size:.875rem}
.s-btn-block{width:100%}
.s-btn[disabled]{opacity:.45;pointer-events:none;transform:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.7;
  letter-spacing:.02em;
}
.badge-brand{background:rgba(242,92,42,.12);color:var(--brand-dark)}
.badge-teal{background:rgba(18,165,148,.13);color:#0B7C6F}
.badge-ink{background:var(--ink);color:#fff}
.badge-lime{background:rgba(205,242,74,.35);color:#3E4A05}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--ink);color:var(--on-dark)}
.section-dark h2,.section-dark h3,.section-dark h4{color:var(--on-dark)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand);
  text-transform:none;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--brand);
  border-radius:2px;
}
.sec-head h2{margin-bottom:16px}
.sec-sub{color:var(--muted);font-size:1.02rem;line-height:1.85}
.section-dark .sec-sub{color:var(--on-dark-muted)}

/* ---------- 分类页 4 首屏 ---------- */
.c4-hero{
  position:relative;
  padding:88px 0 72px;
  background:
    radial-gradient(720px 320px at 88% 8%,rgba(18,165,148,.10),transparent 70%),
    radial-gradient(560px 300px at 6% 92%,rgba(242,92,42,.10),transparent 72%),
    var(--bg);
  overflow:hidden;
}
.c4-hero::before{
  content:"";
  position:absolute;
  top:-180px;right:-140px;
  width:560px;height:560px;
  border:1px solid rgba(242,92,42,.28);
  border-radius:50%;
  pointer-events:none;
}
.c4-hero::after{
  content:"";
  position:absolute;
  left:-120px;bottom:-160px;
  width:420px;height:420px;
  border:1px solid rgba(18,165,148,.24);
  border-radius:50%;
  pointer-events:none;
}
.c4-hero-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:56px;
  align-items:center;
}
.c4-hero h1{margin:0 0 20px}
.c4-hero .lead{
  font-size:1.1rem;
  color:var(--muted);
  max-width:520px;
  margin-bottom:30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-metrics li b{
  display:block;
  font-size:1.5rem;
  font-weight:800;
  color:var(--brand);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-metrics li span{
  display:block;
  font-size:.82rem;
  color:var(--muted);
  margin-top:6px;
  line-height:1.6;
}
.c4-hero-visual{position:relative}
.c4-hero-visual img{
  width:100%;
  aspect-ratio:4 / 3;
  object-fit:cover;
  box-shadow:var(--shadow-2);
}
.hero-chip{
  position:absolute;
  left:-18px;
  bottom:26px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);
  padding:16px 20px;
  min-width:210px;
}
.hero-chip b{
  display:block;
  font-size:.78rem;
  letter-spacing:.12em;
  color:var(--faint);
  margin-bottom:6px;
}
.hero-chip span{font-size:.95rem;font-weight:600;color:var(--text)}

/* ---------- 对比矩阵 ---------- */
.compare-wrap{position:relative}
.compare-scroll{
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  padding-bottom:8px;
  border-radius:var(--radius-card);
}
.compare-grid{
  display:grid;
  grid-template-columns:196px repeat(3,minmax(250px,1fr));
  min-width:920px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.cc{
  padding:18px 20px;
  border-bottom:1px solid var(--line);
  border-right:1px solid var(--line);
  font-size:.92rem;
  color:var(--text);
  line-height:1.7;
  display:flex;
  align-items:center;
  min-height:66px;
}
.cc:nth-child(4n){border-right:none}
.cc-label{
  background:var(--bg-alt);
  font-weight:600;
  color:var(--muted);
  font-size:.875rem;
  letter-spacing:.02em;
}
.cc-head{
  background:var(--ink);
  color:#fff;
  font-weight:700;
  font-size:1rem;
  min-height:88px;
  flex-direction:column;
  align-items:flex-start;
  justify-content:center;
  gap:8px;
  border-right:1px solid rgba(255,255,255,.1);
}
.cc-head:first-child{
  background:var(--ink-2);
  color:var(--on-dark-muted);
  font-size:.86rem;
  font-weight:600;
}
.cc-head .badge{font-size:11px;padding:3px 10px}
.cc-featured{background:rgba(242,92,42,.055)}
.cc-head.cc-featured{background:var(--brand);color:#fff}
.compare-grid .cc:nth-last-child(-n+4){border-bottom:none}
.scroll-hint{
  display:none;
  margin-top:12px;
  font-size:.82rem;
  color:var(--faint);
  text-align:center;
}
.compare-note{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
  align-items:center;
  color:var(--muted);
  font-size:.9rem;
}

/* ---------- 选择指南卡片 ---------- */
.guide-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 28px;
  height:100%;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.guide-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);
  border-color:rgba(242,92,42,.35);
}
.guide-icon{
  width:46px;height:46px;
  border-radius:14px;
  background:rgba(18,165,148,.12);
  color:var(--teal);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:1.05rem;
  margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.guide-card:nth-child(odd) .guide-icon{background:rgba(242,92,42,.12);color:var(--brand)}
.guide-card h3{margin-bottom:12px}
.guide-card p{color:var(--muted);font-size:.94rem;margin-bottom:18px}
.guide-list li{
  position:relative;
  padding-left:20px;
  font-size:.9rem;
  color:var(--text);
  margin-bottom:10px;
  line-height:1.7;
}
.guide-list li::before{
  content:"";
  position:absolute;
  left:2px;top:.72em;
  width:7px;height:7px;
  border-radius:2px;
  background:var(--brand);
  transform:rotate(45deg);
}
.guide-card.is-featured{
  border-color:rgba(242,92,42,.4);
  box-shadow:0 14px 30px -18px rgba(242,92,42,.5);
}

/* ---------- 流程 ---------- */
.flow-wrap{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  counter-reset:flow;
}
.flow-item{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.flow-num{
  font-size:1.5rem;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  display:block;
  margin-bottom:12px;
}
.flow-item h3{font-size:1.08rem;margin-bottom:10px}
.flow-item p{font-size:.9rem;color:var(--muted)}
.flow-item::after{
  content:"";
  position:absolute;
  top:44px;right:-24px;
  width:24px;height:1px;
  background:var(--line);
}
.flow-item:last-child::after{display:none}

/* ---------- 证据 / 引用 ---------- */
.proof-grid{
  display:grid;
  grid-template-columns:1.1fr 1fr 1fr;
  gap:24px;
  align-items:stretch;
}
.proof-visual{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-alt);
  min-height:280px;
}
.proof-visual img{width:100%;height:100%;object-fit:cover;border-radius:0}
.quote-card{
  background:var(--card);
  border:1px solid var(--line);
  border-left:4px solid var(--teal);
  border-radius:var(--radius-card);
  padding:30px 26px;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  transition:transform .22s ease,box-shadow .22s ease;
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.quote-mark{
  font-size:2.6rem;
  line-height:1;
  color:var(--teal);
  font-weight:800;
  margin-bottom:8px;
}
.quote-card blockquote{
  margin:0 0 20px;
  font-size:.98rem;
  line-height:1.85;
  color:var(--text);
}
.quote-meta{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:.82rem;
  color:var(--muted);
  border-top:1px solid var(--line);
  padding-top:16px;
}
.quote-meta b{color:var(--text);font-weight:600}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(242,92,42,.4);box-shadow:var(--shadow-2)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  gap:16px;
  min-height:64px;
  padding:14px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:1rem;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
}
.faq-idx{
  font-size:.82rem;
  font-weight:700;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
}
.faq-icon{
  margin-left:auto;
  width:22px;height:22px;
  position:relative;
  flex:0 0 auto;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:14px;height:2px;
  background:var(--brand);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(0);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 22px 22px 60px;
  color:var(--muted);
  font-size:.94rem;
  line-height:1.85;
  border-top:1px solid transparent;
}
.faq-item.is-open .faq-a{max-height:340px}

/* ---------- 深色 CTA ---------- */
.cta-section{
  background:var(--ink);
  color:var(--on-dark);
  padding:96px 0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  right:-160px;top:-160px;
  width:520px;height:520px;
  border:1px solid rgba(242,92,42,.28);
  border-radius:50%;
}
.cta-grid{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.cta-section h2{margin-bottom:18px}
.cta-section .sec-sub{color:var(--on-dark-muted);max-width:460px;margin-bottom:28px}
.cta-points li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  color:var(--on-dark-muted);
  font-size:.94rem;
  margin-bottom:14px;
}
.cta-points li b{color:var(--on-dark);font-weight:600}
.cta-points li::before{
  content:"";
  flex:0 0 auto;
  width:8px;height:8px;
  margin-top:.62em;
  border-radius:2px;
  background:var(--lime);
  transform:rotate(45deg);
}
.form-card{
  background:var(--ink-2);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-card);
  padding:32px 30px;
}
.form-card h3{color:var(--on-dark);font-size:1.15rem;margin-bottom:6px}
.form-card .form-tip{color:var(--on-dark-muted);font-size:.86rem;margin-bottom:22px}
.field{margin-bottom:18px}
.field label{
  display:block;
  font-size:.84rem;
  color:var(--on-dark-muted);
  margin-bottom:8px;
}
.field label .req{color:var(--brand);margin-left:4px}
.field input,
.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);
  color:var(--on-dark);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field input::placeholder,
.field textarea::placeholder{color:#7C8296}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  background:rgba(255,255,255,.07);
  box-shadow:0 0 0 3px rgba(242,92,42,.16);
}
.field textarea{resize:vertical;min-height:96px;line-height:1.7}
.form-foot{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:22px;
  flex-wrap:wrap;
}
.form-foot small{color:var(--on-dark-muted);font-size:.78rem}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:26px;
  bottom:26px;
  z-index:80;
  display:flex;
  align-items:center;
  gap:10px;
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top{
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:1.05rem;
  box-shadow:var(--shadow-2);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.back-top:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}

/* ---------- 面包屑 ---------- */
.crumb{
  background:var(--bg-alt);
  border-bottom:1px solid var(--line);
  padding:14px 0;
  font-size:13px;
  color:var(--muted);
}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.crumb li::after{content:"›";margin-left:8px;color:var(--faint)}
.crumb li:last-child::after{content:"";margin:0}
.crumb a{color:var(--muted);transition:color .2s}
.crumb a:hover{color:var(--brand)}
.crumb li[aria-current] {color:var(--text);font-weight:600}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--on-dark-muted);
  padding:72px 0 28px;
  font-size:.92rem;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line-dark);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--on-dark);
  font-weight:800;
  font-size:1.08rem;
  margin-bottom:16px;
}
.footer-col p{line-height:1.85;max-width:340px;font-size:.9rem}
.footer-col h4{
  color:var(--on-dark);
  font-size:.98rem;
  margin-bottom:18px;
  font-weight:700;
}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{
  color:var(--on-dark-muted);
  position:relative;
  padding-left:0;
  transition:color .2s ease,padding-left .2s ease;
  font-size:.9rem;
}
.footer-col ul a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:0;height:2px;
  background:var(--brand);
  transform:translateY(-50%);
  transition:width .2s ease;
}
.footer-col ul a:hover{color:#fff;padding-left:12px}
.footer-col ul a:hover::before{width:8px}
.footer-info li{display:flex;flex-direction:column;gap:4px}
.footer-info b{color:var(--on-dark);font-weight:600;font-size:.88rem}
.footer-info span{color:var(--on-dark-muted);font-size:.86rem;line-height:1.7}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding-top:24px;
  font-size:.82rem;
  color:#7C8296;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .section{padding:72px 0}
  .cta-section{padding:72px 0}
  .c4-hero{padding:64px 0 56px}
  .c4-hero-grid{grid-template-columns:1fr;gap:40px}
  .c4-hero-visual{order:2}
  .hero-chip{left:16px;bottom:16px}
  .flow-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-item:nth-child(2)::after{display:none}
  .proof-grid{grid-template-columns:1fr 1fr}
  .proof-visual{grid-column:1 / -1;min-height:240px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-menu{
    position:fixed;
    top:0;right:0;
    width:min(320px,84vw);
    height:100vh;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:96px 22px 32px;
    transform:translateX(105%);
    transition:transform .28s ease;
    box-shadow:-20px 0 40px -24px rgba(18,20,28,.5);
    overflow-y:auto;
    z-index:70;
  }
  body.nav-open .nav-menu{transform:translateX(0)}
  .nav-menu a{padding:16px 12px;border-bottom:1px solid var(--line);border-radius:0;font-size:1rem}
  .nav-menu a::after{display:none}
  .nav-menu a.is-active{background:rgba(242,92,42,.07)}
  .nav-toggle{display:block;z-index:80}
  body.nav-open .nav-toggle i{background:transparent}
  body.nav-open .nav-toggle i::before{transform:translateY(6px) rotate(45deg)}
  body.nav-open .nav-toggle i::after{transform:translateY(-6px) rotate(-45deg)}
  .nav-actions .s-btn-primary{display:none}
}
@media screen and (max-width:768px){
  .container,.grid-container{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .topbar-inner{gap:12px;overflow-x:auto;scrollbar-width:none}
  .topbar-inner::-webkit-scrollbar{display:none}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
  .faq-grid{grid-template-columns:1fr}
  .proof-grid{grid-template-columns:1fr}
  .flow-wrap{grid-template-columns:1fr}
  .flow-item::after{display:none}
  .scroll-hint{display:block}
  .compare-grid{grid-template-columns:150px repeat(3,minmax(220px,1fr));min-width:820px}
  .cc{padding:14px 16px;font-size:.86rem;min-height:60px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-col p{max-width:none}
  .float-cta{
    left:0;right:0;bottom:0;
    padding:0;
    gap:0;
    transform:translateY(0);
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 -10px 30px -20px rgba(18,20,28,.6);
  }
  .float-cta .s-btn{width:100%;border-radius:0;height:56px;box-shadow:none}
  .float-cta .back-top{display:none}
  body{padding-bottom:56px}
  .faq-a-inner{padding-left:22px}
}
@media screen and (max-width:520px){
  h1{font-size:2rem}
  .brand-text small{display:none}
  .hero-chip{position:static;margin-top:16px;left:auto;bottom:auto}
  .c4-hero-visual img{aspect-ratio:16 / 11}
  .form-card{padding:24px 20px}
  .hero-metrics li b{font-size:1.28rem}
}