/* roulang page: index */
:root{
  --deep:#0F6B63;
  --mid:#1E9E8A;
  --light:#35C9A8;
  --grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --text:#10201E;
  --text-2:#4A5C59;
  --text-3:#7C8C89;
  --white:#FFFFFF;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --alt:#EEF4F2;
  --footer:#0A211E;
  --border:#E2EAE7;
  --divider:#EDF2F0;
  --success:#17A673;
  --warning:#E8A33D;
  --error:#D9534F;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-img:18px;
  --sh:0 1px 2px rgba(16,32,30,.06), 0 8px 24px -12px rgba(16,32,30,.14);
  --sh-hover:0 18px 40px -18px rgba(15,107,99,.28);
  --sh-nav:0 6px 20px -12px rgba(16,32,30,.18);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--mid);outline-offset:2px;border-radius:8px}
.btn:focus-visible,.nav-link:focus-visible,.input:focus-visible{outline:none;box-shadow:0 0 0 2px #FFFFFF,0 0 0 4px rgba(30,158,138,.55)}
::selection{background:var(--accent-soft);color:var(--deep)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-alt{background:var(--alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.section-head-left{display:flex;gap:16px;align-items:flex-start}
.section-bar{display:block;width:4px;min-width:4px;height:38px;border-radius:999px;background:var(--grad);margin-top:4px}
.section-head h2{font-size:30px}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15.5px;max-width:780px;line-height:1.7}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;color:var(--deep);background:var(--alt);border-radius:999px;padding:6px 14px}

/* ---------- 顶部信息条 ---------- */
.topbar{height:38px;background:var(--footer);color:rgba(255,255,255,.92);font-size:13px;letter-spacing:.02em;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.topbar-domain{color:rgba(255,255,255,.76)}
.topbar-note{color:rgba(255,255,255,.72);text-align:center;flex:1}
.topbar-link{display:inline-flex;align-items:center;gap:6px;color:#FFFFFF;font-weight:600;height:26px}
.topbar-link .arrow{transition:transform .18s ease}
.topbar-link:hover{color:var(--light)}
.topbar-link:hover .arrow{transform:translateX(4px)}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:60}
.navbar{background:#FFFFFF;border-bottom:1px solid var(--border);transition:box-shadow .2s ease}
.navbar.is-scrolled{position:sticky;top:0;box-shadow:var(--sh-nav)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.logo-mark{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;background:var(--alt);border-radius:12px}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-0.01em;color:var(--text);white-space:nowrap}
.logo:hover .logo-text{color:var(--deep)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15.5px;font-weight:500;color:var(--text-2)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:3px;border-radius:999px;background:var(--grad);transform:scaleX(0);transform-origin:left center;transition:transform .16s ease}
.nav-link:hover{color:var(--deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--deep);font-weight:700}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:16px}
.nav-secondary{font-size:15px;color:var(--text-2);font-weight:600}
.nav-secondary:hover{color:var(--deep);text-decoration:underline;text-underline-offset:4px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--border);align-items:center;justify-content:center;background:#FFFFFF}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:#CDE3DE;background:var(--alt)}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;pointer-events:none;visibility:hidden}
.drawer.is-open{pointer-events:auto;visibility:visible}
.drawer-mask{position:absolute;inset:0;background:rgba(10,33,30,.42);opacity:0;transition:opacity .24s ease}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#FFFFFF;transform:translateX(100%);transition:transform .26s ease;display:flex;flex-direction:column;box-shadow:-18px 0 40px -24px rgba(16,32,30,.4)}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--divider)}
.drawer-title{font-size:16px;font-weight:800;color:var(--deep)}
.drawer-close{width:44px;height:44px;border-radius:14px;border:1px solid var(--border);font-size:20px;line-height:1;color:var(--text-2);display:flex;align-items:center;justify-content:center}
.drawer-close:hover{background:var(--alt)}
.drawer-nav{flex:1;overflow-y:auto}
.drawer-link{display:flex;align-items:center;height:56px;padding:0 20px;font-size:18px;color:var(--text);border-bottom:1px solid var(--divider)}
.drawer-link:hover{color:var(--deep);background:var(--alt)}
.drawer-link.is-active{color:var(--deep);font-weight:700}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--divider)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 28px;border-radius:999px;font-size:16px;font-weight:600;letter-spacing:.01em;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;white-space:nowrap}
.btn-primary{background:var(--grad);color:#FFFFFF;box-shadow:0 12px 26px -16px rgba(15,107,99,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px -18px rgba(15,107,99,.6);filter:brightness(1.04)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 8px 18px -14px rgba(15,107,99,.55)}
.btn-secondary{background:#FFFFFF;color:var(--deep);border:1.5px solid var(--deep)}
.btn-secondary:hover{background:var(--alt);transform:translateY(-2px)}
.btn-secondary:active{transform:translateY(1px)}
.btn-light{background:#FFFFFF;color:var(--deep)}
.btn-light:hover{background:var(--alt);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.btn-block{width:100%}
.link-cta{display:inline-flex;align-items:center;gap:8px;color:var(--deep);font-weight:600;font-size:15.5px}
.link-cta .arrow{transition:transform .18s ease}
.link-cta:hover{text-decoration:underline;text-underline-offset:4px}
.link-cta:hover .arrow{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--grad);color:#FFFFFF;padding:88px 0 80px}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:56px 56px;opacity:.7}
.hero::after{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.22),rgba(255,255,255,0) 68%)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:55fr 45fr;gap:56px;align-items:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:7px 16px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);letter-spacing:.02em}
.hero h1{margin-top:22px;font-size:44px;line-height:1.28;color:#FFFFFF}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.9);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.hero-trust{margin-top:36px;display:flex;flex-wrap:wrap;gap:12px 28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.22)}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:rgba(255,255,255,.88)}
.hero-trust .dot{width:7px;height:7px;border-radius:50%;background:#BFF3E6;box-shadow:0 0 0 4px rgba(255,255,255,.14)}
.hero-visual{position:relative}
.hero-img{border-radius:var(--r-lg);overflow:hidden;box-shadow:0 32px 60px -30px rgba(6,40,36,.6);background:rgba(255,255,255,.24)}
.hero-img img{width:100%;aspect-ratio:16/9;object-fit:cover}
.float-badge{position:absolute;background:#FFFFFF;color:var(--text);border-radius:18px;padding:12px 16px;box-shadow:var(--sh);display:flex;align-items:center;gap:12px;animation:floaty 5s ease-in-out infinite}
.float-badge strong{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--deep);letter-spacing:-0.01em}
.float-badge span{font-size:12.5px;color:var(--text-3);display:block;line-height:1.5}
.float-badge.b1{left:-22px;bottom:44px}
.float-badge.b2{right:-16px;top:36px;animation-delay:1.2s}
.float-badge.b3{right:28px;bottom:-20px;animation-delay:2.1s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

/* ---------- 指标看板 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{position:relative;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);padding:28px 24px 24px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;overflow:hidden}
.metric-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad)}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CDE3DE}
.metric-value{font-size:40px;font-weight:800;line-height:1.1;color:var(--deep);font-variant-numeric:tabular-nums;letter-spacing:-0.02em}
.metric-unit{font-size:15px;font-weight:600;color:var(--text-2);margin-left:6px}
.metric-desc{margin-top:8px;font-size:14px;color:var(--text-3);line-height:1.6}
.metric-foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;border-radius:999px;padding:5px 12px;line-height:1.5;white-space:nowrap}
.badge-soft{background:var(--alt);color:var(--deep)}
.badge-up{background:var(--accent-soft);color:#C2470F}
.badge-flat{background:var(--alt);color:var(--text-2)}
.badge-ok{background:rgba(23,166,115,.12);color:#0E7A54}
.badge-warn{background:rgba(232,163,61,.12);color:#9A6712}

/* ---------- 服务矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.matrix-main{grid-column:span 6;display:grid;grid-template-columns:45fr 55fr;gap:0;background:var(--card);border:2px solid transparent;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh);background-image:linear-gradient(#FFFFFF,#FFFFFF),var(--grad);background-origin:border-box;background-clip:padding-box,border-box;transition:transform .2s ease,box-shadow .2s ease}
.matrix-main:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.matrix-main-media img{width:100%;height:100%;min-height:320px;object-fit:cover}
.matrix-main-body{padding:40px}
.matrix-main-body h3{font-size:24px;margin-top:16px}
.matrix-main-body p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:560px}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2)}
.check-list .tick{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:var(--alt);color:var(--deep);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;margin-top:4px}
.matrix-card{grid-column:span 2;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);padding:28px 24px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#CDE3DE}
.matrix-card:hover h3{color:var(--deep)}
.matrix-num{font-size:13px;font-weight:800;color:var(--light);letter-spacing:.08em;font-variant-numeric:tabular-nums}
.matrix-card h3{font-size:19px;margin-top:12px;transition:color .2s ease}
.matrix-card p{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.matrix-card .link-cta{margin-top:18px}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1.6fr;gap:32px;align-items:start}
.compare-intro{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:36px 32px;box-shadow:var(--sh)}
.compare-intro h3{font-size:22px;margin-top:16px}
.compare-intro p{margin-top:14px;color:var(--text-2);font-size:15.5px}
.compare-intro .badge-stack{margin-top:22px;display:flex;flex-wrap:wrap;gap:10px}
.compare-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:12px 32px;box-shadow:var(--sh)}
.compare-row{padding:26px 0;border-bottom:1px solid var(--divider)}
.compare-row:last-child{border-bottom:0}
.compare-row-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.compare-row-head h4{font-size:17px}
.bar-track{position:relative;height:12px;border-radius:999px;background:var(--divider);margin-top:16px;overflow:hidden}
.bar-fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;transition:width .6s ease}
.bar-before{background:#D7E2DF}
.bar-after{background:var(--grad)}
.bar-legend{display:flex;gap:20px;margin-top:12px;flex-wrap:wrap}
.bar-legend span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.legend-dot{width:10px;height:10px;border-radius:50%}
.legend-dot.before{background:#D7E2DF}
.legend-dot.after{background:var(--mid)}

/* ---------- 卡片通用 ---------- */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--sh);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#CDE3DE}
.card:hover h3{color:var(--deep)}
.card-media{background:var(--alt);border-radius:var(--r-img);overflow:hidden;margin:16px 16px 0}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:19px;margin-top:12px;transition:color .2s ease;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{margin-top:10px;font-size:15px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--text-3)}
.card-meta time{font-variant-numeric:tabular-nums}
.latest-lead{margin-bottom:24px}
.card-lead{flex-direction:row;align-items:stretch}
.card-lead .card-media{margin:16px 0 16px 16px;flex:0 0 46%;max-width:520px}
.card-lead .card-media img{height:100%;aspect-ratio:auto;min-height:260px}
.card-lead .card-body{padding:32px 32px 28px}
.card-lead .card-body h3{font-size:24px;-webkit-line-clamp:2}
.card-lead .card-text{-webkit-line-clamp:3;font-size:15.5px}
.latest-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.empty-state{background:var(--card);border:1px dashed var(--border);border-radius:var(--r-lg);padding:64px 32px;text-align:center}
.empty-icon{width:64px;height:64px;border-radius:20px;background:var(--alt);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:26px;color:var(--deep)}
.empty-state p{color:var(--text-2);font-size:16px}
.empty-state .link-cta{margin-top:18px}

/* ---------- 用户反馈 ---------- */
.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);padding:30px 28px;box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:#CDE3DE}
.voice-quote{font-size:15.5px;color:var(--text-2);line-height:1.8;margin-top:16px}
.voice-foot{margin-top:22px;display:flex;align-items:center;gap:12px;padding-top:18px;border-top:1px solid var(--divider)}
.avatar{width:42px;height:42px;border-radius:14px;background:var(--grad);color:#FFFFFF;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.voice-name{font-size:15px;font-weight:700}
.voice-role{font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh);overflow:hidden}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;padding:16px 28px;text-align:left;font-size:17px;font-weight:600;color:var(--text);transition:background .18s ease,color .18s ease}
.faq-q:hover{background:var(--alt);color:var(--deep)}
.faq-icon{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--alt);color:var(--deep);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;transition:transform .22s ease,background .22s ease,color .22s ease}
.faq-item.is-open .faq-icon{background:var(--grad);color:#FFFFFF;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-a p{padding:0 28px 22px 28px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:760px}

/* ---------- 表单 ---------- */
.contact{background:var(--alt)}
.contact-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:32px;align-items:start}
.contact-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:40px 36px;box-shadow:var(--sh)}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:28px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:span 2}
.field label{font-size:14px;font-weight:600;color:var(--text-2)}
.input,.select,.textarea{width:100%;min-height:48px;border:1px solid var(--border);border-radius:var(--r-sm);padding:12px 16px;background:#FFFFFF;font-size:15.5px;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}
.textarea{min-height:120px;resize:vertical;line-height:1.7}
.input:hover,.select:hover,.textarea:hover{border-color:#CDE3DE}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--mid);box-shadow:0 0 0 3px rgba(30,158,138,.14)}
.form-note{margin-top:16px;font-size:13.5px;color:var(--text-3)}
.form-alert{display:none;margin-top:24px;border-radius:var(--r-sm);padding:14px 18px;font-size:15px;background:rgba(23,166,115,.12);border-left:4px solid var(--success);color:#0E7A54}
.form-alert.is-visible{display:block}
.trust-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:36px 32px;box-shadow:var(--sh)}
.trust-list{margin-top:24px;display:grid;gap:18px}
.trust-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7}
.trust-list .tick{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--alt);color:var(--deep);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;margin-top:4px}
.badge-stack{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--grad-dark);color:#FFFFFF;border-radius:var(--r-lg);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;bottom:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(53,201,168,.28),rgba(53,201,168,0) 70%)}
.cta-band h2{font-size:26px;color:#FFFFFF;position:relative;z-index:2}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:600px;position:relative;z-index:2}
.cta-band .btn{position:relative;z-index:2}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer);color:rgba(255,255,255,.72);font-size:14px;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-size:18px;font-weight:800}
.footer-brand .logo-mark{background:rgba(255,255,255,.12)}
.footer-desc{margin-top:18px;line-height:1.8;max-width:340px;color:rgba(255,255,255,.68)}
.footer h4{color:#FFFFFF;font-size:15px;margin-bottom:18px;letter-spacing:.01em}
.footer-list{display:grid;gap:12px}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:var(--light);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.6)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-inner{grid-template-columns:50fr 50fr;gap:40px}
  .hero h1{font-size:40px}
  .metrics{grid-template-columns:repeat(4,1fr);gap:20px}
  .metric-value{font-size:34px}
  .compare{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-menu,.nav-secondary{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:64px 0}
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero h1{font-size:34px}
  .hero-sub{max-width:100%}
  .float-badge.b1{left:12px;bottom:16px}
  .float-badge.b2{right:12px;top:16px}
  .float-badge.b3{display:none}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .matrix{grid-template-columns:repeat(4,1fr)}
  .matrix-main{grid-column:span 4;grid-template-columns:1fr}
  .matrix-main-media img{min-height:240px;aspect-ratio:16/9}
  .matrix-card{grid-column:span 2}
  .latest-grid{grid-template-columns:repeat(2,1fr)}
  .voices{grid-template-columns:repeat(2,1fr)}
  .card-lead{flex-direction:column}
  .card-lead .card-media{margin:16px 16px 0;flex:0 0 auto;max-width:none}
  .card-lead .card-media img{min-height:220px;aspect-ratio:16/9}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .topbar-note{display:none}
  .topbar-inner{justify-content:space-between}
  .nav-inner{height:64px}
  .logo-text{font-size:16px}
  .nav-actions .btn{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .section-head h2{font-size:22px}
  .hero{padding:48px 0 56px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-trust{gap:10px 20px;margin-top:28px}
  .float-badge{padding:10px 14px;border-radius:14px}
  .float-badge strong{font-size:17px}
  .metrics{grid-template-columns:repeat(2,1fr);gap:16px}
  .metric-card{padding:22px 18px 20px}
  .metric-value{font-size:28px}
  .metric-desc{font-size:13px}
  .matrix{grid-template-columns:1fr;gap:18px}
  .matrix-main,.matrix-card{grid-column:span 1}
  .matrix-main-body{padding:26px 22px}
  .matrix-main-body h3{font-size:20px}
  .compare-intro{padding:28px 22px}
  .compare-card{padding:8px 22px}
  .latest-grid{grid-template-columns:1fr}
  .voices{grid-template-columns:1fr}
  .card-lead .card-body{padding:24px 22px}
  .card-lead .card-body h3{font-size:20px}
  .faq-q{min-height:56px;padding:14px 20px;font-size:15.5px}
  .faq-a p{padding:0 20px 20px}
  .contact-card{padding:28px 22px}
  .form-grid{grid-template-columns:1fr}
  .field.full{grid-column:span 1}
  .contact-card .btn{width:100%}
  .trust-card{padding:28px 22px}
  .cta-band{padding:32px 24px;border-radius:var(--r-md)}
  .cta-band h2{font-size:21px}
  .cta-band .btn{width:100%}
  .footer{padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr}
  .float-badge.b1{position:static;margin-top:14px;animation:none}
  .float-badge.b2{position:static;margin-top:10px;animation:none}
  .hero-visual{display:flex;flex-direction:column}
}

/* roulang page: category1 */
:root{
  --brand-deep:#0F6B63;
  --brand-mid:#1E9E8A;
  --brand-light:#35C9A8;
  --brand-grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --brand-grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --text:#10201E;
  --text-2:#4A5C59;
  --text-3:#7C8C89;
  --white:#FFFFFF;
  --bg:#F6F8F7;
  --bg-alt:#EEF4F2;
  --footer-bg:#0A211E;
  --border:#E2EAE7;
  --border-soft:#EDF2F0;
  --success:#17A673;
  --warn:#E8A33D;
  --error:#D9534F;
  --r-xl:28px;
  --r-lg:20px;
  --r-sm:14px;
  --r-img:18px;
  --shadow-sm:0 1px 2px rgba(16,32,30,.06),0 8px 24px -12px rgba(16,32,30,.14);
  --shadow-hover:0 18px 40px -18px rgba(15,107,99,.28);
  --nav-h:72px;
  --top-h:38px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-deep);text-decoration:none;}
a:hover{color:var(--brand-mid);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em;font-weight:700;color:var(--text);}
p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-mid);outline-offset:2px;box-shadow:0 0 0 4px rgba(30,158,138,.12);}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--footer-bg);color:rgba(255,255,255,.86);font-size:13px;letter-spacing:.02em;}
.topbar-inner{height:var(--top-h);display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-domain{color:rgba(255,255,255,.72);}
.topbar-note{color:rgba(255,255,255,.62);}
.topbar-link{color:#fff;display:inline-flex;align-items:center;gap:6px;font-weight:500;}
.topbar-link .arrow{transition:transform .18s ease;}
.topbar-link:hover{color:var(--brand-light);}
.topbar-link:hover .arrow{transform:translateX(4px);}

/* ============ 主导航 ============ */
.site-header{position:relative;z-index:60;}
.navbar{
  background:#fff;
  border-bottom:1px solid var(--border-soft);
  transition:box-shadow .22s ease;
}
.navbar.is-stuck{
  position:sticky;
  top:0;
  box-shadow:0 6px 20px -12px rgba(16,32,30,.18);
}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--bg-alt);}
.logo-text{font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  white-space:nowrap;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:-2px;
  height:3px;
  border-radius:999px;
  background:var(--brand-grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .16s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.nav-secondary{font-size:15px;font-weight:500;color:var(--text-2);}
.nav-secondary:hover{color:var(--brand-deep);}
.nav-toggle{
  display:none;
  position:relative;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--border);
  background:#fff;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:20px;height:2px;
  border-radius:2px;
  background:var(--text);
  transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:calc(50% - 1px);}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}

/* 抽屉 */
.drawer{
  position:fixed;
  top:0;right:0;
  width:84vw;max-width:360px;
  height:100%;
  background:#fff;
  z-index:120;
  transform:translateX(104%);
  transition:transform .28s ease;
  display:flex;
  flex-direction:column;
  padding:20px 0 24px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 18px;border-bottom:1px solid var(--border-soft);}
.drawer-close{width:44px;height:44px;border-radius:12px;font-size:24px;line-height:1;color:var(--text-2);}
.drawer-menu{margin-top:8px;}
.drawer-menu a{
  display:flex;align-items:center;
  min-height:56px;
  padding:0 20px;
  font-size:18px;
  font-weight:500;
  color:var(--text);
  border-bottom:1px solid var(--border-soft);
}
.drawer-menu a.is-active{color:var(--brand-deep);font-weight:700;}
.drawer-cta{margin:20px 20px 0;width:calc(100% - 40px);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(10,33,30,.42);
  opacity:0;visibility:hidden;
  transition:opacity .26s ease,visibility .26s ease;
  z-index:110;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:50px;
  padding:0 30px;
  border-radius:999px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background-color .18s ease,color .18s ease;
}
.btn-primary{
  background:var(--brand-grad);
  color:#fff;
  box-shadow:0 10px 26px -14px rgba(15,107,99,.65);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  filter:brightness(1.06);
  box-shadow:0 18px 40px -18px rgba(15,107,99,.45);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px -10px rgba(15,107,99,.5);}
.btn-secondary{
  background:#fff;
  color:var(--brand-deep);
  border:1.5px solid var(--brand-deep);
}
.btn-secondary:hover{background:var(--bg-alt);color:var(--brand-deep);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--brand-deep);}
.btn-light:hover{background:#EEF4F2;color:var(--brand-deep);transform:translateY(-2px);}
.btn-sm{min-height:44px;padding:0 22px;font-size:15px;}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-deep);}
.link-cta .arrow{transition:transform .18s ease;}
.link-cta:hover{text-decoration:underline;}
.link-cta:hover .arrow{transform:translateX(4px);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  line-height:1.5;
  white-space:nowrap;
}
.badge-soft{background:var(--bg-alt);color:var(--brand-deep);}
.badge-accent{background:var(--accent-soft);color:#C6502A;}
.badge-ghost{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);}
.badge-line{background:#fff;color:var(--brand-deep);border:1px solid var(--border);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:var(--text-3);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand-mid);}
.breadcrumb .sep{color:var(--text-3);opacity:.7;}
.breadcrumb .current{color:var(--brand-light);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;
  background:var(--brand-grad-dark);
  color:#fff;
  padding:40px 0 88px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-160px;top:-200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(53,201,168,.30),transparent 68%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero .breadcrumb,
.hero .breadcrumb a{color:rgba(255,255,255,.68);}
.hero .breadcrumb .current{color:#fff;}
.hero-grid{
  display:grid;
  grid-template-columns:55% 45%;
  gap:56px;
  align-items:center;
}
.hero h1{
  color:#fff;
  font-size:44px;
  font-weight:800;
  margin:18px 0 20px;
}
.hero-lead{
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.86);
  max-width:600px;
}
.hero-points{margin:26px 0 0;display:grid;gap:14px;max-width:600px;}
.hero-points li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.9);font-size:15.5px;line-height:1.7;}
.hero-points .tick{
  flex-shrink:0;
  width:24px;height:24px;
  border-radius:999px;
  background:rgba(255,255,255,.16);
  color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  margin-top:3px;
}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:34px;}
.hero-actions .link-cta{color:#fff;}
.hero-actions .link-cta:hover{color:#fff;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:var(--r-xl);
  border:1px solid rgba(255,255,255,.24);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.55);
}
.float-badge{
  position:absolute;
  background:#fff;
  color:var(--brand-deep);
  font-size:13px;
  font-weight:700;
  padding:10px 16px;
  border-radius:999px;
  box-shadow:var(--shadow-sm);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.float-badge.badge-a{left:-18px;top:26px;}
.float-badge.badge-b{right:-14px;bottom:32px;color:#C6502A;background:var(--accent-soft);}
.float-badge .dot{width:8px;height:8px;border-radius:999px;background:var(--brand-mid);}
.float-badge.badge-b .dot{background:var(--accent);}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--brand-deep);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:4px;height:16px;
  border-radius:999px;
  background:var(--brand-grad);
}
h2.section-title{font-size:30px;font-weight:800;}
.section-sub{margin-top:16px;font-size:16.5px;color:var(--text-2);max-width:780px;line-height:1.85;}

/* ============ 要点清单 ============ */
.checklist{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.check-item{
  display:flex;
  gap:16px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CDE3DE;}
.check-mark{
  flex-shrink:0;
  width:36px;height:36px;
  border-radius:12px;
  background:var(--bg-alt);
  color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;
}
.check-item h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.check-item p{font-size:15px;color:var(--text-2);line-height:1.8;}

/* ============ 图文介绍 ============ */
.feature-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:40px 0;
}
.feature-row + .feature-row{border-top:1px solid var(--border);}
.feature-row.reverse .feature-media{order:-1;}
.feature-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--shadow-sm);
}
.feature-body h3{font-size:24px;font-weight:800;margin:14px 0 16px;}
.feature-body p{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:14px;}
.feature-list{margin-top:18px;display:grid;gap:10px;}
.feature-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--text-2);
}
.feature-list li::before{
  content:"";
  flex-shrink:0;
  width:7px;height:7px;
  border-radius:999px;
  background:var(--brand-mid);
  margin-top:9px;
}

/* ============ 速查卡 ============ */
.quick-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr;
  gap:24px;
}
.quick-card{
  position:relative;
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:30px 26px 28px;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card::before{
  content:"";
  position:absolute;left:0;right:0;top:0;
  height:4px;
  background:var(--brand-grad);
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CDE3DE;}
.quick-card.is-major{
  background:#fff;
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--brand-grad);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.quick-card h3{font-size:19px;font-weight:700;margin:14px 0 10px;}
.quick-card p{font-size:15px;color:var(--text-2);line-height:1.8;}
.quick-card .num{
  font-size:40px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  line-height:1.1;
}
.quick-card .card-foot{
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--border-soft);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.trend{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;font-size:12.5px;font-weight:700;}
.trend.up{background:var(--accent-soft);color:#C6502A;}
.trend.flat{background:var(--bg-alt);color:var(--text-2);}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#CDE3DE;}
.faq-item.is-open{border-color:var(--brand-mid);box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;
  min-height:64px;
  display:flex;
  align-items:center;
  gap:14px;
  text-align:left;
  padding:12px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-q .q-mark{
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:999px;
  background:var(--bg-alt);
  color:var(--brand-deep);
  font-size:14px;
  font-weight:800;
  display:inline-flex;align-items:center;justify-content:center;
}
.faq-q .sign{
  margin-left:auto;
  flex-shrink:0;
  font-size:22px;
  font-weight:400;
  color:var(--brand-mid);
  transition:transform .22s ease;
}
.faq-item.is-open .sign{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease;
}
.faq-a p{
  padding:0 22px 22px 64px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--brand-grad);
  color:#fff;
  padding:72px 0;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-120px;bottom:-180px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.20),transparent 70%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:28px;font-weight:800;}
.cta-inner p{margin-top:12px;color:rgba(255,255,255,.88);font-size:16px;max-width:680px;}
.cta-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;}

/* ============ 页脚 ============ */
.footer{background:var(--footer-bg);color:#fff;padding:72px 0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;margin-bottom:18px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:380px;}
.footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.footer-list{display:grid;gap:12px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--brand-light);text-decoration:underline;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13.5px;
  color:rgba(255,255,255,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{grid-template-columns:50% 50%;gap:40px;}
  .hero h1{font-size:38px;}
  .nav-menu{gap:0;}
  .nav-link{padding:8px 9px;font-size:14.5px;}
  .quick-grid{grid-template-columns:1fr 1fr;}
  .quick-card.is-major{grid-column:1 / -1;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-menu,.nav-secondary{display:none;}
  .nav-toggle{display:block;}
  .nav-actions{margin-left:auto;}
  .section{padding:72px 0;}
  .hero{padding:32px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:32px;}
  .hero-visual img{aspect-ratio:16/9;}
  .float-badge.badge-a{left:12px;top:14px;}
  .float-badge.badge-b{right:12px;bottom:14px;}
  h2.section-title{font-size:26px;}
  .checklist{gap:16px;}
  .feature-row{gap:32px;padding:32px 0;}
  .feature-body h3{font-size:21px;}
  .quick-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar-note{display:none;}
  .topbar-inner{justify-content:space-between;}
  .logo-text{font-size:16px;}
  .section{padding:56px 0;}
  .hero{padding:28px 0 56px;}
  .hero h1{font-size:28px;margin:14px 0 16px;}
  .hero-lead{font-size:16px;}
  .hero-actions{gap:14px;}
  .hero-actions .btn{width:100%;}
  .hero-actions .link-cta{width:100%;justify-content:center;}
  h2.section-title{font-size:22px;}
  .section-sub{font-size:15.5px;}
  .checklist{grid-template-columns:1fr;}
  .check-item{padding:22px 20px;}
  .feature-row{grid-template-columns:1fr;gap:24px;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-body h3{font-size:20px;}
  .quick-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;min-height:56px;padding:12px 16px;gap:10px;}
  .faq-a p{padding:0 16px 20px 16px;}
  .cta-inner h2{font-size:23px;}
  .cta-inner .btn{width:100%;}
  .footer{padding:56px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
}

/* roulang page: article */
:root{
  --brand-deep:#0F6B63;
  --brand-mid:#1E9E8A;
  --brand-light:#35C9A8;
  --brand-grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --brand-grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --text:#10201E;
  --text-2:#4A5C59;
  --text-3:#7C8C89;
  --bg:#F6F8F7;
  --bg-alt:#EEF4F2;
  --card:#FFFFFF;
  --footer-bg:#0A211E;
  --border:#E2EAE7;
  --border-2:#EDF2F0;
  --success:#17A673;
  --warn:#E8A33D;
  --error:#D9534F;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-img:18px;
  --sh-1:0 1px 2px rgba(16,32,30,.06),0 8px 24px -12px rgba(16,32,30,.14);
  --sh-2:0 18px 40px -18px rgba(15,107,99,.28);
  --sh-nav:0 6px 20px -12px rgba(16,32,30,.18);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-mid)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;color:var(--text);font-weight:700}
p{margin:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
table{max-width:100%}
:focus-visible{outline:2px solid var(--brand-deep);outline-offset:2px;box-shadow:0 0 0 4px rgba(30,158,138,.18)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}

/* ---------- 顶部信息条 ---------- */
.topbar{height:38px;background:#0A211E;color:#fff;font-size:13px;letter-spacing:.02em}
.topbar-inner{display:flex;align-items:center;gap:24px;height:38px}
.topbar-domain{color:rgba(255,255,255,.86);font-weight:600}
.topbar-note{color:rgba(255,255,255,.66)}
.topbar-link{margin-left:auto;display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:600}
.topbar-link:hover{color:var(--brand-light)}
.arrow{display:inline-block;transition:transform .18s ease}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:60}
.navbar{background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s ease}
.navbar.is-stuck{position:sticky;top:0;box-shadow:var(--sh-nav)}
.nav-inner{display:flex;align-items:center;height:72px;gap:28px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--bg-alt)}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-0.02em;color:var(--text)}
.logo:hover .logo-text{color:var(--brand-deep)}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:600;color:var(--text-2);white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:3px;border-radius:3px;background:var(--brand-grad);transform:scaleX(0);transform-origin:left center;transition:transform .16s ease}
.nav-link:hover{color:var(--brand-deep)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand-deep)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-secondary{font-size:14px;font-weight:600;color:var(--text-2)}
.nav-secondary:hover{color:var(--brand-deep)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);position:relative;background:#fff}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--brand-deep);transition:transform .2s ease,opacity .2s ease}
.nav-toggle span{top:21px}
.nav-toggle span::before{content:"";left:0;top:-6px}
.nav-toggle span::after{content:"";left:0;top:6px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 28px;border-radius:999px;font-size:16px;font-weight:600;text-align:center;transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background-color .18s ease}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 26px -14px rgba(15,107,99,.7)}
.btn-primary:hover{color:#fff;filter:brightness(1.04);box-shadow:var(--sh-2);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-sm{height:42px;padding:0 20px;font-size:15px}
.btn-secondary{background:#fff;border:1.5px solid var(--brand-deep);color:var(--brand-deep)}
.btn-secondary:hover{background:var(--bg-alt);color:var(--brand-deep)}
.btn-light{background:#fff;color:var(--brand-deep)}
.btn-light:hover{background:var(--bg-alt);color:var(--brand-deep);transform:translateY(-2px)}
.btn-block{width:100%}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-deep)}
.link-cta:hover .arrow{transform:translateX(4px)}
.link-cta:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,33,30,.44);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;z-index:90;transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;box-shadow:-18px 0 40px -24px rgba(16,32,30,.4)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--border-2)}
.drawer-close{width:44px;height:44px;border-radius:12px;font-size:24px;line-height:1;color:var(--text-2)}
.drawer-close:hover{background:var(--bg-alt);color:var(--brand-deep)}
.drawer-menu{flex:1;overflow:auto;padding:8px 0}
.drawer-menu a{display:flex;align-items:center;min-height:56px;padding:0 22px;font-size:18px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border-2)}
.drawer-menu a:hover,.drawer-menu a.is-active{color:var(--brand-deep);background:var(--bg-alt)}
.drawer-foot{padding:18px 22px;border-top:1px solid var(--border-2)}

/* ---------- 面包屑 ---------- */
.crumbs{padding:24px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3)}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:#C7D6D2}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--brand-deep)}
.crumbs .current{color:var(--brand-deep);font-weight:600}

/* ---------- 文章头部 ---------- */
.article-header{padding:20px 0 8px}
.article-header .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-deep);letter-spacing:.06em}
.article-header .eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--brand-grad)}
.article-title{margin:16px 0 0;font-size:44px;line-height:1.24;max-width:960px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:20px;font-size:14px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C7D6D2}
.article-cover{margin:32px 0 0;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--border);background:var(--bg-alt)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:13px;font-weight:600;line-height:1.6}
.badge-cat{background:var(--bg-alt);color:var(--brand-deep)}
.badge-accent{background:var(--accent-soft);color:#C24A15}
.badge-ok{background:rgba(23,166,115,.12);color:#0E6E4C}
.badge-warn{background:rgba(232,163,61,.12);color:#8A5B10}
.badge-info{background:rgba(30,158,138,.12);color:#0F6B63}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,780px) 240px;justify-content:center;gap:48px;padding:40px 0 8px;align-items:start}
.article-body{font-size:17px;line-height:1.85;color:var(--text-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{position:relative;margin:40px 0 18px;padding-left:16px;font-size:27px;line-height:1.35;color:var(--text)}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;background:var(--brand-grad)}
.article-body h3{margin:28px 0 12px;font-size:20px;color:var(--text)}
.article-body h4{margin:22px 0 10px;font-size:17px;color:var(--text)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:0 0 10px;line-height:1.75}
.article-body ul li::marker{color:var(--brand-mid)}
.article-body ol li::marker{color:var(--brand-mid);font-weight:700}
.article-body blockquote{margin:26px 0;padding:20px 24px;background:var(--bg-alt);border-left:4px solid var(--brand-mid);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--text-2)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:26px auto;border-radius:16px}
.article-body figure{margin:26px 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3)}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-decoration-color:rgba(30,158,138,.42);text-underline-offset:3px}
.article-body a:hover{color:var(--accent)}
.article-body strong{color:var(--brand-deep);font-weight:600}
.article-body hr{margin:34px 0;border:0;border-top:1px solid var(--border)}
.article-body table{width:100%;margin:26px 0;border-collapse:separate;border-spacing:0;border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden;font-size:15px}
.article-body th,.article-body td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border-2)}
.article-body th{background:var(--bg-alt);color:var(--text);font-weight:700}
.article-body tr:last-child td{border-bottom:0}

/* ---------- 目录 ---------- */
.toc-card{position:sticky;top:96px;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);padding:20px;box-shadow:var(--sh-1)}
.toc-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--text)}
.toc-title::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--brand-grad)}
.toc-list{margin-top:14px}
.toc-list a{display:block;padding:8px 0 8px 12px;font-size:14px;line-height:1.6;color:var(--text-2);border-left:2px solid var(--border-2)}
.toc-list a:hover{color:var(--brand-deep);border-left-color:var(--brand-light)}
.toc-list a.is-current{color:var(--brand-deep);font-weight:600;border-left-color:var(--brand-deep);background:var(--bg-alt);border-radius:0 8px 8px 0}
.toc-tip{margin-top:16px;padding-top:14px;border-top:1px dashed var(--border);font-size:13px;color:var(--text-3)}

/* ---------- 空态 ---------- */
.empty-state{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:56px 32px;text-align:center;box-shadow:var(--sh-1)}
.empty-icon{width:64px;height:64px;margin:0 auto 18px;border-radius:20px;background:var(--bg-alt);display:flex;align-items:center;justify-content:center;color:var(--brand-mid);font-size:28px;font-weight:800}
.empty-state h2{font-size:24px}
.empty-state p{margin:12px auto 22px;max-width:520px;color:var(--text-2)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{position:relative;padding-left:16px;font-size:30px}
.section-head h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand-grad)}
.section-head p{margin-top:10px;color:var(--text-2)}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CDE3DE}
.card-media{display:block;background:var(--bg-alt)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-title{font-size:19px;line-height:1.45}
.card-title a{color:var(--text)}
.card:hover .card-title a{color:var(--brand-deep)}
.card-desc{font-size:15px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:auto;padding-top:12px;border-top:1px solid var(--border-2);font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- CTA / 联系 ---------- */
.cta-band{background:var(--brand-grad-dark);color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:64px 32px}
.cta-inner h2{color:#fff;font-size:30px}
.cta-inner p{margin-top:12px;max-width:640px;color:rgba(255,255,255,.78);font-size:16px}
.cta-inner .btn{flex:0 0 auto}
.contact-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1 / -1}
.form-field label{font-size:14px;font-weight:600;color:var(--text)}
.form-field input,.form-field select,.form-field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--border);border-radius:var(--r-sm);font-family:inherit;font-size:15px;color:var(--text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.form-field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:0;border-color:var(--brand-mid);box-shadow:0 0 0 3px rgba(30,158,138,.18)}
.form-note{margin-top:14px;font-size:13px;color:var(--text-3)}
.alert{display:none;margin-bottom:20px;padding:14px 16px;border-radius:var(--r-sm);font-size:15px;background:rgba(23,166,115,.12);color:#0E6E4C;border-left:4px solid var(--success)}
.alert.is-visible{display:block}
.side-card{background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--r-lg);padding:28px}
.side-card h3{font-size:19px}
.promise-list{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.promise-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7}
.check{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--brand-grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:3px}
.side-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;padding-top:20px;border-top:1px solid var(--border)}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:#fff;padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-0.01em}
.footer-brand .logo-mark{background:rgba(255,255,255,.08)}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:360px}
.footer h4{margin:0 0 16px;font-size:16px;color:#fff}
.footer-list li{margin-bottom:12px;font-size:14px;color:rgba(255,255,255,.72)}
.footer-list a{color:rgba(255,255,255,.72)}
.footer-list a:hover{color:var(--brand-light);text-decoration:underline;text-underline-offset:4px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.62)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .article-aside{display:none}
  .article-title{font-size:38px}
  .cta-inner{padding:56px 32px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-secondary{display:none}
  .section{padding:72px 0}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;text-align:left}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .topbar-note{display:none}
  .section{padding:56px 0}
  .article-title{font-size:28px}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:18px}
  .card-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:22px}
  .cta-inner{padding:48px 20px}
  .cta-inner h2{font-size:22px}
  .cta-inner .btn{width:100%}
  .form-card{padding:24px}
  .form-grid{grid-template-columns:1fr}
  .article-header{padding-top:12px}
  .article-cover{border-radius:var(--r-md)}
  .empty-state{padding:40px 20px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .topbar-inner{gap:12px}
  .logo-text{font-size:16px}
}

/* roulang page: category3 */
:root{
  --c-deep:#0F6B63;
  --c-mid:#1E9E8A;
  --c-light:#35C9A8;
  --grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --t-1:#10201E;
  --t-2:#4A5C59;
  --t-3:#7C8C89;
  --t-inv:#FFFFFF;
  --bg:#F6F8F7;
  --bg-alt:#EEF4F2;
  --card:#FFFFFF;
  --footer-bg:#0A211E;
  --line:#E2EAE7;
  --line-2:#EDF2F0;
  --ok:#17A673;
  --warn:#E8A33D;
  --err:#D9534F;
  --r-xl:28px;
  --r-lg:20px;
  --r-sm:14px;
  --r-img:18px;
  --sh-1:0 1px 2px rgba(16,32,30,.06), 0 8px 24px -12px rgba(16,32,30,.14);
  --sh-2:0 18px 40px -18px rgba(15,107,99,.28);
  --f-sans:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--f-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--t-1);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-deep);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-mid);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:700;}
p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-mid);outline-offset:2px;box-shadow:0 0 0 4px rgba(30,158,138,.18);border-radius:6px;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--footer-bg);color:rgba(255,255,255,.88);font-size:13px;letter-spacing:.02em;}
.topbar-inner{display:flex;align-items:center;gap:24px;height:38px;}
.topbar-domain{color:rgba(255,255,255,.6);letter-spacing:.04em;}
.topbar-note{color:rgba(255,255,255,.82);}
.topbar-link{margin-left:auto;color:#fff;display:inline-flex;align-items:center;gap:4px;font-weight:600;}
.topbar-link:hover{color:var(--c-light);}
.topbar-link .arrow{transition:transform .18s ease;display:inline-block;}
.topbar-link:hover .arrow{transform:translateX(3px);}

/* ---------- 导航 ---------- */
.site-header{position:relative;z-index:60;}
.navbar{background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease;}
.navbar.is-stuck{position:sticky;top:0;box-shadow:0 6px 20px -12px rgba(16,32,30,.18);}
.nav-inner{display:flex;align-items:center;gap:32px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t-1);font-weight:800;font-size:18px;letter-spacing:-0.01em;}
.logo:hover{color:var(--c-deep);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--bg-alt);}
.logo-text{white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:8px;}
.nav-link{position:relative;display:inline-flex;align-items:center;height:72px;padding:0 14px;font-size:15px;font-weight:600;color:var(--t-2);}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:18px;height:3px;border-radius:999px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .16s ease;}
.nav-link:hover,.nav-link:focus-visible{color:var(--c-deep);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-deep);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:16px;}
.nav-secondary{font-size:15px;font-weight:600;color:var(--t-2);}
.nav-secondary:hover{color:var(--c-deep);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:18px;height:2px;border-radius:2px;background:var(--t-1);content:"";position:relative;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle span::before{position:absolute;top:-6px;left:0;}
.nav-toggle span::after{position:absolute;top:6px;left:0;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(10,33,30,.45);opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;z-index:70;}
.drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;transform:translateX(100%);transition:transform .26s ease;z-index:80;display:flex;flex-direction:column;}
.drawer.is-open{transform:translateX(0);}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line-2);font-weight:700;}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);font-size:18px;line-height:1;color:var(--t-2);}
.drawer-nav{padding:8px 0;overflow-y:auto;flex:1;}
.drawer-nav a{display:flex;align-items:center;height:56px;padding:0 20px;font-size:17px;font-weight:600;color:var(--t-1);border-bottom:1px solid var(--line-2);}
.drawer-nav a:hover{color:var(--c-deep);background:var(--bg-alt);}
.drawer-nav a.is-active{color:var(--c-deep);}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line-2);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:999px;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,filter .18s ease;white-space:nowrap;}
.btn-primary{background:var(--grad);color:#fff;height:50px;padding:0 30px;box-shadow:0 10px 24px -14px rgba(15,107,99,.6);}
.btn-primary:hover{color:#fff;filter:brightness(1.04);box-shadow:var(--sh-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px -10px rgba(15,107,99,.5);}
.btn-ghost{background:#fff;color:var(--c-deep);border:1.5px solid var(--c-mid);height:50px;padding:0 26px;}
.btn-ghost:hover{background:var(--bg-alt);color:var(--c-deep);transform:translateY(-2px);}
.btn-sm{height:44px;padding:0 22px;font-size:15px;}
.btn-invert{background:#fff;color:var(--c-deep);height:50px;padding:0 30px;}
.btn-invert:hover{background:var(--bg-alt);color:var(--c-deep);transform:translateY(-2px);}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-deep);}
.link-cta .arrow{transition:transform .18s ease;}
.link-cta:hover{text-decoration:underline;}
.link-cta:hover .arrow{transform:translateX(4px);}

/* ---------- 通用 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--bg-alt);color:var(--c-deep);}
.badge-accent{background:var(--accent-soft);color:#C24E1D;}
.badge-ok{background:rgba(23,166,115,.12);color:#0E7A53;}
.badge-warn{background:rgba(232,163,61,.14);color:#9B6B12;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{max-width:780px;margin-bottom:48px;}
.section-title{position:relative;font-size:30px;padding-left:18px;}
.section-title::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:999px;background:var(--grad);}
.section-sub{margin-top:14px;color:var(--t-2);font-size:16px;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--t-3);margin-bottom:12px;flex-wrap:wrap;}
.breadcrumb a{color:var(--t-3);font-weight:500;}
.breadcrumb a:hover{color:var(--c-mid);}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--c-deep);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--bg-alt);border-bottom:1px solid var(--line);}
.page-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(15,107,99,.14) 1px,transparent 1px);background-size:26px 26px;opacity:.6;}
.page-hero::after{content:"";position:absolute;top:-160px;right:-120px;width:460px;height:460px;border-radius:50%;background:var(--grad);opacity:.14;filter:blur(2px);}
.page-hero-inner{position:relative;z-index:2;padding:64px 0 72px;max-width:880px;}
.page-hero h1{font-size:44px;margin-bottom:18px;}
.page-hero .lead{font-size:17px;color:var(--t-2);max-width:780px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:24px;margin-top:8px;}
.tl-step{position:relative;padding-top:74px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding-left:22px;padding-right:22px;padding-bottom:28px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.tl-step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CDE3DE;}
.tl-num{position:absolute;top:22px;left:22px;width:44px;height:44px;border-radius:14px;background:var(--grad);color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;}
.tl-step::after{content:"";position:absolute;top:43px;left:74px;right:-24px;height:2px;background:linear-gradient(90deg,rgba(30,158,138,.5),rgba(30,158,138,.05));}
.tl-step:last-child::after{display:none;}
.tl-title{font-size:17px;margin-bottom:10px;}
.tl-desc{font-size:14.5px;color:var(--t-2);line-height:1.75;}
.tl-meta{margin-top:16px;font-size:13px;color:var(--t-3);}

/* ---------- 要点 + 信息卡 ---------- */
.panel-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:32px;align-items:start;margin-top:56px;}
.check-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.check-item{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CDE3DE;}
.check-icon{flex:0 0 30px;width:30px;height:30px;border-radius:10px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;}
.check-item h3{font-size:16px;margin-bottom:8px;}
.check-item p{font-size:14.5px;color:var(--t-2);}
.info-card{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-xl);padding:28px;}
.info-card h3{font-size:19px;margin-bottom:8px;}
.info-card .info-note{font-size:14px;color:var(--t-2);margin-bottom:20px;}
.info-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line);}
.info-row:last-of-type{border-bottom:0;}
.info-row .k{font-size:14px;color:var(--t-2);}
.info-row .v{font-size:14.5px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--t-1);text-align:right;}
.info-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px;}

/* ---------- 设备卡 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.device-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;display:flex;flex-direction:column;}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#CDE3DE;}
.card-media{aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;}
.device-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.device-body h3{font-size:18px;}
.device-body p{font-size:14.5px;color:var(--t-2);}
.device-body .link-cta{margin-top:auto;font-size:15px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;}
.faq-item.is-open{border-color:#CDE3DE;box-shadow:var(--sh-1);}
.faq-q{display:flex;align-items:center;gap:14px;width:100%;text-align:left;min-height:60px;padding:16px 20px;font-size:16px;font-weight:700;color:var(--t-1);}
.faq-q:hover{color:var(--c-deep);}
.faq-mark{flex:0 0 28px;width:28px;height:28px;border-radius:9px;background:var(--bg-alt);color:var(--c-deep);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;}
.faq-icon{margin-left:auto;color:var(--c-mid);font-size:20px;line-height:1;transition:transform .22s ease;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 20px 22px 62px;font-size:15px;line-height:1.8;color:var(--t-2);}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--grad);color:#fff;border-radius:var(--r-xl);padding:52px 48px;display:flex;align-items:center;gap:36px;justify-content:space-between;flex-wrap:wrap;}
.cta-band h2{font-size:28px;color:#fff;margin-bottom:12px;}
.cta-band p{font-size:16px;color:rgba(255,255,255,.9);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:#fff;margin-top:0;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer h4{font-size:16px;color:#fff;margin-bottom:18px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-desc{font-size:14px;color:rgba(255,255,255,.72);line-height:1.8;max-width:340px;}
.footer-list li{margin-bottom:12px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--c-light);text-decoration:underline;}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:56px;padding:24px 0 32px;font-size:14px;color:rgba(255,255,255,.6);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .page-hero h1{font-size:38px;}
  .timeline{grid-template-columns:repeat(3,1fr);}
  .tl-step::after{display:none;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-menu,.nav-secondary{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .page-hero-inner{padding:48px 0 56px;}
  .panel-grid{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr 1fr;}
  .device-grid{grid-template-columns:1fr 1fr;}
  .cta-band{padding:44px 36px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar-note{display:none;}
  .nav-inner{height:64px;gap:16px;}
  .logo-text{font-size:16px;}
  .nav-link{height:64px;}
  .section{padding:56px 0;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:16px;}
  .section-title{font-size:22px;}
  .timeline{grid-template-columns:1fr;gap:16px;}
  .tl-step{display:grid;grid-template-columns:1fr;padding-left:76px;padding-top:26px;padding-bottom:24px;}
  .tl-num{top:26px;left:22px;}
  .tl-step::before{content:"";position:absolute;top:70px;bottom:-16px;left:43px;width:2px;background:linear-gradient(180deg,rgba(30,158,138,.45),rgba(30,158,138,.05));}
  .tl-step:last-child::before{display:none;}
  .check-list{grid-template-columns:1fr;}
  .device-grid{grid-template-columns:1fr;}
  .cta-band{padding:36px 24px;border-radius:var(--r-lg);}
  .cta-band h2{font-size:22px;}
  .cta-actions,.cta-actions .btn{width:100%;}
  .faq-a-inner{padding-left:20px;}
  .footer{padding-top:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:10px;font-size:13px;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .tl-step{padding-left:24px;padding-top:74px;}
  .tl-step::before{display:none;}
  .btn{width:100%;}
  .nav-actions .btn-sm{width:auto;}
}

/* roulang page: category2 */
:root{
  --brand-deep:#0F6B63;
  --brand-mid:#1E9E8A;
  --brand-light:#35C9A8;
  --grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --text:#10201E;
  --text-2:#4A5C59;
  --text-3:#7C8C89;
  --white:#FFFFFF;
  --bg:#F6F8F7;
  --card:#FFFFFF;
  --bg-alt:#EEF4F2;
  --footer-bg:#0A211E;
  --border:#E2EAE7;
  --border-2:#EDF2F0;
  --ok:#17A673;
  --warn:#E8A33D;
  --err:#D9534F;
  --info:#1E9E8A;
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-img:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,32,30,.06),0 8px 24px -12px rgba(16,32,30,.14);
  --sh-2:0 18px 40px -18px rgba(15,107,99,.28);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;}
:focus-visible{outline:2px solid var(--brand-mid);outline-offset:2px;}
::selection{background:rgba(30,158,138,.18);}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}

/* ---------- 顶部信息条 ---------- */
.site-header{position:relative;z-index:60;}
.topbar{background:var(--footer-bg);color:#fff;font-size:13px;letter-spacing:.02em;}
.topbar-inner{display:flex;align-items:center;gap:24px;min-height:38px;padding-top:6px;padding-bottom:6px;}
.topbar-domain{font-variant-numeric:tabular-nums;color:rgba(255,255,255,.86);}
.topbar-note{flex:1;text-align:center;color:rgba(255,255,255,.72);}
.topbar-link{display:inline-flex;align-items:center;gap:4px;color:#fff;white-space:nowrap;transition:color .18s ease;}
.topbar-link .arrow{transition:transform .18s ease;}
.topbar-link:hover{color:var(--brand-light);text-decoration:underline;}
.topbar-link:hover .arrow{transform:translateX(3px);}

/* ---------- 主导航 ---------- */
.navbar{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .22s ease;}
.navbar.is-scrolled{box-shadow:0 6px 20px -12px rgba(16,32,30,.18);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;}
.logo-text{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);}
.nav-menu{display:flex;align-items:center;gap:26px;margin:0 auto;}
.nav-link{position:relative;display:inline-block;padding:24px 2px;font-size:15.5px;font-weight:500;color:var(--text-2);transition:color .18s ease;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:3px;border-radius:3px;background:var(--grad);transform:scaleX(0);transform-origin:left center;transition:transform .18s ease;}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.nav-secondary{font-size:15px;font-weight:500;color:var(--brand-deep);}
.nav-secondary:hover{text-decoration:underline;text-underline-offset:4px;}
.nav-toggle{display:none;position:relative;width:44px;height:44px;border:1px solid var(--border);border-radius:12px;background:#fff;padding:0;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--brand-deep);content:"";}
.nav-toggle span{top:50%;transform:translateY(-1px);}
.nav-toggle span::before{left:0;right:0;top:-7px;}
.nav-toggle span::after{left:0;right:0;top:7px;}

/* ---------- 抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(10,33,30,.45);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;z-index:80;}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;z-index:90;display:flex;flex-direction:column;padding:20px;transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border);}
.drawer-brand{display:flex;align-items:center;gap:8px;font-weight:700;}
.drawer-close{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:12px;font-size:20px;line-height:1;color:var(--brand-deep);}
.drawer-nav{margin-top:8px;}
.drawer-nav a{display:flex;align-items:center;min-height:56px;font-size:18px;color:var(--text);border-bottom:1px solid var(--border-2);}
.drawer-nav a.is-active{color:var(--brand-deep);font-weight:600;}
.drawer-cta{margin-top:auto;width:100%;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border:0;border-radius:var(--r-pill);font-weight:600;font-size:16px;transition:filter .2s ease,transform .12s ease,background-color .2s ease,box-shadow .2s ease;}
.btn-primary{background-image:var(--grad);background-size:150% 150%;background-position:0% 50%;color:#fff;box-shadow:0 12px 26px -16px rgba(15,107,99,.6);}
.btn-primary:hover{filter:brightness(1.04);background-position:30% 50%;transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px -12px rgba(15,107,99,.5);}
.btn-outline{background:#fff;color:var(--brand-deep);border:1.5px solid var(--brand-mid);}
.btn-outline:hover{background:var(--bg-alt);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-sm{height:42px;padding:0 20px;font-size:15px;}
.btn-block{width:100%;}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-weight:600;}
.link-cta .arrow{transition:transform .18s ease;}
.link-cta:hover{text-decoration:underline;text-underline-offset:4px;}
.link-cta:hover .arrow{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;line-height:1.6;}
.badge--soft{background:var(--bg-alt);color:var(--brand-deep);}
.badge--up{background:var(--accent-soft);color:#C24A18;}
.badge--flat{background:var(--bg-alt);color:var(--text-2);}
.badge--ok{background:rgba(23,166,115,.12);color:#0E7D55;}
.badge--info{background:rgba(30,158,138,.12);color:#0F6B63;}
.badge--warn{background:rgba(232,163,61,.14);color:#95651A;}

/* ---------- 面包屑 ---------- */
.crumb{padding:22px 0 0;font-size:14px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb .sep{color:#B9C7C4;}
.crumb a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
.crumb .current{color:var(--brand-deep);font-weight:600;}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section--tight{padding:56px 0;}
.section--alt{background:var(--bg-alt);}
.section--white{background:#fff;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.section-head h2{position:relative;padding-left:18px;font-size:30px;line-height:1.3;letter-spacing:-.01em;}
.section-head h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--grad);}
.section-head p{max-width:640px;color:var(--text-2);font-size:15.5px;margin-top:10px;}
.section-head .head-right{font-size:14px;color:var(--text-3);}

/* ---------- 页头引导 ---------- */
.page-intro{padding:8px 0 56px;}
.intro-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:start;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--r-pill);background:var(--bg-alt);color:var(--brand-deep);font-size:13px;font-weight:600;letter-spacing:.02em;}
.page-intro h1{margin-top:18px;font-size:44px;line-height:1.3;letter-spacing:-.01em;font-weight:800;}
.page-intro .lead{margin-top:18px;max-width:780px;font-size:17px;line-height:1.85;color:var(--text-2);}
.intro-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.filter-panel{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh-1);}
.filter-panel h2{font-size:15px;color:var(--text-3);font-weight:600;letter-spacing:.04em;}
.filter-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;}
.tag{padding:8px 16px;border-radius:var(--r-pill);border:1px solid var(--border);background:#fff;font-size:14px;color:var(--text-2);}
.tag.is-active{background-image:var(--grad);color:#fff;border-color:transparent;font-weight:600;}
.filter-list{margin-top:20px;border-top:1px solid var(--border-2);padding-top:16px;font-size:14px;color:var(--text-2);}
.filter-list li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;}
.filter-list strong{color:var(--text);font-variant-numeric:tabular-nums;}

/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:26px 24px 24px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.metric-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad);}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CDE3DE;}
.metric-label{font-size:14px;color:var(--text-3);}
.metric-value{display:flex;align-items:baseline;gap:6px;margin-top:10px;font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--text);}
.metric-value .unit{font-size:15px;font-weight:600;color:var(--text-2);}
.metric-desc{margin-top:10px;font-size:14px;line-height:1.7;color:var(--text-2);}
.metric-foot{margin-top:14px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}

/* ---------- 对比面板 ---------- */
.compare-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:24px;align-items:stretch;}
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);}
.panel h3{font-size:20px;margin-bottom:8px;}
.panel .panel-note{font-size:14.5px;color:var(--text-2);margin-bottom:26px;}
.bar-row{margin-bottom:24px;}
.bar-row:last-child{margin-bottom:0;}
.bar-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:15px;color:var(--text-2);}
.bar-head .bar-val{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);}
.bar-track{margin-top:10px;height:14px;border-radius:var(--r-pill);background:#EDF2F0;overflow:hidden;}
.bar-fill{height:100%;border-radius:var(--r-pill);background-image:var(--grad);}
.bar-fill--accent{background-image:linear-gradient(135deg,#FF9A6A 0%,#FF7A45 100%);}
.bar-fill--muted{background-image:linear-gradient(135deg,#C9D6D3 0%,#AEBCB9 100%);}
.bar-caption{display:flex;justify-content:space-between;gap:12px;margin-top:8px;font-size:13px;color:var(--text-3);}
.compare-media{display:flex;flex-direction:column;overflow:hidden;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);}
.compare-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg) var(--r-lg) 0 0;}
.compare-media figcaption{padding:20px 24px 24px;font-size:14.5px;color:var(--text-2);line-height:1.75;}
.compare-media figcaption strong{display:block;font-size:17px;color:var(--text);margin-bottom:6px;}

/* ---------- 要点卡 ---------- */
.points-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.point-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:28px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CDE3DE;}
.point-card h3{margin-top:16px;font-size:20px;line-height:1.45;}
.point-card h3 a:hover{color:var(--brand-deep);}
.point-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2);}
.point-card .point-foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--border-2);padding-top:16px;font-size:13.5px;color:var(--text-3);}

/* ---------- 参数区 ---------- */
.spec-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;}
.spec-row{display:flex;align-items:center;gap:20px;min-height:56px;padding:12px 28px;border-bottom:1px solid var(--border-2);}
.spec-row:last-child{border-bottom:0;}
.spec-row:nth-child(even){background:var(--bg);}
.spec-key{flex:0 0 40%;font-size:15px;color:var(--text-2);}
.spec-val{flex:1 1 60%;font-size:15.5px;font-weight:600;color:var(--text);}
.spec-val .badge{margin-left:8px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{display:flex;align-items:center;gap:16px;width:100%;min-height:60px;padding:14px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--text);transition:color .18s ease;}
.faq-q:hover{color:var(--brand-deep);}
.faq-mark{flex:0 0 30px;width:30px;height:30px;border-radius:50%;background:var(--bg-alt);color:var(--brand-deep);font-size:14px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;}
.faq-q .faq-text{flex:1;}
.faq-icon{flex:0 0 24px;text-align:center;font-size:20px;font-weight:600;color:var(--brand-mid);transition:transform .2s ease;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a p{padding:0 0 20px 46px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}

/* ---------- 表单 ---------- */
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);padding:36px;box-shadow:var(--sh-1);max-width:760px;}
.form-card h3{font-size:20px;}
.form-card .form-note{margin-top:8px;font-size:15px;color:var(--text-2);}
.form-alert{display:none;margin-top:22px;padding:14px 18px;border-radius:var(--r-sm);font-size:14.5px;border-left:4px solid var(--ok);background:rgba(23,166,115,.12);color:#0E7D55;}
.form-alert.is-visible{display:block;}
.field{margin-top:20px;}
.field label{display:block;font-size:14.5px;font-weight:600;margin-bottom:8px;}
.field .hint{font-size:13px;color:var(--text-3);font-weight:400;margin-left:6px;}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 16px;border:1px solid var(--border);border-radius:var(--r-sm);background:#fff;font-size:15.5px;transition:border-color .18s ease,box-shadow .18s ease;}
.field textarea{height:auto;min-height:112px;padding:12px 16px;line-height:1.75;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-mid);box-shadow:0 0 0 3px rgba(30,158,138,.12);}
.field-error{display:none;margin-top:8px;font-size:13px;color:var(--err);}
.field.has-error input,.field.has-error textarea{border-color:var(--err);}
.field.has-error .field-error{display:block;}
.form-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.form-actions .btn{min-width:180px;}
.form-tip{font-size:13.5px;color:var(--text-3);}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;max-width:380px;}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-list li{margin-bottom:10px;font-size:14px;}
.footer-list a:hover{color:var(--brand-light);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .intro-grid{gap:32px;}
  .metric-grid{gap:20px;}
  .metric-value{font-size:34px;}
  .panel{padding:26px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav-menu,.nav-secondary{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .intro-grid{grid-template-columns:1fr;}
  .page-intro h1{font-size:34px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .section{padding:72px 0;}
  .section-head h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar-note{display:none;}
  .topbar-inner{justify-content:space-between;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .page-intro{padding:4px 0 40px;}
  .page-intro h1{font-size:28px;}
  .page-intro .lead{font-size:16px;}
  .section-head h2{font-size:22px;}
  .metric-grid{grid-template-columns:1fr;gap:16px;}
  .metric-value{font-size:32px;}
  .points-grid{grid-template-columns:1fr;}
  .panel{padding:22px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:4px;padding:14px 20px;min-height:auto;}
  .spec-key,.spec-val{flex:none;width:100%;}
  .faq-q{min-height:56px;font-size:16px;}
  .faq-a p{padding-left:0;}
  .form-card{padding:24px;}
  .btn{width:100%;}
  .intro-actions .btn,.form-actions .btn{min-width:0;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .metric-value{font-size:30px;}
  .tag{padding:7px 13px;font-size:13px;}
  .panel h3{font-size:18px;}
}

/* roulang page: category4 */
:root{
  --brand-deep:#0F6B63;
  --brand-mid:#1E9E8A;
  --brand-light:#35C9A8;
  --brand-grad:linear-gradient(135deg,#0F6B63 0%,#1E9E8A 55%,#35C9A8 100%);
  --brand-grad-dark:linear-gradient(135deg,#0A4A44 0%,#14705F 100%);
  --accent:#FF7A45;
  --accent-soft:#FFE7DC;
  --text:#10201E;
  --text-2:#4A5C59;
  --text-3:#7C8C89;
  --white:#FFFFFF;
  --bg:#F6F8F7;
  --bg-alt:#EEF4F2;
  --card:#FFFFFF;
  --footer-bg:#0A211E;
  --border:#E2EAE7;
  --border-2:#EDF2F0;
  --success:#17A673;
  --warning:#E8A33D;
  --danger:#D9534F;
  --radius-lg:28px;
  --radius:20px;
  --radius-sm:14px;
  --radius-img:18px;
  --shadow:0 1px 2px rgba(16,32,30,.06),0 8px 24px -12px rgba(16,32,30,.14);
  --shadow-hover:0 18px 40px -18px rgba(15,107,99,.28);
  --shadow-nav:0 6px 20px -12px rgba(16,32,30,.18);
  --sp-4:4px; --sp-8:8px; --sp-12:12px; --sp-16:16px; --sp-24:24px;
  --sp-32:32px; --sp-48:48px; --sp-64:64px; --sp-96:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-mid);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--brand-deep);}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-0.01em;font-weight:700;color:var(--text);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--brand-mid);outline-offset:2px;border-radius:6px;}
.container{max-width:1280px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-alt{background:var(--bg-alt);}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--footer-bg);color:#fff;font-size:13px;letter-spacing:.02em;}
.topbar-inner{height:38px;display:flex;align-items:center;gap:24px;}
.topbar-domain{color:rgba(255,255,255,.78);}
.topbar-note{color:rgba(255,255,255,.7);margin-left:auto;}
.topbar-link{color:#fff;display:inline-flex;align-items:center;gap:6px;font-weight:500;}
.topbar-link .arrow{transition:transform .18s ease;}
.topbar-link:hover{color:var(--brand-light);}
.topbar-link:hover .arrow{transform:translateX(4px);}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:50;}
.navbar{
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .24s ease;
}
.navbar.is-stuck{position:sticky;top:0;box-shadow:var(--shadow-nav);}
.nav-inner{height:72px;display:flex;align-items:center;gap:32px;}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--text);font-size:18px;letter-spacing:-0.01em;}
.logo:hover{color:var(--brand-deep);}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;background:var(--bg-alt);}
.nav-menu{display:flex;align-items:center;gap:8px;margin-left:16px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:72px;
  padding:0 14px;font-size:15.5px;font-weight:500;color:var(--text-2);
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  background:var(--brand-grad);border-radius:3px 3px 0 0;
  transform:scaleX(0);transform-origin:left center;transition:transform .16s ease;
}
.nav-link:hover{color:var(--brand-deep);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand-deep);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:18px;}
.nav-secondary{font-size:15px;font-weight:500;color:var(--text-2);}
.nav-secondary:hover{color:var(--brand-deep);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  align-items:center;justify-content:center;border:1px solid var(--border);
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 移动抽屉 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84vw;max-width:360px;background:#fff;
  z-index:120;padding:24px 20px 0;transform:translateX(102%);
  transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:-18px 0 40px -24px rgba(16,32,30,.4);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--border-2);}
.drawer-close{width:44px;height:44px;font-size:24px;line-height:1;color:var(--text-2);border-radius:12px;}
.drawer-list{margin-top:8px;flex:1;overflow:auto;}
.drawer-list a{
  display:flex;align-items:center;height:56px;font-size:18px;color:var(--text);
  border-bottom:1px solid var(--border-2);
}
.drawer-list a.is-active{color:var(--brand-deep);font-weight:600;}
.drawer-cta{padding:16px 0 24px;border-top:1px solid var(--border-2);}
.drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,33,30,.42);z-index:110;opacity:0;visibility:hidden;
  transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 30px;border-radius:999px;font-weight:600;font-size:16px;
  border:1.5px solid transparent;transition:all .2s ease;white-space:nowrap;
}
.btn-primary{background:var(--brand-grad);color:#fff;box-shadow:0 10px 24px -14px rgba(15,107,99,.6);}
.btn-primary:hover{background:linear-gradient(135deg,#0C5D56 0%,#1B8F7C 55%,#2FBC9C 100%);color:#fff;filter:brightness(1.04);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 12px -8px rgba(15,107,99,.5);}
.btn-ghost{background:#fff;border-color:var(--brand-mid);color:var(--brand-deep);}
.btn-ghost:hover{background:var(--bg-alt);color:var(--brand-deep);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:#fff;color:var(--brand-deep);}
.btn-light:hover{background:var(--bg-alt);color:var(--brand-deep);}
.btn-sm{height:44px;padding:0 22px;font-size:15px;}
.btn-block{width:100%;}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand-deep);}
.link-cta .arrow{transition:transform .18s ease;}
.link-cta:hover .arrow{transform:translateX(4px);}
.link-cta:hover{text-decoration:underline;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--bg-alt);color:var(--brand-deep);}
.badge-accent{background:var(--accent-soft);color:#C4451B;}
.badge-neutral{background:#EEF4F2;color:var(--text-2);}
.badge-success{background:rgba(23,166,115,.12);color:#0E7A54;}
.badge-warning{background:rgba(232,163,61,.14);color:#9A6A15;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:12px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb .sep{color:#C3D2CE;}
.breadcrumb .current{color:var(--brand-deep);font-weight:600;}

/* ---------- 页面头部 ---------- */
.page-head{
  background:
    radial-gradient(1100px 420px at 88% -12%,rgba(53,201,168,.18),transparent 62%),
    linear-gradient(180deg,#FFFFFF 0%,#F6F8F7 100%);
  border-bottom:1px solid var(--border);
  padding:56px 0 48px;
}
.page-head h1{font-size:44px;max-width:900px;}
.page-head .lead{margin-top:20px;max-width:780px;color:var(--text-2);font-size:17px;}
.head-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.chip-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 20px;
  border-radius:999px;background:#fff;border:1px solid var(--border);
  color:var(--text-2);font-size:14.5px;font-weight:500;transition:all .2s ease;
}
.chip:hover{border-color:#CDE3DE;color:var(--brand-deep);box-shadow:var(--shadow);}
.chip.is-active{background:var(--brand-grad);color:#fff;border-color:transparent;box-shadow:0 12px 26px -16px rgba(15,107,99,.7);}
.chip .num{font-size:12px;opacity:.8;}

/* ---------- 区块标题 ---------- */
.section-head{margin-bottom:48px;}
.section-head h2{font-size:30px;display:flex;align-items:center;gap:14px;}
.section-head h2::before{
  content:"";width:4px;height:26px;border-radius:3px;background:var(--brand-grad);flex:none;
}
.section-head p{margin-top:14px;color:var(--text-2);max-width:780px;}
.section-head.with-link{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:all .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CDE3DE;}
.card:hover .card-title{color:var(--brand-deep);}
.card-media{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{font-size:20px;font-weight:700;transition:color .2s ease;}
.card-text{
  color:var(--text-2);font-size:15px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--border-2);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.card-meta{font-size:13px;color:var(--text-3);}

/* ---------- 宽幅推荐卡 ---------- */
.feature-list{display:flex;flex-direction:column;gap:24px;margin-top:24px;}
.feature{
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:0;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:all .22s ease;
}
.feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#CDE3DE;}
.feature:hover .feature-title{color:var(--brand-deep);}
.feature-media{position:relative;background:var(--bg-alt);min-height:280px;}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-body{padding:40px;display:flex;flex-direction:column;gap:16px;justify-content:center;}
.feature-title{font-size:24px;transition:color .2s ease;}
.feature-text{color:var(--text-2);font-size:16px;max-width:640px;}
.feature-points{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 要点清单 ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 32px;margin-top:8px;}
.check-item{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:all .2s ease;}
.check-item:hover{border-color:#CDE3DE;box-shadow:var(--shadow);transform:translateY(-2px);}
.check-icon{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--bg-alt);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;margin-top:2px;
}
.check-item h3{font-size:17px;}
.check-item p{color:var(--text-2);font-size:15px;margin-top:6px;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  min-height:64px;padding:16px 0;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-q .qmark{
  flex:none;width:28px;height:28px;border-radius:50%;background:var(--bg-alt);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
}
.faq-q .sign{
  margin-left:auto;flex:none;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--brand-mid);
  color:var(--brand-deep);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  transition:transform .22s ease,background .22s ease,color .22s ease;
}
.faq-item.is-open .faq-q .sign{background:var(--brand-grad);color:#fff;border-color:transparent;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
.faq-a-inner{padding:0 0 24px 44px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--brand-grad-dark);padding:72px 0;position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(53,201,168,.34),transparent 68%);
}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:30px;max-width:640px;}
.cta-inner p{color:rgba(255,255,255,.78);margin-top:14px;max-width:640px;font-size:16px;}
.cta-actions{display:flex;gap:16px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{background:var(--footer-bg);color:#fff;padding:72px 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;margin-bottom:16px;}
.footer-brand .logo-mark{background:rgba(255,255,255,.08);}
.footer-desc{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;max-width:360px;}
.footer h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:700;}
.footer-list li{margin-bottom:12px;font-size:14px;color:rgba(255,255,255,.72);}
.footer-list a{color:rgba(255,255,255,.72);}
.footer-list a:hover{color:var(--brand-light);text-decoration:underline;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-menu{margin-left:0;gap:0;}
  .nav-link{padding:0 10px;font-size:15px;}
  .container{padding:0 28px;}
  .page-head h1{font-size:38px;}
  .card-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
  .feature-body{padding:32px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .nav-secondary{display:none;}
  .nav-toggle{display:inline-flex;}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .feature{grid-template-columns:1fr;}
  .feature-media{min-height:220px;}
  .check-list{grid-template-columns:1fr;}
  .page-head{padding:44px 0 40px;}
  .page-head h1{font-size:32px;}
  .section-head h2{font-size:26px;}
  .cta-inner h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .topbar-note{display:none;}
  .topbar-inner{gap:12px;}
  .topbar-link{margin-left:auto;}
  .nav-inner{height:66px;gap:16px;}
  .logo-text{font-size:16px;}
  .nav-actions .btn-sm{display:none;}
  .section{padding:56px 0;}
  .page-head{padding:32px 0 32px;}
  .page-head h1{font-size:28px;}
  .page-head .lead{font-size:16px;margin-top:16px;}
  .chip-row{gap:10px;margin-top:24px;}
  .chip{height:40px;padding:0 16px;font-size:14px;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:22px;}
  .section-head h2::before{height:22px;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .card-body{padding:20px;}
  .card-title{font-size:18px;}
  .feature-body{padding:24px;}
  .feature-title{font-size:20px;}
  .feature-media{min-height:180px;}
  .faq-q{min-height:56px;font-size:16px;gap:12px;}
  .faq-a-inner{padding-left:0;}
  .cta-band{padding:56px 0;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer{padding:56px 0 28px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{min-height:48px;}
}