/* roulang page: index */
:root{
  --brand:#2438A6;
  --brand-dark:#182A7A;
  --brand-light:#E8ECFB;
  --teal:#0FA6B8;
  --teal-light:#E3F6F8;
  --orange:#F07A2B;
  --orange-dark:#D8671C;
  --orange-light:#FFF1E6;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --alt:#EEF2FB;
  --text:#0F1B33;
  --text-2:#4B5876;
  --text-3:#7D879F;
  --border:#E2E7F2;
  --border-2:#EDF0F7;
  --success:#2FA36B;
  --warn:#E0A020;
  --danger:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(16,26,51,.04),0 10px 24px rgba(16,26,51,.06);
  --sh-2:0 4px 8px rgba(16,26,51,.06),0 16px 36px rgba(16,26,51,.10);
  --sh-3:0 24px 48px rgba(16,26,51,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,form{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
img{display:block;max-width:100%;height:auto}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;margin:0}
button{cursor:pointer}
strong{font-weight:700}

.grid-container{max-width:1272px;margin-left:auto;margin-right:auto;padding-left:32px;padding-right:32px;width:100%}
.grid-x{margin-left:-14px;margin-right:-14px}
.grid-x>.cell{padding-left:14px;padding-right:14px}

/* ---------- 顶部工具条 ---------- */
.topbar{background:var(--alt);border-bottom:1px solid var(--border-2);font-size:13px;color:var(--text-2)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-note{display:flex;align-items:center;gap:8px}
.topbar-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.topbar-links{display:flex;gap:22px}
.topbar-links a:hover{color:var(--brand)}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border-2);transition:box-shadow .24s var(--ease),border-color .24s var(--ease)}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(16,26,51,.07);border-color:var(--border)}
.header-inner{display:flex;align-items:center;gap:22px;height:76px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(140deg,var(--brand),var(--teal));color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.3}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3);white-space:nowrap}

.nav-search{position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:520px;height:48px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:0 4px 0 42px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav-search svg{position:absolute;left:14px;width:18px;height:18px;color:var(--brand);opacity:.6;transition:opacity .2s}
.nav-search input{flex:1 1 auto;min-width:0;height:100%;border:0;outline:0;background:transparent;font-size:15px}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{flex-shrink:0;height:40px;padding:0 18px;border:0;border-radius:9px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;transition:background .2s var(--ease)}
.nav-search button:hover{background:var(--brand-dark)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.nav-search:focus-within svg{opacity:1}

.nav-links{display:flex;align-items:center;gap:22px;flex-shrink:0}
.nav-links a{position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .22s var(--ease)}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--brand);font-weight:600}
.nav-links a.is-active::after{width:100%}
.drawer-cta{display:none}

.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;flex-shrink:0}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:background .2s}
.nav-toggle:hover{border-color:var(--brand)}
.nav-toggle:hover span{background:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(36,56,166,.26)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-light)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--orange-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(240,122,43,.32)}
.btn-white{background:#fff;color:#B94E0C}
.btn-white:hover{background:#FFF6EE;transform:translateY(-1px)}
.btn-lg{height:50px;padding:0 30px;font-size:16px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative}
.text-link::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--brand);transition:width .22s var(--ease)}
.text-link:hover::after{width:100%}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 92px;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FC 100%)}
.hero-arc{position:absolute;width:760px;height:760px;border:1px solid rgba(36,56,166,.10);border-radius:50%;right:-300px;top:-260px;pointer-events:none}
.hero-arc2{position:absolute;width:520px;height:520px;border:1px solid rgba(15,166,184,.12);border-radius:50%;left:-240px;bottom:-280px;pointer-events:none}
.hero-grid{position:relative;z-index:2}
.hero-pill{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--r-pill);background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:20px}
.hero-pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.hero h1{font-size:42px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.75;color:var(--text-2);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:42px;margin-top:44px;padding-top:28px;border-top:1px solid var(--border)}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:28px;font-weight:700;line-height:1.2;color:var(--brand);letter-spacing:-.01em}
.hero-stats span{font-size:13px;color:var(--text-3);margin-top:6px}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;background:var(--alt)}
.hero-figure img{width:100%;height:100%;object-fit:cover}
.hero-figure .star{position:absolute;border-radius:50%;background:rgba(36,56,166,.14)}
.hero-figure .s1{width:4px;height:4px;top:20%;left:12%}
.hero-figure .s2{width:3px;height:3px;top:34%;left:24%}
.hero-figure .s3{width:5px;height:5px;top:16%;right:22%}
.hero-figure .s4{width:3px;height:3px;bottom:22%;right:14%}
.hero-figure .s5{width:4px;height:4px;bottom:32%;left:18%}
.hero-badge{position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.94);border-radius:12px;padding:12px 16px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px}
.hero-badge i{width:30px;height:30px;border-radius:50%;background:var(--teal-light);color:var(--teal);display:flex;align-items:center;justify-content:center;font-style:normal;font-weight:700;font-size:14px}
.hero-badge b{display:block;font-size:14px;font-weight:700}
.hero-badge small{display:block;font-size:12px;color:var(--text-3)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--alt)}
.section-head{max-width:740px;margin-bottom:52px}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--teal);letter-spacing:.08em;margin-bottom:12px}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text-2)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;max-width:none}

/* ---------- 优惠阶梯 ---------- */
.tier-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:end}
.tier{position:relative;display:flex;flex-direction:column;padding:26px 24px;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);background:#fff;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.tier:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6DDF3}
.tier-1{min-height:196px;background:#fff}
.tier-2{min-height:234px;background:#FBFCFF}
.tier-3{min-height:272px;background:var(--brand-light)}
.tier-4{min-height:310px;background:var(--brand-dark);border-color:transparent;color:#fff}
.tier-no{width:34px;height:34px;border-radius:10px;background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;margin-bottom:16px;box-shadow:0 1px 3px rgba(16,26,51,.08)}
.tier-3 .tier-no{background:var(--teal);color:#fff}
.tier-4 .tier-no{background:var(--orange);color:#fff;box-shadow:none}
.tier-name{font-size:18px;font-weight:700;letter-spacing:-.01em}
.tier-note{margin-top:6px;font-size:13px;color:var(--text-3)}
.tier-4 .tier-name{color:#fff}
.tier-4 .tier-note{color:rgba(255,255,255,.7)}
.tier-list{display:flex;flex-direction:column;gap:10px;margin-top:18px;flex:1 1 auto}
.tier-list li{position:relative;padding-left:18px;font-size:14px;line-height:1.7;color:var(--text-2)}
.tier-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--teal)}
.tier-4 .tier-list li{color:rgba(255,255,255,.86)}
.tier-4 .tier-list li::before{background:var(--orange)}
.tier-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.tier-3 .tier-foot{border-top-color:#D3DBF6}
.tier-4 .tier-foot{border-top-color:rgba(255,255,255,.18)}
.tier-price{font-size:22px;font-weight:700;color:var(--orange);letter-spacing:-.01em}
.tier-price small{font-size:13px;font-weight:400;color:var(--text-3)}
.tier-4 .tier-price{color:#FFB27A}
.tier-4 .tier-price small{color:rgba(255,255,255,.66)}

/* ---------- 套餐对比 ---------- */
.cmp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cmp-col{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.cmp-col:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.cmp-col.is-featured{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),var(--sh-2)}
.cmp-head{padding:24px 20px 20px;border-bottom:1px solid var(--border-2);text-align:center}
.cmp-head h3{font-size:17px;font-weight:700}
.cmp-head .cmp-price{margin-top:10px;font-size:26px;font-weight:700;color:var(--text);letter-spacing:-.01em}
.cmp-head .cmp-price span{font-size:13px;font-weight:400;color:var(--text-3)}
.badge-rec{position:absolute;top:14px;right:14px;background:var(--orange);color:#fff;font-size:12px;font-weight:600;padding:3px 10px;border-radius:var(--r-pill)}
.cmp-rows{padding:8px 0}
.cmp-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 20px;font-size:14px;color:var(--text-2);border-bottom:1px dashed var(--border-2)}
.cmp-row:last-child{border-bottom:0}
.cmp-row i{font-style:normal;font-weight:700;color:var(--success);font-size:15px}
.cmp-row i.off{color:#C3CADB}
.cmp-foot{padding:16px 20px 22px}
.cmp-foot .btn{width:100%}

/* ---------- 限时入口 ---------- */
.flashbar{background:linear-gradient(115deg,#F5873B 0%,#E2661A 100%);color:#fff;position:relative;overflow:hidden}
.flashbar::before{content:"";position:absolute;width:340px;height:340px;border:1px solid rgba(255,255,255,.22);border-radius:50%;right:-120px;top:-160px}
.flashbar::after{content:"";position:absolute;width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.5);left:8%;top:34%}
.flash-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;padding:30px 0}
.flash-text{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.flash-tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:rgba(255,255,255,.22);font-size:12px;font-weight:700;letter-spacing:.06em}
.flash-text strong{font-size:21px;font-weight:700;letter-spacing:-.01em}
.flash-deadline{display:flex;flex-direction:column;line-height:1.35}
.flash-deadline b{font-size:15px;font-weight:700}
.flash-deadline span{font-size:13px;color:rgba(255,255,255,.82)}

/* ---------- 资讯列表 ---------- */
.news-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D6DDF3}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--alt)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;flex:1 1 auto;padding:20px 22px 22px}
.tag{display:inline-flex;align-items:center;align-self:flex-start;height:24px;padding:0 11px;border-radius:var(--r-pill);background:var(--teal-light);color:#0B7E8C;font-size:12px;font-weight:600;margin-bottom:12px}
.news-body h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;padding-top:16px;border-top:1px solid var(--border-2);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}
.empty-state{padding:64px 24px;text-align:center;background:#fff;border:1px dashed var(--border);border-radius:var(--r-card)}
.empty-state i{display:flex;width:56px;height:56px;margin:0 auto 18px;border-radius:50%;background:var(--brand-light);color:var(--brand);align-items:center;justify-content:center;font-style:normal;font-size:22px;font-weight:700}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:20px}

/* ---------- 使用反馈 ---------- */
.quote-card{display:flex;flex-direction:column;height:100%;padding:26px 24px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.quote-mark{font-size:30px;font-weight:700;color:var(--brand-light);line-height:1;margin-bottom:10px}
.quote-card p{font-size:15px;line-height:1.85;color:var(--text-2);flex:1 1 auto}
.quote-user{margin-top:22px;padding-top:18px;border-top:1px solid var(--border-2);display:flex;align-items:center;gap:12px}
.quote-user img{width:44px;height:44px;border-radius:50%;object-fit:cover;flex-shrink:0}
.quote-user b{display:block;font-size:14px;font-weight:700}
.quote-user span{display:block;font-size:12.5px;color:var(--text-3)}
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px;padding:28px 24px;background:var(--teal-light);border-radius:var(--r-card)}
.metric-strip li{text-align:center}
.metric-strip strong{display:block;font-size:26px;font-weight:700;color:#0B7E8C;letter-spacing:-.01em;line-height:1.3}
.metric-strip span{display:block;font-size:13px;color:var(--text-2);margin-top:6px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-item{border-bottom:1px solid var(--border);background:transparent}
.faq-item summary{position:relative;list-style:none;cursor:pointer;padding:22px 48px 22px 20px;font-size:16px;font-weight:600;line-height:1.6;transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";position:absolute;left:0;top:50%;width:3px;height:22px;border-radius:2px;background:var(--brand);transform:translateY(-50%) scaleY(0);transition:transform .22s var(--ease)}
.faq-item summary::after{content:"+";position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--brand);transition:transform .22s var(--ease)}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::before{transform:translateY(-50%) scaleY(1)}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 48px 24px 20px;font-size:15.5px;line-height:1.85;color:var(--text-2)}

/* ---------- 咨询表单 ---------- */
.consult{display:grid;grid-template-columns:1fr 1.15fr;gap:56px;align-items:start}
.consult-info h2{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
.consult-info>p{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2)}
.consult-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.consult-points li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2)}
.consult-points li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%;background:var(--brand-light);box-shadow:inset 0 0 0 4px #fff}
.consult-points li::after{content:"";position:absolute;left:4.5px;top:13.5px;width:5px;height:5px;border-radius:50%;background:var(--brand)}
.consult-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:30px 28px 32px}
.consult-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.consult-card>p{font-size:14px;color:var(--text-3);margin-bottom:22px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:14px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--border);border-radius:var(--r-input);background:#fff;font-size:15px;outline:0;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.field textarea{height:auto;min-height:118px;padding:12px 14px;line-height:1.75;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.field input::placeholder,.field textarea::placeholder{color:#A6AEC4}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7;margin:4px 0 22px}
.agree input{width:17px;height:17px;margin-top:4px;flex-shrink:0;accent-color:var(--brand)}
.agree a{color:var(--brand);text-decoration:underline}
.form-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;flex-wrap:wrap}
.form-hint{font-size:13px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--alt);border-top:1px solid var(--border);padding-top:64px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-2);max-width:320px}
.footer-contact{margin-top:18px;font-size:14px;color:var(--text-2)}
.footer-contact b{display:block;font-size:16px;color:var(--brand);font-weight:700;margin-top:4px;letter-spacing:.01em}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.footer-bottom .fb-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .tier-row{gap:18px}
  .hero h1{font-size:38px}
}
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .header-inner{flex-wrap:wrap;height:auto;padding-top:12px;padding-bottom:12px;gap:12px}
  .brand{order:1;flex:1 1 auto}
  .brand-text strong{font-size:16px}
  .nav-toggle{order:2;display:flex}
  .nav-search{order:3;flex:1 1 100%;max-width:none;height:46px}
  .nav-cta{display:none}
  .nav-links{position:fixed;top:0;right:0;bottom:0;width:290px;max-width:86vw;background:#fff;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:4px;padding:92px 24px 28px;box-shadow:-16px 0 44px rgba(16,26,51,.16);transform:translateX(105%);transition:transform .28s var(--ease);z-index:60;overflow-y:auto}
  .nav-links.is-open{transform:translateX(0)}
  .nav-links a{width:100%;padding:14px 0;border-bottom:1px solid var(--border-2);font-size:16px;white-space:normal}
  .nav-links a::after{display:none}
  .drawer-cta{display:inline-flex;margin-top:20px;border-bottom:0 !important;width:100%}
  .hero{padding:56px 0 72px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:17px}
  .hero-figure{margin-top:40px}
  .tier-row{grid-template-columns:repeat(2,1fr);align-items:stretch}
  .tier,.tier-1,.tier-2,.tier-3,.tier-4{min-height:0}
  .cmp-grid{grid-template-columns:repeat(2,1fr)}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .consult{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-about{max-width:none}
}
@media (max-width:767px){
  .topbar-inner{height:auto;padding-top:8px;padding-bottom:8px;flex-direction:column;align-items:flex-start;gap:4px}
  .topbar{font-size:12.5px}
  .topbar-links{gap:16px}
  .hero-stats{gap:28px}
  .hero-stats strong{font-size:24px}
  .section-head h2,.consult-info h2{font-size:23px}
  .section-head{margin-bottom:36px}
  .flash-text strong{font-size:18px}
  .form-row{grid-template-columns:1fr}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .faq-item summary{font-size:15.5px;padding-right:42px}
  .faq-body{padding-right:24px}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:28px;line-height:1.35}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .brand-text em{display:none}
  .tier-row{grid-template-columns:1fr}
  .cmp-grid{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr 1fr;gap:16px;padding:22px 16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .flash-inner{flex-direction:column;align-items:flex-start}
  .flashbar .btn{width:100%}
  .consult-card{padding:24px 18px 26px}
  .hero-badge{left:12px;bottom:12px;padding:10px 12px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
}

/* roulang page: article */
:root{
  --brand:#2438A6;
  --brand-deep:#182A7A;
  --brand-soft:#E8ECFB;
  --accent:#0FA6B8;
  --accent-soft:#E3F6F8;
  --orange:#F07A2B;
  --orange-soft:#FFF1E6;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --alt:#EEF2FB;
  --text:#0F1B33;
  --text-2:#4B5876;
  --text-3:#7D879F;
  --line:#E2E7F2;
  --line-soft:#EDF0F7;
  --ok:#2FA36B;
  --warn:#E0A020;
  --err:#D9534F;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 2px 4px rgba(16,26,51,.04),0 10px 24px rgba(16,26,51,.06);
  --sh-2:0 4px 8px rgba(16,26,51,.06),0 16px 36px rgba(16,26,51,.10);
  --sh-3:0 24px 48px rgba(16,26,51,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-deep)}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-0.01em;color:var(--text)}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container,.grid-container{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.grid-container{max-width:1264px}

/* ============ 顶部工具条 ============ */
.topbar{background:var(--alt);border-bottom:1px solid var(--line);font-size:13px;color:var(--text-2)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-inner span{display:inline-flex;align-items:center;gap:8px}
.topbar-inner i{color:var(--accent);font-size:12px}
.topbar-right{display:flex;align-items:center;gap:20px}
.topbar-right a{color:var(--text-2)}
.topbar-right a:hover{color:var(--brand)}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .22s var(--ease)}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(16,26,51,.08)}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;flex:0 0 auto;border-radius:13px;
  background:linear-gradient(135deg,#2438A6 0%,#0FA6B8 100%);
  color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;
  box-shadow:0 6px 16px rgba(36,56,166,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--text-3);white-space:nowrap}
.nav-search{
  position:relative;display:flex;align-items:center;flex:1 1 auto;
  max-width:500px;height:46px;background:#fff;border:1px solid var(--line);
  border-radius:12px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.nav-search i{position:absolute;left:16px;font-size:15px;color:rgba(36,56,166,.6);transition:color .2s var(--ease)}
.nav-search:focus-within i{color:var(--brand)}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;outline:none;
  padding:0 100px 0 44px;font-size:15px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search button{
  position:absolute;right:4px;top:4px;bottom:4px;width:76px;border:0;border-radius:9px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s var(--ease);
}
.nav-search button:hover{background:var(--brand-deep)}
.nav-links{display:flex;align-items:center;gap:22px;flex:0 0 auto}
.nav-links a{position:relative;font-size:15px;color:var(--text-2);padding:6px 0}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--brand);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--brand);align-items:center;justify-content:center;font-size:17px;
}
.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 14px}
.nav-drawer a{display:block;padding:12px 0;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--line-soft)}
.nav-drawer a:last-child{border-bottom:0}
.nav-drawer a.is-active{color:var(--brand);font-weight:600}
.nav-drawer.open{display:block}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-align:center;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#1d2f8e;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:#dc6a1f;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand)}
.text-link:hover{gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-accent{background:var(--orange-soft);color:#B8520F}
.badge-teal{background:var(--accent-soft);color:#0A7D8C}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;background-color:var(--alt);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::after{content:"";position:absolute;inset:0;background:rgba(245,247,252,.92)}
.article-hero .hero-inner{position:relative;z-index:1;padding:30px 0 46px}
.crumbs{font-size:13.5px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C3CBDE}
.crumbs .cur{color:var(--brand);font-weight:600}
.article-head{max-width:900px}
.article-head h1{font-size:40px;line-height:1.28;margin:14px 0 18px;letter-spacing:-0.015em}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--text-3)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--accent);font-size:13px}

/* ============ 主体布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:48px;
  padding:48px 0 96px;align-items:start;
}
.article-main{min-width:0}
.article-lead{
  background:var(--brand-soft);border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;padding:20px 24px;margin-bottom:34px;
  font-size:15.5px;line-height:1.85;color:#31405F;
}
.article-lead strong{color:var(--brand-deep)}

.article-content{max-width:820px;font-size:17px;line-height:1.9;color:#1B2540}
.article-content p{margin:0 0 1.05em}
.article-content h2{
  font-size:24px;line-height:1.45;margin:2em 0 .75em;padding-left:14px;
  border-left:4px solid var(--brand);
}
.article-content h2:first-child{margin-top:0}
.article-content h3{font-size:19px;margin:1.7em 0 .6em;color:var(--brand-deep)}
.article-content h4{font-size:17px;margin:1.4em 0 .5em}
.article-content ul,.article-content ol{padding-left:1.35em;margin:0 0 1.1em}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin:.42em 0;line-height:1.8}
.article-content img{border-radius:12px;margin:1.5em auto;box-shadow:var(--sh-1)}
.article-content figure{margin:1.5em 0}
.article-content figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-content blockquote{
  margin:1.3em 0;padding:16px 22px;background:var(--alt);
  border-left:3px solid var(--brand);border-radius:0 10px 10px 0;color:var(--text-2);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content a{color:var(--brand);border-bottom:1px solid rgba(36,56,166,.35)}
.article-content a:hover{border-bottom-color:var(--brand)}
.article-content strong{font-weight:700;color:#0B1430}
.article-content hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:1.4em 0;background:#fff}
.article-content th,.article-content td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-content th{background:var(--alt);font-weight:600;color:var(--brand-deep)}
.article-content code{background:var(--alt);border-radius:6px;padding:2px 6px;font-size:14.5px}

.article-empty{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:56px 32px;text-align:center;
}
.article-empty i{font-size:34px;color:var(--text-3);margin-bottom:16px;display:block}
.article-empty h2{font-size:22px;margin-bottom:10px}
.article-empty p{color:var(--text-2);margin-bottom:22px}

.article-actions{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.back-link{font-size:15px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.back-link:hover{gap:10px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:22px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px 22px 20px}
.side-card h3{font-size:17px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.side-list li+li{margin-top:4px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-list a:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(3px)}
.side-list i{font-size:12px;color:var(--text-3)}
.side-cta{background:linear-gradient(160deg,#F3F6FF 0%,#E8ECFB 100%);border-color:#D9E0F8}
.side-cta h3{border-bottom-color:#D9E0F8}
.side-cta p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.side-points{margin:16px 0 20px;display:flex;flex-direction:column;gap:10px}
.side-points li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:#33405E}
.side-points i{color:var(--accent);margin-top:5px;font-size:12px}

/* ============ 相关推荐 ============ */
.related{margin-top:56px}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.related-head h2{font-size:24px}
.related-head p{font-size:14.5px;color:var(--text-3);margin:6px 0 0}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3DBF0}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--alt)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.03)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:16.5px;line-height:1.55;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover h3{color:var(--brand)}
.rel-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);margin-top:auto}

/* ============ FAQ ============ */
.faq-section{padding:88px 0;background:#fff;border-top:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand);background:var(--brand-soft);padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:29px;line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15.5px;margin:0}
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px;align-items:start}
.faq-item{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;
  padding:0 20px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{background:#fff;border-color:#CFD8F2;box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:14px;padding:18px 0;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-size:12px;margin-top:3px;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary .plus{background:var(--brand);color:#fff;transform:rotate(180deg);border-color:var(--brand)}
.faq-body{font-size:15.5px;line-height:1.85;color:var(--text-2);padding:0 0 20px;border-top:1px solid var(--line-soft);padding-top:16px}
.faq-body p:last-child{margin-bottom:0}

/* ============ CTA ============ */
.cta-band{background:var(--brand-deep);padding:44px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-inner h2{font-size:24px;color:#fff;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin:0;max-width:660px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-actions .btn-primary{background:var(--orange);color:#fff}
.cta-actions .btn-primary:hover{background:#dc6a1f}
.cta-actions .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--alt);border-top:1px solid var(--line);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-text strong{font-size:16px}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-2);max-width:360px;margin-bottom:18px}
.footer-contact{
  display:inline-flex;flex-direction:column;gap:2px;font-size:13px;color:var(--text-3);
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 18px;
}
.footer-contact b{font-size:15px;color:var(--brand);font-weight:700}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid #DCE3F3;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.fb-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.fb-links a{color:var(--text-3)}
.fb-links a:hover{color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px}
  .related-grid{gap:20px}
}
@media (max-width:1024px){
  .container,.grid-container{padding-left:24px;padding-right:24px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-search{max-width:none}
  .article-layout{grid-template-columns:1fr;gap:40px;padding:40px 0 72px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 300px}
  .article-head h1{font-size:34px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .topbar-right a:first-child{display:none}
  .article-head h1{font-size:29px}
  .article-content{font-size:16.5px}
  .article-content h2{font-size:21px}
  .article-lead{padding:18px 20px;font-size:15px}
  .faq-section{padding:56px 0}
  .section-head h2{font-size:23px}
  .related-grid{grid-template-columns:1fr}
  .related-head{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:640px){
  .container,.grid-container{padding-left:16px;padding-right:16px}
  .topbar-inner{height:auto;padding:8px 0;flex-direction:column;align-items:flex-start;gap:4px}
  .topbar-right{gap:14px}
  .nav-inner{flex-wrap:wrap;min-height:0;padding:12px 0;gap:12px}
  .nav-search{order:3;flex:1 0 100%;max-width:none;height:44px}
  .nav-search button{width:64px}
  .brand-text em{display:none}
  .article-hero .hero-inner{padding:22px 0 34px}
  .article-head h1{font-size:25px}
  .article-meta{gap:8px 16px;font-size:13px}
  .article-content{font-size:16px;line-height:1.85}
  .article-content h2{font-size:19.5px}
  .article-content h3{font-size:17.5px}
  .article-empty{padding:40px 20px}
  .article-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --primary:#2438A6;
  --primary-dark:#182A7A;
  --primary-light:#E8ECFB;
  --accent:#0FA6B8;
  --accent-light:#E3F6F8;
  --orange:#F07A2B;
  --orange-light:#FFF1E6;
  --bg:#F5F7FC;
  --bg-alt:#EEF2FB;
  --card:#FFFFFF;
  --text:#0F1B33;
  --text-2:#4B5876;
  --text-3:#7D879F;
  --border:#E2E7F2;
  --border-soft:#EDF0F7;
  --ok:#2FA36B;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-1:0 2px 4px rgba(16,26,51,.04),0 10px 24px rgba(16,26,51,.06);
  --shadow-2:0 4px 8px rgba(16,26,51,.06),0 16px 36px rgba(16,26,51,.10);
  --shadow-3:0 24px 48px rgba(16,26,51,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4{font-family:inherit;color:var(--text);letter-spacing:-.01em;line-height:1.3;margin:0}
h1{font-size:42px;font-weight:700}
h2{font-size:30px;font-weight:700}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
.grid-container{max-width:1240px;width:100%;margin:0 auto;padding-left:32px;padding-right:32px}
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.02em;
  color:var(--accent);background:var(--accent-light);padding:5px 12px;border-radius:999px;
}
.section-head{margin-bottom:40px}
.section-head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px}
.section-head h2{margin:14px 0 10px}
.section-head p{font-size:16px;color:var(--text-2);max-width:660px;margin:0}
.text-link{font-size:15px;font-weight:600;color:var(--primary);white-space:nowrap}
.text-link:hover{color:var(--primary-dark)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(36,56,166,.22)}
.btn-primary:hover{background:#1e2f8d;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(36,56,166,.28)}
.btn-ghost{background:#fff;color:var(--primary);border-color:rgba(36,56,166,.35)}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);transform:translateY(-1px)}
.btn-accent{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(240,122,43,.25)}
.btn-accent:hover{background:#dd6a1c;color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.tag{display:inline-block;font-size:12.5px;font-weight:600;color:var(--primary-dark);background:var(--primary-light);padding:4px 12px;border-radius:999px}
.tag-accent{color:#c25712;background:var(--orange-light)}

/* 顶部工具条 */
.topbar{background:var(--bg-alt);border-bottom:1px solid var(--border-soft);font-size:13px;color:var(--text-2)}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px}
.topbar-inner a{color:var(--text-2)}
.topbar-inner a:hover{color:var(--primary)}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-dot{color:var(--text-3)}
.topbar-dot::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--ok);margin-right:7px;vertical-align:middle}

/* 导航 */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s var(--ease)}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(16,26,51,.08)}
.nav-bar{display:flex;align-items:center;gap:22px;min-height:76px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--primary),#3a55d0);
  color:#fff;display:grid;place-items:center;font-size:19px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--text)}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-3)}
.nav-search{position:relative;flex:1 1 auto;max-width:520px;display:flex;align-items:center}
.nav-search .s-icon{position:absolute;left:15px;width:18px;height:18px;color:rgba(36,56,166,.6);pointer-events:none}
.nav-search input{
  width:100%;height:46px;border:1px solid var(--border);border-radius:12px;
  padding:0 96px 0 44px;font-size:15px;color:var(--text);background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.nav-search .s-btn{
  position:absolute;right:5px;height:36px;padding:0 16px;border:0;border-radius:9px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color .2s var(--ease);
}
.nav-search .s-btn:hover{background:var(--primary-dark)}
.nav-links{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.nav-link{position:relative;padding:10px 12px;font-size:15px;color:var(--text-2);border-radius:8px}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-cta{flex:0 0 auto}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;padding:0;place-items:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:4px auto;border-radius:2px;transition:.2s var(--ease)}
.drawer{
  position:fixed;top:0;right:0;width:min(340px,88vw);height:100%;background:#fff;z-index:120;
  border-left:1px solid var(--border);box-shadow:var(--shadow-3);padding:24px;
  transform:translateX(105%);transition:transform .28s var(--ease);overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,51,.35);z-index:110;opacity:0;visibility:hidden;transition:.25s var(--ease)}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-close{display:flex;justify-content:flex-end}
.drawer-close button{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);background:#fff;font-size:18px;cursor:pointer;color:var(--text-2)}
.drawer-search{display:flex;gap:8px;margin:18px 0 22px}
.drawer-search input{flex:1;height:44px;border:1px solid var(--border);border-radius:10px;padding:0 14px;font-size:15px}
.drawer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.drawer-search button{height:44px;padding:0 16px;border:0;border-radius:10px;background:var(--primary);color:#fff;font-weight:600;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-nav a{padding:13px 14px;border-radius:10px;font-size:15px;color:var(--text-2);border:1px solid transparent}
.drawer-nav a:hover{background:var(--bg-alt);color:var(--primary)}
.drawer-nav a.active{background:var(--primary-light);color:var(--primary-dark);font-weight:600;border-color:rgba(36,56,166,.18)}

/* 面包屑 */
.breadcrumb{font-size:13.5px;color:var(--text-3);padding:22px 0 0}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 8px;color:var(--border)}
.breadcrumb .current{color:var(--primary);font-weight:600}

/* Hero */
.hero{padding:8px 0 64px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-40px;right:8%;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(36,56,166,.10),rgba(36,56,166,0) 68%);
  pointer-events:none;
}
.hero-grid{gap:48px;align-items:center;margin-top:28px}
.hero-copy h1{margin:16px 0 18px}
.hero-copy .lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-media{position:relative}
.hero-media img{width:100%;height:320px;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-2)}
.hero-media::after{
  content:"";position:absolute;left:-18px;bottom:-18px;width:120px;height:120px;border-radius:50%;
  border:1px solid rgba(36,56,166,.16);pointer-events:none;
}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts span{font-size:13px;color:var(--text-2);background:#fff;border:1px solid var(--border);padding:6px 14px;border-radius:999px}

/* 条目卡 */
.entry-grid{gap:28px}
.entry-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px;display:flex;gap:20px;box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.entry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#d5ddf5}
.entry-icon{
  width:52px;height:52px;border-radius:14px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--primary-light);color:var(--primary);
}
.entry-icon svg{width:24px;height:24px}
.entry-body h3{margin:4px 0 10px}
.entry-body .entry-desc{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:14px}
.entry-points{list-style:none;padding:0;margin:0 0 20px}
.entry-points li{position:relative;padding-left:20px;font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:6px}
.entry-points li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;
  background:var(--accent);
}

/* 数据条 */
.stat-band{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  padding:36px 28px;
}
.stat-item{text-align:center;padding:0 16px;border-right:1px solid var(--border-soft)}
.stat-item:last-child{border-right:0}
.stat-num{font-size:32px;font-weight:700;color:var(--primary);line-height:1.2}
.stat-label{font-size:14px;color:var(--text-2);margin-top:8px}

/* 准备清单 */
.prep-grid{gap:52px;align-items:center}
.prep-media img{width:100%;height:340px;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-2)}
.check-list{list-style:none;padding:0;margin:22px 0 0}
.check-list li{display:flex;gap:14px;padding:15px 0;border-bottom:1px dashed var(--border)}
.check-list li:last-child{border-bottom:0}
.check-mark{
  width:26px;height:26px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
  background:var(--accent-light);color:var(--accent);font-size:13px;font-weight:700;margin-top:3px;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--text);margin-bottom:2px}
.check-list span{font-size:14.5px;color:var(--text-2)}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--border-soft)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 26px;font-size:16px;font-weight:600;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .2s var(--ease),background-color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;font-weight:400;color:var(--primary);transition:transform .25s var(--ease)}
.faq-item summary:hover{color:var(--primary);background:#fafbff}
.faq-item[open] summary{color:var(--primary)}
.faq-item[open] summary::after{content:"−"}
.faq-answer p{font-size:15.5px;line-height:1.85;color:var(--text-2);margin:0}
.faq-answer{padding:0 26px 22px 26px;border-left:3px solid var(--primary);margin:0 0 20px 26px;padding-left:18px}

/* 交叉入口 */
.cross-card{
  background:linear-gradient(120deg,#ffffff 0%,var(--bg-alt) 100%);
  border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.cross-card h3{margin-bottom:8px}
.cross-card p{font-size:15px;color:var(--text-2);max-width:660px;margin:0}

/* 咨询表单 */
.consult{
  background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-1);
  padding:44px;display:grid;grid-template-columns:0.85fr 1.15fr;gap:52px;
}
.consult h2{margin:14px 0 12px}
.consult ul{list-style:none;padding:0;margin:20px 0 0}
.consult ul li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:8px}
.consult ul li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--primary)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field.full{grid-column:1 / -1}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:15px;color:var(--text);background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input,.field select{height:48px;padding:0 14px}
.field textarea{min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--text-2);grid-column:1 / -1}
.consent input{width:16px;height:16px;margin-top:3px;flex:0 0 auto}
.form-foot{grid-column:1 / -1;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.form-note{font-size:13px;color:var(--text-3)}

/* 页脚 */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--border);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:var(--text-2);max-width:340px}
.footer-contact{margin-top:18px;font-size:13px;color:var(--text-3)}
.footer-contact b{display:block;color:var(--primary);font-size:15px;margin-top:4px}
.footer-col h4{font-size:15px;font-weight:700;margin:0 0 16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--border);padding:20px 0 30px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.fb-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.fb-links a{color:var(--text-3)}
.fb-links a:hover{color:var(--primary)}

/* 响应式 */
@media screen and (max-width:1180px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-toggle{display:grid}
  .nav-search{max-width:none}
}
@media screen and (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px}
  h1{font-size:34px}
  h2{font-size:26px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .entry-grid{gap:22px}
  .entry-card{flex-direction:column}
  .stat-band{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 0;padding:30px 20px}
  .stat-item:nth-child(2){border-right:0}
  .prep-grid{gap:34px}
  .prep-media img{height:280px}
  .consult{grid-template-columns:1fr;gap:32px;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cross-card{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:768px){
  .nav-search{display:none}
  .nav-bar{gap:12px;min-height:66px}
  .hero{padding-bottom:44px}
  .hero-media img{height:230px}
  .hero::after{display:none}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:14px}
  .form-grid{grid-template-columns:1fr}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .section{padding:52px 0}
  .section-tight{padding:44px 0}
  .topbar-links{display:none}
  .entry-card{padding:22px}
  .stat-band{grid-template-columns:1fr;gap:0;padding:26px 18px}
  .stat-item{border-right:0;border-bottom:1px solid var(--border-soft);padding:16px 0}
  .stat-item:last-child{border-bottom:0}
  .faq-answer{margin-left:16px;padding-right:16px}
  .faq-item summary{padding:18px 18px;font-size:15.5px}
  .consult{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --brand:#2438A6;--brand-deep:#182A7A;--brand-mid:#2E45C4;--brand-light:#E8ECFB;
  --cyan:#0FA6B8;--cyan-light:#E3F6F8;
  --accent:#F07A2B;--accent-light:#FFF1E6;
  --bg:#F5F7FC;--surface:#FFFFFF;--alt:#EEF2FB;
  --text:#0F1B33;--text-2:#4B5876;--text-3:#7D879F;
  --border:#E2E7F2;--border-soft:#EDF0F7;
  --ok:#2FA36B;--warn:#E0A020;--err:#D9534F;
  --r-card:16px;--r-btn:10px;--r-input:10px;--r-pill:999px;
  --sh-1:0 2px 4px rgba(16,26,51,.04),0 10px 24px rgba(16,26,51,.06);
  --sh-2:0 4px 8px rgba(16,26,51,.06),0 16px 36px rgba(16,26,51,.10);
  --sh-3:0 24px 48px rgba(16,26,51,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;font-weight:400;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background:transparent;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text);font-family:inherit}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.grid-container{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}
.section{padding:96px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--alt)}
.section-head{margin-bottom:44px;max-width:820px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-light);border-radius:var(--r-pill);padding:5px 14px;letter-spacing:.02em}
.section-head h2{font-size:30px;margin:16px 0 12px}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.85;max-width:760px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative;padding-bottom:3px}
.text-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--brand);transition:width .25s var(--ease)}
.text-link:hover::after{width:100%}

/* 顶部工具条 */
.topbar{background:#EEF2FB;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-2)}
.topbar .grid-container{display:flex;justify-content:space-between;align-items:center;min-height:38px;gap:16px}
.topbar b{color:var(--brand);font-weight:600}
.topbar .topbar-links{display:flex;gap:18px}
.topbar .topbar-links a:hover{color:var(--brand)}

/* 导航 */
.site-header{position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s var(--ease)}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:74px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{width:42px;height:42px;border-radius:13px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;box-shadow:0 6px 16px rgba(36,56,166,.28)}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:17px;font-weight:700;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:12px;color:var(--text-3)}
.nav-cats{display:flex;align-items:center;gap:20px;flex:0 0 auto}
.nav-cats a{font-size:15px;color:var(--text-2);font-weight:500;padding:6px 2px;position:relative}
.nav-cats a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.nav-cats a:hover{color:var(--brand)}
.nav-cats a:hover::after,.nav-cats a.is-active::after{transform:scaleX(1)}
.nav-cats a.is-active{color:var(--brand);font-weight:600}
.nav-search{position:relative;flex:1 1 300px;max-width:460px;margin-left:4px}
.nav-search input{width:100%;height:47px;border:1px solid var(--border);border-radius:12px;background:#fff;padding:0 56px 0 44px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(36,56,166,.12);outline:none}
.nav-search .s-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:rgba(36,56,166,.6);font-size:15px;transition:color .2s var(--ease)}
.nav-search:focus-within .s-icon{color:var(--brand)}
.nav-search .s-btn{position:absolute;right:5px;top:50%;transform:translateY(-50%);width:37px;height:37px;border-radius:9px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;transition:background .2s var(--ease),transform .2s var(--ease)}
.nav-search .s-btn:hover{background:var(--brand-mid);transform:translateY(-50%) translateY(-1px)}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto}
.mobile-toggle{display:none;width:44px;height:44px;border-radius:11px;border:1px solid var(--border);color:var(--brand);font-size:18px;align-items:center;justify-content:center;background:#fff}
.mobile-search{display:none;padding:0 32px 14px}
.mobile-search .nav-search{max-width:none;flex:none;margin:0}

/* 抽屉 */
.nav-drawer{position:fixed;inset:0 0 0 auto;width:min(86vw,340px);background:#fff;box-shadow:var(--sh-3);transform:translateX(102%);transition:transform .3s var(--ease);z-index:200;padding:24px;overflow-y:auto}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,51,.42);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s;z-index:190}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:10px;border:1px solid var(--border);color:var(--text-2);font-size:16px}
.drawer-nav li{margin-bottom:6px}
.drawer-nav a{display:flex;justify-content:space-between;align-items:center;padding:14px 14px;border-radius:12px;font-size:16px;font-weight:500;color:var(--text-2);border:1px solid transparent}
.drawer-nav a:hover{background:var(--brand-light);color:var(--brand)}
.drawer-nav a.is-active{background:var(--brand-light);color:var(--brand);font-weight:600;border-color:rgba(36,56,166,.16)}
.drawer-cta{margin-top:20px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:47px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;transition:all .2s var(--ease);white-space:nowrap;border:1px solid transparent}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(36,56,166,.22)}
.btn-primary:hover{background:var(--brand-mid);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
.btn-outline:hover{background:var(--brand-light);color:var(--brand);transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(240,122,43,.24)}
.btn-accent:hover{background:#DC6820;color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:translateY(0)}

/* 面包屑 */
.crumb{font-size:13.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-top:22px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CBDD}
.crumb .now{color:var(--brand);font-weight:600}

/* Hero */
.page-hero{padding:26px 0 56px}
.hero-panel{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;background:var(--alt);border:1px solid var(--border);border-radius:20px;padding:44px 44px 44px 48px;position:relative;overflow:hidden;min-height:280px}
.hero-panel::before{content:"";position:absolute;width:180px;height:180px;border-radius:50%;border:1px solid rgba(36,56,166,.10);left:-60px;bottom:-70px}
.hero-dots{position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(rgba(36,56,166,.12) 2px,transparent 2px);background-size:34px 34px;opacity:.55;mask-image:linear-gradient(120deg,rgba(0,0,0,.7),transparent 62%);-webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.7),transparent 62%)}
.hero-panel h1{font-size:38px;line-height:1.28;margin:14px 0 16px;position:relative}
.hero-panel .hero-lead{font-size:16.5px;color:var(--text-2);line-height:1.9;max-width:560px;position:relative}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;position:relative}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--brand);background:#fff;border:1px solid rgba(36,56,166,.16);border-radius:var(--r-pill);padding:7px 14px}
.chip i{font-size:12px;color:var(--cyan)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:18px;box-shadow:var(--sh-1)}
.hero-arc{position:absolute;width:150px;height:150px;border:1px solid rgba(36,56,166,.16);border-radius:50%;right:-40px;top:-28px}

/* 数据条 */
.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;background:var(--cyan-light);border:1px solid rgba(15,166,184,.18);border-radius:18px;padding:26px 28px}
.stat b{display:block;font-size:30px;font-weight:700;color:var(--brand-deep);line-height:1.2}
.stat span{font-size:14px;color:var(--text-2)}
.stat small{display:block;font-size:12.5px;color:var(--text-3);margin-top:4px}

/* 时间轴 */
.timeline{margin-top:8px}
.tl-item{position:relative;padding:0 0 34px 68px}
.tl-item::before{content:"";position:absolute;left:20px;top:44px;bottom:2px;width:2px;background:linear-gradient(180deg,var(--border),var(--border-soft))}
.tl-item:last-child{padding-bottom:0}
.tl-item:last-child::before{display:none}
.tl-num{position:absolute;left:0;top:0;width:42px;height:42px;border-radius:50%;background:#fff;border:2px solid var(--brand);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;transition:all .22s var(--ease)}
.tl-item:hover .tl-num{background:var(--brand);color:#fff;box-shadow:0 0 0 4px rgba(36,56,166,.12)}
.tl-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px 26px;box-shadow:var(--sh-1);transition:all .22s var(--ease)}
.tl-item:hover .tl-card{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3DAEC}
.tl-card h3{font-size:19px;margin-bottom:8px}
.tl-card p{color:var(--text-2);font-size:15.5px}
.tl-card ul{margin-top:12px;display:grid;gap:7px}
.tl-card li{position:relative;padding-left:18px;color:var(--text-2);font-size:15px}
.tl-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}

/* 知识点双列卡 */
.know-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.know-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);transition:all .22s var(--ease)}
.know-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D3DAEC}
.know-card .kc-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.kc-icon{width:44px;height:44px;flex:0 0 auto;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:17px}
.know-card h3{font-size:18px}
.know-card p{color:var(--text-2);font-size:15.5px}
.know-card .kc-tag{display:inline-block;margin-top:14px;font-size:12.5px;font-weight:600;color:var(--cyan);background:var(--cyan-light);border-radius:var(--r-pill);padding:5px 12px}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--sh-1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--border-soft)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--text);transition:background .2s var(--ease),color .2s var(--ease);position:relative}
.faq-q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--brand);border-radius:0 3px 3px 0;opacity:0;transition:opacity .2s var(--ease)}
.faq-q:hover{background:#FAFBFF;color:var(--brand)}
.faq-item.open .faq-q{color:var(--brand)}
.faq-item.open .faq-q::before{opacity:1}
.faq-q .mark{flex:0 0 auto;font-size:18px;font-weight:400;color:var(--brand);transition:transform .28s var(--ease);line-height:1}
.faq-item.open .faq-q .mark{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease)}
.faq-a p{padding:0 26px 24px 26px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.faq-item.open .faq-a{max-height:420px}

/* 交叉入口 */
.cross-card{display:grid;grid-template-columns:5fr 7fr;gap:0;background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--sh-1)}
.cross-media{position:relative;min-height:260px}
.cross-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cross-body{padding:40px 44px}
.cross-body h2{font-size:26px;margin:14px 0 12px}
.cross-body p{color:var(--text-2);font-size:16px;line-height:1.85;max-width:560px}
.cross-points{display:grid;gap:10px;margin:20px 0 26px}
.cross-points li{display:flex;gap:10px;color:var(--text-2);font-size:15px}
.cross-points i{color:var(--cyan);margin-top:5px;font-size:13px}

/* 表单 */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.consult-aside h2{font-size:30px;margin:14px 0 14px}
.consult-aside p{color:var(--text-2);font-size:16px;line-height:1.85}
.consult-list{display:grid;gap:14px;margin-top:26px}
.consult-list li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 18px;box-shadow:var(--sh-1)}
.consult-list i{color:var(--brand);margin-top:5px}
.consult-list b{display:block;font-size:15.5px;font-weight:600}
.consult-list span{font-size:14px;color:var(--text-3)}
.form-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:32px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:47px;border:1px solid var(--border);border-radius:var(--r-input);background:#FBFCFE;padding:0 15px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease)}
.field textarea{min-height:112px;padding:13px 15px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(36,56,166,.12);outline:none}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text-2);margin:6px 0 22px}
.check-line input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand)}
.form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.form-foot small{color:var(--text-3);font-size:13px}

/* CTA 条 */
.cta-band{background:var(--brand-deep);border-radius:20px;padding:34px 40px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band .cta-dots{position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.20) 2px,transparent 2px);background-size:36px 36px;opacity:.5;pointer-events:none}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:8px;position:relative}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;position:relative;max-width:620px}
.cta-band .btn{position:relative;flex:0 0 auto}

/* 页脚 */
.site-footer{background:var(--alt);border-top:1px solid var(--border);padding:64px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.footer-brand .brand-text{display:flex;flex-direction:column;line-height:1.3}
.footer-brand strong{font-size:16px}
.footer-brand em{font-style:normal;font-size:12.5px;color:var(--text-3)}
.footer-about{color:var(--text-2);font-size:14.5px;line-height:1.85;max-width:380px}
.footer-contact{margin-top:16px;font-size:14px;color:var(--text-3)}
.footer-contact b{display:inline-block;color:var(--brand)}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{margin-top:44px;border-top:1px solid var(--border);padding:20px 0 26px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.footer-bottom .fb-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--brand)}

/* 响应式 */
@media (max-width:1180px){
  .nav-cats{display:none}
  .mobile-toggle{display:flex}
  .nav-search{max-width:420px}
}
@media (max-width:1024px){
  .grid-container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .nav-search{display:none}
  .mobile-search{display:block}
  .hero-panel{grid-template-columns:1fr;padding:34px 30px;gap:28px}
  .hero-panel h1{font-size:32px}
  .consult-grid{grid-template-columns:1fr;gap:32px}
  .cross-card{grid-template-columns:1fr}
  .cross-media{min-height:220px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .topbar .grid-container{justify-content:center}
  .topbar .topbar-links{display:none}
  .nav-wrap{gap:12px;min-height:66px}
  .logo-text em{display:none}
  .logo-text strong{font-size:15.5px}
  .logo-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
  .hero-panel h1{font-size:27px}
  .hero-panel .hero-lead{font-size:15.5px}
  .section-head h2{font-size:23px}
  .stats-bar{grid-template-columns:1fr 1fr;gap:18px 14px;padding:22px}
  .stat b{font-size:24px}
  .know-grid{grid-template-columns:1fr}
  .tl-item{padding-left:56px}
  .tl-num{width:36px;height:36px;font-size:15px}
  .tl-item::before{left:17px}
  .tl-card{padding:18px 20px}
  .form-card{padding:22px}
  .form-row{grid-template-columns:1fr}
  .cross-body{padding:28px 24px}
  .cross-body h2{font-size:22px}
  .cta-band{padding:26px 24px}
  .cta-band h2{font-size:20px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:10px}
  .faq-q{padding:18px 20px;font-size:15.5px}
  .faq-a p{padding:0 20px 20px}
}
@media (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px}
  .mobile-search{padding:0 16px 14px}
  .hero-chips .chip{font-size:12.5px;padding:6px 12px}
  .stats-bar{grid-template-columns:1fr}
  .section-head h2{font-size:21px}
}