/* 餐数索引官网 · 全站样式 */
*{margin:0;padding:0;box-sizing:border-box;}
:root{
  --brand:#0F4C81; --brand2:#16608F; --brand-light:#EAF2F9;
  --accent:#D97706; --accent-light:#FDF3E3;
  --ink:#1F2430; --sub:#5A6272; --line:#E6E9EF; --bg:#F6F7FA;
}
html{scroll-behavior:smooth;}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.8;font-size:16px;}
a{color:var(--brand);text-decoration:none;}
img{max-width:100%;}
.container{max-width:1080px;margin:0 auto;padding:0 24px;}

/* 导航 */
header.nav{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);z-index:50;}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{font-size:20px;font-weight:700;color:var(--brand);}
.logo small{font-size:12px;color:var(--sub);font-weight:400;margin-left:8px;}
nav.menu{display:flex;gap:26px;}
nav.menu a{color:var(--ink);font-size:15px;}
nav.menu a:hover{color:var(--brand);}
@media(max-width:760px){nav.menu{display:none;}}

/* Hero */
.hero{background:linear-gradient(135deg,#0F4C81 0%,#16608F 60%,#1D76A8 100%);color:#fff;padding:88px 0 76px;text-align:center;}
.hero .kicker{font-size:14px;letter-spacing:3px;opacity:.85;}
.hero h1{font-size:38px;margin:16px 0 14px;line-height:1.35;}
.hero p.sub{font-size:17px;opacity:.92;max-width:640px;margin:0 auto 30px;}
.btn{display:inline-block;padding:12px 32px;border-radius:8px;font-size:15px;margin:0 8px;}
.btn.primary{background:var(--accent);color:#fff;}
.btn.ghost{border:1.5px solid rgba(255,255,255,.7);color:#fff;}
.btn.blue{background:var(--brand);color:#fff;}
@media(max-width:600px){.hero h1{font-size:27px;}}

/* 通用区块 */
section{padding:64px 0;}
section.alt{background:var(--bg);}
h2.sec{font-size:26px;color:var(--brand);text-align:center;margin-bottom:8px;}
p.sec-sub{text-align:center;color:var(--sub);margin-bottom:40px;font-size:15px;}
.grid{display:grid;gap:24px;}
.grid.c2{grid-template-columns:repeat(2,1fr);}
.grid.c3{grid-template-columns:repeat(3,1fr);}
@media(max-width:820px){.grid.c2,.grid.c3{grid-template-columns:1fr;}}

.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;}
.card h3{font-size:18px;color:var(--brand);margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--sub);}
.card .icon{font-size:30px;margin-bottom:12px;}
.section-card{background:var(--brand-light);border-radius:12px;padding:28px;}
.section-card h3{color:var(--brand);font-size:17px;margin-bottom:8px;}

/* 步骤 */
.steps{counter-reset:step;}
.step{position:relative;padding-left:64px;margin-bottom:26px;}
.step::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;}
.step h3{font-size:17px;margin-bottom:4px;}
.step p{color:var(--sub);font-size:14.5px;}

/* FAQ */
details{border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:12px;background:#fff;}
details summary{cursor:pointer;font-weight:600;font-size:15.5px;color:var(--ink);}
details p{margin-top:10px;font-size:14.5px;color:var(--sub);}

/* 引言块 */
.quote{background:var(--accent-light);border-left:4px solid var(--accent);padding:16px 20px;border-radius:0 8px 8px 0;margin:18px 0;font-size:15px;}

/* CTA */
.cta{background:linear-gradient(135deg,#0F4C81,#1D76A8);color:#fff;text-align:center;padding:56px 24px;}
.cta h2{font-size:24px;margin-bottom:12px;}
.cta p{opacity:.9;margin-bottom:24px;font-size:15px;}

/* 页脚 */
footer{background:#141A24;color:#9AA3B2;padding:44px 0 30px;font-size:13.5px;}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;}
@media(max-width:760px){footer .cols{grid-template-columns:1fr;}}
footer h4{color:#fff;font-size:15px;margin-bottom:12px;}
footer a{color:#9AA3B2;display:block;margin:6px 0;}
footer a:hover{color:#fff;}
.copyright{border-top:1px solid #2A3342;margin-top:30px;padding-top:18px;text-align:center;font-size:12.5px;color:#6B7484;}

/* 面包屑 */
.crumb{font-size:13px;color:var(--sub);padding:18px 0 0;}
.crumb a{color:var(--sub);}

/* 页面头 */
.page-head{background:var(--brand-light);padding:52px 0;text-align:center;}
.page-head h1{font-size:28px;color:var(--brand);}
.page-head p{color:var(--sub);margin-top:8px;font-size:15px;}

/* 报价卡片 */
.pricing{display:grid;gap:24px;}
.pricing.c3{grid-template-columns:repeat(3,1fr);}
@media(max-width:820px){.pricing.c3{grid-template-columns:1fr;}}
.price-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:28px;display:flex;flex-direction:column;position:relative;}
.price-card h3{font-size:18px;color:var(--brand);margin-bottom:6px;}
.price-card .price{font-size:28px;color:var(--accent);font-weight:700;margin-bottom:14px;}
.price-card .price small{font-size:14px;font-weight:400;color:var(--sub);}
.price-card ul{list-style:none;margin:0;padding:0;}
.price-card li{font-size:14px;color:var(--sub);padding:5px 0 5px 22px;position:relative;line-height:1.7;}
.price-card li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700;}
.price-card.hot{border:2px solid var(--accent);background:var(--accent-light);}
.price-card .tag{position:absolute;top:-13px;left:24px;background:var(--accent);color:#fff;font-size:12.5px;padding:3px 14px;border-radius:999px;letter-spacing:1px;}
.price-card .fine{font-size:12.5px;color:var(--sub);margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);}
.pricing-note{text-align:center;color:var(--sub);font-size:13.5px;margin-top:22px;}