/* ==========================================================
   shopee.wang — style.css
   设计语言模仿 vayomed.com（浅色/大留白/编号模块/数据chips/对比块）
   主色 Shopee 橙 #EE4D2D · tokens 见建站方案.md §1
   ========================================================== */

:root{
  --brand:#EE4D2D;
  --brand-dark:#D63E1F;
  --brand-deep:#B93015;
  --brand-soft:#FF7A5C;
  --bg:#FFFCFB;
  --tint:#FFF4F0;
  --tint-2:#FFE9E2;
  --line:#F5DCD3;
  --ink:#2B2320;
  --ink-2:#5C544F;
  --ink-3:#8A817B;
  --white:#FFFFFF;
  --radius:16px;
  --shadow:0 6px 24px rgba(43,35,32,.06);
  --shadow-hover:0 12px 32px rgba(238,77,45,.12);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:var(--bg);color:var(--ink);
  font-size:16px;line-height:1.8;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer}
::selection{background:rgba(238,77,45,.2)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.wrap{max-width:1120px;margin:0 auto;padding-inline:24px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px;
  line-height:1.4;transition:all .18s ease;white-space:nowrap}
.btn-primary{background:var(--brand);color:var(--white);box-shadow:0 4px 14px rgba(238,77,45,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:var(--white);color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand-soft);color:var(--brand-deep)}
.btn-white{background:var(--white);color:var(--brand-deep)}
.btn-white:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(43,35,32,.18)}
.btn-sm{padding:8px 16px;font-size:14px;border-radius:8px}

/* ---------- 顶栏 ---------- */
.site-head{position:sticky;top:0;z-index:50;
  background:rgba(255,252,251,.88);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.head-in{display:flex;align-items:center;gap:20px;height:66px}
.logo{display:inline-flex;align-items:center;flex-shrink:0}
.logo img{height:36px;width:auto}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a:not(.btn){padding:8px 13px;border-radius:8px;font-size:15px;
  font-weight:500;color:var(--ink-2);transition:all .15s ease}
.main-nav a:not(.btn):hover{color:var(--brand-deep);background:var(--tint)}
.main-nav a:not(.btn).active{color:var(--brand-deep);background:var(--tint-2);font-weight:600}
.main-nav .btn{margin-left:10px}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:10px;margin-left:auto}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}

/* ---------- Hero ---------- */
.hero{padding:76px 0 60px;background:linear-gradient(180deg,var(--tint) 0%,var(--bg) 100%)}
.hero-in{max-width:760px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);font-size:13px;font-weight:600;
  color:var(--brand-deep);margin-bottom:22px}
.badge i{width:7px;height:7px;border-radius:50%;background:var(--brand);flex-shrink:0}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.25;font-weight:800;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero .sub{margin-top:18px;font-size:17px;color:var(--ink-2);max-width:640px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.proof{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:999px;
  background:var(--white);border:1px solid var(--line);font-size:13px;color:var(--ink-2)}
.chip b{color:var(--brand-deep);font-weight:700}

/* ---------- 通用区块 ---------- */
.sec{padding:68px 0}
.sec-tint{background:var(--tint)}
.sec-head{margin-bottom:34px;max-width:680px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--brand);margin-bottom:10px}
.sec-head h2{font-size:clamp(24px,3.4vw,32px);line-height:1.35;font-weight:800}
.sec-sub{margin-top:12px;color:var(--ink-2);font-size:15.5px}

/* ---------- 双受众 ---------- */
.duo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.duo-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;min-width:0;transition:all .2s ease}
.duo-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-hover)}
.duo-card .ico{width:46px;height:46px;border-radius:12px;background:var(--tint-2);
  display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}
.duo-card h3{font-size:20px;font-weight:700}
.duo-card p{margin-top:10px;color:var(--ink-2);font-size:14.5px}
.duo-card ul{margin-top:14px}
.duo-card li{padding:7px 0 7px 24px;position:relative;font-size:14.5px;color:var(--ink-2)}
.duo-card li::before{content:"✓";position:absolute;left:2px;color:var(--brand);font-weight:700}
.duo-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  color:var(--brand-deep);font-weight:600;font-size:14.5px}
.duo-card .more:hover{gap:10px}
.duo-card .more{transition:gap .15s ease}

/* ---------- 编号模块卡 ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.mod-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;min-width:0;display:flex;flex-direction:column;transition:all .2s ease}
.mod-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.mod-card .num{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1px}
.mod-card h3{margin-top:10px;font-size:18px;font-weight:700}
.mod-card p{margin-top:8px;font-size:14px;color:var(--ink-2);flex:1}
.mod-card .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.mod-card .tags .chip{padding:4px 10px;font-size:12px}
.mod-card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  color:var(--brand-deep);font-weight:600;font-size:14px;transition:gap .15s ease}
.mod-card .more:hover{gap:10px}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;counter-reset:step}
.step{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;min-width:0;position:relative}
.step .n{width:38px;height:38px;border-radius:50%;background:var(--brand);color:var(--white);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;margin-bottom:14px}
.step h3{font-size:17px;font-weight:700}
.step p{margin-top:8px;font-size:14px;color:var(--ink-2)}

/* ---------- 文章卡 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;display:flex;flex-direction:column;transition:all .2s ease}
.post-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.post-card .tag{align-self:flex-start;padding:4px 11px;border-radius:999px;background:var(--tint-2);
  color:var(--brand-deep);font-size:12px;font-weight:700}
.post-card h3{margin-top:12px;font-size:16.5px;line-height:1.5;font-weight:700}
.post-card h3 a:hover{color:var(--brand-deep)}
.post-card .ex{margin-top:8px;font-size:13.5px;color:var(--ink-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card .meta{margin-top:14px;padding-top:12px;border-top:1px solid var(--tint-2);
  font-size:12.5px;color:var(--ink-3);display:flex;justify-content:space-between;align-items:center}
.post-card .meta .arr{color:var(--brand);font-weight:700}

/* ---------- 数据 band ---------- */
.stats{background:var(--white);border:1px solid var(--line);border-radius:20px;
  padding:30px 34px;display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;box-shadow:var(--shadow)}
.stat{min-width:120px}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--brand);line-height:1.2}
.stat span{font-size:13px;color:var(--ink-2)}

/* ---------- 对比块 ---------- */
.cmp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cmp-card{border-radius:var(--radius);padding:28px 26px;min-width:0}
.cmp-bad{background:var(--white);border:1px solid var(--line)}
.cmp-good{background:var(--tint-2);border:1px solid var(--brand-soft)}
.cmp-card h3{font-size:18px;font-weight:700}
.cmp-good h3{color:var(--brand-deep)}
.cmp-card ul{margin-top:16px}
.cmp-card li{padding:8px 0 8px 26px;position:relative;font-size:14.5px;color:var(--ink-2)}
.cmp-bad li::before{content:"✕";position:absolute;left:2px;color:var(--ink-3);font-weight:700}
.cmp-good li{color:var(--ink)}
.cmp-good li::before{content:"✓";position:absolute;left:2px;color:var(--brand);font-weight:700}

/* ---------- 收尾 CTA ---------- */
.cta-band{border-radius:20px;padding:52px 40px;text-align:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%)}
.cta-band h2{color:var(--white);font-size:clamp(22px,3vw,30px);font-weight:800}
.cta-band p{color:rgba(255,255,255,.88);margin-top:12px;font-size:15px}
.cta-band .btn{margin-top:26px}

/* ---------- 列表页头 ---------- */
.list-head{padding:56px 0 40px;background:linear-gradient(180deg,var(--tint) 0%,var(--bg) 100%)}
.list-head h1{font-size:clamp(28px,4vw,38px);font-weight:800}
.list-head .desc{margin-top:14px;color:var(--ink-2);max-width:660px;font-size:15.5px}
.list-head .chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}

/* ---------- 大促卡 ---------- */
.deal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.deal-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;transition:all .2s ease}
.deal-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-hover)}
.deal-card .mon{display:inline-flex;padding:5px 12px;border-radius:999px;background:var(--brand);
  color:var(--white);font-size:12.5px;font-weight:700}
.deal-card h3{margin-top:12px;font-size:17px;font-weight:700}
.deal-card p{margin-top:8px;font-size:13.5px;color:var(--ink-2)}

/* ---------- 站点入口卡 ---------- */
.site-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.site-card{background:var(--white);border:1px solid var(--line);border-radius:14px;
  padding:20px 18px;min-width:0;transition:all .2s ease;display:block}
.site-card:hover{border-color:var(--brand-soft);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.site-card .flag{width:42px;height:42px;border-radius:12px;background:var(--tint-2);
  color:var(--brand-deep);font-weight:800;font-size:14px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center}
.site-card b{display:block;margin-top:8px;font-size:15px}
.site-card span{display:block;margin-top:2px;font-size:12.5px;color:var(--ink-3)}
.site-card .go{display:inline-block;margin-top:10px;color:var(--brand-deep);font-size:13px;font-weight:700}

/* ---------- 文章页 ---------- */
.crumb{padding:22px 0 0;font-size:13px;color:var(--ink-3)}
.crumb a:hover{color:var(--brand-deep)}
.crumb i{font-style:normal;margin:0 7px;color:var(--line)}
.post-head{padding:26px 0 8px;max-width:780px;margin:0 auto}
.post-head h1{font-size:clamp(26px,4vw,36px);line-height:1.4;font-weight:800}
.post-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;font-size:13px;color:var(--ink-3)}
.post-meta .chip{padding:4px 11px;font-size:12px}
.post-body{max-width:780px;margin:0 auto;padding:20px 0 8px}
.post-body p{margin:14px 0;color:var(--ink-2)}
.post-body strong{color:var(--ink)}
.post-body h2{margin:42px 0 14px;padding-left:13px;border-left:4px solid var(--brand);
  font-size:22px;line-height:1.4;font-weight:800;color:var(--ink)}
.post-body h3{margin:26px 0 10px;font-size:17.5px;font-weight:700;color:var(--ink)}
.post-body ul,.post-body ol{margin:14px 0;padding-left:22px}
.post-body ul{list-style:disc}
.post-body ol{list-style:decimal}
.post-body li{margin:7px 0;color:var(--ink-2);font-size:15px}
.post-body li strong{color:var(--ink)}
.post-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.post-body th{background:var(--tint);font-weight:700;color:var(--ink)}
.post-body td{color:var(--ink-2)}
.tip{margin:20px 0;padding:15px 18px;border-radius:12px;background:rgba(238,77,45,.06);
  border:1px solid rgba(238,77,45,.22);border-left:4px solid var(--brand);font-size:14.5px;color:var(--ink-2)}
.tip b{color:var(--brand-deep)}
.post-cta{max-width:780px;margin:36px auto 0}

/* ---------- FAQ ---------- */
.faq{max-width:780px}
.faq details{background:var(--white);border:1px solid var(--line);border-radius:12px;
  padding:0;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:16px 20px;font-weight:600;font-size:15.5px;
  list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--brand);font-weight:700;flex-shrink:0;margin-left:12px}
.faq details[open] summary::after{content:"－"}
.faq details p{padding:0 20px 16px;font-size:14.5px;color:var(--ink-2)}

/* ---------- 404 ---------- */
.nf{padding:96px 0;text-align:center}
.nf .code{font-size:92px;font-weight:800;color:var(--brand);line-height:1}
.nf h1{margin-top:14px;font-size:24px;font-weight:700}
.nf p{margin-top:10px;color:var(--ink-2)}
.nf .cta-row{justify-content:center;margin-top:28px}

/* ---------- 页脚 ---------- */
.foot{margin-top:72px;background:var(--tint);border-top:1px solid var(--line)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding:52px 0 40px}
.foot-brand p{margin-top:14px;font-size:13.5px;color:var(--ink-2);max-width:280px}
.foot h4{font-size:14px;font-weight:700;margin-bottom:14px}
.foot li{margin:9px 0}
.foot li a{font-size:13.5px;color:var(--ink-2)}
.foot li a:hover{color:var(--brand-deep)}
.foot-bar{border-top:1px solid var(--line);padding:18px 0;display:flex;gap:14px;
  flex-wrap:wrap;justify-content:space-between;font-size:12.5px;color:var(--ink-3)}
.foot-bar a{color:var(--ink-3)}
.foot-bar a:hover{color:var(--brand-deep)}
.foot-bar .anchor{font-weight:600;color:var(--ink-2)}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .mod-grid,.post-grid,.deal-grid,.steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:880px){
  .nav-toggle{display:flex}
  .main-nav{display:none;position:absolute;top:66px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;padding:14px 20px 18px;
    background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a:not(.btn){padding:12px 14px}
  .main-nav .btn{margin:10px 0 0}
  .hero{padding:56px 0 44px}
}
@media (max-width:640px){
  .mod-grid,.post-grid,.deal-grid,.steps,.duo-grid,.cmp-grid{grid-template-columns:minmax(0,1fr)}
  .site-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{flex-direction:column;gap:16px}
  .cta-band{padding:40px 24px}
  .sec{padding:52px 0}
}
@media (max-width:480px){
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .wrap{padding-inline:18px}
}