/* ===== GEO 诊断站 · 手机优先响应式样式 ===== */
:root{
  --primary:#4F46E5;
  --primary-2:#7C3AED;
  --ink:#1b2030;
  --muted:#5b6478;
  --line:#e8eaf0;
  --bg-soft:#f6f7fb;
  --ok:#10b981;
  --warn:#f59e0b;
  --bad:#ef4444;
  --radius:14px;
  --shadow:0 6px 24px rgba(31,38,80,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,sans-serif;font-size:16px;line-height:1.65;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{width:100%;padding:0 16px;margin:0 auto}
@media(min-width:768px){.container{max-width:1080px;padding:0 24px}}

/* 按钮 */
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:700;font-size:16px;border:none;cursor:pointer;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.32);text-align:center;transition:transform .15s,box-shadow .15s}
.btn:active{transform:scale(.97)}
.btn-block{display:block;width:100%}
.btn-ghost{background:#fff;color:var(--primary);border:1.5px solid var(--primary);box-shadow:none}
.btn-sm{padding:9px 16px;font-size:14px}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{font-weight:800;font-size:18px;display:flex;align-items:center;gap:9px}
.logo .dot{width:11px;height:11px;border-radius:3px;background:linear-gradient(135deg,var(--primary),var(--primary-2))}
.nav-links{display:none}
.menu-btn{background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink);line-height:1}
.mobile-menu{display:none;flex-direction:column;padding:6px 0 14px}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:11px 4px;color:var(--muted);border-bottom:1px solid var(--line);font-size:15px}
@media(min-width:768px){.nav-links{display:flex;gap:28px;font-size:15px;color:var(--muted)}.nav-links a:hover{color:var(--primary)}.menu-btn{display:none}}

/* Hero */
.hero{padding:38px 0 26px;background:radial-gradient(1000px 360px at 50% -20%,rgba(124,58,237,.13),transparent),linear-gradient(180deg,#fafbff,#fff)}
.hero h1{font-size:25px;line-height:1.35;font-weight:800;letter-spacing:-.4px}
.hero .sub{margin-top:14px;color:var(--muted);font-size:16px}
.hero .cta{margin-top:22px;display:flex;flex-direction:column;gap:12px}
@media(min-width:768px){.hero h1{font-size:42px}.hero .cta{flex-direction:row;align-items:center;gap:16px}.hero .sub{font-size:18px}}

/* 区块 */
.section{padding:34px 0}
.section.soft{background:var(--bg-soft)}
.section h2{font-size:21px;font-weight:800;margin-bottom:6px}
@media(min-width:768px){.section h2{font-size:28px}}
.section .lead{color:var(--muted);margin-bottom:22px;font-size:15px}

/* 卡片网格 */
.grid{display:grid;gap:14px}
.grid.cols-3{grid-template-columns:1fr}
@media(min-width:768px){.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card .ic{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:12px}
.card h3{font-size:17px;margin-bottom:6px}
.card p{color:var(--muted);font-size:14px}

/* 平台徽标 */
.platforms{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.chip{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;font-weight:600}
.chip .d{width:8px;height:8px;border-radius:50%;background:var(--primary)}

/* 表单 */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);max-width:560px;margin:0 auto}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:7px}
.field .hint{font-weight:400;color:var(--muted);font-size:12px}
.field .tip{font-size:12px;color:var(--muted);line-height:1.6;margin:6px 0 0}
.field input,.field textarea{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit;background:#fff;transition:border-color .15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary)}
.note{font-size:12px;color:var(--muted);margin-top:4px}
.err{color:var(--bad);font-size:13px;margin-top:10px;display:none}

/* 报告页 */
.score-hero{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-radius:var(--radius);padding:26px 22px;text-align:center;box-shadow:var(--shadow)}
.score-hero .big{font-size:58px;font-weight:800;line-height:1}
.score-hero .lab{opacity:.9;margin-top:6px;font-size:15px}
.score-hero .sub{opacity:.85;font-size:13px;margin-top:10px}
.bar{margin:14px 0}
.bar .top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:6px;font-weight:600}
.bar .track{height:10px;background:var(--bg-soft);border-radius:999px;overflow:hidden}
.bar .fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2))}
.table{width:100%;border-collapse:collapse;font-size:14px;margin-top:8px}
.table th,.table td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--line)}
.table th{color:var(--muted);font-weight:600;font-size:13px}
.rank{display:inline-flex;width:24px;height:24px;border-radius:50%;background:var(--bg-soft);align-items:center;justify-content:center;font-weight:700;font-size:13px}
.rank.top{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff}
.tag{display:inline-block;font-size:12px;padding:3px 9px;border-radius:999px;font-weight:600}
.tag.ok{background:rgba(16,185,129,.12);color:var(--ok)}
.tag.warn{background:rgba(245,158,11,.14);color:var(--warn)}
.tag.bad{background:rgba(239,68,68,.12);color:var(--bad)}
.list-check{list-style:none;display:flex;flex-direction:column;gap:10px}
.list-check li{display:flex;gap:10px;align-items:flex-start;font-size:14px}
.list-check .mk{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:rgba(79,70,229,.12);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:2px}
.cta-box{background:var(--bg-soft);border:1px dashed var(--primary);border-radius:var(--radius);padding:22px;text-align:center;margin-top:8px}
.cta-box h3{font-size:18px;margin-bottom:8px}
.cta-box p{color:var(--muted);font-size:14px;margin-bottom:16px}

/* 内容页 */
.prose{max-width:760px}
.prose h2{font-size:19px;margin:24px 0 10px}
.prose h3{font-size:16px;margin:18px 0 8px}
.prose p,.prose li{color:var(--muted);font-size:15px;margin-bottom:8px}
.prose ul{padding-left:20px}
.contact-grid{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:768px){.contact-grid{grid-template-columns:1fr 1fr}}
.info-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.info-box .k{font-size:13px;color:var(--muted)}
.info-box .v{font-size:17px;font-weight:700;margin-top:3px}

/* 页脚 */
.site-footer{background:#0f1426;color:#c7cbe0;padding:30px 0 24px;margin-top:10px;font-size:13px}
.site-footer a{color:#a9b0d6}
.site-footer .frow{display:flex;flex-direction:column;gap:10px}
@media(min-width:768px){.site-footer .frow{flex-direction:row;justify-content:space-between;align-items:center}}
.beian{opacity:.7;font-size:12px;margin-top:14px}