/* SEOmill 站点共享样式 */
:root{
  --bg:#faf8f4; --panel:#ffffff; --ink:#1c2333; --muted:#6b7280;
  --brand:#3b4bd8; --brand-2:#37d0a8; --border:#e7e2d8; --warn:#e05a4e;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.logo,.logo:hover{text-decoration:none}

/* ===== 顶部导航 ===== */
header{position:sticky;top:0;z-index:50;background:rgba(250,248,244,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.nav-left{display:flex;align-items:center;gap:26px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--ink)}
.logo svg{width:30px;height:30px}
.nav-link{font-size:14px;color:var(--muted);font-weight:500}
.nav-link:hover{color:var(--brand);text-decoration:none}

/* ===== 导航下拉（指南） ===== */
.nav-drop{position:relative}
.nav-drop>.nav-link::after{content:"";display:inline-block;margin-left:6px;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;vertical-align:2px;opacity:.45}
.drop-menu{position:absolute;top:100%;left:0;display:none;min-width:200px;padding-top:10px;z-index:60}
.nav-drop:hover .drop-menu,.nav-drop:focus-within .drop-menu{display:block}
.drop-menu a{display:block;background:var(--panel);border:1px solid var(--border);margin-top:-1px;padding:10px 15px;font-size:13.5px;color:var(--ink);text-decoration:none;white-space:nowrap}
.drop-menu a:first-child{margin-top:0;border-radius:10px 10px 0 0}
.drop-menu a:last-child{border-radius:0 0 10px 10px}
.drop-menu a:hover{background:#f4f1ea;color:var(--brand);text-decoration:none}
.nav .cta{background:var(--brand);color:#fff;padding:9px 20px;border-radius:10px;font-size:14px;font-weight:600}
.nav .cta:hover{background:#2e3cba;text-decoration:none}

/* ===== Hero ===== */
.hero{padding:84px 0 64px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:auto -10% -40% -10%;height:340px;background:radial-gradient(ellipse at center,rgba(59,75,216,.10),transparent 65%);pointer-events:none}
.page-hero{padding:48px 0 8px}
.badge{display:inline-block;background:rgba(55,208,168,.14);color:#178a6b;font-size:13px;font-weight:600;padding:5px 14px;border-radius:999px;margin-bottom:22px}
h1{font-size:clamp(30px,5vw,50px);line-height:1.25;font-weight:800;letter-spacing:-.5px}
.page-hero h1{font-size:clamp(26px,4vw,38px)}
h1 .grad{background:linear-gradient(90deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{max-width:640px;margin:18px auto 0;color:var(--muted);font-size:17px}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-top:34px;flex-wrap:wrap}
.btn{display:inline-block;padding:13px 30px;border-radius:12px;font-size:15.5px;font-weight:600;transition:.15s}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(59,75,216,.28)}
.btn-primary:hover{background:#2e3cba;transform:translateY(-1px);text-decoration:none}
.btn-ghost{border:1.5px solid var(--border);color:var(--ink);background:var(--panel)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);text-decoration:none}
.hero-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* ===== 数据条 ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:46px 0 0}
.stat{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px 12px;text-align:center}
.stat b{display:block;font-size:26px;color:var(--brand)}
.stat span{font-size:13px;color:var(--muted)}

/* ===== 区块通用 ===== */
section{padding:66px 0}
.sec-head{text-align:center;max-width:620px;margin:0 auto 44px}
.sec-head h2{font-size:28px;font-weight:800}
.sec-head p{color:var(--muted);margin-top:10px}

/* ===== 模块卡片 ===== */
.grid5{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}
.mod{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px 20px;transition:.18s}
.mod:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(28,35,51,.08);border-color:#d5cfc2}
.mod .ico{width:44px;height:44px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.mod h3{font-size:16.5px;margin-bottom:8px}
.mod p{font-size:13.5px;color:var(--muted)}

/* ===== 流程 ===== */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:0;max-width:900px;margin:0 auto;counter-reset:st}
.step{position:relative;padding:26px 22px;text-align:center}
.step::before{counter-increment:st;content:counter(st);display:inline-flex;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;align-items:center;justify-content:center;font-weight:700;margin-bottom:14px}
.step:not(:last-child)::after{content:"";position:absolute;top:45px;right:-20%;width:40%;height:2px;background:repeating-linear-gradient(90deg,var(--border) 0 8px,transparent 8px 16px)}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--muted)}

/* ===== FAQ ===== */
.faq{max-width:760px;margin:0 auto}
.faq details{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px 20px;margin-bottom:12px}
.faq summary{font-weight:600;cursor:pointer;font-size:15px}
.faq details p{margin-top:10px;color:var(--muted);font-size:14px}

/* ===== CTA 尾部 ===== */
.final{background:linear-gradient(135deg,#3b4bd8,#2a36a8);color:#fff;text-align:center;border-radius:20px;padding:58px 26px;position:relative;overflow:hidden}
.final h2{font-size:clamp(22px,3.6vw,32px);font-weight:800}
.final p{opacity:.85;margin:12px auto 26px;max-width:520px}
.final .btn{background:#fff;color:var(--brand)}
.final .btn:hover{transform:translateY(-1px);text-decoration:none}

/* ===== 文章页 ===== */
.breadcrumb{font-size:13px;color:var(--muted);padding-top:26px}
.breadcrumb a{color:var(--muted)}
.prose{max-width:760px;margin:26px auto 0;padding-bottom:10px}
.prose h2{font-size:22px;margin:40px 0 14px;font-weight:800;letter-spacing:-.3px}
.prose h3{font-size:17px;margin:28px 0 10px;font-weight:700}
.prose p{margin:0 0 15px;color:#333c4e}
.prose ul,.prose ol{margin:0 0 16px 22px;color:#333c4e}
.prose li{margin-bottom:9px}
.prose code{background:#eef1ff;color:#3b4bd8;padding:2px 7px;border-radius:6px;font-size:13.5px;font-family:Consolas,Menlo,"Courier New",monospace}
.prose pre{background:#161a2b;color:#dbe2ff;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:13px;line-height:1.7;margin:0 0 18px}
.prose pre code{background:none;color:inherit;padding:0;font-size:inherit}
.tip{background:#eefaf5;border-left:3px solid var(--brand-2);padding:13px 16px;border-radius:0 10px 10px 0;margin:0 0 18px;font-size:14px;color:#2c4a41}
.warn{background:#fff3ee;border-left:3px solid var(--warn);padding:13px 16px;border-radius:0 10px 10px 0;margin:0 0 18px;font-size:14px;color:#6b3a34}
.prose table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:14px}
.prose th,.prose td{border:1px solid var(--border);padding:9px 12px;text-align:left;vertical-align:top}
.prose th{background:#f4f1ea;font-weight:700}
.meta-line{font-size:13px;color:var(--muted);margin-top:-4px}

/* ===== 相关阅读 / 卡片列表 ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin-top:10px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px 18px 16px;display:block;color:var(--ink);transition:.15s}
.card:hover{border-color:var(--brand);transform:translateY(-2px);text-decoration:none;box-shadow:0 8px 20px rgba(28,35,51,.07)}
.card b{display:block;font-size:15px;margin-bottom:5px}
.card span{font-size:13px;color:var(--muted)}

footer{border-top:1px solid var(--border);padding:26px 0 40px;text-align:center;color:var(--muted);font-size:13px}
footer a{color:var(--muted)}
footer .fnav{margin-top:6px}
footer .fnav a{margin:0 8px}

@media(max-width:640px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .hero{padding:56px 0 44px}
  .step:not(:last-child)::after{display:none}
  .nav-left{gap:14px}
}