/* WebMedia Scanner 官网样式：与 App 同源的 Dark Neon token 体系（prototype/css/variables.css） */
:root {
  color-scheme: dark;
  --bg: #070A12;
  --surface: #0E1320;
  --surface-2: #121827;
  --surface-hover: #171F31;
  --primary: #6C63FF;
  --accent: #3B82F6;
  --neon: #22D3EE;
  --text-1: #F2F5FA;
  --text-2: #97A3BB;
  --text-3: #5C6880;
  --border: #1C2536;
  --success: #2DD4A7;
  --gutter: clamp(20px, 5vw, 48px);
  --radius-card: 16px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace; }

a { color: var(--neon); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(7, 10, 18, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 16px;
  height: 60px;
}
.logo { display: flex; align-items: center; gap: 10px; color: var(--text-1); font-weight: 700; font-size: 16px; }
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--accent) 55%, var(--neon));
  display: grid; place-items: center; flex: none;
}
.logo-mark svg { width: 17px; height: 17px; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.site-nav a { color: var(--text-2); font-size: 14px; }
.site-nav a:hover { color: var(--text-1); text-decoration: none; }
@media (max-width: 640px) { .site-nav a:not(.btn) { display: none; } }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 22px; border-radius: 12px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
}
.btn-primary {
  color: #fff; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 55%, var(--neon) 130%);
}
.btn-primary:hover { text-decoration: none; filter: brightness(1.08); }
.btn-ghost {
  color: var(--text-1); background: var(--surface-2); border: 1px solid var(--border);
}
.btn-ghost:hover { text-decoration: none; background: var(--surface-hover); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 48px; align-items: center; }
@media (max-width: 860px) { .hero { padding-top: 48px; } .hero .wrap { grid-template-columns: 1fr; gap: 40px; } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--neon);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.25);
  padding: 5px 12px; border-radius: 999px; margin: 0 0 18px;
}
.hero h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.18; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero h1 .hl { color: var(--primary); }
.hero p.lede { color: var(--text-2); font-size: 17px; margin: 0 0 28px; max-width: 46em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-note { color: var(--text-3); font-size: 13px; margin-top: 14px; }

/* hero 手机 + 拦截流 */
.hero-visual { position: relative; display: grid; place-items: center; }
.phone {
  width: min(280px, 72vw); border-radius: 26px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 0 0 6px rgba(18, 24, 39, 0.6), 0 30px 80px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}
.sniffer {
  position: absolute; left: -6%; bottom: 4%; width: 74%;
  background: rgba(14, 19, 32, 0.96);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 10px 12px; font-size: 12px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.55);
}
@media (max-width: 860px) {
  .sniffer { position: static; width: 100%; margin-top: 20px; }
  .hero-visual { justify-items: stretch; }
  .phone { margin: 0 auto; }
}
.sniffer-title { color: var(--text-3); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 8px; }
.sniffer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.sniffer li { display: flex; align-items: center; gap: 8px; color: var(--text-2); min-width: 0; }
.sniffer .file { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.chip {
  flex: none; font-size: 10px; font-weight: 700; letter-spacing: .04em;
  padding: 2px 8px; border-radius: 999px;
}
.chip-v { color: var(--primary); background: rgba(108, 99, 255, .14); }
.chip-a { color: var(--success); background: rgba(45, 212, 167, .14); }
.chip-i { color: var(--neon); background: rgba(34, 211, 238, .12); }
.chip-f { color: #F5B14C; background: rgba(245, 177, 76, .14); }
.sniffer li.new { animation: slidein .5s ease-out 1; }
@keyframes slidein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- 区块通用 ---------- */
.section { padding: 64px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2 { font-size: clamp(22px, 3vw, 30px); letter-spacing: -0.01em; margin: 0 0 10px; }
.section .sub { color: var(--text-2); max-width: 52em; margin: 0 0 40px; }
.step-label { color: var(--primary); font-weight: 700; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 8px; }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
@media (max-width: 900px) { .flow { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 480px) { .flow { grid-template-columns: 1fr; } }
.flow .shot {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-card); padding: 14px;
}
.section-alt .flow .shot { background: var(--surface-2); }
.section .flow .shot { background: var(--surface); }
.flow .shot img { border-radius: 10px; border: 1px solid var(--border); }
.flow .shot h3 { font-size: 15px; margin: 14px 2px 4px; }
.flow .shot p { font-size: 13.5px; color: var(--text-2); margin: 0 2px; }
.flow .num { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 999px; background: rgba(108,99,255,.16); color: var(--primary); font-size: 12px; font-weight: 700; margin-right: 6px; }

/* ---------- 功能格 ---------- */
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 900px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }
.feature {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-card); padding: 20px;
}
.section-alt .feature { background: var(--surface-2); }
.feature .ico {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: rgba(59, 130, 246, .14); color: var(--accent); margin-bottom: 14px;
}
.feature .ico svg { width: 20px; height: 20px; }
.feature h3 { font-size: 15.5px; margin: 0 0 6px; }
.feature p { font-size: 13.5px; color: var(--text-2); margin: 0; }

/* ---------- 格式条 ---------- */
.formats { display: flex; flex-wrap: wrap; gap: 8px; }
.formats span {
  font-size: 12.5px; font-weight: 600; color: var(--text-2);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 5px 13px;
}
@media (prefers-color-scheme: light) { :root { color-scheme: dark; } }

/* ---------- Pro ---------- */
.pro-band { display: grid; grid-template-columns: minmax(0, 1fr) 240px; gap: 40px; align-items: center; }
@media (max-width: 760px) { .pro-band { grid-template-columns: 1fr; } .pro-band .phone { width: 220px; margin: 0 auto; } }
.price { font-size: 34px; font-weight: 800; letter-spacing: -0.02em; }
.price small { font-size: 14px; font-weight: 500; color: var(--text-2); margin-left: 8px; }
.pro-list { list-style: none; margin: 18px 0 26px; padding: 0; display: grid; gap: 8px; }
.pro-list li { display: flex; gap: 10px; align-items: baseline; color: var(--text-2); font-size: 14.5px; }
.pro-list li::before { content: "✓"; color: var(--success); font-weight: 700; }

/* ---------- FAQ ---------- */
.faq { max-width: 720px; }
.faq details {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 18px; margin-bottom: 10px;
}
.section-alt .faq details { background: var(--surface-2); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 15px; }
.faq details p { color: var(--text-2); font-size: 14px; margin: 10px 0 2px; }

/* ---------- 隐私页 ---------- */
.prose { max-width: 720px; }
.prose h2 { font-size: 19px; margin: 34px 0 8px; }
.prose p, .prose li { color: var(--text-2); font-size: 15px; }
.prose .updated { color: var(--text-3); font-size: 13px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 34px 0 44px; margin-top: 40px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; color: var(--text-3); font-size: 13.5px; }
.site-footer nav { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.site-footer a { color: var(--text-2); }