/* =====================================================================
 * 《人类漏洞档案》站点样式 —— 档案室暗色风
 * 配色取自两份档案的外壳基调：墨蓝（引力）/ 松石绿（分母）/ 羊皮纸金
 * ===================================================================== */

:root {
  --bg: #0b0e14;
  --bg2: #0d1118;
  --panel: #131826;
  --panel2: #171d2e;
  --text: #e8e4d8;
  --muted: #9aa0b2;
  --gold: #d4b274;
  --gold-dim: rgba(212, 178, 116, .16);
  --teal: #5ecfae;
  --teal-dim: rgba(94, 207, 174, .14);
  --border: #272e42;
  --err: #e07a6a;
  --ok: #6fcf97;
  --radius: 10px;
  --serif: Georgia, "Times New Roman", "Songti SC", "Noto Serif SC", "SimSun", serif;
  --sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scrollbar-width: dark; }
body {
  font-family: var(--sans);
  background: radial-gradient(1100px 520px at 50% 0%, rgba(212, 178, 116, .07), transparent 62%),
              linear-gradient(180deg, #0d1118, #0b0e14) fixed;
  color: var(--text);
  line-height: 1.75;
}
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1060px; margin: 0 auto; padding: 0 22px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; }

/* ============ 顶栏 ============ */
nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 14, 20, .92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 13px 0;
}
nav .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.logo { font-family: var(--serif); font-weight: 700; font-size: 18px; color: var(--text); letter-spacing: .06em; }
.logo .logo-no { color: var(--gold); }
nav .links { display: flex; flex-wrap: wrap; }
nav .links a { margin-left: 18px; color: var(--muted); font-size: 14px; }
nav .links a:hover { color: var(--text); text-decoration: none; }

/* ============ Hero ============ */
.hero { text-align: center; padding: 84px 0 56px; }
.hero .series-no {
  font-family: var(--mono); font-size: 13px; letter-spacing: .35em; color: var(--gold);
  display: block; margin-bottom: 18px;
}
.hero h1 { font-size: 44px; letter-spacing: .08em; margin-bottom: 18px; }
.hero p.lead { font-size: 17px; color: var(--muted); max-width: 620px; margin: 0 auto 10px; }
.hero p.headphone { font-size: 13px; color: var(--muted); opacity: .8; }
.hero .hero-actions { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============ 按钮 ============ */
.btn {
  display: inline-block; padding: 11px 26px; border-radius: var(--radius);
  font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent;
  font-family: var(--sans); transition: all .15s ease; text-align: center;
}
.btn-primary { background: var(--gold); color: #1a1508; }
.btn-primary:hover { background: #e3c489; text-decoration: none; }
.btn-teal { background: var(--teal); color: #06251c; }
.btn-teal:hover { background: #7adcc0; text-decoration: none; }
.btn-outline { background: transparent; color: var(--gold); border-color: rgba(212, 178, 116, .5); }
.btn-outline:hover { background: var(--gold-dim); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--text); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-sm { padding: 7px 16px; font-size: 13px; }

/* ============ 区块 ============ */
section { padding: 54px 0; }
.section-title { text-align: center; font-size: 27px; margin-bottom: 10px; letter-spacing: .1em; }
.section-sub { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 36px; }

/* ============ 档案卡片 ============ */
.shelf { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 22px; }
.archive-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 26px 22px; position: relative; display: flex; flex-direction: column; gap: 10px;
  transition: border-color .15s ease;
}
.archive-card:hover { border-color: rgba(212, 178, 116, .45); }
.archive-card .tab-no {
  font-family: var(--mono); font-size: 12px; letter-spacing: .25em; color: var(--gold);
  border: 1px solid rgba(212, 178, 116, .4); border-radius: 4px;
  padding: 2px 10px; width: fit-content; background: var(--gold-dim);
}
.archive-card h3 { font-size: 21px; letter-spacing: .05em; }
.archive-card .topic { color: var(--teal); font-size: 13.5px; font-family: var(--mono); }
.archive-card .desc { color: var(--muted); font-size: 14px; flex: 1; }
.archive-card .status-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
.status-chip { font-size: 12.5px; padding: 3px 12px; border-radius: 999px; font-family: var(--mono); }
.status-free { background: var(--teal-dim); color: var(--teal); }
.status-trial { background: var(--gold-dim); color: var(--gold); }
.status-wip { background: rgba(154, 160, 178, .12); color: var(--muted); }
.archive-card.wip { opacity: .62; }

/* ============ 关于/伦理 ============ */
.about-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.about-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.about-card h3 { font-size: 16.5px; margin-bottom: 10px; color: var(--gold); }
.about-card p { color: var(--muted); font-size: 14px; }
.ethics { border-left: 3px solid var(--gold); padding: 18px 22px; background: var(--panel); border-radius: 0 var(--radius) var(--radius) 0; margin-top: 22px; }
.ethics h3 { font-size: 16px; color: var(--gold); margin-bottom: 8px; }
.ethics p { font-size: 13.5px; color: var(--muted); }

/* ============ 定价 ============ */
.pricing { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; align-items: stretch; }
.price-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px 26px; text-align: center; display: flex; flex-direction: column; gap: 12px; position: relative;
}
.price-card.featured { border-color: var(--teal); box-shadow: 0 8px 34px rgba(94, 207, 174, .1); }
.price-card .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--teal); color: #06251c; font-size: 12px; font-weight: 700;
  padding: 3px 14px; border-radius: 999px;
}
.price-card h3 { font-size: 17px; }
.price-card .price { font-family: var(--serif); font-size: 34px; font-weight: 700; }
.price-card .price small { font-size: 13px; color: var(--muted); font-weight: 400; }
.price-card ul { list-style: none; text-align: left; margin: 6px 0 14px; flex: 1; }
.price-card ul li { padding: 5px 0; font-size: 13.5px; color: var(--muted); }
.price-card ul li::before { content: "✓ "; color: var(--teal); font-weight: 700; }

/* ============ FAQ ============ */
.faq { max-width: 720px; margin: 0 auto; }
.faq details { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 15px 20px; margin-bottom: 11px; }
.faq summary { font-weight: 600; cursor: pointer; font-size: 14.5px; }
.faq details p { margin-top: 9px; color: var(--muted); font-size: 13.5px; }

/* ============ 页脚 ============ */
footer { border-top: 1px solid var(--border); padding: 26px 0; margin-top: 40px; }
footer .container { display: flex; flex-direction: column; align-items: center; gap: 7px; }
footer .foot-links { display: flex; flex-wrap: wrap; justify-content: center; }
footer .foot-links a { color: var(--muted); margin: 0 9px; font-size: 13px; }
footer .mor { font-size: 12px; color: var(--muted); opacity: .75; }
footer .copyright { font-size: 12.5px; color: var(--muted); }

/* ============ 阅读页 ============ */
body.reader { overflow: hidden; }
.reader-bar {
  height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 0 16px; background: rgba(13, 17, 24, .96); border-bottom: 1px solid var(--border);
  position: relative; z-index: 40;
}
.reader-bar .back { color: var(--muted); font-size: 13.5px; white-space: nowrap; }
.reader-bar .back:hover { color: var(--gold); text-decoration: none; }
.reader-title { font-family: var(--serif); font-size: 15.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.reader-title .reader-no { font-family: var(--mono); font-size: 12px; color: var(--gold); margin-right: 8px; letter-spacing: .15em; }
.reader-title .reader-sub { color: var(--muted); font-size: 12.5px; margin-left: 8px; font-family: var(--mono); }
.reader-meta { display: flex; gap: 8px; align-items: center; white-space: nowrap; }
.chip { font-size: 12px; font-family: var(--mono); padding: 3px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.chip-free { background: var(--teal-dim); color: var(--teal); border-color: transparent; }
.chip-trial { background: var(--gold-dim); color: var(--gold); border-color: transparent; }
.chip-unlocked { background: var(--teal-dim); color: var(--teal); border-color: transparent; }
.archive-frame { display: block; width: 100%; height: calc(100vh - 52px); border: 0; background: #0a0d12; }

/* ============ 付费墙覆盖层 ============ */
.paywall {
  position: fixed; inset: 0; z-index: 100; display: none;
  background: rgba(7, 9, 13, .88); backdrop-filter: blur(7px);
  align-items: center; justify-content: center; padding: 20px;
}
.paywall.show { display: flex; }
.paywall-card {
  max-width: 480px; width: 100%; background: var(--panel);
  border: 1px solid rgba(212, 178, 116, .5); border-radius: 14px;
  padding: 34px 32px 28px; text-align: center; position: relative;
  box-shadow: 0 18px 70px rgba(0, 0, 0, .6);
}
.paywall-card .seal {
  width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%;
  border: 2px solid var(--gold); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 20px; font-weight: 700;
  background: var(--gold-dim); letter-spacing: 0;
}
.paywall-card h2 { font-size: 22px; margin-bottom: 6px; letter-spacing: .06em; }
.paywall-card .pw-sub { color: var(--muted); font-size: 13.5px; margin-bottom: 18px; }
.paywall-card .pw-progress { font-size: 13px; color: var(--teal); font-family: var(--mono); margin-bottom: 20px; }
.paywall-card .pw-buy-area { margin-bottom: 18px; }
.paywall-card .pw-or { font-size: 12px; color: var(--muted); margin: 14px 0 10px; letter-spacing: .2em; }
.paywall-card .pw-activate { display: flex; gap: 8px; }
.paywall-card .pw-activate input {
  flex: 1; padding: 10px 13px; border: 1px solid var(--border); border-radius: 8px;
  background: #0d1220; color: var(--text); font-family: var(--mono); font-size: 13.5px;
}
.paywall-card .pw-activate input:focus { outline: 2px solid rgba(212, 178, 116, .4); }
.paywall-status { margin-top: 14px; font-size: 13px; display: none; text-align: left; }
.paywall-status.ok { display: block; color: var(--ok); }
.paywall-status.err { display: block; color: var(--err); }
.paywall-status.info { display: block; color: var(--gold); }
.paywall-card .pw-foot { margin-top: 16px; font-size: 12px; color: var(--muted); }
.paywall-card .pw-foot a { color: var(--muted); text-decoration: underline; }

/* ============ 表单页（激活/找回） ============ */
.form-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; max-width: 520px; margin: 0 auto;
}
.form-card label { display: block; font-size: 14px; font-weight: 600; margin: 16px 0 6px; }
.form-card input, .form-card select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 15px; background: #0d1220; color: var(--text);
}
.form-card input:focus, .form-card select:focus { outline: 2px solid rgba(212, 178, 116, .4); }
.form-status { margin-top: 18px; padding: 12px 16px; border-radius: 8px; font-size: 14px; display: none; }
.form-status.ok { display: block; background: rgba(111, 207, 151, .1); color: var(--ok); }
.form-status.err { display: block; background: rgba(224, 122, 106, .1); color: var(--err); }
.form-status.info { display: block; background: rgba(212, 178, 116, .08); color: var(--gold); }
.form-card .sub-links { margin-top: 20px; font-size: 13px; color: var(--muted); text-align: center; }

/* ============ 法务页 ============ */
.legal-wrap { max-width: 780px; margin: 0 auto; }
.legal-wrap h2 { text-align: left; margin-bottom: 6px; }
.legal-updated { color: var(--muted); font-size: 13.5px; margin-bottom: 22px; }
.legal-en {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 22px; margin-bottom: 28px; font-size: 13.5px; color: var(--muted);
}
.legal-en h3 { color: var(--gold); font-size: 14px; margin-bottom: 8px; }
.legal-zh h3 { margin: 26px 0 8px; font-size: 17px; color: var(--gold); }
.legal-zh p, .legal-zh li { font-size: 14.5px; color: var(--text); margin-bottom: 6px; }
.legal-zh ul { margin: 6px 0 12px 22px; }
.legal-zh table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 10px 0; }
.legal-zh th, .legal-zh td { padding: 8px 10px; border: 1px solid var(--border); text-align: left; color: var(--muted); }
.legal-zh th { color: var(--text); background: var(--panel2); }

/* ============ 提示条（支付成功等） ============ */
.toast { display: none; margin: 0 auto 8px; max-width: 720px; padding: 13px 18px; border-radius: var(--radius); font-size: 14px; }
.toast.ok { display: block; background: rgba(111, 207, 151, .12); color: var(--ok); border: 1px solid rgba(111, 207, 151, .3); }

/* ============ 响应式 ============ */
@media (max-width: 640px) {
  .hero h1 { font-size: 31px; }
  .reader-title .reader-sub { display: none; }
  .reader-meta .chip-headphone { display: none; }
}