/* SIQ Agent Security 静态站 — 「暖纸 × 墨蓝 × 深金」编辑风
 * 与 siq 设计系统 v2 / gpcapital-governance 同源：暖象牙底 + 衬线标题 + 深金描边点缀。
 * 无构建步骤；字体经 site/vendor/fonts 本地 woff2 引入，不用 CDN。浅色暖纸为唯一主题。 */

@font-face {
  font-family: "Playfair Display";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("./vendor/fonts/playfair-display-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Playfair Display";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./vendor/fonts/playfair-display-latin-600-normal.woff2") format("woff2");
}
@font-face {
  font-family: "DM Serif Display";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./vendor/fonts/dm-serif-display-latin-400-normal.woff2") format("woff2");
}
/* Noto Serif SC 简体中文字重（整包 woff2，浏览器按需缓存） */
@font-face {
  font-family: "Noto Serif SC";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./vendor/fonts/noto-serif-sc-chinese-simplified-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Noto Serif SC";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./vendor/fonts/noto-serif-sc-chinese-simplified-600-normal.woff2") format("woff2");
}
/* 数字统一层：衬线语境中的 0-9 劫持到 DM Serif Display（与控制台 GP Digits 同款手法） */
@font-face {
  font-family: "GP Digits";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("./vendor/fonts/dm-serif-display-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0030-0039;
}

:root {
  color-scheme: light;
  --bg: #f7f4ee;
  --surface: #f3eee2;
  --card: #fdfcf9;
  --ink: #001840;
  --ink-strong: #00102e;
  --text: #12203e;
  --muted: #6c6863;
  --accent: #7c5a0c;
  --gold: #b58a24;
  --border: #e8e1d4;
  --soft: rgb(181 138 36 / 0.08);
  --success: #15803d;
  --danger: #a81018;
  --caution: #b45309;
  --header: rgb(250 248 244 / 96%);
  --code-bg: #001840;
  --code-text: #f2ede2;
  --shadow-card: 0 1px 2px rgb(23 35 64 / 0.05);
  --shadow-panel: 0 8px 30px rgb(23 35 64 / 0.06);
  --shadow-pop: 0 16px 48px rgb(23 35 64 / 0.1);
  --focus-ring: 0 0 0 3px rgb(184 134 11 / 0.16);
  --wrap: 72rem;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-display: "GP Digits", "Playfair Display", "Noto Serif SC", "Songti SC", "STSong", Georgia, serif;
  --font-numeric: "DM Serif Display", "Playfair Display", "Noto Serif SC", Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  background-color: var(--bg);
  overflow-x: clip;
  /* 编辑风竖向发丝线底纹（移动端关闭） */
  background-image:
    linear-gradient(90deg, transparent calc(25% - 1px), rgb(23 35 64 / 0.035) 25%, transparent calc(25% + 1px)),
    linear-gradient(90deg, transparent calc(50% - 1px), rgb(23 35 64 / 0.035) 50%, transparent calc(50% + 1px)),
    linear-gradient(90deg, transparent calc(75% - 1px), rgb(23 35 64 / 0.035) 75%, transparent calc(75% + 1px));
  color: var(--text);
  font: 1rem/1.75 var(--font);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--accent); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid rgb(184 134 11 / 0.5); outline-offset: 2px; box-shadow: var(--focus-ring); }
::selection { background: rgb(201 162 39 / 0.24); }
[hidden] { display: none !important; }
.wrap { width: min(100% - 3rem, var(--wrap)); margin-inline: auto; }
.skip { position: absolute; left: 1rem; top: -5rem; z-index: 30; padding: .7rem 1rem; background: var(--ink); color: var(--bg); border-radius: 0 0 6px 6px; }
.skip:focus { top: .7rem; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--header);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 5rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; min-height: 44px; color: var(--ink); text-decoration: none; flex-shrink: 0; }
.brand-mark { width: 36px; height: 36px; flex: none; border-radius: 8px; }
.brand-name { font-family: var(--font-display); font-size: 1rem; font-weight: 600; letter-spacing: .012em; }
.nav-links { display: flex; flex-wrap: wrap; gap: .25rem 1rem; }
.nav-links a { display: inline-flex; align-items: center; min-height: 44px; color: var(--muted); text-decoration: none; font-size: .875rem; transition: color 160ms ease; }
.nav-links a:hover, .nav-links a[aria-current] { color: var(--accent); }

/* 标题字阶：衬线 600，字距微开，数字自动走 DM Serif Display */
h1, h2, h3 { font-family: var(--font-display); color: var(--ink); font-weight: 600; line-height: 1.3; letter-spacing: .012em; text-wrap: balance; }
h1 { margin: 1rem 0 1.5rem; font-size: clamp(2rem, 3.4vw, 3.2rem); }
h2 { margin: 0 0 1rem; font-size: clamp(1.55rem, 2.25vw, 2rem); }
h3 { margin: .5rem 0 .75rem; font-size: 1.1rem; }
p { margin: 0 0 1rem; }

/* 眉题：深金小字（强调一律 600，全站无 700） */
.eyebrow { margin: 0 0 1.1rem; color: var(--accent); font-size: .75rem; font-weight: 600; letter-spacing: .14em; }

/* 金边胶囊眉题（404 等单页使用）：与控制台 kicker 同一语言 */
.kicker {
  display: inline-flex; width: fit-content; align-items: center;
  margin: 0 0 1.1rem; padding: .3rem .75rem;
  border: 1px solid rgb(181 138 36 / 0.5); border-radius: 999px; background: transparent;
  color: var(--accent); font-size: .8125rem; font-weight: 600; line-height: 1; letter-spacing: .06em;
}

/* hero 直接落在暖纸发丝线上，不再另铺色块 */
.hero { padding: 5.5rem 0 4.5rem; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 3.5rem; align-items: center; }
.lede { font-size: 1.075rem; color: var(--muted); max-width: 40rem; }
.hero-statement { margin: 1.5rem 0; color: var(--ink); font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }

.btn-row, .text-links { display: flex; flex-wrap: wrap; gap: .75rem 1rem; align-items: center; }
/* 按钮：透明底线框，hover 描金变金字；主按钮墨蓝底米白字 */
.btn {
  display: inline-flex; justify-content: center; align-items: center; min-height: 44px;
  padding: .55rem 1.15rem;
  border: 1px solid var(--border); border-radius: 6px;
  background: var(--card); color: var(--text);
  text-decoration: none; font: 600 .9rem/1.5 var(--font);
  cursor: pointer; touch-action: manipulation;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}
.btn:hover { border-color: var(--gold); color: var(--accent); text-decoration: none; }
.btn-primary { background: var(--ink); border-color: var(--ink); color: #fdfcf9; }
.btn-primary:hover { background: var(--ink-strong); border-color: var(--ink-strong); color: #fdfcf9; }
.text-links a { display: inline-flex; align-items: center; min-height: 44px; }
.note { margin: 1.2rem 0 0; font-size: .875rem; color: var(--muted); }

/* 证据链面板：12px 圆角 + 面板影 */
.execution-chain { padding: 1.5rem; border: 1px solid var(--border); border-radius: 12px; background: var(--card); box-shadow: var(--shadow-panel); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: .5rem; color: var(--muted); font-size: .65rem; letter-spacing: .08em; font-weight: 600; }
.chain { margin: 1.6rem 0; padding: 0; list-style: none; }
.chain li { display: flex; gap: 1rem; padding: 1rem 0; }
.chain li + li { border-top: 1px solid var(--border); }
.chain-index {
  flex: none; display: grid; place-items: center; width: 2.5rem; height: 2.5rem;
  border-radius: 10px; background: rgb(181 138 36 / 0.09); color: var(--accent);
  font-family: var(--font-numeric); font-size: 1.05rem; font-variant-numeric: lining-nums tabular-nums;
}
.chain h2 { margin: 0 0 .35rem; font-size: 1.05rem; }
.chain p { margin: 0 0 .4rem; font-size: .9rem; }
.chain code { color: var(--muted); font-size: .75rem; }
.panel-note { margin: 0; color: var(--muted); font-size: .8rem; border-top: 1px solid var(--border); padding-top: 1rem; }

/* 徽章：全圆 chip，语义色公式（6-8% 底 + 25-30% 描边 + 深色文字） */
.badge {
  display: inline-flex; align-items: center; padding: .2rem .6rem;
  border: 1px solid var(--border); border-radius: 999px;
  background: var(--card); color: var(--muted);
  font-size: .75rem; font-weight: 600; letter-spacing: 0; white-space: nowrap;
}
.badge-pass { background: rgb(21 128 61 / 0.08); border-color: rgb(21 128 61 / 0.25); color: var(--success); }
.badge-deny { background: rgb(168 16 24 / 0.07); border-color: rgb(168 16 24 / 0.25); color: var(--danger); }
.badge-caution { background: rgb(180 83 9 / 0.08); border-color: rgb(180 83 9 / 0.3); color: var(--caution); }
.signed-label { color: var(--success); }

.release-strip { border-block: 1px solid var(--border); background: var(--card); }
.release-strip-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1.5rem; padding-block: 1.2rem; font-size: .875rem; }

.section { padding: 4.5rem 0; }
.section-tinted { background: var(--surface); }
.section-intro { max-width: 50rem; color: var(--muted); margin-bottom: 2rem; }

.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; }
.card { padding: 1.5rem; border: 1px solid var(--border); border-radius: 10px; background: var(--card); box-shadow: var(--shadow-card); }
.card p { color: var(--muted); font-size: .95rem; margin-bottom: 0; }
.card > a { display: inline-flex; align-items: center; min-height: 44px; margin-top: 1rem; font-size: .875rem; }
.card-index { color: var(--accent); font-size: .75rem; font-weight: 600; letter-spacing: .06em; }
.card h3 { margin-top: 1rem; }

.scenario-grid, .boundary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.boundary-grid article { border-top: 1px solid var(--border); padding-top: 1rem; }
.boundary-grid p { color: var(--muted); }

/* 表格：米色表头 + 衬线表头字 + 行 hover 暖底描金左条 */
.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow-card); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; font-variant-numeric: tabular-nums; background: var(--card); }
th, td { padding: 1rem 1.25rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
thead th { color: #2b3448; background: var(--surface); font-family: var(--font-display); font-size: .85rem; font-weight: 600; letter-spacing: .02em; }
tbody th { width: 24%; font-weight: 600; }
tbody tr { transition: background 160ms ease, box-shadow 160ms ease; }
tbody tr:hover { background: #faf7f0; box-shadow: inset 2px 0 0 var(--gold); }
tbody tr:last-child > * { border-bottom: 0; }

.split { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 2.5rem; }
.split > *, .hero-grid > * { min-width: 0; }

/* 深色代码面板：墨蓝底暖白字，编辑风唯一的深色区块 */
code { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .875em; overflow-wrap: anywhere; }
pre { margin: 0; padding: 1.2rem; overflow: auto; border-radius: 0 0 8px 8px; background: var(--code-bg); color: var(--code-text); font: .8rem/1.8 ui-monospace, SFMono-Regular, Consolas, monospace; }
pre code { font-size: inherit; overflow-wrap: normal; }
.code-heading { display: flex; justify-content: space-between; align-items: center; gap: .5rem; padding: .55rem .75rem .55rem 1.2rem; border-radius: 8px 8px 0 0; background: var(--code-bg); color: var(--code-text); font-size: .8rem; border-bottom: 1px solid rgb(247 244 238 / 0.14); }
.code-heading :focus-visible { outline-color: rgb(201 162 39 / 0.7); }
.copy-btn { min-height: 44px; padding: .35rem .7rem; background: rgb(247 244 238 / 0.08); color: var(--code-text); border-color: rgb(247 244 238 / 0.28); font-size: .75rem; }
.copy-btn:hover { border-color: var(--gold); color: #fdfcf9; background: rgb(201 162 39 / 0.16); }

.architecture-link { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; margin-top: 2rem; padding: 1.5rem; border: 1px solid var(--border); border-radius: 12px; background: var(--card); box-shadow: var(--shadow-card); }
.architecture-link p { margin: 0; color: var(--muted); }
.architecture-link .btn { flex-shrink: 0; }

.release-files { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .9rem; margin-bottom: 1.5rem; }
.release-files a {
  padding: 1.2rem; border: 1px solid var(--border); border-radius: 10px;
  background: var(--card); box-shadow: var(--shadow-card);
  text-decoration: none; overflow-wrap: anywhere;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}
.release-files a:hover { border-color: var(--gold); box-shadow: var(--shadow-panel); }
.release-files strong, .release-files span { display: block; }
.release-files strong { font-size: .9rem; color: var(--ink); }
.release-files span { margin-top: .5rem; font-size: .8rem; color: var(--muted); }

.extract { margin-top: 1.5rem; padding: .65rem 1.2rem; border: 1px solid var(--border); border-radius: 10px; background: var(--card); box-shadow: var(--shadow-card); }
.extract summary { cursor: pointer; font-weight: 600; padding-block: .7rem; min-height: 44px; }
.extract[open] summary { margin-bottom: .6rem; }
.extract pre { margin-bottom: .7rem; }

.license-panel { padding-left: 2rem; border-left: 1px solid var(--border); }

.site-footer { padding: 2rem 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .8rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 2rem; }
.site-footer p { margin: .4rem 0; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.toc-links { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; margin-top: 1.5rem; }
.toc-links a { display: inline-flex; align-items: center; min-height: 44px; }
.sources { color: var(--muted); font-size: .8rem; overflow-wrap: anywhere; }
.diagram-viewer { position: relative; overflow: hidden; background: var(--card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-card); }
.diagram-controls { position: absolute; right: .75rem; bottom: .75rem; z-index: 1; display: flex; align-items: center; padding: .2rem; border: 1px solid var(--border); border-radius: 8px; background: var(--card); box-shadow: var(--shadow-card); }
.diagram-presets, .diagram-zoom { display: inline-flex; align-items: center; }
.diagram-presets { border-left: 1px solid var(--border); margin-left: .2rem; padding-left: .2rem; }
.diagram-controls button { display: inline-grid; place-items: center; width: 44px; height: 44px; padding: .5rem; border: 0; border-radius: 4px; background: transparent; color: var(--ink); font: inherit; font-size: .8rem; cursor: pointer; }
.diagram-controls button:hover { background: var(--surface); }
.diagram-controls svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.diagram-controls button:disabled { opacity: .45; cursor: default; }
.diagram-scale { min-width: 3rem; text-align: center; color: var(--muted); font-size: .8rem; font-variant-numeric: tabular-nums; }
.diagram-frame { overflow: auto; height: var(--diagram-height, 24rem); min-height: 16rem; max-height: min(65vh, 38rem); padding: 1.25rem 1.25rem 4.75rem; }
.diagram-frame:focus-visible { outline-offset: -3px; }
.diagram-frame.is-pannable { cursor: grab; }
.diagram-frame.is-dragging { cursor: grabbing; user-select: none; }
.diagram-canvas { display: grid; place-items: center; width: max-content; min-width: 100%; min-height: 100%; overflow: visible; font-family: var(--font); line-height: 1.5; }
.diagram-canvas svg { display: block; max-width: none; margin-inline: auto; font-family: var(--font); }
.diagram-hint { margin: .6rem 0 0; color: var(--muted); font-size: .8rem; }
#diagrams .section { padding: 0 0 3rem; }

@media (max-width: 1050px) { .nav { flex-wrap: wrap; padding-block: .75rem; gap: .25rem; } .nav-links { gap: .2rem 1.2rem; } }
@media (max-width: 767px) {
  html { scroll-padding-top: 1rem; }
  body { background-image: none; }
  .site-header { position: static; }
  .wrap { width: min(100% - 2rem, var(--wrap)); }
  .hero { padding: 3rem 0; }
  .hero-grid, .split { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .cards, .scenario-grid, .boundary-grid { grid-template-columns: minmax(0, 1fr); }
  .release-files { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section { padding: 3rem 0; }
  .eyebrow { font-size: .7rem; letter-spacing: .08em; }
  .card { padding: 1.3rem; }
  .execution-chain { padding: 1.1rem; }
  .architecture-link, .footer-inner { flex-direction: column; align-items: flex-start; }
  .license-panel { padding-left: 0; border-left: 0; border-top: 1px solid var(--border); padding-top: 1rem; }
  th, td { padding: .85rem; min-width: 8rem; }
  .table-wrap table { min-width: 36rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }