/* ============================================================
   GSMD-RPT-2026-0830-01 — 資安防護網設計手冊網站
   純靜態樣式，無建置流程。
   ============================================================ */

/* 字型由本站提供（子集化，見 .github/scripts/build_fonts.py；授權 assets/fonts/OFL.txt） */
@font-face {
  font-family: "Noto Sans TC";
  src: url("../fonts/noto-sans-tc.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}
@font-face {
  font-family: "Noto Serif TC";
  src: url("../fonts/noto-serif-tc.woff2") format("woff2");
  font-weight: 600 700;
  font-display: swap;
}

:root {
  --ink: #0e1a2b;
  --ink-2: #16263c;
  --paper: #f6f7f9;
  --card: #ffffff;
  --text: #1c2733;
  --text-dim: #5a6a7a;
  --line: #dde3ea;
  --accent: #0e7c86;
  --accent-soft: #e3f2f3;
  --gold: #b9852c;
  --gold-soft: #f7efe0;
  --hero-text: #eef3f8;
  --hero-dim: #9fb1c4;

  --ev-verified: #1d7a46;
  --ev-verified-bg: #e5f4ea;
  --ev-vendor: #a06a10;
  --ev-vendor-bg: #faf1dd;
  --ev-third: #2a5fa8;
  --ev-third-bg: #e7eefa;
  --ev-unverified: #b03a3a;
  --ev-unverified-bg: #fae8e8;

  --radius: 12px;
  --shadow: 0 1px 2px rgba(14, 26, 43, .06), 0 8px 24px rgba(14, 26, 43, .07);
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Noto Serif TC", "PingFang TC", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #0a1420;
    --ink-2: #101d2e;
    --paper: #0d1622;
    --card: #14202f;
    --text: #dbe4ee;
    --text-dim: #8fa1b5;
    --line: #24344a;
    --accent: #3db2bc;
    --accent-soft: #10303a;
    --gold: #d4a54a;
    --gold-soft: #33290f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .35);

    --ev-verified: #5cc98a;
    --ev-verified-bg: #10301d;
    --ev-vendor: #e0b05e;
    --ev-vendor-bg: #33290f;
    --ev-third: #7ba7e0;
    --ev-third-bg: #14263f;
    --ev-unverified: #e08585;
    --ev-unverified-bg: #3a1717;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 頂部導覽 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--hero-text);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.nav-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--hero-text);
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }

.brand .mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #1a4b66);
  display: grid;
  place-items: center;
  font-size: 15px;
  flex: none;
}

.brand small {
  display: block;
  font-weight: 400;
  font-size: 11px;
  color: var(--hero-dim);
  letter-spacing: .08em;
  line-height: 1.2;
}

.site-nav { display: flex; gap: 2px; flex-wrap: wrap; }

.site-nav a {
  color: var(--hero-dim);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 14px;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--hero-text); background: rgba(255, 255, 255, .07); text-decoration: none; }
.site-nav a.active { color: var(--hero-text); background: rgba(255, 255, 255, .12); font-weight: 600; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(255, 255, 255, .25);
  color: var(--hero-text);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    padding: 8px 16px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
  }
  .site-nav.open { display: flex; }
}

/* ---------- 查證基準日提示（全站） ---------- */
.asof-banner {
  background: var(--gold-soft);
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.6;
}
.asof-banner p { max-width: 1120px; margin: 0 auto; padding: 8px 24px; }
.asof-banner strong { color: var(--gold); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(14, 124, 134, .35), transparent 60%),
    radial-gradient(700px 400px at 5% 110%, rgba(185, 133, 44, .18), transparent 60%),
    var(--ink);
  color: var(--hero-text);
  padding: 72px 24px 64px;
}

.hero-inner { max-width: 1120px; margin: 0 auto; }

.doc-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--hero-dim);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 22px;
}
.doc-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.35;
  margin: 0 0 12px;
  font-weight: 700;
  max-width: 21em;
}

.hero .subtitle {
  color: var(--hero-dim);
  font-size: clamp(14px, 1.8vw, 17px);
  margin: 0 0 28px;
  max-width: 46em;
}

.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 28px; font-size: 13.5px; color: var(--hero-dim); }
.hero-meta strong { color: var(--hero-text); font-weight: 600; }

.hero-cta { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  border-radius: 10px;
  padding: 11px 22px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(14, 124, 134, .35); }
.btn-ghost { color: var(--hero-text); border: 1px solid rgba(255, 255, 255, .3); }
.btn-ghost:hover { background: rgba(255, 255, 255, .08); }

/* 頁面標題（非首頁） */
.page-hero { padding: 56px 24px 44px; }
.page-hero .kicker {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
  text-transform: uppercase;
}

/* ---------- 主要版面 ---------- */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.section { padding: 56px 0 8px; }

.section-head { margin-bottom: 28px; max-width: 46em; }

.section-head .kicker {
  font-size: 12.5px;
  letter-spacing: .18em;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 6px;
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 30px);
  margin: 0 0 8px;
  line-height: 1.4;
}

.section-head p { color: var(--text-dim); margin: 0; }
.section-head p + p { margin-top: 8px; }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card h3 { margin: 0 0 8px; font-size: 17px; line-height: 1.5; }
.card p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

a.card { display: block; color: inherit; transition: transform .12s ease, border-color .12s ease; }
a.card:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--accent); }

.card .chip {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 6px;
  padding: 2px 10px;
  margin-bottom: 12px;
}

/* 統計數字卡 */
.stat { text-align: left; }
.stat .num {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.15;
}
.stat .label { font-size: 13.5px; color: var(--text-dim); margin-top: 6px; }
.stat .src { font-size: 12px; color: var(--text-dim); opacity: .8; margin-top: 8px; }

/* 發現卡（編號） */
.finding { position: relative; padding-left: 24px; }
.span-all { grid-column: 1 / -1; }

/* 首頁結論／定義等強調卡片 */
.card.lead { border-left: 5px solid var(--accent); font-size: 16.5px; line-height: 1.9; }
.card.lead.gold { border-left-color: var(--gold); font-size: 16px; }
.card.lead p { font-size: inherit; }
.card p.text, .card.lead p { color: var(--text); }
.finding::before {
  content: "";
  position: absolute;
  left: 0; top: 24px; bottom: 24px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--accent), transparent);
}
.finding .no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gold);
  margin-bottom: 6px;
}

/* ---------- 證據等級徽章 ---------- */
.ev {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  border-radius: 6px;
  padding: 1px 8px;
  white-space: nowrap;
  vertical-align: baseline;
}
.ev-verified { color: var(--ev-verified); background: var(--ev-verified-bg); }
.ev-vendor { color: var(--ev-vendor); background: var(--ev-vendor-bg); }
.ev-third { color: var(--ev-third); background: var(--ev-third-bg); }
.ev-unverified { color: var(--ev-unverified); background: var(--ev-unverified-bg); }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); box-shadow: var(--shadow); }

table { border-collapse: collapse; width: 100%; font-size: 14.5px; min-width: 640px; }

th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th {
  background: var(--accent-soft);
  color: var(--text);
  font-size: 13px;
  letter-spacing: .04em;
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: color-mix(in srgb, var(--accent-soft) 40%, transparent); }

/* ---------- 分層架構圖（第 III 部） ---------- */
.layer-stack { display: grid; gap: 8px; }

.layer {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--accent);
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 14.5px;
}
.layer.crosscut { border-left-color: var(--gold); }
.layer .tag { font-weight: 700; font-family: var(--font-serif); color: var(--accent); font-size: 17px; }
.layer.crosscut .tag { color: var(--gold); }
.layer .ch { font-size: 12.5px; color: var(--text-dim); white-space: nowrap; }
.layer strong { font-weight: 600; }
.layer a { color: inherit; }

/* ---------- 提示區塊 ---------- */
.notice {
  border-left: 4px solid var(--gold);
  background: var(--gold-soft);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  font-size: 14.5px;
  margin: 24px 0;
}
.notice strong { color: var(--gold); }

/* ---------- 頁尾 ---------- */
.site-footer {
  margin-top: 72px;
  background: var(--ink);
  color: var(--hero-dim);
  padding: 40px 24px;
  font-size: 13.5px;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
  justify-content: space-between;
  align-items: center;
}
.site-footer a { color: var(--hero-text); }

/* ============================================================
   內文章節頁（第 I–IV 部）——本區樣式為各部內文共用範本
   ============================================================ */

/* sticky header 之下的錨點偏移 */
[id] { scroll-margin-top: 76px; }

/* ---------- 頁內目錄 ---------- */
.toc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin-top: 40px;
}
.toc h2 {
  font-size: 12.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  margin: 0 0 12px;
}
.toc ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 20px; }
@media (max-width: 700px) { .toc ol { grid-template-columns: 1fr; } }
.toc a { display: flex; gap: 12px; align-items: baseline; padding: 7px 10px; border-radius: 8px; color: inherit; font-size: 14.5px; }
.toc a:hover { background: var(--accent-soft); text-decoration: none; }
.toc a b { font-family: var(--font-serif); color: var(--accent); flex: none; }

/* ---------- 章節標題 ---------- */
.chapter-head { border-top: 3px solid var(--accent); padding-top: 20px; margin-bottom: 24px; }
.chapter-head .kicker {
  font-size: 12.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 6px;
}
.chapter-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.4;
  margin: 0 0 10px;
}
.chapter-head .lead { color: var(--text-dim); margin: 0; max-width: 48em; }

/* ---------- 內文 ---------- */
.prose h3 {
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.5;
  margin: 38px 0 12px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}
.prose h4 { font-size: 15.5px; margin: 26px 0 8px; color: var(--accent); }
.prose p { margin: 0 0 14px; max-width: 54em; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 24px; max-width: 54em; }
.prose li { margin-bottom: 6px; }
.prose li > ul, .prose li > ol { margin: 6px 0 0; }
.prose .table-wrap { margin: 18px 0 6px; }
.prose .grid { margin: 18px 0; }
.prose .card p:last-child { margin-bottom: 0; }
/* 卡片內標題不套用內文 h3 的左側色條 */
.prose .card h3 {
  border-left: none;
  padding-left: 0;
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-size: 16px;
}
.prose dfn { font-style: normal; font-weight: 600; color: var(--text); }

/* 文字架構圖（等寬字，橫向可捲動） */
.ascii {
  background: var(--ink);
  color: var(--hero-text);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 18px 0;
  overflow-x: auto;
  font-family: ui-monospace, "Cascadia Mono", Consolas, "Noto Sans Mono CJK TC", monospace;
  font-size: 12.5px;
  line-height: 1.65;
}

/* 表格／數據下方的來源註記 */
.src-note { font-size: 12.5px; color: var(--text-dim); margin: 8px 0 22px; max-width: 54em; }

/* 推論／結論方塊（青色）與警示方塊（金色，見 .notice） */
.notice.accent { border-left-color: var(--accent); background: var(--accent-soft); }
.notice.accent strong { color: var(--accent); }
.notice p { margin: 0 0 10px; }
.notice p:last-child, .notice ul:last-child, .notice ol:last-child { margin-bottom: 0; }
.notice ul, .notice ol { margin: 0 0 10px; padding-left: 22px; }

/* 本章可稽核產出 */
.deliverables {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin: 32px 0 0;
}
.deliverables h4 { margin: 0 0 12px; font-size: 14px; letter-spacing: .1em; color: var(--gold); }
.deliverables ul { list-style: none; margin: 0; padding: 0; max-width: none; }
.deliverables li { position: relative; padding-left: 26px; margin-bottom: 9px; font-size: 14.5px; }
.deliverables li:last-child { margin-bottom: 0; }
.deliverables li::before { content: "☐"; position: absolute; left: 0; top: -1px; color: var(--gold); font-size: 16px; }

/* 回目錄 */
.to-top { margin: 22px 0 0; font-size: 13px; }
.to-top a { color: var(--text-dim); }
.to-top a:hover { color: var(--accent); }

/* ---------- 前後頁導覽 ---------- */
.pager { display: flex; justify-content: space-between; gap: 16px; margin: 48px 0 0; flex-wrap: wrap; }
.pager a {
  flex: 1 1 240px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  color: inherit;
}
.pager a:hover { text-decoration: none; border-color: var(--accent); }
.pager a small { display: block; color: var(--text-dim); font-size: 12px; margin-bottom: 4px; }
.pager a.next { text-align: right; }

/* ---------- 無障礙：跳至主要內容、鍵盤焦點 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
}
.skip-link:focus { top: 12px; text-decoration: none; }
main:focus { outline: none; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.site-header :focus-visible { outline-color: #7fd3da; }

/* ---------- 程式碼區塊複製按鈕 ---------- */
.code-wrap { position: relative; }
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, .1);
  color: var(--hero-text);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-family: var(--font-sans);
  cursor: pointer;
}
.copy-btn:hover { background: rgba(255, 255, 255, .2); }

/* ---------- 列印（董事會／稽核紙本、存 PDF） ---------- */
@media print {
  /* 深色模式下列印也一律用淺色配色 */
  :root {
    --paper: #fff; --card: #fff; --text: #000; --text-dim: #333; --line: #bbb;
    --accent: #0e7c86; --accent-soft: #e3f2f3; --gold: #b9852c; --gold-soft: #f7efe0;
    --ev-verified: #1d7a46; --ev-verified-bg: #e5f4ea;
    --ev-vendor: #a06a10; --ev-vendor-bg: #faf1dd;
    --ev-third: #2a5fa8; --ev-third-bg: #e7eefa;
    --ev-unverified: #b03a3a; --ev-unverified-bg: #fae8e8;
  }
  body { font-size: 11pt; line-height: 1.6; background: #fff; color: #000; }
  .site-header, .skip-link, .hero-cta, .toc, .to-top, .pager, .copy-btn { display: none !important; }
  .hero, .page-hero { background: none; color: #000; padding: 0 0 12pt; }
  .hero *, .page-hero * { color: #000 !important; }
  .container { max-width: none; padding: 0; }
  .section { break-before: auto; }
  .chapter-head, h2, h3, h4 { break-after: avoid; }
  .card, .notice, .deliverables, tr, .ascii { break-inside: avoid; box-shadow: none; }
  .table-wrap { overflow: visible; box-shadow: none; }
  table { min-width: 0; font-size: 9.5pt; }
  tbody tr:hover { background: none; }
  .ascii { background: #f4f4f4; color: #000; white-space: pre-wrap; border: 1px solid #bbb; }
  .ev { border: 1px solid currentColor; }
  a { color: #000; text-decoration: underline; }
  .site-footer { border-top: 1px solid #bbb; background: none; }
  .site-footer, .site-footer a { color: #333 !important; }
}