/* 鄭宇辰 chengyucheng.com — 全站樣式 */

:root {
  --brand: #00666d;
  --brand-strong: #004d52;
  --brand-soft: #e6f1f1;
  --ink: #17232d;
  --ink-2: #44525d;
  --ink-3: #6b7780;
  --paper: #fbfaf7;
  --surface: #ffffff;
  --line: #e3e1db;
  --accent: #b5652b;
  --accent-soft: #f8ece2;
  --navy: #1b2f45;

  --font-sans: "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Heiti TC", system-ui, sans-serif;
  --font-serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", serif;

  --wrap: 1120px;
  --measure: 42rem;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(23 35 45 / 6%), 0 4px 16px rgb(23 35 45 / 5%);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #4fb3b9;
    --brand-strong: #7fcfd3;
    --brand-soft: #14302f;
    --ink: #e7ebee;
    --ink-2: #bcc5cc;
    --ink-3: #8f9aa3;
    --paper: #11171c;
    --surface: #182027;
    --line: #2a343c;
    --accent: #e09a62;
    --accent-soft: #33261c;
    --navy: #0c141b;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%);
    color-scheme: dark;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.8;
  letter-spacing: 0.01em;
}

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

a { color: var(--brand); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { color: var(--brand-strong); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 3px; }

h1, h2, h3 { font-family: var(--font-serif); line-height: 1.4; color: var(--ink); font-weight: 700; letter-spacing: 0.02em; }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.6rem); margin: 0 0 0.75rem; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1vw, 1.75rem); margin: 2.5rem 0 1rem; }
h3 { font-size: 1.2rem; margin: 1.75rem 0 0.6rem; }
p { margin: 0 0 1.1em; }

.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; }

.skip-link { position: absolute; left: 1rem; top: -3rem; background: var(--brand); color: #fff; padding: 0.5rem 1rem; border-radius: var(--radius); z-index: 100; }
.skip-link:focus { top: 1rem; color: #fff; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1rem; }
@media (min-width: 640px) { .wrap { padding: 0 1.5rem; } }

.draft-bar { background: var(--accent); color: #fff; text-align: center; font-size: 0.875rem; padding: 0.35rem 1rem; }

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 4.25rem; gap: 1rem; }

.brand { display: inline-flex; align-items: center; gap: 0.65rem; text-decoration: none; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-family: var(--font-serif); font-weight: 700; font-size: 1.25rem; letter-spacing: 0.12em; }
.brand-en { font-size: 0.72rem; letter-spacing: 0.08em; color: var(--ink-3); }

.site-nav ul { list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font: inherit; font-size: 0.975rem; color: var(--ink-2); text-decoration: none;
  background: none; border: 0; cursor: pointer; padding: 0.5rem 0.75rem; border-radius: 6px;
}
.nav-link:hover, .nav-link[data-active] { color: var(--brand); }
.nav-link[data-active] { font-weight: 600; }

.menu-toggle { display: none; }

@media (min-width: 900px) {
  .site-nav > ul { display: flex; gap: 0.25rem; }
  .has-sub { position: relative; }
  .sub {
    position: absolute; top: calc(100% + 0.25rem); left: 50%; transform: translateX(-50%);
    min-width: 11rem; padding: 0.5rem !important;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
    opacity: 0; visibility: hidden; transition: opacity 0.15s, visibility 0.15s;
  }
  .has-sub:hover .sub, .has-sub:focus-within .sub, .has-sub.open .sub { opacity: 1; visibility: visible; }
  .sub a { display: block; padding: 0.4rem 0.75rem; border-radius: 6px; color: var(--ink-2); text-decoration: none; font-size: 0.95rem; white-space: nowrap; }
  .sub a:hover, .sub a[aria-current] { background: var(--brand-soft); color: var(--brand-strong); }
}

@media (max-width: 899.98px) {
  .menu-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2.75rem; height: 2.75rem; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); cursor: pointer; color: var(--ink);
  }
  .menu-icon, .menu-icon::before, .menu-icon::after { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; position: relative; transition: transform 0.2s; }
  .menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
  .menu-icon::before { top: -6px; }
  .menu-icon::after { top: 6px; }
  .menu-toggle[aria-expanded="true"] .menu-icon { background: transparent; }
  .menu-toggle[aria-expanded="true"] .menu-icon::before { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }

  .js .site-nav { display: none; }
  .header-inner { flex-wrap: wrap; }
  .site-nav { flex-basis: 100%; }
  .js .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--paper); border-bottom: 1px solid var(--line);
    max-height: calc(100vh - 4.25rem); overflow-y: auto; padding: 0.5rem 1rem 1.25rem;
  }
  .js .site-nav.open { display: block; }
  .site-nav > ul > li { border-bottom: 1px solid var(--line); }
  .nav-link { width: 100%; justify-content: space-between; padding: 0.8rem 0.25rem; font-size: 1.05rem; }
  .nav-link svg { transition: transform 0.2s; }
  .has-sub.open .nav-link svg { transform: rotate(180deg); }
  .js .sub { display: none; }
  .has-sub.open .sub { display: block; }
  .sub { padding: 0 0 0.6rem 0.75rem !important; }
  .sub a { display: block; padding: 0.45rem 0; color: var(--ink-2); text-decoration: none; }
  .sub a[aria-current] { color: var(--brand); font-weight: 600; }
}

/* ---------- Common blocks ---------- */

.section { padding: 3.5rem 0; }
.section + .section { padding-top: 0; }
.section-alt { background: var(--surface); border-block: 1px solid var(--line); padding: 3.5rem 0; }
.section-alt + .section { padding-top: 3.5rem; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.section-head h2 { margin: 0; }
.eyebrow { display: block; font-size: 0.8rem; letter-spacing: 0.16em; color: var(--brand); font-weight: 600; margin-bottom: 0.4rem; }
.lead { font-size: 1.15rem; color: var(--ink-2); max-width: var(--measure); }
.muted { color: var(--ink-3); }
.small { font-size: 0.9rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.75rem 1.4rem; border-radius: 999px; font-weight: 600; font-size: 1rem; text-decoration: none;
  border: 1.5px solid var(--brand); transition: background 0.15s, color 0.15s;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-strong); border-color: var(--brand-strong); color: #fff; }
.btn-ghost { color: var(--brand); background: transparent; }
.btn-ghost:hover { background: var(--brand-soft); }
@media (prefers-color-scheme: dark) { .btn-primary, .btn-primary:hover { color: #0b1215; } }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }

.link-arrow { font-weight: 600; text-decoration: none; white-space: nowrap; }
.link-arrow::after { content: " →"; }

.page-head { padding: 3rem 0 2rem; border-bottom: 1px solid var(--line); margin-bottom: 2.5rem; }
.page-head .lead { margin-bottom: 0; }

.breadcrumbs { font-size: 0.85rem; color: var(--ink-3); margin-bottom: 1.25rem; }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.25rem; margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 0.35rem; color: var(--line); }
.breadcrumbs a { color: var(--ink-3); text-decoration: none; }
.breadcrumbs a:hover { color: var(--brand); text-decoration: underline; }

.prose { max-width: var(--measure); }
.prose h2 { padding-top: 0.5rem; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.prose li { margin-bottom: 0.4em; }
.prose blockquote { margin: 1.5rem 0; padding: 0.5rem 0 0.5rem 1.25rem; border-left: 3px solid var(--brand); color: var(--ink-2); }
.prose table { width: 100%; border-collapse: collapse; margin: 1.25rem 0 1.75rem; font-size: 0.95rem; }
@media (max-width: 640px) { .prose table { display: block; overflow-x: auto; } }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--line); min-width: 7rem; }
.prose th { background: var(--brand-soft); color: var(--ink); font-weight: 600; }

.note {
  background: var(--brand-soft); border-radius: var(--radius); padding: 1rem 1.25rem; margin: 1.5rem 0; font-size: 0.97rem;
}
.note > :last-child { margin-bottom: 0; }
.note-warn { background: var(--accent-soft); }
.note strong { color: var(--ink); }

.grid { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.5rem;
}
.panel h3 { margin-top: 0; }
.panel > :last-child { margin-bottom: 0; }
a.panel { display: block; text-decoration: none; color: var(--ink); transition: border-color 0.15s, transform 0.15s; }
a.panel:hover { border-color: var(--brand); transform: translateY(-2px); }
a.panel p { color: var(--ink-2); font-size: 0.97rem; }
.panel-path { font-size: 0.8rem; color: var(--ink-3); font-family: ui-monospace, Consolas, monospace; }

.steps { counter-reset: step; list-style: none; padding: 0 !important; }
.steps li { counter-increment: step; position: relative; padding-left: 2.75rem; margin-bottom: 1rem; }
.steps li::before {
  content: counter(step); position: absolute; left: 0; top: 0.1rem;
  width: 1.9rem; height: 1.9rem; border-radius: 50%; background: var(--brand); color: #fff;
  font-size: 0.9rem; font-weight: 700; display: grid; place-items: center;
}
@media (prefers-color-scheme: dark) { .steps li::before { color: #0b1215; } }

dl.facts { display: grid; grid-template-columns: 7rem 1fr; gap: 0.5rem 1rem; margin: 1rem 0 1.5rem; }
dl.facts dt { color: var(--ink-3); font-size: 0.95rem; }
dl.facts dd { margin: 0; }
@media (max-width: 480px) { dl.facts { grid-template-columns: 1fr; gap: 0; } dl.facts dd { margin-bottom: 0.75rem; } }

/* ---------- Home ---------- */

.hero { padding: 4rem 0 3.5rem; position: relative; overflow: hidden; }
.hero-grid { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.4fr 1fr; } }
.hero h1 { font-size: clamp(1.75rem, 1.1rem + 2.6vw, 2.9rem); text-wrap: balance; line-height: 1.35; margin-bottom: 1.25rem; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero-mark { justify-self: center; width: min(320px, 70vw); aspect-ratio: 1; position: relative; }
.hero-mark img { width: 100%; height: 100%; opacity: 0.95; }
.hero-mark::before {
  content: ""; position: absolute; inset: -12%; border-radius: 50%;
  background: radial-gradient(circle, var(--brand-soft) 0%, transparent 70%); z-index: -1;
}
@media (max-width: 899.98px) { .hero-mark { display: none; } }
.hero-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1.25rem; padding: 0; list-style: none; }
.hero-tags li { font-size: 0.85rem; padding: 0.2rem 0.75rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); background: var(--surface); }

.cat-grid { display: grid; gap: 1rem; }
@media (min-width: 640px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .cat-grid { grid-template-columns: repeat(3, 1fr); } }
.cat-grid a.panel h3 { margin-bottom: 0.4rem; font-size: 1.15rem; }
.cat-grid a.panel p { margin-bottom: 0.5rem; }

.author-strip { display: grid; gap: 2rem; align-items: start; }
@media (min-width: 800px) { .author-strip { grid-template-columns: 1fr 1.6fr; } }
.author-card { background: var(--navy); color: #e8eef2; border-radius: var(--radius); padding: 2rem; }
.author-card .brand-name { color: #fff; font-size: 1.6rem; }
.author-card .brand-en { color: #9fb3c2; font-size: 0.85rem; }
.author-card img { width: 64px; height: 64px; margin-bottom: 1rem; }
.author-card p { color: #c8d4dc; margin: 1rem 0 0; font-size: 0.95rem; }

/* ---------- Article lists ---------- */

.card-list { display: grid; gap: 1.25rem; }
@media (min-width: 720px) { .card-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .card-list.cols-3 { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.5rem; display: flex; flex-direction: column; transition: border-color 0.15s;
}
.card:hover { border-color: var(--brand); }
.card-meta { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin-bottom: 0.6rem; }
.card-cat { font-size: 0.82rem; font-weight: 600; color: var(--brand); text-decoration: none; letter-spacing: 0.05em; }
.card-title { margin: 0 0 0.6rem; font-size: 1.2rem; line-height: 1.5; }
.card-title a { color: var(--ink); text-decoration: none; }
.card-title a:hover { color: var(--brand); }
.card-summary { color: var(--ink-2); font-size: 0.95rem; flex: 1; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.card-date { color: var(--ink-3); font-size: 0.85rem; margin: 0; }

.badge { display: inline-block; font-size: 0.75rem; padding: 0.1rem 0.55rem; border-radius: 4px; font-weight: 600; }
.badge-disclosure { background: var(--accent-soft); color: var(--accent); }
.badge-draft { background: var(--accent); color: #fff; }

.empty-state { background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius); padding: 2rem 1.5rem; text-align: center; color: var(--ink-2); }
.empty-state > :last-child { margin-bottom: 0; }

.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 2rem; padding: 0; list-style: none; }
.chip-row a { display: inline-block; padding: 0.35rem 0.9rem; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); text-decoration: none; color: var(--ink-2); font-size: 0.92rem; }
.chip-row a:hover { border-color: var(--brand); color: var(--brand); }
.chip-row .count { color: var(--ink-3); font-size: 0.8rem; margin-left: 0.25rem; }

/* ---------- Article page ---------- */

.article-layout { display: grid; gap: 2.5rem; padding-bottom: 3rem; }
@media (min-width: 1040px) { .article-layout { grid-template-columns: minmax(0, 1fr) 240px; } }
.article-head { padding: 2.5rem 0 1.5rem; }
.article-head .card-meta { margin-bottom: 0.9rem; }
.article-summary { font-size: 1.12rem; color: var(--ink-2); max-width: var(--measure); }
.byline { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; font-size: 0.9rem; color: var(--ink-3); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 0.75rem 0; margin: 1.5rem 0 0; }
.byline a { color: var(--ink-2); font-weight: 600; }

.disclosure-box { border: 1px solid var(--accent); background: var(--accent-soft); border-radius: var(--radius); padding: 0.9rem 1.2rem; margin: 0 0 2rem; font-size: 0.95rem; max-width: var(--measure); }
.disclosure-box strong { color: var(--accent); margin-right: 0.4rem; }

.key-points { background: var(--brand-soft); border-left: 4px solid var(--brand); border-radius: 0 var(--radius) var(--radius) 0; padding: 1rem 1.25rem; margin: 0 0 2rem; }
.key-points h2 { font-family: var(--font-sans); font-size: 0.85rem; letter-spacing: 0.12em; color: var(--brand); margin: 0 0 0.5rem; padding: 0; }
.key-points ul { margin: 0; padding-left: 1.2em; }
.key-points li { margin-bottom: 0.35rem; }
.key-points li:last-child { margin-bottom: 0; }
.faq h3 { font-size: 1.05rem; margin: 1.5rem 0 0.4rem; }
.faq h3::before { content: "Q. "; color: var(--brand); }

.toc { position: sticky; top: 5.5rem; font-size: 0.9rem; border-left: 2px solid var(--line); padding-left: 1rem; }
.toc h2 { font-family: var(--font-sans); font-size: 0.8rem; letter-spacing: 0.12em; color: var(--ink-3); margin: 0 0 0.6rem; }
.toc ol { list-style: none; padding: 0; margin: 0; }
.toc li { margin-bottom: 0.45rem; line-height: 1.5; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--brand); }
@media (max-width: 1039.98px) { .toc-wrap { display: none; } }

.sources { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); font-size: 0.93rem; }
.sources h2 { font-size: 1.1rem; margin-top: 0; }
.sources ol { padding-left: 1.4em; }
.sources li { margin-bottom: 0.35rem; word-break: break-word; }

.author-box { display: flex; gap: 1.25rem; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.5rem; margin-top: 2.5rem; max-width: var(--measure); }
.author-box img { flex: none; width: 56px; height: 56px; }
.author-box h2 { font-size: 1.1rem; margin: 0 0 0.35rem; }
.author-box p { font-size: 0.95rem; color: var(--ink-2); margin-bottom: 0.5rem; }

.cta-box { background: var(--navy); color: #dfe8ee; border-radius: var(--radius); padding: 1.6rem 1.75rem; margin-top: 2rem; max-width: var(--measure); }
.cta-box h2 { color: #fff; font-size: 1.2rem; margin: 0 0 0.5rem; }
.cta-box p { color: #c3d0d8; font-size: 0.97rem; }
.cta-box a { color: #8fd6db; font-weight: 600; }

.checklist { list-style: none; padding-left: 0 !important; }
.checklist li { position: relative; padding-left: 1.75rem; }
.checklist li::before { content: ""; position: absolute; left: 0.1rem; top: 0.45em; width: 0.95rem; height: 0.95rem; border: 2px solid var(--brand); border-radius: 3px; }

/* ---------- Service page (press release) ---------- */

.svc-hero { display: grid; gap: 2rem; align-items: center; padding: 2.5rem 0 2.5rem; border-bottom: 1px solid var(--line); margin-bottom: 2.5rem; }
@media (min-width: 960px) { .svc-hero { grid-template-columns: 1.25fr 1fr; gap: 3rem; } }
.svc-hero h1 { font-size: clamp(1.8rem, 1.2rem + 2.4vw, 2.8rem); text-wrap: balance; }
.svc-hero .lead { margin-bottom: 0; }

.price-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 0.75rem; box-shadow: var(--shadow); }
.price-card-top { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; }
.price-main, .price-side { border-radius: 12px; padding: 1rem 1.1rem; display: flex; flex-direction: column; gap: 0.25rem; }
.price-main { background: var(--brand); color: #fff; }
.price-side { background: var(--paper); border: 1px solid var(--line); }
.price-label { font-size: 0.8rem; font-weight: 600; opacity: 0.85; }
.price-num { font-size: clamp(1.5rem, 1.1rem + 1vw, 2rem); font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; white-space: nowrap; }
.price-num small { font-size: 0.85rem; margin-left: 0.15rem; font-weight: 600; }
@media (prefers-color-scheme: dark) { .price-main { color: #0b1215; } }
.price-card dl { display: grid; grid-template-columns: 4.5rem 1fr; margin: 0.75rem 0.5rem 0.25rem; font-size: 0.92rem; }
.price-card dt, .price-card dd { padding: 0.6rem 0; border-top: 1px solid var(--line); margin: 0; }
.price-card dt { color: var(--ink-3); }
.price-card dd { font-weight: 600; color: var(--ink); text-align: right; }

.svc-section { margin: 3rem 0; }
.svc-section > h2 { margin-top: 0; }
.svc-intro { color: var(--ink-2); max-width: var(--measure); }

.plan-cards { display: grid; gap: 1rem; margin: 1.5rem 0 1rem; }
@media (min-width: 860px) { .plan-cards { grid-template-columns: repeat(3, 1fr); } }
.plan-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem 1.5rem; display: flex; flex-direction: column; }
.plan-card:nth-child(2) { border-color: var(--brand); box-shadow: 0 0 0 1px var(--brand); }
.plan-meta { font-size: 0.82rem; color: var(--brand); font-weight: 600; margin: 0 0 0.3rem; }
.plan-card h3 { margin: 0 0 0.5rem; font-size: 1.25rem; }
.plan-price { margin: 0; color: var(--ink-2); }
.plan-price span { font-size: 2rem; font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }
.plan-words { font-size: 0.88rem; color: var(--ink-3); margin: 0 0 0.75rem; }
.plan-card ul { list-style: none; padding: 0; margin: 0 0 1rem; font-size: 0.95rem; }
.plan-card li { margin-bottom: 0.35rem; }
.check { color: var(--brand); font-weight: 700; margin-right: 0.4rem; }
.plan-fit { margin: auto 0 0; padding-top: 0.75rem; border-top: 1px solid var(--line); font-size: 0.9rem; color: var(--ink-2); }

.tag { display: inline-block; font-size: 0.78rem; font-weight: 600; padding: 0.15rem 0.6rem; border-radius: 999px; background: var(--brand-soft); color: var(--brand-strong); }
.panel .tag { margin-top: 0.25rem; }
.news-groups .tag { margin: 0 0 0.75rem; }
.group-lead { font-size: 0.95rem; color: var(--ink-2); margin-bottom: 1rem; }
.group-list { margin: 0; }
.group-list dt { font-weight: 700; color: var(--ink); margin-top: 0.75rem; }
.group-list dt:first-child { margin-top: 0; }
.group-list dd { margin: 0.15rem 0 0; font-size: 0.93rem; color: var(--ink-2); }
.cta-wide { max-width: none; }

/* ---------- Footer ---------- */

.site-footer { background: var(--navy); color: #c3d0d8; margin-top: 4rem; font-size: 0.93rem; }
.footer-grid { display: grid; gap: 2rem; padding-top: 3rem; padding-bottom: 2rem; }
@media (min-width: 720px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.site-footer a { color: #dfe8ee; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.35rem; }
.footer-h { font-family: var(--font-sans); font-size: 0.8rem; letter-spacing: 0.14em; color: #8ea3b2; margin: 0 0 0.75rem; }
.brand-footer { color: #fff; margin-bottom: 1rem; }
.brand-footer:hover { color: #fff; text-decoration: none !important; }
.brand-footer .brand-en { color: #8ea3b2; }
.footer-about p { max-width: 26rem; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem; border-top: 1px solid rgb(255 255 255 / 10%); padding-top: 1.25rem; padding-bottom: 1.75rem; font-size: 0.82rem; color: #8ea3b2; }
.footer-bottom p { margin: 0; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
.site-footer .footer-legal a { color: #b4c4cf; }
.site-footer .footer-legal a:hover { color: #fff; }

/* ---------- 404 ---------- */
.not-found { text-align: center; padding: 5rem 0 3rem; }
.not-found .code { font-family: var(--font-serif); font-size: 4rem; color: var(--brand); line-height: 1; margin-bottom: 1rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}

@media print {
  .site-header, .site-footer, .toc-wrap, .cta-box { display: none; }
  body { background: #fff; color: #000; }
}

/* ---------- Utilities（CSP 不允許 inline style） ---------- */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: 1rem; }
.mt-lg { margin-top: 2.5rem; }
.mb-md { margin-bottom: 1.5rem; }
.section-flush { padding-bottom: 0; }
.center-block { margin-inline: auto; }
.btn-row-center { justify-content: center; }