@import url("product-detail-standard.css?v=20260726-related-resources-v1");
@import url("product-list-standard.css?v=20260723-ac-list-standard-v2");

/* ============================================================
   家電君 — 家電資訊與決策平台 Mockup
   Design Tokens（規格書 §26 Visual Design System）
   ============================================================ */
:root {
  /* Color tokens */
  --color-bg: #FBFAF8;
  --color-surface: #FFFFFF;
  --color-surface-subtle: #F5F3EF;
  --color-text-primary: #1F2733;
  --color-text-secondary: #4B5563;
  --color-text-muted: #8B929E;
  --color-border: #E8E5DF;
  --color-border-strong: #CFCAC0;
  --color-brand: #0F766E;
  --color-brand-hover: #0C5F58;
  --color-brand-soft: #E9F4F2;
  --color-success: #15803D;
  --color-success-soft: #EAF6EE;
  --color-warning: #B45309;
  --color-warning-soft: #FCF3E7;
  --color-danger: #B91C1C;
  --color-danger-soft: #FBECEC;
  --color-info: #1D4ED8;
  --color-info-soft: #EBF0FD;

  /* Typography（§26.4–26.5） */
  --font-sans: system-ui, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;

  /* Spacing 4px base（§26.6） */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-7: 48px; --sp-8: 64px; --sp-9: 96px;

  /* Radius（§26.7） */
  --r-sm: 6px; --r-md: 10px; --r-lg: 16px;

  /* Shadow — 只用於 dropdown / modal / floating tray（§26.8） */
  --shadow-float: 0 8px 28px rgba(31, 39, 51, .14);
  --shadow-drop: 0 4px 16px rgba(31, 39, 51, .10);

  --header-h: 68px;
  --content-max: 1200px;
  --article-max: 720px;
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-brand); text-decoration: none; }
a:hover { color: var(--color-brand-hover); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0 0 var(--sp-3); font-weight: 700; }
h1 { font-size: 36px; }
h2 { font-size: 28px; }
h3 { font-size: 22px; }
h4 { font-size: 18px; }
p { margin: 0 0 var(--sp-4); }
:focus-visible { outline: 2px solid var(--color-brand); outline-offset: 2px; }

.container { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--sp-5); }
.section { padding: var(--sp-8) 0; }
.section--tight { padding: var(--sp-7) 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-4); margin-bottom: var(--sp-5); }
.section-head h2 { margin: 0; }
.section-head .see-all { font-size: 15px; font-weight: 500; white-space: nowrap; }
.section-sub { color: var(--color-text-secondary); margin-top: -4px; }
.muted { color: var(--color-text-muted); }
.small { font-size: 14px; }


/* ============ Header（§8） ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  max-width: var(--content-max); margin: 0 auto; padding: 0 var(--sp-5);
  height: var(--header-h);
  display: flex; align-items: center; gap: var(--sp-5);
}
.logo { display: flex; align-items: center; flex-shrink: 0; }
.logo .site-logo { display: block; width: 132px; height: 44px; object-fit: contain; }
.main-nav { display: flex; align-items: center; gap: var(--sp-2); }
.main-nav > a, .main-nav > button {
  font: inherit; font-size: 15px; font-weight: 500; color: var(--color-text-primary);
  background: none; border: 0; cursor: pointer;
  padding: 8px 12px; border-radius: var(--r-sm); white-space: nowrap;
}
.main-nav > a:hover, .main-nav > button:hover { background: var(--color-surface-subtle); color: var(--color-text-primary); }
.main-nav > .active { color: var(--color-brand); font-weight: 700; }

.header-search { flex: 1; max-width: 420px; position: relative; }
.header-search input {
  width: 100%; height: 42px; font: inherit; font-size: 15px;
  padding: 0 14px 0 40px;
  border: 1px solid var(--color-border); border-radius: 999px;
  background: var(--color-surface-subtle); color: var(--color-text-primary);
}
.header-search input:focus { background: #fff; border-color: var(--color-brand); outline: none; }
.header-search .search-ic {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  color: var(--color-text-muted); pointer-events: none;
}
.header-actions { display: flex; align-items: center; gap: var(--sp-1); margin-left: auto; }
.icon-btn {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px;
  min-width: 52px; height: 48px; border: 0; background: none; cursor: pointer;
  border-radius: var(--r-sm); color: var(--color-text-secondary); font-size: 11px; font-family: inherit;
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn:hover { background: var(--color-surface-subtle); color: var(--color-text-primary); }
.menu-btn { display: none; }
.m-search, .m-tool, .m-learn, .m-db { display: none; }
.db-count { margin-left: auto; font-size: 12px; font-weight: 600; color: var(--color-brand); background: var(--color-brand-soft); padding: 1px 8px; border-radius: 999px; }
.db-tag { margin-left: auto; font-size: 11.5px; color: var(--color-text-muted); background: var(--color-surface-subtle); padding: 1px 8px; border-radius: 999px; }
.mega-col a.db-soon { color: var(--color-text-muted); }
.mega-col a.db-soon:hover { background: var(--color-surface-subtle); }

/* Autocomplete dropdown（§18.3 分組） */
.ac-panel {
  position: absolute; top: 48px; left: 0; right: 0; z-index: 120;
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--r-md);
  box-shadow: var(--shadow-drop); overflow-x: hidden; overflow-y: auto; display: none;
  max-height: min(70vh, 560px);
}
.ac-panel.open { display: block; }
.ac-group { padding: 6px 0; border-bottom: 1px solid var(--color-border); }
.ac-group:last-child { border-bottom: 0; }
.ac-group .ac-label { font-size: 12px; color: var(--color-text-muted); padding: 4px 16px; }
.ac-item { display: flex; align-items: center; gap: 10px; padding: 8px 16px; font-size: 14.5px; color: var(--color-text-primary); }
.ac-item:hover { background: var(--color-brand-soft); color: var(--color-text-primary); }
.ac-item.is-active { background: var(--color-brand-soft); color: var(--color-text-primary); }
.ac-item .t { color: var(--color-text-muted); font-size: 12px; margin-left: auto; }
.search-ac-item { align-items: center; }
.search-result-icon { width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center; flex: 0 0 30px; font-size: 19px; }
.search-result-copy { min-width: 0; display: flex; flex-direction: column; line-height: 1.35; }
.search-result-copy strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-result-copy small { color: var(--color-text-muted); font-size: 11.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-suggest-label { padding: 10px 16px 6px; color: var(--color-text-muted); font-size: 12px; font-weight: 700; }
.search-suggest-hint { padding: 16px; color: var(--color-text-secondary); font-size: 13px; line-height: 1.65; }
.search-suggest-all { display: block; padding: 12px 16px; border-top: 1px solid var(--color-border); color: var(--color-brand); font-size: 13.5px; font-weight: 700; }
.search-suggest-all:hover, .search-suggest-all.is-active { background: var(--color-brand-soft); color: var(--color-brand); }

/* Mega menu（§8.4） */
.mega {
  position: absolute; left: 0; right: 0; top: var(--header-h); z-index: 110;
  background: #fff; border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-drop); display: none;
}
.mega.open { display: block; }
.mega-inner {
  max-width: var(--content-max); margin: 0 auto; padding: var(--sp-6) var(--sp-5);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-6);
}
.mega-col h4 { font-size: 13px; color: var(--color-text-muted); font-weight: 600; letter-spacing: 1px; margin-bottom: var(--sp-3); }
.mega-col a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; margin: 0 -10px; border-radius: var(--r-sm); color: var(--color-text-primary); font-size: 15px; }
.mega-col a:hover { background: var(--color-brand-soft); }
.mega-col .emoji { font-size: 18px; width: 24px; text-align: center; }

/* ============ Breadcrumb（§23.3） ============ */
.breadcrumb { font-size: 13.5px; color: var(--color-text-muted); padding: var(--sp-4) 0 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-brand); }
.breadcrumb .sep { color: var(--color-border-strong); }
.breadcrumb .cur { color: var(--color-text-secondary); font-weight: 500; }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  height: 44px; padding: 0 var(--sp-5); border-radius: var(--r-sm);
  border: 1px solid transparent; transition: background .15s, border-color .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--color-brand); color: #fff; }
.btn-primary:hover { background: var(--color-brand-hover); color: #fff; }
.btn-secondary { background: #fff; border-color: var(--color-border-strong); color: var(--color-text-primary); }
.btn-secondary:hover { border-color: var(--color-brand); color: var(--color-brand); }
.btn-ghost { background: none; color: var(--color-brand); padding: 0 var(--sp-3); }
.btn-sm { height: 36px; padding: 0 var(--sp-4); font-size: 14px; }
.btn-lg { height: 52px; padding: 0 var(--sp-6); font-size: 16px; }
.btn-block { width: 100%; }

/* ============ Chips ============ */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; color: var(--color-text-secondary);
  background: #fff; border: 1px solid var(--color-border); border-radius: 999px;
  padding: 7px 16px; cursor: pointer; font-family: inherit;
}
.chip:hover { border-color: var(--color-brand); color: var(--color-brand); }
.chip.active { background: var(--color-brand-soft); border-color: var(--color-brand); color: var(--color-brand); font-weight: 600; }
.chip .x { color: var(--color-text-muted); font-size: 13px; }
.chip-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

/* ============ Badges ============ */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
}
.badge-fit { background: var(--color-success-soft); color: var(--color-success); }
.badge-warn { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-info { background: var(--color-info-soft); color: var(--color-info); }
.badge-neutral { background: var(--color-surface-subtle); color: var(--color-text-secondary); }
.badge-brand { background: var(--color-brand-soft); color: var(--color-brand); }

/* ============ Cards ============ */
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--r-md); padding: var(--sp-5);
}
a.card { color: inherit; display: block; transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--color-brand); color: inherit; transform: translateY(-2px); }

/* Task cards（§9.2） */
.task-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.card.task-card { display: flex; flex-direction: column; gap: 6px; }
.task-card .task-ic {
  width: 44px; height: 44px; border-radius: var(--r-md);
  background: var(--color-brand-soft); color: var(--color-brand);
  display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 6px;
}
.task-card h3 { font-size: 17px; margin: 0; }
.task-card p { font-size: 14px; color: var(--color-text-secondary); margin: 0; }
.task-card .go { margin-top: auto; font-size: 14px; font-weight: 600; color: var(--color-brand); padding-top: 8px; }

/* Category grid（§9.3） */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.card.cat-card { display: flex; align-items: center; gap: var(--sp-4); padding: var(--sp-4) var(--sp-5); }
.cat-card .emoji {
  font-size: 26px; width: 52px; height: 52px; flex-shrink: 0;
  background: var(--color-surface-subtle); border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
}
.cat-card h3 { font-size: 16px; margin: 0; }
.cat-card p { font-size: 13px; color: var(--color-text-muted); margin: 0; }

/* ============ Product Card（§11.6） ============ */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.product-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.product-card { display: flex; flex-direction: column; padding: var(--sp-4); position: relative; }
.product-card .p-img {
  height: 150px; border-radius: var(--r-sm); background: var(--color-surface-subtle);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  color: var(--color-text-muted); font-size: 40px; margin-bottom: var(--sp-3);
}
.product-card .p-img .cap { font-size: 11px; letter-spacing: 1px; }
.product-card .p-brand { font-size: 12.5px; color: var(--color-text-muted); font-weight: 600; letter-spacing: .5px; }
.product-card .p-model { font-size: 16px; font-weight: 700; margin: 2px 0 8px; }
.product-card .p-model a { color: inherit; }
.product-card .p-specs { list-style: none; margin: 0 0 10px; padding: 0; font-size: 13.5px; color: var(--color-text-secondary); }
.product-card .p-specs li { display: flex; justify-content: space-between; padding: 3px 0; border-bottom: 1px dashed var(--color-border); }
.product-card .p-specs li:last-child { border-bottom: 0; }
.product-card .p-fit { margin-bottom: 10px; }
.product-card .p-actions { margin-top: auto; display: flex; gap: var(--sp-2); }
.product-card .p-actions .btn { flex: 1; }

/* ============ Hero ============ */
.home-hero { padding: var(--sp-9) 0 var(--sp-8); text-align: center; }
.home-hero h1 { font-size: 44px; letter-spacing: .5px; margin-bottom: var(--sp-3); }
.home-hero .lead { font-size: 18px; color: var(--color-text-secondary); margin-bottom: var(--sp-6); }
.hero-search { max-width: 640px; margin: 0 auto var(--sp-4); position: relative; }
.hero-search input {
  width: 100%; height: 58px; font: inherit; font-size: 17px;
  padding: 0 130px 0 52px; border: 1.5px solid var(--color-border-strong); border-radius: var(--r-lg);
  background: #fff;
}
.hero-search input:focus { border-color: var(--color-brand); outline: none; }
.hero-search .search-ic { position: absolute; left: 20px; top: 50%; transform: translateY(-50%); color: var(--color-text-muted); }
.hero-search .btn { position: absolute; right: 8px; top: 7px; }
.hero-search .home-search-panel { top: 66px; text-align: left; }
.hero-hot { font-size: 14px; color: var(--color-text-muted); display: flex; gap: var(--sp-2); justify-content: center; align-items: center; flex-wrap: wrap; }

/* Category hub hero（§10.1） */
.hub-hero { padding: var(--sp-7) 0; display: flex; align-items: center; gap: var(--sp-7); }
.hub-hero .hub-text { flex: 1; }
.hub-hero h1 { font-size: 38px; }
.hub-hero .lead { font-size: 17px; color: var(--color-text-secondary); max-width: 480px; }
.hub-hero .hub-visual {
  width: 300px; height: 200px; border-radius: var(--r-lg); flex-shrink: 0;
  background: var(--color-brand-soft);
  display: flex; align-items: center; justify-content: center; font-size: 72px;
}
.hero-ctas { display: flex; gap: var(--sp-3); margin-top: var(--sp-5); }

/* ============ Direct Answer Box（§14.2） ============ */
.answer-box {
  background: var(--color-brand-soft); border-left: 4px solid var(--color-brand);
  border-radius: var(--r-md); padding: var(--sp-5);
  margin: var(--sp-5) 0;
}
.answer-box .label { font-size: 12.5px; font-weight: 700; letter-spacing: 2px; color: var(--color-brand); margin-bottom: 8px; }
.answer-box .big { font-size: 19px; font-weight: 700; margin-bottom: 8px; line-height: 1.5; }
.answer-box p:last-child { margin-bottom: 0; }

/* Warning box（§15.5 Safety escalation） */
.warning-box {
  background: var(--color-danger-soft); border-left: 4px solid var(--color-danger);
  border-radius: var(--r-md); padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0;
}
.warning-box .label { font-weight: 700; color: var(--color-danger); margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
.warning-box p { margin: 0; font-size: 15px; }

/* Expert note */
.expert-note {
  background: var(--color-info-soft); border-left: 4px solid var(--color-info);
  border-radius: var(--r-md); padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0; font-size: 15px;
}
.expert-note .label { font-weight: 700; color: var(--color-info); margin-bottom: 4px; }

/* ============ Next Step Module（§5.3 / §14.6） ============ */
.next-step {
  background: var(--color-surface); border: 1.5px solid var(--color-brand);
  border-radius: var(--r-md); padding: var(--sp-5); margin: var(--sp-6) 0;
}
.next-step .ns-context { font-size: 15px; color: var(--color-text-secondary); margin-bottom: var(--sp-3); }
.next-step .ns-context b { color: var(--color-text-primary); }
.next-step h3 { font-size: 17px; margin-bottom: var(--sp-3); }
.ns-list { display: flex; flex-direction: column; gap: var(--sp-2); }
.ns-list a {
  display: flex; align-items: center; gap: 10px; padding: 12px 16px;
  background: var(--color-surface-subtle); border-radius: var(--r-sm);
  font-weight: 600; font-size: 15px; color: var(--color-text-primary);
}
.ns-list a:hover { background: var(--color-brand-soft); color: var(--color-brand); }
.ns-list a .arrow { color: var(--color-brand); font-weight: 700; }
.ns-list a .why { font-weight: 400; font-size: 13px; color: var(--color-text-muted); margin-left: auto; }

/* ============ Spec Table（§12.5） ============ */
.spec-group { margin-bottom: var(--sp-5); }
.spec-group h4 {
  font-size: 14px; letter-spacing: 1px; color: var(--color-text-muted);
  background: var(--color-surface-subtle); padding: 8px 16px; border-radius: var(--r-sm); margin-bottom: 0;
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table th, .spec-table td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--color-border); }
.spec-table th { width: 38%; font-weight: 500; color: var(--color-text-secondary); }
.spec-table td { font-weight: 500; }

/* ============ Comparison Table（§13.4） ============ */
.compare-wrap { overflow-x: auto; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; border: 1px solid var(--color-border); border-radius: var(--r-md); overflow: hidden; }
.compare-table th, .compare-table td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; min-width: 180px; }
.compare-table thead th { background: var(--color-surface-subtle); }
.compare-table .row-label { font-weight: 500; color: var(--color-text-secondary); background: var(--color-bg); min-width: 140px; position: sticky; left: 0; }
.compare-table .diff td:not(.row-label) { background: #FDF9EC; }
.compare-table .win { color: var(--color-success); font-weight: 700; }
.compare-table.only-diff tr.same { display: none; }
.compare-head-card { text-align: center; }
.compare-head-card .p-img { height: 100px; background: var(--color-surface-subtle); border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; font-size: 34px; margin-bottom: 8px; }

/* Verdict（§13.5） */
.verdict-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
.verdict-item { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-4); background: #fff; border: 1px solid var(--color-border); border-radius: var(--r-md); }
.verdict-item .cond { font-weight: 600; flex: 1; }
.verdict-item .pick { font-weight: 700; color: var(--color-brand); white-space: nowrap; }

/* ============ Compare Tray（§13.2 floating → shadow 允許） ============ */
.compare-tray {
  position: fixed; right: var(--sp-5); bottom: var(--sp-5); z-index: 200;
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--r-lg);
  box-shadow: var(--shadow-float); padding: var(--sp-4); width: 300px;
  display: none;
}
.compare-tray.open { display: block; }
.compare-tray h4 { font-size: 14px; margin-bottom: var(--sp-3); display: flex; justify-content: space-between; }
.compare-tray h4 .clear { font-size: 12.5px; color: var(--color-text-muted); cursor: pointer; font-weight: 400; }
.tray-items { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--sp-3); }
.tray-item { display: flex; align-items: center; gap: 8px; font-size: 13.5px; background: var(--color-surface-subtle); padding: 7px 12px; border-radius: var(--r-sm); }
.tray-item .rm { margin-left: auto; cursor: pointer; color: var(--color-text-muted); border: 0; background: none; font-size: 14px; }
.tray-item .rm:hover { color: var(--color-danger); }

/* ============ Filters（§11） ============ */
.explorer-layout { display: grid; grid-template-columns: 250px 1fr; gap: var(--sp-6); align-items: start; }
.filter-sidebar { position: sticky; top: calc(var(--header-h) + 16px); }
.filter-block { border-bottom: 1px solid var(--color-border); padding: var(--sp-4) 0; }
.filter-block:first-child { padding-top: 0; }
.filter-block h4 { font-size: 14px; margin-bottom: var(--sp-3); }
.filter-block label { display: flex; align-items: center; gap: 8px; font-size: 14.5px; color: var(--color-text-secondary); padding: 4px 0; cursor: pointer; }
.filter-block input[type="checkbox"] { accent-color: var(--color-brand); width: 16px; height: 16px; }
.filter-block .count { color: var(--color-text-muted); font-size: 12.5px; margin-left: auto; }
.active-filter-bar { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; margin: var(--sp-4) 0; }
.results-toolbar { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); margin-bottom: var(--sp-4); }
.results-toolbar select { font: inherit; font-size: 14px; padding: 8px 12px; border-radius: var(--r-sm); border: 1px solid var(--color-border); background: #fff; }

/* ============ Anchor Nav（§12.4） ============ */
.anchor-nav {
  position: sticky; top: var(--header-h); z-index: 90;
  background: var(--color-bg); border-bottom: 1px solid var(--color-border);
  overflow-x: auto; white-space: nowrap;
}
.anchor-nav .inner { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--sp-5); display: flex; gap: var(--sp-2); }
.anchor-nav a {
  padding: 12px 14px; font-size: 14.5px; font-weight: 500; color: var(--color-text-secondary);
  border-bottom: 2.5px solid transparent; flex-shrink: 0;
}
.anchor-nav a:hover, .anchor-nav a.active { color: var(--color-brand); border-bottom-color: var(--color-brand); }

/* ============ Product model page（§12.1） ============ */
.pm-atf { display: grid; grid-template-columns: 440px 1fr; gap: var(--sp-7); padding: var(--sp-6) 0; align-items: start; }
.spec-sections { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-6); }
.spec-sections > div { min-width: 0; }
.product-card .p-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 9px; min-height: 24px; }
.pm-gallery .main {
  height: 360px; background: var(--color-surface-subtle); border-radius: var(--r-lg);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  color: var(--color-text-muted); font-size: 84px;
}
.pm-gallery .main .cap { font-size: 12px; letter-spacing: 2px; }
.pm-gallery .thumbs { display: flex; gap: var(--sp-2); margin-top: var(--sp-3); }
.pm-gallery .thumbs div { width: 64px; height: 64px; background: var(--color-surface-subtle); border-radius: var(--r-sm); border: 1px solid var(--color-border); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--color-text-muted); }
.pm-info .p-brand { font-size: 14px; font-weight: 700; letter-spacing: 1px; color: var(--color-text-muted); }
.pm-info h1 { font-size: 32px; margin: 4px 0 6px; }
.pm-info .positioning { font-size: 17px; color: var(--color-text-secondary); margin-bottom: var(--sp-4); }
.pm-primary-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-2); margin-bottom: var(--sp-5); }
.pm-primary-specs .ps { background: var(--color-surface-subtle); border-radius: var(--r-sm); padding: 10px 14px; }
.pm-primary-specs .ps .k { font-size: 12.5px; color: var(--color-text-muted); }
.pm-primary-specs .ps .v { font-size: 16px; font-weight: 700; }
.pm-cta-row { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
.external-note { font-size: 12.5px; color: var(--color-text-muted); margin-top: 8px; }

/* Quick verdict（§12.2） */
.qv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.qv-card h4 { display: flex; gap: 8px; align-items: center; font-size: 15.5px; }
.qv-card ul { margin: 0; padding-left: 20px; font-size: 14.5px; color: var(--color-text-secondary); }
.qv-card li { margin-bottom: 4px; }

/* Relation cards（§12.6） */
.rel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.rel-card .rel-type { font-size: 12.5px; font-weight: 700; color: var(--color-brand); letter-spacing: 1px; margin-bottom: 8px; }
.rel-card .rel-name { font-weight: 700; font-size: 15.5px; margin-bottom: 4px; }
.rel-card .rel-reason { font-size: 13.5px; color: var(--color-text-secondary); margin: 0; }
.rel-card.with-product-thumb { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 12px; align-items: start; padding: 14px; }
.rel-card.with-product-thumb .rl-thumb { width: 72px; height: 72px; }
.rel-card.with-product-thumb .rl-body { display: flex; min-width: 0; flex-direction: column; }
.rel-card.with-product-thumb .rel-type { margin-bottom: 3px; }
.rel-card.with-product-thumb .rel-name { overflow-wrap: anywhere; }
.rel-card.with-product-thumb .r-why { color: var(--color-text-secondary); font-size: 13px; line-height: 1.45; margin-bottom: 4px; }

/* ============ Wizard（§15.2） ============ */
.wizard { max-width: 560px; }
.wizard-progress { display: flex; gap: 6px; margin-bottom: var(--sp-4); }
.wizard-progress span { height: 4px; flex: 1; background: var(--color-border); border-radius: 999px; }
.wizard-progress span.done { background: var(--color-brand); }
.wizard h3 { font-size: 20px; }
.wizard-options { display: flex; flex-direction: column; gap: var(--sp-2); margin: var(--sp-4) 0; }
.wizard-options button {
  font: inherit; font-size: 15.5px; font-weight: 500; text-align: left; cursor: pointer;
  padding: 14px 18px; background: #fff; border: 1px solid var(--color-border-strong); border-radius: var(--r-md);
  transition: border-color .15s, background .15s;
}
.wizard-options button:hover { border-color: var(--color-brand); background: var(--color-brand-soft); }
.wizard .back-link { font-size: 14px; color: var(--color-text-muted); background: none; border: 0; cursor: pointer; padding: 0; font-family: inherit; }
.wizard .back-link:hover { color: var(--color-brand); }
.wizard-result { background: var(--color-surface-subtle); border-radius: var(--r-md); padding: var(--sp-5); }
.wizard-result ol { padding-left: 20px; margin: 0 0 var(--sp-3); }

/* ============ Tool（§17） ============ */
.tool-layout { display: grid; grid-template-columns: 420px 1fr; gap: var(--sp-6); align-items: start; }
.tool-form .field { margin-bottom: var(--sp-4); }
.tool-form label.f-label { display: block; font-size: 14.5px; font-weight: 600; margin-bottom: 8px; }
.tool-form input[type="number"] {
  width: 100%; font: inherit; font-size: 16px; padding: 11px 14px;
  border: 1px solid var(--color-border-strong); border-radius: var(--r-sm);
}
.toggle-row { display: flex; gap: var(--sp-2); }
.toggle-row .chip { flex: 1; justify-content: center; }
.tool-result-panel { display: none; }
.tool-result-panel.show { display: block; }
.result-big {
  background: var(--color-brand-soft); border-radius: var(--r-md); padding: var(--sp-5); text-align: center; margin-bottom: var(--sp-4);
}
.result-big .k { font-size: 14px; color: var(--color-brand); font-weight: 600; }
.result-big .v { font-size: 40px; font-weight: 800; color: var(--color-brand); line-height: 1.2; }
.result-big .note { font-size: 13.5px; color: var(--color-text-secondary); }

/* ============ Article / Guide（§14） ============ */
.article-layout { display: grid; grid-template-columns: 240px minmax(0, var(--article-max)); gap: var(--sp-7); align-items: start; justify-content: center; }
.article-toc { position: sticky; top: calc(var(--header-h) + 24px); font-size: 14px; }
.article-toc h4 { font-size: 13px; letter-spacing: 1px; color: var(--color-text-muted); }
.article-toc a { display: block; padding: 5px 0 5px 12px; color: var(--color-text-secondary); border-left: 2px solid var(--color-border); }
.article-toc a:hover, .article-toc a.active { color: var(--color-brand); border-left-color: var(--color-brand); }
.article-meta { display: flex; align-items: center; gap: var(--sp-3); font-size: 13.5px; color: var(--color-text-muted); margin: var(--sp-3) 0 var(--sp-5); flex-wrap: wrap; }
.article-meta .avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--color-brand-soft); color: var(--color-brand); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }
.article-toc-inline {
  margin: var(--sp-5) 0 var(--sp-6); padding: 12px 16px;
  border: 1px solid var(--color-border); border-radius: var(--r-md); background: var(--color-surface-subtle);
}
.article-toc-inline summary { cursor: pointer; font-weight: 700; color: var(--color-text-primary); }
.article-toc-inline nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 20px; padding: 12px 0 2px; }
.article-toc-inline a { color: var(--color-text-secondary); font-size: 14px; line-height: 1.5; }
.article-toc-inline a:hover { color: var(--color-brand); }
.article-body h2 { font-size: 26px; margin-top: var(--sp-7); }
.article-body h3 { font-size: 20px; margin-top: var(--sp-6); }
.article-body p, .article-body li { color: var(--color-text-secondary); font-size: 16.5px; line-height: 1.85; }
.article-body table { width: 100%; border-collapse: collapse; font-size: 15px; margin: var(--sp-4) 0; }
.article-body th, .article-body td { border: 1px solid var(--color-border); padding: 10px 14px; text-align: left; }
.article-body th { background: var(--color-surface-subtle); }

.article-faq details {
  border: 1px solid var(--color-border); border-radius: var(--r-md);
  background: var(--color-surface); margin: var(--sp-3) 0; padding: 0 var(--sp-4);
}
.article-faq summary {
  cursor: pointer; color: var(--color-text-primary); font-weight: 700;
  font-size: 16px; line-height: 1.55; padding: 15px 30px 15px 0;
}
.article-faq details p { margin: 0; padding: 0 0 16px; }
.article-faq details[open] { border-color: var(--color-brand); }
.img-credit a { color: var(--color-text-muted); text-decoration: underline; text-underline-offset: 2px; }

/* Inline contextual CTA（§14.5） */
.inline-cta {
  display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap;
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0;
}
.inline-cta .txt { flex: 1; font-size: 15px; min-width: 200px; }
.inline-cta .txt b { display: block; }

/* Inline mini tool（§14.3） */
.mini-tool { background: var(--color-surface); border: 1.5px solid var(--color-brand); border-radius: var(--r-md); padding: var(--sp-5); margin: var(--sp-5) 0; }
.mini-tool h3 { font-size: 17px; margin-bottom: var(--sp-4); }
.mini-tool .row { display: flex; gap: var(--sp-3); align-items: center; flex-wrap: wrap; margin-bottom: var(--sp-3); }
.mini-tool input[type="number"] { width: 90px; font: inherit; font-size: 15px; padding: 9px 12px; border: 1px solid var(--color-border-strong); border-radius: var(--r-sm); }
.mini-tool .mt-result { display: none; background: var(--color-brand-soft); border-radius: var(--r-sm); padding: var(--sp-3) var(--sp-4); font-weight: 600; margin-top: var(--sp-3); }
.mini-tool .mt-result.show { display: block; }

/* 冷氣故障碼資料庫 */
.ec-search-grid { display: grid; grid-template-columns: 1fr 1.25fr 1fr auto; gap: var(--sp-3); align-items: end; }
.ec-search-grid label { display: grid; gap: 6px; font-size: 13px; color: var(--color-text-secondary); font-weight: 600; }
.ec-search-grid input, .ec-search-grid select, #brandCodeFilter {
  width: 100%; height: 44px; padding: 0 12px; border: 1px solid var(--color-border-strong);
  border-radius: var(--r-sm); background: #fff; color: var(--color-text-primary); font: inherit; font-size: 15px;
}
.ec-status { margin: var(--sp-4) 0; color: var(--color-text-secondary); }
.ec-results { display: grid; gap: var(--sp-3); }
.ec-result { padding: var(--sp-5); }
.ec-result h3 { font-size: 18px; margin: 6px 0; }
.ec-result .ec-code { display: flex; align-items: center; gap: 8px; color: var(--color-text-secondary); }
.ec-result .ec-code strong { font-size: 22px; color: var(--color-text-primary); }
.ec-result dl { display: grid; grid-template-columns: 130px 1fr; gap: 8px 12px; margin: 14px 0; font-size: 14.5px; }
.ec-result dt { font-weight: 700; }
.ec-result dd { margin: 0; color: var(--color-text-secondary); }
.ec-brand-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-3); }
.ec-brand-grid .card { padding: var(--sp-4); }
.ec-brand-grid h3 { font-size: 18px; }
.ec-quality { margin: var(--sp-4) 0; color: var(--color-text-secondary); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.ec-table { min-width: 1020px; }
.ec-table th:first-child, .ec-table td:first-child { position: sticky; left: 0; background: var(--color-surface); z-index: 1; }
.ec-table td { vertical-align: top; font-size: 14px; }
.ec-sub { display: block; margin-top: 5px; color: var(--color-text-muted); font-size: 12px; }

/* ============ Search results page ============ */
.search-page { max-width: 920px; }
.search-page-head { padding: var(--sp-6) 0 var(--sp-5); }
.search-page-head h1 { margin: 4px 0 8px; font-size: clamp(30px, 4vw, 42px); }
.search-page-form { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; margin-top: var(--sp-5); }
.search-page-form .search-ic { position: absolute; left: 17px; top: 50%; transform: translateY(-50%); color: var(--color-text-muted); pointer-events: none; }
.search-page-form input { width: 100%; min-width: 0; height: 52px; padding: 0 18px 0 50px; border: 1.5px solid var(--color-border-strong); border-radius: var(--r-md); background: #fff; color: var(--color-text-primary); font: inherit; font-size: 16px; }
.search-page-form input:focus { border-color: var(--color-brand); outline: 3px solid color-mix(in srgb, var(--color-brand) 13%, transparent); }
.search-page-form .btn { min-width: 96px; }
.search-status { margin: 14px 0 0; color: var(--color-text-secondary); font-size: 14px; }
.search-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.search-filter { border: 1px solid var(--color-border); cursor: pointer; font: inherit; }
.search-filter.active { border-color: var(--color-brand); background: var(--color-brand); color: #fff; }
.search-results { min-height: 320px; }
.sr-group { margin-bottom: var(--sp-6); }
.sr-group > h3 { font-size: 14px; letter-spacing: 1.5px; color: var(--color-text-muted); border-bottom: 1px solid var(--color-border); padding-bottom: 8px; }
.sr-item { display: flex; gap: var(--sp-4); padding: var(--sp-4) 0; border-bottom: 1px solid var(--color-border); align-items: flex-start; }
.sr-item:last-child { border-bottom: 0; }
.sr-item .ic { width: 44px; height: 44px; border-radius: var(--r-sm); background: var(--color-surface-subtle); display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.sr-item h4 { margin: 0 0 2px; font-size: 16.5px; }
.sr-item p { margin: 0; font-size: 14px; color: var(--color-text-secondary); }
.sr-item .type { font-size: 12px; color: var(--color-text-muted); }
.search-empty { padding: clamp(32px, 6vw, 64px) 24px; text-align: center; }
.search-empty h2 { margin: 8px 0; font-size: 22px; }
.search-empty p { margin: 0; color: var(--color-text-secondary); }
.search-empty-icon { font-size: 44px; }
.search-limit-note { padding: 14px 16px; background: var(--color-surface-subtle); border-radius: var(--r-sm); color: var(--color-text-secondary); font-size: 13.5px; }

/* ============ Resume research（§9.5） ============ */
.resume-card { background: linear-gradient(135deg, var(--color-brand-soft), #fff 70%); border: 1px solid var(--color-border); }
.resume-card ul { list-style: none; padding: 0; margin: var(--sp-3) 0 var(--sp-4); }
.resume-card li { padding: 4px 0; font-size: 15px; color: var(--color-text-secondary); }
.resume-card li b { color: var(--color-text-primary); }

/* ============ Toast ============ */
.toast {
  position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%) translateY(20px); z-index: 300;
  background: var(--color-text-primary); color: #fff; font-size: 14.5px; font-weight: 500;
  padding: 12px 22px; border-radius: 999px; box-shadow: var(--shadow-float);
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Footer ============ */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--color-border); margin-top: var(--sp-8); }
.footer-inner { max-width: var(--content-max); margin: 0 auto; padding: var(--sp-7) var(--sp-5); display: grid; grid-template-columns: minmax(240px, 2fr) 1fr 1fr; gap: var(--sp-7); }
.footer-inner h4 { font-size: 14px; letter-spacing: 1px; color: var(--color-text-muted); }
.footer-inner a { display: block; padding: 4px 0; color: var(--color-text-secondary); font-size: 14.5px; }
.footer-inner a:hover { color: var(--color-brand); }
.footer-brand p { font-size: 14px; color: var(--color-text-muted); max-width: 280px; }
.footer-logo { display: inline-flex !important; padding: 0 !important; margin-bottom: var(--sp-3); }
.footer-logo img { display: block; width: 154px; height: auto; }
.footer-bottom { border-top: 1px solid var(--color-border); }
.footer-bottom .inner { max-width: var(--content-max); margin: 0 auto; padding: var(--sp-4) var(--sp-5); font-size: 13px; color: var(--color-text-muted); display: flex; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap; }


/* ============ Utility rows ============ */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.list-links { display: flex; flex-direction: column; gap: var(--sp-2); }
.list-links a {
  display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--r-md); padding: 13px 18px; color: var(--color-text-primary); font-weight: 500; font-size: 15px;
}
.list-links a:hover { border-color: var(--color-brand); color: var(--color-brand); }
.list-links a .meta { margin-left: auto; font-size: 13px; color: var(--color-text-muted); font-weight: 400; }

/* ============ 產品照片 ============ */
.p-img { overflow: hidden; }
a.p-img { cursor: pointer; }
.p-img img, .pm-gallery .main img {
  width: 100%; height: 100%; object-fit: contain; display: block;
}
.p-img.has-photo, .pm-gallery .main.has-photo { background: #fff; border: 1px solid var(--color-border); padding: 8px; }
.img-credit { font-size: 12px; color: var(--color-text-muted); margin-top: 8px; }
.pm-gallery a.main { cursor: zoom-in; transition: border-color .15s ease, box-shadow .15s ease; }
.pm-gallery a.main:hover, .pm-gallery a.main:focus-visible { border-color: var(--color-brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand) 14%, transparent); }

/* 手機版篩選側欄展開 */
.filter-sidebar.open { display: block !important; margin-bottom: 16px; }

/* ============ RWD（§25 Mobile-first 規則以桌機優先實作、mobile 覆寫） ============ */
@media (max-width: 1023px) {
  .task-grid, .cat-grid, .product-grid, .rel-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mega-inner { grid-template-columns: repeat(2, 1fr); }
  .explorer-layout, .tool-layout, .article-layout { grid-template-columns: minmax(0, 1fr); }
  .explorer-layout > main { min-width: 0; }
  .filter-sidebar { position: static; display: none; }
  .article-toc { display: none; }
  .pm-atf { grid-template-columns: 1fr; gap: var(--sp-5); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .mobile-filter-bar { display: flex !important; }
}
@media (max-width: 767px) {
  h1 { font-size: 28px; }
  .home-hero { padding: var(--sp-7) 0 var(--sp-6); }
  .home-hero h1 { font-size: 30px; }
  .hero-search input { padding-right: 76px; font-size: 15px; }
  .hero-search .btn span.t { display: none; }
  .section { padding: var(--sp-7) 0; }
  .article-toc-inline nav { grid-template-columns: 1fr; }
  .main-nav, .header-search { display: none; }
  .task-grid, .product-grid, .cat-grid, .rel-grid, .two-col, .three-col, .qv-grid, .verdict-grid, .spec-sections { grid-template-columns: 1fr; }
  .product-grid.cols-3 { grid-template-columns: minmax(0, 1fr); }
  .results-toolbar { align-items: stretch; flex-direction: column; }
  .results-toolbar select { width: 100%; min-width: 0; }
  .hub-hero { flex-direction: column-reverse; gap: var(--sp-4); }
  .hub-hero .hub-text { width: 100%; min-width: 0; }
  .hub-hero .hub-visual { width: 100%; height: 140px; font-size: 52px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { flex: 1; width: 100%; min-width: 0; }
  .compare-tray { left: 0; right: 0; bottom: 0; width: auto; border-radius: var(--r-lg) var(--r-lg) 0 0; }
  .btn-block-m { width: 100%; }
  .pm-primary-specs { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--sp-5); }
  .header-inner { padding: 0 12px; gap: 8px; }
  .header-actions { gap: 0; }
  .header-actions .icon-btn { min-width: 44px; }
  .header-actions > button { display: none; }
  .logo .site-logo { width: 104px; height: 38px; }
  .m-search, .m-tool, .m-learn, .m-db { display: inline-flex; }
  .mega-inner { grid-template-columns: 1fr 1fr; gap: 16px; padding: 20px 16px; }
  .ec-search-grid { grid-template-columns: 1fr; }
  .ec-search-grid .btn { width: 100%; }
  .search-page-head { padding-top: var(--sp-4); }
  .search-page-form { grid-template-columns: minmax(0, 1fr); }
  .search-page-form .btn { width: 100%; height: 48px; }
  .search-page-form .search-ic { top: 26px; }
  .sr-item { gap: var(--sp-3); }
  .sr-item .ic { width: 40px; height: 40px; }
  .ec-result dl { grid-template-columns: 1fr; gap: 4px; }
  .ec-result dd { margin-bottom: 8px; }
  .ec-brand-grid { grid-template-columns: 1fr; }
}
.mobile-filter-bar { display: none; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.mobile-filter-bar .btn { flex: 1; }
.dishwasher-tool-form { display: block !important; }

/* ============================================================
   SEO Content System v2.0 新增元件
   ============================================================ */

/* ---- Recommendation（Layer 5）---- */
.award-label {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-brand); color: #fff;
  font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 999px;
}
.award-label.alt { background: var(--color-brand-soft); color: var(--color-brand); }
.pick-card { display: grid; grid-template-columns: 220px 1fr; gap: var(--sp-5); padding: var(--sp-5); margin-bottom: var(--sp-4); position: relative; }
.pick-rank {
  position: absolute; top: -12px; left: -12px;
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--color-text-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 16px;
}
.pick-media .p-img { height: 170px; border-radius: var(--r-sm); background: var(--color-surface-subtle); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; color: var(--color-text-muted); font-size: 44px; }
.pick-media .p-img .cap { font-size: 11px; letter-spacing: 1px; }
.pick-head { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; margin-bottom: 6px; }
.pick-head h3 { margin: 0; font-size: 20px; }
.pick-body .why-box {
  background: var(--color-brand-soft); border-radius: var(--r-sm);
  padding: var(--sp-3) var(--sp-4); font-size: 14.5px; margin: var(--sp-3) 0;
}
.why-box b { color: var(--color-brand); }
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); margin: var(--sp-3) 0; }
.pros-cons ul { list-style: none; margin: 0; padding: 0; font-size: 14px; color: var(--color-text-secondary); }
.pros-cons li { padding: 3px 0 3px 22px; position: relative; }
.pros-cons .pros li::before { content: "✓"; position: absolute; left: 0; color: var(--color-success); font-weight: 700; }
.pros-cons .cons li::before { content: "✕"; position: absolute; left: 0; color: var(--color-danger); font-weight: 700; }
.tradeoff {
  background: var(--color-warning-soft); border-radius: var(--r-sm);
  padding: var(--sp-3) var(--sp-4); font-size: 14px; color: var(--color-text-secondary); margin: var(--sp-3) 0;
}
.tradeoff b { color: var(--color-warning); }
.pick-actions { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-top: var(--sp-3); }

/* ---- Relevant Reading / 關聯模組（§5.2，含 relation reason §3.5）---- */
.reading-list { display: flex; flex-direction: column; gap: var(--sp-2); }
.reading-list a.with-img { display: flex; gap: var(--sp-4); align-items: center; }
.rl-thumb {
  width: 96px; height: 72px; flex-shrink: 0;
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center; font-size: 26px; overflow: hidden; padding: 4px;
}
.rl-thumb img { width: 100%; height: 100%; object-fit: contain; }
.rl-body { min-width: 0; }
.rl-body .r-title, .rl-body .r-why { display: block; }
.reading-list a {
  display: block; background: #fff; border: 1px solid var(--color-border);
  border-radius: var(--r-md); padding: var(--sp-3) var(--sp-4); color: var(--color-text-primary);
}
.reading-list a:hover { border-color: var(--color-brand); }
.reading-list .r-title { font-weight: 600; font-size: 15px; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.reading-list .r-why { font-size: 13px; color: var(--color-text-muted); margin-top: 2px; }
.reading-list .r-why b { color: var(--color-brand); font-weight: 600; }

/* ---- 文章脈絡式內部連結 ---- */
.article-bridge {
  margin: var(--sp-4) 0 0;
  padding: var(--sp-3) var(--sp-4);
  border-left: 3px solid var(--color-brand);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: color-mix(in srgb, var(--color-brand) 7%, #fff);
  color: var(--color-text-secondary);
}
.article-bridge a {
  color: var(--color-brand);
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---- Living Information / Updates（Layer 8）---- */
.update-feed { position: relative; padding-left: var(--sp-5); border-left: 2px solid var(--color-border); display: flex; flex-direction: column; gap: var(--sp-5); }
.update-item { position: relative; }
.update-item::before {
  content: ""; position: absolute; left: calc(-1 * var(--sp-5) - 7px); top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-brand); border: 2px solid var(--color-bg);
}
.update-item.warn::before { background: var(--color-danger); }
.update-item .u-date { font-size: 13px; color: var(--color-text-muted); margin-bottom: 4px; }
.update-item h3 { font-size: 18px; margin-bottom: 6px; }
.update-item .u-desc { font-size: 15px; color: var(--color-text-secondary); margin-bottom: var(--sp-3); }
.affected { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; }
.affected .lbl { font-size: 12.5px; color: var(--color-text-muted); }
.affected .chip { font-size: 12.5px; padding: 4px 12px; }

/* ---- 學習中心 Content Hub ---- */
.layer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-4); }
.layer-card { display: flex; flex-direction: column; gap: 2px; padding: var(--sp-4) var(--sp-5); }
.layer-card .l-ic { font-size: 24px; margin-bottom: 6px; }
.layer-card h3 { font-size: 15.5px; margin: 0; }
.layer-card .l-count { font-size: 13px; color: var(--color-text-muted); }
.hub-section-label { font-size: 13px; letter-spacing: 1.5px; color: var(--color-text-muted); font-weight: 700; margin-bottom: var(--sp-3); display: flex; align-items: center; gap: 10px; }
.hub-section-label::after { content: ""; flex: 1; height: 1px; background: var(--color-border); }

@media (max-width: 1023px) {
  .layer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .pick-card { grid-template-columns: 1fr; gap: var(--sp-3); }
  .pros-cons { grid-template-columns: 1fr; }
  .layer-grid { grid-template-columns: 1fr 1fr; }
}

/* Shared filters and calculator controls */
.filter-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--sp-3);
  align-items: end;
  margin: var(--sp-4) 0;
}
.filter-bar label {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 600;
}
.filter-bar input,
.filter-bar select {
  width: 100%;
  min-width: 0;
}
@media (max-width: 767px) {
  .filter-bar { grid-template-columns: 1fr; }
}

/* ============================================================
   Article Figure（文章配圖模組 v1 — 純新增，不影響既有樣式）
   由 build-figures.py 插入的 <figure class="article-figure"> 使用
   ============================================================ */
.article-figure { margin: 22px 0 30px; }
.article-figure .fig-frame {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-md);
  padding: 14px 16px 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.article-figure .fig-frame svg {
  display: block;
  width: 100%;
  min-width: 560px;
  height: auto;
  font-family: var(--font-sans);
}
.article-figure.fig-fit .fig-frame svg { min-width: 0; }
.article-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}
.article-figure figcaption .fig-src { color: var(--color-text-muted); }
.article-figure .table-scroll { border: 1px solid var(--color-border); border-radius: var(--r-md); }
.article-figure .fig-table { border: 0; margin: 0; }
.article-figure .fig-table th, .article-figure .fig-table td { min-width: 120px; font-size: 14px; }
.article-figure .fig-table td.fig-td-hl { background: var(--color-brand-soft); }

/* ============================================================
   全站 RWD 與觸控操作補強
   ============================================================ */
main, section, article, aside, nav, header, footer,
.container, .card, .product-card, .tool-layout > *, .article-layout > *,
.explorer-layout > *, .pm-atf > *, .section-head > * { min-width: 0; }

img, picture, video, canvas, svg, iframe, object, embed { max-width: 100%; }
pre, code { max-width: 100%; }
pre { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.article-body, .product-main, .tool-main { overflow-wrap: anywhere; }
.compare-wrap, .table-scroll { max-width: 100%; overscroll-behavior-inline: contain; }
a, button, input, select, textarea, summary { touch-action: manipulation; }

@media (max-width: 767px) {
  html { scroll-padding-top: calc(var(--header-h) + 12px); }
  .container { width: 100%; padding-inline: 16px; }
  h2 { font-size: 24px; }
  h3 { font-size: 20px; }
  .section--tight { padding: 36px 0; }
  .section-head { align-items: stretch; flex-direction: column; gap: 10px; }
  .section-head .see-all { align-self: flex-start; min-height: 40px; display: inline-flex; align-items: center; }

  input:not([type="checkbox"]):not([type="radio"]),
  select, textarea { min-height: 44px; max-width: 100%; font-size: 16px; }
  button, .btn { min-height: 44px; }
  .chip, .search-filter { min-height: 40px; display: inline-flex; align-items: center; }
  .wizard-options button, .article-faq summary { min-height: 48px; }

  .header-inner { width: 100%; }
  .header-actions { flex: 1; justify-content: flex-end; }
  .header-actions .icon-btn { width: 44px; min-width: 44px; height: 52px; }
  .header-actions > button { display: none; }

  .toggle-row { flex-wrap: wrap; }
  .toggle-row .chip { min-width: calc(50% - 4px); }
  .inline-cta { align-items: stretch; padding: 16px; }
  .inline-cta .txt { min-width: 0; flex-basis: 100%; }
  .inline-cta .btn { width: 100%; }
  .mini-tool { padding: 18px 16px; }
  .mini-tool .row { align-items: stretch; flex-direction: column; }
  .mini-tool input[type="number"] { width: 100%; }

  .article-body table,
  table.spec-table { display: block; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; white-space: normal; }
  .article-body th, .article-body td,
  table.spec-table th, table.spec-table td { min-width: 128px; }
  .article-body figure { max-width: 100%; margin-inline: 0; }
  .article-body ul, .article-body ol { padding-left: 22px; }
  .article-body p, .article-body li { font-size: 16px; line-height: 1.8; }

  .pm-primary-specs { grid-template-columns: minmax(0, 1fr); }
  .results-toolbar .btn,
  .mobile-filter-bar .btn { min-height: 46px; }
  .footer-bottom .inner { flex-direction: column; }
}

@media (max-width: 420px) {
  .logo .site-logo { width: 96px; }
  .header-inner { padding-inline: 10px; gap: 4px; }
  .header-actions .icon-btn { width: 42px; min-width: 42px; }
  .layer-grid { grid-template-columns: minmax(0, 1fr); }
  .pm-primary-specs { grid-template-columns: minmax(0, 1fr); }
}