/* ============================================================
   Microsoft Defender 介紹網站 — 共用樣式（各產品分頁共用）
   色票與 SVG 圖解一致：藍 #0F6CBD／青 #0E7C86／深藍 #1E3A8A／橘 #C2410C／綠 #15803D
   ============================================================ */
:root {
  --blue: #0F6CBD;
  --teal: #0E7C86;
  --navy: #1E3A8A;
  --orange: #C2410C;
  --green: #15803D;
  --ink: #1E293B;
  --ink-soft: #475569;
  --bg: #F8FAFC;
  --paper: #ffffff;
  --line: #dbe3ee;
  --blue-tint: #e6f0fa;
  --teal-tint: #e2f3f4;
  --orange-tint: #fdeee6;
  --green-tint: #e5f4ea;
  --radius: 14px;
  --shadow: 0 14px 34px -22px rgba(30, 58, 138, .45);
  --maxw: 1120px;
  --font: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.8; font-size: 16.5px; }
img { max-width: 100%; height: auto; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.35; color: var(--navy); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 8px; top: 8px; background: #fff; padding: 8px 12px; z-index: 99; }

/* ---------- 頂部：產品分頁導覽（由 data/products.json 產生） ---------- */
.topbar { position: sticky; top: 0; z-index: 30; background: rgba(255, 255, 255, .94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; gap: 8px 22px; flex-wrap: wrap; padding: 10px 20px; max-width: var(--maxw); margin: 0 auto; }
.brand { font-weight: 800; color: var(--navy); text-decoration: none; font-size: 17px; }
.nav-products { display: flex; gap: 4px; flex-wrap: wrap; margin: 0; padding: 0; list-style: none; }
.nav-products a, .nav-products span { display: block; padding: 6px 13px; border-radius: 999px; font-size: 14.5px; font-weight: 700; text-decoration: none; color: var(--ink-soft); }
.nav-products a:hover { background: var(--blue-tint); color: var(--blue); }
.nav-products a[aria-current="page"] { background: var(--blue); color: #fff; }
.nav-products .soon { color: #94a3b8; font-weight: 500; cursor: default; }
.nav-products .soon small { font-size: 11px; margin-left: 4px; }

/* ---------- Hero ---------- */
.hero { padding: 54px 0 40px; background: radial-gradient(900px 420px at 90% -10%, var(--blue-tint), transparent 60%), radial-gradient(700px 360px at 0 0, var(--teal-tint), transparent 55%); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 34px; align-items: center; }
.eyebrow { color: var(--teal); font-weight: 800; letter-spacing: .08em; font-size: 14px; margin: 0 0 6px; }
.hero h1 { font-size: clamp(30px, 4.6vw, 46px); margin: 0 0 14px; color: var(--navy); }
.hero .sub { font-size: 19px; color: var(--ink-soft); margin: 0 0 18px; }
.hero .one-liner { background: var(--paper); border: 1px solid var(--line); border-left: 5px solid var(--blue); border-radius: var(--radius); padding: 14px 18px; margin: 0; }
.hero-art img { display: block; width: 100%; border-radius: 20px; box-shadow: var(--shadow); }

/* ---------- 版面：側邊區塊導覽 + 內容 ---------- */
.layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 36px; padding-top: 28px; padding-bottom: 20px; }
.toc { position: sticky; top: 76px; align-self: start; font-size: 14.5px; }
.toc summary { display: none; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.toc li a { display: block; padding: 5px 12px; color: var(--ink-soft); text-decoration: none; margin-left: -2px; border-left: 2px solid transparent; }
.toc li a:hover { color: var(--blue); }
.toc li a.active { color: var(--blue); border-left-color: var(--blue); font-weight: 700; }
.toc .group { padding: 10px 12px 2px; font-size: 12px; color: #64748b; font-weight: 700; letter-spacing: .06em; }

section.block { margin: 0 0 52px; }
section.block > h2 { font-size: clamp(23px, 3vw, 30px); margin: 0 0 14px; display: flex; gap: 12px; align-items: baseline; }
section.block > h2 .no { flex: none; font-size: 14px; background: var(--navy); color: #fff; border-radius: 8px; padding: 1px 9px; transform: translateY(-3px); }
section.block.aux > h2 .no { background: #64748b; }
h3 { font-size: 20px; margin: 26px 0 8px; }
.lead { font-size: 18px; }

.analogy { background: var(--teal-tint); border-radius: var(--radius); padding: 14px 18px; margin: 18px 0; }
.analogy::before { content: "白話比喻"; display: inline-block; font-size: 12.5px; font-weight: 800; color: #fff; background: var(--teal); border-radius: 6px; padding: 0 8px; margin-right: 8px; }
.note { background: var(--orange-tint); border-left: 5px solid var(--orange); border-radius: 10px; padding: 12px 16px; margin: 18px 0; }
.quote { border-left: 4px solid var(--blue); background: var(--blue-tint); padding: 10px 16px; border-radius: 0 10px 10px 0; margin: 18px 0; }
.price-note { font-weight: 700; color: var(--orange); }

figure { margin: 22px 0; }
figure img { display: block; width: 100%; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
figure.illus img { border: 0; box-shadow: var(--shadow); }
figcaption { font-size: 14.5px; color: var(--ink-soft); margin-top: 8px; }
.zoomable { cursor: zoom-in; }
dialog.lightbox { border: 0; padding: 0; background: transparent; max-width: 96vw; max-height: 96vh; }
dialog.lightbox::backdrop { background: rgba(15, 23, 42, .82); }
dialog.lightbox img { max-width: 96vw; max-height: 92vh; border-radius: 10px; background: #fff; display: block; }
dialog.lightbox button { position: absolute; top: 8px; right: 8px; font: inherit; font-size: 18px; border: 0; border-radius: 999px; width: 38px; height: 38px; cursor: pointer; }

/* ---------- 功能卡片（區塊 4） ---------- */
.cards { display: grid; gap: 22px; }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow); }
.card h3 { margin-top: 0; }
.card .tag { display: inline-block; background: var(--blue); color: #fff; font-weight: 800; font-size: 13px; border-radius: 8px; padding: 0 9px; margin-right: 8px; }

/* ---------- 方案卡片（區塊 5） ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 22px 0; }
.plan { background: var(--paper); border: 1px solid var(--line); border-top: 6px solid var(--blue); border-radius: var(--radius); padding: 18px 20px; }
.plan:nth-child(2) { border-top-color: var(--teal); }
.plan:nth-child(3) { border-top-color: var(--orange); }
.plan h3 { margin: 0 0 2px; font-size: 18.5px; }
.plan .family { color: var(--ink-soft); font-size: 14px; margin: 0 0 12px; }
.plan dl { margin: 0; font-size: 15px; }
.plan dt { font-weight: 700; color: var(--navy); margin-top: 9px; font-size: 13.5px; }
.plan dd { margin: 0; }
.plan .best { margin-top: 12px; background: var(--bg); border-radius: 10px; padding: 8px 12px; font-size: 14.5px; }
.badge { display: inline-block; border-radius: 6px; padding: 0 8px; font-size: 13px; font-weight: 700; }
.badge.yes { background: var(--green-tint); color: var(--green); }
.badge.arc { background: var(--blue-tint); color: var(--blue); }
.badge.no { background: #eceff3; color: #475569; }
.badge.warn { background: var(--orange-tint); color: var(--orange); }
@media (max-width: 900px) { .plans { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: 82%; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 10px; } .plan { scroll-snap-align: start; } }

/* ---------- 表格 ---------- */
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); margin: 18px 0; }
table { border-collapse: collapse; width: 100%; font-size: 15px; min-width: 560px; }
th, td { padding: 10px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
thead th { background: var(--navy); color: #fff; font-weight: 700; position: sticky; top: 0; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: #f6f9fc; }
tbody th { font-weight: 700; color: var(--navy); background: transparent; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cols-2 > div { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 20px 12px; }
.cols-2 h3 { font-size: 17px; }
.cols-2 ul { margin: 0; padding-left: 20px; }

.filter { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 14px 0 0; padding: 0; border: 0; }
.filter legend { float: left; font-weight: 700; margin-right: 6px; padding: 0; }
.filter label { cursor: pointer; }
.filter input { position: absolute; opacity: 0; }
.filter span { display: inline-block; border: 1px solid var(--line); background: var(--paper); border-radius: 999px; padding: 4px 16px; font-size: 15px; font-weight: 700; color: var(--ink-soft); }
.filter input:checked + span { background: var(--blue); border-color: var(--blue); color: #fff; }
.filter input:focus-visible + span { outline: 3px solid var(--teal); outline-offset: 2px; }
.filter-count { font-size: 14px; color: var(--ink-soft); margin: 8px 0 0; }

/* ---------- 小問答（區塊 9） ---------- */
.quiz { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; margin: 22px 0; box-shadow: var(--shadow); }
.quiz h3 { margin: 0 0 6px; }
.quiz .q { margin: 14px 0 0; padding: 0; border: 0; }
.quiz .q legend { font-weight: 700; padding: 0; margin-bottom: 6px; }
.quiz .q label { display: block; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; margin: 6px 0; cursor: pointer; }
.quiz .q label:has(input:checked) { border-color: var(--blue); background: var(--blue-tint); }
.quiz .q[hidden] { display: none; }
.quiz .result { margin-top: 16px; border-radius: 12px; padding: 14px 18px; background: var(--green-tint); border-left: 5px solid var(--green); }
.quiz .result strong { color: var(--green); }
.quiz .result[hidden] { display: none; }
.quiz button.reset { font: inherit; margin-top: 10px; background: none; border: 1px solid var(--line); border-radius: 999px; padding: 3px 14px; cursor: pointer; }
ol.steps { padding-left: 22px; } ol.steps li { margin: 6px 0; }

/* ---------- FAQ / 名詞 ---------- */
details.faq { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; margin: 10px 0; }
details.faq summary { cursor: pointer; padding: 13px 18px; font-weight: 700; list-style: none; display: flex; gap: 10px; }
details.faq summary::before { content: "＋"; color: var(--blue); flex: none; }
details.faq[open] summary::before { content: "－"; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq p { margin: 0; padding: 0 18px 14px 46px; }
.glossary { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.term { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
.term b { color: var(--navy); font-size: 17px; }
.term small { display: block; color: var(--teal); font-weight: 700; }
.term p { margin: 4px 0 0; font-size: 15px; }
abbr[data-tip] { text-decoration: underline dashed var(--teal); text-decoration-thickness: 2px; text-underline-offset: 5px; color: var(--teal); font-weight: 700; cursor: help; position: relative; }
abbr[data-tip].right:hover::after, abbr[data-tip].right:focus::after { left: auto; right: 0; }
abbr[data-tip]:hover::after, abbr[data-tip]:focus::after { content: attr(data-tip); position: absolute; left: 0; top: 100%; z-index: 20; width: max-content; max-width: 280px; background: var(--ink); color: #fff; font-size: 13.5px; line-height: 1.55; padding: 8px 12px; border-radius: 8px; box-shadow: 0 8px 20px rgba(0, 0, 0, .25); font-weight: 400; }
.links { padding-left: 20px; } .links li { margin: 6px 0; }

/* ---------- 首頁：產品卡片 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 1fr; gap: 20px; padding: 8px 0 60px; }
@media (max-width: 900px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .product-grid { grid-template-columns: 1fr; } }
.product { display: flex; flex-direction: column; min-height: 190px; background: var(--paper); border: 1px solid var(--line); border-top: 6px solid var(--blue); border-radius: var(--radius); padding: 20px 22px; text-decoration: none; color: inherit; box-shadow: var(--shadow); }
.product h2 { margin: 0 0 6px; font-size: 21px; }
.product p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
a.product:hover { transform: translateY(-3px); transition: transform .15s; }
.product.soon { border-top-color: #cbd5e1; opacity: .75; }
.product .cta { margin-top: auto; padding-top: 12px; font-weight: 700; color: var(--blue); }
.product.soon .cta { color: #94a3b8; }

/* ---------- 頁尾署名列（每一頁共用，由 site.js 加入） ---------- */
.credit-bar { background: #0b2f6b; padding: 34px 0 28px; text-align: center; }
.credit-icons { display: flex; justify-content: center; align-items: center; gap: 16px; margin: 0 0 18px; }
.credit-icons a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 999px; background: rgba(255, 255, 255, .08); color: #a9bde0; transition: background .18s, color .18s; }
.credit-icons a:hover { background: rgba(255, 255, 255, .18); color: #fff; }
.credit-icons svg { width: 18px; height: 18px; fill: currentColor; }
.credit-copy { margin: 0; font-size: 13px; color: #93a8d1; }
.credit-by { margin: 6px 0 0; font-size: 13px; font-weight: 700; color: rgba(255, 255, 255, .85); }

footer.site { margin-top: 0; border-top: 1px solid var(--line); background: var(--paper); padding: 22px 0 40px; font-size: 14.5px; color: var(--ink-soft); }

/* ---------- 手機版 ---------- */
@media (max-width: 900px) {
  .hero-grid, .cols-2 { grid-template-columns: 1fr; }
  .layout { grid-template-columns: 1fr; gap: 0; }
  .toc { position: sticky; top: 52px; z-index: 20; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 18px; }
  .toc summary { display: block; cursor: pointer; padding: 10px 16px; font-weight: 700; color: var(--navy); }
  .toc ol { border: 0; max-height: 55vh; overflow: auto; padding-bottom: 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } a.product:hover { transform: none; } }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }