/* Desktop product pages: question bank and learning analytics.
   Same light palette as the approved teaching agent page; no shared-site overrides. */
.product-page {
  --pd-ink: #162b48;
  --pd-muted: #53647b;
  --pd-gold: #805922;
  --pd-line: #dde4ec;
  --pd-cream: #f8f3e9;
  --pd-blue: #edf3f9;
  --pd-green: #eef4f1;
}
.pd-main { color: var(--pd-ink); }
.pd-main h1, .pd-main h2, .pd-main h3 { font-family: var(--font-sans); font-weight: 700; letter-spacing: -.035em; color: var(--pd-ink); }
.pd-main p { line-height: 1.85; }
.pd-main svg { width: 24px; height: 24px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.pd-main .pd-symbols { position: absolute; width: 0; height: 0; overflow: hidden; }
.pd-wrap { max-width: 1240px; padding: 0 40px; margin: 0 auto; }
.pd-main a:focus-visible { outline: 3px solid #b8893e; outline-offset: 5px; }
.pd-main section[id] { scroll-margin-top: 100px; }
.pd-hero { padding: 30px 0 0; background: #fbf9f5; border-bottom: 1px solid #e8dcc5; }
.pd-breadcrumb { display: flex; gap: 13px; align-items: center; font-size: 12px; color: var(--pd-muted); }
.pd-breadcrumb a:hover { color: var(--pd-gold); }
.pd-hero-grid { display: grid; grid-template-columns: 1.06fr 1fr; align-items: center; gap: 54px; padding: 45px 0 48px; }
.pd-kicker { display: flex; align-items: center; gap: 10px; color: var(--pd-gold); font-size: 13px; font-weight: 500; margin-bottom: 20px; }
.pd-kicker::before { content: ''; width: 6px; height: 6px; background: var(--pd-gold); }
.pd-kicker span { font-size: 10px; letter-spacing: .12em; color: var(--pd-muted); padding-left: 10px; border-left: 1px solid #d7c9b2; }
.pd-hero h1 { font-size: clamp(42px, 3.7vw, 54px); line-height: 1.32; margin: 0 0 22px; }
.pd-title span, .pd-section h2 span { color: var(--pd-gold); }
.pd-description { font-size: 15px; color: var(--pd-muted); max-width: 475px; margin-bottom: 26px; }
.pd-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.pd-main .pd-button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 50px; padding: 12px 22px; border: 1px solid transparent; border-radius: 6px; font-size: 14px; font-weight: 600; line-height: 1.5; transition: background .2s, border-color .2s; }
.pd-main .pd-button svg { width: 19px; height: 19px; }
.pd-main .pd-button-primary { background: #8a6428; border-color: #8a6428; color: #fff; }
.pd-main .pd-button-primary:hover { background: #6f501e; border-color: #6f501e; }
.pd-main .pd-button-secondary { background: #fff; border-color: #c6b493; color: var(--pd-gold); }
.pd-main .pd-button-secondary:hover { background: var(--pd-cream); border-color: #a78750; }
.pd-hero-points { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 22px; color: var(--pd-muted); font-size: 12px; }
.pd-hero-points span { display: inline-flex; align-items: center; gap: 5px; }
.pd-hero-points svg { width: 15px; height: 15px; color: var(--pd-gold); }
.pd-diagram { position: relative; padding: 26px; background: #fff; border: 1px solid #e0d9cb; border-radius: 14px; box-shadow: 0 12px 36px #80592209; }
.pd-diagram::before, .pd-diagram::after { content: ''; position: absolute; width: 22px; height: 22px; border-style: solid; border-color: #b8893e; pointer-events: none; }
.pd-diagram::before { left: -1px; top: -1px; border-width: 2px 0 0 2px; border-radius: 14px 0 0; }
.pd-diagram::after { right: -1px; bottom: -1px; border-width: 0 2px 2px 0; border-radius: 0 0 14px; }
.pd-diagram-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 13px; margin-bottom: 24px; color: var(--pd-ink); }
.pd-diagram-header small { border: 1px solid var(--pd-line); padding: 3px 8px; border-radius: 4px; color: var(--pd-muted); font-size: 10px; white-space: nowrap; }
.pd-inputs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.pd-inputs > div { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 5px; font-size: 12px; border-radius: 5px; border: 1px solid; }
.pd-inputs svg { width: 18px; height: 18px; }
.pd-inputs > div:nth-child(3n+1), .pd-pills > span:nth-child(3n+1) { background: var(--pd-cream); border-color: #e8dcc5; color: #805922; }
.pd-inputs > div:nth-child(3n+2), .pd-pills > span:nth-child(3n+2) { background: var(--pd-blue); border-color: #d7e2ef; color: #315b85; }
.pd-inputs > div:nth-child(3n), .pd-pills > span:nth-child(3n) { background: var(--pd-green); border-color: #d7e4dc; color: #38634f; }
.pd-connector { height: 24px; width: 1px; background: #bdc9d6; margin: 0 auto; }
.pd-sheet { padding: 20px; border: 1px solid #d8c29f; border-radius: 8px; background: #fffcf7; }
.pd-sheet-head { display: flex; align-items: center; gap: 12px; padding-bottom: 16px; border-bottom: 1px solid #e8dcc5; }
.pd-sheet-head > svg { color: var(--pd-gold); width: 28px; height: 28px; }
.pd-sheet-head small { font-size: 9px; letter-spacing: .12em; color: var(--pd-gold); }
.pd-sheet-head h2 { font-size: 21px; margin-top: 4px; }
.pd-sheet-rows { display: grid; gap: 12px; margin-top: 18px; }
.pd-sheet-rows > div { display: flex; align-items: center; gap: 12px; }
.pd-sheet-rows svg { width: 17px; height: 17px; color: var(--pd-gold); }
.pd-sheet-rows strong { font-size: 12px; min-width: 52px; font-weight: 600; }
.pd-sheet-rows span { font-size: 11px; color: var(--pd-muted); }
.pd-mini-flow { display: flex; align-items: center; justify-content: space-between; gap: 7px; margin-top: 20px; }
.pd-mini-flow > span { display: grid; place-items: center; min-width: 43px; min-height: 34px; border: 1px solid var(--pd-line); border-radius: 4px; font-size: 11px; background: #f4f7fa; }
.pd-mini-flow > svg { width: 14px; height: 14px; color: var(--pd-muted); }
.pd-diagram figcaption { display: flex; align-items: center; justify-content: center; gap: 7px; margin-top: 20px; font-size: 11px; color: var(--pd-muted); }
.pd-diagram figcaption svg { width: 15px; height: 15px; }
.pd-profile { padding: 20px; border: 1px solid #b9d0c3; background: #f5faf7; border-radius: 8px; }
.pd-profile-head { display: flex; align-items: center; gap: 12px; }
.pd-profile-head > svg { width: 42px; height: 42px; padding: 9px; background: #e4efe9; color: #38634f; border: 1px solid #c3d7cb; border-radius: 10px; }
.pd-profile-head small { font-size: 9px; letter-spacing: .12em; color: #38634f; }
.pd-profile-head h2 { font-size: 21px; margin-top: 4px; }
.pd-dimensions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.pd-dimensions > div { display: flex; align-items: center; gap: 8px; border: 1px solid #d4e1d9; background: #fff; padding: 12px 10px; border-radius: 5px; font-size: 11px; }
.pd-dimensions svg { width: 17px; height: 17px; color: #38634f; }
.pd-pills { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.pd-pills > span { padding: 10px 4px; border: 1px solid; border-radius: 5px; font-size: 11px; text-align: center; }
.pd-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; border-top: 1px solid #e8dcc5; padding: 24px 0 28px; }
.pd-facts > div { display: flex; align-items: center; gap: 16px; padding: 18px 20px; border: 1px solid; border-radius: 7px; }
.pd-facts > div:nth-child(1) { background: var(--pd-cream); border-color: #e8dcc5; color: #805922; }
.pd-facts > div:nth-child(2) { background: var(--pd-blue); border-color: #d7e2ef; color: #315b85; }
.pd-facts > div:nth-child(3) { background: var(--pd-green); border-color: #d7e4dc; color: #38634f; }
.pd-facts strong { font-size: 24px; font-weight: 600; white-space: nowrap; }
.pd-facts span { font-size: 11px; color: var(--pd-muted); }
.pd-nav { background: #fff; border-bottom: 1px solid var(--pd-line); }
.pd-nav > .pd-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 70px; gap: 24px; }
.pd-nav .pd-wrap > span { font-size: 13px; font-weight: 600; }
.pd-nav .pd-wrap > div { display: flex; gap: 32px; }
.pd-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: 13px; color: var(--pd-muted); }
.pd-nav a:hover, .pd-nav a.pd-nav-contact { color: var(--pd-gold); }
.pd-section { padding: 80px 0; background: #fff; }
.pd-section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 34px; }
.pd-eyebrow { color: var(--pd-gold); font-size: 11px; letter-spacing: .12em; font-weight: 600; margin-bottom: 14px; }
.pd-section h2, .pd-closing h2 { font-size: 36px; line-height: 1.45; }
.pd-section-heading > p { max-width: 330px; color: var(--pd-muted); font-size: 14px; padding-bottom: 6px; }
.pd-cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.pd-card { display: flex; flex-direction: column; border: 1px solid; border-radius: 9px; padding: 26px; }
.pd-card:nth-child(3n+1) { --pd-accent: #805922; background: var(--pd-cream); border-color: #e8dcc5; }
.pd-card:nth-child(3n+2) { --pd-accent: #315b85; background: var(--pd-blue); border-color: #d7e2ef; }
.pd-card:nth-child(3n) { --pd-accent: #38634f; background: var(--pd-green); border-color: #d7e4dc; }
.pd-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.pd-icon { display: grid; place-items: center; width: 43px; height: 43px; background: #fff; color: var(--pd-accent); border: 1px solid var(--pd-line); border-radius: 9px; }
.pd-number { color: var(--pd-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.pd-card h3 { font-size: 20px; margin-bottom: 12px; }
.pd-card p { color: var(--pd-muted); font-size: 13px; flex: 1; margin-bottom: 22px; }
.pd-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.pd-tags li { font-size: 11px; color: var(--pd-accent); background: #fff; border-radius: 3px; padding: 3px 8px; }
/* 2026-10-10 按用户口径去掉首卡顶部的金色描边（只保留内边距；本文件仅question-bank/learning-analytics两页使用）。 */
.pd-card:first-child { padding-top: 24px; }
.pd-process { background: #f2f5f8; border-block: 1px solid var(--pd-line); }
.pd-steps { display: grid; grid-template-columns: repeat(var(--pd-step-count, 5), minmax(0, 1fr)); gap: 20px; list-style: none; margin: 40px 0 28px; padding: 0; }
.pd-steps li { position: relative; }
.pd-steps li > span { display: grid; place-items: center; width: 44px; height: 44px; background: #fff; border: 1px solid #c1ad8e; border-radius: 50%; color: var(--pd-gold); font-size: 13px; font-weight: 600; margin-bottom: 20px; }
.pd-steps li::after { content: ''; position: absolute; top: 22px; left: 60px; right: 0; height: 1px; background: #bdc9d6; }
.pd-steps li:last-child::after { display: none; }
.pd-steps li:last-child > span { background: #edc78a; color: var(--pd-ink); border-color: #edc78a; }
.pd-steps h3 { font-size: 17px; margin-bottom: 10px; }
.pd-steps p { color: var(--pd-muted); font-size: 13px; max-width: 170px; }
.pd-note { display: flex; align-items: center; gap: 12px; padding-top: 22px; border-top: 1px solid var(--pd-line); color: var(--pd-muted); font-size: 12px; }
.pd-note svg { color: var(--pd-gold); width: 20px; height: 20px; }
.pd-persona { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--pd-accent); border-radius: 4px; padding: 3px 8px; font-size: 11px; font-weight: 600; color: var(--pd-accent); }
.pd-scenario h3 { font-size: 21px; }
.pd-scenario dl { border-top: 1px solid #c5ced4; }
.pd-scenario dl > div { padding-top: 20px; }
.pd-scenario dt { font-size: 14px; color: var(--pd-accent); font-weight: 600; margin-bottom: 5px; }
.pd-scenario dd { margin: 0; font-size: 12px; line-height: 1.8; color: var(--pd-muted); }
.pd-extra { background: #f7faf8; border-block: 1px solid #dfe8e2; }
.pd-extra .pd-cards { grid-template-columns: repeat(var(--pd-extra-count, 3), minmax(0, 1fr)); }
.pd-extra .pd-card:first-child { border-top: 1px solid #e8dcc5; padding-top: 26px; }
.pd-extra .pd-card p { max-width: 440px; }
.pd-spec-layout { display: grid; grid-template-columns: .8fr 1.5fr; gap: 80px; align-items: start; }
.pd-spec-intro { font-size: 14px; color: var(--pd-muted); margin-top: 22px; }
.pd-assurance { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--pd-line); }
.pd-assurance li { display: flex; align-items: center; gap: 9px; font-size: 12px; color: var(--pd-muted); margin-bottom: 12px; }
.pd-assurance svg { width: 17px; height: 17px; color: var(--pd-gold); }
.pd-table { border: 1px solid var(--pd-line); border-radius: 9px; overflow: hidden; }
.pd-table table { width: 100%; border-collapse: collapse; text-align: left; font-size: 13px; }
.pd-table th, .pd-table td { padding: 17px 21px; border-bottom: 1px solid var(--pd-line); line-height: 1.85; }
.pd-table th { background: #f2f5f8; width: 110px; color: var(--pd-ink); font-weight: 600; vertical-align: top; white-space: nowrap; }
.pd-table td { background: #fff; color: var(--pd-muted); }
.pd-table tr:last-child > * { border-bottom: 0; }
.pd-closing { background: #f6eddd; border-top: 1px solid #e8dcc5; padding: 58px 0; }
.pd-closing > .pd-wrap { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.pd-closing h2 { margin-bottom: 16px; }
.pd-closing p:not(.pd-eyebrow) { color: var(--pd-muted); font-size: 13px; }
.pd-closing-action { display: flex; flex-direction: column; align-items: center; gap: 14px; flex-shrink: 0; }
.pd-closing-action > span { color: #6c5c43; font-size: 11px; }
.pd-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
@media (min-width: 981px) and (max-width: 1300px) {
  body.product-page header.nav .nav-inner { gap: 12px !important; }
  body.product-page header.nav .nav-menu { gap: 5px !important; }
  body.product-page header.nav .nav-link { padding-inline: 7px !important; }
  body.product-page header.nav .nav-search .s-field { width: 90px; }
}
@media (prefers-reduced-motion: reduce) {
  .pd-main *, .pd-main *::before, .pd-main *::after { scroll-behavior: auto; transition: none; animation: none; }
}