/* =========================================================================
   国脉智能 · Level-2 / 内页组件层
   依赖 styles.css 的 design tokens。Built by UI Designer.
   ========================================================================= */

/* ----------------------------- Breadcrumb ------------------------------ */
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; font-size: var(--fs-xs); color: var(--gray-500); margin-bottom: 1.3rem; }
.breadcrumb a { color: var(--gray-500); transition: color var(--dur-fast) ease; }
.breadcrumb a:hover { color: var(--orange-text); }
.breadcrumb [aria-current="page"] { color: var(--ink-800); font-weight: 600; }
.breadcrumb .sep { color: var(--gray-300); }

/* ----------------------------- Page hero ------------------------------- */
.page-hero { position: relative; overflow: hidden; padding-block: clamp(2.4rem, 1.6rem + 3vw, 4.2rem); border-bottom: 1px solid var(--line); background: var(--surface-2); }
.page-hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.page-hero__bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 80% at 85% 0%, #000, transparent 72%);
          mask-image: radial-gradient(120% 80% at 85% 0%, #000, transparent 72%);
  opacity: 0.6;
}
.page-hero__bg::after { content: ""; position: absolute; top: -30%; right: -5%; width: 50%; height: 160%; background: radial-gradient(closest-side, rgb(255 125 0 / 0.12), transparent 70%); }
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: var(--fs-2xl); margin-top: 0.8rem; max-width: 20ch; }
.page-hero .lead { margin-top: 0.9rem; }

/* --------------------------- Product detail ---------------------------- */
.pd { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(1.5rem, 1rem + 3vw, 3.5rem); align-items: start; }
.pd__media { position: sticky; top: calc(var(--header-h) + 1.5rem); }
.gallery { border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; background: linear-gradient(150deg, var(--surface-2), var(--surface-3)); }
.gallery__main { aspect-ratio: 4/3; display: grid; place-items: center; padding: 2rem; overflow: hidden;}
.gallery__main svg { width: 72%; }
.gallery__thumbs { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.gallery__thumbs button { aspect-ratio: 1; display: grid; place-items: center; border-right: 1px solid var(--line); background: var(--surface); transition: background-color var(--dur-fast) ease; }
.gallery__thumbs button:last-child { border-right: none; }
.gallery__thumbs button.is-active, .gallery__thumbs button:hover { background: var(--orange-50); }
.gallery__thumbs svg { width: 52%; opacity: 0.65; transition: opacity var(--dur-fast) ease; }
.gallery__thumbs button.is-active svg, .gallery__thumbs button:hover svg { opacity: 1; }

.pd__cat { font-family: var(--font-display); letter-spacing: 0.16em; text-transform: uppercase; font-size: var(--fs-eyebrow); color: var(--blue-700); font-weight: 600; }
.pd__title { font-size: var(--fs-xl); margin: 0.5rem 0 0.8rem; }
.pd__lead { color: var(--ink-600); margin-bottom: 1.4rem; }
.pd__meta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 1.6rem; }
.chip2 { font-size: var(--fs-xs); font-weight: 600; padding: 0.4rem 0.85rem; border-radius: var(--r-pill); background: var(--surface-2); border: 1px solid var(--line); color: var(--ink-700); }
.chip2--o { background: var(--orange-50); border-color: var(--orange-200); color: var(--orange-700); }
.pd__actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.8rem; }

/* Tabs */
.tabs { margin-top: 0.4rem; }
.tablist { display: flex; flex-wrap: wrap; gap: 0.3rem; border-bottom: 1px solid var(--line); margin-bottom: 1.5rem; }
.tab { padding: 0.7rem 1.05rem; font-family: var(--font-display); font-weight: 600; font-size: var(--fs-sm); color: var(--gray-500); border-bottom: 2px solid transparent; margin-bottom: -1px; transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease; }
.tab[aria-selected="true"] { color: var(--ink-900); border-bottom-color: var(--orange-500); }
.tab:hover { color: var(--ink-800); }
.tabpanel { animation: tabfade 300ms var(--ease-out-expo); }
.tabpanel[hidden] { display: none; }
@keyframes tabfade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* Spec table */
.spec-table { width: 100%; border-collapse: collapse; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.spec-table caption { text-align: left; font-family: var(--font-display); font-weight: 600; color: var(--ink-900); padding: 0.2rem 0 1rem; font-size: var(--fs-md); }
.spec-table tr + tr { border-top: 1px solid var(--line); }
.spec-table th, .spec-table td { text-align: left; padding: 0.95rem 1.1rem; font-size: var(--fs-sm); vertical-align: top; }
.spec-table th { width: 38%; color: var(--ink-800); font-weight: 600; background: var(--surface-2); }
.spec-table td { color: var(--ink-600); }
.spec-table td b { color: var(--ink-900); }

/* Feature list */
.feat-list { display: grid; gap: 0.85rem; }
.feat-list li { display: flex; gap: 0.7rem; align-items: flex-start; font-size: var(--fs-sm); color: var(--ink-600); }
.feat-list svg { flex: none; margin-top: 0.2rem; color: var(--orange-600); }

/* App tags */
.app-tags { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.4rem; }

/* Related */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.minicard { border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; background: var(--surface); transition: transform var(--dur-mid) var(--ease-out-quart), box-shadow var(--dur-mid) ease; display: flex; flex-direction: column; }
.minicard:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.minicard__media { aspect-ratio: 16/9; background: linear-gradient(150deg, var(--surface-2), var(--surface-3)); display: grid; place-items: center; border-bottom: 1px solid var(--line); }
.minicard__media svg { width: 48%; }
.minicard__body { padding: 1rem 1.1rem 1.2rem; }
.minicard__body span { font-size: var(--fs-xs); color: var(--blue-700); font-family: var(--font-display); font-weight: 600; letter-spacing: 0.04em; }
.minicard__body h4 { font-size: var(--fs-sm); color: var(--ink-900); margin-top: 0.25rem; }

/* ----------------------------- Timeline -------------------------------- */
.timeline { position: relative; margin-left: 0.6rem; padding-left: 1.8rem; border-left: 2px solid var(--line); }
.timeline__item { position: relative; padding-bottom: 2rem; }
.timeline__item::before { content: ""; position: absolute; left: -2.35rem; top: 0.35rem; width: 14px; height: 14px; border-radius: 50%; background: var(--orange-500); box-shadow: 0 0 0 4px var(--orange-50); }
.timeline__year { font-family: var(--font-display); font-weight: 700; color: var(--orange-700); font-size: var(--fs-md); }
.timeline__item h4 { color: var(--ink-900); margin: 0.25rem 0 0.4rem; }
.timeline__item p { color: var(--ink-600); font-size: var(--fs-sm); }

/* ----------------------------- Article --------------------------------- */
.article { max-width: 72ch; margin-inline: auto; }
.article h2 { font-size: var(--fs-lg); margin: 1.6rem 0 0.7rem; }
.article p { color: var(--ink-600); margin-bottom: 1rem; }
.article blockquote { border-left: 3px solid var(--orange-500); padding: 0.4rem 0 0.4rem 1.2rem; color: var(--ink-800); font-weight: 500; margin: 1.2rem 0; }
.article__cover { aspect-ratio: 16/7; border-radius: var(--r-lg); background: linear-gradient(135deg, var(--blue-700), var(--ink-900)); display: grid; place-items: center; color: #fff; margin: 1.5rem 0; }
.article__cover svg { width: 46px; height: 46px; opacity: 0.8; }
.article__meta { display: flex; flex-wrap: wrap; gap: 1rem; color: var(--gray-500); font-size: var(--fs-xs); font-family: var(--font-display); font-weight: 600; letter-spacing: 0.04em; }

/* ----------------------------- Filter bar ------------------------------ */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; }
.filter-bar button { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-sm); padding: 0.55rem 1.1rem; border-radius: var(--r-pill); border: 1px solid var(--line); color: var(--ink-700); background: var(--surface); transition: all var(--dur-fast) ease; }
.filter-bar button.is-active, .filter-bar button:hover { border-color: var(--orange-500); color: var(--orange-text); background: var(--orange-50); }

/* ----------------------------- Doc list -------------------------------- */
.doc-grid { display: grid; gap: 1.2rem; }
.doc-row { display: grid; grid-template-columns: 110px 1fr auto; gap: 1.5rem; align-items: center; padding: 1.3rem 1.6rem; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); transition: transform var(--dur-mid) var(--ease-out-quart), box-shadow var(--dur-mid) ease, border-color var(--dur-mid) ease; }
.doc-row:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }
.doc-row__icon { width: 84px; height: 84px; border-radius: var(--r-md); display: grid; place-items: center; background: linear-gradient(150deg, var(--surface-2), var(--surface-3)); color: var(--blue-600); }
.doc-row__icon svg { width: 38px; height: 38px; }
.doc-row h3 { color: var(--ink-900); font-size: var(--fs-md); }
.doc-row p { color: var(--gray-500); font-size: var(--fs-sm); margin-top: 0.3rem; }
.doc-row__cta { color: var(--orange-text); font-family: var(--font-display); font-weight: 600; font-size: var(--fs-sm); white-space: nowrap; }

/* section subhead inside inner pages */
.subhead { margin: 3rem 0 1.4rem; }

/* ----------------------------- Responsive ------------------------------ */
@media (max-width: 860px) {
  .pd { grid-template-columns: 1fr; }
  .pd__media { position: static; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .doc-row { grid-template-columns: 64px 1fr; }
  .doc-row__cta { display: none; }
}
@media (max-width: 560px) {
  .related-grid { grid-template-columns: 1fr; }
  .doc-row { grid-template-columns: 1fr; }
  .doc-row__icon { display: none; }
}