/* 北辰 Lodestar 站点样式。
   sigil.css 提供组件（link-button）与明暗中性层；这里只管站点版式。
   颜色走自己的 token，暗色由 <html data-theme="dark"> 切换（与 sigil 同一个属性）。 */

:root {
  --night: #0b1530;
  --night-2: #13224a;
  --gold: #e8b64c;
  --gold-ink: #8a5a00;

  --bg: #faf8f3;
  --bg-alt: #f2eee4;
  --surface: #ffffff;
  --text: #1c2233;
  --text-2: #4a5268;
  --muted: #6b7286;
  --line: #e2dccd;
  --accent: #1f4fa8;
  --shadow: 0 1px 2px rgb(20 26 45 / .06), 0 8px 24px rgb(20 26 45 / .08);

  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1120px;
  --gutter: 24px;
  --radius: 14px;

  /* sigil link-button 的主色跟站点走 */
  --sigil-color-primary: var(--night);
  --sigil-color-primary-dark: var(--night-2);
  --sigil-color-primary-contrast: #fff;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0d1220;
  --bg-alt: #121a2e;
  --surface: #172038;
  --text: #e8eaf2;
  --text-2: #b7bdd0;
  --muted: #8c93a8;
  --line: #26304a;
  --accent: #8fb3ff;
  --gold-ink: var(--gold);
  --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .35);

  --sigil-color-primary: var(--gold);
  --sigil-color-primary-dark: #f2c76a;
  --sigil-color-primary-contrast: var(--night);

  color-scheme: dark;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.3; margin: 0 0 .5em; font-weight: 700; letter-spacing: .01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
code { font-family: var(--mono); font-size: .88em; background: var(--bg-alt); padding: .1em .4em; border-radius: 5px; }
.muted { color: var(--muted); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.wrap.narrow { max-width: 760px; }
.center { text-align: center; }
.center .actions { justify-content: center; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--surface); padding: 8px 14px; border-radius: 8px; }
.skip-link:focus { left: 8px; }

/* ---- 页头 ---------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; margin: 0; }
.brand-logo { width: 28px; height: 28px; flex: none; }
.logo-bubble { fill: var(--night); }
.logo-spark { fill: var(--gold); }
:root[data-theme="dark"] .logo-bubble { fill: var(--gold); }
:root[data-theme="dark"] .logo-spark { fill: var(--night); }
.brand-name { font-weight: 800; font-size: 1.3rem; letter-spacing: -.01em; }
.brand-sub { font-size: .8rem; color: var(--muted); padding-left: 8px; border-left: 1px solid var(--line); line-height: 1.1; }
.site-nav { margin-left: auto; }
.site-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a { display: block; padding: 6px 12px; border-radius: 8px; color: var(--text-2); text-decoration: none; font-size: .95rem; }
.site-nav a:hover { background: var(--bg-alt); color: var(--text); }
.site-nav a[aria-current="page"] { color: var(--text); font-weight: 600; background: var(--bg-alt); }
.theme-toggle {
  width: 36px; height: 36px; display: grid; place-items: center; cursor: pointer;
  border: 1px solid var(--line); border-radius: 10px; background: transparent; color: var(--text-2);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle:hover { color: var(--text); background: var(--bg-alt); }

/* ---- 通用区块 ------------------------------------------------------------ */
.section { padding: clamp(56px, 8vw, 104px) 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: clamp(28px, 4vw, 48px); }
.center .section-head, .section-head.center { margin-inline: auto; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 6px; margin: 0 0 .6em;
  font-size: .8rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--gold-ink);
}
.section-lead { color: var(--text-2); font-size: 1.08rem; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.sigil-btn.cta { padding: 12px 22px; font-size: 1rem; border-radius: 999px; text-decoration: none; font-weight: 600; line-height: 1.2; height: auto; }
/* sigil.css 在 @layer 里，站点的无层 `a { color }` 会盖过它 —— 按钮颜色在这里显式给 */
.sigil-btn-primary.cta { background: var(--sigil-color-primary); border-color: var(--sigil-color-primary); color: var(--sigil-color-primary-contrast); }
.sigil-btn-primary.cta:hover { background: var(--sigil-color-primary-dark); border-color: var(--sigil-color-primary-dark); }
.sigil-btn-outlined.cta { background: transparent; border: 1px solid var(--line); color: var(--text); }
.sigil-btn-outlined.cta:hover { border-color: var(--text-2); background: var(--bg-alt); }

/* ---- 首页 hero：永远是夜空 ------------------------------------------------ */
.hero { position: relative; overflow: hidden; }
.hero-night {
  background: radial-gradient(ellipse at 70% -10%, #2a3f7a 0%, var(--night-2) 38%, var(--night) 75%);
  color: #eef1fa;
  padding: clamp(80px, 12vw, 150px) 0 clamp(72px, 10vw, 128px);
}
.hero-night .sky {
  position: absolute; inset: 0; pointer-events: none; opacity: .9;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 27% 68%, #cfd8ff 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 41% 14%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 82%, #fff 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 66% 38%, #ffe7b0 50%, transparent 51%),
    radial-gradient(1px 1px at 74% 74%, #cfd8ff 50%, transparent 51%),
    radial-gradient(1.3px 1.3px at 88% 28%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 93% 60%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 86%, #cfd8ff 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 33% 44%, #fff 50%, transparent 51%);
}
.hero-night .sky::after {
  /* 北辰：右上那颗最亮的 */
  content: ""; position: absolute; right: 14%; top: 18%; width: 120px; height: 120px;
  background:
    radial-gradient(circle, rgb(232 182 76 / .55) 0, rgb(232 182 76 / 0) 60%),
    conic-gradient(from 0deg, transparent 0 22%, rgb(255 236 190 / .9) 25%, transparent 28% 47%, rgb(255 236 190 / .9) 50%, transparent 53% 72%, rgb(255 236 190 / .9) 75%, transparent 78% 97%, rgb(255 236 190 / .9) 100%);
  -webkit-mask: radial-gradient(circle, #000 0 18%, rgb(0 0 0 / .5) 30%, transparent 62%);
          mask: radial-gradient(circle, #000 0 18%, rgb(0 0 0 / .5) 30%, transparent 62%);
}
.hero-inner { position: relative; max-width: 860px; margin-left: max(var(--gutter), calc((100% - var(--wrap)) / 2 + var(--gutter))); padding: 0 var(--gutter) 0 0; }
.hero-night .eyebrow { color: var(--gold); }
.hero-night h1 { color: #fff; }
.hero-lead { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--text-2); max-width: 680px; }
.hero-night .hero-lead { color: #c4cbe0; }
.hero-night .hero-lead strong { color: #fff; }
.hero-night .sigil-btn-primary.cta { background: var(--gold); border-color: var(--gold); color: var(--night); }
.hero-night .sigil-btn-primary.cta:hover { background: #f2c76a; }
.hero-night .sigil-btn-outlined.cta { color: #eef1fa; border-color: rgb(255 255 255 / .4); background: transparent; }
.hero-night .sigil-btn-outlined.cta:hover { border-color: #fff; background: rgb(255 255 255 / .06); }

/* ---- 产品卡 -------------------------------------------------------------- */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 28px; }
.product-card {
  display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-card:hover { transform: translateY(-3px); }
.product-card-shot { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.product-card-shot img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.product-card-body { padding: 24px 28px 28px; }
.product-card h3 { font-size: 1.6rem; margin-bottom: .2em; }
.product-card h3 a { color: var(--text); text-decoration: none; }
.product-card-tagline { color: var(--gold-ink); font-weight: 600; }
.product-card .more { font-weight: 600; text-decoration: none; }
.product-card-term {
  display: flex; flex-direction: column; aspect-ratio: 16 / 10; overflow: hidden; text-decoration: none;
  background: #0f1830; color: #e3e8f7; border-bottom: 1px solid var(--line);
}
.term-label { font-size: .8rem; color: #9aa4c4; padding: 10px 18px; border-bottom: 1px solid #22305a; background: #0b1328; }
.product-card-term pre { margin: 0; padding: 14px 18px; font-family: var(--mono); font-size: .8rem; line-height: 1.65; white-space: pre; overflow: hidden;
  -webkit-mask: linear-gradient(#000 70%, transparent); mask: linear-gradient(#000 70%, transparent); }

/* ---- 我们做什么 ---------------------------------------------------------- */
.pillar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 24px; }
.pillar { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 30px; box-shadow: var(--shadow); }
.pillar h3 { font-size: 1.45rem; }
.pillar h3 a { color: var(--text); text-decoration: none; }
.pillar p { color: var(--text-2); }
.pillar ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.pillar li { font-size: .88rem; padding: 4px 12px; border-radius: 999px; background: var(--bg-alt); color: var(--text-2); }

/* ---- 代码示例 ------------------------------------------------------------ */
.code { margin: 0; min-width: 0; border-radius: 12px; overflow: hidden; background: #0f1830; border: 1px solid #22305a; box-shadow: 0 24px 60px rgb(20 26 45 / .18); }
.code figcaption { font-size: .82rem; color: #9aa4c4; padding: 10px 16px; border-bottom: 1px solid #22305a; background: #0b1328; }
.code pre { margin: 0; padding: 18px 20px; overflow-x: auto; }
.code code { background: none; padding: 0; color: #e3e8f7; font-size: .84rem; line-height: 1.7; white-space: pre; }
.spec tbody th { width: 9em; }

/* ---- 原则 ---------------------------------------------------------------- */
.principle-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 20px; }
.principle { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.principle p { color: var(--text-2); font-size: .96rem; margin: 0; }
.icon { width: 30px; height: 30px; color: var(--gold-ink); margin-bottom: 12px; }

/* ---- 名字由来 ------------------------------------------------------------ */
.quote-band { background: var(--night); color: #dfe4f3; text-align: center; }
.quote-band .eyebrow { color: var(--gold); }
.quote-band .quote { font-family: var(--serif); font-size: clamp(1.6rem, 3.4vw, 2.4rem); color: #fff; letter-spacing: .04em; margin-bottom: .6em; }
.quote-note { max-width: 640px; margin: 0 auto; color: #aeb6cf; }

/* ---- 技术栈 -------------------------------------------------------------- */

/* ---- FAQ ----------------------------------------------------------------- */
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-weight: 600; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 1.4rem; color: var(--muted); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--text-2); padding-bottom: 12px; }

.cta-band { text-align: center; }
.cta-band .actions { justify-content: center; }
.cta-band .section-lead { max-width: 620px; margin-inline: auto; }

/* ---- 产品页 -------------------------------------------------------------- */
.product-hero { padding: clamp(32px, 5vw, 56px) 0 clamp(56px, 8vw, 96px); border-bottom: 1px solid var(--line); }
.product-hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.product-hero h1 { display: flex; flex-direction: column; gap: 6px; }
.h1-sub { font-size: clamp(1.05rem, 1.8vw, 1.35rem); color: var(--gold-ink); font-weight: 600; letter-spacing: .02em; }
.origin { font-family: var(--serif); color: var(--muted); border-left: 3px solid var(--gold); padding-left: 12px; }

.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 0 0 28px; font-size: .88rem; color: var(--muted); }
.breadcrumb li + li::before { content: "/"; margin-right: 6px; opacity: .6; }
.breadcrumb a { color: var(--muted); }

.shot { margin: 0; }
.shot img { border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--surface); }
.shot figcaption { font-size: .85rem; color: var(--muted); margin-top: 10px; }
.shot-hero img { box-shadow: 0 2px 4px rgb(20 26 45 / .08), 0 24px 60px rgb(20 26 45 / .18); }

.feature { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(24px, 4vw, 56px); align-items: center; padding: clamp(28px, 4vw, 44px) 0; }
.feature + .feature { border-top: 1px solid var(--line); }
.feature:nth-of-type(even) { grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); }
.feature:nth-of-type(even) .feature-text { order: 2; }
.feature-text h3 { font-size: 1.5rem; }
.feature-text p { color: var(--text-2); }

.cap-grid { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 20px; }
.cap-grid li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.cap-grid h3 { font-size: 1.08rem; }
.cap-grid p { color: var(--text-2); font-size: .95rem; margin: 0; }
.cap-grid-lg h3 { font-size: 1.2rem; }
.cap-grid-lg li { padding: 26px 28px; }
.cap-grid-lg p { font-size: 1rem; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.data-table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.data-table th, .data-table td { text-align: left; vertical-align: top; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.data-table tr:last-child > * { border-bottom: 0; }
.data-table thead th { background: var(--bg-alt); font-weight: 600; white-space: nowrap; }
.data-table tbody th { white-space: nowrap; font-weight: 600; }
.compare td:last-child { font-weight: 500; }
.compare thead th:last-child { color: var(--gold-ink); }

/* ---- 关于 ---------------------------------------------------------------- */
.about h3 { font-size: 1.15rem; margin-top: 1.2em; }
.about cite { font-style: normal; }
.about h2 { margin-top: 1.6em; font-size: 1.5rem; }
.about-products { padding-left: 1.2em; }
.about-products li { margin-bottom: .6em; }

/* ---- 页脚 ---------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding: 48px 0 24px; font-size: .92rem; }
.footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr; gap: 28px; }
.footer-brand .brand { margin-bottom: 8px; }
.footer-nav h2 { font-family: var(--sans); font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.footer-nav ul { list-style: none; padding: 0; margin: 0; }
.footer-nav li { margin-bottom: 6px; }
.footer-nav a { color: var(--text-2); text-decoration: none; }
.footer-nav a:hover { color: var(--text); text-decoration: underline; }
.footer-legal { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.footer-legal p { margin: 0; }

/* ---- 窄屏 ---------------------------------------------------------------- */
@media (max-width: 860px) {
  .product-hero-grid, .feature, .feature:nth-of-type(even) { grid-template-columns: 1fr; }
  .feature:nth-of-type(even) .feature-text { order: 0; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .header-inner { gap: 8px 12px; padding-block: 8px; }
  .site-nav { order: 3; width: 100%; margin-left: 0; }
  .site-nav ul { justify-content: space-between; }
  .site-nav a { padding: 6px 10px; }
  .theme-toggle { margin-left: auto; }
  .hero-night .sky::after { right: 4%; top: 6%; width: 80px; height: 80px; }
  /* 表格在窄屏改成一行一张卡：表头隐藏，每格占满一行 */
  .data-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .data-table, .data-table tbody, .data-table tr, .data-table th, .data-table td { display: block; }
  .data-table tr { padding: 12px 16px; border-bottom: 1px solid var(--line); }
  .data-table tr:last-child { border-bottom: 0; }
  .data-table th, .data-table td { padding: 2px 0; border: 0; white-space: normal; }
  .data-table tbody th { font-size: 1rem; margin-bottom: 4px; }
  .compare td.muted::before { content: "通用 AI："; }
  .compare td:last-child::before { content: "锦书："; color: var(--gold-ink); font-weight: 600; }
}

/* ---- 言几：注音与释名 ---------------------------------------------------- */
.brand-ruby { ruby-position: over; }
.brand-ruby rt { font-family: var(--sans); font-size: .38em; letter-spacing: .1em; color: var(--gold); font-weight: 500; }
.quote-band blockquote { margin: 0 auto 18px; }
.quote-band blockquote p { font-family: var(--serif); font-size: clamp(1.1rem, 2.2vw, 1.4rem); color: #fff; letter-spacing: .08em; margin-bottom: .3em; }
.quote-band blockquote footer { color: var(--gold); font-size: .9rem; }
.quote-band cite { font-style: normal; }
.quote-band .quote-more { color: var(--gold); font-weight: 600; text-decoration: none; }
.about .brand-ruby rt { color: var(--gold-ink); }
.name-def { margin: 20px 0; display: grid; gap: 14px; }
.name-def > div { display: grid; grid-template-columns: 2.4em 1fr; gap: 12px; align-items: baseline; }
.name-def dt { font-family: var(--serif); font-size: 1.8rem; font-weight: 700; color: var(--gold-ink); line-height: 1; }
.name-def dd { margin: 0; color: var(--text-2); }
.about blockquote { margin: 24px 0; padding: 18px 22px; border-left: 3px solid var(--gold); background: var(--bg-alt); border-radius: 0 var(--radius) var(--radius) 0; }
.about blockquote p { font-family: var(--serif); font-size: 1.2rem; margin-bottom: .3em; }
.about blockquote footer { color: var(--muted); font-size: .9rem; }
.about cite { font-style: normal; }
.card-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0; }
.card-links .src { color: var(--text-2); font-weight: 500; }

/* ---- 隐私 / 支持 --------------------------------------------------------- */
.hero-note { margin-top: 16px; font-size: .9rem; color: var(--muted); }
.legal-meta { color: var(--muted); font-size: .9rem; }
.legal-summary { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin: 24px 0 8px; }
.legal-summary h2 { margin-top: 0 !important; font-size: 1.2rem; }
.legal-summary p:last-child, .legal-summary ul:last-child { margin-bottom: 0; }
.legal-section ul, .about-products, .legal-summary ul { padding-left: 1.3em; list-style: disc; }
.legal-section li { margin-bottom: .7em; color: var(--text-2); }
.legal h2 { font-size: 1.35rem; }

/* ---- 技术实现（数据产品） ------------------------------------------------- */
.arch-list { list-style: none; counter-reset: arch; padding: 0; margin: 0; display: grid; gap: 14px; }
.arch-list li { counter-increment: arch; position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px 20px 72px; }
.arch-list li::before { content: counter(arch); position: absolute; left: 24px; top: 20px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--night); color: var(--gold); font-family: var(--mono); font-weight: 700; font-size: .9rem; }
:root[data-theme="dark"] .arch-list li::before { background: var(--gold); color: var(--night); }
.arch-list h3 { font-family: var(--mono); font-size: 1.02rem; margin-bottom: .35em; }
.arch-list p { margin: 0; color: var(--text-2); font-size: .96rem; }
@media (max-width: 560px) { .arch-list li { padding: 18px 18px 18px 60px; } .arch-list li::before { left: 16px; } }
/* 产品多于 3 个（开发框架）时排三列 */
.product-grid-3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 24px; }
.product-grid-3 .product-card-body { padding: 20px 22px 24px; }
.product-grid-3 .product-card h3 { font-size: 1.35rem; }