/* ============================================================
   共享企业样式表（子页引用）
   来源：首页企业化新稿 index.html 内联样式，同一套 seed token 与组件
   说明：首页为自包含单文件（内联同一份样式），本文件供 solutions / products /
   product-detail / changelog / contact / login / console / download 引用，
   修改时请同步首页，避免出现两套视觉。
   ============================================================ */
/* ============================================================
   壹托宝官网首页 · 企业化新稿（独立对照稿，不覆盖项目现有文件）
   风格基因：云厂商式企业门户（Carbon / Cloudscape 秩序感）
   白底为绝对主导 · 深蓝仅作功能色 · 边框优先于阴影
   主色（唯一品牌强调色）：由 --seed-primary 定义，默认值见下方 seed 区块
   ============================================================ */

:root {
  /* —— Seed tokens（Nudge 可调节的唯一入口）—— */
  --seed-bg: #ffffff;
  --seed-surface: #ffffff;
  --seed-sunken: #fafbfe;
  --seed-fg: #17233d;
  --seed-primary: #1664ff;
  --seed-accent: #eef4ff;
  --seed-authority: #101d3d;
  --seed-radius: 8px;
  --seed-density: 1;      /* 间距 / 版块节奏倍率 */
  --seed-text-scale: 1;   /* 字号倍率 */
  --seed-brand-ink: #ffffff;         /* 深色权威层上的文字与描边 */
  --seed-state-success: #00875a;
  --seed-state-warning: #a15c00;
  --seed-state-error: #d0021b;

  /* —— 语义色（沿用项目现有变量名，全部由 seed 派生）—— */
  --background: var(--seed-bg);
  --foreground: var(--seed-fg);
  --card: var(--seed-surface);
  --card-foreground: var(--seed-fg);
  --popover: var(--seed-surface);
  --popover-foreground: var(--seed-fg);
  --primary: var(--seed-primary);
  --primary-foreground: var(--seed-bg);
  --secondary: color-mix(in srgb, var(--seed-fg) 6%, var(--seed-bg));
  --secondary-foreground: var(--seed-fg);
  --muted: color-mix(in srgb, var(--seed-fg) 4%, var(--seed-bg));
  --muted-foreground: color-mix(in srgb, var(--seed-fg) 68%, var(--seed-bg));
  --accent: var(--seed-accent);
  --accent-foreground: color-mix(in srgb, var(--seed-primary) 88%, var(--seed-fg));
  --border: color-mix(in srgb, var(--seed-fg) 13%, var(--seed-bg));
  --input: color-mix(in srgb, var(--seed-fg) 18%, var(--seed-bg));
  --ring: var(--seed-primary);

  --primary-hover: color-mix(in srgb, var(--seed-primary) 86%, var(--seed-fg));
  --primary-soft: color-mix(in srgb, var(--seed-primary) 7%, var(--seed-bg));
  --primary-soft-border: color-mix(in srgb, var(--seed-primary) 28%, var(--seed-bg));
  --grid-line: color-mix(in srgb, var(--seed-fg) 5%, transparent);
  --rule-strong: color-mix(in srgb, var(--seed-fg) 26%, var(--seed-bg));

  /* —— 深色权威层（安全合规 / 页脚 / 架构底座）—— */
  --authority: var(--seed-authority);
  --authority-raised: color-mix(in srgb, var(--seed-authority) 90%, var(--seed-brand-ink));
  --authority-foreground: color-mix(in srgb, var(--seed-brand-ink) 94%, var(--seed-authority));
  --authority-muted: color-mix(in srgb, var(--seed-brand-ink) 66%, var(--seed-authority));
  --authority-border: color-mix(in srgb, var(--seed-brand-ink) 16%, transparent);

  /* —— 状态色 —— */
  --state-success: var(--seed-state-success);
  --state-warning: var(--seed-state-warning);
  --state-error: var(--seed-state-error);
  --state-success-soft: color-mix(in srgb, var(--state-success) 10%, var(--seed-bg));
  --state-warning-soft: color-mix(in srgb, var(--state-warning) 12%, var(--seed-bg));
  --state-error-soft: color-mix(in srgb, var(--state-error) 8%, var(--seed-bg));

  /* —— 圆角阶梯（派生自 --seed-radius；大容器上限 16px）—— */
  --radius-xs: calc(var(--seed-radius) * 0.25);
  --radius-sm: calc(var(--seed-radius) * 0.5);
  --radius-md: var(--seed-radius);
  --radius-lg: calc(var(--seed-radius) * 2);

  /* —— 阴影（极轻，边框承担主要分隔）—— */
  --shadow-sm: 0 1px 2px color-mix(in srgb, var(--seed-fg) 7%, transparent);
  --shadow-md: 0 6px 24px color-mix(in srgb, var(--seed-fg) 9%, transparent);

  /* —— 字体 —— */
  --brand-ink: var(--seed-brand-ink);
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  /* —— 字号阶梯 —— */
  --text-2xs: calc(11px * var(--seed-text-scale));
  --text-xs: calc(12px * var(--seed-text-scale));
  --text-sm: calc(13px * var(--seed-text-scale));
  --text-base: calc(16px * var(--seed-text-scale));
  --text-lg: calc(17px * var(--seed-text-scale));
  --text-xl: calc(20px * var(--seed-text-scale));
  --text-2xl: calc(25px * var(--seed-text-scale));
  --text-3xl: calc(31px * var(--seed-text-scale));
  --text-4xl: calc(38px * var(--seed-text-scale));
  --text-display: calc(52px * var(--seed-text-scale));

  /* —— 布局节奏（派生自 --seed-density）—— */
  --container-max: 1200px;
  --gutter: calc(24px * var(--seed-density));
  --gap: calc(24px * var(--seed-density));
  --section-y: calc(88px * var(--seed-density));
  --section-y-tight: calc(64px * var(--seed-density));
  --header-h: 64px;
  --utility-h: 36px;
  --leading: 1.75;
}

/* ============ 基础 ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
main[id="main"]:focus { outline: none; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--foreground);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 { margin: 0 0 12px; font-weight: 600; line-height: 1.22; color: var(--foreground); letter-spacing: -0.015em; }
h1 { font-size: var(--text-display); letter-spacing: -0.028em; line-height: 1.12; }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); letter-spacing: -0.01em; }
h4 { font-size: var(--text-lg); }
p { margin: 0 0 14px; color: var(--muted-foreground); }
a { color: var(--primary); text-decoration: none; transition: color .18s ease, border-color .18s ease, background-color .18s ease; }
a:hover { color: var(--primary-hover); }
img, svg { max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
table { border-collapse: collapse; width: 100%; }
:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; border-radius: var(--radius-xs); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -64px; z-index: 999;
  padding: 10px 18px; background: var(--primary); color: var(--primary-foreground);
  border-radius: var(--radius-sm); font-size: var(--text-sm); font-weight: 500;
  transition: top .18s ease;
}
.skip-link:focus { top: 12px; color: var(--primary-foreground); }
.num { font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; }

/* ============ 容器 / 栅格 ============ */
.container-page { max-width: var(--container-max); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section-tight { padding-block: var(--section-y-tight); }
.section-sunken { background: var(--muted); }
.section-sunk { background: var(--seed-sunken); }
.grid12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gap); }
.divider { height: 1px; background: var(--border); border: 0; margin: 0; }

/* ============ 章节标题：左对齐「细线 + 序号 + H2 + 副标题」 ============ */
.block-head { margin-bottom: calc(40px * var(--seed-density)); max-width: 860px; }
.block-head__top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.block-head__rule { width: 28px; height: 1px; background: var(--rule-strong); flex: none; }
.block-head__index {
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .12em;
  color: var(--muted-foreground); text-transform: uppercase;
}
.block-head__kicker {
  font-size: var(--text-xs); letter-spacing: .09em; font-weight: 600;
  color: var(--primary); text-transform: uppercase;
}
.block-head h2 { font-size: var(--text-3xl); margin-bottom: 10px; }
.block-head__sub { font-size: var(--text-lg); color: var(--muted-foreground); margin: 0; max-width: 760px; }
.block-head--split { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; max-width: none; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: var(--text-base); font-weight: 500; line-height: 1.4;
  border: 1px solid transparent; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn--primary { background: var(--primary); color: var(--primary-foreground); }
.btn--primary:hover { background: var(--primary-hover); color: var(--primary-foreground); }
.btn--outline { background: transparent; color: var(--foreground); border-color: var(--input); }
.btn--outline:hover { border-color: var(--primary); color: var(--primary); }
.btn--ghost { background: transparent; color: var(--primary); padding-inline: 8px; border-color: transparent; }
.btn--on-dark { background: var(--seed-bg); color: var(--primary); }
.btn--on-dark:hover { background: var(--accent); color: var(--primary-hover); }
.btn--outline-dark { background: transparent; color: var(--authority-foreground); border-color: var(--authority-border); }
.btn--outline-dark:hover { border-color: var(--authority-foreground); color: var(--seed-bg); }
.btn--lg { padding: 14px 28px; font-size: var(--text-lg); }
.btn--sm { padding: 7px 14px; font-size: var(--text-sm); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

/* ============ 徽标 / 状态标签 / 「示意」标注 ============ */
.tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: var(--radius-xs);
  font-size: var(--text-xs); font-weight: 500; line-height: 1.7;
  border: 1px solid transparent; white-space: nowrap;
}
.tag--live { background: var(--state-success-soft); color: var(--state-success); border-color: color-mix(in srgb, var(--state-success) 24%, transparent); }
.tag--iter { background: var(--primary-soft); color: var(--accent-foreground); border-color: var(--primary-soft-border); }
.tag--plan { background: var(--muted); color: var(--muted-foreground); border-color: var(--border); }
.tag--warn { background: var(--state-warning-soft); color: var(--state-warning); border-color: color-mix(in srgb, var(--state-warning) 26%, transparent); }
.tag--demo {
  background: transparent; color: var(--muted-foreground);
  border: 1px dashed var(--input); font-size: var(--text-2xs); letter-spacing: .06em; padding: 0 6px;
}
.badge-role {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px;
  border: 1px solid var(--border); border-radius: var(--radius-xs);
  font-size: var(--text-2xs); color: var(--muted-foreground); background: var(--background);
}
.badge-role + .badge-role { margin-left: 6px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: var(--text-xs); font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted-foreground);
}
.eyebrow::before { content: ""; width: 18px; height: 2px; background: var(--primary); flex: none; }

/* ============ 图标容器 ============ */
.ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; flex: none;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--background); color: var(--primary);
}
.ico svg { width: 20px; height: 20px; }
.ico--plain { border-color: transparent; background: transparent; color: var(--foreground); }
.ico--on-dark { border-color: var(--authority-border); background: color-mix(in srgb, var(--seed-brand-ink) 8%, transparent); color: var(--authority-foreground); }

/* ============ 卡片（边框优先） ============ */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.card--pad { padding: calc(24px * var(--seed-density)); }
.card--hover:hover { border-color: var(--primary-soft-border); box-shadow: var(--shadow-md); }
.card--flat { box-shadow: none; }

/* ============ s0 顶部工具条 ============ */
.utility {
  background: var(--authority); color: var(--authority-muted);
  font-size: var(--text-xs); line-height: 1.4;
}
.utility__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  min-height: var(--utility-h); padding-block: 8px;
}
.utility__org { display: inline-flex; align-items: center; gap: 10px; min-width: 0; }
.utility__org > span:not(.tag) { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.utility__org .tag { flex: none; }
.utility__links { display: inline-flex; align-items: center; gap: 22px; }
.utility a { color: var(--authority-muted); display: inline-flex; align-items: center; gap: 6px; }
.utility a:hover { color: var(--authority-foreground); }
.utility a svg { width: 14px; height: 14px; }
.utility__sep { width: 1px; height: 14px; background: var(--authority-border); }

/* ============ s1 主导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--seed-bg) 94%, transparent);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 32px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; color: var(--foreground); }
.brand__mark { width: 26px; height: 26px; flex: none; }
.brand__name { font-weight: 700; font-size: var(--text-xl); letter-spacing: .01em; white-space: nowrap; }
.brand__suffix { font-size: var(--text-xs); color: var(--muted-foreground); border-left: 1px solid var(--border); padding-left: 8px; margin-left: 2px; }
.nav-group { display: flex; align-items: stretch; gap: 28px; min-width: 0; margin-left: auto; align-self: stretch; }
.nav-link {
  display: inline-flex; align-items: center; padding: 0;
  color: var(--foreground); font-size: var(--text-base); font-weight: 400;
  position: relative;
}
.nav-link:hover { color: var(--primary); }
.nav-link[aria-current="page"] { color: var(--primary); font-weight: 500; }
.nav-link[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--primary);
}
.header-actions { display: inline-flex; align-items: center; gap: 12px; flex: none; }

/* ============ s2 Hero：白底 + 技术网格，无渐变 ============ */
.hero {
  padding-block: calc(72px * var(--seed-density)) calc(76px * var(--seed-density));
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 64px 64px,
    var(--background);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.hero__grid { align-items: start; }
.hero__copy { grid-column: span 6; }
.hero__visual { grid-column: span 6; }
.hero h1 { margin-bottom: 18px; }
.hero__lede { font-size: var(--text-lg); max-width: 560px; margin-bottom: 28px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero__assure { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; padding-top: 22px; border-top: 1px solid var(--border); }
.hero__assure li { display: flex; align-items: center; gap: 8px; font-size: var(--text-sm); color: var(--muted-foreground); }
.hero__assure svg { width: 16px; height: 16px; color: var(--primary); flex: none; }
.hero__meta { margin-top: 20px; font-size: var(--text-xs); color: var(--muted-foreground); }

/* 右侧链路总览面板 */
.panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); overflow: hidden;
}
.panel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 20px; border-bottom: 1px solid var(--border); background: var(--seed-sunken);
}
.panel__title { font-size: var(--text-sm); font-weight: 600; letter-spacing: .02em; color: var(--foreground); }
.panel__body { padding: 20px; }
.panel__foot {
  padding: 12px 20px; border-top: 1px solid var(--border); background: var(--background);
  font-size: var(--text-xs); color: var(--muted-foreground);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.chainmap__lane {
  display: flex; align-items: center; gap: 10px;
  font-size: var(--text-2xs); letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted-foreground); margin-bottom: 10px;
}
.chainmap__lane::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.chainmap__row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 10px; }
.chaincell {
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 10px; text-align: center; background: var(--background);
}
.chaincell svg { width: 20px; height: 20px; color: var(--primary); display: block; margin: 0 auto 6px; }
.chaincell b { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--foreground); }
.chaincell span { font-size: var(--text-2xs); color: var(--muted-foreground); }
.chainmap__base {
  margin-top: 14px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: var(--authority); color: var(--authority-foreground);
  display: flex; align-items: center; gap: 12px; font-size: var(--text-sm);
}
.chainmap__base svg { width: 18px; height: 18px; flex: none; color: var(--authority-foreground); }
.chainmap__base small { display: block; font-size: var(--text-2xs); color: var(--authority-muted); margin-top: 2px; }

/* ============ s3 信任带：客户类型 + 规模指标 ============ */
.logos__label { font-size: var(--text-xs); letter-spacing: .08em; text-transform: uppercase; color: var(--muted-foreground); margin-bottom: 16px; }
.logos { display: flex; flex-wrap: wrap; gap: 10px; }
.logos li {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 9px 14px; font-size: var(--text-sm); color: var(--foreground); background: var(--background);
}
.logos li svg { width: 16px; height: 16px; color: var(--muted-foreground); }
.logos__note { font-size: var(--text-xs); color: var(--muted-foreground); margin-top: 14px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; margin-top: calc(40px * var(--seed-density)); }
.metrics > div { background: var(--background); padding: calc(22px * var(--seed-density)) calc(20px * var(--seed-density)); }
.metrics dt { font-size: var(--text-xs); color: var(--muted-foreground); letter-spacing: .02em; margin-bottom: 6px; }
.metrics dd { margin: 0; font-size: var(--text-2xl); font-weight: 600; color: var(--foreground); font-variant-numeric: tabular-nums; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.metrics dd small { font-size: var(--text-sm); font-weight: 400; color: var(--muted-foreground); }

/* ============ s4 平台架构：4 层 + 交互切换 ============ */
.arch { align-items: start; }
.arch__aside { grid-column: span 4; position: sticky; top: calc(var(--header-h) + 24px); }
.arch__stack { grid-column: span 8; }
.arch__layer {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: center; gap: 16px;
  width: 100%; text-align: left; cursor: pointer;
  padding: 18px 20px; background: var(--background);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  font-family: var(--font-sans); color: var(--foreground);
  transition: border-color .18s ease, background-color .18s ease;
}
.arch__layer:hover { border-color: var(--primary-soft-border); background: var(--primary-soft); }
.arch__layer[aria-selected="true"] { border-color: var(--primary); background: var(--background); box-shadow: inset 3px 0 0 var(--primary); }
.arch__layer--base { background: var(--authority); border-color: var(--authority); color: var(--authority-foreground); }
.arch__layer--base:hover { background: var(--authority-raised); border-color: var(--authority-raised); }
.arch__layer--base[aria-selected="true"] { background: var(--authority); border-color: var(--primary); box-shadow: inset 3px 0 0 var(--primary); }
.arch__idx { font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: .1em; color: var(--muted-foreground); }
.arch__layer--base .arch__idx { color: var(--authority-muted); }
.arch__layer .arch__layer__title { display: block; font-size: var(--text-lg); font-weight: 600; color: inherit; margin: 0 0 3px; }
.arch__layer .arch__layer__desc { display: block; font-size: var(--text-sm); color: var(--muted-foreground); }
.arch__layer--base .arch__layer__desc { color: var(--authority-muted); }
.arch__chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; max-width: 260px; }
.arch__chips span {
  font-size: var(--text-2xs); padding: 2px 7px; border-radius: var(--radius-xs);
  border: 1px solid var(--border); color: var(--muted-foreground); background: var(--background); white-space: nowrap;
}
.arch__layer--base .arch__chips span { border-color: var(--authority-border); color: var(--authority-muted); background: transparent; }
.arch__connector {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0 6px 21px; font-size: var(--text-2xs); letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted-foreground);
}
.arch__tabs { display: grid; gap: 0; }
.arch__connector::before { content: ""; width: 1px; height: 16px; background: var(--rule-strong); }
.arch__detail {
  background: var(--seed-sunken); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: calc(24px * var(--seed-density));
}
.arch__detail h4 { font-size: var(--text-lg); margin-bottom: 8px; }
.arch__detail p { font-size: var(--text-sm); margin-bottom: 16px; }
.arch__detail ul { display: grid; gap: 10px; }
.arch__detail li { display: flex; gap: 10px; font-size: var(--text-sm); color: var(--muted-foreground); }
.arch__detail li svg { width: 16px; height: 16px; flex: none; color: var(--primary); margin-top: 4px; }
.arch__list { margin-top: 20px; display: grid; gap: 8px; }
.arch__list li { display: flex; align-items: center; gap: 10px; font-size: var(--text-sm); color: var(--muted-foreground); }
.arch__list b { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--foreground); font-weight: 500; }
.check-list li { display: flex; gap: 10px; }
.check-list li svg { width: 16px; height: 16px; flex: none; margin-top: 5px; color: var(--primary); }

/* ============ s5 行业方案：链路条 + 决策表 ============ */
.chainbar { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; margin-bottom: calc(32px * var(--seed-density)); }
.chainbar li { position: relative; background: var(--background); padding: 18px 30px 18px 18px; }
.chainbar li:hover { background: var(--primary-soft); }
.chainbar li::after {
  content: ""; position: absolute; right: 10px; top: 50%; width: 8px; height: 8px;
  border-right: 1px solid var(--rule-strong); border-top: 1px solid var(--rule-strong);
  transform: translateY(-50%) rotate(45deg);
}
.chainbar li:last-child::after { display: none; }
.chainbar small { display: block; font-family: var(--font-mono); font-size: var(--text-2xs); color: var(--muted-foreground); letter-spacing: .08em; margin-bottom: 4px; }
.chainbar b { font-size: var(--text-base); font-weight: 600; color: var(--foreground); }
.tablewrap { border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; background: var(--background); }
table.grid { font-size: var(--text-sm); }
table.grid caption { text-align: left; }
table.grid th, table.grid td { padding: 16px 18px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--border); }
table.grid thead th {
  background: var(--seed-sunken); font-size: var(--text-xs); font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted-foreground); white-space: nowrap;
  border-bottom: 1px solid var(--input);
}
table.grid tbody tr:last-child > * { border-bottom: 0; }
table.grid tbody tr:hover > td { background: var(--primary-soft); }
table.grid td.strong { font-weight: 600; color: var(--foreground); }
table.grid td .cellsub { display: block; font-size: var(--text-2xs); color: var(--muted-foreground); font-weight: 400; margin-top: 3px; }
table.grid td a { display: inline-flex; align-items: center; gap: 4px; font-size: var(--text-sm); white-space: nowrap; }
table.grid td a svg { width: 14px; height: 14px; }
.combo-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.combo-tags span { font-size: var(--text-2xs); padding: 2px 7px; border: 1px solid var(--border); border-radius: var(--radius-xs); color: var(--muted-foreground); white-space: nowrap; }
.tablefoot { padding: 12px 18px; background: var(--seed-sunken); border-top: 1px solid var(--border); font-size: var(--text-xs); color: var(--muted-foreground); display: flex; align-items: center; gap: 8px; }
.tablefoot svg { width: 14px; height: 14px; flex: none; color: var(--muted-foreground); }

/* ============ s6 产品目录（三组分层，替代 12 张等大卡片） ============ */
.catalog { display: grid; gap: calc(28px * var(--seed-density)); }
.catalog__group { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--background); overflow: hidden; }
.catalog__head {
  display: flex; align-items: center; gap: 16px; padding: 18px 20px;
  background: var(--seed-sunken); border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.catalog__head .ico { background: var(--background); }
.catalog__head__text { min-width: 0; flex: 1 1 320px; }
.catalog__head h3 { font-size: var(--text-xl); margin: 0 0 2px; }
.catalog__head p { font-size: var(--text-sm); margin: 0; }
.catalog__head__count { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--muted-foreground); letter-spacing: .06em; white-space: nowrap; }
/* 目录行用弹性布局：交付形态、适用角色两列在部分页面会省略，
   轨道数量与子元素数量解耦后不会再出现内容挤进窄列的问题 */
.catalog__row {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.catalog__row:last-child { border-bottom: 0; }
.catalog__row:hover { background: var(--primary-soft); }
.catalog__name { flex: 0 0 210px; display: flex; align-items: center; gap: 12px; min-width: 0; }
.catalog__name svg { width: 18px; height: 18px; color: var(--primary); flex: none; }
.catalog__name b { font-size: var(--text-base); font-weight: 600; display: block; }
.catalog__name small { font-size: var(--text-2xs); color: var(--muted-foreground); font-family: var(--font-mono); letter-spacing: .04em; }
.catalog__desc { flex: 1 1 0; min-width: 0; font-size: var(--text-sm); color: var(--muted-foreground); }
.catalog__desc em { font-style: normal; color: var(--foreground); font-weight: 500; }
.catalog__term, .catalog__roles { flex: 0 1 150px; min-width: 0; display: flex; flex-wrap: wrap; gap: 5px; }
.catalog__roles { flex-basis: 104px; }
.catalog__term span, .catalog__roles span { font-size: var(--text-2xs); padding: 2px 7px; border: 1px solid var(--border); border-radius: var(--radius-xs); color: var(--muted-foreground); white-space: nowrap; }
.catalog__row__end { flex: 0 0 auto; margin-left: auto; display: flex; justify-content: flex-end; align-items: center; gap: 10px; }
.catalog__row__end a { display: inline-flex; align-items: center; gap: 4px; font-size: var(--text-sm); white-space: nowrap; }
.catalog__row__end a svg { width: 14px; height: 14px; }
.catalog__foot { padding: 14px 20px; background: var(--seed-sunken); border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.catalog__foot p { font-size: var(--text-xs); margin: 0; }
.catalog__legend { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 20px; font-size: var(--text-xs); color: var(--muted-foreground); }
.catalog__legend li { display: inline-flex; align-items: center; gap: 6px; }

/* ============ s7 安全与合规（深色权威带） ============ */
.secure { background: var(--authority); color: var(--authority-foreground); padding-block: var(--section-y); }
.secure h2, .secure h3, .secure h4 { color: var(--authority-foreground); }
.secure p { color: var(--authority-muted); }
.secure .block-head__rule { background: var(--authority-border); }
.secure .block-head__index { color: var(--authority-muted); }
.secure .block-head__kicker { color: color-mix(in srgb, var(--seed-primary) 55%, var(--seed-brand-ink)); }
.secure__grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--authority-border); border: 1px solid var(--authority-border); border-radius: var(--radius-md); overflow: hidden; }
.secure__grid article { background: var(--authority); padding: calc(24px * var(--seed-density)); }
.secure__grid article:hover { background: var(--authority-raised); }
.secure__grid h4 { font-size: var(--text-lg); margin: 14px 0 6px; }
.secure__grid p { font-size: var(--text-sm); margin: 0; }
.secure__cert {
  margin-top: 24px; padding: 18px 20px; border: 1px solid var(--authority-border); border-radius: var(--radius-md);
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: var(--text-sm); color: var(--authority-muted); background: color-mix(in srgb, var(--seed-brand-ink) 4%, transparent);
}
.secure__cert svg { width: 18px; height: 18px; color: var(--authority-foreground); flex: none; }
.secure__cert b { color: var(--authority-foreground); font-weight: 600; }
.secure__cert .tag--demo { color: var(--authority-muted); border-color: var(--authority-border); }

/* ============ s8 交付与服务 ============ */
.delivery { align-items: start; }
.steps-wrap { grid-column: span 7; }
.steps { position: relative; padding-left: 4px; }
.steps > li { position: relative; padding: 0 0 calc(26px * var(--seed-density)) 40px; }
.steps > li:last-child { padding-bottom: 0; }
.steps > li::before {
  content: ""; position: absolute; left: 9px; top: 22px; bottom: -4px; width: 1px; background: var(--border);
}
.steps > li:last-child::before { display: none; }
.steps__dot {
  position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 999px;
  border: 1px solid var(--primary); background: var(--background); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: var(--text-2xs); font-weight: 600;
}
.steps h4 { font-size: var(--text-lg); margin-bottom: 4px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.steps h4 .dur { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; color: var(--muted-foreground); border: 1px solid var(--border); border-radius: var(--radius-xs); padding: 1px 7px; }
.steps p { font-size: var(--text-sm); margin: 0; }
.service { grid-column: span 5; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--background); padding: calc(24px * var(--seed-density)); }
.service h3 { font-size: var(--text-xl); margin-bottom: 6px; }
.service > p { font-size: var(--text-sm); margin-bottom: 18px; }
.service dl { margin: 0; border-top: 1px solid var(--border); }
.service .srow { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: var(--text-sm); }
.service .srow dt { color: var(--muted-foreground); }
.service .srow dd { margin: 0; font-weight: 500; color: var(--foreground); display: inline-flex; align-items: center; gap: 8px; text-align: right; }
.service .srow svg { width: 16px; height: 16px; color: var(--primary); }
.service__cta { margin-top: 18px; display: flex; gap: 12px; flex-wrap: wrap; }

/* ============ s9 场景案例 ============ */
.cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.case { padding: calc(24px * var(--seed-density)); display: flex; flex-direction: column; gap: 14px; }
.case__head { display: flex; align-items: center; gap: 12px; }
.case__head h3 { font-size: var(--text-lg); margin: 0; }
.case__head small { display: block; font-size: var(--text-2xs); color: var(--muted-foreground); font-weight: 400; margin-top: 2px; }
.case dl { margin: 0; display: grid; gap: 10px; }
.case dl div { display: grid; gap: 2px; }
.case dt { font-size: var(--text-2xs); letter-spacing: .08em; text-transform: uppercase; color: var(--muted-foreground); }
.case dd { margin: 0; font-size: var(--text-sm); color: var(--foreground); }
.case__result { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--border); display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; font-size: var(--text-sm); color: var(--muted-foreground); }
.case__result b { font-size: var(--text-2xl); color: var(--primary); font-variant-numeric: tabular-nums; }
.quote {
  margin: calc(28px * var(--seed-density)) 0 0; padding: calc(24px * var(--seed-density));
  border-left: 2px solid var(--primary); background: var(--seed-sunken);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.quote p { font-size: var(--text-lg); color: var(--foreground); margin-bottom: 10px; }
.quote footer { font-size: var(--text-sm); color: var(--muted-foreground); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ============ s10 关于我们 ============ */
.about { align-items: start; }
.about__text { grid-column: span 7; }
.about__text p { font-size: var(--text-base); }
.facts { grid-column: span 5; border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; background: var(--background); }
.facts .frow { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 20px; border-bottom: 1px solid var(--border); font-size: var(--text-sm); }
.facts .frow:last-child { border-bottom: 0; }
.facts .frow:hover { background: var(--seed-sunken); }
.facts dt { color: var(--muted-foreground); }
.facts dd { margin: 0; font-weight: 600; color: var(--foreground); text-align: right; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.timeline { margin-top: calc(40px * var(--seed-density)); grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.timeline > li { background: var(--background); padding: 20px; }
.timeline > li:hover { background: var(--primary-soft); }
.timeline b { display: block; font-family: var(--font-mono); font-size: var(--text-sm); color: var(--primary); margin-bottom: 6px; letter-spacing: .04em; }
.timeline p { font-size: var(--text-sm); margin: 0; }

/* ============ s11 企业咨询表单 ============ */
.lead { align-items: start; }
.lead__info { grid-column: span 5; }
.lead__promise { margin: 20px 0 28px; display: grid; gap: 16px; }
.lead__promise > li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 14px; align-items: start; }
.lead__promise__n {
  width: 28px; height: 28px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--primary); background: var(--background);
}
.lead__promise h4 { font-size: var(--text-base); margin-bottom: 3px; }
.lead__promise p { font-size: var(--text-sm); margin: 0; }
.lead__contact { border-top: 1px solid var(--border); padding-top: 20px; display: grid; gap: 12px; }
.lead__contact li { display: flex; align-items: center; gap: 10px; font-size: var(--text-sm); color: var(--muted-foreground); flex-wrap: wrap; }
.lead__contact svg { width: 16px; height: 16px; color: var(--primary); flex: none; }
.lead__contact b { color: var(--foreground); font-weight: 500; }
.lead__form { grid-column: span 7; }
.formcard { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--background); box-shadow: var(--shadow-sm); overflow: hidden; }
.formcard__head { padding: 20px calc(28px * var(--seed-density)); border-bottom: 1px solid var(--border); background: var(--seed-sunken); }
.formcard__head h3 { font-size: var(--text-xl); margin: 0; }
.formcard__head p { font-size: var(--text-sm); margin: 4px 0 0; }
.formcard__body { padding: calc(28px * var(--seed-density)); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 16px; }
.field { display: grid; gap: 6px; min-width: 0; }
.field[hidden] { display: none; }
.field--full { grid-column: 1 / -1; }
.field label, .form-label { font-size: var(--text-sm); font-weight: 500; color: var(--foreground); display: flex; align-items: center; gap: 6px; }
.req { color: var(--state-error); font-size: var(--text-xs); }
.hint { font-size: var(--text-xs); color: var(--muted-foreground); }
.control {
  width: 100%; padding: 11px 14px; border: 1px solid var(--input); border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: var(--text-base); color: var(--foreground);
  background: var(--background); outline: none; transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
}
.control:hover { border-color: color-mix(in srgb, var(--seed-fg) 30%, var(--seed-bg)); }
.control:focus-visible { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--seed-primary) 16%, transparent); }
textarea.control { resize: vertical; min-height: 96px; line-height: 1.6; }
select.control { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted-foreground) 50%), linear-gradient(135deg, var(--muted-foreground) 50%, transparent 50%); background-position: calc(100% - 18px) calc(50% + 1px), calc(100% - 13px) calc(50% + 1px); background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; padding-right: 40px; }
.field[data-invalid="true"] .control { border-color: var(--state-error); background: var(--state-error-soft); }
.field[data-invalid="true"] .control:focus-visible { box-shadow: 0 0 0 3px color-mix(in srgb, var(--state-error) 18%, transparent); }
/* 错误提示常驻占位（visibility 隐藏）：出现/消失时不改变文档流高度，避免下方内容跳动 */
.err { display: flex; visibility: hidden; align-items: center; gap: 6px; min-height: 18px; font-size: var(--text-xs); color: var(--state-error); }
.err svg { width: 14px; height: 14px; flex: none; }
.field[data-invalid="true"] .err { visibility: visible; }
.check {
  display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; align-items: start;
  font-size: var(--text-sm); color: var(--muted-foreground); cursor: pointer;
}
.check input {
  appearance: none; width: 18px; height: 18px; margin: 2px 0 0; flex: none;
  border: 1px solid var(--input); border-radius: var(--radius-xs); background: var(--background);
  cursor: pointer; position: relative; transition: background-color .18s ease, border-color .18s ease;
}
.check input:hover { border-color: var(--primary); }
.check input:checked { background: var(--primary); border-color: var(--primary); }
.check input:checked::after {
  content: ""; position: absolute; inset: 0;
  background: no-repeat center / 11px var(--primary-foreground);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 11px no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='3'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 11px no-repeat;
  background-color: var(--primary-foreground);
}
.check input:focus-visible { outline: 2px solid var(--ring); outline-offset: 2px; }
.field[data-invalid="true"] .check input { border-color: var(--state-error); }
/* 顶部表单级告警常驻占位：预留整行高度，出现时不把下方表单顶下去 */
.formalert {
  display: flex; visibility: hidden; align-items: flex-start; gap: 10px; margin-bottom: 18px;
  padding: 12px 14px; border-radius: var(--radius-sm);
  background: var(--state-error-soft); border: 1px solid color-mix(in srgb, var(--state-error) 30%, transparent);
  color: color-mix(in srgb, var(--state-error) 85%, var(--seed-fg)); font-size: var(--text-sm);
}
.formalert[data-show="true"] { visibility: visible; }
.formalert svg { width: 16px; height: 16px; flex: none; margin-top: 3px; }
.formcard__foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.formcard__foot .note { font-size: var(--text-xs); color: var(--muted-foreground); max-width: 320px; }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--primary-foreground) 40%, transparent);
  border-top-color: var(--primary-foreground); animation: spin .7s linear infinite; display: none;
}
.btn[data-loading="true"] .spinner { display: block; }
.btn[data-loading="true"] .btn__icon { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.success { display: none; padding: calc(32px * var(--seed-density)); text-align: left; }
.success[data-show="true"] { display: block; }
.success__icon {
  width: 44px; height: 44px; border-radius: 999px; background: var(--state-success-soft);
  border: 1px solid color-mix(in srgb, var(--state-success) 28%, transparent);
  display: flex; align-items: center; justify-content: center; color: var(--state-success); margin-bottom: 16px;
}
.success__icon svg { width: 22px; height: 22px; }
.success h3 { font-size: var(--text-xl); margin-bottom: 6px; }
.success p { font-size: var(--text-sm); }
.success dl { margin: 18px 0; border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.success .srow { display: flex; justify-content: space-between; gap: 16px; padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: var(--text-sm); }
.success .srow:last-child { border-bottom: 0; }
.success dt { color: var(--muted-foreground); }
.success dd { margin: 0; font-weight: 500; text-align: right; }

/* ============ s12 页脚 ============ */
.footer { background: var(--authority); color: var(--authority-muted); }
.footer a { color: var(--authority-muted); }
.footer a:hover { color: var(--authority-foreground); }
.footer__grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px; padding-block: 56px 40px;
}
.footer .brand__name { color: var(--authority-foreground); }
.footer__intro { margin: 14px 0 0; max-width: 300px; font-size: var(--text-sm); line-height: 1.8; }
.footer__col h4 { font-size: var(--text-sm); font-weight: 600; color: var(--authority-foreground); margin-bottom: 14px; letter-spacing: .02em; }
.footer__col li { line-height: 2.05; font-size: var(--text-sm); }
.footer__legal { border-top: 1px solid var(--authority-border); }
.footer__legal__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 12px 24px;
  flex-wrap: wrap; padding-block: 20px; font-size: var(--text-xs);
}
.footer__legal .legal-links { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.disclaimer {
  border-top: 1px solid var(--authority-border); padding-block: 16px;
  font-size: var(--text-2xs); line-height: 1.8; color: color-mix(in srgb, var(--seed-brand-ink) 48%, var(--seed-authority));
  max-width: 900px;
}

/* ============ 响应式（桌面优先，逐级降级不丢导航与信息） ============ */
@media (max-width: 1279px) {
  :root { --section-y: calc(72px * var(--seed-density)); }
  .hero__copy, .hero__visual { grid-column: span 12; }
  .hero__visual { margin-top: 20px; }
  .arch__aside, .arch__stack { grid-column: span 12; }
  .arch__aside { position: static; }
  .arch__detail { margin-top: 20px; }
  .steps-wrap, .service { grid-column: span 12; }
  .lead__info, .lead__form { grid-column: span 12; }
  .about__text, .facts { grid-column: span 12; }
  .secure__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog__name { flex-basis: 190px; }
  .catalog__term { flex-basis: 132px; }
  .catalog__row .catalog__roles { display: none; }
}
@media (max-width: 1023px) {
  .chainbar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cases { grid-template-columns: minmax(0, 1fr); }
  .metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav-group { gap: 20px; }
  .nav-link { font-size: var(--text-sm); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
}
@media (max-width: 899px) {
  /* 工具条改为换行堆叠：机构名与次级入口都不再被裁切 */
  .utility__inner { flex-wrap: wrap; gap: 6px 16px; }
  .utility__org { flex: 1 1 100%; }
  .utility__org > span:not(.tag) { white-space: normal; overflow: visible; text-overflow: clip; }
  .utility__links { gap: 16px; flex-wrap: wrap; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* 目录行改为堆叠：描述与两组标签都换到整行，信息不因窄屏被丢弃 */
  .catalog__row { flex-wrap: wrap; gap: 8px 16px; }
  .catalog__name { flex: 1 1 190px; order: 1; }
  .catalog__row__end { order: 2; }
  .catalog__desc { flex: 1 1 100%; order: 3; }
  .catalog__term, .catalog__roles { flex: 0 1 auto; order: 4; }
  .catalog__term + .catalog__roles { border-left: 1px solid var(--border); padding-left: 16px; }
  .catalog__row .catalog__roles { display: flex; }
  /* 主导航改为可横向滑动的整行条带，链接文字不再被拆成两行 */
  .header-inner { flex-wrap: wrap; height: auto; padding-block: 10px; gap: 12px 20px; }
  .nav-group { order: 3; flex-basis: 100%; margin-left: 0; overflow-x: auto; scrollbar-width: none; gap: 20px; }
  .nav-group::-webkit-scrollbar { display: none; }
  .nav-link { white-space: nowrap; padding-bottom: 8px; }
  .header-actions { margin-left: auto; }
  /* 决策表降级为堆叠式卡片，信息不丢失 */
  table.grid thead { display: none; }
  table.grid, table.grid tbody, table.grid tr, table.grid td { display: block; width: 100%; }
  table.grid tr { border-bottom: 1px solid var(--border); padding: 6px 0; }
  table.grid tr:last-child { border-bottom: 0; }
  table.grid td { border-bottom: 0; padding: 8px 18px; display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; align-items: start; }
  table.grid td::before { content: attr(data-label); font-size: var(--text-2xs); letter-spacing: .06em; text-transform: uppercase; color: var(--muted-foreground); padding-top: 3px; }
  table.grid td > .tag { grid-column: 2; justify-self: start; }
}
@media (max-width: 767px) {
  .hero__assure { grid-template-columns: minmax(0, 1fr); }
  .arch__layer { grid-template-columns: 32px minmax(0, 1fr); }
  .arch__chips { grid-column: 1 / -1; justify-content: flex-start; max-width: none; }
  .catalog__name { flex-basis: 150px; }
  .catalog__term, .catalog__roles { flex-basis: 100%; }
  .catalog__term + .catalog__roles { border-left: 0; padding-left: 0; }
  .chainbar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .block-head--split { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 639px) {
  .secure__grid, .metrics, .timeline { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); padding-block: 40px 32px; }
  .catalog__head { gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .spinner { animation-duration: .7s !important; animation-iteration-count: infinite !important; }
}