/* ════════════════════════════════════════════════════════════════
 * 环球数科官网 — 方案 04「shukeyun heritage」
 * 设计语言：延续集团 shukeyun 门户 Deep Blue × 液态玻璃
 * Token 严格复现 shukeyun-portal globals.css，纯静态零依赖。
 * Breakpoints: 640 / 768 / 1024 / 1280
 * ════════════════════════════════════════════════════════════════ */

:root {
  color-scheme: dark;

  /* ── Backgrounds ── */
  --bg-top: #06101a;
  --bg-bottom: #0b1521;
  --page-fg: #edf5ff;
  --page-glow-a: rgba(90, 148, 225, 0.08);
  --page-glow-b: rgba(59, 130, 246, 0.06);

  /* ── Glass surfaces ── */
  --surface: linear-gradient(180deg, rgba(40, 56, 78, 0.62), rgba(26, 40, 58, 0.54));
  --surface-strong: linear-gradient(180deg, rgba(52, 70, 94, 0.70), rgba(32, 48, 68, 0.62));
  --surface-dark: linear-gradient(180deg, rgba(9, 18, 30, 0.72), rgba(8, 15, 26, 0.56));

  /* ── Text ── */
  --ink: #cfdae5;
  --ink-strong: #f5f9ff;
  --ink-soft: rgba(207, 218, 229, 0.78);
  --muted: #92a4b7;

  /* ── Borders ── */
  --line: rgba(176, 193, 212, 0.18);
  --line-strong: rgba(176, 193, 212, 0.28);

  /* ── Brand ── */
  --accent-deep: #3B82F6;
  --accent-warm: #f5cc7d;
  --brand-primary: #38BDF8;
  --brand-secondary: #0EA5E9;
  --brand-accent: #22D3EE;
  --brand-tint-bg: rgba(56, 189, 248, 0.10);
  --brand-tint-border: rgba(56, 189, 248, 0.25);
  --brand-text: #7DD3FC;

  /* ── Header ── */
  --header-bg: rgba(8, 15, 24, 0.72);
  --header-border: rgba(223, 234, 245, 0.12);
  --header-text: #f5f9ff;
  --header-muted: rgba(223, 234, 245, 0.8);
  --nav-hover-bg: rgba(255, 255, 255, 0.08);

  /* ── Radius ── */
  --radius-md: 10px;
  --radius-button: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* ── Shadow ── */
  --shadow-sm: 0 14px 28px rgba(2, 8, 20, 0.10);
  --shadow-md: 0 18px 42px rgba(2, 8, 20, 0.18);
  --shadow-lg: 0 24px 60px rgba(2, 8, 20, 0.26);
  --shadow-xl: 0 30px 80px rgba(2, 8, 20, 0.32);
  --shadow-focus: 0 0 0 4px rgba(59, 130, 246, 0.14);

  /* ── Spacing (8px 步进) ── */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.25rem;
  --space-xl: 1.5rem;
  --space-2xl: 2rem;
  --space-3xl: 2.5rem;
  --space-4xl: 3.5rem;

  --container: 1280px;

  --input-bg: rgba(10, 20, 34, 0.8);
  --input-bg-focus: rgba(14, 25, 40, 0.92);

  --font-mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  min-height: 100%;
  background: var(--bg-bottom);
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 14% 16%, var(--page-glow-a), transparent 26%),
    radial-gradient(circle at 84% 8%, var(--page-glow-b), transparent 24%),
    radial-gradient(circle at 58% 110%, rgba(255, 255, 255, 0.02), transparent 30%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  background-color: var(--bg-bottom);
  color: var(--page-fg);
  font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(80px);
}
body::before { top: 6vh; left: -6rem; width: 18rem; height: 18rem; background: rgba(90, 148, 225, 0.06); }
body::after  { right: -4rem; bottom: 8vh; width: 16rem; height: 16rem; background: rgba(59, 130, 246, 0.05); }

::selection { background: rgba(59, 130, 246, 0.32); color: #ffffff; }

a { color: inherit; text-decoration: none; }
p { line-height: 1.75; }
ul { list-style: none; }
svg { display: block; flex-shrink: 0; }

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: 6px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-xl);
}

/* ── Skip link (可访问性) ── */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 200;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-button);
  background: var(--brand-secondary);
  color: #052033;
  font-weight: 600;
  transition: top 180ms ease;
}
.skip-link:focus { top: 0.75rem; }

/* ════════════════════════════════════════
 * Header — fixed 液态玻璃
 * ════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  backdrop-filter: blur(26px) saturate(160%);
  -webkit-backdrop-filter: blur(26px) saturate(160%);
}

.site-header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  height: 4.25rem;
}

.site-header-logo {
  display: inline-flex;
  align-items: center;
  gap: 0;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--ink-strong);
  white-space: nowrap;
}

/* 新 logo 已包含图形与文字，作为完整品牌标识显示。 */
.site-header-logo-mark {
  display: block;
  width: 144px;
  height: auto;
  object-fit: contain;
  flex-shrink: 0;
  background: none;
  box-shadow: none;
  filter: none;
}

.site-header-logo > span {
  display: none;
}

.site-header-logo-en {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-top: 2px;
}

.site-header-nav {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  margin-left: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 2.4rem;
  padding: 0 0.78rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--header-muted);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  background: var(--nav-hover-bg);
  color: #ffffff;
  border-color: rgba(147, 197, 253, 0.18);
}

.site-header-cta { margin-left: var(--space-sm); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  margin-left: auto;
  width: 2.5rem;
  height: 2.5rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-button);
  border: 1px solid var(--header-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-strong);
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.08); }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* 主题切换按钮（圆形图标：dark 显示太阳 / light 显示月亮） */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  margin-left: var(--space-sm);
  border-radius: 50%;
  border: 1px solid var(--header-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--header-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}
.theme-toggle:hover { background: var(--nav-hover-bg); color: var(--header-text); }
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }
.mobile-nav .theme-toggle { margin: var(--space-md) 0 0; }

/* 移动端抽屉 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 4.25rem;
  left: 0;
  right: 0;
  z-index: 99;
  padding: var(--space-md) var(--space-xl) var(--space-xl);
  background: rgba(8, 15, 24, 0.94);
  border-bottom: 1px solid var(--header-border);
  backdrop-filter: blur(26px) saturate(160%);
  -webkit-backdrop-filter: blur(26px) saturate(160%);
  box-shadow: var(--shadow-lg);
}
.mobile-nav.is-open { display: block; }
.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0.25rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--header-muted);
  border-bottom: 1px solid rgba(176, 193, 212, 0.10);
  transition: color 180ms ease;
}
.mobile-nav a:hover,
.mobile-nav a[aria-current="page"] { color: #ffffff; }
.mobile-nav .btn { margin-top: var(--space-md); width: 100%; }

/* ════════════════════════════════════════
 * 通用 primitives
 * ════════════════════════════════════════ */
main { padding-top: 4.25rem; }

.section { padding: var(--space-4xl) 0; }
.section-tight { padding: var(--space-3xl) 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(140, 163, 180, 0.92);
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: rgba(140, 163, 180, 0.5);
}

.section-head { margin-bottom: var(--space-2xl); max-width: 46rem; }
.section-head h2 {
  margin-top: var(--space-sm);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
  line-height: 1.3;
}
.section-head p { margin-top: var(--space-sm); color: var(--ink-soft); font-size: 0.98rem; }

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-xl);
  flex-wrap: wrap;
}
.section-head-row .section-head { margin-bottom: 0; }
.section-head-row .section-link {
  margin-bottom: 0.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--brand-text);
  transition: color 180ms ease, transform 180ms ease;
}
.section-head-row .section-link:hover { color: #ffffff; transform: translateX(2px); }
.section-head-row + * { margin-top: var(--space-2xl); }

/* ── Chip ── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  height: 2rem;
  padding: 0 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--brand-tint-border);
  background: var(--brand-tint-bg);
  color: var(--brand-text);
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.chip:hover { background: rgba(56, 189, 248, 0.16); border-color: rgba(56, 189, 248, 0.42); }
.chip-neutral {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-soft);
}
.chip-warm {
  border-color: rgba(245, 204, 125, 0.32);
  background: rgba(245, 204, 125, 0.10);
  color: var(--accent-warm);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border-radius: var(--radius-button);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.7rem 1.15rem;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease,
    transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}
.btn-primary {
  background: linear-gradient(180deg, var(--brand-primary), var(--brand-secondary));
  color: #052033;
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); filter: brightness(1.05); }
.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line-strong);
  color: var(--ink-strong);
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.09); border-color: rgba(147, 197, 253, 0.32); }
.btn-sm { padding: 0.45rem 0.85rem; font-size: 0.86rem; }

/* ── Glass card ── */
.surface-panel {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: var(--space-xl);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), var(--shadow-md);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}
.surface-panel:hover {
  border-color: var(--line-strong);
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow-lg);
}

/* ── Poster（hero / CTA 深蓝实色岛）── */
.poster-surface {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, #0b1724 0%, #102b45 58%, #11253c 100%);
  padding: var(--space-2xl);
  border: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow-xl);
  color: #f5f9ff;
  overflow: hidden;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.22);
  --ink-soft: rgba(233, 245, 255, 0.72);
  --muted: rgba(207, 218, 229, 0.6);
  /* 品牌 token 局部再声明：poster 深色岛在 light/dark 两主题保持一致 */
  --brand-tint-bg: rgba(56, 189, 248, 0.10);
  --brand-tint-border: rgba(56, 189, 248, 0.25);
  --brand-text: #7dd3fc;
  --accent-warm: #f5cc7d;
}

.hero-glow {
  position: absolute;
  inset: -10%;
  pointer-events: none;
  background:
    radial-gradient(circle at 16% 18%, rgba(56, 189, 248, 0.20), transparent 38%),
    radial-gradient(circle at 78% 14%, rgba(59, 130, 246, 0.16), transparent 42%),
    radial-gradient(circle at 50% 110%, rgba(245, 204, 125, 0.10), transparent 36%);
  z-index: 0;
  filter: blur(2px);
}

/* ════════════════════════════════════════
 * Hero（首页首屏）
 * ════════════════════════════════════════ */
.hero-wrap { padding: var(--space-2xl) 0 var(--space-4xl); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-3xl);
  align-items: center;
  padding: clamp(2rem, 4.5vw, 3.75rem);
}
.hero > :not(.hero-glow) { position: relative; z-index: 1; }

.hero-title {
  margin-top: var(--space-lg);
  font-size: clamp(1.9rem, 4.2vw, 3.15rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: #f5f9ff;
}
.hero-title .accent {
  background: linear-gradient(120deg, #7dd3fc, #38bdf8 55%, #60a5fa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin-top: var(--space-lg);
  max-width: 36rem;
  color: rgba(233, 245, 255, 0.78);
  font-size: 1.02rem;
}

.hero-chip-row {
  margin-top: var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-action-row {
  margin-top: var(--space-xl);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.hero-slogan {
  margin-top: var(--space-xl);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: rgba(245, 204, 125, 0.85);
}
.hero-slogan::before { content: ""; width: 1.25rem; height: 1px; background: rgba(245, 204, 125, 0.5); }

.hero-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.hero-stat-tile {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem 1.05rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(255, 255, 255, 0.04);
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}
.hero-stat-tile:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(56, 189, 248, 0.22);
  transform: translateY(-1px);
}
.hero-stat-value {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #f5f9ff;
  line-height: 1.1;
}
.hero-stat-unit { margin-left: 0.2rem; font-size: 0.78rem; font-weight: 500; opacity: 0.7; }
.hero-stat-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(233, 245, 255, 0.62);
}

/* ════════════════════════════════════════
 * 卡片网格
 * ════════════════════════════════════════ */
.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* 核心能力卡 */
.cap-card { display: flex; flex-direction: column; gap: var(--space-md); }
.cap-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--brand-tint-border);
  background: var(--brand-tint-bg);
  color: var(--brand-text);
}
.cap-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--ink-strong); }
.cap-card p { font-size: 0.92rem; color: var(--ink-soft); flex: 1; }
.cap-card-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.cap-card-tags span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.03);
}
.cap-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--brand-text);
  transition: color 180ms ease, transform 180ms ease;
}
.cap-card-link:hover { color: #ffffff; transform: translateX(2px); }

/* 行业方案卡（tone 色带）*/
.solution-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: calc(var(--space-xl) + 3px);
}
.solution-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--tone, var(--accent-deep));
  opacity: 0.9;
}
.solution-card[data-tone="blue"]  { --tone: #3b82f6; --tone-soft: rgba(59, 130, 246, 0.14); --tone-text: #93c5fd; }
.solution-card[data-tone="cyan"]  { --tone: #22d3ee; --tone-soft: rgba(34, 211, 238, 0.12); --tone-text: #67e8f9; }
.solution-card[data-tone="amber"] { --tone: #f5cc7d; --tone-soft: rgba(245, 204, 125, 0.12); --tone-text: #f5cc7d; }
.solution-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--tone-soft);
  border: 1px solid color-mix(in srgb, var(--tone) 30%, transparent);
  color: var(--tone-text);
}
.solution-card h3 { font-size: 1.12rem; font-weight: 600; color: var(--ink-strong); }
.solution-card .solution-engine {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--tone-text);
}
.solution-card p { font-size: 0.92rem; color: var(--ink-soft); }
.solution-card ul { display: flex; flex-direction: column; gap: 0.45rem; flex: 1; }
.solution-card li {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.solution-card li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--tone);
  flex-shrink: 0;
  transform: translateY(-2px);
}

/* 案例卡 */
.case-card { display: flex; flex-direction: column; gap: var(--space-sm); }
.case-card-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.case-card-meta span {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--brand-tint-border);
  background: var(--brand-tint-bg);
  color: var(--brand-text);
}
.case-card-meta span.tag-region {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}
.case-card h3 { font-size: 1.04rem; font-weight: 600; color: var(--ink-strong); }
.case-card p { font-size: 0.9rem; color: var(--ink-soft); flex: 1; }
.case-card-result {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding-top: var(--space-sm);
  border-top: 1px dashed var(--line);
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.case-card-result strong { color: var(--brand-text); font-weight: 600; }

/* 创新成果 */
.innov-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}
.innov-tile { display: flex; flex-direction: column; gap: 0.5rem; }
.innov-value {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}
.innov-value .unit { font-size: 0.9rem; color: var(--ink-soft); margin-left: 0.25rem; font-weight: 500; }
.innov-tile h3 { font-size: 0.98rem; font-weight: 600; color: var(--ink-strong); }
.innov-tile p { font-size: 0.86rem; color: var(--muted); }

/* ════════════════════════════════════════
 * 资质荣誉 marquee 滚动墙
 * ════════════════════════════════════════ */
.marquee {
  position: relative;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee + .marquee { margin-top: var(--space-md); }
.marquee-track {
  display: flex;
  gap: var(--space-md);
  width: max-content;
  animation: marquee-scroll 46s linear infinite;
}
.marquee-reverse .marquee-track { animation-direction: reverse; animation-duration: 54s; }
.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.honor-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), var(--shadow-sm);
}
.honor-pill svg { color: var(--brand-text); }
.honor-pill .honor-level {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
  border: 1px solid rgba(245, 204, 125, 0.3);
  border-radius: var(--radius-pill);
  padding: 0.12rem 0.45rem;
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; flex-wrap: wrap; width: auto; }
  .marquee { mask-image: none; -webkit-mask-image: none; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* 合作生态文字 logo 墙 */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
}
.partner-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 5.5rem;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  text-align: center;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}
.partner-tile:hover {
  border-color: var(--brand-tint-border);
  background: rgba(56, 189, 248, 0.05);
  transform: translateY(-1px);
}
.partner-tile strong { font-size: 0.95rem; font-weight: 600; color: var(--ink); letter-spacing: 0.02em; }
.partner-tile span {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ════════════════════════════════════════
 * 咨询转化（CTA + 表单）
 * ════════════════════════════════════════ */
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-3xl);
  padding: clamp(2rem, 4vw, 3.25rem);
}
.contact-panel > * { position: relative; z-index: 1; }
.contact-info h2 {
  margin-top: var(--space-md);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 700;
  color: #f5f9ff;
  line-height: 1.3;
}
.contact-info > p { margin-top: var(--space-md); color: rgba(233, 245, 255, 0.75); font-size: 0.95rem; }

.contact-list { margin-top: var(--space-xl); display: flex; flex-direction: column; gap: var(--space-md); }
.contact-list li { display: flex; gap: 0.75rem; align-items: flex-start; font-size: 0.92rem; color: rgba(233, 245, 255, 0.82); }
.contact-list svg { color: var(--brand-text); margin-top: 2px; }
.contact-list .label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(233, 245, 255, 0.5);
  margin-bottom: 0.2rem;
}

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field-full { grid-column: 1 / -1; }
.form-field label { font-size: 0.85rem; font-weight: 500; color: rgba(233, 245, 255, 0.85); }
.form-field label .req { color: var(--brand-text); }

.input {
  width: 100%;
  border-radius: var(--radius-button);
  border: 1px solid var(--line);
  background: var(--input-bg);
  color: var(--ink-strong);
  padding: 0.7rem 0.9rem;
  font: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}
.input:focus {
  border-color: rgba(147, 197, 253, 0.32);
  box-shadow: var(--shadow-focus);
  background: var(--input-bg-focus);
}
.input::placeholder { color: var(--muted); }
select.input { appearance: none; }
.select-wrap { position: relative; }
.select-wrap::after {
  content: "";
  position: absolute;
  right: 0.9rem;
  top: 50%;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 1.8px solid var(--muted);
  border-bottom: 1.8px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
.textarea { resize: vertical; min-height: 6.5rem; line-height: 1.7; }
.form-hint { font-size: 0.78rem; color: rgba(233, 245, 255, 0.5); }
.form-success {
  display: none;
  margin-top: var(--space-md);
  padding: 0.8rem 1rem;
  border-radius: var(--radius-button);
  border: 1px solid rgba(56, 189, 248, 0.35);
  background: rgba(56, 189, 248, 0.10);
  color: var(--brand-text);
  font-size: 0.9rem;
}
.form-success.is-visible { display: flex; align-items: center; gap: 0.5rem; }

/* ════════════════════════════════════════
 * 内页 hero（poster 窄版）
 * ════════════════════════════════════════ */
.page-hero-wrap { padding: var(--space-2xl) 0 var(--space-md); }
.page-hero { padding: clamp(2rem, 4vw, 3rem); }
.page-hero > :not(.hero-glow) { position: relative; z-index: 1; }
.page-hero h1 {
  margin-top: var(--space-md);
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #f5f9ff;
  line-height: 1.25;
}
.page-hero p {
  margin-top: var(--space-md);
  max-width: 44rem;
  color: rgba(233, 245, 255, 0.75);
  font-size: 1rem;
}
.page-hero .hero-chip-row { margin-top: var(--space-lg); }
.page-hero .hero-action-row { margin-top: var(--space-lg); }

/* ════════════════════════════════════════
 * 能力详情块（capabilities）
 * ════════════════════════════════════════ */
.cap-detail {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--space-2xl);
  padding: var(--space-2xl);
}
.cap-detail-head { display: flex; flex-direction: column; gap: var(--space-md); }
.cap-detail-head h2 { font-size: 1.45rem; font-weight: 700; color: var(--ink-strong); }
.cap-detail-head p { font-size: 0.94rem; color: var(--ink-soft); }
.cap-detail-body { display: flex; flex-direction: column; gap: var(--space-lg); }

.kv-block h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(140, 163, 180, 0.92);
  margin-bottom: 0.6rem;
}
.kv-block h3::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.kv-block p { font-size: 0.92rem; color: var(--ink-soft); }
.kv-block ul { display: flex; flex-direction: column; gap: 0.45rem; }
.kv-block li { display: flex; gap: 0.55rem; align-items: baseline; font-size: 0.9rem; color: var(--ink-soft); }
.kv-block li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--brand-primary);
  flex-shrink: 0;
  transform: translateY(-2px);
}
.kv-inline-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }

/* 架构分层图（纯 CSS）*/
.arch-stack { display: flex; flex-direction: column; gap: 0.5rem; }
.arch-layer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--brand-tint-border);
  background: var(--brand-tint-bg);
  font-size: 0.86rem;
  color: var(--ink);
}
.arch-layer .arch-tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-text);
  min-width: 5.5rem;
}
.arch-layer:nth-child(2) { background: rgba(56, 189, 248, 0.07); }
.arch-layer:nth-child(3) { background: rgba(56, 189, 248, 0.05); }
.arch-layer:nth-child(4) { background: rgba(56, 189, 248, 0.03); }

/* ════════════════════════════════════════
 * 解决方案页流程条 / 价值区
 * ════════════════════════════════════════ */
/* tone 色带（任意面板顶部 3px 色条）*/
.tone-band { overflow: hidden; }
.tone-band::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--tone, var(--accent-deep));
  opacity: 0.9;
}
.tone-band[data-tone="blue"]  { --tone: #3b82f6; --tone-soft: rgba(59, 130, 246, 0.14); --tone-text: #93c5fd; }
.tone-band[data-tone="cyan"]  { --tone: #22d3ee; --tone-soft: rgba(34, 211, 238, 0.12); --tone-text: #67e8f9; }
.tone-band[data-tone="amber"] { --tone: #f5cc7d; --tone-soft: rgba(245, 204, 125, 0.12); --tone-text: #f5cc7d; }
.tone-band .solution-engine {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--tone-text, var(--brand-text));
}

.flow-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-md); }
.flow-step {
  position: relative;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.flow-step .flow-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--brand-text);
}
.flow-step h4 { margin-top: 0.5rem; font-size: 0.96rem; font-weight: 600; color: var(--ink-strong); }
.flow-step p { margin-top: 0.4rem; font-size: 0.84rem; color: var(--muted); }

/* ════════════════════════════════════════
 * 筛选器（cases / news）
 * ════════════════════════════════════════ */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-2xl);
  padding: var(--space-lg) var(--space-xl);
}
.filter-group { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.filter-group-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.25rem;
}
.filter-pill {
  display: inline-flex;
  align-items: center;
  height: 2rem;
  padding: 0 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}
.filter-pill:hover { border-color: var(--brand-tint-border); color: var(--brand-text); }
.filter-pill.is-active {
  border-color: rgba(56, 189, 248, 0.42);
  background: var(--brand-tint-bg);
  color: var(--brand-text);
}
.filter-empty {
  display: none;
  padding: var(--space-2xl);
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}
.filter-empty.is-visible { display: block; }
[data-filter-item].is-hidden { display: none; }

/* 动态与成果列表 */
.news-item {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr) auto;
  gap: var(--space-lg);
  align-items: baseline;
  padding: var(--space-lg) var(--space-xl);
}
.news-item .news-year {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--brand-text);
  letter-spacing: 0.04em;
}
.news-item h3 { font-size: 0.98rem; font-weight: 600; color: var(--ink-strong); line-height: 1.5; }
.news-item p { margin-top: 0.3rem; font-size: 0.86rem; color: var(--muted); }
.news-type-tag {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  padding: 0.22rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--brand-tint-border);
  background: var(--brand-tint-bg);
  color: var(--brand-text);
  white-space: nowrap;
}
.news-list { display: flex; flex-direction: column; gap: var(--space-sm); }

/* ════════════════════════════════════════
 * 发展历程时间轴（about）
 * ════════════════════════════════════════ */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0.4rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.55), rgba(59, 130, 246, 0.28) 60%, rgba(176, 193, 212, 0.12));
}
.timeline-item { position: relative; padding-bottom: var(--space-2xl); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.3rem;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: #0b1724;
  border: 2px solid var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.12);
}
.timeline-year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  color: var(--brand-text);
}
.timeline-item h3 { margin-top: 0.35rem; font-size: 1.05rem; font-weight: 600; color: var(--ink-strong); }
.timeline-item p { margin-top: 0.4rem; font-size: 0.9rem; color: var(--ink-soft); max-width: 40rem; }

/* 企业文化 / 价值观 */
.value-tile { display: flex; flex-direction: column; gap: 0.5rem; }
.value-tile .value-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--brand-text);
}
.value-tile h3 { font-size: 1.02rem; font-weight: 600; color: var(--ink-strong); }
.value-tile p { font-size: 0.88rem; color: var(--muted); }

/* ════════════════════════════════════════
 * 招聘（careers）
 * ════════════════════════════════════════ */
.job-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-xl);
}
.job-item-main h3 { font-size: 1rem; font-weight: 600; color: var(--ink-strong); }
.job-item-main p { margin-top: 0.3rem; font-size: 0.85rem; color: var(--muted); }
.job-item-meta { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.55rem; }
.job-item-meta span {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  padding: 0.18rem 0.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  color: var(--muted);
}

/* ════════════════════════════════════════
 * 页脚
 * ════════════════════════════════════════ */
.site-footer {
  margin-top: var(--space-3xl);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(6, 13, 22, 0.4), rgba(5, 11, 19, 0.85));
  padding: var(--space-4xl) 0 var(--space-2xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2.4fr));
  gap: var(--space-2xl);
}
.footer-brand .site-header-logo-mark {
  width: 152px;
  max-width: 100%;
  height: auto;
}
.footer-brand p { margin-top: var(--space-md); font-size: 0.88rem; color: var(--muted); max-width: 20rem; }
.footer-col h3 {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(140, 163, 180, 0.92);
  margin-bottom: var(--space-md);
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.55rem; }
.footer-col a, .footer-col li { font-size: 0.88rem; color: var(--ink-soft); transition: color 180ms ease; }
.footer-col a:hover { color: #ffffff; }
.footer-col .footer-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 0.15rem;
}
.footer-bottom {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(176, 193, 212, 0.10);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: var(--muted);
}
.footer-bottom-links { display: flex; flex-wrap: wrap; gap: var(--space-lg); }
.footer-bottom-links a { transition: color 180ms ease; }
.footer-bottom-links a:hover { color: var(--ink-strong); }

/* ════════════════════════════════════════
 * 滚动淡入
 * ════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 480ms ease, transform 480ms ease;
}
.reveal.is-revealed { opacity: 1; transform: none; }

/* ════════════════════════════════════════
 * Responsive
 * ════════════════════════════════════════ */
@media (max-width: 1279px) {
  .nav-link { padding: 0 0.6rem; font-size: 0.86rem; }
}

@media (max-width: 1023px) {
  .site-header-nav, .site-header-cta { display: none; }
  .site-header .theme-toggle { margin-left: auto; }
  .nav-toggle { display: inline-flex; margin-left: 0; }
  .hero { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .innov-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .partner-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .contact-panel { grid-template-columns: 1fr; }
  .cap-detail { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 767px) {
  .container { padding-inline: var(--space-md); }
  .section { padding: var(--space-3xl) 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero { padding: var(--space-xl); }
  .hero-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-stat-value { font-size: 1.3rem; }
  .poster-surface, .surface-panel { padding: var(--space-lg); }
  .contact-panel, .page-hero, .hero { padding: var(--space-xl) var(--space-lg); }
  .form-grid { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .news-item .news-type-tag { justify-self: start; }
  .job-item { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 639px) {
  .grid-4, .innov-strip { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flow-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 1.75rem; }
}

/* ════════════════════════════════════════════════════════
 * Light theme — shukeyun 门户同款浅色色板
 * 触发：<html data-theme="light">；默认（无属性）= dark
 * token 对齐 shukeyun-portal globals.css 的 [data-theme="light"]
 * poster-surface（hero / CTA 深蓝岛）两主题保持深色不变
 * ════════════════════════════════════════════════════════ */
[data-theme="light"] {
  color-scheme: light;

  /* Backgrounds */
  --bg-top: #f6fbff;
  --bg-bottom: #eef7f6;
  --page-fg: #0b1724;
  --page-glow-a: rgba(37, 99, 235, 0.06);
  --page-glow-b: rgba(8, 145, 178, 0.06);

  /* Surfaces */
  --surface: rgba(255, 255, 255, 0.94);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --surface-dark: linear-gradient(140deg, #0b1724, #102b45 58%, #123b42);

  /* Text */
  --ink: #0b1724;
  --ink-strong: #0b1724;
  --ink-soft: #44566a;
  --muted: #5b6e87;

  /* Borders */
  --line: rgba(12, 28, 44, 0.10);
  --line-strong: rgba(12, 28, 44, 0.18);

  /* Brand */
  --accent-deep: #0f2a52;
  --accent-warm: #b7791f;
  --brand-primary: #0f2a52;
  --brand-secondary: #0891b2;
  --brand-accent: #2563eb;
  --brand-tint-bg: rgba(37, 99, 235, 0.08);
  --brand-tint-border: rgba(37, 99, 235, 0.22);
  --brand-text: #0f2a52;

  /* Header */
  --header-bg: rgba(255, 255, 255, 0.88);
  --header-border: rgba(12, 28, 44, 0.10);
  --header-text: #0b1724;
  --header-muted: #44566a;
  --nav-hover-bg: rgba(15, 42, 82, 0.06);

  /* Shadow（shukeyun 同款浅阴影） */
  --shadow-sm: 0 8px 18px rgba(12, 28, 44, 0.06);
  --shadow-md: 0 12px 28px rgba(12, 28, 44, 0.07);
  --shadow-lg: 0 22px 44px rgba(12, 28, 44, 0.10);
  --shadow-xl: 0 30px 60px rgba(12, 28, 44, 0.14);
  --shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.18);

  /* Input */
  --input-bg: #ffffff;
  --input-bg-focus: #fafcfd;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 14% 16%, var(--page-glow-a), transparent 36%),
    radial-gradient(circle at 84% 8%, var(--page-glow-b), transparent 32%),
    linear-gradient(180deg, #f6fbff 0%, #ffffff 44%, #eef7f6 100%);
  background-color: var(--bg-top);
}
[data-theme="light"] body::before { background: rgba(37, 99, 235, 0.05); }
[data-theme="light"] body::after  { background: rgba(8, 145, 178, 0.05); }

[data-theme="light"] ::selection { background: rgba(37, 99, 235, 0.22); color: #0b1724; }

/* logo：浅色主题保留原始蓝色（用户审稿 2026-07-05） */
[data-theme="light"] .site-header-logo-mark {
  filter: none;
}

/* ── Header / 导航 ── */
[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link[aria-current="page"] {
  color: #0b1724;
  border-color: rgba(15, 42, 82, 0.18);
}
[data-theme="light"] .nav-toggle { background: rgba(12, 28, 44, 0.05); }
[data-theme="light"] .nav-toggle:hover { background: rgba(12, 28, 44, 0.09); }
[data-theme="light"] .theme-toggle { background: rgba(12, 28, 44, 0.04); }

/* 移动端抽屉 */
[data-theme="light"] .mobile-nav {
  background: rgba(255, 255, 255, 0.94);
}
[data-theme="light"] .mobile-nav a { border-bottom-color: rgba(12, 28, 44, 0.08); }
[data-theme="light"] .mobile-nav a:hover,
[data-theme="light"] .mobile-nav a[aria-current="page"] { color: #0b1724; }

/* ── 通用文字 / 链接 ── */
[data-theme="light"] .eyebrow { color: var(--muted); }
[data-theme="light"] .eyebrow::before { background: rgba(91, 110, 135, 0.5); }
[data-theme="light"] .poster-surface .eyebrow { color: rgba(233, 245, 255, 0.74); }
[data-theme="light"] .poster-surface .eyebrow::before { background: rgba(233, 245, 255, 0.4); }
[data-theme="light"] .section-head-row .section-link:hover { color: #0b1724; }
[data-theme="light"] .cap-card-link:hover { color: #0f2a52; }
[data-theme="light"] .kv-block h3 { color: var(--muted); }

/* ── Chips ── */
[data-theme="light"] .chip:hover { background: rgba(37, 99, 235, 0.14); border-color: rgba(37, 99, 235, 0.40); }
[data-theme="light"] .chip-neutral { background: rgba(12, 28, 44, 0.04); }
[data-theme="light"] .chip-warm {
  border-color: rgba(183, 121, 31, 0.32);
  background: rgba(183, 121, 31, 0.08);
  color: #b7791f;
}

/* ── Buttons ──
 * btn-primary 在 light/dark 两主题保持一致：sky 渐变 + 深字（shukeyun 口径，
 * 深 navy 按钮在深色 poster 内看不清，统一 sky-gradient 最干净）。
 * light token 把 --brand-primary 改成了 navy，故此处显式钉回 sky 渐变。 */
[data-theme="light"] .btn-primary {
  background: linear-gradient(180deg, #38bdf8, #0ea5e9);
  color: #052033;
}
[data-theme="light"] .btn-secondary {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(12, 28, 44, 0.22);
  color: #0b1724;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 4px 14px rgba(12, 28, 44, 0.10);
}
[data-theme="light"] .btn-secondary:hover {
  background: #ffffff;
  border-color: rgba(15, 42, 82, 0.42);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.7) inset,
    0 6px 18px rgba(12, 28, 44, 0.14);
}

/* ── 卡片 / 标签内的硬编码白膜 → 深墨tint ── */
[data-theme="light"] .cap-card-tags span { background: rgba(12, 28, 44, 0.03); }
[data-theme="light"] .case-card-meta span.tag-region { background: rgba(12, 28, 44, 0.04); }
[data-theme="light"] .partner-tile { background: rgba(12, 28, 44, 0.03); }
[data-theme="light"] .partner-tile:hover { background: rgba(37, 99, 235, 0.06); }
[data-theme="light"] .flow-step { background: rgba(12, 28, 44, 0.03); }

/* ── 方案卡 / tone 色带：亮色系 tone 文字在白底不可读 → 加深 ── */
[data-theme="light"] .solution-card[data-tone="blue"],
[data-theme="light"] .tone-band[data-tone="blue"]  { --tone-text: #2563eb; }
[data-theme="light"] .solution-card[data-tone="cyan"],
[data-theme="light"] .tone-band[data-tone="cyan"]  { --tone-text: #0891b2; }
[data-theme="light"] .solution-card[data-tone="amber"],
[data-theme="light"] .tone-band[data-tone="amber"] { --tone: #d99a2b; --tone-soft: rgba(183, 121, 31, 0.10); --tone-text: #b7791f; }

/* ── 荣誉滚动墙 ── */
[data-theme="light"] .honor-pill {
  box-shadow: var(--shadow-sm);
}
[data-theme="light"] .honor-pill .honor-level { border-color: rgba(183, 121, 31, 0.35); }

/* ── 架构分层图 ── */
[data-theme="light"] .arch-layer:nth-child(2) { background: rgba(37, 99, 235, 0.07); }
[data-theme="light"] .arch-layer:nth-child(3) { background: rgba(37, 99, 235, 0.05); }
[data-theme="light"] .arch-layer:nth-child(4) { background: rgba(37, 99, 235, 0.03); }

/* ── 筛选器 ── */
[data-theme="light"] .filter-pill { background: rgba(12, 28, 44, 0.04); }
[data-theme="light"] .filter-pill.is-active { border-color: rgba(37, 99, 235, 0.42); }

/* ── 时间轴 ── */
[data-theme="light"] .timeline::before {
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.45), rgba(15, 42, 82, 0.25) 60%, rgba(12, 28, 44, 0.10));
}
[data-theme="light"] .timeline-item::before {
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(15, 42, 82, 0.10);
}

/* ── 输入框（白底；含 poster 内表单，白底输入框在深色岛上同样成立）── */
[data-theme="light"] .input {
  border-color: rgba(12, 28, 44, 0.18);
  background: var(--input-bg);
  color: #0b1724;
}
[data-theme="light"] .input:focus {
  border-color: rgba(37, 99, 235, 0.4);
  background: var(--input-bg-focus);
}
[data-theme="light"] .input::placeholder { color: #6b7f96; }
[data-theme="light"] .select-wrap::after {
  border-right-color: #5b6e87;
  border-bottom-color: #5b6e87;
}

/* ── 页脚 ── */
[data-theme="light"] .site-footer {
  background: linear-gradient(180deg, rgba(246, 251, 255, 0.4), rgba(226, 238, 244, 0.9));
}
[data-theme="light"] .footer-col h3 { color: var(--muted); }
[data-theme="light"] .footer-col a:hover { color: #0b1724; }
[data-theme="light"] .footer-bottom { border-top-color: rgba(12, 28, 44, 0.08); }

/* ════════════════════════════════════════════════════════
 * Poster scope 再声明（在 light 覆盖之后声明 → 同特异度后者胜）
 * poster 深色岛两主题一致，防止 light 的白底组件规则渗入
 * ════════════════════════════════════════════════════════ */
.poster-surface .btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line-strong);
  color: #f5f9ff;
  box-shadow: none;
}
.poster-surface .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(147, 197, 253, 0.32);
  transform: none;
}
.poster-surface .chip:hover {
  background: rgba(56, 189, 248, 0.16);
  border-color: rgba(56, 189, 248, 0.42);
}
.poster-surface .chip-warm {
  border-color: rgba(245, 204, 125, 0.32);
  background: rgba(245, 204, 125, 0.10);
  color: #f5cc7d;
}
.poster-surface .chip-neutral {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink-soft);
}

/* ════════════════════════════════════════
 * Light 主题下 poster 深色岛整体减淡:
 * 仍保持 navy 白字,但明度上调一档(用户审稿 2026-07-05)
 * ════════════════════════════════════════ */
[data-theme="light"] .poster-surface {
  background: linear-gradient(140deg, #1d3a5f, #2a547f 58%, #264a71);
  border-color: rgba(148, 190, 232, 0.28);
}
[data-theme="light"] .hero-glow {
  background:
    radial-gradient(circle at 16% 18%, rgba(125, 211, 252, 0.24), transparent 38%),
    radial-gradient(circle at 78% 14%, rgba(96, 165, 250, 0.18), transparent 42%),
    radial-gradient(circle at 50% 110%, rgba(245, 204, 125, 0.12), transparent 36%);
}