/* =====================================================
   宏奕智能 · 官网样式 v15 — 深色科技风统一设计系统
   Tokens → Base → Background → Nav → Ticker → Hero
   → Sections → Cards → About → Footer → Modal → Motion
   ===================================================== */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* 8pt 间距系统 */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  --space-12: 120px;

  /* 字号阶梯 */
  --font-xs:  12px;
  --font-sm:  14px;
  --font-md:  15px;
  --font-lg:  17px;
  --font-xl:  20px;
  --font-2xl: 24px;
  --font-3xl: 32px;
  --font-4xl: 46px;
  --font-5xl: 56px;

  /* 色板：深海军蓝 + 电光蓝 + 青色点缀 */
  --bg: #0b1220;
  --bg-deep: #070d18;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(148, 163, 184, 0.14);
  --border-bright: rgba(96, 165, 250, 0.35);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --primary: #3b82f6;
  --primary-soft: #60a5fa;
  --primary-deep: #1d4ed8;
  --accent: #22d3ee;
  --gradient-brand: linear-gradient(135deg, #60a5fa 0%, #3b82f6 55%, #22d3ee 100%);

  /* 圆角 / 阴影 */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 32px rgba(2, 6, 17, 0.5);
  --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.25), 0 8px 40px rgba(59, 130, 246, 0.18);

  /* 布局 */
  --nav-height: 72px;
  --max-width: 1160px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 2. BASE ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.75;
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
/* iOS 上仅 body 裁剪会失效，根元素也要裁，防止绝对定位元素撑宽文档 */
html { overflow-x: clip; }

a { color: var(--primary-soft); }
img { max-width: 100%; }
::selection { background: rgba(59, 130, 246, 0.35); color: #fff; }

/* ---------- 3. BACKGROUND LAYERS ---------- */
/* 顶部品牌光晕 + 网格 + 底部渐隐，纯 CSS 不依赖壁纸图 */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 480px at 50% -120px, rgba(59, 130, 246, 0.16), transparent 70%),
    radial-gradient(700px 420px at 85% 12%, rgba(34, 211, 238, 0.07), transparent 70%),
    radial-gradient(700px 420px at 10% 30%, rgba(29, 78, 216, 0.08), transparent 70%);
}
.bg-decor::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 30%, transparent 100%);
}

/* ---------- 4. NAVIGATION ---------- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);
  background: rgba(7, 13, 24, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid rgba(148, 163, 184, 0.10);
  transition: background 300ms var(--ease-in-out);
}
nav.nav-scrolled { background: rgba(7, 13, 24, 0.92); }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 1px;
  white-space: nowrap;
}
.logo img { height: 34px; width: auto; border-radius: 8px; }
.logo span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links { display: flex; align-items: center; margin-left: auto; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: var(--space-4);
  font-size: var(--font-md);
  font-weight: 500;
  padding: 6px 0;
  transition: color 200ms var(--ease-out);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:focus-visible {
  outline: 2px solid var(--primary-soft);
  outline-offset: 4px;
  border-radius: 4px;
}

.recruit-btn,
.contact-btn {
  margin-left: var(--space-4);
  padding: 9px 22px;
  border-radius: 999px;
  font-size: var(--font-md);
  font-weight: 600;
  border: none;
  cursor: pointer;
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35);
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}
.recruit-btn:hover,
.contact-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 26px rgba(59, 130, 246, 0.5);
}
.recruit-btn:focus-visible,
.contact-btn:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 4px; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 250ms var(--ease-out), opacity 250ms;
}
.nav-hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav-hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ---------- 5. NEWS TICKER ---------- */
.news-ticker-wrap {
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  height: 40px;
  z-index: 90;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: rgba(7, 13, 24, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}
.ticker-label {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 16px;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(34, 211, 238, 0.85));
  color: #fff;
  font-size: var(--font-xs);
  font-weight: 700;
  letter-spacing: 1.5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.ticker-track { flex: 1; overflow: hidden; position: relative; }
.ticker-list {
  display: flex;
  align-items: center;
  width: max-content;
  animation: ticker-scroll 32s linear infinite;
}
.ticker-list:hover { animation-play-state: paused; }
@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-item {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
  transition: color 200ms;
}
.ticker-item:hover { color: var(--primary-soft); }
.ticker-item .ticker-tag {
  background: var(--primary-deep);
  color: #fff;
  font-size: 10px;
  padding: 1px 8px;
  border-radius: 999px;
  margin-right: 8px;
  flex-shrink: 0;
}
.ticker-item .ticker-tag.ai    { background: #7c3aed; }
.ticker-item .ticker-tag.tech  { background: #0891b2; }
.ticker-item .ticker-tag.trend { background: #ea580c; }
.ticker-dot {
  width: 4px; height: 4px;
  background: var(--accent);
  border-radius: 50%;
  margin: 0 14px;
  flex-shrink: 0;
}
.ticker-item:focus { outline: 2px solid var(--primary-soft); outline-offset: -2px; }

/* ---------- 6. HERO ---------- */
.hero {
  position: relative;
  padding: calc(var(--nav-height) + 40px + var(--space-10)) var(--space-3) var(--space-12);
  text-align: center;
}
/* 数字雨画布：垫在内容下方，边缘渐隐 */
#matrixRain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.42;
  pointer-events: none;
  mask-image: linear-gradient(180deg, transparent 0%, black 12%, black 82%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, black 12%, black 82%, transparent 100%);
}
.hero > *:not(#matrixRain) { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-bright);
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-soft);
  font-size: var(--font-sm);
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: var(--space-4);
  animation: fadeUp 700ms var(--ease-out) both;
}
.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse-dot 2.4s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}
.hero-logo { height: 96px; width: auto; margin-bottom: var(--space-4); border-radius: 16px; animation: fadeUp 700ms var(--ease-out) both; }
.hero h1 {
  font-size: clamp(32px, 5vw, var(--font-5xl));
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.25;
  margin-bottom: var(--space-3);
  animation: fadeUp 700ms 80ms var(--ease-out) both;
}
.hero h1 .grad {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(15px, 2vw, var(--font-lg));
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto var(--space-5);
  line-height: 1.9;
  animation: fadeUp 700ms 160ms var(--ease-out) both;
}
.hero-tags {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
  animation: fadeUp 700ms 240ms var(--ease-out) both;
}
.tag {
  padding: 8px 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  font-size: var(--font-sm);
  transition: border-color 200ms var(--ease-out), color 200ms var(--ease-out);
}
.tag:hover { border-color: var(--border-bright); color: var(--text); }
.tag strong { color: var(--primary-soft); font-weight: 700; }

.hero-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeUp 700ms 320ms var(--ease-out) both;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 999px;
  font-size: var(--font-md);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out), background 200ms var(--ease-out);
}
.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 6px 26px rgba(59, 130, 246, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 36px rgba(59, 130, 246, 0.55); }
.btn-ghost {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--border-bright); background: var(--surface-hover); }
.btn:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; }

/* ---------- 7. SECTIONS ---------- */
main { position: relative; z-index: 1; }
.section { padding: var(--space-12) var(--space-3); max-width: var(--max-width); margin: 0 auto; }
.section.bg-light { max-width: none; background: linear-gradient(180deg, transparent, rgba(59, 130, 246, 0.045) 30%, rgba(59, 130, 246, 0.045) 70%, transparent); }
.section.bg-light > * { max-width: var(--max-width); margin-left: auto; margin-right: auto; }

.section-title { text-align: center; margin-bottom: var(--space-8); }
.section-title .eyebrow {
  display: inline-block;
  font-size: var(--font-xs);
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.section-title h2 { font-size: clamp(26px, 3.4vw, var(--font-3xl)); font-weight: 700; letter-spacing: 1px; }
.section-title .line {
  width: 56px; height: 3px;
  background: var(--gradient-brand);
  margin: var(--space-3) auto 0;
  border-radius: 2px;
}
.section-title p { color: var(--text-muted); margin-top: var(--space-2); font-size: var(--font-md); }

/* ---------- 8. CARDS ---------- */
.capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}
.cap-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-4);
  transition: transform 260ms var(--ease-out), border-color 260ms var(--ease-out), background 260ms var(--ease-out), box-shadow 260ms var(--ease-out);
}
.cap-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-bright);
  background: var(--surface-hover);
  box-shadow: var(--shadow-glow);
}
.cap-card:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }

.cap-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 14px;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(96, 165, 250, 0.28);
}
.cap-icon svg { width: 26px; height: 26px; stroke: var(--primary-soft); }
.cap-card h3 { font-size: var(--font-lg); font-weight: 700; margin-bottom: 10px; }
.cap-card p { font-size: var(--font-sm); color: var(--text-muted); line-height: 1.8; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: transform 260ms var(--ease-out), border-color 260ms var(--ease-out), background 260ms var(--ease-out);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-bright);
  background: var(--surface-hover);
}
.service-card .svc-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.service-card .svc-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.14), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(96, 165, 250, 0.24);
  flex-shrink: 0;
}
.service-card .svc-ico svg { width: 21px; height: 21px; stroke: var(--primary-soft); }
.service-card h3 { font-size: var(--font-lg); font-weight: 700; }
.service-card p { font-size: var(--font-sm); color: var(--text-muted); }

.data-types {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: wrap;
}
.data-type {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 148px;
  padding: var(--space-4) var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform 240ms var(--ease-out), border-color 240ms var(--ease-out), background 240ms var(--ease-out);
}
.data-type:hover { transform: translateY(-4px); border-color: var(--border-bright); background: var(--surface-hover); }
.data-type .dt-ico svg { width: 30px; height: 30px; stroke: var(--primary-soft); }
.data-type .label { font-size: var(--font-sm); font-weight: 600; color: var(--text); }

/* ---------- 9. ABOUT / STATS ---------- */
.about-content {
  max-width: 860px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.about-content p { font-size: var(--font-md); color: var(--text-muted); margin-bottom: var(--space-3); }
.about-content p:last-of-type { margin-bottom: 0; }
.about-content strong { color: var(--primary-soft); font-weight: 600; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.stat {
  text-align: center;
  padding: var(--space-3) var(--space-2);
  background: rgba(59, 130, 246, 0.06);
  border: 1px solid rgba(96, 165, 250, 0.18);
  border-radius: var(--radius-md);
}
.stat .num {
  font-size: var(--font-2xl);
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.5px;
}
.stat .desc { font-size: var(--font-xs); color: var(--text-muted); margin-top: 4px; letter-spacing: 1px; }

/* ---------- 10. FOOTER ---------- */
footer {
  background: var(--bg-deep);
  border-top: 1px solid rgba(148, 163, 184, 0.10);
  color: var(--text-faint);
  text-align: center;
  padding: var(--space-5) var(--space-3);
  font-size: var(--font-sm);
}
footer .beian { margin-top: 6px; font-size: var(--font-xs); letter-spacing: 0.5px; }
footer .beian a { border-bottom: none; color: var(--text-faint); }
footer .beian a:hover { color: var(--text-muted); }
footer span { color: var(--primary-soft); }
footer a {
  color: var(--primary-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(96, 165, 250, 0.35);
  padding-bottom: 1px;
  transition: color 200ms, border-color 200ms;
}
footer a:hover { color: #fff; border-color: #fff; }
footer a:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; border-radius: 2px; }

/* ---------- 11. MODALS ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 17, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 999;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 300ms var(--ease-in-out), visibility 300ms var(--ease-in-out);
  padding: var(--space-3);
}
.modal-overlay.show { display: flex; opacity: 1; visibility: visible; }
.modal {
  background: #101a2e;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  max-width: 520px;
  width: 100%;
  max-height: 86vh;
  overflow-y: auto;
  padding: var(--space-5);
  position: relative;
  box-shadow: 0 24px 80px rgba(2, 6, 17, 0.7), 0 0 60px rgba(59, 130, 246, 0.10);
  transform: scale(0.96) translateY(8px);
  transition: transform 300ms var(--ease-out);
}
.modal-overlay.show .modal { transform: scale(1) translateY(0); }

.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-faint);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  line-height: 1;
  transition: color 200ms, border-color 200ms;
}
.modal-close:hover { color: var(--text); border-color: var(--border-bright); }
.modal-close:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.modal h2 { font-size: var(--font-2xl); color: var(--text); margin-bottom: var(--space-3); letter-spacing: 1px; }
.modal .tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: var(--space-3); }
.modal .tag-item {
  background: rgba(59, 130, 246, 0.10);
  color: var(--primary-soft);
  padding: 4px 14px;
  border-radius: 999px;
  font-size: var(--font-sm);
  border: 1px solid rgba(96, 165, 250, 0.28);
}
.modal .contact-channels,
.modal .contact-address {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  margin: var(--space-2) 0;
}
.modal .contact-channels h3,
.modal .contact-address h3 {
  font-size: var(--font-md);
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.modal .phones {
  display: flex; flex-direction: column; gap: 6px;
  margin: var(--space-2) 0;
}
.modal .phones .phone-item {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px;
  background: rgba(59, 130, 246, 0.10);
  border: 1px solid rgba(96, 165, 250, 0.24);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-md);
  color: var(--text);
  letter-spacing: 0.5px;
  text-decoration: none;
  cursor: pointer;
  transition: background 200ms, border-color 200ms;
}
.modal .phones .phone-item:hover {
  background: rgba(59, 130, 246, 0.18);
  border-color: var(--border-bright);
}
.modal a[href^="mailto:"] { color: var(--primary-soft); }
.modal .info-line { font-size: var(--font-md); color: var(--text-muted); margin-bottom: 8px; }
.modal .info-line strong { color: var(--text); }
.modal .cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--gradient-brand);
  color: #fff;
  text-align: center;
  padding: 13px 20px;
  border-radius: var(--radius-md);
  font-size: var(--font-md);
  font-weight: 700;
  margin-top: var(--space-3);
  cursor: pointer;
  border: none;
  width: 100%;
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.35);
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}
.modal .cta:hover { transform: translateY(-1px); box-shadow: 0 9px 32px rgba(59, 130, 246, 0.5); }
.modal .cta:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; }
.modal .contact-actions .cta { flex: 1; width: auto; margin-top: var(--space-3); }
.modal .source-note { font-size: var(--font-xs); color: var(--text-faint); margin-top: var(--space-2); }

/* ---------- 12. SKIP LINK / MOTION ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--primary-deep);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  font-weight: 600;
  z-index: 9999;
  transition: top 200ms var(--ease-out);
}
.skip-link:focus { top: 0; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .animate-on-scroll { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- 13b. WORK SCENES CAROUSEL ---------- */
.works {
  padding: var(--space-10) var(--space-3);
  /* 两侧缩小图会伸出屏幕，区块自身裁剪，杜绝横向溢出 */
  overflow-x: hidden;
  overflow-x: clip;
}
.wc-wrap {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
}
.wc-stage {
  position: relative;
  height: 470px;
}
.wc-item {
  position: absolute;
  top: 0;
  left: 50%;
  width: 620px;
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: transform 600ms var(--ease-out), opacity 600ms var(--ease-out), border-color 400ms, box-shadow 400ms;
}
.wc-item img {
  display: block;
  width: 100%;
  height: 350px;
  object-fit: cover;
}
.wc-item figcaption {
  padding: 15px 22px;
  font-size: var(--font-md);
  font-weight: 700;
  color: var(--text);
  text-align: center;
  letter-spacing: 2px;
}
/* 三态：当前放大居中，两侧缩小垫底 */
.wc-item.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 3;
  transform: translateX(-50%) scale(1);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-glow);
}
.wc-item.prev,
.wc-item.next {
  opacity: 0.32;
  z-index: 1;
  filter: saturate(0.7);
}
.wc-item.prev { transform: translateX(-50%) translateX(-76%) scale(0.72) translateY(34px); }
.wc-item.next { transform: translateX(-50%) translateX(76%) scale(0.72) translateY(34px); }

/* 左右箭头 */
.wc-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(7, 13, 24, 0.75);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 200ms, box-shadow 200ms, transform 200ms;
}
.wc-arrow:hover {
  border-color: var(--border-bright);
  box-shadow: var(--shadow-glow);
  transform: translateY(-50%) scale(1.06);
}
.wc-arrow:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; }
.wc-prev { left: -8px; }
.wc-next { right: -8px; }

/* 底部圆点 */
.wc-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: var(--space-3);
}
.wc-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  padding: 0;
  background: rgba(148, 163, 184, 0.30);
  cursor: pointer;
  transition: background 250ms, transform 250ms;
}
.wc-dot:hover { background: rgba(148, 163, 184, 0.55); }
.wc-dot.active {
  background: var(--gradient-brand);
  transform: scale(1.25);
}
.wc-dot:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; }

@media (max-width: 900px) {
  .wc-stage { height: 400px; }
  .wc-item { width: min(86vw, 560px); }
  .wc-item img { height: 270px; }
  .wc-item.prev, .wc-item.next { opacity: 0; }
  .wc-prev { left: 6px; }
  .wc-next { right: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  .wc-item, .wc-arrow, .wc-dot { transition: none; }
}

/* ---------- 14. MEMBER COMPANIES MARQUEE ---------- */.branches { padding: var(--space-10) var(--space-3); max-width: none; }
.branches .section-title { margin-bottom: var(--space-6); }
.branches-track-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  overflow: hidden;
  padding: var(--space-1) 0;
  mask-image: linear-gradient(90deg, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, black 10%, black 90%, transparent 100%);
}
.branches-track {
  display: flex;
  gap: var(--space-2);
  width: max-content;
  animation: branch-scroll 28s linear infinite;
}
.branches-track:hover { animation-play-state: paused; }
@keyframes branch-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - var(--space-2) / 2)); }
}
.branch-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 22px 8px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  color: var(--text);
  font-size: var(--font-md);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 300ms var(--ease-out);
}
.branch-pill:hover {
  border-color: var(--border-bright);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.branch-pill:focus-visible { outline: 2px solid var(--primary-soft); outline-offset: 3px; }
.pill-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  flex-shrink: 0;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.logo-hy::after,
.logo-gz::after,
.logo-xy::after,
.logo-zs::after { display: inline; }
.logo-hy { background: linear-gradient(135deg, #1d4ed8, #3b82f6); }
.logo-hy::before { content: 'HY'; }
.logo-gz { background: linear-gradient(135deg, #0d9488, #14b8a6); }
.logo-gz::before { content: 'GZ'; }
.logo-xy { background: linear-gradient(135deg, #7c3aed, #8b5cf6); }
.logo-xy::before { content: 'XY'; }
.logo-zs { background: linear-gradient(135deg, #ea580c, #f59e0b); }
.logo-zs::before { content: 'ZS'; }

@media (max-width: 640px) {
  .branch-pill { padding: 6px 16px 6px 6px; font-size: var(--font-sm); gap: 8px; }
  .pill-logo { width: 28px; height: 28px; font-size: 10px; }
  .branches { padding: var(--space-8) var(--space-2); }
}

@media (prefers-reduced-motion: reduce) {
  .branches-track { animation: none; flex-wrap: wrap; justify-content: center; }
}

/* ---------- 15. RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .capabilities, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  nav { padding: 0 var(--space-2); }
  .news-ticker-wrap { top: var(--nav-height); }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(7, 13, 24, 0.97);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: var(--space-2) var(--space-3) var(--space-4);
    gap: 2px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.12);
  }
  .nav-links.open { display: flex; }
  .nav-links a { margin-left: 0; padding: 12px 0; border-bottom: 1px solid rgba(148, 163, 184, 0.08); }
  .nav-links a:last-of-type { border-bottom: none; }
  .recruit-btn, .contact-btn { margin-left: 0; margin-top: var(--space-1); text-align: center; }
  .nav-hamburger { display: flex; }
  .hero { padding: calc(var(--nav-height) + 40px + var(--space-8)) var(--space-2) var(--space-10); }
  .hero-logo { height: 76px; }
  .section { padding: var(--space-8) var(--space-2); }
  .capabilities, .service-grid { grid-template-columns: 1fr; }
  .about-content { padding: var(--space-4); }
  .stat { min-width: 0; }
}