/* ============================================================
   ZHONMAI V6 — DESIGN SYSTEM
   Apple-inspired enterprise IT service website
   Brand: 中迈信息 (Zhonmai) | Slogan: 源自中国，迈向世界
   ============================================================ */

/* ===========================
   1. DESIGN TOKENS
   =========================== */
:root {
  /* Brand */
  --red: #EC002C;
  --red-deep: #C20028;
  --red-light: #FF1A47;
  --red-glow: rgba(236, 0, 44, 0.35);

  /* Neutral palette (Apple SF-inspired) */
  --ink: #1D1D1F;          /* primary text, deep charcoal */
  --ink-2: #2C2C2E;        /* secondary surface */
  --ink-3: #3A3A3C;        /* tertiary */
  --gray-1: #6E6E73;       /* secondary text */
  --gray-2: #86868B;       /* tertiary text */
  --gray-3: #B8B8BD;       /* disabled */
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);

  /* Backgrounds */
  --bg: #FFFFFF;
  --bg-alt: #F5F5F7;
  --bg-cool: #FAFAFB;
  --bg-dark: #0A0A0C;
  --bg-dark-2: #131316;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
               "PingFang SC", "Microsoft YaHei", "Segoe UI",
               system-ui, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "Helvetica Neue",
                  "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  /* Spring easing (Apple cubic-bezier) */
  --spring: cubic-bezier(0.22, 1, 0.36, 1);
  --spring-soft: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);

  /* Radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 980px;

  /* Shadows (Apple-style depth) */
  --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-2: 0 4px 12px rgba(0, 0, 0, 0.06), 0 24px 48px rgba(0, 0, 0, 0.08);
  --shadow-3: 0 8px 24px rgba(0, 0, 0, 0.08), 0 32px 64px rgba(0, 0, 0, 0.12);
  --shadow-red: 0 8px 24px rgba(236, 0, 44, 0.24), 0 2px 4px rgba(236, 0, 44, 0.12);

  /* Spacing scale */
  --gap-1: 8px;
  --gap-2: 16px;
  --gap-3: 24px;
  --gap-4: 32px;
  --gap-5: 48px;
  --gap-6: 64px;
  --gap-7: 96px;
  --gap-8: 128px;

  /* Layout */
  --max-w: 1280px;
  --nav-h: 64px;
}

/* ===========================
   2. RESET & BASE
   =========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--red); color: white; }

/* ===========================
   3. TYPOGRAPHY (Optical)
   =========================== */
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
}
.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.title {
  font-family: var(--font-display);
  font-size: clamp(1.375rem, 2.5vw, 1.75rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}
.lead {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: var(--gray-1);
  letter-spacing: -0.005em;
}
.text-mute { color: var(--gray-1); }
.text-soft { color: var(--gray-2); }

/* ===========================
   4. LAYOUT UTILITIES
   =========================== */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}
.container-narrow {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: clamp(64px, 10vw, 128px) 0; }
.section-tight { padding: clamp(48px, 6vw, 80px) 0; }
.section-dark {
  background: var(--bg-dark);
  color: white;
}
.section-dark .text-mute { color: rgba(255, 255, 255, 0.6); }

.flex { display: flex; }
.grid { display: grid; }
.center { display: flex; align-items: center; justify-content: center; }

/* ===========================
   5. NAVIGATION (Glass)
   =========================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: background 0.3s var(--spring), box-shadow 0.3s var(--spring);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}
.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.nav-logo img { height: 24px; width: auto; }
.nav-logo img.uni-mark { height: 28px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
}
.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s var(--ease);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--red);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.4s var(--spring);
}
.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}
.nav-link.active { color: var(--red); }

/* Nav dropdown */
.nav-item-has-dropdown { position: relative; display: inline-flex; align-items: center; }
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: white;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-2);
  padding: 8px;
  min-width: 200px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--spring), transform 0.25s var(--spring);
  z-index: 10;
}
.nav-item-has-dropdown:hover .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-link {
  display: block;
  padding: 10px 16px;
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--ink);
  border-radius: var(--r-sm);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.nav-dropdown-link:hover { background: var(--bg-alt); color: var(--red); }

/* Nav right section */
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-1);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  white-space: nowrap;
}
.lang-toggle:hover { border-color: var(--red); color: var(--red); }
.lang-toggle .lang-active { color: var(--red); }
.lang-toggle .lang-sep { color: var(--gray-3); margin: 0 1px; }
@media (max-width: 1024px) {
  .lang-toggle { display: none; }
}
.nav-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--red);
  transition: opacity 0.2s var(--ease);
}
.nav-phone:hover { opacity: 0.75; }

/* Drawer sub-links */
.drawer-sub-link {
  display: block;
  padding: 10px 0 10px 24px;
  font-size: 1rem;
  color: var(--gray-1);
  border-bottom: 1px solid var(--line);
}
.drawer-phone {
  display: block;
  margin-top: 24px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--red);
  font-family: var(--font-display);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--ink);
  color: white;
  border-radius: var(--r-pill);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: transform 0.2s var(--spring), background 0.2s var(--ease);
}
.nav-cta:hover { background: var(--red); transform: translateY(-1px); }

/* Mobile menu trigger */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--r-sm);
  background: transparent;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
  transition: transform 0.3s var(--spring);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--spring);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-links, .nav-right { display: none; }
  .nav-toggle { display: flex; margin-left: auto; }
}

/* ===========================
   6. MOBILE DRAWER (Spring)
   =========================== */
.drawer {
  position: fixed;
  inset: 0;
  z-index: 99;
  pointer-events: none;
  opacity: 0;
}
.drawer.open {
  pointer-events: auto;
  opacity: 1;
}
.drawer-scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.drawer.open .drawer-scrim { opacity: 1; }
.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(420px, 90vw);
  height: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(30px) saturate(180%);
  padding: 96px 32px 32px;
  transform: translate3d(100%, 0, 0);
  transition: transform 0.55s var(--spring);
  overflow-y: auto;
}
.drawer.open .drawer-panel { transform: translate3d(0, 0, 0); }
.drawer-link {
  display: block;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.drawer-cta {
  display: block;
  margin-top: 32px;
  text-align: center;
  padding: 14px;
  background: var(--ink);
  color: white;
  border-radius: var(--r-pill);
}

/* ===========================
   7. BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--r-pill);
  transition: transform 0.25s var(--spring), background 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--red);
  color: white;
  box-shadow: var(--shadow-red);
}
.btn-primary:hover {
  background: var(--red-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(236, 0, 44, 0.32);
}
.btn-dark {
  background: var(--ink);
  color: white;
}
.btn-dark:hover { background: #000; transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { background: var(--bg-alt); transform: translateY(-2px); }
.btn-white {
  background: white;
  color: var(--ink);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); }
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--red);
  font-weight: 500;
  transition: gap 0.3s var(--spring);
}
.btn-link:hover { gap: 12px; }

/* ===========================
   8. HERO SECTIONS
   =========================== */
.hero {
  position: relative;
  padding-top: calc(var(--nav-h) + clamp(48px, 7vw, 96px));
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow: hidden;
}
.hero-dark {
  background: var(--bg-dark);
  color: white;
  isolation: isolate;
}
.hero-mesh {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}
.hero-mesh::before,
.hero-mesh::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
  animation: meshFloat 18s ease-in-out infinite;
}
.hero-mesh::before {
  top: -20%;
  left: -10%;
  width: 50%;
  height: 60%;
  background: radial-gradient(circle, rgba(236, 0, 44, 0.5), transparent 70%);
}
.hero-mesh::after {
  bottom: -30%;
  right: -15%;
  width: 60%;
  height: 70%;
  background: radial-gradient(circle, rgba(236, 0, 44, 0.25), transparent 70%);
  animation-delay: -9s;
}
@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--r-pill);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(10px);
  margin-bottom: 0;
  opacity: 0.7;
}
.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(236, 0, 44, 0.25);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(236, 0, 44, 0.25); }
  50% { box-shadow: 0 0 0 8px rgba(236, 0, 44, 0.08); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  max-width: 880px;
}
.hero-title .accent {
  background: linear-gradient(120deg, var(--red-light), var(--red));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin-top: 24px;
  font-size: clamp(1.0625rem, 1.6vw, 1.375rem);
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
  max-width: 640px;
  letter-spacing: -0.005em;
}

/* Hero slogan — one-line, secondary visual weight */
.hero-slogan {
  margin-top: 20px;
  font-size: clamp(0.9375rem, 1.3vw, 1.125rem);
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  letter-spacing: -0.005em;
  font-weight: 400;
}

/* Metrics strip — Apple-style clean numbers on white */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  text-align: center;
}
.metric-item {
  position: relative;
  padding: 0 24px;
}
.metric-item + .metric-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  bottom: 15%;
  width: 1px;
  background: var(--line);
}
.metric-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.03em;
  line-height: 1;
}
.metric-num span {
  font-size: 0.45em;
  color: var(--gray-1);
  font-weight: 500;
  margin-left: 2px;
}
.metric-label {
  margin-top: 10px;
  font-size: clamp(0.8125rem, 1vw, 0.9375rem);
  color: var(--gray-1);
  font-weight: 500;
  letter-spacing: 0.01em;
}
@media (max-width: 768px) {
  .metrics-strip { grid-template-columns: repeat(2, 1fr); gap: 32px 0; }
  .metric-item:nth-child(3)::before { display: none; }
}
.hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Page hero (light) */
.page-hero {
  padding-top: calc(var(--nav-h) + clamp(64px, 8vw, 120px));
  padding-bottom: clamp(48px, 6vw, 80px);
  background: linear-gradient(180deg, var(--bg-alt) 0%, white 100%);
  text-align: center;
  position: relative;
}
.page-hero .container-narrow { position: relative; z-index: 1; }
.page-hero .eyebrow { display: block; margin-bottom: 16px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.page-hero p {
  font-size: clamp(1.0625rem, 1.6vw, 1.375rem);
  color: var(--gray-1);
  line-height: 1.55;
  max-width: 720px;
  margin: 0 auto;
}

/* ===========================
   9. CARDS
   =========================== */
.card {
  background: white;
  border-radius: var(--r-lg);
  padding: 32px;
  border: 1px solid var(--line);
  transition: transform 0.4s var(--spring), box-shadow 0.4s var(--spring), border-color 0.4s var(--ease);
  position: relative;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: transparent;
}
.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--red);
  color: white;
  border-radius: var(--r-md);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.card p { color: var(--gray-1); font-size: 0.9375rem; line-height: 1.55; }

.card-arrow {
  position: absolute;
  top: 32px;
  right: 32px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  transition: background 0.3s var(--ease), transform 0.3s var(--spring);
}
.card:hover .card-arrow { background: var(--red); color: white; transform: rotate(-45deg); }

/* ===========================
   10. STATS
   =========================== */
.stat {
  text-align: center;
  padding: 32px 16px;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--red);
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}
.stat-num .suffix {
  font-size: 0.5em;
  color: var(--ink);
  font-weight: 600;
}
.stat-label {
  margin-top: 12px;
  font-size: 0.9375rem;
  color: var(--gray-1);
  font-weight: 500;
}

/* ===========================
   11. SOLUTION CARDS (Large)
   =========================== */
.solution-card {
  position: relative;
  background: white;
  border-radius: var(--r-xl);
  padding: 40px;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.5s var(--spring), box-shadow 0.5s var(--spring);
  display: flex;
  flex-direction: column;
}
.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-3);
}
.solution-card.dark {
  background: var(--bg-dark);
  color: white;
  border-color: transparent;
}
.solution-num {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.05em;
}
.solution-card h3 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
  line-height: 1.2;
}
.solution-card p { color: var(--gray-1); line-height: 1.6; margin-bottom: 24px; }
.solution-card.dark p { color: rgba(255, 255, 255, 0.7); }
.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.tag {
  padding: 4px 12px;
  background: var(--bg-alt);
  border-radius: var(--r-pill);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-1);
}
.solution-card.dark .tag {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.7);
}
.solution-foot {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}
.solution-card.dark .solution-foot { border-top-color: rgba(255, 255, 255, 0.08); }

/* ===========================
   12. BENTO GRID
   =========================== */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.bento-item {
  background: white;
  border-radius: var(--r-xl);
  padding: 32px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--spring);
}
.bento-item:hover { transform: translateY(-4px); }
.bento-2 { grid-column: span 2; }
.bento-3 { grid-column: span 3; }
.bento-4 { grid-column: span 4; }
.bento-6 { grid-column: span 6; }
.bento-dark {
  background: var(--bg-dark);
  color: white;
  border-color: transparent;
}
.bento-mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 0% 0%, rgba(236, 0, 44, 0.18), transparent 50%),
    radial-gradient(circle at 100% 100%, rgba(236, 0, 44, 0.08), transparent 50%);
}
.bento-content { position: relative; z-index: 1; }

@media (max-width: 1024px) {
  .bento-2, .bento-3, .bento-4 { grid-column: span 6; }
}

/* ===========================
   13. MARQUEE (Clients)
   =========================== */
.marquee {
  position: relative;
  overflow: hidden;
  padding: 24px 0;
  mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: marqueeScroll 40s linear infinite;
}
.marquee-item {
  flex-shrink: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-2);
  letter-spacing: -0.01em;
  padding: 12px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: white;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
  white-space: nowrap;
}
.marquee-item:hover { color: var(--red); border-color: var(--red); }
@keyframes marqueeScroll {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-50%, 0, 0); }
}
@keyframes marqueeScrollRight {
  0% { transform: translate3d(-50%, 0, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

/* Hero 双向滚动 banner */
.hero-banners {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hero-banner {
  padding: 12px 0;
}
.hero-banner .marquee-item {
  font-size: 1.125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 10px 20px;
}
.hero-banner .marquee-item:hover {
  color: var(--red-light);
  border-color: var(--red-light);
  background: rgba(236, 0, 44, 0.08);
}
.hero-banner-right .marquee-track {
  animation: marqueeScrollRight 50s linear infinite;
}

/* ===========================
   13. BIZ MODULE — 4-card scroll carousel
   =========================== */

/* Moved company intro section */
.biz-intro-section {
  padding: clamp(32px, 5vw, 64px) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.biz-intro-text {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(0.9375rem, 1.3vw, 1.0625rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: -0.005em;
}
.biz-intro-text strong {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

/* Module container */
.biz-module {
  margin-top: clamp(48px, 7vw, 80px);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Module head with tabs */
.biz-module-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.biz-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.biz-tab {
  padding: 8px 20px;
  border-radius: 100px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.biz-tab:hover {
  color: white;
  border-color: rgba(255, 255, 255, 0.25);
}
.biz-tab.active {
  background: var(--red);
  border-color: var(--red);
  color: white;
}

/* Carousel layout — arrows outside viewport */
.biz-carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
}

/* Arrows — offset outward, away from cards */
.biz-arrow {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: white;
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: all 0.25s var(--ease);
  padding: 0 0 3px 0;
}
.biz-arrow:hover {
  background: var(--red);
  border-color: var(--red);
  transform: scale(1.08);
}
.biz-arrow-left {
  margin-right: clamp(12px, 2vw, 24px);
}
.biz-arrow-right {
  margin-left: clamp(12px, 2vw, 24px);
}

/* Viewport — overflow hidden, shows 4 cards */
.biz-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Panel — each tab's content */
.biz-panel {
  display: none;
}
.biz-panel.active {
  display: block;
  animation: bizFadeIn 0.4s var(--ease);
}
@keyframes bizFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Cards scroll container — horizontal scroll-snap */
.biz-cards {
  display: flex;
  gap: clamp(16px, 2vw, 24px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0;
  scrollbar-width: none;
}
.biz-cards::-webkit-scrollbar {
  display: none;
}

/* Individual card — enlarged, more padding, weakened border */
.biz-card {
  flex: 0 0 calc(25% - clamp(12px, 1.5vw, 18px));
  scroll-snap-align: start;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: clamp(24px, 3vw, 36px);
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  transition: all 0.35s var(--ease);
  cursor: default;
}
.biz-card:hover {
  background: rgba(236, 0, 44, 0.08);
  border-color: rgba(236, 0, 44, 0.2);
  transform: translateY(-3px);
}
.biz-num {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--red-light);
  letter-spacing: 0.06em;
  opacity: 0.8;
}
.biz-name {
  font-size: 1.0625rem;
  font-weight: 600;
  color: white;
  letter-spacing: -0.01em;
}
.biz-desc {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.5;
}

/* Cert card variant */
.biz-card-cert {
  text-align: left;
}
.biz-cert-icon {
  width: 28px;
  height: 28px;
  color: var(--red);
  margin-bottom: 4px;
  flex-shrink: 0;
}
.biz-cert-icon svg {
  width: 100%;
  height: 100%;
}
.biz-card-cert .biz-desc {
  font-size: 0.75rem;
  line-height: 1.45;
}

/* Industry card variant */
.biz-card-img {
  align-items: flex-start;
  text-align: left;
}
.biz-svg-icon {
  width: 28px;
  height: 28px;
  color: var(--red);
  margin-bottom: 4px;
  flex-shrink: 0;
}
.biz-svg-icon svg {
  width: 100%;
  height: 100%;
}
.biz-card-img .biz-name {
  font-size: 1rem;
}

/* Dots indicator */
.biz-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 32px);
}
.biz-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.biz-dot.active {
  background: var(--red);
  width: 24px;
  border-radius: 4px;
}

/* Responsive — tablet: 3 cards visible */
@media (max-width: 1024px) {
  .biz-card {
    flex: 0 0 calc(33.333% - clamp(11px, 1.5vw, 16px));
  }
}

/* Responsive — mobile: 2 cards visible */
@media (max-width: 768px) {
  .biz-module {
    margin-top: 40px;
  }
  .biz-card {
    flex: 0 0 calc(50% - 8px);
    padding: 20px;
    min-height: 130px;
  }
  .biz-name {
    font-size: 0.9375rem;
  }
  .biz-desc {
    font-size: 0.75rem;
  }
  .biz-arrow {
    width: 32px;
    height: 32px;
    font-size: 1.25rem;
  }
  .biz-arrow-left {
    margin-right: 8px;
  }
  .biz-arrow-right {
    margin-left: 8px;
  }
  .biz-tab {
    padding: 6px 14px;
    font-size: 0.75rem;
  }
  .hero-slogan {
    font-size: 0.9375rem;
  }
}

@media (max-width: 480px) {
  .biz-card {
    flex: 0 0 calc(50% - 8px);
  }
  .biz-dots {
    margin-top: 16px;
  }
}

/* ===========================
   14. SECTION HEADERS
   =========================== */
.sec-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: clamp(48px, 6vw, 72px);
}
.sec-head.center { align-items: center; text-align: center; }
.sec-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.sec-head .eyebrow { margin-bottom: 8px; }
.sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 720px;
}
.sec-head p {
  font-size: 1.0625rem;
  color: var(--gray-1);
  line-height: 1.55;
  max-width: 560px;
}

/* ===========================
   15. CASE STUDIES (Apple-style cards)
   =========================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* Base card */
.case-card {
  background: #fff;
  border-radius: 24px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  padding: 36px;
  display: flex;
  flex-direction: column;
  box-shadow: none;
  transition:
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.case-card:hover {
  transform: translateY(-8px);
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 12px 32px rgba(0, 0, 0, 0.10),
    0 32px 64px rgba(0, 0, 0, 0.06);
  border-color: transparent;
}

/* Label */
.case-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

/* Typography */
.case-card h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin-bottom: 10px;
}
.case-card p {
  color: var(--gray-1);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
}

/* Data grid */
.case-data {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.case-data-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.case-data > div {
  padding: 0 16px;
  border-left: 1px solid var(--line);
}
.case-data > div:first-child {
  border-left: none;
  padding-left: 0;
}
.case-data b {
  display: block;
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}
.case-data em {
  font-size: 0.5em;
  font-weight: 500;
  font-style: normal;
  color: var(--gray-2);
  margin-left: 1px;
}
.case-data span {
  display: block;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--gray-1);
}

/* Featured card spans all 3 columns */
.case-featured {
  grid-column: span 3;
  padding: 44px;
}
.case-featured h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}
.case-featured p {
  font-size: 0.9375rem;
  max-width: 680px;
}

@media (max-width: 1024px) {
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-featured { grid-column: span 2; }
}
@media (max-width: 768px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-featured { grid-column: span 1; padding: 28px; }
  .case-card { padding: 28px; }
  .case-data { grid-template-columns: repeat(2, 1fr); gap: 20px 16px; }
  .case-data > div { border-left: none; padding-left: 0; }
}

/* AI page — case data band responsive */
@media (max-width: 768px) {
  #ai-cases .reveal > div > div[style*="grid-template-columns: 1fr auto"] {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  #ai-cases .reveal > div > div[style*="grid-template-columns: 1fr auto"] > div:last-child {
    justify-content: flex-start !important;
    gap: 20px !important;
  }
}

/* ===========================
   16. NEWS CARDS
   =========================== */
.news-card {
  background: white;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: transform 0.4s var(--spring), box-shadow 0.4s var(--spring);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}
.news-thumb {
  aspect-ratio: 16 / 9;
  background: var(--bg-alt);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-thumb-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink);
}
.news-thumb-date {
  position: absolute;
  bottom: 16px;
  right: 16px;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  border-radius: var(--r-pill);
  font-size: 0.75rem;
  color: white;
}
.news-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 12px;
}
.news-body p {
  font-size: 0.875rem;
  color: var(--gray-1);
  line-height: 1.55;
  flex: 1;
}
/* 焦点资讯头条大卡（横向布局） */
.news-card-hero {
  flex-direction: row;
  margin-bottom: 24px;
}
.news-card-hero .news-thumb {
  width: 44%;
  flex-shrink: 0;
  aspect-ratio: auto;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-card-hero .news-body {
  padding: 48px;
}
.news-card-hero .news-body h3 {
  font-size: 1.625rem;
  line-height: 1.35;
  margin-bottom: 16px;
}
.news-card-hero .news-body p {
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: 20px;
}
.news-foot {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: auto;
}
.news-meta {
  color: var(--gray-2);
  font-size: 0.875rem;
}
/* 文档列表卡片 */
.doc-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.doc-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}
.doc-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(236, 0, 44, 0.08), rgba(236, 0, 44, 0.02));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.doc-card-icon span {
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.05em;
}
.doc-card-body {
  flex: 1;
  min-width: 200px;
}
.doc-card-body h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ink);
}
.doc-card-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.doc-card-meta span {
  font-size: 0.75rem;
  color: var(--gray-2);
}
.doc-card-cat {
  font-size: 0.75rem;
  color: var(--gray-2);
  background: var(--bg-alt);
  padding: 2px 10px;
  border-radius: 999px;
}
.doc-card-desc {
  font-size: 0.8125rem;
  color: var(--gray-1);
  margin-top: 6px;
  line-height: 1.5;
}
@media (max-width: 768px) {
  .news-card-hero { flex-direction: column; }
  .news-card-hero .news-thumb { width: 100%; min-height: 200px; aspect-ratio: 16 / 9; }
  .news-card-hero .news-body { padding: 24px; }
}

/* ===========================
   17. TIMELINE
   =========================== */
.timeline {
  position: relative;
  padding-left: 64px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--red), var(--bg-alt) 70%);
}
.timeline-item {
  position: relative;
  padding-bottom: 48px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -42px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--red);
  box-shadow: 0 0 0 4px rgba(236, 0, 44, 0.12);
}
.timeline-year {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--red);
  margin-bottom: 8px;
  line-height: 1;
}
.timeline-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.timeline-item p {
  color: var(--gray-1);
  line-height: 1.6;
}

/* ===========================
   18. FAQ
   =========================== */
.faq {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 24px 0;
}
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  gap: 24px;
}
.faq-q .ic {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.4s var(--spring), background 0.3s var(--ease);
  font-size: 1rem;
}
.faq-item.open .faq-q .ic {
  background: var(--red);
  color: white;
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--spring);
  color: var(--gray-1);
  line-height: 1.65;
}
.faq-item.open .faq-a {
  max-height: 500px;
  padding-top: 16px;
}

/* ===========================
   19. TABS
   =========================== */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  background: var(--bg-alt);
  border-radius: var(--r-pill);
  margin-bottom: 48px;
  width: fit-content;
  max-width: 100%;
}
.tab {
  padding: 10px 20px;
  border-radius: var(--r-pill);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-1);
  transition: all 0.3s var(--spring);
  white-space: nowrap;
}
.tab.active {
  background: var(--ink);
  color: white;
  box-shadow: var(--shadow-1);
}
.tab-pane {
  display: none;
  animation: fadeIn 0.5s var(--spring);
}
.tab-pane.active { display: block; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===========================
   20. FORMS
   =========================== */
.form-row {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}
.form-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 640px) { .form-row.cols-2 { grid-template-columns: 1fr; } }
.form-field { display: flex; flex-direction: column; gap: 8px; }
.form-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
}
.form-field input,
.form-field textarea,
.form-field select {
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: white;
  font-size: 0.9375rem;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  outline: none;
  width: 100%;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 4px rgba(236, 0, 44, 0.1);
}
.form-field textarea { min-height: 120px; resize: vertical; }
.form-error {
  color: var(--red);
  font-size: 0.8125rem;
  display: none;
}
.form-field.error input,
.form-field.error textarea { border-color: var(--red); }
.form-field.error .form-error { display: block; }

/* ===========================
   21. FOOTER
   =========================== */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 64px;
}
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
.footer-brand p {
  margin-top: 20px;
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: white;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a {
  font-size: 0.9375rem;
  transition: color 0.2s var(--ease);
}
.footer-col a:hover { color: white; }
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.875rem;
  line-height: 1.6;
}
.footer-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}
@media (max-width: 640px) { .footer-bot { flex-direction: column; gap: 12px; } }

/* ===========================
   22. CTA BAND
   =========================== */
.cta-band {
  background: var(--ink);
  color: white;
  padding: clamp(64px, 10vw, 120px) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(236, 0, 44, 0.3), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(236, 0, 44, 0.12), transparent 50%);
}
.cta-band .container { position: relative; z-index: 1; }
.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.cta-band p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.72);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.55;
}
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===========================
   23. REVEAL ANIMATION
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--spring), transform 0.8s var(--spring);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ===========================
   24. MOCKUP / DASHBOARD CARD
   =========================== */
.mockup {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-xl);
  padding: 24px;
  backdrop-filter: blur(20px);
  overflow: hidden;
  position: relative;
}
.mockup-light {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  padding: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-3);
}
.mockup-bar {
  display: flex;
  gap: 6px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.mockup-light .mockup-bar { border-bottom-color: var(--line); }
.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}
.mockup-light .mockup-dot { background: var(--bg-alt); }

/* ===========================
   25. BREADCRUMB
   =========================== */
.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--gray-2);
  margin-bottom: 24px;
}
.crumbs a { transition: color 0.2s var(--ease); }
.crumbs a:hover { color: var(--red); }
.crumbs .sep { color: var(--gray-3); }

/* ===========================
   26. GRID HELPERS
   =========================== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
}

/* ===========================
   27. ICON SYSTEM
   Professional line-style SVG icons
   =========================== */
.ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 0;
}
.ico svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}
.ico-sm { width: 18px; height: 18px; }
.ico-md { width: 22px; height: 22px; }
.ico-lg { width: 28px; height: 28px; }
.ico-xl { width: 36px; height: 36px; }

/* Icon tile — for feature cards */
.ico-tile {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  color: var(--red);
  margin-bottom: 20px;
  flex-shrink: 0;
}
.ico-tile.dark {
  background: rgba(255, 255, 255, 0.08);
  color: white;
}
.ico-tile.red {
  background: var(--red);
  color: white;
}
.ico-tile svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

/* Industry / grid icon tiles */
.ico-grid-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 28px 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  text-align: center;
  transition: transform 0.4s var(--spring), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.ico-grid-tile:hover {
  transform: translateY(-3px);
  border-color: var(--red);
  background: rgba(236, 0, 44, 0.02);
}
.ico-grid-tile .ico { width: 32px; height: 32px; color: var(--red); }
.ico-grid-tile span { font-size: 0.9375rem; font-weight: 500; }

/* Dark variant */
.section-dark .ico-grid-tile {
  border-color: rgba(255, 255, 255, 0.08);
}
.section-dark .ico-grid-tile:hover {
  border-color: var(--red);
  background: rgba(236, 0, 44, 0.06);
}
.section-dark .ico-grid-tile .ico { color: white; }

/* ===========================
   28. ACCESSIBILITY
   =========================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 1000;
  padding: 12px 20px;
  background: var(--ink);
  color: white;
  border-radius: var(--r-md);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 16px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: white; backdrop-filter: none; }
  .drawer-panel { background: white; backdrop-filter: none; }
  .mockup { background: var(--bg-dark-2); backdrop-filter: none; }
}

/* ===========================
   29. FLOATING CONSULT BUTTON
   =========================== */
.float-consult {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-consult-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--red);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(236, 0, 44, 0.3);
  transition: transform 0.3s var(--spring), box-shadow 0.3s var(--ease);
  cursor: pointer;
}
.float-consult-btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 24px rgba(236, 0, 44, 0.4);
}
.float-consult-btn:nth-child(2) {
  background: var(--ink);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}
@media (max-width: 640px) {
  .float-consult { right: 16px; bottom: 16px; }
  .float-consult-btn { width: 44px; height: 44px; }
}

/* ===========================
   30. FOOTER BEIAN LINKS
   =========================== */
.footer-beian {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.footer-beian a {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s var(--ease);
}
.footer-beian a:hover { color: rgba(255, 255, 255, 0.8); }
@media (max-width: 640px) {
  .footer-beian { justify-content: center; }
}

/* ===========================
   31. LEGAL PAGE STYLES
   =========================== */
.legal-content {
  max-width: 820px;
  margin: 0 auto;
}
.legal-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 40px 0 16px;
  color: var(--ink);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--ink);
}
.legal-content p {
  color: var(--gray-1);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 0.9375rem;
}
.legal-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}
.legal-content ul li {
  color: var(--gray-1);
  line-height: 1.8;
  font-size: 0.9375rem;
  margin-bottom: 8px;
}
.legal-content strong { color: var(--ink); }
.legal-updated {
  font-size: 0.8125rem;
  color: var(--gray-2);
  margin-bottom: 32px;
}

/* ===========================
   32. CASE THUMB VISUAL
   =========================== */
.case-thumb-visual {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
}
.case-thumb-visual .case-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(236, 0, 44, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--red);
}
.case-thumb-visual .case-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}
.case-thumb-visual .case-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

/* === 全球技术生态 (信实商务风格) === */
.tech-eco {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 1080px;
  margin: 0 auto;
}
.tech-card {
  --brand: #ffffff;
  position: relative;
  padding: 28px 24px 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  overflow: hidden;
  transition: border-color 0.4s var(--spring), background 0.4s var(--spring), transform 0.4s var(--spring), box-shadow 0.4s var(--spring);
}
.tech-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--brand);
  opacity: 0.85;
  transition: opacity 0.4s var(--spring), height 0.4s var(--spring);
}
.tech-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}
.tech-card:hover::before { opacity: 1; height: 3px; }
.tech-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--brand);
  opacity: 0.9;
}
.tech-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}
.tech-mono {
  font-family: "JetBrains Mono", "Roboto Mono", ui-monospace, monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
}
.tech-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.04);
}
.tech-name {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 6px;
  color: #fff;
}
.tech-sub {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.01em;
  margin: 0 0 18px;
}
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tech-tags span {
  font-family: "JetBrains Mono", "Roboto Mono", ui-monospace, monospace;
  font-size: 0.6875rem;
  padding: 4px 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.02);
}
.tech-card:hover .tech-name { color: #fff; }

.tech-footer {
  margin-top: 36px;
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.tech-footer p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  line-height: 1.7;
}
.tech-footer strong {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

@media (max-width: 900px) {
  .tech-eco { grid-template-columns: repeat(2, 1fr); }
}
/* ===== News pagination ===== */
.news-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.news-page-nums {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-page-btn,
.news-page-num {
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
  font-family: inherit;
  white-space: nowrap;
}
.news-page-arrow {
  font-size: 1.125rem;
  line-height: 1;
  color: inherit;
}
.news-page-btn:hover:not(:disabled),
.news-page-num:hover {
  background: var(--bg-alt);
  border-color: var(--gray-2);
}
.news-page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.news-page-num {
  min-width: 40px;
  padding: 0 10px;
}
.news-page-num.active {
  background: var(--red);
  color: white;
  border-color: var(--red);
  font-weight: 600;
}
.news-page-info {
  font-size: 0.8125rem;
  color: var(--gray-2);
  margin-left: 12px;
}
@media (max-width: 560px) {
  .news-pagination { gap: 6px; margin-top: 40px; }
  .news-page-btn, .news-page-num { min-width: 36px; height: 36px; font-size: 0.8125rem; padding: 0 10px; }
  .news-page-info { display: none; }
}

@media (max-width: 560px) {
  .tech-eco { grid-template-columns: 1fr; }
  .tech-name { font-size: 1.5rem; }
}

/* Utility: hidden (used by filter scripts) */
.hidden { display: none !important; }