/* ==========================================================================
   Reach · 正合云帆 · 全球官网
   Dark theme aligned with hub.reach-ai.tech
   ========================================================================== */

:root {
  /* Brand */
  --color-brand: #10B981;          /* Reach emerald green */
  --color-brand-dark: #059669;
  --color-brand-light: #34D399;
  --color-brand-lighter: #6EE7B7;
  --color-accent: #3B82F6;         /* AI blue */
  --color-accent-light: #60A5FA;
  --color-warning: #F59E0B;
  --color-purple: #A78BFA;         /* purple-400 for gradient halo */

  /* Neutrals (Dark theme) */
  --color-bg: #0B1220;             /* deep navy-black, main bg */
  --color-bg-soft: #111827;        /* gray-900, alternate sections */
  --color-bg-card: #111827;        /* gray-900 card */
  --color-bg-card-hover: #1F2937;  /* gray-800 on hover */
  --color-surface: #0B1220;        /* near-black for contrast sections */
  --color-surface-2: #1F2937;      /* gray-800 */

  --color-text: #F9FAFB;           /* white-ish */
  --color-text-muted: #9CA3AF;     /* gray-400 */
  --color-text-light: #6B7280;     /* gray-500 */
  --color-text-on-dark: #F9FAFB;
  --color-text-on-dark-muted: #9CA3AF;

  --color-border: #1F2937;         /* gray-800 */
  --color-border-light: #1F2937;   /* gray-800 */
  --color-border-dark: #374151;    /* gray-700 */

  /* Glows / accents */
  --glow-blue: rgba(59, 130, 246, 0.25);
  --glow-purple: rgba(167, 139, 250, 0.25);

  /* Typography（系统字体栈，不再依赖 Google Fonts 外链） */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* Spacing */
  --container-max: 1280px;
  --section-pad-y: clamp(80px, 10vw, 140px);

  /* Radius */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15,15,14,0.04), 0 1px 3px rgba(15,15,14,0.06);
  --shadow-md: 0 4px 12px rgba(15,15,14,0.06), 0 2px 4px rgba(15,15,14,0.04);
  --shadow-lg: 0 24px 48px -12px rgba(15,15,14,0.12), 0 8px 16px rgba(15,15,14,0.06);
  --shadow-xl: 0 40px 80px -20px rgba(15,15,14,0.18);
  --shadow-glow: 0 0 60px rgba(16,185,129,0.25);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; padding: 0; color: inherit; }
ul { list-style: none; padding: 0; margin: 0; }
input, textarea { font-family: inherit; font-size: inherit; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}

.text-accent { color: var(--color-brand); }

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  background: rgba(11, 18, 32, 0.7);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s var(--ease-out);
}
.nav.is-scrolled {
  padding: 10px 0;
  background: rgba(11, 18, 32, 0.92);
  border-bottom-color: var(--color-border);
}
.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}
.nav__logo-mark { width: 36px; height: 36px; border-radius: 8px; }
.nav__logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.nav__logo-name { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; color: var(--color-text); }
.nav__logo-sub { font-size: 10px; color: var(--color-text-muted); margin-top: 2px; letter-spacing: 0.05em; white-space: nowrap; }

/* Brand switch (ReachAI | ReachVendorHub | ReachAgent | Aleeai API) */
.nav__brand-switch {
  display: inline-flex;
  margin-left: 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--r-pill);
  padding: 4px;
}
.nav__brand {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  transition: all 0.2s var(--ease-out);
  white-space: nowrap;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.25;
  gap: 1px;
  min-height: 42px;
  justify-content: center;
}
.nav__brand-title { font-size: 13px; font-weight: 600; }
/* 第 83 轮：Reach 生态分组分隔线（产品组 | 生态组） */
.nav__brand-divider {
  width: 1px;
  align-self: stretch;
  margin: 5px 8px;
  background: var(--color-border);
  flex-shrink: 0;
}
.nav__brand-sub {
  font-size: 10px;
  font-weight: 400;
  color: var(--color-text-light);
  opacity: 0.9;
}
.nav__brand:hover { color: var(--color-text); background: rgba(255,255,255,0.06); }
.nav__brand:hover .nav__brand-sub { color: var(--color-text-muted); }
.nav__brand--active {
  background: var(--color-brand);
  color: #fff;
}
.nav__brand--active .nav__brand-sub { color: rgba(255,255,255,0.8); }
.nav__brand--active:hover { color: #fff; background: var(--color-brand-dark); }
.nav__brand--active:hover .nav__brand-sub { color: rgba(255,255,255,0.8); }
.nav__brand--external .nav__brand-sub { color: var(--color-brand-light); }
.nav__brand--external:hover { color: var(--color-brand-light); }

.nav__links {
  display: flex;
  gap: 2px;
  flex: 1;
  margin-left: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav__links a {
  font-size: 14px;
  color: var(--color-text-muted);
  padding: 8px 14px;
  border-radius: var(--r-pill);
  white-space: nowrap;
  transition: all 0.2s var(--ease-out);
  font-weight: 500;
}
.nav__links a:hover { color: var(--color-text); background: rgba(255,255,255,0.04); }

.nav__actions { display: flex; align-items: center; gap: 12px; }
/* 登录/注册按钮：中英文宽度取最大，避免语言切换时布局跳动 */
#nav-account { min-width: 148px; text-align: center; white-space: nowrap; }
.lang-toggle {
  font-size: 13px;
  color: var(--color-text-muted);
  display: flex;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--r-pill);
  transition: background 0.2s;
}
.lang-toggle:hover { background: rgba(255,255,255,0.04); }
.lang-toggle__active { color: var(--color-text); font-weight: 600; }
.lang-toggle__sep { color: var(--color-border); }

.nav__mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  margin-left: auto;   /* 汉堡按钮靠右（第 59 轮） */
  cursor: pointer;
  background: none;
  border: none;
  transition: opacity 0.2s;
}
.nav__mobile-toggle:hover { opacity: 0.75; }
.nav__mobile-toggle--active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__mobile-toggle--active span:nth-child(2) { opacity: 0; }
.nav__mobile-toggle--active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav__mobile-toggle span { transition: transform 0.2s var(--ease-out), opacity 0.2s; }

/* ===== 右侧导航收纳（第 52 轮）：nav__menu 下拉面板 ===== */
.nav__menu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 280px;
  flex-direction: column;
  gap: 4px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  z-index: 110;
}
.nav__menu--open { display: flex; }
.nav__menu .nav__links {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  flex: none;
  margin: 0;
}
.nav__menu .nav__links a {
  padding: 10px 14px;
  border-radius: 10px;
}
.nav__menu .nav__actions {
  border-top: 1px solid var(--color-border-light);
  margin-top: 8px;
  padding-top: 12px;
  justify-content: space-between;
}
.nav__menu .lang-toggle { display: flex; }

.nav__mobile-toggle span {
  width: 22px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  font-weight: 500;
  font-size: 14px;
  transition: all 0.25s var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}
.btn--sm { padding: 8px 16px; font-size: 13px; }
.btn--lg { padding: 14px 26px; font-size: 15px; }
.btn--primary {
  background: var(--color-brand);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-brand-dark);
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(16,185,129,0.4);
}
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.06);
  border-color: var(--color-text-muted);
}
.btn--full { width: 100%; justify-content: center; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px 32px 80px;
  overflow: hidden;
  display: flex;
  align-items: center;
  background: linear-gradient(to bottom, #111827, #0B1220);
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}
.hero__glow--1 {
  width: 700px; height: 600px;
  background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
  top: -250px; left: 30%;
  opacity: 0.5;
}
.hero__glow--2 {
  width: 600px; height: 500px;
  background: radial-gradient(circle, var(--glow-purple) 0%, transparent 70%);
  top: -100px; right: 5%;
  opacity: 0.45;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 12px;
  background: rgba(16,185,129,0.12);
  border: 1px solid rgba(16,185,129,0.3);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--color-brand-light);
  margin-bottom: 32px;
  font-weight: 500;
}
.hero__badge-dot {
  width: 6px; height: 6px;
  background: var(--color-brand);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero__title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 24px;
}
.hero__title-line { display: block; }
.hero__title-line--accent {
  color: var(--color-brand);
  position: relative;
}
.hero__subtitle {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 580px;
  margin: 0 auto 40px;
}
.hero__subtitle strong { color: var(--color-text); font-weight: 600; }
.hero__cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 80px;
}
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 48px;
  border-top: 1px solid var(--color-border-light);
}
.hero__stat { text-align: center; }
.hero__stat-num {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}
.hero__stat-num sup {
  font-size: 0.6em;
  color: var(--color-brand);
  margin-left: 2px;
  font-weight: 600;
}
.hero__stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Globe */
.hero__globe {
  position: absolute;
  right: -260px;
  top: 50%;
  transform: translateY(-50%);
  width: 800px;
  height: 800px;
  z-index: 1;
  pointer-events: none;
  display: none;
}
@media (min-width: 1200px) {
  .hero__globe { display: block; opacity: 0.85; }
  .hero__inner { max-width: 640px; margin-left: 80px; margin-right: auto; text-align: left; }
  .hero__badge { margin-left: 0; }
  .hero__cta { justify-content: flex-start; }
  .hero__stats { margin-left: 0; margin-right: auto; padding-left: 0; }
}
.globe {
  position: relative;
  width: 100%;
  height: 100%;
  animation: globeRotate 30s linear infinite;
}
@keyframes globeRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.globe__sphere {
  position: absolute;
  inset: 20%;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(16,185,129,0.2), rgba(16,185,129,0.05) 60%, transparent);
  border: 1px solid rgba(16,185,129,0.15);
}
.globe__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(16,185,129,0.25);
}
.globe__ring--1 { inset: 15%; }
.globe__ring--2 { inset: 8%; border-color: rgba(59,130,246,0.2); }
.globe__ring--3 { inset: 0; border-color: rgba(245,158,11,0.15); }

.globe__dots { position: absolute; inset: 0; }
.globe__dot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 6px;
  height: 6px;
  background: var(--color-brand);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-brand);
  animation: dotPulse 3s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { opacity: 0.5; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

.hero__floating-card {
  position: absolute;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-light);
  padding: 12px 16px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-md);
  animation: float 6s ease-in-out infinite;
  /* 白底卡片必须用深色文字，避免继承父元素白色文字导致无法阅读 */
  color: #0B1220;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero__floating-card--1 { top: 12%; left: -8%; animation-delay: 0s; }
.hero__floating-card--2 { top: 42%; left: -22%; animation-delay: 1.5s; }
.hero__floating-card--3 { top: 72%; left: -10%; animation-delay: 3s; }

.floating-card__icon {
  font-size: 18px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16,185,129,0.1);
  border-radius: var(--r-sm);
}
.floating-card__title { font-size: 13px; font-weight: 600; color: #0B1220; }
.floating-card__sub { font-size: 11px; color: #4B5563; margin-top: 2px; }

/* ==========================================================================
   Trust bar
   ========================================================================== */
.trust {
  padding: 56px 0;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-bg-soft);
}
.trust__label {
  text-align: center;
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 28px;
  letter-spacing: 0.02em;
}
.trust__label strong { color: var(--color-text); font-weight: 600; }
.trust__logos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
  opacity: 0.6;
}
.trust__logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  font-family: var(--font-sans);
  transition: opacity 0.3s;
}
.trust__logo:hover { opacity: 1; }

/* ==========================================================================
   Sections (common)
   ========================================================================== */
.section {
  padding: var(--section-pad-y) 0;
  position: relative;
}
.section__head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section__head--left { text-align: left; margin-left: 0; }
.section__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-brand);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section__eyebrow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--color-brand);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
}
.section__eyebrow--light { color: var(--color-brand-light); }
.section__title {
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 20px;
}
.section__title-en {
  font-size: 0.5em;
  font-weight: 500;
  color: var(--color-text-light);
  letter-spacing: 0;
  font-family: var(--font-sans);
  display: inline-block;
  margin-top: 8px;
}
.section__desc {
  font-size: 17px;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   Compare section (痛点对比)
   ========================================================================== */
.section--compare {
  background: var(--color-bg-soft);
}
.compare {
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
}
.compare__head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--color-border-light);
}
.compare__head .compare__col {
  padding: 20px 28px;
  font-size: 17px;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.01em;
}
.compare__head .compare__col--old {
  color: var(--color-text-muted);
  background: rgba(15,15,14,0.02);
}
.compare__head .compare__col--new {
  color: var(--color-brand-dark);
  background: rgba(16,185,129,0.06);
}
.compare__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.compare__row + .compare__row { border-top: 1px solid var(--color-border-light); }
.compare__col {
  padding: 24px 28px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-muted);
}
.compare__col--old { background: var(--color-bg-card); }
.compare__col--new {
  background: linear-gradient(135deg, rgba(16,185,129,0.04), rgba(16,185,129,0.01));
  color: var(--color-text);
}
.compare__col p { margin: 0; }
.compare__col strong { color: var(--color-brand-dark); font-weight: 600; }
.compare__mark {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}
.compare__col--old .compare__mark {
  background: rgba(239,68,68,0.1);
  color: #EF4444;
}
.compare__col--new .compare__mark {
  background: rgba(16,185,129,0.15);
  color: var(--color-brand);
}

/* ==========================================================================
   Why section · 三支柱 (价值/商业/技术)
   ========================================================================== */
.section--why {
  background: var(--color-bg);
}
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pillar {
  position: relative;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  padding: 36px 30px 30px;
  transition: all 0.4s var(--ease-out);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.pillar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.pillar:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.pillar:hover::before { transform: scaleX(1); }

.pillar:nth-child(1)::before { background: linear-gradient(90deg, #10B981, #34D399); }
.pillar:nth-child(2)::before { background: linear-gradient(90deg, #3B82F6, #60A5FA); }
.pillar:nth-child(3)::before { background: linear-gradient(90deg, #8B5CF6, #A78BFA); }

.pillar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.pillar__badge {
  padding: 5px 14px;
  border-radius: var(--r-pill);
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.05em;
}
.pillar__badge--value { background: linear-gradient(135deg, #10B981, #059669); }
.pillar__badge--business { background: linear-gradient(135deg, #3B82F6, #1D4ED8); }
.pillar__badge--tech { background: linear-gradient(135deg, #8B5CF6, #6D28D9); }
.pillar__en {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  font-family: var(--font-mono);
}
.pillar__title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.pillar__intro {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 24px;
}
.pillar__list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}
.pillar__list li {
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.pillar__list-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.pillar__list-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-brand);
  flex-shrink: 0;
}
.pillar:nth-child(2) .pillar__list-label::before { background: var(--color-accent); }
.pillar:nth-child(3) .pillar__list-label::before { background: var(--color-purple); }
.pillar__list-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-left: 14px;
}
.pillar__metric {
  padding: 16px 18px;
  background: var(--color-bg-soft);
  border-radius: var(--r-md);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.pillar__metric-num {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-brand-dark);
}
.pillar:nth-child(2) .pillar__metric-num { color: #1D4ED8; }
.pillar:nth-child(3) .pillar__metric-num { color: #6D28D9; }
.pillar__metric-label {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Process section (服务流程)
   ========================================================================== */
.section--process {
  background: var(--color-bg-soft);
}
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.process::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-brand), var(--color-accent), var(--color-purple));
  opacity: 0.35;
  z-index: 0;
}
.process__step {
  position: relative;
  z-index: 1;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  padding: 28px 24px 24px;
  transition: all 0.3s var(--ease-out);
}
.process__step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.process__num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-light);
  font-family: var(--font-mono);
}
.process__icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-brand);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.process__step h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.process__step p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 16px;
}
.process__time {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(16,185,129,0.08);
  color: var(--color-brand-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r-pill);
}

/* ==========================================================================
   Trust section (信任背书)
   ========================================================================== */
.section--trust {
  background: var(--color-bg);
}
.trust-back {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.trust-back__item {
  padding: 28px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease-out);
}
.trust-back__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border);
}
.trust-back__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border-radius: var(--r-md);
  margin-bottom: 16px;
}
.trust-back__icon--green { background: rgba(16,185,129,0.1); }
.trust-back__icon--blue { background: rgba(59,130,246,0.1); }
.trust-back__icon--amber { background: rgba(245,158,11,0.1); }
.trust-back__icon--purple { background: rgba(139,92,246,0.1); }
.trust-back__item h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.trust-back__item p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}
.trust-back__band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.trust-back__band-item {
  padding: 24px;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--r-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
}
.trust-back__band-num {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.trust-back__band-num span {
  font-size: 0.55em;
  color: var(--color-brand-dark); /* 白底卡片上用深绿，保证可读 */
  margin-left: 2px;
}
.trust-back__band-label {
  font-size: 12px;
  color: rgba(11, 18, 32, 0.62); /* 白底卡片上用深色文字（原 rgba(255,255,255,0.65) 白字不可读） */
}

/* ==========================================================================
   Problem section
   ========================================================================== */
.section--problem {
  background: var(--color-bg);
}
.problem__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}
.problem__card {
  padding: 32px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease-out);
}
.problem__card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}
.problem__num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-brand);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.problem__title {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}
.problem__card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

.problem__solution {
  text-align: center;
  padding: 48px 32px;
  background: linear-gradient(135deg, rgba(16,185,129,0.06), rgba(59,130,246,0.06));
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: var(--r-xl);
}
.problem__solution-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r-pill);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.problem__solution-title {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.problem__solution p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 16px;
}

/* ==========================================================================
   Engine section
   ========================================================================== */
.section--engine {
  background: var(--color-bg);
}
.engine__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.engine__card {
  position: relative;
  padding: 40px 32px 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  transition: all 0.4s var(--ease-out);
  overflow: hidden;
}
.engine__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-brand), var(--color-brand-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.engine__card:hover { transform: translateY(-6px); border-color: var(--color-border); box-shadow: var(--shadow-lg); }
.engine__card:hover::before { transform: scaleX(1); }
.engine__card--graph::before { background: linear-gradient(90deg, #10B981, #34D399); }
.engine__card--agent::before { background: linear-gradient(90deg, #3B82F6, #60A5FA); }
.engine__card--hub::before { background: linear-gradient(90deg, #F59E0B, #FBBF24); }

.engine__visual {
  width: 200px;
  height: 200px;
  margin: 0 auto 24px;
  opacity: 0.85;
}
.engine__svg { width: 100%; height: 100%; }

.engine__num {
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-light);
  font-family: var(--font-mono);
}
.engine__name {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.engine__name-en {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-light);
}
.engine__desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 16px 0 20px;
}
.engine__list {
  border-top: 1px solid var(--color-border-light);
  padding-top: 16px;
}
.engine__list li {
  position: relative;
  padding-left: 20px;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}
.engine__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-brand);
  font-weight: 700;
}

/* ==========================================================================
   Workforce section
   ========================================================================== */
.section--workforce {
  background: var(--color-bg-soft);
}
.workforce__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 64px;
}
.workforce__service {
  padding: 28px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease-out);
}
.workforce__service:hover {
  transform: translateY(-4px);
  border-color: var(--color-brand);
  box-shadow: var(--shadow-md);
}
.workforce__service-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(16,185,129,0.05));
  border-radius: var(--r-md);
  margin-bottom: 16px;
  color: var(--color-brand);
}
.workforce__service h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.workforce__service p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

.workforce__coverage {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  padding: 48px;
}
.workforce__coverage-head {
  text-align: center;
  margin-bottom: 32px;
}
.workforce__coverage-head h3 {
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}
.workforce__coverage-head p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 15px;
}
.workforce__map {
  position: relative;
}
.world-map {
  width: 100%;
  height: auto;
  display: block;
}
.world-map__highlights circle { animation: highlightPulse 4s ease-in-out infinite; }
@keyframes highlightPulse {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.3; }
}

.world-map__legend {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.world-map__legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.world-map__legend-dot {
  width: 8px; height: 8px;
  background: var(--color-brand);
  border-radius: 50%;
}
.world-map__legend-dot--pulse {
  position: relative;
}
.world-map__legend-dot--pulse::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--color-brand);
  animation: pulseRing 2s ease-out infinite;
}
@keyframes pulseRing {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ==========================================================================
   Token section
   ========================================================================== */
.section--token {
  background: var(--color-bg);
}
.token__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.token__card {
  padding: 32px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  transition: all 0.3s var(--ease-out);
}
.token__card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.token__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(59,130,246,0.05));
  border-radius: var(--r-md);
  margin-bottom: 20px;
  color: var(--color-accent);
}
.token__card h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.token__card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* ==========================================================================
   Products section
   ========================================================================== */
.section--products {
  background: var(--color-bg-soft);
}
.products__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.product__card {
  position: relative;
  display: block;
  padding: 36px 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  transition: all 0.4s var(--ease-out);
  overflow: hidden;
}
.product__card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(16,185,129,0.05), transparent 50%);
  opacity: 0;
  transition: opacity 0.4s;
}
.product__card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: var(--color-border); }
.product__card:hover::after { opacity: 1; }

.product__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-text), var(--color-surface-2));
  color: #fff;
  border-radius: var(--r-md);
  margin-bottom: 20px;
  font-size: 24px;
  font-weight: 700;
}
.product__card--api .product__icon { background: linear-gradient(135deg, #10B981, #059669); }
.product__card--agent .product__icon { background: linear-gradient(135deg, #3B82F6, #1D4ED8); }
.product__card--hub .product__icon { background: linear-gradient(135deg, #F59E0B, #D97706); }
.product__card--agency .product__icon { background: linear-gradient(135deg, #8B5CF6, #6D28D9); }

.product__name {
  font-size: 26px;
  font-weight: 800;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}
.product__sub {
  font-size: 14px;
  color: var(--color-brand-dark);
  font-weight: 500;
  margin: 0 0 16px;
}
.product__desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 24px;
}
.product__meta {
  position: absolute;
  top: 36px;
  right: 32px;
  font-size: 12px;
  color: var(--color-text-light);
  font-family: var(--font-mono);
}
.product__arrow {
  font-size: 22px;
  color: var(--color-text);
  font-weight: 300;
  transition: transform 0.3s var(--ease-out);
}
.product__card:hover .product__arrow {
  transform: translateX(6px);
  color: var(--color-brand);
}

/* ==========================================================================
   Pyramid section
   ========================================================================== */
.section--pyramid {
  background: var(--color-surface);
  color: var(--color-text-on-dark);
}
.section--pyramid .section__title { color: var(--color-text-on-dark); }
.section--pyramid .section__desc { color: var(--color-text-on-dark-muted); }
.section--pyramid .section__eyebrow { color: var(--color-brand-light); }

.pyramid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.pyramid__layer {
  padding: 24px 32px;
  border-radius: var(--r-md);
  text-align: center;
  position: relative;
  transition: transform 0.3s var(--ease-out);
}
.pyramid__layer:hover { transform: scale(1.02); }

.pyramid__layer--1 {
  background: linear-gradient(135deg, #1F2937, #374151);
  margin-left: 0;
  width: 100%;
}
.pyramid__layer--2 {
  background: linear-gradient(135deg, #047857, #10B981);
  margin: 0 auto;
  width: 90%;
}
.pyramid__layer--3 {
  background: linear-gradient(135deg, #F59E0B, #FBBF24);
  color: var(--color-text);
  margin: 0 auto;
  width: 75%;
}
.pyramid__layer--4 {
  background: linear-gradient(135deg, #EC4899, #F472B6);
  margin: 0 auto;
  width: 60%;
}
.pyramid__layer-tag {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.85;
  margin-bottom: 6px;
}
.pyramid__layer h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Cases section
   ========================================================================== */
.section--cases {
  background: var(--color-bg);
}
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  transition: all 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
}
.case:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.case--featured {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.case--featured .case__tag { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7); }
.case--featured .case__desc { color: rgba(255,255,255,0.7); }
.case--featured .case__metric-label { color: rgba(255,255,255,0.7); }
.case--featured .case__metric-num { color: var(--color-bg); }
.case--featured .case__metric-num span { color: var(--color-brand-light); }

.case__brand {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.case__tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(16,185,129,0.1);
  color: var(--color-brand-dark);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r-pill);
  margin-bottom: 20px;
  align-self: flex-start;
}
.case__title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.case__desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 24px;
  flex: 1;
}
.case__metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid currentColor;
  border-top-color: var(--color-border-light);
}
.case--featured .case__metrics { border-top-color: rgba(255,255,255,0.15); }

.case__metric-num {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.case__metric-num span {
  font-size: 0.55em;
  color: var(--color-brand);
  margin-left: 2px;
}
.case__metric-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   Approach section
   ========================================================================== */
.section--approach {
  background: var(--color-bg-soft);
}
.approach__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.approach__tier {
  padding: 32px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
}
.approach__tier-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-brand);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r-pill);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}
.approach__tier h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.approach__tier ul li {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}
.approach__tier ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-brand);
  font-weight: 600;
}

/* ==========================================================================
   Team section
   ========================================================================== */
.section--team {
  background: var(--color-bg);
}
.team__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.member {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-xl);
  padding: 32px 24px;
  transition: all 0.3s var(--ease-out);
}
.member:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-border);
}
.member__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.member__role {
  font-size: 12px;
  color: var(--color-brand-dark);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.member__name {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.member__bio {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0 0 16px;
}
.member__highlights li {
  font-size: 12px;
  color: var(--color-text-muted);
  padding: 4px 0;
  padding-left: 14px;
  position: relative;
  line-height: 1.5;
}
.member__highlights li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--color-brand);
  font-weight: 700;
}

.team__formula {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 32px;
  background: var(--color-bg-soft);
  border-radius: var(--r-xl);
  font-size: 16px;
  font-weight: 600;
}
.team__formula-item {
  padding: 8px 18px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-pill);
}
.team__formula-op {
  font-size: 20px;
  color: var(--color-brand);
  font-weight: 700;
}
.team__formula-result {
  padding: 10px 22px;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--r-pill);
  font-weight: 700;
}

/* ==========================================================================
   Timeline section
   ========================================================================== */
.section--timeline {
  background: var(--color-bg-soft);
}
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 40px;
}
.timeline__line {
  position: absolute;
  left: 8px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-brand), var(--color-accent), var(--color-warning));
}
.timeline__item {
  position: relative;
  padding: 24px 32px 32px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  margin-bottom: 24px;
  transition: all 0.3s var(--ease-out);
}
.timeline__item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}
.timeline__dot {
  position: absolute;
  left: -38px;
  top: 32px;
  width: 18px;
  height: 18px;
  background: var(--color-brand);
  border-radius: 50%;
  border: 3px solid var(--color-bg-soft);
  box-shadow: 0 0 0 2px var(--color-brand);
}
.timeline__dot--future {
  background: var(--color-warning);
  box-shadow: 0 0 0 2px var(--color-warning);
}
.timeline__period {
  font-size: 12px;
  color: var(--color-brand-dark);
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.timeline__item h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.timeline__item ul li {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}
.timeline__item ul li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--color-brand);
  font-size: 8px;
  top: 8px;
}

/* ==========================================================================
   Funding section
   ========================================================================== */
.section--funding {
  background: linear-gradient(135deg, #064E3B, #065F46);
  color: var(--color-text-on-dark);
  position: relative;
  overflow: hidden;
}
.section--funding::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(16,185,129,0.3), transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
}
.section--funding .section__eyebrow { color: var(--color-brand-light); }
.section--funding .container { position: relative; }

.funding__wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.funding__title {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 16px 0 20px;
}
.funding__desc {
  font-size: 16px;
  color: var(--color-text-on-dark-muted);
  line-height: 1.65;
  margin: 0;
}
.funding__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.funding__stat {
  padding: 24px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--r-md);
}
.funding__stat-label {
  font-size: 12px;
  color: var(--color-text-on-dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.funding__stat-value {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-on-dark);
  line-height: 1.1;
}
.funding__stat-value span {
  font-size: 0.5em;
  color: var(--color-brand-light);
  margin-left: 4px;
}
.funding__uses h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--color-text-on-dark);
}
.funding__uses-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.funding__use {
  padding: 16px;
  background: rgba(255,255,255,0.04);
  border-radius: var(--r-md);
  border: 1px solid rgba(255,255,255,0.06);
}
.funding__use-bar {
  position: relative;
  height: 32px;
  background: rgba(255,255,255,0.08);
  border-radius: 6px;
  margin-bottom: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding-left: 14px;
}
.funding__use-bar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: var(--w, 50%);
  background: linear-gradient(90deg, var(--color-brand), var(--color-brand-light));
  border-radius: 6px;
}
.funding__use-bar span {
  position: relative;
  z-index: 1;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.02em;
}
.funding__use-detail {
  font-size: 13px;
  color: var(--color-text-on-dark-muted);
}

@media (max-width: 1100px) {
  .funding__wrap { grid-template-columns: 1fr; gap: 40px; }
}

/* ==========================================================================
   Market section
   ========================================================================== */
.market__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.market__grid .section__title { margin-bottom: 20px; }
.market__sources {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
  font-size: 12px;
  color: var(--color-text-light);
}
.market__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.market__stat {
  padding: 28px 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--r-lg);
  transition: all 0.3s;
}
.market__stat:hover {
  transform: translateY(-3px);
  border-color: var(--color-brand);
  box-shadow: var(--shadow-md);
}
.market__stat-num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 8px;
}
.market__stat-num span {
  font-size: 0.55em;
  color: var(--color-brand);
  margin-left: 2px;
  font-weight: 600;
}
.market__stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   Contact section
   ========================================================================== */
.section--contact {
  background: var(--color-surface);
  color: var(--color-text-on-dark);
  position: relative;
  overflow: hidden;
}
.section--contact::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16,185,129,0.15), transparent 70%);
  border-radius: 50%;
  filter: blur(60px);
}
.section--contact .container { position: relative; }

.contact__wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact__title {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 16px 0 24px;
}
.contact__sub {
  font-size: 16px;
  color: var(--color-text-on-dark-muted);
  line-height: 1.65;
  margin: 0 0 40px;
}
.contact__channels {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact__channel-label {
  font-size: 12px;
  color: var(--color-text-on-dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.contact__channel a {
  display: block;
  font-size: 18px;
  color: var(--color-text-on-dark);
  margin-bottom: 4px;
  transition: color 0.2s;
}
.contact__channel a:hover { color: var(--color-brand-light); }

.contact__offices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.contact__office {
  padding: 24px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--r-md);
}
.contact__office-tag {
  font-size: 11px;
  color: var(--color-brand-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}
.contact__office h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.contact__office p {
  font-size: 13px;
  color: var(--color-text-on-dark-muted);
  line-height: 1.5;
  margin: 0;
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact__form input,
.contact__form textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--r-md);
  color: var(--color-text-on-dark);
  font-size: 14px;
  transition: all 0.2s;
}
.contact__form input::placeholder,
.contact__form textarea::placeholder { color: var(--color-text-on-dark-muted); }
.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--color-brand);
  background: rgba(255,255,255,0.06);
}
.contact__form textarea { resize: vertical; min-height: 80px; }
.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.contact__form-note {
  font-size: 12px;
  color: var(--color-text-on-dark-muted);
  text-align: center;
  margin: 4px 0 0;
}
.btn--primary.btn--full {
  background: var(--color-brand);
  color: #fff;
  margin-top: 8px;
}
.btn--primary.btn--full:hover {
  background: var(--color-brand-light);
  box-shadow: 0 0 40px rgba(16,185,129,0.4);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--color-surface);
  color: var(--color-text-on-dark);
  padding: 64px 0 32px;
  border-top: 1px solid var(--color-border-dark);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 3fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border-dark);
}
.footer__brand p {
  margin: 20px 0 0;
  font-size: 14px;
  color: var(--color-text-on-dark-muted);
  line-height: 1.6;
  max-width: 280px;
}
.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer__col h4 {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-on-dark);
}
.footer__col a {
  display: block;
  font-size: 13px;
  color: var(--color-text-on-dark-muted);
  padding: 6px 0;
  transition: color 0.2s;
}
.footer__col a:hover { color: var(--color-brand-light); }
.footer__bottom {
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--color-text-on-dark-muted);
  flex-wrap: wrap;
  gap: 16px;
}
.footer__meta { display: flex; gap: 8px; }

/* ==========================================================================
   Reveal animations
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1199px) {
  .hero__inner { max-width: 720px; margin: 0 auto; text-align: center; }
  .hero__badge { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .hero__stats { margin-left: auto; margin-right: auto; }
}
@media (max-width: 1100px) {
  /* 右侧导航已收纳进 nav__menu（第 52 轮），桌面/移动统一由 ☰ 按钮展开 */
  .nav__menu { min-width: 240px; }
  .nav__brand-switch { margin-left: 12px; }
  .nav__brand-sub { display: none; }
  .nav__brand { padding: 6px 10px; font-size: 12px; }
  .hero__inner { max-width: 720px; }
  .problem__grid { grid-template-columns: repeat(2, 1fr); }
  .pillars { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process::before { display: none; }
  .trust-back { grid-template-columns: repeat(2, 1fr); }
  .trust-back__band { grid-template-columns: repeat(2, 1fr); }
  .compare__col { padding: 20px; }
  .compare__row { grid-template-columns: 1fr; }
  .compare__head { grid-template-columns: 1fr 1fr; }
  .engine__grid { grid-template-columns: 1fr; }
  .workforce__grid { grid-template-columns: repeat(2, 1fr); }
  .token__grid { grid-template-columns: repeat(2, 1fr); }
  .team__grid { grid-template-columns: repeat(2, 1fr); }
  .cases__grid { grid-template-columns: 1fr; }
  .approach__grid { grid-template-columns: 1fr; }
  .market__grid { grid-template-columns: 1fr; }
  .contact__wrap { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; gap: 32px; }
  .footer__cols { grid-template-columns: repeat(2, 1fr); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 640px) {
  .container { padding: 0 20px; }
  .hero { padding: 110px 20px 60px; }
  .nav__brand-switch { margin-left: 8px; padding: 3px; gap: 0; }
  .nav__brand { padding: 5px 8px; font-size: 11px; }
  .nav__brand-sub { display: none; }
  .nav__inner { gap: 16px; padding: 0 16px; }
  .hero__stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .problem__grid { grid-template-columns: 1fr; }
  .workforce__grid { grid-template-columns: 1fr; }
  .workforce__coverage { padding: 32px 20px; }
  .token__grid { grid-template-columns: 1fr; }
  .products__grid { grid-template-columns: 1fr; }
  .team__grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .trust-back { grid-template-columns: 1fr; }
  .trust-back__band { grid-template-columns: 1fr; }
  .contact__offices { grid-template-columns: 1fr; }
  .contact__form-row { grid-template-columns: 1fr; }
  .market__stats { grid-template-columns: 1fr; }
  .pyramid__layer--1, .pyramid__layer--2, .pyramid__layer--3, .pyramid__layer--4 {
    width: 100%;
  }
  .footer__cols { grid-template-columns: 1fr; gap: 24px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .nav__actions .btn { display: none; }
  /* 桌面端 nav__actions 隐藏、移动端 nav__link--mobile-only 显示（汉堡菜单内登录入口） */
  .nav__actions { display: none; }
  .nav__link--mobile-only { display: block; }
}
.nav__link--mobile-only { display: none; } /* 桌面端默认隐藏 */

/* ==========================================================================
   WHY CHINA (差异化区块)
   ========================================================================== */
.section--why { background: var(--color-bg-soft); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1020px;
  margin: 0 auto;
}
.why-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--r-lg);
  padding: 26px 24px;
  transition: all 0.3s var(--ease-out);
}
.why-item:hover {
  transform: translateY(-4px);
  border-color: var(--color-brand);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.why-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 14px;
  background: rgba(16,185,129,0.12);
}
.why-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.why-item p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin: 0;
}
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .why-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   COMPANY STRIP（企业定位信任带）
   ========================================================================== */
.company-strip {
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border-light);
  padding: 28px 0;
}
.company-strip__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.company-strip__main {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 720px;
}
.company-strip__logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-brand), #059669);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}
.company-strip__main p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0;
}
.company-strip__main strong { color: var(--color-text); }
.company-strip__meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--color-text-light);
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .company-strip__inner { flex-direction: column; align-items: flex-start; }
}

/* FAQ 区块（SEO/GEO 内容区） */
.faq-section {
  background: #0B1220;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0;
}
.faq-section__title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  color: var(--color-text, #F9FAFB);
}
.faq-section__sub {
  color: var(--color-text-muted, #9CA3AF);
  font-size: 13px;
  margin-bottom: 32px;
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.faq-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 18px 20px;
}
.faq-item h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text, #F9FAFB);
  margin-bottom: 8px;
  line-height: 1.5;
}
.faq-item p {
  font-size: 13px;
  color: var(--color-text-muted, #9CA3AF);
  line-height: 1.8;
  margin: 0;
}
@media (max-width: 720px) {
  .faq-grid { grid-template-columns: 1fr; }
}

/* 统一导航 active 态（2026-08-07 统一页头时补充） */
.nav__link--active {
  color: var(--color-brand-light, #6EE7B7) !important;
}

/* ==========================================================================
   Contact 表单交互增强（2026-08-08）
   1. 微信咨询入口（绿色圆角胶囊 + 微信图标）
   2. 提交按钮 loading 态（转圈）
   ========================================================================== */
.contact__wechat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: center;
  padding: 10px 18px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: 999px;
  color: #34D399;
  font: inherit;
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
  max-width: 100%;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.contact__wechat:hover {
  background: rgba(16, 185, 129, 0.2);
  border-color: rgba(16, 185, 129, 0.55);
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.25);
}
.contact__wechat svg { flex-shrink: 0; }
.contact__wechat-id {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #6EE7B7;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
}
.contact__wechat-hint { color: rgba(110, 231, 183, 0.75); }

/* 提交按钮 loading 态 */
.btn.is-loading {
  color: transparent !important;
  pointer-events: none;
  position: relative;
}
.btn.is-loading::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-spin 0.7s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   FAQ 区块增强（index + articles 共用，2026-08-08）
   1. 问号高亮徽标（Q）
   2. 底部数据来源链接
   ========================================================================== */
.faq-item h3 {
  position: relative;
  padding-left: 26px;
}
.faq-item h3::before {
  content: 'Q';
  position: absolute;
  left: 0;
  top: 2px;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  color: #34D399;
  background: rgba(16, 185, 129, 0.15);
  border-radius: 6px;
}
.faq-section__source {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12px;
  color: var(--color-text-muted, #9CA3AF);
  text-align: center;
}
.faq-section__source a {
  color: #6EE7B7;
  text-decoration: none;
}
.faq-section__source a:hover { text-decoration: underline; }