/* AI-CARGO — Apple-inspired light theme */
:root {
  --font: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
  --bg: #ffffff;
  --bg-elevated: #f5f5f7;
  --bg-muted: #f5f5f7;
  --bg-card: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-dark: #1d1d1f;
  --text-dark-secondary: #6e6e73;
  --accent: #0071e3;
  --accent-deep: #0071e3;
  --accent-light: #2997ff;
  --accent-glow: rgba(0, 113, 227, 0.2);
  --border: rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.1);
  --nav-glass: rgba(255, 255, 255, 0.8);
  --radius: 18px;
  --radius-lg: 28px;
  --nav-h: 52px;
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --max-w: 1080px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.47059;
  font-size: 17px;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

img, svg { display: block; max-width: 100%; }

.container {
  width: min(100% - 48px, var(--max-w));
  margin-inline: auto;
}

/* Cursor glow — desktop only */
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity 0.4s;
  mix-blend-mode: multiply;
}

@media (hover: hover) and (pointer: fine) {
  body:hover .cursor-glow { opacity: 0.25; }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background 0.5s var(--ease-out), backdrop-filter 0.5s;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: min(100% - 40px, 1200px);
  margin-inline: auto;
}

.nav.scrolled,
.page-sub .nav {
  background: var(--nav-glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  font-size: 21px;
  letter-spacing: -0.02em;
}

.brand-wordmark {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.logo-mark {
  background: linear-gradient(135deg, var(--accent), #5ac8fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-logo {
  display: block;
  flex-shrink: 0;
}

.brand-logo-square {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.nav-logo .brand-logo-square { width: 34px; height: 34px; }

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); opacity: 1; }

.nav-actions { display: flex; gap: 12px; align-items: center; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform 0.3s;
}

/* hidden 会被 display:flex 覆盖，必须显式隐藏 */
.nav-mobile {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  z-index: 1100;
  background: #fff;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--shadow-md);
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  padding: 0;
  overflow: hidden;
  overscroll-behavior: contain;
}

.nav-mobile:not([hidden]) {
  display: flex;
}

.nav-mobile-inner {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 24px;
  -webkit-overflow-scrolling: touch;
}

.nav-mobile-brand {
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.nav-mobile-brand .nav-logo {
  margin-bottom: 6px;
}

.nav-mobile-tagline {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-secondary);
}

.nav-mobile-groups {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav-mobile-group {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.nav-mobile-group:last-child {
  border-bottom: none;
}

.nav-mobile-group h4 {
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.nav-mobile-group a {
  display: block;
  padding: 7px 0;
  font-size: 16px;
  line-height: 1.35;
  color: var(--text);
}

.nav-mobile-cta {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 14px 20px !important;
  font-size: 16px;
  text-align: center;
}

body.nav-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: transform 0.2s var(--ease-spring), background 0.2s, box-shadow 0.2s;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent-deep);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent);
  opacity: 1;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text); opacity: 1; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover { background: rgba(0, 113, 227, 0.08); opacity: 1; }

.btn-lg { padding: 14px 28px; font-size: 17px; }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 48px) 24px 120px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0, 113, 227, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 90% 50%, rgba(90, 200, 250, 0.1), transparent),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(0, 113, 227, 0.06), transparent),
    linear-gradient(180deg, #fafafa 0%, #ffffff 60%, #f5f5f7 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
}

.hero-intro,
.hero-body,
.hero-body-inner {
  position: relative;
}

.hero-eyebrow {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(40px, 8vw, 80px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(40px);
  animation: heroLineIn 1s var(--ease-out) forwards;
}

.hero-title .line:nth-child(1) { animation-delay: 0.1s; }
.hero-title .line:nth-child(2) { animation-delay: 0.25s; }
.hero-title .line:nth-child(3) { animation-delay: 0.4s; }

.hero-title .accent {
  background: linear-gradient(90deg, #1d1d1f 0%, var(--accent) 45%, #5ac8fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes heroLineIn {
  to { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: clamp(17px, 2.5vw, 21px);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.5;
  opacity: 0;
  animation: fadeUp 1s 0.5s var(--ease-out) forwards;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
  opacity: 0;
  animation: fadeUp 1s 0.65s var(--ease-out) forwards;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 1s 0.8s var(--ease-out) forwards;
}

.stat { text-align: center; }

.stat-num {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.stat-suffix { font-size: 32px; color: var(--accent); }

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: -32px auto 0;
  padding: 0 24px 40px;
}

.hero-photo {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center center;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

/* AI 区块：全宽对称视觉 + 下方三列 */
.feature-ai {
  background: var(--bg);
  padding-top: 100px;
  padding-bottom: 100px;
}

.feature-ai .section-header {
  margin-bottom: 48px;
}

.feature-stage {
  width: 100%;
  margin-bottom: 48px;
  padding-inline: 20px;
  box-sizing: border-box;
}

.feature-stage-inner {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0;
  background: var(--bg-muted);
  border-radius: var(--radius-lg);
  overflow: hidden;
  line-height: 0;
}

.feature-stage-img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: clamp(300px, 48vw, 680px);
  max-height: min(72vh, 720px);
  object-fit: cover;
  object-position: center center;
  border-radius: var(--radius-lg);
}

.feature-ai .feature-grid {
  margin-top: 0;
}

/* Solutions — 系统对接 */
.solutions-section {
  background: linear-gradient(180deg, var(--bg) 0%, #f8fafc 50%, var(--bg) 100%);
  overflow: hidden;
}

.solutions-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: -24px 0 32px;
}

.solutions-pill {
  padding: 8px 16px;
  border-radius: 980px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-deep);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 113, 227, 0.2);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}

.solutions-eco-wrap {
  margin-bottom: 40px;
  text-align: center;
}

.solutions-eco-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.solutions-eco-map {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  background: var(--bg-card);
}

/* Intelligence */
.intelligence-section {
  padding-top: 0;
}

.intelligence-hero {
  width: min(calc(100% - 40px), var(--max-w));
  max-height: 360px;
  aspect-ratio: 21 / 9;
  margin-inline: auto;
  margin-bottom: 64px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.intelligence-hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius-lg);
}

.news-card {
  position: relative;
  padding-top: 48px;
}

.news-card-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.news-card-badge.alert {
  background: rgba(255, 59, 48, 0.12);
  color: #ff3b30;
}

.news-card-badge.warn {
  background: rgba(255, 149, 0, 0.12);
  color: #ff9500;
}

.news-card-badge.info {
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent-deep);
}

/* Subpage hero with media */
.page-hero-visual {
  padding-bottom: 0;
}

.page-hero-visual .page-hero-content {
  padding-bottom: 32px;
}

.page-hero-media {
  width: 100%;
  max-height: 380px;
  aspect-ratio: 21 / 9;
  overflow: hidden;
  border-block: 1px solid var(--border);
}

.page-hero-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.page-hero-visual .hero-sub {
  max-width: 560px;
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 18px;
}

.pricing-card li strong {
  color: var(--text);
}

.ecosystem-visual {
  margin-bottom: 40px;
}

.illus-wide,
.illus-screenshot,
.illus-photo {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.panel-visual-img {
  padding: 16px;
  background: var(--bg-elevated);
}

.panel-visual-img .illus-photo {
  border-radius: var(--radius);
}

.join-photo {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  z-index: 2;
}

/* PC：配图全屏背景，文案叠在左侧 */
@media (min-width: 735px) {
  .hero {
    align-items: center;
    justify-content: flex-start;
    padding: calc(var(--nav-h) + 56px) max(48px, calc((100vw - 1200px) / 2 + 48px)) 100px;
  }

  .hero-visual {
    position: absolute;
    inset: 0;
    z-index: 0;
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    pointer-events: none;
  }

  .hero-photo {
    width: 100%;
    height: 100%;
    aspect-ratio: unset;
    object-fit: cover;
    object-position: 72% center;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }

  .hero-bg {
    z-index: 1;
  }

  .hero-gradient {
    background:
      linear-gradient(
        100deg,
        rgba(245, 245, 247, 0.98) 0%,
        rgba(245, 245, 247, 0.94) 34%,
        rgba(245, 245, 247, 0.72) 48%,
        rgba(245, 245, 247, 0.2) 62%,
        transparent 78%
      ),
      linear-gradient(180deg, rgba(255, 255, 255, 0.5) 0%, transparent 28%),
      radial-gradient(ellipse 50% 60% at 85% 45%, rgba(90, 200, 250, 0.12), transparent);
  }

  .hero-content {
    z-index: 2;
    flex: 0 1 auto;
    width: min(520px, 44vw);
    max-width: 520px;
    margin: 0;
    text-align: left;
  }

  .hero-body {
    position: static;
  }

  .hero-body-inner {
    position: relative;
    z-index: 2;
  }

  .hero-sub {
    margin-left: 0;
    margin-right: 0;
    max-width: none;
    text-align: left;
  }

  .hero-cta {
    justify-content: flex-start;
  }

  .hero-stats {
    justify-content: flex-start;
    gap: 40px;
  }

  .hero-scroll-hint {
    z-index: 2;
  }
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Marquee */
.showcase {
  padding: 20px 0;
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
  overflow: hidden;
}

.showcase-track {
  display: flex;
  gap: 32px;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
}

.showcase-track span:nth-child(odd) { color: var(--text); }

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

/* Sections */
.section {
  padding: 120px 0;
  position: relative;
}

.section-dark { background: var(--bg-muted); }

.section-muted {
  background: var(--bg-muted);
  color: var(--text);
}

.section-muted .eyebrow { color: var(--accent-deep); }
.section-muted .section-desc,
.section-muted .hero-sub { color: var(--text-secondary); }
.section-muted .section-header h2 { color: var(--text); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-top: 12px;
}

.section-desc {
  margin-top: 16px;
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 560px;
  margin-inline: auto;
}

.eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(48px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.12s; }
.reveal[data-delay="2"] { transition-delay: 0.24s; }

/* Feature cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-out), border-color 0.4s, box-shadow 0.4s;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 113, 227, 0.25);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.feature-card p { color: var(--text-secondary); font-size: 15px; }

/* Service tabs */
.service-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.tab {
  padding: 10px 22px;
  border-radius: 980px;
  border: 1px solid transparent;
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-secondary);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.tab:hover { color: var(--text); }

.tab.active {
  background: var(--accent-deep);
  color: #fff;
}

.service-panels .panel {
  display: none;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 48px);
  align-items: center;
  animation: panelIn 0.5s var(--ease-out);
}

.service-panels .panel.active {
  display: grid;
}

.panel-showcase {
  width: 100%;
  aspect-ratio: 16 / 10;
  max-height: 320px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  line-height: 0;
}

.panel-showcase-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.panel-copy-side {
  text-align: left;
  padding: 8px 0;
}

.panel-copy-side h3 {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--text);
}

.panel-lead {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.panel-lead strong {
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 19px;
}

.panel-copy-side li {
  position: relative;
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: 18px;
  padding-left: 22px;
  color: var(--text-secondary);
}

.panel-copy-side li strong {
  color: var(--text);
  font-weight: 600;
}

.panel-copy-side li::before {
  width: 8px;
  height: 8px;
  top: 11px;
  background: var(--accent-deep);
}

.panel-tags {
  list-style: none;
  display: flex !important;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 10px;
  margin-top: 8px;
  padding-left: 0 !important;
}

.panel-tags li {
  padding: 10px 18px;
  border-radius: 980px;
  background: rgba(0, 113, 227, 0.08);
  border: 1px solid rgba(0, 113, 227, 0.15);
  color: var(--accent-deep);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 0;
}

.panel-tags li::before { display: none; }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-visual {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mock-query { width: 100%; max-width: 320px; }

.mock-row {
  margin-bottom: 16px;
}

.mock-row label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.mock-row input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
}

.mock-btn {
  width: 100%;
  margin-top: 8px;
  padding: 14px;
  border: none;
  border-radius: 12px;
  background: var(--accent-deep);
  color: #fff;
  font-weight: 600;
  font-family: inherit;
  cursor: default;
}

.mock-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
}

.mini-card {
  padding: 24px;
  background: rgba(0, 113, 227, 0.08);
  border: 1px solid rgba(0, 113, 227, 0.12);
  border-radius: var(--radius);
  text-align: center;
  font-weight: 500;
  font-size: 14px;
}

.mock-stat-ring {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 3px solid var(--accent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  animation: ringPulse 3s ease-in-out infinite;
}

.ring-value { font-size: 48px; font-weight: 700; color: var(--accent); }
.ring-label { font-size: 13px; color: var(--text-secondary); }

@keyframes ringPulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { box-shadow: 0 0 40px 8px var(--accent-glow); }
}

.mock-policy {
  text-align: center;
  width: 100%;
}

.mock-policy span { display: block; font-size: 13px; color: var(--text-secondary); }
.policy-num { font-size: 18px; font-weight: 600; margin: 12px 0 20px; letter-spacing: 0.05em; }

.panel-copy ul { list-style: none; }

.panel-copy li {
  position: relative;
}

.panel-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  border-radius: 50%;
  background: var(--accent-deep);
}

.panel-copy p { color: var(--text-secondary); }

/* Bento — 2×2 对称网格 */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  align-items: stretch;
}

.bento-card {
  display: flex;
  flex-direction: column;
  padding: 28px 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s;
}

.bento-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.bento-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.bento-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 113, 227, 0.1);
  color: var(--accent-deep);
}

.bento-icon svg {
  width: 24px;
  height: 24px;
}

.bento-tag {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.bento-card h3 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 12px;
  color: var(--text);
}

.bento-desc {
  flex: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.bento-kicker {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
}

.bento-kicker-label {
  display: inline-block;
  margin-right: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

/* News */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.news-card time {
  font-size: 13px;
  color: var(--text-dark-secondary);
}

.news-card h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 12px 0;
  color: var(--text-dark);
  line-height: 1.35;
}

.news-card p {
  font-size: 14px;
  color: var(--text-dark-secondary);
  margin-bottom: 16px;
}

.news-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-deep);
}

/* CTA */
.cta-section {
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, #eef6ff 100%);
}

.cta-section h2 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.cta-section > .container > p {
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 32px;
}

.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 640px;
  margin: 0 auto 20px;
}

.cta-form input {
  flex: 1;
  min-width: 180px;
  padding: 14px 20px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  box-shadow: var(--shadow-sm);
}

.cta-form input::placeholder { color: var(--text-secondary); }

.cta-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.cta-note { font-size: 14px; color: var(--text-secondary); }

/* Footer */
.footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg-elevated);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-col a:hover { color: var(--text); opacity: 1; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
}

/* Sub pages */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 80px) 24px 100px;
  min-height: 50vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 30% 20%, rgba(0, 113, 227, 0.1), transparent),
    linear-gradient(180deg, #f5f5f7, #ffffff);
}

.page-hero-content { position: relative; z-index: 1; }

.page-hero h1 {
  font-size: clamp(44px, 7vw, 72px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.page-hero .accent {
  background: linear-gradient(90deg, var(--accent), #5ac8fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.4s, box-shadow 0.4s;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.pricing-card.featured {
  border-color: rgba(0, 113, 227, 0.35);
  background: linear-gradient(180deg, rgba(0, 113, 227, 0.06) 0%, var(--bg-card) 100%);
  box-shadow: 0 8px 40px var(--accent-glow);
}

.pricing-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 980px;
  background: var(--accent-deep);
  color: #fff;
}

.pricing-tier {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.pricing-card h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pricing-card ul {
  list-style: none;
  flex: 1;
  margin-bottom: 28px;
}

.pricing-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-card .btn { width: 100%; }

/* Support grid */
.support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.support-num {
  font-size: 48px;
  font-weight: 700;
  color: rgba(0, 113, 227, 0.15);
  line-height: 1;
  margin-bottom: 16px;
}

.support-item h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.support-item p { color: var(--text-secondary); font-size: 15px; }

/* About */
.about-intro { max-width: 720px; }

.about-intro h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.about-intro .lead {
  font-size: 21px;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 20px;
}

.about-intro p { color: var(--text-secondary); margin-bottom: 16px; }

.timeline {
  max-width: 640px;
  margin-inline: auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  position: relative;
}

.section-muted .timeline-item time {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-deep);
}

.timeline-item h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.timeline-item p { font-size: 15px; color: var(--text-dark-secondary); }

.timeline-future {
  border: none;
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.08), transparent);
  border-radius: var(--radius);
  padding: 32px;
  margin-top: 16px;
}

.join-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.join-copy h2 {
  font-size: 40px;
  font-weight: 700;
  margin: 12px 0 20px;
}

.join-copy p { color: var(--text-secondary); margin-bottom: 12px; }

.join-email { margin-top: 24px; font-size: 17px; }

.join-orbit {
  width: 280px;
  height: 280px;
  margin: auto;
  position: relative;
  border: 1px solid var(--border);
  border-radius: 50%;
  animation: orbitSpin 20s linear infinite;
}

.join-orbit span {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--accent);
}

.join-orbit span:nth-child(1) { top: -6px; left: 50%; transform: translateX(-50%); }
.join-orbit span:nth-child(2) { bottom: 20%; right: -6px; }
.join-orbit span:nth-child(3) { bottom: 20%; left: -6px; }

@keyframes orbitSpin {
  to { transform: rotate(360deg); }
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-grid h2 { font-size: 32px; margin-bottom: 24px; }

.contact-list { list-style: none; }

.contact-list li {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.contact-list strong {
  display: block;
  color: var(--text);
  font-size: 13px;
  margin-bottom: 4px;
}

.partners { color: var(--text-secondary); line-height: 1.6; }

/* Responsive */
@media (min-width: 1069px) {
  .nav-mobile { display: none !important; }
}

@media (max-width: 1068px) {
  .nav-links, .nav-actions .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .feature-grid,
  .news-grid,
  .pricing-grid,
  .support-grid { grid-template-columns: 1fr; }

  .service-panels .panel.active {
    grid-template-columns: 1fr;
  }

  .panel-showcase { max-height: 260px; }

  .bento-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .join-block, .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 734px) {
  .section { padding: 80px 0; }

  /* 移动端：背景融合；高度随内容，不必撑满一屏 */
  .hero {
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 0;
    padding: calc(var(--nav-h) + 40px) 20px 24px;
    overflow: hidden;
  }

  .hero-visual {
    position: absolute;
    inset: 0;
    z-index: 0;
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: none;
    pointer-events: none;
  }

  .hero-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 38%;
    border: none;
    border-radius: 0;
    box-shadow: none;
    aspect-ratio: unset;
  }

  .hero-bg {
    z-index: 1;
    opacity: 1;
  }

  .hero-gradient {
    background:
      linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 249, 252, 0.82) 16%,
        rgba(245, 245, 247, 0.68) 36%,
        rgba(245, 245, 247, 0.52) 58%,
        rgba(245, 245, 247, 0.62) 100%
      ),
      radial-gradient(ellipse 130% 70% at 50% 88%, rgba(90, 200, 250, 0.18), transparent 58%);
  }

  #hero-canvas {
    display: none;
  }

  .hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 0;
    text-align: center;
  }

  .hero-content.reveal {
    opacity: 1;
    transform: none;
  }

  .hero-intro,
  .hero-body,
  .hero-body-inner {
    background: none;
    border-radius: 0;
    overflow: visible;
    position: relative;
    margin: 0;
    min-height: 0;
    isolation: auto;
  }

  .hero-intro {
    padding: 0 4px 14px;
  }

  .hero-body::after {
    display: none;
  }

  .hero-body-inner {
    padding: 0 4px;
  }

  .hero-eyebrow {
    font-size: 10px;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
    text-align: center;
  }

  .hero-title {
    font-size: clamp(32px, 8.8vw, 42px);
    line-height: 1.14;
    margin-bottom: 0;
    text-align: center;
    letter-spacing: -0.02em;
  }

  .hero-title .line {
    transform: translateY(16px);
  }

  .hero-sub,
  .hero-cta,
  .hero-stats {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .hero-sub {
    font-size: 15px;
    line-height: 1.6;
    margin: 0 auto 22px;
    max-width: 22em;
    text-align: center;
    color: var(--text-secondary);
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    width: min(100%, 300px);
    margin: 0 auto 20px;
  }

  .hero-cta .btn-lg {
    width: 100%;
    padding: 14px 20px;
    font-size: 16px;
  }

  .hero-cta .btn-outline {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  .hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px 8px;
    width: 100%;
    max-width: 360px;
    margin: 0 auto;
    padding-top: 4px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  .stat { text-align: center; }
  .stat-num { font-size: 24px; }
  .stat-suffix { font-size: 17px; }
  .stat-label { font-size: 10px; line-height: 1.3; }

  .hero-scroll-hint {
    position: relative;
    bottom: auto;
    left: auto;
    transform: none;
    margin: 18px auto 0;
    padding: 0;
    font-size: 10px;
    z-index: 2;
    color: var(--text-secondary);
  }

  .scroll-line { height: 22px; }

  /* AI 仪表盘区块：收紧上下留白 */
  .feature-ai {
    padding-top: 40px;
    padding-bottom: 48px;
  }

  .feature-ai .section-header {
    margin-bottom: 20px;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .section-header h2 {
    margin-top: 8px;
    font-size: clamp(28px, 7.5vw, 36px);
  }

  .feature-stage {
    padding-inline: 16px;
    margin-bottom: 20px;
  }

  .feature-stage-inner {
    width: 100%;
    background: var(--bg-muted);
  }

  .feature-stage-img {
    width: 100%;
    height: auto;
    min-height: 0;
    max-height: none;
    aspect-ratio: unset;
    object-fit: contain;
    object-position: center center;
  }

  #services.section {
    padding-top: 48px;
    padding-bottom: 56px;
  }

  #services .section-header {
    margin-bottom: 20px;
  }

  .service-tabs {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin: 0 -4px 24px;
    padding: 2px 4px 6px;
    gap: 8px;
  }

  .service-tabs::-webkit-scrollbar {
    display: none;
  }

  .tab {
    flex-shrink: 0;
    font-size: 13px;
    padding: 8px 16px;
  }

  .service-panels .panel.active {
    gap: 20px;
  }

  .panel-showcase {
    order: 2;
    max-height: none;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    isolation: isolate;
  }

  .panel-copy-side {
    order: 1;
  }

  .panel-showcase-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
  }

  .footer {
    padding: 36px 0 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px 16px;
    margin-bottom: 24px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    padding-bottom: 16px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--border);
  }

  .footer-brand .nav-logo {
    align-items: center;
  }

  .footer-brand p {
    margin-top: 8px;
    font-size: 13px;
    line-height: 1.5;
    max-width: 22em;
  }

  .footer-col h4 {
    margin-bottom: 8px;
    font-size: 11px;
  }

  .footer-col a {
    margin-bottom: 4px;
    font-size: 14px;
    line-height: 1.45;
  }

  .footer-col a:last-child {
    margin-bottom: 0;
  }

  .footer-col:last-child {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 16px;
    font-size: 11px;
    line-height: 1.4;
  }

  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .showcase-track { animation: none; }
  .reveal { opacity: 1; transform: none; }
}