:root {
  --bg-page: #fafaf7;
  --bg-card: #ffffff;
  --bg-hover: #f3f3ef;
  --text: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-tertiary: #9a9a9a;
  --border: #e8e8e0;
  --border-hover: #d0d0c8;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-light: #eff6ff;
  --accent-soft: #dbeafe;
  --font-cn: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --font-en: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; background: var(--bg-page); }

body {
  background: var(--bg-page);
  color: var(--text);
  font-family: var(--font-cn);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 48px; height: 56px;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(0,0,0,0.25);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: background 0.3s, border-color 0.3s;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: #ffffff;
  font-weight: 600; font-size: 16px; letter-spacing: -0.3px;
}
.nav-logo-img {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 700;
  position: relative; overflow: hidden;
}
.nav-logo-img::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.25));
  border-radius: 8px;
}
.nav-links {
  display: flex; align-items: center; gap: 36px; list-style: none;
}
.nav-links a {
  text-decoration: none !important; color: rgba(255,255,255,0.55) !important;
  font-size: 13px; font-weight: 400; letter-spacing: -0.2px;
  transition: color 0.3s;
}
.nav-links a:hover, .nav-links a:visited, .nav-links a:active { color: #ffffff !important; text-decoration: none !important; }
.nav-cta {
  padding: 8px 20px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px) saturate(180%);
  -webkit-backdrop-filter: blur(8px) saturate(180%);
  color: #fff; border: 1px solid rgba(255,255,255,0.18);
  border-radius: 100px;
  font-size: 13px; font-weight: 500; cursor: pointer;
  font-family: var(--font-cn); letter-spacing: -0.2px;
  transition: all 0.3s;
}
.nav-cta:hover {
  background: rgba(255,255,255,0.22);
  transform: translateY(-1px);
}

/* 汉堡菜单按钮 */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 8px; z-index: 1001;
}
.nav-toggle span {
  width: 22px; height: 2px; background: rgba(255,255,255,0.7);
  border-radius: 1px; transition: all 0.3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉菜单 */
.nav-drawer {
  position: fixed; top: 56px; left: 0; right: 0; bottom: 0;
  background: var(--bg-card); z-index: 999;
  display: flex; flex-direction: column;
  padding: 32px 24px; gap: 8px;
  transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}
.nav-drawer.open { transform: translateX(0); }
.nav-drawer a {
  text-decoration: none; color: var(--text);
  font-size: 18px; font-weight: 500; letter-spacing: -0.3px;
  padding: 16px 0; border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.nav-drawer a:active { color: var(--accent); }
.nav-drawer .drawer-cta {
  margin-top: 24px; padding: 14px; text-align: center;
  background: var(--accent); color: #fff; border-radius: 100px;
  border: none; font-size: 15px; font-weight: 500;
  font-family: var(--font-cn);
}
.nav-drawer-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.3);
  z-index: 998; opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.nav-drawer-overlay.show { opacity: 1; pointer-events: auto; }

.hero {
  min-height: 100vh; display: flex;
  align-items: flex-end;
  text-align: left; padding: 0 48px 14vh;
  position: relative; overflow: hidden;
  background: #0a0a0a;
}
  /* Hero 背景视频 */
.hero-video-bg {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover; z-index: 0;
  transform: scale(1.03);
  transition: transform 1.4s ease;
  will-change: transform; /* promote scale animation to its own GPU layer (no repaint) */
  backface-visibility: hidden;
}
.hero-bg-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 0%, rgba(0,0,0,0.35) 40%, rgba(0,0,0,0.15) 60%, transparent 80%);
  z-index: 1;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 720px;
  margin-bottom: 0;
}
.hero-badge {
  display: none;
}
.hero-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #22c55e;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(2); }
}
.hero-title {
  font-size: clamp(48px, 7vw, 88px);
  font-weight: 700; letter-spacing: -2.5px;
  line-height: 1.08; margin-bottom: 20px;
  position: relative; z-index: 1;
  color: #ffffff;
}
.hero-title .accent {
  color: #ffffff;
}
.hero-subtitle {
  font-size: 19px; color: rgba(255,255,255,0.6);
  max-width: 480px; line-height: 1.65;
  font-weight: 300; position: relative; z-index: 1;
  margin-bottom: 40px;
}
.hero-features {
  display: none;
}
.hero-feature {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px; color: var(--text-secondary);
  font-weight: 400;
  transition: all 0.3s;
}
.hero-feature:hover {
  border-color: var(--border-hover);
  background: var(--bg-hover);
  color: var(--text);
}
.hero-feature .icon {
  width: 20px; height: 20px;
  border-radius: 6px;
  background: var(--accent-soft);
  display: flex; align-items: center;
  justify-content: center;
  font-size: 10px; color: var(--accent);
}
.hero-actions {
  display: flex; gap: 14px;
  position: relative; z-index: 1;
}
.btn-primary {
  padding: 14px 32px;
  background: rgba(37,99,235,0.14);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  color: #fff; border: 1px solid rgba(255,255,255,0.16);
  border-radius: 100px;
  font-size: 15px; font-weight: 500; cursor: pointer;
  font-family: var(--font-cn); letter-spacing: -0.3px;
  transition: all 0.3s;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.10), 0 2px 8px rgba(37,99,235,0.10);
}
.btn-primary:hover {
  background: rgba(37,99,235,0.24);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 4px 16px rgba(37,99,235,0.18);
}
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none;
  padding: 14px 32px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  color: var(--text); border: 1px solid rgba(255,255,255,0.10);
  border-radius: 100px; font-size: 15px; font-weight: 400;
  cursor: pointer; font-family: var(--font-cn);
  letter-spacing: -0.3px; transition: all 0.3s;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.20);
  background: rgba(255,255,255,0.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.10);
}

/* Hero 产品大图 — 白底版下显示 */
.hero-showcase {
  display: none;
}
.hero-img {
  width: 100%; aspect-ratio: 16/8; object-fit: cover; display: block;
}

/* Hero 白底背景下的按钮覆盖 → 改为深色电影风 */
.hero .btn-primary {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 2px 12px rgba(0,0,0,0.3);
}
.hero .btn-primary:hover {
  background: rgba(255,255,255,0.22);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 6px 20px rgba(0,0,0,0.4);
}
.hero .btn-outline {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  color: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: none;
}
.hero .btn-outline:hover {
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.05);
}

/* ===== SECTION COMMON ===== */
.section-wrap { max-width: 1280px; margin: 0 auto; padding: 140px 48px; }
.section-label {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 3px;
  color: var(--accent); margin-bottom: 16px;
}
.section-title {
  font-size: clamp(36px, 5vw, 56px); font-weight: 700;
  letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 20px;
}
.section-desc {
  font-size: 18px; color: var(--text-secondary);
  max-width: 500px; line-height: 1.7; font-weight: 300;
}

/* ===== 区块内联「了解更多」入口 ===== */
.section-more {
  margin-top: 48px;
  text-align: center;
}
.section-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.3s ease, color 0.3s ease;
}
.section-more a::after {
  content: "\2192";
  font-size: 16px;
  transition: transform 0.3s ease;
}
.section-more a:hover {
  color: var(--accent-hover);
  gap: 10px;
}
.section-more a:hover::after {
  transform: translateX(3px);
}

/* ===== CAPABILITY HERO (全屏视频能力叙事区) ===== */
.cap-hero {
  position: relative; min-height: 92vh; display: flex;
  align-items: flex-end; justify-content: flex-start; text-align: left;
  padding: 0 48px 14vh; overflow: hidden; background: #0a0a0a;
}
.cap-video-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 0; transform: scale(1.03);
  transition: transform 1.4s ease; will-change: transform; backface-visibility: hidden;
}
.cap-bg-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to bottom, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.38) 50%, rgba(0,0,0,0.72) 100%);
}
.cap-content { position: relative; z-index: 2; max-width: 720px; }
.cap-title {
  font-size: clamp(48px, 7vw, 88px); font-weight: 700;
  letter-spacing: -2.5px; line-height: 1.08; color: #fff; margin-bottom: 20px;
}
.cap-sub {
  font-size: 19px; color: rgba(255,255,255,0.6); font-weight: 300;
  max-width: 480px; margin-bottom: 40px; line-height: 1.65;
}
.cap-hero .btn-primary {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 2px 12px rgba(0,0,0,0.3);
}
.cap-hero .btn-primary:hover {
  background: rgba(255,255,255,0.22);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15), 0 6px 20px rgba(0,0,0,0.4);
}
.cap-hero .btn-outline {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  color: rgba(255,255,255,0.55);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: none;
}
.cap-hero .btn-outline:hover {
  color: rgba(255,255,255,0.85);
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.05);
}
.cap-actions { display: flex; gap: 14px; justify-content: flex-start; }

/* 视频高清叠层：与即时档同几何、初始透明，缓冲就绪后交叉淡入（消除换源顿挫） */
.video-hd-layer { opacity: 0; z-index: 0; transition: opacity .55s ease; }

/* ===== CREATION HUB (创作中枢 · 纯矢量图标) ===== */
.creation-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px; margin-top: 64px;
}
.creation-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 32px 28px; transition: all 0.4s;
  display: flex; flex-direction: column;
}
.creation-card:hover {
  transform: translateY(-4px); border-color: var(--border-hover);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.creation-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--accent-light); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.creation-icon svg {
  width: 24px; height: 24px; stroke: var(--accent); fill: none; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.creation-stage {
  display: inline-block; align-self: flex-start;
  font-size: 11px; letter-spacing: 0.5px; color: var(--accent);
  background: var(--accent-light); padding: 4px 12px; border-radius: 100px;
  margin-bottom: 14px;
}
.creation-card h4 {
  font-size: 18px; font-weight: 700; letter-spacing: -0.3px;
  margin-bottom: 10px; color: var(--text);
}
.creation-card p {
  font-size: 14px; color: var(--text-secondary); line-height: 1.7; font-weight: 300; margin: 0;
}

/* 创作中枢 / 能力区 响应式 */
@media (max-width: 1024px) {
  .creation-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .cap-hero { min-height: auto; padding: 100px 24px; }
  .cap-title { font-size: clamp(40px, 7vw, 64px); letter-spacing: -2px; }
  .cap-sub { font-size: 17px; max-width: 420px; margin-bottom: 32px; }
  .creation-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 40px; }
  .creation-card { padding: 28px 22px; }
}
@media (max-width: 480px) {
  .cap-hero { padding: 80px 18px; }
  .cap-title { font-size: clamp(26px, 7vw, 38px); letter-spacing: -0.8px; line-height: 1.2; }
  .cap-sub { font-size: 13px; line-height: 1.5; max-width: 100%; }
  .creation-card { padding: 24px 18px; }
}

/* ===== STATS BANNER ===== */
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stat-cell {
  padding: 56px 32px; text-align: center;
  border-right: 1px solid var(--border);
  background: var(--bg-card);
}
.stat-cell:last-child { border-right: none; }
.stat-num {
  font-family: var(--font-en); font-size: clamp(36px, 5vw, 56px);
  font-weight: 800; letter-spacing: -1.5px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-desc { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

/* ===== PAIN POINTS — Apple Watch 风格竖向卡片 ===== */
.pain-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 20px; margin-top: 60px;
}
.pain-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 24px; padding: 36px 32px 32px;
  transition: all 0.4s; position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}
.pain-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.pain-badge {
  display: inline-flex; align-self: flex-start;
  padding: 5px 14px; border-radius: 100px;
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.5px; margin-bottom: 28px;
  background: var(--accent-light); color: var(--accent);
  white-space: nowrap;
}
.pain-card h3 {
  font-size: 26px; font-weight: 700; letter-spacing: -0.8px;
  line-height: 1.3; margin-bottom: 14px; color: var(--text);
}
.pain-card p {
  font-size: 13px; color: var(--text-secondary);
  line-height: 1.8; font-weight: 300; margin: 0;
}
.pain-card .pain-divider {
  width: 32px; height: 2px; border-radius: 1px;
  background: var(--border); margin-top: auto; margin-bottom: 0;
  transition: all 0.4s;
}
.pain-card:hover .pain-divider { background: var(--accent); width: 48px; }

/* ===== SOLUTION — 横向滚动卡片 ===== */
.solution-scroll {
  margin-top: 60px; overflow-x: auto; overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 20px;
  scrollbar-width: none;
}
.solution-scroll::-webkit-scrollbar { display: none; }
.solution-track {
  display: flex; gap: 20px; min-width: max-content;
}
.solution-card {
  flex: 0 0 280px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 40px 32px; transition: all 0.4s;
}
.solution-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.solution-card .step-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent-light); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; font-family: var(--font-en);
  margin-bottom: 24px;
}
.solution-card h4 { font-size: 17px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 8px; }
.solution-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; font-weight: 300; }

/* Solution 滚动渐变提示 */
.solution-fade {
  position: relative;
}
.solution-fade::after {
  content: ''; position: absolute; top: 0; right: 0; bottom: 0;
  width: 80px; pointer-events: none;
  background: linear-gradient(to right, transparent, var(--bg-page));
}

/* ===== FEATURES — 全宽左右布局 + 产品截图 ===== */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; border-bottom: 1px solid var(--border);
  min-height: 560px;
}
.feature-row:last-child { border-bottom: none; }
.feature-text-side {
  padding: 80px; max-width: 520px; margin: 0 auto;
}
.feature-media-side {
  aspect-ratio: 4/3; position: relative; overflow: hidden;
  background: var(--bg-card); border-left: 1px solid var(--border);
}
.feature-row.reverse .feature-media-side {
  border-left: none; border-right: 1px solid var(--border);
}
.feature-label {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 3px;
  color: var(--accent); margin-bottom: 16px;
}
.feature-text-side h2 {
  font-size: clamp(28px, 4vw, 44px); font-weight: 700;
  letter-spacing: -1px; line-height: 1.15; margin-bottom: 16px;
}
.feature-text-side p {
  font-size: 16px; color: var(--text-secondary);
  line-height: 1.8; font-weight: 300;
}

.feature-media-side .video-tag {
  position: absolute; top: 12px; left: 12px;
  padding: 4px 10px; border-radius: 100px;
  background: var(--accent-light); color: var(--accent);
  font-size: 10px; font-weight: 600; letter-spacing: 0.5px;
  font-family: var(--font-en); z-index: 2;
}
.feature-media-side.video-display { position: relative; min-height: 300px; }
.feature-media-side.video-display video {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%; object-fit: cover; display: block;
  border-radius: 14px;
}
/* 视频播放按钮（autoplay 被阻止时显示） */
.video-play-btn {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(37, 99, 235, 0.92);
  display: none; align-items: center; justify-content: center;
  cursor: pointer; z-index: 5; border: none;
  transition: transform 0.2s;
}
.video-play-btn::after {
  content: ''; width: 0; height: 0;
  border-left: 18px solid #fff; border-top: 12px solid transparent; border-bottom: 12px solid transparent;
  margin-left: 4px;
}
.video-display.show-play .video-play-btn { display: flex; }
.video-play-btn:active { transform: translate(-50%, -50%) scale(0.9); }

/* ===== PROJECT FEED — Feature 01 横屏浮动项目卡（双行反向） ===== */
.project-feed {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--bg-card) 0%, #f5f5f1 100%);
  display: flex; flex-direction: column; gap: 14px;
  padding: 22px 0;
  aspect-ratio: auto;
}
.project-feed-track {
  display: flex; gap: 16px; padding: 0 28px;
  width: max-content; will-change: transform;
}
/* Animation handled by JS requestAnimationFrame for cross-browser reliability */
@keyframes feed-r2l { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@keyframes feed-l2r { 0% { transform: translateX(-50%); } 100% { transform: translateX(0); } }
.pf-card {
  flex: 0 0 220px; display: flex; flex-direction: column;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px;
  position: relative; overflow: hidden;
  pointer-events: none;
}
.pf-tag {
  display: inline-block; align-self: flex-start;
  padding: 3px 10px; border-radius: 100px;
  font-size: 10px; font-weight: 600; letter-spacing: 0.3px;
  margin-bottom: 14px;
}
.pf-tag.urgent   { background: #fef2f2; color: #ef4444; }
.pf-tag.featured { background: #eff6ff; color: #2563eb; }
.pf-tag.hot      { background: #fff7ed; color: #ea580c; }
.pf-tag.new      { background: #f0fdf4; color: #16a34a; }
.pf-tag.reward   { background: #faf5ff; color: #9333ea; }
.pf-title {
  font-size: 14px; font-weight: 600; color: var(--text);
  letter-spacing: -0.2px; margin-bottom: 8px; line-height: 1.4;
}
.pf-meta {
  font-size: 12px; color: var(--text-tertiary); font-weight: 300; line-height: 1.6;
}
.pf-meta span { color: var(--text-secondary); font-weight: 500; }
.project-feed-fade {
  position: absolute; top: 0; right: 0; bottom: 0; width: 80px;
  background: linear-gradient(to left, #f5f5f1, transparent);
  pointer-events: none; z-index: 1;
}

/* ===== INFLUENCE FEED — Feature 02 影响力指数浮动卡（双行反向） ===== */
.influence-feed {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--bg-card) 0%, #f5f5f1 100%);
  display: flex; flex-direction: column; gap: 14px;
  padding: 22px 0;
  aspect-ratio: auto;
}
.influence-feed-track {
  display: flex; gap: 16px; padding: 0 28px;
  width: max-content; will-change: transform;
}
/* Animation handled by JS requestAnimationFrame */
.ic-card {
  flex: 0 0 240px; display: flex; flex-direction: column;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 22px 20px 20px;
  position: relative; overflow: hidden;
  pointer-events: none;
}
.ic-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px;
}
.ic-name {
  font-size: 13px; font-weight: 600; color: var(--text);
  letter-spacing: -0.2px;
}
.ic-rank {
  display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border-radius: 6px;
  font-size: 12px; font-weight: 700; font-family: var(--font-en);
}
.ic-rank.s { background: #1a1a1a; color: #fff; }
.ic-rank.a { background: #eff6ff; color: #2563eb; }
.ic-rank.b { background: #f0fdf4; color: #16a34a; }
.ic-rank.c { background: var(--bg-hover); color: var(--text-tertiary); }
.ic-score {
  font-family: var(--font-en); font-size: 36px; font-weight: 800;
  letter-spacing: -1.5px; color: var(--text); line-height: 1;
  margin-bottom: 3px;
}
.ic-score-label {
  font-size: 10px; color: var(--text-tertiary); font-weight: 400;
  letter-spacing: 0.5px; margin-bottom: 18px; text-transform: uppercase;
}
.ic-bars { display: flex; flex-direction: column; gap: 9px; }
.ic-bar { display: flex; align-items: center; gap: 8px; }
.ic-bar-label {
  font-size: 11px; color: var(--text-tertiary); font-weight: 400;
  width: 48px; flex-shrink: 0;
}
.ic-bar-track {
  flex: 1; height: 4px; background: var(--bg-hover); border-radius: 2px;
  overflow: hidden;
}
.ic-bar-fill { height: 100%; border-radius: 2px; background: var(--accent); }
.ic-bar-value {
  font-size: 11px; color: var(--text-secondary); font-weight: 600;
  font-family: var(--font-en); width: 28px; text-align: right; flex-shrink: 0;
}
.influence-feed-fade {
  position: absolute; top: 0; right: 0; bottom: 0; width: 80px;
  background: linear-gradient(to left, #f5f5f1, transparent);
  pointer-events: none; z-index: 1;
}
.project-feed-fade-left {
  position: absolute; top: 0; left: 0; bottom: 0; width: 80px;
  background: linear-gradient(to right, #f5f5f1, transparent);
  pointer-events: none; z-index: 1;
}
.influence-feed-fade-left {
  position: absolute; top: 0; left: 0; bottom: 0; width: 80px;
  background: linear-gradient(to right, #f5f5f1, transparent);
  pointer-events: none; z-index: 1;
}

/* ===== PRODUCT PREVIEW CARDS ===== */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 36px; margin-top: 80px; max-width: 1320px; margin-left: auto; margin-right: auto;
}
.product-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 24px; overflow: hidden; transition: all 0.4s;
}
.product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.product-media {
  aspect-ratio: 16/10; position: relative; cursor: pointer;
  background: var(--bg-hover); overflow: hidden;
}
.product-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.4s; }
.product-media:hover img { transform: scale(1.02); }
.product-info { padding: 32px; }
.product-info h4 { font-size: 22px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 10px; }
.product-info p { font-size: 16px; color: var(--text-secondary); font-weight: 300; line-height: 1.7; }

/* ===== OVERSEAS DISTRIBUTION ===== */
.overseas-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 28px; margin-top: 80px; max-width: 1320px; margin-left: auto; margin-right: auto;
}
.overseas-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 20px; padding: 36px 28px; transition: all 0.4s;
}
.overseas-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.05);
}
.overseas-num {
  display: inline-block; font-family: var(--font-en);
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  color: var(--accent); margin-bottom: 18px;
}
.overseas-card h4 { font-size: 20px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 10px; }
.overseas-card p { font-size: 15px; color: var(--text-secondary); font-weight: 300; line-height: 1.7; }
@media (max-width: 1024px) {
  .overseas-grid { grid-template-columns: repeat(2, 1fr); max-width: 720px; }
}
@media (max-width: 480px) {
  .overseas-grid { grid-template-columns: 1fr; max-width: 420px; gap: 20px; margin-top: 48px; }
  .overseas-card { padding: 28px 22px; }
}

/* ===== TRUSTED BY — 横向滚动品牌栏 ===== */
.trusted-wrap {
  padding: 100px 0; border-top: 1px solid var(--border);
  overflow: hidden; position: relative;
}
.trusted-label {
  text-align: center; font-family: var(--font-en); font-size: 11px;
  font-weight: 600; text-transform: uppercase; letter-spacing: 3px;
  color: var(--text-tertiary); margin-bottom: 48px;
}
.trusted-track {
  display: flex; gap: 60px;
  width: max-content; will-change: transform;
}
.trusted-item {
  flex: 0 0 auto; display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 500; color: var(--text-secondary);
  opacity: 0.5; white-space: nowrap;
}
.trusted-item .dot-icon {
  width: 8px; height: 8px; border-radius: 2px;
  background: var(--accent); opacity: 0.5;
}
@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== CTA ===== */
.cta-section {
  text-align: center; padding: 160px 48px;
  position: relative; overflow: hidden;
  background: var(--bg-card); border-top: 1px solid var(--border);
}
.cta-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(37,99,235,0.03) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(124,58,237,0.02) 0%, transparent 60%);
}
.cta-section h2 {
  font-size: clamp(36px, 6vw, 64px); font-weight: 700;
  letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 16px;
  position: relative; z-index: 1;
}
.cta-section p {
  font-size: 18px; color: var(--text-secondary);
  margin-bottom: 40px; font-weight: 300; position: relative; z-index: 1;
}
.cta-section .btn-primary {
  position: relative; z-index: 1; padding: 16px 44px; font-size: 16px;
  background: #1a1a1a;
  color: #fff;
  border: none;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.cta-section .btn-primary:hover {
  background: #000;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

/* ===== SERVICES (OPC 入驻服务) ===== */
.service-section {
  padding: 140px 48px 100px;
  max-width: 1280px; margin: 0 auto;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 28px 32px;
  display: flex; flex-direction: column;
  transition: all 0.35s ease;
}
.service-card:hover {
  border-color: var(--border-hover, #d0d0c8);
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.06);
}
.service-icon {
  font-size: 36px; line-height: 1;
  margin-bottom: 20px;
}
.service-title {
  font-size: 17px; font-weight: 600;
  letter-spacing: -0.3px; color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}
.service-list { list-style: none; padding: 0; margin: 0; flex: 1; }
.service-item {
  font-size: 14px; font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.7;
  padding: 5px 0;
  position: relative;
  padding-left: 16px;
}
.service-item::before {
  content: '';
  position: absolute; left: 0; top: 14px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); opacity: 0.45;
}
.service-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 20px;
  font-size: 14px; font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  transition: all 0.25s;
  letter-spacing: -0.2px;
}
.service-link:hover {
  color: var(--accent-hover, #1d4ed8);
  gap: 7px;
}

/* ===== FOOTER ===== */
.footer {
  padding: 48px; border-top: 1px solid var(--border);
  max-width: 1280px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-left { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-tertiary); }
.footer-right { display: flex; gap: 32px; }
.footer-right a { font-size: 13px; color: var(--text-tertiary); text-decoration: none; transition: color 0.3s; }
.footer-right a:hover { color: var(--text-secondary); }

.footer-cols { display: flex; justify-content: space-between; align-items: center; width: 100%; flex-wrap: wrap; gap: 24px; }
.footer-opc { display: flex; flex-direction: column; gap: 8px; }
.footer-opc-label { font-size: 12px; color: var(--text-tertiary); letter-spacing: .5px; }
.footer-opc a { font-size: 13px; color: var(--text-secondary); text-decoration: none; transition: color .3s; }
.footer-opc a:hover { color: var(--accent); }

/* ===== ANIMATIONS ===== */
.reveal {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Hero 内容立即显示，不等待 JS */
.hero .reveal { opacity: 1 !important; transform: none !important; }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }

/* ===== RESPONSIVE ===== */

/* ---- 平板 (768px - 1024px) ---- */
@media (max-width: 1024px) {
  .nav { padding: 0 32px; }
  .nav-links { gap: 24px; }
  .hero { padding: 120px 32px 80px; }
  .hero-title { font-size: clamp(40px, 7vw, 64px); letter-spacing: -2px; color: #ffffff; }
  .hero-subtitle { font-size: 17px; max-width: 420px; color: rgba(255,255,255,0.55); }
  .hero-actions { margin-bottom: 60px; }
  .hero-features { gap: 10px; margin-bottom: 32px; }
  .section-wrap { padding: 100px 32px; }
  .section-title { font-size: clamp(32px, 5vw, 44px); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { padding: 40px 24px; }
  .pain-grid { grid-template-columns: 1fr; }
  .pain-card { padding: 28px 24px; }
  .feature-row { grid-template-columns: 1fr; min-height: auto; }
  .feature-row.reverse .feature-text-side { order: 1; }
  .feature-row.reverse .feature-media-side { order: 2; }
  .feature-text-side { padding: 56px 32px; max-width: 100%; }
  .feature-media-side { aspect-ratio: 16/9; border-left: none !important; border-right: none !important; border-top: 1px solid var(--border); }
  .feature-media-side.project-feed, .feature-media-side.influence-feed { aspect-ratio: auto; }
  .feature-media-side.video-display { min-height: 280px; }
  .feature-row.reverse .feature-media-side { border-top: 1px solid var(--border); }
  .product-grid { grid-template-columns: 1fr; max-width: 720px; margin: 48px auto 0; }
  .pf-card { flex: 0 0 200px; padding: 16px; }
  .ic-card { flex: 0 0 210px; padding: 18px 16px; }
  .trusted-wrap { padding: 70px 0; }

  /* Services: tablet 2-col */
  .service-section { padding: 100px 32px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 48px; }
}

/* ---- 手机 (≤ 768px) ---- */
@media (max-width: 768px) {
  /* 导航栏 */
  .nav { padding: 0 20px; }
  .nav-links { display: none; }
  .opc-link { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-logo { font-size: 15px; }
  .nav-logo-img { width: 28px; height: 28px; font-size: 13px; }

  /* Hero — 手机端：视频与文字拆成两个独立板块（视频按原比例完整显示，零黑边零裁切） */
  .hero {
    display: block;
    min-height: auto;
    height: auto;
    padding: 0;
    background: #0a0a0a;
    position: relative;
    overflow: hidden;
  }
  .hero-video-bg {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    aspect-ratio: 960 / 412;
    object-fit: cover;
    object-position: center center;
    transform: scale(1.03);
    transition: transform 1.4s ease;
    will-change: transform; /* GPU composite layer (no repaint) — keeps hero smooth on mobile */
    backface-visibility: hidden;
    display: block;
    z-index: 0;
  }
  .hero-bg-overlay { display: none; }
  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-top: 0;
    padding: 32px 20px 24px;
  }
  .hero-badge { font-size: 11px; margin-bottom: 10px; padding: 4px 12px; }
  .hero-title { font-size: clamp(26px, 7vw, 38px); letter-spacing: -0.8px; line-height: 1.2; margin-bottom: 10px; color: #ffffff; }
  .hero-subtitle { font-size: 13px; color: rgba(255,255,255,0.55); margin-bottom: 20px; line-height: 1.5; max-width: 100%; }
  .hero-actions {
    flex-direction: row !important;
    justify-content: center;
    gap: 12px;
    margin-top: 0;
    max-width: 340px;
    width: 100%;
  }
  .btn-primary, .btn-outline {
    flex: 1;
    padding: 11px 18px;
    font-size: 13px;
    text-align: center;
    border-radius: 100px;
  }
  .hero-showcase { border-radius: 12px; max-width: 100%; }
  .hero-img { aspect-ratio: 16/10; }

  /* Stats */
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat-cell { padding: 28px 16px; border-right: 1px solid var(--border); }
  .stat-cell:nth-child(2) { border-right: none; }
  .stat-cell:nth-child(3) { border-top: 1px solid var(--border); }
  .stat-cell:nth-child(4) { border-top: 1px solid var(--border); }
  .stat-num { font-size: clamp(32px, 8vw, 44px); }
  .stat-desc { font-size: 12px; }

  /* Section */
  .section-wrap { padding: 60px 20px; }
  .section-label { font-size: 10px; letter-spacing: 2.5px; margin-bottom: 12px; }
  .section-title { font-size: clamp(28px, 7vw, 36px); letter-spacing: -1px; margin-bottom: 16px; }
  .section-desc { font-size: 15px; max-width: 100%; }

  /* 痛点 */
  .pain-grid { gap: 16px; margin-top: 40px; }
  .pain-card { padding: 24px 20px; border-radius: 18px; }
  .pain-badge { font-size: 10px; margin-bottom: 20px; }
  .pain-card h3 { font-size: 22px; letter-spacing: -0.5px; }

  /* 方案滚动 */
  .solution-scroll { margin-top: 40px; }
  .solution-card { flex: 0 0 260px; padding: 32px 24px; }
  .solution-card .step-icon { width: 40px; height: 40px; font-size: 16px; margin-bottom: 20px; }
  .solution-card h4 { font-size: 16px; }
  .solution-card p { font-size: 13px; }

  /* Trusted by */
  .trusted-wrap { padding: 56px 0; }
  .trusted-label { font-size: 10px; margin-bottom: 32px; letter-spacing: 2px; }
  .trusted-track { gap: 36px; animation-duration: 22s; }
  .trusted-item { font-size: 16px; gap: 8px; }
  .trusted-item .dot-icon { width: 6px; height: 6px; }

  /* Features */
  .feature-text-side { padding: 40px 20px; }
  .feature-text-side h2 { font-size: clamp(24px, 6vw, 32px); letter-spacing: -0.8px; margin-bottom: 12px; }
  .feature-text-side p { font-size: 15px; line-height: 1.7; }
  .feature-label { font-size: 10px; letter-spacing: 2.5px; }
  .feature-media-side { aspect-ratio: 4/3; }
  .feature-media-side.project-feed, .feature-media-side.influence-feed { aspect-ratio: auto; }
  .feature-media-side.video-display { min-height: 240px; }

  /* 浮动卡片缩小 */
  .pf-card { flex: 0 0 170px; padding: 14px; border-radius: 12px; }
  .pf-tag { font-size: 9px; padding: 2px 8px; margin-bottom: 10px; }
  .pf-title { font-size: 13px; margin-bottom: 6px; line-height: 1.3; }
  .pf-meta { font-size: 11px; }
  .project-feed-track, .influence-feed-track { gap: 12px; padding: 0 20px; }

  .ic-card { flex: 0 0 190px; padding: 16px 14px; border-radius: 12px; }
  .ic-name { font-size: 12px; }
  .ic-rank { width: 22px; height: 22px; font-size: 11px; }
  .ic-score { font-size: 30px; }
  .ic-score-label { font-size: 9px; margin-bottom: 14px; }
  .ic-bar-label { font-size: 10px; width: 40px; }
  .ic-bar-value { font-size: 10px; }

  /* 视频标签 */
  .feature-media-side .video-tag { font-size: 9px; padding: 3px 8px; }

  /* Product */
  .product-grid { gap: 24px; margin: 48px auto 0; max-width: 720px; }
  .product-card { border-radius: 16px; }
  .product-media { aspect-ratio: 16/10; }
  .product-info { padding: 26px; }
  .product-info h4 { font-size: 18px; }
  .product-info p { font-size: 14px; }

  /* Services (OPC 入驻服务) */
  .service-section { padding: 80px 20px; }
  .service-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 40px; }
  .service-card { padding: 28px 22px 24px; border-radius: 16px; }
  .service-icon { font-size: 30px; margin-bottom: 14px; }
  .service-title { font-size: 15px; margin-bottom: 12px; }
  .service-item { font-size: 13px; padding: 3px 0 3px 14px; }
  .service-item::before { top: 11px; width: 4px; height: 4px; }
  .service-link { font-size: 13px; margin-top: 14px; }

  /* CTA */
  .cta-section { padding: 80px 20px; }
  .cta-section h2 { font-size: clamp(30px, 8vw, 44px); letter-spacing: -1px; }
  .cta-section p { font-size: 16px; }
  .cta-section .btn-primary { padding: 14px 36px; font-size: 15px; }

  /* Footer */
  .footer { flex-direction: column; gap: 20px; text-align: center; padding: 32px 20px; }
  .footer-right { gap: 20px; flex-wrap: wrap; justify-content: center; }
  .footer-right a { font-size: 12px; }
  .footer-left { font-size: 12px; flex-direction: column; gap: 6px; }
  .footer-cols { flex-direction: column; gap: 20px; text-align: center; }
  .footer-opc { align-items: center; gap: 6px; }
  .footer-opc-label { width: 100%; text-align: center; }
}

/* ---- 小屏手机 (≤ 480px) ---- */
@media (max-width: 480px) {
  .hero { min-height: auto; padding: 0; }
  .hero-content { padding: 24px 18px 20px; }
  .hero-title { font-size: clamp(22px, 6.5vw, 32px); letter-spacing: -0.6px; line-height: 1.2; color: #ffffff; margin-bottom: 8px; }
  .hero-subtitle { font-size: 12px; color: rgba(255,255,255,0.5); line-height: 1.4; margin-bottom: 16px; max-width: 100%; }
  .hero-actions {
    flex-direction: row !important;
    justify-content: center;
    gap: 10px;
    margin-top: 0;
    max-width: 300px;
    width: 100%;
  }
  .btn-primary, .btn-outline {
    padding: 10px 14px;
    font-size: 12px;
  }
  .btn-primary, .btn-outline {
    flex: 1;
    padding: 12px 14px;
    font-size: 13px;
    text-align: center;
    border-radius: 100px;
  }

  /* Stats: keep 2x2 on mobile for compact look */
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat-cell { padding: 24px 14px; border-right: 1px solid var(--border) !important; }
  .stat-cell:nth-child(2) { border-right: none !important; }
  .stat-cell:nth-child(n+3) { border-top: 1px solid var(--border); }
  .stat-num { font-size: clamp(28px, 7vw, 36px); }

  .section-wrap { padding: 48px 16px; }
  .section-title { font-size: 26px; }

  .pain-card { padding: 20px 16px; border-radius: 16px; }
  .pain-card h3 { font-size: 20px; }
  .pain-card p { font-size: 12px; }

  .feature-text-side { padding: 36px 16px; }
  .feature-text-side h2 { font-size: 22px; }
  .feature-text-side p { font-size: 14px; }
  .feature-media-side.video-display { min-height: 200px; }

  .pf-card { flex: 0 0 155px; padding: 12px; }
  .pf-title { font-size: 12px; }
  .pf-meta { font-size: 10px; }

  .ic-card { flex: 0 0 170px; padding: 14px 12px; }
  .ic-score { font-size: 26px; }

  .cta-section { padding: 64px 16px; }
  .cta-section h2 { font-size: 28px; }
  .cta-section .btn-primary { padding: 13px 32px; }

  /* Services */
  .service-section { padding: 56px 16px; }
  .service-grid { grid-template-columns: 1fr; gap: 14px; margin-top: 32px; }
  .service-card { padding: 24px 18px 20px; border-radius: 14px; }
  .service-icon { font-size: 28px; margin-bottom: 12px; }
  .service-title { font-size: 15px; }
  .service-item { font-size: 13px; }

  .trusted-item { font-size: 14px; gap: 6px; }
  .trusted-item .dot-icon { width: 5px; height: 5px; }
}

/* ---- 横屏手机 ---- */
@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
  .hero { min-height: 100vh; padding: 80px 24px 40px; }
  .hero-badge { margin-bottom: 20px; }
  .hero-title { font-size: 36px; margin-bottom: 12px; color: #ffffff; }
  .hero-subtitle { margin-bottom: 24px; }
  .hero-actions { margin-bottom: 32px; }
}

/* ---- 安全区域适配 (iPhone 刘海/底部) ---- */
@supports (padding: env(safe-area-inset-top)) {
  .nav { padding-top: env(safe-area-inset-top); height: calc(56px + env(safe-area-inset-top)); }
  .nav-drawer { top: calc(56px + env(safe-area-inset-top)); }
  .footer { padding-bottom: calc(32px + env(safe-area-inset-bottom)); }
  .hero { padding-top: calc(80px + env(safe-area-inset-top)); }
}

/* ---- 触摸优化 ---- */
@media (hover: none) and (pointer: coarse) {
  .pain-card:hover, .product-card:hover, .solution-card:hover {
    transform: none; box-shadow: none;
  }
  .btn-primary:hover, .btn-outline:hover, .nav-cta:hover {
    transform: none;
  }
}

/* ---- 大屏优化 (> 1440px) ---- */
@media (min-width: 1440px) {
  .hero-title { font-size: 96px; color: #ffffff; }
  .section-wrap { max-width: 1320px; }
  .hero-showcase { max-width: 1200px; }
}

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

/* Scrollbar */
/* ===== OPC NAV LINKS ===== */
.opc-link {
  text-decoration: none !important; color: rgba(255,255,255,0.5) !important;
  font-size: 13px; font-weight: 400; letter-spacing: -0.2px;
  transition: color 0.3s; padding: 6px 10px; border-radius: 6px;
}
.opc-link:hover, .opc-link:visited, .opc-link:active { color: #ffffff !important; background: rgba(255,255,255,0.08); text-decoration: none !important; }
.opc-current {
  color: var(--accent) !important;
  background: var(--accent-light) !important;
  cursor: default;
  font-weight: 600 !important;
  font-size: 14px !important;
  transform: scale(1.08);
  box-shadow: 0 2px 12px rgba(37,99,235,0.15);
}

.drawer-opc-link {
  display: block; padding: 12px 24px;
  text-decoration: none; color: rgba(0,0,0,0.6);
  font-size: 15px; font-weight: 400; border-radius: 8px;
  transition: all 0.2s; margin-top: 4px;
}
.drawer-opc-link:hover { color: var(--accent); background: var(--accent-light); }
.drawer-opc-link.opc-current {
  color: var(--accent) !important;
  background: var(--accent-light) !important;
  font-weight: 600 !important;
  font-size: 16px !important;
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(37,99,235,0.12);
}

@media (max-width: 768px) {
  .compute-section { padding: 0 24px 80px; }
  .compute-card { flex-direction: column; padding: 32px 24px; gap: 28px; text-align: center; }
  .compute-card-right { width: 100%; }
  .compute-features { align-items: center; }
  .compute-price { font-size: 44px; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d4d4cc; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #b0b0a8; }