/* ==========================================================================
   广州四必得科技官网 - 科技感视觉样式 v2
   Deep Space × Neon Cyan × Data Grid × Motion FX
   ========================================================================== */

/* ---------- CSS 变量与基础 ---------- */
:root {
  --bg-deep: #05070f;
  --bg-dark: #0a0e1c;
  --bg-card: rgba(15, 22, 44, 0.72);
  --bg-card-solid: #0d1326;
  --line: rgba(80, 200, 255, 0.14);
  --line-strong: rgba(80, 200, 255, 0.32);
  --cyan: #22d3ee;
  --indigo: #6366f1;
  --purple: #8b5cf6;
  --text-main: #e8f1ff;
  --text-sub: #9fb0cf;
  --text-dim: #64748b;
  --grad: linear-gradient(120deg, #22d3ee 0%, #4f7cf7 55%, #8b5cf6 100%);
  --grad-text: linear-gradient(110deg, #7ee7ff, #6d8dff 55%, #b18cff);
  --font-sans: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --font-num: "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 60% 45% at 50% -8%, rgba(99, 102, 241, 0.16), transparent 70%),
    radial-gradient(ellipse 45% 35% at 88% 30%, rgba(34, 211, 238, 0.07), transparent 70%),
    var(--bg-deep);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(122, 200, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 200, 255, 0.04) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to bottom, transparent, black 8%, black 92%, transparent);
}

::selection { background: rgba(34, 211, 238, 0.28); color: #fff; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(var(--maxw), 92%);
  margin: 0 auto;
}

.section { position: relative; padding: 110px 0; }

.mt8 { margin-top: 8px; }
.center-note { text-align: center; color: var(--text-sub); font-size: 14px; margin-top: 18px; letter-spacing: 1px; }

/* ---------- 通用标题 ---------- */
.section-head { text-align: center; margin-bottom: 62px; }

.section-tag {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 5px;
  color: #22d3ee;
  border: 1px solid rgba(34, 211, 238, 0.5);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(139, 92, 246, 0.1));
  padding: 7px 20px;
  border-radius: 4px;
  margin-bottom: 22px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.2), inset 0 0 12px rgba(34, 211, 238, 0.08);
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
}
.section-tag::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 40%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,0.22), transparent);
  animation: tagShine 3.2s ease-in-out infinite;
}
@keyframes tagShine { 0% { left: -50%; } 60%, 100% { left: 110%; } }

.section-title {
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 900;
  letter-spacing: 6px;
  background: linear-gradient(135deg, #38e8ff 0%, #5b9eff 45%, #a78bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
  position: relative;
  display: block;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  z-index: 2;
}
.section-title::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  color: transparent;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 22px rgba(91, 158, 255, 0.4), 0 0 6px rgba(56, 232, 255, 0.3);
  z-index: 1;
  pointer-events: none;
}

.section-desc {
  color: #8aa0c0;
  font-size: 15px;
  letter-spacing: 2px;
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  padding: 0 32px;
}
.section-desc::before, .section-desc::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 18px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
.section-desc::before { left: 0; }
.section-desc::after { right: 0; }

.block-title {
  font-size: 24px;
  font-weight: 700;
  margin: 72px 0 30px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.block-title::before {
  content: "";
  width: 6px;
  height: 26px;
  background: var(--grad);
  border-radius: 3px;
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
}

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  z-index: 2000;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.7);
  transition: width 0.12s linear;
}

/* ---------- 加载动画 ---------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
}
#preloader.hidden { opacity: 0; visibility: hidden; }

.loader-core { position: relative; width: 140px; height: 140px; display: flex; align-items: center; justify-content: center; }
.loader-ring {
  position: absolute; inset: 0;
  border: 2px solid transparent;
  border-top-color: var(--cyan);
  border-right-color: var(--indigo);
  border-radius: 50%;
  animation: spin 1.1s linear infinite;
}
.loader-ring2 {
  inset: 14px;
  border-top-color: transparent;
  border-bottom-color: var(--purple);
  border-left-color: var(--cyan);
  animation-direction: reverse;
  animation-duration: 1.7s;
}
.loader-dot {
  width: 10px; height: 10px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 18px 4px rgba(34, 211, 238, 0.6);
  animation: pulse 1.2s ease-in-out infinite;
}
.loader-text {
  position: absolute; bottom: -34px;
  font-family: var(--font-num);
  font-size: 11px; letter-spacing: 4px;
  color: var(--text-sub);
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.5); opacity: 0.55; } }

/* ---------- 导航 ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: padding 0.35s var(--ease), background 0.35s, border-color 0.35s, backdrop-filter 0.35s;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  padding: 10px 0;
  background: rgba(5, 8, 18, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 94%; max-width: 1340px; margin: 0 auto; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { display: flex; filter: drop-shadow(0 0 10px rgba(34, 211, 238, 0.5)); }
.brand-mark img { transition: transform 0.6s var(--ease); height: 32px; width: auto; border-radius: 4px; object-fit: contain; }
.brand:hover .brand-mark img { transform: rotate(-5deg) scale(1.08); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 19px; font-weight: 900; letter-spacing: 1px; }
.brand-text em { font-style: normal; font-family: var(--font-num); font-size: 9px; letter-spacing: 3px; color: var(--text-dim); }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link {
  font-size: 15px;
  color: var(--text-sub);
  position: relative;
  padding: 6px 2px;
  transition: color 0.25s;
}
.nav-link::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--grad);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: 0.3s var(--ease); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s;
  letter-spacing: 0.5px;
}
.btn-primary {
  background: linear-gradient(120deg, #1fb6d8, #4f7cf7 60%, #7a5cf0);
  background-size: 160% 160%;
  color: #fff;
  box-shadow: 0 8px 26px rgba(79, 124, 247, 0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(34, 211, 238, 0.4); background-position: 100% 50%; }
.btn-primary::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,0.25) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease);
}
.btn-primary:hover::before { transform: translateX(100%); }

.btn-glow { animation: btnGlow 2.6s ease-in-out infinite; }
@keyframes btnGlow {
  0%, 100% { box-shadow: 0 8px 26px rgba(79, 124, 247, 0.35); }
  50% { box-shadow: 0 8px 40px rgba(34, 211, 238, 0.65); }
}

.btn-ghost {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 22px rgba(34, 211, 238, 0.18); transform: translateY(-3px); }
.btn-arrow { transition: transform 0.25s var(--ease); }
.btn-ghost:hover .btn-arrow { transform: translateX(5px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 120px;
  overflow: hidden;
}
#heroCanvas {
  position: absolute; inset: 0;
  z-index: 0;
  opacity: 0.9;
  width: 100%;
  height: 100%;
}
.hero-grid-overlay {
  position: absolute; inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 55% 42% at 50% 42%, rgba(34, 211, 238, 0.10), transparent 70%),
    radial-gradient(ellipse 40% 30% at 22% 78%, rgba(139, 92, 246, 0.08), transparent 70%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  z-index: 0;
  pointer-events: none;
  animation: glowFloat 8s ease-in-out infinite;
}
.glow-a {
  width: 480px; height: 480px;
  left: -140px; top: 12%;
  background: rgba(34, 211, 238, 0.13);
}
.glow-b {
  width: 420px; height: 420px;
  right: -120px; bottom: 8%;
  background: rgba(139, 92, 246, 0.13);
  animation-delay: -4s;
}
@keyframes glowFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.15); }
}

.hero-content { position: relative; z-index: 2; max-width: 920px; }

.hero-eyebrow {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--cyan);
  margin-bottom: 26px;
  text-shadow: 0 0 20px rgba(34, 211, 238, 0.5);
  animation: blinkFade 3s ease-in-out infinite;
}
@keyframes blinkFade { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }

.hero-title {
  font-size: clamp(38px, 6.4vw, 72px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: 1px;
  margin-bottom: 28px;
}
.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 46px rgba(109, 141, 255, 0.35);
}
.type-line { display: inline-block; }
.type-cursor {
  display: inline-block;
  color: var(--cyan);
  font-weight: 300;
  animation: cursorBlink 0.8s step-end infinite;
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.9);
}
@keyframes cursorBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-sub {
  font-size: 17px;
  color: var(--text-sub);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.9;
  letter-spacing: 1px;
}
.hero-sub-line {
  display: block;
  margin-bottom: 10px;
}
.hero-sub-line2 {
  display: block;
  margin-bottom: 8px;
}
.hero-sub-highlight {
  color: var(--cyan);
  font-weight: 700;
  padding: 3px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.08);
  margin-left: 8px;
  white-space: nowrap;
  display: inline-block;
}
.hero-actions { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }

.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 78px;
  padding: 30px 34px;
  background: rgba(10, 15, 32, 0.55);
  border: 1px solid var(--line);
  border-radius: 18px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  max-width: 920px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  animation: statFloat 5s ease-in-out infinite;
}
@keyframes statFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.stat-card { min-width: 150px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.stat-value { display: flex; align-items: center; justify-content: center; }
.stat-kw {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
  filter: drop-shadow(0 0 14px rgba(109, 141, 255, 0.35));
}
.stat-label { font-size: 13px; color: var(--text-dim); letter-spacing: 1px; }
.stat-divider { width: 1px; height: 44px; background: var(--line); }

.hero-scroll {
  position: absolute;
  bottom: 34px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
  font-family: var(--font-num);
  font-size: 10px;
  letter-spacing: 3px;
  transition: color 0.3s;
}
.hero-scroll:hover { color: var(--cyan); }
.mouse {
  width: 24px; height: 40px;
  border: 2px solid var(--line-strong);
  border-radius: 14px;
  display: flex; justify-content: center;
  padding-top: 7px;
}
.wheel {
  width: 3px; height: 8px;
  background: var(--cyan);
  border-radius: 2px;
  animation: wheel 1.6s ease-in-out infinite;
}
@keyframes wheel { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { transform: translateY(0); opacity: 0; } }

/* ---------- 关于我们 ---------- */
.about { background: linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.6), transparent); }

/* 关于我们 - 融入式背景 */
.about-wrap {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  padding: 60px 50px;
  min-height: 420px;
  display: flex;
  align-items: center;
}
.about-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  filter: brightness(0.7) contrast(1.3) saturate(1.3) hue-rotate(-10deg);
  -webkit-mask: linear-gradient(90deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.15) 100%);
  mask: linear-gradient(90deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.15) 100%);
  animation: aboutBgPan 18s ease-in-out infinite;
  z-index: 0;
}
@keyframes aboutBgPan {
  0%, 100% { transform: scale(1.05) translateX(0); }
  50% { transform: scale(1.12) translateX(-2%); }
}
.about-bg-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 90% at 30% 50%, rgba(34, 211, 238, 0.1), transparent 65%),
              radial-gradient(ellipse 50% 60% at 80% 40%, rgba(99, 102, 241, 0.08), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.about-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(10, 14, 28, 0.4) 0%, rgba(10, 14, 28, 0.7) 100%);
  z-index: 0;
  pointer-events: none;
}

.about-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  width: 100%;
}

/* 关于我们 - 文字区 */
.about-intro h3 { font-size: 28px; font-weight: 800; line-height: 1.5; margin-bottom: 20px; }
.about-intro p { color: var(--text-sub); font-size: 15.5px; margin-bottom: 22px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.about-tags span {
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-sub);
  transition: all 0.25s;
}
.about-tags span:hover { color: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 14px rgba(34, 211, 238, 0.2); transform: translateY(-2px); }

/* 关于我们 - 卡片区 */
.about-cards { display: grid; gap: 16px; }
.about-card {
  background: rgba(10, 14, 28, 0.65);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ---------- 3D 倾斜卡片 ---------- */
.tilt-card { transform-style: preserve-3d; will-change: transform; }
.tilt-card .card-3d-icon, .tilt-card h4, .tilt-card p, .tilt-card .source-icon, .tilt-card .tech-icon { transform: translateZ(24px); }

.card-3d {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  backdrop-filter: blur(8px);
}
.card-3d::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.35s;
}
.card-3d::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(34, 211, 238, 0.06), transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.8s var(--ease);
}
.card-3d:hover { transform: translateY(-8px) scale(1.02) rotateX(2deg); border-color: var(--line-strong); box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 30px rgba(34,211,238,0.18); }
.card-3d:hover::before { opacity: 1; }
.card-3d:hover::after { transform: translateX(100%); }
.card-3d-icon { font-size: 22px; color: var(--cyan); margin-bottom: 10px; filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.6)); }
.card-3d h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card-3d p { color: var(--text-sub); font-size: 14px; }

/* ---------- 数据能力树 ---------- */
/* ---------- 数据能力管线 ---------- */
.cap-pipeline {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  margin-bottom: 20px;
  padding: 36px 20px;
  border-radius: var(--radius);
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(34, 211, 238, 0.06), transparent);
}

/* 阶段容器 */
.pipe-stage {
  flex: 1;
  max-width: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  z-index: 2;
}

/* 发光核心节点 */
.pipe-hub {
  position: relative;
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(13,20,40,0.95), rgba(13,20,40,0.7));
  border: 1px solid var(--line-strong);
  transition: box-shadow 0.4s, transform 0.4s var(--ease);
}
.pipe-hub:hover {
  box-shadow: 0 0 50px rgba(34,211,238,0.3);
  transform: translateY(-4px) rotateX(3deg) scale(1.03);
}
.pipe-hub-glow {
  border-color: rgba(34,211,238,0.45);
  box-shadow: 0 0 40px rgba(34,211,238,0.15), inset 0 0 30px rgba(34,211,238,0.04);
}

/* 同心扩散环 */
.hub-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(34,211,238,0.3);
  animation: hubRingExpand 3s ease-out infinite;
}
.hub-ring-2 {
  animation-delay: 1.5s;
}
@keyframes hubRingExpand {
  0% { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(1.35); opacity: 0; }
}

/* 核心内容 */
.hub-core {
  position: relative;
  z-index: 2;
  text-align: center;
}
.hub-icon {
  font-size: 28px;
  color: var(--cyan);
  filter: drop-shadow(0 0 10px rgba(34,211,238,0.6));
  display: block;
  margin-bottom: 4px;
}
.hub-core strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 2px;
}
.hub-core small {
  font-size: 11.5px;
  color: var(--text-sub);
  line-height: 1.4;
}

/* 数据芯片 */
.pipe-chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  max-width: 200px;
}
.pipe-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--text-sub);
  background: rgba(13,20,40,0.85);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}
.pipe-chip i {
  color: var(--cyan);
  font-style: normal;
  font-size: 11px;
}
.pipe-chip:hover {
  border-color: rgba(34,211,238,0.4);
  color: var(--text-main);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(34,211,238,0.12);
}

/* 粒子流动连线 */
.pipe-flow {
  flex-shrink: 0;
  width: 60px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pipe-flow svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ---------- 数据源卡片 ---------- */
.source-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.source-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s;
}
.source-card::after {
  content: "";
  position: absolute;
  right: -40px; top: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.12), transparent 70%);
  transition: transform 0.4s var(--ease);
}
.source-card:hover { transform: translateY(-10px) scale(1.02) rotateX(3deg); border-color: var(--line-strong); box-shadow: 0 22px 55px rgba(0,0,0,0.45), 0 0 24px rgba(34, 211, 238, 0.18); }
.source-card:hover::after { transform: scale(1.5); }
.source-card::before {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.source-card:hover::before { transform: scaleX(1); }
.source-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  background: linear-gradient(135deg, rgba(34,211,238,0.1), rgba(99,102,241,0.08));
  border: 1px solid rgba(34,211,238,0.2);
  margin-bottom: 14px;
  filter: drop-shadow(0 0 10px rgba(34,211,238,0.3));
  transition: all 0.35s;
}
.source-icon svg { width: 26px; height: 26px; }
.source-card:hover .source-icon {
  box-shadow: 0 0 24px rgba(34,211,238,0.35);
  border-color: rgba(34,211,238,0.5);
  transform: translateY(-2px);
}
.source-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.source-card > p { color: var(--text-dim); font-size: 13px; margin-bottom: 14px; }
.source-card ul { display: flex; flex-direction: column; gap: 7px; }
.source-card li {
  font-size: 13.5px;
  color: var(--text-sub);
  padding-left: 16px;
  position: relative;
}
.source-card li::before {
  content: "▸";
  position: absolute; left: 0;
  color: var(--cyan);
  font-size: 12px;
}

/* ---------- 运营商数据能力 ---------- */
.dpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.dpi-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: all 0.3s var(--ease);
}
.dpi-item:hover { border-color: var(--cyan); transform: translateY(-6px) rotateX(3deg) scale(1.02); box-shadow: 0 14px 36px rgba(0,0,0,0.4), 0 0 28px rgba(34, 211, 238, 0.2); }
.dpi-icon {
  font-size: 20px;
  color: var(--cyan);
  flex-shrink: 0;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid var(--line);
}
.dpi-item b { display: block; font-size: 15.5px; margin-bottom: 4px; }
.dpi-item small { color: var(--text-sub); font-size: 12.5px; line-height: 1.7; display: block; }

.dpi-examples {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.dpi-example {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.06);
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  padding: 8px 14px;
  letter-spacing: 0.5px;
  animation: exampleFloat 4s ease-in-out infinite;
}
.dpi-example:nth-child(2) { animation-delay: -1s; }
.dpi-example:nth-child(3) { animation-delay: -2s; }
.dpi-example:nth-child(4) { animation-delay: -3s; }
@keyframes exampleFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

/* ---------- 对比表 ---------- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: rgba(10, 15, 30, 0.6); }
.data-table { width: 100%; border-collapse: collapse; min-width: 780px; }
.data-table th, .data-table td { padding: 15px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th { background: rgba(34, 211, 238, 0.07); color: var(--cyan); font-weight: 700; font-size: 14.5px; letter-spacing: 1px; }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.25s; }
.data-table tbody tr:hover { background: rgba(34, 211, 238, 0.04); }
.data-table td b { color: #fff; font-weight: 600; }
.data-table td small { color: var(--text-dim); font-size: 12px; }
.data-table .highlight-col { background: rgba(34, 211, 238, 0.06); }
.data-table thead .highlight-col { background: rgba(34, 211, 238, 0.14); }

/* ---------- 应用场景 ---------- */
.scenario { 
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.55), transparent); 
}

/* 场景区背景图 */
.scenario-bg-img {
  position: absolute;
  top: 10%; right: -5%;
  width: 50%; height: 60%;
  z-index: 0;
  pointer-events: none;
}
.scenario-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  opacity: 0.15;
  filter: hue-rotate(10deg) brightness(0.7);
}
.scenario-bg-overlay {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(270deg, transparent, rgba(5, 7, 15, 0.6));
}

/* 全链路流程节点指示器 */
.scenario-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 50px;
  flex-wrap: wrap;
}
.sc-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 28px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  cursor: pointer;
  transition: all 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}
.sc-node::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transition: transform 0.4s var(--ease);
}
.sc-node:hover { transform: translateY(-6px) rotateX(3deg) scale(1.03); border-color: var(--line-strong); box-shadow: 0 14px 36px rgba(34, 211, 238, 0.18); }
.sc-node.active {
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.15), inset 0 0 20px rgba(34, 211, 238, 0.04);
}
.sc-node.active::before { transform: scaleX(1); }
.sc-num {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 1px;
}
.sc-node b {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}
.sc-node.active b { color: #fff; }
.sc-link {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--indigo));
  opacity: 0.3;
  position: relative;
}
.sc-link::after {
  content: "";
  position: absolute;
  right: -1px; top: 50%;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-left: 6px solid var(--indigo);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
}
.sc-node.active + .sc-link { opacity: 0.6; }

.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 44px;
}
.tab-btn {
  padding: 11px 24px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-sub);
  font-size: 14.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  font-family: inherit;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}
.tab-btn:hover { color: var(--cyan); border-color: var(--cyan); transform: translateY(-2px); }
.tab-btn.active {
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.18), rgba(99, 102, 241, 0.18));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.2), inset 0 0 0 1px rgba(34, 211, 238, 0.4);
}

.tab-panel { display: none; animation: fadeUp 0.5s var(--ease); }
.tab-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }

.panel-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 28px;
  transition: transform 0.3s var(--ease), border-color 0.3s;
  backdrop-filter: blur(6px);
}
.panel-card:hover { transform: translateY(-6px) rotateX(2deg) scale(1.01); border-color: var(--line-strong); }
.panel-card.wide { grid-column: 1 / -1; }
.panel-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.panel-num {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 2px 8px;
  background: rgba(34, 211, 238, 0.08);
}
.panel-card p { color: var(--text-sub); font-size: 14px; margin-bottom: 12px; }
.panel-card ul { display: flex; flex-direction: column; gap: 8px; }
.panel-card li { font-size: 13.5px; color: var(--text-main); padding-left: 18px; position: relative; }
.panel-card li::before { content: "▸"; position: absolute; left: 0; color: var(--cyan); }

/* 6W 模型 */
.six-w {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.sw-item {
  text-align: center;
  padding: 22px 14px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease);
}
.sw-item::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transition: transform 0.4s var(--ease);
}
.sw-item:hover { transform: translateY(-8px) rotateX(4deg) scale(1.04); border-color: var(--cyan); box-shadow: 0 18px 44px rgba(0,0,0,0.45), 0 0 28px rgba(34, 211, 238, 0.2); }
.sw-item:hover::before { transform: scaleX(1); }
.sw-item b {
  display: block;
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--cyan);
  margin-bottom: 6px;
  letter-spacing: 1px;
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}
.sw-item span { display: block; font-size: 13.5px; font-weight: 600; color: #fff; margin-bottom: 4px; }
.sw-item small { color: var(--text-dim); font-size: 11.5px; }
.six-w-note { text-align: center; color: var(--text-dim); font-size: 13px; letter-spacing: 2px; margin: 0 0 26px; }

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.tag-cloud span {
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-sub);
  transition: all 0.25s;
  cursor: default;
}
.tag-cloud span:hover { color: var(--cyan); border-color: var(--cyan); background: rgba(34, 211, 238, 0.14); transform: translateY(-2px) scale(1.05); box-shadow: 0 0 12px rgba(34, 211, 238, 0.2); }

/* 流程线 */
.flow-line { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.flow-line span {
  padding: 7px 14px;
  border-radius: 8px;
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.12), rgba(99, 102, 241, 0.12));
  border: 1px solid var(--line-strong);
  font-size: 13px;
  color: #dff6ff;
  transition: all 0.25s;
}
.flow-line span:hover { box-shadow: 0 0 14px rgba(34, 211, 238, 0.25); transform: translateY(-2px); }
.flow-line i { color: var(--cyan); font-style: normal; font-size: 14px; animation: arrowPulse 1.2s ease-in-out infinite; }
.flow-line i:nth-child(2) { animation-delay: 0.15s; }
.flow-line i:nth-child(3) { animation-delay: 0.3s; }
.flow-line i:nth-child(4) { animation-delay: 0.45s; }
@keyframes arrowPulse { 0%, 100% { opacity: 1; transform: translateX(0); } 50% { opacity: 0.4; transform: translateX(3px); } }

/* 步骤 */
.steps { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.step {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px;
  background: rgba(34, 211, 238, 0.05);
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}
.step:hover { border-color: var(--line-strong); background: rgba(34, 211, 238, 0.09); transform: translateX(6px); }
.step b {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid var(--line-strong);
  padding: 4px 11px;
  border-radius: 6px;
  white-space: nowrap;
}
.step span { font-size: 14px; font-weight: 600; color: #fff; }

/* 漏斗 */
.funnel { display: flex; flex-direction: column; gap: 7px; margin-top: 10px; }
.funnel-bar {
  height: 30px;
  width: var(--w, 100%);
  min-width: 46%;
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-size: 12.5px;
  color: #06121a;
  font-weight: 700;
  border-radius: 6px;
  background: linear-gradient(90deg, #6ee7ff, #22d3ee 70%, #38bdf8);
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.tab-panel.active .funnel-bar { opacity: 1; transform: translateX(0); }
.funnel-note { color: var(--text-dim); font-size: 12.5px; margin-top: 10px; }

/* ---------- 核心技术 ---------- */
.tech { background: linear-gradient(180deg, rgba(10, 14, 28, 0.5), transparent); }

.tech-arch {
  margin-bottom: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  background: radial-gradient(ellipse 60% 100% at 50% 0%, rgba(34, 211, 238, 0.07), transparent);
  position: relative;
  overflow: hidden;
}
.tech-arch::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.06), transparent);
  animation: scan 4s linear infinite;
}
@keyframes scan { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.arch-layer { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; position: relative; }
.arch-node {
  padding: 14px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #dff6ff;
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.12), rgba(99, 102, 241, 0.12));
  border: 1px solid var(--line-strong);
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
  animation: nodeFloat 3.5s ease-in-out infinite;
}
.arch-node:nth-child(2) { animation-delay: -0.7s; }
.arch-node:nth-child(3) { animation-delay: -1.4s; }
.arch-node:nth-child(4) { animation-delay: -2.1s; }
.arch-node:nth-child(5) { animation-delay: -2.8s; }
@keyframes nodeFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
.arch-node:hover { transform: translateY(-4px); box-shadow: 0 0 24px rgba(34, 211, 238, 0.25); }
.arch-flow {
  margin-top: 22px;
  text-align: center;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--cyan);
}

.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.tech-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  position: relative;
  overflow: hidden;
}
.tech-card::after {
  content: "";
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transition: transform 0.4s var(--ease);
  transform-origin: left;
}
.tech-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 40%;
  background: radial-gradient(ellipse 80% 100% at 50% 0%, rgba(34, 211, 238, 0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.tech-card:hover::before { opacity: 1; }
.tech-card:hover { transform: translateY(-12px) rotateX(4deg) scale(1.03); border-color: var(--line-strong); box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(34, 211, 238, 0.2); }
.tech-card:hover::after { transform: scaleX(1); }
.tech-icon { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 14px; display: flex; align-items: center; justify-content: center; color: var(--cyan); background: rgba(34, 211, 238, 0.08); border: 1px solid var(--line); transition: all 0.35s; }
.tech-card:hover .tech-icon { box-shadow: 0 0 20px rgba(34, 211, 238, 0.35); transform: rotate(8deg) scale(1.08); }
.tech-card svg { width: 32px; height: 32px; }
.tech-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.tech-card p { font-size: 13.5px; color: var(--text-sub); }

/* Lookalike */
.lookalike {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: radial-gradient(ellipse 70% 100% at 50% 0%, rgba(99, 102, 241, 0.08), transparent);
}
.lk-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 10px;
  background: rgba(13, 20, 40, 0.85);
  border: 1px solid var(--line-strong);
  transition: all 0.3s var(--ease);
}
.lk-step:hover { border-color: var(--cyan); box-shadow: 0 0 20px rgba(34, 211, 238, 0.3); transform: translateY(-4px) rotateX(3deg) scale(1.03); }
.lk-step b { font-family: var(--font-num); color: var(--cyan); font-size: 12px; }
.lk-step span { font-size: 13.5px; font-weight: 600; color: #fff; }
.lk-arrow { color: var(--cyan); font-size: 18px; animation: arrowPulse 1.2s ease-in-out infinite; }
.lk-arrow:nth-of-type(2) { animation-delay: 0.15s; }
.lk-arrow:nth-of-type(4) { animation-delay: 0.3s; }
.lk-arrow:nth-of-type(6) { animation-delay: 0.45s; }
.lk-arrow:nth-of-type(8) { animation-delay: 0.6s; }

/* 汽车旅程 */
.car-journey {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.05), rgba(139, 92, 246, 0.05));
  position: relative;
  overflow: hidden;
}
.car-journey::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.05), transparent);
  animation: scan 5s linear infinite;
}
.cj-stage {
  flex: 1;
  min-width: 110px;
  text-align: center;
  padding: 18px 12px;
  border-radius: 12px;
  background: rgba(13, 20, 40, 0.85);
  border: 1px solid var(--line-strong);
  position: relative;
  transition: all 0.3s var(--ease);
  z-index: 1;
}
.cj-stage:hover { border-color: var(--cyan); transform: translateY(-6px) rotateX(3deg) scale(1.03); box-shadow: 0 14px 36px rgba(34, 211, 238, 0.22); }
.cj-num {
  display: block;
  width: 26px; height: 26px;
  line-height: 26px;
  margin: 0 auto 8px;
  border-radius: 50%;
  font-family: var(--font-num);
  font-size: 12px;
  color: #06121a;
  background: linear-gradient(135deg, #6ee7ff, #22d3ee);
  font-weight: 700;
}
.cj-stage b { display: block; font-size: 15px; margin-bottom: 4px; color: #fff; }
.cj-stage small { color: var(--text-sub); font-size: 11.5px; }
.cj-arrow { color: var(--cyan); align-self: center; font-size: 16px; animation: arrowPulse 1.4s ease-in-out infinite; }

/* ---------- 案例 ---------- */
.cases { 
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.6), transparent); 
}

/* 案例区背景图 */
.cases-bg-img {
  position: absolute;
  top: 15%; left: -5%;
  width: 45%; height: 50%;
  z-index: 0;
  pointer-events: none;
}
.cases-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  opacity: 0.12;
  filter: hue-rotate(-20deg) brightness(0.6);
}
.cases-bg-overlay {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(90deg, transparent, rgba(5, 7, 15, 0.5));
}
.cases-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.wide-case { grid-column: 1 / -1; }
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
}
.case-card::before {
  content: "";
  position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--grad);
  opacity: 0.55;
  transition: opacity 0.35s, width 0.35s;
}
.case-card:hover::before { opacity: 1; width: 6px; }
.case-card { position: relative; z-index: 1; }
.case-card:hover { transform: translateY(-10px) rotateX(3deg) scale(1.02); border-color: var(--line-strong); box-shadow: 0 26px 60px rgba(0, 0, 0, 0.5), 0 0 24px rgba(34,211,238,0.15); }
.case-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 14px;
  background: rgba(34, 211, 238, 0.06);
}
.case-card h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.case-card p { font-size: 13.5px; color: var(--text-sub); margin-bottom: 18px; line-height: 1.7; }
.case-stats { display: flex; gap: 14px; flex-wrap: wrap; }
.case-stats div {
  flex: 1;
  min-width: 88px;
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  text-align: center;
  transition: all 0.3s;
}
.case-stats div:hover { border-color: var(--cyan); box-shadow: 0 0 14px rgba(34, 211, 238, 0.15); }
.case-stats b {
  display: block;
  font-family: var(--font-num);
  font-size: 22px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.case-stats span { font-size: 11.5px; color: var(--text-dim); }

/* ---------- 首页案例"查看更多"卡片 ---------- */
.case-more {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, rgba(34,211,238,0.05), rgba(99,102,241,0.05));
}
.case-more-inner { padding: 10px 0; }
.case-more-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  background: rgba(34,211,238,0.08);
  font-size: 22px;
  color: var(--cyan);
  margin-bottom: 16px;
  transition: all 0.35s var(--ease);
}
.case-more:hover .case-more-icon {
  transform: scale(1.15) rotate(45deg);
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(34,211,238,0.4);
  background: rgba(34,211,238,0.15);
}
.case-more h4 { font-size: 17px; font-weight: 700; margin-bottom: 10px; color: #fff; }
.case-more p { font-size: 13.5px; color: var(--text-sub); line-height: 1.7; margin-bottom: 0; }

/* ---------- 数据合规 ---------- */
.compliance { 
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.55), transparent); 
}

/* 合规区背景图 */
.compliance-bg-img {
  position: absolute;
  top: 10%; right: -3%;
  width: 40%; height: 55%;
  z-index: 0;
  pointer-events: none;
}
.compliance-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
  opacity: 0.10;
  filter: hue-rotate(30deg) brightness(0.6);
}
.compliance-bg-overlay {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: linear-gradient(270deg, transparent, rgba(5, 7, 15, 0.5));
}
.compliance-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.compliance-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.compliance-item:hover { transform: translateY(-8px) rotateX(3deg) scale(1.02); border-color: var(--line-strong); box-shadow: 0 18px 44px rgba(0,0,0,0.4), 0 0 24px rgba(34,211,238,0.15); }
.compliance-icon { font-size: 28px; margin-bottom: 14px; filter: drop-shadow(0 0 10px rgba(34, 211, 238, 0.4)); }
.compliance-item h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; }
.compliance-item p { font-size: 13.5px; color: var(--text-sub); }
.compliance-item { position: relative; z-index: 1; }
.compliance-item::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 0; height: 2px;
  background: var(--grad);
  transition: width 0.4s var(--ease);
}
.compliance-item:hover::after { width: 60%; }

/* ---------- 联系我们 ---------- */
.contact { padding-bottom: 120px; }
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 44px; align-items: start; }

.contact-info { display: flex; flex-direction: column; gap: 26px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.c-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  font-size: 17px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid var(--line-strong);
  transition: all 0.3s;
}
.contact-item:hover .c-icon { box-shadow: 0 0 18px rgba(34, 211, 238, 0.35); transform: scale(1.08); }
.contact-item b { display: block; font-size: 15px; margin-bottom: 4px; }
.contact-item p { color: var(--text-sub); font-size: 14px; }
.contact-note {
  margin-top: 10px;
  padding: 18px 20px;
  border-left: 3px solid var(--cyan);
  background: rgba(34, 211, 238, 0.05);
  border-radius: 0 10px 10px 0;
  font-size: 13.5px;
  color: var(--text-sub);
  line-height: 2;
}

.contact-form {
  background: var(--bg-card-solid);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px 30px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.contact-form::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  animation: formBorder 3s ease-in-out infinite;
}
@keyframes formBorder { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13.5px; margin-bottom: 7px; color: var(--text-main); font-weight: 500; }
.form-group label span { color: var(--cyan); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(8, 12, 26, 0.8);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text-main);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.25s, box-shadow 0.25s;
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-dim); }
.form-group select option { background: var(--bg-card-solid); color: var(--text-main); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group input.error, .form-group select.error, .form-group textarea.error { border-color: #f87171; box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }
.form-tip { margin-top: 12px; font-size: 12px; color: var(--text-dim); text-align: center; }
.form-tip.is-success { color: #4ade80; }
.form-tip.is-error { color: #f87171; }
.form-honey { display: none !important; }
.privacy-summary {
  margin: 4px 0 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.045);
  color: var(--text-sub);
  font-size: 12.5px;
  line-height: 1.8;
}
.privacy-summary strong { color: var(--text-main); }
.consent-list { display: grid; gap: 10px; margin: 0 0 16px; }
.consent-row {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 9px;
  align-items: start;
  color: var(--text-sub);
  font-size: 12.5px;
  line-height: 1.65;
  cursor: pointer;
}
.consent-row input {
  appearance: none;
  width: 17px;
  height: 17px;
  margin-top: 2px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(8, 12, 26, 0.8);
  cursor: pointer;
}
.consent-row input:checked {
  border-color: var(--cyan);
  background-color: var(--cyan);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5 6.5 12 13 4.5' fill='none' stroke='%2305070f' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 14px;
  box-shadow: 0 0 12px rgba(34, 211, 238, 0.25);
}
.consent-row input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.consent-row input.error { border-color: #f87171; box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }
.legal-link { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.legal-link:hover { color: #fff; }

.btn-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn-submitting .btn-spinner { display: inline-block; }
.btn-submitting .btn-text { display: none; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); background: rgba(4, 6, 14, 0.8); padding: 56px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 40px; }
.footer-brand .brand-mark { margin-bottom: 14px; }
.footer-brand .brand-mark img { height: 28px; width: auto; }
.footer-brand strong { font-size: 17px; display: block; margin-bottom: 6px; }
.footer-brand p { font-size: 13px; color: var(--text-dim); line-height: 1.8; }
.footer-links h5, .footer-contact h5 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 1px; }
.footer-links a { display: block; color: var(--text-sub); font-size: 13.5px; padding: 5px 0; transition: color 0.25s, padding-left 0.25s; }
.footer-links a:hover { color: var(--cyan); padding-left: 6px; }
.footer-contact p { color: var(--text-sub); font-size: 13.5px; padding: 4px 0; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-dim);
}
.footer-legal { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
.footer-legal a { color: var(--text-sub); transition: color 0.25s; }
.footer-legal a:hover { color: var(--cyan); }

/* ---------- 隐私政策与错误页 ---------- */
.legal-page, .error-page { padding: 110px 0 90px; min-height: 65vh; }
.legal-card, .error-card {
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--bg-card-solid);
  box-shadow: var(--shadow);
}
.legal-card h1, .error-card h1 { font-size: clamp(32px, 5vw, 52px); margin-bottom: 12px; }
.legal-meta { color: var(--text-dim); font-size: 13px; margin-bottom: 34px; }
.legal-card h2 { margin: 30px 0 10px; color: #fff; font-size: 20px; }
.legal-card h3 { margin: 18px 0 8px; color: var(--text-main); font-size: 15px; }
.legal-card p, .legal-card li { color: var(--text-sub); line-height: 1.9; font-size: 14px; }
.legal-card ul { padding-left: 20px; margin: 8px 0; }
.legal-card table { width: 100%; border-collapse: collapse; margin: 14px 0 6px; font-size: 13px; }
.legal-card th, .legal-card td { padding: 12px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.legal-card th { color: #fff; background: rgba(34, 211, 238, 0.06); }
.legal-card td { color: var(--text-sub); }
.legal-notice { margin: 18px 0; padding: 16px 18px; border-left: 3px solid var(--cyan); background: rgba(34, 211, 238, 0.05); border-radius: 0 10px 10px 0; }
.error-card { text-align: center; max-width: 720px; }
.error-code { color: var(--cyan); font-family: var(--font-num); font-size: clamp(68px, 14vw, 130px); font-weight: 900; line-height: 1; text-shadow: 0 0 35px rgba(34, 211, 238, 0.28); }
.error-card p { color: var(--text-sub); line-height: 1.8; margin: 12px auto 26px; }
.error-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

@media (max-width: 640px) {
  .legal-page, .error-page { padding: 90px 0 60px; }
  .legal-card { overflow-x: auto; }
  .legal-card table { min-width: 620px; }
}

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 26px; bottom: 30px;
  width: 46px; height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: rgba(13, 20, 40, 0.85);
  color: var(--cyan);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all 0.35s var(--ease);
  z-index: 99;
  backdrop-filter: blur(8px);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: rgba(34, 211, 238, 0.15); box-shadow: 0 0 24px rgba(34, 211, 238, 0.3); }

/* ---------- 滚动渐入动画 (3D 立体版) ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(40px) rotateX(8deg) scale(0.96);
  transform-style: preserve-3d;
  transform-origin: center bottom;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }

/* 3D 全局透视根 */
body { perspective: 1400px; }
.section, .hero, .navbar { transform-style: preserve-3d; }

/* ---------- HERO AI 视觉 ---------- */
.hero-visual {
  position: absolute;
  top: 10%;
  right: 6%;
  width: 320px;
  height: 320px;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-ai-img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  opacity: 0.85;
  filter: drop-shadow(0 0 40px rgba(34, 211, 238, 0.5)) brightness(1.1) contrast(1.1);
  animation: aiBreathe 4s ease-in-out infinite;
}
@keyframes aiBreathe {
  0%, 100% { transform: scale(1); opacity: 0.85; filter: drop-shadow(0 0 40px rgba(34, 211, 238, 0.5)) brightness(1.1) contrast(1.1); }
  50% { transform: scale(1.05); opacity: 1; filter: drop-shadow(0 0 60px rgba(34, 211, 238, 0.7)) brightness(1.2) contrast(1.15); }
}
.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid transparent;
  pointer-events: none;
}
.hero-ring.r1 {
  width: 240px;
  height: 240px;
  border: 1px solid rgba(34, 211, 238, 0.4);
  border-top-color: transparent;
  border-left-color: transparent;
  animation: ringRotate 12s linear infinite;
}
.hero-ring.r2 {
  width: 280px;
  height: 280px;
  border: 1px dashed rgba(99, 102, 241, 0.3);
  border-bottom-color: transparent;
  border-right-color: transparent;
  animation: ringRotate 18s linear infinite reverse;
}
.hero-ring.r3 {
  width: 320px;
  height: 320px;
  border: 1px solid rgba(139, 92, 246, 0.2);
  animation: ringPulse 4s ease-in-out infinite, ringRotate 25s linear infinite;
}
@keyframes ringRotate {
  to { transform: rotate(360deg); }
}
@keyframes ringPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}

/* ---------- 区块装饰图 ---------- */
.capability-deco {
  position: absolute;
  top: 0; right: 0;
  width: 45%;
  height: 100%;
  z-index: 0;
  opacity: 0.12;
  pointer-events: none;
  object-fit: cover;
  mask-image: linear-gradient(to left, black, transparent);
  -webkit-mask-image: linear-gradient(to left, black, transparent);
}
.tech-deco {
  position: absolute;
  top: 0; left: 0;
  width: 40%;
  height: 100%;
  z-index: 0;
  opacity: 0.10;
  pointer-events: none;
  object-fit: cover;
  mask-image: linear-gradient(to right, black, transparent);
  -webkit-mask-image: linear-gradient(to right, black, transparent);
}

/* ---------- 新增高级动效 ---------- */
/* 光晕脉冲 */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(34, 211, 238, 0.15); }
  50% { box-shadow: 0 0 40px rgba(34, 211, 238, 0.35); }
}
.glow-pulse { animation: glowPulse 3s ease-in-out infinite; }

/* 流光扫过 */
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.shimmer-text {
  background: linear-gradient(110deg, var(--text-sub) 30%, #fff 50%, var(--text-sub) 70%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s linear infinite;
}

/* 数字翻滚光效 */
@keyframes dataFlow {
  0% { background-position: 0% 0%; }
  100% { background-position: 100% 100%; }
}
.data-flow-bg {
  position: relative;
  overflow: hidden;
}
.data-flow-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(34, 211, 238, 0.04) 50%, transparent 60%);
  background-size: 200% 200%;
  animation: dataFlow 6s linear infinite;
  pointer-events: none;
}

/* 悬浮微动 */
@keyframes hoverFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.hover-float { animation: hoverFloat 4s ease-in-out infinite; }

/* ---------- 服务流程 ---------- */
.service-flow {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 30px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.05), rgba(99, 102, 241, 0.05));
  position: relative;
  overflow: hidden;
}
.service-flow::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.06), transparent);
  animation: scan 5s linear infinite;
}
.sf-step {
  flex: 1;
  min-width: 140px;
  text-align: center;
  padding: 20px 16px;
  position: relative;
  z-index: 1;
  transition: all 0.35s var(--ease);
}
.sf-step:hover { transform: translateY(-6px) rotateX(3deg) scale(1.05); }
.sf-num {
  display: block;
  width: 36px; height: 36px;
  line-height: 36px;
  margin: 0 auto 12px;
  border-radius: 50%;
  font-family: var(--font-num);
  font-size: 14px;
  color: #06121a;
  background: linear-gradient(135deg, #6ee7ff, #22d3ee);
  font-weight: 700;
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.4);
  transition: all 0.35s;
}
.sf-step:hover .sf-num { box-shadow: 0 0 30px rgba(34, 211, 238, 0.7); transform: scale(1.1); }
.sf-step b { display: block; font-size: 15px; margin-bottom: 4px; color: #fff; }
.sf-step small { color: var(--text-sub); font-size: 12px; }
.sf-line {
  width: 40px;
  align-self: center;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  position: relative;
}
.sf-line::after {
  content: "▸";
  position: absolute;
  right: -8px; top: 50%;
  transform: translateY(-50%);
  color: var(--cyan);
  font-size: 14px;
}

/* ---------- 发展历程时间线 ---------- */
.timeline-sec {
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.6), transparent);
  overflow: hidden;
}
.rain-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.35;
  pointer-events: none;
}
.timeline-track {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline-line {
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--cyan), var(--indigo), transparent);
  transform: translateX(-50%);
  z-index: 0;
}
.tl-item {
  position: relative;
  display: flex;
  margin-bottom: 40px;
  z-index: 1;
}
.tl-item.left { justify-content: flex-end; padding-right: calc(50% + 30px); }
.tl-item.right { justify-content: flex-start; padding-left: calc(50% + 30px); }
.tl-dot {
  position: absolute;
  left: 50%; top: 24px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.6);
  transform: translateX(-50%);
  z-index: 2;
  animation: dotPulse 2.5s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 18px rgba(34, 211, 238, 0.6); }
  50% { box-shadow: 0 0 30px rgba(34, 211, 238, 1); }
}
.tl-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 26px;
  max-width: 360px;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  backdrop-filter: blur(8px);
}
.tl-card:hover { transform: translateY(-6px) rotateX(3deg) scale(1.02); border-color: var(--line-strong); box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45), 0 0 22px rgba(34,211,238,0.12); }
.tl-year {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}
.tl-card b { display: block; font-size: 16px; margin-bottom: 6px; color: #fff; }
.tl-card small { color: var(--text-sub); font-size: 13px; line-height: 1.7; }

/* ---------- 滚动触发高级动画 ---------- */
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-50px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}
.tl-item.left .tl-card { animation: slideInLeft 0.7s var(--ease) both; }
.tl-item.right .tl-card { animation: slideInRight 0.7s var(--ease) both; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .about-content { grid-template-columns: 1fr; gap: 32px; }
  .about-wrap { padding: 40px 24px; }
  .scenario-bg-img, .cases-bg-img, .compliance-bg-img { display: none; }
  .sc-node { padding: 14px 18px; }
  .sc-link { width: 24px; }
  .source-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .dpi-grid { grid-template-columns: repeat(2, 1fr); }
  .six-w { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .hero-visual { display: none; }
  .scenario-chain { gap: 0; flex-wrap: wrap; }
  .sc-node { padding: 12px 14px; }
  .sc-node b { font-size: 14px; }
  .sc-link { width: 16px; }
  .service-flow { flex-direction: column; align-items: center; }
  .sf-line { width: 2px; height: 30px; background: linear-gradient(180deg, var(--cyan), transparent); }
  .sf-line::after { right: 50%; top: auto; bottom: -6px; transform: translateX(50%); }
  .timeline-track { max-width: 100%; }
  .timeline-line { left: 24px; }
  .tl-item.left, .tl-item.right { justify-content: flex-start; padding-left: 64px; padding-right: 0; }
  .tl-dot { left: 24px; }
  .nav-links {
    display: none;
    position: fixed;
    top: 0; right: 0;
    width: min(320px, 80vw);
    height: 100vh;
    background: rgba(5, 8, 18, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    border-left: 1px solid var(--line);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-link { font-size: 18px; }
  .nav-cta { display: none; }
  .hero-stats { padding: 24px; }
  .stat-card { min-width: 120px; }
  .stat-kw { font-size: 20px; }
  .panel-grid, .cases-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .car-journey { flex-direction: column; align-items: stretch; }
  .cj-arrow { transform: rotate(90deg); align-self: center; }
}

/* ---------- 各方数据源能力对比卡片 ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 10px;
}
.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  backdrop-filter: blur(8px);
}
.compare-card::after {
  content: "";
  position: absolute;
  right: -50px; top: -50px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.08), transparent 70%);
  transition: transform 0.4s var(--ease);
}
.compare-card:hover { transform: translateY(-10px) rotateX(3deg) scale(1.02); border-color: var(--line-strong); box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 28px rgba(34, 211, 238, 0.18); }
.compare-card:hover::after { transform: scale(1.5); }

/* 高亮卡（核心数据源） */
.compare-card.highlight {
  border-color: rgba(34, 211, 238, 0.4);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.08), inset 0 0 30px rgba(34, 211, 238, 0.04);
}
.compare-card.highlight::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}
.compare-badge {
  position: absolute;
  top: 14px; right: 14px;
  font-family: var(--font-num);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 20px;
  padding: 3px 10px;
  text-transform: uppercase;
  z-index: 2;
}

/* 卡片头部 */
.compare-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.compare-icon {
  font-size: 22px;
  color: var(--cyan);
  filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.5));
  line-height: 1;
}
.compare-head h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

/* 能力条 */
.compare-bars {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}
.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.bar-row > span {
  font-size: 12px;
  color: var(--text-sub);
  width: 56px;
  flex-shrink: 0;
  text-align: right;
}
.bar-track {
  flex: 1;
  height: 6px;
  background: rgba(80, 200, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.bar-fill {
  height: 100%;
  width: 0;
  border-radius: 3px;
  transition: width 1.2s var(--ease);
  position: relative;
}
.bar-fill::after {
  content: "";
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 8px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.35);
  filter: blur(2px);
}
/* data-level 颜色：5=最强cyan，4=青蓝，3=蓝，2=暗蓝 */
.bar-fill[data-level="5"] { background: linear-gradient(90deg, #0891b2, #22d3ee); }
.bar-fill[data-level="4"] { background: linear-gradient(90deg, #1d4ed8, #3b82f6); }
.bar-fill[data-level="3"] { background: linear-gradient(90deg, #4338ca, #6366f1); }
.bar-fill[data-level="2"] { background: linear-gradient(90deg, #312e81, #4f46e5); opacity: 0.7; }
.bar-fill[data-level="1"] { background: linear-gradient(90deg, #1e1b4b, #3730a3); opacity: 0.5; }

/* 卡片底部说明 */
.compare-note {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.7;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

@media (max-width: 1024px) {
  .compare-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .compare-grid { grid-template-columns: 1fr; }
  .cap-pipeline { flex-direction: column; align-items: center; gap: 16px; padding: 24px 10px; }
  .pipe-stage { max-width: 360px; width: 100%; }
  .pipe-flow { width: 40px; height: 40px; transform: rotate(90deg); }
}

@media (max-width: 560px) {
  .section { padding: 80px 0; }
  .hero { padding: 120px 18px 100px; }
  .hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); align-items: stretch; width: 100%; gap: 10px; padding: 16px; }
  .stat-divider { display: none; }
  .stat-card { min-width: 0; width: 100%; gap: 2px; }
  .stat-kw { font-size: 18px; white-space: normal; }
  .stat-label { font-size: 11px; letter-spacing: 0.5px; }
  .source-grid, .tech-grid, .compliance-grid, .dpi-grid, .compare-grid { grid-template-columns: 1fr; }
  .six-w { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ==========================================================================
   v3 — 3D 立体酷炫增强
   ========================================================================== */

/* 鼠标聚光灯 */
.spotlight {
  position: fixed;
  top: 0; left: 0;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.10), rgba(99, 102, 241, 0.04) 40%, transparent 70%);
  pointer-events: none;
  z-index: 9998;
  mix-blend-mode: screen;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.4s;
  will-change: transform;
}
.spotlight.active { opacity: 1; }

/* 卡片光晕追踪（动态传入 --mx --my） */
.tilt-card { position: relative; }
.tilt-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle 200px at var(--mx, 50%) var(--my, 50%), rgba(34, 211, 238, 0.15), transparent 60%);
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
  z-index: 3;
}
.tilt-card:hover::after { opacity: 1; }

/* 磁吸按钮 */
.btn { transition: transform 0.25s var(--ease), box-shadow 0.25s, background 0.25s, border-color 0.25s; }

/* 立体按钮 — 额外凸起阴影 */
.btn-primary {
  box-shadow: 0 8px 26px rgba(79, 124, 247, 0.35), 0 2px 0 rgba(34, 211, 238, 0.4) inset, 0 -2px 0 rgba(0,0,0,0.2) inset;
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 16px 40px rgba(34, 211, 238, 0.5), 0 2px 0 rgba(34, 211, 238, 0.6) inset, 0 -2px 0 rgba(0,0,0,0.2) inset;
}
.btn-ghost:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 28px rgba(34, 211, 238, 0.25), 0 2px 0 rgba(34, 211, 238, 0.2) inset;
}

/* 3D 浮动入场动画 */
@keyframes reveal3DUp {
  from { opacity: 0; transform: translateY(40px) rotateX(10deg) scale(0.95); }
  to { opacity: 1; transform: translateY(0) rotateX(0) scale(1); }
}
@keyframes reveal3DLeft {
  from { opacity: 0; transform: translateX(-40px) rotateY(10deg) scale(0.95); }
  to { opacity: 1; transform: translateX(0) rotateY(0) scale(1); }
}
@keyframes reveal3DRight {
  from { opacity: 0; transform: translateX(40px) rotateY(-10deg) scale(0.95); }
  to { opacity: 1; transform: translateX(0) rotateY(0) scale(1); }
}
@keyframes reveal3DZoom {
  from { opacity: 0; transform: scale(0.85) rotateX(15deg); }
  to { opacity: 1; transform: scale(1) rotateX(0); }
}

/* 滚动渐入变体 */
[data-reveal].revealed { animation: reveal3DUp 0.8s var(--ease) both; }
[data-reveal="left"].revealed { animation: reveal3DLeft 0.8s var(--ease) both; }
[data-reveal="right"].revealed { animation: reveal3DRight 0.8s var(--ease) both; }
[data-reveal="zoom"].revealed { animation: reveal3DZoom 0.8s var(--ease) both; }

/* 交错延迟 */
[data-reveal]:nth-child(1).revealed { animation-delay: 0.05s; }
[data-reveal]:nth-child(2).revealed { animation-delay: 0.12s; }
[data-reveal]:nth-child(3).revealed { animation-delay: 0.19s; }
[data-reveal]:nth-child(4).revealed { animation-delay: 0.26s; }
[data-reveal]:nth-child(5).revealed { animation-delay: 0.33s; }
[data-reveal]:nth-child(6).revealed { animation-delay: 0.40s; }

/* 全息光泽扫过（hero 标题） */
.hero-title { position: relative; }
.hero-title::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,0.12) 50%, transparent 65%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: holoShine 4s linear infinite;
  pointer-events: none;
}
@keyframes holoShine {
  0% { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* 导航栏玻璃态微动 */
.navbar.scrolled {
  box-shadow: 0 10px 40px rgba(0,0,0,0.3), 0 0 0 1px var(--line) inset;
}

/* 粒子增强 — 节点脉冲环 */
#heroCanvas { filter: drop-shadow(0 0 20px rgba(34,211,238,0.15)); }

/* section title 高光扫过动画 */
.section-title::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 42%, rgba(255,255,255,0.45) 50%, transparent 58%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleShine 4s ease-in-out infinite;
  pointer-events: none;
  z-index: 3;
}
@keyframes titleShine {
  0% { background-position: 200% center; }
  60%, 100% { background-position: -200% center; }
}

/* 数据能力管线 — 核心节点 3D 浮动 */
.pipe-hub {
  transform-style: preserve-3d;
  animation: treeFloat3D 5s ease-in-out infinite;
}
.pipe-stage:nth-child(odd) .pipe-hub { animation-delay: -2.5s; }
@keyframes treeFloat3D {
  0%, 100% { transform: translateY(0) rotateX(0); }
  50% { transform: translateY(-8px) rotateX(2deg); }
}

/* 返回顶部 — 3D 旋转入场 */
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) rotateZ(0);
  animation: backTopPop 0.5s var(--ease);
}
@keyframes backTopPop {
  from { transform: translateY(16px) rotateZ(-180deg) scale(0.5); opacity: 0; }
  to { transform: translateY(0) rotateZ(0) scale(1); opacity: 1; }
}
.back-top:hover {
  background: rgba(34, 211, 238, 0.18);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.4);
  transform: translateY(-3px) rotateZ(15deg) scale(1.1);
}

/* 环形进度环装饰 — 数据能力区 */
.cap-pipeline::before {
  content: "";
  position: absolute;
  top: -60px; left: 50%;
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 1px dashed rgba(34, 211, 238, 0.15);
  transform: translateX(-50%);
  animation: ringSlowSpin 20s linear infinite;
  pointer-events: none;
}
@keyframes ringSlowSpin { to { transform: translateX(-50%) rotate(360deg); } }

/* 移动端关闭聚光灯和复杂3D */
@media (max-width: 860px) {
  .spotlight { display: none; }
  [data-reveal] { transform: translateY(24px) scale(0.98); }
  [data-reveal].revealed { animation: reveal3DUp 0.6s var(--ease) both; }
  [data-reveal="left"].revealed,
  [data-reveal="right"].revealed { animation: reveal3DUp 0.6s var(--ease) both; }
}

/* ==========================================================================
   v4 — 多页面导航（下拉菜单） + 二级页面样式
   ========================================================================== */

/* ---------- 导航下拉菜单 ---------- */
.nav-item { position: relative; }
.nav-item > .nav-link { cursor: pointer; }
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 240px;
  background: rgba(8, 12, 26, 0.96);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 10px 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0,0,0,0.6), 0 0 30px rgba(34,211,238,0.08);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  z-index: 1001;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0; right: 0;
  height: 8px;
}
.nav-drop-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  font-size: 14px;
  color: var(--text-sub);
  transition: color 0.2s, background 0.2s, padding-left 0.25s;
  position: relative;
}
.nav-drop-link::before {
  content: "▸";
  color: var(--cyan);
  font-size: 10px;
  opacity: 0;
  transition: opacity 0.2s;
}
.nav-drop-link:hover {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.06);
  padding-left: 26px;
}
.nav-drop-link:hover::before { opacity: 1; }
.nav-drop-link .drop-icon {
  font-size: 16px;
  color: var(--cyan);
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  filter: drop-shadow(0 0 4px rgba(34,211,238,0.4));
}
.nav-drop-link .drop-icon svg { width: 16px; height: 16px; }
.nav-drop-divider {
  height: 1px;
  background: var(--line);
  margin: 6px 16px;
}

/* 下拉箭头 */
.nav-item > .nav-link .nav-arrow {
  font-size: 9px;
  margin-left: 4px;
  transition: transform 0.3s;
  display: inline-block;
}
.nav-item:hover > .nav-link .nav-arrow { transform: rotate(180deg); }

/* ---------- 二级页面 Page Hero ---------- */
.page-hero {
  position: relative;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 24px 80px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 50% 0%, rgba(34, 211, 238, 0.12), transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 50%, rgba(99, 102, 241, 0.08), transparent 70%);
  z-index: 0;
}
.page-hero-content { position: relative; z-index: 2; max-width: 760px; }
.page-hero-eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 5px;
  color: var(--cyan);
  margin-bottom: 20px;
  text-shadow: 0 0 16px rgba(34, 211, 238, 0.4);
}
.page-hero-title {
  font-size: clamp(32px, 5vw, 50px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 18px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 22px rgba(109, 141, 255, 0.25));
}
.page-hero-desc {
  font-size: 17px;
  color: var(--text-sub);
  line-height: 1.9;
  letter-spacing: 1px;
}

/* 面包屑 */
.breadcrumb {
  position: relative;
  z-index: 2;
  margin-top: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 1px;
}
.breadcrumb a { color: var(--text-sub); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb span.sep { color: var(--text-dim); }
.breadcrumb span.current { color: var(--cyan); }

/* ---------- CTA 区块（二级页面底部引导） ---------- */
.cta-section {
  position: relative;
  padding: 80px 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(34, 211, 238, 0.08), transparent 70%),
    linear-gradient(180deg, transparent, rgba(10, 14, 28, 0.4), transparent);
}
.cta-wrap {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
  padding: 50px 40px;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: rgba(10, 15, 32, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}
.cta-wrap::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  border-radius: 24px 24px 0 0;
}
.cta-wrap h3 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 4px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, #38e8ff 0%, #5b9eff 45%, #a78bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  display: inline-block;
}
.cta-wrap h3::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(110deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: ctaShine 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes ctaShine {
  0% { left: -60%; }
  60%, 100% { left: 120%; }
}
.cta-wrap p {
  font-size: 15.5px;
  color: var(--text-sub);
  margin-bottom: 30px;
  line-height: 1.8;
}
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ---------- 首页模块卡（概览跳转卡） ---------- */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.overview-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
}
.overview-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.overview-card::after {
  content: "";
  position: absolute;
  right: -60px; top: -60px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.08), transparent 70%);
  transition: transform 0.4s var(--ease);
}
.overview-card:hover {
  transform: translateY(-10px) rotateX(3deg) scale(1.02);
  border-color: var(--line-strong);
  box-shadow: 0 26px 60px rgba(0,0,0,0.5), 0 0 30px rgba(34,211,238,0.12);
}
.overview-card:hover::before { transform: scaleX(1); }
.overview-card:hover::after { transform: scale(1.6); }
.ov-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--cyan);
  background: linear-gradient(135deg, rgba(34,211,238,0.1), rgba(99,102,241,0.08));
  border: 1px solid rgba(34,211,238,0.2);
  margin-bottom: 20px;
  filter: drop-shadow(0 0 10px rgba(34,211,238,0.25));
  transition: all 0.35s;
}
.ov-icon svg { width: 28px; height: 28px; }
.overview-card:hover .ov-icon {
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
  transform: rotate(8deg) scale(1.08);
}
.overview-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.overview-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}
.ov-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
  transition: gap 0.25s;
}
.ov-link:hover { gap: 10px; }
.ov-link .arrow { transition: transform 0.25s; }
.overview-card:hover .ov-link .arrow { transform: translateX(4px); }

/* ---------- 首页 about 精简版 ---------- */
.about-quick {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  padding: 56px 48px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-bg {
  position: absolute;
  inset: 0;
  background: url('../images/about-data.webp') center/cover no-repeat;
  opacity: 0.15;
  filter: brightness(0.7) contrast(1.3) saturate(1.3);
  -webkit-mask: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.1) 100%);
  mask: linear-gradient(90deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.1) 100%);
  animation: aboutBgPan 18s ease-in-out infinite alternate;
  z-index: 0;
}
@keyframes aboutBgPan {
  from { transform: translateX(0) scale(1.05); }
  to { transform: translateX(-3%) scale(1.08); }
}
.about-quick::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(34,211,238,0.08), transparent 60%),
              radial-gradient(circle at 80% 50%, rgba(99,102,241,0.06), transparent 60%);
  z-index: 1;
}
.about-quick-left {
  position: relative;
  z-index: 2;
}
.about-logo {
  width: 56px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 10px;
  filter: drop-shadow(0 0 16px rgba(34, 211, 238, 0.4));
}
.about-quick-left h3 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.5;
}
.about-quick-left p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 20px;
}
.about-quick-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.about-quick-tags span {
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-sub);
  transition: all 0.25s;
}
.about-quick-tags span:hover { color: var(--cyan); border-color: var(--cyan); transform: translateY(-2px); }

/* about 右侧统计卡 */
.about-quick-right {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.about-stat {
  background: rgba(15, 22, 44, 0.6);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.35s var(--ease);
  backdrop-filter: blur(6px);
}
.about-stat:hover {
  border-color: var(--line-strong);
  transform: translateY(-6px) rotateX(3deg) scale(1.03);
  box-shadow: 0 14px 36px rgba(0,0,0,0.4), 0 0 20px rgba(34,211,238,0.12);
}
.about-stat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid var(--line);
  font-size: 20px;
  color: var(--cyan);
  margin-bottom: 14px;
  filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.3));
  transition: all 0.35s;
}
.about-stat:hover .about-stat-icon {
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.35);
  transform: rotate(8deg) scale(1.08);
}
.about-stat b {
  display: block;
  font-family: var(--font-num);
  font-size: 18px;
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}
.about-stat small {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- 首页场景摘要网格 ---------- */

/* ---------- section 科技感背景 ---------- */
.sec-with-bg { position: relative; }
.sec-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  filter: brightness(0.7) contrast(1.15) saturate(1.4);
  -webkit-mask: linear-gradient(180deg, transparent 0%, rgba(0,0,0,1) 15%, rgba(0,0,0,1) 85%, transparent 100%);
  mask: linear-gradient(180deg, transparent 0%, rgba(0,0,0,1) 15%, rgba(0,0,0,1) 85%, transparent 100%);
  z-index: 0;
  pointer-events: none;
}
.sec-with-bg .container { position: relative; z-index: 1; }

/* ---------- 首页场景摘要网格 ---------- */
.home-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- 首页发展历程横条 ---------- */
.home-timeline-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  position: relative;
  padding: 0 10px;
}
.home-timeline-bar::before {
  content: "";
  position: absolute;
  top: 28px;
  left: 5%;
  right: 5%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(34,211,238,0.3), rgba(99,102,241,0.3), rgba(139,92,246,0.3), transparent);
}
.htl-item {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}
.htl-item::before {
  content: "";
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(34,211,238,0.5);
  margin: 0 auto 16px;
  display: block;
  border: 3px solid var(--bg-deep);
  transition: all 0.35s;
}
.htl-item:hover::before {
  transform: scale(1.3);
  box-shadow: 0 0 20px rgba(34,211,238,0.8);
}
.htl-year {
  display: block;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--cyan);
  margin-bottom: 6px;
}
.htl-item b {
  display: block;
  font-size: 14px;
  color: #fff;
  margin-bottom: 4px;
}
.htl-item small {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
}

/* ---------- 响应式补充 ---------- */
@media (max-width: 1080px) {
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
  .home-scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .home-timeline-bar { flex-wrap: wrap; gap: 20px; }
  .home-timeline-bar::before { display: none; }
  .htl-item { flex: 0 0 30%; }
  .about-quick { grid-template-columns: 1fr; gap: 32px; padding: 40px 30px; }
  .about-quick-right { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 860px) {
  .nav-dropdown { display: none; }
  .overview-grid { grid-template-columns: 1fr; }
  .home-scenario-grid { grid-template-columns: 1fr; }
  .home-timeline-bar { flex-direction: column; gap: 16px; }
  .htl-item { flex: 1; }
  .about-quick-right { grid-template-columns: 1fr 1fr; }
  .page-hero { min-height: 320px; padding: 130px 20px 60px; }
  .cta-wrap { padding: 36px 24px; }
}
@media (max-width: 560px) {
  .page-hero-title { font-size: 28px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
}