/* ========================================
   汐棂渡服务网 - 样式表
   现代深色科技风格
   ======================================== */

/* ---- 基础重置 ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 主色调 */
  --bg-base: #0a0e1a;
  --bg-surface: #111726;
  --bg-elevated: #1a2138;
  --bg-card: #161d2e;
  --bg-card-hover: #1c2440;

  /* 文字色 */
  --text-primary: #e8ecf4;
  --text-secondary: #9aa5b8;
  --text-muted: #6b7689;
  --text-bright: #ffffff;

  /* 强调色 */
  --accent-cyan: #00e5ff;
  --accent-purple: #7c4dff;
  --accent-cyan-soft: rgba(0, 229, 255, 0.1);
  --accent-purple-soft: rgba(124, 77, 255, 0.1);

  /* 渐变 */
  --grad-primary: linear-gradient(135deg, #00e5ff 0%, #7c4dff 100%);
  --grad-primary-soft: linear-gradient(135deg, rgba(0, 229, 255, 0.15) 0%, rgba(124, 77, 255, 0.15) 100%);

  /* 边框 */
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(0, 229, 255, 0.3);

  /* 阴影 */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(0, 229, 255, 0.15);
  --shadow-glow-purple: 0 0 40px rgba(124, 77, 255, 0.2);

  /* 间距 */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  /* 过渡 */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- 通用渐变文字 ---- */
.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- 通用按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-primary);
  color: var(--text-bright);
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
  color: var(--accent-cyan);
}

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

.btn-outline:hover {
  background: var(--accent-cyan-soft);
  border-color: var(--accent-cyan);
}

.btn-sm {
  padding: 10px 24px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ---- 导航栏 ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.9);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 0.5px;
}

.logo-sub {
  font-weight: 400;
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-links a {
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-bright);
  background: var(--bg-elevated);
}

.nav-cta {
  background: var(--grad-primary) !important;
  color: var(--text-bright) !important;
  font-weight: 500;
  box-shadow: 0 2px 12px rgba(0, 229, 255, 0.2);
}

.nav-cta:hover {
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero 首页 ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 72px;
}

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

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 12s ease-in-out infinite;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent-cyan);
  top: 10%;
  left: 5%;
}

.orb-2 {
  width: 350px;
  height: 350px;
  background: var(--accent-purple);
  bottom: 10%;
  right: 5%;
  animation-delay: -4s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: #00bcd4;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}

.orb-3 {
  animation: float-center 12s ease-in-out infinite;
}

@keyframes float-center {
  0%, 100% { transform: translate(-50%, -50%); }
  50% { transform: translate(-40%, -55%); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 40px 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 28px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 229, 255, 0); }
}

.hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 2px;
}

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.scroll-line {
  width: 1px;
  height: 30px;
  background: linear-gradient(to bottom, var(--accent-cyan), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---- 通用 Section ---- */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-family: 'Orbitron', sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
}

/* ---- 服务网介绍 ---- */
.about {
  background: var(--bg-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-left {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-card {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.about-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateX(4px);
}

.about-card-icon {
  flex-shrink: 0;
}

.about-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.about-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.about-feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-primary);
}

.about-feature h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 16px;
}

.about-intro {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 24px;
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-primary);
}

.check-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--accent-cyan-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-cta {
  margin-top: 8px;
}

/* ---- 服务行业 ---- */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.industry-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.industry-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: 0.6s var(--delay, 0s);
}

.industry-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.industry-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-primary-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
}

.industry-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 10px;
}

.industry-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.industry-card ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.industry-card ul li {
  font-size: 13px;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
}

.industry-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0.6;
}

/* ---- 核心技术 ---- */
.tech {
  background: var(--bg-surface);
}

.tech-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.tech-card-featured {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
  min-height: 100%;
}

.tech-card-glow {
  position: absolute;
  top: -50%;
  right: -30%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.tech-card-content {
  position: relative;
  z-index: 1;
}

.tech-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent-cyan-soft);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  font-size: 12px;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.tech-card-icon {
  margin-bottom: 24px;
}

.tech-card-featured h3 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 14px;
}

.tech-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tags span {
  padding: 6px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.tech-tags span:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
}

.tech-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-content: start;
}

.tech-mini-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.tech-mini-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateY(-4px);
}

.tech-mini-icon {
  flex-shrink: 0;
}

.tech-mini-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 6px;
}

.tech-mini-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- 产品收费 ---- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.price-card {
  position: relative;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.price-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateY(-6px);
}

.price-featured {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(0, 229, 255, 0.05) 100%);
}

.price-featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.price-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--grad-primary);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-bright);
  white-space: nowrap;
}

.price-header {
  margin-bottom: 8px;
}

.price-level {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-top: 8px;
  margin-bottom: 4px;
}

.price-currency {
  font-size: 20px;
  font-weight: 600;
  color: var(--accent-cyan);
}

.price-num {
  font-size: 40px;
  font-weight: 900;
  font-family: 'Orbitron', sans-serif;
  color: var(--text-bright);
}

.price-unit {
  font-size: 14px;
  color: var(--text-muted);
}

.price-target {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.price-features {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-primary);
}

.feat-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--accent-cyan-soft);
  color: var(--accent-cyan);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.feat-disabled {
  color: var(--text-muted) !important;
}

.feat-x {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* 增值服务 */
.addon-services {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.addon-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 24px;
}

.addon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.addon-item {
  padding: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.addon-item:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
}

.addon-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 6px;
}

.addon-info p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.addon-price {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: 'Orbitron', sans-serif;
}

.addon-unit {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
}

/* 收费免责说明 */
.pricing-note {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* ---- 行业资讯 ---- */
.news {
  background: var(--bg-surface);
}

.news-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.news-featured {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.news-featured-img {
  position: relative;
  height: 100%;
  min-height: 400px;
  background: linear-gradient(135deg, #0d1b2a 0%, #1a2340 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.news-img-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(0, 229, 255, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(124, 77, 255, 0.15) 0%, transparent 50%);
}

.news-img-content {
  position: relative;
  z-index: 1;
  padding: 32px;
}

.news-cat {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-cyan);
  color: var(--bg-base);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.news-featured h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-featured p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
}

.news-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  transform: translateX(4px);
}

.news-item-date {
  flex-shrink: 0;
  text-align: center;
  min-width: 56px;
}

.news-day {
  display: block;
  font-size: 28px;
  font-weight: 900;
  font-family: 'Orbitron', sans-serif;
  color: var(--accent-cyan);
  line-height: 1;
}

.news-month {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.news-item-content {
  flex: 1;
}

.news-cat-sm {
  display: inline-block;
  padding: 2px 10px;
  background: var(--accent-purple-soft);
  color: var(--accent-purple);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  margin-bottom: 8px;
}

.news-item-content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 6px;
  line-height: 1.4;
}

.news-item-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.news-more {
  text-align: center;
  margin-top: 40px;
}

/* ---- 联系我们 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 40px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.contact-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
}

.contact-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-primary-soft);
  border-radius: var(--radius-sm);
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 4px;
}

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

.contact-sub {
  font-size: 13px !important;
  color: var(--text-muted) !important;
}

/* 联系表单 */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
}

.contact-form-header {
  margin-bottom: 28px;
}

.contact-form-header h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 8px;
}

.contact-form-header p {
  font-size: 14px;
  color: var(--text-secondary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-soft);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group textarea {
  resize: vertical;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239aa5b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px;
  padding-right: 40px;
}

.form-note {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 12px;
}

.form-link {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-success {
  display: none;
  position: absolute;
  inset: 0;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 40px;
}

.form-success.active {
  display: flex;
}

.success-icon {
  animation: successPop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes successPop {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.form-success h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-bright);
}

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

/* ---- 页脚 ---- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand .footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 20px 0;
  max-width: 360px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-link:hover {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: var(--accent-cyan-soft);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 16px;
}

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

.footer-col a:hover {
  color: var(--accent-cyan);
}

/* 页脚合规信息 */
.footer-compliance {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.compliance-statement {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
}

.footer-bottom {
  padding-top: 8px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-icp {
  margin-top: 8px;
}

.footer-icp a {
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-icp a:hover {
  color: var(--accent-cyan);
}

/* ---- 动画类 ---- */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .about-grid,
  .tech-layout,
  .news-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto 60px;
  }

  .addon-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-side {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 12px 16px;
  }

  .nav-cta {
    text-align: center;
    margin-top: 8px;
  }

  .nav-toggle {
    display: flex;
  }

  .industry-grid,
  .tech-side {
    grid-template-columns: 1fr;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section {
    padding: 60px 0;
  }

  .contact-form-wrap {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 36px;
  }

  .about-feature,
  .tech-card-featured {
    padding: 24px;
  }

  .price-card {
    padding: 24px 20px;
  }
}