/* ============================================
   玖云智能AI物流客服机器人 - 微官网样式
   深色科技风 | AI + 物流行业
   ============================================ */

/* === 基础变量 === */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #0d1b3e;
    --bg-card: rgba(15, 25, 55, 0.6);
    --bg-card-hover: rgba(20, 35, 70, 0.8);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.45);
    --accent: #00d4ff;
    --accent-glow: rgba(0, 212, 255, 0.3);
    --accent-secondary: #7c5cfc;
    --gradient-1: linear-gradient(135deg, #00d4ff, #7c5cfc);
    --gradient-2: linear-gradient(135deg, #0a0e27, #0d1b3e, #0f2347);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(0, 212, 255, 0.3);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

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

/* === 导航栏 === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-img {
    height: 28px;
    width: auto;
    object-fit: contain;
    border-radius: 6px;
    filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.3));
    transition: var(--transition);
}

.logo:hover .logo-img {
    filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.6));
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.btn-demo {
    padding: 8px 24px;
    border: 1px solid var(--accent);
    border-radius: 24px;
    color: var(--accent);
    font-size: 0.875rem;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-demo:hover {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

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

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden; background: var(--navy);
}

.hero-video-wrap {
  position: absolute; inset: 0; pointer-events: none;
}
.hero-video {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  transition: opacity 1s ease;
}
.hero-video.active { opacity: 0.45; }
.hero-video.inactive { opacity: 0; }
.hero-video-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 25% 45%, rgba(0,136,238,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 40%, rgba(200,150,62,0.06) 0%, transparent 50%),
    linear-gradient(180deg, rgba(11,26,46,0.15) 0%, rgba(11,26,46,0.50) 60%, #0b1a2e 100%);
}

/* 数据流线 */
.data-lines { position: absolute; inset: 0; pointer-events: none; }
.data-line {
  position: absolute; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(0,136,238,0.5), transparent);
  animation: dataFlow 4s ease-in-out infinite;
}
.data-line:nth-child(1) { left: 15%; height: 55%; top: -10%; animation-delay: 0s; }
.data-line:nth-child(2) { left: 35%; height: 40%; top: -5%; animation-delay: 0.7s; }
.data-line:nth-child(3) { left: 65%; height: 50%; top: -12%; animation-delay: 1.4s; }
.data-line:nth-child(4) { left: 85%; height: 35%; top: -3%; animation-delay: 2.1s; }
.data-line::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; border-radius: 2px;
  background: var(--blue-bright);
  box-shadow: 0 0 12px rgba(0,136,238,0.6), 0 0 30px rgba(0,136,238,0.3);
  animation: dataHead 4s ease-in-out infinite;
}
.data-line:nth-child(1)::after { animation-delay: 0s; }
.data-line:nth-child(2)::after { animation-delay: 0.7s; }
.data-line:nth-child(3)::after { animation-delay: 1.4s; }
.data-line:nth-child(4)::after { animation-delay: 2.1s; }
@keyframes dataFlow {
  0% { transform: translateY(-100%); opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { transform: translateY(200%); opacity: 0; }
}
@keyframes dataHead {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-content {
  position: relative; z-index: 2;
  max-width: 1280px; margin: 0 auto; padding: 100px 48px 80px;
  display: flex; align-items: center; gap: 80px; width: 100%;
}
.hero-text { flex: 1; max-width: 560px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 18px; border-radius: 20px;
  font-size: 13px; letter-spacing: 2px;
  background: rgba(0,136,238,0.15);
  border: 1px solid rgba(0,136,238,0.3);
  color: #7cc4ff; margin-bottom: 28px;
}
.hero-tag::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--blue-bright);
  box-shadow: 0 0 8px var(--blue-bright);
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%,100% { box-shadow: 0 0 4px var(--blue-bright),0 0 10px rgba(0,136,238,0.3); }
  50% { box-shadow: 0 0 10px var(--blue-bright),0 0 24px rgba(0,136,238,0.5); }
}
.hero h1 {
  font-size: 52px; font-weight: 800; line-height: 1.2; letter-spacing: 1px;
  color: #fff; margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #5cb8ff, #00c6ff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 17px; color: rgba(255,255,255,0.65); line-height: 1.8;
  margin-bottom: 36px; max-width: 460px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 13px 32px; border-radius: 8px; font-size: 15px;
  font-weight: 600; cursor: pointer; text-decoration: none;
  letter-spacing: 0.5px; transition: all var(--transition);
  font-family: var(--font); border: none;
}
.btn-primary {
  background: var(--blue); color: #fff;
  box-shadow: 0 4px 20px rgba(0,102,204,0.35);
}
.btn-primary:hover {
  background: var(--blue-bright);
  box-shadow: 0 6px 28px rgba(0,136,238,0.5);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent; color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
}
.btn-outline:hover { border-color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.06); }

.hero-stats {
  margin-top: 48px; display: flex; gap: 40px;
}
.hero-stat { text-align: left; }
.hero-stat-num {
  font-size: 32px; font-weight: 800; color: #fff;
  letter-spacing: 1px;
}
.hero-stat-num span { color: var(--blue-bright); }
.hero-stat-label { font-size: 13px; color: rgba(255,255,255,0.5); letter-spacing: 1px; margin-top: 2px; }

.hero-canvas-wrap {
  flex-shrink: 0; width: 440px; height: 540px; position: relative;
}
.hero-canvas-wrap canvas { width: 100% !important; height: 100% !important; }


/* === 通用 Section === */
.section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.section-bg-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.04) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === 产品介绍卡片 === */
.product-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.product-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    color: var(--accent);
    transition: var(--transition);
}

.product-card:hover .card-icon {
    color: var(--accent);
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.product-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.product-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === 解决方案模块 === */
.solution-section {
    background: var(--bg-primary);
}

.solution-modules {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.module-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.module-card::after {
    content: '';
    position: absolute;
    right: -60px;
    bottom: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
    transition: var(--transition);
}

.module-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.module-card:hover::after {
    transform: scale(1.5);
}

.module-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

.module-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.module-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* === 数字员工 === */
.digital-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

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

.digital-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.digital-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.digital-avatar {
    margin-top: -80px;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}

.avatar-ring {
    width: 120px;
    /* height: 100px; */
    /* border-radius: 50%; */
    position: relative;
    
    /* padding: 3px; */
    /* background: linear-gradient(135deg, #00d4ff, #7c5cfc);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3), 0 0 40px rgba(124, 92, 252, 0.15);
    animation: avatarGlow 3s ease-in-out infinite; */
}

.avatar-img {
    width: 100%;
    /* height: 100%; */
    /* border-radius: 50%; */
    object-fit: cover;
    display: block;
}

/* .avatar-ring::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    animation: ringPulse 2s ease-in-out infinite;
}

.avatar-ring::after {
    content: '';
    position: absolute;
    inset: -12px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.08);
    animation: ringPulse 2s ease-in-out infinite 0.5s;
} */

@keyframes avatarGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.3), 0 0 40px rgba(124, 92, 252, 0.15); }
    50% { box-shadow: 0 0 30px rgba(0, 212, 255, 0.5), 0 0 60px rgba(124, 92, 252, 0.25); }
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.digital-card h3 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.digital-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* === AI工作台 === */
.workbench-section {
    background: var(--bg-primary);
}

.workbench-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.workbench-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    transition: var(--transition);
}

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

.wb-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.wb-content h4 {
    font-size: 1.05rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.wb-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* === 工单场景流程 === */
.scenario-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.scenario-flow {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    padding: 40px 0;
}

.flow-line {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent-secondary), var(--accent), transparent);
    opacity: 0.3;
}

.flow-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.flow-step {
    text-align: center;
    flex: 1;
}

.step-node {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.step-node::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.step-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
}

.flow-step:hover .step-node {
    border-color: var(--accent);
    box-shadow: 0 0 24px var(--accent-glow);
    transform: scale(1.1);
}

.flow-step p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* === 操作流程 === */
.process-section {
    background: var(--bg-primary);
}

.process-flow {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.process-flow-2 {
    margin-bottom: 32px;
}

.process-step {
    display: flex;
    align-items: center;
    gap: 8px;
}

.step-badge {
    padding: 14px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    transition: var(--transition);
    white-space: nowrap;
}

.step-badge small {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
}

.step-badge.highlight {
    border-color: var(--accent);
    background: rgba(0, 212, 255, 0.08);
    color: var(--accent);
}

.step-arrow {
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 700;
    opacity: 0.5;
}

.process-note {
    text-align: center;
    padding: 20px;
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: var(--radius);
    max-width: 700px;
    margin: 0 auto;
}

.process-note p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* === 价值亮点 === */
.value-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

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

.value-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.value-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.value-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 24px;
    color: var(--accent);
}

.value-card:hover .value-icon {
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.value-card h3 {
    font-size: 1.15rem;
    margin-bottom: 16px;
    font-weight: 600;
    line-height: 1.5;
}

.value-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* === 关于我们 === */
.about-section {
    background: var(--bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text .section-tag {
    margin-bottom: 20px;
}

.about-text .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-stats {
    display: flex;
    gap: 48px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.about-visual .robot-scene {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(0, 212, 255, 0.15))
            drop-shadow(0 0 80px rgba(0, 212, 255, 0.08));
}

/* === 联系我们 === */
.contact-section {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.contact-info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.contact-info-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.contact-info-card:hover::before {
    transform: scaleX(1);
}

.contact-icon-wrap {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    color: var(--accent);
    transition: var(--transition);
}

.contact-info-card:hover .contact-icon-wrap {
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.contact-info-content h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.contact-info-content p {
    font-size: 1.05rem;
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.5;
}

/* 分公司分布 */
.contact-branches {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    backdrop-filter: blur(10px);
    max-width: 720px;
    margin: 0 auto;
    transition: var(--transition);
}

.contact-branches:hover {
    border-color: var(--border-hover);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.branches-header {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.branches-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    animation: dotPulse 2s ease-in-out infinite;
}

.branches-header h4 {
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
}

.branches-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.branch-tag {
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 20px;
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.branch-tag:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--accent);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

/* === Footer === */
.footer {
    background: rgba(8, 12, 30, 0.95);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}

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

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 0.9rem;
}

.footer-links h4 {
    font-size: 0.95rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 12px;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* === 返回顶部 === */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-4px);
}

/* === 响应式 === */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .solution-modules {
        grid-template-columns: 1fr;
    }

    .digital-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

    .value-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-visual {
        display: none;
    }

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

    .contact-branches {
        flex-direction: column;
        gap: 24px;
        text-align: center;
        padding: 32px 24px;
    }

    .branches-list {
        justify-content: center;
    }

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

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .flow-steps {
        flex-wrap: wrap;
        gap: 24px;
    }

    .flow-line {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        border-bottom: 1px solid var(--border);
        gap: 16px;
    }

    .mobile-toggle {
        display: flex;
    }

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

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

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .section {
        padding: 80px 0;
    }

    .process-flow {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

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

    .contact-info-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 32px;
    }

    .about-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}