/* ============================================
   上海心达 - 官方网站
   设计语言：企业红 × 高端商务 × B2B专业
   ============================================ */

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

:root {
    --primary: #E60012;           /* 用友正红主色 */
    --primary-dark: #C5000F;
    --primary-light: #FF1A2E;
    --primary-bg: #FFF0F0;
    --accent: #f59e0b;            /* 橙色点缀 - 与LOGO黄方块呼应 */
    /* 科技感辅助色 */
    --tech-cyan: #00D4FF;         /* 科技青 */
    --tech-blue: #0A84FF;         /* 科技蓝 */
    --tech-purple: #8b5cf6;       /* 科技紫 */
    --tech-dark: #0a0e1a;         /* 深空黑 */
    --tech-dark-2: #111827;       /* 深蓝灰 */
    --tech-dark-3: #1a1f3a;       /* 深靛蓝 */
    --tech-grid: rgba(0, 212, 255, 0.06);  /* 网格线 */
    --tech-glow: rgba(0, 212, 255, 0.4);   /* 青色光晕 */
    --tech-glow-red: rgba(230, 0, 18, 0.4); /* 红色光晕 */
    --text-1: #0f172a;
    --text-2: #334155;
    --text-3: #64748b;
    --text-light: #94a3b8;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --bg-tinted: #FFF0F0;
    --border: #e2e8f0;
    --dark: #0a0e1a;
    --dark-2: #8B0000;
    --gradient-primary: linear-gradient(135deg, #E60012 0%, #FF1A2E 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #1a1f3a 100%);
    --gradient-tech: linear-gradient(135deg, #0a0e1a 0%, #1a1f3a 50%, #2d1010 100%);
    --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #111827 40%, #1a1228 70%, #2d1010 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
    --shadow-sm: 0 2px 8px rgba(230,0,18,0.06);
    --shadow: 0 4px 20px rgba(230,0,18,0.08);
    --shadow-lg: 0 10px 40px rgba(230,0,18,0.12);
    --shadow-xl: 0 20px 60px rgba(230,0,18,0.15);
    --shadow-tech: 0 8px 32px rgba(0, 212, 255, 0.12);
    --shadow-tech-lg: 0 12px 48px rgba(0, 212, 255, 0.18);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-1);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
    transition: all var(--transition);
}
.navbar.scrolled {
    border-bottom-color: rgba(0, 212, 255, 0.20);
    box-shadow: 0 4px 24px rgba(0, 212, 255, 0.08);
    background: rgba(10, 14, 26, 0.95);
}
.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: nowrap;
    gap: 16px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo-img {
    width: 200px;
    height: 56px;
    object-fit: contain;
}
.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.logo-cn {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 2px;
}
.logo-en {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 4px;
    font-weight: 500;
    margin-top: 2px;
}
.nav-menu {
    display: flex;
    gap: 2px;
    align-items: center;
    flex-wrap: nowrap;
    flex-shrink: 1;
    min-width: 0;
}
.nav-link {
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    border-radius: 8px;
    transition: all var(--transition);
    position: relative;
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-link:hover { color: #fff; background: rgba(0, 212, 255, 0.10); }
.nav-link.active { color: var(--tech-cyan); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: linear-gradient(90deg, var(--tech-cyan), var(--primary));
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.btn-primary-sm {
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition);
}
.btn-primary-sm:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,0,18,0.3); }
.menu-toggle {
    display: none;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}
.menu-toggle span {
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: var(--transition);
}

/* ============================================
   通用按钮
   ============================================ */
.btn-primary, .btn-outline, .btn-ghost, .btn-primary-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: 10px;
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-primary {
    padding: 14px 32px;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 15px;
    box-shadow: 0 4px 14px rgba(230,0,18,0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(230,0,18,0.4);
}
.btn-outline {
    padding: 14px 32px;
    background: rgba(255,255,255,0.1);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.4);
    font-size: 15px;
}
.btn-outline:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.7);
}
.btn-ghost {
    padding: 14px 28px;
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
    font-size: 15px;
}
.btn-ghost:hover {
    background: var(--primary);
    color: #fff;
}
.btn-primary-lg {
    padding: 18px 44px;
    background: #fff;
    color: var(--primary);
    font-size: 17px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}
.btn-primary-lg:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}

/* ============================================
   Hero Banner
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 80px;
    overflow: hidden;
    background: var(--gradient-hero);
}
.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}
.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 60% at 20% 30%, rgba(230, 0, 18, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 70%, rgba(0, 212, 255, 0.10) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 50% 100%, rgba(139, 92, 246, 0.08) 0%, transparent 60%);
}
.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.06) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
    animation: grid-drift 20s linear infinite;
}
@keyframes grid-drift {
    from { background-position: 0 0, 0 0; }
    to { background-position: 60px 60px, 60px 60px; }
}
.hero-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(230, 0, 18, 0.25) 0%, transparent 70%);
    top: 10%;
    right: 10%;
    border-radius: 50%;
    filter: blur(60px);
    animation: glow-pulse 8s ease-in-out infinite;
}
.hero-glow-2 {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    bottom: 10%;
    left: 5%;
    border-radius: 50%;
    filter: blur(50px);
    animation: glow-pulse 8s ease-in-out infinite;
    animation-delay: 4s;
}
@keyframes glow-pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-inner {
    position: relative;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    min-height: calc(100vh - 200px);
}
.hero-content { color: #fff; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    background: rgba(0, 212, 255, 0.10);
    border: 1px solid rgba(0, 212, 255, 0.30);
    border-radius: 30px;
    font-size: 13px;
    color: var(--tech-cyan);
    margin-bottom: 28px;
    font-weight: 500;
    backdrop-filter: blur(8px);
}
.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--tech-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.5); }
    50% { box-shadow: 0 0 0 8px rgba(0, 212, 255, 0); }
}
.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 28px;
    color: #fff;
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.15);
}
.title-line1, .title-line2 { display: block; }
.title-line2 em {
    font-style: normal;
    background: linear-gradient(135deg, #E60012 0%, #FF1A2E 50%, #00D4FF 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease-in-out infinite;
}
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.hero-subtitle {
    font-size: 18px;
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 560px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 28px 0;
    border-top: 1px solid rgba(0, 212, 255, 0.20);
}
.stat-num {
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
    margin-bottom: 8px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}
.stat-num sup {
    font-size: 22px;
    color: var(--tech-cyan);
    margin-left: 2px;
}
.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
}

/* Hero 右侧视觉 — 中心圆 + 散落卡片 */
.hero-visual {
    position: relative;
    width: 100%;
    height: 640px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 中心 YonSuite */
.visual-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, #E60012 0%, #FF1A2E 60%, #ff4757 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 50px rgba(230,0,18,0.4), inset 0 -4px 12px rgba(0,0,0,0.1);
    z-index: 5;
    animation: pulse-glow 3.5s ease-in-out infinite;
}
/* 描边环 — 紧贴中心圆外侧，不延伸至卡片 */
.visual-center-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 196px;
    height: 196px;
    border-radius: 50%;
    border: 1.5px dashed rgba(230,0,18,0.35);
    pointer-events: none;
    animation: rotate-slow 30s linear infinite;
}
.visual-center-inner {
    text-align: center;
    color: #fff;
}
.visual-center-title {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 4px;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.visual-center-sub {
    font-size: 12px;
    opacity: 0.92;
    letter-spacing: 1px;
}
@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 12px 50px rgba(230,0,18,0.4), inset 0 -4px 12px rgba(0,0,0,0.1); }
    50%      { box-shadow: 0 16px 70px rgba(230,0,18,0.6), inset 0 -4px 12px rgba(0,0,0,0.1); }
}
@keyframes rotate-slow {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to   { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 6 张场景卡片环形分布 */
.visual-card {
    position: absolute;
    top: 50%;
    left: 50%;
    --angle: 0deg;
    transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-258px);
    z-index: 4;
}
.visual-card-1 { --angle: -135deg; }
.visual-card-2 { --angle:  -15deg; }
.visual-card-3 { --angle:  135deg; }
.visual-card-4 { --angle:   45deg; }
.visual-card-5 { --angle:  175deg; }
.visual-card-6 { --angle:  -65deg; }

.visual-card-inner {
    transform: rotate(calc(-1 * var(--angle)));
    background: rgba(255,255,255,0.98);
    border: 1px solid rgba(230,0,18,0.10);
    border-radius: 16px;
    padding: 20px 18px;
    width: 210px;
    box-shadow: 0 10px 30px rgba(230,0,18,0.12);
    transition: box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: vc-float 5s ease-in-out infinite;
}
.visual-card-1 .visual-card-inner { animation-delay: 0s;   }
.visual-card-2 .visual-card-inner { animation-delay: 0.7s; }
.visual-card-3 .visual-card-inner { animation-delay: 1.4s; }
.visual-card-4 .visual-card-inner { animation-delay: 2.1s; }
.visual-card-5 .visual-card-inner { animation-delay: 2.8s; }
.visual-card-6 .visual-card-inner { animation-delay: 3.5s; }
@keyframes vc-float {
    0%, 100% { transform: rotate(calc(-1 * var(--angle))) translateY(0); }
    50%      { transform: rotate(calc(-1 * var(--angle))) translateY(-8px); }
}
.visual-card-inner:hover {
    animation: none;
    transform: rotate(calc(-1 * var(--angle))) translateY(-10px) scale(1.04);
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 18px 44px rgba(230,0,18,0.22);
}

.vc-icon {
    width: 46px;
    height: 46px;
    border-radius: 11px;
    flex-shrink: 0;
}
.vc-text {
    flex: 1;
    min-width: 0;
}
.vc-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-1);
    line-height: 1.2;
    margin-bottom: 5px;
}
.vc-desc {
    font-size: 12px;
    color: var(--text-3);
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.5);
    font-size: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.scroll-line {
    width: 1px;
    height: 30px;
    background: linear-gradient(to bottom, rgba(0, 212, 255, 0.5), transparent);
    animation: scroll-down 1.5s ease-in-out infinite;
}
@keyframes scroll-down {
    0% { transform: translateY(-10px); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateY(10px); opacity: 0; }
}

/* ============================================
   信任背书条
   ============================================ */
.trust-bar {
    background: var(--tech-dark);
    padding: 40px 0;
    border-bottom: 1px solid rgba(0, 212, 255, 0.12);
}
.trust-bar .container {
    display: flex;
    align-items: center;
    gap: 48px;
}
.trust-text {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    font-weight: 600;
    white-space: nowrap;
    position: relative;
    padding-right: 48px;
}
.trust-text::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 24px;
    background: rgba(255,255,255,0.15);
}
.trust-logos {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 24px;
    flex-wrap: wrap;
}
.trust-item {
    font-size: 18px;
    font-weight: 700;
    color: rgba(255,255,255,0.45);
    opacity: 0.7;
    transition: var(--transition);
    letter-spacing: 0.5px;
}
.trust-item:hover { opacity: 1; color: var(--tech-cyan); }

/* ============================================
   通用 section
   ============================================ */
.section {
    padding: 110px 0;
    position: relative;
}
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 72px;
}
.section-head.light { color: var(--text-1); }
.section-head.light .section-tag { color: var(--primary); }
.section-head.light .section-desc { color: var(--text-3); }
.section-tag {
    font-size: 13px;
    color: var(--tech-cyan);
    font-weight: 600;
    letter-spacing: 3px;
    margin-bottom: 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.section-tag::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tech-cyan));
    border-radius: 1px;
}
.section-tag::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--tech-cyan), transparent);
    border-radius: 1px;
}
.section-title {
    font-size: 44px;
    font-weight: 800;
    color: var(--text-1);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.section-head.light .section-title { color: var(--text-1); }
.accent { color: var(--primary); }
.section-desc {
    font-size: 17px;
    color: var(--text-3);
}

/* ============================================
   关于心达
   ============================================ */
.about { background: var(--bg); }
.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 72px;
    align-items: start;
}
.about-intro h3 {
    font-size: 30px;
    line-height: 1.4;
    color: var(--text-1);
    margin-bottom: 24px;
    font-weight: 700;
}
.about-intro p {
    font-size: 16px;
    color: var(--text-2);
    margin-bottom: 16px;
    line-height: 1.8;
}
.about-intro strong {
    color: var(--primary);
    font-weight: 600;
}
.about-actions {
    display: flex;
    gap: 16px;
    margin-top: 28px;
}
.about-org {
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--border);
}
.org-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary);
}
.org-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.org-card {
    padding: 20px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.org-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}
.org-num {
    font-size: 12px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.org-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 6px;
}
.org-desc {
    font-size: 13px;
    color: var(--text-3);
}
.city-coverage {
    margin-top: 60px;
    padding: 40px;
    background: var(--bg-tinted);
    border-radius: var(--radius-lg);
    text-align: center;
}
.coverage-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 24px;
}
.city-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.city-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #fff;
    border-radius: 30px;
    font-size: 14px;
    color: var(--text-2);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}
.city-item.ext {
    background: var(--gradient-primary);
    color: #fff;
}
.city-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
}
.city-item.ext .city-dot { background: #fff; }

/* ============================================
   核心优势
   ============================================ */
.advantages {
    background: var(--bg-soft);
    color: var(--text-1);
    position: relative;
    overflow: hidden;
}
.advantages::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230, 0, 18, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}
.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
}
.adv-card {
    padding: 36px 32px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.adv-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: 0 14px 36px rgba(230, 0, 18, 0.10);
}
.adv-num {
    font-size: 14px;
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.adv-card h3 {
    font-size: 22px;
    color: var(--text-1);
    margin-bottom: 12px;
    font-weight: 700;
}
.adv-card p {
    font-size: 14px;
    color: var(--text-3);
    line-height: 1.7;
}

/* ============================================
   数据智能中枢 / 产品与方案
   ============================================ */
.products { background: var(--bg-soft); }
.hub-video-intro {
    margin: 0 0 28px;
    padding: 30px 36px;
    background: linear-gradient(135deg, #fff 0%, #fff7f7 100%);
    border: 1px solid rgba(230,0,18,0.12);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.hub-video-copy { padding: 4px 8px; }
.hub-video-kicker {
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.8px;
    margin-bottom: 16px;
}
.hub-video-copy h3 {
    margin: 0 0 18px;
    color: var(--text-1);
    font-size: clamp(26px, 3vw, 40px);
    line-height: 1.35;
}
.hub-video-copy h3 span { color: var(--primary); }
.hub-video-copy p {
    max-width: 480px;
    margin: 0 0 28px;
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.9;
}
.hub-video-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 56px; }
.hub-video-card { overflow: hidden; background: #fff; border: 1px solid rgba(230,0,18,0.1); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.hub-video-screen { position: relative; overflow: hidden; aspect-ratio: 16 / 9; background: #1a1a1a; }
.hub-video-screen iframe { width: 100%; height: 100%; display: block; border: 0; }
.hub-video-meta { padding: 20px 22px 22px; }
.hub-video-index { color: var(--primary); font-size: 12px; font-weight: 700; letter-spacing: 1px; }
.hub-video-meta h3 { margin: 10px 0 8px; color: var(--text-1); font-size: 20px; line-height: 1.4; }
.hub-video-meta p { margin: 0; color: var(--text-2); font-size: 14px; line-height: 1.7; }
.hub-function-intro { margin: 0 0 24px; }
.hub-function-intro h3 { margin: 6px 0 8px; font-size: 24px; color: var(--text-1); }
.hub-function-intro p { margin: 0; color: var(--text-2); font-size: 14px; }
.hub-function-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 56px; }
.hub-function-card { position: relative; min-height: 142px; padding: 22px 20px; background: #fff; border: 1px solid rgba(230,0,18,0.1); border-radius: var(--radius); transition: transform var(--transition), box-shadow var(--transition); }
.hub-function-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.hub-function-index { color: var(--primary); font-size: 12px; font-weight: 700; letter-spacing: 1px; }
.hub-function-card h4 { margin: 14px 0 8px; font-size: 17px; color: var(--text-1); }
.hub-function-card p { margin: 0; color: var(--text-2); font-size: 13px; line-height: 1.7; }
@media (max-width: 900px) {
    .hub-video-grid { grid-template-columns: 1fr; }
    .hub-function-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hub-video-intro { padding: 24px 20px; }
}
@media (max-width: 520px) { .hub-function-grid { grid-template-columns: 1fr; } }

.product-matrix {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 72px;
}
.pm-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.pm-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}
.pm-card.pm-flagship::before { background: linear-gradient(90deg, #8b5cf6, #a855f7); }
.pm-card.pm-bip::before { background: linear-gradient(90deg, #f59e0b, #f97316); }
.pm-card.pm-u9::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.pm-card.pm-chanjet::before { background: linear-gradient(90deg, #ef4444, #f43f5e); }
.pm-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.pm-badge {
    display: inline-block;
    padding: 4px 10px;
    background: linear-gradient(135deg, #8b5cf6, #a855f7);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 1px;
    margin-bottom: 16px;
}
.pm-badge.gold { background: linear-gradient(135deg, #f59e0b, #f97316); }
.pm-card h3 {
    font-size: 26px;
    color: var(--primary);
    font-weight: 800;
    margin-bottom: 6px;
}
.pm-sub {
    font-size: 13px;
    color: var(--text-3);
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--border);
}
.pm-features {
    list-style: none;
    margin-bottom: 20px;
}
.pm-features li {
    font-size: 13px;
    color: var(--text-2);
    padding: 6px 0 6px 18px;
    position: relative;
    line-height: 1.6;
}
.pm-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}
.pm-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.pm-tags span {
    font-size: 11px;
    padding: 3px 10px;
    background: var(--primary-bg);
    color: var(--primary-dark);
    border-radius: 12px;
    font-weight: 500;
}

.solutions {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(0,0,0,0.03);
}
.sol-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 28px;
}
.sol-title {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-1);
}
.sol-title .bip {
    color: var(--primary);
}
.sol-subtitle {
    text-align: center;
    font-size: 14px;
    color: var(--text-3);
    margin-top: 8px;
}
.sol-item {
    text-align: center;
    padding: 20px 8px 18px;
    border-radius: var(--radius);
    background: transparent;
    transition: all var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
}
.sol-item:hover {
    background: var(--primary-bg);
    border-color: rgba(230,0,18,0.12);
    transform: translateY(-3px);
}
.sol-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: #fff;
    border: 1.5px solid var(--primary);
    box-shadow: 0 2px 8px rgba(230,0,18,0.08);
    transition: all var(--transition);
}
.sol-icon svg {
    width: 36px;
    height: 36px;
    display: block;
}
.sol-item:hover .sol-icon {
    transform: scale(1.08);
    box-shadow: 0 6px 18px rgba(230,0,18,0.18);
}
.sol-item.active .sol-icon {
    background: linear-gradient(135deg, #E60012, #FF1A2E);
    color: #fff;
    border-color: #E60012;
    box-shadow: 0 8px 22px rgba(230,0,18,0.28);
    transform: scale(1.05);
}
.sol-item.active .sol-name {
    color: var(--primary);
}
.sol-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-1);
    transition: color var(--transition);
}

/* ============================================
   实施体系
   ============================================ */
.implementation { background: var(--bg); }
.impl-process {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    margin-bottom: 60px;
    padding: 40px 0;
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    position: relative;
}
.impl-step {
    flex: 1;
    text-align: center;
    padding: 0 16px;
    position: relative;
}
.impl-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    align-self: center;
    margin: 0 8px;
    position: relative;
}
.impl-line::after {
    content: '›';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 24px;
    font-weight: 700;
}
.step-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}
.step-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 6px;
}
.step-desc {
    font-size: 13px;
    color: var(--text-3);
}

.deliverables {
    background: linear-gradient(135deg, #FFF5F5 0%, #FFF0F0 100%);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    border: 1px solid rgba(230,0,18,0.12);
}
.deliv-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 28px;
    text-align: center;
}
.deliv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.deliv-item {
    background: #fff;
    padding: 20px;
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.deliv-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}
.deliv-num {
    display: inline-block;
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    text-align: center;
    line-height: 28px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 10px;
}
.deliv-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 6px;
    line-height: 1.5;
}
.deliv-tag {
    font-size: 11px;
    color: var(--primary);
    font-weight: 500;
}

/* ============================================
   实施体系
   ============================================ */
.implementation {
    background: var(--bg-soft);
    color: var(--text-1);
    position: relative;
    overflow: hidden;
}
.impl-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
    position: relative;
    z-index: 1;
}
.impl-step {
    background: #fff;
    border-radius: 12px;
    padding: 24px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    min-width: 160px;
    flex: 1;
    max-width: 200px;
}
.impl-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.impl-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 6px;
}
.impl-desc {
    font-size: 12px;
    color: var(--text-3);
    line-height: 1.5;
}
.impl-arrow {
    font-size: 24px;
    color: var(--primary);
    font-weight: 300;
    flex-shrink: 0;
}
.impl-deliverables {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    position: relative;
    z-index: 1;
}
.impl-deliv-title {
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 32px;
}
.impl-deliv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.impl-deliv-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-soft);
    border-radius: 8px;
    border-left: 3px solid var(--primary);
}
.impl-deliv-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(230,0,18,0.08);
    border-radius: 50%;
    flex-shrink: 0;
}
.impl-deliv-text {
    font-size: 13px;
    color: var(--text-2);
    font-weight: 500;
}

@media (max-width: 768px) {
    .impl-flow { flex-direction: column; gap: 12px; }
    .impl-arrow { transform: rotate(90deg); }
    .impl-step { max-width: 100%; width: 100%; }
    .impl-deliv-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .impl-deliv-grid { grid-template-columns: 1fr; }
}

/* ============================================
   服务体系
   ============================================ */
.service {
    background: var(--bg-soft);
    color: var(--text-1);
    position: relative;
    overflow: hidden;
}
.service::before {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(230,0,18,0.06) 0%, transparent 70%);
    border-radius: 50%;
}
.service-system {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 24px;
    margin-bottom: 60px;
    position: relative;
}
.ss-tier {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition);
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.ss-tier:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 14px 36px rgba(230,0,18,0.10);
}
.ss-tier.tier-premium {
    background: linear-gradient(135deg, #FFF5F5 0%, #FFF0F0 100%);
    border-color: rgba(230,0,18,0.25);
}
.tier-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary);
}
.tier-name.tier-free { color: var(--text-3); }
.tier-name.tier-train { color: var(--primary); }
.ss-tier.tier-premium .tier-name { color: var(--primary-dark); }
.tier-content { display: flex; flex-direction: column; gap: 18px; }
.tier-item {
    padding: 12px 0;
    border-bottom: 1px dashed var(--border);
}
.tier-item:last-child { border-bottom: none; }
.tier-label {
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 4px;
}
.tier-value {
    font-size: 16px;
    color: var(--text-1);
    font-weight: 600;
}
.csm-loop {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 40px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.loop-title {
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 24px;
}
.loop-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.loop-item {
    padding: 12px 24px;
    background: var(--primary-bg);
    border: 1px solid rgba(230,0,18,0.15);
    border-radius: 30px;
    font-size: 15px;
    color: var(--primary-dark);
    font-weight: 600;
}
.loop-arrow {
    color: var(--primary);
    font-size: 20px;
    font-weight: 700;
}

/* ============================================
   资质荣誉
   ============================================ */
.honor { background: var(--bg-soft); }
.cert-badges {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 60px;
}
.cert-badge {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius);
    border: 2px solid transparent;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}
.cert-badge:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.cert-badge.platinum { border-color: #8b5cf6; }
.cert-badge.gold { border-color: var(--accent); }
.cert-badge.diamond { border-color: var(--primary); }
.cb-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    flex-shrink: 0;
}
.cert-badge.platinum .cb-icon { background: linear-gradient(135deg, #8b5cf6, #a855f7); }
.cert-badge.gold .cb-icon { background: linear-gradient(135deg, #f59e0b, #f97316); }
.cert-badge.diamond .cb-icon { background: var(--gradient-primary); }
.cb-name { font-size: 16px; font-weight: 700; color: var(--text-1); margin-bottom: 4px; }
.cb-desc { font-size: 12px; color: var(--text-3); }

.cert-section, .award-section {
    margin-bottom: 60px;
}
.cs-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 28px;
    padding-left: 16px;
    border-left: 4px solid var(--primary);
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.cert-img {
    position: relative;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: all var(--transition);
    aspect-ratio: 3/4;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cert-img:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.cert-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}
.cert-img::after {
    content: attr(data-caption);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: linear-gradient(to top, rgba(10,30,44,0.9), transparent);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    transform: translateY(100%);
    transition: var(--transition);
}
.cert-img:hover::after { transform: translateY(0); }

.award-scroll {
    overflow: hidden;
    position: relative;
    margin: 0 -32px;
    padding: 0 32px;
}
.award-track {
    display: flex;
    gap: 20px;
    animation: scroll-awards 60s linear infinite;
    padding: 8px 0;
}
.award-track:hover { animation-play-state: paused; }
@keyframes scroll-awards {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}
.award-card {
    flex: 0 0 280px;
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
}
.award-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.award-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}
.award-name {
    padding: 16px 20px 4px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-1);
    line-height: 1.4;
}
.award-org {
    padding: 0 20px 16px;
    font-size: 12px;
    color: var(--text-3);
}
.scroll-hint {
    text-align: center;
    color: var(--text-light);
    font-size: 12px;
    margin-top: 16px;
    letter-spacing: 2px;
}

/* ============================================
   客户案例
   ============================================ */
.cases { background: var(--bg); }
.case-image-placeholder {
    overflow: hidden;
    max-width: 1180px;
    margin: 0 auto 48px;
    padding: 14px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    text-align: center;
}
.case-image-placeholder img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: calc(var(--radius-lg) - 6px);
}
.case-image-placeholder p {
    margin: 14px 0 2px;
    color: var(--text-2);
    font-size: 13px;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}
.case-card {
    padding: 32px 28px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}
.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 0;
    background: var(--gradient-primary);
    transition: var(--transition);
}
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.case-card:hover::before { height: 100%; }
.case-tag {
    display: inline-block;
    padding: 3px 12px;
    background: var(--primary-bg);
    color: var(--primary-dark);
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    margin-bottom: 16px;
}
.case-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 8px;
}
.case-desc {
    font-size: 13px;
    color: var(--text-3);
    line-height: 1.6;
}
.case-cta {
    text-align: center;
    padding: 40px;
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--border);
}
.case-cta p {
    font-size: 18px;
    color: var(--text-2);
    margin-bottom: 20px;
    font-weight: 500;
}

/* ============================================
   关注心达 - 多端推广（参考畅捷通样式）
   ============================================ */
.follow {
    background: #ffffff;
    color: var(--text-1);
    position: relative;
    padding: 100px 0;
}

/* 顶部CTA区：立即体验 + 服务热线 */
.follow-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    margin: 40px auto 56px;
    flex-wrap: wrap;
}
.follow-trial-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 18px 64px;
    background: var(--primary);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(230, 0, 18, 0.28);
    transition: all var(--transition);
    letter-spacing: 2px;
}
.follow-trial-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(230, 0, 18, 0.36);
}
.follow-phone {
    text-align: left;
    padding-left: 48px;
    border-left: 2px solid var(--border);
}
.follow-phone-label {
    font-size: 14px;
    color: var(--text-3);
    margin-bottom: 6px;
    letter-spacing: 1px;
}
.follow-phone-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
    font-family: 'DIN Alternate', 'Helvetica Neue', Arial, sans-serif;
}
.follow-phone-sub {
    font-size: 12px;
    color: var(--text-3);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* 二维码矩阵 */
.qrcode-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 820px;
    margin: 0 auto 56px;
}
.qrcode-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px 24px;
    text-align: center;
    transition: all 0.35s ease;
    box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.qrcode-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(230, 0, 18, 0.12);
}
.qrcode-img-wrap {
    width: 168px;
    height: 168px;
    margin: 0 auto 18px;
    background: #fff;
    border-radius: 14px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}
.qrcode-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.qrcode-platform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 10px;
}
.qrcode-icon {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    display: inline-block;
    background-size: 60% 60%;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    flex-shrink: 0;
}
.qrcode-icon.icon-xhs {
    background: linear-gradient(135deg, #ff2442 0%, #ff5e3a 100%);
}
.qrcode-icon.icon-xhs::before {
    content: '书';
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    line-height: 22px;
    display: block;
    text-align: center;
}
.qrcode-icon.icon-video {
    background: linear-gradient(135deg, #ff5e5e, #ff9a3c);
}
.qrcode-icon.icon-video::before {
    content: '▶';
    color: #fff;
    font-size: 11px;
    line-height: 22px;
    display: block;
    text-align: center;
}
.qrcode-icon.icon-douyin {
    background: #000;
}
.qrcode-icon.icon-douyin::before {
    content: 'd';
    color: #fe2c55;
    font-size: 14px;
    font-weight: 700;
    font-style: italic;
    line-height: 22px;
    display: block;
    text-align: center;
}
.qrcode-desc {
    color: var(--text-3);
    font-size: 13px;
    line-height: 1.7;
}

/* 社交媒体图标区 */
.social-icons {
    text-align: center;
    margin-top: 32px;
}
.social-icons-label {
    font-size: 15px;
    color: var(--text-2);
    margin-bottom: 18px;
    font-weight: 500;
    letter-spacing: 1px;
}
.social-icons-list {
    display: inline-flex;
    gap: 16px;
}
.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}
.social-icon span {
    width: 22px;
    height: 22px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
}
.social-icon.icon-xhs { background: linear-gradient(135deg, #ff2442, #ff5e3a); }
.social-icon.icon-xhs span {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M5 5h14v14H5z' fill='none'/%3E%3Ctext x='12' y='17' text-anchor='middle' font-size='14' font-weight='bold' fill='white'%3E书%3C/text%3E%3C/svg%3E");
}
.social-icon.icon-wechat { background: linear-gradient(135deg, #ff5e5e, #ff9a3c); }
.social-icon.icon-wechat span {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l4-2 4 2V5z'/%3E%3C/svg%3E");
}
.social-icon.icon-douyin { background: #000; }
.social-icon.icon-douyin span {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23fe2c55'%3E%3Cpath d='M16.6 5.82s.51.5 0 0A4.28 4.28 0 0 1 15.54 3h-3.09v12.4a2.59 2.59 0 0 1-2.59 2.5c-1.43 0-2.59-1.17-2.59-2.5s1.16-2.5 2.59-2.5c.27 0 .53.04.78.13V9.74a5.74 5.74 0 0 0-.78-.05A5.6 5.6 0 0 0 4.26 15.3 5.6 5.6 0 0 0 9.86 21a5.6 5.6 0 0 0 5.6-5.7V9.01a7.32 7.32 0 0 0 4.27 1.36V7.28a4.85 4.85 0 0 1-3.13-1.46z'/%3E%3C/svg%3E");
}
.social-icon:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 8px 20px rgba(230, 0, 18, 0.25);
}

/* ============================================
   右侧浮动 · 滚动联系面板（仿畅捷通）
   ============================================ */
.side-contact {
    position: fixed;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.sc-item {
    width: 60px;
    height: 70px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    user-select: none;
}
.sc-item:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateX(-2px);
}
.sc-item:hover .sc-icon { filter: brightness(0) invert(1); }
.sc-item:hover .sc-text { color: #fff; }
.sc-item:hover .sc-popup { opacity: 1; visibility: visible; transform: translateX(0); }

.sc-trial {
    background: var(--primary);
    border-color: var(--primary);
}
.sc-trial .sc-icon { filter: brightness(0) invert(1); }
.sc-trial .sc-text { color: #fff; }
.sc-trial:hover {
    background: var(--primary-dark);
}
.sc-trial-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    text-decoration: none;
    color: inherit;
    position: absolute;
    inset: 0;
    z-index: 2;
}

.sc-icon {
    width: 22px;
    height: 22px;
    margin-bottom: 4px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--primary);
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-position: center;
    mask-position: center;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
}
.sc-icon-trial { background-color: #fff; }
.sc-icon-trial {
    background-image: none;
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 5h2v6h-2V7zm0 8h2v2h-2v-2z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 5h2v6h-2V7zm0 8h2v2h-2v-2z'/%3E%3C/svg%3E");
}
.sc-icon-chat {
    background-color: var(--primary);
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M20 2H4c-1.1 0-2 .9-2 2v18l4-4h14c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm-2 12H6v-2h12v2zm0-3H6V9h12v2zm0-3H6V6h12v2z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M20 2H4c-1.1 0-2 .9-2 2v18l4-4h14c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm-2 12H6v-2h12v2zm0-3H6V9h12v2zm0-3H6V6h12v2z'/%3E%3C/svg%3E");
}
.sc-icon-phone {
    background-color: var(--primary);
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M20 15.5c-1.25 0-2.45-.2-3.57-.57-.35-.11-.74-.03-1.02.24l-2.2 2.2c-2.83-1.44-5.15-3.75-6.59-6.58l2.2-2.21c.28-.27.36-.66.25-1.01A11.36 11.36 0 0 1 8.5 4c0-.55-.45-1-1-1H4c-.55 0-1 .45-1 1 0 9.39 7.61 17 17 17 .55 0 1-.45 1-1v-3.5c0-.55-.45-1-1-1z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M20 15.5c-1.25 0-2.45-.2-3.57-.57-.35-.11-.74-.03-1.02.24l-2.2 2.2c-2.83-1.44-5.15-3.75-6.59-6.58l2.2-2.21c.28-.27.36-.66.25-1.01A11.36 11.36 0 0 1 8.5 4c0-.55-.45-1-1-1H4c-.55 0-1 .45-1 1 0 9.39 7.61 17 17 17 .55 0 1-.45 1-1v-3.5c0-.55-.45-1-1-1z'/%3E%3C/svg%3E");
}
.sc-icon-wechat {
    background-color: var(--primary);
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M8.5 13.5c-.83 0-1.5-.67-1.5-1.5s.67-1.5 1.5-1.5 1.5.67 1.5 1.5-.67 1.5-1.5 1.5zm7 0c-.83 0-1.5-.67-1.5-1.5s.67-1.5 1.5-1.5 1.5.67 1.5 1.5-.67 1.5-1.5 1.5zm3.5-7H5c-1.1 0-2 .9-2 2v9c0 1.1.9 2 2 2h2l1.5 2 1.5-2h9c1.1 0 2-.9 2-2v-9c0-1.1-.9-2-2-2z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M8.5 13.5c-.83 0-1.5-.67-1.5-1.5s.67-1.5 1.5-1.5 1.5.67 1.5 1.5-.67 1.5-1.5 1.5zm7 0c-.83 0-1.5-.67-1.5-1.5s.67-1.5 1.5-1.5 1.5.67 1.5 1.5-.67 1.5-1.5 1.5zm3.5-7H5c-1.1 0-2 .9-2 2v9c0 1.1.9 2 2 2h2l1.5 2 1.5-2h9c1.1 0 2-.9 2-2v-9c0-1.1-.9-2-2-2z'/%3E%3C/svg%3E");
}
.sc-icon-top {
    background-color: var(--primary);
    -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M4 12l1.41 1.41L11 7.83V20h2V7.83l5.58 5.59L20 12l-8-8-8 8z'/%3E%3C/svg%3E");
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='black'%3E%3Cpath d='M4 12l1.41 1.41L11 7.83V20h2V7.83l5.58 5.59L20 12l-8-8-8 8z'/%3E%3C/svg%3E");
}

.sc-text {
    text-align: center;
    line-height: 1.1;
    color: var(--text-2);
}
.sc-text-main {
    font-size: 12px;
    font-weight: 700;
}
.sc-text-sub {
    font-size: 11px;
    color: var(--text-3);
    margin-top: 1px;
}
.sc-trial .sc-text-sub { color: rgba(255,255,255,0.85); }

.sc-popup {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    padding: 20px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 1001;
    pointer-events: auto;
}
.sc-popup::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-right: 1px solid var(--border);
    border-top: 1px solid var(--border);
}
.sc-popup-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 8px;
}
.sc-popup-desc {
    font-size: 13px;
    color: var(--text-3);
    line-height: 1.6;
    margin-bottom: 12px;
}
.sc-popup-btn {
    display: inline-block;
    padding: 8px 18px;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.2s ease;
}
.sc-popup-btn:hover {
    background: var(--primary-dark);
}
.sc-popup-phone {
    font-size: 14px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 12px;
}
.sc-popup-big-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
    margin-bottom: 8px;
    font-family: 'DIN Alternate', 'Helvetica Neue', Arial, sans-serif;
}
.sc-popup-qr {
    min-width: 200px;
    text-align: center;
}
.sc-popup-qr img {
    width: 140px;
    height: 140px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px;
    background: #fff;
    margin-bottom: 10px;
}

/* 让按钮直接可点击（无popup时） */
#scTop {
    cursor: pointer;
}
#scTop:hover {
    background: var(--primary);
    color: #fff;
}

/* ============================================
   CTA Banner
   ============================================ */
.cta-banner {
    background: var(--gradient-primary);
    color: #fff;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,255,255,0.1) 0%, transparent 50%);
}
.cta-content {
    position: relative;
}
.cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 2px;
}
.cta-content p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 32px;
}

/* ============================================
   联系我们（最后一页 - 深色保留）
   ============================================ */
.contact {
    background: linear-gradient(180deg, #2d1010 0%, #1a1a1a 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.contact::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230, 0, 18, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.contact .container { position: relative; z-index: 1; }
.contact .section-tag { color: rgba(255,255,255,0.85); }
.contact .section-title { color: #fff; }
.contact .section-title .accent { color: #fff; }
.contact .section-desc { color: rgba(255,255,255,0.75); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    align-items: start;
}
.contact-info {
    background: rgba(255,255,255,0.05);
    color: #fff;
    padding: 28px 28px;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.10);
    backdrop-filter: blur(10px);
}
.contact-info::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(230, 0, 18, 0.20) 0%, transparent 70%);
    border-radius: 50%;
}
.info-block {
    margin-bottom: 18px;
    position: relative;
}
.info-label {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 2px;
    margin-bottom: 4px;
    text-transform: uppercase;
}
.info-value {
    font-size: 16px;
    color: #fff;
    font-weight: 600;
    line-height: 1.45;
}
.info-value a {
    color: var(--primary-light);
    transition: var(--transition);
}
.info-value a:hover { color: #fff; }
.info-sub {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    margin-top: 2px;
    font-style: italic;
}
.info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
    padding-top: 18px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.info-tag {
    padding: 6px 12px;
    background: rgba(230, 0, 18, 0.20);
    border: 1px solid rgba(230, 0, 18, 0.40);
    border-radius: 16px;
    font-size: 12px;
    color: rgba(255,255,255,0.9);
}

.contact-form-wrap {
    background: #fff;
    padding: 28px 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.contact-form h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 12px;
}
.form-group {
    margin-bottom: 12px;
}
.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-2);
    margin-bottom: 4px;
    font-weight: 500;
}
.form-group label span {
    color: #ef4444;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: var(--bg-soft);
    transition: all var(--transition);
    color: var(--text-1);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(230, 0, 18, 0.10);
}
.form-group textarea { resize: vertical; }
.form-submit {
    width: 100%;
    margin-top: 8px;
    padding: 14px;
    font-size: 15px;
}
.form-tip {
    text-align: center;
    font-size: 12px;
    color: var(--text-3);
    margin-top: 8px;
}

.form-consent {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 12px;
    color: var(--text-3);
    margin-bottom: 8px;
    cursor: pointer;
    line-height: 1.6;
    user-select: none;
}
.form-consent input[type="checkbox"] {
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--primary);
    width: 14px;
    height: 14px;
}
.form-consent a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.form-consent a:hover {
    color: var(--primary-dark);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: #1a1a1a;
    color: rgba(255,255,255,0.7);
    padding: 64px 0 24px;
    border-top: 1px solid rgba(230,0,18,0.15);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 48px;
}
.footer-brand {
    max-width: 320px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.footer-logo .logo-img {
    width: 220px;
    height: 62px;
}
.footer-desc {
    font-size: 13px;
    line-height: 1.7;
    margin-bottom: 20px;
}
.footer-partner {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(230,0,18,0.2);
    border: 1px solid rgba(230,0,18,0.4);
    border-radius: 6px;
    font-size: 12px;
    color: var(--primary-light);
}
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
}
.footer-col a {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 10px;
    transition: var(--transition);
}
.footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: rgba(255,255,255,0.4);
    flex-wrap: wrap;
    gap: 12px;
}

/* ============================================
   Lightbox
   ============================================ */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0,0,0,0.9);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 40px;
    opacity: 0;
    transition: opacity var(--transition);
}
.lightbox.active { display: flex; opacity: 1; }
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    border-radius: 50%;
    transition: var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,0.1); }
.lightbox-content {
    max-width: 90vw;
    max-height: 90vh;
    text-align: center;
}
.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.lightbox-caption {
    color: #fff;
    margin-top: 16px;
    font-size: 16px;
}

/* ============================================
   回到顶部
   ============================================ */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 50%;
    font-size: 20px;
    box-shadow: 0 8px 24px rgba(230,0,18,0.3);
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 50;
}
.back-top.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.back-top:hover { transform: translateY(-3px); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
    .hero-title { font-size: 48px; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { height: 540px; max-width: 540px; margin: 0 auto; }
    .visual-center-orbit { width: 170px; height: 170px; }
    .visual-card { transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-215px); }
    .visual-card-inner { width: 190px; padding: 16px 14px; }
    .vc-icon { width: 40px; height: 40px; }
    .product-matrix, .case-grid, .cert-grid, .cert-badges { grid-template-columns: repeat(2, 1fr); }
    .qrcode-grid { grid-template-columns: repeat(3, 1fr); }
    .sol-grid { grid-template-columns: repeat(3, 1fr); }
    .adv-grid { grid-template-columns: repeat(2, 1fr); }
    .service-system { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .deliv-grid { grid-template-columns: repeat(2, 1fr); }
    .impl-process { flex-direction: column; gap: 16px; }
    .impl-line { display: none; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .nav-menu { display: none; }
    .menu-toggle { display: flex; }
    .nav-menu.open {
        display: flex;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 26, 0.98);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 8px 32px rgba(0, 212, 255, 0.10);
        border-top: 1px solid rgba(0, 212, 255, 0.15);
    }
    .nav-menu.open a { width: 100%; padding: 12px; }
    .nav-menu.open .nav-link.active::after { display: none; }
    .nav-actions .btn-primary-sm { display: none; }
    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero-title { font-size: 36px; }
    .hero-subtitle { font-size: 16px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-num { font-size: 32px; }
    .hero-visual { height: auto; padding: 20px 0; flex-wrap: wrap; justify-content: center; }
    .visual-center { position: relative; top: auto; left: auto; transform: none; width: 130px; height: 130px; margin-bottom: 20px; }
    .visual-center-title { font-size: 22px; }
    .visual-center-orbit { width: 160px; height: 160px; }
    .visual-card { position: relative; top: auto; left: auto; transform: none !important; display: inline-block; margin: 6px; }
    .visual-card-inner { animation: none; transform: none !important; width: 180px; padding: 14px 14px; }
    .vc-icon { width: 38px; height: 38px; }
    .section { padding: 60px 0; }
    .section-title { font-size: 32px; }
    .product-matrix, .case-grid, .cert-grid, .cert-badges, .adv-grid, .deliv-grid, .sol-grid, .form-row, .footer-grid { 
        grid-template-columns: 1fr; 
    }
    .qrcode-grid { grid-template-columns: 1fr; max-width: 360px; }
    .qrcode-img-wrap { width: 150px; height: 150px; }
    .org-grid { grid-template-columns: 1fr; }
    .cta-content h2 { font-size: 28px; }
    .city-list { gap: 8px; }
    .city-item { padding: 8px 14px; font-size: 12px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* ============================================
   滚动动画
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1);
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}
/* stagger: children of grids fade in with slight delay */
.adv-grid .fade-in:nth-child(1),
.product-matrix .fade-in:nth-child(1),
.case-grid .fade-in:nth-child(1),
.deliv-grid .fade-in:nth-child(1),
.cert-badges .fade-in:nth-child(1),
.sol-grid .fade-in:nth-child(1) { transition-delay: 0s; }
.adv-grid .fade-in:nth-child(2),
.product-matrix .fade-in:nth-child(2),
.case-grid .fade-in:nth-child(2),
.deliv-grid .fade-in:nth-child(2),
.cert-badges .fade-in:nth-child(2),
.sol-grid .fade-in:nth-child(2) { transition-delay: 0.08s; }
.adv-grid .fade-in:nth-child(3),
.product-matrix .fade-in:nth-child(3),
.case-grid .fade-in:nth-child(3),
.deliv-grid .fade-in:nth-child(3),
.cert-badges .fade-in:nth-child(3),
.sol-grid .fade-in:nth-child(3) { transition-delay: 0.16s; }
.adv-grid .fade-in:nth-child(4),
.product-matrix .fade-in:nth-child(4),
.case-grid .fade-in:nth-child(4),
.deliv-grid .fade-in:nth-child(4),
.cert-badges .fade-in:nth-child(4),
.sol-grid .fade-in:nth-child(4) { transition-delay: 0.24s; }
.adv-grid .fade-in:nth-child(5),
.case-grid .fade-in:nth-child(5),
.sol-grid .fade-in:nth-child(5) { transition-delay: 0.32s; }
.adv-grid .fade-in:nth-child(6),
.case-grid .fade-in:nth-child(6),
.sol-grid .fade-in:nth-child(6) { transition-delay: 0.40s; }
.case-grid .fade-in:nth-child(7),
.sol-grid .fade-in:nth-child(7) { transition-delay: 0.48s; }
.case-grid .fade-in:nth-child(8),
.sol-grid .fade-in:nth-child(8) { transition-delay: 0.56s; }
.sol-grid .fade-in:nth-child(9) { transition-delay: 0.64s; }
.sol-grid .fade-in:nth-child(10) { transition-delay: 0.72s; }

/* ============================================
   页签切换模式
   ============================================ */
/* JS 启用后：默认隐藏所有 data-page section，仅显示 page-visible */
.js section[data-page] { display: none; }
.js section[data-page].page-visible {
    display: block;
    animation: page-enter 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes page-enter {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 页签模式下导航栏始终带阴影和边框 */
.js .navbar { border-bottom-color: rgba(0, 212, 255, 0.12); box-shadow: 0 4px 24px rgba(0, 212, 255, 0.06); }

/* 第二个手机号在浮动面板中的间距 */
.sc-popup-big-num + .sc-popup-big-num {
    margin-top: 4px;
}
/* 关注心达区域第二个号码间距 */
.follow-phone-num + .follow-phone-num {
    margin-top: 4px;
}

/* ============================================
   深色科技风全面增强
   ============================================ */

/* --- 全局背景：深色科技底色 --- */
body {
    background: var(--tech-dark);
    color: #e2e8f0;
}

/* --- Section 背景交替深色 --- */
.section { background: var(--tech-dark) !important; color: #e2e8f0; }
.about { background: var(--tech-dark-2) !important; }
.advantages { background: var(--tech-dark) !important; }
.advantages::before {
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%) !important;
}
.products { background: var(--tech-dark-2) !important; }
.implementation { background: var(--tech-dark) !important; }
.implementation::before { display: none; }
.service { background: var(--tech-dark-2) !important; }
.service::before {
    background: radial-gradient(circle, rgba(230, 0, 18, 0.08) 0%, transparent 70%) !important;
}
.honor { background: var(--tech-dark) !important; }
.cases { background: var(--tech-dark-2) !important; }
.follow { background: var(--tech-dark) !important; }

/* --- 全局文字颜色适配深色 --- */
.section-title { color: #fff !important; }
.section-desc { color: rgba(255,255,255,0.6) !important; }
.section-head.light .section-title { color: #fff !important; }
.section-head.light .section-desc { color: rgba(255,255,255,0.6) !important; }
.accent { color: var(--tech-cyan) !important; }

/* --- 关于心达 --- */
.about-intro h3 { color: #fff !important; }
.about-intro p { color: rgba(255,255,255,0.7) !important; }
.about-intro strong { color: var(--tech-cyan) !important; }
.about-org {
    background: rgba(255,255,255,0.03) !important;
    border-color: rgba(0, 212, 255, 0.15) !important;
    backdrop-filter: blur(10px);
}
.org-title { color: #fff !important; border-bottom-color: var(--tech-cyan) !important; }
.org-card {
    background: rgba(255,255,255,0.04) !important;
    border-color: rgba(255,255,255,0.08) !important;
}
.org-card:hover {
    border-color: var(--tech-cyan) !important;
    box-shadow: 0 8px 28px rgba(0, 212, 255, 0.12) !important;
    background: rgba(0, 212, 255, 0.05) !important;
}
.org-num { color: var(--tech-cyan) !important; }
.org-name { color: #fff !important; }
.org-desc { color: rgba(255,255,255,0.55) !important; }
.city-coverage {
    background: rgba(0, 212, 255, 0.04) !important;
    border: 1px solid rgba(0, 212, 255, 0.12) !important;
}
.coverage-title { color: #fff !important; }
.city-item {
    background: rgba(255,255,255,0.05) !important;
    color: rgba(255,255,255,0.8) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2) !important;
}
.city-item.ext { background: var(--gradient-primary) !important; color: #fff !important; }
.city-dot { background: var(--tech-cyan) !important; }

/* --- 核心优势 --- */
.adv-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
}
.adv-card:hover {
    border-color: rgba(0, 212, 255, 0.35) !important;
    transform: translateY(-5px);
    box-shadow: 0 14px 40px rgba(0, 212, 255, 0.12) !important;
    background: rgba(0, 212, 255, 0.04) !important;
}
.adv-num { color: var(--tech-cyan) !important; }
.adv-card h3 { color: #fff !important; }
.adv-card p { color: rgba(255,255,255,0.6) !important; }

/* --- 产品与方案 --- */
.hub-video-intro {
    background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(0, 212, 255, 0.03) 100%) !important;
    border: 1px solid rgba(0, 212, 255, 0.15) !important;
    box-shadow: 0 4px 24px rgba(0,0,0,0.2) !important;
}
.hub-video-copy h3 { color: #fff !important; }
.hub-video-copy h3 span { color: var(--tech-cyan) !important; }
.hub-video-copy p { color: rgba(255,255,255,0.65) !important; }
.hub-video-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25) !important;
}
.hub-video-meta h3 { color: #fff !important; }
.hub-video-meta p { color: rgba(255,255,255,0.6) !important; }
.hub-function-intro h3 { color: #fff !important; }
.hub-function-intro p { color: rgba(255,255,255,0.6) !important; }
.hub-function-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
}
.hub-function-card:hover {
    box-shadow: 0 8px 28px rgba(0, 212, 255, 0.12) !important;
    border-color: rgba(0, 212, 255, 0.25) !important;
}
.hub-function-card h4 { color: #fff !important; }
.hub-function-card p { color: rgba(255,255,255,0.6) !important; }

.pm-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    backdrop-filter: blur(10px);
}
.pm-card:hover {
    box-shadow: 0 14px 40px rgba(0, 212, 255, 0.12) !important;
    border-color: rgba(0, 212, 255, 0.30) !important;
}
.pm-card h3 { color: var(--tech-cyan) !important; }
.pm-sub { color: rgba(255,255,255,0.5) !important; border-bottom-color: rgba(255,255,255,0.10) !important; }
.pm-features li { color: rgba(255,255,255,0.7) !important; }
.pm-features li::before { color: var(--tech-cyan) !important; }
.pm-tags span { background: rgba(0, 212, 255, 0.10) !important; color: var(--tech-cyan) !important; }

.solutions {
    background: rgba(255,255,255,0.02) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
}
.sol-title { color: #fff !important; }
.sol-subtitle { color: rgba(255,255,255,0.5) !important; }
.sol-item:hover {
    background: rgba(0, 212, 255, 0.06) !important;
    border-color: rgba(0, 212, 255, 0.20) !important;
}
.sol-icon {
    background: rgba(255,255,255,0.04) !important;
    border: 1.5px solid rgba(0, 212, 255, 0.30) !important;
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.08) !important;
    color: var(--tech-cyan) !important;
}
.sol-item:hover .sol-icon {
    box-shadow: 0 6px 18px rgba(0, 212, 255, 0.18) !important;
}
.sol-item.active .sol-icon {
    background: linear-gradient(135deg, var(--tech-cyan), var(--tech-blue)) !important;
    color: #fff !important;
    border-color: var(--tech-cyan) !important;
    box-shadow: 0 8px 22px rgba(0, 212, 255, 0.28) !important;
}
.sol-item.active .sol-name { color: var(--tech-cyan) !important; }
.sol-name { color: rgba(255,255,255,0.85) !important; }

/* --- 实施体系 --- */
.impl-process {
    background: rgba(255,255,255,0.02) !important;
}
.impl-step {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2) !important;
}
.impl-num { color: var(--tech-cyan) !important; }
.impl-title { color: #fff !important; }
.impl-desc { color: rgba(255,255,255,0.55) !important; }
.impl-arrow { color: var(--tech-cyan) !important; }
.impl-deliverables {
    background: rgba(255,255,255,0.02) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
}
.impl-deliv-title { color: #fff !important; }
.impl-deliv-item {
    background: rgba(0, 212, 255, 0.04) !important;
    border-left-color: var(--tech-cyan) !important;
}
.impl-deliv-num {
    color: var(--tech-cyan) !important;
    background: rgba(0, 212, 255, 0.12) !important;
}
.impl-deliv-text { color: rgba(255,255,255,0.75) !important; }

.deliverables {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.04) 0%, rgba(230, 0, 18, 0.03) 100%) !important;
    border: 1px solid rgba(0, 212, 255, 0.12) !important;
}
.deliv-title { color: #fff !important; }
.deliv-item {
    background: rgba(255,255,255,0.03) !important;
    border-left-color: var(--tech-cyan) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15) !important;
}
.deliv-num { background: var(--tech-cyan) !important; color: var(--tech-dark) !important; }
.deliv-text { color: #fff !important; }
.deliv-tag { color: var(--tech-cyan) !important; }

/* --- 服务体系 --- */
.ss-tier {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
}
.ss-tier:hover {
    border-color: rgba(0, 212, 255, 0.30) !important;
    box-shadow: 0 14px 36px rgba(0, 212, 255, 0.10) !important;
}
.ss-tier.tier-premium {
    background: linear-gradient(135deg, rgba(230, 0, 18, 0.08) 0%, rgba(0, 212, 255, 0.05) 100%) !important;
    border-color: rgba(230, 0, 18, 0.25) !important;
}
.tier-name { color: #fff !important; border-bottom-color: var(--tech-cyan) !important; }
.tier-name.tier-free { color: rgba(255,255,255,0.6) !important; }
.tier-name.tier-train { color: var(--tech-cyan) !important; }
.ss-tier.tier-premium .tier-name { color: var(--primary-light) !important; }
.tier-label { color: rgba(255,255,255,0.5) !important; }
.tier-value { color: #fff !important; }
.tier-item { border-bottom-color: rgba(255,255,255,0.08) !important; }
.csm-loop {
    background: rgba(255,255,255,0.02) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 12px rgba(0,0,0,0.2) !important;
}
.loop-title { color: #fff !important; }
.loop-item {
    background: rgba(0, 212, 255, 0.08) !important;
    border: 1px solid rgba(0, 212, 255, 0.20) !important;
    color: var(--tech-cyan) !important;
}
.loop-arrow { color: var(--tech-cyan) !important; }

/* --- 资质荣誉 --- */
.cert-badge {
    background: rgba(255,255,255,0.03) !important;
    border: 2px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2) !important;
}
.cert-badge:hover { box-shadow: 0 8px 24px rgba(0, 212, 255, 0.12) !important; }
.cert-badge.platinum { border-color: rgba(139, 92, 246, 0.4) !important; }
.cert-badge.gold { border-color: rgba(245, 158, 11, 0.4) !important; }
.cert-badge.diamond { border-color: rgba(0, 212, 255, 0.4) !important; }
.cb-name { color: #fff !important; }
.cb-desc { color: rgba(255,255,255,0.55) !important; }
.cs-title { color: #fff !important; border-left-color: var(--tech-cyan) !important; }
.cert-img {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2) !important;
}
.cert-img:hover {
    box-shadow: 0 10px 36px rgba(0, 212, 255, 0.15) !important;
    border-color: rgba(0, 212, 255, 0.30) !important;
}
.award-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2) !important;
}
.award-card:hover {
    box-shadow: 0 10px 36px rgba(0, 212, 255, 0.15) !important;
    border-color: rgba(0, 212, 255, 0.30) !important;
}
.award-name { color: #fff !important; }
.award-org { color: rgba(255,255,255,0.5) !important; }
.scroll-hint { color: rgba(255,255,255,0.35) !important; }

/* --- 客户案例 --- */
.case-image-placeholder {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25) !important;
}
.case-image-placeholder p { color: rgba(255,255,255,0.6) !important; }
.case-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    backdrop-filter: blur(10px);
}
.case-card:hover {
    box-shadow: 0 14px 40px rgba(0, 212, 255, 0.12) !important;
    border-color: rgba(0, 212, 255, 0.30) !important;
}
.case-tag {
    background: rgba(0, 212, 255, 0.10) !important;
    color: var(--tech-cyan) !important;
}
.case-name { color: #fff !important; }
.case-desc { color: rgba(255,255,255,0.6) !important; }
.case-cta {
    background: rgba(0, 212, 255, 0.04) !important;
    border: 1px dashed rgba(0, 212, 255, 0.20) !important;
}
.case-cta p { color: rgba(255,255,255,0.7) !important; }

/* --- 关注心达 --- */
.qrcode-card {
    background: rgba(255,255,255,0.03) !important;
    border: 1px solid rgba(255,255,255,0.08) !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2) !important;
}
.qrcode-card:hover {
    border-color: rgba(0, 212, 255, 0.30) !important;
    box-shadow: 0 18px 40px rgba(0, 212, 255, 0.12) !important;
}
.qrcode-img-wrap {
    background: #fff !important;
    border: 1px solid rgba(255,255,255,0.10) !important;
}
.qrcode-platform { color: #fff !important; }
.qrcode-desc { color: rgba(255,255,255,0.55) !important; }
.social-icons-label { color: rgba(255,255,255,0.7) !important; }
.follow-phone-label { color: rgba(255,255,255,0.5) !important; }
.follow-phone-num { color: var(--tech-cyan) !important; }
.follow-phone-sub { color: rgba(255,255,255,0.4) !important; }
.follow-phone { border-left-color: rgba(0, 212, 255, 0.15) !important; }

/* --- CTA Banner 增强 --- */
.cta-banner {
    background: linear-gradient(135deg, #0a0e1a 0%, #1a1228 40%, #2d1010 70%, #E60012 100%) !important;
    position: relative;
}
.cta-banner::before {
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(230, 0, 18, 0.20) 0%, transparent 50%) !important;
}
.cta-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

/* --- 联系表单深色化 --- */
.contact-form-wrap {
    background: rgba(255,255,255,0.04) !important;
    border: 1px solid rgba(0, 212, 255, 0.15) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3) !important;
}
.contact-form h3 { color: #fff !important; border-bottom-color: var(--tech-cyan) !important; }
.form-group label { color: rgba(255,255,255,0.7) !important; }
.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(255,255,255,0.05) !important;
    border-color: rgba(255,255,255,0.12) !important;
    color: #fff !important;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.35) !important; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--tech-cyan) !important;
    background: rgba(0, 212, 255, 0.05) !important;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.12) !important;
}
.form-tip { color: rgba(255,255,255,0.45) !important; }
.form-consent { color: rgba(255,255,255,0.55) !important; }
.form-consent a { color: var(--tech-cyan) !important; }

/* --- 按钮科技感增强 --- */
.btn-primary {
    background: linear-gradient(135deg, #E60012 0%, #FF1A2E 100%) !important;
    box-shadow: 0 4px 14px rgba(230,0,18,0.25), 0 0 20px rgba(230,0,18,0.15) !important;
}
.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(230,0,18,0.4), 0 0 30px rgba(230,0,18,0.25) !important;
}
.btn-ghost {
    color: var(--tech-cyan) !important;
    border-color: var(--tech-cyan) !important;
}
.btn-ghost:hover {
    background: var(--tech-cyan) !important;
    color: var(--tech-dark) !important;
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.25) !important;
}
.btn-primary-sm {
    background: linear-gradient(135deg, var(--tech-cyan) 0%, var(--tech-blue) 100%) !important;
    box-shadow: 0 4px 14px rgba(0, 212, 255, 0.25) !important;
}
.btn-primary-sm:hover {
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4) !important;
}
.follow-trial-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%) !important;
    box-shadow: 0 8px 24px rgba(230, 0, 18, 0.28), 0 0 30px rgba(230, 0, 18, 0.15) !important;
}
.follow-trial-btn:hover {
    box-shadow: 0 14px 32px rgba(230, 0, 18, 0.36), 0 0 40px rgba(230, 0, 18, 0.25) !important;
}

/* --- 右侧浮动面板深色化 --- */
.sc-item {
    background: rgba(10, 14, 26, 0.9) !important;
    border: 1px solid rgba(0, 212, 255, 0.12) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3) !important;
    backdrop-filter: blur(10px);
}
.sc-item:hover {
    background: rgba(0, 212, 255, 0.15) !important;
    border-color: var(--tech-cyan) !important;
}
.sc-text { color: rgba(255,255,255,0.7) !important; }
.sc-text-sub { color: rgba(255,255,255,0.45) !important; }
.sc-popup {
    background: rgba(10, 14, 26, 0.98) !important;
    border: 1px solid rgba(0, 212, 255, 0.15) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4) !important;
}
.sc-popup::after { background: rgba(10, 14, 26, 0.98) !important; border-right-color: rgba(0, 212, 255, 0.15) !important; border-top-color: rgba(0, 212, 255, 0.15) !important; }
.sc-popup-title { color: #fff !important; }
.sc-popup-desc { color: rgba(255,255,255,0.55) !important; }
.sc-popup-phone { color: var(--tech-cyan) !important; }
.sc-popup-big-num { color: var(--tech-cyan) !important; }
#scTop:hover { background: var(--tech-cyan) !important; }

/* --- Footer 增强 --- */
.footer {
    background: #060810 !important;
    border-top: 1px solid rgba(0, 212, 255, 0.10) !important;
}
.footer-col a:hover { color: var(--tech-cyan) !important; }
.footer-bottom { border-top-color: rgba(0, 212, 255, 0.08) !important; }

/* --- 回到顶部按钮 --- */
.back-top {
    background: linear-gradient(135deg, var(--tech-cyan), var(--tech-blue)) !important;
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.25) !important;
}
.back-top:hover { box-shadow: 0 12px 32px rgba(0, 212, 255, 0.35) !important; }

/* --- 全局滚动条科技风 --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--tech-dark); }
::-webkit-scrollbar-thumb { background: rgba(0, 212, 255, 0.2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 212, 255, 0.35); }

/* --- 全局文字选中颜色 --- */
::selection { background: rgba(0, 212, 255, 0.25); color: #fff; }

/* --- 卡片悬浮科技感光效 --- */
.adv-card::before,
.pm-card::after,
.case-card::after,
.ss-tier::before,
.qrcode-card::before,
.cert-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.06), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
    z-index: 1;
}
.adv-card:hover::before,
.pm-card:hover::after,
.case-card:hover::after,
.ss-tier:hover::before,
.qrcode-card:hover::before,
.cert-badge:hover::before {
    left: 100%;
}

/* --- 角落科技装饰 --- */
.adv-card,
.pm-card,
.ss-tier,
.qrcode-card {
    position: relative;
}
.adv-card::after,
.ss-tier::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 12px;
    height: 12px;
    border-top: 1.5px solid rgba(0, 212, 255, 0.25);
    border-right: 1.5px solid rgba(0, 212, 255, 0.25);
    border-radius: 0 4px 0 0;
    transition: border-color 0.3s ease;
    pointer-events: none;
}
.adv-card:hover::after,
.ss-tier:hover::after {
    border-color: var(--tech-cyan);
}

/* --- Section 科技分割线 --- */
.section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
}

/* --- 数据流粒子动画 --- */
.hero-grid::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--tech-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--tech-cyan);
    top: 30%;
    left: 0;
    animation: data-flow 8s linear infinite;
}
@keyframes data-flow {
    0% { top: 20%; left: 5%; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 80%; left: 95%; opacity: 0; }
}

/* --- 中心圆科技感增强 --- */
.visual-center-orbit {
    border-color: rgba(0, 212, 255, 0.30) !important;
}
.visual-card-inner {
    background: rgba(10, 14, 26, 0.9) !important;
    border: 1px solid rgba(0, 212, 255, 0.15) !important;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3) !important;
    backdrop-filter: blur(10px);
}
.visual-card-inner:hover {
    background: rgba(0, 212, 255, 0.08) !important;
    border-color: var(--tech-cyan) !important;
    box-shadow: 0 18px 44px rgba(0, 212, 255, 0.15) !important;
}
.vc-name { color: #fff !important; }
.vc-desc { color: rgba(255,255,255,0.55) !important; }

/* --- 隐私政策链接适配深色 --- */
.contact-form-wrap a[href*="privacy"] { color: var(--tech-cyan) !important; }