/* ============================================
   深圳市卧龙达科技有限公司 - 企业网站样式 v2
   增强科技风格：霓虹光效、扫描线、粒子感、赛博边框
   ============================================ */

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

:root {
    /* 颜色系统 - 深空科技风 */
    --bg-primary: #050a1a;
    --bg-secondary: #070f24;
    --bg-card: #0c1633;
    --bg-card-hover: #101d40;
    --accent-primary: #00d4ff;
    --accent-secondary: #7c5cff;
    --accent-cyan: #06d6d6;
    --accent-green: #39ff14;
    --text-primary: #e8ecf4;
    --text-secondary: #8899b0;
    --text-tertiary: #556680;
    --border-color: rgba(0, 212, 255, 0.08);
    --border-hover: rgba(0, 212, 255, 0.35);
    --gradient-primary: linear-gradient(135deg, #00d4ff, #7c5cff);
    --gradient-text: linear-gradient(135deg, #00e5ff, #a78bfa, #00d4ff);
    --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(124, 92, 255, 0.1));
    --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.2), 0 0 60px rgba(0, 212, 255, 0.08);
    --shadow-glow-purple: 0 0 30px rgba(124, 92, 255, 0.2), 0 0 60px rgba(124, 92, 255, 0.08);
    --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255,255,255,0.03);
    --shadow-card-hover: 0 20px 60px rgba(0, 212, 255, 0.12), 0 0 40px rgba(124, 92, 255, 0.08);

    /* 间距 */
    --section-padding: 120px 0;
    --container-max: 1200px;
    --radius: 20px;
    --radius-sm: 10px;

    /* 过渡 */
    --transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
        "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.85;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    /* 全局扫描线效果 */
    position: relative;
}

body::after {
    content: "";
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 212, 255, 0.01) 2px,
        rgba(0, 212, 255, 0.01) 4px
    );
    opacity: 0.6;
}

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

ul { list-style: none; }

img {
    max-width: 100%;
    display: block;
}

/* ===== Logo 样式 ===== */
.logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: brightness(1.05) contrast(1.05);
    transition: var(--transition);
}

.nav-logo:hover .logo-img {
    filter: brightness(1.2) drop-shadow(0 0 12px rgba(0, 212, 255, 0.4));
}

.footer-logo {
    height: 36px;
}

/* ===== 通用容器 ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(5, 10, 26, 0.88);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 212, 255, 0.03);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.nav-logo:hover { transform: scale(1.02); }

.nav-menu {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    font-size: 14.5px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
    position: relative;
    transition: var(--transition);
    padding: 6px 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.35s ease;
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
    text-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

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

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* 科技网格背景 */
.hero-grid {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px),
        linear-gradient(rgba(124, 92, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 92, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px, 60px 60px, 300px 300px, 300px 300px;
    mask-image: radial-gradient(ellipse 75% 55% at 50% 38%, black 20%, transparent 72%);
    -webkit-mask-image: radial-gradient(ellipse 75% 55% at 50% 38%, black 20%, transparent 72%);
    animation: grid-pulse 8s ease-in-out infinite;
}

@keyframes grid-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* 光球 */
.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    animation: orb-float 14s ease-in-out infinite;
}

.orb-1 {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.28) 0%, transparent 70%);
    top: -120px; left: -150px;
    animation-delay: 0s;
}
.orb-2 {
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(124, 92, 255, 0.22) 0%, transparent 70%);
    bottom: -200px; right: -200px;
    animation-delay: -5s;
}
.orb-3 {
    width: 450px; height: 450px;
    background: radial-gradient(circle, rgba(6, 214, 214, 0.18) 0%, transparent 70%);
    top: 42%; left: 50%; transform: translate(-50%, -50%);
    animation-delay: -9s;
}

@keyframes orb-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -35px) scale(1.08); }
    66% { transform: translate(-30px, 25px) scale(0.93); }
}

/* 粒子装饰线 */
.hero-bg::before {
    content: "";
    position: absolute;
    top: 20%; left: 5%;
    width: 200px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0.3;
    animation: laser-sweep 6s ease-in-out infinite;
}

.hero-bg::after {
    content: "";
    position: absolute;
    bottom: 25%; right: 8%;
    width: 160px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
    opacity: 0.25;
    animation: laser-sweep 8s ease-in-out infinite reverse;
}

@keyframes laser-sweep {
    0% { opacity: 0.1; transform: scaleX(0.5); }
    50% { opacity: 0.4; transform: scaleX(1.2); }
    100% { opacity: 0.1; transform: scaleX(0.5); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

/* Hero 徽章 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 22px;
    background: rgba(0, 212, 255, 0.07);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    backdrop-filter: blur(12px);
    animation: fadeInDown 0.8s ease;
    font-family: "SF Mono", "Cascadia Code", "Fira Code", monospace;
    letter-spacing: 0.5px;
}

.pulse-dot {
    width: 8px; height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse-ring 2s ease-in-out infinite;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.6);
}

@keyframes pulse-ring {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.5); }
    50% { box-shadow: 0 0 0 10px rgba(0, 212, 255, 0); }
}

/* Hero 标题 - 霓虹文字效果 */
.hero-title {
    font-size: clamp(32px, 5vw, 58px);
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 22px;
    color: var(--text-primary);
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.15);
    animation: fadeInUp 0.8s ease 0.1s both;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: clamp(17px, 2.5vw, 26px);
    font-weight: 600;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease 0.2s both, gradient-shift 6s linear infinite;
    letter-spacing: 1px;
}

@keyframes gradient-shift {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

.hero-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 44px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

/* 按钮 */
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 68px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 15px 34px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 24px rgba(0, 212, 255, 0.3), 0 0 48px rgba(0, 212, 255, 0.08);
}

.btn-primary::before {
    content: "";
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.6s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 36px rgba(0, 212, 255, 0.45), 0 0 64px rgba(0, 212, 255, 0.15);
}

.btn-primary:hover::before { left: 100%; }

.btn-outline {
    background: rgba(0, 212, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid rgba(0, 212, 255, 0.2);
    backdrop-filter: blur(12px);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--border-hover);
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.1), inset 0 0 20px rgba(0, 212, 255, 0.05);
    transform: translateY(-3px);
}

/* 统计数据 */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    animation: fadeInUp 0.8s ease 0.5s both;
    position: relative;
}

.hero-stats::before {
    content: "";
    position: absolute;
    top: -16px; left: 50%;
    transform: translateX(-50%);
    width: 200px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 36px;
    position: relative;
}

.stat-num {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.stat-suffix {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.stat-label {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-top: 10px;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 46px;
    background: linear-gradient(180deg, transparent, rgba(0, 212, 255, 0.2), transparent);
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 32px; left: 50%;
    transform: translateX(-50%);
    width: 26px; height: 44px;
    border: 1.5px solid rgba(0, 212, 255, 0.25);
    border-radius: 13px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    opacity: 0.5;
}

.scroll-indicator span {
    width: 3px; height: 10px;
    background: var(--accent-primary);
    border-radius: 2px;
    animation: scroll-bounce 1.8s ease-in-out infinite;
    box-shadow: 0 0 8px rgba(0, 212, 255, 0.4);
}

@keyframes scroll-bounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(12px); opacity: 0.3; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(36px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Section 通用 ===== */
section {
    padding: var(--section-padding);
    position: relative;
}

section::before {
    content: "";
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 400px; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.12), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 100px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 18px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: "SF Mono", "Cascadia Code", monospace;
}

.section-tag::before {
    content: "// ";
    opacity: 0.4;
}

.section-title {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #e8ecf4 0%, #8899b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.9;
}

/* ===== 主营业务 ===== */
.business {
    background: var(--bg-secondary);
    position: relative;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

/* 赛博风卡片 */
.business-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 38px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* 卡片顶部发光条 */
.business-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 卡片角落装饰 */
.business-card::after {
    content: "";
    position: absolute;
    top: -1px; right: -1px;
    width: 60px; height: 60px;
    border-top: 2px solid rgba(0, 212, 255, 0);
    border-right: 2px solid rgba(0, 212, 255, 0);
    border-radius: 0 var(--radius) 0 0;
    transition: border-color 0.4s ease;
}

.business-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-hover);
}

.business-card:hover::before { transform: scaleX(1); }
.business-card:hover::after {
    border-top-color: var(--accent-primary);
    border-right-color: var(--accent-secondary);
}

.card-icon {
    margin-bottom: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px; height: 68px;
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.1);
    border-radius: 16px;
    transition: var(--transition);
    position: relative;
}

.card-icon::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: 16px;
    background: conic-gradient(from 0deg, transparent, var(--accent-primary), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.business-card:hover .card-icon {
    background: rgba(0, 212, 255, 0.1);
    transform: scale(1.06);
    border-color: rgba(0, 212, 255, 0.25);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.business-card:hover .card-icon::before { opacity: 0.15; }

.card-title {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 22px;
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13.5px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.card-features li::before {
    content: "";
    width: 5px; height: 5px;
    background: var(--accent-primary);
    border-radius: 1px;
    flex-shrink: 0;
    transform: rotate(45deg);
    transition: var(--transition);
}

.business-card:hover .card-features li { color: var(--text-primary); }
.business-card:hover .card-features li::before {
    box-shadow: 0 0 10px var(--accent-primary);
    background: var(--accent-primary);
}

/* ===== 客户案例 ===== */
.cases {
    background: var(--bg-primary);
    position: relative;
}

.case-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 110px;
}
.case-item:last-child { margin-bottom: 0; }

.case-reverse .case-visual { order: 2; }
.case-reverse .case-info { order: 1; }

.case-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.case-visual-inner {
    width: 100%;
    max-width: 480px;
    border-radius: 24px;
    padding: 44px;
    position: relative;
    overflow: hidden;
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 背景网格装饰 */
.case-visual-inner::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
}

.case-visual-1 {
    background: linear-gradient(145deg, rgba(0, 212, 255, 0.06), rgba(124, 92, 255, 0.04));
    border: 1px solid rgba(0, 212, 255, 0.12);
}
.case-visual-2 {
    background: linear-gradient(145deg, rgba(124, 92, 255, 0.06), rgba(6, 214, 214, 0.04));
    border: 1px solid rgba(124, 92, 255, 0.12);
}
.case-visual-3 {
    background: linear-gradient(145deg, rgba(6, 214, 214, 0.06), rgba(0, 212, 255, 0.04));
    border: 1px solid rgba(6, 214, 214, 0.12);
}

/* --- Mockup: ERP --- */
.visual-mockup {
    width: 100%;
    background: var(--bg-card);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 212, 255, 0.08);
    position: relative;
    z-index: 1;
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid rgba(0, 212, 255, 0.06);
}
.mockup-dot { width: 10px; height: 10px; border-radius: 50%; }
.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green { background: #28c840; }
.mockup-title {
    margin-left: 12px;
    font-size: 12px;
    color: var(--text-tertiary);
    font-family: "SF Mono", "Cascadia Code", monospace;
}

.mockup-body {
    display: flex;
    min-height: 250px;
}

.mockup-sidebar {
    width: 100px;
    padding: 14px 10px;
    background: rgba(0, 0, 0, 0.25);
    border-right: 1px solid rgba(0, 212, 255, 0.05);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mockup-nav-item {
    font-size: 11px;
    padding: 6px 10px;
    border-radius: 6px;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.mockup-nav-item.active {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-primary);
    border-left: 2px solid var(--accent-primary);
}

.mockup-content {
    flex: 1;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mockup-row {
    height: 10px;
    background: rgba(136, 153, 176, 0.08);
    border-radius: 4px;
}
.mockup-row.short { width: 55%; }

.mockup-chart {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 84px;
    padding: 8px 0;
}
.chart-bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: 3px 3px 0 0;
    opacity: 0.65;
    animation: chart-grow 1.2s ease both;
}

@keyframes chart-grow { from { height: 0; } }

/* --- Mockup: 手机 APP --- */
.phone-mockup {
    width: 210px;
    background: var(--bg-card);
    border-radius: 36px;
    padding: 12px;
    border: 2px solid rgba(136, 153, 176, 0.12);
    box-shadow: var(--shadow-card);
    position: relative;
    z-index: 1;
}

.phone-notch {
    width: 56px; height: 5px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 0 0 8px 8px;
    margin: 0 auto;
}

.phone-screen {
    border-radius: 26px;
    overflow: hidden;
    background: var(--bg-secondary);
    padding: 16px 12px;
}

.phone-status {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    font-family: "SF Mono", monospace;
}

.phone-app {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.phone-album {
    width: 120px; height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.15), rgba(0, 212, 255, 0.12));
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid rgba(124, 92, 255, 0.2);
    animation: rotate-slow 24s linear infinite;
}

@keyframes rotate-slow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.album-disc {
    width: 100%; height: 100%;
    border-radius: 50%;
    border: 2px dashed rgba(124, 92, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.disc-inner {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 0 16px rgba(0, 212, 255, 0.4);
}

.phone-track-info {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
}
.track-bar {
    height: 6px;
    background: rgba(136, 153, 176, 0.1);
    border-radius: 3px;
    width: 78%;
}
.track-bar.short { width: 48%; }

.phone-waveform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    height: 40px;
}
.phone-waveform span {
    width: 3px;
    background: var(--accent-primary);
    border-radius: 2px;
    animation: wave-bounce 1.2s ease-in-out infinite;
    box-shadow: 0 0 6px rgba(0, 212, 255, 0.3);
}

.phone-waveform span:nth-child(n) { animation-delay: calc(var(--i, 0) * 0.1s); }
.phone-waveform span:nth-child(1) { --i: 0; }
.phone-waveform span:nth-child(2) { --i: 1; }
.phone-waveform span:nth-child(3) { --i: 2; }
.phone-waveform span:nth-child(4) { --i: 3; }
.phone-waveform span:nth-child(5) { --i: 4; }
.phone-waveform span:nth-child(6) { --i: 5; }
.phone-waveform span:nth-child(7) { --i: 6; }
.phone-waveform span:nth-child(8) { --i: 7; }
.phone-waveform span:nth-child(9) { --i: 8; }
.phone-waveform span:nth-child(10) { --i: 9; }
.phone-waveform span:nth-child(11) { --i: 10; }
.phone-waveform span:nth-child(12) { --i: 11; }

@keyframes wave-bounce {
    0%, 100% { transform: scaleY(0.4); opacity: 0.4; }
    50% { transform: scaleY(1); opacity: 1; }
}

.phone-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}
.phone-btn {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: rgba(136, 153, 176, 0.1);
}
.phone-btn.main {
    width: 42px; height: 42px;
    background: var(--gradient-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.35);
}

.phone-ai-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    background: rgba(124, 92, 255, 0.1);
    border: 1px solid rgba(124, 92, 255, 0.25);
    border-radius: 100px;
    font-size: 10px;
    color: #a78bfa;
    font-family: "SF Mono", monospace;
}
.ai-pulse {
    width: 6px; height: 6px;
    background: #a78bfa;
    border-radius: 50%;
    animation: pulse-ring 1.5s ease-in-out infinite;
    box-shadow: 0 0 6px rgba(167, 139, 250, 0.6);
}

/* --- Mockup: 浏览器 --- */
.browser-mockup {
    width: 100%;
    background: var(--bg-card);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 212, 255, 0.08);
    position: relative;
    z-index: 1;
}

.browser-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.35);
    border-bottom: 1px solid rgba(0, 212, 255, 0.06);
}
.browser-dot { width: 10px; height: 10px; border-radius: 50%; }
.browser-dot.red { background: #ff5f57; }
.browser-dot.yellow { background: #febc2e; }
.browser-dot.green { background: #28c840; }

.browser-url {
    margin-left: 12px;
    flex: 1;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    font-size: 11px;
    color: var(--text-tertiary);
    font-family: "SF Mono", monospace;
}

.browser-body { padding: 20px; }

.browser-hero {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.06);
}
.browser-hero-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.bht-line {
    height: 14px;
    background: var(--gradient-primary);
    border-radius: 4px;
    width: 68%;
    opacity: 0.55;
}
.bht-line.short { width: 42%; height: 10px; }

.browser-hero-img {
    width: 80px; height: 58px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(124, 92, 255, 0.1));
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.browser-products {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.browser-product {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.bp-img {
    width: 100%; height: 58px;
    background: rgba(136, 153, 176, 0.06);
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.06);
}
.bp-line {
    height: 8px;
    background: rgba(136, 153, 176, 0.1);
    border-radius: 4px;
}
.bp-line.short { width: 55%; }

/* --- 案例信息 --- */
.case-info { padding: 0 8px; }

.case-number {
    font-size: 60px;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 14px;
    opacity: 0.35;
    font-family: "SF Mono", "Cascadia Code", monospace;
}

.case-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 212, 255, 0.07);
    border: 1px solid rgba(0, 212, 255, 0.18);
    border-radius: 100px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 16px;
    font-family: "SF Mono", "Cascadia Code", monospace;
    letter-spacing: 0.5px;
}

.case-title {
    font-size: 27px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 22px;
    line-height: 1.4;
    letter-spacing: 0.3px;
}

.case-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.95;
    margin-bottom: 16px;
}

.case-results {
    display: flex;
    gap: 36px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.08);
}

.result-item { display: flex; flex-direction: column; }

.result-value {
    font-size: 30px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.result-label {
    font-size: 12.5px;
    color: var(--text-tertiary);
    margin-top: 7px;
    letter-spacing: 0.3px;
}

/* ===== 企业介绍 ===== */
.about {
    background: var(--bg-secondary);
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-bottom: 80px;
    align-items: start;
}

.about-intro p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2.1;
    margin-bottom: 22px;
}

.about-intro strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* 时间线 */
.about-timeline {
    position: relative;
    padding-left: 36px;
}

.about-timeline::before {
    content: "";
    position: absolute;
    left: 8px; top: 10px; bottom: 10px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.25;
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 34px;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -36px; top: 6px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 3px solid var(--accent-primary);
    z-index: 1;
    transition: var(--transition);
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.08);
}

.timeline-item:hover .timeline-dot {
    box-shadow: 0 0 0 8px rgba(0, 212, 255, 0.12), 0 0 20px rgba(0, 212, 255, 0.2);
    transform: scale(1.15);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 22px 26px;
    transition: var(--transition);
}

.timeline-item:hover .timeline-content {
    border-color: var(--border-hover);
    transform: translateX(6px);
    box-shadow: 0 4px 24px rgba(0, 212, 255, 0.06);
}

.timeline-year {
    display: inline-block;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 6px;
    letter-spacing: 1px;
    font-family: "SF Mono", "Cascadia Code", monospace;
}

.timeline-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* 经营范围 */
.about-scope {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 52px;
    position: relative;
}

.about-scope::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius) var(--radius) 0 0;
    opacity: 0.5;
}

.scope-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
    letter-spacing: 0.5px;
}

.scope-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}

.scope-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.85;
}

.scope-icon {
    flex-shrink: 0;
    width: 28px; height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.12);
    border-radius: 8px;
    color: var(--accent-primary);
    margin-top: 2px;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid rgba(0, 212, 255, 0.06);
    padding: 64px 0 32px;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .nav-logo {
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-tertiary);
    line-height: 2;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.footer-col a {
    font-size: 14px;
    color: var(--text-tertiary);
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--accent-primary);
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.25);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(0, 212, 255, 0.06);
    text-align: center;
}

.footer-bottom p {
    font-size: 12.5px;
    color: var(--text-tertiary);
    font-family: "SF Mono", "Cascadia Code", monospace;
    opacity: 0.6;
}

/* ===== 滚动动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(44px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 968px) {
    :root { --section-padding: 80px 0; }

    .nav-menu {
        position: fixed;
        top: 64px; left: 0;
        width: 100%;
        background: rgba(5, 10, 26, 0.96);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        padding: 28px 24px;
        gap: 18px;
        border-bottom: 1px solid rgba(0, 212, 255, 0.08);
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .nav-menu.active { transform: translateY(0); }
    .nav-toggle { display: flex; }

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
        justify-content: center;
    }
    .stat-divider { display: none; }
    .stat-item { padding: 0 16px; }

    .case-item,
    .case-reverse .case-visual,
    .case-reverse .case-info {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .case-reverse .case-visual { order: 1; }
    .case-reverse .case-info { order: 2; }

    .about-content {
        grid-template-columns: 1fr;
        gap: 44px;
    }
    .footer-content { grid-template-columns: 1fr; gap: 32px; }
    .footer-links { gap: 44px; }
    .scope-grid { grid-template-columns: 1fr; }
    .case-results { flex-wrap: wrap; gap: 22px; }
    .about-scope { padding: 36px 28px; }
}

@media (max-width: 600px) {
    .hero { padding: 100px 16px 60px; }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .btn { width: 100%; justify-content: center; }

    .hero-stats { gap: 16px; }
    .stat-item { padding: 0 8px; }
    .stat-num, .stat-suffix { font-size: 30px; }

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

    .case-visual-inner {
        padding: 28px;
        min-height: 290px;
    }

    .case-number { font-size: 44px; }
    .case-title { font-size: 22px; }

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