/* ==================== CSS 变量定义 ==================== */
:root {
    /* 配色体系 */
    --color-space-black: #000814;
    --color-deep-blue: #0a0e27;
    --color-dark-blue: #0d1b3e;
    --color-electric-blue: #0077ff;
    --color-bright-blue: #0096ff;
    --color-neon-cyan: #00f0ff;
    --color-neon-cyan-soft: #00ffe5;
    --color-silver: #a0aec0;
    --color-silver-light: #cbd5e0;
    --color-white: #ffffff;
    --color-text-dim: #718096;
    --color-card-bg: rgba(10, 20, 50, 0.6);
    --color-card-border: rgba(0, 150, 255, 0.15);
    --color-card-border-hover: rgba(0, 240, 255, 0.4);

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #0077ff 0%, #00f0ff 100%);
    --gradient-text: linear-gradient(135deg, #0096ff 0%, #00f0ff 50%, #00ffe5 100%);
    --gradient-card: linear-gradient(145deg, rgba(13, 27, 62, 0.8) 0%, rgba(0, 8, 20, 0.9) 100%);
    --gradient-border: linear-gradient(135deg, rgba(0, 119, 255, 0.3), rgba(0, 240, 255, 0.1));
    --gradient-glow: radial-gradient(circle, rgba(0, 119, 255, 0.15) 0%, transparent 70%);

    /* 阴影 */
    --shadow-card: 0 8px 32px rgba(0, 8, 20, 0.6);
    --shadow-glow: 0 0 40px rgba(0, 150, 255, 0.15);
    --shadow-glow-cyan: 0 0 30px rgba(0, 240, 255, 0.2);

    /* 过渡 */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
}

/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica,
        Arial, sans-serif;
    background: var(--color-space-black);
    color: var(--color-silver-light);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* 背景渐变层 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(0, 119, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(0, 119, 255, 0.05) 0%, transparent 50%),
        var(--color-space-black);
    z-index: -2;
    pointer-events: none;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* ==================== 粒子画布 & 网格背景 ==================== */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
}

.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 119, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 119, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -1;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 80%);
}

/* ==================== 通用样式 ==================== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--color-neon-cyan);
    font-weight: 600;
}

.section {
    padding: 120px 20px;
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 3px;
    font-weight: 600;
    color: var(--color-neon-cyan);
    padding: 6px 16px;
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    background: rgba(0, 240, 255, 0.05);
    margin-bottom: 20px;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-silver);
    max-width: 640px;
    margin: 0 auto;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(0, 119, 255, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 119, 255, 0.5);
}

.btn-ghost {
    background: rgba(0, 119, 255, 0.08);
    color: var(--color-neon-cyan);
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--color-neon-cyan);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

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

.navbar.scrolled {
    background: rgba(0, 8, 20, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-card-border);
    padding: 12px 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
}

.logo-icon {
    color: var(--color-neon-cyan);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    font-size: 1.1rem;
}

.logo-accent {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    padding: 8px 14px;
    font-size: 0.9rem;
    color: var(--color-silver);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-neon-cyan);
    background: rgba(0, 240, 255, 0.05);
}

.nav-link.active {
    color: var(--color-neon-cyan);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-neon-cyan);
    border-radius: 2px;
    box-shadow: 0 0 8px var(--color-neon-cyan);
}

.nav-cta {
    background: var(--gradient-primary);
    color: var(--color-white) !important;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    margin-left: 10px;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 119, 255, 0.4);
    background: var(--gradient-primary);
}

.nav-cta.active::after {
    display: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-neon-cyan);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

/* ==================== Hero 首屏 ==================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 20px 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 119, 255, 0.12) 0%, transparent 60%);
    z-index: -1;
    animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.25);
    border-radius: 30px;
    font-size: 0.85rem;
    color: var(--color-neon-cyan);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-neon-cyan);
    box-shadow: 0 0 10px var(--color-neon-cyan);
    animation: dot-blink 1.5s ease-in-out infinite;
}

@keyframes dot-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: 3.8rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: 28px;
    letter-spacing: 2px;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-silver);
    margin-bottom: 48px;
    line-height: 1.9;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1;
}

.stat-plus {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-neon-cyan);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-silver);
    margin-top: 8px;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, transparent, var(--color-card-border-hover), transparent);
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-dim);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-neon-cyan), transparent);
    animation: scroll-down 2s ease-in-out infinite;
}

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

/* ==================== 核心赋能板块 ==================== */
.empower-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.empower-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 44px 32px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.empower-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.empower-card:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow-cyan);
}

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

.empower-card-center {
    transform: translateY(-20px);
}

.empower-card-center:hover {
    transform: translateY(-26px);
}

.empower-icon-wrap {
    width: 72px;
    height: 72px;
    margin-bottom: 24px;
    position: relative;
}

.empower-icon {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.3));
}

.empower-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
}

.empower-text {
    font-size: 0.95rem;
    color: var(--color-silver);
    margin-bottom: 24px;
    line-height: 1.8;
}

.empower-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.empower-list li {
    font-size: 0.9rem;
    color: var(--color-silver-light);
    padding-left: 20px;
    position: relative;
}

.empower-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-neon-cyan);
    box-shadow: 0 0 6px var(--color-neon-cyan);
}

/* ==================== 业务课程 ==================== */
.section-courses .courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.course-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.course-card:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.course-num {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    padding: 20px 24px 0;
    line-height: 1;
    opacity: 0.8;
}

.course-body {
    padding: 8px 24px 28px;
}

.course-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 10px;
}

.course-desc {
    font-size: 0.85rem;
    color: var(--color-silver);
    line-height: 1.7;
    margin-bottom: 16px;
}

.course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.course-tags span {
    font-size: 0.72rem;
    color: var(--color-neon-cyan);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.15);
    padding: 3px 10px;
    border-radius: 12px;
}

/* ==================== 服务体系 ==================== */
.section-system .system-flow {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.flow-node {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 200px;
}

.flow-node-inner {
    flex: 1;
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
}

.flow-node-inner:hover {
    border-color: var(--color-card-border-hover);
    box-shadow: var(--shadow-glow-cyan);
    transform: translateY(-4px);
}

.flow-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.25));
}

.flow-icon svg {
    width: 100%;
    height: 100%;
}

.flow-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 10px;
}

.flow-desc {
    font-size: 0.85rem;
    color: var(--color-silver);
    line-height: 1.6;
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--color-neon-cyan);
    padding: 0 12px;
    opacity: 0.6;
    text-shadow: 0 0 8px var(--color-neon-cyan);
}

.system-cta {
    text-align: center;
    padding: 40px 60px;
    background: rgba(0, 119, 255, 0.05);
    border: 1px solid rgba(0, 119, 255, 0.15);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.system-cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.system-cta p {
    font-size: 1.1rem;
    color: var(--color-white);
    position: relative;
    z-index: 1;
}

/* ==================== 案例展示 ==================== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.case-card:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.case-tag {
    font-size: 0.78rem;
    color: var(--color-white);
    background: var(--gradient-primary);
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
}

.case-region {
    font-size: 0.75rem;
    color: var(--color-silver);
}

.case-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
    line-height: 1.5;
}

.case-desc {
    font-size: 0.88rem;
    color: var(--color-silver);
    line-height: 1.7;
    margin-bottom: 24px;
}

.case-metrics {
    display: flex;
    gap: 12px;
    border-top: 1px solid var(--color-card-border);
    padding-top: 20px;
}

.metric {
    flex: 1;
    text-align: center;
}

.metric-value {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-label {
    display: block;
    font-size: 0.72rem;
    color: var(--color-silver);
    margin-top: 4px;
}

/* ==================== 客户口碑 ==================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: all var(--transition-base);
    position: relative;
}

.testimonial-card:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-3px);
}

.quote-mark {
    position: absolute;
    top: 16px;
    right: 28px;
    font-size: 4rem;
    font-family: Georgia, serif;
    color: var(--color-neon-cyan);
    opacity: 0.15;
    line-height: 1;
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--color-silver-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
}

.author-name {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-white);
}

.author-role {
    display: block;
    font-size: 0.8rem;
    color: var(--color-silver);
}

/* ==================== 关于我们 ==================== */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

.about-text {
    font-size: 0.98rem;
    color: var(--color-silver);
    line-height: 1.9;
    margin-bottom: 18px;
}

.about-text strong {
    color: var(--color-neon-cyan);
}

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

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--color-silver-light);
}

.feature-check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--color-neon-cyan);
    flex-shrink: 0;
}

/* AI核心视觉 */
.about-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-visual {
    width: 380px;
    height: 380px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.visual-ring-1 {
    width: 120px;
    height: 120px;
    border-color: rgba(0, 240, 255, 0.4);
    animation: ring-rotate 20s linear infinite;
}

.visual-ring-2 {
    width: 220px;
    height: 220px;
    border-color: rgba(0, 119, 255, 0.25);
    border-style: dashed;
    animation: ring-rotate 30s linear infinite reverse;
}

.visual-ring-3 {
    width: 340px;
    height: 340px;
    border-color: rgba(0, 240, 255, 0.12);
    animation: ring-rotate 40s linear infinite;
}

@keyframes ring-rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.visual-core {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 119, 255, 0.3) 0%, rgba(0, 8, 20, 0.8) 100%);
    border: 2px solid rgba(0, 240, 255, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(0, 119, 255, 0.3), inset 0 0 20px rgba(0, 240, 255, 0.1);
    z-index: 2;
}

.core-text {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.core-subtext {
    font-size: 0.65rem;
    color: var(--color-neon-cyan);
    margin-top: 4px;
    letter-spacing: 1px;
}

.visual-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.visual-orbit-1 { width: 120px; height: 120px; animation: orbit-spin 20s linear infinite; }
.visual-orbit-2 { width: 220px; height: 220px; animation: orbit-spin 30s linear infinite reverse; }
.visual-orbit-3 { width: 220px; height: 220px; animation: orbit-spin 25s linear infinite; }
.visual-orbit-4 { width: 340px; height: 340px; animation: orbit-spin 40s linear infinite reverse; }

@keyframes orbit-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orbit-dot {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-neon-cyan);
    background: rgba(0, 8, 20, 0.9);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 12px;
    white-space: nowrap;
    animation: counter-spin 20s linear infinite;
}

.visual-orbit-2 .orbit-dot { animation-duration: 30s; animation-direction: reverse; }
.visual-orbit-3 .orbit-dot { animation-duration: 25s; }
.visual-orbit-4 .orbit-dot { animation-duration: 40s; animation-direction: reverse; }

@keyframes counter-spin {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(-360deg); }
}

/* ==================== 咨询入口 ==================== */
.section-contact {
    position: relative;
    overflow: hidden;
}

.contact-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 30% 50%, rgba(0, 119, 255, 0.08) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.contact-left .section-tag {
    margin-bottom: 20px;
}

.contact-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
    line-height: 1.4;
}

.contact-desc {
    font-size: 1rem;
    color: var(--color-silver);
    line-height: 1.8;
    margin-bottom: 32px;
}

.contact-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 40px;
}

.contact-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--color-silver-light);
}

.cf-icon {
    color: var(--color-neon-cyan);
    font-weight: 700;
}

.contact-direct {
    display: flex;
    gap: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--color-card-border);
}

.direct-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.direct-label {
    font-size: 0.8rem;
    color: var(--color-silver);
}

.direct-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
}

/* 表单 */
.contact-form {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    color: var(--color-silver-light);
    margin-bottom: 8px;
    font-weight: 500;
}

.required {
    color: var(--color-neon-cyan);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 8, 20, 0.5);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-neon-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2300f0ff' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.form-group select option {
    background: var(--color-deep-blue);
    color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-privacy {
    text-align: center;
    font-size: 0.78rem;
    color: var(--color-text-dim);
    margin-top: 16px;
}

/* ==================== Footer ==================== */
.footer {
    background: rgba(0, 5, 15, 0.6);
    border-top: 1px solid var(--color-card-border);
    padding: 60px 20px 30px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.88rem;
    color: var(--color-silver);
    line-height: 1.8;
}

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

.footer-col-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 0.85rem;
    color: var(--color-silver);
}

.footer-col ul li a:hover {
    color: var(--color-neon-cyan);
}

.footer-bottom {
    border-top: 1px solid var(--color-card-border);
    padding-top: 30px;
}

.footer-seo {
    margin-bottom: 20px;
    line-height: 2;
}

.seo-label {
    font-size: 0.8rem;
    color: var(--color-silver);
    margin-right: 8px;
}

.footer-seo a {
    font-size: 0.8rem;
    color: var(--color-silver);
}

.footer-seo a:hover {
    color: var(--color-neon-cyan);
}

.seo-sep {
    color: var(--color-text-dim);
    margin: 0 6px;
}

.footer-copyright {
    text-align: center;
}

.footer-copyright p {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-bottom: 4px;
}

.footer-icp {
    font-size: 0.75rem !important;
    color: var(--color-text-dim);
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px rgba(0, 119, 255, 0.3);
    z-index: 999;
    color: white;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 119, 255, 0.5);
}

/* ==================== 滚动动画 ==================== */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: var(--delay, 0s);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 响应式适配 ==================== */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2.1rem;
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .empower-card-center {
        transform: none;
    }

    .empower-card-center:hover {
        transform: translateY(-6px);
    }

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

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

    .system-flow {
        flex-direction: column;
        gap: 16px;
    }

    .flow-node {
        width: 100%;
    }

    .flow-arrow {
        transform: rotate(90deg);
        padding: 8px 0;
    }

    .about-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 16px;
    }

    .section-header {
        margin-bottom: 50px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-desc {
        font-size: 0.95rem;
    }

    /* 导航 */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        height: 100vh;
        background: rgba(0, 8, 20, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 80px 30px;
        gap: 8px;
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-card-border);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1rem;
        padding: 12px 0;
        width: 100%;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
        text-align: center;
    }

    .hamburger {
        display: flex;
    }

    /* Hero */
    .hero-section {
        padding: 100px 16px 60px;
    }

    .hero-title {
        font-size: 2.2rem;
        letter-spacing: 1px;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-stats {
        gap: 12px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-plus {
        font-size: 1rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .stat-divider {
        height: 35px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

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

    /* 课程 */
    .section-courses .courses-grid {
        grid-template-columns: 1fr;
    }

    /* 口碑 */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    /* 关于我们视觉 */
    .about-visual {
        width: 280px;
        height: 280px;
    }

    .visual-ring-1 { width: 100px; height: 100px; }
    .visual-ring-2 { width: 180px; height: 180px; }
    .visual-ring-3 { width: 260px; height: 260px; }
    .visual-core { width: 80px; height: 80px; }
    .visual-orbit-1 { width: 100px; height: 100px; }
    .visual-orbit-2, .visual-orbit-3 { width: 180px; height: 180px; }
    .visual-orbit-4 { width: 260px; height: 260px; }

    /* 表单 */
    .contact-form {
        padding: 28px 20px;
    }

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

    .contact-direct {
        flex-direction: column;
        gap: 20px;
    }

    /* Footer */
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .footer-seo {
        line-height: 2.2;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-badge {
        font-size: 0.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .empower-card,
    .case-card,
    .testimonial-card {
        padding: 24px 20px;
    }

    .contact-form {
        padding: 24px 16px;
    }

    .system-cta {
        padding: 30px 20px;
    }

    .system-cta p {
        font-size: 0.95rem;
    }
}

/* ==================== 新增板块样式补充 ==================== */

/* ==================== GEO获客优化布局 ==================== */
.section-geo .geo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.geo-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.geo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.geo-card:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow-cyan);
}

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

.geo-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 22px;
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.3));
}

.geo-icon svg {
    width: 100%;
    height: 100%;
}

.geo-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 14px;
}

.geo-text {
    font-size: 0.9rem;
    color: var(--color-silver);
    line-height: 1.75;
    margin-bottom: 20px;
}

.geo-list {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.geo-list li {
    font-size: 0.85rem;
    color: var(--color-silver-light);
    padding-left: 18px;
    position: relative;
}

.geo-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-neon-cyan);
    box-shadow: 0 0 6px var(--color-neon-cyan);
}

.geo-cta {
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.geo-cta:hover {
    border-color: var(--color-card-border-hover);
}

.geo-cta-glow {
    position: absolute;
    top: 50%;
    left: 20%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 119, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.geo-cta-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.geo-cta-text h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 8px;
}

.geo-cta-text p {
    font-size: 0.95rem;
    color: var(--color-silver);
    max-width: 500px;
}

/* ==================== 案例展示（新版带图片） ==================== */
.case-card {
    padding: 0;
    display: flex;
    flex-direction: column;
}

.case-media {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    border-bottom: 1px solid var(--color-card-border);
}

.case-scene {
    position: absolute;
    top: 0;
    left: 0;
    width: 60%;
    height: 100%;
    object-fit: cover;
    border-right: 1px solid var(--color-card-border);
}

.case-screenshot {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.case-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 70%, rgba(0, 8, 20, 0.6) 100%);
    pointer-events: none;
}

.case-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-card .case-header {
    margin-bottom: 12px;
}

.case-card .case-title {
    margin-bottom: 10px;
}

.case-card .case-desc {
    flex: 1;
    margin-bottom: 20px;
}

.case-card .case-metrics {
    margin-top: auto;
}

/* ==================== 创始人介绍 ==================== */
.section-founder {
    position: relative;
}

.founder-container {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.founder-photo-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.founder-photo-glow {
    position: absolute;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(0, 119, 255, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.founder-photo {
    width: 340px;
    height: 430px;
    object-fit: cover;
    object-position: center top;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-glow);
    position: relative;
    z-index: 1;
    transition: all var(--transition-base);
}

.founder-photo-wrap:hover .founder-photo {
    border-color: var(--color-card-border-hover);
    box-shadow: var(--shadow-glow-cyan);
}

.founder-badge {
    position: absolute;
    bottom: -16px;
    right: 10%;
    background: rgba(0, 8, 20, 0.9);
    border: 1px solid var(--color-card-border-hover);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-glow);
}

.fb-icon {
    color: var(--color-neon-cyan);
    font-size: 1.2rem;
}

.fb-title {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white);
}

.fb-sub {
    display: block;
    font-size: 0.72rem;
    color: var(--color-silver);
}

.founder-name {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 18px;
}

.founder-title {
    font-size: 1rem;
    font-weight: 500;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-left: 12px;
}

.founder-bio {
    font-size: 0.95rem;
    color: var(--color-silver);
    line-height: 1.85;
    margin-bottom: 16px;
}

.founder-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 28px 0;
    padding: 24px;
    background: rgba(0, 119, 255, 0.05);
    border: 1px solid rgba(0, 119, 255, 0.15);
    border-radius: var(--radius-md);
}

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

.f-stat-num {
    display: block;
    font-size: 1.7rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1;
}

.f-stat-unit {
    font-size: 0.85rem;
    color: var(--color-neon-cyan);
    font-weight: 600;
}

.f-stat-label {
    display: block;
    font-size: 0.72rem;
    color: var(--color-silver);
    margin-top: 8px;
}

.founder-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.f-tag {
    font-size: 0.82rem;
    color: var(--color-neon-cyan);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid rgba(0, 240, 255, 0.18);
    padding: 6px 14px;
    border-radius: 20px;
}

/* ==================== 线下课往期精彩照片墙 ==================== */
.section-gallery {
    position: relative;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 220px;
    gap: 16px;
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-card-border);
    cursor: pointer;
    transition: all var(--transition-base);
}

.gallery-item:hover {
    border-color: var(--color-card-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item-large {
    grid-row: span 2;
}

.gallery-item-wide {
    grid-column: span 2;
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 8, 20, 0.85) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 16px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-title {
    color: var(--color-white);
    font-size: 0.9rem;
    font-weight: 600;
}

.gallery-tip {
    text-align: center;
    margin-top: 24px;
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

/* ==================== Lightbox 灯箱 ==================== */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 8, 20, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-card-border);
    transform: scale(0.95);
    transition: transform var(--transition-base);
}

.lightbox.active .lightbox-img {
    transform: scale(1);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(0, 119, 255, 0.2);
    border: 1px solid var(--color-card-border);
    color: var(--color-white);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.8rem;
    transition: all var(--transition-fast);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: scale(1.1);
}

.lightbox-close {
    top: 24px;
    right: 24px;
}

.lightbox-prev {
    left: 24px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-silver-light);
    font-size: 0.95rem;
    padding: 10px 24px;
    background: rgba(0, 8, 20, 0.7);
    border-radius: 20px;
    border: 1px solid var(--color-card-border);
}

/* ==================== 响应式补充 ==================== */
@media (max-width: 1024px) {
    .section-geo .geo-grid {
        grid-template-columns: 1fr;
    }

    .geo-cta-content {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }

    .geo-cta-text p {
        max-width: 100%;
    }

    .founder-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .founder-photo-wrap {
        order: -1;
    }

    .founder-photo {
        width: 280px;
        height: 360px;
    }

    .founder-badge {
        right: 18%;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 180px;
    }

    .gallery-item-large,
    .gallery-item-wide {
        grid-row: span 1;
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .geo-card {
        padding: 28px 22px;
    }

    .geo-cta {
        padding: 30px 24px;
    }

    .case-media {
        height: 180px;
    }

    .case-body {
        padding: 22px;
    }

    .founder-photo {
        width: 240px;
        height: 310px;
    }

    .founder-badge {
        right: 5%;
        padding: 10px 14px;
    }

    .founder-name {
        font-size: 1.5rem;
    }

    .founder-title {
        display: block;
        margin-left: 0;
        margin-top: 6px;
    }

    .founder-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 18px;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        grid-auto-rows: 240px;
    }

    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        width: 42px;
        height: 42px;
        font-size: 1.4rem;
    }

    .lightbox-close {
        top: 16px;
        right: 16px;
    }

    .lightbox-prev {
        left: 12px;
    }

    .lightbox-next {
        right: 12px;
    }
}

@media (max-width: 480px) {
    .case-media {
        height: 160px;
    }

    .case-metrics {
        flex-wrap: wrap;
    }

    .metric {
        min-width: 30%;
    }

    .founder-photo {
        width: 200px;
        height: 260px;
    }

    .founder-badge {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: -24px;
        margin-left: auto;
        margin-right: auto;
        width: fit-content;
        z-index: 2;
    }
}

/* ==================== 联系方式与微信二维码 ==================== */

.direct-tel {
    color: var(--color-neon-cyan);
    text-decoration: none;
    transition: color var(--transition-base);
}

.direct-tel:hover {
    color: var(--color-electric-blue);
    text-shadow: 0 0 12px rgba(0, 119, 255, 0.5);
}

.direct-wechat {
    align-items: flex-start;
}

.wechat-qr-img {
    width: 130px;
    height: 130px;
    object-fit: contain;
    margin-top: 10px;
    border-radius: 12px;
    border: 1px solid var(--color-card-border);
    background: var(--color-white);
    padding: 6px;
    box-shadow: 0 8px 32px rgba(0, 240, 255, 0.12);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
}

.wechat-qr-img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 240, 255, 0.22);
}

.qr-hint {
    font-size: 0.75rem;
    color: var(--color-silver);
    margin-top: 6px;
}

.footer-contact {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-tel {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-neon-cyan);
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-tel:hover {
    color: var(--color-electric-blue);
}

.footer-tel svg {
    flex-shrink: 0;
}

.footer-wechat {
    font-size: 0.85rem;
    color: var(--color-silver-light);
}

/* 微信二维码灯箱 */
.qr-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 8, 20, 0.92);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.qr-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.qr-lightbox img {
    max-width: 86vw;
    max-height: 86vh;
    border-radius: 16px;
    border: 1px solid var(--color-card-border);
    background: var(--color-white);
    padding: 10px;
    box-shadow: 0 24px 80px rgba(0, 240, 255, 0.2);
}

.qr-lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-card);
    border: 1px solid var(--color-card-border);
    color: var(--color-white);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.qr-lightbox-close:hover {
    background: var(--color-electric-blue);
    border-color: var(--color-electric-blue);
}

@media (max-width: 768px) {
    .contact-direct {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 24px;
    }

    .wechat-qr-img {
        width: 110px;
        height: 110px;
    }

    .footer-contact {
        align-items: flex-start;
    }
}

/* ==================== 结束 ==================== */