/* ===================================
   全局样式 & CSS变量
=================================== */
:root {
    --primary: #0066FF;
    --primary-dark: #0044CC;
    --primary-light: #3385FF;
    --accent-orange: #FF6B35;
    --accent-green: #00D68F;
    --accent-cyan: #00E5FF;
    --bg-dark: #050A14;
    --bg-card: #0D1525;
    --bg-card-border: #1A2A45;
    --text-primary: #F0F4FF;
    --text-secondary: #8A9BBD;
    --text-muted: #4A5A7A;
    --gradient-main: linear-gradient(135deg, #0066FF 0%, #00E5FF 100%);
    --gradient-hero: linear-gradient(180deg, #050A14 0%, #071228 50%, #050A14 100%);
    --shadow-glow: 0 0 40px rgba(0, 102, 255, 0.3);
    --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.4);
    --radius-card: 16px;
    --radius-btn: 50px;
    --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', sans-serif;
    --font-en: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-cn);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ===================================
   导航栏
=================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(5, 10, 20, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 12px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-cta {
    background: var(--gradient-main) !important;
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius-btn);
    font-weight: 600 !important;
    transition: transform 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ===================================
   Hero 区域
=================================== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
}

.hero-glow-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -100px;
    left: -200px;
}

.hero-glow-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-cyan);
    bottom: -100px;
    right: -100px;
    opacity: 0.1;
}

.hero-container {
    max-width: 600px;
    margin-left: auto;
    padding: 0 24px 0 48px;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 102, 255, 0.15);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    padding: 8px 18px;
    font-size: 13px;
    color: var(--accent-cyan);
    margin-bottom: 28px;
    font-weight: 500;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

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

.price-highlight {
    color: var(--accent-orange);
    font-family: var(--font-en);
}

.num-highlight {
    background: linear-gradient(135deg, #FF6B35, #FFB347);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--accent-green);
}

.hero-ctas {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-main);
    color: white;
    text-decoration: none;
    padding: 16px 36px;
    border-radius: var(--radius-btn);
    font-size: 17px;
    font-weight: 700;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.5);
}

.btn-glow {
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 16px 24px;
    border-radius: var(--radius-btn);
    font-size: 16px;
    font-weight: 500;
    border: 1px solid var(--bg-card-border);
    transition: all 0.3s;
}

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--primary);
    background: rgba(0, 102, 255, 0.08);
}

.btn-large {
    padding: 20px 48px;
    font-size: 19px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

.stat-num {
    font-family: var(--font-en);
    font-size: 28px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--bg-card-border);
}

/* Hero 右侧机器人卡片 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    z-index: 1;
}

.robot-card {
    background: rgba(13, 21, 37, 0.8);
    border: 1px solid var(--bg-card-border);
    border-radius: 24px;
    padding: 32px;
    width: 320px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,0.05);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

.robot-avatar {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
}

.robot-body {
    position: relative;
    z-index: 1;
}

.robot-head {
    width: 80px;
    height: 70px;
    background: linear-gradient(135deg, #1a3a6b, #0d2040);
    border-radius: 16px;
    margin: 0 auto 4px;
    border: 2px solid var(--primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 0 20px rgba(0,102,255,0.4);
}

.robot-eyes {
    display: flex;
    gap: 16px;
}

.eye {
    width: 14px;
    height: 14px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
    animation: blink 4s infinite;
}

.eye-right {
    animation-delay: 0.1s;
}

@keyframes blink {
    0%, 90%, 100% { transform: scaleY(1); }
    95% { transform: scaleY(0.1); }
}

.robot-mouth {
    width: 30px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
    box-shadow: 0 0 8px var(--primary);
}

.robot-torso {
    width: 90px;
    height: 60px;
    background: linear-gradient(135deg, #0f2545, #071228);
    border-radius: 12px;
    margin: 0 auto;
    border: 2px solid rgba(0,102,255,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.robot-chest-light {
    width: 24px;
    height: 24px;
    background: var(--gradient-main);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--primary);
    animation: chest-pulse 2s infinite;
}

@keyframes chest-pulse {
    0%, 100% { box-shadow: 0 0 20px var(--primary); }
    50% { box-shadow: 0 0 40px var(--primary), 0 0 60px rgba(0,229,255,0.3); }
}

.robot-lobster-claw {
    width: 50px;
    height: 20px;
    background: linear-gradient(90deg, #FF6B35, #FF8C55);
    border-radius: 10px;
    margin: 6px auto 0;
    position: relative;
    box-shadow: 0 0 12px rgba(255,107,53,0.5);
}

.robot-lobster-claw::after {
    content: '🦞';
    position: absolute;
    right: -24px;
    top: -8px;
    font-size: 20px;
}

.robot-pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    border: 2px solid rgba(0,102,255,0.2);
    border-radius: 50%;
    animation: pulse-ring 3s infinite;
}

.ring-2 {
    animation-delay: 1.5s;
    width: 150px;
    height: 150px;
    border-color: rgba(0,229,255,0.1);
}

@keyframes pulse-ring {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.4); opacity: 0; }
}

.robot-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding: 8px 12px;
    background: rgba(0, 102, 255, 0.08);
    border-radius: 8px;
    border: 1px solid rgba(0,102,255,0.2);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-green);
    flex-shrink: 0;
    animation: pulse-dot 1.5s infinite;
}

.robot-tasks {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.task-item {
    font-size: 13px;
    padding: 8px 12px;
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    color: var(--text-secondary);
}

.task-item.done {
    color: var(--accent-green);
    background: rgba(0, 214, 143, 0.06);
}

.task-item.active {
    color: var(--accent-cyan);
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0,229,255,0.15);
    animation: text-pulse 2s infinite;
}

@keyframes text-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 12px;
    animation: bounce 2s infinite;
    z-index: 1;
}

.scroll-arrow {
    font-size: 18px;
    color: var(--primary);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(6px); }
}

/* ===================================
   通用区块样式
=================================== */
section {
    padding: 100px 0;
}

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

.section-header h2 {
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light h2 {
    color: var(--text-primary);
}

.section-tag {
    display: inline-block;
    background: rgba(0, 102, 255, 0.15);
    color: var(--primary-light);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    padding: 6px 18px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

/* ===================================
   痛点对比区
=================================== */
.comparison {
    background: var(--bg-dark);
    position: relative;
}

.comparison::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0,102,255,0.03) 0%, transparent 70%);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 24px;
    align-items: stretch;
    position: relative;
    z-index: 1;
}

.compare-card {
    background: var(--bg-card);
    border-radius: var(--radius-card);
    padding: 32px;
    border: 1px solid var(--bg-card-border);
}

.compare-bad {
    border-color: rgba(255, 59, 48, 0.2);
    background: rgba(255, 59, 48, 0.03);
}

.compare-good {
    border-color: rgba(0, 214, 143, 0.3);
    background: rgba(0, 214, 143, 0.03);
    box-shadow: 0 0 30px rgba(0, 214, 143, 0.08);
}

.compare-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--bg-card-border);
}

.compare-icon {
    font-size: 32px;
}

.compare-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.compare-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 28px;
}

.compare-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.bad-icon, .good-icon {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 2px;
}

.compare-list li strong {
    display: block;
    font-size: 15px;
    margin-bottom: 3px;
}

.compare-list li p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.compare-cost {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    background: rgba(255, 59, 48, 0.08);
    border-radius: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.compare-cost strong {
    font-size: 20px;
    color: #FF453A;
    font-family: var(--font-en);
}

.compare-cost-good {
    background: rgba(0, 214, 143, 0.08);
}

.compare-cost-good strong {
    color: var(--accent-green);
}

.save-badge {
    background: var(--accent-green);
    color: #000;
    font-size: 12px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    margin-left: auto;
}

.vs-divider {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 8px;
}

.vs-text {
    font-family: var(--font-en);
    font-size: 22px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.vs-arrow {
    font-size: 24px;
    color: var(--primary);
    animation: arrow-pulse 1.5s infinite;
}

@keyframes arrow-pulse {
    0%, 100% { transform: translateX(0); opacity: 1; }
    50% { transform: translateX(4px); opacity: 0.7; }
}

/* ===================================
   演示视频区
=================================== */
.demo-video {
    background: linear-gradient(180deg, #050A14 0%, #071228 50%, #050A14 100%);
}

.video-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 20px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
    margin-bottom: 24px;
    cursor: pointer;
    transition: border-color 0.3s;
}

.video-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0,102,255,0.08) 0%, transparent 70%);
}

.video-placeholder:hover {
    border-color: rgba(0,102,255,0.5);
}

.video-play-btn {
    width: 80px;
    height: 80px;
    background: var(--gradient-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 40px rgba(0,102,255,0.5);
    transition: transform 0.3s;
    position: relative;
    z-index: 1;
}

.video-placeholder:hover .video-play-btn {
    transform: scale(1.1);
}

.play-icon {
    font-size: 28px;
    color: white;
    margin-left: 4px;
}

.video-label {
    text-align: center;
    position: relative;
    z-index: 1;
}

.video-label span {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.video-label p {
    font-size: 14px;
    color: var(--text-muted);
}

.video-overlay-text {
    position: absolute;
    bottom: 20px;
    font-size: 14px;
    color: var(--text-secondary);
    z-index: 1;
}

.video-overlay-text a {
    color: var(--primary-light);
    text-decoration: underline;
}

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

.vf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 14px;
    font-weight: 500;
    transition: border-color 0.3s;
}

.vf-item:hover {
    border-color: rgba(0,102,255,0.4);
}

.vf-icon {
    font-size: 22px;
}

/* ===================================
   套餐定价
=================================== */
.pricing-section {
    background: var(--bg-dark);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
    margin-bottom: 32px;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-card);
    padding: 32px;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.price-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.price-card-featured {
    border-color: var(--primary);
    background: linear-gradient(180deg, rgba(0,102,255,0.08) 0%, var(--bg-card) 100%);
    box-shadow: 0 0 40px rgba(0,102,255,0.15);
    transform: translateY(-8px);
}

.price-card-featured:hover {
    transform: translateY(-12px);
}

.featured-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-main);
    color: white;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 20px;
    border-radius: 50px;
    white-space: nowrap;
    box-shadow: 0 4px 15px rgba(0,102,255,0.4);
}

.plan-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--bg-card-border);
}

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

.currency {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-en);
}

.amount {
    font-size: 52px;
    font-weight: 900;
    font-family: var(--font-en);
    line-height: 1;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.period {
    font-size: 16px;
    color: var(--text-muted);
}

.plan-original {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 28px;
    text-decoration: line-through;
    display: flex;
    align-items: center;
    gap: 8px;
}

.discount-tag {
    text-decoration: none;
    background: rgba(255, 107, 53, 0.15);
    color: var(--accent-orange);
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.plan-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.plan-features li {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.plan-features li strong {
    color: var(--text-primary);
}

.plan-btn {
    display: block;
    text-align: center;
    padding: 14px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s;
}

.plan-btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 20px rgba(0,102,255,0.4);
}

.plan-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,102,255,0.5);
}

.plan-btn-outline {
    border: 1px solid var(--bg-card-border);
    color: var(--text-secondary);
}

.plan-btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary-light);
    background: rgba(0,102,255,0.05);
}

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

.pricing-note {
    text-align: center;
    font-size: 15px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.pricing-note a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
}

.pricing-note a:hover {
    text-decoration: underline;
}

/* ===================================
   信任区
=================================== */
.trust-section {
    background: linear-gradient(180deg, #050A14 0%, #071228 100%);
}

.testimonials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-card);
    padding: 28px;
    transition: transform 0.3s, border-color 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,102,255,0.3);
}

.testimonial-content {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(255,255,255,0.02);
    border-radius: 12px;
    border-left: 3px solid var(--primary);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.author-info {
    flex: 1;
}

.author-info strong {
    display: block;
    font-size: 15px;
    color: var(--text-primary);
}

.author-info span {
    font-size: 12px;
    color: var(--text-muted);
}

.stars {
    font-size: 14px;
    flex-shrink: 0;
}

.trust-badges {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-card);
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.trust-num {
    font-family: var(--font-en);
    font-size: 40px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.trust-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===================================
   底部CTA
=================================== */
.bottom-cta {
    background: linear-gradient(135deg, #071228 0%, #0d1f3a 50%, #071228 100%);
    border-top: 1px solid var(--bg-card-border);
    border-bottom: 1px solid var(--bg-card-border);
    padding: 80px 0;
}

.cta-content {
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.wechat-cta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.qr-placeholder {
    width: 80px;
    height: 80px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.qr-icon {
    font-size: 40px;
}

.wechat-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: left;
}

.wechat-text strong {
    font-size: 16px;
    color: var(--text-primary);
}

.wechat-text span {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===================================
   页脚
=================================== */
.footer {
    background: #030810;
    padding: 60px 0 32px;
    border-top: 1px solid var(--bg-card-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
    padding: 4px 0;
    transition: color 0.2s;
}

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

.footer-contact p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--bg-card-border);
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

/* ===================================
   定价页特有样式
=================================== */
.page-hero {
    padding: 160px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, #071228 0%, #050A14 100%);
    border-bottom: 1px solid var(--bg-card-border);
}

.page-hero h1 {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 900;
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius-card);
    overflow: hidden;
    border: 1px solid var(--bg-card-border);
}

.pricing-table th {
    padding: 20px 24px;
    text-align: center;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-secondary);
    background: rgba(0,102,255,0.05);
    border-bottom: 1px solid var(--bg-card-border);
}

.pricing-table th:first-child {
    text-align: left;
}

.pricing-table th.highlight {
    color: var(--primary-light);
    background: rgba(0,102,255,0.1);
}

.pricing-table td {
    padding: 16px 24px;
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.pricing-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--text-primary);
}

.pricing-table td.highlight {
    background: rgba(0,102,255,0.05);
    color: var(--text-primary);
}

.pricing-table tr:last-child td {
    border-bottom: none;
}

.pricing-table .check { color: var(--accent-green); font-size: 16px; }
.pricing-table .cross { color: var(--text-muted); font-size: 16px; }

/* ===================================
   案例页样式
=================================== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0,102,255,0.4);
}

.case-header {
    padding: 24px 28px;
    background: linear-gradient(135deg, rgba(0,102,255,0.1) 0%, transparent 100%);
    border-bottom: 1px solid var(--bg-card-border);
    display: flex;
    align-items: center;
    gap: 16px;
}

.case-icon {
    font-size: 40px;
}

.case-header h3 {
    font-size: 20px;
    font-weight: 700;
}

.case-header p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.case-body {
    padding: 28px;
}

.case-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.case-before, .case-after {
    padding: 16px;
    border-radius: 12px;
}

.case-before {
    background: rgba(255, 59, 48, 0.06);
    border: 1px solid rgba(255, 59, 48, 0.15);
}

.case-after {
    background: rgba(0, 214, 143, 0.06);
    border: 1px solid rgba(0, 214, 143, 0.2);
}

.case-before h4, .case-after h4 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    color: var(--text-muted);
}

.case-before ul, .case-after ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-before li, .case-after li {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.case-result {
    padding: 16px 20px;
    background: rgba(0, 102, 255, 0.08);
    border-radius: 12px;
    font-size: 14px;
    color: var(--primary-light);
    font-weight: 600;
    border: 1px solid rgba(0,102,255,0.2);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===================================
   FAQ页样式
=================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: border-color 0.3s;
}

.faq-item:hover {
    border-color: rgba(0,102,255,0.3);
}

.faq-question {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    user-select: none;
}

.faq-toggle {
    font-size: 20px;
    color: var(--primary);
    transition: transform 0.3s;
    flex-shrink: 0;
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 24px 24px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    border-top: 1px solid var(--bg-card-border);
    padding-top: 16px;
}

/* ===================================
   预约演示页
=================================== */
.demo-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 24px;
    padding: 48px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--bg-card-border);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 15px;
    color: var(--text-primary);
    font-family: var(--font-cn);
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,102,255,0.15);
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-submit {
    width: 100%;
    background: var(--gradient-main);
    color: white;
    border: none;
    padding: 18px;
    border-radius: var(--radius-btn);
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font-cn);
    box-shadow: 0 4px 20px rgba(0,102,255,0.4);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,102,255,0.5);
}

.form-success {
    display: none;
    text-align: center;
    padding: 48px;
}

.form-success h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
}

.form-success p {
    color: var(--text-secondary);
    font-size: 16px;
}

/* ===================================
   响应式
=================================== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 140px 0 60px;
    }

    .hero-container {
        max-width: 100%;
        padding: 0 24px;
        text-align: center;
    }

    .hero-ctas {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        padding: 40px 24px 0;
    }

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

    .vs-divider {
        flex-direction: row;
        padding: 8px 0;
    }

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

    .pricing-cards {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto 32px;
    }

    .price-card-featured {
        transform: none;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(5,10,20,0.98);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--bg-card-border);
        backdrop-filter: blur(20px);
    }

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

    .hamburger {
        display: flex;
    }

    section {
        padding: 64px 0;
    }

    .demo-form {
        padding: 28px 20px;
    }

    .trust-badges {
        grid-template-columns: repeat(2, 1fr);
        padding: 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}