/* ==================== 基础重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #FF6B35;
    --primary-dark: #FF4757;
    --secondary: #F7931E;
    --accent: #FF8C42;
    --bg-dark: #0A0A0F;
    --bg-darker: #050508;
    --bg-card: #12121A;
    --bg-card-hover: #1A1A25;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0B2;
    --text-muted: #6B6B80;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 107, 53, 0.3);
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 50%, #FF4757 100%);
    --gradient-text: linear-gradient(135deg, #FF6B35 0%, #F7931E 40%, #FF4757 80%);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-card-hover: 0 8px 40px rgba(255, 107, 53, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* ==================== 通用组件 ==================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    margin-bottom: 80px;
    max-width: 680px;
}

.section-header.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 20px;
    padding: 6px 16px;
    border-radius: 100px;
    background: rgba(255, 107, 53, 0.1);
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: 100px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-small {
    padding: 10px 22px;
    font-size: 14px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-arrow {
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(0);
}

.navbar.scrolled {
    padding: 14px 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

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

.logo-text {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 24px;
}

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

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

/* ==================== Hero首屏 ==================== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: orbFloat 12s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #FF6B35 0%, transparent 70%);
    top: -150px;
    left: -100px;
}

.orb-2 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, #FF4757 0%, transparent 70%);
    bottom: -100px;
    right: -50px;
    animation-delay: -4s;
}

.orb-3 {
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, #F7931E 0%, transparent 70%);
    top: 40%;
    left: 45%;
    animation-delay: -8s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22C55E;
    border-radius: 50%;
    box-shadow: 0 0 12px #22C55E;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 28px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 44px;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 28px 36px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    max-width: fit-content;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-unit {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 560px;
}

.visual-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    position: absolute;
    backdrop-filter: blur(20px);
}

.main-card {
    width: 340px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 28px;
    animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, calc(-50% - 12px)); }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.card-avatar {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}

.card-title-group {
    flex: 1;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
}

.card-status {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: #22C55E;
    border-radius: 50%;
}

.analysis-item {
    margin-bottom: 18px;
}

.analysis-item:last-child {
    margin-bottom: 0;
}

.analysis-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.analysis-value {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
}

.analysis-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    border-radius: 100px;
    animation: barFill 1.5s ease-out forwards;
    transform-origin: left;
}

.bar-1 { background: linear-gradient(90deg, #FF6B35, #F7931E); }
.bar-2 { background: linear-gradient(90deg, #F7931E, #FF8C42); }
.bar-3 { background: linear-gradient(90deg, #FF8C42, #FF4757); }

@keyframes barFill {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.floating-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    font-size: 14px;
    font-weight: 600;
}

.floating-card svg {
    width: 20px;
    height: 20px;
}

.card-1 {
    top: 40px;
    right: 30px;
    animation: floatCard1 7s ease-in-out infinite;
}

.card-2 {
    bottom: 80px;
    right: 10px;
    animation: floatCard2 8s ease-in-out infinite;
}

.card-3 {
    bottom: 30px;
    left: 20px;
    animation: floatCard3 7.5s ease-in-out infinite;
}

@keyframes floatCard1 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

@keyframes floatCard2 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(12px); }
}

@keyframes floatCard3 {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 1px;
}

.scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    position: relative;
    overflow: hidden;
}

.scroll-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 16px;
    background: var(--primary);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: translateY(-16px); }
    100% { transform: translateY(48px); }
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-heading {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 28px;
}

.about-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 700;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.value-item {
    padding: 28px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

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

.value-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--radius-sm);
    color: var(--primary);
    margin-bottom: 18px;
}

.value-icon svg {
    width: 24px;
    height: 24px;
}

.value-item h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-item p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}

.about-visual {
    position: relative;
}

.about-image-card {
    aspect-ratio: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.08) 0%, rgba(255, 71, 87, 0.08) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.paw-pattern svg {
    width: 60%;
    height: auto;
}

.tech-tag {
    position: absolute;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    backdrop-filter: blur(10px);
}

.tag-1 { top: 32px; left: 32px; }
.tag-2 { top: 80px; right: 40px; }
.tag-3 { bottom: 48px; left: 60px; }

/* ==================== 核心平台 ==================== */
.platform-main {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.platform-visual {
    display: flex;
    justify-content: center;
    position: relative;
}

.phone-mockup {
    width: 320px;
    background: var(--bg-card);
    border-radius: 48px;
    padding: 14px;
    border: 1px solid var(--border);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: var(--bg-dark);
    border-radius: 20px;
    z-index: 2;
}

.phone-screen {
    background: linear-gradient(180deg, #1A1A25 0%, #0F0F17 100%);
    border-radius: 38px;
    padding: 60px 20px 24px;
    min-height: 580px;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.app-title {
    font-size: 20px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 107, 53, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.app-card.primary-card {
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.app-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.app-card-info {
    flex: 1;
    color: white;
}

.app-card-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.app-card-sub {
    font-size: 12px;
    opacity: 0.85;
}

.app-card-btn {
    padding: 10px 18px;
    background: white;
    color: var(--primary);
    font-weight: 700;
    font-size: 13px;
    border-radius: 100px;
    cursor: pointer;
    transition: transform 0.2s;
}

.app-card-btn:hover {
    transform: scale(1.05);
}

.app-section-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-left: 4px;
}

.course-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.course-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    cursor: pointer;
}

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

.course-badge {
    width: 32px;
    height: 32px;
    background: rgba(255, 107, 53, 0.15);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.course-info {
    flex: 1;
    min-width: 0;
}

.course-name {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.course-meta {
    font-size: 11px;
    color: var(--text-muted);
}

.course-arrow {
    color: var(--text-muted);
    font-size: 16px;
    flex-shrink: 0;
}

.platform-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.feature-card {
    padding: 32px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

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

.feature-number {
    font-size: 40px;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.6;
    margin-bottom: 16px;
    line-height: 1;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 6维数据 ==================== */
.sixdim {
    background: var(--bg-darker);
}

.sixdim-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 80px;
}

.dim-card {
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.dim-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 0.4s ease;
}

.dim-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: 0 16px 48px rgba(255, 107, 53, 0.12);
}

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

.dim-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: 28px;
    color: var(--primary);
}

.dim-1 .dim-icon { background: rgba(255, 107, 53, 0.1); color: #FF6B35; }
.dim-2 .dim-icon { background: rgba(247, 147, 30, 0.1); color: #F7931E; }
.dim-3 .dim-icon { background: rgba(255, 71, 87, 0.1); color: #FF4757; }
.dim-4 .dim-icon { background: rgba(255, 140, 66, 0.1); color: #FF8C42; }
.dim-5 .dim-icon { background: rgba(255, 107, 53, 0.1); color: #FF6B35; }
.dim-6 .dim-icon { background: rgba(247, 147, 30, 0.1); color: #F7931E; }

.dim-icon svg {
    width: 40px;
    height: 40px;
}

.dim-title {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 14px;
}

.dim-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.dim-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.dim-tags span {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 12px;
    color: var(--text-muted);
}

.data-flow {
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.flow-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 32px;
}

.flow-path {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.flow-node {
    padding: 14px 28px;
    background: rgba(255, 107, 53, 0.1);
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.flow-node:hover {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.05);
}

.flow-arrow {
    font-size: 24px;
    color: var(--primary);
    font-weight: 700;
}

/* ==================== 技术优势 ==================== */
.tech-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 24px;
}

.tech-card {
    padding: 36px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

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

.tech-card.large {
    grid-row: span 2;
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
}

.tech-visual {
    flex: 1;
    min-height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 32px;
}

.neural-network {
    position: relative;
    width: 100%;
    max-width: 300px;
    height: 200px;
}

.nn-layer {
    position: absolute;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.nn-layer.layer-1 {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

.nn-layer.layer-2 {
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.nn-layer.layer-3 {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.nn-node {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 0 16px rgba(255, 107, 53, 0.5);
    animation: nodePulse 3s ease-in-out infinite;
}

.nn-layer.layer-1 .nn-node:nth-child(1) { animation-delay: 0s; }
.nn-layer.layer-1 .nn-node:nth-child(2) { animation-delay: 0.2s; }
.nn-layer.layer-1 .nn-node:nth-child(3) { animation-delay: 0.4s; }
.nn-layer.layer-1 .nn-node:nth-child(4) { animation-delay: 0.6s; }
.nn-layer.layer-2 .nn-node:nth-child(1) { animation-delay: 0.3s; }
.nn-layer.layer-2 .nn-node:nth-child(2) { animation-delay: 0.5s; }
.nn-layer.layer-2 .nn-node:nth-child(3) { animation-delay: 0.7s; }
.nn-layer.layer-3 .nn-node:nth-child(1) { animation-delay: 0.4s; }
.nn-layer.layer-3 .nn-node:nth-child(2) { animation-delay: 0.6s; }

@keyframes nodePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

.nn-connections {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.tech-info h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 16px;
}

.tech-info > p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.tech-points {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tech-points li {
    font-size: 14px;
    color: var(--text-secondary);
    padding-left: 24px;
    position: relative;
}

.tech-points li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.tech-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--radius-md);
    color: var(--primary);
    margin-bottom: 24px;
}

.tech-icon svg {
    width: 26px;
    height: 26px;
}

.tech-card:not(.large) h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.tech-card:not(.large) p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ==================== 市场布局 ==================== */
.market {
    background: var(--bg-darker);
}

.market-main {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 80px;
    align-items: start;
    margin-bottom: 80px;
}

.market-stats {
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
}

.market-stat.big {
    padding-bottom: 36px;
    margin-bottom: 36px;
    border-bottom: 1px solid var(--border);
    text-align: center;
}

.market-number {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    line-height: 1;
    margin-bottom: 12px;
}

.market-number .num {
    font-size: 72px;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
}

.market-number .unit {
    font-size: 32px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.market-number.small .num {
    font-size: 40px;
    letter-spacing: -1px;
}

.market-label {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

.market-stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.market-stat-row .market-stat {
    text-align: center;
}

.market-stat-row .market-number {
    margin-bottom: 8px;
}

.market-stat-row .market-label {
    font-size: 13px;
    color: var(--text-muted);
}

.market-content h3 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.3;
}

.market-content > p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 36px;
}

.market-points {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.market-points li {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.market-points li:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.point-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 700;
}

.market-points strong {
    display: block;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.market-points p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

.vision-banner {
    padding: 60px;
    background:
        radial-gradient(ellipse at left top, rgba(255, 107, 53, 0.15) 0%, transparent 60%),
        radial-gradient(ellipse at right bottom, rgba(255, 71, 87, 0.15) 0%, transparent 60%),
        var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    flex-wrap: wrap;
}

.vision-text {
    flex: 1;
    min-width: 300px;
}

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

.vision-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.85;
    max-width: 600px;
}

.vision-tagline {
    flex-shrink: 0;
    padding: 20px 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    font-size: 18px;
    font-weight: 700;
    color: white;
    white-space: nowrap;
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.35);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border);
    padding: 80px 0 32px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 80px;
    padding-bottom: 60px;
    border-bottom: 1px solid var(--border);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    width: 44px;
    height: 44px;
}

.footer-logo span {
    font-size: 22px;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 48px;
}

.link-group h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.link-group ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.link-group a {
    font-size: 14px;
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.link-group a:hover {
    color: var(--primary);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
}

.contact-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

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

.footer-tags span {
    font-size: 13px;
    font-weight: 600;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

/* ==================== 滚动动画 ==================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 1100px) {
    .container,
    .nav-container,
    .hero-container {
        padding: 0 28px;
    }

    .section {
        padding: 100px 0;
    }

    .section-title {
        font-size: 40px;
    }

    .hero {
        min-height: auto;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-title {
        font-size: 52px;
    }

    .hero-visual {
        height: 500px;
        max-width: 500px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .platform-main {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .market-main {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .tech-card.large {
        grid-row: span 2;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    .container,
    .nav-container,
    .hero-container {
        padding: 0 20px;
    }

    .section {
        padding: 72px 0;
    }

    .section-header {
        margin-bottom: 56px;
    }

    .section-title {
        font-size: 32px;
    }

    .section-desc {
        font-size: 16px;
    }

    /* 导航栏 */
    .nav-menu,
    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* Hero */
    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        margin-bottom: 40px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 24px;
        padding: 28px;
        width: 100%;
    }

    .stat-divider {
        width: 48px;
        height: 1px;
    }

    .hero-visual {
        height: 440px;
    }

    .main-card {
        width: 290px;
        padding: 22px;
    }

    /* 关于我们 */
    .about-values {
        grid-template-columns: 1fr;
    }

    /* 核心平台 */
    .platform-features {
        grid-template-columns: 1fr;
    }

    .phone-mockup {
        width: 280px;
    }

    /* 6维数据 */
    .sixdim-grid {
        grid-template-columns: 1fr;
    }

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

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

    .data-flow {
        padding: 32px 20px;
    }

    /* 技术优势 */
    .tech-grid {
        grid-template-columns: 1fr;
    }

    .tech-card.large {
        grid-row: auto;
    }

    /* 市场 */
    .market-stats {
        padding: 32px 24px;
    }

    .market-number .num {
        font-size: 52px;
    }

    .market-number.small .num {
        font-size: 32px;
    }

    .market-stat-row {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .vision-banner {
        padding: 40px 28px;
        text-align: center;
    }

    .vision-tagline {
        margin: 0 auto;
        font-size: 15px;
        padding: 16px 24px;
    }

    /* 页脚 */
    .footer {
        padding: 56px 0 24px;
    }

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

    .contact-group {
        grid-column: span 2;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

    .section-title {
        font-size: 28px;
    }

    .about-heading,
    .market-content h3 {
        font-size: 24px;
    }

    .vision-text h3 {
        font-size: 22px;
    }

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

    .contact-group {
        grid-column: auto;
    }
}