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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #a855f7;
    --accent: #06b6d4;
    --pink: #ec4899;
    --orange: #f59e0b;
    --red: #ef4444;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --border: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-3: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-4: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.logo-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    letter-spacing: 0.5px;
}

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

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    border-radius: 8px;
    transition: all 0.25s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.08);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

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

/* ===== Hero 区 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 60px;
    background: linear-gradient(180deg, #fafbff 0%, #ffffff 100%);
}

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

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #6366f1, transparent 70%);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #ec4899, transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #06b6d4, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 30px) scale(0.9); }
}

.grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-2 {
    background: var(--gradient-4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 8px 24px rgba(168, 85, 247, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(168, 85, 247, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--text);
    border: 1.5px solid var(--border);
}

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

.hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px 24px;
    background: white;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    max-width: 480px;
}

.meta-item {
    flex: 1;
    text-align: center;
}

.meta-num {
    display: block;
    font-size: 24px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.meta-label {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
    font-weight: 500;
}

.meta-divider {
    width: 1px;
    height: 30px;
    background: var(--border);
}

/* ===== Hero 手机模型 ===== */
.hero-visual {
    position: relative;
    animation: fadeInUp 1s ease 0.3s backwards;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
    animation: floatPhone 6s infinite ease-in-out;
}

@keyframes floatPhone {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-15px) rotate(0deg); }
}

.phone-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    background: var(--gradient-1);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    z-index: -1;
    animation: pulse 4s infinite ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.6; }
}

.phone-frame {
    width: 280px;
    height: 570px;
    background: #1a1a1a;
    border-radius: 42px;
    padding: 12px;
    box-shadow: 0 25px 70px rgba(0,0,0,0.3), inset 0 0 0 2px #2a2a2a;
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: #1a1a1a;
    border-radius: 100px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fafafa;
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.phone-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px 4px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text);
}

.phone-status span:last-child {
    letter-spacing: 2px;
    font-size: 10px;
}

.app-screenshot {
    padding: 0 12px;
    height: calc(100% - 30px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.app-logo-mini {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 14px;
}

.mini-logo-dot {
    width: 20px;
    height: 20px;
    background: var(--gradient);
    border-radius: 6px;
}

.app-header-icons span {
    font-size: 14px;
}

.app-banner {
    height: 95px;
    background: var(--gradient-1);
    border-radius: 14px;
    padding: 14px;
    color: white;
    position: relative;
    overflow: hidden;
    margin-bottom: 12px;
}

.app-banner::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
}

.app-banner::after {
    content: '';
    position: absolute;
    bottom: -30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
}

.banner-content h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    position: relative;
}

.banner-content p {
    font-size: 11px;
    opacity: 0.9;
    position: relative;
}

.app-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: #f0f0f3;
    border-radius: 10px;
    margin-bottom: 12px;
}

.app-tab {
    flex: 1;
    padding: 6px 0;
    text-align: center;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-light);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.app-tab.active {
    background: white;
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

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

.gi-inner {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 4px;
}

.gi-1 { background: linear-gradient(135deg, #6366f1, #a855f7); }
.gi-2 { background: linear-gradient(135deg, #06b6d4, #3b82f6); }
.gi-3 { background: linear-gradient(135deg, #f59e0b, #ef4444); }
.gi-4 { background: linear-gradient(135deg, #ec4899, #a855f7); }

.gi-name {
    font-size: 9px;
    color: var(--text);
    font-weight: 500;
}

.app-section {
    margin-top: 4px;
}

.section-title-mini {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
}

.section-title-mini .more {
    font-size: 10px;
    color: var(--text-light);
    font-weight: 400;
}

.works-list {
    display: flex;
    gap: 8px;
}

.work-item {
    flex: 1;
}

.work-thumb {
    width: 100%;
    height: 70px;
    border-radius: 10px;
    margin-bottom: 4px;
}

.wt-1 {
    background: linear-gradient(135deg, #6366f1, #ec4899);
}

.wt-2 {
    background: linear-gradient(135deg, #06b6d4, #6366f1);
}

.work-title {
    font-size: 9px;
    color: var(--text);
}

/* 浮动气泡 */
.float-bubble {
    position: absolute;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-lg);
    animation: floatBubble 5s infinite ease-in-out;
}

.fb-1 {
    top: 8%;
    left: -20px;
    animation-delay: 0s;
}

.fb-2 {
    top: 40%;
    right: -25px;
    animation-delay: -2s;
}

.fb-3 {
    bottom: 12%;
    left: 0;
    animation-delay: -3.5s;
}

@keyframes floatBubble {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-12px) scale(1.05); }
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 12px;
    animation: bounce 2s infinite;
}

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

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-light);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--text-light);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

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

/* ===== Section 通用 ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 900;
    line-height: 1.2;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
}

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

/* ===== 核心功能 ===== */
.services {
    padding: 100px 0;
    background: var(--bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.service-card {
    position: relative;
    background: white;
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 36px 32px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:nth-child(2)::before {
    background: var(--gradient-2);
}

.service-card:nth-child(3)::before {
    background: var(--gradient-3);
}

.service-card:nth-child(4)::before {
    background: var(--gradient-4);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-card.featured {
    background: linear-gradient(135deg, #fafbff 0%, #ffffff 100%);
    border-color: rgba(99, 102, 241, 0.2);
}

.service-card.featured::before {
    transform: scaleX(1);
}

.featured-tag {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 100px;
    letter-spacing: 0.5px;
}

.service-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 18px;
    transition: all 0.3s ease;
}

.service-icon svg {
    width: 36px;
    height: 36px;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
}

.service-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

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

/* ===== 作品展示 ===== */
.showcase {
    padding: 100px 0;
    background: var(--bg-alt);
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 250px);
    gap: 24px;
}

.showcase-card {
    position: relative;
    background: white;
    border-radius: 24px;
    padding: 28px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.showcase-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.sc-large {
    grid-row: span 2;
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    color: white;
    border-color: transparent;
}

.sc-wide {
    grid-column: span 2;
    background: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
    color: white;
    border-color: transparent;
}

.sc-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,255,255,0.2);
    color: white;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 12px;
    width: fit-content;
}

.sc-tag.tag-cyan { background: var(--gradient-2); }
.sc-tag.tag-orange { background: var(--gradient-3); }
.sc-tag.tag-pink { background: rgba(255,255,255,0.25); }

.sc-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.sc-large .sc-content h3,
.sc-wide .sc-content h3 {
    font-size: 26px;
}

.sc-content p {
    font-size: 14px;
    opacity: 0.85;
    margin-bottom: 16px;
    line-height: 1.6;
}

.sc-large .sc-content p,
.sc-wide .sc-content p {
    font-size: 15px;
}

.sc-stats {
    display: flex;
    gap: 16px;
    font-size: 13px;
    opacity: 0.9;
}

.sc-btn {
    display: inline-block;
    margin-top: 12px;
    padding: 8px 20px;
    background: white;
    color: var(--primary);
    border-radius: 100px;
    font-weight: 600;
    font-size: 13px;
    transition: all 0.3s ease;
}

.sc-btn:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.sc-visual {
    position: absolute;
    width: 140px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sc-large .sc-visual {
    width: 180px;
    height: 180px;
}

.scv-1 {
    bottom: -30px;
    right: -30px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
}

.scv-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

.scv-circle.c1 {
    width: 100%;
    height: 100%;
    animation: pulseCircle 4s infinite ease-in-out;
}

.scv-circle.c2 {
    width: 60%;
    height: 60%;
    background: rgba(255,255,255,0.15);
    animation: pulseCircle 4s infinite ease-in-out 1s;
}

@keyframes pulseCircle {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.scv-icon {
    font-size: 60px;
    z-index: 2;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.2));
}

.sc-large .scv-icon {
    font-size: 80px;
}

.scv-2 {
    top: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    background: var(--gradient-2);
    border-radius: 20px;
    font-size: 36px;
}

.scv-3 {
    top: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    background: var(--gradient-3);
    border-radius: 20px;
    font-size: 36px;
}

.scv-4 {
    top: 50%;
    right: 30px;
    transform: translateY(-50%);
    width: 160px;
    height: 160px;
}

.scv-icons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
    height: 100%;
}

.scv-icons-grid span {
    background: rgba(255,255,255,0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: all 0.3s ease;
    animation: floatSmall 3s infinite ease-in-out;
}

.scv-icons-grid span:nth-child(2) { animation-delay: 0.3s; }
.scv-icons-grid span:nth-child(3) { animation-delay: 0.6s; }
.scv-icons-grid span:nth-child(4) { animation-delay: 0.9s; }
.scv-icons-grid span:nth-child(5) { animation-delay: 1.2s; }
.scv-icons-grid span:nth-child(6) { animation-delay: 1.5s; }

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

/* ===== 关于 ===== */
.about {
    padding: 100px 0;
    background: var(--bg-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-tag,
.about-content .section-title {
    text-align: left;
}

.about-content .section-title {
    margin-bottom: 24px;
}

.about-text {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.stat-item {
    text-align: left;
    position: relative;
}

.stat-num {
    font-size: 42px;
    font-weight: 900;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    display: inline-block;
}

.stat-suffix {
    display: inline-block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-left: 2px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 8px;
    font-weight: 500;
}

.about-visual {
    position: relative;
    height: 480px;
}

.about-card-stack {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-card {
    position: absolute;
    background: white;
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--shadow);
    width: 200px;
    border: 1px solid var(--border);
    animation: floatCard 6s infinite ease-in-out;
    transition: transform 0.3s ease;
}

.floating-card:hover {
    transform: translateY(-5px) scale(1.05);
}

.fc-1 {
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.fc-2 {
    top: 80px;
    right: 0;
    animation-delay: -1.5s;
}

.fc-3 {
    bottom: 80px;
    left: 40px;
    animation-delay: -3s;
}

.fc-4 {
    bottom: 0;
    right: 20px;
    animation-delay: -4.5s;
}

.fc-icon {
    font-size: 28px;
    margin-bottom: 12px;
}

.fc-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.fc-desc {
    font-size: 13px;
    color: var(--text-light);
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ===== 联系我们 ===== */
.contact {
    padding: 100px 0;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent 70%);
    border-radius: 50%;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    position: relative;
}

.contact-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.4s ease;
    display: block;
    cursor: pointer;
}

a.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.contact-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all 0.3s ease;
}

.contact-icon svg {
    width: 30px;
    height: 30px;
}

a.contact-card:hover .contact-icon {
    background: var(--gradient);
    color: white;
    transform: scale(1.1);
}

.contact-label {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.contact-value {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.6;
    word-break: break-all;
}

/* ===== 页脚 ===== */
.footer {
    background: #0f172a;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 15px;
    line-height: 1.7;
    max-width: 380px;
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    color: white;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-col a:hover {
    color: white;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

.footer-bottom .beian {
    margin-top: 8px;
}

.footer-bottom .beian a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom .beian a:hover {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom .beian-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ===== 会员套餐 ===== */
.pricing {
    padding: 120px 0;
    background: linear-gradient(180deg, #fafbff 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.pricing::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.pricing::after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.pricing .container {
    position: relative;
    z-index: 1;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.pricing-card {
    position: relative;
    background: #ffffff;
    border-radius: 20px;
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
}

.pricing-card.featured {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    border: none;
    color: #ffffff;
    transform: scale(1.04);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3);
}

.pricing-card.featured:hover {
    transform: scale(1.04) translateY(-8px);
    box-shadow: 0 30px 70px rgba(168, 85, 247, 0.4);
}

.pricing-card.premium {
    background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 50%, #f3e8ff 100%);
    border: 1px solid rgba(236, 72, 153, 0.2);
}

.pricing-card.premium:hover {
    border-color: rgba(236, 72, 153, 0.4);
    box-shadow: 0 20px 50px rgba(236, 72, 153, 0.15);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.pricing-badge.premium-badge {
    background: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.4);
}

.pricing-header {
    text-align: center;
    margin-bottom: 28px;
}

.pricing-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: rgba(99, 102, 241, 0.08);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-icon svg {
    width: 36px;
    height: 36px;
}

.pricing-card.featured .pricing-icon {
    background: rgba(255, 255, 255, 0.1);
}

.pricing-card.premium .pricing-icon {
    background: rgba(236, 72, 153, 0.12);
}

.pricing-name {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
}

.pricing-card.featured .pricing-name {
    color: #ffffff;
}

.pricing-tagline {
    font-size: 13px;
    color: var(--text-light);
    margin: 0;
}

.pricing-card.featured .pricing-tagline {
    color: rgba(255, 255, 255, 0.7);
}

.pricing-price {
    text-align: center;
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 1px dashed var(--border);
    position: relative;
}

.pricing-card.featured .pricing-price {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.pricing-price .currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    vertical-align: top;
    line-height: 1;
    margin-right: 2px;
}

.pricing-price .amount {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.pricing-card.featured .pricing-price .amount,
.pricing-card.featured .pricing-price .currency {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-card.premium .pricing-price .amount {
    background: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-price .period {
    font-size: 14px;
    color: var(--text-light);
    margin-left: 4px;
}

.pricing-card.featured .pricing-price .period {
    color: rgba(255, 255, 255, 0.6);
}

.pricing-price .original-price {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 13px;
    color: var(--text-light);
    text-decoration: line-through;
}

.pricing-card.featured .pricing-price .original-price {
    color: rgba(255, 255, 255, 0.5);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px 0;
    flex-grow: 1;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text);
    line-height: 1.5;
}

.pricing-card.featured .pricing-features li {
    color: rgba(255, 255, 255, 0.9);
}

.pricing-features li.disabled {
    color: #cbd5e1;
    text-decoration: line-through;
}

.pricing-features li .check {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.pricing-card.featured .pricing-features li .check {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.pricing-features li .cross {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: rgba(203, 213, 225, 0.3);
    color: #94a3b8;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
}

.pricing-btn {
    width: 100%;
    padding: 14px 24px;
    border: 1.5px solid var(--primary);
    background: transparent;
    color: var(--primary);
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.pricing-btn:hover {
    background: var(--primary);
    color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.pricing-btn.primary {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    color: #ffffff;
    border: none;
}

.pricing-btn.primary:hover {
    box-shadow: 0 10px 25px rgba(239, 68, 68, 0.4);
}

.pricing-btn.premium-btn {
    background: linear-gradient(135deg, #ec4899 0%, #a855f7 100%);
    color: #ffffff;
    border: none;
}

.pricing-btn.premium-btn:hover {
    box-shadow: 0 10px 25px rgba(236, 72, 153, 0.4);
}

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

.pricing-btn:hover svg {
    transform: translateX(3px);
}

/* ===== 支付弹窗 ===== */
.payment-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.payment-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.payment-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.payment-dialog {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    background: #ffffff;
    border-radius: 24px;
    padding: 36px 32px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.25);
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.payment-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: #f3f4f6;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.payment-close:hover {
    background: #e5e7eb;
    color: var(--text);
    transform: rotate(90deg);
}

.payment-header {
    text-align: center;
    margin-bottom: 28px;
}

.payment-icon-wrap {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.payment-icon-wrap svg {
    width: 36px;
    height: 36px;
}

.payment-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 6px 0;
}

.payment-subtitle {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.payment-order {
    background: linear-gradient(135deg, #fafbff 0%, #f5f3ff 100%);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 24px;
}

.order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.order-row.total {
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.order-label {
    font-size: 14px;
    color: var(--text-light);
}

.order-value {
    font-size: 14px;
    color: var(--text);
    font-weight: 600;
}

.order-row.total .price-value {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.order-row.total .price-symbol {
    font-size: 16px;
    font-weight: 700;
    margin-right: 2px;
}

.payment-methods {
    margin-bottom: 24px;
}

.methods-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 12px 0;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.method-item {
    position: relative;
    cursor: pointer;
    background: #ffffff;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.method-item input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

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

.method-item.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.04) 0%, rgba(168, 85, 247, 0.04) 100%);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.15);
}

.method-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.method-icon.wechat {
    background: rgba(7, 193, 96, 0.1);
    color: #07c160;
}

.method-icon.alipay {
    background: rgba(22, 119, 255, 0.1);
    color: #1677ff;
}

.method-icon.unionpay {
    background: rgba(229, 75, 75, 0.1);
    color: #e54b4b;
}

.method-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.payment-btn {
    width: 100%;
    padding: 16px;
    background: var(--gradient);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.payment-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(99, 102, 241, 0.4);
}

.payment-btn:active {
    transform: translateY(0);
}

.payment-tip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 16px 0 0 0;
    font-size: 13px;
    color: #f59e0b;
    text-align: center;
}

.payment-tip svg {
    flex-shrink: 0;
}


/* ===== 滚动动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons,
    .hero-meta {
        justify-content: center;
        margin-left: auto;
        margin-right: auto;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .showcase-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    .sc-large,
    .sc-wide {
        grid-column: auto;
        grid-row: auto;
        min-height: 280px;
    }
    .sc-visual {
        width: 100px;
        height: 100px;
    }
    .sc-large .sc-visual {
        width: 120px;
        height: 120px;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-content .section-tag,
    .about-content .section-title {
        text-align: center;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pricing-card.featured {
        transform: none;
    }
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
}

@media (max-width: 640px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }
    .nav-menu.active {
        transform: translateY(0);
    }
    .nav-link {
        padding: 12px 16px;
    }
    .menu-toggle {
        display: flex;
    }
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 5px);
    }
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -5px);
    }
    .phone-mockup {
        width: 240px;
    }
    .phone-frame {
        width: 240px;
        height: 490px;
        border-radius: 36px;
    }
    .hero-meta {
        gap: 12px;
        padding: 14px 16px;
    }
    .meta-num {
        font-size: 20px;
    }
    .stats {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
    }
    .stat-item {
        text-align: center;
    }
    .floating-card {
        width: 160px;
        padding: 16px;
    }
    .fc-3 {
        left: 10px;
    }
    .float-bubble {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .pricing {
        padding: 80px 0;
    }
    .payment-dialog {
        padding: 28px 24px;
    }
    .methods-grid {
        grid-template-columns: 1fr;
    }
}