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

:root {
    --primary-color: #0F172A;
    --secondary-color: #1E293B;
    --accent-color: #4F46E5;
    --accent-light: #818CF8;
    --accent-dark: #3730A3;
    --accent-warm: #F59E0B;
    --accent-success: #10B981;
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --gradient-ai: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-premium: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.18);
    --shadow-glow: 0 0 40px rgba(79, 70, 229, 0.15);
    --shadow-glow-hover: 0 0 60px rgba(79, 70, 229, 0.25);
}

/* 键盘焦点可见（不破坏现有 outline:none 的控件样式） */
:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 3px;
}

.cta-button:focus-visible,
.join-button:focus-visible,
.cert-button:focus-visible,
.mobile-menu-btn:focus-visible,
.back-to-top:focus-visible,
.chat-button:focus-visible,
.chat-send:focus-visible,
.quick-btn:focus-visible,
.nav-menu a:focus-visible,
.footer a:focus-visible,
.cross-links a:focus-visible {
    outline-offset: 3px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
                 'PingFang SC', 'Hiragino Sans GB', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ============================================
   SVG 图标系统（Lucide 风格，全站统一）
   ============================================ */
.icon {
    width: 1em;
    height: 1em;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    display: inline-block;
    vertical-align: -0.15em;
    flex-shrink: 0;
    pointer-events: none;
}
.icon-sm { width: 1em; height: 1em; stroke-width: 2.25; }
.icon-md { width: 1.25em; height: 1.25em; }
.icon-lg { width: 1.5em; height: 1.5em; }

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--gradient-ai);
    z-index: 9999;
    transition: width 0.1s ease;
    width: 0;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.5);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 60px;
    height: 60px;
    background: var(--gradient-ai);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.back-to-top:hover {
    transform: translateY(-6px) scale(1.05);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.back-to-top:active {
    transform: translateY(-3px) scale(1.02);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(30px);
    -webkit-backdrop-filter: saturate(180%) blur(30px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.8px;
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 48px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-ai);
    transition: width 0.3s ease;
}

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

.nav-menu a:hover {
    color: var(--accent-color);
}

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

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

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: white;
    min-width: 220px;
    box-shadow: var(--shadow-2xl);
    border-radius: 16px;
    padding: 8px;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.dropdown::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 8px;
    background: transparent;
}

@media (min-width: 1025px) and (hover: hover) {
    .dropdown:hover .dropdown-content {
        display: block;
        animation: fadeInDown 0.3s ease;
    }
}

@media (max-width: 1024px) {
    .dropdown:hover .dropdown-content {
        display: none;
    }

    .dropdown.active .dropdown-content {
        display: block;
        animation: fadeInDown 0.3s ease;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.dropdown-content a {
    display: block;
    padding: 12px 20px;
    font-size: 14px;
    border-radius: 8px;
    transition: all 0.2s;
}

.dropdown-content a::after {
    display: none;
}

.dropdown-content a:hover {
    background: var(--bg-tertiary);
    color: var(--accent-color);
}

/* Hero区域 */
.hero {
    margin-top: 64px;
    min-height: calc(100vh - 64px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        radial-gradient(ellipse at top, rgba(102, 126, 234, 0.06) 0%, rgba(255, 255, 255, 0) 50%),
        linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
    position: relative;
    overflow: hidden;
    padding: 100px 20px 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, transparent 70%);
    animation: rotate 40s linear infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to bottom, transparent, #ffffff);
    pointer-events: none;
}

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

.hero-content {
    max-width: 1600px;
    padding: 0 48px;
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 22px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
    border: 1.5px solid rgba(102, 126, 234, 0.3);
    border-radius: 100px;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.2px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.12);
}

.hero-badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
    animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2); }
    50% { box-shadow: 0 0 0 6px rgba(79, 70, 229, 0.12); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.hero-title {
    font-size: clamp(36px, 4vw + 1.25rem, 84px);
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 28px;
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.15;
    animation: fadeInUp 0.8s ease 0.1s both, gradient-shift 8s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

.hero-subtitle {
    font-size: clamp(17px, 1.5vw + 0.85rem, 26px);
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-weight: 400;
    letter-spacing: 0.3px;
    animation: fadeInUp 0.8s ease 0.2s both;
    line-height: 1.5;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    margin-bottom: 72px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-cta .cta-button.primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
}

.hero-cta .cta-button.primary .icon {
    font-size: 18px;
    transition: transform 0.3s ease;
}

.hero-cta .cta-button.primary:hover .icon {
    transform: translateX(4px);
}

.cta-button {
    padding: 20px 52px;
    font-size: 18px;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    border: none;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button.primary {
    background: var(--gradient-ai);
    color: white;
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.35);
}

.cta-button.primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.5);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.95) !important;
    color: #4F46E5 !important;
    border: 2.5px solid #4F46E5 !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
    transform: translateY(-3px) scale(1.02);
    background: var(--accent-color);
    color: white;
    box-shadow: 0 12px 35px rgba(79, 70, 229, 0.35);
}

/* Ghost 按钮 —— 文字为主，用于 Hero 次级行动 */
.cta-button.ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 20px 28px;
    font-size: 16px;
    font-weight: 500;
    box-shadow: none;
    position: relative;
}

.cta-button.ghost::after {
    content: '';
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 14px;
    height: 1.5px;
    background: currentColor;
    opacity: 0;
    transform: scaleX(0.6);
    transform-origin: center;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.cta-button.ghost:hover {
    color: var(--accent-color);
    transform: translateY(-1px);
}

.cta-button.ghost:hover::after {
    opacity: 1;
    transform: scaleX(1);
}

.cta-button.ghost::before {
    display: none;
}

.cta-button:active {
    transform: translateY(0);
}

.hero-stats {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    padding: 20px 48px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border: 1px solid rgba(102, 126, 234, 0.12);
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.08);
    animation: fadeInUp 0.8s ease 0.4s both;
}

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

.stat-mini-number {
    font-size: 34px;
    font-weight: 800;
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
    letter-spacing: -1px;
    line-height: 1.1;
}

.stat-mini-number span {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0;
}

.stat-mini-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.2px;
}

.stat-divider {
    width: 1px;
    height: 42px;
    background: linear-gradient(to bottom, transparent, rgba(102, 126, 234, 0.25), transparent);
}

.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    pointer-events: none;
}

.ai-circle {
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: var(--gradient-ai);
    opacity: 0.06;
    filter: blur(120px);
    animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        opacity: 0.06;
    }
    50% { 
        transform: scale(1.2);
        opacity: 0.08;
    }
}

/* 通用section样式 */
section {
    padding: 120px 48px;
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
}

section.hero {
    max-width: none;
    width: 100%;
}

.section-title {
    font-size: clamp(34px, 2.8vw + 1rem, 64px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    letter-spacing: -1px;
    line-height: 1.2;
    background: linear-gradient(135deg, #0F172A 0%, #475569 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: clamp(15px, 1vw + 0.8rem, 18px);
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 72px;
    font-weight: 400;
    line-height: 1.6;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

/* 六大运营面 */
.operations {
    background: var(--bg-secondary);
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

.operations::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 100vw;
    margin-left: -50vw;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234F46E5' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

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

.operation-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 52px 40px;
    border-radius: 28px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.operation-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-ai);
    transform: scaleX(0);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: left;
}

.operation-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top, rgba(79, 70, 229, 0.05), transparent 70%);
    opacity: 0;
    transition: opacity 0.5s ease;
}

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

.operation-card:hover::after {
    opacity: 1;
}

.operation-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1), 0 8px 20px rgba(79, 70, 229, 0.15);
    border-color: rgba(79, 70, 229, 0.2);
}

.card-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 28px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--accent-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
    border: 1px solid rgba(102, 126, 234, 0.15);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.08);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.operation-card:hover .card-icon {
    transform: scale(1.08) rotate(-3deg);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.22) 0%, rgba(118, 75, 162, 0.22) 100%);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.2);
}

.operation-card h3 {
    font-size: 26px;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.8px;
}

.operation-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* 会员体系 */
.membership {
    background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
    position: relative;
    box-shadow: 0 0 0 100vmax #fafafa;
    clip-path: inset(0 -100vmax);
}

.membership-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr 1fr;
    gap: 28px;
    max-width: 1320px;
    margin: 0 auto;
    align-items: center;
}

.membership-card {
    background: white;
    padding: 48px 40px;
    border-radius: 28px;
    text-align: left;
    position: relative;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1.5px solid rgba(0, 0, 0, 0.06);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

.membership-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #e5e7eb, #d1d5db);
    transition: all 0.5s ease;
}

.membership-card.basic::before {
    background: linear-gradient(90deg, #10b981, #059669);
}

.membership-card.enterprise::before {
    background: linear-gradient(90deg, #f59e0b, #d97706);
}

.membership-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 28px 60px rgba(15, 23, 42, 0.12);
    border-color: rgba(102, 126, 234, 0.2);
}

/* ========== PREMIUM 卡片 —— 强视觉主角 ========== */
.membership-card.premium {
    background:
        radial-gradient(circle at top right, rgba(167, 139, 250, 0.12) 0%, transparent 60%),
        linear-gradient(160deg, #ffffff 0%, #faf5ff 100%);
    border: 2px solid transparent;
    background-clip: padding-box;
    transform: scale(1.06);
    box-shadow:
        0 30px 70px -20px rgba(102, 126, 234, 0.35),
        0 0 0 1px rgba(102, 126, 234, 0.15);
    padding: 56px 44px;
    z-index: 2;
}

.membership-card.premium::before {
    height: 6px;
    background: var(--gradient-ai);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

/* 外发光描边 */
.membership-card.premium::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 28px;
    padding: 2px;
    background: var(--gradient-ai);
    -webkit-mask:
        linear-gradient(#000 0 0) content-box,
        linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
            mask-composite: exclude;
    pointer-events: none;
    opacity: 0.5;
}

.membership-card.premium:hover {
    transform: scale(1.06) translateY(-12px);
    box-shadow:
        0 40px 90px -20px rgba(102, 126, 234, 0.5),
        0 0 0 1px rgba(102, 126, 234, 0.25);
}

/* 丝带式推荐标签（右上角斜切） */
.ribbon {
    position: absolute;
    top: 0;
    right: 0;
    width: 130px;
    height: 130px;
    overflow: hidden;
    pointer-events: none;
    z-index: 3;
}

.ribbon span {
    position: absolute;
    top: 26px;
    right: -36px;
    transform: rotate(45deg);
    display: block;
    width: 170px;
    padding: 8px 0;
    background: var(--gradient-ai);
    color: white;
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 4px 14px rgba(102, 126, 234, 0.5);
}

/* 方案类型小标签（每张卡顶部的 eyebrow） */
.plan-tag {
    display: inline-block;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-radius: 100px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.membership-card.basic .plan-tag {
    color: #059669;
    background: rgba(16, 185, 129, 0.12);
}

.membership-card.premium .plan-tag {
    color: var(--accent-color);
    background: rgba(102, 126, 234, 0.15);
}

.membership-card.enterprise .plan-tag {
    color: #d97706;
    background: rgba(245, 158, 11, 0.12);
}

.membership-card h3 {
    font-size: 24px;
    margin-bottom: 4px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.membership-card.premium h3 {
    font-size: 28px;
}

.price-wrap {
    margin: 16px 0 32px;
    padding-bottom: 24px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.08);
}

.price {
    font-size: 44px;
    font-weight: 800;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
    line-height: 1;
    margin-bottom: 10px;
}

.membership-card.premium .price {
    font-size: 64px;
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -3px;
}

.membership-card.enterprise .price {
    font-size: 48px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price span {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    -webkit-text-fill-color: var(--text-secondary);
}

.price-note {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.1px;
}

.benefits {
    list-style: none;
    text-align: left;
    margin-bottom: 36px;
}

.benefits li {
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    line-height: 1.5;
}

.benefits li .icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    padding: 3px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.12);
    color: #059669;
    stroke-width: 3;
    margin-top: 1px;
}

.membership-card.premium .benefits li .icon {
    background: rgba(102, 126, 234, 0.15);
    color: var(--accent-color);
}

.membership-card.enterprise .benefits li .icon {
    background: rgba(245, 158, 11, 0.12);
    color: #d97706;
}

.service-provider {
    font-size: 11px;
    color: var(--accent-color);
    font-weight: 700;
    padding: 2px 8px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 100px;
    margin-left: 6px;
    white-space: nowrap;
}

.join-button {
    width: 100%;
    padding: 16px;
    background: white;
    color: var(--primary-color);
    border: 1.5px solid rgba(15, 23, 42, 0.12);
    border-radius: 14px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.2px;
}

.join-button:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 14px 28px -10px rgba(15, 23, 42, 0.35);
}

.membership-card.premium .join-button {
    background: var(--gradient-ai);
    color: white;
    border-color: transparent;
    box-shadow: 0 10px 28px -6px rgba(102, 126, 234, 0.55);
}

.membership-card.premium .join-button:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 16px 36px -6px rgba(102, 126, 234, 0.7);
}

/* 企业服务 */
.services {
    background: white;
}

.service-brand {
    margin-bottom: 64px;
}

.brand-intro {
    max-width: 1000px;
    margin: 0 auto;
}

.brand-highlight {
    background: linear-gradient(135deg, #faf5ff 0%, #f5f3ff 100%);
    padding: 40px 48px;
    border-radius: 24px;
    border: 2px solid rgba(99, 102, 241, 0.2);
}

.brand-highlight h3 {
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: 700;
    color: var(--accent-color);
}

.brand-highlight p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 96px;
}

.service-card {
    background: var(--bg-secondary);
    padding: 36px 28px;
    border-radius: 24px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-ai);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover::before {
    opacity: 0.03;
}

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

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--accent-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
    border: 1px solid rgba(102, 126, 234, 0.15);
    position: relative;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover .service-icon {
    transform: scale(1.06);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
}

.service-card h3 {
    font-size: 20px;
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
    position: relative;
    z-index: 1;
}

.service-card ul {
    list-style: none;
    position: relative;
    z-index: 1;
}

.service-card li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.service-link {
    display: inline-flex;
    align-items: center;
    margin-top: 20px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
    z-index: 1;
}

.service-link:hover {
    gap: 8px;
}

.service-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    text-align: center;
    padding: 64px 48px;
    background: var(--bg-secondary);
    border-radius: 32px;
}

.stat-item {
    padding: 0;
}

.stat-number {
    font-size: 64px;
    font-weight: 800;
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    letter-spacing: -2px;
    line-height: 1;
}

.stat-label {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--gradient-dark);
    color: white;
    padding: 80px 48px 40px;
}

.footer-content {
    max-width: 1600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 64px;
    margin-bottom: 64px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    line-height: 2;
    text-decoration: none;
    display: block;
    transition: all 0.2s;
}

.footer-section .contact-line {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section .contact-line .icon {
    font-size: 16px;
    color: var(--accent-light);
    stroke-width: 2;
    flex-shrink: 0;
}

.footer-section a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .operations-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .path-timeline {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .path-timeline::before {
        display: none;
    }
    
    .space-grid {
        grid-template-columns: 1fr;
    }
    
    .service-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1200px) {
    .membership-grid {
        grid-template-columns: 1fr;
        max-width: 520px;
        margin-left: auto;
        margin-right: auto;
        gap: 24px;
    }

    .membership-card.premium {
        transform: scale(1);
        order: -1;
    }

    .membership-card.premium:hover {
        transform: translateY(-12px);
    }
}

@media (max-width: 768px) {
    section {
        padding: 80px 24px;
    }
    
    .nav-container {
        padding: 0 24px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-2xl);
        gap: 0;
        max-height: calc(100vh - 64px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }
    
    .nav-menu li:last-child {
        border-bottom: none;
    }
    
    .nav-menu > li > a {
        display: block;
        padding: 16px 0;
    }
    
    .nav-menu a::after {
        display: none;
    }
    
    .dropdown-content {
        position: static;
        display: none;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0;
        margin-top: 8px;
        background: var(--bg-secondary);
        border-radius: 12px;
    }
    
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .dropdown-content a {
        padding: 12px 16px;
    }
    
    .hero {
        padding: 60px 24px;
        min-height: auto;
    }
    
    .hero-content {
        padding: 0 24px;
    }
    
    .hero-badge {
        font-size: 12px;
        padding: 8px 16px;
    }
    
    .hero-title {
        letter-spacing: -1.2px;
    }

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

    .hero-cta {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 48px;
    }

    .cta-button {
        width: 100%;
    }

    .cta-button.ghost {
        padding: 16px;
    }

    .hero-stats {
        gap: 20px;
        padding: 16px 24px;
        border-radius: 20px;
    }

    .stat-divider {
        height: 32px;
    }

    .stat-mini-number {
        font-size: 26px;
    }

    .stat-mini-number span {
        font-size: 14px;
    }

    .stat-mini-label {
        font-size: 12px;
    }
    
    .back-to-top {
        bottom: 24px;
        left: 24px;
        right: auto;
        width: 48px;
        height: 48px;
    }
    
    .section-title {
        letter-spacing: -0.8px;
    }
    
    .section-subtitle {
        font-size: 16px;
        margin-bottom: 48px;
    }
    
    .operations-grid,
    .membership-grid,
    .services-grid,
    .stories-grid,
    .path-timeline,
    .service-stats,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .membership-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .membership-card.premium {
        transform: scale(1);
        padding: 48px 40px;
    }

    .membership-card.premium:hover {
        transform: translateY(-12px);
    }

    .membership-card.premium .price {
        font-size: 52px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .cta-content h2 {
        font-size: 36px;
        letter-spacing: -1px;
    }
    
    .cta-content p {
        font-size: 18px;
    }
    
    .cta-buttons {
        flex-direction: column;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .cta-section {
        padding: 80px 24px;
    }
    
    .footer {
        padding: 60px 24px 30px;
    }
}

@media (min-width: 1920px) {
    .nav-container,
    section:not(.hero),
    .hero-content,
    .footer-content {
        max-width: 1800px;
    }
    
    .operations-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .stories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 超级个体故事 */
.stories {
    background: var(--bg-secondary);
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

.content-source {
    max-width: 1000px;
    margin: 0 auto 48px;
}

.source-note {
    background: white;
    padding: 32px 40px;
    border-radius: 20px;
    border: 2px solid rgba(99, 102, 241, 0.2);
    text-align: center;
}

.source-note p {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.source-note p .icon {
    color: #f59e0b;
    font-size: 22px;
    stroke-width: 2.25;
}

.source-types {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.source-types span {
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--accent-color);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
}

.stories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.story-card {
    background: white;
    border-radius: 28px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.story-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
}

.story-image {
    height: 180px;
    background: var(--gradient-ai);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* 不同故事用不同渐变色带，增加视觉层次 */
.story-image.story-gradient-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.story-image.story-gradient-2 {
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
}
.story-image.story-gradient-3 {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.story-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.story-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
    opacity: 0.6;
}

.story-placeholder {
    width: 88px;
    height: 88px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    color: white;
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.story-card:hover .story-placeholder {
    transform: scale(1.08) rotate(-3deg);
}

.story-content {
    padding: 36px;
}

.story-content h3 {
    font-size: 22px;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.3;
}

.story-excerpt {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.story-meta {
    display: flex;
    gap: 12px;
    align-items: center;
}

.story-tag {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    color: var(--accent-color);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

.story-time {
    color: var(--text-light);
    font-size: 13px;
    display: flex;
    align-items: center;
    font-weight: 500;
}

/* 学习成长路径 */
.learning-path {
    background: white;
}

.path-timeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    position: relative;
}

.path-timeline::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: var(--gradient-ai);
    z-index: 0;
    border-radius: 2px;
}

.path-step {
    position: relative;
    z-index: 1;
    background: var(--bg-secondary);
    padding: 36px 24px;
    border-radius: 24px;
    border: 2px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.path-step:hover {
    border-color: var(--accent-color);
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    background: white;
}

.step-number {
    width: 72px;
    height: 72px;
    background: var(--gradient-ai);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 800;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.path-step h3 {
    font-size: 20px;
    margin-bottom: 12px;
    text-align: center;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.path-step > p {
    color: var(--text-secondary);
    font-size: 14px;
    text-align: center;
    margin-bottom: 24px;
    line-height: 1.6;
}

.path-step ul {
    list-style: none;
}

.path-step li {
    padding: 10px 0;
    font-size: 13px;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
    line-height: 1.6;
}

.path-step li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    font-size: 16px;
}

/* 服务卡片增强 */
/* service-icon 统一样式已在上方定义 */

.service-link {
    display: inline-block;
    margin-top: 15px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.service-link:hover {
    transform: translateX(5px);
}

/* 服务覆盖区域 */
.coverage {
    background: var(--bg-secondary);
    text-align: center;
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

.coverage-map {
    max-width: 900px;
    margin: 0 auto;
}

.city-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
}

.city-tag {
    background: white;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 2px solid transparent;
}

.city-tag:hover {
    background: var(--gradient-ai);
    color: white;
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(99, 102, 241, 0.4);
    border-color: transparent;
}

.coverage-note {
    font-size: 20px;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.6;
}

/* 内链策略 - 板块间交叉推荐 */
.cross-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 20px 40px;
    background: linear-gradient(135deg, #f0f4ff, #f5f0ff);
    border-top: 1px solid rgba(102, 126, 234, 0.1);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    flex-wrap: wrap;
}

.cross-links-label {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.cross-links a {
    display: inline-block;
    padding: 6px 16px;
    font-size: 13px;
    color: #667eea;
    background: white;
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cross-links a:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 场地空间 */
.space {
    background: white;
}

.space-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 32px;
}

.space-card {
    background: var(--bg-secondary);
    border-radius: 32px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid rgba(0, 0, 0, 0.06);
}

.space-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
}

.space-card.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
    border: 2px solid var(--accent-color);
}

.space-image {
    height: 220px;
    background: var(--gradient-ai);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.space-image.space-gradient-1 {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}
.space-image.space-gradient-2 {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
}

.space-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.18) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.space-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 32px 32px;
}

.space-placeholder {
    width: 96px;
    height: 96px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: white;
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.space-card:hover .space-placeholder {
    transform: scale(1.06) rotate(-3deg);
}

.space-card h3 {
    font-size: 32px;
    margin: 36px 36px 12px;
    font-weight: 800;
    letter-spacing: -1px;
}

.space-location {
    color: var(--text-secondary);
    font-size: 16px;
    margin: 0 36px 28px;
    font-weight: 500;
}

.space-features {
    list-style: none;
    padding: 0 36px 36px;
}

.space-features li {
    padding: 14px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.space-features li:last-child {
    border-bottom: none;
}

.space-features li:before {
    content: "✓";
    color: var(--accent-color);
    font-weight: bold;
    font-size: 18px;
    flex-shrink: 0;
}

/* CTA区域 */
.cta-section {
    background: var(--gradient-ai);
    color: white;
    text-align: center;
    padding: 120px 48px;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 56px;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.2;
}

.cta-content p {
    font-size: 24px;
    margin-bottom: 48px;
    opacity: 0.95;
    font-weight: 400;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta-button.primary {
    background: white;
    color: var(--accent-color);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.cta-button.primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.cta-button.secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
    box-shadow: none;
}

.cta-button.secondary:hover {
    background: white;
    color: var(--accent-color);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* 响应式更新 */
@media (max-width: 1024px) {
    .stories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .path-timeline {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .path-timeline::before {
        display: none;
    }
    
    .space-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .stories-grid,
    .path-timeline {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 32px;
    }
    
    .cta-content p {
        font-size: 18px;
    }
    
    .cta-buttons {
        flex-direction: column;
        max-width: 300px;
        margin: 0 auto;
    }
}

/* 商单任务池 */
.tasks {
    background: var(--bg-secondary);
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

.tasks-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.task-card {
    background: #fff;
    padding: 32px 28px;
    border-radius: 24px;
    border: 2px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.task-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.task-card.beginner {
    border-color: #10b981;
}

.task-card.intermediate {
    border-color: #3b82f6;
}

.task-card.advanced {
    border-color: #8b5cf6;
}

.task-card.special {
    border-color: #f59e0b;
}

.task-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.task-card.beginner .task-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.task-card.intermediate .task-badge {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.task-card.advanced .task-badge {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.task-card.special .task-badge {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.task-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    font-weight: 700;
}

.task-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 24px;
}

.task-requirements {
    list-style: none;
    margin-bottom: 20px;
}

.task-requirements li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.task-requirements li::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    flex-shrink: 0;
}

.task-stats {
    padding-top: 16px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 13px;
    color: var(--text-secondary);
}

.task-stats span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.task-stats .icon {
    color: #f59e0b;
    font-size: 14px;
    stroke-width: 2.25;
    fill: rgba(245, 158, 11, 0.15);
}

.task-stats-muted {
    font-size: 12px;
    color: var(--text-light);
    border-top-color: rgba(15, 23, 42, 0.05);
}

.task-stats-muted .icon {
    opacity: 0.75;
}

.task-process {
    background: #fff;
    padding: 48px;
    border-radius: 24px;
    text-align: center;
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: var(--shadow-md);
}

.task-process h3 {
    font-size: 28px;
    margin-bottom: 40px;
    font-weight: 700;
}

.process-steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
}

.process-step {
    text-align: center;
}

.process-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-ai);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    margin: 0 auto 16px;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.process-step p {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.process-arrow {
    font-size: 24px;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-arrow .icon {
    stroke-width: 2.5;
}

/* 能力认证体系 */
.certification {
    background: var(--bg-secondary);
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

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

.cert-card {
    background: white;
    padding: 36px 28px;
    border-radius: 24px;
    border: 2px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
}

.cert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.cert-card.featured {
    background: linear-gradient(135deg, #faf5ff 0%, #f5f3ff 100%);
    border-color: var(--accent-color);
}

.cert-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    color: var(--accent-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.12) 0%, rgba(118, 75, 162, 0.12) 100%);
    border: 1px solid rgba(102, 126, 234, 0.15);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cert-card.featured .cert-icon {
    background: var(--gradient-ai);
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.35);
}

.cert-card:hover .cert-icon {
    transform: scale(1.06) rotate(-3deg);
}

.cert-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 700;
}

.cert-desc {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.cert-benefits {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.cert-benefits li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.cert-benefits li::before {
    content: "✓";
    color: var(--accent-color);
    font-weight: bold;
    flex-shrink: 0;
}

.cert-button {
    width: 100%;
    padding: 14px;
    background: white;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 12px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.cert-button:hover {
    background: var(--accent-color);
    color: white;
}

.cert-button.primary {
    background: var(--gradient-ai);
    color: white;
    border: none;
}

.cert-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

/* 合伙人体系 */
.partners {
    background: white;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.partner-card {
    background: var(--bg-secondary);
    padding: 40px 36px;
    border-radius: 28px;
    border: 2px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.partner-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
}

.partner-card.featured {
    background: linear-gradient(135deg, #faf5ff 0%, #f5f3ff 100%);
    border: 2px solid var(--accent-color);
    transform: scale(1.05);
}

.partner-card.featured:hover {
    transform: scale(1.05) translateY(-12px);
}

.partner-level {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-ai);
    color: white;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
}

.partner-card h3 {
    font-size: 26px;
    margin-bottom: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.partner-requirements,
.partner-benefits {
    margin-bottom: 24px;
}

.partner-requirements h4,
.partner-benefits h4 {
    font-size: 16px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.partner-requirements ul,
.partner-benefits ul {
    list-style: none;
}

.partner-requirements li,
.partner-benefits li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.6;
}

.partner-requirements li::before {
    content: "•";
    color: var(--text-secondary);
    font-weight: bold;
    flex-shrink: 0;
}

.partner-benefits li::before {
    content: "✓";
    color: var(--accent-color);
    font-weight: bold;
    flex-shrink: 0;
}

/* 响应式更新 - 新板块 */
@media (max-width: 1024px) {
    .tasks-grid,
    .certification-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tasks-grid,
    .certification-grid,
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 24px;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .partner-card.featured {
        transform: scale(1);
    }
    
    .partner-card.featured:hover {
        transform: translateY(-12px);
    }
}

/* 服务详情页 */
.service-detail {
    background: white;
    padding: 120px 48px;
}

.service-detail.alt {
    background: var(--bg-secondary);
    position: relative;
    box-shadow: 0 0 0 100vmax var(--bg-secondary);
    clip-path: inset(0 -100vmax);
}

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

.detail-card {
    background: white;
    padding: 36px 28px;
    border-radius: 24px;
    border: 2px solid rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-detail.alt .detail-card {
    background: white;
}

.detail-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}

.detail-card h3 {
    font-size: 22px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.detail-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.detail-card ul {
    list-style: none;
}

.detail-card li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.detail-card li::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    flex-shrink: 0;
}

/* 响应式 - 服务详情 */
@media (max-width: 1024px) {
    .detail-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .service-detail {
        padding: 80px 24px;
    }
}

/* 按钮波纹效果 */
button, .cta-button {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 页面加载动画 */
body:not(.loaded) {
    opacity: 0;
}

body.loaded {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选中文本样式 */
::selection {
    background: rgba(99, 102, 241, 0.2);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(99, 102, 241, 0.2);
    color: var(--text-primary);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

/* Footer优化 */
.footer-slogan {
    font-style: italic;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 8px;
}

.social-links {
    display: flex;
    gap: 16px;
    margin-top: 20px;
}

.social-links a {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.9);
    font-size: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-links a:hover {
    background: var(--gradient-ai);
    border-color: transparent;
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(102, 126, 234, 0.4);
}

.icp {
    margin-top: 12px;
    font-size: 13px;
}

.icp a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.2s;
}

.icp a:hover {
    color: rgba(255, 255, 255, 0.9);
}

/* 在线咨询浮窗 */
.chat-widget {
    position: fixed;
    bottom: 110px;
    right: 40px;
    z-index: 999;
}

.chat-button {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-ai);
    border: none;
    color: white;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    animation: pulse-chat 3s ease-in-out infinite;
}

@keyframes pulse-chat {
    0%, 100% {
        box-shadow: 0 10px 30px rgba(102, 126, 234, 0.45);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 15px 45px rgba(102, 126, 234, 0.65);
        transform: scale(1.05);
    }
}

.chat-button:hover {
    transform: scale(1.15);
    box-shadow: 0 15px 45px rgba(102, 126, 234, 0.7);
}

.chat-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.chat-panel {
    position: absolute;
    bottom: 85px;
    right: 0;
    width: 380px;
    height: 520px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.08);
}

.chat-panel.active {
    display: flex;
    animation: slideInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.chat-header {
    background: var(--gradient-ai);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: var(--bg-secondary);
}

.chat-message {
    margin-bottom: 16px;
    padding: 12px 16px;
    border-radius: 12px;
    max-width: 80%;
}

.chat-message.bot {
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.chat-message p {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
}

.chat-message p + p {
    margin-top: 8px;
}

.quick-questions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}

.quick-btn {
    background: white;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.quick-btn:hover {
    background: var(--accent-color);
    color: white;
}

.chat-footer {
    padding: 16px;
    background: white;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 8px;
}

.chat-input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
}

.chat-input:focus {
    border-color: var(--accent-color);
}

.chat-send {
    padding: 10px 20px;
    background: var(--gradient-ai);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.chat-send:hover {
    transform: translateY(-2px);
}

/* 移动端优化 */
@media (max-width: 768px) {
    .chat-widget {
        bottom: 80px;
        right: 20px;
    }
    
    .chat-button {
        width: 56px;
        height: 56px;
    }
    
    .chat-panel {
        width: calc(100vw - 40px);
        right: -20px;
        height: 450px;
    }
    
    .social-links {
        justify-content: flex-start;
    }
}


/* ========== 额外的UI增强效果 ========== */

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选中文本样式 */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.3);
    color: var(--text-primary);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #764ba2 0%, #667eea 100%);
}

/* 链接悬停效果增强 */
a {
    position: relative;
    text-decoration: none;
    color: inherit;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-ai);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

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

/* 按钮点击波纹效果 */
@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 卡片光泽效果 */
.operation-card::after,
.membership-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    bottom: -50%;
    left: -50%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transform: rotateZ(60deg) translate(-5em, 7.5em);
    opacity: 0;
    transition: opacity 0.5s;
}

.operation-card:hover::after,
.membership-card:hover::after {
    opacity: 1;
    animation: shine 1.5s ease-in-out;
}

@keyframes shine {
    0% {
        transform: rotateZ(60deg) translate(-5em, 7.5em);
    }
    100% {
        transform: rotateZ(60deg) translate(5em, -7.5em);
    }
}

/* 加载动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

body {
    animation: fadeIn 0.5s ease-in;
}

/* 图片加载效果 */
img {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

img:hover {
    transform: scale(1.02);
}

/* 输入框焦点效果 */
input:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.chat-input:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* 按钮禁用状态 */
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* 工具提示样式 */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    font-size: 12px;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
}

[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

/* 加载骨架屏效果 */
@keyframes skeleton-loading {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200px 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

/* 渐变文字效果 */
.gradient-text {
    background: var(--gradient-ai);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 玻璃态效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* 悬浮动画 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

/* 打字机效果 */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

/* 聚焦效果 */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

/* 卡片翻转效果 */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

/* 脉冲边框效果 */
@keyframes pulse-border {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(102, 126, 234, 0);
    }
}

.pulse-border {
    animation: pulse-border 2s ease-in-out infinite;
}

/* 渐变边框效果 */
.gradient-border {
    position: relative;
    background: white;
    border-radius: 16px;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 16px;
    padding: 2px;
    background: var(--gradient-ai);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* 文字闪烁效果 */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer-text {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #667eea 100%);
    background-size: 1000px 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

/* 3D卡片效果 */
.card-3d {
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.card-3d:hover {
    transform: rotateY(5deg) rotateX(5deg);
}

/* 磁性按钮效果 */
.magnetic-button {
    transition: transform 0.2s ease;
}

/* 彩虹加载条 */
@keyframes rainbow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.rainbow-loader {
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #667eea);
    background-size: 200% 200%;
    animation: rainbow 3s ease infinite;
}

/* 响应式字体大小 */
@media (max-width: 1920px) {
    html {
        font-size: 16px;
    }
}

@media (max-width: 1440px) {
    html {
        font-size: 15px;
    }
}

@media (max-width: 1024px) {
    html {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 13px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .hero::before,
    .hero-title,
    .ai-circle,
    .hero-badge-dot,
    .chat-button,
    .chat-badge,
    .scroll-progress {
        animation: none !important;
    }

    .back-to-top.visible {
        animation: none;
    }
}