/* ============================================
   青灵鹿 - Product-Led SaaS Style
   ============================================ */

:root {
    /* Brand Colors - Cyan */
    --cyan-50: #ecfeff;
    --cyan-100: #cffafe;
    --cyan-200: #a5f3fc;
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;
    --cyan-600: #0891b2;
    --cyan-700: #0e7490;
    --cyan-800: #155e75;
    --cyan-900: #164e63;
    --cyan-950: #083344;

    /* Neutral */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;

    /* Semantic */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Theme */
    --bg: #ffffff;
    --bg-subtle: var(--slate-50);
    --bg-muted: var(--slate-100);
    --text: var(--slate-900);
    --text-secondary: var(--slate-600);
    --text-muted: var(--slate-400);
    --border: var(--slate-200);
    --primary: var(--cyan-600);
    --primary-hover: var(--cyan-700);
    --primary-light: var(--cyan-50);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Buttons - 精致按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    border: none;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 1px 2px rgba(8, 145, 178, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.3);
}

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

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

.btn-secondary:hover {
    background: var(--bg-subtle);
    border-color: var(--slate-300);
    transform: translateY(-1px);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

.btn-block {
    width: 100%;
}

/* ===== Nav - 极简奢华风格 ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-logo img {
    height: 40px;
    width: auto;
    display: block;
}

/* 导航链接 - 精致样式 */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-links a {
    position: relative;
    padding: 8px 16px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    color: var(--text);
    background: rgba(0, 0, 0, 0.04);
}

.nav-links a.active {
    color: var(--primary);
    font-weight: 600;
    background: rgba(8, 145, 178, 0.08);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--primary);
    border-radius: 1px;
}

/* 操作按钮 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* 汉堡菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.nav-toggle.active span:first-child {
    transform: rotate(45deg) translate(0, 0);
    position: absolute;
}

.nav-toggle.active span:last-child {
    transform: rotate(-45deg) translate(0, 0);
    position: absolute;
}

/* 移动端菜单 - 全屏覆盖 */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    z-index: 99;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu a {
    position: relative;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-3) var(--space-8);
    transition: all 0.2s ease;
    letter-spacing: 0.02em;
    border-radius: var(--radius-lg);
}

.mobile-menu a:hover {
    color: var(--text);
    background: var(--bg-subtle);
}

.mobile-menu a.active {
    color: var(--cyan-700);
    background: var(--cyan-50);
    font-weight: 600;
}

.mobile-menu a.active::before {
    content: '';
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--cyan-600);
    border-radius: 2px;
}

.mobile-menu .btn {
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-8);
    font-size: 1rem;
    border-radius: var(--radius-lg);
    background: var(--cyan-600);
    color: white;
    font-weight: 600;
}

.mobile-menu .btn:hover {
    background: var(--cyan-700);
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 80px 0 var(--space-12);
    background: linear-gradient(180deg, var(--cyan-50) 0%, var(--bg) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: var(--cyan-100);
    color: var(--cyan-700);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.hero-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--cyan-500);
    border-radius: 50%;
}

.hero-title {
    font-size: clamp(2.25rem, 4vw, 3.5rem);
    margin-bottom: var(--space-6);
    color: var(--slate-900);
}

.hero-title span {
    color: var(--primary);
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
}

.hero-visual {
    position: relative;
}

.hero-mockup {
    background: var(--bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--slate-900);
}

.mockup-dots {
    display: flex;
    gap: 5px;
}

.mockup-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.mockup-dots span:nth-child(1) { background: #ef4444; }
.mockup-dots span:nth-child(2) { background: #f59e0b; }
.mockup-dots span:nth-child(3) { background: #10b981; }

.mockup-title {
    font-size: 0.75rem;
    color: var(--slate-400);
    margin-left: var(--space-2);
}

.mockup-body {
    display: grid;
    grid-template-columns: 140px 1fr;
    min-height: 280px;
}

.mockup-sidebar {
    padding: var(--space-3);
    background: var(--slate-50);
    border-right: 1px solid var(--border);
}

/* 移动端 Tab - 默认隐藏 */
.mockup-tabs {
    display: none;
}

.mockup-menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mockup-menu-item {
    padding: var(--space-2) var(--space-3);
    font-size: 0.75rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    transition: all 0.15s ease;
}

.mockup-menu-item:hover {
    background: var(--slate-100);
    color: var(--text);
}

.mockup-menu-item.active {
    background: var(--cyan-50);
    color: var(--cyan-700);
    font-weight: 600;
}

.mockup-menu-item svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

.mockup-menu-item.active svg {
    opacity: 1;
}

.mockup-main {
    padding: var(--space-4);
}

.mockup-stat-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.mockup-mini-stat {
    padding: var(--space-3);
    background: var(--slate-50);
    border-radius: var(--radius-md);
}

.mockup-mini-label {
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-1);
}

.mockup-mini-value {
    font-size: 1.125rem;
    font-weight: 700;
}

.mockup-mini-change {
    font-size: 0.6875rem;
    color: var(--success);
    font-weight: 600;
}

.mockup-chart {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 80px;
    padding: var(--space-3);
    background: var(--slate-50);
    border-radius: var(--radius-md);
}

.chart-bar {
    flex: 1;
    background: var(--cyan-500);
    border-radius: 2px 2px 0 0;
    opacity: 0.7;
    animation: growUp 0.8s ease forwards;
    transform-origin: bottom;
}

@keyframes growUp {
    from { transform: scaleY(0); }
    to { transform: scaleY(1); }
}

/* Mockup Panels */
.mockup-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.mockup-panel.active {
    display: block;
}

/* Mockup Table */
.mockup-table {
    font-size: 0.75rem;
}

.mockup-table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--slate-100);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.mockup-table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--border);
}

.status-ok { color: var(--success); font-weight: 600; }
.status-warn { color: var(--warning); font-weight: 600; }
.status-low { color: var(--error); font-weight: 600; }

/* Mockup Form */
.mockup-form {
    font-size: 0.75rem;
}

.mockup-form-title {
    font-weight: 600;
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--border);
}

.mockup-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.mockup-form-group label {
    display: block;
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-1);
}

.mockup-input {
    padding: var(--space-2) var(--space-3);
    background: var(--slate-50);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
}

.mockup-form-items {
    margin-bottom: var(--space-3);
    padding: var(--space-2) 0;
    border-top: 1px solid var(--border);
}

.mockup-item-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    border-bottom: 1px dashed var(--border);
}

.mockup-form-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-2);
    font-weight: 600;
}

.mockup-total-value {
    font-size: 1rem;
    color: var(--primary);
}

/* Mockup Finance */
.mockup-finance {
    font-size: 0.75rem;
}

.mockup-finance-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.mockup-finance-total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.mockup-finance-bars {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.mockup-finance-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.mockup-finance-bar-fill {
    height: 8px;
    background: var(--slate-200);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.mockup-finance-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: inherit;
    border-radius: 4px;
}

.mockup-finance-bar-fill.income::after {
    background: var(--success);
}

.mockup-finance-bar-fill.expense::after {
    background: var(--error);
}

.mockup-finance-profit {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--cyan-50);
    border-radius: var(--radius-md);
}

.mockup-profit-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

/* Float Cards */
.hero-float {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--border);
    animation: floatCard 3s ease-in-out infinite;
}

.float-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
}

.float-icon.success {
    background: #ecfdf5;
    color: var(--success);
}

.float-icon.warning {
    background: #fffbeb;
    color: var(--warning);
}

.float-1 {
    top: 15%;
    right: -16px;
}

.float-2 {
    bottom: 15%;
    left: -16px;
    animation-delay: -1.5s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ===== Page Header - 精致设计 ===== */
.page-header {
    position: relative;
    padding: calc(80px + var(--space-20)) 0 var(--space-20);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
    text-align: center;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(8, 145, 178, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(8, 145, 178, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.page-header-content {
    position: relative;
    max-width: 680px;
    margin: 0 auto;
}

.page-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-5);
    padding: 6px 16px;
    background: rgba(8, 145, 178, 0.08);
    border-radius: var(--radius-full);
    border: 1px solid rgba(8, 145, 178, 0.12);
}

.page-title {
    font-size: clamp(2.25rem, 4vw, 3.25rem);
    font-weight: 800;
    margin-bottom: var(--space-5);
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text);
}

.page-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 520px;
    margin: 0 auto;
}

/* ===== Sections ===== */
.section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-4);
    padding: 6px 16px;
    background: rgba(8, 145, 178, 0.06);
    border-radius: var(--radius-full);
    border: 1px solid rgba(8, 145, 178, 0.1);
}

.section-title {
    font-size: clamp(1.875rem, 3vw, 2.75rem);
    font-weight: 800;
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 520px;
    margin: 0 auto;
}

/* ===== Features ===== */
.features {
    background: var(--bg-subtle);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

/* 桌面端隐藏滑动按钮和遮罩 */
.features-scroll-wrapper .scroll-btn,
.features-scroll-wrapper::before,
.features-scroll-wrapper::after {
    display: none !important;
}

.feature-card {
    padding: var(--space-8);
    background: var(--bg);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.feature-card:hover {
    border-color: var(--cyan-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cyan-50);
    color: var(--cyan-600);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.feature-list li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.feature-list li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--cyan-400);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== Solutions ===== */
.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-12);
}

.tab-btn {
    padding: var(--space-2) var(--space-5);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.15s ease;
}

.tab-btn:hover {
    color: var(--text);
    border-color: var(--slate-300);
}

.tab-btn.active {
    background: var(--cyan-600);
    color: white;
    border-color: var(--cyan-600);
}

.solution-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.solution-panel.active {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
}

.solution-content > p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.solution-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.solution-feature {
    display: flex;
    gap: var(--space-3);
}

.solution-feature-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cyan-50);
    color: var(--cyan-600);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.solution-feature-icon svg {
    width: 16px;
    height: 16px;
}

.solution-feature h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.solution-feature p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.solution-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.solution-card {
    padding: var(--space-6);
    background: var(--bg-subtle);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.2s ease;
}

.solution-card:hover {
    background: var(--cyan-50);
    border-color: var(--cyan-200);
}

.solution-card-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-card-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.solution-card-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.solution-card-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text);
}

/* ===== Pricing - 折叠卡片 ===== */
.pricing {
    background: var(--bg-subtle);
}

.pricing-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.pricing-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* 卡片头部 */
.pricing-card-header {
    padding: var(--space-4) var(--space-5);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pricing-card-header:active {
    background: var(--bg-subtle);
}

.pricing-card-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.pricing-card-left h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.pricing-tag {
    font-size: 0.625rem;
    color: var(--primary);
    background: var(--cyan-50);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.pricing-card-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.pricing-price {
    display: flex;
    align-items: baseline;
}

.pricing-currency {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}

.pricing-amount {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
}

.pricing-card.featured .pricing-amount {
    color: var(--cyan-700);
}

.pricing-period {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 2px;
}

.pricing-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.pricing-card.expanded .pricing-arrow {
    transform: rotate(180deg);
}

/* 卡片内容 */
.pricing-card-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.pricing-card.expanded .pricing-card-body {
    max-height: 350px;
}

.pricing-card-body-inner {
    padding: 0 var(--space-5) var(--space-5);
    border-top: 1px solid var(--border);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3) 0;
}

.pricing-features li {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) 0;
}

.pricing-features li.included::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
    font-size: 0.75rem;
    width: 16px;
    text-align: center;
}

.pricing-features li.excluded {
    color: var(--text-muted);
}

.pricing-features li.excluded::before {
    content: '—';
    color: var(--slate-300);
    font-size: 0.75rem;
    width: 16px;
    text-align: center;
}

.pricing-card .btn {
    width: 100%;
}

.pricing-badge-text {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: white;
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

/* 桌面端 - 四列展开 */
@media (min-width: 1024px) {
    .pricing-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-3);
    }

    .pricing-card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        padding: var(--space-4);
    }

    .pricing-card-left {
        width: 100%;
    }

    .pricing-card-left h3 {
        font-size: 1rem;
    }

    .pricing-card-right {
        width: 100%;
        justify-content: space-between;
    }

    .pricing-arrow {
        display: none;
    }

    .pricing-card-body {
        max-height: none;
    }

    .pricing-card-body-inner {
        padding: 0 var(--space-4) var(--space-4);
    }

    .pricing-amount {
        font-size: 1.25rem;
    }
}

/* ===== CTA ===== */
.cta {
    background: var(--slate-900);
    color: white;
    text-align: center;
}

.cta-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--space-4);
}

.cta-desc {
    font-size: 1.0625rem;
    color: var(--slate-400);
    margin-bottom: var(--space-8);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.cta .btn-primary {
    background: white;
    color: var(--slate-900);
}

.cta .btn-primary:hover {
    background: var(--cyan-400);
    color: white;
}

.cta .btn-secondary {
    border-color: var(--slate-700);
    color: var(--slate-300);
}

.cta .btn-secondary:hover {
    border-color: var(--slate-500);
    color: white;
    background: transparent;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-top: var(--space-10);
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--slate-400);
}

.cta-feature svg {
    width: 16px;
    height: 16px;
    color: var(--cyan-400);
}

/* ===== Footer ===== */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

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

.footer-brand img {
    height: 52px;
    width: auto;
    margin: 0 auto var(--space-4);
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 480px;
    margin: 0 auto;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--text);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-col a,
.footer-col li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color 0.15s ease;
    line-height: 1.6;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--text-muted);
    transition: color 0.15s ease;
}

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

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-links a {
    color: var(--text-muted);
    transition: color 0.15s ease;
}

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

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.2s ease;
    z-index: 50;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--cyan-600);
    color: white;
    border-color: var(--cyan-600);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    /* Hero */
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }

    .hero-float {
        display: none;
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Solutions */
    .solution-panel.active {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .solution-visual {
        order: -1;
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

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

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

    /* News */
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    /* Footer */
    .footer-grid {
        gap: var(--space-8);
    }

    .footer-links-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-6);
    }

    .footer-brand img {
        height: 44px;
    }
}

@media (max-width: 767px) {
    /* ===== 导航栏 ===== */
    .nav-links,
    .nav-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }

    .nav-inner {
        padding: var(--space-3) var(--space-4);
    }

    .nav-logo img {
        height: 28px;
    }

    /* ===== Hero - 沉浸式设计 ===== */
    .hero {
        padding: calc(64px + var(--space-4)) 0 var(--space-8);
        min-height: auto;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -30%;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
        border-radius: 50%;
        pointer-events: none;
    }

    .hero .container {
        gap: var(--space-6);
        position: relative;
    }

    .hero-badge {
        font-size: 0.6875rem;
        padding: 6px 12px;
        background: rgba(6, 182, 212, 0.1);
        border: 1px solid rgba(6, 182, 212, 0.2);
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.15;
        letter-spacing: -0.03em;
    }

    .hero-title br {
        display: none;
    }

    .hero-title span {
        display: inline-block;
        background: linear-gradient(135deg, var(--cyan-500) 0%, var(--cyan-700) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    .hero-desc {
        font-size: 0.9375rem;
        line-height: 1.6;
        color: var(--text-secondary);
    }

    .hero-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3);
    }

    .hero-actions .btn {
        padding: 14px 16px;
        font-size: 0.9375rem;
        border-radius: var(--radius-lg);
    }

    .hero-float {
        display: none;
    }

    /* ===== Mockup - 卡片式数据展示 ===== */
    .hero-visual {
        margin-top: var(--space-2);
    }

    .hero-mockup {
        max-width: 100%;
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-xl);
        border: 1px solid var(--border);
    }

    .mockup-header {
        padding: var(--space-3) var(--space-4);
    }

    .mockup-dots span {
        width: 8px;
        height: 8px;
    }

    .mockup-title {
        font-size: 0.6875rem;
    }

    .mockup-body {
        grid-template-columns: 1fr;
    }

    .mockup-sidebar {
        display: none;
    }

    /* 移动端显示 Tab */
    .mockup-tabs {
        display: flex;
    }

    .mockup-main {
        padding: var(--space-4);
    }

    .mockup-stat-row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-3);
        margin-bottom: var(--space-4);
    }

    .mockup-mini-stat {
        padding: var(--space-3);
        background: var(--bg-subtle);
        border-radius: var(--radius-md);
        text-align: center;
    }

    .mockup-mini-label {
        font-size: 0.625rem;
        color: var(--text-muted);
        margin-bottom: 4px;
    }

    .mockup-mini-value {
        font-size: 1rem;
        font-weight: 700;
    }

    .mockup-mini-change {
        font-size: 0.625rem;
        margin-top: 2px;
    }

    .mockup-chart {
        height: 80px;
        padding: var(--space-3);
        background: var(--bg-subtle);
        border-radius: var(--radius-md);
    }

    .chart-bar {
        border-radius: 3px 3px 0 0;
    }

    /* ===== Section - 优化间距 ===== */
    .section {
        padding: var(--space-12) 0;
    }

    .section-header {
        margin-bottom: var(--space-8);
        text-align: left;
    }

    .section-tag {
        font-size: 0.6875rem;
        padding: 5px 12px;
        margin-bottom: var(--space-3);
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: var(--space-2);
        letter-spacing: -0.02em;
    }

    .section-desc {
        font-size: 0.875rem;
        line-height: 1.5;
        margin: 0;
    }

    /* ===== Features - 横向滑动卡片 ===== */
    .features {
        padding: var(--space-10) 0;
        background: var(--bg-subtle);
    }

    /* 滑动容器包裹 */
    .features-scroll-wrapper {
        position: relative;
    }

    .features-grid {
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: var(--space-3);
        padding: 0 var(--space-4) var(--space-4);
        scrollbar-width: none;
    }

    .features-grid::-webkit-scrollbar {
        display: none;
    }

    /* 双侧渐变遮罩 */
    .features-scroll-wrapper::before,
    .features-scroll-wrapper::after {
        content: '' !important;
        position: absolute;
        top: 0;
        bottom: var(--space-4);
        width: 50px;
        pointer-events: none;
        z-index: 1;
        transition: opacity 0.3s ease;
        display: block !important;
    }

    .features-scroll-wrapper::before {
        left: 0;
        background: linear-gradient(to right, var(--bg-subtle), transparent);
        opacity: 0;
    }

    .features-scroll-wrapper::after {
        right: 0;
        background: linear-gradient(to left, var(--bg-subtle), transparent);
        opacity: 0;
    }

    .features-scroll-wrapper.show-left::before {
        opacity: 1;
    }

    .features-scroll-wrapper.show-right::after {
        opacity: 1;
    }

    /* 滑动切换按钮 */
    .scroll-btn {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        z-index: 2;
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 50%;
        box-shadow: var(--shadow-md);
        cursor: pointer;
        transition: all 0.2s ease;
        color: var(--text-secondary);
    }

    .scroll-btn:hover {
        background: var(--cyan-50);
        border-color: var(--cyan-200);
        color: var(--cyan-600);
        box-shadow: var(--shadow-lg);
    }

    .scroll-btn:active {
        transform: translateY(-50%) scale(0.95);
    }

    .scroll-btn svg {
        width: 16px;
        height: 16px;
    }

    .scroll-btn-prev {
        left: var(--space-2);
    }

    .scroll-btn-next {
        right: var(--space-2);
    }

    .scroll-btn.hidden {
        opacity: 0;
        pointer-events: none;
    }

    .feature-card {
        min-width: 260px;
        max-width: calc(100vw - var(--space-8));
        flex-shrink: 0;
        padding: var(--space-5);
        border-radius: var(--radius-xl);
        background: var(--bg);
        border: 1px solid var(--border);
    }

    .feature-card:last-child {
        margin-right: var(--space-4);
    }

    .feature-icon {
        width: 44px;
        height: 44px;
        margin-bottom: var(--space-4);
        border-radius: var(--radius-lg);
    }

    .feature-icon svg {
        width: 22px;
        height: 22px;
    }

    .feature-card h3 {
        font-size: 1.0625rem;
        margin-bottom: var(--space-2);
    }

    .feature-card p {
        font-size: 0.8125rem;
        margin-bottom: var(--space-4);
        line-height: 1.5;
    }

    .feature-list {
        gap: var(--space-2);
    }

    .feature-list li {
        font-size: 0.8125rem;
    }

    /* ===== Solutions - 滑动 Tab + 卡片 ===== */
    .solutions {
        padding: var(--space-10) 0;
    }

    .solutions-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: var(--space-2);
        padding: 0 var(--space-4) var(--space-3);
        margin: 0 calc(var(--space-4) * -1);
        scrollbar-width: none;
    }

    .solutions-tabs::-webkit-scrollbar {
        display: none;
    }

    .tab-btn {
        white-space: nowrap;
        padding: 8px 16px;
        font-size: 0.8125rem;
        border-radius: var(--radius-md);
    }

    .solution-panel.active {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .solution-content h3 {
        font-size: 1.25rem;
        margin-bottom: var(--space-3);
    }

    .solution-content > p {
        font-size: 0.875rem;
        margin-bottom: var(--space-5);
    }

    .solution-features {
        gap: var(--space-4);
        margin-bottom: var(--space-6);
    }

    .solution-feature {
        gap: var(--space-3);
    }

    .solution-feature-icon {
        width: 40px;
        height: 40px;
        border-radius: var(--radius-md);
    }

    .solution-feature-icon svg {
        width: 20px;
        height: 20px;
    }

    .solution-feature h4 {
        font-size: 0.9375rem;
        margin-bottom: 2px;
    }

    .solution-feature p {
        font-size: 0.8125rem;
    }

    .solution-visual {
        order: -1;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }

    .solution-card {
        padding: var(--space-4);
        border-radius: var(--radius-lg);
        text-align: center;
        background: var(--bg-subtle);
        border: 1px solid var(--border);
        transition: all 0.2s ease;
    }

    .solution-card:active {
        transform: scale(0.97);
    }

    .solution-card-icon {
        margin-bottom: var(--space-2);
    }

    .solution-card-icon img {
        width: 40px;
        height: 40px;
    }

    .solution-card-label {
        font-size: 0.75rem;
        font-weight: 600;
    }

    /* ===== Pricing - 移动端折叠 ===== */
    .pricing {
        padding: var(--space-8) 0;
        background: var(--bg-subtle);
    }

    .pricing-card.featured {
        order: -1;
    }

    .pricing-features {
        gap: var(--space-2);
        padding-bottom: var(--space-6);
    }

    .pricing-features li {
        font-size: 0.875rem;
        padding: var(--space-1) 0;
    }

    .pricing-features li::before {
        width: 18px;
        height: 18px;
        background-size: 10px;
    }

    .pricing-card .btn {
        padding: 14px;
    }

    .pricing-features {
        gap: var(--space-3);
        margin-bottom: var(--space-6);
    }

    .pricing-features li {
        font-size: 0.8125rem;
    }

    .pricing-card .btn {
        padding: 12px;
    }

    /* ===== Cases - 卡片优化 ===== */
    .cases-grid {
        display: flex;
        flex-direction: column;
        gap: var(--space-4);
    }

    .case-card {
        padding: var(--space-5);
        border-radius: var(--radius-xl);
    }

    .case-tag {
        font-size: 0.6875rem;
    }

    .case-header h3 {
        font-size: 1.0625rem;
    }

    .case-desc {
        font-size: 0.8125rem;
        margin-bottom: var(--space-4);
    }

    .case-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);
        padding: var(--space-3);
        border-radius: var(--radius-md);
    }

    .case-stat-value {
        font-size: 1rem;
    }

    .case-stat-label {
        font-size: 0.5625rem;
    }

    /* ===== News - 列表优化 ===== */
    .news-featured {
        padding: var(--space-5);
        border-radius: var(--radius-xl);
        margin-bottom: var(--space-6);
    }

    .news-meta {
        gap: var(--space-3);
        margin-bottom: var(--space-3);
    }

    .news-tag {
        font-size: 0.6875rem;
    }

    .news-date {
        font-size: 0.75rem;
    }

    .news-featured h2 {
        font-size: 1.1875rem;
        margin-bottom: var(--space-3);
        line-height: 1.3;
    }

    .news-featured p {
        font-size: 0.8125rem;
        margin-bottom: var(--space-4);
    }

    .news-grid {
        display: flex;
        flex-direction: column;
        gap: var(--space-3);
    }

    .news-card {
        padding: var(--space-4);
        border-radius: var(--radius-lg);
    }

    .news-card-header {
        margin-bottom: var(--space-2);
    }

    .news-card h3 {
        font-size: 0.9375rem;
        margin-bottom: var(--space-2);
    }

    .news-card p {
        font-size: 0.8125rem;
        margin-bottom: var(--space-3);
    }

    .news-link {
        font-size: 0.8125rem;
    }

    /* ===== Pagination ===== */
    .pagination {
        gap: var(--space-1);
        margin-top: var(--space-8);
    }

    .page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.8125rem;
    }

    .page-ellipsis {
        width: 24px;
    }

    /* ===== About ===== */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .about-content {
        order: 1;
    }

    .about-visual {
        order: 0;
    }

    .about-image {
        max-width: 160px;
        margin: 0 auto;
        border-radius: var(--radius-xl);
    }

    .about-subtitle {
        font-size: 0.9375rem;
    }

    .about-text p {
        font-size: 0.875rem;
    }

    /* ===== Contact - 卡片式 ===== */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .contact-info {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-3);
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-2);
        padding: var(--space-4);
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
    }

    .contact-icon {
        width: 40px;
        height: 40px;
        margin: 0 auto;
    }

    .contact-icon svg {
        width: 18px;
        height: 18px;
    }

    .contact-item h4 {
        font-size: 0.8125rem;
        margin-bottom: 0;
    }

    .contact-item p {
        font-size: 0.8125rem;
        margin-bottom: 0;
    }

    .contact-item span {
        font-size: 0.6875rem;
    }

    .contact-form-wrapper {
        padding: var(--space-5);
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-xl);
    }

    .contact-form-wrapper h3 {
        font-size: 1.125rem;
    }

    .contact-form-wrapper > p {
        font-size: 0.875rem;
        margin-bottom: var(--space-5);
    }

    .form-group {
        margin-bottom: var(--space-3);
    }

    .form-group label {
        font-size: 0.8125rem;
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 0.9375rem;
    }

    /* ===== CTA ===== */
    .cta {
        padding: var(--space-8) 0;
    }

    .cta-title {
        font-size: 1.25rem;
        margin-bottom: var(--space-2);
    }

    .cta-desc {
        font-size: 0.875rem;
        margin-bottom: var(--space-5);
    }

    .cta-actions {
        display: flex;
        gap: var(--space-3);
    }

    .cta-actions .btn {
        flex: 1;
        justify-content: center;
        padding: 10px 12px;
        font-size: 0.8125rem;
        border-radius: var(--radius-md);
    }

    .cta-actions .btn-lg {
        padding: 10px 12px;
        font-size: 0.8125rem;
    }

    .cta-features {
        display: flex;
        justify-content: center;
        gap: var(--space-4);
        margin-top: var(--space-5);
    }

    .cta-feature {
        flex-direction: row;
        align-items: center;
        gap: 4px;
        font-size: 0.75rem;
        padding: 0;
    }

    .cta-feature svg {
        width: 14px;
        height: 14px;
    }

    /* ===== Footer ===== */
    .footer {
        padding: var(--space-8) 0 var(--space-5);
    }

    .footer-grid {
        display: flex;
        flex-direction: column;
        gap: var(--space-6);
    }

    .footer-brand {
        text-align: center;
        padding-bottom: var(--space-5);
        border-bottom: 1px solid var(--border);
    }

    .footer-brand img {
        height: 32px;
        margin: 0 auto var(--space-3);
    }

    .footer-brand p {
        font-size: 0.875rem;
        max-width: 100%;
        line-height: 1.6;
        color: var(--text-secondary);
    }

    .footer-links-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-3);
    }

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

    .footer-col h4 {
        font-size: 0.8125rem;
        font-weight: 700;
        margin-bottom: var(--space-3);
        color: var(--text);
    }

    .footer-col ul {
        gap: var(--space-2);
    }

    .footer-col a,
    .footer-col li {
        font-size: 0.8125rem;
        line-height: 1.6;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
        font-size: 0.75rem;
        padding-top: var(--space-5);
    }

    /* ===== Page Header ===== */
    .page-header {
        padding: calc(64px + var(--space-8)) 0 var(--space-8);
    }

    .page-tag {
        font-size: 0.6875rem;
    }

    .page-title {
        font-size: 1.625rem;
        margin-bottom: var(--space-3);
    }

    .page-desc {
        font-size: 0.9375rem;
    }

    /* ===== Testimonials ===== */
    .testimonial-stars {
        font-size: 0.875rem;
        margin-bottom: var(--space-3);
    }

    .testimonial-text {
        font-size: 0.875rem;
        margin-bottom: var(--space-3);
    }

    .testimonial-author strong {
        font-size: 0.8125rem;
    }

    .testimonial-author span {
        font-size: 0.75rem;
    }

    /* ===== Back to Top ===== */
    .back-to-top {
        bottom: var(--space-4);
        right: var(--space-4);
        width: 40px;
        height: 40px;
        border-radius: var(--radius-lg);
    }
}

/* ===== 小屏手机 ===== */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-actions {
        grid-template-columns: 1fr;
    }

    .hero-actions .btn {
        padding: 12px;
    }

    .section-title {
        font-size: 1.375rem;
    }

    .features-grid {
        gap: var(--space-2);
    }

    .feature-card {
        min-width: 220px;
        max-width: calc(100vw - var(--space-6));
        padding: var(--space-4);
    }

    /* 小屏按钮调整 */
    .scroll-btn {
        width: 32px;
        height: 32px;
    }

    .scroll-btn svg {
        width: 14px;
        height: 14px;
    }

    .scroll-btn-prev {
        left: var(--space-1);
    }

    .scroll-btn-next {
        right: var(--space-1);
    }

    .solution-visual {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    .solution-card {
        padding: var(--space-3);
    }

    .solution-card-icon img {
        width: 32px;
        height: 32px;
    }

    .solution-card-label {
        font-size: 0.6875rem;
    }

    .pricing-card-header {
        padding: var(--space-3) var(--space-4);
    }

    .pricing-card-left h3 {
        font-size: 0.9375rem;
    }

    .pricing-amount {
        font-size: 1.125rem;
    }

    .pricing-card-body-inner {
        padding: 0 var(--space-4) var(--space-4);
    }

    .pricing-features li {
        font-size: 0.75rem;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .contact-item {
        flex-direction: row;
        text-align: left;
    }

    .contact-icon {
        margin: 0;
    }

    .cta-features {
        flex-wrap: wrap;
        gap: var(--space-2) var(--space-3);
    }

    .footer-brand p {
        font-size: 0.8125rem;
    }

    .footer-links-grid {
        grid-template-columns: 1fr;
        gap: var(--space-5);
    }

    .footer-col h4 {
        font-size: 0.875rem;
    }

    .footer-col a,
    .footer-col li {
        font-size: 0.875rem;
    }
}

/* ===== 移动端优化 - 安全区域适配 ===== */
@supports (padding: max(0px)) {
    @media (max-width: 767px) {
        .nav-inner {
            padding-left: max(var(--space-4), env(safe-area-inset-left));
            padding-right: max(var(--space-4), env(safe-area-inset-right));
        }

        .mobile-menu {
            padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
        }

        .container {
            padding-left: max(var(--space-4), env(safe-area-inset-left));
            padding-right: max(var(--space-4), env(safe-area-inset-right));
        }

        .footer {
            padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
        }
    }
}

/* ===== 移动端优化 - 滚动指示器 ===== */
@media (max-width: 767px) {
    /* 横向滚动容器优化 */
    .features-grid {
        scroll-padding-left: var(--space-4);
    }

    .solutions-tabs {
        scroll-padding-left: var(--space-4);
    }

    /* Mockup 移动端 Tab 切换 */
    .mockup-tabs {
        display: flex;
        overflow-x: auto;
        gap: var(--space-1);
        padding: var(--space-2) var(--space-3);
        background: var(--slate-100);
        scrollbar-width: none;
    }

    .mockup-tabs::-webkit-scrollbar {
        display: none;
    }

    .mockup-tab {
        flex-shrink: 0;
        padding: 6px 12px;
        font-size: 0.6875rem;
        font-weight: 500;
        color: var(--text-secondary);
        background: transparent;
        border: none;
        border-radius: var(--radius-sm);
        cursor: pointer;
        transition: all 0.15s ease;
        white-space: nowrap;
    }

    .mockup-tab.active {
        background: var(--bg);
        color: var(--cyan-700);
        font-weight: 600;
        box-shadow: var(--shadow-xs);
    }

    .mockup-tab svg {
        display: none;
    }

    /* 触摸反馈增强 */
    .feature-card:active,
    .solution-card:active,
    .pricing-card:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }

    .tab-btn:active,
    .mockup-tab:active {
        transform: scale(0.95);
    }

    .btn:active {
        transform: scale(0.97);
    }
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }

    .fade-in {
        opacity: 1;
        transform: none;
    }
}

/* ===== Cases ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.case-card {
    padding: var(--space-8);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    transition: all 0.2s ease;
}

.case-card:hover {
    border-color: var(--cyan-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.case-header {
    margin-bottom: var(--space-4);
}

.case-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--cyan-50);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
}

.case-header h3 {
    font-size: 1.25rem;
}

.case-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
}

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

.case-stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.case-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    transition: gap 0.2s ease;
}

.case-link:hover {
    gap: var(--space-3);
}

/* ===== Testimonials ===== */
.testimonial-stars {
    color: var(--warning);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.testimonial-author strong {
    font-size: 0.875rem;
}

.testimonial-author span {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ===== News ===== */
.news-featured {
    padding: var(--space-8);
    background: var(--bg-subtle);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-8);
}

.news-featured h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
}

.news-featured p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.7;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.news-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--cyan-50);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
}

.news-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.news-card {
    padding: var(--space-6);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    transition: all 0.2s ease;
}

.news-card:hover {
    border-color: var(--cyan-200);
    box-shadow: var(--shadow-md);
}

.news-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.news-card h3 {
    font-size: 1.0625rem;
    margin-bottom: var(--space-3);
    line-height: 1.4;
}

.news-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.news-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    transition: all 0.15s ease;
}

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

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-12);
}

.page-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all 0.15s ease;
    cursor: pointer;
    padding: 0 var(--space-2);
}

.page-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.page-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-prev,
.page-next {
    padding: 0;
}

.page-ellipsis {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-subtitle {
    font-size: 1.0625rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--space-6);
}

.about-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    border-radius: var(--radius-2xl);
    padding: var(--space-12);
}

.about-image img {
    max-width: 200px;
}

.about-video {
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-video video {
    width: 100%;
    display: block;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-item {
    display: flex;
    gap: var(--space-4);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cyan-50);
    color: var(--cyan-600);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: var(--space-1);
}

.contact-item p {
    font-size: 0.9375rem;
    color: var(--text);
    margin-bottom: var(--space-1);
}

.contact-item span {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.contact-form-wrapper h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
}

.contact-form-wrapper > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: border-color 0.15s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--cyan-50);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}