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

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #dbeafe;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #3b82f6;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
}

/* Auth Pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}
.auth-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}
.auth-card h1 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--gray-900);
}
.auth-card .subtitle {
    color: var(--gray-500);
    margin-bottom: 24px;
    font-size: 14px;
}
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { background: var(--gray-300); cursor: not-allowed; }
.btn-secondary { background: white; color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: var(--success); color: white; }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; }
.auth-links {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
    color: var(--gray-500);
}
.auth-links a { color: var(--primary); text-decoration: none; }
.auth-links a:hover { text-decoration: underline; }

/* Layout */
.app-layout { display: flex; min-height: 100vh; }
.sidebar {
    width: 240px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}
.sidebar-logo {
    padding: 20px;
    font-size: 18px;
    font-weight: 700;
    color: white;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.05); color: white; }
.sidebar-nav a.active {
    background: rgba(59,130,246,0.15);
    color: white;
    border-left-color: var(--primary);
}
.sidebar-nav .nav-icon { width: 20px; text-align: center; font-size: 16px; }
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 12px;
    color: var(--gray-400);
}
.main-content {
    flex: 1;
    margin-left: 240px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.topbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}
.topbar h2 { font-size: 18px; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 16px; }
.user-menu { display: flex; align-items: center; gap: 10px; cursor: pointer; position: relative; }
.user-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 600;
}
.user-dropdown {
    position: absolute;
    top: 100%; right: 0;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    display: none;
    z-index: 200;
}
.user-dropdown.show { display: block; }
.user-dropdown a, .user-dropdown button {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    border: none;
    background: none;
    font-size: 14px;
    color: var(--gray-700);
    cursor: pointer;
    text-decoration: none;
}
.user-dropdown a:hover, .user-dropdown button:hover { background: var(--gray-50); }
.page-content { padding: 24px; flex: 1; }

/* Cards */
.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.card-header h3 { font-size: 16px; font-weight: 600; }
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}
.stat-card .stat-label { font-size: 13px; color: var(--gray-500); margin-bottom: 8px; }
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--gray-900); }
.stat-card .stat-change { font-size: 12px; margin-top: 4px; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* Tables */
.table-container { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}
th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-600);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
tr:hover { background: var(--gray-50); }
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* Chat */
.chat-layout { display: flex; height: calc(100vh - 60px); }
.chat-sidebar {
    width: 280px;
    background: white;
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}
.chat-sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--gray-200);
}
.chat-list { flex: 1; overflow-y: auto; }
.chat-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-100);
    cursor: pointer;
    transition: background 0.2s;
}
.chat-item:hover { background: var(--gray-50); }
.chat-item.active { background: var(--primary-light); border-left: 3px solid var(--primary); }
.chat-item-title { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-item-time { font-size: 12px; color: var(--gray-400); margin-top: 2px; }
.chat-main { flex: 1; display: flex; flex-direction: column; }
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.message {
    display: flex;
    gap: 12px;
    max-width: 80%;
}
.message.user { align-self: flex-end; flex-direction: row-reverse; }
.message-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 600;
}
.message.user .message-avatar { background: var(--primary); color: white; }
.message.ai .message-avatar { background: var(--success); color: white; }
.message-bubble {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.6;
    word-wrap: break-word;
}
.message.user .message-bubble { background: var(--primary); color: white; border-bottom-right-radius: 4px; }
.message.ai .message-bubble { background: white; border: 1px solid var(--gray-200); border-bottom-left-radius: 4px; }
.message-bubble pre {
    background: var(--gray-800);
    color: var(--gray-100);
    padding: 12px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 8px 0;
    font-size: 13px;
}
.message-bubble code {
    background: var(--gray-100);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
}
.message-bubble pre code { background: none; padding: 0; }
.tool-call {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    padding: 8px 12px;
    margin: 8px 0;
    font-size: 13px;
}
.tool-call-name { font-weight: 600; color: var(--primary); }
.tool-call-result { color: var(--gray-600); margin-top: 4px; }
.chat-input-area {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    background: white;
}
.chat-input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}
.chat-input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    resize: none;
    min-height: 44px;
    max-height: 150px;
    font-family: inherit;
}
.chat-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }
.typing-indicator { display: flex; gap: 4px; padding: 8px 0; }
.typing-indicator span {
    width: 8px; height: 8px;
    background: var(--gray-400);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-8px); opacity: 1; }
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}
.pricing-card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border: 2px solid transparent;
    transition: all 0.2s;
    position: relative;
}
.pricing-card.featured { border-color: var(--primary); }
.pricing-card .pricing-badge {
    position: absolute;
    top: -12px; left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}
.pricing-card h3 { font-size: 18px; margin-bottom: 8px; }
.pricing-card .price { font-size: 32px; font-weight: 700; margin-bottom: 4px; }
.pricing-card .price-period { font-size: 14px; color: var(--gray-500); }
.pricing-card .pricing-desc { font-size: 14px; color: var(--gray-500); margin: 12px 0; }
.pricing-features { list-style: none; margin: 16px 0; }
.pricing-features li {
    padding: 6px 0;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.pricing-features li::before { content: "✓"; color: var(--success); font-weight: 700; }

/* Toast */
#toast-container {
    position: fixed;
    top: 20px; right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    color: white;
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    max-width: 360px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }
.toast.info { background: var(--primary); }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}
@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}
.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-header h3 { font-size: 18px; }
.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--gray-400);
    line-height: 1;
}
.modal-close:hover { color: var(--gray-600); }
.modal-body { padding: 24px; }
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--gray-400);
}
.empty-state-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state-text { font-size: 16px; margin-bottom: 16px; }

/* Loading */
.loading { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--gray-300); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.page-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    flex-direction: column;
    gap: 12px;
    color: var(--gray-400);
}

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform 0.3s; z-index: 500; }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .chat-layout { flex-direction: column; }
    .chat-sidebar { width: 100%; height: auto; max-height: 200px; }
    .stats-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
}


/* ========== 落地页样式 ========== */
.landing-page {
    min-height: 100vh;
    background: var(--gray-50);
}

/* 导航栏 */
.landing-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
}
.landing-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.landing-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}
.landing-logo-icon {
    font-size: 24px;
}
.landing-nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}
.landing-nav-links a {
    text-decoration: none;
    color: var(--gray-600);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}
.landing-nav-links a:hover {
    color: var(--primary);
}
.landing-nav-links .btn {
    padding: 8px 16px;
    font-size: 14px;
}

/* Hero区域 */
.landing-hero {
    padding: 80px 24px 60px;
    background: linear-gradient(180deg, #eff6ff 0%, var(--gray-50) 100%);
}
.landing-hero-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}
.landing-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
.landing-hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--gray-900);
    margin: 0 0 20px;
}
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.landing-hero-desc {
    font-size: 18px;
    line-height: 1.7;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto 32px;
}
.landing-hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}
.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}
.landing-hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}
.stat-item {
    text-align: center;
}
.stat-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
}
.stat-label {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}

/* 通用section */
.landing-section-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.landing-section-header {
    text-align: center;
    margin-bottom: 48px;
}
.landing-section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0 0 12px;
}
.landing-section-header p {
    font-size: 18px;
    color: var(--gray-500);
    margin: 0;
}

/* 功能特点 */
.landing-features {
    padding: 80px 0;
    background: #fff;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}
.feature-card {
    padding: 32px 24px;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.feature-icon {
    font-size: 40px;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 12px;
}
.feature-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-500);
    margin: 0;
}

/* 工作流程 */
.landing-workflow {
    padding: 80px 0;
    background: var(--gray-50);
}
.workflow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}
.workflow-step {
    flex: 1;
    min-width: 240px;
    max-width: 320px;
    padding: 32px 24px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    text-align: center;
    position: relative;
}
.step-number {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}
.step-icon {
    font-size: 48px;
    margin-bottom: 16px;
}
.workflow-step h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 12px;
}
.workflow-step p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-500);
    margin: 0;
}
.workflow-arrow {
    font-size: 24px;
    color: var(--gray-300);
    font-weight: 700;
}

/* 定价方案 */
.landing-pricing {
    padding: 80px 0;
    background: #fff;
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}
.pricing-card {
    padding: 32px 24px;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    position: relative;
    transition: all 0.3s;
}
.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.pricing-card.featured {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px var(--primary-light);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    background: var(--primary);
    color: #fff;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.pricing-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.pricing-price {
    margin-bottom: 8px;
}
.price-currency {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-600);
    vertical-align: top;
}
.price-amount {
    font-size: 48px;
    font-weight: 800;
    color: var(--gray-900);
}
.price-period {
    font-size: 16px;
    color: var(--gray-500);
}
.pricing-desc {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 24px;
}
.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
}
.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}
.pricing-features li.disabled {
    color: var(--gray-300);
}
.btn-block {
    width: 100%;
    text-align: center;
}

/* CTA区域 */
.landing-cta {
    padding: 80px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
    text-align: center;
}
.landing-cta-inner {
    max-width: 600px;
    margin: 0 auto;
}
.landing-cta h2 {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 12px;
}
.landing-cta p {
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    margin: 0 0 32px;
}
.landing-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.landing-cta .btn-primary {
    background: #fff;
    color: var(--primary);
}
.landing-cta .btn-primary:hover {
    background: var(--gray-50);
}
.landing-cta .btn-outline {
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}
.landing-cta .btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

/* Footer */
.landing-footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 48px 24px 0;
}
.landing-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    padding-bottom: 32px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.footer-desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-400);
    margin: 0;
}
.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 16px;
}
.footer-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-500);
}

/* 响应式 */
@media (max-width: 768px) {
    .landing-hero-title { font-size: 32px; }
    .landing-hero-desc { font-size: 16px; }
    .landing-hero-stats { gap: 24px; }
    .stat-num { font-size: 24px; }
    .landing-section-header h2 { font-size: 28px; }
    .workflow-arrow { display: none; }
    .landing-footer-inner { grid-template-columns: 1fr 1fr; }
    .landing-nav-links a:not(.btn) { display: none; }
}