/* ============================================
   百度蜘蛛池 - 全局样式
   ============================================ */

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

:root {
    /* 主色系 */
    --primary: #2932E1;
    --primary-light: #4E6EF2;
    --primary-dark: #1A2090;
    --primary-gradient: linear-gradient(135deg, #2932E1 0%, #4E6EF2 100%);
    --accent: #FF6B35;
    --accent-gradient: linear-gradient(135deg, #FF6B35 0%, #FF8E53 100%);

    /* 中性色 */
    --bg: #F5F7FA;
    --bg-alt: #FFFFFF;
    --bg-dark: #0F0F1E;
    --text: #1A1A2E;
    --text-light: #6B7280;
    --text-lighter: #9CA3AF;
    --border: #E5E7EB;
    --border-light: #F3F4F6;

    /* 功能色 */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.10);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
    --shadow-primary: 0 8px 24px rgba(41,50,225,0.25);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue",
                 Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* ---------- 通用容器 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

/* ---------- Section Header ---------- */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    background: rgba(41, 50, 225, 0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }

.btn-primary {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(41,50,225,0.35);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-white {
    background: #fff;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ---------- 导航栏 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
}

.logo-icon {
    font-size: 26px;
    filter: drop-shadow(0 2px 4px rgba(41,50,225,0.2));
}

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

.nav-menu {
    display: flex;
    gap: 36px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- Hero 区域 ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #EEF2FF 0%, #F5F7FA 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-particle {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.5;
    animation: floatParticle 8s ease-in-out infinite;
}

.p1 { width: 300px; height: 300px; background: rgba(41,50,225,0.15); top: 10%; left: 5%; }
.p2 { width: 200px; height: 200px; background: rgba(78,110,242,0.15); top: 50%; right: 10%; animation-delay: 2s; }
.p3 { width: 150px; height: 150px; background: rgba(255,107,53,0.1); bottom: 10%; left: 30%; animation-delay: 4s; }
.p4 { width: 250px; height: 250px; background: rgba(41,50,225,0.08); top: 20%; right: 30%; animation-delay: 1s; }
.p5 { width: 180px; height: 180px; background: rgba(78,110,242,0.1); bottom: 20%; right: 5%; animation-delay: 3s; }

@keyframes floatParticle {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(41,50,225,0.15);
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.hero-title {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
    color: var(--text);
}

.hero-title-highlight {
    display: block;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 36px;
    font-weight: 700;
    margin-top: 8px;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-light);
    line-height: 1.9;
    margin-bottom: 36px;
}

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

.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
}

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

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 6px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Hero 可视化卡片 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    width: 100%;
    max-width: 440px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: cardFloat 4s ease-in-out infinite;
}

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

.hero-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-dark);
    color: #fff;
}

.hero-card-dots {
    display: flex;
    gap: 6px;
}

.hero-card-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
}
.hero-card-dots span:nth-child(1) { background: #FF5F57; }
.hero-card-dots span:nth-child(2) { background: #FEBC2E; }
.hero-card-dots span:nth-child(3) { background: #28C840; }

.hero-card-title {
    font-size: 14px;
    font-weight: 600;
    opacity: 0.9;
}

.hero-card-body {
    padding: 24px;
}

.monitor-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.monitor-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    width: 90px;
    flex-shrink: 0;
}

.monitor-bar {
    flex: 1;
    height: 8px;
    background: var(--border-light);
    border-radius: 4px;
    overflow: hidden;
}

.monitor-bar-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 4px;
    animation: barGrow 1.5s ease-out;
}

@keyframes barGrow {
    from { width: 0 !important; }
}

.monitor-value {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    width: 40px;
    text-align: right;
}

.monitor-summary {
    display: flex;
    justify-content: space-around;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 2px dashed var(--border-light);
}

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

.summary-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
}

.summary-label {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

/* ---------- 功能特色 ---------- */
.features {
    background: #fff;
}

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

.feature-card {
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

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

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-icon-1 { background: rgba(41,50,225,0.1); }
.feature-icon-2 { background: rgba(16,185,129,0.1); }
.feature-icon-3 { background: rgba(255,107,53,0.1); }
.feature-icon-4 { background: rgba(245,158,11,0.1); }

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

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    font-size: 13px;
    color: var(--text-light);
    padding-left: 20px;
    position: relative;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--success);
    font-weight: 700;
}

/* ---------- 工作原理 ---------- */
.how-it-works {
    background: linear-gradient(180deg, #F5F7FA 0%, #EEF2FF 100%);
}

.steps-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.step-line {
    position: absolute;
    left: 40px;
    top: 20px;
    bottom: 20px;
    width: 3px;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
    border-radius: 2px;
    opacity: 0.2;
}

.step-item {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    position: relative;
    align-items: flex-start;
}

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

.step-number {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    background: #fff;
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 900;
    color: var(--primary);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.step-item:hover .step-number {
    background: var(--primary-gradient);
    color: #fff;
    transform: scale(1.05);
}

.step-content {
    flex: 1;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.step-item:hover .step-content {
    box-shadow: var(--shadow-lg);
    transform: translateX(8px);
}

.step-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.step-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

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

/* ---------- 提交测试表单 ---------- */
.submit-section {
    background: #fff;
}

.submit-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.submit-info .section-tag {
    margin-bottom: 16px;
}

.submit-info .section-title {
    text-align: left;
    font-size: 32px;
}

.submit-info .section-desc {
    text-align: left;
    margin-bottom: 32px;
}

.submit-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.submit-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text);
    font-weight: 500;
}

.check-icon {
    width: 24px;
    height: 24px;
    background: var(--success);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.submit-form-card {
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 40px;
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.submit-form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary-gradient);
}

.form-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 28px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.required {
    color: var(--error);
}

.form-hint {
    color: var(--text-lighter);
    font-weight: 400;
    font-size: 13px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text);
    background: var(--bg);
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(41,50,225,0.08);
}

.form-input::placeholder {
    color: var(--text-lighter);
}

.form-input.error {
    border-color: var(--error);
    background: rgba(239,68,68,0.03);
}

.form-error {
    display: block;
    font-size: 13px;
    color: var(--error);
    margin-top: 6px;
    min-height: 18px;
}

/* 验证码区域 */
.captcha-wrapper {
    display: flex;
    gap: 12px;
    align-items: center;
}

.captcha-input {
    flex: 1;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
}

.captcha-image {
    width: 130px;
    height: 44px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 2px solid var(--border);
    flex-shrink: 0;
    transition: var(--transition);
    object-fit: cover;
    background: var(--bg);
}

.captcha-image:hover {
    border-color: var(--primary);
}

.captcha-image.loading {
    opacity: 0.5;
    pointer-events: none;
}

.captcha-refresh {
    width: 44px;
    height: 44px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.captcha-refresh:hover {
    border-color: var(--primary);
    background: rgba(41,50,225,0.05);
    transform: rotate(180deg);
}

/* 复选框 */
.form-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.form-checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 4px;
    flex-shrink: 0;
    margin-top: 2px;
    transition: var(--transition);
    position: relative;
}

.form-checkbox-label input:checked + .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.form-checkbox-label input:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
}

.form-link {
    color: var(--primary);
    text-decoration: underline;
}

.form-tip {
    text-align: center;
    font-size: 13px;
    color: var(--text-lighter);
    margin-top: 16px;
}

/* 提交按钮加载动画 */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* 提交成功 */
.submit-success {
    text-align: center;
    padding: 20px 0;
}

.success-icon {
    font-size: 64px;
    margin-bottom: 16px;
    animation: bounceIn 0.6s ease-out;
}

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

.success-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--success);
    margin-bottom: 12px;
}

.success-desc {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.success-info {
    background: var(--bg);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 24px;
    text-align: left;
    font-size: 14px;
    color: var(--text);
    line-height: 2;
}

/* ---------- 价格方案 ---------- */
.pricing {
    background: linear-gradient(180deg, #EEF2FF 0%, #F5F7FA 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: #fff;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    position: relative;
    transition: var(--transition);
}

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

.pricing-popular {
    border-color: var(--primary);
    box-shadow: var(--shadow-primary);
    transform: scale(1.05);
}

.pricing-popular:hover {
    transform: scale(1.05) translateY(-8px);
}

.popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gradient);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 20px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(255,107,53,0.3);
}

.pricing-header {
    margin-bottom: 20px;
}

.pricing-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-symbol {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.price-amount {
    font-size: 42px;
    font-weight: 900;
    color: var(--text);
    line-height: 1;
}

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

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

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 28px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
}

.pricing-features li.disabled {
    color: var(--text-lighter);
}

.pricing-features .check {
    width: 20px;
    height: 20px;
    background: rgba(16,185,129,0.1);
    color: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.pricing-features .cross {
    width: 20px;
    height: 20px;
    background: rgba(239,68,68,0.1);
    color: var(--error);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ---------- FAQ ---------- */
.faq {
    background: #fff;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-item.active .faq-question {
    color: var(--primary);
}

.faq-icon {
    font-size: 24px;
    font-weight: 300;
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 20px;
}

.faq-answer p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.9;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
    background: var(--primary-gradient);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

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

.cta-title {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.cta-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 32px;
}

/* ---------- 页脚 ---------- */
.footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .nav-logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
    max-width: 320px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-title {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-contact li {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
    line-height: 1.6;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* ---------- 悬浮客服组件 ---------- */
.customer-service {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 999;
}

.cs-trigger {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    transition: var(--transition);
    position: relative;
}

.cs-trigger:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 36px rgba(41,50,225,0.4);
}

.cs-trigger-icon {
    font-size: 24px;
}

.cs-trigger-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 20px;
    height: 20px;
    background: var(--error);
    color: #fff;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #fff;
    animation: badgeBounce 2s ease-in-out infinite;
}

@keyframes badgeBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

.cs-trigger-text {
    font-size: 10px;
    color: rgba(255,255,255,0.9);
    font-weight: 600;
}

.cs-panel {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 360px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
}

.cs-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.cs-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--primary-gradient);
    color: #fff;
}

.cs-panel-title {
    font-size: 16px;
    font-weight: 700;
}

.cs-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.cs-panel-body {
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
}

.cs-message {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.cs-avatar {
    width: 36px;
    height: 36px;
    background: var(--bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.cs-bubble {
    background: var(--bg);
    border-radius: 4px 12px 12px 12px;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--text);
    line-height: 1.7;
    max-width: 260px;
}

.cs-quick-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.cs-quick-btn {
    padding: 10px 16px;
    background: rgba(41,50,225,0.05);
    border: 1px solid rgba(41,50,225,0.1);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.cs-quick-btn:hover {
    background: rgba(41,50,225,0.1);
    transform: translateX(4px);
}

.cs-contact-methods {
    border-top: 1px solid var(--border-light);
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.cs-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.cs-contact-icon {
    width: 40px;
    height: 40px;
    background: var(--bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.cs-contact-label {
    font-size: 12px;
    color: var(--text-light);
}

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

.cs-panel-footer {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-light);
    background: var(--bg);
}

.cs-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: #fff;
}

.cs-input:focus {
    outline: none;
    border-color: var(--primary);
}

.cs-input:disabled {
    background: var(--bg);
    color: var(--text-lighter);
    cursor: not-allowed;
}

.cs-send {
    padding: 8px 16px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.cs-send:disabled {
    background: var(--border);
    cursor: not-allowed;
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 100px;
    width: 44px;
    height: 44px;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 50%;
    font-size: 20px;
    color: var(--primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 998;
}

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

.back-to-top:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-visual {
        order: -1;
    }

    .hero-card {
        max-width: 380px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .submit-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        border-bottom: 1px solid var(--border-light);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-link {
        display: block;
        padding: 14px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-actions .btn {
        display: none;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-title-highlight {
        font-size: 26px;
    }

    .hero-desc {
        font-size: 15px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

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

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 26px;
    }

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

    .step-item {
        flex-direction: column;
        gap: 16px;
    }

    .step-line {
        display: none;
    }

    .step-number {
        width: 60px;
        height: 60px;
        font-size: 22px;
    }

    .submit-form-card {
        padding: 24px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .pricing-popular {
        transform: none;
    }

    .pricing-popular:hover {
        transform: translateY(-8px);
    }

    .cta-title {
        font-size: 24px;
    }

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

    .cs-panel {
        width: calc(100vw - 48px);
        max-width: 360px;
    }

    .back-to-top {
        bottom: 90px;
        right: 16px;
    }

    .customer-service {
        right: 16px;
        bottom: 16px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .hero-title-highlight {
        font-size: 22px;
    }

    .hero-actions {
        flex-direction: column;
    }

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

    .section-title {
        font-size: 22px;
    }

    .captcha-wrapper {
        flex-wrap: wrap;
    }

    .captcha-image {
        width: 110px;
    }
}

/* ---------- AOS 动画（简化版） ---------- */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"] {
    transform: translateY(40px);
}

[data-aos="fade-right"] {
    transform: translateX(-40px);
}

[data-aos="fade-up"].aos-animate,
[data-aos="fade-right"].aos-animate {
    opacity: 1;
    transform: translate(0, 0);
}

/* ---------- btn-accent (橙色强调按钮) ---------- */
.btn-accent {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 8px 24px rgba(255,107,53,0.3);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(255,107,53,0.4);
    color: #fff;
}

/* ---------- 定制报量套餐 Banner ---------- */
.pricing-custom-banner {
    margin-top: 36px;
    background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    border-radius: var(--radius-xl);
    padding: 48px;
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 48px;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.pricing-custom-banner::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -5%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255,107,53,0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.pricing-custom-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(78,110,242,0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.custom-banner-left {
    position: relative;
    z-index: 1;
}

.custom-banner-badge {
    display: inline-block;
    padding: 5px 16px;
    background: var(--accent-gradient);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 16px;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.custom-banner-title {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}

.custom-banner-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    line-height: 1.9;
    margin-bottom: 24px;
}

.custom-banner-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.custom-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.85);
}

.custom-feature .check {
    width: 20px;
    height: 20px;
    background: rgba(255,107,53,0.2);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}

.custom-banner-right {
    position: relative;
    z-index: 1;
    text-align: center;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    backdrop-filter: blur(10px);
}

.custom-price-label {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
}

.custom-price-value {
    font-size: 36px;
    font-weight: 900;
    color: #fff;
    line-height: 1;
    margin-bottom: 6px;
}

.custom-price-unit {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 28px;
}

.custom-contact {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 2;
}

/* 定制套餐响应式 */
@media (max-width: 768px) {
    .pricing-custom-banner {
        grid-template-columns: 1fr;
        padding: 32px 24px;
        gap: 32px;
    }

    .custom-banner-features {
        grid-template-columns: 1fr;
    }

    .custom-banner-title {
        font-size: 24px;
    }
}

/* ---------- 提交防重复提示 ---------- */
.form-alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
    align-items: center;
    gap: 8px;
}

.form-alert.show {
    display: flex;
}

.form-alert.error {
    background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.2);
    color: var(--error);
}

.form-alert.warning {
    background: rgba(245,158,11,0.08);
    border: 1px solid rgba(245,158,11,0.2);
    color: var(--warning);
}

/* 提交冷却倒计时 */
.submit-cooldown {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 8px;
}

.submit-cooldown-timer {
    font-weight: 700;
    color: var(--accent);
}