/* ===== 基础样式 reset+字体 ===== */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600;700;800&display=swap');

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

:root {
    /* 深钴蓝配色 - 稳重/信赖/专业 */
    --cobalt: #1E4D7B;
    --cobalt-light: #2563EB;
    --cobalt-dark: #1E3A5F;
    /* 安全绿点缀 - 安全可靠/稳定/合规 */
    --green-safe: #059669;
    --green-safe-dark: #047857;
    --green-safe-light: #10B981;
    /* 即开金点缀 - 即开即用/一键启动/立即使用 */
    --gold-instant: #D97706;
    --gold-instant-dark: #B45309;
    --gold-instant-light: #F59E0B;
    /* 背景色 */
    --bg-white: #FFFFFF;
    --bg-page: #F0F9FF;
    --bg-light: #E0F2FE;
    /* 文字色 */
    --text-dark: #1E3A5F;
    --text-body: #334155;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    /* 边框 */
    --border: #E5E7EB;
    /* 阴影 */
    --card-shadow: 0 2px 8px rgba(30,77,123,0.08);
    --shadow-sm: 0 1px 3px rgba(30,77,123,0.06);
    --shadow-md: 0 8px 24px rgba(30,77,123,0.12);
    --shadow-lg: 0 12px 40px rgba(30,77,123,0.15);
    /* 圆角 */
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    /* 过渡 */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

/* ===== 导航栏（白色，滚动深钴蓝阴影） ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(255, 255, 255, 0.98);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(30, 77, 123, 0.12);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.navbar-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 18px;
}

.navbar-logo-text {
    font-family: 'DM Sans', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--cobalt);
    letter-spacing: 0.5px;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.navbar-link {
    text-decoration: none;
    color: var(--text-body);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cobalt);
    transition: var(--transition);
}

.navbar-link:hover {
    color: var(--cobalt);
}

.navbar-link:hover::after {
    width: 100%;
}

.navbar-link.active {
    color: var(--cobalt);
}

.navbar-link.active::after {
    width: 100%;
}

.navbar-cta {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    color: white !important;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
}

.navbar-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 77, 123, 0.3);
}

.navbar-cta::after {
    display: none;
}

/* 汉堡菜单 */
.navbar-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.navbar-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--cobalt);
    transition: var(--transition);
}

.navbar-mobile {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    box-shadow: var(--shadow-md);
    padding: 16px 0;
    z-index: 999;
}

.navbar-mobile.active {
    display: block;
}

.navbar-mobile-link {
    display: block;
    padding: 14px 24px;
    text-decoration: none;
    color: var(--text-body);
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.navbar-mobile-link:hover,
.navbar-mobile-link.active {
    background: var(--bg-page);
    color: var(--cobalt);
    border-left-color: var(--cobalt);
}

/* ===== Hero区通用样式 ===== */
.hero-section {
    padding: 140px 24px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 50px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-badge.safe {
    background: rgba(5, 150, 105, 0.2);
    border-color: rgba(5, 150, 105, 0.3);
}

.hero-badge.instant {
    background: rgba(217, 119, 6, 0.2);
    border-color: rgba(217, 119, 6, 0.3);
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: white;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-instant), var(--gold-instant-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(217, 119, 6, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 119, 6, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.btn-cobalt {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    color: white;
    box-shadow: 0 4px 15px rgba(30, 77, 123, 0.3);
}

.btn-cobalt:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 77, 123, 0.4);
}

/* ===== 安全锁动画 + 即开动画 ===== */
.hero-animation-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.animation-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.animation-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    position: relative;
}

.safe-animation {
    background: linear-gradient(135deg, var(--green-safe), var(--green-safe-dark));
    animation: safePulse 2s ease-in-out infinite;
}

.instant-animation {
    background: linear-gradient(135deg, var(--gold-instant), var(--gold-instant-dark));
    animation: instantRotate 3s ease-in-out infinite;
}

@keyframes safePulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(5, 150, 105, 0.4); }
    50% { transform: scale(1.05); box-shadow: 0 0 30px 10px rgba(5, 150, 105, 0.2); }
}

@keyframes instantRotate {
    0% { transform: rotate(0deg); }
    25% { transform: rotate(90deg); }
    50% { transform: rotate(180deg); }
    75% { transform: rotate(270deg); }
    100% { transform: rotate(360deg); }
}

.animation-label {
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.animation-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.hero-connect {
    display: flex;
    align-items: center;
    gap: 16px;
    color: white;
    font-size: 20px;
    font-weight: 700;
}

.hero-connect-line {
    width: 60px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
}

.hero-popup {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: 20px 32px;
    margin-top: 30px;
    display: inline-block;
}

.hero-popup-text {
    color: white;
    font-size: 16px;
    line-height: 1.6;
}

/* ===== 页脚（深钴蓝渐变） ===== */
.footer {
    background: linear-gradient(180deg, var(--cobalt) 0%, var(--cobalt-dark) 100%);
    color: white;
    padding: 60px 24px 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-icon {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cobalt);
    font-weight: 700;
    font-size: 20px;
}

.footer-logo-text {
    font-family: 'DM Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: white;
}

.footer-slogan {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links-list a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links-list a:hover {
    color: white;
}

.footer-bottom {
    background: var(--cobalt-dark);
    margin: 0 -24px;
    padding: 20px 24px;
    text-align: center;
}

.footer-copyright {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-copyright a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-copyright a:hover {
    text-decoration: underline;
}

/* ===== 公共组件 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-page);
    color: var(--cobalt);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-badge.safe {
    background: rgba(5, 150, 105, 0.1);
    color: var(--green-safe);
}

.section-badge.instant {
    background: rgba(217, 119, 6, 0.1);
    color: var(--gold-instant);
}

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

.section-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 700px;
    line-height: 1.7;
    margin-bottom: 40px;
}

/* 深钴蓝卡片 */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
    border-top: 4px solid var(--cobalt);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.card.safe-card {
    border-top-color: var(--green-safe);
}

.card.instant-card {
    border-top-color: var(--gold-instant);
}

.card-body {
    padding: 24px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    border-bottom: 3px solid var(--green-safe);
}

/* 优势卡片网格 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

.advantage-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border-top: 4px solid var(--cobalt);
    position: relative;
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.advantage-card.safe {
    border-top-color: var(--green-safe);
}

.advantage-card.instant {
    border-top-color: var(--gold-instant);
}

.advantage-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.advantage-icon.safe {
    background: rgba(5, 150, 105, 0.1);
}

.advantage-icon.instant {
    background: rgba(217, 119, 6, 0.1);
}

.advantage-icon.cobalt {
    background: rgba(30, 77, 123, 0.1);
}

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

.advantage-desc {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 产品卡片 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.product-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
    border-top: 4px solid var(--cobalt);
}

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

.product-header {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    padding: 32px;
    text-align: center;
    color: white;
}

.product-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin: 0 auto 16px;
}

.product-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.product-model {
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    opacity: 0.8;
}

.product-body {
    padding: 24px;
}

.product-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.product-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
}

.product-tag.safe {
    background: rgba(5, 150, 105, 0.1);
    color: var(--green-safe);
}

.product-tag.instant {
    background: rgba(217, 119, 6, 0.1);
    color: var(--gold-instant);
}

.product-features {
    list-style: none;
    margin-bottom: 20px;
}

.product-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.product-features li::before {
    content: '✓';
    color: var(--cobalt);
    font-weight: 700;
}

/* 对比表格 */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.compare-table th,
.compare-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--bg-page);
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.compare-table td {
    font-size: 14px;
    color: var(--text-muted);
}

.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table .brand-col {
    font-weight: 600;
    color: var(--text-dark);
}

.compare-highlight {
    color: var(--cobalt);
    font-weight: 600;
}

.compare-safe {
    color: var(--green-safe);
    font-weight: 600;
}

.compare-instant {
    color: var(--gold-instant);
    font-weight: 600;
}

/* FAQ手风琴 */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

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

.faq-question:hover {
    color: var(--cobalt);
}

.faq-icon {
    transition: var(--transition);
    font-size: 20px;
    color: var(--cobalt);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

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

.faq-answer-content {
    padding: 0 24px 20px;
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 表单样式 */
.form-group {
    margin-bottom: 16px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--cobalt);
    box-shadow: 0 0 0 3px rgba(30, 77, 123, 0.1);
}

.form-select {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: white;
    cursor: pointer;
}

.form-select:focus {
    outline: none;
    border-color: var(--cobalt);
    box-shadow: 0 0 0 3px rgba(30, 77, 123, 0.1);
}

/* CTA区域 */
.cta-section {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    padding: 80px 24px;
    text-align: center;
}

.cta-title {
    font-size: 36px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-size: 16px;
    font-weight: 500;
}

.cta-form {
    max-width: 500px;
    margin: 0 auto;
    background: var(--cobalt-dark);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.cta-form .form-input,
.cta-form .form-select {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.cta-form .form-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.cta-form .form-input:focus {
    border-color: var(--gold-instant);
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.2);
}

.cta-form .form-select {
    color: white;
}

.cta-form .form-select option {
    color: var(--text-dark);
}

.cta-note {
    margin-top: 16px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* 强调文字 */
.highlight-safe {
    color: var(--green-safe);
    font-weight: 600;
}

.highlight-instant {
    color: var(--gold-instant);
    font-weight: 600;
}

.highlight-cobalt {
    color: var(--cobalt);
    font-weight: 600;
}

/* 理由列表 */
.reasons-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.reason-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.reason-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.reason-number {
    font-family: 'DM Sans', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--cobalt);
    margin-bottom: 12px;
}

.reason-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

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

/* 四方对比卡片 */
.compare-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.compare-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.compare-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.compare-card-header {
    padding: 24px;
    text-align: center;
    color: white;
}

.compare-card-header.primary {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
}

.compare-card-header.purple {
    background: linear-gradient(135deg, #7C3AED, #6D28D9);
}

.compare-card-header.pink {
    background: linear-gradient(135deg, #EC4899, #DB2777);
}

.compare-card-header.indigo {
    background: linear-gradient(135deg, #4F46E5, #3730A3);
}

.compare-card-body {
    padding: 20px;
}

.compare-card-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}

.compare-card-item:last-child {
    border-bottom: none;
}

.compare-card-item.highlight {
    color: var(--cobalt);
    font-weight: 600;
}

.compare-card-item.warning {
    color: var(--text-light);
}

.compare-card-item .check {
    color: var(--green-safe);
}

.compare-card-item .warning-icon {
    color: var(--gold-instant);
}

/* ===== 首页专属样式 ===== */
.index-hero {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
}

/* ===== 安全可靠页专属 ===== */
.safe-hero {
    background: linear-gradient(135deg, var(--green-safe), var(--green-safe-dark));
}

.safe-hero .hero-title,
.safe-hero .hero-subtitle {
    color: white;
}

.safe-hero .hero-title {
    color: var(--cobalt-dark);
}

/* ===== 即开即用页专属 ===== */
.instant-hero {
    background: linear-gradient(135deg, var(--gold-instant), var(--gold-instant-dark));
}

.instant-hero .hero-title,
.instant-hero .hero-subtitle {
    color: white;
}

.instant-hero .hero-title {
    color: var(--cobalt-dark);
}

/* ===== 对比页专属 ===== */
.compare-hero {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
}

/* ===== 滚动动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

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

    .reasons-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar-nav {
        display: none;
    }

    .navbar-hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-animation-container {
        flex-direction: column;
        gap: 20px;
    }

    .hero-connect {
        transform: rotate(90deg);
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .advantages-grid,
    .advantages-grid-2 {
        grid-template-columns: 1fr;
    }

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

    .compare-cards {
        grid-template-columns: 1fr;
    }

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

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

    .compare-table {
        font-size: 12px;
    }

    .compare-table th,
    .compare-table td {
        padding: 12px 10px;
    }

    .cta-features {
        flex-direction: column;
        gap: 12px;
    }

    .cta-form {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 120px 16px 60px;
    }

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

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

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

    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 品牌卡片样式 */
.brand-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.brand-card-header {
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    color: white;
}

.brand-card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.brand-card-subtitle {
    font-size: 13px;
    opacity: 0.8;
}

.brand-card-body {
    padding: 20px 24px;
}

.brand-card-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.brand-card-item:last-child {
    border-bottom: none;
}

.brand-card-item .icon {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.brand-card-item .text {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
}

.brand-card-item.highlight .text {
    color: var(--cobalt);
    font-weight: 600;
}

/* 强调框 */
.highlight-box {
    background: linear-gradient(135deg, var(--bg-page), rgba(30, 77, 123, 0.05));
    border-left: 4px solid var(--cobalt);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-top: 24px;
}

.highlight-box.safe {
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.05), rgba(5, 150, 105, 0.02));
    border-left-color: var(--green-safe);
}

.highlight-box.instant {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.05), rgba(217, 119, 6, 0.02));
    border-left-color: var(--gold-instant);
}

.highlight-box p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* 结论框 */
.conclusion-box {
    background: linear-gradient(135deg, var(--cobalt), var(--cobalt-light));
    border-radius: var(--radius-lg);
    padding: 24px;
    color: white;
    margin-top: 32px;
}

.conclusion-box h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.conclusion-box p {
    font-size: 15px;
    line-height: 1.7;
    opacity: 0.9;
}