@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

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

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #FFF9F2;
    color: #2D2A32;
    line-height: 1.7;
    background-image:
        radial-gradient(ellipse at 12% 8%, rgba(255, 199, 77, 0.14) 0%, transparent 55%),
        radial-gradient(ellipse at 88% 25%, rgba(46, 196, 160, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 95%, rgba(255, 107, 94, 0.10) 0%, transparent 40%);
    min-height: 100vh;
}

/* ============ 容器与区块 ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 110px 0;
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 107, 94, 0.06), transparent 70%);
    top: 50%;
    left: -120px;
    transform: translateY(-50%);
    pointer-events: none;
}

.section:nth-child(even) {
    background: linear-gradient(180deg, #F5F0E8 0%, #FFF9F2 100%);
}

.section:nth-child(even)::before {
    right: -120px;
    left: auto;
    background: radial-gradient(circle, rgba(46, 196, 160, 0.08), transparent 70%);
}

/* ============ 导航 ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 249, 242, 0.82);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(255, 107, 94, 0.08);
    box-shadow: 0 8px 32px rgba(45, 42, 50, 0.04);
    transition: box-shadow 0.3s ease;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 900;
    font-size: 1.3rem;
    text-decoration: none;
    color: #2D2A32;
    letter-spacing: -0.03em;
    position: relative;
    z-index: 2;
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #FF6B5E 0%, #F7C948 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 107, 94, 0.4), 0 0 0 4px rgba(255, 107, 94, 0.08);
    position: relative;
    overflow: hidden;
}

.logo-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), transparent 50%);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: #2D2A32;
    padding: 10px 20px;
    border-radius: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.main-nav a:hover {
    background: rgba(255, 107, 94, 0.08);
    color: #FF6B5E;
    transform: translateY(-1px);
}

.main-nav > li:last-child a {
    padding-right: 20px;
}

.nav-cta {
    padding: 10px 24px;
    border-radius: 24px;
    color: #fff !important;
    font-weight: 700;
    background: linear-gradient(135deg, #FF6B5E 0%, #FF8E7A 100%);
    box-shadow: 0 4px 20px rgba(255, 107, 94, 0.35);
    transition: all 0.3s ease !important;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 30px rgba(255, 107, 94, 0.45);
    background: linear-gradient(135deg, #FF5A4D 0%, #FF7E6D 100%);
    color: #fff !important;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: none;
    background: rgba(255, 107, 94, 0.1);
    border-radius: 14px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: background 0.2s;
}

.menu-toggle:hover {
    background: rgba(255, 107, 94, 0.2);
}

/* ============ Hero ============ */
.hero {
    min-height: 83vh;
    display: flex;
    align-items: center;
    padding-top: 76px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 199, 77, 0.15), transparent 60%);
    top: 10%;
    right: 5%;
    z-index: 0;
    animation: floatBubble 8s ease-in-out infinite alternate;
}

.hero::after {
    content: '▶';
    position: absolute;
    font-size: 200px;
    width: 200px;
    height: 200px;
    bottom: 8%;
    right: 20%;
    opacity: 0.03;
    color: #FF6B5E;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
    pointer-events: none;
    animation: pulsePlay 4s ease-in-out infinite;
}

@keyframes floatBubble {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-40px, -30px) scale(1.1); }
}

@keyframes pulsePlay {
    0%, 100% { transform: scale(1); opacity: 0.03; }
    50% { transform: scale(1.1); opacity: 0.05; }
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 20px;
    border-radius: 30px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #FF6B5E 0%, #F7C948 100%);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 107, 94, 0.3);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.6rem;
    line-height: 1.1;
    margin-bottom: 20px;
    font-weight: 900;
    letter-spacing: -0.04em;
    color: #2D2A32;
}

.hero h1 .text-accent {
    background: linear-gradient(135deg, #FF6B5E, #F7C948);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero p {
    font-size: 1.2rem;
    color: rgba(45, 42, 50, 0.72);
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.8;
}

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

.hero-image {
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    z-index: 2;
    background: linear-gradient(135deg, rgba(255, 107, 94, 0.08), rgba(46, 196, 160, 0.08));
    border: 1px solid rgba(255, 107, 94, 0.1);
    box-shadow: 0 20px 60px rgba(45, 42, 50, 0.08);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(0deg);
    box-shadow: 0 30px 80px rgba(255, 107, 94, 0.12);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.02em;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, #FF6B5E, #FF8E7A);
    box-shadow: 0 8px 30px rgba(255, 107, 94, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255, 107, 94, 0.45);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 107, 94, 0.4);
    color: #FF6B5E;
}

.btn-outline:hover {
    background: rgba(255, 107, 94, 0.08);
    border-color: #FF6B5E;
    transform: translateY(-3px);
}

/* ============ 标签/标题 ============ */
.section-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
    color: #FF6B5E;
    padding: 4px 14px;
    border-radius: 20px;
    background: rgba(255, 107, 94, 0.08);
}

.section-title {
    font-size: 2.6rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    color: #2D2A32;
    line-height: 1.2;
}

.section-desc {
    max-width: 600px;
    color: rgba(45, 42, 50, 0.7);
    margin-bottom: 48px;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ============ 卡片网格 ============ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 32px;
}

.category-card {
    border-radius: 24px;
    padding: 36px 28px;
    background: #FFFFFF;
    border: 1px solid rgba(45, 42, 50, 0.05);
    box-shadow: 0 4px 24px rgba(45, 42, 50, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #FF6B5E, #F7C948);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(255, 107, 94, 0.12);
    border-color: rgba(255, 107, 94, 0.15);
}

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

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    background: rgba(46, 196, 160, 0.1);
    transition: transform 0.3s ease;
}

.category-card:hover .card-icon {
    transform: scale(1.1) rotate(-8deg);
}

.category-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 0.9rem;
    color: rgba(45, 42, 50, 0.6);
    margin-bottom: 16px;
    line-height: 1.6;
}

.card-link {
    font-weight: 700;
    font-size: 0.88rem;
    text-decoration: none;
    color: #FF6B5E;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s ease;
}

.card-link:hover {
    gap: 10px;
}

/* ============ 特性块 ============ */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(46, 196, 160, 0.12);
    border: 1px solid rgba(46, 196, 160, 0.1);
    transform: perspective(1000px) rotateY(5deg);
    transition: transform 0.4s ease;
}

.feature-image:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
}

.feature-text {
    position: relative;
}

.feature-text h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.feature-text > p {
    color: rgba(45, 42, 50, 0.7);
    margin-bottom: 24px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 1px dashed rgba(45, 42, 50, 0.08);
    transition: padding-left 0.3s ease;
}

.feature-list li:hover {
    padding-left: 8px;
}

.feature-list li::before {
    content: '✓';
    font-weight: 800;
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, #2EC4A0, #6EE7CF);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8rem;
    flex-shrink: 0;
    box-shadow: 0 2px 10px rgba(46, 196, 160, 0.3);
}

/* ============ 数据条 ============ */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item {
    padding: 36px 20px;
    border-radius: 24px;
    background: #FFFFFF;
    border: 1px solid rgba(45, 42, 50, 0.05);
    box-shadow: 0 8px 30px rgba(45, 42, 50, 0.04);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 107, 94, 0.04);
    transition: transform 0.4s ease;
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(255, 107, 94, 0.10);
}

.stat-item:hover::after {
    transform: scale(1.5);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, #FF6B5E, #F7C948);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    display: block;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(45, 42, 50, 0.6);
    margin-top: 8px;
    font-weight: 500;
}

/* ============ 内容墙 ============ */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: 22px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(45, 42, 50, 0.05);
    box-shadow: 0 4px 20px rgba(45, 42, 50, 0.03);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.content-wall-item:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 24px 60px rgba(255, 107, 94, 0.12);
}

.content-wall-item img {
    width: 100%;
    height: 210px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.content-wall-item:hover img {
    transform: scale(1.05);
}

.content-wall-body {
    padding: 22px 24px;
}

.content-wall-body h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.content-wall-body p {
    font-size: 0.88rem;
    color: rgba(45, 42, 50, 0.6);
    line-height: 1.6;
}

.content-wall-body .meta {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.8rem;
    color: rgba(45, 42, 50, 0.5);
}

/* ============ FAQ ============ */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid rgba(45, 42, 50, 0.08);
    border-radius: 18px;
    margin-bottom: 12px;
    background: #fff;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 12px rgba(45, 42, 50, 0.02);
}

.faq-item:hover {
    border-color: rgba(255, 107, 94, 0.2);
    box-shadow: 0 6px 24px rgba(255, 107, 94, 0.06);
}

.faq-item.open {
    border-color: rgba(255, 107, 94, 0.25);
    box-shadow: 0 12px 36px rgba(255, 107, 94, 0.08);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    color: #2D2A32;
    transition: color 0.2s;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 400;
    color: #FF6B5E;
    transition: transform 0.3s ease;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 107, 94, 0.08);
    flex-shrink: 0;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
    background: #FF6B5E;
    color: #fff;
}

.faq-item .faq-question:hover {
    color: #FF6B5E;
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    color: rgba(45, 42, 50, 0.65);
    line-height: 1.8;
    font-size: 0.95rem;
    border-top: 1px dashed rgba(45, 42, 50, 0.06);
    margin-top: 4px;
    padding-top: 14px;
}

.faq-item.open .faq-answer {
    display: block;
}

/* ============ CTA 横幅 ============ */
.cta-banner {
    padding: 64px 48px;
    text-align: center;
    border-radius: 32px;
    background: linear-gradient(135deg, #FF6B5E 0%, #FF8E7A 30%, #F7C948 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(255, 107, 94, 0.3);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.cta-banner h2 {
    color: #fff;
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    z-index: 2;
    margin-bottom: 28px;
    font-size: 1.05rem;
}

.cta-banner .btn-primary {
    background: #fff;
    color: #FF6B5E;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    font-weight: 800;
    position: relative;
    z-index: 2;
    border: none;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

/* ============ 页脚 ============ */
.site-footer {
    padding: 64px 0 28px;
    background: linear-gradient(180deg, #FFF9F2 0%, #F0E8DC 100%);
    border-top: 1px solid rgba(45, 42, 50, 0.05);
}

.site-footer .container {
    padding: 0 24px;
}

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

.footer-brand h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.footer-brand p {
    font-size: 0.92rem;
    color: rgba(45, 42, 50, 0.65);
    line-height: 1.7;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, #FF6B5E, #F7C948);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul a {
    text-decoration: none;
    font-size: 0.9rem;
    color: rgba(45, 42, 50, 0.65);
    transition: all 0.3s ease;
}

.footer-col ul a:hover {
    color: #FF6B5E;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(45, 42, 50, 0.1);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(45, 42, 50, 0.5);
    padding-bottom: 8px;
}

.footer-bottom span {
    color: #FF6B5E;
    font-weight: 600;
}

/* ============ 工具类 ============ */
.text-accent {
    color: #FF6B5E;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.text-accent::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    opacity: 0.3;
}

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

.seo-description {
    max-width: 640px;
    margin: 0 auto 56px;
    color: rgba(45, 42, 50, 0.68);
    line-height: 1.8;
    font-size: 1.02rem;
}

.mt-0 {
    margin-top: 0 !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

/* ============ 装饰滚动条 ============ */
::selection {
    background: rgba(255, 107, 94, 0.2);
    color: #2D2A32;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #F5F0E8;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #FF6B5E, #F7C948);
    border-radius: 10px;
}

/* ============ 响应式 ============ */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero p {
        font-size: 1rem;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .cta-banner {
        padding: 40px 24px;
        border-radius: 24px;
    }
    .cta-banner h2 {
        font-size: 1.6rem;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: rgba(255, 249, 242, 0.98);
        padding: 24px;
        border-bottom: 1px solid rgba(255, 107, 94, 0.1);
        box-shadow: 0 20px 60px rgba(45, 42, 50, 0.1);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        z-index: 999;
        border-radius: 0 0 24px 24px;
    }
    .main-nav.open {
        display: flex;
    }
    .main-nav a {
        display: block;
        padding: 14px 20px;
        border-radius: 16px;
        text-align: center;
        font-size: 1rem;
    }
    .main-nav a:hover {
        background: rgba(255, 107, 94, 0.1);
    }
    .main-nav .nav-cta {
        text-align: center;
        margin-top: 8px;
    }
    .menu-toggle {
        display: flex;
    }
    .section-title {
        font-size: 2rem;
    }
    .cards-grid {
        gap: 20px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 18px;
    }
    .section {
        padding: 60px 0;
    }
    .hero {
        padding: 100px 0 60px;
    }
    .hero h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    .hero p {
        font-size: 0.94rem;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
    }
    .hero-image {
        margin-top: 32px;
    }
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }
    .stats-bar {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .stat-item {
        padding: 24px;
    }
    .stat-number {
        font-size: 2rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .cta-banner {
        padding: 36px 20px;
    }
    .cta-banner h2 {
        font-size: 1.4rem;
    }
    .cta-banner p {
        font-size: 0.9rem;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .section-desc {
        font-size: 0.95rem;
    }
    .header-inner {
        height: 64px;
    }
    .main-nav {
        top: 64px;
    }
    .logo {
        font-size: 1.1rem;
    }
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        border-radius: 12px;
    }
    .feature-text h3 {
        font-size: 1.2rem;
    }
    .feature-list li {
        font-size: 0.9rem;
    }
    .content-wall-item img {
        height: 180px;
    }
    .faq-item .faq-question {
        font-size: 0.95rem;
    }
    .faq-item .faq-answer {
        font-size: 0.88rem;
    }
    .footer-bottom {
        font-size: 0.78rem;
    }
}

/* ============ 高DPI下的精修 ============ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============ 额外装饰 ============ */
/* 胶囊形状的分隔线 */
.divider {
    height: 4px;
    max-width: 200px;
    margin: 24px 0;
    background: linear-gradient(90deg, #FF6B5E, #F7C948, #2EC4A0);
    border-radius: 4px;
}

.section-title + .section-desc {
    margin-top: -8px;
}

/* 模拟视频播放器的圆角装饰 */
.content-wall-item:first-child {
    background: linear-gradient(135deg, rgba(255, 107, 94, 0.04), rgba(247, 201, 72, 0.04));
}

/* 悬浮胶囊装饰 */
.category-card:nth-child(1) .card-icon {
    background: rgba(255, 107, 94, 0.12);
}

.category-card:nth-child(2) .card-icon {
    background: rgba(46, 196, 160, 0.12);
}

.category-card:nth-child(3) .card-icon {
    background: rgba(247, 201, 72, 0.12);
}

.category-card:nth-child(4) .card-icon {
    background: rgba(255, 107, 94, 0.12);
}

/* 字幕风格 */
.content-wall-body h4::before {
    content: '▍';
    color: #FF6B5E;
    margin-right: 6px;
}

/* 播放按钮微动画 */
.btn-primary::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 8px solid #fff;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    transition: transform 0.2s ease;
}

.btn-primary:hover::after {
    transform: scale(1.2);
}

/* 渐隐进入视觉提示 */
.section-label::before {
    content: '◈ ';
    font-size: 0.7em;
    vertical-align: middle;
}