/* ============================================================
   九色视频 · 九色光影设计系统
   风格：暖白基底 × 九色光晕 × 有机形态
   ============================================================ */

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

:root {
    /* 九色 */
    --c1: #FF5E5B;
    --c2: #FF8A5B;
    --c3: #FFD166;
    --c4: #06D6A0;
    --c5: #4ECDC4;
    --c6: #5B8DEF;
    --c7: #9B5DE5;
    --c8: #F15BB5;
    --c9: #00BBF9;

    /* 基础色 */
    --bg: #FFF9F0;
    --bg-alt: #FFF4EB;
    --card: #FFFFFF;
    --text: #1E1E2E;
    --muted: #7A7A85;

    /* 渐变 */
    --grad-9: linear-gradient(135deg, var(--c1), var(--c2), var(--c3),
                    var(--c4), var(--c5), var(--c6),
                    var(--c7), var(--c8), var(--c9));
    --grad-hero: linear-gradient(145deg, #FFF0E8, #F5F0FF 60%, #E8F8F5);
    --grad-main: linear-gradient(135deg, var(--c1), var(--c2));
    --grad-cta: linear-gradient(135deg, var(--c1), var(--c8), var(--c7));

    /* 阴影 */
    --shadow-sm: 0 2px 12px rgba(30, 30, 46, 0.05);
    --shadow-md: 0 8px 32px rgba(30, 30, 46, 0.08);
    --shadow-lg: 0 20px 60px rgba(255, 94, 91, 0.12);

    /* 圆角 */
    --radius: 20px;
    --radius-sm: 12px;
}

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: var(--c1);
    color: #fff;
}

/* ---------- 核心布局 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.section:nth-child(even) {
    background: var(--bg-alt);
}

/* ---------- 导航栏 ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 249, 240, 0.82);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border-bottom: none;
    box-shadow: 0 1px 0 rgba(30, 30, 46, 0.04),
                0 12px 32px rgba(30, 30, 46, 0.03);
}

.site-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--grad-9);
    opacity: 0.5;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--text);
    letter-spacing: -0.02em;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.85;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 900;
    color: #fff;
    background: var(--grad-9);
    box-shadow: 0 4px 16px rgba(255, 94, 91, 0.35);
    letter-spacing: 0;
    position: relative;
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: rotate(10deg) scale(1.05);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text);
    transition: color 0.25s;
    position: relative;
    padding: 4px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--grad-main);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.main-nav a:hover {
    color: var(--c1);
}

.main-nav a:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    border-radius: 50px;
    background: var(--grad-main);
    color: #fff !important;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(255, 94, 91, 0.3);
    transition: all 0.3s ease !important;
}

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

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 94, 91, 0.4);
    color: #fff !important;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 8px;
    position: relative;
    z-index: 1001;
}

.menu-toggle::before,
.menu-toggle::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--text);
    left: 10px;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.menu-toggle::before {
    top: 12px;
    box-shadow: 0 7px 0 var(--text);
}

.menu-toggle::after {
    top: 26px;
}

/* ---------- Hero 区域 ---------- */
.hero {
    min-height: 92vh;
    display: flex;
    align-items: center;
    background: var(--grad-hero);
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero::before {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 94, 91, 0.18) 0%, transparent 70%);
    top: -120px;
    right: -80px;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(77, 205, 196, 0.15) 0%, transparent 70%);
    bottom: -100px;
    left: 30%;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    position: relative;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: 50px;
    background: var(--grad-9);
    color: #fff;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(255, 94, 91, 0.25);
    animation: floatIn 0.6s ease both;
}

.hero h1 {
    font-size: clamp(2.6rem, 5vw, 3.6rem);
    line-height: 1.15;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text);
    position: relative;
}

.hero h1 .text-accent {
    background: var(--grad-9);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 900;
}

.hero p {
    font-size: 1.08rem;
    color: var(--muted);
    max-width: 540px;
    margin-bottom: 36px;
    line-height: 1.8;
}

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

/* Hero 装饰图形 */
.hero-image {
    border-radius: 38% 62% 60% 40% / 42% 36% 64% 58%;
    background: var(--grad-9);
    padding: 10px;
    box-shadow: var(--shadow-lg);
    position: relative;
    animation: blobFloat 8s ease-in-out infinite;
    min-height: 340px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: 20px;
    border-radius: inherit;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 1;
}

.hero-image::after {
    content: '▶';
    position: absolute;
    width: 88px;
    height: 88px;
    background: rgba(255, 255, 255, 0.92);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--c1);
    z-index: 2;
    box-shadow: 0 8px 30px rgba(255, 94, 91, 0.3);
    animation: pulse 2.4s ease infinite;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-image img {
    border-radius: inherit;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.92) contrast(1.02);
    mix-blend-mode: multiply;
    min-height: 340px;
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--grad-main);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 94, 91, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 94, 91, 0.45);
}

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

.btn-outline:hover {
    border-color: var(--c1);
    color: var(--c1);
    transform: translateY(-2px);
    background: rgba(255, 94, 91, 0.05);
}

/* ---------- 标签/标题 ---------- */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
    color: var(--c1);
    background: rgba(255, 94, 91, 0.08);
    padding: 6px 16px;
    border-radius: 50px;
}

.section-label::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--grad-main);
    box-shadow: 0 0 0 3px rgba(255, 94, 91, 0.15);
}

.section-title {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--text);
}

.section-desc {
    max-width: 620px;
    color: var(--muted);
    font-size: 1rem;
    margin-bottom: 48px;
    line-height: 1.8;
}

/* ---------- 卡片网格 ---------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: var(--radius);
    padding: 32px 28px;
    background: var(--card);
    border: 1px solid rgba(30, 30, 46, 0.04);
    box-shadow: var(--shadow-sm);
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--grad-9);
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.category-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.4rem;
    background: var(--grad-main);
    color: #fff;
    box-shadow: 0 6px 18px rgba(255, 94, 91, 0.25);
    transition: transform 0.3s ease;
}

.category-card:hover .card-icon {
    transform: scale(1.08) rotate(-5deg);
}

.category-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-card p {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 16px;
    line-height: 1.6;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--c1);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s ease;
}

.card-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.card-link:hover::after {
    transform: translateX(4px);
}

/* ---------- 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: var(--shadow-md);
    position: relative;
    background: var(--grad-soft, linear-gradient(135deg, #FFF1EC, #F5F0FF));
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.15));
    pointer-events: none;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.feature-image:hover img {
    transform: scale(1.03);
}

.feature-text {
    position: relative;
}

.feature-text h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.feature-text p {
    color: var(--muted);
    margin-bottom: 24px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin-top: 8px;
}

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text);
    font-weight: 500;
}

.feature-list li::before {
    content: '✓';
    font-weight: 800;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--grad-main);
    color: #fff;
    font-size: 0.75rem;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(255, 94, 91, 0.25);
}

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

.stat-item {
    padding: 32px 20px;
    border-radius: var(--radius);
    background: var(--card);
    border: 1px solid rgba(30, 30, 46, 0.04);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: var(--grad-9);
    border-radius: 0 0 4px 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.stat-item:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1;
    background: var(--grad-9);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 10px;
    font-weight: 500;
    letter-spacing: 1px;
}

/* ---------- 内容墙 ---------- */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--card);
    border: 1px solid rgba(30, 30, 46, 0.04);
    box-shadow: var(--shadow-sm);
    transition: all 0.35s ease;
    position: relative;
}

.content-wall-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.content-wall-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--grad-9);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.content-wall-item:hover::after {
    opacity: 1;
}

.content-wall-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
    display: block;
}

.content-wall-item:hover img {
    transform: scale(1.04);
}

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

.content-wall-body h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.content-wall-body p {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.6;
}

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

.faq-item {
    border: 1px solid rgba(30, 30, 46, 0.06);
    border-radius: 16px;
    margin-bottom: 12px;
    overflow: hidden;
    cursor: pointer;
    background: var(--card);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    padding-left: 0;
}

.faq-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--grad-9);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 0 4px 4px 0;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

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

.faq-item.open::before {
    opacity: 1;
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text);
    transition: color 0.3s ease;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--c1);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255, 94, 91, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-item.open .faq-question {
    color: var(--c1);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
    background: var(--grad-main);
    color: #fff;
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.75;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeSlide 0.3s ease both;
}

/* ---------- CTA 横幅 ---------- */
.cta-banner {
    padding: 72px 48px;
    text-align: center;
    border-radius: 28px;
    color: #fff;
    background: var(--grad-cta);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(255, 94, 91, 0.25);
}

.cta-banner::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    top: -60px;
    right: -40px;
}

.cta-banner::after {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    bottom: -40px;
    left: 20px;
}

.cta-banner h2 {
    color: #fff;
    font-size: 1.9rem;
    font-weight: 800;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.02em;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
    font-size: 0.95rem;
}

.cta-banner .btn-primary {
    background: #fff;
    color: var(--c1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

/* ---------- 页脚 ---------- */
.site-footer {
    padding: 64px 0 28px;
    background: var(--bg-alt);
    position: relative;
    border-top: 2px solid transparent;
    background-image: linear-gradient(var(--bg-alt), var(--bg-alt)),
                      var(--grad-9);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    background-size: 100% 100%, 100% 2px;
    background-position: 0 0, 0 0;
    background-repeat: no-repeat;
}

.site-footer .container {
    position: relative;
}

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

.footer-brand p {
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-top: 12px;
    max-width: 280px;
}

.footer-brand .logo {
    font-size: 1.1rem;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    color: var(--text);
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-col ul a:hover {
    color: var(--c1);
}

.footer-bottom {
    border-top: 1px solid rgba(30, 30, 46, 0.06);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--muted);
}

.footer-bottom a {
    color: var(--muted);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--c1);
}

/* ---------- 工具类 ---------- */
.text-accent {
    color: var(--c1);
}

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

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.8;
}

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

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

/* ---------- 动画 ---------- */
@keyframes blink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.06); }
}

@keyframes floatIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes blobFloat {
    0%, 100% { border-radius: 38% 62% 60% 40% / 42% 36% 64% 58%; }
    50% { border-radius: 55% 45% 40% 60% / 55% 55% 45% 45%; }
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4), 0 8px 30px rgba(255, 94, 91, 0.2); }
    50% { box-shadow: 0 0 0 18px rgba(255, 255, 255, 0), 0 8px 30px rgba(255, 94, 91, 0.3); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero {
        padding: 110px 0 60px;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }

    .hero {
        min-height: auto;
        padding: 100px 0 56px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .hero-image {
        max-width: 100%;
        min-height: 260px;
    }

    .hero-image img {
        min-height: 260px;
    }

    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(255, 249, 240, 0.97);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 20px;
        border-bottom: 2px solid rgba(255, 94, 91, 0.1);
        box-shadow: 0 20px 40px rgba(30, 30, 46, 0.08);
        z-index: 999;
    }

    .main-nav.open {
        display: flex;
        animation: fadeSlide 0.3s ease both;
    }

    .main-nav a {
        font-size: 1rem;
        padding: 10px 0;
        border-bottom: 1px solid rgba(30, 30, 46, 0.04);
        width: 100%;
    }

    .nav-cta {
        background: var(--grad-main);
        color: #fff !important;
        border-bottom: none;
        text-align: center;
        padding: 12px 20px;
        border-radius: 50px;
    }

    .menu-toggle {
        display: block;
    }

    .cta-banner {
        padding: 48px 24px;
    }

    .cta-banner h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

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

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

    .hero-image {
        border-radius: 30% 70% 55% 45% / 45% 35% 65% 55%;
    }

    .hero h1 {
        font-size: 1.9rem;
        line-height: 1.25;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .header-inner {
        padding: 0 16px;
    }

    .container {
        padding: 0 16px;
    }

    .cta-banner {
        padding: 40px 20px;
        border-radius: 20px;
    }
}

/* ---------- 打印与无障碍 ---------- */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}