/* ==========================================================================
   「免费看片」· Light Cinema 设计系统
   灵感：阳光艺廊中的电影节 — 奶油底色 × 珊瑚红 × 海沫青 × 琥珀金
   ========================================================================== */

/* 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: #FFF9F0;
    color: #2D2D2D;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

html { scroll-behavior: smooth; }

::selection { background: #FF5D5D; color: #fff; }

::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: #FFF9F0; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #FF5D5D, #FFB800);
    border-radius: 6px;
}

/* 动画关键帧 */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes floatItem {
    0%, 100% { transform: translateY(0) rotate(2deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

@keyframes reelSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.section { padding: 90px 0; position: relative; }
.section:nth-child(even) { background: #F6F0E9; }

/* ==========================================================================
   固定导航 — 胶片穿孔灵感
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 1000;
    background: rgba(255, 249, 240, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, #FF5D5D, #FFB800, #00C9A7) 1;
    box-shadow: 0 4px 30px rgba(255, 93, 93, 0.08);
}

.site-header::before {
    content: '';
    position: absolute;
    bottom: -3px; left: 0;
    width: 100%; height: 3px;
    background: repeating-linear-gradient(
        90deg,
        #FF5D5D 0px, #FF5D5D 5px,
        transparent 5px, transparent 15px,
        #FFB800 15px, #FFB800 20px,
        transparent 20px, transparent 30px,
        #00C9A7 30px, #00C9A7 35px,
        transparent 35px, transparent 45px
    );
    opacity: 0.55;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Logo — 播放按钮 + 胶片标识 */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.2rem;
    text-decoration: none;
    color: #2D2D2D;
    letter-spacing: -0.5px;
    transition: color 0.2s;
}

.logo:hover { color: #FF5D5D; }

.logo-icon {
    width: 40px; height: 40px;
    border-radius: 14px;
    background: linear-gradient(135deg, #FF5D5D, #FFB800);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    box-shadow: 0 4px 14px rgba(255, 93, 93, 0.4);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s;
}

.logo:hover .logo-icon {
    transform: rotate(-8deg) scale(1.08);
    box-shadow: 0 6px 20px rgba(255, 93, 93, 0.5);
}

/* 主导航 */
.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
    list-style: none;
}

.main-nav li { position: relative; }

.main-nav a {
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 500;
    color: #2D2D2D;
    padding: 4px 0;
    position: relative;
    transition: color 0.25s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -3px; left: 0;
    width: 0; height: 3px;
    background: linear-gradient(90deg, #FF5D5D, #FFB800);
    border-radius: 3px;
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:hover { color: #FF5D5D; }
.main-nav a:hover::after { width: 100%; }

.nav-cta {
    padding: 10px 24px;
    border-radius: 50px;
    color: #fff !important;
    font-weight: 600;
    background: linear-gradient(135deg, #FF5D5D, #FF7A5C);
    box-shadow: 0 4px 16px rgba(255, 93, 93, 0.35);
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
    transition: left 0.5s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 93, 93, 0.5);
}

.nav-cta:hover::before { left: 100%; }

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

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: #fff;
    color: #2D2D2D;
    font-size: 1.3rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.menu-toggle:hover {
    background: #FF5D5D;
    border-color: #FF5D5D;
    color: #fff;
}

/* ==========================================================================
   首页 Hero — 阳光剧场
   ========================================================================== */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 56px;
    padding: 140px 0 90px;
    position: relative;
    background:
        radial-gradient(circle at 82% 18%, rgba(255, 184, 0, 0.16) 0%, transparent 38%),
        radial-gradient(circle at 8% 75%, rgba(0, 201, 167, 0.12) 0%, transparent 32%),
        radial-gradient(circle at 50% 100%, rgba(255, 93, 93, 0.06) 0%, transparent 28%),
        #FFF9F0;
    overflow: hidden;
}

/* 胶片圆盘装饰 */
.hero::before {
    content: '';
    position: absolute;
    right: -80px;
    top: 12%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 42px solid rgba(255, 184, 0, 0.09);
    pointer-events: none;
    animation: floatItem 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    left: -50px;
    bottom: 12%;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 22px solid rgba(0, 201, 167, 0.09);
    pointer-events: none;
    animation: floatItem 8s ease-in-out infinite reverse;
}

/* 胶片打孔条带 — 装饰 */
.hero .container::after {
    content: '';
    position: absolute;
    bottom: 32px;
    right: 24px;
    width: 120px;
    height: 10px;
    background: repeating-linear-gradient(
        90deg,
        #FF5D5D 0px, #FF5D5D 3px,
        transparent 3px, transparent 8px
    );
    border-radius: 2px;
    opacity: 0.25;
    pointer-events: none;
}

.hero-content {
    flex: 1 1 480px;
    max-width: 640px;
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: 50px;
    background: rgba(0, 201, 167, 0.12);
    color: #00A98F;
    border: 1px solid rgba(0, 201, 167, 0.25);
    margin-bottom: 20px;
    animation: fadeUp 0.6s ease-out 0.1s both;
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-size: clamp(2.2rem, 4.5vw, 3.4rem);
    line-height: 1.15;
    font-weight: 900;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    color: #2D2D2D;
    animation: fadeUp 0.6s ease-out 0.2s both;
}

.hero h1 .text-accent {
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, #FF5D5D, #FF8A65);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.12rem;
    color: #6B6B6B;
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.8;
    animation: fadeUp 0.6s ease-out 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeUp 0.6s ease-out 0.4s both;
}

.hero-image {
    flex: 1 1 400px;
    position: relative;
    z-index: 2;
    border-radius: 24px;
    overflow: hidden;
    box-shadow:
        0 24px 60px rgba(255, 93, 93, 0.14),
        0 4px 12px rgba(0, 0, 0, 0.04);
    transform: rotate(2deg);
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    animation: fadeUp 0.8s ease-out 0.3s both;
}

.hero-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 70%, rgba(45, 45, 45, 0.12) 100%);
    z-index: 1;
    pointer-events: none;
}

.hero-image:hover {
    transform: rotate(0deg) scale(1.015);
    box-shadow:
        0 32px 80px rgba(255, 93, 93, 0.2),
        0 8px 20px rgba(0, 0, 0, 0.06);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

.hero-image:hover img { transform: scale(1.04); }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.2px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, #FF5D5D, #FF7A5C);
    box-shadow: 0 6px 20px rgba(255, 93, 93, 0.35);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(255, 93, 93, 0.5);
}

.btn-primary:hover::before { transform: translateX(100%); }

.btn-outline {
    background: transparent;
    border: 2px solid #2D2D2D;
    color: #2D2D2D;
}

.btn-outline:hover {
    background: #2D2D2D;
    color: #FFF9F0;
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(45, 45, 45, 0.15);
}

/* ==========================================================================
   标签 / 标题
   ========================================================================== */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #FF5D5D;
    padding: 6px 18px;
    background: rgba(255, 93, 93, 0.08);
    border-radius: 50px;
    margin-bottom: 16px;
    position: relative;
    transition: all 0.3s;
}

.section-label::before {
    content: '●';
    margin-right: 6px;
    font-size: 0.5rem;
    vertical-align: middle;
    color: #FF5D5D;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.25;
    margin-bottom: 14px;
    color: #2D2D2D;
}

.section-desc {
    max-width: 600px;
    opacity: 0.7;
    margin-bottom: 44px;
    line-height: 1.8;
    font-size: 1.02rem;
}

/* ==========================================================================
   产品分类卡片 — 电影票根质感
   ========================================================================== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.category-card {
    background: #fff;
    border-radius: 20px;
    padding: 32px 28px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* 卡片底部电影胶片色条 */
.category-card::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 100%; height: 5px;
    background: linear-gradient(90deg, #FF5D5D, #FFB800, #00C9A7);
    background-size: 300% 100%;
    transition: background-position 0.6s ease;
    border-radius: 0 0 20px 20px;
}

.category-card:hover::before { background-position: 100% 0; }

/* 票根缺口 */
.category-card::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -5px;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: #FFF9F0;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(255, 93, 93, 0.1);
}

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

.card-icon {
    width: 54px; height: 54px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    transition: transform 0.3s ease;
}

.category-card:nth-child(1) .card-icon {
    background: rgba(255, 93, 93, 0.12);
    color: #FF5D5D;
}

.category-card:nth-child(2) .card-icon {
    background: rgba(0, 201, 167, 0.12);
    color: #00A98F;
}

.category-card:nth-child(3) .card-icon {
    background: rgba(255, 184, 0, 0.14);
    color: #D69A00;
}

.category-card:nth-child(4) .card-icon {
    background: rgba(79, 120, 255, 0.12);
    color: #3B6FE0;
}

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

.category-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #2D2D2D;
}

.category-card p {
    font-size: 0.9rem;
    color: #6B6B6B;
    margin-bottom: 16px;
    line-height: 1.6;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: #FF5D5D;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s;
}

.card-link:hover { gap: 8px; }

/* ==========================================================================
   特性区 — 左右分栏描述
   ========================================================================== */
.feature-block {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 93, 93, 0.03), rgba(0, 201, 167, 0.03));
    pointer-events: none;
}

.feature-image:hover { transform: translateY(-4px); }

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

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

.feature-text h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 14px;
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.feature-text > p {
    color: #6B6B6B;
    margin-bottom: 20px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin-top: 16px;
}

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.98rem;
    color: #2D2D2D;
    transition: padding-left 0.3s;
}

.feature-list li:hover { padding-left: 6px; }

.feature-list li::before {
    content: '✓';
    font-weight: 700;
    width: 26px;
    height: 26px;
    background: rgba(0, 201, 167, 0.15);
    color: #00A98F;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
}

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

.stat-item {
    padding: 36px 24px;
    border-radius: 20px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 40px; height: 3px;
    border-radius: 0 0 4px 4px;
    background: linear-gradient(90deg, #FF5D5D, #FFB800);
    transition: width 0.3s;
}

.stat-item:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0, 0, 0, 0.07); }
.stat-item:hover::before { width: 70px; }

.stat-number {
    font-size: 2.6rem;
    font-weight: 900;
    letter-spacing: -2px;
    background: linear-gradient(135deg, #FF5D5D, #FFB800);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

/* 百/万等单位 */
.stat-number small {
    font-size: 1.4rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.85rem;
    color: #6B6B6B;
    margin-top: 8px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 600;
}

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

.content-wall-item {
    border-radius: 18px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.content-wall-item::before {
    content: '▶';
    position: absolute;
    top: 14px; right: 14px;
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FF5D5D;
    font-size: 0.85rem;
    opacity: 0;
    transform: scale(0.7);
    transition: all 0.3s ease;
    z-index: 3;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    pointer-events: none;
}

.content-wall-item:hover::before {
    opacity: 1;
    transform: scale(1);
}

.content-wall-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.content-wall-item:hover img { transform: scale(1.06); }

.content-wall-body {
    padding: 20px 22px 22px;
}

.content-wall-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: #2D2D2D;
    transition: color 0.3s;
}

.content-wall-item:hover .content-wall-body h3 { color: #FF5D5D; }

.content-wall-body p {
    color: #6B6B6B;
    font-size: 0.88rem;
    line-height: 1.6;
}

.content-wall-body .tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 30px;
    background: rgba(0, 201, 167, 0.1);
    color: #00A98F;
    margin-bottom: 8px;
}

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

.faq-item {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 16px;
    margin-bottom: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.faq-item:hover {
    border-color: rgba(255, 93, 93, 0.25);
    box-shadow: 0 4px 20px rgba(255, 93, 93, 0.06);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #2D2D2D;
    transition: color 0.3s;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.6rem;
    font-weight: 300;
    color: #FF5D5D;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.open .faq-question {
    color: #FF5D5D;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.7;
    color: #2D2D2D;
    line-height: 1.8;
    font-size: 0.95rem;
    border-top: 1px dashed rgba(0, 0, 0, 0.06);
    padding-top: 16px;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeUp 0.4s ease;
}

/* ==========================================================================
   CTA 横幅 — 聚光灯
   ========================================================================== */
.cta-banner {
    padding: 64px 24px;
    text-align: center;
    border-radius: 28px;
    background: linear-gradient(135deg, #FF5D5D, #FF7A5C, #FF8A65);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 24px 60px rgba(255, 93, 93, 0.35),
        0 4px 12px rgba(0, 0, 0, 0.06);
}

/* 装饰圆环 */
.cta-banner::before,
.cta-banner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    pointer-events: none;
}

.cta-banner::before {
    width: 180px; height: 180px;
    top: -60px; left: -40px;
    animation: reelSpin 24s linear infinite;
}

.cta-banner::after {
    width: 260px; height: 260px;
    bottom: -90px; right: -50px;
    border-style: dashed;
    animation: reelSpin 36s linear infinite reverse;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
    letter-spacing: -1px;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 480px;
    margin: 0 auto 28px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary {
    background: #fff;
    color: #FF5D5D;
    box-shadow: 0 4px 20px rgba(45, 45, 45, 0.12);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(45, 45, 45, 0.2);
}

/* ==========================================================================
   页脚 — 温暖奶油色
   ========================================================================== */
.site-footer {
    padding: 64px 0 28px;
    background: linear-gradient(180deg, #FFF9F0, #FFF0E6);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
}

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

.footer-brand {
    max-width: 320px;
}

.footer-brand .logo {
    margin-bottom: 14px;
}

.footer-brand p {
    color: #6B6B6B;
    font-size: 0.92rem;
    line-height: 1.8;
    margin-top: 12px;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: #FF5D5D;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 24px; height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, #FF5D5D, #FFB800);
}

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

.footer-col li {
    padding: 5px 0;
    list-style: none;
}

.footer-col a {
    color: #6B6B6B;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.25s ease;
    position: relative;
}

.footer-col a:hover {
    color: #FF5D5D;
    padding-left: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: #6B6B6B;
    letter-spacing: 0.5px;
}

.footer-bottom a {
    color: #FF5D5D;
    text-decoration: none;
    font-weight: 500;
}

/* ==========================================================================
   工具类
   ========================================================================== */
.text-accent {
    color: #FF5D5D;
}

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

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    color: #6B6B6B;
    line-height: 1.8;
}

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

/* 通用焦点样式 */
a:focus-visible,
button:focus-visible {
    outline: 3px solid rgba(0, 201, 167, 0.5);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ==========================================================================
   响应式 — 移动端
   ========================================================================== */
@media (max-width: 768px) {
    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

    .main-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        background: rgba(255, 249, 240, 0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 16px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        border-bottom: 3px solid #FF5D5D;
        align-items: flex-start;
    }

    .main-nav.open li {
        width: 100%;
    }

    .main-nav.open a {
        display: block;
        width: 100%;
        padding: 10px 0;
        font-size: 1rem;
    }

    .main-nav.open .nav-cta {
        margin-top: 8px;
        width: auto;
    }

    .hero {
        padding: 110px 0 70px;
        gap: 40px;
    }

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

    .section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .cta-banner {
        padding: 48px 20px;
        border-radius: 20px;
    }

    .cta-banner::before {
        width: 120px; height: 120px;
    }

    .cta-banner::after {
        width: 160px; height: 160px;
    }

    .footer-brand {
        grid-column: 1 / -1;
        max-width: none;
    }
}

@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;
        width: 100%;
    }

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

    .hero h1 {
        font-size: 1.8rem;
        letter-spacing: -0.5px;
    }

    .hero p {
        font-size: 1rem;
    }

    .section {
        padding: 56px 0;
    }

    .stats-bar {
        gap: 16px;
    }

    .stat-item {
        padding: 24px 16px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .cta-banner h2 {
        font-size: 1.6rem;
    }

    .footer-bottom {
        font-size: 0.75rem;
    }
}