/* ================================================
   PRISM PEACH — 蜜桃视频 · 蜜桃直播 · 蜜桃映像
   Visual Identity: "液态糖果编辑部"
   Light background / coral-amber-cream palette
   ================================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #FFF9F2;
    color: #4A2B45;
    line-height: 1.6;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(255, 184, 77, 0.12) 0%, transparent 25%),
        radial-gradient(circle at 90% 70%, rgba(255, 107, 107, 0.10) 0%, transparent 30%),
        radial-gradient(circle at 70% 10%, rgba(78, 205, 196, 0.05) 0%, transparent 20%);
    background-attachment: fixed;
}

::selection {
    background: #FF6B6B;
    color: #FFF9F2;
}

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

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

.section:nth-child(even) {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(8px);
}

/* ---------- 背景装饰（液态网格） ---------- */
.section::before {
    content: '';
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
    z-index: 0;
    pointer-events: none;
}

.section:nth-child(odd)::before {
    background: #FFB84D;
    top: 40px;
    right: -120px;
}

.section:nth-child(even)::before {
    background: #FF6B6B;
    bottom: 20px;
    left: -160px;
}

.container > * {
    position: relative;
    z-index: 1;
}

/* ---------- 导航 — 液态玻璃胶囊 ---------- */
.site-header {
    position: fixed;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 1280px;
    z-index: 1000;
    background: rgba(255, 249, 242, 0.75);
    backdrop-filter: blur(20px) saturate(1.6);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 28px;
    box-shadow: 0 8px 32px rgba(74, 43, 69, 0.08);
    transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header:hover {
    background: rgba(255, 249, 242, 0.92);
    box-shadow: 0 12px 40px rgba(255, 107, 107, 0.12);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.35rem;
    text-decoration: none;
    color: #4A2B45;
    letter-spacing: -0.03em;
}

.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    background: linear-gradient(135deg, #FF6B6B 0%, #FFB84D 100%);
    color: #FFF;
    box-shadow: 0 4px 14px rgba(255, 107, 107, 0.35);
    transform: rotate(-8deg);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover .logo-icon {
    transform: rotate(8deg) scale(1.15);
}

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

.main-nav a {
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    color: #4A2B45;
    padding: 8px 18px;
    border-radius: 20px;
    transition: all 0.25s ease;
    position: relative;
    letter-spacing: 0.04em;
}

.main-nav a:not(.nav-cta):hover {
    background: rgba(255, 184, 77, 0.2);
    color: #D15B4A;
    transform: translateY(-1px);
}

.nav-cta {
    padding: 10px 26px;
    border-radius: 24px;
    color: #FFF !important;
    font-weight: 700;
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    box-shadow: 0 4px 16px rgba(255, 107, 107, 0.35);
    transition: all 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.5);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    border: none;
    background: rgba(255, 107, 107, 0.12);
    color: #FF6B6B;
    font-size: 1.4rem;
    cursor: pointer;
    transition: 0.3s;
    align-items: center;
    justify-content: center;
}

/* ---------- Hero — 超大字重 + 液态波浪 ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    background:
        radial-gradient(ellipse at 15% 80%, rgba(255, 184, 77, 0.20) 0%, transparent 45%),
        radial-gradient(ellipse at 85% 20%, rgba(255, 107, 107, 0.18) 0%, transparent 45%),
        linear-gradient(180deg, #FFF9F2 0%, #FFFDF9 100%);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 120px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 1440 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,64L80,74.7C160,85,320,107,480,117.3C640,128,800,107,960,96C1120,85,1280,75,1360,69.3L1440,64L1440,120L1360,120C1280,120,1120,120,960,120C800,120,640,120,480,120C320,120,160,120,80,120L0,120Z' fill='%23fffdf9'/%3E%3C/svg%3E") bottom center no-repeat;
    background-size: cover;
    z-index: 2;
    pointer-events: none;
}

.hero-content {
    max-width: 840px;
    position: relative;
    z-index: 3;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 6px 20px;
    border-radius: 30px;
    margin-bottom: 22px;
    background: rgba(255, 107, 107, 0.1);
    color: #FF6B6B;
    border: 1px solid rgba(255, 107, 107, 0.2);
    letter-spacing: 2px;
    text-transform: uppercase;
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-size: clamp(2.6rem, 6.5vw, 5.2rem);
    font-weight: 900;
    line-height: 1.08;
    margin-bottom: 24px;
    letter-spacing: -0.04em;
    color: #4A2B45;
    position: relative;
}

.hero h1 .highlight {
    position: relative;
    white-space: nowrap;
    background: linear-gradient(120deg, #FF6B6B 0%, #FFB84D 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero h1 .highlight::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 0;
    width: 100%;
    height: 12px;
    background: url("data:image/svg+xml,%3Csvg width='120' height='12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 8 Q30 2 60 9 T120 6' stroke='%23FFB84D' stroke-width='3' fill='none' opacity='0.5'/%3E%3C/svg%3E") repeat-x bottom;
    background-size: 120px 12px;
    transform: rotate(-3deg);
}

.hero p {
    font-size: 1.15rem;
    opacity: 0.75;
    max-width: 580px;
    margin-bottom: 36px;
    line-height: 1.8;
    color: #5A3D55;
}

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

/* ---------- 按钮 — 糖果釉感 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    font-size: 0.95rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    color: #FFF;
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    box-shadow: 0 8px 24px rgba(255, 107, 107, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(255, 107, 107, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid #FFB84D;
    color: #D15B4A;
}

.btn-outline:hover {
    background: rgba(255, 184, 77, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 184, 77, 0.2);
}

/* ---------- 标签/标题 — 编辑风 ---------- */
.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 4px;
    margin-bottom: 14px;
    color: #FF6B6B;
    text-transform: uppercase;
    padding: 4px 0;
    border-bottom: 2px solid #FFB84D;
    padding-bottom: 6px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 3rem);
    font-weight: 900;
    margin-bottom: 16px;
    color: #4A2B45;
    line-height: 1.2;
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
}

.section-title::before {
    content: '●';
    font-size: 0.4em;
    vertical-align: middle;
    margin-right: 8px;
    color: #FFB84D;
    animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.section-desc {
    max-width: 640px;
    opacity: 0.75;
    margin-bottom: 48px;
    font-size: 1.05rem;
    color: #5A3D55;
}

/* ---------- 卡片网格 — 有机异形卡片 ---------- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: 24px;
    padding: 36px 28px;
    background: #FFFFFF;
    border: 2px solid transparent;
    background: linear-gradient(#FFF9F2, #FFF9F2) padding-box, linear-gradient(135deg, #FFB84D, #FF6B6B, #4ECDC4) border-box;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.category-card::after {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,184,77,0.15) 0%, transparent 70%);
    transition: transform 0.6s ease;
}

.category-card:hover {
    transform: translateY(-6px) rotate(-1deg);
    box-shadow: 0 20px 40px rgba(255, 107, 107, 0.14);
}

.category-card:hover::after {
    transform: scale(2.2);
}

.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: linear-gradient(135deg, #FFF3E8, #FFE0CB);
    transition: all 0.4s ease;
}

.category-card:nth-child(2) .card-icon {
    background: linear-gradient(135deg, #E8FFF8, #D1F7EF);
}

.category-card:nth-child(3) .card-icon {
    background: linear-gradient(135deg, #FFE8F0, #FFD6E8);
}

.category-card:nth-child(4) .card-icon {
    background: linear-gradient(135deg, #EEF0FF, #E0E4FF);
}

.card-icon {
    background: linear-gradient(135deg, #FFF3E8, #FFE0CB);
}

.category-card:hover .card-icon {
    transform: scale(1.1) rotate(-6deg);
}

.category-card h3 {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: #4A2B45;
}

.category-card p {
    font-size: 0.92rem;
    opacity: 0.65;
    line-height: 1.6;
    margin-bottom: 18px;
    color: #5A3D55;
}

.card-link {
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    color: #FF6B6B;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.3s ease;
}

.card-link:hover {
    gap: 12px;
    color: #D15B4A;
}

/* ---------- 特性块 — 杂志排版错位栅格 ---------- */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.feature-image {
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 24px 48px rgba(255, 107, 107, 0.12);
    transform: rotate(1.5deg);
    transition: transform 0.5s ease;
}

.feature-block:nth-child(even) .feature-image {
    transform: rotate(-2deg);
    order: 2;
}

.feature-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(229deg, rgba(255,107,107,0.2) 0%, rgba(255,184,77,0.1) 50%, transparent);
    z-index: 1;
    pointer-events: none;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.feature-text {
    padding: 20px 0;
}

.feature-text h3 {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 14px;
    color: #4A2B45;
    letter-spacing: -0.02em;
}

.feature-text p {
    margin-bottom: 20px;
    opacity: 0.7;
    font-size: 1rem;
    color: #5A3D55;
}

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

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.feature-list li::before {
    content: '✓';
    font-weight: 800;
    color: #FFB84D;
    background: rgba(255, 184, 77, 0.15);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}

/* ---------- 数据条 — 果糖数字卡 ---------- */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
    text-align: center;
    position: relative;
}

.stats-bar::before {
    content: '"';
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 200px;
    color: rgba(255, 184, 77, 0.15);
    font-family: Georgia, serif;
    line-height: 1;
    pointer-events: none;
}

.stat-item {
    padding: 40px 20px;
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.stat-item::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(255, 107, 107, 0.1) 0%, transparent 70%);
}

.stat-item:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 107, 107, 0.3);
    box-shadow: 0 16px 32px rgba(255, 107, 107, 0.1);
}

.stat-number {
    font-size: 3.2rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, #FF6B6B, #FFB84D);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-top: 10px;
    font-weight: 600;
    color: #5A3D55;
}

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

.content-wall-item {
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.6);
    background: #FFF;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    background: linear-gradient(180deg, #FFF9F2 0%, #FFF 100%);
}

.content-wall-item:nth-child(2n) {
    transform: translateY(20px);
}

.content-wall-item:nth-child(3n) {
    transform: translateY(-10px);
}

.content-wall-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 24px 48px rgba(255, 107, 107, 0.15);
    z-index: 2;
}

.content-wall-item img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.content-wall-body {
    padding: 24px 24px 28px;
}

.content-wall-body .tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(255, 107, 107, 0.1);
    color: #FF6B6B;
    margin-bottom: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.content-wall-body h3 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: #4A2B45;
    line-height: 1.4;
}

.content-wall-body p {
    font-size: 0.9rem;
    opacity: 0.65;
    line-height: 1.5;
    color: #5A3D55;
}

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

.faq-item {
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(6px);
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-item:hover {
    border-color: rgba(255, 107, 107, 0.3);
    transform: translateX(6px);
    box-shadow: 0 4px 16px rgba(255, 107, 107, 0.06);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.05rem;
    color: #4A2B45;
    letter-spacing: 0.01em;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.6rem;
    font-weight: 400;
    color: #FFB84D;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    line-height: 1;
}

.faq-item.open .faq-question::after {
    content: '–';
    transform: rotate(180deg);
    color: #FF6B6B;
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    opacity: 0.75;
    line-height: 1.7;
    color: #5A3D55;
    font-size: 0.98rem;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeSlide 0.35s ease-out;
}

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

.faq-item.open {
    border-color: rgba(255, 184, 77, 0.5);
    background: rgba(255, 249, 242, 0.9);
}

/* ---------- CTA横幅 — 全宽果酱条 ---------- */
.cta-banner {
    padding: 72px 32px;
    text-align: center;
    border-radius: 40px;
    color: #FFF;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 50%, #FFB84D 100%);
    box-shadow: 0 24px 60px rgba(255, 107, 107, 0.35);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 40%);
    pointer-events: none;
}

.cta-banner h2 {
    color: #FFF;
    font-size: 2.4rem;
    font-weight: 900;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.03em;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 500px;
    margin: 0 auto 32px;
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary {
    background: #FFF;
    color: #FF6B6B;
    box-shadow: 0 8px 24px rgba(74, 43, 69, 0.2);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 30px rgba(74, 43, 69, 0.3);
    color: #D15B4A;
}

/* ---------- 页脚 — 奶油质感 ---------- */
.site-footer {
    padding: 68px 0 28px;
    border-top: 1px solid rgba(255, 107, 107, 0.08);
    position: relative;
    background: linear-gradient(180deg, #FFF9F2 0%, #FDF2E7 100%);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 20px;
}

.footer-brand {
    padding-right: 20px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.92rem;
    opacity: 0.7;
    line-height: 1.7;
    color: #5A3D55;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: #4A2B45;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    background: linear-gradient(90deg, #FF6B6B, #FFB84D);
    border-radius: 4px;
}

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

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

.footer-col ul a {
    text-decoration: none;
    color: #5A3D55;
    font-size: 0.92rem;
    opacity: 0.75;
    transition: all 0.25s ease;
}

.footer-col ul a:hover {
    color: #FF6B6B;
    opacity: 1;
    padding-left: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(74, 43, 69, 0.06);
    margin-top: 36px;
    padding-top: 22px;
    text-align: center;
    font-size: 0.88rem;
    color: #5A3D55;
    opacity: 0.65;
}

/* ---------- 工具类 ---------- */
.text-accent {
    color: #FF6B6B;
    font-weight: 700;
}

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

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.7;
    line-height: 1.7;
    text-align: center;
    font-size: 1.05rem;
    color: #5A3D55;
}

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

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

/* ---------- 排版装饰 — 数字序号 ---------- */
.section-number {
    font-size: 0.8rem;
    font-weight: 800;
    color: #FFB84D;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 8px;
}

/* 添加英文大编号背景 */
.section::after {
    content: attr(data-section);
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 10rem;
    font-weight: 900;
    color: rgba(74, 43, 69, 0.03);
    line-height: 1;
    z-index: 0;
    pointer-events: none;
    letter-spacing: -0.05em;
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar {
    width: 10px;
    background: #FFF9F2;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #FF6B6B, #FFB84D);
    border-radius: 20px;
}

::-webkit-scrollbar-track {
    background: #FFF9F2;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.6rem;
    }

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

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

    .hero {
        min-height: 90vh;
        padding-top: 120px;
    }

    .hero h1 {
        font-size: 2.6rem;
    }

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

    .feature-block:nth-child(even) .feature-image {
        order: 0;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .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: calc(100% + 12px);
        left: 0;
        width: 100%;
        background: rgba(255, 249, 242, 0.98);
        backdrop-filter: blur(20px);
        padding: 28px;
        border-radius: 24px;
        box-shadow: 0 20px 40px rgba(74, 43, 69, 0.12);
        gap: 8px;
        border: 1px solid rgba(255, 255, 255, 0.8);
    }

    .main-nav.open a {
        font-size: 1rem;
        padding: 12px 16px;
        border-radius: 14px;
    }

    .main-nav.open .nav-cta {
        margin-top: 8px;
        text-align: center;
    }

    .site-header {
        width: calc(100% - 24px);
        top: 8px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

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

    .content-wall-item:nth-child(2n),
    .content-wall-item:nth-child(3n) {
        transform: none;
    }

    .section::after {
        font-size: 6rem;
        top: 10px;
        right: 10px;
    }

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

    .cta-banner h2 {
        font-size: 1.8rem;
    }
}

@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 h1 {
        font-size: 2.2rem;
    }

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

    .stat-number {
        font-size: 2.4rem;
    }

    .section-title {
        font-size: 1.7rem;
    }

    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .header-inner {
        height: 60px;
    }

    .main-nav.open {
        top: calc(100% + 8px);
    }

    .btn {
        width: 100%;
    }

    .content-wall-item img {
        height: 200px;
    }

    .card-icon {
        width: 48px;
        height: 48px;
        border-radius: 14px;
        font-size: 1.3rem;
    }

    .feature-image {
        border-radius: 20px;
    }

    .cta-banner .btn-primary {
        width: auto;
    }
}

/* ---------- 微交互动画 ---------- */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

.float-element {
    animation: float 6s ease-in-out infinite;
}

/* 果冻质感 hover */
.jelly-hover {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.jelly-hover:hover {
    transform: scale(1.04) rotate(-0.5deg);
}

/* 手机适配补充 — 保证固定导航的视觉一致性 */
@media (max-width: 640px) {
    .site-header {
        width: calc(100% - 16px);
        border-radius: 20px;
    }

    .header-inner {
        padding: 0 14px;
    }

    .hero-eyebrow {
        font-size: 0.75rem;
        padding: 4px 14px;
    }

    .section-desc {
        margin-bottom: 32px;
    }

    .cta-banner {
        border-radius: 28px;
    }

    .container {
        padding: 0 18px;
    }
}

/* 无障碍与可访问性 */
a:focus, button:focus {
    outline: 2px solid #FFB84D;
    outline-offset: 4px;
    border-radius: 8px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}