/* ═══════════════════════════════════════════════════════════
   弦音阁 - 复古爵士酒吧风格
   ═══════════════════════════════════════════════════════════ */

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

:root {
    --ink: #1a1815;
    --cream: #f4f1ea;
    --cream-dark: #e8e4dc;
    --gold: #c49102;
    --gold-muted: #a67c00;
    --brown: #3d2817;
    --brown-light: #5d4037;
    --accent-red: #8b2e2e;
    
    --font-display: 'Playfair Display', 'Noto Serif SC', serif;
    --font-sans: 'Josefin Sans', 'PingFang SC', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--cream);
    color: var(--ink);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* 黑胶唱片纹理叠加 */
.vinyl-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-radial-gradient(
        circle at center,
        transparent 0,
        transparent 2px,
        rgba(0,0,0,0.03) 3px,
        rgba(0,0,0,0.03) 4px
    );
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
}

/* 颗粒噪点 */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9998;
    opacity: 0.05;
}

/* ═══════════════════════════════════════════════════════════
   品牌头部
   ═══════════════════════════════════════════════════════════ */

.main-header {
    background: var(--ink);
    color: var(--cream);
    padding: 60px 20px 40px;
    text-align: center;
    position: relative;
    border-bottom: 3px solid var(--gold);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.brand-mark {
    margin-bottom: 25px;
}

.logo-mark {
    width: 100px;
    height: 100px;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 5px var(--gold)); }
    50% { filter: drop-shadow(0 0 15px var(--gold)); }
}

.brand-name {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}

.cn-name {
    display: block;
    color: var(--gold);
}

.en-name {
    display: block;
    font-size: 0.4em;
    color: var(--cream-dark);
    letter-spacing: 0.3em;
    margin-top: 10px;
}

.tagline {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--cream-dark);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* ═══════════════════════════════════════════════════════════
   浮动导航
   ═══════════════════════════════════════════════════════════ */

.floating-nav {
    position: sticky;
    top: 0;
    background: var(--ink);
    z-index: 1000;
    border-bottom: 1px solid var(--brown-light);
}

.nav-list {
    display: flex;
    justify-content: center;
    list-style: none;
    max-width: 1000px;
    margin: 0 auto;
}

.nav-list li {
    flex: 1;
    max-width: 200px;
}

.nav-list a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 18px 10px;
    color: var(--cream-dark);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: all 0.3s;
    position: relative;
}

.nav-list a span:first-child {
    font-family: var(--font-sans);
    font-weight: 300;
    color: var(--gold);
}

.nav-list a:hover {
    background: var(--brown);
    color: var(--cream);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gold);
    transform: translateX(-50%);
    transition: width 0.3s;
}

.nav-list a:hover::after {
    width: 30px;
}

/* ═══════════════════════════════════════════════════════════
   Hero 区域
   ═══════════════════════════════════════════════════════════ */

.hero-section {
    background: var(--cream-dark);
    padding: 100px 20px;
    border-bottom: 1px solid var(--brown-light);
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    padding: 40px 0;
}

.hero-label {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--gold-muted);
    margin-bottom: 30px;
}

.hero-text h2 {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 30px;
    color: var(--ink);
}

.hero-text h2 em {
    font-style: italic;
    color: var(--accent-red);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--brown-light);
    margin-bottom: 40px;
    padding-left: 20px;
    border-left: 3px solid var(--gold);
}

.explore-btn {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    padding: 15px 35px;
    background: var(--ink);
    color: var(--cream);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: all 0.3s;
    border: 2px solid var(--ink);
}

.explore-btn:hover {
    background: transparent;
    color: var(--ink);
}

.explore-btn i {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

/* 黑胶唱片动画 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
}

.vinyl-spin {
    position: relative;
    width: 350px;
    height: 350px;
}

.vinyl-record {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--ink);
    position: relative;
    animation: spin 8s linear infinite;
    box-shadow: 
        0 0 0 10px var(--ink),
        0 0 0 12px var(--cream-dark),
        0 0 0 22px var(--ink),
        0 10px 40px rgba(0,0,0,0.3);
}

.vinyl-record::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: repeating-radial-gradient(
        circle at center,
        var(--gold) 0,
        var(--gold) 10px,
        var(--gold-muted) 11px,
        var(--gold-muted) 12px
    );
}

.vinyl-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: var(--cream);
    border-radius: 50%;
    border: 3px solid var(--ink);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════════════════════
   卖点区域
   ═══════════════════════════════════════════════════════════ */

.usp-section {
    background: var(--ink);
    padding: 50px 20px;
    border-bottom: 1px solid var(--brown-light);
}

.usp-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.usp-item {
    flex: 1;
    min-width: 250px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.usp-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--gold);
    font-weight: 700;
}

.usp-content h3 {
    color: var(--cream);
    font-size: 1.1rem;
    margin-bottom: 5px;
    letter-spacing: 0.1em;
}

.usp-content p {
    color: var(--cream-dark);
    font-size: 0.85rem;
}

.usp-divider {
    width: 1px;
    height: 60px;
    background: var(--brown-light);
}

/* ═══════════════════════════════════════════════════════════
   产品展示
   ═══════════════════════════════════════════════════════════ */

.products-section {
    padding: 100px 20px;
    background: var(--cream);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: var(--brown-light);
    margin-bottom: 15px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--ink);
    letter-spacing: 0.1em;
}

.products-showcase {
    max-width: 1200px;
    margin: 0 auto;
}

.product-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
    padding: 40px;
    background: var(--cream-dark);
    border: 1px solid var(--brown-light);
}

.product-frame {
    position: relative;
    padding: 20px;
    background: var(--cream);
    border: 3px solid var(--ink);
}

.product-frame img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    filter: sepia(20%) contrast(1.1);
    transition: filter 0.4s;
}

.product-frame:hover img {
    filter: sepia(0%) contrast(1);
}

.frame-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid var(--ink);
    transition: all 0.3s;
}

.frame-corner.tl { top: -5px; left: -5px; border-right: none; border-bottom: none; }
.frame-corner.tr { top: -5px; right: -5px; border-left: none; border-bottom: none; }
.frame-corner.bl { bottom: -5px; left: -5px; border-right: none; border-top: none; }
.frame-corner.br { bottom: -5px; right: -5px; border-left: none; border-top: none; }

.product-feature:hover .frame-corner {
    width: 30px;
    height: 30px;
}

.product-details {
    padding: 20px 0;
}

.product-cat {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--gold-muted);
    text-transform: uppercase;
    margin-bottom: 15px;
}

.product-details h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--ink);
    margin-bottom: 15px;
}

.product-desc {
    color: var(--brown-light);
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.price-display {
    display: flex;
    align-items: baseline;
    gap: 15px;
    margin-bottom: 20px;
}

.current {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent-red);
    font-weight: 700;
}

.original {
    font-size: 1rem;
    color: var(--brown-light);
    text-decoration: line-through;
}

.tone-display {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.tone-tag {
    padding: 6px 16px;
    background: var(--ink);
    color: var(--cream);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.listen-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: transparent;
    color: var(--ink);
    border: 2px solid var(--ink);
    cursor: pointer;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all 0.3s;
}

.listen-btn:hover {
    background: var(--ink);
    color: var(--cream);
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card.mini {
    position: relative;
    overflow: hidden;
    border: 2px solid var(--brown-light);
    transition: all 0.3s;
}

.product-card.mini:hover {
    transform: translateY(-5px);
    border-color: var(--gold);
}

.product-card.mini img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: grayscale(30%);
    transition: filter 0.4s;
}

.product-card.mini:hover img {
    filter: grayscale(0%);
}

.mini-info {
    padding: 15px;
    background: var(--ink);
    color: var(--cream);
}

.mini-info span {
    display: block;
    font-size: 0.8rem;
    margin-bottom: 5px;
}

.mini-info strong {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--gold);
}

/* ═══════════════════════════════════════════════════════════
   工艺展示
   ═══════════════════════════════════════════════════════════ */

.craft-section {
    padding: 100px 20px;
    background: var(--ink);
    color: var(--cream);
}

.craft-content {
    max-width: 1200px;
    margin: 0 auto 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.craft-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--gold-muted);
    margin-bottom: 20px;
}

.craft-content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 1.1;
    margin-bottom: 30px;
}

.craft-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--cream-dark);
    padding-left: 20px;
    border-left: 2px solid var(--gold);
}

.craft-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

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

.craft-stat .num {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--gold);
    font-weight: 700;
}

.craft-stat .label {
    font-size: 0.8rem;
    color: var(--cream-dark);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.craft-image {
    position: relative;
}

.craft-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    filter: sepia(30%) contrast(1.1);
}

.image-frame {
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    border: 2px solid var(--gold);
    pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   品牌故事
   ═══════════════════════════════════════════════════════════ */

.story-section {
    padding: 100px 20px;
    background: var(--cream-dark);
}

.story-header {
    text-align: center;
    margin-bottom: 60px;
}

.story-label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    color: var(--brown-light);
    margin-bottom: 15px;
}

.story-header h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--ink);
}

.story-content {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.story-text .lead {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--ink);
    margin-bottom: 25px;
    line-height: 1.6;
}

.story-text p {
    color: var(--brown);
    margin-bottom: 20px;
    line-height: 2;
}

.story-text .quote {
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--gold-muted);
    padding-left: 20px;
    border-left: 3px solid var(--gold);
    margin-top: 30px;
}

.story-visual img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    filter: sepia(20%);
    border: 1px solid var(--brown-light);
}

/* ═══════════════════════════════════════════════════════════
   音乐学院
   ═══════════════════════════════════════════════════════════ */

.academy-section {
    padding: 100px 20px;
    background: var(--cream);
}

.article-cards {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 30px;
}

.article-card {
    background: var(--cream-dark);
    border: 1px solid var(--brown-light);
    transition: all 0.3s;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.article-img {
    height: 200px;
    overflow: hidden;
}

.article-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: sepia(20%);
    transition: filter 0.4s, transform 0.4s;
}

.article-card:hover .article-img img {
    filter: sepia(0%);
    transform: scale(1.05);
}

.article-body {
    padding: 25px;
}

.article-cat {
    display: inline-block;
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    color: var(--gold-muted);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.article-body h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--ink);
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-body p {
    color: var(--brown);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.read-link {
    display: inline-block;
    color: var(--accent-red);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: gap 0.3s;
}

.read-link:hover {
    gap: 5px;
}

/* ═══════════════════════════════════════════════════════════
   用户评价
   ═══════════════════════════════════════════════════════════ */

.testimonial-section {
    padding: 100px 20px;
    background: var(--ink);
    color: var(--cream);
}

.testimonial-section .section-title {
    color: var(--cream);
}

.testimonial-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.testimonial-card {
    padding: 40px;
    background: var(--ink);
    border: 2px solid var(--gold);
    position: relative;
    color: var(--cream);
}

.quote-mark {
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--gold);
    line-height: 1;
    position: absolute;
    top: 20px;
    left: 30px;
    opacity: 0.3;
}

.testimonial-card p {
    font-size: 1rem;
    line-height: 2;
    margin-bottom: 25px;
    padding-left: 40px;
    font-style: italic;
    color: var(--cream);
}

.author {
    padding-left: 40px;
    color: var(--cream);
}

.author .name {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--gold);
}

.author .meta {
    font-size: 0.8rem;
    color: var(--cream-dark);
}

/* ═══════════════════════════════════════════════════════════
   服务支持
   ═══════════════════════════════════════════════════════════ */

.support-section {
    padding: 80px 20px;
    background: var(--cream);
    border-top: 1px solid var(--brown-light);
}

.support-grid {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.support-item {
    text-align: center;
    padding: 30px 20px;
}

.support-item i {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 15px;
}

.support-item h3 {
    font-size: 1rem;
    color: var(--ink);
    margin-bottom: 8px;
    letter-spacing: 0.1em;
}

.support-item p {
    font-size: 0.85rem;
    color: var(--brown-light);
}

/* ═══════════════════════════════════════════════════════════
   页脚
   ═══════════════════════════════════════════════════════════ */

.main-footer {
    background: var(--ink);
    color: var(--cream-dark);
    padding: 60px 20px 30px;
    border-top: 3px solid var(--gold);
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--gold);
    margin-bottom: 10px;
}

.footer-brand p {
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brown);
    color: var(--cream);
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--gold);
    color: var(--ink);
}

.footer-links h4 {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    color: var(--cream);
}

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

.footer-links li {
    margin-bottom: 12px;
    font-size: 0.9rem;
}

.footer-links a {
    color: var(--cream-dark);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--gold);
}

.footer-bottom {
    max-width: 1000px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid var(--brown-light);
    text-align: center;
    font-size: 0.85rem;
    color: var(--brown-light);
}

/* ═══════════════════════════════════════════════════════════
   响应式
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
    .hero-inner,
    .product-feature,
    .craft-content,
    .story-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-visual {
        order: -1;
        min-height: 300px;
    }
    
    .vinyl-spin {
        width: 250px;
        height: 250px;
    }
    
    .article-cards {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid,
    .support-grid {
        grid-template-columns: 1fr;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-list {
        flex-wrap: wrap;
    }
    
    .nav-list li {
        flex: 1 1 33%;
        max-width: none;
    }
    
    .usp-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .usp-divider {
        display: none;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .craft-stats {
        flex-direction: column;
        gap: 20px;
    }
}