/* ========================================
   利家致雅 Ricagrace 网站样式
   主色：#231815 | 辅助色：#bb0611 | 白色：#FFFFFF
   ======================================== */

:root {
    --color-primary: #231815;
    --color-accent: #bb0611;
    --color-white: #FFFFFF;
    --color-cream: #f5f2ef;
    --color-muted: #a8a29e;
    --color-overlay: rgba(35, 24, 21, 0.72);
    --font-display: 'Noto Serif SC', serif;
    --font-body: 'Noto Sans SC', sans-serif;
    --radius: 4px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-primary);
    color: var(--color-cream);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(35, 24, 21, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo img {
    height: 44px;
    width: auto;
}

.main-nav {
    display: flex;
    gap: 40px;
}

.main-nav a {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.05em;
    position: relative;
    padding: 8px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-white);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.08em;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: #9e0510;
    border-color: #9e0510;
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

.btn-block {
    width: 100%;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /*filter: brightness(0.65);*/
}

.hero-overlay {
    position: absolute;
    inset: 0;
    /*background: linear-gradient(90deg, rgba(35,24,21,0.82) 0%, rgba(35,24,21,0.4) 100%);*/
    background: linear-gradient(90deg, rgba(35,24,21,0.3) 0%, rgba(35,24,21,0.1) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 80px;
    max-width: 720px;
}

.hero-label {
    font-size: 14px;
    letter-spacing: 0.25em;
    color: var(--color-accent);
    margin-bottom: 20px;
    font-weight: 600;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(24px, 4vw, 48px);
    line-height: 1.15;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 28px;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 560px;
    margin-bottom: 40px;
}

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

/* Sections */
.section {
    padding: 120px 0;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 600;
}

.section-head {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-head h2,
.about-lead h2,
.intro-text h2,
.contact-info h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    line-height: 1.3;
    color: var(--color-white);
    margin-bottom: 20px;
}

/* Intro Section */
.section-intro {
    background: var(--color-cream);
    color: var(--color-primary);
}

.section-intro .section-tag {
    color: var(--color-accent);
}

.section-intro h2 {
    color: var(--color-primary);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.intro-text p {
    font-size: 17px;
    margin-bottom: 20px;
    color: #4a403c;
}

.intro-image img {
    border-radius: var(--radius);
    box-shadow: 0 24px 48px rgba(35, 24, 21, 0.18);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 12px;
}

.link-arrow::after {
    content: '→';
    transition: transform var(--transition);
}

.link-arrow:hover::after {
    transform: translateX(6px);
}

/* Features */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 40px 32px;
    border-radius: var(--radius);
    transition: transform var(--transition), border-color var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(187, 6, 17, 0.4);
}

.feature-num {
    display: block;
    font-size: 14px;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--color-white);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--color-muted);
    font-size: 15px;
}

/* CTA */
.section-cta {
    background: linear-gradient(135deg, #2a1c18 0%, #231815 100%);
    text-align: center;
}

.cta-inner h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    color: var(--color-white);
    margin-bottom: 16px;
}

.cta-inner p {
    color: var(--color-muted);
    font-size: 18px;
    margin-bottom: 32px;
}

/* Page Header */
.page-header {
    position: relative;
    padding: 180px 0 100px;
    background: var(--color-primary);
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-header h1 {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 56px);
    color: var(--color-white);
    margin-bottom: 8px;
}

.page-header p {
    font-size: 14px;
    letter-spacing: 0.25em;
    color: var(--color-accent);
    text-transform: uppercase;
}

/* About */
.section-about {
    background: var(--color-cream);
    color: var(--color-primary);
}

.section-about h2,
.section-about h3,
.section-about h4 {
    color: var(--color-primary);
}

.about-lead {
    max-width: 880px;
    margin-bottom: 64px;
}

.about-lead p,
.about-block p {
    font-size: 17px;
    margin-bottom: 20px;
    color: #4a403c;
}

.about-block {
    margin-bottom: 64px;
}

.about-block h3 {
    font-family: var(--font-display);
    font-size: 28px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.about-highlight {
    background: var(--color-white);
    padding: 48px;
    border-radius: var(--radius);
    box-shadow: 0 16px 40px rgba(35, 24, 21, 0.08);
}

.about-highlight .intro-grid {
    margin-top: 32px;
}

.intro-item {
    margin-bottom: 28px;
}

.intro-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--color-accent);
}

.intro-item p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 0;
}

/* Products */
.section-products {
    background: var(--color-primary);
}

.product-list {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    overflow: hidden;
}

.product-featured {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.product-featured .product-info {
    padding: 48px;
}

.product-featured .product-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}

.product-featured .product-gallery img {
    width: 100%;
    height: 260px;
    object-fit: cover;
}

.product-image img {
    width: 100%;
    height: 360px;
    object-fit: cover;
}

.product-info {
    padding: 40px;
}

.product-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.product-info h3 {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--color-white);
    margin-bottom: 16px;
}

.product-info p {
    color: var(--color-muted);
    margin-bottom: 16px;
}

.product-info ul {
    list-style: none;
    margin: 20px 0;
}

.product-info li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 12px;
    color: var(--color-muted);
}

.product-info li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.product-intro {
    font-size: 18px;
    color: var(--color-white) !important;
    font-weight: 500;
}

/* Contact */
.section-contact {
    background: var(--color-cream);
    color: var(--color-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-info p {
    color: #4a403c;
    font-size: 17px;
    margin-bottom: 32px;
}

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

.contact-list li {
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    border-bottom: 1px solid rgba(35, 24, 21, 0.1);
}

.contact-list strong {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.contact-list span {
    font-size: 17px;
    color: var(--color-primary);
}

.contact-form-wrap {
    background: var(--color-white);
    padding: 48px;
    border-radius: var(--radius);
    box-shadow: 0 16px 40px rgba(35, 24, 21, 0.08);
}

.form-message {
    padding: 16px;
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.form-message.success {
    background: rgba(187, 6, 17, 0.08);
    color: var(--color-accent);
    border: 1px solid rgba(187, 6, 17, 0.2);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border: 1px solid rgba(35, 24, 21, 0.15);
    border-radius: var(--radius);
    background: #fafafa;
    color: var(--color-primary);
    transition: border-color var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* Footer */
.site-footer {
    background: #1a100d;
    padding: 80px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-logo {
    height: 56px;
    width: auto;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-muted);
    font-size: 15px;
    line-height: 1.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 14px;
    letter-spacing: 0.1em;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: var(--color-muted);
    margin-bottom: 12px;
    font-size: 15px;
}

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

.footer-contact p {
    color: var(--color-muted);
    font-size: 15px;
    margin-bottom: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--color-muted);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 992px) {
    .intro-grid,
    .contact-grid,
    .product-card {
        grid-template-columns: 1fr;
    }

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

    .product-featured .product-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-info {
        padding: 32px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 72px;
    }

    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(35, 24, 21, 0.98);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        transform: translateY(-150%);
        opacity: 0;
        transition: all var(--transition);
        pointer-events: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .main-nav a {
        padding: 16px 0;
        font-size: 18px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav-toggle {
        display: flex;
    }

    .section {
        padding: 80px 0;
    }

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

    .btn {
        width: 100%;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

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

    .about-highlight {
        padding: 32px;
    }

    .contact-form-wrap {
        padding: 32px;
    }

    .product-featured .product-gallery img {
        height: 180px;
    }
}