:root {
    --primary: #111111;
    --accent: #c89b3c; /* 金色 */
    --bg: #050608;
    --bg-alt: #101218;
    --text: #f5f5f5;
    --text-muted: #b0b4c0;
    --border: #2b2f3a;
    --radius-lg: 18px;
    --radius-md: 12px;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #1e2433 0, #050608 55%);
    color: var(--text);
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* Layout */

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header / Nav */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(16px);
    background: linear-gradient(to bottom, rgba(5, 6, 8, 0.95), rgba(5, 6, 8, 0.82));
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
}

.brand {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.brand-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.brand-subtitle {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.18em;
}

.nav-links {
    display: flex;
    gap: 18px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.nav-links a {
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: all 0.18s ease;
    color: var(--text-muted);
}

.nav-links a:hover {
    border-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.03);
}

.nav-links a.active {
    border-color: var(--accent);
    color: #ffffff;
    background: rgba(200, 155, 60, 0.12);
}

/* Hero */

.hero {
    padding: 72px 0 64px;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.hero-title {
    margin: 18px 0 12px;
    font-size: 40px;
    line-height: 1.15;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.hero-highlight {
    color: var(--accent);
}

.hero-text {
    max-width: 480px;
    color: var(--text-muted);
    font-size: 15px;
}

.hero-actions {
    margin-top: 26px;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    border: 1px solid transparent;
    cursor: pointer;
    background: none;
    color: #ffffff;
    transition: all 0.18s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #f3d08a);
    color: #1a1410;
    border-color: transparent;
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

.btn-outline {
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-muted);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.07);
    color: #ffffff;
}

/* Hero image card */

.hero-card {
    border-radius: 26px;
    overflow: hidden;
    background: radial-gradient(circle at top, #283149, #050608 65%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--shadow-soft);
    position: relative;
}

.hero-card img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    filter: saturate(1.1) contrast(1.05);
}

.hero-card-overlay {
    position: absolute;
    inset: auto 18px 18px 18px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(5, 6, 8, 0.86);
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.hero-card-overlay h3 {
    font-size: 14px;
    margin: 0 0 2px;
}

.hero-card-overlay p {
    margin: 0;
    font-size: 12px;
    color: var(--text-muted);
}

/* Sections */

.section {
    padding: 34px 0 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 22px;
}

.section-title {
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

.section-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

/* Cards */

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.card {
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(15, 19, 28, 0.96), rgba(9, 11, 16, 0.98));
    border: 1px solid var(--border);
    padding: 18px 18px 16px;
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.5);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 10px;
}

.card-title {
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.card-tag {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    border-radius: 999px;
    padding: 3px 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-body {
    font-size: 13px;
    color: var(--text-muted);
}

/* About / content */

.content-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 40px;
}

.content-block {
    border-radius: var(--radius-lg);
    background: linear-gradient(155deg, #0d1017, #050608);
    border: 1px solid var(--border);
    padding: 20px 22px;
    box-shadow: var(--shadow-soft);
}

.content-block h2 {
    margin-top: 0;
    margin-bottom: 6px;
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.content-block p {
    font-size: 14px;
    color: var(--text-muted);
}

.list-check {
    list-style: none;
    padding-left: 0;
    margin: 10px 0 0;
    font-size: 13px;
    color: var(--text-muted);
}

.list-check li::before {
    content: "•";
    color: var(--accent);
    margin-right: 8px;
}

/* Products */

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.product-card {
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, rgba(15, 19, 28, 0.98), rgba(5, 6, 8, 1));
    border: 1px solid var(--border);
    overflow: hidden;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
}

.product-media img {
    height: 100%;
    width: 100%;
    object-fit: cover;
}

.product-content {
    padding: 16px 18px;
}

.product-title {
    font-size: 15px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.product-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.product-text {
    font-size: 13px;
    color: var(--text-muted);
}

/* Product thumbnails */

.thumb-grid {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.thumb-grid img {
    width: 52px;
    height: 52px;
    object-fit: cover;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    opacity: 0.9;
}

.thumb-grid img:hover {
    opacity: 1;
}

/* Home gallery */

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: #0b0d14;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.gallery-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.gallery-label {
    position: absolute;
    left: 10px;
    bottom: 8px;
    padding: 3px 8px;
    border-radius: 999px;
    background: rgba(5, 6, 8, 0.8);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

/* Contact */

.contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 24px;
}

.form-card {
    border-radius: var(--radius-lg);
    background: linear-gradient(160deg, #0d1017, #050608);
    border: 1px solid var(--border);
    padding: 20px;
    box-shadow: var(--shadow-soft);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.label {
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
}

.input,
.textarea {
    width: 100%;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(3, 4, 6, 0.98);
    padding: 9px 11px;
    font-size: 13px;
    color: var(--text);
    outline: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.input:focus,
.textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(200, 155, 60, 0.5);
}

.textarea {
    min-height: 110px;
    resize: vertical;
}

/* Contact info */

.contact-info-card {
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, #0d1017, #050608);
    border: 1px solid var(--border);
    padding: 18px 18px 16px;
    box-shadow: var(--shadow-soft);
}

.contact-item {
    margin-bottom: 10px;
    font-size: 13px;
}

.contact-label {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 11px;
    color: var(--text-muted);
}

.contact-value {
    font-size: 14px;
}

.map-wrapper {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 12px;
}

.map-wrapper iframe {
    width: 100%;
    height: 220px;
    border: 0;
}

/* Privacy */

.privacy {
    padding-bottom: 60px;
}

.privacy h2 {
    font-size: 18px;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.privacy h3 {
    font-size: 15px;
    margin-top: 20px;
    margin-bottom: 6px;
}

.privacy p,
.privacy li {
    font-size: 13px;
    color: var(--text-muted);
}

.privacy ul {
    padding-left: 18px;
}

/* Footer */

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 0 20px;
    margin-top: 18px;
    font-size: 11px;
    color: var(--text-muted);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

/* Responsive */

@media (max-width: 900px) {
    .hero-layout,
    .content-layout,
    .product-grid,
    .contact-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero {
        padding-top: 52px;
    }

    .hero-title {
        font-size: 32px;
    }

    .card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-card {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 680px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav-links {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .card-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .form-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-footer {
        font-size: 10px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}