@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap");

:root {
    --primary-color: #8c1c1c;
    --primary-dark: #5f1111;
    --accent-color: #d4af37;
    --text-color: #2f2a25;
    --muted-text: #6f675e;
    --bg-color: #f8f4ee;
    --surface-color: rgba(255, 252, 247, 0.84);
    --card-color: #fffdfa;
    --border-color: rgba(140, 28, 28, 0.12);
    --shadow: 0 18px 45px rgba(61, 36, 22, 0.12);
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --container-width: 1180px;
    --font-sans: "Noto Sans SC", "Source Han Sans SC", sans-serif;
    --font-serif: "Noto Serif SC", "Source Han Serif SC", serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background:
        radial-gradient(circle at top left, rgba(212, 175, 55, 0.12), transparent 22%),
        radial-gradient(circle at top right, rgba(140, 28, 28, 0.08), transparent 28%),
        var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: inherit;
}

.container {
    width: min(calc(100% - 48px), var(--container-width));
    margin: 0 auto;
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding-top: 18px;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 16px 24px;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    background: rgba(255, 250, 244, 0.72);
    backdrop-filter: blur(18px);
    box-shadow: 0 10px 30px rgba(31, 17, 8, 0.08);
}

.logo {
    display: inline-flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--primary-color);
    letter-spacing: 0.08em;
}

.logo img {
    display: block;
    width: auto;
    height: 32px;
    object-fit: contain;
}

.logo span {
    font-size: 0.72rem;
    color: var(--muted-text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.95rem;
    color: var(--text-color);
    transition: color 0.25s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 46px;
    height: 46px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    cursor: pointer;
}

.menu-toggle span {
    width: 18px;
    height: 2px;
    margin: 0 auto;
    background: var(--text-color);
    border-radius: 999px;
}

.hero {
    position: relative;
    min-height: 100vh;
    padding: 160px 0 80px;
    background:
        linear-gradient(110deg, rgba(30, 17, 9, 0.82), rgba(68, 18, 14, 0.62)),
        url("background.jpg") center/cover;
    color: #fff8ef;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to bottom, rgba(0, 0, 0, 0.1), transparent 35%),
        linear-gradient(to top, rgba(0, 0, 0, 0.18), transparent 30%);
}

.hero-layout {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, 420px);
    gap: 48px;
    align-items: center;
}

.hero-content h1 {
    max-width: 760px;
    font-size: clamp(2.8rem, 5vw, 4.8rem);
    line-height: 1.12;
    margin-bottom: 24px;
    font-family: var(--font-serif);
    font-weight: 700;
}

.hero-tag,
.section-tag,
.panel-label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: rgba(255, 241, 224, 0.82);
}

.hero-tag::before,
.section-tag::before,
.panel-label::before {
    content: "";
    width: 34px;
    height: 1px;
    background: currentColor;
}

.hero-description {
    max-width: 680px;
    font-size: 1.05rem;
    color: rgba(255, 248, 239, 0.88);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 148px;
    padding: 14px 26px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #f1d98a);
    color: #3c2511;
    box-shadow: 0 12px 28px rgba(212, 175, 55, 0.25);
}

.btn-secondary {
    border: 1px solid rgba(255, 248, 239, 0.36);
    background: rgba(255, 255, 255, 0.08);
    color: #fff8ef;
}

.hero-panel {
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-lg);
    background: rgba(255, 252, 247, 0.12);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
}

.hero-panel h2 {
    margin-bottom: 16px;
    font-size: 1.8rem;
    font-family: var(--font-serif);
    font-weight: 600;
}

.hero-panel p {
    color: rgba(255, 248, 239, 0.86);
}

.panel-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 28px;
}

.panel-metrics div {
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.panel-metrics strong {
    display: block;
    margin-bottom: 4px;
    font-size: 1.7rem;
    color: #fff;
}

.panel-metrics span {
    font-size: 0.92rem;
    color: rgba(255, 248, 239, 0.75);
}

.trust-strip {
    border-bottom: 1px solid rgba(140, 28, 28, 0.08);
    background: rgba(255, 253, 250, 0.7);
}

.trust-items {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    padding: 24px 0;
    text-align: center;
    color: var(--muted-text);
    font-size: 0.95rem;
}

.section {
    padding: 100px 0;
}

.section-heading {
    margin-bottom: 26px;
}

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

.section-heading.center .section-tag {
    justify-content: center;
}

.section-title {
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.2;
    margin-bottom: 10px;
    font-family: var(--font-serif);
    font-weight: 700;
}

.section-subtitle {
    max-width: 720px;
    margin: 0 auto;
    color: var(--muted-text);
}

.section-grid {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
    gap: 48px;
    align-items: start;
}

.section-tag,
.panel-label {
    color: var(--primary-color);
}

.lead {
    font-size: 1.08rem;
    color: var(--muted-text);
}

.feature-list,
.advantage-grid,
.timeline {
    display: grid;
    gap: 22px;
}

.feature-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 30px;
}

.feature-card,
.service-card,
.advantage-card,
.timeline-item,
.contact-card {
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
}

.feature-card,
.advantage-card,
.timeline-item {
    padding: 28px;
}

.feature-card h3,
.service-card h3,
.advantage-card h3,
.timeline-item h3 {
    margin-bottom: 12px;
    font-size: 1.15rem;
    font-family: var(--font-serif);
    font-weight: 600;
}

.feature-card p,
.service-card p,
.advantage-card p,
.timeline-item p,
.contact-card p {
    color: var(--muted-text);
}

.services {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(140, 28, 28, 0.04));
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-top: 38px;
}

.service-card {
    padding: 34px 30px;
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.service-card:hover,
.advantage-card:hover,
.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(140, 28, 28, 0.2);
    box-shadow: 0 22px 48px rgba(82, 44, 21, 0.14);
}

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    margin-bottom: 22px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(140, 28, 28, 0.1), rgba(212, 175, 55, 0.18));
    color: var(--primary-color);
    font-weight: 700;
}

.advantage-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.process {
    background: rgba(255, 253, 250, 0.7);
}

.insights {
    background: linear-gradient(180deg, rgba(140, 28, 28, 0.03), rgba(255, 255, 255, 0.2));
}

.article-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 38px;
}

.article-preview-card {
    padding: 32px;
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.article-preview-card:hover {
    transform: translateY(-8px);
    border-color: rgba(140, 28, 28, 0.2);
    box-shadow: 0 22px 48px rgba(82, 44, 21, 0.14);
}

.article-type {
    display: inline-flex;
    margin-bottom: 18px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(140, 28, 28, 0.08);
    color: var(--primary-color);
    font-size: 0.82rem;
}

.article-preview-card h3 {
    margin-bottom: 14px;
    font-size: 1.35rem;
    line-height: 1.4;
    font-family: var(--font-serif);
    font-weight: 600;
}

.article-preview-card p {
    color: var(--muted-text);
}

.text-link,
.footer-inner a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.text-link:hover,
.footer-inner a:hover {
    text-decoration: underline;
}

.timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 38px;
}

.timeline-item {
    position: relative;
    padding-top: 70px;
}

.timeline-item span {
    position: absolute;
    top: 24px;
    left: 24px;
    font-size: 0.82rem;
    letter-spacing: 0.18em;
    color: var(--primary-color);
}

.contact-card {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
    gap: 32px;
    padding: 42px;
    background:
        linear-gradient(135deg, rgba(140, 28, 28, 0.98), rgba(88, 16, 16, 0.96)),
        var(--card-color);
    color: #fff7ef;
}

.contact-card .section-tag,
.contact-card p {
    color: rgba(255, 247, 239, 0.84);
}

.contact-card .section-tag::before {
    background: rgba(255, 247, 239, 0.84);
}

.contact-card h2 {
    font-size: clamp(2rem, 3vw, 2.8rem);
    line-height: 1.2;
    margin-bottom: 16px;
    font-family: var(--font-serif);
    font-weight: 700;
}

.contact-info {
    display: grid;
    gap: 16px;
}

.contact-info div {
    padding: 20px 22px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.06);
}

.contact-info span {
    display: block;
    margin-bottom: 8px;
    font-size: 0.88rem;
    color: rgba(255, 247, 239, 0.7);
}

.contact-info strong {
    font-size: 1rem;
    line-height: 1.5;
}

.qr-card img {
    display: block;
    width: min(100%, 180px);
    margin-top: 12px;
    border-radius: 12px;
    background: #fff;
    padding: 8px;
    object-fit: cover;
}

.site-footer {
    padding: 28px 0 40px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-top: 26px;
    border-top: 1px solid rgba(140, 28, 28, 0.1);
    color: var(--muted-text);
    font-size: 0.94rem;
}

.article-page {
    min-height: 100vh;
    padding: 48px 0 72px;
}

.article-shell {
    width: min(calc(100% - 32px), 900px);
    margin: 0 auto;
    padding: 36px 32px;
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.back-link {
    display: inline-flex;
    align-items: center;
    margin-bottom: 24px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

.article-header {
    margin-bottom: 28px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(140, 28, 28, 0.12);
}

.article-header h1 {
    margin-bottom: 16px;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.25;
    font-family: var(--font-serif);
    font-weight: 700;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
    color: var(--muted-text);
    font-size: 0.95rem;
}

.article-content h2 {
    margin: 34px 0 14px;
    font-size: 1.5rem;
    line-height: 1.4;
    color: var(--primary-dark);
    font-family: var(--font-serif);
    font-weight: 700;
}

.article-content h3 {
    margin: 24px 0 10px;
    font-size: 1.15rem;
    line-height: 1.5;
    font-family: var(--font-serif);
    font-weight: 600;
}

.article-content p {
    margin-bottom: 14px;
    color: var(--text-color);
}

.article-content strong {
    color: var(--primary-dark);
}

.article-content ul,
.article-content ol {
    margin: 0 0 18px 22px;
}

.article-content li {
    margin-bottom: 10px;
}

.reference-list li {
    color: var(--muted-text);
}

.fade-in {
    animation: fadeInUp 0.9s ease-out forwards;
}

.fade-in-delay {
    animation: fadeInUp 0.9s ease-out 0.2s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        transform: translateY(26px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 1080px) {
    .hero-layout,
    .section-grid,
    .contact-card,
    .timeline,
    .feature-list,
    .advantage-grid,
    .service-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-layout,
    .section-grid,
    .contact-card {
        align-items: stretch;
    }

    .timeline,
    .feature-list,
    .advantage-grid,
    .service-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .trust-items {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        width: min(calc(100% - 32px), var(--container-width));
    }

    .site-header {
        padding-top: 12px;
    }

    .navbar {
        position: relative;
        padding: 14px 18px;
        border-radius: 28px;
    }

    .menu-toggle {
        display: inline-flex;
        flex-shrink: 0;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 18px;
        border: 1px solid var(--border-color);
        border-radius: 24px;
        background: rgba(255, 252, 247, 0.96);
        box-shadow: 0 12px 28px rgba(41, 24, 15, 0.1);
    }

    .nav-links.is-open {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: 140px 0 70px;
    }

    .hero-layout,
    .section-grid,
    .feature-list,
    .service-grid,
    .advantage-grid,
    .timeline,
    .article-preview-grid,
    .contact-card,
    .trust-items {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-panel,
    .contact-card,
    .service-card,
    .feature-card,
    .advantage-card,
    .timeline-item {
        padding: 24px;
    }

    .section {
        padding: 78px 0;
    }

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

    .btn {
        width: 100%;
    }

    .footer-inner {
        flex-direction: column;
    }

    .article-shell {
        padding: 28px 22px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.15rem;
    }

    .section-title,
    .contact-card h2 {
        font-size: 1.8rem;
    }

    .panel-metrics {
        grid-template-columns: 1fr;
    }
}