/* roulang page: index */
:root {
    --primary: #5B2A86;
    --primary-dark: #4A2170;
    --gold: #D19A3A;
    --gold-light: rgba(209, 154, 58, 0.25);
    --accent: #E8613C;
    --bg-light: #F7F5F2;
    --bg-dark: #221A2E;
    --card-bg: #FFFFFF;
    --text-primary: #1E1826;
    --text-secondary: #6A6373;
    --text-inverse: #F5F0FA;
    --border: #E8E2EC;
    --border-dark: #3A2C46;
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 30px rgba(38, 20, 56, 0.08);
    --shadow-hover: 0 16px 40px rgba(38, 20, 56, 0.14);
    --transition: all 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-primary);
    background: var(--bg-light);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 15px;
    line-height: 1;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    min-height: 44px;
}

.btn-gold {
    background: var(--gold);
    color: var(--text-primary);
    border-color: var(--gold);
}

.btn-gold:hover {
    background: #b8842e;
    border-color: #b8842e;
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(209, 154, 58, 0.3);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--gold);
    color: var(--gold);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: 52px;
}

.section-header .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-header .section-desc {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light h2 {
    color: #fff;
}

.section-header.light .section-desc {
    color: rgba(245, 240, 250, 0.7);
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 16px;
    z-index: 999;
    padding: 0 20px;
}

.header-panel {
    max-width: 1200px;
    margin: 0 auto;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 24px rgba(38, 20, 56, 0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    min-height: 72px;
    border-bottom: 2px solid var(--gold);
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.logo-gold {
    color: var(--gold);
}

.logo-text.white {
    color: #fff;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 14px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--bg-light);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-item .nav-icon {
    width: 18px;
    height: 18px;
    border-radius: 6px;
    background: rgba(91, 42, 134, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--primary);
}

.nav-item:hover {
    background: rgba(209, 154, 58, 0.12);
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary);
    color: #fff;
}

.nav-item.active .nav-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

.header-cta {
    display: inline-flex;
    align-items: center;
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-pill);
    background: var(--gold);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}

.header-cta:hover {
    background: #b8842e;
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(209, 154, 58, 0.3);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-primary);
    cursor: pointer;
    height: 44px;
    width: 44px;
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
}

.menu-toggle:hover {
    background: rgba(209, 154, 58, 0.15);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--bg-dark);
    z-index: 1001;
    padding: 80px 24px 24px;
    transition: right 0.35s ease;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu.open {
    right: 0;
}

.mobile-menu::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(34, 26, 46, 0.5);
    z-index: -1;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.mobile-menu.open::before {
    opacity: 1;
    pointer-events: auto;
}

.mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.mobile-nav-item i {
    width: 20px;
    color: var(--gold);
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
    background: rgba(209, 154, 58, 0.15);
    color: var(--gold);
}

/* ===== Hero ===== */
.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    padding: 80px 0 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(34, 26, 46, 0.88) 0%, rgba(91, 42, 134, 0.62) 60%, rgba(34, 26, 46, 0.3) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 40px;
}

.hero-content h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    color: #fff;
    margin-bottom: 20px;
    max-width: 640px;
}

.hero-content h1 .gold {
    color: var(--gold);
}

.hero-subtitle {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(245, 240, 250, 0.85);
    max-width: 520px;
    margin-bottom: 32px;
}

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

.hero-stats {
    position: relative;
    z-index: 3;
    margin-top: -40px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 32px 40px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.stat-item {
    text-align: center;
    padding: 0 20px;
    position: relative;
}

.stat-item + .stat-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12%;
    height: 76%;
    width: 1px;
    background: var(--border);
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    font-family: "Inter", Arial, sans-serif;
}

.stat-unit {
    font-size: 14px;
    font-weight: 600;
    color: var(--gold);
    margin-left: 2px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ===== Services ===== */
.services-section {
    padding: 100px 0;
}

.service-cards {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 1100px;
    margin: 0 auto;
}

.service-card {
    display: flex;
    align-items: center;
    gap: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--gold);
}

.service-card:nth-child(even) {
    flex-direction: row-reverse;
}

.service-icon-wrap {
    flex-shrink: 0;
    width: 120px;
    height: 120px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 38px;
    color: #fff;
    box-shadow: 0 12px 30px rgba(91, 42, 134, 0.2);
}

.service-content {
    flex: 1;
}

.service-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.service-content > p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.service-feats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    margin-bottom: 14px;
}

.service-feats li {
    font-size: 13px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.service-feats li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 10px;
    color: var(--gold);
}

.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.service-link i {
    transition: transform 0.25s ease;
}

.service-link:hover {
    color: var(--gold);
}

.service-link:hover i {
    transform: translateX(4px);
}

/* ===== Advantages ===== */
.advantages-section {
    background: var(--bg-dark);
    padding: 90px 0;
}

.advantage-badges {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}

.badge-item {
    text-align: center;
    padding: 24px 16px;
    position: relative;
}

.badge-item::after {
    content: '';
    position: absolute;
    right: 0;
    top: 15%;
    height: 70%;
    width: 1px;
    background: var(--border-dark);
}

.badge-item:last-child::after {
    display: none;
}

.badge-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), #e8b95b);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 20px;
    color: var(--bg-dark);
    box-shadow: 0 8px 24px rgba(209, 154, 58, 0.3);
}

.badge-number {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    font-family: "Inter", Arial, sans-serif;
}

.badge-unit {
    font-size: 12px;
    color: var(--gold);
    margin-left: 2px;
}

.badge-label {
    font-size: 13px;
    color: rgba(245, 240, 250, 0.6);
    margin-top: 6px;
}

/* ===== Cases ===== */
.cases-section {
    padding: 100px 0;
}

.case-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: var(--gold);
}

.case-img {
    width: 100%;
    height: 230px;
    object-fit: cover;
}

.case-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 12px;
    font-weight: 600;
    color: var(--gold);
    background: var(--gold-light);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    margin-bottom: 10px;
}

.case-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-body p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 14px;
    flex: 1;
}

.case-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.case-link i {
    transition: transform 0.25s ease;
}

.case-link:hover {
    color: var(--gold);
}

.case-link:hover i {
    transform: translateX(4px);
}

/* ===== Solution ===== */
.solution-section {
    padding: 90px 0;
    background: #fff;
}

.solution-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding: 20px 0 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.solution-timeline::before {
    content: '';
    position: absolute;
    top: 56px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--gold), var(--accent));
}

.timeline-step {
    text-align: center;
    position: relative;
}

.step-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary);
    margin: 0 auto 18px;
    position: relative;
    z-index: 1;
    box-shadow: 0 8px 20px rgba(91, 42, 134, 0.12);
    transition: var(--transition);
}

.timeline-step:hover .step-icon {
    background: var(--primary);
    color: #fff;
    transform: scale(1.08);
}

.step-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.step-content p {
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 200px;
    margin: 0 auto;
}

.solution-cta {
    text-align: center;
    margin-top: 24px;
}

/* ===== News ===== */
.news-section {
    padding: 100px 0;
}

.news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    border-color: var(--gold);
    box-shadow: var(--shadow-hover);
}

.news-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.news-tag {
    font-size: 12px;
    font-weight: 600;
    color: var(--gold);
    background: var(--gold-light);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}

.news-date {
    font-size: 12px;
    color: var(--text-secondary);
}

.news-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-summary {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 14px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-link i {
    transition: transform 0.25s ease;
}

.news-link:hover {
    color: var(--gold);
}

.news-link:hover i {
    transform: translateX(4px);
}

.news-empty {
    background: rgba(255, 255, 255, 0.6);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 60px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.news-empty i {
    font-size: 40px;
    color: var(--gold);
    margin-bottom: 16px;
    display: block;
}

.news-empty p {
    font-size: 14px;
}

/* ===== FAQ ===== */
.faq-section {
    padding: 90px 0;
    background: #fff;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--gold);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    user-select: none;
}

.faq-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gold);
    flex-shrink: 0;
}

.faq-question i {
    margin-left: auto;
    color: var(--gold);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.faq-answer p {
    padding: 0 24px 20px 44px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Contact ===== */
.contact-section {
    padding: 100px 0;
    background: var(--bg-dark);
}

.contact-panel {
    background: var(--bg-dark);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--gold);
    margin-bottom: 8px;
}

.contact-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    line-height: 1.3;
}

.contact-info > p {
    font-size: 15px;
    color: rgba(245, 240, 250, 0.7);
    margin-bottom: 24px;
    max-width: 420px;
}

.contact-line {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: rgba(245, 240, 250, 0.85);
    margin-bottom: 14px;
}

.contact-line i {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(209, 154, 58, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--gold);
    flex-shrink: 0;
}

.contact-form-wrap {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-card);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background: var(--bg-light);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 14px 16px;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 16px;
    transition: var(--transition);
    outline: none;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-secondary);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(209, 154, 58, 0.25);
    background: #fff;
}

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn {
    margin-top: 4px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    padding: 70px 0 24px;
    border-top: 2px solid var(--gold);
}

.site-footer h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.site-footer ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer ul a {
    font-size: 14px;
    color: rgba(245, 240, 250, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.site-footer ul a:hover {
    color: var(--gold);
    padding-left: 4px;
}

.footer-brand p {
    font-size: 14px;
    color: rgba(245, 240, 250, 0.7);
    margin: 16px 0 20px;
    line-height: 1.7;
    max-width: 280px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(245, 240, 250, 0.8);
    font-size: 14px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--gold);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.footer-contact {
    font-size: 14px;
    color: rgba(245, 240, 250, 0.7);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: var(--gold);
    width: 16px;
}

.footer-bottom {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--border-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-bottom span {
    font-size: 12px;
    color: rgba(245, 240, 250, 0.5);
}

.footer-icp {
    font-size: 12px;
    color: rgba(245, 240, 250, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 1023.98px) {
    .main-nav,
    .header-cta {
        display: none;
    }

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

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 0;
        padding: 28px;
    }

    .stat-item:nth-child(3)::before {
        display: none;
    }

    .service-card,
    .service-card:nth-child(even) {
        flex-direction: column;
        text-align: center;
        padding: 28px;
    }

    .service-icon-wrap {
        width: 80px;
        height: 80px;
        font-size: 28px;
        border-radius: 18px;
    }

    .service-feats {
        justify-content: center;
    }

    .services-section,
    .cases-section,
    .news-section,
    .contact-section {
        padding: 72px 0;
    }

    .solution-timeline {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .solution-timeline::before {
        display: none;
    }

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

    .advantage-badges {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 0;
    }

    .badge-item:nth-child(2)::after {
        display: none;
    }
}

@media (max-width: 639.98px) {
    .site-header {
        top: 0;
        padding: 8px 12px;
    }

    .header-panel {
        padding: 0 16px;
        min-height: 60px;
        border-radius: 14px;
    }

    .logo-text {
        font-size: 18px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .hero-section {
        min-height: 480px;
        padding: 60px 0 80px;
    }

    .hero-content h1 {
        font-size: 26px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

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

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 24px;
        margin-top: -30px;
    }

    .stat-item::before,
    .stat-item:nth-child(3)::before {
        display: none;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .section-header .eyebrow {
        font-size: 11px;
    }

    .services-section,
    .cases-section,
    .news-section,
    .contact-section,
    .advantages-section,
    .faq-section,
    .solution-section {
        padding: 56px 0;
    }

    .service-card {
        padding: 24px;
        gap: 24px;
    }

    .service-content h3 {
        font-size: 18px;
    }

    .service-feats {
        flex-direction: column;
        gap: 6px;
    }

    .advantage-badges {
        grid-template-columns: 1fr;
        gap: 32px 0;
    }

    .badge-item::after {
        display: none;
    }

    .solution-timeline {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .case-img {
        height: 180px;
    }

    .contact-form-wrap {
        padding: 24px;
    }

    .contact-info h2 {
        font-size: 22px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* roulang page: category1 */
:root {
            --primary: #5B2A86;
            --primary-dark: #4A2170;
            --gold: #D19A3A;
            --gold-light: #E8C88A;
            --accent: #E8613C;
            --bg-light: #F7F5F2;
            --bg-dark: #221A2E;
            --card-bg: #FFFFFF;
            --text-main: #1E1826;
            --text-sub: #6A6373;
            --text-reverse: #F5F0FA;
            --border: #E8E2EC;
            --border-dark: #3A2C46;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 8px 30px rgba(38, 20, 56, 0.08);
            --shadow-hover: 0 16px 40px rgba(38, 20, 56, 0.14);
            --transition: all 0.25s ease;
            --font-main: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-number: "Inter", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        .grid-container {
            max-width: 75rem;
        }
        /* ===== Header ===== */
        .site-header {
            position: relative;
            z-index: 100;
            padding-top: 16px;
            background: var(--bg-light);
        }
        .header-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: 0 4px 24px rgba(38, 20, 56, 0.06);
            padding: 0 20px;
            min-height: 72px;
            border-bottom: 2px solid var(--gold);
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--primary), var(--gold));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(91, 42, 134, 0.3);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .logo-gold {
            color: var(--gold);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-light);
            border-radius: 999px;
            padding: 0 18px;
            height: 44px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-item .nav-icon {
            width: 20px;
            height: 20px;
            border-radius: 6px;
            background: rgba(91, 42, 134, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            transition: var(--transition);
        }
        .nav-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
            border-color: var(--border);
            background: #fff;
            color: var(--primary);
        }
        .nav-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(91, 42, 134, 0.25);
        }
        .nav-item.active .nav-icon {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--bg-light);
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            border-color: var(--gold);
            color: var(--gold);
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 88px;
                left: 16px;
                right: 16px;
                background: var(--bg-dark);
                border-radius: var(--radius-lg);
                padding: 20px;
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
                z-index: 99;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-item {
                background: rgba(255, 255, 255, 0.06);
                color: var(--text-reverse);
                height: 50px;
                border-radius: var(--radius-md);
            }
            .nav-item .nav-icon {
                background: rgba(255, 255, 255, 0.1);
                color: var(--gold-light);
            }
            .nav-item.active {
                background: var(--primary);
                color: #fff;
            }
            .header-panel {
                min-height: 64px;
            }
            .logo-text {
                font-size: 18px;
            }
        }
        @media (max-width: 520px) {
            .header-cta {
                display: none;
            }
            .header-panel {
                padding: 0 14px;
            }
        }
        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-gold {
            background: var(--gold);
            color: #fff;
            box-shadow: 0 4px 14px rgba(209, 154, 58, 0.35);
        }
        .btn-gold:hover {
            background: #b8882f;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(209, 154, 58, 0.4);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--gold-light);
            color: var(--gold-light);
            transform: translateY(-2px);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(91, 42, 134, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            margin-top: -2px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(34, 26, 46, 0.92), rgba(91, 42, 134, 0.6));
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            padding: 100px 0 140px;
            width: 100%;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--gold-light);
            background: rgba(209, 154, 58, 0.15);
            border: 1px solid rgba(209, 154, 58, 0.3);
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            max-width: 700px;
            margin-bottom: 20px;
        }
        .hero-title .gold {
            color: var(--gold);
        }
        .hero-subtitle {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(245, 240, 250, 0.85);
            max-width: 520px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        /* ===== 数据徽章条 ===== */
        .stats-strip {
            position: relative;
            z-index: 5;
            margin-top: -64px;
            padding-bottom: 60px;
        }
        .stats-panel {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: 0 12px 40px rgba(38, 20, 56, 0.12);
            padding: 32px 20px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }
        .stat-item {
            text-align: center;
            padding: 8px 16px;
            position: relative;
        }
        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 50px;
            background: var(--border);
        }
        .stat-number {
            font-family: var(--font-number);
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-unit {
            font-size: 14px;
            font-weight: 700;
            color: var(--gold);
            margin-left: 2px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-sub);
            margin-top: 4px;
        }
        @media (max-width: 640px) {
            .stats-panel {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px 0;
            }
            .stat-item:nth-child(2)::after {
                display: none;
            }
        }
        @media (max-width: 400px) {
            .stats-panel {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-item:not(:last-child)::after {
                display: none;
            }
        }
        /* ===== 板块通用 ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            max-width: 600px;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
        }
        /* ===== 分类介绍 ===== */
        .intro-section {
            background: #fff;
            position: relative;
            overflow: hidden;
        }
        .intro-wrap {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .intro-media {
            flex: 0 0 46%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .intro-media img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .intro-media:hover img {
            transform: scale(1.03);
        }
        .intro-content {
            flex: 1;
        }
        .intro-content p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-points {
            margin-top: 20px;
        }
        .intro-points li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }
        .intro-points li:last-child {
            border-bottom: none;
        }
        .intro-points li i {
            color: var(--gold);
            font-size: 16px;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .intro-wrap {
                flex-direction: column;
                gap: 28px;
            }
            .intro-media {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        /* ===== 特性列表 ===== */
        .features-section {
            background: var(--bg-light);
            position: relative;
        }
        .features-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .feature-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            gap: 24px;
            align-items: flex-start;
            margin-bottom: 16px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--gold);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--gold);
        }
        .feature-item:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--gold));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            flex-shrink: 0;
            box-shadow: 0 6px 16px rgba(91, 42, 134, 0.2);
        }
        .feature-content {
            flex: 1;
        }
        .feature-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .feature-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin: 0;
        }
        @media (max-width: 640px) {
            .feature-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }
            .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 16px;
                border-radius: 12px;
            }
        }
        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 36px;
        }
        .faq-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-card:hover {
            border-color: var(--gold);
        }
        .faq-card.open {
            border-color: var(--gold);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
        }
        .faq-question .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--gold);
            flex-shrink: 0;
        }
        .faq-icon {
            margin-left: auto;
            color: var(--gold);
            font-size: 18px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-card.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .faq-card.open .faq-answer {
            max-height: 300px;
            padding-top: 14px;
            margin-top: 12px;
            border-top: 1px solid var(--border);
        }
        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }
        /* ===== 相关分类入口 ===== */
        .rel-section {
            background: var(--bg-light);
        }
        .rel-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .rel-card {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 28px;
            text-align: center;
            transition: var(--transition);
            display: block;
            position: relative;
            overflow: hidden;
        }
        .rel-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--gold));
            opacity: 0;
            transition: var(--transition);
        }
        .rel-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--gold);
        }
        .rel-card:hover::before {
            opacity: 1;
        }
        .rel-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--gold));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            box-shadow: 0 8px 20px rgba(91, 42, 134, 0.25);
        }
        .rel-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .rel-card p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .rel-link {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .rel-link i {
            transition: transform 0.25s ease;
        }
        .rel-card:hover .rel-link i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .rel-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(91, 42, 134, 0.5), transparent 70%);
        }
        .cta-inner {
            padding: 80px 0;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(245, 240, 250, 0.75);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .cta-inner {
                padding: 56px 0;
            }
            .cta-title {
                font-size: 24px;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(245, 240, 250, 0.8);
            padding: 60px 0 0;
            font-size: 14px;
        }
        .site-footer .footer-brand {
            margin-bottom: 16px;
        }
        .site-footer .logo-text.white {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
        }
        .site-footer .logo-gold {
            color: var(--gold);
        }
        .site-footer p {
            color: rgba(245, 240, 250, 0.6);
            font-size: 13px;
            line-height: 1.7;
            margin: 12px 0;
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(245, 240, 250, 0.7);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--gold);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: rgba(245, 240, 250, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer ul li a:hover {
            color: var(--gold-light);
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            font-size: 13px;
    }
        .footer-contact i {
            color: var(--gold);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding: 20px 0;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: rgba(245, 240, 250, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-icp {
            color: rgba(245, 240, 250, 0.4);
        }
        @media (max-width: 768px) {
            .site-footer {
                padding-top: 40px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* ===== 通用 ===== */
        .text-center {
            text-align: center;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .mb-40 {
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 32px;
            }
            .hero-section {
                min-height: 420px;
            }
            .hero-inner {
                padding: 60px 0 120px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #5B2A86;
            --primary-dark: #4A2170;
            --gold: #D19A3A;
            --gold-light: #F5E8CE;
            --accent: #E8613C;
            --bg-body: #F7F5F2;
            --bg-dark: #221A2E;
            --card-bg: #FFFFFF;
            --text-main: #1E1826;
            --text-sub: #6A6373;
            --text-invert: #F5F0FA;
            --border: #E8E2EC;
            --radius-lg: 20px;
            --radius-md: 12px;
            --shadow: 0 8px 30px rgba(38, 20, 56, 0.08);
            --shadow-hover: 0 16px 40px rgba(38, 20, 56, 0.14);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.75;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
            border: none;
        }

        ul, ol {
            list-style-position: inside;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin: 0 auto;
        }

        .grid-margin-x > .cell {
            margin-bottom: 32px;
        }

        /* 通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.02em;
            transition: var(--transition);
            min-height: 44px;
        }

        .btn-gold {
            background: linear-gradient(135deg, #E0B35C, var(--gold));
            color: #fff;
            box-shadow: 0 6px 16px rgba(209, 154, 58, 0.28);
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, #D19A3A, #C0882E);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(209, 154, 58, 0.38);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.8);
            color: #fff;
        }

        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
            transform: translateY(-2px);
        }

        .btn-block {
            width: 100%;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
            padding: 16px 0 0;
            background: transparent;
        }

        .header-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: #fff;
            border: 1px solid var(--border);
            border-bottom: 2px solid var(--gold);
            border-radius: 16px;
            height: 72px;
            padding: 0 20px 0 24px;
            box-shadow: 0 4px 24px rgba(38, 20, 56, 0.06);
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: -0.02em;
        }

        .logo-gold {
            color: var(--gold);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
            justify-content: center;
            padding: 0 12px;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 18px;
            border-radius: 999px;
            background: var(--bg-body);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }

        .nav-item:hover {
            background: var(--gold-light);
            color: var(--primary);
        }

        .nav-item.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 18px;
            height: 18px;
            font-size: 14px;
        }

        .header-cta {
            margin-left: 12px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--bg-body);
            color: var(--text-main);
            font-size: 18px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--gold-light);
            color: var(--primary);
        }

        /* 文章 Hero */
        .article-hero {
            position: relative;
            min-height: 440px;
            display: flex;
            align-items: flex-end;
            padding: 96px 0 112px;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(34, 26, 46, 0.93) 0%, rgba(91, 42, 134, 0.74) 100%),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        }

        .article-hero > .grid-container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .breadcrumb .current {
            color: var(--gold);
        }

        .article-title {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            max-width: 860px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .meta-item i {
            color: var(--gold);
            font-size: 14px;
        }

        /* 文章正文区 */
        .article-main {
            position: relative;
            z-index: 3;
            margin-top: -56px;
            padding-bottom: 80px;
        }

        .article-content-card {
            max-width: 940px;
            margin: 0 auto;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 56px 0 40px;
            transition: var(--transition);
        }

        .article-content {
            max-width: 720px;
            margin: 0 auto;
            padding: 0 40px;
            color: var(--text-main);
        }

        .article-content p {
            margin-bottom: 1.2em;
            font-size: 16px;
            line-height: 1.85;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            line-height: 1.3;
            color: var(--text-main);
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin-top: 1.4em;
            margin-bottom: 0.5em;
            line-height: 1.3;
            color: var(--primary);
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2em;
            padding-left: 1.4em;
        }

        .article-content li {
            margin-bottom: 0.4em;
            line-height: 1.8;
        }

        .article-content blockquote {
            border-left: 4px solid var(--gold);
            background: var(--bg-body);
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-sub);
            font-size: 15px;
        }

        .article-content pre {
            background: var(--bg-dark);
            color: #EDE7F3;
            padding: 20px 24px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 24px 0;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: 14px;
            line-height: 1.7;
        }

        .article-content code {
            background: rgba(91, 42, 134, 0.08);
            color: var(--primary);
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 14px;
        }

        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .article-content img {
            border-radius: 16px;
            box-shadow: var(--shadow);
            margin: 28px 0;
        }

        .article-content figcaption {
            text-align: center;
            font-size: 13px;
            color: var(--text-sub);
            margin-top: -16px;
            margin-bottom: 24px;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-decoration-color: rgba(91, 42, 134, 0.3);
            text-underline-offset: 4px;
        }

        .article-content a:hover {
            color: var(--gold);
            text-decoration-color: var(--gold);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 12px;
            overflow: hidden;
            font-size: 14px;
        }

        .article-content th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }

        .article-content td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            background: #fff;
        }

        .article-content tr:last-child td {
            border-bottom: none;
        }

        .article-not-found {
            max-width: 720px;
            margin: 0 auto;
            padding: 48px 40px;
            text-align: center;
        }

        .article-not-found i {
            font-size: 52px;
            color: var(--gold);
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 26px;
            margin-bottom: 8px;
        }

        .article-not-found p {
            color: var(--text-sub);
            margin-bottom: 24px;
        }

        /* 文章工具区 */
        .article-tools {
            max-width: 720px;
            margin: 40px auto 0;
            padding: 24px 40px 0;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 32px;
            padding: 0 14px;
            border-radius: 999px;
            background: var(--gold-light);
            color: var(--gold);
            font-size: 12px;
            font-weight: 600;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 999px;
            background: var(--bg-body);
            color: var(--text-sub);
            font-size: 14px;
        }

        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .back-list {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .back-list:hover {
            color: var(--gold);
        }

        /* 相关推荐 */
        .related-section {
            padding: 24px 0 100px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 8px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }

        .related-card {
            display: flex;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(38, 20, 56, 0.05);
            transition: var(--transition);
            min-height: 160px;
        }

        .related-card:hover {
            border-color: var(--gold);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .related-thumb {
            width: 160px;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }

        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.06);
        }

        .related-body {
            flex: 1;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .related-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .related-card:hover .related-body h3 {
            color: var(--primary);
        }

        .related-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .read-more {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .related-card:hover .read-more {
            color: var(--gold);
        }

        .related-card:hover .read-more {
            transform: translateX(4px);
        }

        /* 联系区域 */
        .contact-section {
            padding: 0 0 100px;
        }

        .contact-card {
            background: var(--bg-dark);
            border-radius: 28px;
            padding: 64px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .contact-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(209, 154, 58, 0.18) 0%, transparent 70%);
        }

        .contact-card .section-eyebrow {
            color: var(--gold);
        }

        .contact-card h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .contact-card .lead {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            max-width: 420px;
            line-height: 1.75;
        }

        .contact-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-list p {
            display: flex;
            align-items: center;
            gap: 12px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
        }

        .contact-list i {
            color: var(--gold);
            font-size: 16px;
            width: 20px;
            text-align: center;
        }

        .contact-form {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            color: var(--text-main);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
        }

        .contact-form label {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 8px;
            display: block;
            color: var(--text-main);
        }

        .contact-form input[type="text"],
        .contact-form input[type="tel"],
        .contact-form textarea {
            width: 100%;
            background: var(--bg-body);
            border: 1px solid transparent;
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 14px;
            color: var(--text-main);
            transition: var(--transition);
            margin-bottom: 20px;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(209, 154, 58, 0.25);
            background: #fff;
        }

        .contact-form input::placeholder,
        .contact-form textarea::placeholder {
            color: #9A90A5;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 72px 0 0;
        }

        .footer-brand .logo-text.white {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            margin: 16px 0 20px;
            line-height: 1.7;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--gold);
            color: #fff;
            transform: translateY(-2px);
        }

        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 12px;
        }

        .site-footer ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        .site-footer ul a:hover {
            color: var(--gold);
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 12px;
        }

        .footer-contact i {
            color: var(--gold);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom span {
            display: inline-block;
        }

        /* 媒体查询 */
        @media screen and (max-width: 1024px) {
            .header-cta {
                display: none;
            }

            .main-nav {
                position: fixed;
                top: 0;
                right: -300px;
                width: 280px;
                height: 100vh;
                background: var(--bg-dark);
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                padding: 88px 24px 32px;
                gap: 8px;
                transition: right 0.3s ease, opacity 0.3s ease;
                z-index: 210;
                opacity: 0;
                pointer-events: none;
            }

            .main-nav.open {
                right: 0;
                opacity: 1;
                pointer-events: auto;
            }

            .nav-item {
                background: rgba(255, 255, 255, 0.06);
                color: var(--text-invert);
                height: 48px;
                padding: 0 16px;
                border-radius: 12px;
                font-size: 15px;
            }

            .nav-item:hover {
                background: rgba(255, 255, 255, 0.12);
                color: #fff;
            }

            .nav-item.active {
                background: var(--gold);
                color: var(--bg-dark);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .site-header {
                padding-left: 0;
                padding-right: 0;
            }

            .article-title {
                font-size: 34px;
            }

            .contact-card {
                padding: 40px 28px;
            }

            .related-card {
                flex-direction: column;
            }

            .related-thumb {
                width: 100%;
                height: 180px;
            }

            .contact-card h2 {
                font-size: 26px;
            }
        }

        @media screen and (max-width: 640px) {
            body {
                font-size: 15px;
            }

            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .header-panel {
                height: 64px;
                padding: 0 12px 0 16px;
                border-radius: 14px;
            }

            .logo-text {
                font-size: 18px;
            }

            .article-hero {
                min-height: 400px;
                padding: 76px 0 96px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-main {
                margin-top: -40px;
                padding-bottom: 56px;
            }

            .article-content-card {
                padding: 32px 0 28px;
                border-radius: 16px;
            }

            .article-content {
                padding: 0 24px;
            }

            .article-content p {
                font-size: 15px;
                line-height: 1.8;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 18px;
            }

            .article-tools {
                padding: 20px 24px 0;
                flex-direction: column;
                align-items: flex-start;
            }

            .article-share {
                width: 100%;
                justify-content: flex-start;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .related-section {
                padding-bottom: 64px;
            }

            .related-card {
                flex-direction: row;
            }

            .related-thumb {
                width: 120px;
                height: auto;
                min-height: 140px;
            }

            .related-body {
                padding: 16px;
            }

            .related-body h3 {
                font-size: 16px;
            }

            .contact-section {
                padding-bottom: 64px;
            }

            .contact-card {
                border-radius: 20px;
                padding: 32px 20px;
            }

            .contact-card .lead {
                font-size: 14px;
            }

            .contact-form {
                padding: 24px 20px;
                border-radius: 16px;
            }

            .site-footer {
                padding-top: 56px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media screen and (max-width: 480px) {
            .related-thumb {
                width: 100px;
            }

            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* Foundation 样式覆盖 */
        .button, .btn {
            background: transparent;
            border: none;
        }

        a:hover, a:focus {
            color: inherit;
        }

        a:focus, button:focus, input:focus, textarea:focus, select:focus {
            outline: 2px solid rgba(209, 154, 58, 0.5);
            outline-offset: 2px;
        }

        .grid-container .grid-container {
            padding-left: 0;
            padding-right: 0;
        }