/* roulang page: index */
:root {
    --primary: #1B6FE8;
    --primary-dark: #0E4EB8;
    --primary-light: #E8F1FE;
    --accent: #FF6A00;
    --accent-dark: #E85C00;
    --page-bg: #F7F9FC;
    --card-bg: #FFFFFF;
    --title-color: #10243E;
    --text-color: #5B6B82;
    --muted-color: #8C9AAE;
    --border-color: #E4EAF2;
    --divider-color: #EAF0F6;
    --radius-btn: 8px;
    --radius-card: 12px;
    --radius-img: 12px;
    --radius-tag: 999px;
    --shadow-card: 0 1px 3px rgba(16,36,62,0.04), 0 4px 16px rgba(16,36,62,0.06);
    --shadow-card-hover: 0 3px 8px rgba(16,36,62,0.08), 0 12px 32px rgba(16,36,62,0.10);
    --shadow-btn: 0 8px 20px rgba(27,111,232,0.25);
    --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--page-bg);
    color: var(--text-color);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

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

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

.container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}

/* ========== Header & Navigation ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    height: 72px;
}

.site-header .container {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 10px;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--title-color);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.main-nav a {
    display: inline-block;
    padding: 10px 16px;
    color: var(--text-color);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-btn);
    position: relative;
    transition: color 0.2s ease, background 0.2s ease;
}

.main-nav a:hover {
    color: var(--primary);
    background: rgba(27,111,232,0.06);
}

.main-nav a.active {
    color: var(--primary);
    font-weight: 600;
}

.main-nav a.active::after {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 2px;
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 8px 22px;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
    background: var(--accent-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255,106,0,0.25);
}

.nav-cta:active {
    transform: translateY(0);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 42px;
    height: 42px;
    border: none;
    background: transparent;
    cursor: pointer;
    gap: 5px;
    border-radius: var(--radius-btn);
    z-index: 1060;
}

.mobile-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--title-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 991px) {
    .mobile-toggle {
        display: flex;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        box-shadow: var(--shadow-card-hover);
        border-bottom: 1px solid var(--border-color);
    }
    .main-nav.open {
        display: flex;
    }
    .main-nav a {
        padding: 14px 20px;
        font-size: 16px;
        border-radius: 8px;
    }
    .main-nav a.active::after {
        left: 20px;
        transform: none;
        width: 3px;
        height: 20px;
        bottom: 50%;
        margin-bottom: -10px;
        border-radius: 3px;
    }
    .nav-cta {
        justify-content: center;
    }
    .site-header .container {
        padding-left: 20px;
        padding-right: 20px;
    }
}

/* ========== Hero Section ========== */
.hero-section {
    position: relative;
    padding: 72px 0 64px;
    background: linear-gradient(135deg, #F0F6FF 0%, #F7F9FC 60%, #EAF1FE 100%);
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: -120px;
    right: -120px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(27,111,232,0.08);
    pointer-events: none;
}

.hero-section::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(255,106,0,0.05);
    pointer-events: none;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-row {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 56px;
    align-items: center;
}

.hero-content {
    padding-right: 8px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--radius-tag);
    margin-bottom: 20px;
    letter-spacing: 0.3px;
}

.hero-badge i {
    font-size: 12px;
}

.hero-title {
    font-size: 38px;
    line-height: 1.25;
    font-weight: 700;
    color: var(--title-color);
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.hero-title span {
    color: var(--primary);
    position: relative;
}

.hero-sub {
    font-size: 17px;
    color: var(--text-color);
    line-height: 1.75;
    margin-bottom: 32px;
    max-width: 480px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    transition: all 0.2s ease;
    font-size: 15px;
    padding: 12px 24px;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(27,111,232,0.3);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 4px 12px rgba(27,111,232,0.2);
}

.btn-outline-primary {
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateY(-1px);
}

.btn-outline-primary:active {
    transform: translateY(0);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(255,106,0,0.25);
}

.btn-accent:hover {
    background: var(--accent-dark);
    color: #fff;
    transform: translateY(-1px);
}

.hero-visual {
    position: relative;
}

.hero-img-wrap {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-card-hover);
    border: 1px solid var(--border-color);
    position: relative;
    aspect-ratio: 16/10;
    background: var(--primary-light);
}

.hero-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-img-wrap::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(16,36,62,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-float-bar {
    position: absolute;
    left: -24px;
    bottom: -22px;
    background: #fff;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card-hover);
    padding: 16px 22px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border-color);
}

.hero-float-bar .icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
}

.hero-float-bar .number {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

.hero-float-bar .label {
    font-size: 13px;
    color: var(--muted-color);
    line-height: 1.3;
}

@media (max-width: 991px) {
    .hero-section {
        padding: 48px 0;
    }
    .hero-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-content {
        padding-right: 0;
    }
    .hero-title {
        font-size: 30px;
    }
    .hero-float-bar {
        left: 12px;
        bottom: -18px;
    }
}

@media (max-width: 575px) {
    .hero-title {
        font-size: 26px;
    }
    .hero-sub {
        font-size: 15px;
    }
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    .hero-float-bar {
        padding: 12px 16px;
        left: 8px;
    }
}

/* ========== Stats Bar ========== */
.stats-section {
    padding: 0;
    margin-top: -10px;
    position: relative;
    z-index: 5;
}

.stats-bar {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    overflow: hidden;
}

.stat-item {
    padding: 32px 28px;
    text-align: center;
    position: relative;
}

.stat-item + .stat-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: var(--divider-color);
}

.stat-number {
    font-size: 38px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
    font-family: "DIN Alternate", "Bebas Neue", Arial, sans-serif;
    letter-spacing: 1px;
}

.stat-item:nth-child(2) .stat-number,
.stat-item:nth-child(4) .stat-number {
    color: var(--accent);
}

.stat-label {
    font-size: 14px;
    color: var(--muted-color);
    margin-top: 6px;
    letter-spacing: 1px;
}

@media (max-width: 991px) {
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-item:nth-child(2)::before {
        display: none;
    }
    .stat-item:nth-child(n+3)::before {
        top: 0;
        left: 25%;
        width: 50%;
        height: 1px;
    }
}

@media (max-width: 575px) {
    .stat-number {
        font-size: 28px;
    }
    .stat-item {
        padding: 20px 12px;
    }
}

/* ========== Section Common ========== */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--title-color);
    line-height: 1.3;
    margin-bottom: 14px;
}

.section-desc {
    font-size: 15px;
    color: var(--text-color);
    line-height: 1.8;
}

@media (max-width: 767px) {
    .section {
        padding: 48px 0;
    }
    .section-header {
        margin-bottom: 32px;
    }
    .section-title {
        font-size: 22px;
    }
    .section-desc {
        font-size: 14px;
    }
}

/* ========== Service Section ========== */
.service-section {
    background: #fff;
}

.service-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 32px;
    align-items: stretch;
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-nav-item {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 22px 20px;
    border-radius: var(--radius-card);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
}

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

.service-nav-item.active {
    background: var(--primary-light);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-card) var(--radius-card) var(--radius-card) 4px;
}

.service-nav-item .num {
    font-size: 24px;
    font-weight: 700;
    color: var(--muted-color);
    font-family: "DIN Alternate", Arial, sans-serif;
    min-width: 40px;
}

.service-nav-item.active .num {
    color: var(--primary);
}

.service-nav-item .name {
    font-size: 18px;
    font-weight: 600;
    color: var(--title-color);
    flex: 1;
}

.service-nav-item .arrow {
    color: var(--muted-color);
    font-size: 16px;
    opacity: 0;
    transform: translateX(-4px);
    transition: all 0.25s ease;
}

.service-nav-item.active .arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--primary);
}

.service-detail-card {
    background: var(--page-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 36px;
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.service-detail-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--title-color);
    margin-bottom: 6px;
}

.service-detail-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-color);
}

.service-detail-img {
    border-radius: var(--radius-img);
    overflow: hidden;
    aspect-ratio: 16/8;
    background: var(--primary-light);
}

.service-detail-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-points {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-points li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-color);
    padding: 5px 0;
}

.service-points li i {
    color: var(--primary);
    font-size: 14px;
    margin-top: 5px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 15px;
    margin-top: 4px;
}

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

.section-footer-center {
    text-align: center;
    margin-top: 40px;
}

@media (max-width: 991px) {
    .service-layout {
        grid-template-columns: 1fr;
    }
    .service-detail-card {
        padding: 24px;
    }
}

/* ========== Case Section ========== */
.case-section {
    background: var(--page-bg);
}

.case-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.case-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease;
}

.case-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(27,111,232,0.3);
    transform: translateY(-2px);
}

.case-card-media {
    aspect-ratio: 16/9;
    overflow: hidden;
    position: relative;
    background: var(--primary-light);
}

.case-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-card-media img {
    transform: scale(1.02);
}

.case-card-body {
    padding: 24px;
}

.case-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-tag);
    margin-bottom: 12px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--title-color);
    line-height: 1.4;
    margin-bottom: 8px;
}

.case-summary {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    padding-top: 14px;
    border-top: 1px solid var(--divider-color);
}

.case-meta-item {
    font-size: 13px;
    color: var(--muted-color);
}

.case-meta-item strong {
    color: var(--title-color);
    font-weight: 600;
    font-size: 15px;
}

.case-meta-item strong.accent {
    color: var(--accent);
}

@media (max-width: 991px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== Cooperate Section ========== */
.cooperate-section {
    background: #fff;
}

.cooperate-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.cooperate-content .section-title {
    text-align: left;
    margin-bottom: 16px;
}

.cooperate-content .section-desc {
    margin-bottom: 20px;
}

.cooperate-points {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}

.cooperate-points li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    font-size: 15px;
    color: var(--text-color);
}

.cooperate-points li i {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cooperate-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.coop-card {
    background: var(--page-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.25s ease;
    cursor: pointer;
}

.coop-card:hover {
    background: var(--primary-light);
    border-color: rgba(27,111,232,0.25);
    box-shadow: var(--shadow-card);
    transform: translateX(4px);
}

.coop-card .icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-btn);
    background: #fff;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    flex-shrink: 0;
}

.coop-card .info {
    flex: 1;
}

.coop-card .info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--title-color);
    margin-bottom: 4px;
}

.coop-card .info p {
    font-size: 13px;
    color: var(--muted-color);
    margin: 0;
    line-height: 1.5;
}

.coop-card .arrow {
    color: var(--muted-color);
    font-size: 14px;
    transition: transform 0.2s ease;
}

.coop-card:hover .arrow {
    color: var(--primary);
    transform: translateX(3px);
}

@media (max-width: 991px) {
    .cooperate-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* ========== News Section ========== */
.news-section {
    background: var(--page-bg);
}

.news-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 40px;
}

.news-header .section-title {
    margin-bottom: 4px;
}

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}

.news-more:hover {
    color: var(--primary-dark);
    gap: 8px;
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.news-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(27,111,232,0.3);
    transform: translateY(-3px);
}

.news-thumb {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--primary-light);
    position: relative;
}

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

.news-card:hover .news-thumb img {
    transform: scale(1.02);
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--title-color);
    line-height: 1.45;
    margin-bottom: 8px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.news-title a {
    color: var(--title-color);
}

.news-title a:hover {
    color: var(--primary);
}

.news-summary {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    margin-bottom: 14px;
}

.news-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--divider-color);
    font-size: 13px;
    color: var(--muted-color);
}

.news-footer .date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-footer .views {
    display: flex;
    align-items: center;
    gap: 4px;
}

.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 48px 24px;
    background: #fff;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-card);
    color: var(--muted-color);
    font-size: 15px;
}

@media (max-width: 991px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    .news-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}

/* ========== FAQ Section ========== */
.faq-section {
    background: #fff;
}

.faq-list {
    max-width: 860px;
    margin: 0 auto;
}

.faq-item {
    background: var(--page-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-card);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.25s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-card);
}

.faq-item.open {
    box-shadow: var(--shadow-card);
    border-color: rgba(27,111,232,0.2);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    cursor: pointer;
    user-select: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--title-color);
    transition: color 0.2s ease;
}

.faq-question .faq-icon {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform 0.3s ease, background 0.3s ease;
    font-style: normal;
    line-height: 1;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
}

.faq-item.open .faq-question {
    color: var(--primary);
}

.faq-answer {
    display: none;
    padding: 0 24px 20px;
    font-size: 14.5px;
    color: var(--text-color);
    line-height: 1.8;
}

.faq-answer.open {
    display: block;
}

.faq-more {
    text-align: center;
    margin-top: 32px;
}

.faq-more a {
    color: var(--muted-color);
    font-size: 15px;
    font-weight: 500;
}

.faq-more a:hover {
    color: var(--primary);
}

/* ========== CTA Section ========== */
.cta-section {
    padding: 40px 0 80px;
    background: var(--page-bg);
}

.cta-card {
    background: var(--primary-light);
    border: 1px solid rgba(27,111,232,0.15);
    border-radius: var(--radius-card);
    padding: 48px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

.cta-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--title-color);
    margin-bottom: 12px;
}

.cta-content p {
    font-size: 15px;
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 24px;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cta-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.cta-form input,
.cta-form select {
    width: 100%;
    height: 44px;
    border: 1px solid #D6DFEA;
    border-radius: var(--radius-btn);
    padding: 0 16px;
    font-size: 14px;
    color: var(--title-color);
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cta-form input:focus,
.cta-form select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(27,111,232,0.15);
}

.cta-form input::placeholder {
    color: var(--muted-color);
}

.cta-form .btn-accent {
    height: 44px;
    justify-content: center;
    width: 100%;
}

@media (max-width: 991px) {
    .cta-card {
        grid-template-columns: 1fr;
        padding: 32px 24px;
    }
    .cta-form .form-row {
        grid-template-columns: 1fr;
    }
}

/* ========== Footer ========== */
.site-footer {
    background: #10243E;
    color: #C6D2E2;
    padding-top: 64px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand .logo-icon {
    background: var(--primary);
}

.footer-brand .logo-text {
    color: #fff;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: #9FB0C8;
    max-width: 300px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #9FB0C8;
    font-size: 14px;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-links a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 14px;
    color: #9FB0C8;
}

.footer-contact-item i {
    width: 18px;
    text-align: center;
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-copy {
    font-size: 13px;
    color: #7E90A8;
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9FB0C8;
    font-size: 14px;
    transition: all 0.2s ease;
}

.footer-social a:hover {
    background: var(--primary);
    color: #fff;
}

@media (max-width: 991px) {
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 575px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ========== Focus Visibility ========== */
a:focus, button:focus, input:focus, select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(27,111,232,0.25);
    border-radius: var(--radius-btn);
}

a:focus:not(.btn), button:focus:not(.btn) {
    border-radius: 4px;
}

/* ========== Utility ========== */
.bg-white {
    background: #fff;
}

.bg-light {
    background: var(--page-bg);
}

.text-primary-custom {
    color: var(--primary);
}

.text-accent {
    color: var(--accent);
}

/* roulang page: article */
:root {
    --primary: #1B6FE8;
    --primary-dark: #0E4EB8;
    --primary-light: #E8F1FE;
    --accent: #FF6A00;
    --accent-dark: #E85C00;
    --bg: #F7F9FC;
    --card-bg: #FFFFFF;
    --text-heading: #10243E;
    --text-body: #5B6B82;
    --text-muted: #8C9AAE;
    --border: #E4EAF2;
    --divider: #EAF0F6;
    --radius-btn: 8px;
    --radius-card: 12px;
    --radius-img: 12px;
    --radius-badge: 999px;
    --shadow-card: 0 1px 3px rgba(16,36,62,0.04), 0 4px 16px rgba(16,36,62,0.06);
    --shadow-card-hover: 0 3px 8px rgba(16,36,62,0.08), 0 12px 32px rgba(16,36,62,0.10);
    --shadow-btn: 0 8px 20px rgba(27,111,232,0.25);
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color .2s ease;
}

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

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

.btn {
    border-radius: var(--radius-btn);
    font-weight: 600;
    padding: 12px 24px;
    transition: all .2s ease;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(27,111,232,0.18);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-outline-primary {
    background: #fff;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 8px 20px rgba(255,106,0,0.25);
}

.btn-accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
    transform: translateY(-1px);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    white-space: nowrap;
}

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 4px 10px rgba(27,111,232,0.25);
    flex-shrink: 0;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.main-nav a {
    color: var(--text-body);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
    transition: color .2s ease;
}

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

.main-nav a.active {
    color: var(--primary);
    font-weight: 600;
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 42px;
    height: 42px;
    border-radius: 8px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-heading);
    margin: 4px auto;
    border-radius: 2px;
    transition: all .3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.article-page-header {
    background: linear-gradient(135deg, rgba(232,241,254,0.94), rgba(247,249,252,0.97)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    padding: 48px 0 40px;
    border-bottom: 1px solid var(--border);
}

.breadcrumb-custom {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.breadcrumb-custom a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color .2s ease;
}

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

.breadcrumb-custom .sep {
    color: #C6D2E2;
}

.breadcrumb-custom .current {
    color: var(--text-body);
    max-width: 480px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-words .eyebrow {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 10px;
}

.header-words p {
    font-size: 16px;
    color: var(--text-body);
    margin: 0;
}

.article-main {
    padding: 36px 0 80px;
}

.article-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 48px;
    max-width: 860px;
    margin: 0 auto;
}

.article-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.35;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--divider);
    margin-bottom: 28px;
}

.meta-cate {
    display: inline-block;
    padding: 4px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}

.meta-dot {
    color: #C6D2E2;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.meta-item i {
    color: var(--text-muted);
}

.article-cover {
    border-radius: var(--radius-img);
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 32px;
    background: var(--divider);
}

.article-cover img {
    width: 100%;
    display: block;
    object-fit: cover;
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: #3D4C63;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content table,
.article-content img,
.article-content pre,
.article-content h2,
.article-content h3,
.article-content h4 {
    margin-bottom: 1.4em;
}

.article-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-heading);
    margin-top: 2em;
}

.article-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
    margin-top: 1.6em;
}

.article-content img {
    max-width: 100%;
    border-radius: 12px;
    height: auto;
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-light);
    padding: 16px 20px;
    border-radius: 4px;
    color: var(--text-body);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
}

.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: 10px 12px;
}

.article-content th {
    background: var(--primary-light);
    color: var(--text-heading);
    font-weight: 600;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

.article-content ul li,
.article-content ol li {
    margin-bottom: 6px;
}

.article-content pre {
    background: var(--text-heading);
    color: #E8F1FE;
    padding: 16px 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 14px;
}

.article-content code {
    font-family: Consolas, Monaco, monospace;
    font-size: 14px;
}

.article-content > *:last-child {
    margin-bottom: 0;
}

.article-tags {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--divider);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
}

.badge-tag i {
    font-size: 12px;
}

.article-footer-bar {
    margin-top: 24px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.article-footer-bar .btn i {
    margin-right: 6px;
}

.article-missing {
    max-width: 640px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 64px 32px;
    text-align: center;
}

.article-missing i {
    font-size: 48px;
    color: #C6D2E2;
    margin-bottom: 16px;
}

.missing-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
}

.article-missing p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.related-section {
    background: #FFFFFF;
    border-top: 1px solid var(--border);
    padding: 80px 0;
}

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

.eyebrow {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 10px;
}

.section-head h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0 0 8px;
}

.section-head p {
    color: var(--text-muted);
    font-size: 15px;
    margin: 0;
}

.related-empty {
    max-width: 520px;
    margin: 0 auto;
    background: var(--bg);
    border: 1px dashed var(--border);
    border-radius: var(--radius-card);
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
}

.related-empty i {
    font-size: 32px;
    color: #C6D2E2;
    margin-bottom: 12px;
    display: block;
}

.related-empty p {
    margin-bottom: 20px;
}

.cta-section {
    background: var(--bg);
    padding: 80px 0;
}

.cta-card {
    background: linear-gradient(135deg, var(--primary-light), #FFFFFF);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    box-shadow: var(--shadow-card);
}

.cta-text {
    flex: 1;
    min-width: 280px;
}

.cta-text h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-heading);
    margin: 0 0 10px;
}

.cta-text p {
    color: var(--text-body);
    margin: 0;
    max-width: 520px;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cta-actions .btn i {
    margin-right: 6px;
}

.site-footer {
    background: var(--text-heading);
    color: #C6D2E2;
    padding: 64px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-brand .logo-text {
    color: #FFFFFF;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.7;
    color: #9FB0C6;
    max-width: 320px;
}

.footer-title {
    color: #FFFFFF;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #C6D2E2;
    text-decoration: none;
    font-size: 14px;
    transition: color .2s ease;
}

.footer-links a:hover {
    color: #FFFFFF;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 12px;
    color: #C6D2E2;
}

.footer-contact-item i {
    color: var(--accent);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: #9FB0C6;
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #C6D2E2;
    text-decoration: none;
    transition: all .2s ease;
}

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

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

@media (max-width: 1199px) {
    .container {
        max-width: 100%;
        padding-left: 16px;
        padding-right: 16px;
    }
}

@media (max-width: 991px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #FFFFFF;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 32px rgba(16,36,62,0.10);
        padding: 16px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav.open {
        display: flex;
    }

    .main-nav a {
        padding: 14px 8px;
        border-bottom: 1px solid var(--divider);
        font-size: 16px;
    }

    .main-nav a:last-child {
        border-bottom: none;
    }

    .main-nav a.active::after {
        display: none;
    }

    .main-nav a.active {
        background: var(--primary-light);
        color: var(--primary);
        border-radius: 8px;
        padding-left: 12px;
    }

    .article-page-header {
        padding: 36px 0 28px;
    }

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

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

    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 575px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

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

    .breadcrumb-custom {
        font-size: 13px;
        gap: 6px;
    }

    .breadcrumb-custom .current {
        max-width: 200px;
    }

    .header-words p {
        font-size: 14px;
    }

    .article-main {
        padding: 24px 0 56px;
    }

    .article-card {
        padding: 22px 16px;
        border-radius: 12px;
    }

    .article-title {
        font-size: 24px;
    }

    .article-meta {
        gap: 8px;
        font-size: 13px;
    }

    .article-content {
        font-size: 15px;
    }

    .related-section,
    .cta-section {
        padding: 56px 0;
    }

    .section-head h2 {
        font-size: 24px;
    }

    .cta-card {
        padding: 28px 20px;
        flex-direction: column;
        text-align: center;
    }

    .cta-actions {
        justify-content: center;
        width: 100%;
    }

    .cta-actions .btn {
        flex: 1;
        min-width: 140px;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 28px;
    }

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

/* roulang page: category1 */
:root {
            --primary: #1B6FE8;
            --primary-dark: #0E4EB8;
            --primary-light: #E8F1FE;
            --accent: #FF6A00;
            --accent-dark: #E85C00;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --title-color: #10243E;
            --text-color: #5B6B82;
            --muted-color: #8C9AAE;
            --border-color: #E4EAF2;
            --divider-color: #EAF0F6;
            --radius-btn: 8px;
            --radius-card: 12px;
            --radius-img: 12px;
            --radius-badge: 999px;
            --shadow-card: 0 1px 3px rgba(16,36,62,0.04), 0 4px 16px rgba(16,36,62,0.06);
            --shadow-card-hover: 0 3px 8px rgba(16,36,62,0.08), 0 12px 32px rgba(16,36,62,0.10);
            --shadow-btn: 0 8px 20px rgba(27,111,232,0.25);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text-color);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--text-color); text-decoration: none; transition: color .2s ease; }
        a:hover { color: var(--primary); }
        ul { list-style: none; }
        .container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
        @media (max-width: 1199px) {
            .container { max-width: 100%; padding-left: 16px; padding-right: 16px; }
        }

        /* 通用按钮 */
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease, transform .15s ease;
        }
        .btn:active { transform: translateY(1px); }
        .btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: var(--shadow-btn); }
        .btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
        .btn-outline-primary { background: #fff; border: 1px solid var(--primary); color: var(--primary); }
        .btn-outline-primary:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
        .btn-accent { background: var(--accent); border-color: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(255,106,0,0.25); }
        .btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
        .btn-block { width: 100%; justify-content: center; }
        a:focus-visible, button:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(27,111,232,0.25);
            border-radius: 8px;
        }

        /* 眉题 / 标签 */
        .section-eyebrow {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1px;
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--title-color);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-head p { color: var(--text-color); font-size: 15px; line-height: 1.7; max-width: 560px; }
        .section-head.center { text-align: center; }
        .section-head.center p { margin-left: auto; margin-right: auto; }
        .section-head.inline { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 36px; }
        .link-more { color: var(--primary); font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }
        .link-more:hover { color: var(--primary-dark); }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
        }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .logo { display: flex; align-items: center; gap: 10px; }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 16px;
            box-shadow: 0 4px 12px rgba(27,111,232,0.3);
        }
        .logo-text { font-size: 20px; font-weight: 700; color: var(--title-color); letter-spacing: .5px; }
        .main-nav { display: flex; align-items: center; gap: 30px; }
        .main-nav a {
            position: relative;
            display: flex;
            align-items: center;
            height: 72px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-color);
            transition: color .2s ease;
        }
        .main-nav a:hover { color: var(--primary); }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: 0;
            width: 24px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }
        .nav-toggle span { width: 22px; height: 2px; background: var(--title-color); border-radius: 2px; transition: .2s; }

        /* 分类页 Hero */
        .page-hero {
            position: relative;
            padding: 80px 0 92px;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255,255,255,0.95) 0%, rgba(247,249,252,0.88) 55%, rgba(232,241,254,0.82) 100%);
        }
        .page-hero .container { position: relative; z-index: 2; }
        .breadcrumb-custom { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted-color); margin-bottom: 28px; }
        .breadcrumb-custom a { color: var(--muted-color); }
        .breadcrumb-custom a:hover { color: var(--primary); }
        .breadcrumb-custom .sep { color: var(--border-color); }
        .breadcrumb-custom .current { color: var(--text-color); font-weight: 500; }
        .hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 20px;
        }
        .page-hero h1 { font-size: 44px; font-weight: 700; line-height: 1.2; color: var(--title-color); margin-bottom: 16px; }
        .hero-sub { font-size: 17px; line-height: 1.8; color: var(--text-color); margin-bottom: 28px; max-width: 480px; }
        .hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
        .media-frame {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 12px 12px 0 rgba(27,111,232,0.08);
        }
        .media-frame img { width: 100%; height: 340px; object-fit: cover; }
        .hero-info-bar {
            position: absolute;
            left: -18px;
            bottom: 22px;
            background: #fff;
            border-radius: 12px;
            padding: 14px 22px;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-info-bar .info-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--accent);
            font-family: "DIN Alternate", "Bebas Neue", Arial, sans-serif;
        }
        .hero-info-bar .info-label { font-size: 13px; color: var(--text-color); }
        .hero-media { position: relative; }

        /* 图文介绍区 */
        .intro-section { padding: 80px 0; }
        .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
        .intro-media img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .intro-content h2 { font-size: 28px; font-weight: 700; color: var(--title-color); line-height: 1.35; margin-bottom: 16px; }
        .intro-content p { font-size: 15px; line-height: 1.8; color: var(--text-color); margin-bottom: 20px; }
        .check-list { margin-bottom: 28px; }
        .check-list li { display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--title-color); margin-bottom: 12px; }
        .check-list i {
            color: var(--primary);
            width: 20px;
            height: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 50%;
            font-size: 11px;
        }

        /* 核心服务要点 */
        .features-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--divider-color);
            border-bottom: 1px solid var(--divider-color);
        }
        .feature-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 44px; }
        .feature-card {
            display: flex;
            gap: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
        }
        .feature-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-3px); border-color: rgba(27,111,232,0.3); }
        .feature-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        .feature-card h3 { font-size: 17px; font-weight: 600; color: var(--title-color); margin-bottom: 8px; }
        .feature-card p { font-size: 14px; line-height: 1.7; color: var(--text-color); margin: 0; }
        .feature-card-wide { grid-column: 1 / -1; align-items: center; padding: 32px; }
        .feature-card-wide .feature-icon { width: 60px; height: 60px; font-size: 24px; }
        .feature-card-wide p { max-width: 720px; }

        /* 服务流程 */
        .process-section { padding: 80px 0; }
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 44px; }
        .process-item {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .process-item:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-3px); }
        .step-num {
            font-size: 34px;
            font-weight: 700;
            font-family: "DIN Alternate", "Bebas Neue", Arial, sans-serif;
            color: var(--primary);
            opacity: .28;
            display: block;
            margin-bottom: 14px;
            line-height: 1;
        }
        .process-item h3 { font-size: 16px; font-weight: 600; color: var(--title-color); margin-bottom: 8px; }
        .process-item p { font-size: 14px; color: var(--text-color); line-height: 1.7; margin: 0; }

        /* 精选内容 */
        .showcase-section { padding: 80px 0; }
        .showcase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .showcase-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow .25s ease, transform .25s ease;
        }
        .showcase-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-3px); }
        .card-image { height: 190px; overflow: hidden; }
        .card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
        .showcase-card:hover .card-image img { transform: scale(1.03); }
        .card-body { padding: 22px 22px 18px; }
        .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
        }
        .card-body h3 { font-size: 17px; font-weight: 600; color: var(--title-color); margin-bottom: 8px; }
        .card-body p {
            font-size: 14px;
            color: var(--text-color);
            line-height: 1.65;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--divider-color);
        }
        .meta-date { font-size: 13px; color: var(--muted-color); }
        .card-link { font-size: 14px; font-weight: 600; color: var(--primary); }
        .section-actions { display: flex; justify-content: center; gap: 14px; margin-top: 44px; flex-wrap: wrap; }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--divider-color);
            border-bottom: 1px solid var(--divider-color);
        }
        .faq-section .container { max-width: 880px; }
        .faq-section .section-head { margin-bottom: 40px; }
        .accordion-item {
            border: 1px solid var(--border-color) !important;
            border-radius: 12px !important;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .accordion-button { font-size: 16px; font-weight: 600; color: var(--title-color); background: #fff !important; padding: 20px 24px; box-shadow: none !important; }
        .accordion-button:not(.collapsed) { color: var(--primary) !important; background: var(--primary-light) !important; }
        .accordion-button:focus { box-shadow: 0 0 0 3px rgba(27,111,232,0.15) !important; outline: none; }
        .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 22px;
            font-weight: 300;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: transform .25s ease;
        }
        .accordion-button:not(.collapsed)::after { transform: rotate(45deg); }
        .accordion-body {
            padding: 20px 24px;
            color: var(--text-color);
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid var(--divider-color);
        }
        .faq-footer { text-align: center; margin-top: 28px; }
        .faq-footer a { color: var(--muted-color); font-size: 15px; }
        .faq-footer a:hover { color: var(--primary); }

        /* CTA */
        .cta-section { padding: 80px 0; }
        .cta-card {
            background: var(--primary-light);
            border-radius: 16px;
            padding: 48px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(27,111,232,0.08);
        }
        .cta-info { display: flex; flex-direction: column; justify-content: center; }
        .cta-info h2 { font-size: 26px; font-weight: 700; color: var(--title-color); margin-bottom: 14px; }
        .cta-info > p { font-size: 15px; color: var(--text-color); line-height: 1.7; margin-bottom: 24px; max-width: 420px; }
        .cta-contact { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
        .cta-contact span { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-color); }
        .cta-contact i {
            color: var(--primary);
            width: 32px;
            height: 32px;
            background: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            box-shadow: 0 2px 8px rgba(16,36,62,0.06);
        }
        .cta-form {
            background: #fff;
            border-radius: 12px;
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }
        .form-group { margin-bottom: 18px; }
        .form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--title-color); margin-bottom: 6px; }
        .form-control, .form-select {
            height: 44px;
            border: 1px solid #D6DFEA;
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            color: var(--title-color);
            background: #fff;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27,111,232,0.15); outline: none; }
        .form-control::placeholder { color: var(--muted-color); }

        /* 页脚 */
        .site-footer { background: #10243E; color: #C6D2E2; padding-top: 60px; }
        .site-footer .logo { margin-bottom: 0; }
        .site-footer .logo .logo-text { color: #fff; }
        .site-footer .logo .logo-icon { background: #fff; color: var(--primary); }
        .footer-main { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 44px; }
        .footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; color: #A8B6C8; }
        .footer-title { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 18px; }
        .footer-links li { margin-bottom: 10px; }
        .footer-links a { color: #C6D2E2; font-size: 14px; display: inline-block; transition: color .2s ease, padding-left .2s ease; }
        .footer-links a:hover { color: #fff; padding-left: 4px; }
        .footer-contact-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #C6D2E2; margin-bottom: 12px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-copy { font-size: 13px; color: #A8B6C8; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #C6D2E2;
            font-size: 14px;
            transition: background .2s ease, border-color .2s ease, color .2s ease;
        }
        .footer-social a:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

        /* 响应式 */
        @media (max-width: 1199px) {
            .hero-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
            .page-hero h1 { font-size: 36px; }
            .media-frame img { height: 300px; }
            .intro-grid { gap: 36px; }
            .cta-card { gap: 32px; }
        }
        @media (max-width: 991px) {
            .header-inner { height: 64px; }
            .nav-toggle { display: flex; }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 16px;
                right: 16px;
                background: #fff;
                border-radius: 12px;
                padding: 16px;
                flex-direction: column;
                gap: 8px;
                box-shadow: var(--shadow-card-hover);
                border: 1px solid var(--border-color);
            }
            .main-nav.open { display: flex; }
            .main-nav a { height: auto; padding: 12px 16px; border-radius: 8px; }
            .main-nav a:hover { background: var(--primary-light); }
            .page-hero { padding: 56px 0 64px; }
            .hero-grid { grid-template-columns: 1fr; gap: 40px; }
            .page-hero h1 { font-size: 32px; }
            .hero-sub { font-size: 16px; }
            .intro-section, .features-section, .process-section, .showcase-section, .faq-section, .cta-section { padding: 52px 0; }
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-media img { height: 280px; }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .showcase-grid { grid-template-columns: 1fr; }
            .feature-cards { grid-template-columns: 1fr 1fr; }
            .cta-card { grid-template-columns: 1fr; padding: 32px; }
            .footer-main { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 575px) {
            body { font-size: 13px; }
            .header-inner { padding: 0 12px; }
            .logo-text { font-size: 17px; }
            .page-hero { padding: 44px 0 52px; }
            .page-hero h1 { font-size: 28px; }
            .hero-sub { font-size: 15px; }
            .hero-info-bar { position: static; margin-top: 16px; justify-content: center; }
            .hero-media { display: flex; flex-direction: column; }
            .feature-cards { grid-template-columns: 1fr; }
            .feature-card-wide { grid-column: auto; }
            .process-grid { grid-template-columns: 1fr; }
            .section-head h2 { font-size: 22px; }
            .intro-content h2 { font-size: 22px; }
            .cta-card { padding: 20px; }
            .cta-form { padding: 20px; }
            .footer-main { grid-template-columns: 1fr; }
            .footer-bottom { justify-content: center; text-align: center; }
            .section-actions .btn { width: 100%; justify-content: center; }
            .card-image { height: 180px; }
        }