/* roulang page: index */
/* ===== 基础 reset 与设计变量 ===== */
:root {
    --color-primary: #0F766E;
    --color-primary-dark: #0B3C38;
    --color-accent: #F97316;
    --color-accent-hover: #EA580C;
    --color-bg-warm: #FAF9F7;
    --color-text-body: #1F2937;
    --color-text-sub: #6B7280;
    --color-border: #E5E7EB;
    --color-card-border: #F0F0EE;
    --radius-card: 1rem;
    --radius-btn: 0.75rem;
    --radius-pill: 999px;
    --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
    --space-section: 6rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
    background-color: var(--color-bg-warm);
    color: var(--color-text-body);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input {
    font-family: inherit;
}

/* ===== 通用容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.section {
    padding: var(--space-section) 0;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text-body);
    text-align: center;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-text-sub);
    text-align: center;
    margin-top: 0.5rem;
    margin-bottom: 2.5rem;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== 按钮系统 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--color-accent);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-btn);
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    border: 2px solid transparent;
}
.btn-primary:hover {
    background-color: var(--color-accent-hover);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}
.btn-primary:active {
    transform: translateY(1px);
}
.btn-primary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.3);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: #fff;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-btn);
    border: 1.5px solid var(--color-primary);
    transition: background-color 0.2s ease, transform 0.15s ease;
}
.btn-secondary:hover {
    background-color: rgba(15, 118, 110, 0.05);
}
.btn-secondary:active {
    transform: translateY(1px);
}
.btn-secondary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.25);
}

.btn-dark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: #0B3C38;
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-btn);
    border: 2px solid transparent;
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}
.btn-dark:hover {
    background-color: #0E4C46;
    box-shadow: 0 4px 12px rgba(11, 60, 56, 0.3);
}
.btn-dark:active {
    transform: translateY(1px);
}
.btn-dark:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(11, 60, 56, 0.3);
}

.btn-white-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: transparent;
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-btn);
    border: 1.5px solid rgba(255,255,255,0.6);
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}
.btn-white-outline:hover {
    background-color: rgba(255,255,255,0.12);
    border-color: #fff;
}
.btn-white-outline:active {
    transform: translateY(1px);
}
.btn-white-outline:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

/* ===== 导航 ===== */
.site-header {
    background: var(--color-bg-warm);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text-body);
    transition: opacity 0.15s ease;
}
.logo:hover {
    opacity: 0.85;
}
.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 0.65rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 800;
}
.logo-text .logo-brand {
    color: var(--color-primary);
}
.logo-text .logo-suffix {
    color: var(--color-accent);
}

.nav-download-btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    border-radius: var(--radius-btn);
}

.nav-channel-row {
    border-top: 1px solid var(--color-border);
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.nav-channel-row::-webkit-scrollbar {
    display: none;
}

.nav-channels {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0;
    white-space: nowrap;
}

.nav-channel {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 1.1rem;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-sub);
    background: transparent;
    transition: background-color 0.2s ease, color 0.2s ease;
}
.nav-channel:hover {
    background: rgba(15, 118, 110, 0.08);
    color: var(--color-primary);
}
.nav-channel.active {
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.mobile-menu-btn {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-btn);
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--color-text-body);
    transition: background-color 0.2s ease;
}
.mobile-menu-btn:hover {
    background-color: rgba(0,0,0,0.05);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    background: linear-gradient(135deg, #0F766E 0%, #0B3C38 100%);
    color: #fff;
    overflow: hidden;
    padding: 5rem 0 4.5rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 60%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(249,115,22,0.1) 0%, transparent 60%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.9);
    font-size: 0.8rem;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-pill);
    margin-bottom: 1.25rem;
}

.hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}
.hero h1 .hero-highlight {
    color: #FDBA74;
}

.hero-sub {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.8);
    max-width: 480px;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.hero-btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.25rem;
}

.hero-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-pill);
    padding: 0.5rem 1.1rem;
}
.hero-stat .stat-num {
    font-weight: 800;
    font-size: 1.125rem;
    color: #FDBA74;
}
.hero-stat .stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.75);
}

.hero-visual {
    position: relative;
}

.hero-img-wrap {
    border-radius: 1.25rem;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    aspect-ratio: 16/10;
    background: rgba(255,255,255,0.08);
}
.hero-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-float-card {
    position: absolute;
    bottom: -1.25rem;
    left: 1rem;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    border-radius: 1rem;
    padding: 0.875rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}
.hero-float-card .float-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}
.hero-float-card .float-text {
    font-size: 0.8rem;
    color: var(--color-text-sub);
    line-height: 1.4;
}

/* ===== 信任条 ===== */
.trust-bar {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 2.25rem 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}
.trust-item .trust-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.75rem;
    background: var(--color-brand-50, #EDFCF9);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}
.trust-item .trust-title {
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.3;
}
.trust-item .trust-text {
    font-size: 0.8rem;
    color: var(--color-text-sub);
}

/* ===== 功能亮点轮播 ===== */
.features-section {
    background: var(--color-bg-warm);
    overflow: hidden;
}

.carousel-main {
    position: relative;
    border-radius: 1.25rem;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-card);
    aspect-ratio: 16/9;
    margin-bottom: 1.5rem;
}
.carousel-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.carousel-tag {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0,0,0,0.55);
    color: #fff;
    font-size: 0.8rem;
    padding: 0.3rem 1rem;
    border-radius: var(--radius-pill);
    backdrop-filter: blur(4px);
    z-index: 2;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    color: var(--color-text-body);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 3;
    transition: all 0.2s ease;
    border: 1px solid rgba(0,0,0,0.05);
}
.carousel-arrow:hover {
    background: var(--color-primary);
    color: #fff;
}
.carousel-arrow.prev {
    left: 1rem;
}
.carousel-arrow.next {
    right: 1rem;
}

.carousel-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.carousel-thumb {
    border-radius: 0.75rem;
    overflow: hidden;
    aspect-ratio: 16/10;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.2s ease, opacity 0.2s ease;
    opacity: 0.7;
    padding: 0;
}
.carousel-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.carousel-thumb:hover {
    opacity: 1;
    border-color: var(--color-primary);
}
.carousel-thumb.active {
    border-color: var(--color-primary);
    opacity: 1;
}

/* ===== 数据墙 ===== */
.stats-wall {
    background: #0B3C38;
    color: #fff;
    padding: var(--space-section) 0;
}

.stats-wall .section-title {
    color: #fff;
}
.stats-wall .section-subtitle {
    color: rgba(255,255,255,0.6);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.stat-card {
    background: #114C46;
    border-radius: 1rem;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.stat-card .stat-number {
    font-size: 2.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, #FDBA74, #F97316);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}
.stat-card .stat-divider {
    width: 2rem;
    height: 2px;
    background: rgba(255,255,255,0.2);
    margin: 0.75rem auto;
}
.stat-card .stat-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
}
.stat-card .stat-desc {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
    margin-top: 0.25rem;
}

/* ===== 系统要求 ===== */
.sys-section {
    background: #fff;
}

.sys-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.sys-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sys-item {
    display: flex;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-warm);
    border: 1px solid var(--color-card-border);
    border-radius: 0.75rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.sys-item:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}
.sys-item .sys-icon {
    width: 38px;
    height: 38px;
    border-radius: 0.6rem;
    background: var(--color-brand-50, #EDFCF9);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}
.sys-item .sys-title {
    font-weight: 600;
    font-size: 0.95rem;
}
.sys-item .sys-desc {
    font-size: 0.85rem;
    color: var(--color-text-sub);
    line-height: 1.5;
}

.sys-visual {
    border-radius: 1.25rem;
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
    box-shadow: var(--shadow-card);
}
.sys-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.sys-visual-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.6), transparent);
    color: #fff;
}
.sys-visual-overlay .overlay-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}
.sys-visual-overlay .overlay-text {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.8);
}
.sys-visual-btns {
    margin-top: 1rem;
}

/* ===== 评价墙 ===== */
.testimonials-section {
    background: var(--color-bg-warm);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.testimonial-card {
    background: #fff;
    border: 1px solid var(--color-card-border);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.testimonial-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.testimonial-stars {
    color: #F59E0B;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}
.testimonial-text {
    font-size: 0.9rem;
    color: var(--color-text-body);
    line-height: 1.7;
    flex: 1;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
}
.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.875rem;
}
.testimonial-name {
    font-weight: 600;
    font-size: 0.9rem;
}
.testimonial-role {
    font-size: 0.75rem;
    color: var(--color-text-sub);
}
.testimonial-source {
    font-size: 0.75rem;
    color: var(--color-text-sub);
    margin-left: auto;
}

/* ===== 最新资讯 CMS 区域 ===== */
.news-section {
    background: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.news-card {
    border: 1px solid var(--color-card-border);
    border-radius: 1rem;
    overflow: hidden;
    background: #fff;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.news-card-img {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: linear-gradient(135deg, #EDFCF9, #F0F0EE);
}
.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.news-card:hover .news-card-img img {
    transform: scale(1.03);
}
.news-card-cat {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(4px);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-pill);
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}
.news-card-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.news-card-title {
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.5;
    color: var(--color-text-body);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0.5rem;
}
.news-card-desc {
    font-size: 0.875rem;
    color: var(--color-text-sub);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    flex: 1;
}
.news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
}
.news-card-time {
    font-size: 0.8rem;
    color: var(--color-text-sub);
}
.news-card-link {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    transition: letter-spacing 0.2s ease;
}
.news-card-link:hover {
    letter-spacing: 0.04em;
}

.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--color-bg-warm);
    border: 1px dashed var(--color-border);
    border-radius: 1rem;
    color: var(--color-text-sub);
    font-size: 0.95rem;
}
.news-empty .empty-icon {
    font-size: 2rem;
    color: #D1D5DB;
    margin-bottom: 0.75rem;
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--color-bg-warm);
}

.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--color-card-border);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}
.faq-item:hover {
    box-shadow: var(--shadow-card);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text-body);
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s ease;
}
.faq-question:hover {
    color: var(--color-primary);
}
.faq-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1.5px solid var(--color-text-sub);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: var(--color-text-sub);
    transition: transform 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
    flex-shrink: 0;
}
.faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer-inner {
    padding: 0 1.25rem 1.25rem;
    font-size: 0.9rem;
    color: #4B5563;
    line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(120deg, #0F766E, #0B3C38);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -80%;
    left: -20%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.06), transparent 60%);
}
.cta-inner {
    text-align: center;
    padding: var(--space-section) 0;
    position: relative;
    z-index: 2;
}
.cta-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1rem;
}
.cta-sub {
    font-size: 1rem;
    color: rgba(255,255,255,0.7);
    max-width: 560px;
    margin: 0 auto 2rem;
}
.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.cta-note {
    margin-top: 1.25rem;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

/* ===== 页脚 ===== */
.site-footer {
    background: #0B3C38;
    color: rgba(255,255,255,0.7);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 2rem;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: #fff;
    margin-bottom: 0.75rem;
}
.footer-brand .footer-logo .logo-brand {
    color: #66E3D4;
}
.footer-brand .footer-logo .logo-suffix {
    color: #FDBA74;
}
.footer-desc {
    font-size: 0.85rem;
    line-height: 1.7;
    max-width: 320px;
}

.footer-col-title {
    font-weight: 600;
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.footer-links a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: color 0.2s ease;
}
.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    flex-wrap: wrap;
}
.footer-bottom a {
    color: rgba(255,255,255,0.5);
}
.footer-bottom a:hover {
    color: #fff;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .hero h1 {
        font-size: 2.25rem;
    }
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --space-section: 4rem;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .nav-download-btn {
        display: none;
    }
    .nav-channels {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .hero {
        padding: 3rem 0 4rem;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .hero-sub {
        font-size: 0.95rem;
    }
    .hero-btn-group {
        flex-direction: column;
        width: 100%;
    }
    .hero-btn-group .btn-primary,
    .hero-btn-group .btn-secondary {
        width: 100%;
    }
    .hero-stats {
        flex-direction: column;
        gap: 0.625rem;
    }
    .hero-stat {
        justify-content: center;
    }
    .hero-float-card {
        display: none;
    }
    .trust-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .sys-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .carousel-thumbs {
        grid-template-columns: repeat(4, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    .cta-buttons .btn-primary,
    .cta-buttons .btn-white-outline {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .trust-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .stat-card .stat-number {
        font-size: 1.75rem;
    }
    .carousel-thumbs {
        grid-template-columns: repeat(2, 1fr);
    }
    .btn-primary, .btn-secondary, .btn-dark, .btn-white-outline {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-deeper: #0B3C38;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg-warm: #FAF9F7;
            --text-main: #1F2937;
            --text-sub: #6B7280;
            --text-light: #9CA3AF;
            --border-soft: #F0F0EE;
            --card-bg: #FFFFFF;
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-btn: none;
            --space-section: 5rem;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ============ 导航 ============ */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-soft);
            position: relative;
            z-index: 50;
        }

        .nav-brand-row {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 0.6rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            flex-shrink: 0;
        }

        .logo-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: #111827;
            letter-spacing: -0.3px;
        }

        .logo-suffix {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.45rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            font-family: inherit;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
        }

        .btn-primary:hover {
            background: var(--accent-dark);
        }

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

        .btn-primary:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.3);
            outline-offset: 2px;
        }

        .btn-secondary {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
        }

        .btn-secondary:hover {
            background: rgba(15, 118, 110, 0.06);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, 0.25);
        }

        .btn-white {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            padding: 0.85rem 2.2rem;
            border-radius: var(--radius-md);
        }

        .btn-white:hover {
            background: rgba(255, 255, 255, 0.92);
        }

        .nav-channel-row {
            border-top: 1px solid var(--border-soft);
            background: #fff;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 0;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-channels::-webkit-scrollbar {
            display: none;
        }

        .nav-channel {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.1rem;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-sub);
            background: transparent;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .nav-channel i {
            font-size: 0.8rem;
        }

        .nav-channel:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
        }

        .nav-channel.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-soft);
            background: #fff;
            color: var(--text-main);
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .mobile-menu-btn:hover {
            background: rgba(15, 118, 110, 0.06);
            color: var(--primary);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 100;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
        }

        .mobile-drawer-panel {
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 82%;
            max-width: 320px;
            background: #fff;
            padding: 1.5rem;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }

        .mobile-drawer.open .mobile-drawer-panel {
            transform: translateX(0);
        }

        .drawer-close {
            position: absolute;
            top: 1rem;
            right: 1rem;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 0.5rem;
            background: var(--bg-warm);
            border: none;
            cursor: pointer;
        }

        .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            margin-top: 3rem;
        }

        .drawer-nav a {
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
            font-weight: 500;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .drawer-nav a:hover {
            background: rgba(15, 118, 110, 0.07);
            color: var(--primary);
        }

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

        /* ============ 页头 ============ */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deeper) 100%);
            padding: 4.5rem 0 5rem;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -6rem;
            right: -4rem;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -8rem;
            left: 20%;
            width: 520px;
            height: 520px;
            border-radius: 50%;
            background: rgba(249, 115, 22, 0.06);
            pointer-events: none;
        }

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

        .page-hero-content {
            color: #fff;
            max-width: 680px;
        }

        .page-hero-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 1rem;
            letter-spacing: -0.5px;
        }

        .page-hero-content h1 .hl {
            color: #FBBF24;
        }

        .page-hero-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.8;
            margin: 0 0 2rem;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-tags {
            display: flex;
            gap: 0.6rem;
            margin-top: 2.2rem;
            flex-wrap: wrap;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            padding: 0.35rem 1rem;
            border-radius: 999px;
            font-size: 0.8rem;
            backdrop-filter: blur(6px);
        }

        .hero-figure {
            position: relative;
            margin-top: 2.5rem;
        }

        .hero-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
            position: relative;
        }

        .hero-card img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .hero-float-card {
            position: absolute;
            left: 1.25rem;
            bottom: 1.25rem;
            right: 1.25rem;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-md);
            padding: 0.85rem 1.1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }

        .float-update-tag {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
        }

        .float-update-desc {
            font-size: 0.85rem;
            color: var(--text-main);
            font-weight: 500;
        }

        .float-update-link {
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 600;
        }

        /* ============ 统计条 ============ */
        .stats-band {
            background: #fff;
            border-bottom: 1px solid var(--border-soft);
            padding: 2rem 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-item {
            text-align: center;
            padding: 0.5rem 0.75rem;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
        }

        .stat-number small {
            font-size: 1rem;
            font-weight: 600;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-sub);
            margin-top: 0.25rem;
        }

        /* ============ 通用区块标题 ============ */
        .section {
            padding: var(--space-section) 0;
        }

        .section-title-wrap {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 3rem;
        }

        .section-title-wrap h2 {
            font-size: 1.875rem;
            font-weight: 700;
            color: #111827;
            margin: 0 0 0.75rem;
            letter-spacing: -0.4px;
        }

        .section-title-wrap p {
            font-size: 0.95rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.75;
        }

        .section-title-left h2 {
            text-align: left;
            margin: 0 0 1rem;
        }

        .section-title-left p {
            text-align: left;
        }

        /* ============ 核心价值区 ============ */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .value-card {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .value-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .value-icon {
            width: 48px;
            height: 48px;
            border-radius: 0.85rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.15rem;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .value-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #111827;
            margin: 0 0 0.5rem;
        }

        .value-card p {
            font-size: 0.875rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ 近期版本区 ============ */
        .versions-section {
            background: var(--primary-deeper);
            padding: 5rem 0;
        }

        .versions-section .section-title-wrap h2 {
            color: #fff;
        }

        .versions-section .section-title-wrap p {
            color: rgba(255, 255, 255, 0.7);
        }

        .version-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .version-card {
            background: #114C46;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform 0.2s ease, border-color 0.2s ease;
        }

        .version-card:hover {
            transform: translateY(-4px);
            border-color: rgba(249, 115, 22, 0.4);
        }

        .version-card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }

        .version-card-body {
            padding: 1.4rem 1.4rem 1.6rem;
        }

        .version-badge {
            display: inline-flex;
            align-items: center;
            background: rgba(249, 115, 22, 0.16);
            color: #FBBF24;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.8rem;
            border-radius: 999px;
            margin-bottom: 0.75rem;
        }

        .version-card h3 {
            color: #fff;
            font-size: 1.15rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
        }

        .version-card p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.85rem;
            line-height: 1.7;
            margin: 0 0 1rem;
        }

        .version-readmore {
            font-size: 0.85rem;
            font-weight: 500;
            color: #FBBF24;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: gap 0.2s ease;
        }

        .version-readmore:hover {
            gap: 0.7rem;
        }

        /* ============ 适合人群/场景 ============ */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .scene-card {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.2s ease;
        }

        .scene-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

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

        .scene-card-body {
            padding: 1.4rem;
        }

        .scene-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
            color: #111827;
        }

        .scene-card-body p {
            font-size: 0.875rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ 升级流程 ============ */
        .steps-section {
            background: #fff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            counter-reset: step;
        }

        .step-card {
            text-align: center;
            padding: 2rem 1.5rem;
            border-radius: var(--radius-lg);
            background: var(--bg-warm);
            border: 1px solid var(--border-soft);
            position: relative;
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
            color: #111827;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--text-sub);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            width: 100%;
            background: none;
            border: none;
            padding: 1.1rem 1.4rem;
            font-family: inherit;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: rgba(15, 118, 110, 0.03);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 1.4rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-answer p {
            padding-bottom: 1.2rem;
            font-size: 0.9rem;
            color: #4B5563;
            line-height: 1.8;
            margin: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(120deg, var(--accent) 0%, var(--primary-dark) 100%);
            padding: 4.5rem 0;
            text-align: center;
            color: #fff;
        }

        .cta-section h2 {
            font-size: 1.875rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.92);
            max-width: 560px;
            margin: 0 auto 2.2rem;
            line-height: 1.75;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .cta-note {
            margin-top: 1.2rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--primary-deeper);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 2.5rem;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.8rem;
        }

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

        .footer-logo .logo-suffix {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ 图片占位 ============ */
        .image-placeholder {
            background: linear-gradient(135deg, #E2E8F0 0%, #CBD5E1 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #94A3B8;
            font-size: 2rem;
            min-height: 150px;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .value-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

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

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

            .page-hero {
                padding: 3.5rem 0 4rem;
            }

            .page-hero-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 3.5rem;
            }

            .nav-brand-row {
                height: 58px;
            }

            .nav-actions .btn-primary {
                display: none;
            }

            .mobile-menu-btn {
                display: inline-flex;
            }

            .nav-channel-row {
                display: none;
            }

            .page-hero-content h1 {
                font-size: 1.9rem;
            }

            .hero-card img {
                height: 220px;
            }

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

            .value-grid,
            .version-grid,
            .scene-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .cta-section {
                padding: 3.5rem 1.5rem;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

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

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

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

        @media (max-width: 480px) {
            .page-hero-content h1 {
                font-size: 1.65rem;
            }

            .page-hero-content p {
                font-size: 0.95rem;
            }

            .section-title-wrap h2 {
                font-size: 1.5rem;
            }

            .logo-brand,
            .logo-suffix {
                font-size: 1.15rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }

            .nav-brand-row {
                height: 54px;
            }

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

            .stat-number {
                font-size: 1.4rem;
            }

            .stat-label {
                font-size: 0.8rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-deep: #0B3C38;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg-warm: #FAF9F7;
            --text-main: #1F2937;
            --text-sub: #6B7280;
            --text-light: #9CA3AF;
            --border-soft: #F0F0EE;
            --border-line: #E5E7EB;
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "sans-serif";
            background: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-warm);
            border-bottom: 1px solid var(--border-line);
            box-shadow: 0 1px 8px rgba(0,0,0,0.03);
        }
        .header-brand-row {
            border-bottom: 1px solid var(--border-line);
            background: #fff;
        }
        .header-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            text-decoration: none;
        }
        .logo-icon {
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 0.625rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .logo-brand {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
        }
        .logo-suffix {
            font-weight: 600;
            font-size: 1.25rem;
            color: var(--accent);
        }
        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            background: var(--accent);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-md);
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary-sm:hover {
            background: var(--accent-dark);
        }
        .btn-primary-sm:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.3);
            outline-offset: 2px;
        }
        .mobile-menu-btn {
            display: none;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-line);
            background: #fff;
            color: var(--text-main);
            font-size: 1rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }
        .mobile-menu-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .nav-channel-row {
            background: #fff;
            border-bottom: 1px solid var(--border-line);
        }
        .nav-channels {
            display: flex;
            gap: 0.375rem;
            overflow-x: auto;
            padding: 0.625rem 0;
            scrollbar-width: none;
        }
        .nav-channels::-webkit-scrollbar {
            display: none;
        }
        .nav-channel {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-main);
            background: transparent;
            text-decoration: none;
            white-space: nowrap;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
        }
        .nav-channel:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
        }
        .nav-channel.active {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: rgba(15, 118, 110, 0.04);
            border-bottom: 1px solid var(--border-soft);
            padding: 1rem 0;
        }
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .breadcrumb-links {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
        }
        .breadcrumb-links a {
            color: var(--text-sub);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb-links a:hover {
            color: var(--primary);
        }
        .breadcrumb-links .sep {
            color: #D1D5DB;
            font-size: 0.75rem;
        }
        .breadcrumb-links .current {
            color: var(--text-main);
            font-weight: 500;
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .category-pill {
            background: var(--primary);
            color: #fff;
            padding: 0.25rem 0.875rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            white-space: nowrap;
            box-shadow: 0 2px 6px rgba(15, 118, 110, 0.2);
        }

        /* ===== Article Header ===== */
        .article-header {
            padding: 2.5rem 0 1.25rem;
            background: var(--bg-warm);
        }
        .article-header h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .article-excerpt {
            font-size: 1rem;
            color: var(--text-sub);
            line-height: 1.75;
            max-width: 720px;
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.8125rem;
            color: var(--text-light);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }
        .article-meta i {
            color: var(--primary);
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 1.5rem 0 4rem;
            background: var(--bg-warm);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2rem;
            align-items: start;
        }
        .article-content {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-card);
        }
        .article-cover-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 1.5rem;
            position: relative;
        }
        .article-cover-image img {
            width: 100%;
            aspect-ratio: 16/7;
            object-fit: cover;
        }
        .article-cover-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 60, 56, 0.25), transparent 40%);
            pointer-events: none;
        }

        /* Article body typography */
        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: #374151;
        }
        .article-body p {
            margin-bottom: 1.25rem;
        }
        .article-body h2 {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 2rem 0 1rem;
            padding-left: 0.875rem;
            border-left: 3px solid var(--primary);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 1.5rem 0 0.75rem;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.25rem 1.25rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
        }
        .article-body ul li {
            list-style: disc;
        }
        .article-body ol li {
            list-style: decimal;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(15, 118, 110, 0.05);
            padding: 1rem 1.25rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: #4B5563;
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid rgba(15, 118, 110, 0.3);
            transition: border-color 0.2s;
        }
        .article-body a:hover {
            border-color: var(--primary);
        }

        /* Share row */
        .share-row {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-line);
            flex-wrap: wrap;
        }
        .share-label {
            font-size: 0.875rem;
            color: var(--text-sub);
            font-weight: 500;
        }
        .share-actions {
            display: flex;
            gap: 0.5rem;
            flex: 1;
            min-width: 240px;
        }
        .share-input {
            flex: 1;
            padding: 0.5rem 0.875rem;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-sm);
            font-size: 0.8125rem;
            color: var(--text-sub);
            background: var(--bg-warm);
            min-width: 0;
        }
        .share-copy-btn {
            padding: 0.5rem 1.125rem;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--text-main);
            font-size: 0.8125rem;
            cursor: pointer;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            white-space: nowrap;
        }
        .share-copy-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Not found */
        .not-found {
            text-align: center;
            padding: 3rem 1rem;
        }
        .not-found-icon {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 1rem;
            opacity: 0.6;
        }
        .not-found h2 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }
        .not-found p {
            color: var(--text-sub);
            font-size: 0.9375rem;
            margin-bottom: 1.5rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--accent);
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9375rem;
            transition: all 0.2s;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-1px);
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            position: sticky;
            top: 120px;
        }
        .sidebar-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-card);
        }
        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            padding-bottom: 0.75rem;
            border-bottom: 1px solid var(--border-line);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card h3 i {
            color: var(--primary);
            font-size: 0.875rem;
        }
        .recommend-list {
            list-style: none;
        }
        .recommend-list li {
            padding: 0.625rem 0;
            border-bottom: 1px dashed var(--border-line);
        }
        .recommend-list li:last-child {
            border-bottom: none;
        }
        .recommend-list a {
            display: flex;
            justify-content: space-between;
            gap: 0.75rem;
            text-decoration: none;
            transition: all 0.2s;
        }
        .rec-title {
            font-size: 0.875rem;
            color: var(--text-main);
            line-height: 1.5;
            flex: 1;
            transition: color 0.2s;
        }
        .recommend-list a:hover .rec-title {
            color: var(--primary);
        }
        .rec-date {
            font-size: 0.75rem;
            color: var(--text-light);
            white-space: nowrap;
            padding-top: 0.1875rem;
        }
        .sidebar-home-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1rem;
            border-radius: var(--radius-md);
            border: 1.5px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: all 0.2s;
            background: #fff;
        }
        .sidebar-home-btn:hover {
            background: rgba(15, 118, 110, 0.05);
        }

        /* ===== Related ===== */
        .related-section {
            padding: 4rem 0;
            background: #fff;
            border-top: 1px solid var(--border-soft);
        }
        .section-title-centered {
            font-size: 1.875rem;
            font-weight: 700;
            color: var(--text-main);
            text-align: center;
            margin-bottom: 0.375rem;
        }
        .section-sub-centered {
            text-align: center;
            color: var(--text-sub);
            font-size: 0.9375rem;
            margin-bottom: 2rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .related-card {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            text-decoration: none;
            box-shadow: var(--shadow-card);
            transition: all 0.25s ease;
            display: block;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .related-card .card-cover {
            aspect-ratio: 16/9;
            background-size: cover;
            background-position: center;
            position: relative;
            background-color: var(--primary);
        }
        .related-card .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 60, 56, 0.2), transparent 40%);
        }
        .category-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: rgba(15, 118, 110, 0.92);
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            z-index: 1;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body {
            padding: 1.25rem 1.375rem 1.375rem;
        }
        .related-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-excerpt {
            font-size: 0.8125rem;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 0.75rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.75rem;
            color: var(--text-light);
        }
        .card-meta .read-more {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            transition: transform 0.2s ease;
        }
        .related-card:hover .read-more {
            transform: translateX(4px);
        }

        /* ===== CTA ===== */
        .cta-simple {
            background: linear-gradient(120deg, var(--primary-dark), var(--primary-deep));
            padding: 3.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-simple::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(15, 118, 110, 0.3);
            border-radius: 50%;
        }
        .cta-simple::after {
            content: "";
            position: absolute;
            bottom: -60%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: rgba(249, 115, 22, 0.1);
            border-radius: 50%;
        }
        .cta-simple .container {
            position: relative;
            z-index: 1;
        }
        .cta-simple h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.625rem;
            letter-spacing: -0.01em;
        }
        .cta-simple p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9375rem;
            margin-bottom: 1.5rem;
            max-width: 420px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-accent-lg {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 0.875rem 2.5rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
        }
        .btn-accent-lg:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
        }
        .btn-accent-lg:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.3);
            outline-offset: 2px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.625rem;
            margin-bottom: 1rem;
        }
        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-col-title {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            font-size: 0.875rem;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.5rem;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.6);
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                align-items: stretch;
            }
            .sidebar-card {
                flex: 1;
            }
            .sidebar-home-btn {
                width: 200px;
                align-self: center;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: inline-flex;
            }
            .nav-channel-row {
                display: none;
                position: absolute;
                left: 0;
                right: 0;
                top: 100%;
                background: #fff;
                box-shadow: var(--shadow-hover);
                border-bottom: 1px solid var(--border-line);
            }
            .nav-channel-row.open {
                display: block;
            }
            .nav-channels {
                flex-direction: column;
                padding: 0.75rem;
                overflow-x: visible;
            }
            .nav-channel {
                width: 100%;
                justify-content: flex-start;
                border-radius: var(--radius-sm);
            }
            .article-header h1 {
                font-size: 1.625rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-home-btn {
                width: 100%;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .breadcrumb-section {
                padding: 0.75rem 0;
            }
            .breadcrumb-links .current {
                max-width: 180px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .article-header h1 {
                font-size: 1.375rem;
            }
            .article-content {
                padding: 1.125rem;
                border-radius: 1rem;
            }
            .article-body {
                font-size: 0.9375rem;
            }
            .related-section {
                padding: 3rem 0;
            }
            .cta-simple {
                padding: 2.5rem 0;
            }
            .cta-simple h2 {
                font-size: 1.375rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .shame-input {
                min-width: 120px;
            }
            .share-actions {
                min-width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0F766E;
            --primary-dark: #115E59;
            --primary-deep: #0B3C38;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --bg: #FAF9F7;
            --text: #1F2937;
            --text-secondary: #6B7280;
            --border: #E5E7EB;
            --card-bg: #FFFFFF;
            --card-border: #F0F0EE;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
            --transition: all 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
        }
        .nav-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 6px rgba(15, 118, 110, 0.25);
        }
        .logo-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .logo-suffix {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: #fff;
            color: var(--text);
            font-size: 1rem;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: var(--bg);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.45rem;
            border-radius: var(--radius-md);
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(249, 115, 22, 0.3);
            outline-offset: 2px;
        }
        .btn-outline {
            background: #fff;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.05);
        }
        .btn-white {
            background: #fff;
            color: var(--primary-dark);
        }
        .btn-white:hover {
            background: rgba(255, 255, 255, 0.88);
        }
        .btn-sm {
            padding: 0.45rem 1.1rem;
            font-size: 0.875rem;
        }
        .btn-lg {
            padding: 0.85rem 2.2rem;
            font-size: 1rem;
        }
        .nav-channel-row {
            border-top: 1px solid rgba(0, 0, 0, 0.04);
            background: #fff;
        }
        .nav-channels {
            display: flex;
            gap: 0.4rem;
            padding: 0.5rem 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
        }
        .nav-channels::-webkit-scrollbar {
            display: none;
        }
        .nav-channel {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.38rem 0.95rem;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-channel i {
            font-size: 0.8rem;
            opacity: 0.8;
        }
        .nav-channel:hover {
            background: rgba(15, 118, 110, 0.08);
            color: var(--primary);
        }
        .nav-channel.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-channel.active i {
            opacity: 1;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--primary-deep) 100%);
            padding: 4rem 0 4.5rem;
            position: relative;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .page-hero-content h1 {
            font-size: 2.75rem;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 0.75rem;
        }
        .page-hero-content p {
            font-size: 1.05rem;
            opacity: 0.9;
            line-height: 1.8;
            max-width: 640px;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 1.2rem;
        }

        /* ===== Guide Cards ===== */
        .guide-section {
            padding: 5rem 0;
        }
        .section-heading {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 2.8rem;
        }
        .section-heading .section-eyebrow {
            display: inline-block;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.25rem 0.9rem;
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }
        .section-heading h2 {
            font-size: 1.875rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .section-heading p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        .guide-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .guide-card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: linear-gradient(135deg, #e6f7f5, #f0f0f0);
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .guide-card:hover .guide-card-img img {
            transform: scale(1.03);
        }
        .guide-card-img .img-placeholder {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: rgba(15, 118, 110, 0.35);
        }
        .guide-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 0.2rem 0.75rem;
            border-radius: 999px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            backdrop-filter: blur(4px);
        }
        .guide-card-body {
            padding: 1.4rem 1.4rem 1.2rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 0.55rem;
            color: var(--text);
        }
        .guide-card-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
            flex: 1;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-secondary);
            border-top: 1px solid rgba(0, 0, 0, 0.04);
            padding-top: 0.85rem;
        }
        .guide-card-meta .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--primary);
            font-weight: 500;
            transition: var(--transition);
        }
        .guide-card-meta .read-more:hover {
            gap: 0.55rem;
            color: var(--primary-dark);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--primary-deep);
            padding: 5rem 0;
            color: #fff;
        }
        .steps-section .section-heading h2 {
            color: #fff;
        }
        .steps-section .section-heading p {
            color: rgba(255, 255, 255, 0.7);
        }
        .steps-section .section-eyebrow {
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }
        .step-card {
            background: #114C46;
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .step-card:hover {
            background: #15554E;
            transform: translateY(-3px);
        }
        .step-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 0.8rem;
            letter-spacing: -0.02em;
        }
        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #fff;
        }
        .step-card p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }
        .step-arrow {
            position: absolute;
            top: 50%;
            right: -0.9rem;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.25);
            font-size: 1rem;
            z-index: 2;
        }
        .steps-grid .step-card:last-child .step-arrow {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 5rem 0;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 1.1rem 1.4rem;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            gap: 1rem;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 1.4rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.4rem 1.2rem;
        }

        /* ===== Recommend ===== */
        .recommend-section {
            padding: 4rem 0 5rem;
            background: #fff;
            border-top: 1px solid rgba(0, 0, 0, 0.04);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.2rem;
        }
        .recommend-card {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: var(--bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--card-border);
            padding: 1.2rem 1.3rem;
            transition: var(--transition);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(15, 118, 110, 0.2);
        }
        .recommend-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(15, 118, 110, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .recommend-card:nth-child(2) .recommend-icon {
            background: rgba(249, 115, 22, 0.12);
            color: var(--accent);
        }
        .recommend-card:nth-child(3) .recommend-icon {
            background: rgba(15, 118, 110, 0.14);
            color: var(--primary-dark);
        }
        .recommend-info h3 {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 0.2rem;
        }
        .recommend-info p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }
        .recommend-link {
            margin-left: auto;
            color: var(--primary);
            font-size: 0.85rem;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(120deg, var(--accent) 0%, var(--primary) 100%);
            padding: 4.5rem 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 1.8rem;
        }
        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-dark {
            background: #1F2937;
            color: #fff;
        }
        .btn-dark:hover {
            background: #111827;
        }
        .cta-note {
            margin-top: 1.4rem;
            font-size: 0.85rem;
            opacity: 0.75;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 2rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.75rem;
        }
        .footer-logo .logo-icon {
            width: 30px;
            height: 30px;
            font-size: 0.85rem;
        }
        .footer-logo .logo-brand {
            color: #fff;
            font-size: 1.1rem;
        }
        .footer-logo .logo-suffix {
            font-size: 1.1rem;
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 340px;
            font-size: 0.88rem;
        }
        .footer-col-title {
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 0.88rem;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.6rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .step-arrow {
                display: none;
            }
            .recommend-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.9rem;
            }
            .recommend-card {
                flex-direction: column;
                text-align: center;
                padding: 1.2rem 1rem;
            }
            .recommend-info p {
                font-size: 0.75rem;
            }
            .recommend-link {
                margin-left: 0;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-actions .btn {
                display: none;
            }
            .nav-brand-row {
                height: 60px;
            }
            .nav-channel-row {
                overflow-x: auto;
                border-top: 1px solid rgba(0, 0, 0, 0.04);
            }
            .nav-channels {
                padding: 0.45rem 0.75rem;
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            .nav-channels {
                display: flex;
                gap: 0.35rem;
            }
            .nav-channel {
                font-size: 0.82rem;
                padding: 0.3rem 0.8rem;
                white-space: nowrap;
            }
            .page-hero {
                padding: 3rem 0;
            }
            .page-hero-content h1 {
                font-size: 2.1rem;
            }
            .page-hero-content p {
                font-size: 0.95rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .guide-section {
                padding: 3.5rem 0;
            }
            .steps-section {
                padding: 3.5rem 0;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-section {
                padding: 3.5rem 0;
            }
            .recommend-section {
                padding: 3rem 0 3.5rem;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .recommend-card {
                flex-direction: row;
                text-align: left;
            }
            .recommend-link {
                margin-left: auto;
            }
            .cta-section {
                padding: 3.5rem 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-buttons .btn {
                width: 100%;
                max-width: 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .page-hero-content h1 {
                font-size: 1.8rem;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .guide-card-body {
                padding: 1.1rem;
            }
            .brand .logo-brand,
            .brand .logo-suffix {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .nav-brand-row {
                padding: 0 0.75rem;
            }
            .container {
                padding: 0 0.9rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }