/* roulang page: index */
:root {
    --c-bg: #0E0C0A;
    --c-bg-deep: #1A1613;
    --c-gold: #C9A227;
    --c-gold-light: #D4AF37;
    --c-amber: #B8860B;
    --c-text: #F2EDE4;
    --c-text-body: #D8CFC3;
    --c-muted: #9C948A;
    --c-border: rgba(201,162,39,0.25);
    --c-border-hover: rgba(201,162,39,0.6);
    --radius: 12px;
    --shadow: 0 12px 30px rgba(0,0,0,0.5);
    --transition: all 0.3s ease;
    --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--c-bg);
    color: var(--c-text-body);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; }
a { color: var(--c-gold-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--c-gold); }
ul, ol { list-style: none; }

/* ===== 顶部分隔条 ===== */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 42px;
    background: rgba(8,7,5,0.96);
    border-bottom: 1px solid rgba(201,162,39,0.12);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1100;
    font-size: 12.5px;
    color: var(--c-muted);
    letter-spacing: 0.06em;
}
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-left .dot {
    width: 7px; height: 7px;
    background: var(--c-gold);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px rgba(201,162,39,0.7);
}
.topbar-right { display: flex; align-items: center; gap: 18px; }
.topbar-right a { color: var(--c-muted); font-size: 12.5px; }
.topbar-right a:hover { color: var(--c-gold-light); }
.topbar-right .sep { opacity: 0.3; }

/* ===== 左侧竖向导航 ===== */
.sidebar {
    position: fixed;
    top: 42px; bottom: 0; left: 0;
    width: 260px;
    background: linear-gradient(180deg, #0E0C0A 0%, #1A1613 100%);
    border-right: 1px solid rgba(201,162,39,0.12);
    padding: 36px 24px 24px;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
}
.brand-block {
    display: block;
    margin-bottom: 36px;
    padding-bottom: 22px;
    border-bottom: 1px solid rgba(201,162,39,0.15);
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 46px; height: 46px;
    padding: 0 10px;
    background: linear-gradient(135deg, var(--c-gold-light) 0%, var(--c-amber) 100%);
    color: #1A1613;
    font-weight: 800;
    font-size: 15px;
    border-radius: 10px;
    margin-bottom: 14px;
    letter-spacing: 1px;
    box-shadow: 0 6px 18px rgba(201,162,39,0.25);
}
.brand-name {
    display: block;
    color: var(--c-text);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.4;
}
.brand-sub {
    display: block;
    color: var(--c-muted);
    font-size: 13px;
    margin-top: 6px;
    letter-spacing: 0.04em;
}
.brand-en {
    display: block;
    color: rgba(156,148,138,0.45);
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    margin-top: 4px;
}
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; }
.sidebar-nav .nav-link {
    position: relative;
    display: block;
    padding: 13px 18px;
    color: var(--c-text-body);
    font-size: 15px;
    border-radius: 8px;
    border-left: 3px solid transparent;
    transition: var(--transition);
}
.sidebar-nav .nav-link:hover {
    background: rgba(255,255,255,0.04);
    color: var(--c-text);
    border-left-color: var(--c-gold);
    padding-left: 24px;
}
.sidebar-nav .nav-link.active {
    color: var(--c-gold-light);
    border-left-color: var(--c-gold);
    background: rgba(201,162,39,0.08);
    font-weight: 600;
}
.sidebar-nav .nav-link i {
    width: 20px;
    font-size: 13px;
    color: var(--c-amber);
    margin-right: 4px;
    display: inline-block;
}
.sidebar-nav .nav-link.active i { color: var(--c-gold-light); }
.sidebar-quick {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
}
.sidebar-quick-title {
    font-size: 11px;
    letter-spacing: 0.16em;
    color: rgba(156,148,138,0.6);
    text-transform: uppercase;
    margin-bottom: 12px;
    padding-left: 4px;
}
.sidebar-quick a {
    display: block;
    padding: 7px 16px;
    color: var(--c-muted);
    font-size: 13.5px;
    border-radius: 6px;
    transition: var(--transition);
}
.sidebar-quick a:hover {
    color: var(--c-gold-light);
    background: rgba(201,162,39,0.05);
    padding-left: 22px;
}
.sidebar-foot {
    margin-top: auto;
    padding-top: 22px;
    border-top: 1px solid rgba(201,162,39,0.12);
    font-size: 12.5px;
    color: var(--c-muted);
    line-height: 1.9;
}
.sidebar-foot strong {
    color: var(--c-text);
    font-size: 14px;
    font-weight: 600;
}
.sidebar-foot i {
    color: var(--c-amber);
    width: 16px;
    margin-right: 4px;
}

/* ===== 移动端导航 ===== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 60px;
    background: rgba(14,12,10,0.98);
    border-bottom: 1px solid rgba(201,162,39,0.18);
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    z-index: 1200;
    backdrop-filter: blur(10px);
}
.mobile-header .navbar-brand {
    color: var(--c-gold-light);
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 0.02em;
    padding: 0;
}
.mobile-header .navbar-toggler {
    border-color: rgba(201,162,39,0.4);
    padding: 4px 10px;
}
.mobile-header .navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(201,162,39,0.2);
}
.mobile-header .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(212,175,55,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0; right: 0; bottom: 0;
    background: rgba(9,7,5,0.98);
    z-index: 1190;
    overflow-y: auto;
    border-bottom: 1px solid rgba(201,162,39,0.2);
}
.mobile-menu-inner {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.mobile-menu-link {
    display: block;
    padding: 18px 14px;
    color: var(--c-text-body);
    font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    border-left: 3px solid transparent;
    transition: var(--transition);
}
.mobile-menu-link:hover,
.mobile-menu-link.active {
    color: var(--c-gold-light);
    background: rgba(201,162,39,0.05);
    border-left-color: var(--c-gold);
    padding-left: 20px;
}
.mobile-menu-link i {
    width: 22px;
    color: var(--c-amber);
    font-size: 13px;
    margin-right: 6px;
    display: inline-block;
}

/* ===== 主内容区 ===== */
.main {
    margin-left: 260px;
    padding-top: 42px;
    position: relative;
}

/* ===== 通用区块 ===== */
.section {
    padding: 90px 60px;
    position: relative;
}
.section + .section { border-top: 1px solid rgba(255,255,255,0.04); }
.section-deep {
    background: var(--c-bg-deep);
}
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid rgba(201,162,39,0.4);
    border-radius: 4px;
    color: var(--c-gold-light);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 18px;
    background: rgba(201,162,39,0.05);
}
.section-label::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--c-gold);
    border-radius: 50%;
}
.section-title {
    color: var(--c-text);
    font-size: clamp(1.75rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.section-desc {
    color: var(--c-muted);
    font-size: 16px;
    max-width: 660px;
    margin-bottom: 40px;
    line-height: 1.85;
}
.section-head { margin-bottom: 36px; }

/* ===== 按钮 ===== */
.btn-gold {
    background: linear-gradient(135deg, var(--c-gold-light) 0%, var(--c-amber) 100%);
    color: #1A1613;
    font-weight: 700;
    border: none;
    border-radius: 8px;
    padding: 13px 30px;
    font-size: 15px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.03em;
}
.btn-gold:hover {
    background: linear-gradient(135deg, #E8C453 0%, #B07F14 100%);
    color: #1A1613;
    transform: scale(1.03);
    box-shadow: 0 10px 28px rgba(201,162,39,0.25);
}
.btn-gold:active { transform: translateY(2px) scale(1.01); }
.btn-gold:focus-visible { outline: 3px solid rgba(212,175,55,0.5); outline-offset: 2px; }
.btn-outline-gold {
    background: transparent;
    border: 1px solid rgba(201,162,39,0.6);
    color: var(--c-gold-light);
    font-weight: 600;
    border-radius: 8px;
    padding: 13px 30px;
    font-size: 15px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.btn-outline-gold:hover {
    background: rgba(201,162,39,0.1);
    border-color: var(--c-gold-light);
    color: var(--c-gold-light);
}
.btn-outline-gold:active { transform: translateY(2px); }
.btn-outline-gold:focus-visible { outline: 3px solid rgba(212,175,55,0.4); outline-offset: 2px; }

/* ===== Hero 首屏 ===== */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    padding: 90px 60px 40px;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(14,12,10,0.94) 0%, rgba(14,12,10,0.78) 45%, rgba(14,12,10,0.5) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 740px;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 16px;
    border: 1px solid rgba(201,162,39,0.45);
    border-radius: 40px;
    color: var(--c-gold-light);
    font-size: 13px;
    letter-spacing: 0.08em;
    margin-bottom: 26px;
    background: rgba(14,12,10,0.45);
    backdrop-filter: blur(6px);
}
.hero-eyebrow i { font-size: 11px; }
.hero h1 {
    color: var(--c-text);
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: 0.02em;
    margin-bottom: 24px;
}
.hero h1 .gold { color: var(--c-gold-light); }
.hero-desc {
    font-size: 17px;
    line-height: 1.88;
    color: var(--c-text-body);
    max-width: 640px;
    margin-bottom: 36px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}
.hero-metrics {
    position: relative;
    z-index: 2;
    margin-top: auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(10,8,6,0.72);
    border-top: 1px solid var(--c-gold);
    border-bottom: 1px solid var(--c-gold);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 16px 40px rgba(0,0,0,0.45);
}
.metric-item {
    padding: 26px 20px;
    text-align: center;
    border-right: 1px solid rgba(201,162,39,0.14);
}
.metric-item:last-child { border-right: none; }
.metric-num {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--c-gold-light);
    line-height: 1.2;
    letter-spacing: 0.02em;
}
.metric-label {
    font-size: 13px;
    color: var(--c-muted);
    margin-top: 6px;
    letter-spacing: 0.06em;
}

/* ===== 平台介绍 ===== */
.story-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 54px;
    align-items: center;
}
.story-img {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-border);
    box-shadow: var(--shadow);
    position: relative;
}
.story-img img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}
.story-img:hover img { transform: scale(1.03); }
.story-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(14,12,10,0.5) 100%);
    pointer-events: none;
}
.story-content .section-title { margin-bottom: 18px; }
.story-content p {
    color: var(--c-text-body);
    font-size: 15.5px;
    line-height: 1.9;
    margin-bottom: 20px;
}
.story-features li {
    padding: 11px 0 11px 30px;
    position: relative;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: var(--c-text-body);
    font-size: 15px;
}
.story-features li::before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--c-gold);
    font-size: 11px;
    top: 14px;
}

/* ===== 服务矩阵 ===== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 34px;
}
.service-card {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: var(--c-border-hover);
}
.service-card-img {
    position: relative;
    overflow: hidden;
    height: 250px;
}
.service-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}
.service-card:hover .service-card-img img { transform: scale(1.04); }
.service-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(14,12,10,0.1) 30%, rgba(14,12,10,0.72) 100%);
}
.service-tag {
    position: absolute;
    top: 16px; left: 16px;
    z-index: 2;
    padding: 5px 14px;
    border: 1px solid rgba(201,162,39,0.65);
    border-radius: 4px;
    color: var(--c-gold-light);
    background: rgba(14,12,10,0.6);
    font-size: 12px;
    letter-spacing: 0.08em;
    backdrop-filter: blur(4px);
}
.service-card-body {
    padding: 28px 30px 30px;
}
.service-card-body h3 {
    color: var(--c-text);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
}
.service-card-body p {
    color: var(--c-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 18px;
}
.service-link {
    color: var(--c-gold-light);
    font-size: 14px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.service-link:hover { color: var(--c-gold); gap: 12px; }
.service-link i { font-size: 12px; }

/* ===== 结果对比 ===== */
.compare-section {
    background-image: linear-gradient(rgba(14,12,10,0.9), rgba(14,12,10,0.95)), url('/assets/images/backpic/back-2.jpg');
    background-size: cover;
    background-position: center;
}
.compare-row {
    display: grid;
    grid-template-columns: 1fr 70px 1fr;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    align-items: stretch;
}
.compare-row:last-child { border-bottom: none; }
.compare-col { padding: 28px 30px; }
.compare-col.old {
    background: rgba(255,255,255,0.02);
    color: var(--c-muted);
}
.compare-col.old h4 { color: var(--c-muted); }
.compare-col.new {
    background: rgba(201,162,39,0.05);
    border: 1px solid rgba(201,162,39,0.28);
    border-radius: 10px;
    margin: 12px 0;
}
.compare-col.new h4 { color: var(--c-gold-light); }
.compare-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-gold);
    font-weight: 800;
    font-size: 13px;
    position: relative;
}
.compare-vs::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(201,162,39,0.4), transparent);
}
.compare-col h4 {
    font-size: 15.5px;
    margin-bottom: 16px;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.compare-col ul li {
    position: relative;
    padding: 7px 0 7px 26px;
    font-size: 14.5px;
    line-height: 1.65;
}
.compare-col ul li::before {
    position: absolute;
    left: 0;
    top: 8px;
    font-size: 14px;
    font-weight: 700;
}
.compare-col.old ul li::before { content: '×'; color: #B0654D; }
.compare-col.new ul li::before { content: '✓'; color: var(--c-gold-light); }

/* ===== 资讯列表 ===== */
.news-layout {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 44px;
    align-items: start;
}
.news-item {
    display: block;
    padding: 26px 28px;
    border-radius: 10px;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.04);
    transition: var(--transition);
    margin-bottom: 18px;
}
.news-item:hover {
    background: rgba(255,255,255,0.028);
    border-color: var(--c-border-hover);
}
.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.news-badge {
    padding: 3px 12px;
    background: rgba(201,162,39,0.12);
    border: 1px solid rgba(201,162,39,0.4);
    color: var(--c-gold-light);
    border-radius: 4px;
    font-size: 12px;
    letter-spacing: 0.05em;
}
.news-date {
    color: var(--c-muted);
    font-size: 13px;
}
.news-title {
    color: var(--c-text);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.45;
}
.news-title a { color: inherit; }
.news-title a:hover { color: var(--c-gold-light); }
.news-excerpt {
    color: var(--c-muted);
    font-size: 14.5px;
    line-height: 1.75;
    margin-bottom: 12px;
}
.news-read-more {
    color: var(--c-gold-light);
    font-size: 13px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.news-item:hover .news-read-more { gap: 10px; }
.news-read-more i { font-size: 11px; }
.news-empty {
    padding: 48px 24px;
    text-align: center;
    color: var(--c-muted);
    background: rgba(255,255,255,0.02);
    border: 1px dashed rgba(255,255,255,0.1);
    border-radius: var(--radius);
    font-size: 15px;
}
.news-sidebar {
    padding: 28px;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(201,162,39,0.14);
    border-radius: var(--radius);
    position: sticky;
    top: 84px;
}
.news-sidebar h4 {
    color: var(--c-text);
    font-size: 16px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(201,162,39,0.22);
    font-weight: 600;
    letter-spacing: 0.04em;
}
.news-sidebar ul li {
    border-bottom: 1px solid rgba(255,255,255,0.035);
}
.news-sidebar ul li:last-child { border-bottom: none; }
.news-sidebar ul a {
    color: var(--c-text-body);
    font-size: 14.5px;
    display: block;
    padding: 11px 4px;
    transition: var(--transition);
}
.news-sidebar ul a:hover {
    color: var(--c-gold-light);
    padding-left: 12px;
}
.news-sidebar ul a i {
    color: var(--c-amber);
    font-size: 11px;
    margin-right: 6px;
    width: 14px;
}

/* ===== 用户口碑 ===== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.review-card {
    background: var(--c-bg);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius);
    padding: 30px;
    transition: var(--transition);
}
.review-card:hover {
    border-color: var(--c-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.review-stars {
    color: var(--c-gold-light);
    margin-bottom: 14px;
    font-size: 13px;
    letter-spacing: 2px;
}
.review-text {
    color: var(--c-text-body);
    font-size: 14.5px;
    line-height: 1.8;
    margin-bottom: 20px;
    min-height: 88px;
}
.review-user {
    display: flex;
    align-items: center;
    gap: 14px;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 16px;
}
.review-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(201,162,39,0.35), rgba(184,134,11,0.2));
    border: 1px solid rgba(201,162,39,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-gold-light);
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}
.review-name {
    color: var(--c-text);
    font-size: 14px;
    font-weight: 600;
}
.review-tag {
    color: var(--c-muted);
    font-size: 12px;
    margin-top: 2px;
}

/* ===== FAQ ===== */
.faq-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.5fr;
    gap: 54px;
    align-items: start;
}
.faq-side .section-title { margin-bottom: 14px; }
.faq-side p {
    color: var(--c-muted);
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 26px;
}
.faq-side-contact {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: rgba(201,162,39,0.05);
    border: 1px solid rgba(201,162,39,0.18);
    border-radius: 10px;
}
.faq-side-contact i {
    width: 40px; height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(201,162,39,0.12);
    border: 1px solid rgba(201,162,39,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-gold-light);
}
.faq-side-contact div { font-size: 13px; color: var(--c-muted); }
.faq-side-contact strong { display: block; color: var(--c-text); font-size: 14.5px; margin-top: 2px; }
.faq-accordion .accordion-item {
    background: var(--c-bg-deep);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 10px !important;
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-accordion .accordion-item:hover {
    border-color: var(--c-border-hover);
}
.faq-accordion .accordion-button {
    background: transparent;
    color: var(--c-text);
    font-size: 16px;
    font-weight: 500;
    padding: 20px 24px;
    box-shadow: none;
    border: none;
    transition: var(--transition);
}
.faq-accordion .accordion-button:not(.collapsed) {
    background: rgba(201,162,39,0.06);
    color: var(--c-gold-light);
    font-weight: 600;
}
.faq-accordion .accordion-button:focus {
    box-shadow: none;
    border-color: rgba(201,162,39,0.4);
}
.faq-accordion .accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23D4AF37'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.faq-accordion .accordion-body {
    color: var(--c-text-body);
    font-size: 15px;
    line-height: 1.85;
    padding: 18px 24px 22px;
    border-top: 1px solid rgba(201,162,39,0.14);
}

/* ===== 转化表单 ===== */
.contact-section {
    background-image: linear-gradient(rgba(14,12,10,0.93), rgba(14,12,10,0.97)), url('/assets/images/backpic/back-3.jpg');
    background-size: cover;
    background-position: center;
}
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 54px;
    align-items: center;
}
.contact-info .section-title { margin-bottom: 14px; }
.contact-info > p {
    color: var(--c-muted);
    font-size: 15px;
    line-height: 1.85;
    margin-bottom: 26px;
}
.contact-info-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    align-items: center;
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-icon {
    width: 44px; height: 44px;
    flex-shrink: 0;
    border-radius: 50%;
    border: 1px solid rgba(201,162,39,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-gold-light);
    font-size: 15px;
    background: rgba(201,162,39,0.05);
}
.contact-info-label {
    color: var(--c-muted);
    font-size: 12.5px;
    letter-spacing: 0.06em;
}
.contact-info-value {
    color: var(--c-text);
    font-size: 15px;
    font-weight: 500;
    margin-top: 2px;
}
.contact-card {
    background: var(--c-bg-deep);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 38px;
    box-shadow: var(--shadow);
}
.contact-card-title {
    color: var(--c-text);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 6px;
}
.contact-card-sub {
    color: var(--c-muted);
    font-size: 14px;
    margin-bottom: 30px;
}
.form-label {
    color: var(--c-text-body);
    font-size: 13.5px;
    font-weight: 500;
    margin-bottom: 4px;
    letter-spacing: 0.03em;
}
.form-control {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255,255,255,0.16);
    border-radius: 0;
    color: var(--c-text);
    padding: 12px 2px;
    font-size: 15px;
    transition: var(--transition);
}
.form-control::placeholder { color: rgba(156,148,138,0.55); }
.form-control:focus {
    background: transparent;
    color: var(--c-text);
    border-bottom-color: var(--c-gold);
    box-shadow: none;
}
.form-control:focus-visible { outline: none; }
.form-select {
    background-color: transparent;
    border: none;
    border-bottom: 1px solid rgba(255,255,255,0.16);
    border-radius: 0;
    color: var(--c-text);
    padding: 12px 2px;
    font-size: 15px;
    transition: var(--transition);
}
.form-select:focus {
    border-bottom-color: var(--c-gold);
    box-shadow: none;
}
.form-select option {
    background: var(--c-bg-deep);
    color: var(--c-text);
}
textarea.form-control { resize: vertical; min-height: 70px; }
.form-success {
    display: none;
    margin-top: 16px;
    padding: 14px 18px;
    background: rgba(201,162,39,0.08);
    border: 1px solid rgba(201,162,39,0.4);
    border-radius: 8px;
    color: var(--c-gold-light);
    font-size: 14px;
    text-align: center;
}
.form-success i { margin-right: 8px; }

/* ===== 页脚 ===== */
.footer {
    padding: 70px 60px 30px;
    background: linear-gradient(180deg, #0E0C0A 0%, #080705 100%);
    border-top: 1px solid var(--c-gold);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 44px;
}
.footer-title {
    color: var(--c-gold-light);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    margin-bottom: 20px;
}
.footer-brand-name {
    color: var(--c-text);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}
.footer-brand-desc {
    color: var(--c-muted);
    font-size: 14px;
    line-height: 1.85;
}
.footer-links li {
    padding: 5px 0;
}
.footer-links a {
    color: var(--c-text-body);
    font-size: 14px;
    display: inline-block;
}
.footer-links a:hover {
    color: var(--c-gold-light);
    padding-left: 6px;
}
.footer-contact p {
    color: var(--c-muted);
    font-size: 14px;
    margin-bottom: 10px;
    line-height: 1.7;
}
.footer-contact strong {
    color: var(--c-text);
    font-weight: 500;
}
.footer-contact i {
    color: var(--c-amber);
    width: 18px;
    margin-right: 6px;
}
.footer-area-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.footer-area-tags span {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 30px;
    color: var(--c-muted);
    font-size: 12.5px;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--c-muted);
    font-size: 13px;
}
.footer-bottom a { color: var(--c-muted); }
.footer-bottom a:hover { color: var(--c-gold-light); }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
    .section { padding: 70px 40px; }
    .hero { padding: 70px 40px 30px; }
    .footer { padding: 60px 40px 30px; }
    .news-layout { grid-template-columns: 1fr; }
    .news-sidebar { position: static; }
}

@media (max-width: 991px) {
    .topbar { display: none; }
    .sidebar { display: none; }
    .mobile-header { display: flex; }
    .main { margin-left: 0; padding-top: 60px; }
    .hero { min-height: auto; padding: 70px 28px 36px; }
    .hero-metrics { grid-template-columns: repeat(2, 1fr); }
    .metric-item:nth-child(2) { border-right: none; }
    .metric-item:nth-child(1),
    .metric-item:nth-child(2) { border-bottom: 1px solid rgba(201,162,39,0.12); }
    .services-grid { grid-template-columns: 1fr; }
    .story-grid { grid-template-columns: 1fr; gap: 30px; }
    .reviews-grid { grid-template-columns: 1fr; gap: 20px; }
    .faq-layout { grid-template-columns: 1fr; gap: 40px; }
    .contact-layout { grid-template-columns: 1fr; gap: 40px; }
    .compare-row { grid-template-columns: 1fr; }
    .compare-vs { display: none; }
    .compare-col.new { margin: 0 0 20px; }
    .compare-row { border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 20px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
    .section { padding: 56px 24px; }
    .hero { padding: 52px 24px 28px; }
    .hero h1 { font-size: 2rem; }
    .hero-desc { font-size: 15.5px; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .footer { padding: 48px 24px 24px; }
    .contact-card { padding: 26px; }
    .review-text { min-height: 0; }
    .story-content p { font-size: 15px; }
    .mobile-menu-inner { padding: 16px; }
}

@media (max-width: 575px) {
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .compare-col { padding: 20px; }
    .metric-num { font-size: 1.6rem; }
    .section-title { font-size: 1.5rem; }
    .hero-eyebrow { font-size: 12px; }
    .service-card-body { padding: 22px; }
    .contact-info-item { align-items: flex-start; }
    .hero-metrics { grid-template-columns: repeat(2, 1fr); }
    .mobile-header .navbar-brand { font-size: 14.5px; }
}

/* roulang page: article */
:root {
            --bg-dark: #0E0C0A;
            --bg-deep: #0A0806;
            --bg-card: #1A1613;
            --bg-card-hover: #221C18;
            --gold: #C9A227;
            --gold-light: #D4AF37;
            --gold-dark: #B8860B;
            --text-light: #F2EDE4;
            --text-body: #D8CFC3;
            --text-muted: #9C948A;
            --border-gold: rgba(201, 162, 39, 0.25);
            --border-gold-strong: rgba(201, 162, 39, 0.6);
            --shadow-card: 0 12px 30px rgba(0, 0, 0, 0.5);
            --shadow-card-hover: 0 18px 44px rgba(0, 0, 0, 0.65);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --font-primary: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all .3s ease;
        }

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

        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-primary);
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text-body);
            background: var(--bg-dark);
            overflow-x: hidden;
        }

        a {
            color: var(--gold-light);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
        }

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

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

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

        .container-fluid-custom {
            max-width: 1440px;
            margin: 0 auto;
            padding-left: 2rem;
            padding-right: 2rem;
        }

        .site-wrapper {
            min-height: 100vh;
            background: var(--bg-dark);
        }

        /* ─── 左侧竖向导航 ─── */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: 280px;
            background: linear-gradient(180deg, #1A1613 0%, #0E0C0A 100%);
            border-right: 1px solid rgba(201, 162, 39, 0.12);
            z-index: 1040;
            display: flex;
            flex-direction: column;
            padding: 0;
        }

        .sidebar-brand {
            padding: 2.5rem 2rem 1.6rem;
            border-bottom: 1px solid rgba(201, 162, 39, 0.12);
        }

        .sidebar-brand a {
            display: block;
            color: var(--text-light);
        }

        .brand-title {
            display: block;
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-light);
            line-height: 1.35;
        }

        .brand-sub {
            display: block;
            font-size: 0.78rem;
            color: var(--gold);
            margin-top: 0.3rem;
            letter-spacing: 0.08em;
            line-height: 1.6;
        }

        .brand-deco {
            display: block;
            margin-top: 0.55rem;
            font-size: 0.65rem;
            letter-spacing: 0.35em;
            color: var(--text-muted);
            text-transform: uppercase;
        }

        .sidebar-nav {
            flex: 1;
            padding: 2rem 0;
            list-style: none;
            margin: 0;
        }

        .sidebar-nav .nav-link {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            padding: 1rem 2rem;
            font-size: 1rem;
            color: var(--text-body);
            border-left: 3px solid transparent;
            background: transparent;
            transition: all .3s ease;
            font-weight: 400;
        }

        .sidebar-nav .nav-link i {
            width: 22px;
            text-align: center;
            color: var(--text-muted);
            transition: color .3s;
        }

        .sidebar-nav .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.04);
            border-left-color: var(--gold);
        }

        .sidebar-nav .nav-link:hover i {
            color: var(--gold-light);
        }

        .sidebar-nav .nav-link.active {
            color: var(--gold);
            border-left-color: var(--gold);
            background: rgba(201, 162, 39, 0.08);
            font-weight: 600;
        }

        .sidebar-nav .nav-link.active i {
            color: var(--gold);
        }

        .sidebar-contact {
            padding: 1.8rem 2rem;
            border-top: 1px solid rgba(201, 162, 39, 0.12);
            font-size: 0.86rem;
        }

        .sidebar-contact p {
            margin-bottom: 0.65rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

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

        /* ─── 内容区 wrapper ─── */
        .content-wrapper {
            margin-left: 280px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg-dark);
        }

        .main-content {
            flex: 1;
            padding: 2.5rem 2rem 4rem;
        }

        .article-container {
            max-width: 980px;
            margin: 0 auto;
            padding: 0 1rem;
        }

        /* ─── 移动端顶部导航 ─── */
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1030;
            align-items: center;
            justify-content: space-between;
            padding: 0.85rem 1.25rem;
            background: #0E0C0A;
            border-bottom: 1px solid rgba(201, 162, 39, 0.2);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
        }

        .mobile-topbar .mobile-brand {
            color: var(--text-light);
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .mobile-topbar .mobile-brand small {
            display: block;
            font-size: 0.7rem;
            color: var(--gold);
            letter-spacing: 0.06em;
        }

        .navbar-toggler-custom {
            background: transparent;
            border: 1px solid rgba(201, 162, 39, 0.5);
            border-radius: 8px;
            color: var(--gold-light);
            width: 44px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all .3s;
        }

        .navbar-toggler-custom:hover {
            background: rgba(201, 162, 39, 0.12);
            border-color: var(--gold);
        }

        .offcanvas-full {
            width: 100% !important;
            max-width: 100% !important;
            background: rgba(10, 8, 6, 0.98);
            backdrop-filter: blur(12px);
        }

        .offcanvas-full .offcanvas-header {
            border-bottom: 1px solid rgba(201, 162, 39, 0.15);
            padding: 1.2rem 1.5rem;
        }

        .offcanvas-full .offcanvas-title {
            color: var(--text-light);
            font-size: 1.25rem;
            font-weight: 800;
        }

        .offcanvas-full .btn-close {
            filter: invert(1) sepia(0.3) brightness(0.9);
            opacity: 0.85;
        }

        .mobile-menu-list {
            list-style: none;
            padding: 2rem 1.5rem 0;
            margin: 0;
        }

        .mobile-menu-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-menu-list a {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.2rem 0.5rem;
            color: var(--text-body);
            font-size: 1.15rem;
            transition: all .3s;
        }

        .mobile-menu-list a:hover {
            color: var(--gold);
            background: rgba(255, 255, 255, 0.02);
        }

        .mobile-menu-list a.active {
            color: var(--gold);
            font-weight: 600;
        }

        .mobile-menu-list a i {
            width: 24px;
            text-align: center;
            color: var(--gold);
        }

        /* ─── 面包屑 ─── */
        .breadcrumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.45rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 2rem;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.62);
            transition: color .3s;
        }

        .breadcrumb-nav a:hover {
            color: #fff;
        }

        .breadcrumb-nav .divider {
            color: var(--text-muted);
        }

        .breadcrumb-nav .current {
            color: var(--gold);
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ─── 文章标题区 ─── */
        .article-header {
            position: relative;
            display: flex;
            gap: 2.5rem;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 1.4rem;
            padding-bottom: 1.6rem;
            border-bottom: 1px solid var(--gold);
        }

        .article-header-content {
            flex: 1;
            min-width: 0;
        }

        .article-title {
            font-size: clamp(1.8rem, 3.4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-light);
            margin-bottom: 1rem;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.4rem;
            font-size: 0.86rem;
            color: var(--text-muted);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-meta i {
            color: var(--gold);
        }

        .article-header-thumb {
            width: 220px;
            max-width: 38%;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(201, 162, 39, 0.3);
            box-shadow: var(--shadow-card);
        }

        .article-header-thumb img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            display: block;
        }

        /* ─── 正文阅读区 ─── */
        .article-body {
            max-width: 780px;
            margin: 0 auto;
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body > p:first-of-type::first-letter {
            font-size: 3.2em;
            float: left;
            line-height: 1;
            margin-right: 10px;
            color: var(--gold);
            font-weight: 700;
        }

        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-light);
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-light);
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            border-left: 3px solid var(--gold);
            padding-left: 14px;
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }

        .article-body p {
            margin-bottom: 1.3rem;
        }

        .article-body a {
            color: var(--gold-light);
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: color .3s;
        }

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

        .article-body blockquote {
            border-left: 4px solid rgba(201, 162, 39, 0.5);
            background: rgba(201, 162, 39, 0.05);
            padding: 1.1rem 1.5rem;
            margin: 1.6rem 0;
            border-radius: 0 8px 8px 0;
            color: var(--text-light);
            font-style: normal;
        }

        .article-body blockquote p {
            margin-bottom: 0.5rem;
        }

        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4rem;
            padding-left: 1.4rem;
        }

        .article-body li {
            margin-bottom: 0.45rem;
        }

        .article-body img {
            border-radius: 8px;
            border: 1px solid rgba(201, 162, 39, 0.25);
            margin: 1.6rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body strong {
            color: var(--text-light);
            font-weight: 600;
        }

        .article-body hr {
            border: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--gold), transparent);
            margin: 2.4rem 0;
        }

        .article-body code {
            background: rgba(0, 0, 0, 0.5);
            padding: 0.2em 0.5em;
            border-radius: 4px;
            font-size: 0.92em;
            color: #e8c678;
        }

        /* ─── 内容未找到 ─── */
        .not-found {
            text-align: center;
            padding: 5rem 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            margin: 1rem 0 2rem;
        }

        .not-found h2 {
            font-size: 1.8rem;
            color: var(--text-light);
            margin-bottom: 0.8rem;
        }

        .not-found p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        /* ─── 相关推荐 ─── */
        .related-section {
            max-width: 780px;
            margin: 3.5rem auto 1rem;
            padding-top: 2.2rem;
            border-top: 1px solid rgba(201, 162, 39, 0.18);
        }

        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 1.6rem;
            letter-spacing: 0.04em;
            position: relative;
            padding-left: 16px;
        }

        .related-section .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            background: var(--gold);
            border-radius: 2px;
        }

        .related-card {
            display: block;
            background: var(--bg-card);
            border: 1px solid rgba(201, 162, 39, 0.18);
            border-radius: var(--radius-md);
            padding: 1.4rem 1.5rem;
            margin-bottom: 1rem;
            transition: all .35s ease;
            text-decoration: none;
        }

        .related-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-gold-strong);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .related-meta {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            margin-bottom: 0.7rem;
        }

        .badge-tag {
            display: inline-block;
            padding: 0.22rem 0.85rem;
            font-size: 0.75rem;
            letter-spacing: 0.06em;
            color: var(--gold-light);
            border: 1px solid rgba(201, 162, 39, 0.5);
            border-radius: 100px;
            background: transparent;
            font-weight: 500;
        }

        .related-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .related-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 0.45rem;
            line-height: 1.5;
            transition: color .3s;
        }

        .related-card:hover .related-title {
            color: var(--gold-light);
        }

        .related-summary {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0.8rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-more {
            font-size: 0.85rem;
            color: var(--gold);
            font-weight: 500;
        }

        .related-more i {
            transition: transform .3s;
        }

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

        /* ─── 返回首页按钮 ─── */
        .back-home {
            max-width: 780px;
            margin: 2.4rem auto 0;
            text-align: center;
        }

        /* ─── 按钮 ─── */
        .btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: #1A1507;
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            border: 1px solid var(--gold);
            border-radius: 50px;
            text-decoration: none;
            transition: all .3s ease;
            cursor: pointer;
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, var(--gold-dark), var(--gold));
            border-color: var(--gold-dark);
            color: #1A1507;
            transform: scale(1.02);
            box-shadow: 0 6px 18px rgba(201, 162, 39, 0.25);
        }

        .btn-gold:active {
            transform: translateY(2px) scale(1);
            box-shadow: 0 2px 6px rgba(201, 162, 39, 0.2);
        }

        .btn-gold:focus-visible {
            outline: 3px solid rgba(201, 162, 39, 0.4);
            outline-offset: 2px;
        }

        .btn-outline-gold {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--gold-light);
            background: transparent;
            border: 1px solid rgba(201, 162, 39, 0.5);
            border-radius: 50px;
            text-decoration: none;
            transition: all .3s ease;
            cursor: pointer;
        }

        .btn-outline-gold:hover {
            color: var(--text-light);
            border-color: var(--gold);
            background: rgba(201, 162, 39, 0.08);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
        }

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

        .btn-outline-gold:focus-visible {
            outline: 3px solid rgba(201, 162, 39, 0.35);
            outline-offset: 2px;
        }

        /* ─── 页脚 ─── */
        .footer {
            background: #0A0806;
            border-top: 1px solid var(--gold);
            padding: 4rem 2rem 2rem;
            margin-top: auto;
        }

        .footer .container-fluid {
            max-width: 1440px;
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .footer-brand-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 0.8rem;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 300px;
        }

        .footer-title {
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 1.2rem;
            padding-bottom: 0.6rem;
            border-bottom: 1px solid rgba(201, 162, 39, 0.15);
        }

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

        .footer-links li {
            margin-bottom: 0.55rem;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: all .3s;
        }

        .footer-links a:hover {
            color: var(--gold-light);
            padding-left: 5px;
        }

        .footer-contact p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.55rem;
        }

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

        .footer-contact strong {
            color: var(--text-light);
        }

        .footer-area-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .footer-area-tags span {
            display: inline-block;
            padding: 0.3rem 0.9rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 100px;
            transition: all .3s;
        }

        .footer-area-tags span:hover {
            color: var(--gold-light);
            border-color: var(--border-gold);
            background: rgba(201, 162, 39, 0.05);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.8rem;
            color: var(--text-muted);
            gap: 0.8rem;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color .3s;
        }

        .footer-bottom a:hover {
            color: var(--gold-light);
        }

        /* ─── 响应式断点 ─── */
        @media (max-width: 991px) {
            .sidebar {
                display: none;
            }

            .content-wrapper {
                margin-left: 0;
            }

            .mobile-topbar {
                display: flex;
            }

            .main-content {
                padding: 1.6rem 1rem 3rem;
            }

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

        @media (max-width: 767px) {
            .article-header {
                flex-direction: column-reverse;
                align-items: flex-start;
                gap: 1.2rem;
            }

            .article-header-thumb {
                max-width: 100%;
                width: 100%;
            }

            .article-header-thumb img {
                height: 180px;
            }

            .article-title {
                font-size: 1.65rem;
            }

            .article-body {
                font-size: 16px;
            }
        }

        @media (max-width: 576px) {
            .main-content {
                padding: 1.2rem 0.8rem 2.5rem;
            }

            .article-container {
                padding: 0;
            }

            .breadcrumb-nav {
                font-size: 0.78rem;
                margin-bottom: 1.4rem;
            }

            .article-title {
                font-size: 1.45rem;
            }

            .article-meta {
                gap: 0.8rem;
                font-size: 0.8rem;
            }

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

            .footer {
                padding: 3rem 1.2rem 1.5rem;
            }

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

            .related-card {
                padding: 1.1rem 1.1rem;
            }
        }