/* roulang page: index */
:root {
    --bg-primary: #0D1420;
    --bg-secondary: #111C2E;
    --bg-deep: #0A0F18;
    --accent-blue: #1F9FFF;
    --accent-cyan: #0BCCF0;
    --accent-gold: #E6B45A;
    --success: #2FDD8B;
    --warning: #FF5470;
    --text-primary: #F2F7FF;
    --text-secondary: #9FB0C7;
    --text-muted: #6C7C91;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --glass-hover-bg: rgba(255,255,255,0.10);
    --glass-hover-border: rgba(255,255,255,0.22);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 16px 46px rgba(0,0,0,0.30);
    --shadow-glow: 0 8px 30px rgba(31,159,255,0.35);
    --shadow-glow-strong: 0 10px 42px rgba(31,159,255,0.48);
    --font-stack: -apple-system, "BlinkMacSystemFont", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --header-height: 72px;
    --container-max: 1200px;
    --sp-1: 8px;
    --sp-2: 16px;
    --sp-3: 24px;
    --sp-4: 32px;
    --sp-5: 48px;
    --sp-6: 64px;
    --sp-7: 96px;
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    font-family: var(--font-stack);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
}
a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color .2s ease;
}
button {
    font-family: var(--font-stack);
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}
svg {
    display: block;
}
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--sp-3);
}
.section {
    padding: var(--sp-7) 0;
}
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: var(--sp-5);
    gap: var(--sp-3);
    flex-wrap: wrap;
}
.section-title {
    font-size: clamp(1.5rem, 2.5vw, 2.125rem);
    font-weight: 800;
    line-height: 1.3;
    position: relative;
    padding-left: 16px;
}
.section-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 4px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
    box-shadow: 0 0 12px rgba(31,159,255,0.4);
}
.section-link {
    font-size: 14px;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--glass-border);
    border-radius: 48px;
    background: var(--glass-bg);
    transition: all .3s ease;
}
.section-link:hover {
    color: var(--text-primary);
    border-color: var(--glass-hover-border);
    background: var(--glass-hover-bg);
    box-shadow: 0 0 24px rgba(31,159,255,0.12);
}
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .7s ease, transform .7s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* -------- 按钮 -------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    border-radius: 48px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    box-shadow: var(--shadow-glow);
    transition: all .3s ease;
    white-space: nowrap;
    line-height: 1.4;
}
.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: var(--shadow-glow-strong);
    color: #fff;
    transform: translateY(-1px);
}
.btn-primary:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 3px;
}
.btn-primary:active {
    transform: scale(0.98);
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.16);
    color: var(--text-primary);
    border-radius: 48px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    backdrop-filter: blur(14px);
    transition: all .3s ease;
    white-space: nowrap;
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.3);
    box-shadow: 0 0 24px rgba(31,159,255,0.12);
    color: var(--text-primary);
}
.btn-ghost:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 3px;
}
.btn-ghost:active {
    transform: scale(0.98);
}
.btn-lg {
    padding: 14px 36px;
    font-size: 15px;
    min-width: 160px;
    height: 52px;
}

/* -------- 顶部导航 -------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(13,20,32,0.78);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: all .3s ease;
}
.site-header.scrolled {
    background: rgba(13,20,32,0.94);
    border-bottom-color: rgba(255,255,255,0.08);
    box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--sp-3);
    gap: var(--sp-3);
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    text-decoration: none;
}
.logo-mark {
    font-size: 28px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--accent-gold), #f5d088);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}
.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 1px;
    line-height: 1.2;
}
.logo:hover .logo-mark {
    filter: brightness(1.15);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    flex: 1;
    justify-content: center;
}
.nav-link {
    display: inline-block;
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    transition: color .2s ease;
    border-radius: 6px;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 4px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    transform: scaleX(0);
    transition: transform .3s ease;
}
.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}
.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}
.nav-cta {
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    transition: all .3s ease;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all .3s ease;
}
.nav-toggle:hover {
    background: rgba(255,255,255,0.12);
}
.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(13,20,32,0.98);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--sp-3);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
}
.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}
.mobile-menu-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: var(--sp-3);
}
.mobile-menu-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: background .2s ease;
}
.mobile-menu-links a:hover {
    background: var(--glass-bg);
}
.mobile-menu-links a.active {
    background: rgba(31,159,255,0.1);
    color: var(--accent-blue);
}
.mobile-menu-cta {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    padding-top: var(--sp-2);
    border-top: 1px solid var(--glass-border);
}
.mobile-menu-cta .btn-primary {
    width: 100%;
    height: 48px;
}

/* -------- Hero 首屏 -------- */
.hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    background: var(--bg-deep);
    overflow: hidden;
    padding-top: var(--header-height);
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,15,24,0.94) 0%, rgba(13,20,32,0.82) 40%, rgba(17,28,46,0.6) 100%);
    z-index: 1;
}
.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    right: -10%;
    top: 10%;
    background: radial-gradient(circle, rgba(31,159,255,0.15), transparent 60%);
    z-index: 1;
    pointer-events: none;
}
.hero-glow-gold {
    position: absolute;
    width: 300px;
    height: 300px;
    left: 6%;
    bottom: 8%;
    background: radial-gradient(circle, rgba(230,180,90,0.12), transparent 60%);
    z-index: 1;
    pointer-events: none;
}
.hero-watermark {
    position: absolute;
    right: 5%;
    bottom: 6%;
    font-size: 320px;
    font-weight: 900;
    color: rgba(31,159,255,0.05);
    pointer-events: none;
    line-height: 1;
    z-index: 1;
    font-variant-numeric: tabular-nums;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--sp-6) var(--sp-3);
    width: 100%;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(230,180,90,0.18), rgba(230,180,90,0.08));
    border: 1px solid rgba(230,180,90,0.3);
    color: var(--accent-gold);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 48px;
    letter-spacing: 0.05em;
    margin-bottom: var(--sp-3);
    backdrop-filter: blur(10px);
}
.hero-title {
    font-size: clamp(2.25rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: var(--sp-3);
    letter-spacing: -0.5px;
}
.hero-title .j9-brand {
    background: linear-gradient(135deg, var(--accent-gold), #f5d088);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: var(--sp-4);
    max-width: 520px;
    line-height: 1.6;
}
.hero-actions {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
    margin-bottom: var(--sp-5);
}
.hero-stats {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
}
.stat-item {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    padding: 16px 28px;
    min-width: 130px;
    text-align: center;
    transition: all .3s ease;
}
.stat-item:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.16);
}
.stat-num {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    display: block;
}
.stat-num .gold {
    color: var(--accent-gold);
}
.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: block;
}
.hero-scroll {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    animation: floatY 2s ease-in-out infinite;
}
.hero-scroll::before {
    content: "";
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    margin-top: -6px;
}
@keyframes floatY {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* -------- 标志性条幅 -------- */
.banner-strip {
    position: relative;
    z-index: 3;
    padding: 20px 0;
    margin-top: -20px;
}
.banner-inner {
    background: linear-gradient(135deg, rgba(31,159,255,0.12), rgba(11,204,240,0.06));
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    padding: 20px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-3);
    flex-wrap: wrap;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.banner-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    min-width: 240px;
}
.banner-text span {
    color: var(--accent-gold);
}

/* -------- 爆款网格 2+4 -------- */
.featured-grid-section {
    padding: var(--sp-6) 0;
}
.featured-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--sp-3);
}
.feature-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(18px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all .3s ease;
    text-decoration: none;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
}
.feature-card:hover {
    background: var(--glass-hover-bg);
    border-color: var(--glass-hover-border);
    box-shadow: 0 0 32px rgba(31,159,255,0.16);
    transform: translateY(-6px);
    color: var(--text-primary);
}
.feature-card.large {
    grid-column: span 3;
    grid-row: span 2;
}
.feature-card.small {
    grid-column: span 2;
    grid-row: span 1;
}
.feature-card .card-cover {
    position: relative;
    overflow: hidden;
}
.feature-card.large .card-cover {
    height: 220px;
}
.feature-card.small .card-cover {
    height: 140px;
}
.feature-card .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.feature-card:hover .card-cover img {
    transform: scale(1.03);
}
.feature-card .card-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(10,15,24,0.55) 100%);
}
.card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 48px;
    letter-spacing: 0.03em;
    box-shadow: 0 4px 16px rgba(31,159,255,0.3);
}
.card-content {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.card-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.4;
}
.feature-card.large .card-title {
    font-size: 20px;
}
.card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}
.card-link {
    font-size: 13px;
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap .2s ease;
}
.feature-card:hover .card-link {
    gap: 8px;
}
.feature-card .card-link::after {
    content: "→";
}

/* -------- 最新资讯 / CMS -------- */
.news-section {
    background: var(--bg-secondary);
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
}
.news-card {
    display: flex;
    gap: var(--sp-2);
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    text-decoration: none;
    color: inherit;
    transition: all .3s ease;
}
.news-card:hover {
    background: var(--glass-hover-bg);
    border-color: var(--glass-hover-border);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    color: inherit;
}
.news-thumb {
    flex: 0 0 40%;
    min-width: 0;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(31,159,255,0.15), rgba(11,204,240,0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 90px;
    overflow: hidden;
}
.news-thumb .thumb-icon {
    font-size: 32px;
    opacity: 0.6;
}
.news-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.news-title {
    font-size: 16px;
    font-weight: 650;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}
.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
}
.news-cat {
    background: rgba(31,159,255,0.12);
    color: var(--accent-blue);
    font-size: 12px;
    padding: 2px 10px;
    border-radius: 48px;
    font-weight: 500;
}
.news-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    background: var(--glass-bg);
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    gap: 12px;
}
.news-empty .empty-icon {
    font-size: 48px;
    opacity: 0.4;
    line-height: 1;
}

/* -------- 评价轮播 -------- */
.testimonials-section {
    overflow: hidden;
}
.testimonial-wrap {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
}
.testimonial-viewport {
    overflow: hidden;
    padding: 16px 4px;
}
.testimonial-track {
    display: flex;
    gap: 20px;
    transition: transform .5s ease;
    will-change: transform;
}
.testimonial-card {
    flex: 0 0 calc((100% - 40px) / 3);
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all .4s ease;
    opacity: 0.75;
    transform: scale(0.95);
}
.testimonial-card.active {
    opacity: 1;
    transform: scale(1);
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 32px rgba(31,159,255,0.1);
}
.testimonial-stars {
    color: var(--accent-gold);
    font-size: 18px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.testimonial-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    min-height: 80px;
}
.testimonial-user {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
}
.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.testimonial-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.testimonial-location {
    font-size: 12px;
    color: var(--text-muted);
}
.testimonial-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
}
.testimonial-prev,
.testimonial-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 18px;
    transition: all .3s ease;
}
.testimonial-prev:hover,
.testimonial-next:hover {
    background: rgba(31,159,255,0.15);
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(31,159,255,0.2);
}
.testimonial-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}
.testimonial-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 8px;
    background: rgba(255,255,255,0.2);
    transition: all .3s ease;
}
.testimonial-dots .dot.active {
    width: 24px;
    background: var(--accent-blue);
    box-shadow: 0 0 8px rgba(31,159,255,0.3);
}

/* -------- 服务保障条 -------- */
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-3);
}
.trust-item {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: all .3s ease;
    text-align: center;
}
.trust-item:hover {
    background: var(--glass-hover-bg);
    border-color: var(--glass-hover-border);
    transform: translateY(-4px);
}
.trust-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(31,159,255,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    margin: 0 auto 14px;
}
.trust-icon svg {
    width: 22px;
    height: 22px;
}
.trust-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.trust-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* -------- CTA 区块 -------- */
.cta-section {
    position: relative;
    text-align: center;
    padding: var(--sp-6) 0;
    background: radial-gradient(ellipse at 30% 40%, rgba(31,159,255,0.12), transparent 60%),
        radial-gradient(ellipse at 70% 60%, rgba(11,204,240,0.08), transparent 50%),
        var(--bg-deep);
    overflow: hidden;
}
.cta-watermark {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 400px;
    font-weight: 900;
    color: rgba(255,255,255,0.03);
    pointer-events: none;
    line-height: 1;
    z-index: 0;
}
.cta-inner {
    position: relative;
    z-index: 1;
    max-width: 640px;
    margin: 0 auto;
}
.cta-title {
    font-size: clamp(1.6rem, 3vw, 2.25rem);
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: var(--sp-3);
}
.cta-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--sp-4);
}
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    border-radius: 48px;
    padding: 16px 44px;
    min-width: 200px;
    height: 56px;
    box-shadow: var(--shadow-glow);
    transition: all .3s ease;
    border: none;
    text-decoration: none;
}
.cta-button:hover {
    filter: brightness(1.12);
    box-shadow: var(--shadow-glow-strong);
    color: #fff;
    transform: translateY(-2px);
}
.cta-button:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 3px;
}
.cta-button:active {
    transform: scale(0.97);
}

/* -------- FAQ -------- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--sp-2);
    overflow: hidden;
    transition: all .3s ease;
}
.faq-item.active {
    background: rgba(255,255,255,0.09);
    border-color: rgba(31,159,255,0.25);
    box-shadow: 0 0 24px rgba(31,159,255,0.08);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-2);
    padding: 18px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    min-height: 56px;
    user-select: none;
    transition: color .2s ease;
}
.faq-question:hover {
    color: var(--accent-cyan);
}
.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all .3s ease;
    color: var(--text-secondary);
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: rgba(31,159,255,0.15);
    color: var(--accent-blue);
}
.faq-answer {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .4s ease, opacity .3s ease;
}
.faq-item.active .faq-answer {
    max-height: 300px;
    opacity: 1;
}
.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* -------- 页脚 -------- */
.site-footer {
    background: var(--bg-deep);
    padding: var(--sp-6) 0 0;
    border-top: 1px solid rgba(255,255,255,0.04);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: var(--sp-5);
    padding-bottom: var(--sp-5);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--sp-2);
}
.footer-logo .logo-mark {
    font-size: 24px;
}
.footer-logo .logo-text {
    font-size: 16px;
}
.footer-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 280px;
}
.footer-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--sp-2);
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.footer-links a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color .2s ease;
}
.footer-links a:hover {
    color: var(--accent-cyan);
}
.footer-contact {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.8;
}
.footer-contact a {
    color: var(--accent-blue);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: var(--sp-2) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-2);
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-muted);
}

/* -------- 响应式 -------- */
@media (max-width: 1024px) {
    .feature-card.large {
        grid-column: span 3;
    }
    .feature-card.small {
        grid-column: span 3;
    }
    .feature-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonial-card {
        flex: 0 0 calc((100% - 20px) / 2);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-4);
    }
}
@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .hero {
        min-height: 92vh;
    }
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost {
        width: 100%;
    }
    .hero-stats {
        flex-direction: column;
        align-items: stretch;
        gap: var(--sp-2);
    }
    .stat-item {
        min-width: 0;
    }
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-card.large,
    .feature-card.small {
        grid-column: span 2;
    }
    .feature-card.large .card-cover {
        height: 180px;
    }
    .feature-card.small .card-cover {
        height: 130px;
    }
    .news-card {
        flex-direction: column;
    }
    .news-thumb {
        flex-basis: auto;
        height: 120px;
    }
    .testimonial-card {
        flex: 0 0 86%;
    }
    .testimonial-viewport {
        padding: 12px 0;
    }
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--sp-4);
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .section {
        padding: var(--sp-5) 0;
    }
    .banner-strip {
        margin-top: 0;
    }
    .banner-inner {
        flex-direction: column;
        align-items: flex-start;
    }
    .banner-inner .btn-primary {
        width: 100%;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 var(--sp-2);
    }
    .featured-grid {
        grid-template-columns: 1fr;
    }
    .feature-card.large,
    .feature-card.small {
        grid-column: span 1;
    }
    .hero-title {
        font-size: 1.9rem;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .btn-lg {
        width: 100%;
        min-width: 0;
    }
    .trust-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-2);
    }
    .trust-desc {
        white-space: normal;
    }
    .footer-bottom {
        font-size: 11px;
    }
    .testimonial-card {
        flex: 0 0 90%;
    }
    .section-title {
        padding-left: 12px;
        font-size: 1.35rem;
    }
    .news-title {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
    }
}

/* roulang page: category1 */
:root{
  --bg:#0D1420;
  --bg2:#111C2E;
  --bg3:#0A0F18;
  --primary:#1F9FFF;
  --primary2:#0BCCF0;
  --gold:#E6B45A;
  --success:#2FDD8B;
  --danger:#FF5470;
  --text:#F2F7FF;
  --text2:#9FB0C7;
  --text3:#6C7C91;
  --border:rgba(255,255,255,0.10);
  --card-bg:rgba(255,255,255,0.06);
  --card-bg-hover:rgba(255,255,255,0.10);
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-card:0 16px 46px rgba(0,0,0,0.30);
  --shadow-btn:0 8px 30px rgba(31,159,255,0.35);
  --shadow-btn-hover:0 10px 42px rgba(31,159,255,0.48);
  --font:-apple-system,"BlinkMacSystemFont","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --sp:8px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:15px;min-height:100vh;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
ul,ol{list-style:none}
input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:768px){.container{padding:0 16px}}
h1,h2,h3,h4{line-height:1.3;font-weight:700}

/* 按钮 */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  color:#fff;font-size:15px;font-weight:600;border-radius:48px;
  padding:12px 28px;min-height:44px;box-shadow:var(--shadow-btn);
  transition:filter .25s,box-shadow .25s,transform .2s;white-space:nowrap;
  border:1px solid rgba(255,255,255,0.12);
}
.btn-primary:hover{filter:brightness(1.1);box-shadow:var(--shadow-btn-hover)}
.btn-primary:active{transform:scale(0.98)}
.btn-primary:focus-visible{outline:2px solid var(--primary2);outline-offset:3px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:rgba(255,255,255,0.06);backdrop-filter:blur(18px);
  color:#fff;font-size:15px;font-weight:600;border-radius:48px;
  padding:12px 28px;min-height:44px;border:1px solid rgba(255,255,255,0.18);
  transition:background .25s,border-color .25s,transform .2s;white-space:nowrap;
}
.btn-ghost:hover{background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.28)}
.btn-ghost:active{transform:scale(0.98)}
.btn-ghost:focus-visible{outline:2px solid var(--primary2);outline-offset:3px}
.btn-lg{min-height:56px;padding:16px 44px;font-size:16px}
.btn-block{width:100%}

/* Header */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;background:rgba(13,20,30,0.78);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,0.04);
  transition:border-color .3s,background .3s;
}
.site-header.scrolled{border-bottom-color:rgba(31,159,255,0.18)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:flex;align-items:center;gap:4px;flex-shrink:0;position:relative;overflow:hidden;border-radius:12px;padding:4px 8px}
.logo-mark{
  font-size:28px;font-weight:900;letter-spacing:-1px;
  background:linear-gradient(135deg,var(--gold),#FFF3D6);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;line-height:1;
}
.logo-text{font-size:17px;font-weight:800;color:#fff;letter-spacing:1px;line-height:1}
.logo::after{
  content:"";position:absolute;top:0;left:-80%;width:50%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,0.10),transparent);
  transform:skewX(-20deg);animation:logo-sweep 3.8s ease-in-out infinite;
}
@keyframes logo-sweep{0%,60%{left:-80%}100%{left:130%}}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text2);
  padding:8px 2px;transition:color .25s;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--primary2));
  border-radius:3px;transition:right .3s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{right:0}
.nav-link.active{color:#fff}
.nav-link.active::after{right:0}
.nav-cta{flex-shrink:0;padding:10px 28px;min-height:40px;font-size:14px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:12px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08)}
.nav-toggle span{width:22px;height:2px;background:#fff;border-radius:2px;transition:transform .3s,opacity .3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:900px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
}
.mobile-menu{
  position:fixed;top:0;right:0;bottom:0;left:0;z-index:999;
  background:rgba(10,15,24,0.98);backdrop-filter:blur(24px);
  display:flex;flex-direction:column;padding:100px 32px 120px;gap:8px;
  transform:translateX(100%);transition:transform .35s cubic-bezier(.22,1,.36,1);
  overflow-y:auto;
}
.mobile-menu.open{transform:translateX(0)}
.mobile-menu .mobile-nav-link{
  display:flex;align-items:center;justify-content:space-between;
  font-size:20px;font-weight:700;color:#fff;padding:16px 8px;
  border-bottom:1px solid rgba(255,255,255,0.06);
}
.mobile-menu .mobile-nav-link span{font-size:14px;color:var(--text3)}
.mobile-menu .mobile-nav-link.active{color:var(--primary2)}
.mobile-menu-bottom{
  position:absolute;bottom:0;left:0;right:0;padding:24px 32px calc(24px + env(safe-area-inset-bottom));
  background:rgba(10,15,24,0.95);border-top:1px solid rgba(255,255,255,0.06);
}
.mobile-menu-bottom .btn-primary{width:100%}
.mobile-menu-close{
  position:absolute;top:16px;right:20px;width:48px;height:48px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;
  background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);
}

/* Page Banner */
.page-banner{
  position:relative;min-height:280px;padding:140px 0 56px;
  background:linear-gradient(135deg,var(--bg3),var(--bg2));
  overflow:hidden;display:flex;align-items:center;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:0.35;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,20,30,0.92) 0%,rgba(13,20,30,0.72) 55%,rgba(17,28,46,0.45) 100%);
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text3);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text2);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text3);font-size:16px}
.breadcrumb .current{color:var(--text3)}
.page-banner h1{
  font-size:clamp(32px,4vw,44px);font-weight:900;color:#fff;
  letter-spacing:0.02em;margin-bottom:14px;
}
.page-banner .banner-sub{font-size:16px;color:var(--text2);max-width:620px;line-height:1.8}
.banner-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(230,180,90,0.12);
  border:1px solid rgba(230,180,90,0.30);color:var(--gold);
  padding:5px 14px;border-radius:48px;font-size:12px;font-weight:600;
  letter-spacing:0.05em;margin-bottom:20px;
}
.banner-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px rgba(230,180,90,0.6)}
.banner-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap}

/* Section 通用 */
.section{padding:80px 0;position:relative}
.section-head{margin-bottom:44px;max-width:720px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:var(--primary);letter-spacing:0.08em;text-transform:uppercase;margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:24px;height:2px;background:linear-gradient(90deg,var(--primary),var(--primary2))}
.section-head h2{font-size:clamp(24px,2.5vw,34px);font-weight:800;color:#fff;letter-spacing:-0.01em}
.section-head p{font-size:15px;color:var(--text2);margin-top:12px;line-height:1.8}
.text-center .section-head{margin-left:auto;margin-right:auto;text-align:center}
.text-center .section-head .eyebrow{justify-content:center}
.text-center .section-head .eyebrow::before{display:none}
@media(max-width:768px){.section{padding:52px 0}}

/* 介绍区块 */
.intro-panel{display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center;background:linear-gradient(180deg,rgba(17,28,46,0.6),rgba(10,15,24,0.4));border-radius:32px;padding:48px;border:1px solid rgba(255,255,255,0.06)}
.intro-text .section-badge{
  display:inline-flex;align-items:center;gap:8px;background:rgba(31,159,255,0.10);
  border:1px solid rgba(31,159,255,0.24);color:var(--primary);
  padding:5px 14px;border-radius:48px;font-size:12px;font-weight:600;
  letter-spacing:0.05em;margin-bottom:18px;
}
.intro-text h2{font-size:clamp(24px,2.5vw,32px);font-weight:800;color:#fff;line-height:1.35;margin-bottom:16px}
.intro-text p{color:var(--text2);font-size:15px;line-height:1.9;margin-bottom:16px}
.intro-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.intro-list li{display:flex;align-items:flex-start;gap:12px;color:var(--text);font-size:14px;line-height:1.7}
.intro-list li .check-icon{width:22px;height:22px;border-radius:50%;background:rgba(47,221,139,0.12);border:1px solid rgba(47,221,139,0.3);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--success);font-size:11px;margin-top:2px}
.intro-visual{position:relative;border-radius:24px;overflow:hidden;box-shadow:var(--shadow-card)}
.intro-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .5s ease}
.intro-visual:hover img{transform:scale(1.03)}
.intro-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,transparent 55%,rgba(13,20,30,0.5))}
@media(max-width:900px){.intro-panel{grid-template-columns:1fr;padding:28px;gap:32px}}

/* 服务内容卡片 */
.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.content-card{
  background:var(--card-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:transform .3s,box-shadow .3s,background .3s,border-color .3s;
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;
}
.content-card:hover{transform:translateY(-6px);background:var(--card-bg-hover);border-color:rgba(255,255,255,0.22);box-shadow:0 20px 52px rgba(0,0,0,0.35),0 0 32px rgba(31,159,255,0.16)}
.content-card .card-img{position:relative;overflow:hidden;aspect-ratio:16/10}
.content-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.content-card:hover .card-img img{transform:scale(1.04)}
.content-card .card-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(13,20,30,0.55))}
.card-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(230,180,90,0.15);border:1px solid rgba(230,180,90,0.3);
  color:var(--gold);font-size:11px;font-weight:600;letter-spacing:0.03em;
  padding:4px 12px;border-radius:48px;backdrop-filter:blur(8px);
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:17px;font-weight:700;color:#fff;margin-bottom:8px}
.card-body p{font-size:14px;color:var(--text2);line-height:1.75;flex:1}
.card-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600;margin-top:14px;transition:gap .3s,color .2s}
.card-link:hover{color:var(--primary2);gap:10px}

@media(max-width:768px){
  .content-grid{grid-template-columns:1fr}
  .content-card .card-img{aspect-ratio:16/9}
}

/* 流程 */
.process-panel{
  padding:56px 0;position:relative;overflow:hidden;
}
.process-panel::before{
  content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,159,255,0.06),transparent 65%);
  pointer-events:none;
}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-step{
  background:var(--card-bg);backdrop-filter:blur(18px);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;text-align:center;position:relative;
  transition:transform .3s,border-color .3s,box-shadow .3s;
}
.process-step:hover{transform:translateY(-4px);border-color:rgba(31,159,255,0.35);box-shadow:0 12px 36px rgba(0,0,0,0.3),0 0 24px rgba(31,159,255,0.08)}
.step-num{
  font-size:38px;font-weight:900;line-height:1;color:transparent;
  background:linear-gradient(135deg,var(--gold),#FFF3D6);
  -webkit-background-clip:text;background-clip:text;
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.process-step h3{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.process-step p{font-size:13px;color:var(--text2);line-height:1.7}
.step-arrow{position:absolute;top:50%;right:-18px;transform:translateY(-50%);z-index:2;color:var(--primary);font-size:22px;opacity:0.6}
@media(max-width:900px){
  .process-grid{grid-template-columns:1fr 1fr}
  .step-arrow{display:none}
}
@media(max-width:520px){.process-grid{grid-template-columns:1fr}}

/* 场景区块 */
.scene-panel{background:linear-gradient(180deg,rgba(17,28,46,0.5),rgba(13,20,30,0.8));border-radius:32px;padding:48px;border:1px solid rgba(255,255,255,0.06)}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.scene-card{
  position:relative;border-radius:24px;overflow:hidden;min-height:220px;
  display:flex;align-items:flex-end;box-shadow:var(--shadow-card);
  border:1px solid rgba(255,255,255,0.08);
}
.scene-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.scene-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(13,20,30,0.85));z-index:1}
.scene-info{position:relative;z-index:2;padding:24px}
.scene-info h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.scene-info p{font-size:13px;color:var(--text2);line-height:1.7}
.scene-tag{
  display:inline-block;background:rgba(31,159,255,0.18);border:1px solid rgba(31,159,255,0.3);
  color:var(--primary2);font-size:11px;font-weight:600;padding:3px 10px;border-radius:48px;margin-bottom:10px;
}
@media(max-width:768px){
  .scene-panel{padding:24px}
  .scene-grid{grid-template-columns:1fr}
}

/* 保障条 */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{
  background:var(--card-bg);backdrop-filter:blur(18px);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:24px 20px;display:flex;flex-direction:column;align-items:center;text-align:center;
  min-height:120px;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.trust-item:hover{transform:translateY(-4px);border-color:rgba(47,221,139,0.35);box-shadow:0 12px 32px rgba(0,0,0,0.25)}
.trust-icon{width:44px;height:44px;border-radius:14px;background:rgba(31,159,255,0.12);border:1px solid rgba(31,159,255,0.2);display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--primary)}
.trust-item h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:4px}
.trust-item p{font-size:12px;color:var(--text2);line-height:1.6}
@media(max-width:900px){.trust-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.trust-grid{grid-template-columns:1fr}}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--card-bg);backdrop-filter:blur(18px);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  margin-bottom:12px;overflow:hidden;transition:border-color .3s,box-shadow .3s;
}
.faq-item.open{border-color:rgba(31,159,255,0.35);box-shadow:0 0 24px rgba(31,159,255,0.06)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:18px 24px;font-size:15px;font-weight:600;color:#fff;text-align:left;
  gap:16px;cursor:pointer;min-height:56px;transition:background .3s;
}
.faq-question:hover{background:rgba(255,255,255,0.03)}
.faq-icon{
  width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--primary);transition:transform .3s,background .3s;flex-shrink:0;
  font-weight:300;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(31,159,255,0.15);border-color:rgba(31,159,255,0.35)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-answer-inner{padding:0 24px 20px;font-size:14px;color:var(--text2);line-height:1.85}

/* CTA */
.cta-section{padding:96px 0;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:700px;height:500px;border-radius:50%;
  background:radial-gradient(ellipse,rgba(31,159,255,0.12),transparent 70%);
  pointer-events:none;
}
.cta-section::after{
  content:"9";position:absolute;right:-40px;bottom:-80px;font-size:280px;font-weight:900;
  color:rgba(31,159,255,0.035);line-height:1;pointer-events:none;font-variant-numeric:tabular-nums;
}
.cta-box{
  position:relative;z-index:2;text-align:center;max-width:700px;margin:0 auto;
  background:var(--card-bg);backdrop-filter:blur(24px);
  border:1px solid rgba(255,255,255,0.10);border-radius:32px;
  padding:56px 48px;box-shadow:var(--shadow-card);
}
.cta-box h2{font-size:clamp(24px,2.5vw,32px);font-weight:800;color:#fff;margin-bottom:12px}
.cta-box p{font-size:15px;color:var(--text2);margin-bottom:32px;line-height:1.8}
.cta-box .btn-primary{min-width:200px;min-height:56px;font-size:16px;padding:14px 44px}
@media(max-width:768px){.cta-section{padding:56px 0}.cta-box{padding:40px 24px}}

/* Footer */
.site-footer{background:#0A0F18;border-top:1px solid rgba(255,255,255,0.06);padding:64px 0 0;color:var(--text2)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-logo{display:flex;align-items:center;gap:4px;margin-bottom:16px}
.footer-logo .logo-mark{font-size:26px}
.footer-logo .logo-text{font-size:16px;font-weight:800;color:#fff}
.footer-desc{font-size:13px;color:var(--text3);line-height:1.8;max-width:280px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:0.02em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13px;color:var(--text3);transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-contact p{font-size:13px;color:var(--text3);line-height:2}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.06);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text3);
}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;text-align:center}}

/* 动效 */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}canvas{position:fixed}

/* Scroll Top */
.scroll-top{
  position:fixed;bottom:32px;right:24px;z-index:99;width:44px;height:44px;border-radius:50%;
  background:rgba(31,159,255,0.15);border:1px solid rgba(31,159,255,0.3);
  color:#fff;font-size:20px;display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s,transform .2s;
  backdrop-filter:blur(8px);cursor:pointer;
}
.scroll-top.show{opacity:1;visibility:visible}
.scroll-top:hover{background:rgba(31,159,255,0.3);transform:translateY(-2px)}
.scroll-top:active{transform:scale(0.95)}

/* roulang page: article */
:root {
    --bg-primary: #0D1420;
    --bg-secondary: #111C2E;
    --bg-deep: #0A0F18;
    --accent-blue: #1F9FFF;
    --accent-cyan: #0BCCF0;
    --accent-gold: #E6B45A;
    --success: #2FDD8B;
    --danger: #FF5470;
    --text-primary: #F2F7FF;
    --text-secondary: #9FB0C7;
    --text-muted: #6C7C91;
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.10);
    --glass-hover-bg: rgba(255,255,255,0.10);
    --glass-hover-border: rgba(255,255,255,0.22);
    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --radius-pill: 48px;
    --shadow-card: 0 16px 46px rgba(0,0,0,0.30);
    --shadow-glow: 0 8px 30px rgba(31,159,255,0.35);
    --font-family: -apple-system, "BlinkMacSystemFont", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

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

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    z-index: 100;
    background: rgba(13,20,30,0.78);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s, box-shadow .3s;
}

.site-header.scrolled {
    border-bottom-color: rgba(255,255,255,0.06);
    box-shadow: 0 6px 30px rgba(0,0,0,0.30);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    height: 72px;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    flex-shrink: 0;
}

.logo-mark {
    font-size: 26px;
    font-weight: 900;
    background: linear-gradient(135deg, #E6B45A, #F5D48A);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: scale(1.2);
    transform-origin: bottom;
    line-height: 1;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: .02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    position: relative;
    transition: color .25s, background .25s;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width .3s;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 24px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 28px;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: filter .25s, box-shadow .25s, transform .25s;
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 10px 42px rgba(31,159,255,0.48);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    transition: background .25s;
}

.nav-toggle:hover {
    background: rgba(255,255,255,0.10);
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}

body.menu-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

body.menu-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Article Main ===== */
.article-main {
    padding: 130px 0 80px;
    min-height: calc(100vh - 72px);
    position: relative;
    overflow: hidden;
}

.article-main::before {
    content: "9";
    position: absolute;
    right: -80px;
    top: 60px;
    font-size: 360px;
    font-weight: 900;
    color: rgba(255,255,255,0.02);
    line-height: 1;
    pointer-events: none;
    z-index: 0;
}

.article-main::after {
    content: "";
    position: absolute;
    left: -120px;
    top: 200px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(31,159,255,0.08), transparent 60%);
    pointer-events: none;
    z-index: 0;
}

.article-wrap {
    position: relative;
    z-index: 1;
    max-width: 860px;
    margin: 0 auto;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color .2s;
}

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

.breadcrumb .sep {
    opacity: .6;
}

.breadcrumb .current {
    color: var(--text-muted);
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Article TDK */
.article-tdk {
    padding: 36px 40px;
    background: linear-gradient(135deg, rgba(31,159,255,0.10), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 24px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: var(--shadow-card);
    margin-bottom: 24px;
}

.article-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(31,159,255,0.18), rgba(11,204,240,0.12));
    border: 1px solid rgba(31,159,255,0.22);
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .06em;
    color: var(--accent-cyan);
}

.article-tdk h1 {
    margin-top: 18px;
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 900;
    line-height: 1.3;
    color: var(--text-primary);
    word-break: break-word;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

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

/* Article Content */
.article-content {
    padding: 36px 40px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 24px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: var(--shadow-card);
    font-size: 15px;
    line-height: 1.9;
    color: #C5D0E3;
    word-break: break-word;
}

.article-cover {
    width: 100%;
    max-height: 380px;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.12);
    margin-bottom: 28px;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.4;
    margin: 40px 0 16px;
}

.article-content h2 {
    font-size: 1.5rem;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.article-content h3 {
    font-size: 1.1875rem;
}

.article-content h4 {
    font-size: 1rem;
}

.article-content p {
    margin-bottom: 16px;
    font-size: 15px;
    line-height: 1.9;
}

.article-content img {
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.10);
    margin: 20px 0;
}

.article-content blockquote {
    border-left: 4px solid var(--accent-blue);
    padding: 16px 24px;
    margin: 20px 0;
    background: rgba(31,159,255,0.06);
    border-radius: 0 12px 12px 0;
    color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
    margin: 16px 0 20px;
    padding-left: 1.5em;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content a {
    color: var(--accent-cyan);
    border-bottom: 1px solid rgba(11,204,240,0.30);
    transition: color .2s, border-color .2s;
}

.article-content a:hover {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.article-empty {
    text-align: center;
    padding: 60px 20px;
}

.article-empty .empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(31,159,255,0.10);
    border: 1px solid rgba(31,159,255,0.18);
    font-size: 24px;
}

.article-empty p {
    font-size: 16px;
    color: var(--text-secondary);
}

.article-empty a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    padding: 10px 32px;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: filter .25s, box-shadow .25s;
}

.article-empty a:hover {
    filter: brightness(1.1);
    box-shadow: 0 10px 42px rgba(31,159,255,0.48);
}

/* Tags */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 18px;
    background: rgba(31,159,255,0.10);
    border: 1px solid rgba(31,159,255,0.20);
    border-radius: var(--radius-pill);
    font-size: 12px;
    color: var(--accent-cyan);
    transition: background .25s, border-color .25s;
}

.tag:hover {
    background: rgba(31,159,255,0.18);
    border-color: rgba(31,159,255,0.35);
}

/* Pager */
.article-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}

.pager-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    min-height: 56px;
    padding: 12px 20px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    transition: border-color .25s, box-shadow .25s, background .25s, transform .25s;
}

.pager-btn:hover {
    border-color: rgba(31,159,255,0.35);
    box-shadow: 0 0 24px rgba(31,159,255,0.12);
    background: rgba(255,255,255,0.10);
}

.pager-btn:active {
    transform: scale(0.98);
}

.pager-btn:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

.pager-btn.disabled {
    opacity: .40;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
    background: rgba(255,255,255,0.03);
}

.pager-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.pager-title {
    font-size: 14px;
    font-weight: 600;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

/* Related */
.related-posts {
    margin-top: 40px;
}

.related-posts h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.related-card {
    display: block;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    overflow: hidden;
    transition: transform .3s, border-color .3s, box-shadow .3s;
}

.related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(31,159,255,0.30);
    box-shadow: 0 10px 30px rgba(0,0,0,0.20);
}

.related-card img {
    width: 100%;
    height: 130px;
    object-fit: cover;
    border-radius: 0;
    border: none;
}

.related-card h3 {
    padding: 14px 16px 4px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 16px 14px;
    font-size: 12px;
    color: var(--text-muted);
}

.related-footer {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 36px;
    border-radius: var(--radius-pill);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--text-secondary);
    font-size: 14px;
    transition: border-color .25s, color .25s, box-shadow .25s;
}

.btn-ghost:hover {
    border-color: rgba(31,159,255,0.40);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(31,159,255,0.10);
}

.btn-ghost:active {
    transform: scale(0.98);
}

.btn-ghost:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 2px;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-logo {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 12px;
}

.footer-logo .logo-mark {
    font-size: 24px;
}

.footer-logo .logo-text {
    font-size: 17px;
}

.footer-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 300px;
}

.footer-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

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

.footer-links a {
    font-size: 13px;
    color: var(--text-secondary);
    transition: color .25s, padding-left .25s;
}

.footer-links a:hover {
    color: var(--accent-cyan);
    padding-left: 4px;
}

.footer-contact p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .header-inner .nav-cta {
        display: none;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        right: 0;
        bottom: 0;
        width: 280px;
        background: rgba(17,28,46,0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 32px 24px;
        gap: 8px;
        transform: translateX(100%);
        transition: transform .35s cubic-bezier(.4,0,.2,1);
        box-shadow: -20px 0 60px rgba(0,0,0,0.30);
        z-index: 99;
    }

    body.menu-open .nav-links {
        transform: translateX(0);
    }

    body.menu-open .header-inner .nav-cta {
        display: inline-flex;
        position: fixed;
        bottom: 24px;
        left: 50%;
        transform: translateX(-50%);
        width: calc(100% - 48px);
        max-width: 360px;
        z-index: 101;
        height: 48px;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: 14px 16px;
        font-size: 15px;
        border-radius: 12px;
    }

    .nav-link::after {
        display: none;
    }

    .nav-link.active {
        background: rgba(31,159,255,0.12);
        color: var(--accent-cyan);
    }

    .article-main {
        padding: 110px 0 48px;
    }

    .article-wrap {
        max-width: 100%;
    }

    .article-tdk {
        padding: 24px 20px;
    }

    .article-content {
        padding: 20px;
    }

    .article-pager {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 520px) {
    .article-tdk h1 {
        font-size: 1.5rem;
    }

    .article-content {
        padding: 16px;
    }

    .article-content h2 {
        font-size: 1.25rem;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* roulang page: category2 */
:root {
            --bg: #0D1420;
            --bg-deep: #0A0F18;
            --bg-card: #111C2E;
            --primary: #1F9FFF;
            --primary-end: #0BCCF0;
            --gold: #E6B45A;
            --gold-light: #FFD98A;
            --success: #2FDD8B;
            --danger: #FF5470;
            --text: #F2F7FF;
            --text-sub: #9FB0C7;
            --text-weak: #6C7C91;
            --border: rgba(255, 255, 255, 0.10);
            --border-light: rgba(255, 255, 255, 0.06);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-pill: 48px;
            --shadow-card: 0 16px 46px rgba(0, 0, 0, 0.30);
            --shadow-glow: 0 8px 30px rgba(31, 159, 255, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "BlinkMacSystemFont", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul {
            list-style: none;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(31, 159, 255, 0.70);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            z-index: 1000;
            display: flex;
            align-items: center;
            background: transparent;
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(13, 20, 30, 0.78);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.25);
        }

        .header-inner {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 4px;
            position: relative;
            border-radius: 10px;
            padding: 2px 6px;
            overflow: hidden;
        }

        .logo-mark {
            font-size: 34px;
            font-weight: 900;
            line-height: 1;
            font-variant-numeric: tabular-nums;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
        }

        .logo::after {
            content: '';
            position: absolute;
            top: 0;
            left: -120%;
            width: 60%;
            height: 100%;
            background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.12), transparent);
            transform: skewX(-20deg);
            transition: left 0.6s ease;
            pointer-events: none;
        }

        .logo:hover::after {
            left: 160%;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 34px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            padding: 8px 2px;
            position: relative;
            transition: color 0.25s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--text);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-end));
            transition: width 0.3s ease;
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-end));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-pill);
            width: 132px;
            height: 44px;
            box-shadow: var(--shadow-glow);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            filter: brightness(1.1);
            box-shadow: 0 10px 42px rgba(31, 159, 255, 0.48);
            transform: translateY(-1px);
        }

        .nav-cta:active {
            transform: scale(0.98);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            gap: 5px;
            z-index: 1100;
            flex-shrink: 0;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            width: 24px;
            background: var(--text);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

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

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

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

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            min-height: 280px;
            padding: 140px 0 56px;
            background: linear-gradient(120deg, rgba(10, 15, 24, 0.92), rgba(17, 28, 46, 0.85)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            overflow: hidden;
        }

        .page-banner::before {
            content: '9';
            position: absolute;
            right: 4%;
            top: 50%;
            transform: translateY(-50%);
            font-size: 230px;
            font-weight: 900;
            line-height: 1;
            color: rgba(31, 159, 255, 0.05);
            z-index: 0;
            pointer-events: none;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .banner-breadcrumb {
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 14px;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .banner-breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s;
        }

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

        .banner-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .banner-title span {
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .banner-sub {
            font-size: 15px;
            color: var(--text-sub);
            max-width: 620px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 84px 0;
        }

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

        .section-tag {
            display: inline-block;
            background: rgba(31, 159, 255, 0.12);
            color: var(--primary-end);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.05em;
            border: 1px solid rgba(31, 159, 255, 0.22);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.5vw, 2.125rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-sub);
            font-size: 15px;
            max-width: 680px;
            margin: 0 auto;
        }

        /* ===== Intro ===== */
        .intro-section {
            padding: 84px 0;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
        }

        .intro-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            background: radial-gradient(circle at 30% 30%, rgba(31, 159, 255, 0.16), transparent 60%), linear-gradient(135deg, rgba(17, 28, 46, 0.8), rgba(13, 20, 30, 0.9));
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }

        .intro-content h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .intro-content p {
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .intro-list {
            margin-top: 22px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-sub);
            font-size: 15px;
        }

        .intro-list li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-end));
            margin-top: 9px;
            box-shadow: 0 0 10px rgba(31, 159, 255, 0.6);
        }

        /* ===== Benefits ===== */
        .benefits-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .benefit-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .benefit-card:hover {
            transform: translateY(-6px);
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.22);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.30), 0 0 32px rgba(31, 159, 255, 0.16);
        }

        .benefit-card--large {
            grid-column: span 7;
        }

        .benefit-card--small {
            grid-column: span 5;
        }

        .benefit-card--wide {
            grid-column: span 6;
        }

        .benefit-num {
            font-size: 24px;
            font-weight: 900;
            font-variant-numeric: tabular-nums;
            background: linear-gradient(135deg, var(--gold), var(--gold-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 16px;
        }

        .benefit-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .benefit-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            position: relative;
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 58px;
            left: 16%;
            right: 16%;
            height: 1px;
            background: linear-gradient(90deg, rgba(31, 159, 255, 0.30), rgba(31, 159, 255, 0.08));
            z-index: 0;
        }

        .step-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            z-index: 1;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(31, 159, 255, 0.35);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-end));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            font-variant-numeric: tabular-nums;
            box-shadow: 0 8px 24px rgba(31, 159, 255, 0.30);
            margin-bottom: 18px;
        }

        .step-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .faq-panel {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item.active {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(31, 159, 255, 0.35);
            box-shadow: 0 0 24px rgba(31, 159, 255, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            min-height: 56px;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary-end);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(31, 159, 255, 0.15);
        }

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

        .faq-answer p {
            padding: 2px 22px 20px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 96px 0;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(31, 159, 255, 0.13), transparent 60%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
            padding: 48px 40px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .cta-title {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-desc {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 28px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-end));
            color: #fff;
            font-weight: 700;
            border-radius: var(--radius-pill);
            padding: 0 34px;
            height: 52px;
            font-size: 15px;
            box-shadow: 0 10px 34px rgba(31, 159, 255, 0.35);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            box-shadow: 0 12px 44px rgba(31, 159, 255, 0.50);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            color: var(--text);
            border-radius: var(--radius-pill);
            padding: 0 34px;
            height: 52px;
            font-size: 15px;
            font-weight: 600;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(31, 159, 255, 0.40);
            box-shadow: 0 0 24px rgba(31, 159, 255, 0.12);
        }

        .btn-ghost:active {
            transform: scale(0.98);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            padding: 60px 0 0;
            border-top: 1px solid var(--border-light);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-logo {
            display: flex;
            align-items: baseline;
            gap: 4px;
            margin-bottom: 14px;
        }

        .footer-logo .logo-mark {
            font-size: 30px;
        }

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

        .footer-desc {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

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

        .footer-links a {
            color: var(--text-weak);
            font-size: 13px;
            transition: color 0.2s ease;
        }

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

        .footer-contact p {
            color: var(--text-weak);
            font-size: 13px;
            margin-bottom: 8px;
        }

        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid var(--border-light);
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-weak);
        }

        .footer-bottom span:last-child {
            color: #5A6A7E;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .benefit-card--large,
            .benefit-card--small,
            .benefit-card--wide {
                grid-column: span 6;
            }

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

        @media (max-width: 768px) {
            .header-inner {
                padding: 0 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 72px;
                right: 0;
                width: 100%;
                height: calc(100vh - 72px);
                background: rgba(10, 15, 24, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 32px 24px;
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                z-index: 99;
                overflow-y: auto;
            }

            .nav-links.open {
                transform: translateY(0);
            }

            .nav-link {
                width: 100%;
                padding: 16px 0;
                font-size: 18px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-link::after {
                bottom: 6px;
            }

            .nav-cta {
                position: fixed;
                bottom: 16px;
                left: 16px;
                right: 16px;
                width: auto;
                z-index: 1100;
                height: 48px;
                box-shadow: 0 8px 30px rgba(31, 159, 255, 0.40);
            }

            .page-banner {
                padding: 120px 0 40px;
                min-height: auto;
            }

            .page-banner::before {
                font-size: 160px;
            }

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

            .benefit-card--large,
            .benefit-card--small,
            .benefit-card--wide {
                grid-column: span 12;
            }

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

            .steps-grid::before {
                display: none;
            }

            .cta-section {
                padding: 64px 0;
            }

            .cta-inner {
                padding: 32px 20px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }

            .nav-cta {
                left: 12px;
                right: 12px;
                bottom: 12px;
            }

            .banner-title {
                font-size: 1.8rem;
            }

            .banner-sub {
                font-size: 14px;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-ghost {
                width: 100%;
            }
        }