/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
    --primary: #6C3EF5;
    --primary-dark: #4B2BC4;
    --primary-light: rgba(108, 62, 245, 0.08);
    --primary-light-hover: rgba(108, 62, 245, 0.16);
    --accent: #FF6B2C;
    --accent-dark: #E55A1F;
    --cyan: #0EA5E9;
    --ink: #0F172A;
    --ink-2: #1E1B4B;
    --bg: #F6F7FB;
    --card-bg: #FFFFFF;
    --title-color: #111827;
    --text-color: #374151;
    --muted-color: #9CA3AF;
    --border-color: #EDE9FE;
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 8px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 12px 32px rgba(76, 29, 149, 0.10);
    --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --font-num: "Barlow Condensed", "DIN Alternate", sans-serif;
    --container: 1280px;
    --space-xl: 96px;
    --space-lg: 64px;
    --space-md: 40px;
    --space-sm: 24px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-cn);
    background: var(--bg);
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; border: none; background: none; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; color: var(--title-color); line-height: 1.3; font-weight: 700; }
p { margin: 0; }
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== 容器 ===== */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 通用按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 48px;
    padding: 0 28px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 16px;
    line-height: 1;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 44, 0.35);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}
.btn-secondary {
    background: var(--primary-light);
    color: var(--primary);
}
.btn-secondary:hover {
    background: var(--primary-light-hover);
}
.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }
.btn-link {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: all 0.2s;
}
.btn-link:hover { text-decoration: none; color: var(--primary-dark); }

/* ===== 常用徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 28px;
    padding: 0 14px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.badge-live { background: rgba(16, 185, 129, 0.12); color: #10B981; }
.badge-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #10B981; }
.badge-warn { background: rgba(255, 107, 44, 0.12); color: var(--accent); }
.badge-warn::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.badge-maint { background: rgba(239, 68, 68, 0.12); color: #EF4444; }
.badge-maint::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #EF4444; }
.badge-history { background: rgba(156, 163, 175, 0.15); color: #6B7280; }

/* ===== 标签 ===== */
.tag {
    display: inline-flex;
    align-items: center;
    height: 26px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s;
}
.tag:hover { background: var(--primary-light-hover); }

/* ===== 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
    transition: all 0.3s ease;
}
.site-header.scrolled {
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(108, 62, 245, 0.3);
}
.brand-text {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}
.main-nav .nav-link {
    position: relative;
    height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0 18px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    transition: color 0.2s, background 0.2s;
}
.main-nav .nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}
.main-nav .nav-link.active {
    color: #fff;
}
.main-nav .nav-link.active::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 6px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
}
.btn-header {
    height: 40px;
    padding: 0 22px;
    border-radius: var(--radius-pill);
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: background 0.2s, transform 0.2s;
    flex-shrink: 0;
}
.btn-header:hover { background: var(--accent-dark); transform: translateY(-1px); }
.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.08);
}
.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: all 0.3s;
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 移动端抽屉菜单 ===== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
    padding: 32px 24px;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
    display: block;
    padding: 16px 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 18px;
    font-weight: 600;
    border-radius: 12px;
    transition: background 0.2s, color 0.2s;
}
.mobile-menu a:hover, .mobile-menu a.active { background: rgba(255, 255, 255, 0.08); color: #fff; }
.mobile-menu .btn-header {
    margin-top: 16px;
    justify-content: center;
    height: 48px;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 160px 0 96px;
    background: linear-gradient(135deg, var(--ink) 0%, #1E1B4B 55%, #2E1065 100%);
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}
.hero::after {
    content: "";
    position: absolute;
    top: -120px;
    right: -80px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: rgba(108, 62, 245, 0.35);
    filter: blur(100px);
    z-index: 1;
    pointer-events: none;
}
.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 48px;
    align-items: center;
}
.hero-content { max-width: 620px; }
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 32px;
    padding: 0 16px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 24px;
}
.hero-eyebrow .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10B981;
}
.hero h1 {
    color: #fff;
    font-size: 40px;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}
.hero h1 .grad-text {
    background: linear-gradient(90deg, #A78BFA 0%, #38BDF8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-sub {
    color: rgba(255, 255, 255, 0.65);
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.hero-actions .btn-primary {
    min-width: 140px;
}
.hero-actions .btn-hero-link {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
    padding: 12px 8px;
    transition: color 0.2s;
}
.hero-actions .btn-hero-link:hover { color: #fff; }

/* Hero 封面卡 */
.hero-card {
    position: relative;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}
.hero-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.hero-card-title {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}
.hero-card-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 26px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    background: rgba(16, 185, 129, 0.15);
    color: #10B981;
    font-size: 12px;
    font-weight: 600;
}
.hero-card-status::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10B981;
}
.hero-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}
.hero-card-item {
    background: rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}
.hero-card-item .label {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}
.hero-card-item .value {
    font-size: 15px;
    color: #fff;
    font-weight: 600;
}
.hero-card-img {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-card-img img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    display: block;
}

/* ===== 数据徽章条 ===== */
.stats-bar {
    background: var(--bg);
    padding: 0;
    position: relative;
    z-index: 3;
    margin-top: -32px;
}
.stats-inner {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding: 32px 40px;
}
.stat-item {
    text-align: center;
    padding: 12px 8px;
    position: relative;
}
.stat-item:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 48px;
    background: var(--border-color);
}
.stat-num {
    font-family: var(--font-num);
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--primary) 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.stat-label {
    font-size: 14px;
    color: var(--text-color);
    margin-top: 4px;
    font-weight: 500;
}

/* ===== 板块通用 ===== */
.section { padding: var(--space-xl) 0; }
.section .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 40px;
}
.section .section-head .section-title {
    font-size: 32px;
    font-weight: 700;
    position: relative;
}
.section .section-head .section-title::before {
    content: "";
    display: block;
    width: 36px;
    height: 4px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary), var(--cyan));
    margin-bottom: 12px;
}
.section .section-head .section-desc {
    color: var(--muted-color);
    font-size: 15px;
    margin-top: 8px;
}
.section-alt { background: var(--card-bg); }

/* ===== 倒计时区 ===== */
.countdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.countdown-card {
    background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
    border-radius: var(--radius-lg);
    padding: 32px;
    color: #fff;
}
.countdown-card .card-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 24px;
}
.countdown-card .card-label .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(255, 107, 44, 0.6);
}
.countdown-wrap {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}
.count-item {
    flex: 1;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 16px 8px;
    text-align: center;
}
.count-item .num {
    display: block;
    font-family: var(--font-num);
    font-size: 40px;
    font-weight: 700;
    color: #fff;
    line-height: 1.1;
}
.count-item .unit {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 4px;
}
.countdown-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}
.countdown-points {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.point-item {
    display: flex;
    gap: 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    transition: all 0.25s ease;
}
.point-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 62, 245, 0.3);
    transform: translateY(-2px);
}
.point-num {
    font-family: var(--font-num);
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    min-width: 32px;
    line-height: 1.3;
}
.point-body { flex: 1; }
.point-body h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.point-body p {
    font-size: 14px;
    color: var(--muted-color);
    line-height: 1.6;
}

/* ===== 看点列表 ===== */
.highlight-grid {
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 24px;
    margin-bottom: 24px;
}
.highlight-main {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}
.highlight-main:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 62, 245, 0.3);
    transform: translateY(-2px);
}
.highlight-main .hd-img {
    position: relative;
    height: 260px;
    overflow: hidden;
}
.hd-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.highlight-main:hover .hd-img img { transform: scale(1.03); }
.hd-img .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
}
.hd-body {
    padding: 20px 24px 24px;
}
.hd-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}
.hd-body p {
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 12px;
}
.hd-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--muted-color);
}
.highlight-side {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.highlight-side .card-sm {
    flex: 1;
    display: flex;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.25s ease;
}
.highlight-side .card-sm:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 62, 245, 0.3);
    transform: translateY(-2px);
}
.card-sm .cs-img {
    width: 140px;
    flex-shrink: 0;
}
.card-sm .cs-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.card-sm .cs-body {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.card-sm .cs-body h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.5;
}
.card-sm .cs-body p {
    font-size: 13px;
    color: var(--muted-color);
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.cs-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--muted-color);
}

/* ===== 订阅区 ===== */
.subscribe-section {
    position: relative;
    padding: var(--space-xl) 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.subscribe-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 27, 75, 0.88) 100%);
}
.subscribe-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.subscribe-text h2 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 12px;
}
.subscribe-text p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 16px;
    line-height: 1.8;
}
.subscribe-form-wrap {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 24px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.subscribe-form {
    display: flex;
    gap: 0;
    margin-bottom: 12px;
}
.subscribe-form input {
    flex: 1;
    height: 48px;
    padding: 0 20px;
    border-radius: var(--radius-pill) 0 0 var(--radius-pill);
    background: rgba(255, 255, 255, 0.95);
    font-size: 15px;
    border: none;
    outline: none;
    color: var(--title-color);
}
.subscribe-form input:focus {
    box-shadow: 0 0 0 3px rgba(108, 62, 245, 0.25);
}
.subscribe-form .btn {
    border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
}
.subscribe-privacy {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.45);
}
.subscribe-privacy a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: underline;
}

/* ===== 回放入口 ===== */
.replay-scroll {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    overflow-x: auto;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
}
.replay-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
    scroll-snap-align: start;
    scroll-snap-stop: normal;
    position: relative;
}
.replay-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 62, 245, 0.3);
    transform: translateY(-4px);
}
.replay-card .rc-img {
    position: relative;
    height: 160px;
    overflow: hidden;
}
.replay-card .rc-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.replay-card .rc-img .play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}
.replay-card:hover .rc-img .play-overlay { opacity: 1; }
.play-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
}
.play-icon::after {
    content: "";
    display: block;
    width: 0;
    height: 0;
    border-left: 10px solid var(--primary);
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    margin-left: 3px;
}
.replay-card .rc-img .rc-duration {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}
.replay-card .rc-img .rc-views {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}
.replay-card .rc-body {
    padding: 16px;
}
.replay-card .rc-body h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.replay-card .rc-body .rc-date {
    font-size: 13px;
    color: var(--muted-color);
}

/* ===== 最新资讯列表 ===== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.news-card {
    display: flex;
    align-items: center;
    gap: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    transition: all 0.25s ease;
}
.news-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 62, 245, 0.3);
    transform: translateY(-2px);
}
.news-card .nc-img {
    width: 120px;
    height: 80px;
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
}
.news-card .nc-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.news-card .nc-body { flex: 1; min-width: 0; }
.news-card .nc-body h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-card .nc-body p {
    font-size: 14px;
    color: var(--muted-color);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}
.news-card .nc-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--muted-color);
}
.list-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 60px 24px;
    background: var(--card-bg);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
}
.list-empty .empty-emoji {
    font-size: 48px;
    line-height: 1;
}
.list-empty p {
    font-size: 15px;
    color: var(--muted-color);
}

/* ===== FAQ ===== */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 900px;
    margin: 0 auto;
}
.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}
.faq-item.open {
    border-color: rgba(108, 62, 245, 0.4);
    background: rgba(108, 62, 245, 0.03);
    box-shadow: var(--shadow-sm);
}
.faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--title-color);
    transition: color 0.2s;
    min-height: 44px;
}
.faq-q:hover { color: var(--primary); }
.faq-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s, background 0.3s;
}
.faq-icon::before, .faq-icon::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
    transition: all 0.3s;
}
.faq-icon { position: relative; }
.faq-icon::after { transform: rotate(90deg); }
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: #fff; }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-a-inner {
    padding: 0 24px 20px;
    border-left: 3px solid var(--primary);
    margin-left: 24px;
    margin-right: 24px;
    padding-left: 16px;
}
.faq-a-inner p {
    font-size: 15px;
    color: var(--text-color);
    line-height: 1.8;
}

/* ===== CTA 带状区 ===== */
.cta-band {
    position: relative;
    padding: 64px 0;
    background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 60%, #2E1065 100%);
    overflow: hidden;
}
.cta-band::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(108, 62, 245, 0.35) 0%, transparent 70%);
    pointer-events: none;
}
.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.cta-inner h2 {
    color: #fff;
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 8px;
}
.cta-inner p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 16px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--ink);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-brand .brand-text { display: block; margin-bottom: 16px; }
.footer-brand p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}
.social-icon:hover { background: rgba(255, 255, 255, 0.15); transform: translateY(-2px); }
.social-icon svg { width: 18px; height: 18px; fill: rgba(255, 255, 255, 0.8); }
.footer-col h3 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
    color: rgba(255, 255, 255, 0.55);
    font-size: 14px;
    transition: color 0.2s;
}
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 24px 0;
    flex-wrap: wrap;
}
.footer-bottom p {
    color: #94A3B8;
    font-size: 13px;
}

/* ===== 回顶 ===== */
.back-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.75);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: rgba(15, 23, 42, 0.9); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .main-nav { gap: 2px; }
    .main-nav .nav-link { padding: 0 12px; font-size: 14px; }
    .hero h1 { font-size: 34px; }
    .hero .container { gap: 32px; }
    .countdown-grid { grid-template-columns: 1fr; }
    .highlight-grid { grid-template-columns: 1fr 1fr; }
    .highlight-side { flex-direction: row; }
    .highlight-side .card-sm { flex-direction: column; }
    .card-sm .cs-img { width: 100%; height: 100px; }
    .replay-scroll { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .subscribe-inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .section { padding: var(--space-lg) 0; }
    .main-nav { display: none; }
    .btn-header { display: none; }
    .menu-toggle { display: flex; }
    .hero .container {
        grid-template-columns: 1fr;
        padding-top: 32px;
    }
    .hero { padding: 120px 0 64px; }
    .hero h1 { font-size: 30px; }
    .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 24px; }
    .stat-item:not(:last-child)::after { display: none; }
    .highlight-grid { grid-template-columns: 1fr; }
    .highlight-side { flex-direction: column; }
    .highlight-main .hd-img { height: 180px; }
    .replay-scroll { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .subscribe-form { flex-direction: column; }
    .subscribe-form input { border-radius: var(--radius-pill); margin-bottom: 12px; }
    .subscribe-form .btn { border-radius: var(--radius-pill); width: 100%; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .news-card { flex-direction: column; align-items: flex-start; gap: 12px; }
    .news-card .nc-img { width: 100%; height: 140px; }
    .section-head { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 26px; }
    .hero-sub { font-size: 15px; }
    .stats-inner { grid-template-columns: 1fr 1fr; padding: 16px; gap: 12px; }
    .stat-num { font-size: 30px; }
    .replay-scroll { grid-template-columns: 1fr; }
    .countdown-card { padding: 24px 16px; }
    .count-item .num { font-size: 30px; }
    .section .section-head .section-title { font-size: 24px; }
    .faq-q { font-size: 15px; padding: 16px; }
    .faq-a-inner { padding: 0 16px 16px; }
}

/* roulang page: category1 */
:root {
  --primary: #6C3EF5;
  --primary-dark: #4B2BC4;
  --primary-light: rgba(108, 62, 245, 0.08);
  --secondary: #0F172A;
  --accent: #0EA5E9;
  --cta: #FF6B2C;
  --cta-dark: #E55A1F;
  --bg: #F6F7FB;
  --white: #FFFFFF;
  --text: #111827;
  --text-body: #374151;
  --text-muted: #9CA3AF;
  --border: #EDE9FE;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(76, 29, 149, 0.10);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-num: "Barlow Condensed", "DIN Alternate", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.75;
  background: var(--bg);
  color: var(--text-body);
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.25);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(15, 23, 42, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(108, 62, 245, 0.35);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}

.nav-link {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 16px rgba(108, 62, 245, 0.35);
}

.nav-cta {
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-cn);
  white-space: nowrap;
}

.btn-primary {
  background: var(--cta);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255, 107, 44, 0.30);
}

.btn-primary:hover {
  background: var(--cta-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(255, 107, 44, 0.38);
}

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

.btn-outline {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(108, 62, 245, 0.18);
}

.btn-outline:hover {
  background: rgba(108, 62, 245, 0.16);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.btn-light:hover {
  background: var(--bg);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: linear-gradient(160deg, #0F172A 0%, #1E1B4B 100%);
  padding: 100px 32px 40px;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.mobile-menu.show {
  display: flex;
}

.mobile-menu-link {
  padding: 14px 16px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  border-radius: 14px;
  font-weight: 600;
}

.mobile-menu-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.mobile-menu-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
}

.mobile-menu-close {
  position: absolute;
  top: 16px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
}

.mobile-menu-cta {
  margin-top: 16px;
  width: 100%;
}

/* ===== Hero ===== */
.hero-category {
  position: relative;
  background: linear-gradient(135deg, #F6F7FB 0%, #EEF2FF 55%, #EDE9FE 100%);
  padding: 88px 0 72px;
  overflow: hidden;
}

.hero-category::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(108, 62, 245, 0.14) 0%, rgba(108, 62, 245, 0) 70%);
  border-radius: 50%;
}

.hero-category::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.10) 0%, rgba(14, 165, 233, 0) 70%);
  border-radius: 50%;
}

.hero-category .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--primary-light);
  border: 1px solid rgba(108, 62, 245, 0.16);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: 40px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-title span {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 32px;
}

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

.hero-media {
  position: relative;
}

.hero-img-wrap {
  border-radius: 24px;
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg);
  transform: rotate(1.5deg);
  transition: transform 0.4s ease;
}

.hero-img-wrap:hover {
  transform: rotate(0deg) scale(1.02);
}

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

.hero-float-card {
  position: absolute;
  bottom: -20px;
  left: -24px;
  background: var(--secondary);
  border-radius: 16px;
  padding: 18px 22px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.30);
  display: flex;
  align-items: center;
  gap: 14px;
}

.hero-float-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.hero-float-text {
  color: #fff;
}

.hero-float-text .num {
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 700;
  display: block;
  line-height: 1.2;
}

.hero-float-text .label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== Section Common ===== */
.section {
  padding: 96px 0;
}

.section-header {
  margin-bottom: 48px;
  max-width: 720px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

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

.section-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-body);
}

.text-center {
  text-align: center;
}

/* ===== Intro ===== */
.intro-section {
  padding: 96px 0;
  background: var(--white);
}

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

.intro-content {
  max-width: 580px;
}

.intro-content p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 20px;
}

.intro-points {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.intro-point {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.point-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
}

.point-text strong {
  display: block;
  font-size: 15px;
  color: var(--text);
  margin-bottom: 4px;
}

.point-text span {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.intro-visual {
  position: relative;
}

.intro-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.intro-visual-card {
  position: absolute;
  top: -18px;
  right: -14px;
  background: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
}

.intro-visual-card .mini-icon {
  width: 34px;
  height: 34px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.intro-visual-card .card-text {
  font-size: 13px;
  color: var(--text-body);
  font-weight: 600;
  line-height: 1.4;
}

/* ===== Cards ===== */
.cards-section {
  padding: 96px 0;
  background: var(--bg);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 32px 26px;
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(108, 62, 245, 0.4);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px rgba(108, 62, 245, 0.25);
}

.service-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

.card-link:hover {
  gap: 10px;
  color: var(--primary-dark);
}

/* ===== Process ===== */
.process-section {
  padding: 96px 0;
  background: var(--secondary);
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: "";
  position: absolute;
  top: -150px;
  left: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(108, 62, 245, 0.25) 0%, rgba(108, 62, 245, 0) 70%);
  border-radius: 50%;
}

.process-section .section-tag {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.10);
}

.process-section .section-title {
  color: #fff;
}

.process-section .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

.section-header.light {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
  margin-top: 48px;
}

.process-step {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: background 0.3s ease, transform 0.3s ease;
}

.process-step:hover {
  background: rgba(255, 255, 255, 0.10);
  transform: translateY(-4px);
}

.step-num {
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  color: var(--cta);
  display: block;
  margin-bottom: 16px;
  line-height: 1;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.step-desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.65);
}

/* ===== Relate ===== */
.relate-section {
  padding: 96px 0;
  background: var(--white);
}

.relate-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.relate-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 16px;
  transition: all 0.3s ease;
  align-items: center;
}

.relate-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(108, 62, 245, 0.35);
  transform: translateX(4px);
}

.relate-thumb {
  border-radius: 12px;
  overflow: hidden;
}

.relate-thumb img {
  width: 100%;
  height: 100px;
  object-fit: cover;
}

.relate-info {
  padding: 4px 4px 4px 0;
}

.relate-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  transition: color 0.2s ease;
}

.relate-item:hover .relate-title {
  color: var(--primary);
}

.relate-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.relate-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.meta-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 999px;
  font-weight: 600;
  font-size: 12px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 96px 0;
  background: var(--bg);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item[open] {
  border-color: rgba(108, 62, 245, 0.4);
  box-shadow: var(--shadow-sm);
  background: rgba(108, 62, 245, 0.015);
}

.faq-question {
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 28px 24px;
  border-left: 3px solid var(--primary);
  margin-left: 28px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

/* ===== CTA ===== */
.cta-section {
  padding: 96px 0;
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 60%, #312E81 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 62, 245, 0.2) 0%, rgba(108, 62, 245, 0) 70%);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta-title {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.3;
}

.cta-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 32px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: #0F172A;
  padding: 72px 0 0;
  color: rgba(255, 255, 255, 0.75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 16px;
  max-width: 320px;
}

.footer-social {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.social-icon {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.2s ease;
}

.social-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

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

.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

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

.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 24px 0 32px;
  font-size: 13px;
  color: #94A3B8;
  flex-wrap: wrap;
}

.footer-bottom a {
  color: #94A3B8;
}

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

/* ===== Back Top ===== */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.7);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s ease;
  z-index: 998;
  backdrop-filter: blur(8px);
}

.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--primary);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-category .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-media {
    max-width: 560px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }
  .intro-section,
  .cards-section,
  .process-section,
  .relate-section,
  .faq-section,
  .cta-section {
    padding: 64px 0;
  }
  .main-nav {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero-category {
    padding: 64px 0 56px;
  }
  .hero-title {
    font-size: 32px;
  }
  .section-title {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-float-card {
    left: 12px;
    bottom: 12px;
    padding: 12px 16px;
  }
  .relate-item {
    grid-template-columns: 1fr;
  }
  .relate-thumb img {
    height: 160px;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .faq-question {
    padding: 18px 20px;
  }
  .faq-answer {
    padding: 0 20px 20px;
    margin-left: 20px;
  }
}

/* roulang page: article */
:root {
    --purple-600: #6C3EF5;
    --purple-700: #4B2BC4;
    --purple-100: rgba(108, 62, 245, 0.08);
    --purple-200: rgba(108, 62, 245, 0.16);
    --cyan-500: #0EA5E9;
    --ink-900: #0F172A;
    --ink-800: #1E1B4B;
    --orange-500: #FF6B2C;
    --orange-600: #E55A1F;
    --bg-page: #F6F7FB;
    --bg-card: #FFFFFF;
    --text-heading: #111827;
    --text-body: #374151;
    --text-muted: #9CA3AF;
    --border-light: #EDE9FE;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-hover: 0 12px 32px rgba(76, 29, 149, 0.10);
    --radius-lg: 20px;
    --radius-md: 16px;
    --radius-sm: 8px;
    --radius-pill: 999px;
    --container-w: 1280px;
    --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --font-num: "Barlow Condensed", "DIN Alternate", "Arial Narrow", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-page);
    color: var(--text-body);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius-sm);
}

a {
    color: var(--purple-600);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--purple-700);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--purple-600);
    outline-offset: 2px;
}

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* ===================== 顶部导航 ===================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.is-sticky {
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.25);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

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

.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--purple-600), var(--cyan-500));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    color: rgba(255,255,255,0.75);
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.nav-link.active {
    color: #fff;
    background: rgba(255,255,255,0.10);
    box-shadow: inset 0 -2px 0 var(--orange-500);
}

.header-cta {
    flex-shrink: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    padding: 12px 28px;
    transition: all 0.25s ease;
    line-height: 1.2;
    white-space: nowrap;
}

.btn-primary {
    background: var(--orange-500);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 107, 44, 0.30);
}

.btn-primary:hover {
    background: var(--orange-600);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 44, 0.38);
}

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

.btn-outline-light {
    background: rgba(255,255,255,0.10);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.25);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.18);
    color: #fff;
    transform: translateY(-2px);
}

.btn-ghost {
    background: var(--purple-100);
    color: var(--purple-600);
}

.btn-ghost:hover {
    background: var(--purple-200);
    color: var(--purple-700);
}

.btn-cta-nav {
    padding: 10px 22px;
    font-size: 14px;
    height: 42px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.10);
    align-items: center;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.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);
}

/* ===================== 移动端菜单 ===================== */
.menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.menu-overlay.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    bottom: 16px;
    left: 16px;
    right: 16px;
    background: linear-gradient(135deg, #0F172A, #1E1B4B);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.35);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transform: translateY(130%);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.mobile-menu.open {
    transform: translateY(0);
}

.mobile-menu .nav-link {
    display: block;
    padding: 14px 20px;
    border-radius: var(--radius-pill);
    color: #fff;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    background: rgba(255,255,255,0.06);
}

.mobile-menu .nav-link:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
}

.mobile-menu .nav-link.active {
    background: var(--purple-600);
    color: #fff;
}

.mobile-menu .btn {
    margin-top: 8px;
}

/* ===================== 文章头部 ===================== */
.article-header {
    position: relative;
    background: linear-gradient(180deg, #FFFFFF 0%, #F6F7FB 100%);
    padding: 52px 0 40px;
    border-bottom: 1px solid var(--border-light);
    overflow: hidden;
}

.article-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--purple-600), var(--cyan-500), var(--orange-500));
}

.article-header::after {
    content: "";
    position: absolute;
    right: -120px;
    top: -120px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 62, 245, 0.10), transparent 70%);
    pointer-events: none;
}

.article-header .container {
    position: relative;
    z-index: 1;
    max-width: 1160px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.breadcrumb a {
    color: var(--text-muted);
    font-weight: 500;
}

.breadcrumb a:hover {
    color: var(--purple-600);
}

.breadcrumb-sep {
    color: #D1D5DB;
    font-weight: 300;
}

.breadcrumb-current {
    color: var(--text-body);
    font-weight: 600;
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.article-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.3;
    margin-bottom: 18px;
    max-width: 820px;
    letter-spacing: -0.5px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 20px;
}

.meta-pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    background: var(--purple-100);
    color: var(--purple-700);
    font-size: 13px;
    font-weight: 600;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

.meta-item svg {
    width: 16px;
    height: 16px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===================== 文章主体布局 ===================== */
.article-section {
    padding: 56px 0 80px;
}

.article-grid {
    display: grid;
    grid-template-columns: minmax(0, 760px) 320px;
    gap: 48px;
    justify-content: center;
    max-width: 1160px;
    margin: 0 auto;
}

.article-main {
    min-width: 0;
}

.article-body-wrap {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 40px 48px;
    box-shadow: var(--shadow-sm);
}

/* ===================== 正文排版 ===================== */
.article-body {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-body);
}

.article-body > * + * {
    margin-top: 1.4em;
}

.article-body p {
    margin-bottom: 1.5em;
    font-size: 17px;
    line-height: 1.8;
}

.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-heading);
    margin-top: 1.8em;
    margin-bottom: 0.8em;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
    line-height: 1.4;
}

.article-body h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--text-heading);
    margin-top: 1.5em;
    margin-bottom: 0.6em;
    line-height: 1.4;
}

.article-body ul,
.article-body ol {
    padding-left: 1.4em;
    margin-bottom: 1.5em;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 0.6em;
    padding-left: 0.2em;
}

.article-body a {
    color: var(--purple-600);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-weight: 500;
}

.article-body a:hover {
    color: var(--purple-700);
    text-decoration: none;
}

.article-body blockquote {
    border-left: 4px solid var(--purple-600);
    background: var(--purple-100);
    padding: 18px 22px;
    border-radius: 0 12px 12px 0;
    color: var(--text-body);
    font-style: normal;
    margin: 1.8em 0;
}

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

.article-body img {
    border-radius: var(--radius-md);
    margin: 1.8em 0;
    box-shadow: var(--shadow-sm);
}

.article-body code {
    background: #F1F0FF;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.9em;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    color: var(--purple-700);
}

.article-body pre {
    background: var(--ink-900);
    color: #E2E8F0;
    padding: 24px;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.8em 0;
    font-size: 14px;
    line-height: 1.7;
}

.article-body pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: inherit;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8em 0;
    font-size: 15px;
}

.article-body th,
.article-body td {
    border: 1px solid var(--border-light);
    padding: 12px 16px;
    text-align: left;
}

.article-body th {
    background: var(--purple-100);
    font-weight: 600;
    color: var(--text-heading);
}

.article-body tr:nth-child(even) {
    background: #FAFAFC;
}

/* ===================== 无文章状态 ===================== */
.not-found {
    text-align: center;
    padding: 64px 24px;
}

.not-found-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: var(--bg-page);
    display: flex;
    align-items: center;
    justify-content: center;
}

.not-found h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 12px;
}

.not-found p {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 28px;
}

/* ===================== 上一篇 / 下一篇 ===================== */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 48px;
}

.nav-btn {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px 24px;
    border-radius: var(--radius-md);
    background: var(--bg-page);
    border: 1px solid var(--border-light);
    transition: all 0.25s ease;
}

.nav-btn:hover {
    background: var(--purple-100);
    border-color: var(--purple-600);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.nav-btn.disabled {
    opacity: 0.55;
    pointer-events: none;
}

.nav-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
}

.nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-heading);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

.nav-btn:hover .nav-title {
    color: var(--purple-700);
}

/* ===================== 侧栏 ===================== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
    min-width: 0;
}

.side-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.side-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--purple-100);
    position: relative;
}

.side-card h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 32px;
    height: 2px;
    background: var(--purple-600);
}

.side-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.side-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #F3F4F6;
    transition: background 0.2s ease;
}

.side-list-item:last-child {
    border-bottom: none;
}

.side-list-thumb {
    width: 68px;
    height: 48px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
}

.side-list-info {
    min-width: 0;
    flex: 1;
}

.side-list-title {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.side-list-item:hover .side-list-title {
    color: var(--purple-600);
}

.side-list-date {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.side-list-empty {
    font-size: 14px;
    color: var(--text-muted);
    text-align: center;
    padding: 24px 0;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    background: var(--bg-page);
    border: 1px solid var(--border-light);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-body);
    transition: all 0.2s ease;
}

.tag-pill:hover {
    background: var(--purple-100);
    border-color: var(--purple-600);
    color: var(--purple-700);
}

.side-card-img {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 16px;
}

.side-card-img img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.side-card-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.side-card .btn {
    width: 100%;
}

/* ===================== 移动端相关推荐 ===================== */
.mobile-recommend {
    display: none;
    padding: 0 24px 48px;
}

.mobile-recommend h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 16px;
}

.mobile-recommend-scroll {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.mobile-recommend-card {
    flex: 0 0 240px;
    scroll-snap-align: start;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    background: var(--bg-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.mobile-recommend-card:active {
    transform: scale(0.97);
}

.mobile-recommend-card img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 0;
}

.mobile-recommend-card .rec-body {
    padding: 14px 16px;
}

.mobile-recommend-card .rec-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-heading);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.mobile-recommend-card .rec-date {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* ===================== CTA 条 ===================== */
.cta-band {
    background: linear-gradient(120deg, var(--ink-900), var(--ink-800) 55%, var(--purple-700));
    position: relative;
    overflow: hidden;
    padding: 72px 0;
    text-align: center;
}

.cta-band::before {
    content: "";
    position: absolute;
    top: -80px;
    left: 10%;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(108, 62, 245, 0.25);
    filter: blur(80px);
}

.cta-band::after {
    content: "";
    position: absolute;
    right: 8%;
    bottom: -100px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(14, 165, 233, 0.2);
    filter: blur(70px);
}

.cta-band .container {
    position: relative;
    z-index: 1;
}

.cta-band h2 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
    line-height: 1.3;
}

.cta-band p {
    font-size: 16px;
    color: rgba(255,255,255,0.75);
    max-width: 520px;
    margin: 0 auto 32px;
}

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

/* ===================== 页脚 ===================== */
.site-footer {
    background: var(--ink-900);
    padding: 64px 0 0;
    color: rgba(255,255,255,0.75);
}

.site-footer .container {
    max-width: var(--container-w);
}

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

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255,255,255,0.60);
    margin-top: 16px;
    max-width: 280px;
}

.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.25s ease;
}

.social-icon:hover {
    background: var(--purple-600);
    transform: translateY(-2px);
}

.social-icon svg {
    width: 18px;
    height: 18px;
    fill: #fff;
}

.footer-col h3 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col ul a {
    display: inline-block;
    font-size: 14px;
    color: rgba(255,255,255,0.60);
    transition: color 0.2s ease, padding-left 0.2s ease;
    padding-left: 0;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.40);
}

/* ===================== 回顶按钮 ===================== */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.80);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 900;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all 0.3s ease;
    backdrop-filter: blur(8px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--purple-600);
    transform: translateY(-3px);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
    .article-grid {
        grid-template-columns: minmax(0, 1fr);
        max-width: 760px;
    }

    .article-sidebar {
        display: none;
    }

    .mobile-recommend {
        display: block;
    }

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

@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .header-cta {
        display: none;
    }

    .header-inner {
        height: 64px;
    }

    .brand-text {
        font-size: 17px;
    }

    .brand-icon {
        width: 34px;
        height: 34px;
        font-size: 16px;
    }

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

    .article-title {
        font-size: 28px;
    }

    .article-body-wrap {
        padding: 24px 20px;
        border-radius: var(--radius-md);
    }

    .article-body {
        font-size: 15px;
        line-height: 1.75;
    }

    .article-body p {
        font-size: 15px;
    }

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

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

    .post-nav {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .cta-band {
        padding: 56px 0;
    }

    .cta-band h2 {
        font-size: 24px;
    }

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

@media (max-width: 520px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .brand-text {
        font-size: 16px;
    }

    .breadcrumb {
        font-size: 13px;
        margin-bottom: 14px;
    }

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

    .article-meta {
        gap: 8px 12px;
    }

    .mobile-recommend {
        padding: 0 16px 40px;
    }

    .back-to-top {
        right: 16px;
        bottom: 16px;
    }
}

/* roulang page: category3 */
:root {
            --primary: #6C3EF5;
            --primary-dark: #4B2BC4;
            --primary-light: rgba(108, 62, 245, 0.08);
            --primary-light-hover: rgba(108, 62, 245, 0.16);
            --accent: #FF6B2C;
            --accent-dark: #E55A1F;
            --ink: #0F172A;
            --ink-light: #1E1B4B;
            --cyan: #0EA5E9;
            --bg: #F6F7FB;
            --card: #FFFFFF;
            --text: #111827;
            --text-body: #374151;
            --text-muted: #9CA3AF;
            --border: #EDE9FE;
            --radius-lg: 20px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 12px 32px rgba(76, 29, 149, 0.10);
            --transition: all 0.3s ease;
            --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-num: "Barlow Condensed", "DIN Alternate", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body.no-scroll {
            overflow: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button {
            font-family: var(--font-cn);
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: var(--font-cn);
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 2;
        }
        .section {
            padding: 96px 0;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .section-tag::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-pill);
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            line-height: 1;
            gap: 8px;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 107, 44, 0.25);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 107, 44, 0.35);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-ghost {
            background: var(--primary-light);
            color: var(--primary);
            border: 1px solid transparent;
        }
        .btn-ghost:hover {
            background: var(--primary-light-hover);
            color: var(--primary-dark);
            transform: none;
        }
        .btn-dark {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .btn-dark:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }
        .btn-lg {
            height: 56px;
            padding: 0 36px;
            font-size: 17px;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            color: var(--primary);
            border-bottom: 1px solid var(--primary);
            padding-bottom: 2px;
            font-size: 15px;
        }
        .text-link:hover {
            color: var(--primary-dark);
            border-bottom-color: transparent;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
            line-height: 1.6;
        }
        .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
        }
        .badge-success {
            background: rgba(16, 185, 129, 0.12);
            color: #10B981;
        }
        .badge-warning {
            background: rgba(255, 107, 44, 0.12);
            color: var(--accent);
        }
        .badge-danger {
            background: rgba(239, 68, 68, 0.12);
            color: #EF4444;
        }
        .badge-muted {
            background: rgba(156, 163, 175, 0.12);
            color: var(--text-muted);
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
            height: 72px;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(15, 23, 42, 0.15);
        }
        .site-header.scrolled {
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, #4B2BC4 100%);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(108, 62, 245, 0.4);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 auto;
        }
        .main-nav .nav-link {
            display: inline-flex;
            align-items: center;
            height: 44px;
            padding: 0 18px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            border-radius: var(--radius-pill);
            position: relative;
            transition: var(--transition);
        }
        .main-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .main-nav .nav-link.active {
            color: #fff;
            font-weight: 600;
            background: rgba(108, 62, 245, 0.25);
        }
        .main-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: var(--radius-pill);
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .nav-cta {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-sm);
            z-index: 1002;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(160deg, #0F172A 0%, #1E1B4B 100%);
            z-index: 1100;
            padding: 100px 32px 32px;
            overflow-y: auto;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .mobile-drawer.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-drawer .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-drawer .drawer-nav a {
            display: block;
            font-size: 24px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.8);
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .mobile-drawer .drawer-nav a:hover,
        .mobile-drawer .drawer-nav a.active {
            color: #fff;
            border-bottom-color: var(--primary);
        }
        .mobile-drawer .drawer-cta {
            margin-top: 32px;
            width: 100%;
        }
        .category-hero {
            padding-top: 168px;
            padding-bottom: 80px;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(108, 62, 245, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: 30%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero-inner {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
            align-items: center;
        }
        .category-hero-text {
            position: relative;
            z-index: 2;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 6px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            margin-bottom: 24px;
        }
        .hero-tag .pulse-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 107, 44, 0.5);
            }
            50% {
                box-shadow: 0 0 0 4px rgba(255, 107, 44, 0);
            }
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 .grad {
            background: linear-gradient(135deg, var(--primary) 0%, #1E1B4B 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .category-hero-text p {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .category-hero-media {
            position: relative;
            z-index: 2;
        }
        .category-hero-media img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .issue-types {
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 96px 0;
        }
        .issue-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .issue-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .issue-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--cyan));
            opacity: 0;
            transition: var(--transition);
        }
        .issue-card:hover {
            border-color: rgba(108, 62, 245, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .issue-card:hover::before {
            opacity: 1;
        }
        .issue-card.featured {
            background: linear-gradient(145deg, #F9F7FF 0%, #FFFFFF 60%);
        }
        .issue-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .issue-icon svg {
            width: 26px;
            height: 26px;
            stroke: var(--primary);
            fill: none;
            stroke-width: 1.8;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .issue-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .issue-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .issue-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .issue-meta .count {
            font-family: var(--font-num);
            font-size: 15px;
            font-weight: 700;
            color: var(--accent);
        }
        .process-section {
            background: linear-gradient(145deg, #0F172A 0%, #1E1B4B 100%);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: '';
            position: absolute;
            top: 50%;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(108, 62, 245, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            transform: translateY(-50%);
        }
        .process-section .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }
        .process-section .section-tag::before {
            background: var(--accent);
        }
        .process-section .section-head h2 {
            color: #fff;
        }
        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.6);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
            z-index: 1;
        }
        .step-item {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
        }
        .step-item::after {
            content: '→';
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: rgba(255, 255, 255, 0.25);
            z-index: 2;
        }
        .step-item:last-child::after {
            display: none;
        }
        .step-item:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(108, 62, 245, 0.5);
        }
        .step-num {
            font-family: var(--font-num);
            font-size: 40px;
            font-weight: 700;
            background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.5) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            margin-bottom: 16px;
            line-height: 1;
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
        }
        .step-time {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--accent);
            margin-top: 16px;
            background: rgba(255, 107, 44, 0.12);
            padding: 4px 10px;
            border-radius: var(--radius-pill);
        }
        .scenarios-section {
            padding: 96px 0;
            background: var(--bg);
        }
        .scenarios-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 24px;
            align-items: stretch;
        }
        .scenario-main {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .scenario-main:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(108, 62, 245, 0.3);
        }
        .scenario-main img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .scenario-body {
            padding: 28px;
            flex: 1;
        }
        .scenario-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 14px 0 10px;
        }
        .scenario-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .scenario-body ul {
            display: grid;
            gap: 8px;
        }
        .scenario-body ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }
        .scenario-body ul li::before {
            content: '';
            flex-shrink: 0;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            margin-top: 8px;
        }
        .scenario-side {
            display: grid;
            gap: 20px;
            grid-template-rows: 1fr 1fr;
        }
        .scenario-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(108, 62, 245, 0.3);
        }
        .scenario-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
        }
        .scenario-card .link-row {
            margin-top: 16px;
        }
        .checklist-section {
            padding: 96px 0;
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .checklist-content {
            display: grid;
            grid-template-columns: 0.85fr 1.15fr;
            gap: 56px;
            align-items: center;
        }
        .checklist-text h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .checklist-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.75;
        }
        .checklist-list {
            display: grid;
            gap: 12px;
        }
        .checklist-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            transition: var(--transition);
        }
        .checklist-list li:hover {
            border-color: rgba(108, 62, 245, 0.3);
            background: #F9F7FF;
        }
        .check-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--primary-light);
            position: relative;
            margin-top: 2px;
        }
        .check-icon::after {
            content: '';
            position: absolute;
            top: 5px;
            left: 7px;
            width: 5px;
            height: 9px;
            border: solid var(--primary);
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }
        .faq-section {
            padding: 96px 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: rgba(108, 62, 245, 0.45);
            background: linear-gradient(145deg, #F9F7FF 0%, #FFFFFF 100%);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            position: relative;
            transition: var(--transition);
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--primary);
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 12px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 12px;
            transition: var(--transition);
        }
        .faq-item.active .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-item.active .faq-icon {
            background: var(--primary);
        }
        .faq-item.active .faq-icon::before {
            background: #fff;
        }
        .faq-answer {
            display: none;
            padding: 0 28px 24px;
            border-left: 3px solid var(--primary);
            margin-left: 28px;
            margin-right: 28px;
            margin-bottom: 20px;
            background: rgba(108, 62, 245, 0.02);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            padding-top: 16px;
        }
        .cta-band {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #7C3AED 100%);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.06) 70%);
            pointer-events: none;
        }
        .cta-band::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .site-footer {
            background: #0F172A;
            padding: 80px 0 32px;
            position: relative;
        }
        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(108, 62, 245, 0.4), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 56px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 300px;
        }
        .footer-brand .brand-text {
            font-size: 19px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 20px;
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .social-icon svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }
        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            display: grid;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            display: inline-block;
        }
        .footer-col ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: #94A3B8;
        }
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(15, 23, 42, 0.75);
            color: #fff;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            background: var(--primary);
            transform: translateY(-2px);
        }
        .back-top:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .skeleton {
            background: linear-gradient(90deg, #F6F7FB 25%, #EDE9FE 50%, #F6F7FB 75%);
            background-size: 200% 100%;
            animation: shimmer 1.2s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes shimmer {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }
        .list-empty {
            text-align: center;
            padding: 48px 24px;
            background: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
        }
        .list-empty-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }
        .list-empty p {
            color: var(--text-muted);
            font-size: 15px;
        }
        @media (max-width: 1024px) {
            .section {
                padding: 80px 0;
            }
            .issue-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .step-item::after {
                display: none;
            }
            .category-hero-inner {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
            .scenario-side {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .checklist-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .main-nav {
                gap: 0;
            }
            .main-nav .nav-link {
                padding: 0 12px;
                font-size: 14px;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 64px 0;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header {
                height: 64px;
            }
            .header-inner {
                height: 64px;
                gap: 12px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .main-nav {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .category-hero {
                padding-top: 120px;
                padding-bottom: 48px;
            }
            .category-hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 30px;
                line-height: 1.3;
            }
            .category-hero-text p {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .category-hero-media img {
                aspect-ratio: 16/10;
            }
            .issue-types {
                padding: 64px 0;
            }
            .issue-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .issue-card {
                padding: 24px 20px;
            }
            .process-section {
                padding: 64px 0;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-item {
                padding: 24px 20px;
            }
            .scenarios-section {
                padding: 64px 0;
            }
            .scenario-body {
                padding: 20px;
            }
            .scenario-side {
                grid-template-columns: 1fr;
            }
            .checklist-section {
                padding: 64px 0;
            }
            .checklist-list li {
                padding: 16px;
                font-size: 14px;
            }
            .faq-section {
                padding: 64px 0;
            }
            .faq-question {
                padding: 18px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px 18px;
                margin: 0 16px 16px;
            }
            .cta-band {
                padding: 64px 0;
            }
            .cta-inner h2 {
                font-size: 28px;
            }
            .cta-inner p {
                font-size: 15px;
                margin-bottom: 24px;
            }
            .cta-inner .btn {
                width: 100%;
                max-width: 360px;
            }
            .site-footer {
                padding: 56px 0 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .back-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head p {
                font-size: 15px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #6C3EF5;
  --primary-dark: #4B2BC4;
  --primary-light: rgba(108, 62, 245, 0.08);
  --secondary: #0F172A;
  --accent: #0EA5E9;
  --cta: #FF6B2C;
  --cta-dark: #E55A1F;
  --bg: #F6F7FB;
  --card: #FFFFFF;
  --text: #111827;
  --text-2: #374151;
  --text-3: #9CA3AF;
  --border: #EDE9FE;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-hover: 0 12px 32px rgba(76, 29, 149, 0.10);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-num: "Barlow Condensed", "DIN Alternate", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -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 var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn-cta {
  background: var(--cta);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 107, 44, 0.3);
}
.btn-cta:hover {
  background: var(--cta-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 44, 0.4);
}
.btn-cta:active { transform: translateY(0); }
.btn-lg { height: 52px; padding: 0 34px; font-size: 17px; }
.btn-text {
  color: var(--primary);
  font-weight: 600;
  background: transparent;
  padding: 0;
  height: auto;
}
.btn-text:hover { color: var(--primary-dark); text-decoration: underline; text-underline-offset: 4px; }
.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.22); }

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(135deg, #0F172A, #1E1B4B);
  height: 72px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}
.brand-text { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  transition: all 0.24s ease;
}
.nav-link:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #8B5CF6);
  box-shadow: 0 4px 16px rgba(108, 62, 245, 0.4);
}
.btn-login {
  background: var(--cta);
  color: #fff;
  height: 42px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.btn-login:hover {
  background: var(--cta-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 44, 0.4);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  display: block;
}

/* 移动抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  height: 100vh;
  background: linear-gradient(180deg, #0F172A, #1E1B4B);
  z-index: 200;
  padding: 24px;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}
.mobile-drawer.open { right: 0; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.drawer-close {
  font-size: 28px;
  color: #fff;
  align-self: flex-end;
  padding: 4px 8px;
}
.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}
.mobile-nav-link {
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  font-weight: 500;
  transition: all 0.2s;
}
.mobile-nav-link:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }
.mobile-nav-link.active { background: var(--primary); color: #fff; }
.mobile-login-btn { margin-top: auto; }

/* 分类 Hero */
.cat-hero {
  padding: 80px 0;
  background: linear-gradient(135deg, #F6F7FB 0%, #EDE9FE 50%, #DDD6FE 100%);
  border-bottom: 1px solid var(--border);
}
.cat-hero-inner {
  display: flex;
  align-items: center;
  gap: 56px;
}
.cat-hero-content { flex: 1.1; }
.cat-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(108, 62, 245, 0.12);
  color: var(--primary);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.cat-hero h1 {
  font-size: clamp(32px, 4vw, 44px);
  line-height: 1.3;
  font-weight: 700;
  margin: 20px 0 16px;
  color: var(--text);
}
.cat-hero-desc {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 28px;
}
.cat-hero-actions { display: flex; align-items: center; gap: 24px; }
.cat-hero-image {
  flex: 0.9;
  position: relative;
}
.cat-hero-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px rgba(76, 29, 149, 0.18);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.hero-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
}

/* 通用 Section */
.section { padding: 96px 0; }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.section-head p { font-size: 16px; color: var(--text-2); }

/* 说明区 */
.intro-section { background: var(--card); }
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
}
.intro-main h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 20px;
}
.intro-main p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-2);
  margin-bottom: 16px;
}
.intro-aside {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-lg);
  padding: 28px;
  color: #fff;
  align-self: start;
}
.aside-card h3 { font-size: 18px; margin-bottom: 16px; }
.aside-card ul { display: flex; flex-direction: column; gap: 10px; }
.aside-card li {
  padding-left: 20px;
  position: relative;
  font-size: 14px;
  line-height: 1.6;
}
.aside-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
}

/* 关键信息卡 */
.info-section { background: var(--bg); }
.info-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.info-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(108, 62, 245, 0.4);
}
.info-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.info-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.info-card p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* 功能模块 */
.feature-section {
  background: linear-gradient(rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.96)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
}
.feature-row {
  display: flex;
  align-items: center;
  gap: 56px;
  padding: 40px 0;
}
.feature-row + .feature-row { border-top: 1px solid rgba(255, 255, 255, 0.08); }
.feature-row.flip { flex-direction: row-reverse; }
.feature-content { flex: 1; }
.feature-label {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 107, 44, 0.2);
  color: var(--cta);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.feature-content h2 { font-size: 28px; font-weight: 700; margin-bottom: 16px; }
.feature-content p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 20px;
}
.feature-content ul { display: flex; flex-direction: column; gap: 10px; }
.feature-content li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}
.feature-content li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cta);
  font-weight: 700;
}
.feature-visual { flex: 1; }
.feature-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  aspect-ratio: 16 / 10;
  object-fit: cover;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

/* 场景 */
.scenarios-section { background: var(--bg); }
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.scenario-card.primary-card {
  background: linear-gradient(160deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: #fff;
}
.scenario-num {
  font-family: var(--font-num);
  font-size: 40px;
  font-weight: 700;
  color: var(--primary);
  opacity: 0.2;
  margin-bottom: 16px;
}
.primary-card .scenario-num { color: #fff; opacity: 0.5; }
.scenario-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.scenario-card p { font-size: 14px; line-height: 1.7; color: var(--text-2); }
.primary-card p { color: rgba(255, 255, 255, 0.85); }

/* 流程 */
.steps-section { background: var(--card); }
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-item {
  padding: 32px 24px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg);
  border: 1px solid var(--border);
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.step-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.step-item p { font-size: 14px; color: var(--text-2); line-height: 1.7; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-item.open {
  border-color: rgba(108, 62, 245, 0.4);
  background: rgba(108, 62, 245, 0.04);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  text-align: left;
}
.faq-icon {
  color: var(--primary);
  font-size: 22px;
  font-weight: 400;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer p {
  padding: 0 24px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-2);
  border-left: 3px solid var(--primary);
  margin-left: 24px;
}

/* CTA 区块 */
.cta-section { background: var(--card); }
.cta-box {
  border-radius: 24px;
  background: linear-gradient(135deg, #0F172A, #1E1B4B);
  color: #fff;
  text-align: center;
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(108, 62, 245, 0.25);
  filter: blur(60px);
}
.cta-box h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; position: relative; }
.cta-box p { font-size: 15px; color: rgba(255, 255, 255, 0.8); margin-bottom: 28px; position: relative; }
.cta-actions { display: flex; justify-content: center; gap: 16px; position: relative; }

/* 相关列表 */
.related-section { background: var(--bg); }
.related-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.related-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: all 0.3s ease;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(108, 62, 245, 0.3);
}
.related-thumb {
  width: 160px;
  height: 100px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-info h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.related-info a { color: var(--text); transition: color 0.2s; }
.related-info a:hover { color: var(--primary); }
.related-info p { font-size: 14px; color: var(--text-2); line-height: 1.6; }

/* 页脚 */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand a { color: #fff; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 280px;
}
.footer-social { display: flex; gap: 8px; margin-top: 20px; }
.social-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.social-icon:hover { background: var(--primary); transform: translateY(-2px); }
.social-icon svg { width: 18px; height: 18px; fill: #fff; }
.footer-col h3 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: #94A3B8; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: #94A3B8;
}

/* 回顶按钮 */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.8);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 99;
  font-size: 20px;
  line-height: 1;
}
.scroll-top:hover { background: var(--primary); }

/* 响应式 */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .intro-grid { grid-template-columns: 1fr; }
  .intro-aside { width: 100%; }
  .info-cards { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cat-hero-inner { flex-direction: column; align-items: flex-start; gap: 40px; }
  .cat-hero-image { width: 100%; max-width: 560px; }
  .feature-row, .feature-row.flip { flex-direction: column; gap: 32px; }
  .feature-content, .feature-visual { width: 100%; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .main-nav, .btn-login { display: none; }
  .nav-toggle { display: flex; }
  .section { padding: 64px 0; }
  .cat-hero { padding: 48px 0; }
  .cat-hero h1 { font-size: 32px; }
  .cat-hero-desc { font-size: 16px; }
  .cat-hero-actions { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-head h2 { font-size: 26px; }
  .section-head { margin-bottom: 40px; }
  .info-cards { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .related-card { flex-direction: column; align-items: flex-start; }
  .related-thumb { width: 100%; height: 160px; }
  .cta-box { padding: 40px 24px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .btn-ghost, .btn-cta { width: 100%; }
  .info-card p,
  .scenario-card p,
  .step-item p,
  .related-info p { font-size: 15px; }
}