/* roulang page: index */
:root {
    --primary: #f5b73e;
    --primary-rgb: 245, 183, 62;
    --primary-dark: #d9951a;
    --accent: #4cc9f0;
    --accent-rgb: 76, 201, 240;
    --bg-deep: #070b14;
    --bg-body: #0b1220;
    --bg-card: #111c2f;
    --bg-card-2: #16263d;
    --border-card: #1e3350;
    --border-light: rgba(255, 255, 255, 0.08);
    --text-hi: #f1f5f9;
    --text-body: #c3cfdd;
    --text-muted: #7c8aa5;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 22px 52px rgba(0, 0, 0, 0.45);
    --shadow-glow: 0 0 0 3px rgba(var(--primary-rgb), 0.18);
    --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --header-h: 76px;
}

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

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}

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

button,
input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
    background: #24334a;
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #33466a;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

::selection {
    background: rgba(var(--primary-rgb), 0.3);
    color: #fff;
}

/* ========== Header / Nav ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 18, 32, 0.88);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: var(--header-h);
    padding-top: 10px;
    padding-bottom: 10px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-weight: 800;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0b1220;
    font-size: 20px;
    font-weight: 900;
    box-shadow: 0 8px 22px rgba(var(--primary-rgb), 0.35);
    transition: transform .3s ease;
    flex-shrink: 0;
}

.logo:hover .logo-icon {
    transform: rotate(-8deg) scale(1.05);
}

.logo-text {
    font-size: 21px;
    font-weight: 800;
    color: var(--text-hi);
    letter-spacing: 1px;
    white-space: nowrap;
}

.logo-text em {
    font-style: normal;
    color: var(--primary);
}

.header-search {
    flex: 1;
    max-width: 540px;
    margin: 0 auto;
    position: relative;
}

.search-form {
    position: relative;
    width: 100%;
}

.search-form input {
    width: 100%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    padding: 12px 56px 12px 22px;
    color: var(--text-hi);
    font-size: 14px;
    transition: border-color .3s, box-shadow .3s, background .3s;
}

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

.search-form input:focus {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    background: rgba(255, 255, 255, 0.09);
}

.search-form input::-webkit-search-cancel-button {
    -webkit-appearance: none;
}

.search-form button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    color: #0b1220;
    font-size: 14px;
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-form button:hover {
    transform: translateY(-50%) scale(1.07);
    box-shadow: 0 6px 16px rgba(var(--primary-rgb), 0.4);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.nav-link {
    padding: 9px 18px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-body);
    white-space: nowrap;
    transition: all .25s ease;
    line-height: 1.4;
}

.nav-link:hover {
    color: var(--text-hi);
    background: rgba(255, 255, 255, 0.07);
}

.nav-link.active {
    color: #0b1220;
    background: var(--primary);
    font-weight: 700;
    box-shadow: 0 6px 16px rgba(var(--primary-rgb), 0.3);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--border-light);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-hi);
    font-size: 17px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .25s;
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu {
    display: none;
    background: rgba(11, 18, 32, 0.97);
    border-top: 1px solid var(--border-light);
    padding: 16px 0 24px;
}

.mobile-menu .mnav-link {
    display: block;
    padding: 13px 24px;
    font-size: 15px;
    color: var(--text-body);
    border-radius: 10px;
    margin: 4px 16px;
    transition: all .25s;
}

.mobile-menu .mnav-link:hover {
    color: var(--text-hi);
    background: rgba(255, 255, 255, 0.06);
}

.mobile-menu .mnav-link.active {
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
    font-weight: 700;
}

/* ========== Hero ========== */
.hero {
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    isolation: isolate;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 11, 20, 0.55) 0%, rgba(7, 11, 20, 0.78) 60%, var(--bg-body) 100%);
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 30%, rgba(var(--primary-rgb), 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    padding: 100px 24px 80px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-light);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 28px;
    backdrop-filter: blur(6px);
}

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

.hero h1 {
    font-size: clamp(38px, 5vw, 68px);
    font-weight: 900;
    color: var(--text-hi);
    line-height: 1.15;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero h1 span {
    background: linear-gradient(90deg, var(--primary), #ffe08a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: clamp(15px, 1.6vw, 18px);
    color: var(--text-body);
    max-width: 640px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.hero-search {
    max-width: 560px;
    margin: 0 auto 34px;
}

.hero .search-form input {
    background: rgba(7, 11, 20, 0.6);
    border-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    padding: 15px 60px 15px 24px;
    font-size: 15px;
}

.hero .search-form input:focus {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow), 0 12px 32px rgba(0, 0, 0, 0.35);
}

.hero .search-form button {
    width: 42px;
    height: 42px;
}

.hero-tags {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.hero-tags span {
    font-size: 13px;
    color: var(--text-muted);
}

.hero-tags a {
    font-size: 13px;
    color: var(--text-body);
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--border-light);
    padding: 5px 14px;
    border-radius: 50px;
    transition: all .25s;
}

.hero-tags a:hover {
    color: #0b1220;
    background: var(--primary);
    border-color: var(--primary);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    transition: all .3s ease;
    line-height: 1.4;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #0b1220;
    box-shadow: 0 10px 28px rgba(var(--primary-rgb), 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(var(--primary-rgb), 0.45);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-light);
    color: var(--text-hi);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 780px;
    margin: 60px auto 0;
    padding: 24px 20px;
    background: rgba(7, 11, 20, 0.55);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
}

.hero-stat {
    text-align: center;
    padding: 8px 4px;
}

.hero-stat-num {
    font-size: 30px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ========== Section common ========== */
.section {
    padding: 92px 0;
}

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.section-title {
    font-size: clamp(26px, 3.2vw, 38px);
    font-weight: 900;
    color: var(--text-hi);
    line-height: 1.3;
    margin-bottom: 14px;
    letter-spacing: 1px;
}

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

.section-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--primary);
    font-weight: 600;
    transition: gap .25s;
}

.section-link:hover {
    gap: 12px;
}

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

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: transform .35s, box-shadow .35s, border-color .35s;
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0;
    transition: opacity .35s;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(var(--primary-rgb), 0.35);
}

.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.18), rgba(var(--primary-rgb), 0.05));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    margin: 0 auto 22px;
    border: 1px solid rgba(var(--primary-rgb), 0.15);
    transition: transform .35s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-4deg);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 12px;
}

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

/* ========== Categories ========== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.category-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    transition: transform .4s, box-shadow .4s;
    display: block;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.category-card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.category-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .6s;
}

.category-card:hover .category-card-img img {
    transform: scale(1.07);
}

.category-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 20%, rgba(7, 11, 20, 0.85) 100%);
}

.category-card-body {
    padding: 24px 28px 28px;
    position: relative;
    margin-top: -8px;
}

.category-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(var(--primary-rgb), 0.14);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 50px;
    margin-bottom: 14px;
}

.category-card h3 {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-hi);
    margin-bottom: 10px;
}

.category-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
}

.category-card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.category-card-more i {
    transition: transform .25s;
}

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

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

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 26px;
    display: flex;
    flex-direction: column;
    transition: transform .35s, box-shadow .35s, border-color .35s;
    height: 100%;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(var(--primary-rgb), 0.25);
}

.news-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.news-badge {
    background: rgba(var(--primary-rgb), 0.12);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
}

.news-date {
    font-size: 12px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-date i {
    font-size: 11px;
}

.news-card-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-hi);
    line-height: 1.5;
    margin-bottom: 12px;
}

.news-card-title a {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.news-card-excerpt {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.news-card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    margin-top: auto;
}

.news-card-more i {
    transition: transform .25s;
}

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

.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg-card);
    border: 1px dashed var(--border-card);
    border-radius: var(--radius-lg);
    color: var(--text-muted);
    font-size: 16px;
}

/* ========== Process ========== */
.process-section {
    background: var(--bg-body);
}

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

.process-grid::before {
    content: '';
    position: absolute;
    top: 34px;
    left: 8%;
    right: 8%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border-card) 10%, var(--border-card) 90%, transparent);
    z-index: 0;
}

.process-item {
    text-align: center;
    padding: 0 16px;
    position: relative;
    z-index: 1;
}

.process-num {
    width: 68px;
    height: 68px;
    margin: 0 auto 22px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--bg-card-2), var(--bg-card));
    border: 1px solid var(--border-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
    color: var(--primary);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
    transition: transform .35s, box-shadow .35s;
}

.process-item:hover .process-num {
    transform: translateY(-4px);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.4), 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

.process-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 10px;
}

.process-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

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

.faq-wrap {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color .3s, box-shadow .3s;
}

.faq-item.open {
    border-color: rgba(var(--primary-rgb), 0.35);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-hi);
    text-align: left;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 12px;
    transition: background .25s;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.03);
}

.faq-question i {
    font-size: 14px;
    color: var(--primary);
    transition: transform .35s;
    flex-shrink: 0;
}

.faq-item.open .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease, padding .3s ease;
    padding: 0 24px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
}

.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 24px 22px;
}

/* ========== CTA ========== */
.cta-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 120px 0;
    isolation: isolate;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(7, 11, 20, 0.92) 20%, rgba(7, 11, 20, 0.75) 60%, rgba(7, 11, 20, 0.88) 100%);
    z-index: -1;
}

.cta-inner {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    color: var(--text-hi);
    line-height: 1.3;
    margin-bottom: 18px;
}

.cta-inner p {
    font-size: 16px;
    color: var(--text-body);
    margin-bottom: 36px;
    line-height: 1.8;
}

/* ========== Footer ========== */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-light);
    padding-top: 70px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 44px;
    padding-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 18px;
}

.footer-brand .logo-text {
    font-size: 19px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 300px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-hi);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 5px 0;
    transition: color .25s, padding-left .25s;
}

.footer-col a:hover {
    color: var(--primary);
    padding-left: 6px;
}

.footer-col p {
    font-size: 14px;
    color: var(--text-muted);
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-col p i {
    color: var(--primary);
    font-size: 13px;
    width: 18px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid var(--border-light);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
}

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

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

/* ========== Breadcrumb inner ========== */
.page-banner {
    position: relative;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    padding: 70px 0;
    isolation: isolate;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(7, 11, 20, 0.88), rgba(7, 11, 20, 0.65));
    z-index: -1;
}

.page-banner h1 {
    font-size: 36px;
    font-weight: 900;
    color: var(--text-hi);
    margin-bottom: 8px;
}

.page-banner p {
    font-size: 15px;
    color: var(--text-body);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 12px;
}

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

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

.breadcrumb i {
    font-size: 10px;
    color: var(--text-muted);
}

/* ========== Focus states a11y ========== */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    .header-search {
        max-width: 360px;
    }

    .nav-link {
        padding: 8px 12px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        gap: 14px;
    }

    .header-search {
        display: none;
    }

    .main-nav {
        display: none;
    }

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

    .mobile-menu.open {
        display: block;
    }

    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 70px 20px 50px;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
        margin-top: 40px;
    }

    .section {
        padding: 68px 0;
    }

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

    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

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

    .hero h1 {
        letter-spacing: 0;
    }

    .cta-section {
        padding: 84px 0;
    }

    .section-head {
        margin-bottom: 40px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }

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

    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 17px;
    }

    .hero h1 {
        font-size: 30px;
    }

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

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

    .hero-stat-num {
        font-size: 24px;
    }

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

    .hero-cta {
        width: 100%;
    }

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

    .new-card {
        padding: 20px;
    }
}

/* roulang page: category1 */
:root {
            --primary: #f59e0b;
            --primary-light: #fbbf24;
            --primary-dark: #d97706;
            --dark-bg: #0f1115;
            --deep-bg: #171a21;
            --card-bg: #1e222b;
            --border-dark: #2a2e37;
            --text-main: #f3f4f6;
            --text-muted: #9ca3af;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.5);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--dark-bg);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

        input {
            font-family: inherit;
        }

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

        /* Header Nav */
        .site-header {
            background: rgba(15, 17, 21, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-dark);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            min-height: 72px;
            padding: 12px 0;
        }

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

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0f1115;
            font-size: 18px;
            box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .logo-text em {
            font-style: normal;
            color: var(--primary);
        }

        .header-center {
            flex: 1;
            display: flex;
            justify-content: center;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: 50px;
            padding: 0 18px;
            height: 44px;
            width: 100%;
            max-width: 520px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }

        .search-box i {
            color: var(--text-muted);
            margin-right: 10px;
            font-size: 14px;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-main);
            font-size: 14px;
        }

        .search-box input::placeholder {
            color: #6b7280;
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all .2s ease;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(245, 158, 11, 0.12);
            border-color: rgba(245, 158, 11, 0.25);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid var(--border-dark);
            color: var(--text-main);
            font-size: 18px;
            justify-content: center;
            align-items: center;
            flex-shrink: 0;
        }

        /* Hero Banner */
        .page-hero {
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            padding: 100px 0 90px;
            margin-bottom: 60px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 17, 21, 0.92) 20%, rgba(15, 17, 21, 0.72) 60%, rgba(15, 17, 21, 0.5) 100%);
        }

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

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

        .page-breadcrumb a {
            color: var(--text-muted);
        }

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

        .page-breadcrumb i {
            font-size: 12px;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-hero h1 span {
            color: var(--primary);
        }

        .page-hero p {
            font-size: 16px;
            color: rgba(243, 244, 246, 0.85);
            max-width: 660px;
            line-height: 1.8;
        }

        .hero-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 24px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--primary-light);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
        }

        /* Section Common */
        .section {
            padding: 60px 0;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .section-eyebrow {
            display: inline-block;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 680px;
            line-height: 1.8;
        }

        .section-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
        }

        .section-link:hover {
            color: var(--primary-light);
        }

        .section-link i {
            font-size: 13px;
            transition: transform .2s;
        }

        .section-link:hover i {
            transform: translateX(4px);
        }

        /* Cards */
        .entry-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .entry-card {
            background: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all .3s ease;
            position: relative;
            overflow: hidden;
        }

        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0;
            transition: opacity .3s;
        }

        .entry-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, 0.4);
            box-shadow: var(--shadow-hover);
        }

        .entry-card:hover::before {
            opacity: 1;
        }

        .entry-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(245, 158, 11, 0.12);
            color: var(--primary);
            margin-bottom: 18px;
        }

        .entry-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

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

        .entry-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 30px;
            color: var(--primary-light);
            background: rgba(245, 158, 11, 0.08);
            border: 1px solid rgba(245, 158, 11, 0.2);
        }

        /* Feature Section with Image */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-card);
        }

        .feature-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .feature-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 17, 21, 0.4), transparent 50%);
        }

        .feature-badge {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 5;
            background: rgba(15, 17, 21, 0.8);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 30px;
            border: 1px solid rgba(245, 158, 11, 0.4);
        }

        .feature-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
        }

        .feature-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 28px;
        }

        .feature-list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            line-height: 1.6;
        }

        .feature-list-item i {
            color: var(--primary);
            font-size: 15px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #0f1115;
            font-weight: 700;
            font-size: 14px;
            padding: 12px 28px;
            border-radius: 50px;
            transition: all .25s ease;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.35);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border-dark);
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
            padding: 12px 24px;
            border-radius: 50px;
            transition: all .25s ease;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Guide Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--border-dark);
            position: relative;
            transition: all .3s;
        }

        .step-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 40px;
            font-weight: 900;
            color: rgba(245, 158, 11, 0.25);
            line-height: 1;
            margin-bottom: 16px;
            font-family: Georgia, serif;
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Compact Cards */
        .compact-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .compact-card {
            display: flex;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all .25s;
        }

        .compact-card:hover {
            border-color: rgba(245, 158, 11, 0.35);
            transform: translateX(4px);
        }

        .compact-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            background: rgba(245, 158, 11, 0.1);
            color: var(--primary);
            flex-shrink: 0;
        }

        .compact-body h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .compact-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .compact-body a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            color: var(--primary);
            margin-top: 8px;
            font-weight: 500;
        }

        .compact-body a:hover {
            color: var(--primary-light);
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: border-color .25s;
        }

        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.3);
        }

        .faq-item h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-light);
        }

        .faq-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* CTA */
        .cta-block {
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 60px;
            position: relative;
            overflow: hidden;
            text-align: center;
            margin-bottom: 60px;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 17, 21, 0.92), rgba(15, 17, 21, 0.75));
        }

        .cta-block .container {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .cta-block h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-block p {
            color: rgba(243, 244, 246, 0.85);
            font-size: 15px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        /* Notice Strip */
        .notice-strip {
            background: rgba(245, 158, 11, 0.06);
            border: 1px solid rgba(245, 158, 11, 0.15);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 14px;
            color: rgba(243, 244, 246, 0.8);
            margin-bottom: 24px;
        }

        .notice-strip i {
            color: var(--primary);
        }

        /* Footer */
        .site-footer {
            background: var(--deep-bg);
            border-top: 1px solid var(--border-dark);
            padding: 56px 0 0;
            margin-top: 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

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

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            transition: color .2s;
        }

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

        .footer-col p {
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col p i {
            color: var(--primary);
            font-size: 13px;
            width: 18px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(42, 46, 55, 0.6);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .entry-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 12px;
            }

            .header-center {
                order: 3;
                width: 100%;
            }

            .search-box {
                max-width: 100%;
            }

            .menu-toggle {
                display: flex;
                margin-left: auto;
            }

            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding-top: 12px;
                border-top: 1px solid var(--border-dark);
            }

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

            .nav-link {
                justify-content: flex-start;
                border-radius: 10px;
            }

            .page-hero {
                padding: 70px 0 60px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

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

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

            .feature-image img {
                height: 260px;
            }

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

            .cta-block {
                padding: 40px 24px;
            }

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

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .entry-cards-grid {
                grid-template-columns: 1fr;
            }

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

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

            .section {
                padding: 44px 0;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero p {
                font-size: 15px;
            }

            .btn-group {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-outline {
                justify-content: center;
            }
        }

/* roulang page: article */
:root {
    --bg-body: #0a0e17;
    --bg-deep: #05070d;
    --bg-surface: #101828;
    --bg-card: #141d30;
    --bg-elevated: #1b2640;
    --accent: #f0b13d;
    --accent-light: #ffcf6e;
    --accent-dark: #d19126;
    --cyan: #38bdf8;
    --text-primary: #f0f4fa;
    --text-secondary: #a0aec0;
    --text-muted: #6b7a90;
    --border: #1e2a40;
    --border-light: #2b3a56;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-full: 999px;
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
    --font-sans: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    background: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.7;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
}
button,
input {
    font-family: inherit;
}
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 28px;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(5, 7, 13, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}
.nav-wrap {
    display: flex;
    align-items: center;
    gap: 28px;
    min-height: 78px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.logo-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), #ff8c42);
    color: #0b0f1a;
    border-radius: 12px;
    font-size: 1.3rem;
    box-shadow: 0 0 24px rgba(240, 177, 61, 0.45);
}
.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}
.logo-text em {
    font-style: normal;
    color: var(--accent);
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}
.nav-link {
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.25s ease;
    white-space: nowrap;
}
.nav-link:hover {
    color: var(--accent);
    background: rgba(240, 177, 61, 0.1);
}
.nav-link.active {
    color: #0b0f1a;
    background: var(--accent);
    box-shadow: 0 4px 20px rgba(240, 177, 61, 0.35);
}
.nav-search {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 8px 18px;
    min-width: 220px;
    max-width: 320px;
    flex: 0 1 300px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.nav-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(240, 177, 61, 0.15);
}
.nav-search i {
    color: var(--text-muted);
    font-size: 0.9rem;
}
.nav-search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    width: 100%;
}
.nav-search input::placeholder {
    color: var(--text-muted);
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.92rem;
    padding: 10px 22px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    white-space: nowrap;
}
.btn-accent {
    background: linear-gradient(135deg, var(--accent), #f0952e);
    color: #0b0f1a;
    box-shadow: 0 4px 18px rgba(240, 177, 61, 0.3);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(240, 177, 61, 0.45);
    color: #0b0f1a;
}
.btn-outline {
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(240, 177, 61, 0.08);
}
.nav-cta {
    flex-shrink: 0;
    padding: 9px 20px;
    font-size: 0.88rem;
}
.mobile-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 10px;
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.25s ease;
}
.mobile-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.article-hero {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 110px 0 90px;
    isolation: isolate;
}
.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(5, 7, 13, 0.7) 0%, rgba(5, 7, 13, 0.88) 100%);
    z-index: -1;
}
.article-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top right, rgba(240, 177, 61, 0.15), transparent 55%);
    z-index: -1;
}
.article-hero-inner {
    position: relative;
    text-align: center;
    max-width: 860px;
}
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 28px;
}
.breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.25s ease;
}
.breadcrumb a:hover {
    color: var(--accent);
}
.breadcrumb i {
    font-size: 0.65rem;
    color: var(--text-muted);
}
.breadcrumb span {
    color: var(--accent);
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(240, 177, 61, 0.15);
    border: 1px solid rgba(240, 177, 61, 0.35);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    padding: 5px 14px;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
}
.article-hero h1 {
    font-size: 2.6rem;
    line-height: 1.25;
    font-weight: 800;
    margin-bottom: 22px;
    background: linear-gradient(135deg, #ffffff, #cfd7e3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    word-break: break-word;
}
.hero-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--text-secondary);
}
.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.hero-meta i {
    color: var(--accent);
}
.category-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(240, 177, 61, 0.18);
    border: 1px solid rgba(240, 177, 61, 0.4);
    color: var(--accent);
    font-weight: 600;
    border-radius: var(--radius-full);
    padding: 3px 14px;
    font-size: 0.78rem;
}
.article-layout {
    padding: 70px 0 60px;
    background: var(--bg-body);
}
.article-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 48px;
    align-items: start;
}
.article-main {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 42px;
    box-shadow: var(--shadow-md);
}
.article-card-head {
    margin-bottom: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
}
.article-card-head h1 {
    font-size: 1.85rem;
    line-height: 1.35;
    margin-bottom: 16px;
    color: var(--text-primary);
}
.meta-row {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.meta-row span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-row i {
    color: var(--accent);
}
.article-content {
    overflow-wrap: break-word;
}
.article-content h2 {
    font-size: 1.6rem;
    margin: 2.2rem 0 1rem;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
    color: var(--text-primary);
    line-height: 1.4;
}
.article-content h3 {
    font-size: 1.25rem;
    margin: 1.8rem 0 0.8rem;
    color: var(--text-primary);
}
.article-content p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.95;
}
.article-content ul,
.article-content ol {
    margin: 1rem 0 1.6rem 1.5rem;
    color: var(--text-secondary);
}
.article-content li {
    margin-bottom: 0.6rem;
}
.article-content img {
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
    box-shadow: var(--shadow-md);
}
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(240, 177, 61, 0.07);
    padding: 18px 24px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 1.8rem 0;
    color: var(--text-secondary);
    font-style: italic;
}
.article-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: opacity 0.25s ease;
}
.article-content a:hover {
    opacity: 0.8;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    overflow: hidden;
    border-radius: var(--radius-sm);
}
.article-content table th,
.article-content table td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}
.article-content table th {
    background: var(--bg-elevated);
    font-weight: 600;
    color: var(--text-primary);
}
.article-content table td {
    color: var(--text-secondary);
    background: var(--bg-card);
}
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.side-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.side-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    padding-bottom: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.side-card-title i {
    color: var(--accent);
}
.meta-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.meta-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.meta-list li span:first-child {
    color: var(--text-muted);
}
.meta-list li span:last-child {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
}
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.25s ease;
}
.tag:hover {
    background: rgba(240, 177, 61, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}
.side-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.side-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: var(--radius-sm);
    transition: background 0.25s ease;
}
.side-list-item:hover {
    background: rgba(255, 255, 255, 0.04);
}
.side-list-thumb {
    width: 58px;
    height: 46px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}
.side-list-info {
    min-width: 0;
}
.side-list-info h4 {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 4px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.side-list-info span {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}
.related-section {
    padding: 70px 0;
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
}
.section-head {
    text-align: center;
    margin-bottom: 42px;
}
.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(240, 177, 61, 0.12);
    padding: 5px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
}
.section-head h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.section-head p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 520px;
    margin: 0 auto;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-light);
}
.related-card img {
    width: 100%;
    height: 170px;
    object-fit: cover;
    border-radius: var(--radius-md);
}
.related-card h3 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.45;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.25s ease;
}
.related-card:hover h3 {
    color: var(--accent);
}
.related-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}
.related-card-meta i {
    color: var(--accent);
}
.not-found-section {
    padding: 100px 0;
    background: var(--bg-body);
    min-height: 420px;
    display: flex;
    align-items: center;
}
.not-found-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 56px 40px;
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
}
.not-found-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(240, 177, 61, 0.12);
    border: 1px solid rgba(240, 177, 61, 0.3);
    color: var(--accent);
    border-radius: 50%;
    font-size: 1.7rem;
}
.not-found-box h2 {
    font-size: 1.6rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.not-found-box p {
    color: var(--text-muted);
    margin-bottom: 26px;
}
.cta-section {
    position: relative;
    padding: 100px 0;
    background-size: cover;
    background-position: center;
    isolation: isolate;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(5, 7, 13, 0.94), rgba(5, 7, 13, 0.78));
    z-index: -1;
}
.cta-section::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: radial-gradient(ellipse at center, rgba(240, 177, 61, 0.12), transparent 60%);
}
.cta-inner {
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.35;
    background: linear-gradient(135deg, #ffffff, #d5dbe6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.cta-inner p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 30px;
    line-height: 1.8;
}
.cta-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid var(--border);
    padding: 80px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 50px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 28px;
}
.footer-brand .logo {
    margin-bottom: 18px;
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.75;
    max-width: 340px;
}
.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 700;
}
.footer-col a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 5px 0;
    transition: color 0.25s ease, padding-left 0.25s ease;
}
.footer-col a:hover {
    color: var(--accent);
    padding-left: 6px;
}
.footer-col p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-col p i {
    color: var(--accent);
    width: 16px;
    text-align: center;
}
.footer-bottom {
    text-align: center;
    padding-top: 14px;
}
.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.82rem;
}
.footer-bottom a {
    color: var(--text-secondary);
    transition: color 0.25s ease;
}
.footer-bottom a:hover {
    color: var(--accent);
}
@media (max-width: 1100px) {
    .nav-search {
        display: none;
    }
    .nav-wrap {
        gap: 16px;
    }
    .article-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .article-sidebar {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .nav-wrap {
        min-height: 68px;
    }
    .mobile-toggle {
        display: inline-flex;
    }
    .main-nav {
        position: fixed;
        top: 68px;
        right: 0;
        bottom: 0;
        width: min(320px, 85vw);
        background: var(--bg-surface);
        border-left: 1px solid var(--border);
        padding: 32px 20px;
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 99;
        justify-content: flex-start;
        box-shadow: var(--shadow-lg);
    }
    .nav-link {
        width: 100%;
        font-size: 1rem;
        padding: 12px 16px;
        border-radius: 10px;
    }
    .nav-cta {
        display: none;
    }
    .logo-text {
        font-size: 1.2rem;
    }
    body.nav-open .main-nav {
        transform: translateX(0);
    }
    .article-hero {
        padding: 80px 0 64px;
    }
    .article-hero h1 {
        font-size: 1.95rem;
    }
    .breadcrumb {
        flex-wrap: wrap;
    }
    .article-main {
        padding: 24px 18px;
    }
    .article-card-head h1 {
        font-size: 1.5rem;
    }
    .article-sidebar {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .cta-section {
        padding: 68px 0;
    }
    .cta-inner h2 {
        font-size: 1.7rem;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }
    .nav-search {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .hero-meta {
        gap: 10px;
        font-size: 0.8rem;
    }
    .article-hero h1 {
        font-size: 1.6rem;
    }
    .article-main {
        border-radius: 14px;
        padding: 20px 16px;
    }
    .meta-row {
        gap: 10px;
        font-size: 0.78rem;
    }
    .not-found-box {
        padding: 40px 22px;
    }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #06b6d4;
            --primary-soft: #22d3ee;
            --accent: #f59e0b;
            --bg-deep: #060912;
            --bg-body: #0b101c;
            --bg-card: #121826;
            --bg-card-hover: #182132;
            --border: rgba(255, 255, 255, 0.08);
            --text-main: #f1f5f9;
            --text-weak: #94a3b8;
            --radius: 1rem;
            --shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* ===== Header 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 9, 18, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header-main {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 1rem 0;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #06b6d4 0%, #0e7490 100%);
            color: #fff;
            font-size: 1.15rem;
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.35);
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            white-space: nowrap;
        }

        .logo-text em {
            font-style: normal;
            color: var(--primary-soft);
            margin-left: 0.15rem;
        }

        .header-search {
            flex: 1;
            max-width: 640px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            padding: 0.5rem 0.6rem 0.5rem 1.2rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .header-search:focus-within {
            border-color: rgba(6, 182, 212, 0.5);
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.12);
        }

        .header-search .search-icon {
            color: var(--text-weak);
            font-size: 0.9rem;
            margin-right: 0.7rem;
        }

        .header-search input {
            flex: 1;
            background: transparent;
            border: none;
            color: #f1f5f9;
            font-size: 0.95rem;
            min-width: 0;
        }

        .header-search input::placeholder {
            color: #64748b;
        }

        .header-search .search-btn {
            background: linear-gradient(135deg, #06b6d4, #0e7490);
            color: #fff;
            border-radius: 50px;
            padding: 0.45rem 1.3rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s, transform 0.2s;
            white-space: nowrap;
        }

        .header-search .search-btn:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

        .header-actions {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: #fbbf24;
            border-radius: 50px;
            padding: 0.5rem 1.3rem;
            font-size: 0.88rem;
            font-weight: 600;
            transition: all 0.3s;
            white-space: nowrap;
        }

        .btn-header:hover {
            background: rgba(245, 158, 11, 0.25);
            border-color: rgba(245, 158, 11, 0.6);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
        }

        /* 主导航 */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0 0 0.2rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            background: rgba(6, 9, 18, 0.9);
            border-radius: 0 0 12px 12px;
        }

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

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #94a3b8;
            font-size: 0.92rem;
            font-weight: 600;
            padding: 0.55rem 0.3rem;
            margin: 0 0.25rem 0.25rem;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color 0.25s, border-color 0.25s;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, #06b6d4, #22d3ee);
            border-radius: 2px;
            transform: scaleX(0);
            transition: transform 0.3s;
        }

        .nav-link:hover {
            color: #f1f5f9;
        }

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: #22d3ee;
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 5rem 1.25rem;
            background-image: linear-gradient(rgba(6, 9, 18, 0.8), rgba(6, 9, 18, 0.92)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            width: 100%;
        }

        .hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: rgba(6, 182, 212, 0.15);
            border: 1px solid rgba(6, 182, 212, 0.35);
            color: #22d3ee;
            border-radius: 50px;
            padding: 0.35rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 0.05em;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.8rem);
            font-weight: 900;
            line-height: 1.18;
            letter-spacing: -0.03em;
            color: #fff;
            margin-bottom: 1.2rem;
        }

        .hero h1 span {
            background: linear-gradient(135deg, #22d3ee, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.1rem;
            color: #cbd5e1;
            margin-bottom: 2rem;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-search {
            display: flex;
            align-items: center;
            max-width: 600px;
            margin: 0 auto 1.5rem;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 50px;
            padding: 0.6rem 0.6rem 0.6rem 1.4rem;
            backdrop-filter: blur(8px);
        }

        .hero-search i {
            color: #94a3b8;
            margin-right: 0.8rem;
        }

        .hero-search input {
            flex: 1;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
            min-width: 0;
        }

        .hero-search input::placeholder {
            color: #64748b;
        }

        .hero-search button {
            background: linear-gradient(135deg, #06b6d4, #0e7490);
            color: #fff;
            border-radius: 50px;
            padding: 0.6rem 1.8rem;
            font-weight: 700;
            font-size: 0.92rem;
            cursor: pointer;
            transition: opacity 0.3s, transform 0.2s;
            white-space: nowrap;
        }

        .hero-search button:hover {
            opacity: 0.88;
            transform: translateY(-1px);
        }

        .hero-meta {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            color: #94a3b8;
            font-size: 0.85rem;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: 4.5rem 0;
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 2.8rem;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #22d3ee;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }

        .section-head h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 0.8rem;
        }

        .section-head p {
            color: #94a3b8;
            font-size: 1rem;
        }

        /* ===== 攻略分类卡片 ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }

        .cat-card {
            position: relative;
            border-radius: 1.25rem;
            overflow: hidden;
            padding: 1.8rem 1.5rem;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform 0.35s, box-shadow 0.35s, border-color 0.35s;
            min-height: 220px;
            display: flex;
            flex-direction: column;
        }

        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(6, 182, 212, 0.3);
        }

        .cat-card .cat-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            background: rgba(6, 182, 212, 0.12);
            color: #22d3ee;
            margin-bottom: 1.2rem;
            transition: background 0.3s;
        }

        .cat-card:hover .cat-icon {
            background: rgba(6, 182, 212, 0.22);
        }

        .cat-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .cat-card p {
            color: #7c8ba1;
            font-size: 0.88rem;
            line-height: 1.6;
            margin-bottom: 1rem;
            flex: 1;
        }

        .cat-card .cat-link {
            color: #22d3ee;
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .cat-card .cat-link i {
            transition: transform 0.3s;
        }

        .cat-card:hover .cat-link i {
            transform: translateX(4px);
        }

        .cat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #06b6d4, #22d3ee, transparent);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .cat-card:hover::after {
            opacity: 1;
        }

        /* ===== 精选攻略卡片 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .guide-card {
            border-radius: 1.25rem;
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.45);
            border-color: rgba(6, 182, 212, 0.25);
        }

        .guide-card .cover-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #0d1520;
        }

        .guide-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .guide-card:hover .cover-wrap img {
            transform: scale(1.05);
        }

        .guide-card .badge {
            position: absolute;
            top: 0.9rem;
            left: 0.9rem;
            background: rgba(6, 9, 18, 0.75);
            backdrop-filter: blur(6px);
            color: #22d3ee;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            padding: 0.25rem 0.85rem;
            border: 1px solid rgba(6, 182, 212, 0.3);
        }

        .guide-card .card-body {
            padding: 1.3rem 1.4rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-card .card-body h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 0.6rem;
            transition: color 0.25s;
        }

        .guide-card:hover .card-body h3 {
            color: #22d3ee;
        }

        .guide-card .card-body p {
            color: #7c8ba1;
            font-size: 0.88rem;
            line-height: 1.65;
            margin-bottom: 1rem;
            flex: 1;
        }

        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: #64748b;
            font-size: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 0.85rem;
            margin-top: auto;
        }

        .guide-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }

        .guide-card .card-meta i {
            color: #22d3ee;
            opacity: 0.7;
        }

        /* ===== 学习路径 ===== */
        .path-section {
            background: linear-gradient(180deg, var(--bg-deep) 0%, #0d1322 100%);
        }

        .path-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
            margin-top: 1rem;
        }

        .path-item {
            position: relative;
            text-align: center;
            padding: 2rem 1.4rem;
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 1.25rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }

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

        .path-item .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 1rem;
            border-radius: 50%;
            background: linear-gradient(135deg, #06b6d4, #0e7490);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.3);
        }

        .path-item h3 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .path-item p {
            color: #7c8ba1;
            font-size: 0.86rem;
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(rgba(6, 9, 18, 0.88), rgba(6, 9, 18, 0.92)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

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

        .stat-item {
            text-align: center;
            padding: 2.2rem 1.2rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 1.25rem;
            backdrop-filter: blur(6px);
        }

        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: #22d3ee;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 0.4rem;
        }

        .stat-item .stat-label {
            color: #94a3b8;
            font-size: 0.92rem;
            font-weight: 500;
        }

        /* ===== 热门专题 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .topic-card {
            position: relative;
            border-radius: 1.25rem;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.75));
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
        }

        .topic-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: -1;
        }

        .topic-info {
            padding: 1.8rem;
            width: 100%;
        }

        .topic-info .topic-tag {
            display: inline-block;
            background: rgba(6, 182, 212, 0.2);
            color: #22d3ee;
            font-size: 0.78rem;
            font-weight: 700;
            border-radius: 50px;
            padding: 0.25rem 0.8rem;
            margin-bottom: 0.7rem;
            border: 1px solid rgba(6, 182, 212, 0.25);
        }

        .topic-info h3 {
            color: #fff;
            font-size: 1.35rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 0.5rem;
        }

        .topic-info p {
            color: #b0bccb;
            font-size: 0.9rem;
            line-height: 1.6;
            max-width: 480px;
        }

        .topic-info .topic-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            color: #7c8ba1;
            font-size: 0.8rem;
            margin-top: 0.8rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 1rem;
            margin-bottom: 0.85rem;
            overflow: hidden;
            transition: border-color 0.3s, box-shadow 0.3s;
        }

        .faq-item:hover {
            border-color: rgba(6, 182, 212, 0.25);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: #e2e8f0;
            font-size: 1rem;
            transition: color 0.3s;
            user-select: none;
        }

        .faq-item .faq-q:hover {
            color: #22d3ee;
        }

        .faq-item .faq-q i {
            color: #22d3ee;
            transition: transform 0.3s;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }

        .faq-item .faq-a {
            max-height: 0;
            padding: 0 1.5rem;
            overflow: hidden;
            color: #7c8ba1;
            font-size: 0.92rem;
            line-height: 1.75;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-a {
            max-height: 400px;
            padding-bottom: 1.3rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            overflow: hidden;
            padding: 4.5rem 0;
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.08), rgba(245, 158, 11, 0.06)), var(--bg-deep);
        }

        .cta-box {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 2rem;
            padding: 3.5rem 2.5rem;
            backdrop-filter: blur(10px);
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 900;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 1rem;
        }

        .cta-box p {
            color: #94a3b8;
            font-size: 1.05rem;
            margin-bottom: 2rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border-radius: 50px;
            padding: 0.75rem 2rem;
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.3s;
        }

        .btn-primary {
            background: linear-gradient(135deg, #06b6d4, #0e7490);
            color: #fff;
            box-shadow: 0 4px 20px rgba(6, 182, 212, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(6, 182, 212, 0.35);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(245, 158, 11, 0.45);
            color: #fbbf24;
        }

        .btn-outline:hover {
            background: rgba(245, 158, 11, 0.1);
            border-color: #fbbf24;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #060912;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 4rem 0 1.5rem;
            color: #94a3b8;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        .site-footer .footer-brand p {
            color: #7c8ba1;
            font-size: 0.92rem;
            line-height: 1.75;
            margin-top: 1rem;
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            position: relative;
            padding-bottom: 0.6rem;
        }

        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, #06b6d4, transparent);
            border-radius: 2px;
        }

        .site-footer .footer-col a,
        .site-footer .footer-col p {
            display: block;
            color: #7c8ba1;
            font-size: 0.88rem;
            margin-bottom: 0.6rem;
            transition: color 0.25s;
        }

        .site-footer .footer-col a:hover {
            color: #22d3ee;
        }

        .site-footer .footer-col p i {
            color: #22d3ee;
            margin-right: 0.5rem;
            opacity: 0.7;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }

        .site-footer .footer-bottom a {
            color: #22d3ee;
        }

        /* ===== 滚动动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

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

            .path-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }

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

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

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-main {
                flex-wrap: wrap;
                gap: 0.75rem;
            }

            .header-search {
                order: 3;
                width: 100%;
                max-width: 100%;
                margin-top: 0.25rem;
            }

            .header-actions .btn-header {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }

            .hero {
                min-height: 460px;
                padding: 3.5rem 1.25rem;
            }

            .hero h1 {
                font-size: 2.1rem;
            }

            .hero p {
                font-size: 0.98rem;
            }

            .section {
                padding: 3.5rem 0;
            }

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

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

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }

            .logo-text {
                font-size: 1.15rem;
            }

            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

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

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

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.75rem;
            }

            .stat-item .stat-num {
                font-size: 2rem;
            }

            .hero-search {
                flex-wrap: wrap;
                padding: 0.5rem;
            }

            .hero-search input {
                width: 100%;
                padding: 0.4rem 0.8rem;
            }

            .hero-search button {
                width: 100%;
                margin-top: 0.4rem;
            }

            .cta-box {
                padding: 2.2rem 1.4rem;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline {
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #3366ff;
            --color-primary-dark: #1e45f5;
            --color-accent: #ff9500;
            --color-bg-dark: #0a0e1a;
            --color-bg-card: #111827;
            --color-text-main: #1e2330;
            --color-text-weak: #6b7280;
            --color-border: #e5e7eb;
            --radius-card: 1rem;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.08);
            --trans: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--color-text-main);
            background: #f8fafc;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--trans);
        }

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            width: min(1200px, 92%);
            margin: 0 auto;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(10, 14, 26, 0.95);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--trans);
        }

        .header-inner {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 16px 0;
            position: relative;
        }

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

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #3366ff, #1a36cc);
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 0 20px rgba(51, 102, 255, 0.3);
        }

        .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .logo-text em {
            font-style: normal;
            color: var(--color-accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 10px;
            position: relative;
            transition: var(--trans);
        }

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

        .nav-link.active {
            color: #fff;
            background: rgba(51, 102, 255, 0.2);
            box-shadow: inset 0 0 0 1px rgba(51, 102, 255, 0.3);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .nav-search {
            position: relative;
            flex-shrink: 1;
            min-width: 200px;
        }

        .nav-search input {
            width: 100%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            color: #fff;
            font-size: 14px;
            padding: 8px 38px 8px 16px;
            transition: var(--trans);
        }

        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .nav-search input:focus {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(51, 102, 255, 0.6);
            box-shadow: 0 0 0 4px rgba(51, 102, 255, 0.15);
        }

        .nav-search i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
            pointer-events: none;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            color: #fff;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        /* ===== Hero ===== */
        .cat-hero {
            position: relative;
            padding: 120px 0 100px;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.94), rgba(26, 35, 52, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(51, 102, 255, 0.25), transparent 70%);
            pointer-events: none;
        }

        .cat-hero .hero-shape {
            position: absolute;
            bottom: -40px;
            left: 10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 149, 0, 0.07);
            filter: blur(40px);
            pointer-events: none;
        }

        .cat-hero-inner {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .cat-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(51, 102, 255, 0.15);
            border: 1px solid rgba(51, 102, 255, 0.3);
            color: #a8c0ff;
            font-size: 14px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
        }

        .cat-hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 0 0 20px;
        }

        .cat-hero h1 .highlight {
            background: linear-gradient(90deg, #ff9500, #ffb347);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .cat-hero p {
            font-size: 18px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 12px;
            transition: var(--trans);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, #3366ff, #1e45f5);
            color: #fff;
            box-shadow: 0 4px 20px rgba(51, 102, 255, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(51, 102, 255, 0.5);
        }

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

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-accent {
            background: linear-gradient(135deg, #ff9500, #ffb347);
            color: #0a0e1a;
            box-shadow: 0 4px 20px rgba(255, 149, 0, 0.3);
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(255, 149, 0, 0.45);
        }

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

        .section-alt {
            background: #fff;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #3366ff;
            background: rgba(51, 102, 255, 0.08);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin: 0 0 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-weak);
            line-height: 1.8;
            max-width: 640px;
            margin-bottom: 0;
        }

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

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

        .section-head.center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Cards Grid ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        /* ===== Entry Card ===== */
        .entry-card {
            background: #fff;
            border-radius: 16px;
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--trans);
            position: relative;
            overflow: hidden;
        }

        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #3366ff, #ff9500);
            opacity: 0;
            transition: var(--trans);
        }

        .entry-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
        }

        .entry-card:hover::before {
            opacity: 1;
        }

        .entry-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .entry-icon.blue {
            background: rgba(51, 102, 255, 0.12);
            color: #3366ff;
        }

        .entry-icon.orange {
            background: rgba(255, 149, 0, 0.12);
            color: #ff9500;
        }

        .entry-icon.green {
            background: rgba(16, 185, 129, 0.12);
            color: #10b981;
        }

        .entry-icon.purple {
            background: rgba(139, 92, 246, 0.12);
            color: #8b5cf6;
        }

        .entry-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .entry-card p {
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: #3366ff;
        }

        .card-link:hover {
            gap: 10px;
            color: #1e45f5;
        }

        /* ===== Feature Panel ===== */
        .feature-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-img-wrap {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
            position: relative;
        }

        .feature-img-wrap img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
        }

        .feature-list {
            display: grid;
            gap: 20px;
        }

        .feature-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .feature-item-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(51, 102, 255, 0.1);
            color: #3366ff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }

        .feature-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 6px;
        }

        .feature-item p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Data Panel ===== */
        .data-panel {
            background: linear-gradient(135deg, #0a0e1a 0%, #111827 60%, #1a2234 100%);
            border-radius: 24px;
            padding: 60px 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .data-panel::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(51, 102, 255, 0.3), transparent 70%);
            pointer-events: none;
        }

        .data-panel .section-title {
            color: #fff;
        }

        .data-panel .section-desc {
            color: rgba(255, 255, 255, 0.6);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 40px;
            position: relative;
            z-index: 2;
        }

        .stat-item {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            transition: var(--trans);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(51, 102, 255, 0.4);
        }

        .stat-num {
            font-size: 40px;
            font-weight: 900;
            background: linear-gradient(135deg, #fff, #a8c0ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }

        /* ===== Steps Timeline ===== */
        .steps-wrap {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .steps-wrap::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 20px;
            bottom: 20px;
            width: 2px;
            background: linear-gradient(180deg, #3366ff, #ff9500);
            opacity: 0.3;
        }

        .step-item {
            position: relative;
            display: flex;
            gap: 28px;
            padding: 20px 0 20px 0;
            align-items: flex-start;
        }

        .step-marker {
            position: relative;
            z-index: 2;
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid rgba(51, 102, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow-card);
        }

        .step-item:nth-child(1) .step-marker { color: #3366ff; }
        .step-item:nth-child(2) .step-marker { color: #ff9500; }
        .step-item:nth-child(3) .step-marker { color: #10b981; }
        .step-item:nth-child(4) .step-marker { color: #8b5cf6; }

        .step-content {
            background: #fff;
            border-radius: 16px;
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            flex: 1;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .step-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Content Cards ===== */
        .content-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: var(--trans);
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.12);
        }

        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

        .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.4));
        }

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(51, 102, 255, 0.92);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(8px);
        }

        .card-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 10px;
        }

        .card-body p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin: 0 0 16px;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: #9ca3af;
            border-top: 1px solid #f3f4f6;
            padding-top: 14px;
        }

        .card-meta i {
            font-size: 12px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid rgba(0, 0, 0, 0.06);
            overflow: hidden;
            transition: var(--trans);
        }

        .faq-item:hover {
            border-color: rgba(51, 102, 255, 0.3);
        }

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
        }

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

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: #3366ff;
            transition: var(--trans);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item .faq-body {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            position: relative;
            background: linear-gradient(135deg, rgba(10, 14, 26, 0.92), rgba(26, 35, 52, 0.9)), url('/assets/images/backpic/back-1.png') center/cover;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(26px, 3vw, 40px);
            font-weight: 800;
            margin: 0 0 16px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 560px;
            margin: 0 auto 32px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: #0a0e1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 24px;
            position: relative;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin: 20px 0 0;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 20px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--trans);
        }

        .footer-col a:hover {
            color: #ff9500;
            padding-left: 6px;
        }

        .footer-col p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin: 0 0 10px;
        }

        .footer-col p i {
            margin-right: 8px;
            color: #3366ff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: #ff9500;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 6px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }

        .breadcrumb a:hover {
            color: #ff9500;
        }

        .breadcrumb i {
            font-size: 10px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .header-inner {
                flex-wrap: wrap;
            }

            .nav-search {
                order: 3;
                width: 100%;
                min-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .cat-hero {
                padding: 80px 0 70px;
            }

            .grid-3,
            .grid-4,
            .grid-2 {
                grid-template-columns: 1fr;
            }

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

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

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

            .main-nav {
                order: 4;
                width: 100%;
                margin-left: 0;
                gap: 4px;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 4px;
                display: flex;
            }

            .nav-link {
                font-size: 14px;
                padding: 8px 14px;
                white-space: nowrap;
            }

            .data-panel {
                padding: 40px 24px;
            }

            .steps-wrap::before {
                left: 24px;
            }

            .step-marker {
                width: 48px;
                height: 48px;
                font-size: 16px;
            }

            .step-content {
                padding: 18px 20px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

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

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

            .cta-btns {
                flex-direction: column;
            }

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

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