/* roulang page: index */
:root {
    --primary: #CCFF00;
    --primary-dark: #B4E600;
    --primary-soft: rgba(204, 255, 0, 0.25);
    --accent: #FF7A00;
    --dark: #1C1D21;
    --dark-2: #25262B;
    --bg-light: #F7F6F3;
    --bg-white: #FFFFFF;
    --text-dark: #1A1A1A;
    --text-body: #3E3E3E;
    --text-light: #8A8A8A;
    --border: #E6E6E6;
    --radius-card: 16px;
    --radius-btn: 8px;
    --radius-badge: 999px;
    --radius-img: 12px;
    --shadow-card: 0 8px 24px rgba(28, 29, 33, 0.08);
    --shadow-btn: 0 4px 14px rgba(204, 255, 0, 0.35);
    --container-max: 1200px;
    --space-section: 84px;
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-en: "Inter", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-body);
    background: var(--bg-light);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color .3s ease;
}

ul, ol {
    list-style: none;
}

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

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

.row {
    max-width: var(--container-max);
    margin: 0 auto;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

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

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

.section-head .section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    background: var(--primary-soft);
    color: var(--text-dark);
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 12px;
}

.section-head h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 8px;
}

.section-head p {
    font-size: 15px;
    color: var(--text-light);
    max-width: 640px;
    margin: 0 auto;
}

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(28, 29, 33, 0.04);
}

.header-progress {
    height: 3px;
    background: var(--primary);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text .logo-dot {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    display: inline-block;
}

.main-nav ul {
    display: flex;
    gap: 4px;
}

.main-nav a {
    display: inline-block;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    border-radius: var(--radius-btn);
    position: relative;
    transition: color .3s ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 4px;
    width: 0;
    height: 2px;
    background: var(--primary-dark);
    transition: width .3s ease, left .3s ease;
}

.main-nav a:hover {
    color: var(--text-dark);
}

.main-nav a:hover::after {
    width: 60%;
    left: 20%;
}

.main-nav .active a {
    color: var(--text-dark);
    font-weight: 600;
}

.main-nav .active a::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

.main-nav .active a::after {
    width: 60%;
    left: 20%;
    background: var(--primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: var(--radius-btn);
    transition: all .3s ease;
    line-height: 1;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-dark);
    outline-offset: 3px;
}

.btn-download {
    height: 44px;
    padding: 0 22px;
    background: var(--primary);
    color: var(--text-dark);
    font-size: 15px;
    box-shadow: var(--shadow-btn);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(204, 255, 0, 0.45);
}

.btn-primary {
    height: 50px;
    padding: 0 28px;
    background: var(--primary);
    color: var(--text-dark);
    font-size: 16px;
    box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(204, 255, 0, 0.5);
}

.btn-outline {
    height: 50px;
    padding: 0 28px;
    background: transparent;
    color: var(--text-dark);
    font-size: 16px;
    border: 2px solid var(--text-dark);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--text-dark);
    background: var(--primary-soft);
    transform: translateY(-2px);
}

.btn-dark {
    height: 52px;
    padding: 0 30px;
    background: var(--primary);
    color: var(--text-dark);
    font-size: 16px;
    box-shadow: var(--shadow-btn);
}

.btn-dark:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(204, 255, 0, 0.4);
}

.btn-ghost {
    height: 52px;
    padding: 0 30px;
    background: transparent;
    color: var(--bg-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
    font-size: 16px;
}

.btn-ghost:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    align-items: center;
    border-radius: var(--radius-btn);
}

.hamburger span {
    width: 22px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all .3s ease;
}

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

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

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

/* ===== Hero ===== */
.hero-section {
    position: relative;
    background: var(--bg-light);
    overflow: hidden;
    padding: 80px 0 100px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-soft) 70%);
    clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
    z-index: 0;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--bg-light);
    clip-path: polygon(0 50%, 100% 0, 100% 100%, 0 100%);
    z-index: 1;
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.hero-text {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--dark);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: var(--radius-badge);
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-dark);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

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

.hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}

.hero-stats {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-stats .stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-body);
    background: var(--bg-white);
    padding: 8px 16px;
    border-radius: var(--radius-badge);
    border: 1px solid var(--border);
}

.hero-stats .stat-item i {
    color: var(--primary-dark);
    font-size: 15px;
}

.hero-device {
    position: relative;
    flex-shrink: 0;
}

.device-frame {
    width: 300px;
    height: 620px;
    background: var(--dark);
    border-radius: 36px;
    padding: 12px;
    position: relative;
    box-shadow: 0 20px 60px rgba(28, 29, 33, 0.18);
}

.device-frame::before {
    content: '';
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 22px;
    background: var(--dark);
    border-radius: 12px;
    z-index: 2;
}

.device-screen {
    width: 100%;
    height: 100%;
    border-radius: 28px;
    overflow: hidden;
    background: var(--bg-white);
}

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

.device-float-tag {
    position: absolute;
    background: var(--bg-white);
    border-radius: var(--radius-badge);
    box-shadow: var(--shadow-card);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 6px;
    animation: float 3s ease-in-out infinite;
}

.device-float-tag.t1 {
    top: 80px;
    left: -70px;
    animation-delay: 0s;
}

.device-float-tag.t2 {
    bottom: 140px;
    right: -50px;
    animation-delay: 1.2s;
}

.device-float-tag i {
    color: var(--accent);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===== Feature Cards ===== */
.feature-section {
    background: var(--bg-light);
    margin-top: -30px;
    position: relative;
    z-index: 3;
    padding-top: 110px;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-card);
    padding: 32px 28px;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    height: 100%;
    transition: transform .3s ease, box-shadow .3s ease;
}

.feature-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
}

.feature-card.c1::after {
    background: var(--primary);
}

.feature-card.c2::after {
    background: var(--accent);
}

.feature-card.c3::after {
    background: var(--primary-dark);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--text-dark);
    background: var(--primary-soft);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

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

/* ===== Carousel ===== */
.carousel-section {
    background: var(--dark);
    color: var(--bg-white);
    padding: var(--space-section) 0;
}

.carousel-section .section-head h2 {
    color: var(--bg-white);
}

.carousel-section .section-head p {
    color: rgba(255, 255, 255, 0.6);
}

.carousel-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 60px;
}

.carousel-viewport {
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.carousel-track {
    display: flex;
    transition: transform .5s ease;
}

.carousel-slide {
    min-width: 100%;
    position: relative;
}

.carousel-slide img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 24px 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: var(--bg-white);
    font-size: 15px;
    font-weight: 500;
    text-align: center;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: var(--bg-white);
    color: var(--text-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: all .3s ease;
}

.carousel-arrow:hover {
    background: var(--primary);
}

.carousel-arrow.prev {
    left: 0;
}

.carousel-arrow.next {
    right: 0;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.carousel-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all .3s ease;
}

.carousel-dots .dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 5px;
}

/* ===== System / Ticket ===== */
.system-section {
    background: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.system-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    z-index: 0;
}

.system-inner {
    position: relative;
    z-index: 1;
}

.ticket-card {
    background: var(--bg-white);
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    padding: 32px;
    height: 100%;
    transition: transform .3s ease, box-shadow .3s ease;
}

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

.ticket-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--primary);
}

.ticket-card.android::before {
    background: var(--primary);
}

.ticket-card.ios::before {
    background: var(--accent);
}

.ticket-version {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.ticket-version .os-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: var(--radius-badge);
    background: var(--primary-soft);
    color: var(--text-dark);
}

.ticket-version .os-badge.ios {
    background: rgba(255, 122, 0, 0.15);
    color: var(--accent);
}

.ticket-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 20px;
}

.ticket-meta .meta-item {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 12px 16px;
}

.ticket-meta .meta-item .label {
    font-size: 12px;
    color: var(--text-light);
}

.ticket-meta .meta-item .value {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

.qr-block {
    background: var(--bg-white);
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
    padding: 36px 28px;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: transform .3s ease, box-shadow .3s ease;
}

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

.qr-placeholder {
    width: 160px;
    height: 160px;
    background: var(--bg-light);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: 16px;
}

.qr-placeholder::before,
.qr-placeholder::after {
    content: '';
    position: absolute;
    background: var(--text-dark);
}

.qr-placeholder::before {
    width: 60px;
    height: 60px;
    background:
        linear-gradient(var(--text-dark) 20%, transparent 20%),
        linear-gradient(90deg, var(--text-dark) 20%, transparent 20%);
    background-size: 20px 20px;
}

.qr-placeholder::after {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border: 4px solid var(--text-dark);
    border-radius: 6px;
}

.qr-block p {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

/* ===== Reviews ===== */
.reviews-section {
    background: var(--bg-white);
    padding: var(--space-section) 0;
}

.reviews-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 40px;
}

.score-badge {
    background: var(--dark);
    color: var(--primary);
    border-radius: var(--radius-card);
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.score-badge .score-num {
    font-size: 36px;
    font-weight: 700;
}

.score-badge .stars {
    font-size: 14px;
    color: var(--primary);
}

.review-card {
    background: var(--bg-light);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    border: 1px solid var(--border);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform .3s ease;
}

.review-card:hover {
    transform: translateY(-4px);
}

.review-stars {
    color: var(--accent);
    font-size: 14px;
    margin-bottom: 14px;
    letter-spacing: 2px;
}

.review-text {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-body);
    flex-grow: 1;
    margin-bottom: 16px;
}

.review-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.review-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

.review-user .username {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.review-user .source {
    font-size: 12px;
    color: var(--text-light);
}

/* ===== Download CTA ===== */
.cta-section {
    background: var(--dark);
    color: var(--bg-white);
    padding: var(--space-section) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -80px;
    left: -80px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: var(--primary-soft);
    filter: blur(80px);
    opacity: 0.2;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--primary-soft);
    filter: blur(60px);
    opacity: 0.15;
}

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

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 12px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    font-size: 16px;
}

.cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.cta-safe {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.cta-safe i {
    color: var(--primary);
}

/* ===== News List ===== */
.news-section {
    background: var(--bg-light);
    padding: var(--space-section) 0;
}

.news-list {
    display: flex;
    flex-wrap: wrap;
}

.news-card-col {
    margin-bottom: 24px;
}

.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
    padding: 28px;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
    overflow: hidden;
}

.news-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: transparent;
    transition: background .3s ease;
}

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

.news-card:hover::after {
    background: var(--primary);
}

.news-card-top {
    flex-grow: 1;
}

.card-badge {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: var(--radius-badge);
    background: var(--primary-soft);
    color: var(--text-dark);
    margin-bottom: 12px;
}

.news-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.45;
    margin-bottom: 10px;
}

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

.news-card-excerpt {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.news-card-time {
    font-size: 13px;
    color: var(--text-light);
    font-family: var(--font-en);
}

.news-card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color .3s ease;
}

.news-card-link:hover {
    color: var(--primary-dark);
}

.empty-state {
    width: 100%;
    border: 2px dashed var(--border);
    background: var(--bg-white);
    border-radius: var(--radius-card);
    padding: 60px 20px;
    text-align: center;
    color: var(--text-light);
    font-size: 15px;
}

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

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

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    background: var(--bg-light);
    margin-bottom: 16px;
    overflow: hidden;
    transition: border-color .3s ease, background .3s ease;
}

.faq-item.active {
    border-color: var(--primary-dark);
    background: var(--bg-white);
}

.faq-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    user-select: none;
}

.faq-item-header .faq-q {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-item-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 400;
    color: var(--text-dark);
    transition: all .3s ease;
}

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

.faq-item-body {
    max-height: 0;
    overflow: hidden;
    padding: 0 24px;
    transition: max-height .35s ease, padding .35s ease;
}

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

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

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.65);
    padding: 64px 0 0;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col {
    flex: 1;
    min-width: 220px;
}

.footer-brand {
    font-size: 22px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-brand .logo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    display: inline-block;
}

.footer-about-text {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.5);
    max-width: 300px;
}

.footer-title {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 600;
    margin-bottom: 16px;
}

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

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color .3s ease, padding-left .3s ease;
}

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

.footer-info p {
    font-size: 14px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.55);
}

.footer-info i {
    color: var(--primary);
    margin-right: 8px;
    width: 16px;
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.35);
    font-size: 13px;
}

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

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

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: var(--shadow-btn);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all .3s ease;
}

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

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

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
    .hero-section::before {
        width: 100%;
        clip-path: none;
        opacity: 0.3;
    }

    .hero-inner {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-btns,
    .hero-stats {
        justify-content: center;
    }

    .device-frame {
        width: 240px;
        height: 500px;
        margin: 0 auto;
    }

    .device-float-tag.t1 {
        left: -20px;
    }

    .device-float-tag.t2 {
        right: -20px;
    }
}

@media screen and (max-width: 640px) {
    .header-inner {
        height: 60px;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 63px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 24px rgba(28, 29, 33, 0.08);
        padding: 12px 20px;
        z-index: 998;
    }

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

    .main-nav ul {
        flex-direction: column;
        gap: 4px;
    }

    .main-nav a {
        display: block;
        padding: 12px 8px;
        border-radius: var(--radius-btn);
    }

    .main-nav .active a {
        background: var(--primary-soft);
    }

    .hamburger {
        display: flex;
    }

    .header-actions .btn-download {
        display: none;
    }

    .section {
        padding: 56px 0;
    }

    .section-head h2 {
        font-size: 26px;
    }

    .carousel-container {
        padding: 0 40px;
    }

    .carousel-slide img {
        height: 260px;
    }

    .carousel-arrow {
        width: 36px;
        height: 36px;
    }

    .ticket-meta {
        grid-template-columns: 1fr;
    }

    .reviews-header {
        justify-content: center;
        text-align: center;
    }

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

    .news-card {
        padding: 20px;
    }

    .footer-grid {
        gap: 28px;
    }
}

@media screen and (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 10px;
    }

    .device-float-tag {
        display: none;
    }

    .carousel-container {
        padding: 0 36px;
    }

    .carousel-slide img {
        height: 220px;
    }
}

/* roulang page: category1 */
:root {
            --primary: #CCFF00;
            --primary-dark: #B4E600;
            --primary-light: #E2FF6B;
            --accent: #FF7A00;
            --dark: #1C1D21;
            --dark-soft: #2A2B30;
            --bg: #F7F6F3;
            --card: #FFFFFF;
            --text: #1A1A1A;
            --text-body: #3E3E3E;
            --text-muted: #8A8A8A;
            --border: #E6E6E6;
            --radius: 16px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(28, 29, 33, 0.08);
            --container: 1200px;
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(28, 29, 33, 0.06);
        }

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

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

        .logo-dot {
            width: 12px;
            height: 12px;
            background: var(--primary);
            border-radius: 50%;
            display: inline-block;
            box-shadow: 0 0 0 4px rgba(204, 255, 0, 0.25);
        }

        .brand-text {
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0.02em;
            color: var(--text);
            white-space: nowrap;
        }

        .brand-text span {
            color: var(--primary-dark);
        }

        .main-nav ul {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: #555;
            position: relative;
            padding: 6px 2px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.3s ease;
        }

        .main-nav a:hover {
            color: var(--text);
        }

        .main-nav a:hover::after {
            transform: scaleX(1);
            transform-origin: left;
        }

        .main-nav li.active a {
            color: var(--text);
            font-weight: 700;
        }

        .main-nav li.active a::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: -6px;
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
        }

        .main-nav li.active a::after {
            transform: scaleX(1);
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            background: var(--primary);
            color: #111 !important;
            font-weight: 700;
            font-size: 14px;
            border-radius: 8px;
            border: 2px solid var(--primary);
            box-shadow: 0 4px 14px rgba(204, 255, 0, 0.35);
            transition: var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(204, 255, 0, 0.45);
            background: #d8ff4d;
            border-color: #d8ff4d;
        }

        .btn-download:focus-visible,
        .btn-cta:focus-visible,
        .btn-download-side:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text);
            background: #fff;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary);
            border-color: var(--primary);
        }

        .header-progress {
            height: 3px;
            background: var(--primary);
            width: 100%;
            position: absolute;
            bottom: -1px;
            left: 0;
            z-index: 2;
            border-radius: 0 0 4px 4px;
        }

        /* Category Hero */
        .category-hero {
            position: relative;
            background: var(--dark);
            background-image: linear-gradient(135deg, rgba(28, 29, 33, 0.92) 30%, rgba(204, 255, 0, 0.12) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 60%;
            padding: 100px 0 90px;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60px;
            background: var(--bg);
            clip-path: polygon(0 40%, 100% 0, 100% 100%, 0 100%);
            opacity: 1;
        }

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

        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.15);
            border: 1px solid rgba(204, 255, 0, 0.4);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.06em;
            margin-bottom: 22px;
        }

        .category-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }

        .category-hero h1 .hero-accent {
            color: var(--primary);
        }

        .category-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 640px;
            line-height: 1.9;
        }

        /* Category Content */
        .category-content {
            padding: 72px 0 80px;
        }

        .category-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 40px;
            align-items: start;
        }

        .section-title-block {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .section-title-block h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .section-title-block h2::before {
            content: '';
            width: 32px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            display: inline-block;
        }

        .section-title-sub {
            color: var(--text-muted);
            font-size: 14px;
        }

        .event-cards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .event-card {
            display: flex;
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            min-height: 200px;
        }

        .event-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
            opacity: 0;
            transition: var(--transition);
            z-index: 2;
        }

        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }

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

        .event-card.featured {
            grid-column: 1 / -1;
            min-height: 220px;
        }

        .event-card.featured .event-thumb {
            flex-basis: 280px;
        }

        .event-info {
            flex: 1;
            padding: 28px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .event-tag {
            display: inline-flex;
            align-self: flex-start;
            background: rgba(204, 255, 0, 0.2);
            color: #4a6b00;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .event-info h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .event-info p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .event-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .event-link i {
            font-size: 12px;
            transition: transform 0.3s ease;
            color: var(--primary-dark);
        }

        .event-link:hover {
            color: var(--primary-dark);
        }

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

        .event-thumb {
            flex: 0 0 140px;
            min-height: 200px;
            position: relative;
            overflow: hidden;
        }

        .event-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
            transition: transform 0.5s ease;
        }

        .event-card:hover .event-thumb img {
            transform: scale(1.06);
        }

        .event-thumb::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, var(--card) 0%, transparent 30%);
            pointer-events: none;
        }

        .event-card.featured .event-thumb::after {
            background: linear-gradient(90deg, var(--card) 0%, transparent 20%);
        }

        /* Sidebar */
        .category-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 96px;
        }

        .side-card {
            background: var(--card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: var(--transition);
        }

        .side-card:hover {
            border-color: #d9e6a8;
            box-shadow: var(--shadow);
        }

        .side-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            position: relative;
            padding-left: 14px;
        }

        .side-card h4::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 16px;
            background: var(--primary);
            border-radius: 2px;
        }

        .download-card .app-icon {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            background: var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 14px;
        }

        .download-card .app-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
        }

        .download-card .app-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin: 6px 0 4px;
        }

        .rating-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .rating-stars {
            color: var(--accent);
            font-size: 14px;
            letter-spacing: 2px;
        }

        .rating-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--text);
        }

        .btn-download-side {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 0;
            background: var(--primary);
            color: #111;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .btn-download-side:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(204, 255, 0, 0.4);
        }

        .version-card ul {
            display: flex;
            flex-direction: column;
        }

        .version-card li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .version-card li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .version-card .version-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary-dark);
            background: rgba(204, 255, 0, 0.15);
            padding: 2px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .version-card .version-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        /* Stats Bar */
        .stats-bar {
            background: var(--dark);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-bar::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.12) 0%, transparent 70%);
        }

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

        .stat-item {
            text-align: center;
            padding: 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .stat-item:hover {
            border-color: rgba(204, 255, 0, 0.3);
            background: rgba(204, 255, 0, 0.06);
        }

        .stat-item strong {
            display: block;
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
            font-family: "Inter", Arial, sans-serif;
        }

        .stat-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0 60px;
        }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.2);
            color: #4a6b00;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 999px;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }

        .faq-section h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .faq-section .faq-desc {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 560px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(204, 255, 0, 0.12);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            transition: var(--transition);
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--primary-dark);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            border-color: var(--primary);
            color: #111;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

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

        /* CTA Bar */
        .cta-bar {
            background: var(--dark);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-bar::before {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 0;
            width: 100%;
            height: 120px;
            background: var(--primary);
            opacity: 0.08;
            transform: skewY(-2deg);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .cta-text {
            flex: 1;
            min-width: 260px;
        }

        .cta-text h3 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        .cta-text p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
        }

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

        .btn-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #111 !important;
            font-weight: 700;
            font-size: 15px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--primary);
            box-shadow: 0 6px 18px rgba(204, 255, 0, 0.35);
            transition: var(--transition);
        }

        .btn-cta:hover {
            transform: translateY(-2px);
            background: #d8ff4d;
            border-color: #d8ff4d;
            box-shadow: 0 10px 26px rgba(204, 255, 0, 0.45);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            background: transparent;
            color: #fff !important;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

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

        .cta-security {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 10px;
        }

        /* Footer */
        .site-footer {
            background: #141518;
            padding: 72px 0 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-dot {
            background: var(--primary);
        }

        .footer-about-text {
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
            margin-bottom: 20px;
        }

        .footer-title {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

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

        .footer-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-info i {
            color: var(--primary);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

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

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }

        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #111;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            box-shadow: 0 6px 18px rgba(204, 255, 0, 0.35);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: var(--transition);
            border: none;
        }

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

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px) !important;
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: 1fr;
            }

            .category-side {
                position: static;
                flex-direction: row;
                gap: 24px;
            }

            .side-card {
                flex: 1;
            }
        }

        @media (max-width: 640px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(28, 29, 33, 0.08);
                transform: translateY(-120%);
                transition: transform 0.4s ease;
                z-index: 999;
                padding: 16px 0;
            }

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

            .main-nav ul {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 0 24px;
            }

            .main-nav li a {
                display: block;
                padding: 14px 0;
                border-bottom: 1px solid var(--border);
                font-size: 16px;
            }

            .main-nav li:last-child a {
                border-bottom: none;
            }

            .main-nav li.active a::before {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .btn-download {
                display: none;
            }

            .category-hero {
                padding: 72px 0 68px;
            }

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

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

            .category-content {
                padding: 48px 0 56px;
            }

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

            .event-card,
            .event-card.featured {
                flex-direction: column;
                grid-column: auto;
            }

            .event-thumb,
            .event-card.featured .event-thumb {
                flex: none;
                width: 100%;
                height: 140px;
                min-height: 140px;
                order: -1;
            }

            .event-thumb::after {
                background: linear-gradient(180deg, transparent 50%, var(--card) 100%);
            }

            .event-info {
                padding: 20px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-item strong {
                font-size: 28px;
            }

            .faq-section {
                padding: 48px 0 40px;
            }

            .faq-section h2 {
                font-size: 26px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }

            .cta-actions {
                width: 100%;
            }

            .btn-cta,
            .btn-cta-outline {
                flex: 1;
            }

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

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

            .back-to-top {
                bottom: 20px;
                right: 20px;
            }

            .category-side {
                flex-direction: column;
            }
        }

        @media (min-width: 641px) and (max-width: 1024px) {
            .event-cards-grid {
                grid-template-columns: 1fr 1fr;
            }

            .event-thumb {
                flex-basis: 120px;
            }
        }

/* roulang page: article */
:root {
            --primary: #CCFF00;
            --primary-dark: #B4FF00;
            --accent: #FF7A00;
            --dark: #1C1D21;
            --bg: #F7F6F3;
            --card-bg: #FFFFFF;
            --heading: #1A1A1A;
            --text: #3E3E3E;
            --muted: #8A8A8A;
            --border: #E6E6E6;
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 8px rgba(28, 29, 33, 0.06);
            --shadow-hover: 0 8px 24px rgba(28, 29, 33, 0.10);
            --container: 1200px;
            --transition: 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .97);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 3px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .site-header::after {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 50%, transparent 100%);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 20px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--heading);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--dark);
        }
        .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 3px rgba(204, 255, 0, .35);
            flex-shrink: 0;
        }
        .main-nav ul {
            display: flex;
            gap: 4px;
        }
        .main-nav a {
            display: inline-block;
            padding: 8px 16px;
            font-weight: 600;
            color: #3A3A3A;
            border-radius: var(--radius-md);
            position: relative;
            font-size: 15px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .3s ease;
        }
        .main-nav a:hover {
            color: var(--dark);
        }
        .main-nav a:hover::after {
            transform: scaleX(1);
        }
        .main-nav li.active a {
            color: var(--dark);
            font-weight: 700;
        }
        .main-nav li.active a::after {
            transform: scaleX(1);
        }
        .main-nav li.active a::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            vertical-align: middle;
            margin-right: 6px;
        }
        .btn-download {
            height: 44px;
            padding: 0 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: #111;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            white-space: nowrap;
        }
        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(204, 255, 0, .45);
            background: var(--primary-dark);
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            background: var(--bg);
            border-radius: var(--radius-md);
            font-size: 20px;
            color: var(--heading);
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: #EEEDE8;
        }
        @media (max-width: 767px) {
            .main-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                padding: 16px;
                display: none;
                box-shadow: 0 16px 32px rgba(0, 0, 0, .08);
            }
            .main-nav.open {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 2px;
            }
            .main-nav a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-md);
            }
            .main-nav a::after {
                display: none;
            }
            .main-nav li.active a {
                background: rgba(204, 255, 0, .15);
            }
            .nav-toggle {
                display: inline-flex;
            }
            .btn-download-desk {
                display: none;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: linear-gradient(180deg, #F0EFEB 0%, var(--bg) 100%);
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--muted);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: #6B8E00;
        }
        .breadcrumb .current {
            color: var(--muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 240px;
        }

        /* ===== Article Section ===== */
        .article-section {
            padding: 48px 0 80px;
            background: var(--bg);
        }
        .article-wrap {
            max-width: 780px;
            margin: 0 auto;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px;
            border: 1px solid #f0f0ee;
        }
        @media (max-width: 640px) {
            .article-wrap {
                padding: 24px 18px;
                border-radius: 12px;
            }
        }
        .article-cat-badge {
            display: inline-block;
            background: var(--primary);
            color: #111;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }
        .article-title {
            font-size: clamp(26px, 5vw, 40px);
            font-weight: 800;
            line-height: 1.35;
            color: var(--heading);
            margin-bottom: 18px;
            letter-spacing: -0.2px;
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
            margin-bottom: 28px;
            font-size: 14px;
            color: var(--muted);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            color: var(--muted);
            font-size: 15px;
        }
        @media (max-width: 520px) {
            .article-meta-row {
                gap: 10px;
                font-size: 13px;
            }
        }

        /* ===== Article Body ===== */
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.6em;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--heading);
            margin: 40px 0 16px;
            line-height: 1.4;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--heading);
            margin: 32px 0 12px;
            line-height: 1.4;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--heading);
            margin: 24px 0 10px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em 22px;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #FBFBF8;
            padding: 18px 22px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 0 0 1.6em;
            color: var(--text);
            font-style: normal;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-body figcaption {
            font-size: 13px;
            color: var(--muted);
            margin-top: -14px;
            margin-bottom: 24px;
            text-align: center;
        }
        .article-body figure {
            margin: 24px 0;
        }
        .article-body pre {
            background: var(--dark);
            color: var(--primary);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            overflow-x: auto;
            font-family: "SFMono-Regular", Menlo, Consolas, monospace;
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 1.6em;
        }
        .article-body code {
            background: #F0F0ED;
            border-radius: 4px;
            padding: 2px 6px;
            font-size: 14px;
            font-family: "SFMono-Regular", Menlo, Consolas, monospace;
            color: #C0392B;
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body a {
            color: #6B8E00;
            font-weight: 600;
            border-bottom: 1px solid rgba(107, 142, 0, .3);
        }
        .article-body a:hover {
            border-bottom-color: #6B8E00;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 1.6em;
            font-size: 15px;
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 12px;
            text-align: left;
        }
        .article-body table th {
            background: #F7F6F3;
            font-weight: 700;
            color: var(--heading);
        }

        /* ===== Tags ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .tag {
            display: inline-block;
            border: 1.5px solid var(--primary);
            color: #4A4A4A;
            background: transparent;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .tag:hover {
            background: rgba(204, 255, 0, .2);
            border-color: #A8D500;
            color: var(--dark);
        }

        /* ===== CTA Banner ===== */
        .article-cta {
            position: relative;
            margin-top: 40px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background-image: url('/assets/images/coverpic/cover-1.png');
            background-size: cover;
            background-position: center;
            padding: 36px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(28, 29, 33, .92) 0%, rgba(28, 29, 33, .72) 100%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            flex: 1;
            min-width: 220px;
        }
        .cta-content h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, .8);
            font-size: 14px;
        }
        .article-cta .btn {
            position: relative;
            z-index: 2;
            flex-shrink: 0;
        }
        .btn-lg {
            height: 48px;
            padding: 0 32px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: #111;
            font-weight: 700;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            font-size: 16px;
            transition: all var(--transition);
        }
        .btn-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(204, 255, 0, .35);
        }
        @media (max-width: 640px) {
            .article-cta {
                padding: 28px 20px;
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Related ===== */
        .related-section {
            margin-top: 44px;
        }
        .related-title-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .related-title-wrap h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--heading);
        }
        .related-title-wrap::before {
            content: '';
            width: 32px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        .related-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all var(--transition);
            height: 100%;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary);
        }
        .related-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: #6B8E00;
            background: rgba(204, 255, 0, .2);
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .related-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--heading);
            line-height: 1.5;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--muted);
        }
        .related-meta span:last-child {
            color: #6B8E00;
            font-weight: 600;
            font-size: 13px;
        }
        .related-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 32px;
            text-align: center;
            color: var(--muted);
            background: #FAFAF8;
        }

        /* ===== Back Bar ===== */
        .back-bar {
            margin-top: 36px;
            text-align: center;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1.5px solid var(--dark);
            color: var(--dark);
            background: transparent;
            border-radius: var(--radius-md);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-outline:hover {
            border-color: #6B8E00;
            color: #6B8E00;
            background: rgba(204, 255, 0, .08);
        }

        /* ===== Not Found ===== */
        .not-found-wrap {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-wrap h1 {
            font-size: 32px;
            font-weight: 800;
            color: var(--heading);
            margin: 20px 0 10px;
        }
        .not-found-wrap p {
            color: var(--muted);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .not-found-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto;
            border-radius: 50%;
            background: rgba(204, 255, 0, .2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: #6B8E00;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 46px;
            padding: 0 28px;
            background: var(--primary);
            color: #111;
            font-weight: 700;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            font-size: 15px;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(204, 255, 0, .4);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #A7AAB0;
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .logo-dot {
            background: var(--primary);
        }
        .footer-about-text {
            font-size: 14px;
            line-height: 1.7;
            color: #8E9198;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: #A7AAB0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-info p {
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #A7AAB0;
        }
        .footer-info i {
            color: var(--primary);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: #6F7278;
        }
        .footer-bottom a {
            color: #6F7278;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        @media (max-width: 767px) {
            .header-inner {
                min-height: 64px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .btn-download {
                display: none;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
:root {
  --primary: #CCFF00;
  --primary-hover: #b8e600;
  --accent: #FF7A00;
  --dark: #1C1D21;
  --dark-soft: #25262b;
  --bg: #F7F6F3;
  --card-bg: #FFFFFF;
  --text: #1A1A1A;
  --text-body: #3E3E3E;
  --text-muted: #8A8A8A;
  --border: #E6E6E6;
  --radius-lg: 16px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --radius-img: 12px;
  --shadow-hover: 0 8px 24px rgba(28,29,33,0.08);
  --container-max: 1200px;
  --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Inter, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
ul, ol {
  list-style: none;
}
button {
  cursor: pointer;
  font-family: inherit;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
.section-header {
  margin-bottom: 48px;
  text-align: center;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-kicker::before,
.section-kicker::after {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--primary);
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  letter-spacing: -0.5px;
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 12px auto 0;
  line-height: 1.7;
}
.section-title::before {
  content: '';
  display: block;
  width: 32px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
  margin: 0 auto 16px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--primary);
  color: #111 !important;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(204, 255, 0, 0.25);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(204, 255, 0, 0.35);
}
.btn-outline-light {
  background: transparent;
  color: #fff !important;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  color: var(--text) !important;
  border-color: var(--text);
}
.btn-outline-dark:hover {
  border-color: var(--primary);
  color: #111 !important;
  background: rgba(204,255,0,0.08);
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--dark);
  color: #fff !important;
  border-color: var(--dark);
}
.btn-dark:hover {
  background: var(--dark-soft);
  transform: translateY(-2px);
}
.btn-lg {
  padding: 16px 38px;
  font-size: 16px;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ===== Header & Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(28,29,33,0.02);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
}
.logo-dot {
  display: block;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 3px;
  transform: rotate(45deg);
  box-shadow: 0 2px 8px rgba(204,255,0,0.5);
}
.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}
.main-nav ul {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  display: inline-block;
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
  border-radius: var(--radius-btn);
  transition: var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 4px;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a:hover::after {
  transform: scaleX(1);
}
.main-nav li.active a {
  color: #111;
  background: rgba(204,255,0,0.15);
}
.main-nav li.active a::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 6px;
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  transform: translateY(-50%);
}
.header-cta {
  flex-shrink: 0;
}
.btn-download {
  height: 44px;
  padding: 0 22px;
  font-size: 14px;
  border-radius: var(--radius-btn);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.menu-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero Banner ===== */
.hero-banner {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(28,29,33,0.88) 0%, rgba(28,29,33,0.62) 60%, rgba(204,255,0,0.18) 100%);
  z-index: 1;
}
.hero-banner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--bg);
  clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 100%);
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 800px;
  padding: 80px 24px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(204,255,0,0.15);
  border: 1px solid rgba(204,255,0,0.4);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-badge);
  letter-spacing: 1px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 16px;
}
.hero-title span {
  color: var(--primary);
}
.hero-subtitle {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--dark);
  padding: 32px 0;
  margin-top: -1px;
  position: relative;
  z-index: 2;
}
.stats-grid {
  display: flex;
  justify-content: space-around;
  gap: 24px;
  flex-wrap: wrap;
}
.stat-item {
  text-align: center;
  padding: 16px 24px;
  min-width: 160px;
}
.stat-icon {
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 8px;
}
.stat-value {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
}
.stat-value small {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  font-weight: 400;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.feature-card:hover::after {
  opacity: 1;
}
.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(204,255,0,0.15);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #111;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Content Cards (Banner Style) ===== */
.content-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.content-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  box-shadow: 0 4px 20px rgba(28,29,33,0.06);
  transition: var(--transition);
}
.content-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.content-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.content-card:hover img {
  transform: scale(1.05);
}
.card-overlay {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 32px;
  background: linear-gradient(180deg, transparent 0%, rgba(28,29,33,0.75) 60%, rgba(28,29,33,0.92) 100%);
  color: #fff;
}
.card-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary);
  color: #111;
  font-size: 12px;
  font-weight: 800;
  border-radius: var(--radius-badge);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.card-tag.orange {
  background: var(--accent);
  color: #fff;
}
.card-tag.dark {
  background: var(--dark);
  color: var(--primary);
}
.card-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.3;
}
.card-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin-bottom: 12px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  transition: var(--transition);
}
.card-link:hover {
  color: #fff;
  gap: 12px;
}
.card-link i {
  font-size: 12px;
}

/* ===== Process Section ===== */
.process-section {
  background: var(--dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.process-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(204,255,0,0.06);
}
.process-section .section-title {
  color: #fff;
}
.process-section .section-title::before {
  background: var(--primary);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-step {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  transition: var(--transition);
  text-align: center;
}
.process-step:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(204,255,0,0.3);
  transform: translateY(-4px);
}
.process-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #111;
  font-weight: 800;
  font-size: 16px;
  border-radius: 10px;
  margin-bottom: 16px;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.process-step p {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}
.step-line {
  position: absolute;
  top: 50%;
  right: -24px;
  width: 24px;
  height: 2px;
  background: rgba(204,255,0,0.4);
  z-index: 1;
}
.step-line::after {
  content: '';
  position: absolute;
  right: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  border-top: 2px solid rgba(204,255,0,0.4);
  border-right: 2px solid rgba(204,255,0,0.4);
  transform: rotate(45deg);
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(28,29,33,0.04);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover {
  color: #111;
  background: rgba(204,255,0,0.04);
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  transition: var(--transition);
  margin-left: 16px;
}
.faq-item.active .faq-icon {
  border-color: var(--primary);
  background: var(--primary);
  color: #111;
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(0,0,0,0.04);
  padding-top: 16px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: var(--dark);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(204,255,0,0.08) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}
.cta-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.cta-title span {
  color: var(--primary);
}
.cta-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.65);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
  border-top: 4px solid var(--primary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand .logo-dot {
  background: var(--primary);
}
.footer-about-text {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 320px;
}
.footer-title {
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.footer-info p {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-info i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a {
  color: rgba(255,255,255,0.5);
}
.footer-bottom a:hover {
  color: var(--primary);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-line {
    display: none;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    flex-wrap: wrap;
    padding: 14px 0;
  }
  .brand {
    order: 1;
  }
  .header-cta {
    order: 2;
    margin-left: auto;
  }
  .menu-toggle {
    display: flex;
    order: 3;
    margin-left: 8px;
  }
  .main-nav {
    order: 4;
    flex-basis: 100%;
    display: none;
    flex-direction: column;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 12px;
    margin-top: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(28,29,33,0.08);
  }
  .main-nav.open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }
  .main-nav a {
    display: block;
    padding: 12px 16px;
  }
  .main-nav a::after {
    display: none;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .content-cards-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    gap: 8px;
  }
  .stat-item {
    min-width: 120px;
    padding: 12px 8px;
  }
  .section {
    padding: 56px 0;
  }
  .hero-banner {
    min-height: 500px;
  }
  .hero-content {
    padding: 60px 20px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .cta-actions .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .header-cta .btn-download {
    padding: 0 16px;
    font-size: 13px;
  }
  .btn-download span.text {
    display: none;
  }
  .btn-download {
    font-size: 13px;
  }
  .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stat-item {
    min-width: 0;
  }
  .card-overlay {
    padding: 20px;
  }
  .card-title {
    font-size: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .brand a {
    font-size: 16px;
  }
  .logo-dot {
    width: 10px;
    height: 10px;
  }
  .section-title {
    font-size: 26px;
  }
}