/* roulang page: index */
:root {
    --bg: #F7F8FA;
    --bg-deep: #0B0F14;
    --bg-soft: #f0f1f4;
    --primary: #00E599;
    --primary-hover: #00C884;
    --primary-soft: rgba(0, 229, 153, 0.12);
    --accent: #C9A96E;
    --accent-soft: rgba(201, 169, 110, 0.15);
    --text-main: #1A1D21;
    --text-second: #6B7280;
    --line-color: #E5E7EB;
    --radius-card: 16px;
    --radius-btn: 8px;
    --radius-img: 12px;
    --shadow-normal: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
    --shadow-hover: 0 24px 60px rgba(0,0,0,0.10);
    --transition: all .25s ease;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

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

ul, ol {
    list-style: none;
}

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

:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

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

@media (max-width: 768px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }
}

section {
    padding: 80px 0;
}

@media (max-width: 768px) {
    section {
        padding: 48px 0;
    }
}

/* ===== Buttons ===== */
.btn {
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 15px;
    padding: 10px 22px;
    border: 0;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    line-height: 1.4;
}

.btn:hover {
    transform: translateY(-2px);
    color: #fff;
}

.btn-primary {
    background: var(--primary);
    color: #0B0F14;
    box-shadow: 0 4px 16px rgba(0,229,153,0.25);
}

.btn-primary:hover {
    background: var(--primary-hover);
    color: #0B0F14;
    box-shadow: 0 8px 24px rgba(0,229,153,0.35);
    transform: translateY(-2px);
}

.btn-outline-light {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.5);
    color: #fff;
}

.btn-outline-light:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0,229,153,0.08);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

.btn-xl {
    padding: 18px 52px;
    font-size: 17px;
    border-radius: 10px;
}

.btn-download-main {
    background: var(--primary);
    color: #0B0F14;
    box-shadow: 0 8px 32px rgba(0,229,153,0.3);
    font-size: 17px;
}

.btn-download-main:hover {
    background: var(--primary-hover);
    color: #0B0F14;
    box-shadow: 0 12px 40px rgba(0,229,153,0.4);
    transform: translateY(-2px);
}

/* ===== Badge / Tag ===== */
.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-kicker::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.badge-cat {
    display: inline-block;
    padding: 3px 12px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    background: var(--primary-soft);
    color: #007a52;
    border: 1px solid rgba(0,229,153,0.2);
}

/* ===== Section Heading ===== */
.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-head .section-kicker {
    justify-content: center;
}

.section-head .section-kicker::before {
    display: none;
}

.section-head h2 {
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    line-height: 1.25;
}

.section-head p {
    color: var(--text-second);
    font-size: 16px;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .section-head h2 {
        font-size: 26px;
    }
    .section-head {
        margin-bottom: 36px;
    }
}

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-color);
}

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

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

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: var(--bg-deep);
    border: 1px solid rgba(0,229,153,0.4);
    color: var(--primary);
    font-weight: 800;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: -0.02em;
}

.brand-name {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.brand-name em {
    font-style: normal;
    color: var(--primary);
}

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

.desktop-nav .nav-link-item {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-second);
    padding: 8px 0;
    transition: var(--transition);
}

.desktop-nav .nav-link-item::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width .25s ease;
}

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

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

.btn-download-header {
    padding: 10px 24px;
    font-size: 15px;
    font-weight: 700;
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line-color);
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    border-top: 1px solid var(--line-color);
    background: rgba(255,255,255,0.97);
}

.mobile-menu ul {
    padding: 16px 0 24px;
}

.mobile-menu li {
    border-bottom: 1px solid rgba(229,231,235,0.6);
}

.mobile-menu li:last-child {
    border-bottom: none;
    padding-top: 12px;
}

.mobile-menu .nav-link-item {
    display: block;
    padding: 14px 4px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.mobile-menu .nav-link-item.active {
    color: var(--primary-hover);
}

.mobile-menu .btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}

@media (max-width: 991.98px) {
    .desktop-nav {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .header-actions .btn-download-header {
        display: inline-flex;
    }
}

@media (min-width: 992px) {
    .mobile-menu {
        display: none !important;
    }
}

/* ===== Hero ===== */
.hero {
    background: var(--bg-deep);
    position: relative;
    padding: 96px 0 88px;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

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

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 0 0 52%;
    max-width: 560px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--primary);
    background: rgba(0,229,153,0.08);
    border: 1px solid rgba(0,229,153,0.2);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 24px;
}

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

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: #fff;
    margin-bottom: 24px;
}

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

.hero-sub {
    font-size: 17px;
    line-height: 1.7;
    color: #9CA3AF;
    margin-bottom: 36px;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 32px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat strong {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    font-family: Georgia, "Times New Roman", serif;
}

.hero-stat span {
    font-size: 13px;
    color: #9CA3AF;
}

.hero-preview {
    flex: 0 0 42%;
    position: relative;
}

.hero-preview-inner {
    position: relative;
    border-radius: var(--radius-img);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 32px 80px rgba(0,0,0,0.35);
}

.hero-preview-inner img {
    display: block;
    width: 100%;
    transform: scale(1);
    transition: transform .6s ease;
}

.hero-preview-inner:hover img {
    transform: scale(1.03);
}

.hero-preview-sticker {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(0,229,153,0.9);
    color: #0B0F14;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 6px;
    letter-spacing: 0.02em;
}

@media (max-width: 991.98px) {
    .hero-inner {
        flex-direction: column-reverse;
        gap: 40px;
    }
    .hero-content {
        flex: 1 1 auto;
        max-width: 100%;
        text-align: left;
    }
    .hero h1 {
        font-size: 40px;
    }
    .hero-preview {
        flex: 1 1 auto;
        max-width: 520px;
        width: 100%;
    }
    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 56px 0 48px;
    }
    .hero h1 {
        font-size: 30px;
    }
    .hero-sub {
        font-size: 15px;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .hero-stats {
        gap: 16px;
    }
    .hero-stat strong {
        font-size: 22px;
    }
}

/* ===== Features ===== */
.features {
    background: var(--bg);
    padding: 80px 0;
}

.feature-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.feature-col {
    padding: 24px 32px;
    min-height: 180px;
    background: #fff;
    border-radius: var(--radius-card);
    border: 1px solid rgba(107,114,128,0.12);
    box-shadow: var(--shadow-normal);
    transition: var(--transition);
    margin: 0 12px;
    position: relative;
    overflow: hidden;
}

.feature-col::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), rgba(0,229,153,0.2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .35s ease;
}

.feature-col:hover::after {
    transform: scaleX(1);
}

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

.feature-num {
    display: block;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 28px;
    font-weight: 700;
    color: rgba(0,229,153,0.5);
    margin-bottom: 16px;
    line-height: 1.2;
}

.feature-col h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-col p {
    font-size: 14px;
    line-height: 1.75;
    color: var(--text-second);
    margin-bottom: 0;
}

@media (max-width: 991.98px) {
    .feature-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .feature-col {
        margin: 0;
    }
    .features {
        padding: 56px 0;
    }
}

/* ===== Showcase Carousel ===== */
.showcase {
    background: var(--bg-soft);
    padding: 80px 0;
}

.carousel-custom {
    max-width: 860px;
    margin: 0 auto;
    background: #fff;
    border-radius: 20px;
    padding: 28px;
    box-shadow: var(--shadow-normal);
    border: 1px solid rgba(107,114,128,0.1);
}

.carousel-stage {
    border-radius: var(--radius-img);
    overflow: hidden;
    background: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 520px;
}

.carousel-stage img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .6s ease;
}

.carousel-stage img:hover {
    transform: scale(1.03);
}

.carousel-caption-custom {
    padding: 20px 8px 4px;
    text-align: center;
}

.carousel-caption-custom h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
}

.carousel-caption-custom p {
    font-size: 14px;
    color: var(--text-second);
    margin: 0;
}

.carousel-control-prev,
.carousel-control-next {
    width: 52px;
    height: 52px;
    top: 50%;
    transform: translateY(-50%);
    bottom: auto;
    background: var(--bg-deep);
    border-radius: 50%;
    opacity: 1;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-control-prev {
    left: -14px;
}

.carousel-control-next {
    right: -14px;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    background: var(--primary);
    color: var(--bg-deep);
    border-color: var(--primary);
}

.carousel-control-prev i,
.carousel-control-next i {
    font-size: 18px;
}

.carousel-indicators {
    position: static;
    margin: 20px 0 0;
    gap: 8px;
}

.carousel-indicators button {
    width: 28px;
    height: 4px;
    border-radius: 2px;
    background: var(--line-color) !important;
    border: none;
    margin: 0 !important;
    transition: var(--transition);
}

.carousel-indicators button.active {
    background: var(--primary) !important;
    width: 40px;
}

@media (max-width: 768px) {
    .carousel-custom {
        padding: 16px;
        border-radius: 16px;
    }
    .carousel-stage {
        height: 280px;
    }
    .carousel-control-prev {
        left: 4px;
    }
    .carousel-control-next {
        right: 4px;
    }
}

/* ===== Requirements ===== */
.requirements {
    background: var(--bg);
    padding: 80px 0;
}

.req-layout {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 60px;
    align-items: center;
}

.req-left .section-kicker {
    margin-bottom: 14px;
}

.req-left h2 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.req-left p {
    color: var(--text-second);
    margin-bottom: 28px;
    font-size: 15px;
}

.req-left img {
    border-radius: var(--radius-img);
    width: 100%;
    display: block;
    box-shadow: var(--shadow-normal);
}

.spec-list {
    margin: 0;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 22px 8px;
    border-bottom: 1px solid var(--line-color);
    gap: 24px;
}

.spec-row:first-child {
    padding-top: 0;
}

.spec-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-row dt {
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    width: 90px;
}

.spec-row dd {
    font-size: 15px;
    color: var(--text-second);
    text-align: right;
    margin: 0;
    line-height: 1.6;
}

@media (max-width: 991.98px) {
    .req-layout {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .req-left img {
        max-width: 480px;
    }
}

@media (max-width: 576px) {
    .spec-row {
        flex-direction: column;
        gap: 4px;
        padding: 18px 0;
    }
    .spec-row dt,
    .spec-row dd {
        width: 100%;
        text-align: left;
    }
}

/* ===== Testimonials ===== */
.testimonials {
    background: var(--bg-soft);
    padding: 80px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: flex-start;
}

.testimonial-card {
    background: #fff;
    border-radius: var(--radius-card);
    padding: 28px;
    box-shadow: var(--shadow-normal);
    border: 1px solid rgba(107,114,128,0.1);
    transition: var(--transition);
    height: auto;
}

.testimonial-card.offset-card {
    transform: translateY(24px);
}

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

.testimonial-card.offset-card:hover {
    transform: translateY(20px);
    box-shadow: var(--shadow-hover);
}

.testimonial-stars {
    color: var(--accent);
    font-size: 15px;
    letter-spacing: 2px;
    margin-bottom: 18px;
}

.testimonial-quote {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-second);
    margin-bottom: 24px;
    min-height: 80px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid rgba(229,231,235,0.6);
    padding-top: 16px;
}

.testimonial-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-deep);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    flex-shrink: 0;
    border: 1px solid rgba(0,229,153,0.3);
}

.testimonial-name {
    font-size: 14px;
    font-weight: 700;
    line-height: 1.3;
}

.testimonial-role {
    font-size: 12px;
    color: var(--text-second);
}

@media (max-width: 1199.98px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonial-card.offset-card {
        transform: none;
    }
    .testimonial-card.offset-card:hover {
        transform: translateY(-4px);
    }
    .testimonial-quote {
        min-height: auto;
    }
}

@media (max-width: 576px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== Download Zone ===== */
.download-zone {
    background: var(--bg-deep);
    padding: 96px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download-zone::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 56px 56px;
    pointer-events: none;
}

.download-zone .container {
    position: relative;
    z-index: 2;
}

.download-zone .section-kicker {
    justify-content: center;
    color: var(--primary);
}

.download-zone .section-kicker::before {
    background: var(--primary);
}

.download-zone h2 {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}

.download-zone .lead {
    color: #9CA3AF;
    font-size: 16px;
    margin-bottom: 48px;
}

.download-main-btn {
    margin-bottom: 28px;
}

.platform-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 680px;
    margin: 0 auto;
}

.platform-buttons .btn-outline-light {
    min-width: 150px;
    padding: 12px 22px;
}

@media (max-width: 768px) {
    .download-zone {
        padding: 64px 0;
    }
    .download-zone h2 {
        font-size: 26px;
    }
    .platform-buttons {
        flex-direction: column;
        max-width: 280px;
    }
    .platform-buttons .btn-outline-light {
        width: 100%;
    }
    .btn-download-main {
        width: 100%;
        max-width: 320px;
    }
}

/* ===== News Section ===== */
.news-section {
    background: var(--bg);
    padding: 80px 0;
}

.news-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border-radius: var(--radius-card);
    padding: 16px;
    border: 1px solid rgba(107,114,128,0.1);
    box-shadow: var(--shadow-normal);
    transition: var(--transition);
    align-items: center;
}

.news-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.news-thumb {
    flex-shrink: 0;
    width: 150px;
    height: 96px;
    border-radius: var(--radius-img);
    overflow: hidden;
    background: var(--bg-soft);
}

.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.news-item:hover .news-thumb img {
    transform: scale(1.05);
}

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

.news-content h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.4;
    color: var(--text-main);
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item:hover .news-content h3 {
    color: var(--primary-hover);
}

.news-content p {
    font-size: 14px;
    color: var(--text-second);
    margin-bottom: 10px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-second);
    flex-wrap: wrap;
}

.news-meta time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.news-meta .news-more {
    margin-left: auto;
    color: var(--primary-hover);
    font-weight: 600;
    font-size: 13px;
}

.news-empty {
    text-align: center;
    padding: 48px 24px;
    background: #fff;
    border-radius: var(--radius-card);
    border: 1px dashed var(--line-color);
    color: var(--text-second);
    font-size: 15px;
}

@media (max-width: 768px) {
    .news-section {
        padding: 48px 0;
    }
    .news-item {
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
    }
    .news-thumb {
        width: 100%;
        height: 180px;
    }
    .news-meta .news-more {
        margin-left: 0;
    }
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--bg-soft);
    padding: 80px 0;
}

.faq-layout {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 60px;
    align-items: flex-start;
}

.faq-left {
    position: sticky;
    top: 100px;
}

.faq-left h2 {
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 14px;
}

.faq-left p {
    color: var(--text-second);
    margin-bottom: 24px;
}

.faq-left .btn {
    padding: 12px 28px;
}

.accordion-custom {
    background: #fff;
    border-radius: var(--radius-card);
    border: 1px solid rgba(107,114,128,0.1);
    padding: 8px 24px;
    box-shadow: var(--shadow-normal);
}

.accordion-custom .accordion-item {
    border: none;
    background: transparent;
    border-bottom: 1px solid var(--line-color);
}

.accordion-custom .accordion-item:last-child {
    border-bottom: none;
}

.accordion-custom .accordion-header {
    background: transparent;
}

.accordion-custom .accordion-button {
    background: transparent;
    box-shadow: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    padding: 20px 0;
    border: none;
    position: relative;
}

.accordion-custom .accordion-button:not(.collapsed) {
    color: var(--text-main);
    background: transparent;
}

.accordion-custom .accordion-button::after {
    content: "\f067";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    background-image: none;
    width: auto;
    height: auto;
    font-size: 14px;
    color: var(--text-second);
    transition: transform .3s ease;
}

.accordion-custom .accordion-button:not(.collapsed)::after {
    transform: rotate(45deg);
    content: "\f068";
    color: var(--primary-hover);
}

.accordion-custom .accordion-button:focus {
    box-shadow: none;
    border: none;
}

.accordion-custom .accordion-body {
    padding: 0 0 20px;
    font-size: 15px;
    color: var(--text-second);
    line-height: 1.7;
}

@media (max-width: 991.98px) {
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .faq-left {
        position: static;
    }
}

/* ===== CTA Banner ===== */
.cta-banner {
    background: var(--bg-deep);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-banner::after {
    content: "";
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: rgba(0,229,153,0.06);
    top: -200px;
    right: -120px;
    pointer-events: none;
}

.cta-banner h2 {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.cta-banner p {
    color: #9CA3AF;
    font-size: 16px;
    margin-bottom: 28px;
}

.cta-banner .btn-primary {
    padding: 14px 44px;
    font-size: 16px;
}

@media (max-width: 768px) {
    .cta-banner {
        padding: 48px 0;
    }
    .cta-banner h2 {
        font-size: 24px;
    }
}

/* ===== Footer ===== */
.site-footer {
    background: #0B0F14;
    color: #9CA3AF;
    padding: 72px 0 32px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 4fr 2fr 3fr 3fr;
    gap: 40px;
    margin-bottom: 56px;
}

.footer-brand .brand {
    margin-bottom: 16px;
}

.footer-brand .brand .brand-mark {
    background: rgba(255,255,255,0.06);
    border-color: rgba(0,229,153,0.3);
}

.footer-brand .brand .brand-name {
    color: #fff;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
    margin-bottom: 0;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
    font-size: 14px;
}

.footer-col ul li a {
    color: #9CA3AF;
    transition: var(--transition);
}

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

.footer-col ul li i {
    width: 20px;
    color: var(--primary);
    margin-right: 6px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
}

@media (max-width: 991.98px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 576px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== Utility ===== */
.text-primary-brand {
    color: var(--primary);
}

.bg-deep {
    background: var(--bg-deep);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* roulang page: article */
:root {
        --bg: #F7F8FA;
        --dark: #0B0F14;
        --dark-soft: #141A21;
        --primary: #00E599;
        --primary-hover: #00C884;
        --primary-weak: rgba(0, 229, 153, 0.12);
        --gold: #C9A96E;
        --text: #1A1D21;
        --text-weak: #6B7280;
        --text-mute: #9CA3AF;
        --border: #E5E7EB;
        --border-weak: rgba(107, 114, 128, 0.16);
        --radius-lg: 16px;
        --radius-md: 12px;
        --radius-sm: 8px;
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
        --shadow-hover: 0 24px 60px rgba(0, 0, 0, 0.10);
        --container: 1200px;
        --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        -webkit-text-size-adjust: 100%;
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font);
        background-color: var(--bg);
        color: var(--text);
        font-size: 16px;
        line-height: 1.75;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--text);
        text-decoration: none;
        transition: all .25s ease;
    }
    a:hover {
        color: var(--primary-hover);
    }
    button,
    input,
    textarea,
    select {
        font-family: inherit;
        font-size: inherit;
        transition: all .25s ease;
    }
    .container {
        max-width: var(--container);
        padding-left: 24px;
        padding-right: 24px;
    }

    /* ========== Header ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1030;
        background: rgba(255, 255, 255, 0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
    }
    .header-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 72px;
        gap: 24px;
    }
    .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
    }
    .brand-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--dark);
        color: var(--primary);
        font-size: 18px;
        font-weight: 800;
        border-radius: 10px;
        letter-spacing: -0.02em;
    }
    .brand-name {
        font-size: 20px;
        font-weight: 800;
        color: var(--dark);
        letter-spacing: -0.02em;
        line-height: 1.2;
    }
    .brand-name em {
        font-style: normal;
        color: var(--primary);
    }
    .desktop-nav {
        display: flex;
        align-items: center;
        flex: 1;
        justify-content: center;
    }
    .desktop-nav ul {
        list-style: none;
        display: flex;
        gap: 32px;
        margin: 0;
        padding: 0;
    }
    .nav-link-item {
        position: relative;
        display: inline-block;
        font-size: 15px;
        font-weight: 600;
        color: var(--text-weak);
        padding: 8px 2px;
        line-height: 1.4;
    }
    .nav-link-item::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: width .25s ease;
        border-radius: 2px;
    }
    .nav-link-item:hover {
        color: var(--dark);
    }
    .nav-link-item:hover::after {
        width: 100%;
    }
    .nav-link-item.active {
        color: var(--dark);
    }
    .nav-link-item.active::after {
        width: 100%;
    }
    .header-actions {
        display: flex;
        align-items: center;
        gap: 14px;
        flex-shrink: 0;
    }
    .btn-download-header {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 22px;
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-sm);
        border: none;
        background: var(--primary);
        color: var(--dark);
        white-space: nowrap;
        transition: all .25s ease;
    }
    .btn-download-header:hover {
        background: var(--primary-hover);
        color: var(--dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(0, 229, 153, 0.25);
    }
    .nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 40px;
        height: 40px;
        background: transparent;
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 8px;
        cursor: pointer;
    }
    .nav-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--dark);
        border-radius: 2px;
        transition: all .25s ease;
    }
    .nav-toggle:hover span {
        background: var(--primary);
    }
    .mobile-menu {
        border-top: 1px solid var(--border);
        padding: 12px 0;
    }
    .mobile-menu ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .mobile-menu li {
        padding: 8px 0;
    }
    .mobile-menu .nav-link-item {
        font-size: 16px;
        display: block;
        padding: 10px 0;
    }
    .mobile-menu .nav-link-item::after {
        display: none;
    }
    .mobile-menu .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        width: 100%;
        justify-content: center;
        margin-top: 8px;
        background: var(--primary);
        border: none;
        color: var(--dark);
        font-weight: 600;
        padding: 12px 20px;
        border-radius: var(--radius-sm);
    }
    .mobile-menu .btn-primary:hover {
        background: var(--primary-hover);
    }

    /* ========== Buttons ========== */
    .btn {
        border-radius: var(--radius-sm);
        font-size: 15px;
        font-weight: 600;
        padding: 10px 20px;
        border: 2px solid transparent;
        transition: all .25s ease;
    }
    .btn-primary {
        background: var(--primary);
        border-color: var(--primary);
        color: var(--dark);
    }
    .btn-primary:hover,
    .btn-primary:focus,
    .btn-primary:active {
        background: var(--primary-hover) !important;
        border-color: var(--primary-hover) !important;
        color: var(--dark) !important;
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(0, 229, 153, 0.25);
    }
    .btn-outline-light-custom {
        background: transparent;
        border: 2px solid rgba(255, 255, 255, 0.5);
        color: #fff;
    }
    .btn-outline-light-custom:hover {
        border-color: var(--primary);
        color: var(--primary);
        transform: translateY(-2px);
    }
    .btn-lg-custom {
        padding: 14px 32px;
        font-size: 16px;
        border-radius: var(--radius-sm);
    }

    /* ========== Breadcrumb ========== */
    .breadcrumb-wrap {
        padding: 28px 0 12px;
    }
    .breadcrumb-wrap .breadcrumb {
        margin: 0;
        font-size: 13px;
        color: var(--text-weak);
    }
    .breadcrumb-wrap .breadcrumb a {
        color: var(--text-weak);
    }
    .breadcrumb-wrap .breadcrumb a:hover {
        color: var(--primary-hover);
    }
    .breadcrumb-wrap .breadcrumb-item.active {
        color: var(--text-weak);
        max-width: 260px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
        color: var(--border);
        content: "/";
    }

    /* ========== Article Page ========== */
    .article-page {
        padding: 32px 0 80px;
    }
    .article-card {
        max-width: 780px;
        margin: 0 auto;
    }
    .article-header {
        padding: 24px 0 32px;
        border-bottom: 1px solid var(--border);
        margin-bottom: 40px;
    }
    .article-header h1 {
        font-size: 40px;
        font-weight: 800;
        line-height: 1.25;
        letter-spacing: -0.02em;
        color: var(--dark);
        margin-bottom: 20px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 16px 24px;
        font-size: 13px;
        color: var(--text-weak);
        align-items: center;
    }
    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta i {
        color: var(--primary);
        width: 14px;
        text-align: center;
    }
    .article-meta .meta-cat {
        background: var(--primary-weak);
        color: #00875A;
        padding: 3px 12px;
        border-radius: 4px;
        font-weight: 600;
        font-size: 12px;
    }
    .article-meta .meta-author {
        font-weight: 600;
        color: var(--dark);
    }

    /* ========== Article Body ========== */
    .article-body {
        font-size: 16px;
        line-height: 1.9;
        color: var(--text);
    }
    .article-body p {
        margin-bottom: 24px;
    }
    .article-body h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--dark);
        margin-top: 48px;
        margin-bottom: 20px;
        letter-spacing: -0.01em;
        line-height: 1.4;
        padding-top: 8px;
        border-top: 1px solid var(--border);
        padding-top: 24px;
    }
    .article-body h2:first-child {
        border-top: none;
        padding-top: 0;
        margin-top: 0;
    }
    .article-body h3 {
        font-size: 20px;
        font-weight: 600;
        color: var(--dark);
        margin-top: 36px;
        margin-bottom: 16px;
        line-height: 1.4;
    }
    .article-body h4 {
        font-size: 17px;
        font-weight: 600;
        color: var(--dark);
        margin-top: 28px;
        margin-bottom: 14px;
    }
    .article-body ul,
    .article-body ol {
        margin-bottom: 24px;
        padding-left: 1.4em;
    }
    .article-body li {
        margin-bottom: 8px;
        line-height: 1.8;
    }
    .article-body blockquote {
        border-left: 4px solid var(--primary);
        background: var(--primary-weak);
        margin: 28px 0;
        padding: 16px 24px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        font-size: 15px;
        color: var(--text);
    }
    .article-body blockquote p {
        margin-bottom: 0;
    }
    .article-body img {
        border-radius: var(--radius-md);
        margin: 32px 0;
        box-shadow: var(--shadow);
    }
    .article-body table {
        width: 100%;
        margin: 28px 0;
        border-collapse: collapse;
        font-size: 15px;
    }
    .article-body table th {
        background: var(--dark);
        color: #fff;
        font-weight: 600;
        padding: 12px 16px;
        text-align: left;
    }
    .article-body table td {
        padding: 10px 16px;
        border-bottom: 1px solid var(--border);
    }
    .article-body table tr:hover td {
        background: rgba(0, 229, 153, 0.04);
    }
    .article-body code {
        background: #F0F1F3;
        border-radius: 4px;
        padding: 2px 8px;
        font-family: "SF Mono", "Fira Code", Consolas, monospace;
        font-size: 14px;
        color: #D6336C;
    }
    .article-body pre {
        background: var(--dark);
        color: #E5E7EB;
        border-radius: var(--radius-md);
        padding: 20px 24px;
        overflow-x: auto;
        margin: 28px 0;
        line-height: 1.6;
        font-size: 14px;
    }
    .article-body pre code {
        background: transparent;
        color: inherit;
        padding: 0;
        border-radius: 0;
    }
    .article-body a {
        color: #00875A;
        text-decoration: underline;
        text-underline-offset: 3px;
    }
    .article-body a:hover {
        color: var(--primary-hover);
    }

    /* ========== Article Tags ========== */
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 40px;
        padding-top: 28px;
        border-top: 1px solid var(--border);
    }
    .article-tags .tag {
        display: inline-block;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 5px 14px;
        font-size: 13px;
        color: var(--text-weak);
        cursor: default;
        transition: all .25s ease;
    }
    .article-tags .tag:hover {
        border-color: var(--primary);
        color: var(--primary-hover);
        background: var(--primary-weak);
    }

    /* ========== Article Nav ========== */
    .article-nav {
        display: flex;
        justify-content: space-between;
        gap: 24px;
        margin-top: 40px;
        padding-top: 28px;
        border-top: 1px solid var(--border);
    }
    .article-nav-item {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 16px 20px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        flex: 1;
        max-width: 360px;
        transition: all .25s ease;
    }
    .article-nav-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow);
        transform: translateY(-2px);
        color: var(--dark);
    }
    .article-nav-item .nav-label {
        font-size: 12px;
        color: var(--text-weak);
        display: block;
        margin-bottom: 4px;
    }
    .article-nav-item .nav-title {
        font-size: 15px;
        font-weight: 600;
        color: var(--dark);
        line-height: 1.4;
    }
    .article-nav-item i {
        color: var(--primary);
        font-size: 14px;
    }
    .article-nav-item.text-end {
        text-align: right;
        flex-direction: row-reverse;
        margin-left: auto;
    }

    /* ========== Related Section ========== */
    .related-section {
        background: #fff;
        border-top: 1px solid var(--border);
        padding: 80px 0;
    }
    .related-header {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 40px;
    }
    .related-header h2 {
        font-size: 32px;
        font-weight: 700;
        color: var(--dark);
        letter-spacing: -0.02em;
        margin: 0;
    }
    .related-header h2 span {
        color: var(--primary);
    }
    .related-header .related-sub {
        font-size: 14px;
        color: var(--text-weak);
    }
    .related-list {
        max-width: 780px;
        margin: 0 auto;
    }
    .related-item {
        display: flex;
        align-items: center;
        gap: 20px;
        padding: 16px 20px;
        border-radius: var(--radius-md);
        border: 1px solid var(--border);
        background: #fff;
        margin-bottom: 16px;
        transition: all .25s ease;
    }
    .related-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow);
        transform: translateY(-2px);
    }
    .related-thumb {
        width: 120px;
        height: 80px;
        border-radius: var(--radius-sm);
        object-fit: cover;
        flex-shrink: 0;
    }
    .related-info {
        flex: 1;
        min-width: 0;
    }
    .related-info h4 {
        font-size: 16px;
        font-weight: 600;
        color: var(--dark);
        margin: 0 0 6px;
        line-height: 1.4;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .related-info h4 a {
        color: var(--dark);
    }
    .related-info h4 a:hover {
        color: var(--primary-hover);
    }
    .related-meta {
        display: flex;
        gap: 16px;
        font-size: 13px;
        color: var(--text-weak);
    }
    .related-meta i {
        color: var(--primary);
        font-size: 12px;
        margin-right: 4px;
    }
    .related-arrow {
        color: var(--text-mute);
        font-size: 16px;
        flex-shrink: 0;
    }
    .related-item:hover .related-arrow {
        color: var(--primary);
        transform: translateX(4px);
    }
    .back-link {
        text-align: center;
        margin-top: 40px;
    }
    .back-link a {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--text-weak);
        font-size: 14px;
        font-weight: 600;
        padding: 10px 24px;
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        background: #fff;
    }
    .back-link a:hover {
        color: var(--dark);
        border-color: var(--primary);
        transform: translateY(-2px);
        box-shadow: var(--shadow);
    }

    /* ========== CTA Section ========== */
    .cta-section {
        background: var(--dark);
        padding: 80px 0;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: radial-gradient(circle at 70% 100%, rgba(0, 229, 153, 0.08) 0%, transparent 60%);
    }
    .cta-inner {
        position: relative;
        text-align: center;
        max-width: 640px;
        margin: 0 auto;
    }
    .cta-inner h2 {
        color: #fff;
        font-size: 32px;
        font-weight: 700;
        letter-spacing: -0.02em;
        margin-bottom: 16px;
    }
    .cta-inner h2 span {
        color: var(--primary);
    }
    .cta-inner p {
        color: var(--text-mute);
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 32px;
    }
    .cta-buttons {
        display: flex;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* ========== Footer ========== */
    .site-footer {
        background: var(--dark);
        color: var(--text-mute);
        padding: 64px 0 0;
        font-size: 14px;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-brand .brand {
        margin-bottom: 16px;
    }
    .footer-brand .brand-name {
        color: #fff;
    }
    .footer-brand p {
        color: var(--text-mute);
        line-height: 1.7;
        max-width: 280px;
        font-size: 14px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 15px;
        font-weight: 600;
        margin-bottom: 20px;
    }
    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-col li {
        margin-bottom: 12px;
        line-height: 1.5;
    }
    .footer-col a {
        color: var(--text-mute);
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }
    .footer-col a:hover {
        color: var(--primary);
    }
    .footer-col i {
        color: var(--primary);
        font-size: 13px;
        width: 16px;
    }
    .footer-bottom {
        display: flex;
        justify-content: space-between;
        gap: 16px;
        padding: 24px 0;
        font-size: 13px;
        color: rgba(255, 255, 255, 0.45);
        flex-wrap: wrap;
    }
    .footer-bottom p {
        margin: 0;
    }

    /* ========== Not Found ========== */
    .not-found {
        text-align: center;
        padding: 80px 24px;
        max-width: 600px;
        margin: 0 auto;
    }
    .not-found .nf-icon {
        font-size: 56px;
        color: var(--primary);
        margin-bottom: 24px;
    }
    .not-found h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 12px;
    }
    .not-found p {
        color: var(--text-weak);
        margin-bottom: 24px;
    }

    /* ========== Responsive ========== */
    @media (max-width: 992px) {
        .desktop-nav {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .header-row {
            height: 64px;
        }
        .btn-download-header {
            padding: 8px 16px;
            font-size: 14px;
        }
    }
    @media (max-width: 768px) {
        .article-header h1 {
            font-size: 30px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .related-header {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }
        .related-item {
            flex-direction: row;
            align-items: flex-start;
            padding: 14px;
        }
        .related-thumb {
            width: 96px;
            height: 72px;
        }
        .article-nav {
            flex-direction: column;
            gap: 12px;
        }
        .article-nav-item,
        .article-nav-item.text-end {
            max-width: 100%;
            margin-left: 0;
        }
        .cta-section {
            padding: 56px 0;
        }
        .cta-inner h2 {
            font-size: 26px;
        }
        .cta-buttons {
            flex-direction: column;
            align-items: stretch;
        }
    }
    @media (max-width: 576px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .brand-name {
            font-size: 17px;
        }
        .brand-mark {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }
        .btn-download-header {
            padding: 8px 12px;
            font-size: 13px;
            gap: 6px;
        }
        .btn-download-header i {
            font-size: 12px;
        }
        .article-page {
            padding: 20px 0 56px;
        }
        .article-header {
            padding: 16px 0 24px;
            margin-bottom: 28px;
        }
        .article-header h1 {
            font-size: 24px;
            line-height: 1.3;
        }
        .article-meta {
            gap: 10px 16px;
            font-size: 12px;
        }
        .article-body {
            font-size: 15px;
            line-height: 1.85;
        }
        .article-body h2 {
            font-size: 22px;
            margin-top: 36px;
        }
        .article-body blockquote {
            padding: 14px 18px;
            font-size: 14px;
        }
        .article-body table {
            font-size: 13px;
            display: block;
            overflow-x: auto;
        }
        .article-tags {
            gap: 8px;
        }
        .article-tags .tag {
            padding: 4px 10px;
            font-size: 12px;
        }
        .related-section {
            padding: 48px 0;
        }
        .related-header h2 {
            font-size: 24px;
        }
        .related-item {
            padding: 12px;
            gap: 12px;
        }
        .related-thumb {
            width: 80px;
            height: 64px;
        }
        .related-info h4 {
            font-size: 14px;
            white-space: normal;
        }
        .related-meta {
            font-size: 12px;
            gap: 10px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }
        .breadcrumb-wrap {
            padding: 20px 0 8px;
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            max-width: 180px;
        }
    }
    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            transition: none !important;
            animation: none !important;
        }
    }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --jp-primary: #00E599;
            --jp-primary-hover: #00C884;
            --jp-gold: #C9A96E;
            --jp-dark: #0B0F14;
            --jp-bg: #F7F8FA;
            --jp-text: #1A1D21;
            --jp-text-secondary: #6B7280;
            --jp-border: #E5E7EB;
            --jp-radius-sm: 8px;
            --jp-radius-md: 12px;
            --jp-radius-lg: 16px;
            --jp-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
            --jp-shadow-hover: 0 24px 60px rgba(0,0,0,0.10);
            --jp-transition: all .25s ease;
            --jp-font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ========== Reset / Base ========== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--jp-font);
            background: var(--jp-bg);
            color: var(--jp-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--jp-transition);
        }
        a:hover {
            color: var(--jp-primary-hover);
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            padding: 12px 22px;
            border-radius: var(--jp-radius-sm);
            border: 1px solid transparent;
            transition: var(--jp-transition);
        }
        .btn-primary {
            background: var(--jp-primary);
            border-color: var(--jp-primary);
            color: var(--jp-dark);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--jp-primary-hover);
            border-color: var(--jp-primary-hover);
            color: var(--jp-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 229, 153, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover,
        .btn-outline-light:focus {
            border-color: var(--jp-primary);
            color: var(--jp-primary);
            background: transparent;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 16px;
            border-radius: 10px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--jp-border);
        }
        .header-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--jp-dark);
            color: var(--jp-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            font-style: normal;
        }
        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--jp-text);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .brand-name em {
            font-style: normal;
            color: var(--jp-primary);
        }
        .desktop-nav ul {
            display: flex;
            gap: 28px;
            margin: 0;
            padding: 0;
        }
        .desktop-nav .nav-link-item {
            display: inline-block;
            font-size: 15px;
            font-weight: 500;
            color: var(--jp-text-secondary);
            position: relative;
            padding: 8px 2px;
        }
        .nav-link-item::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--jp-primary);
            transition: width .25s ease;
        }
        .nav-link-item:hover,
        .nav-link-item.active {
            color: var(--jp-text);
        }
        .nav-link-item:hover::after,
        .nav-link-item.active::after {
            width: 100%;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn-download-header {
            padding: 10px 22px;
            font-size: 15px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            padding: 8px;
            cursor: pointer;
        }
        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--jp-text);
            border-radius: 2px;
            transition: var(--jp-transition);
        }
        .mobile-menu {
            border-top: 1px solid var(--jp-border);
            padding: 12px 0 16px;
        }
        .mobile-menu ul {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0;
            margin: 0;
        }
        .mobile-menu li a {
            display: flex;
            align-items: center;
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--jp-text);
        }
        .mobile-menu li a:hover,
        .mobile-menu li a.active {
            background: rgba(0, 229, 153, 0.08);
            color: var(--jp-text);
        }
        .mobile-menu .btn {
            margin-top: 10px;
            justify-content: center;
        }

        /* ========== 页面横幅 ========== */
        .page-banner {
            background: #F0F2F5 url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--jp-border);
            position: relative;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(247, 248, 250, 0.82);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-nav {
            font-size: 13px;
            color: var(--jp-text-secondary);
            margin-bottom: 14px;
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .breadcrumb-nav a {
            color: var(--jp-text-secondary);
        }
        .breadcrumb-nav a:hover {
            color: var(--jp-primary);
        }
        .breadcrumb-nav .sep {
            color: #B0B5BC;
        }
        .banner-eyebrow {
            font-size: 13px;
            font-weight: 600;
            color: var(--jp-primary);
            letter-spacing: 0.1em;
            margin-bottom: 6px;
            text-transform: uppercase;
        }
        .page-banner h1 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--jp-text);
            margin-bottom: 8px;
        }
        .banner-desc {
            font-size: 16px;
            color: var(--jp-text-secondary);
            max-width: 660px;
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========== 主内容区 ========== */
        .category-main {
            padding: 56px 0 80px;
        }
        .content-section {
            margin-bottom: 40px;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 22px;
            padding-left: 16px;
            position: relative;
        }
        .section-head::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            bottom: 5px;
            width: 4px;
            border-radius: 2px;
            background: var(--jp-primary);
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 0;
            letter-spacing: -0.01em;
        }
        .section-tag {
            font-size: 13px;
            color: var(--jp-text-secondary);
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: 20px;
            padding: 4px 12px;
            white-space: nowrap;
        }

        /* 时间线 / 日程列表 */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .schedule-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: var(--jp-radius-lg);
            padding: 18px 20px;
            box-shadow: var(--jp-shadow);
            transition: var(--jp-transition);
        }
        .schedule-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--jp-shadow-hover);
        }
        .schedule-item .date-block {
            flex-shrink: 0;
            width: 66px;
            height: 66px;
            border-radius: 12px;
            background: var(--jp-dark);
            color: #fff;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            line-height: 1;
        }
        .date-block .month {
            font-size: 12px;
            letter-spacing: 0.1em;
            color: var(--jp-primary);
            font-weight: 600;
            margin-bottom: 5px;
        }
        .date-block .day {
            font-size: 24px;
            font-weight: 800;
        }
        .schedule-info {
            flex: 1;
            min-width: 0;
        }
        .schedule-info .game-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--jp-primary);
            background: rgba(0, 229, 153, 0.1);
            border-radius: 4px;
            padding: 2px 8px;
        }
        .schedule-info h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 6px 0 2px;
            color: var(--jp-text);
            line-height: 1.4;
        }
        .schedule-info p {
            font-size: 14px;
            color: var(--jp-text-secondary);
            margin: 0;
        }
        .schedule-status {
            flex-shrink: 0;
            font-size: 13px;
            font-weight: 600;
            color: var(--jp-text-secondary);
            background: #F3F4F6;
            border-radius: 20px;
            padding: 6px 14px;
            white-space: nowrap;
        }
        .schedule-status.finished {
            color: #4B5563;
        }
        .schedule-status.ongoing {
            color: #059669;
            background: rgba(0, 229, 153, 0.12);
        }
        .schedule-status.upcoming {
            color: var(--jp-gold);
            background: rgba(201, 169, 110, 0.1);
        }

        /* 重点赛事图文 */
        .feature-race {
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: var(--jp-radius-lg);
            padding: 28px;
            box-shadow: var(--jp-shadow);
        }
        .feature-image {
            border-radius: var(--jp-radius-md);
            overflow: hidden;
            position: relative;
        }
        .feature-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .feature-image:hover img {
            transform: scale(1.03);
        }
        .eyebrow {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--jp-gold);
            margin-bottom: 8px;
        }
        .feature-text h2 {
            font-size: 25px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .feature-text p {
            font-size: 15px;
            color: var(--jp-text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .feature-points {
            margin: 0 0 20px;
            padding: 0;
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .feature-points li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--jp-text);
        }
        .feature-points li i {
            color: var(--jp-primary);
            margin-top: 5px;
            font-size: 13px;
            flex-shrink: 0;
        }
        .feature-text .btn {
            margin-top: 4px;
        }

        /* 热门资讯横向条目 */
        .race-articles .article-row {
            display: flex;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: var(--jp-radius-lg);
            padding: 18px;
            margin-bottom: 14px;
            box-shadow: var(--jp-shadow);
            transition: var(--jp-transition);
        }
        .race-articles .article-row:last-child {
            margin-bottom: 0;
        }
        .race-articles .article-row:hover {
            transform: translateY(-4px);
            box-shadow: var(--jp-shadow-hover);
        }
        .article-thumb {
            flex-shrink: 0;
            width: 170px;
            height: 106px;
            border-radius: var(--jp-radius-md);
            overflow: hidden;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .article-row:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-row-body {
            flex: 1;
            min-width: 0;
        }
        .article-row-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .article-row-body h3 a {
            color: var(--jp-text);
        }
        .article-row-body h3 a:hover {
            color: var(--jp-primary);
        }
        .article-row-body p {
            font-size: 14px;
            color: var(--jp-text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--jp-text-secondary);
        }
        .article-meta i {
            font-size: 12px;
            margin-right: 4px;
            color: var(--jp-gold);
        }

        /* FAQ */
        .faq-section {
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: var(--jp-radius-lg);
            padding: 28px;
            box-shadow: var(--jp-shadow);
        }
        .accordion {
            --bs-accordion-border-color: transparent;
            --bs-accordion-border-width: 0;
            --bs-accordion-bg: transparent;
            --bs-accordion-btn-focus-box-shadow: none;
            --bs-accordion-active-bg: transparent;
            --bs-accordion-active-color: var(--jp-text);
            --bs-accordion-btn-padding-x: 0;
            --bs-accordion-btn-padding-y: 18px;
            --bs-accordion-body-padding-x: 0;
            --bs-accordion-body-padding-y: 0 0 20px;
        }
        .accordion-item {
            border-bottom: 1px solid var(--jp-border);
            border-radius: 0 !important;
            background: transparent;
        }
        .accordion-item:first-child {
            border-top: 1px solid var(--jp-border);
        }
        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--jp-text);
            background: transparent;
            box-shadow: none;
            padding: 18px 0;
            font-family: var(--jp-font);
        }
        .accordion-button::after {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            content: "";
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%231A1D21' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center / 20px no-repeat;
            transition: transform .25s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2300E599' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
        }
        .accordion-button:not(.collapsed) {
            color: var(--jp-text);
            background: transparent;
            box-shadow: none;
        }
        .accordion-body {
            font-size: 15px;
            color: var(--jp-text-secondary);
            line-height: 1.7;
            padding: 0 0 20px;
        }

        /* ========== 侧栏 ========== */
        .sidebar-widget {
            background: #fff;
            border: 1px solid var(--jp-border);
            border-radius: var(--jp-radius-lg);
            padding: 22px;
            margin-bottom: 24px;
            box-shadow: var(--jp-shadow);
        }
        .sidebar-widget h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--jp-text);
            padding-bottom: 12px;
            border-bottom: 2px solid var(--jp-dark);
            margin-bottom: 16px;
            position: relative;
        }
        .sidebar-widget h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 32px;
            height: 2px;
            background: var(--jp-primary);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-list a {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--jp-bg);
            border: 1px solid var(--jp-border);
            color: var(--jp-text-secondary);
            transition: var(--jp-transition);
        }
        .tag-list a:hover {
            background: var(--jp-primary);
            border-color: var(--jp-primary);
            color: var(--jp-dark);
        }
        .notice-list {
            margin: 0;
            padding: 0;
        }
        .notice-list li {
            display: flex;
            flex-direction: column;
            padding: 10px 0;
            border-bottom: 1px dashed var(--jp-border);
            font-size: 14px;
            color: var(--jp-text);
        }
        .notice-list li:last-child {
            border-bottom: none;
        }
        .notice-list li .notice-title {
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .notice-list li .notice-title i {
            color: var(--jp-gold);
            margin-top: 4px;
            font-size: 12px;
            flex-shrink: 0;
        }
        .notice-list li .notice-time {
            font-size: 12px;
            color: var(--jp-text-secondary);
            margin-top: 2px;
            padding-left: 20px;
        }
        .sidebar-cta {
            background: linear-gradient(rgba(11, 15, 20, 0.88), rgba(11, 15, 20, 0.88)), url('/assets/images/coverpic/cover-7.webp') center / cover no-repeat;
            border: none;
            color: #fff;
        }
        .sidebar-cta h3 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.25);
        }
        .sidebar-cta p {
            font-size: 14px;
            color: #9CA3AF;
            margin-bottom: 18px;
            line-height: 1.6;
        }
        .sidebar-cta .btn {
            background: var(--jp-primary);
            border: none;
            color: var(--jp-dark);
        }
        .sidebar-cta .btn:hover {
            background: var(--jp-primary-hover);
            transform: translateY(-2px);
        }

        /* ========== CTA 区块 ========== */
        .cta-section {
            background: var(--jp-dark) url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            position: relative;
            padding: 80px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 15, 20, 0.88);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .cta-inner p {
            color: #9CA3AF;
            font-size: 16px;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .cta-buttons .btn-primary {
            background: var(--jp-primary);
            border-color: var(--jp-primary);
            color: var(--jp-dark);
            min-width: 200px;
        }
        .cta-buttons .btn-primary:hover {
            background: var(--jp-primary-hover);
            border-color: var(--jp-primary-hover);
            transform: translateY(-2px);
        }
        .cta-note {
            font-size: 14px;
            color: #6B7280 !important;
            margin-bottom: 0 !important;
        }
        .cta-note i {
            margin: 0 4px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--jp-dark);
            color: #9CA3AF;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand .brand-mark {
            background: #1A1D21;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand .brand .brand-name {
            color: #fff;
        }
        .footer-brand .brand .brand-name em {
            color: var(--jp-primary);
            font-style: normal;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 240px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li {
            font-size: 14px;
            line-height: 1.5;
        }
        .footer-col ul a {
            color: #9CA3AF;
            transition: var(--jp-transition);
        }
        .footer-col ul a:hover {
            color: var(--jp-primary);
        }
        .footer-col ul li i {
            margin-right: 8px;
            color: var(--jp-primary);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            padding: 20px 0;
            font-size: 13px;
            color: #6B7280;
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991.98px) {
            .desktop-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.collapse:not(.show) {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .page-banner h1 {
                font-size: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .category-main {
                padding: 40px 0 56px;
            }
            .page-banner {
                padding: 36px 0 30px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .schedule-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .schedule-item .date-block {
                width: 56px;
                height: 56px;
            }
            .schedule-status {
                margin-left: 74px;
                font-size: 12px;
            }
            .feature-race {
                padding: 20px;
            }
            .feature-text h2 {
                font-size: 21px;
                margin-top: 16px;
            }
            .article-thumb {
                width: 110px;
                height: 82px;
            }
            .article-row-body h3 {
                font-size: 15px;
            }
            .article-row-body p {
                -webkit-line-clamp: 2;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-buttons .btn {
                width: 100%;
                min-width: 0;
            }
        }
        @media (max-width: 575.98px) {
            .header-row {
                height: 62px;
            }
            .brand-name {
                font-size: 18px;
            }
            .btn-download-header {
                padding: 8px 14px;
                font-size: 14px;
            }
            .section-tag {
                display: none;
            }
            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }
            .schedule-info h3 {
                font-size: 16px;
            }
            .schedule-status {
                margin-left: 0;
                align-self: flex-start;
            }
            .article-row {
                flex-direction: column;
                padding: 14px;
            }
            .article-thumb {
                width: 100%;
                height: 140px;
            }
            .feature-points li {
                font-size: 13px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-inner p {
                font-size: 15px;
            }
            .faq-section {
                padding: 20px;
            }
        }
        @media (min-width: 992px) {
            .mobile-menu {
                display: none !important;
            }
        }

/* roulang page: category2 */
:root {
  --bg: #F7F8FA;
  --dark: #0B0F14;
  --primary: #00E599;
  --primary-hover: #00C884;
  --accent: #C9A96E;
  --text: #1A1D21;
  --text-weak: #6B7280;
  --border: #E5E7EB;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.10);
  --transition: all .25s ease;
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, select { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; }
::selection { background: rgba(0, 229, 153, 0.25); }

/* Buttons */
.btn {
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1.5px solid transparent;
  transition: var(--transition);
  line-height: 1.2;
}
.btn:focus, .btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(0, 229, 153, 0.2);
}
.btn-primary {
  background: var(--primary);
  color: #06251B;
  border-color: var(--primary);
}
.btn-primary:hover, .btn-primary:active {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #06251B;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 229, 153, 0.3);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 30px; font-size: 16px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { padding-top: 12px; padding-bottom: 12px; }
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #06251B;
  font-size: 20px;
  font-weight: 800;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -0.02em;
  box-shadow: 0 2px 8px rgba(0, 229, 153, 0.25);
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.1;
}
.brand-name em {
  font-style: normal;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  margin-left: 2px;
}
.desktop-nav ul {
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-link-item {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  padding: 8px 2px;
  position: relative;
  display: inline-block;
}
.nav-link-item::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
  border-radius: 2px;
}
.nav-link-item:hover { color: var(--text); }
.nav-link-item:hover::after { width: 100%; }
.nav-link-item.active { color: var(--text); font-weight: 600; }
.nav-link-item.active::after { width: 100%; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.btn-download-header {
  padding: 10px 22px;
  font-size: 14px;
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  padding: 12px 0 4px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}
.mobile-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.mobile-menu li { margin-bottom: 4px; }
.mobile-menu .nav-link-item {
  display: block;
  padding: 10px 4px;
  border-radius: 8px;
  font-size: 15px;
}
.mobile-menu .nav-link-item:hover { background: rgba(0, 229, 153, 0.06); }
.mobile-menu .btn {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
}

/* Category Banner */
.category-banner {
  background: #EEF0F3;
  border-bottom: 1px solid var(--border);
  padding: 40px 0;
  position: relative;
  overflow: hidden;
}
.category-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.category-banner .container { position: relative; z-index: 1; }
.banner-content h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--text);
}
.banner-content p {
  font-size: 15px;
  color: var(--text-weak);
  max-width: 640px;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Main Layout */
.page-main {
  padding: 56px 0 80px;
}
.main-content .content-section {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 36px;
  margin-bottom: 28px;
  border: 1px solid rgba(107,114,128,0.10);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.main-content .content-section:hover {
  box-shadow: var(--shadow-lg);
}
.content-section .section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-hover);
  background: rgba(0, 229, 153, 0.12);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}
.content-section h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.content-section > p {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 640px;
}

/* Feature Media */
.feature-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 24px;
  position: relative;
  border: 1px solid rgba(107,114,128,0.12);
}
.feature-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.media-caption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-weak);
  background: #fAfbfC;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.media-caption::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}

/* Platform List */
.platform-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.platform-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  background: #fff;
}
.platform-item:hover {
  border-color: rgba(0, 229, 153, 0.4);
  box-shadow: var(--shadow);
  transform: translateX(4px);
}
.platform-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary-hover);
  background: rgba(0, 229, 153, 0.10);
}
.platform-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 2px;
}
.platform-item p {
  font-size: 13px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.4;
}
.platform-item .btn {
  margin-left: auto;
  flex-shrink: 0;
}

/* Spec List */
.spec-list {
  display: flex;
  flex-direction: column;
  margin: 0;
}
.spec-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}
.spec-row:last-child { border-bottom: none; }
.spec-row dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.spec-row dt::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.spec-row dd {
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.5;
  text-align: right;
}

/* Process Timeline */
.process-timeline {
  position: relative;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.process-item {
  display: flex;
  gap: 20px;
  padding: 18px 0;
  position: relative;
  border-left: 2px solid rgba(0, 229, 153, 0.3);
  padding-left: 24px;
  margin-left: 8px;
}
.process-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 26px;
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(0, 229, 153, 0.15);
}
.step-num {
  font-size: 30px;
  font-weight: 800;
  color: rgba(0, 229, 153, 0.35);
  line-height: 1;
  font-style: italic;
  letter-spacing: -0.02em;
  min-width: 52px;
  margin-top: -2px;
}
.process-item h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 2px 0 4px;
}
.process-item p {
  font-size: 14px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.6;
}

/* FAQ Accordion */
.faq-section .accordion {
  --bs-accordion-border-color: transparent;
  --bs-accordion-border-radius: 0;
  --bs-accordion-inner-border-radius: 0;
  --bs-accordion-bg: transparent;
}
.faq-section .accordion-item {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
}
.faq-section .accordion-item:first-child { border-top: 1px solid var(--border); }
.faq-section .accordion-button {
  background: transparent;
  box-shadow: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  padding: 18px 16px 18px 0;
  transition: var(--transition);
}
.faq-section .accordion-button:not(.collapsed) {
  background: transparent;
  color: var(--primary-hover);
  box-shadow: none;
}
.faq-section .accordion-button::after {
  content: '+';
  background: none;
  font-size: 22px;
  font-weight: 300;
  width: auto;
  height: auto;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease;
  color: var(--text-weak);
}
.faq-section .accordion-button:not(.collapsed)::after {
  transform: rotate(45deg);
  color: var(--primary-hover);
}
.faq-section .accordion-button:focus {
  box-shadow: none;
  outline: 2px solid rgba(0, 229, 153, 0.3);
  outline-offset: -2px;
  border-radius: 4px;
}
.faq-section .accordion-body {
  padding: 0 24px 20px 0;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* CTA Block */
.cta-block {
  background: var(--dark);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  position: relative;
  overflow: hidden;
  text-align: center;
  margin-bottom: 28px;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
}
.cta-block::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  background: rgba(0, 229, 153, 0.08);
  border-radius: 50%;
  pointer-events: none;
}
.cta-block h2 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}
.cta-block p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.cta-block .btn {
  position: relative;
  z-index: 1;
}

/* Sidebar */
.sidebar .sidebar-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid rgba(107,114,128,0.10);
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid rgba(0, 229, 153, 0.3);
  position: relative;
}
.sidebar-card h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 42px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.sidebar-card ul { margin: 0; padding: 0; list-style: none; }
.sidebar-card li { margin-bottom: 12px; }
.sidebar-card li:last-child { margin-bottom: 0; }
.nav-card li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-weak);
  background: transparent;
  transition: var(--transition);
}
.nav-card li a:hover,
.nav-card li a.active {
  background: rgba(0, 229, 153, 0.08);
  color: var(--text);
}
.nav-card li a i { color: var(--primary-hover); width: 18px; text-align: center; }
.notice-card li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}
.notice-card li:last-child { border-bottom: none; }
.notice-card .notice-date {
  font-size: 12px;
  color: var(--text-weak);
  font-weight: 400;
}
.notice-card .notice-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}
.notice-card .notice-text:hover { color: var(--primary-hover); }
.contact-card li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text);
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.contact-card li:last-child { border-bottom: none; }
.contact-card li i {
  color: var(--primary-hover);
  font-size: 16px;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-name em { color: rgba(255,255,255,0.5); }
.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  margin: 16px 0 0;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col li a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col li a:hover { color: var(--primary); }
.footer-col li i { font-size: 13px; width: 16px; text-align: center; color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom p { margin-bottom: 4px; }

/* Bootstrap Overrides */
.accordion { --bs-accordion-btn-focus-box-shadow: none; }
.row { --bs-gutter-x: 24px; }
.collapse:not(.show) { display: none; }
.collapsing {
  height: 0;
  overflow: hidden;
  transition: height 0.3s ease;
}

@media (min-width: 992px) {
  .desktop-nav, .header-actions .btn-download-header { display: flex !important; }
  .nav-toggle, .mobile-menu { display: none !important; }
}

@media (max-width: 991.98px) {
  .desktop-nav { display: none; }
  .header-actions .btn-download-header { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: block; }
  .header-row { flex-wrap: wrap; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .page-main { padding: 40px 0 60px; }
  .main-content .content-section { padding: 28px 24px; }
}

@media (max-width: 767.98px) {
  .banner-content h1 { font-size: 26px; }
  .category-banner { padding: 30px 0; }
  .main-content .content-section { padding: 24px 18px; }
  .content-section h2 { font-size: 22px; }
  .platform-item {
    flex-wrap: wrap;
    padding: 14px;
  }
  .platform-item .btn { margin-left: 0; width: 100%; justify-content: center; }
  .spec-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .spec-row dd { text-align: left; }
  .process-item {
    flex-direction: column;
    gap: 8px;
    padding-left: 18px;
  }
  .step-num { font-size: 24px; }
  .cta-block { padding: 32px 24px; }
  .cta-block h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { text-align: center; }
  .sidebar { margin-top: 40px; }
}