:root {
    --primary: #060b10;
    --secondary1: #c7d2d9;
    --secondary2: #6f8ea3;
    --secondary3: #5c7890;
    --bg-dark: #0a1018;
    --bg-section: #0d151e;
    --bg-card: #111d2a;
    --bg-card-hover: #162535;
    --text-primary: #e8edf1;
    --text-secondary: #a0b4c4;
    --accent: #5c9abf;
    --accent-hover: #74b0d4;
    --border: rgba(108, 142, 163, 0.15);
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
    --radius: 10px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 70px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Header ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 11, 16, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.15rem;
}

.logo:hover {
    color: var(--accent);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

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

.main-nav a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all var(--transition);
    white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
    background: rgba(92, 154, 191, 0.1);
}

.main-nav a i {
    margin-right: 4px;
    font-size: 0.8rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========== Hero ========== */
.hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    padding-top: 64px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
        to bottom,
        rgba(6, 11, 16, 0.6) 0%,
        rgba(6, 11, 16, 0.8) 50%,
        rgba(6, 11, 16, 1) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 50px 0 60px;
    max-width: 720px;
}

.hero-title {
    font-size: 2.6rem;
    font-weight: 900;
    margin-bottom: 4px;
    letter-spacing: 2px;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--secondary2);
    font-weight: 300;
    margin-bottom: 16px;
    letter-spacing: 3px;
}

.hero-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(92, 120, 144, 0.15);
    border: 1px solid var(--border);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--secondary1);
}

.meta-tag i {
    color: var(--secondary2);
    font-size: 0.75rem;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.feature-badge {
    background: linear-gradient(135deg, rgba(92, 154, 191, 0.2), rgba(92, 120, 144, 0.1));
    border: 1px solid rgba(92, 154, 191, 0.25);
    padding: 4px 12px;
    border-radius: 14px;
    font-size: 0.78rem;
    color: var(--accent);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--secondary3), var(--secondary2));
    color: #fff;
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(92, 120, 144, 0.3);
}

.btn-download:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(92, 120, 144, 0.45);
}

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

/* ========== Sections ========== */
.section {
    padding: 70px 0;
}

.section-alt {
    background: var(--bg-section);
}

.section-title {
    text-align: center;
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.section-title i {
    margin-right: 8px;
    color: var(--secondary2);
}

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

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

.news-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.news-date {
    font-size: 0.8rem;
    color: var(--secondary2);
    margin-bottom: 8px;
}

.news-date i {
    margin-right: 4px;
}

.news-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.news-excerpt {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
    line-height: 1.7;
}

.news-link {
    font-size: 0.85rem;
    font-weight: 500;
}

.news-link i {
    margin-left: 4px;
    transition: transform var(--transition);
}

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

/* ========== Gallery ========== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition);
    aspect-ratio: 16 / 10;
}

.gallery-item:hover {
    border-color: var(--secondary2);
    transform: scale(1.03);
    box-shadow: var(--shadow);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

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

/* ========== Lightbox ========== */
.lightbox {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.92);
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 85vh;
}

.lightbox-content img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 6px;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    font-size: 1.4rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.25);
}

.lightbox-close {
    top: 20px;
    right: 20px;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* ========== Reviews ========== */
.reviews-summary {
    text-align: center;
    margin-bottom: 36px;
}

.rating-big {
    margin-bottom: 18px;
}

.rating-score {
    font-size: 3.2rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1;
}

.rating-stars {
    color: #f5a623;
    font-size: 1.2rem;
    margin: 8px 0;
    letter-spacing: 2px;
}

.rating-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.review-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.review-tag {
    background: rgba(92, 154, 191, 0.12);
    border: 1px solid rgba(92, 154, 191, 0.2);
    padding: 5px 16px;
    border-radius: 20px;
    font-size: 0.82rem;
    color: var(--accent);
}

.reviews-carousel {
    position: relative;
    max-width: 680px;
    margin: 0 auto;
    min-height: 180px;
}

.review-card {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: opacity 0.5s ease;
}

.review-card.active {
    display: block;
}

.review-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.review-avatar {
    font-size: 2.2rem;
    color: var(--secondary2);
}

.review-name {
    font-weight: 700;
    font-size: 0.95rem;
    display: block;
    margin-bottom: 2px;
}

.review-stars {
    color: #f5a623;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.review-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.carousel-dot.active {
    background: var(--accent);
    transform: scale(1.2);
}

/* ========== Version Timeline ========== */
.version-timeline {
    max-width: 760px;
    margin: 0 auto;
    position: relative;
    padding-left: 32px;
}

.version-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--secondary2), var(--border));
}

.version-item {
    position: relative;
    margin-bottom: 28px;
}

.version-marker {
    position: absolute;
    left: -32px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 3px solid var(--secondary2);
    z-index: 1;
}

.version-item:first-child .version-marker {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(92, 154, 191, 0.4);
}

.version-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: all var(--transition);
}

.version-content:hover {
    background: var(--bg-card-hover);
}

.version-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.version-tag {
    background: linear-gradient(135deg, var(--secondary3), var(--secondary2));
    color: #fff;
    padding: 3px 12px;
    border-radius: 14px;
    font-size: 0.8rem;
    font-weight: 700;
}

.version-date {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.version-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.version-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: var(--secondary2);
}

.version-meta i {
    margin-right: 4px;
}

.btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(92, 120, 144, 0.15);
    border: 1px solid var(--border);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 500;
    transition: all var(--transition);
}

.btn-sm:hover {
    background: rgba(92, 120, 144, 0.25);
    color: var(--accent-hover);
}

/* ========== Guides ========== */
.guide-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 30px;
}

.filter-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
    background: rgba(92, 154, 191, 0.15);
    border-color: var(--accent);
    color: var(--accent);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.guide-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

.guide-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.guide-card.hidden {
    display: none;
}

.guide-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(92, 154, 191, 0.12);
    border-radius: 10px;
    margin-bottom: 14px;
    font-size: 1.2rem;
    color: var(--accent);
}

.guide-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.guide-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.guide-footer {
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

.guide-difficulty {
    font-size: 0.8rem;
    color: var(--secondary2);
}

.guide-difficulty i {
    margin-right: 4px;
}

/* ========== Chapters ========== */
.chapters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.chapter-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    position: relative;
    transition: all var(--transition);
}

.chapter-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.chapter-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary3), var(--secondary2));
    color: #fff;
    padding: 3px 12px;
    border-radius: 14px;
    font-size: 0.72rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.badge-new {
    background: linear-gradient(135deg, #d4a843, #c7922e);
}

.badge-side {
    background: linear-gradient(135deg, #7b68a5, #9b86c2);
}

.chapter-number {
    font-size: 0.78rem;
    color: var(--secondary2);
    margin-bottom: 4px;
    font-weight: 500;
}

.chapter-card h3 {
    font-size: 1.08rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.chapter-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.chapter-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.chapter-meta span {
    font-size: 0.78rem;
    color: var(--secondary2);
}

.chapter-meta i {
    margin-right: 4px;
    width: 14px;
    text-align: center;
}

.chapter-mood i {
    color: #d4a843;
}

.chapter-choices i {
    color: var(--accent);
}

.chapter-routes i {
    color: #7b9e6a;
}

.chapter-characters {
    border-top: 1px solid var(--border);
    padding-top: 10px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.chapter-characters i {
    margin-right: 4px;
    color: var(--secondary2);
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 760px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    overflow: hidden;
    background: var(--bg-card);
    transition: all var(--transition);
}

.faq-item:hover {
    border-color: rgba(92, 154, 191, 0.25);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: all var(--transition);
}

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

.faq-icon {
    font-size: 0.75rem;
    color: var(--secondary2);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 12px;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

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

.faq-item.active .faq-answer {
    max-height: 400px;
}

.faq-answer p {
    padding: 0 22px 18px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== Footer ========== */
.site-footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border);
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding-bottom: 40px;
}

.footer-col h4 {
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

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

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--secondary3);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    z-index: 999;
}

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

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

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

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

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

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

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

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(6, 11, 16, 0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border);
        gap: 2px;
    }

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

    .main-nav a {
        padding: 12px 16px;
        font-size: 0.92rem;
        border-radius: 8px;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        min-height: 420px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-content {
        padding: 36px 0 48px;
    }

    .hero-meta {
        gap: 8px;
    }

    .meta-tag {
        padding: 4px 10px;
        font-size: 0.76rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.4rem;
        margin-bottom: 28px;
    }

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

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

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

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

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

    .version-timeline {
        padding-left: 28px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .btn-download {
        padding: 12px 28px;
        font-size: 0.9rem;
        width: 100%;
        justify-content: center;
    }

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

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

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