/* ============================================
   DevilTower Docs — 魔塔攻略 主樣式表
   風格：奢華遊戲幻想風（金色 + 深藍）
   ============================================ */

/* --- 1. CSS Variables --- */
:root {
    --dt-bg: #101626;
    --dt-card-bg: #232947;
    --dt-gold: #ffd046;
    --dt-gold-light: #ffe082;
    --dt-gold-dark: #bb9420;
    --dt-cream: #fffbe6;
    --dt-text: #f4f8ff;
    --dt-text-muted: #a0aab8;
    --dt-border: #2e3654;
    --dt-sidebar-bg: #181e32;
    --dt-sidebar-w: 260px;
    --dt-danger: #e74c3c;
    --dt-success: #2ecc71;
    --dt-purple: #a855f7;
    --dt-orange: #f59e0b;
}

/* --- 2. Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', sans-serif;
    background: var(--dt-bg);
    color: var(--dt-text);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}
a { color: var(--dt-gold); text-decoration: none; transition: color .2s; }
a:hover { color: var(--dt-gold-light); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dt-bg); }
::-webkit-scrollbar-thumb { background: var(--dt-gold-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--dt-gold); }

/* --- 3. Layout System --- */
.dt-layout { display: flex; min-height: 100vh; }

.dt-main {
    margin-left: var(--dt-sidebar-w);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.dt-content {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 32px 5vw 60px;
}

/* --- 4. Sidebar Navigation --- */
.dt-sidebar {
    position: fixed;
    left: 0; top: 0;
    width: var(--dt-sidebar-w);
    height: 100vh;
    background: var(--dt-sidebar-bg);
    border-right: 1px solid var(--dt-border);
    overflow-y: auto;
    z-index: 100;
    display: flex;
    flex-direction: column;
    padding: 28px 0 20px;
}

.dt-sidebar-logo {
    width: 120px;
    margin: 0 auto 8px;
    filter: drop-shadow(0 0 12px #ffd04644);
}

.dt-sidebar-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 11px;
    color: var(--dt-gold);
    text-align: center;
    letter-spacing: 2px;
    margin-bottom: 24px;
    text-shadow: 0 0 8px #ffd04666;
}

.dt-sidebar-nav {
    flex: 1;
    padding: 0 12px;
}

.dt-nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px 30px 10px 4px;
    color: var(--dt-text-muted);
    border-left: 3px solid transparent;
    border-radius: 0 6px 6px 0;
    font-size: 14px;
    transition: all .2s;
    margin-bottom: 2px;
}
.dt-nav-item:hover {
    color: var(--dt-gold-light);
    background: #ffd04610;
    border-left-color: var(--dt-gold-dark);
}
.dt-nav-item--active {
    color: var(--dt-gold);
    background: #ffd04618;
    border-left-color: var(--dt-gold);
    font-weight: 600;
}

.dt-nav-icon {
    width: 18px; height: 18px;
    flex-shrink: 0;
    fill: currentColor;
    opacity: .7;
}
.dt-nav-item:hover .dt-nav-icon,
.dt-nav-item--active .dt-nav-icon { opacity: 1; }

/* ── 遊戲下載 CTA 按鈕 ── */
.dt-nav-item--download {
    margin: 10px 12px 4px;
    padding: 10px 16px;
    border-left: none;
    border-radius: 8px;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: .04em;
    color: #1a1200;
    background: linear-gradient(135deg, #ffd046 0%, #ffb700 60%, #e8960a 100%);
    box-shadow: 0 2px 12px rgba(255,183,0,.35), 0 0 0 1px rgba(255,208,70,.25);
    transition: filter .2s, box-shadow .2s, transform .15s;
}
.dt-nav-item--download:hover {
    color: #1a1200;
    background: linear-gradient(135deg, #ffe066 0%, #ffc800 60%, #f0a500 100%);
    border-left-color: transparent;
    box-shadow: 0 4px 20px rgba(255,183,0,.55), 0 0 0 1px rgba(255,220,80,.5);
    transform: translateY(-1px);
}
.dt-nav-item--download .dt-nav-icon {
    opacity: 1;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,.25));
}

.dt-sidebar-ext {
    padding: 16px 20px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.dt-sidebar-ext a {
    display: block;
    text-align: center;
    padding: 8px;
    font-size: 12px;
    color: var(--dt-text-muted);
    border: 1px solid var(--dt-border);
    border-radius: 4px;
    transition: all .2s;
}
.dt-sidebar-ext a:hover {
    border-color: var(--dt-gold-dark);
    color: var(--dt-gold);
}

/* Sidebar close button (mobile only) */
.dt-sidebar-close {
    display: none;
    position: absolute;
    top: 12px; right: 12px;
}
.dt-sidebar-close button {
    background: none; border: none;
    color: var(--dt-text-muted);
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
    padding: 4px 8px;
}
.dt-sidebar-close button:hover { color: var(--dt-gold); }

/* --- 5. Mobile Bar & Overlay --- */
.dt-mobile-bar {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 52px;
    background: var(--dt-sidebar-bg);
    border-bottom: 1px solid var(--dt-border);
    z-index: 90;
    align-items: center;
    padding: 0 16px;
}

.dt-hamburger {
    background: none; border: none;
    color: var(--dt-gold);
    font-size: 24px;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}

.dt-mobile-bar-title {
    font-family: 'Press Start 2P', monospace;
    font-size: 9px;
    color: var(--dt-gold);
    margin-left: 12px;
    letter-spacing: 1px;
}

.dt-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    z-index: 99;
}
.dt-sidebar-overlay.open { display: block; }

body.dt-no-scroll { overflow: hidden; }

/* --- 6. Hero Banner --- */
.dt-hero {
    background: linear-gradient(135deg, #181e32 0%, #232947 40%, #1a2035 100%);
    border-bottom: 1px solid var(--dt-border);
    padding: 60px 5vw 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.dt-hero::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 50%, #ffd04612 0%, transparent 50%);
    pointer-events: none;
}
.dt-hero-title {
    font-family: 'ZaoZiGongFangLiHeiTi', 'Microsoft JhengHei', serif;
    font-size: clamp(28px, 5vw, 48px);
    color: var(--dt-gold);
    text-shadow: 0 0 24px #ffd04644, 0 2px 4px rgba(0,0,0,.5);
    margin-bottom: 12px;
    position: relative;
}
.dt-hero-sub {
    color: var(--dt-text-muted);
    font-size: clamp(14px, 2vw, 16px);
    position: relative;
}

/* --- 7. Breadcrumb --- */
.dt-breadcrumb {
    display: none;
}
.dt-breadcrumb a { color: var(--dt-text-muted); }
.dt-breadcrumb a:hover { color: var(--dt-gold); }
.dt-breadcrumb__sep {
    margin: 0 8px;
    color: var(--dt-border);
}

/* --- 8. Card Grid --- */
.dt-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 28px;
}

.dt-card {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    padding: 28px 20px 24px;
    position: relative;
    transition: box-shadow .35s, border-color .35s;
    text-align: center;
    cursor: pointer;
    text-decoration: none;
    color: var(--dt-text);
    display: block;
}
/* Corner ornaments */
.dt-card::before, .dt-card::after {
    content: '';
    position: absolute;
    width: 14px; height: 14px;
    border-color: var(--dt-gold-dark);
    border-style: solid;
    transition: border-color .35s;
}
.dt-card::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.dt-card::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }

.dt-card:hover {
    border-color: var(--dt-gold-dark);
    box-shadow: 0 0 24px #ffd04622, 0 0 48px #ffd04611;
}
.dt-card:hover::before,
.dt-card:hover::after { border-color: var(--dt-gold); }

.dt-card__icon {
    width: 40px; height: 40px;
    margin: 0 auto 14px;
    color: var(--dt-gold);
}
.dt-card__icon svg { width: 100%; height: 100%; fill: currentColor; }

.dt-card__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--dt-cream);
    margin-bottom: 8px;
}
.dt-card__desc {
    font-size: 13px;
    color: var(--dt-text-muted);
    line-height: 1.5;
}

/* --- 9. Announcement List --- */
.dt-section-title {
    font-family: 'ZaoZiGongFangLiHeiTi', 'Microsoft JhengHei', serif;
    font-size: 22px;
    color: var(--dt-gold);
    text-align: center;
    position: relative;
    padding-bottom: 14px;
    margin-bottom: 24px;
}
.dt-section-title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 80px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--dt-gold), transparent);
}

.dt-ann-list { margin-top: 8px; }

.dt-ann-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--dt-border);
    transition: background .2s;
}
.dt-ann-row:hover { background: #ffd04608; }
.dt-ann-row:last-child { border-bottom: none; }

.dt-ann-badge {
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 3px;
    font-weight: 600;
    flex-shrink: 0;
    min-width: 48px;
    text-align: center;
}
.dt-ann-badge--system { background: #e74c3c22; color: #e74c3c; border: 1px solid #e74c3c44; }
.dt-ann-badge--event  { background: #ffd04622; color: var(--dt-gold); border: 1px solid #ffd04644; }
.dt-ann-badge--update { background: #2ecc7122; color: #2ecc71; border: 1px solid #2ecc7144; }
.dt-ann-badge--guide  { background: #a855f722; color: #a855f7; border: 1px solid #a855f744; }
.dt-ann-badge--intro  { background: #3b82f622; color: #3b82f6; border: 1px solid #3b82f644; }

.dt-ann-title {
    flex: 1;
    color: var(--dt-text);
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.dt-ann-row:hover .dt-ann-title { color: var(--dt-gold-light); }

.dt-ann-date {
    font-size: 12px;
    color: var(--dt-text-muted);
    flex-shrink: 0;
}

.dt-more-link {
    display: block;
    text-align: center;
    padding: 12px;
    font-size: 13px;
    color: var(--dt-text-muted);
    border: 1px solid var(--dt-border);
    margin-top: 16px;
    transition: all .2s;
}
.dt-more-link:hover {
    border-color: var(--dt-gold-dark);
    color: var(--dt-gold);
}

/* --- 10. Pagination --- */
.dt-paginate {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 32px;
}
.dt-paginate__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px; height: 36px;
    padding: 0 10px;
    font-size: 13px;
    color: var(--dt-text-muted);
    border: 1px solid var(--dt-border);
    background: transparent;
    cursor: pointer;
    transition: all .2s;
    text-decoration: none;
}
.dt-paginate__item:hover {
    border-color: var(--dt-gold-dark);
    color: var(--dt-gold);
}
.dt-paginate__item--active {
    background: var(--dt-gold);
    color: var(--dt-bg);
    border-color: var(--dt-gold);
    font-weight: 700;
}
.dt-paginate__item--disabled {
    opacity: .3;
    pointer-events: none;
}

/* --- 11. Article Content Styling --- */
.dt-article {
    position: relative;
}

.dt-article h1 {
    font-family: 'ZaoZiGongFangLiHeiTi', 'Microsoft JhengHei', serif;
    font-size: clamp(24px, 4vw, 32px);
    color: var(--dt-gold);
    text-align: center;
    padding-bottom: 16px;
    margin-bottom: 32px;
    position: relative;
}
.dt-article h1::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 100px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--dt-gold), transparent);
}

.dt-article h2 {
    font-size: 20px;
    color: var(--dt-cream);
    margin: 40px 0 16px;
    font-weight: 600;
    text-align: center;
    position: relative;
    padding-bottom: 10px;
}
.dt-article h2::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 60px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--dt-gold), transparent);
}
.dt-article h2:first-of-type { margin-top: 0; }

.dt-article h3 {
    font-size: 16px;
    color: var(--dt-gold-light);
    margin: 24px 0 12px;
}

/* ── 可點擊文字連結：尾端放大鏡圖示 ── */
/* 排除：卡片連結(doll-icard)、帶徽章的搜尋列(sc-lnk)、純圖示連結 */
.dt-article a[target="_blank"]:not(.doll-icard):not(.sc-lnk)::after {
    content: '\00a0🔍';
    font-size: .68em;
    opacity: .55;
    vertical-align: middle;
    pointer-events: none;
}

.dt-article p {
    margin-bottom: 16px;
    color: var(--dt-text);
    font-size: 15px;
}

.dt-article ul, .dt-article ol {
    margin: 0 0 16px 20px;
    color: var(--dt-text);
}
.dt-article ul { list-style: disc; }
.dt-article ol { list-style: decimal; }
.dt-article li { margin-bottom: 6px; font-size: 15px; }

/* Tip box */
.dt-tip {
    background: linear-gradient(135deg, #ffd04608, #ffd04612);
    border-left: 3px solid var(--dt-gold);
    border-radius: 0 6px 6px 0;
    padding: 14px 20px;
    margin: 20px 0;
    font-size: 14px;
    color: var(--dt-gold-light);
    line-height: 1.6;
}
.dt-tip strong {
    color: var(--dt-gold);
}

/* Warning box */
.dt-warn {
    background: linear-gradient(135deg, #e74c3c08, #e74c3c12);
    border-left: 3px solid var(--dt-danger);
    border-radius: 0 6px 6px 0;
    padding: 14px 20px;
    margin: 20px 0;
    font-size: 14px;
    color: #f5a5a5;
}

/* Table */
.dt-table-wrap { overflow-x: auto; margin: 20px 0; }
.dt-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.dt-table th {
    background: var(--dt-card-bg);
    color: var(--dt-gold);
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 2px solid var(--dt-gold-dark);
}
.dt-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--dt-border);
    color: var(--dt-text);
}
.dt-table tbody tr:nth-child(even) td { background: rgba(35,41,71,0.28); }
.dt-table tr:hover td { background: rgba(255,208,70,0.05) !important; }

/* Material note */
.dt-mat-note {
    font-size: 13px;
    color: var(--dt-text-muted);
    margin: -4px 0 16px !important;
    padding: 10px 16px;
    background: rgba(35,41,71,0.4);
    border-left: 2px solid rgba(255,208,70,0.2);
    border-radius: 0 5px 5px 0;
    line-height: 1.65;
}

/* --- 12. Table of Contents — 快速索引浮動按鈕 --- */
.dt-toc {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 200;
    background: rgba(12, 17, 34, 0.88);
    border: 1px solid rgba(255, 208, 70, 0.3);
    border-radius: 20px;
    padding: 8px 16px;
    min-width: 108px;
    text-align: center;
    cursor: default;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.35);
    transition: border-radius .3s, border-color .3s, box-shadow .3s, padding .3s, background .3s;
}
.dt-toc:hover {
    border-radius: 10px;
    border-color: rgba(255, 208, 70, 0.65);
    box-shadow: 0 8px 32px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,208,70,0.08);
    padding: 12px 18px;
    background: rgba(12, 17, 34, 0.97);
}

.dt-toc-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--dt-gold);
    letter-spacing: 1.5px;
    white-space: nowrap;
    margin-bottom: 0;
    cursor: default;
    transition: margin-bottom .3s;
}
.dt-toc-title::before { content: '≡  '; opacity: 0.8; }
.dt-toc:hover .dt-toc-title { margin-bottom: 10px; }

.dt-toc-links {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: max-height .4s ease, opacity .25s;
}
.dt-toc:hover .dt-toc-links {
    max-height: 600px;
    opacity: 1;
}

/* --- 13. Collapsible weapon sections --- */
.dt-section {
    --tc: rgba(255,208,70,0.6);
    --tc-bg: rgba(255,208,70,0.05);
    --tc-border: rgba(255,208,70,0.26);
    margin-bottom: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    overflow: hidden;
    /* brushed metal: fine horizontal grain over a deep blue gradient */
    background:
        repeating-linear-gradient(
            0deg,
            rgba(255,255,255,0.028) 0px,
            rgba(255,255,255,0.028) 1px,
            rgba(0,0,0,0.04) 1px,
            rgba(0,0,0,0.04) 2px
        ),
        linear-gradient(150deg, #242d50 0%, #1b2340 55%, #232b4e 100%);
    transition: border-color .35s, box-shadow .35s;
}
.dt-section.open {
    border-color: var(--tc-border);
    box-shadow: 0 6px 28px rgba(0,0,0,0.35), 0 0 0 1px rgba(255,255,255,0.04) inset;
}
.dt-article h2.dt-section-hd {
    display: flex !important;
    align-items: center;
    justify-content: flex-start;
    position: relative;
    overflow: hidden;
    gap: 0;
    margin: 0 !important;
    padding: 15px 44px 15px 18px !important;
    border-left: 3px solid var(--tc) !important;
    /* brushed metal header: slightly lighter grain */
    background:
        repeating-linear-gradient(
            0deg,
            rgba(255,255,255,0.035) 0px,
            rgba(255,255,255,0.035) 1px,
            rgba(0,0,0,0.03) 1px,
            rgba(0,0,0,0.03) 2px
        ),
        linear-gradient(150deg, #2c3660 0%, #222c54 55%, #2a3560 100%);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    cursor: pointer;
    user-select: none;
    transition: filter .15s;
}
/* wide glow field from left edge, tier-color matched */
.dt-article h2.dt-section-hd::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 90px;
    background: linear-gradient(to right, var(--tc), transparent);
    opacity: 0.2;
    pointer-events: none;
}
.dt-article h2.dt-section-hd:hover { filter: brightness(1.1); }
.dt-article h2.dt-section-hd:hover::before { opacity: 0.32; }

.dt-section.open > h2.dt-section-hd::before { opacity: 0.28; }
.dt-section.open > h2.dt-section-hd {
    border-bottom-color: var(--tc-border);
}

/* ivory-white elegant text */
.dt-section-label {
    flex: 1;
    text-align: center;
    color: #f5efe0;
    font-weight: 500;
    letter-spacing: 0.4px;
}
/* overview has no badge — offset to align with tier rows */
.dt-section-label:first-child {
    padding-left: 52px;
}

.dt-section-chevron {
    position: absolute;
    right: 18px;
    font-size: 11px;
    color: var(--dt-gold);
    opacity: 0.45;
    transition: transform .18s cubic-bezier(0.4,0,0.2,1), opacity .15s;
    transform: rotate(-90deg);
    font-style: normal;
}
.dt-section.open > h2.dt-section-hd .dt-section-chevron {
    transform: rotate(0deg);
    opacity: 0.9;
}
.dt-section-body {
    overflow: hidden;
    max-height: 0;
    transition: max-height .18s cubic-bezier(0.4,0,0.2,1);
}
.dt-section.open > .dt-section-body {
    max-height: 9999px;
    padding: 6px 20px 22px;
}

.dt-toc a {
    display: block;
    font-size: 12px;
    color: var(--dt-text-muted);
    text-align: left;
    padding: 4px 0 4px 10px;
    border-left: 2px solid transparent;
    white-space: nowrap;
    text-decoration: none;
    transition: color .15s, border-left-color .15s;
}
.dt-toc a:hover {
    color: var(--dt-gold);
    border-left-color: var(--dt-gold);
}

/* Mobile TOC */
.dt-toc-mobile {
    display: none;
    margin-bottom: 24px;
}
.dt-toc-toggle {
    width: 100%;
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    color: var(--dt-gold);
    padding: 10px 16px;
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}
.dt-toc-toggle::after {
    content: ' ▼';
    font-size: 10px;
}
.dt-toc-mobile-list {
    background: var(--dt-card-bg);
    border: 1px solid var(--dt-border);
    border-top: none;
    padding: 12px 16px;
    display: none;
}
.dt-toc-mobile-list.open { display: block; }
.dt-toc-mobile-list a {
    display: block;
    font-size: 13px;
    color: var(--dt-text-muted);
    padding: 6px 0;
}
.dt-toc-mobile-list a:hover { color: var(--dt-gold); }

/* --- 12b. Prominent External Link Button --- */
.dt-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px 3px 8px;
    background: rgba(255, 208, 70, 0.12);
    border: 1px solid rgba(255, 208, 70, 0.5);
    border-radius: 4px;
    color: var(--dt-gold) !important;
    font-size: 0.9em;
    font-weight: 600;
    text-decoration: none !important;
    transition: background .2s, border-color .2s, color .2s, box-shadow .2s;
    vertical-align: middle;
    white-space: nowrap;
    cursor: pointer;
}
.dt-link-btn::after {
    content: '↗';
    font-size: 0.8em;
    opacity: 0.7;
}
.dt-link-btn:hover {
    background: rgba(255, 208, 70, 0.28);
    border-color: var(--dt-gold);
    color: var(--dt-gold-light) !important;
    box-shadow: 0 0 8px rgba(255, 208, 70, 0.25);
}

/* --- 13. Ornamental Elements --- */
.dt-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--dt-gold) 50%, transparent 100%);
    margin: 32px 0;
    opacity: .3;
}
.dt-divider--light { opacity: .15; margin: 20px 0; }

/* --- 14. Footer --- */
.dt-footer {
    border-top: 1px solid var(--dt-border);
    padding: 28px 5vw;
    text-align: center;
    color: var(--dt-text-muted);
    font-size: 13px;
    position: relative;
}
.dt-footer::before {
    content: '';
    position: absolute;
    top: -1px; left: 20%; right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--dt-gold-dark), transparent);
}
.dt-footer-links {
    margin-bottom: 12px;
}
.dt-footer-links a {
    color: var(--dt-text-muted);
    margin: 0 12px;
    font-size: 13px;
}
.dt-footer-links a:hover { color: var(--dt-gold); }

/* --- 15. News Detail Page --- */
.dt-news-header {
    text-align: center;
    margin-bottom: 32px;
}
.dt-news-header h1 {
    font-size: clamp(20px, 4vw, 28px);
    color: var(--dt-cream);
    margin: 12px 0 8px;
    font-weight: 600;
}
.dt-news-date {
    font-size: 13px;
    color: var(--dt-text-muted);
}
.dt-news-body {
    font-size: 15px;
    line-height: 1.8;
}
.dt-news-body p { margin-bottom: 16px; }
.dt-news-back {
    display: inline-block;
    margin-top: 32px;
    padding: 8px 20px;
    border: 1px solid var(--dt-border);
    color: var(--dt-text-muted);
    font-size: 13px;
    transition: all .2s;
}
.dt-news-back:hover {
    border-color: var(--dt-gold-dark);
    color: var(--dt-gold);
}

/* --- 16. Animations --- */
@keyframes dt-glow-pulse {
    0%, 100% { box-shadow: 0 0 12px #ffd04633; }
    50% { box-shadow: 0 0 24px #ffd04655, 0 0 48px #ffd04622; }
}

@keyframes dt-fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.dt-animate {
    animation: dt-fadeIn .5s cubic-bezier(.4, 0, .2, 1) both;
}

/* --- 17. Responsive --- */
@media (max-width: 1100px) {
    .dt-cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --dt-sidebar-w: 0px; }

    .dt-sidebar {
        left: -75vw;
        width: 70vw;
        max-width: 300px;
        transition: left .3s cubic-bezier(.4, 0, .2, 1);
        padding-top: 56px;
    }
    .dt-sidebar.open { left: 0; }
    .dt-sidebar-close { display: block; }

    .dt-mobile-bar { display: flex; }

    .dt-main { margin-left: 0; padding-top: 52px; }

    .dt-hero { padding: 40px 5vw 36px; }

    .dt-content { padding: 24px 4vw 40px; }

    .dt-breadcrumb { padding: 16px 4vw 0; }

    /* TOC: switch to mobile mode */
    .dt-toc { display: none; }
    .dt-toc-mobile { display: block; }

    .dt-ann-date { display: none; }
}

@media (max-width: 480px) {
    .dt-cards-grid { grid-template-columns: 1fr; }
    .dt-ann-badge { min-width: 40px; font-size: 10px; padding: 2px 6px; }
}