/* ============================================
   outpost daily - Stylesheet
   ============================================ */

:root {
    --color-primary: #1b4332;
    --color-primary-light: #2d6a4f;
    --color-bg: #f5f1eb;
    --color-card: #ffffff;
    --color-text: #1a1a1a;
    --color-text-muted: #6b7280;
    --color-border: #e5e0d8;
    --color-badge-survival: #dc2626;
    --color-badge-bushcraft: #65a30d;
    --color-badge-camp: #b45309;
    --color-badge-overland: #2563eb;
    --color-badge-offgrid: #0d9488;
    --color-badge-selfbuild: #059669;
    --color-badge-cooking: #ea580c;
    --color-badge-fishing: #0369a1;
    --color-badge-cycling: #d946ef;
    --color-badge-hiking:  #7c3aed;
    --color-badge-climbing: #e11d48;
    --color-badge-winter:  #0ea5e9;
    --color-badge-paddle:  #06b6d4;
    --font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Segoe UI", sans-serif;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-hover: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.06);
}

html.dark {
    --color-bg: #1a1a2e;
    --color-card: #22223b;
    --color-text: #e0e0e0;
    --color-text-muted: #9ca3af;
    --color-border: #3a3a5c;
    --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow-hover: 0 10px 25px rgba(0,0,0,0.4), 0 4px 10px rgba(0,0,0,0.3);
}

html.dark .site-header {
    background: linear-gradient(135deg, #060e1a 0%, #0c1f15 40%, #122a1a 100%);
}

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

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    min-height: 100vh;
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ---- Header ---- */
.sticky-top { position: sticky; top: 0; z-index: 100; }
.site-header {
    position: relative;
    color: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, #0a1628 0%, #122a1a 40%, #1b4332 100%);
    overflow: hidden;
}

.site-header::before,
.site-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    pointer-events: none;
}

.site-header::before {
    background-image:
        radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.7) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 25% 60%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 40% 15%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1.2px 1.2px at 55% 75%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 35%, rgba(255,255,255,0.65) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 85% 55%, rgba(255,255,255,0.45) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 80%, rgba(255,255,255,0.55) 0%, transparent 100%),
        radial-gradient(1.3px 1.3px at 35% 45%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 60% 90%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 80% 10%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 5% 50%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1.2px 1.2px at 48% 30%, rgba(255,255,255,0.55) 0%, transparent 100%),
        radial-gradient(1px 1px at 92% 70%, rgba(255,255,255,0.45) 0%, transparent 100%),
        radial-gradient(1.4px 1.4px at 20% 5%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 75% 85%, rgba(255,255,255,0.5) 0%, transparent 100%);
    animation: particleDrift1 60s linear infinite;
}

.site-header::after {
    background-image:
        radial-gradient(1px 1px at 8% 40%, rgba(200,230,255,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 22% 10%, rgba(200,230,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 38% 70%, rgba(200,230,255,0.55) 0%, transparent 100%),
        radial-gradient(1.2px 1.2px at 52% 25%, rgba(200,230,255,0.45) 0%, transparent 100%),
        radial-gradient(1px 1px at 68% 55%, rgba(200,230,255,0.5) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 82% 85%, rgba(200,230,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 95% 30%, rgba(200,230,255,0.6) 0%, transparent 100%),
        radial-gradient(1.3px 1.3px at 12% 65%, rgba(200,230,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 50%, rgba(200,230,255,0.4) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 65% 8%, rgba(200,230,255,0.55) 0%, transparent 100%);
    animation: particleDrift2 45s linear infinite;
}

@keyframes particleDrift1 { from { transform: translate(0, 0); } to { transform: translate(-50%, -50%); } }
@keyframes particleDrift2 { from { transform: translate(0, 0); } to { transform: translate(-30%, -50%); } }

@media (prefers-reduced-motion: reduce) {
    .site-header::before, .site-header::after { animation: none; }
}

.header-inner { display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 1; }
.site-title { font-size: 1.5rem; font-weight: 700; display: flex; align-items: center; gap: 8px; letter-spacing: 0.02em; }
.site-logo { height: 54px; width: auto; display: block; filter: brightness(0) invert(1); }
.site-tagline { font-size: 0.8rem; opacity: 0.8; margin-top: 2px; }
.last-updated { font-size: 0.8rem; color: rgba(255,255,255,0.7); white-space: nowrap; }

/* ---- Filters ---- */
.filters-bar { background: var(--color-card); border-bottom: 1px solid var(--color-border); padding: 12px 0; box-shadow: 0 1px 4px rgba(0,0,0,0.05); }
.filters-inner { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.filter-select, .filter-input { font-family: var(--font-family); font-size: 0.85rem; padding: 8px 12px; border: 1px solid var(--color-border); border-radius: 6px; background: var(--color-bg); color: var(--color-text); outline: none; transition: border-color 0.2s; }
.filter-select:focus, .filter-input:focus { border-color: var(--color-primary-light); }
.filter-search-group { flex: 1; min-width: 180px; }
.filter-input { width: 100%; }
.filter-actions { display: flex; gap: 8px; }

/* ---- Article Count ---- */
.article-count { padding: 16px 0 8px; font-size: 0.85rem; color: var(--color-text-muted); }

/* ---- Article Grid ---- */
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; padding: 12px 0 40px; }

/* ---- Card ---- */
.card { background: var(--color-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.2s ease, box-shadow 0.2s ease; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.card-link { display: flex; flex-direction: column; height: 100%; text-decoration: none; color: inherit; }

.card-image { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: url('../img/noimage.svg') center / cover no-repeat; }
.card-image img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.3s ease; }
.card:hover .card-image img { transform: scale(1.03); }

.card-play-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 48px; height: 48px; background: rgba(0,0,0,0.6); border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0.9; transition: opacity 0.2s, transform 0.2s; }
.card:hover .card-play-icon { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
.card-yt-badge { position: absolute; bottom: 8px; right: 8px; z-index: 1; line-height: 0; opacity: 0.9; }

.card-category-badge { position: absolute; z-index: 1; top: 10px; left: 10px; padding: 3px 10px; border-radius: 20px; font-size: 0.7rem; font-weight: 600; color: #fff; background: var(--color-badge-camp); backdrop-filter: blur(4px); }

.card[data-category="survival"] .card-category-badge { background: var(--color-badge-survival); }
.card[data-category="bushcraft"] .card-category-badge { background: var(--color-badge-bushcraft); }
.card[data-category="camp"] .card-category-badge { background: var(--color-badge-camp); }
.card[data-category="overland"] .card-category-badge { background: var(--color-badge-overland); }
.card[data-category="offgrid"] .card-category-badge { background: var(--color-badge-offgrid); }
.card[data-category="selfbuild"] .card-category-badge { background: var(--color-badge-selfbuild); }
.card[data-category="cooking"] .card-category-badge { background: var(--color-badge-cooking); }
.card[data-category="fishing"] .card-category-badge { background: var(--color-badge-fishing); }
.card[data-category="cycling"] .card-category-badge { background: var(--color-badge-cycling); }
.card[data-category="climbing"] .card-category-badge { background: var(--color-badge-climbing); }
.card[data-category="winter"] .card-category-badge { background: var(--color-badge-winter); }
.card[data-category="paddle"] .card-category-badge { background: var(--color-badge-paddle); }
.card[data-category="hiking"]  .card-category-badge { background: var(--color-badge-hiking); }

.card-body { padding: 16px; flex: 1; display: flex; flex-direction: column; }
.card-title { font-size: 1rem; font-weight: 700; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; flex: 1 0 auto; }
.card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.75rem; color: var(--color-text-muted); margin-top: auto; }
.card-meta-right { display: flex; align-items: center; gap: 8px; }
.card-source { font-weight: 500; max-width: 55%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-flag { font-size: 1.3em; vertical-align: -2px; }
.card-date { white-space: nowrap; }
.card-duration { background: var(--color-primary); color: #fff; padding: 1px 6px; border-radius: 3px; font-size: 0.7rem; font-weight: 600; }
.card-likes { display: inline-flex; align-items: center; gap: 2px; color: var(--color-text-muted); font-size: 0.7rem; }
.card-likes svg { fill: none; stroke: currentColor; stroke-width: 2; }
.tag-badge { background: var(--color-bg); border: 1px solid var(--color-border); padding: 1px 8px; border-radius: 12px; font-size: 0.65rem; color: var(--color-text-muted); white-space: nowrap; }

/* ---- Load More ---- */
.load-more-wrap { text-align: center; padding: 20px 0 40px; }
.btn-load-more { font-family: var(--font-family); font-size: 0.9rem; font-weight: 600; padding: 12px 40px; background: var(--color-primary); color: #fff; border: none; border-radius: 8px; cursor: pointer; transition: background 0.2s; }
.btn-load-more:hover { background: var(--color-primary-light); }

/* ---- Loading ---- */
.loading { text-align: center; padding: 40px 0; color: var(--color-text-muted); font-size: 0.85rem; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- No Results ---- */
.no-results { text-align: center; padding: 60px 20px; color: var(--color-text-muted); font-size: 0.95rem; }

/* ---- Theme Toggle ---- */
.btn-theme { font-family: var(--font-family); padding: 8px 10px; border: 1px solid var(--color-border); border-radius: 6px; background: var(--color-bg); color: var(--color-text); cursor: pointer; transition: all 0.2s; display: flex; align-items: center; }
.btn-theme:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-lang { font-family: var(--font-family); padding: 6px 12px; border: 1px solid var(--color-border); border-radius: 6px; background: var(--color-bg); color: var(--color-text); cursor: pointer; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; transition: all 0.2s; }
.btn-lang:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.theme-icon-dark { display: none; }
html.dark .theme-icon-light { display: none; }
html.dark .theme-icon-dark { display: block; }

/* ---- Share Modal ---- */
.share-modal { display: none; position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,0.55); align-items: flex-end; justify-content: center; }
@media (min-width: 600px) { .share-modal { align-items: center; } }
.share-modal.open { display: flex; }
.share-modal-inner { background: var(--color-card); border-radius: 14px 14px 0 0; padding: 24px 20px 32px; width: 100%; max-width: 420px; position: relative; }
@media (min-width: 600px) { .share-modal-inner { border-radius: 14px; padding: 24px 20px; } }
.share-modal-title { text-align: center; font-weight: 700; font-size: 0.95rem; margin: 0 0 16px; color: var(--color-text); }
.share-modal-buttons { display: flex; flex-direction: column; gap: 10px; }
.share-btn { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 8px; text-decoration: none; font-size: 0.9rem; font-weight: 600; border: none; cursor: pointer; width: 100%; box-sizing: border-box; }
.share-btn-x    { background: #000; color: #fff; }
.share-btn-fb   { background: #1877f2; color: #fff; }
.share-btn-line { background: #06c755; color: #fff; }
.share-btn-copy { background: var(--color-border); color: var(--color-text); }
.share-btn:hover { opacity: 0.85; }
.share-modal-close { position: absolute; top: 12px; right: 14px; background: none; border: none; font-size: 1.6rem; line-height: 1; cursor: pointer; color: var(--color-text-muted); padding: 0; }
html.dark .share-btn-copy { background: #3a3a4a; color: var(--color-text); }

/* ---- Footer Links ---- */
.footer-powered { margin-top: 8px; font-size: 0.72rem; }
.footer-powered a { color: rgba(255,255,255,0.85); text-decoration: none; }
.footer-powered a:hover { color: rgba(255,255,255,0.9); text-decoration: underline; }
.footer-links { margin-top: 6px; display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.footer-static-link { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 0.72rem; }
.footer-static-link:hover { color: rgba(255,255,255,0.9); text-decoration: underline; }
.rss-link { color: #f26522; text-decoration: none; opacity: 0.85; display: inline-flex; align-items: center; }
.rss-link:hover { opacity: 1; }

/* ---- Dark mode overrides ---- */
html.dark .filters-bar { background: var(--color-card); border-color: var(--color-border); }
html.dark .article-detail-content .article-notice { background: #3a2e1a; color: #fbbf24; }

/* ---- Ad Slots ---- */
.ad-slot { text-align: center; overflow: hidden; }
.ad-slot-infeed { grid-column: 1 / -1; margin: 8px 0; }
.ad-slot-article { margin: 24px 0; }

/* ---- Back to Top ---- */
.btn-top { position: fixed; bottom: 24px; right: 20px; z-index: 900; background: #fff; color: var(--color-primary); border: 2px solid var(--color-primary); border-radius: 50%; width: 44px; height: 44px; font-size: 1.1rem; line-height: 44px; text-align: center; text-decoration: none; cursor: pointer; box-shadow: 0 2px 10px rgba(0,0,0,0.3); opacity: 0; pointer-events: none; transition: opacity 0.2s; display: flex; align-items: center; justify-content: center; }
.btn-top.visible { opacity: 1; pointer-events: auto; }
.btn-top:hover { background: var(--color-primary); color: #fff; }

/* ---- Footer ---- */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.7); text-align: center; padding: 20px 0; font-size: 0.75rem; margin-top: 40px; }

/* ---- Responsive ---- */

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

/* Mobile */
@media (max-width: 768px) {
    .sticky-top { position: static; }
    .site-header { padding: 12px 0; }
    .site-title { font-size: 1.2rem; }
    .site-logo { height: 42px; }
    .site-tagline { font-size: 0.7rem; }
    .last-updated { font-size: 0.7rem; }
    .header-inner { gap: 8px; }

    .filters-bar { padding: 8px 0; }
    .filters-inner { flex-direction: column; align-items: stretch; gap: 8px; }
    .filter-group { width: 100%; }
    .filter-select, .filter-input { width: 100%; font-size: 16px; padding: 10px 12px; min-height: 44px; }
    .filter-actions { justify-content: flex-end; }
    .btn-theme, .btn-lang { min-height: 44px; min-width: 44px; display: flex; align-items: center; justify-content: center; }

    .article-grid { grid-template-columns: 1fr; gap: 16px; }
    .container { padding: 0 16px; }

    .btn-load-more { width: 100%; padding: 14px 20px; min-height: 48px; }

    .site-footer { padding: 16px 0; font-size: 0.7rem; }
}

/* Small phone */
@media (max-width: 480px) {
    .site-tagline { font-size: 0.65rem; }
    .last-updated { font-size: 0.65rem; }
    .container { padding: 0 12px; }
    .card-title { font-size: 0.9rem; }
    .card-body { padding: 12px; }
    .card-meta { font-size: 0.7rem; }
    .card-source { max-width: 50%; }
    .article-count { padding: 12px 0 4px; font-size: 0.8rem; }
}

/* ---- Article Detail ---- */
.header-home-link { color: inherit; text-decoration: none; display: flex; align-items: center; gap: 8px; }
.article-detail { max-width: 800px; margin: 0 auto; padding: 24px 0 60px; }
.back-link { display: inline-block; color: var(--color-primary-light); text-decoration: none; font-size: 0.85rem; font-weight: 500; margin-bottom: 20px; transition: color 0.2s; }
.back-link:hover { color: var(--color-primary); }

.article-detail-header { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.article-detail-category { display: inline-block; padding: 4px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; color: #fff; background: var(--color-badge-camp); }
.article-detail-category[data-category="survival"] { background: var(--color-badge-survival); }
.article-detail-category[data-category="bushcraft"] { background: var(--color-badge-bushcraft); }
.article-detail-category[data-category="camp"] { background: var(--color-badge-camp); }
.article-detail-category[data-category="overland"] { background: var(--color-badge-overland); }
.article-detail-category[data-category="offgrid"] { background: var(--color-badge-offgrid); }
.article-detail-category[data-category="selfbuild"] { background: var(--color-badge-selfbuild); }
.article-detail-category[data-category="cooking"] { background: var(--color-badge-cooking); }
.article-detail-category[data-category="fishing"] { background: var(--color-badge-fishing); }
.article-detail-category[data-category="cycling"] { background: var(--color-badge-cycling); }
.article-detail-category[data-category="climbing"] { background: var(--color-badge-climbing); }
.article-detail-category[data-category="winter"] { background: var(--color-badge-winter); }
.article-detail-category[data-category="paddle"] { background: var(--color-badge-paddle); }
.article-detail-category[data-category="hiking"]  { background: var(--color-badge-hiking); }

.article-detail-meta { font-size: 0.8rem; color: var(--color-text-muted); display: flex; gap: 12px; }
.article-detail-source { font-weight: 500; }
.article-detail-duration { background: var(--color-primary); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }

.article-detail-title { font-size: 1.6rem; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
.article-title-alt { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 24px; font-style: italic; }
.article-detail-image { margin-bottom: 28px; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; background: url('../img/noimage.svg') center / cover no-repeat; }
.article-detail-image img { width: 100%; height: auto; display: block; }

.article-detail-content { font-size: 1rem; line-height: 1.9; color: var(--color-text); }
.article-detail-content p { margin-bottom: 1.4em; }
.article-detail-content .article-notice { background: #fef3c7; padding: 12px 16px; border-radius: 6px; font-size: 0.85rem; color: #92400e; margin-bottom: 24px; }
.article-detail-content .article-lead { font-weight: 600; font-size: 1.05rem; }

.article-tips { margin: 24px 0; padding: 16px 20px; background: var(--color-bg); border-left: 3px solid var(--color-primary); border-radius: 0 var(--radius) var(--radius) 0; }
.article-tips-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 12px; color: var(--color-primary); }
.article-tips ul { padding-left: 20px; margin: 0; }
.article-tips li { margin-bottom: 6px; line-height: 1.6; font-size: 0.9rem; }
.article-tags { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0; }

.article-detail-actions { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--color-border); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.article-actions-left { display: flex; gap: 8px; }
.article-actions-right { display: flex; gap: 8px; }
.btn-like { font-family: var(--font-family); display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-bg); color: var(--color-text); cursor: pointer; font-size: 0.9rem; transition: all 0.2s; }
.btn-like:hover { border-color: #ef4444; color: #ef4444; }
.btn-like.liked { background: #fef2f2; border-color: #ef4444; color: #ef4444; }
.btn-like.liked .like-icon { fill: #ef4444; stroke: #ef4444; }
.btn-share { font-family: var(--font-family); display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-bg); color: var(--color-text); cursor: pointer; font-size: 0.9rem; transition: all 0.2s; }
.btn-share:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-original { display: inline-block; padding: 10px 24px; background: var(--color-primary); color: #fff; text-decoration: none; border-radius: 8px; font-size: 0.9rem; font-weight: 600; transition: background 0.2s; }
.btn-original:hover { background: var(--color-primary-light); }
.btn-youtube { background: #dc2626; }
.btn-youtube:hover { background: #b91c1c; }

@media (max-width: 768px) {
    .article-detail { padding: 16px 0 40px; }
    .article-detail-title { font-size: 1.3rem; }
    .article-detail-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    .article-detail-meta { flex-wrap: wrap; gap: 8px; }
    .article-detail-content { font-size: 0.95rem; line-height: 1.8; }
    .article-tips { padding: 14px 16px; }
    .article-detail-actions { flex-direction: column; gap: 12px; }
    .article-actions-left, .article-actions-right { width: 100%; }
    .article-actions-right { justify-content: stretch; }
    .btn-original, .btn-youtube { display: block; text-align: center; width: 100%; }
    .btn-like, .btn-share { min-height: 44px; flex: 1; justify-content: center; }
}

@media (max-width: 480px) {
    .article-detail-title { font-size: 1.15rem; }
    .article-detail-content { font-size: 0.9rem; }
    .article-tips li { font-size: 0.85rem; }
}