@charset "UTF-8";
/* ============================================================
 * AZhai NAV - Global Styles
 * ============================================================ */

/* ---------- Variables ---------- */
:root {
    --bg-body: #f6f8fb;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-input: #ffffff;

    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;

    --border-light: #eef2f7;
    --border-medium: #e2e8f0;

    --accent-from: #3b82f6;
    --accent-to: #14b8a6;
    --accent: #2563eb;
    --accent-soft: rgba(59, 130, 246, 0.12);

    --online: #14b8a6;
    --offline: #ef4444;
    --timeout: #f59e0b;

    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 999px;

    --shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 26px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 20px 44px rgba(15, 23, 42, 0.10);

    --max-width: 1500px;
    --bg-overlay-color: rgba(246, 248, 251, 0.82);
}

body.dark {
    --bg-body: #0a0e14;
    --bg-card: rgba(17, 23, 34, 0.85);
    --bg-card-hover: rgba(22, 30, 44, 0.95);
    --bg-input: #111722;

    --text-primary: #eef2f8;
    --text-secondary: #8b98a8;
    --text-tertiary: #566273;

    --border-light: #1c2634;
    --border-medium: #243043;

    --accent: #3b82f6;
    --accent-soft: rgba(59, 130, 246, 0.18);

    --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 26px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 44px rgba(0, 0, 0, 0.55);

    --bg-overlay-color: rgba(10, 14, 20, 0.78);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; margin: 0; min-height: 100%; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: "PingFang SC", "Microsoft YaHei", -apple-system,
                 BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
    overflow-x: hidden;
    transition: background-color .3s ease, color .3s ease;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

/* ---------- Background ---------- */
.bg-image {
    position: fixed; inset: 0; z-index: -2;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    pointer-events: none;
}
.bg-overlay {
    position: fixed; inset: 0; z-index: -1;
    background: var(--bg-overlay-color);
    pointer-events: none;
    transition: background .3s ease;
}
body:not(.has-bg-image) .bg-image { display: none; }
body:not(.has-bg-image) .bg-overlay { background: transparent; }

.bg-glow { position: fixed; inset: 0; z-index: 1; overflow: hidden; pointer-events: none; }
.bg-glow span { position: absolute; border-radius: 50%; filter: blur(90px); }
.bg-glow .g1 { width: 560px; height: 560px; top: -180px; left: -120px;
    background: linear-gradient(135deg, #3b82f6, #14b8a6); opacity: .16; }
.bg-glow .g2 { width: 520px; height: 520px; top: -120px; right: -140px;
    background: radial-gradient(circle, #60a5fa, transparent); opacity: .22; }
.bg-glow .g3 { width: 460px; height: 460px; bottom: -160px; left: 35%;
    background: radial-gradient(circle, #2dd4bf, transparent); opacity: .14; }
body.dark .bg-glow .g1 { opacity: .10; }
body.dark .bg-glow .g2 { opacity: .10; }
body.dark .bg-glow .g3 { opacity: .08; }
body.has-bg-image .bg-glow .g1 { opacity: .10; }
body.has-bg-image .bg-glow .g2 { opacity: .10; }
body.has-bg-image .bg-glow .g3 { opacity: .08; }

/* Content stacking */
.site-header, .container, .site-footer,
.user-header, .user-container, .form-container,
.detail-page, .auth-card, .theme-toggle-fixed {
    position: relative;
    z-index: 2;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 100;
    height: 72px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 32px;
    background: rgba(255, 255, 255, 0.72);
    border-bottom: 1px solid var(--border-medium);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}
body.dark .site-header {
    background: rgba(10, 14, 20, 0.72);
    border-bottom-color: rgba(30, 41, 59, 0.9);
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }

.brand-mark {
    width: 42px; height: 42px;
    flex: 0 0 42px;
    display: grid; place-items: center;
    border-radius: 12px;
    font-size: 20px; font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    box-shadow: 0 8px 20px rgba(59, 130, 246, .28);
}

.brand-text { min-width: 0; }
.brand-text strong {
    display: block;
    font-size: 15px; font-weight: 800;
    letter-spacing: .2px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.brand-text span {
    display: block;
    margin-top: 2px;
    color: var(--text-tertiary);
    font-size: 9.5px;
    letter-spacing: 1px;
    white-space: nowrap;
}

.header-right { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    border: 1px solid var(--border-medium);
    border-radius: 11px;
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 16px;
    transition: .2s;
}
.theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.header-link {
    padding: 9px 14px;
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 13px; font-weight: 600;
    transition: .2s;
}
.header-link:hover {
    background: var(--accent-soft);
    color: var(--text-primary);
}

.header-primary {
    padding: 9px 16px;
    border-radius: 10px;
    color: #fff;
    font-size: 13px; font-weight: 700;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    box-shadow: 0 6px 16px rgba(59, 130, 246, .28);
    transition: .2s;
}
.header-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(59, 130, 246, .34);
}

/* ---------- Background Panel ---------- */
.bg-panel-wrap { position: relative; }
.bg-panel {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 320px; padding: 22px;
    background: var(--bg-card);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: scale(.92) translateY(-8px);
    transform-origin: top right;
    opacity: 0; visibility: hidden;
    transition: all .25s cubic-bezier(.2, 0, 0, 1);
    z-index: 200;
}
.bg-panel.open { transform: scale(1) translateY(0); opacity: 1; visibility: visible; }
.bg-panel h3 { margin: 0 0 16px; font-size: 15px; font-weight: 800; color: var(--text-primary); }
.bg-panel label { display: block; margin-bottom: 6px; font-size: 12px; font-weight: 700; color: var(--text-secondary); }
.bg-panel input[type="text"] {
    width: 100%; padding: 12px 16px; margin-bottom: 16px;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px; outline: none; transition: .2s;
}
.bg-panel input[type="text"]:focus {
    border-color: var(--accent-from);
    box-shadow: 0 0 0 4px var(--accent-soft);
}
.bg-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.bg-btn {
    flex: 1; padding: 10px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-medium);
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px; font-weight: 700;
    cursor: pointer; transition: .2s; white-space: nowrap;
}
.bg-btn.primary {
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    border-color: transparent; color: #fff;
}
.bg-btn:hover { background: var(--accent-soft); color: var(--text-primary); }
.bg-btn.primary:hover { color: #fff; }
.bg-panel .hint { margin-top: 12px; font-size: 10px; color: var(--text-tertiary); line-height: 1.6; text-align: center; }

/* ---------- Container ---------- */
.container {
    width: min(var(--max-width), calc(100% - 40px));
    margin: 0 auto;
    padding: 54px 0 70px;
}

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 30px 0 28px; position: relative; }
.hero-kicker {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px; border-radius: var(--radius-pill);
    background: var(--bg-input);
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
    font-size: 11px; font-weight: 700;
    letter-spacing: 2px; text-transform: uppercase;
    box-shadow: var(--shadow-sm);
}
.hero-kicker::before {
    content: ""; width: 6px; height: 6px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
}
.hero h1 {
    margin: 22px 0 0;
    font-size: clamp(38px, 6.5vw, 60px);
    font-weight: 800; line-height: 1.08; letter-spacing: -2px;
    color: var(--text-primary);
}
.hero h1 .grad {
    background: linear-gradient(120deg, #2563eb, #0d9488);
    -webkit-background-clip: text;
    background-clip: text; color: transparent;
}
.hero p {
    max-width: 620px; margin: 18px auto 0;
    color: var(--text-secondary); font-size: 14px; line-height: 1.9;
}

/* ---------- Search ---------- */
.search-box { max-width: 760px; margin: 30px auto 0; position: relative; }
.search-form {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 8px 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-medium);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
    transition: border-color .2s, box-shadow .2s;
}
.search-form:focus-within {
    border-color: var(--accent-from);
    box-shadow: 0 0 0 4px var(--accent-soft), var(--shadow-md);
}
.search-engine {
    border: 0; outline: 0; background: transparent;
    color: var(--text-secondary);
    font-size: 13px; font-weight: 600;
    cursor: pointer; padding: 6px 8px;
    border-right: 1px solid var(--border-light);
    flex: 0 0 auto; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='3' stroke-linecap='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 4px center;
    padding-right: 20px;
}
.search-engine option { background: #fff; color: #0f172a; }
body.dark .search-engine option { background: #111722; color: #eef2f8; }
.search-input {
    min-width: 0; flex: 1;
    border: 0; outline: 0; background: transparent;
    color: var(--text-primary); font-size: 14px; padding: 6px;
}
.search-input::placeholder { color: var(--text-tertiary); }
.search-button {
    height: 46px; padding: 0 24px;
    border: 0; border-radius: 13px;
    color: #fff; font-size: 13px; font-weight: 700;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    box-shadow: 0 6px 16px rgba(59, 130, 246, .26);
    transition: .2s; white-space: nowrap;
}
.search-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(59, 130, 246, .32);
}
.clear-search {
    display: inline-flex; margin-top: 14px;
    padding: 6px 14px; border-radius: var(--radius-pill);
    color: var(--text-tertiary);
    font-size: 12px; font-weight: 600;
    background: var(--accent-soft); transition: .2s;
}
.clear-search:hover { color: var(--text-primary); }

/* ---------- Messages ---------- */
.message {
    max-width: 680px; margin: 0 auto 24px;
    padding: 14px 20px; border-radius: var(--radius-lg);
    background: rgba(20, 184, 166, .12);
    color: #0d9488;
    border: 1px solid rgba(20, 184, 166, .25);
    text-align: center; font-size: 13px; font-weight: 600;
}
.message.error {
    background: rgba(239, 68, 68, .10);
    color: #dc2626;
    border-color: rgba(239, 68, 68, .22);
}
body.dark .message { color: #2dd4bf; }
body.dark .message.error { color: #f87171; }

/* ---------- Categories ---------- */
.categories {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 10px; margin: 30px 0 36px;
}
.category {
    padding: 9px 16px;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-pill);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 12.5px; font-weight: 600;
    transition: .2s;
}
.category:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    transform: translateY(-1px);
}
.category.active {
    color: #fff; border-color: transparent;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    box-shadow: 0 8px 20px rgba(59, 130, 246, .28);
}

/* ---------- Result Info ---------- */
.result-info {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 18px;
    color: var(--text-tertiary);
    font-size: 12px; font-weight: 600; letter-spacing: .3px;
}
.result-info strong { color: var(--text-primary); font-weight: 800; }

/* ---------- Site Grid ---------- */
.site-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.site-card {
    display: flex; flex-direction: column; min-width: 0;
    padding: 22px;
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform .25s cubic-bezier(.2, .8, .2, 1),
                box-shadow .25s, border-color .25s, background .25s;
    animation: rise .5s both;
}
.site-card:nth-child(2) { animation-delay: .05s; }
.site-card:nth-child(3) { animation-delay: .10s; }
.site-card:nth-child(4) { animation-delay: .15s; }
.site-card:nth-child(5) { animation-delay: .20s; }
.site-card:nth-child(6) { animation-delay: .25s; }
.site-card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: rgba(59, 130, 246, .25);
    box-shadow: var(--shadow-lg);
}

@keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

.site-top { display: flex; align-items: flex-start; gap: 13px; }

.site-icon {
    width: 48px; height: 48px; flex: 0 0 48px;
    display: grid; place-items: center;
    overflow: hidden; border-radius: 14px;
    font-size: 20px; font-weight: 800;
    color: var(--text-primary);
    background: linear-gradient(135deg,
        rgba(59, 130, 246, .12),
        rgba(20, 184, 166, .10));
    border: 1px solid rgba(59, 130, 246, .12);
}
.site-icon img { width: 32px; height: 32px; object-fit: contain; }

.site-main { min-width: 0; flex: 1; }
.site-name {
    display: block; overflow: hidden;
    color: var(--text-primary);
    font-size: 15.5px; font-weight: 700;
    letter-spacing: -.2px;
    white-space: nowrap; text-overflow: ellipsis;
}
.site-url {
    margin-top: 5px; overflow: hidden;
    color: var(--text-tertiary);
    font-size: 10.5px;
    white-space: nowrap; text-overflow: ellipsis;
}

.favorite-button {
    width: 38px; height: 38px;
    display: grid; place-items: center;
    padding: 0; border: 1px solid var(--border-light);
    border-radius: 11px;
    background: var(--bg-input);
    color: var(--text-tertiary);
    font-size: 18px; line-height: 1;
    cursor: pointer; transition: .2s; flex: 0 0 auto;
}
.favorite-button:hover {
    background: rgba(245, 158, 11, .12);
    border-color: rgba(245, 158, 11, .3);
    transform: scale(1.06);
}
.favorite-button.active {
    background: rgba(245, 158, 11, .18);
    border-color: rgba(245, 158, 11, .35);
    color: #f59e0b;
}

.site-description {
    min-height: 42px; margin: 18px 0 15px;
    color: var(--text-secondary);
    font-size: 11.5px; line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-bottom {
    display: flex; align-items: center; justify-content: space-between;
    gap: 8px; margin-top: auto;
}
.site-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }

/* ---------- 分类标签（卡片上 + 详情页通用） ---------- */
.site-category,
.detail-category {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .2px;
    transition: all .2s ease;
    text-decoration: none;
}
body.dark .site-category,
body.dark .detail-category {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-medium);
}
a.site-category,
a.detail-category {
    cursor: pointer;
}
a.site-category:hover,
a.detail-category:hover {
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    border-color: transparent;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(59, 130, 246, .28);
}

/* ---------- 状态徽章 ---------- */
.site-status {
    display: inline-flex; align-items: center; gap: 5px;
    font-size: 10px; font-weight: 600;
    color: var(--text-secondary);
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #cbd5e1; }
.site-status.online  { color: #0d9488; }
.site-status.online .status-dot {
    background: var(--online);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, .18);
    animation: pulse 2s infinite;
}
.site-status.offline { color: #dc2626; }
.site-status.offline .status-dot { background: var(--offline); }
.site-status.timeout { color: #d97706; }
.site-status.timeout .status-dot { background: var(--timeout); }
.site-status.unknown { color: var(--text-tertiary); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: .5; }
}

.site-recommender { color: var(--text-tertiary); font-size: 10px; }
.site-recommender strong { color: var(--text-secondary); font-weight: 700; }

/* ---------- 直达按钮（方案 1：实心渐变） ---------- */
.site-access {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 4px 10px rgba(59, 130, 246, .22);
    transition: .2s;
}
.site-access .arr {
    font-size: 12px;
    display: inline-block;
    transition: transform .2s;
}
.site-card:hover .site-access {
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(59, 130, 246, .32);
}
.site-card:hover .site-access .arr {
    transform: translate(2px, -2px);
}

/* ---------- Empty ---------- */
.empty {
    padding: 90px 24px; text-align: center;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.empty-icon { margin-bottom: 16px; font-size: 44px; color: var(--text-tertiary); opacity: .5; }
.empty h2 { margin: 0 0 8px; font-size: 20px; font-weight: 800; color: var(--text-primary); }
.empty p { margin: 0; font-size: 13px; color: var(--text-secondary); }

/* ---------- Footer ---------- */
.site-footer {
    padding: 30px 20px 40px;
    border-top: 1px solid var(--border-light);
    color: var(--text-tertiary);
    text-align: center; font-size: 11px; font-weight: 600;
}
.site-footer strong { color: var(--text-secondary); font-weight: 800; }
.site-footer .footer-sep { margin: 0 6px; color: var(--text-tertiary); opacity: .6; }
.site-footer a { color: var(--text-secondary); font-weight: 700; transition: .2s; }
.site-footer a:hover {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ============================================================
 *  Responsive
 * ============================================================ */

/* 大屏：1100px 以下，4 列 → 3 列 */
@media (max-width: 1100px) {
    .site-grid { grid-template-columns: repeat(3, 1fr); }
}

/* 平板：900px 以下，3 列 → 2 列 */
@media (max-width: 900px) {
    .site-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 手机：700px 以下 */
@media (max-width: 700px) {
    .site-header { height: 62px; padding: 0 16px; }

    .brand { gap: 10px; }
    .brand-mark { width: 34px; height: 34px; flex: 0 0 34px; font-size: 19px; }
    .brand-text strong { font-size: 13px; }
    .brand-text span   { font-size: 8px; }

    .container { width: calc(100% - 28px); padding: 34px 0 46px; }

    .hero { padding-top: 12px; }
    .hero h1 { letter-spacing: -1.4px; }
    .hero p  { font-size: 13px; }

    .search-form { flex-wrap: wrap; padding: 10px; border-radius: 16px; gap: 6px; }
    .search-engine { border-right: 0; flex: 1 0 100%; border-bottom: 1px solid var(--border-light); padding-bottom: 8px; }
    .search-input  { flex: 1 0 auto; min-width: 120px; }
    .search-button { flex: 0 0 auto; height: 42px; padding: 0 18px; }

    .categories {
        justify-content: flex-start;
        overflow-x: auto; flex-wrap: nowrap;
        padding-bottom: 6px;
        margin: 22px 0 28px;
        scrollbar-width: none;
    }
    .categories::-webkit-scrollbar { display: none; }
    .category { flex: 0 0 auto; }

    .site-grid { grid-template-columns: 1fr; gap: 12px; }
    .site-card { padding: 18px; }

    .bg-panel {
        position: fixed;
        top: 72px;
        right: 12px;
        left: 12px;
        width: auto;
        transform-origin: top center;
    }
}

@media (max-width: 400px) {
    .bg-panel { left: 8px; right: 8px; }
}
/* ============================================================
 *  搜索引擎切换按钮组（搜索框上方）
 * ============================================================ */
.engine-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 14px;
}

.engine-tab {
    padding: 6px 14px;
    border: 1px solid var(--border-medium);
    border-radius: 999px;
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: .2s;
    white-space: nowrap;
}

.engine-tab:hover {
    border-color: var(--accent);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.engine-tab.active {
    background: linear-gradient(135deg, var(--accent-from), var(--accent-to));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 6px 14px rgba(59, 130, 246, .28);
}

/* 手机端：横向滚动 */
@media (max-width: 700px) {
    .engine-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 6px;
        margin-bottom: 10px;
        scrollbar-width: none;
    }
    .engine-tabs::-webkit-scrollbar { display: none; }
    .engine-tab { flex: 0 0 auto; }
}