/* ============================================================
   v6-pages.css v2.0 — V6 新页面豪华暗色主题样式
   排行榜 / 成就 / 段位 / 每日任务 / 学习计划 / 错题本 / 社区 / AI中心 / 海报
   薛老师编程网校 xuelaoshi.cn  全端响应式适配
   ============================================================ */

/* ========================================
   CSS 变量 & 基础颜色系统
   ======================================== */
.v6-page {
    --v6-bg-deep: #070b19;
    --v6-bg: #0b1120;
    --v6-bg-card: rgba(255,255,255,0.03);
    --v6-bg-hover: rgba(255,255,255,0.06);
    --v6-bg-active: rgba(14,165,233,0.08);
    --v6-border: rgba(255,255,255,0.08);
    --v6-border-hover: rgba(255,255,255,0.15);
    --v6-border-active: rgba(14,165,233,0.35);
    --v6-text: #f8fafc;
    --v6-text-secondary: #94a3b8;
    --v6-text-muted: #64748b;
    --v6-blue: #38bdf8;
    --v6-blue-deep: #0ea5e9;
    --v6-purple: #818cf8;
    --v6-amber: #fbbf24;
    --v6-green: #34d399;
    --v6-red: #f87171;
    --v6-pink: #f472b6;
    --v6-radius-sm: 10px;
    --v6-radius: 14px;
    --v6-radius-lg: 20px;
    --v6-radius-xl: 24px;
    --v6-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --v6-shadow: 0 4px 16px rgba(0,0,0,0.35);
    --v6-shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
    --v6-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: calc(100vh - 64px);
    background: var(--v6-bg-deep);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(14,165,233,0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(99,102,241,0.05) 0%, transparent 50%),
        radial-gradient(ellipse 50% 30% at 20% 70%, rgba(16,185,129,0.04) 0%, transparent 50%);
    color: var(--v6-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* 全宽沉浸模式 — 背景铺满整个 body，内容用容器控宽（排行榜等） */
.v6-page-full {
    position: relative;
    overflow: hidden;
    width: 100%;
    margin: 0;
}

/* 内容容器：背景占满整屏，内容居中控宽 */
.v6-container,
.v6-container-wide {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    box-sizing: border-box;
}
.v6-container { max-width: 1200px; }
.v6-container-wide { max-width: 1440px; }

@media (max-width: 767px) {
    .v6-container,
    .v6-container-wide { padding-left: 1rem; padding-right: 1rem; }
}

/* ========================================
   HERO 头部横幅
   ======================================== */
.v6-hero {
    position: relative; overflow: hidden;
    padding: 2.5rem 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: var(--v6-radius-xl);
    background: linear-gradient(135deg, rgba(14,165,233,0.08) 0%, rgba(99,102,241,0.06) 40%, rgba(16,185,129,0.04) 100%);
    border: 1px solid var(--v6-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.v6-hero::before {
    content: '';
    position: absolute; top: -50%; right: -20%;
    width: 300px; height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14,165,233,0.12) 0%, transparent 70%);
    pointer-events: none;
}
.v6-hero::after {
    content: '';
    position: absolute; bottom: -30%; left: -10%;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.v6-hero-content { position: relative; z-index: 1; }
.v6-hero-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 900; margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.v6-hero-desc {
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    color: var(--v6-text-secondary);
    max-width: 600px; line-height: 1.6;
}

/* 紧凑版 Hero（用于排行榜等次页面） */
.v6-hero-compact {
    padding: 2rem 1.25rem;
    margin-bottom: 1.25rem;
    border-radius: var(--v6-radius-lg);
    background: linear-gradient(135deg, rgba(14,165,233,0.06) 0%, rgba(99,102,241,0.04) 50%, rgba(16,185,129,0.03) 100%);
}
.v6-hero-compact .v6-hero-bg-shine {
    position: absolute; inset: 0; overflow: hidden;
    border-radius: inherit; pointer-events: none;
}
.v6-hero-compact .v6-hero-bg-shine::before {
    content: '';
    position: absolute; top: -60%; right: -10%;
    width: 240px; height: 240px; border-radius: 50%;
    background: radial-gradient(circle, rgba(14,165,233,0.14) 0%, transparent 70%);
}
.v6-hero-compact .v6-hero-bg-shine::after {
    content: '';
    position: absolute; bottom: -50%; left: -5%;
    width: 160px; height: 160px; border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
}
.v6-hero-badge {
    display: inline-flex; align-items: center; gap: 0.35rem;
    padding: 0.3rem 0.75rem; border-radius: 999px;
    font-size: 0.7rem; font-weight: 700; letter-spacing: 0.04em;
    background: rgba(14,165,233,0.12); color: var(--v6-blue);
    border: 1px solid rgba(14,165,233,0.25);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}
.v6-hero-subtitle {
    font-size: 0.9rem; color: var(--v6-text-secondary);
    max-width: 480px; line-height: 1.5; margin-top: 0.3rem;
}

/* ========================================
   玻璃卡片 — 核心卡片组件
   ======================================== */
.v6-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.015) 100%);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
    padding: 1.25rem;
    transition: var(--v6-transition);
    position: relative; overflow: hidden;
}
.v6-card::after {
    content: '';
    position: absolute; inset: 0; border-radius: inherit;
    background: linear-gradient(135deg, rgba(14,165,233,0.04) 0%, transparent 50%);
    opacity: 0; transition: opacity 0.4s ease;
    pointer-events: none;
}
.v6-card:hover {
    border-color: var(--v6-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--v6-shadow);
}
.v6-card:hover::after { opacity: 1; }

.v6-card-active {
    border-color: var(--v6-border-active) !important;
    background: rgba(14,165,233,0.06) !important;
    box-shadow: 0 0 20px rgba(14,165,233,0.08);
}

.v6-card-highlight {
    border-color: rgba(245,158,11,0.25);
    background: rgba(245,158,11,0.04);
}

/* ========================================
   统计数值卡片
   ======================================== */
.v6-stat-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
    padding: 1.25rem 1rem;
    text-align: center;
    transition: var(--v6-transition);
    position: relative; overflow: hidden;
}
.v6-stat-card::before {
    content: '';
    position: absolute; top: 0; left: 50%; transform: translateX(-50%);
    width: 40px; height: 2px;
    border-radius: 0 0 4px 4px;
    transition: width 0.3s ease;
}
.v6-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--v6-shadow);
    border-color: var(--v6-border-hover);
}
.v6-stat-card:hover::before { width: 80px; }
.v6-stat-card.sky::before  { background: linear-gradient(90deg, var(--v6-blue-deep), var(--v6-blue)); }
.v6-stat-card.amber::before{ background: linear-gradient(90deg, #f59e0b, var(--v6-amber)); }
.v6-stat-card.green::before{ background: linear-gradient(90deg, #059669, var(--v6-green)); }
.v6-stat-card.purple::before{ background: linear-gradient(90deg, #7c3aed, var(--v6-purple)); }

.v6-stat-icon  { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 0.25rem; display: block; }
.v6-stat-value {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 900; margin-bottom: 0.15rem;
    background: linear-gradient(135deg, #f1f5f9, #cbd5e1);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}
.v6-stat-label { font-size: 0.75rem; color: var(--v6-text-muted); font-weight: 500; letter-spacing: 0.02em; }

/* ========================================
   按钮系统
   ======================================== */
.v6-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    padding: 0.55rem 1.25rem; border-radius: 10px;
    font-size: 0.875rem; font-weight: 600;
    cursor: pointer; transition: var(--v6-transition);
    text-decoration: none; border: none;
    position: relative; overflow: hidden;
    white-space: nowrap; user-select: none;
}
.v6-btn::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    opacity: 0; transition: opacity 0.3s ease;
    pointer-events: none;
}
.v6-btn:hover::after { opacity: 1; }
.v6-btn:active { transform: scale(0.97); }

.v6-btn-primary {
    background: linear-gradient(135deg, var(--v6-blue-deep), #6366f1);
    color: #fff; box-shadow: 0 4px 14px rgba(14,165,233,0.3);
}
.v6-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(14,165,233,0.4);
}
.v6-btn-secondary {
    background: rgba(255,255,255,0.06); border: 1px solid var(--v6-border);
    color: var(--v6-text-secondary);
}
.v6-btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    color: var(--v6-text);
    border-color: var(--v6-border-hover);
}
.v6-btn-ghost {
    background: transparent; color: var(--v6-text-muted);
    border: 1px solid transparent;
}
.v6-btn-ghost:hover {
    color: var(--v6-text-secondary);
    border-color: var(--v6-border);
    background: rgba(255,255,255,0.04);
}
.v6-btn-amber {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff; box-shadow: 0 4px 14px rgba(245,158,11,0.3);
}
.v6-btn-amber:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(245,158,11,0.4);
}
.v6-btn-sky {
    background: var(--v6-blue-deep); color: #fff;
    box-shadow: 0 4px 14px rgba(14,165,233,0.25);
}
.v6-btn-sky:hover {
    background: var(--v6-blue);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(14,165,233,0.35);
}
.v6-btn-sm { padding: 0.35rem 0.85rem; font-size: 0.78rem; border-radius: 8px; }

/* ========================================
   Tab 标签栏
   ======================================== */
.v6-tab-bar {
    display: flex; flex-wrap: wrap; gap: 0.5rem;
    padding: 0.4rem; background: rgba(255,255,255,0.02);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
    backdrop-filter: blur(10px);
}
.v6-tab {
    padding: 0.5rem 1.1rem; border-radius: 10px;
    font-size: 0.85rem; font-weight: 600;
    cursor: pointer; transition: var(--v6-transition);
    text-decoration: none; border: 1px solid transparent;
    white-space: nowrap; user-select: none;
}
.v6-tab-default {
    color: var(--v6-text-secondary);
    background: transparent;
}
.v6-tab-default:hover {
    color: var(--v6-text);
    background: rgba(255,255,255,0.04);
}
.v6-tab-active-sky, .v6-tab.active {
    background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(99,102,241,0.12));
    color: var(--v6-blue);
    border-color: var(--v6-border-active);
    box-shadow: 0 2px 8px rgba(14,165,233,0.12);
}
.v6-tab-active-amber {
    background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(249,115,22,0.1));
    color: var(--v6-amber);
    border-color: rgba(245,158,11,0.3);
    box-shadow: 0 2px 8px rgba(245,158,11,0.12);
}

.v6-tab-bar-sub {
    background: rgba(255,255,255,0.01);
    border-style: dashed;
    margin-top: 0.75rem;
}
.v6-tab-bar-sub .v6-tab {
    padding: 0.4rem 0.9rem;
    font-size: 0.8rem;
}

/* ========================================
   表格排行榜
   ======================================== */
.v6-table-header {
    display: grid; gap: 0.5rem;
    padding: 0.7rem 1rem;
    background: rgba(255,255,255,0.03);
    border-radius: var(--v6-radius-sm) var(--v6-radius-sm) 0 0;
    font-size: 0.72rem; font-weight: 600;
    color: var(--v6-text-muted);
    text-transform: uppercase; letter-spacing: 0.05em;
}
.v6-table-row {
    display: grid; gap: 0.5rem;
    padding: 0.85rem 1rem; align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.02);
    transition: var(--v6-transition);
}
.v6-table-row:last-child { border-bottom: none; }
.v6-table-row:hover { background: rgba(255,255,255,0.025); }
.v6-table-row-highlight {
    background: linear-gradient(90deg, rgba(14,165,233,0.06), transparent) !important;
    border-left: 3px solid var(--v6-blue-deep);
}

/* ========================================
   排名数字
   ======================================== */
.v6-rank-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; border-radius: 8px;
    font-weight: 700; font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
}
.v6-rank-1 { background: linear-gradient(135deg, #FFD700, #F59E0B); color: #1a1a2e; box-shadow: 0 2px 10px rgba(255,215,0,0.3); }
.v6-rank-2 { background: linear-gradient(135deg, #C0C0C0, #A0A0A0); color: #1a1a2e; box-shadow: 0 2px 10px rgba(192,192,192,0.25); }
.v6-rank-3 { background: linear-gradient(135deg, #CD7F32, #A0522D); color: #fff; box-shadow: 0 2px 10px rgba(205,127,50,0.25); }
.v6-rank-normal { color: var(--v6-text-muted); }

/* ========================================
   排行榜专用组件
   ======================================== */
.v6-my-rank-card {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    padding: 1rem 1.25rem; margin-bottom: 1.25rem;
    background: linear-gradient(135deg, rgba(14,165,233,0.1) 0%, rgba(99,102,241,0.06) 100%);
    border: 1px solid var(--v6-border-active);
    border-radius: var(--v6-radius);
    box-shadow: 0 4px 20px rgba(14,165,233,0.1);
}
.v6-my-rank-main { display: flex; align-items: baseline; gap: 0.5rem; }
.v6-my-rank-label { font-size: 0.75rem; color: var(--v6-text-secondary); font-weight: 500; }
.v6-my-rank-number {
    font-size: 1.5rem; font-weight: 900;
    background: linear-gradient(135deg, #fff, var(--v6-blue));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.v6-my-rank-total { font-size: 0.75rem; color: var(--v6-text-muted); }
.v6-my-rank-type { font-size: 0.8rem; color: var(--v6-text-secondary); font-weight: 600; }

.v6-card-table { padding: 0; overflow: hidden; }
.v6-table-leaderboard { grid-template-columns: 70px 1fr 110px 130px 100px; }

.v6-table-row.v6-row-me {
    background: linear-gradient(90deg, rgba(14,165,233,0.1), rgba(99,102,241,0.05));
    border-left: 3px solid var(--v6-blue-deep);
}
.v6-table-row.v6-row-me:hover { background: linear-gradient(90deg, rgba(14,165,233,0.14), rgba(99,102,241,0.08)); }

.v6-cell-rank, .v6-cell-user, .v6-cell-rank-tag, .v6-cell-score, .v6-cell-stars { display: flex; align-items: center; }

.v6-user { display: flex; align-items: center; gap: 0.75rem; }
.v6-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; font-weight: 700; color: #fff; flex-shrink: 0;
    background: linear-gradient(135deg, var(--v6-blue-deep), var(--v6-purple));
    border: 2px solid rgba(255,255,255,0.1);
}
.v6-avatar-sm { width: 34px; height: 34px; font-size: 0.85rem; }
.v6-user-info { display: flex; align-items: center; gap: 0.4rem; }
.v6-username { font-weight: 600; color: var(--v6-text); }
.v6-you-badge {
    padding: 0.1rem 0.4rem; border-radius: 4px;
    font-size: 0.6rem; font-weight: 700;
    background: rgba(14,165,233,0.15); color: var(--v6-blue);
    border: 1px solid rgba(14,165,233,0.25);
}

.v6-medal-gold, .v6-medal-silver, .v6-medal-bronze, .v6-rank-number {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; border-radius: 8px;
    font-weight: 800; font-size: 0.85rem; font-family: 'JetBrains Mono', monospace;
}
.v6-medal-gold {
    background: linear-gradient(135deg, #FFD700, #F59E0B);
    color: #1a1a2e; box-shadow: 0 2px 10px rgba(255,215,0,0.3);
}
.v6-medal-silver {
    background: linear-gradient(135deg, #E2E8F0, #94A3B8);
    color: #1a1a2e; box-shadow: 0 2px 10px rgba(148,163,184,0.25);
}
.v6-medal-bronze {
    background: linear-gradient(135deg, #F59E0B, #D97706);
    color: #fff; box-shadow: 0 2px 10px rgba(245,158,11,0.25);
}
.v6-rank-number { color: var(--v6-text-muted); font-weight: 700; }

.v6-rank-badge {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.25rem 0.65rem; border-radius: 999px;
    font-size: 0.7rem; font-weight: 700; letter-spacing: 0.02em;
    background: color-mix(in srgb, var(--rank-color, #94a3b8) 16%, transparent);
    color: var(--rank-color, #94a3b8);
    border: 1px solid color-mix(in srgb, var(--rank-color, #94a3b8) 30%, transparent);
    box-shadow: 0 0 8px color-mix(in srgb, var(--rank-color, #94a3b8) 15%, transparent);
    text-shadow: 0 0 6px color-mix(in srgb, var(--rank-color, #94a3b8) 20%, transparent);
}

.v6-cell-score strong {
    font-family: 'JetBrains Mono', monospace; font-size: 1rem; font-weight: 700;
    color: var(--v6-text);
}
.v6-star {
    color: var(--v6-amber); margin-right: 0.15rem; font-size: 0.85rem;
    text-shadow: 0 0 6px rgba(251,191,36,0.3);
}

.v6-empty-state {
    padding: 3rem 1.5rem; text-align: center;
    color: var(--v6-text-secondary);
}
.v6-empty-icon { font-size: 2.5rem; margin-bottom: 0.75rem; opacity: 0.7; }
.v6-empty-state p { font-size: 1rem; font-weight: 600; color: var(--v6-text); margin: 0 0 0.3rem; }
.v6-empty-state span { font-size: 0.8rem; color: var(--v6-text-muted); }

/* ========================================
   段位卡片 (rank.php)
   ======================================== */
.v6-rank-hero {
    position: relative; overflow: hidden;
    border-radius: var(--v6-radius-xl); padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--v6-border);
    backdrop-filter: blur(10px);
}
.v6-rank-hero-deco {
    position: absolute; top: -50%; right: -25%;
    width: 350px; height: 350px;
    border-radius: 50%; opacity: 0.1; pointer-events: none;
}
.v6-rank-hero-icon {
    position: absolute; top: 1rem; right: 1rem;
    font-size: clamp(3rem, 8vw, 5rem); opacity: 0.1;
    pointer-events: none;
}
.v6-rank-avatar {
    width: 80px; height: 80px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; flex-shrink: 0;
    background: rgba(255,255,255,0.05);
    border: 2px solid var(--v6-border);
    box-shadow: 0 0 30px rgba(14,165,233,0.1);
}

/* 段位之路 */
.v6-rank-path-item {
    border-radius: var(--v6-radius);
    border: 1px solid var(--v6-border);
    background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, transparent 100%);
    padding: 1rem; display: flex; align-items: center; gap: 1rem;
    transition: var(--v6-transition);
    position: relative; overflow: hidden;
}
.v6-rank-path-item:hover {
    border-color: var(--v6-border-hover);
    box-shadow: var(--v6-shadow-sm);
}
.v6-rank-path-item.locked {
    opacity: 0.35; filter: grayscale(0.5);
}
.v6-rank-path-item.locked:hover { opacity: 0.45; }
.v6-rank-path-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; flex-shrink: 0;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--v6-border);
}
.v6-mini-progress {
    height: 8px; background: rgba(255,255,255,0.05);
    border-radius: 999px; overflow: hidden;
    max-width: 220px;
}
.v6-mini-progress-bar {
    height: 100%; border-radius: 999px;
    background: linear-gradient(90deg, var(--v6-blue-deep), var(--v6-purple));
    transition: width 0.8s cubic-bezier(0.16,1,0.3,1);
}

/* ========================================
   成就系统
   ======================================== */
.v6-achievement-card {
    border-radius: var(--v6-radius);
    border: 1px solid var(--v6-border);
    background: linear-gradient(135deg, rgba(255,255,255,0.025) 0%, transparent 100%);
    padding: 1.25rem; transition: var(--v6-transition);
    position: relative; overflow: hidden;
}
.v6-achievement-card.earned::before {
    content: ''; position: absolute; top: 0; right: 0;
    width: 0; height: 0;
    border-style: solid;
    border-width: 0 30px 30px 0;
    border-color: transparent var(--v6-green) transparent transparent;
}
.v6-achievement-card.earned:hover {
    transform: translateY(-3px);
    box-shadow: var(--v6-shadow);
    border-color: var(--v6-border-hover);
}
.v6-achievement-card.unearned {
    opacity: 0.35; filter: grayscale(0.6);
}
.v6-achievement-card.unearned:hover {
    opacity: 0.5; filter: grayscale(0.4);
}
.v6-tier-copper  { color: #CD7F32; }
.v6-tier-silver  { color: #C0C0C0; }
.v6-tier-gold    { color: #FFD700; }
.v6-tier-diamond { color: #38bdf8; }
.v6-tier-legend  {
    background: linear-gradient(135deg, #FFD700, #FF6B6B, #845EC2);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   每日任务
   ======================================== */
.v6-task-card {
    border-radius: var(--v6-radius);
    border: 1px solid var(--v6-border);
    background: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, transparent 100%);
    padding: 1.15rem; transition: var(--v6-transition);
    display: flex; align-items: center; gap: 1rem;
}
.v6-task-card:hover {
    border-color: var(--v6-border-hover);
    box-shadow: var(--v6-shadow-sm);
}
.v6-task-card.completed { opacity: 0.5; }
.v6-task-card.completed .v6-task-title { text-decoration: line-through; }
.v6-task-icon {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; flex-shrink: 0;
    border: 1px solid var(--v6-border);
}
.v6-task-icon.sky   { background: rgba(14,165,233,0.1); color: var(--v6-blue); }
.v6-task-icon.amber { background: rgba(245,158,11,0.1); color: var(--v6-amber); }
.v6-task-icon.green { background: rgba(16,185,129,0.1); color: var(--v6-green); }
.v6-task-icon.purple{ background: rgba(139,92,246,0.1); color: var(--v6-purple); }
.v6-task-title { font-weight: 600; color: var(--v6-text); font-size: 0.9rem; }

/* ========================================
   进度条
   ======================================== */
.v6-progress-bg {
    height: 10px; background: rgba(255,255,255,0.05);
    border-radius: 999px; overflow: hidden;
    position: relative;
}
.v6-progress-bar {
    height: 100%; border-radius: 999px;
    background: linear-gradient(90deg, var(--v6-blue-deep), var(--v6-purple), var(--v6-blue-deep));
    background-size: 200% 100%;
    animation: v6-progressShine 3s ease-in-out infinite;
    transition: width 1s cubic-bezier(0.16,1,0.3,1);
    position: relative;
}
.v6-progress-bar.amber-grad {
    background: linear-gradient(90deg, #f59e0b, #fbbf24, #f59e0b);
    background-size: 200% 100%;
}
.v6-progress-bar.green-grad {
    background: linear-gradient(90deg, #059669, #34d399, #059669);
    background-size: 200% 100%;
}
@keyframes v6-progressShine {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ========================================
   徽章/标签
   ======================================== */
.v6-badge {
    font-size: 0.72rem; padding: 0.15rem 0.65rem;
    border-radius: 999px; display: inline-flex; align-items: center;
    font-weight: 600; letter-spacing: 0.01em;
}
.v6-badge-bronze  { background: rgba(205,127,50,0.15); color: #daa06d; border: 1px solid rgba(205,127,50,0.2); }
.v6-badge-silver  { background: rgba(192,192,192,0.15); color: #d4d4d4; border: 1px solid rgba(192,192,192,0.2); }
.v6-badge-gold    { background: rgba(255,215,0,0.12); color: #ffd700; border: 1px solid rgba(255,215,0,0.2); }
.v6-badge-platinum{ background: rgba(79,219,255,0.12); color: #7ce4ff; border: 1px solid rgba(79,219,255,0.2); }
.v6-badge-diamond { background: rgba(167,139,250,0.12); color: #c4b5fd; border: 1px solid rgba(167,139,250,0.2); }
.v6-badge-national{ background: rgba(255,69,0,0.12); color: #ff8c69; border: 1px solid rgba(255,69,0,0.2); }

/* ========================================
   头像占位
   ======================================== */
.v6-avatar-placeholder {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(14,165,233,0.15), rgba(99,102,241,0.12));
    display: flex; align-items: center; justify-content: center;
    font-size: 0.78rem; font-weight: 600; color: var(--v6-blue);
    flex-shrink: 0; border: 1px solid rgba(14,165,233,0.2);
}

/* ========================================
   表单输入框
   ======================================== */
.v6-input {
    background: rgba(255,255,255,0.04);
    border: 1.5px solid var(--v6-border);
    border-radius: var(--v6-radius-sm);
    padding: 0.6rem 0.85rem;
    color: var(--v6-text); font-size: 0.875rem;
    transition: var(--v6-transition);
    width: 100%; box-sizing: border-box;
}
.v6-input:focus {
    outline: none;
    border-color: rgba(14,165,233,0.5);
    background: rgba(255,255,255,0.06);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}
.v6-input::placeholder { color: var(--v6-text-muted); }

.v6-textarea {
    background: rgba(255,255,255,0.04);
    border: 1.5px solid var(--v6-border);
    border-radius: var(--v6-radius-sm);
    padding: 0.75rem 0.85rem;
    color: var(--v6-text); font-size: 0.875rem;
    resize: vertical; transition: var(--v6-transition);
    width: 100%; box-sizing: border-box;
    line-height: 1.6;
}
.v6-textarea:focus {
    outline: none;
    border-color: rgba(14,165,233,0.5);
    background: rgba(255,255,255,0.06);
    box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

/* ========================================
   AI 面板
   ======================================== */
.v6-ai-output {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
    padding: 1.25rem; font-size: 0.875rem;
    color: #cbd5e1; line-height: 1.75;
    white-space: pre-wrap; word-break: break-word;
}
.v6-ai-output code {
    background: rgba(255,255,255,0.06);
    padding: 0.15rem 0.4rem; border-radius: 4px;
    font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
}
.v6-ai-loading {
    display: flex; align-items: center; gap: 0.5rem;
    color: var(--v6-text-muted); font-size: 0.875rem;
}
.v6-ai-dot { animation: v6-pulse 1.4s infinite both; }
.v6-ai-dot:nth-child(2) { animation-delay: 0.2s; }
.v6-ai-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes v6-pulse {
    0%, 100% { opacity: 0.15; }
    50% { opacity: 0.9; }
}

/* ========================================
   模态弹窗
   ======================================== */
.v6-modal-overlay {
    position: fixed; inset: 0; z-index: 999;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center;
    padding: 1rem;
    animation: v6-fadeIn 0.25s ease;
}
.v6-modal-content {
    position: relative; width: 100%; max-width: 500px; max-height: 85vh; overflow-y: auto;
    background: linear-gradient(160deg, #1e293b, #0f172a, #1a1a2e);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--v6-radius-xl);
    padding: 1.5rem;
    box-shadow: 0 25px 60px rgba(0,0,0,0.6);
    animation: v6-scaleUp 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes v6-fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes v6-scaleUp { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: scale(1); } }

/* ========================================
   分页器
   ======================================== */
.v6-pagination {
    display: flex; align-items: center; justify-content: center;
    gap: 0.35rem; flex-wrap: wrap;
}
.v6-page-link {
    min-width: 34px; height: 34px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 600;
    transition: var(--v6-transition);
    text-decoration: none; user-select: none;
}
.v6-page-link-default {
    color: var(--v6-text-muted);
    border: 1px solid var(--v6-border);
    background: transparent;
}
.v6-page-link-default:hover {
    background: rgba(255,255,255,0.06);
    border-color: var(--v6-border-hover);
    color: var(--v6-text-secondary);
}
.v6-page-link-active {
    background: linear-gradient(135deg, rgba(14,165,233,0.2), rgba(99,102,241,0.15));
    color: var(--v6-blue);
    border: 1px solid var(--v6-border-active);
    box-shadow: 0 2px 8px rgba(14,165,233,0.15);
}

/* ========================================
   海报/分享卡片
   ======================================== */
.v6-poster {
    max-width: 375px; margin: 0 auto;
    background: linear-gradient(160deg, #1e293b, #0f172a, #1a1a2e, #0f172a);
    border-radius: var(--v6-radius-xl);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 1.75rem; text-align: center;
    box-shadow: 0 25px 60px rgba(0,0,0,0.5);
}
.v6-poster-stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
    margin: 1rem 0;
}
.v6-poster-stat {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius); padding: 0.85rem;
}
.v6-poster-stat-value {
    font-size: 1.5rem; font-weight: 800;
    background: linear-gradient(135deg, var(--v6-blue), var(--v6-purple));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.v6-poster-stat-label { font-size: 0.72rem; color: var(--v6-text-muted); font-weight: 500; }

/* ========================================
   空状态
   ======================================== */
.v6-empty {
    text-align: center; padding: 4rem 1.5rem; color: var(--v6-text-muted);
}
.v6-empty-icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.3; }
.v6-empty-title { font-size: 1.1rem; font-weight: 700; color: var(--v6-text-secondary); margin-bottom: 0.4rem; }
.v6-empty-desc  { font-size: 0.85rem; color: var(--v6-text-muted); }

/* ========================================
   分隔线 & 装饰
   ======================================== */
.v6-divider {
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--v6-border), transparent);
    margin: 1.5rem 0;
}
.v6-glow-dot {
    display: inline-block; width: 8px; height: 8px;
    border-radius: 50%; margin-right: 0.4rem;
}
.v6-glow-dot.online { background: var(--v6-green); box-shadow: 0 0 8px var(--v6-green); }
.v6-glow-dot.busy   { background: var(--v6-amber); box-shadow: 0 0 8px var(--v6-amber); }

/* ========================================
   动画关键帧
   ======================================== */
@keyframes v6-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
@keyframes v6-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.v6-gradient-text {
    background: linear-gradient(135deg, var(--v6-blue), var(--v6-purple), var(--v6-blue));
    background-size: 200% auto;
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: v6-shimmer 4s linear infinite;
}

/* ========================================
   工具类网格 & 布局
   ======================================== */
.v6-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.v6-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.v6-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

.v6-flex       { display: flex; }
.v6-flex-between { display: flex; align-items: center; justify-content: space-between; }
.v6-flex-center   { display: flex; align-items: center; justify-content: center; }
.v6-flex-wrap     { flex-wrap: wrap; }
.v6-gap-2 { gap: 0.5rem; }
.v6-gap-3 { gap: 0.75rem; }
.v6-gap-4 { gap: 1rem; }
.v6-gap-6 { gap: 1.5rem; }

.v6-max-w-4xl { max-width: 896px; margin-left: auto; margin-right: auto; }
.v6-max-w-5xl { max-width: 1024px; margin-left: auto; margin-right: auto; }

.v6-px-4  { padding-left: 1rem; padding-right: 1rem; }
.v6-py-6  { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.v6-py-8  { padding-top: 2rem; padding-bottom: 2rem; }
.v6-mb-2  { margin-bottom: 0.5rem; }
.v6-mb-4  { margin-bottom: 1rem; }
.v6-mb-6  { margin-bottom: 1.5rem; }
.v6-mb-8  { margin-bottom: 2rem; }
.v6-mb-10 { margin-bottom: 2.5rem; }
.v6-mt-4  { margin-top: 1rem; }
.v6-mt-6  { margin-top: 1.5rem; }
.v6-mt-8  { margin-top: 2rem; }

.v6-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ========================================
   文字工具类
   ======================================== */
.v6-text-white   { color: var(--v6-text); }
.v6-text-slate   { color: var(--v6-text-secondary); }
.v6-text-muted   { color: var(--v6-text-muted); }
.v6-text-sky     { color: var(--v6-blue); }
.v6-text-amber   { color: var(--v6-amber); }
.v6-text-green   { color: var(--v6-green); }
.v6-text-red     { color: var(--v6-red); }
.v6-text-purple  { color: var(--v6-purple); }
.v6-text-pink    { color: var(--v6-pink); }

.v6-text-xs  { font-size: 0.75rem; }
.v6-text-sm  { font-size: 0.875rem; }
.v6-text-base { font-size: 1rem; }
.v6-text-lg  { font-size: 1.125rem; }
.v6-text-xl  { font-size: 1.25rem; }
.v6-text-2xl { font-size: 1.5rem; }
.v6-text-3xl { font-size: 1.875rem; }

.v6-font-bold     { font-weight: 700; }
.v6-font-semibold { font-weight: 600; }
.v6-font-medium   { font-weight: 500; }

/* ========================================
   社区页面组件
   ======================================== */
.v6-community-layout {
    display: flex; gap: 1.5rem; align-items: flex-start;
    padding: 1.5rem;
    max-width: 1400px; margin: 0 auto;
    box-sizing: border-box;
}
.v6-comm-sidebar { width: 260px; flex-shrink: 0; display: flex; flex-direction: column; gap: 1rem; position: sticky; top: 80px; }
.v6-comm-main { flex: 1; min-width: 0; }

.v6-comm-panel {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
    padding: 1rem;
}
.v6-comm-panel-title {
    font-size: 0.75rem; font-weight: 700; color: var(--v6-text-muted);
    text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 0.75rem;
}
.v6-comm-panel-header {
    display: flex; align-items: center; gap: 0.75rem;
    margin-bottom: 0.75rem;
}
.v6-comm-username { font-size: 0.9rem; font-weight: 700; color: var(--v6-text); margin: 0; }
.v6-comm-user-meta { font-size: 0.7rem; color: var(--v6-text-muted); margin: 0.15rem 0 0; }

.v6-comm-section-link {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.55rem 0.65rem; border-radius: 8px;
    font-size: 0.82rem; color: var(--v6-text-secondary); text-decoration: none;
    transition: var(--v6-transition); margin-bottom: 0.15rem;
}
.v6-comm-section-link:hover { background: var(--v6-bg-hover); color: var(--v6-text); }
.v6-comm-section-link.active {
    background: rgba(14,165,233,0.12); color: var(--v6-blue);
    border: 1px solid rgba(14,165,233,0.2);
}
.v6-comm-section-icon { font-size: 1rem; }
.v6-comm-section-name { flex: 1; }
.v6-comm-section-count {
    font-size: 0.65rem; padding: 0.1rem 0.45rem; border-radius: 999px;
    background: rgba(255,255,255,0.06); color: var(--v6-text-muted);
}

.v6-comm-hot-item {
    display: flex; flex-direction: column; gap: 0.15rem;
    padding: 0.45rem 0.65rem; border-radius: 6px;
    text-decoration: none; transition: var(--v6-transition);
    margin-bottom: 0.15rem;
}
.v6-comm-hot-item:hover { background: var(--v6-bg-hover); }
.v6-comm-hot-title {
    font-size: 0.78rem; color: var(--v6-text-secondary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.v6-comm-hot-meta { font-size: 0.65rem; color: var(--v6-text-muted); }

/* Avatar 子尺寸 */
.v6-avatar-sidebar { width: 42px; height: 42px; font-size: 1.05rem; }
.v6-avatar-xs { width: 22px; height: 22px; font-size: 0.6rem; border-width: 1px; }
.v6-avatar-xxs { width: 18px; height: 18px; font-size: 0.55rem; border-width: 1px; }

/* 按钮变体 */
.v6-btn-sm { padding: 0.4rem 0.85rem; font-size: 0.75rem; border-radius: 10px; }
.v6-btn-primary { background: linear-gradient(135deg, #0ea5e9, #6366f1); color: #fff; }
.v6-btn-primary:hover { box-shadow: 0 4px 16px rgba(14,165,233,0.3); transform: translateY(-1px); }
.v6-btn-accent { background: linear-gradient(135deg, #f59e0b, #ef4444); color: #fff; }
.v6-btn-accent:hover { box-shadow: 0 4px 16px rgba(245,158,11,0.3); transform: translateY(-1px); }
.v6-btn-ghost { background: transparent; color: var(--v6-text-secondary); border: 1px solid var(--v6-border); }
.v6-btn-ghost:hover { background: var(--v6-bg-hover); color: var(--v6-text); }
.v6-btn-post-new { padding: 0.7rem 1.5rem; font-size: 0.95rem; font-weight: 700; border-radius: var(--v6-radius); }

/* 搜索栏 */
.v6-search-bar {
    display: flex; align-items: center; gap: 0.5rem;
    margin-bottom: 1rem; padding: 0.5rem;
    background: rgba(255,255,255,0.03); border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius);
}
.v6-search-icon { font-size: 1.1rem; opacity: 0.5; padding-left: 0.5rem; flex-shrink: 0; }
.v6-search-input {
    flex: 1; background: transparent; border: none; outline: none;
    color: var(--v6-text); font-size: 0.85rem; padding: 0.4rem 0;
}
.v6-search-input::placeholder { color: var(--v6-text-muted); }
.v6-search-clear { font-size: 0.75rem; color: var(--v6-text-muted); text-decoration: none; padding: 0 0.5rem; white-space: nowrap; }
.v6-search-clear:hover { color: var(--v6-red); }

/* 列表工具栏 */
.v6-list-toolbar {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    margin-bottom: 0.75rem; flex-wrap: wrap;
}
.v6-list-info { font-size: 0.8rem; color: var(--v6-text-secondary); }
.v6-list-info strong { color: var(--v6-text); }
.v6-search-hint { color: var(--v6-text-muted); font-style: italic; }
.v6-sort-group { display: flex; gap: 0.25rem; }
.v6-sort-btn {
    padding: 0.35rem 0.75rem; border-radius: 8px; font-size: 0.75rem; font-weight: 600;
    color: var(--v6-text-secondary); text-decoration: none;
    border: 1px solid transparent; transition: var(--v6-transition);
}
.v6-sort-btn:hover { background: var(--v6-bg-hover); color: var(--v6-text); }
.v6-sort-btn.active { background: rgba(14,165,233,0.12); color: var(--v6-blue); border-color: rgba(14,165,233,0.25); }

/* 帖子卡片 */
.v6-post-list { display: flex; flex-direction: column; gap: 0.5rem; }
.v6-post-card {
    display: block; text-decoration: none;
    background: rgba(255,255,255,0.02); border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius); padding: 1rem 1.15rem;
    transition: var(--v6-transition);
}
.v6-post-card:hover { background: rgba(255,255,255,0.04); border-color: var(--v6-border-hover); transform: translateY(-1px); }
.v6-post-card-body { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.v6-post-card-main { flex: 1; min-width: 0; }
.v6-post-card-title-row { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.4rem; }
.v6-post-card-title {
    font-size: 0.95rem; font-weight: 600; color: var(--v6-text);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.v6-post-card-meta {
    display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap;
    font-size: 0.72rem; color: var(--v6-text-muted);
}
.v6-post-card-author { display: flex; align-items: center; gap: 0.35rem; color: var(--v6-text-secondary); }
.v6-post-card-stats {
    display: flex; gap: 0.5rem; flex-shrink: 0;
}
.v6-post-stat-badge {
    display: flex; align-items: center; gap: 0.2rem; padding: 0.25rem 0.55rem;
    border-radius: 8px; font-size: 0.7rem; font-weight: 600;
    background: rgba(255,255,255,0.04); color: var(--v6-text-muted);
    transition: var(--v6-transition);
}
.v6-post-card:hover .v6-post-stat-badge { background: rgba(255,255,255,0.07); }

/* 标签 */
.v6-tag { display: inline-flex; align-items: center; padding: 0.15rem 0.5rem; border-radius: 5px; font-size: 0.65rem; font-weight: 700; letter-spacing: 0.02em; }
.v6-tag-sm { padding: 0.1rem 0.3rem; font-size: 0.6rem; border-radius: 4px; }
.v6-tag-red { background: rgba(239,68,68,0.15); color: #f87171; border: 1px solid rgba(239,68,68,0.25); }
.v6-tag-gold { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.25); }

/* 帖子详情 */
.v6-card-post-detail { padding: 1.5rem; margin-bottom: 1rem; }
.v6-post-detail-header { margin-bottom: 1rem; }
.v6-post-author { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.v6-post-author-info { display: flex; align-items: center; gap: 0.5rem; }
.v6-post-author-name { font-size: 0.95rem; font-weight: 700; color: var(--v6-text); }
.v6-post-meta-tags { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.v6-post-time { font-size: 0.72rem; color: var(--v6-text-muted); }
.v6-post-location { font-size: 0.7rem; color: var(--v6-text-muted); }
.v6-post-detail-title { font-size: 1.3rem; font-weight: 800; color: var(--v6-text); margin: 0 0 0.75rem; line-height: 1.4; }
.v6-post-detail-content {
    font-size: 0.9rem; line-height: 1.8; color: var(--v6-text-secondary);
    white-space: pre-wrap; word-break: break-word;
    padding: 1rem 0; border-top: 1px solid var(--v6-border); border-bottom: 1px solid var(--v6-border);
}
.v6-post-detail-footer {
    display: flex; align-items: center; gap: 1.25rem; margin-top: 1rem; flex-wrap: wrap;
    font-size: 0.8rem; color: var(--v6-text-muted);
}
.v6-post-stat { display: flex; align-items: center; gap: 0.2rem; }
.v6-post-action {
    display: inline-flex; align-items: center; gap: 0.25rem;
    background: none; border: none; cursor: pointer;
    font-size: 0.8rem; color: var(--v6-text-muted);
    padding: 0.25rem 0.5rem; border-radius: 6px; transition: var(--v6-transition);
}
.v6-post-action:hover { background: rgba(255,255,255,0.05); color: var(--v6-text); }
.v6-post-action.liked { color: #f87171; background: rgba(248,113,113,0.08); }
.v6-post-action.liked:hover { background: rgba(248,113,113,0.14); }

/* 回复区 */
.v6-replies-section { margin-top: 1.5rem; }
.v6-replies-title { font-size: 1rem; font-weight: 700; color: var(--v6-text); margin: 0 0 1rem; }
.v6-replies-count { color: var(--v6-text-muted); font-weight: 500; }
.v6-reply-card {
    background: rgba(255,255,255,0.015); border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius-sm); padding: 0.9rem 1rem; margin-bottom: 0.5rem;
    transition: var(--v6-transition);
}
.v6-reply-card:hover { background: rgba(255,255,255,0.03); }
.v6-reply-nested { margin-left: 1.5rem; border-left: 2px solid rgba(14,165,233,0.2); }
.v6-reply-ref { font-size: 0.7rem; color: var(--v6-blue); margin-bottom: 0.4rem; font-weight: 600; }
.v6-reply-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.v6-reply-author { font-size: 0.82rem; font-weight: 700; color: var(--v6-text); }
.v6-reply-time { font-size: 0.68rem; color: var(--v6-text-muted); margin-left: auto; }
.v6-reply-content { font-size: 0.82rem; color: var(--v6-text-secondary); line-height: 1.6; white-space: pre-wrap; word-break: break-word; }
.v6-reply-actions { display: flex; gap: 0.75rem; margin-top: 0.65rem; padding-top: 0.5rem; border-top: 1px solid var(--v6-border); }

/* 回复表单 */
.v6-card-reply-form { padding: 1rem; margin-top: 1rem; }
.v6-reply-to-label { font-size: 0.75rem; color: var(--v6-blue); margin-bottom: 0.5rem; font-weight: 600; }
.v6-reply-form-actions { display: flex; align-items: center; justify-content: space-between; margin-top: 0.75rem; }
.v6-char-count { font-size: 0.7rem; color: var(--v6-text-muted); }

/* 分页 */
.v6-pagination { display: flex; align-items: center; justify-content: center; gap: 0.35rem; margin-top: 1.5rem; flex-wrap: wrap; }
.v6-page-btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 36px; height: 36px; padding: 0 0.6rem;
    border-radius: 8px; font-size: 0.8rem; font-weight: 600;
    color: var(--v6-text-secondary); text-decoration: none;
    border: 1px solid var(--v6-border); transition: var(--v6-transition);
}
.v6-page-btn:hover { background: var(--v6-bg-hover); color: var(--v6-text); border-color: var(--v6-border-hover); }
.v6-page-btn.active { background: rgba(14,165,233,0.15); color: var(--v6-blue); border-color: rgba(14,165,233,0.3); }

/* 输入框 */
.v6-input {
    width: 100%; background: rgba(255,255,255,0.04); border: 1px solid var(--v6-border);
    border-radius: var(--v6-radius-sm); padding: 0.6rem 0.85rem; color: var(--v6-text);
    font-size: 0.85rem; outline: none; transition: var(--v6-transition); box-sizing: border-box;
}
.v6-input:focus { border-color: var(--v6-border-active); background: rgba(255,255,255,0.06); box-shadow: 0 0 0 3px rgba(14,165,233,0.06); }
.v6-textarea { resize: vertical; min-height: 100px; font-family: inherit; }
.v6-input::placeholder { color: var(--v6-text-muted); }

/* 模态框 */
.v6-modal-overlay {
    display: none; position: fixed; inset: 0; z-index: 1000;
    background: rgba(0,0,0,0.65); backdrop-filter: blur(6px);
    justify-content: center; align-items: center; padding: 1rem;
}
.v6-modal-overlay.show { display: flex; }
.v6-modal {
    background: linear-gradient(135deg, #0f172a, #0b1120);
    border: 1px solid var(--v6-border); border-radius: var(--v6-radius-lg);
    padding: 1.5rem; width: 100%; max-width: 560px;
    box-shadow: var(--v6-shadow-lg);
    animation: v6ModalIn 0.3s cubic-bezier(0.4,0,0.2,1);
}
@keyframes v6ModalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
.v6-modal-title { font-size: 1.15rem; font-weight: 800; color: var(--v6-text); margin: 0 0 1rem; }
.v6-modal-label { display: block; font-size: 0.75rem; font-weight: 600; color: var(--v6-text-muted); margin-bottom: 0.3rem; }
.v6-modal-editor { position: relative; margin-bottom: 0.75rem; }
.v6-modal-actions { display: flex; justify-content: flex-end; gap: 0.75rem; margin-top: 1rem; }

/* 返回链接 */
.v6-back-link { display: inline-flex; align-items: center; font-size: 0.82rem; color: var(--v6-blue); text-decoration: none; margin-bottom: 1rem; font-weight: 600; transition: var(--v6-transition); }
.v6-back-link:hover { color: var(--v6-blue-deep); transform: translateX(-2px); }

/* 空状态紧凑版 */
.v6-empty-compact { padding: 1.5rem 1rem; }
.v6-empty-icon-sm { font-size: 1.5rem; margin-bottom: 0.3rem; }

/* ========================================
   自定义滚动条
   ======================================== */
.v6-page::-webkit-scrollbar,
.v6-modal-content::-webkit-scrollbar {
    width: 6px;
}
.v6-page::-webkit-scrollbar-track,
.v6-modal-content::-webkit-scrollbar-track {
    background: transparent;
}
.v6-page::-webkit-scrollbar-thumb,
.v6-modal-content::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
}
.v6-page::-webkit-scrollbar-thumb:hover,
.v6-modal-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.15);
}

/* ========================================
   📱 响应式 — 平板 (<1024px)
   ======================================== */
@media (max-width: 1024px) {
    .v6-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .v6-grid-3 { grid-template-columns: repeat(2, 1fr); }
    .v6-hero { padding: 2rem 1.25rem; }
}

/* ========================================
   📱 响应式 — 手机 (<768px)
   ======================================== */
@media (max-width: 767px) {
    .v6-grid-2,
    .v6-grid-3,
    .v6-grid-4 { grid-template-columns: 1fr; }

    .v6-grid-2.v6-sm-grid-2 { grid-template-columns: repeat(2, 1fr); }

    .v6-hero {
        padding: 1.5rem 1rem;
        border-radius: var(--v6-radius-lg);
    }
    .v6-hero-title { font-size: 1.3rem; }
    .v6-hero-desc  { font-size: 0.82rem; }

    .v6-stat-card { padding: 1rem 0.75rem; }
    .v6-stat-value { font-size: 1.2rem; }

    .v6-card { padding: 1rem; }

    .v6-tab-bar {
        gap: 0.35rem; padding: 0.3rem;
    }
    .v6-tab {
        padding: 0.4rem 0.75rem; font-size: 0.78rem;
        flex: 1 1 auto; text-align: center;
    }

    .v6-table-header { display: none; }
    .v6-table-row {
        flex-direction: column; gap: 0.3rem;
        padding: 0.85rem 0.75rem;
    }
    .v6-table-leaderboard { grid-template-columns: 1fr; }
    .v6-table-leaderboard > div { display: flex; justify-content: space-between; align-items: center; width: 100%; }
    .v6-table-leaderboard .v6-cell-rank { justify-content: flex-start; }
    .v6-table-leaderboard .v6-cell-score strong { font-size: 1.1rem; }
    .v6-table-leaderboard > div::before {
        content: attr(data-label);
        font-size: 0.7rem; color: var(--v6-text-muted); font-weight: 500;
        margin-right: auto;
    }
    .v6-table-leaderboard .v6-cell-user::before,
    .v6-table-leaderboard .v6-cell-rank-tag::before,
    .v6-table-leaderboard .v6-cell-stars::before { display: none; }
    .v6-table-leaderboard .v6-cell-user { justify-content: flex-start; }
    .v6-table-leaderboard .v6-rank-badge { margin-left: auto; }

    .v6-my-rank-card { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .v6-my-rank-number { font-size: 1.25rem; }

    .v6-empty-icon { font-size: 2rem; }

    /* 社区移动端 */
    .v6-community-layout { flex-direction: column; padding: 0.75rem; }
    .v6-comm-sidebar { width: 100%; position: static; gap: 0.75rem; }
    .v6-comm-panel { padding: 0.85rem; }
    .v6-comm-hot-item { padding: 0.35rem 0.5rem; }
    .v6-comm-hot-title { font-size: 0.75rem; }

    .v6-post-card-body { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .v6-post-card-stats { align-self: flex-start; }
    .v6-post-card-title { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
    .v6-search-bar { flex-wrap: wrap; }

    .v6-card-post-detail { padding: 1rem; }
    .v6-post-detail-title { font-size: 1.1rem; }
    .v6-post-detail-footer { gap: 0.75rem; }
    .v6-reply-nested { margin-left: 0.75rem; }

    .v6-pagination { gap: 0.25rem; }
    .v6-page-btn { min-width: 32px; height: 32px; font-size: 0.75rem; }

    .v6-modal { padding: 1.25rem; max-width: 95vw; }

    .v6-btn {
        padding: 0.5rem 1rem; font-size: 0.82rem;
    }

    .v6-rank-hero {
        padding: 1.25rem;
    }
    .v6-rank-avatar {
        width: 60px; height: 60px; font-size: 1.8rem;
    }

    .v6-modal-content {
        margin: 0.5rem; padding: 1.25rem;
        max-height: 90vh;
        border-radius: var(--v6-radius-lg);
    }

    .v6-poster {
        max-width: 100%;
    }
    .v6-poster-stats {
        grid-template-columns: 1fr 1fr;
    }
}

/* ========================================
   📱 响应式 — 小屏手机 (<480px)
   ======================================== */
@media (max-width: 479px) {
    .v6-grid-2.v6-sm-grid-2 { grid-template-columns: 1fr; }
    .v6-stat-card { padding: 0.85rem 0.5rem; }
    .v6-stat-icon { font-size: 1.2rem; }
    .v6-stat-value { font-size: 1rem; }
    .v6-stat-label { font-size: 0.68rem; }
    .v6-poster-stats { grid-template-columns: 1fr; }
    .v6-btn { width: 100%; justify-content: center; }
    .v6-task-card { flex-direction: column; text-align: center; }
    .v6-task-icon { margin: 0 auto; }
}

/* ========================================
   📱 触屏优化
   ======================================== */
@media (hover: none) and (pointer: coarse) {
    .v6-card:hover,
    .v6-stat-card:hover,
    .v6-task-card:hover,
    .v6-rank-path-item:hover,
    .v6-btn:hover {
        transform: none;
        box-shadow: none;
    }
    .v6-card:active,
    .v6-stat-card:active,
    .v6-btn:active {
        transform: scale(0.98);
    }
}