/* ============================================
   沈忆世界 · 黑白极简风格
   ============================================ */

/* === 全局重置 === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.18);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.55);
    --text-tertiary: rgba(255, 255, 255, 0.3);
    --accent-white: #ffffff;
    --accent-gray: rgba(255, 255, 255, 0.5);
    --gradient-hero: linear-gradient(180deg, #000000 0%, #0a0a0a 50%, #111111 100%);
    --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-card-hover: 0 12px 60px rgba(0, 0, 0, 0.6);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-slow: 0.45s cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    /* 新缓动曲线：更丝滑的 ease-out */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ===== 全局动画关键帧 ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.92); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes navUnderline {
    from { transform: scaleX(0); opacity: 0; }
    to   { transform: scaleX(1); opacity: 1; }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.05); }
    50%      { box-shadow: 0 0 20px 4px rgba(255, 255, 255, 0.08); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* ===== 新增动画关键帧 ===== */

/* 从右侧滑入 */
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* 从左侧滑入 */
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* 缩放 + 淡入 */
@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.85); }
    to   { opacity: 1; transform: scale(1); }
}

/* 模糊 + 上移淡入 */
@keyframes fadeInBlur {
    from { opacity: 0; filter: blur(8px); transform: translateY(20px); }
    to   { opacity: 1; filter: blur(0); transform: translateY(0); }
}

/* 上滑 + 弹入 */
@keyframes slideUpBounce {
    0%   { opacity: 0; transform: translateY(50px); }
    60%  { opacity: 1; transform: translateY(-6px); }
    80%  { transform: translateY(2px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* 旋转入场 */
@keyframes rotateIn {
    from { opacity: 0; transform: rotate(-8deg) scale(0.9); }
    to   { opacity: 1; transform: rotate(0deg) scale(1); }
}

/* 拉伸入场 */
@keyframes stretchIn {
    from { opacity: 0; transform: scaleY(0); transform-origin: top; }
    to   { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* 浮动粒子轨迹变体 */
/* 浮动粒子轨迹变体 */
@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0) scale(1); opacity: 0.2; }
    25% { transform: translateY(-20px) translateX(8px) scale(1.1); opacity: 0.6; }
    50% { transform: translateY(-40px) translateX(-5px) scale(1.2); opacity: 0.8; }
    75% { transform: translateY(-15px) translateX(10px) scale(1.05); opacity: 0.5; }
}

@keyframes floatDrift {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.15; }
    25%  { transform: translate(15px, -25px) scale(1.2); opacity: 0.5; }
    50%  { transform: translate(-10px, -45px) scale(1.4); opacity: 0.7; }
    75%  { transform: translate(20px, -20px) scale(1.1); opacity: 0.4; }
}

@keyframes floatOrbit {
    0%   { transform: rotate(0deg) translateX(20px) rotate(0deg); opacity: 0.2; }
    50%  { opacity: 0.6; }
    100% { transform: rotate(360deg) translateX(20px) rotate(-360deg); opacity: 0.2; }
}

/* ===== 滚动渐入工具类 ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out-expo),
                transform 0.7s var(--ease-out-expo);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 各区块差异化入场 */
.reveal-scale {
    transition: opacity 0.7s var(--ease-out-expo),
                transform 0.7s var(--ease-out-expo);
}
.reveal-scale.visible {
    animation: fadeInScale 0.7s var(--ease-out-expo) forwards;
}

.reveal-right {
    transition: opacity 0.6s var(--ease-out-expo),
                transform 0.6s var(--ease-out-expo);
}
.reveal-right.visible {
    animation: slideInRight 0.6s var(--ease-out-expo) forwards;
}

.reveal-blur {
    transition: opacity 0.8s var(--ease-out-expo),
                transform 0.8s var(--ease-out-expo),
                filter 0.8s var(--ease-out-expo);
}
.reveal-blur.visible {
    animation: fadeInBlur 0.8s var(--ease-out-expo) forwards;
}

.reveal-bounce {
    transition: opacity 0.6s var(--ease-out-back),
                transform 0.6s var(--ease-out-back);
}
.reveal-bounce.visible {
    animation: slideUpBounce 0.6s var(--ease-out-back) forwards;
}

/* 延迟控制 */
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.40s; }
.reveal-delay-6 { transition-delay: 0.48s; }
.reveal-delay-7 { transition-delay: 0.56s; }
.reveal-delay-8 { transition-delay: 0.64s; }

/* ===== 加载骨架屏 ===== */
.skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'PingFang SC', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === 导航栏 === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(24px) saturate(1.2);
    -webkit-backdrop-filter: blur(24px) saturate(1.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background 0.4s var(--ease-out-expo),
                border-color 0.4s var(--ease-out-expo),
                box-shadow 0.4s var(--ease-out-expo);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.92);
    border-bottom-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 48px;
}

.nav-brand .logo {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 24px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 1.5px;
    background: var(--text-primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
    opacity: 0.3;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: scaleX(1);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

/* === Hero === */
.hero {
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding-top: 48px;
}

/* Hero 白色朦胧光晕 — 跟随鼠标 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(400px circle at var(--hero-glow-x, 50%) var(--hero-glow-y, 50%),
        rgba(255, 255, 255, 0.07) 0%,
        transparent 60%
    );
    pointer-events: none;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.8s var(--ease-out-expo);
}

.hero:hover::before {
    opacity: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 40px 0;
}

.hero-badge {
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    padding: 4px 14px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.8px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 4.2rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.05;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 3px;
    margin-bottom: 40px;
}

/* 复制区域 */
.copy-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.copy-row {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 10px 10px 18px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: border-color var(--transition);
}

.copy-row:hover {
    border-color: var(--border-hover);
}

.copy-label {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-right: 4px;
}

.copy-value {
    font-size: 1rem;
    font-weight: 600;
    font-family: 'SF Mono', 'SF Pro Text', 'Courier New', monospace;
    letter-spacing: -0.2px;
    color: var(--text-primary);
}

.copy-btn {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    border-radius: var(--radius-sm);
    padding: 6px 14px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    position: relative;
    overflow: hidden;
    user-select: none;
}

.copy-btn:active {
    transform: scale(0.95);
}

.copy-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity var(--transition);
}

.copy-btn:active::after {
    opacity: 1;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.14);
}

.copy-btn.copied {
    background: rgba(255, 255, 255, 0.9);
    color: #000;
}

/* === 状态卡片 === */
.status-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.status-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-slow);
}

.status-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.status-header h2 {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.2px;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.status-badge.online {
    color: var(--text-primary);
}

.status-badge.offline {
    color: var(--text-tertiary);
}

.status-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-badge.online .dot {
    background: var(--text-primary);
    animation: pulse 2s ease infinite;
}

.status-badge.offline .dot {
    background: var(--text-tertiary);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.status-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}

.stat-item {
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    padding: 14px 18px;
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.stat-value.highlight {
    color: var(--text-primary);
}

.status-motd {
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 10px;
}

.status-motd .stat-label {
    margin-bottom: 6px;
}

.motd-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    font-weight: 400;
}

/* === 皮肤上传 === */
.skin-section {
    padding: 0 0 60px 0;
    background: var(--bg-secondary);
}

.skin-card {
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition);
    cursor: pointer;
}

.skin-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.skin-card-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.skin-card-text {
    flex: 1;
}

.skin-card-text h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.skin-card-text p {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.skin-open-btn {
    flex-shrink: 0;
    padding: 8px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.skin-open-btn:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 36px;
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.modal-overlay.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.modal-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

/* 预览区 */
.skin-preview {
    width: 128px;
    height: 128px;
    margin: 0 auto 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.02);
}

.skin-preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.72rem;
}

.skin-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
}

.size-info {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
    min-height: 18px;
}

/* 文件选择 */
.file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: 16px;
}

.file-label:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* 模型选择 */
.model-options {
    margin-bottom: 16px;
}

.model-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.model-group {
    display: flex;
    gap: 10px;
}

.model-radio {
    flex: 1;
    cursor: pointer;
}

.model-radio input {
    display: none;
}

.model-radio-label {
    display: block;
    text-align: center;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.model-radio input:checked + .model-radio-label {
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

/* 上传按钮 */
.upload-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    margin-bottom: 12px;
}

.upload-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.16);
}

.upload-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* 进度条 */
.progress-bar {
    height: 3px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* 状态消息 */
.status-msg {
    text-align: center;
    font-size: 0.82rem;
    min-height: 20px;
    margin-bottom: 12px;
}

.status-msg.error {
    color: rgba(255, 255, 255, 0.5);
}

.status-msg.success {
    color: var(--text-primary);
}

/* 结果 */
.result-box {
    text-align: center;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.result-icon {
    color: var(--text-primary);
    margin-bottom: 8px;
}

.result-text {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.result-cmd {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    margin-bottom: 10px;
}

.result-cmd code {
    flex: 1;
    font-size: 0.78rem;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Courier New', monospace;
    word-break: break-all;
    text-align: left;
}

.copy-cmd-btn {
    flex-shrink: 0;
    padding: 6px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.copy-cmd-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.copy-cmd-btn.copied {
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.result-hint {
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

/* === 公告板 === */
.announcement-section {
    padding: 60px 0 80px;
    background: var(--bg-primary);
}

.announcement-list {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.announcement-loading {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    padding: 20px;
}

.announcement-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    padding: 20px;
}

.announcement-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    transition: all var(--transition);
}

.announcement-item:hover {
    border-color: var(--border-hover);
}

.announcement-item.pinned {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
}

.announcement-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.announcement-pin {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

.announcement-title {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.2px;
    flex: 1;
}

.announcement-date {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.announcement-content {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: 0;
}

/* === 关于 === */
.about-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.8px;
    margin-bottom: 48px;
    color: var(--text-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 14px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 22px;
    text-align: center;
    transition: all var(--transition-slow);
}

.about-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.card-icon {
    font-size: 2.4rem;
    margin-bottom: 14px;
    display: block;
    transition: transform var(--transition-bounce);
}

.about-card:hover .card-icon {
    transform: scale(1.15);
}

.about-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    opacity: 0;
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255,255,255,0.04), transparent 60%);
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.about-card {
    position: relative;
    overflow: hidden;
}

.about-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.2px;
}

.about-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* === 加入游戏 === */
.join-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.join-steps {
    max-width: 580px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.step {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    transition: background 0.25s ease, border-color 0.25s ease;
}

.step:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 2px;
    letter-spacing: -0.2px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    line-height: 1.4;
}

.inline-code {
    display: inline-block;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    padding: 1px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Courier New', monospace;
    font-size: 0.82rem;
    margin-top: 4px;
}

.qq-step-btn {
    margin-top: 6px;
    padding: 4px 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition);
    font-family: inherit;
}

.qq-step-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

.qq-step-btn.copied {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
    color: #000;
}

/* === 登录/注册模态框 === */
.auth-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.auth-overlay.show {
    opacity: 1;
    visibility: visible;
}

.auth-modal {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 36px;
    max-width: 380px;
    width: 100%;
    position: relative;
    transform: scale(0.92) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

.auth-overlay.show .auth-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.auth-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.auth-close:hover {
    color: var(--text-primary);
}

.auth-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.auth-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.auth-field {
    margin-bottom: 12px;
}

.auth-input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.auth-input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.auth-input::placeholder {
    color: var(--text-tertiary);
}

.auth-msg {
    font-size: 0.8rem;
    min-height: 20px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.5);
}

.auth-msg.error {
    color: rgba(255, 255, 255, 0.5);
}

.auth-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    margin-bottom: 16px;
}

.auth-btn:hover {
    background: rgba(255, 255, 255, 0.16);
}

.auth-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.auth-btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    margin-top: 8px;
}

.auth-btn-outline:hover {
    border-color: var(--border-hover);
}

.auth-switch {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.auth-switch a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.auth-switch a:hover {
    color: var(--text-primary);
}

.auth-switch + .auth-switch {
    margin-top: 10px;
}

/* === 友情赞助模态框 === */
.sponsor-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.sponsor-overlay.show {
    opacity: 1;
    visibility: visible;
}

.sponsor-modal {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 36px;
    max-width: 440px;
    width: 100%;
    position: relative;
    transform: scale(0.92) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

.sponsor-overlay.show .sponsor-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.sponsor-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.sponsor-close:hover {
    color: var(--text-primary);
}

.sponsor-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.sponsor-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.sponsor-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sponsor-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 18px;
    transition: all var(--transition);
    cursor: pointer;
}

.sponsor-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-hover);
}

.sponsor-card-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.sponsor-card-text {
    flex: 1;
}

.sponsor-card-text h3 {
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.sponsor-card-text p {
    font-size: 0.76rem;
    color: var(--text-secondary);
}

.sponsor-card-btn {
    flex-shrink: 0;
    padding: 7px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.sponsor-card-btn:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
}

.sponsor-card-btn.copied {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.9);
    color: #000;
}

/* 二维码大图 */
.sponsor-qr-area {
    margin-top: 20px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.sponsor-qr-img {
    max-width: 240px;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.sponsor-qr-hint {
    margin-top: 10px;
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* === 响应式补充 === */
@media (max-width: 480px) {
    .auth-modal {
        padding: 28px 24px;
    }
    .sponsor-modal {
        padding: 28px 24px;
    }
    .sponsor-card {
        padding: 12px 14px;
    }
}

/* === 管理后台 === */
.admin-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    z-index: 4000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.admin-overlay.show {
    opacity: 1;
    visibility: visible;
}

.admin-modal {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 32px;
    max-width: 380px;
    width: 100%;
    position: relative;
    transform: scale(0.92) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

.admin-modal-wide {
    max-width: 700px;
}

.admin-overlay.show .admin-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.admin-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.admin-close:hover {
    color: var(--text-primary);
}

.admin-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.admin-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.admin-field {
    margin-bottom: 12px;
}

.admin-input {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.admin-input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.admin-input-sm {
    width: auto;
    min-width: 180px;
    padding: 7px 12px;
    font-size: 0.8rem;
}

.admin-input::placeholder {
    color: var(--text-tertiary);
}

.admin-msg {
    font-size: 0.8rem;
    min-height: 20px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.5);
}

.admin-msg.error {
    color: rgba(255, 255, 255, 0.5);
}

.admin-btn {
    width: 100%;
    padding: 11px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.admin-btn:hover {
    background: rgba(255, 255, 255, 0.16);
}

.admin-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.admin-btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
}

.admin-btn-outline:hover {
    border-color: var(--border-hover);
}

.admin-btn-sm {
    padding: 7px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 0.78rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.admin-btn-sm:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.06);
}

.admin-btn-sm.danger {
    border-color: rgba(255, 80, 80, 0.3);
    color: rgba(255, 120, 120, 0.8);
}

.admin-btn-sm.danger:hover {
    border-color: rgba(255, 80, 80, 0.6);
    background: rgba(255, 80, 80, 0.08);
}

/* Tabs */
.admin-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0;
}

.admin-tab {
    padding: 8px 18px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    font-size: 0.82rem;
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}

.admin-tab:hover {
    color: var(--text-secondary);
}

.admin-tab.active {
    color: var(--text-primary);
    border-bottom-color: rgba(255, 255, 255, 0.5);
}

.admin-tab-content {
    display: none;
}

.admin-tab-content.active {
    display: block;
}

/* Toolbar */
.admin-toolbar {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 12px;
}

/* Table */
.admin-table-wrap {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
}

.admin-table th {
    text-align: left;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-tertiary);
    font-weight: 500;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    font-size: 0.68rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1;
}

.admin-table td {
    padding: 8px 10px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.78rem;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.admin-loading {
    text-align: center;
    color: var(--text-tertiary);
    padding: 20px !important;
}

.admin-cell-actions {
    display: flex;
    gap: 4px;
    flex-wrap: nowrap;
}

.admin-cell-actions .admin-btn-sm {
    padding: 4px 10px;
    font-size: 0.7rem;
}

/* 重置密码弹窗 */
.admin-reset-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 4100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.admin-reset-overlay.show {
    opacity: 1;
    visibility: visible;
}

.admin-reset-box {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 340px;
    width: 100%;
}

.admin-reset-box h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.admin-reset-box p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
}

.admin-reset-box .admin-field {
    margin-bottom: 10px;
}

.admin-reset-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.admin-reset-actions .admin-btn-sm {
    flex: 1;
    text-align: center;
}

/* 公告编辑弹窗 */
.admin-ann-form {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 4100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.admin-ann-form.show {
    opacity: 1;
    visibility: visible;
}

.admin-ann-form-box {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 440px;
    width: 100%;
}

.admin-ann-form-box h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 14px;
}

.admin-ann-form-box .admin-field {
    margin-bottom: 10px;
}

.admin-textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
    resize: vertical;
    min-height: 80px;
}

.admin-textarea:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.admin-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 10px;
}

.admin-checkbox input {
    accent-color: rgba(255, 255, 255, 0.5);
}

/* === 全服喊话模态框 === */
.chat-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.chat-overlay.show {
    opacity: 1;
    visibility: visible;
}

.chat-modal {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 32px;
    max-width: 420px;
    width: 100%;
    position: relative;
    transform: scale(0.92) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

.chat-overlay.show .chat-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.chat-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.chat-close:hover {
    color: var(--text-primary);
}

.chat-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.chat-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.chat-desc strong {
    color: var(--text-primary);
}

.chat-field {
    margin-bottom: 12px;
}

.chat-input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.chat-input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.chat-input::placeholder {
    color: var(--text-tertiary);
}

.chat-msg {
    font-size: 0.8rem;
    min-height: 20px;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.5);
}

.chat-msg.error {
    color: rgba(255, 120, 120, 0.7);
}

.chat-msg.success {
    color: rgba(120, 255, 120, 0.7);
}

.chat-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.chat-btn:hover {
    background: rgba(255, 255, 255, 0.16);
}

.chat-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}


/* === RCON 控制台 === */
.admin-rcon-output {
    background: #0a0a0a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    height: 200px;
    overflow-y: auto;
    font-family: 'SF Mono', 'Courier New', monospace;
    font-size: 0.78rem;
    line-height: 1.6;
}

.admin-rcon-line {
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
}

.admin-rcon-line+.admin-rcon-line {
    margin-top: 2px;
}

.admin-rcon-cmd {
    color: rgba(100, 200, 255, 0.8);
}

.admin-rcon-result {
    color: var(--text-primary);
}

.admin-rcon-error {
    color: rgba(255, 120, 120, 0.8);
}

.admin-rcon-info {
    color: var(--text-tertiary);
    font-style: italic;
}

/* === TPS 监控图表 === */
.tps-chart-wrap {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-bottom: 10px;
    height: 240px;
    position: relative;
}

.tps-chart-wrap canvas {
    width: 100% !important;
    height: 100% !important;
}

.tps-legend {
    display: flex;
    gap: 20px;
    margin-bottom: 10px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.tps-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tps-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    display: inline-block;
}

.tps-dot-bar {
    background: rgba(255, 255, 255, 0.6);
}

.tps-dot-line {
    background: rgba(100, 200, 255, 0.8);
    border-radius: 50%;
}

.tps-summary {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    text-align: center;
}

/* === 底部 === */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 28px 0;
    text-align: center;
}

.footer.reveal.visible {
    animation: fadeInBlur 1s var(--ease-out-expo) forwards;
}

.footer p {
    color: var(--text-tertiary);
    font-size: 0.78rem;
}

.footer-mc {
    margin-top: 4px;
    font-size: 0.68rem;
    opacity: 0.4;
}

/* === 复制 Toast === */
.copy-toast {
    position: fixed;
    top: 68px;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    z-index: 99999;
    background: rgba(22, 22, 24, 0.92);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 12px 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    text-align: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.copy-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* === 粒子 === */
.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.15;
}

/* === 导航栏滚动效果增强 === */
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.92);
    border-bottom-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.4);
}

/* === 状态数字计数动画 === */
.stat-value.count-up {
    animation: countUp 0.45s cubic-bezier(0.25, 0.1, 0.25, 1) forwards;
}

/* === Hero 标签徽章动画 === */
.hero-badge {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.1, 0.25, 1) both;
}

.hero-title {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.1, 0.25, 1) 0.15s both;
}

.hero-subtitle {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.1, 0.25, 1) 0.3s both;
}

.copy-group {
    animation: fadeInUp 0.8s cubic-bezier(0.25, 0.1, 0.25, 1) 0.45s both;
}

/* === 步骤数字悬停效果 === */
.step:hover .step-number {
    border-color: rgba(255, 255, 255, 0.3);
}

.step-number {
    flex-shrink: 0;
    width: 34px;
    height: 34px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: border-color 0.25s ease;
}

.step-number {
    transition: all var(--transition-bounce);
}

/* === 公告列表项入场 === */
.announcement-item {
    animation: scaleIn 0.5s cubic-bezier(0.25, 0.1, 0.25, 1) both;
}

.announcement-item:nth-child(1) { animation-delay: 0.05s; }
.announcement-item:nth-child(2) { animation-delay: 0.1s; }
.announcement-item:nth-child(3) { animation-delay: 0.15s; }
.announcement-item:nth-child(4) { animation-delay: 0.2s; }
.announcement-item:nth-child(5) { animation-delay: 0.25s; }

/* === 复制按钮涟漪增强 === */
.copy-btn:not(:disabled) {
    overflow: hidden;
}

/* === 导航链接悬停下划线优化 === */
.nav-links a::after {
    transform-origin: center;
}

/* === 粒子容器增强 === */
.hero-particles {
    opacity: 0.2;
}

/* === 响应式 === */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.6rem;
    }

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

    .copy-row {
        flex-wrap: wrap;
        justify-content: center;
        padding: 10px 12px;
    }

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

    .nav-links {
        gap: 16px;
    }

    .status-card {
        padding: 20px;
        border-radius: var(--radius-lg);
    }

    .section-title {
        font-size: 1.6rem;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .step {
        padding: 12px 14px;
    }
}

/* === 兑换码模态框 === */
.rd-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2600;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.rd-overlay.show {
    opacity: 1;
    visibility: visible;
}

.rd-modal {
    background: #1c1c1e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: 32px;
    max-width: 400px;
    width: 100%;
    position: relative;
    transform: scale(0.92) translateY(20px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.3s ease;
}

.rd-overlay.show .rd-modal {
    transform: scale(1) translateY(0);
    opacity: 1;
}

.rd-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition);
}

.rd-close:hover {
    color: var(--text-primary);
}

.rd-title {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.4px;
    margin-bottom: 4px;
}

.rd-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.rd-field {
    margin-bottom: 12px;
}

.rd-input {
    width: 100%;
    padding: 11px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.rd-input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.rd-input::placeholder {
    color: var(--text-tertiary);
}

.rd-msg {
    font-size: 0.82rem;
    min-height: 22px;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.5);
}

.rd-msg.error {
    color: rgba(255, 120, 120, 0.7);
}

.rd-msg.success {
    color: rgba(120, 255, 120, 0.7);
}

.rd-btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.rd-btn:hover {
    background: rgba(255, 255, 255, 0.16);
}

.rd-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ============================================
   翻页动画 · 3D 真翻页效果
   ============================================ */

/* 3D 翻页入场：页面从上方翻下，带透视和光影 */
@keyframes pageFlip3D {
    0% {
        transform: perspective(1400px) rotateX(-15deg) scale(0.95);
        opacity: 0;
        transform-origin: top center;
    }
    40% {
        transform: perspective(1400px) rotateX(2deg) scale(0.98);
        opacity: 1;
    }
    70% {
        transform: perspective(1400px) rotateX(-0.5deg) scale(0.995);
    }
    100% {
        transform: perspective(1400px) rotateX(0deg) scale(1);
        opacity: 1;
        transform-origin: top center;
    }
}

.page-enter {
    animation: pageFlip3D 0.9s var(--ease-out-expo) forwards;
    position: relative;
}

/* 小屏：翻页更快 */
@media (max-width: 768px) {
    .page-enter {
        animation-duration: 0.6s;
    }
    .page-enter::before {
        animation-duration: 0.6s;
    }
}

/* 大屏：翻页更舒缓 */
@media (min-width: 1400px) {
    .page-enter {
        animation-duration: 1.1s;
    }
    .page-enter::before {
        animation-duration: 1.1s;
    }
}

.page-enter::before {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(255, 255, 255, 0.06) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 0, 0, 0.15) 100%
    );
    pointer-events: none;
    z-index: 9999;
    animation: pageGlide 0.9s var(--ease-out-expo) forwards;
}

@keyframes pageGlide {
    0% { opacity: 1; }
    60% { opacity: 1; }
    100% { opacity: 0; }
}

/* 翻出动画：页面向上翻走 */
@keyframes pageFlipOut {
    0% {
        clip-path: inset(0 0 0 0);
        -webkit-clip-path: inset(0 0 0 0);
    }
    100% {
        clip-path: inset(0 0 100% 0);
        -webkit-clip-path: inset(0 0 100% 0);
    }
}

.page-exit {
    animation: pageFlipOut 0.5s var(--ease-in-out) forwards;
}

/* === Hero 探索更多入口 === */
.hero-explore {
    margin-top: 48px;
    text-align: center;
}

.explore-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.explore-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.08);
    opacity: 0;
    transition: opacity var(--transition);
}

.explore-btn:hover {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.explore-btn:hover::before {
    opacity: 1;
}

.explore-btn:active {
    transform: translateY(0) scale(0.97);
}

.explore-text {
    position: relative;
    z-index: 1;
}

.explore-arrow {
    position: relative;
    z-index: 1;
    display: inline-flex;
    transition: transform var(--transition-bounce);
}

.explore-btn:hover .explore-arrow {
    transform: translateY(4px);
}

/* 箭头持续跳动动画 */
.explore-arrow {
    animation: exploreBounce 1.8s ease-in-out infinite;
}

@keyframes exploreBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(6px);
    }
}

.explore-btn:hover .explore-arrow {
    animation: none;
    transform: translateY(4px);
}

/* 按钮呼吸动画 */
@keyframes explorePulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.05);
    }
    50% {
        box-shadow: 0 0 20px 4px rgba(255, 255, 255, 0.08);
    }
}

.explore-btn {
    animation: explorePulse 3s ease-in-out infinite;
}

/* ============================================
   卡片 3D 倾转效果
   ============================================ */

.tilt-card {
    position: relative;
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.3s var(--ease-out-expo);
}

.tilt-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at var(--tilt-x, 50%) var(--tilt-y, 50%),
        rgba(255, 255, 255, 0.06) 0%,
        transparent 60%
    );
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s var(--ease-out-expo);
}

.tilt-card:hover::after {
    opacity: 1;
}

/* ============================================
   反顾页 · 时光印记
   ============================================ */

.review-hero {
    position: relative;
    min-height: 62vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--gradient-hero);
    padding: 140px 20px 60px;
    overflow: hidden;
}

.review-hero .container { max-width: 720px; }

.review-badge {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: 100px;
    padding: 8px 18px;
    font-size: 0.78rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.review-title {
    margin: 26px 0 14px;
    font-size: clamp(3rem, 9vw, 5.5rem);
    font-weight: 800;
    letter-spacing: 6px;
    color: var(--text-primary);
}

.review-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* 简介卡片 */
.review-intro { padding: 0 0 20px; }

.intro-card {
    max-width: 640px;
    margin: 0 auto;
    padding: 30px 32px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-glass);
    text-align: center;
}

.intro-text {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--text-secondary);
}

.intro-text + .intro-text { margin-top: 12px; }

.intro-sub {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* 时间轴 */
.timeline-section { padding: 60px 0 30px; }

.timeline-section .section-title {
    text-align: center;
    margin-bottom: 52px;
}

.timeline {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent, var(--border-hover) 6%, var(--border-hover) 94%, transparent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 34px 46px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-primary);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.06), 0 0 12px rgba(255, 255, 255, 0.45);
}

.timeline-item:nth-child(odd) .timeline-dot { right: -5px; }
.timeline-item:nth-child(even) .timeline-dot { left: -5px; }

.timeline-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.timeline-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.timeline-tag {
    display: inline-block;
    font-size: 0.68rem;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.timeline-card h3 {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.timeline-card p {
    font-size: 0.84rem;
    line-height: 1.75;
    color: var(--text-secondary);
}

.timeline-card-future { border-style: dashed; }

.timeline-cta {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.82rem;
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
    padding: 6px 16px;
    border-radius: 100px;
    text-decoration: none;
    transition: all var(--transition);
}

.timeline-cta:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* 初心寄语 */
.review-motto {
    padding: 40px 0 90px;
    text-align: center;
}

.motto-text {
    max-width: 620px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 2.1;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

/* 反顾页响应式 */
@media (max-width: 768px) {
    .timeline::before { left: 0; }

    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        width: 100%;
        left: 0;
        padding: 0 0 34px 30px;
        text-align: left;
    }

    .timeline-item:nth-child(odd) .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: -5px;
        right: auto;
    }
}

/* ============================================
   动画性能优化
   ============================================ */

/* 倾转卡片：mousemove 拖动期间禁用过渡（由 JS 切换类），复位时再启用实现平滑回弹 */
.tilt-card.tilt-active {
    transition: none;
}

/* 页面切后台时暂停装饰性无限动画（粒子等），降低性能损耗 */
body.particles-paused .hero-particles *,
body.particles-paused .explore-arrow {
    animation-play-state: paused !important;
}

/* 用户系统开启"减少动态效果"时，关闭装饰动画并压缩入场时间 */
@media (prefers-reduced-motion: reduce) {
    .hero-particles *,
    .explore-arrow,
    .status-badge.online .dot,
    .announcement-item,
    .skeleton {
        animation: none !important;
    }

    .page-enter,
    .page-enter::before {
        animation-duration: 0.01s !important;
    }

    .reveal,
    .reveal-scale,
    .reveal-right,
    .reveal-blur,
    .reveal-bounce {
        transition-duration: 0.01s !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ============================================
   反顾墙 · 问题反顾 / 建议 / 评价
   ============================================ */

.rv-wall { padding: 10px 0 30px; }

.rv-wall .container { max-width: 720px; }

/* 发表区 */
.rv-composer {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 26px 28px;
}

.rv-tip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 10px 0;
}

.rv-tip-text {
    font-size: 0.92rem;
    color: var(--text-secondary);
}

/* 通用按钮 */
.rv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 100px;
    font-size: 0.84rem;
    font-family: inherit;
    letter-spacing: 0.3px;
    cursor: pointer;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    transition: all var(--transition);
    white-space: nowrap;
}

.rv-btn-primary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

.rv-btn-primary:hover {
    background: rgba(255, 255, 255, 0.17);
}

.rv-btn-ghost {
    border-color: var(--border-color);
}

.rv-btn-ghost:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.rv-btn-sm {
    padding: 6px 14px;
    font-size: 0.78rem;
}

.rv-form-top {
    margin-bottom: 14px;
}

.rv-form-who {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.rv-form-who b {
    color: var(--text-primary);
    font-weight: 600;
}

/* 类型选择 */
.rv-type-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.rv-type-btn {
    padding: 7px 18px;
    border-radius: 100px;
    font-size: 0.82rem;
    font-family: inherit;
    cursor: pointer;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.rv-type-btn:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.rv-type-btn.active {
    background: var(--text-primary);
    color: #000;
    border-color: var(--text-primary);
    font-weight: 600;
}

/* 内容输入 */
.rv-textarea {
    width: 100%;
    min-height: 96px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    line-height: 1.7;
    resize: vertical;
    outline: none;
    box-sizing: border-box;
    transition: border-color var(--transition);
}

.rv-textarea:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.rv-textarea::placeholder {
    color: var(--text-tertiary);
}

.rv-form-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
}

.rv-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.rv-form-msg {
    min-height: 18px;
    margin-top: 8px;
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.rv-form-msg.error {
    color: rgba(255, 150, 150, 0.9);
}

/* 列表区 */
.rv-list-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin: 44px 0 18px;
}

.rv-list-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin: 0;
}

.rv-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.rv-loading,
.rv-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.88rem;
    padding: 48px 0;
}

/* 反顾条目 */
.rv-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    transition: border-color var(--transition), background var(--transition);
}

.rv-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.rv-item-head {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.rv-tag {
    padding: 3px 11px;
    border-radius: 100px;
    font-size: 0.7rem;
    letter-spacing: 1px;
    border: 1px solid;
    line-height: 1.6;
}

.rv-tag[data-type="问题反顾"] {
    color: rgba(255, 158, 158, 0.95);
    border-color: rgba(255, 158, 158, 0.28);
    background: rgba(255, 158, 158, 0.06);
}

.rv-tag[data-type="建议"] {
    color: rgba(150, 205, 255, 0.95);
    border-color: rgba(150, 205, 255, 0.28);
    background: rgba(150, 205, 255, 0.06);
}

.rv-tag[data-type="评价"] {
    color: rgba(150, 230, 180, 0.95);
    border-color: rgba(150, 230, 180, 0.28);
    background: rgba(150, 230, 180, 0.06);
}

.rv-author {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-primary);
}

.rv-time {
    margin-left: auto;
    font-size: 0.73rem;
    color: var(--text-tertiary);
}

.rv-del {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.75rem;
    color: rgba(255, 150, 150, 0.55);
    padding: 2px 6px;
    border-radius: 6px;
    font-family: inherit;
    transition: color var(--transition);
}

.rv-del:hover {
    color: rgba(255, 120, 120, 1);
}

.rv-content {
    margin: 12px 0 4px;
    font-size: 0.92rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.82);
    white-space: pre-wrap;
    word-break: break-word;
}

/* 操作行 */
.rv-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
}

.rv-like-btn,
.rv-cmt-toggle {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-family: inherit;
    cursor: pointer;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}

.rv-like-btn svg,
.rv-cmt-toggle svg {
    flex-shrink: 0;
}

.rv-like-btn:hover,
.rv-cmt-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.rv-like-btn.liked {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.08);
}

.rv-cmt-toggle.open {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

/* 评价区 */
.rv-comments {
    display: none;
    margin-top: 14px;
    padding-top: 4px;
}

.rv-comments.open {
    display: block;
    animation: fadeInUp 0.3s ease both;
}

.rv-comment {
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-color);
}

.rv-comment:first-child {
    border-top: 1px dashed var(--border-color);
}

.rv-cmt-head {
    display: flex;
    align-items: center;
    gap: 8px;
}

.rv-cmt-author {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-primary);
}

.rv-cmt-time {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

.rv-del-sm {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.72rem;
    color: rgba(255, 150, 150, 0.5);
    padding: 2px 6px;
    border-radius: 6px;
    font-family: inherit;
    transition: color var(--transition);
}

.rv-del-sm:hover {
    color: rgba(255, 120, 120, 1);
}

.rv-cmt-content {
    margin-top: 5px;
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.72);
    white-space: pre-wrap;
    word-break: break-word;
}

.rv-cmt-form {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.rv-cmt-input {
    flex: 1;
    min-width: 0;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-primary);
    font-size: 0.82rem;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}

.rv-cmt-input:focus {
    border-color: rgba(255, 255, 255, 0.3);
}

.rv-cmt-input::placeholder {
    color: var(--text-tertiary);
}

.rv-cmt-login {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

@media (max-width: 480px) {
    .rv-composer {
        padding: 20px 16px;
    }
    .rv-time {
        margin-left: 0;
        width: 100%;
        order: 5;
    }
    .rv-cmt-form {
        flex-wrap: wrap;
    }
    .rv-cmt-input {
        width: 100%;
        flex: auto;
    }
}

/* ============================================
   Wiki 文档站（分组 → 页面 → 章节）
   ============================================ */

/* ---- 深 / 浅色主题变量（由文档页的 html[data-wiki-theme] 切换） ---- */
html[data-wiki-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f6f7;
    --bg-card: rgba(0, 0, 0, 0.025);
    --bg-card-hover: rgba(0, 0, 0, 0.055);
    --bg-glass: rgba(0, 0, 0, 0.03);
    --border-color: rgba(0, 0, 0, 0.1);
    --border-hover: rgba(0, 0, 0, 0.24);
    --text-primary: #0b0b0c;
    --text-secondary: rgba(11, 11, 12, 0.66);
    --text-tertiary: rgba(11, 11, 12, 0.42);
    --gradient-hero: linear-gradient(180deg, #ffffff 0%, #f7f7f8 50%, #f1f1f3 100%);
    --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.07);
    --shadow-card-hover: 0 12px 60px rgba(0, 0, 0, 0.1);
}

html[data-wiki-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.85);
    border-bottom-color: rgba(0, 0, 0, 0.07);
}
html[data-wiki-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}
html[data-wiki-theme="light"] .nav-toggle {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.25);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
}
html[data-wiki-theme="light"] .nav-toggle-bar { background: #0b0b0c; }
html[data-wiki-theme="light"] .nav-links {
    background: rgba(255, 255, 255, 0.97);
    border-left-color: rgba(0, 0, 0, 0.1);
}

/* ---- 文档站落地页 ---- */
.wk-badge {
    display: inline-block;
    padding: 6px 14px;
    border: 1px solid var(--border-hover);
    border-radius: 100px;
    font-size: 0.72rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
}

.wk-hero {
    background: var(--gradient-hero);
    border-bottom: 1px solid var(--border-color);
    padding-top: 148px;
}

.wk-hero .container {
    max-width: 1080px;
    text-align: center;
    padding-bottom: 54px;
}

.wk-hero-title {
    margin: 20px 0 14px;
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    font-weight: 800;
    letter-spacing: 4px;
    color: var(--text-primary);
}

.wk-hero-sub {
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.wk-hero-foot {
    margin-top: 26px;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.wk-body-sec {
    padding: 46px 0 74px;
}

.wk-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.wk-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 20px 8px;
    transition: border-color var(--transition), background var(--transition);
}

.wk-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.wk-card-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.wk-card-title {
    font-size: 1.02rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.wk-card-count {
    flex-shrink: 0;
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.wk-card-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.wk-card-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 2px;
    text-decoration: none;
    border-bottom: 1px dashed var(--border-color);
}

.wk-card-list li:last-child .wk-card-link { border-bottom: none; }

.wk-card-link-title {
    flex: 1 1 auto;
    font-size: 0.87rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}

.wk-card-link-meta {
    flex-shrink: 0;
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.wk-card-arrow {
    flex-shrink: 0;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    transition: transform var(--transition), color var(--transition);
}

.wk-card-link:hover .wk-card-link-title { color: var(--text-primary); }
.wk-card-link:hover .wk-card-arrow { color: var(--text-primary); transform: translateX(3px); }

/* ---- 搜索 ---- */
.wk-search {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.wk-search-hero {
    max-width: 540px;
    margin: 30px auto 0;
    padding: 11px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    transition: border-color var(--transition), background var(--transition);
}

.wk-search-hero:focus-within {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.wk-search-icon {
    display: inline-flex;
    flex-shrink: 0;
    color: var(--text-tertiary);
}

.wk-search-input {
    flex: 1 1 auto;
    min-width: 0;
    background: none;
    border: none;
    outline: none;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.wk-search-input::placeholder { color: var(--text-tertiary); }
.wk-search-input::-webkit-search-cancel-button { filter: grayscale(1); opacity: 0.5; }

.wk-search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    z-index: 60;
    max-height: 380px;
    overflow-y: auto;
    text-align: left;
    background: var(--bg-secondary);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card-hover);
}

.wk-search-item {
    display: block;
    padding: 10px 14px;
    text-decoration: none;
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition);
}

.wk-search-item:last-child { border-bottom: none; }
.wk-search-item:hover,
.wk-search-item.active { background: var(--bg-card-hover); }

.wk-search-item-title {
    display: block;
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-primary);
}

.wk-search-item-path {
    display: block;
    margin-top: 2px;
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.wk-search-item-snippet {
    display: block;
    margin-top: 4px;
    font-size: 0.76rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.wk-search-item mark {
    background: rgba(255, 208, 82, 0.3);
    color: inherit;
    padding: 0 2px;
    border-radius: 3px;
}

.wk-search-empty {
    padding: 16px 14px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

/* ---- 正文行（由 app.py 服务端渲染） ---- */
.doc-line {
    font-size: 0.94rem;
    line-height: 1.9;
    color: var(--text-secondary);
    word-break: break-word;
    margin-bottom: 12px;
}

.doc-line:last-child { margin-bottom: 0; }

.doc-line-cmd {
    margin-bottom: 9px;
}

.doc-code {
    display: inline-block;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-left: 2px solid var(--border-hover);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 8px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.86rem;
    line-height: 1.6;
    word-break: break-all;
}

.doc-link {
    color: rgba(150, 205, 255, 0.95);
    text-decoration: underline;
    text-underline-offset: 3px;
    word-break: break-all;
    transition: color var(--transition);
}

.doc-link:hover {
    color: rgba(190, 225, 255, 1);
}

html[data-wiki-theme="light"] .doc-link { color: #1f6feb; }
html[data-wiki-theme="light"] .doc-link:hover { color: #1657bd; }

.doc-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    padding: 50px 0;
}

.wk-empty {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    padding: 60px 0;
}

/* ============================================
   文档管理（后台）
   ============================================ */

.admin-btn-sm.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.admin-doc-sec-box {
    max-width: 560px;
}

.admin-doc-sec-box .admin-textarea {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.82rem;
    line-height: 1.7;
}

/* ============================================
   文档内容页：左侧树形侧栏 + 正文 + 右侧本页目录
   ============================================ */

.wk-shell {
    display: flex;
    align-items: flex-start;
    gap: 38px;
    max-width: 1400px;
    padding-top: 88px;
    padding-bottom: 76px;
}

/* ---- 左侧树形侧栏 ---- */
.wk-side {
    flex: 0 0 264px;
    width: 264px;
    position: sticky;
    top: 68px;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.wk-side-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.wk-side-brand {
    font-size: 0.98rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    text-decoration: none;
}

.wk-side-tag {
    flex-shrink: 0;
    font-size: 0.68rem;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    padding: 2px 8px;
}

.wk-side-close {
    display: none;
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    font-family: inherit;
}

.wk-search-side {
    margin-bottom: 14px;
    padding: 7px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: border-color var(--transition);
}

.wk-search-side:focus-within { border-color: var(--border-hover); }
.wk-search-side .wk-search-input { font-size: 0.84rem; }
.wk-search-side .wk-search-results { left: 0; right: auto; width: min(360px, 78vw); }

.wk-tree { padding-bottom: 10px; }

.wk-tree-group { margin-bottom: 2px; }

.wk-tree-group-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 7px 8px;
    background: none;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: background var(--transition);
}

.wk-tree-group-btn:hover { background: var(--bg-card-hover); }

.wk-caret {
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    opacity: 0.6;
    transition: transform 0.25s var(--ease-out-expo);
}

.wk-tree-group.open .wk-caret { transform: rotate(45deg); }

.wk-tree-group-name {
    flex: 1 1 auto;
    min-width: 0;
}

.wk-tree-pages {
    list-style: none;
    margin: 2px 0 8px;
    padding: 0 0 0 14px;
    border-left: 1px solid var(--border-color);
    display: none;
}

.wk-tree-group.open .wk-tree-pages { display: block; }

.wk-tree-link {
    display: block;
    padding: 6px 10px;
    margin-left: -1px;
    font-size: 0.82rem;
    line-height: 1.5;
    color: var(--text-secondary);
    text-decoration: none;
    border-left: 2px solid transparent;
    border-radius: 0 8px 8px 0;
    transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.wk-tree-link:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.wk-tree-link.active {
    color: var(--text-primary);
    background: var(--bg-card-hover);
    border-left-color: var(--text-primary);
    font-weight: 600;
}

/* ---- 中间正文 ---- */
.wk-main {
    flex: 1 1 auto;
    min-width: 0;
}

.wk-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 14px;
    margin-bottom: 26px;
    border-bottom: 1px solid var(--border-color);
}

.wk-crumb {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.wk-crumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.wk-crumb a:hover { color: var(--text-primary); }
.wk-crumb-sep { margin: 0 6px; opacity: 0.6; }
.wk-crumb-cur { color: var(--text-secondary); }

.wk-theme-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.wk-theme-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-card);
}

.wk-side-toggle {
    display: none;
    align-items: center;
    gap: 7px;
    flex-shrink: 0;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    background: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
}

.wk-side-toggle-bars {
    display: inline-flex;
    flex-direction: column;
    gap: 3px;
}

.wk-side-toggle-bars i {
    display: block;
    width: 13px;
    height: 1.6px;
    background: currentColor;
    border-radius: 2px;
}

.wk-article-title {
    font-size: clamp(1.6rem, 4vw, 2.1rem);
    font-weight: 800;
    letter-spacing: 1px;
    line-height: 1.35;
    color: var(--text-primary);
}

.wk-article-meta {
    margin-top: 10px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.wk-section {
    padding-top: 34px;
    scroll-margin-top: 76px;
}

.wk-section-title {
    font-size: 1.14rem;
    font-weight: 700;
    letter-spacing: 0.6px;
    color: var(--text-primary);
    padding-left: 12px;
    border-left: 3px solid var(--text-primary);
    line-height: 1.4;
    margin-bottom: 16px;
}

.wk-section-body .doc-figure { margin: 14px 0; }

/* ---- 上/下篇 ---- */
.wk-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 52px;
    padding-top: 26px;
    border-top: 1px solid var(--border-color);
}

.wk-pager-link {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    background: var(--bg-card);
    transition: border-color var(--transition), background var(--transition);
}

.wk-pager-link:not(.wk-pager-empty):hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.wk-pager-empty {
    border: none;
    background: none;
    padding: 0;
}

.wk-pager-next { text-align: right; }

.wk-pager-dir {
    font-size: 0.72rem;
    letter-spacing: 1px;
    color: var(--text-tertiary);
}

.wk-pager-title {
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-primary);
}

/* ---- 右侧本页目录 ---- */
.wk-toc {
    flex: 0 0 196px;
    width: 196px;
    position: sticky;
    top: 68px;
    max-height: calc(100vh - 88px);
    overflow-y: auto;
    overscroll-behavior: contain;
}

/* ---- Wiki 侧栏（左侧文档树 / 右侧本页目录）：隐藏滚动条，保留滚动能力 ---- */
.wk-side,
.wk-toc {
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.wk-side::-webkit-scrollbar,
.wk-toc::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.wk-toc-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-tertiary);
    padding-bottom: 10px;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.wk-toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.wk-toc-link {
    display: block;
    padding: 5px 10px;
    font-size: 0.79rem;
    line-height: 1.5;
    color: var(--text-tertiary);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.wk-toc-link:hover { color: var(--text-primary); }

.wk-toc-link.active {
    color: var(--text-primary);
    border-left-color: var(--text-primary);
    font-weight: 600;
}

/* ---- 窄屏遮罩（侧栏抽屉） ---- */
.wk-scrim {
    position: fixed;
    inset: 0;
    z-index: 1199;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
}

.wk-scrim.show { opacity: 1; visibility: visible; }

/* ---- 指令行可点击复制 ---- */
.doc-code {
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
    user-select: all;
    -webkit-user-select: all;
}

.doc-code:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    border-left-color: var(--text-primary);
}

/* ---- 响应式：收起右侧目录 / 侧栏转抽屉 ---- */
@media (max-width: 1180px) {
    .wk-toc { display: none; }
    .wk-shell { max-width: 1020px; }
}

@media (max-width: 900px) {
    .wk-shell {
        flex-direction: column;
        gap: 20px;
        padding-top: 76px;
    }
    .wk-side-toggle { display: inline-flex; }

    .wk-side {
        position: fixed;
        top: 0;
        left: 0;
        z-index: 1200;
        width: min(84vw, 330px);
        height: 100vh;
        height: 100dvh;
        max-height: none;
        flex: none;
        padding: 66px 16px 28px;
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-hover);
        box-shadow: 20px 0 60px rgba(0, 0, 0, 0.55);
        transform: translateX(-105%);
        transition: transform 0.38s var(--ease-out-expo);
        overflow-y: auto;
    }

    .wk-side.open { transform: translateX(0); }
    .wk-side-close { display: inline-flex; align-items: center; justify-content: center; }
    .wk-side .wk-tree-pages { display: block; }
    body.wk-lock { overflow: hidden; }
}

@media (max-width: 640px) {
    .wk-cards { grid-template-columns: 1fr; }
    .wk-pager { grid-template-columns: 1fr; }
    .wk-pager-next { text-align: left; }
    .wk-pager-empty { display: none; }
    .wk-hero { padding-top: 122px; }
    .wk-hero .container { padding-bottom: 40px; }
}

/* ============================================
   文档内容图片（![说明](图片URL) 渲染）
   ============================================ */

.doc-figure {
    margin: 0;
}
.doc-figure .doc-img {
    display: block;
    width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
}
.doc-figure-cap {
    margin-top: 7px;
    font-size: 0.74rem;
    line-height: 1.5;
    color: var(--text-tertiary);
    text-align: center;
    word-break: break-word;
}

/* ============================================
   移动端导航：汉堡按钮 + 右侧抽屉
   ============================================ */

.nav-toggle {
    display: none;
    position: relative;
    z-index: 1301;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    width: 42px;
    height: 42px;
    padding: 6px;
    border: 1px solid rgba(255, 255, 255, 0.38);
    border-radius: 12px;
    /* 黑底白条：在任何页面背景上都清晰，靠白描边 + 白色光晕突出 */
    background: #000000;
    cursor: pointer;
    font-family: inherit;
    box-shadow: 0 4px 18px rgba(255, 255, 255, 0.18);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.nav-toggle:hover {
    border-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0 6px 26px rgba(255, 255, 255, 0.32);
}
.nav-toggle:active {
    transform: scale(0.94);
}
.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: #ffffff;
    transition: transform 0.3s var(--ease-out-expo), opacity 0.2s ease;
}
.nav-toggle.open .nav-toggle-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.open .nav-toggle-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-scrim {
    position: fixed;
    inset: 0;
    /* 必须低于 .navbar(100)，否则遮罩会盖住导航栏内的抽屉与汉堡按钮 */
    z-index: 99;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
}
.nav-scrim.show {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 768px) {
    body.nav-lock {
        overflow: hidden;
    }
    .navbar .container {
        position: relative;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        z-index: 1200;
        /* .navbar 的 backdrop-filter 会使其成为 fixed 子元素的包含块，
           故 top/bottom 无法撑满视口，这里改用显式视口高度 */
        height: 100vh;
        height: 100dvh;
        width: min(80vw, 320px);
        margin: 0;
        padding: 68px 16px 28px;
        flex-direction: column;
        gap: 4px;
        background: rgba(8, 8, 10, 0.96);
        -webkit-backdrop-filter: blur(28px) saturate(1.2);
        backdrop-filter: blur(28px) saturate(1.2);
        border-left: 1px solid var(--border-hover);
        box-shadow: -20px 0 60px rgba(0, 0, 0, 0.6);
        transform: translateX(105%);
        transition: transform 0.38s var(--ease-out-expo);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    .nav-links.open {
        transform: translateX(0);
    }
    .nav-links li {
        width: 100%;
    }
    .nav-links a {
        display: block;
        width: 100%;
        padding: 13px 14px;
        border-radius: 12px;
        font-size: 0.98rem;
        font-weight: 500;
        line-height: 1.4;
    }
    .nav-links a::after {
        display: none;
    }
    .nav-links a:hover,
    .nav-links a.active {
        color: var(--text-primary);
        background: rgba(255, 255, 255, 0.08);
    }
}

/* ============================================
   窄屏通用可读性优化
   ============================================ */

@media (max-width: 480px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .nav-brand .logo {
        font-size: 1rem;
        white-space: nowrap;
    }
    .doc-line {
        font-size: 0.92rem;
    }
    .wk-card {
        padding: 16px 16px 6px;
    }
    .wk-section-title {
        font-size: 1.06rem;
    }
    .hero-subtitle {
        letter-spacing: 2px;
    }
}

/* ============================================
   屏幕阅读器专用（视觉隐藏，服务 SEO / 无障碍）
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}