/* ============================================
   一起草 - 户外运动社交平台
   CSS前缀: yc-
   配色: 翠绿 #34D399 / 天蓝 #60A5FA / 阳光黄 #FBBF24
   ============================================ */

/* === CSS Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #1F2937;
    background-color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

/* === 动画关键帧 === */
@keyframes yc-fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes yc-slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes yc-slideOutLeft {
    from { transform: translateX(0); }
    to { transform: translateX(-100%); }
}

@keyframes yc-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* === 导航栏 === */
.yc-header {
    background: linear-gradient(135deg, #34D399, #2BC48A);
    padding: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.yc-nav-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
}

.yc-logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}

.yc-logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.yc-logo-text {
    color: #FFFFFF;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.yc-nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}

.yc-nav-item {
    position: relative;
}

.yc-nav-link {
    color: #FFFFFF;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: block;
    white-space: nowrap;
}

.yc-nav-link:hover {
    color: #FBBF24;
    background: rgba(255,255,255,0.1);
}

.yc-nav-link.yc-active {
    color: #FBBF24;
    border-bottom: 2px solid #FBBF24;
}

/* 汉堡菜单 */
.yc-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

.yc-hamburger span {
    display: block;
    width: 26px;
    height: 3px;
    background: #FFFFFF;
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 移动端侧边栏 */
.yc-mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.yc-mobile-overlay.yc-show {
    opacity: 1;
}

.yc-mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background: linear-gradient(180deg, #34D399, #2BC48A);
    z-index: 9999;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    padding: 20px;
    overflow-y: auto;
}

.yc-mobile-nav.yc-open {
    transform: translateX(0);
}

.yc-mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    margin-bottom: 20px;
}

.yc-mobile-close {
    background: none;
    border: none;
    color: #FFFFFF;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.yc-mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.yc-mobile-nav-link {
    color: #FFFFFF;
    font-size: 1.05rem;
    padding: 12px 16px;
    border-radius: 8px;
    display: block;
    transition: all 0.3s ease;
}

.yc-mobile-nav-link:hover,
.yc-mobile-nav-link.yc-active {
    background: rgba(255,255,255,0.15);
    color: #FBBF24;
}

/* === Hero Banner === */
.yc-hero {
    position: relative;
    width: 100%;
    min-height: 500px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.yc-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.yc-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(52,211,153,0.7), rgba(96,165,250,0.5));
    z-index: 2;
}

.yc-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: #FFFFFF;
    padding: 40px 20px;
    animation: yc-fadeIn 0.8s ease;
}

.yc-hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.yc-hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.yc-hero-btn {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #FBBF24, #F59E0B);
    color: #1F2937;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(251,191,36,0.4);
}

.yc-hero-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(251,191,36,0.6);
}

/* === 通用容器 === */
.yc-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === 通用模块标题 === */
.yc-section {
    padding: 60px 0;
}

.yc-section:nth-child(even) {
    background: #F9FAFB;
}

.yc-section-header {
    text-align: center;
    margin-bottom: 40px;
}

.yc-section-title {
    font-size: 2rem;
    color: #1F2937;
    margin-bottom: 12px;
}

.yc-section-subtitle {
    font-size: 1rem;
    color: #6B7280;
    max-width: 600px;
    margin: 0 auto;
}

/* === 卡片网格 === */
.yc-grid {
    display: grid;
    gap: 24px;
}

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

.yc-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.yc-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* === 通用卡片 === */
.yc-card {
    background: #FFFFFF;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    animation: yc-fadeIn 0.6s ease;
}

.yc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.yc-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.yc-card-body {
    padding: 20px;
}

.yc-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1F2937;
}

.yc-card-text {
    font-size: 0.9rem;
    color: #6B7280;
    line-height: 1.6;
    margin-bottom: 12px;
}

.yc-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: #9CA3AF;
}

/* === 约战卡片 === */
.yc-match-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    border-left: 4px solid #34D399;
    transition: all 0.3s ease;
}

.yc-match-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.yc-match-type {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #34D399, #60A5FA);
    color: #FFFFFF;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 10px;
}

.yc-match-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.yc-match-info {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: #6B7280;
}

.yc-match-info span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.yc-match-progress {
    width: 100%;
    height: 8px;
    background: #E5E7EB;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.yc-match-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #34D399, #60A5FA);
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* === 按钮 === */
.yc-btn {
    display: inline-block;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.yc-btn:hover {
    transform: scale(1.03);
}

.yc-btn-primary {
    background: linear-gradient(135deg, #34D399, #2BC48A);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(52,211,153,0.3);
}

.yc-btn-primary:hover {
    box-shadow: 0 6px 18px rgba(52,211,153,0.5);
}

.yc-btn-secondary {
    background: linear-gradient(135deg, #60A5FA, #3B82F6);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(96,165,250,0.3);
}

.yc-btn-yellow {
    background: linear-gradient(135deg, #FBBF24, #F59E0B);
    color: #1F2937;
    box-shadow: 0 4px 12px rgba(251,191,36,0.3);
}

.yc-btn-outline {
    background: transparent;
    border: 2px solid #34D399;
    color: #34D399;
}

.yc-btn-outline:hover {
    background: #34D399;
    color: #FFFFFF;
}

/* === 达人卡片 === */
.yc-influencer-card {
    text-align: center;
    padding: 30px 20px;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.yc-influencer-card:hover {
    transform: translateY(-4px);
}

.yc-influencer-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 12px;
    border: 3px solid #34D399;
}

.yc-influencer-name {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.yc-influencer-sport {
    font-size: 0.85rem;
    color: #6B7280;
    margin-bottom: 8px;
}

.yc-influencer-fans {
    font-size: 0.8rem;
    color: #34D399;
    font-weight: 600;
}

/* === 轮播 === */
.yc-carousel {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.yc-carousel-track {
    display: flex;
    transition: transform 0.5s ease;
}

.yc-carousel-slide {
    min-width: 100%;
    position: relative;
}

.yc-carousel-slide img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.yc-carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #FFFFFF;
}

.yc-carousel-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 16px;
}

.yc-carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #D1D5DB;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.yc-carousel-dot.yc-active {
    background: #34D399;
    transform: scale(1.2);
}

/* === 排行榜 === */
.yc-leaderboard {
    background: #FFFFFF;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.yc-leaderboard-row {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid #F3F4F6;
    transition: background 0.3s ease;
}

.yc-leaderboard-row:hover {
    background: #F9FAFB;
}

.yc-leaderboard-rank {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50%;
    margin-right: 16px;
    flex-shrink: 0;
}

.yc-rank-1 { background: #FBBF24; color: #FFFFFF; }
.yc-rank-2 { background: #9CA3AF; color: #FFFFFF; }
.yc-rank-3 { background: #CD7F32; color: #FFFFFF; }
.yc-rank-default { background: #F3F4F6; color: #6B7280; }

.yc-leaderboard-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 12px;
    flex-shrink: 0;
}

.yc-leaderboard-info {
    flex: 1;
}

.yc-leaderboard-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.yc-leaderboard-score {
    font-size: 0.85rem;
    color: #34D399;
    font-weight: 700;
}

/* === 表单 === */
.yc-form-group {
    margin-bottom: 20px;
}

.yc-form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1F2937;
    font-size: 0.95rem;
}

.yc-form-input,
.yc-form-select,
.yc-form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #E5E7EB;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    color: #1F2937;
    background: #FFFFFF;
    transition: border-color 0.3s ease;
}

.yc-form-input:focus,
.yc-form-select:focus,
.yc-form-textarea:focus {
    outline: none;
    border-color: #34D399;
    box-shadow: 0 0 0 3px rgba(52,211,153,0.15);
}

.yc-form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* === 页脚 === */
.yc-footer {
    background: #1F2937;
    color: #D1D5DB;
    padding: 60px 0 0;
}

.yc-footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 40px;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

.yc-footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    margin-bottom: 12px;
}

.yc-footer-slogan {
    font-size: 0.9rem;
    margin-bottom: 16px;
    color: #9CA3AF;
}

.yc-footer-social {
    display: flex;
    gap: 12px;
}

.yc-footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: #D1D5DB;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.yc-footer-social a:hover {
    background: #34D399;
    color: #FFFFFF;
}

.yc-footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 16px;
}

.yc-footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.yc-footer-links a {
    color: #9CA3AF;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.yc-footer-links a:hover {
    color: #34D399;
}

.yc-footer-partners {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.yc-footer-partner-logo {
    height: 32px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.yc-footer-partner-logo:hover {
    opacity: 1;
}

.yc-footer-award {
    text-align: center;
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.yc-footer-award img {
    height: 60px;
    margin: 0 auto 8px;
}

.yc-footer-award-text {
    font-size: 0.85rem;
    color: #FBBF24;
}

.yc-footer-bottom {
    text-align: center;
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.8rem;
    color: #6B7280;
}

.yc-footer-bottom a {
    color: #60A5FA;
    transition: color 0.3s ease;
}

.yc-footer-bottom a:hover {
    color: #34D399;
}

.yc-footer-cert-badge {
    height: 20px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 4px;
}

/* === 栏目页Banner === */
.yc-page-banner {
    position: relative;
    height: 300px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.yc-page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.yc-page-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(52,211,153,0.75), rgba(96,165,250,0.6));
}

.yc-page-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #FFFFFF;
    padding: 20px;
}

.yc-page-banner-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.yc-page-banner-desc {
    font-size: 1rem;
    opacity: 0.9;
}

/* === 文章内容 === */
.yc-article {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.yc-article h2 {
    font-size: 1.6rem;
    margin: 30px 0 16px;
    color: #1F2937;
}

.yc-article h3 {
    font-size: 1.3rem;
    margin: 24px 0 12px;
    color: #374151;
}

.yc-article p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: #4B5563;
}

.yc-article img {
    border-radius: 12px;
    margin: 20px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* === 标签 === */
.yc-tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.8rem;
    border-radius: 4px;
    background: #ECFDF5;
    color: #34D399;
    font-weight: 500;
}

.yc-tag-blue {
    background: #EFF6FF;
    color: #60A5FA;
}

.yc-tag-yellow {
    background: #FFFBEB;
    color: #F59E0B;
}

/* === APP下载页 === */
.yc-app-hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.yc-app-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.yc-app-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(31,41,55,0.85), rgba(52,211,153,0.6));
}

.yc-app-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #FFFFFF;
    padding: 40px 20px;
}

.yc-app-logo {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    margin: 0 auto 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.yc-app-title {
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.yc-app-desc {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto 30px;
}

.yc-app-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.yc-app-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 12px;
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.yc-app-btn:hover {
    background: rgba(255,255,255,0.25);
    transform: scale(1.05);
}

.yc-app-btn-icon {
    font-size: 1.5rem;
}

/* === 面包屑 === */
.yc-breadcrumb {
    padding: 16px 0;
    font-size: 0.85rem;
    color: #6B7280;
}

.yc-breadcrumb a {
    color: #34D399;
}

.yc-breadcrumb a:hover {
    text-decoration: underline;
}

.yc-breadcrumb span {
    margin: 0 8px;
}

/* === 分页 === */
.yc-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 30px 0;
}

.yc-pagination a,
.yc-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.yc-pagination a {
    background: #F3F4F6;
    color: #6B7280;
}

.yc-pagination a:hover {
    background: #34D399;
    color: #FFFFFF;
}

.yc-pagination .yc-page-active {
    background: #34D399;
    color: #FFFFFF;
}

/* === 响应式断点 === */

/* 1440px */
@media (max-width: 1440px) {
    .yc-container {
        max-width: 1200px;
    }
}

/* 1024px */
@media (max-width: 1024px) {
    .yc-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .yc-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .yc-footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .yc-hero-title {
        font-size: 2.2rem;
    }
}

/* 768px */
@media (max-width: 768px) {
    .yc-nav-list {
        display: none;
    }

    .yc-hamburger {
        display: flex;
    }

    .yc-mobile-overlay {
        display: block;
    }

    .yc-grid-2,
    .yc-grid-3,
    .yc-grid-4 {
        grid-template-columns: 1fr;
    }

    .yc-footer-grid {
        grid-template-columns: 1fr;
    }

    .yc-hero {
        min-height: 400px;
    }

    .yc-hero-title {
        font-size: 1.8rem;
    }

    .yc-hero-subtitle {
        font-size: 1rem;
    }

    .yc-section {
        padding: 40px 0;
    }

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

    .yc-page-banner {
        height: 220px;
    }

    .yc-page-banner-title {
        font-size: 1.6rem;
    }

    .yc-carousel-slide img {
        height: 250px;
    }
}

/* 375px */
@media (max-width: 375px) {
    html {
        font-size: 14px;
    }

    .yc-hero-title {
        font-size: 1.5rem;
    }

    .yc-section-title {
        font-size: 1.4rem;
    }

    .yc-card-body {
        padding: 14px;
    }

    .yc-match-info {
        flex-direction: column;
        gap: 6px;
    }

    .yc-app-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* === 辅助类 === */
.yc-text-center { text-align: center; }
.yc-text-green { color: #34D399; }
.yc-text-blue { color: #60A5FA; }
.yc-text-yellow { color: #FBBF24; }
.yc-text-gray { color: #6B7280; }
.yc-mt-20 { margin-top: 20px; }
.yc-mb-20 { margin-bottom: 20px; }
.yc-mt-40 { margin-top: 40px; }
.yc-mb-40 { margin-bottom: 40px; }
.yc-hidden { display: none; }

/* === 社区帖子卡片 === */
.yc-post-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.yc-post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.yc-post-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.yc-post-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.yc-post-author {
    font-weight: 600;
    font-size: 0.95rem;
}

.yc-post-time {
    font-size: 0.8rem;
    color: #9CA3AF;
}

.yc-post-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1F2937;
}

.yc-post-excerpt {
    font-size: 0.9rem;
    color: #6B7280;
    line-height: 1.6;
    margin-bottom: 14px;
}

.yc-post-stats {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: #9CA3AF;
}

/* === 直播卡片 === */
.yc-live-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.yc-live-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.yc-live-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.yc-live-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: #EF4444;
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    animation: yc-pulse 2s infinite;
}

.yc-live-info {
    padding: 16px;
    background: #FFFFFF;
}

/* === 滚动动画 === */
.yc-animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.yc-animate-on-scroll.yc-visible {
    opacity: 1;
    transform: translateY(0);
}

/* === 干扰块隐藏 === */
.grass-jammer-block {
    display: none !important;
    height: 0;
    overflow: hidden;
    visibility: hidden;
    position: absolute;
    left: -9999px;
}