/* ========================================
   飞行学苑入口页面样式
   ======================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    background-color: #f5f7fa;
    color: #2c3e50;
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ========================================
   顶部导航
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
    background: transparent;
}

.header-scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    padding: 12px 0;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    transition: color 0.3s;
}

.header-scrolled .logo {
    color: #2c3e50;
}

.logo i {
    font-size: 28px;
    color: #3498db;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.header-scrolled .nav-link {
    color: #2c3e50;
}

.nav-link:hover {
    color: #3498db;
}

.nav-link.active {
    color: #3498db;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: #3498db;
    border-radius: 2px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* 用户头像 */
.user-avatar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: all 0.3s;
}

.user-avatar i {
    font-size: 32px;
    color: #fff;
    transition: all 0.3s;
}

.user-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.header-scrolled .user-avatar i {
    color: #2c3e50;
}

.user-avatar:hover i {
    transform: scale(1.1);
    color: #3498db;
}

/* 用户下拉菜单 */
.user-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    padding: 8px 0;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s;
    z-index: 1000;
}

.user-avatar:hover .user-dropdown-menu,
.user-avatar.show .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-user-info {
    padding: 12px 16px;
    border-bottom: 1px solid #f0f0f0;
}

.dropdown-user-name {
    font-size: 14px;
    font-weight: 600;
    color: #2c3e50;
}

.dropdown-divider {
    height: 1px;
    background: #f0f0f0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 14px;
    color: #5a6a7a;
    cursor: pointer;
    transition: all 0.3s;
}

.dropdown-item:hover {
    background: #f5f7fa;
    color: #3498db;
}

.dropdown-item i {
    font-size: 14px;
}

/* ========================================
   英雄区域
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a252f 0%, #2c3e50 30%, #34495e 60%, #3498db 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    filter: blur(40px);
}

.cloud-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: -5%;
    animation: float 20s ease-in-out infinite;
}

.cloud-2 {
    width: 400px;
    height: 400px;
    top: 50%;
    right: -10%;
    animation: float 25s ease-in-out infinite reverse;
}

.cloud-3 {
    width: 250px;
    height: 250px;
    bottom: 10%;
    left: 30%;
    animation: float 18s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, -30px);
    }
}

.plane-icon {
    position: absolute;
    top: 20%;
    right: 15%;
    font-size: 120px;
    color: rgba(255, 255, 255, 0.08);
    transform: rotate(-20deg);
    animation: planeFly 15s ease-in-out infinite;
}

@keyframes planeFly {
    0%, 100% {
        transform: rotate(-20deg) translate(0, 0);
    }
    50% {
        transform: rotate(-15deg) translate(-20px, 20px);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: #fff;
    padding: 0 30px;
    max-width: 900px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: linear-gradient(90deg, #5dade2, #3498db, #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.4;
}

.hero-desc {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.btn-large {
    padding: 16px 40px;
    font-size: 17px;
    font-weight: 600;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(52, 152, 219, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(52, 152, 219, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-3px);
}

.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-gradient:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.btn-encyclopedia {
    background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
    color: #fff;
    box-shadow: 0 4px 20px rgba(39, 174, 96, 0.4);
}

.btn-encyclopedia:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(39, 174, 96, 0.5);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: bounce 2s ease-in-out infinite;
}

.hero-scroll i {
    font-size: 20px;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================================
   通用区块样式
   ======================================== */

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 17px;
    color: #7f8c8d;
}

/* ========================================
   入口卡片区域
   ======================================== */

.entry-section {
    padding: 100px 0;
    background: #f5f7fa;
}

.entry-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.entry-card {
    position: relative;
    background: #fff;
    border-radius: 20px;
    padding: 50px 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    overflow: hidden;
    display: block;
}

.entry-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.entry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #3498db, #5dade2);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.entry-card:hover::before {
    transform: scaleX(1);
}

.entry-card-classroom::before {
    background: linear-gradient(90deg, #3498db, #5dade2);
}

.entry-card-video::before {
    background: linear-gradient(90deg, #e74c3c, #f39c12);
}

.entry-card-aicoach::before {
    background: linear-gradient(90deg, #667eea, #764ba2);
}

.card-icon-wrap {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 30px;
}

.card-icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    opacity: 0.15;
}

.entry-card-classroom .card-icon-bg {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.entry-card-video .card-icon-bg {
    background: linear-gradient(135deg, #e74c3c, #f39c12);
}

.entry-card-aicoach .card-icon-bg {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.card-icon {
    position: relative;
    z-index: 1;
    font-size: 40px;
    line-height: 80px;
    text-align: center;
    width: 100%;
}

.entry-card-classroom .card-icon {
    color: #3498db;
}

.entry-card-video .card-icon {
    color: #e74c3c;
}

.entry-card-aicoach .card-icon {
    color: #667eea;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-title {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
}

.card-desc {
    font-size: 16px;
    color: #7f8c8d;
    margin-bottom: 25px;
}

.card-features {
    margin-bottom: 30px;
}

.card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #555;
    font-size: 15px;
}

.card-features i {
    color: #27ae60;
    font-size: 14px;
}

.card-action {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: #3498db;
    transition: gap 0.3s;
}

.entry-card-video .card-action {
    color: #e74c3c;
}

.entry-card-aicoach .card-action {
    color: #667eea;
}

.entry-card:hover .card-action {
    gap: 15px;
}

.card-decoration {
    position: absolute;
    bottom: -20px;
    right: -20px;
    font-size: 150px;
    color: rgba(0, 0, 0, 0.03);
    transition: all 0.4s;
}

.entry-card:hover .card-decoration {
    transform: scale(1.1) rotate(5deg);
}

/* ========================================
   课程分类区域
   ======================================== */

.categories-section {
    padding: 100px 0;
    background: #fff;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.category-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 16px;
    background: #f8f9fa;
    transition: all 0.3s ease;
}

.category-card:hover {
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.category-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: #fff;
}

.icon-theory {
    background: linear-gradient(135deg, #3498db, #2980b9);
}

.icon-practice {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
}

.icon-competition {
    background: linear-gradient(135deg, #f39c12, #e67e22);
}

.icon-certificate {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

.icon-public {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.icon-qa {
    background: linear-gradient(135deg, #1abc9c, #16a085);
}

.category-card h4 {
    font-size: 19px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.category-card p {
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.6;
}

/* ========================================
   特色优势区域
   ======================================== */

.features-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #fff;
}

.features-section .section-title {
    color: #fff;
}

.features-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    border-radius: 50%;
    background: rgba(52, 152, 219, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #3498db;
    transition: all 0.3s;
}

.feature-item:hover .feature-icon {
    background: #3498db;
    color: #fff;
    transform: scale(1.1);
}

.feature-item h4 {
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

/* ========================================
   底部
   ======================================== */

.footer {
    background: #1a252f;
    color: #fff;
    padding: 60px 0 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-logo i {
    color: #3498db;
    font-size: 26px;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h5 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fff;
}

.footer-col a {
    display: block;
    padding: 8px 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #3498db;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

/* ========================================
   用户中心弹窗
   ======================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

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

.modal-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 520px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-title i {
    color: #3498db;
}

.modal-close {
    font-size: 24px;
    color: #95a5a6;
    cursor: pointer;
    transition: color 0.3s;
    line-height: 1;
}

.modal-close:hover {
    color: #e74c3c;
}

.modal-body {
    padding: 24px;
}

.profile-avatar-section {
    text-align: center;
    margin-bottom: 24px;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
}

.profile-avatar img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.profile-avatar-text {
    font-size: 14px;
    color: #7f8c8d;
}

.profile-avatar-upload-hint {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #3498db;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    cursor: pointer;
}

.profile-avatar:hover .profile-avatar-upload-hint {
    background: #2980b9;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #2c3e50;
    margin-bottom: 8px;
}

.form-input-wrap {
    position: relative;
}

.form-input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #95a5a6;
    font-size: 16px;
}

.form-input {
    width: 100%;
    padding: 12px 14px 12px 44px;
    border: 1px solid #d9d9d9;
    border-radius: 8px;
    font-size: 15px;
    color: #2c3e50;
    transition: all 0.3s;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-input::placeholder {
    color: #bdc3c7;
}

.form-radio-group {
    display: flex;
    gap: 24px;
}

.form-radio {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 15px;
    color: #2c3e50;
}

.form-radio input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: #3498db;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid #f0f0f0;
}

.btn-modal {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-family: inherit;
}

.btn-modal-secondary {
    background: #f5f7fa;
    color: #5a6a7a;
}

.btn-modal-secondary:hover {
    background: #e8eaed;
}

.btn-modal-primary {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.btn-modal-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

/* ========================================
   赛事宣传板块样式
   ======================================== */
.match-promo-section {
    position: relative;
    padding: 80px 0 100px;
    overflow: hidden;
}
.match-promo-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, #1a1f3a 0%, #2d1b4e 50%, #1a237e 100%);
    z-index: 0;
}
.match-promo-bg::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(124,77,255,0.15) 0%, transparent 50%);
    animation: matchGlow 8s ease-in-out infinite;
}
@keyframes matchGlow {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}
.match-promo-section .section-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.match-promo-header {
    text-align: center;
    margin-bottom: 60px;
}
.match-promo-trophy {
    font-size: 64px;
    color: #ffd700;
    margin-bottom: 20px;
    text-shadow: 0 0 30px rgba(255,215,0,0.6);
    animation: trophyFloat 3s ease-in-out infinite;
}
@keyframes trophyFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.match-promo-title {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: 2px;
}
.match-promo-subtitle {
    font-size: 20px;
    color: rgba(255,255,255,0.8);
    letter-spacing: 4px;
}
.match-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}
.highlight-item {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 16px;
    padding: 32px 20px;
    text-align: center;
    transition: all 0.3s;
}
.highlight-item:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,215,0,0.4);
    box-shadow: 0 12px 40px rgba(124,77,255,0.3);
}
.highlight-icon {
    font-size: 36px;
    color: #ffd700;
    margin-bottom: 16px;
}
.highlight-item h4 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 8px;
    font-weight: 600;
}
.highlight-item p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}
.match-hot-section {
    margin-bottom: 40px;
}
.match-hot-label {
    color: #ffd700;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.match-hot-card {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 16px;
    padding: 24px;
    min-height: 80px;
}
.match-hot-loading {
    color: rgba(255,255,255,0.6);
    text-align: center;
    padding: 20px 0;
}
.match-hot-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.match-hot-info {
    flex: 1;
    min-width: 200px;
}
.match-hot-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
}
.match-hot-status.signing { background: #4caf50; color: #fff; }
.match-hot-status.scoring { background: #ff9800; color: #fff; }
.match-hot-status.finished { background: #2196f3; color: #fff; }
.match-hot-name {
    color: #fff;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 6px;
}
.match-hot-time {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}
.match-hot-btn {
    background: linear-gradient(135deg, #ffd700, #ffa500);
    color: #1a1f3a;
    padding: 10px 24px;
    border-radius: 24px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    white-space: nowrap;
}
.match-hot-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(255,215,0,0.4);
}
.match-hot-empty {
    color: rgba(255,255,255,0.6);
    text-align: center;
    padding: 30px 0;
    font-size: 16px;
}
.match-promo-action {
    text-align: center;
    margin-top: 20px;
}
.btn-match-all {
    display: inline-block;
    background: linear-gradient(135deg, #7c4dff, #5e35b1);
    color: #fff;
    padding: 14px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s;
    box-shadow: 0 6px 20px rgba(124,77,255,0.4);
}
.btn-match-all:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(124,77,255,0.6);
}

/* ========================================
   响应式设计
   ======================================== */

@media (max-width: 992px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-buttons {
        max-width: 480px;
        gap: 14px;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 15px;
    }
    
    .entry-cards {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    /* 用户头像在移动端更紧凑 */
    .user-avatar {
        width: 36px;
        height: 36px;
    }
    
    .user-avatar i {
        font-size: 28px;
    }
    
    /* 用户下拉菜单在移动端自适应宽度 */
    .user-dropdown-menu {
        min-width: 160px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 17px;
        line-height: 1.4;
        margin-bottom: 12px;
    }
    
    .hero-desc {
        font-size: 14px;
        line-height: 1.5;
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        grid-template-columns: 1fr;
        gap: 12px;
        max-width: 100%;
    }
    
    .btn-large {
        padding: 14px 30px;
        font-size: 15px;
        justify-content: center;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .entry-section,
    .categories-section,
    .features-section {
        padding: 60px 0;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .plane-icon {
        font-size: 80px;
    }
}

@media (max-width: 480px) {
    .header-container {
        padding: 0 20px;
    }
    
    .logo span {
        font-size: 18px;
    }
    
    .btn-admin span {
        display: none;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-large {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .entry-card {
        padding: 35px 25px;
    }
    
    .card-title {
        font-size: 22px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}