/* ===== 全局 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    -webkit-text-size-adjust: 100%;
}

:root {
    --primary: #5b5fff;
    --primary-dark: #484cc7;
    --bg: transparent;
    --bg-alt: rgba(255,255,255,.7);
    --text: #1e1e2e;
    --text-light: #4a4d63;
    --card-bg: rgba(255,255,255,.78);
    --card-shadow: 0 8px 32px rgba(0,0,0,.08);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: .3s ease;
    --max-width: 1100px;
    --nav-height: 64px;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    position: relative;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 壁纸背景层 ===== */
#bg-layer {
    position: fixed;
    inset: 0;
    z-index: -2;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

/* 半透明遮罩，让内容清晰可读 */
#bg-overlay {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: rgba(255,255,255,.45);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

/* ===== 导航 ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-height);
    background: rgba(255,255,255,.75);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(255,255,255,.2);
    z-index: 1000;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -1px;
}

.logo .dot {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-light);
    font-size: .95rem;
    font-weight: 500;
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 2px;
    background: var(--primary);
    transition: width var(--transition);
    border-radius: 2px;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* 移动端汉堡菜单 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 26px; height: 2.5px;
    background: var(--text);
    border-radius: 4px;
    transition: var(--transition);
}

.menu-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle.open span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
}

.hero-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    width: 100%;
}

.hero-text { flex: 1; }

.hero-greeting {
    color: var(--primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.hero-text h1 {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.1;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 480px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.hero-social {
    display: flex;
    gap: 20px;
}

.hero-social a {
    color: var(--text-light);
    font-size: 1.3rem;
    transition: color var(--transition), transform var(--transition);
}

.hero-social a:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

/* 头像 - 使用真实图片 */
.hero-avatar {
    flex-shrink: 0;
}

.avatar-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 20px 60px rgba(91,95,255,.3);
    border: 4px solid rgba(255,255,255,.6);
    display: block;
}

/* ===== Section 通用 ===== */
.section {
    padding: 100px 0;
}

.bg-alt {
    background: var(--bg-alt);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 48px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px; height: 4px;
    background: var(--primary);
    border-radius: 4px;
    margin: 12px auto 0;
}

/* ===== 关于 ===== */
.about-content {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
}

.about-content p {
    margin-bottom: 16px;
}

.about-content strong {
    color: var(--text);
}

/* ===== 项目 ===== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition), box-shadow var(--transition);
    position: relative;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0,0,0,.12);
}

.project-card.featured {
    border: 2px solid var(--primary);
}

.project-badge {
    position: absolute;
    top: 16px; right: 16px;
    background: var(--primary);
    color: #fff;
    font-size: .75rem;
    padding: 3px 12px;
    border-radius: 20px;
    font-weight: 600;
}

.project-icon {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.project-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.project-card p {
    color: var(--text-light);
    font-size: .93rem;
    margin-bottom: 20px;
}

/* ===== APK 下载板块 ===== */
.apk-download {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px 32px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: -28px;
    margin-bottom: 60px;
    border: 1px solid rgba(91,95,255,.15);
    transition: transform var(--transition), box-shadow var(--transition);
}

.apk-download:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,.1);
}

.apk-download-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), #a78bfa);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #fff;
}

.apk-download-info {
    flex: 1;
    min-width: 0;
}

.apk-download-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text);
}

.apk-download-desc {
    font-size: .88rem;
    color: var(--text-light);
    margin-bottom: 6px;
}

.apk-download-meta {
    display: flex;
    gap: 16px;
    font-size: .78rem;
    color: var(--text-light);
    opacity: .75;
}

.apk-download-meta i {
    margin-right: 4px;
}

.apk-download-btn {
    flex-shrink: 0;
    white-space: nowrap;
}

@media (max-width: 640px) {
    .apk-download {
        flex-wrap: wrap;
        padding: 20px;
        gap: 14px;
        margin-top: -28px;
        margin-bottom: 36px;
    }

    .apk-download-icon {
        width: 48px;
        height: 48px;
        font-size: 1.3rem;
    }

    .apk-download-info {
        flex: 1 1 calc(100% - 68px);
    }

    .apk-download-info h3 {
        font-size: 1rem;
    }

    .apk-download-desc {
        font-size: .82rem;
    }

    .apk-download-meta {
        flex-wrap: wrap;
        gap: 10px;
    }

    .apk-download-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ===== 嵌入 iframe ===== */
.embed-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.embed-section h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.embed-wrapper {
    position: relative;
    width: 100%;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(240,240,240,.5);
    aspect-ratio: 16 / 10;
}

.embed-wrapper iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: none;
}

.embed-fallback {
    display: none;
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
    background: rgba(245,245,245,.8);
    color: var(--text-light);
    text-align: center;
    padding: 24px;
}

.embed-wrapper iframe:not(:defined) ~ .embed-fallback,
.embed-wrapper iframe[src="about:blank"] ~ .embed-fallback {
    display: flex;
}

.embed-fallback a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* ===== 技能 ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 20px;
    max-width: 700px;
    margin: 0 auto;
}

.skill-item {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: transform var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.skill-item:hover {
    transform: translateY(-4px);
}

.skills-joke {
    text-align: center;
    margin-top: 32px;
    font-size: .85rem;
    color: var(--text-light);
    opacity: .6;
    font-style: italic;
}

.skill-icon {
    font-size: 2rem;
    color: var(--primary);
    display: block;
    margin-bottom: 8px;
}

.skill-name {
    font-size: .9rem;
    font-weight: 600;
}

/* ===== 优质网站 ===== */
.site-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.site-grid .site-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 20px 16px;
    text-align: center;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    color: var(--text);
    display: block;
    border: 1px solid rgba(255,255,255,.3);
}

.site-grid .site-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0,0,0,.1);
    border-color: var(--primary);
}

.site-card-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(91,95,255,.08);
    padding: 8px;
}

.site-card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.site-card-name {
    font-size: .9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.site-card-desc {
    font-size: .78rem;
    color: var(--text-light);
    line-height: 1.4;
}

.site-section-label {
    text-align: center;
    margin-top: 36px;
    margin-bottom: 20px;
}

.site-section-label .label-badge {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    font-size: .8rem;
    font-weight: 600;
    padding: 4px 18px;
    border-radius: 20px;
    letter-spacing: 1px;
}

@media (max-width: 600px) {
    .site-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .site-grid .site-card {
        padding: 16px 12px;
    }
    .site-card-icon {
        width: 40px;
        height: 40px;
    }
}

/* ===== 联系 ===== */
.contact-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 24px;
}

#contact .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 0 auto;
    width: fit-content;
}

#contact .container {
    text-align: center;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: .95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    touch-action: manipulation;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(91,95,255,.35);
}

.btn-outline {
    border-color: rgba(255,255,255,.6);
    color: var(--text);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 20px;
    font-size: .85rem;
    background: var(--primary);
    color: #fff;
}

.btn-sm:hover {
    background: var(--primary-dark);
}

.btn-lg {
    padding: 14px 36px;
    font-size: 1.05rem;
}

/* ===== 登录弹窗 ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn .25s ease;
}

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

.modal-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 36px 32px;
    width: 360px;
    max-width: 90vw;
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
    position: relative;
    animation: slideUp .3s ease;
}

@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.modal-close {
    position: absolute;
    top: 12px; right: 16px;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: #999;
    cursor: pointer;
    transition: color .2s;
    line-height: 1;
}
.modal-close:hover { color: #333; }

.modal-title {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.modal-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e8e8f0;
    border-radius: 10px;
    font-size: .95rem;
    outline: none;
    transition: border-color .25s;
    background: #f8f9fc;
}
.modal-input:focus {
    border-color: var(--primary);
    background: #fff;
}

.modal-error {
    background: #fff0f0;
    color: #e74c3c;
    font-size: .85rem;
    padding: 10px 14px;
    border-radius: 8px;
    text-align: center;
}

.modal-btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 1rem;
    margin-top: 4px;
}

.forgot-link {
    text-align: center;
    font-size: .85rem;
}
.forgot-link a {
    color: #e74c3c;
    text-decoration: none;
}
.forgot-link a:hover {
    text-decoration: underline;
}

/* ===== 管理后台 ===== */
.admin-panel {
    background: #f5f6fa;
    min-height: 100vh;
    padding-bottom: 60px;
}

.admin-header {
    background: linear-gradient(135deg, var(--primary), #a78bfa);
    color: #fff;
    padding: 20px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}
.admin-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
}

.admin-header-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.admin-user-badge {
    font-size: .85rem;
    opacity: .9;
}

.admin-logout-btn {
    background: rgba(255,255,255,.2);
    border: 1px solid rgba(255,255,255,.3);
    color: #fff;
    padding: 6px 18px;
    border-radius: 20px;
    cursor: pointer;
    font-size: .82rem;
    transition: background .2s;
}
.admin-logout-btn:hover {
    background: rgba(255,255,255,.35);
}

.admin-content {
    max-width: 960px;
    margin: 0 auto;
    padding: 28px 20px;
}

.admin-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.admin-card {
    background: #fff;
    border-radius: 14px;
    padding: 22px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.admin-card-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.admin-card-body {
    display: flex;
    flex-direction: column;
}
.admin-card-num {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
}
.admin-card-label {
    font-size: .82rem;
    color: var(--text-light);
    margin-top: 2px;
}

.admin-section {
    background: #fff;
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.admin-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.admin-section-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--text);
}

.admin-add-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 6px 18px;
    border-radius: 20px;
    font-size: .82rem;
    cursor: pointer;
    transition: background .2s;
}
.admin-add-btn:hover {
    background: var(--primary-dark);
}

/* 密码和操作按钮 */
.pw-text {
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: .82rem;
    background: #f0f0f5;
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--text);
}

.time-col {
    white-space: nowrap;
    font-size: .82rem;
    color: var(--text-light);
}

.action-col {
    white-space: nowrap;
    text-align: right;
}

.admin-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: .85rem;
    transition: all .2s;
    margin-left: 6px;
}
.admin-action-btn.edit {
    background: #eef0ff;
    color: var(--primary);
}
.admin-action-btn.edit:hover {
    background: var(--primary);
    color: #fff;
}
.admin-action-btn.delete {
    background: #fff0f0;
    color: #e74c3c;
}
.admin-action-btn.delete:hover {
    background: #e74c3c;
    color: #fff;
}

.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
.admin-table th {
    text-align: left;
    padding: 10px 12px;
    background: #f8f9fc;
    color: var(--text-light);
    font-weight: 600;
    border-bottom: 2px solid #eef0f5;
}
.admin-table td {
    padding: 10px 12px;
    border-bottom: 1px solid #f0f0f5;
    color: var(--text);
}
.admin-table tr:hover td {
    background: #f8f9ff;
}

.admin-empty {
    text-align: center;
    color: var(--text-light);
    font-size: .9rem;
    padding: 30px 0;
}

.admin-cat-stats {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}
.admin-cat-item {
    background: #f8f9fc;
    border-radius: 10px;
    padding: 14px;
    text-align: center;
}
.admin-cat-item .cat-name {
    font-weight: 600;
    font-size: .9rem;
    margin-bottom: 4px;
}
.admin-cat-item .cat-count {
    font-size: .8rem;
    color: var(--text-light);
}
.admin-cat-item .cat-total {
    font-size: .9rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 2px;
}

@media (max-width: 700px) {
    .admin-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .admin-header {
        padding: 14px 16px;
    }
    .admin-header h2 {
        font-size: 1rem;
    }
    .admin-content {
        padding: 16px 10px;
    }
    .admin-section {
        padding: 14px;
    }
    .admin-section-header {
        flex-wrap: wrap;
        gap: 8px;
    }
    /* 表格：小屏隐藏"注册时间"列 */
    .admin-table th:nth-child(4),
    .admin-table td:nth-child(4) {
        display: none;
    }
    .admin-card-num {
        font-size: 1.15rem;
    }
    .admin-card {
        padding: 16px 14px;
        gap: 12px;
    }
    .admin-card-icon {
        font-size: 1.5rem;
    }
    .admin-cat-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .admin-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .admin-card {
        padding: 14px 12px;
    }
    .admin-card-num {
        font-size: 1rem;
    }
    .admin-section {
        padding: 12px;
        border-radius: 12px;
    }
    .admin-table {
        font-size: .78rem;
        min-width: 420px;
    }
    .admin-table th,
    .admin-table td {
        padding: 7px 5px;
    }
    .admin-table th:first-child,
    .admin-table td:first-child {
        padding-left: 2px;
    }
    .admin-table th:last-child,
    .admin-table td:last-child {
        padding-right: 2px;
    }
    .admin-add-btn {
        font-size: .75rem;
        padding: 5px 14px;
    }
    .admin-action-btn {
        width: 28px;
        height: 28px;
        font-size: .78rem;
    }
    .admin-cat-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .admin-cat-item {
        padding: 10px;
    }
    .admin-cat-item .cat-name {
        font-size: .82rem;
    }
    .pw-text {
        font-size: .75rem;
        padding: 1px 5px;
    }
    .admin-logout-btn {
        padding: 5px 14px;
        font-size: .75rem;
    }
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 32px 0;
    color: var(--text-light);
    font-size: .9rem;
    background: rgba(255,255,255,.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 18px;
    }

    .nav-links {
        position: fixed;
        top: var(--nav-height); left: 0; right: 0;
        flex-direction: column;
        background: rgba(255,255,255,.92);
        backdrop-filter: blur(16px);
        padding: 24px 32px;
        gap: 20px;
        transform: translateY(-120%);
        opacity: 0;
        transition: all var(--transition);
        box-shadow: 0 8px 30px rgba(0,0,0,.08);
    }

    .nav-links.show {
        transform: translateY(0);
        opacity: 1;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-inner {
        flex-direction: column-reverse;
        text-align: center;
        padding: 20px 0 40px;
    }

    .hero-text h1 {
        font-size: 2.8rem;
    }

    .hero-desc {
        max-width: 100%;
        font-size: 1.05rem;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-social {
        justify-content: center;
    }

    .avatar-img {
        width: 130px;
        height: 130px;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 32px;
    }

    .project-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .project-card {
        padding: 24px 20px;
    }

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

    .embed-section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .hero {
        min-height: calc(100vh - var(--nav-height));
        padding-top: var(--nav-height);
    }

    .hero-text h1 {
        font-size: 2.2rem;
        letter-spacing: -1px;
        margin-bottom: 12px;
    }

    .hero-greeting {
        font-size: 1rem;
    }

    .hero-desc {
        font-size: .95rem;
        margin-bottom: 24px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .hero-actions .btn {
        justify-content: center;
        padding: 12px 20px;
        font-size: .9rem;
    }

    .avatar-img {
        width: 110px;
        height: 110px;
        border-width: 3px;
    }

    .section {
        padding: 44px 0;
    }

    .section-title {
        font-size: 1.35rem;
        margin-bottom: 24px;
    }

    .section-title::after {
        width: 36px;
        height: 3px;
        margin-top: 8px;
    }

    .about-content {
        font-size: 1rem;
    }

    .project-grid {
        gap: 14px;
    }

    .project-card {
        padding: 20px 16px;
        border-radius: 14px;
    }

    .project-icon {
        font-size: 1.8rem;
        margin-bottom: 12px;
    }

    .project-card h3 {
        font-size: 1.05rem;
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .skill-item {
        padding: 18px 12px;
        border-radius: var(--radius-sm);
    }

    .skill-icon {
        font-size: 1.6rem;
    }

    .btn-lg {
        width: 100%;
        justify-content: center;
        padding: 12px 24px;
        font-size: .95rem;
    }

    .footer {
        padding: 24px 0;
        font-size: .82rem;
    }
}

/* 超小屏额外优化 */
@media (max-width: 380px) {
    .modal-card {
        padding: 28px 18px 24px;
        max-width: 94vw;
    }

    .modal-input {
        padding: 10px 12px;
        font-size: .88rem;
    }

    .avatar-img {
        width: 100px;
        height: 100px;
    }

    .hero-text h1 {
        font-size: 1.9rem;
    }

    .admin-cards {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
}

/* ===== 壁纸审核 ===== */
.review-wp-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.review-wp-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    background: #f8f9fc;
    border-radius: 12px;
    transition: background .2s;
}
.review-wp-item:hover {
    background: #f0f1f8;
}
.review-wp-img {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    background-size: cover;
    background-position: center;
    background-color: #e8e8f0;
    flex-shrink: 0;
}
.review-wp-info {
    flex: 1;
    min-width: 0;
}
.review-wp-name {
    font-size: .9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.review-wp-user {
    font-size: .78rem;
    color: var(--text-light);
    margin-bottom: 2px;
}
.review-wp-time {
    font-size: .75rem;
    color: var(--text-light);
    opacity: .7;
}
.review-wp-note {
    font-size: .8rem;
    color: var(--text-light);
    margin: 4px 0;
    padding: 4px 8px;
    background: #f0f0f8;
    border-radius: 6px;
    display: inline-block;
    max-width: 100%;
    word-break: break-all;
}
.review-note-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: .78rem;
    resize: none;
    outline: none;
    background: #fafafa;
    transition: border-color .2s;
    box-sizing: border-box;
}
.review-note-input:focus {
    border-color: var(--primary);
    background: #fff;
}
.review-wp-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}
.review-btn {
    padding: 6px 16px;
    border: none;
    border-radius: 8px;
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
}
.review-btn-ok {
    background: #d4edda;
    color: #155724;
}
.review-btn-ok:hover {
    background: #155724;
    color: #fff;
}
.review-btn-no {
    background: #f8d7da;
    color: #721c24;
}
.review-btn-no:hover {
    background: #721c24;
    color: #fff;
}

@media (max-width: 600px) {
    .review-wp-item {
        flex-wrap: wrap;
        gap: 10px;
    }
    .review-wp-img {
        width: 60px;
        height: 45px;
    }
    .review-wp-actions {
        width: 100%;
        justify-content: flex-end;
    }
}