/* ========== 全局重置与白色传统底色 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #1e293b;
    position: relative;
    overflow-x: hidden;
    /* 纯白色背景，传统简洁 */
    background: #ffffff;
    zoom: 0.9;
}
@media (max-width: 1200px) {
    body { zoom: 0.9; }
}
@media (max-width: 768px) {
    body { zoom: 0.85; }
}

/* 以下所有样式保持不变，仅背景已改为纯白 */
/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 0.8rem 2rem;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    gap: 1rem;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    white-space: nowrap;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1e3a8a, #2563eb, #1e3a8a);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 6s linear infinite;
    letter-spacing: 0.5px;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-item {
    color: #334155;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: 0.2s;
    cursor: pointer;
    white-space: nowrap;
}

.nav-item:hover {
    color: #2563eb;
    text-shadow: none;
}

.nav-item.active {
    color: #2563eb;
    border-bottom: 2px solid #2563eb;
}

.navbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 赞助按钮（保留原有星空特效） */
.donate-btn {
    position: relative;
    background: linear-gradient(145deg, #4a2f6e, #2b1a3a, #0f0c1f);
    border: 1px solid rgba(255, 215, 0, 0.5);
    border-radius: 2.5rem;
    padding: 0.4rem 1.2rem 0.4rem 1rem;
    color: #ffecb3;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3), 0 0 40px rgba(106, 13, 173, 0.4);
    backdrop-filter: blur(5px);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    z-index: 10;
    line-height: 1;
}
.donate-btn i {
    font-size: 1.1rem;
    color: #ffaa33;
    text-shadow: 0 0 15px #ffaa33, 0 0 30px #ff5500;
    animation: heartBeat 2s infinite;
}
.donate-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 215, 0, 0.4), rgba(138, 43, 226, 0.3) 40%, transparent 70%);
    animation: rotate 12s linear infinite;
    z-index: -1;
}
.donate-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(2px 2px at 10px 20px, #fff, rgba(0,0,0,0)),
                      radial-gradient(2px 2px at 30px 5px, #ffd700, rgba(0,0,0,0)),
                      radial-gradient(3px 3px at 50px 15px, #b0c4ff, rgba(0,0,0,0)),
                      radial-gradient(2px 2px at 70px 25px, #fffacd, rgba(0,0,0,0)),
                      radial-gradient(4px 4px at 90px 8px, #e0b0ff, rgba(0,0,0,0));
    background-size: 200% 200%;
    background-repeat: no-repeat;
    animation: twinkle 4s infinite alternate;
    pointer-events: none;
}
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
@keyframes twinkle {
    0% { opacity: 0.2; }
    50% { opacity: 1; }
    100% { opacity: 0.2; }
}
@keyframes heartBeat {
    0% { transform: scale(1); }
    25% { transform: scale(1.2); }
    40% { transform: scale(1); }
    60% { transform: scale(1.2); }
    100% { transform: scale(1); }
}
.donate-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px #ffaa33, 0 0 80px #aa00ff;
    border-color: #ffd966;
}
.donate-btn:hover i {
    animation: heartBeat 1s infinite;
}
.donate-btn:hover::before {
    animation-duration: 6s;
}
.donate-btn:hover::after {
    animation-duration: 2s;
}

/* 会员按钮等（略，保留原有样式但调整颜色适应白底） */
.vip-badge {
    background: rgba(30, 50, 80, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(30, 100, 200, 0.3);
    padding: 0.3rem 1rem;
    border-radius: 2.5rem;
    color: #2563eb;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: 0 0 10px rgba(59,130,246,0.2);
    text-shadow: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.vip-badge i {
    font-size: 1rem;
    color: #f59e0b;
}
.vip-badge:hover {
    background: rgba(30, 100, 200, 0.2);
    border-color: #3b82f6;
    box-shadow: 0 0 20px #3b82f6;
    transform: translateY(-1px);
}
.vip-badge::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
    transform: rotate(25deg);
    transition: transform 0.8s ease, opacity 0.3s;
    opacity: 0;
    pointer-events: none;
}
.vip-badge:hover::after {
    opacity: 1;
    transform: rotate(25deg) translate(30%, 10%);
}

/* 主要按钮 */
.btn-buy,
.btn-parse,
.modal-btn {
    position: relative;
    padding: 0.8rem 1.8rem;
    border: none;
    border-radius: 2.5rem;
    background: linear-gradient(135deg, #1e40af, #3b82f6, #1e40af);
    background-size: 200% 200%;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(59,130,246,0.3);
    transition: all 0.4s ease;
    animation: gradientShift 6s ease infinite;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    overflow: hidden;
    z-index: 1;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.btn-buy::before,
.btn-parse::before,
.modal-btn::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 2.7rem;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity 0.4s;
    z-index: -1;
}
.btn-buy:hover,
.btn-parse:hover,
.modal-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 35px rgba(59,130,246,0.5);
}
.btn-buy:hover::before,
.btn-parse:hover::before,
.modal-btn:hover::before {
    opacity: 1;
}
.btn-buy:active,
.btn-parse:active,
.modal-btn:active {
    transform: translateY(1px) scale(0.98);
}
.btn-buy:disabled,
.btn-parse:disabled,
.modal-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    animation: none;
    transform: none;
    box-shadow: none;
}
.btn-buy::after,
.btn-parse::after,
.modal-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 200%;
    height: 200%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
    transform: rotate(25deg);
    transition: transform 0.8s ease, opacity 0.3s;
    opacity: 0;
    z-index: 2;
    pointer-events: none;
}
.btn-buy:hover::after,
.btn-parse:hover::after,
.modal-btn:hover::after {
    opacity: 1;
    transform: rotate(25deg) translate(30%, 10%);
}
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 返回首页按钮（次要） */
.back-home-btn {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 2.5rem;
    padding: 0.5rem 1.4rem;
    color: #1e3a8a;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.back-home-btn:hover {
    background: rgba(59,130,246,0.1);
    border-color: #3b82f6;
    color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59,130,246,0.2);
}

/* ===== 主容器 ===== */
.container {
    width: 100%;
    max-width: 1000px;
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 5.5rem;
    margin-bottom: 2rem;
    padding: 0 1.5rem;
    flex: 1;
}

/* 标题行 */
.title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}
.page-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.page-title h1 {
    font-size: 3rem;
    font-weight: 600;
    background: linear-gradient(135deg, #1e293b, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    letter-spacing: -0.02em;
    line-height: 1.2;
}
@keyframes shine {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* 状态卡片 */
.status-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1.5rem;
    padding: 1.5rem;
    width: 100%;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.1);
}
.status-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 200%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #3b82f6, #60a5fa, transparent);
    animation: scan 8s linear infinite;
    opacity: 0.5;
}
@keyframes scan {
    0% { top: -5%; left: -150%; }
    30% { top: 20%; left: 50%; }
    60% { top: 60%; left: 100%; }
    100% { top: 105%; left: 200%; }
}
.status-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}
.status-icon {
    font-size: 1.8rem;
    color: #3b82f6;
    filter: drop-shadow(0 0 8px #3b82f6);
}
.status-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: #1e293b;
    letter-spacing: 1px;
}
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.8rem;
}
.status-item {
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 1rem;
    padding: 1rem 0.8rem;
    text-align: center;
    transition: 0.2s;
    backdrop-filter: blur(4px);
}
.status-item:hover {
    border-color: #3b82f6;
    box-shadow: 0 0 12px rgba(59,130,246,0.2);
}
.status-label {
    font-size: 0.8rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.4rem;
    font-weight: 500;
}
.status-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0f172a;
    text-shadow: none;
    line-height: 1.2;
}
.status-value small {
    font-size: 0.9rem;
    color: #3b82f6;
    margin-left: 0.2rem;
    font-weight: 500;
}
.status-badge {
    display: inline-block;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-radius: 2rem;
    padding: 0.25rem 0.8rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    box-shadow: 0 0 12px #3b82f6;
}

/* 套餐区域 */
.plan-section {
    position: relative;
    width: 100%;
    margin-top: 1rem;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    color: #0f172a;
    margin: 2rem 0 1.5rem;
    text-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    letter-spacing: 1px;
}
.section-title i {
    color: #f59e0b;
    font-size: 2.2rem;
    filter: drop-shadow(0 0 8px #f59e0b);
    animation: rotate 4s infinite alternate;
}
@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(5deg) scale(1.1); }
}
.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    width: 100%;
    margin-bottom: 1rem;
}
.plan-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1.5rem;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.plan-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: #3b82f6;
    box-shadow: 0 20px 40px -8px rgba(59,130,246,0.2);
}
.plan-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 1.7rem;
    background: radial-gradient(circle at 30% 30%, rgba(59,130,246,0.1), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}
.plan-card:hover::before {
    opacity: 1;
}
.hot-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.2rem 1rem;
    border-radius: 2rem;
    box-shadow: 0 0 12px #ef4444;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.2rem;
}
.plan-card h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #0f172a;
    letter-spacing: -0.01em;
}
.plan-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e40af;
    margin: 0.5rem 0;
    line-height: 1.2;
    text-shadow: none;
}
.plan-price small {
    font-size: 1rem;
    color: #475569;
    font-weight: 400;
}
.plan-desc {
    color: #334155;
    margin: 0.5rem 0 1rem;
    font-size: 0.95rem;
    line-height: 1.5;
    flex-grow: 1;
    font-weight: 400;
}
.plan-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0 1.2rem;
    font-size: 0.95rem;
    color: #475569;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 1rem;
    font-weight: 500;
}
.plan-meta span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}
.plan-meta i {
    color: #3b82f6;
    width: 1.2rem;
    font-size: 1rem;
}

/* 首页特有卡片 */
.core-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 70vh;
    justify-content: center;
}
.page-subtitle {
    text-align: center;
    color: #475569;
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
}
.neo-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1.5rem;
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.1);
    padding: 1.2rem;
    transition: box-shadow 0.2s, border-color 0.2s;
    position: relative;
    overflow: hidden;
    width: 100%;
    margin-bottom: 2rem;
}
.neo-card:hover {
    box-shadow: 0 12px 30px -8px rgba(59,130,246,0.2);
    border-color: rgba(59,130,246,0.3);
}
.neo-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 1.6rem;
    background: linear-gradient(45deg, transparent 30%, rgba(59,130,246,0.1) 50%, transparent 70%);
    background-size: 200% 200%;
    animation: borderGlow 8s linear infinite;
    pointer-events: none;
    z-index: -1;
}
@keyframes borderGlow {
    0% { background-position: 0% 0%; }
    100% { background-position: 200% 200%; }
}
.search-row {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}
.input-group {
    position: relative;
    flex: 1;
}
.input-group input {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: none;
    border-radius: 1.5rem;
    background: rgba(0, 0, 0, 0.02);
    border: 2px solid rgba(0, 0, 0, 0.1);
    color: #0f172a;
    font-size: 1rem;
    outline: none;
    transition: 0.2s;
}
.input-group input:focus {
    border-color: #3b82f6;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 12px rgba(59,130,246,0.2);
}
.input-group label {
    position: absolute;
    left: 1.2rem;
    top: 0.9rem;
    color: #64748b;
    pointer-events: none;
    transition: 0.2s;
    font-size: 1rem;
}
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label {
    top: -0.6rem;
    left: 0.8rem;
    font-size: 0.75rem;
    background: #f1f5f9;
    padding: 0 0.4rem;
    color: #3b82f6;
    border-radius: 0.5rem;
}

/* 向下箭头 */
.scroll-down {
    margin-top: 2rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #3b82f6;
    font-size: 1.2rem;
    animation: bounce 2.5s infinite;
    transition: color 0.2s;
}
.scroll-down:hover {
    color: #1e40af;
    text-shadow: none;
}
.scroll-down i {
    font-size: 2rem;
    filter: drop-shadow(0 0 6px #3b82f6);
}
.scroll-down span {
    font-size: 0.9rem;
    margin-top: 0.2rem;
    opacity: 0.9;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}
.more-content {
    width: 100%;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    display: none;
}

/* 特性卡片 */
.features {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}
.feature-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1.2rem;
    padding: 1rem 1.5rem;
    min-width: 140px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    position: relative;
    overflow: hidden;
}
.feature-card:hover {
    transform: translateY(-4px);
    border-color: #3b82f6;
    box-shadow: 0 8px 20px rgba(59,130,246,0.15);
}
.feature-card i {
    font-size: 2rem;
    color: #3b82f6;
    margin-bottom: 0.3rem;
    display: block;
    text-shadow: none;
}
.feature-card .feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0f172a;
    margin-bottom: 0.2rem;
}
.feature-card .feature-desc {
    font-size: 0.8rem;
    color: #475569;
}

/* 使用教程卡片 */
.tutorial-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #1e293b, #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    letter-spacing: 1px;
}
.tutorial-steps {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}
.step-card {
    flex: 1 1 240px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 2rem;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}
.step-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 2.2rem;
    background: radial-gradient(circle at 30% 30%, rgba(59,130,246,0.1), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
    z-index: 0;
}
.step-card:hover {
    transform: translateY(-12px) scale(1.02);
    border-color: #3b82f6;
    box-shadow: 0 20px 40px -8px rgba(59,130,246,0.2);
}
.step-card:hover::before {
    opacity: 1;
}
.step-image {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.2rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 0 20px rgba(59,130,246,0.1);
    transition: all 0.4s;
    position: relative;
    z-index: 1;
}
.step-card:hover .step-image {
    border-color: #f59e0b;
    box-shadow: 0 0 30px #f59e0b;
    transform: scale(1.08) rotate(2deg);
    background: rgba(59,130,246,0.05);
}
.step-image i {
    font-size: 3.5rem;
    color: #3b82f6;
    filter: drop-shadow(0 0 6px #3b82f6);
    transition: all 0.4s;
}
.step-card:hover .step-image i {
    color: #f59e0b;
    filter: drop-shadow(0 0 12px #f59e0b);
}
.step-number {
    display: inline-block;
    width: 2.6rem;
    height: 2.6rem;
    line-height: 2.6rem;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-radius: 50%;
    color: #fff;
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    box-shadow: 0 0 12px #3b82f6;
    position: relative;
    z-index: 2;
    border: 1px solid rgba(255,255,255,0.3);
}
.step-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: #0f172a;
    margin-bottom: 0.6rem;
    text-shadow: none;
    letter-spacing: 0.5px;
}
.step-desc {
    font-size: 1rem;
    color: #334155;
    line-height: 1.6;
    opacity: 0.9;
    font-weight: 400;
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #64748b;
}
.disclaimer {
    text-align: center;
    font-size: 0.65rem;
    color: #64748b;
    margin-top: 0.5rem;
    line-height: 1.4;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 0.8rem;
}

/* ===== 视频信息模态框 ===== */
.video-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.video-modal-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 1.5rem;
    padding: 1.8rem;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
    pointer-events: auto;
    color: #0f172a;
    min-height: 0;
}
.video-modal-close {
    position: absolute;
    top: 1rem;
    right: 1.2rem;
    font-size: 1.8rem;
    color: #64748b;
    cursor: pointer;
    transition: 0.2s;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
}
.video-modal-close:hover {
    color: #0f172a;
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(90deg);
}
.video-modal-info {
    display: flex;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 1rem;
    padding: 1rem;
    align-items: flex-start;
}
.video-modal-cover {
    flex-shrink: 0;
    width: 160px;
    height: 90px;
    border-radius: 0.8rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.1);
}
.cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.video-modal-header {
    flex: 1;
    min-width: 0;
}
.video-modal-title {
    font-size: 1.3rem;
    font-weight: 600;
    word-break: break-word;
    color: #0f172a;
    text-shadow: none;
    line-height: 1.4;
    margin-bottom: 0.8rem;
}
.cover-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.cover-link {
    flex: 1;
    background: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 2rem;
    padding: 0.4rem 1rem;
    color: #1e40af;
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 180px;
}
.format-tabs {
    display: flex;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    justify-content: flex-start;
    background: rgba(0, 0, 0, 0.02);
    padding: 0.6rem;
    border-radius: 3rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
}
.tab-btn {
    background: rgba(0, 0, 0, 0.02);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 2.5rem;
    padding: 0.6rem 1.4rem;
    color: #334155;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    letter-spacing: 0.3px;
}
.tab-btn:hover {
    background: rgba(59,130,246,0.1);
    border-color: #3b82f6;
    color: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59,130,246,0.15);
}
.tab-btn.active {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-color: #3b82f6;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 0 16px #3b82f6;
    transform: scale(1.02);
    text-shadow: none;
}
.tab-count {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2rem;
    padding: 0.2rem 0.7rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #0f172a;
    transition: all 0.2s;
}
.tab-btn.active .tab-count {
    background: rgba(255,255,255,0.3);
    color: #fff;
}
.formats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}
.formats-table th {
    text-align: left;
    padding: 0.8rem 0.5rem 0.5rem 0.5rem;
    color: #1e40af;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.8rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}
.formats-table td {
    padding: 0.6rem 0.5rem;
    color: #334155;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
.formats-table tr:hover td {
    background: rgba(59,130,246,0.05);
}
.audio-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
}
.audio-badge.yes {
    color: #10b981;
}
.audio-badge.no {
    color: #ef4444;
}
.empty-state {
    text-align: center;
    padding: 2rem;
    color: #64748b;
    font-style: italic;
}
.empty-state i {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #94a3b8;
}
.download-btn {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 2rem;
    padding: 0.3rem 1rem;
    color: #1e40af;
    cursor: pointer;
    transition: 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}
.download-btn:hover {
    background: rgba(59,130,246,0.1);
    border-color: #3b82f6;
    color: #2563eb;
    box-shadow: 0 0 12px #3b82f6;
    transform: translateY(-1px);
}
.download-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 视频教程模态框 */
#tutorial-modal {
    animation: fadeInScale 0.4s ease forwards;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}
#tutorial-modal .video-modal-card {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    max-width: 700px;
    width: 90%;
    padding: 1.5rem;
    border-radius: 2rem;
}
#tutorial-modal .video-wrapper {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
#tutorial-modal video {
    width: 100%;
    height: 100%;
    display: block;
    background: #000;
    object-fit: cover;
}
#tutorial-modal .modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    color: #64748b;
    cursor: pointer;
    z-index: 10;
    line-height: 1;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.05);
}
#tutorial-modal .modal-close:hover {
    color: #0f172a;
    background: rgba(0, 0, 0, 0.1);
    transform: rotate(90deg);
}
@keyframes fadeInScale {
    0% { opacity: 0; transform: scale(0.95); }
    100% { opacity: 1; transform: scale(1); }
}

/* 收藏本站悬浮提示 */
.nav-item-wrapper {
    position: relative;
    display: inline-block;
}
.bookmark-tooltip {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 1rem;
    padding: 0.8rem 1.2rem;
    white-space: nowrap;
    color: #0f172a;
    font-size: 0.9rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 200;
    pointer-events: none;
    text-align: center;
    line-height: 1.6;
    min-width: 220px;
}
.nav-item-wrapper:hover .bookmark-tooltip {
    opacity: 1;
    visibility: visible;
}
.bookmark-tooltip p {
    margin: 0;
    color: #0f172a;
}
.bookmark-tooltip .shortcut {
    display: inline-block;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 0.4rem;
    padding: 0.2rem 0.8rem;
    margin-top: 0.3rem;
    font-family: 'Orbitron', monospace;
    font-size: 0.9rem;
    color: #f59e0b;
}
.bookmark-tooltip::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.95);
    border-left: 1px solid rgba(0, 0, 0, 0.1);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* Toast 通知 */
.toast-notification {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-left: 3px solid #3b82f6;
    border-radius: 0.8rem;
    padding: 0.8rem 1.2rem;
    color: #0f172a;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateX(calc(100% + 1.5rem));
    transition: transform 0.3s ease;
    z-index: 3000;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    min-width: 240px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
}
.toast-notification.show {
    transform: translateX(0);
}
.toast-notification i { font-size: 1.2rem; }
.toast-notification.success i { color: #10b981; }
.toast-notification.error i { color: #ef4444; }
.toast-notification.info i { color: #3b82f6; }

/* 响应式调整 */
@media (max-width: 700px) {
    .navbar {
        padding: 0.6rem 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    .navbar-menu {
        justify-content: flex-start;
        gap: 1rem;
    }
    .navbar-right {
        margin-left: 0;
        width: 100%;
        justify-content: flex-start;
    }
    .container {
        margin-top: 9rem;
    }
    .page-title h1 {
        font-size: 2rem;
    }
}
@media (max-width: 600px) {
    .container {
        margin-top: 10rem;
    }
    .status-grid {
        grid-template-columns: 1fr;
    }
    .plan-card {
        padding: 1.5rem 1rem;
    }
    .plan-price {
        font-size: 2rem;
    }
    .neo-card { padding: 1rem; }
    .search-row { flex-direction: column; gap: 0.8rem; }
    .btn-parse { width: 100%; }
    .tutorial-steps { flex-direction: column; }
    .step-card { flex: 1 1 auto; }
    .features { gap: 0.8rem; margin-top: 1.5rem; }
    .feature-card { min-width: 120px; padding: 0.8rem; }
    .video-modal-title { font-size: 1.1rem; }
    .video-modal-info { flex-direction: column; }
    .video-modal-cover { width: 100%; height: auto; aspect-ratio: 16/9; }
    .toast-notification {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        transform: translateY(400px);
    }
    .toast-notification.show {
        transform: translateY(0);
    }
}