/* ============================================
   服务支持页面样式
   ============================================ */

/* ── Hero ── */
@keyframes heroGradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.support-hero {
    background: linear-gradient(135deg, var(--hero-from) 0%, var(--hero-via) 25%, var(--hero-to) 50%, #60a5fa 75%, var(--hero-via) 100%);
    background-size: 300% 300%;
    animation: heroGradientShift 8s ease infinite;
    padding: var(--spacing-lg) 0;
    border-radius: 0;
}
@keyframes heroBlobA {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(-20px, 15px) scale(1.08); }
}
@keyframes heroBlobB {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%       { transform: translate(15px, -12px) scale(1.06); }
}
@keyframes heroDot {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.18; }
    50%       { transform: translateY(-12px) translateX(6px); opacity: 0.32; }
}
.support-hero::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.07);
    border-radius: 50%;
    top: -80px;
    right: -60px;
    pointer-events: none;
    animation: heroBlobA 7s ease-in-out infinite;
}
.support-hero::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
    bottom: -50px;
    left: 10%;
    pointer-events: none;
    animation: heroBlobB 9s ease-in-out infinite;
}
.hero-particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.22);
    pointer-events: none;
    animation: heroDot linear infinite;
}
.hero-particle:nth-child(1) { width:6px;  height:6px;  top:20%; left:8%;   animation-duration:5s; animation-delay:0s; }
.hero-particle:nth-child(2) { width:4px;  height:4px;  top:60%; left:20%;  animation-duration:7s; animation-delay:1s; }
.hero-particle:nth-child(3) { width:5px;  height:5px;  top:30%; left:75%;  animation-duration:6s; animation-delay:2s; }
.hero-particle:nth-child(4) { width:3px;  height:3px;  top:70%; left:85%;  animation-duration:8s; animation-delay:0.5s; }
.hero-particle:nth-child(5) { width:5px;  height:5px;  top:15%; left:50%;  animation-duration:6.5s; animation-delay:1.5s; }
.hero-particle:nth-child(6) { width:4px;  height:4px;  top:80%; left:60%;  animation-duration:7.5s; animation-delay:3s; }
.support-hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 1;
}
.support-hero-tag {
    display: inline-block;
    background: rgba(255,255,255,0.15);
    padding: 4px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: var(--spacing-sm);
    backdrop-filter: blur(4px);
}
@keyframes hero-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.support-icon-large {
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
    display: block;
    animation: hero-float 3s ease-in-out infinite;
}
.support-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: white;
}
.support-desc {
    font-size: 1rem;
    opacity: 0.92;
    margin: 0;
    line-height: 1.6;
}

/* ── Hero 功能标签 ── */
.hero-feature-tags {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}
.hero-feature-tags span {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    backdrop-filter: blur(4px);
}

/* ── Hero 平台标识 ── */
.hero-platforms {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: var(--spacing-sm);
    opacity: 0.65;
    font-size: 0.88rem;
    letter-spacing: 0.02em;
}
.hero-platform-dot {
    opacity: 0.4;
}

/* ── 平台能力指标条 ── */
.capability-bar {
    background: linear-gradient(135deg, #f0f9ff 0%, #e8f4fd 100%);
    color: var(--text-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    border: 1px solid #d0e7f7;
}
.capability-bar-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}
.capability-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}
.capability-metric {
    background: var(--bg-card, white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.capability-metric:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.capability-metric-value {
    font-size: 1.6rem;
    font-weight: bold;
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--action-color);
}
.capability-metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ── 通用卡片网格 ── */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}
.support-card {
    background: var(--bg-card, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.support-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-color: var(--primary-color);
}
.support-card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}
.support-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}
.support-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}
.support-card-features {
    text-align: left;
    margin-top: var(--spacing-lg);
}
.support-card-features h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}
.support-card-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.support-card-features li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.support-card-features li:last-child {
    border-bottom: none;
}
.support-card-features li::before {
    content: "\eb7b";
    font-family: "remixicon";
    color: #10b981;
    font-weight: normal;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

/* ── 功能快速导航 ── */
.quick-nav {
    background: var(--bg-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}
.quick-nav-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}
.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}
.quick-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-md);
    background: var(--bg-card, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}
.quick-nav-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.quick-nav-item i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

/* ── 联系方式 ── */
.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}
.contact-card {
    background: var(--bg-card, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}
.contact-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}
.contact-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}
.contact-info {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}
.contact-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
}
.contact-button:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* ── FAQ ── */
.faq-section {
    background: var(--bg-muted);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}
.faq-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    text-align: center;
}
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}
.faq-item {
    background: var(--bg-card, white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}
.faq-question {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}
.faq-answer {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
    margin: 0;
}

/* ── 访客提示 ── */
.visitor-notice {
    background: var(--color-warning-light);
    border: 1px solid var(--accent-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}
.visitor-notice-title {
    font-weight: 600;
    color: var(--color-warning-dark);
    margin-bottom: var(--spacing-sm);
}
.visitor-notice-text {
    color: var(--color-warning-dark);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}
.visitor-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}
.btn-login, .btn-register {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-normal);
}
.btn-login {
    background: var(--primary-color);
    color: white;
}
.btn-login:hover {
    background: var(--primary-dark);
}
.btn-register {
    background: var(--bg-card, white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}
.btn-register:hover {
    background: var(--primary-color);
    color: white;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .support-grid, .contact-methods, .faq-grid {
        grid-template-columns: 1fr;
    }
    .capability-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    .quick-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .visitor-actions {
        flex-direction: column;
    }
    .visitor-actions a {
        text-align: center;
    }
}