/* ============================================
   垚博企管 - 企业官网样式
   设计理念：深色高级感 + 金色点缀 + 通透层次
   ============================================ */

/* ---------- 基础变量 ---------- */
:root {
    --primary-dark: #0b1424;
    --primary: #132044;
    --primary-light: #1e3470;
    --accent-gold: #c9a84c;
    --accent-gold-light: #e8c75a;
    --accent-gold-dark: #a8882e;
    --bg-dark: #080e1a;
    --bg-card: #ffffff;
    --bg-section: #f8f9fb;
    --bg-section-alt: #f8f9fb;
    --text-primary: #1a1a2e;
    --text-secondary: #555770;
    --text-light: #8888a0;
    --text-white: #ffffff;
    --text-muted: rgba(255,255,255,0.6);
    --border-light: #e8eaf0;
    --shadow-sm: 0 2px 8px rgba(11,20,36,0.06);
    --shadow-md: 0 8px 30px rgba(11,20,36,0.10);
    --shadow-lg: 0 20px 60px rgba(11,20,36,0.15);
    --shadow-glow: 0 4px 20px rgba(201,168,76,0.3);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
                 "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-dark);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   导航栏 — 深色通透质感
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(22,30,46,0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.07);
    transition: background var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-white);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 10px;
    background: rgba(255,255,255,0.92);
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
    transition: all var(--transition);
}

.logo:hover .logo-badge {
    background: #fff;
    box-shadow: 0 4px 20px rgba(201,168,76,0.25);
}

.logo-img {
    height: 34px;
    width: auto;
    display: block;
}

/* 导航下拉菜单 */
.nav-dropdown {
    position: relative;
}

.nav-arrow {
    font-size: 10px;
    margin-left: 4px;
    opacity: 0.5;
    transition: all var(--transition);
}

.nav-dropdown:hover .nav-arrow {
    opacity: 1;
    transform: rotate(180deg);
}

.nav-submenu {
    position: absolute;
    top: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(26,32,46,0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    padding: 8px 0;
    min-width: 140px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    box-shadow: 0 12px 40px rgba(0,0,0,0.35);
    pointer-events: none;
}

/* 用伪元素填补hover间隙 */
.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 12px;
}

.nav-dropdown:hover .nav-submenu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.nav-submenu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-submenu li a:hover {
    color: var(--text-white);
    background: rgba(255,255,255,0.06);
}

/* CTA 导航按钮 - 金色文字突出，不加框 */
.nav-cta {
    color: var(--accent-gold-light) !important;
    font-weight: 600;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary-dark);
    font-weight: 800;
}

/* 页脚logo */
.footer-logo-img {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    object-fit: contain;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 0;
    white-space: nowrap;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    padding: 10px 13px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 0.2px;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: var(--accent-gold);
    border-radius: 2px;
    transition: transform var(--transition);
}

.nav-link:hover {
    color: var(--text-white);
    background: rgba(255,255,255,0.05);
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-link.active {
    color: var(--accent-gold-light);
    background: rgba(201,168,76,0.08);
}

.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
    background: var(--accent-gold-light);
}

/* ============================================
   Hero 区域 — 全屏沉浸式
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, #0b1424 0%, #111d38 30%, #152248 60%, #1a2850 100%);
    position: relative;
    overflow: hidden;
    padding: 120px 0 120px;
}

/* 底部渐变衔接 */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 160px;
    background: linear-gradient(180deg, transparent 0%, rgba(248,249,251,0.25) 40%, #f8f9fb 100%);
    pointer-events: none;
    z-index: 0;
}

/* 背景装饰网格 */
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(201,168,76,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201,168,76,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* 光晕效果 */
.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
}

.hero-glow-1 {
    top: -200px;
    right: -100px;
    background: radial-gradient(circle, #c9a84c, transparent);
}

.hero-glow-2 {
    bottom: -200px;
    left: -100px;
    background: radial-gradient(circle, #4a6cf7, transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border: 1px solid rgba(201,168,76,0.3);
    border-radius: 50px;
    font-size: 12px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-gold-light);
    margin-bottom: 28px;
    background: rgba(201,168,76,0.06);
}

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 8px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 24px;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-desc {
    font-size: 16px;
    line-height: 1.9;
    color: rgba(255,255,255,0.55);
    max-width: 620px;
    margin: 0 auto 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.hero-stat-item {
    text-align: center;
}

.hero-stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-gold-light);
    letter-spacing: -1px;
}

.hero-stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    margin-top: 4px;
    letter-spacing: 1px;
}

/* ============================================
   按钮样式 — 精致高级
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    color: var(--primary-dark);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: rgba(255,255,255,0.06);
    color: var(--text-white);
    border: 1px solid rgba(255,255,255,0.15);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--accent-gold-light);
    border: 1.5px solid var(--accent-gold);
}

.btn-outline:hover:not(:disabled) {
    background: rgba(201,168,76,0.1);
    transform: translateY(-2px);
}

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

/* ============================================
   通用区块
   ============================================ */
.section {
    padding: 100px 0;
    background: #f8f9fb;
}

.section-alt {
    padding: 100px 0;
    background: #f8f9fb;
}

.section-dark {
    background: #1a2030;
    color: var(--text-white);
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(201,168,76,0.1);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-gold-dark);
    letter-spacing: 2px;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.section-dark .section-title {
    color: var(--text-white);
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.8;
}

.section-dark .section-desc {
    color: var(--text-muted);
}

/* ============================================
   关于我们 — 精致卡片
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.about-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 44px 32px;
    text-align: center;
    box-shadow: 0 1px 4px rgba(11,20,36,0.04);
    transition: all var(--transition);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light));
    border-radius: 0 0 3px 3px;
    opacity: 0.4;
    transition: all var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.about-card:hover::before {
    opacity: 1;
    left: 0;
    right: 0;
    height: 3px;
}

.about-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, rgba(201,168,76,0.15), rgba(201,168,76,0.05));
    color: var(--accent-gold-dark);
    border: 1px solid rgba(201,168,76,0.2);
    letter-spacing: 0;
    transition: all var(--transition);
}

.about-card:hover .about-icon {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    color: #fff;
    border-color: transparent;
    box-shadow: 0 6px 20px rgba(201,168,76,0.35);
    transform: translateY(-2px);
}

/* 团队头像 — 专业首字母风格 */
.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin: 0 auto 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    letter-spacing: 0;
    transition: all var(--transition);
}

.about-card:hover .team-avatar {
    transform: scale(1.08);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

/* 有真实照片时使用 team-photo */
.team-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 16px;
    border: 3px solid var(--accent-gold);
    box-shadow: 0 4px 16px rgba(201,168,76,0.2);
    display: block;
    transition: all var(--transition);
}

.about-card:hover .team-photo {
    box-shadow: 0 8px 24px rgba(201,168,76,0.35);
    transform: scale(1.08);
}

/* 流程图标 */
.process-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 16px;
    display: block;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all var(--transition);
}

.about-card:hover .process-icon {
    transform: scale(1.08);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

/* 导航卡片 - 作为链接的卡片 */
.nav-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.nav-card:hover h3 {
    color: var(--accent-gold-dark);
}

.about-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.about-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 服务卡片链接到独立页面 */
a.service-link-card {
    text-decoration: none;
    color: inherit;
    display: block;
}
a.service-link-card:hover {
    text-decoration: none;
    color: inherit;
}
.card-arrow-link {
    display: inline-block;
    font-size: 14px;
    margin-left: 6px;
    transition: transform 0.3s ease;
    color: var(--accent-gold);
}
a.service-link-card:hover .card-arrow-link {
    transform: translateX(4px);
}
.card-link-text {
    display: block;
    margin-top: 14px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-gold);
    opacity: 0;
    transition: opacity 0.3s ease;
}
a.service-link-card:hover .card-link-text {
    opacity: 1;
}

/* 认证块移动端适配 */
@media (max-width: 640px) {
    .cert-block {
        flex-direction: column;
        text-align: center;
    }
    .cert-block > div:first-child {
        flex: auto;
        margin: 0 auto;
    }
}

/* ============================================
   发展历程 — 升级版时间线
   ============================================ */
.timeline {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-gold), rgba(201,168,76,0.1));
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    gap: 32px;
    margin-bottom: 36px;
    position: relative;
}

.timeline-dot {
    width: 56px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.timeline-dot-circle {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-gold);
    border: 4px solid var(--bg-section);
    box-shadow: 0 0 0 2px var(--accent-gold);
    margin-top: 6px;
}

.timeline-year {
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-gold-dark);
    margin-top: 6px;
    letter-spacing: 1px;
}

.timeline-content {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline-content h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 700;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   联系信息
   ============================================ */
.contact-section {
    background: #f2f3f7;
    color: var(--text-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.contact-text {
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-text strong {
    color: var(--text-primary);
    display: block;
    font-size: 13px;
    margin-bottom: 2px;
    letter-spacing: 0.5px;
}

/* ============================================
   证书查询页面
   ============================================ */
.page-hero {
    background: linear-gradient(160deg, #0b1424 0%, #111d38 40%, #152248 70%, #1a2850 100%);
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(201,168,76,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201,168,76,0.025) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* 底部渐变衔接 */
.page-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, transparent 0%, rgba(248,249,251,0.25) 40%, #f8f9fb 100%);
    pointer-events: none;
    z-index: 1;
}

.page-hero-content {
    position: relative;
    z-index: 2;
}

.page-hero h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* 查询表单 — 精美卡片 */
.query-wrapper {
    max-width: 560px;
    margin: -40px auto 0;
    position: relative;
    z-index: 2;
}

.query-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: all var(--transition);
    outline: none;
    background: #f8f9fc;
    color: var(--text-primary);
}

.form-input:focus {
    border-color: var(--accent-gold);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(201,168,76,0.1);
}

.form-input::placeholder {
    color: #b0b8c8;
}

.query-result-area {
    max-width: 700px;
    margin: 40px auto 0;
}

/* ============================================
   结果样式
   ============================================ */
.result-card {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.result-header {
    display: flex;
    gap: 16px;
    padding: 24px 28px;
    align-items: flex-start;
}

.result-icon {
    font-size: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.result-header h3 {
    font-size: 17px;
    margin-bottom: 4px;
}

.result-header p {
    font-size: 14px;
    opacity: 0.85;
}

.result-success {
    background: linear-gradient(135deg, #e8f5e9, #e0f2e0);
    border-bottom: 1px solid #c8e6c9;
    color: #2e7d32;
}

.result-error {
    background: linear-gradient(135deg, #fbe9e7, #fce4e0);
    border-bottom: 1px solid #f5c6c0;
    color: #c62828;
}

.result-body {
    padding: 28px;
    background: var(--bg-card);
}

/* 证书卡片 */
.cert-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.cert-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
    cursor: default;
}

.cert-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--accent-gold);
    transform: translateX(4px);
}

.cert-info h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.cert-info p {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 2px;
}

.cert-tag {
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

.tag-valid {
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    color: #2e7d32;
}

.tag-expired {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    color: #e65100;
}

.tag-revoked {
    background: linear-gradient(135deg, #fbe9e7, #ffcdd2);
    color: #c62828;
}

/* 提示框 */
.tips {
    max-width: 560px;
    margin: 32px auto 0;
    background: linear-gradient(135deg, rgba(201,168,76,0.06), rgba(201,168,76,0.02));
    border-radius: var(--radius-sm);
    padding: 24px 28px;
    border: 1px solid rgba(201,168,76,0.15);
}

.tips h4 {
    color: var(--accent-gold-dark);
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.tips ul {
    list-style: none;
    padding: 0;
}

.tips li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

.tips li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
}

/* ============================================
   加载动画
   ============================================ */
.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    width: 44px;
    height: 44px;
    margin: 0 auto 16px;
    border: 3px solid rgba(201,168,76,0.15);
    border-top: 3px solid var(--accent-gold);
    border-radius: 50%;
    animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading p {
    color: var(--text-light);
    font-size: 14px;
}

/* ============================================
   考试区域 — 全功能考试系统
   ============================================ */
.exam-wrapper {
    max-width: 720px;
    margin: 0 auto;
}

/* 考试信息栏 */
.exam-bar {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.exam-bar-item {
    flex: 1;
    min-width: 160px;
}

.exam-bar-item label {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 4px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.exam-bar-item .form-input {
    background: #f8f9fc;
}

.exam-stats {
    text-align: center;
    font-size: 14px;
    color: var(--text-secondary);
}

.exam-stats strong {
    color: var(--accent-gold-dark);
    font-size: 18px;
}

/* 进度条 */
.exam-progress {
    margin-bottom: 28px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.progress-bar {
    height: 6px;
    background: var(--border-light);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light));
    border-radius: 3px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 题目卡片 */
.question-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--transition);
}

.question-card:hover {
    box-shadow: var(--shadow-md);
}

.question-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.question-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
    flex-shrink: 0;
}

.question-tag {
    padding: 3px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.tag-basic {
    background: rgba(74,108,247,0.1);
    color: #4a6cf7;
}

.tag-professional {
    background: rgba(201,168,76,0.1);
    color: var(--accent-gold-dark);
}

.tag-iso {
    background: rgba(39,174,96,0.1);
    color: #27ae60;
}

.tag-default {
    background: rgba(149,165,166,0.1);
    color: #7f8c8d;
}

.question-score {
    margin-left: auto;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 500;
}

.question-content {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.8;
    font-weight: 500;
}

/* 选项样式 — 高级卡片式 */
.question-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    user-select: none;
}

.option-item:hover {
    border-color: var(--accent-gold);
    background: rgba(201,168,76,0.03);
}

.option-item.selected {
    border-color: var(--accent-gold);
    background: linear-gradient(135deg, rgba(201,168,76,0.08), rgba(201,168,76,0.03));
}

.option-item input[type="radio"] {
    display: none;
}

.option-letter {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-section);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    flex-shrink: 0;
    transition: all var(--transition);
}

.option-item.selected .option-letter {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    color: var(--primary-dark);
}

.option-text {
    font-size: 15px;
    color: var(--text-primary);
    line-height: 1.5;
}

/* 提交区 */
.exam-footer {
    max-width: 720px;
    margin: 32px auto 0;
    text-align: center;
}

/* ============================================
   成绩展示 — 精美成绩单
   ============================================ */
.score-board {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 28px 0 32px;
}

.score-block {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.score-block .score-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 4px;
}

.score-block .score-lbl {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.score-total .score-num { color: var(--accent-gold-dark); }
.score-correct .score-num { color: #2e7d32; }
.score-wrong .score-num { color: #c62828; }
.score-rate .score-num { color: #4a6cf7; }

/* 答题详情 */
.detail-list {
    margin-top: 24px;
}

.detail-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.detail-card {
    padding: 18px 22px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    border: 1px solid var(--border-light);
    background: var(--bg-card);
    border-left: 4px solid #e0e0e0;
}

.detail-card.detail-correct {
    border-left-color: #2e7d32;
    background: linear-gradient(135deg, #f1f8f2, #fff);
}

.detail-card.detail-wrong {
    border-left-color: #c62828;
    background: linear-gradient(135deg, #fef0ef, #fff);
}

.detail-card .d-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.detail-card .d-question {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.7;
}

.detail-card .d-answer p {
    font-size: 13px;
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.detail-card .d-answer .correct {
    color: #2e7d32;
    font-weight: 700;
}

.detail-card .d-answer .wrong {
    color: #c62828;
    font-weight: 700;
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: #161e2e;
    color: rgba(255,255,255,0.55);
    padding: 40px 0 32px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    color: rgba(255,255,255,0.6);
}

.footer-brand .mini-logo {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-dark));
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--primary-dark);
    font-weight: 800;
}

.footer-text {
    font-size: 13px;
    text-align: right;
}

.footer-text p {
    margin-bottom: 2px;
}

/* ============================================
   动画辅助
   ============================================ */
.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

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

.slide-up {
    animation: slideUp 0.6s ease-out forwards;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   实景照片画廊 — 轻盈优雅风格
   ============================================ */

/* 全宽实景条 */
.photo-strip {
    position: relative;
    width: 100%;
    max-height: 320px;
    overflow: hidden;
    background: #f8f9fb;
}

.photo-strip img {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    object-position: center center;
    display: block;
}

/* 用半透明遮罩让图片颜色与整站背景自然融合 */
.photo-strip::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(248,249,251,0.24);
    pointer-events: none;
    transition: opacity 0.6s ease;
}

.photo-strip:hover::after {
    opacity: 0;
}

.photo-strip-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.photo-strip-label {
    font-size: 14px;
    letter-spacing: 4px;
    color: rgba(26,26,46,0.4);
    text-transform: uppercase;
}

/* 照片画廊网格 */
.photo-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

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

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

/* 照片卡片 */
.photo-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    background: #fff;
    border: 1px solid var(--border-light);
    box-shadow: 0 1px 4px rgba(11,20,36,0.04);
    transition: all var(--transition);
    aspect-ratio: 16 / 10;
}

.photo-card.square {
    aspect-ratio: 1 / 1;
}

.photo-card.wide {
    aspect-ratio: 21 / 9;
}

.photo-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 轻量渐变叠加层 */
.photo-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        transparent 60%,
        rgba(11,20,36,0.15) 100%
    );
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
    z-index: 1;
}

/* 金色边框光晕 */
.photo-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 2px solid transparent;
    transition: all var(--transition);
    z-index: 2;
    pointer-events: none;
}

.photo-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(11,20,36,0.12), 0 0 0 1px rgba(201,168,76,0.2);
    border-color: rgba(201,168,76,0.3);
}

.photo-card:hover img {
    transform: scale(1.04);
}

.photo-card:hover::after {
    opacity: 1;
}

.photo-card:hover::before {
    border-color: rgba(201,168,76,0.2);
}

/* 查看图标 — hover 时显示 */
.photo-card-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(201,168,76,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 300;
    color: #fff;
    opacity: 0;
    transition: all var(--transition);
    z-index: 3;
    pointer-events: none;
}

.photo-card:hover .photo-card-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

/* 画廊区块 */
.gallery-section {
    background: #f8f9fb;
    position: relative;
    overflow: hidden;
}

.gallery-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
}

/* 照片画廊响应式 */
@media (max-width: 900px) {
    .photo-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .photo-gallery.col-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .photo-strip { max-height: 220px; }
    .photo-strip img { max-height: 200px; }
}

@media (max-width: 640px) {
    .photo-gallery,
    .photo-gallery.col-2,
    .photo-gallery.col-4 {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .photo-strip { max-height: 160px; }
    .photo-strip img { max-height: 140px; }
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 900px) {
    .hero h1 { font-size: 36px; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .contact-grid { grid-template-columns: 1fr; }
    .score-board { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .nav-container { height: 60px; }
    .nav-link { padding: 8px 12px; font-size: 13px; }
    .hero { padding: 100px 0 60px; }
    .hero h1 { font-size: 28px; }
    .hero-subtitle { font-size: 16px; }
    .hero-stats { display: none; }
    .section { padding: 60px 0; }
    .section-title { font-size: 24px; }
    .query-form { padding: 24px; }
    .score-board { grid-template-columns: repeat(2, 1fr); }
    .score-block { padding: 16px 12px; }
    .score-block .score-num { font-size: 24px; }
    .exam-bar { flex-direction: column; }
    .exam-bar-item { width: 100%; }
    .footer-inner { flex-direction: column; text-align: center; }
    .footer-text { text-align: center; }
}

/* ============================================
   课程平台样式
   ============================================ */

/* 课程卡片链接 */
a.course-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}
a.course-card-link:hover {
    text-decoration: none;
    color: inherit;
}

/* 课程封面占位 */
.course-cover-placeholder {
    background: linear-gradient(135deg, rgba(201,168,76,0.08), rgba(201,168,76,0.02));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 160px;
    border: 1px dashed rgba(201,168,76,0.25);
}
.course-cover-icon {
    font-size: 40px;
    opacity: 0.6;
}

/* 课程价格 */
.course-price-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.course-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-gold);
}
.course-original-price {
    font-size: 13px;
    color: var(--text-light);
    text-decoration: line-through;
}

/* 认证表单 */
.auth-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 36px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text-primary);
    background: #fff;
    transition: all var(--transition);
    box-sizing: border-box;
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(201,168,76,0.1);
}
.form-error {
    background: rgba(231,76,60,0.06);
    color: #c0392b;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    border: 1px solid rgba(231,76,60,0.15);
}

/* 章节列表 */
.chapter-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.chapter-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all var(--transition);
    border: 1px solid transparent;
    background: rgba(248,249,251,0.5);
}
.chapter-item:hover {
    background: rgba(201,168,76,0.05);
    border-color: rgba(201,168,76,0.15);
    color: var(--text-primary);
    text-decoration: none;
}
.chapter-active {
    background: rgba(201,168,76,0.08);
    border-color: rgba(201,168,76,0.3);
    color: var(--text-primary);
    font-weight: 600;
}
.chapter-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(201,168,76,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-gold-dark);
    flex-shrink: 0;
}
.chapter-active .chapter-num {
    background: var(--accent-gold);
    color: #fff;
}
.chapter-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.chapter-duration {
    font-size: 12px;
    color: var(--text-light);
    flex-shrink: 0;
}
.chapter-free-tag {
    font-size: 11px;
    background: rgba(39,174,96,0.1);
    color: #27ae60;
    padding: 2px 6px;
    border-radius: 3px;
    flex-shrink: 0;
}

/* 支付弹窗 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}
.modal-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 32px;
    max-width: 420px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

/* 订单卡片 */
.order-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}
.order-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}
.order-course-title {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
}
.order-badge {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 600;
    white-space: nowrap;
}
.order-badge-paid {
    background: rgba(39,174,96,0.1);
    color: #27ae60;
}
.order-badge-pending {
    background: rgba(243,156,18,0.1);
    color: #e67e22;
}
.order-badge-cancelled {
    background: rgba(149,165,166,0.1);
    color: #95a5a6;
}
.order-info {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 12px;
}
.order-actions {
    display: flex;
    gap: 8px;
}

/* 面包屑 */
.page-hero-breadcrumb {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.page-hero-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
}
.page-hero-breadcrumb a:hover {
    color: var(--accent-gold-light);
}

/* 内容块 */
.content-block {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}
.content-block p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 2;
}

/* 流程步骤编号 */
.process-step-number {
    font-size: 32px;
    font-weight: 800;
    color: rgba(201,168,76,0.2);
    margin-bottom: 8px;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    color: var(--primary-dark);
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(201,168,76,0.4);
    text-decoration: none;
    color: var(--primary-dark);
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    text-decoration: none;
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 课程卡片价格 */
.course-price-text {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}
.price-current {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-gold);
}
.price-original {
    font-size: 13px;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: 8px;
}