/* ============================================================
   护工随行服务详情页 - 样式
   设计风格：深空蓝 + 科技蓝 + 鎏金
   ============================================================ */

:root {
    --deep-blue: #071D49;
    --tech-blue: #0D6EFD;
    --tech-blue-light: #3B8BFF;
    --gold: #D4AF37;
    --white: #FFFFFF;
    --bg-dark: #020C24;
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255,255,255,0.7);
    --text-muted: rgba(255,255,255,0.45);
    --border-subtle: rgba(255,255,255,0.06);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
}

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

body {
    font-family: "PingFang SC","Microsoft YaHei","HarmonyOS Sans",-apple-system,sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

/* ============================================================
   导航栏
   ============================================================ */
.header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(2,12,36,0.85); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle); padding: 0 24px;
}
.nav-container {
    max-width: 1440px; margin: 0 auto; display: flex;
    align-items: center; justify-content: space-between; height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--white); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links > a, .nav-links .nav-dropdown > a {
    font-size: 14px; color: var(--text-secondary); padding: 8px 0;
    transition: color var(--transition); white-space: nowrap;
}
.nav-links a:hover { color: var(--white); }
.nav-links a.active, .nav-links .nav-dropdown > a.active { color: var(--tech-blue-light); font-weight: 600; }
.nav-dropdown { position: relative; }
.nav-dropdown .arrow { font-size: 10px; margin-left: 4px; }
.dropdown-menu {
    position: absolute; top: 100%; left: 0; min-width: 130px;
    background: rgba(6,14,43,0.95); border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm); padding: 8px 0; opacity: 0; visibility: hidden;
    transform: translateY(8px); transition: all var(--transition); backdrop-filter: blur(20px);
}
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a { display: block; padding: 8px 20px; font-size: 13px; color: var(--text-secondary); transition: all var(--transition); }
.dropdown-menu a:hover { background: rgba(13,110,253,0.1); color: var(--tech-blue-light); }
.nav-actions { display: flex; align-items: center; gap: 16px; font-size: 13px; }
.nav-actions a { color: var(--text-secondary); transition: color var(--transition); }
.nav-actions a:hover { color: var(--white); }
.btn-register { padding: 8px 20px; background: linear-gradient(135deg, var(--tech-blue), #2563EB); color: var(--white)!important; border-radius: 20px; font-weight: 600; }

/* ============================================================
   页面主体
   ============================================================ */
.page-main { padding-top: 64px; }

/* ============================================================
   标题大图
   ============================================================ */
.hero-banner {
    position: relative; width: 100%; height: 320px; overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0; background-size: cover; background-position: center;
    transition: transform 0.5s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1.05); }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(2,12,36,0.3) 0%, rgba(2,12,36,0.75) 100%);
}
.hero-content {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 40px 24px; max-width: 1100px; margin: 0 auto;
    z-index: 2;
}
.hero-content h1 {
    font-size: 32px; font-weight: 700; color: var(--white); margin-bottom: 8px;
}
.hero-content p {
    font-size: 16px; color: var(--text-secondary);
}

/* ============================================================
   服务分类标签
   ============================================================ */
.service-tabs {
    max-width: 1100px; margin: 28px auto 20px; padding: 0 24px;
    display: flex; gap: 12px;
}
.tab-item {
    padding: 10px 28px; font-size: 14px; font-weight: 600;
    color: var(--text-secondary); background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-subtle); border-radius: 24px;
    cursor: pointer; transition: all var(--transition);
}
.tab-item:hover {
    color: var(--white); border-color: rgba(13,110,253,0.2);
    background: rgba(13,110,253,0.05);
}
.tab-item.active {
    color: var(--white); background: rgba(13,110,253,0.15);
    border-color: var(--tech-blue);
    box-shadow: 0 0 16px rgba(13,110,253,0.15);
}

/* ============================================================
   服务卡片网格
   ============================================================ */
.service-grid {
    max-width: 1100px; margin: 0 auto; padding: 0 24px 24px;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}

.svc-card {
    display: flex; gap: 16px; padding: 24px;
    background: rgba(255,255,255,0.02); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md); transition: all var(--transition);
}
.svc-card:hover {
    border-color: rgba(13,110,253,0.15);
    background: rgba(13,110,253,0.03);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.svc-card.hidden { display: none; }

.svc-icon {
    flex-shrink: 0; width: 64px; height: 64px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(13,110,253,0.08); border-radius: var(--radius-sm);
}
.svc-text { flex: 1; min-width: 0; }
.svc-text h4 { font-size: 15px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.svc-text p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   平台承诺
   ============================================================ */
.promise-section {
    max-width: 1100px; margin: 0 auto; padding: 0 24px 60px;
}
.promise-inner {
    padding: 28px; background: rgba(212,175,55,0.04);
    border: 1px solid rgba(212,175,55,0.1); border-radius: var(--radius-md);
    text-align: center;
}
.promise-title {
    font-size: 18px; font-weight: 700; color: var(--gold);
    margin-bottom: 20px;
}
.promise-list {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.promise-item {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px; font-size: 14px; color: var(--text-secondary);
    background: rgba(255,255,255,0.02); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm); transition: all var(--transition);
}
.promise-item:hover {
    border-color: rgba(212,175,55,0.2); background: rgba(212,175,55,0.05);
}
.promise-check {
    display: inline-flex; align-items: center; justify-content: center;
    width: 22px; height: 22px; font-size: 13px; font-weight: 700;
    color: var(--gold); background: rgba(212,175,55,0.12);
    border-radius: 50%; flex-shrink: 0;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
    .service-grid { grid-template-columns: repeat(2, 1fr); }
    .promise-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions a:not(.btn-register) { display: none; }
    .service-grid { grid-template-columns: 1fr; }
    .promise-list { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 24px; }
    .service-tabs { overflow-x: auto; }
    .tab-item { flex-shrink: 0; white-space: nowrap; }
}