/* ============================================================
   核心优势 - 独立内页
   设计风格：Apple极简 + Tesla流体 + 康养质感 + 轻奢新中式
   主色调：深空蓝 #071D49 / 科技蓝 #0D6EFD / 银河紫 #4A3AFF / 鎏金 #D4AF37
   ============================================================ */

:root {
    --deep-blue: #071D49;
    --tech-blue: #0D6EFD;
    --tech-blue-light: #3B8BFF;
    --galaxy-purple: #4A3AFF;
    --gold: #D4AF37;
    --gold-light: #F0D060;
    --white: #FFFFFF;
    --bg-dark: #020C24;
    --bg-section: #060E2B;
    --bg-card: rgba(255,255,255,0.025);
    --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);
    --border-medium: rgba(255,255,255,0.12);
    --glass-bg: rgba(255,255,255,0.04);
    --glass-border: rgba(255,255,255,0.08);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 40px rgba(13,110,253,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans", "Source Han Sans CN", -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -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; }

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 60px;
}

/* ============================================================
   模块1：全屏Banner
   ============================================================ */
.hero-banner {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: radial-gradient(ellipse at 30% 50%, #0A1E4A 0%, #020C24 70%);
}

#starCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(13,110,253,0.06), transparent 60%);
    z-index: 2;
}

.back-home {
    position: absolute;
    top: 32px;
    right: 48px;
    z-index: 20;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    font-size: 14px;
    color: var(--text-secondary);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 24px;
    transition: all var(--transition);
    backdrop-filter: blur(10px);
}

.back-home:hover {
    color: var(--white);
    border-color: rgba(255,255,255,0.35);
    background: rgba(255,255,255,0.06);
}

.hero-content {
    position: relative;
    z-index: 10;
    padding: 0 80px;
    max-width: 700px;
}

.hero-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 5px;
    color: var(--tech-blue);
    margin-bottom: 24px;
    padding: 5px 14px;
    border: 1px solid rgba(13,110,253,0.25);
    border-radius: 4px;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #FFFFFF 0%, #A8D0FF 50%, #FFFFFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 640px;
    margin-bottom: 24px;
}

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

.hero-assurance span {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    white-space: nowrap;
}

.hero-scene {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 50%;
    height: 70%;
    z-index: 3;
}

.scene-image {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    border-top-left-radius: 40px;
    overflow: hidden;
    position: relative;
}

.scene-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to left, transparent 50%, var(--bg-dark) 100%),
                linear-gradient(to top, var(--bg-dark) 0%, transparent 40%);
}

.scene-caption {
    position: absolute;
    bottom: 24px;
    right: 32px;
    font-size: 12px;
    color: var(--text-muted);
    z-index: 4;
    letter-spacing: 1px;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 80px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 12px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--tech-blue), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

.hero-scroll span {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 3px;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ============================================================
   通用区块标题
   ============================================================ */
.section-header-center {
    text-align: center;
    margin-bottom: 72px;
}

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--tech-blue);
    margin-bottom: 16px;
    padding: 4px 12px;
    border: 1px solid rgba(13,110,253,0.2);
    border-radius: 4px;
}

.section-main-title {
    font-size: 46px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-main-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

/* ============================================================
   模块2：品牌理念介绍
   ============================================================ */
.section-intro {
    padding: 120px 0;
    background: var(--bg-dark);
}

/* ============================================================
   模块3：六大核心优势
   ============================================================ */
.section-advantages {
    padding: 120px 0;
    background: var(--bg-section);
    position: relative;
}

.section-advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(13,110,253,0.2), transparent);
}

.adv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.adv-card {
    position: relative;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 0;
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    backdrop-filter: blur(10px);
    min-height: 280px;
}

.adv-card:hover {
    transform: translateY(-6px);
    border-color: rgba(13,110,253,0.2);
    box-shadow: var(--shadow-glow), 0 16px 48px rgba(0,0,0,0.5);
}

.adv-card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 30%, rgba(13,110,253,0.04), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.adv-card:hover .adv-card-glow { opacity: 1; }

.adv-card-image {
    width: 200px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.adv-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(13,110,253,0.3);
    transition: all var(--transition);
}

.adv-img-placeholder.emergency {
    background: linear-gradient(180deg, rgba(220,38,38,0.08), rgba(220,38,38,0.02));
}

.adv-img-placeholder.nurse {
    background: linear-gradient(180deg, rgba(13,110,253,0.08), rgba(13,110,253,0.02));
}

.adv-img-placeholder.pace {
    background: linear-gradient(180deg, rgba(16,185,129,0.08), rgba(16,185,129,0.02));
}

.adv-img-placeholder.culture {
    background: linear-gradient(180deg, rgba(212,175,55,0.08), rgba(212,175,55,0.02));
}

.adv-img-placeholder.butler {
    background: linear-gradient(180deg, rgba(74,58,255,0.08), rgba(74,58,255,0.02));
}

.adv-card:hover .adv-img-placeholder svg {
    transform: scale(1.1);
    transition: transform var(--transition);
}

.adv-card-content {
    flex: 1;
    padding: 36px 32px;
    position: relative;
}

.adv-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 56px;
    font-weight: 800;
    color: rgba(255,255,255,0.03);
    pointer-events: none;
    line-height: 1;
}

.adv-card-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.4;
}

.adv-features {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.adv-features li {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.check {
    color: var(--tech-blue-light);
    font-weight: 600;
    font-size: 12px;
}

.adv-img-note {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-top: 8px;
    font-style: italic;
}

/* ============================================================
   模块4：八大适老贴心细节
   ============================================================ */
.section-details {
    padding: 120px 0;
    background: var(--bg-dark);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.detail-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.detail-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--tech-blue), var(--galaxy-purple), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.detail-card:hover::before { opacity: 1; }

.detail-card:hover {
    transform: translateY(-6px);
    border-color: rgba(13,110,253,0.2);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
    background: rgba(13,110,253,0.04);
}

.detail-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(13,110,253,0.08);
    color: var(--tech-blue-light);
    border: 1px solid rgba(13,110,253,0.15);
    transition: all var(--transition);
}

.detail-card:hover .detail-icon {
    background: rgba(13,110,253,0.15);
    box-shadow: 0 0 30px rgba(13,110,253,0.2);
}

.detail-card h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 10px;
}

.detail-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================================
   模块5：服务流程
   ============================================================ */
.section-process {
    padding: 120px 0;
    background: var(--bg-section);
    position: relative;
}

.section-process::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(13,110,253,0.2), transparent);
}

.process-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: nowrap;
    padding: 40px 0;
}

.process-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.node-circle {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13,110,253,0.08);
    border: 2px solid rgba(13,110,253,0.2);
    color: var(--tech-blue-light);
    transition: all var(--transition);
    position: relative;
}

.node-circle::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 1px dashed rgba(13,110,253,0.15);
    animation: nodeSpin 20s linear infinite;
}

@keyframes nodeSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.process-node:hover .node-circle {
    background: rgba(13,110,253,0.15);
    border-color: var(--tech-blue);
    box-shadow: 0 0 30px rgba(13,110,253,0.3);
    transform: scale(1.08);
}

.node-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    white-space: nowrap;
    transition: color var(--transition);
}

.process-node:hover .node-label { color: var(--white); }

.process-connector {
    display: flex;
    align-items: center;
    width: 100px;
    flex-shrink: 0;
}

.connector-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(13,110,253,0.2), rgba(13,110,253,0.4), rgba(13,110,253,0.2));
    position: relative;
}

.connector-arrow {
    color: rgba(13,110,253,0.5);
    font-size: 16px;
    margin-left: 4px;
}

/* ============================================================
   模块6：底部CTA
   ============================================================ */
.section-cta {
    position: relative;
    padding: 140px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(2,12,36,0.85) 0%, rgba(7,29,73,0.9) 50%, rgba(2,12,36,0.95) 100%);
}

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

.cta-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.4;
    margin-bottom: 48px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 40px;
    font-size: 17px;
    font-weight: 600;
    border-radius: 32px;
    transition: all var(--transition);
}

.cta-primary {
    background: linear-gradient(135deg, var(--tech-blue), #2563EB);
    color: var(--white);
    box-shadow: 0 8px 32px rgba(13,110,253,0.35);
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 48px rgba(13,110,253,0.5);
}

.cta-gold {
    background: transparent;
    border: 2px solid var(--gold);
    color: var(--gold);
    position: relative;
    overflow: hidden;
}

.cta-gold::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(212,175,55,0.15), rgba(212,175,55,0.05));
    opacity: 0;
    transition: opacity var(--transition);
}

.cta-gold:hover {
    transform: translateY(-3px);
    border-color: var(--gold-light);
    box-shadow: 0 8px 32px rgba(212,175,55,0.25);
}

.cta-gold:hover::before { opacity: 1; }

/* ============================================================
   页脚
   ============================================================ */
.footer {
    background: #020816;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 80px 0 0;
}

.footer-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 60px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.footer-brand { flex: 0 0 260px; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.footer-logo span { font-size: 20px; font-weight: 700; color: var(--white); }

.footer-brand p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.footer-tel {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
}

.footer-links { display: flex; gap: 60px; flex: 1; }

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 18px;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer-col a:hover { color: var(--tech-blue-light); }

.footer-qr { flex-shrink: 0; }

.qr-item { text-align: center; }

.qr-code {
    margin-bottom: 8px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    display: inline-block;
}

.qr-item span {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
}

.footer-bottom {
    text-align: center;
    padding: 32px 0;
    font-size: 13px;
    color: var(--text-muted);
}

.footer-copy { margin-top: 8px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1280px) {
    .container { padding: 0 40px; }
    .hero-content { padding: 0 40px; }
    .hero-title { font-size: 48px; }
    .hero-scene { width: 45%; }
    .adv-grid { grid-template-columns: 1fr; }
    .details-grid { grid-template-columns: repeat(2, 1fr); }
    .process-flow { flex-wrap: wrap; gap: 24px; justify-content: center; }
    .process-connector { display: none; }
    .footer-top { flex-wrap: wrap; gap: 40px; }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .hero-scene { display: none; }
    .hero-content { padding: 0 24px; }
    .back-home { top: 16px; right: 16px; }
    .section-main-title { font-size: 28px; }
    .section-main-desc { font-size: 16px; }
    .adv-card { flex-direction: column; }
    .adv-card-image { width: 100%; height: 160px; }
    .details-grid { grid-template-columns: 1fr; }
    .cta-title { font-size: 26px; }
    .footer-links { flex-wrap: wrap; gap: 30px; }
}