/* ================================================================
   Shared Design System — 孝心天下医养健康平台
   ================================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --color-primary: #D32F2F;
    --color-primary-light: #EF5350;
    --color-primary-dark: #B71C1C;
    --color-accent: #F4A261;
    --color-bg: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-text: #1A1A2E;
    --color-text-light: #64748B;
    --color-border: #E5E7EB;
    --color-success: #059669;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.13);
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --nav-height: 64px;
    --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 全局重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
    font-family:'Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
    color:var(--color-text);line-height:1.8;overflow-x:hidden;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}

/* ---------- 可访问性 ---------- */
:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:4px;}
.skip-to-content{
    position:absolute;top:-100px;left:16px;z-index:10000;
    background:var(--color-primary);color:#fff;padding:10px 20px;
    border-radius:var(--radius-full);font-weight:700;text-decoration:none;
    transition:top 0.3s;
}
.skip-to-content:focus{top:16px;}

/* ---------- 导航栏 ---------- */
.navbar{
    position:fixed;top:0;left:0;right:0;z-index:1000;
    height:var(--nav-height);
    background:rgba(255,255,255,0.96);backdrop-filter:blur(14px);
    box-shadow:0 2px 20px rgba(0,0,0,0.08);
    transition:all 0.3s ease;
    display:flex;align-items:center;
}
.nav-link{
    color:#333;font-size:0.9rem;font-weight:500;
    transition:color 0.3s;text-decoration:none;
}
.nav-link:hover{color:var(--color-primary);}
.nav-link.active{color:var(--color-primary);font-weight:700;}

/* ---------- 按钮 ---------- */
.btn-primary{
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    color:#fff;padding:14px 32px;border-radius:var(--radius-full);
    font-weight:700;transition:all var(--transition-base);border:none;
    cursor:pointer;font-size:16px;display:inline-flex;
    align-items:center;gap:8px;text-decoration:none;
    box-shadow:0 6px 20px rgba(211,47,47,0.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(211,47,47,0.5);}
.btn-primary:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;}

.btn-outline{
    background:transparent;color:#fff;padding:14px 36px;
    border-radius:var(--radius-full);font-weight:700;transition:all var(--transition-base);
    border:2px solid #fff;cursor:pointer;font-size:16px;
    display:inline-flex;align-items:center;gap:8px;text-decoration:none;
}
.btn-outline:hover{background:#fff;color:var(--color-primary);}
.btn-outline:focus-visible{outline:2px solid #fff;outline-offset:2px;}

.btn-white{
    background:#fff;color:var(--color-primary);padding:14px 36px;
    border-radius:var(--radius-full);font-weight:700;border:none;cursor:pointer;
    font-size:16px;display:inline-flex;align-items:center;gap:8px;
    text-decoration:none;transition:all var(--transition-base);
}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,0,0,0.18);}
.btn-white:focus-visible{outline:2px solid #fff;outline-offset:2px;}

/* ---------- Page Hero ---------- */
.page-hero{
    margin-top:var(--nav-height);
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    color:#fff;text-align:center;padding:80px 0 60px;
    position:relative;overflow:hidden;
}
.page-hero::before{
    content:'';position:absolute;width:400px;height:400px;border-radius:50%;
    background:rgba(255,255,255,0.06);top:-150px;right:-80px;
}

/* ---------- 卡片 ---------- */
.card-base{
    background:#fff;border-radius:var(--radius-lg);padding:2rem;
    box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,0.04);
    transition:all var(--transition-base);
    position:relative;overflow:hidden;
}
.card-base::before{
    content:'';position:absolute;top:0;left:0;right:0;height:4px;
    background:linear-gradient(90deg,var(--color-primary),var(--color-primary-light));
    opacity:0;transition:opacity var(--transition-base);
}
.card-base:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(211,47,47,0.12);}
.card-base:hover::before{opacity:1;}

.card-hover{
    background:#fff;border-radius:var(--radius-lg);padding:2rem;
    box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,0.04);
    transition:all var(--transition-base);position:relative;overflow:hidden;
}
.card-hover::after{
    content:'';position:absolute;left:0;top:0;bottom:0;width:4px;
    background:linear-gradient(180deg,var(--color-primary),var(--color-primary-light));
    transform:scaleY(0);transform-origin:top;
    transition:transform var(--transition-base);
}
.card-hover:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(211,47,47,0.12);}
.card-hover:hover::after{transform:scaleY(1);}

/* ---------- 装饰渐变光晕 ---------- */
.glow-tl{
    position:absolute;width:55%;height:70%;top:-15%;left:-10%;
    background:radial-gradient(ellipse at 30% 40%,rgba(211,47,47,0.06) 0%,transparent 70%);
    pointer-events:none;z-index:0;
}
.glow-br{
    position:absolute;width:50%;height:60%;bottom:-10%;right:-8%;
    background:radial-gradient(ellipse at 70% 60%,rgba(239,83,80,0.05) 0%,transparent 70%);
    pointer-events:none;z-index:0;
}
.glow-accent{
    position:absolute;width:40%;height:50%;top:10%;right:-5%;
    background:radial-gradient(ellipse at 60% 50%,rgba(244,162,97,0.04) 0%,transparent 70%);
    pointer-events:none;z-index:0;
}
.glow-green{
    position:absolute;width:45%;height:55%;bottom:-5%;left:-5%;
    background:radial-gradient(ellipse at 40% 60%,rgba(5,150,105,0.04) 0%,transparent 70%);
    pointer-events:none;z-index:0;
}
.glow-purple{
    position:absolute;width:40%;height:55%;top:5%;left:-5%;
    background:radial-gradient(ellipse at 40% 50%,rgba(139,92,246,0.04) 0%,transparent 70%);
    pointer-events:none;z-index:0;
}

/* ---------- 纹理背景 ---------- */
.texture-grid{
    position:absolute;inset:0;pointer-events:none;z-index:0;opacity:0.35;
    background-image:
        linear-gradient(rgba(0,0,0,0.018) 1px,transparent 1px),
        linear-gradient(90deg,rgba(0,0,0,0.018) 1px,transparent 1px);
    background-size:48px 48px;
}
.texture-dots-fine{
    position:absolute;inset:0;pointer-events:none;z-index:0;opacity:0.4;
    background-image:radial-gradient(circle,rgba(211,47,47,0.04) 1px,transparent 1px);
    background-size:20px 20px;
}
.texture-diagonal{
    position:absolute;inset:0;pointer-events:none;z-index:0;opacity:0.3;
    background-image:repeating-linear-gradient(
        -45deg,transparent,transparent 14px,rgba(0,0,0,0.012) 14px,rgba(0,0,0,0.012) 15px
    );
}

/* 业务板块背景纹理（伪元素叠加） */
.has-texture{position:relative;}
.has-texture::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:1;}
.texture-medical::before{background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 10 v40 M10 30 h40' stroke='%23D32F2F' stroke-width='1.5' opacity='0.07'/%3E%3Ccircle cx='30' cy='30' r='8' fill='none' stroke='%23D32F2F' stroke-width='1' opacity='0.05'/%3E%3C/svg%3E") repeat;}
.texture-community::before{background:url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='20' cy='20' r='3' fill='%236366f1' opacity='0.08'/%3E%3Ccircle cx='60' cy='20' r='3' fill='%236366f1' opacity='0.08'/%3E%3Ccircle cx='40' cy='50' r='3' fill='%236366f1' opacity='0.08'/%3E%3Cline x1='20' y1='20' x2='60' y2='20' stroke='%236366f1' stroke-width='0.8' opacity='0.05'/%3E%3Cline x1='20' y1='20' x2='40' y2='50' stroke='%236366f1' stroke-width='0.8' opacity='0.05'/%3E%3Cline x1='60' y1='20' x2='40' y2='50' stroke='%236366f1' stroke-width='0.8' opacity='0.05'/%3E%3C/svg%3E") repeat;}
.texture-wellness::before{background:url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M50 15 Q65 30 60 55 Q55 75 50 85 Q45 75 40 55 Q35 30 50 15 Z' fill='%23059669' opacity='0.05'/%3E%3C/svg%3E") repeat;}
.texture-companion::before{background:url("data:image/svg+xml,%3Csvg width='90' height='90' viewBox='0 0 90 90' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M45 60 Q20 40 20 28 Q20 14 32 14 Q42 14 45 24 Q48 14 58 14 Q70 14 70 28 Q70 40 45 60 Z' fill='%23F4A261' opacity='0.06'/%3E%3C/svg%3E") repeat;}
.texture-endoflife::before{background:url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 50 Q20 35 35 25 Q50 15 60 30 Q70 15 85 25 Q100 35 90 50 Q80 65 60 55 Q40 65 30 50 Z' fill='none' stroke='%236b7280' stroke-width='1.2' opacity='0.06'/%3E%3C/svg%3E") repeat;}
.texture-grid-svg::before{background:url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 40 L40 0 M0 0 L40 40' stroke='%239ca3af' stroke-width='0.5' opacity='0.05'/%3E%3C/svg%3E") repeat;}

/* ---------- 渐变文字 ---------- */
.gradient-text{
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity 0.7s ease,transform 0.7s ease;}
.reveal.visible{opacity:1;transform:translateY(0);}

/* ---------- 页脚 ---------- */
.footer{
    background:#1A1A2E;color:#fff;padding:60px 0 30px;
    position:relative;z-index:2;
}
.footer h4{font-size:1.1rem;font-weight:700;margin-bottom:16px;color:#fff;}
.footer a{color:#9ca3af;text-decoration:none;transition:color 0.3s;}
.footer a:hover{color:#fff;}

/* ---------- 移动端菜单面板 ---------- */
.mobile-menu-panel{
    position:fixed;top:var(--nav-height);left:0;right:0;z-index:999;
    background:rgba(255,255,255,0.98);backdrop-filter:blur(14px);
    box-shadow:0 8px 32px rgba(0,0,0,0.1);
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:all 0.3s ease;
}
.mobile-menu-panel.open{transform:translateY(0);opacity:1;visibility:visible;}

/* ---------- 加载骨架屏 ---------- */
@keyframes skeleton-pulse{
    0%{background-color:#e5e7eb;}
    50%{background-color:#f3f4f6;}
    100%{background-color:#e5e7eb;}
}
.skeleton{
    background:#e5e7eb;border-radius:var(--radius-md);
    animation:skeleton-pulse 1.5s ease-in-out infinite;
}

/* ---------- 表单 ---------- */
input:focus,select:focus,textarea:focus{
    border-color:var(--color-primary) !important;
    outline:none;box-shadow:0 0 0 3px rgba(211,47,47,0.1);
}

/* ---------- 图标圆形 ---------- */
.icon-circle{
    width:64px;height:64px;border-radius:50%;
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    display:flex;align-items:center;justify-content:center;
    margin:0 auto 1.25rem;flex-shrink:0;
    box-shadow:0 6px 20px rgba(211,47,47,0.3);
    transition:transform var(--transition-base),box-shadow var(--transition-base);
}
.card-base:hover .icon-circle{transform:scale(1.1) rotate(5deg);box-shadow:0 8px 28px rgba(211,47,47,0.45);}

/* ---------- 合作伙伴 Logo ---------- */
.partner-box{
    width:120px;height:120px;background:#fff;border-radius:1rem;
    box-shadow:0 4px 16px rgba(0,0,0,0.06);
    border:1px solid rgba(0,0,0,0.04);
    display:flex;align-items:center;justify-content:center;
    transition:all var(--transition-base);cursor:pointer;
    filter:grayscale(100%);opacity:0.65;
}
.partner-box:hover{filter:grayscale(0%);opacity:1;transform:translateY(-6px) scale(1.05);box-shadow:0 12px 32px rgba(211,47,47,0.12);}

/* ---------- Section 渐变分割带 ---------- */
.section-divider{
    position:absolute;bottom:0;left:0;right:0;height:80px;z-index:1;
    pointer-events:none;
}
.section-divider-up{
    position:absolute;top:0;left:0;right:0;height:80px;z-index:1;
    pointer-events:none;
}

/* ---------- 服务页面 Tab 样式 ---------- */
.tab-sticky{position:sticky;top:var(--nav-height);z-index:999;background:#fff;border-bottom:1px solid #f0f0f0;}
.tab-btn{
    padding:14px 22px;border:none;background:none;cursor:pointer;
    font-size:0.95rem;font-weight:600;color:#666;
    border-bottom:3px solid transparent;transition:all 0.3s ease;white-space:nowrap;
}
.tab-btn:hover{color:var(--color-primary);border-bottom-color:rgba(211,47,47,0.3);}
.tab-btn.active{
    color:var(--color-primary);border-bottom-color:var(--color-primary);
    background:linear-gradient(180deg,rgba(211,47,47,0.04),transparent);
}
.svc-card{
    background:#fff;border-radius:var(--radius-lg);padding:2rem;
    box-shadow:var(--shadow-md);border:1px solid rgba(0,0,0,0.04);
    border-left:4px solid var(--color-primary);
    transition:all var(--transition-base);
}
.svc-card:hover{transform:translateX(6px);box-shadow:0 12px 40px rgba(211,47,47,0.12);}
.svc-icon{
    width:56px;height:56px;border-radius:1rem;
    background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 4px 16px rgba(211,47,47,0.3);flex-shrink:0;
}
.svc-tag{
    display:inline-block;padding:3px 12px;border-radius:50px;
    background:rgba(211,47,47,0.08);color:var(--color-primary);
    font-size:0.78rem;font-weight:600;
}
.cat-header{
    background:linear-gradient(135deg,rgba(211,47,47,0.04),rgba(239,83,80,0.04));
    border-radius:var(--radius-lg);padding:2rem;margin-bottom:2rem;
    border:1px solid rgba(211,47,47,0.08);
}

/* ---------- CTA Section ---------- */
.cta-section{background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;text-align:center;padding:80px 24px;position:relative;overflow:hidden;}
.cta-section::before{content:'';position:absolute;width:500px;height:500px;border-radius:50%;background:rgba(255,255,255,0.05);bottom:-200px;left:-100px;}
.cta-section .btn-outline{color:#fff;border-color:#fff;}
.cta-section .btn-outline:hover{background:#fff;color:var(--color-primary);}

/* ---------- 响应式 ---------- */
@media(max-width:768px){
    .page-dots{display:none;}
    .timeline-wrap::before{left:20px;}
    .tl-dot{left:20px;}
    .tl-item{flex-direction:column;padding-left:48px;}
    .tl-item.left .tl-card,.tl-item.right .tl-card{width:100%;}
    .tl-item.left,.tl-item.right{justify-content:flex-start;}
    .card-base{padding:1.5rem;}
    .partner-box{width:90px;height:90px;}
}