/* 无限臀山 · 轻奢白金 设计系统 */
:root{
  --primary:#C9B037;
  --secondary:#A89000;
  --bg:#FFFFFF;
  --card-bg:#FFFDF5;
  --accent:#B8860B;
  --text:#2C2C2C;
  --text-light:#666666;
  --border-color:#EAEAEA;
  --shadow-sm:0 2px 8px rgba(168,144,0,.06);
  --shadow-md:0 8px 24px rgba(168,144,0,.10);
  --shadow-lg:0 20px 60px rgba(168,144,0,.15);
  --radius:6px;
  --maxw:1440px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","思源宋体",serif;
  --font-sans:"PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:"Montserrat","Roboto",sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--secondary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary)}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;color:var(--text);line-height:1.3}
h1{font-size:clamp(28px,4vw,46px)}
h2{font-size:clamp(24px,3vw,36px);margin-bottom:.6em}
h3{font-size:clamp(18px,2vw,22px);margin-bottom:.4em}
p{margin-bottom:1em;color:var(--text)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:48px 0}
.muted{color:var(--text-light)}
.num{font-family:var(--font-num)}
.center{text-align:center}
.grid{display:grid;gap:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 32px;border-radius:var(--radius);font-family:var(--font-sans);font-size:15px;font-weight:500;cursor:pointer;border:none;transition:all .25s ease-out;text-decoration:none;position:relative;overflow:hidden}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);color:#fff}
.btn-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.tag{display:inline-block;padding:4px 12px;background:var(--card-bg);color:var(--accent);font-size:12px;border-radius:20px;border:1px solid var(--primary)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border-color)}
.header-top{background:var(--card-bg);font-size:13px;padding:6px 0;color:var(--text-light)}
.header-top .container{display:flex;justify-content:space-between;align-items:center}
.header-top a{color:var(--accent);font-weight:500}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;max-width:var(--maxw);margin:0 auto}
.logo{font-family:var(--font-serif);font-size:24px;font-weight:700;color:var(--primary);letter-spacing:1px}
.logo span{color:var(--text)}
.nav-main{display:flex;gap:32px;list-style:none}
.nav-main a{color:var(--text);font-weight:500;padding:8px 0;border-bottom:2px solid transparent;transition:.2s}
.nav-main a:hover,.nav-main a.active{color:var(--primary);border-bottom-color:var(--primary)}
.header-cta{display:flex;align-items:center;gap:12px}
.menu-toggle{display:none;background:none;border:none;font-size:24px;color:var(--primary);cursor:pointer}

/* ===== Hero ===== */
.hero{position:relative;min-height:560px;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:1}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(0,0,0,.6),rgba(0,0,0,.25))}
.hero-content{position:relative;z-index:2;max-width:680px;padding:80px 24px}
.hero-content h1{color:#fff;font-size:clamp(32px,5vw,56px);margin-bottom:24px;letter-spacing:1px}
.hero-content .hero-sub{font-size:18px;color:rgba(255,255,255,.9);margin-bottom:32px}
.hero-content .btn-outline{color:#fff;border-color:#fff}
.hero-content .btn-outline:hover{background:#fff;color:var(--primary)}

/* ===== Trust bar ===== */
.trust{background:var(--card-bg);padding:60px 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.trust-grid .num{font-size:42px;color:var(--primary);font-weight:700;display:block}
.trust-grid p{color:var(--text-light);margin:6px 0 0;font-size:14px}

/* ===== Cards ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
.card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;transition:transform .35s,box-shadow .35s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.card-img{aspect-ratio:4/3;overflow:hidden;background:#f5f5f5}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:24px}
.card-body h3{margin-bottom:8px}
.card-body p{color:var(--text-light);font-size:14px;margin-bottom:14px}
.card-link{color:var(--primary);font-weight:500;font-size:14px}

/* ===== Section heading ===== */
.section-head{text-align:center;margin-bottom:48px}
.section-head .eyebrow{color:var(--accent);letter-spacing:4px;font-size:13px;text-transform:uppercase;font-family:var(--font-num)}
.section-head h2{margin-top:8px}
.section-head p{color:var(--text-light);max-width:680px;margin:12px auto 0}

/* ===== Before/After Slider ===== */
.ba-wrap{max-width:520px;margin:0 auto;position:relative;user-select:none;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);aspect-ratio:1/1}
.ba-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba-after-clip{position:absolute;inset:0;overflow:hidden;width:50%}
.ba-after-clip img{position:absolute;left:0;top:0;width:200%;height:100%;object-fit:cover}
.ba-label{position:absolute;top:16px;padding:4px 12px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;letter-spacing:2px;border-radius:3px;z-index:3}
.ba-label.before{left:16px}
.ba-label.after{right:16px}
.ba-handle{position:absolute;top:0;bottom:0;left:50%;width:3px;background:var(--primary);transform:translateX(-50%);z-index:4;cursor:ew-resize}
.ba-handle::after{content:"⇆";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:42px;height:42px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--shadow-md)}

/* ===== Doctor card ===== */
.doctor-card{background:var(--card-bg);border:1px solid var(--primary);border-radius:var(--radius);padding:24px;text-align:center;transition:.3s}
.doctor-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.doctor-avatar{width:140px;height:140px;border-radius:50%;overflow:hidden;margin:0 auto 16px;border:3px solid var(--primary)}
.doctor-avatar img{width:100%;height:100%;object-fit:cover}
.doctor-card h3{margin-bottom:4px}
.doctor-title{color:var(--accent);font-size:13px;margin-bottom:10px}
.doctor-skills{font-size:13px;color:var(--text-light);margin-bottom:14px}
.doctor-card .badge{display:inline-block;color:var(--primary);font-size:18px;margin:0 1px}

/* ===== Pricing table ===== */
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.tab{padding:10px 22px;background:var(--card-bg);border:1px solid var(--border-color);border-radius:30px;cursor:pointer;font-size:14px;transition:.2s}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.price-table{width:100%;border-collapse:collapse;background:var(--card-bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.price-table th,.price-table td{padding:18px 20px;text-align:left;border-bottom:1px solid var(--border-color)}
.price-table th{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:500}
.price-table tr:hover td{background:#FFFCF0}
.price-table .price{color:var(--accent);font-family:var(--font-num);font-weight:700;font-size:18px}
.price-table .hot{background:var(--accent);color:#fff;font-size:11px;padding:2px 8px;border-radius:3px;margin-left:6px}

/* ===== Calendar ===== */
.calendar{max-width:540px;margin:0 auto;background:var(--card-bg);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.cal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.cal-head button{background:none;border:1px solid var(--border-color);width:34px;height:34px;border-radius:50%;cursor:pointer;color:var(--primary)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal-grid .dow{text-align:center;font-size:12px;color:var(--text-light);padding:6px 0}
.cal-day{aspect-ratio:1;display:flex;align-items:center;justify-content:center;border-radius:6px;cursor:pointer;font-size:14px;background:#fff;border:1px solid var(--border-color);transition:.15s}
.cal-day:hover{background:var(--card-bg);border-color:var(--primary)}
.cal-day.full{background:#f5f5f5;color:#bbb;cursor:not-allowed;text-decoration:line-through}
.cal-day.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.cal-day.dim{color:#ccc;cursor:default;background:transparent;border:none}

/* ===== Chat widget ===== */
.chat-widget{position:fixed;right:24px;bottom:24px;z-index:90}
.chat-toggle{width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:none;cursor:pointer;box-shadow:var(--shadow-lg);font-size:26px;display:flex;align-items:center;justify-content:center;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(201,176,55,.6)}50%{box-shadow:0 0 0 14px rgba(201,176,55,0)}}
.chat-box{display:none;position:absolute;right:0;bottom:76px;width:320px;max-height:440px;background:#fff;border-radius:8px;box-shadow:var(--shadow-lg);overflow:hidden;flex-direction:column}
.chat-box.open{display:flex}
.chat-header{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:14px 18px;display:flex;align-items:center;gap:10px;font-size:14px}
.chat-header .dot{width:8px;height:8px;border-radius:50%;background:#4ade80}
.chat-body{padding:16px;flex:1;overflow-y:auto;font-size:13px;background:var(--card-bg)}
.chat-msg{background:#fff;padding:10px 12px;border-radius:10px;margin-bottom:10px;box-shadow:var(--shadow-sm)}
.chat-foot{display:flex;padding:10px;border-top:1px solid var(--border-color)}
.chat-foot input{flex:1;border:1px solid var(--border-color);border-radius:4px;padding:8px;font-size:13px;outline:none}
.chat-foot button{background:var(--primary);color:#fff;border:none;padding:0 16px;margin-left:6px;border-radius:4px;cursor:pointer}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(20,20,20,.5);backdrop-filter:blur(5px);z-index:200;display:none;align-items:center;justify-content:center;padding:20px}
.modal-overlay.open{display:flex;animation:fade .2s}
.modal{background:#fff;border-radius:8px;max-width:480px;width:100%;padding:32px;box-shadow:var(--shadow-lg);animation:scaleIn .3s}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes scaleIn{from{transform:scale(.95);opacity:0}to{transform:scale(1);opacity:1}}
.modal h3{margin-bottom:18px;text-align:center}
.modal label{display:block;font-size:13px;color:var(--text-light);margin:10px 0 4px}
.modal input,.modal select,.modal textarea{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:4px;font-size:14px;font-family:inherit}
.modal .btn{width:100%;margin-top:18px}
.modal-close{position:absolute;top:12px;right:14px;background:none;border:none;font-size:22px;cursor:pointer;color:var(--text-light)}

/* ===== Process timeline ===== */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative}
.timeline::before{content:"";position:absolute;top:32px;left:10%;right:10%;height:2px;background:var(--primary);opacity:.3;z-index:0}
.tl-step{text-align:center;position:relative;z-index:1}
.tl-icon{width:64px;height:64px;border-radius:50%;background:#fff;border:2px solid var(--primary);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin:0 auto 12px;font-family:var(--font-num)}
.tl-step h4{font-family:var(--font-serif);font-size:16px;margin-bottom:6px}
.tl-step p{font-size:13px;color:var(--text-light)}

/* ===== Footer CTA ===== */
.footer-cta{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:80px 0;text-align:center}
.footer-cta h2{color:#fff;margin-bottom:16px}
.footer-cta p{color:rgba(255,255,255,.92);font-size:17px;margin-bottom:28px}
.footer-cta .btn{background:#fff;color:var(--primary);font-size:16px;padding:16px 40px}
.footer-cta .hotline{display:block;margin-top:18px;font-family:var(--font-num);font-size:22px;color:#fff;font-weight:600}

/* ===== Footer ===== */
.site-footer{background:#1a1a1a;color:#999;padding:60px 0 24px;font-size:13px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.site-footer h4{color:#fff;font-family:var(--font-serif);font-size:16px;margin-bottom:16px}
.site-footer a{color:#ccc}
.site-footer a:hover{color:var(--primary)}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.foot-bottom{border-top:1px solid #2a2a2a;padding-top:20px;text-align:center;color:#666;font-size:12px;line-height:1.8}

/* ===== Search ===== */
.search-hero{padding:80px 0;background:var(--card-bg);text-align:center}
.search-box{max-width:600px;margin:24px auto 0;display:flex;border:2px solid var(--primary);border-radius:30px;overflow:hidden;background:#fff}
.search-box input{flex:1;padding:14px 24px;border:none;outline:none;font-size:15px;font-family:inherit}
.search-box button{background:var(--primary);color:#fff;border:none;padding:0 28px;font-size:15px;cursor:pointer}
.hot-tags{margin-top:18px;font-size:13px;color:var(--text-light)}
.hot-tags a{margin:0 6px;color:var(--secondary)}
.search-results{padding:48px 0}
.search-item{padding:20px;background:var(--card-bg);border-radius:6px;margin-bottom:14px;border:1px solid var(--border-color)}
.search-item h3 a{color:var(--text)}
.search-item h3 a:hover{color:var(--primary)}
.search-item mark{background:rgba(201,176,55,.25);color:var(--accent);padding:0 2px}

/* ===== Breadcrumb ===== */
.crumb{padding:14px 0;font-size:13px;color:var(--text-light);background:var(--card-bg);border-bottom:1px solid var(--border-color)}
.crumb a{color:var(--text-light)}
.crumb a:hover{color:var(--primary)}
.crumb span{margin:0 6px;color:#ccc}

/* ===== Blog list ===== */
.blog-list .card{display:grid;grid-template-columns:300px 1fr;align-items:stretch}
.blog-list .card-img{aspect-ratio:auto;height:100%}
.blog-list .meta{font-size:12px;color:var(--text-light);margin-bottom:8px}

/* ===== 404 ===== */
.notfound{text-align:center;padding:120px 0}
.notfound h1{font-size:120px;color:var(--primary);font-family:var(--font-num);line-height:1}

/* ===== Mobile bottom bar ===== */
.mobile-cta{display:none;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border-color);z-index:80;padding:8px}
.mobile-cta .btn{flex:1;padding:12px;font-size:14px}

/* ===== Reveal animation ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease-out,transform .7s ease-out}
.reveal.on{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media (max-width:960px){
  .nav-main{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;box-shadow:var(--shadow-md);gap:0;border-top:1px solid var(--border-color)}
  .nav-main.open{display:flex}
  .nav-main li{border-bottom:1px solid var(--border-color)}
  .nav-main a{display:block;padding:14px 0}
  .menu-toggle{display:block}
  .header-cta .btn{display:none}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .blog-list .card{grid-template-columns:1fr}
  .blog-list .card-img{aspect-ratio:16/9}
  .mobile-cta{display:flex;gap:8px}
  body{padding-bottom:64px}
  .chat-widget{bottom:74px}
  .section{padding:56px 0}
}
@media (max-width:560px){
  .trust-grid{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}