/* ══════════════════════════════════════════════════
   棠院 LA VILLA · 南法奢华风格官网
   配色：象牙白 / 香槟金 / 古铜 / 墨褐
   ══════════════════════════════════════════════════ */
:root{
  --ivory:#F6F1E7;
  --cream:#FBF8F1;
  --sand:#EDE5D5;
  --gold:#B08D57;
  --gold-light:#C9A86A;
  --bronze:#8C6D3F;
  --ink:#221D16;
  --ink-soft:#4A4237;
  --dark:#1E1913;
  --dark-2:#262019;
  --olive:#6B7252;
  --line:rgba(140,109,63,.28);
  --serif-en:'Cormorant Garamond',serif;
  --num-en:'Jost','Noto Serif SC',sans-serif;
  --serif-cn:'Noto Serif SC',serif;
  --header-h:76px;
  --radius:4px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--serif-cn);
  color:var(--ink);
  background:var(--cream);
  line-height:1.9;
  letter-spacing:.04em;
  overflow-x:hidden;
  padding-bottom:96px; /* 为右下角 AI 浮窗预留安全距离 */
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.container-narrow{max-width:900px}
::selection{background:var(--gold);color:#fff}

/* ───── 通用版式 ───── */
.section{padding:120px 0}
.section-dark{background:var(--dark);color:var(--ivory)}
.section-dark .lead{color:rgba(246,241,231,.66)}
.section-head{text-align:center;max-width:820px;margin:0 auto 72px}
.eyebrow{
  font-family:var(--serif-en);
  font-size:13px;letter-spacing:.5em;text-indent:.5em;
  color:var(--gold);text-transform:uppercase;margin-bottom:18px;
}
.title-cn{
  font-size:clamp(28px,4vw,42px);font-weight:600;letter-spacing:.12em;
  margin-bottom:26px;
}
.title-cn::after{
  content:"";display:block;width:56px;height:1px;background:var(--gold);
  margin:24px auto 0;
}
.lead{font-size:16px;color:var(--ink-soft);font-weight:300}

/* ───── 顶部导航 ───── */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;height:var(--header-h);
  transition:background .4s,box-shadow .4s;
  background:transparent;
}
.site-header.scrolled{
  background:rgba(251,248,241,.94);
  backdrop-filter:blur(12px);
  box-shadow:0 1px 0 var(--line),0 8px 30px rgba(34,29,22,.08);
}
.header-inner{
  max-width:1360px;margin:0 auto;height:100%;position:relative;
  display:flex;align-items:center;gap:28px;padding:0 32px;
}
.brand{display:flex;align-items:baseline;gap:10px;color:#fff;transition:color .4s}
.site-header.scrolled .brand{color:var(--ink)}
.brand-cn{font-size:24px;font-weight:700;letter-spacing:.28em}
.brand-en{font-family:var(--serif-en);font-size:12px;letter-spacing:.42em;color:var(--gold-light)}
.main-nav{display:flex;gap:6px;position:absolute;left:50%;transform:translateX(-50%)}
.header-contact{margin-left:auto}
.nav-link{
  position:relative;padding:8px 16px;font-size:15px;letter-spacing:.2em;
  color:rgba(255,255,255,.85);transition:color .3s;
}
.site-header.scrolled .nav-link{color:var(--ink-soft)}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:center;transition:transform .35s;
}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--gold-light)}
.site-header.scrolled .nav-link.active{color:var(--bronze)}

/* 右上角联系方式 */
.header-contact{display:flex;align-items:center;gap:14px}
.vip-line{
  display:flex;flex-direction:column;align-items:flex-end;line-height:1.35;
  color:#fff;transition:color .4s;
}
.site-header.scrolled .vip-line{color:var(--ink)}
.vip-label{font-family:var(--serif-en);font-size:10px;letter-spacing:.32em;color:var(--gold-light)}
.vip-num{font-family:var(--num-en);font-size:19px;letter-spacing:.08em}
.qr-btn{
  display:flex;align-items:center;gap:6px;cursor:pointer;
  border:1px solid rgba(255,255,255,.5);color:#fff;background:transparent;
  padding:7px 14px;border-radius:2px;font-family:var(--serif-cn);font-size:13px;letter-spacing:.12em;
  transition:all .3s;
}
.qr-btn:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.site-header.scrolled .qr-btn{border-color:var(--line);color:var(--ink-soft)}
.site-header.scrolled .qr-btn:hover{border-color:var(--gold);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:1.5px;background:#fff;transition:.3s}
.site-header.scrolled .nav-toggle span{background:var(--ink)}

/* ───── 首页 Hero ───── */
.hero{position:relative;height:100vh;min-height:640px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-bg{position:absolute;inset:-12% 0 0;z-index:1;will-change:transform}
.hero-bg img{width:100%;height:112%;object-fit:cover}
.hero-overlay{
  position:absolute;inset:0;z-index:2;
  background:linear-gradient(180deg,rgba(24,19,13,.52) 0%,rgba(24,19,13,.30) 45%,rgba(24,19,13,.62) 100%);
}
.hero-content{position:relative;z-index:3;text-align:center;color:#fff;padding:0 24px}
.hero-eyebrow{font-size:14px;letter-spacing:.5em;text-indent:.5em;color:rgba(255,255,255,.82);margin-bottom:28px}
.hero-title{display:flex;flex-direction:column;align-items:center;gap:6px}
.hero-title-cn{font-size:clamp(64px,12vw,128px);font-weight:700;letter-spacing:.3em;text-indent:.3em;line-height:1.15;text-shadow:0 4px 40px rgba(0,0,0,.35)}
.hero-title-en{font-family:var(--serif-en);font-size:clamp(16px,2.4vw,24px);letter-spacing:.85em;text-indent:.85em;color:var(--gold-light)}
.hero-divider{display:flex;align-items:center;justify-content:center;gap:14px;margin:34px 0 22px}
.hero-divider i{display:block;width:72px;height:1px;background:linear-gradient(90deg,transparent,var(--gold-light));}
.hero-divider i:last-child{background:linear-gradient(90deg,var(--gold-light),transparent)}
.hero-divider em{font-style:normal;color:var(--gold-light);font-size:12px}
.hero-slogan{font-size:clamp(16px,2.2vw,21px);letter-spacing:.32em;text-indent:.32em;font-weight:300}
.hero-actions{display:flex;gap:18px;justify-content:center;margin-top:48px}
.btn-gold,.btn-ghost{
  padding:14px 42px;font-size:15px;letter-spacing:.28em;text-indent:.28em;
  transition:all .35s;border-radius:2px;
}
.btn-gold{background:var(--gold);color:#fff;border:1px solid var(--gold)}
.btn-gold:hover{background:var(--bronze);border-color:var(--bronze)}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff;background:transparent}
.btn-ghost:hover{border-color:var(--gold-light);color:var(--gold-light)}
.hero-scroll{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:3;width:1px;height:56px;background:rgba(255,255,255,.25);overflow:hidden}
.hero-scroll span{position:absolute;top:0;left:0;width:100%;height:20px;background:var(--gold-light);animation:scrollHint 2s infinite}
@keyframes scrollHint{0%{top:-20px}100%{top:56px}}

/* ───── 数据印象 ───── */
.stats-section{padding:88px 0;border-bottom:1px solid var(--line);background:var(--ivory)}
.stats-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.stat-item{text-align:center;position:relative}
.stat-item:not(:last-child)::after{
  content:"";position:absolute;right:-12px;top:18%;height:64%;width:1px;background:var(--line);
}
.stat-item b{font-family:var(--num-en);font-feature-settings:"lnum" 1,"tnum" 1;font-size:clamp(32px,3.6vw,46px);font-weight:300;letter-spacing:.04em;color:var(--bronze);display:block;line-height:1.2}
.stat-item b i{font-style:normal;font-size:.42em;margin-left:2px}
.stat-item span{font-size:13px;letter-spacing:.2em;color:var(--ink-soft)}

/* ───── 品牌 ───── */
.brand-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.brand-card{
  position:relative;background:var(--ivory);border:1px solid var(--line);
  padding:56px 48px 48px;transition:transform .4s,box-shadow .4s;
}
.brand-card:hover{transform:translateY(-6px);box-shadow:0 24px 60px rgba(34,29,22,.10)}
.brand-card::before{
  content:"";position:absolute;top:10px;left:10px;right:10px;bottom:10px;
  border:1px solid rgba(176,141,87,.25);pointer-events:none;
}
.brand-card-no{
  font-family:var(--serif-en);font-size:15px;color:var(--gold);
  letter-spacing:.4em;margin-bottom:20px;
}
.brand-card h3{font-size:26px;letter-spacing:.1em;margin-bottom:6px}
.brand-card-sub{font-size:14px;color:var(--bronze);letter-spacing:.2em;margin-bottom:22px}
.brand-card-text{font-size:15px;font-weight:300;color:var(--ink-soft)}

/* ───── 项目 / 图片版式 ───── */
.wide-figure{margin:0 0 56px;text-align:center}
.wide-figure img{width:100%;border:1px solid rgba(176,141,87,.3);border-radius:var(--radius)}
.section-dark .wide-figure img{border-color:rgba(201,168,106,.28)}
.wide-figure figcaption{
  margin-top:16px;font-size:13px;letter-spacing:.24em;color:var(--ink-soft);
}
.section-dark .wide-figure figcaption{color:rgba(246,241,231,.5)}
.wide-figure figcaption::before,.wide-figure figcaption::after{content:"——";color:var(--gold);margin:0 12px;letter-spacing:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin:64px 0}
.feature-item{padding:40px 32px;border:1px solid rgba(201,168,106,.24);background:rgba(255,255,255,.02);transition:background .35s,border-color .35s}
.feature-item:hover{background:rgba(176,141,87,.08);border-color:var(--gold)}
.feature-no{
  font-family:var(--num-en);font-size:26px;color:var(--gold-light);
  display:block;margin-bottom:18px;
}
.feature-item h4{font-size:19px;letter-spacing:.14em;margin-bottom:14px;color:var(--gold-light)}
.feature-item p{font-size:14px;font-weight:300;color:rgba(246,241,231,.68)}

/* ───── 户型 ───── */
.layout-tabs{display:flex;justify-content:center;gap:20px;margin-bottom:56px;flex-wrap:wrap}
.layout-tab{
  cursor:pointer;background:transparent;border:1px solid var(--line);
  padding:14px 36px;font-family:var(--serif-cn);font-size:16px;letter-spacing:.12em;
  color:var(--ink-soft);transition:all .35s;border-radius:2px;
}
.layout-tab.active{background:var(--ink);color:var(--gold-light);border-color:var(--ink)}
.layout-tab:hover:not(.active){border-color:var(--gold);color:var(--bronze)}
.layout-panel{display:none}
.layout-panel.active{display:block;animation:fadeUp .6s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.layout-points{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:48px}
.lp{padding:28px 24px;background:var(--ivory);border-top:2px solid var(--gold)}
.lp b{display:block;font-size:16px;letter-spacing:.1em;margin-bottom:12px;color:var(--bronze)}
.lp p{font-size:14px;font-weight:300;color:var(--ink-soft)}
.layout-img{text-align:center;background:var(--ivory);border:1px solid var(--line);padding:32px}
.layout-img img{max-height:1200px;margin:0 auto;cursor:zoom-in;transition:opacity .3s}
.layout-img img:hover{opacity:.92}

/* ───── 配套 ───── */
.facility-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 48px;margin-bottom:72px}
.fc{display:flex;gap:20px;padding:26px 8px;border-bottom:1px solid var(--line)}
.fc-icon{color:var(--gold);font-size:15px;line-height:2}
.fc b{display:block;font-size:17px;letter-spacing:.12em;margin-bottom:8px}
.fc p{font-size:14px;font-weight:300;color:var(--ink-soft)}
.gallery-2col{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.gallery-2col .wide-figure{margin-bottom:56px}

/* ───── 问答 ───── */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(201,168,106,.24)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:26px 8px;font-size:18px;letter-spacing:.1em;
  display:flex;align-items:center;justify-content:space-between;transition:color .3s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--serif-en);font-size:24px;color:var(--gold);transition:transform .3s;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--gold-light)}
.faq-body{padding:0 8px 30px;font-size:15px;font-weight:300;color:rgba(246,241,231,.72)}
.faq-body a{color:var(--gold-light);border-bottom:1px solid var(--gold)}

/* ───── 页脚 ───── */
.site-footer{background:var(--dark);color:rgba(246,241,231,.72);padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:1.2fr 1.6fr 1fr;gap:48px;align-items:start}
.footer-brand .brand-cn{font-size:30px;color:var(--ivory)}
.footer-brand .brand-en{display:block;font-family:var(--serif-en);font-size:13px;letter-spacing:.4em;color:var(--gold-light);margin:6px 0 18px}
.footer-brand p{font-size:13px;letter-spacing:.16em;color:rgba(246,241,231,.5)}
.footer-info p{font-size:14px;font-weight:300;margin-bottom:14px}
.footer-info b{display:block;color:var(--gold-light);font-weight:500;letter-spacing:.2em;font-size:12px;margin-bottom:4px}
.footer-info a{color:var(--ivory);font-family:var(--num-en);font-size:22px;letter-spacing:.06em}
.footer-qr{text-align:center}
.footer-qr img{width:180px;margin:0 auto 10px;border:1px solid rgba(201,168,106,.35);border-radius:var(--radius)}
.footer-qr span{font-size:12px;letter-spacing:.18em;color:rgba(246,241,231,.5)}
.footer-copy{
  margin-top:64px;padding:22px 32px;border-top:1px solid rgba(201,168,106,.18);
  text-align:center;font-size:12px;color:rgba(246,241,231,.38);letter-spacing:.1em;
}

/* ───── 二维码弹窗 / 图片灯箱 ───── */
.qr-modal,.lightbox{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center}
.qr-modal.open,.lightbox.open{display:flex}
.qr-modal-mask,.lightbox-mask{position:absolute;inset:0;background:rgba(20,16,11,.72);backdrop-filter:blur(6px)}
.qr-modal-card{
  position:relative;background:var(--cream);padding:24px;max-width:min(420px,88vw);
  border:1px solid var(--gold);text-align:center;animation:fadeUp .35s ease;
}
.qr-modal-card p{margin-top:14px;font-size:13px;letter-spacing:.24em;color:var(--bronze)}
.qr-modal-close,.lightbox-close{
  position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;
  background:var(--gold);color:#fff;border:0;font-size:19px;cursor:pointer;line-height:1;
}
.lightbox img{position:relative;max-width:92vw;max-height:90vh;box-shadow:0 30px 80px rgba(0,0,0,.5);animation:fadeUp .3s ease}

/* ───── AI 置业顾问（右下角浮窗） ───── */
.ai-widget{position:fixed;right:24px;bottom:24px;z-index:950;font-family:var(--serif-cn)}
.ai-fab{
  display:flex;align-items:center;gap:10px;cursor:pointer;border:0;
  background:var(--dark);color:var(--gold-light);padding:14px 22px;border-radius:40px;
  box-shadow:0 12px 36px rgba(20,16,11,.35);letter-spacing:.14em;font-size:14px;
  transition:transform .3s,background .3s;
}
.ai-fab:hover{transform:translateY(-3px);background:var(--bronze);color:#fff}
.ai-panel{
  position:absolute;right:0;bottom:calc(100% + 14px);width:min(380px,calc(100vw - 48px));
  height:min(540px,calc(100vh - 140px));
  background:var(--cream);border:1px solid var(--gold);border-radius:8px;
  box-shadow:0 24px 70px rgba(20,16,11,.35);display:none;flex-direction:column;overflow:hidden;
}
.ai-panel.open{display:flex;animation:fadeUp .3s ease}
.ai-head{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--dark);color:var(--ivory);padding:14px 18px;
}
.ai-head-info b{display:block;font-size:15px;letter-spacing:.12em;color:var(--gold-light)}
.ai-head-info span{font-size:11px;color:rgba(246,241,231,.6);letter-spacing:.08em}
.ai-close{background:none;border:0;color:var(--ivory);font-size:18px;cursor:pointer;padding:4px 8px}
.ai-body{flex:1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:12px}
.ai-msg{max-width:84%;padding:10px 14px;font-size:14px;line-height:1.8;border-radius:6px;animation:fadeUp .25s ease}
.ai-msg.bot{align-self:flex-start;background:var(--sand);color:var(--ink);border-bottom-left-radius:2px}
.ai-msg.user{align-self:flex-end;background:var(--gold);color:#fff;border-bottom-right-radius:2px}
.ai-msg.bot a{color:var(--bronze);text-decoration:underline}
.ai-quick{display:flex;gap:8px;flex-wrap:wrap;padding:10px 16px;border-top:1px solid var(--line)}
.ai-quick button{
  cursor:pointer;background:transparent;border:1px solid var(--line);border-radius:20px;
  padding:5px 13px;font-size:12px;font-family:var(--serif-cn);color:var(--bronze);transition:all .25s;
}
.ai-quick button:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.ai-input{display:flex;border-top:1px solid var(--line);background:#fff}
.ai-input input{
  flex:1;border:0;outline:0;padding:13px 16px;font-size:14px;font-family:var(--serif-cn);
  background:transparent;color:var(--ink);
}
.ai-input button{
  border:0;background:var(--dark);color:var(--gold-light);width:52px;cursor:pointer;transition:background .3s;
}
.ai-input button:hover{background:var(--bronze);color:#fff}

/* ───── 滚动显现动画（仅在 JS 可用时启用隐藏态，避免无 JS 时内容不可见） ───── */
html.js .reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s ease}
html.js .reveal.in{opacity:1;transform:none}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}
.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}
.reveal.d5{transition-delay:.5s}.reveal.d6{transition-delay:.6s}

/* ───── 响应式 ───── */
@media (max-width:1024px){
  .stats-grid{grid-template-columns:repeat(3,1fr);gap:36px 16px}
  .stat-item:nth-child(3)::after{display:none}
  .layout-points{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr 1fr}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:var(--header-h);left:0;right:0;z-index:899;
    flex-direction:column;background:rgba(251,248,241,.98);backdrop-filter:blur(12px);
    padding:12px 0;border-bottom:1px solid var(--line);
    transform:translateY(-130%);transition:transform .4s;
  }
  .main-nav.open{transform:none}
  .main-nav .nav-link{color:var(--ink);text-align:center;padding:14px;letter-spacing:.3em}
}
@media (max-width:768px){
  body{padding-bottom:80px}
  .section{padding:80px 0}
  .container{padding:0 20px}
  .header-contact .qr-btn-text{display:none}
  .brand-cn{font-size:20px;letter-spacing:.2em;white-space:nowrap}
  .vip-line{white-space:nowrap}
  .vip-num{font-size:15px;letter-spacing:.02em}
  .vip-label{font-size:9px}
  .header-inner{gap:14px;padding:0 18px}
  .brand-grid,.feature-grid,.facility-list,.gallery-2col,.footer-grid{grid-template-columns:1fr}
  .layout-points{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item::after{display:none}
  .footer-qr img{width:200px}
  .ai-widget{right:16px;bottom:16px}
  .ai-panel{position:fixed;right:12px;left:12px;bottom:88px;width:auto;height:min(60vh,520px)}
}
@media (max-width:420px){
  .vip-line .vip-num{font-size:14px}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-eyebrow{letter-spacing:.24em;font-size:12px}
  .hero-slogan{letter-spacing:.14em;font-size:14px;text-indent:0}
  .hero-title-cn{letter-spacing:.2em;text-indent:.2em}
}