/* Rumah Kuih — 3D 网站概念作品（EMI Design Co.）共用样式 */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{--display:'Playfair Display',Georgia,serif;--bg:#0A0F0C;--green:#12301F;--cream:#F4E9D2;--gold:#F7C873;--coral:#F26B4F;--strip:30px}
html{background:var(--bg)}
body{font-family:Jost,sans-serif;color:var(--cream);background:var(--bg);min-height:100vh}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.bg{position:fixed;inset:0;z-index:0;background:radial-gradient(60% 55% at 50% 78%,rgba(38,92,62,.55) 0%,transparent 70%),radial-gradient(40% 40% at 85% 10%,rgba(242,107,79,.12),transparent 70%),radial-gradient(45% 45% at 10% 30%,rgba(247,200,115,.07),transparent 70%),#0A0F0C}
/* 全屏噪点质感 */
.noise{position:fixed;inset:-50%;z-index:80;pointer-events:none;opacity:.07;mix-blend-mode:overlay;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");animation:grain 1s steps(4) infinite}
@keyframes grain{25%{transform:translate(-3%,2%)}50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-1%)}}
.bg:after{content:"";position:absolute;inset:0;opacity:.16;background-image:radial-gradient(#F4E9D2 1px,transparent 1px);background-size:26px 26px;
  -webkit-mask:radial-gradient(60% 60% at 50% 40%,transparent 30%,#000 100%);mask:radial-gradient(60% 60% at 50% 40%,transparent 30%,#000 100%)}

/* 最上面那条：讲清楚这是 EMI 的 3D 网站概念作品 */
.strip{position:fixed;top:0;left:0;right:0;z-index:60;height:var(--strip);display:flex;align-items:center;justify-content:center;gap:.6em;
  background:#F6EEDF;color:#1C1813;font-size:11.5px;letter-spacing:.08em;white-space:nowrap;overflow:hidden;padding:0 12px}
.strip b{font-weight:500;color:#9A6508}
.strip a{text-decoration:underline;text-underline-offset:3px}
.strip .zh{opacity:.75}

nav{position:fixed;top:var(--strip);left:0;right:0;z-index:40;height:clamp(64px,9vh,86px);display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(18px,4.5vw,64px);font-size:13px;letter-spacing:.18em;text-transform:uppercase;transition:background .3s}
nav.solid{background:rgba(11,29,20,.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
nav .logo{font-family:var(--display);font-style:italic;font-weight:700;font-size:clamp(22px,2vw,28px);letter-spacing:0;text-transform:none;color:var(--gold)}
nav .links{display:flex;gap:40px;opacity:.85}
nav .links a{position:relative;padding:4px 0}
nav .links a:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--gold);transform:scaleX(0);transition:transform .3s}
nav .links a:hover,nav .links a.on{color:var(--gold)}
nav .links a.on:after,nav .links a:hover:after{transform:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:12px 22px;border-radius:30px;background:var(--coral);color:#fff;border:0;
  font:inherit;font-size:13px;letter-spacing:.16em;text-transform:uppercase;cursor:pointer;transition:transform .2s,background .2s}
.btn:hover{background:#ff7d61;transform:translateY(-2px)}
.btn.ghost{background:transparent;border:1.5px solid rgba(244,233,210,.6);color:var(--cream)}
.btn.ghost:hover{background:rgba(244,233,210,.1)}
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:#fff;color:var(--coral);font-size:11px;letter-spacing:0}

/* 提示小卡：概念网站的表单 / 下单按钮不会真的送出 */
.toast{position:fixed;z-index:70;left:50%;bottom:24px;transform:translate(-50%,140%);width:min(440px,calc(100% - 32px));background:#F4E9D2;color:#12301F;border-radius:16px;
  padding:16px 18px;font-size:14px;line-height:1.5;box-shadow:0 20px 50px rgba(0,0,0,.4);transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.toast.on{transform:translate(-50%,0)}
.toast b{display:block;font-size:15px;margin-bottom:2px}
.toast a{color:#C2410C;font-weight:500;text-decoration:underline;text-underline-offset:3px}

/* 内页 */
.page{position:relative;z-index:1;padding:calc(var(--strip) + 120px) clamp(18px,4.5vw,64px) 80px;max-width:1280px;margin:0 auto}
.kicker{font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:14px}
.title{font-family:var(--display);font-weight:900;font-size:clamp(46px,8vw,120px);line-height:.98;letter-spacing:-.02em}
.title em{font-style:italic;font-weight:400;color:var(--coral)}
.lead{max-width:34em;margin-top:18px;font-size:clamp(15px,1.3vw,18px);line-height:1.7;opacity:.8}
.reveal{opacity:0;transform:translateY(40px);transition:opacity .8s,transform .8s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
footer{position:relative;z-index:1;border-top:1px solid rgba(244,233,210,.12);padding:28px clamp(18px,4.5vw,64px);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;letter-spacing:.14em;text-transform:uppercase;opacity:.7}

@media (max-width:760px){
  :root{--strip:28px}
  .strip{font-size:10.5px}
  .strip .zh{display:none}
  nav .links{display:none}
  nav .btn{padding:10px 14px;font-size:11px}
  .menu-btn{display:flex!important}
}
/* 手机版菜单 */
.menu-btn{display:none;width:42px;height:42px;border-radius:50%;border:1.5px solid rgba(244,233,210,.5);align-items:center;justify-content:center;cursor:pointer;background:none;color:var(--cream);font-size:18px;margin-right:10px}
.mnav{position:fixed;z-index:55;inset:0;background:rgba(11,29,20,.97);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
  font-family:var(--display);font-style:italic;font-size:44px;opacity:0;pointer-events:none;transition:opacity .3s}
.mnav.on{opacity:1;pointer-events:auto}
.mnav a.on{color:var(--coral)}
.mnav .close{position:absolute;top:calc(var(--strip) + 18px);right:20px;font-family:Jost;font-style:normal;font-size:28px;background:none;border:0;color:var(--cream);cursor:pointer}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.noise{animation:none}}

/* ---------- 360° 真 3D 模型 ---------- */
.v3d{display:none;align-items:center;gap:8px;padding:9px 16px;border-radius:30px;border:1px solid rgba(247,200,115,.55);background:rgba(10,15,12,.55);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  color:var(--cream);font:inherit;font-size:12px;letter-spacing:.18em;text-transform:uppercase;cursor:pointer;transition:background .25s,transform .25s}
.v3d.on{display:inline-flex}
.v3d:hover{background:var(--coral);border-color:transparent;transform:translateY(-2px)}
.v3d i{font-style:normal;font-size:16px;display:inline-block;animation:spin3d 3s linear infinite}
@keyframes spin3d{to{transform:rotateY(360deg)}}
.viewer{position:fixed;z-index:95;inset:0;background:radial-gradient(60% 60% at 50% 55%,rgba(38,92,62,.55),transparent 70%),#070B08;display:flex;flex-direction:column;opacity:0;pointer-events:none;transition:opacity .35s}
.viewer.on{opacity:1;pointer-events:auto}
.vstage{position:relative;flex:1;min-height:0}
.viewer model-viewer{position:absolute;inset:0;width:100%;height:100%;--poster-color:transparent;touch-action:none;outline:none}
.vhead{text-align:center;padding:calc(var(--strip) + 28px) 16px 0}
.vhead h2{font-family:var(--display);font-weight:900;font-style:italic;font-size:clamp(38px,6vw,72px);color:var(--coral);line-height:1}
.vfoot{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;padding:16px 16px calc(28px + env(safe-area-inset-bottom));font-size:12px;letter-spacing:.2em;text-transform:uppercase}
.vfoot span{opacity:.6}
.vx{position:absolute;z-index:2;top:calc(var(--strip) + 16px);right:18px;width:48px;height:48px;border-radius:50%;border:1.5px solid rgba(244,233,210,.5);background:none;color:var(--cream);font-size:20px;cursor:pointer}
.vload{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:12px;letter-spacing:.24em;text-transform:uppercase;opacity:.6;pointer-events:none}
.viewer model-viewer[loaded]+.vload,.viewer .vload.done{display:none}
.ar-btn{position:absolute;right:16px;bottom:16px;padding:10px 16px;border-radius:30px;border:0;background:var(--cream);color:#12301F;font:inherit;font-size:12px;letter-spacing:.14em;text-transform:uppercase;cursor:pointer}