/* 次元造物社 · 通用样式 */
:root{
  --ink:#1E1B33; --ink2:#5B5878; --ink3:#8C88A6;
  --line:#ECE8F8; --accent:#6C5CE7; --accent2:#8E7BFF;
  --bg:#FBFAFF; --card:#FFFFFF; --gold:#E8B84B; --price:#E4396B;
  --r:16px;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg); color:var(--ink); font-size:15px; line-height:1.6;
  padding-bottom:calc(24px + env(safe-area-inset-bottom));
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit}

/* header */
.hd{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;background:rgba(251,250,255,.86);
  backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:17px;letter-spacing:.02em}
.brand .mk{width:26px;height:26px;border-radius:9px;flex:0 0 26px;background:linear-gradient(135deg,var(--accent2),var(--accent));display:grid;place-items:center}
.brand .mk svg{width:15px;height:15px}
.hd .tel{font-size:12.5px;color:var(--ink2);display:flex;align-items:center;gap:5px;white-space:nowrap}
.back{display:flex;align-items:center;gap:7px;font-weight:700;font-size:16px;min-width:0}
.back .ar{width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center}
.back .ar svg{width:12px;height:12px}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  border:none;border-radius:999px;font-size:15px;font-weight:600;
  padding:13px 24px;background:var(--accent);color:#fff;
  box-shadow:0 8px 20px rgba(108,92,231,.3);
  transition:transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn:active{transform:scale(.975)}
.btn[disabled]{opacity:.5;box-shadow:none}
.btn.wx{background:#07C160;box-shadow:0 8px 20px rgba(7,193,96,.28)}
.btn.ghost{background:#fff;color:var(--ink2);border:1px solid var(--line);box-shadow:none}

/* footer */
.ft{margin-top:26px;padding:24px 16px 8px;border-top:1px solid var(--line);color:var(--ink3);font-size:12px;line-height:1.9}
.ft h3{font-size:13.5px;color:var(--ink);font-weight:700;margin-bottom:8px}
.ft nav{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:12px}
.ft nav a{color:var(--accent)}
.ft .cp{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line)}

/* toast */
.toast{
  position:fixed;left:50%;bottom:40px;transform:translate(-50%,20px);
  background:rgba(30,27,51,.92);color:#fff;font-size:13px;padding:10px 18px;border-radius:999px;
  opacity:0;pointer-events:none;transition:all .26s ease;z-index:99;max-width:82vw;text-align:center;
}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* bottom bar */
.bbar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  display:flex;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);
  border-top:1px solid var(--line);
}
.bbar .sum{flex:1;min-width:0}
.bbar .sum .lb{font-size:11.5px;color:var(--ink3)}
.bbar .sum .vl{font-size:19px;font-weight:800;color:var(--price);letter-spacing:-.01em}
.bbar .sum .vl i{font-size:12px;font-style:normal;font-weight:600;margin-right:1px}
.bbar .btn{flex:0 0 auto}

/* 桌面端：以手机宽度居中展示 */
@media (min-width:600px){
  html{background:#EFEBFA}
  body{max-width:520px;margin:0 auto;background:var(--bg);min-height:100vh;box-shadow:0 0 60px rgba(30,27,51,.10)}
  .bbar{left:50%;right:auto;width:520px;transform:translateX(-50%);border-radius:18px 18px 0 0}
}