/* 拼豆图纸网站 · 共用样式 */
:root {
  --bg: #f7f5f0;
  --panel: #ffffff;
  --line: #e4e0d8;
  --ink: #1f1d1a;
  --ink2: #5f5e5a;
  --ink3: #8d8b85;
  --accent: #c1502e;
  --accent-soft: #fbeee9;
  --ok: #3b6d11;
  --warn: #854f0b;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(31, 29, 26, .06);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.65;
}
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.35; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { width: min(1080px, calc(100% - 32px)); margin: 0 auto; }

/* 顶栏 */
.top { background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand h1 { font-size: 17px; }
.brand p { font-size: 12.5px; color: var(--ink3); }
.logo {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background:
    radial-gradient(circle at 30% 30%, #f7c9b3 0 22%, transparent 23%),
    radial-gradient(circle at 70% 38%, #d9a05f 0 22%, transparent 23%),
    radial-gradient(circle at 50% 72%, #8fa9c4 0 22%, transparent 23%),
    var(--accent);
}
.nav { display: flex; gap: 8px; }
.btn {
  display: inline-block; padding: 9px 16px; border-radius: 9px; border: 1px solid var(--accent);
  background: var(--accent); color: #fff; font-size: 14px; cursor: pointer; font-family: inherit;
}
.btn:hover { background: #a84526; border-color: #a84526; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: #f0eee8; border-color: var(--line); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { display: block; width: 100%; text-align: center; }

/* 首屏 */
.hero { padding: 40px 0 24px; }
.hero h2 { font-size: 24px; letter-spacing: -.01em; }
.hero .sub { color: var(--ink2); margin-top: 8px; max-width: 640px; }

/* 作品墙 */
.gallery {
  display: grid; gap: 16px; padding-bottom: 40px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.loading {
  grid-column: 1 / -1; padding: 44px 20px; text-align: center;
  color: var(--ink3); background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
}
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(31, 29, 26, .1); }
.card-img { aspect-ratio: 1; background: #f1efe8; display: grid; place-items: center; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: contain; image-rendering: pixelated; }
.card-txt { padding: 12px 14px 14px; border-top: 1px solid var(--line); }
.card-txt b { display: block; font-size: 14.5px; }
.card-txt span { display: block; font-size: 12.5px; color: var(--ink3); margin-top: 2px; }

/* 怎么用 */
.how { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; margin-bottom: 48px; }
.how h2 { font-size: 19px; margin-bottom: 18px; }
.steps { margin: 0; padding-left: 20px; display: grid; gap: 14px; }
.steps b { font-size: 14.5px; }
.steps p { color: var(--ink2); font-size: 13.5px; }
.fine { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--ink3); }

.foot { border-top: 1px solid var(--line); background: var(--panel); padding: 20px 0; font-size: 12.5px; color: var(--ink3); }

/* 上传页 */
.form-wrap { max-width: 620px; margin: 0 auto; padding: 32px 0 56px; }
.card-form { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.field { margin-bottom: 20px; }
.field > label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.field .hint { font-size: 12.5px; color: var(--ink3); margin-top: 6px; }
input[type=text], input[type=file] { width: 100%; }
input[type=text] {
  padding: 11px 13px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 15px; font-family: inherit; background: #fbfaf7; color: var(--ink);
  letter-spacing: .04em;
}
input[type=text]:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.choices { display: flex; gap: 8px; flex-wrap: wrap; }
.choice {
  padding: 9px 15px; border: 1px solid var(--line); border-radius: 9px; background: #fbfaf7;
  cursor: pointer; font-size: 13.5px; font-family: inherit; color: var(--ink);
}
.choice.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.preview {
  margin-top: 12px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: #f1efe8; display: none;
}
.preview img { width: 100%; max-height: 320px; object-fit: contain; }
.msg { padding: 12px 14px; border-radius: 9px; font-size: 13.5px; margin-bottom: 18px; display: none; }
.msg.err { background: #fbeceb; color: #a32d2d; border: 1px solid #f2c9c6; display: block; }
.msg.ok { background: #eaf3de; color: #3b6d11; border: 1px solid #c8e0a8; display: block; }
.msg.run { background: var(--accent-soft); color: var(--accent); border: 1px solid #f0d3c7; display: block; }
.bar { height: 6px; border-radius: 3px; background: #f0ddd3; overflow: hidden; margin-top: 10px; }
.bar i { display: block; height: 100%; width: 0; background: var(--accent); transition: width .3s; }
.tabs { display: flex; gap: 6px; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.tab {
  padding: 10px 4px; margin-right: 16px; background: none; border: 0; cursor: pointer;
  font-size: 14px; font-family: inherit; color: var(--ink3); border-bottom: 2px solid transparent;
}
.tab.on { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.pane { display: none; }
.pane.on { display: block; }
code.key {
  font-family: ui-monospace, Consolas, monospace; font-size: 15px; letter-spacing: .1em;
  background: #f1efe8; padding: 2px 6px; border-radius: 4px;
}