/* 千丝 · 供需广场 v1 —— 样式
 * 视觉方向：温暖集市（纸米底）+ 青绿(求货)/珊瑚(供货) 双主色。
 * 字体：标题用中文衬线(思源宋体/Songti)，正文用无衬线；离线可用系统字体。
 */
:root {
  --bg: #f7f1e6;
  --bg-2: #efe6d4;
  --card: #fffdf8;
  --ink: #2b2417;
  --ink-2: #6b5c44;
  --line: rgba(43, 36, 23, 0.12);

  --teal: #12907f;      /* 求货 */
  --teal-soft: #e4f3ef;
  --coral: #e2693d;     /* 供货 */
  --coral-soft: #fbe9e0;
  --amber: #c9a227;     /* 强调/急 */
  --gold: #f4b942;

  --rad: 16px;
  --sh: 0 8px 28px rgba(84, 60, 20, 0.10), 0 2px 6px rgba(84, 60, 20, 0.06);
  --shadow-lg: 0 20px 50px rgba(84, 60, 20, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(244, 185, 66, 0.18), transparent 60%),
    radial-gradient(900px 420px at -10% 12%, rgba(18, 144, 127, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  min-height: 100vh;
  line-height: 1.55;
}
a { color: inherit; text-decoration: none; }

.page { max-width: 1120px; margin: 0 auto; padding: 0 20px 56px; }

/* ---------- Hero ---------- */
.hero {
  margin: 22px 0 24px;
  padding: 30px 32px 26px;
  border-radius: 22px;
  color: #fff;
  background:
    radial-gradient(700px 300px at 100% -20%, rgba(255,255,255,0.22), transparent 55%),
    linear-gradient(135deg, #1f7a6d 0%, #0f5f55 45%, #103f39 100%);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "千丝";
  position: absolute; right: -18px; bottom: -40px;
  font-family: "Songti SC", "SimSun", serif;
  font-size: 150px; font-weight: 700;
  color: rgba(255,255,255,0.06);
  letter-spacing: 6px;
  pointer-events: none;
}
.hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; position: relative; z-index: 1; }
.brand { display: flex; align-items: center; gap: 18px; }
.brand-mark {
  display: grid; place-items: center;
  width: 60px; height: 60px; border-radius: 16px;
  background: var(--gold); color: #3a2c05;
  font-family: "Songti SC", "SimSun", serif; font-weight: 700; font-size: 24px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.22);
}
.brand-text h1 { margin: 0; font-family: "Noto Serif SC", "Songti SC", "SimSun", serif; font-size: 30px; letter-spacing: 1px; }
.v1 { font-size: 15px; font-weight: 400; color: var(--gold); margin-left: 5px; }
.tagline { margin: 6px 0 0; opacity: 0.94; font-size: 15px; }
.free { color: #ffe08a; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-note {
  margin: 20px 0 0; padding: 12px 16px; border-radius: 12px;
  background: rgba(255,255,255,0.12); backdrop-filter: blur(2px);
  font-size: 13.5px; line-height: 1.6; color: #eafff9;
  position: relative; z-index: 1;
}
.hero-note strong { color: #ffe08a; }

/* ---------- 面板 ---------- */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px 26px; margin: 0 0 22px; box-shadow: var(--sh); }
.panel-title { margin: 0 0 16px; font-family: "Noto Serif SC", "Songti SC", "SimSun", serif; font-size: 21px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.panel-title .sub { font-family: inherit; font-size: 13.5px; color: var(--ink-2); font-weight: 400; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; border: none; cursor: pointer; border-radius: 999px; padding: 11px 20px; font-size: 14px; font-weight: 600; transition: transform .12s, box-shadow .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary { background: linear-gradient(135deg, var(--teal), #0e6f63); color: #fff; box-shadow: 0 6px 16px rgba(18,144,127,0.3); }
.btn.primary:hover { box-shadow: 0 8px 22px rgba(18,144,127,0.4); }
.btn.ghost { background: rgba(255,255,255,0.16); color: inherit; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.4); }
.btn[disabled] { opacity: .6; cursor: not-allowed; transform: none; }

/* ---------- 规则墙 ---------- */
.rules-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.rule-card { border-radius: 16px; padding: 20px; border: 1px solid var(--line); background: #fff; }
.rule-card h3 { margin: 0 0 10px; font-size: 17px; font-family: "Noto Serif SC", "Songti SC", serif; display: flex; align-items: center; gap: 8px; }
.rule-card p { margin: 0 0 14px; color: var(--ink-2); font-size: 14px; }
.rule-card strong { color: var(--ink); }
.rule-tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.tier-free { background: var(--teal-soft); border-color: rgba(18,144,127,0.25); }
.tier-free h3 { color: var(--teal); }
.tier-free .rule-tag { background: var(--teal); color: #fff; }
.tier-assist { background: #fef6e2; border-color: rgba(201,162,39,0.3); }
.tier-assist h3 { color: #b1831a; }
.tier-assist .rule-tag { background: #f4b942; color: #4a3605; }
.tier-paid { background: var(--coral-soft); border-color: rgba(226,105,61,0.28); }
.tier-paid h3 { color: var(--coral); }
.tier-paid .rule-tag { background: var(--coral); color: #fff; }
.rules-extra { margin-top: 18px; padding: 16px 18px; background: #faf6ec; border: 1px dashed var(--line); border-radius: 14px; font-size: 14px; color: var(--ink-2); }
.rules-extra p { margin: 0 0 8px; }
.rules-extra strong { color: var(--ink); }
.legend { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px !important; font-size: 12.5px; }
.dot { display: inline-flex; align-items: center; gap: 6px; }
.dot::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: #bbb; }
.dot-anchor::before { background: #8aa7a0; }
.dot-matched::before { background: var(--teal); opacity: .45; }
.dot-expired::before { background: #b9b0a0; opacity: .5; }

/* ---------- 目录 ---------- */
.catalog-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.catalog-meta { color: var(--ink-2); font-size: 13px; margin: -6px 0 16px; }
.filters { display: grid; grid-template-columns: auto 1fr 1fr 1fr; gap: 14px; align-items: end; padding: 16px; border-radius: 16px; background: #faf5ea; border: 1px solid var(--line); margin-bottom: 20px; }
.seg { display: inline-flex; background: #efe7d6; border-radius: 999px; padding: 4px; gap: 2px; }
.seg-btn { border: none; background: transparent; padding: 9px 18px; border-radius: 999px; cursor: pointer; font-size: 14px; color: var(--ink-2); font-weight: 600; transition: all .15s; }
.seg-btn.is-active { background: var(--ink); color: #fff; box-shadow: 0 4px 10px rgba(43,36,23,0.2); }

.field { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--ink-2); }
.field span { font-weight: 600; }
.field input, .field select, .field textarea {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  font-size: 14px; background: #fff; color: var(--ink); font-family: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(18,144,127,0.12); }
.field.wide { grid-column: 1 / -1; }

/* ---------- 卡片 ---------- */
.cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 18px; box-shadow: var(--sh); transition: transform .15s, box-shadow .15s; display: flex; flex-direction: column; gap: 10px; }
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(84,60,20,0.16); }
.card-top { display: flex; justify-content: space-between; align-items: center; }
.badge { font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; color: #fff; }
.type-demand .badge { background: var(--teal); }
.type-supply .badge { background: var(--coral); }
.urgency { font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.u-emergency { background: #ffe1e0; color: #b3271f; }
.u-7d { background: #fff0d4; color: #a8740b; }
.u-30d { background: #e6f1fb; color: #2e6ca3; }
.u-long { background: #eaf2ec; color: #3a7a52; }
.card-title { margin: 0; font-size: 18px; font-family: "Noto Serif SC", "Songti SC", serif; }
.card-route { margin: 0; color: var(--ink-2); font-size: 14px; }
.arrow { color: var(--coral); font-weight: 700; }
.card-body { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.kv { display: flex; flex-direction: column; font-size: 12px; }
.kv span { color: var(--ink-2); }
.kv b { color: var(--ink); font-size: 14px; font-weight: 600; }
.note { grid-column: 1 / -1; font-size: 13px; color: var(--ink-2); background: #faf6ec; border-radius: 10px; padding: 8px 10px; }
.card-foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 8px; border-top: 1px solid var(--line); padding-top: 12px; font-size: 12px; color: var(--ink-2); }
.contact { max-width: 60%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { text-align: center; color: var(--ink-2); padding: 40px 20px; font-size: 14px; }

/* ---------- 即时选项 ---------- */
.quick-intro { color: var(--ink-2); font-size: 14px; margin: -6px 0 16px; max-width: 720px; }
.quick-step { margin-top: 16px; padding: 18px; border-radius: 16px; background: #fef6e2; border: 1px solid rgba(201,162,39,0.3); }
.quick-q { font-size: 15px; margin: 0 0 14px; }
.quick-q b { color: var(--coral); }
.quick-options { display: flex; gap: 12px; flex-wrap: wrap; }
.quick-opt { border: 1px solid var(--line); background: #fff; padding: 12px 20px; border-radius: 12px; cursor: pointer; font-size: 15px; font-weight: 600; transition: all .15s; }
.quick-opt:hover { border-color: var(--teal); }
.quick-opt.is-active { background: var(--teal); color: #fff; border-color: var(--teal); box-shadow: 0 6px 16px rgba(18,144,127,0.3); }
.quick-result { margin: 16px 0 0; font-size: 13.5px; color: var(--ink-2); }
.quick-result b { color: var(--teal); }

/* ---------- 表单 ---------- */
.form { background: #fcf8f0; border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.radio-group { border: none; margin: 0 0 16px; padding: 0; display: flex; gap: 18px; }
.radio-group legend { font-size: 13px; color: var(--ink-2); margin: 0 0 8px; font-weight: 600; }
.radio { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px; background: #fff; transition: all .15s; }
.radio input { accent-color: var(--teal); }
.radio:has(input:checked) { border-color: var(--teal); background: var(--teal-soft); color: var(--teal); font-weight: 600; }
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.form-actions { margin-top: 18px; display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.form-hint { font-size: 12.5px; color: var(--ink-2); }
.form-msg { margin-top: 14px; padding: 11px 14px; border-radius: 12px; font-size: 13.5px; display: none; }
.form-msg.error { display: block; background: #ffe9e6; color: #b3271f; }
.form-msg.ok { display: block; background: #e4f5ec; color: #22754a; }
.form-msg.info { display: block; background: #f0eef8; color: #4a3ea0; }

.footer { text-align: center; color: var(--ink-2); font-size: 12.5px; margin-top: 8px; }
.footer p { margin: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .rules-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .filters { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .page { padding: 0 12px 40px; }
  .hero { padding: 22px 20px; }
  .brand-mark { width: 48px; height: 48px; font-size: 20px; }
  .brand-text h1 { font-size: 24px; }
  .cards { grid-template-columns: 1fr; }
  .filters { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .panel { padding: 18px 16px; }
  .radio-group { flex-direction: column; gap: 8px; align-items: stretch; }
}