:root {
  color-scheme: light;
  --bg-top: #181615;
  --bg-mid: #2d211d;
  --paper: #f6efe4;
  --panel: #fffaf2;
  --panel-2: #ffffff;
  --ink: #241915;
  --muted: #756960;
  --line: #e4d3bf;
  --accent: #9d3b25;
  --accent-dark: #71301f;
  --gold: #bd8b39;
  --ok: #247d4d;
  --danger: #9b3b31;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  background:
    linear-gradient(180deg, var(--bg-top) 0, var(--bg-mid) 300px, var(--paper) 301px, #f9f3ea 100%);
}

a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 18px 16px 54px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  color: #fff7ea;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff7ea;
  font-size: 21px;
  font-weight: 900;
}

.brand::before {
  content: "";
  width: 10px;
  height: 24px;
  border-radius: 999px;
  background: linear-gradient(180deg, #e6bd66, #a84228);
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.nav-links a {
  color: #f3dfc0;
}

.userbar {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  align-items: center;
  min-height: 34px;
  color: #e9d4b6;
  font-size: 14px;
}

.page-hero {
  padding: 34px 0 24px;
  color: #fff7ea;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  color: #e2b55d;
  font-size: 13px;
  font-weight: 900;
}

.page-hero h1 {
  margin: 10px 0 0;
  font-size: 40px;
  line-height: 1.18;
  letter-spacing: 0;
}

.page-hero p {
  max-width: 690px;
  margin: 12px auto 0;
  color: #dfcab0;
  font-size: 16px;
  line-height: 1.75;
}

.paipan-card {
  border: 1px solid rgba(164, 116, 62, .36);
  border-radius: 12px;
  background: var(--panel);
  box-shadow: 0 22px 48px rgba(30, 22, 18, .18);
  padding: 22px;
}

.paipan-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.paipan-head h2 {
  margin: 6px 0 0;
  font-size: 25px;
  letter-spacing: 0;
}

.member-pill {
  min-width: 230px;
  border: 1px solid #e5c894;
  border-radius: 10px;
  background: linear-gradient(180deg, #fff8e8, #fff0d2);
  padding: 11px 13px;
}

.member-pill b {
  display: block;
  color: var(--accent-dark);
  font-size: 15px;
}

.member-pill span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0 14px;
}

.mode-tab {
  width: 100%;
  margin-top: 0;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  color: var(--muted);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.mode-tab.active {
  border-color: var(--accent);
  background: linear-gradient(180deg, #a9422b, #7d2e1f);
  color: #fff7ea;
  box-shadow: 0 8px 16px rgba(125, 46, 31, .18);
}

.notice {
  margin: 14px 0 18px;
  padding: 11px 13px;
  border: 1px solid #ecd4a0;
  border-radius: 8px;
  background: #fff8e8;
  color: #6e5421;
  font-size: 14px;
  line-height: 1.7;
}

.calc-form {
  display: none;
}

.calc-form.active {
  display: block;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.wide { grid-column: span 2; }

label {
  display: block;
  color: #352721;
  font-size: 14px;
  font-weight: 800;
}

input,
textarea,
select {
  width: 100%;
  margin-top: 7px;
  border: 1px solid #dac8b2;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-weight: 400;
  padding: 11px 12px;
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(157, 59, 37, .12);
}

textarea {
  min-height: 112px;
  resize: vertical;
  line-height: 1.65;
}

button,
.primary-submit {
  width: 100%;
  margin-top: 16px;
  border: 0;
  border-radius: 9px;
  background: linear-gradient(180deg, #b34b31, #85311f);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  padding: 12px 14px;
}

button:hover,
.primary-submit:hover {
  filter: brightness(.96);
}

.output {
  margin-top: 24px;
}

.result-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
  box-shadow: 0 16px 34px rgba(52, 36, 24, .1);
  padding: 24px;
}

.result-card h2 {
  margin: 0;
  padding-right: 100px;
  color: var(--accent-dark);
  font-size: 25px;
}

.score {
  position: absolute;
  top: 20px;
  right: 22px;
  width: 78px;
  height: 78px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #fff5dd;
}

.score span {
  display: block;
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.score b {
  display: block;
  margin-top: -12px;
  color: #755313;
  font-size: 12px;
}

.result-section {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.result-section h3,
.system-list h3 {
  margin: 0 0 9px;
  color: #35231c;
  font-size: 17px;
}

.result-section ul {
  margin: 0;
  padding-left: 20px;
  color: #332b26;
  line-height: 1.8;
}

.result-summary {
  margin: 16px 0;
  border: 1px solid #ead5a9;
  border-radius: 10px;
  background: #fffaf0;
  padding: 14px;
}

.system-list {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.system-detail {
  overflow: hidden;
  margin: 10px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.system-detail summary {
  cursor: pointer;
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  list-style: none;
}

.system-detail summary::-webkit-details-marker {
  display: none;
}

.system-detail summary::after {
  content: "展开";
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
}

.system-detail[open] summary::after {
  content: "收起";
}

.system-detail summary b {
  color: var(--accent-dark);
}

.system-detail summary span {
  color: var(--muted);
  line-height: 1.5;
}

.system-detail ul {
  margin: 0;
  padding: 0 18px 14px 34px;
  line-height: 1.75;
}

.intro-detail {
  margin-top: 14px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  color: var(--muted);
}

.intro-detail summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 800;
}

.intro-detail p {
  margin: 10px 0 0;
  line-height: 1.7;
}

.remedy {
  margin-top: 12px;
  border: 1px solid #eadfbe;
  border-radius: 10px;
  background: #fffdf7;
  padding: 14px;
}

.remedy.locked {
  border-color: #d9b0a8;
  background: #fff6f3;
}

.remedy.unlocked {
  border-color: #b9d5bc;
  background: #f5fff6;
}

.payment-panel {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(260px, 1.2fr);
  gap: 16px;
  align-items: center;
  margin: 14px 0;
  padding: 14px;
  border: 1px solid #e7c89b;
  border-radius: 10px;
  background: linear-gradient(180deg, #fffaf0, #fff2df);
}

.payment-copy h3 {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 18px;
}

.payment-copy p {
  margin: 6px 0;
  color: var(--muted);
  line-height: 1.7;
}

.payment-apply {
  margin-top: 12px;
}

.pay-codes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.pay-codes figure {
  margin: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  text-align: center;
}

.pay-codes img {
  display: block;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
}

.pay-codes figcaption {
  margin-top: 8px;
  color: var(--ink);
  font-weight: 800;
}

.pay-link {
  display: inline-block;
  margin-top: 8px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 11px;
}

.login-box,
.admin-box {
  max-width: 960px;
  margin: 20px auto;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-2);
  padding: 20px;
}

.login-box h1,
.admin-box h1 {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 26px;
}

.inline-panel,
.panel {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fffdf8;
  padding: 16px;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  background: #fff;
}

.user-table th,
.user-table td {
  border: 1px solid var(--line);
  padding: 9px;
  text-align: left;
  font-size: 14px;
}

.user-table th {
  background: #f4eee5;
}

.table-action button {
  margin: 0;
  border-radius: 7px;
  padding: 7px 10px;
  white-space: nowrap;
}

.error {
  border: 1px solid #e3a4a4;
  background: #fff0f0;
  color: #8a1f1f;
  padding: 14px;
}

@media (max-width: 820px) {
  .shell {
    padding: 14px 12px 36px;
  }

  .site-nav,
  .paipan-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-hero {
    text-align: left;
  }

  .page-hero h1 {
    font-size: 31px;
  }

  .member-pill {
    width: 100%;
    min-width: 0;
  }

  .mode-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .field-grid,
  .payment-panel,
  .pay-codes {
    grid-template-columns: 1fr;
  }

  .wide {
    grid-column: span 1;
  }

  .result-card h2 {
    padding-right: 0;
  }

  .score {
    position: static;
    margin-bottom: 12px;
  }

  .system-detail summary {
    grid-template-columns: 1fr;
  }
}