:root {
  --bg: #f4f7f4;
  --card: #ffffff;
  --text: #17231a;
  --muted: #647067;
  --primary: #1f7a3a;
  --primary-dark: #135227;
  --line: #dce5dd;
  --shadow: 0 18px 45px rgba(23, 35, 26, 0.11);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(31, 122, 58, 0.18), transparent 35%),
    linear-gradient(135deg, #f8fbf8, var(--bg));
}

.home {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.hero-card {
  width: min(760px, 100%);
  padding: clamp(28px, 6vw, 70px);
  text-align: center;
  background: rgba(255, 255, 255, 0.91);
  border: 1px solid var(--line);
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.home-logo {
  width: min(230px, 58vw);
  height: auto;
  margin-bottom: 26px;
}

h1, h2, h3 { margin-top: 0; line-height: 1.15; }
h1 { font-size: clamp(2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { margin-top: 28px; color: var(--primary-dark); }

.subtitle {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 34px;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.primary-button,
.back-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border-radius: 999px;
  color: #fff;
  background: var(--primary);
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}

.primary-button:hover,
.back-link:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px clamp(16px, 4vw, 48px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.page-header h1 {
  margin: 12px 0 0;
  font-size: clamp(1.45rem, 3vw, 2.4rem);
}

.small-logo {
  width: 82px;
  height: auto;
  flex: 0 0 auto;
}

.back-link {
  min-height: 38px;
  padding: 8px 16px;
  font-size: 0.92rem;
}

.page-layout {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 60px;
  display: grid;
  gap: 24px;
}

.content-card {
  padding: clamp(18px, 3vw, 30px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 12px 28px rgba(23, 35, 26, 0.08);
}

.table-scroll { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th, td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--primary-dark);
  background: #edf6ee;
  font-size: 0.92rem;
}

tr:last-child td { border-bottom: 0; }

.bracket {
  display: grid;
  grid-template-columns: repeat(4, minmax(190px, 1fr));
  gap: 16px;
}

.bracket-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff, #f5faf6);
}

.bracket-card strong { color: var(--primary-dark); }
.bracket-card span,
.bracket-card small { color: var(--muted); }

@media (max-width: 860px) {
  .button-grid,
  .bracket { grid-template-columns: 1fr; }

  .page-header {
    align-items: flex-start;
  }

  .small-logo { width: 62px; }
}

.hint {
  color: var(--muted);
  margin: 0 0 14px;
}

code {
  padding: 2px 6px;
  border-radius: 7px;
  background: #edf6ee;
  color: var(--primary-dark);
}

.result-input {
  width: min(260px, 100%);
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit;
  background: #fff;
}

.result-input:focus {
  outline: 2px solid rgba(31, 122, 58, 0.25);
  border-color: var(--primary);
}

.tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.secondary-button {
  min-height: 40px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--primary-dark);
  font-weight: 700;
  cursor: pointer;
}

.login-card label {
  display: grid;
  gap: 0.4rem;
  text-align: left;
  font-weight: 700;
  color: #1f2937;
  margin: 0.8rem 0;
}

.login-card input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  font: inherit;
}

.error-box {
  background: #fee2e2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 0.75rem 1rem;
  border-radius: 12px;
}

.login-info {
  color: #475569;
  margin: 0.4rem 0 1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.danger {
  border-color: #fecaca;
  color: #991b1b;
}

.result-input:disabled {
  background: #f8fafc;
  color: #64748b;
}

.waiting-box{padding:20px;border-radius:10px;background:#f5f7fa;border:1px solid #d9e1ea;text-align:center;font-size:1rem;line-height:1.6;}