:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #69707a;
  --line: #dfe3e8;
  --primary: #1463ff;
  --primary-dark: #0f4dcc;
  --ok: #148f55;
  --warning: #b86b00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  padding: 10px 14px;
}

button:hover {
  background: var(--primary-dark);
}

.plain-link {
  color: var(--primary);
  text-decoration: none;
}

button:disabled {
  background: #b7c2d0;
  cursor: not-allowed;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 32px auto;
}

.login-panel,
.dashboard {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
}

.login-panel {
  display: grid;
  gap: 28px;
  grid-template-columns: 1.1fr 1fr;
  align-items: end;
}

.eyebrow {
  color: var(--primary);
  font-size: 13px;
  margin: 0 0 8px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: 34px;
  margin-bottom: 12px;
}

h2 {
  font-size: 28px;
  margin-bottom: 0;
}

.muted {
  color: var(--muted);
}

.login-form label,
.controls label {
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.phone-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

input,
select {
  border: 1px solid var(--line);
  border-radius: 6px;
  min-height: 42px;
  padding: 8px 10px;
  width: 100%;
}

.form-error {
  color: #c52f2f;
  min-height: 20px;
  margin: 8px 0 0;
}

.hidden {
  display: none !important;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
}

.student-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  padding: 8px 12px;
  white-space: nowrap;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.status-strip div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
}

.status-strip span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 6px;
}

.status-strip strong {
  font-size: 22px;
}

.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.content-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 18px;
}

.guide,
.episodes,
.result-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.section-title {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.section-title span {
  font-weight: 700;
}

.section-title button {
  padding: 8px 10px;
}

.guide-body {
  color: #303741;
  line-height: 1.7;
}

.guide-body h3 {
  font-size: 17px;
  margin: 18px 0 8px;
}

.episode-list {
  display: grid;
  gap: 10px;
}

.episode-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 12px;
  grid-template-columns: 72px 1fr auto;
  padding: 14px;
  align-items: center;
}

.episode-no {
  color: var(--muted);
  font-weight: 700;
}

.episode-main a {
  color: var(--primary);
  display: inline-block;
  margin-bottom: 6px;
  text-decoration: none;
}

.episode-meta {
  color: var(--muted);
  font-size: 13px;
}

.badge {
  border-radius: 999px;
  display: inline-block;
  font-size: 13px;
  padding: 5px 9px;
}

.badge.pending {
  background: #fff7e8;
  color: var(--warning);
}

.badge.uploaded {
  background: #e9f8f0;
  color: var(--ok);
}

.upload-box {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.upload-box input {
  max-width: 220px;
}

.result-panel {
  margin-top: 18px;
  background: #f8fbff;
}

.admin-login {
  align-items: end;
  grid-template-columns: 1fr auto;
  margin-top: 20px;
}

.admin-grid {
  display: grid;
  gap: 18px;
}

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

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

th,
td {
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 700;
}

.path-cell {
  overflow-wrap: anywhere;
}

.company-keys {
  display: grid;
  gap: 8px;
  margin: 12px 0;
}

.company-key {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #303741;
  font-size: 13px;
  overflow-wrap: anywhere;
  padding: 10px;
}

@media (max-width: 820px) {
  .login-panel,
  .content-grid,
  .status-strip,
  .controls {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .episode-item {
    grid-template-columns: 1fr;
  }

  .upload-box {
    justify-items: stretch;
  }
}