:root {
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-quiet: #e8eee9;
  --fg: #151815;
  --muted: #5d675f;
  --border: rgba(21, 24, 21, 0.12);
  --accent: #245a46;
  --accent-strong: #153d31;
  --accent-soft: #dce8df;
  --warn: #9a6a12;
  --danger: #b33a32;
  --success: #23714d;
  --shadow: 0 18px 54px rgba(22, 36, 28, 0.08);
  --radius: 8px;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Songti SC", "STSong", "Noto Serif CJK SC", "Georgia", serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.55;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(21, 24, 21, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 24, 21, 0.024) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 62%);
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
}

.app-shell {
  min-height: 100vh;
}

.login-view {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 72px;
  align-items: center;
  width: min(1080px, calc(100vw - 40px));
  margin: 0 auto;
}

.site-label,
.eyebrow {
  margin: 0 0 20px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 620;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.login-copy h1,
.hero h1 {
  margin: 0;
  max-width: 780px;
  font-family: var(--font-display);
  font-size: clamp(40px, 5.4vw, 64px);
  line-height: 1.04;
  letter-spacing: 0;
  font-weight: 500;
  overflow-wrap: anywhere;
}

.login-copy p:not(.site-label),
.hero p {
  max-width: 62ch;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.login-panel,
.panel,
.skill-detail,
.proposal-card {
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.login-panel {
  padding: 28px;
}

label span,
.field-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 620;
  letter-spacing: 0.06em;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--fg);
  padding: 12px 13px;
  outline: none;
}

textarea {
  min-height: 220px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
}

input:focus,
textarea:focus,
select:focus {
  border-color: color-mix(in srgb, var(--accent) 58%, var(--border));
  box-shadow: 0 0 0 3px rgba(36, 90, 70, 0.13);
}

.check-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 18px 0;
}

.check-row input {
  width: 16px;
  height: 16px;
}

.check-row span {
  margin: 0;
  letter-spacing: 0;
  font-size: 14px;
  color: var(--fg);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.hero-actions {
  margin-top: 22px;
}

button,
.button-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 7px;
  background: var(--accent);
  color: white;
  padding: 10px 15px;
  font-size: 14px;
  font-weight: 620;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

button:disabled,
.button-link[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
}

button:hover,
.button-link:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

button:disabled:hover {
  background: var(--accent);
  transform: none;
}

button.secondary,
.button-link.secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}

button.secondary:hover,
.button-link.secondary:hover {
  background: var(--surface-quiet);
}

button.danger {
  background: var(--danger);
}

.form-error,
.notice {
  margin: 14px 0 0;
  color: var(--danger);
  font-size: 13px;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(244, 247, 245, 0.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 640;
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--accent-strong);
  color: #f7f8f3;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 18px;
}

.nav-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: flex-end;
}

.workspace {
  width: min(1180px, calc(100vw - 36px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: end;
  margin-bottom: 42px;
}

.stats-strip {
  border-left: 1px solid var(--border);
  padding-left: 26px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 52px;
  line-height: 1;
  letter-spacing: 0;
}

.stats-strip .notice {
  margin-top: 14px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 12px;
  margin-bottom: 22px;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.skill-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 220px;
  padding: 20px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.skill-card:hover {
  transform: translateY(-2px);
  border-color: rgba(36, 90, 70, 0.34);
  background: var(--surface);
  box-shadow: 0 16px 42px rgba(22, 36, 28, 0.08);
}

.card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.category {
  color: var(--accent);
  font-size: 12px;
  font-weight: 620;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.line-count,
.status {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.skill-card h2,
.skill-detail h1,
.proposal-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 27px;
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 500;
}

.skill-card p,
.proposal-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.skill-detail {
  padding: 28px;
}

.detail-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.package-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.package-summary div {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent-soft) 55%, var(--surface));
}

.package-summary strong,
.package-summary span {
  display: block;
  overflow-wrap: anywhere;
}

.package-summary strong {
  color: var(--accent-strong);
  font-size: 18px;
  line-height: 1.25;
}

.package-summary span {
  margin-top: 5px;
  color: var(--muted);
  font-size: 12px;
}

.file-list-panel {
  margin: 0 0 18px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 12px;
}

.section-head .notice {
  max-width: 58ch;
  margin: 0;
}

.file-list {
  display: grid;
  max-height: 260px;
  overflow: auto;
  border-top: 1px solid var(--border);
}

.file-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
}

.file-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.file-row small {
  flex: 0 0 auto;
  color: var(--muted);
}

.markdown-view,
.diff-view {
  overflow: auto;
  max-height: 58vh;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #181a17;
  color: #f0f2ed;
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
}

.form-grid {
  display: grid;
  gap: 14px;
}

.two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.proposal-card {
  padding: 20px;
  margin-bottom: 14px;
}

.management-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: start;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.status-panel {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.status-panel h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 500;
}

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-top: 1px solid var(--border);
}

.status-row span {
  color: var(--muted);
  font-size: 13px;
}

.status-row strong {
  font-size: 13px;
  font-weight: 640;
  text-align: right;
  overflow-wrap: anywhere;
}

.status-errors {
  margin-top: 4px;
}

.section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 500;
}

.compact-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.compact-row h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
}

.compact-row p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.compact-row button {
  flex: 0 0 auto;
}

.danger-row {
  border-color: rgba(179, 58, 50, 0.34);
}

.empty-state {
  padding: 42px 0;
  color: var(--muted);
}

@media (max-width: 860px) {
  .login-view,
  .hero,
  .toolbar,
  .management-grid,
  .status-grid,
  .two-cols,
  .package-summary {
    grid-template-columns: 1fr;
  }

  body::before {
    background-size: 36px 36px;
  }

  .login-view {
    width: min(100% - 28px, 560px);
    gap: 28px;
    min-height: auto;
    padding: 38px 0;
  }

  .login-copy h1,
  .hero h1 {
    font-size: clamp(34px, 10vw, 48px);
  }

  .login-copy p:not(.site-label),
  .hero p {
    font-size: 15px;
  }

  .login-panel,
  .skill-detail,
  .proposal-card,
  .file-list-panel {
    padding: 18px;
  }

  .topbar {
    position: static;
  }

  .topbar-inner,
  .workspace {
    width: min(100% - 24px, 680px);
  }

  .workspace {
    padding: 28px 0 48px;
  }

  .hero {
    gap: 22px;
    margin-bottom: 26px;
  }

  .skill-grid {
    grid-template-columns: 1fr;
  }

  .skill-card {
    min-height: 0;
    padding: 18px;
  }

  .stats-strip {
    border-left: 0;
    border-top: 1px solid var(--border);
    padding: 22px 0 0;
  }

  .detail-head,
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-actions {
    justify-content: flex-start;
  }

  .nav-actions .button-link,
  .nav-actions button {
    min-height: 36px;
    padding: 8px 11px;
    font-size: 13px;
  }

  .button-link,
  button {
    min-height: 40px;
  }

  .button-row {
    width: 100%;
  }

  .button-row .button-link,
  .button-row button {
    flex: 1 1 150px;
  }

  .section-head,
  .compact-row,
  .status-row {
    flex-direction: column;
  }

  .markdown-view,
  .diff-view {
    max-height: 54vh;
    padding: 14px;
    font-size: 12px;
  }
}

@media (max-width: 430px) {
  .login-copy h1,
  .hero h1 {
    max-width: 10em;
    font-size: 30px;
    line-height: 1.12;
  }

  .brand span:last-child {
    display: none;
  }

  .card-top {
    flex-direction: column;
    gap: 6px;
  }

  .line-count,
  .status {
    white-space: normal;
  }
}