:root {
  --bg: #f5f0e4;
  --paper: rgba(255, 252, 244, 0.92);
  --paper-strong: #fffaf0;
  --ink: #17212b;
  --muted: #62707d;
  --line: rgba(23, 33, 43, 0.12);
  --blue: #0457d8;
  --blue-strong: #003b97;
  --blue-soft: rgba(4, 87, 216, 0.1);
  --amber: #f97316;
  --amber-soft: rgba(249, 115, 22, 0.14);
  --green: #12805c;
  --danger: #b42318;
  --shadow: 0 28px 70px rgba(35, 42, 51, 0.14);
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 24px;
  color: var(--ink);
  font-family: "Bahnschrift", "DIN Alternate", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 8% 0%, rgba(249, 115, 22, 0.26), transparent 25rem),
    radial-gradient(circle at 90% 8%, rgba(4, 87, 216, 0.24), transparent 27rem),
    linear-gradient(135deg, #fbf4e8 0%, #eef5f8 48%, #f7efe1 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 33, 43, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 33, 43, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent);
}

code {
  padding: 0.12rem 0.35rem;
  border-radius: 0.5rem;
  background: rgba(23, 33, 43, 0.08);
  font-family: "Cascadia Code", "Consolas", monospace;
}

.page-shell {
  width: min(1680px, 100%);
  margin: 0 auto;
}

.hero,
.layout {
  display: grid;
  gap: 24px;
}

.hero {
  grid-template-columns: minmax(0, 1.7fr) minmax(340px, 0.7fr);
  align-items: stretch;
  margin-bottom: 24px;
  animation: rise 420ms ease-out both;
}

.hero-copy,
.hero-card,
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-copy {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 44px);
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -110px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(4, 87, 216, 0.18), rgba(249, 115, 22, 0.18));
}

.eyebrow,
.section-kicker {
  margin: 0 0 8px;
  color: var(--blue-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero h1 {
  position: relative;
  z-index: 1;
  max-width: 15ch;
  margin: 0;
  font-size: clamp(38px, 5vw, 76px);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.hero-text {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.72);
}

.hero-card {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: 28px;
  background:
    linear-gradient(145deg, rgba(4, 87, 216, 0.08), rgba(249, 115, 22, 0.12)),
    var(--paper-strong);
}

.hero-card-line,
.meta-list div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.hero-card-line:last-child,
.meta-list div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.hero-card-line span,
.meta-list span {
  color: var(--muted);
}

.hero-card-line strong,
.meta-list strong {
  text-align: right;
}

.layout {
  grid-template-columns: minmax(0, 1.25fr) minmax(420px, 0.8fr);
  align-items: start;
}

.panel {
  padding: clamp(18px, 2vw, 28px);
  animation: rise 520ms ease-out both;
}

.preview-panel {
  position: sticky;
  top: 20px;
}

.section-head,
.block-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  margin-bottom: 18px;
}

.section-head h2,
.block-head h3 {
  margin: 0;
  letter-spacing: -0.03em;
}

.section-head h2 {
  font-size: 28px;
}

.block-head h3 {
  font-size: 22px;
}

.section-head p,
.block-head p {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.form-block {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.notice {
  display: grid;
  gap: 6px;
  margin: 16px 0 20px;
  padding: 16px 18px;
  border: 1px solid transparent;
  border-radius: 20px;
}

.notice strong {
  font-size: 14px;
}

.notice span {
  color: var(--muted);
  line-height: 1.65;
}

.notice-info {
  border-color: rgba(4, 87, 216, 0.18);
  background: var(--blue-soft);
}

.notice-warn {
  border-color: rgba(249, 115, 22, 0.22);
  background: var(--amber-soft);
}

.grid {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}

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

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.field > span {
  font-size: 14px;
  font-weight: 800;
}

.field-inline {
  grid-template-columns: auto minmax(180px, 1fr);
  align-items: center;
  margin-bottom: 0;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  font: inherit;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.field textarea {
  resize: vertical;
  line-height: 1.55;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 0;
  border-color: rgba(4, 87, 216, 0.5);
  box-shadow: 0 0 0 4px rgba(4, 87, 216, 0.12);
}

.checkbox-field {
  grid-template-columns: 20px 1fr;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
}

.checkbox-field input {
  width: 18px;
  height: 18px;
  margin: 0;
}

.chip-grid,
.template-grid,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  cursor: pointer;
}

.chip input {
  width: 14px;
  height: 14px;
  margin: 0;
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.template-card {
  display: grid;
  gap: 10px;
  min-height: 178px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    linear-gradient(150deg, rgba(255, 255, 255, 0.92), rgba(255, 250, 240, 0.7)),
    var(--paper-strong);
}

.template-card h4 {
  margin: 0;
  font-size: 18px;
}

.template-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.template-card button {
  align-self: end;
  justify-self: start;
}

.advanced {
  margin-top: 12px;
  padding: 16px;
  border: 1px dashed var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.5);
}

.advanced summary {
  cursor: pointer;
  font-weight: 900;
}

.advanced[open] summary {
  margin-bottom: 16px;
}

.action-row {
  margin-top: 14px;
  margin-bottom: 16px;
}

.action-row.compact {
  align-items: center;
}

.btn {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 11px 18px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(4, 87, 216, 0.22);
  box-shadow: 0 12px 30px rgba(35, 42, 51, 0.12);
}

.btn-primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), #023d9f);
}

.btn-accent {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--amber), #dc4d12);
}

.btn-danger {
  color: var(--danger);
}

.btn-small {
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 13px;
}

.file-btn {
  position: relative;
  overflow: hidden;
}

.file-btn input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.meta-list {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.preview-panel textarea {
  min-height: 220px;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 13px;
}

#statusOutput {
  min-height: 120px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1280px) {
  .hero,
  .layout {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    position: static;
  }

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

@media (max-width: 780px) {
  body {
    padding: 14px;
  }

  .hero-copy,
  .hero-card,
  .panel {
    border-radius: 20px;
  }

  .two-col,
  .three-col,
  .template-grid {
    grid-template-columns: 1fr;
  }

  .section-head,
  .block-head,
  .hero-card-line,
  .meta-list div {
    align-items: start;
    flex-direction: column;
  }

  .action-row,
  .hero-actions {
    flex-direction: column;
  }

  .btn,
  .file-btn,
  .ghost-link {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}