:root {
  --bg: #eff4ff;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-strong: #ffffff;
  --dark: #0f1420;
  --dark-soft: #171d2a;
  --dark-line: rgba(255, 255, 255, 0.08);
  --text: #16233d;
  --muted: #62738e;
  --primary: #2d65ff;
  --primary-2: #1bb9a4;
  --accent: #ffa85d;
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(15, 23, 42, 0.16);
  --shadow: 0 24px 60px rgba(25, 58, 117, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Trebuchet MS", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(45, 101, 255, 0.17), transparent 30%),
    radial-gradient(circle at top right, rgba(27, 185, 164, 0.14), transparent 24%),
    linear-gradient(180deg, #edf3ff 0%, #f6f8fb 46%, #f6f8fb 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.38) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.38) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 84%);
}

a {
  color: inherit;
  text-decoration: none;
}

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

code,
pre {
  font-family: Consolas, "Courier New", monospace;
}

.site-shell {
  position: relative;
  z-index: 1;
  width: min(1400px, calc(100vw - 28px));
  margin: 18px auto 38px;
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

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

.breadcrumbs {
  color: var(--muted);
  font-size: 14px;
}

.nav-button,
.copy-button,
.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
  font-weight: 700;
  white-space: nowrap;
}

.nav-button,
.action-button.secondary {
  background: rgba(45, 101, 255, 0.08);
  color: var(--primary);
}

.copy-button,
.action-button.primary {
  background: linear-gradient(135deg, var(--primary), #4b84ff);
  color: #fff;
  box-shadow: 0 14px 26px rgba(45, 101, 255, 0.18);
}

.action-button.ghost {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  border: 1px solid var(--line);
}

.nav-button:hover,
.copy-button:hover,
.action-button:hover,
.tool-link:hover {
  transform: translateY(-1px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(320px, 0.84fr);
  gap: 20px;
  margin-bottom: 22px;
}

.hero-card,
.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.58);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-xl);
}

.hero-main,
.panel {
  padding: 24px;
}

.hero-main {
  position: relative;
  overflow: hidden;
  padding: 34px;
}

.hero-main::after {
  content: attr(data-ghost);
  position: absolute;
  right: -16px;
  bottom: -40px;
  font-size: clamp(90px, 16vw, 176px);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(45, 101, 255, 0.08);
  pointer-events: none;
}

.hero-side {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    linear-gradient(140deg, rgba(22, 35, 61, 0.98), rgba(22, 35, 61, 0.88)),
    linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #eef5ff;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--primary);
  background: rgba(45, 101, 255, 0.08);
  border-radius: 999px;
  padding: 8px 14px;
}

.section-kicker {
  color: var(--primary);
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 0 0 6px rgba(45, 101, 255, 0.08);
}

.section-kicker::before {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  box-shadow: none;
}

h1 {
  margin: 18px 0 14px;
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1.03;
  letter-spacing: -0.04em;
}

h2 {
  margin: 14px 0 10px;
  font-size: 28px;
  letter-spacing: -0.03em;
}

h3 {
  margin: 0;
  font-size: 18px;
}

.lead,
.panel-intro,
.tool-desc,
.helper-text,
.feature-card p,
.hero-side p,
.message {
  line-height: 1.72;
}

.lead,
.panel-intro,
.tool-desc,
.helper-text,
.feature-card p,
.message {
  color: var(--muted);
}

.hero-side p {
  color: rgba(238, 245, 255, 0.76);
}

.chip-row {
  margin-top: 22px;
}

.chip,
.ghost-chip,
.mini-stat,
.tool-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  font-weight: 600;
}

.ghost-chip {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.08);
  color: #f3f8ff;
}

.stats-grid {
  margin-top: 20px;
}

.mini-stat {
  min-width: calc(50% - 6px);
  flex-direction: column;
  align-items: flex-start;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.08);
  color: #f7fbff;
}

.mini-stat strong {
  font-size: 24px;
  line-height: 1;
}

.mini-stat span {
  margin-top: 6px;
  font-size: 13px;
  color: rgba(238, 245, 255, 0.74);
}

.feature-grid,
.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.feature-card,
.link-card {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  border-radius: 18px;
  padding: 18px;
}

.link-card strong {
  display: block;
  font-size: 20px;
  margin-bottom: 8px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.76fr);
  gap: 20px;
}

.generator-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 20px;
}

.generator-page {
  overflow: hidden;
}

.generator-page .site-shell {
  height: calc(100vh - 24px);
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
}

.generator-page .generator-layout {
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.generator-page .sidebar-panel,
.generator-page .generator-main-scroll {
  height: 100%;
  min-height: 0;
}

.generator-page .sidebar-panel,
.generator-page .generator-main-scroll {
  overflow: hidden;
}

.generator-page .generator-main-scroll {
  overflow-y: auto;
  padding-right: 6px;
}

.generator-page .generator-main-scroll::-webkit-scrollbar {
  width: 8px;
}

.generator-page .generator-main-scroll::-webkit-scrollbar-thumb {
  background: rgba(90, 132, 255, 0.34);
  border-radius: 999px;
}

.sidebar-panel {
  background: var(--dark);
  color: #eef4ff;
  border: 1px solid var(--dark-line);
  box-shadow: 0 24px 60px rgba(4, 8, 16, 0.34);
}

.sidebar-panel .section-kicker,
.sidebar-panel .panel-intro {
  color: rgba(237, 244, 255, 0.72);
}

.sidebar-panel .section-kicker::before {
  background: linear-gradient(90deg, #4f83ff, #1bb9a4);
}

.sidebar-scroll {
  max-height: calc(100vh - 80px);
  overflow: auto;
  padding-right: 6px;
}

.sidebar-scroll::-webkit-scrollbar,
.code-block::-webkit-scrollbar,
.preview-stage::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.sidebar-scroll::-webkit-scrollbar-thumb,
.code-block::-webkit-scrollbar-thumb,
.preview-stage::-webkit-scrollbar-thumb {
  background: rgba(90, 132, 255, 0.34);
  border-radius: 999px;
}

.menu-group + .menu-group {
  margin-top: 20px;
}

.menu-title {
  margin: 0 0 10px;
  color: #3eb6ff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.menu-items {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.menu-item {
  width: 100%;
  border: 0;
  background: transparent;
  color: rgba(238, 244, 255, 0.92);
  padding: 9px 0;
  cursor: pointer;
  text-align: left;
  font-size: 15px;
  line-height: 1.45;
}

.menu-item.active {
  color: #ffffff;
  font-weight: 700;
}

.menu-item:hover {
  color: #89b7ff;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field.full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  padding: 12px 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field textarea {
  min-height: 108px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(45, 101, 255, 0.34);
  box-shadow: 0 0 0 4px rgba(45, 101, 255, 0.1);
}

.field input[type="range"] {
  padding: 0;
  accent-color: var(--primary);
}

.field .value-line {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.checkbox-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 28px;
}

.checkbox-line input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.preview-stage {
  margin-top: 18px;
  min-height: 320px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(245, 248, 252, 0.92)),
    linear-gradient(135deg, rgba(45, 101, 255, 0.05), rgba(27, 185, 164, 0.05));
  padding: 24px;
  overflow: auto;
}

.preview-wrap {
  min-height: 270px;
  display: grid;
  place-items: center;
}

.demo-box,
.demo-card,
.demo-pill,
.demo-transform,
.demo-frame,
.demo-html-card {
  border-radius: 24px;
  border: 1px solid rgba(45, 101, 255, 0.08);
}

.demo-box,
.demo-card {
  width: min(100%, 340px);
  min-height: 170px;
  padding: 28px;
  display: grid;
  place-items: center;
  text-align: center;
  background: linear-gradient(135deg, #ffffff, #eef5ff);
  color: var(--text);
}

.demo-card {
  font-size: 18px;
  font-weight: 700;
}

.demo-paragraph,
.demo-pre,
.demo-list,
.demo-html-card {
  width: min(100%, 680px);
  padding: 20px;
  background: #ffffff;
  color: var(--text);
  line-height: 1.75;
}

.demo-list ul,
.demo-list ol {
  margin: 0;
  padding-left: 24px;
}

.demo-text {
  width: min(100%, 680px);
  padding: 10px 18px;
  text-align: center;
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
}

.demo-pre {
  white-space: pre-wrap;
  font-family: Consolas, "Courier New", monospace;
}

.demo-media {
  width: min(100%, 360px);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 18px 42px rgba(20, 35, 61, 0.14);
}

.demo-media img,
.demo-media video {
  display: block;
  width: 100%;
  height: auto;
}

.demo-display {
  width: min(100%, 520px);
  min-height: 180px;
  padding: 18px;
  background: #ffffff;
  border-radius: 24px;
  border: 1px solid rgba(45, 101, 255, 0.08);
}

.demo-display .item {
  min-width: 90px;
  min-height: 56px;
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(135deg, #2d65ff, #1bb9a4);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.demo-transition-box {
  width: 220px;
  min-height: 140px;
  padding: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2d65ff, #1bb9a4);
  color: #ffffff;
  font-weight: 800;
}

.demo-scene {
  width: 100%;
  display: grid;
  place-items: center;
}

.demo-transform {
  width: 220px;
  min-height: 140px;
  padding: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2d65ff, #1bb9a4);
  color: #ffffff;
  font-weight: 800;
}

.demo-html-card {
  max-width: 760px;
}

.code-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.code-block {
  margin-top: 14px;
  padding: 18px;
  border-radius: 18px;
  background: #0a1221;
  color: #dce8ff;
  font-size: 13px;
  line-height: 1.72;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.message {
  margin-top: 12px;
  font-size: 13px;
}

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

.tool-link {
  border-radius: 20px;
  padding: 20px;
  flex-direction: column;
  align-items: flex-start;
}

.tool-link strong {
  font-size: 20px;
}

.tool-link p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 1120px) {
  .hero,
  .page-grid,
  .generator-layout {
    grid-template-columns: 1fr;
  }

  .generator-page {
    overflow: auto;
  }

  .generator-page .site-shell {
    height: auto;
    display: block;
  }

  .generator-page .generator-layout {
    flex: none;
  }

  .generator-page .sidebar-panel,
  .generator-page .generator-main-scroll {
    height: auto;
    overflow: visible;
  }

  .sidebar-scroll {
    max-height: none;
  }
}

@media (max-width: 760px) {
  .site-shell {
    width: min(100vw - 16px, 1400px);
    margin: 12px auto 24px;
  }

  .hero-main,
  .hero-side,
  .panel {
    padding: 18px;
    border-radius: 20px;
  }

  .field-grid,
  .feature-grid,
  .link-grid,
  .home-links {
    grid-template-columns: 1fr;
  }

  h2 {
    font-size: 24px;
  }

  .preview-stage {
    min-height: 260px;
    padding: 18px;
  }
}