:root {
  --bg-0: #e6fff6;
  --bg-1: #f7fffb;
  --ink-1: #0e2b2d;
  --ink-2: #345558;
  --surface: #ffffff;
  --surface-soft: #f4fffd;
  --line: #c7e7df;
  --accent-a: #22b38b;
  --accent-b: #1d88ff;
  --accent-c: #0f7f66;
  --danger: #bb2d3b;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 14px 32px rgba(18, 95, 86, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Gill Sans", "Noto Sans", sans-serif;
  color: var(--ink-1);
  background: radial-gradient(circle at 16% 8%, #ddfff4 0, transparent 42%),
    radial-gradient(circle at 90% 12%, #dcecff 0, transparent 48%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1));
  position: relative;
}

.bg-glow {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(26px);
  opacity: 0.45;
  pointer-events: none;
}

.bg-glow-a {
  width: 240px;
  height: 240px;
  top: -80px;
  right: -20px;
  background: #76d6ff;
}

.bg-glow-b {
  width: 220px;
  height: 220px;
  bottom: -90px;
  left: -60px;
  background: #6ff3ca;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 520px);
  margin: 0 auto;
  padding: 18px 14px 28px;
}

.topbar {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px 0 10px;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

.brand-subtitle {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink-2);
  line-height: 1.1;
  text-align: left;
}

.brand-lockup {
  width: 195px;
  height: auto;
  display: block;
}

.hero-card {
  margin-top: 10px;
  background: linear-gradient(138deg, #19a77f, #2479ff);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow);
}

.hero-tag {
  margin: 0 0 8px;
  font-size: 0.84rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.9;
}

.hero-card h1 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.2;
}

.hero-card p {
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.95);
}

.primary-button,
.ghost-button {
  border: 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 999px;
}

.primary-button {
  margin-top: 16px;
  padding: 12px 18px;
  background: #fff;
  color: #0f5670;
}

.ghost-button {
  padding: 9px 14px;
  background: #e7f8f2;
  color: var(--accent-c);
}

.shortcuts {
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.shortcut-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  padding: 13px;
  display: block;
  text-align: left;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(27, 91, 83, 0.08);
}

.shortcut-title,
.shortcut-subtitle {
  margin: 0;
}

.shortcut-title {
  font-size: 0.96rem;
  font-weight: 700;
}

.shortcut-subtitle {
  font-size: 0.8rem;
  color: var(--ink-2);
}

.panel {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  padding: 15px;
  box-shadow: 0 8px 18px rgba(27, 91, 83, 0.08);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.panel h2,
.panel h3 {
  margin-top: 0;
}

.panel h2 {
  margin-bottom: 10px;
  font-size: 1.12rem;
}

.panel h3 {
  margin-bottom: 8px;
  font-size: 0.98rem;
}

.infographic-viewer {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.infographic-toolbar {
  display: grid;
  gap: 10px;
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.toolbar-button,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  padding: 9px 14px;
  border-radius: 999px;
  background: #e7f8f2;
  color: var(--accent-c);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
}

.toolbar-button {
  min-width: 44px;
}

.toolbar-button:hover,
.ghost-link:hover {
  border-color: var(--accent-a);
}

.toolbar-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.toolbar-indicator {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-2);
}

.infographic-scroll {
  width: 100%;
  min-height: 72vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #f8fffd, #effaf7);
  padding: 8px;
}

.infographic-image {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 18px rgba(27, 91, 83, 0.12);
}

.infographic-hint {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.86rem;
}

.wizard-card {
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.wizard-progress {
  margin: 0;
  font-size: 0.8rem;
  color: var(--ink-2);
}

.wizard-card h3 {
  margin: 8px 0 12px;
  font-size: 1rem;
}

.wizard-helper {
  margin: -4px 0 12px;
  color: var(--ink-2);
  font-size: 0.88rem;
  line-height: 1.35;
}

.wizard-options {
  display: grid;
  gap: 8px;
}

.option-button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 11px 12px;
  text-align: left;
  font-weight: 700;
  color: var(--ink-1);
  cursor: pointer;
}

.option-button:hover {
  border-color: var(--accent-a);
}

.option-button.is-selected {
  background: linear-gradient(135deg, #e9fff6, #eaf3ff);
  border-color: var(--accent-a);
}

.status-text {
  margin: 10px 0 0;
  min-height: 1.2em;
  color: var(--ink-2);
  font-size: 0.84rem;
}

.status-text.error {
  color: var(--danger);
}

.install-shortcut-button {
  width: 100%;
  margin-top: 8px;
  padding: 12px 16px;
  background: linear-gradient(138deg, #19a77f, #2479ff);
  color: #fff;
}

.install-shortcut-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.install-status {
  margin: 10px 0 0;
  min-height: 1.2em;
  color: var(--ink-2);
  font-size: 0.86rem;
}

.install-status.is-error {
  color: var(--danger);
}

.install-guide {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.install-copy-button {
  margin-top: 10px;
}

.empty-state {
  color: var(--ink-2);
  margin: 0;
}

.list {
  margin: 0 0 12px 1.2rem;
  padding: 0;
  color: var(--ink-2);
}

.list li + li {
  margin-top: 6px;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal 520ms ease forwards;
}

.delay-1 {
  animation-delay: 80ms;
}

.delay-2 {
  animation-delay: 140ms;
}

.delay-3 {
  animation-delay: 200ms;
}

.delay-4 {
  animation-delay: 260ms;
}

.delay-5 {
  animation-delay: 320ms;
}

.delay-6 {
  animation-delay: 380ms;
}

.delay-7 {
  animation-delay: 440ms;
}

.delay-8 {
  animation-delay: 500ms;
}

.delay-9 {
  animation-delay: 560ms;
}

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

@media (min-width: 860px) {
  .app-shell {
    width: min(94vw, 1040px);
    padding: 24px 20px 36px;
  }

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

  .panel {
    margin-top: 16px;
    padding: 18px;
  }

  .infographic-scroll {
    min-height: 78vh;
  }
}