:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #687083;
  --soft: #f6f8fb;
  --line: #e7ebf1;
  --panel: #ffffff;
  --accent: #111827;
  --accent-soft: #eef3ff;
  --ai: #6d5dfc;
  --pink: #ffd8e8;
  --cyan: #d8fbff;
  --green: #dbf7dc;
  --shadow: 0 20px 70px rgba(25, 35, 54, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  background:
    linear-gradient(90deg, rgba(255, 216, 232, 0.74), rgba(244, 247, 251, 0.92) 48%, rgba(216, 251, 255, 0.82)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.18) 0 78px, rgba(17, 24, 39, 0.035) 79px 80px);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.66);
}

.nav {
  max-width: 1120px;
  min-height: 68px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: conic-gradient(from 18deg, #111827, #111827 12%, #ffffff 12% 18%, #111827 18% 30%, #ffffff 30% 36%, #111827 36% 48%, #ffffff 48% 54%, #111827 54% 66%, #ffffff 66% 72%, #111827 72% 84%, #ffffff 84% 90%, #111827 90%);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: #fff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
  white-space: nowrap;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 13px;
  border-radius: 999px;
  color: #222938;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.8);
}

.nav-links .nav-cta {
  color: #fff;
  background: var(--ink);
  padding-inline: 18px;
}

.nav-links .nav-cta:hover {
  background: #000;
}

.hero {
  max-width: 1120px;
  margin: 0 auto;
  padding: 230px 24px 34px;
}

.hero-center {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

h1 {
  margin: 0;
  color: #151b2d;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.13;
  letter-spacing: 0;
  font-weight: 640;
}

.hero-copy {
  max-width: 740px;
  margin: 24px auto 0;
  color: #667085;
  font-size: clamp(17px, 2vw, 22px);
}

.tool-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 56px;
}

.tool-shell {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.tool-top {
  min-height: 70px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tool-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tool-tab {
  min-height: 40px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #485064;
  background: transparent;
  font-weight: 750;
  cursor: pointer;
}

.tool-tab.active {
  color: var(--ink);
  background: var(--soft);
  border-color: var(--line);
}

.tool-tab:active {
  transform: translateY(1px);
}

.safe-note {
  color: #6b7280;
  font-size: 13px;
  font-weight: 750;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 326px;
  min-height: 560px;
}

.drop-zone {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 560px;
  padding: 28px;
  overflow: hidden;
  cursor: pointer;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 216, 232, 0.75), transparent 28%),
    radial-gradient(circle at 82% 22%, rgba(216, 251, 255, 0.78), transparent 28%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.8), rgba(246, 248, 251, 0.82));
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.preview-wrap {
  position: relative;
  width: fit-content;
  max-width: min(92%, 760px);
  max-height: none;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 22px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 16px 38px rgba(25, 35, 54, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-wrap img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: none;
  object-fit: contain;
  cursor: pointer;
}

.preview-wrap img[src^="data:image/svg"] {
  width: min(100%, 670px);
  height: auto;
  object-fit: cover;
  display: block;
}

.pick-marker {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22px;
  height: 22px;
  border: 3px solid #fff;
  border-radius: 999px;
  background: rgba(17, 24, 39, 0.18);
  box-shadow: 0 0 0 2px #111827, 0 8px 18px rgba(17, 24, 39, 0.24);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.drop-hint {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  width: max-content;
  max-width: calc(100% - 48px);
  padding: 10px 14px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 999px;
  color: #485064;
  background: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 750;
  text-align: center;
  box-shadow: 0 8px 20px rgba(25, 35, 54, 0.08);
}

.panel {
  border-left: 1px solid var(--line);
  background: #fff;
  padding: 20px;
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 19px;
}

.selected-color {
  height: 116px;
  border-radius: 20px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  background: #2a8f70;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.field {
  margin-top: 14px;
}

.label {
  display: block;
  color: #798195;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.value-row {
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.value-row code {
  flex: 1;
  min-width: 0;
  padding: 10px 11px;
  border-radius: 12px;
  color: #111827;
  background: #f3f5f8;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.copy {
  min-width: 52px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #111827;
  background: #fff;
  cursor: pointer;
  font-weight: 800;
}

.palette {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.palette.is-focused,
.ai-card.is-focused {
  outline: 3px solid rgba(109, 93, 252, 0.32);
  outline-offset: 4px;
}

.swatch {
  aspect-ratio: 1;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  cursor: pointer;
}

.tool-actions {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: #fff;
  font-weight: 850;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.button.primary {
  border-color: #111827;
  color: #fff;
  background: #111827;
}

.upload-button {
  position: relative;
  overflow: hidden;
}

.upload-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.ai-card {
  margin-top: 14px;
  padding: 14px;
  border: 1px solid #e8eafd;
  border-radius: 18px;
  background: linear-gradient(135deg, #f7f6ff, #ffffff);
}

.ai-card h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

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

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 54px 24px;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.05;
  letter-spacing: 0;
}

.section-intro {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.feature-grid,
.page-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature,
.page-link {
  padding: 20px;
  border: 1px solid rgba(231, 235, 241, 0.92);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.86);
}

.feature h3,
.page-link h3 {
  margin: 0 0 8px;
}

.feature p,
.page-link p {
  margin: 0;
  color: var(--muted);
}

.page-link {
  text-decoration: none;
}

.page-link:hover {
  border-color: rgba(109, 93, 252, 0.28);
  box-shadow: 0 10px 30px rgba(25, 35, 54, 0.08);
}

.content-band {
  background: rgba(255, 255, 255, 0.72);
  border-top: 1px solid rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid rgba(231, 235, 241, 0.92);
}

.article {
  max-width: 880px;
  margin: 0 auto;
  padding: 46px 24px;
}

.article h1 {
  font-size: clamp(38px, 5vw, 62px);
}

.article h2 {
  margin-top: 34px;
}

.article p,
.article li {
  color: var(--muted);
  font-size: 17px;
}

.steps {
  padding-left: 22px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 15px 16px;
  margin-top: 10px;
  background: #fff;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.site-footer {
  border-top: 1px solid rgba(231, 235, 241, 0.92);
  padding: 28px 24px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.74);
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 960px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 2px;
  }

  .hero {
    padding-top: 110px;
  }

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

  .panel {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .feature-grid,
  .page-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .nav,
  .hero,
  .tool-section,
  .section,
  .article {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand {
    font-size: 18px;
  }

  .hero {
    padding-top: 64px;
  }

  h1 {
    font-size: clamp(36px, 12vw, 48px);
  }

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

  .drop-zone {
    min-height: 360px;
    padding: 18px;
  }

  .drop-hint {
    position: static;
    transform: none;
    margin-top: 14px;
    width: auto;
  }

  .feature-grid,
  .page-grid {
    grid-template-columns: 1fr;
  }
}