:root {
  --blue-900: #123d69;
  --blue-700: #196dad;
  --blue-500: #2789cc;
  --blue-100: #e7f3fb;
  --blue-050: #f5fafe;
  --magenta-700: #a91f65;
  --magenta-500: #cf3f87;
  --ink: #1b2b3a;
  --muted: #526477;
  --border: #d9e4ed;
  --surface: #ffffff;
  --warning-bg: #fff8e5;
  --warning-border: #e8c968;
  --shadow: 0 18px 55px rgba(24, 73, 111, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --max-width: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--blue-050);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.65;
}

body::before {
  background: linear-gradient(90deg, var(--blue-500), var(--magenta-500));
  content: "";
  display: block;
  height: 4px;
}

a {
  color: var(--blue-700);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--magenta-700);
}

img {
  display: block;
  height: auto;
  max-width: 100%;
}

button,
input {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--magenta-500);
  outline-offset: 3px;
}

.skip-link {
  background: var(--ink);
  color: white;
  left: 1rem;
  padding: 0.65rem 1rem;
  position: fixed;
  top: -5rem;
  z-index: 100;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max-width);
  min-height: 74px;
  padding: 0.65rem 1.25rem;
}

.brand {
  align-items: center;
  color: var(--blue-900);
  display: inline-flex;
  font-size: 1.05rem;
  font-weight: 800;
  gap: 0.7rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand:hover {
  color: var(--blue-900);
}

.brand img {
  border-radius: 12px;
  height: 44px;
  width: 44px;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: 0.2rem;
}

.site-nav a,
.nav-button {
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 650;
  padding: 0.55rem 0.7rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.nav-button:hover {
  background: var(--blue-100);
  color: var(--blue-900);
}

.menu-button {
  align-items: center;
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--ink);
  cursor: pointer;
  display: none;
  font-weight: 750;
  gap: 0.5rem;
  padding: 0.6rem 0.8rem;
}

.menu-lines,
.menu-lines::before,
.menu-lines::after {
  background: currentColor;
  border-radius: 3px;
  content: "";
  display: block;
  height: 2px;
  width: 18px;
}

.menu-lines {
  position: relative;
}

.menu-lines::before {
  position: absolute;
  top: -6px;
}

.menu-lines::after {
  position: absolute;
  top: 6px;
}

main {
  min-height: 65vh;
}

.home-hero {
  overflow: hidden;
  padding: 6.5rem 1.25rem 5.5rem;
  position: relative;
}

.home-hero::after {
  background: radial-gradient(circle, rgba(39, 137, 204, 0.18) 0 2px, transparent 3px);
  background-size: 21px 21px;
  content: "";
  height: 310px;
  opacity: 0.55;
  position: absolute;
  right: -60px;
  top: 30px;
  transform: rotate(-7deg);
  width: 390px;
  z-index: -1;
}

.hero-grid {
  align-items: center;
  display: grid;
  gap: clamp(2rem, 5vw, 5rem);
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  margin: 0 auto;
  max-width: var(--max-width);
}

.eyebrow {
  color: var(--magenta-700);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  margin: 0 0 0.8rem;
  text-transform: uppercase;
}

.home-hero h1,
.page-hero h1 {
  color: var(--blue-900);
  font-size: clamp(2.55rem, 6vw, 5.15rem);
  letter-spacing: -0.055em;
  line-height: 0.98;
  margin: 0;
}

.home-hero .lead {
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.3rem);
  margin: 1.5rem 0 0;
  max-width: 670px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  padding: 0.82rem 1.25rem;
  text-decoration: none;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button-primary {
  background: var(--blue-700);
  color: white;
}

.button-primary:hover {
  background: var(--blue-900);
  color: white;
}

.button-secondary {
  background: white;
  border-color: var(--border);
  color: var(--blue-900);
}

.hero-visual {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 2rem;
  position: relative;
}

.hero-icon {
  border-radius: 26px;
  box-shadow: 0 14px 35px rgba(39, 137, 204, 0.22);
  margin: 0 auto 1.7rem;
  width: 154px;
}

.scan-frame {
  border: 2px solid var(--blue-100);
  border-radius: 20px;
  padding: 1.25rem;
}

.scan-frame strong {
  color: var(--blue-900);
  display: block;
  font-size: 1.15rem;
  text-align: center;
}

.bite-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1rem;
}

.bite-tags span {
  background: var(--blue-100);
  border-radius: 999px;
  color: var(--blue-900);
  font-size: 0.8rem;
  font-weight: 720;
  padding: 0.35rem 0.65rem;
}

.section {
  padding: 5rem 1.25rem;
}

.section-white {
  background: white;
}

.section-inner {
  margin: 0 auto;
  max-width: var(--max-width);
}

.section-heading {
  margin-bottom: 2.2rem;
  max-width: 700px;
}

.section-heading h2 {
  color: var(--blue-900);
  font-size: clamp(2rem, 4vw, 3.15rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 0.9rem;
}

.section-heading p {
  color: var(--muted);
  font-size: 1.1rem;
  margin: 0;
}

.feature-grid,
.bite-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card,
.bite-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.45rem;
}

.feature-card h3,
.bite-card h3 {
  color: var(--blue-900);
  font-size: 1.12rem;
  margin: 0 0 0.5rem;
}

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

.bite-card {
  display: flex;
  flex-direction: column;
  min-height: 190px;
}

.bite-card a {
  font-weight: 800;
  margin-top: auto;
  padding-top: 1rem;
}

.notice {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-md);
  color: #584812;
  padding: 1.2rem 1.35rem;
}

.notice strong {
  display: block;
  margin-bottom: 0.25rem;
}

.page-hero {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 4.6rem 1.25rem 3.6rem;
}

.page-hero-inner {
  margin: 0 auto;
  max-width: 900px;
}

.page-hero h1 {
  font-size: clamp(2.35rem, 5vw, 4.3rem);
  line-height: 1.02;
}

.page-hero .lead {
  color: var(--muted);
  font-size: 1.17rem;
  margin: 1.2rem 0 0;
  max-width: 760px;
}

.article-shell {
  margin: 0 auto;
  max-width: 900px;
  padding: 3.2rem 1.25rem 5rem;
}

.article-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 42px rgba(24, 73, 111, 0.08);
  padding: clamp(1.35rem, 4vw, 3.4rem);
}

.article-card h2,
.article-card h3 {
  color: var(--blue-900);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.article-card h2 {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin: 2.5rem 0 0.8rem;
}

.article-card h2:first-child {
  margin-top: 0;
}

.article-card h3 {
  font-size: 1.25rem;
  margin-top: 1.8rem;
}

.article-card p,
.article-card ul,
.article-card ol {
  margin-bottom: 1.15rem;
  margin-top: 0.7rem;
}

.article-card li + li {
  margin-top: 0.35rem;
}

.table-scroll {
  margin: 1.5rem 0;
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  min-width: 620px;
  width: 100%;
}

th,
td {
  border: 1px solid var(--border);
  padding: 0.8rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--blue-100);
  color: var(--blue-900);
}

.article-cta {
  align-items: center;
  background: var(--blue-900);
  border-radius: var(--radius-md);
  color: white;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding: 1.35rem;
}

.article-cta p {
  margin: 0;
}

.article-cta .button {
  background: white;
  color: var(--blue-900);
  flex: 0 0 auto;
}

.identify-hero {
  background: linear-gradient(145deg, white 35%, var(--blue-100));
}

.recognizer-section {
  padding: 3.2rem 1.25rem 5rem;
}

.recognizer-shell {
  margin: 0 auto;
  max-width: var(--max-width);
}

.recognizer-workspace {
  align-items: start;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
}

.recognizer-card,
.result-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 14px 42px rgba(24, 73, 111, 0.08);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.recognizer-heading-row {
  align-items: start;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

.recognizer-card h2,
.result-card h2,
.recognizer-details h2 {
  color: var(--blue-900);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0;
}

.privacy-chip {
  background: #e8f7ed;
  border: 1px solid #b9dfc5;
  border-radius: 999px;
  color: #245f36;
  flex: 0 0 auto;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 0.4rem 0.7rem;
}

.drop-zone {
  align-items: center;
  background: var(--blue-050);
  border: 2px dashed #9dc5df;
  border-radius: var(--radius-md);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  margin-top: 1.4rem;
  padding: clamp(1.5rem, 4vw, 2.7rem) 1rem;
  text-align: center;
  transition: background 150ms ease, border-color 150ms ease;
}

.drop-zone:hover,
.drop-zone[data-dragging="true"] {
  background: var(--blue-100);
  border-color: var(--blue-700);
}

.drop-zone strong {
  color: var(--blue-900);
  font-size: 1.1rem;
}

.drop-zone-icon {
  align-items: center;
  background: white;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--blue-700);
  display: inline-flex;
  font-size: 1.7rem;
  font-weight: 500;
  height: 44px;
  justify-content: center;
  line-height: 1;
  margin-bottom: 0.7rem;
  width: 44px;
}

.image-preview {
  background: #eef5f9;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin: 1rem 0 0;
  overflow: hidden;
}

.image-preview img {
  aspect-ratio: 4 / 3;
  object-fit: contain;
  width: 100%;
}

.image-preview figcaption {
  background: white;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.83rem;
  overflow-wrap: anywhere;
  padding: 0.65rem 0.85rem;
}

.recognizer-actions {
  align-items: center;
  display: flex;
  gap: 1rem;
  margin-top: 1.2rem;
}

.text-button {
  background: transparent;
  border: 0;
  color: var(--blue-700);
  cursor: pointer;
  font-weight: 750;
  padding: 0.65rem 0;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.model-status {
  border-left: 3px solid var(--blue-500);
  color: var(--muted);
  margin: 1rem 0 0;
  padding-left: 0.75rem;
}

.model-status[data-state="success"] {
  border-color: #3a9654;
  color: #245f36;
}

.model-status[data-state="error"] {
  border-color: #c13d3d;
  color: #8c2525;
}

.result-card {
  min-height: 330px;
  position: sticky;
  top: 94px;
}

.result-card > div > p:not(.eyebrow) {
  color: var(--muted);
}

.result-name {
  color: var(--blue-900) !important;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 850;
  letter-spacing: -0.045em;
  line-height: 1;
  margin: 0.4rem 0 0;
}

.result-confidence {
  color: var(--magenta-700) !important;
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0.65rem 0 1rem;
}

.skin-check {
  border-radius: 12px;
  font-size: 0.92rem;
  padding: 0.75rem 0.85rem;
}

.skin-check[data-state="pass"] {
  background: #e8f7ed;
  color: #245f36 !important;
}

.skin-check[data-state="warning"] {
  background: var(--warning-bg);
  color: #584812 !important;
}

.result-card h3 {
  color: var(--blue-900);
  font-size: 1rem;
  margin: 1.4rem 0 0.65rem;
}

.score-list {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.score-heading {
  display: flex;
  font-size: 0.82rem;
  font-weight: 750;
  justify-content: space-between;
}

.score-list progress {
  accent-color: var(--blue-700);
  display: block;
  height: 0.65rem;
  width: 100%;
}

.result-guide {
  border-top: 1px solid var(--border);
  margin: 1.3rem 0 0 !important;
  padding-top: 1rem;
}

.recognizer-notice {
  margin-top: 1.25rem;
}

.recognizer-details {
  margin: 3rem auto 0;
  max-width: 820px;
}

.site-footer {
  background: #102d4b;
  color: #dbe8f3;
  padding: 3rem 1.25rem;
}

.footer-inner {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr auto;
  margin: 0 auto;
  max-width: var(--max-width);
}

.site-footer strong {
  color: white;
  display: block;
  font-size: 1.15rem;
  margin-bottom: 0.45rem;
}

.site-footer p {
  margin: 0;
  max-width: 600px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.2rem;
}

.site-footer a {
  color: white;
}

.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.86rem;
  margin: 2rem auto 0;
  max-width: var(--max-width);
  padding-top: 1.2rem;
}

.search-dialog {
  border: 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  max-width: 560px;
  padding: 0;
  width: calc(100% - 2rem);
}

.search-dialog::backdrop {
  background: rgba(10, 30, 50, 0.55);
}

.search-panel {
  padding: 1.35rem;
}

.search-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
}

.search-header h2 {
  color: var(--blue-900);
  margin: 0;
}

.search-close {
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.35rem;
}

.search-panel input {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-top: 1rem;
  padding: 0.8rem 0.9rem;
  width: 100%;
}

.search-results {
  list-style: none;
  margin: 1rem 0 0;
  max-height: 340px;
  overflow-y: auto;
  padding: 0;
}

.search-results a,
.search-empty {
  border-radius: 10px;
  display: block;
  padding: 0.7rem 0.8rem;
}

.search-results a:hover {
  background: var(--blue-100);
}

.error-page {
  align-items: center;
  display: flex;
  justify-content: center;
  min-height: 65vh;
  padding: 4rem 1.25rem;
  text-align: center;
}

.error-page h1 {
  color: var(--blue-900);
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.06em;
  line-height: 1;
  margin: 0;
}

@media (max-width: 1040px) {
  .menu-button {
    display: inline-flex;
  }

  .site-nav {
    align-items: stretch;
    background: white;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    left: 0;
    max-height: calc(100vh - 74px);
    overflow-y: auto;
    padding: 0.8rem 1.25rem 1.2rem;
    position: absolute;
    right: 0;
    top: 74px;
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .site-nav a,
  .nav-button {
    border-radius: 10px;
    padding: 0.7rem 0.8rem;
    text-align: left;
  }
}

@media (max-width: 780px) {
  .home-hero {
    padding-top: 4rem;
  }

  .hero-grid,
  .footer-inner,
  .recognizer-workspace {
    grid-template-columns: 1fr;
  }

  .result-card {
    position: static;
  }

  .hero-visual {
    margin: 0 auto;
    max-width: 480px;
    width: 100%;
  }

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

  .article-cta {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .header-inner {
    padding-inline: 0.85rem;
  }

  .brand span {
    font-size: 0.92rem;
  }

  .home-hero,
  .section,
  .page-hero,
  .article-shell,
  .recognizer-section {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .button-row,
  .button {
    width: 100%;
  }

  .recognizer-heading-row,
  .recognizer-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .privacy-chip {
    align-self: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}