/* ART LOG visual foundation
 * Source: docs/badge-generation/common-prompt.md and selected badges
 * Palette values are UI interpretations of the material descriptions.
 * Mobile reference viewport: 375px / horizontal gutter: 14px
 */

:root {
  --al-indigo: #102d56;
  --al-ink: #302e2a;
  --al-ivory: #faf7f0;
  --al-white: #ffffff;
  --al-mist: #edf0e8;
  --al-gold: #987338;
  --al-coral: #ad593f;
  --al-sage: #687c65;
  --al-stone: #eee8dd;
  --al-green: #304f43;
  --al-ultramarine: #213e76;
  --al-platinum: #d5d4ce;
  --al-line: #dcd4c5;
  --al-muted: #6b655c;
  --al-stage-1: var(--al-coral);
  --al-stage-2: var(--al-sage);
  --al-stage-3: var(--al-green);
  --al-stage-4: var(--al-indigo);
  --al-stage-5: var(--al-ultramarine);
  --al-font-serif: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  --al-font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --al-gutter: 14px;
  --al-radius-image: 4px;
  --al-radius-control: 14px;
  --al-radius-card: 16px;
  --al-radius-hero: 24px;
  --al-shadow-card: 0 4px 18px rgba(65, 49, 27, .05);
}

body.landing-page {
  --sl-primary: var(--al-green);
  min-width: 320px;
  color: var(--al-ink);
  background: var(--al-stone);
  font-family: var(--al-font-sans);
}

body.landing-page .main.guest-v2 {
  width: min(100%, 430px);
  margin: 0 auto;
  padding: 0 0 64px;
  overflow: hidden;
  background: var(--al-ivory);
}

body.landing-page .guest-v2-hero {
  position: relative;
  min-height: 0;
  margin: 0;
  padding: var(--al-gutter);
  overflow: hidden;
  color: var(--al-indigo);
  border-radius: 0;
  box-shadow: none;
  background: var(--al-ivory);
}

body.landing-page .guest-v2-hero::before,
body.landing-page .guest-v2-hero::after {
  position: absolute;
  content: none;
  pointer-events: none;
}

body.landing-page .guest-v2-hero::before {
  inset: 94px 28px auto auto;
  width: 112px;
  height: 138px;
  border: 1px solid var(--al-gold);
  border-radius: 2px;
  background: linear-gradient(145deg, var(--al-stone), #fffdf8);
  box-shadow: inset 0 0 0 7px var(--al-ivory), inset 0 0 0 8px var(--al-line), 0 8px 22px rgba(65, 49, 27, .06);
}

body.landing-page .guest-v2-hero::after {
  right: 28px;
  top: 245px;
  width: 36px;
  height: 8px;
  border-left: 2px solid var(--al-gold);
  background: var(--al-white);
}

body.landing-page .guest-v2-hero-body {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 0;
  gap: 0;
  padding: 8px 0 28px;
  flex-direction: column;
}

body.landing-page .artlog-hero-image {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 20px;
  border-radius: var(--al-radius-image);
}

body.landing-page .guest-v2-logo {
  width: min(178px, 48vw);
  height: auto;
  filter: brightness(0) saturate(100%) invert(15%) sepia(29%) saturate(2084%) hue-rotate(177deg) brightness(88%);
}

body.landing-page .guest-v2-lang-switch {
  top: 8px;
  right: 0;
  border-color: var(--al-line);
  background: rgba(255, 255, 255, .72);
  box-shadow: none;
  backdrop-filter: blur(12px);
}

body.landing-page .guest-v2-lang-switch a {
  min-height: 36px;
  color: var(--al-muted);
}

body.landing-page .guest-v2-lang-switch a.is-active {
  color: var(--al-white);
  background: var(--al-indigo);
}

body.landing-page .guest-v2-hero-art {
  display: none;
}

body.landing-page .guest-v2-hero-copy {
  width: 100%;
  margin: 24px 0 0;
  padding: 0;
  text-align: center;
}

body.landing-page .guest-v2-hero-body h1 {
  margin: 0;
  color: var(--al-indigo);
  font-family: var(--al-font-serif);
  font-size: clamp(1.65rem, 7.6vw, 2rem);
  font-weight: 500;
  line-height: 1.38;
  letter-spacing: .02em;
  white-space: normal;
}

body.landing-page .artlog-wordmark {
  display: block;
  width: min(210px, 100%);
  align-self: flex-start;
}

body.landing-page .artlog-service-logo {
  display: block;
  width: 100%;
  height: auto;
}

body.landing-page .artlog-preparation {
  padding: 12px;
  border-left: 2px solid var(--al-gold);
  background: var(--al-ivory);
  color: var(--al-muted);
  font-size: .85rem;
  line-height: 1.8;
}

body.landing-page .artlog-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: .8rem;
  color: var(--al-muted);
}

body.landing-page .artlog-footer small { flex-basis: 100%; }

body.landing-page .guest-v2-hero-body h1 span {
  color: inherit;
  display: block;
}

body.landing-page .guest-v2-hero-body p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--al-muted);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.85;
}

body.landing-page .guest-v2-hero-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 28px;
}

body.landing-page .guest-v2-actions .btn {
  padding-inline: 8px;
  font-size: .875rem;
  white-space: nowrap;
}

body.landing-page .artlog-feature-icon {
  display: block;
  margin-bottom: 12px;
}

body.landing-page .guest-v2-feature-grid article {
  padding: 16px;
}

body.landing-page .guest-v2-feature-grid p {
  font-size: 1rem;
}

body.landing-page .guest-v2-panel > p {
  font-size: 1rem;
  line-height: 1.8;
}

body.landing-page .artlog-guide-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  padding: 16px 0;
  border-top: 1px solid var(--al-line);
  color: var(--al-indigo);
}

body.landing-page .artlog-guide-link strong,
body.landing-page .artlog-guide-link small {
  display: block;
}

body.landing-page .artlog-guide-link small {
  margin-top: 4px;
  color: var(--al-muted);
  font-size: .875rem;
}

body.landing-page .artlog-footer {
  gap: 8px 20px;
  padding-top: 24px;
  border-top: 1px solid var(--al-line);
}

body.landing-page .artlog-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

body.landing-page .btn {
  display: inline-flex;
  min-height: 48px;
  padding: 0 16px;
  align-items: center;
  justify-content: center;
  border-radius: var(--al-radius-control);
  font-family: var(--al-font-sans);
  font-size: .9rem;
  font-weight: 700;
  line-height: 1.4;
  box-shadow: none;
}

body.landing-page .btn.primary {
  border: 1px solid var(--al-indigo);
  color: var(--al-white);
  background: var(--al-indigo);
}

body.landing-page .btn.ghost {
  border: 1px solid var(--al-line);
  color: var(--al-indigo);
  background: rgba(255, 255, 255, .9);
}

body.landing-page .guest-v2-member-preview,
body.landing-page .guest-v2-stack {
  margin-inline: var(--al-gutter);
}

body.landing-page .guest-v2-member-preview {
  margin-top: 0;
}

body.landing-page .guest-v2-stack {
  padding: 0;
  margin-top: 24px;
  gap: 24px;
}

body.landing-page .guest-v2-panel,
body.landing-page .guest-v2-cta {
  border: 1px solid var(--al-line);
  border-radius: var(--al-radius-card);
  color: var(--al-ink);
  background: rgba(255, 255, 255, .94);
  box-shadow: var(--al-shadow-card);
}

body.landing-page .guest-v2-panel {
  padding: 18px 16px;
}

body.landing-page .section-head h2,
body.landing-page .guest-v2-cta h2 {
  color: var(--al-indigo);
  font-family: var(--al-font-serif);
  font-weight: 600;
  letter-spacing: .02em;
}

body.landing-page .section-head h2 {
  font-size: 1.35rem;
  line-height: 1.45;
}

body.landing-page .guest-v2-panel .section-head h2 {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.6;
}

body.landing-page .guest-v2-feature-grid p {
  font-weight: 400;
  line-height: 1.8;
}

body.landing-page a:focus-visible {
  outline: 3px solid var(--al-indigo);
  outline-offset: 3px;
}

body.landing-page .guest-v2-badge-strip {
  background: var(--al-stone);
  border: 1px solid var(--al-line);
  border-radius: var(--al-radius-card);
}

body.landing-page .profile-v3-see-all {
  color: var(--al-indigo);
  text-decoration-color: var(--al-gold);
  text-underline-offset: 4px;
}

body.landing-page .guest-v2-feature-grid {
  gap: 10px;
}

body.landing-page .guest-v2-feature-grid article,
body.landing-page .guest-v2-news-list a,
body.landing-page .guest-v2-region-grid a,
body.landing-page .guest-v2-open-grid a {
  border-color: var(--al-line);
  border-radius: 12px;
  color: var(--al-ink);
  background: var(--al-ivory);
  box-shadow: none;
}

body.landing-page .guest-v2-feature-grid strong,
body.landing-page .guest-v2-news-list strong,
body.landing-page .guest-v2-region-grid strong,
body.landing-page .guest-v2-open-grid strong {
  color: var(--al-indigo);
}

body.landing-page .guest-v2-feature-grid p,
body.landing-page .guest-v2-news-list small,
body.landing-page .guest-v2-region-grid small,
body.landing-page .guest-v2-open-grid small,
body.landing-page .guest-v2-social-card > p,
body.landing-page .guest-v2-cta > p {
  color: var(--al-muted);
}

body.landing-page .guest-v2-pref-pills a {
  min-height: 44px;
  border: 1px solid var(--al-line);
  color: var(--al-indigo);
  background: var(--al-mist);
}

body.landing-page .guest-v2-cta {
  position: relative;
  padding: 36px 20px;
  overflow: hidden;
  background:
    radial-gradient(circle at 95% 5%, rgba(152, 115, 56, .10), transparent 36%),
    linear-gradient(145deg, var(--al-stone), var(--al-ivory));
}

body.landing-page .guest-v2-cta .eyebrow {
  color: var(--al-gold);
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: .18em;
}

body.landing-page .guest-v2-social-link {
  min-height: 48px;
  border: 1px solid var(--al-line);
  border-radius: var(--al-radius-control);
  color: var(--al-indigo);
  background: var(--al-white);
  box-shadow: none;
}

@media (max-width: 359px) {
  body.landing-page .guest-v2-logo {
    width: 140px;
  }

  body.landing-page .guest-v2-lang-switch a {
    padding-inline: 7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.landing-page *,
  body.landing-page *::before,
  body.landing-page *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}