:root {
  color-scheme: light;
  --ink: #172026;
  --muted: #5d6871;
  --line: #dfe5e8;
  --paper: #f8f6f0;
  --white: #ffffff;
  --mint: #8bcfc4;
  --teal: #0b6f74;
  --coral: #e66c53;
  --saffron: #d89b2b;
  --charcoal: #101820;
  --shadow: 0 24px 60px rgba(16, 24, 32, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 128px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui,
    -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.75;
}

img {
  max-width: 100%;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 52px);
  color: var(--white);
  background: rgba(16, 24, 32, 0.82);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: clamp(190px, 22vw, 260px);
  height: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 32px);
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.9rem;
  font-weight: 700;
}

.site-nav a {
  padding: 6px 0;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--charcoal);
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("./assets/hero-ai-creators.png");
  background-position: center;
  background-size: cover;
  transform: scale(1.02);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(12, 18, 24, 0.88) 0%, rgba(12, 18, 24, 0.64) 38%, rgba(12, 18, 24, 0.18) 76%),
    linear-gradient(0deg, rgba(12, 18, 24, 0.82) 0%, rgba(12, 18, 24, 0.16) 48%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: 148px 0 84px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(2.55rem, 5.15vw, 4.95rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.hero h1 span {
  display: block;
}

.hero-lead {
  max-width: 730px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1rem, 2vw, 1.22rem);
  line-height: 1.95;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 800;
  line-height: 1.2;
}

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

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.48);
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.band {
  background: var(--white);
}

.section,
.band {
  padding: clamp(72px, 9vw, 118px) 0;
  scroll-margin-top: 128px;
}

.intro-grid,
.feature-grid,
.join-grid,
.split-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.9fr) minmax(0, 1.35fr);
  gap: clamp(32px, 7vw, 86px);
  align-items: start;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.55rem);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.35;
}

p {
  margin: 0;
}

.intro-grid > p,
.feature-copy > p,
.join-copy p,
.vision p {
  color: var(--muted);
  font-size: 1.08rem;
}

.section-heading {
  margin-bottom: 34px;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.business-card {
  min-height: 100%;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 1px 0 rgba(16, 24, 32, 0.04);
}

.business-card.featured {
  border-color: rgba(11, 111, 116, 0.32);
  box-shadow: var(--shadow);
}

.number {
  margin-bottom: 18px;
  color: var(--teal);
  font-size: 0.9rem;
  font-weight: 900;
}

.card-lead {
  margin: 16px 0 14px;
  color: var(--charcoal);
  font-size: 1.05rem;
  font-weight: 800;
}

.business-card p:not(.number):not(.card-lead) {
  color: var(--muted);
}

.flow-list,
.project-list,
.tag-list,
.role-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.flow-list {
  counter-reset: step;
  display: grid;
  gap: 12px;
}

.flow-list li {
  counter-increment: step;
  position: relative;
  padding-left: 36px;
  color: var(--muted);
}

.flow-list li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.15em;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(139, 207, 196, 0.35);
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 900;
}

.tag-list,
.role-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list li,
.role-list li,
.pillar-row span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fbfcfb;
  padding: 8px 13px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.3;
}

.project-list {
  display: grid;
  gap: 10px;
}

.project-list li {
  padding-left: 18px;
  border-left: 3px solid var(--saffron);
  color: var(--muted);
}

.split-section {
  background: #edf4f1;
}

.feature-copy {
  display: grid;
  gap: 26px;
}

.pillar-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.join-grid {
  align-items: center;
}

.join-copy {
  display: grid;
  gap: 20px;
}

.role-list {
  align-content: start;
  padding: clamp(22px, 4vw, 34px);
  border-radius: 8px;
  background: var(--charcoal);
}

.role-list li {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}

.achievements {
  background: var(--white);
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.achievement-grid p {
  min-height: 120px;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  background: var(--white);
  font-weight: 800;
  line-height: 1.55;
}

.vision {
  padding: clamp(90px, 12vw, 150px) 0;
  scroll-margin-top: 128px;
  background:
    linear-gradient(135deg, rgba(11, 111, 116, 0.94), rgba(16, 24, 32, 0.98)),
    var(--charcoal);
  color: var(--white);
}

.vision-inner {
  max-width: 920px;
}

.vision h2 {
  max-width: 760px;
}

.vision p {
  max-width: 780px;
  margin-top: 26px;
  color: rgba(255, 255, 255, 0.82);
}

.company-section {
  background: var(--paper);
}

.company-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(0, 1fr);
  gap: clamp(24px, 6vw, 72px);
  align-items: start;
}

.company-list {
  margin: 0;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.company-list div {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 18px;
  padding: 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.company-list dt {
  color: var(--teal);
  font-weight: 900;
}

.company-list dd {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.notice-box,
.contact-form {
  padding: clamp(24px, 4vw, 34px);
  border-radius: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 12px 34px rgba(16, 24, 32, 0.08);
}

.notice-box h3 {
  margin-bottom: 14px;
  font-size: 1.3rem;
}

.notice-box p,
.contact-grid > div > p,
.policy-body p {
  color: var(--muted);
}

.contact-section {
  background: #edf4f1;
}

.contact-grid > div:first-child {
  display: grid;
  gap: 20px;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 900;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  line-height: 1.5;
}

.contact-form input,
.contact-form select {
  min-height: 48px;
  padding: 10px 12px;
}

.contact-form textarea {
  min-height: 150px;
  resize: vertical;
  padding: 12px;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(139, 207, 196, 0.38);
  border-color: var(--teal);
}

.privacy-check {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.privacy-check input {
  width: 18px;
  min-height: 18px;
  margin-top: 0.25em;
}

.privacy-check a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-button {
  width: fit-content;
  border: 0;
  cursor: pointer;
}

.hidden-field {
  display: none;
}

.privacy-section {
  background: var(--white);
}

.privacy-inner {
  max-width: 920px;
}

.policy-body {
  display: grid;
  gap: 16px;
}

.policy-body h3 {
  margin-top: 12px;
  font-size: 1.12rem;
}

.policy-note {
  padding-top: 10px;
  font-weight: 800;
}

.thanks-page {
  background:
    linear-gradient(135deg, rgba(11, 111, 116, 0.12), rgba(230, 108, 83, 0.12)),
    var(--paper);
}

.thanks-main {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.thanks-card {
  width: min(680px, 100%);
  padding: clamp(32px, 7vw, 56px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.thanks-card h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.2;
}

.thanks-card p:not(.section-kicker) {
  margin: 18px 0 28px;
  color: var(--muted);
  font-size: 1.08rem;
}

.site-footer {
  padding: 28px 0;
  background: #0b1014;
  color: rgba(255, 255, 255, 0.72);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 0.9rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.82);
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 14px 20px;
  }

  .site-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .hero {
    min-height: 88svh;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(12, 18, 24, 0.9), rgba(12, 18, 24, 0.48)),
      linear-gradient(0deg, rgba(12, 18, 24, 0.9) 0%, rgba(12, 18, 24, 0.18) 58%);
  }

  .hero-inner {
    padding-top: 170px;
  }

  .intro-grid,
  .feature-grid,
  .join-grid,
  .split-grid,
  .business-grid,
  .company-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .business-card.featured {
    box-shadow: 0 14px 34px rgba(16, 24, 32, 0.12);
  }

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

@media (max-width: 560px) {
  .container,
  .hero-inner {
    width: min(100% - 28px, 1120px);
  }

  .brand {
    font-size: 0.92rem;
  }

  .site-nav {
    gap: 18px;
    font-size: 0.84rem;
  }

  .hero {
    min-height: 94svh;
  }

  .hero-media {
    background-position: 60% center;
  }

  .hero-inner {
    padding-bottom: 54px;
  }

  .hero h1 {
    font-size: 2.35rem;
  }

  .hero h1 span {
    display: inline;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .section,
  .band {
    padding: 64px 0;
  }

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

  .achievement-grid p {
    min-height: 92px;
  }

  .company-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}