:root {
  color-scheme: light;
  --ink: #1d1d1e;
  --muted: #69696c;
  --muted-strong: #4b4a4d;
  --line: #dfdeda;
  --paper: #f2f1ec;
  --panel: #fffdf9;
  --nando: #036273;
  --nando-strong: #397f8f;
  --nando-deep: #003d4a;
  --nando-soft: #e1ebee;
  --nando-medium: #9dc0c9;
  --nando-badge: #84b0bb;
  --shadow: 0 20px 48px rgb(29 29 30 / 8%);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --font-sans: "InterVariable", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-display: "IBM Plex Sans Variable", "IBM Plex Sans", "Inter", sans-serif;
  --font-label: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-japanese: "Noto Sans JP", "Yu Gothic", "YuGothic", "Hiragino Sans",
    "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  font-family: var(--font-sans);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
}

a {
  color: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.project-band {
  padding: 104px 0 56px;
  background: var(--nando-soft);
  border-bottom: 1px solid var(--line);
}

.page-body {
  padding: 56px 0 76px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--nando);
  font-size: 0.74rem;
  font-family: var(--font-label);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.benefit-tile,
.signup-card,
.evidence-section,
.sample-section {
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-panel {
  position: relative;
  overflow: visible;
  padding: clamp(36px, 5vw, 76px) 0;
}

.hero-panel::after {
  content: "狼煙";
  position: absolute;
  right: clamp(12px, 5vw, 46px);
  top: 50%;
  transform: translateY(-50%);
  color: var(--nando-badge);
  font-family: var(--font-japanese);
  font-size: clamp(6rem, 18vw, 12rem);
  font-weight: 900;
  line-height: 1;
  opacity: 0.22;
  pointer-events: none;
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(440px, 560px);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3vw, 44px);
  max-width: 700px;
}

.title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 0;
}

.eyebrow,
.section-label,
.project-badge {
  margin: 0 0 16px;
  color: var(--nando);
  font-family: var(--font-label);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.project-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--nando-badge);
  color: var(--ink);
}

.kanji {
  color: var(--nando);
  font-family: var(--font-japanese);
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
}

h1,
h2 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.05;
}

h1 {
  max-width: 760px;
  font-size: clamp(3rem, 7vw, 5.4rem);
}

.confirmation-panel h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h2 {
  font-size: clamp(1.8rem, 3.8vw, 3rem);
}

h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.25;
}

p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.lede {
  max-width: 680px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.24rem, 2.4vw, 1.72rem);
  line-height: 1.42;
}

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

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 0;
  padding-top: clamp(20px, 2vw, 30px);
  border-top: 1px solid var(--line);
}

.project-tags span {
  border-radius: 999px;
  background: color-mix(in srgb, var(--nando) 10%, transparent);
  color: var(--nando);
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  text-transform: uppercase;
}

.primary-link,
.secondary-link,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: var(--radius-md);
  padding: 0 20px;
  font-weight: 800;
  text-decoration: none;
}

.primary-link,
button {
  border: 1px solid var(--nando);
  background: var(--nando);
  color: #ffffff;
}

.primary-link:hover,
button:hover:not(:disabled) {
  background: var(--nando-deep);
  border-color: var(--nando-deep);
}

.secondary-link {
  border: 1px solid #e5e5e5;
  background: #f5f5f5;
  color: var(--muted-strong);
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.benefit-tile,
.signup-card,
.evidence-section,
.sample-section {
  border-radius: var(--radius-lg);
  padding: clamp(22px, 4vw, 38px);
}

.tile-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  border-radius: var(--radius-md);
  background: var(--nando-soft);
  color: var(--nando);
  font-size: 0.8rem;
  font-weight: 900;
}

.signup-card {
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow);
  padding: clamp(28px, 3.4vw, 46px);
}

.signup-card h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  line-height: 1.2;
}

.signup-card p {
  margin-bottom: 18px;
}

.signup-card .section-label {
  margin-bottom: 20px;
}

.signup-form {
  display: grid;
  gap: clamp(18px, 2vw, 24px);
  margin-top: clamp(24px, 2.6vw, 32px);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

/* Name and email span the full card width so long email addresses are not truncated. */
.form-row--stacked {
  grid-template-columns: 1fr;
}

label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 750;
}

input,
select {
  width: 100%;
  min-height: 52px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--ink);
  font-family: inherit;
  font-size: 1.05rem;
  padding: 0 16px;
}

::placeholder {
  color: var(--muted);
  opacity: 1;
}

input:focus,
select:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgb(3 98 115 / 24%);
  outline-offset: 3px;
}

button {
  width: 100%;
  cursor: pointer;
  font-family: inherit;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.signup-form button {
  min-height: 58px;
  margin-top: 4px;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.turnstile-field {
  min-height: 65px;
  margin-top: 2px;
  overflow: visible;
}

.turnstile-field:empty {
  display: none;
}

.privacy-note {
  margin: 0;
  font-size: 0.88rem;
}

.form-message {
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 0.94rem;
  line-height: 1.55;
}

.form-message.success {
  border: 1px solid var(--nando-medium);
  background: var(--nando-soft);
  color: var(--nando-deep);
}

.form-message.error {
  border: 1px solid #fecaca;
  background: #fef2f2;
  color: #991b1b;
}

.sample-section {
  margin-top: 24px;
}

.sample-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.65fr) minmax(420px, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.sample-copy {
  max-width: 460px;
}

.evidence-section {
  margin-top: 24px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.evidence-grid article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #f8f7f2;
}

.evidence-grid p {
  margin: 10px 0 0;
  font-size: 0.94rem;
}

.expectation-list {
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
  padding-left: 22px;
  color: var(--muted);
}

.expectation-list li {
  line-height: 1.6;
}

.brief-card {
  border-radius: var(--radius-lg);
  background: var(--nando-soft);
  padding: clamp(20px, 4vw, 34px);
}

.brief-card h3 {
  margin-bottom: 20px;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

.brief-card p {
  margin: 0;
  color: var(--ink);
}

.brief-card p + p {
  margin-top: 18px;
}

.brief-card strong {
  color: var(--nando-deep);
}

.source-link {
  display: inline-flex;
  margin-top: 20px;
  color: var(--ink);
  font-weight: 400;
  text-decoration: none;
}

.source-link:hover {
  text-decoration: underline;
}

@media (max-width: 860px) {
  .hero-layout,
  .benefit-grid,
  .evidence-grid,
  .sample-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .page-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 20px;
  }

  .hero-copy,
  .benefit-tile,
  .signup-card,
  .evidence-section,
  .sample-section {
    border-radius: var(--radius-lg);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: clamp(2.8rem, 15vw, 4rem);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ink: #e3e3e4;
    --muted: #a8b1b8;
    --line: #27444b;
    --paper: #111719;
    --panel: #172023;
    --nando-soft: #162e34;
    --shadow: 0 24px 70px rgb(0 0 0 / 32%);
  }

  body {
    background:
      radial-gradient(circle at top left, rgb(3 98 115 / 34%), transparent 32rem),
      linear-gradient(135deg, #101719 0%, #142126 45%, #101719 100%);
  }

  .benefit-tile,
  .signup-card,
  .evidence-section,
  .sample-section {
    background: rgb(23 32 35 / 88%);
  }

  .secondary-link,
  input,
  select {
    background: #101719;
    color: var(--ink);
  }

  .project-badge,
  .tile-icon,
  .evidence-grid article {
    background: #162e34;
    color: var(--ink);
  }

  .brief-card p {
    color: #d8e3e6;
  }

  .brief-card strong {
    color: #9dc0c9;
  }
}