:root {
  --bg: #0f1729;
  --surface: #1a2540;
  --primary: #e8b33c;
  --text: #ffffff;
  --secondary: #b8c4dc;
  --dim: #7a88a6;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 2rem;
  --font-sans: "Plus Jakarta Sans", "Noto Sans JP", ui-sans-serif,
    system-ui, sans-serif;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

/* 端末モックはすべて 960x2075 の背景透過webpに揃えてある。
   width だけを指定し、高さは常に比率から導く。 */
.fan img,
.figure img {
  aspect-ratio: 960 / 2075;
  height: auto;
  object-fit: contain;
}

a {
  color: inherit;
}

.wrap {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.wrap-narrow {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.wrap-wide {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.divider {
  width: 3rem;
  height: 1px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1);
}

section {
  padding: 3rem 0;
}

h2 {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin: 0 0 1.5rem;
  line-height: 1.6;
}

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 23, 41, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.header-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary);
  text-decoration: none;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: #241a05;
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.15s;
}

.btn:hover {
  opacity: 0.9;
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.8125rem;
}

/* ── Hero ── */
.hero {
  padding-top: 4rem;
  padding-bottom: 3rem;
}

.hero-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 3rem;
}

.gate {
  background: var(--surface);
  border: 1px solid rgba(232, 179, 60, 0.25);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  margin: 0 auto 1.5rem;
  max-width: 26rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--secondary);
  text-align: left;
}

.gate strong {
  color: var(--primary);
}

.hero-logo {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--primary);
  margin: 0 0 0.75rem;
  line-height: 1.1;
}

.hero h1 {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

.hero-lead {
  font-size: 0.9375rem;
  color: var(--secondary);
  margin: 0 0 2rem;
}

.hero-lead strong {
  color: var(--text);
}

/* ── Fanned phones ── */
.fan {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0;
}

.fan img {
  width: 6.75rem;
}

.fan img:nth-child(1) {
  transform: rotate(-4deg);
  margin-right: -1.25rem;
  z-index: 1;
}

.fan img:nth-child(2) {
  width: 8rem;
  z-index: 2;
}

.fan img:nth-child(3) {
  transform: rotate(4deg);
  margin-left: -1.25rem;
  z-index: 1;
}

/* ── Form ── */
.signup {
  width: 100%;
  max-width: 26rem;
  margin-inline: auto;
}

.signup-row {
  display: flex;
  gap: 0.5rem;
}

.signup input[type="email"] {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
}

.signup input[type="email"]::placeholder {
  color: var(--dim);
}

.signup input[type="email"]:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

.signup-note {
  margin: 0.75rem 0 0;
  font-size: 0.75rem;
  color: var(--dim);
  line-height: 1.6;
}

.signup-note a {
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  margin-left: 0.4em;
}

.signup-note a:hover {
  color: var(--text);
}

.honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
}

.form-status {
  margin: 0.75rem 0 0;
  font-size: 0.875rem;
  font-weight: 700;
  min-height: 1.4em;
}

.form-status.ok {
  color: var(--primary);
}

.form-status.ng {
  color: #ff8a8a;
}

/* ── Pain points ── */
.pains {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  font-size: 0.9375rem;
  color: var(--secondary);
}

.pains li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.pains li::before {
  content: "—";
  color: var(--primary);
  flex-shrink: 0;
  font-weight: 700;
}

/* ── Steps ── */
.steps {
  display: grid;
  gap: 2rem;
  align-items: start;
  text-align: left;
}

.step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.step h3 span {
  color: var(--primary);
}

.step p {
  font-size: 0.875rem;
  color: var(--secondary);
  margin: 0 0 1.25rem;
}

.figure {
  display: flex;
  justify-content: center;
}

.figure img {
  width: 100%;
  max-width: 15rem;
}

.note {
  margin: 2rem 0 0;
  font-size: 0.875rem;
  color: var(--secondary);
  text-align: center;
}

.note strong {
  color: var(--text);
}

/* ── Split section ── */
.split {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  text-align: center;
}

.split-body {
  font-size: 0.9375rem;
  color: var(--secondary);
  margin: 0;
}

.split-body strong {
  color: var(--text);
}

/* ── FAQ ── */
.faq dl {
  margin: 0;
  display: grid;
  gap: 1.5rem;
}

.faq dt {
  font-weight: 700;
  font-size: 0.9375rem;
}

.faq dt::before {
  content: "Q. ";
  color: var(--primary);
}

.faq dd {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  color: var(--secondary);
}

/* ── Final CTA ── */
.final {
  text-align: center;
}

.final .signup {
  margin: 1.5rem auto 0;
}

/* ── Footer ── */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1.75rem 0 2.5rem;
  font-size: 0.75rem;
  color: var(--dim);
  text-align: right;
}

footer a {
  color: var(--secondary);
  text-decoration: none;
}

footer a:hover {
  color: var(--text);
}

footer p {
  margin: 0.5rem 0 0;
}

/* ── Legal pages ── */
.legal {
  padding: 3rem 0 4rem;
}

.legal h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 1.5rem;
}

.legal-lead {
  font-size: 0.875rem;
  color: var(--secondary);
  margin: 0 0 2.5rem;
}

.legal section {
  padding: 0;
  margin-bottom: 2.5rem;
}

.legal h2 {
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.legal h3 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--primary);
  margin: 1.5rem 0 0.5rem;
}

.legal p {
  font-size: 0.875rem;
  color: var(--secondary);
  margin: 0 0 0.75rem;
}

.legal ul {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
  font-size: 0.875rem;
  color: var(--secondary);
}

.legal li {
  margin-bottom: 0.35rem;
}

.legal-contact {
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 1rem;
  line-height: 2;
}

.legal-date {
  margin-top: 3rem;
  font-size: 0.75rem;
  color: var(--dim);
}

/* ── Wide layout ── */
@media (min-width: 760px) {
  section {
    padding: 4rem 0;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero-grid {
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: 3.5rem;
  }

  .hero-copy {
    flex: 1;
  }

  .hero-copy .gate,
  .hero-copy .signup {
    margin-inline: 0;
  }

  .hero-logo {
    font-size: 3.5rem;
  }

  .hero h1 {
    font-size: 1.625rem;
  }

  .fan {
    flex-shrink: 0;
  }

  .fan img {
    width: 8.5rem;
  }

  .fan img:nth-child(2) {
    width: 10rem;
  }

  .pains {
    grid-template-columns: 1fr 1fr;
    column-gap: 4rem;
    row-gap: 1.5rem;
    font-size: 1rem;
  }

  .faq dl {
    row-gap: 2rem;
  }

  .split {
    flex-direction: row;
    text-align: left;
    gap: 3.5rem;
  }

  .split-copy {
    flex: 1;
  }

  .split .figure {
    flex-shrink: 0;
  }
}