:root {
  --color-bg: #ffffff;
  --color-bg-alt: #fff7ef;
  --color-text: #241d18;
  --color-text-muted: #6b6259;
  --color-primary: #e8590c;
  --color-primary-dark: #c2410c;
  --color-primary-darker: #9a3412;
  --color-primary-soft: #ffe8d6;
  --color-border: #efe5dc;
  --color-danger: #d64545;
  --color-success: #1a8a4a;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

#top,
#features,
#usage,
#contact {
  scroll-margin-top: 66px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.4;
}

a {
  color: var(--color-primary-dark);
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  padding-bottom: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  color: var(--color-text);
}

.logo img {
  display: block;
  border-radius: 7px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}

.site-nav a {
  color: var(--color-text);
}

.nav-cta {
  background: var(--color-primary-dark);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--color-primary-darker);
}

/* Hero */
.hero {
  background:
    radial-gradient(900px 480px at 85% -10%, var(--color-primary-soft), transparent 70%),
    linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
  padding-top: 72px;
  padding-bottom: 0;
}

.hero-eyebrow {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  margin: 0 0 20px;
}

.hero h1 {
  font-size: clamp(32px, 4.6vw, 52px);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.3;
  margin: 0 0 20px;
}

.hero h1 .accent {
  color: var(--color-primary-dark);
}

.hero-sub {
  color: var(--color-text-muted);
  font-size: 16px;
  max-width: 30em;
  margin: 0 0 28px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-block;
  line-height: 0;
  transition: opacity 0.2s ease;
}

.store-badge:hover {
  opacity: 0.8;
}

.store-badge img {
  width: 163px;
  height: 60px;
}

.hero-note {
  color: var(--color-text-muted);
  font-size: 12px;
  margin: 14px 0 48px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-self: end;
}

/* 端末フレームは画像側に焼き込み済み */
.phone {
  width: min(300px, 70vw);
}

.phone img {
  display: block;
  width: 100%;
}

/* Section 共通 */
.section-eyebrow {
  text-align: center;
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin: 0 0 8px;
}

.section-title {
  text-align: center;
  font-size: clamp(24px, 3vw, 30px);
  margin: 0 0 48px;
}

/* Features */
.features {
  padding: 88px 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 32px 28px 28px;
  text-align: center;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  box-shadow: 0 12px 32px rgba(120, 53, 15, 0.12);
  transform: translateY(-4px);
}

/* 端末フレームは画像側に焼き込み済み。太さの違う3機種でも高さを揃えて中央寄せする */
.feature-screen {
  height: 320px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.feature-card h3 {
  font-size: 18px;
  margin: 0 0 10px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 0;
  text-align: left;
}

/* Usage */
.usage {
  background: var(--color-bg-alt);
  padding: 88px 0;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.usage-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px 24px;
}

.usage-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.usage-icon svg {
  width: 26px;
  height: 26px;
}

.usage-card h3 {
  font-size: 17px;
  margin: 0 0 8px;
}

.usage-card p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 0;
}

.usage-notes {
  max-width: 720px;
  margin: 56px auto 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px 32px;
}

.usage-notes h3 {
  font-size: 15px;
  margin: 0 0 12px;
}

.usage-notes ul {
  margin: 0;
  padding-left: 1.4em;
}

.usage-notes li {
  color: var(--color-text-muted);
  font-size: 13px;
  margin-bottom: 6px;
}

/* FAQ (faq.html) */
.faq {
  padding: 80px 0 96px;
}

.faq-lead {
  text-align: center;
  color: var(--color-text-muted);
  margin: -24px auto 40px;
  max-width: 36em;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-q {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 15px;
}

.faq-question {
  flex: 1;
}

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 20px 68px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.faq-answer p {
  margin: 0 0 8px;
}

.faq-answer p:last-child,
.faq-answer ul:last-child {
  margin-bottom: 0;
}

.faq-answer ul {
  margin: 0;
  padding-left: 1.4em;
}

.faq-answer li {
  margin-bottom: 4px;
}

.faq-contact-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 40px 0 0;
}

.faq-contact-note a {
  text-decoration: underline;
}

/* CTAバンド */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-darker));
  color: #fff;
  text-align: center;
  padding: 72px 0;
}

.cta-band h2 {
  font-size: clamp(24px, 3vw, 30px);
  margin: 0 0 8px;
}

.cta-band p {
  opacity: 0.9;
  margin: 0 0 28px;
}

/* Contact */
.contact {
  padding: 88px 0 96px;
}

.contact-lead {
  text-align: center;
  color: var(--color-text-muted);
  margin: -24px auto 40px;
  max-width: 36em;
}

.contact-form {
  max-width: 560px;
  margin: 0 auto;
}

.form-row {
  margin-bottom: 20px;
}

.form-row label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.required {
  color: var(--color-danger);
  font-weight: 500;
  font-size: 12px;
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  background: var(--color-bg);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact-form input:focus-visible,
.contact-form textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-darker);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-outline {
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
  border-radius: 999px;
  padding: 14px 28px;
}

.btn-outline:hover {
  background: var(--color-primary-soft);
}

.contact-form .btn {
  width: 100%;
}

/* Honeypot: 画面外に配置してユーザーには見せない */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.cf-turnstile {
  margin-bottom: 20px;
}

.form-status {
  text-align: center;
  font-size: 14px;
  margin-top: 16px;
  min-height: 20px;
}

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

.form-status.error {
  color: var(--color-danger);
}

/* Privacy policy */
.policy {
  padding: 80px 0 96px;
}

.policy-inner {
  max-width: 720px;
}

.policy h1 {
  margin-bottom: 32px;
}

.policy h2 {
  font-size: 17px;
  margin: 32px 0 12px;
}

.policy p,
.policy li {
  color: var(--color-text-muted);
  font-size: 15px;
}

.policy ul {
  padding-left: 1.4em;
}

.policy-date {
  margin-top: 40px;
  font-size: 13px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
  text-align: center;
  font-size: 13px;
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

/* Responsive */
@media (max-width: 860px) {
  .feature-grid,
  .usage-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .hero-eyebrow {
    margin-top: 8px;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-note {
    margin-bottom: 8px;
  }
}

@media (max-width: 560px) {
  .header-inner {
    flex-wrap: wrap;
    row-gap: 10px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
  }

  .site-nav a:not(.nav-cta) {
    white-space: nowrap;
  }

  .nav-cta {
    padding: 8px 12px;
    white-space: nowrap;
  }

  .hero-inner {
    padding-top: 48px;
  }

  #top,
  #features,
  #usage,
  #contact {
    scroll-margin-top: 106px;
  }
}