:root {
  --green: #889967;
  --green-dark: #66734d;
  --green-soft: #cce69a;
  --bg: #b9d08b;
  --text: #333333;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
}

.site-header,
.site-footer {
  background: var(--green);
  color: var(--white);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.header-inner,
.footer-inner,
.section-inner {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 20px;
  font-size: 14px;
}

.nav a {
  text-decoration: none;
}

.info-bar {
  display: block;
  background: var(--green-dark);
  color: var(--white);
  padding: 10px 16px;
  text-align: center;
  text-decoration: none;
  font-size: 14px;
}

.hero,
.section {
  padding: 56px 0;
}

.section.alt {
  background: var(--green-soft);
}

.hero-grid,
.feature-grid,
.download-grid {
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  align-items: center;
  gap: 48px;
}

.feature-grid.reverse {
  grid-template-columns: 0.78fr 1fr;
}

.app-icon {
  width: 170px;
  max-width: 45vw;
  display: block;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: clamp(20px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.45;
}

h1,
h2,
h3 {
  margin: 0 0 18px;
  line-height: 1.35;
}

h1 {
  font-size: clamp(44px, 7vw, 78px);
}

h2 {
  font-size: clamp(26px, 4vw, 42px);
}

h3 {
  font-size: 22px;
}

p {
  margin: 0 0 1em;
}

.app-store {
  width: 200px;
  max-width: 100%;
  display: block;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  background: var(--green);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.phone {
  display: block;
  width: min(360px, 86vw);
  margin: 0 auto;
  filter: drop-shadow(0 16px 22px rgba(0, 0, 0, 0.16));
}

.notice-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  border-top: 1px solid rgba(0, 0, 0, 0.12);
}

.notice-list li {
  padding: 16px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.12);
}

.notice-list time {
  display: block;
  color: #5b6745;
  font-size: 14px;
}

.notice-list a {
  font-weight: 700;
  text-decoration: none;
}

.page {
  background: var(--white);
  width: min(900px, calc(100% - 32px));
  margin: 40px auto 64px;
  padding: clamp(24px, 5vw, 56px);
  border-radius: 8px;
}

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

.article-date {
  color: #666666;
  font-size: 14px;
}

.caution {
  margin: 24px 0;
  padding: 20px 24px;
  border: 2px solid #f0d54d;
  border-radius: 8px;
  background: #fffbe6;
}

.step-list {
  display: grid;
  gap: 28px;
  margin: 32px 0;
}

.step {
  display: grid;
  grid-template-columns: 1fr minmax(180px, 280px);
  gap: 24px;
  align-items: start;
  padding: 24px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.12);
}

.step-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 54px;
  height: 30px;
  border-radius: 999px;
  background: var(--green);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
}

.article-image {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 18px auto;
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.14);
}

.article-image.phone-shot {
  width: min(280px, 80vw);
}

.article-image.wide-shot {
  width: 100%;
}

.marker {
  background: linear-gradient(transparent 64%, #ffddbc 0%);
}

.v2-page {
  background: var(--bg);
}

.v2-main {
  width: min(980px, calc(100% - 32px));
  margin: 40px auto 64px;
}

.v2-visual {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto 28px;
  border-radius: 8px;
}

.v2-actions {
  display: flex;
  justify-content: center;
  margin: 16px 0 28px;
}

.feature-box {
  background: var(--white);
  border: 2px dashed rgba(136, 153, 103, 0.55);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 36px);
}

.feature-box h1 {
  margin-bottom: 22px;
  font-size: clamp(28px, 5vw, 46px);
}

.feature-box > ul {
  margin: 0;
  padding-left: 1.3em;
}

.feature-box li + li {
  margin-top: 16px;
}

.feature-box ul ul {
  margin-top: 6px;
  color: #555555;
}

.contact-form {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #c7c7c7;
  border-radius: 6px;
  padding: 12px;
  font: inherit;
  background: var(--white);
}

textarea {
  min-height: 180px;
  resize: vertical;
}

.note {
  color: #666666;
  font-size: 14px;
}

.footer-inner {
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 14px;
}

@media (max-width: 760px) {
  .header-inner {
    min-height: auto;
    padding: 16px 0;
    align-items: flex-start;
    flex-direction: column;
  }

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

  .hero,
  .section {
    padding: 40px 0;
  }

  .hero-grid > div:first-child {
    text-align: center;
  }

  .app-icon {
    margin-left: auto;
    margin-right: auto;
  }

  .actions {
    justify-content: center;
  }

  .hero-grid,
  .feature-grid,
  .feature-grid.reverse,
  .download-grid,
  .step {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .feature-grid.reverse .phone-wrap {
    order: 2;
  }
}