:root {
  color-scheme: light;
  --bg: #f7faf8;
  --surface: #ffffff;
  --surface-soft: #edf6f1;
  --text: #17312d;
  --muted: #60726d;
  --line: #dbe7e2;
  --accent: #0d6f66;
  --accent-strong: #07544d;
  --cta: #c9852c;
  --cta-dark: #9a621a;
  --energy: #f2b84b;
  --blue: #2d7a91;
  --shadow: 0 18px 50px rgba(14, 54, 48, 0.1);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(247, 250, 248, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.nav,
.hero-actions {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  letter-spacing: 0;
}

.nav {
  gap: clamp(12px, 3vw, 28px);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(56px, 8vw, 96px) 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.72fr);
  gap: clamp(28px, 6vw, 72px);
  min-height: calc(100svh - 66px);
  align-items: center;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(44px, 7.4vw, 86px);
  line-height: 0.98;
  letter-spacing: 0;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.45;
}

p {
  color: var(--muted);
}

.hero-copy p {
  max-width: 650px;
  font-size: 18px;
}

.hero-line {
  width: fit-content;
  margin-bottom: 18px;
  padding: 6px 12px;
  border-left: 5px solid var(--cta);
  background: #fff4df;
  color: var(--cta-dark);
  font-size: 14px;
  font-weight: 900;
}

.hero-copy .hero-line {
  font-size: 14px;
}

.hero-mini-note {
  display: grid;
  gap: 4px;
  max-width: 620px;
  margin-top: 22px;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 30px rgba(14, 54, 48, 0.08);
}

.hero-mini-note strong {
  color: var(--text);
  font-size: 15px;
}

.hero-mini-note span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--cta);
  color: #fff;
  box-shadow: 0 12px 28px rgba(201, 133, 44, 0.24);
}

.button.primary:hover {
  background: var(--cta-dark);
}

.button.secondary {
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--accent-strong);
}

.action-cue {
  margin: 14px 0 0;
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 900;
}

.hero-panel,
.note-box,
.concern-grid article,
.point-list > div,
.product-card,
details,
.cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: clamp(24px, 4vw, 38px);
}

.hero-visual {
  position: relative;
  display: grid;
  gap: 18px;
  align-items: end;
}

.hero-visual .hero-panel {
  width: min(100%, 420px);
  margin: -28px auto 0;
}

.product-visual {
  position: relative;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 12px;
  width: min(100%, 580px);
  min-height: 390px;
  margin: 0 auto;
  padding: 156px 28px 28px;
  border-radius: 8px;
  background:
    linear-gradient(115deg, rgba(13, 111, 102, 0.1) 0 12%, transparent 12% 100%),
    radial-gradient(circle at 50% 22%, rgba(242, 184, 75, 0.16), transparent 36%),
    linear-gradient(135deg, #fff 0%, #eef6f2 100%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.donut-compare {
  position: absolute;
  top: 28px;
  left: 50%;
  width: min(320px, 74vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  background:
    radial-gradient(circle, #fff 0 34%, transparent 35%),
    conic-gradient(from -48deg, var(--cta) 0 31%, var(--accent) 31% 66%, var(--blue) 66% 100%);
  box-shadow: 0 24px 46px rgba(14, 54, 48, 0.16);
}

.donut-core {
  position: absolute;
  inset: 34%;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: var(--accent-strong);
  text-align: center;
  box-shadow: inset 0 0 0 1px var(--line);
}

.donut-core strong {
  display: block;
  font-size: 44px;
  line-height: 0.92;
}

.donut-core small {
  display: block;
  width: min-content;
  min-width: 76px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  line-height: 1.25;
}

.pack {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  min-width: 116px;
  min-height: 190px;
  padding: 18px 14px;
  border-radius: 18px 18px 10px 10px;
  border: 1px solid rgba(23, 49, 45, 0.12);
  box-shadow: 0 18px 32px rgba(14, 54, 48, 0.12);
  text-align: center;
}

.pack span,
.pack small {
  font-size: 11px;
  font-weight: 800;
}

.pack strong {
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0;
}

.pack-white {
  background: linear-gradient(180deg, #fff 0%, #f1f1ed 100%);
  color: #243c38;
  transform: translateY(10px) rotate(-2deg);
}

.pack-green {
  min-height: 230px;
  background: linear-gradient(180deg, #0d4a40 0%, #102d29 100%);
  color: #f7fff9;
}

.pack-amber {
  border-radius: 20px;
  background: linear-gradient(180deg, #d9b783 0%, #9f7446 100%);
  color: #2e241b;
  transform: translateY(18px) rotate(2deg);
}

.panel-title {
  margin-bottom: 18px;
  color: var(--accent-strong);
  font-weight: 800;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--text);
  font-weight: 700;
  position: relative;
}

.choice-flow {
  padding-top: clamp(20px, 4vw, 42px);
}

.choice-flow h2 {
  max-width: 780px;
  font-size: clamp(30px, 4.6vw, 54px);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 12px;
  align-items: stretch;
  margin-top: 22px;
}

.flow-grid article,
.flow-cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.flow-grid article {
  padding: 22px 20px 20px;
}

.flow-grid span {
  color: var(--cta);
  font-size: 12px;
  font-weight: 900;
}

.flow-grid h3 {
  margin: 8px 0 6px;
  font-size: 20px;
}

.flow-grid p {
  margin-bottom: 0;
  font-size: 14px;
}

.flow-cta {
  display: grid;
  min-width: 136px;
  place-items: center;
  padding: 18px;
  background: var(--accent-strong);
  color: #fff;
  font-weight: 900;
  text-align: center;
}

.concerns {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  gap: 32px;
  align-items: start;
}

.concern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.concern-grid article,
.point-list > div {
  padding: 24px;
}

.split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
}

.note-box {
  padding: 28px;
  background: #123d38;
}

.note-box h3,
.note-box p {
  color: #fff;
}

.point-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.point-list span {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--cta);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
}

.section-lead {
  max-width: 720px;
  margin-bottom: 24px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.product-card {
  position: relative;
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 26px;
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--cta), var(--accent));
}

.product-type {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
}

.product-card ul {
  display: grid;
  gap: 8px;
  margin: 4px 0 22px;
  padding-left: 18px;
  color: var(--muted);
}

.product-card .button {
  margin-top: auto;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

th,
td {
  padding: 18px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
  color: var(--accent-strong);
  font-size: 14px;
}

td {
  color: var(--muted);
}

.caution {
  padding: 36px;
  border-left: 4px solid var(--cta);
  background: #fff8ed;
}

.faq {
  display: grid;
  gap: 12px;
}

details {
  padding: 20px 22px;
}

summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 800;
}

details p {
  margin: 14px 0 0;
}

.cta {
  margin-bottom: 72px;
  padding: clamp(34px, 6vw, 64px);
  text-align: center;
  background:
    radial-gradient(circle at 18% 24%, rgba(242, 184, 75, 0.22), transparent 24%),
    linear-gradient(135deg, #123d38 0%, #0d6f66 100%);
}

.cta h2,
.cta p {
  color: #fff;
}

.cta .button {
  margin: 8px 6px 0;
}

.cta-sub {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
}

.footer {
  padding: 28px 18px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer p {
  margin: 0;
  font-size: 13px;
}

@media (max-width: 820px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .concerns,
  .split,
  .concern-grid,
  .point-list,
  .product-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 52px;
  }

  .section {
    width: min(100% - 28px, 1120px);
  }

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

  .flow-cta {
    min-height: 62px;
  }
}

@media (max-width: 520px) {
  .nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: 42px;
  }

  .button {
    width: 100%;
  }

  .product-visual {
    min-height: 350px;
    padding: 28px 12px 24px;
    gap: 7px;
  }

  .donut-compare {
    top: 22px;
    width: min(260px, 78vw);
  }

  .product-visual {
    padding-top: 178px;
  }

  .pack {
    min-width: 86px;
    min-height: 150px;
    padding: 14px 8px;
  }

  .pack strong {
    font-size: 18px;
  }

  .caution {
    padding: 24px;
  }

  .table-wrap {
    overflow-x: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
    min-width: 0;
    width: 100%;
  }

  thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }

  tr {
    margin-bottom: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  td {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
  }

  td::before {
    content: attr(data-label);
    color: var(--accent-strong);
    font-weight: 900;
  }

  td:last-child {
    border-bottom: 0;
  }
}