:root {
  --ink: #1d2420;
  --ink-muted: #55605a;
  --paper: #faf7ee;
  --paper-2: #f1ecda;
  --panel: #ffffff;
  --line: #dfe8e2;
  --accent: #0e8c7f;
  --accent-2: #0b6b60;
  --warn: #c2703d;
  --shadow: 0 14px 32px rgba(20, 40, 36, 0.07);
  --radius: 20px;
  --font-display: "Plus Jakarta Sans", "Zen Kaku Gothic New", "Hiragino Sans", sans-serif;
  --font-body: "Plus Jakarta Sans", "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(1100px 560px at 8% -10%, rgba(14, 140, 127, 0.12) 0%, transparent 55%),
    radial-gradient(900px 520px at 100% 0%, rgba(226, 168, 101, 0.14) 0%, transparent 48%),
    linear-gradient(180deg, #fffdf6 0%, var(--paper) 45%, #f4efe0 100%);
  line-height: 1.7;
}

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

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background: rgba(250, 247, 238, 0.86);
  border-bottom: 1px solid rgba(223, 232, 226, 0.8);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
}

.brand-en {
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

.nav {
  display: none;
  gap: 1.25rem;
  align-items: center;
}

.nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
}

.nav a:hover {
  color: var(--ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 0;
  border-radius: 999px;
  padding: 0.85rem 1.35rem;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

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

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

.btn-primary:hover {
  background: var(--accent-2);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: grid;
  align-items: end;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 8% -10% auto auto;
  width: min(52vw, 560px);
  height: min(52vw, 560px);
  border-radius: 40% 60% 55% 45%;
  background:
    linear-gradient(145deg, rgba(14, 140, 127, 0.18), rgba(11, 107, 96, 0.05)),
    repeating-linear-gradient(
      -18deg,
      transparent,
      transparent 12px,
      rgba(14, 140, 127, 0.06) 12px,
      rgba(14, 140, 127, 0.06) 13px
    );
  animation: drift 14s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: 8%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(226, 145, 74, 0.16), transparent 70%);
  animation: pulse 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  to {
    transform: translate3d(-18px, 22px, 0) rotate(8deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero-content {
  max-width: 40rem;
}

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

.hero-visual svg {
  width: min(100%, 440px);
  height: auto;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 4.4vw, 2.7rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

.hero-lead {
  color: var(--ink-muted);
  font-size: 1.05rem;
  margin: 0 0 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-note {
  margin: 1.25rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.section {
  padding: 4.5rem 0;
}

.section:nth-of-type(even) {
  background: rgba(255, 255, 255, 0.55);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-kicker {
  color: var(--accent-2);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}

.section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 0.85rem;
}

.section-lead {
  color: var(--ink-muted);
  max-width: 40rem;
  margin: 0 0 2rem;
}

.grid-2 {
  display: grid;
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
  box-shadow: var(--shadow);
}

.panel h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.panel p {
  margin: 0;
  color: var(--ink-muted);
}

/* Before / after comparison */
.before-after {
  display: grid;
  gap: 1rem;
  margin: 2rem 0 2.5rem;
}

.ba-panel {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.ba-panel figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.1rem;
  font-weight: 700;
}

.ba-before figcaption {
  background: rgba(194, 112, 61, 0.14);
  color: var(--warn);
}

.ba-after figcaption {
  background: rgba(14, 140, 127, 0.14);
  color: var(--accent-2);
}

.ba-panel p {
  margin: 0;
  padding: 0.9rem 1.1rem 1.1rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.steps {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}

.step {
  position: relative;
  padding-left: 3.4rem;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.compare {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.compare th,
.compare td {
  padding: 0.95rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.compare th {
  background: #e9f4f0;
  font-weight: 700;
}

.compare tr:last-child td {
  border-bottom: 0;
}

.note {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-top: 0.85rem;
}

.price {
  display: grid;
  gap: 1rem;
}

.price-main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 4.6vw, 3rem);
  margin: 0.2rem 0;
}

.price-sub {
  color: var(--ink-muted);
  margin: 0;
}

.price-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.price-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(14, 140, 127, 0.12);
  color: var(--accent-2);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 700;
}

/* FAQ */
.faq {
  display: grid;
  gap: 0.75rem;
}

.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.3rem 1.4rem;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 1.6rem 1.05rem 0;
  font-weight: 700;
  position: relative;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0.9rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  transition: transform 0.18s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin: 0 0 1.1rem;
  color: var(--ink-muted);
}

.compare .ok {
  color: var(--accent-2);
  font-weight: 700;
}

.compare .dim {
  color: var(--ink-muted);
}

.form {
  display: grid;
  gap: 0.9rem;
}

.form label {
  display: grid;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.form input,
.form select,
.form textarea {
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  background: #fff;
  color: var(--ink);
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: 2px solid rgba(14, 140, 127, 0.45);
  outline-offset: 1px;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

.hp {
  position: absolute;
  left: -10000px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

.form-status {
  min-height: 1.4rem;
  font-size: 0.92rem;
}

.form-status[data-state="ok"] {
  color: var(--accent-2);
}

.form-status[data-state="err"] {
  color: #b3392b;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0 3rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.site-footer a {
  color: var(--ink-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

.privacy-page {
  padding: 3rem 0 4rem;
}

.privacy-page h1 {
  font-family: var(--font-display);
  font-weight: 800;
}

@media (min-width: 760px) {
  .nav {
    display: flex;
  }

  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .price {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }

  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .before-after {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero::before,
  .hero::after {
    animation: none;
  }

  html {
    scroll-behavior: auto;
  }
}

.hero-eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(14, 140, 127, 0.12);
  color: var(--accent-2);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.trust-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.trust-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink-muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.usecase {
  display: grid;
  gap: 1rem;
}

.usecase article {
  border-left: 4px solid var(--accent);
}

.usecase dl {
  display: grid;
  gap: 0.55rem;
  margin: 0.85rem 0 0;
}

.usecase dt {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
}

.usecase dd {
  margin: 0;
  color: var(--ink-muted);
}

.strike-list {
  margin: 0.6rem 0 0;
  padding-left: 1.1rem;
  color: var(--ink-muted);
}

.strike-list li {
  margin: 0.25rem 0;
}

.strike-list .gone {
  text-decoration: line-through;
  opacity: 0.6;
}

.fit-grid {
  display: grid;
  gap: 1rem;
}

.fit-yes {
  border-color: rgba(14, 140, 127, 0.32);
  background: linear-gradient(180deg, #f2faf8, #fff);
}

.fit-no {
  border-color: rgba(194, 112, 61, 0.28);
  background: linear-gradient(180deg, #fdf5ee, #fff);
}

.fit-grid ul {
  margin: 0.75rem 0 0;
  padding-left: 1.15rem;
  color: var(--ink-muted);
}

.fit-grid li {
  margin: 0.35rem 0;
}

.safety-list {
  display: grid;
  gap: 0.85rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.safety-list li {
  padding: 0.95rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) - 4px);
  background: var(--panel);
}

.safety-list strong {
  display: block;
  margin-bottom: 0.25rem;
}

.safety-list span {
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.compare-cards {
  display: grid;
  gap: 1rem;
}

.compare-cards .panel h3 {
  margin-bottom: 0.75rem;
}

.compare-cards ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-muted);
}

.compare-table-wrap {
  display: none;
  overflow-x: auto;
}

.soft-details {
  margin-top: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0.2rem 1rem 0.8rem;
}

.soft-details summary {
  cursor: pointer;
  font-weight: 700;
  padding: 0.85rem 0;
}

.soft-details p {
  color: var(--ink-muted);
  margin: 0 0 0.75rem;
}

.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  gap: 0.6rem;
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
  background: rgba(250, 247, 238, 0.94);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.mobile-cta .btn {
  flex: 1;
  justify-content: center;
  text-align: center;
}

body {
  padding-bottom: 4.5rem;
}

@media (min-width: 760px) {
  .usecase {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .compare-cards {
    display: none;
  }

  .compare-table-wrap {
    display: block;
  }

  .mobile-cta {
    display: none;
  }

  body {
    padding-bottom: 0;
  }
}