:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #0f766e;
  --accent-2: #134e4a;
  --soft: #ecfeff;
  --danger: #b91c1c;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(229,231,235,0.8);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  box-shadow: var(--shadow);
}

.hero {
  padding: 80px 0 64px;
  background: url('../images/hero-background_pc.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.72);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

@media (max-width: 720px) {
  .hero {
    background-image: url('../images/hero-background_sp.webp');
  }
}

.hero__center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  padding: 8px 12px;
  background: var(--soft);
  color: var(--accent-2);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 16px;
}

h1 {
  margin: 0 0 20px;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0 auto;
  color: var(--muted);
  font-size: 17px;
  max-width: 600px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
  justify-content: center;
}

.hero__trust {
  margin-top: 20px !important;
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}

.hero__trust span::before {
  content: "✓ ";
  color: var(--accent);
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
}

.hero-points {
  display: grid;
  gap: 12px;
}

.hero-point {
  padding: 14px 16px;
  background: #f8fafc;
  border-radius: 14px;
  border: 1px solid var(--line);
  font-size: 14px;
}

.section {
  padding: 56px 0;
}

.section__head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.section__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.2;
}

.section__lead {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.filters {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.field label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 8px;
}

.field select,
.field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  font: inherit;
  background: #fff;
  color: var(--text);
}

.filters__actions {
  display: flex;
  align-items: end;
  gap: 10px;
}

.result-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.product-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.card__top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 12px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  background: #f0fdf4;
  color: #166534;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.card h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.card__desc {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
  min-height: 66px;
}

.meta {
  display: grid;
  gap: 10px;
  margin-top: auto;
}

.meta__row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-top: 1px dashed var(--line);
  font-size: 14px;
}

.meta__label { color: var(--muted); }
.meta__value { font-weight: 800; text-align: right; }

.card__actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.chip {
  padding: 6px 10px;
  border-radius: 999px;
  background: #f8fafc;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.info-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.info-box,
.faq-item,
.contact-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.info-box h3,
.faq-item h3,
.contact-box h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.info-box p,
.faq-item p,
.contact-box p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.contact {
  background: linear-gradient(180deg, #f0fdfa 0%, #ffffff 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact__wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-points {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.contact-point {
  padding: 14px 16px;
  background: #fff;
  border-radius: 14px;
  border: 1px solid var(--line);
  font-size: 14px;
}

.site-footer {
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.empty {
  padding: 28px;
  background: #fff;
  border: 1px dashed var(--line);
  border-radius: 20px;
  color: var(--muted);
  text-align: center;
  margin-top: 24px;
}

.faq-title {
  text-align: center;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin: 0 0 36px;
  letter-spacing: -0.02em;
}

.faq-accordion {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-accordion details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}

.faq-accordion summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
}

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

.faq-accordion summary::after {
  content: "＋";
  color: var(--accent);
  font-size: 20px;
  font-weight: 400;
  flex-shrink: 0;
  line-height: 1;
}

.faq-accordion details[open] summary {
  background: #f8fafb;
}

.faq-accordion details[open] summary::after {
  content: "－";
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.contact-form-section {
  background: var(--bg);
  padding: 72px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-form-wrap {
  max-width: 640px;
  margin: 0 auto;
}

.contact-form-head {
  text-align: center;
  margin-bottom: 40px;
}

.contact-eyebrow {
  display: block;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.contact-form-head h2 {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 800;
}

.contact-form-head p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.contact-form {
  background: var(--card);
  border-radius: 22px;
  padding: 40px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.form-required {
  color: #b91c1c;
  margin-left: 4px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  transition: border-color 0.15s;
  box-sizing: border-box;
}

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

.form-input::placeholder,
.form-textarea::placeholder { color: #9ca3af; }

.form-hint {
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 0;
}

.form-textarea { resize: none; }

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.form-submit:hover { background: var(--accent-2); }

.cta-section {
  position: relative;
  overflow: hidden;
  background: var(--accent);
  padding: 72px 0;
}

.cta-section::before,
.cta-section::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 50%;
  opacity: 0.1;
  pointer-events: none;
}

.cta-section::before {
  width: 260px;
  height: 260px;
  top: 0;
  left: 0;
  transform: translate(-50%, -50%);
}

.cta-section::after {
  width: 400px;
  height: 400px;
  bottom: 0;
  right: 0;
  transform: translate(33%, 33%);
}

.cta-card {
  max-width: 860px;
  margin: 0 auto;
  background: #fff;
  border-radius: 28px;
  padding: 56px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-card h2 {
  font-size: clamp(18px, 3.5vw, 36px);
  font-weight: 800;
  margin: 0 0 20px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.cta-card__lead {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.75;
  margin: 0 0 36px;
}

.cta-card__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 18px 48px;
  background: var(--accent);
  color: #fff;
  border-radius: 16px;
  font-size: 18px;
  font-weight: 800;
  transition: 0.2s ease;
  box-shadow: 0 8px 24px rgba(15, 118, 110, 0.35);
}

.cta-card__btn:hover {
  background: var(--accent-2);
  transform: scale(1.03);
}

.cta-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.cta-trust__dot {
  width: 6px;
  height: 6px;
  background: var(--line);
  border-radius: 50%;
  flex-shrink: 0;
}

.cta-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 44px;
  padding-top: 44px;
  border-top: 1px solid var(--line);
}

.cta-stat__num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}

.cta-stat__label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.guide-dark {
  background: #0b2d2a;
  padding: 72px 0;
  border-top: none;
  border-bottom: none;
}

.guide-dark__head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}

.guide-dark__title {
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.guide-dark__lead {
  color: rgba(255, 255, 255, 0.55);
  font-size: 15px;
  margin: 0;
}

.guide-card {
  background: #163d39;
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 22px;
  padding: 28px;
}

.guide-card__icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}

.guide-card h3 {
  color: #fff;
  font-size: 19px;
  font-weight: 800;
  margin: 0 0 12px;
  line-height: 1.35;
}

.guide-card p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  margin: 0;
  line-height: 1.75;
}

@media (max-width: 1080px) {
  .filters { grid-template-columns: repeat(3, 1fr); }
  .product-grid,
  .info-grid,
  .faq-grid { grid-template-columns: repeat(2, 1fr); }
  .contact__wrap { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav { display: none; }
  .filters { grid-template-columns: repeat(2, 1fr); }
  .product-grid,
  .info-grid,
  .faq-grid { grid-template-columns: 1fr; }
  .card { padding: 16px; border-radius: 16px; }
  .card h3 { font-size: 18px; }
  .card__desc { min-height: unset; }
  .meta { gap: 0; }
  .meta__row { padding: 8px 0; font-size: 13px; }
  .card__actions { margin-top: 14px; }
  .section { padding: 42px 0; }
  .hero { padding-top: 42px; }
  .site-header__inner { align-items: center; }
  .header-cta { padding: 10px 14px; font-size: 13px; }
  .cta-card { padding: 32px 24px; }
  .cta-stats { grid-template-columns: repeat(2, 1fr); }
  .cta-card__btn { padding: 16px 32px; font-size: 16px; }
}