:root {
  --color-primary: #1c6e8c;
  --color-primary-dark: #114a5e;
  --color-accent: #f08c3a;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f8fa;
  --color-text: #2b2b2b;
  --color-text-light: #6b6b6b;
  --max-width: 1080px;
  --radius: 12px;
  --color-navy: #0c2a3d;
  --color-navy-light: #1a4d68;
  --color-gold: #d9b65c;
  --color-gold-light: #f3e2ab;

  /* フォント：見出し＝明朝(信頼感・清潔感)／本文＝ゴシック(可読性) ／強調数字＝太字ゴシック(訴求力) */
  --font-heading: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-serif: "Noto Serif JP", "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-display: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-weight: 400;
  font-size: 1.05rem;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.85;
  letter-spacing: 0.02em;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 400;
  letter-spacing: 0.03em;
}

p {
  font-weight: 400;
}

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

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

.sp-only {
  display: none;
}

@media (max-width: 600px) {
  .sp-only {
    display: inline;
  }
}

/* ボタン */
.btn {
  display: inline-block;
  padding: 16px 36px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(240, 140, 58, 0.4);
  transition: transform 0.15s ease;
}

.btn--primary:hover {
  transform: translateY(-2px);
}

/* ヘッダー */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid #eee;
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
}

.header__logo span {
  font-family: var(--font-display);
  font-size: 0.6rem;
  color: var(--color-text-light);
  font-weight: 800;
  letter-spacing: 0.1em;
}

.header__cta {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 14px 26px 12px;
  background: linear-gradient(180deg, #f6a623 0%, #ef8d11 100%);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(193, 110, 8, 0.32);
  font-family: var(--font-heading);
  white-space: nowrap;
  text-align: center;
}

.header__cta-badge {
  position: absolute;
  top: -11px;
  right: 12px;
  padding: 4px 11px;
  background: #ffe000;
  color: #1c1c1c;
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.01em;
  border-radius: 8px;
  box-shadow: 0 3px 7px rgba(0, 0, 0, 0.18);
}

.header__cta-title {
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.header__cta-sub {
  padding-top: 5px;
  border-top: 1px solid rgba(255, 255, 255, 0.6);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.01em;
}

/* ファーストビュー */
.fv {
  background-image: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0) 70%, #fff 100%),
    url("../img/hero-main.png");
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  padding: 70px 20px 60px;
  text-align: left;
}

.fv__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.fv__eyebrow {
  display: inline-block;
  background: var(--color-navy);
  color: var(--color-gold-light);
  padding: 6px 22px;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}

.fv__corner {
  display: block;
  width: 64px;
  height: 20px;
  border-top: 4px solid var(--color-gold);
  border-left: 4px solid var(--color-gold);
  margin-bottom: 16px;
}

.fv__title {
  font-family: var(--font-serif);
  font-weight: 900;
  color: var(--color-navy);
  margin: 0 0 22px;
  letter-spacing: 0.02em;
  text-shadow: 0 0 16px #fff, 0 0 16px #fff, 0 0 8px #fff;
  line-height: 1.2;
}

.fv__title-sm {
  display: block;
  font-size: 2.2rem;
}

.fv__title-lg {
  display: block;
  font-size: 4.4rem;
  line-height: 1.05;
  letter-spacing: 0.04em;
}

.fv__title-md {
  display: block;
  font-size: 2.8rem;
  margin-top: 4px;
}

.fv__lead-q {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-navy);
  text-shadow: 0 0 12px #fff, 0 0 12px #fff;
  line-height: 1.8;
  margin: 0 0 22px;
  padding-left: 16px;
  border-left: 3px solid var(--color-gold);
}

.fv__lead-strong {
  position: relative;
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 900;
  color: #b9842a;
  text-shadow: 0 0 14px #fff, 0 0 14px #fff;
  margin: 0 0 30px;
  padding-bottom: 10px;
}

.fv__lead-strong::after {
  content: "";
  position: absolute;
  left: -10px;
  right: -10px;
  bottom: -2px;
  height: 13px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 22' preserveAspectRatio='none'%3E%3Cpath d='M4 15 C70 11 140 13 205 10 C252 8 292 10 316 7 C300 12 256 12 208 14 C142 16 72 16 10 16 C5 16 3 15 4 15 Z' fill='%23b9842a'/%3E%3Cpath d='M232 14 C262 13 288 12 312 9' stroke='%23b9842a' stroke-width='0.7' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
}

.fv__copy {
  font-family: var(--font-body);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--color-navy);
  text-shadow: 0 0 14px #fff, 0 0 14px #fff;
  margin: 0 0 24px;
}

.fv__copy strong {
  font-family: var(--font-display);
  color: #b9842a;
  font-size: 2.3rem;
  font-weight: 900;
}

.fv__price-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid var(--color-gold);
  border-radius: var(--radius);
  padding: 14px 28px;
  margin-bottom: 28px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-navy);
}

.fv__price-badge strong {
  font-weight: 900;
  color: #b9842a;
  font-size: 1.5rem;
}

.fv__btn {
  display: block;
  margin: 0 auto 16px;
  max-width: 400px;
  font-size: 1.2rem;
}

.fv__note {
  font-family: "M PLUS 1p", "Noto Sans JP", sans-serif;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--color-navy);
  text-shadow: 0 0 10px #fff, 0 0 10px #fff;
  margin-bottom: 36px;
}

/* トラストバッジ(メダル：画像) */
.trust-badges {
  display: block;
}

.trust-badges__img {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
}

.trust-badges__note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--color-navy);
  opacity: 0.65;
  text-shadow: 0 0 8px #fff;
}

@media (max-width: 600px) {
  .fv__copy {
    font-size: 1.1rem;
  }
}

/* 共通セクション */
.section {
  padding: 36px 20px;
}

.section__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section__inner--center {
  text-align: center;
}

.section__title {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 2.1rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-primary-dark);
  margin: 0 0 32px;
}

.section__title--accent {
  position: relative;
  padding-bottom: 16px;
  color: var(--color-navy);
  font-family: var(--font-serif);
  font-weight: 900;
}

.section__title--accent::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 64px;
  height: 3px;
  border-radius: 3px;
  background: var(--color-gold);
}

.down-chevron {
  text-align: center;
  margin-bottom: 10px;
}

.down-chevron svg {
  width: 42px;
  height: auto;
  display: inline-block;
}

.lead {
  text-align: center;
  font-weight: 400;
  font-size: 1.1rem;
  max-width: 720px;
  margin: 0 auto 32px;
}

.ba-photo {
  max-width: 620px;
  margin: 0 auto;
}

.ba-photo img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(12, 42, 61, 0.18);
}

.ba-photo figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.section--problem,
.section--guarantee,
.section--company,
.section--faq {
  background: var(--color-bg-alt);
}

.problem-box {
  background: #fff;
  border-left: 4px solid var(--color-accent);
  padding: 20px;
  border-radius: 8px;
  max-width: 720px;
  margin: 0 auto;
  color: var(--color-text-light);
}

/* プレースホルダー画像 */
.img-placeholder {
  background: #e3e9ec;
  color: #8a97a0;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.9rem;
  aspect-ratio: 4 / 3;
  padding: 12px;
}

.img-placeholder--small {
  max-width: 320px;
}

/* Before/After */
.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.before-after__item p {
  text-align: center;
  font-weight: 800;
  margin-top: 8px;
}

/* 強み（選ばれる理由） */
.section--strength {
  position: relative;
  overflow: hidden;
  padding-top: 0;
  background: #ffffff;
}

.section--strength::before {
  display: none;
}

.section--strength .section__inner {
  position: relative;
  z-index: 1;
}

/* 見出し（画像／横幅いっぱい） */
.strength-head {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-bottom: 44px;
}

.strength-head__img {
  display: block;
  width: 100%;
  max-width: none;
  height: auto;
}

.strength-heading {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 2.2rem;
  line-height: 1.4;
  color: var(--color-navy);
  margin: 0;
  text-align: center;
  letter-spacing: 0.04em;
}

.laurel {
  width: 46px;
  height: auto;
  flex-shrink: 0;
}

.laurel--right {
  transform: scaleX(-1);
}

.strength-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.strength-card {
  background: #fdfdfb;
  border: none;
  border-radius: 24px;
  padding: 32px 34px 36px;
  text-align: left;
  box-shadow: 0 14px 34px rgba(12, 42, 61, 0.1);
}

.strength-card__badge {
  width: 70px;
  height: 70px;
  background: #143456;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
}

.strength-card__badge span {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.9rem;
  color: #fff;
  line-height: 1;
  letter-spacing: 0.02em;
}

.strength-card__title {
  font-family: "Noto Sans JP", sans-serif;
  color: var(--color-navy);
  margin: 0;
  font-size: 2.05rem;
  font-weight: 900;
  line-height: 1.5;
}

.strength-card__title .hl {
  background: linear-gradient(transparent 64%, #ffe48f 64%, #ffe48f 92%, transparent 92%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  padding: 0 2px;
}

.strength-card__title .accent {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1em;
  color: var(--color-accent);
}

.strength-card__title .accent--num {
  font-size: 1.5em;
}

.strength-card__desc {
  position: relative;
  font-family: "Noto Sans JP", sans-serif;
  color: #41525d;
  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.95;
  margin: 26px 0 0;
  padding-top: 26px;
}

.strength-card__desc::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-image: radial-gradient(circle, #9cc1e0 1.7px, transparent 2px);
  background-size: 13px 4px;
  background-repeat: repeat-x;
  background-position: left center;
}

@media (max-width: 600px) {
  .strength-grid {
    grid-template-columns: 1fr;
  }
  .strength-heading {
    font-size: 1.7rem;
  }
  .laurel {
    width: 38px;
  }
  .strength-card__title {
    font-size: 1.65rem;
  }
}

/* 無理な営業は一切いたしません */
.section--assurance {
  background: var(--color-bg-alt);
}

.assurance {
  max-width: 760px;
  margin: 0 auto;
}

.assurance__head {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: #fdfbe9;
  border: 2px dashed #e7c95a;
  border-radius: 22px;
  padding: 26px 30px;
}

.assurance__head::before,
.assurance__head::after {
  content: "✦";
  position: absolute;
  color: #f0c84a;
  font-size: 1rem;
  opacity: 0.8;
}

.assurance__head::before {
  top: 12px;
  left: 18px;
}

.assurance__head::after {
  bottom: 12px;
  right: 18px;
}

.assurance__shield {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  filter: drop-shadow(0 3px 5px rgba(28, 110, 140, 0.3));
}

.assurance__shield svg {
  width: 100%;
  height: 100%;
  display: block;
}

.assurance__title {
  font-family: "M PLUS 1p", "Noto Sans JP", sans-serif;
  font-weight: 900;
  font-size: 1.7rem;
  color: var(--color-navy);
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.assurance__note {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border: 1px solid #d7e6f0;
  border-radius: 16px;
  padding: 20px 26px;
  margin-top: 18px;
  box-shadow: 0 6px 18px rgba(12, 42, 61, 0.06);
}

.assurance__note-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
}

.assurance__note-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.assurance__note p {
  margin: 0;
  text-align: left;
  font-weight: 700;
  color: var(--color-text);
}

.assurance__note strong {
  color: var(--color-accent);
  font-weight: 900;
  font-size: 1.2em;
}

@media (max-width: 600px) {
  .assurance__head {
    flex-direction: column;
    gap: 12px;
    padding: 22px 18px;
  }
  .assurance__title {
    font-size: 1.3rem;
  }
  .assurance__note {
    flex-direction: column;
    gap: 12px;
    text-align: center;
    padding: 18px;
  }
  .assurance__note p {
    text-align: center;
  }
}

/* 施工事例 */
.case-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 780px;
  margin: 0 auto;
}

.case-item {
  margin: 0;
}

.case-item img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(12, 42, 61, 0.18);
}

/* 保証 */
.guarantee-flex {
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.guarantee-list {
  max-width: 420px;
  padding-left: 1.2em;
}

.guarantee-list li {
  margin-bottom: 12px;
}

/* 運営会社 */
.company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.company-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
}

.company-card h3 {
  color: var(--color-primary-dark);
  margin-top: 0;
}

@media (max-width: 700px) {
  .company-grid {
    grid-template-columns: 1fr;
  }
}

/* お客様の声 */
.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.voice-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 20px;
}

.voice-card__area {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--color-primary);
  margin: 0 0 8px;
}

@media (max-width: 700px) {
  .voice-grid {
    grid-template-columns: 1fr;
  }
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

.faq-item summary {
  font-family: var(--font-heading);
  font-weight: 800;
  cursor: pointer;
  color: var(--color-primary-dark);
}

.faq-item p {
  margin: 12px 0 0;
  color: var(--color-text-light);
}

/* 価格表 */
.price-table {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  border-collapse: collapse;
}

.price-table th,
.price-table td {
  border: 1px solid #e0e0e0;
  padding: 16px;
  text-align: left;
}

.price-table th {
  background: var(--color-bg-alt);
  width: 50%;
}

.price-table th {
  font-family: var(--font-heading);
  font-weight: 800;
}

.price-table td {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--color-accent);
  font-size: 1.2rem;
}

/* 価格（画像／横幅いっぱい） */
.section--price {
  overflow: hidden;
  padding: 0;
}

.price-photo {
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

.price-photo img {
  display: block;
  width: 100%;
  height: auto;
}

/* 利用の流れ */
.flow-list {
  max-width: 480px;
  margin: 0 auto;
  padding-left: 1.4em;
}

.flow-list li {
  font-family: var(--font-display);
  margin-bottom: 14px;
  font-weight: 800;
}

.flow-photo {
  margin: 0 auto;
  max-width: 820px;
}

.flow-photo img {
  width: 100%;
  height: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* お問い合わせ */
.section--contact {
  background: var(--color-primary-dark);
  color: #fff;
}

.section--contact .section__title {
  color: #fff;
}

.contact-form {
  max-width: 480px;
  margin: 0 auto;
  text-align: left;
}

.form-row {
  margin-bottom: 16px;
}

.form-row label {
  display: block;
  margin-bottom: 6px;
  font-weight: 800;
}

.required {
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 3px;
  margin-left: 8px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: none;
  font-size: 1rem;
}

.contact-form__submit {
  display: block;
  width: 100%;
  margin-top: 8px;
}

.contact-tel {
  margin-top: 24px;
}

.contact-tel a {
  color: #fff;
  font-weight: 800;
  text-decoration: underline;
}

/* フッター */
.footer {
  background: #0d2f3c;
  color: #cbd6da;
  padding: 30px 20px;
  text-align: center;
  font-size: 0.85rem;
}

.footer a {
  color: #cbd6da;
}

.footer__logo {
  display: inline-block;
  background: #fff;
  padding: 14px 22px;
  border-radius: 10px;
  margin-bottom: 18px;
}

.footer__logo img {
  width: 200px;
  max-width: 70vw;
  height: auto;
}

/* ===== レスポンシブ強化（スマホ最適化） ===== */

/* タブレット以下 */
@media (max-width: 768px) {
  .section {
    padding: 30px 18px;
  }
  .section__title {
    font-size: 1.7rem;
    margin-bottom: 24px;
  }
  .fv {
    padding: 48px 18px;
  }
  .fv__title-lg {
    font-size: 3.6rem;
  }
  .fv__title-md {
    font-size: 2.4rem;
  }
  .fv__inner {
    max-width: 100%;
  }
}

/* スマホ（縦） */
@media (max-width: 600px) {
  body {
    font-size: 1rem;
    line-height: 1.8;
  }
  .section {
    padding: 26px 16px;
  }
  .section__title {
    font-size: 1.5rem;
    margin-bottom: 22px;
  }
  .lead {
    font-size: 1rem;
  }
  .fv {
    padding: 40px 16px 44px;
  }
  .fv__title-sm {
    font-size: 1.6rem;
  }
  .fv__title-lg {
    font-size: 2.9rem;
  }
  .fv__title-md {
    font-size: 1.9rem;
  }
  .fv__lead-q {
    font-size: 1rem;
    line-height: 1.8;
  }
  .fv__lead-strong {
    font-size: 1.8rem;
  }
  .trust-badges__img {
    max-width: 100%;
    margin: 0 auto;
  }
  .header__logo {
    font-size: 1.05rem;
  }
  .header__cta {
    padding: 11px 14px 9px;
    border-radius: 10px;
  }
  .header__cta-badge {
    font-size: 0.6rem;
    padding: 3px 8px;
    top: -9px;
    right: 8px;
  }
  .header__cta-title {
    font-size: 0.92rem;
    letter-spacing: 0.02em;
  }
  .header__cta-sub {
    display: none;
  }
  .price-table th,
  .price-table td {
    padding: 12px 10px;
    font-size: 0.95rem;
  }
  .price-table td {
    font-size: 1.05rem;
  }
  .strength-card {
    padding: 32px 22px 24px;
  }
  .company-card,
  .voice-card,
  .faq-item {
    padding: 18px 16px;
  }
  .footer__logo img {
    width: 160px;
  }
  .btn {
    padding: 15px 28px;
    font-size: 1.05rem;
  }
}

/* 小型スマホ（iPhone SE / 320〜380px） */
@media (max-width: 380px) {
  .fv__title-sm {
    font-size: 1.4rem;
  }
  .fv__title-lg {
    font-size: 2.5rem;
  }
  .fv__title-md {
    font-size: 1.65rem;
  }
  .fv__lead-strong {
    font-size: 1.55rem;
  }
  .section__title {
    font-size: 1.35rem;
  }
}

/* 選ばれる理由：上余白を全画面で0に（メディアクエリより優先） */
.section.section--strength {
  padding-top: 0;
}

/* PC表示：全幅画像が大きくなりすぎないよう中央寄せ＋上限幅 */
@media (min-width: 768px) {
  .strength-head {
    width: auto;
    margin-left: auto;
  }
  .strength-head__img {
    max-width: 540px;
    margin: 0 auto;
  }
  /* PCでは理由カードを横2列に並べる */
  .section--strength .section__inner {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
  }
  .strength-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .strength-card {
    padding: 32px 28px 28px;
  }
  .strength-card__title {
    font-size: 1.75rem;
  }
  /* 価格・流れもスマホと同じサイズ感：幅を絞って中央寄せ */
  .price-photo {
    width: auto;
    margin-left: auto;
    margin-right: auto;
  }
  .price-photo img {
    max-width: 540px;
    margin: 0 auto;
  }
  .flow-photo {
    max-width: 540px;
  }
}