/**
 * リモートお助け隊 - スタイルシート
 *
 * 構成:
 * 1. CSS変数 (デザインシステム)
 * 2. リセット・ベーススタイル
 * 3. レイアウトユーティリティ
 * 4. ヘッダー・ナビゲーション
 * 5. ヒーローセクション
 * 6. サービスセクション
 * 7. 準備度診断
 * 8. ケーススタディ
 * 9. プロセス・タイムライン
 * 10. 料金プラン
 * 11. FAQ
 * 12. お問い合わせフォーム
 * 13. フッター
 * 14. アニメーション
 * 15. アクセシビリティ
 * 16. レスポンシブデザイン
 */

/* ==========================================================================
   1. CSS変数 (デザインシステム)
   ========================================================================== */

:root {
  /* カラーパレット */
  --ink: #11153f;
  --pine: #11153f;
  --mint: #e7f8fa;
  --lime: #35bfd2;
  --cream: #fff;
  --sand: #f4f8f9;
  --line: #dce6e8;
  --muted: #536173;

  /* タイポグラフィ */
  --display: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* ==========================================================================
   2. リセット・ベーススタイル
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--display);
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
}

/* ==========================================================================
   3. レイアウトユーティリティ
   ========================================================================== */

.section-wrap {
  max-width: 1280px;
  margin: auto;
  padding-left: 40px;
  padding-right: 40px;
}

.section-pad {
  padding-top: 118px;
  padding-bottom: 118px;
}

/* ==========================================================================
   4. ヘッダー・ナビゲーション
   ========================================================================== */

.site-header {
  height: 104px;
  max-width: 1440px;
  margin: auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 5;
}

/* ブランドロゴ */
.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.055em;
  font-size: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 800;
  border-radius: 50%;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.15;
}

.brand-service {
  white-space: nowrap;
}

.brand-dot {
  color: #1faec3;
}

.brand-owner {
  margin-top: 3px;
  color: #6d7b80;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

/* ナビゲーション */
nav {
  display: flex;
  gap: 28px;
}

nav a {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s;
}

nav a:hover {
  color: #137451;
}

/* ヘッダーCTAボタン */
.header-cta {
  display: flex;
  align-items: center;
  gap: 11px;
  background: #36b9d0;
  color: white;
  text-decoration: none;
  border-radius: 999px;
  padding: 12px 23px;
  font-weight: 700;
  font-size: 14px;
}

.header-cta span {
  color: #fff;
}

/* モバイルナビゲーション */
.mobile-nav {
  display: none;
}

/* ==========================================================================
   5. ヒーローセクション
   ========================================================================== */

.hero {
  min-height: 575px;
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  align-items: center;
  gap: 58px;
  padding-top: 48px;
  padding-bottom: 82px;
}

/* アイブラウ (セクションラベル) */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #198ca0;
  font: 500 11px/1.2 var(--mono);
  letter-spacing: 0.11em;
  font-weight: 700;
}

.eyebrow span {
  width: 0;
}

.eyebrow.light {
  color: #a8c7bc;
}

/* 見出し */
.hero h1,
.section-heading h2,
.case-header h2,
.process h2,
.pricing h2,
.faq h2,
.contact h2 {
  color: var(--ink);
  font-size: clamp(35px, 4.1vw, 56px);
  line-height: 1.35;
  letter-spacing: -0.075em;
  margin: 15px 0 21px;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(42px, 4.5vw, 61px);
  line-height: 1.28;
  margin: 18px 0 20px;
}

.hero h1 em {
  display: inline;
  color: #fff;
  background: #55c3cf;
  padding: 0 0.17em 0.06em;
  font-style: normal;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* ヒーローテキスト */
.hero-text {
  color: #435065;
  font-size: 15px;
  line-height: 2;
  max-width: 510px;
  margin: 0;
}

/* アクションボタン */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 23px;
  margin-top: 27px;
}

/* ボタン共通スタイル */
.button {
  border: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  padding: 15px 27px;
  border-radius: 999px;
  text-decoration: none;
  font: 700 15px var(--display);
  transition: transform 0.2s, box-shadow 0.2s;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px #0e3d3824;
}

.button.primary {
  background: #33b8cf;
  color: white;
}

.button span {
  color: #fff;
  font-size: 18px;
  line-height: 1;
}

/* テキストリンク */
.text-link {
  color: var(--ink);
  font-weight: 700;
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 5px;
}

.text-link span {
  color: #2fb1c7;
  margin-left: 5px;
}

/* 信頼性インジケーター */
.trust-row {
  display: flex;
  gap: 22px;
  margin-top: 38px;
}

.trust-row > div {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 8px;
  align-items: end;
  background: #f1fafb;
  padding: 10px 13px;
  border-radius: 3px;
}

.trust-row strong {
  color: #1da4b8;
  font: 500 17px/1 var(--mono);
  letter-spacing: -0.08em;
}

.trust-row span {
  font-size: 10px;
  line-height: 1.2;
  color: #576679;
  padding-bottom: 1px;
}

/* ヒーロー画像 */
.hero-art.hero-photo {
  height: 462px;
  overflow: hidden;
  border-radius: 235px 0 0 235px;
  background: #ecf2f2;
  isolation: auto;
}

.hero-photo picture {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   6. サービスセクション
   ========================================================================== */

/* 問題提起ストリップ */
.problem-strip {
  background: #f5f9fa;
  color: var(--ink);
  border-top: 1px solid #e6eff0;
  border-bottom: 1px solid #e6eff0;
}

.problem-grid {
  min-height: 260px;
  display: grid;
  grid-template-columns: 0.85fr 1.2fr 1fr;
  align-items: center;
  gap: 34px;
}

.problem-grid .eyebrow {
  color: #1991a5;
}

.problem-grid h2 {
  font-size: 29px;
  letter-spacing: -0.06em;
  line-height: 1.48;
  margin: 0;
}

.problem-grid h2 em {
  font-style: normal;
  color: #1599ad;
}

.problem-list p {
  color: #3d5060;
  border-bottom: 1px solid #d4e4e7;
  margin: 0;
  padding: 10px 0;
  font-size: 13px;
}

.problem-list span {
  font: 11px var(--mono);
  color: #1fa4ba;
  margin-right: 12px;
}

/* セクション見出し */
.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 100px;
  align-items: end;
}

.section-heading .eyebrow {
  grid-column: 1;
}

.section-heading h2 {
  grid-column: 1;
  margin-bottom: 0;
}

.section-heading h2 strong,
.process h2 strong {
  font-weight: inherit;
  color: #1fa6b9;
}

.section-heading > p:last-child {
  color: #526174;
  font-size: 14px;
  line-height: 2;
  max-width: 410px;
}

/* サービスグリッド */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.service-card {
  min-height: 350px;
  padding: 28px 29px;
  position: relative;
  border-radius: 0;
  border: 1px solid #dce8ea;
  background: #fff !important;
  color: var(--ink) !important;
  box-shadow: 0 11px 30px #10163f0b;
}

/* サービスカード上部のアクセントライン */
.service-card:before {
  content: '';
  display: block;
  width: 42px;
  height: 5px;
  background: #43c2d0;
  margin: -28px -29px 28px;
}

.service-card:nth-child(2):before {
  background: #a9dfe4;
}

.service-card:nth-child(3):before {
  background: #11153f;
}

.card-number {
  font: 500 10px var(--mono);
  letter-spacing: 0.07em;
  margin: 0;
  color: #20a1b3;
}

.service-icon {
  margin-top: 27px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid #9edbe2;
  border-radius: 50%;
  font-size: 20px;
  color: #1fa6ba;
}

.service-card h3 {
  font-size: 24px;
  letter-spacing: -0.06em;
  margin: 22px 0 9px;
  color: var(--ink);
}

.service-card > p:not(.card-number) {
  font-size: 13px;
  line-height: 1.9;
  color: #536273;
  margin: 0;
}

.service-card ul {
  position: absolute;
  left: 27px;
  right: 27px;
  bottom: 18px;
  margin: 0;
  padding: 13px 0 0;
  list-style: none;
  border-top: 1px solid #dce8ea;
  color: #536273;
  font-size: 11px;
  line-height: 2;
}

.service-card li:before {
  content: '→';
  margin-right: 7px;
  color: #1eb0c3;
}

/* ==========================================================================
   7. 準備度診断
   ========================================================================== */

.readiness {
  padding-top: 0;
}

.readiness-box {
  background: #11153f;
  color: #fff;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 55px;
  padding: 54px 58px;
}

.readiness-intro h2 {
  font-size: 34px;
  line-height: 1.45;
  letter-spacing: -0.07em;
  margin: 13px 0;
  color: #fff;
}

.readiness-intro h2 em {
  font-style: normal;
  color: #68d6e2;
}

.readiness-intro > p:last-child {
  font-size: 12px;
  line-height: 2;
  color: #c1d3df;
}

.readiness-form fieldset {
  border: 0;
  border-top: 1px solid #44506e;
  padding: 14px 0 13px;
  margin: 0;
}

.readiness-form legend {
  font-size: 13px;
  font-weight: 600;
  padding: 0 0 8px;
  line-height: 1.6;
}

.readiness-form legend b {
  font: 500 11px var(--mono);
  color: #63d5e3;
  margin-right: 8px;
}

.readiness-form label {
  display: inline-flex;
  align-items: center;
  margin: 0 16px 0 0;
  font-size: 11px;
  color: #d0d9e6;
  cursor: pointer;
}

.readiness-form input {
  accent-color: #45c9d7;
  margin: 0 5px 0 0;
}

.readiness-form .button.primary {
  background: #44c4d2;
  margin-top: 11px;
}

.readiness-result {
  display: none;
  background: #fffdf8;
  padding: 13px 15px;
  color: #36485d;
  font-size: 12px;
  line-height: 1.8;
}

.readiness-result.show {
  display: block;
  margin: 16px 0 0;
}

.readiness-result strong {
  color: #157e92;
}

/* ==========================================================================
   8. ケーススタディ
   ========================================================================== */

.cases {
  background: #f4f8f9;
}

.case-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 35px;
}

.case-header h2 {
  font-size: 44px;
  margin-bottom: 0;
}

.case-header > p {
  max-width: 300px;
  color: #516075;
  font-size: 13px;
  margin: 0 0 5px;
}

/* ケースタブ */
.case-tabs {
  margin: 46px 0 0;
  display: flex;
  border-bottom: 1px solid #cedee1;
  gap: 26px;
}

.case-tabs button {
  color: #5b6978;
  background: transparent;
  border: 0;
  padding: 10px 3px;
  font: 600 13px var(--display);
  cursor: pointer;
  position: relative;
  min-height: 44px;
  touch-action: manipulation;
}

.case-tabs button.active {
  color: #168b9f;
}

.case-tabs button.active:after {
  content: '';
  position: absolute;
  height: 2px;
  left: 0;
  right: 0;
  bottom: -1px;
  background: #36bfd0;
}

/* ケースパネル */
.case-panel {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  margin-top: 35px;
  background: #fff;
  border: 1px solid #d8e4e6;
  min-height: 367px;
}

.case-panel:focus-visible {
  outline: 3px solid #35b9cf;
  outline-offset: 4px;
}

/* ケースビジュアル */
.case-visual {
  background: #cfeef1;
  position: relative;
  overflow: hidden;
  padding: 22px;
}

.visual-tag {
  font: 500 10px var(--mono);
  letter-spacing: 0.08em;
  color: #18889b;
  margin: 0;
}

.blueprint {
  width: 235px;
  height: 210px;
  position: absolute;
  bottom: 10px;
  left: 30%;
  border-left: 2px solid #55bfc9;
  border-bottom: 2px solid #55bfc9;
  transform: skewY(-8deg);
  opacity: 0.9;
}

.blueprint b {
  position: absolute;
  right: 30px;
  top: 78px;
  color: #107a91;
  font: 500 44px Georgia, serif;
}

.bp-line {
  position: absolute;
  border-top: 1px solid #86b89e;
}

.l1 {
  width: 165px;
  top: 55px;
  left: 0;
}

.l2 {
  width: 183px;
  top: 124px;
  left: 0;
}

.l3 {
  height: 185px;
  border-left: 1px solid #86b89e;
  left: 103px;
  top: 0;
}

.bp-square {
  position: absolute;
  width: 42px;
  height: 42px;
  border: 1px solid #86b89e;
}

.s1 {
  top: 9px;
  left: 45px;
}

.s2 {
  bottom: 20px;
  right: 19px;
}

.visual-caption {
  position: absolute;
  bottom: 21px;
  right: 25px;
  color: #107a91;
  font-size: 15px;
  line-height: 1.5;
  font-weight: 600;
}

/* ケースコンテンツ */
.case-content {
  padding: 40px 48px;
}

.case-type {
  font: 500 11px var(--mono);
  letter-spacing: 0.07em;
  color: #18889b;
  margin: 0;
}

.case-content h3 {
  font-size: 31px;
  letter-spacing: -0.06em;
  line-height: 1.45;
  margin: 14px 0 11px;
  color: var(--ink);
}

.case-content h3 span {
  color: #1a9db1;
  font-family: var(--mono);
}

.case-content > p:not(.case-type) {
  color: #536273;
  font-size: 13px;
  line-height: 1.9;
  max-width: 500px;
}

.case-result {
  margin-top: 21px;
  display: flex;
  align-items: center;
  gap: 30px;
}

.case-result > div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.case-result strong {
  font: 500 30px/1 var(--mono);
  color: #159bb1;
}

.case-result span {
  font-size: 10px;
  line-height: 1.4;
  color: #586b63;
}

.case-result blockquote {
  font-size: 11px;
  line-height: 1.7;
  color: #536273;
  border-left: 1px solid #78cad4;
  padding-left: 14px;
  margin: 0;
  max-width: 270px;
}

/* ==========================================================================
   9. プロセス・タイムライン
   ========================================================================== */

.process {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 65px;
}

.process h2 {
  font-size: 42px;
  color: var(--ink);
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  gap: 18px;
  border-top: 1px solid #dbe6e8;
  padding: 20px 0 21px;
  align-items: start;
}

.timeline li:last-child {
  border-bottom: 1px solid #dbe6e8;
}

.timeline li > span {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #d9f3f5;
  color: #168ca0;
  font: 11px var(--mono);
}

.timeline h3 {
  font-size: 16px;
  line-height: 1.3;
  margin: 2px 0 3px;
  letter-spacing: -0.03em;
}

.timeline p {
  margin: 0;
  color: #536273;
  font-size: 12px;
  line-height: 1.8;
}

.timeline b {
  font: 10px var(--mono);
  color: #7f8c98;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

/* ==========================================================================
   10. 料金プラン
   ========================================================================== */

.pricing {
  background: #11153f;
  color: #f7f5ee;
}

.pricing-heading {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: end;
  column-gap: 70px;
}

.pricing-heading h2 {
  grid-column: 1;
  margin-bottom: 0;
  color: #fff;
}

.pricing-heading > p:last-child {
  color: #c4d5df;
  margin: 0 0 8px;
  max-width: 380px;
  font-size: 13px;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin-top: 50px;
}

.price-card {
  border: 1px solid #43516e;
  padding: 26px 25px;
  min-height: 253px;
  position: relative;
}

.price-card.featured {
  background: #55c5d0;
  border-color: #55c5d0;
}

.plan-label {
  font: 500 10px var(--mono);
  letter-spacing: 0.08em;
  color: #8edbe4;
  margin: 0;
}

.featured .plan-label {
  color: #125d70;
}

.price-card h3 {
  font-size: 20px;
  margin: 13px 0 9px;
  letter-spacing: -0.05em;
  color: #fff;
}

.featured h3,
.featured .price {
  color: #11153f;
}

.price {
  font: 500 28px/1.2 var(--mono);
  letter-spacing: -0.08em;
  margin: 0;
}

.price small {
  font: 500 11px var(--display);
  letter-spacing: 0;
}

.price-card > p:not(.plan-label):not(.price) {
  font-size: 11px;
  color: #c2d1db;
  line-height: 1.85;
  margin: 14px 0;
}

.featured > p:not(.plan-label):not(.price) {
  color: #174e5e;
}

.price-card a {
  position: absolute;
  bottom: 20px;
  color: #73d9e4;
  font-size: 12px;
  text-decoration: none;
  font-weight: 700;
}

.featured a {
  color: #11264b;
}

.price-card a span {
  margin-left: 12px;
}

/* ==========================================================================
   11. FAQ
   ========================================================================== */

.faq {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 75px;
}

.faq h2 {
  font-size: 42px;
  color: #11153f;
}

.faq-list details {
  border-top: 1px solid #d9e4e6;
  padding: 19px 0;
}

.faq-list details:last-child {
  border-bottom: 1px solid #d9e4e6;
}

.faq-list summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 15px;
  color: #11153f;
}

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

.faq-list summary span {
  color: #18a0b4;
  font-size: 23px;
  font-weight: 400;
  line-height: 1.1;
  transition: transform 0.2s;
}

.faq-list details[open] summary span {
  transform: rotate(45deg);
}

.faq-list details p {
  font-size: 12px;
  line-height: 1.9;
  color: #536273;
  max-width: 650px;
  margin: 14px 0 2px;
}

/* ==========================================================================
   12. お問い合わせフォーム
   ========================================================================== */

.contact {
  background: #e2f6f7;
}

.contact-inner {
  padding-top: 108px;
  padding-bottom: 105px;
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 90px;
}

.contact h2 {
  font-size: 49px;
  margin-bottom: 14px;
  color: #11153f;
}

.contact h2 em {
  font-style: normal;
  color: #159bb0;
}

.contact > div > div > p:last-child {
  max-width: 400px;
  color: #4a6170;
  font-size: 13px;
}

.contact-form {
  background: #fcfbf6;
  padding: 25px 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 15px;
  align-content: start;
  box-shadow: 0 18px 44px #10163f16;
}

.contact-form label {
  display: grid;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: #486459;
}

.contact-form label:nth-of-type(3),
.contact-form label:nth-of-type(4),
.contact-form button,
.form-note,
.form-success {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form select {
  background: #f6fafb;
  border: 1px solid #d6e4e6;
  border-radius: 2px;
  padding: 10px 11px;
  color: var(--ink);
  font: 13px var(--display);
  outline-color: #4ba87d;
}

.contact-form button {
  margin-top: 3px;
  width: 100%;
}

.form-note {
  font-size: 9px !important;
  color: #61727b !important;
  line-height: 1.4 !important;
  margin: 0 !important;
  text-align: center;
}

.form-note a {
  color: #176f82;
}

.form-success {
  display: none;
  margin: 0;
  color: #176d52;
  font-size: 12px;
  text-align: center;
}

.form-success.show {
  display: block;
}

/* ==========================================================================
   13. フッター
   ========================================================================== */

footer {
  background: #0d1232;
  color: #b4c6bc;
}

.footer-inner {
  max-width: 1280px;
  margin: auto;
  padding: 31px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-inner .brand {
  color: #fff;
  font-size: 15px;
}

.footer-inner .brand-mark {
  width: 26px;
  height: 26px;
  background: #47c4d0;
  color: #0d1232;
  font-size: 16px;
}

.footer-inner .brand-owner {
  color: #8fa4ae;
  font-size: 8px;
}

.footer-inner .brand-dot {
  color: #d7ee87;
}

.footer-inner p {
  font: 10px var(--mono);
  color: #8998ac;
}

.footer-inner > div {
  display: flex;
  gap: 17px;
}

.footer-inner a {
  color: #bdccd8;
  font-size: 10px;
}

.footer-inner a:hover {
  color: #fff;
}

/* ==========================================================================
   14. アニメーション
   ========================================================================== */

/* スクロールフェードイン */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal.delay-1 {
  transition-delay: 0.12s;
}

.reveal.delay-2 {
  transition-delay: 0.24s;
}

.reveal.delay-3 {
  transition-delay: 0.36s;
}

/* ==========================================================================
   15. アクセシビリティ
   ========================================================================== */

/* スキップリンク */
.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 20;
  background: var(--pine);
  color: white;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 3px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 12px;
}

/* スクリーンリーダー専用 */
.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;
}

/* ハニーポット (スパム対策) */
.honeypot {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

/* 無効化ボタン */
.button:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

/* フォーカス表示 */
:focus-visible {
  outline: 3px solid #4ba87d;
  outline-offset: 3px;
}

/* 動きの軽減設定 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button {
    transition: none;
  }
}

/* ==========================================================================
   16. レスポンシブデザイン
   ========================================================================== */

/* タブレット・小型デスクトップ */
@media (max-width: 800px) {
  .site-header {
    height: 76px;
    padding: 0 22px;
  }

  .site-header nav {
    display: none;
  }

  .site-header > .header-cta {
    display: none;
  }

  .brand {
    font-size: 17px;
  }

  .header-cta {
    font-size: 12px;
    padding: 9px 14px;
  }

  .section-wrap {
    padding-left: max(22px, env(safe-area-inset-left));
    padding-right: max(22px, env(safe-area-inset-right));
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 35px;
    padding-top: 37px;
    padding-bottom: 58px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .hero-art.hero-photo {
    height: 330px;
    border-radius: 165px 0 0 165px;
    margin: 0 -22px 0 0;
    transform: none;
  }

  .trust-row {
    gap: 8px;
  }

  .trust-row > div {
    padding: 8px;
  }

  .trust-row span {
    font-size: 9px;
  }

  .problem-grid {
    padding-top: 45px;
    padding-bottom: 43px;
  }

  .section-pad {
    padding-top: 78px;
    padding-bottom: 78px;
  }

  .section-heading,
  .pricing-heading {
    display: block;
  }

  .section-heading h2 {
    font-size: 39px;
  }

  .service-grid,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 290px;
  }

  .case-header {
    display: block;
  }

  .case-header h2 {
    font-size: 35px;
  }

  .case-header > p {
    margin-top: 16px;
  }

  .case-panel {
    grid-template-columns: 1fr;
  }

  .case-visual {
    height: 260px;
  }

  .case-content {
    padding: 29px 24px;
  }

  .case-content h3 {
    font-size: 27px;
  }

  .case-result {
    gap: 18px;
  }

  .process,
  .faq,
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .process h2,
  .faq h2 {
    font-size: 36px;
  }

  .timeline li {
    grid-template-columns: 36px 1fr;
  }

  .timeline li > b {
    grid-column: 2;
  }

  .contact-inner {
    padding-top: 75px;
    padding-bottom: 75px;
  }

  .contact h2 {
    font-size: 40px;
  }

  .readiness-box {
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 35px 25px;
  }

  .readiness-intro h2 {
    font-size: 29px;
  }

  .readiness-form label {
    display: flex;
    margin: 5px 0;
  }

  .readiness-form .button {
    width: 100%;
  }

  .guide-card {
    padding: 31px 25px;
    display: block;
  }

  .guide-card .button {
    margin-top: 15px;
  }

  .footer-inner {
    padding: 26px 22px;
    display: block;
  }

  .footer-inner p {
    margin: 12px 0;
  }

  .footer-inner > div {
    display: none;
  }

  /* モバイルナビゲーション */
  .mobile-nav {
    display: block;
    position: relative;
  }

  .mobile-nav summary {
    list-style: none;
    min-width: 44px;
    min-height: 44px;
    display: grid;
    place-items: center;
    padding: 0 13px;
    border: 1px solid #cbdde1;
    border-radius: 999px;
    color: var(--ink);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav[open] summary {
    background: #11153f;
    color: #fff;
  }

  .mobile-nav nav {
    position: absolute;
    display: grid;
    right: 0;
    top: 52px;
    width: min(280px, calc(100vw - 44px));
    gap: 0;
    padding: 10px;
    background: #fff;
    border: 1px solid #d7e4e6;
    box-shadow: 0 18px 45px #11153f24;
    border-radius: 12px;
  }

  .mobile-nav nav a {
    display: flex;
    align-items: center;
    min-height: 46px;
    padding: 4px 12px;
    border-bottom: 1px solid #e7eff0;
    font-size: 14px;
  }

  .mobile-nav nav .mobile-nav-cta {
    justify-content: center;
    margin-top: 8px;
    border: 0;
    border-radius: 999px;
    background: #36b9d0;
    color: #fff;
  }

  /* フォーム要素のタッチターゲット */
  .contact-form input,
  .contact-form select {
    min-height: 48px;
    font-size: 16px;
  }

  .readiness-form label {
    min-height: 44px;
    padding: 5px 0;
  }

  .readiness-form input {
    width: 20px;
    height: 20px;
  }

  .case-tabs {
    gap: 8px;
    justify-content: space-between;
  }

  .case-tabs button {
    flex: 1;
    padding-left: 4px;
    padding-right: 4px;
  }

  .faq-list summary {
    min-height: 44px;
    align-items: center;
  }

  .footer-inner {
    padding-bottom: max(26px, env(safe-area-inset-bottom));
  }
}

/* モバイル (小型) */
@media (max-width: 430px) {
  .brand {
    font-size: 16px;
  }

  .brand-owner {
    font-size: 8px;
  }

  .hero h1 {
    font-size: clamp(35px, 11vw, 43px);
  }

  .hero-text {
    font-size: 14px;
  }

  .hero-actions {
    gap: 15px;
    align-items: flex-start;
    flex-direction: column;
  }

  .trust-row {
    margin-top: 31px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .trust-row span {
    font-size: 9px;
  }

  .case-result {
    display: block;
  }

  .case-result blockquote {
    margin-top: 14px;
  }

  .case-tabs button {
    font-size: 12px;
  }

  .contact h2 {
    font-size: clamp(35px, 10vw, 40px);
  }

  .contact-form {
    padding: 21px;
    grid-template-columns: 1fr;
  }

  .contact-form label:nth-of-type(2) {
    grid-column: 1;
  }

  .pricing-heading h2 {
    font-size: 39px;
  }
}

/* ==========================================================================
   ガイドページ・リーガルページ
   ========================================================================== */

.article-page {
  max-width: 880px;
  padding-top: 85px;
  padding-bottom: 115px;
}

.article-page h1,
.legal-page h1 {
  font-size: clamp(38px, 5.2vw, 58px);
  line-height: 1.35;
  letter-spacing: -0.07em;
  margin: 16px 0;
}

.article-page h1 em {
  color: #1d9fb3;
  font-style: normal;
}

.article-lead {
  font-size: 16px;
  color: var(--muted);
  max-width: 710px;
  line-height: 2;
}

.article-toc {
  background: #e5f4f6;
  padding: 25px 30px;
  margin: 42px 0 68px;
}

.article-toc strong {
  font-size: 14px;
}

.article-toc ol {
  margin: 10px 0 0;
  padding-left: 22px;
  font-size: 13px;
  color: #496158;
  line-height: 2;
}

.article-content {
  max-width: 760px;
}

.article-content section {
  border-top: 1px solid var(--line);
  padding: 39px 0;
}

.article-content section:last-child {
  border-bottom: 1px solid var(--line);
}

.step-label {
  font: 500 11px var(--mono);
  letter-spacing: 0.08em;
  color: #27815f;
  margin: 0;
}

.article-content h2 {
  font-size: 28px;
  letter-spacing: -0.05em;
  margin: 9px 0 12px;
}

.article-content p {
  color: #52635d;
  line-height: 2;
  font-size: 14px;
}

.article-content aside {
  background: #e8f6f7;
  border-left: 3px solid #47bfce;
  padding: 14px 16px;
  color: #506459;
  font-size: 12px;
}

.article-cta {
  background: #11153f;
  padding: 42px 47px;
  margin-top: 72px;
  color: white;
}

.article-cta h2 {
  font-size: 29px;
  letter-spacing: -0.05em;
  margin: 12px 0 4px;
}

.article-cta > p:not(.eyebrow) {
  color: #c4d4cb;
  font-size: 13px;
}

.legal-page {
  max-width: 880px;
  padding-top: 75px;
  padding-bottom: 115px;
}

.legal-page h1 {
  margin-bottom: 37px;
}

.legal-page h2 {
  font-size: 19px;
  margin-top: 38px;
  letter-spacing: -0.04em;
}

.legal-page p {
  color: #596962;
  font-size: 14px;
}

.legal-page a {
  color: #18899d;
}

.legal-date {
  margin-top: 55px;
  color: #84918b !important;
  font-size: 12px !important;
}

/* ガイドプロモーション */
.guide-promo {
  padding-top: 0;
}

.guide-card {
  background: #e2f5f7;
  border-left: 8px solid #46c4d1;
  min-height: 270px;
  padding: 43px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.guide-card h2 {
  font-size: 30px;
  line-height: 1.5;
  letter-spacing: -0.06em;
  margin: 12px 0 4px;
  color: #11153f;
}

.guide-card p:last-child {
  max-width: 550px;
  font-size: 12px;
  line-height: 1.9;
  color: #516074;
}

@media (max-width: 800px) {
  .article-page,
  .legal-page {
    padding-top: 50px;
    padding-bottom: 75px;
  }

  .article-toc {
    margin-bottom: 45px;
  }

  .article-cta {
    padding: 30px 24px;
  }

  .article-content h2 {
    font-size: 24px;
  }
}