/* ===== Variables ===== */
:root {
  --color-bg: #FFFFFF;
  --color-bg-soft: #FAF8F5;
  --color-text: #1A1A1A;
  --color-text-muted: #6E6E6E;
  --color-accent: #F2A233;
  --color-border: #E5E3DF;
  --radius: 16px;
  --radius-pill: 980px;
  --container-width: 980px;
  --header-height: 64px;
}

/* ===== Reset ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

/* ===== Base ===== */
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.015em;
}

.pc-only { display: none; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.section-title {
  font-size: clamp(1.65rem, 4vw, 2.5rem);
  text-align: center;
  margin-bottom: 1.25rem;
}

.section-lead {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

/* ===== Skip link ===== */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 200;
  background: var(--color-text);
  color: #FFFFFF;
  padding: 0.6rem 1.2rem;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
  top: 0;
}

/* ===== Focus visible ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: var(--header-height);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.logo-img {
  height: clamp(44px, 7vw, 56px);
  width: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* ===== Global nav ===== */
.menu-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  min-width: 48px;
  min-height: 48px;
  padding: 0.35rem 0.5rem;
  border-radius: 10px;
}

.menu-toggle-bar,
.menu-toggle-bar::before,
.menu-toggle-bar::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

.menu-toggle-bar {
  position: relative;
}

.menu-toggle-bar::before,
.menu-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-toggle-bar::before { top: -7px; }
.menu-toggle-bar::after { top: 7px; }

.menu-toggle[aria-expanded="true"] .menu-toggle-bar {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-bar::after {
  top: 0;
  transform: rotate(-45deg);
}

.menu-toggle-label {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1;
}

.global-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
}

/* JS有効時のみモバイルで折りたたむ（JS無効時は常に表示） */
.js .global-nav[hidden] {
  display: none;
}

.nav-list {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1.25rem 1.25rem;
}

.nav-link {
  display: block;
  padding: 0.85rem 0.5rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-list li:last-child .nav-link {
  border-bottom: none;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  border: 2px solid transparent;
  white-space: nowrap;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background: var(--color-accent);
  color: #1A1A1A;
  box-shadow: 0 4px 16px rgba(242, 162, 51, 0.35);
}

.btn-large {
  padding: 1.1rem 2.75rem;
  font-size: 1.0625rem;
}

.btn-small {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color 0.2s ease;
}

.link-arrow::after {
  content: "›";
  margin-left: 0.4em;
  font-size: 1.15em;
  line-height: 1;
}

.link-arrow:hover {
  color: var(--color-text);
}

/* ===== Hero ===== */
.hero {
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  text-align: center;
}

.eyebrow {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: clamp(1.9rem, 5.5vw, 3.25rem);
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}

.hero-lead {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 2.25rem;
}

/* ===== Pains ===== */
.pains {
  background: var(--color-bg-soft);
}

.pain-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pain-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.6rem 1.75rem;
}

.pain-text {
  font-weight: 500;
}

.pains-note {
  text-align: center;
  color: var(--color-text-muted);
  margin-top: 2.25rem;
}

/* ===== Services ===== */
.service-grid {
  display: grid;
  gap: 1.25rem;
}

.service-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.9rem 2rem;
}

.service-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-text {
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* ===== About ===== */
.about {
  background: var(--color-bg-soft);
  text-align: center;
}

.about .section-title {
  margin-bottom: 2rem;
}

.about-eyebrow {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}

.about-body {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* ===== Reasons ===== */
.reason-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.reason-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.9rem 2rem;
}

.reason-number {
  display: block;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.9375rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.reason-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.reason-text {
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* ===== Flow ===== */
.flow {
  background: var(--color-bg-soft);
}

.flow-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 640px;
  margin: 0 auto;
}

.flow-item {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem 1.5rem 4.5rem;
}

.flow-number {
  position: absolute;
  left: 1.5rem;
  top: 1.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #1A1A1A;
  font-weight: 600;
}

.flow-step {
  display: block;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.flow-title {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.flow-text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px;
  margin: clamp(2rem, 4vw, 3rem) auto 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  overflow: hidden;
}

.faq-question {
  position: relative;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  padding: 1.25rem 3.25rem 1.25rem 1.5rem;
  transition: color 0.2s ease;
}

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

.faq-question::after {
  content: "＋";
  position: absolute;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-accent);
  font-weight: 600;
}

.faq-item[open] .faq-question::after {
  content: "－";
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-answer {
  padding: 0 1.5rem 1.4rem;
  color: var(--color-text-muted);
}

/* ===== Contact form ===== */
.contact .section-title {
  margin-bottom: 1rem;
}

.contact .section-lead {
  margin-bottom: clamp(1.9rem, 3.75vw, 2.6rem);
}

.contact .flow-note {
  margin-top: calc(clamp(1.9rem, 3.75vw, 2.6rem) * -0.4);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 560px;
  margin: 0 auto;
}

.hidden-field {
  position: absolute;
  left: -9999px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
}

.required {
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

.optional {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

.form-group input,
.form-group textarea {
  font: inherit;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
}

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

.form-group-consent {
  align-items: center;
}

.consent-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  font-weight: 500;
}

.consent-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  accent-color: var(--color-accent);
}

.consent-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-submit {
  width: 100%;
  border: none;
  margin-top: 0.5rem;
}

/* ===== Privacy ===== */
.privacy-body {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.policy-item {
  padding: 0;
}

.policy-item h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.policy-item p {
  color: var(--color-text-muted);
}

.policy-item ul {
  list-style: disc;
  padding-left: 1.4em;
  color: var(--color-text-muted);
}

.policy-item a {
  color: var(--color-accent);
}

.policy-item a:hover {
  text-decoration: underline;
}

.policy-date {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: right;
}

.back-home {
  text-align: center;
  margin-top: 3rem;
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo {
  height: 32px;
  width: auto;
}

.footer-tagline {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* 文節単位で折り返す */
.footer-tagline span {
  display: inline-block;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav-list .footer-link {
  white-space: nowrap;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-link {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--color-text);
}

.footer-copy {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

/* ===== Desktop ===== */
@media (min-width: 900px) {
  .pc-only { display: inline; }
  .sp-only { display: none; }

  .menu-toggle {
    display: none;
  }

  .global-nav,
  .js .global-nav[hidden] {
    display: block;
    position: static;
    background: none;
    border-bottom: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
  }

  .nav-link {
    padding: 0.5rem 0.85rem;
    font-size: 0.9375rem;
    border-bottom: none;
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
    gap: 1.5rem;
  }

  .pain-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .pain-item {
    flex: 1 1 calc(50% - 0.7rem);
  }

  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 1fr;
  }

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

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    text-align: left;
  }

  .footer-brand {
    align-items: flex-start;
  }

  .footer-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.5rem;
  }

  .footer-meta {
    align-items: flex-end;
    text-align: right;
  }
}

/* タブレット幅（縦向き）ではナビは折りたたみのまま、グリッドだけ2列に */
@media (min-width: 600px) and (max-width: 899px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 1fr;
  }

  .pain-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .pain-item {
    flex: 1 1 calc(50% - 0.7rem);
  }
}