/* ========================================
   宇都宮腰痛院 — Utsunomiya Lower Back Clinic
   Design: Wellness Clinic / Sage & Warm White
   ======================================== */

:root {
  --white:   #ffffff;
  --offwhite:#fafaf8;
  --sage-lt: #f0f5f2;
  --sage:    #3d6b5e;
  --sage-dk: #2a4d43;
  --beige:   #e8e0d4;
  --sand:    #d4c8b8;
  --warm:    #8c7a6a;
  --text:    #2a2a2a;
  --text-lt: #6a6a6a;
  --accent:  #b8956a;

  --font-jp: 'Noto Sans JP', 'Yu Gothic', '游ゴシック', sans-serif;
  --font-en: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;

  --tr: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --max-w: 1100px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 17px; }
body {
  font-family: var(--font-jp);
  background: var(--offwhite);
  color: var(--text);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
img { display: block; width: 100%; object-fit: cover; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 14px;
}
.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--sage);
}
.section-title {
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--text);
}
.section-title strong { font-weight: 700; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 36px;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  font-family: var(--font-jp);
  transition: var(--tr);
  border: none;
}
.btn-sage {
  background: var(--sage);
  color: var(--white);
}
.btn-sage:hover { background: var(--sage-dk); }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--sage);
  color: var(--sage);
}
.btn-outline:hover { background: var(--sage); color: var(--white); }
.btn-white {
  background: var(--white);
  color: var(--sage);
}
.btn-white:hover { background: var(--sage-lt); }

/* ── Header ── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  transition: background var(--tr), padding var(--tr), box-shadow var(--tr);
}
#header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  padding: 14px 40px;
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}
.logo-wrap { display: flex; flex-direction: column; gap: 2px; }
.logo-en {
  font-family: var(--font-en);
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--white);
  transition: color var(--tr);
  font-style: italic;
}
#header.scrolled .logo-en { color: var(--sage); }
.logo-ja {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.7);
  transition: color var(--tr);
}
#header.scrolled .logo-ja { color: var(--text-lt); }
.header-nav { display: flex; align-items: center; gap: 32px; }
.header-nav a {
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.85);
  transition: color var(--tr);
}
#header.scrolled .header-nav a { color: var(--text-lt); }
.header-nav a:hover { color: var(--white); }
#header.scrolled .header-nav a:hover { color: var(--sage); }
.header-cta-wrap { display: flex; align-items: center; gap: 12px; }
.header-tel {
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--white);
  transition: color var(--tr);
  font-weight: 500;
}
#header.scrolled .header-tel { color: var(--sage); }
.header-line {
  padding: 8px 18px;
  background: #06c755;
  color: var(--white);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: opacity var(--tr);
}
.header-line:hover { opacity: 0.85; }
.header-line::before { content: '📱'; font-size: 0.85rem; }

/* ── Hero ── */
#hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #2a4d43 0%, #3d6b5e 40%, #4a7a6c 70%, #5a8a7c 100%);
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.03) 0%, transparent 40%);
}
.hero-bg-pattern::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 45%;
  background: linear-gradient(to left, rgba(255,255,255,0.06), transparent);
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 120px 0 80px;
}
.hero-text { color: var(--white); }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 6px 18px;
  font-size: 0.88rem;
  letter-spacing: 0.2em;
  margin-bottom: 28px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 200;
  line-height: 1.35;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.hero-title strong {
  font-weight: 800;
  display: block;
  font-size: 1.1em;
}
.hero-title .hero-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.5em;
  font-weight: 300;
  letter-spacing: 0.15em;
  display: block;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
}
.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.75);
  line-height: 2.1;
  margin-bottom: 40px;
  max-width: 420px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.hero-stat {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 28px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  color: var(--white);
}
.stat-num {
  font-family: var(--font-en);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 300;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-unit { font-size: 0.9rem; }
.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ── Symptoms ── */
#symptoms {
  padding: 100px 0;
  background: var(--sage-lt);
}
.symptoms-header { text-align: center; margin-bottom: 56px; }
.symptoms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--sand);
  max-width: 800px;
  margin: 0 auto 48px;
}
.symptom-item {
  background: var(--white);
  padding: 28px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: background var(--tr);
  cursor: default;
}
.symptom-item:hover { background: var(--sage-lt); }
.symptom-icon { font-size: 1.4rem; flex-shrink: 0; }
.symptom-name { font-size: 1rem; font-weight: 700; letter-spacing: 0.04em; }
.symptom-desc { font-size: 0.85rem; color: var(--text-lt); margin-top: 3px; }
.symptoms-note {
  text-align: center;
  font-size: 0.97rem;
  color: var(--text-lt);
  padding: 20px;
  border: 1px dashed var(--sand);
  max-width: 600px;
  margin: 0 auto;
}

/* ── Philosophy ── */
#philosophy {
  padding: 100px 0;
  background: var(--white);
}
.philosophy-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.philosophy-img-wrap {
  position: relative;
}
.philosophy-img {
  width: 100%;
  padding-top: 120%;
  background: linear-gradient(160deg, #c8d8d0 0%, #a8c0b5 50%, #88a898 100%);
  position: relative;
}
.philosophy-img::after {
  content: '院長\A澁井 優香';
  white-space: pre;
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(42,77,67,0.9));
  color: var(--white);
  padding: 40px 24px 24px;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-align: center;
}
.philosophy-tag {
  position: absolute;
  top: 24px;
  left: -16px;
  background: var(--sage);
  color: var(--white);
  padding: 10px 20px;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
}
.philosophy-text {}
.philosophy-title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 28px;
  letter-spacing: 0.04em;
}
.philosophy-title em {
  font-style: normal;
  color: var(--sage);
  font-weight: 700;
}
.philosophy-body {
  font-size: 1rem;
  color: var(--text-lt);
  line-height: 2.2;
  margin-bottom: 32px;
}
.philosophy-sign {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--sage);
  letter-spacing: 0.05em;
}

/* ── Reasons ── */
#reasons {
  padding: 100px 0;
  background: var(--sage);
}
.reasons-header { margin-bottom: 64px; }
.reasons-header .section-label { color: rgba(255,255,255,0.6); }
.reasons-header .section-label::before { background: rgba(255,255,255,0.4); }
.reasons-header .section-title { color: var(--white); }
.reasons-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.reason-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 36px 32px;
  display: flex;
  gap: 24px;
}
.reason-num {
  font-family: var(--font-en);
  font-size: 3.5rem;
  font-weight: 300;
  color: rgba(255,255,255,0.2);
  line-height: 1;
  flex-shrink: 0;
  width: 56px;
}
.reason-body {}
.reason-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.reason-title span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.5);
  font-weight: 300;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.reason-text {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.65);
  line-height: 2;
}

/* ── Flow ── */
#flow {
  padding: 100px 0;
  background: var(--offwhite);
}
.flow-header { text-align: center; margin-bottom: 64px; }
.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--beige);
  position: relative;
}
.flow-step {
  background: var(--white);
  padding: 40px 28px 32px;
  text-align: center;
}
.flow-num {
  width: 48px;
  height: 48px;
  background: var(--sage);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: var(--font-en);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}
.flow-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.flow-desc {
  font-size: 0.9rem;
  color: var(--text-lt);
  line-height: 1.9;
}
.flow-free {
  margin-top: 8px;
  display: inline-block;
  background: var(--sage-lt);
  color: var(--sage);
  font-size: 0.65rem;
  padding: 3px 10px;
  letter-spacing: 0.1em;
}

/* ── Voice ── */
#voice {
  padding: 100px 0;
  background: var(--sage-lt);
}
.voice-header { margin-bottom: 56px; }
.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.voice-card {
  background: var(--white);
  padding: 32px 28px;
  border-top: 3px solid var(--sage);
}
.voice-rating {
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  margin-bottom: 14px;
}
.voice-symptom {
  display: inline-block;
  font-size: 0.65rem;
  background: var(--sage-lt);
  color: var(--sage);
  padding: 3px 10px;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}
.voice-text {
  font-size: 0.95rem;
  color: var(--text-lt);
  line-height: 2.1;
  margin-bottom: 20px;
}
.voice-author {
  font-size: 0.85rem;
  color: var(--warm);
  letter-spacing: 0.08em;
  padding-top: 16px;
  border-top: 1px solid var(--beige);
}

/* ── Access ── */
#access {
  padding: 100px 0;
  background: var(--white);
}
.access-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.access-info { display: flex; flex-direction: column; gap: 24px; }
.access-item {}
.access-item dt {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--sage);
  text-transform: uppercase;
  margin-bottom: 6px;
  font-family: var(--font-en);
}
.access-item dd {
  font-size: 1rem;
  color: var(--text);
  line-height: 1.8;
}
.access-tel {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 300;
  color: var(--sage);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.access-hours {
  margin-top: 24px;
  background: var(--sage-lt);
  padding: 20px 24px;
}
.access-hours table { width: 100%; border-collapse: collapse; }
.access-hours td {
  padding: 6px 0;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--beige);
}
.access-hours td:first-child { color: var(--text-lt); width: 40%; }
.map-wrap {
  background: var(--beige);
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--warm);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  position: relative;
  overflow: hidden;
}
.map-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #d4c8b8 0%, #c8bca8 100%);
}
.map-placeholder {
  position: relative;
  z-index: 1;
  text-align: center;
}
.map-placeholder::before { content: '📍'; font-size: 2rem; display: block; margin-bottom: 8px; }

/* ── CTA ── */
#cta {
  padding: 100px 0;
  background: var(--sage-dk);
  text-align: center;
  position: relative;
  overflow: hidden;
}
#cta::before {
  content: 'CLINIC';
  font-family: var(--font-en);
  font-size: 20vw;
  font-weight: 700;
  font-style: italic;
  color: rgba(255,255,255,0.03);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  white-space: nowrap;
  pointer-events: none;
}
.cta-label { margin-bottom: 12px; }
.cta-label .section-label { color: rgba(255,255,255,0.5); }
.cta-label .section-label::before { background: rgba(255,255,255,0.3); }
.cta-title {
  font-size: clamp(1.6rem, 3.5vw, 2.8rem);
  font-weight: 200;
  color: var(--white);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.cta-title strong { font-weight: 800; }
.cta-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 56px;
  line-height: 2;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.btn-line {
  background: #06c755;
  color: var(--white);
  padding: 16px 36px;
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: opacity var(--tr);
}
.btn-line:hover { opacity: 0.85; }
.btn-line::before { content: '📱'; }
.cta-tel-wrap {
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.cta-tel-label { font-size: 0.85rem; color: rgba(255,255,255,0.45); letter-spacing: 0.2em; margin-bottom: 10px; }
.cta-tel-num {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--white);
  letter-spacing: 0.06em;
}
.cta-tel-num::before { content: '📞 '; font-size: 0.6em; }
.cta-hours-note {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  margin-top: 8px;
  letter-spacing: 0.1em;
}

/* ── Footer ── */
footer {
  background: #1a2e28;
  padding: 48px 0 28px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 36px;
  gap: 40px;
}
.footer-brand .logo-en { color: rgba(255,255,255,0.7); font-size: 1.2rem; display: block; margin-bottom: 4px; }
.footer-brand .logo-ja { color: rgba(255,255,255,0.35); font-size: 0.62rem; display: block; letter-spacing: 0.2em; }
.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.1em;
  transition: color var(--tr);
}
.footer-nav a:hover { color: rgba(255,255,255,0.7); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  text-align: center;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.1em;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  #header { padding: 16px 20px; }
  #header.scrolled { padding: 12px 20px; }
  .header-nav { display: none; }

  .hero-inner { grid-template-columns: 1fr; padding: 100px 0 60px; gap: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }

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

  .philosophy-inner { grid-template-columns: 1fr; gap: 40px; }
  .philosophy-tag { left: 0; }

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

  .flow-steps { grid-template-columns: 1fr 1fr; }

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

  .access-inner { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; gap: 24px; }
  .footer-nav { gap: 16px; }
}