/* ============================================
   All-on-4 専用サイト - 新港イトセ歯科
   Design: Clean, Cool, Sophisticated
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #1a2a3a;
  --color-primary-light: #2c3e50;
  --color-accent: #b8860b;
  --color-accent-light: #d4a537;
  --color-accent-bg: #f9f6f0;
  --color-white: #ffffff;
  --color-bg: #f5f5f5;
  --color-bg-dark: #0d1b2a;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #e0e0e0;
  --color-border-light: #eeeeee;

  --font-main: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-heading: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-english: "Cormorant Garamond", "Times New Roman", serif;

  --max-width: 1200px;
  --header-height: 104px;
  --section-padding: 100px;
  --transition: 0.3s ease;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-main);
  font-size: 1.6rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
}

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

/* In-text links inside paragraphs: restore the link affordance the reset removes */
.text-link {
  color: var(--color-primary);
  font-weight: 500;
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

ul, ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section-padding {
  padding: var(--section-padding) 0;
}

/* Top page only: tighter space above the CASES / COLUMN headings.
   PC 100px -> 40px; mobile gets its own value below (60px -> 45px). */
.cases.section-padding,
.column.section-padding {
  padding-top: calc(var(--section-padding) * 0.4);
}

@media (max-width: 768px) {
  .cases.section-padding,
  .column.section-padding {
    padding-top: 45px;
  }
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .en {
  display: block;
  font-family: var(--font-english);
  font-size: 1.4rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.section-header p {
  margin-top: 20px;
  color: var(--color-text-light);
  font-size: 1.6rem;
}

/* Gold gradient line under section headings (center solid, fading ends) */
.section-header h2::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin: 16px auto 0;
  background: linear-gradient(90deg, transparent, #b8860b, transparent);
}

/* TRUST section uses its own animated gold divider instead */
.trust .section-header h2::after {
  display: none;
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 30px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo a {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo .logo-img {
  height: 81px;
  width: auto;
  display: block;
}

@media (max-width: 1024px) {
  .header-logo .logo-img {
    height: 64px;
  }
}

@media (max-width: 768px) {
  .header-logo .logo-img {
    height: 60px;
  }
}

/* Navigation */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-menu a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  white-space: nowrap;
  color: var(--color-primary);
  letter-spacing: 0;
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* Navigation Dropdown */
.nav-item {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-toggle {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  white-space: nowrap;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-toggle::after {
  content: "\25BE";
  font-size: 1rem;
  color: var(--color-accent);
  transition: transform var(--transition);
}

.nav-item.open .nav-toggle::after {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 240px;
  background: var(--color-white);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 1100;
}

.nav-item.has-dropdown:hover .dropdown,
.nav-item.has-dropdown.open .dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.dropdown a {
  display: block;
  padding: 11px 26px;
  font-size: 1.3rem;
  white-space: nowrap;
  color: var(--color-primary);
}

.dropdown a::after {
  display: none;
}

.dropdown a:hover {
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 15px;
}

.header-tel {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.header-tel .tel-label {
  display: block;
  font-size: 1.0rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.btn-reserve {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-reserve:hover {
  background: var(--color-accent);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 10px;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* --- Hero --- */
.hero {
  position: relative;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.12em;
  text-align: center;
}

/* Hero image container */
.hero-image {
  width: 100%;
  line-height: 0;
}

.hero-image img {
  width: 100%;
  height: auto;
}

/* PC/SP image switching */
.hero-image .hero-img-pc {
  display: block;
}

.hero-image .hero-img-sp {
  display: none;
}

/* Buttons at the bottom of hero */
.hero-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 28px 20px;
  background: var(--color-bg-dark);
}

.hero-buttons-inner {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 40px;
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-dark:hover {
  border-color: var(--color-accent-light);
  color: var(--color-accent-light);
  transform: translateY(-2px);
}

/* --- Trust Section --- */
.trust {
  background: #004545;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.trust .section-header .en {
  color: var(--color-accent);
}

.trust .section-header h2 {
  color: var(--color-white);
}

.trust .section-header p {
  color: rgba(255, 255, 255, 0.6);
}

/* Implant-count stat emphasized inside the TRUST section lead */
.trust-lead-stat {
  display: inline-block;
  color: rgba(255, 255, 255, 0.85);
}

/* Gold line under the stat, sweeping in from the left and out to the right */
.trust-lead-stat::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 10px;
  background: linear-gradient(90deg, transparent, #d4a537, transparent);
  transform: scaleX(0);
  transform-origin: left;
  animation: trust-draw-lr 3s ease-in-out infinite;
}

@keyframes trust-draw-lr {
  0%   { transform: scaleX(0); transform-origin: left; }
  45%  { transform: scaleX(1); transform-origin: left; }
  55%  { transform: scaleX(1); transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}

@media (prefers-reduced-motion: reduce) {
  .trust-lead-stat::after {
    animation: none;
    transform: scaleX(1);
  }
}

.trust-lead-num {
  display: block;
  font-family: var(--font-main);
  font-size: 3.5em;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--color-accent-light);
  margin-top: 4px;
}

.trust-lead-num .unit {
  font-family: var(--font-main);
  font-size: 0.42em;
  font-weight: 600;
  margin-left: 2px;
}

.trust-lead-sub {
  display: block;
  margin-top: 6px;
}

@media (max-width: 768px) {
  .trust-lead-num {
    font-size: 2.75em;
  }
}

.trust-message {
  max-width: 860px;
  margin: 0 auto 60px;
  text-align: center;
}

.trust-message p {
  font-size: 1.6rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.03em;
}

.trust-brands {
  text-align: center;
  padding: 35px 40px;
  background: rgba(184, 134, 11, 0.08);
  border: 1px solid rgba(184, 134, 11, 0.2);
  border-radius: 8px;
}

.trust-brands-label {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 15px;
  letter-spacing: 0.1em;
}

.trust-brands-text {
  font-size: 1.5rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.8);
}

.pc-only {
  display: inline;
}

/* --- About Section --- */
.about {
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-image::after {
  content: "";
  position: absolute;
  bottom: -10px;
  right: -10px;
  width: 100%;
  height: 100%;
  border: 1px solid var(--color-accent);
  z-index: -1;
}

.about-text h3 {
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 30px;
  line-height: 1.6;
}

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 2;
}

/* --- Features Section --- */
.features {
  background: var(--color-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--color-white);
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

/* Related specialty-site cards (infomation.html) */
.related-sites-header {
  text-align: center;
  margin: 70px 0 35px;
}

.related-sites-header h3 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.related-sites-header p {
  font-size: 1.4rem;
  color: var(--color-text-light);
}

.related-sites {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.related-site-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
}

.related-site-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.related-site-thumb img {
  width: 100%;
  height: auto;
  display: block;
}

.related-site-body {
  padding: 16px 16px 20px;
}

.related-site-body h4 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.related-site-body p {
  font-size: 1.3rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .related-sites {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .related-sites {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .related-site-body {
    padding: 12px 14px 16px;
  }

  .related-site-body h4 {
    font-size: 1.3rem;
  }

  .related-site-body p {
    font-size: 1.2rem;
  }

  .related-sites-header {
    margin: 50px 0 25px;
  }
}

/* Private treatment room cards (feature.html) */
.room-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.room-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.room-card img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.room-card h3 {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 18px 20px 8px;
}

.room-card p {
  font-size: 1.35rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin: 0 20px 20px;
}

.room-note {
  max-width: 800px;
  margin: 40px auto 0;
  font-size: 1.5rem;
  line-height: 2;
  color: var(--color-text);
  text-align: center;
}

@media (max-width: 768px) {
  .room-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .room-note {
    text-align: left;
  }
}

/* Doctor credentials panel (feature.html) — shown in place of a portrait photo */
.doctor-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  padding: 40px 30px;
  background: var(--color-primary);
  border-radius: 12px;
  text-align: center;
  color: var(--color-white);
}

.doctor-panel-role {
  font-size: 1.6rem;
  color: var(--color-accent-light);
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}

.doctor-panel-name {
  font-family: var(--font-heading);
  font-size: 3.6rem;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.doctor-panel-divider {
  width: 60px;
  height: 1px;
  background: var(--color-accent);
  margin-bottom: 22px;
}

.doctor-panel-stat-label {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 4px;
}

.doctor-panel-stat {
  color: var(--color-accent-light);
  line-height: 1.1;
  margin-bottom: 8px;
}

.doctor-panel-stat strong {
  font-size: 4.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.doctor-panel-stat span {
  font-size: 1.8rem;
  font-weight: 600;
  margin-left: 4px;
}

.doctor-panel-note {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.doctor-panel-society {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.05em;
}

.doctor-career {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-light);
  list-style: none;
}

.doctor-career li {
  position: relative;
  padding-left: 16px;
  font-size: 1.3rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.doctor-career li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

@media (max-width: 768px) {
  .doctor-panel {
    min-height: 0;
    padding: 34px 24px;
  }

  .doctor-panel-name {
    font-size: 3rem;
  }

  .doctor-panel-stat strong {
    font-size: 3.8rem;
  }
}

/* Article supervisor box (column articles) */
.article-supervisor {
  max-width: 860px;
  margin: 40px auto 0;
  padding: 20px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
}

.article-supervisor-label {
  font-size: 1.2rem;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.article-supervisor-name {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.article-supervisor-profile {
  font-size: 1.3rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* Payment method cards (price.html): frame always visible, no hover motion */
.payment-methods .feature-card {
  border-color: var(--color-accent);
  padding: 30px 28px;
}

.payment-methods .feature-card:hover {
  transform: none;
  box-shadow: none;
}

/* Gold divider line under the TRUST heading */
.trust-divider {
  width: 100%;
  height: 1px;
  margin: 18px auto;
  border: none;
  background: linear-gradient(90deg, transparent, #d4a537, transparent);
  transform: scaleX(0);
  transform-origin: center;
  animation: trust-draw 3s ease-in-out infinite;
}

@keyframes trust-draw {
  0%   { transform: scaleX(0); }
  45%  { transform: scaleX(1); }
  70%  { transform: scaleX(1); }
  100% { transform: scaleX(0); }
}

@media (prefers-reduced-motion: reduce) {
  .trust-divider {
    animation: none;
    transform: scaleX(1);
  }
}

/* Feature cards inside the dark-green TRUST section: blend with background */
.trust .feature-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 14px;
}

.trust .feature-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--color-accent);
  box-shadow: none;
}

.trust .feature-card .feature-image {
  width: 100%;
  margin: 0;
}

.trust .feature-card .feature-image img {
  height: auto;
}

.trust .feature-card .feature-body {
  padding: 24px 24px 30px;
}

.trust .feature-card h3 {
  color: var(--color-accent-light);
  font-size: 1.9rem;
}

.trust .feature-card p {
  color: rgba(255, 255, 255, 0.8);
}

.feature-image {
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.feature-image img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.feature-card:hover .feature-image img {
  transform: scale(1.05);
}

.feature-body {
  padding: 30px 25px 35px;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 15px;
  letter-spacing: 0.05em;
}

.feature-card p {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- Equipment Grid (3+2 layout) --- */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.equipment-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.equipment-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
}

/* 下段の2つを中央寄せ */
.equipment-card:nth-child(4),
.equipment-card:nth-child(5) {
  grid-column: span 1;
}

.equipment-grid::after {
  content: "";
  grid-column: span 1;
  display: none;
}

/* 5項目: 上3+下2中央 → 6列グリッドで実現 */
@media (min-width: 769px) {
  .equipment-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  .equipment-card:nth-child(1),
  .equipment-card:nth-child(2),
  .equipment-card:nth-child(3) {
    grid-column: span 2;
  }
  .equipment-card:nth-child(4) {
    grid-column: 2 / span 2;
  }
  .equipment-card:nth-child(5) {
    grid-column: 4 / span 2;
  }
}

.equipment-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  line-height: 0;
  background: linear-gradient(135deg, #f0ece4 0%, #e8e2d8 100%);
}

.equipment-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.equipment-card:hover .equipment-image img {
  transform: scale(1.05);
}

.equipment-body {
  padding: 24px 22px 28px;
}

.equipment-body h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
  position: relative;
  padding-bottom: 12px;
}

.equipment-body h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 2px;
  background: var(--color-accent);
}

.equipment-body p {
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.85;
  text-align: left;
}

/* --- Section Lead Text --- */
.section-lead {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-top: 15px;
}

/* --- About Benefits (3-column) --- */
.about-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.benefit-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: var(--transition);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.benefit-image {
  width: 100%;
  overflow: hidden;
}

.benefit-image img {
  width: 100%;
  height: auto;
  display: block;
}

.benefit-body {
  padding: 28px 24px 30px;
  text-align: center;
}

.benefit-card h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 15px;
  letter-spacing: 0.05em;
}

.benefit-card p {
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.85;
  text-align: left;
}

/* --- About Steps (5 Treatment Steps) --- */
.about-steps {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.about-step-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-step-item.reverse {
  direction: rtl;
}

.about-step-item.reverse > * {
  direction: ltr;
}

.about-step-image {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.about-step-image img {
  width: 100%;
  height: auto;
  display: block;
}

.about-step-number {
  font-family: var(--font-english);
  font-size: 1.3rem;
  color: var(--color-accent);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-weight: 600;
}

.about-step-body h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 15px;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.about-step-body p {
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* --- Merit/Demerit List --- */
.merit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.merit-list li {
  padding: 14px 0;
  border-bottom: 1px solid #eee;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.merit-list li strong {
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 500;
}

.merit-list li strong::before {
  content: "✓ ";
  color: var(--color-accent);
  font-weight: 700;
}

.merit-list.demerit li strong::before {
  content: "△ ";
  color: var(--color-text-light);
}

.merit-list li span {
  font-size: 1.3rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding-left: 1.8em;
}

/* --- About Recommend (5 cards, 3+2 centered) --- */
.about-recommend {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.recommend-card {
  grid-column: span 2;
  background: var(--color-white);
  border-radius: 12px;
  padding: 30px 24px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-left: 3px solid var(--color-accent);
  transition: var(--transition);
}

.recommend-card:nth-child(4) {
  grid-column: 2 / span 2;
}

.recommend-card:nth-child(5) {
  grid-column: 4 / span 2;
}

.recommend-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.recommend-icon {
  font-size: 2.8rem;
  margin-bottom: 12px;
  line-height: 1;
}

.recommend-card h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.recommend-card p {
  font-size: 1.35rem;
  color: var(--color-text-light);
  line-height: 1.8;
  text-align: left;
}

/* --- About Clinic Feature Grid (4-column) --- */
.about-clinic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.clinic-feature-card {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-top: 3px solid var(--color-accent);
  transition: var(--transition);
}

.clinic-feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.clinic-feature-image {
  width: 100%;
  overflow: hidden;
}

.clinic-feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.clinic-feature-body {
  padding: 25px 22px 28px;
}

.clinic-feature-num {
  font-family: var(--font-english);
  font-size: 2.8rem;
  font-weight: 300;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
}

.clinic-feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.clinic-feature-card p {
  font-size: 1.35rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- Trouble Section --- */
.trouble {
  background: linear-gradient(180deg, #faf7f2 0%, var(--color-white) 100%);
}

.trouble-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-bottom: 50px;
}

.trouble-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 32px 22px 28px;
  text-align: center;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: var(--transition);
}

.trouble-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
}

.trouble-icon {
  margin-bottom: 18px;
}

.trouble-icon img {
  width: 70px;
  height: 70px;
}

.trouble-icon img.trouble-photo {
  width: 80%;
  height: auto;
  border-radius: 10px;
  display: block;
  margin: 0 auto;
}

.trouble-card h3 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 12px;
  line-height: 1.55;
  letter-spacing: 0.03em;
}

.trouble-card p {
  font-size: 1.35rem;
  color: var(--color-text-light);
  line-height: 1.8;
  text-align: left;
}

.trouble-cta {
  text-align: center;
  padding: 40px 20px;
  background: var(--color-primary);
  border-radius: 12px;
  color: var(--color-white);
}

.trouble-cta p {
  font-size: 1.5rem;
  line-height: 1.9;
  margin-bottom: 25px;
  color: rgba(255, 255, 255, 0.9);
}

.trouble-cta strong {
  color: var(--color-accent);
  font-weight: 600;
}

/* --- Movie Section --- */
.movie-section {
  padding-top: calc(var(--section-padding) * 0.4);
}

.movie-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.movie-responsive {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 10px;
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.1);
}

.movie-responsive iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* --- Flow Section --- */

.flow-steps {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.flow-step {
  display: flex;
  gap: 30px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border-light);
  align-items: center;
}

.flow-step:last-child {
  border-bottom: none;
}

.flow-step .step-number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-english);
  font-size: 2.4rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 50%;
}

.flow-step .step-content {
  flex: 1;
  min-width: 0;
}

.flow-step .step-content h3 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.flow-step .step-content p {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.flow-step .step-content p + p {
  margin-top: 1em;
}

/* --- Price Section --- */
.price {
  background: var(--color-bg);
}

.price-table {
  max-width: 800px;
  margin: 0 auto;
  background: var(--color-white);
  border: 1px solid var(--color-border);
}

.price-table table {
  width: 100%;
  border-collapse: collapse;
}

.price-table th,
.price-table td {
  padding: 20px 30px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 1.6rem;
}

.price-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.price-table td:last-child {
  text-align: right;
  font-weight: 600;
  color: var(--color-primary);
}

.price-highlight {
  max-width: 700px;
  margin: 0 auto 40px;
  text-align: center;
  padding: 50px 40px;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.price-label {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.price-num {
  font-family: var(--font-english);
  font-size: 5.6rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.price-unit {
  font-size: 2.4rem;
  margin-left: 4px;
}

.price-tax {
  font-size: 1.4rem;
  color: var(--color-text-muted);
  margin-left: 8px;
}

.price-monthly {
  font-size: 1.5rem;
  color: var(--color-text-light);
}

.price-monthly strong {
  color: var(--color-primary);
  font-size: 1.7rem;
}

.price-includes {
  max-width: 700px;
  margin: 0 auto 30px;
  padding: 30px 40px;
  background: var(--color-white);
  border-radius: 8px;
}

.price-includes-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 20px;
  letter-spacing: 0.08em;
}

.price-includes ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 30px;
  max-width: 520px;
  margin: 0 auto;
}

.price-includes li {
  position: relative;
  padding-left: 18px;
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.price-includes li::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.price-note {
  max-width: 800px;
  margin: 20px auto 0;
  font-size: 1.4rem;
  color: var(--color-text-muted);
}

/* --- Straumann Section --- */
.straumann {
  background: var(--color-white);
}

.straumann-image {
  max-width: 800px;
  margin: 0 auto 50px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.06);
}

.straumann-image img {
  width: 100%;
  height: auto;
  display: block;
}

.straumann-intro {
  max-width: 860px;
  margin: 0 auto 50px;
  text-align: left;
}

.straumann-intro p {
  font-size: 1.6rem;
  line-height: 2;
  color: var(--color-text-light);
}

.straumann-numbers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 800px;
  margin: 0 auto 20px;
}

.straumann-source {
  max-width: 760px;
  margin: 0 auto 60px;
  text-align: center;
  font-size: 1.2rem;
  line-height: 1.9;
  color: var(--color-text-muted);
}

.straumann-num-item {
  text-align: center;
  padding: 35px 20px;
  background: var(--color-accent-bg);
  border-radius: 12px;
}

.straumann-num {
  display: block;
  font-family: var(--font-english);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 10px;
}

.straumann-num small {
  font-size: 2.4rem;
}

.straumann-num-label {
  display: block;
  font-size: 1.4rem;
  color: var(--color-text-light);
  letter-spacing: 0.05em;
}

.straumann-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.straumann-feature {
  padding: 35px 30px;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: 12px;
}

.straumann-feature h3 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 15px;
}

.straumann-feature p {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* --- Cases Section --- */
.cases {
  background: var(--color-white);
}

/* Risk / caution box shown with case presentations (do not animate: must stay visible without JS) */
.case-caution {
  max-width: 860px;
  margin: 50px auto 0;
  padding: 28px 32px;
  background: var(--color-accent-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.case-caution h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.case-caution ul {
  list-style: none;
}

.case-caution li {
  position: relative;
  padding-left: 1.2em;
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.case-caution li::before {
  content: "・";
  position: absolute;
  left: 0;
}

@media (max-width: 768px) {
  .case-caution {
    padding: 22px 20px;
    margin-top: 40px;
  }
}

/* --- Case Study（実症例のBefore/After。写真は4:3） --- */
.case-study {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 32px 36px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

.case-study + .case-study {
  margin-top: 40px;
}

.case-study-header {
  margin-bottom: 24px;
}

.case-study .case-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.case-study h3 {
  font-size: 1.8rem;
  color: var(--color-primary);
  font-weight: 500;
}

.case-ba {
  display: grid;
  grid-template-columns: 1fr 32px 1fr;
  align-items: center;
  gap: 12px;
}

.case-ba-group {
  min-width: 0;
  align-self: start;
}

.case-ba-label {
  display: block;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.case-ba-label--after {
  color: var(--color-accent);
}

.case-ba-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.case-ba--single .case-ba-photos {
  grid-template-columns: 1fr;
}

.case-ba-photos img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--color-bg);
}

.case-ba-arrow {
  align-self: center;
  text-align: center;
  color: var(--color-accent);
  font-size: 2.2rem;
  /* ラベル行のぶん下げて写真の中心に合わせる */
  padding-top: 26px;
}

.case-ba-arrow::before {
  content: "→";
}

.case-study-summary {
  margin-top: 20px;
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.case-data {
  margin-top: 28px;
  border-top: 1px solid var(--color-border);
}

.case-data > div {
  display: grid;
  grid-template-columns: 160px 1fr;
  border-bottom: 1px solid var(--color-border);
}

.case-data dt {
  padding: 14px 16px;
  background: var(--color-accent-bg);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
}

.case-data dd {
  padding: 14px 18px;
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* 症例写真のライトボックス（cases.html 専用。js/lightbox.js とセット） */
.case-ba-photos img.lightbox-trigger {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 20px 20px;
  background: rgba(13, 27, 42, 0.88);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox-figure {
  max-width: min(1100px, 100%);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.lightbox-img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 140px);
  width: auto;
  height: auto;
  background: var(--color-white);
  cursor: zoom-out;
}

.lightbox-caption {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.3rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 8px;
  right: 12px;
  padding: 8px 12px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 3.2rem;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 768px) {
  .case-study {
    padding: 20px 16px 24px;
  }

  .case-ba {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .case-ba-arrow {
    padding-top: 0;
  }

  .case-ba-arrow::before {
    content: "↓";
  }

  .case-data > div {
    grid-template-columns: 1fr;
  }

  .case-data dt {
    padding: 8px 14px;
  }

  .case-data dd {
    padding: 12px 14px 16px;
  }
}

/* --- Voice Section --- */

.voice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.merit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.voice-card {
  background: var(--color-white);
  padding: 40px;
  position: relative;
}

.voice-card::before {
  content: "\201C";
  position: absolute;
  top: 15px;
  left: 25px;
  font-family: var(--font-english);
  font-size: 6rem;
  color: var(--color-accent);
  opacity: 0.2;
  line-height: 1;
}

.voice-card .voice-meta {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 15px;
  letter-spacing: 0.05em;
}

.voice-card p {
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 2;
}

/* --- Column Section --- */
.column {
  background: var(--color-white);
}

.column-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.column-card {
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: var(--transition);
}

.column-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  transform: translateY(-3px);
}

.column-card .column-thumb {
  height: 180px;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1.2rem;
}

.column-card .column-body {
  padding: 25px;
}

.column-card .column-category {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.column-card h3 {
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 10px;
  line-height: 1.5;
}

.column-card .column-date {
  font-size: 1.2rem;
  color: var(--color-text-muted);
}

.btn-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 40px;
  padding: 14px 40px;
  border: 1px solid var(--color-primary);
  color: var(--color-white);
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  background: var(--color-primary);
  cursor: pointer;
  transition: var(--transition);
}

.btn-more:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

/* --- FAQ Section --- */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-white);
  margin-bottom: 2px;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 30px;
  cursor: pointer;
  font-size: 1.6rem;
  color: var(--color-primary);
  font-weight: 500;
  transition: var(--transition);
}

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

.faq-question::after {
  content: "+";
  font-size: 2rem;
  color: var(--color-accent);
  font-weight: 300;
  transition: var(--transition);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 30px 25px;
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 2;
}

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--color-white);
}

.cta-section h2 {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 400;
  margin-bottom: 15px;
  letter-spacing: 0.05em;
}

.cta-section p {
  font-size: 1.6rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
}

.cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
}

.btn-cta-tel {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 40px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  font-size: 2.4rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.btn-cta-tel .tel-small {
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.6);
}

.btn-cta-reserve {
  padding: 20px 50px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 1.6rem;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-cta-reserve:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
}

/* --- Access Section --- */

.access-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.access-map {
  height: 400px;
  background: var(--color-bg);
}

.access-map iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.access-info h3 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 25px;
}

.access-info dl {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 15px 20px;
}

.access-info dt {
  font-size: 1.4rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.access-info dd {
  font-size: 1.5rem;
  color: var(--color-text-light);
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 60px 0 30px;
}

/* Footer Access */
.footer-access {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 35px;
  margin-bottom: 45px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-access-info .footer-clinic-name {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-address {
  font-size: 1.35rem;
  line-height: 1.9;
  margin-bottom: 12px;
}

.footer-tel {
  margin-bottom: 8px;
}

.footer-tel a {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.footer-tel a:hover {
  color: var(--color-accent-light);
}

.footer-note {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.65);
}

/* Hours Table */
.hours-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 10px;
}

.hours-table th,
.hours-table td {
  padding: 8px 6px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.hours-table thead th {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 1.2rem;
}

.hours-table thead th.holiday {
  color: var(--color-accent);
}

.hours-table tbody td {
  color: rgba(255, 255, 255, 0.85);
}

.hours-table .time-label {
  font-size: 1.15rem;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.7);
  text-align: left;
  padding-left: 10px;
}

.hours-table .closed {
  color: rgba(255, 255, 255, 0.35);
}

/* Footer Map */
.footer-map {
  border-radius: 8px;
  overflow: hidden;
}

.footer-map iframe {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
}

/* Footer Nav */
.footer-inner {
  margin-bottom: 40px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.footer-nav a {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.2rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
  color: var(--color-accent-light);
}

/* --- Fixed CTA (Mobile) --- */
.fixed-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background: var(--color-white);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.fixed-cta-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.fixed-cta a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-align: center;
}

.fixed-cta .fixed-tel {
  background: var(--color-white);
  color: var(--color-primary);
}

.fixed-cta .fixed-reserve {
  background: var(--color-accent);
  color: var(--color-white);
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 15px 0;
  background: var(--color-bg);
  margin-top: var(--header-height);
}

.breadcrumb ol {
  display: flex;
  gap: 10px;
  font-size: 1.2rem;
  color: var(--color-text-muted);
}

.breadcrumb li + li::before {
  content: ">";
  margin-right: 10px;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

/* --- Page Header --- */
.page-header {
  position: relative;
  background-color: #f0ece4;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 90px 0;
  margin-top: var(--header-height);
  text-align: center;
  color: var(--color-primary);
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.15) 100%);
  pointer-events: none;
}

.page-header .en,
.page-header h1,
.page-header .page-header-title {
  position: relative;
  z-index: 1;
}

.page-header .en {
  display: block;
  font-family: var(--font-english);
  font-size: 1.3rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.page-header h1,
.page-header .page-header-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

/* Page-specific header backgrounds */
.ph-about   { background-image: url('../images/ph-about.svg'); }
.ph-feature  { background-image: url('../images/ph-feature.svg'); }
.ph-flow    { background-image: url('../images/ph-flow.svg'); }
.ph-price   { background-image: url('../images/ph-price.svg'); }
.ph-cases   { background-image: url('../images/ph-cases.svg'); }
.ph-faq    { background-image: url('../images/ph-faq.svg'); }
.ph-contact  { background-image: url('../images/ph-contact.svg'); }
.ph-access  { background-image: url('../images/ph-access.svg'); }
.ph-privacy  { background-image: url('../images/ph-privacy.svg'); }
.ph-column  { background-image: url('../images/ph-column.svg'); }

/* --- Column List Page --- */
.column-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 60px;
}

.column-filter {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.column-filter button {
  padding: 8px 20px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 1.3rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-main);
}

.column-filter button.active,
.column-filter button:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* --- Column Detail Page --- */
.column-detail {
  max-width: 800px;
  margin: 0 auto;
}

.column-detail .column-detail-header {
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-border-light);
}

.column-detail .column-eyecatch {
  margin-bottom: 40px;
}

.column-detail .column-eyecatch img {
  display: block;
  width: 100%;
  height: auto;
}

.column-detail .column-detail-category {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: 15px;
}

.column-detail h1 {
  font-size: 2.8rem;
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.5;
  margin-bottom: 15px;
}

.column-detail .column-detail-date {
  font-size: 1.3rem;
  color: var(--color-text-muted);
}

.column-detail .column-content h2 {
  font-size: 2.2rem;
  font-weight: 500;
  color: var(--color-primary);
  margin: 50px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
}

.column-detail .column-content h3 {
  font-size: 1.8rem;
  font-weight: 500;
  color: var(--color-primary);
  margin: 35px 0 15px;
}

.column-detail .column-content p {
  font-size: 1.6rem;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: 20px;
}

.column-detail .column-content ul {
  margin: 15px 0;
  padding-left: 20px;
}

.column-detail .column-content ul li {
  position: relative;
  padding-left: 15px;
  margin-bottom: 8px;
  font-size: 1.5rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.column-detail .column-content ul li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

/* Related Articles */
.related-articles {
  margin-top: 80px;
  padding-top: 60px;
  border-top: 1px solid var(--color-border-light);
}

.related-articles h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 30px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  50.1% {
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1500px) {
  .header-tel {
    display: none;
  }
}

@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    height: 100vh;
    background: var(--color-white);
    padding: 100px 30px 40px;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    gap: 6px;
    overflow-y: auto;
    z-index: 1050;
  }

  .nav-menu.active .nav-item {
    position: static;
    display: block;
    width: 100%;
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-menu.active .nav-toggle {
    width: 100%;
    justify-content: space-between;
    font-size: 1.5rem;
    padding: 14px 0;
  }

  .nav-menu.active .dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    min-width: 0;
    padding: 0 0 10px 16px;
    opacity: 1;
    visibility: visible;
    display: none;
  }

  .nav-menu.active .nav-item.has-dropdown:hover .dropdown {
    display: none;
  }

  .nav-menu.active .nav-item.has-dropdown.open .dropdown {
    display: block;
  }

  .nav-menu.active .dropdown a {
    padding: 9px 0;
    font-size: 1.4rem;
  }

  .nav-menu.active > .nav-link {
    display: block;
    width: 100%;
    font-size: 1.5rem;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border-light);
  }

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

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

  .footer-map {
    grid-column: 1 / -1;
  }

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }

  .features-grid,
  .column-grid,
  .column-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .equipment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .equipment-card:nth-child(4),
  .equipment-card:nth-child(5) {
    grid-column: span 1;
  }
  .equipment-card:nth-child(5):last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }

  .straumann-features {
    grid-template-columns: 1fr;
  }

  .about-clinic-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .about-recommend {
    grid-template-columns: repeat(2, 1fr);
  }

  .recommend-card,
  .recommend-card:nth-child(4),
  .recommend-card:nth-child(5) {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
    --header-height: 76px;
  }

  .section-header h2 {
    font-size: 2.4rem;
  }

  /* Hero: switch to mobile image */
  .hero-image .hero-img-pc {
    display: none;
  }

  .hero-image .hero-img-sp {
    display: block;
  }

  .hero-buttons {
    padding: 20px 15px;
    gap: 10px;
  }

  .hero-h1 {
    font-size: 1.5rem;
  }

  .hero-buttons-inner {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  /* Trust section mobile */

  .trust-message p {
    font-size: 1.4rem;
  }

  .trust-message {
    margin-bottom: 40px;
  }

  .trust-brands {
    padding: 25px 20px;
  }

  .trust-brands-text {
    font-size: 1.3rem;
  }

  .pc-only {
    display: none;
  }

  .features-grid,
  .column-grid,
  .voice-grid,
  .merit-grid,
  .column-list-grid {
    grid-template-columns: 1fr;
  }

  .about-benefits {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .trouble-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto 40px;
  }

  .trouble-cta p {
    font-size: 1.4rem;
  }

  .about-step-item,
  .about-step-item.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
    gap: 20px;
  }

  .about-steps {
    gap: 35px;
  }

  .about-recommend {
    grid-template-columns: 1fr;
  }

  .recommend-card,
  .recommend-card:nth-child(4),
  .recommend-card:nth-child(5) {
    grid-column: span 1;
  }

  .about-clinic-grid {
    grid-template-columns: 1fr;
  }

  .equipment-grid {
    grid-template-columns: 1fr;
  }
  .equipment-card:nth-child(5):last-child {
    max-width: 100%;
  }

  .price-highlight {
    padding: 35px 25px;
  }

  .price-num {
    font-size: 4.4rem;
  }

  .price-includes {
    padding: 25px 20px;
  }

  .price-includes ul {
    grid-template-columns: 1fr;
  }

  .straumann-numbers {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }

  .straumann-source {
    text-align: left;
  }

  .straumann-num {
    font-size: 3rem;
  }

  .straumann-num-label {
    font-size: 1.2rem;
  }

  .cta-buttons {
    flex-direction: column;
  }

  .footer-access {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .footer-map iframe {
    min-height: 180px;
  }

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

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .fixed-cta {
    display: block;
  }

  .header-tel {
    display: none;
  }

  .header .btn-reserve {
    display: none;
  }

  .flow-step {
    flex-wrap: wrap;
    gap: 15px;
  }

  .flow-step .step-number {
    width: 45px;
    height: 45px;
    font-size: 1.8rem;
  }

  .page-header {
    padding: 50px 0;
  }

  .page-header h1,
  .page-header .page-header-title {
    font-size: 2.4rem;
  }

  .price-table th,
  .price-table td {
    padding: 15px;
    font-size: 1.4rem;
  }

  .column-detail h1 {
    font-size: 2.2rem;
  }
}

/* --- Doctor Cards (医院案内) --- */
.doctor-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  padding: 36px 30px;
}

.doctor-role {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.doctor-name {
  font-family: var(--font-heading);
  font-weight: 400;
  font-size: 2.4rem;
  color: var(--color-primary);
  margin: 6px 0 20px;
}

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

.doctor-history li {
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.7;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.doctor-history li:last-child {
  border-bottom: none;
}

/* --- Implant Price Table (種類別 1本あたり料金) --- */
.implant-price-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.implant-price-tax {
  text-align: right;
  font-size: 1.4rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

/* 表そのものを横スクロールの箱に入れる（ページ本体は横スクロールさせない） */
.implant-price-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.implant-price-table {
  width: 100%;
  min-width: 660px;
  border-collapse: separate;
  border-spacing: 4px;
  table-layout: fixed;
}

.implant-price-table th,
.implant-price-table td {
  padding: 18px 12px;
  text-align: center;
  vertical-align: middle;
  font-size: 1.5rem;
  line-height: 1.7;
  color: var(--color-text);
}

.implant-price-table .col-label {
  background: #a6a6a6;
  width: 20%;
}

.implant-price-table tbody th {
  background: #f0f0f0;
  font-weight: 400;
}

.implant-price-table thead th {
  color: var(--color-white);
  font-weight: 500;
}

.implant-price-table thead .col-a { background: #2a9d78; }
.implant-price-table thead .col-b { background: #d94452; }
.implant-price-table thead .col-c { background: #21398f; }

.implant-price-table thead .brand {
  display: block;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.5rem;
}

.implant-price-table thead .total {
  display: block;
  text-align: center;
  font-family: var(--font-heading);
  margin-top: 10px;
  font-size: 1.8rem;
  font-weight: 700;
}

.implant-price-table tbody tr:nth-child(odd) .col-a { background: #cdeadd; }
.implant-price-table tbody tr:nth-child(even) .col-a { background: #e2f3eb; }
.implant-price-table tbody tr:nth-child(odd) .col-b { background: #f6ccd0; }
.implant-price-table tbody tr:nth-child(even) .col-b { background: #fbe1e4; }
.implant-price-table tbody tr:nth-child(odd) .col-c { background: #c9d3ec; }
.implant-price-table tbody tr:nth-child(even) .col-c { background: #dfe5f5; }

.implant-price-foot {
  max-width: 900px;
  margin: 26px auto 0;
  text-align: center;
  font-size: 1.4rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

@media (max-width: 768px) {
  .implant-price-table th,
  .implant-price-table td {
    padding: 14px 8px;
    font-size: 1.3rem;
  }

  .implant-price-table thead .brand {
    font-size: 1.3rem;
  }

  .implant-price-table thead .total {
    font-size: 1.5rem;
    margin-top: 6px;
  }

  .implant-price-foot {
    text-align: left;
    font-size: 1.3rem;
  }
}

/* All-on-4 vs conventional full-arch comparison table (price.html) */
.allon4-compare-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.allon4-compare-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  background: var(--color-white);
}

.allon4-compare-table th,
.allon4-compare-table td {
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  font-size: 1.4rem;
  line-height: 1.8;
  vertical-align: middle;
  text-align: left;
}

.allon4-compare-table thead th {
  text-align: center;
  font-weight: 600;
}

.allon4-compare-table thead .col-conv {
  background: var(--color-primary);
  color: var(--color-white);
}

.allon4-compare-table thead .col-allon4 {
  background: var(--color-accent);
  color: var(--color-white);
}

.allon4-compare-table tbody th {
  background: var(--color-bg);
  font-weight: 600;
  width: 8.5em;
}

.allon4-compare-table td.col-allon4 {
  background: var(--color-accent-bg);
}

@media (max-width: 768px) {
  .allon4-compare-table th,
  .allon4-compare-table td {
    padding: 12px 10px;
    font-size: 1.3rem;
  }
}