@charset "UTF-8";

/* ==========================================================
   Implant Special Site - Style Sheet
   Concept : White × Wood × Gold / Modern & Elegant
   ========================================================== */

/* ---------- Variables ---------- */
:root{
  --color-white:      #ffffff;
  --color-cream:      #fbf8f3;
  --color-base:       #f6f1e7;
  --color-wood:       #b08a5b;
  --color-wood-dark:  #7d5a36;
  --color-gold:       #c9a96a;
  --color-gold-dark:  #a78848;
  --color-text:       #3a3024;
  --color-text-sub:   #6b6052;
  --color-line:       #e6dcc9;

  --font-jp: "Noto Serif JP", "游明朝", "Yu Mincho", serif;
  --font-en: "Cormorant Garamond", serif;

  --max-w: 1120px;
  --radius: 4px;
  --shadow: 0 8px 30px rgba(60, 45, 25, .08);
  --ease: cubic-bezier(.4,0,.2,1);
}

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

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img{ max-width: 100%; height: auto; display: block; }
a{ color: inherit; text-decoration: none; transition: opacity .25s var(--ease), color .25s var(--ease); }
a:hover{ opacity: .75; }
h1,h2,h3,h4,p,dl,dd,ul{ margin: 0; padding: 0; }
ul{ list-style: none; }

/* ---------- Layout helpers ---------- */
.container{
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 24px;
}

main{ display: block; }

/* ---------- Section head ---------- */
.section-head{
  text-align: center;
  margin-bottom: 56px;
}
.section-en{
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .25em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-title{
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--color-text);
}
.section-divider{
  display: inline-block;
  width: 50px;
  height: 1px;
  background: var(--color-gold);
  margin-top: 22px;
}

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 240px;
  padding: 18px 32px;
  font-family: var(--font-jp);
  font-size: 15px;
  letter-spacing: .15em;
  text-align: center;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all .3s var(--ease);
  cursor: pointer;
}
.btn-gold{
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  box-shadow: 0 6px 20px rgba(201, 169, 106, .35);
}
.btn-gold:hover{ opacity: 1; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(201, 169, 106, .45); }

.btn-gold-lg{
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  padding: 22px 36px;
  box-shadow: 0 6px 20px rgba(201, 169, 106, .35);
}
.btn-gold-lg:hover{ opacity: 1; transform: translateY(-2px); }

.btn-outline{
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-gold);
  padding: 22px 36px;
}
.btn-outline:hover{ opacity: 1; background: var(--color-gold); color: #fff; }

.btn-small{ font-size: 12px; letter-spacing: .2em; opacity: .85; }
.btn-large{ font-size: 20px; letter-spacing: .1em; font-weight: 500; }

/* ==========================================================
   Header
   ========================================================== */
.site-header{
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.header-inner{
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo a{
  display: inline-flex;
  align-items: center;
  gap: 12px;
  line-height: 1.2;
}
.logo-mark{
  display: inline-flex;
  width: 54px;
  height: 54px;
  flex-shrink: 0;
}
.logo-mark img,
.logo-mark svg{
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 1px 1px rgba(125, 90, 54, .15));
}
.logo-text{
  display: inline-flex;
  flex-direction: column;
  line-height: 1.3;
}
.logo-jp{
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--color-text);
  white-space: nowrap;
}
.logo-sub{
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--color-gold-dark);
  margin-top: 5px;
  font-weight: 500;
  white-space: nowrap;
}

.global-nav ul{
  display: flex;
  gap: 24px;
  align-items: center;
}
.global-nav a{
  font-size: 14px;
  letter-spacing: .14em;
  color: var(--color-text);
  position: relative;
}
.global-nav a:not(.nav-cta)::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0);
  transition: transform .3s var(--ease);
}
.global-nav a:not(.nav-cta):hover::after{ transform: scaleX(1); }

.nav-cta{
  background: var(--color-gold);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: var(--radius);
}
.nav-cta:hover{ background: var(--color-gold-dark); opacity: 1; }

.menu-toggle{
  display: none;
  width: 36px;
  height: 30px;
  background: none;
  border: 0;
  position: relative;
  cursor: pointer;
}
.menu-toggle span{
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: var(--color-text);
  transition: all .3s var(--ease);
}
.menu-toggle span:nth-child(1){ top: 4px; }
.menu-toggle span:nth-child(2){ top: 14px; }
.menu-toggle span:nth-child(3){ top: 24px; }
.menu-toggle.is-active span:nth-child(1){ top: 14px; transform: rotate(45deg); }
.menu-toggle.is-active span:nth-child(2){ opacity: 0; }
.menu-toggle.is-active span:nth-child(3){ top: 14px; transform: rotate(-45deg); }

/* ==========================================================
   Hero
   ========================================================== */
.hero{
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 110px 0 130px;
  color: #fff;
  text-align: center;
}
.hero-image{
  position: absolute; inset: 0;
  background-image:
    linear-gradient(135deg, rgba(125,90,54,.55), rgba(58,48,36,.55)),
    url("images/hero.jpg");
  background-size: cover;
  background-position: center;
  background-color: #7d5a36;
  transform: scale(1.06);
  animation: heroZoom 12s ease-out forwards;
}
.hero-overlay{
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,.05) 0%, rgba(0,0,0,.45) 100%);
}
.hero-content{
  position: relative;
  z-index: 3;
  padding: 0 24px;
  max-width: 800px;
}
.hero-sub{
  font-family: var(--font-en);
  font-size: 16px;
  letter-spacing: .35em;
  color: var(--color-gold);
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-title{
  font-size: clamp(26px, 4.4vw, 46px);
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: .08em;
  margin-bottom: 32px;
  text-shadow: 0 2px 14px rgba(0,0,0,.35);
}
.hero-accent{
  color: var(--color-gold);
  font-weight: 600;
}
.hero-accent-wrap{
  display: inline-block;
  white-space: nowrap;
}
.hero-lead{
  font-size: clamp(14px, 1.6vw, 17px);
  line-height: 2;
  letter-spacing: .12em;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0,0,0,.4);
}
.hero-lead strong{
  color: var(--color-gold);
  font-weight: 600;
  letter-spacing: .14em;
  padding: 0 2px;
}

.hero-tagline{
  font-size: clamp(12px, 1.3vw, 14px);
  letter-spacing: .14em;
  color: rgba(255,255,255,.8);
  margin-bottom: 36px;
  font-style: italic;
  text-shadow: 0 2px 10px rgba(0,0,0,.4);
}

.hero-features{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 12px;
  margin-bottom: 44px;
  padding: 0;
}
.hero-features li{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border: 1px solid rgba(201, 169, 106, .55);
  border-radius: 999px;
  background: rgba(201, 169, 106, .12);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 12.5px;
  letter-spacing: .08em;
  white-space: nowrap;
}
.hero-features li::before{
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--color-gold);
  transform: rotate(45deg);
  flex-shrink: 0;
}

.hero-scroll{
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: #fff;
  z-index: 1;
}
.hero-scroll span:first-child{
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .35em;
  opacity: .85;
}
.hero-scroll-line{
  width: 1px;
  height: 50px;
  background: rgba(255,255,255,.4);
  position: relative;
  overflow: hidden;
}
.hero-scroll-line::after{
  content: "";
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--color-gold);
  animation: scrollLine 2.4s ease-in-out infinite;
}

@keyframes heroZoom{
  from{ transform: scale(1.12); }
  to  { transform: scale(1.04); }
}
@keyframes scrollLine{
  0%   { transform: translateY(0); }
  100% { transform: translateY(200%); }
}

/* ==========================================================
   Concept
   ========================================================== */
.concept{
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 100%);
}
.concept-lead{
  text-align: center;
  margin-bottom: 64px;
}
.concept-catch{
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--color-wood-dark);
  margin-bottom: 32px;
}
.concept-text{
  font-size: 15px;
  line-height: 2.2;
  letter-spacing: .08em;
  color: var(--color-text-sub);
}

/* Concept visual (clinic photo) */
.concept-visual{
  margin: 0 auto 72px;
  max-width: 960px;
}
.concept-figure{
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.concept-figure::before{
  content: "";
  position: absolute;
  top: -14px; right: -14px;
  width: 120px; height: 120px;
  border-top: 1px solid var(--color-gold);
  border-right: 1px solid var(--color-gold);
  z-index: 2;
  pointer-events: none;
}
.concept-figure::after{
  content: "";
  position: absolute;
  bottom: -14px; left: -14px;
  width: 120px; height: 120px;
  border-bottom: 1px solid var(--color-gold);
  border-left: 1px solid var(--color-gold);
  z-index: 2;
  pointer-events: none;
}
.concept-figure img{
  width: 100%;
  height: clamp(280px, 50vw, 520px);
  object-fit: cover;
  display: block;
  transition: transform 1.2s var(--ease);
}
.concept-figure:hover img{ transform: scale(1.03); }
.concept-figure figcaption{
  position: absolute;
  left: 32px; bottom: 28px;
  color: #fff;
  background: linear-gradient(90deg, rgba(125,90,54,.85), rgba(125,90,54,.55));
  padding: 14px 22px;
  border-left: 2px solid var(--color-gold);
  max-width: 80%;
}
.figure-en{
  display: block;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .25em;
  color: var(--color-gold);
  margin-bottom: 4px;
}
.figure-jp{
  display: block;
  font-size: 14px;
  letter-spacing: .08em;
  line-height: 1.6;
}

.concept-features{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.feature-card{
  position: relative;
  padding: 48px 32px 36px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.feature-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(60, 45, 25, .12);
}
.feature-number{
  position: absolute;
  top: 18px;
  right: 24px;
  font-family: var(--font-en);
  font-size: 36px;
  color: var(--color-gold);
  opacity: .6;
  letter-spacing: .02em;
}
.feature-title{
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--color-wood-dark);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}
.feature-text{
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--color-text-sub);
}

/* ==========================================================
   Common section lead text
   ========================================================== */
.section-lead{
  text-align: center;
  font-size: 15px;
  line-height: 2.1;
  letter-spacing: .1em;
  color: var(--color-text-sub);
  margin-bottom: 56px;
}

/* ==========================================================
   Features Section (当院のインプラントの特徴)
   ========================================================== */
.features{
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--color-white) 0%, var(--color-cream) 100%);
  position: relative;
  overflow: hidden;
}
.features::before{
  content: "";
  position: absolute;
  top: 60px; right: -120px;
  width: 360px; height: 360px;
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  opacity: .12;
  pointer-events: none;
}

.features-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}

.feat-card{
  position: relative;
  padding: 36px 28px 30px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.feat-card:hover{
  transform: translateY(-4px);
  border-color: var(--color-gold);
  box-shadow: 0 14px 32px rgba(60, 45, 25, .12);
}
.feat-card::before{
  content: "";
  position: absolute;
  top: 0; left: 28px;
  width: 36px; height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-dark));
}
.feat-num{
  display: inline-block;
  font-family: var(--font-en);
  font-size: 28px;
  letter-spacing: .04em;
  color: var(--color-gold);
  opacity: .7;
  margin-bottom: 10px;
  font-weight: 500;
}
.feat-title{
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--color-wood-dark);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}
.feat-text{
  font-size: 14px;
  line-height: 1.95;
  letter-spacing: .04em;
  color: var(--color-text-sub);
}

.features-photo{
  margin: 0 auto;
  max-width: 960px;
}
.features-photo img{
  width: 100%;
  height: clamp(260px, 46vw, 460px);
  object-fit: cover;
}

/* ==========================================================
   Doctor Profile Section (医師紹介)
   ========================================================== */
.doctor{
  padding: 120px 0;
  background: var(--color-base);
  position: relative;
}
.doctor::before{
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg,
      transparent 0, transparent 200px,
      rgba(176, 138, 91, .04) 200px, rgba(176, 138, 91, .04) 201px);
  pointer-events: none;
}
.doctor .container{ position: relative; }

.doctor-wrap{
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: start;
  max-width: 1000px;
  margin-inline: auto;
}

.doctor-photo{
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.doctor-photo::before{
  content: "";
  position: absolute;
  top: -14px; left: -14px;
  width: 80px; height: 80px;
  border-top: 1px solid var(--color-gold);
  border-left: 1px solid var(--color-gold);
  z-index: 2;
  pointer-events: none;
}
.doctor-photo::after{
  content: "";
  position: absolute;
  bottom: -14px; right: -14px;
  width: 80px; height: 80px;
  border-bottom: 1px solid var(--color-gold);
  border-right: 1px solid var(--color-gold);
  z-index: 2;
  pointer-events: none;
}
.doctor-photo img{
  width: 100%;
  height: 460px;
  object-fit: cover;
  display: block;
}

.doctor-motto{
  text-align: center;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.7;
  letter-spacing: .1em;
  color: var(--color-wood-dark);
  margin-bottom: 56px;
  font-weight: 500;
  font-style: italic;
}
.motto-accent{
  color: var(--color-gold-dark);
  font-weight: 600;
  letter-spacing: .14em;
  font-style: normal;
}

.doctor-info{
  padding-top: 8px;
}
.doctor-role{
  font-size: 14px;
  letter-spacing: .15em;
  color: var(--color-gold-dark);
  font-weight: 500;
  margin-bottom: 8px;
}
.doctor-role-en{
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .25em;
  margin-left: 8px;
  text-transform: uppercase;
  opacity: .8;
}
.doctor-name{
  font-size: clamp(26px, 3.5vw, 32px);
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--color-wood-dark);
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-line);
}
.doctor-name-en{
  display: block;
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .2em;
  color: var(--color-gold-dark);
  font-weight: 400;
  margin-top: 6px;
}

.message-label{
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  margin-bottom: 14px;
  font-weight: 500;
  position: relative;
  padding-left: 16px;
}
.message-label::before{
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 8px; height: 1px;
  background: var(--color-gold);
}

.message-text{
  font-size: 14px;
  line-height: 2;
  letter-spacing: .05em;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}
.message-text:last-child{ margin-bottom: 0; }
.message-text strong{
  color: var(--color-wood-dark);
  font-weight: 600;
  letter-spacing: .08em;
}

/* Doctor Career / Qualifications / Affiliations */
.doctor-details{
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 40px;
  max-width: 1000px;
  margin: 72px auto 0;
}
.detail-side{
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.detail-block{
  padding: 32px 32px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.detail-label{
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}
.label-en{
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
}
.label-jp{
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--color-wood-dark);
}

.career-list{
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.career-item{
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 20px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-line);
}
.career-item:last-child{ border-bottom: 0; padding-bottom: 0; }
.career-item dt{
  font-family: var(--font-jp);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--color-gold-dark);
  font-weight: 500;
  padding-top: 2px;
}
.career-item dd{
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--color-text);
}

.qual-list{
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.qual-list li{
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.8;
  letter-spacing: .05em;
  color: var(--color-text);
}
.qual-list li::before{
  content: "";
  position: absolute;
  left: 0; top: 12px;
  width: 6px; height: 6px;
  background: var(--color-gold);
  transform: rotate(45deg);
}

/* ==========================================================
   Case Study Section (症例紹介)
   ========================================================== */
.cases{
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 100%);
  position: relative;
  overflow: hidden;
}
.cases::before{
  content: "";
  position: absolute;
  bottom: 80px; left: -120px;
  width: 280px; height: 280px;
  border: 1px solid var(--color-wood);
  border-radius: 50%;
  opacity: .1;
  pointer-events: none;
}

.cases-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  margin: 0 auto 32px;
  max-width: 1000px;
}

.case-card{
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.case-card:hover{
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(60, 45, 25, .12);
}

.case-images{
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 32px 32px 0;
  background: var(--color-cream);
}
.case-img{
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  background:
    repeating-linear-gradient(45deg,
      var(--color-base) 0, var(--color-base) 10px,
      var(--color-cream) 10px, var(--color-cream) 20px);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  overflow: hidden;
}
.case-img img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.case-img img[src=""],
.case-img img:not([src]){ display: none; }

.case-label{
  position: absolute;
  top: 8px; left: 8px;
  z-index: 2;
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255,255,255,.92);
  color: var(--color-wood-dark);
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  font-weight: 500;
  border-radius: 2px;
  border: 1px solid var(--color-line);
}
.case-label.is-after{
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  border-color: transparent;
}

.case-arrow{
  font-family: var(--font-en);
  font-size: 32px;
  color: var(--color-gold-dark);
  font-weight: 500;
}

.case-xray{
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 12px 32px 24px;
  background: var(--color-cream);
}
.case-img-xray{
  aspect-ratio: 16 / 9;
  background: #1a1a1a;
  border: 1px solid var(--color-line);
}
.case-img-xray img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-info{
  padding: 32px 36px 36px;
}
.case-num{
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: .28em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 6px;
  font-weight: 500;
}
.case-title{
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--color-wood-dark);
  line-height: 1.5;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}
.case-data{
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.case-row{
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--color-line);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: .04em;
}
.case-row:last-child{ border-bottom: 0; padding-bottom: 0; }
.case-row dt{
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--color-gold-dark);
  font-weight: 500;
  padding-top: 2px;
}
.case-row dd{
  margin: 0;
  color: var(--color-text);
}

.cases-disclaimer{
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  font-size: 12.5px;
  line-height: 1.85;
  letter-spacing: .05em;
  color: var(--color-text-sub);
  padding: 14px 20px;
  background: rgba(201, 169, 106, .06);
  border-left: 2px solid var(--color-gold);
  border-radius: 2px;
}

/* ==========================================================
   FAQ Section (Q&A)
   ========================================================== */
.faq{
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 100%);
}
.faq-list{
  max-width: 880px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item{
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color .3s var(--ease);
}
.faq-item[open]{
  border-color: var(--color-gold);
}

.faq-item summary{
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 28px;
  cursor: pointer;
  list-style: none;
  transition: background .3s var(--ease);
}
.faq-item summary::-webkit-details-marker{ display: none; }
.faq-item summary:hover{
  background: var(--color-cream);
}

.faq-q{
  flex-shrink: 0;
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 500;
  border-radius: 50%;
  box-shadow: 0 3px 8px rgba(201, 169, 106, .3);
}
.faq-question{
  flex: 1;
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.6;
  color: var(--color-wood-dark);
}
.faq-icon{
  flex-shrink: 0;
  width: 14px; height: 14px;
  position: relative;
  transition: transform .35s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content: "";
  position: absolute;
  background: var(--color-gold-dark);
}
.faq-icon::before{
  top: 50%; left: 0; right: 0;
  height: 1.5px;
  transform: translateY(-50%);
}
.faq-icon::after{
  left: 50%; top: 0; bottom: 0;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform .35s var(--ease);
}
.faq-item[open] .faq-icon::after{
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.faq-answer{
  display: flex;
  gap: 18px;
  padding: 4px 28px 24px 28px;
  border-top: 1px solid var(--color-line);
  padding-top: 22px;
}
.faq-a{
  flex-shrink: 0;
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--color-gold-dark);
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 500;
  border: 1.5px solid var(--color-gold);
  border-radius: 50%;
}
.faq-answer p{
  flex: 1;
  font-size: 14px;
  line-height: 2;
  letter-spacing: .04em;
  color: var(--color-text-sub);
  padding-top: 6px;
}
.faq-answer p strong{
  color: var(--color-gold-dark);
  font-weight: 600;
}

/* ==========================================================
   Structure (Implant Diagram)
   ========================================================== */
.structure{
  padding: 120px 0;
  background:
    linear-gradient(180deg, var(--color-white) 0%, var(--color-cream) 100%);
  position: relative;
  overflow: hidden;
}
.structure::before{
  content: "";
  position: absolute;
  top: 80px; right: -120px;
  width: 360px; height: 360px;
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  opacity: .15;
  pointer-events: none;
}
.structure::after{
  content: "";
  position: absolute;
  bottom: 60px; left: -100px;
  width: 240px; height: 240px;
  border: 1px solid var(--color-wood);
  border-radius: 50%;
  opacity: .1;
  pointer-events: none;
}
.structure .container{ position: relative; }

.structure-lead{
  text-align: center;
  font-size: 15px;
  line-height: 2.1;
  letter-spacing: .1em;
  color: var(--color-text-sub);
  margin-bottom: 48px;
}

.structure-photo{
  margin: 0 auto 64px;
  max-width: 960px;
}
.structure-photo img{
  width: 100%;
  height: clamp(260px, 46vw, 460px);
  object-fit: cover;
}

.structure-wrap{
  display: block;
}

.structure-figure{
  position: relative;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.structure-figure::before,
.structure-figure::after{
  content: "";
  position: absolute;
  width: 60px; height: 60px;
  pointer-events: none;
}
.structure-figure::before{
  top: 10px; left: 10px;
  border-top: 1px solid var(--color-gold);
  border-left: 1px solid var(--color-gold);
}
.structure-figure::after{
  bottom: 10px; right: 10px;
  border-bottom: 1px solid var(--color-gold);
  border-right: 1px solid var(--color-gold);
}

.implant-svg{
  display: block;
  width: 100%;
  height: auto;
  max-height: 620px;
}

.structure-parts{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.part-card{
  position: relative;
  padding: 26px 28px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.part-card:hover{
  transform: translateY(-4px);
  border-color: var(--color-gold);
  box-shadow: 0 14px 32px rgba(60, 45, 25, .12);
}

.part-head{
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
}
.part-num{
  flex-shrink: 0;
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 500;
  border-radius: 50%;
  letter-spacing: .02em;
  box-shadow: 0 4px 12px rgba(201, 169, 106, .35);
}
.part-en{
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .25em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 2px;
}
.part-name{
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--color-wood-dark);
  line-height: 1.3;
}
.part-desc{
  font-size: 14px;
  line-height: 1.95;
  color: var(--color-text-sub);
  letter-spacing: .04em;
}

/* ==========================================================
   Menu
   ========================================================== */
.menu{
  padding: 120px 0;
  background: var(--color-base);
  position: relative;
}
.menu::before{
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(90deg,
      transparent 0, transparent 200px,
      rgba(176, 138, 91, .04) 200px, rgba(176, 138, 91, .04) 201px);
  pointer-events: none;
}
.menu .container{ position: relative; }

.menu-list{
  max-width: 880px;
  margin-inline: auto;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.menu-item{
  padding: 32px 40px;
  border-bottom: 1px solid var(--color-line);
  transition: background .3s var(--ease);
}
.menu-item:last-child{ border-bottom: 0; }
.menu-item:hover{ background: var(--color-cream); }

.menu-item-head{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.menu-name{
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--color-wood-dark);
}
.menu-price{
  font-family: var(--font-en);
  color: var(--color-gold-dark);
  white-space: nowrap;
}
.price-num{
  font-size: 26px;
  font-weight: 500;
  letter-spacing: .04em;
}
.price-unit{
  font-family: var(--font-jp);
  font-size: 12.5px;
  letter-spacing: .08em;
  margin-left: 4px;
  color: var(--color-text-sub);
}
.menu-desc{
  font-size: 14px;
  line-height: 1.95;
  color: var(--color-text-sub);
  letter-spacing: .05em;
}
.menu-note{
  margin-top: 28px;
  text-align: center;
  font-size: 12.5px;
  color: var(--color-text-sub);
  letter-spacing: .05em;
}

/* ---------- Info Blocks (Warranty / Payment) ---------- */
.info-block{
  max-width: 880px;
  margin: 56px auto 0;
  padding: 48px 52px;
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}
/* OSSTEM Brand Highlight Block */
.brand-block{
  border-top: 3px solid var(--color-gold);
  background:
    linear-gradient(135deg, var(--color-white) 0%, var(--color-cream) 100%);
  padding: 44px 48px;
}
.brand-flex{
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: center;
}
.brand-badge{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 28px 16px;
  background:
    linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #fff;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: 0 8px 24px rgba(201, 169, 106, .3);
  position: relative;
}
.brand-badge::before,
.brand-badge::after{
  content: "";
  position: absolute;
  width: 20px; height: 20px;
}
.brand-badge::before{
  top: 8px; left: 8px;
  border-top: 1px solid rgba(255,255,255,.4);
  border-left: 1px solid rgba(255,255,255,.4);
}
.brand-badge::after{
  bottom: 8px; right: 8px;
  border-bottom: 1px solid rgba(255,255,255,.4);
  border-right: 1px solid rgba(255,255,255,.4);
}
.brand-rank-label{
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .3em;
  text-transform: uppercase;
  opacity: .85;
  margin-bottom: 4px;
}
.brand-rank-num{
  font-family: var(--font-en);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: .04em;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.brand-rank-num em{
  font-style: normal;
  font-size: 56px;
  font-weight: 600;
}
.brand-rank-jp{
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,.35);
  font-size: 12.5px;
  letter-spacing: .12em;
  font-weight: 500;
}

.brand-content{ }
.brand-en{
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .25em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.brand-title{
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .08em;
  color: var(--color-wood-dark);
  margin-bottom: 16px;
}
.brand-name{
  display: inline-block;
  margin-top: 4px;
  font-family: var(--font-en);
  font-size: 1.05em;
  color: var(--color-gold-dark);
  letter-spacing: .12em;
}
.brand-text{
  font-size: 14.5px;
  line-height: 2;
  letter-spacing: .05em;
  color: var(--color-text-sub);
}
.brand-text strong,
.brand-emphasis{
  color: var(--color-gold-dark);
  font-weight: 600;
  letter-spacing: .08em;
  padding: 0 2px;
}

.warranty-block{
  border-top: 3px solid var(--color-gold);
}
.warranty-block::before{
  content: "";
  position: absolute;
  top: 24px; right: 28px;
  width: 56px; height: 56px;
  background:
    radial-gradient(circle, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  border-radius: 50%;
  opacity: .12;
}

.block-head{
  text-align: center;
  margin-bottom: 32px;
}
.block-en{
  display: block;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: .25em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.block-title{
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--color-wood-dark);
}
.block-divider{
  display: inline-block;
  width: 40px;
  height: 1px;
  background: var(--color-gold);
  margin-top: 18px;
}

.block-text{
  font-size: 15px;
  line-height: 2.1;
  letter-spacing: .06em;
  color: var(--color-text-sub);
  text-align: center;
}
.block-text strong{
  color: var(--color-gold-dark);
  font-weight: 600;
  letter-spacing: .08em;
}

/* Payment list */
.payment-list{
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0 auto 24px;
  max-width: 640px;
}
.payment-list li{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 24px;
  background: var(--color-cream);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.payment-list li:hover{
  border-color: var(--color-gold);
  transform: translateX(4px);
}
.payment-icon{
  color: var(--color-gold);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  flex-shrink: 0;
}
.payment-body{ flex: 1; }
.payment-name{
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--color-wood-dark);
  line-height: 1.5;
}
.payment-desc{
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: .04em;
  color: var(--color-text-sub);
}

.payment-note{
  margin-top: 24px;
  padding: 20px 26px;
  background: rgba(201, 169, 106, .08);
  border-left: 2px solid var(--color-gold);
  border-radius: 2px;
  font-size: 13.5px;
  line-height: 1.95;
  letter-spacing: .05em;
  color: var(--color-text-sub);
}
.payment-note strong{
  color: var(--color-gold-dark);
  font-weight: 600;
  letter-spacing: .08em;
}

/* ==========================================================
   Info
   ========================================================== */
.info{
  padding: 120px 0;
  background: var(--color-white);
}
.info-wrap{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: stretch;
}
.info-list{
  border-top: 1px solid var(--color-line);
}
.info-row{
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--color-line);
}
.info-row dt{
  font-size: 13.5px;
  letter-spacing: .15em;
  color: var(--color-gold-dark);
  font-weight: 500;
}
.info-row dd{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--color-text);
}

.info-map{
  position: relative;
  min-height: 420px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-line);
}
.info-map iframe{
  display: block;
  width: 100%;
  height: 100%;
  min-height: 420px;
  filter: saturate(.85) contrast(.95);
}

/* ==========================================================
   Reservation
   ========================================================== */
.reservation{
  padding: 100px 0;
  background:
    linear-gradient(135deg, var(--color-wood-dark) 0%, var(--color-wood) 100%);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.reservation::before{
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(201,169,106,.25) 0, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(201,169,106,.18) 0, transparent 50%);
  pointer-events: none;
}
.reservation-inner{ position: relative; z-index: 2; }
.reservation-en{
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: .35em;
  color: var(--color-gold);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.reservation-title{
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 500;
  letter-spacing: .15em;
  margin-bottom: 28px;
}
.reservation-text{
  font-size: 15px;
  line-height: 2;
  letter-spacing: .1em;
  margin-bottom: 48px;
  opacity: .92;
}
.reservation-buttons{
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.reservation .btn-outline{
  background: rgba(255,255,255,.06);
  color: #fff;
  border-color: var(--color-gold);
}
.reservation .btn-outline:hover{
  background: var(--color-gold);
  border-color: var(--color-gold);
}

/* ==========================================================
   Footer
   ========================================================== */
.site-footer{
  background: var(--color-text);
  color: #d8cfbd;
  padding: 48px 0 32px;
  text-align: center;
}
.footer-inner{
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
}
.footer-logo{
  font-size: 15px;
  letter-spacing: .12em;
  line-height: 1.6;
}
.footer-logo span{
  display: block;
  font-family: var(--font-en);
  font-size: 12px;
  color: var(--color-gold);
  letter-spacing: .25em;
  margin-top: 4px;
}
.footer-link a{
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--color-gold);
}
.footer-copy{
  font-size: 11px;
  letter-spacing: .12em;
  opacity: .6;
  margin-top: 8px;
}

/* ==========================================================
   Section CTA (per-section reservation button)
   ========================================================== */
.section-cta{
  display: flex;
  justify-content: center;
  margin-top: 64px;
}
.cta-link{
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 20px 44px;
  background: transparent;
  border: 1.5px solid var(--color-gold);
  color: var(--color-wood-dark);
  font-size: 15px;
  letter-spacing: .14em;
  border-radius: var(--radius);
  transition: all .4s var(--ease);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.cta-link::before{
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .45s var(--ease);
  z-index: 0;
}
.cta-link:hover{
  color: #fff;
  border-color: var(--color-gold-dark);
  opacity: 1;
  box-shadow: 0 10px 24px rgba(201, 169, 106, .35);
}
.cta-link:hover::before{
  transform: scaleX(1);
}
.cta-en,
.cta-jp,
.cta-arrow{
  position: relative;
  z-index: 1;
  transition: color .35s var(--ease);
}
.cta-en{
  font-family: var(--font-en);
  font-size: 12.5px;
  letter-spacing: .28em;
  color: var(--color-gold-dark);
  text-transform: uppercase;
}
.cta-link:hover .cta-en{
  color: rgba(255,255,255,.9);
}
.cta-jp{
  font-weight: 600;
  letter-spacing: .12em;
}
.cta-arrow{
  font-family: var(--font-en);
  font-size: 18px;
  transition: transform .35s var(--ease), color .35s var(--ease);
}
.cta-link:hover .cta-arrow{
  transform: translateX(4px);
}

/* CTA color variation for dark-bg sections (reservation contrasting) */
.reservation .section-cta .cta-link{
  border-color: rgba(255,255,255,.5);
  color: #fff;
}

/* ==========================================================
   Scroll Animations
   ========================================================== */
[data-animate]{
  opacity: 0;
  transition: opacity .9s var(--ease), transform .9s var(--ease);
  will-change: opacity, transform;
}
[data-animate="fade-up"]    { transform: translateY(32px); }
[data-animate="fade-right"] { transform: translateX(-32px); }
[data-animate="fade-left"]  { transform: translateX(32px); }
[data-animate="fade-in"]    { transform: none; }

[data-animate].is-visible{
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce){
  [data-animate]{
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-image{ animation: none; }
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 960px){
  .structure-parts{
    grid-template-columns: 1fr;
    gap: 18px;
    max-width: 620px;
    margin-inline: auto;
  }
}

@media (max-width: 880px){
  .info-wrap{ grid-template-columns: 1fr; gap: 36px; }
  .info-map{ min-height: 320px; }
  .info-map iframe{ min-height: 320px; }
}

@media (max-width: 768px){

  /* Header */
  .menu-toggle{ display: block; z-index: 110; }
  .global-nav{
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    z-index: 105;
  }
  .global-nav.is-open{ transform: translateX(0); }
  .global-nav ul{
    flex-direction: column;
    gap: 28px;
    text-align: center;
  }
  .global-nav a{
    font-size: 16px;
    letter-spacing: .18em;
  }
  .nav-cta{
    display: inline-block;
    padding: 14px 32px;
  }

  /* Hero */
  .hero{ padding: 90px 0 90px; }
  .hero-title{ line-height: 1.6; }
  .hero-lead{ margin-bottom: 14px; }
  .hero-tagline{ margin-bottom: 24px; }
  .hero-features{ gap: 8px 8px; margin-bottom: 30px; }
  .hero-features li{
    font-size: 11.5px;
    padding: 7px 14px;
    letter-spacing: .04em;
  }
  .hero-scroll{ bottom: 20px; }
  .hero-scroll-line{ height: 36px; }

  /* Sections */
  .concept,
  .features,
  .doctor,
  .cases,
  .menu,
  .faq,
  .info,
  .reservation{ padding: 80px 0; }

  /* Case study: stack cards */
  .cases-grid{
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 520px;
    margin-inline: auto;
  }
  .case-images{ padding: 14px 14px 0; gap: 8px; }
  .case-xray{ padding: 0 14px 12px; gap: 6px; }
  .case-info{ padding: 20px 20px 22px; }
  .case-title{ font-size: 16px; }
  .case-row{ grid-template-columns: 80px 1fr; gap: 10px; font-size: 12.5px; }
  .case-row dt{ font-size: 11px; }
  .case-label{ font-size: 10px; padding: 3px 9px; }
  .case-arrow{ font-size: 18px; }

  /* Features grid → single column on mobile */
  .features-grid{
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 50px;
  }
  .feat-card{ padding: 30px 22px 24px; }

  /* Doctor: stack photo and info */
  .doctor-motto{ margin-bottom: 40px; }
  .doctor-wrap{
    grid-template-columns: 1fr;
    gap: 32px;
    max-width: 520px;
  }
  .doctor-photo img{ height: 400px; }
  .doctor-name{ font-size: 22px; margin-bottom: 24px; padding-bottom: 16px; }

  /* Doctor details - stack on mobile */
  .doctor-details{
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 48px;
  }
  .detail-block{ padding: 24px 22px 22px; }
  .label-jp{ font-size: 15px; }
  .career-item{ grid-template-columns: 90px 1fr; gap: 14px; }
  .career-item dt{ font-size: 11.5px; }
  .career-item dd{ font-size: 13.5px; }
  .qual-list li{ font-size: 13.5px; }

  /* FAQ */
  .faq-item summary{ padding: 18px 20px; gap: 14px; }
  .faq-q, .faq-a{ width: 32px; height: 32px; font-size: 15px; }
  .faq-question{ font-size: 14.5px; }
  .faq-answer{ padding: 18px 20px 20px; gap: 14px; }
  .faq-answer p{ font-size: 13.5px; }

  /* Structure */
  .structure-figure{ padding: 16px; }
  .structure-figure::before,
  .structure-figure::after{ width: 36px; height: 36px; }
  .part-card{ padding: 22px 22px 20px; }
  .part-num{ width: 42px; height: 42px; font-size: 17px; }
  .part-name{ font-size: 17px; }

  /* Concept */
  .concept-features{
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .feature-card{ padding: 40px 24px 28px; }
  .feature-number{ font-size: 30px; top: 14px; right: 18px; }
  .concept-figure figcaption{
    left: 16px; bottom: 16px;
    padding: 10px 16px;
    max-width: calc(100% - 32px);
  }
  .figure-en{ font-size: 11px; }
  .figure-jp{ font-size: 12.5px; }
  .concept-figure::before,
  .concept-figure::after{
    width: 60px; height: 60px;
  }

  /* Menu */
  .menu-item{ padding: 26px 22px; }
  .menu-item-head{
    flex-direction: column;
    gap: 6px;
  }
  .menu-name{ font-size: 17px; }
  .price-num{ font-size: 22px; }

  /* Info Blocks */
  .info-block{
    padding: 32px 24px;
    margin-top: 40px;
  }
  .block-head{ margin-bottom: 24px; }
  .block-text{ font-size: 14px; }
  .payment-list li{ padding: 14px 18px; gap: 12px; }
  .payment-name{ font-size: 14.5px; }
  .payment-desc{ font-size: 12.5px; }
  .payment-note{ padding: 16px 18px; font-size: 12.5px; }

  /* Section CTA */
  .section-cta{ margin-top: 48px; }
  .cta-link{
    flex-direction: column;
    gap: 4px;
    padding: 16px 32px;
    width: 100%;
    max-width: 320px;
    text-align: center;
  }
  .cta-arrow{ display: none; }
  .cta-en{ font-size: 11px; letter-spacing: .22em; }
  .cta-jp{ font-size: 14.5px; }

  /* Brand Block */
  .brand-block{ padding: 32px 22px; }
  .brand-flex{
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .brand-badge{
    flex-direction: row;
    gap: 14px;
    padding: 18px 24px;
    justify-content: center;
  }
  .brand-rank-label{ margin-bottom: 0; font-size: 11px; }
  .brand-rank-num{ font-size: 22px; }
  .brand-rank-num em{ font-size: 44px; }
  .brand-rank-jp{
    margin: 0;
    padding: 0 0 0 14px;
    border-top: 0;
    border-left: 1px solid rgba(255,255,255,.35);
    font-size: 12px;
  }
  .brand-title{ font-size: 17px; }
  .brand-text{ font-size: 13.5px; }

  /* Info */
  .info-row{
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 18px 4px;
  }
  .info-row dt{ font-size: 12.5px; }

  /* Reservation */
  .reservation-buttons{
    flex-direction: column;
    gap: 16px;
    align-items: center;
  }
  .btn{ width: 100%; max-width: 320px; }
}

@media (max-width: 480px){
  .container{ padding-inline: 18px; }
  .hero-title{ letter-spacing: .06em; }
  .section-head{ margin-bottom: 40px; }
  .concept-catch{ letter-spacing: .08em; }
  .menu-item{ padding: 22px 18px; }
  .feature-card{ padding: 36px 20px 24px; }

  /* Header logo - compact on small screens */
  .site-logo a{ gap: 9px; }
  .logo-mark{ width: 36px; height: 36px; }
  .logo-jp{ font-size: 13px; letter-spacing: .04em; }
  .logo-sub{ font-size: 9.5px; letter-spacing: .08em; margin-top: 2px; }
  .header-inner{ padding: 12px 18px; }
}