:root{
  --ink:#24303F; --ink2:#4A5563; --paper:#FBF7F0; --hinoki:#EFE3CF; --wood:#C9A877;
  --accent:#D9822B; --accent-d:#B8681A; --line:#06C755; --line-d:#05A847; --rule:#E2D6C2;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans JP",sans-serif;color:var(--ink);background:var(--paper);line-height:1.85;font-size:16px;-webkit-font-smoothing:antialiased;padding-bottom:76px}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
section{padding:88px 0}
.eyebrow{font-size:12px;letter-spacing:.24em;color:var(--accent-d);font-weight:700;margin-bottom:10px}
h2{font-family:"Zen Old Mincho",serif;font-size:clamp(26px,4.2vw,38px);line-height:1.45;margin-bottom:24px;font-weight:700}
h3{font-size:18px;line-height:1.5;margin-bottom:8px}
.lead{color:var(--ink2);font-size:16px}
.mark{background:linear-gradient(transparent 62%,#F6D3A8 62%)}
.note{font-size:12px;color:#7A8290;line-height:1.7}

/* header */
header{position:sticky;top:0;z-index:20;background:rgba(251,247,240,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700;font-size:14px}
.brand img{width:44px;height:44px;object-fit:contain;mix-blend-mode:multiply}
.brand small{display:block;font-size:10px;color:var(--ink2);font-weight:500;letter-spacing:.08em}
.hbtn{background:var(--ink);color:#fff;text-decoration:none;font-size:13px;font-weight:700;padding:9px 16px;border-radius:999px;white-space:nowrap}

/* buttons */
.cta{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--line);color:#fff;text-decoration:none;font-weight:900;font-size:17px;padding:18px 34px;border-radius:999px;box-shadow:0 6px 0 var(--line-d);transition:transform .15s,box-shadow .15s}
.cta:hover{transform:translateY(2px);box-shadow:0 4px 0 var(--line-d)}
.cta svg{width:24px;height:24px;flex:none}
.cta-sub{font-size:13px;color:var(--ink2);margin-top:14px}

/* hero */
.hero{padding:0;background:var(--ink);color:#fff;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;min-height:620px}
.hero-copy{padding:72px 44px 72px max(20px,calc((100vw - 1080px)/2 + 20px));display:flex;flex-direction:column;justify-content:center}
.hero .tag{display:inline-block;border:1px solid rgba(255,255,255,.4);border-radius:999px;font-size:13px;padding:4px 14px;margin-bottom:22px;align-self:flex-start}
.hero h1{font-family:"Zen Old Mincho",serif;font-size:clamp(28px,3.5vw,44px);line-height:1.4;font-weight:700;margin-bottom:22px}
.hero h1 em{font-style:normal;color:#F3B26B}
.hero p.sub{color:#D5DBE3;font-size:16px;margin-bottom:28px}
.hero-photo{position:relative;min-height:100%}
.hero-photo img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:28% 40%}
.nw{display:inline-block}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:32px}
.kpi{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:12px 10px;text-align:center}
.kpi b{display:block;font-size:22px;color:#fff;line-height:1.3}
.kpi span{font-size:11px;color:#C3CBD6}
.hero .cta-sub{color:#C3CBD6}

/* problems */
.problems{background:#fff}
.plist{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:30px 0 40px}
.plist li{list-style:none;background:var(--paper);border:1px solid var(--rule);border-radius:12px;padding:18px 18px 18px 50px;position:relative;font-weight:500}
.plist li::before{content:"";position:absolute;left:18px;top:22px;width:18px;height:18px;border-radius:4px;border:2px solid var(--wood)}
.turn{text-align:center;font-family:"Zen Old Mincho",serif;font-size:clamp(22px,3.4vw,30px);line-height:1.6}
.turn small{display:block;font-family:"Noto Sans JP",sans-serif;font-size:14px;color:var(--ink2);margin-top:6px}

/* what */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:16px;aspect-ratio:4/3;object-fit:cover;width:100%}
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:22px}
.fact{background:#fff;border:1px solid var(--rule);border-radius:12px;padding:14px;text-align:center}
.fact b{display:block;font-size:20px}
.fact span{font-size:12px;color:var(--ink2)}

/* flow in clinic */
.flow-band{background:var(--hinoki)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:34px;counter-reset:s}
.step{background:#fff;padding:26px 22px;position:relative;border:1px solid var(--rule)}
.step:first-child{border-radius:14px 0 0 14px}
.step:last-child{border-radius:0 14px 14px 0}
.step.hl{background:var(--ink);color:#fff;border-color:var(--ink)}
.step .no{font-size:12px;letter-spacing:.2em;color:var(--accent-d);font-weight:700}
.step.hl .no{color:#F3B26B}
.step p{font-size:14px;color:var(--ink2)}
.step.hl p{color:#D5DBE3}
.menus{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.menu{background:#fff;border-radius:14px;padding:22px;border-top:4px solid var(--accent)}
.menu .price{font-size:13px;color:var(--accent-d);font-weight:700;margin-bottom:6px}

/* simulator */
.sim{background:var(--ink);color:#fff}
.sim .lead{color:#C3CBD6}
.sim-box{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:34px}
.ctrls{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:26px}
.ctrl{margin-bottom:22px}
.ctrl:last-child{margin-bottom:0}
.ctrl label{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;color:#D5DBE3}
.ctrl label output{font-weight:900;color:#fff;font-size:18px}
input[type=range]{width:100%;accent-color:var(--accent);height:28px}
.seg{display:grid;grid-template-columns:1fr 1fr;background:rgba(255,255,255,.08);border-radius:999px;padding:4px}
.seg button{border:0;background:transparent;color:#D5DBE3;font:inherit;font-size:14px;font-weight:700;padding:9px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed=true]{background:#fff;color:var(--ink)}
.result{background:#fff;color:var(--ink);border-radius:18px;padding:28px;display:flex;flex-direction:column}
.result .big{font-size:13px;color:var(--ink2)}
.result .big b{display:block;font-size:clamp(38px,6vw,52px);color:var(--ink);line-height:1.2;font-weight:900;letter-spacing:-.01em}
.rows{margin:18px 0;border-top:1px solid var(--rule)}
.rows div{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--rule);font-size:14px}
.rows div b{font-size:16px}
.payback{background:#FDF1E3;border-radius:12px;padding:14px 16px;font-weight:700;color:var(--accent-d);text-align:center}
.payback b{font-size:24px}
.sim .note{color:#9AA5B4;margin-top:18px}

/* reasons */
.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:30px}
.reason{background:#fff;border:1px solid var(--rule);border-radius:16px;padding:24px}
.reason .n{font-family:"Zen Old Mincho",serif;font-size:30px;color:var(--wood);line-height:1}
.reason p{font-size:14px;color:var(--ink2)}

/* trust */
.trust{background:#fff}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0}
.stat{border-left:3px solid var(--accent);padding:6px 0 6px 16px}
.stat b{display:block;font-size:26px;line-height:1.3}
.stat span{font-size:13px;color:var(--ink2)}
.visit{display:grid;grid-template-columns:1fr 1.2fr;gap:0;background:var(--paper);border-radius:18px;overflow:hidden;border:1px solid var(--rule)}
.visit img{height:100%;object-fit:cover}
.visit div{padding:30px}

/* pricing */
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px}
.plan{background:#fff;border:1px solid var(--rule);border-radius:18px;padding:28px;position:relative}
.plan.rec{border:2px solid var(--ink)}
.plan .badge{position:absolute;top:-13px;left:24px;background:var(--ink);color:#fff;font-size:12px;font-weight:700;padding:3px 12px;border-radius:999px}
.plan .yen{font-size:34px;font-weight:900;line-height:1.2;margin:8px 0}
.plan .yen small{font-size:14px;font-weight:500}
.plan ul{list-style:none;font-size:14px;color:var(--ink2);margin-top:12px}
.plan li{padding:4px 0 4px 20px;position:relative}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent-d);font-weight:900}
.multi{margin-top:18px;background:var(--ink);color:#fff;border-radius:18px;padding:26px 28px;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.multi h3{font-size:20px;margin:0}
.multi p{color:#D5DBE3;font-size:14px}
.trial{margin-top:14px;font-size:14px;color:var(--ink2);text-align:center}

/* process & faq */
.proc{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px;counter-reset:p}
.proc li{list-style:none;background:#fff;border-radius:14px;padding:18px;font-size:14px;border:1px solid var(--rule);counter-increment:p}
.proc li::before{content:"STEP " counter(p);display:block;font-size:11px;letter-spacing:.18em;color:var(--accent-d);font-weight:700;margin-bottom:4px}
.proc li b{display:block;font-size:15px}
details{background:#fff;border:1px solid var(--rule);border-radius:12px;margin-bottom:10px}
summary{cursor:pointer;padding:18px 48px 18px 20px;font-weight:700;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:22px;color:var(--accent-d)}
details[open] summary::after{content:"−"}
details p{padding:0 20px 18px;color:var(--ink2);font-size:15px}

/* final */
.final{background:linear-gradient(rgba(36,48,63,.82),rgba(36,48,63,.9)),url(../img/feet.jpg) center/cover;color:#fff;text-align:center}
.final h2{color:#fff}
.final p{color:#D5DBE3}
.final .cta-sub{color:#C3CBD6}
.howto{display:inline-block;text-align:left;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:16px 22px;margin:22px 0 30px;font-size:14px}
footer{background:#1B2430;color:#9AA5B4;font-size:12px;padding:30px 0;text-align:center}
footer a{color:#C3CBD6;margin:0 8px}

/* sticky mobile CTA */
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:30;background:rgba(255,255,255,.96);border-top:1px solid var(--rule);padding:10px 16px;display:flex;gap:10px;align-items:center;justify-content:center}
.sticky .cta{font-size:15px;padding:12px 22px;box-shadow:0 4px 0 var(--line-d);flex:1;max-width:460px}
.sticky span{font-size:12px;color:var(--ink2);line-height:1.4}

@media (max-width:860px){
  section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-photo{height:300px;order:-1}
  .hero-copy{padding:36px 20px 44px}
  .split,.sim-box,.visit{grid-template-columns:1fr;gap:24px}
  .visit img{height:220px}
  .plist,.plans{grid-template-columns:1fr}
  .steps,.menus,.reasons{grid-template-columns:1fr}
  .step:first-child{border-radius:14px 14px 0 0}
  .step:last-child{border-radius:0 0 14px 14px}
  .stats,.proc{grid-template-columns:repeat(2,1fr)}
  .cta{width:100%;padding:17px 20px}
  .hbtn{display:none}
  .sticky span{display:none}
}
@media (min-width:861px){.sticky{display:none}body{padding-bottom:0}}

/* index & cross links */
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px}
.tcard{background:#fff;border:1px solid var(--rule);border-radius:16px;overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.tcard:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(36,48,63,.12)}
.tcard img{aspect-ratio:4/3;object-fit:cover;width:100%}
.tcard div{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.tname{font-weight:900;font-size:16px;line-height:1.5}
.tdesc{font-size:13px;color:var(--ink2);margin:6px 0 12px;flex:1}
.tgo{font-size:13px;font-weight:700;color:var(--accent-d)}
.others{display:flex;flex-wrap:wrap;gap:10px}
.others a{border:1px solid var(--rule);background:var(--paper);border-radius:999px;padding:8px 16px;font-size:14px;text-decoration:none}
.others a:hover{border-color:var(--ink)}
@media (max-width:980px){.tgrid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.tgrid{grid-template-columns:1fr}}