:root{
  --bg:#F5F8FA; --surface:#FFFFFF; --ink:#14263F; --muted:#51647C;
  --indigo:#1B3A63; --sakura:#F2B8C4; --sakura-ink:#8A2E48; --mint:#CFE8E1; --mint-ink:#1F5C50; --line:#D9E2EA;
  --hero:#1B3A63; --hero-ink:#F5F8FA;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0F1B2D; --surface:#17283F; --ink:#E9EFF5; --muted:#A3B3C6; --indigo:#8FB1E0;
  --sakura:#5A2A3A; --sakura-ink:#F6C6D1; --mint:#1D4A42; --mint-ink:#BFE6DC; --line:#2A3E58; --hero:#0B1626; --hero-ink:#E9EFF5;}}
:root[data-theme="dark"]{
  --bg:#0F1B2D; --surface:#17283F; --ink:#E9EFF5; --muted:#A3B3C6; --indigo:#8FB1E0;
  --sakura:#5A2A3A; --sakura-ink:#F6C6D1; --mint:#1D4A42; --mint-ink:#BFE6DC; --line:#2A3E58; --hero:#0B1626; --hero-ink:#E9EFF5;}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(72px + env(safe-area-inset-top,0px))}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 "Noto Sans JP","Noto Sans",system-ui,sans-serif}
h1,h2,h3{font-family:"Zen Maru Gothic","Noto Sans JP",system-ui,sans-serif;line-height:1.2;margin:0}
a{color:inherit}
:focus-visible{outline:3px solid var(--sakura-ink);outline-offset:3px;border-radius:6px}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
section{padding:72px 0}
h2{font-size:clamp(1.7rem,4vw,2.3rem);font-weight:900;color:var(--indigo);margin-bottom:14px}
.lead{max-width:62ch;color:var(--muted);margin:0 0 32px}
/* nav */
header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font:900 1.15rem "Zen Maru Gothic",sans-serif;text-decoration:none;color:var(--indigo);display:flex;align-items:center;gap:10px}
.brand b{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--sakura);color:var(--sakura-ink);font-size:1rem}
nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
nav a{display:block;padding:8px 12px;border-radius:999px;text-decoration:none;font-size:.95rem;font-weight:500;color:var(--muted)}
nav a:hover{background:var(--mint);color:var(--mint-ink)}
#menuBtn{display:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:8px 14px;font:inherit;cursor:pointer}
@media (max-width:820px){
  #menuBtn{display:block}
  nav ul{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;background:var(--bg);padding:10px 20px 18px;border-bottom:1px solid var(--line)}
  nav ul.open{display:flex}
}
/* hero */
.hero{background:var(--hero);color:var(--hero-ink);position:relative;overflow:hidden;padding:84px 0 76px}
.hero .kanji{position:absolute;right:-10px;top:-30px;font:900 clamp(12rem,32vw,24rem)/1 "Zen Maru Gothic",serif;color:var(--hero-ink);opacity:.07;user-select:none;pointer-events:none}
.hero h1{font-size:clamp(2.2rem,6.4vw,4.2rem);font-weight:900;max-width:15ch;position:relative}
.hero p{max-width:56ch;font-size:1.1rem;margin:22px 0 30px;opacity:.9;position:relative}
.btns{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.btn{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:700;text-decoration:none;font-family:"Zen Maru Gothic",sans-serif}
.btn.p{background:var(--sakura);color:#5A1B2F}
.btn.s{border:2px solid currentColor}
.slogan{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.25);max-width:60ch;position:relative}
.slogan em{display:block;font:700 1.15rem "Zen Maru Gothic",sans-serif;font-style:normal}
.slogan span{opacity:.75;font-size:.95rem}
/* cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px}
.card h3{font-size:1.2rem;font-weight:700;color:var(--indigo);margin-bottom:8px}
.card p{margin:0;color:var(--muted);font-size:.98rem}
.card.mint{background:var(--mint);border-color:transparent}.card.mint h3,.card.mint p{color:var(--mint-ink)}
.card.pink{background:var(--sakura);border-color:transparent;border-radius:20px 20px 20px 4px}.card.pink h3,.card.pink p{color:var(--sakura-ink)}
.ja{font:700 .9rem "Noto Sans JP",sans-serif;color:var(--sakura-ink);display:inline-block;margin-bottom:6px}
ul.tick{list-style:none;padding:0;margin:0;display:grid;gap:10px}
ul.tick li{padding-left:30px;position:relative}
ul.tick li::before{content:"";position:absolute;left:0;top:.5em;width:16px;height:16px;border-radius:50%;background:var(--mint);box-shadow:inset 0 0 0 4px var(--mint-ink)}
.split{display:grid;gap:36px;grid-template-columns:1fr 1fr;align-items:start}
@media (max-width:820px){.split{grid-template-columns:1fr}section{padding:56px 0}}
.band{background:var(--surface);border-block:1px solid var(--line)}
/* steps */
ol.steps{list-style:none;margin:0;padding:0;display:grid;gap:0;counter-reset:s}
ol.steps li{display:grid;grid-template-columns:56px 1fr;gap:16px;padding-bottom:26px;position:relative}
ol.steps li::before{counter-increment:s;content:counter(s);width:44px;height:44px;border-radius:50%;background:var(--indigo);color:var(--bg);display:grid;place-items:center;font:900 1.1rem "Zen Maru Gothic",sans-serif;z-index:1}
ol.steps li:not(:last-child)::after{content:"";position:absolute;left:21px;top:44px;bottom:0;width:2px;background:var(--line)}
ol.steps h3{font-size:1.15rem;color:var(--indigo)}
ol.steps p{margin:2px 0 0;color:var(--muted);font-size:.98rem}
/* contact */
.todo{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.todo div{border:2px dashed var(--line);border-radius:14px;padding:14px 18px;color:var(--muted);font-size:.95rem}
.todo b{display:block;color:var(--ink);font-family:"Zen Maru Gothic",sans-serif}
/* gallery & wa */
.gal{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
.gal button{all:unset;cursor:zoom-in;display:block;position:relative;border-radius:20px;overflow:hidden;aspect-ratio:4/3;background:var(--line)}
.gal button:focus-visible{outline:3px solid var(--sakura-ink);outline-offset:3px}
.gal img{width:100%;height:100%;object-fit:cover;object-position:center 30%;display:block;transition:transform .3s}
.gal button:hover img{transform:scale(1.03)}
.gal span{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font:700 .95rem "Zen Maru Gothic",sans-serif;background:linear-gradient(transparent,rgba(10,20,35,.75))}
@media (max-width:560px){.gal{grid-template-columns:1fr}}
dialog{border:0;padding:0;background:transparent;max-width:min(94vw,900px);max-height:92vh;color:#fff}
dialog::backdrop{background:rgba(8,16,28,.85)}
dialog img{max-width:100%;max-height:82vh;display:block;margin:0 auto;border-radius:14px}
dialog p{text-align:center;margin:10px 0 0;font-weight:500}
dialog form{text-align:center;margin-top:8px}
dialog button{background:var(--sakura);color:#5A1B2F;border:0;border-radius:999px;padding:8px 22px;font:700 1rem "Zen Maru Gothic",sans-serif;cursor:pointer}
.btn.wa{background:#25D366;color:#073B1C}
nav a.cta{background:#25D366;color:#073B1C;font-weight:700}
nav a.cta:hover{background:#1FB958;color:#073B1C}
.wacard{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--mint);color:var(--mint-ink);border-radius:20px;padding:26px 28px;margin-bottom:22px}
.wacard h3{font-size:1.25rem;color:var(--mint-ink);margin-bottom:4px}.wacard p{margin:0}
.fab{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:20;display:flex;align-items:center;gap:8px;background:#25D366;color:#073B1C;border-radius:999px;padding:12px 18px;font:700 .95rem "Zen Maru Gothic",sans-serif;text-decoration:none;box-shadow:0 4px 16px rgba(0,0,0,.25)}
.fab svg{width:22px;height:22px;fill:currentColor}
@media (max-width:480px){.fab span{display:none}.fab{padding:14px}}
@media (prefers-reduced-motion:reduce){.gal img{transition:none}}
footer{background:var(--hero);color:var(--hero-ink);padding:36px 0;font-size:.92rem}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
footer small{opacity:.7}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}