:root{
  --ink:#171512; --ink-2:#2b2723; --paper:#f4efe6; --paper-2:#ebe4d6; --line:#d8cfbf;
  --amber:#8a5a2b; --gold:#b9974f; --red:#9a2f25; --mute:#6f675c;
  --serif:"Noto Serif JP","Noto Serif SC","Cormorant Garamond","Hiragino Mincho ProN","Yu Mincho",serif;
  --latin:"Cormorant Garamond","Noto Serif JP",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--serif);font-weight:300;line-height:1.9;letter-spacing:.02em;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:400;margin:0}
p{margin:0}

/* header */
.top{position:fixed;inset:0 0 auto 0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:14px 20px;mix-blend-mode:multiply}
.brand{display:flex;align-items:baseline;gap:8px}
.brand-kanji{font-size:22px;letter-spacing:.3em}
.brand-latin{font-family:var(--latin);font-size:12px;letter-spacing:.35em;color:var(--mute)}
.brand,.nav a,.lang{white-space:nowrap}
.nav{display:flex;gap:18px;align-items:center;font-size:13px;letter-spacing:.2em;flex-shrink:0}
.nav a{opacity:.8}
@media (max-width:600px){.nav{gap:12px}.nav a:not(.nav-cta){display:none}.brand-kanji{font-size:20px}}
.nav-cta{border-bottom:1px solid var(--ink);padding-bottom:2px;opacity:1}
.lang{background:none;border:1px solid var(--line);border-radius:999px;padding:3px 10px;font:inherit;font-size:12px;letter-spacing:.1em;cursor:pointer;color:var(--ink)}

/* hero */
.hero{position:relative;min-height:100svh;display:grid;align-items:end;padding:120px 20px 56px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(60% 45% at 78% 22%, rgba(185,151,79,.35), transparent 60%),
    radial-gradient(50% 40% at 15% 70%, rgba(138,90,43,.28), transparent 60%),
    linear-gradient(180deg,#f7f3ea 0%,#efe7d8 55%,#e6dccb 100%)}
.hero-bg::after{content:"";position:absolute;inset:0;background:
  repeating-linear-gradient(0deg,transparent 0 3px,rgba(23,21,18,.018) 3px 4px);pointer-events:none}
.hero-vert{position:absolute;right:22px;top:96px;writing-mode:vertical-rl;font-size:15px;letter-spacing:.5em;color:var(--mute)}
.hero-body{max-width:640px}
.eyebrow{font-size:12px;letter-spacing:.35em;color:var(--red);margin-bottom:18px}
.hero h1{font-size:clamp(30px,7vw,54px);line-height:1.45;letter-spacing:.06em;font-weight:400}
.lead{margin:22px 0 30px;max-width:520px;color:var(--ink-2);font-size:15px}
.btn{display:inline-block;background:var(--ink);color:var(--paper);padding:15px 30px;font:inherit;font-size:14px;letter-spacing:.25em;border:0;cursor:pointer;border-radius:2px}
.btn:hover{background:var(--amber)}
.btn-line{background:none;border:1px solid var(--ink);color:var(--ink);padding:11px 20px;font:inherit;font-size:13px;letter-spacing:.2em;cursor:pointer;border-radius:2px;width:100%}
.btn-line:hover{background:var(--ink);color:var(--paper)}

/* sections */
section{padding:88px 20px}
h2{display:flex;align-items:baseline;gap:14px;font-size:26px;letter-spacing:.3em;margin-bottom:40px}
h2 .num{font-size:12px;letter-spacing:.3em;color:var(--gold);border:1px solid var(--gold);border-radius:50%;width:28px;height:28px;display:inline-grid;place-items:center;line-height:1}

.cards{display:grid;gap:36px}
.card{display:grid;gap:10px}
.cup{aspect-ratio:4/5;border-radius:2px;position:relative;overflow:hidden;background:var(--paper-2)}
.cup::before{content:"";position:absolute;inset:0;background:radial-gradient(45% 35% at 50% 58%, var(--c1), transparent 70%),linear-gradient(180deg,rgba(255,255,255,.5),transparent 40%)}
.cup::after{content:"";position:absolute;left:50%;top:58%;width:46%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle at 40% 35%, var(--c2), var(--c3) 70%);box-shadow:0 18px 40px rgba(23,21,18,.18),inset 0 0 0 6px rgba(255,255,255,.35)}
.cup-rock{--c1:rgba(138,90,43,.55);--c2:#c98b4a;--c3:#5a2f14}
.cup-white{--c1:rgba(185,151,79,.45);--c2:#f2e2b8;--c3:#c9a961}
.cup-peel{--c1:rgba(154,47,37,.35);--c2:#e0873f;--c3:#7a3a16}
.origin{font-size:12px;letter-spacing:.3em;color:var(--mute);margin-top:6px}
.card h3{font-size:21px;letter-spacing:.12em}
.desc{font-size:14px;color:var(--ink-2)}
.price{font-family:var(--latin);font-size:24px;letter-spacing:.05em;margin:6px 0 4px}
.price span{font-size:12px;letter-spacing:.2em;color:var(--mute);margin-right:12px;font-family:var(--serif)}
.note{margin-top:34px;font-size:13px;color:var(--mute);max-width:640px}

.origin-sec{background:var(--ink);color:var(--paper)}
.origin-sec h2{color:var(--paper)}
.origin-grid{display:grid;gap:36px}
.origin-text p{font-size:15px;margin-bottom:18px;color:#e7e0d2}
.origin-list{list-style:none;margin:0;padding:0;border-top:1px solid #3a352e}
.origin-list li{display:grid;grid-template-columns:90px 1fr;gap:12px;padding:16px 0;border-bottom:1px solid #3a352e;font-size:14px}
.origin-list b{font-weight:400;letter-spacing:.2em;color:var(--gold)}
.origin-list span{color:#cfc6b5}

.trust-grid{display:grid;gap:26px}
.trust-grid h4{font-size:16px;letter-spacing:.15em;margin-bottom:6px;padding-left:14px;border-left:2px solid var(--gold)}
.trust-grid p{font-size:14px;color:var(--ink-2)}

.reserve{background:var(--paper-2)}
.res-lead{max-width:560px;margin:-16px 0 30px;font-size:14px;color:var(--ink-2)}
.form{display:grid;gap:18px;max-width:560px}
.form label{display:grid;gap:6px;font-size:13px;letter-spacing:.15em;color:var(--mute)}
.form input,.form select,.form textarea{font:inherit;font-size:16px;letter-spacing:.05em;padding:12px 14px;border:1px solid var(--line);background:#fff;border-radius:2px;color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--amber)}
fieldset{border:0;padding:0;margin:0;display:grid;gap:8px}
legend{font-size:13px;letter-spacing:.15em;color:var(--mute);margin-bottom:8px}
.form label.chk{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);padding:12px 14px;border-radius:2px;color:var(--ink);font-size:15px;letter-spacing:.05em}
.chk em{font-style:normal;font-family:var(--latin);color:var(--mute);font-size:14px}
.chk input{width:16px;height:16px;accent-color:var(--amber)}
.form-note{font-size:12px;color:var(--mute)}
.form-done{font-size:15px;color:var(--amber);border-top:1px solid var(--line);padding-top:14px}
.form.sent .btn,.form.sent .form-note{display:none}

.faq{padding-top:40px}
details{border-top:1px solid var(--line);padding:16px 0}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-size:15px;letter-spacing:.08em;list-style:none;display:flex;justify-content:space-between}
summary::after{content:"＋";color:var(--gold)}
details[open] summary::after{content:"－"}
details p{margin-top:10px;font-size:14px;color:var(--ink-2)}

.foot{padding:60px 20px 40px;text-align:center;font-size:13px;color:var(--mute);border-top:1px solid var(--line)}
.brand-foot{font-size:20px;letter-spacing:.3em;color:var(--ink);margin-bottom:6px}
.brand-foot span{font-family:var(--latin);font-size:12px;letter-spacing:.35em;color:var(--mute)}
.links{margin-top:14px}
.links a{border-bottom:1px solid var(--line)}

@media (min-width:860px){
  .top{padding:22px 48px}
  .hero{padding:140px 48px 80px}
  .hero-vert{right:64px;top:140px;font-size:17px}
  section{padding:120px 48px;max-width:1180px;margin:0 auto}
  .hero,.origin-sec,.reserve,.foot{max-width:none}
  .hero-body{margin-left:max(0px,calc((100% - 1084px)/2))}
  .origin-sec>*,.reserve>*{max-width:1084px;margin-left:auto;margin-right:auto}
  .cards{grid-template-columns:repeat(3,1fr);gap:40px}
  .origin-grid{grid-template-columns:1.2fr 1fr;gap:80px}
  .trust-grid{grid-template-columns:repeat(4,1fr);gap:40px}
}