:root{
  --bg:#0b0d10; --panel:#12161b; --ink:#f2f5f7; --muted:#9aa6b2;
  --line:#222a32; --accent:#e6ff3a; --accent2:#37e6a4; --beet:#e0457b;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
a{color:inherit;text-decoration:none}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(11,13,16,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:900;letter-spacing:.14em;font-size:18px}
.logo span{color:var(--accent)}
.navrow{display:flex;align-items:center;gap:14px}
.langtoggle{font-size:12px;font-weight:700;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:6px 12px;cursor:pointer}
.langtoggle:hover{color:var(--ink);border-color:var(--accent2)}
.navcta{font-size:13px;font-weight:700;border:1px solid var(--accent);color:var(--accent);padding:8px 16px;border-radius:999px}

/* hero */
.hero{position:relative;padding:90px 0 80px;overflow:hidden;border-bottom:1px solid var(--line)}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(900px 420px at 80% -10%,rgba(55,230,164,.16),transparent),radial-gradient(700px 380px at 0% 110%,rgba(224,69,123,.14),transparent)}
.hero .wrap{position:relative}
.kicker{display:inline-block;font-size:12px;letter-spacing:.24em;color:var(--accent2);font-weight:800;border:1px solid var(--line);border-radius:999px;padding:6px 14px;margin-bottom:22px}
h1{font-size:clamp(38px,7.6vw,80px);line-height:1.02;font-weight:900;letter-spacing:-.01em}
h1 em{font-style:normal;color:var(--accent)}
.sub{margin-top:22px;font-size:clamp(16px,2.4vw,20px);color:var(--muted);max-width:560px}
.herobtns{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;font-weight:800;border-radius:999px;padding:15px 30px;font-size:15px;transition:.15s;cursor:pointer}
.btn-primary{background:var(--accent);color:#0b0d10}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{border:1px solid var(--line);color:var(--ink)}
.badge-dev{display:inline-block;margin-top:26px;font-size:12px;color:var(--muted);letter-spacing:.1em}
.badge-dev b{color:var(--accent)}

/* sections */
section{padding:84px 0;border-bottom:1px solid var(--line)}
.eyebrow{font-size:12px;letter-spacing:.24em;color:var(--accent2);font-weight:800;margin-bottom:16px}
h2{font-size:clamp(28px,5vw,46px);font-weight:900;line-height:1.1;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:17px;margin-top:18px;max-width:640px}

.grid{display:grid;gap:18px;margin-top:44px}
.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:820px){.g3{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px}
.card h3{font-size:19px;font-weight:800;margin-bottom:8px}
.card p{color:var(--muted);font-size:14.5px}
.card .ic{font-size:26px;margin-bottom:14px}

/* product lineup */
.lineup{display:grid;gap:22px;margin-top:46px;grid-template-columns:repeat(3,1fr)}
@media(max-width:880px){.lineup{grid-template-columns:1fr;max-width:460px;margin-left:auto;margin-right:auto}}
.prod{background:var(--panel);border:1px solid var(--line);border-radius:22px;overflow:hidden;display:flex;flex-direction:column;transition:.15s}
.prod:hover{transform:translateY(-3px);border-color:var(--c)}
.pouchtop{position:relative;padding:30px 24px 26px;background:linear-gradient(165deg,#161b21,#0e1216);border-bottom:1px solid var(--line)}
.pouchtop:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--c)}
.pgram{position:absolute;top:18px;right:18px;font-size:11px;font-weight:800;letter-spacing:.12em;color:#0b0d10;background:var(--c);border-radius:999px;padding:4px 10px}
.pname{font-weight:900;font-size:15px;letter-spacing:.14em;color:var(--muted)}
.pname b{display:block;font-size:30px;letter-spacing:.04em;color:var(--c);margin-top:2px}
.ptag{margin-top:12px;font-size:13.5px;color:var(--ink);font-weight:700}
.pwhen{margin-top:4px;font-size:12.5px;color:var(--muted)}
.pbody{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.formula{list-style:none;margin:0 0 16px}
.formula li{display:flex;justify-content:space-between;gap:10px;font-size:14px;padding:9px 0;border-bottom:1px dashed var(--line)}
.formula li:last-child{border-bottom:0}
.formula .amt{color:var(--c);font-weight:800;white-space:nowrap}
.pserv{font-size:12px;color:var(--muted);letter-spacing:.06em;margin-top:auto}
.pserv b{color:var(--ink)}
.pgoal{font-size:13.5px;color:var(--muted);background:#0e1217;border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:16px}

/* choose helper (BJJ persona: which one do I buy?) */
.choose{display:grid;gap:14px;grid-template-columns:repeat(3,1fr);margin-top:36px}
@media(max-width:760px){.choose{grid-template-columns:1fr}}
.choose .card{padding:22px}
.choose .q{font-size:13px;color:var(--accent2);font-weight:800;margin-bottom:6px}
.choose .a{font-size:18px;font-weight:900}
.choose .a span{color:var(--c)}

/* honest science */
.sci{display:grid;gap:16px;grid-template-columns:repeat(3,1fr);margin-top:40px}
@media(max-width:760px){.sci{grid-template-columns:1fr}}
.sci .card h3{font-size:16px}
.sci .tag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.08em;padding:3px 9px;border-radius:999px;margin-bottom:10px}
.tag.yes{color:#0b0d10;background:var(--accent2)}
.tag.slow{color:#0b0d10;background:var(--accent)}
.tag.no{color:#fff;background:#3a4350}

/* trust strip (BJJ persona: is this legit / safe?) */
.trust{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.trust .t{flex:1;min-width:200px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.trust .t b{display:block;font-size:14px;margin-bottom:4px}
.trust .t span{color:var(--muted);font-size:13px}

/* signup */
.signup{background:linear-gradient(160deg,#0e1217,#0b0d10)}
.form{display:flex;gap:12px;margin-top:28px;max-width:520px;flex-wrap:wrap}
.form input{flex:1;min-width:220px;background:#0b0d10;border:1px solid var(--line);color:var(--ink);padding:15px 18px;border-radius:12px;font-size:15px}
.form input:focus{outline:none;border-color:var(--accent)}
.form button{border:0}
.ok{display:none;margin-top:18px;color:var(--accent2);font-weight:700}
.fineprint{color:#6b7682;font-size:12px;margin-top:18px;max-width:620px;line-height:1.6}

footer{padding:56px 0;color:#6b7682;font-size:13px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}
.pill{display:inline-block;font-size:11px;letter-spacing:.14em;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:4px 12px;margin-right:8px}

.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* voice player (KOE 本人声) */
.vplayer{margin-top:40px;background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px;max-width:560px}
.vp-head{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.vp-av{width:62px;height:62px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:30px;background:#0e1217;border:1px solid var(--line);transition:.2s}
.vp-av.on{box-shadow:0 0 0 3px var(--c,#37e6a4);border-color:var(--c,#37e6a4)}
.vp-who{font-weight:900;font-size:18px}
.vp-cap{color:var(--muted);font-size:15px;margin-top:3px;line-height:1.5;min-height:22px}
.vp-cap.live{color:var(--ink)}
.vp-dots{display:flex;gap:7px;margin-top:18px;flex-wrap:wrap}
.vp-dots i{width:9px;height:9px;border-radius:50%;background:#2a333c;transition:.2s}
.vp-dots i.on{background:var(--accent)}
.vp-dots i.done{background:var(--accent2)}

/* ===== emotional visuals (image-forward) ===== */
/* hero image */
.hero-img{padding:0;min-height:86vh;display:flex;align-items:flex-end;position:relative;overflow:hidden}
.hero-img::before{display:none}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center 30%;z-index:0;transform:scale(1.02)}
.hero-shade{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(8,10,14,.5),rgba(8,10,14,.15) 38%,rgba(8,10,14,.94))}
.hero-in{position:relative;z-index:2;padding:0 24px 72px;width:100%;max-width:1080px;margin:0 auto}
.hero-img h1{text-shadow:0 4px 34px rgba(0,0,0,.7)}
.hero-img .sub{color:#d6dde4}
@media(min-width:900px){.hero-img{min-height:92vh}}

/* full-bleed image bands */
.band{position:relative;min-height:60vh;display:flex;align-items:center;background-size:cover;background-position:center;border-bottom:1px solid var(--line);padding:0;overflow:hidden}
.band-shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,10,14,.94),rgba(8,10,14,.66) 48%,rgba(8,10,14,.32))}
.band-pour .band-shade{background:linear-gradient(90deg,rgba(8,10,14,.36),rgba(8,10,14,.74) 55%,rgba(8,10,14,.94))}
.band-in{position:relative;z-index:2;padding:70px 24px;width:100%;max-width:1080px;margin:0 auto}
.band-pour .band-in{text-align:right}
.band-pour .lead{margin-left:auto}
.band h2{text-shadow:0 3px 22px rgba(0,0,0,.6)}

/* flip cards: front = feeling/photo, back = science */
.flip{perspective:1400px;cursor:pointer;min-height:448px}
.flip-inner{position:relative;width:100%;height:100%;min-height:448px;transition:transform .6s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}
.flip.flipped .flip-inner{transform:rotateY(180deg)}
.flip-face{position:absolute;inset:0;border-radius:22px;overflow:hidden;-webkit-backface-visibility:hidden;backface-visibility:hidden;border:1px solid var(--line)}
.flip-front{background-size:cover;background-position:center;display:flex}
.ff-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,10,14,.12),rgba(8,10,14,.9))}
.ff-in{position:relative;z-index:2;margin-top:auto;padding:24px;width:100%}
.ff-in .pgram{position:static;display:inline-block;margin-bottom:14px}
.ff-ttl{font-weight:900;font-size:25px;line-height:1.18;text-shadow:0 3px 18px rgba(0,0,0,.7)}
.ff-hint{margin-top:16px;font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--c)}
.flip:hover .ff-hint{text-decoration:underline}
.flip-back{transform:rotateY(180deg);background:var(--panel);padding:26px 24px;display:flex;flex-direction:column}
.flip-back::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--c)}
.flip-back .ptag{margin-bottom:14px}
.flip-back .pserv{margin-top:auto;padding-top:8px}

/* product shots (粉版 / パウチ版) */
.prodshots{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:42px}
@media(max-width:760px){.prodshots{grid-template-columns:1fr}}
.shot{margin:0;background:var(--panel);border:1px solid var(--line);border-radius:20px;overflow:hidden}
.shot img{display:block;width:100%;height:auto}
.shot figcaption{padding:16px 18px;font-size:13.5px;color:var(--muted);line-height:1.6}
.shot figcaption b{color:var(--ink);font-weight:800}

.subh{margin-top:46px;font-size:clamp(20px,3vw,28px);font-weight:900;letter-spacing:-.01em}
.g3shots{grid-template-columns:repeat(3,1fr)}
@media(max-width:760px){.g3shots{grid-template-columns:1fr}}

/* bg images & accent colors via classes (strict CSP: no inline style attrs) */
.hero-bg{background-image:url('/img/hero.jpg')}
.band-why{background-image:url('/img/ignite.jpg')}
.band-kit{background-image:url('/img/kit.jpg')}
.band-pour{background-image:url('/img/pour.jpg')}
.ff-repair{background-image:url('/img/repair.jpg')}
.ff-ignite{background-image:url('/img/ignite.jpg')}
.ff-base{background-image:url('/img/base.jpg')}
.c-green{--c:var(--accent2)}
.c-yellow{--c:var(--accent)}
.c-beet{--c:var(--beet)}
.mt14{margin-top:14px}
.tar{text-align:right}

/* recipe cards */
.rc-name{font-size:18px;font-weight:900;color:var(--c,#37e6a4);margin-bottom:10px;letter-spacing:.04em}
.rc-how{color:var(--muted);font-size:13px;margin-top:12px;line-height:1.6}
/* story (kamishibai) link cards */
.storycard{display:flex;flex-direction:column;transition:.15s}
.storycard:hover{transform:translateY(-3px);border-color:var(--accent)}
.storycard .slink{margin-top:auto;padding-top:12px;color:var(--accent);font-weight:800;font-size:14px}