/* Memki — memkiapp.com
   Organic design system. Do not invent values; every colour and size here is final.
   Tokens: cream #f5ead8 · card #fbf4e8 · tint #f0dfc7 · ink #2e2b25 · terracotta #c67139
           link/accent-800 #8c491a · sage #8fa073 · rule rgba(46,43,37,.16)
   Type:   Caprasimo (headings) · Figtree (body) · Zen Maru Gothic (the ツ mark)
           Japanese text uses a Mincho serif stack. */

*{box-sizing:border-box}
html,body{margin:0;background:#f5ead8}
body{color:#2e2b25;font-family:'Figtree',system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:#8c491a;text-decoration:none}
a:hover{color:#643312;text-decoration:underline;text-underline-offset:3px}
::selection{background:#f2d9c2}
.jp{font-family:'Hiragino Mincho ProN','Yu Mincho','Noto Serif JP',serif}
.tsu{font-family:'Zen Maru Gothic','Hiragino Maru Gothic ProN',sans-serif}
.wrap{max-width:960px;margin:0 auto;padding:0 24px}

/* header */
.site-head{position:sticky;top:0;z-index:20;background:rgba(245,234,216,.93);backdrop-filter:blur(8px);border-bottom:1.5px solid rgba(46,43,37,.16)}
.head-in{max-width:960px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;color:inherit}
.brand:hover{text-decoration:none}
.brand-mark{width:38px;height:38px;flex:none;border-radius:12px;background:#c67139;border:1.5px solid #2e2b25;box-shadow:3px 3px 0 #2e2b25;display:flex;align-items:center;justify-content:center;font-size:22px;line-height:1;color:#fff}
.brand-name{font-family:'Caprasimo',system-ui,sans-serif;font-size:21px;line-height:1}
.site-nav{flex:1;display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.site-nav a{min-height:40px;display:inline-flex;align-items:center;padding:0 13px;border-radius:999px;font-size:13.5px;font-weight:600;color:rgba(46,43,37,.78)}
.site-nav a:hover{background:#f0dfc7;color:#2e2b25;text-decoration:none}
.site-nav a[aria-current="page"]{background:#2e2b25;color:#f5ead8}
.lang{display:flex;padding:3px;gap:2px;border-radius:999px;border:1.5px solid #2e2b25;background:#f5ead8}
.lang a{min-width:42px;min-height:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.04em;color:rgba(46,43,37,.72)}
.lang a:hover{text-decoration:none;color:#2e2b25}
.lang a[aria-current="true"]{background:#2e2b25;color:#f5ead8}

/* back link on inner pages */
.back{margin:34px 0 0;min-height:40px;display:inline-flex;align-items:center;gap:8px;padding:0 15px 0 12px;border-radius:999px;border:1.5px solid #2e2b25;background:#f5ead8;color:#2e2b25;font-size:13.5px;font-weight:600}
.back:hover{background:#f0dfc7;text-decoration:none}

main{padding-bottom:90px}

/* hero */
.hero{padding:74px 0 10px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:44px;align-items:center}
.hero h1{font-family:'Caprasimo',system-ui,sans-serif;font-size:52px;line-height:1.05;margin:0;max-width:15ch;text-wrap:pretty}
.hero p{margin:20px 0 0;max-width:56ch;font-size:17px;line-height:1.65;color:rgba(46,43,37,.8);text-wrap:pretty}
.store-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.store{min-height:52px;display:inline-flex;align-items:center;padding:0 22px;border-radius:999px;border:1.5px solid #2e2b25;box-shadow:4px 5px 0 #2e2b25;font-family:'Caprasimo',system-ui,sans-serif;font-size:16px}
.store.primary{background:#c67139;color:#fff}
.store.ghost{background:#f5ead8;color:#2e2b25}

/* phone */
.phone{justify-self:center;width:296px;flex:none;animation:memkiRise .7s cubic-bezier(.2,.8,.25,1) both}
.phone-body{border-radius:46px;padding:11px;background:#2e2b25;box-shadow:8px 9px 0 rgba(46,43,37,.22);animation:memkiFloat 6.5s ease-in-out infinite;will-change:transform}
.phone-screen{border-radius:36px;background:#f5ead8;overflow:hidden;height:588px;display:flex;flex-direction:column;position:relative}
.status{height:34px;flex:none;display:flex;align-items:center;justify-content:space-between;padding:0 20px;font-size:11.5px;font-weight:700;color:rgba(46,43,37,.7)}
.battery{width:15px;height:8px;border-radius:2px;border:1.2px solid rgba(46,43,37,.6);display:block}
.deckbar{flex:none;padding:4px 18px 0;display:flex;align-items:center;gap:10px}
.deckbar .badge{width:26px;height:26px;flex:none;border-radius:8px;background:#f0dfc7;border:1.2px solid rgba(46,43,37,.35);display:flex;align-items:center;justify-content:center;font-size:13px}
.deckbar .name{flex:1;min-width:0;font-size:12.5px;font-weight:700;letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.counts{display:flex;gap:7px;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums}
.c-new{color:#8c491a}.c-lrn{color:#a8641f}.c-rev{color:#5f6d45}
.cardarea{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:14px 20px 0}
.stack{position:relative;width:100%;height:282px}
.sheet3{position:absolute;left:13px;right:-4px;top:12px;bottom:-4px;border-radius:26px;background:#e6d6bd;border:1.5px solid #2e2b25}
.sheet2{position:absolute;left:6px;right:2px;top:6px;bottom:2px;border-radius:26px;background:#f0e2ca;border:1.5px solid #2e2b25}
.sheet1{position:absolute;left:0;right:8px;top:0;bottom:8px;border-radius:26px;background:#fbf4e8;border:1.5px solid #2e2b25;box-shadow:4px 4px 0 rgba(46,43,37,.9);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:16px}
.word{font-size:52px;line-height:1.1}
.reading{font-size:15px;color:#8c491a}
.hr-s{width:52px;height:1.5px;background:rgba(46,43,37,.3)}
.meaning{font-size:19px;font-weight:600}
.chips{display:flex;gap:6px;margin-top:2px}
.chip-a{min-height:26px;display:inline-flex;align-items:center;gap:5px;padding:0 10px;border-radius:999px;border:1.2px solid #2e2b25;font-size:11.5px;font-weight:700}
.chip-b{min-height:26px;display:inline-flex;align-items:center;padding:0 10px;border-radius:999px;background:#f0dfc7;border:1px solid rgba(46,43,37,.24);font-size:11.5px;font-weight:600;color:rgba(46,43,37,.75)}
.grades{flex:none;padding:16px 18px 22px}
.grades-row{display:flex;gap:6px}
.grade{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:5px}
.grade span.ivl{font-size:10px;font-weight:700;letter-spacing:.03em;color:rgba(46,43,37,.6)}
.grade span.btn{width:100%;min-height:46px;display:flex;align-items:center;justify-content:center;border-radius:16px;border:1.5px solid #2e2b25;box-shadow:3px 3px 0 rgba(46,43,37,.9);font-size:13px;font-weight:700}
.g1{background:#fbf4e8;color:#2e2b25}
.g2{background:#f0dfc7;color:#2e2b25}
.g3{background:#c67139;color:#fff}
.g4{background:#8fa073;color:#fff}

@keyframes memkiFloat{0%,100%{transform:translateY(0) rotate(-.4deg)}50%{transform:translateY(-14px) rotate(.4deg)}}
@keyframes memkiRise{from{opacity:0;transform:translateY(34px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
@media (prefers-reduced-motion:reduce){.phone-body,.phone{animation:none!important}}
@media (max-width:900px){.hero{grid-template-columns:minmax(0,1fr);gap:34px}}
@media (max-width:560px){.hero h1{font-size:40px}}

/* features */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;padding:56px 0 0}
.feature{border-radius:24px;padding:22px 20px 24px;background:#fbf4e8;border:1.5px solid #2e2b25;box-shadow:5px 5px 0 #2e2b25}
.feature .k{display:flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:14px;background:#f0dfc7;border:1.5px solid #2e2b25;font-size:22px;line-height:1}
.feature h3{font-family:'Caprasimo',system-ui,sans-serif;font-size:20px;line-height:1.2;margin:16px 0 7px}
.feature p{margin:0;font-size:14.5px;line-height:1.6;color:rgba(46,43,37,.78);text-wrap:pretty}

/* sections */
section.block{padding:78px 0 0}
.kicker{font-size:11.5px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:rgba(46,43,37,.58)}
h2.title{font-family:'Caprasimo',system-ui,sans-serif;font-size:36px;line-height:1.12;margin:8px 0 4px}
.meta{margin:0 0 26px;font-size:13.5px;color:rgba(46,43,37,.62)}
.callout{border-radius:24px;padding:24px 22px;background:#f0dfc7;border:1.5px solid #2e2b25;box-shadow:5px 5px 0 #2e2b25;margin-bottom:26px}
.callout p{margin:0;font-size:15.5px;line-height:1.65}
.prose{display:flex;flex-direction:column;gap:22px;max-width:70ch}
.prose h3{font-family:'Caprasimo',system-ui,sans-serif;font-size:22px;margin:0 0 9px}
.prose p{margin:0;font-size:15.5px;line-height:1.7;color:rgba(46,43,37,.85);text-wrap:pretty}
.rows{display:flex;flex-direction:column;gap:12px;max-width:70ch;margin-bottom:22px}
.row{border-radius:18px;padding:16px 18px;background:#fbf4e8;border:1.5px solid rgba(46,43,37,.28)}
.row b{display:block;font-size:15px;margin-bottom:5px}
.row span{display:block;font-size:14.5px;line-height:1.6;color:rgba(46,43,37,.8)}
.faq{display:flex;flex-direction:column;gap:12px}
.qa{border-radius:20px;padding:19px 20px;background:#fbf4e8;border:1.5px solid #2e2b25;box-shadow:4px 4px 0 #2e2b25}
.qa b{display:block;font-family:'Caprasimo',system-ui,sans-serif;font-size:18px;line-height:1.25;margin-bottom:8px}
.qa span{display:block;font-size:15px;line-height:1.65;color:rgba(46,43,37,.82)}
.contact-card{border-radius:24px;padding:26px 24px;background:#fbf4e8;border:1.5px solid #2e2b25;box-shadow:5px 5px 0 #2e2b25;max-width:70ch}
.contact-card p{margin:0 0 18px;font-size:15.5px;line-height:1.7;color:rgba(46,43,37,.85)}
.mail{min-height:52px;display:inline-flex;align-items:center;gap:10px;padding:0 22px;border-radius:999px;background:#c67139;color:#fff;border:1.5px solid #2e2b25;box-shadow:4px 5px 0 #2e2b25;font-family:'Caprasimo',system-ui,sans-serif;font-size:16px}
.mail:hover{color:#fff;text-decoration:none;background:#b1622f}
.pub{margin:18px 0 0!important;font-size:14px;line-height:1.6;color:rgba(46,43,37,.7)}
.del-rows{display:flex;flex-direction:column;gap:12px;max-width:70ch}
.del-a{border-radius:20px;padding:19px 20px;background:#f0dfc7;border:1.5px solid #2e2b25;box-shadow:4px 4px 0 #2e2b25}
.del-b{border-radius:20px;padding:19px 20px;background:#fbf4e8;border:1.5px solid rgba(46,43,37,.28)}
.del-rows b{display:block;font-family:'Caprasimo',system-ui,sans-serif;font-size:18px;margin-bottom:7px}
.del-rows span{display:block;font-size:15px;line-height:1.65;color:rgba(46,43,37,.85)}
.lede{margin:0 0 20px;max-width:70ch;font-size:15.5px;line-height:1.7;color:rgba(46,43,37,.85)}

/* footer */
.site-foot{border-top:1.5px solid rgba(46,43,37,.16);background:#f0dfc7}
.foot-in{max-width:960px;margin:0 auto;padding:34px 24px 44px;display:flex;gap:26px;flex-wrap:wrap;justify-content:space-between}
.foot-in p{margin:0 0 10px;font-size:13.5px;line-height:1.65;color:rgba(46,43,37,.78)}
.foot-in p.copy{margin:0;color:rgba(46,43,37,.62)}
.foot-nav{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-start}
.foot-nav a{font-size:13.5px;font-weight:600;color:rgba(46,43,37,.78)}