/* ヨミチ LP — tokens follow app/src design tokens (see docs/handoff.md) */
:root{
  --bg:#eef1f6;--ink:#1f2733;--body:#4b5563;--muted:#76808f;--line:#eef1f5;--line2:#dde3ec;
  --blue:#5b9bd5;--link:#41739f;--gold:#e0b256;--green:#1f8a5b;--purple:#9b8cd4;--tsun:#b08a2e;--red:#d75049;
  --r-card:18px;--max:1104px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans JP","Hiragino Sans",system-ui,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--link)}a:hover{color:#2f5b83}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p{margin:0}
h2{font-size:clamp(26px,3.2vw,38px);font-weight:900;line-height:1.3;margin-top:14px}
.h2-sm{font-size:clamp(24px,2.5vw,30px)}
h3{font-weight:900}
.crow{width:34px;height:34px}

/* nav */
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 48px;max-width:calc(var(--max) + 96px);margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:20px;font-weight:900}
.nav-links{display:flex;gap:8px;font-size:13px;font-weight:700}
.nav-links a{padding:8px 14px;color:var(--body);text-decoration:none}
.btn{display:inline-block;border-radius:14px;padding:16px 30px;font-size:16px;font-weight:800;text-decoration:none;line-height:1.2}
.btn-dark{background:var(--ink);color:#fff;box-shadow:0 10px 24px -10px rgba(31,39,51,.5)}.btn-dark:hover{color:#fff;background:#2c3644}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line2);font-weight:700}.btn-ghost:hover{color:var(--ink);background:#f7f9fc}
.btn-sm{border-radius:999px;padding:10px 20px;font-size:13.5px}

/* hero */
.hero{max-width:var(--max);margin:0 auto;padding:48px 48px 0;display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:12.5px;font-weight:700;color:var(--link)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green)}
.hero h1{margin-top:20px;font-size:clamp(38px,5.2vw,62px);line-height:1.18;font-weight:900;letter-spacing:-.015em}
.hero h1 em{font-style:normal;color:var(--link)}
.lead{margin-top:22px;font-size:16.5px;line-height:1.9;color:var(--body);max-width:500px;text-wrap:pretty}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.note{margin-top:14px;font-size:12.5px;color:var(--muted);font-weight:600}
.hero-phone{width:330px;margin:20px 0 0 30px;transform:rotate(-3deg);position:relative;z-index:1;filter:drop-shadow(0 40px 40px rgba(31,39,51,.35))}

/* shelf */
.shelf{position:relative;background:#fff;border-top:1px solid var(--line);margin-top:60px}
.shelf-crow{position:absolute;left:calc(50% - 480px);top:-112px;width:130px;height:130px}
.c-tech{background:linear-gradient(160deg,#5b9bd5,#1f2733 260%)}.c-lit{background:linear-gradient(160deg,#9b8cd4,#3b2f6b 260%)}.c-biz{background:linear-gradient(160deg,#e0b256,#6b4d12 260%)}.c-sci{background:linear-gradient(160deg,#1f8a5b,#0d3b28 260%)}
.shelf-board{height:16px;background:linear-gradient(#e6eaf1,#d5dbe5);box-shadow:0 6px 12px -6px rgba(31,39,51,.25)}
.shelf-board.short{max-width:420px;margin:0 auto;height:12px;border-radius:2px}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;padding:36px 48px;font-size:13px;font-weight:700;color:var(--body)}
.chips span{background:var(--bg);border-radius:999px;padding:8px 16px}

/* sections */
.section{padding:90px 48px;max-width:var(--max);margin:0 auto}
.band-white{background:#fff;max-width:none}
.section-inner{max-width:var(--max);margin:0 auto}
.label-row{display:flex;align-items:center;gap:14px}
.label{background:var(--ink);color:#fff;border-radius:6px;padding:5px 12px;font-size:12px;font-weight:800;letter-spacing:.12em}
.label-light{background:#fff;color:var(--ink)}
.body{margin-top:16px;font-size:15px;line-height:1.9;color:var(--body)}

/* spines accordion */
.spines{display:flex;margin-top:34px;min-height:360px;height:360px}
.spine{flex:none;width:72px;margin-right:12px;border:0;border-radius:10px;color:#fff;writing-mode:vertical-rl;padding:24px 0;font:inherit;font-size:17px;font-weight:800;display:flex;align-items:center;justify-content:space-between;cursor:pointer;opacity:.82;box-shadow:inset -6px 0 12px -8px rgba(0,0,0,.35);transition:width .3s,opacity .3s}
.spine small{font-size:11px;opacity:.8}
.spine.is-open{width:92px;opacity:1}
.s-1{background:var(--blue)}.s-2{background:var(--ink)}.s-3{background:var(--green)}.s-4{background:var(--gold)}.s-5{background:var(--purple)}.s-6{background:var(--tsun)}
.panel{flex:0 0 0px;min-width:0;overflow:hidden;opacity:0;background:#fff;border-radius:16px;padding:32px 0;display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:28px;align-items:center;border:1px solid var(--line);box-shadow:0 24px 48px -28px rgba(31,39,51,.35);transition:flex .35s,opacity .25s,padding .35s}
.panel.is-open{flex:1 1 auto;opacity:1;padding:32px 36px;margin-right:12px}
.panel.is-open:last-child{margin-right:0}
.panel-text{min-width:0}
.tag{display:inline-block;border-radius:6px;padding:3px 10px;font-size:11.5px;font-weight:800;color:#fff}
.panel h3{font-size:26px;margin-top:12px;line-height:1.3}
.panel p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--body)}
.panel a{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;text-underline-offset:3px}
.panel-img{height:100%;overflow:hidden;border-radius:16px 16px 0 0;align-self:end;margin-bottom:-32px;box-shadow:0 20px 40px -20px rgba(31,39,51,.5)}
.panel-img img{width:150px}

/* dark band */
.band-dark{background:var(--ink);color:#fff;padding:90px 48px}
.band-inner{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:1fr 300px;gap:60px;align-items:center}
.band-dark h2{margin-top:16px}
.band-dark p{margin-top:20px;font-size:15.5px;line-height:2;color:rgba(255,255,255,.8);max-width:560px;text-wrap:pretty}
.band-dark p+p{margin-top:14px}
.crow-plate{width:260px;height:260px;border-radius:48px;background:var(--bg);display:flex;align-items:center;justify-content:center;justify-self:center;box-shadow:0 30px 60px -30px rgba(0,0,0,.6)}
.crow-plate .crow{width:200px;height:200px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:34px}
.step{position:relative;background:#fff;border-radius:var(--r-card);padding:36px 28px 30px;border:1px solid var(--line)}
.step small{font-size:12px;font-weight:800;color:var(--link);letter-spacing:.1em}
.step h3{font-size:22px;margin-top:8px}
.step p{margin-top:10px;font-size:14px;line-height:1.85;color:var(--body)}
.ribbon{position:absolute;top:-6px;right:26px;width:26px;height:64px;clip-path:polygon(0 0,100% 0,100% 100%,50% 82%,0 100%)}
.r-gold{background:var(--gold)}.r-blue{background:var(--blue)}.r-green{background:var(--green)}

/* two-col */
.two{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:34px}
.section-inner.two{margin-top:0;gap:48px}
.open-book{background:var(--bg);border-radius:24px;padding:36px;display:grid;grid-template-columns:1fr 170px;gap:22px;align-items:center}
.open-book small{font-size:12px;font-weight:800;color:var(--link);letter-spacing:.1em}
.open-book h3{font-size:26px;margin-top:8px;line-height:1.3}
.open-book p{margin-top:12px;font-size:13.5px;line-height:1.8;color:var(--body)}
.open-book img{width:170px;filter:drop-shadow(0 20px 20px rgba(31,39,51,.3))}
.open-book a{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;text-underline-offset:3px}
.mini-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.mini-chips span{background:#fff;border-radius:999px;padding:4px 10px;font-size:11.5px;font-weight:700}
.mini-chips.outline{gap:8px;margin-top:20px}
.mini-chips.outline span{border:1px solid var(--line);padding:6px 12px;font-size:12px}
.mini-chips .g{color:var(--green)}.mini-chips .b{color:var(--link)}.mini-chips .y{color:var(--tsun)}

/* stats */
.stats{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.phones{display:flex;gap:18px;justify-content:center;align-items:flex-start}
.phones img{width:230px;filter:drop-shadow(0 30px 30px rgba(31,39,51,.3))}
.phones .lift{margin-top:40px}

/* changelog / faq */
.news{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.news-card{background:var(--bg);border-radius:16px;padding:16px 18px}
.news-meta{display:flex;gap:8px;align-items:center;font-size:11.5px;font-weight:800}
.news-meta code{font-family:ui-monospace,Menlo,monospace;color:var(--muted)}
.kind{border-radius:6px;padding:3px 8px}.kind-up{background:rgba(91,155,213,.18);color:var(--link)}.kind-bug{background:rgba(215,80,73,.14);color:#b3372f}
.news-card h4{font-size:15px;font-weight:800;margin-top:8px}
.news-card p{font-size:12.5px;color:var(--body);margin-top:3px;line-height:1.7}
.more{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;text-underline-offset:3px}
.faq{margin-top:24px;border-bottom:1px solid var(--line)}
.faq details{border-top:1px solid var(--line);padding:16px 0}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;font-size:15px;font-weight:800}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq p{font-size:13px;color:var(--body);line-height:1.75;margin-top:8px}
.contact{margin-top:22px;background:var(--bg);border-radius:16px;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:16px}
.contact b{display:block;font-size:14px;font-weight:800}.contact small{font-size:12.5px;color:var(--muted)}
.contact .btn{border-radius:10px;padding:10px 16px;font-size:13px;color:var(--link)}

/* cta / footer */
.cta{padding:90px 48px 36px;text-align:center}
.mini-shelf{display:flex;gap:10px;justify-content:center;align-items:flex-end;opacity:.9}
.mini-shelf i{display:block;width:56px;aspect-ratio:1/1.42;border-radius:5px;box-shadow:0 8px 14px -8px rgba(31,39,51,.5)}
.cta h2{margin-top:36px}
.cta .btn{margin-top:26px;padding:18px 36px}
.foot-links{margin-top:64px;display:flex;flex-wrap:wrap;justify-content:center;gap:24px;font-size:12.5px;font-weight:600}
.foot-links a{color:var(--muted);text-decoration:none}
.copyright{border-top:1px solid var(--line2);padding:16px 48px;text-align:center;font-size:11.5px;color:var(--muted);font-weight:600}

/* ---------- tablet: vertical accordion, keep desktop rest ---------- */
@media (max-width: 1150px){
  .spines{flex-direction:column;height:auto;gap:8px}
  .spine{writing-mode:horizontal-tb;width:auto;margin:0;padding:14px 18px;border-radius:8px;font-size:15px;flex-direction:row;box-shadow:inset 0 -5px 10px -8px rgba(0,0,0,.35)}
  .spine.is-open{width:auto}
  .panel{flex:none;grid-template-columns:minmax(0,1fr) 150px;gap:24px;padding:0 28px;max-height:0;border-width:0;transition:max-height .35s ease,opacity .25s,padding .35s}
  .panel.is-open{max-height:700px;padding:28px;margin:0;border-width:1px}
  .panel-img{height:auto;overflow:visible;border-radius:16px;align-self:center;margin:0}
}

/* ---------- mobile ---------- */
@media (max-width: 860px){
  .nav{padding:16px 20px}.nav-links{display:none}.nav .btn-sm{padding:8px 14px;font-size:12px}
  .hero{grid-template-columns:1fr;padding:26px 22px 0;gap:0}
  .hero h1{font-size:38px;line-height:1.25}
  .lead{font-size:14px}
  .cta-row .btn{width:100%;text-align:center}
  .cta-row .btn-ghost{display:none}
  .note{text-align:center;font-size:11.5px}
  .hero-phone{width:260px;margin:28px auto -80px;transform:none;filter:drop-shadow(0 12px 20px rgba(31,39,51,.18))}
  .shelf{margin-top:0}
  .shelf-crow{display:none}
  .chips{padding:100px 22px 24px;gap:6px;font-size:11.5px}.chips span{padding:6px 12px}
  .section{padding:44px 22px}
  h2{font-size:26px}
  .panel{grid-template-columns:minmax(0,1fr) 100px;gap:14px;padding:0 18px}
  .panel.is-open{max-height:600px;padding:18px}
  .panel .tag{display:none}
  .panel h3{font-size:19px;margin-top:0}.panel p{font-size:12.5px}
  .panel-img{border-radius:10px;box-shadow:0 14px 28px -14px rgba(31,39,51,.5)}
  .panel-img img{width:100px}
  .band-dark{padding:44px 22px}.band-inner{grid-template-columns:1fr;gap:22px}
  .crow-plate{width:140px;height:140px;border-radius:28px;order:-1}.crow-plate .crow{width:108px;height:108px}
  .band-dark p{font-size:13.5px}
  .steps{grid-template-columns:1fr;gap:12px}.step{padding:22px 20px 20px}.step h3{font-size:18px}.step p{font-size:13px}
  .ribbon{width:20px;height:50px;right:20px;top:-5px}
  .two{grid-template-columns:1fr;gap:14px}
  .open-book{padding:24px;grid-template-columns:1fr 100px;gap:14px}.open-book h3{font-size:19px}.open-book p{font-size:12.5px}.open-book img{width:100px}.open-book a{font-size:12.5px}
  .stats{grid-template-columns:1fr;gap:22px}.stats>div:first-child{order:2}
  .phones img{width:160px}.phones .lift{margin-top:24px}
  .section-inner.two{gap:40px}
  .contact{flex-direction:row}
  .cta{padding:56px 22px 30px}.mini-shelf i{width:44px}.cta .btn{width:100%;padding:16px}
  .foot-links{margin-top:40px;gap:16px;font-size:11.5px}
  .copyright{padding:14px 22px;font-size:11px}
}