:root{
  --orange:#ff5a0a; --orange2:#ff7a18; --ink:#151515; --muted:#6b6b6b;
  --cream:#fffaf5; --line:#ece7e1; --blue:#2a73c8; --green:#2a9a66;
  --shadow:0 12px 36px rgba(35,25,15,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--ink);background:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(0,0,0,.05)}
.header-inner{height:84px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.logo img{width:235px;height:auto}
.nav{display:flex;gap:34px;align-items:center;font-weight:700;font-size:14px}
.nav a{padding:30px 0 24px}
.nav a.active{color:var(--orange);border-bottom:3px solid var(--orange)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:9px;padding:15px 22px;font-weight:800;border:1px solid #222;transition:.2s}
.btn-primary{background:linear-gradient(135deg,var(--orange),var(--orange2));color:#fff;border-color:transparent}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,90,10,.25)}
.btn-ghost{background:#fff}
.menu-btn{display:none;background:none;border:0;font-size:30px;line-height:1}
.hero{padding:52px 0 28px;background:linear-gradient(180deg,#fff,#fffaf6)}
.hero-grid{display:grid;grid-template-columns:.95fr 1.25fr;align-items:center;gap:30px}
.hero h1{font-size:64px;line-height:1.12;margin:0 0 22px;letter-spacing:.02em}
.hero h1 em{font-style:normal;color:var(--orange)}
.lead{font-size:17px;line-height:2;font-weight:600;margin:0 0 28px}
.hero-visual{position:relative}
.hero-visual>img{border-radius:22px}
.device{position:absolute;right:1%;bottom:0;width:58%;background:#101010;border:8px solid #171717;border-radius:18px;padding:14px;box-shadow:0 18px 35px rgba(0,0,0,.24)}
.device-screen{background:#fff;border-radius:8px;padding:12px}
.score{font-size:42px;font-weight:900}.orange{color:var(--orange)}
.chart{height:78px;margin-top:10px;background:linear-gradient(180deg,#fff7f0,#fff);position:relative;border-radius:6px;overflow:hidden}
.chart:after{content:"";position:absolute;left:6%;right:5%;bottom:15px;height:2px;background:#ddd;box-shadow:0 -18px #eee,0 -36px #eee}
.chart-line{position:absolute;left:8%;right:8%;bottom:20px;height:44px;border-bottom:4px solid var(--orange);transform:skewY(-11deg)}
.icon-row{display:flex;gap:28px;margin:34px 0}
.icon-item{text-align:center;font-size:12px;font-weight:800}
.icon-circle{width:48px;height:48px;margin:0 auto 8px;border:3px solid #171717;border-radius:50%;display:grid;place-items:center;font-size:23px}
.actions{display:flex;gap:16px;flex-wrap:wrap}
.features{padding:20px 0 34px}
.feature-strip{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);box-shadow:var(--shadow)}
.feature{padding:10px 24px;border-right:1px solid var(--line)}
.feature:last-child{border-right:0}
.feature strong{font-size:17px;display:block;margin:6px 0 8px}
.feature p{font-size:13px;line-height:1.75;margin:0;color:#333}
.section{padding:34px 0}
.section-title{text-align:center;font-size:30px;margin:0 0 28px}
.section-title small{display:block;color:var(--orange);font-size:13px;letter-spacing:.18em;margin-bottom:7px}
.mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.mode{border:1px solid var(--line);border-radius:16px;padding:22px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.mode.score-mode{border-color:#f7b18a;background:linear-gradient(180deg,#fff9f5,#fff)}
.mode.game-mode{border-color:#b9d2ef;background:linear-gradient(180deg,#f8fbff,#fff)}
.mode.chart-mode{border-color:#a9dcc4;background:linear-gradient(180deg,#f8fffb,#fff)}
.mode h3{font-size:22px;margin:0}.mode h3 span{font-size:12px;display:block;color:#222;margin-top:4px}
.mode p{font-size:14px;line-height:1.8;min-height:76px}
.mode img{height:180px;width:100%;object-fit:contain}
.mini-ui{border:1px solid #ddd;border-radius:10px;padding:10px;background:#fff}
.ui-row{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:6px}
.ui-chip{padding:8px 4px;border-radius:6px;text-align:center;background:#f3f3f3;font-size:11px;font-weight:800}
.ui-chip.good{background:#d8f2dc;color:#136b2d}
.release{padding:10px 0 38px}
.release-box{display:grid;grid-template-columns:180px 1fr;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.release-title{background:#fff8ef;padding:24px;color:var(--orange);font-size:24px;font-weight:900}
.release-title span{display:block;color:#222;font-size:12px;margin-top:8px}
.release-list{padding:14px 22px}
.release-item{display:grid;grid-template-columns:90px 72px 1fr;gap:14px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px}
.release-item:last-child{border-bottom:0}
.badge{color:#fff;border-radius:5px;padding:5px 8px;text-align:center;font-size:10px;font-weight:900}
.badge.update{background:var(--orange)} .badge.new{background:var(--blue)} .badge.info{background:var(--green)}
.cta{padding:0 0 30px}
.cta-box{border:1px solid #ffd1b4;border-radius:16px;background:linear-gradient(90deg,#fff8f0,#fff);padding:22px 28px;display:grid;grid-template-columns:220px 1fr auto;gap:28px;align-items:center}
.cta-box img{height:135px;object-fit:contain}
.cta-box h3{font-size:23px;margin:0 0 8px}
.site-footer{background:linear-gradient(100deg,#111,#1c1c1c);color:#fff;padding:32px 0}
.footer-grid{display:grid;grid-template-columns:260px 1fr;gap:40px;align-items:center}
.footer-logo img{width:230px}.footer-logo small{display:block;margin-top:8px;color:#ddd}
.footer-links{display:flex;flex-wrap:wrap;gap:20px;font-size:13px}
.copy{margin-top:18px;color:#aaa;font-size:12px}
.page-hero{padding:68px 0 44px;background:linear-gradient(180deg,#fff,#fff9f4);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:46px;margin:0 0 12px}.page-hero p{font-size:16px;line-height:1.9;max-width:760px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.card{border:1px solid var(--line);border-radius:16px;padding:26px;background:#fff;box-shadow:var(--shadow)}
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.flow .card strong{color:var(--orange);font-size:22px}
.form-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}
.form-card label{display:block;font-weight:700;font-size:13px;margin:0 0 7px}
.form-card input,.form-card select,.form-card textarea{width:100%;padding:13px 14px;border:1px solid #dcdcdc;border-radius:8px;font:inherit;margin-bottom:16px}
.form-card textarea{min-height:120px;resize:vertical}
.notice{padding:16px;border-radius:10px;background:#fff8ef;border:1px solid #ffd8b7;font-size:13px;line-height:1.8}
.info-table{width:100%;border-collapse:collapse}
.info-table th,.info-table td{padding:15px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
.info-table th{width:170px;background:#fffaf5}
@media(max-width:820px){
 .container{width:min(100% - 28px,680px)}
 .header-inner{height:68px}.logo img{width:180px}.nav{display:none}
 .menu-btn{display:block}.site-header.open .nav{display:flex;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:12px 24px 24px;border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(0,0,0,.08)}
 .site-header.open .nav a{width:100%;padding:15px 0;border-bottom:1px solid var(--line)}
 .site-header .header-cta{display:none}
 .hero{padding-top:34px}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:46px}.lead{font-size:15px}
 .hero-visual{order:2}.device{width:65%;right:3%}.icon-row{gap:16px;justify-content:space-between}
 .feature-strip{grid-template-columns:1fr}.feature{border-right:0;border-bottom:1px solid var(--line);padding:16px 8px}.feature:last-child{border-bottom:0}
 .mode-grid,.flow{grid-template-columns:1fr}.mode p{min-height:auto}.mode img{height:210px}
 .release-box{grid-template-columns:1fr}.release-title{padding:18px 20px}.release-item{grid-template-columns:82px 62px 1fr;gap:8px;font-size:12px}
 .cta-box{grid-template-columns:1fr;text-align:center}.cta-box img{margin:auto}.cta-box .btn{width:100%}
 .footer-grid{grid-template-columns:1fr}.footer-links{display:grid;grid-template-columns:1fr 1fr}
 .two-col,.form-wrap{grid-template-columns:1fr}.page-hero{padding:44px 0 30px}.page-hero h1{font-size:34px}
}
@media(max-width:480px){
 .container{width:calc(100% - 22px)} .hero h1{font-size:39px}.actions .btn{width:100%}
 .device{position:relative;right:auto;bottom:auto;width:88%;margin:-38px auto 0}
 .hero-visual>img{border-radius:12px}.icon-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.icon-circle{width:42px;height:42px}
 .section-title{font-size:25px}.release-item{grid-template-columns:74px 56px 1fr}.release-list{padding:10px 14px}
 .footer-links{grid-template-columns:1fr}.info-table th{width:110px}
}

.icon-circle img{width:36px;height:36px;object-fit:contain}
.feature-icon{width:44px;height:44px;object-fit:contain;margin-bottom:7px}
.mode img,.hero-visual>img,.cta-box img,.two-col>img{image-rendering:auto}
.release-title{position:relative;padding-left:30px}
.release-title:before{content:"";display:block;width:42px;height:42px;background:url("../images/icon-record.png") center/contain no-repeat;margin-bottom:8px}

/* v3: all primary illustrations are baked PNG image assets */
.hero-visual>img{
  width:100%; height:auto; object-fit:contain; background:#fffaf5;
  border-radius:20px; box-shadow:none;
}
.feature-art{
  width:76px; height:62px; object-fit:contain; margin:0 0 8px 0;
  border-radius:10px; background:#fffaf5;
}
.mode img{
  width:100%; height:210px; object-fit:contain; background:#fffaf5;
  border-radius:10px;
}
.cta-box img,.two-col>img{
  width:100%; height:auto; max-height:260px; object-fit:contain; background:#fffaf5;
  border-radius:14px;
}
.footer-logo img{
  width:220px; height:auto; image-rendering:auto;
  filter:none; opacity:1;
}
.logo img{
  image-rendering:auto;
}
@media(max-width:820px){
  .feature-art{width:68px;height:58px}
  .mode img{height:190px}
}

/* Legal / Contact pages */
.legal-wrap{max-width:920px;margin:0 auto}
.legal-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:38px}
.legal-card h2{font-size:24px;margin:42px 0 14px;padding-top:2px}
.legal-card h2:first-child{margin-top:0}
.legal-card h3{font-size:18px;margin:26px 0 10px}
.legal-card p,.legal-card li{font-size:14px;line-height:1.95}
.legal-card ol,.legal-card ul{padding-left:1.5em}
.legal-meta{font-size:13px;color:#666;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.contact-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:start}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:28px}
.contact-card label{display:block;font-size:13px;font-weight:800;margin-bottom:8px}
.contact-card input,.contact-card textarea,.contact-card select{
  width:100%;border:1px solid #d7d7d7;border-radius:8px;padding:13px 14px;font:inherit;background:#fff;margin-bottom:18px
}
.contact-card textarea{min-height:180px;resize:vertical}
.req{display:inline-block;background:var(--orange);color:#fff;border-radius:4px;padding:2px 6px;font-size:10px;margin-left:6px;vertical-align:2px}
.contact-side{background:#fffaf5;border:1px solid #ffe0ca;border-radius:16px;padding:24px}
.contact-side h3{margin-top:0}
.contact-side p{font-size:13px;line-height:1.9}
.form-msg{padding:14px 16px;border-radius:8px;margin-bottom:18px;font-size:14px;line-height:1.7}
.form-msg.success{background:#eef9f1;border:1px solid #b8dfc2;color:#205e30}
.form-msg.error{background:#fff1ef;border:1px solid #f4beb7;color:#8f2c20}
.honeypot{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}
@media(max-width:820px){
 .legal-card{padding:24px 18px}.contact-layout{grid-template-columns:1fr}
 .legal-card h2{font-size:21px}
}