:root{
  --paper:#2e2e30; --paper2:#262628; --white:rgba(242,240,234,.035);
  --sumi:#F2F0EA; --sumi2:rgba(242,240,234,.62);
  --brass:#FFC800; --brass-l:rgba(255,200,0,.42);
  --line:rgba(242,240,234,.14); --line2:rgba(242,240,234,.07);
  --sans:"Helvetica Neue","Hiragino Sans","Noto Sans JP","Yu Gothic",sans-serif;
  --mincho:"Hiragino Mincho ProN","Yu Mincho","Noto Serif JP",serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background-color:var(--paper);background-image:linear-gradient(115deg,transparent 25%,rgba(255,255,255,.03) 38%,rgba(255,255,255,.07) 47%,rgba(255,255,255,.03) 56%,transparent 70%),radial-gradient(ellipse 900px 620px at 78% 0%,rgba(255,255,255,.06),transparent 55%),linear-gradient(135deg,#272729 0%,#302f31 50%,#333234 100%);background-attachment:fixed;color:var(--sumi);font-family:var(--sans);
  font-size:15px;line-height:2;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--brass)}
.inner{max-width:1080px;margin:0 auto;padding:0 22px}
.narrow{max-width:820px;margin:0 auto;padding:0 22px}

/* ---------- header ---------- */
.hd{position:sticky;top:0;z-index:60;background:rgba(38,38,40,.95);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.hd .in{max-width:1080px;margin:0 auto;padding:0 22px;height:66px;display:flex;align-items:center;gap:20px}
.logo{font-family:var(--mincho);font-size:21px;letter-spacing:.14em;text-decoration:none;color:var(--sumi);line-height:1.1;flex:none}
.logo .y{color:var(--brass)}
.logo small{display:block;font-size:7.5px;letter-spacing:.4em;color:var(--sumi2);font-family:var(--sans);margin-top:2px}
.gnav{display:none;flex:1;gap:22px}
.gnav a{font-size:13px;color:var(--sumi);text-decoration:none;white-space:nowrap;padding:6px 0;border-bottom:1px solid transparent}
.gnav a:hover{color:var(--brass);border-bottom-color:var(--brass-l)}
.hd .right{margin-left:auto;display:flex;align-items:center;gap:10px}
.hbtn{font-size:11.5px;letter-spacing:.08em;background:var(--brass);color:#000;padding:11px 15px;
  border-radius:2px;font-weight:600;text-decoration:none;white-space:nowrap}
.hbtn.line{background:transparent;color:var(--sumi);border:1px solid var(--line);font-weight:400}
.burger{width:40px;height:40px;border:1px solid var(--line);background:transparent;border-radius:2px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;flex:none}
.burger i{display:block;width:16px;height:1.5px;background:var(--sumi);transition:.25s;font-style:normal}
.burger.on i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.on i:nth-child(2){opacity:0}
.burger.on i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.drawer{position:fixed;inset:0;z-index:55;background:rgba(24,24,26,.985);backdrop-filter:blur(8px);
  padding:88px 28px 48px;transform:translateX(100%);transition:transform .3s ease;overflow:auto}
.drawer.open{transform:none}
.drawer a{display:flex;justify-content:space-between;align-items:center;text-decoration:none;color:var(--sumi);
  font-family:var(--mincho);font-size:16px;letter-spacing:.08em;padding:15px 2px;border-bottom:1px solid var(--line)}
.drawer a small{font-size:9px;letter-spacing:.26em;color:var(--brass);font-family:var(--sans)}
.drawer a.free{color:var(--brass)}
.drawer .ext{font-size:12px;color:var(--sumi2);padding:16px 2px 0}
@media(min-width:980px){.gnav{display:flex}.burger{display:none}}

/* ---------- common ---------- */
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
body{animation:fade .35s ease both}
section.blk{padding:64px 0;border-bottom:1px solid var(--line2)}
.eyebrow{font-size:10px;letter-spacing:.34em;color:var(--brass)}
h2.st{font-family:var(--mincho);font-size:clamp(22px,4.4vw,32px);font-weight:600;letter-spacing:.05em;margin:12px 0 0;line-height:1.7}
.stlead{font-size:14px;color:var(--sumi2);margin:14px 0 0;max-width:46em;line-height:2.1}
.tx{font-size:15px;line-height:2.15;margin:18px 0 0}
.tx b{color:var(--brass);font-weight:400}
.btn{display:inline-block;text-align:center;background:var(--brass);color:#000;font-weight:600;
  letter-spacing:.1em;font-size:14px;border-radius:2px;padding:17px 34px;text-decoration:none;transition:.15s}
.btn:hover{background:#FFD633;transform:translateY(-2px)}
.btn.line{background:transparent;color:var(--sumi);border:1px solid var(--line);font-weight:400}
.btn.line:hover{border-color:var(--brass);color:var(--brass);background:transparent;transform:none}
.btn.brass{background:var(--brass);color:#000}
.btn.brass:hover{background:#E6B400}
.btnrow{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btnrow .btn{flex:1 1 220px}
.morelink{display:inline-block;font-size:12.5px;letter-spacing:.1em;color:var(--brass);text-decoration:none;margin-top:20px}
.pagehead{padding:46px 0 0}
.crumb{font-size:10.5px;letter-spacing:.12em;color:var(--sumi2)}
.crumb a{color:var(--sumi2);text-decoration:none}
.pagehead h1{font-family:var(--mincho);font-size:clamp(25px,5.2vw,38px);font-weight:600;letter-spacing:.06em;margin:12px 0 0}
.pagehead .en{font-size:10px;letter-spacing:.34em;color:var(--brass);margin-top:8px}

/* ---------- hero ---------- */
.hero{padding:74px 0 66px;border-bottom:1px solid var(--line);text-align:center}
.seal{display:inline-flex;align-items:center;gap:8px;font-size:10px;letter-spacing:.24em;color:var(--brass);
  border:1px solid var(--brass);border-radius:999px;padding:5px 14px}
.seal i{width:4px;height:4px;background:var(--brass);border-radius:50%;font-style:normal}
.hero .brand{font-family:var(--mincho);font-size:clamp(54px,13vw,100px);letter-spacing:.16em;margin:28px 0 0;line-height:1}
.hero .brand .y{color:var(--brass)}
.hero .romaji{font-size:10px;letter-spacing:.5em;color:var(--sumi2);margin-top:16px}
.hero .copy{font-family:var(--mincho);font-size:clamp(17px,3.4vw,26px);line-height:2.1;margin:34px 0 0;letter-spacing:.05em}
.hero .copy b{color:var(--brass);font-weight:600}
.hero .sub{font-size:13.5px;color:var(--sumi2);margin:18px auto 0;line-height:2.1;max-width:40em}
.hero .btnrow{justify-content:center;max-width:560px;margin-left:auto;margin-right:auto}

/* ---------- tool ---------- */
.tool{border:1px solid var(--brass);background:rgba(255,200,0,.055);padding:34px 24px;margin-top:26px}
.tool .lb{font-size:10px;letter-spacing:.28em;color:var(--brass);text-align:center}
.tool h3{font-family:var(--mincho);font-size:clamp(18px,3.6vw,24px);text-align:center;margin:12px 0 0;font-weight:600;letter-spacing:.05em}
.tool .frm{display:grid;grid-template-columns:1fr;gap:12px;margin:22px auto 0;max-width:520px}
@media(min-width:640px){.tool .frm{grid-template-columns:1fr 1fr auto}}
.tool input,.tool select{background:rgba(242,240,234,.05);border:1px solid var(--line);color:var(--sumi);
  border-radius:2px;padding:14px;font-size:14.5px;font-family:inherit;width:100%}
.tool .go{background:var(--brass);color:#000;border:none;border-radius:2px;padding:14px 26px;
  font-weight:600;font-size:14px;letter-spacing:.08em;cursor:pointer;font-family:inherit;white-space:nowrap}
.tool .note{font-size:11.5px;color:var(--sumi2);text-align:center;margin-top:14px;line-height:1.9}

/* ---------- duo ---------- */
.duo{display:grid;grid-template-columns:1fr;gap:12px;margin-top:26px}
@media(min-width:720px){.duo{grid-template-columns:1fr 56px 1fr}}
.duo .bx{border:1px solid var(--line);background:var(--white);padding:26px 22px;text-align:center}
.duo .bx.k{border-color:var(--brass);background:rgba(255,200,0,.055)}
.duo .t{font-size:10.5px;letter-spacing:.2em;color:var(--sumi2)}
.duo .bx.k .t{color:var(--brass)}
.duo .n{font-family:var(--mincho);font-size:23px;margin-top:10px;letter-spacing:.08em}
.duo .d{font-size:13px;color:var(--sumi2);margin-top:12px;line-height:2;text-align:left}
.duo .x{display:flex;align-items:center;justify-content:center;font-family:var(--mincho);font-size:25px;color:var(--brass);padding:4px}
.duo svg{display:block;margin:12px auto 0}

/* ---------- grid / cards ---------- */
.grid{display:grid;grid-template-columns:1fr;gap:14px;margin-top:26px}
@media(min-width:640px){.grid.c2{grid-template-columns:1fr 1fr}.grid.c3{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.grid.c4{grid-template-columns:repeat(4,1fr)}}
@media(min-width:640px) and (max-width:899px){.grid.c4{grid-template-columns:1fr 1fr}}
.card{border:1px solid var(--line);background:var(--white);padding:24px 20px;text-decoration:none;
  color:var(--sumi);display:block;transition:.2s}
.card:hover{border-color:var(--brass-l);box-shadow:0 6px 20px rgba(0,0,0,.32)}
.card .ax{display:inline-block;font-size:9.5px;letter-spacing:.16em;color:var(--brass);
  border:1px solid var(--brass-l);border-radius:999px;padding:2px 10px}
.card h3{font-family:var(--mincho);font-size:17px;font-weight:600;margin:12px 0 0;letter-spacing:.04em;line-height:1.7}
.card .sub{font-size:11.5px;color:var(--sumi2);margin-top:4px}
.card p{font-size:13px;color:var(--sumi2);margin:12px 0 0;line-height:2}
.card .d{display:block;font-size:11px;color:var(--brass);margin-top:14px}
.card .ic{font-family:var(--mincho);font-size:26px;color:var(--brass);border:1px solid var(--brass-l);
  width:52px;height:52px;display:flex;align-items:center;justify-content:center;border-radius:2px;margin-bottom:14px}
.card.soon{border-style:dashed;background:transparent;opacity:.72}
.card .soonlab{display:inline-block;font-size:10px;letter-spacing:.2em;color:var(--sumi2);
  border:1px solid var(--line);padding:2px 10px;border-radius:999px;margin-top:14px}

/* ---------- rows ---------- */
.rows{border-top:1px solid var(--line);margin-top:24px}
.rows .r{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.rows .no{font-family:var(--mincho);font-size:17px;color:var(--brass);padding-top:2px}
.rows b{font-size:15px;font-weight:600;letter-spacing:.03em}
.rows span{display:block;font-size:13.5px;color:var(--sumi2);margin-top:6px;line-height:2.05}
.rows .r.core{background:rgba(255,200,0,.055);padding-left:14px;padding-right:14px}
.rows .r.core b{color:var(--brass)}
.nextread{margin:40px 0 4px;padding-top:26px;border-top:1px solid var(--line)}
.nextread .nr-lbl{font-family:var(--mincho);font-size:17px;font-weight:600;color:var(--sumi);letter-spacing:.04em;margin-bottom:16px}
.nextread .nr-lbl::before{content:"■ ";color:var(--brass);font-size:12px;vertical-align:2px}
.nextread a{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--sumi);text-decoration:none;font-family:var(--mincho);font-size:15.5px;line-height:1.55;border:1px solid var(--line);border-radius:12px;background:var(--white);padding:17px 18px;margin-bottom:11px;transition:border-color .2s,background .2s,transform .2s}
.nextread a::after{content:"読む →";flex:none;font-family:var(--sans);font-size:12px;color:var(--brass);white-space:nowrap}
.nextread a:hover{border-color:var(--brass-l);background:rgba(255,200,0,.06);transform:translateX(3px)}
.nextread .nr-all{display:inline-flex;border:none;background:none;padding:6px 0 0;margin:0;font-family:var(--sans);font-size:13px;color:var(--brass);transform:none}
.nextread .nr-all::after{content:" →"}
.nextread .nr-all:hover{background:none;transform:none;text-decoration:underline}
/* ---- 目次 ---- */
.toc{border:1px solid var(--line);border-radius:12px;background:var(--white);padding:20px 24px;margin:28px 0}
.toc-ttl{font-family:var(--mincho);font-size:15px;font-weight:600;color:var(--sumi);letter-spacing:.04em;margin-bottom:12px}
.toc-ttl::before{content:"目次 ";color:var(--brass);font-family:var(--sans);font-size:10px;letter-spacing:.2em;margin-right:2px}
.toc-list{margin:0;padding-left:1.5em}
.toc-list li{margin:8px 0;font-size:13.5px;line-height:1.6}
.toc-list li::marker{color:var(--brass)}
.toc-list a{color:var(--sumi2);text-decoration:none}
.toc-list a:hover{color:var(--brass);text-decoration:underline}
section.blk h2.st{scroll-margin-top:84px}
/* ---- 図解 ---- */
.fig{margin:26px 0;border:1px solid var(--line);border-radius:12px;background:var(--white);padding:22px 14px 16px}
.fig svg{display:block;width:100%;height:auto;max-width:520px;margin:0 auto}
.fig figcaption{text-align:center;font-size:12px;color:var(--sumi2);margin-top:14px;line-height:1.7}

/* ---------- price ---------- */
.pricebox{border:1px solid var(--brass);background:rgba(255,200,0,.055);padding:40px 24px;text-align:center;margin-top:26px}
.pricebox .lb{font-size:10.5px;letter-spacing:.28em;color:var(--brass)}
.pricebox h3{font-family:var(--mincho);font-size:clamp(19px,3.8vw,25px);margin:14px 0 0;font-weight:600;letter-spacing:.05em;line-height:1.7}
.pricebox .pr{font-family:var(--mincho);font-size:clamp(38px,8vw,52px);margin:16px 0 4px;line-height:1}
.pricebox .pr small{font-size:15px;color:var(--sumi2)}
.pricebox .note{font-size:12.5px;color:var(--sumi2);line-height:2;margin-top:12px}

/* ---------- faq ---------- */
.faq{margin-top:24px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-size:14.5px;padding:18px 0;list-style:none;display:flex;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";color:var(--brass);font-family:var(--mincho);flex:none}
.faq .a{font-size:13.5px;color:var(--sumi2);line-height:2.15;padding:0 0 20px 26px}

/* ---------- profile / form ---------- */
.prof{display:grid;grid-template-columns:110px 1fr;gap:20px;align-items:center;margin-top:26px}
.prof .ph{width:110px;height:110px;border:1px solid var(--line);background:var(--white);
  display:flex;align-items:center;justify-content:center;font-size:10px;letter-spacing:.14em;color:var(--sumi2)}
.prof .nm{font-family:var(--mincho);font-size:20px;letter-spacing:.08em}
.prof .rl{font-size:12px;color:var(--sumi2);margin-top:6px}
.form{margin-top:26px;max-width:640px}
.form .fld{margin-top:18px}
.form label{display:block;font-size:11px;letter-spacing:.14em;color:var(--brass);margin-bottom:8px}
.form input,.form select,.form textarea{width:100%;background:var(--white);border:1px solid var(--line);
  color:var(--sumi);border-radius:2px;padding:14px;font-size:14.5px;font-family:inherit}
.form textarea{min-height:130px}

/* ---------- bottom cta ---------- */
.bcta{padding:70px 0;text-align:center;background:var(--paper2);border-top:1px solid var(--line)}
.bcta h2{font-family:var(--mincho);font-size:clamp(21px,4.2vw,30px);font-weight:600;letter-spacing:.05em;line-height:1.8;margin:0}
.bcta p{font-size:13.5px;color:var(--sumi2);margin:16px 0 0}
.bcta .btnrow{justify-content:center;max-width:560px;margin:26px auto 0}

/* ---------- footer ---------- */
footer{padding:50px 0 60px;border-top:1px solid var(--line);font-size:12px;color:var(--sumi2);line-height:2.1;background:var(--paper2)}
.fgrid{display:grid;grid-template-columns:1fr;gap:26px}
@media(min-width:720px){.fgrid{grid-template-columns:1.2fr 1fr 1fr}}
.brandf{font-family:var(--mincho);font-size:22px;letter-spacing:.14em;color:var(--sumi)}
.brandf .y{color:var(--brass)}
.fcol h4{font-size:10px;letter-spacing:.26em;color:var(--brass);margin:0 0 10px;font-weight:400}
.fcol a{display:block;color:var(--sumi2);text-decoration:none;font-size:12.5px;padding:4px 0}
.fcol a:hover{color:var(--brass)}
.fbottom{margin-top:34px;padding-top:20px;border-top:1px solid var(--line);font-size:11.5px}
.fbottom a{color:var(--sumi2);text-decoration:none;margin-right:14px}
.disc{font-size:11.5px;line-height:2;margin-top:12px}