/* おとなのピアノ教室 ゆうぐれ（制作の見本）
   色：宵の藍の地・生成りの字・灯りの琥珀。明るいのは値段の紙だけ。
   字：しっぽり明朝B1（見出し）／Zen角ゴシック Antique（本文）／Playfair Display（数字と飾り）。
   しるし：夕暮れから夜へ変わる空と、五線に1つずつ灯る音符。 */
:root{
  --bg:#1B1E33; --sf:#242844;
  --ink:#F3E9D7; --ink2:rgba(243,233,215,.84); --mute:#B6AEC0;
  --amber:#E7A857; --sunset:#D9774F;
  --line:rgba(243,233,215,.14); --line2:rgba(243,233,215,.3);
  --paper:#F5EEDF; --pink:#2A2438; --pmute:#5F5769; --pline:rgba(42,36,56,.16); --ochre:#8A5418;
  --ff-min:"Shippori Mincho B1","Hiragino Mincho ProN","Yu Mincho","YuMincho",serif;
  --ff-go:"Zen Kaku Gothic Antique","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic",sans-serif;
  --ff-it:"Playfair Display","Times New Roman",Georgia,serif;
  --ease:cubic-bezier(.22,.61,.36,1); --out:cubic-bezier(.16,1,.3,1); --slow:cubic-bezier(.65,.05,.36,1);
  --gut:clamp(24px,6.4vw,88px);
  --glow:0 0 0 3px rgba(231,168,87,.16),0 0 16px 4px rgba(231,168,87,.5);
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;color:var(--ink);font-family:var(--ff-go);font-size:16px;line-height:2;letter-spacing:.04em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-break:strict;word-break:auto-phrase;overflow-wrap:anywhere;overflow-x:clip}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,p,ul,ol,dl,dd,figure{margin:0;padding:0}
h1,h2,h3{font-weight:500}
ul,ol{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;letter-spacing:inherit;-webkit-tap-highlight-color:transparent}
::selection{background:var(--amber);color:var(--bg)}
:focus-visible{outline:1px solid var(--amber);outline-offset:4px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.ib{display:inline-block}
body::after{content:"";position:fixed;inset:0;z-index:90;pointer-events:none;opacity:.06;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='170' height='170'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 .95  0 0 0 0 .86  0 0 0 1.2 -.25'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

/* ---------- 空（しるし：夕暮れ→藍→夜） ---------- */
.sky{position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(180deg,#131629 0%,#1B1E33 50%,#272B4A 100%)}
.sky>*{position:absolute;inset:0;display:block}
.sky__dusk{background:linear-gradient(180deg,#1E2142 0%,#2C2A4C 36%,#463352 66%,#683F4A 88%,#7E4744 100%)}
.sky__night{opacity:0;background:linear-gradient(180deg,#06070E 0%,#0B0D1B 46%,#14172E 100%)}
.sky__stars{opacity:0}
.sky__stars b{position:absolute;border-radius:50%;background:#FFF4DE;box-shadow:0 0 6px 1px rgba(255,236,200,.5);animation:tw var(--t,5s) ease-in-out var(--dl,0s) infinite}
@keyframes tw{0%,100%{opacity:.3}50%{opacity:1}}
html.static *,html.static *::before,html.static *::after{transition:none!important;animation:none!important}

/* ---------- 共通 ---------- */
main{position:relative}
.in{position:relative;width:100%;max-width:1280px;margin-inline:auto;padding-inline:var(--gut)}
.sec{position:relative;padding:120px 0}
.lbl{display:flex;align-items:center;gap:12px;margin-bottom:24px;font-size:12.5px;letter-spacing:.2em;line-height:1;color:var(--ink2)}
.lbl__no{flex:none;display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--line2);font-family:var(--ff-it);font-size:14px;letter-spacing:0;color:var(--ink)}
.lbl__ja{flex:none}
.lbl__it{flex:1;display:flex;align-items:center;gap:12px;font-family:var(--ff-it);font-size:17px;letter-spacing:.02em;color:var(--amber);white-space:nowrap}
.lbl__it::before{content:"";flex:1;min-width:18px;height:1px;background:var(--line)}
.h2{font-family:var(--ff-min);font-weight:500;font-size:clamp(26px,7.2vw,46px);line-height:1.62;letter-spacing:.08em;font-feature-settings:"palt";text-wrap:balance}
.body{margin-top:24px;color:var(--ink2);text-wrap:pretty}

/* 五線（見出しの下の罫。音符が1つずつ灯る） */
.rule{position:relative;width:100%;max-width:420px;height:25px;margin:26px 0 10px;--gap:6px;--hg:3px;--nd:8px}
.rule::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(180deg,var(--sl,rgba(243,233,215,.3)) 0 1px,transparent 1px var(--gap))}
.rule i{position:absolute;left:var(--x);top:calc(var(--s)*var(--hg));width:var(--nd);height:var(--nd);margin:calc(var(--nd)/-2) 0 0 calc(var(--nd)/-2);border-radius:50%;border:1px solid var(--sl2,rgba(243,233,215,.36));transition:background-color 1s var(--ease),border-color 1s var(--ease),box-shadow 1.4s var(--ease),opacity .8s var(--ease),transform 1s var(--out)}
.rule i.lg::after{content:"";position:absolute;left:-6px;right:-6px;top:50%;height:1px;margin-top:-.5px;background:var(--sl,rgba(243,233,215,.3))}
.rule i.l{background:var(--amber);border-color:var(--amber);opacity:.6}
.rule i.n,.rule i.a{background:var(--amber);border-color:var(--amber);box-shadow:var(--glow)}
.rule i.ping{animation:rping .6s var(--out)}
@keyframes rping{0%{transform:none}30%{transform:scale(1.9);box-shadow:0 0 0 4px rgba(231,168,87,.25),0 0 28px 9px rgba(231,168,87,.9)}100%{transform:none}}
.rule .fin{position:absolute;right:0;top:0;bottom:0;width:7px;border-left:1px solid var(--ink);border-right:3px solid var(--ink);opacity:.8}
html.js .rule::before{clip-path:inset(0 100% 0 0);transition:clip-path 1.8s var(--ease) var(--d,0s)}
html.js .rule.is-in::before{clip-path:inset(0 0 0 0)}
html.js .rule i{opacity:0;transform:scale(.5);transition-delay:0s,0s,0s,calc(var(--d,0s) + .5s + var(--i)*.07s),calc(var(--d,0s) + .5s + var(--i)*.07s)}
html.js .rule.is-in i{opacity:1;transform:none}
html.js .rule.is-in i.l{opacity:.6}
html.js .rule i.n,html.js .rule i.a{background:transparent;border-color:var(--sl2,rgba(243,233,215,.36));box-shadow:none;transition-delay:calc(var(--d,0s) + 1.5s + var(--i)*.05s),calc(var(--d,0s) + 1.5s + var(--i)*.05s),calc(var(--d,0s) + 1.5s + var(--i)*.05s),calc(var(--d,0s) + .5s + var(--i)*.07s),calc(var(--d,0s) + .5s + var(--i)*.07s)}
html.js .rule.is-in i.n,html.js .rule.is-in i.a{background:var(--amber);border-color:var(--amber);box-shadow:var(--glow)}
html.js .rule .fin{opacity:0;transition:opacity 1.2s var(--ease) calc(var(--d,0s) + 2.2s)}
html.js .rule.is-in .fin{opacity:.8}
.rule--ink{--sl:rgba(42,36,56,.3);--sl2:rgba(42,36,56,.38)}

/* 出てくる動き（プログラムが動く時だけ） */
html.js [data-r=""]{opacity:0;transform:translateY(22px);transition:opacity 1.2s var(--ease) var(--d,0s),transform 1.5s var(--out) var(--d,0s)}
html.js [data-r=""].is-in{opacity:1;transform:none}

/* 写真：灯りがともるように明るくなって、窓が開く */
.pic{position:relative;isolation:isolate}
.pic::before{content:"";position:absolute;z-index:-1;left:6%;right:6%;top:10%;bottom:6%;background:radial-gradient(closest-side,rgba(231,168,87,.24),rgba(231,168,87,0));filter:blur(26px)}
.pic__f{position:relative;display:block;overflow:hidden;aspect-ratio:var(--ar,4/5);background:#24223A}
.pic__f img{position:absolute;left:0;top:-7%;width:100%;height:114%;object-fit:cover;will-change:transform}
.pic figcaption{position:relative;margin-top:14px;padding-left:30px;font-family:var(--ff-min);font-size:14.5px;letter-spacing:.1em;line-height:1.7;color:var(--ink2);text-wrap:balance}
.pic figcaption::before{content:"";position:absolute;left:0;top:.85em;width:18px;height:1px;background:var(--amber)}
html.js .pic[data-r="pic"] .pic__f{clip-path:inset(7% 9% 7% 9%);filter:brightness(.18) saturate(.6);transition:clip-path 1.9s var(--out) var(--d,0s),filter 2.6s var(--ease) var(--d,0s)}
html.js .pic[data-r="pic"].is-in .pic__f{clip-path:inset(0 0 0 0);filter:none}
html.js .pic[data-r="pic"] .pic__f img{scale:1.14;transition:scale 2.8s var(--out) var(--d,0s)}
html.js .pic[data-r="pic"].is-in .pic__f img{scale:1}
html.js .pic[data-r="pic"]::before,html.js .pic[data-r="pic"] figcaption{opacity:0;transition:opacity 1.6s var(--ease) calc(var(--d,0s) + .9s)}
html.js .pic[data-r="pic"].is-in::before,html.js .pic[data-r="pic"].is-in figcaption{opacity:1}

/* 灯りの釦 */
.btn{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:66px;padding:12px 13px 12px 30px;border-radius:999px;background:linear-gradient(180deg,#EEB66A,#E09E4B);color:#1B1E33;box-shadow:0 18px 44px -18px rgba(231,168,87,.75),inset 0 1px 0 rgba(255,255,255,.42);transition:transform .6s var(--out),box-shadow .6s var(--out)}
.btn__t{display:flex;flex-direction:column;font-family:var(--ff-min);font-weight:700;font-size:18px;letter-spacing:.12em;line-height:1.35}
.btn__t small{margin-top:3px;font-family:var(--ff-go);font-weight:500;font-size:12.5px;letter-spacing:.06em;opacity:.8}
.btn__ar{position:relative;flex:none;width:42px;height:42px;border-radius:50%;background:#1B1E33;transition:transform .6s var(--out)}
.btn__ar::before{content:"";position:absolute;left:13px;top:20.5px;width:15px;height:1px;background:var(--amber)}
.btn__ar::after{content:"";position:absolute;left:21px;top:17px;width:7px;height:7px;border-top:1px solid var(--amber);border-right:1px solid var(--amber);transform:rotate(45deg)}
.btn:hover{transform:translateY(-2px);box-shadow:0 26px 56px -18px rgba(231,168,87,.9),inset 0 1px 0 rgba(255,255,255,.42)}
.btn:hover .btn__ar{transform:translateX(3px)}

/* 「聴く」釦 */
.listen{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:0 18px 0 12px;border:1px solid rgba(231,168,87,.8);border-radius:999px;font-family:var(--ff-min);font-size:14px;letter-spacing:.08em;line-height:1;color:var(--ink);transition:background-color .4s}
.listen i{position:relative;flex:none;width:20px;height:20px;border-radius:50%;background:var(--amber);box-shadow:0 0 12px rgba(231,168,87,.55)}
.listen i::after{content:"";position:absolute;left:8px;top:6px;border-left:6px solid #1B1E33;border-top:4px solid transparent;border-bottom:4px solid transparent}
.listen.is-play i::after{left:7px;top:7px;width:6px;height:6px;border:0;background:#1B1E33}
.listen:hover{background:rgba(231,168,87,.12)}

/* ---------- 始まりの幕 ---------- */
.curtain{display:none}
html.js .curtain{display:flex;position:fixed;inset:0;z-index:100;align-items:center;justify-content:center;background:radial-gradient(70% 50% at 50% 56%,#2B2747 0%,#1B1E33 72%);clip-path:inset(0 0 0 0);transition:clip-path 1.3s var(--slow) .15s,visibility 0s 1.6s}
html.js.is-loaded .curtain{clip-path:inset(0 0 100% 0);visibility:hidden}
.curtain__in{text-align:center;transition:opacity .7s var(--ease),transform 1.3s var(--slow)}
html.js.is-loaded .curtain__in{opacity:0;transform:translateY(-36px)}
.curtain__staff{width:220px;height:auto;margin:0 auto;overflow:visible}
.cs-l{stroke:rgba(243,233,215,.42);stroke-width:1;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.1s var(--ease) forwards}
.cs-l:nth-of-type(2){animation-delay:.06s}.cs-l:nth-of-type(3){animation-delay:.12s}.cs-l:nth-of-type(4){animation-delay:.18s}.cs-l:nth-of-type(5){animation-delay:.24s}
@keyframes draw{to{stroke-dashoffset:0}}
.cs-n circle{fill:var(--amber)}
.cs-n .cs-g{fill:url(#cgl)}
.cs-n{opacity:0;animation:pop .9s var(--out) forwards}
.cs-n:nth-of-type(1){animation-delay:.6s}.cs-n:nth-of-type(2){animation-delay:.82s}.cs-n:nth-of-type(3){animation-delay:1.04s}.cs-n:nth-of-type(4){animation-delay:1.26s}
@keyframes pop{0%{opacity:0;transform:translateY(5px)}100%{opacity:1;transform:none}}
.curtain__name{margin-top:20px;font-family:var(--ff-min);font-size:26px;letter-spacing:.42em;padding-left:.42em;line-height:1.4;opacity:0;animation:rise 1s var(--ease) .95s forwards}
.curtain__kind{margin-top:6px;font-size:12px;letter-spacing:.3em;padding-left:.3em;line-height:1.6;color:var(--mute);opacity:0;animation:rise 1s var(--ease) 1.15s forwards}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- 上の帯 ---------- */
.hd{position:fixed;z-index:50;top:0;left:0;right:0;display:flex;align-items:center;gap:16px;height:64px;padding:0 calc(var(--gut) - 12px) 0 var(--gut);transition:transform .7s var(--ease),background-color .5s}
.hd::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);opacity:0;transition:opacity .5s}
.hd.is-solid{background:rgba(21,23,43,.74);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2)}
.hd.is-solid::after{opacity:1}
.hd.is-hide{transform:translateY(-102%)}
html.is-menu .hd{transform:none;background:transparent;-webkit-backdrop-filter:none;backdrop-filter:none}
html.is-menu .hd::after{opacity:0}
html.js .hd{opacity:0;transition:transform .7s var(--ease),background-color .5s,opacity 1.2s var(--ease) 1.6s}
html.js.is-loaded .hd{opacity:1}
.hd__logo{display:flex;align-items:center;gap:10px;margin-right:auto;padding-block:5px;line-height:1}
.mark{flex:none;width:30px;height:30px}
.mark__sun{fill:var(--amber)}
.mark__l{fill:none;stroke:currentColor;stroke-width:1;opacity:.5}
.hd__name{display:flex;flex-direction:column;gap:5px}
.hd__name small{font-size:12px;letter-spacing:.14em;color:var(--ink2)}
.hd__name b{font-family:var(--ff-min);font-weight:500;font-size:20px;letter-spacing:.24em}
.hd__nav,.hd__cta{display:none}
.hd__btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;width:52px;height:52px}
.hd__bars{position:relative;display:block;width:24px;height:8px}
.hd__bars i{position:absolute;left:0;right:0;height:1px;background:currentColor;transition:transform .6s var(--out),top .6s var(--out)}
.hd__bars i:nth-child(1){top:0}
.hd__bars i:nth-child(2){top:7px}
.hd__btn em{font-style:normal;font-size:12px;letter-spacing:.16em;line-height:1}
html.is-menu .hd__bars i:nth-child(1){top:4px;transform:rotate(22deg)}
html.is-menu .hd__bars i:nth-child(2){top:4px;transform:rotate(-22deg)}

/* 目次（携帯） */
.gm{position:fixed;z-index:45;inset:0;overflow:auto;background:linear-gradient(180deg,#121429 0%,#1B1E33 55%,#2B2645 100%);visibility:hidden;opacity:0;transition:opacity .6s var(--ease),visibility 0s .6s}
html.is-menu .gm{visibility:visible;opacity:1;transition:opacity .6s var(--ease)}
html.is-menu,html.is-menu body{overflow:hidden}
.gm__in{display:flex;flex-direction:column;min-height:100%;padding:88px var(--gut) 96px}
.gm__list{border-top:1px solid var(--line)}
.gm__list li{border-bottom:1px solid var(--line);opacity:0;transform:translateY(14px);transition:opacity .4s,transform .4s}
html.is-menu .gm__list li{opacity:1;transform:none;transition:opacity .8s var(--ease) calc(.12s + var(--i,0)*.05s),transform 1s var(--out) calc(.12s + var(--i,0)*.05s)}
.gm__list li:nth-child(2){--i:1}.gm__list li:nth-child(3){--i:2}.gm__list li:nth-child(4){--i:3}.gm__list li:nth-child(5){--i:4}.gm__list li:nth-child(6){--i:5}.gm__list li:nth-child(7){--i:6}.gm__list li:nth-child(8){--i:7}.gm__list li:nth-child(9){--i:8}
.gm__list a{display:grid;grid-template-columns:40px 1fr auto;align-items:center;min-height:54px;font-family:var(--ff-min);font-size:16.5px;letter-spacing:.1em}
.gm__list b{display:grid;place-items:center;width:24px;height:24px;border:1px solid var(--line2);font-family:var(--ff-it);font-weight:400;font-size:13px;letter-spacing:0}
.gm__list i{font-family:var(--ff-it);font-size:14px;color:var(--amber)}
.gm__info{margin-top:28px;font-size:13px;line-height:1.9;color:var(--mute)}

/* ---------- 最初の画面 ---------- */
.hero{position:relative;height:100vh;height:100svh;min-height:580px;overflow:hidden}
.hero__media{position:absolute;inset:0;will-change:transform;-webkit-mask-image:linear-gradient(180deg,#000 80%,transparent 100%);mask-image:linear-gradient(180deg,#000 80%,transparent 100%)}
.hero__media picture,.hero__media img{display:block;width:100%;height:100%}
.hero__media img{object-fit:cover;object-position:36% 50%}
html.js .hero__media img{scale:1.1;filter:brightness(.32) saturate(.8);transition:scale 3.4s var(--out) .1s,filter 2.6s var(--ease) .25s}
html.js.is-loaded .hero__media img{scale:1;filter:none}
.hero__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,13,22,.78) 0%,rgba(15,13,22,.56) 30%,rgba(15,13,22,.14) 52%,rgba(15,13,22,0) 64%)}
.hero__band{position:absolute;left:0;right:0;top:0;height:34%;background:linear-gradient(180deg,rgba(236,124,72,.85) 0%,rgba(236,124,72,.35) 42%,rgba(236,124,72,0) 100%);mix-blend-mode:soft-light;pointer-events:none}
.hero__copy{position:absolute;z-index:2;left:var(--gut);right:var(--gut);top:clamp(96px,14svh,140px);text-shadow:0 2px 22px rgba(12,12,24,.45)}
.hero__who{font-family:var(--ff-min);font-size:13.5px;letter-spacing:.2em;line-height:1.6;color:var(--ink2)}
.hero__ttl{margin-top:20px;font-family:var(--ff-min);font-weight:500;font-feature-settings:"palt"}
.hero__pre{font-size:20px;letter-spacing:.16em;line-height:1.6}
.hero__big{display:block;margin-top:10px;font-size:clamp(34px,10.4vw,48px);line-height:1.46;letter-spacing:.07em}
.mk{display:block;overflow:hidden;padding-block:.04em}
.mk>span{display:block}
html.js .mk>span{transform:translateY(112%);transition:transform 1.7s var(--out)}
html.js.is-loaded .mk>span{transform:none}
html.js .hero__who .mk>span{transition-delay:.5s}
html.js .hero__pre>span{transition-delay:.72s}
html.js .hero__big .mk:nth-child(1)>span{transition-delay:.92s}
html.js .hero__big .mk:nth-child(2)>span{transition-delay:1.1s}
.rule--hero{max-width:236px;margin-top:24px;--d:1.1s}
.hero__scroll{position:absolute;z-index:2;right:var(--gut);bottom:22px;display:flex;flex-direction:column;align-items:center;gap:8px;font-family:var(--ff-it);font-style:italic;font-size:12px;letter-spacing:.14em;line-height:1;color:var(--ink2)}
.hero__scroll i{position:relative;width:1px;height:46px;background:rgba(243,233,215,.24)}
.hero__scroll i::after{content:"";position:absolute;left:-3px;top:0;width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px 2px rgba(231,168,87,.6);animation:fall 2.8s var(--ease) infinite}
@keyframes fall{0%{transform:translateY(-4px);opacity:0}20%,75%{opacity:1}100%{transform:translateY(42px);opacity:0}}
html.js .hero__scroll{opacity:0;transition:opacity 1.2s var(--ease) 2.2s}
html.js.is-loaded .hero__scroll{opacity:1}

/* ---------- はじめに ---------- */
.lead{position:relative;padding:72px 0 16px}
.lead__txt{font-family:var(--ff-min);font-size:21px;line-height:1.85;letter-spacing:.1em;text-wrap:balance}
.facts{margin-top:28px}
.facts li{position:relative;display:flex;flex-wrap:wrap;column-gap:.25em;padding:13px 0 13px 24px;border-top:1px solid var(--line);font-size:16px;line-height:1.8;color:var(--ink2)}
.facts li:last-child{border-bottom:1px solid var(--line)}
.facts li::before{content:"";position:absolute;left:2px;top:calc(13px + .9em - 3px);width:6px;height:6px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px 2px rgba(231,168,87,.45)}
.lead__act{margin-top:34px}
.lead__note{margin-top:14px;font-size:13.5px;line-height:1.8;color:var(--mute);text-align:center}

/* ---------- A 気持ち ---------- */
.feel{padding-bottom:100px}
.voices{margin-top:36px}
.voices li{display:grid;grid-template-columns:36px 1fr;align-items:baseline;padding:24px 0}
.voices li+li{border-top:1px solid var(--line)}
.voices i{font-family:var(--ff-it);font-size:19px;line-height:1;color:var(--amber)}
.voices p{font-family:var(--ff-min);font-size:21px;line-height:1.75;letter-spacing:.08em;text-wrap:balance}
.pic--keys{--ar:4/3;margin:52px 0 0 var(--gut)}
.feel__to{margin-top:60px;font-family:var(--ff-min);font-size:19px;line-height:1.9;letter-spacing:.1em;text-align:center}
.feel__to::after{content:"";display:block;width:1px;height:60px;margin:24px auto 0;background:linear-gradient(var(--amber),rgba(231,168,87,0))}

/* ---------- B 決めていること ---------- */
.rules{padding-top:36px}
.pic--sheet{--ar:4/3;width:calc(100% + var(--gut));margin-left:calc(var(--gut)*-1)}
.pic--sheet figcaption{padding-left:var(--gut)}
.rules__txt{margin-top:64px}
.laws{margin-top:36px}
.laws li{display:grid;grid-template-columns:46px 1fr;column-gap:6px;padding:28px 0 30px;border-top:1px solid var(--line)}
.laws li:last-child{border-bottom:1px solid var(--line)}
.laws i{grid-row:1/3;font-family:var(--ff-it);font-size:30px;line-height:1.15;color:var(--amber)}
.laws h3{font-family:var(--ff-min);font-size:21px;line-height:1.6;letter-spacing:.08em;text-wrap:balance}
.laws p{margin-top:8px;font-size:16px;line-height:1.9;color:var(--ink2)}

/* 小さな鍵盤 */
.kb{margin-top:104px;text-align:center}
.kb__lead{font-family:var(--ff-min);font-size:22px;line-height:1.7;letter-spacing:.12em}
.keys{position:relative;display:flex;width:calc(100% + var(--gut)*2);height:176px;margin:30px calc(var(--gut)*-1) 0;padding:12px 6px 0;border-radius:0;background:linear-gradient(180deg,#2E2027,#18111A);box-shadow:0 34px 60px -30px rgba(0,0,0,.85),0 0 90px -16px rgba(231,168,87,.28),inset 0 1px 0 rgba(255,255,255,.06)}
.keys::before{content:"";position:absolute;left:6px;right:6px;top:7px;height:5px;border-radius:1px;background:linear-gradient(#8C2E37,#5E1D25)}
.kw{position:relative;flex:1;height:100%;margin:0 .5px;border-radius:0 0 6px 6px;background:linear-gradient(180deg,#E3D7C2 0%,#F6EFE2 10%,#F3EADB 86%,#E2D5BF 100%);box-shadow:inset 0 -7px 0 #D5C7AE,0 2px 0 rgba(0,0,0,.4);color:#4A3F52;touch-action:manipulation;-webkit-user-select:none;user-select:none;transition:transform .1s,box-shadow .1s,background .25s}
.kw span{position:absolute;left:0;right:0;bottom:17px;font-family:var(--ff-min);font-size:13px;letter-spacing:0;line-height:1}
.kw.is-do::after{content:"";position:absolute;left:50%;bottom:42px;width:7px;height:7px;margin-left:-3.5px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px 2px rgba(231,168,87,.6)}
.kw.is-on{transform:translateY(2px);box-shadow:inset 0 -3px 0 #D5C7AE,0 0 0 rgba(0,0,0,.4);background:linear-gradient(180deg,#E3D3B6,#F4E2C2 34%,#F2D9AE 100%)}
.kbk{position:absolute;z-index:2;top:12px;left:calc(6px + (100% - 12px) * var(--i) / 8);width:calc((100% - 12px) * .09);height:58%;margin-left:calc((100% - 12px) * -.045);border-radius:0 0 4px 4px;background:linear-gradient(180deg,#2A2633,#15131C 72%,#2C2836);box-shadow:inset 0 -5px 0 #0B0A10,inset 1px 0 0 rgba(255,255,255,.07),0 3px 6px rgba(0,0,0,.5);touch-action:manipulation;-webkit-user-select:none;user-select:none;transition:transform .1s,box-shadow .1s,background .25s}
.kbk.is-on{transform:translateY(2px);box-shadow:inset 0 -2px 0 #0B0A10,0 1px 2px rgba(0,0,0,.5);background:linear-gradient(180deg,#3B302C,#221B1A)}
.keys__fly{position:absolute;z-index:3;top:0;width:10px;height:10px;margin-left:-5px;border-radius:50%;background:var(--amber);box-shadow:0 0 14px 4px rgba(231,168,87,.6);pointer-events:none;animation:fly 1.6s var(--out) forwards}
@keyframes fly{0%{opacity:0;transform:translateY(12px) scale(.4)}15%{opacity:1}100%{opacity:0;transform:translateY(-120px) scale(1)}}
.kb__note{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:18px;font-size:13px;line-height:1.7;color:var(--mute)}
.kb__note i{width:6px;height:6px;border-radius:50%;background:var(--amber);box-shadow:0 0 8px 2px rgba(231,168,87,.5)}

/* ---------- C 半年の進み方（画面を止めて、音符が灯る） ---------- */
.road{padding-bottom:80px}
.road__head .body{max-width:30em}
.road__track{position:relative;margin-top:36px}
.road__in{display:flex;flex-direction:column;gap:16px}
html.js .road__track{height:calc(100vh + 6*72vh)}
html.js .road__pin{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
html.js .road__in{justify-content:center;height:100%;padding-top:66px;padding-bottom:70px}
.pick{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.pick button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:56px;padding:6px 1px;border:1px solid var(--line2);border-radius:12px;font-family:var(--ff-min);font-size:13px;letter-spacing:.02em;white-space:nowrap;line-height:1.3;color:var(--ink2);transition:background-color .5s,border-color .5s,color .5s,box-shadow .5s}
.pick small{font-family:var(--ff-go);font-size:12px;letter-spacing:0;color:var(--mute);white-space:nowrap;transition:color .5s}
.pick button[aria-pressed="true"]{background:rgba(231,168,87,.13);border-color:var(--amber);color:var(--ink);box-shadow:0 0 26px -8px rgba(231,168,87,.55)}
.pick button[aria-pressed="true"] small{color:var(--amber)}
.road__piece{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 12px;font-size:12.5px;line-height:1.6;color:var(--mute)}
.road__piece b{font-family:var(--ff-min);font-weight:500;font-size:17px;letter-spacing:.1em;color:var(--ink)}
.score{position:relative;margin:8px calc(var(--gut)*-1) 0;overflow:hidden;transition:opacity .4s var(--ease)}
.score.is-swap{opacity:0}
.score__cam{width:max-content;transform-origin:0 50%;transition:transform 1.1s cubic-bezier(.25,.8,.25,1)}
.score svg{max-width:none}
.sc-l,.sc-b,.nt-led{fill:none;stroke:rgba(243,233,215,.3);stroke-width:1;vector-effect:non-scaling-stroke}
.sc-b{stroke:rgba(243,233,215,.36)}
.sc-fin{fill:var(--ink);opacity:0;transition:opacity 1.2s var(--ease)}
.sc-dyn{font-family:var(--ff-it);font-style:italic;font-weight:500;fill:var(--amber);opacity:0;transition:opacity 1s var(--ease) .3s}
.nt-h{fill:rgba(27,30,51,0);stroke:rgba(243,233,215,.44);stroke-width:1;vector-effect:non-scaling-stroke;transition:fill .7s var(--ease),stroke .7s var(--ease)}
.nt-g{opacity:0;transform:scale(.3);transform-box:fill-box;transform-origin:center;transition:opacity .9s var(--ease),transform 1.2s var(--out)}
.nt-s{fill:none;stroke:rgba(243,233,215,.42);transition:stroke .7s var(--ease)}
.nt-k{font-family:var(--ff-go);fill:var(--ink);opacity:0;transition:opacity .7s var(--ease)}
.nt.on .nt-h{fill:var(--amber);stroke:var(--amber)}
.nt--L.on .nt-h{fill:var(--sunset);stroke:var(--sunset)}
.nt.on .nt-g{opacity:1;transform:none}
.nt.on .nt-s{stroke:var(--ink)}
.nt.on .nt-k{opacity:.92}
.nt.now .nt-g{animation:now 1.6s var(--out)}
@keyframes now{0%{transform:scale(.3);opacity:0}35%{transform:scale(1.6);opacity:1}100%{transform:none;opacity:1}}
.nt.ping .nt-g{transform:scale(1.8);transition-duration:.12s}
.nt.ping .nt-h{fill:#FFE7BC;stroke:#FFE7BC;transition-duration:.12s}
.score.is-fin .sc-fin,.score.is-fin .sc-dyn{opacity:1}
.score.is-fit .nt-k{opacity:0}
.road__info{display:flex;flex-direction:column;gap:10px}
.road__month{display:flex;align-items:baseline;gap:10px;line-height:1}
.road__mn{display:block;height:1.24em;margin-bottom:-.12em;overflow:hidden;font-family:var(--ff-it);font-style:italic;font-size:56px;line-height:1.24;color:var(--amber)}
.road__mn>span{display:block;transition:transform 1s var(--out)}
.road__mn b{display:block;height:1.24em;padding-right:.08em;font-weight:400}
.road__mt{font-family:var(--ff-min);font-size:16px;letter-spacing:.14em}
.steps{display:grid}
.steps__n{font-size:12.5px;letter-spacing:.14em;line-height:1.6;color:var(--mute)}
.steps h3{font-family:var(--ff-min);font-size:20px;line-height:1.6;letter-spacing:.1em}
.steps h3+p{margin-top:4px;font-size:16px;line-height:1.85;color:var(--ink2);text-wrap:pretty}
.steps li+li{margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}
html.js .steps li{grid-area:1/1;margin:0;padding:0;border:0;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .45s var(--ease),transform .8s var(--out),visibility 0s .45s}
html.js .steps li.is-on{opacity:1;visibility:visible;transform:none;transition:opacity .8s var(--ease) .1s,transform 1s var(--out) .1s}
html.js .steps__n{display:none}
.road__foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:6px}
.ticks{display:flex;align-items:center;gap:3px}
.ticks i{width:3px;height:15px;border-radius:2px;background:rgba(243,233,215,.18);transition:background-color .4s,box-shadow .4s}
.ticks i:nth-child(3n):not(:last-child){margin-right:5px}
.ticks i.on{background:var(--amber);box-shadow:0 0 8px rgba(231,168,87,.55)}
.road__cnt{font-size:12.5px;line-height:1;color:var(--mute)}
.road__cnt b{margin-right:2px;font-family:var(--ff-it);font-weight:400;font-size:19px;color:var(--ink)}
.road__foot .listen{margin-left:auto}
.road__note{margin-top:40px;font-size:14px;line-height:1.95;color:var(--mute)}

/* ---------- D レッスンの様子 ---------- */
.lesson__grid{display:grid;grid-template-columns:1fr 1fr;column-gap:14px;margin-top:48px}
.pic--lesson{--ar:4/5;grid-column:1/-1;width:88%;margin-left:calc(var(--gut)*-1)}
.pic--lesson figcaption{padding-left:var(--gut)}
.pic--hands{--ar:3/4;margin-top:44px}
.pic--corner{--ar:3/4;margin-top:104px}
.pic--hands figcaption,.pic--corner figcaption{padding-left:22px;font-size:13.5px;letter-spacing:.06em}
.pic--hands figcaption::before,.pic--corner figcaption::before{width:12px}

/* ---------- E 値段（明るい紙） ---------- */
.price{padding:64px 0}
.paper{position:relative;background:var(--paper);color:var(--pink);box-shadow:0 40px 90px -40px rgba(0,0,0,.65)}
.paper::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(120% 80% at 50% 0%,rgba(255,255,255,.5),rgba(255,255,255,0) 60%),radial-gradient(90% 70% at 50% 100%,rgba(200,180,150,.18),rgba(200,180,150,0))}
.paper__in{position:relative;max-width:1280px;margin-inline:auto;padding:80px var(--gut) 72px}
.lbl--ink{color:var(--pmute)}
.lbl--ink .lbl__no{border-color:rgba(42,36,56,.3);color:var(--pink)}
.lbl--ink .lbl__it{color:var(--ochre)}
.lbl--ink .lbl__it::before{background:var(--pline)}
.price__h .num{margin-right:.06em;font-family:var(--ff-it);font-weight:400;font-size:1.5em;letter-spacing:.01em;line-height:1}
.price__sub{margin-top:4px;font-family:var(--ff-min);font-size:18px;letter-spacing:.12em;line-height:1.8}
.bill{margin-top:36px;border-top:1px solid var(--pink)}
.bill>div{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:20px 0;border-bottom:1px solid var(--pline)}
.bill>div:nth-last-child(2){border-bottom:0}
.bill dt{font-family:var(--ff-min);font-size:17px;line-height:1.5;letter-spacing:.08em}
.bill dt small{display:block;margin-top:3px;font-family:var(--ff-go);font-size:12.5px;letter-spacing:.03em;color:var(--pmute)}
.bill dd{flex:none;font-size:14px;line-height:1;white-space:nowrap}
.bill dd b{margin-right:3px;font-family:var(--ff-it);font-weight:400;font-size:30px;letter-spacing:.01em}
.bill__sum{position:relative;padding-top:26px!important}
.bill__sum::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;border-top:1px solid var(--pink);border-bottom:3px solid var(--pink)}
.bill__sum dd b{font-size:40px}
.none{margin-top:34px}
.none__t{font-size:12.5px;letter-spacing:.2em;line-height:1.6;color:var(--pmute)}
.none__l{display:flex;flex-wrap:wrap;gap:4px 24px;margin-top:8px}
.none__l li{font-family:var(--ff-min);font-size:17px;line-height:1.9;letter-spacing:.08em}
.none__l s{position:relative;text-decoration:none;color:var(--pmute)}
.none__l s::after{content:"";position:absolute;left:-3px;right:-3px;top:54%;height:1.5px;background:var(--ochre);transform-origin:left}
html.js .none .none__l s::after{transform:scaleX(0);transition:transform 1.1s var(--out) .5s}
html.js .none .none__l li:nth-child(2) s::after{transition-delay:.7s}
html.js .none .none__l li:nth-child(3) s::after{transition-delay:.9s}
html.js .none.is-in .none__l s::after{transform:none}
.pay{margin-top:28px;font-size:16px;line-height:1.9;color:var(--pmute)}

/* ---------- F 先生から ---------- */
.pic--metro{--ar:4/5;width:78%;margin-left:auto;margin-right:calc(var(--gut)*-1)}
.teacher__txt{margin-top:60px}
.letter{margin-top:28px}
.letter p{font-family:var(--ff-min);font-size:16.5px;line-height:2.25;letter-spacing:.06em;text-wrap:pretty}
.letter p+p{margin-top:1.2em}
.sign{display:flex;align-items:baseline;justify-content:flex-end;flex-wrap:wrap;gap:4px 12px;margin-top:30px;line-height:1.4}
.sign small{font-size:12px;letter-spacing:.14em;color:var(--mute)}
.sign b{font-family:var(--ff-min);font-weight:500;font-size:26px;letter-spacing:.2em}
.vows{margin-top:40px;padding-top:20px;border-top:1px solid var(--line)}
.vows li{position:relative;padding:8px 0 8px 24px;font-family:var(--ff-min);font-size:16.5px;line-height:1.8;letter-spacing:.08em}
.vows li::before{content:"";position:absolute;left:2px;top:calc(8px + .9em - 3.5px);width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px 2px rgba(231,168,87,.45)}

/* ---------- G よくある質問 ---------- */
.faq__list{margin-top:36px;border-bottom:1px solid var(--line)}
.faq details{border-top:1px solid var(--line)}
.faq summary{display:grid;grid-template-columns:26px 1fr 14px;align-items:center;gap:10px;min-height:66px;padding:14px 0;cursor:pointer;list-style:none;font-family:var(--ff-min);font-size:17px;line-height:1.7;letter-spacing:.06em}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{justify-self:start;width:11px;height:11px;border-radius:50%;border:1px solid var(--line2);transition:background-color .6s,border-color .6s,box-shadow .9s}
.faq details[open] summary i{background:var(--amber);border-color:var(--amber);box-shadow:var(--glow)}
.faq summary::after{content:"";justify-self:end;width:10px;height:10px;border-right:1px solid var(--ink2);border-bottom:1px solid var(--ink2);transform:translateY(-3px) rotate(45deg);transition:transform .6s var(--out)}
.faq details[open] summary::after{transform:translateY(3px) rotate(225deg)}
.faq__a{padding:0 0 24px 36px}
.faq__a p{font-size:16px;line-height:1.95;color:var(--ink2)}
.faq details[open] .faq__a{animation:qa .8s var(--out)}
@keyframes qa{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- H 体験レッスン ---------- */
.flow{display:grid;grid-template-columns:10fr 10fr 20fr 8fr;gap:4px;margin-top:30px}
.flow li{padding-top:10px;border-top:3px solid var(--line2);font-size:12px;line-height:1.5;color:var(--mute)}
.flow li:nth-child(3){border-top-color:var(--amber)}
.flow b{display:block;font-family:var(--ff-it);font-weight:400;font-size:17px;line-height:1.4;color:var(--ink)}
.trial__form{margin-top:52px}
.slots{display:grid;grid-template-columns:50px repeat(5,minmax(0,1fr));align-items:center;padding:12px 10px 8px;border:1px solid var(--line);border-radius:18px;background:rgba(36,40,68,.55)}
.slots>b{font-family:var(--ff-min);font-weight:500;font-size:15px;line-height:2.4;text-align:center}
.slots__t{font-size:13px;line-height:1;color:var(--ink2)}
.slot{position:relative;display:grid;place-items:center;height:52px}
.slot::before{content:"";width:22px;height:22px;border-radius:50%;border:1.5px solid rgba(231,168,87,.75);transition:background-color .4s,box-shadow .5s,transform .5s var(--out)}
button.slot:hover::before{box-shadow:0 0 14px rgba(231,168,87,.45)}
.slot[aria-pressed="true"]::before{background:var(--amber);border-color:var(--amber);box-shadow:var(--glow);transform:scale(1.12)}
.slot.is-full::before{width:12px;height:1.5px;border:0;border-radius:0;background:rgba(243,233,215,.24)}
.slots__key{display:flex;justify-content:flex-end;gap:18px;margin-top:10px;font-size:12px;line-height:1.6;color:var(--mute)}
.slots__key i{display:inline-block;margin-right:6px}
.slots__key .o{width:11px;height:11px;border-radius:50%;border:1.5px solid rgba(231,168,87,.75);vertical-align:-1px}
.slots__key .x{width:10px;height:1.5px;background:rgba(243,233,215,.3);vertical-align:4px}
.msg{margin-top:24px;padding:20px 22px;border-radius:4px;background:var(--paper);color:var(--pink);box-shadow:0 30px 60px -30px rgba(0,0,0,.7),0 0 70px -24px rgba(231,168,87,.45)}
.msg__t{font-size:12px;letter-spacing:.16em;line-height:1.6;color:var(--pmute)}
.msg__b{margin-top:8px;font-family:var(--ff-min);font-size:16px;line-height:2;letter-spacing:.05em}
.msg__b b{font-weight:700;background:linear-gradient(transparent 60%,rgba(231,168,87,.5) 60%) no-repeat 0 0/100% 100%}
.msg__b b.is-new{animation:mark 1s var(--out)}
@keyframes mark{from{background-size:0 100%}to{background-size:100% 100%}}
.btn--wide{margin-top:24px}
.trial__note{margin-top:12px;font-size:12.5px;line-height:1.7;color:var(--mute);text-align:center}
.tel{display:flex;flex-direction:column;align-items:center;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);text-align:center;line-height:1.6}
.tel span{font-size:12.5px;letter-spacing:.14em;color:var(--mute)}
.tel b{font-family:var(--ff-it);font-weight:400;font-size:30px;letter-spacing:.06em;line-height:1.5}
.tel small{font-size:12px;color:var(--mute)}

/* ---------- I 教室の案内 ---------- */
.pic--ext{--ar:4/5;width:calc(100% + var(--gut)*2);margin-inline:calc(var(--gut)*-1)}
.pic--ext figcaption{padding-left:var(--gut)}
.access__txt{margin-top:56px}
.info{margin-top:30px;border-bottom:1px solid var(--line)}
.info>div{display:grid;grid-template-columns:4.6em 1fr;gap:12px;padding:16px 0;border-top:1px solid var(--line)}
.info dt{font-size:13px;letter-spacing:.16em;line-height:2.1;color:var(--mute)}
.info dd{font-size:16px;line-height:1.9}

/* ---------- 下の帯 ---------- */
.ft{position:relative;padding-top:30px}
.coda{padding-bottom:84px;text-align:center}
.rule--coda{max-width:520px;height:33px;margin:0 auto;--gap:8px;--hg:4px;--nd:10px}
.coda__t{margin-top:28px;font-family:var(--ff-min);font-size:17px;line-height:1.9;letter-spacing:.1em}
.coda .listen{margin-top:18px}
.ft__in{display:flex;flex-direction:column;gap:18px;padding-top:44px;padding-bottom:44px;border-top:1px solid var(--line)}
.ft__brand{display:flex;align-items:center;gap:12px}
.ft__brand span{display:flex;flex-direction:column;gap:6px;line-height:1}
.ft__brand small{font-size:12px;letter-spacing:.14em;color:var(--ink2)}
.ft__brand b{font-family:var(--ff-min);font-weight:500;font-size:24px;letter-spacing:.24em}
.ft__addr{font-size:13px;line-height:2;color:var(--mute)}
.ft__top a{display:inline-block;padding:12px 0;font-size:13px;letter-spacing:.14em;text-decoration:underline;text-underline-offset:6px;text-decoration-color:var(--line2)}
.sample{padding:22px var(--gut) calc(96px + env(safe-area-inset-bottom,0px));background:rgba(8,9,18,.62);border-top:1px solid var(--line);font-size:12px;line-height:1.95;color:var(--mute)}
.sample__lnk{margin-top:6px}
.sample__lnk a{display:inline-block;padding:12px 0;color:var(--ink);text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--amber)}

/* 追いかける灯りの釦と、見本の札 */
.fab{position:fixed;z-index:30;right:14px;bottom:calc(14px + env(safe-area-inset-bottom,0px));display:grid;place-items:center;width:74px;height:74px;border-radius:50%;background:radial-gradient(circle at 50% 38%,#F7CD8E 0%,#E7A857 56%,#C9853A 100%);color:#1B1E33;box-shadow:0 0 0 6px rgba(231,168,87,.14),0 0 36px 6px rgba(231,168,87,.4),0 14px 24px -10px rgba(0,0,0,.6);opacity:0;transform:scale(.6);pointer-events:none;transition:opacity .6s var(--ease),transform .8s var(--out)}
.fab.is-on{opacity:1;transform:none;pointer-events:auto}
.fab span{font-family:var(--ff-min);font-weight:700;font-size:12px;line-height:1.45;letter-spacing:.1em;text-align:center}
.fab::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1px solid rgba(231,168,87,.5);animation:halo 3.2s var(--ease) infinite}
@keyframes halo{0%{transform:scale(.92);opacity:.8}100%{transform:scale(1.32);opacity:0}}
.pill{position:fixed;z-index:30;left:12px;bottom:calc(14px + env(safe-area-inset-bottom,0px));display:flex;align-items:center;gap:4px;padding:7px 10px 7px 9px;border:1px solid var(--line2);border-radius:999px;background:rgba(19,21,39,.8);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font-size:12px;letter-spacing:0;line-height:1.6;color:var(--ink2)}
.pill span{color:var(--amber)}
.pill i{font-style:normal;color:var(--line2)}
.pill a{padding:13px 0;margin:-13px 0;text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(243,233,215,.4)}
html.is-menu .fab,html.is-menu .pill{opacity:0;pointer-events:none}

/* ================= 広い画面 ================= */
@media (min-width:900px){
  html{scroll-padding-top:96px}
  .sec{padding:200px 0}
  .lbl{margin-bottom:32px;font-size:13px}
  .lbl__it{font-size:19px}
  .h2{font-size:clamp(34px,3.1vw,46px)}
  .rule{max-width:440px;margin:32px 0 10px}
  .body{margin-top:30px}

  .hd{height:88px;gap:clamp(22px,2.6vw,44px);padding-right:var(--gut)}
  .mark{width:34px;height:34px}
  .hd__name b{font-size:22px}
  .hd__btn{display:none}
  .hd__nav{display:flex;gap:clamp(16px,2vw,32px);font-size:13.5px;letter-spacing:.12em}
  .hd__nav a{position:relative;padding:8px 0}
  .hd__nav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--amber);transform:scaleX(0);transform-origin:right;transition:transform .6s var(--out)}
  .hd__nav a:hover::after{transform:scaleX(1);transform-origin:left}
  .hd__cta{display:flex;align-items:center;gap:10px;height:46px;padding:0 22px 0 18px;border:1px solid rgba(231,168,87,.7);border-radius:999px;font-family:var(--ff-min);font-size:14.5px;letter-spacing:.12em;transition:background-color .5s,color .5s}
  .hd__cta i{width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px 2px rgba(231,168,87,.6)}
  .hd__cta:hover{background:var(--amber);color:#1B1E33}

  .hero{min-height:680px}
  .hero__media img{object-position:50% 50%}
  .hero__shade{background:linear-gradient(90deg,rgba(17,18,35,.72) 0%,rgba(17,18,35,.36) 36%,rgba(17,18,35,0) 58%),linear-gradient(180deg,rgba(17,18,35,.45) 0%,rgba(17,18,35,0) 24%)}
  .hero__band{height:40%}
  .hero__copy{top:50%;left:7vw;right:auto;transform:translateY(-44%)}
  .hero__who{font-size:15px;letter-spacing:.24em}
  .hero__ttl{margin-top:26px}
  .hero__pre{font-size:clamp(24px,2.1vw,32px)}
  .hero__big{margin-top:14px;font-size:clamp(46px,4.3vw,68px);line-height:1.42}
  .rule--hero{max-width:420px;margin-top:36px}
  .hero__scroll{right:auto;left:50%;transform:translateX(-50%);bottom:30px}

  .lead{padding:150px 0 40px}
  .lead__in{display:grid;grid-template-columns:6fr 5fr;column-gap:9%;align-items:start}
  .lead__txt{grid-row:1/3;padding-top:6px;font-size:clamp(28px,2.6vw,38px);line-height:1.8}
  .facts{margin-top:0}
  .facts li{padding:16px 0 16px 26px;font-size:16px}
  .facts li::before{top:calc(16px + .9em - 3px)}
  .lead__act{margin-top:34px}
  .lead__note{text-align:left;padding-left:30px}

  .feel__in{display:grid;grid-template-columns:5fr 7fr;column-gap:8%;align-items:start}
  .feel__head{position:sticky;top:180px}
  .voices{margin-top:0}
  .voices li{grid-template-columns:56px 1fr;padding:46px 0}
  .voices li:nth-child(2){padding-left:9%}
  .voices li:nth-child(3){padding-left:18%}
  .voices i{font-size:24px}
  .voices p{font-size:clamp(26px,2.3vw,34px)}
  .pic--keys{--ar:16/9;width:62vw;margin:130px 0 0 auto}
  .feel__to{margin-top:130px;font-size:24px}

  .rules{padding-top:80px}
  .rules__in{display:grid;grid-template-columns:6fr 5fr;column-gap:9%;align-items:start}
  .rules__vis{order:2;position:sticky;top:130px}
  .pic--sheet{--ar:4/5;width:calc(100% + var(--gut));margin:0 calc(var(--gut)*-1) 0 0}
  .pic--sheet figcaption{padding-left:0}
  .rules__txt{margin-top:0;padding-top:30px}
  .laws li{grid-template-columns:74px 1fr;padding:42px 0 44px}
  .laws i{font-size:44px}
  .laws h3{font-size:27px}
  .laws p{margin-top:12px;font-size:16px;max-width:28em}
  .kb{margin-top:220px}
  .kb__lead{font-size:30px}
  .keys{width:100%;max-width:600px;height:240px;margin:44px auto 0;padding:14px 14px 0;border-radius:8px 8px 5px 5px}
  .kw{margin:0 1px}
  .keys::before{left:14px;right:14px;top:8px;height:6px}
  .kbk{top:14px;left:calc(14px + (100% - 28px) * var(--i) / 8);width:calc((100% - 28px) * .09);margin-left:calc((100% - 28px) * -.045)}
  .kw span{bottom:24px;font-size:16px}
  .kw.is-do::after{bottom:58px}

  html.js .road__track{height:calc(100vh + 6*80vh)}
  html.js .road__in{align-content:center;padding-top:110px;padding-bottom:60px}
  .road__in{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"piece pick" "score score" "info info";align-items:end;gap:26px 40px}
  .road__top{grid-area:pick}
  .pick{width:560px;gap:8px}
  .pick button{min-height:62px;font-size:15px}
  .pick small{font-size:12px}
  .road__score{display:contents}
  .road__piece{grid-area:piece;align-self:end}
  .road__piece b{font-size:22px}
  .score{grid-area:score;margin:0}
  .road__info{grid-area:info;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:end;column-gap:56px;padding-top:30px;border-top:1px solid var(--line)}
  .road__mn{font-size:120px}
  .road__mt{font-size:19px}
  .steps h3{font-size:27px}
  .steps h3+p{font-size:16px;max-width:30em}
  .road__foot{flex-direction:column;align-items:flex-end;gap:16px}
  .road__foot .listen{margin-left:0}
  .road__note{margin-top:60px;text-align:center}

  .lesson__head{text-align:center}
  .lesson__head .lbl{max-width:440px;margin-inline:auto}
  .lesson__head .rule{margin-inline:auto}
  .lesson__grid{grid-template-columns:repeat(12,minmax(0,1fr));column-gap:24px;margin-top:90px}
  .pic--lesson{--ar:4/5;grid-column:1/7;grid-row:1/3;width:auto;margin:0}
  .pic--lesson figcaption{padding-left:0}
  .pic--hands{--ar:3/4;grid-column:8/11;grid-row:1;margin-top:150px}
  .pic--corner{--ar:4/5;grid-column:10/13;grid-row:2;margin-top:56px}
  .pic--hands figcaption,.pic--corner figcaption{font-size:14.5px}

  .price{padding:150px 0}
  .paper{width:calc(100% - var(--gut)*2);max-width:1180px;margin-inline:auto;border-radius:2px}
  .paper__in{display:grid;grid-template-columns:5fr 6fr;column-gap:10%;align-items:start;padding:120px 110px 110px}
  .price__h{font-size:clamp(34px,3vw,44px)}
  .price__h .num{font-size:1.75em}
  .price__sub{font-size:20px}
  .bill{margin-top:8px}
  .bill>div{padding:26px 0}
  .bill dt{font-size:19px}
  .bill dd b{font-size:36px}
  .bill__sum{padding-top:32px!important}
  .bill__sum dd b{font-size:54px}
  .none{margin-top:44px}
  .none__l li{font-size:19px}

  .teacher__in{display:grid;grid-template-columns:5fr 6fr;column-gap:10%;align-items:start}
  .pic--metro{--ar:2/3;width:auto;margin:0}
  .teacher__txt{margin-top:0;padding-top:70px}
  .letter{margin-top:40px}
  .letter p{font-size:17.5px;line-height:2.4}
  .sign{margin-top:40px}
  .vows{margin-top:52px}
  .vows li{font-size:17.5px}

  .faq__in{display:grid;grid-template-columns:4fr 7fr;column-gap:9%;align-items:start}
  .faq__head{position:sticky;top:160px}
  .faq__list{margin-top:0}
  .faq summary{grid-template-columns:30px 1fr 14px;min-height:84px;padding:20px 0;font-size:19px}
  .faq__a{padding:0 60px 32px 40px}
  .faq__a p{font-size:16px}

  .trial__in{display:grid;grid-template-columns:5fr 6fr;column-gap:9%;align-items:start}
  .trial__txt{position:sticky;top:150px}
  .flow{margin-top:44px}
  .flow li{font-size:13px}
  .trial__form{margin-top:0}
  .slots{grid-template-columns:70px repeat(5,minmax(0,1fr));padding:18px 22px 12px}
  .slots>b{font-size:17px}
  .slots__t{font-size:14px}
  .slot{height:60px}
  .msg{padding:26px 30px}
  .msg__b{font-size:17px}
  .tel{flex-direction:row;flex-wrap:wrap;justify-content:center;column-gap:16px}
  .tel small{flex:0 0 100%}

  .access__in{display:grid;grid-template-columns:6fr 5fr;column-gap:10%;align-items:start}
  .pic--ext{--ar:2/3;order:2;width:auto;margin:0}
  .pic--ext figcaption{padding-left:0}
  .access__txt{margin-top:0;padding-top:90px}
  .info>div{grid-template-columns:6.5em 1fr;padding:20px 0}
  .info dd{font-size:16px}

  .coda{padding:80px 0 130px}
  .rule--coda{max-width:640px}
  .coda__t{font-size:19px}
  .ft__in{flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:space-between;column-gap:40px}
  .sample{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:20px var(--gut) 24px 300px}
  .sample br{display:none}
  .sample__lnk{flex:none;margin-top:0}
  .fab{right:30px;bottom:30px;width:96px;height:96px}
  .fab span{font-size:14px}
  .pill{left:24px;bottom:26px;font-size:12px}
}
@media (min-width:1500px){
  .hero__copy{left:9vw}
}