:root{
  --paper:#E9E7E1;
  --paper-2:#DEDBD3;
  --ink:#131110;
  --ink-60:rgba(19,17,16,.60);
  --ink-30:rgba(19,17,16,.28);
  --track:#173F73;
  --track-lit:#2C6BB8;
  --lane:#FFFFFF;
  --hivis:#E4C43C;
  --disp:"Anton",sans-serif;
  --jp-disp:"Zen Kaku Gothic New",sans-serif;
  --jp:"Noto Sans JP",sans-serif;
  --mono:"Roboto Mono",monospace;
  --gut:clamp(20px,5vw,72px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.85s;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--paper)}
[id]{scroll-margin-top:88px} /* sticky masthead 分のオフセット */
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--jp);font-weight:400;line-height:1.85;
  font-size:15.5px;letter-spacing:.02em;
  -webkit-font-smoothing:antialiased;
}
/* ページ全体のフェードイン（JS 無効時は隠さない／JS が落ちても表示は残る） */
html.js body{animation:pageIn .55s var(--ease) both}
@keyframes pageIn{from{opacity:0}to{opacity:1}}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--track-lit);outline-offset:3px}

.wrap{max-width:1180px;margin:0 auto;padding-inline:var(--gut)}

/* ---------- utility type ---------- */
.eyebrow{
  font-family:var(--mono);font-size:11px;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;
  display:flex;align-items:center;gap:10px;margin:0 0 18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:currentColor;flex:none}
.h2{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(26px,4.2vw,44px);line-height:1.3;
  letter-spacing:.01em;margin:0 0 20px;
}
.lede{font-size:clamp(15px,1.5vw,17px);color:var(--ink-60);max-width:60ch;margin:0}

/* ---------- header ---------- */
.masthead{
  position:sticky;top:0;z-index:50;
  background:rgba(233,231,225,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--ink-30);
  transition:box-shadow .35s var(--ease),background .35s var(--ease);
}
.masthead.is-stuck{background:rgba(233,231,225,.97);box-shadow:0 8px 26px rgba(19,17,16,.09)}
.masthead-in{
  max-width:1180px;margin:0 auto;padding:12px var(--gut);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
/* logo image (transparent PNG) */
.mark{display:flex;align-items:center;gap:10px;flex-shrink:0;line-height:0}
.mark img{display:block;width:auto}
.mark-ss{height:28px}
.mark-word{height:34px}
@media (max-width:640px){.mark{gap:8px}.mark-ss{height:22px}.mark-word{height:28px}}

/* footer: navy wordmark knocked out to white on the dark ground */
.foot-logo{display:block;height:44px;width:auto;filter:brightness(0) invert(1)}
.masthead .btn{padding:9px 18px;font-size:12px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--ink);color:var(--paper);text-decoration:none;
  font-family:var(--jp-disp);font-weight:700;font-size:14px;letter-spacing:.06em;
  padding:15px 30px;border:none;border-radius:0;cursor:pointer;
  transition:background .18s ease,transform .18s ease;
}
.btn:hover{background:var(--track);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 2px var(--ink)}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--lit{background:var(--hivis);color:var(--ink)}
.btn--lit:hover{background:#fff;color:var(--ink)}
.btn i{font-family:var(--mono);font-style:normal;font-size:15px}

/* ---------- HERO ---------- */
.hero{position:relative;background:var(--track);color:var(--paper);overflow:hidden}
/* 背景の指導風景：5秒ごとにフェードで切り替わる（制御は site.js） */
.hero-slides{position:absolute;inset:0;overflow:hidden}
.hero-slides img{
  position:absolute;inset:0;width:100%;height:100%;max-width:none;
  object-fit:cover;object-position:center 40%;
  opacity:0;transform:scale(1.06);
  transition:opacity 1.4s ease,transform 6.5s linear;
}
.hero-slides img.is-active{opacity:1;transform:scale(1)}
/* 文字を読ませるため、紺のベールを左（見出し側）を濃く重ねる */
.hero-slides::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(23,63,115,.93) 0%,rgba(23,63,115,.78) 42%,rgba(23,63,115,.45) 100%),
    linear-gradient(0deg,rgba(19,17,16,.45) 0%,rgba(19,17,16,0) 40%);
}
.hero-dots{
  position:absolute;right:clamp(16px,4vw,48px);bottom:clamp(18px,3vw,32px);
  display:flex;gap:8px;
}
.hero-dots button{
  width:26px;height:24px;padding:0;border:0;cursor:pointer;background:none;
  transition:width .3s var(--ease);
}
.hero-dots button::before{
  content:"";display:block;height:4px;background:rgba(255,255,255,.4);transition:background .3s;
}
.hero-dots button[aria-current="true"]{width:44px}
.hero-dots button[aria-current="true"]::before{background:var(--hivis)}
.hero-lanes{position:absolute;inset:0;pointer-events:none}
.hero-lanes span{
  position:absolute;top:-10%;bottom:-10%;width:2px;background:rgba(255,255,255,.16);
  transform-origin:top center;
}
.hero-in{position:relative;padding-block:clamp(64px,11vw,132px) clamp(52px,8vw,96px)}
.hero .eyebrow{color:var(--hivis)}

.hero h1{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(34px,6.6vw,74px);line-height:1.14;letter-spacing:-.01em;
  margin:0 0 6px;text-wrap:balance;
}
.hero h1 em{font-style:normal;color:var(--hivis)}
.hero .romaji{
  font-family:var(--disp);font-size:clamp(13px,1.5vw,17px);
  letter-spacing:.34em;color:rgba(255,255,255,.5);margin:0 0 30px;
}
.hero .romaji em{
  font-style:normal;color:var(--hivis);
  border-bottom:3px solid var(--hivis);padding-bottom:3px;margin-right:4px;
}
.hero p.sub{
  font-size:clamp(15px,1.7vw,19px);line-height:1.9;max-width:34ch;
  color:rgba(255,255,255,.88);margin:0 0 36px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

/* hero entrance — 読み込み直後に上から順に立ち上がる（CSS だけで完結） */
html.js .hero-in > *{
  animation:heroIn .95s var(--ease) both;
  animation-delay:calc(var(--i,0) * 90ms + 140ms);
}
.hero-in > :nth-child(1){--i:0}
.hero-in > :nth-child(2){--i:1}
.hero-in > :nth-child(3){--i:2}
.hero-in > :nth-child(4){--i:3}
.hero-in > :nth-child(5){--i:4}
.hero-in > :nth-child(6){--i:5}
@keyframes heroIn{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}

html.js .hero-lanes span{
  animation:laneDrop 1.3s var(--ease) both;
  animation-delay:calc(var(--i,0) * 110ms);
}
.hero-lanes span:nth-child(1){--i:0}
.hero-lanes span:nth-child(2){--i:1}
.hero-lanes span:nth-child(3){--i:2}
.hero-lanes span:nth-child(4){--i:3}
.hero-lanes span:nth-child(5){--i:4}
@keyframes laneDrop{from{transform:rotate(4deg) scaleY(0)}to{transform:rotate(4deg) scaleY(1)}}

/* three pillars strip in hero */
.pillars{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:2px solid rgba(255,255,255,.28);margin-top:clamp(46px,7vw,84px);
}
.pillars div{
  padding:20px 18px 4px 0;border-right:1px solid rgba(255,255,255,.18);
}
.pillars div:last-child{border-right:none}
.pillars b{
  display:block;font-family:var(--disp);font-size:clamp(22px,3vw,34px);
  color:var(--hivis);line-height:1;margin-bottom:10px;
}
.pillars span{
  font-family:var(--jp-disp);font-weight:700;font-size:clamp(13px,1.6vw,17px);
  letter-spacing:.03em;
}

/* ---------- section frame ---------- */
section{padding:clamp(64px,9vw,124px) 0}

/* ---------- problem ---------- */
.probs{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1px;margin-top:44px}
.prob{background:var(--paper);padding:32px 26px}
.prob q{
  display:block;font-family:var(--jp-disp);font-weight:700;
  font-size:clamp(17px,2vw,21px);line-height:1.6;quotes:"「" "」";margin-bottom:14px;
}
.prob p{margin:0;font-size:14px;color:var(--ink-60);line-height:1.9}

.pivot{
  margin-top:clamp(48px,7vw,88px);padding:clamp(30px,4vw,48px);
  background:var(--ink);color:var(--paper);
}
.pivot p{
  margin:0;font-family:var(--jp-disp);font-weight:700;
  font-size:clamp(19px,2.9vw,32px);line-height:1.62;text-wrap:balance;
}
.pivot p em{
  font-style:normal;padding-bottom:2px;
  background:linear-gradient(transparent 62%,var(--track-lit) 62%);
  background-repeat:no-repeat;background-size:0 100%;
  transition:background-size .95s var(--ease) .4s;
}
.pivot.in p em{background-size:100% 100%}

/* ---------- LANES (signature) ---------- */
.lanes-sec{background:var(--ink);color:var(--paper)}
.lanes-sec .lede{color:rgba(255,255,255,.62)}
.lanes-sec .eyebrow{color:var(--hivis)}
.track{margin-top:clamp(40px,6vw,64px);border-top:3px solid rgba(255,255,255,.85)}
.lane{
  display:grid;grid-template-columns:112px 1fr;
  border-bottom:3px solid rgba(255,255,255,.85);
  position:relative;
}
.lane + .lane{border-top:0}
.lane::after{ /* dashed inner lane marking */
  content:"";position:absolute;left:112px;right:0;top:0;
  border-top:2px dashed rgba(255,255,255,.14);
}
.lane:first-child::after{display:none}
.lane::before{ /* スクロールで引かれるレーンライン */
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;z-index:2;
  background:var(--hivis);transform:scaleX(0);transform-origin:left center;
  transition:transform 1.1s var(--ease) calc(var(--d,0ms) + 260ms);
}
.lane.in::before{transform:scaleX(1)}
.lane-no{
  background:var(--track);display:flex;align-items:flex-start;justify-content:center;
  padding:26px 0;position:relative;
}
.lane:nth-child(2) .lane-no{background:#1B4D8C}
.lane:nth-child(3) .lane-no{background:#215FAB}
.lane-no b{font-family:var(--disp);font-size:clamp(38px,5vw,58px);line-height:.8;color:#fff}
.lane-no small{
  position:absolute;bottom:16px;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:9px;letter-spacing:.2em;color:rgba(255,255,255,.6);
}
.lane-body{padding:clamp(26px,3.6vw,44px) clamp(20px,3vw,44px)}
.lane-body h3{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(20px,2.8vw,30px);margin:0 0 6px;letter-spacing:.01em;
}
.lane-body .en{
  font-family:var(--disp);font-size:12px;letter-spacing:.28em;
  color:var(--hivis);margin:0 0 20px;
}
.lane-body ul{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.lane-body li{
  padding-left:22px;position:relative;font-size:14.5px;
  color:rgba(255,255,255,.82);line-height:1.85;
}
.lane-body li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:10px;height:2px;background:var(--hivis);
}
.drill{
  margin-top:22px;padding:16px 20px;
  background:rgba(255,255,255,.07);border-left:3px solid var(--hivis);
}
.drill b{
  display:block;font-family:var(--mono);font-size:10px;letter-spacing:.2em;
  color:var(--hivis);margin-bottom:6px;
}
.drill p{margin:0;font-size:14px;color:rgba(255,255,255,.88);line-height:1.8}

/* ---------- coach ---------- */
/* 顔写真を使わない構成。名前そのものをネームプレートに、実績の数字を視覚の核に置く */
.coach{margin-top:clamp(32px,4.5vw,48px)}

.plate{
  border-top:3px solid var(--ink);
  padding:clamp(20px,2.6vw,30px) 0 clamp(18px,2.2vw,24px);
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:clamp(20px,3.5vw,56px);align-items:end;
}
.plate-org{
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--ink-60);
  margin:0 0 14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
}
.plate-org span{
  background:var(--ink);color:var(--paper);font-weight:700;
  padding:3px 8px;letter-spacing:.14em;
}
.plate-nm{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(34px,6.2vw,70px);line-height:1.04;letter-spacing:.02em;margin:0;
}
.plate-en{
  font-family:var(--disp);font-size:clamp(12px,1.4vw,15px);letter-spacing:.3em;
  color:var(--track);margin:12px 0 0;
}
.plate-meta{margin:0;display:grid;gap:12px;align-content:end}
.plate-meta > div{display:grid;grid-template-columns:92px minmax(0,1fr);gap:14px;align-items:baseline}
.plate-meta dt{font-family:var(--mono);font-size:9.5px;letter-spacing:.16em;color:var(--ink-60)}
.plate-meta dd{margin:0;font-size:14px;font-weight:500;line-height:1.7}

/* record：写真の代わりに、数字を顔として見せる */
.record{
  list-style:none;margin:0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--paper);
}
.record li{
  background:var(--track);color:#fff;
  padding:clamp(18px,2.4vw,26px) clamp(14px,1.8vw,22px) clamp(16px,2vw,22px);
}
.record li:nth-child(2){background:#1B4D8C}
.record li:nth-child(3){background:#215FAB}
.record li:nth-child(4){background:#2C6BB8}
.record b{
  font-family:var(--disp);font-size:clamp(40px,6vw,64px);
  line-height:.9;letter-spacing:.01em;
}
.record i{
  font-style:normal;font-family:var(--jp-disp);font-weight:700;
  font-size:15px;color:var(--hivis);margin-left:5px;
}
.record span{
  display:block;margin-top:10px;font-size:12.5px;line-height:1.7;
  color:rgba(255,255,255,.8);
}

.coach-txt{margin-top:clamp(34px,4.5vw,52px)}
.coach-txt > p{max-width:70ch}
.coach-txt h2{margin-top:0}
.coach-txt p{margin:0 0 18px;line-height:1.95}
.coach-txt p:last-child{margin-bottom:0}
.pull{
  border-left:3px solid var(--track);padding:4px 0 4px 22px;margin:26px 0;
  font-family:var(--jp-disp);font-weight:700;font-size:clamp(17px,2vw,21px);line-height:1.7;
}

/* olympians */
.athletes{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1px;margin:26px 0}
.ath{background:var(--paper-2);padding:22px 22px 24px}
.ath-yr{
  font-family:var(--disp);font-size:11px;letter-spacing:.24em;color:var(--track);
  margin:0 0 8px;display:inline-block;border-bottom:2px solid var(--track);padding-bottom:2px;
}
.ath h4{
  font-family:var(--jp-disp);font-weight:900;font-size:clamp(18px,2.2vw,23px);
  margin:0 0 9px;letter-spacing:.03em;
}
.ath p:last-child{margin:0;font-size:13.5px;line-height:1.85;color:var(--ink-60)}

/* ---------- films（YouTube） ---------- */
.films-sec{background:var(--ink);color:var(--paper)}
.films-sec .eyebrow{color:var(--hivis)}
.films-sec .lede{color:rgba(255,255,255,.62)}
.films{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));
  gap:clamp(20px,3vw,34px);margin-top:clamp(36px,5vw,56px);
}
.film{margin:0}
.film-thumb{
  display:block;position:relative;aspect-ratio:16/9;overflow:hidden;
  background:#000;border:2px solid rgba(255,255,255,.2);
  transition:border-color .3s var(--ease);
}
.film-thumb img{
  width:100%;height:100%;object-fit:cover;opacity:.82;
  transition:transform .6s var(--ease),opacity .3s var(--ease);
}
.film-thumb:hover{border-color:var(--hivis)}
.film-thumb:hover img{transform:scale(1.045);opacity:1}
.film-thumb .play{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:58px;height:58px;background:var(--hivis);display:grid;place-items:center;
  transition:transform .3s var(--ease);
}
.film-thumb .play::before{
  content:"";margin-left:4px;border-style:solid;border-width:9px 0 9px 15px;
  border-color:transparent transparent transparent var(--ink);
}
.film-thumb:hover .play{transform:translate(-50%,-50%) scale(1.12)}
.film-frame{display:block;width:100%;aspect-ratio:16/9;border:2px solid var(--hivis)}
.film-no{font-family:var(--disp);font-size:12px;letter-spacing:.28em;color:var(--hivis);margin:18px 0 8px}
.film h3{
  font-family:var(--jp-disp);font-weight:700;font-size:15.5px;line-height:1.7;
  margin:0;letter-spacing:.01em;
}
.films-more{margin-top:clamp(28px,4vw,42px)}

/* ---------- plans ---------- */
.plans-sec{background:var(--paper-2)}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:20px;margin-top:40px}
.plan{
  background:var(--paper);border:2px solid var(--ink);padding:clamp(24px,3vw,32px);
  display:flex;flex-direction:column;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.plans .plan:hover{transform:translateY(-5px);box-shadow:0 16px 34px rgba(19,17,16,.13)} /* .rv.in より詳細度を上げる */
.plan--pick{background:var(--ink);color:var(--paper);position:relative}
.plan--pick::before{
  content:"RECOMMENDED";position:absolute;top:-11px;left:24px;
  background:var(--hivis);color:var(--ink);font-family:var(--mono);font-size:9.5px;
  font-weight:700;letter-spacing:.18em;padding:3px 10px;
}
.plan h3{font-family:var(--jp-disp);font-weight:900;font-size:20px;margin:0 0 4px}
.plan .dur{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--ink-60);margin:0 0 20px}
.plan--pick .dur{color:rgba(255,255,255,.55)}
.plan .fee{font-family:var(--disp);font-size:clamp(28px,3.6vw,38px);line-height:1;margin:0 0 4px}
.plan .fee sup{font-family:var(--jp);font-size:13px;font-weight:500;vertical-align:super;letter-spacing:0}
.plan .note{font-size:12px;color:var(--ink-60);margin:0 0 22px}
.plan--pick .note{color:rgba(255,255,255,.55)}
/* 期間限定バッジ＋通常価格の打ち消し */
.plan .badge{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 10px}
.plan .badge span{
  font-family:var(--disp);font-size:16px;letter-spacing:.04em;color:var(--ink-60);
  text-decoration:line-through;text-decoration-thickness:2px;
}
.plan--pick .badge span{color:rgba(255,255,255,.55)}
.tag{
  display:inline-block;background:var(--hivis);color:var(--ink);
  font-family:var(--mono);font-size:9.5px;font-weight:700;letter-spacing:.18em;
  padding:4px 10px;white-space:nowrap;
}
.plan ul{list-style:none;padding:0;margin:0 0 26px;display:grid;gap:9px;font-size:13.5px;line-height:1.75}
.plan li{padding-left:19px;position:relative}
.plan li::before{content:"";position:absolute;left:0;top:.68em;width:9px;height:2px;background:var(--track)}
.plan--pick li::before{background:var(--hivis)}
.plan .btn{margin-top:auto;justify-content:center}
.fee-note{margin-top:26px;font-size:12.5px;color:var(--ink-60);line-height:1.9}

/* ---------- private lesson（選手個人向け） ---------- */
.private{
  margin-top:clamp(26px,4vw,40px);padding:clamp(26px,3.6vw,44px);
  background:var(--track);color:var(--paper);position:relative;overflow:hidden;
  display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:clamp(20px,4vw,48px);
}
.private::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--hivis)}
.private-kicker{
  font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.22em;
  color:var(--hivis);margin:0 0 12px;display:flex;align-items:center;gap:10px;
}
.private-kicker::before{content:"";width:26px;height:2px;background:currentColor;flex:none}
.private h3{
  font-family:var(--jp-disp);font-weight:900;font-size:clamp(21px,3.1vw,31px);
  margin:0 0 12px;letter-spacing:.01em;
}
.private .txt{margin:0;font-size:14.5px;line-height:1.9;color:rgba(255,255,255,.86);max-width:46ch}
.private-fee{
  border-left:1px solid rgba(255,255,255,.28);padding-left:clamp(20px,3vw,36px);
  display:flex;flex-direction:column;align-items:flex-start;justify-content:center;
}
.private-fee .dur{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:rgba(255,255,255,.6);margin:0 0 8px}
.private-fee .amt{font-family:var(--disp);font-size:clamp(32px,4.2vw,44px);line-height:1;margin:0 0 6px;color:#fff}
.private-fee .amt sup{font-family:var(--jp);font-size:14px;font-weight:500;vertical-align:super;letter-spacing:0}
.private-fee .sm{font-size:12px;line-height:1.8;color:rgba(255,255,255,.6);margin:0 0 20px}

/* ---------- target ---------- */
.targets{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;margin-top:40px}
.target{background:var(--paper);padding:28px 24px}
.target b{display:block;font-family:var(--jp-disp);font-weight:900;font-size:16px;margin-bottom:9px}
.target p{margin:0;font-size:13.5px;color:var(--ink-60);line-height:1.85}
.target p a{color:var(--track);text-decoration:none;border-bottom:1px solid var(--track);transition:color .2s var(--ease),border-color .2s var(--ease)}
.target p a:hover{color:var(--track-lit);border-color:var(--track-lit)}

/* ---------- faq ---------- */
.faq{margin-top:36px;border-top:2px solid var(--ink)}
details{border-bottom:1px solid var(--ink-30)}
summary{
  cursor:pointer;list-style:none;padding:22px 44px 22px 34px;position:relative;
  font-family:var(--jp-disp);font-weight:700;font-size:15.5px;line-height:1.6;
}
summary::-webkit-details-marker{display:none}
summary::before{
  content:"Q";position:absolute;left:0;top:22px;
  font-family:var(--disp);font-size:15px;color:var(--track);
}
summary::after{
  content:"";position:absolute;right:6px;top:31px;width:12px;height:2px;background:var(--ink);
}
summary .v{position:absolute;right:11px;top:26px;width:2px;height:12px;background:var(--ink);transition:transform .2s ease}
details[open] summary .v{transform:rotate(90deg)}
details p{margin:0;padding:0 44px 24px 34px;font-size:14px;color:var(--ink-60);line-height:1.95}
summary{transition:background .25s var(--ease),padding-left .25s var(--ease)}
summary:hover{background:rgba(19,17,16,.045);padding-left:38px}
details[open] > p{animation:faqOpen .45s var(--ease) both}
@keyframes faqOpen{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta{background:var(--track);color:var(--paper);position:relative;overflow:hidden}
.cta .eyebrow{color:var(--hivis)}
.cta h2{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(26px,4.4vw,46px);line-height:1.35;margin:0 0 18px;text-wrap:balance;
}
.cta p{max-width:56ch;color:rgba(255,255,255,.82);margin:0 0 34px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:38px}

/* ---------- footer ---------- */
footer{background:var(--ink);color:rgba(255,255,255,.55);padding:40px 0;font-size:12px}
.foot-in{display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
.foot-admin{margin-left:1.5em;font-size:11px;color:rgba(255,255,255,.4);text-decoration:none}
.foot-admin:hover{color:rgba(255,255,255,.75)}
.foot-in b{font-family:var(--jp-disp);color:var(--paper);font-size:14px;font-weight:900;letter-spacing:.04em}

/* ---------- reveal ---------- */
/* --d = グループ内のずらし時間（JS が付与）。変化形は rv-* で指定 */
.rv{
  opacity:0;transform:translateY(26px);
  transition:
    opacity var(--dur) var(--ease) var(--d,0ms),
    transform var(--dur) var(--ease) var(--d,0ms);
}
.rv.in{opacity:1;transform:none}
.rv-fade{transform:none}
.rv-left{transform:translateX(-26px)}
.rv-scale{transform:translateY(18px) scale(.985)}

@media (max-width:820px){
  .plate{grid-template-columns:1fr;align-items:start;gap:clamp(20px,3vw,26px)}
  .record{grid-template-columns:repeat(2,1fr)}
  .pillars{grid-template-columns:1fr;border-top:0}
  .pillars div{border-right:none;border-top:2px solid rgba(255,255,255,.28);padding:16px 0 10px}
  .pillars b{display:inline-block;margin-right:12px;margin-bottom:0;vertical-align:-2px}
  .lane{grid-template-columns:70px 1fr}
  .lane::after{left:70px}
  .lane-no{padding:18px 0}
  .masthead .btn{display:none}
  .private{grid-template-columns:1fr}
  .private-fee{border-left:0;border-top:1px solid rgba(255,255,255,.28);padding-left:0;padding-top:24px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .rv{opacity:1;transform:none}
  html.js body,html.js .hero-in > *,html.js .hero-lanes span{opacity:1}
  .lane::before{transform:scaleX(1)}
  .pivot p em{background-size:100% 100%}
}
/* =========================================================
   BLOG（一覧・記事ページ）
   ========================================================= */

/* masthead のナビ */
.nav{display:flex;align-items:center;gap:clamp(14px,2vw,26px)}
.nav a:not(.btn){
  font-family:var(--jp-disp);font-weight:700;font-size:13px;letter-spacing:.06em;
  text-decoration:none;color:var(--ink);position:relative;padding-bottom:3px;
}
.nav a:not(.btn)::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--track);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav a:not(.btn):hover::after,.nav a[aria-current]::after{transform:scaleX(1)}

/* ページ見出し（トップの hero の代わり） */
.page-head{background:var(--track);color:var(--paper);position:relative;overflow:hidden}
.page-head-in{position:relative;padding-block:clamp(48px,8vw,92px) clamp(36px,6vw,64px)}
.page-head .eyebrow{color:var(--hivis)}
.page-head h1{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(28px,5vw,52px);line-height:1.25;margin:0 0 14px;letter-spacing:.01em;
}
.page-head p{margin:0;max-width:52ch;color:rgba(255,255,255,.82);font-size:clamp(14px,1.5vw,16px)}

/* 記事一覧 */
.posts{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));
  gap:1px;margin-top:clamp(32px,5vw,48px);
}
.post-card{
  background:var(--paper);padding:28px 26px 30px;display:flex;flex-direction:column;
  text-decoration:none;transition:background .3s var(--ease),transform .35s var(--ease);
}
.posts .post-card:hover,.latest .post-card:hover{background:var(--lane);transform:translateY(-3px)}
.post-meta{display:flex;align-items:center;gap:12px;margin:0 0 12px;flex-wrap:wrap}
.post-date{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--ink-60)}
.post-tag{
  font-family:var(--mono);font-size:9.5px;font-weight:700;letter-spacing:.16em;
  background:var(--ink);color:var(--paper);padding:3px 9px;
}
.post-card h2,.post-card h3{
  font-family:var(--jp-disp);font-weight:900;font-size:clamp(17px,2vw,20px);
  line-height:1.55;margin:0 0 12px;letter-spacing:.01em;
}
.post-card p{margin:0 0 18px;font-size:13.5px;line-height:1.85;color:var(--ink-60)}
.post-more{
  margin-top:auto;font-family:var(--mono);font-size:10.5px;font-weight:700;
  letter-spacing:.18em;color:var(--track);display:flex;align-items:center;gap:8px;
}
.post-more::after{content:"→";transition:transform .3s var(--ease)}
.posts .post-card:hover .post-more::after,.latest .post-card:hover .post-more::after{transform:translateX(5px)}
.posts-empty{
  margin-top:40px;padding:40px 26px;text-align:center;
  border:2px dashed var(--ink-30);color:var(--ink-60);font-size:14px;
}

/* トップページの「最新の記事」 */
.latest{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:1px;margin-top:40px}
.latest:empty{display:none}
.blog-sec{background:var(--paper-2)}
.latest-more{margin-top:clamp(26px,4vw,38px)}

/* 記事本文 */
.article{max-width:760px;margin:0 auto}
.crumb{
  font-family:var(--mono);font-size:10.5px;font-weight:700;letter-spacing:.18em;
  text-decoration:none;color:var(--ink-60);display:inline-flex;align-items:center;gap:8px;
  margin-bottom:30px;transition:color .25s var(--ease);
}
.crumb::before{content:"←";transition:transform .3s var(--ease)}
.crumb:hover{color:var(--ink)}
.crumb:hover::before{transform:translateX(-4px)}
.article-head{border-bottom:2px solid var(--ink);padding-bottom:26px;margin-bottom:34px}
.article-head h1{
  font-family:var(--jp-disp);font-weight:900;
  font-size:clamp(24px,3.8vw,40px);line-height:1.4;margin:14px 0 0;letter-spacing:.01em;
}
.byline{margin:18px 0 0;font-size:13px;color:var(--ink-60)}
.byline b{font-family:var(--jp-disp);font-weight:700;color:var(--ink)}

.prose{font-size:15.5px;line-height:2.05}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 26px}
.prose h2{
  font-family:var(--jp-disp);font-weight:900;font-size:clamp(19px,2.4vw,25px);
  line-height:1.5;margin:48px 0 18px;padding-left:16px;border-left:4px solid var(--track);
}
.prose h3{font-family:var(--jp-disp);font-weight:900;font-size:clamp(16px,2vw,19px);margin:36px 0 14px}
.prose ul,.prose ol{margin:0 0 26px;padding-left:0;list-style:none}
.prose ol{counter-reset:n}
.prose li{position:relative;padding-left:24px;margin-bottom:10px}
.prose ul > li::before{content:"";position:absolute;left:0;top:.85em;width:11px;height:2px;background:var(--track)}
.prose ol > li{counter-increment:n}
.prose ol > li::before{
  content:counter(n);position:absolute;left:0;top:0;
  font-family:var(--disp);font-size:13px;color:var(--track);
}
.prose blockquote{
  margin:34px 0;padding:4px 0 4px 24px;border-left:3px solid var(--hivis);
  font-family:var(--jp-disp);font-weight:700;font-size:clamp(16px,2vw,19px);line-height:1.8;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{margin:0 0 12px;border:1px solid var(--ink-30)}
.prose figure{margin:34px 0}
.prose figcaption{font-size:12px;color:var(--ink-60);line-height:1.8}
.prose hr{border:0;border-top:2px solid var(--ink-30);margin:44px 0}
.prose a{color:var(--track);text-decoration:none;border-bottom:1px solid var(--track);transition:color .2s var(--ease),border-color .2s var(--ease)}
.prose a:hover{color:var(--track-lit);border-color:var(--track-lit)}
.prose strong{font-weight:700}
.prose .lead{font-size:clamp(16px,1.8vw,18px);color:var(--ink-60);line-height:1.95}

/* 記事末尾の講座への導線 */
.article-cta{
  margin-top:clamp(48px,7vw,72px);padding:clamp(26px,3.6vw,40px);
  background:var(--ink);color:var(--paper);
}
.article-cta h2{font-family:var(--jp-disp);font-weight:900;font-size:clamp(19px,2.6vw,26px);line-height:1.5;margin:0 0 12px}
.article-cta p{margin:0 0 24px;font-size:14px;color:rgba(255,255,255,.8);line-height:1.9}

@media (max-width:820px){
  .nav a:not(.btn){font-size:12px}
}

/* ブログ側のページ見出しも、トップの hero と同じ登場の仕方にそろえる */
html.js .page-head-in > *{
  animation:heroIn .95s var(--ease) both;
  animation-delay:calc(var(--i,0) * 90ms + 140ms);
}
.page-head-in > :nth-child(1){--i:0}
.page-head-in > :nth-child(2){--i:1}
.page-head-in > :nth-child(3){--i:2}
@media (prefers-reduced-motion:reduce){
  html.js .page-head-in > *{opacity:1}
}

/* グリッドの区切り線：コンテナ背景ではなくカード側の1pxで描く。
   （カードが半端な数で終わっても、余白が灰色の塊にならない） */
.prob,.ath,.target,.post-card{box-shadow:0 0 0 1px var(--ink-30)}

/* ---------- お問い合わせフォーム ---------- */
.form{margin-top:clamp(32px,4.5vw,44px);padding-top:clamp(28px,4vw,40px);border-top:1px solid rgba(255,255,255,.22)}
.form-note{margin:0 0 22px;font-size:13px;color:rgba(255,255,255,.6)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;margin-bottom:26px}
.form-row--wide{grid-column:1 / -1}
.form-row label{
  display:block;font-family:var(--jp-disp);font-weight:700;font-size:12.5px;
  letter-spacing:.03em;margin-bottom:8px;color:rgba(255,255,255,.9);
}
.form-row .req{
  font-family:var(--mono);font-size:9px;font-weight:700;letter-spacing:.1em;
  color:var(--ink);background:var(--hivis);padding:2px 6px;margin-left:6px;vertical-align:1px;
}
.form-row input,.form-row select,.form-row textarea{
  width:100%;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.3);
  color:#fff;font-family:var(--jp);font-size:14.5px;padding:11px 13px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.form-row textarea{resize:vertical;line-height:1.8}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(255,255,255,.4)}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--hivis);background:rgba(255,255,255,.13);
}
.form-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#fff 50%),linear-gradient(135deg,#fff 50%,transparent 50%);background-position:calc(100% - 20px) center,calc(100% - 15px) center;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-row select option{color:var(--ink)}
.form button[type="submit"]{cursor:pointer}
.form button[type="submit"]:disabled{opacity:.55;cursor:not-allowed;transform:none}
.form-status{margin:16px 0 0;font-size:13.5px;min-height:1.6em}
.form-status[data-state="ok"]{color:var(--hivis);font-weight:700}
.form-status[data-state="err"]{color:#ff9b8a;font-weight:700}
@media (max-width:640px){
  .form-grid{grid-template-columns:1fr}
}

/* ---------- スマホ調整 ---------- */
/* 見出しの改行を文節単位に（対応ブラウザのみ） */
h1,h2,h3,h4,.prob q,.pivot p,.pull,summary{word-break:auto-phrase}

@media (max-width:640px){
  /* ヒーロー・CTA のボタンは縦積み・全幅 */
  .hero-cta,.cta-row{flex-direction:column}
  .hero-cta .btn,.cta-row .btn{justify-content:center;width:100%}
  .hero .romaji{letter-spacing:.2em}
  /* RECOMMENDED ラベルが上のカードに重ならないよう間隔を広げる */
  .plans{gap:34px}
  /* フッター：著作権表記と管理者リンクを分けて縦に並べる */
  .foot-in{flex-direction:column;align-items:flex-start;gap:20px}
  .foot-logo{height:38px;margin-left:-6px}
  .foot-admin{display:block;margin:10px 0 0}
  summary{padding-right:36px}
  details p{padding-right:0}
  /* 講師：履歴のラベルを値の上に縦積み */
  .plate-meta > div{grid-template-columns:1fr;gap:3px}
}

/* 幅の狭い端末（iPhone SE など）：ロゴとナビを1行に収める */
.nav a{white-space:nowrap}
@media (max-width:380px){
  .masthead-in{gap:10px}
  .mark{gap:6px}
  .mark-ss{height:20px}
  .mark-word{height:26px}
  .nav{gap:12px}
}

/* マイページへの入口（スマホでも隠さない。狭い画面ではページ内リンクを隠して1行に収める） */
.nav a.nav-mypage{
  padding:6px 12px;box-shadow:inset 0 0 0 1.5px var(--ink);
  transition:background .18s ease,color .18s ease;
}
.nav a.nav-mypage::after{display:none}
.nav a.nav-mypage:hover,.nav a.nav-mypage[aria-current]{background:var(--ink);color:var(--paper)}
@media (max-width:640px){
  .nav a.nav-hide-sm{display:none}
}