/* SDL 共通スタイル（新TOP v5.2 から抽出・2026-10-02） */
:root{
  --base:#08111a; --text:#1f2933; --muted:#6b7785;
  --logo:#51a4db; --primary:#3ea3ff; --accent:#0e73eb; --accent-dark:#106ac3; --cyan:#7fe4ff;
  --grad-light:#33d8ff; --grad-dark:#006ad3;
  --border:#c1c9d1; --gray:#d9dfe6; --pale:#e9ebf0; --bg:#f2f4f7; --bg2:#f6f8f9; --white:#fff;
  --dark:#1b2530;
  --en:"Figtree",sans-serif;
  --ja:"Hiragino Kaku Gothic ProN","Hiragino Sans","Noto Sans JP",sans-serif;
  --r-lg:2.25rem; --r-md:1.25rem; --r-sm:1rem; --r-min:.5rem;
  --w:1280px; --gut:40px;
  --ease:cubic-bezier(.2,.85,.45,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--ja);color:var(--text);background:var(--white);font-size:15px;line-height:1.9;letter-spacing:.02em;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.5;color:var(--base)}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.wrap{max-width:var(--w);margin:0 auto;padding:0 var(--gut)}
.label{font-family:var(--en);font-weight:500;font-size:1.125rem;color:#aab3bd;letter-spacing:0;line-height:1}
.big{font-family:var(--en);font-weight:500;font-size:7rem;line-height:.9;letter-spacing:-.03em;color:var(--pale)}
.big b{font-weight:500;color:var(--accent)}
.jh{font-size:1.75rem;font-weight:700;line-height:1.7;color:var(--base)}
.lead{font-size:.9375rem;line-height:2;color:var(--text);margin-top:1.25rem}
.btn{display:inline-flex;align-items:center;justify-content:space-between;gap:1.5rem;min-width:220px;padding:.5rem .5rem .5rem 1.75rem;border-radius:999px;background:#fff;border:1px solid rgba(8,17,26,.06);box-shadow:0 .1875rem 1.5rem rgba(8,17,26,.08);font-weight:700;font-size:.9375rem;color:var(--base);transition:.35s var(--ease);white-space:nowrap}
.btn .ar{width:2.5rem;height:2.5rem;border-radius:50%;background:var(--accent);flex:none;position:relative;transition:.35s var(--ease)}
.btn .ar::before,.btn .ar::after{content:"";position:absolute;background:#fff}
.btn .ar::before{width:12px;height:2px;left:14px;top:19px}
.btn .ar::after{width:7px;height:7px;border-right:2px solid #fff;border-top:2px solid #fff;background:none;right:14px;top:16px;transform:rotate(45deg)}
.btn:hover{box-shadow:0 .5rem 2.25rem rgba(8,17,26,.14);transform:translateY(-2px)}
.btn:hover .ar{background:var(--accent-dark)}
.btn.sm{min-width:0;padding:.375rem .375rem .375rem 1.25rem;font-size:.875rem}
.btn.sm .ar{width:2rem;height:2rem}.btn.sm .ar::before{left:10px;top:15px;width:10px}.btn.sm .ar::after{right:11px;top:12px;width:6px;height:6px}
.btn.line{background:transparent;border:1px solid rgba(255,255,255,.7);color:#fff;box-shadow:none;padding:0 1.5rem;height:2.75rem;min-width:0;gap:0;justify-content:center;flex:none;line-height:1}
.btn.line:hover{background:rgba(255,255,255,.15);transform:none}
.chev{display:inline-block;width:.5em;height:.5em;border-right:2px solid var(--accent);border-top:2px solid var(--accent);transform:rotate(45deg);margin-left:.5em;vertical-align:middle}
.tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-top:.625rem}
.tags span{font-size:.75rem;line-height:1;padding:.5rem .75rem;border-radius:999px;background:var(--bg);color:var(--text)}
.fade{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.fade.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.fade{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}
.demo .fade{opacity:1;transform:none;transition:none} /* 書き出し用（?demo=1）: フェード途中を撮らない */
.artcv{position:absolute;inset:0;width:100%;height:100%;display:block;pointer-events:none}

/* ---------- header ---------- */
.hd{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .4s,box-shadow .4s}
.hd .in{display:flex;align-items:center;justify-content:space-between;height:5rem;padding:0 var(--gut);gap:1rem}
.hd .logo{display:flex;align-items:center;gap:.75rem;flex:none}
.hd .logo img{height:2.125rem;width:auto}
.hd .logo .lt{display:flex;flex-direction:column;line-height:1.2;color:#fff;padding-left:.75rem;border-left:1px solid rgba(255,255,255,.45)}
.hd .logo .lt b{font-size:.8125rem;font-weight:700;letter-spacing:.06em}
.hd .logo .lt small{font-family:var(--en);font-size:.625rem;letter-spacing:.08em;opacity:.8;margin-top:.15rem}
.hd.solid .logo .lt,body.menu .hd .logo .lt{color:var(--base);border-left-color:var(--border)}
.hd .logo .w{display:block}.hd .logo .b{display:none}
.gnav{display:flex;align-items:center;gap:.25rem;font-size:.8125rem;font-weight:500;color:#fff}
.gnav>li{position:relative}
.gnav>li>a{display:flex;align-items:center;gap:.375rem;padding:.5rem .875rem;position:relative;height:5rem}
.gnav>li>a::after{content:"";position:absolute;left:50%;bottom:1.375rem;width:4px;height:4px;border-radius:50%;background:currentColor;opacity:0;transform:translateX(-50%);transition:.3s}
.gnav>li:hover>a::after,.gnav>li>a.on::after{opacity:1}
.gnav>li>a .dd{width:.4em;height:.4em;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.8}
.gnav .sub{position:absolute;left:50%;top:calc(5rem - .75rem);transform:translate(-50%,8px);min-width:280px;background:#fff;border-radius:var(--r-md);box-shadow:0 .5rem 2.25rem rgba(8,17,26,.14);padding:1rem;opacity:0;visibility:hidden;transition:.3s var(--ease);color:var(--base)}
.gnav>li:hover .sub,.gnav>li:focus-within .sub{opacity:1;visibility:visible;transform:translate(-50%,0)}
.gnav .sub::before{content:"";position:absolute;left:50%;top:-8px;width:16px;height:16px;background:#fff;transform:translateX(-50%) rotate(45deg);border-radius:3px}
.gnav .sub b{display:block;font-family:var(--en);font-weight:500;font-size:.75rem;color:#aab3bd;padding:.375rem .75rem .25rem}
.gnav .sub a{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.625rem .75rem;border-radius:.625rem;font-size:.875rem;font-weight:700;color:var(--base);white-space:nowrap}
.gnav .sub a:hover{background:var(--bg);color:var(--accent)}
.gnav .sub a small{font-family:var(--en);font-weight:500;font-size:.75rem;color:#aab3bd}
.gnav .sub.wide{min-width:560px;display:grid;grid-template-columns:1fr 1fr;gap:.25rem 1rem}
.gnav .sub.wide b{grid-column:1/-1}
.hd .right{display:flex;align-items:center;gap:1.25rem;flex:none}
.hd .sep{width:1px;height:1.5rem;background:rgba(255,255,255,.5)}
.burger{width:2.5rem;height:2.5rem;border:0;background:none;cursor:pointer;position:relative;padding:0;flex:none}
.burger span{position:absolute;left:8px;width:24px;height:1.5px;background:#fff;transition:.3s var(--ease)}
.burger span:nth-child(1){top:14px}.burger span:nth-child(2){top:20px}.burger span:nth-child(3){top:26px}
.hd.solid{background:rgba(255,255,255,.92);backdrop-filter:blur(.5rem);-webkit-backdrop-filter:blur(.5rem);box-shadow:0 0 2.25rem rgba(0,0,0,.05)}
.hd.solid .gnav{color:var(--base)}
.hd.solid .burger span{background:var(--base)}
.hd.solid .logo .w{display:none}.hd.solid .logo .b{display:block}
.hd.solid .sep{background:var(--border)}
.hd.solid .btn.line{border-color:var(--accent);color:var(--accent)}
.hd.solid .btn.line:hover{background:var(--accent);color:#fff}
body.menu .hd{background:transparent;box-shadow:none;backdrop-filter:none}
body.menu .hd .gnav,body.menu .hd .btn.line{visibility:hidden}
body.menu .hd .logo .w{display:none}body.menu .hd .logo .b{display:block}
body.menu .burger span{background:var(--base)}
body.menu .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.menu .burger span:nth-child(2){opacity:0}
body.menu .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
/* full-screen mega menu (hamburger) */
.mmenu{position:fixed;inset:0;z-index:55;background:linear-gradient(160deg,#f6f9ff,#e3eefc);display:none;padding:7rem var(--gut) 2rem;overflow:auto}
body.menu .mmenu{display:block}
.mmenu .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:2.5rem 2rem;max-width:var(--w);margin:0 auto}
.mmenu .col b{display:flex;align-items:baseline;gap:.75rem;font-size:1.25rem;font-weight:700;color:var(--base);padding-bottom:.75rem;border-bottom:1px solid rgba(8,17,26,.12);margin-bottom:.5rem}
.mmenu .col b small{font-family:var(--en);font-weight:500;font-size:.8125rem;color:var(--accent)}
.mmenu .col a{display:flex;align-items:center;justify-content:space-between;padding:.625rem 0;font-size:.9375rem;font-weight:500;color:var(--text);border-bottom:1px solid rgba(8,17,26,.06)}
.mmenu .col a:hover{color:var(--accent)}
.mmenu .col a i{width:.4em;height:.4em;border-right:1.5px solid var(--accent);border-top:1.5px solid var(--accent);transform:rotate(45deg)}
.mmenu .bottom{max-width:var(--w);margin:2.5rem auto 0;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;border-top:1px solid rgba(8,17,26,.12);padding-top:1.5rem}
.mmenu .bottom .links{display:flex;gap:1.5rem;font-size:.8125rem;color:var(--muted);flex-wrap:wrap}
.mmenu .bottom .copy{font-family:var(--en);font-size:.75rem;color:#aab3bd}

/* ---------- hero ---------- */
.hero{position:relative;min-height:clamp(640px,92vh,880px);display:flex;align-items:center;overflow:hidden;
  background:linear-gradient(115deg,#071f52 0%,#0b3a8f 38%,#0e5fc9 68%,#1a86f0 100%)}
.hero .photo{position:absolute;top:0;bottom:0;right:0;width:56%;z-index:0}
.hero .photo img{width:100%;height:100%;object-fit:cover;object-position:60% 50%}
.hero .photo::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#0b3a8f 0%,rgba(11,58,143,.85) 18%,rgba(11,58,143,.25) 55%,rgba(11,58,143,0) 100%),linear-gradient(180deg,rgba(7,31,82,.35),rgba(7,31,82,0) 30%,rgba(7,31,82,0) 70%,rgba(7,31,82,.55))}
.hero .artcv{z-index:1}
.hero .wrap{position:relative;z-index:2;width:100%;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:2rem;padding-top:6rem;padding-bottom:6rem}
.sp{display:none}
.hero .hl{color:rgba(255,255,255,.85);font-size:1.25rem;letter-spacing:-.01em}
.hero .jt{margin-top:1.25rem;font-size:4.5rem;font-weight:700;line-height:1.28;letter-spacing:0;color:#fff;white-space:nowrap;text-shadow:0 2px 28px rgba(0,20,80,.35)}
.hero .jt em{font-style:normal;color:var(--cyan)}
.hero .jt .q{color:rgba(255,255,255,.62)}
.hero .tag{margin-top:1.75rem;font-size:1.125rem;font-weight:500;color:#fff;line-height:1.9;opacity:.95}
.hero .tag b{color:#fff;font-weight:700}
.hero .rside{position:relative;height:100%;min-height:420px}
.chip{position:absolute;right:0;bottom:0;background:#fff;border-radius:var(--r-sm);padding:1rem 1.25rem;box-shadow:0 .75rem 2.5rem rgba(0,15,60,.4);max-width:320px}
.chip .label{font-size:.75rem;color:var(--accent)}
.chip p{font-size:.875rem;font-weight:700;color:var(--base);line-height:1.6;margin-top:.25rem}
.chip a{display:inline-block;font-size:.8125rem;color:var(--accent);font-weight:700;margin-top:.375rem}
.hero .scroll{position:absolute;z-index:2;left:var(--gut);bottom:2rem;font-family:var(--en);font-size:.75rem;color:#fff;letter-spacing:.1em;display:flex;align-items:center;gap:.75rem}
.hero .scroll::after{content:"";width:48px;height:1px;background:#fff}

/* ---------- sections ---------- */
.sec{padding:10rem 0;position:relative}
.sec.bg{background:linear-gradient(180deg,var(--bg2) 0,#e8ecf0 100%)}
.sec.white{background:#fff}
.sheet{background:#fff;border-radius:var(--r-lg)}
.two{display:grid;grid-template-columns:1.1fr .9fr;gap:4rem;align-items:center}

/* about */
.about{position:relative;background:linear-gradient(180deg,#f2f4f7 40%,rgba(242,244,247,0) 100%),#fff;padding:9rem 0 8rem}
.about .big{margin-top:1rem}
.about .big span{display:block}
.about .big .l2{padding-left:.6em}.about .big .l3{padding-left:.3em}
.about .btn{margin-top:2.25rem}

/* floors circles */
.floors{padding:2rem 0 8rem;position:relative}
.circles{--d:420px;position:relative;height:520px;max-width:1120px;margin:0 auto}
.circ{position:absolute;top:50%;width:var(--d);height:var(--d);border-radius:50%;transform:translateY(-50%);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2.5rem 4.5rem;box-shadow:0 1.5rem 3rem rgba(0,60,150,.18)}
.circ.c1{left:0;background:linear-gradient(135deg,#7fe4ff,#3ea3ff)}
.circ.c2{left:50%;transform:translate(-50%,-50%);background:linear-gradient(135deg,#3ea3ff,#0e73eb);z-index:1}
.circ.c3{right:0;background:linear-gradient(135deg,#106ac3,#0a2f6b)}
.circ .n{font-family:var(--en);font-size:.8125rem;font-weight:500;letter-spacing:.05em;opacity:.85}
.circ .e{font-family:var(--en);font-weight:500;font-size:4rem;line-height:1;letter-spacing:-.03em;margin-top:.5rem}
.circ .j{font-weight:700;font-size:1.125rem;margin-top:.5rem}
.circ p{font-size:.8125rem;line-height:1.75;margin-top:.75rem;opacity:.95}
.circ .tags{justify-content:center;margin-top:.875rem}
.circ .tags span{background:rgba(255,255,255,.2);color:#fff;border:1px solid rgba(255,255,255,.35)}
.dot{position:absolute;top:50%;width:72px;height:72px;border-radius:50%;background:#fff;box-shadow:0 .5rem 1.5rem rgba(0,60,150,.15);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:2;transform:translateY(-50%);font-weight:700;font-size:.75rem;color:var(--accent);text-align:center;line-height:1.3}
.dot small{font-family:var(--en);font-size:.625rem;color:#aab3bd;font-weight:500}
.dot.d1{left:calc(25% + var(--d) / 4 - 36px)}.dot.d2{left:calc(75% - var(--d) / 4 - 36px)}
@media (max-width:1240px){.circles{--d:380px;height:480px}.circ .e{font-size:3.5rem}}
.flowline{display:flex;justify-content:center;gap:.75rem;margin-top:3rem;font-weight:700;font-size:.9375rem;color:var(--base);flex-wrap:wrap;align-items:center}
.flowline span{padding:.5rem 1.25rem;border-radius:999px;background:#fff;box-shadow:0 .1875rem 1.5rem rgba(8,17,26,.06)}
.flowline i{font-style:normal;color:var(--accent)}

/* chat */
.chat .sheet{padding:5rem 5rem 4rem;box-shadow:0 0 2.25rem rgba(0,0,0,.05)}
.chat .head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end}
.chat .big{font-size:5.5rem}
.bubbles{margin-top:3.5rem;display:grid;gap:1.25rem}
.bub{display:flex;align-items:flex-start;gap:1rem}
.bub .who{width:2.5rem;height:2.5rem;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;font-family:var(--en);font-weight:600;font-size:1rem;overflow:hidden}
.bub.q .who{background:var(--bg);color:var(--muted)}
.bub.a .who{background:var(--accent);color:#fff;box-shadow:0 0 0 2px #fff,0 0 0 3px var(--pale)}
.bub.a .who img{width:100%;height:100%;object-fit:cover}
.bub .body{padding:1.125rem 1.5rem;border-radius:var(--r-md);font-size:.9375rem;line-height:1.85;max-width:720px}
.bub.q .body{background:var(--bg);font-weight:700;color:var(--base);border-top-left-radius:var(--r-min)}
.bub.a{flex-direction:row-reverse}
.bub.a .body{background:linear-gradient(135deg,#3ea3ff,#0e73eb);color:#fff;border-top-right-radius:var(--r-min)}
.bub.a .body a{display:inline-block;margin-top:.5rem;font-size:.8125rem;font-weight:700;color:#fff;border-bottom:1px solid rgba(255,255,255,.6)}
.chat .more{margin-top:2.5rem}


/* 1F ask: 問いかけ型の対話 */
.ask .lead b{color:var(--base)}
.dlg{margin-top:3rem;max-width:860px}
.dlg .m{display:flex;gap:1rem;align-items:flex-start;margin-top:1.25rem;animation:pop .45s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.dlg .m{animation:none}}
.dlg .av{width:2.75rem;height:2.75rem;border-radius:50%;flex:none;overflow:hidden;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.6875rem;letter-spacing:.02em}
.dlg .av img{width:100%;height:100%;object-fit:cover}
.dlg .m.k .av{box-shadow:0 0 0 2px #fff,0 0 0 3px var(--pale)}
.dlg .m.u{flex-direction:row-reverse}
.dlg .m.u .av{background:var(--bg);color:var(--muted)}
.dlg .bd{padding:1.125rem 1.5rem;border-radius:var(--r-md);font-size:1rem;line-height:1.85;max-width:640px}
.dlg .m.k .bd{background:linear-gradient(135deg,#3ea3ff,#0e73eb);color:#fff;border-top-left-radius:var(--r-min);font-weight:500}
.dlg .m.k.echo .bd{background:#fff;color:var(--base);border:1.5px solid #bcd6ff}
.dlg .m.u .bd{background:var(--bg);color:var(--base);font-weight:700;border-top-right-radius:var(--r-min)}
.dlg .qn{display:block;font-family:var(--en);font-weight:600;font-size:.75rem;letter-spacing:.06em;opacity:.8;margin-bottom:.25rem}
.dlg .typing .bd{display:flex;gap:.3rem;padding:1.125rem 1.25rem}
.dlg .typing .bd i{width:.45rem;height:.45rem;border-radius:50%;background:#fff;opacity:.5;animation:blink 1s infinite}
.dlg .typing .bd i:nth-child(2){animation-delay:.15s}.dlg .typing .bd i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,100%{opacity:.3}50%{opacity:1}}
.dlg .opts{display:flex;flex-wrap:wrap;gap:.625rem;margin:1rem 0 0 3.75rem;animation:pop .45s var(--ease)}
.dlg .opts button{font:inherit;font-weight:700;font-size:.9375rem;line-height:1.5;text-align:left;padding:.75rem 1.25rem;border-radius:999px;border:1.5px solid var(--accent);background:#fff;color:var(--accent);cursor:pointer;transition:.25s var(--ease)}
.dlg .opts button:hover,.dlg .opts button:focus-visible{background:var(--accent);color:#fff;outline:none}
.dlg .end{margin-top:2.5rem;background:linear-gradient(180deg,#f6f9ff,#eaf2fc);border-radius:var(--r-lg);padding:2.5rem;animation:pop .6s var(--ease)}
.dlg .end .jh{font-size:1.5rem}
.dlg .path{list-style:none;margin:1.5rem 0 0;padding:0;counter-reset:q;border-top:1px solid var(--border)}
.dlg .path li{counter-increment:q;display:grid;grid-template-columns:12rem 1fr;gap:1rem;padding:.75rem 0;border-bottom:1px solid var(--pale);font-size:.9375rem}
.dlg .path li small{font-size:.8125rem;color:var(--muted)}
.dlg .path li small::before{content:"Q" counter(q) "　";font-family:var(--en);font-weight:600;color:var(--accent)}
.dlg .path li b{color:var(--base)}
.dlg .rt{margin-top:2rem;font-weight:700;font-size:1rem;color:var(--base)}
.dlg .recs{margin-top:.75rem;display:grid;gap:.5rem}
.dlg .recs a{display:flex;justify-content:space-between;align-items:center;gap:1rem;background:#fff;border-radius:var(--r-sm);padding:1rem 1.25rem;font-weight:700;font-size:.9375rem;color:var(--base);box-shadow:0 .1875rem 1.5rem rgba(8,17,26,.06);transition:.3s var(--ease)}
.dlg .recs a:hover{transform:translateY(-2px);color:var(--accent)}
.dlg .recs a small{font-family:var(--en);font-weight:500;font-size:.75rem;color:#aab3bd;white-space:nowrap}
.dlg .act{margin-top:2rem;display:flex;flex-wrap:wrap;gap:.75rem;align-items:center}
.dlg .reset{font:inherit;font-size:.875rem;font-weight:700;color:var(--muted);background:none;border:0;cursor:pointer;text-decoration:underline;text-underline-offset:3px;padding:.5rem}
.nos{margin-top:2rem;line-height:2}

/* learn: テーマ × 回路理論／電磁気学 */
.learn .head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end}
.learn .head p{font-size:.9375rem;line-height:2}
.cmp{margin-top:3.5rem;border-top:1px solid var(--border)}
.cmp-h{display:grid;grid-template-columns:200px 1fr 1.3fr;gap:2rem;padding:1rem 0;font-family:var(--en);font-weight:500;font-size:.8125rem;color:#aab3bd}
.cmp-h span:nth-child(2){color:var(--muted)}.cmp-h span:nth-child(3){color:var(--accent)}
.cmp-r{display:grid;grid-template-columns:200px 1fr 1.3fr;gap:2rem;padding:1.5rem 0;border-top:1px solid var(--pale);font-size:.9375rem;line-height:1.85;color:var(--text);transition:.3s}
.cmp-r:hover{background:var(--bg2)}
.cmp-r .t{font-weight:700;font-size:1.25rem;color:var(--base);display:flex;gap:.75rem;align-items:baseline}
.cmp-r .t small{font-family:var(--en);font-weight:500;font-size:.8125rem;color:var(--accent)}
.cmp-r span:nth-child(2){color:var(--muted)}
.cmp-r span:nth-child(3){color:var(--base);font-weight:500;position:relative;padding-right:2rem}
.cmp-r span:nth-child(3) .chev{position:absolute;right:.5rem;top:.7em}
.learn .more{display:flex;justify-content:center;margin-top:3rem}

/* articles */
.arts{background:linear-gradient(180deg,var(--bg2) 0,#e8ecf0 100%)}
.arts .head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end}
.arts .head p{font-size:.9375rem;line-height:2}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.75rem;margin-top:4rem}
.card{background:#fff;border-radius:var(--r-md);padding:1rem 1rem 1.5rem;box-shadow:0 .1875rem 2.25rem rgba(8,17,26,.08);border:1px solid rgba(8,17,26,.04);transition:.35s var(--ease);display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 1rem 3rem rgba(8,17,26,.14)}
.card .ph{aspect-ratio:3/2;border-radius:var(--r-sm);overflow:hidden;background:var(--bg);position:relative}
.card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.card:hover .ph img{transform:scale(1.04)}
.card .ph .split{display:grid;grid-template-columns:1fr 1fr;height:100%;gap:2px}
.card .ph .split3{display:grid;grid-template-columns:1fr 1fr 1fr;height:100%;gap:2px}
.card .ph .num{position:absolute;right:.75rem;bottom:.75rem;background:rgba(255,255,255,.92);border-radius:var(--r-min);font-family:var(--en);font-weight:600;font-size:.8125rem;padding:.375rem .625rem;color:var(--base)}
.card .bd{padding:0 .5rem}
.card h3{font-size:1.125rem;line-height:1.6;margin-top:1.125rem}
.card h3 .chev{margin-left:.4em}
.card p{font-size:.875rem;color:var(--text);margin-top:.375rem}
.card .cat{font-size:.8125rem;color:var(--accent);font-weight:700;margin-top:.5rem}
.arts .more{display:flex;justify-content:center;margin-top:4rem}

/* process (blue) */
.proc{position:relative;color:#fff;background:linear-gradient(120deg,#3ea3ff 0%,#1a7ff0 45%,#0d5fc7 100%);padding:0 0 10rem;margin-top:-4rem;overflow:hidden}
.proc::before{content:"";position:absolute;left:0;right:0;top:0;height:8rem;background:#e8ecf0;border-radius:0 0 var(--r-lg) var(--r-lg);z-index:2}
.proc .artcv{z-index:0;opacity:.9}
.proc .wrap{position:relative;z-index:1;padding-top:14rem}
.proc .big{color:rgba(255,255,255,.35)}
.proc .big b{color:#fff}
.proc .sub{margin-top:1.5rem;font-size:.9375rem;line-height:2;max-width:620px;color:rgba(255,255,255,.92)}
.steps{margin-top:4rem;border-top:1px solid rgba(255,255,255,.3)}
.step{display:grid;grid-template-columns:5rem 1fr 1.2fr 3rem;gap:2rem;align-items:center;padding:2rem 0;border-bottom:1px solid rgba(255,255,255,.3)}
.step .no{font-family:var(--en);font-weight:500;font-size:1.25rem;opacity:.8}
.step .name{font-family:var(--en);font-weight:500;font-size:2.75rem;line-height:1;letter-spacing:-.02em}
.step .name small{display:block;font-family:var(--ja);font-size:.9375rem;font-weight:700;letter-spacing:.02em;margin-top:.5rem;opacity:.95}
.step p{font-size:.875rem;line-height:1.8;color:rgba(255,255,255,.9)}
.step .ar{width:2.5rem;height:2.5rem;border-radius:50%;border:1px solid rgba(255,255,255,.6);position:relative;justify-self:end}
.step .ar::after{content:"";position:absolute;width:7px;height:7px;border-right:1.5px solid #fff;border-top:1.5px solid #fff;transform:rotate(45deg);left:14px;top:16px}
.proc .quote{margin-top:4rem;font-size:1.375rem;font-weight:700;line-height:1.9;max-width:860px}
.proc .quote em{font-style:normal;background:rgba(255,255,255,.18);padding:0 .35em;border-radius:.375rem}

/* seminar */
.sem{background:#fff;position:relative}
.sem .sheet{background:linear-gradient(180deg,#f6f8f9,#e8ecf0);padding:5rem;display:grid;grid-template-columns:1fr 1fr;gap:4rem}
.sem .big{font-size:5.5rem}
.sem .pts{margin-top:1.5rem;display:grid;gap:.5rem;font-weight:700;font-size:1.0625rem;color:var(--base)}
.sem .pts li{display:flex;gap:.75rem;align-items:center}
.sem .pts li::before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--accent)}
.themes{background:#fff;border-radius:var(--r-md);padding:2.25rem 2.5rem;box-shadow:0 0 2.25rem rgba(0,0,0,.05)}
.themes .label{font-size:.9375rem}
.themes ol{list-style:none;margin:1rem 0 0;padding:0;counter-reset:t}
.themes li{counter-increment:t;display:flex;gap:1.25rem;align-items:baseline;padding:1rem 0;border-top:1px solid var(--pale);font-weight:700;font-size:1rem;color:var(--base)}
.themes li::before{content:counter(t,decimal-leading-zero);font-family:var(--en);font-weight:500;color:var(--accent);font-size:.9375rem}
.themes .note{margin-top:1rem;font-size:.75rem;color:var(--muted)}

/* consult */
.cons{overflow:hidden}
.cons .artcv{z-index:0;opacity:.55}
.cons .wrap{position:relative;z-index:1}
.cons .grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;margin-top:3.5rem;align-items:start}
.story{background:#fff;border-radius:var(--r-lg);padding:3rem;box-shadow:0 0 2.25rem rgba(0,0,0,.05)}
.story .h{font-size:1.75rem;font-weight:700;line-height:1.5;color:var(--base)}
.story .h em{font-style:normal;font-family:var(--en);font-weight:500;font-size:4.5rem;color:var(--accent);line-height:1;vertical-align:-.1em;letter-spacing:-.03em}
.story p{margin-top:1.25rem;font-size:.9375rem;line-height:2}
.story p b{color:var(--base)}
.story .src{margin-top:1rem;font-family:var(--en);font-size:.75rem;color:#aab3bd}
.cans{display:grid;grid-template-columns:1fr 1fr;gap:0 1.5rem;margin-top:1.25rem}
.cans li{padding:.75rem 0;border-bottom:1px solid var(--pale);font-weight:700;font-size:.9375rem;color:var(--base);display:flex;gap:.625rem;align-items:center}
.cans li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.cons .after{margin-top:1.5rem;font-size:.9375rem;line-height:2}
.cons .after b{color:var(--base)}
.cons .btn{margin-top:1.75rem}

/* profile */
.prof{background:#fff}
.prof .grid{display:grid;grid-template-columns:380px 1fr;gap:5rem;align-items:center}
.prof .photo{aspect-ratio:4/5;border-radius:var(--r-lg);overflow:hidden;background:#dfe9f5;position:relative;box-shadow:0 1rem 3rem rgba(8,17,26,.12)}
.prof .photo img{width:100%;height:100%;object-fit:cover;object-position:50% 20%}
.prof .photo span{position:absolute;left:1rem;bottom:1rem;font-family:var(--en);font-size:.6875rem;color:#fff;background:rgba(8,17,26,.55);padding:.25rem .5rem;border-radius:.375rem}
.prof .big{font-size:4.5rem}
.prof .name{font-size:2rem;margin-top:1.25rem}
.prof .name small{display:block;font-size:.875rem;font-weight:500;color:var(--muted);margin-top:.25rem}
.prof .msg{margin-top:1.5rem;font-size:.9375rem;line-height:2.1}
.prof .msg b{color:var(--base)}
.prof .hist{margin-top:1.5rem;font-size:.8125rem;color:var(--muted);line-height:1.9}
.prof .adv{margin-top:2.25rem;padding-top:1.5rem;border-top:1px solid var(--pale)}
.prof .adv ul{margin-top:.75rem;display:grid;gap:.5rem}
.prof .adv li{display:grid;grid-template-columns:7rem 1fr;gap:1rem;font-size:.875rem;line-height:1.8}
.prof .adv li b{color:var(--base);font-size:1rem}
.prof .adv p{margin-top:.75rem;font-size:.8125rem;color:var(--muted)}
.prof .motto{display:inline-block;margin-top:1.5rem;padding:.625rem 1.25rem;border-radius:999px;background:var(--bg);font-weight:700;font-size:.9375rem;color:var(--base)}

/* contact */
.cta{background:linear-gradient(180deg,#f6f8f9,#e8ecf0)}
.cta .head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end}
.trouble{margin-top:3rem;display:grid;grid-template-columns:1fr 1fr;gap:.75rem}
.trouble li{display:flex;gap:1rem;align-items:center;background:#fff;border-radius:var(--r-sm);padding:1.125rem 1.5rem;font-weight:700;font-size:.9375rem;color:var(--base);cursor:pointer;box-shadow:0 0 2.25rem rgba(0,0,0,.04);transition:.3s}
.trouble li::before{content:"";width:1.375rem;height:1.375rem;border-radius:50%;border:1.5px solid var(--border);flex:none;transition:.3s}
.trouble li.on::before{background:var(--accent);border-color:var(--accent);box-shadow:inset 0 0 0 4px #fff}
.trouble li:hover{transform:translateY(-2px)}
.cta .close{margin-top:3rem;display:flex;align-items:center;gap:2.5rem;flex-wrap:wrap}
.cta .close p{font-size:1.375rem;font-weight:700;color:var(--base)}
.cta .tel{font-family:var(--en);font-size:.75rem;color:var(--muted)}
.cta .tel b{display:block;font-size:1.5rem;font-weight:600;color:var(--base);letter-spacing:.02em}

/* footer */
.ft{background:var(--dark);color:#fff;padding:5rem 0 3rem;overflow:hidden;position:relative}
.ft .artcv{z-index:0;opacity:.7}
.ft .marq,.ft .wrap,.ft .totop{position:relative;z-index:1}
.ft .marq{white-space:nowrap;font-family:var(--en);font-weight:500;font-size:7.5rem;line-height:1;letter-spacing:-.03em;color:#fff;opacity:.95;display:flex;gap:1.5rem;animation:marq 40s linear infinite}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.ft .marq{animation:none}}
.ft .grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:3rem;margin-top:6rem;align-items:start}
.ft .logo{display:flex;align-items:center;gap:.75rem}
.ft .logo img{height:2.25rem;width:auto}
.ft .logo .lt{display:flex;flex-direction:column;line-height:1.2;padding-left:.75rem;border-left:1px solid rgba(255,255,255,.35)}
.ft .logo .lt b{font-size:.8125rem;font-weight:700;letter-spacing:.06em}
.ft .logo .lt small{font-family:var(--en);font-size:.625rem;letter-spacing:.08em;opacity:.7;margin-top:.15rem}
.ft .addr{margin-top:1.5rem;font-size:.8125rem;line-height:1.9;color:rgba(255,255,255,.85)}
.ft nav{display:grid;gap:.625rem;font-size:.8125rem;font-weight:500}
.ft nav b{font-family:var(--en);font-weight:500;font-size:.75rem;color:rgba(255,255,255,.5);margin-bottom:.25rem}
.ft nav a{opacity:.9}.ft nav a:hover{opacity:1}
.ft .copy{margin-top:4rem;padding-top:1.5rem;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;font-family:var(--en);font-size:.75rem;color:rgba(255,255,255,.6);flex-wrap:wrap;gap:.5rem}
.ft .copy .mock{color:#7fe4ff}
.totop{position:absolute;right:var(--gut);bottom:7rem;width:3rem;height:3rem;border-radius:50%;border:1px solid rgba(255,255,255,.5);display:flex;align-items:center;justify-content:center}
.totop::after{content:"";width:8px;height:8px;border-left:1.5px solid #fff;border-top:1.5px solid #fff;transform:rotate(45deg);margin-top:4px}

/* floating banner */
.fbn{position:fixed;right:1.5rem;bottom:1.5rem;z-index:45;width:360px;border-radius:var(--r-md);overflow:hidden;background:linear-gradient(135deg,#0b3a8f,#1a86f0);color:#fff;box-shadow:0 1rem 3rem rgba(0,15,60,.35);transform:translateY(140%);transition:.5s var(--ease);display:grid;grid-template-columns:1fr 112px}
.fbn.show{transform:none}
.fbn.hide{display:none}
.fbn .tx{padding:1.125rem 1.25rem}
.fbn .tx small{display:block;font-family:var(--en);font-size:.6875rem;letter-spacing:.1em;opacity:.85}
.fbn .tx b{display:block;font-size:1rem;line-height:1.5;margin-top:.25rem}
.fbn .tx span{display:block;font-size:.75rem;opacity:.9;margin-top:.25rem}
.fbn .tx a{display:inline-flex;align-items:center;gap:.5rem;margin-top:.625rem;font-size:.8125rem;font-weight:700;background:#fff;color:var(--accent);padding:.5rem .875rem;border-radius:999px}
.fbn .im{position:relative}
.fbn .im img{width:100%;height:100%;object-fit:cover}
.fbn .x{position:absolute;right:.375rem;top:.375rem;width:1.75rem;height:1.75rem;border-radius:50%;background:rgba(8,17,26,.55);border:0;color:#fff;font-size:1rem;line-height:1;cursor:pointer}

/* fixed SP CTA */
.fcta{position:fixed;left:1rem;right:1rem;bottom:calc(1rem + env(safe-area-inset-bottom));z-index:50;display:none;gap:.5rem;transform:translateY(140%);transition:.4s var(--ease)}
.fcta.show{transform:none}
.fcta .btn{flex:1;min-width:0;justify-content:space-between;padding-left:1.25rem}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .big{font-size:5.5rem}
  .hero .jt{font-size:3.25rem}
  .hero .wrap{grid-template-columns:1fr}
  .hero .rside{min-height:120px}
  .hero .photo{width:100%;opacity:.55}
  .hero .photo::after{background:linear-gradient(90deg,#0b3a8f 0%,rgba(11,58,143,.6) 50%,rgba(11,58,143,.2) 100%)}
  .circles{height:auto;display:grid;grid-template-columns:1fr;gap:1.5rem;justify-items:center}
  .circ{position:static;transform:none;width:360px;height:360px;padding:2.5rem}
  .circ.c2{transform:none}
  .dot{display:none}
  .cards{grid-template-columns:1fr 1fr}
  .gnav{display:none}
  .mmenu .cols{grid-template-columns:1fr 1fr}
  .ft .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  :root{--gut:20px}
  body{font-size:14px}
  .sec{padding:5rem 0}
  .big{font-size:3.75rem}
  .jh{font-size:1.375rem}
  .hd .in{height:4.25rem}
  .hd .logo .lt b{font-size:.75rem}
  .hd .logo .lt small{display:none}
  .hd .right .btn{display:none}.hd .sep{display:none}
  .mmenu{padding-top:5.5rem}
  .mmenu .cols{grid-template-columns:1fr;gap:1.5rem}
  .hero{min-height:0}
  .hero .wrap{padding-top:6.5rem;padding-bottom:4rem;gap:1.5rem}
  .hero .hl{font-size:1rem}
  .hero .jt{font-size:2.375rem;line-height:1.35;white-space:normal}
  .sp{display:inline}
  .hero .tag{font-size:.9375rem;margin-top:1rem}
  .hero .rside{min-height:0;height:auto;margin-top:.5rem}
  .chip{position:static;max-width:100%}
  .hero .scroll{display:none}
  .two{grid-template-columns:1fr;gap:2rem}
  .about{padding:5rem 0 4rem}
  .circ{width:310px;height:310px;padding:1.5rem 2rem}
  .circ .e{font-size:3rem}
  .circ p{font-size:.75rem;margin-top:.5rem}
  .circ .tags{display:none}
  .flowline{font-size:.875rem;gap:.5rem}
  .chat .sheet{padding:2.5rem 1.25rem;border-radius:var(--r-md)}
  .chat .head,.arts .head,.cta .head,.learn .head{grid-template-columns:1fr;gap:1rem}
  .cmp-h{display:none}
  .cmp-r{grid-template-columns:1fr;gap:.5rem;padding:1.25rem 0}
  .cmp-r span:nth-child(2)::before{content:"回路理論では";display:block;font-family:var(--en);font-size:.75rem;color:#aab3bd}
  .cmp-r span:nth-child(3)::before{content:"電磁気学では";display:block;font-family:var(--en);font-size:.75rem;color:var(--accent)}
  .cmp-r span:nth-child(3){padding-right:0}
  .cmp-r span:nth-child(3) .chev{display:none}
  .chat .big,.sem .big{font-size:3.75rem}
  .bub .body{font-size:.875rem;padding:.875rem 1.125rem}
  .dlg{margin-top:2rem}
  .dlg .av{width:2.25rem;height:2.25rem;font-size:.625rem}
  .dlg .bd{font-size:.9375rem;padding:.875rem 1.125rem}
  .dlg .opts{margin-left:0}
  .dlg .opts button{width:100%;border-radius:var(--r-sm)}
  .dlg .end{padding:1.75rem 1.25rem;border-radius:var(--r-md)}
  .dlg .path li{grid-template-columns:1fr;gap:.125rem}
  .bub .who{width:2rem;height:2rem;font-size:.875rem}
  .cards{grid-template-columns:1fr;gap:1.25rem}
  .proc{margin-top:-2rem;padding-bottom:5rem}
  .proc::before{height:4rem;border-radius:0 0 var(--r-md) var(--r-md)}
  .proc .wrap{padding-top:8rem}
  .step{grid-template-columns:3rem 1fr;gap:.5rem 1rem;padding:1.5rem 0}
  .step .name{font-size:2rem}
  .step p{grid-column:2}
  .step .ar{display:none}
  .proc .quote{font-size:1.125rem}
  .sem .sheet{grid-template-columns:1fr;padding:2.5rem 1.5rem;gap:2rem;border-radius:var(--r-md)}
  .themes{padding:1.5rem 1.25rem}
  .cons .grid{grid-template-columns:1fr;gap:2rem}
  .story{padding:2rem 1.5rem;border-radius:var(--r-md)}
  .story .h{font-size:1.375rem}.story .h em{font-size:3.25rem}
  .cans{grid-template-columns:1fr}
  .prof .grid{grid-template-columns:1fr;gap:2rem}
  .prof .photo{max-width:260px;aspect-ratio:1}
  .prof .big{font-size:3.25rem}
  .prof .name{font-size:1.625rem}
  .trouble{grid-template-columns:1fr}
  .cta .close{gap:1.25rem}
  .cta .close p{font-size:1.125rem}
  .ft{padding:3rem 0 8rem}
  .ft .marq{font-size:4.5rem}
  .ft .grid{grid-template-columns:1fr;gap:1.75rem;margin-top:3rem}
  .totop{display:none}
  .fbn{left:0;right:0;bottom:0;width:auto;border-radius:var(--r-md) var(--r-md) 0 0;grid-template-columns:1fr 96px}
  .fbn .tx{padding:.875rem 1rem}
  .fcta{display:flex}
  body.bn .fcta{display:none}
  body.menu .fcta,body.menu .fbn{display:none}
}

.cards .card.sample{grid-column:span 2}.cards .card.sample .ph{aspect-ratio:auto;height:260px}@media (max-width:1080px){.cards .card.sample{grid-column:1/-1}}
/* ---------- v5: どこからでも入れる入口 ---------- */
.entry{position:relative;z-index:3;padding:3rem 0 1rem;background:#fff}
.entry .lbl{display:flex;align-items:baseline;gap:1rem;color:var(--base);margin-bottom:1.25rem}
.entry .lbl b{color:var(--accent)}
.entry .lbl b{font-family:var(--en);font-weight:500;font-size:1rem;letter-spacing:.02em}
.entry .lbl span{font-size:.875rem;opacity:.85}
.ents{display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:1rem}
.ent{display:flex;flex-direction:column;background:#fff;border-radius:var(--r-md);padding:1.5rem 1.5rem 1.25rem;box-shadow:0 .75rem 2.5rem rgba(8,17,26,.14);transition:.35s var(--ease);position:relative}
.ent:hover{transform:translateY(-4px)}
.ent small{font-family:var(--en);font-weight:600;font-size:.75rem;color:var(--accent);letter-spacing:.06em}
.ent b{font-size:1.1875rem;color:var(--base);line-height:1.5;margin-top:.25rem}
.ent p{font-size:.8125rem;line-height:1.8;color:var(--text);margin-top:.5rem;flex:1}
.ent .go{margin-top:.875rem;font-size:.8125rem;font-weight:700;color:var(--accent)}
.ent.now{background:linear-gradient(135deg,#0b3a8f,#0e73eb);color:#fff}
.ent.now small{color:#7fe4ff}.ent.now b{color:#fff}.ent.now p{color:rgba(255,255,255,.9)}.ent.now .go{color:#fff}
.floors .axis{text-align:center;margin-top:1.25rem;font-size:.875rem;color:var(--muted)}
.floors .axis b{color:var(--base)}
.dot small{letter-spacing:.02em}
/* 記事カード: 階のバッジ・育て直しバッジ・数字だけのカバー */
.card .fl{display:flex;gap:.25rem;margin-top:.75rem}
.card .fl span{font-family:var(--en);font-weight:600;font-size:.6875rem;padding:.1875rem .5rem;border-radius:999px;background:var(--bg);color:var(--muted)}
.card .fl span.on{background:var(--accent);color:#fff}
.card .reborn{position:absolute;left:.75rem;top:.75rem;background:#fff7e0;color:#6a4b00;border:1px solid #f0c24b;border-radius:var(--r-min);font-size:.75rem;font-weight:700;padding:.25rem .5rem;z-index:1}
.card .ph.type{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#071f52,#0b3a8f 55%,#0e5fc9);color:#fff;font-family:var(--en);font-weight:500;letter-spacing:-.02em;text-align:center;line-height:1.1}
.card .ph.type .big1{font-size:3.25rem}
.card .ph.type .big1 i{font-style:normal;color:#7fe4ff}
.card .ph.type .s{display:block;font-family:var(--ja);font-size:.8125rem;font-weight:500;letter-spacing:.04em;margin-top:.75rem;opacity:.85}
.card.sample{outline:3px solid #7fe4ff;outline-offset:-3px}
.card .smp{position:absolute;left:.75rem;top:.75rem;background:#0e73eb;color:#fff;border-radius:var(--r-min);font-size:.75rem;font-weight:700;padding:.25rem .5rem;z-index:1}
/* 相談する（3F）の強化 */
.cons .flowc{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:3.5rem}
.cons .flowc div{background:#fff;border-radius:var(--r-md);padding:1.25rem 1.25rem 1.5rem;box-shadow:0 0 2.25rem rgba(0,0,0,.05)}
.cons .flowc span{font-family:var(--en);font-weight:600;font-size:.75rem;color:var(--accent);letter-spacing:.06em}
.cons .flowc b{display:block;color:var(--base);font-size:1rem;margin-top:.25rem}
.cons .flowc p{font-size:.8125rem;line-height:1.8;margin-top:.375rem}
.cons .who{margin-top:2.5rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.cons .who div{border-left:3px solid var(--accent);padding:.25rem 0 .25rem 1rem}
.cons .who b{display:block;color:var(--base);font-size:.9375rem}
.cons .who p{font-size:.8125rem;line-height:1.8;margin-top:.25rem}
.cons .intro{margin-top:1.25rem;max-width:760px;font-size:.9375rem;line-height:2}
.cons .intro b{color:var(--base)}
@media (max-width:1080px){.ents{grid-template-columns:1fr 1fr}.ent.now{grid-column:1/-1}.cons .flowc{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.entry{padding-top:2rem}.entry .lbl{flex-direction:column;gap:.125rem}.ents{grid-template-columns:1fr}.cons .flowc,.cons .who{grid-template-columns:1fr}.card .ph.type .big1{font-size:2.5rem}}
/* 連載と書き手（v5.1） */
.series .head{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:end}
.series .head p{font-size:.9375rem;line-height:2}
.series .head p b{color:var(--base)}
.sers{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:4rem}
.ser{display:flex;flex-direction:column;background:var(--bg2);border-radius:var(--r-md);padding:2rem 1.75rem 1.75rem}
.ser .no{font-family:var(--en);font-weight:600;font-size:.75rem;color:var(--accent);letter-spacing:.08em;text-transform:uppercase}
.ser .no em{font-style:normal;font-family:var(--ja);font-weight:500;color:#6a4b00;background:#fff7e0;border:1px solid #f0c24b;border-radius:var(--r-min);padding:.0625rem .375rem;margin-left:.5rem;letter-spacing:0;text-transform:none}
.ser h3{font-size:1.25rem;margin-top:.5rem}
.ser .d{font-size:.8125rem;line-height:1.9;margin-top:.625rem}
.ser .eps{margin-top:1.25rem;border-top:1px solid var(--gray)}
.ser .eps li{display:grid;grid-template-columns:3.25rem 1fr;font-size:.8125rem;line-height:1.7;padding:.625rem 0;border-bottom:1px solid var(--gray);color:var(--muted)}
.ser .eps li small{font-family:var(--en);font-weight:600;color:var(--accent)}
.ser .eps a{color:var(--base);font-weight:700}
.ser .eps a:hover{color:var(--accent)}
.ser .by{display:flex;align-items:center;gap:.875rem;margin-top:auto;padding-top:1.5rem}
.ser .by img,.ser .by .pn{width:3rem;height:3rem;border-radius:50%;object-fit:cover;flex:none}
.ser .by .pn{display:flex;align-items:center;justify-content:center;background:#fff;border:1px dashed var(--border);font-size:.6875rem;font-weight:700;color:var(--muted)}
.ser .by b{display:block;font-size:.9375rem;color:var(--base);line-height:1.5}
.ser .by small{display:block;font-size:.75rem;line-height:1.6;color:var(--muted)}
.ser.plan{background:#fff;border:1px dashed var(--border)}
.series .note{margin-top:2rem;font-size:.8125rem;color:var(--muted)}
.series .note b{color:var(--base)}
@media (max-width:1080px){.sers{grid-template-columns:1fr 1fr}}
@media (max-width:767px){.series .head{grid-template-columns:1fr;gap:1.5rem}.sers{grid-template-columns:1fr;margin-top:2.5rem}.ser{padding:1.5rem 1.25rem}
  .dlg .act .btn{min-width:0;width:100%;white-space:normal;gap:.75rem}}
/* 知のネットワーク（v5.2） */
.series .subh{margin-top:4rem;font-weight:700;font-size:1.0625rem;color:var(--base);display:flex;align-items:center;gap:.75rem}
.series .subh::after{content:"";flex:1;height:1px;background:var(--gray)}
.series .sers{margin-top:1.5rem}
.ppl{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:1.5rem}
.ppl li{display:flex;gap:.875rem;align-items:flex-start;background:var(--bg2);border-radius:var(--r-md);padding:1.25rem}
.ppl img,.ppl .ini{width:3.25rem;height:3.25rem;border-radius:50%;object-fit:cover;flex:none}
.ppl .ini{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0b3a8f,#0e73eb);color:#fff;font-weight:700;font-size:1.125rem}
.ppl .ini.pn{background:#fff;border:1px dashed var(--border);color:var(--muted);font-size:.6875rem}
.ppl b{display:block;color:var(--base);font-size:.9375rem;line-height:1.5}
.ppl small{display:block;font-size:.75rem;line-height:1.6;color:var(--muted)}
.ppl span:not(.ini){display:inline-block;margin-top:.5rem;font-size:.75rem;font-weight:700;color:var(--accent);background:#eaf2fc;border-radius:999px;padding:.125rem .625rem}
.ppl b .kari,.ser .by b .kari{display:inline-block;margin-left:.375rem;font-style:normal;font-size:.625rem;font-weight:700;color:var(--muted);border:1px solid var(--border);border-radius:3px;padding:0 .25rem;vertical-align:.125em;line-height:1.5}
.series .tbd{margin-top:.75rem;font-size:.75rem;color:var(--muted)}
.outs{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:1.5rem}
.outs a{display:flex;flex-direction:column;background:#fff;border:1px solid var(--gray);border-radius:var(--r-md);padding:1.25rem 1.25rem 1.5rem;transition:.35s var(--ease)}
.outs a:hover{border-color:var(--accent);transform:translateY(-2px)}
.outs span{font-family:var(--en);font-weight:600;font-size:.75rem;color:var(--accent);letter-spacing:.06em}
.outs b{display:block;color:var(--base);font-size:1rem;margin-top:.25rem}
.outs p{font-size:.8125rem;line-height:1.8;margin-top:.375rem}
.outs em{display:block;font-style:normal;font-size:.75rem;line-height:1.7;color:var(--muted);margin-top:auto;padding-top:.75rem;border-top:1px dashed var(--gray)}
.outs .qz{display:grid;grid-template-columns:1fr 1fr;gap:.25rem;margin:.75rem 0;border-radius:.5rem;overflow:hidden}
.outs .qz img{aspect-ratio:4/3;object-fit:cover;width:100%}
@media (max-width:1080px){.ppl,.outs{grid-template-columns:1fr 1fr}}
@media (max-width:767px){.ppl,.outs{grid-template-columns:1fr}.series .subh{margin-top:2.75rem}}

/* ===== 2026-10-11 定例会のご意見: 日本語を主見出しに・英字は小さなラベルに ===== */
.label{font-size:.875rem;font-weight:600;letter-spacing:.04em;color:var(--accent)}
.label em{font-style:normal;font-family:var(--ja);font-weight:700;margin-left:.625rem;padding:.125rem .5rem;border-radius:999px;background:rgba(14,115,235,.1);font-size:.75rem;letter-spacing:0;vertical-align:.1em}
.hj{margin-top:.875rem;font-size:2.75rem;font-weight:700;line-height:1.4;letter-spacing:.02em;color:var(--base)}
h1,h2,h3,h4,.hj,.jh{word-break:auto-phrase;text-wrap:pretty}  /* 2026-10-13 見出しは文節で折り返し、1〜2文字だけ次の行に落ちるのを避ける（Chrome・新しい Safari）。古いブラウザ向けには .nb で切れ目を指定 */
.nb{display:inline-block}
.jh.sub{margin-top:.75rem;font-size:1.125rem;line-height:1.7;color:var(--muted)}
.proc .label{color:var(--cyan)}
.proc .hj{color:#fff}
/* 3つの円: 日本語を大きく、英字は小さく */
.circ .e{font-size:.875rem;font-weight:600;letter-spacing:.06em;margin-top:.25rem;opacity:.85}
.circ .j{font-size:2.5rem;line-height:1.2;margin-top:.375rem}
.circ .k{display:inline-block;margin-top:.5rem;font-size:.8125rem;font-weight:700;padding:.1875rem .75rem;border-radius:999px;background:rgba(255,255,255,.22)}
/* 7つのステップ: 日本語を大きく */
.step .name{display:flex;flex-direction:column-reverse;font-size:.8125rem;font-weight:600;letter-spacing:.04em;line-height:1.2;opacity:.85}
.step .name small{font-size:1.625rem;margin:0 0 .375rem;opacity:1}
/* About を短く（3つの円と同じ面に） */
.about{padding:6rem 0 2rem}
.floors{padding:2rem 0 6rem}
/* ヒーロー: 何を依頼できる会社か */
.hero .biz{margin-top:1rem;display:inline-block;font-size:.9375rem;font-weight:700;color:#fff;padding:.5rem 1rem;border-radius:.5rem;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3)}
/* 入口: 階の中身・相談への一行 */
.ent small em{font-style:normal;font-family:var(--ja);margin-left:.5rem;font-weight:700;letter-spacing:0}
.entnote{margin-top:1.25rem;font-size:.9375rem;color:var(--base);text-align:right}
.entnote a{display:inline-flex;align-items:center;gap:.375rem;margin-left:.75rem;font-weight:700;color:var(--accent)}
/* 代表の一行帯 */
.dstrip{background:#fff;padding:1.5rem 0 1rem}
.ds{display:grid;grid-template-columns:72px auto 1fr auto;gap:1.5rem;align-items:center;padding:1.25rem 1.5rem;border:1px solid rgba(8,17,26,.1);border-radius:var(--r-md)}
.ds img{width:72px;height:72px;border-radius:50%;object-fit:cover}
.ds .t small{display:block;font-size:.75rem;color:var(--muted)}
.ds .t b{font-size:1.25rem;color:var(--base);white-space:nowrap}
.ds .d{font-size:.8125rem;line-height:1.8;color:var(--text)}
.ds .go{display:flex;flex-direction:column;gap:.375rem;font-size:.8125rem;font-weight:700;white-space:nowrap}
.ds .go a{display:inline-flex;align-items:center;gap:.375rem;color:var(--accent)}
/* 記事カードの階: 中身の名前を添える */
.card .fl{flex-wrap:wrap}
.card .fl span:nth-child(1)::after{content:" 問い・現象"}
.card .fl span:nth-child(2)::after{content:" 物理の解説"}
.card .fl span:nth-child(3)::after{content:" 設計への応用"}
/* 事例から /service/ へ */
.story .src a{display:inline-flex;align-items:center;gap:.375rem;font-family:inherit;font-size:.8125rem;font-weight:700;color:var(--accent)}
/* ヘッダー: 「相談する」を塗りのボタンに・スマホでも常に出す */
.hd .btn.line.cta{background:#fff;border-color:#fff;color:var(--accent)}
.hd .btn.line.cta:hover{background:rgba(255,255,255,.85)}
.hd.solid .btn.line.cta{background:var(--accent);border-color:var(--accent);color:#fff}
.hd.solid .btn.line.cta:hover{background:var(--accent-dark)}
@media (max-width:767px){
  .hj{font-size:1.625rem}
  .jh.sub{font-size:1rem}
  .circ .j{font-size:2rem}
  .step .name small{font-size:1.25rem}
  .about{padding:4rem 0 1rem}
  .entnote{text-align:left;font-size:.875rem}
  .entnote a{margin-left:.25rem}
  .ds{grid-template-columns:56px 1fr;gap:.75rem 1rem;padding:1rem}
  .ds img{width:56px;height:56px}
  .ds .d,.ds .go{grid-column:1/-1}
  .hd .right .btn.line.cta{display:inline-flex;height:2.25rem;padding:0 1rem;font-size:.8125rem}
}

/* 2026-10-11 久保寺さん「まだ決めていないものはタイトルに『検討中』を」 */
.tbd{display:inline-block;margin-left:.625rem;padding:.125rem .625rem;border-radius:999px;font-size:.45em;font-weight:700;line-height:1.6;letter-spacing:.04em;vertical-align:.35em;color:#6a4b00;background:#fff3cf;border:1px solid #f0c24b;white-space:nowrap}
.fbn .tx .tbd{display:inline-block;font-size:.6875rem;vertical-align:.1em;margin-top:0;opacity:1}
/* 2026-10-12 フッターの流れ文字も止める（久保寺さん「動きでめまいがする」） */
.ft .marq{animation:none;padding-left:var(--gut);font-size:min(7.5rem,calc((100vw - 2 * var(--gut)) / 11.4))}
.ft .marq span:not(:first-child){display:none}