/* ============================================================
   すみだAIきょうしつ — Design System
   Brand: AIプロジェクトチーム
   Palette: 生成り / 墨 / 藍 / 柿 / 若葉
   ============================================================ */

:root{
  --paper:#FBF7F0;
  --surface:#FFFFFF;
  --ink:#26221C;
  --ink-soft:#5A5348;
  --ink-faint:#8C8272;
  --ai:#1F4A6B;
  --ai-deep:#163A56;
  --ai-tint:#EAF1F6;
  --kaki:#DA6338;
  --kaki-deep:#BE4E28;
  --kaki-tint:#FBEDE4;
  --wakaba:#4E7A5A;
  --wakaba-tint:#E9F1EB;
  --line:#E6DDCE;
  --shadow:rgba(38,34,28,.10);
  --shadow-strong:rgba(38,34,28,.16);
  --radius:20px;
  --radius-sm:12px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#1B1915;
    --surface:#252118;
    --ink:#F3ECDD;
    --ink-soft:#BFB5A2;
    --ink-faint:#948A78;
    --ai:#7FB4D8;
    --ai-deep:#12293C;
    --ai-tint:#22303A;
    --kaki:#F0885C;
    --kaki-deep:#F5A17C;
    --kaki-tint:#33251C;
    --wakaba:#8CBE9C;
    --wakaba-tint:#22301F;
    --line:#3A342A;
    --shadow:rgba(0,0,0,.45);
    --shadow-strong:rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --paper:#1B1915;
  --surface:#252118;
  --ink:#F3ECDD;
  --ink-soft:#BFB5A2;
  --ink-faint:#948A78;
  --ai:#7FB4D8;
  --ai-deep:#12293C;
  --ai-tint:#22303A;
  --kaki:#F0885C;
  --kaki-deep:#F5A17C;
  --kaki-tint:#33251C;
  --wakaba:#8CBE9C;
  --wakaba-tint:#22301F;
  --line:#3A342A;
  --shadow:rgba(0,0,0,.45);
  --shadow-strong:rgba(0,0,0,.6);
}

/* ---- Base ---- */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"BIZ UDPGothic","Hiragino Sans","Yu Gothic UI",system-ui,sans-serif;
  font-size:19px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Shippori Mincho","Hiragino Mincho ProN",serif;line-height:1.45;text-wrap:balance;margin:0;font-weight:700;word-break:auto-phrase}
.lead,.hero-lead,.sec-head p{word-break:auto-phrase}
/* 改行させたくない語句のまとまり（文節）用 */
.nb{display:inline-block}
p{margin:0}
img,svg{max-width:100%}
a{color:inherit}
ul,ol{margin:0;padding:0}
.label,.mono-label{font-family:"Zen Maru Gothic",sans-serif}
.wrap{width:min(1120px,92vw);margin:0 auto}
.wrap-narrow{width:min(860px,92vw);margin:0 auto}
:focus-visible{outline:3px solid var(--kaki);outline-offset:3px;border-radius:6px}
::selection{background:var(--kaki);color:#fff}

.skip{position:absolute;left:-999px;top:0;background:var(--ai);color:#fff;padding:12px 18px;border-radius:8px;z-index:200;text-decoration:none}
.skip:focus{left:12px;top:12px}

/* ---- Demo notice ---- */
.demo-note{background:var(--kaki-tint);color:var(--ink);text-align:center;padding:9px 16px;font-size:.85rem}

/* ---- Header ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--paper) 90%,transparent);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.bar{display:flex;align-items:center;gap:14px;padding:10px 0}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;margin-right:auto;min-width:0}
.brand-name{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.14rem;color:var(--ai);line-height:1.2;display:block;white-space:nowrap}
.brand-sub{display:block;font-size:.68rem;color:var(--ink-soft)}
nav.menu{display:flex;gap:2px;flex-wrap:wrap}
nav.menu a{
  text-decoration:none;font-family:"Zen Maru Gothic",sans-serif;font-weight:500;
  padding:9px 11px;border-radius:999px;font-size:.93rem;color:var(--ink);white-space:nowrap;
}
nav.menu a:hover{background:var(--ai-tint);color:var(--ai)}
nav.menu a[aria-current="page"]{background:var(--ai);color:#fff}
:root[data-theme="dark"] nav.menu a[aria-current="page"]{color:#12293C}
.tel-btn{
  display:inline-flex;align-items:center;gap:8px;text-decoration:none;
  background:var(--kaki);color:#fff;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;
  padding:11px 18px;border-radius:999px;font-size:1rem;box-shadow:0 4px 12px var(--shadow);white-space:nowrap;
}
.tel-btn:hover{background:var(--kaki-deep)}
:root[data-theme="dark"] .tel-btn{color:#1B1915}

/* Mobile nav */
.nav-toggle{display:none;background:var(--surface);border:2px solid var(--line);border-radius:12px;padding:9px 12px;cursor:pointer;color:var(--ink);font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.95rem;align-items:center;gap:6px;white-space:nowrap;flex:0 0 auto}
@media (max-width:960px){
  nav.menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;background:var(--surface);border-bottom:2px solid var(--line);
    padding:12px 4vw 18px;gap:4px;box-shadow:0 18px 30px var(--shadow);
  }
  nav.menu.open{display:flex}
  nav.menu a{font-size:1.1rem;padding:13px 16px;border-radius:12px}
  .nav-toggle{display:inline-flex}
}
/* 小さい画面: ロゴ・メニュー・ボタンが1行に収まるように */
@media (max-width:520px){
  .bar{gap:6px}
  .brand{gap:7px}
  .brand svg{width:34px;height:34px}
  .brand-name{font-size:.92rem}
  .brand-sub{font-size:.58rem}
  .nav-toggle{padding:7px 8px;font-size:.78rem;border-radius:10px}
  .tel-btn{padding:8px 10px;font-size:.8rem;gap:5px}
  .tel-btn svg{display:none}
}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;text-decoration:none;border:none;cursor:pointer;
  font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.14rem;
  padding:17px 30px;border-radius:16px;box-shadow:0 6px 16px var(--shadow);
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px var(--shadow-strong)}
.btn-primary{background:var(--kaki);color:#fff}
.btn-primary:hover{background:var(--kaki-deep)}
:root[data-theme="dark"] .btn-primary{color:#1B1915}
.btn-ghost{background:var(--surface);color:var(--ai);border:2px solid var(--ai)}
.btn-ghost:hover{background:var(--ai-tint)}
.btn-lg{font-size:1.25rem;padding:20px 38px}
.btn-block{width:100%}

/* ---- Sections ---- */
section{padding:76px 0}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tint{background:var(--ai-tint)}
.sec-head{text-align:center;margin-bottom:48px}
.sec-head .kicker{font-family:"Zen Maru Gothic",sans-serif;color:var(--kaki);font-weight:700;font-size:1rem;letter-spacing:.06em}
.sec-head h2,.sec-head h1{font-size:clamp(1.75rem,4vw,2.6rem);color:var(--ink);margin-top:10px}
.sec-head p{margin-top:14px;color:var(--ink-soft);font-size:1.08rem}
.sec-head.left{text-align:left}

/* Page hero (subpages) */
.page-hero{padding:58px 0 44px;background:linear-gradient(180deg,var(--ai-tint),var(--paper))}
.page-hero .kicker{font-family:"Zen Maru Gothic",sans-serif;color:var(--kaki);font-weight:700;font-size:1rem}
.page-hero h1{font-size:clamp(1.9rem,4.6vw,2.9rem);margin-top:10px}
.page-hero .lead{margin-top:16px;color:var(--ink-soft);font-size:1.12rem;max-width:38em}
.breadcrumb{font-size:.86rem;color:var(--ink-faint);margin-bottom:18px}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumb a{color:var(--ai);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb li+li::before{content:"›";margin-right:6px;color:var(--ink-faint)}

/* ---- Cards ---- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 2px 10px var(--shadow)}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:22px}
@media (max-width:820px){.grid-2,.grid-3{grid-template-columns:1fr}}

/* Promise / feature cards */
.p-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .18s ease,box-shadow .18s ease}
.p-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px var(--shadow)}
.p-badge{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:var(--ai-tint);color:var(--ai);margin-bottom:16px}
.p-badge svg{width:30px;height:30px}
.p-badge.green{background:var(--wakaba-tint);color:var(--wakaba)}
.p-badge.orange{background:var(--kaki-tint);color:var(--kaki)}
.p-card h3{font-size:1.32rem;color:var(--ai);margin-bottom:8px}
.p-card p{color:var(--ink-soft);font-size:1rem}

/* ---- Course cards ---- */
.c-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;position:relative;box-shadow:0 2px 10px var(--shadow)}
.c-card.feature{border:2px solid var(--kaki);box-shadow:0 12px 32px var(--shadow)}
.c-tag{position:absolute;top:-14px;left:26px;background:var(--kaki);color:#fff;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.86rem;padding:5px 14px;border-radius:999px}
:root[data-theme="dark"] .c-tag{color:#1B1915}
.c-card h3{font-size:1.4rem;margin-bottom:6px}
.c-meta{font-size:.95rem;color:var(--ink-soft);margin-bottom:14px;font-family:"Zen Maru Gothic",sans-serif}
.c-card ul{list-style:none;display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.c-card li{position:relative;padding-left:30px;font-size:1rem}
.c-card li::before{content:"";position:absolute;left:0;top:.5em;width:17px;height:17px;border-radius:50%;background:var(--wakaba)}
.c-card li::after{content:"";position:absolute;left:5.5px;top:.68em;width:4px;height:8px;border-right:2.5px solid var(--surface);border-bottom:2.5px solid var(--surface);transform:rotate(40deg)}
.price{margin-top:auto;padding-top:18px;border-top:2px dashed var(--line);display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.price .num{font-family:"Shippori Mincho",serif;font-size:2rem;font-weight:700;color:var(--kaki);font-variant-numeric:tabular-nums}
.price .unit{color:var(--ink-soft);font-size:.98rem}
.mode-chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.chip{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.8rem;padding:4px 12px;border-radius:999px}
.chip.online{background:var(--ai-tint);color:var(--ai)}
.chip.visit{background:var(--wakaba-tint);color:var(--wakaba)}

/* ---- Steps ---- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
@media (max-width:820px){.steps{grid-template-columns:1fr}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;position:relative}
.step::before{
  counter-increment:step;content:counter(step);
  font-family:"Shippori Mincho",serif;font-weight:700;font-size:1.5rem;
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;
  background:var(--ai);color:#fff;margin-bottom:16px;
}
:root[data-theme="dark"] .step::before{color:#12293C}
.step h3{font-size:1.28rem;margin-bottom:8px}
.step p{color:var(--ink-soft);font-size:1rem}

/* ---- Stats band ---- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:44px}
@media (max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 14px;text-align:center}
.stat .num{font-family:"Shippori Mincho",serif;font-size:1.9rem;font-weight:700;color:var(--ai);font-variant-numeric:tabular-nums;line-height:1.3}
.stat .cap{font-size:.88rem;color:var(--ink-soft);font-family:"Zen Maru Gothic",sans-serif}

/* ---- Tables ---- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:1rem}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--ai-tint);color:var(--ai);font-family:"Zen Maru Gothic",sans-serif;font-size:.95rem}
tbody tr:last-child td{border-bottom:none}
td .yen{font-variant-numeric:tabular-nums;font-weight:700;color:var(--kaki)}

/* ---- Voices ---- */
.v-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.v-card .quote{font-size:1.1rem;line-height:1.85}
.v-card .who{display:flex;align-items:center;gap:14px;margin-top:20px}
.avatar{width:50px;height:50px;border-radius:50%;background:var(--ai-tint);color:var(--ai);display:grid;place-items:center;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.2rem;flex:0 0 auto}
.who .name{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;display:block}
.who .attr{font-size:.88rem;color:var(--ink-soft)}
.stars{color:var(--kaki);letter-spacing:2px;font-size:1.05rem;margin-bottom:12px}

/* ---- FAQ ---- */
.faq-list{display:flex;flex-direction:column;gap:14px}
details.faq{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
details.faq summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:14px;
  padding:20px 24px;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.08rem;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::before{content:"Q";flex:0 0 auto;width:38px;height:38px;border-radius:50%;background:var(--ai);color:#fff;display:grid;place-items:center;font-family:"Shippori Mincho",serif}
:root[data-theme="dark"] details.faq summary::before{color:#12293C}
details.faq summary::after{content:"＋";margin-left:auto;color:var(--kaki);font-size:1.3rem;transition:transform .2s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .a{padding:0 24px 22px 76px;color:var(--ink-soft);font-size:1.02rem}
details.faq[open]{border-color:var(--ai)}

/* ---- Forms ---- */
form{display:flex;flex-direction:column;gap:18px}
label{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.02rem;display:block;margin-bottom:8px}
label .req{color:var(--kaki);font-size:.85rem;margin-left:6px}
input,textarea,select{
  width:100%;font-family:inherit;font-size:1.08rem;padding:14px 16px;
  border:2px solid var(--line);border-radius:12px;background:var(--paper);color:var(--ink);
}
input:focus,textarea:focus,select:focus{border-color:var(--ai);outline:none}
textarea{min-height:130px;resize:vertical}
.form-note{font-size:.9rem;color:var(--ink-soft)}

/* ---- 選択肢（シニア向けに大きなタップ領域のカード型） ---- */
fieldset{border:0;margin:0;padding:0}
legend{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.02rem;margin-bottom:10px;padding:0}
legend .req{color:var(--kaki);font-size:.85rem;margin-left:6px}
.choices{display:flex;flex-direction:column;gap:9px}
.choices.cols{display:grid;grid-template-columns:1fr 1fr;gap:9px}
@media (max-width:520px){.choices.cols{grid-template-columns:1fr}}
.choice{
  display:flex;align-items:center;gap:12px;cursor:pointer;
  border:2px solid var(--line);border-radius:12px;padding:13px 16px;
  background:var(--paper);font-size:1.02rem;font-family:inherit;font-weight:400;margin:0;
  transition:border-color .12s ease,background .12s ease;
}
.choice:hover{border-color:var(--ai);background:var(--ai-tint)}
.choice input{
  appearance:none;-webkit-appearance:none;margin:0;flex:0 0 auto;
  width:24px;height:24px;border:2px solid var(--ink-soft);border-radius:50%;
  background:var(--surface);display:grid;place-items:center;padding:0;
}
.choice input:checked{border-color:var(--kaki);border-width:7px}
.choice:has(input:checked){border-color:var(--kaki);background:var(--kaki-tint)}
.choice input:focus-visible{outline:3px solid var(--kaki);outline-offset:3px}

/* ---- 送信状態のメッセージ ---- */
.form-msg{padding:18px 20px;border-radius:12px;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;line-height:1.8}
.form-msg.ok{background:var(--wakaba);color:#fff}
:root[data-theme="dark"] .form-msg.ok{color:#1B1915}
.form-msg.ng{background:var(--kaki-tint);color:var(--ink);border:2px solid var(--kaki)}
.form-msg .sub{display:block;font-family:"BIZ UDPGothic",sans-serif;font-weight:400;font-size:.95rem;margin-top:8px}
.form-msg.ok .sub{opacity:.92}
button[disabled]{opacity:.6;cursor:progress}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.thanks{background:var(--wakaba);color:#fff;padding:16px 20px;border-radius:12px;font-family:"Zen Maru Gothic",sans-serif;font-weight:700;text-align:center}
:root[data-theme="dark"] .thanks{color:#1B1915}

/* ---- CTA band ---- */
.cta-band{background:var(--ai-deep);color:#F3ECDD;text-align:center;padding:72px 0}
.cta-band h2{color:#F3ECDD;font-size:clamp(1.7rem,4vw,2.5rem)}
.cta-band p{margin:16px auto 32px;opacity:.9;font-size:1.1rem;max-width:34em}
.cta-band .btn-primary{box-shadow:0 8px 24px rgba(0,0,0,.35)}
.cta-band .sub{margin-top:18px;font-size:.95rem;opacity:.75}
.cta-row{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}

/* ---- Info rows ---- */
.info-row{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:none}
.info-row .ic{width:44px;height:44px;flex:0 0 auto;border-radius:12px;background:var(--kaki-tint);color:var(--kaki);display:grid;place-items:center}
.info-row .ic svg{width:24px;height:24px}
.info-row .t{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.95rem;color:var(--ink-soft);display:block}
.info-row .d{font-size:1.1rem}
.info-row .d a{color:var(--ai);font-weight:700}

/* ---- Footer ---- */
.site-footer{background:var(--ai-deep);color:#F3ECDD;padding:56px 0 32px}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr}}
.foot-brand{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.35rem}
.foot-tag{opacity:.85;margin-top:10px;font-size:.98rem;line-height:1.8}
.foot-h{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.95rem;opacity:.7;margin-bottom:14px;letter-spacing:.05em}
.foot-links{list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-links a{color:#F3ECDD;text-decoration:none;opacity:.9;font-size:1rem}
.foot-links a:hover{opacity:1;text-decoration:underline}
.foot-bottom{margin-top:40px;padding-top:22px;border-top:1px solid rgba(243,236,221,.2);font-size:.85rem;opacity:.75;line-height:1.8}

/* ---- Scroll reveal (only when JS is available: html.js) ---- */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}

/* ---- Blog article ---- */
.article{width:min(780px,92vw);margin:0 auto}
.post-meta{display:flex;gap:14px;align-items:center;color:var(--ink-faint);font-size:.92rem;margin-top:14px;font-variant-numeric:tabular-nums}
.post-meta .cat{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;color:var(--kaki)}
.article p{margin:0 0 1.4em}
.article h2{font-size:1.5rem;margin:2em 0 .8em;padding-left:16px;border-left:6px solid var(--kaki);line-height:1.5}
.article h3{font-size:1.2rem;margin:1.6em 0 .6em;color:var(--ai)}
.article ul,.article ol{margin:0 0 1.4em;padding-left:1.5em;display:flex;flex-direction:column;gap:.5em}
.article strong{color:var(--kaki)}
.article .point{background:var(--wakaba-tint);border-left:6px solid var(--wakaba);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:20px 24px;margin:0 0 1.6em}
.article .point .pt{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;color:var(--wakaba);display:block;margin-bottom:6px}
.article .warn{background:var(--kaki-tint);border-left:6px solid var(--kaki);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:20px 24px;margin:0 0 1.6em}
.article .warn .pt{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;color:var(--kaki);display:block;margin-bottom:6px}
.article .lesson-link{background:var(--ai-tint);border-radius:var(--radius);padding:28px;margin:2.5em 0 0;text-align:center}
.article .lesson-link p{margin-bottom:18px;color:var(--ink-soft)}
.term{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px 26px;margin-bottom:16px}
.term dt{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:1.15rem;color:var(--ai);margin-bottom:6px}
.term dd{margin:0;color:var(--ink-soft)}
.term dd .rei{display:block;margin-top:8px;font-size:.95rem;color:var(--wakaba)}


/* ---- 講師紹介 ---- */
.teacher-band{display:grid;grid-template-columns:220px 1fr;gap:40px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:40px}
@media (max-width:820px){.teacher-band{grid-template-columns:1fr;gap:24px;padding:30px 24px;text-align:center}}
.t-photo{width:100%;max-width:220px;margin:0 auto;border-radius:50%;overflow:hidden;
  box-shadow:0 14px 34px var(--shadow);border:5px solid var(--surface)}
.t-photo svg,.t-photo img{display:block;width:100%;height:auto;aspect-ratio:1;object-fit:cover}
.t-role{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.95rem;color:var(--kaki)}
.t-name{font-size:1.9rem;margin:6px 0 16px;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
@media (max-width:820px){.t-name{justify-content:center}}
.t-age{font-family:"Zen Maru Gothic",sans-serif;font-size:.92rem;font-weight:700;color:var(--ai);
  background:var(--ai-tint);border-radius:999px;padding:5px 14px}
.t-lead{font-size:1.12rem;margin-bottom:14px}
.teacher-band p{color:var(--ink-soft)}
.teacher-band .t-lead{color:var(--ink)}

/* 講師ページ */
.t-hero{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:center}
@media (max-width:820px){.t-hero{grid-template-columns:1fr;gap:26px;text-align:center}}
.t-hero .t-photo{max-width:260px}
.t-hero h1{font-size:clamp(1.9rem,4.6vw,2.7rem);margin:10px 0 18px}
.t-quote{background:var(--kaki-tint);border-radius:24px;padding:36px 34px;margin:0;
  font-size:1.15rem;line-height:2.05}
.t-quote .mark{font-family:"Shippori Mincho",serif;font-size:3rem;color:var(--kaki);
  line-height:1;display:block;margin-bottom:-8px}
.t-quote cite{display:block;margin-top:18px;text-align:right;font-style:normal;
  font-family:"Zen Maru Gothic",sans-serif;font-weight:700;color:var(--ink-soft);font-size:.98rem}
.t-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px}
.t-fact{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px}
.t-fact .k{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;font-size:.86rem;
  color:var(--kaki);display:block;margin-bottom:6px}
.t-fact .v{font-size:1.02rem}

/* ---- Utility ---- */
.center{text-align:center}
.mt-lg{margin-top:44px}
.mt-md{margin-top:28px}
.note-line{text-align:center;color:var(--ink-soft);font-size:.95rem;margin-top:26px}
.text-link{color:var(--ai);font-weight:700;text-decoration:underline;text-underline-offset:4px}
.text-link:hover{color:var(--kaki)}
.arrow-link{font-family:"Zen Maru Gothic",sans-serif;font-weight:700;color:var(--ai);text-decoration:none;display:inline-flex;align-items:center;gap:8px}
.arrow-link::after{content:"→";transition:transform .15s}
.arrow-link:hover::after{transform:translateX(4px)}