/* Layout: worksheet dot-grid ground; left-weighted English display headings with Japanese subheads, sections alternating white / pale sky */
:root{
  --bg:#FFFFFF;
  --bg-alt:#F3F6FB;
  --ink:#1F2430;
  --ink-soft:#5E6676;
  --line:#DCE3EE;
  --sky:#2A62B8;
  --sky-pale:#E4ECF8;
  --sprout:#F4B63F;
  --sprout-ink:#6B4A00;
  --on-sky:#FFFFFF;
  --dot:#C9D5E8;
  --font-display:"Montserrat","Helvetica Neue",Arial,sans-serif;
  --font-body:"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;
  --font-round:"Zen Maru Gothic","Hiragino Maru Gothic ProN","Noto Sans JP",sans-serif;
  --wrap:1200px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#12161E;--bg-alt:#181E29;--ink:#E8ECF3;--ink-soft:#A3ACBC;--line:#2A3342;
  --sky:#7FA8EC;--sky-pale:#1E2A3F;--sprout:#F4B63F;--sprout-ink:#2A1E00;--on-sky:#0D1420;--dot:#2A3546;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#12161E;--bg-alt:#181E29;--ink:#E8ECF3;--ink-soft:#A3ACBC;--line:#2A3342;
  --sky:#7FA8EC;--sky-pale:#1E2A3F;--sprout:#F4B63F;--sprout-ink:#2A1E00;--on-sky:#0D1420;--dot:#2A3546;color-scheme:dark}

*{box-sizing:border-box}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:16px;line-height:1.9;letter-spacing:.02em}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:3px solid var(--sprout);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(24px, env(safe-area-inset-left, 0px));padding-right:max(24px, env(safe-area-inset-right, 0px))}
@media (max-width:480px){.wrap{padding-left:max(16px, env(safe-area-inset-left, 0px));padding-right:max(16px, env(safe-area-inset-right, 0px))}}

/* Header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top, 0px);z-index:10;background:var(--bg)}
.site-header{position:sticky;top:env(safe-area-inset-top, 0px);z-index:9;background:color-mix(in srgb, var(--bg) 92%, transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:baseline;gap:10px;text-decoration:none}
.logo-mark{font-family:var(--font-display);font-weight:800;font-size:22px;letter-spacing:.04em;color:var(--ink)}
.logo-mark span{color:var(--sky)}
.logo-sub{font-size:11px;color:var(--ink-soft);letter-spacing:.08em}
.nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:500}
.nav a{text-decoration:none;color:var(--ink)}
.nav a:hover{color:var(--sky)}
.nav .btn-contact{background:var(--sky);color:var(--on-sky);padding:10px 20px;border-radius:999px}
.nav .btn-contact:hover{color:var(--on-sky);opacity:.9}
@media (max-width:900px){.nav a:not(.btn-contact){display:none}.logo-sub{display:none}}

/* Hero */
.hero{position:relative;overflow:hidden;background-image:radial-gradient(var(--dot) 1.2px, transparent 1.3px);background-size:24px 24px;background-position:12px 12px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:48px;align-items:center;padding-block:72px 88px}
.hero-words{font-family:var(--font-display);font-weight:800;font-size:clamp(48px,7.4vw,96px);line-height:1.02;letter-spacing:-.01em;margin:0;color:color-mix(in srgb, var(--sky) 28%, var(--bg))}
.hero-words span{display:block}
.hero-words b{color:var(--sky);font-weight:800}
.hero-copy{font-family:var(--font-round);font-weight:700;font-size:clamp(22px,2.6vw,30px);line-height:1.6;margin:36px 0 12px;color:var(--ink);text-wrap:balance}
.hero-lead{color:var(--ink-soft);margin:0;max-width:30em;font-size:15px}
.hero-meaning{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.chip{font-size:12px;font-weight:500;border:1px solid var(--line);background:var(--bg);padding:4px 12px;border-radius:999px;color:var(--ink-soft)}
.chip b{color:var(--sky);font-family:var(--font-display);margin-right:6px}

.collage{display:grid;grid-template-columns:3fr 2fr;grid-template-rows:200px 200px;gap:16px}
.ph{position:relative;border-radius:6px;overflow:hidden;background:var(--sky-pale);display:flex;align-items:flex-end;min-width:0}
.ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;max-width:none}
.ph figcaption{position:relative;margin:12px;font-size:12px;background:var(--bg);color:var(--ink-soft);padding:3px 10px;border-radius:4px}
.ph-a{grid-row:1 / span 2}
@media (max-width:860px){
  .hero .wrap{grid-template-columns:1fr;padding-block:48px 64px;gap:40px}
  .collage{grid-template-rows:150px 150px}
}

/* Sections */
section{scroll-margin-top:80px}
.sec{padding-block:104px}
.sec.alt{background:var(--bg-alt)}
@media (max-width:600px){.sec{padding-block:72px}}
.sec-head{display:flex;flex-direction:column;gap:4px;margin-bottom:48px}
.sec-en{font-family:var(--font-display);font-weight:800;font-size:clamp(36px,5vw,56px);line-height:1.1;margin:0;color:var(--sky);letter-spacing:.01em}
.sec-ja{font-size:14px;font-weight:700;color:var(--ink);margin:0;display:flex;align-items:center;gap:10px}
.sec-ja::before{content:"";width:18px;height:3px;background:var(--sprout);border-radius:2px}

.about-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
.about-statement{font-family:var(--font-round);font-weight:700;font-size:clamp(22px,2.4vw,28px);line-height:1.7;margin:0;text-wrap:balance}
.about-body p{margin:0 0 20px;max-width:34em}
.btn{display:inline-flex;align-items:center;gap:12px;font-weight:700;font-size:14px;text-decoration:none;border:1.5px solid var(--sky);color:var(--sky);padding:12px 24px;border-radius:999px;transition:background .2s,color .2s}
.btn:hover{background:var(--sky);color:var(--on-sky)}
.btn .arrow{font-family:var(--font-display)}
@media (max-width:860px){.about-grid{grid-template-columns:1fr;gap:32px}}

.strengths{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.strength{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:32px 28px;display:flex;flex-direction:column;gap:12px}
.strength .key{font-family:var(--font-display);font-weight:700;font-size:12px;letter-spacing:.14em;color:var(--sprout-ink);background:var(--sprout);align-self:flex-start;padding:2px 10px;border-radius:3px}
.strength h3{font-family:var(--font-round);font-size:21px;margin:0;line-height:1.5}
.strength p{margin:0;color:var(--ink-soft);font-size:15px}
@media (max-width:900px){.strengths{grid-template-columns:1fr}}

.biz{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.biz-item{padding:36px 32px 36px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px}
.biz-item:nth-child(even){padding-left:32px;border-left:1px solid var(--line)}
.biz-icon{width:56px;height:56px;border-radius:50%;background:var(--sky-pale);display:grid;place-items:center}
.biz-icon svg{width:28px;height:28px;stroke:var(--sky);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.biz-item h3{margin:0 0 6px;font-size:19px}
.biz-item p{margin:0 0 14px;color:var(--ink-soft);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;color:var(--sky);background:var(--sky-pale);padding:2px 10px;border-radius:3px}
@media (max-width:760px){.biz{grid-template-columns:1fr}.biz-item,.biz-item:nth-child(even){padding:28px 0;border-left:0}}

.school{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:0;background:var(--bg);border:1px solid var(--line);border-radius:6px;overflow:hidden}
.school .ph{border-radius:0;min-height:300px}
.school-body{padding:40px}
.school-body .label{font-size:12px;color:var(--ink-soft);margin:0 0 4px}
.school-body h3{font-family:var(--font-round);font-size:26px;margin:0 0 16px;line-height:1.4}
.school dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 20px;margin:0 0 28px;font-size:15px}
.school dt{color:var(--ink-soft);font-weight:500}
.school dd{margin:0}
.todo{color:var(--sprout-ink);background:color-mix(in srgb, var(--sprout) 35%, transparent);padding:0 6px;border-radius:3px;font-size:13px}
@media (max-width:860px){.school{grid-template-columns:1fr}.school .ph{min-height:200px}.school-body{padding:28px 24px}}

.contents{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.content-card{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:var(--bg);display:flex;flex-direction:column}
.content-card .ph{border-radius:0;height:180px}
.content-card .body{padding:28px}
.content-card h3{margin:0 0 8px;font-size:19px}
.content-card p{margin:0 0 16px;color:var(--ink-soft);font-size:15px}
@media (max-width:760px){.contents{grid-template-columns:1fr}}

.news-list{list-style:none;margin:0 0 32px;padding:0;border-top:1px solid var(--line)}
.news-list li{display:grid;grid-template-columns:110px 96px minmax(0,1fr);gap:20px;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--line)}
.news-date{font-family:var(--font-display);font-weight:600;font-size:14px;font-variant-numeric:tabular-nums;color:var(--ink-soft)}
.news-cat{font-size:12px;text-align:center;border:1px solid var(--sky);color:var(--sky);border-radius:3px;padding:1px 0}
.news-title{font-size:15px}
.sample{font-size:12px;color:var(--ink-soft);margin:-36px 0 32px}
@media (max-width:600px){.news-list li{grid-template-columns:auto auto;gap:6px 12px}.news-title{grid-column:1 / -1}.news-cat{padding:1px 10px}}

.recruit{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center}
.recruit p.big{font-family:var(--font-round);font-weight:700;font-size:clamp(22px,2.6vw,30px);margin:0 0 8px;line-height:1.6;text-wrap:balance}
.recruit p{margin:0;color:var(--ink-soft)}
@media (max-width:760px){.recruit{grid-template-columns:1fr;gap:24px}}

.cta{background:var(--sky);color:var(--on-sky)}
.cta .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding-block:64px}
.cta .en{font-family:var(--font-display);font-weight:800;font-size:clamp(36px,5vw,56px);line-height:1;margin:0}
.cta p{margin:8px 0 0;font-size:15px}
.cta .btn{border-color:var(--on-sky);color:var(--on-sky);background:transparent}
.cta .btn:hover{background:var(--on-sky);color:var(--sky)}

footer{background:var(--bg-alt);font-size:13px;color:var(--ink-soft)}
footer .wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;padding-block:56px 40px}
footer .logo-mark{font-size:20px}
footer address{font-style:normal;margin-top:12px;line-height:1.8}
.foot-nav{display:grid;grid-template-columns:repeat(3,auto);gap:10px 40px}
.foot-nav a{text-decoration:none}
.foot-nav a:hover{color:var(--sky)}
.copy{grid-column:1 / -1;border-top:1px solid var(--line);padding-top:20px;font-family:var(--font-display);font-size:12px}
@media (max-width:760px){footer .wrap{grid-template-columns:1fr}.foot-nav{grid-template-columns:repeat(2,auto)}}

.fade{animation:rise .7s ease-out both}
.fade.d2{animation-delay:.12s}.fade.d3{animation-delay:.24s}
@keyframes rise{from{transform:translateY(10px);opacity:.01}to{transform:none;opacity:1}}

/* ---------- 下層ページ共通 ---------- */
.nav a[aria-current="page"]:not(.btn-contact){color:var(--sky);box-shadow:inset 0 -2px 0 var(--sky)}
.page-hero{background-image:radial-gradient(var(--dot) 1.2px, transparent 1.3px);background-size:24px 24px;background-position:12px 12px;border-bottom:1px solid var(--line)}
.page-hero .wrap{padding-block:64px 56px}
.page-hero .sec-en{font-size:clamp(40px,6vw,72px)}
.crumb{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--ink-soft);margin:0 0 20px;padding:0;list-style:none}
.crumb li+li::before{content:"/";margin-right:8px;color:var(--line)}
.crumb a{text-decoration:none}
.crumb a:hover{color:var(--sky)}
.lead{font-family:var(--font-round);font-weight:700;font-size:clamp(20px,2.2vw,26px);line-height:1.7;margin:0 0 32px;max-width:32em;text-wrap:balance}
.prose{max-width:40em}
.prose p{margin:0 0 1.4em}
.prose h3{font-size:19px;margin:2em 0 .6em}
.prose ul{padding-left:1.4em;margin:0 0 1.4em}
.prose li{margin-bottom:.4em}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:32px}}
.stack{display:flex;flex-direction:column;gap:80px}

.data{display:grid;grid-template-columns:200px minmax(0,1fr);margin:0;border-top:1px solid var(--line)}
.data dt,.data dd{padding:20px 0;border-bottom:1px solid var(--line);margin:0}
.data dt{font-weight:700;color:var(--ink);padding-right:24px}
@media (max-width:600px){.data{grid-template-columns:1fr}.data dt{border-bottom:0;padding-bottom:0}.data dd{padding-top:6px}}

.mvv{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.mvv article{border-top:3px solid var(--sky);padding-top:20px}
.mvv .k{font-family:var(--font-display);font-weight:800;font-size:22px;color:var(--sky);margin:0 0 8px}
.mvv p{margin:0}
@media (max-width:860px){.mvv{grid-template-columns:1fr}}

.name-meaning{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.name-meaning article{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:28px}
.name-meaning .word{font-family:var(--font-display);font-weight:800;font-size:44px;line-height:1;color:var(--sky);margin:0 0 12px}
.name-meaning h3{margin:0 0 6px;font-size:18px}
.name-meaning p{margin:0;color:var(--ink-soft);font-size:15px}
@media (max-width:600px){.name-meaning{grid-template-columns:1fr}}

.biz-detail{display:grid;grid-template-columns:96px minmax(0,1fr);gap:32px;padding-block:48px;border-bottom:1px solid var(--line)}
.biz-detail:first-child{border-top:1px solid var(--line)}
.biz-detail .biz-icon{width:96px;height:96px}
.biz-detail .biz-icon svg{width:44px;height:44px}
.biz-detail h2{font-size:24px;margin:0 0 4px}
.biz-detail .en{font-family:var(--font-display);font-weight:700;font-size:12px;letter-spacing:.14em;color:var(--sky);margin:0 0 16px}
.biz-detail ul{margin:16px 0 20px;padding-left:1.2em}
.biz-detail li{margin-bottom:.3em}
@media (max-width:600px){.biz-detail{grid-template-columns:1fr;gap:16px}.biz-detail .biz-icon{width:64px;height:64px}}

.classes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.classes article{background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:28px}
.classes h3{font-family:var(--font-round);margin:0 0 8px;font-size:20px}
.classes p{margin:0;color:var(--ink-soft);font-size:15px}
@media (max-width:860px){.classes{grid-template-columns:1fr}}

.message{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:64px;align-items:start}
.message .ph{aspect-ratio:4/5;max-width:100%}
.signature{margin-top:40px;text-align:right}
.signature .role{font-size:13px;color:var(--ink-soft);margin:0}
.signature .nm{font-family:var(--font-round);font-weight:700;font-size:26px;margin:0;letter-spacing:.1em}
@media (max-width:860px){.message{grid-template-columns:1fr;gap:32px}.message .ph{max-width:360px}}

.news-list a{text-decoration:none}
.news-list a:hover{color:var(--sky)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 24px}
.filters button{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:6px 16px;border-radius:999px;cursor:pointer}
.filters button[aria-pressed="true"]{background:var(--sky);border-color:var(--sky);color:var(--on-sky)}

.form{display:grid;gap:24px;max-width:720px}
.field{display:grid;gap:8px}
.field label,.field legend{font-weight:700;font-size:15px;display:flex;align-items:center;gap:8px}
.req,.opt{font-size:11px;font-weight:700;padding:1px 8px;border-radius:3px}
.req{background:var(--sprout);color:var(--sprout-ink)}
.opt{background:var(--bg-alt);color:var(--ink-soft);border:1px solid var(--line)}
.field input[type=text],.field input[type=email],.field input[type=tel],.field textarea,.field select{font:inherit;font-size:16px;width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--ink)}
.field textarea{min-height:180px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--sky);outline-offset:1px}
fieldset.field{border:0;padding:0;margin:0}
.radios{display:flex;flex-wrap:wrap;gap:10px 20px}
.radios label{font-weight:400}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.hp{position:absolute;left:-9999px}
.submit{font:inherit;font-weight:700;font-size:16px;background:var(--sky);color:var(--on-sky);border:0;border-radius:999px;padding:16px 48px;cursor:pointer;justify-self:start}
.submit:hover{opacity:.9}
.notice{background:var(--sky-pale);border-radius:6px;padding:16px 20px;font-size:14px}
.contact-side{display:grid;gap:16px;align-content:start}
.contact-side .box{border:1px solid var(--line);border-radius:6px;padding:24px;background:var(--bg)}
.contact-side .tel{font-family:var(--font-display);font-weight:700;font-size:26px;font-variant-numeric:tabular-nums;margin:4px 0;user-select:all}
.contact-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:56px}
@media (max-width:900px){.contact-layout{grid-template-columns:1fr}}
.job{display:grid;grid-template-columns:200px minmax(0,1fr)}