/* =========================================================
   ACTIVITY LAB — 中学・高校 英語授業アクティビティ大全
   ========================================================= */
:root{
  --ink:#16233c; --ink2:#2b3a58; --ink3:#5d6b85;
  --paper:#fbf7f0; --paper2:#fff; --line:#e6ded1;
  --accent:#ff5a4d; --accent2:#ffe8e4;
  --teal:#12a594; --teal2:#e2f5f2;
  --gold:#e0a324; --gold2:#fdf3dd;
  --violet:#6c5ce7; --violet2:#eeecfd;
  --radius:16px;
  --shadow:0 1px 2px rgba(22,35,60,.05), 0 8px 24px rgba(22,35,60,.07);
  --shadow-l:0 24px 60px rgba(22,35,60,.18);
  --hd:64px;
  --font:"Zen Kaku Gothic New",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;
  --font-en:"Outfit","Zen Kaku Gothic New",sans-serif;
}
html[data-t="dark"]{
  --ink:#eef2f8; --ink2:#c9d3e4; --ink3:#8d9ab4;
  --paper:#10151f; --paper2:#18202e; --line:#2a3446;
  --accent:#ff7266; --accent2:#3a2320;
  --teal:#3ecfbc; --teal2:#12302c;
  --gold:#f0bc4e; --gold2:#332810;
  --violet:#9d92f5; --violet2:#241f45;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  --shadow-l:0 24px 60px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font); color:var(--ink); background:var(--paper);
  -webkit-font-smoothing:antialiased; line-height:1.75; font-size:15px;
  overflow-x:hidden;
}
img{max-width:100%}
button,input,select,textarea{font-family:inherit; font-size:inherit; color:inherit}
button{cursor:pointer; border:0; background:none}
a{color:inherit}
::selection{background:var(--accent); color:#fff}

/* ---------- splash ---------- */
.splash{position:fixed; inset:0; z-index:9999; background:var(--ink); display:grid; place-items:center; transition:opacity .5s, visibility .5s}
.splash.off{opacity:0; visibility:hidden}
.splash-in{text-align:center; color:#fbf7f0}
.splash-mark{display:flex; flex-direction:column; gap:6px; align-items:center; margin:0 auto 18px}
.splash-mark i{display:block; height:7px; border-radius:4px; background:#fbf7f0; animation:sm .9s ease-out both}
.splash-mark i:nth-child(1){width:78px}
.splash-mark i:nth-child(2){width:78px; animation-delay:.1s}
.splash-mark i:nth-child(3){width:44px; background:var(--accent); animation-delay:.2s}
@keyframes sm{from{width:0!important;opacity:0}}
.splash-t{font-family:var(--font-en); font-weight:800; font-size:26px; letter-spacing:.16em}
.splash-s{font-size:12.5px; opacity:.7; letter-spacing:.08em; margin-top:4px}
.splash-bar{width:150px; height:3px; background:rgba(255,255,255,.16); border-radius:3px; margin:22px auto 0; overflow:hidden}
.splash-bar i{display:block; height:100%; width:0; background:var(--accent); animation:sb 1.1s ease-out forwards}
@keyframes sb{to{width:100%}}

/* ---------- header ---------- */
.hd{position:sticky; top:0; z-index:500; background:color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter:saturate(180%) blur(14px); border-bottom:1px solid var(--line)}
.hd-in{max-width:1180px; margin:0 auto; padding:0 16px; height:var(--hd); display:flex; align-items:center; justify-content:space-between; gap:12px}
.brand{display:flex; align-items:center; gap:11px; text-decoration:none; min-width:0}
.brand-mark{width:34px; height:34px; border-radius:10px; background:var(--ink); display:flex; flex-direction:column; justify-content:center; align-items:center; gap:3.5px; flex:none}
.brand-mark i{display:block; height:3.5px; border-radius:2px; background:var(--paper)}
.brand-mark i:nth-child(1),.brand-mark i:nth-child(2){width:19px}
.brand-mark i:nth-child(3){width:11px; background:var(--accent); align-self:flex-start; margin-left:8px}
.brand-txt{display:flex; flex-direction:column; line-height:1.25; min-width:0}
.brand-txt b{font-family:var(--font-en); font-weight:800; font-size:15.5px; letter-spacing:.1em}
.brand-txt i{font-style:normal; font-size:10.5px; color:var(--ink3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.hd-tools{display:flex; gap:6px; align-items:center; flex:none}
.hd-home{display:inline-flex; align-items:center; gap:5px; padding:0 13px; height:38px; border-radius:11px; border:1px solid var(--line); background:var(--paper2); font-size:12px; font-weight:800; text-decoration:none; white-space:nowrap; transition:.15s}
.hd-home i{font-style:normal; font-size:11px; opacity:.6}
.hd-home:hover{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.hd-home:hover i{opacity:1}
.icobtn{width:38px; height:38px; border-radius:11px; border:1px solid var(--line); background:var(--paper2); display:grid; place-items:center; font-size:14px; font-weight:700; transition:.15s}
.icobtn:hover{border-color:var(--ink3)}
.icobtn.on{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.burger{flex-direction:column; gap:4px; display:none}
.burger i{display:block; width:15px; height:2px; background:currentColor; border-radius:2px}
.nav{max-width:1180px; margin:0 auto; padding:0 10px 0; display:flex; gap:2px; overflow-x:auto; scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nv{display:flex; align-items:center; gap:6px; padding:9px 13px; font-size:13px; font-weight:700; color:var(--ink3); border-bottom:2.5px solid transparent; white-space:nowrap; transition:.15s}
.nv i{font-style:normal; font-size:13px}
.nv:hover{color:var(--ink)}
.nv.on{color:var(--ink); border-bottom-color:var(--accent)}

/* ---------- drawer ---------- */
.drawer{position:fixed; inset:0; z-index:900; visibility:hidden}
.drawer.on{visibility:visible}
.drawer-bg{position:absolute; inset:0; background:rgba(15,22,38,.5); opacity:0; transition:.25s}
.drawer.on .drawer-bg{opacity:1}
.drawer-in{position:absolute; right:0; top:0; bottom:0; width:min(340px,88vw); background:var(--paper2); box-shadow:var(--shadow-l); padding:16px; overflow-y:auto; transform:translateX(100%); transition:.28s cubic-bezier(.3,.8,.3,1)}
.drawer.on .drawer-in{transform:none}
.drawer-top{display:flex; justify-content:space-between; align-items:center; margin-bottom:12px}
.drawer-h{font-family:var(--font-en); font-weight:800; letter-spacing:.16em; font-size:12px; color:var(--ink3)}
.drawer-x{font-size:24px; line-height:1; color:var(--ink3)}
.dnv{display:grid; grid-template-columns:26px 1fr; gap:0 10px; width:100%; text-align:left; padding:10px 8px; border-radius:12px; transition:.15s}
.dnv:hover{background:var(--paper)}
.dnv i{grid-row:1/3; font-style:normal; font-size:16px; align-self:center; text-align:center}
.dnv b{font-size:14.5px}
.dnv small{font-size:11px; color:var(--ink3)}
.drawer-sec{font-size:11px; font-weight:800; letter-spacing:.12em; color:var(--ink3); margin:18px 0 6px; padding:0 8px}
.dset{display:flex; justify-content:space-between; align-items:center; padding:9px 8px; font-size:13.5px; border-radius:10px}
.dset:hover{background:var(--paper)}
.dfield{display:block; padding:6px 8px}
.dfield span{display:block; font-size:11.5px; color:var(--ink3); margin-bottom:3px}
.dfield input{width:100%; padding:8px 10px; border:1px solid var(--line); border-radius:9px; background:var(--paper); font-size:13px}
.dbtn{margin:8px; padding:9px 16px; background:var(--ink); color:var(--paper); border-radius:10px; font-weight:700; font-size:13px}
.drawer-foot{margin-top:24px; padding:12px 8px; border-top:1px solid var(--line); font-size:11px; color:var(--ink3)}

/* ---------- layout ---------- */
.wrap{max-width:1180px; margin:0 auto; padding:0 16px 90px}
.view{display:none; animation:fade .3s}
.view.on{display:block}
@keyframes fade{from{opacity:0; transform:translateY(6px)}}
.page-h{padding:30px 0 16px}
.page-h h2{font-size:26px; margin:0 0 4px; letter-spacing:.02em}
.page-h p{margin:0; color:var(--ink3); font-size:13.5px}
.sec-h{display:flex; align-items:baseline; justify-content:space-between; margin:44px 0 14px; gap:12px}
.sec-h h2{font-size:19px; margin:0; position:relative; padding-left:13px}
.sec-h h2::before{content:""; position:absolute; left:0; top:.35em; width:5px; height:1em; background:var(--accent); border-radius:3px}
.lnk{color:var(--ink3); font-size:12.5px; font-weight:700; text-decoration:underline; text-underline-offset:3px}
.lnk:hover{color:var(--accent)}

/* ---------- hero ---------- */
.hero{position:relative; overflow:hidden; background:var(--ink); color:#fbf7f0; margin-bottom:6px}
.hero-bg{position:absolute; inset:0; opacity:.5;
  background-image:
    radial-gradient(circle at 82% 18%, rgba(255,90,77,.45), transparent 46%),
    radial-gradient(circle at 12% 88%, rgba(18,165,148,.4), transparent 44%),
    repeating-linear-gradient(0deg, transparent 0 34px, rgba(255,255,255,.045) 34px 35px);
}
.hero-in{position:relative; max-width:1180px; margin:0 auto; padding:56px 16px 48px}
.hero-eyebrow{font-family:var(--font-en); font-size:11px; letter-spacing:.28em; font-weight:600; opacity:.65; margin:0 0 12px}
.hero-t{font-size:clamp(27px,5.2vw,46px); line-height:1.32; margin:0 0 16px; font-weight:900; letter-spacing:.01em}
.hero-t b{color:var(--accent); font-weight:900}
.hero-d{max-width:640px; font-size:14.5px; line-height:1.9; opacity:.86; margin:0 0 24px}
.hero-d b{color:#fff}
.hero-btns{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:28px}
.btn{padding:12px 22px; border-radius:12px; font-weight:800; font-size:14px; transition:.16s; white-space:nowrap}
.btn-p{background:var(--accent); color:#fff; box-shadow:0 6px 18px rgba(255,90,77,.32)}
.btn-p:hover{transform:translateY(-2px); box-shadow:0 10px 26px rgba(255,90,77,.4)}
.btn-s{background:transparent; color:inherit; border:1.5px solid currentColor}
.btn-s:hover{background:rgba(127,127,127,.12)}
.hero-quick{display:flex; align-items:center; gap:8px; flex-wrap:wrap; font-size:12.5px; opacity:.9}
.hero-quick span{opacity:.65; margin-right:2px}
.qchip{padding:6px 14px; border-radius:99px; border:1px solid rgba(255,255,255,.28); font-size:12.5px; font-weight:700; transition:.15s}
.qchip:hover{background:#fbf7f0; color:var(--ink); border-color:#fbf7f0}

/* ---------- stats ---------- */
.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-top:26px}
.stat{background:var(--paper2); border:1px solid var(--line); border-radius:var(--radius); padding:16px; text-align:center}
.stat b{display:block; font-family:var(--font-en); font-size:26px; font-weight:800; line-height:1.2}
.stat span{font-size:11.5px; color:var(--ink3)}

/* ---------- cards ---------- */
.grid{display:grid; gap:14px}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--paper2); border:1px solid var(--line); border-radius:var(--radius); padding:16px 16px 14px; cursor:pointer; transition:.18s; position:relative; display:flex; flex-direction:column; overflow:hidden}
.card::before{content:""; position:absolute; left:0; top:0; bottom:0; width:4px; background:var(--c,var(--accent)); opacity:.85}
.card:hover{transform:translateY(-3px); box-shadow:var(--shadow); border-color:color-mix(in srgb,var(--c,var(--accent)) 45%, var(--line))}
.card-top{display:flex; gap:6px; align-items:center; flex-wrap:wrap; margin-bottom:9px}
.pill{font-size:10.5px; font-weight:800; padding:3px 9px; border-radius:99px; letter-spacing:.03em; white-space:nowrap}
.pill-cat{background:color-mix(in srgb,var(--c) 15%, transparent); color:var(--c)}
.pill-min{background:var(--ink); color:var(--paper); font-family:var(--font-en)}
.pill-g{background:var(--paper); border:1px solid var(--line); color:var(--ink3)}
.pill-lv{color:var(--gold); font-size:11px; letter-spacing:.1em}
.card h3{margin:0 0 2px; font-size:16.5px; line-height:1.4; font-family:var(--font-en); font-weight:800; letter-spacing:.005em}
.card .ja{font-size:12.5px; color:var(--ink3); font-weight:700; margin-bottom:8px}
.card .aim{font-size:12.5px; line-height:1.75; color:var(--ink2); flex:1;
  display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden}
.card-foot{display:flex; justify-content:space-between; align-items:center; margin-top:11px; padding-top:10px; border-top:1px dashed var(--line)}
.card-tags{display:flex; gap:4px; flex-wrap:wrap; font-size:10.5px; color:var(--ink3)}
.card-tags i{font-style:normal; background:var(--paper); border:1px solid var(--line); padding:1px 7px; border-radius:99px}
.card-acts{display:flex; gap:2px; flex:none}
.iact{width:28px; height:28px; border-radius:8px; display:grid; place-items:center; font-size:13px; color:var(--ink3); transition:.15s}
.iact:hover{background:var(--paper); color:var(--accent)}
.iact.on{color:var(--gold)}
.form-ico{position:absolute; right:12px; top:12px; opacity:.13}
.empty{grid-column:1/-1; text-align:center; padding:52px 16px; color:var(--ink3); font-size:14px; border:1.5px dashed var(--line); border-radius:var(--radius)}
.more{text-align:center; margin-top:22px}
.more.off{display:none}

/* ---------- category grid ---------- */
.catgrid{display:grid; grid-template-columns:repeat(4,1fr); gap:10px}
.catcard{background:var(--paper2); border:1px solid var(--line); border-radius:14px; padding:14px; text-align:left; transition:.18s; position:relative; overflow:hidden}
.catcard:hover{transform:translateY(-3px); box-shadow:var(--shadow)}
.catcard i{font-style:normal; font-size:22px; display:block; margin-bottom:6px}
.catcard b{display:block; font-size:13.5px}
.catcard small{color:var(--ink3); font-size:11px}
.catcard::after{content:""; position:absolute; right:-18px; bottom:-18px; width:56px; height:56px; border-radius:50%; background:var(--c); opacity:.1}

/* ---------- tag cloud / scenes ---------- */
.tagcloud{display:flex; flex-wrap:wrap; gap:7px}
.tcl{padding:7px 14px; border-radius:99px; border:1px solid var(--line); background:var(--paper2); font-size:12.5px; font-weight:700; transition:.15s}
.tcl:hover{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.tcl b{font-family:var(--font-en); color:var(--ink3); font-size:11px; margin-left:5px; font-weight:600}
.tcl:hover b{color:rgba(255,255,255,.6)}
.scene{background:var(--paper2); border:1px solid var(--line); border-left:4px solid var(--c); border-radius:var(--radius); padding:16px; text-align:left; transition:.18s}
.scene:hover{transform:translateY(-3px); box-shadow:var(--shadow)}
.scene b{display:block; font-size:14.5px; margin-bottom:5px}
.scene p{margin:0; font-size:12.5px; color:var(--ink3); line-height:1.7}

/* ---------- promo ---------- */
.promo{margin-top:52px; display:grid; grid-template-columns:96px 1fr; gap:18px; align-items:center; background:linear-gradient(120deg,var(--violet2),var(--teal2)); border:1px solid var(--line); border-radius:22px; padding:26px}
.promo-i{font-size:56px; text-align:center}
.promo-b h3{margin:0 0 7px; font-size:19px}
.promo-b p{margin:0 0 14px; font-size:13.5px; color:var(--ink2); line-height:1.85}

/* ---------- search ---------- */
.searchbar{position:relative; margin-bottom:16px}
.searchbar input{width:100%; padding:14px 44px 14px 18px; border:1.5px solid var(--line); border-radius:14px; background:var(--paper2); font-size:15px; transition:.15s}
.searchbar input:focus{outline:0; border-color:var(--accent)}
.sbtn{position:absolute; right:8px; top:50%; transform:translateY(-50%); width:30px; height:30px; border-radius:8px; color:var(--ink3); font-size:18px}
.facets{display:flex; flex-direction:column; gap:9px; margin-bottom:18px}
.frow{display:flex; align-items:flex-start; gap:10px; flex-wrap:wrap}
.flabel{flex:none; width:74px; font-size:11.5px; font-weight:800; color:var(--ink3); padding-top:6px; letter-spacing:.04em}
.fchips{display:flex; gap:5px; flex-wrap:wrap; flex:1}
.fc{padding:5px 12px; border-radius:99px; border:1px solid var(--line); background:var(--paper2); font-size:12px; font-weight:700; color:var(--ink2); transition:.13s}
.fc:hover{border-color:var(--ink3)}
.fc.on{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.fc.on.acc{background:var(--accent); border-color:var(--accent); color:#fff}
.resbar{display:flex; justify-content:space-between; align-items:center; gap:10px; margin-bottom:14px; padding-bottom:10px; border-bottom:1px solid var(--line); font-size:13px; color:var(--ink3)}
.resbar b{color:var(--accent); font-family:var(--font-en); font-size:17px}
.resbar-r{display:flex; gap:10px; align-items:center}
#sortSel{padding:6px 10px; border:1px solid var(--line); border-radius:9px; background:var(--paper2); font-size:12.5px}

/* ---------- time view ---------- */
.timegrid{display:grid; grid-template-columns:repeat(5,1fr); gap:10px; margin-bottom:24px}
.tcard{background:var(--paper2); border:1.5px solid var(--line); border-radius:var(--radius); padding:20px 8px; text-align:center; transition:.16s}
.tcard:hover{transform:translateY(-3px); border-color:var(--accent)}
.tcard.on{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.tcard b{display:block; font-family:var(--font-en); font-size:30px; font-weight:800; line-height:1}
.tcard span{font-size:11px; opacity:.7}
.tcard i{display:block; font-style:normal; font-size:10.5px; color:var(--accent); font-weight:800; margin-top:4px}
.tcard.on i{color:var(--paper)}
.tnote{background:var(--gold2); border:1px solid var(--line); border-radius:14px; padding:14px 18px; font-size:13px; margin-bottom:18px; line-height:1.8}

/* ---------- builder ---------- */
.bld-top{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-bottom:16px}
.bld-f{font-size:12.5px; color:var(--ink3); display:flex; align-items:center; gap:6px}
.bld-f select,.bld-f input{padding:7px 10px; border:1px solid var(--line); border-radius:9px; background:var(--paper2); font-size:13px}
.bar{height:26px; border-radius:8px; background:var(--paper2); border:1px solid var(--line); display:flex; overflow:hidden; margin-bottom:16px}
.bar i{display:block; height:100%; font-style:normal; font-size:10px; color:#fff; font-weight:800; display:grid; place-items:center; overflow:hidden; white-space:nowrap; transition:.3s}
.bar .rest{background:repeating-linear-gradient(45deg,var(--line) 0 6px,transparent 6px 12px); flex:1}
.bld-list{display:flex; flex-direction:column; gap:10px}
.bstep{display:grid; grid-template-columns:60px 1fr auto; gap:14px; align-items:center; background:var(--paper2); border:1px solid var(--line); border-left:4px solid var(--c); border-radius:14px; padding:13px 16px}
.bstep-t{font-family:var(--font-en); font-weight:800; font-size:13px; color:var(--ink3); text-align:right; line-height:1.3}
.bstep-t b{display:block; color:var(--ink); font-size:15px}
.bstep-m h4{margin:0 0 2px; font-size:15px; font-family:var(--font-en)}
.bstep-m p{margin:0; font-size:12px; color:var(--ink3)}
.bstep-a{display:flex; gap:3px}
.bld-ai{margin-top:20px}

/* ---------- 指導案ビルダー ---------- */
.plan-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:11px; margin-bottom:12px}
.plan-grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:11px; margin-bottom:16px}
.pf{display:flex; flex-direction:column; gap:4px}
.pf-wide{grid-column:1/-1}
.pf-wide2{grid-column:span 2}
.pf-wide3{grid-column:span 3}
.plan-more{border:1px solid var(--line); border-radius:16px; padding:0 18px; margin-bottom:16px; background:var(--paper2)}
.plan-more[open]{padding-bottom:18px}
.plan-more summary{cursor:pointer; padding:15px 0; font-size:13.5px; font-weight:800; color:var(--ink2); list-style:none}
.plan-more summary::-webkit-details-marker{display:none}
.plan-more summary::before{content:"▸ "; color:var(--accent)}
.plan-more[open] summary::before{content:"▾ "}
.plan-more .plan-grid,.plan-more .plan-grid3{margin-bottom:12px}
.pf span{font-size:11.5px; font-weight:800; color:var(--ink3)}
.pf input,.pf select,.pf textarea{padding:9px 11px; border:1.5px solid var(--line); border-radius:10px; background:var(--paper2); font-size:13.5px; width:100%; resize:vertical}
.pf input:focus,.pf textarea:focus,.pf select:focus{outline:0; border-color:var(--accent)}

/* ---------- 学習指導要領 ---------- */
.cur-tabs{display:flex; gap:6px; flex-wrap:wrap; margin-bottom:20px; border-bottom:1px solid var(--line)}
.curtab{padding:9px 16px; font-size:13.5px; font-weight:800; color:var(--ink3); border-bottom:2.5px solid transparent}
.curtab.on{color:var(--ink); border-bottom-color:var(--accent)}
.gdoc .tcl{margin:2px 3px}
.gdoc blockquote{margin:16px 0; padding:12px 18px; border-left:4px solid var(--gold); background:var(--gold2); border-radius:0 12px 12px 0; font-size:13px}
.cur-ask{margin-top:40px; background:var(--violet2); border:1px solid var(--line); border-radius:18px; padding:22px; text-align:center}
.cur-ask p{margin:0 0 14px; font-size:13.5px}

/* ---------- AI ---------- */
.ai-tabs{display:flex; gap:6px; margin-bottom:18px; border-bottom:1px solid var(--line)}
.aitab{padding:9px 18px; font-size:13.5px; font-weight:800; color:var(--ink3); border-bottom:2.5px solid transparent}
.aitab.on{color:var(--ink); border-bottom-color:var(--accent)}
.aipane{display:none}
.aipane.on{display:block}
.genform{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-bottom:16px}
.gf{display:flex; flex-direction:column; gap:4px; font-size:12px}
.gf-wide{grid-column:1/-1}
.gf span{font-weight:800; color:var(--ink3); font-size:11.5px}
.gf span b{color:var(--accent); font-size:10px; margin-left:4px}
.gf select,.gf input,.gf textarea{padding:10px 12px; border:1.5px solid var(--line); border-radius:11px; background:var(--paper2); font-size:14px; width:100%; resize:vertical}
.gf select:focus,.gf textarea:focus{outline:0; border-color:var(--accent)}
.chips{display:flex; gap:6px; flex-wrap:wrap}
.vchip{padding:6px 13px; border-radius:99px; border:1px solid var(--line); background:var(--paper2); font-size:12px; font-weight:700; transition:.13s}
.vchip.on{background:var(--violet); color:#fff; border-color:var(--violet)}
.genbtns{display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:22px}
.genout:empty{display:none}
.aiout{background:var(--paper2); border:1px solid var(--line); border-radius:var(--radius); padding:22px 24px; margin-bottom:14px; font-size:14px; line-height:1.95; position:relative}
.aiout h3{margin:0 0 4px; font-size:18px}
.aiout h4{margin:20px 0 6px; font-size:15px; color:var(--accent); padding-left:11px; border-left:4px solid var(--accent); line-height:1.3}
.aiout ul,.aiout ol{margin:6px 0 6px; padding-left:22px}
.aiout li{margin:3px 0}
.aiout p{margin:6px 0}
.aiout code{background:var(--paper); padding:2px 6px; border-radius:5px; font-size:13px}
.aiout strong{color:var(--accent)}
.aiout hr{border:0; border-top:1px dashed var(--line); margin:18px 0}
.aiout .en{background:var(--teal2); border-radius:10px; padding:3px 10px; display:inline-block; font-family:var(--font-en); font-weight:600}
.aiout-tools{display:flex; gap:8px; margin-top:16px; padding-top:14px; border-top:1px dashed var(--line)}
.mini{padding:6px 13px; border-radius:9px; border:1px solid var(--line); font-size:12px; font-weight:700; background:var(--paper2); transition:.15s}
.mini:hover{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.thinking{display:flex; align-items:center; gap:10px; padding:22px; color:var(--ink3); font-size:13.5px}
.thinking i{width:7px; height:7px; border-radius:50%; background:var(--accent); animation:bl 1s infinite}
.thinking i:nth-child(2){animation-delay:.15s}
.thinking i:nth-child(3){animation-delay:.3s}
@keyframes bl{0%,60%,100%{opacity:.25; transform:translateY(0)}30%{opacity:1; transform:translateY(-4px)}}

/* chat */
.chat{min-height:320px; max-height:56vh; overflow-y:auto; padding:6px 2px 12px; display:flex; flex-direction:column; gap:12px}
.msg{max-width:min(84%,720px); padding:12px 16px; border-radius:16px; font-size:14px; line-height:1.85; white-space:pre-wrap; word-break:break-word}
.msg.ai{background:var(--paper2); border:1px solid var(--line); align-self:flex-start; border-bottom-left-radius:5px}
.msg.me{background:var(--ink); color:var(--paper); align-self:flex-end; border-bottom-right-radius:5px}
.msg.rich{white-space:normal}
.msg.rich p{margin:.5em 0}
.msg.rich p:first-of-type{margin-top:0}
.msg.rich p:last-child{margin-bottom:0}
.msg.rich h4{margin:14px 0 4px; font-size:14.5px; color:var(--accent)}
.msg.rich ul,.msg.rich ol{margin:6px 0; padding-left:20px}
.msg.rich li{margin:2px 0}
.msg.rich table{width:100%; border-collapse:collapse; margin:8px 0; font-size:12.5px}
.msg.rich th,.msg.rich td{border:1px solid var(--line); padding:5px 8px}
.msg .who{display:block; font-size:10.5px; font-weight:800; color:var(--ink3); margin-bottom:3px; letter-spacing:.06em}
.msg.me .who{color:rgba(255,255,255,.55)}
.chip-row{display:flex; gap:6px; flex-wrap:wrap; margin:8px 0}
.chatbar{display:flex; gap:8px; align-items:flex-end; border-top:1px solid var(--line); padding-top:12px}
.chatbar textarea{flex:1; padding:11px 14px; border:1.5px solid var(--line); border-radius:14px; background:var(--paper2); font-size:14px; resize:none; max-height:140px}
.chatbar textarea:focus{outline:0; border-color:var(--accent)}
.sendbtn{padding:11px 20px; background:var(--accent); color:#fff; border-radius:12px; font-weight:800; font-size:13.5px}

/* ---------- modal ---------- */
.modal{position:fixed; inset:0; z-index:800; visibility:hidden}
.modal.on{visibility:visible}
.modal-bg{position:absolute; inset:0; background:rgba(15,22,38,.55); opacity:0; transition:.25s}
.modal.on .modal-bg{opacity:1}
.modal-in{position:absolute; left:50%; top:50%; transform:translate(-50%,-46%) scale(.97); width:min(760px,94vw); max-height:90vh; overflow-y:auto; background:var(--paper); border-radius:22px; box-shadow:var(--shadow-l); opacity:0; transition:.26s cubic-bezier(.3,.8,.3,1)}
.modal.on .modal-in{transform:translate(-50%,-50%) scale(1); opacity:1}
.modal-x{position:sticky; float:right; top:12px; right:12px; margin:12px 12px 0; width:34px; height:34px; border-radius:50%; background:var(--paper2); border:1px solid var(--line); font-size:19px; color:var(--ink3); z-index:3}
.modal-body{padding:26px 30px 34px}

/* activity detail */
.dt-top{display:flex; gap:6px; flex-wrap:wrap; margin-bottom:12px}
.dt h2{margin:0 0 3px; font-size:26px; font-family:var(--font-en); font-weight:800; line-height:1.25}
.dt .dt-ja{font-size:15px; color:var(--ink2); font-weight:700; margin-bottom:16px}
.dt-meta{display:grid; grid-template-columns:repeat(4,1fr); gap:8px; margin-bottom:20px}
.dtm{background:var(--paper2); border:1px solid var(--line); border-radius:12px; padding:10px; text-align:center}
.dtm b{display:block; font-size:14px; line-height:1.4}
.dtm span{font-size:10px; color:var(--ink3)}
.dsec{margin-bottom:22px}
.dsec h4{display:flex; align-items:center; gap:8px; margin:0 0 8px; font-size:14.5px; letter-spacing:.02em}
.dsec h4::before{content:""; width:5px; height:16px; border-radius:3px; background:var(--c,var(--accent))}
.dsec p{margin:0; font-size:14px; line-height:1.9}
.dbox{background:var(--paper2); border:1px solid var(--line); border-radius:14px; padding:14px 18px; font-size:14px; line-height:1.9}
.dsteps{counter-reset:s; list-style:none; margin:0; padding:0}
.dsteps li{counter-increment:s; position:relative; padding:5px 0 5px 38px; font-size:14px; line-height:1.85}
.dsteps li::before{content:counter(s); position:absolute; left:0; top:8px; width:24px; height:24px; border-radius:50%; background:var(--c,var(--accent)); color:#fff; font-size:11.5px; font-weight:800; display:grid; place-items:center; font-family:var(--font-en)}
.talk{display:flex; flex-direction:column; gap:9px}
.tk{background:var(--teal2); border-radius:14px; padding:12px 16px; position:relative}
.tk .tk-en{font-family:var(--font-en); font-size:15px; font-weight:600; line-height:1.6; color:var(--ink)}
.tk .tk-ja{font-size:12.5px; color:var(--ink3); margin-top:4px}
.tk-say{position:absolute; right:10px; top:9px; width:26px; height:26px; border-radius:50%; background:var(--paper2); border:1px solid var(--line); font-size:12px; display:grid; place-items:center; opacity:.7}
.tk-say:hover{opacity:1}
html[data-alt="1"] .tk .tk-en{font-size:19px; line-height:1.55}
html[data-alt="1"] .tk{background:var(--teal2); border:1.5px solid var(--teal)}
.note{border-radius:14px; padding:13px 17px; font-size:13.5px; line-height:1.85; display:grid; grid-template-columns:22px 1fr; gap:10px}
.note i{font-style:normal; font-size:16px}
.note-tip{background:var(--gold2)}
.note-cau{background:var(--accent2)}
.note-var{background:var(--violet2)}
.dt-acts{display:flex; gap:8px; flex-wrap:wrap; margin-top:24px; padding-top:18px; border-top:1px solid var(--line)}
.dt-ai-menu{margin-top:14px; padding:16px 18px; border-radius:16px; background:linear-gradient(120deg,var(--violet2),var(--teal2)); border:1px solid var(--line)}
.dt-ai-lead{display:block; font-size:12.5px; font-weight:800; color:var(--ink2); margin-bottom:10px}
.dt-ai-btns{display:flex; gap:8px; flex-wrap:wrap}
.dt-ai-btns .btn{background:var(--paper2); border-color:var(--line)}
.dt-ai-btns .btn:hover{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.ws-prev{background:var(--paper); border:1px dashed var(--line); border-radius:12px; padding:14px 18px; margin-bottom:6px}
.ws-prev b{display:block; font-size:16px; margin-bottom:4px}
.ws-prev p{margin:2px 0; font-size:13.5px}
.diag{display:block; margin:0 auto 6px}
.diag-cap{text-align:center; font-size:11px; color:var(--ink3); margin-bottom:14px}
.rel{display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-top:8px}
.relc{background:var(--paper2); border:1px solid var(--line); border-radius:11px; padding:10px 12px; text-align:left; font-size:12px; transition:.15s}
.relc:hover{border-color:var(--accent)}
.relc b{display:block; font-family:var(--font-en); font-size:13px; margin-bottom:1px}
.relc span{color:var(--ink3); font-size:10.5px}

/* ---------- guide ---------- */
.gdoc{max-width:780px; font-size:14.5px; line-height:2}
.gdoc h3{margin:34px 0 8px; font-size:19px; padding-left:12px; border-left:5px solid var(--accent)}
.gdoc h4{margin:22px 0 4px; font-size:15.5px; color:var(--teal)}
.gdoc p{margin:8px 0}
.gdoc ul{padding-left:22px}
.gdoc li{margin:4px 0}
.gdoc .gq{background:var(--paper2); border:1px solid var(--line); border-left:4px solid var(--gold); border-radius:12px; padding:14px 18px; margin:14px 0; font-size:13.5px}
.gdoc table{width:100%; border-collapse:collapse; margin:14px 0; font-size:13px}
.gdoc th,.gdoc td{border:1px solid var(--line); padding:8px 11px; text-align:left}
.gdoc th{background:var(--paper2); font-weight:800}
.gdoc h5{margin:20px 0 4px; font-size:14.5px; color:var(--accent)}
.aiout table{width:100%; border-collapse:collapse; margin:12px 0; font-size:13px}
.aiout th,.aiout td{border:1px solid var(--line); padding:7px 10px; text-align:left}
.aiout th{background:var(--paper)}
.aiout h5{margin:14px 0 4px; font-size:14px; color:var(--teal)}
.aiout blockquote{margin:12px 0; padding:10px 16px; border-left:4px solid var(--gold); background:var(--gold2); border-radius:0 10px 10px 0}

/* ---------- footer ---------- */
.ft{background:#16233c; color:#fbf7f0; margin-top:60px; padding:44px 16px 90px}
.ft-in{max-width:1180px; margin:0 auto; text-align:center}
.ft-brand{display:inline-flex; align-items:center; gap:12px; margin-bottom:14px; text-align:left}
.ft-brand .brand-mark{background:#fbf7f0}
.ft-brand .brand-mark i{background:var(--ink)}
.ft-brand .brand-mark i:nth-child(3){background:var(--accent)}
.ft-brand b{display:block; font-family:var(--font-en); font-weight:800; letter-spacing:.12em; font-size:15px}
.ft-brand span{font-size:11px; opacity:.65}
.ft-d{font-size:13.5px; line-height:2; opacity:.85; max-width:620px; margin:0 auto 20px}
.ft-d a{color:var(--accent); font-weight:700; text-decoration:underline; text-underline-offset:3px}
.ft-d b{color:#fff}
.ft-links{display:flex; gap:8px; flex-wrap:wrap; justify-content:center; margin-bottom:22px}
.ft-links a{padding:7px 16px; border:1px solid rgba(255,255,255,.25); border-radius:99px; font-size:12.5px; font-weight:700; text-decoration:none; transition:.15s}
.ft-links a:hover{background:#fbf7f0; color:var(--ink); border-color:#fbf7f0}
.ft-in small{font-size:11px; opacity:.5}
.ft-in small a{color:inherit}
.ft-map{display:grid; grid-template-columns:1fr 1fr 2fr; gap:26px; text-align:left; max-width:900px; margin:34px auto 26px; padding-top:26px; border-top:1px solid rgba(255,255,255,.14)}
.ft-col h4{margin:0 0 9px; font-size:11.5px; letter-spacing:.1em; opacity:.55; font-weight:800}
.ft-col a{display:inline-block; font-size:12px; text-decoration:none; opacity:.8; margin:0 12px 6px 0; transition:.15s}
.ft-col a:hover{opacity:1; color:var(--accent)}
.ft-col-wide a{margin-right:14px}
@media(max-width:720px){.ft-map{grid-template-columns:1fr; gap:20px; text-align:left}}

/* ---------- toast / fab ---------- */
.toast{position:fixed; left:50%; bottom:28px; transform:translate(-50%,20px); background:var(--ink); color:var(--paper); padding:11px 22px; border-radius:99px; font-size:13px; font-weight:700; opacity:0; pointer-events:none; transition:.25s; z-index:1000; box-shadow:var(--shadow-l)}
.toast.on{opacity:1; transform:translate(-50%,0)}
.totop{position:fixed; right:20px; bottom:86px; width:44px; height:44px; border-radius:14px;
  background:var(--paper2); color:var(--ink); border:1px solid var(--line); box-shadow:var(--shadow);
  font-size:18px; font-weight:800; z-index:600; opacity:0; pointer-events:none; transition:.22s; transform:translateY(8px)}
.totop.on{opacity:1; pointer-events:auto; transform:none}
.totop:hover{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.fab:not(.on) ~ .totop, body:has(.fab:not(.on)) .totop{bottom:22px}
.fab{position:fixed; right:20px; bottom:22px; width:54px; height:54px; border-radius:18px; background:var(--ink); color:var(--paper); display:grid; place-items:center; box-shadow:var(--shadow-l); cursor:pointer; z-index:600; transition:.2s; opacity:0; pointer-events:none}
.fab.on{opacity:1; pointer-events:auto}
.fab:hover{transform:translateY(-3px)}
.fab b{font-size:19px}
.fab i{position:absolute; top:-6px; right:-6px; min-width:22px; height:22px; border-radius:11px; background:var(--accent); color:#fff; font-style:normal; font-size:11px; font-weight:800; display:grid; place-items:center; padding:0 5px; font-family:var(--font-en)}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .g3,.catgrid{grid-template-columns:repeat(2,1fr)}
  .genform,.plan-grid{grid-template-columns:repeat(2,1fr)}
  .timegrid{grid-template-columns:repeat(4,1fr)}
}
@media(max-width:720px){
  .burger{display:flex}
  .nav{display:none}
  .hero-in{padding:40px 16px 36px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .g3,.catgrid,.genform,.rel,.plan-grid,.plan-grid3{grid-template-columns:1fr}
  .timegrid{grid-template-columns:repeat(3,1fr)}
  .promo{grid-template-columns:1fr; text-align:center; padding:22px}
  .modal-body{padding:20px 18px 28px}
  .dt-meta{grid-template-columns:repeat(2,1fr)}
  .flabel{width:100%; padding-top:0}
  .bstep{grid-template-columns:52px 1fr; gap:10px}
  .bstep-a{grid-column:1/-1; justify-content:flex-end}
  .dt h2{font-size:21px}
}

/* ---------- print ---------- */
@media print{
  .hd,.drawer,.fab,.toast,.modal,.bld-top,.hero,.nav{display:none!important}
  body{background:#fff; font-size:11pt}
  .wrap{padding:0; max-width:none}
  .bstep{break-inside:avoid; border:1px solid #ccc}
  .view{display:none!important}
  .view.on{display:block!important}
  .print-head{display:block!important}
}
.print-head{display:none; margin-bottom:16px; border-bottom:2px solid var(--ink); padding-bottom:8px}
.print-head h1{margin:0; font-size:18pt}
.print-head p{margin:2px 0 0; font-size:10pt; color:#555}

/* Word書き出しボタン */
.mini-p{background:var(--accent); color:#fff; border-color:var(--accent)}
.mini-p:hover{background:var(--ink); border-color:var(--ink)}

/* 授業案の時間セレクタ */
.planpick{display:inline-flex; align-items:stretch; gap:0}
.planpick .btn{border-radius:12px 0 0 12px; border-right:0}
.planpick select{border:1.5px solid var(--line); border-left:0; border-radius:0 12px 12px 0;
  background:var(--paper2); font-size:12.5px; font-weight:700; padding:0 8px; cursor:pointer}
.planpick select:focus{outline:0; border-color:var(--accent)}