/* AIB-DESIGN-SYSTEM v3 — プロデザイナー仕上げの共通デザイン+レイアウトパターン集(初期構築・修正後も維持) */
:root{
  /* ブランド */
  --brand:#3b5bdb; --brand-hover:#2f49b8; --brand-press:#27409f;
  --brand-soft:#eef2ff; --brand-soft-2:#e0e7ff; --brand-ink:#1e2a78;
  /* 面と境界 */
  --bg:#f6f8fc; --surface:#ffffff; --surface-2:#f9fafe; --surface-3:#f1f4fb;
  --line:#e6e9f2; --line-strong:#d4d9e8;
  /* テキスト階層 */
  --ink:#10172a; --text:#374151; --muted:#6b7280; --faint:#9aa3b2;
  /* セマンティック */
  --ok:#15803d; --ok-bg:#ecfdf3; --ok-line:#bbf7d0;
  --warn:#b45309; --warn-bg:#fffbeb; --warn-line:#fde68a;
  --err:#b91c1c; --err-bg:#fef2f2; --err-line:#fecaca;
  --info:#1e40af; --info-bg:#eff4ff; --info-line:#c7d6fe;
  /* 形状・影・余白 */
  --r-xs:6px; --r-sm:9px; --r:13px; --r-lg:18px; --r-pill:999px;
  --sh-xs:0 1px 2px rgba(16,23,42,.06);
  --sh-sm:0 1px 3px rgba(16,23,42,.07), 0 1px 2px rgba(16,23,42,.04);
  --sh:0 4px 14px rgba(16,23,42,.07), 0 2px 4px rgba(16,23,42,.04);
  --sh-lg:0 18px 44px rgba(16,23,42,.12), 0 6px 14px rgba(16,23,42,.06);
  --maxw:1120px; --ease:cubic-bezier(.4,0,.2,1);
  --font:"Inter","Noto Sans JP",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
*::selection{background:var(--brand-soft-2); color:var(--brand-ink);}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
html,body{margin:0;padding:0;overflow-x:hidden;max-width:100%;}
body{
  font-family:var(--font); background:var(--bg); color:var(--text);
  line-height:1.7; font-size:15.5px; letter-spacing:.005em;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{color:var(--ink); line-height:1.25; margin:0 0 .55em; font-weight:700; letter-spacing:-.012em;}
h1{font-size:clamp(1.7rem,2.4vw,2.15rem);} h2{font-size:1.5rem; margin-top:.2em;} h3{font-size:1.2rem;} h4{font-size:1.02rem;}
p{margin:0 0 1em;} small{color:var(--muted);}
a{color:var(--brand); text-decoration:none; transition:color .15s var(--ease);}
a:hover{color:var(--brand-hover); text-decoration:underline; text-underline-offset:2px;}
img{max-width:100%; height:auto; display:block;}
hr{border:0; border-top:1px solid var(--line); margin:24px 0;}
code{background:var(--surface-3); padding:.12em .4em; border-radius:var(--r-xs); font-size:.88em; font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,monospace;}
:focus-visible{outline:2px solid var(--brand); outline-offset:2px; border-radius:4px;}
::-webkit-scrollbar{width:11px; height:11px;}
::-webkit-scrollbar-thumb{background:#cfd6e6; border-radius:8px; border:3px solid var(--bg);}
::-webkit-scrollbar-thumb:hover{background:#b9c2d8;}
.container{max-width:var(--maxw); margin:0 auto; padding:28px 22px;}
/* 取りこぼし対策: ラッパークラスを付け忘れても整って見えるように */
main{display:block;}
main:not(.container){max-width:var(--maxw); margin:0 auto; padding:28px 22px;}
section:not(.hero){margin:18px 0;}

/* ナビゲーション */
.navbar{background:rgba(255,255,255,.86); backdrop-filter:saturate(1.6) blur(10px);
  border-bottom:1px solid var(--line); position:sticky; top:0; z-index:50;}
.navbar .nav-inner{max-width:var(--maxw); margin:0 auto; padding:14px 22px;
  display:flex; align-items:center; justify-content:space-between; gap:18px;}
.nav-brand{font-weight:800; font-size:1.12rem; color:var(--ink); letter-spacing:-.02em;
  display:flex; align-items:center; gap:9px;}
.nav-brand:hover{text-decoration:none; color:var(--ink);}
.nav-links{display:flex; align-items:center; gap:6px; flex-wrap:wrap;}
.nav-links a{color:var(--muted); font-weight:600; font-size:.9rem; padding:7px 12px; border-radius:var(--r-sm);
  transition:background .15s var(--ease),color .15s var(--ease);}
.nav-links a:hover{color:var(--brand-ink); background:var(--brand-soft); text-decoration:none;}
/* ハンバーガーボタン(スマホ時のみ表示。PCでは非表示) */
.nav-toggle{display:none; flex-direction:column; justify-content:center; gap:5px;
  width:42px; height:38px; padding:8px 9px; background:transparent; border:1px solid var(--line-strong);
  border-radius:var(--r-sm); cursor:pointer; box-shadow:none;}
.nav-toggle:hover{background:var(--surface-3); transform:none;}
.nav-toggle span{display:block; width:100%; height:2px; background:var(--ink); border-radius:2px; transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ヒーロー(画面いっぱいのフルブリード) */
.hero{position:relative; overflow:hidden; color:#fff; border-radius:0;
  width:auto; max-width:none; margin-left:calc(50% - 50vw); margin-right:calc(50% - 50vw);
  margin-top:0; margin-bottom:36px;
  padding:clamp(56px,9vw,132px) clamp(20px,6vw,48px);
  min-height:clamp(340px,52vh,620px);
  display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center;
  box-shadow:none; background-color:var(--brand-press); background-size:cover; background-position:center;
  background-image:linear-gradient(180deg, rgba(12,18,42,.50), rgba(12,18,42,.66)),
    var(--hero-bg, radial-gradient(120% 140% at 0% 0%, #4c6ef5 0%, var(--brand) 45%, var(--brand-press) 100%));}
.hero > *{position:relative; z-index:1; max-width:var(--maxw); width:100%; margin-left:auto; margin-right:auto;}
.hero::after{content:""; position:absolute; inset:0; z-index:0;
  background:radial-gradient(70% 90% at 50% 0%, rgba(255,255,255,.16), transparent 62%); pointer-events:none;}
.hero h1{color:#fff; font-size:clamp(2.1rem,4.6vw,3.4rem); line-height:1.12; margin-bottom:.4em; letter-spacing:-.025em; text-shadow:0 2px 18px rgba(0,0,0,.28);}
.hero p{color:rgba(255,255,255,.96); font-size:clamp(1.02rem,1.6vw,1.28rem); line-height:1.85; max-width:64ch; margin:0 auto; text-shadow:0 1px 10px rgba(0,0,0,.22);}
.hero .btn{margin-top:26px;}

/* カード・グリッド */
.card{background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:24px; box-shadow:var(--sh-sm); margin-bottom:22px; transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);}
a.card,.card-link{display:block; color:inherit;}
a.card:hover,.card-link:hover{text-decoration:none; box-shadow:var(--sh); transform:translateY(-2px); border-color:var(--line-strong);}
.card-title{font-size:1.08rem; font-weight:700; color:var(--ink); margin-bottom:.7em; letter-spacing:-.01em;}
.grid{display:grid; gap:22px;}
.grid.cols-2{grid-template-columns:repeat(2,1fr);}
.grid.cols-3{grid-template-columns:repeat(3,1fr);}
.grid.cols-4{grid-template-columns:repeat(4,1fr);}

/* ボタン */
.btn,button{display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:11px 19px; background:var(--brand); color:#fff; border:1px solid transparent;
  border-radius:var(--r-sm); cursor:pointer; font:inherit; font-weight:650; line-height:1.1;
  text-decoration:none; letter-spacing:.01em; box-shadow:var(--sh-xs);
  transition:background .15s var(--ease),box-shadow .15s var(--ease),transform .06s var(--ease);}
.btn:hover,button:hover{background:var(--brand-hover); color:#fff; text-decoration:none; box-shadow:var(--sh-sm); transform:translateY(-1px);}
.btn:active,button:active{background:var(--brand-press); transform:translateY(0);}
.btn:disabled,button:disabled{opacity:.55; cursor:not-allowed; transform:none; box-shadow:none;}
.btn-secondary{background:var(--brand-soft); color:var(--brand-ink); border-color:var(--brand-soft-2);}
.btn-secondary:hover{background:var(--brand-soft-2); color:var(--brand-ink);}
.btn-ghost{background:var(--surface); color:var(--text); border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--surface-3); color:var(--ink);}
.btn-danger{background:var(--err);} .btn-danger:hover{background:#a11616;}
.btn-success{background:var(--ok);} .btn-success:hover{background:#11652f;}
.btn-sm{padding:7px 13px; font-size:.85rem; border-radius:var(--r-xs);}
.btn-lg{padding:14px 26px; font-size:1.05rem;}
.btn-block{display:flex; width:100%;}

/* フォーム */
.form-group{margin-bottom:17px;}
label{display:block; font-weight:600; color:var(--ink); margin-bottom:7px; font-size:.9rem;}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=tel],
input[type=date],input[type=search],input[type=url],input[type=time],select,textarea{
  width:100%; padding:11px 13px; border:1px solid var(--line-strong); border-radius:var(--r-sm);
  font:inherit; color:var(--ink); background:var(--surface); transition:border-color .15s var(--ease),box-shadow .15s var(--ease);}
input::placeholder,textarea::placeholder{color:var(--faint);}
input:hover,select:hover,textarea:hover{border-color:#b6bed2;}
input:focus,select:focus,textarea:focus{outline:none; border-color:var(--brand); box-shadow:0 0 0 3.5px var(--brand-soft);}
input:disabled,select:disabled,textarea:disabled{background:var(--surface-3); color:var(--muted);}
textarea{min-height:118px; resize:vertical;}
.form-hint{font-size:.82rem; color:var(--muted); margin-top:5px;}

/* 認証ページ */
.auth-wrap{min-height:calc(100vh - 64px); display:flex; align-items:center; justify-content:center; padding:34px 16px;
  background:radial-gradient(80% 60% at 50% -10%, var(--brand-soft), transparent 70%);}
.auth-card{background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg);
  box-shadow:var(--sh-lg); padding:38px 34px; width:100%; max-width:430px;}
.auth-card h1{text-align:center; font-size:1.55rem; margin-bottom:1.1em;}
.auth-card .btn{width:100%; margin-top:4px;}
.auth-alt{text-align:center; margin-top:20px; font-size:.9rem; color:var(--muted);}

/* テーブル */
.table-wrap{overflow-x:auto; border-radius:var(--r); box-shadow:var(--sh-sm); border:1px solid var(--line);}
.table,table{width:100%; border-collapse:collapse; background:var(--surface); overflow:hidden;}
.table th,.table td,th,td{padding:13px 15px; text-align:left; border-bottom:1px solid var(--line); font-size:.93rem;}
.table th,th{background:var(--surface-3); font-weight:700; color:var(--ink); font-size:.82rem;
  text-transform:uppercase; letter-spacing:.04em;}
.table tbody tr,tbody tr{transition:background .12s var(--ease);}
.table tbody tr:hover,tbody tr:hover{background:var(--surface-2);}
.table tr:last-child td,tr:last-child td{border-bottom:0;}

/* アラート・バッジ */
.alert{padding:13px 16px 13px 16px; border-radius:var(--r-sm); margin:14px 0; border:1px solid transparent;
  border-left-width:4px; font-size:.92rem;}
.alert.success{background:var(--ok-bg); color:var(--ok); border-color:var(--ok-line); border-left-color:var(--ok);}
.alert.error{background:var(--err-bg); color:var(--err); border-color:var(--err-line); border-left-color:var(--err);}
.alert.warning{background:var(--warn-bg); color:var(--warn); border-color:var(--warn-line); border-left-color:var(--warn);}
.alert.info{background:var(--info-bg); color:var(--info); border-color:var(--info-line); border-left-color:var(--info);}
.badge{display:inline-flex; align-items:center; gap:5px; padding:3px 11px; border-radius:var(--r-pill);
  font-size:.76rem; font-weight:700; background:var(--brand-soft); color:var(--brand-ink); letter-spacing:.01em;}
.badge.ok{background:var(--ok-bg); color:var(--ok);} .badge.warn{background:var(--warn-bg); color:var(--warn);}
.badge.err{background:var(--err-bg); color:var(--err);}

/* ダッシュボード */
.stat-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(190px,1fr)); gap:18px; margin-bottom:8px;}
.stat-card{background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:22px; box-shadow:var(--sh-sm); position:relative; overflow:hidden;}
.stat-card::before{content:""; position:absolute; left:0; top:0; bottom:0; width:4px; background:var(--brand); opacity:.9;}
.stat-card .stat-label{color:var(--muted); font-size:.85rem; font-weight:600;}
.stat-card .stat-value{font-size:2rem; font-weight:800; color:var(--ink); margin-top:5px; letter-spacing:-.02em;}

/* 空状態・フッター・ユーティリティ */
.empty-state{text-align:center; color:var(--muted); padding:48px 20px;}
.site-footer{text-align:center; color:var(--muted); font-size:.85rem; padding:30px 16px; border-top:1px solid var(--line); margin-top:36px;}
.text-center{text-align:center;} .text-muted{color:var(--muted);} .text-right{text-align:right;}
.mt-0{margin-top:0;} .mb-0{margin-bottom:0;} .mt-1{margin-top:8px;} .mb-1{margin-bottom:8px;}
.mt-2{margin-top:18px;} .mb-2{margin-bottom:18px;} .mt-3{margin-top:28px;}
.flex{display:flex; gap:12px; align-items:center;} .flex-between{justify-content:space-between;}
.flex-wrap{flex-wrap:wrap;} .gap-sm{gap:8px;}

/* ===== レイアウトパターン集(v3)— トップページや特集を多彩に組むための共通部品 ===== */
/* 小さなオーバーラインラベル(セクション見出しの上に置く) */
.eyebrow{display:inline-block; font-size:.78rem; font-weight:800; letter-spacing:.14em; text-transform:uppercase;
  color:var(--brand); margin-bottom:8px;}
.lead{font-size:1.08rem; line-height:1.9; color:var(--text); max-width:70ch;}

/* 全幅バンド(淡色/濃色)。重要メッセージ・特徴を帯で強調 */
/* 注意: left:50%+負マージン方式はAI CSSの margin 上書きで右ズレ事故を起こすため使用禁止。
   margin計算のみの方式なら、上書きされても「親幅の帯」に安全に退化する */
.section-band{width:auto; margin:44px calc(50% - 50vw); padding:clamp(36px,6vw,72px) clamp(20px,6vw,48px);
  background:var(--brand-soft);}
.section-band > .band-inner, .section-band > .container{max-width:var(--maxw); margin:0 auto; padding:0;}
.section-band.dark{background:var(--brand-press); color:rgba(255,255,255,.92);}
.section-band.dark h1,.section-band.dark h2,.section-band.dark h3{color:#fff;}
.section-band.dark .eyebrow{color:rgba(255,255,255,.75);}
.section-band.dark .card{background:rgba(255,255,255,.08); border-color:rgba(255,255,255,.16); color:rgba(255,255,255,.92); box-shadow:none;}
.section-band.dark .card-title{color:#fff;}

/* 画像×テキストの左右分割(交互に .reverse でジグザグ) */
.split{display:grid; grid-template-columns:1fr 1fr; gap:36px; align-items:center; margin:40px 0;}
.split.reverse > .split-media{order:2;}
.split .split-media img{width:100%; border-radius:var(--r-lg); box-shadow:var(--sh);}
.split .split-media .media-ph{aspect-ratio:4/3; border-radius:var(--r-lg);
  background:linear-gradient(135deg,var(--brand-soft),var(--brand-soft-2)); display:flex; align-items:center; justify-content:center;
  color:var(--brand-ink); font-size:2.2rem;}

/* 横スクロール(スナップ)カード列 */
.hscroll{display:flex; gap:18px; overflow-x:auto; padding:6px 4px 18px; scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;}
.hscroll > *{flex:0 0 min(280px,78vw); scroll-snap-align:start; margin-bottom:0;}
.hscroll::-webkit-scrollbar{height:8px;}

/* 大きな番号付き特徴(01/02/03…) */
.feature-num{display:grid; grid-template-columns:repeat(3,1fr); gap:26px; counter-reset:featnum; margin:28px 0;}
.feature-num > div{counter-increment:featnum; position:relative; padding-top:14px;}
.feature-num > div::before{content:counter(featnum,decimal-leading-zero); display:block;
  font-size:2.4rem; font-weight:800; line-height:1; letter-spacing:-.02em; color:var(--brand-soft-2); margin-bottom:10px;}
.feature-num h3{margin-bottom:.4em;}

/* 利用の流れ(ステップ) */
.steps{display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:16px; counter-reset:stepnum; margin:28px 0;}
.steps > div{counter-increment:stepnum; background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:20px 18px; position:relative;}
.steps > div::before{content:counter(stepnum); display:flex; align-items:center; justify-content:center; position:static;
  width:30px; height:30px; border-radius:50%; background:var(--brand); color:#fff; font-weight:800; font-size:.9rem; margin-bottom:10px;}
.steps > div:not(:last-child)::after{content:"→"; position:absolute; right:-14px; top:50%; transform:translateY(-50%);
  color:var(--faint); font-weight:700; z-index:1;}

/* 実績・数値の帯 */
.kpi-strip{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:18px; text-align:center;
  padding:26px 18px; background:var(--surface); border:1px solid var(--line); border-radius:var(--r-lg); margin:34px 0;}
.kpi-strip .kpi-value{font-size:clamp(1.8rem,3.4vw,2.6rem); font-weight:800; color:var(--brand); letter-spacing:-.02em; line-height:1.1;}
.kpi-strip .kpi-label{color:var(--muted); font-size:.88rem; font-weight:600; margin-top:6px;}

/* よくある質問(開閉式) */
.faq-item{background:var(--surface); border:1px solid var(--line); border-radius:var(--r); margin-bottom:12px; overflow:hidden;}
.faq-item summary{cursor:pointer; list-style:none; padding:16px 20px; font-weight:700; color:var(--ink);
  display:flex; justify-content:space-between; align-items:center; gap:12px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"+"; font-size:1.3rem; color:var(--brand); font-weight:700; transition:transform .18s var(--ease);}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-body{padding:0 20px 18px; color:var(--text);}

/* お客様の声・引用 */
.quote{background:var(--surface); border:1px solid var(--line); border-left:4px solid var(--accent, var(--brand));
  border-radius:var(--r); padding:22px 24px; margin:18px 0; box-shadow:var(--sh-sm);}
.quote p{font-style:normal; margin-bottom:.6em;}
.quote .quote-by{color:var(--muted); font-size:.86rem; font-weight:600;}

/* 行動喚起の帯(登録・予約・問い合わせ) */
.cta-band{width:auto; margin:48px calc(50% - 50vw) 0;
  padding:clamp(40px,6vw,72px) clamp(20px,6vw,48px); text-align:center;
  background:linear-gradient(120deg,var(--brand),var(--brand-press)); color:#fff;}
.cta-band > *{max-width:min(var(--maxw),60ch); margin-left:auto; margin-right:auto;}
.cta-band h2{color:#fff; margin-bottom:.4em;}
.cta-band p{color:rgba(255,255,255,.92); max-width:60ch; margin:0 auto 1.2em;}
.cta-band .btn{background:#fff; color:var(--brand-ink); font-weight:800;}
.cta-band .btn:hover{background:rgba(255,255,255,.9); color:var(--brand-ink);}

/* 画像トップのカード */
.card > .card-img, .card > a > .card-img{width:calc(100% + 48px); margin:-24px -24px 16px; border-radius:var(--r) var(--r) 0 0;
  aspect-ratio:16/9; object-fit:cover;}

@media (max-width:820px){
  .split{grid-template-columns:1fr;}
  .split.reverse > .split-media{order:0;}
  .feature-num{grid-template-columns:1fr;}
  .steps > div:not(:last-child)::after{content:"";}
}

@media (max-width:820px){
  .grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr;}
  .nav-inner{flex-wrap:wrap; gap:10px;}
  .container{padding:22px 16px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important; transition:none !important; scroll-behavior:auto !important;}
}

/* ===== AIB-THEME v2 (project #83 / dir:auto / layout:poster / nav:standard / card:border / deco:bar) ===== */
:root{
  --brand:#6741d9; --brand-hover:#5c3ac3; --brand-press:#5234ad;
  --brand-soft:#e9e4f9; --brand-soft-2:#dad1f5; --brand-ink:#382377;
  --accent:#f08c00; --accent-ink:#905400;
  --bg:#f8f7fc; --surface:#ffffff; --surface-2:#fbfbfb; --surface-3:#f7f7f7;
  --line:#e7e3f2; --line-strong:#d4d0de;
  --ink:#1c1633; --text:#3c3556; --muted:#6f6790; --faint:#938dab;
  --r-xs:7px; --r-sm:10px; --r:14px; --r-lg:20px;
  --sh-xs:0 1px 2px rgba(16,23,42,.10); --sh-sm:0 1px 3px rgba(16,23,42,.10); --sh:0 6px 18px rgba(16,23,42,.10); --sh-lg:0 22px 50px rgba(16,23,42,.14);
  --font:"Noto Sans JP","Hiragino Sans","Yu Gothic UI",system-ui,-apple-system,"Segoe UI",sans-serif;
}
h1,h2,h3,h4,h5{font-family:"Hiragino Mincho ProN","Yu Mincho","YuMincho","Noto Serif JP",serif; letter-spacing:-.015em;}
*::selection{background:#dad1f5; color:#382377;}
.badge,.tag,.chip{background:rgba(240,140,0,0.120); color:var(--accent-ink); border-color:rgba(240,140,0,0.350);}
.btn-accent{background:var(--accent); color:#fff;}
.eyebrow{color:var(--accent-ink);}
.hero{background:radial-gradient(1200px 400px at 10% -10%,rgba(240,140,0,0.550),transparent 60%),radial-gradient(900px 380px at 100% 0%,rgba(103,65,217,0.600),transparent 55%),#e9e4f9;}
/* card: border(フラット・枠線) */
.card,.stat-card{box-shadow:none; border:1.5px solid var(--line-strong);}
a.card:hover,.card-link:hover{box-shadow:none; border-color:var(--brand); transform:none;}
/* deco: bar */
.container h2, main h2{padding-left:.6em; border-left:4px solid var(--brand);}


/* ===== project-specific styles (AI generated) ===== */
:root{
  --brand:#6c2bd9;
  --brand-dark:#4a1a9a;
  --accent:#ff5da2;
  --accent-2:#00d1c1;
  --ink:#241a3a;
  --muted:#6b6280;
  --surface:#ffffff;
  --bg:#f5f1fb;
  --line:#e5ddf2;
  --r:14px;
  --r-sm:9px;
  --r-lg:22px;
  --sh:0 8px 26px rgba(76,26,154,.10);
  --sh-lg:0 18px 50px rgba(76,26,154,.20);
  --ok:#12b76a;
  --warn:#f79009;
  --err:#f04438;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Hiragino Kaku Gothic ProN","Yu Gothic UI","Segoe UI",system-ui,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(255,93,162,.10), transparent 40%),
    radial-gradient(circle at 88% 4%, rgba(0,209,193,.10), transparent 38%),
    var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em}

.container{max-width:1080px;margin:0 auto;padding:34px 20px 60px}

/* ---------- NAVBAR ---------- */
.navbar{
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(10px);
  border-bottom:2px solid var(--line);
  position:sticky;top:0;z-index:50;
}
.nav-inner{
  max-width:1080px;margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.nav-brand{
  font-weight:900;font-size:1.28rem;letter-spacing:.5px;
  color:var(--brand);display:flex;align-items:center;gap:8px;
}
.nav-brand::before{content:"🃏";font-size:1.3rem}
.nav-brand:hover{text-decoration:none}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.nav-links a{
  color:var(--ink);font-weight:700;font-size:.95rem;
  padding:8px 14px;border-radius:999px;transition:.15s;
}
.nav-links a:hover{background:var(--brand);color:#fff;text-decoration:none}

/* ---------- HERO ---------- */
.hero{
  position:relative;
  min-height:72vh;
  display:flex;flex-direction:column;justify-content:center;align-items:center;
  text-align:center;padding:70px 22px;
  color:#fff;
  background:linear-gradient(135deg,rgba(76,26,154,.82),rgba(255,93,162,.66)),
             var(--hero-image,linear-gradient(135deg,#6c2bd9,#ff5da2));
  background-size:cover;background-position:center;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 120%, rgba(0,209,193,.35), transparent 55%);
  pointer-events:none;
}
.hero h1{
  font-size:clamp(2.3rem,6vw,4.2rem);font-weight:900;
  text-shadow:0 4px 24px rgba(0,0,0,.35);margin-bottom:.3em;position:relative;
}
.hero p{
  font-size:clamp(1.05rem,2.4vw,1.4rem);max-width:640px;
  text-shadow:0 2px 12px rgba(0,0,0,.3);margin:0 auto 1.6em;position:relative;
}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:#fff;font-weight:800;
  padding:12px 24px;border-radius:999px;border:none;cursor:pointer;
  font-size:1rem;transition:.18s;box-shadow:var(--sh);text-decoration:none;
}
.btn:hover{background:var(--brand-dark);transform:translateY(-2px);text-decoration:none;color:#fff}
.btn-secondary{background:var(--accent);color:#fff}
.btn-secondary:hover{background:#e83f8c;color:#fff}
.btn-ghost{background:transparent;color:var(--brand);border:2px solid var(--brand);box-shadow:none}
.btn-ghost:hover{background:var(--brand);color:#fff}
.btn-danger{background:var(--err)}
.btn-danger:hover{background:#c9372c}
.btn-success{background:var(--ok)}
.btn-success:hover{background:#0e945a}
.btn-lg{padding:16px 38px;font-size:1.2rem;border-radius:999px}
.btn-sm{padding:7px 15px;font-size:.85rem}
.btn-block{width:100%}

/* ---------- SECTIONS / EYEBROW ---------- */
.eyebrow{
  display:inline-block;text-transform:uppercase;letter-spacing:2px;
  font-size:.78rem;font-weight:900;color:var(--accent);
  background:rgba(255,93,162,.1);padding:4px 12px;border-radius:999px;margin-bottom:10px;
}
section.block{margin:56px 0}
.lead{font-size:1.1rem;color:var(--muted);max-width:680px;margin:0 0 8px}
h2{font-size:clamp(1.6rem,3.5vw,2.3rem);font-weight:900}

/* ---------- CARDS ---------- */
.card{
  background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);
  padding:22px;transition:.18s;
}
.card:hover{border-color:var(--brand);transform:translateY(-3px)}
.card-title{font-weight:900;font-size:1.15rem;margin-bottom:8px;color:var(--brand)}
.card-img{width:100%;height:180px;object-fit:cover;border-radius:var(--r-sm);margin-bottom:14px}

.grid{display:grid;gap:20px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:820px){
  .grid.cols-2,.grid.cols-3,.grid.cols-4{grid-template-columns:1fr}
}

/* ---------- KPI STRIP ---------- */
.kpi-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-lg);
}
.kpi-strip>div{padding:28px 16px;text-align:center;color:#fff;border-right:1px solid rgba(255,255,255,.15)}
.kpi-strip>div:last-child{border-right:none}
.kpi-value{font-size:2.4rem;font-weight:900;color:#fff}
.kpi-label{font-size:.9rem;opacity:.9}
@media(max-width:820px){.kpi-strip{grid-template-columns:repeat(2,1fr)}}

/* ---------- STEPS ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:st}
.steps>div{
  background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);
  padding:26px 18px 20px;position:relative;counter-increment:st;
}
.steps>div::before{
  content:counter(st);position:absolute;top:-16px;left:20px;
  width:36px;height:36px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:900;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh);
}
.steps h4{margin:6px 0 6px;color:var(--brand)}
.steps>div:not(:last-child)::after{
  content:"→";position:absolute;right:-14px;top:50%;transform:translateY(-50%);
  color:var(--accent);font-weight:900;font-size:1.3rem;
}
@media(max-width:820px){
  .steps{grid-template-columns:1fr}
  .steps>div:not(:last-child)::after{content:"↓";right:50%;top:auto;bottom:-20px;transform:translateX(50%)}
}

/* ---------- FEATURE NUM ---------- */
.feature-num{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:fn}
.feature-num>div{position:relative;padding-top:14px;counter-increment:fn}
.feature-num>div::before{
  content:"0" counter(fn);font-size:2.6rem;font-weight:900;color:var(--accent);opacity:.35;display:block;
}
.feature-num h3{color:var(--brand);margin:.2em 0}
@media(max-width:820px){.feature-num{grid-template-columns:1fr}}

/* ---------- SPLIT ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;margin:40px 0}
.split.reverse .split-media{order:2}
.split-media img{border-radius:var(--r-lg);box-shadow:var(--sh-lg);width:100%;height:100%;object-fit:cover}
@media(max-width:820px){.split{grid-template-columns:1fr}.split.reverse .split-media{order:0}}

/* ---------- BANDS ---------- */
.section-band{background:var(--surface);border-top:2px solid var(--line);border-bottom:2px solid var(--line);padding:52px 0}
.section-band.dark{background:linear-gradient(135deg,var(--brand-dark),var(--brand));border:none;color:#fff}
.section-band.dark h2,.section-band.dark .lead{color:#fff}
.section-band.dark .lead{opacity:.9}
.band-inner{max-width:1080px;margin:0 auto;padding:0 20px}

.cta-band{
  background:linear-gradient(135deg,var(--accent),var(--brand));
  color:#fff;text-align:center;padding:60px 22px;border-radius:var(--r-lg);
  margin:56px 0;box-shadow:var(--sh-lg);
}
.cta-band h2{color:#fff}
.cta-band p{max-width:560px;margin:0 auto 1.4em;opacity:.95}

/* ---------- HSCROLL ---------- */
.hscroll{display:flex;gap:18px;overflow-x:auto;padding:8px 2px 18px;scroll-snap-type:x mandatory}
.hscroll .card{min-width:260px;scroll-snap-align:start}

/* ---------- FAQ ---------- */
.faq-item{background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:16px 20px;font-weight:800;cursor:pointer;color:var(--brand);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"❓ ";}
.faq-body{padding:0 20px 18px;color:var(--muted)}

/* ---------- QUOTE ---------- */
.quote{background:var(--surface);border-left:5px solid var(--accent);border-radius:var(--r);padding:22px 24px;box-shadow:var(--sh)}
.quote-by{margin-top:10px;font-weight:800;color:var(--brand)}

/* ---------- TABLES ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--r);box-shadow:var(--sh)}
.table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--r);overflow:hidden}
.table th,.table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
.table th{background:var(--brand);color:#fff;font-weight:800;font-size:.92rem}
.table tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:rgba(108,43,217,.05)}
.rank-1{font-weight:900;color:var(--accent)}

/* ---------- FORMS ---------- */
.form-group{margin-bottom:18px}
.form-group label{display:block;font-weight:800;margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:var(--r-sm);
  font-size:1rem;font-family:inherit;background:#fff;color:var(--ink);transition:.15s;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(108,43,217,.15);
}
.form-hint{font-size:.85rem;color:var(--muted);margin-top:5px}

/* ---------- ALERTS / BADGES ---------- */
.alert{padding:14px 18px;border-radius:var(--r-sm);margin-bottom:18px;font-weight:600;border:1.5px solid}
.alert.success{background:#e7f8ef;color:#0e945a;border-color:#a7e6c6}
.alert.error{background:#fdecea;color:#c9372c;border-color:#f3b4ae}
.alert.warning{background:#fff5e6;color:#b5670a;border-color:#f6d199}
.alert.info{background:#eef2ff;color:#3949ab;border-color:#c5cef5}
.badge{display:inline-block;padding:3px 11px;border-radius:999px;font-size:.8rem;font-weight:800}
.badge.ok{background:#e7f8ef;color:#0e945a}
.badge.warn{background:#fff5e6;color:#b5670a}
.badge.err{background:#fdecea;color:#c9372c}

/* ---------- AUTH ---------- */
.auth-wrap{min-height:70vh;display:flex;align-items:center;justify-content:center;padding:30px 16px}
.auth-card{background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r-lg);padding:38px 32px;max-width:420px;width:100%;box-shadow:var(--sh-lg)}
.auth-card h1{color:var(--brand);text-align:center}

/* ---------- STAT GRID ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}
.stat-card{background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);padding:20px;text-align:center}
.stat-label{color:var(--muted);font-size:.9rem;font-weight:700}
.stat-value{font-size:2rem;font-weight:900;color:var(--brand)}

/* ---------- EMPTY ---------- */
.empty-state{text-align:center;padding:50px 20px;color:var(--muted)}
.empty-state::before{content:"🎴";font-size:3rem;display:block;margin-bottom:10px}

/* ---------- FOOTER ---------- */
.site-footer{
  background:var(--brand-dark);color:rgba(255,255,255,.85);
  text-align:center;padding:34px 20px;margin-top:60px;font-size:.9rem;
}
.site-footer a{color:#fff}

/* ================= GAME HUD ================= */
.game-shell{max-width:900px;margin:0 auto;padding:20px}
.hud{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:20px;
}
.hud-item{
  background:var(--surface);border:1.5px solid var(--line);border-radius:var(--r);
  padding:12px 20px;text-align:center;min-width:110px;box-shadow:var(--sh);
}
.hud-label{font-size:.78rem;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:1px}
.hud-value{font-size:1.7rem;font-weight:900;color:var(--brand);line-height:1.2}
.hud-item.turn-active{border-color:var(--accent);background:rgba(255,93,162,.08)}
.hud-item.turn-active .hud-value{color:var(--accent)}
.hud-item.time-low .hud-value{color:var(--err);animation:pulse .6s infinite alternate}
@keyframes pulse{from{transform:scale(1)}to{transform:scale(1.12)}}

/* ---------- BOARD ---------- */
.board{
  display:grid;gap:12px;justify-content:center;margin:0 auto;perspective:1000px;
}
.card-tile{
  aspect-ratio:3/4;cursor:pointer;
  background:transparent;border:none;padding:0;
  perspective:900px;
}
.card-inner{
  position:relative;width:100%;height:100%;
  transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,.2,.2,1);
  border-radius:var(--r-sm);
}
.card-tile.flipped .card-inner,
.card-tile.matched .card-inner{transform:rotateY(180deg)}
.card-face{
  position:absolute;inset:0;backface-visibility:hidden;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);font-size:2.2rem;box-shadow:var(--sh);
}
.card-front{
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;font-size:1.6rem;
}
.card-front::after{content:"?";font-weight:900}
.card-back{
  background:#fff;border:2px solid var(--brand);transform:rotateY(180deg);color:var(--ink);
}
.card-tile.matched .card-inner{animation:matchPop .5s;}
.card-tile.matched .card-back{border-color:var(--ok);background:#e7f8ef}
.card-tile.miss .card-back{background:#fdecea;border-color:var(--err);animation:shake .4s}
.card-tile.kb-focus .card-inner{outline:3px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm)}
@keyframes matchPop{0%{transform:rotateY(180deg) scale(1)}40%{transform:rotateY(180deg) scale(1.18)}100%{transform:rotateY(180deg) scale(1)}}
@keyframes shake{0%,100%{transform:rotateY(180deg) translateX(0)}25%{transform:rotateY(180deg) translateX(-6px)}75%{transform:rotateY(180deg) translateX(6px)}}

.result-hero{text-align:center;padding:30px 0}
.result-hero .big-emoji{font-size:4rem}
.result-hero h1{font-size:2.4rem;color:var(--brand)}
.confetti-win{animation:winbounce .8s}
@keyframes winbounce{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.15)}100%{transform:scale(1);opacity:1}}

.pill-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:16px 0}
.pill{background:var(--surface);border:1.5px solid var(--line);border-radius:999px;padding:8px 18px;font-weight:800}
.pill strong{color:var(--brand)}

.select-cards{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.opt-btn{
  background:var(--surface);border:2px solid var(--line);border-radius:var(--r);
  padding:16px 22px;cursor:pointer;font-weight:800;font-size:1rem;transition:.15s;min-width:130px;text-align:center;
}
.opt-btn:hover{border-color:var(--brand)}
.opt-btn.active{border-color:var(--brand);background:var(--brand);color:#fff}
.opt-btn small{display:block;font-weight:600;opacity:.8;font-size:.8rem;margin-top:4px}

@media(max-width:560px){
  .hud-value{font-size:1.4rem}
  .card-face{font-size:1.7rem}
}

/* ===== AIB-HARD-OVERRIDE v2 — AI生成CSSより後に置き、最終的なレイアウトを保証 ===== */
html,body{overflow-x:hidden !important;}

/* 帯パターンの右ズレ・文字切れ防止(AI CSSが margin/position を上書きしても崩れないよう強制) */
.section-band,.cta-band{position:static !important; left:auto !important; right:auto !important;
  width:auto !important; min-width:0 !important; max-width:none !important;
  margin-left:calc(50% - 50vw) !important; margin-right:calc(50% - 50vw) !important;
  box-sizing:border-box !important;}
/* カードや分割レイアウトの中に入れられた場合は全幅化せずパネルとして表示 */
.card .section-band,.split .section-band,.grid .section-band,.hero .section-band,
.card .cta-band,.split .cta-band,.grid .cta-band,.hero .cta-band{
  margin-left:0 !important; margin-right:0 !important; border-radius:14px !important;}

/* 長い単語・URLでの横はみ出し防止 / グリッド子要素の膨張防止 */
h1,h2,h3,h4,h5,h6,p,li,dd,dt,td,th{overflow-wrap:break-word;}
.grid > *,.split > *,.steps > *,.kpi-strip > *,.feature-num > *,.hscroll > *{min-width:0 !important;}

/* ヘッダー固定(常に画面上部) */
.navbar{position:sticky !important; top:0 !important; z-index:1000 !important;}
.nav-inner{position:relative;}

/* スマホ: ハンバーガーメニュー */
@media (max-width:820px){
  .nav-toggle{display:inline-flex !important;}
  .nav-inner{flex-wrap:nowrap !important; gap:10px !important;}
  .navbar .nav-links{
    display:none !important; position:absolute !important; top:100% !important; left:0 !important; right:0 !important;
    flex-direction:column !important; align-items:stretch !important; gap:0 !important;
    background:#fff !important; border-top:1px solid var(--line) !important; border-bottom:1px solid var(--line) !important;
    box-shadow:0 14px 30px rgba(16,23,42,.14) !important; padding:6px 0 !important; margin:0 !important;
  }
  .navbar .nav-links.open{ display:flex !important; }
  .navbar .nav-links a{ padding:13px 22px !important; border-radius:0 !important; font-size:1rem !important; width:100% !important; }
}
@media (min-width:821px){ .nav-toggle{display:none !important;} }
/* --- hero override (layout: poster) --- */
.hero, section.hero, .hero-section, .lp-hero, .hero-banner, section[class*="hero"], header[class*="hero"]{ position:relative !important; box-sizing:border-box !important; overflow:hidden !important; background-size:cover !important; background-position:center !important; background-repeat:no-repeat !important; }
.hero > *, section[class*="hero"] > *, .hero-section > *, .lp-hero > *{ position:relative !important; z-index:2 !important; float:none !important; }
.hero img, section[class*="hero"] img, .hero-section img, .lp-hero img{ display:none !important; }
.hero > div, section[class*="hero"] > div, .hero .container{ display:block !important; }
.hero, section.hero, .hero-section, .lp-hero, .hero-banner, section[class*="hero"], header[class*="hero"]{ width:auto !important; max-width:none !important; min-width:0 !important; left:auto !important; right:auto !important; margin-left:calc(50% - 50vw) !important; margin-right:calc(50% - 50vw) !important; margin-top:0 !important; border-radius:0 !important; box-sizing:border-box !important; display:flex !important; flex-direction:column !important; align-items:center !important; justify-content:center !important; text-align:center !important; min-height:clamp(480px,72vh,780px) !important; padding:clamp(64px,10vw,150px) clamp(20px,6vw,48px) !important; color:#fff !important; background-color:var(--brand-press) !important; background-image:var(--hero-bg, radial-gradient(120% 140% at 0% 0%, #8263df 0%, var(--brand) 45%, var(--brand-press) 100%)) !important; }
.hero::before, section[class*="hero"]::before, .hero-section::before, .lp-hero::before{ content:"" !important; position:absolute !important; inset:0 !important; z-index:1 !important; pointer-events:none !important; background:linear-gradient(180deg, rgba(8,12,30,.36) 0%, rgba(8,12,30,.48) 55%, rgba(8,12,30,.74) 100%) !important; }
.hero > *, section[class*="hero"] > *, .hero-section > *, .lp-hero > *{ width:100% !important; max-width:var(--maxw) !important; margin-left:auto !important; margin-right:auto !important; }
.hero h1, section[class*="hero"] h1{ font-size:clamp(2.5rem,6vw,4.4rem) !important; line-height:1.06 !important; letter-spacing:-.03em; text-shadow:0 3px 24px rgba(0,0,0,.35); }
.hero p, section[class*="hero"] p{ font-size:clamp(1.05rem,1.8vw,1.35rem) !important; max-width:60ch !important; margin-left:auto !important; margin-right:auto !important; }
.hero h1,.hero h2,.hero h3,.hero p,.hero span,.hero li,section[class*="hero"] h1, section[class*="hero"] h2, section[class*="hero"] h3, section[class*="hero"] p{ color:#fff !important; }
.hero .btn-secondary{ background:rgba(255,255,255,.16) !important; color:#fff !important; border-color:rgba(255,255,255,.5) !important; }


/* AIB-HERO-IMAGE v3 */
:root{ --hero-bg: url('../img/header.png'); }
.hero, .hero-section, .lp-hero, section[class*="hero"], header[class*="hero"]{
  background-image: var(--hero-bg) !important;
  background-size: cover !important; background-position: center !important; background-repeat:no-repeat !important;
}