/* 沖縄AIラボ — ラボノート・デザインシステム
   コンセプト: 実測を記す研究ノート。方眼紙×琉球藍×朱。 */
:root{
  --paper:#faf8f2;          /* 温かみのある紙白 */
  --paper-deep:#f2eee3;
  --ink:#1d2a38;            /* 墨に近い藍鼠 */
  --indigo:#274a78;         /* 琉球藍 */
  --indigo-deep:#16344e;
  --shu:#d9482b;            /* 朱 — CTA/下線専用 */
  --shu-soft:#f7ded6;
  --line:#d8d2c2;
  --grid:rgba(39,74,120,.055);
  --ok:#2e7d5b;
  --maxw:1080px;
  --font-display:"Shippori Mincho B1",serif;
  --font-body:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);color:var(--ink);background:var(--paper);
  line-height:1.9;font-size:16px;letter-spacing:.02em;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:28px 28px;
}
img{max-width:100%;display:block}
a{color:var(--indigo)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ===== ヘッダー ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,248,242,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:baseline;gap:8px;text-decoration:none;color:var(--ink)}
.brand .mark{font-family:var(--font-display);font-weight:700;font-size:1.25rem;letter-spacing:.06em}
.brand .mark .ai{color:var(--shu)}
.brand .tag{font-size:.68rem;color:#6b7686;letter-spacing:.08em}
.gnav{display:flex;gap:18px;font-size:.85rem}
.gnav a{text-decoration:none;color:var(--ink);padding:6px 2px;border-bottom:2px solid transparent}
.gnav a:hover{border-bottom-color:var(--shu)}
.gnav .nav-cta{background:var(--shu);color:#fff;padding:8px 16px;border-radius:4px;border:none;font-weight:700}
.gnav .nav-cta:hover{background:#c03d22;border:none}
@media(max-width:760px){.gnav{display:none}}

/* ===== セクション共通 ===== */
section{padding:72px 0}
@media(max-width:760px){section{padding:52px 0}}
.sec-label{display:flex;align-items:center;gap:12px;margin-bottom:14px;font-size:.78rem;letter-spacing:.22em;color:var(--indigo);font-weight:700}
.sec-label::before{content:"";width:34px;height:1px;background:var(--shu)}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.5}
h2{font-size:clamp(1.5rem,3.4vw,2.1rem);margin-bottom:26px;letter-spacing:.03em}
h3{font-size:1.12rem;margin-bottom:10px}
.u-shu{background:linear-gradient(transparent 68%,var(--shu-soft) 68%)}
.lead{max-width:680px;color:#3c4757}

/* ===== ヒーロー ===== */
.hero{padding:84px 0 66px;position:relative;overflow:hidden}
.hero h1{font-size:clamp(1.75rem,5vw,2.9rem);letter-spacing:.04em;margin-bottom:22px}
.hero h1 .accent{color:var(--indigo);display:inline-block;border-bottom:3px solid var(--shu);padding-bottom:2px}
.hero .lead{font-size:1.02rem;margin-bottom:34px}
.hero-note{position:absolute;right:-40px;top:30px;width:340px;opacity:.5;pointer-events:none;font-family:var(--font-display);color:var(--indigo);transform:rotate(4deg);font-size:.8rem;line-height:2.2}
@media(max-width:900px){.hero-note{display:none}}
@media(max-width:760px){.hero h1 br,.page-hero h1 br{display:none}}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.btn{display:inline-block;text-decoration:none;font-weight:700;border-radius:5px;padding:15px 30px;font-size:1rem;transition:transform .15s,box-shadow .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--shu);color:#fff;box-shadow:0 3px 0 #a53219}
.btn-primary:hover{background:#c03d22}
.btn-ghost{border:1.5px solid var(--indigo);color:var(--indigo);background:transparent}
.btn-ghost:hover{background:var(--indigo);color:#fff}
.cta-sub{font-size:.78rem;color:#6b7686;width:100%}

/* ===== 詰まり方カード ===== */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:760px){.pain-grid{grid-template-columns:1fr}}
.pain{background:#fff;border:1px solid var(--line);border-radius:8px;padding:26px 22px;position:relative}
.pain::before{content:attr(data-n);position:absolute;top:-14px;left:18px;font-family:var(--font-display);color:var(--shu);background:var(--paper);padding:0 8px;font-size:1.05rem;font-weight:700}
.pain p{font-size:.92rem;color:#3c4757}

/* ===== 業種カード ===== */
.industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:760px){.industry-grid{grid-template-columns:1fr}}
.industry{background:var(--indigo);color:#fff;border-radius:8px;padding:28px 24px;text-decoration:none;position:relative;overflow:hidden;transition:transform .18s}
.industry:hover{transform:translateY(-3px)}
.industry::after{content:"→";position:absolute;right:18px;bottom:14px;font-size:1.2rem;color:#fff}
.industry h3{color:#fff;font-size:1.2rem}
.industry .en{font-size:.66rem;letter-spacing:.24em;opacity:.65;display:block;margin-bottom:8px}
.industry p{font-size:.85rem;opacity:.92;line-height:1.8}
.industry.alt{background:var(--indigo-deep)}

/* ===== デモ ===== */
.demo-block{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:10px;padding:34px;margin-bottom:22px}
@media(max-width:820px){.demo-block{grid-template-columns:1fr;padding:24px 20px}}
.demo-shot{border:1px solid var(--line);border-radius:6px;box-shadow:0 12px 28px rgba(29,42,56,.12);overflow:hidden;background:#fff}
.demo-meta dt{font-size:.72rem;color:var(--indigo);letter-spacing:.14em;font-weight:700;margin-top:14px}
.demo-meta dd{font-size:.92rem}
.demo-links{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}

/* ===== 進め方 ===== */
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
@media(max-width:760px){.steps{grid-template-columns:1fr}}
.step{counter-increment:step;padding:24px 18px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);background:#fff}
@media(max-width:760px){.step{border-right:none}}
.step::before{content:"0" counter(step);font-family:var(--font-display);font-size:1.5rem;color:var(--shu);display:block;margin-bottom:6px}
.step h3{font-size:1rem}
.step p{font-size:.85rem;color:#3c4757}

/* ===== 料金 ===== */
.price-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);font-size:.95rem}
.price-table th,.price-table td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.price-table th{width:38%;font-family:var(--font-display);background:var(--paper-deep)}
.price-table .yen{font-family:var(--font-display);font-size:1.15rem;color:var(--indigo);white-space:nowrap}
.price-note{font-size:.8rem;color:#6b7686;margin-top:12px}
@media(max-width:600px){.price-table th,.price-table td{display:block;width:100%}.price-table th{border-bottom:none;padding-bottom:4px}}

/* ===== 記事リスト ===== */
.post-list{display:grid;gap:2px;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.post-item{display:block;text-decoration:none;color:var(--ink);padding:20px 24px;border-bottom:1px solid var(--line);background:#fff;transition:background .15s}
.post-item:last-child{border-bottom:none}
.post-item:hover{background:var(--paper-deep)}
.post-item .cat{font-size:.68rem;letter-spacing:.16em;color:var(--shu);font-weight:700}
.post-item h3{font-size:1rem;margin:4px 0 2px}
.post-item .date{font-size:.75rem;color:#6b7686}

/* ===== FAQ ===== */
details.faq{background:#fff;border:1px solid var(--line);border-radius:6px;margin-bottom:10px;padding:0 20px}
details.faq summary{cursor:pointer;font-weight:700;padding:16px 0;font-size:.95rem;list-style:none;position:relative;padding-right:28px}
details.faq summary::after{content:"+";position:absolute;right:2px;top:14px;color:var(--shu);font-size:1.2rem;font-family:var(--font-display)}
details.faq[open] summary::after{content:"−"}
details.faq p{padding:0 0 18px;font-size:.9rem;color:#3c4757}

/* ===== 最終CTA ===== */
.final-cta{background:var(--indigo-deep);color:#fff;text-align:center;border-radius:12px;padding:56px 24px;position:relative;overflow:hidden}
.final-cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:28px 28px}
.final-cta h2{color:#fff;position:relative}
.final-cta p{position:relative;opacity:.9;max-width:560px;margin:0 auto 28px;font-size:.95rem}
.final-cta .cta-row{justify-content:center;position:relative}
.final-cta .btn-ghost{border-color:#fff;color:#fff}
.final-cta .btn-ghost:hover{background:#fff;color:var(--indigo-deep)}

/* ===== フッター ===== */
.site-footer{border-top:1px solid var(--line);margin-top:80px;padding:44px 0 110px;font-size:.85rem;color:#3c4757;background:var(--paper-deep)}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
@media(max-width:700px){.site-footer .cols{grid-template-columns:1fr}}
.site-footer h4{font-family:var(--font-display);margin-bottom:10px;font-size:.95rem}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:6px}
.site-footer a{text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.copyright{margin-top:30px;font-size:.75rem;color:#6b7686}

/* ===== モバイル固定CTA ===== */
.sticky-cta{position:fixed;bottom:0;left:0;right:0;z-index:60;display:none;grid-template-columns:1fr 1fr;box-shadow:0 -4px 16px rgba(29,42,56,.14)}
.sticky-cta a{display:block;text-align:center;padding:15px 8px;font-weight:700;text-decoration:none;font-size:.95rem}
.sticky-cta .s1{background:var(--shu);color:#fff}
.sticky-cta .s2{background:#fff;color:var(--indigo);border-top:1px solid var(--line)}
@media(max-width:760px){.sticky-cta{display:grid}}

/* ===== 記事・下層 ===== */
.page-hero{padding:60px 0 30px}
.page-hero h1{font-size:clamp(1.5rem,4vw,2.2rem)}
.breadcrumb{font-size:.75rem;color:#6b7686;padding-top:18px}
.breadcrumb a{color:#6b7686}
.prose{max-width:720px}
.prose h2{margin-top:48px;padding-left:14px;border-left:4px solid var(--shu)}
.prose h3{margin-top:30px}
.prose p{margin-bottom:1.2em}
.prose ul,.prose ol{margin:0 0 1.2em 1.4em}
.prose li{margin-bottom:.4em}
.note-box{background:#fff;border:1px solid var(--line);border-left:4px solid var(--indigo);border-radius:6px;padding:18px 20px;margin:24px 0;font-size:.92rem}

/* ===== フォーム ===== */
.form-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:26px}
@media(max-width:600px){.form-tabs{grid-template-columns:1fr}}
.form-tab{border:1.5px solid var(--indigo);border-radius:6px;padding:14px 10px;text-align:center;font-weight:700;font-size:.88rem;cursor:pointer;background:#fff;color:var(--indigo)}
.form-tab.active{background:var(--indigo);color:#fff}
.form-tab small{display:block;font-weight:400;font-size:.7rem;margin-top:2px;opacity:.8}
form.contact label{display:block;font-weight:700;font-size:.88rem;margin:20px 0 6px}
form.contact label .req{color:var(--shu);font-size:.7rem;margin-left:6px}
form.contact input,form.contact select,form.contact textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;font-size:16px;font-family:var(--font-body);background:#fff}
form.contact textarea{min-height:110px}
form.contact button{margin-top:28px;width:100%;cursor:pointer;border:none}
.form-msg{margin-top:16px;padding:14px;border-radius:6px;font-size:.9rem;display:none}
.form-msg.ok{display:block;background:#e7f3ed;color:var(--ok)}
.form-msg.err{display:block;background:var(--shu-soft);color:#a53219}

/* ===== 相談方法モーダル ===== */
.consult-modal{position:fixed;inset:0;z-index:100;display:none}
.consult-modal.open{display:block}
.cm-backdrop{position:absolute;inset:0;background:rgba(22,32,44,.55);backdrop-filter:blur(2px)}
.cm-panel{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(440px,calc(100vw - 40px));background:var(--paper);border-radius:12px;padding:38px 28px 26px;box-shadow:0 24px 60px rgba(17,28,41,.35);text-align:center}
.cm-title{font-family:var(--font-display);font-weight:700;font-size:1.2rem;margin-bottom:22px}
.cm-close{position:absolute;top:10px;right:14px;background:none;border:none;font-size:1.6rem;color:#6b7686;cursor:pointer;line-height:1}
.cm-line,.cm-form{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:16px 12px;border-radius:8px;font-weight:700;font-size:1.02rem;text-decoration:none;margin-bottom:12px}
.cm-line{background:#06C755;color:#fff}
.cm-line:hover{background:#05b34c}
.cm-form{border:1.5px solid var(--indigo);color:var(--indigo);background:#fff}
.cm-form:hover{background:var(--indigo);color:#fff}
.cm-note{font-size:.78rem;color:#6b7686;margin-top:6px}

/* リビール */
@media(prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
  .reveal.on{opacity:1;transform:none}
}