/* ============================================================
   合同会社あおい — v2
   署名色: 澄んだ紺 × 夜明けの空。ダーク・シネマティックなヒーロー、
   巨大な明朝の見出しが写真に重なる、縦組みラベル、スクロール演出。
   ============================================================ */
:root{
  --ink:#0a1626;
  --ink-2:#38495f;
  --ink-3:#6b7c92;
  --paper:#f5f7f4;
  --paper-2:#eceff1;
  --blue:#1f5fa8;
  --blue-deep:#123f74;
  --blue-bright:#5b93d0;
  --hair:rgba(10,22,38,.13);
  --hair-light:rgba(255,255,255,.16);
  --wrap:1180px;
  --pad:clamp(1.4rem,5vw,4rem);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Noto Sans JP",system-ui,-apple-system,"Hiragino Kaku Gothic ProN",Meiryo,sans-serif;
  color:var(--ink);background:var(--paper);
  line-height:1.95;font-size:15.5px;letter-spacing:.02em;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--blue);color:#fff}

.mincho{font-family:"Zen Old Mincho","Shippori Mincho B1","Hiragino Mincho ProN",serif;font-weight:600}
.gothic{font-family:"Zen Kaku Gothic New","Noto Sans JP",sans-serif;font-weight:500}
.lat{font-family:"Zen Kaku Gothic New","Noto Sans JP",sans-serif;letter-spacing:.34em;text-transform:uppercase;font-size:.64rem;font-weight:600}

.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}

/* ---- scroll progress bar ---- */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--blue-bright);z-index:90;transition:width .1s linear}

/* ---- header ---- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:80;padding:22px var(--pad);display:flex;align-items:center;justify-content:space-between;
  transition:background .4s,padding .4s,border-color .4s;border-bottom:1px solid transparent}
.site-header.solid{background:rgba(245,247,244,.9);backdrop-filter:blur(10px);border-color:var(--hair);padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;transition:color .4s}
.site-header.solid .brand{color:var(--ink)}
.brand .mono{width:34px;height:34px;border:1.5px solid currentColor;border-radius:50%;display:grid;place-items:center;font-family:"Zen Old Mincho",serif;font-size:1rem;line-height:1;flex:none}
.brand .bt{display:flex;flex-direction:column;line-height:1.25}
.brand .bt b{font-size:.98rem;letter-spacing:.14em;font-weight:600}
.brand .bt span{font-size:.55rem;letter-spacing:.3em;opacity:.7}
.nav{display:flex;align-items:center;gap:26px;color:#fff;transition:color .4s}
.site-header.solid .nav{color:var(--ink)}
.nav a{font-size:.76rem;letter-spacing:.14em;position:relative;padding:4px 0}
.nav a:not(.nav-cta)::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:currentColor;transition:right .3s}
.nav a:not(.nav-cta):hover::after,.nav a[aria-current=page]:not(.nav-cta)::after{right:0}
.nav .nav-cta{border:1px solid currentColor;border-radius:999px;padding:8px 18px;font-size:.72rem}
.nav .nav-cta:hover{background:currentColor}
.nav .nav-cta:hover span{color:var(--paper)}
.site-header.solid .nav .nav-cta:hover span{color:var(--paper)}
.nav-toggle{display:none}

/* ---- hero ---- */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;background:var(--ink);color:#fff}
.hero-img{position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(.72) brightness(.92) hue-rotate(-12deg);animation:kb 22s ease-in-out infinite alternate}
@keyframes kb{from{transform:scale(1.06)}to{transform:scale(1.16)}}
.hero-grad{position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(10,22,38,.55) 0%,rgba(10,22,38,.12) 38%,rgba(10,22,38,.72) 100%),
  radial-gradient(120% 80% at 15% 100%,rgba(10,22,38,.6),transparent 60%)}
.hero-inner{position:relative;width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--pad) clamp(3.5rem,9vh,7rem)}
.hero .kicker{display:block;margin-bottom:1.6rem;color:var(--blue-bright)}
.hero h1{font-family:"Zen Old Mincho",serif;font-weight:600;font-size:clamp(2.5rem,7.4vw,6rem);line-height:1.22;letter-spacing:.04em;text-shadow:0 2px 30px rgba(0,0,0,.3)}
.hero .sub{margin-top:1.8rem;max-width:34rem;font-size:.98rem;color:rgba(255,255,255,.9);line-height:2}
.hero-actions{margin-top:2.6rem;display:flex;gap:14px;flex-wrap:wrap}

.hero-side{position:absolute;right:calc(var(--pad) - 6px);top:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;color:rgba(255,255,255,.75);z-index:2}
.hero-side .v{writing-mode:vertical-rl;letter-spacing:.4em;font-size:.6rem;text-transform:uppercase}
.hero-side .line{width:1px;height:70px;background:rgba(255,255,255,.4);position:relative;overflow:hidden}
.hero-side .line::after{content:"";position:absolute;top:-40%;left:0;width:100%;height:40%;background:#fff;animation:drop 2.2s ease-in-out infinite}
@keyframes drop{0%{top:-40%}60%,100%{top:100%}}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:.6em;font-size:.78rem;letter-spacing:.12em;padding:14px 30px;border:1px solid var(--blue);border-radius:999px;transition:background .25s,color .25s,border-color .25s}
.btn .ar{transition:transform .25s}
.btn:hover .ar{transform:translateX(4px)}
.btn-fill{background:var(--blue);color:#fff}
.btn-fill:hover{background:var(--blue-deep);border-color:var(--blue-deep)}
.btn-line{color:#fff;border-color:rgba(255,255,255,.55)}
.btn-line:hover{background:#fff;color:var(--ink)}
.btn-ink{border-color:var(--ink);color:var(--ink)}
.btn-ink:hover{background:var(--ink);color:var(--paper)}
.btn-ghost{border:0;padding:0;color:var(--blue-deep);letter-spacing:.1em}
.btn-ghost:hover{color:var(--ink)}

/* ---- section shell ---- */
.section{padding:clamp(5rem,13vw,10rem) 0;position:relative}
.section.paper-2{background:var(--paper-2)}
.section.ink{background:var(--ink);color:#fff}
.section.ink .lat{color:var(--blue-bright)}
.section.ink .lead{color:rgba(255,255,255,.82)}
.vlabel{writing-mode:vertical-rl;position:absolute;left:calc(var(--pad) - 8px);top:clamp(5rem,13vw,10rem);letter-spacing:.4em;font-size:.62rem;color:var(--ink-3);text-transform:uppercase}
.section.ink .vlabel{color:rgba(255,255,255,.5)}
.sec-head{margin-bottom:clamp(2.4rem,6vw,4.5rem)}
.sec-head .lat{display:block;margin-bottom:1rem;color:var(--blue)}
.sec-head h2{font-family:"Zen Old Mincho",serif;font-weight:600;font-size:clamp(1.7rem,4.4vw,3rem);line-height:1.4;letter-spacing:.05em}
.lead{max-width:40rem;color:var(--ink-2);font-size:1rem;line-height:2.1}

/* ---- concept ---- */
.concept{display:grid;grid-template-columns:1fr .92fr;gap:clamp(2rem,6vw,5rem);align-items:center}
.concept-fig{position:relative}
.concept-fig img{width:100%;aspect-ratio:3/4;object-fit:cover;filter:saturate(.8) brightness(.98)}
.concept-fig .cap{position:absolute;bottom:14px;left:-14px;background:var(--paper);padding:8px 14px;font-size:.62rem;letter-spacing:.24em;border:1px solid var(--hair)}
.concept-body .big{font-family:"Zen Old Mincho",serif;font-weight:600;font-size:clamp(1.5rem,3.6vw,2.4rem);line-height:1.7;letter-spacing:.05em;margin-bottom:1.6rem}
.concept-body p{color:var(--ink-2);margin-top:1rem}

/* ---- business ---- */
.biz-lead{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:stretch;margin-bottom:2.4rem}
.biz-lead .txt{align-self:center}
.biz-lead .num{font-family:"Zen Old Mincho",serif;font-size:clamp(3rem,7vw,5rem);line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--blue-bright);display:block;margin-bottom:.6rem}
.biz-lead .tag{display:inline-block;font-size:.62rem;letter-spacing:.2em;border:1px solid var(--blue);color:var(--blue-deep);border-radius:999px;padding:4px 14px;margin-bottom:1rem}
.biz-lead h3{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:clamp(1.2rem,2.6vw,1.6rem);margin-bottom:1rem;letter-spacing:.03em}
.biz-lead p{color:var(--ink-2)}
.biz-lead .fig img{width:100%;height:100%;min-height:320px;object-fit:cover;filter:saturate(.78)}
.biz-lead ul{margin-top:1.2rem;display:grid;gap:.5rem}
.biz-lead ul li{padding-left:1.1rem;position:relative;font-size:.9rem;color:var(--ink-2)}
.biz-lead ul li::before{content:"";position:absolute;left:0;top:.85em;width:6px;height:6px;background:var(--blue-bright);border-radius:50%}

.biz-sub{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hair);border:1px solid var(--hair)}
.biz-sub .c{background:var(--paper);padding:clamp(1.6rem,3.5vw,2.6rem)}
.biz-sub .c .n{font-family:"Zen Old Mincho",serif;color:var(--blue);font-size:1rem}
.biz-sub .c h3{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.06rem;margin:.6rem 0 .8rem}
.biz-sub .c p{font-size:.9rem;color:var(--ink-2)}
.disclaimer{margin-top:2rem;font-size:.8rem;color:var(--ink-3);max-width:44rem}

/* ---- approach ---- */
.steps{border-top:1px solid var(--hair)}
.section.ink .steps{border-color:var(--hair-light)}
.steps .step{display:grid;grid-template-columns:5rem 1fr;gap:clamp(1rem,3vw,2.4rem);padding:1.8rem 0;border-bottom:1px solid var(--hair);align-items:baseline}
.section.ink .steps .step{border-color:var(--hair-light)}
.steps .step .k{font-family:"Zen Old Mincho",serif;font-size:1rem;color:var(--blue-bright);letter-spacing:.1em}
.steps .step h4{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.05rem;margin-bottom:.4rem}
.steps .step p{font-size:.9rem;color:var(--ink-2)}
.section.ink .steps .step p{color:rgba(255,255,255,.75)}

/* ---- scope tags ---- */
.scope{display:flex;flex-wrap:wrap;gap:.7rem}
.scope span{border:1px solid var(--hair);border-radius:999px;padding:9px 18px;font-size:.82rem;color:var(--ink-2);background:var(--paper)}
.section.paper-2 .scope span{background:var(--paper)}

/* ---- faq ---- */
.faq{border-top:1px solid var(--hair);max-width:52rem}
.faq details{border-bottom:1px solid var(--hair);padding:1.3rem 0}
.faq summary{list-style:none;cursor:pointer;display:flex;gap:1rem;align-items:flex-start;font-family:"Zen Kaku Gothic New",sans-serif;font-weight:500;font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";font-family:"Zen Old Mincho",serif;color:var(--blue);flex:none}
.faq summary::after{content:"+";margin-left:auto;color:var(--ink-3);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:1rem 0 0 2rem;color:var(--ink-2);font-size:.92rem}

/* ---- company table ---- */
.table-info{width:100%;border-collapse:collapse;font-size:.94rem}
.table-info th,.table-info td{border-top:1px solid var(--hair);padding:1.2rem .3rem;text-align:left;vertical-align:top}
.section.ink .table-info th,.section.ink .table-info td{border-color:var(--hair-light)}
.table-info th{width:12rem;font-weight:600;color:var(--ink-3);letter-spacing:.08em;font-size:.82rem}
.section.ink .table-info th{color:rgba(255,255,255,.6)}
.table-info tr:last-child td,.table-info tr:last-child th{border-bottom:1px solid var(--hair)}
.section.ink .table-info tr:last-child td,.section.ink .table-info tr:last-child th{border-color:var(--hair-light)}

/* ---- CTA ---- */
.cta{background:var(--ink);color:#fff;text-align:center;padding:clamp(4.5rem,10vw,8rem) var(--pad)}
.cta .lat{color:var(--blue-bright)}
.cta h2{font-family:"Zen Old Mincho",serif;font-weight:600;font-size:clamp(1.6rem,4vw,2.6rem);margin:1rem 0 .8rem;letter-spacing:.06em}
.cta p{color:rgba(255,255,255,.75);margin-bottom:2.2rem}

/* ---- generic page hero (sub pages) ---- */
.page-hero{background:var(--ink);color:#fff;padding:clamp(8rem,16vw,11rem) var(--pad) clamp(3rem,7vw,5rem)}
.page-hero .wrap{padding:0}
.page-hero .lat{color:var(--blue-bright);display:block;margin-bottom:1rem}
.page-hero h1{font-family:"Zen Old Mincho",serif;font-weight:600;font-size:clamp(1.9rem,5vw,3.2rem);letter-spacing:.06em}

/* ---- prose ---- */
.prose{max-width:760px;margin:0 auto}
.prose h2{font-family:"Zen Kaku Gothic New",sans-serif;font-weight:700;font-size:1.15rem;margin:2.8rem 0 1rem;padding-bottom:.6rem;border-bottom:1px solid var(--hair)}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-2);font-size:.94rem}
.prose ul,.prose ol{margin:.6rem 0 .6rem 1.4rem}
.prose li{margin:.35rem 0}
.prose .stamp{font-size:.8rem;color:var(--ink-3);margin-top:2.4rem}

/* ---- contact ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;max-width:680px;margin:0 auto 2.6rem}
.contact-grid .card{border:1px solid var(--hair);padding:1.6rem}
.contact-grid .card .lat{display:block;margin-bottom:.5rem;color:var(--blue)}
.form{max-width:680px;margin:0 auto;display:grid;gap:1.2rem}
.form label{font-size:.78rem;letter-spacing:.1em;display:block;margin-bottom:.4rem;color:var(--ink-3)}
.form input,.form textarea{width:100%;border:1px solid var(--hair);padding:.85rem .95rem;font:inherit;background:var(--paper-2);border-radius:2px}
.form input:focus,.form textarea:focus{outline:2px solid var(--blue);border-color:var(--blue)}
.form .note{font-size:.83rem;color:var(--ink-2);background:var(--paper-2);border:1px solid var(--hair);padding:1.1rem}

/* ---- footer ---- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(4rem,9vw,6rem) var(--pad) 2.4rem}
.footer-top{max-width:var(--wrap);margin:0 auto;display:flex;justify-content:space-between;gap:3rem;flex-wrap:wrap}
.footer-brand .mono{width:38px;height:38px;border:1.5px solid rgba(255,255,255,.5);border-radius:50%;display:grid;place-items:center;font-family:"Zen Old Mincho",serif;color:#fff}
.footer-brand b{display:block;margin-top:1rem;color:#fff;letter-spacing:.14em;font-size:1rem}
.footer-addr{font-size:.82rem;margin-top:.8rem;line-height:2}
.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:.6rem 2.4rem;font-size:.82rem}
.footer-nav a:hover{color:#fff}
.footer-bottom{max-width:var(--wrap);margin:2.8rem auto 0;padding-top:1.6rem;border-top:1px solid var(--hair-light);font-size:.68rem;letter-spacing:.18em;color:rgba(255,255,255,.5)}

/* ---- reveal ---- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.on{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}
.reveal[data-d="2"]{transition-delay:.2s}
.reveal[data-d="3"]{transition-delay:.3s}

/* ---- responsive ---- */
@media(max-width:960px){
  .concept{grid-template-columns:1fr}
  .biz-lead{grid-template-columns:1fr}
  .biz-sub{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .vlabel{display:none}
}
@media(max-width:680px){
  .nav a:not(.nav-cta){display:none}
  .nav-toggle{display:flex;flex-direction:column;justify-content:center;gap:6px;width:40px;height:34px;background:none;border:0;cursor:pointer}
  .nav-toggle span{display:block;width:24px;height:2px;margin-left:auto;background:currentColor;transition:transform .25s,opacity .2s}
  .nav-toggle.on span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .nav-toggle.on span:nth-child(2){opacity:0}
  .nav-toggle.on span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
  .nav{gap:14px}
  .nav.menu-open{position:fixed;inset:0;background:var(--ink);flex-direction:column;justify-content:center;align-items:center;gap:1.6rem;color:#fff}
  .nav.menu-open a:not(.nav-cta){display:block;font-size:1.1rem;letter-spacing:.2em}
  .nav.menu-open .nav-cta{margin-top:1rem}
  .footer-top{flex-direction:column;gap:2rem}
  .footer-nav{grid-template-columns:1fr}
  .steps .step{grid-template-columns:1fr;gap:.3rem}
}
@media(prefers-reduced-motion:reduce){
  .hero-img{animation:none}.hero-side .line::after{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
}

/* ---- 支給ロゴ（2026-09-03 差し替え） ----
   ヘッダー・フッターの文字モノグラム（青）を、支給されたアイコン画像に置き換えた。
   画像なので枠線・丸みは不要。大きさだけ整える。 */
.brand img.mono,
.footer-brand img.mono{
  border:0;border-radius:0;background:none;padding:0;
  object-fit:contain;display:block;
}
.brand img.mono{width:38px;height:38px}
.footer-brand img.mono{width:48px;height:48px}
/* ヘッダーが白くなる前（写真の上）でも見えるよう、うっすら影を置く */
.site-header:not(.solid) .brand img.mono{filter:drop-shadow(0 1px 6px rgba(0,0,0,.35))}