/* ============================================================
   合同会社ケイズ
   軸: 定款3 ウェブサイトの企画・制作・運営
   構成: hero=letterbox（上下に黒帯／文字は左寄せ）/ 図版=左端まで裁ち落とし /
        事業=左右交互のジグザグ / 進め方=番号付きグリッド / 対応範囲あり
   動き: entrance=curtain（真鍮の幕が横切る）+ line-mask-up /
        scroll=sticky-heading / hover=corner-border（角から枠を描くボタン）
   ============================================================ */
:root{
  --ink:#0c0b0d;
  --panel:#151317;
  --panel-2:#1d1a1e;
  --cream:#ece7dc;
  --cream-2:#b0a795;
  --cream-3:#7a7160;
  --brass:#c19a5b;
  --brass-hi:#e0bd82;
  --hair:rgba(236,231,220,.13);
  --wrap:1220px;
  --pad:clamp(1.3rem,4.5vw,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,Meiryo,sans-serif;background:var(--ink);color:var(--cream);line-height:2;font-size:15px;letter-spacing:.04em;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--brass);color:var(--ink)}
.serif{font-family:"Noto Serif JP","Hiragino Mincho ProN",serif;font-weight:600}
.lat{font-family:"Cormorant Garamond",serif;letter-spacing:.4em;text-transform:uppercase;font-size:.72rem;color:var(--brass);font-weight:600}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.progress{position:fixed;top:0;left:0;height:1px;width:0;background:var(--brass);z-index:90;transition:width .1s linear}

.site-header{position:fixed;inset:0 0 auto 0;z-index:80;display:flex;align-items:center;justify-content:space-between;padding:24px var(--pad);transition:background .4s,padding .4s}
.site-header.solid{background:rgba(12,11,13,.92);backdrop-filter:blur(8px);padding-top:15px;padding-bottom:15px}
.brand{display:flex;align-items:center;gap:12px}
.brand .mono{width:34px;height:34px;border:1px solid var(--brass);display:grid;place-items:center;font-family:"Cormorant Garamond",serif;font-size:1.05rem;color:var(--brass);flex:none}
.brand .bt b{display:block;font-family:"Noto Serif JP",serif;font-weight:600;font-size:.94rem;letter-spacing:.18em}
.brand .bt span{font-family:"Cormorant Garamond",serif;font-size:.6rem;letter-spacing:.32em;color:var(--cream-3)}
.nav{display:flex;align-items:center;gap:24px}
.nav a{font-family:"Cormorant Garamond",serif;font-size:.88rem;letter-spacing:.24em;text-transform:uppercase}
.nav a:not(.nav-cta):hover,.nav a[aria-current=page]:not(.nav-cta){color:var(--brass)}
.nav .nav-cta{position:relative;padding:9px 20px;font-size:.74rem;letter-spacing:.14em;color:var(--brass)}
/* 角から枠を描く */
.nav .nav-cta::before,.nav .nav-cta::after{content:"";position:absolute;width:100%;height:100%;left:0;top:0;pointer-events:none}
.nav .nav-cta::before{border-top:1px solid var(--brass);border-right:1px solid var(--brass);transform:scale(0,1);transform-origin:left;transition:transform .3s}
.nav .nav-cta::after{border-bottom:1px solid var(--brass);border-left:1px solid var(--brass);transform:scale(0,1);transform-origin:right;transition:transform .3s .12s}
.nav .nav-cta:hover::before,.nav .nav-cta:hover::after{transform:scale(1,1)}
.nav-toggle{display:none}

/* hero：上下に黒帯。文字は左に寄せる */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;background:#000}
.hero-img{position:absolute;inset:-5% 0;background-size:cover;background-position:center;filter:brightness(.48) contrast(1.08) saturate(.85);transform:scale(1.1);transition:transform 2.2s cubic-bezier(.16,1,.3,1)}
.hero.lit .hero-img{transform:scale(1)}
.hero::before,.hero::after{content:"";position:absolute;left:0;right:0;height:11vh;background:#000;z-index:3;transition:transform 1.1s cubic-bezier(.2,.7,.2,1)}
.hero::before{top:0;transform:translateY(-100%)}
.hero::after{bottom:0;transform:translateY(100%)}
.hero.lit::before,.hero.lit::after{transform:none}
.hero-veil{position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,11,13,.88),rgba(12,11,13,.3) 60%,rgba(12,11,13,.55))}
.hero-inner{position:relative;z-index:4;max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);width:100%}
.hero .lat{display:block;margin-bottom:1.6rem;opacity:0;transition:opacity .8s .2s}
.hero.lit .lat{opacity:1}
.hero h1{font-family:"Noto Serif JP",serif;font-weight:700;font-size:clamp(2.1rem,5.6vw,4.4rem);line-height:1.5;letter-spacing:.1em}
.hero h1 .ln{display:block;overflow:hidden}
.hero h1 .ln>span{display:block;transform:translateY(110%);transition:transform 1s cubic-bezier(.2,.7,.2,1)}
.hero.lit h1 .ln>span{transform:none}
.hero.lit h1 .ln:nth-child(2)>span{transition-delay:.14s}
.hero .sub{margin-top:2rem;max-width:33rem;color:var(--cream-2);font-size:.95rem;opacity:0;transition:opacity 1s .6s}
.hero.lit .sub{opacity:1}
.hero-actions{margin-top:2.6rem;display:flex;gap:2.2rem;flex-wrap:wrap;opacity:0;transition:opacity 1s .8s}
.hero.lit .hero-actions{opacity:1}
.hero-rail{position:absolute;right:calc(var(--pad) - 2px);top:50%;transform:translateY(-50%);z-index:4;writing-mode:vertical-rl;font-family:"Cormorant Garamond",serif;letter-spacing:.4em;text-transform:uppercase;font-size:.66rem;color:var(--cream-3);display:flex;align-items:center;gap:16px}
.hero-rail::before,.hero-rail::after{content:"";width:1px;height:44px;background:var(--hair)}

/* ボタン：角から枠を描く */
.btn{position:relative;display:inline-block;font-family:"Cormorant Garamond",serif;font-size:.9rem;letter-spacing:.24em;text-transform:uppercase;padding:14px 26px;color:var(--cream)}
.btn .ar{display:none}
.btn::before,.btn::after{content:"";position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none}
.btn::before{border-top:1px solid var(--brass);border-right:1px solid var(--brass);transform:scale(0,1);transform-origin:left;transition:transform .32s}
.btn::after{border-bottom:1px solid var(--brass);border-left:1px solid var(--brass);transform:scale(0,1);transform-origin:right;transition:transform .32s .12s}
.btn:hover{color:var(--brass-hi)}
.btn:hover::before,.btn:hover::after{transform:scale(1,1)}
.btn-fill{background:var(--brass);color:var(--ink)}
.btn-fill:hover{background:var(--brass-hi);color:var(--ink)}
.btn-fill::before,.btn-fill::after{border-color:var(--cream)}

/* section：見出しを貼り付けて本文が流れる2カラム */
.section{padding:clamp(5rem,12vw,9.5rem) 0;position:relative;background:var(--ink)}
.section.panel{background:var(--panel)}
.section.panel-2{background:var(--panel-2)}
.split-sec{display:grid;grid-template-columns:15rem 1fr;gap:clamp(1.6rem,5vw,4.5rem);align-items:start}
.sec-head{position:sticky;top:6.5rem}
.sec-head .lat{display:block;margin-bottom:.9rem}
.sec-head h2{font-family:"Noto Serif JP",serif;font-weight:600;font-size:clamp(1.35rem,2.6vw,1.85rem);line-height:1.7;letter-spacing:.1em}
.sec-head .num{display:block;font-family:"Cormorant Garamond",serif;font-size:.8rem;color:var(--cream-3);margin-top:1rem;padding-top:1rem;border-top:1px solid var(--hair)}
.lead{color:var(--cream-2)}

/* 事業：左右交互のジグザグ */
.zig{display:grid;gap:clamp(2.4rem,6vw,4.5rem)}
.zig .z{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.4rem,4vw,3rem);align-items:center}
.zig .z:nth-child(even){direction:rtl}
.zig .z:nth-child(even)>*{direction:ltr}
.zig .z .fig{position:relative;overflow:hidden}
.zig .z .fig img{width:100%;aspect-ratio:4/3;object-fit:cover;filter:brightness(.75) saturate(.85)}
/* 真鍮の幕が横切ってから画が出る */
.zig .z .fig::after{content:"";position:absolute;inset:0;background:var(--brass);transform:scaleX(0);transform-origin:left;z-index:2}
.reveal.on .zig .z .fig::after,.zig .z.on .fig::after{animation:curtain 1.15s cubic-bezier(.7,0,.3,1) forwards}
@keyframes curtain{0%{transform:scaleX(0);transform-origin:left}45%{transform:scaleX(1);transform-origin:left}55%{transform:scaleX(1);transform-origin:right}100%{transform:scaleX(0);transform-origin:right}}
.zig .z .tag{display:inline-block;font-family:"Cormorant Garamond",serif;font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;border-top:1px solid var(--brass);border-bottom:1px solid var(--brass);padding:4px 12px;margin-bottom:1rem;color:var(--brass)}
.zig .z .k{font-family:"Cormorant Garamond",serif;font-size:2.4rem;color:var(--brass);opacity:.6;line-height:1;display:block;margin-bottom:.4rem}
.zig .z h3{font-family:"Noto Serif JP",serif;font-weight:600;font-size:clamp(1.1rem,2.3vw,1.42rem);margin-bottom:1rem;letter-spacing:.06em}
.zig .z p{color:var(--cream-2);font-size:.92rem}
.zig .z p+p{margin-top:.85rem}
.note-line{margin-top:2.4rem;font-size:.79rem;color:var(--cream-3);max-width:44rem}

/* 概念：写真を左端まで裁ち落とす */
.bleed{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(1.6rem,5vw,4rem);align-items:center}
.bleed .fig{margin-left:calc(var(--pad) * -1);overflow:hidden}
.bleed .fig img{width:100%;aspect-ratio:5/4;object-fit:cover;filter:brightness(.78) saturate(.85);clip-path:inset(0 100% 0 0);transition:clip-path 1.25s cubic-bezier(.2,.7,.2,1)}
.reveal.on .bleed .fig img,.bleed.reveal.on .fig img{clip-path:inset(0)}
.bleed .big{font-family:"Noto Serif JP",serif;font-weight:600;font-size:clamp(1.3rem,2.9vw,1.95rem);line-height:1.95;letter-spacing:.09em;margin-bottom:1.4rem}
.bleed p{color:var(--cream-2);margin-top:.9rem;font-size:.93rem}

/* 進め方：番号付きグリッド */
.grid-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1px;background:var(--hair);border:1px solid var(--hair)}
.grid-steps .g{background:var(--ink);padding:1.9rem 1.6rem}
.section.panel .grid-steps .g{background:var(--panel)}
.section.panel-2 .grid-steps .g{background:var(--panel-2)}
.grid-steps .g .k{font-family:"Cormorant Garamond",serif;font-size:1.5rem;color:var(--brass);display:block;line-height:1}
.grid-steps .g h4{font-family:"Noto Serif JP",serif;font-weight:600;font-size:1rem;margin:.7rem 0 .5rem;letter-spacing:.05em}
.grid-steps .g p{font-size:.88rem;color:var(--cream-2)}

/* 対応範囲：縦の一覧 */
.scope-list{display:grid;gap:0;max-width:38rem}
.scope-list li{list-style:none;display:flex;align-items:baseline;gap:1rem;padding:1.05rem 0;border-bottom:1px solid var(--hair);font-size:.93rem}
.scope-list li:first-child{border-top:1px solid var(--hair)}
.scope-list li::before{content:"—";color:var(--brass);flex:none}

/* FAQ */
.faq{max-width:46rem}
.faq details{border-bottom:1px solid var(--hair);padding:1.35rem 0}
.faq details:first-child{border-top:1px solid var(--hair)}
.faq summary{list-style:none;cursor:pointer;display:flex;gap:1rem;font-family:"Noto Serif JP",serif;font-weight:500;font-size:.98rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"Q";font-family:"Cormorant Garamond",serif;color:var(--brass);flex:none;font-size:1.05rem}
.faq summary::after{content:"+";margin-left:auto;color:var(--cream-3);transition:transform .22s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:.95rem 0 0 2rem;color:var(--cream-2);font-size:.9rem}

.table-info{width:100%;border-collapse:collapse;font-size:.92rem}
.table-info th,.table-info td{border-top:1px solid var(--hair);padding:1.2rem .3rem;text-align:left;vertical-align:top}
.table-info th{width:11rem;font-family:"Cormorant Garamond",serif;font-weight:600;color:var(--cream-3);letter-spacing:.1em;font-size:.88rem}
.table-info tr:last-child td,.table-info tr:last-child th{border-bottom:1px solid var(--hair)}

.cta{background:var(--panel-2);text-align:left;padding:clamp(4.5rem,11vw,8rem) var(--pad)}
.cta .inner{max-width:var(--wrap);margin:0 auto}
.cta .lat{display:block;margin-bottom:1rem}
.cta h2{font-family:"Noto Serif JP",serif;font-weight:600;font-size:clamp(1.5rem,3.4vw,2.3rem);margin-bottom:.8rem;letter-spacing:.12em}
.cta p{color:var(--cream-2);margin-bottom:2.2rem;max-width:34rem}

.page-hero{padding:clamp(8.5rem,16vw,12rem) var(--pad) clamp(2.8rem,6vw,4.4rem);border-bottom:1px solid var(--hair)}
.page-hero .lat{display:block;margin-bottom:.9rem}
.page-hero h1{font-family:"Noto Serif JP",serif;font-weight:700;font-size:clamp(1.8rem,4.4vw,2.9rem);letter-spacing:.14em}

.prose{max-width:44rem}
.prose h2{font-family:"Noto Serif JP",serif;font-weight:600;font-size:1.1rem;margin:2.6rem 0 .9rem;padding-bottom:.5rem;border-bottom:1px solid var(--hair);letter-spacing:.06em}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--cream-2);font-size:.92rem}
.prose ul,.prose ol{margin:.5rem 0 .5rem 1.4rem}.prose li{margin:.3rem 0}
.prose .stamp{font-size:.79rem;color:var(--cream-3);margin-top:2.2rem}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;max-width:44rem;margin-bottom:2.4rem}
.contact-grid .card{padding:1.4rem 1.4rem 1.4rem 0;border-top:1px solid var(--hair)}
.contact-grid .card .lat{display:block;margin-bottom:.4rem}
.form{max-width:44rem;display:grid;gap:1.1rem}
.form label{font-family:"Cormorant Garamond",serif;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;display:block;margin-bottom:.35rem;color:var(--cream-3)}
.form input,.form textarea{width:100%;border:0;border-bottom:1px solid var(--hair);padding:.75rem 0;font:inherit;background:transparent;color:var(--cream)}
.form input:focus,.form textarea:focus{outline:none;border-bottom-color:var(--brass)}
.form .note{font-size:.83rem;color:var(--cream-2);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);padding:1rem 0}

.site-footer{background:#08070a;color:var(--cream-3);padding:clamp(3.5rem,8vw,5.5rem) var(--pad) 2.2rem}
.footer-top{max-width:var(--wrap);margin:0 auto;display:flex;justify-content:space-between;gap:2.6rem;flex-wrap:wrap}
.footer-brand .mono{width:38px;height:38px;border:1px solid var(--brass);display:grid;place-items:center;font-family:"Cormorant Garamond",serif;color:var(--brass);font-size:1.15rem}
.footer-brand b{display:block;margin-top:.9rem;color:var(--cream);font-family:"Noto Serif JP",serif;letter-spacing:.18em;font-size:.98rem}
.footer-addr{font-size:.81rem;margin-top:.7rem;line-height:1.95}
.footer-nav{display:grid;grid-template-columns:1fr 1fr;gap:.5rem 2.2rem;font-size:.81rem}
.footer-nav a:hover{color:var(--brass)}
.footer-bottom{max-width:var(--wrap);margin:2.4rem auto 0;padding-top:1.4rem;border-top:1px solid var(--hair);font-family:"Cormorant Garamond",serif;font-size:.7rem;letter-spacing:.22em}

.reveal{opacity:0;transform:translateY(22px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.reveal.on{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}

@media(max-width:960px){
  .split-sec{grid-template-columns:1fr;gap:1.6rem}
  .sec-head{position:static}
  .zig .z,.bleed{grid-template-columns:1fr}
  .zig .z:nth-child(even){direction:ltr}
  .bleed .fig{margin-left:0}
  .contact-grid{grid-template-columns:1fr}
  .hero-rail{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:38px;height:32px;background:none;border:0;cursor:pointer}
  .nav-toggle span{display:block;width:22px;height:1px;margin-left:auto;background:var(--brass);transition:transform .25s,opacity .2s}
  .nav-toggle.on span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle.on span:nth-child(2){opacity:0}
  .nav-toggle.on span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav.menu-open{position:fixed;inset:0;background:var(--ink);flex-direction:column;justify-content:center;align-items:center;gap:2rem}
  .nav.menu-open a:not(.nav-cta){display:block;font-size:1.05rem;letter-spacing:.3em}
  .hero::before,.hero::after{height:5vh}
  .footer-top{flex-direction:column;gap:1.6rem}.footer-nav{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .hero-img{transform:none!important}
  .reveal,.hero h1 .ln>span,.hero .sub,.hero-actions,.hero .lat,.bleed .fig img{transition:none;opacity:1;transform:none;clip-path:none}
  .hero::before,.hero::after{display:none}
  .zig .z .fig::after{display:none}
}

/* ---- 日本語の折り返しを整える（2026-09-03） ----
   既定のままだと「ほと／んど」「デザ／イン」「ウ／ェブサイト」のように
   語の途中で改行されてしまう。次の3つで、意味の切れ目で折り返すようにする。
     line-break:strict … 小さい「ェ」「ゃ」「ー」等を行頭に置かせない
     word-break:auto-phrase … 文節単位で折り返す（Chrome/Edge）
     text-wrap:pretty / balance … 最終行が1語だけになるのを避ける
   対応していないブラウザでも、崩れずに従来どおり表示される。 */
body{line-break:strict;word-break:auto-phrase}
p,li,dd,td,.a,.sub,.lead,.note-line{text-wrap:pretty}
h1,h2,h3,h4{text-wrap:balance;line-break:strict;word-break:auto-phrase}
.big{text-wrap:pretty;line-break:strict;word-break:auto-phrase}
/* 途中で割りたくない語 */
.nb{white-space:nowrap}
/* 進め方の升目が細すぎて1行が短くなっていたので広げる */
.grid-steps{grid-template-columns:repeat(auto-fit,minmax(268px,1fr))}
/* 升目の数が合わないと最後に空きマスが出るので、最後の1枚で残りを埋める */
.grid-steps .g:last-child{grid-column:1/-1}

.note-line a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.note-line a:hover{color:var(--brass)}

/* ---- ロゴ（支給の丸いマーク） ----
   サイトの地が黒に近いので、生成りの丸い台座に載せて濃紺のビルを見えるようにする */
.brand img.mono,.footer-brand img.mono{border:0;background:var(--cream);border-radius:50%;
  padding:0;object-fit:contain;display:block;flex:none}
.brand img.mono{width:38px;height:38px}
.footer-brand img.mono{width:44px;height:44px}
.brand img.mono{transition:box-shadow .35s}
.brand:hover img.mono{box-shadow:0 0 0 3px rgba(193,154,91,.35)}