/* ============================================================
   UNDERBELT — design tokens
   ============================================================ */
/* ---- tokens（ライトのみ。ダークテーマは 2026-09-09 殿裁定で廃止） ---- */
:root{
  --bg:#f7f8fb;
  --bg-grad-hero:linear-gradient(180deg,#ffffff 0%,#e9ecfa 55%,#f7f8fb 100%);
  --indigo:#5563d4;
  --indigo-light:#4c5ac9;
  --indigo-dim:rgba(85,99,212,.4);
  --line:rgba(20,24,50,.08);
  --line-strong:rgba(20,24,50,.12);
  --line-mid:rgba(20,24,50,.15);
  --tx:#14161f;
  --tx-1:rgba(20,22,31,.88);
  --tx-2:rgba(20,22,31,.74);
  --tx-3:rgba(20,22,31,.62);
  --tx-4:rgba(20,22,31,.52);
  --ghost-line:rgba(20,24,50,.2);
  --ghost-strong:rgba(20,24,50,.32);
  --hdr-bg:rgba(255,255,255,.72);
  --bnav-bg:rgba(255,255,255,.9);
  --input-bg:#fff;
  --input-line:rgba(20,24,50,.18);
  --dot:rgba(20,24,50,.15);
  --ph-a:#e9ebf5;
  --ph-b:#f6f7fb;
  --ph-tx:rgba(20,24,50,.3);
  --btn-bg:#5563d4;
  --belt-c1:#5563d4;
  --belt-c2:#8a94e8;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN','Hiragino Sans',Meiryo,'Noto Sans JP',sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --pad-x:56px;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:28px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--bg);color:var(--tx);line-height:1.8;letter-spacing:.02em;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* ============ header + bottom nav ============ */
#hdr{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:18px 40px;background:var(--hdr-bg);backdrop-filter:blur(8px);border-bottom:.5px solid var(--line)}
#hdr{transition:background .3s,border-color .3s}
.hdr-right{display:flex;align-items:center;gap:24px}
.hdr-logo{display:flex;align-items:center;cursor:pointer;color:inherit}
.hdr-logo img{height:16px;width:auto}
.hdr-nav{display:flex;gap:28px}
.hdr-nav a{font-size:11px;color:var(--tx-2);letter-spacing:.1em;font-family:var(--mono);cursor:pointer;transition:color .2s}
.hdr-nav a:hover{color:var(--tx-1)}
.hdr-nav a.active{color:var(--tx)}
#bnav{display:none;position:fixed;bottom:0;left:0;right:0;z-index:50;justify-content:space-around;padding:10px 4px calc(8px + env(safe-area-inset-bottom,0));background:var(--bnav-bg);backdrop-filter:blur(8px);border-top:.5px solid var(--line-strong)}
.bnav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:44px;padding:6px 10px;cursor:pointer}
.bnav-item span{font-size:10px;color:var(--tx-3);letter-spacing:.08em;font-family:var(--mono)}
.bnav-item .bd{width:3px;height:3px;border-radius:50%;background:var(--dot);transition:background .2s}
.bnav-item.active span{color:var(--tx-1)}
.bnav-item.active .bd{background:var(--indigo)}

/* ============ page system ============ */
.sec[id],.hero[id]{scroll-margin-top:72px}
.page{display:none}
.page.active{display:block;animation:pageIn .5s var(--ease)}
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ============ shared section + type ============ */
.sec{padding:72px var(--pad-x);border-top:.5px solid var(--line)}
.sec-en{font-size:10px;letter-spacing:.18em;color:var(--indigo-light);opacity:.7;font-family:var(--mono);margin-bottom:10px}
.sec-h{font-size:clamp(26px,3vw,32px);font-weight:700;letter-spacing:.05em;line-height:1.4;text-transform:uppercase}
.sec-h.lc{text-transform:none}
.sec-lead{font-size:14px;color:var(--tx-2);line-height:2;max-width:700px}

.cta-text{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--indigo-light);font-family:var(--mono);border-bottom:.5px solid var(--indigo-dim);padding-bottom:3px;cursor:pointer;transition:gap .2s,border-color .2s}
.cta-text:hover{gap:12px;border-color:var(--indigo)}
.btn-fill{display:inline-flex;align-items:center;gap:10px;background:var(--btn-bg);color:#fff;padding:16px 40px;border-radius:var(--r-lg);font-size:12px;letter-spacing:.1em;font-family:var(--mono);font-weight:500;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s}
.btn-fill:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(108,124,224,.3)}

.phero-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:44px;gap:16px}
.phero-back{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.1em;color:var(--tx-2);font-family:var(--mono);border:.5px solid var(--ghost-line);padding:8px 16px;border-radius:var(--r-lg);cursor:pointer;transition:border-color .2s,background .2s}
.phero-back:hover{border-color:var(--indigo);background:rgba(108,124,224,.1)}
.phero-crumb{font-size:10px;letter-spacing:.16em;color:var(--tx-4);font-family:var(--mono)}
.phero-crumb b{color:var(--indigo-light);font-weight:400}

.ph{background:linear-gradient(135deg,var(--ph-a),var(--ph-b));display:flex;align-items:center;justify-content:center}
.ph span{font-size:10px;color:var(--ph-tx);font-family:var(--mono);letter-spacing:.1em;text-align:center;padding:0 12px}

/* ============ HOME — HERO ============ */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:flex-end;background:var(--bg-grad-hero);padding:0 var(--pad-x) 88px;overflow:hidden}
.hero-canvas{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-glow{position:absolute;top:38%;left:58%;width:min(820px,96vw);height:min(820px,96vw);transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(108,124,224,.22),rgba(108,124,224,0) 62%);animation:heroBreath 9s var(--ease) infinite}
.hero-glow.two{top:78%;left:18%;width:min(520px,70vw);height:min(520px,70vw);background:radial-gradient(circle,rgba(108,124,224,.12),rgba(108,124,224,0) 64%);animation-delay:-4.5s}
@keyframes heroBreath{0%,100%{opacity:.6;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.07)}}
.hero-belt{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:1}
.hero-mark{position:absolute;right:-6%;top:50%;width:min(1100px,92vw);transform:translateY(-50%);opacity:.035;pointer-events:none}
.hero-inner{position:relative;z-index:1}
.hero-en{font-size:11px;letter-spacing:.24em;color:var(--indigo-light);font-family:var(--mono);margin-bottom:22px}
.hero-ja{font-size:clamp(38px,7.4vw,76px);font-weight:600;line-height:1.28;letter-spacing:-.01em;position:relative;padding-left:26px;color:var(--tx)}
.hero-ja::before{content:"";position:absolute;left:0;top:.12em;bottom:.12em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--indigo-light),var(--indigo))}
.hero-ja span{display:block}
.hero-tag{margin-top:26px;font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--tx-3)}
.hero-scroll{margin-top:56px;display:flex;align-items:center;gap:12px}
.hero-scroll-line{position:relative;width:1px;height:34px;background:linear-gradient(var(--indigo-dim),transparent);overflow:hidden}
.hero-scroll-line::after{content:"";position:absolute;left:-1px;top:0;width:3px;height:9px;border-radius:2px;background:var(--indigo-light);animation:scrollRun 1.9s var(--ease) infinite}
@keyframes scrollRun{0%{transform:translateY(-10px);opacity:0}25%{opacity:1}100%{transform:translateY(34px);opacity:0}}
.hero-scroll-text{font-size:9px;color:var(--tx-3);letter-spacing:.14em;font-family:var(--mono)}

/* ============ HOME — ABOUT ============ */
.about-2col{display:grid;grid-template-columns:minmax(380px,480px) 1fr;gap:56px;align-items:center;margin-top:44px}
.about-2col.nophoto{grid-template-columns:1.15fr .85fr;gap:72px;align-items:start}
.about-2col.nophoto .about-lead{margin-bottom:0;font-size:clamp(24px,3.2vw,38px);line-height:1.65}
.about-2col.nophoto .about-body{max-width:none;margin-top:6px}
.about-photo{width:100%;height:420px;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden}
.about-photo img,.proj-visual img,.ppl-photo img{width:100%;height:100%;object-fit:cover;display:block}
.about-lead{font-size:clamp(21px,2.6vw,30px);line-height:1.75;margin-bottom:28px;font-weight:700;letter-spacing:.01em;position:relative;padding-left:22px}
.about-lead::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--indigo-light),var(--indigo))}
.about-lead .ac,.phi-lead .ac,.intro-lead .ac{color:var(--indigo);display:inline-block}
.about-body{font-size:14px;color:var(--tx-2);line-height:2;margin-bottom:32px;max-width:520px}

/* ============ HOME — PROJECTS ============ */
.sec-head-full{margin-bottom:48px}
.sec-head-full .sec-h{font-size:clamp(28px,3.4vw,36px)}
.sec-head-full .sec-h small{display:block;font-size:12px;color:var(--tx-4);font-weight:400;margin-top:10px;letter-spacing:.04em;line-height:1.6;text-transform:none}
.proj-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.proj-track::-webkit-scrollbar{display:none}
.proj-card{color:inherit;flex:0 0 88%;scroll-snap-align:start;display:grid;grid-template-columns:1.4fr 1fr;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden;background:var(--bg);cursor:pointer;transition:border-color .25s var(--ease),background .25s var(--ease)}
.proj-card:hover{border-color:var(--indigo-dim);background:rgba(108,124,224,.03)}
.proj-card:hover .cta-text{gap:12px;border-color:var(--indigo)}
.proj-nav{display:flex;align-items:center;gap:14px;justify-content:flex-end;margin-top:22px}
.proj-count{font-family:var(--mono);font-size:11px;color:var(--tx-3);letter-spacing:.12em}
.proj-count b{color:var(--indigo);font-weight:600}
.pj-btn{width:40px;height:40px;border-radius:50%;border:.5px solid var(--line-mid);color:var(--tx-2);font-size:14px;display:flex;align-items:center;justify-content:center;transition:border-color .2s,color .2s,background .2s}
.pj-btn:hover{border-color:var(--indigo);color:var(--indigo);background:rgba(108,124,224,.08)}
.pj-btn[aria-disabled="true"]{opacity:.3;pointer-events:none}
.proj-nav[hidden]{display:none}
.proj-visual{height:380px;position:relative;overflow:hidden}
.proj-badge{position:absolute;z-index:1;top:20px;left:20px;font-size:9px;letter-spacing:.1em;color:var(--indigo-light);font-family:var(--mono);background:rgba(108,124,224,.14);padding:5px 11px;border-radius:6px}
.proj-cbody{padding:56px;display:flex;flex-direction:column;justify-content:center}
.proj-ctitle{font-size:28px;font-weight:600;margin-bottom:18px}
.proj-ccopy{font-size:15px;color:var(--tx-2);line-height:1.9;margin-bottom:32px}

/* ============ HOME — PHILOSOPHY ============ */
.phi-lead{font-size:clamp(20px,2.6vw,28px);line-height:1.8;margin-bottom:56px;font-weight:700;letter-spacing:.01em;position:relative;padding-left:22px}
.phi-lead::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--indigo-light),var(--indigo))}
.phi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.phi-item{position:relative;border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:30px 28px;background:linear-gradient(180deg,rgba(108,124,224,.07),rgba(108,124,224,0) 55%)}
.phi-item::before{content:"";position:absolute;top:-1px;left:28px;width:56px;height:2px;border-radius:1px;background:linear-gradient(90deg,var(--indigo),transparent)}
.phi-no{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--tx-3);margin-bottom:16px}
.phi-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.phi-en{font-family:var(--mono);font-size:clamp(19px,1.8vw,23px);font-weight:700;letter-spacing:.06em;color:var(--indigo);line-height:1}
.phi-ja{font-size:13px;font-weight:600;color:var(--tx-1);letter-spacing:.2em}
.phi-text{font-size:14px;color:var(--tx-2);line-height:2}
.phi-cycle{margin-top:40px;position:relative;padding:160px 24px;text-align:center;overflow:hidden}
.phi-cycle::before{content:"";position:absolute;left:50%;top:50%;width:420px;height:420px;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(108,124,224,.09),rgba(108,124,224,0) 68%);pointer-events:none}
.phi-ring-wrap{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.phi-orbit{position:relative;width:340px;height:340px}
.phi-ring{width:100%;height:100%;overflow:visible;display:block}
.orbit-label{position:absolute;font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--indigo-light);white-space:nowrap}
.orbit-label.l-top{left:50%;top:7.5%;transform:translate(-50%,22px)}
.orbit-label.l-br{left:86.8%;top:71.25%;transform:translate(-50%,22px)}
.orbit-label.l-bl{left:13.2%;top:71.25%;transform:translate(-50%,22px)}
.phi-ring .ring-base{fill:none;stroke:rgba(108,124,224,.16);stroke-width:1}
.phi-ring .ring-belt{fill:none;stroke:url(#cycGrad);stroke-width:2;stroke-linecap:round;transform-origin:200px 200px;animation:beltSweep 14s linear infinite}
.phi-ring .node-halo{fill:rgba(108,124,224,.10);stroke:rgba(108,124,224,.28);stroke-width:1;transform-box:fill-box;transform-origin:center;animation:nodePulse 14s var(--ease) infinite}
.phi-ring .node:nth-of-type(2) .node-halo{animation-delay:4.667s}
.phi-ring .node:nth-of-type(3) .node-halo{animation-delay:9.333s}
.phi-ring .node-core{fill:var(--indigo)}
.phi-ring .comet{fill:var(--belt-c2)}
.phi-ring .comet-glow{fill:rgba(108,124,224,.28)}
@keyframes beltSweep{to{transform:rotate(360deg)}}
@keyframes nodePulse{0%{transform:scale(1);opacity:1}2.5%{transform:scale(1.7);opacity:.45}7%{transform:scale(1);opacity:1}100%{transform:scale(1);opacity:1}}
.phi-cycle p{position:relative;z-index:1;font-size:15px;font-weight:600;color:var(--tx-1);letter-spacing:.02em;line-height:2}

/* ============ HOME — PEOPLE（横スクロール：人数が増えてもカードを足すだけ） ============ */
.ppl-track{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:6px}
.ppl-track::-webkit-scrollbar{display:none}
.ppl-card{flex:1 0 228px;scroll-snap-align:start;border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:28px 16px;text-align:center}
.ppl-photo{width:80px;height:80px;border-radius:50%;border:.5px solid var(--line-strong);margin:0 auto 16px;overflow:hidden}
.ppl-card.ppl-open{border-style:dashed;border-color:rgba(108,124,224,.45);color:inherit;transition:border-color .25s var(--ease),background .25s var(--ease)}
.ppl-card.ppl-open:hover{border-color:var(--indigo);background:rgba(108,124,224,.04)}
.ppl-photo.ppl-plus{display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:300;color:var(--indigo-light);border-style:dashed;border-color:rgba(108,124,224,.45);background:transparent}
.ppl-photo.ppl-init{display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:600;color:var(--indigo-light);background:rgba(108,124,224,.10)}
.ppl-name{font-size:14px;font-weight:600;margin-bottom:4px}
.ppl-role{font-size:8px;color:var(--indigo-light);letter-spacing:.06em;font-family:var(--mono);margin-bottom:12px;opacity:.75}
.ppl-line{font-size:14px;color:var(--tx-2);line-height:1.6}

/* ============ HOME — CONTACT ============ */
.contact{text-align:center;padding:96px var(--pad-x)}
.contact-en{font-size:10px;letter-spacing:.18em;color:var(--tx-4);font-family:var(--mono);margin-bottom:18px}
.contact-title{font-size:clamp(32px,6vw,44px);font-weight:600;margin-bottom:24px;letter-spacing:.01em}
.contact-body{font-size:15px;color:var(--tx-2);line-height:1.9;margin-bottom:36px}
.contact-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.ctag{padding:12px 24px;border:.5px solid rgba(108,124,224,.35);border-radius:var(--r-lg);font-size:12px;color:var(--tx-1);letter-spacing:.04em;cursor:pointer;transition:all .15s}
.ctag:hover{border-color:var(--indigo);background:rgba(108,124,224,.1)}
.ctag.active{background:var(--btn-bg);border-color:var(--indigo);color:#fff}
.cform{max-width:560px;margin:40px auto 0;text-align:left;display:none}
.cform.show{display:block;animation:pageIn .4s var(--ease)}
.cform-selected{font-size:12px;color:var(--tx-3);font-family:var(--mono);letter-spacing:.08em;margin-bottom:24px;text-align:center}
.cform-selected b{color:var(--indigo-light);font-weight:500}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.ffield{display:flex;flex-direction:column}
.ffield.full{grid-column:1/-1}
.flabel{font-size:12px;color:var(--tx-2);letter-spacing:.06em;margin-bottom:8px;font-family:var(--mono);text-align:left}
.flabel .opt{color:var(--tx-4);margin-left:6px}
.flabel .req{color:var(--indigo-light);margin-left:6px}
.finput{height:44px;background:var(--input-bg);border:.5px solid var(--input-line);border-radius:8px;padding:0 14px;font-size:14px;color:var(--tx);font-family:inherit;transition:border-color .2s}
.finput:focus{outline:none;border-color:var(--indigo)}
.ftext{min-height:120px;background:var(--input-bg);border:.5px solid var(--input-line);border-radius:8px;padding:14px;font-size:14px;color:var(--tx);font-family:inherit;resize:vertical;transition:border-color .2s}
.ftext:focus{outline:none;border-color:var(--indigo)}
.fsubmit{width:100%;margin-top:24px;height:52px;background:var(--btn-bg);border-radius:var(--r-lg);color:#fff;font-size:13px;letter-spacing:.1em;font-family:var(--mono);font-weight:500;transition:transform .2s var(--ease),box-shadow .2s}
.cform-status{font-size:14px;color:var(--indigo-light);line-height:1.8;text-align:center;margin-top:16px}
.cform-hp{display:none}
.cform-note{font-size:14px;color:var(--tx-3);line-height:1.9;text-align:center;margin-top:12px}
.cform-mail{color:var(--indigo-light);border-bottom:.5px solid rgba(108,124,224,.45)}
.cform-mail:hover{border-bottom-color:var(--indigo)}
.ftr-mail{font-size:11px;color:var(--tx-3);letter-spacing:.06em;font-family:var(--mono);border-bottom:.5px solid var(--line-strong)}
.ftr-mail:hover{color:var(--indigo-light);border-bottom-color:var(--indigo)}
.fsubmit:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(108,124,224,.3)}

/* ============================================================
   DETAIL pages — shared
   ============================================================ */
.phero{position:relative;padding:108px var(--pad-x) 60px;background:var(--bg-grad-hero);border-bottom:.5px solid var(--line)}
.phero-en{font-size:12px;letter-spacing:.18em;color:var(--tx-3);font-family:var(--mono);margin-bottom:16px}
.phero-badge{display:inline-block;font-size:9px;letter-spacing:.14em;color:var(--indigo-light);font-family:var(--mono);background:rgba(108,124,224,.14);padding:6px 13px;border-radius:6px;margin-bottom:22px}
.phero-ttl{font-size:clamp(28px,5vw,40px);font-weight:600;line-height:1.35;letter-spacing:.01em;margin-bottom:18px}
.phero-ttl.thin{font-weight:500;line-height:1.5}
.phero-ja{font-size:clamp(14px,1.8vw,17px);font-weight:500;color:var(--tx-2);letter-spacing:.04em;line-height:1.9;max-width:560px}
.phero-tag{margin-top:22px;font-size:11px;color:var(--tx-3);font-family:var(--mono);letter-spacing:.06em}
.phero-tag b{color:var(--indigo-light);font-weight:400}

/* ABOUT detail */
.intro-2col{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:center}
.intro-lead{font-size:clamp(20px,2.4vw,28px);font-weight:700;line-height:1.85;letter-spacing:.01em;position:relative;padding-left:22px}
.intro-lead::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:linear-gradient(180deg,var(--indigo-light),var(--indigo))}
.intro-body{font-size:14px;color:var(--tx-2);line-height:2.1}
.story-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:40px}
.story-card{position:relative;border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:30px 28px;background:linear-gradient(180deg,rgba(108,124,224,.05),rgba(108,124,224,0) 55%)}
.story-card::before{content:"";position:absolute;top:-1px;left:28px;width:56px;height:2px;border-radius:1px;background:linear-gradient(90deg,var(--indigo),transparent)}
.story-no{font-family:var(--mono);font-size:9px;letter-spacing:.16em;color:var(--indigo-light);margin-bottom:14px}
.story-ttl{font-size:16px;font-weight:600;line-height:1.6;margin-bottom:12px}
.story-txt{font-size:14px;color:var(--tx-2);line-height:2}
.mvv-item{display:grid;grid-template-columns:160px 1fr;gap:40px;padding:36px 0;border-top:.5px solid var(--line-strong)}
.mvv-item:first-of-type{border-top:1px solid rgba(108,124,224,.3)}
.mvv-label{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--indigo-light);font-family:var(--mono)}
.mvv-label small{display:block;font-family:var(--sans);font-weight:400;font-size:11px;color:var(--tx-3);margin-top:6px;letter-spacing:.04em}
.mvv-text{font-size:clamp(17px,2.2vw,20px);line-height:1.6;font-weight:500}
.mvv-sub{font-size:14px;color:var(--tx-2);line-height:1.9;margin-top:14px;font-weight:400}
.mvv-sub .ln{display:block}
.mvv-values{display:flex;flex-direction:column;gap:18px}
.mvv-values-wrap{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:32px;align-items:center}
.mvv-ring{position:relative;display:flex;align-items:center;justify-content:center}
.mvv-ring .phi-orbit{width:240px;height:240px}
.mvv-ring .orbit-label{font-size:10px}
.brand-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.brand-card{margin:0;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden;background:linear-gradient(180deg,rgba(108,124,224,.05),rgba(108,124,224,0) 55%)}
.brand-visual{height:220px;display:flex;align-items:center;justify-content:center;padding:36px 40px;border-bottom:.5px solid var(--line)}
.brand-visual img{max-width:100%;max-height:100%;object-fit:contain}
.brand-card figcaption{padding:22px 26px 26px;font-size:14px;color:var(--tx-2);line-height:1.9}
.brand-credit{display:flex;justify-content:flex-end;align-items:baseline;gap:14px;margin-top:18px;flex-wrap:wrap}
.bc-label{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--tx-3)}
.bc-name{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--tx-1);border-bottom:.5px solid var(--indigo-dim);padding-bottom:2px;transition:color .2s,border-color .2s}
.bc-name::after{content:"";width:12px;height:12px;background:currentColor;-webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/><polyline points='15 3 21 3 21 9'/><line x1='10' y1='14' x2='21' y2='3'/></svg>") center/contain no-repeat;mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/><polyline points='15 3 21 3 21 9'/><line x1='10' y1='14' x2='21' y2='3'/></svg>") center/contain no-repeat;flex:none}
.bc-name:hover{color:var(--indigo);border-color:var(--indigo)}
.brand-card figcaption b{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--indigo-light);font-weight:400;margin-bottom:10px}
.mvv-val{display:flex;gap:16px;align-items:baseline}
.mvv-val-n{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--indigo-light);font-family:var(--mono);min-width:130px;flex-shrink:0}
.mvv-val-n small{font-family:var(--sans);font-weight:400;color:var(--tx-3);margin-left:6px}
.mvv-val-t{font-size:14px;color:var(--tx-1);line-height:1.8}
.msg{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,3fr);gap:64px;align-items:start}
.msg-photo{width:100%;aspect-ratio:3/4;border:.5px solid var(--line-strong);border-radius:var(--r-md)}
.msg-photo img{width:100%;height:100%;object-fit:cover;object-position:center 30%;border-radius:inherit;display:block}
.msg-body{margin-bottom:28px}
.msg-body p{font-size:14px;color:var(--tx-2);line-height:2.1;margin-bottom:22px}
.msg-body p:first-child{font-size:15px;color:var(--tx-1);font-weight:600}
.msg-body p:last-child{margin-bottom:0}
.msg-sign{display:flex;align-items:baseline;justify-content:flex-end;gap:14px;letter-spacing:.06em}
.msg-sign span{font-size:12px;color:var(--tx-2)}
.msg-sign b{color:var(--tx);font-weight:600;font-size:19px;letter-spacing:.12em}
.profile-table{max-width:none;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden}
.prow{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:22px 32px;border-top:.5px solid var(--line);align-items:baseline}
.prow:first-child{border-top:none}
.prow:nth-child(even){background:rgba(108,124,224,.04)}
.pkey{font-size:11px;color:var(--indigo-light);letter-spacing:.14em;font-family:var(--mono)}
.pval{font-size:15px;color:var(--tx-1);line-height:1.9}
.ccta{text-align:center;padding:88px var(--pad-x) 80px}
.ccta-ttl{font-size:clamp(26px,4vw,36px);font-weight:600;margin-bottom:20px;line-height:1.5}
.ccta-body{font-size:14px;color:var(--tx-2);line-height:1.9;margin-bottom:32px}

/* BASE 01 — dental */
.shift-banner{background:linear-gradient(180deg,rgba(108,124,224,.07),rgba(108,124,224,0) 55%);border:.5px solid rgba(108,124,224,.2);border-radius:var(--r-md);padding:40px 44px;text-align:center}
.shift-banner .sb-en{font-size:10px;letter-spacing:.24em;color:var(--indigo-light);font-family:var(--mono);margin-bottom:16px}
.shift-banner .sb-main{font-size:clamp(18px,2.6vw,22px);font-weight:600;line-height:1.6}
.shift-banner .sb-main .ac{color:var(--indigo-light)}
.prob-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.prob-card{border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:26px 28px}
.prob-no{font-size:10px;color:var(--indigo-light);font-family:var(--mono);letter-spacing:.1em;margin-bottom:12px}
.prob-ttl{font-size:15px;line-height:1.7;font-weight:600;margin-bottom:10px}
.prob-desc{font-size:14px;color:var(--tx-2);line-height:1.85}
.steps{display:flex;flex-direction:column}
.step{display:grid;grid-template-columns:56px 1fr;gap:28px;position:relative;padding-bottom:36px}
.step:last-child{padding-bottom:0}
.step-num{position:relative}
.step-num-circle{width:44px;height:44px;border-radius:50%;border:1px solid rgba(108,124,224,.5);background:rgba(108,124,224,.1);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--indigo-light);font-family:var(--mono)}
.step-line{position:absolute;left:22px;top:44px;bottom:0;width:1px;background:linear-gradient(rgba(108,124,224,.5),rgba(108,124,224,.15))}
.step:last-child .step-line{display:none}
.step-body{border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:26px 30px}
.step-body.featured{border-color:rgba(108,124,224,.45);background:rgba(108,124,224,.06)}
.step-stage{font-size:10px;letter-spacing:.1em;color:var(--indigo-light);font-family:var(--mono);margin-bottom:10px}
.step-ttl{font-size:18px;font-weight:600;margin-bottom:6px}
.step-ttl small{font-size:11px;color:var(--tx-3);font-family:var(--mono);letter-spacing:.06em;margin-left:10px;font-weight:400}
.step-status{display:inline-block;font-size:9px;letter-spacing:.12em;font-family:var(--mono);color:var(--indigo-light);background:rgba(108,124,224,.14);padding:3px 9px;border-radius:6px;margin-left:10px;vertical-align:middle}
.step-status.dev{color:var(--tx-3);background:var(--line-strong)}
.step-note{margin-top:10px;font-size:13px;color:var(--tx-3);line-height:1.8}
.step-desc{font-size:14px;color:var(--tx-2);line-height:1.9;margin-top:10px}
.step-link{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:11px;letter-spacing:.08em;font-family:var(--mono);background:var(--btn-bg);color:#fff;padding:10px 20px;border-radius:var(--r-lg);font-weight:500;cursor:pointer;transition:transform .2s var(--ease)}
.step-link:hover{transform:translateY(-2px)}
.step-link.ext-link::after{content:"";width:13px;height:13px;background:currentColor;-webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/><polyline points='15 3 21 3 21 9'/><line x1='10' y1='14' x2='21' y2='3'/></svg>") center/contain no-repeat;mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><path d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/><polyline points='15 3 21 3 21 9'/><line x1='10' y1='14' x2='21' y2='3'/></svg>") center/contain no-repeat;flex:none}
.step-link.soon{background:var(--line-strong);color:var(--tx-3);pointer-events:none;cursor:default}
.conn.work .step-link{margin-top:22px}
.roles-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.role-card{border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:24px 26px}
.role-no{font-size:22px;font-weight:600;color:var(--indigo-light);font-family:var(--mono);margin-bottom:12px;opacity:.7}
.role-ttl{font-size:14px;font-weight:600;margin-bottom:8px}
.role-desc{font-size:14px;color:var(--tx-2);line-height:1.8}

/* BASE 02 — stays */
.phero-badges{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:22px}
/* HERO に写真を並べる型（BASE 02） */
.phero.has-visual{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(300px,.95fr);gap:56px;align-items:center}
.phero.has-visual .phero-top{grid-column:1/-1}
.phero-visual{position:relative;margin:0;aspect-ratio:4/3;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden;background:var(--ph-a)}
.place-grid{display:grid;grid-template-columns:1.05fr 1fr 1fr;grid-template-rows:250px 250px;gap:14px}
.place-grid figure{position:relative;margin:0;overflow:hidden;border-radius:var(--r-md);border:.5px solid var(--line-strong);background:var(--ph-a)}
.place-grid figure.tall{grid-row:1/3}
.place-grid img{width:100%;height:100%;object-fit:cover;display:block}
.phero-visual img{width:100%;height:100%;object-fit:cover;object-position:center 40%;display:block}
.phero-badges .phero-badge{margin-bottom:0}
.phero-status{display:inline-block;font-size:9px;letter-spacing:.12em;font-family:var(--mono);color:var(--tx-3);background:var(--line-strong);padding:6px 13px;border-radius:6px}
.phero-name{font-size:15px;color:var(--tx-2);letter-spacing:.1em;margin-bottom:10px}
.phero-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:30px}
.phero-ext-sub{font-size:11px;color:var(--tx-4);font-family:var(--mono);letter-spacing:.04em}
.shift-rows{max-width:560px;margin:22px auto 0;text-align:left}
.shift-row{display:flex;align-items:center;gap:18px;padding:11px 4px;border-top:.5px solid var(--line)}
.shift-row .w{font-size:14px;font-weight:600;width:150px;flex:none}
.shift-row .sy{font-size:14px;color:var(--tx-2)}
.shift-row.now{border-top:.5px solid rgba(108,124,224,.35);border-bottom:.5px solid rgba(108,124,224,.35);background:rgba(108,124,224,.06);padding:12px 10px;margin-top:2px;border-radius:6px}
.shift-row.now .w,.shift-row.now .sy{color:var(--indigo)}
.step-visual{display:block;margin-top:18px;max-width:480px;border-radius:var(--r-sm);overflow:hidden;border:.5px solid var(--line-strong)}
.step-visual img{width:100%;display:block;transition:transform .4s var(--ease)}
.step-visual:hover img{transform:scale(1.02)}
.work-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:40px;align-items:center}
.work-visual{display:block;border-radius:var(--r-sm);overflow:hidden;border:.5px solid var(--line-strong)}
.work-visual img{width:100%;display:block;transition:transform .4s var(--ease)}
.work-visual:hover img{transform:scale(1.02)}
.shift-banner .sb-sub{font-size:14px;color:var(--tx-2);line-height:1.9;margin-top:14px}
.concept-lead{font-size:clamp(16px,2.4vw,19px);line-height:1.9;font-weight:500;margin-bottom:28px;max-width:680px}
.concept-body{font-size:14px;color:var(--tx-2);line-height:2.1;max-width:680px}
.hero-img{position:relative;width:100%;height:clamp(240px,38vw,480px);border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden;margin:0}
.hero-img img{width:100%;height:100%;object-fit:cover;object-position:center 60%;display:block}
.hero-cap{position:absolute;left:20px;bottom:16px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;color:#fff;background:rgba(20,22,31,.55);padding:6px 12px;border-radius:6px}
.layers{display:flex;flex-direction:column;gap:16px}
.layer{display:grid;grid-template-columns:200px 1fr;gap:28px;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden}
.layer-img{height:160px}
.layer-body{padding:24px 28px 24px 0;display:flex;flex-direction:column;justify-content:center}
.layers.noimg .layer{grid-template-columns:1fr}
.layers.noimg .layer-body{padding:26px 28px}
.layer-no{font-size:10px;color:var(--indigo-light);font-family:var(--mono);letter-spacing:.1em;margin-bottom:8px}
.layer-ttl{font-size:16px;font-weight:600;margin-bottom:8px}
.layer-desc{font-size:14px;color:var(--tx-2);line-height:1.85}
.exp-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.exp-card{border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:24px}
.exp-ttl{font-size:14px;font-weight:600;margin-bottom:10px}
.exp-desc{font-size:14px;color:var(--tx-2);line-height:1.8}
.who-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.who-card{border:.5px solid var(--line-strong);border-radius:var(--r-md);padding:24px 26px}
.who-seg{font-size:10px;color:var(--indigo-light);font-family:var(--mono);letter-spacing:.08em;margin-bottom:10px}
.who-ttl{font-size:14px;font-weight:600;margin-bottom:8px;line-height:1.6}
.who-desc{font-size:14px;color:var(--tx-2);line-height:1.8}
.conn{background:linear-gradient(180deg,rgba(108,124,224,.07),rgba(108,124,224,0) 55%);border:.5px solid rgba(108,124,224,.2);border-radius:var(--r-md);padding:44px 48px}
.conn-en{font-size:10px;letter-spacing:.2em;color:var(--indigo-light);font-family:var(--mono);margin-bottom:18px}
.conn-ttl{font-size:18px;font-weight:600;line-height:1.6;margin-bottom:18px}
.conn-body{font-size:14px;color:var(--tx-2);line-height:2}
.conn-body p{margin-bottom:16px}
.conn-body p:last-child{margin-bottom:0}
.conn-body .conn-kick{margin-top:26px;padding-left:18px;border-left:3px solid var(--indigo);font-size:16px;font-weight:600;color:var(--tx-1);line-height:1.8}
.conn-body .conn-kick .ln{display:block;font-size:14px;font-weight:400;color:var(--tx-2);margin-top:6px}
.ext{text-align:center;padding:80px var(--pad-x)}
.ext-en{font-size:10px;letter-spacing:.2em;color:var(--tx-4);font-family:var(--mono);margin-bottom:18px}
.ext-ttl{font-size:clamp(22px,3.5vw,26px);font-weight:600;margin-bottom:18px;line-height:1.5}
.ext-body{font-size:14px;color:var(--tx-2);line-height:1.9;margin-bottom:32px}
.ext-sub{margin-top:16px;font-size:11px;color:var(--tx-4);font-family:var(--mono);letter-spacing:.04em}

/* BASE 03 — SES */

/* ============================================================
   responsive — mobile (<=768px)
   ============================================================ */
/* ============ footer ============ */
#ftr{border-top:.5px solid var(--line);padding:56px var(--pad-x) 40px;background:var(--bg)}
.ftr-top{display:flex;justify-content:space-between;align-items:flex-start;gap:40px;flex-wrap:wrap;margin-bottom:36px}
.ftr-logo{display:flex;align-items:center;cursor:pointer;color:inherit}
.ftr-logo img{height:18px;width:auto}
.ftr-tagline{font-size:13px;color:var(--tx-3);margin-top:10px;letter-spacing:.04em}
.ftr-nav{display:flex;flex-wrap:wrap;gap:14px 26px}
.ftr-nav a{font-size:11px;color:var(--tx-2);letter-spacing:.1em;font-family:var(--mono);cursor:pointer;transition:color .2s}
.ftr-nav a:hover{color:var(--tx)}
.ftr-bottom{display:flex;justify-content:center;align-items:center;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:.5px solid var(--line)}
.ftr-copy,.ftr-note{font-size:11px;color:var(--tx-4);letter-spacing:.06em;font-family:var(--mono)}

/* ============ legal (privacy policy) ============ */
.legal{max-width:820px;margin:0 auto}
.legal-intro{font-size:14px;color:var(--tx-2);line-height:2;margin-bottom:40px}
.legal-block{margin-bottom:36px}
.legal-h{font-size:16px;font-weight:600;letter-spacing:.02em;margin-bottom:12px;padding-left:14px;position:relative;line-height:1.6}
.legal-h::before{content:"";position:absolute;left:0;top:.25em;bottom:.25em;width:3px;border-radius:2px;background:var(--indigo)}
.legal-p{font-size:14px;color:var(--tx-2);line-height:2}
.legal-list{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:8px}
.legal-list li{font-size:14px;color:var(--tx-2);line-height:1.8;padding-left:20px;position:relative}
.legal-list li::before{content:"";position:absolute;left:4px;top:.65em;width:5px;height:5px;border-radius:50%;background:var(--indigo-light)}
.legal-info{margin-top:16px;border:.5px solid var(--line-strong);border-radius:var(--r-md);overflow:hidden}
.legal-info .prow{padding:18px 24px}
.legal-link{color:var(--indigo-light);border-bottom:.5px solid var(--indigo-dim);cursor:pointer}
.legal-date{margin-top:40px;font-size:13px;color:var(--tx-3);font-family:var(--mono);letter-spacing:.06em}

@media (max-width:768px){
  :root{--pad-x:24px}
  #hdr{padding:16px 24px}
  .hdr-nav{display:none}
  body{padding-bottom:64px}
  #bnav{display:flex}
  #ftr{padding:44px 24px 32px;text-align:center}
  .ftr-top{flex-direction:column;align-items:center;gap:28px}
  .ftr-logo{justify-content:center}
  .ftr-nav{justify-content:center;gap:14px 22px}
  .ftr-bottom{flex-direction:column;align-items:center;gap:10px}
  .legal-info .prow{grid-template-columns:1fr;gap:6px;padding:16px 20px}
  .sec{padding:56px var(--pad-x)}
  .contact{padding:64px var(--pad-x)}
  .hero{padding-bottom:32px}
  .hero-bg-label{top:38%}
  .about-2col{grid-template-columns:1fr;gap:28px;margin-top:32px}
  .about-2col.nophoto{grid-template-columns:1fr;gap:22px}
  .about-2col.nophoto .about-lead{font-size:26px;line-height:1.6}
      .about-photo{height:260px}
  .about-body{max-width:none}
  .sec-head-full .sec-h{font-size:24px}
  .about-lead{padding-left:16px}
  .proj-card{flex-basis:92%;grid-template-columns:1fr}
  .proj-visual{height:200px}
  .proj-cbody{padding:32px 28px}
  .proj-ctitle{font-size:22px}
  .phi-grid{grid-template-columns:1fr}
  .phi-item{padding:26px 24px}
  .phi-arrow{padding:12px 0;transform:rotate(90deg)}
  .ppl-card{flex-basis:180px}
  .phi-lead{padding-left:16px}
  .phi-cycle{padding:104px 12px}
  .phi-orbit{width:250px;height:250px}
  .orbit-label{font-size:10px}
  .hdr-logo img{height:14px}
  .contact-tags{flex-direction:column}
  .ctag{width:100%}
  .frow{grid-template-columns:1fr;gap:16px}
  .phero{padding:96px 24px 48px}
  .phero-top{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .phero.has-visual{grid-template-columns:1fr;gap:28px}
  .sec-h br,.phero-ttl br,.ccta-ttl br,.conn-ttl br{display:none}
  .conn.work .step-link{display:flex;width:fit-content;margin-left:auto;margin-right:auto}
  .mvv-values-wrap{grid-template-columns:1fr}
  .mvv-ring{margin-top:8px}
  .brand-grid{grid-template-columns:1fr}
  .brand-credit{justify-content:flex-start}
  .brand-visual{height:180px;padding:28px}
  .work-grid{grid-template-columns:1fr;gap:22px}
  .shift-row{flex-direction:column;align-items:flex-start;gap:4px}
  .shift-row .w{width:auto}
  .place-grid{grid-template-columns:1fr 1fr;grid-template-rows:170px 170px 170px;gap:10px}
  .place-grid figure.tall{grid-row:1/3}
  .intro-2col{grid-template-columns:1fr;gap:24px}
  .intro-lead{padding-left:16px}
  .story-cards{grid-template-columns:1fr;gap:16px}
  .story-card{padding:26px 24px}
  .mvv-item{grid-template-columns:1fr;gap:14px;padding:28px 0}
  .mvv-val{flex-direction:column;gap:6px}
  .mvv-val-n{min-width:0}
  .msg{grid-template-columns:1fr;gap:24px}
  .msg-photo{width:100%;max-width:360px;margin:0 auto}
  .prow{grid-template-columns:1fr;gap:8px;padding:16px 20px}
  .prob-grid{grid-template-columns:1fr}
  .roles-grid{grid-template-columns:1fr}
  .layer{grid-template-columns:1fr;gap:0}
  .layer-body{padding:22px 26px}
  .exp-grid{grid-template-columns:1fr}
  .who-grid{grid-template-columns:1fr}
  .conn,.shift-banner{padding:32px 28px}
  .step{gap:18px;grid-template-columns:44px 1fr}
  .step-body{padding:22px 24px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--indigo);outline-offset:2px;border-radius:4px}

/* CONTACT 送信完了状態：注意書きを隠し、完了メッセージを強調 */
.cform.is-sent .cform-note{display:none}
.cform.is-sent .cform-status{font-size:16px;font-weight:600;padding:14px 18px;background:rgba(108,124,224,.08);border-radius:10px}