/* ===================================================================
   白嶺精密板金株式会社 — ショーケースHP
   KIGAKU Web Design / 2026-06-01
   依存ゼロ / IntersectionObserver + CSS / prefers-reduced-motion対応
   =================================================================== */

:root{
  --bg:#0a0f1a; --bg2:#111a2e; --surface:#1c2638; --surface2:#243149;
  --silver:#c8cfd8; --silver-2:#9aa7b8;
  --white:#eef2f7; --gray:#9aa7b8; --gray-d:#6c7b90;
  --spark:#ff6a1a; --spark-2:#ff8c45; --steel:#3b82c4; --steel-2:#5fa3de;
  --light:#f4f6f9; --light-2:#e9eef4; --ink:#0a0f1a; --ink-sub:#445064;
  --line:#d9e0ea; --line-dark:rgba(255,255,255,.12);
  --maxw:1160px;
  --sans:"Noto Sans JP",system-ui,-apple-system,sans-serif;
  --disp:"Zen Kaku Gothic New",var(--sans);
  --mono:"Archivo","Inter",system-ui,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 24px 60px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--white);font-family:var(--sans);line-height:1.9;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

.ribbon{background:#000;color:#e7c98a;font-size:11.5px;text-align:center;padding:7px 14px;letter-spacing:.04em;border-bottom:1px solid rgba(231,201,138,.25)}

/* ============ HEADER ============ */
.hd{position:fixed;top:0;left:0;right:0;z-index:60;transition:background .4s var(--ease),box-shadow .4s var(--ease),border-color .4s;border-bottom:1px solid transparent}
.hd.scrolled{background:rgba(10,15,26,.82);backdrop-filter:blur(14px) saturate(1.2);border-bottom-color:var(--line-dark);box-shadow:0 6px 30px rgba(0,0,0,.3)}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:13px;min-width:0}
.brand .mk{width:42px;height:42px;border-radius:9px;flex:0 0 auto;background:linear-gradient(140deg,#2b3a55,#0f1726);border:1px solid rgba(200,207,216,.35);display:grid;place-items:center;position:relative;overflow:hidden}
.brand .mk svg{width:24px;height:24px}
.brand b{font-family:var(--disp);font-weight:900;font-size:18px;letter-spacing:.04em;line-height:1.1;display:block}
.brand small{display:block;font-size:10.5px;color:var(--gray);letter-spacing:.18em;font-weight:500}
.gnav{display:flex;gap:30px;align-items:center}
.gnav a.lnk{font-size:13.5px;color:var(--white);font-weight:500;letter-spacing:.03em;position:relative;padding:4px 0}
.gnav a.lnk::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--spark);transition:width .3s var(--ease)}
.gnav a.lnk:hover::after{width:100%}
.cta-top{background:linear-gradient(135deg,var(--spark),var(--spark-2));color:#fff;border-radius:30px;padding:11px 24px;font-weight:700;font-size:13.5px;box-shadow:0 8px 22px rgba(255,106,26,.35);transition:transform .25s var(--ease),box-shadow .25s}
.cta-top:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,106,26,.5)}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-dark);border-radius:10px;background:rgba(255,255,255,.04);position:relative}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--white);transition:.3s var(--ease)}
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:27px}
body.menu-open .burger span:nth-child(1){top:21px;transform:rotate(45deg)}
body.menu-open .burger span:nth-child(2){opacity:0}
body.menu-open .burger span:nth-child(3){top:21px;transform:rotate(-45deg)}

.drawer{position:fixed;inset:0;z-index:55;background:rgba(8,12,20,.97);backdrop-filter:blur(8px);display:flex;flex-direction:column;justify-content:center;gap:8px;padding:0 40px;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
body.menu-open .drawer{opacity:1;visibility:visible}
.drawer a{font-family:var(--disp);font-size:24px;font-weight:700;padding:14px 0;border-bottom:1px solid var(--line-dark)}
.drawer a.dcta{color:var(--spark);border-bottom:none;margin-top:18px}

/* ============ HERO ============ */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;overflow:hidden;background:radial-gradient(140% 100% at 70% 0%,#16213a 0%,#0a0f1a 60%)}
.hero .grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(91,163,222,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(91,163,222,.10) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(120% 90% at 70% 25%,#000 0%,transparent 75%);-webkit-mask-image:radial-gradient(120% 90% at 70% 25%,#000 0%,transparent 75%);opacity:0;transform:translateY(30px);animation:gridIn 1.1s var(--ease) .2s forwards}
@keyframes gridIn{to{opacity:1;transform:translateY(0)}}
.hero .glow{position:absolute;width:60vw;height:60vw;max-width:760px;max-height:760px;right:-8vw;top:-12vw;background:radial-gradient(circle,rgba(59,130,196,.22) 0%,transparent 65%);filter:blur(20px);pointer-events:none}
.hero .spark-glow{position:absolute;width:30vw;height:30vw;max-width:420px;max-height:420px;left:40%;bottom:-6vw;background:radial-gradient(circle,rgba(255,106,26,.14) 0%,transparent 68%);filter:blur(10px);pointer-events:none}
.hero .wrap{position:relative;z-index:3;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding-top:90px;padding-bottom:60px}
.hero .eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.3em;color:var(--steel-2);font-weight:600;margin:0 0 22px;display:flex;align-items:center;gap:12px}
.hero .eyebrow::before{content:"";width:34px;height:1px;background:var(--steel-2)}
.hero h1{font-family:var(--disp);font-weight:900;font-size:clamp(34px,6vw,68px);line-height:1.28;margin:0 0 26px;letter-spacing:.01em}
.hero h1 .hl{color:transparent;background:linear-gradient(120deg,var(--silver),#fff 50%,var(--silver));-webkit-background-clip:text;background-clip:text}
.hero h1 .sp{color:var(--spark)}
.reveal-line{display:block;overflow:hidden}
.reveal-line>span{display:block;transform:translateY(110%);opacity:0;animation:lineUp .9s var(--ease) forwards}
.reveal-line:nth-child(1)>span{animation-delay:.45s}
.reveal-line:nth-child(2)>span{animation-delay:.62s}
.reveal-line:nth-child(3)>span{animation-delay:.79s}
@keyframes lineUp{to{transform:translateY(0);opacity:1}}
.hero p.lead{font-size:clamp(15px,1.6vw,17.5px);color:var(--gray);max-width:30em;margin:0 0 34px;opacity:0;animation:fadeIn 1s var(--ease) 1s forwards}
@keyframes fadeIn{to{opacity:1}}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap;opacity:0;animation:fadeIn 1s var(--ease) 1.15s forwards}
.btn{display:inline-flex;align-items:center;gap:9px;border-radius:32px;padding:15px 30px;font-weight:700;font-size:15px;transition:transform .25s var(--ease),box-shadow .25s,background .25s}
.btn.primary{background:linear-gradient(135deg,var(--spark),var(--spark-2));color:#fff;box-shadow:0 12px 30px rgba(255,106,26,.4)}
.btn.primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(255,106,26,.55)}
.btn.ghost{border:1.5px solid rgba(200,207,216,.5);color:var(--white)}
.btn.ghost:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.btn svg{width:17px;height:17px}
.hero-visual{position:relative;justify-self:center;width:100%;max-width:440px;aspect-ratio:1/1;opacity:0;animation:fadeIn 1.2s var(--ease) .8s forwards}
.hero-visual svg{width:100%;height:100%;overflow:visible}
.plate-shine{transform-origin:center}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:4;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--gray);font-family:var(--mono);font-size:10.5px;letter-spacing:.25em;opacity:0;animation:fadeIn 1s 1.6s forwards}
.scroll-cue .mouse{width:24px;height:38px;border:1.5px solid var(--gray-d);border-radius:13px;position:relative}
.scroll-cue .mouse::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:var(--spark);transform:translateX(-50%);animation:wheel 1.6s var(--ease) infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}70%{opacity:1}100%{opacity:0;transform:translate(-50%,12px)}}
.hero-strip{position:relative;z-index:3;border-top:1px solid var(--line-dark);background:rgba(10,15,26,.5)}
.hero-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0}
.hero-strip .it{padding:22px 18px;text-align:center;border-right:1px solid var(--line-dark)}
.hero-strip .it:last-child{border-right:none}
.hero-strip b{display:block;font-family:var(--mono);font-weight:700;font-size:clamp(18px,2.4vw,26px);color:var(--white)}
.hero-strip span{font-size:11.5px;color:var(--gray);letter-spacing:.05em}

/* ============ generic section ============ */
section{position:relative}
.sec-pad{padding:clamp(72px,11vh,128px) 0}
.kick{font-family:var(--mono);font-size:12px;letter-spacing:.28em;font-weight:600;color:var(--steel-2);margin:0 0 14px;display:inline-flex;align-items:center;gap:11px}
.kick::before{content:"";width:26px;height:1px;background:var(--spark)}
.kick.center{justify-content:center}
h2.sec{font-family:var(--disp);font-weight:900;font-size:clamp(27px,4.2vw,46px);line-height:1.32;margin:0 0 18px;letter-spacing:.01em}
.sec-lead{color:var(--gray);max-width:42em;margin:0 0 8px;font-size:clamp(14.5px,1.5vw,16.5px)}
.center{text-align:center}
.center .sec-lead{margin-left:auto;margin-right:auto}

.r{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.r.in{opacity:1;transform:none}
.r.d1{transition-delay:.08s}.r.d2{transition-delay:.16s}.r.d3{transition-delay:.24s}.r.d4{transition-delay:.32s}

/* ============ PROCESS (star) ============ */
.process{background:linear-gradient(180deg,#0a0f1a,#0c1422 50%,#0a0f1a)}
.process .head{text-align:center;max-width:720px;margin:0 auto clamp(20px,4vh,40px)}
.proc-stage{position:relative}
.proc-sticky{position:sticky;top:0;height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}
.proc-canvas{position:relative;width:min(86vw,560px);aspect-ratio:1/1}
.proc-canvas svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.proc-rail{position:absolute;left:50%;bottom:7vh;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.proc-rail .dot{width:38px;height:4px;border-radius:3px;background:rgba(200,207,216,.22);transition:background .4s var(--ease)}
.proc-rail .dot.on{background:var(--spark)}
.proc-caption{position:absolute;left:0;right:0;bottom:13vh;text-align:center;z-index:5;pointer-events:none}
.proc-caption .step-no{font-family:var(--mono);font-size:12px;letter-spacing:.3em;color:var(--spark);font-weight:600}
.proc-caption h3{font-family:var(--disp);font-weight:900;font-size:clamp(22px,3.6vw,38px);margin:6px 0 8px}
.proc-caption p{color:var(--gray);font-size:14.5px;max-width:30em;margin:0 auto}
.proc-cap-item{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease);position:absolute;left:0;right:0}
.proc-cap-item.on{opacity:1;transform:none;position:relative}
.proc-layer{opacity:0;transition:opacity .6s var(--ease),transform .6s var(--ease)}
.proc-layer.on{opacity:1}
.proc-cards{display:none}
.proc-card{background:var(--surface);border:1px solid var(--line-dark);border-radius:18px;padding:26px 22px;margin-bottom:18px}
.proc-card .pc-svg{width:100%;height:180px;margin-bottom:16px}
.proc-card .step-no{font-family:var(--mono);font-size:11.5px;letter-spacing:.28em;color:var(--spark);font-weight:600}
.proc-card h3{font-family:var(--disp);font-weight:900;font-size:21px;margin:6px 0 8px}
.proc-card p{color:var(--gray);font-size:14px;margin:0}

/* ============ STRENGTHS ============ */
.light-sec{background:var(--light);color:var(--ink)}
.light-sec .kick{color:var(--steel)}
.light-sec .sec-lead{color:var(--ink-sub)}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.pillar{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px 28px;transition:transform .3s var(--ease),box-shadow .3s var(--ease);position:relative;overflow:hidden}
.pillar::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--spark),var(--spark-2));transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease)}
.pillar:hover{transform:translateY(-6px);box-shadow:0 24px 50px rgba(10,15,26,.1)}
.pillar:hover::before{transform:scaleX(1)}
.pillar .ic{width:60px;height:60px;border-radius:14px;background:linear-gradient(140deg,#eef3fb,#dde8f6);display:grid;place-items:center;margin-bottom:20px}
.pillar .ic svg{width:32px;height:32px;color:var(--steel)}
.pillar .pn{font-family:var(--mono);font-size:12px;color:var(--spark);font-weight:700;letter-spacing:.1em}
.pillar h3{font-family:var(--disp);font-weight:900;font-size:21px;margin:6px 0 12px}
.pillar p{color:var(--ink-sub);font-size:14.5px;margin:0}

/* ============ EQUIPMENT ============ */
.equip{background:var(--bg2)}
.equip-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;margin-top:46px}
.spec-list{display:grid;gap:0}
.spec-row{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:baseline;padding:20px 0;border-bottom:1px solid var(--line-dark)}
.spec-row:first-child{border-top:1px solid var(--line-dark)}
.spec-row .sl{font-size:14px;color:var(--gray);min-width:9em}
.spec-row .sv{font-family:var(--mono);font-weight:700;font-size:clamp(22px,3vw,34px);color:var(--white);text-align:right}
.spec-row .su{font-size:13px;color:var(--silver-2)}
.equip-visual{background:var(--surface);border:1px solid var(--line-dark);border-radius:20px;padding:30px;position:relative;overflow:hidden}
.equip-visual h4{font-family:var(--disp);font-size:16px;margin:0 0 18px;color:var(--silver)}
.machine-list{display:flex;flex-direction:column;gap:14px}
.machine{display:flex;align-items:center;gap:14px;padding:14px 16px;background:rgba(255,255,255,.03);border:1px solid var(--line-dark);border-radius:12px}
.machine .mi{width:40px;height:40px;border-radius:9px;background:rgba(59,130,196,.14);display:grid;place-items:center;flex:0 0 auto}
.machine .mi svg{width:22px;height:22px;color:var(--steel-2)}
.machine b{display:block;font-size:14.5px;font-weight:700}
.machine span{display:block;font-size:12px;color:var(--gray)}

/* ============ FIELDS ============ */
.fields{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:46px}
.field{position:relative;border-radius:18px;overflow:hidden;aspect-ratio:4/3;background:var(--surface);border:1px solid var(--line)}
.field .fbg{position:absolute;inset:0;background-size:cover;background-position:center;transition:transform .6s var(--ease);filter:saturate(.9)}
.field:hover .fbg{transform:scale(1.07)}
.field .fov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,26,.1) 0%,rgba(10,15,26,.85) 100%)}
.field .ft{position:absolute;left:0;right:0;bottom:0;padding:24px 22px;z-index:2}
.field .ft .fn{font-family:var(--mono);font-size:11px;color:var(--spark-2);letter-spacing:.15em;font-weight:700}
.field .ft h3{font-family:var(--disp);font-weight:900;font-size:20px;margin:5px 0 6px;color:#fff}
.field .ft p{font-size:13px;color:rgba(238,242,247,.82);margin:0}

/* ============ NUMBERS ============ */
.numbers{background:linear-gradient(135deg,#0d1830,#0a0f1a);position:relative;overflow:hidden}
.numbers::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(91,163,222,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(91,163,222,.06) 1px,transparent 1px);background-size:54px 54px;mask-image:radial-gradient(90% 90% at 50% 50%,#000,transparent);-webkit-mask-image:radial-gradient(90% 90% at 50% 50%,#000,transparent)}
.num-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:50px;position:relative;z-index:2}
.num{text-align:center;padding:20px 12px}
.num .nv{font-family:var(--mono);font-weight:700;font-size:clamp(38px,6vw,76px);line-height:1;color:transparent;background:linear-gradient(160deg,#fff,var(--silver-2));-webkit-background-clip:text;background-clip:text;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.num .nv .u{font-size:.42em;color:var(--spark);-webkit-text-fill-color:var(--spark);margin-left:3px}
.num .nl{font-size:13px;color:var(--gray);margin-top:12px;letter-spacing:.04em}

/* ============ REASONS ============ */
.reasons-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:46px}
.reason{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 24px;align-items:flex-start;transition:box-shadow .3s var(--ease)}
.reason:hover{box-shadow:0 18px 40px rgba(10,15,26,.08)}
.reason .rn{font-family:var(--mono);font-weight:700;font-size:30px;color:var(--line);flex:0 0 auto;line-height:1;width:1.4em}
.reason .rc h3{font-family:var(--disp);font-weight:900;font-size:18px;margin:0 0 8px}
.reason .rc p{color:var(--ink-sub);font-size:14px;margin:0}
.badges{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:42px}
.badge{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:11px 22px;font-size:13.5px;font-weight:700;color:var(--ink-sub)}
.badge svg{width:18px;height:18px;color:var(--steel)}

/* ============ FLOW ============ */
.flow{background:var(--bg2)}
.flow-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:50px;position:relative}
.fstep{text-align:center;padding:0 14px;position:relative}
.fstep::after{content:"";position:absolute;right:-1px;top:30px;width:100%;height:2px;background:repeating-linear-gradient(90deg,var(--line-dark) 0 6px,transparent 6px 12px);z-index:0}
.fstep:last-child::after{display:none}
.fstep .fnum{width:62px;height:62px;margin:0 auto 18px;border-radius:50%;background:var(--surface);border:1.5px solid var(--steel);color:var(--steel-2);display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:22px;position:relative;z-index:2}
.fstep h3{font-family:var(--disp);font-weight:700;font-size:16px;margin:0 0 8px}
.fstep p{font-size:12.5px;color:var(--gray);margin:0}

/* ============ CONTACT ============ */
.contact{background:linear-gradient(135deg,#0d1830,#0a0f1a)}
.contact-band{background:linear-gradient(135deg,var(--spark),var(--spark-2));border-radius:24px;padding:clamp(32px,5vw,56px);text-align:center;margin-bottom:54px;position:relative;overflow:hidden}
.contact-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);background-size:34px 34px;opacity:.5}
.contact-band h2{font-family:var(--disp);font-weight:900;font-size:clamp(24px,3.6vw,40px);margin:0 0 12px;color:#fff;position:relative}
.contact-band p{color:rgba(255,255,255,.92);margin:0 0 28px;position:relative;font-size:15px}
.contact-band .btn.white{background:#fff;color:var(--spark);position:relative;box-shadow:0 14px 34px rgba(0,0,0,.2)}
.contact-band .btn.white:hover{transform:translateY(-3px)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:46px;align-items:start}
.contact-info h3{font-family:var(--disp);font-weight:900;font-size:24px;margin:0 0 8px}
.contact-info .ci-lead{color:var(--gray);margin:0 0 28px;font-size:14.5px}
.ci-row{display:flex;gap:15px;align-items:flex-start;padding:18px 0;border-bottom:1px solid var(--line-dark)}
.ci-row .ci-ic{width:42px;height:42px;border-radius:10px;background:rgba(59,130,196,.14);display:grid;place-items:center;flex:0 0 auto}
.ci-row .ci-ic svg{width:21px;height:21px;color:var(--steel-2)}
.ci-row .cl{font-size:12px;color:var(--gray);letter-spacing:.05em}
.ci-row .cv{font-family:var(--mono);font-weight:700;font-size:19px;color:var(--white)}
.ci-row .cv.sm{font-size:15px;font-family:var(--sans)}
.form{background:var(--surface);border:1px solid var(--line-dark);border-radius:20px;padding:clamp(26px,3vw,38px)}
.fg{margin-bottom:18px}
.fg label{display:block;font-size:13px;color:var(--silver);margin-bottom:8px;font-weight:500}
.fg label .req{color:var(--spark);font-size:11px;margin-left:6px}
.fg input,.fg textarea,.fg select{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line-dark);border-radius:11px;padding:14px 16px;color:var(--white);font-family:inherit;font-size:15px;transition:border-color .25s,background .25s}
.fg input:focus,.fg textarea:focus,.fg select:focus{outline:none;border-color:var(--spark);background:rgba(255,255,255,.07)}
.fg input::placeholder,.fg textarea::placeholder{color:var(--gray-d)}
.fg textarea{resize:vertical;min-height:120px}
.fg.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fg.two>div{margin:0}
.form .note{font-size:12px;color:var(--gray);margin:6px 0 18px}
.form .btn.primary{width:100%;justify-content:center;font-size:16px;padding:17px}
.form-msg{display:none;text-align:center;padding:14px;border-radius:11px;background:rgba(59,130,196,.14);color:var(--steel-2);font-size:14px;margin-top:14px}
.form-msg.show{display:block}

/* ============ FOOTER ============ */
.ft-main{background:#070b13;padding:64px 0 0}
.ft-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid var(--line-dark)}
.ft-brand .brand{margin-bottom:18px}
.ft-brand p{color:var(--gray);font-size:13.5px;max-width:26em;margin:0}
.ft-col h4{font-family:var(--disp);font-size:14px;margin:0 0 18px;color:var(--silver)}
.ft-col a{display:block;color:var(--gray);font-size:13.5px;padding:7px 0;transition:color .2s}
.ft-col a:hover{color:var(--spark-2)}
.ft-bottom{padding:24px 0;text-align:center;color:var(--gray-d);font-size:12px}
.ft-bottom .kg{color:var(--silver-2)}

/* ============ mobile sticky bar ============ */
.m-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:58;grid-template-columns:1fr 1fr;background:rgba(10,15,26,.96);backdrop-filter:blur(10px);border-top:1px solid var(--line-dark)}
.m-bar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:15px 8px;font-weight:700;font-size:14px}
.m-bar a.tel{color:var(--white);border-right:1px solid var(--line-dark)}
.m-bar a.mail{color:var(--spark)}
.m-bar svg{width:18px;height:18px}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .gnav{display:none}
  .burger{display:block}
  .hero .wrap{grid-template-columns:1fr;gap:30px;text-align:left}
  .hero-visual{max-width:320px;grid-row:1}
  .equip-grid{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .pillars,.fields{grid-template-columns:1fr 1fr}
  .num-grid{grid-template-columns:1fr 1fr;gap:14px}
  .reasons-grid{grid-template-columns:1fr}
  .flow-steps{grid-template-columns:1fr 1fr 1fr;gap:28px 10px}
  .fstep::after{display:none}
}
@media (max-width:640px){
  .wrap{padding:0 18px}
  .hero-strip .wrap{grid-template-columns:1fr 1fr}
  .hero-strip .it:nth-child(2){border-right:none}
  .hero-strip .it{border-bottom:1px solid var(--line-dark)}
  .pillars,.fields{grid-template-columns:1fr}
  .flow-steps{grid-template-columns:1fr 1fr}
  .fg.two{grid-template-columns:1fr}
  .m-bar{display:grid}
  .ft-top{grid-template-columns:1fr;gap:30px}
  body{padding-bottom:54px}
  .proc-stage{display:none}
  .proc-cards{display:block;margin-top:30px}
  .num .nv{font-size:clamp(34px,11vw,52px)}
}

/* ============ SVG process animations ============ */
.plate-shine{animation:plateShine 4s var(--ease) infinite}
@keyframes plateShine{0%{transform:translateX(0)}55%{transform:translateX(560px)}100%{transform:translateX(560px)}}
.proc-layer .sparks circle{animation:sparkFly .9s ease-out infinite;transform-origin:center}
.proc-layer .sparks circle:nth-child(2){animation-delay:.15s}
.proc-layer .sparks circle:nth-child(3){animation-delay:.3s}
.proc-layer .sparks circle:nth-child(4){animation-delay:.45s}
.proc-layer .sparks circle:nth-child(5){animation-delay:.6s}
@keyframes sparkFly{0%{opacity:0;transform:translate(0,0) scale(.6)}20%{opacity:1}100%{opacity:0;transform:translate(6px,14px) scale(.2)}}
.spark-pt{animation:sparkPulse 1.1s ease-in-out infinite}
@keyframes sparkPulse{0%,100%{opacity:.5}50%{opacity:1}}
.weld-arc{animation:weldFlicker .6s ease-in-out infinite}
@keyframes weldFlicker{0%,100%{opacity:.55}50%{opacity:1}}

/* ============ REAL PHOTOS (hybrid 実写) ============ */
.hero-photo{position:absolute;inset:0;background:url("real-01.jpg") center 38%/cover no-repeat;opacity:0;filter:grayscale(.45) brightness(.5) contrast(1.08);animation:heroPhotoIn 1.6s var(--ease) .15s forwards}
.hero-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,15,26,.55) 0%,rgba(10,15,26,.35) 45%,rgba(10,15,26,.95) 100%)}
@keyframes heroPhotoIn{to{opacity:.36}}

.photo-band{position:relative;margin:0;overflow:hidden;min-height:360px;height:54vh;max-height:600px;display:flex;align-items:center}
.photo-band img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.05)}
.band-weld img{object-position:center 32%}
.band-factory img{object-position:center 28%}
.photo-band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,15,26,.92) 0%,rgba(10,15,26,.55) 48%,rgba(10,15,26,.28) 100%);z-index:1}
.photo-band::after{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--line-dark);z-index:2}
.photo-band figcaption{position:relative;z-index:2;width:100%}
.pb-kick{font-family:var(--mono);font-size:12px;letter-spacing:.28em;font-weight:600;color:var(--spark-2);display:inline-flex;align-items:center;gap:11px}
.pb-kick::before{content:"";width:26px;height:1px;background:var(--spark)}
.pb-copy{font-family:var(--disp);font-weight:900;font-size:clamp(23px,3.4vw,38px);line-height:1.4;margin:10px 0 10px;color:#fff;text-shadow:0 2px 18px rgba(0,0,0,.5)}
.pb-note{color:var(--silver);font-size:14px;margin:0;max-width:36em}
.pb-note small{display:block;color:var(--gray);opacity:.75;font-size:11.5px;margin-top:8px}

.equip-photos{display:grid;grid-template-columns:1.45fr 1fr;gap:22px;margin-top:26px}
.ephoto{margin:0;background:var(--surface);border:1px solid var(--line-dark);border-radius:18px;overflow:hidden;display:flex;flex-direction:column}
.ephoto img{width:100%;height:300px;object-fit:cover;filter:saturate(.85)}
.ephoto figcaption{padding:16px 20px 18px;font-size:13px;color:var(--gray);line-height:1.85}
.ephoto figcaption small{display:block;color:var(--gray-d);font-size:11px;margin-top:5px}

/* ============ NEWS ============ */
.news{background:var(--bg)}
.news-list{list-style:none;margin:22px 0 0;padding:0;border-top:1px solid var(--line-dark)}
.news-list li{display:flex;gap:18px;align-items:baseline;padding:18px 4px;border-bottom:1px solid var(--line-dark);flex-wrap:wrap}
.news-list time{font-family:var(--mono);font-size:13px;color:var(--steel-2);flex:0 0 auto}
.news-list .ntag{font-size:11px;border:1px solid var(--line-dark);border-radius:20px;padding:2px 12px;color:var(--gray);flex:0 0 auto;letter-spacing:.06em}
.news-list a{color:var(--silver);font-size:14px;flex:1 1 24em;min-width:0;cursor:default}

@media (max-width:960px){
  .equip-photos{grid-template-columns:1fr}
  .ephoto img{height:240px}
}
@media (max-width:640px){
  .photo-band{height:auto;min-height:0;padding:56px 0}
  .photo-band::before{background:linear-gradient(180deg,rgba(10,15,26,.72) 0%,rgba(10,15,26,.5) 100%)}
  .band-weld img{object-position:72% 40%;filter:saturate(.9) contrast(1.02) brightness(1.45)}
  .band-factory img{object-position:48% 28%}
  .news-list li{gap:10px 12px}
  .hero-photo{background-position:62% 38%}
}

/* ============ reduce motion ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal-line>span{transform:none;opacity:1}
  .r{opacity:1;transform:none}
  .hero .grid-bg,.hero p.lead,.hero .btns,.hero-visual,.scroll-cue{opacity:1;animation:none}
  .proc-layer{opacity:1}
}