:root{
  --ink:#27313f;
  --navy:#0a2a5e;        /* deep brand blue — headings/text */
  --navy-2:#103e86;
  --navy-3:#1456b0;
  --blue:#1573e6;        /* brand bright — accent / CTA */
  --blue-2:#2b8fe6;
  --blue-soft:#e9f2fd;   /* pale blue tint */
  --blue-light:#8fc4ff;  /* accent on dark */
  --muted:#6e7480;
  --line:#e3e8ef;
  --paper:#ffffff;
  --paper-alt:#f3f7fc;
  --gold:#c08a2e;
  --serif:"Noto Serif JP",serif;
  --sans:"Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --wrap:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.9;-webkit-font-smoothing:antialiased}
::selection{background:var(--blue);color:#fff}
.container{max-width:var(--wrap);margin:0 auto;padding:0 28px}
strong{font-weight:700;color:inherit}
.accent{color:var(--blue)}
a{color:inherit}

/* reveal */
.js .section,.js .case,.js .band,.js .contact{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.js .section.in,.js .case.in,.js .band.in,.js .contact.in{opacity:1;transform:none}

/* ===== Buttons ===== */
.btn{display:inline-block;text-decoration:none;font-weight:700;letter-spacing:.04em;border-radius:3px;transition:transform .2s,box-shadow .2s,background .2s,color .2s;font-size:.98rem;padding:15px 34px}
.btn-primary{background:#ffffff;color:#0e44a0;box-shadow:0 12px 30px rgba(2,16,45,.34);position:relative}
.btn-primary::after{content:"→";margin-left:10px;font-weight:700;transition:transform .2s}
.btn-primary:hover{transform:translateY(-2px);background:#fff;color:#0a3a90;box-shadow:0 18px 42px rgba(2,16,45,.46)}
.btn-primary:hover::after{transform:translateX(4px)}
.btn-ghost{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn.lg{padding:19px 52px;font-size:1.05rem}

/* ===== Header ===== */
.site-header{position:fixed;inset:0 0 auto 0;z-index:60;display:flex;align-items:center;justify-content:space-between;padding:14px 32px;transition:background .3s,box-shadow .3s,padding .3s}
.site-header.scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(12px);box-shadow:0 1px 0 var(--line);padding:10px 32px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.brand-logo{height:34px;width:auto;display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18));transition:height .3s}
.scrolled .brand-logo{height:30px;filter:none}
.brand-name{font-family:var(--serif);font-weight:600;font-size:21px;letter-spacing:.04em;color:#fff;transition:color .3s}
.scrolled .brand-name{color:var(--navy)}
.site-nav{display:flex;align-items:center;gap:24px}
.site-nav a{text-decoration:none;color:rgba(255,255,255,.9);font-size:13.5px;font-weight:500;letter-spacing:.04em;transition:color .2s}
.scrolled .site-nav a{color:var(--ink)}
.site-nav a:hover{color:var(--blue-light)}
.scrolled .site-nav a:hover{color:var(--blue)}
.nav-cta{border:1px solid rgba(255,255,255,.6);padding:8px 16px;border-radius:3px;color:#fff!important}
.nav-cta:hover{background:var(--blue);border-color:var(--blue);color:#fff!important}
.scrolled .nav-cta{border-color:var(--blue);color:var(--blue)!important}
.scrolled .nav-cta:hover{background:var(--blue);border-color:var(--blue);color:#fff!important}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:#fff;cursor:pointer}
.scrolled .nav-toggle{color:var(--navy)}

/* ===== Hero ===== */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;color:#fff;overflow:hidden;padding:130px 0 0}
.hero-bg{position:absolute;inset:0;z-index:0;background:
  radial-gradient(120% 90% at 80% 6%, rgba(47,138,230,.42) 0%, rgba(47,138,230,0) 46%),
  linear-gradient(155deg,#071f3e 0%,#0d3a7e 50%,#1c63c0 100%);
  background-color:#0b2a5a}
.hero-bg::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(80% 70% at 28% 32%,#000 0%,transparent 75%);opacity:.55}
.hero-inner{position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;padding:0 28px;width:100%}
.hero-kicker{font-size:12px;letter-spacing:.3em;color:rgba(255,255,255,.78);font-weight:500;margin-bottom:26px}
.hero-title{font-family:var(--serif);font-weight:600;font-size:clamp(2.3rem,6vw,4.3rem);line-height:1.32;letter-spacing:.02em;margin-bottom:28px}
.hero-lead{font-size:clamp(.98rem,1.7vw,1.12rem);color:rgba(255,255,255,.85);line-height:2.1;max-width:680px;margin-bottom:38px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.hero-fine{font-size:.92rem;color:rgba(255,255,255,.74)}
.hero-fine strong{color:#fff}
.hero-stats{position:relative;z-index:2;max-width:var(--wrap);margin:64px auto 0;padding:26px 28px;width:100%;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;border-top:1px solid rgba(255,255,255,.18)}
.hstat{display:flex;flex-direction:column;gap:6px;padding:8px 6px}
.hnum{font-family:var(--serif);font-weight:600;font-size:clamp(1.6rem,3.2vw,2.4rem);color:#fff;letter-spacing:.02em}
.hnum .u{font-size:.55em;color:var(--blue-light);margin-left:2px}
.hlbl{font-size:.8rem;color:rgba(255,255,255,.7);letter-spacing:.02em}

/* ===== Positioning band ===== */
.band{background:var(--paper);padding:74px 0}
.band-inner{max-width:880px}
.band-lead{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:clamp(1.4rem,3.2vw,2rem);line-height:1.7;margin-bottom:22px}
.band-sub{color:#4a505c;font-size:1.02rem;line-height:2.1}

/* ===== Section base ===== */
.section{padding:104px 0}
.section-alt{background:var(--paper-alt)}
.section-dark{background:linear-gradient(160deg,#0a2a5e,#134a9e);color:#fff}
.eyebrow{font-size:12px;letter-spacing:.26em;font-weight:700;color:var(--blue);margin-bottom:16px}
.eyebrow.light{color:var(--blue-light)}
.eyebrow.center{text-align:center}
.sec-head{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:clamp(1.7rem,4.2vw,2.6rem);line-height:1.42;letter-spacing:.01em;margin-bottom:22px}
.sec-head.light,.section-dark .sec-head{color:#fff}
.sec-lead{font-size:1.02rem;color:#4a505c;max-width:780px;margin-bottom:54px;line-height:2.05}
.sec-lead.light{color:rgba(255,255,255,.82)}

/* ===== Problem ===== */
.prob-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prob-card{background:#fff;border:1px solid var(--line);border-radius:4px;padding:28px 26px;transition:transform .25s,box-shadow .25s,border-color .25s}
.prob-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(10,42,94,.1);border-color:#cfdcf0}
.prob-no{font-family:var(--serif);font-size:1.05rem;color:var(--blue);display:inline-block;margin-bottom:10px;letter-spacing:.04em}
.prob-card h3{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:1.18rem;margin-bottom:14px}
.prob-now{color:#6a6f7a;font-size:.92rem;line-height:1.85;margin-bottom:16px}
.prob-fix{font-size:.92rem;color:#33383f;line-height:1.85;padding-top:14px;border-top:1px dashed var(--line)}
.prob-fix span{display:inline-block;background:var(--blue-soft);color:var(--blue);font-weight:700;font-size:.74rem;padding:2px 8px;border-radius:3px;margin-right:8px;letter-spacing:.04em}
.prob-cta{background:linear-gradient(150deg,#0a2a5e,#16519e);border-color:transparent;color:#fff;display:flex;flex-direction:column;justify-content:center}
.prob-cta:hover{box-shadow:0 16px 36px rgba(10,42,94,.26)}
.prob-cta p{color:rgba(255,255,255,.85);font-size:.95rem;line-height:1.9}
.prob-cta .strong{color:#fff;font-weight:700;font-size:1.05rem;margin-top:8px}
.prob-link{display:inline-block;margin-top:18px;color:var(--blue-light);font-weight:700;text-decoration:none;font-size:.95rem}
.prob-link:hover{color:#fff}

/* ===== Services ===== */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.svc-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);border-radius:5px;padding:34px 30px;transition:transform .25s,background .25s,border-color .25s}
.svc-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.32)}
.svc-no{font-family:var(--serif);font-size:1.4rem;color:var(--blue-light);display:block;margin-bottom:16px}
.svc-card h3{font-family:var(--serif);font-weight:600;color:#fff;font-size:1.34rem;margin-bottom:16px;letter-spacing:.02em}
.svc-card p{color:rgba(255,255,255,.82);font-size:.95rem;line-height:1.95;margin-bottom:22px}
.svc-tags{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.svc-tags li{font-size:.76rem;color:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.26);border-radius:20px;padding:5px 12px;letter-spacing:.02em}

/* ===== Results ===== */
.bigstats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:64px}
.bigstat{text-align:center;padding:34px 18px;background:linear-gradient(160deg,#fff,#eef5fd);border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:4px}
.bnum{display:block;font-family:var(--serif);font-weight:700;color:var(--blue);font-size:clamp(2.4rem,5vw,3.4rem);line-height:1;margin-bottom:14px;letter-spacing:.02em}
.blbl{font-size:.92rem;color:var(--navy);font-weight:500;line-height:1.6}
.blbl em{display:block;font-style:normal;color:var(--muted);font-size:.82rem;margin-top:4px}

.case{margin-top:30px;padding:40px;background:#fff;border:1px solid var(--line);border-radius:6px}
.case-head{padding-bottom:24px;margin-bottom:28px;border-bottom:1px solid var(--line)}
.case-idx{display:inline-block;font-size:11px;letter-spacing:.18em;font-weight:700;color:var(--blue);margin-bottom:12px}
.case-head h3{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:clamp(1.25rem,2.8vw,1.6rem);line-height:1.55;margin-bottom:10px}
.case-meta{font-size:.84rem;letter-spacing:.06em;color:#9aa0ab}
.case-body{display:grid;grid-template-columns:1fr 1.05fr;gap:42px;align-items:start}
.case-text p{font-size:.96rem;color:#3c424c;line-height:1.95;margin-bottom:16px}
.ct-label{display:inline-block;font-weight:700;font-size:.74rem;letter-spacing:.06em;color:var(--muted);border:1px solid var(--line);border-radius:3px;padding:1px 9px;margin-right:10px;vertical-align:middle}
.ct-label.accent{color:var(--blue);border-color:#bcd9f7;background:var(--blue-soft)}
.case-note{margin-top:6px;padding:14px 18px;background:var(--blue-soft);border-left:3px solid var(--blue);border-radius:0 3px 3px 0;color:var(--navy);font-size:.92rem;font-weight:500}

.metric-table{border-top:1.5px solid var(--navy)}
.metric-row{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;align-items:center;padding:15px 12px;border-bottom:1px solid var(--line)}
.metric-head{background:var(--paper-alt);font-size:11px;letter-spacing:.1em;color:var(--muted);font-weight:700;padding:11px 12px}
.metric-head span:not(:first-child),.metric-row span:not(.m-name){text-align:right}
.m-name{font-weight:700;color:var(--navy);font-size:.94rem}
.m-before{color:#9aa0ab;font-size:.92rem}
.m-after{color:var(--navy);font-weight:700;font-size:.98rem}
.m-delta{color:var(--blue);font-weight:700;font-size:1.02rem;font-family:var(--serif)}

/* ===== Strength: compare ===== */
.compare-wrap{overflow-x:auto;margin-bottom:60px}
.compare{width:100%;border-collapse:collapse;min-width:640px;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.compare th,.compare td{padding:18px 14px;text-align:center;font-size:.92rem;border-bottom:1px solid var(--line)}
.compare thead th{background:#eaf1fa;color:var(--muted);font-weight:600;font-size:.85rem;line-height:1.5}
.compare .c-row-head{text-align:left;font-weight:700;color:var(--navy);font-size:.95rem;background:#f7faff;width:210px}
.compare thead .c-row-head{background:#eaf1fa}
.compare .c-us{background:linear-gradient(135deg,#2b8fe6,#1257c0);color:#fff;font-weight:700;font-family:var(--serif);letter-spacing:.04em}
.compare tbody td.c-us{background:var(--blue-soft)}
.compare tbody tr:last-child td.c-us{border-bottom:2px solid var(--blue)}
.ok{color:var(--navy);font-weight:700}.c-us .ok{color:var(--blue)}
.tri{color:var(--gold)}.no{color:#b04a4a}

.reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.reason{background:#fff;border:1px solid var(--line);border-top:3px solid var(--navy);border-radius:4px;padding:32px 28px}
.reason-no{font-family:var(--serif);color:var(--blue);font-size:1.5rem;margin-bottom:14px}
.reason h3{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:1.26rem;margin-bottom:14px;line-height:1.5}
.reason p{color:#4a505c;font-size:.94rem;line-height:1.95}

/* ===== Process ===== */
.steps{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pstep{position:relative;padding:34px 28px;background:#fff;border:1px solid var(--line);border-radius:4px}
.pstep::before{content:"";position:absolute;top:-1px;left:0;width:48px;height:3px;background:var(--blue)}
.pstep-no{font-size:11px;letter-spacing:.16em;font-weight:700;color:var(--blue);display:block;margin-bottom:14px}
.pstep h3{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:1.3rem;margin-bottom:12px}
.pstep p{color:#4a505c;font-size:.94rem;line-height:1.95}

/* ===== Founders ===== */
.founders{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.founder{padding:38px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--navy);border-radius:5px}
.founder-role{font-size:11px;letter-spacing:.2em;color:var(--muted);font-weight:700;margin-bottom:14px}
.founder-name{font-family:var(--serif);font-weight:600;color:var(--navy);font-size:1.7rem;letter-spacing:.06em}
.founder-tag{color:var(--blue);font-weight:700;font-size:.92rem;margin:8px 0 22px}
.founder ul{list-style:none}
.founder li{font-size:.92rem;color:#4a505c;padding-left:20px;position:relative;margin-bottom:12px;line-height:1.85}
.founder li::before{content:"";position:absolute;left:0;top:13px;width:6px;height:6px;background:var(--blue);border-radius:50%}

/* ===== Contact ===== */
.contact{background:linear-gradient(160deg,#08224a 0%,#103e86 55%,#1a63c4 100%);color:#fff;text-align:center;padding:118px 0;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 50% 0,rgba(47,138,230,.36),transparent 60%)}
.contact .container{position:relative;z-index:2}
.contact-head{font-family:var(--serif);font-weight:600;font-size:clamp(1.9rem,4.8vw,3rem);line-height:1.45;margin-bottom:22px}
.contact-lead{color:rgba(255,255,255,.84);font-size:1.02rem;line-height:2.05;margin-bottom:42px}
.contact-fine{margin-top:30px;font-size:.86rem;color:rgba(255,255,255,.68);letter-spacing:.02em}

/* ===== Footer ===== */
.site-footer{background:#07204a;color:rgba(255,255,255,.6);text-align:center;padding:54px 24px}
.foot-brand{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-logo{height:38px;width:auto;filter:drop-shadow(0 1px 3px rgba(0,0,0,.25))}
.foot-brand .brand-name{font-family:var(--serif);font-weight:600;font-size:22px;letter-spacing:.04em;color:#fff}
.foot-tag{color:rgba(255,255,255,.82);letter-spacing:.04em;margin-bottom:14px;font-size:.95rem}
.site-footer .fine{font-size:.8rem;margin-top:6px}

/* ===== Responsive ===== */
.sp-br{display:none}.pc-br{display:inline}
@media(max-width:980px){
  .prob-grid,.svc-grid,.reasons,.steps,.bigstats{grid-template-columns:1fr 1fr}
  .prob-cta{grid-column:1/-1}
}
@media(max-width:860px){
  .case-body{grid-template-columns:1fr;gap:28px}
  .founders{grid-template-columns:1fr}
  .pc-br{display:none}
}
@media(max-width:720px){
  .site-nav{position:fixed;top:60px;right:0;left:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:max-height .3s ease;align-items:stretch}
  .site-nav.open{max-height:460px;box-shadow:0 12px 24px rgba(10,42,94,.14)}
  .site-nav a{padding:15px 30px;border-top:1px solid var(--line);color:var(--ink)}
  .nav-cta{border:none;border-radius:0;color:var(--blue)!important}
  .nav-toggle{display:block}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
  .prob-grid,.svc-grid,.reasons,.steps,.bigstats{grid-template-columns:1fr}
  .section{padding:72px 0}
  .case{padding:26px 20px}
  .metric-row{grid-template-columns:1fr 1fr;gap:4px 8px;padding:13px 8px}
  .metric-head{display:none}
  .m-name{grid-column:1/-1;margin-bottom:2px}
  .metric-row span:not(.m-name){text-align:left}
  .m-before::before{content:"Before ";font-size:.7rem;color:#a9b2c0}
  .m-after::before{content:"After ";font-size:.7rem;color:#a9b2c0}
  .m-delta::before{content:"削減 ";font-size:.7rem;color:#9ec3ef}
}