*{margin:0;padding:0;box-sizing:border-box}
:root{
  --nav-h:72px;
  --navy:#132d40;--navy-deep:#081826;--blue-main:#2d6189;--blue-dark:#1e4a6a;
  --blue-light:#7ab8d4;--blue-bg:#e8f2f8;--sky:#f0f6fa;
  --gold:#4a7a9b;--gold-light:#7ab8d4;
  --text-main:#1a252f;--text-sub:#5a6e7a;--text-mute:#96a8b2;--border:#dce6ed;
  --content:1180px;
  --eng:'Cormorant Garamond',Georgia,serif;
  --jpn:'Noto Sans JP','Hiragino Sans',sans-serif;
  --mincho:'Shippori Mincho','Hiragino Mincho ProN',serif;
  --ease:cubic-bezier(0.16,1,0.3,1)}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--jpn);font-size:14px;font-weight:300;color:var(--text-main);line-height:1.95;background:#fff;overflow-x:hidden;opacity:0;transition:opacity .35s ease-out}
body.fonts-loaded{opacity:1}
::selection{background:var(--gold);color:#fff}

.scroll-progress{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--gold),var(--gold-light));z-index:9999;width:0%;transition:width .1s linear}
.grain{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.035;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);display:flex;align-items:center;background:rgba(255,255,255,.85);backdrop-filter:blur(20px) saturate(1.2);border-bottom:0.5px solid var(--border)}
.header-inner{max-width:none;margin:0;padding:0 80px;width:100%;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--eng);font-size:25px;font-weight:500;color:var(--navy);letter-spacing:.08em;text-decoration:none;display:flex;align-items:center;gap:2px}
.logo .re{color:var(--gold)}
.logo .hp{font-family:'Inter','Helvetica Neue',Arial,sans-serif;font-weight:500;display:inline-block;margin:0 .04em;transform:translateY(-2px);font-size:.85em}
nav{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-item>a{font-family:var(--eng);font-size:15px;font-weight:500;color:var(--text-sub);text-decoration:none;letter-spacing:.05em;padding:10px 18px;display:block;transition:color .4s}
.nav-item:hover>a,.nav-item.active>a{color:var(--navy)}
.nav-cta{margin-left:14px;font-family:var(--eng);font-size:13px;font-weight:500;letter-spacing:.06em;color:var(--navy);background:var(--gold);padding:11px 24px;text-decoration:none;border:1px solid var(--gold);transition:all .4s var(--ease)}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none;z-index:1001}
.hamburger span{display:block;width:26px;height:1.5px;background:var(--navy)}

/* ═══ HERO ═══ */
.cs-hero{position:relative;height:520px;padding-top:var(--nav-h);overflow:hidden}
.cs-hero-bg{position:absolute;inset:0;background:radial-gradient(ellipse 70% 100% at 75% 50%,rgba(45,97,137,.5),transparent 65%),radial-gradient(ellipse 50% 80% at 20% 30%,rgba(74,122,155,.12),transparent 60%),linear-gradient(140deg,var(--navy-deep) 0%,var(--navy) 100%)}
.cs-hero-texture{position:absolute;inset:0;opacity:.2;background-image:linear-gradient(rgba(122,184,212,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(122,184,212,.08) 1px,transparent 1px);background-size:54px 54px;transform:perspective(600px) rotateX(55deg) scale(2);transform-origin:bottom;mask-image:linear-gradient(to top,#000 0%,transparent 65%);-webkit-mask-image:linear-gradient(to top,#000 0%,transparent 65%);z-index:1}
.cs-hero-content{position:relative;z-index:5;height:100%;max-width:none;margin:0;padding:calc(var(--nav-h) + 40px) 80px 60px;display:flex;flex-direction:column;justify-content:center}
.cs-breadcrumb{font-family:var(--eng);font-size:11px;color:rgba(255,255,255,.45);letter-spacing:.1em;margin-bottom:22px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.cs-breadcrumb a{color:rgba(255,255,255,.45);text-decoration:none;transition:color .3s}
.cs-breadcrumb a:hover{color:var(--gold-light)}
.cs-eyebrow{display:flex;align-items:center;gap:16px;margin-bottom:22px}
.cs-eyebrow::before{content:'';width:48px;height:1px;background:linear-gradient(90deg,var(--gold),transparent)}
.cs-eyebrow span{font-family:var(--eng);font-size:12px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;color:var(--gold-light)}
.cs-case-num{font-family:var(--eng);font-style:italic;font-size:clamp(60px,8vw,110px);font-weight:300;color:var(--gold-light);line-height:1;letter-spacing:.02em;margin-bottom:20px}
.cs-title{font-family:var(--mincho);font-size:clamp(15px,4.4vw,42px);font-weight:500;color:#fff;line-height:1.5;letter-spacing:.02em;margin-bottom:22px}
.cs-sub{font-family:var(--jpn);font-size:clamp(11.5px,2.6vw,15px);font-weight:300;color:rgba(255,255,255,.75);line-height:2.05;max-width:680px;letter-spacing:.02em}

/* ═══ OVERVIEW ═══ */
.cs-overview{background:#fff;padding:80px 0}
.cs-overview-inner{max-width:var(--content);margin:0 auto;padding:0 40px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:start}
.cs-section-eyebrow{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.cs-section-eyebrow::before{content:'';width:40px;height:1px;background:var(--gold)}
.cs-section-eyebrow span{font-family:var(--eng);font-size:12px;font-weight:500;letter-spacing:.26em;text-transform:uppercase;color:var(--blue-main)}
.cs-section-title{font-family:var(--mincho);font-size:clamp(16px,3.4vw,28px);font-weight:500;color:var(--text-main);line-height:1.55;letter-spacing:.02em;margin-bottom:24px}
.cs-summary p{font-size:14.5px;line-height:2.1;color:var(--text-sub);margin-bottom:16px}
.cs-spec{}
.cs-spec-table{width:100%;border-collapse:collapse}
.cs-spec-table tr{border-bottom:0.5px solid var(--border)}
.cs-spec-table tr:first-child{border-top:1px solid var(--navy)}
.cs-spec-table th{font-family:var(--jpn);font-size:13px;font-weight:500;color:var(--navy);letter-spacing:.04em;text-align:left;padding:18px 20px 18px 0;vertical-align:top;width:36%}
.cs-spec-table td{font-family:var(--jpn);font-size:14px;color:var(--text-main);padding:18px 0;line-height:1.85}

/* ═══ RESULT ═══ */
.cs-result{background:var(--navy);color:#fff;padding:90px 0;position:relative;overflow:hidden}
.cs-result::before{content:'RESULT';position:absolute;top:50%;right:0;transform:translateY(-50%);font-family:var(--eng);font-style:italic;font-size:clamp(50px,14vw,260px);font-weight:300;color:rgba(255,255,255,.03);line-height:1;letter-spacing:.04em;pointer-events:none}
.cs-result-inner{max-width:var(--content);margin:0 auto;padding:0 40px;position:relative;z-index:2}
.cs-result-eyebrow span{color:var(--gold-light)}
.cs-result-title{color:#fff !important}
.cs-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;margin-top:48px}
.cs-stat{padding:36px 28px;background:rgba(255,255,255,.04);border-left:3px solid var(--gold);text-align:left}
.cs-stat-label{font-family:var(--eng);font-size:11px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-light);margin-bottom:14px}
.cs-stat-num{font-family:var(--eng);font-size:clamp(36px,4vw,52px);font-weight:400;color:#fff;line-height:1;letter-spacing:.01em;display:flex;align-items:baseline;gap:6px;margin-bottom:10px}
.cs-stat-num .unit{font-size:.4em;color:var(--gold-light);font-weight:500}
.cs-stat-desc{font-size:12.5px;line-height:1.85;color:rgba(255,255,255,.65);letter-spacing:.04em}

/* ═══ BEFORE / AFTER ═══ */
.cs-ba{background:#fff;padding:90px 0}
.cs-ba-inner{max-width:var(--content);margin:0 auto;padding:0 40px}
.cs-ba-grid{display:grid;grid-template-columns:minmax(0,1fr) 60px minmax(0,1fr);gap:0;margin-top:48px;align-items:stretch}
.cs-ba-card{background:var(--sky);padding:36px 36px 40px;position:relative;overflow:hidden}
.cs-ba-arrow{display:flex;align-items:center;justify-content:center;font-family:var(--eng);font-size:30px;color:var(--gold);font-weight:300}
.cs-ba-label{font-family:var(--eng);font-size:11px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--text-mute);margin-bottom:18px}
.cs-ba-card.after .cs-ba-label{color:var(--gold)}
.cs-ba-img{aspect-ratio:16/10;background:var(--navy);margin-bottom:24px;position:relative;overflow:hidden}
.cs-ba-img-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 60% 40%,rgba(122,184,212,.2),transparent 60%),linear-gradient(140deg,#1e4a6a,#0d2233)}
.cs-ba-card.after .cs-ba-img-bg{background:radial-gradient(ellipse at 60% 40%,rgba(74,122,155,.2),transparent 60%),linear-gradient(140deg,#1e4a6a,#0d2233)}
.cs-ba-img-tag{position:absolute;top:14px;left:14px;font-family:var(--eng);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#fff;background:rgba(14,32,50,.55);backdrop-filter:blur(6px);padding:5px 12px;z-index:2}
.cs-ba-title{font-family:var(--mincho);font-size:18px;font-weight:500;color:var(--text-main);margin-bottom:14px;letter-spacing:.02em}
.cs-ba-list{list-style:none;padding:0}
.cs-ba-list li{padding-left:18px;position:relative;font-size:13px;line-height:2;color:var(--text-sub)}
.cs-ba-list li::before{content:'';position:absolute;left:0;top:14px;width:8px;height:1px;background:var(--gold)}

/* ═══ NARRATIVE ═══ */
.cs-narr{background:var(--sky);padding:90px 0}
.cs-narr-inner{max-width:880px;margin:0 auto;padding:0 40px}
.cs-narr-title{font-family:var(--mincho);font-size:clamp(22px,2.6vw,30px);font-weight:500;color:var(--text-main);line-height:1.55;letter-spacing:.02em;margin-bottom:36px;padding-left:18px;border-left:3px solid var(--gold)}
.cs-narr p{font-size:14.5px;line-height:2.2;color:var(--text-main);margin-bottom:20px;letter-spacing:.03em}
.cs-narr blockquote{border-left:3px solid var(--blue-main);padding:20px 28px;margin:32px 0;background:#fff;font-family:var(--mincho);font-size:15px;line-height:2;color:var(--navy);letter-spacing:.04em}
.cs-narr blockquote cite{display:block;margin-top:12px;font-family:var(--eng);font-style:italic;font-size:12px;color:var(--text-mute);text-align:right}

/* ═══ RELATED ═══ */
.cs-related{background:#fff;padding:90px 0}
.cs-related-inner{max-width:var(--content);margin:0 auto;padding:0 40px}
.cs-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:48px}
.cs-related-card{background:#fff;border:0.5px solid var(--border);text-decoration:none;transition:transform .5s var(--ease),box-shadow .5s var(--ease);overflow:hidden}
.cs-related-card:hover{transform:translateY(-4px);box-shadow:0 30px 60px -25px rgba(0,0,0,.15)}
.cs-related-img{aspect-ratio:16/10;background:var(--navy);position:relative;overflow:hidden}
.cs-related-img-bg{position:absolute;inset:0;background:radial-gradient(ellipse at 60% 40%,rgba(122,184,212,.25),transparent 60%),linear-gradient(140deg,#1e4a6a,#0d2233);transition:transform 1s var(--ease)}
.cs-related-card:hover .cs-related-img-bg{transform:scale(1.06)}
.cs-related-body{padding:24px 28px 28px}
.cs-related-meta{font-family:var(--eng);font-size:10px;font-weight:500;letter-spacing:.18em;color:var(--gold);margin-bottom:10px}
.cs-related-title{font-family:var(--mincho);font-size:15px;font-weight:500;color:var(--text-main);line-height:1.55;letter-spacing:.02em}
.cs-related-back{text-align:center;margin-top:48px}
.cs-related-back a{font-family:var(--eng);font-size:13px;font-weight:500;letter-spacing:.06em;color:var(--navy);text-decoration:none;display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border:1px solid var(--navy);transition:all .4s var(--ease)}
.cs-related-back a:hover{background:var(--navy);color:#fff;gap:16px}

/* ═══ FOOTER (same) ═══ */
footer{background:var(--navy-deep);padding:56px 0 0;border-top:0.5px solid rgba(255,255,255,.06)}
footer .inner{max-width:1440px;padding:0 80px}
.ft-top{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr);gap:48px;padding-bottom:60px;border-bottom:0.5px solid rgba(255,255,255,.08);max-width:var(--content);margin:0 auto;padding-left:40px;padding-right:40px}
.ft-logo{font-family:var(--eng);font-size:24px;font-weight:500;color:#fff;letter-spacing:.08em;margin-bottom:24px;display:inline-block;text-decoration:none}
.ft-logo .re{color:var(--gold)}
.ft-logo .hp{font-family:'Inter','Helvetica Neue',Arial,sans-serif;font-weight:500;display:inline-block;margin:0 .04em;transform:translateY(-2px);font-size:.85em}
.ft-addr{font-size:12.5px;color:rgba(255,255,255,.45);line-height:2.1;margin-bottom:20px}
.ft-contact{font-family:var(--eng);font-size:13px;color:rgba(255,255,255,.6);line-height:2}
.ft-contact a{color:var(--gold-light);text-decoration:none}
.ft-col h4{font-family:var(--eng);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:22px}
.ft-col a{display:block;font-size:13px;color:rgba(255,255,255,.6);text-decoration:none;line-height:2.4;letter-spacing:.02em;transition:all .3s}
.ft-col a:hover{color:#fff;padding-left:6px}
.ft-bottom{max-width:var(--content);margin:0 auto;padding:28px 40px;display:flex;justify-content:space-between;align-items:center}
.ft-copy{font-family:var(--eng);font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.3)}

@media(max-width:980px){
  .cs-overview-inner{grid-template-columns:minmax(0,1fr);gap:48px}
  .cs-stats{grid-template-columns:minmax(0,1fr);gap:20px}
  .cs-ba-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .cs-ba-arrow{transform:rotate(90deg);padding:16px 0}
  .cs-related-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .ft-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px}
}
@media(max-width:768px){
  :root{--nav-h:64px} nav{display:none} .hamburger{display:flex}
  .header-inner{padding-left:24px;padding-right:24px}
  .cs-hero{height:auto;min-height:420px}
  .cs-hero-content{padding:calc(var(--nav-h) + 60px) 24px 50px}
  
  .cs-overview-inner,.cs-result-inner,.cs-ba-inner,.cs-narr-inner,.cs-related-inner{padding-left:24px;padding-right:24px}
  .cs-overview,.cs-result,.cs-ba,.cs-narr,.cs-related{padding:60px 0}
  .ft-top{grid-template-columns:minmax(0,1fr);padding-left:24px;padding-right:24px}
  .ft-bottom{padding:28px 24px;flex-direction:column;gap:12px;text-align:center}
}


/* ── Focus visibility (accessibility) ── */
:focus-visible{outline:2px solid #2d6189;outline-offset:3px;border-radius:2px}
html{scroll-behavior:smooth}

@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}