/* ===== Reset ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --teal:#0d6e6e;
  --teal-light:#5ec6c6;
  --teal-dark:#095555;
  --mint:#7edccc;
  --dark:#1a1a1a;
  --gray:#333;
  --light-gray:#666;
  --border:#e0e0e0;
  --bg:#f7f9f9;
  --white:#fff;
  --font-display:'Outfit',sans-serif;
  --font-heading:'Outfit',sans-serif;
  --font-body:'Zen Kaku Gothic New','Outfit',sans-serif;
  --ease:cubic-bezier(.25,.46,.45,.94);
  --ease-expo:cubic-bezier(.19,1,.22,1);
}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font-body);color:var(--dark);background:var(--white);overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:rgba(13,110,110,.15);color:var(--dark)}

/* ===== Header ===== */
#header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .4s,backdrop-filter .4s,box-shadow .4s;
}
#header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 1px 0 rgba(0,0,0,.06);
}
#header.scrolled .logo-img{filter:none}
#header.scrolled.header-on-dark{background:rgba(26,26,26,.9)}
#header.scrolled.header-on-dark .logo-img{filter:brightness(0) invert(1)}
#header.scrolled.header-on-dark .nav-desktop a{color:rgba(255,255,255,.7)}
#header.scrolled.header-on-dark .nav-desktop a:hover{color:#fff}
#header.scrolled.header-on-dark .nav-desktop a::after{background:#fff}
#header.scrolled.header-on-dark .nav-cta{border-color:rgba(255,255,255,.3)!important;color:rgba(255,255,255,.7)!important}
#header.scrolled.header-on-dark .nav-cta:hover{background:#fff!important;color:var(--dark)!important}
#header.scrolled .nav-desktop a{color:var(--gray)}
#header.scrolled .nav-desktop a:hover{color:var(--teal)}
#header.scrolled .nav-desktop a::after{background:var(--teal)}
#header.scrolled .nav-cta{border-color:var(--teal)!important;color:var(--teal)!important}
#header.scrolled .nav-cta:hover{background:var(--teal)!important;color:#fff!important}
#header.scrolled .nav-toggle span{background:var(--dark)}

.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:72px;padding:0 clamp(24px,4vw,48px)}
.logo-img{height:28px;width:auto;filter:brightness(0) invert(1);transition:filter .4s}
.nav-desktop{display:flex;align-items:center;gap:36px}
.nav-desktop a{font-size:13px;font-weight:400;color:rgba(255,255,255,.7);letter-spacing:.5px;transition:color .3s;position:relative;font-family:var(--font-heading)}
.nav-desktop a:not(.nav-cta)::after{
  content:'';position:absolute;bottom:-4px;left:0;width:0;height:1px;
  background:#fff;transition:width .4s var(--ease-expo);
}
.nav-desktop a:not(.nav-cta):hover::after{width:100%}
.nav-desktop a:hover{color:#fff}
.nav-cta{border:1px solid rgba(255,255,255,.4)!important;padding:8px 24px;transition:all .3s!important;border-radius:4px}
.nav-cta:hover{background:#fff!important;color:var(--dark)!important}
.nav-cta::after{display:none!important}

.nav-toggle{display:none;flex-direction:column;gap:6px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{width:24px;height:1.5px;background:#fff;transition:transform .3s,opacity .3s}
.mobile-nav{position:fixed;inset:0;z-index:99;background:rgba(13,110,110,.97);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:40px;opacity:0;pointer-events:none;transition:opacity .4s}
.mobile-nav.open{opacity:1;pointer-events:all}
.mobile-nav-link{font-size:24px;color:#fff;font-weight:300;letter-spacing:2px;font-family:var(--font-heading)}

@media(max-width:768px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:100vh;
  display:flex;flex-direction:column;justify-content:center;
  padding:120px clamp(24px,4vw,48px) 80px;
  background:linear-gradient(135deg,#0d6e6e 0%,#0a5858 40%,#085050 100%);
  overflow:hidden;
}
#liquid-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:auto}
.hero-overlay{position:absolute;inset:0;z-index:2;background:radial-gradient(ellipse at 30% 50%,rgba(126,220,204,.12) 0%,transparent 60%);pointer-events:none}
.hero-content{position:relative;z-index:10;max-width:1200px;margin:0 auto;width:100%;pointer-events:none}
.hero-content *{pointer-events:auto}

.hero-tag{font-size:12px;font-weight:500;letter-spacing:4px;color:rgba(255,255,255,.6);text-transform:uppercase;margin-bottom:32px;font-family:var(--font-heading)}
.hero-title{font-family:var(--font-display);font-size:clamp(48px,8vw,100px);font-weight:700;color:#fff;line-height:1.1;margin-bottom:32px;letter-spacing:-.04em}
.hero-title em{font-style:normal;color:var(--mint);font-weight:700}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:rgba(255,255,255,.8);line-height:2;font-weight:400;max-width:560px;margin-bottom:44px;letter-spacing:.01em}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:16px 40px;background:#fff;color:var(--teal);font-size:14px;font-weight:500;border-radius:4px;transition:transform .3s var(--ease),box-shadow .3s;font-family:var(--font-body);letter-spacing:.03em}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.15)}
.btn-ghost{display:inline-block;padding:16px 40px;border:1px solid rgba(255,255,255,.25);color:rgba(255,255,255,.7);font-size:14px;font-weight:300;border-radius:4px;transition:all .3s;font-family:var(--font-body);letter-spacing:.03em}
.btn-ghost:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);color:#fff}

.scroll-indicator{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:10}
.scroll-line{display:block;width:1px;height:50px;background:linear-gradient(180deg,rgba(255,255,255,.4),transparent);animation:pulse-line 2s ease-in-out infinite}
@keyframes pulse-line{0%,100%{opacity:.3;transform:scaleY(.5);transform-origin:top}50%{opacity:1;transform:scaleY(1)}}

/* ===== Sections ===== */
.section{padding:clamp(100px,14vh,160px) clamp(24px,4vw,48px)}
.section-alt{background:var(--bg)}
.section-accent{position:relative;background:linear-gradient(135deg,var(--teal) 0%,var(--teal-dark) 100%);overflow:hidden}
.contact-inner{position:relative;z-index:10}
.container{max-width:1200px;margin:0 auto}
.section-head{margin-bottom:72px}
.label{display:block;font-size:11px;font-weight:600;letter-spacing:4px;text-transform:uppercase;color:var(--teal);margin-bottom:24px;font-family:var(--font-heading)}
.title{font-family:var(--font-display);font-size:clamp(32px,5vw,56px);font-weight:600;line-height:1.2;color:var(--dark);letter-spacing:-.03em}
.subtitle{font-size:15px;color:var(--gray);margin-top:20px;font-weight:400;letter-spacing:.01em}

/* Section transitions */
.section-transition{position:relative;height:120px;overflow:hidden}
.light-to-dark{background:var(--dark)}
.light-to-dark::before{
  content:'';position:absolute;inset:0;
  background:var(--white);
  clip-path:ellipse(60% 100% at 50% 0%);
}
.dark-to-light{background:var(--white)}
.dark-to-light::before{
  content:'';position:absolute;inset:0;
  background:var(--dark);
  clip-path:ellipse(60% 100% at 50% 0%);
}

/* Dark theme sections */
.section-dark-theme{
  background:var(--dark);
  transition:background .6s var(--ease-expo);
}
.section-dark-theme .label{color:var(--mint)}
.section-dark-theme .title{color:#fff}
.section-dark-theme .subtitle{color:rgba(255,255,255,.65)}
.section-dark-theme .case-card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.08)}
.section-dark-theme .case-card:hover{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.15);box-shadow:0 20px 48px rgba(0,0,0,.3)}
.section-dark-theme .case-card::before{background:linear-gradient(135deg,rgba(126,220,204,.05),rgba(13,110,110,.08))}
.section-dark-theme .case-industry{color:var(--mint)}
.section-dark-theme .case-title{color:#fff}
.section-dark-theme .case-desc{color:rgba(255,255,255,.7)}
.section-dark-theme .case-tags span{color:var(--mint);background:rgba(126,220,204,.08)}
.section-dark-theme .case-card:hover .case-tags span{background:rgba(126,220,204,.14)}

/* Light theme sections (explicit) */
.section-light-theme{background:var(--white)}

/* Section divider */
.section-divider{max-width:1200px;margin:0 auto;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}

/* ===== Services ===== */
.services-list{display:flex;flex-direction:column}
.svc{display:grid;grid-template-columns:80px 1fr;gap:0 40px;padding:52px 0;border-top:1px solid var(--border);transition:all .4s var(--ease);position:relative}
.svc:last-child{border-bottom:1px solid var(--border)}
.svc::before{content:'';position:absolute;left:-48px;top:0;bottom:0;width:3px;background:var(--teal);transform:scaleY(0);transform-origin:top;transition:transform .5s var(--ease-expo)}
.svc:hover::before{transform:scaleY(1)}
.svc:hover{padding-left:20px}
.svc-num{font-family:var(--font-heading);font-size:48px;font-weight:200;color:var(--teal);opacity:.15;line-height:1;transition:opacity .4s,color .4s}
.svc:hover .svc-num{opacity:.6}
.svc-body h3{font-size:20px;font-weight:500;color:var(--dark);margin-bottom:12px;display:flex;align-items:baseline;gap:16px;font-family:var(--font-heading);letter-spacing:-.01em}
.svc-jp{font-size:12px;color:var(--light-gray);font-weight:300;font-family:var(--font-body)}
.svc-body p{font-size:15px;color:var(--gray);line-height:2;font-weight:400;max-width:640px;letter-spacing:.01em}

@media(max-width:768px){
  .svc{grid-template-columns:50px 1fr;gap:0 16px;padding:36px 0}
  .svc:hover{padding-left:0}
  .svc::before{display:none}
  .svc-body h3{flex-direction:column;gap:4px}
}

/* ===== Case Studies ===== */
.cases-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.case-card{padding:40px;border:1px solid var(--border);border-radius:8px;background:var(--white);transition:all .5s var(--ease-expo);position:relative;overflow:hidden}
.case-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,110,110,.03),rgba(126,220,204,.04));opacity:0;transition:opacity .5s}
.case-card:hover{transform:translateY(-6px);box-shadow:0 20px 48px rgba(13,110,110,.08);border-color:rgba(13,110,110,.15)}
.case-card:hover::before{opacity:1}
.case-card:last-child:nth-child(odd){grid-column:1 / -1;max-width:calc(50% - 14px)}
.case-industry{font-size:11px;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--teal);display:block;margin-bottom:16px;font-family:var(--font-heading);position:relative}
.case-title{font-size:18px;font-weight:500;color:var(--dark);margin-bottom:14px;line-height:1.6;font-family:var(--font-body);position:relative}
.case-desc{font-size:14px;color:var(--gray);line-height:2;font-weight:300;margin-bottom:20px;position:relative;letter-spacing:.02em}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;position:relative}
.case-tags span{font-size:11px;color:var(--teal);background:rgba(13,110,110,.05);padding:5px 14px;border-radius:3px;font-weight:500;font-family:var(--font-heading);letter-spacing:.5px;transition:background .3s}
.case-card:hover .case-tags span{background:rgba(13,110,110,.08)}
@media(max-width:768px){
  .cases-grid{grid-template-columns:1fr}
  .case-card:last-child:nth-child(odd){max-width:100%}
}

/* ===== About ===== */
.about-lead{max-width:800px;margin-bottom:80px}
.about-lead p{font-size:clamp(15px,1.6vw,18px);color:var(--gray);line-height:2.1;font-weight:400;margin-bottom:24px;letter-spacing:.01em}
.about-lead p.about-philosophy{font-weight:600;color:var(--dark);font-family:var(--font-display);font-size:clamp(20px,2.2vw,28px);letter-spacing:-.02em;margin-top:16px}
.about-lead p:last-child{margin-bottom:0}
.info-table{max-width:800px}
.info-row{display:flex;padding:24px 0;border-top:1px solid var(--border);gap:40px;transition:background .3s}
.info-row:hover{background:rgba(13,110,110,.01)}
.info-row:last-child{border-bottom:1px solid var(--border)}
.info-key{flex-shrink:0;width:100px;font-size:12px;color:var(--light-gray);font-weight:400;letter-spacing:.5px;font-family:var(--font-heading)}
.info-val{font-size:15px;color:var(--dark);line-height:1.8;letter-spacing:.02em}
.info-val a{color:var(--teal);transition:opacity .3s;text-decoration:underline;text-decoration-color:rgba(13,110,110,.2);text-underline-offset:3px}
.info-val a:hover{text-decoration-color:var(--teal)}

@media(max-width:768px){
  .info-row{flex-direction:column;gap:6px}
  .info-key{width:auto}
}

/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.contact-left{padding-top:20px}
.contact-desc{font-size:16px;color:rgba(255,255,255,.65);line-height:2;font-weight:300;margin-bottom:24px;margin-top:24px;letter-spacing:.03em}
.contact-email{font-size:14px;color:rgba(255,255,255,.45);font-family:var(--font-heading);letter-spacing:1px}

.contact-form{display:flex;flex-direction:column;gap:20px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:13px;color:rgba(255,255,255,.7);font-weight:500;letter-spacing:.5px;font-family:var(--font-heading)}
.required{color:var(--mint)}
.form-group input,.form-group textarea,.form-group select{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  border-radius:4px;padding:14px 16px;color:#fff;font-size:14px;font-family:var(--font-body);
  transition:border-color .3s,background .3s;outline:none;letter-spacing:.02em;
}
.form-group input::placeholder,.form-group textarea::placeholder{color:rgba(255,255,255,.2)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--mint);background:rgba(255,255,255,.1)}
.form-group textarea{resize:vertical;min-height:120px}

/* Form select */
.form-group select{
  appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 16px center;
}
.form-group select option{background:#2a2a2a;color:#fff}

/* Checkboxes */
.form-checks{display:flex;flex-direction:column;gap:12px;margin-top:4px}
.check-label{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;cursor:pointer;letter-spacing:.02em}
.check-label input[type="checkbox"]{margin-top:3px;flex-shrink:0;accent-color:var(--mint);width:15px;height:15px}
.check-label a{color:var(--mint);text-decoration:underline;text-decoration-color:rgba(126,220,204,.3);text-underline-offset:2px}
.check-label a:hover{text-decoration-color:var(--mint)}

/* Confirm screen */
.confirm-title{font-size:16px;color:#fff;font-weight:500;margin-bottom:24px;font-family:var(--font-heading)}
.confirm-list{display:grid;gap:0}
.confirm-list dt{font-size:11px;color:rgba(255,255,255,.35);padding-top:16px;font-family:var(--font-heading);letter-spacing:1px;text-transform:uppercase}
.confirm-list dd{font-size:15px;color:#fff;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.08);white-space:pre-wrap;line-height:1.8}
.confirm-btns{display:flex;gap:16px;margin-top:28px}
.btn-back{padding:14px 36px;background:transparent;border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.6);font-size:14px;border-radius:4px;cursor:pointer;font-family:var(--font-body);transition:all .3s}
.btn-back:hover{border-color:rgba(255,255,255,.4);color:#fff}

.btn-submit{
  padding:16px 40px;background:#fff;color:var(--teal);font-size:14px;font-weight:500;
  border:none;border-radius:4px;cursor:pointer;transition:transform .3s,box-shadow .3s,opacity .3s;
  font-family:var(--font-body);align-self:flex-start;letter-spacing:.03em;
}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(0,0,0,.2)}
.btn-submit:disabled{opacity:.5;cursor:not-allowed;transform:none}

.form-status{font-size:14px;min-height:20px;letter-spacing:.02em}
.form-status.success{color:var(--mint)}
.form-status.error{color:#ff8a80}

/* Footer links */
.footer-links{display:flex;gap:24px;margin-bottom:8px;justify-content:flex-end}
.footer-links a{font-size:11px;color:var(--light-gray);transition:color .3s;font-family:var(--font-heading);letter-spacing:.5px}
.footer-links a:hover{color:var(--teal)}

@media(max-width:768px){
  .contact-grid{grid-template-columns:1fr;gap:48px}
  .confirm-btns{flex-direction:column}
  .footer-links{justify-content:center}
}

/* ===== Footer ===== */
.footer{padding:48px clamp(24px,4vw,48px);background:#f5f5f5;border-top:1px solid var(--border)}
.footer-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}
.footer-logo{height:18px;opacity:.4;margin-bottom:8px}
.footer-tag{font-size:10px;color:var(--light-gray);letter-spacing:2px;font-family:var(--font-heading)}
.footer-copy{font-size:11px;color:var(--light-gray);font-family:var(--font-heading);letter-spacing:.5px}
@media(max-width:768px){.footer-inner{flex-direction:column;gap:20px;text-align:center}}

/* ===== Animations ===== */
.fade-in{opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease-expo),transform 1s var(--ease-expo)}
.fade-in.visible{opacity:1;transform:translateY(0)}
.d1{transition-delay:.15s}.d2{transition-delay:.3s}.d3{transition-delay:.45s}.d4{transition-delay:.6s}

.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease-expo),transform .8s var(--ease-expo)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Staggered reveal for case cards */
.cases-grid .case-card:nth-child(2) .reveal,.cases-grid .case-card:nth-child(2).reveal{transition-delay:.08s}
.cases-grid .case-card:nth-child(3) .reveal,.cases-grid .case-card:nth-child(3).reveal{transition-delay:.16s}
.cases-grid .case-card:nth-child(4) .reveal,.cases-grid .case-card:nth-child(4).reveal{transition-delay:.24s}
.cases-grid .case-card:nth-child(5) .reveal,.cases-grid .case-card:nth-child(5).reveal{transition-delay:.32s}

/* ===== Cookie Banner ===== */
.cookie-banner{
  position:fixed;bottom:0;left:0;right:0;z-index:200;
  background:rgba(26,26,26,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  padding:20px clamp(24px,4vw,48px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  border-top:1px solid rgba(255,255,255,.06);
  transform:translateY(100%);opacity:0;
  transition:transform .5s var(--ease-expo),opacity .5s var(--ease-expo);
}
.cookie-banner.show{transform:translateY(0);opacity:1}
.cookie-banner p{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;flex:1;letter-spacing:.02em}
.cookie-banner a{color:var(--mint);text-decoration:underline;text-underline-offset:2px}
.cookie-btns{display:flex;gap:10px;flex-shrink:0}
.cookie-accept{padding:8px 24px;background:#fff;color:var(--dark);font-size:13px;font-weight:500;border:none;border-radius:3px;cursor:pointer;font-family:var(--font-body);transition:opacity .3s}
.cookie-accept:hover{opacity:.85}
.cookie-decline{padding:8px 24px;background:transparent;color:rgba(255,255,255,.4);font-size:13px;border:1px solid rgba(255,255,255,.15);border-radius:3px;cursor:pointer;font-family:var(--font-body);transition:all .3s}
.cookie-decline:hover{border-color:rgba(255,255,255,.3);color:rgba(255,255,255,.7)}
@media(max-width:768px){.cookie-banner{flex-direction:column;text-align:center}.cookie-btns{width:100%;justify-content:center}}