/* ==========================================================================
   TSiD — Technology built in-house. Growth powered by AI, automation & agents.
   Brand system per TSiD Brand Guidelines Vol.01 · 2026
   Palette: disciplined monochrome  |  Type: Cormorant Garamond + Inter
   ========================================================================== */

:root{
  /* Colour — drawn from the logo artwork */
  --ink:      #1c1c1c;   /* primary text & wordmark */
  --charcoal: #262626;   /* dark surfaces */
  --charcoal-2:#1a1a1a;
  --slate:    #6e6e6e;   /* secondary body text */
  --laurel:   #a6a6a6;   /* the single accent — the sprig */
  --paper:    #faf8f5;   /* base background */
  --paper-2:  #f2efe9;   /* alt panel */
  --line:     #e4e0d8;   /* hairlines */
  --line-dark:#3a3a3a;
  --white:    #ffffff;

  /* Type */
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --sans:  "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;

  /* Rhythm */
  --maxw: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --section-y: clamp(64px, 9vw, 130px);
  --radius: 4px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  font-size:17px;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul{list-style:none}
::selection{background:var(--ink);color:var(--paper)}

/* ---------- Typography ---------- */
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.08;letter-spacing:-.01em;color:var(--ink)}
.display{
  font-weight:300;
  font-size:clamp(2.6rem,6.6vw,5.4rem);
  line-height:1.02;
  letter-spacing:-.02em;
}
h2.section-title{font-weight:300;font-size:clamp(2rem,4.6vw,3.4rem);letter-spacing:-.015em}
h3{font-size:clamp(1.35rem,2.4vw,1.8rem)}
p{color:var(--slate)}
.lead{font-size:clamp(1.05rem,1.6vw,1.28rem);color:var(--ink);line-height:1.6}

.eyebrow{
  font-family:var(--sans);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--slate);
  display:inline-flex;
  align-items:center;
  gap:.7em;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--laurel)}
.eyebrow.center::before{display:none}

/* Spark divider glyph */
.spark{
  display:block;text-align:center;color:var(--laurel);
  font-size:1.1rem;line-height:1;margin:0 auto;
}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
section{position:relative}
.section-pad{padding-block:var(--section-y)}
.section-head{max-width:720px;margin-bottom:clamp(38px,5vw,64px)}
.section-head.center{margin-inline:auto;text-align:center}
.section-head .eyebrow{margin-bottom:20px}
.section-head p{margin-top:18px;font-size:1.08rem}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--sans);font-weight:500;font-size:.95rem;letter-spacing:.01em;
  padding:.95em 1.7em;border-radius:var(--radius);
  transition:all .35s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn .arw{transition:transform .35s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-70%;width:45%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.16),transparent);
  transform:skewX(-20deg);transition:left .65s var(--ease);
}
.btn-primary:hover::after{left:135%}
.btn-primary:hover{background:var(--charcoal);transform:translateY(-2px);box-shadow:0 14px 30px -14px rgba(0,0,0,.5)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:var(--white);transform:translateY(-2px)}
.btn-outline-light{border-color:rgba(255,255,255,.35);color:var(--paper)}
.btn-outline-light:hover{border-color:var(--paper);background:var(--paper);color:var(--ink)}

/* ---------- Navigation ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:100;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),padding .4s var(--ease);
  padding-block:18px;
}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-logo img{height:34px;width:auto;transition:opacity .3s}
.nav-logo .logo-light{display:none}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  font-size:.92rem;font-weight:500;color:var(--ink);letter-spacing:.01em;position:relative;padding:4px 0;
}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:currentColor;transition:width .3s var(--ease)}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav.scrolled{background:rgba(250,248,245,.85);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line);padding-block:12px}

/* Mobile nav — hidden everywhere except inside the mobile breakpoint */
.nav-mobile{display:none}
.nav-overlay{display:none}
.nav-toggle{display:none;width:42px;height:42px;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.nav-toggle span{width:22px;height:1.6px;background:var(--ink);transition:.3s var(--ease)}
.nav-toggle.open span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;padding-top:clamp(140px,20vh,200px);padding-bottom:clamp(70px,10vw,120px);overflow:hidden}
.hero-inner{max-width:960px;position:relative;z-index:2}
.hero .eyebrow{margin-bottom:26px}
.hero h1{margin-bottom:28px}
.hero h1 em{font-style:italic;color:var(--slate)}
.hero .lead{max-width:620px;margin-bottom:38px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-sprig{
  position:absolute;top:8%;right:-4%;width:min(46vw,620px);z-index:1;
  opacity:.5;pointer-events:none;
  transform:rotate(-6deg);
  filter:grayscale(1);
  animation:sprigFloat 10s ease-in-out infinite;
}
@keyframes sprigFloat{
  0%,100%{transform:rotate(-6deg) translateY(0)}
  50%{transform:rotate(-4.5deg) translateY(-14px)}
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:38px;margin-top:64px;padding-top:34px;border-top:1px solid var(--line);
}
.hero-meta .stat{min-width:120px}
.hero-meta .num{font-family:var(--serif);font-weight:400;font-size:clamp(2rem,3.4vw,2.8rem);line-height:1;color:var(--ink)}
.hero-meta .lbl{font-size:.82rem;color:var(--slate);margin-top:8px;letter-spacing:.02em}

/* ---------- Marquee / trust ---------- */
.strip{border-block:1px solid var(--line);background:var(--paper-2);overflow:hidden}
.strip-track{display:flex;align-items:center;gap:44px;width:max-content;padding-block:22px;animation:marquee 32s linear infinite}
.strip:hover .strip-track{animation-play-state:paused}
.strip span{font-size:.82rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);white-space:nowrap}
.strip .dot{color:var(--laurel)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- Scroll progress hairline ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--ink);z-index:200}

/* ---------- Essence / about ---------- */
.essence{background:var(--paper)}
.essence-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,7vw,110px);align-items:start}
.essence-grid .big{font-family:var(--serif);font-weight:300;font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.22;letter-spacing:-.01em;color:var(--ink)}
.essence-grid .big em{font-style:italic;color:var(--slate)}
.pillars{display:grid;gap:26px}
.pillar{display:flex;gap:18px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.pillar:last-child{border-bottom:none;padding-bottom:0}
.pillar .k{font-family:var(--serif);font-size:1.5rem;color:var(--laurel);line-height:1;min-width:26px}
.pillar h4{font-family:var(--sans);font-size:1rem;font-weight:600;margin-bottom:6px;color:var(--ink)}
.pillar p{font-size:.95rem}

/* ---------- Two practices ---------- */
.practices{background:var(--charcoal);color:var(--paper);position:relative;overflow:hidden}
.practices .section-title,.practices h3,.practices h4{color:var(--paper)}
.practices .eyebrow{color:var(--laurel)}
.practices .eyebrow::before{background:var(--laurel)}
.practices .section-head p{color:#c9c6c0}
.prac-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,3vw,40px)}
.prac-card{
  border:1px solid var(--line-dark);border-radius:var(--radius);
  padding:clamp(30px,4vw,48px);
  background:linear-gradient(180deg,rgba(255,255,255,.03),transparent);
  transition:border-color .4s var(--ease),transform .4s var(--ease);
}
.prac-card:hover{border-color:var(--laurel);transform:translateY(-4px)}
.prac-tag{font-size:.72rem;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--laurel);margin-bottom:18px;display:block}
.prac-card h3{font-size:clamp(1.8rem,2.8vw,2.4rem);font-weight:300;margin-bottom:8px}
.prac-card .sub{color:#c9c6c0;font-size:1rem;margin-bottom:26px}
.prac-list{display:grid;gap:0}
.prac-list li{
  display:flex;align-items:center;gap:12px;
  padding:13px 0;border-top:1px solid var(--line-dark);
  font-size:.98rem;color:#e7e5e0;
}
.prac-list li::before{content:"→";color:var(--laurel);font-size:.9rem}

/* ---------- Services ---------- */
.services{background:var(--paper)}
.svc-cats{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px;justify-content:center}
.svc-filter{
  font-size:.86rem;font-weight:500;padding:.62em 1.2em;border-radius:100px;
  border:1px solid var(--line);color:var(--slate);transition:.3s var(--ease);background:var(--white)
}
.svc-filter:hover{border-color:var(--ink);color:var(--ink)}
.svc-filter.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.svc{
  background:var(--paper);padding:clamp(26px,3vw,40px);
  transition:background .35s var(--ease),transform .35s var(--ease);
  position:relative;min-height:220px;display:flex;flex-direction:column;
}
.svc:hover{background:var(--white)}
.svc .idx{font-family:var(--serif);font-size:.95rem;color:var(--laurel);margin-bottom:20px}
.svc h4{font-family:var(--serif);font-weight:500;font-size:1.4rem;margin-bottom:12px;letter-spacing:-.01em}
.svc p{font-size:.92rem;line-height:1.6}
.svc .tags{margin-top:auto;padding-top:18px;display:flex;flex-wrap:wrap;gap:6px}
.svc .tags span{font-size:.72rem;color:var(--slate);background:var(--paper-2);padding:3px 9px;border-radius:100px}
.svc.hide{display:none}
.svc-note{margin-top:30px;text-align:center;font-size:.9rem;color:var(--slate)}

/* ---------- Why / differentiators ---------- */
.why{background:var(--paper-2)}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(24px,3vw,40px)}
.why-item .n{font-family:var(--serif);font-weight:300;font-size:2.6rem;color:var(--laurel);line-height:1;margin-bottom:16px}
.why-item h4{font-family:var(--sans);font-size:1.05rem;font-weight:600;margin-bottom:10px}
.why-item p{font-size:.94rem}

/* ---------- Process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(22px,2.5vw,36px);counter-reset:step}
.step{position:relative;padding-top:30px;border-top:2px solid var(--ink)}
.step .st-num{font-family:var(--sans);font-size:.75rem;font-weight:600;letter-spacing:.2em;color:var(--slate);margin-bottom:14px}
.step h4{font-family:var(--serif);font-weight:500;font-size:1.5rem;margin-bottom:10px}
.step p{font-size:.93rem}

/* ---------- Work / showcase ---------- */
.work{background:var(--charcoal);color:var(--paper);overflow:hidden}
.work .section-title,.work h3{color:var(--paper)}
.work .eyebrow{color:var(--laurel)}
.work .eyebrow::before{background:var(--laurel)}
.work .section-head p{color:#c9c6c0}
.work-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(14px,1.6vw,22px)}
.work-card{
  position:relative;border-radius:var(--radius);overflow:hidden;background:var(--charcoal-2);
  border:1px solid var(--line-dark);
}
.work-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .7s var(--ease);filter:grayscale(.25)}
.work-card:hover img{transform:scale(1.05);filter:grayscale(0)}
.work-card .cap{position:absolute;inset:auto 0 0 0;padding:18px 20px;background:linear-gradient(0deg,rgba(0,0,0,.82),transparent)}
.work-card .cap .t{font-family:var(--serif);font-size:1.15rem;color:var(--paper)}
.work-card .cap .s{font-size:.76rem;color:var(--laurel);letter-spacing:.08em;text-transform:uppercase;margin-top:2px}
.w-span-3{grid-column:span 3}.w-span-2{grid-column:span 2}

/* ---------- Case studies (dark) ---------- */
.cs-cats{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px;justify-content:center}
.cs-filter{
  font-size:.86rem;font-weight:500;padding:.62em 1.2em;border-radius:100px;
  border:1px solid var(--line-dark);color:#c9c6c0;transition:.3s var(--ease);background:transparent
}
.cs-filter:hover{border-color:var(--laurel);color:var(--paper)}
.cs-filter.active{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.cs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,26px)}
.cs-card{
  background:var(--charcoal-2);border:1px solid var(--line-dark);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .4s var(--ease),transform .4s var(--ease);
}
.cs-card:hover{border-color:var(--laurel);transform:translateY(-4px)}
.cs-card.hide{display:none}
.cs-media{aspect-ratio:16/10;background:#0d0d0d;overflow:hidden}
.cs-media video,.cs-media img{width:100%;height:100%;display:block}
.cs-media video{object-fit:contain}
.cs-media img{object-fit:cover;transition:transform .7s var(--ease);filter:grayscale(.25)}
.cs-card:hover .cs-media img{transform:scale(1.05);filter:grayscale(0)}
.cs-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:8px}
.cs-tag{font-size:.7rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--laurel)}
.cs-body h4{font-family:var(--serif);font-weight:500;font-size:1.3rem;color:var(--paper);letter-spacing:-.01em}
.cs-body p{font-size:.9rem;line-height:1.6;color:#b8b5af}

/* ---------- Consultancy in depth ---------- */
.consultancy{background:var(--paper-2)}
.con-row{
  display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(30px,5vw,80px);align-items:center;
  padding-block:clamp(36px,5vw,64px);border-top:1px solid var(--line);
}
.con-row:first-of-type{border-top:none;padding-top:0}
.con-row:last-of-type{padding-bottom:0}
.con-row.rev .con-media{order:2}
.con-row.rev .con-text{order:1}
.con-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--white)}
.con-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .7s var(--ease)}
.con-row:hover .con-media img{transform:scale(1.04)}
.con-idx{font-family:var(--serif);font-size:1rem;color:var(--laurel);display:block;margin-bottom:12px}
.con-text h3{font-weight:400;font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:14px;letter-spacing:-.01em}
.con-text>p{font-size:.98rem;line-height:1.7}
.con-list{margin-top:20px;display:grid;gap:0}
.con-list li{
  display:flex;align-items:baseline;gap:12px;padding:10px 0;
  border-top:1px solid var(--line);font-size:.93rem;color:var(--ink);
}
.con-list li::before{content:"→";color:var(--laurel);font-size:.85rem;flex:none}
.con-list a{text-decoration:underline;text-underline-offset:3px}
.con-note{margin-top:18px;font-family:var(--serif);font-style:italic;font-size:1.02rem;color:var(--slate)}

/* Consultancy rows glide in from the sides as they reveal */
.con-row .con-media{opacity:0;transform:translateX(-36px);transition:opacity .9s var(--ease) .1s,transform .9s var(--ease) .1s}
.con-row .con-text{opacity:0;transform:translateX(36px);transition:opacity .9s var(--ease) .22s,transform .9s var(--ease) .22s}
.con-row.rev .con-media{transform:translateX(36px)}
.con-row.rev .con-text{transform:translateX(-36px)}
.con-row.in .con-media,.con-row.in .con-text{opacity:1;transform:none}

/* ---------- Industries ---------- */
.industries{background:var(--paper)}
.ind-wrap{display:flex;flex-wrap:wrap;gap:12px}
.ind-wrap span{
  font-size:.95rem;font-weight:500;color:var(--ink);
  border:1px solid var(--line);border-radius:100px;padding:.6em 1.25em;background:var(--white);
  transition:.3s var(--ease)
}
.ind-wrap span:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:var(--paper);text-align:center;overflow:hidden;position:relative}
.cta-band h2{color:var(--paper);font-weight:300;font-size:clamp(2rem,4.6vw,3.4rem);max-width:800px;margin:0 auto 22px}
.cta-band p{color:#c9c6c0;max-width:560px;margin:0 auto 34px}
.cta-band .hero-cta{justify-content:center}

/* ---------- Contact ---------- */
.contact{background:var(--paper-2)}
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(40px,6vw,90px);align-items:start}
.contact-info .lead{margin:18px 0 34px}
.info-list{display:grid;gap:2px;margin-bottom:34px}
.info-row{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-top:1px solid var(--line)}
.info-row:last-child{border-bottom:1px solid var(--line)}
.info-row .ico{width:22px;height:22px;flex:none;margin-top:3px;color:var(--laurel)}
.info-row .lbl{font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--slate);margin-bottom:3px}
.info-row .val{font-size:1.05rem;color:var(--ink);font-weight:500}
.info-row a.val:hover{color:var(--laurel)}
.social-row{display:flex;gap:12px}
.social-row a{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--ink);transition:.3s var(--ease)}
.social-row a:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.social-row svg{width:18px;height:18px}

/* Form */
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,3.4vw,44px)}
.form-card h3{font-weight:400;margin-bottom:6px}
.form-card>p{font-size:.92rem;margin-bottom:26px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--sans);font-size:1rem;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:.85em 1em;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)
}
.field textarea{resize:vertical;min-height:120px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(28,28,28,.06)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-card .btn-primary{width:100%;justify-content:center;margin-top:6px}
.form-note{font-size:.8rem;color:var(--slate);margin-top:16px;text-align:center}
.form-status{font-size:.92rem;margin-top:16px;padding:12px 16px;border-radius:var(--radius);display:none}
.form-status.show{display:block}
.form-status.ok{background:#e9f2ec;color:#1f5133;border:1px solid #cfe3d6}
.form-status.err{background:#f6eaea;color:#7a2b2b;border:1px solid #e6cccc}
.form-status.load{background:var(--paper-2);color:var(--slate);border:1px solid var(--line)}

/* ---------- Footer ---------- */
.footer{background:var(--charcoal-2);color:#cfcdc8;padding-block:clamp(56px,7vw,84px) 30px;position:relative;overflow:hidden}
.footer a{color:#cfcdc8}
.footer a:hover{color:var(--paper)}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;border-bottom:1px solid var(--line-dark)}
.footer-brand img{height:38px;margin-bottom:22px}
.footer-brand p{color:#9a988f;font-size:.95rem;max-width:320px}
.footer-tag{font-family:var(--serif);font-style:italic;font-size:1.2rem;color:var(--laurel);margin-top:20px}
.footer-col h5{font-family:var(--sans);font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#7d7b74;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:.94rem}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;padding-top:28px;font-size:.84rem;color:#807e77}
.footer-bottom .spark{display:inline;margin:0 8px}

/* ---------- Floating WhatsApp ---------- */
.wa-float{
  position:fixed;right:22px;bottom:22px;z-index:90;
  width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;
  display:grid;place-items:center;box-shadow:0 10px 26px -8px rgba(0,0,0,.5);
  transition:transform .3s var(--ease);
}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px}
@keyframes waPulse{
  0%{box-shadow:0 10px 26px -8px rgba(0,0,0,.5),0 0 0 0 rgba(37,211,102,.4)}
  70%{box-shadow:0 10px 26px -8px rgba(0,0,0,.5),0 0 0 15px rgba(37,211,102,0)}
  100%{box-shadow:0 10px 26px -8px rgba(0,0,0,.5),0 0 0 0 rgba(37,211,102,0)}
}
.wa-float{animation:waPulse 2.8s infinite}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .con-row .con-media,.con-row .con-text{opacity:1;transform:none;transition:none}
  .strip-track,.hero-sprig,.wa-float{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .svc-grid{grid-template-columns:repeat(2,1fr)}
  .why-grid,.process-grid{grid-template-columns:repeat(2,1fr);gap:36px 30px}
  .work-grid{grid-template-columns:repeat(4,1fr)}
  .cs-grid{grid-template-columns:repeat(2,1fr)}
  .w-span-3{grid-column:span 2}
  .footer-top{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:820px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:flex}
  .nav-mobile{
    position:fixed;inset:0 0 0 auto;width:min(84vw,340px);z-index:99;
    background:var(--paper);box-shadow:-20px 0 60px -20px rgba(0,0,0,.4);
    transform:translateX(100%);transition:transform .45s var(--ease);
    display:flex;flex-direction:column;gap:6px;padding:100px 32px 40px
  }
  .nav-mobile.open{transform:translateX(0)}
  .nav-mobile a{font-size:1.15rem;font-family:var(--serif);padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-mobile .btn{margin-top:20px;justify-content:center}
  .nav-overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:98;opacity:0;visibility:hidden;transition:.4s}
  .nav-overlay.open{opacity:1;visibility:visible}
  .essence-grid,.prac-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .con-row{grid-template-columns:1fr;gap:26px}
  .con-row.rev .con-media{order:1}
  .con-row.rev .con-text{order:2}
  .hero-sprig{opacity:.28;width:70vw;top:auto;bottom:2%}
}
@media (max-width:640px){
  body{font-size:16px}
  .svc-grid{grid-template-columns:1fr}
  .why-grid,.process-grid,.work-grid,.cs-grid{grid-template-columns:1fr}
  .w-span-3,.w-span-2{grid-column:span 1}
  .field-row{grid-template-columns:1fr}
  .hero-meta{gap:26px}
  .footer-top{grid-template-columns:1fr}
  .step{border-top-width:1.6px}
}