/* =========================================================
   Brenda Costa — Portfolio
   Design system: Apple-inspired, neutral palette (no accent)
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap');

:root{
  --bg:#000000;
  --bg-elevated:#1c1c1e;
  --card:#161617;
  --card-hover:#1f1f21;
  --text:#f5f5f7;
  --text-secondary:rgba(245,245,247,0.62);
  --text-tertiary:rgba(245,245,247,0.4);
  --border:rgba(255,255,255,0.1);
  --border-strong:rgba(255,255,255,0.18);
  --nav-bg:rgba(0,0,0,0.6);
  --shadow:0 20px 60px rgba(0,0,0,0.5);
  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --ease:cubic-bezier(.16,1,.3,1);
  /* subtle purple→blue accent */
  --accent-1:#8b5cf6;
  --accent-2:#3b82f6;
  --accent-grad:linear-gradient(120deg, var(--accent-1), var(--accent-2));
  --accent-soft:rgba(124,105,246,0.16);
  --accent-ring:rgba(124,105,246,0.55);
  --font-display:"Space Grotesk", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Helvetica Neue", Arial, sans-serif;
}

html[data-theme="light"]{
  --bg:#f5f5f7;
  --bg-elevated:#ffffff;
  --card:#ffffff;
  --card-hover:#fbfbfd;
  --text:#1d1d1f;
  --text-secondary:rgba(29,29,31,0.7);
  --text-tertiary:rgba(29,29,31,0.56);
  --border:rgba(0,0,0,0.08);
  --border-strong:rgba(0,0,0,0.14);
  --nav-bg:rgba(245,245,247,0.7);
  --shadow:0 20px 60px rgba(0,0,0,0.1);
  --accent-soft:rgba(99,80,220,0.12);
  --accent-ring:rgba(99,80,220,0.5);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
  transition:background .5s var(--ease), color .5s var(--ease);
  overflow-x:hidden;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
button{font-family:inherit;}

.wrap{
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Accent: selection & focus ---------- */
::selection{ background:var(--accent-soft); color:var(--text); }
:focus-visible{
  outline:2px solid var(--accent-ring);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- Typography ---------- */
h1,h2,h3,h4{
  margin:0;
  font-weight:600;
  letter-spacing:-0.03em;
  line-height:1.05;
}
.display-xl,.display-lg,.display-md{
  font-family:var(--font-display);
  font-weight:600;
}
.eyebrow{
  font-size:13px;
  font-weight:600;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--text-tertiary);
  margin:0 0 14px;
}
.display-xl{
  font-size:clamp(42px,7vw,96px);
  font-weight:600;
  letter-spacing:-0.04em;
}
.display-lg{
  font-size:clamp(34px,5vw,64px);
  font-weight:600;
  letter-spacing:-0.035em;
}
.display-md{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:600;
  letter-spacing:-0.03em;
}
p.lead{
  font-size:clamp(17px,2vw,21px);
  color:var(--text-secondary);
  line-height:1.5;
  font-weight:400;
}
p{
  line-height:1.65;
  color:var(--text-secondary);
}

/* word reveal spans */
.reveal-word{
  display:inline-block;
  opacity:0;
  filter:blur(6px);
  transform:translateY(14px);
  transition:opacity .7s var(--ease), transform .7s var(--ease), filter .7s var(--ease);
}
.reveal-word.in{
  opacity:1;
  transform:translateY(0);
  filter:blur(0);
}

/* generic scroll reveal */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.in{
  opacity:1;
  transform:translateY(0);
}

/* ---------- Header ---------- */
header.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  background:var(--nav-bg);
  border-bottom:1px solid var(--border);
  transition:background .5s var(--ease), border-color .5s var(--ease);
}
.nav-inner{
  max-width:1160px;
  margin:0 auto;
  padding:0 24px;
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.logo{
  font-size:17px;
  font-weight:600;
  letter-spacing:-0.01em;
  display:flex;
  align-items:center;
  gap:8px;
}
.logo .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent-grad);
  box-shadow:0 0 10px var(--accent-soft);
}
nav.main-nav{
  display:flex;
  gap:34px;
  align-items:center;
}
nav.main-nav a{
  font-size:13px;
  color:var(--text-secondary);
  transition:color .3s var(--ease);
  position:relative;
  padding:4px 0;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color:var(--text);
}
nav.main-nav a.active::after{
  content:"";
  position:absolute;
  bottom:-6px; left:0; right:0;
  height:2px;
  background:var(--accent-grad);
  border-radius:2px;
}
.nav-controls{
  display:flex;
  align-items:center;
  gap:10px;
}
.icon-btn{
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--border);
  background:var(--card);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  color:var(--text);
  transition:background .3s var(--ease), transform .3s var(--ease), border-color .3s var(--ease);
}
.icon-btn:hover{
  background:var(--card-hover);
  transform:scale(1.06);
}
.icon-btn svg{width:16px;height:16px;}
.lang-btn{
  width:auto;
  padding:0 12px;
  border-radius:17px;
  font-size:12px;
  font-weight:600;
  letter-spacing:0.02em;
}
.menu-toggle{
  display:none;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 22px;
  border-radius:100px;
  font-size:15px;
  font-weight:500;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .3s var(--ease), background .3s var(--ease), opacity .3s var(--ease);
}
.btn-primary{
  background:var(--text);
  color:var(--bg);
}
.btn-primary:hover{ transform:translateY(-2px); opacity:.9; }
.btn-ghost{
  background:transparent;
  border-color:var(--border-strong);
  color:var(--text);
}
.btn-ghost:hover{
  background:var(--card);
  transform:translateY(-2px);
}
.btn-row{display:flex; gap:14px; flex-wrap:wrap;}

/* ---------- Hero ---------- */
.hero{
  min-height:92vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  padding:160px 24px 100px;
  position:relative;
}
.dotted-surface{
  position:absolute;
  inset:0;
  z-index:0;
  pointer-events:none;
  overflow:hidden;
}
.dotted-surface canvas{
  display:block;
}
/* keep hero content above the animated background */
.hero > :not(.dotted-surface):not(.hero-spot){
  position:relative;
  z-index:2;
}
.hero-spot{
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:radial-gradient(600px circle at var(--x,50%) var(--y,30%), rgba(255,255,255,0.05), transparent 60%);
  transition:background .2s ease-out;
}
html[data-theme="light"] .hero-spot{
  background:radial-gradient(600px circle at var(--x,50%) var(--y,30%), rgba(0,0,0,0.035), transparent 60%);
}
.hero h1{ max-width:920px; }
.hero p.lead{
  max-width:600px;
  margin:24px auto 36px;
}
.scroll-cue{
  position:absolute;
  bottom:36px;
  left:50%;
  transform:translateX(-50%);
  width:22px;height:36px;
  border:1.5px solid var(--border-strong);
  border-radius:14px;
  display:flex;
  justify-content:center;
  padding-top:6px;
}
.scroll-cue span{
  width:3px;height:8px;
  border-radius:2px;
  background:var(--accent-grad);
  animation:scrollcue 1.8s infinite;
}
@keyframes scrollcue{
  0%{transform:translateY(0); opacity:1;}
  70%{transform:translateY(10px); opacity:0;}
  100%{opacity:0;}
}

/* ---------- Sections ---------- */
section{
  padding:120px 0;
}
.section-head{
  max-width:680px;
  margin:0 0 60px;
}
.section-head.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}

/* ---------- Cards ---------- */
.grid{
  display:grid;
  gap:20px;
}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:32px;
  transition:transform .5s var(--ease), background .4s var(--ease), border-color .4s var(--ease), box-shadow .5s var(--ease);
}
.card:hover{
  transform:translateY(-6px) scale(1.015);
  background:var(--card-hover);
  border-color:var(--border-strong);
  box-shadow:var(--shadow);
}
.card .icon-circle{
  width:44px;height:44px;
  border-radius:50%;
  background:var(--bg-elevated);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:22px;
}
.card h3{
  font-size:19px;
  margin-bottom:10px;
  letter-spacing:-0.01em;
}
.card p{
  font-size:14.5px;
  margin:0;
}

.project-card{
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border);
  background:var(--card);
  transition:transform .5s var(--ease), box-shadow .5s var(--ease), border-color .4s var(--ease);
}
.project-card:hover{
  transform:translateY(-8px) scale(1.02);
  box-shadow:var(--shadow);
  border-color:var(--border-strong);
}
.project-thumb{
  aspect-ratio:4/3;
  background:var(--bg-elevated);
  overflow:hidden;
}
.project-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s var(--ease);
}
.project-card:hover .project-thumb img{
  transform:scale(1.08);
}
.project-info{padding:22px 24px 26px;}
.project-info .tag{
  font-size:11.5px;
  color:var(--text-tertiary);
  text-transform:uppercase;
  letter-spacing:0.06em;
  font-weight:600;
}
.project-info h3{ font-size:18px; margin:8px 0 6px; }
.project-info p{ font-size:14px; margin:0; }

/* ---------- Stats / counters ---------- */
.stat-row{
  display:flex;
  gap:60px;
  flex-wrap:wrap;
}
.stat .num{
  font-size:clamp(36px,4vw,54px);
  font-weight:600;
  letter-spacing:-0.03em;
}
.stat .label{
  font-size:14px;
  color:var(--text-tertiary);
  margin-top:6px;
}

/* ---------- Timeline ---------- */
.timeline{
  border-left:1px solid var(--border);
  padding-left:36px;
  display:flex;
  flex-direction:column;
  gap:52px;
}
.timeline-item{position:relative;}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-41.5px; top:4px;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--text);
  box-shadow:0 0 0 4px var(--bg);
}
.timeline-item .period{
  font-size:12.5px;
  color:var(--text-tertiary);
  text-transform:uppercase;
  letter-spacing:0.06em;
  font-weight:600;
  margin-bottom:8px;
}
.timeline-item h3{ font-size:20px; margin-bottom:6px;}
.timeline-item .role{ color:var(--text-secondary); font-size:14.5px; margin-bottom:14px;}
.timeline-item ul{margin:0; padding-left:18px;}
.timeline-item li{
  font-size:14.5px;
  color:var(--text-secondary);
  margin-bottom:8px;
  line-height:1.6;
}

/* ---------- Skills tags ---------- */
.tags{display:flex; flex-wrap:wrap; gap:10px;}
.tag-pill{
  padding:9px 16px;
  border-radius:100px;
  border:1px solid var(--border);
  background:var(--card);
  font-size:13.5px;
  color:var(--text-secondary);
  transition:transform .3s var(--ease), border-color .3s var(--ease), color .3s var(--ease);
}
.tag-pill:hover{
  transform:translateY(-3px);
  border-color:var(--border-strong);
  color:var(--text);
}

/* ---------- Marquee (animated tool pills) ---------- */
.marquee{
  position:relative;
  overflow:hidden;
  padding:6px 0;
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
          mask-image:linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee + .marquee{ margin-top:16px; }
.marquee-track{
  display:flex;
  gap:16px;
  width:max-content;
  will-change:transform;
  animation:marquee-left 42s linear infinite;
}
.marquee-track.reverse{ animation-name:marquee-right; animation-duration:52s; }
.marquee:hover .marquee-track{ animation-play-state:paused; }
@keyframes marquee-left{ from{transform:translateX(0);} to{transform:translateX(-50%);} }
@keyframes marquee-right{ from{transform:translateX(-50%);} to{transform:translateX(0);} }
.marquee .pill{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:11px;
  white-space:nowrap;
  padding:14px 24px;
  border-radius:100px;
  border:1px solid var(--border);
  background:var(--card);
  color:var(--text-secondary);
  font-size:16px;
  letter-spacing:-0.01em;
  transition:transform .35s var(--ease), border-color .35s var(--ease), color .35s var(--ease), background .35s var(--ease);
}
.marquee .pill:hover{
  color:var(--text);
  background:var(--card-hover);
  border-color:var(--border-strong);
  transform:translateY(-3px);
}
.marquee .pill .pdot{
  width:7px; height:7px;
  border-radius:50%;
  background:var(--text-tertiary);
  flex:0 0 auto;
  transition:background .35s var(--ease);
}
.marquee .pill:hover .pdot{ background:var(--text); }
@media (prefers-reduced-motion: reduce){
  .marquee{ -webkit-mask-image:none; mask-image:none; }
  .marquee-track{ animation:none; flex-wrap:wrap; width:auto; }
  .marquee-track .pill.dup{ display:none; }
}

/* ---------- Footer ---------- */
footer{
  border-top:1px solid var(--border);
  padding:70px 0 40px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr repeat(3,1fr);
  gap:32px;
  margin-bottom:60px;
}
.footer-col h4{
  font-size:13px;
  color:var(--text-tertiary);
  text-transform:uppercase;
  letter-spacing:0.06em;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col a, .footer-col p{
  display:block;
  font-size:14px;
  color:var(--text-secondary);
  margin-bottom:10px;
}
.footer-col a:hover{ color:var(--text); }
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding-top:26px;
  border-top:1px solid var(--border);
  font-size:12.5px;
  color:var(--text-tertiary);
  flex-wrap:wrap;
  gap:12px;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{
  padding:170px 0 80px;
}
.page-hero .eyebrow{margin-bottom:18px;}
.page-hero p.lead{max-width:640px; margin-top:20px;}

/* ---------- Home services teaser ---------- */
.svc-teaser{
  padding:52px;
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:48px;
  align-items:center;
}
.svc-teaser .btn{ white-space:nowrap; }
@media (max-width:820px){
  .svc-teaser{ grid-template-columns:1fr; gap:28px; padding:34px; }
}
@media (max-width:520px){
  .svc-teaser{ padding:26px; }
}

/* Featured LeadMap card (home) */
.leadmap-featured{ padding:56px; display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
@media (max-width:820px){
  .leadmap-featured{ grid-template-columns:1fr; gap:32px; padding:36px; }
  .leadmap-featured > div:last-child{ max-width:280px; margin:0 auto; width:100%; }
}
@media (max-width:520px){ .leadmap-featured{ padding:26px; } }

/* Bio card (about) */
.bio-card{ padding:48px; display:grid; grid-template-columns:220px 1fr; gap:48px; align-items:center; }
@media (max-width:760px){
  .bio-card{ grid-template-columns:1fr; gap:26px; padding:32px; }
  .bio-card > div:first-child{ margin:0 auto; }
}
@media (max-width:520px){ .bio-card{ padding:24px; } }

/* ---------- Feature cards (centered) ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  max-width:1040px;
  margin:0 auto;
}
.feature-grid .card{
  text-align:center;
}
.feature-grid .card .icon-circle{
  margin-left:auto;
  margin-right:auto;
}
/* last row of 2 items, centered */
.feature-grid .card:nth-child(4){ grid-column:2 / 3; }
.feature-grid .card:nth-child(5){ grid-column:3 / 4; }

/* ---------- Showcase (detailed project) ---------- */
.showcase{
  padding:0;
  overflow:hidden;
  margin-bottom:24px;
}
.showcase-media{
  aspect-ratio:16/7;
  background:var(--bg-elevated);
  overflow:hidden;
  border-bottom:1px solid var(--border);
}
.showcase-media img{
  width:100%; height:100%; object-fit:cover;
}
.showcase-inner{ padding:32px 36px 36px; }
.showcase-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
}
.showcase-head h3{ font-size:23px; letter-spacing:-0.02em; margin:0; }
.showcase-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:100px;
  border:1px solid var(--border);
  background:var(--bg-elevated);
  color:var(--text-secondary);
  font-size:13px;
  cursor:pointer;
  white-space:nowrap;
  transition:color .3s var(--ease), border-color .3s var(--ease);
}
.showcase-toggle:hover{ color:var(--text); border-color:var(--border-strong); }
.showcase-toggle svg{ transition:transform .4s var(--ease); }
.showcase.open .showcase-toggle svg{ transform:rotate(180deg); }
.showcase-toggle .more{ display:inline; }
.showcase-toggle .less{ display:none; }
.showcase.open .showcase-toggle .more{ display:none; }
.showcase.open .showcase-toggle .less{ display:inline; }

.showcase-tags{ margin-top:16px; }
.showcase-body{
  display:none;
  margin-top:26px;
  padding-top:26px;
  border-top:1px solid var(--border);
}
.showcase.open .showcase-body{ display:block; }
.showcase-body .lead-sm{
  font-size:15px; color:var(--text-secondary); line-height:1.7; margin:0 0 26px;
}

.detail-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  padding:22px;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  background:var(--bg-elevated);
  margin-bottom:26px;
}
.detail-grid .k{
  font-size:11.5px; text-transform:uppercase; letter-spacing:0.06em;
  color:var(--text-tertiary); font-weight:600; margin-bottom:6px;
}
.detail-grid .v{ font-size:14.5px; color:var(--text); }

.detail-block{ margin-bottom:26px; }
.detail-block:last-child{ margin-bottom:0; }
.learned-block{
  padding:20px 22px;
  border-radius:var(--radius-md);
  background:var(--accent-soft);
  border:1px solid transparent;
}
.learned-block h4{ color:var(--text-secondary); }

/* ---------- CV download ---------- */
.cv-download{ display:flex; align-items:center; gap:14px; flex-wrap:wrap; }
.cv-toggle{
  display:inline-flex; padding:4px; gap:2px;
  border:1px solid var(--border); border-radius:100px; background:var(--card);
}
.cv-lang{
  border:none; background:transparent; color:var(--text-secondary);
  padding:8px 18px; border-radius:100px; font-size:13px; font-weight:600;
  cursor:pointer; font-family:inherit;
  transition:color .3s var(--ease), background .3s var(--ease);
}
.cv-lang:hover{ color:var(--text); }
.cv-lang.active{ background:var(--accent-grad); color:#fff; }
.cv-btn svg{ width:17px; height:17px; }

/* ---------- Services page ---------- */
.svc-badges{ display:flex; gap:10px; flex-wrap:wrap; margin-top:28px; }
.svc-badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 16px; border-radius:100px;
  border:1px solid var(--border); background:var(--card);
  font-size:13px; color:var(--text-secondary);
}
.svc-badge::before{
  content:""; width:6px; height:6px; border-radius:50%;
  background:var(--accent-grad);
}
.price-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; align-items:stretch; }
.price-card{ position:relative; display:flex; flex-direction:column; }
.price-card.featured{ border-color:var(--border-strong); }
.price-card.featured::before{
  content:""; position:absolute; inset:0; border-radius:var(--radius-lg);
  padding:1px; background:var(--accent-grad); -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude; pointer-events:none; opacity:.6;
}
.price-ribbon{
  position:absolute; top:-11px; left:50%; transform:translateX(-50%);
  padding:5px 14px; border-radius:100px; font-size:11.5px; font-weight:600;
  letter-spacing:0.04em; text-transform:uppercase; color:#fff;
  background:var(--accent-grad); white-space:nowrap;
}
.price-card h3{ font-size:21px; margin-bottom:8px; }
.price-desc{ font-size:14px; color:var(--text-secondary); margin:0 0 20px; min-height:60px; }
.price-list{ list-style:none; margin:0 0 22px; padding:0; }
.price-list li{
  display:flex; justify-content:space-between; align-items:center; gap:12px;
  padding:12px 0; border-bottom:1px solid var(--border); font-size:14.5px;
  color:var(--text-secondary);
}
.price-list li:last-child{ border-bottom:none; }
.price-list .val{ font-weight:600; color:var(--text); white-space:nowrap; }
.price-card .btn{ margin-top:auto; justify-content:center; }
.price-note{ font-size:13.5px; color:var(--text-tertiary); margin-top:22px; line-height:1.6; }

/* identity packages */
.pkg-price{ font-family:var(--font-display); font-size:34px; font-weight:600; letter-spacing:-0.02em; margin:6px 0 2px; }
.pkg-deadline{ font-size:12.5px; color:var(--text-tertiary); text-transform:uppercase; letter-spacing:0.05em; font-weight:600; margin-bottom:20px; }
.pkg-list{ list-style:none; margin:0 0 24px; padding:0; display:flex; flex-direction:column; gap:12px; }
.pkg-list li{ display:flex; gap:11px; font-size:14px; color:var(--text-secondary); line-height:1.5; }
.pkg-list li svg{ flex:0 0 auto; width:17px; height:17px; margin-top:2px; color:var(--text); }

/* accordion (FAQ) */
.accordion{ max-width:760px; margin:0 auto; border-top:1px solid var(--border); }
.acc-item{ border-bottom:1px solid var(--border); }
.acc-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  font-family:inherit; color:var(--text); font-size:16.5px; font-weight:500;
  padding:24px 44px 24px 0; position:relative;
}
.acc-q::after{
  content:"+"; position:absolute; right:6px; top:50%; transform:translateY(-50%);
  font-size:22px; font-weight:400; color:var(--text-tertiary); transition:transform .3s var(--ease), color .3s var(--ease);
}
.acc-item.open .acc-q::after{ content:"−"; color:var(--text); }
.acc-a{ max-height:0; overflow:hidden; transition:max-height .4s var(--ease); }
.acc-a p{ margin:0 0 24px; font-size:14.5px; color:var(--text-secondary); line-height:1.7; padding-right:20px; }

/* generic form fields (shared) */
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:12.5px; text-transform:uppercase; letter-spacing:0.05em; color:var(--text-tertiary); font-weight:600; margin-bottom:8px; }
.field input, .field select, .field textarea{
  width:100%; padding:13px 16px; border-radius:var(--radius-sm);
  border:1px solid var(--border); background:var(--bg-elevated); color:var(--text);
  font-family:inherit; font-size:15px; transition:border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--accent-ring); box-shadow:0 0 0 4px var(--accent-soft);
}
.field textarea{ resize:vertical; min-height:140px; line-height:1.6; }
.field select{ cursor:pointer; appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 16px center; padding-right:44px;
}
.form-status{ margin:14px 0 0; font-size:14.5px; display:none; }
.form-status.show{ display:block; }
.form-status.ok{ color:#34d399; }
.form-status.err{ color:#f87171; }
.hp{ position:absolute; left:-9999px; width:1px; height:1px; opacity:0; }

@media (max-width:900px){
  .price-grid{ grid-template-columns:1fr; }
  .price-desc{ min-height:0; }
}
@media (max-width:620px){ .form-row{ grid-template-columns:1fr; } }

/* ---------- Collapsible (read more) ---------- */
.collapse-wrap{
  position:relative;
  overflow:hidden;
  transition:max-height .55s var(--ease);
}
.collapse-fade{
  position:absolute; left:0; right:0; bottom:0;
  height:130px; pointer-events:none;
  background:linear-gradient(to bottom, transparent, var(--bg));
  opacity:0; transition:opacity .4s var(--ease);
}
.collapse-wrap.collapsed .collapse-fade{ opacity:1; }
@media (prefers-reduced-motion: reduce){
  .collapse-wrap{ transition:none; }
}
.detail-block > h4{
  font-size:12.5px; text-transform:uppercase; letter-spacing:0.06em;
  color:var(--text-tertiary); font-weight:600; margin:0 0 14px;
}
.role-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:12px;
}
.role-item{
  padding:16px 18px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--card);
}
.role-item .role-name{ font-size:14.5px; font-weight:600; margin-bottom:3px; }
.role-item .role-desc{ font-size:13px; color:var(--text-secondary); }

/* ---------- Tabs (expertise categories) ---------- */
.tabs{
  display:grid;
  grid-template-columns:230px 1fr;
  gap:28px;
  align-items:start;
}
.tab-nav{
  display:flex; flex-direction:column; gap:6px;
  position:sticky; top:88px;
}
.tab-btn{
  text-align:left;
  padding:14px 18px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  background:transparent;
  color:var(--text-secondary);
  font-size:14.5px; font-weight:500;
  cursor:pointer;
  transition:all .3s var(--ease);
}
.tab-btn:hover{ color:var(--text); background:var(--card); }
.tab-btn.active{
  color:var(--text);
  background:var(--card);
  border-color:var(--border-strong);
}
.tab-panel{ display:none; }
.tab-panel.active{ display:block; animation:fadeUp .5s var(--ease); }
@keyframes fadeUp{ from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:none;} }
.tab-panel > p.intro{
  font-size:15px; color:var(--text-secondary); line-height:1.7; margin:0 0 28px; max-width:640px;
}
.feature-2col{
  display:grid; grid-template-columns:1fr 1fr; gap:2px;
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  overflow:hidden;
  background:var(--border);
  margin-bottom:32px;
}
.feature-2col .fitem{
  background:var(--card); padding:22px 24px;
}
.feature-2col .fitem h5{ font-size:15px; margin:0 0 6px; }
.feature-2col .fitem p{ font-size:13.5px; color:var(--text-secondary); margin:0; line-height:1.6; }
.process-list{
  display:grid; grid-template-columns:1fr 1fr; gap:18px;
}
.process-step{ display:flex; gap:14px; }
.process-step .n{
  flex:0 0 auto;
  width:30px; height:30px; border-radius:50%;
  border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:600; color:var(--text-secondary);
}
.process-step h5{ font-size:14.5px; margin:2px 0 4px; }
.process-step p{ font-size:13.5px; color:var(--text-secondary); margin:0; line-height:1.6; }

/* ---------- Highlights (challenge / solution) ---------- */
.highlight-card .hl-block{ margin-top:18px; }
.highlight-card .hl-block h4{
  font-size:12.5px; text-transform:uppercase; letter-spacing:0.06em;
  color:var(--text-tertiary); font-weight:600; margin:0 0 8px;
}
.highlight-card .hl-block p{ font-size:14.5px; color:var(--text-secondary); margin:0; line-height:1.65; }

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .feature-grid .card:nth-child(4){ grid-column:auto; }
  .feature-grid .card:nth-child(5){ grid-column:auto; }
  .detail-grid{ grid-template-columns:repeat(2,1fr); }
  .role-grid{ grid-template-columns:1fr; }
  .tabs{ grid-template-columns:1fr; }
  .tab-nav{ position:static; flex-direction:row; flex-wrap:wrap; }
  .feature-2col{ grid-template-columns:1fr; }
  .process-list{ grid-template-columns:1fr; }
}
@media (max-width:720px){
  nav.main-nav{
    position:fixed;
    top:56px; left:0; right:0;
    background:var(--nav-bg);
    backdrop-filter:blur(20px);
    flex-direction:column;
    align-items:flex-start;
    padding:20px 24px 26px;
    gap:18px;
    border-bottom:1px solid var(--border);
    transform:translateY(-140%);
    opacity:0;
    transition:transform .4s var(--ease), opacity .4s var(--ease);
  }
  nav.main-nav.open{
    transform:translateY(0);
    opacity:1;
  }
  .menu-toggle{
    display:flex;
  }
  .grid-2, .grid-3, .grid-4{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .detail-grid{grid-template-columns:1fr;}
  .showcase-inner{ padding:24px; }
  .footer-grid{grid-template-columns:1fr; gap:36px;}
  .stat-row{gap:36px;}
  section{padding:80px 0;}
}