/* ============================================================
   GrandStone — landing styles
   Theme system via [data-theme] + [data-accent] + [data-head] + [data-corner]
   ============================================================ */

/* ---------- Accent (independent of theme) ---------- */
:root[data-accent="gold"]   { --accent:#c9a253; --accent-2:#a37f37; --accent-ink:#1b1710; --accent-soft:rgba(201,162,83,.14); }
:root[data-accent="copper"] { --accent:#bd7c4c; --accent-2:#9a5d31; --accent-ink:#1b1108; --accent-soft:rgba(189,124,76,.14); }
:root[data-accent="bronze"] { --accent:#a98a4e; --accent-2:#836630; --accent-ink:#191409; --accent-soft:rgba(169,138,78,.14); }

/* ---------- Themes ---------- */
:root[data-theme="premium"]{
  --bg:#0c0c10; --bg-2:rgba(255,255,255,.022); --surface:rgba(22,22,27,.56); --surface-2:rgba(30,30,37,.5);
  --text:#f2f1f4; --text-muted:#a7a7b1; --line:rgba(255,255,255,.10);
  --hero-img:url('assets/marble-bg.png');
  --card-shadow:0 24px 60px -28px rgba(0,0,0,.9);
  --on-band-text:#f2f1f4; --on-band-muted:#a7a7b1;
  color-scheme:dark;
}

/* ---- Black-marble page background (premium) ---- */
html[data-theme="premium"]{ background:#070708; }
html[data-theme="premium"] body{ background:transparent; }
html[data-theme="premium"] body::before{
  content:""; position:fixed; inset:0; z-index:-1;
  background:#070708 url('assets/marble-bg.png') center/cover no-repeat;
}
/* frosted glass over the marble */
html[data-theme="premium"] .stats,
html[data-theme="premium"] .project,
html[data-theme="premium"] .material,
html[data-theme="premium"] .why-card,
html[data-theme="premium"] .g-card,
html[data-theme="premium"] .g-list li,
html[data-theme="premium"] .form-card,
html[data-theme="premium"] .hero__badge{
  backdrop-filter:blur(9px) saturate(120%);
  -webkit-backdrop-filter:blur(9px) saturate(120%);
}
:root[data-theme="light"]{
  --bg:#fbf9f4; --bg-2:#f2efe6; --surface:#ffffff; --surface-2:#f7f4ec;
  --text:#262017; --text-muted:#7c7263; --line:#e7e1d3;
  --hero-img:url('assets/hero-slab-light.png');
  --card-shadow:0 22px 48px -30px rgba(60,48,24,.35);
  --on-band-text:#f1ead9; --on-band-muted:#b4a78c;
  color-scheme:light;
}
:root[data-theme="stone"]{
  --bg:#efe9dc; --bg-2:#e7ddca; --surface:#f8f3e9; --surface-2:#f0e8d7;
  --text:#322a1e; --text-muted:#7f7359; --line:#dccfb5;
  --hero-img:url('assets/hero-slab-light.png');
  --card-shadow:0 22px 48px -30px rgba(80,62,30,.4);
  --on-band-text:#f1ead9; --on-band-muted:#b4a78c;
  color-scheme:light;
}

/* ---------- Heading font + corners ---------- */
:root[data-head="serif"]{ --font-display:'Cormorant Garamond', Georgia, serif; --head-weight:600; --head-tracking:-0.01em; }
:root[data-head="sans"] { --font-display:'Manrope', system-ui, sans-serif; --head-weight:700; --head-tracking:-0.02em; }
:root[data-corner="soft"] { --radius:12px; --radius-sm:9px; --radius-pill:999px; }
:root[data-corner="sharp"]{ --radius:2px; --radius-sm:2px; --radius-pill:3px; }

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:'Golos Text', system-ui, sans-serif;
  font-size:17px; line-height:1.6; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }

h1,h2,h3,h4{ font-family:var(--font-display); font-weight:var(--head-weight); letter-spacing:var(--head-tracking); line-height:1.08; margin:0; text-wrap:balance; }
p{margin:0;}
a{color:inherit; text-decoration:none;}
img{display:block; max-width:100%;}

.wrap{ max-width:1200px; margin:0 auto; padding:0 28px; }
.section{ padding:clamp(64px,9vw,120px) 0; }
.section--alt{ background:var(--bg-2); }

/* eyebrow */
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:'Golos Text',sans-serif; font-size:13px; font-weight:600;
  letter-spacing:.22em; text-transform:uppercase; color:var(--accent);
}
.eyebrow::before{ content:""; width:26px; height:1px; background:var(--accent); opacity:.7; }
.eyebrow.center::after{ content:""; width:26px; height:1px; background:var(--accent); opacity:.7; }

.section-head{ max-width:680px; margin-bottom:clamp(36px,5vw,56px); }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head.center .eyebrow{ justify-content:center; }
.section-head h2{ font-size:clamp(30px,4.2vw,50px); margin-top:18px; }
.section-head p{ color:var(--text-muted); font-size:clamp(16px,1.6vw,19px); margin-top:16px; max-width:60ch; }
.section-head.center p{ margin-left:auto; margin-right:auto; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family:'Golos Text',sans-serif; font-weight:600; font-size:15px;
  padding:15px 28px; border-radius:var(--radius-pill); border:1px solid transparent;
  cursor:pointer; transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space:nowrap;
}
.btn--primary{ background:var(--accent); color:var(--accent-ink); box-shadow:0 12px 30px -12px var(--accent); }
.btn--primary:hover{ transform:translateY(-2px); box-shadow:0 18px 38px -12px var(--accent); }
.btn--ghost{ background:transparent; color:var(--text); border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn--on-band{ background:var(--accent); color:var(--accent-ink); }
.btn--block{ width:100%; }
.btn .arr{ transition:transform .2s ease; }
.btn:hover .arr{ transform:translateX(3px); }

/* ============================================================
   HEADER
   ============================================================ */
.header{
  position:sticky; top:0; z-index:60;
  backdrop-filter:saturate(140%) blur(12px);
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom:1px solid var(--line);
}
.header__inner{ display:flex; align-items:center; gap:24px; height:74px; }
.header__right{ display:flex; align-items:center; gap:24px; }
.logo{ display:inline-flex; align-items:center; gap:7px; color:var(--text); font-family:'Manrope',system-ui,sans-serif; }
.logo__mark{ width:45px; height:45px; flex:none; background:currentColor;
  -webkit-mask:url('assets/logo-mark.png') center/contain no-repeat;
  mask:url('assets/logo-mark.png') center/contain no-repeat; }
.logo__type{ display:inline-flex; flex-direction:column; align-items:center; line-height:1; }
.logo__name{ font-size:21px; font-weight:700; letter-spacing:.2em; text-indent:.2em; color:currentColor; }
.logo__tag{ margin-top:5px; font-size:9px; font-weight:600; letter-spacing:.24em; text-indent:.24em; text-transform:uppercase; color:currentColor; opacity:.62; white-space:nowrap; }
.nav{ display:flex; gap:26px; flex:1; justify-content:center; }
.nav a{ font-size:18px; color:var(--text-muted); transition:color .2s; position:relative; white-space:nowrap; }
.nav a:hover{ color:var(--text); }
.nav a::after{ content:""; position:absolute; left:0; bottom:-6px; width:0; height:1.5px; background:var(--accent); transition:width .25s; }
.nav a:hover::after{ width:100%; }

/* ---------- Nav dropdown ---------- */
.nav__dd{ position:relative; }
.nav__dd-toggle{ display:inline-flex; align-items:center; gap:7px; cursor:pointer; }
.nav__caret{ width:7px; height:7px; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:translateY(-2px) rotate(45deg); transition:transform .25s; opacity:.7; }
.nav__dd:hover .nav__caret, .nav__dd:focus-within .nav__caret{ transform:translateY(0) rotate(225deg); }
.nav__dd-toggle::after{ display:none; }
.nav__menu{
  position:absolute; top:calc(100% + 14px); left:50%; transform:translateX(-50%) translateY(8px);
  min-width:230px; display:flex; flex-direction:column; padding:10px;
  background:color-mix(in srgb, var(--bg) 94%, transparent); border:1px solid var(--line);
  border-radius:var(--radius); box-shadow:var(--card-shadow);
  backdrop-filter:saturate(140%) blur(12px); -webkit-backdrop-filter:saturate(140%) blur(12px);
  opacity:0; visibility:hidden; pointer-events:none; transition:opacity .22s, transform .22s, visibility .22s;
}
.nav__menu::before{
  content:""; position:absolute; top:-14px; left:0; right:0; height:14px;
}
.nav__dd:hover .nav__menu, .nav__dd:focus-within .nav__menu{
  opacity:1; visibility:visible; pointer-events:auto; transform:translateX(-50%) translateY(0);
}
.nav__menu a{ font-size:16px; padding:10px 14px; border-radius:calc(var(--radius) - 8px); white-space:nowrap; transition:background .2s, color .2s; }
.nav__menu a::after{ display:none; }
.nav__menu a:hover{ background:var(--accent-soft); color:var(--text); }
.nav__menu a.is-current{ color:var(--accent); }
.header__spacer{ flex:1; }
.header__phone{ font-size:18px; font-weight:600; letter-spacing:.01em; white-space:nowrap; }
.header__phone small{ display:block; font-weight:400; font-size:13px; letter-spacing:.16em; text-transform:uppercase; color:var(--text-muted); }
.burger{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.burger span{ width:24px; height:2px; background:var(--text); transition:.25s; }
.mobile-nav{ display:none; }

/* ============================================================
   HERO
   ============================================================ */
.hero{ position:relative; padding-top:clamp(40px,6vw,72px); padding-bottom:clamp(56px,7vw,96px); overflow:hidden; }
.hero::before{
  content:""; position:absolute; top:-20%; right:-10%; width:50vw; height:60vw; max-width:680px; max-height:680px;
  background:radial-gradient(circle, var(--accent-soft), transparent 70%); pointer-events:none; z-index:0;
}
.hero__grid{ position:relative; z-index:1; display:grid; grid-template-columns:1.05fr 1fr; gap:clamp(36px,5vw,72px); align-items:center; }
.hero h1{ font-size:clamp(40px,5.6vw,76px); margin-top:22px; text-wrap:balance; }
.hero h1 em{ font-style:italic; color:var(--accent); }
.hero__sub{ color:var(--text-muted); font-size:clamp(17px,1.8vw,20px); margin-top:22px; max-width:48ch; }
.hero__features{ display:grid; grid-template-columns:1fr 1fr; gap:14px 26px; margin:32px 0 36px; max-width:520px; }
.hero__feature{ display:flex; align-items:flex-start; gap:12px; font-size:15.5px; }
.hero__feature .ck{ flex:none; width:24px; height:24px; border-radius:50%; background:var(--accent-soft); color:var(--accent); display:flex; align-items:center; justify-content:center; font-size:13px; margin-top:1px; }
.hero__cta{ display:flex; gap:14px; flex-wrap:wrap; }

.hero__media{ position:relative; }
.hero__media image-slot, .hero__media .slot{ width:100%; aspect-ratio:4/5; box-shadow:var(--card-shadow); }
.hero__badge{
  position:absolute; left:-26px; bottom:34px; z-index:3;
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:18px 22px; box-shadow:var(--card-shadow); min-width:150px;
}
.hero__badge .n{ font-family:var(--font-display); font-size:38px; color:var(--accent); line-height:1; }
.hero__badge .t{ font-size:13px; color:var(--text-muted); margin-top:6px; }

/* ---------- Stat strip ---------- */
.stats{ background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.stats__grid{ display:grid; grid-template-columns:repeat(3,1fr); }
.stat{ padding:34px 28px; text-align:center; border-right:1px solid var(--line); }
.stat:last-child{ border-right:none; }
.stat .n{ font-family:var(--font-display); font-size:clamp(34px,4vw,48px); color:var(--accent); line-height:1; }
.stat .t{ font-size:14px; color:var(--text-muted); margin-top:10px; letter-spacing:.02em; }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.project{ border-radius:var(--radius); overflow:hidden; background:var(--surface); border:1px solid var(--line); box-shadow:var(--card-shadow); transition:transform .3s ease; }
.project:hover{ transform:translateY(-6px); }
.project .slot{ width:100%; aspect-ratio:4/3; }
.project__body{ padding:22px 24px 26px; }
.project__tag{ display:inline-block; font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); margin-bottom:10px; }
.project h3{ font-size:23px; }
.project p{ color:var(--text-muted); font-size:15px; margin-top:8px; }

/* ============================================================
   MATERIALS
   ============================================================ */
.materials__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.material{ border-radius:var(--radius); overflow:hidden; border:1px solid var(--line); background:var(--surface); position:relative; transition:transform .3s ease; }
.material:hover{ transform:translateY(-5px); }
.material__img{ aspect-ratio:16/10; background-size:cover; background-position:center; }
.material__cap{ display:flex; align-items:center; justify-content:space-between; padding:16px 20px; }
.material__cap h4{ font-size:20px; }
.material__cap span{ font-size:13px; color:var(--text-muted); }

/* ============================================================
   WHY US
   ============================================================ */
.why__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.why-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:34px 30px; transition:border-color .3s, transform .3s; }
.why-card:hover{ border-color:var(--accent); transform:translateY(-4px); }
.why-card .ic{ width:48px; height:48px; border-radius:var(--radius-sm); background:var(--accent-soft); color:var(--accent); display:flex; align-items:center; justify-content:center; margin-bottom:20px; }
.why-card .ic svg{ width:24px; height:24px; }
.why-card h3{ font-size:22px; margin-bottom:10px; }
.why-card p{ color:var(--text-muted); font-size:15px; }
.why-card--cta{ background:var(--accent); color:var(--accent-ink); display:flex; flex-direction:column; justify-content:center; }
.why-card--cta h3{ color:var(--accent-ink); }
.why-card--cta p{ color:color-mix(in srgb, var(--accent-ink) 72%, transparent); margin-bottom:22px; }
.why-card--cta .btn{ background:var(--accent-ink); color:var(--accent); align-self:flex-start; }
.why-card--cta:hover{ transform:translateY(-4px); border-color:transparent; }

/* ============================================================
   STEPS
   ============================================================ */
.steps__track{ display:grid; grid-template-columns:repeat(6,1fr); gap:0; position:relative; }
.step{ position:relative; padding:0 18px; text-align:center; }
.step:not(:last-child)::after{
  content:""; position:absolute; top:27px; left:calc(50% + 32px); right:calc(-50% + 32px); height:1px;
  background:linear-gradient(to right, var(--accent), var(--line)); opacity:.6;
}
.step__n{
  width:56px; height:56px; border-radius:50%; margin:0 auto 18px;
  background:var(--surface); border:1px solid var(--accent); color:var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:24px; position:relative; z-index:1;
}
.step h4{ font-size:18px; margin-bottom:8px; }
.step p{ font-size:13.5px; color:var(--text-muted); }

/* ============================================================
   GUARANTEES
   ============================================================ */
.guarantee{ display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-bottom:24px; }
.g-card{ position:relative; overflow:hidden; border-radius:var(--radius); padding:44px 40px; background:var(--surface); border:1px solid var(--line); }
.g-card .big{ font-family:var(--font-display); font-size:clamp(48px,7vw,80px); color:var(--accent); line-height:.95; }
.g-card .lbl{ font-size:18px; margin-top:10px; }
.g-card p{ color:var(--text-muted); font-size:15px; margin-top:14px; max-width:38ch; }
.g-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.g-list li{ list-style:none; display:flex; gap:12px; align-items:flex-start; padding:22px 22px; background:var(--surface-2); border:1px solid var(--line); border-radius:var(--radius-sm); font-size:14.5px; }
.g-list .ck{ flex:none; color:var(--accent); margin-top:2px; }
.g-list b{ display:block; margin-bottom:3px; }
.g-list span{ color:var(--text-muted); }

/* ============================================================
   FAQ
   ============================================================ */
.faq{ max-width:840px; margin:0 auto; }
.faq__item{ border-bottom:1px solid var(--line); }
.faq__q{ width:100%; background:none; border:none; cursor:pointer; text-align:left; display:flex; align-items:center; gap:20px; padding:24px 4px; color:var(--text); font-family:var(--font-display); font-size:clamp(19px,2.2vw,24px); font-weight:var(--head-weight); }
.faq__q .plus{ margin-left:auto; flex:none; width:34px; height:34px; border-radius:50%; border:1px solid var(--line); display:flex; align-items:center; justify-content:center; transition:.3s; position:relative; }
.faq__q .plus::before,.faq__q .plus::after{ content:""; position:absolute; background:var(--accent); transition:.3s; }
.faq__q .plus::before{ width:13px; height:1.5px; }
.faq__q .plus::after{ width:1.5px; height:13px; }
.faq__item.open .plus{ background:var(--accent); border-color:var(--accent); transform:rotate(90deg); }
.faq__item.open .plus::before,.faq__item.open .plus::after{ background:var(--accent-ink); }
.faq__item.open .plus::after{ transform:scaleY(0); }
.faq__a{ max-height:0; overflow:hidden; transition:max-height .35s ease; }
.faq__a > div{ padding:0 4px 26px; color:var(--text-muted); font-size:16px; max-width:70ch; }

/* ============================================================
   FORM BAND
   ============================================================ */
.cta-band{ background:var(--surface); position:relative; overflow:hidden; }
:root[data-theme="premium"] .cta-band{ background:transparent; }
.cta-band::before{ content:""; position:absolute; inset:0; background:var(--hero-img); background-size:cover; background-position:center; opacity:.10; }
:root[data-theme="premium"] .cta-band::before{ opacity:0; }
.cta-band__inner{ position:relative; z-index:1; display:grid; grid-template-columns:1fr 1.05fr; gap:clamp(40px,6vw,80px); align-items:center; }
.cta-band__text .eyebrow{ color:var(--accent); }
.cta-band__text h2{ font-size:clamp(32px,4.4vw,52px); margin-top:18px; color:var(--on-band-text); }
.cta-band__text p{ color:var(--on-band-muted); margin-top:18px; font-size:18px; max-width:42ch; }
.cta-band__contacts{ margin-top:30px; display:flex; flex-direction:column; gap:14px; }
.cta-band__contacts a{ display:flex; align-items:center; gap:14px; color:var(--on-band-text); font-size:17px; }
.cta-band__contacts .ic{ width:42px; height:42px; border-radius:50%; border:1px solid var(--accent); color:var(--accent); display:flex; align-items:center; justify-content:center; flex:none; }

.form-card{ background:var(--surface-2); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(28px,3.4vw,44px); box-shadow:var(--card-shadow); }
:root[data-theme="premium"] .form-card{ background:rgba(26,26,32,.62); }
.form-card h3{ font-size:26px; margin-bottom:6px; }
.form-card .lead{ color:var(--text-muted); font-size:15px; margin-bottom:24px; }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13px; color:var(--text-muted); margin-bottom:7px; letter-spacing:.02em; }
.field input,.field textarea{
  width:100%; background:var(--bg); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:14px 16px; color:var(--text); font:inherit; font-size:15px; transition:border-color .2s;
}
.field input:focus,.field textarea:focus{ outline:none; border-color:var(--accent); }
.field textarea{ resize:vertical; min-height:84px; }
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.consent{ display:flex; gap:10px; align-items:flex-start; font-size:12.5px; color:var(--text-muted); margin:6px 0 20px; }
.consent input{ margin-top:3px; accent-color:var(--accent); }
.form-success{ display:none; text-align:center; padding:30px 10px; }
.form-success .ok{ width:64px; height:64px; border-radius:50%; background:var(--accent-soft); color:var(--accent); display:flex; align-items:center; justify-content:center; margin:0 auto 18px; }
.form-success h3{ margin-bottom:10px; }
.form-success p{ color:var(--text-muted); }
.form-card.sent form{ display:none; }
.form-card.sent .form-success{ display:block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer{ background:var(--bg-2); border-top:1px solid var(--line); padding:60px 0 36px; }
.footer__grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:36px; padding-bottom:40px; border-bottom:1px solid var(--line); }
.footer .logo{ margin-bottom:18px; }
.footer__col h5{ font-family:'Golos Text',sans-serif; font-size:13px; letter-spacing:.14em; text-transform:uppercase; color:var(--accent); margin:0 0 16px; }
.footer__col a,.footer__col p{ display:block; color:var(--text-muted); font-size:15px; margin-bottom:11px; }
.footer__col a:hover{ color:var(--text); }
.footer__about{ color:var(--text-muted); font-size:15px; max-width:34ch; }
.footer__bottom{ display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; padding-top:26px; color:var(--text-muted); font-size:13px; }
.footer__bottom a{ color:var(--text-muted); text-decoration:underline; text-underline-offset:3px; }

/* mobile sticky call */
.mobile-cta{ display:none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1024px){
  .nav{ display:none; }
  .burger{ display:flex; }
  .hero__grid{ grid-template-columns:1fr; gap:40px; }
  .hero__media{ max-width:520px; }
  .hero__badge{ left:auto; right:24px; }
  .cta-band__inner{ grid-template-columns:1fr; }
  .footer__grid{ grid-template-columns:1fr 1fr; }
  .header__phone{ display:none; }
}
@media (max-width:760px){
  body{ font-size:16px; }
  .projects__grid{ grid-template-columns:1fr; }
  .materials__grid{ grid-template-columns:1fr 1fr; }
  .why__grid{ grid-template-columns:1fr; }
  .stats__grid{ grid-template-columns:repeat(3,1fr); }
  .steps__track{ grid-template-columns:1fr 1fr; gap:34px 8px; }
  .step::after{ display:none; }
  .guarantee{ grid-template-columns:1fr; }
  .g-list{ grid-template-columns:1fr; }
  .hero__features{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .footer__grid{ grid-template-columns:1fr 1fr; gap:28px; }
  .footer__col--about{ grid-column:1 / -1; }
  .header .btn--header{ display:none; }
  .mobile-cta{
    display:block; position:fixed; left:14px; right:14px; bottom:14px; z-index:55;
  }
  .mobile-cta .btn{ width:100%; box-shadow:0 14px 34px -10px rgba(0,0,0,.5); }
  body{ padding-bottom:80px; }
}
@media (max-width:430px){
  .materials__grid{ grid-template-columns:1fr; }
  .stats__grid{ grid-template-columns:1fr; }
  .stat{ border-right:none; border-bottom:1px solid var(--line); }
  .stat:last-child{ border-bottom:none; }
}

/* ---------- Mobile nav drawer ---------- */
.mobile-nav{
  position:fixed; inset:0; z-index:80; background:color-mix(in srgb,var(--bg) 97%, transparent);
  backdrop-filter:blur(8px); flex-direction:column; padding:90px 32px 32px;
}
.mobile-nav.open{ display:flex; }
.mobile-nav a{ font-family:var(--font-display); font-size:30px; padding:16px 0; border-bottom:1px solid var(--line); }
.mobile-nav .close{ position:absolute; top:24px; right:26px; background:none; border:none; color:var(--text); font-size:32px; cursor:pointer; line-height:1; }
.mobile-nav .btn{ margin-top:26px; }

/* mobile dropdown group */
.mobile-nav__group{ display:flex; flex-direction:column; }
.mobile-nav__toggle{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  font-family:var(--font-display); font-size:30px; padding:16px 0; border-bottom:1px solid var(--line);
  background:none; border-top:none; border-left:none; border-right:none; color:var(--text); cursor:pointer; text-align:left; width:100%;
}
.mobile-nav__toggle .nav__caret{ width:11px; height:11px; }
.mobile-nav__toggle[aria-expanded="true"] .nav__caret{ transform:translateY(0) rotate(225deg); }
.mobile-nav__sub{ display:none; flex-direction:column; padding-left:18px; }
.mobile-nav__sub.open{ display:flex; }
.mobile-nav__sub a{ font-size:21px; padding:13px 0; }
.mobile-nav__sub a.is-current{ color:var(--accent); }

/* reveal-on-scroll */
.reveal{ opacity:0; transform:translateY(26px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; transition:none; } }

/* ============================================================
   LUXURY ENHANCEMENTS
   ============================================================ */
/* gold gradient numerals */
.gold-num{
  background:linear-gradient(150deg,
    color-mix(in srgb, var(--accent) 55%, #fff 45%) 0%,
    var(--accent) 48%,
    var(--accent-2) 100%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* refined primary button: dimensional gold + sheen sweep */
.btn--primary{
  background:linear-gradient(135deg,
    color-mix(in srgb, var(--accent) 74%, #fff 26%),
    var(--accent) 52%, var(--accent-2));
  position:relative; overflow:hidden; isolation:isolate;
}
.btn--primary::after{
  content:""; position:absolute; inset:0; z-index:-1;
  background:linear-gradient(115deg, transparent 34%, rgba(255,255,255,.45) 50%, transparent 66%);
  transform:translateX(-130%); transition:transform .7s ease;
}
.btn--primary:hover::after{ transform:translateX(130%); }

/* hero accent: gilded italic with soft glow */
.hero h1 em{
  background:linear-gradient(120deg,
    color-mix(in srgb, var(--accent) 60%, #fff 40%),
    var(--accent) 55%, var(--accent-2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* hero rating / social proof line */
.hero__trust{ display:flex; align-items:center; gap:14px; margin-top:26px; flex-wrap:wrap; }
.hero__stars{ display:inline-flex; gap:3px; color:var(--accent); font-size:16px; letter-spacing:1px; }
.hero__trust b{ font-weight:700; }
.hero__trust span{ color:var(--text-muted); font-size:14.5px; }
.hero__trust .sep{ width:4px; height:4px; border-radius:50%; background:var(--accent); opacity:.5; }

/* gilded frame around hero media */
.hero__media{ padding:10px; }
.hero__media::before{
  content:""; position:absolute; inset:0; border-radius:calc(var(--radius) + 10px);
  padding:1px; pointer-events:none; z-index:2;
  background:linear-gradient(150deg, color-mix(in srgb,var(--accent) 70%, #fff 30%), transparent 40%, transparent 62%, var(--accent-2));
  -webkit-mask:linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude;
}
.hero__badge{ backdrop-filter:blur(12px) saturate(130%); -webkit-backdrop-filter:blur(12px) saturate(130%); }

/* premium section divider (gilded diamond) */
.lux-divider{ display:flex; align-items:center; justify-content:center; gap:18px; padding:6px 0; }
.lux-divider::before, .lux-divider::after{ content:""; height:1px; width:min(120px,18vw);
  background:linear-gradient(to var(--dir,right), transparent, var(--accent)); opacity:.5; }
.lux-divider::after{ --dir:left; }
.lux-divider i{ width:7px; height:7px; transform:rotate(45deg); background:var(--accent); flex:none; box-shadow:0 0 0 4px var(--accent-soft); }

/* brands trust strip */
.brands{ border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--bg-2); }
.brands__inner{ display:flex; align-items:center; gap:clamp(28px,5vw,72px); padding:30px 0; flex-wrap:wrap; justify-content:center; }
.brands__label{ font-size:12px; letter-spacing:.2em; text-transform:uppercase; color:var(--text-muted); white-space:nowrap; }
.brand-logo{ font-family:var(--font-display); font-size:clamp(20px,2.4vw,27px); letter-spacing:.06em; color:var(--text);
  opacity:.62; transition:opacity .25s, color .25s; white-space:nowrap; }
.brand-logo b{ color:var(--accent); font-weight:inherit; }
.brand-logo:hover{ opacity:1; }

/* image media: subtle inner ring + hover zoom for cards */
.project .slot, .material__img{ transition:transform .6s cubic-bezier(.2,.7,.2,1); }
.project:hover .slot{ transform:scale(1.04); }
.material:hover .material__img{ transform:scale(1.05); }
.project{ position:relative; }
.project::after, .material::after{
  content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.05);
}
.material{ position:relative; overflow:hidden; }

/* testimonials */
.tcards{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.tcard{ position:relative; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:38px 32px 30px; box-shadow:var(--card-shadow); overflow:hidden; }
html[data-theme="premium"] .tcard{ backdrop-filter:blur(9px) saturate(120%); -webkit-backdrop-filter:blur(9px) saturate(120%); }
.tcard::before{ content:"\201C"; position:absolute; top:6px; left:24px; font-family:var(--font-display);
  font-size:96px; line-height:1; color:var(--accent); opacity:.18; }
.tcard__stars{ color:var(--accent); font-size:15px; letter-spacing:2px; margin-bottom:16px; }
.tcard__text{ font-family:var(--font-display); font-size:21px; line-height:1.45; color:var(--text); position:relative; z-index:1; }
.tcard__who{ display:flex; align-items:center; gap:14px; margin-top:24px; padding-top:20px; border-top:1px solid var(--line); }
.tcard__av{ width:46px; height:46px; border-radius:50%; flex:none; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:20px; color:var(--accent-ink); background:var(--accent); }
.tcard__name{ font-weight:600; font-size:15.5px; }
.tcard__role{ font-size:13px; color:var(--text-muted); }

/* refined stats hover */
.stat{ transition:background .3s; }
.stat:hover{ background:color-mix(in srgb, var(--accent) 6%, transparent); }

@media (max-width:760px){
  .tcards{ grid-template-columns:1fr; }
  .brands__inner{ gap:22px 30px; }
}