/* ============================================================
   Grace Diamond — lab-grown diamond, China supply → Bangkok
   Light editorial system, champagne gold, deep-black hero
   ============================================================ */

:root{
  --paper:#FAF8F4;
  --paper-2:#F2EEE6;
  --white:#FFFFFF;
  --ink:#14120F;
  --ink-2:#3A362F;
  --muted:#726C61;
  --line:#E4DED2;
  --line-2:#EFEAE0;

  --gold:#A9863F;
  --gold-light:#C9A45C;
  --gold-pale:#F7F0DE;
  --deep:#12100D;
  --deep-2:#1C1915;

  --serif:"Cormorant Garamond",Georgia,"Times New Roman","Songti SC","Noto Serif SC","Source Han Serif SC",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Sarabun","Noto Sans Thai","Leelawadee UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  --thai:"Sarabun","Noto Sans Thai","Leelawadee UI","Thonburi",-apple-system,"Segoe UI",sans-serif;

  --radius:3px;
  --shadow:0 1px 2px rgba(20,18,15,.04), 0 10px 30px -14px rgba(20,18,15,.12);
  --shadow-lg:0 2px 4px rgba(20,18,15,.04), 0 30px 60px -30px rgba(20,18,15,.22);
  --ease:cubic-bezier(.19,1,.22,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.7;
  font-size:16.5px;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 34px}
.wrap-narrow{max-width:880px;margin:0 auto;padding:0 34px}

/* Thai needs a taller line box and looser tracking-free setting */
html[lang="th"] body{line-height:1.85}
html[lang="th"] h1,html[lang="th"] h2,html[lang="th"] h3,html[lang="th"] h4{
  font-family:var(--thai);letter-spacing:0;line-height:1.5;font-weight:600;
}
html[lang="th"] h1{font-size:clamp(1.9rem,3.6vw,2.9rem)}
html[lang="th"] h2{font-size:clamp(1.5rem,2.5vw,2.05rem)}
html[lang="th"] .eyebrow{letter-spacing:.06em;text-transform:none}

/* ---------- type ---------- */
h1,h2,h3,h4{font-family:var(--serif);font-weight:400;letter-spacing:-.015em;color:var(--ink)}
h1{font-size:clamp(2.4rem,4.6vw,3.9rem);line-height:1.12}
h2{font-size:clamp(1.8rem,3vw,2.6rem);line-height:1.2}
h3{font-size:1.3rem;line-height:1.4}
p{color:var(--ink-2)}
.eyebrow{
  font-family:var(--sans);font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);font-weight:650;margin-bottom:18px;
}
.lead{font-size:1.1rem;color:var(--ink-2);line-height:1.75}
.micro{font-size:.83rem;color:var(--muted);line-height:1.65}
.gold{color:var(--gold)}
em{font-style:italic}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:120;background:rgba(250,248,244,.9);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .35s,background .35s,padding .35s;
}
.nav.scrolled{border-bottom-color:var(--line)}
.nav.on-dark{background:rgba(18,16,13,.55);border-bottom-color:rgba(255,255,255,.1)}
.nav.on-dark .logo,.nav.on-dark .nav-links a,.nav.on-dark .lang-btn{color:#F5F1E8}
.nav.on-dark .logo-mark{border-color:var(--gold-light);color:var(--gold-light)}
.nav.on-dark.scrolled{background:rgba(18,16,13,.92)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:84px;transition:height .35s var(--ease)}
.nav.scrolled .nav-in{height:68px}
.logo{display:flex;align-items:center;gap:12px;font-family:var(--serif);font-size:1.24rem;letter-spacing:.14em;white-space:nowrap}
.logo-mark{
  width:34px;height:34px;flex:none;display:grid;place-items:center;
  color:var(--gold);transition:transform .6s var(--ease);
}
.logo-mark svg{width:100%;height:100%;display:block}
.logo:hover .logo-mark{transform:translateY(-2px) scale(1.06)}
.logo small{font-family:var(--sans);font-size:.6rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);display:block;margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:30px;font-size:.92rem;color:var(--ink-2)}
.nav-links a{position:relative;padding:5px 0;transition:color .2s}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--gold);transition:width .35s var(--ease);
}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav.on-dark .nav-links a:hover,.nav.on-dark .nav-links a.active{color:#fff}
.nav-right{display:flex;align-items:center;gap:20px}

/* language switch */
.lang-switch{display:flex;align-items:center;border:1px solid var(--line);border-radius:40px;padding:3px;gap:2px}
.nav.on-dark .lang-switch{border-color:rgba(255,255,255,.22)}
.lang-btn{
  border:none;background:none;cursor:pointer;font-size:.76rem;letter-spacing:.06em;
  padding:5px 11px;border-radius:30px;color:var(--muted);transition:all .3s var(--ease);
}
.lang-btn.on{background:var(--ink);color:var(--paper)}
.nav.on-dark .lang-btn{color:rgba(255,255,255,.65)}
.nav.on-dark .lang-btn.on{background:var(--gold-light);color:#12100D}

/* burger */
.burger{display:none;width:40px;height:36px;border:1px solid var(--line);border-radius:var(--radius);background:none;cursor:pointer;position:relative}
.burger i{position:absolute;left:11px;width:18px;height:1px;background:currentColor;transition:.3s var(--ease)}
.burger i:nth-child(1){top:13px}
.burger i:nth-child(2){top:21px}
.burger.open i:nth-child(1){top:17px;transform:rotate(45deg)}
.burger.open i:nth-child(2){top:17px;transform:rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 32px;border-radius:var(--radius);font-size:.94rem;font-weight:600;
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  transition:background .25s,transform .25s var(--ease),box-shadow .25s,border-color .25s;
  cursor:pointer;letter-spacing:.02em;font-family:var(--sans);
}
.btn:hover{background:#000;box-shadow:0 14px 30px -14px rgba(20,18,15,.6);transform:translateY(-1px)}
.btn.gold{background:var(--gold);border-color:var(--gold);color:#fff}
.btn.gold:hover{background:#93722F;border-color:#93722F;box-shadow:0 14px 30px -14px rgba(169,134,63,.7)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--white);border-color:var(--ink-2);box-shadow:var(--shadow)}
.btn.on-dark{background:transparent;color:#F5F1E8;border-color:rgba(245,241,232,.4)}
.btn.on-dark:hover{background:rgba(245,241,232,.1);border-color:#F5F1E8}
.btn.small{padding:11px 22px;font-size:.86rem}
.link-arrow{color:var(--gold);font-size:.92rem;font-weight:650;display:inline-flex;align-items:center;gap:7px;position:relative}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:var(--gold);transition:width .4s var(--ease)}
.link-arrow:hover::after{width:100%}
.link-arrow:hover{gap:12px}

/* ---------- hero (full-bleed dark) ---------- */
.hero{
  position:relative;background:var(--deep);color:#F5F1E8;overflow:hidden;
  padding:150px 0 0;margin-top:-84px;
}
.hero-bg{position:absolute;inset:0;overflow:hidden;z-index:0}
.hero-bg .media{position:absolute;inset:-8% 0;background-position:center 42%;will-change:transform}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(to bottom,rgba(18,16,13,.85) 0%,rgba(18,16,13,.62) 45%,rgba(18,16,13,.92) 100%),
    linear-gradient(to right,rgba(18,16,13,.55),rgba(18,16,13,0) 62%),
    radial-gradient(circle at 78% 30%, rgba(201,164,92,.18), transparent 55%);
}
.hero-in{position:relative;z-index:2}
.hero-main{display:grid;grid-template-columns:1fr 300px;gap:52px;align-items:end}
.hero-copy{max-width:760px;padding:70px 0 0}
.hero .eyebrow{color:var(--gold-light)}
.hero h1{color:#FBF8F2;margin-bottom:26px;text-wrap:balance;max-width:640px}
.hero h1 em{color:var(--gold-light);font-style:italic}
.hero .lead{color:rgba(245,241,232,.82);max-width:620px;margin-bottom:40px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-fine{margin-top:26px;font-size:.83rem;color:rgba(245,241,232,.55);letter-spacing:.02em}
.hero-foot{
  position:relative;z-index:2;margin-top:76px;border-top:1px solid rgba(245,241,232,.16);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hero-foot div{padding:26px 26px 30px;border-left:1px solid rgba(245,241,232,.12)}
.hero-foot div:first-child{border-left:none;padding-left:0}
.hero-foot b{display:block;font-family:var(--serif);font-size:1.6rem;color:var(--gold-light);line-height:1.2;margin-bottom:4px;white-space:nowrap}
.hero-foot div > span{font-size:.79rem;color:rgba(245,241,232,.6);line-height:1.5;display:block}
.hero-badge{
  position:relative;justify-self:end;margin-bottom:14px;z-index:3;
  background:rgba(250,248,244,.97);
  border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow-lg);max-width:280px;
  animation:floaty 6s ease-in-out infinite;
}
.hero-badge b{display:block;font-family:var(--serif);font-size:1.9rem;color:var(--gold);line-height:1.05}
.hero-badge span{font-size:.78rem;color:var(--muted);line-height:1.5;display:block;margin-top:6px}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- generic media placeholder ----------
   A CSS gradient sits *under* the photo. If the file is missing the label
   stays visible; once the image loads JS adds .has-img and hides it.
   ------------------------------------------------------------ */
.media{
  position:relative;background-color:#E9E4D9;
  background-image:linear-gradient(145deg,#EDE7DA 0%,#DFD8C9 55%,#E7E2D6 100%);
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.media .ph{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  font-size:.65rem;letter-spacing:.16em;text-transform:uppercase;color:#A79E8C;
  line-height:2;padding:0 18px;pointer-events:none;transition:opacity .4s;
}
.media.has-img .ph{opacity:0}
.media.has-img{background-color:#DDD6C7}

/* ---------- gallery (jewelry real shots) ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.g-item{margin:0}
.g-item .media{aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}

/* ---------- marquee strip ---------- */
.strip{background:var(--ink);color:rgba(245,241,232,.55);overflow:hidden;padding:15px 0}
.strip-track{display:flex;gap:56px;width:max-content;animation:slide 34s linear infinite}
.strip-track span{font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;white-space:nowrap}
.strip-track span b{color:var(--gold-light);font-weight:600}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
section{padding:104px 0}
.sec-head{max-width:700px;margin-bottom:58px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{margin-bottom:20px}
.sec-head .lead{max-width:640px}
.sec-head.center .lead{margin-left:auto;margin-right:auto}
.band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band-warm{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.cards.two{grid-template-columns:1fr 1fr}
.cards.two .card-img{height:320px}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;position:relative;
  transition:box-shadow .4s,transform .4s var(--ease);
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--gold);
  transform:scaleX(0);transform-origin:left;transition:transform .5s var(--ease);z-index:3;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-7px)}
.card:hover::before{transform:scaleX(1)}
.card-img{height:250px;border-bottom:1px solid var(--line);overflow:hidden;position:relative}
.card-img .media{position:absolute;inset:0;transition:transform 1.2s var(--ease)}
.card:hover .card-img .media{transform:scale(1.06)}
.card-body{padding:34px 32px 36px;display:flex;flex-direction:column;flex:1}
.card-body h3{margin-bottom:12px;font-size:1.38rem}
.card-body p{font-size:.95rem;margin-bottom:22px}
.card-meta{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line-2);
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;
}
.card-meta b{font-family:var(--serif);font-size:1.12rem;color:var(--ink);font-weight:400}
.card-meta small{font-size:.76rem;color:var(--muted)}
.tagrow{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.tag{
  font-size:.74rem;color:var(--ink-2);background:var(--paper-2);
  border:1px solid var(--line);border-radius:2px;padding:4px 10px;letter-spacing:.02em;
}

/* ---------- reasons ---------- */
.why-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:start}
.why-intro{position:sticky;top:120px}
.reasons{display:grid}
.reason{
  padding:30px 0;border-bottom:1px solid var(--line-2);
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  transition:padding-left .4s var(--ease);
}
.reason:first-child{padding-top:0}
.reason:last-child{border-bottom:none;padding-bottom:0}
.reason:hover{padding-left:10px}
.reason-n{font-family:var(--serif);font-size:1rem;color:var(--gold);padding-top:3px;letter-spacing:.05em}
.reason h3{font-size:1.08rem;font-family:var(--sans);font-weight:650;margin-bottom:8px;letter-spacing:0}
.reason p{font-size:.93rem;color:var(--muted);line-height:1.7}

/* ---------- price table ---------- */
.ptable{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line)}
.ptable th{
  text-align:left;font-family:var(--sans);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:650;padding:16px 20px;border-bottom:1px solid var(--line);background:var(--paper);
}
.ptable td{padding:20px;border-bottom:1px solid var(--line-2);font-size:.92rem;vertical-align:middle}
.ptable tr:last-child td{border-bottom:none}
.ptable td:first-child{font-weight:600;color:var(--ink)}
.ptable .price{font-family:var(--serif);font-size:1.12rem;color:var(--ink);white-space:nowrap}
.ptable .was{color:var(--muted);text-decoration:line-through;font-size:.88rem;white-space:nowrap}
.ptable .save{color:var(--gold);font-weight:650;white-space:nowrap}
.ptable tr:hover td{background:var(--paper)}
.ptable-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- flow steps ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
.flow-step{padding:30px 24px 0 0;position:relative}
.flow-step::before{
  content:"";position:absolute;top:-1px;left:0;width:0;height:2px;background:var(--gold);
  transition:width .8s var(--ease);
}
.flow.in .flow-step::before{width:100%}
.flow-step:nth-child(1)::before{transition-delay:.05s}
.flow-step:nth-child(2)::before{transition-delay:.18s}
.flow-step:nth-child(3)::before{transition-delay:.31s}
.flow-step:nth-child(4)::before{transition-delay:.44s}
.flow-step:nth-child(5)::before{transition-delay:.57s}
.flow-n{font-family:var(--serif);font-size:.9rem;color:var(--gold);margin-bottom:14px;letter-spacing:.1em}
.flow-step h3{font-size:1rem;font-family:var(--sans);font-weight:650;margin-bottom:9px;letter-spacing:0}
.flow-step p{font-size:.87rem;color:var(--muted);line-height:1.65}

/* ---------- certificates ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.cert{border:1px solid var(--line);background:var(--white);padding:32px 30px;border-radius:var(--radius);transition:.35s var(--ease)}
.cert:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.cert-k{font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);font-weight:650;margin-bottom:14px}
.cert h3{font-size:1.15rem;margin-bottom:10px;font-family:var(--serif)}
.cert p{font-size:.88rem;color:var(--muted)}

/* ---------- split (B2B / B2C) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line)}
.split-col{padding:56px 48px;background:var(--white);position:relative;transition:background .4s}
.split-col:first-child{border-right:1px solid var(--line)}
.split-col:hover{background:var(--paper)}
.split-col h3{font-size:1.7rem;margin-bottom:14px}
.split-col p{font-size:.95rem;margin-bottom:24px;max-width:400px}
.split-col ul{list-style:none;display:grid;gap:11px;margin-bottom:30px}
.split-col li{font-size:.9rem;color:var(--ink-2);padding-left:24px;position:relative}
.split-col li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;
  border-left:1px solid var(--gold);border-bottom:1px solid var(--gold);transform:rotate(-45deg) translateY(-3px);
}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:26px 44px 26px 0;position:relative;
  font-family:var(--serif);font-size:1.14rem;color:var(--ink);transition:color .25s;
}
html[lang="th"] .faq-item summary{font-family:var(--thai);font-size:1.02rem;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--gold)}
.faq-item summary::after{
  content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;
  border-right:1px solid var(--gold);border-bottom:1px solid var(--gold);
  transform:translateY(-70%) rotate(45deg);transition:transform .35s var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-item .faq-a{padding:0 60px 28px 0;font-size:.94rem;color:var(--muted);line-height:1.8;max-width:820px}
.faq-item[open] .faq-a{animation:fadeUp .5s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- form ---------- */
.form-shell{display:grid;grid-template-columns:.8fr 1.2fr;gap:76px;align-items:start}
.form-side h2{margin-bottom:18px}
.form-side p{font-size:.96rem;margin-bottom:28px}
.side-points{list-style:none;display:grid;gap:14px;margin-bottom:34px}
.side-points li{font-size:.89rem;color:var(--ink-2);padding-left:24px;position:relative}
.side-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;
  border-left:1px solid var(--gold);border-bottom:1px solid var(--gold);transform:rotate(-45deg) translateY(-3px);
}
.contact-lines{display:grid;gap:12px;font-size:.9rem}
.contact-lines a{display:flex;gap:10px;align-items:baseline;color:var(--ink-2);transition:color .2s}
.contact-lines a:hover{color:var(--gold)}
.contact-lines b{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);min-width:62px;font-weight:650}

.form{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fld{display:flex;flex-direction:column;gap:7px}
.fld.full{grid-column:1/-1}
.fld label{font-size:.78rem;color:var(--ink-2);font-weight:650;letter-spacing:.03em}
.fld input,.fld select,.fld textarea{
  width:100%;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);padding:13px 15px;font-size:.94rem;color:var(--ink);
  font-family:var(--sans);outline:none;transition:border-color .2s,box-shadow .2s,background .2s;
}
.fld input:focus,.fld select:focus,.fld textarea:focus{
  border-color:var(--gold);background:var(--white);box-shadow:0 0 0 3px rgba(169,134,63,.12);
}
.fld textarea{resize:vertical;min-height:100px}
.form-submit{grid-column:1/-1;margin-top:8px}
.form-submit .btn{width:100%}
.form-legal{grid-column:1/-1;font-size:.76rem;color:var(--muted);line-height:1.65;margin-top:2px}
.form-ok{
  display:none;padding:56px 34px;background:var(--gold-pale);
  border:1px solid rgba(169,134,63,.3);border-radius:var(--radius);text-align:center;
}
.form-ok b{display:block;font-family:var(--serif);font-size:1.4rem;color:#7C6122;margin-bottom:10px}
.form-ok span{font-size:.92rem;color:var(--ink-2)}

/* ---------- page head (inner pages) ---------- */
.page-head{background:var(--white);border-bottom:1px solid var(--line);padding:118px 0 72px;position:relative;overflow:hidden}
.page-head .eyebrow{margin-bottom:20px}
.page-head h1{font-size:clamp(2.1rem,4vw,3.2rem);margin-bottom:22px;max-width:820px}
.page-head .lead{max-width:640px}
.crumbs{font-size:.78rem;color:var(--muted);margin-bottom:26px;letter-spacing:.04em}
.crumbs a:hover{color:var(--gold)}
.crumbs span{margin:0 8px;opacity:.5}

/* ---------- stock table ---------- */
.stock-tools{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.chip{
  border:1px solid var(--line);background:var(--white);border-radius:30px;
  padding:8px 18px;font-size:.83rem;cursor:pointer;color:var(--ink-2);
  transition:.28s var(--ease);font-family:var(--sans);
}
.chip:hover{border-color:var(--gold);color:var(--ink)}
.chip.on{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.avail{display:inline-flex;align-items:center;gap:6px;font-size:.79rem;color:#4A6B4F;white-space:nowrap}
.avail::before{content:"";width:6px;height:6px;border-radius:50%;background:#6E9A73}
.avail.ord{color:var(--muted)}
.avail.ord::before{background:var(--gold-light)}

/* shape grid */
.shapes{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;margin-top:40px}
.shape{
  border:1px solid var(--line);background:var(--white);border-radius:var(--radius);
  padding:24px 12px 18px;text-align:center;transition:.35s var(--ease);cursor:default;
}
.shape:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:var(--shadow)}
.shape svg{display:block;margin:0 auto 12px;width:52px;height:52px;stroke:var(--gold);fill:none;stroke-width:1.1}
.shape:hover svg{stroke:var(--gold-light)}
.shape b{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:2px}
.shape small{font-size:.7rem;color:var(--muted);letter-spacing:.06em}

/* ---------- specs list ---------- */
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:0 60px}
.spec{display:grid;grid-template-columns:130px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line-2);font-size:.9rem}
.spec dt{color:var(--muted);font-size:.8rem;letter-spacing:.05em;padding-top:2px}
.spec dd{color:var(--ink-2)}

/* ---------- timeline (OEM) ---------- */
.oem-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:start}
.oem-media{position:sticky;top:110px;aspect-ratio:4/5;border:1px solid var(--line);overflow:hidden}
.oem-media .media{position:absolute;inset:0}
.tl{position:relative;padding-left:38px;margin-top:20px}
.tl::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:40px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-38px;top:7px;width:13px;height:13px;border-radius:50%;
  border:1px solid var(--gold);background:var(--paper);transition:.4s var(--ease);
}
.tl-item:hover::before{background:var(--gold);box-shadow:0 0 0 5px rgba(169,134,63,.15)}
.tl-item h3{font-size:1.05rem;font-family:var(--sans);font-weight:650;margin-bottom:7px}
.tl-item .tl-k{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin-bottom:8px;font-weight:650}
.tl-item p{font-size:.9rem;color:var(--muted);max-width:560px}

/* ---------- stat row ---------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-media{aspect-ratio:4/3;border:1px solid var(--line);overflow:hidden;position:relative}
.about-media .media{position:absolute;inset:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white)}
.stat{padding:38px 28px;border-left:1px solid var(--line-2)}
.stat:first-child{border-left:none}
.stat b{display:block;font-family:var(--serif);font-size:2.3rem;line-height:1.1;color:var(--ink);margin-bottom:6px}
.stat b i{font-style:normal;color:var(--gold);font-size:1.4rem;vertical-align:6px}
.stat span{font-size:.8rem;color:var(--muted);line-height:1.5;display:block}

/* ---------- CTA band ---------- */
.cta-band{background:var(--deep);color:#F5F1E8;padding:92px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;right:-10%;top:-40%;width:60%;height:180%;
  background:radial-gradient(circle,rgba(201,164,92,.16),transparent 62%);
}
.cta-in{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:48px;flex-wrap:wrap}
.cta-in h2{color:#FBF8F2;max-width:640px;margin-bottom:14px}
.cta-in p{color:rgba(245,241,232,.7);max-width:520px;font-size:.95rem}

/* ---------- footer ---------- */
footer{background:var(--paper-2);border-top:1px solid var(--line);padding:70px 0 44px}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:48px;margin-bottom:54px}
.foot-brand p{font-size:.87rem;color:var(--muted);margin-top:16px;max-width:290px;line-height:1.75}
.foot-col h4{font-family:var(--sans);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-2);font-weight:650;margin-bottom:16px}
.foot-col a{display:block;font-size:.87rem;color:var(--muted);padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--gold)}
.foot-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot-bottom p{font-size:.74rem;color:#948C7C;line-height:1.75;max-width:840px}
.foot-bottom .copy{font-size:.74rem;color:#948C7C;white-space:nowrap}

/* ---------- scroll progress ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:100%;z-index:200;
  background:linear-gradient(90deg,var(--gold),#E6D4A8);
  transform:scaleX(0);transform-origin:left;transition:transform .1s linear;pointer-events:none;
}

/* ---------- callout ---------- */
.callout{border-left:2px solid var(--gold);background:var(--gold-pale);padding:24px 28px;margin:34px 0}
.callout p{font-size:.9rem;color:var(--ink-2);margin:0}
.callout b{color:#7C6122}

/* ============ MOTION ============ */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s var(--ease),transform .9s var(--ease);will-change:opacity,transform}
.reveal.in{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease),transform .85s var(--ease)}
.stagger.in>*{opacity:1;transform:none}
.stagger.in>*:nth-child(1){transition-delay:.05s}
.stagger.in>*:nth-child(2){transition-delay:.13s}
.stagger.in>*:nth-child(3){transition-delay:.21s}
.stagger.in>*:nth-child(4){transition-delay:.29s}
.stagger.in>*:nth-child(5){transition-delay:.37s}
.stagger.in>*:nth-child(6){transition-delay:.45s}

@media(prefers-reduced-motion:reduce){
  .reveal,.stagger>*{opacity:1!important;transform:none!important;transition:none!important}
  .hero-bg .media,.hero-badge,.strip-track{animation:none!important;transform:none!important}
  html{scroll-behavior:auto}
}
/* static snapshot / debug mode (?static=1) */
html.no-anim *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
html.no-anim .reveal,html.no-anim .stagger>*{opacity:1!important;transform:none!important}
html.no-anim .flow.in .flow-step::before{width:100%}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .nav-links{gap:22px;font-size:.88rem}
  .why-grid{gap:52px}
  .flow{grid-template-columns:repeat(3,1fr);row-gap:34px}
  .shapes{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:980px){
  .gallery{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .nav-links{display:none}
  .burger{display:block}
  .nav-links.open{
    display:flex;position:absolute;left:0;right:0;top:100%;flex-direction:column;
    background:var(--paper);border-bottom:1px solid var(--line);padding:20px 34px 26px;
    gap:4px;align-items:flex-start;box-shadow:var(--shadow-lg);
  }
  .nav.on-dark .nav-links.open{background:var(--deep-2);color:#F5F1E8}
  .nav-links.open a{padding:11px 0;font-size:1rem;width:100%}
  .nav-links.open .btn{margin-top:12px;width:100%}
  .cards{grid-template-columns:1fr}
  .cards.two{grid-template-columns:1fr}
  .why-grid{grid-template-columns:1fr;gap:40px}
  .why-intro{position:static}
  .hero-foot{grid-template-columns:1fr 1fr}
  .hero-foot div:nth-child(3){border-left:none;padding-left:0}
  .hero-main{grid-template-columns:1fr;gap:0}
  .hero-badge{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:none}
  .stat{border-top:1px solid var(--line-2)}
  .split{grid-template-columns:1fr}
  .split-col:first-child{border-right:none;border-bottom:1px solid var(--line)}
  .form-shell{grid-template-columns:1fr;gap:44px}
  .cert-grid{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr 1fr;gap:38px}
  .specs{grid-template-columns:1fr;gap:0}
  .oem-grid{grid-template-columns:1fr;gap:40px}
  .oem-media{position:static;aspect-ratio:16/10;order:-1}
  .about-grid{grid-template-columns:1fr;gap:36px}
}
@media(max-width:640px){
  body{font-size:16px}
  .wrap,.wrap-narrow{padding:0 22px}
  section{padding:68px 0}
  .hero{padding-top:130px}
  .hero-copy{padding-top:40px}
  .hero-foot{grid-template-columns:1fr;margin-top:52px}
  .hero-foot div{border-left:none;border-top:1px solid rgba(245,241,232,.12);padding:20px 0}
  .hero-foot div:first-child{border-top:none}
  .hero-cta .btn{width:100%}
  .form{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .shapes{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr}
  .split-col{padding:38px 26px}
  .page-head{padding:96px 0 54px}
  .ptable th,.ptable td{padding:14px 12px;font-size:.84rem}
  .cta-in{gap:26px}
}