/* ==========================================================================
   WINDTURBINE — small wind power systems
   Design system: light industrial, teal + amber
   ========================================================================== */

:root{
  --ink:#0c1c26;
  --ink-2:#3d5561;
  --ink-3:#6b8290;
  --primary:#0b5563;
  --primary-d:#083f4a;
  --primary-l:#12798a;
  --accent:#e0993a;
  --accent-d:#c47f22;
  --bg:#ffffff;
  --surface:#f4f7f8;
  --surface-2:#eaf1f2;
  --line:#dde7ea;
  --line-2:#c9d8dc;
  --radius:14px;
  --radius-s:9px;
  --shadow:0 1px 2px rgba(12,28,38,.05),0 8px 24px -12px rgba(12,28,38,.18);
  --shadow-lg:0 24px 60px -28px rgba(12,28,38,.30);
  --max:1180px;
  --font:"Inter","Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-l)}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.2;letter-spacing:-.02em;font-weight:700;color:var(--ink)}
h1{font-size:clamp(2.1rem,4.6vw,3.9rem);letter-spacing:-.03em}
h2{font-size:clamp(1.6rem,2.9vw,2.5rem)}
h3{font-size:1.15rem;letter-spacing:-.01em}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.center{text-align:center}
.mono{font-family:var(--mono);font-size:.85em;letter-spacing:.02em}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.85em 1.5em;border-radius:100px;font-weight:600;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:.22s ease;white-space:nowrap;
  font-family:inherit;
}
.btn svg{width:15px;height:15px;flex:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -10px rgba(11,85,99,.7)}
.btn-primary:hover{background:var(--primary-d);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#221503}
.btn-accent:hover{background:var(--accent-d);color:#221503;transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-2);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:#fff}
.btn-on-dark{border-color:rgba(255,255,255,.42);color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(4px)}
.btn-on-dark:hover{background:#fff;color:var(--primary);border-color:#fff}
.btn-lg{padding:1.05em 1.9em;font-size:1rem}

/* ---------- header ---------- */
.hdr{
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s,background .25s;
}
.hdr.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -20px rgba(12,28,38,.5)}
.hdr-in{display:flex;align-items:center;gap:28px;height:74px}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{width:34px;height:34px;flex:none}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt b{font-size:1.06rem;letter-spacing:.14em;font-weight:800}
.brand-txt em{font-style:normal;font-size:.6rem;letter-spacing:.16em;color:var(--ink-3);text-transform:uppercase;margin-top:3px}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{
  padding:.55em .85em;border-radius:8px;font-size:.92rem;font-weight:500;color:var(--ink-2);
  transition:.18s;
}
.nav a:hover{background:var(--surface);color:var(--ink)}
.nav a.on{color:var(--primary);font-weight:650}
.hdr-act{display:flex;align-items:center;gap:10px;flex:none}
.lang-btn{
  display:inline-flex;align-items:center;gap:6px;padding:.5em .8em;border-radius:8px;
  border:1px solid var(--line);font-size:.85rem;color:var(--ink-2);background:#fff;
}
.lang-btn:hover{border-color:var(--primary);color:var(--primary)}
.lang-btn svg{width:14px;height:14px}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
.burger span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}
.hdr.open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hdr.open .burger span:nth-child(2){opacity:0}
.hdr.open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media(max-width:960px){
  .nav{
    position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;
    padding:12px 16px 20px;border-bottom:1px solid var(--line);gap:2px;
    box-shadow:var(--shadow);display:none;
  }
  .hdr.open .nav{display:flex}
  .nav a{padding:.75em .9em;font-size:1rem}
  .hdr-act{margin-left:auto}
  .hdr-act .btn{display:none}
  .burger{display:flex}
  .hdr-in{height:66px}
  .nav{top:66px}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--primary-d);isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 55%}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(6,32,40,.93) 0%,rgba(6,32,40,.80) 42%,rgba(6,32,40,.34) 72%,rgba(6,32,40,.18) 100%);
}
.hero-in{padding:clamp(72px,10vw,132px) 0 clamp(56px,7vw,92px);max-width:800px}
.kicker{
  display:inline-flex;align-items:center;gap:9px;font-size:.75rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:#8fd8c8;margin-bottom:22px;
}
.kicker::before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}
.hero h1{color:#fff;max-width:15ch}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero .lead{color:rgba(255,255,255,.82);font-size:clamp(1.02rem,1.35vw,1.18rem);max-width:56ch;margin:22px 0 32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:48px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.16);border-radius:12px;overflow:hidden;max-width:760px}
.hero-stats>div{background:rgba(8,36,45,.44);padding:18px 20px;backdrop-filter:blur(3px)}
.hero-stats b{display:block;color:#fff;font-size:1.5rem;font-weight:700;letter-spacing:-.02em;line-height:1.1}
.hero-stats span{display:block;color:rgba(255,255,255,.62);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;margin-top:7px}
@media(max-width:760px){
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}

/* ---------- page banner ---------- */
.banner{background:linear-gradient(160deg,#0a4653 0%,#0b5563 55%,#10657a 100%);color:#fff;position:relative;overflow:hidden}
.banner::after{
  content:"";position:absolute;right:-8%;top:-40%;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,153,58,.22),transparent 62%);
}
.banner-in{padding:clamp(48px,6vw,76px) 0 clamp(44px,5vw,62px);position:relative;z-index:1}
.banner h1{color:#fff;font-size:clamp(1.9rem,3.6vw,3rem);max-width:24ch}
.banner p{color:rgba(255,255,255,.78);max-width:62ch;margin:14px 0 0;font-size:1.02rem}
.crumb{font-size:.78rem;letter-spacing:.06em;color:rgba(255,255,255,.55);margin-bottom:16px}
.crumb a{color:rgba(255,255,255,.8)}
.crumb span{opacity:.45;margin:0 7px}

/* ---------- sections ---------- */
.sec{padding:clamp(56px,7vw,92px) 0}
.sec.surface{background:var(--surface)}
.sec.tight{padding:clamp(40px,5vw,64px) 0}
.sec-head{max-width:720px;margin-bottom:clamp(32px,4vw,52px)}
.sec-head.center{margin-left:auto;margin-right:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.73rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--primary-l);margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent)}
.sec-head h2{margin-bottom:.4em}
.sec-head p{color:var(--ink-2);font-size:1.03rem;margin:0}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.g-3,.g-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.25s ease;position:relative;
}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-2px)}
.card-ico{
  width:44px;height:44px;border-radius:11px;background:rgba(11,85,99,.08);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--primary);
}
.card-ico svg{width:22px;height:22px}
.card h3{margin-bottom:.45em;font-size:1.06rem}
.card p{margin:0;color:var(--ink-2);font-size:.94rem}

/* ---------- trust strip ---------- */
.strip{background:var(--ink);color:#fff}
.strip-in{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.strip-in>div{padding:26px 26px 26px 0;border-right:1px solid rgba(255,255,255,.12)}
.strip-in>div:last-child{border-right:0}
.strip-in b{display:block;font-size:1.02rem;letter-spacing:-.01em;color:#fff;margin-bottom:4px}
.strip-in span{font-size:.82rem;color:rgba(255,255,255,.55)}
@media(max-width:880px){
  .strip-in{grid-template-columns:repeat(2,1fr)}
  .strip-in>div{border-bottom:1px solid rgba(255,255,255,.12);padding:20px 18px 20px 0}
  .strip-in>div:nth-child(2n){border-right:0}
}

/* ---------- product cards ---------- */
.prod{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:.25s ease;height:100%;
}
.prod:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:var(--line-2)}
.prod-img{
  aspect-ratio:16/11;background:linear-gradient(165deg,#eaf2f3,#dbe8ea);
  display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.prod-img svg{width:62%;height:auto;max-height:88%;filter:drop-shadow(0 12px 22px rgba(11,85,99,.14))}
.prod-tag{
  position:absolute;top:12px;left:12px;background:rgba(255,255,255,.94);color:var(--primary);
  font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  padding:5px 10px;border-radius:100px;backdrop-filter:blur(4px);
}
.prod-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.prod-body h3{margin-bottom:.3em;font-size:1.14rem}
.prod-body .desc{color:var(--ink-2);font-size:.9rem;margin-bottom:16px}
.spec-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;margin:0 0 18px;padding-top:16px;border-top:1px solid var(--line)}
.spec-list div{font-size:.8rem;color:var(--ink-3);line-height:1.35}
.spec-list b{display:block;color:var(--ink);font-size:.9rem;font-weight:650;letter-spacing:-.01em}
.prod-link{margin-top:auto;font-size:.86rem;font-weight:650;display:inline-flex;align-items:center;gap:6px;color:var(--primary)}
.prod-link:hover{gap:10px}
.prod-link svg{width:14px;height:14px}

/* ---------- split section ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,64px);align-items:center}
.split.rev .split-media{order:2}
@media(max-width:880px){.split{grid-template-columns:1fr}.split.rev .split-media{order:0}}
.split-media img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;aspect-ratio:4/3;object-fit:cover}
.split-body h2{margin-bottom:.5em}
.split-body p{color:var(--ink-2)}
.check-list{margin:24px 0 28px;display:grid;gap:12px}
.check-list li{display:flex;gap:11px;font-size:.94rem;color:var(--ink-2);align-items:flex-start}
.check-list li svg{width:17px;height:17px;flex:none;margin-top:3px;color:var(--primary-l)}

/* ---------- applications ---------- */
.app{
  position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#fff;padding:26px;min-height:190px;display:flex;flex-direction:column;
  transition:.25s;
}
.app:hover{border-color:var(--primary);box-shadow:var(--shadow)}
.app .n{font-family:var(--mono);font-size:.72rem;color:var(--accent);letter-spacing:.1em;margin-bottom:auto}
.app h3{font-size:1.02rem;margin:14px 0 .35em}
.app p{margin:0;font-size:.88rem;color:var(--ink-2)}

/* ---------- spec table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:.88rem;min-width:680px}
thead th{
  text-align:left;padding:14px 16px;background:var(--surface);font-size:.74rem;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody td:first-child{color:var(--ink);font-weight:600}
tbody tr:hover td{background:#fafcfc}
.tnote{font-size:.78rem;color:var(--ink-3);margin-top:12px}

/* ---------- tabs ---------- */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:26px;border-bottom:1px solid var(--line);padding-bottom:0}
.tab{
  border:0;background:none;font-family:inherit;font-size:.92rem;font-weight:600;color:var(--ink-3);
  padding:11px 16px;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:.18s;
}
.tab:hover{color:var(--ink)}
.tab.on{color:var(--primary);border-bottom-color:var(--accent)}
.tab-panel{display:none}
.tab-panel.on{display:block;animation:fade .3s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- steps ---------- */
.steps{counter-reset:s;display:grid;gap:0}
.step{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-family:var(--mono);font-size:.85rem;color:var(--accent);padding-top:4px;
  border-right:1px solid var(--line);
}
.step h3{margin-bottom:.3em;font-size:1.02rem}
.step p{margin:0;color:var(--ink-2);font-size:.93rem}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{
  cursor:pointer;font-weight:600;font-size:1rem;list-style:none;display:flex;
  justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-weight:400;font-size:1.35rem;color:var(--primary-l);line-height:1;flex:none}
.faq details[open] summary::after{content:"–"}
.faq p{margin:12px 0 0;color:var(--ink-2);font-size:.94rem;max-width:74ch}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(120deg,#083f4a,#0b5563 48%,#14707f);color:#fff;
  border-radius:18px;padding:clamp(34px,5vw,58px);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(255,255,255,.13);
}
.cta-band h2{color:#fff;margin-bottom:.35em;max-width:22ch}
.cta-band p{color:rgba(255,255,255,.76);margin-bottom:26px;max-width:52ch}
.cta-flex{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,4vw,58px);align-items:start}
@media(max-width:880px){.contact-grid{grid-template-columns:1fr}}
.info-list{display:grid;gap:20px;margin-top:8px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item .ico{
  width:38px;height:38px;border-radius:10px;background:rgba(11,85,99,.08);color:var(--primary);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.info-item .ico svg{width:18px;height:18px}
.info-item b{display:block;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:3px;font-weight:700}
.info-item span,.info-item a{font-size:.98rem;color:var(--ink)}

.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(24px,3vw,34px);box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.8rem;font-weight:650;letter-spacing:.04em;color:var(--ink-2);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:.95rem;color:var(--ink);background:#fff;
  border:1px solid var(--line-2);border-radius:var(--radius-s);padding:11px 13px;transition:.18s;
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-l);box-shadow:0 0 0 3px rgba(18,121,138,.13);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){.field-row{grid-template-columns:1fr}}
.form-note{font-size:.78rem;color:var(--ink-3);margin:14px 0 0}
.form-ok{display:none;background:#eaf7f0;border:1px solid #bfe6d0;color:#146b46;padding:12px 14px;border-radius:9px;font-size:.9rem;margin-bottom:16px}
.form-ok.on{display:block}

/* ---------- footer ---------- */
.ftr{background:var(--ink);color:rgba(255,255,255,.68);padding:clamp(48px,6vw,72px) 0 0;margin-top:0}
.ftr-cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
@media(max-width:880px){.ftr-cols{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:560px){.ftr-cols{grid-template-columns:1fr}}
.ftr .brand{color:#fff;margin-bottom:16px}
.ftr .brand-txt em{color:rgba(255,255,255,.42)}
.ftr-about{font-size:.88rem;line-height:1.7;max-width:34ch}
.ftr-col h4{color:#fff;font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.ftr-col a,.ftr-col p{display:block;font-size:.88rem;color:rgba(255,255,255,.66);margin:0 0 9px;transition:.18s}
.ftr-col a:hover{color:#fff}
.ftr-btm{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:.8rem;color:rgba(255,255,255,.45);
}
.ftr-btm a{color:rgba(255,255,255,.6)}

/* ---------- misc ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.2,.7,.3,1),transform .6s cubic-bezier(.2,.7,.3,1)}
.js .reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.badge{font-size:.75rem;letter-spacing:.06em;color:var(--ink-2);border:1px solid var(--line-2);padding:6px 12px;border-radius:100px;background:#fff}
.hr{height:1px;background:var(--line);border:0;margin:0}
.lead-2{font-size:1.05rem;color:var(--ink-2);max-width:66ch}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 20px;font-size:.9rem;margin:20px 0 0}
.kv dt{color:var(--ink-3)}
.kv dd{margin:0;color:var(--ink);font-weight:600}

/* ==========================================================================
   v4 — SEO page components (breadcrumbs, product hero, article layout, FAQ)
   ========================================================================== */

/* breadcrumbs */
.crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.78rem;color:var(--ink-3);padding:22px 0 0}
.crumbs a{color:var(--ink-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs i{font-style:normal;opacity:.45}
.crumbs span[aria-current]{color:var(--ink-2);font-weight:600}

/* product hero */
.p-hero{background:linear-gradient(180deg,var(--surface) 0%,#fff 100%);border-bottom:1px solid var(--line);padding:26px 0 54px}
.p-hero-in{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(24px,4vw,56px);align-items:center}
.p-art{position:relative;background:radial-gradient(120% 100% at 50% 0%,#fff 0%,var(--surface-2) 100%);
  border:1px solid var(--line);border-radius:22px;padding:28px;display:flex;align-items:center;justify-content:center;min-height:320px}
.p-art::after{content:"";position:absolute;inset:auto 12% 10% 12%;height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}
.p-art .p-svg{width:min(80%,260px)}
.p-art svg{width:100%;height:auto;filter:drop-shadow(0 18px 30px rgba(11,85,99,.16))}
.p-badge{position:absolute;top:16px;left:16px;background:var(--primary);color:#fff;font-size:.72rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;padding:6px 10px;border-radius:999px}
.p-copy h1{font-size:clamp(1.9rem,3.6vw,3rem);margin-bottom:.3em}

/* quick specs */
.qspec{list-style:none;padding:0;margin:26px 0 28px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.qspec li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.qspec b{display:block;font-size:1.02rem;letter-spacing:-.01em}
.qspec span{display:block;font-size:.72rem;color:var(--ink-3);margin-top:3px;text-transform:uppercase;letter-spacing:.06em}

/* article + sidebar layout */
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(28px,4vw,64px);align-items:start}
.art-body{min-width:0;max-width:74ch}
.art-body h1{font-size:clamp(1.9rem,3.4vw,2.9rem);margin-bottom:.35em}
.art-body h2{font-size:clamp(1.25rem,2vw,1.6rem);margin-top:2.1em;margin-bottom:.55em;padding-top:.2em}
.art-body h3{font-size:1.05rem;margin-top:1.6em;margin-bottom:.4em}
.art-body p{margin:0 0 1.05em;color:var(--ink-2)}
.art-body .lead-2{color:var(--ink-2);font-size:1.09rem;margin-bottom:1.2em}
.art-body table td,.art-body table th{vertical-align:top}
.art-side{position:sticky;top:88px;display:grid;gap:16px}
.side-card{padding:20px}
.side-card h3{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);margin-bottom:.9em}
.side-card .btn{width:100%;justify-content:center;margin-top:14px}
.side-dl{display:grid;grid-template-columns:1fr auto;gap:8px 12px;margin:0 0 4px;font-size:.86rem}
.side-dl dt{color:var(--ink-3)}
.side-dl dd{margin:0;font-weight:650;text-align:right}
.side-big{font-size:1.5rem;font-weight:750;letter-spacing:-.02em;margin:0 0 6px}
.side-link{display:flex;flex-direction:column;gap:1px;padding:10px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.side-link:last-child{border-bottom:0}
.side-link b{font-size:.8rem;color:var(--primary);letter-spacing:.04em}
.side-link span{font-size:.86rem;color:var(--ink-2)}
.side-link:hover span{color:var(--primary)}
.side-link-all{font-size:.82rem;color:var(--primary);font-weight:650;padding-top:12px}

/* feature + use grids */
.feat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:22px 0 6px}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.feat h3{font-size:.95rem;margin:0 0 .35em}
.feat p{margin:0;font-size:.88rem;color:var(--ink-2)}
.use-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:22px 0 6px}
.use-card{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff}
.use-card h3{font-size:.95rem;margin:0 0 .4em}
.use-card h3 a{color:var(--ink)}
.use-card h3 a:hover{color:var(--primary)}
.use-card p{margin:0;font-size:.88rem;color:var(--ink-2)}

/* config definition list */
.cfg-dl{display:grid;grid-template-columns:minmax(120px,190px) 1fr;gap:10px 18px;margin:20px 0 8px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;font-size:.9rem}
.cfg-dl dt{color:var(--ink-3)}
.cfg-dl dd{margin:0;font-weight:600}

/* FAQ accordion */
.faq-list{display:grid;gap:10px;margin:18px 0 8px}
.faq-item{border:1px solid var(--line);border-radius:12px;background:#fff;padding:0 18px;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:var(--line-2);box-shadow:var(--shadow)}
.faq-item summary{cursor:pointer;padding:15px 0;font-weight:650;font-size:.95rem;list-style:none;display:flex;gap:12px;align-items:flex-start}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"+";color:var(--primary);font-weight:700;font-size:1.05rem;line-height:1.2;transition:transform .2s}
.faq-item[open] summary::before{content:"–"}
.faq-a{padding:0 0 16px 26px;color:var(--ink-2);font-size:.92rem;line-height:1.7}

/* blog cards */
.post-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.post-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;color:var(--ink);transition:transform .2s,box-shadow .2s,border-color .2s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line-2);color:var(--ink)}
.post-meta{font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.post-card h3{font-size:1.05rem;margin:0}
.post-card p{margin:0;font-size:.9rem;color:var(--ink-2)}
.post-more{margin-top:auto;padding-top:10px;font-size:.84rem;font-weight:650;color:var(--primary)}

/* article prose + toc */
.toc{display:grid;gap:6px;background:var(--surface);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;
  padding:16px 20px;margin:24px 0 8px;font-size:.88rem}
.toc b{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.toc a{color:var(--ink-2);padding:2px 0}
.toc a:hover{color:var(--primary)}
.prose h2{scroll-margin-top:90px}
.prose ul,.prose ol{color:var(--ink-2);padding-left:1.2em;margin:0 0 1.1em}
.prose li{margin-bottom:.35em}

/* mini spec list in product cards */
.mini-spec{list-style:none;padding:0;margin:0 0 14px;font-size:.8rem;color:var(--ink-3);display:grid;gap:4px}
.mini-spec li{position:relative;padding-left:12px}
.mini-spec li::before{content:"";position:absolute;left:0;top:.55em;width:4px;height:4px;border-radius:50%;background:var(--accent)}

@media(max-width:960px){
  .p-hero-in{grid-template-columns:1fr}
  .p-art{min-height:240px;order:2}
  .art-grid{grid-template-columns:1fr}
  .art-side{position:static;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
  .feat-grid{grid-template-columns:1fr}
  .qspec{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ==========================================================================
   Chat / lead widget
   ========================================================================== */
.cw{position:fixed;right:20px;bottom:20px;z-index:120;font-family:var(--font)}
.cw[hidden]{display:none}
.cw-fab{display:flex;align-items:center;gap:10px;background:var(--primary);color:#fff;border:0;border-radius:999px;
  padding:13px 20px 13px 16px;cursor:pointer;box-shadow:0 12px 30px -10px rgba(11,85,99,.55);font-size:.9rem;font-weight:650;
  transition:transform .18s ease,box-shadow .18s ease}
.cw-fab:hover{transform:translateY(-2px);box-shadow:0 18px 38px -12px rgba(11,85,99,.6)}
.cw-fab-ico svg{width:20px;height:20px;display:block}
.cw-dot{width:9px;height:9px;border-radius:50%;background:#5fe0a8;box-shadow:0 0 0 3px rgba(95,224,168,.25);margin-left:2px}
.cw-panel{position:absolute;right:0;bottom:70px;width:min(360px,calc(100vw - 40px));background:#fff;border:1px solid var(--line);
  border-radius:18px;box-shadow:0 30px 70px -24px rgba(12,28,38,.45);overflow:hidden;display:none}
.cw.open .cw-panel{display:block;animation:cwIn .22s ease both}
@keyframes cwIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.cw-head{display:flex;gap:12px;align-items:flex-start;padding:16px 16px 14px;background:linear-gradient(135deg,var(--primary),var(--primary-l));color:#fff}
.cw-ava{width:38px;height:38px;flex:0 0 38px;border-radius:50%;background:rgba(255,255,255,.16);display:grid;place-items:center}
.cw-ava .brand-mark svg{width:26px;height:26px}
.cw-id{flex:1;min-width:0}
.cw-id b{display:block;font-size:.95rem}
.cw-id span{display:block;font-size:.76rem;color:rgba(255,255,255,.8);line-height:1.45}
.cw-live{display:inline-block;width:6px;height:6px;border-radius:50%;background:#5fe0a8;margin-right:5px;vertical-align:middle}
.cw-x{background:none;border:0;color:rgba(255,255,255,.8);font-size:22px;line-height:1;cursor:pointer;padding:0 2px}
.cw-x:hover{color:#fff}
.cw-body{padding:14px 16px 16px;max-height:min(62vh,520px);overflow:auto}
.cw-links{display:grid;gap:6px;margin-bottom:12px}
.cw-link{display:flex;align-items:center;gap:10px;padding:8px;border-radius:10px;color:var(--ink);text-align:left;
  background:none;border:0;font:inherit;cursor:pointer;width:100%}
.cw-link:hover{background:var(--surface);color:var(--ink)}
.cw-li{width:30px;height:30px;flex:0 0 30px;border-radius:8px;background:var(--surface-2);display:grid;place-items:center;
  font-size:.68rem;font-weight:750;color:var(--primary);letter-spacing:.02em}
.cw-li svg{width:15px;height:15px}
.cw-link b{display:block;font-size:.86rem}
.cw-link em{display:block;font-style:normal;font-size:.76rem;color:var(--ink-3)}
.cw-form{display:grid;gap:8px;border-top:1px solid var(--line);padding-top:14px}
.cw-form input,.cw-form textarea{width:100%;border:1px solid var(--line-2);border-radius:10px;padding:10px 12px;
  font:inherit;font-size:.88rem;color:var(--ink);background:#fff;resize:vertical}
.cw-form input:focus,.cw-form textarea:focus{outline:2px solid rgba(18,121,138,.35);outline-offset:1px;border-color:var(--primary-l)}
.cw-form .btn{width:100%;justify-content:center}
.cw-note{font-size:.72rem;color:var(--ink-3);margin:0}
.cw-msg{font-size:.8rem;margin:0;min-height:0}
.cw-msg.ok{color:#0f7a4f}
.cw-msg.bad{color:#b3261e}
.cw-shake{animation:cwShake .3s ease}
@keyframes cwShake{0%,100%{transform:none}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
@media(max-width:520px){
  .cw{right:12px;bottom:12px}
  .cw-fab-txt{display:none}
  .cw-fab{padding:14px}
  .cw-panel{width:calc(100vw - 24px);bottom:64px}
}
@media print{.cw{display:none}}

/* ==========================================================================
   Contact details rendered as images (anti-harvest) + copy helpers
   ========================================================================== */
.ct{height:.84em;width:auto;display:inline-block;vertical-align:baseline}
.ct-link{display:inline-flex;align-items:baseline;transition:opacity .18s ease}
.ct-link:hover{opacity:.78}
.ct-copy{background:none;border:0;padding:0;margin:0;font:inherit;color:inherit;cursor:pointer;
  display:inline-flex;align-items:baseline;transition:opacity .18s ease}
.ct-copy:hover{opacity:.78}
.ct-inline{display:inline-flex;align-items:baseline;gap:6px;flex-wrap:wrap}
.ct-hint{font-style:normal;font-size:.88em;color:var(--ink-3)}
.ct-copied{display:none}
.ct-copied.on{display:inline-block;margin-left:6px;font-size:.72rem;font-weight:650;color:var(--primary)}
.info-item .ct{height:.98em}
.ftr .ct-row{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:0 0 9px}
.ftr .ct{height:.95em}
.ftr .ct-copy:hover{opacity:.8}
.cw-link em .ct{height:.95em;vertical-align:-2px}

/* visually hidden, still read by screen readers */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ==========================================================================
   Interactive calculator (link-earning tool page)
   ========================================================================== */
.calc{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);background:#fff;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.calc-in{padding:clamp(20px,3vw,32px);background:var(--surface);border-right:1px solid var(--line)}
.calc-out{padding:clamp(20px,3vw,32px)}
.calc h2{font-size:.76rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3);margin:0 0 18px;font-weight:700}
.calc-f{display:block;margin-bottom:15px}
.calc-f span{display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  font-size:.86rem;color:var(--ink-2);margin-bottom:6px}
.calc-f em{font-style:normal;font-size:.76rem;color:var(--ink-3)}
.calc-f input{width:100%;border:1px solid var(--line-2);border-radius:10px;padding:10px 12px;
  font:inherit;font-weight:650;color:var(--ink);background:#fff}
.calc-f input:focus{outline:2px solid rgba(18,121,138,.3);outline-offset:1px;border-color:var(--primary-l)}
.calc-res{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.calc-k{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.calc-k span{display:block;font-size:.72rem;color:var(--ink-3);margin-bottom:3px}
.calc-k b{font-size:1.02rem;letter-spacing:-.01em;font-weight:750}
.calc-k b i{font-style:normal}
.calc-k-main{grid-column:1/-1;background:var(--primary);border-color:var(--primary)}
.calc-k-main span{color:rgba(255,255,255,.72)}
.calc-k-main b{color:#fff;font-size:1.45rem}
@media(max-width:860px){
  .calc{grid-template-columns:1fr}
  .calc-in{border-right:0;border-bottom:1px solid var(--line)}
  .calc-res{grid-template-columns:1fr}
}

/* ==========================================================================
   Interactive calculator (link-earning tool page)
   ========================================================================== */
.calc{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);background:#fff;
  border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.calc-in{padding:clamp(20px,3vw,32px);background:var(--surface);border-right:1px solid var(--line)}
.calc-out{padding:clamp(20px,3vw,32px)}
.calc h2{font-size:.76rem;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-3);margin:0 0 18px;font-weight:700}
.calc-f{display:block;margin-bottom:15px}
.calc-f span{display:flex;justify-content:space-between;align-items:baseline;gap:10px;
  font-size:.86rem;color:var(--ink-2);margin-bottom:6px}
.calc-f em{font-style:normal;font-size:.76rem;color:var(--ink-3)}
.calc-f input{width:100%;border:1px solid var(--line-2);border-radius:10px;padding:10px 12px;
  font:inherit;font-weight:650;color:var(--ink);background:#fff}
.calc-f input:focus{outline:2px solid rgba(18,121,138,.3);outline-offset:1px;border-color:var(--primary-l)}
.calc-res{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}
.calc-k{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.calc-k span{display:block;font-size:.72rem;color:var(--ink-3);margin-bottom:3px}
.calc-k b{font-size:1.02rem;letter-spacing:-.01em;font-weight:750}
.calc-k b i{font-style:normal}
.calc-k-main{grid-column:1/-1;background:var(--primary);border-color:var(--primary)}
.calc-k-main span{color:rgba(255,255,255,.72)}
.calc-k-main b{color:#fff;font-size:1.45rem}
@media(max-width:860px){
  .calc{grid-template-columns:1fr}
  .calc-in{border-right:0;border-bottom:1px solid var(--line)}
  .calc-res{grid-template-columns:1fr}
}