/* ==========================================================================
   Cronus — Multi-Head Ultrafine Grinding Mill
   Design tokens
   ========================================================================== */
:root{
  --blue-950:#082141;
  --blue-900:#0A2E5C;
  --blue-700:#0B3D91;
  --blue-600:#1150B4;
  --blue-500:#1D63CF;
  --blue-100:#E7F0FC;
  --blue-050:#F2F7FE;
  --accent:#FF7A1A;
  --accent-dark:#E5660A;
  --ink:#1C2A3A;
  --ink-soft:#41546B;
  --ink-mute:#6B7D92;
  --line:#E3EAF3;
  --bg:#FFFFFF;
  --bg-alt:#F4F7FB;
  --bg-dark:#0A1F38;
  --radius:16px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(10,33,65,.06),0 4px 14px rgba(10,33,65,.06);
  --shadow-2:0 2px 6px rgba(10,33,65,.08),0 18px 44px rgba(10,33,65,.12);
  --shadow-3:0 6px 16px rgba(10,33,65,.14),0 32px 72px rgba(10,33,65,.18);
  --container:1200px;
  --sec-pad:clamp(56px,7.5vw,104px);
  --font:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html:focus-within{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;height:auto}
a{color:var(--blue-700);text-decoration:none}
a:hover{color:var(--blue-500)}
h1,h2,h3,h4{line-height:1.22;color:var(--blue-950);font-weight:800;letter-spacing:-.01em}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}

.container{width:min(100% - 40px,var(--container));margin-inline:auto}
.container-narrow{width:min(100% - 40px,900px);margin-inline:auto}
section[id],body[id]{scroll-margin-top:86px}

/* ============ Section scaffolding ============ */
.section{padding:var(--sec-pad) 0;background:var(--bg)}
.section-alt{background:var(--bg-alt)}
.section-dark{background:linear-gradient(160deg,var(--bg-dark) 0%,#0E2A4E 60%,#123A6B 100%);color:#E8F1FB}
.section-dark h2,.section-dark h3{color:#fff}
.section-contact{background:linear-gradient(160deg,var(--blue-900),var(--blue-700) 65%,#123A7E);color:#EAF2FC}
.section-contact h2{color:#fff}
.section-heading{display:grid;grid-template-columns:1.2fr .9fr;gap:24px 48px;align-items:end;margin-bottom:clamp(32px,4vw,56px)}
.section-heading p{color:var(--ink-soft)}
.section-heading.light p{color:#B9CFE8}
.section-kicker{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:12px}
.section-kicker.light{color:#FFB37A}
.section-heading h2{font-size:clamp(1.5rem,3vw,2.25rem)}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:14px 28px;font-size:.98rem;font-weight:700;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);color:#fff;box-shadow:0 10px 24px rgba(255,122,26,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,26,.45);color:#fff}
.btn-secondary{background:var(--blue-700);color:#fff;box-shadow:var(--shadow-1)}
.btn-secondary:hover{background:var(--blue-600);transform:translateY(-2px);color:#fff}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.45);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-outline{border:1.5px solid rgba(255,255,255,.4);color:#fff;background:transparent}
.btn-outline:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-block{width:100%;justify-content:center}

/* ============ Header ============ */
.site-header{position:fixed;inset:0 0 auto 0;z-index:100;transition:background .3s ease,box-shadow .3s ease;padding:14px 0;background:linear-gradient(180deg,rgba(8,33,65,.55),rgba(8,33,65,0))}
.site-header.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);box-shadow:var(--shadow-1);padding:8px 0}
.nav-shell{display:flex;align-items:center;gap:20px}
.brand img{height:46px;width:auto;transition:height .3s ease}
.scrolled .brand img{height:40px}
.main-nav{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
.main-nav a{color:#fff;font-weight:600;font-size:.92rem;padding:8px 12px;border-radius:8px;transition:background .2s,color .2s}
.main-nav a:hover,.main-nav a.active{background:rgba(255,255,255,.16);color:#fff}
.scrolled .main-nav a{color:var(--ink-soft)}
.scrolled .main-nav a:hover,.scrolled .main-nav a.active{background:var(--blue-100);color:var(--blue-700)}
.nav-cta{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:700;padding:11px 22px;border-radius:999px;box-shadow:0 8px 20px rgba(255,122,26,.4);transition:transform .2s}
.nav-cta:hover{transform:translateY(-2px);color:#fff}
.menu-toggle{display:none;margin-left:auto;background:transparent;border:0;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;z-index:110}
.menu-toggle span{width:24px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
.scrolled .menu-toggle span{background:var(--blue-900)}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* ============ Hero ============ */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;background:var(--blue-950)}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 30%}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,26,52,.92) 0%,rgba(10,46,92,.82) 42%,rgba(10,46,92,.25) 100%)}
.hero-content{position:relative;z-index:2;padding:140px 0 100px;color:#fff;max-width:760px}
.hero .eyebrow{color:#FFB37A;font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.82rem;margin-bottom:14px}
.hero h1{color:#fff;font-size:clamp(2.1rem,5vw,3.6rem);margin-bottom:18px;text-shadow:0 4px 24px rgba(0,0,0,.35)}
.hero-lead{font-size:clamp(1rem,1.6vw,1.2rem);color:#DCE8F6;max-width:620px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-facts{display:grid;grid-template-columns:repeat(4,auto);gap:12px 36px;width:fit-content}
.hero-facts li{display:flex;flex-direction:column}
.hero-facts strong{font-size:1.5rem;font-weight:800;color:#fff;line-height:1.2}
.hero-facts span{font-size:.8rem;color:#A9C2E0}

/* ============ Trust strip ============ */
.trust-strip{background:#fff;border-bottom:1px solid var(--line)}
.trust-grid{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px 32px;padding:20px 0}
.trust-item{display:flex;flex-direction:column;line-height:1.35}
.trust-item strong{font-size:1rem;color:var(--blue-900)}
.trust-item span{font-size:.8rem;color:var(--ink-mute)}
.trust-item img{height:34px;width:auto}

/* ============ Definition cards ============ */
.definition-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:28px;margin-bottom:clamp(36px,4vw,56px)}
.def-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s}
.def-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.def-card.featured{background:linear-gradient(160deg,#0B3D91,#1D63CF);color:#EAF2FC;border:0}
.def-card.featured h3{color:#fff}
.def-card h3{font-size:1.15rem;margin-bottom:12px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.def-card p{color:var(--ink-soft);margin-bottom:16px}
.def-card.featured p{color:#D4E4F7}
.def-tag{font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;background:var(--blue-100);color:var(--blue-700);padding:4px 10px;border-radius:999px}
.def-tag.orange{background:rgba(255,122,26,.18);color:#FFB37A}
.tick-list li{position:relative;padding-left:26px;margin-bottom:8px;font-size:.95rem;color:var(--ink-soft)}
.def-card.featured .tick-list li{color:#D4E4F7}
.tick-list li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.tick-list.dim li::before{color:var(--ink-mute)}

.diagram-figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:26px;overflow-x:auto}
.diagram-figure svg{width:100%;min-width:680px;height:auto;display:block}
.diagram-figure figcaption{text-align:center;font-size:.85rem;color:var(--ink-mute);margin-top:12px}

/* ============ Company ============ */
.company-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,56px);align-items:center;margin-bottom:clamp(36px,5vw,64px)}
.company-copy p{color:var(--ink-soft);margin-bottom:16px}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:26px 0 28px}
.stat-row li{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 12px;text-align:center;box-shadow:var(--shadow-1)}
.stat-row strong{display:block;font-size:1.5rem;font-weight:800;color:var(--blue-700)}
.stat-row span{font-size:.76rem;color:var(--ink-mute)}
.company-visual{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.img-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line)}
.img-card img{width:100%;transition:transform .5s ease}
.img-card:hover img{transform:scale(1.03)}
.img-card figcaption{padding:12px 16px;font-size:.82rem;color:var(--ink-mute);background:#fff}

.honor-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:clamp(24px,3vw,40px);margin-bottom:clamp(36px,5vw,56px)}
.honor-block h3{font-size:1.25rem;margin-bottom:20px}
.cert-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.cert-grid figure{border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;background:#FBFDFF;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.cert-grid figure:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.cert-grid img{width:100%;height:150px;object-fit:contain;padding:8px;background:#fff}
.cert-grid figcaption{font-size:.78rem;font-weight:700;color:var(--ink-soft);text-align:center;padding:8px 6px 10px;border-top:1px solid var(--line)}
.cert-pdf a{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:6px;min-height:186px;padding:16px;text-align:center}
.cert-pdf strong{color:var(--blue-700);font-size:1.05rem}
.cert-pdf span{font-size:.78rem;color:var(--ink-mute)}

.gallery-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.gallery-4 figure{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);border:1px solid var(--line)}
.gallery-4 img{width:100%;height:220px;object-fit:cover;transition:transform .5s}
.gallery-4 figure:hover img{transform:scale(1.05)}

/* ============ Technology ============ */
.tech-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(28px,4vw,52px);align-items:start}
.tech-media{display:grid;gap:18px}
.tech-media .img-card.main{grid-column:1/-1}
.principle-steps{display:grid;gap:18px;margin-bottom:26px}
.principle-steps li{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow-1)}
.step-no{flex:0 0 40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--blue-700),var(--blue-500));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:1rem}
.principle-steps strong{color:var(--blue-950);display:block;margin-bottom:4px}
.principle-steps p{font-size:.92rem;color:var(--ink-soft)}
.structure-chips{background:var(--blue-050);border:1px solid var(--blue-100);border-radius:var(--radius);padding:22px 26px}
.structure-chips h3{font-size:1.02rem;margin-bottom:12px}
.structure-chips ul{display:flex;flex-wrap:wrap;gap:10px}
.structure-chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 16px;font-size:.85rem;font-weight:600;color:var(--ink-soft);box-shadow:var(--shadow-1)}

/* ============ Advantages ============ */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden}
.adv-card::after{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--blue-700),var(--blue-500));opacity:0;transition:opacity .25s}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-2)}
.adv-card:hover::after{opacity:1}
.adv-card h3{font-size:1.06rem;margin-bottom:12px}
.adv-card p{font-size:.93rem;color:var(--ink-soft)}
.adv-icon{display:inline-flex;width:52px;height:52px;border-radius:14px;background:var(--blue-100);color:var(--blue-700);align-items:center;justify-content:center;margin-bottom:16px}
.adv-card.extra{background:linear-gradient(160deg,var(--blue-700),var(--blue-500));border:0}
.adv-card.extra h3{color:#fff}
.adv-card.extra p{color:#D4E4F7}

/* ============ Comparison ============ */
.compare-table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-2);border:1px solid var(--line);margin-bottom:40px}
.compare-table{width:100%;border-collapse:collapse;background:#fff;min-width:640px}
.compare-table caption{padding:18px;font-size:.85rem;color:var(--ink-mute);text-align:left;background:var(--blue-050);border-bottom:1px solid var(--line)}
.compare-table th,.compare-table td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
.compare-table thead th{background:var(--blue-900);color:#fff;font-size:.88rem;letter-spacing:.03em}
.compare-table tbody th{color:var(--blue-950);font-weight:700;background:var(--blue-050);width:26%}
.compare-table .hl{background:#FFF6EE}
.compare-table thead .hl{background:var(--accent-dark);color:#fff}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0}
.bars-block{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:clamp(22px,3vw,36px)}
.bars-block h3{font-size:1.1rem;margin-bottom:20px}
.muted-note{font-size:.8rem;font-weight:500;color:var(--ink-mute)}
.bar-row{display:grid;grid-template-columns:220px 1fr 70px;align-items:center;gap:16px;margin-bottom:16px}
.bar-row span{font-size:.92rem;font-weight:600;color:var(--ink-soft)}
.bar-track{background:var(--blue-050);border-radius:999px;height:26px;overflow:hidden}
.bar{height:100%;width:0;border-radius:999px;background:var(--c,var(--blue-700));transition:width 1.2s cubic-bezier(.22,.8,.36,1)}
.bar-row b{font-weight:800;color:var(--blue-900);font-size:1.05rem}
.table-note{font-size:.82rem;color:var(--ink-mute);margin-top:14px}

/* ============ Materials ============ */
.material-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.material-grid figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s}
.material-grid figure:hover{transform:translateY(-5px);box-shadow:var(--shadow-2)}
.material-grid img{width:100%;height:170px;object-fit:cover}
.material-grid figcaption{padding:12px 16px 14px;font-weight:700;color:var(--blue-950);font-size:.95rem}
.material-grid figcaption small{display:block;font-weight:500;color:var(--ink-mute);font-size:.8rem;margin-top:2px}
.industry-band{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:clamp(22px,3vw,34px);margin-bottom:36px}
.industry-band h3{margin-bottom:16px;font-size:1.1rem}
.industry-list{display:flex;flex-wrap:wrap;gap:10px}
.industry-list li{background:var(--blue-050);border:1px solid var(--blue-100);color:var(--blue-900);border-radius:999px;padding:8px 18px;font-size:.88rem;font-weight:600}

/* ============ Video band ============ */
.video-band{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(26px,4vw,48px);align-items:center;background:linear-gradient(150deg,var(--blue-950),var(--blue-700));border-radius:var(--radius);padding:clamp(26px,4vw,48px);color:#fff;box-shadow:var(--shadow-3)}
.video-band h3{color:#fff;font-size:clamp(1.3rem,2.2vw,1.7rem);margin-bottom:10px}
.video-band p{color:#C6D8EE;margin-bottom:22px}
.video-btns{display:flex;gap:12px;flex-wrap:wrap}
.video-poster{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);cursor:pointer}
.video-poster img{width:100%;height:100%;object-fit:cover}
.video-poster::after{content:"";position:absolute;inset:0;background:rgba(8,33,65,.25);transition:background .25s}
.video-poster:hover::after{background:rgba(8,33,65,.05)}
.play-badge{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:72px;height:72px;border-radius:50%;background:rgba(255,255,255,.92);color:var(--blue-700);display:flex;align-items:center;justify-content:center;z-index:2;box-shadow:0 10px 30px rgba(0,0,0,.35);transition:transform .25s}
.video-poster:hover .play-badge{transform:translate(-50%,-50%) scale(1.1)}

/* ============ Cases ============ */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-2)}
.case-card.big{grid-column:span 2}
.case-card img{width:100%;height:200px;object-fit:cover}
.case-card.big img{height:calc(2 * 200px + 20px + 46px)}
.case-card figcaption{padding:12px 16px;font-size:.85rem;font-weight:600;color:var(--ink-soft);margin-top:auto}

/* ============ Specifications ============ */
.spec-table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-3);margin-bottom:22px}
.spec-table{width:100%;border-collapse:collapse;background:#fff;min-width:760px}
.spec-table caption{padding:18px;font-size:.85rem;color:var(--ink-mute);text-align:left;background:var(--blue-050)}
.spec-table th,.spec-table td{padding:14px 18px;border-bottom:1px solid var(--line);font-size:.93rem;text-align:center}
.spec-table thead th{background:var(--blue-900);color:#fff;font-size:.9rem;letter-spacing:.04em;position:sticky;top:0}
.spec-table tbody th{text-align:left;background:var(--blue-050);color:var(--blue-950);font-weight:700;width:24%}
.spec-table td{color:var(--ink-soft);font-variant-numeric:tabular-nums}
.spec-table .hl{background:#FFF6EE;font-weight:700;color:var(--blue-950)}
.spec-table thead .hl{background:var(--accent-dark)}
.spec-table tbody tr:last-child th,.spec-table tbody tr:last-child td{border-bottom:0}
.section-dark .table-note,.section-dark p{color:#B9CFE8}
.spec-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}

/* ============ Spare parts ============ */
.part-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;margin-bottom:32px}
.part-grid figure{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s}
.part-grid figure:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.part-grid img{width:100%;height:150px;object-fit:cover}
.part-grid figcaption{padding:10px 12px;font-size:.85rem;font-weight:700;color:var(--ink-soft);text-align:center}
.spare-adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.spare-adv article{background:var(--blue-050);border:1px solid var(--blue-100);border-radius:var(--radius);padding:24px}
.spare-adv strong{color:var(--blue-900);font-size:1rem;display:block;margin-bottom:8px}
.spare-adv p{font-size:.9rem;color:var(--ink-soft)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px}
.faq-list details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .2s}
.faq-list details:hover{box-shadow:var(--shadow-2)}
.faq-list summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-weight:700;color:var(--blue-950);font-size:1rem}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";font-size:1.4rem;font-weight:600;color:var(--accent);transition:transform .25s;flex-shrink:0}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list details p{padding:0 22px 20px;color:var(--ink-soft);font-size:.95rem}

/* ============ Service ============ */
.service-timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-bottom:40px}
.svc-step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s;position:relative}
.svc-step:hover{transform:translateY(-5px);box-shadow:var(--shadow-2)}
.svc-step span{display:inline-flex;width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:800;align-items:center;justify-content:center;margin-bottom:14px}
.svc-step h3{font-size:1rem;margin-bottom:8px}
.svc-step p{font-size:.88rem;color:var(--ink-soft)}
.quote-strip{max-width:820px;margin-inline:auto;text-align:center;padding:clamp(24px,3vw,40px);background:var(--blue-050);border-left:4px solid var(--accent);border-radius:var(--radius)}
.quote-strip blockquote{font-size:clamp(1.05rem,1.8vw,1.3rem);font-weight:600;color:var(--blue-900);font-style:italic;margin-bottom:10px}
.quote-strip cite{font-size:.85rem;color:var(--ink-mute);font-style:normal}

/* ============ Contact ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(30px,4vw,60px);align-items:start}
.contact-copy>p{color:#C6D8EE;margin-bottom:26px;max-width:480px}
.contact-copy h2{margin-bottom:14px}
.contact-list{display:grid;gap:14px;margin-bottom:26px}
.contact-list li{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-sm);padding:14px 18px;transition:background .2s}
.contact-list li:hover{background:rgba(255,255,255,.14)}
.contact-list a{display:block;color:#fff}
.contact-list span{display:block;font-size:.76rem;text-transform:uppercase;letter-spacing:.08em;color:#9FB8D8;margin-bottom:2px}
.contact-list strong{font-size:1rem;color:#fff;font-weight:700}
.contact-badges{display:flex;flex-wrap:wrap;gap:10px}
.contact-badges span{background:rgba(255,122,26,.16);border:1px solid rgba(255,122,26,.4);color:#FFC894;border-radius:999px;padding:7px 16px;font-size:.82rem;font-weight:700}
.inquiry-form{background:#fff;border-radius:var(--radius);padding:clamp(24px,3vw,38px);box-shadow:var(--shadow-3);display:grid;gap:16px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inquiry-form label{display:grid;gap:6px;font-size:.82rem;font-weight:700;color:var(--ink-soft)}
.inquiry-form input,.inquiry-form select,.inquiry-form textarea{border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;font-size:.95rem;font-family:inherit;color:var(--ink);background:var(--bg-alt);transition:border-color .2s,box-shadow .2s;width:100%}
.inquiry-form input:focus,.inquiry-form select:focus,.inquiry-form textarea:focus{outline:0;border-color:var(--blue-500);box-shadow:0 0 0 4px rgba(29,99,207,.12);background:#fff}
.inquiry-form input.invalid,.inquiry-form textarea.invalid{border-color:#D9482B}
.consent{display:flex!important;grid-template-columns:auto 1fr;align-items:center;gap:10px;font-size:.82rem;font-weight:500!important;color:var(--ink-mute)!important}
.consent input{width:16px;height:16px;accent-color:var(--accent)}
.form-status{font-size:.9rem;font-weight:600;color:var(--blue-700);min-height:1.2em}
.form-status.ok{color:#177E4E}
.form-status.err{color:#D9482B}

/* ============ Footer ============ */
.site-footer{background:var(--blue-950);color:#9FB8D8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:clamp(26px,3vw,48px);padding-bottom:44px}
.footer-brand img{height:44px;width:auto;margin-bottom:16px}
.footer-brand p{font-size:.9rem;line-height:1.7}
.footer-col h2{color:#fff;font-size:.95rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px}
.footer-col{display:flex;flex-direction:column;gap:9px}
.footer-col a{color:#9FB8D8;font-size:.9rem;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-contact p{font-size:.85rem;line-height:1.7}
.footer-col .btn{margin-top:10px;align-self:flex-start}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.8rem}

/* ============ Floating ============ */
.whatsapp-float{position:fixed;right:22px;bottom:22px;z-index:120;display:flex;align-items:center;gap:10px;background:#25D366;color:#fff;padding:12px 18px;border-radius:999px;box-shadow:0 12px 30px rgba(37,211,102,.45);font-weight:700;transition:transform .2s,box-shadow .2s}
.whatsapp-float:hover{transform:translateY(-3px) scale(1.03);color:#fff;box-shadow:0 16px 36px rgba(37,211,102,.55)}
.whatsapp-float svg{color:#fff}
.whatsapp-float b{font-size:.9rem}
.back-top{position:fixed;right:22px;bottom:86px;z-index:119;width:46px;height:46px;border-radius:50%;border:0;background:var(--blue-700);color:#fff;font-size:1.2rem;box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transition:opacity .3s,transform .3s}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{transform:translateY(-3px)}

/* ============ Video modal ============ */
.video-modal{position:fixed;inset:0;z-index:200;background:rgba(5,15,30,.86);display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:opacity .25s}
.video-modal.open{opacity:1;pointer-events:auto}
.modal-frame{position:relative;width:min(920px,100%);background:#000;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-3)}
.modal-frame video{width:100%;display:block;max-height:78vh}
.modal-close{position:absolute;top:10px;right:10px;z-index:5;width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.14);color:#fff;font-size:1.5rem;line-height:1}
.modal-close:hover{background:rgba(255,255,255,.3)}
.video-watermark{position:absolute;right:14px;bottom:12px;width:110px;height:auto;opacity:.75;pointer-events:none;filter:drop-shadow(0 2px 6px rgba(0,0,0,.6))}

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

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:1100px){
  .main-nav{display:none;position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);background:var(--blue-950);flex-direction:column;gap:6px;padding:92px 26px 26px;box-shadow:-20px 0 60px rgba(0,0,0,.35);overflow-y:auto}
  .main-nav.open{display:flex}
  .main-nav a{color:#fff;font-size:1.02rem;padding:12px 14px}
  .scrolled .main-nav a{color:#fff}
  .scrolled .main-nav a:hover{background:rgba(255,255,255,.14)}
  .menu-toggle{display:flex}
  .menu-toggle.open span{background:#fff}
  .nav-cta{margin-left:0;z-index:110}
  .nav-shell{justify-content:space-between}

  .section-heading{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .material-grid{grid-template-columns:repeat(3,1fr)}
  .case-grid{grid-template-columns:repeat(3,1fr)}
  .case-card.big{grid-column:span 3}
  .case-card.big img{height:300px}
  .part-grid{grid-template-columns:repeat(4,1fr)}
  .cert-grid{grid-template-columns:repeat(4,1fr)}
  .gallery-4{grid-template-columns:repeat(2,1fr)}
  .service-timeline{grid-template-columns:repeat(3,1fr)}
  .company-grid{grid-template-columns:1fr}
  .tech-grid{grid-template-columns:1fr}
  .definition-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .video-band{grid-template-columns:1fr}
  .hero-facts{grid-template-columns:repeat(4,auto);gap:10px 24px}
}
@media (max-width:760px){
  .hero{min-height:88vh}
  .hero-content{padding:120px 0 80px}
  .hero-facts{grid-template-columns:repeat(2,auto);gap:16px 32px}
  .stat-row{grid-template-columns:repeat(2,1fr)}
  .adv-grid,.material-grid,.case-grid,.service-timeline,.spare-adv{grid-template-columns:1fr}
  .case-card.big{grid-column:span 1}
  .case-card.big img{height:220px}
  .part-grid{grid-template-columns:repeat(2,1fr)}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .gallery-4{grid-template-columns:1fr}
  .gallery-4 img{height:200px}
  .company-visual{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .bar-row{grid-template-columns:110px 1fr 54px;gap:10px}
  .bar-row span{font-size:.8rem}
  .whatsapp-float{right:14px;bottom:14px;padding:12px 14px}
  .whatsapp-float b{display:none}
  .back-top{right:14px;bottom:76px}
  .trust-grid{gap:14px 20px}
  .nav-cta{display:none}
}
@media (max-width:420px){
  .material-grid{grid-template-columns:1fr}
  .part-grid{grid-template-columns:repeat(2,1fr)}
}