/* =========================================================
   Луоян Аньхэ — Монгол хэлний тусдаа вэбсайт — нийтлэг загвар
   Дизайн: DeskCraft / Шинжээ үзүүлэлт
   Гадаад хамаарлыг бүрэн хассан · системийн фонт · доторх SVG
   Өнгө: үйлдвэрийн цэнхэр #1F4E79 / аюулгүйн улбар шар #E8742A / гүн суурь #0F1B2D
   ========================================================= */
:root{
  --blue:#1F4E79;
  --blue-dark:#163A5C;
  --blue-light:#2E6BA8;
  --orange:#E8742A;
  --orange-dark:#C75E1C;
  --ink:#0F1B2D;
  --paper:#FFFFFF;
  --mist:#F5F7FA;
  --line:#E2E8F0;
  --muted:#5B6B7E;
  --ok:#2E8B57;
  --radius:10px;
  --shadow:0 6px 22px rgba(15,27,45,.10);
  --shadow-lg:0 14px 40px rgba(15,27,45,.16);
  --maxw:1200px;
  --font:"Segoe UI",Roboto,"Noto Sans","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--mist);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--orange)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Дээд хэсэг: хэл / холбоо барих ---------- */
.topbar{background:var(--ink);color:#cdd8e6;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#cdd8e6}
.topbar .lang a{padding:0 8px;border-right:1px solid #2a3b52}
.topbar .lang a:last-child{border:none}
.topbar .lang a.active{color:var(--orange);font-weight:700}

/* ---------- Цэс ---------- */
header.nav{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(15,27,45,.05)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--blue);font-size:18px}
.brand .logo{width:38px;height:38px}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.5px}
.nav nav{display:flex;gap:6px}
.nav nav a{padding:10px 14px;border-radius:8px;color:var(--ink);font-weight:600;font-size:15px}
.nav nav a:hover{background:var(--mist);color:var(--blue)}
.nav nav a.active{background:var(--blue);color:#fff}
.nav .menu-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;cursor:pointer}

/* ---------- Ерөнхий хэсэг ---------- */
section{padding:64px 0}
.sec-head{text-align:center;max-width:760px;margin:0 auto 40px}
.sec-head .kicker{color:var(--orange);font-weight:800;letter-spacing:2px;text-transform:uppercase;font-size:13px}
.sec-head h2{font-size:34px;color:var(--blue);margin:8px 0 12px;line-height:1.25}
.sec-head p{color:var(--muted);font-size:16px}
.bg-white{background:var(--paper)}
.bg-mist{background:var(--mist)}
.bg-ink{background:var(--ink);color:#e8eef6}
.bg-ink .sec-head h2{color:#fff}
.bg-ink .sec-head p{color:#aab9cc}

/* ---------- Товч ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:50px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:.18s}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(232,116,42,.35)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px)}
.btn-ghost{background:transparent;border:2px solid var(--blue);color:var(--blue)}
.btn-ghost:hover{background:var(--blue);color:#fff}
.btn-light{background:#fff;color:var(--blue)}
.btn-light:hover{background:var(--mist)}

/* ---------- Hero ---------- */
.hero{position:relative;background:linear-gradient(135deg,var(--blue-dark),var(--ink));color:#fff;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:80px 20px}
.hero .badge{display:inline-flex;align-items:center;gap:8px;background:rgba(232,116,42,.18);color:var(--orange);padding:7px 16px;border-radius:50px;font-weight:700;font-size:13px;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.18;margin-bottom:18px}
.hero h1 span{color:var(--orange)}
.hero p.lead{font-size:18px;color:#cdd8e6;margin-bottom:28px}
.hero .hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-stats .st{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:14px 20px;min-width:140px}
.hero-stats .st b{display:block;font-size:26px;color:#fff}
.hero-stats .st span{font-size:13px;color:#9fb0c6}
.hero-art{display:flex;justify-content:center}
.hero-art svg{width:100%;max-width:420px;filter:drop-shadow(0 20px 40px rgba(0,0,0,.4))}
.hero-art .photo{width:100%;max-width:480px;height:auto;border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.45);border:1px solid rgba(255,255,255,.14)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery figure{margin:0;position:relative;border-radius:14px;overflow:hidden;box-shadow:0 12px 32px rgba(15,27,45,.18)}
.gallery img{width:100%;height:230px;object-fit:cover;transition:transform .4s}
.gallery figure:hover img{transform:scale(1.05)}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(15,27,45,.88));color:#fff;padding:28px 14px 12px;font-size:14px;font-weight:600}
@media(max-width:860px){.gallery{grid-template-columns:1fr}.gallery img{height:250px}}

/* ---------- Өнөөдрийн ажил ---------- */
.focus{background:var(--paper);border-top:4px solid var(--orange)}
.focus .wrap{display:grid;grid-template-columns:300px 1fr;gap:30px;align-items:start}
.focus .ftitle{background:var(--ink);color:#fff;border-radius:var(--radius);padding:22px}
.focus .ftitle h3{font-size:20px;display:flex;align-items:center;gap:10px}
.focus .ftitle p{font-size:13px;color:#9fb0c6;margin-top:8px}
.task-list{display:flex;flex-direction:column;gap:12px}
.task{display:flex;align-items:center;gap:14px;background:var(--mist);border:1px solid var(--line);border-radius:10px;padding:14px 18px;font-weight:600}
.task .dot{width:12px;height:12px;border-radius:50%;flex:none}
.task .dot.ok{background:var(--ok)}
.task .dot.wait{background:var(--orange);animation:pulse 1.4s infinite}
.task .meta{margin-left:auto;font-size:12px;color:var(--muted);font-weight:500}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* ---------- Гурван үйлчилгээний карт ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:30px;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--blue-light)}
.card .ic{width:56px;height:56px;background:var(--mist);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card .ic svg{width:30px;height:30px}
.card h3{font-size:21px;color:var(--blue);margin-bottom:10px}
.card p{color:var(--muted);font-size:15px;flex:1}
.card .tags{margin:16px 0;display:flex;flex-wrap:wrap;gap:6px}
.card .tags span{background:var(--mist);color:var(--blue);font-size:12px;padding:4px 10px;border-radius:20px;font-weight:600}
.card .more{margin-top:auto;font-weight:700;color:var(--orange);display:inline-flex;align-items:center;gap:6px}

/* ---------- Техникийн хүснэгт ---------- */
.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.spec-table thead th{background:var(--blue);color:#fff;font-weight:700}
.spec-table tbody tr:nth-child(even){background:var(--mist)}
.spec-table tbody tr:hover{background:#eef4fb}
.spec-table td .yes{color:var(--ok);font-weight:700}
.spec-table td .no{color:#b03a3a;font-weight:700}

/* ---------- Урсгал зураг (SVG) ---------- */
.flow{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:16px;margin-top:30px}
.flow .step{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;text-align:center;position:relative}
.flow .step .num{width:34px;height:34px;background:var(--orange);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;margin:0 auto 12px}
.flow .step h4{font-size:15px;color:var(--blue)}
.flow .step p{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- Өгөгдлийн самбар ---------- */
.bars{display:flex;flex-direction:column;gap:18px;margin-top:24px}
.bar-row{display:grid;grid-template-columns:200px 1fr 70px;align-items:center;gap:14px}
.bar-row .lab{font-weight:600;color:var(--ink)}
.bar-track{background:var(--mist);border-radius:50px;height:16px;overflow:hidden}
.bar-fill{height:100%;background:linear-gradient(90deg,var(--blue),var(--blue-light));border-radius:50px}
.bar-fill.orange{background:linear-gradient(90deg,var(--orange),var(--orange-dark))}
.bar-row .val{font-weight:800;color:var(--blue);text-align:right}

/* ---------- Зөвшөөрөл / итгэл ---------- */
.trust{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;text-align:center}
.trust .item{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:24px}
.trust .item svg{width:42px;height:42px;margin:0 auto 12px}
.trust .item b{display:block;font-size:18px;color:var(--blue)}
.trust .item span{font-size:13px;color:var(--muted)}

/* ---------- Хөвөн CTA ---------- */
.float-cta{position:fixed;left:0;right:0;bottom:0;background:var(--blue);color:#fff;z-index:60;box-shadow:0 -6px 24px rgba(15,27,45,.25);display:flex;align-items:center;justify-content:space-between;padding:12px 20px;gap:14px}
.float-cta .txt{font-weight:700;font-size:15px}
.float-cta .txt small{display:block;font-weight:400;font-size:12px;color:#bcd0e8}
.float-cta .acts{display:flex;gap:10px}
.float-cta .btn-light{padding:10px 20px;font-size:14px}
.float-cta .btn-primary{padding:10px 20px;font-size:14px}

/* ---------- Маягт ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-weight:600;font-size:14px;color:var(--ink)}
.field input,.field select,.field textarea{padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:15px;background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,78,121,.12)}
.form-note{font-size:13px;color:var(--muted);margin-top:6px}
.form-ok{background:#e8f6ee;border:1px solid var(--ok);color:#1d6b41;padding:14px 18px;border-radius:10px;font-weight:600;margin-top:16px;display:none}
.contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:20px}
.contact-cards .c{background:var(--mist);border:1px solid var(--line);border-radius:12px;padding:18px}
.contact-cards .c b{display:flex;align-items:center;gap:8px;color:var(--blue);font-size:15px}
.contact-cards .c a{font-size:16px;font-weight:700;color:var(--ink)}

/* ---------- Хөл хэсэг ---------- */
footer{background:var(--ink);color:#9fb0c6;padding:48px 0 24px;font-size:14px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer a{color:#9fb0c6;display:block;padding:4px 0}
footer a:hover{color:var(--orange)}
footer .brand-foot{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:12px}
footer .copy{border-top:1px solid #223247;margin-top:32px;padding-top:18px;text-align:center;color:#6c7e95;font-size:13px}

/* ---------- Хариулттай загвар ---------- */
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;padding:56px 20px}
  .hero h1{font-size:34px}
  .hero-art{order:-1}
  .focus .wrap{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .nav nav{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 20px;border-bottom:1px solid var(--line);display:none}
  .nav nav.open{display:flex}
  .nav .menu-btn{display:block}
  .bar-row{grid-template-columns:120px 1fr 56px}
  footer .cols{grid-template-columns:1fr 1fr}
  .float-cta .txt small{display:none}
}
@media(max-width:560px){
  .hero-stats{gap:14px}
  .hero-stats .st{min-width:120px;flex:1}
  .sec-head h2{font-size:26px}
  .float-cta{flex-direction:column;align-items:stretch;text-align:center}
  .float-cta .acts{justify-content:center}
}

/* ---------- ISO 9001 spotlight ---------- */
.cert-spot{background:var(--paper);border-top:4px solid var(--orange)}
.cert-card{display:grid;grid-template-columns:320px 1fr;gap:36px;align-items:center;background:linear-gradient(135deg,var(--blue-dark),var(--ink));border-radius:16px;padding:34px;box-shadow:var(--shadow-lg);color:#fff}
.cert-card .ph{position:relative;border-radius:12px;overflow:hidden;border:6px solid #fff;box-shadow:0 14px 34px rgba(0,0,0,.4)}
.cert-card .ph img{display:block;width:100%;height:auto}
.cert-card .seal{position:absolute;bottom:10px;right:10px;background:var(--orange);color:#fff;font-weight:800;font-size:12px;padding:6px 12px;border-radius:50px;box-shadow:0 4px 12px rgba(0,0,0,.3)}
.cert-card .kicker{color:var(--orange);font-weight:800;letter-spacing:2px;text-transform:uppercase;font-size:13px}
.cert-card h2{color:#fff;margin:8px 0 14px;font-size:30px;line-height:1.2}
.cert-card h2 span{color:var(--orange)}
.cert-card ul{list-style:none;margin:0 0 20px;padding:0}
.cert-card li{display:flex;gap:10px;align-items:flex-start;margin:9px 0;color:#dbe6f2;font-size:15px;font-weight:500}
.cert-card li svg{flex:0 0 auto;margin-top:3px}
@media(max-width:860px){.cert-card{grid-template-columns:1fr;padding:22px}.cert-card h2{font-size:24px}}

/* ---------- Hero product showcase (cylinder) ---------- */
.hero-art .product{position:relative;display:inline-flex;flex-direction:column;align-items:center}
.hero-art .product .cyl{width:320px;max-width:72vw;height:auto;filter:drop-shadow(0 26px 44px rgba(0,0,0,.5))}
.hero-art .product::after{content:"";width:74%;height:24px;border-radius:50%;background:radial-gradient(ellipse at center,rgba(0,0,0,.5),transparent 70%);margin-top:-16px}
.hero-float{position:absolute;background:rgba(15,27,45,.55);border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);color:#fff;border-radius:12px;padding:10px 14px;line-height:1.25;box-shadow:0 12px 28px rgba(0,0,0,.35);font-size:13px;font-weight:600}
.hero-float b{display:block;font-size:19px;color:#F5A623}
.hero-float.f1{top:6%;right:-6%}
.hero-float.f2{bottom:18%;left:-9%}
@media(max-width:860px){.hero-art .product .cyl{width:250px}.hero-float{font-size:12px;padding:8px 11px}.hero-float b{font-size:16px}}

/* ---------- Line sales / calculator ---------- */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.calc .box{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.calc h3{margin:0 0 6px;font-size:19px}
.calc .hint{font-size:13px;color:#5b6b80;margin:0 0 16px}
.calc input[type=number]{width:100%;padding:14px 16px;border:2px solid var(--line);border-radius:10px;font-family:inherit;font-size:22px;font-weight:800;color:var(--ink);outline:none}
.calc input[type=number]:focus{border-color:var(--orange)}
.calc .presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.calc .presets button{background:var(--mist);border:1px solid var(--line);border-radius:50px;padding:7px 14px;font-size:13px;font-weight:700;color:var(--ink);cursor:pointer}
.calc .presets button:hover{border-color:var(--orange);color:var(--orange)}
.calc .res{margin-top:18px;background:linear-gradient(135deg,var(--blue-dark),var(--ink));color:#fff;border-radius:12px;padding:18px 20px}
.calc .res small{color:#b9c8da;font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase}
.calc .res b{display:block;font-size:30px;color:#F5A623;margin:4px 0 2px;line-height:1.1}
.calc .res span{font-size:14px;color:#dbe6f2}
.calc-note{background:rgba(232,116,42,.08);border:1px solid rgba(232,116,42,.35);border-radius:10px;padding:12px 16px;font-size:13px;color:#8a4a20;margin-top:18px}
.tier{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.tier button{background:#fff;border:2px solid var(--line);border-radius:10px;padding:12px 18px;font-size:14px;font-weight:700;color:var(--ink);cursor:pointer;font-family:inherit}
.tier button small{display:block;font-weight:600;color:#5b6b80;font-size:12px;margin-top:2px}
.tier button.on{border-color:var(--orange);background:rgba(232,116,42,.08);box-shadow:0 4px 14px rgba(232,116,42,.18)}
.tier button.on small{color:var(--orange-dark)}
.line-art img{width:100%;border-radius:16px;box-shadow:var(--shadow-lg);border:1px solid var(--line);display:block}
.line-art figcaption{margin-top:10px;text-align:center;font-size:13px;color:#5b6b80;font-weight:600}
.hero .hero-art .wide{width:100%;max-width:560px;border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.14)}
@media(max-width:860px){.calc{grid-template-columns:1fr}}
@media(max-width:1100px){.hero .wrap[style*="0.8fr 1.2fr"]{grid-template-columns:1fr !important}.hero-art img.banner{max-width:100%}}
.line-art svg{width:100%;height:auto;display:block;border-radius:16px;box-shadow:var(--shadow-lg)}
.hero .hero-art .wide{filter:brightness(.88) saturate(1.08) contrast(1.04)}
.hero .hero-art img.vimg{width:360px;max-width:80vw;height:auto;display:block;border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.14);filter:brightness(.92) saturate(1.08)}

/* ---------- line hero stage ---------- */
.hero-stage{position:relative;margin:40px auto 0;max-width:1040px;padding-bottom:26px}
.hero-stage::before{content:"";position:absolute;left:8%;right:8%;bottom:0;height:70px;background:radial-gradient(ellipse at center,rgba(232,116,42,.38),transparent 70%);filter:blur(6px)}
.hero-stage .frame{position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.22);box-shadow:0 40px 90px rgba(0,0,0,.55);transform:perspective(1400px) rotateX(5deg);transform-origin:center bottom;animation:stageIn 1s ease-out both,stageFloat 7s ease-in-out 1.2s infinite}
.hero-stage img{width:100%;height:auto;display:block}
.hero-stage .frame::after{content:"";position:absolute;top:0;bottom:0;width:34%;left:-50%;background:linear-gradient(105deg,transparent,rgba(255,255,255,.16),transparent);transform:skewX(-12deg);animation:shine 6.5s ease-in-out 2s infinite;pointer-events:none}
@keyframes stageIn{from{opacity:0;transform:perspective(1400px) rotateX(16deg) translateY(46px)}to{opacity:1;transform:perspective(1400px) rotateX(5deg) translateY(0)}}
@keyframes stageFloat{0%,100%{transform:perspective(1400px) rotateX(5deg) translateY(0)}50%{transform:perspective(1400px) rotateX(5deg) translateY(-12px)}}
@keyframes shine{0%{left:-50%}45%,100%{left:130%}}
@media(prefers-reduced-motion:reduce){.hero-stage .frame{animation:none}.hero-stage .frame::after{display:none}}
@media(max-width:860px){.hero-stage{margin-top:28px}.hero-stage .frame{border-radius:12px}}

/* ---------- product gallery (full display) ---------- */
.gallery.prod{gap:22px}
.gallery.prod figure{background:#fff;border:1px solid var(--line)}
.gallery.prod img{height:300px;object-fit:contain;background:#fff;transform:none}
.gallery.prod figure:hover img{transform:none}
.gallery.prod figcaption{position:static;background:var(--mist);color:var(--ink);padding:10px 14px;font-size:13.5px;text-align:center;border-top:1px solid var(--line)}
@media(max-width:860px){.gallery.prod img{height:240px}}