/* ============================================
   Zi Yu Group — Main Stylesheet
   โทนสี: ฟ้า / ส้ม / ขาว — ทันสมัย เรียบง่าย
   ============================================ */

:root{
  --navy:#0a2a55;
  --blue:#1463c2;
  --blue-deep:#0d3e7d;
  --blue-light:#eef5fd;
  --orange:#f97316;
  --orange-dark:#e05e00;
  --white:#ffffff;
  --ink:#1c2430;
  --gray:#677182;
  --line:#e6ecf4;
  --radius:20px;
  --shadow:0 20px 50px rgba(10,42,85,.10);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Sarabun',sans-serif;color:var(--ink);background:var(--white);line-height:1.75}
h1,h2,h3,h4{font-family:'Prompt',sans-serif}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 24px}

/* ===== Scroll reveal ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.show{opacity:1;transform:none}

/* ===== Navbar ===== */
header{position:fixed;top:0;left:0;right:0;z-index:100;transition:.3s;background:transparent}
header.scrolled{background:rgba(255,255,255,.96);backdrop-filter:blur(12px);box-shadow:0 2px 18px rgba(10,42,85,.10)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{font-family:'Prompt';font-weight:700;font-size:1.4rem;color:#fff;text-decoration:none;letter-spacing:.5px;transition:.3s;display:inline-flex;align-items:center;gap:10px}
.logo-mark{height:38px;width:auto;background:#fff;border-radius:8px;padding:3px}
.logo span{color:var(--orange)}
header.scrolled .logo{color:var(--navy)}
nav ul{display:flex;gap:34px;list-style:none;align-items:center}
nav a{text-decoration:none;color:rgba(255,255,255,.92);font-family:'Prompt';font-weight:400;font-size:.95rem;transition:color .2s}
header.scrolled nav a{color:var(--ink)}
nav a:hover{color:var(--orange)!important}
.nav-cta{background:var(--orange);color:#fff!important;padding:10px 24px;border-radius:50px;font-weight:500;box-shadow:0 6px 18px rgba(249,115,22,.35)}
.nav-cta:hover{background:var(--orange-dark);color:#fff!important}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.hamburger span{width:26px;height:2.5px;background:#fff;border-radius:2px;transition:.3s}
header.scrolled .hamburger span{background:var(--navy)}

/* ===== Hero ===== */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;
  background:linear-gradient(100deg,rgba(7,28,58,.93) 0%,rgba(10,46,94,.82) 45%,rgba(13,62,125,.45) 100%),
  url('../images/hero.webp') center/cover no-repeat}
.hero .container{padding-top:90px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(249,115,22,.16);border:1px solid rgba(249,115,22,.55);color:#ffb37d;padding:7px 20px;border-radius:50px;font-size:.85rem;font-family:'Prompt';margin-bottom:26px}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--orange)}
.hero h1{font-size:3.2rem;font-weight:600;line-height:1.25;max-width:780px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero p{margin:24px 0 40px;max-width:600px;font-size:1.08rem;color:#cdddf2}
.btn{display:inline-block;font-family:'Prompt';text-decoration:none;border-radius:50px;padding:14px 36px;font-weight:500;transition:.25s}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 10px 26px rgba(249,115,22,.4)}
.btn-orange:hover{background:var(--orange-dark);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.5);color:#fff;margin-left:14px}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.65);font-size:.78rem;font-family:'Prompt';letter-spacing:2px;text-decoration:none}
.hero-scroll::after{content:"";display:block;width:1.5px;height:36px;background:linear-gradient(to bottom,var(--orange),transparent);margin:8px auto 0}

/* ===== Stats ===== */
.stats{background:#fff;margin-top:-58px;position:relative;z-index:5}
.stats-box{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr);padding:40px 20px;border:1px solid var(--line)}
.stat{text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{font-family:'Prompt';font-size:2.3rem;font-weight:700;color:var(--navy);display:block;line-height:1.2}
.stat b i{font-style:normal;color:var(--orange)}
.stat small{color:var(--gray);font-size:.92rem}

/* ===== Sections ===== */
section{padding:100px 0}
.sec-tag{display:inline-flex;align-items:center;gap:10px;font-family:'Prompt';color:var(--orange);font-weight:600;font-size:.88rem;letter-spacing:2.5px;text-transform:uppercase}
.sec-tag::before{content:"";width:34px;height:2px;background:var(--orange)}
.sec-title{font-size:2.3rem;color:var(--navy);font-weight:600;margin:12px 0 18px;letter-spacing:-.5px;line-height:1.3}
.sec-desc{color:var(--gray);max-width:680px;font-size:1.02rem}
.sec-center{text-align:center}
.sec-center .sec-desc{margin:0 auto}
.sec-center .sec-tag::before{display:none}

/* ===== About ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-img{position:relative}
.about-img img{border-radius:var(--radius);box-shadow:var(--shadow);aspect-ratio:4/3.4;object-fit:cover;width:100%}
.about-badge{position:absolute;bottom:-26px;right:-18px;background:var(--navy);color:#fff;border-radius:18px;padding:22px 28px;box-shadow:0 16px 40px rgba(10,42,85,.35)}
.about-badge b{font-family:'Prompt';font-size:1.9rem;color:var(--orange);display:block;line-height:1.2}
.about-badge small{color:#bcd0e8;font-size:.85rem}
.about-points{margin-top:28px;display:grid;gap:16px}
.point{display:flex;gap:16px;align-items:flex-start}
.point .dot{flex:none;width:44px;height:44px;border-radius:12px;background:var(--blue-light);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:1.05rem;font-weight:700;font-family:'Prompt'}
.point h4{color:var(--navy);font-size:1.02rem;font-weight:500}
.point p{color:var(--gray);font-size:.93rem}

/* ===== Services ===== */
.services{background:linear-gradient(180deg,var(--blue-light),#fff)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:54px}
.card{background:#fff;border-radius:var(--radius);padding:36px 30px;border:1px solid var(--line);transition:.3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--orange),var(--blue));opacity:0;transition:.3s}
.card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card .icon{width:58px;height:58px;border-radius:16px;background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:22px}
.card h3{color:var(--navy);font-size:1.12rem;font-weight:500;margin-bottom:10px}
.card p{color:var(--gray);font-size:.93rem}

/* ===== Card link button ===== */
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-family:'Prompt';font-size:.9rem;font-weight:500;color:var(--blue);background:none;border:none;cursor:pointer;padding:0;transition:.2s}
.card-link::after{content:"→";transition:.2s}
.card-link:hover{color:var(--orange)}
.card-link:hover::after{transform:translateX(4px)}

/* ===== Product catalog (tabs) ===== */
.tabs{display:flex;gap:12px;justify-content:center;margin:44px 0 34px;flex-wrap:wrap}
.tab{font-family:'Prompt';font-size:.95rem;font-weight:500;padding:11px 26px;border-radius:50px;border:1.5px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;transition:.25s}
.tab:hover{border-color:var(--blue);color:var(--blue)}
.tab.active{background:var(--navy);border-color:var(--navy);color:#fff}
.tab .count{color:var(--orange);font-weight:600;margin-left:4px}
.catalog{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-item{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;cursor:pointer;transition:.25s}
.cat-item:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#cfe0f5}
.cat-item .img{height:150px;background:#fff;display:flex;align-items:center;justify-content:center;padding:12px}
.cat-item .img img{max-height:100%;width:auto;object-fit:contain}
.cat-item .name{padding:12px 16px 16px;font-size:.86rem;color:var(--ink);border-top:1px solid var(--line);line-height:1.5}
.cat-more{margin:34px auto 0;display:block;background:none;border:1.5px solid var(--blue);color:var(--blue);font-family:'Prompt';font-weight:500;padding:11px 34px;border-radius:50px;cursor:pointer;transition:.25s}
.cat-more:hover{background:var(--blue);color:#fff}

/* ===== Projects ===== */
.projects{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.projects::after{content:"";position:absolute;right:-160px;top:-160px;width:520px;height:520px;border-radius:50%;background:rgba(249,115,22,.08)}
.projects .container{position:relative;z-index:2}
.projects .sec-title{color:#fff}
.projects .sec-desc{color:#b9cce6}
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;margin-top:54px}
.proj{border-radius:var(--radius);overflow:hidden;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);transition:.3s}
.proj:hover{transform:translateY(-6px);background:rgba(255,255,255,.09)}
.proj-img{height:210px;overflow:hidden}
.proj-img img{width:100%;height:100%;object-fit:cover;transition:.5s}
.proj:hover .proj-img img{transform:scale(1.06)}
.proj-body{padding:26px 28px}
.proj h3{font-size:1.08rem;font-weight:500;margin-bottom:8px}
.proj .area{color:var(--orange);font-family:'Prompt';font-weight:600;font-size:.88rem}
.proj p{color:#b9cce6;font-size:.9rem;margin-top:8px}
.proj .card-link{color:#ffb37d}
.proj .card-link:hover{color:#fff}

/* ===== Why us ===== */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:54px}
.why{text-align:center;padding:36px 20px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);transition:.3s}
.why:hover{box-shadow:var(--shadow);transform:translateY(-5px)}
.why .num{font-family:'Prompt';font-weight:700;font-size:2rem;color:var(--orange)}
.why h4{color:var(--navy);font-weight:500;margin:8px 0 6px}
.why p{color:var(--gray);font-size:.88rem}

/* ===== Partners ===== */
.partners{background:#fff}
.partners-img{margin-top:46px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.partners-img img{width:100%}

/* ===== Awards ===== */
.awards{background:var(--blue-light)}
.awards-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-top:46px;align-items:start}
.award-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:0 8px 26px rgba(10,42,85,.07)}
.award-card img{width:100%}
.award-card .cap{padding:14px 20px;font-family:'Prompt';font-size:.92rem;color:var(--navy);border-top:1px solid var(--line)}

/* ===== CTA band ===== */
.cta-band{background:linear-gradient(100deg,var(--blue-deep),var(--blue));border-radius:var(--radius);padding:60px 60px;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;background:rgba(249,115,22,.22)}
.cta-band h3{font-size:1.7rem;font-weight:600;position:relative;z-index:2}
.cta-band p{color:#cdddf2;margin-top:6px;position:relative;z-index:2}
.cta-band .btn{position:relative;z-index:2;flex:none}

/* ===== Contact ===== */
.contact{background:linear-gradient(180deg,#fff,var(--blue-light))}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;margin-top:48px}
.c-item{display:flex;gap:16px;margin-bottom:24px}
.c-item .ic{flex:none;width:48px;height:48px;border-radius:14px;background:#fff;border:1px solid var(--line);box-shadow:0 6px 16px rgba(10,42,85,.08);display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.c-item h4{color:var(--navy);font-size:.97rem;font-weight:500}
.c-item p{color:var(--gray);font-size:.93rem}
.contact-form{background:#fff;border-radius:var(--radius);padding:42px;box-shadow:var(--shadow);border:1px solid var(--line)}
.contact-form h3{color:var(--navy);font-weight:500;margin-bottom:22px;font-size:1.2rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form input,.contact-form textarea{width:100%;border:1px solid #d9e2ef;border-radius:12px;padding:13px 17px;margin-bottom:14px;font-family:'Sarabun';font-size:.95rem;outline:none;transition:.2s;background:#fbfcfe}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(20,99,194,.1)}
.contact-form button{width:100%;background:var(--orange);color:#fff;border:none;border-radius:50px;padding:14px;font-family:'Prompt';font-weight:500;font-size:1rem;cursor:pointer;transition:.2s;box-shadow:0 10px 24px rgba(249,115,22,.35)}
.contact-form button:hover{background:var(--orange-dark);transform:translateY(-2px)}

/* ===== Footer ===== */
footer{background:#071c3a;color:#92a9c9;padding:60px 0 30px}
.f-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:50px;margin-bottom:40px}
footer .logo{color:#fff;display:inline-flex;margin-bottom:14px}
footer h4{color:#fff;font-weight:500;font-size:1rem;margin-bottom:16px}
footer ul{list-style:none}
footer ul li{margin-bottom:9px}
footer a{color:#92a9c9;text-decoration:none;font-size:.92rem;transition:.2s}
footer a:hover{color:var(--orange)}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:.85rem}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(7,28,58,.72);backdrop-filter:blur(4px);z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:22px;max-width:860px;width:100%;max-height:88vh;overflow-y:auto;position:relative;animation:pop .3s ease}
@keyframes pop{from{opacity:0;transform:translateY(24px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{position:sticky;top:14px;margin-left:auto;margin-right:14px;display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--navy);color:#fff;border:none;font-size:1.1rem;cursor:pointer;z-index:5;float:right;transition:.2s}
.modal-close:hover{background:var(--orange)}
.modal-body{padding:10px 38px 38px}
.modal-body h3{color:var(--navy);font-size:1.45rem;font-weight:600;margin-bottom:6px}
.modal-body .m-tag{color:var(--orange);font-family:'Prompt';font-weight:600;font-size:.88rem}
.modal-body p{color:var(--gray);margin:14px 0}
.m-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0}
.m-gallery img{border-radius:14px;width:100%;height:220px;object-fit:cover;cursor:pointer;transition:.25s}
.m-gallery img:hover{transform:scale(1.02)}
.m-gallery img.wide{grid-column:1/-1;height:300px}
.m-specs{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}
.m-spec{background:var(--blue-light);border-radius:12px;padding:14px 18px}
.m-spec b{font-family:'Prompt';color:var(--navy);font-size:.95rem;display:block}
.m-spec small{color:var(--gray);font-size:.84rem}

/* ===== Lightbox ===== */
.lightbox{position:fixed;inset:0;background:rgba(7,28,58,.88);z-index:300;display:none;align-items:center;justify-content:center;padding:30px;flex-direction:column;gap:16px}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:78vh;border-radius:14px;background:#fff}
.lightbox .lb-cap{color:#fff;font-family:'Prompt';font-size:1rem;text-align:center}
.lightbox .lb-close{position:absolute;top:22px;right:26px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;border:none;font-size:1.2rem;cursor:pointer}
.lightbox .lb-close:hover{background:var(--orange)}

/* ===== Leadership ===== */
.leader{background:#fff}
.leader-card{display:block;margin-top:50px;background:linear-gradient(100deg,var(--navy),var(--blue-deep));border-radius:var(--radius);padding:50px 56px;color:#fff;box-shadow:var(--shadow);position:relative;overflow:hidden}
.leader-card::after{content:"";position:absolute;right:-90px;bottom:-90px;width:320px;height:320px;border-radius:50%;background:rgba(249,115,22,.12)}
.leader-mono{flex:none;width:128px;height:128px;border-radius:50%;background:linear-gradient(135deg,var(--orange),var(--orange-dark));display:flex;align-items:center;justify-content:center;font-family:'Prompt';font-weight:700;font-size:2.4rem;color:#fff;box-shadow:0 14px 36px rgba(249,115,22,.4);position:relative;z-index:2}
.leader-info{position:relative;z-index:2}
.leader-info h3{font-size:1.6rem;font-weight:600}
.leader-role{color:var(--orange);font-family:'Prompt';font-weight:600;font-size:.95rem}
.leader-quote{color:#dce8f7;font-size:1.05rem;margin:14px 0 20px;font-style:italic;max-width:620px}
.leader-pos{display:flex;flex-wrap:wrap;gap:10px}
.leader-pos span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:50px;padding:7px 16px;font-size:.84rem;color:#cdddf2}
.leader-vision{color:#cdddf2;font-size:.97rem;line-height:1.65;max-width:640px;margin-top:6px;padding-left:16px;border-left:3px solid var(--orange)}
.c-addr a{color:var(--blue);text-decoration:none}
.c-addr a:hover{text-decoration:underline}

/* ===== Group structure ===== */
.group{background:linear-gradient(180deg,#fff,var(--blue-light))}
.group-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:54px}
.gco{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;transition:.3s;position:relative;overflow:hidden}
.gco:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#cfe0f5}
.gco-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.gco-year{font-family:'Prompt';font-weight:700;font-size:1.5rem;color:var(--blue)}
.gco-flag{font-family:'Prompt';font-size:.76rem;font-weight:600;letter-spacing:1px;padding:5px 13px;border-radius:50px}
.gco-flag.cn{background:var(--blue-light);color:var(--blue)}
.gco-flag.th{background:#fff1e6;color:var(--orange-dark)}
.gco h4{color:var(--navy);font-size:1.02rem;font-weight:500;line-height:1.4;margin-bottom:8px}
.gco p{color:var(--gray);font-size:.9rem}
.gco-loc{display:block;color:var(--blue);font-size:.82rem;font-family:'Prompt';margin-top:10px}
.gco-loc::before{content:"📍 "}

/* ===== New energy ===== */
.energy{background:var(--navy);color:#fff;position:relative;overflow:hidden}
.energy::before{content:"";position:absolute;left:-160px;bottom:-160px;width:520px;height:520px;border-radius:50%;background:rgba(20,99,194,.25)}
.energy .container{position:relative;z-index:2}
.energy .sec-title{color:#fff}
.energy .sec-desc{color:#b9cce6}
.energy-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:54px}
.ecard{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:32px 26px;transition:.3s}
.ecard:hover{transform:translateY(-6px);background:rgba(255,255,255,.09)}
.ecard .ico{font-size:1.9rem;margin-bottom:16px}
.ecard h4{font-size:1.06rem;font-weight:500;margin-bottom:8px}
.ecard p{color:#b9cce6;font-size:.9rem}
.ecard .with{display:inline-block;margin-top:14px;color:var(--orange);font-family:'Prompt';font-weight:600;font-size:.82rem}

/* ===== Clients showcase ===== */
.clients-featured{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin:46px 0 30px}
.cbig{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 14px;text-align:center;font-family:'Prompt';font-weight:700;font-size:1.15rem;color:var(--navy);box-shadow:0 8px 24px rgba(10,42,85,.06);transition:.25s;display:flex;align-items:center;justify-content:center;min-height:92px}
.cbig:hover{transform:translateY(-4px);box-shadow:var(--shadow);color:var(--blue)}
.clients-chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;max-width:960px;margin:0 auto 10px}
.clients-chips span{background:var(--blue-light);border:1px solid var(--line);color:var(--navy);border-radius:50px;padding:8px 18px;font-size:.86rem;transition:.2s}
.clients-chips span:hover{background:var(--orange);color:#fff;border-color:var(--orange)}
.clients-note{text-align:center;color:var(--gray);font-size:.92rem;margin-top:18px}

/* ===== Responsive ===== */
@media(max-width:900px){
  .leader-card{grid-template-columns:1fr;text-align:center;padding:40px 26px;gap:24px}
  .leader-mono{margin:0 auto}
  .leader-quote{margin-left:auto;margin-right:auto}
  .leader-pos{justify-content:center}
  .group-grid{grid-template-columns:1fr}
  .energy-grid{grid-template-columns:repeat(2,1fr)}
  .clients-featured{grid-template-columns:repeat(2,1fr)}
  nav ul{position:fixed;top:78px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 0;box-shadow:0 14px 30px rgba(10,42,85,.12);display:none}
  nav ul.open{display:flex}
  nav ul li{width:100%;text-align:center}
  nav ul a{display:block;padding:14px;color:var(--ink)!important}
  .nav-cta{border-radius:0;box-shadow:none}
  .hamburger{display:flex}
  .hero h1{font-size:2.15rem}
  .hero{min-height:80vh}
  .stats-box{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .stat:nth-child(2){border-right:none}
  .about-grid,.contact-grid,.proj-grid{grid-template-columns:1fr}
  .about-badge{right:8px}
  .cards{grid-template-columns:1fr}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .cta-band{flex-direction:column;text-align:center;padding:44px 28px}
  .f-grid{grid-template-columns:1fr}
  section{padding:72px 0}
  .catalog{grid-template-columns:repeat(2,1fr)}
  .awards-grid,.m-gallery,.m-specs{grid-template-columns:1fr}
  .modal-body{padding:10px 22px 28px}
}

/* ===== Language switcher ===== */
.nav-right{display:flex;align-items:center;gap:22px}
.lang-switch{display:flex;gap:5px;align-items:center}
.lang-btn{background:none;border:1px solid rgba(255,255,255,.4);color:rgba(255,255,255,.85);font-family:'Prompt';font-weight:500;font-size:.78rem;padding:5px 11px;border-radius:50px;cursor:pointer;transition:.2s;line-height:1}
.lang-btn:hover{border-color:var(--orange);color:#fff}
.lang-btn.active{background:var(--orange);border-color:var(--orange);color:#fff}
header.scrolled .lang-btn{border-color:#d2ddec;color:var(--gray)}
header.scrolled .lang-btn:hover{color:var(--orange);border-color:var(--orange)}
header.scrolled .lang-btn.active{background:var(--orange);border-color:var(--orange);color:#fff}

/* ===== Chinese font ===== */
body.lang-zh{font-family:'Noto Sans SC',sans-serif}
body.lang-zh h1,body.lang-zh h2,body.lang-zh h3,body.lang-zh h4,body.lang-zh .logo,body.lang-zh .sec-tag,body.lang-zh .btn,body.lang-zh .lang-btn{font-family:'Noto Sans SC',sans-serif}

@media(max-width:900px){
  .nav-right{gap:12px}
  .lang-btn{padding:5px 9px;font-size:.74rem}
}