/* ==========================================================================
   ช่างชาตรี รั้วเหล็ก — ผู้รับเหมารั้วเหล็กครบวงจร
   Professional Contractor — navy + white + gray, red CTA, LINE green
   ========================================================================== */

:root{
  --navy-950:#081A33;
  --navy-900:#0B2447;
  --navy-800:#123164;
  --navy-700:#1B4384;
  --navy-600:#2A5AA8;
  --gray-900:#1F2937;
  --gray-700:#3F4A5A;
  --gray-500:#6B7686;
  --gray-300:#CBD3DD;
  --gray-100:#F2F4F7;
  --gray-50:#F8F9FB;
  --white:#FFFFFF;
  --ink:#1B2430;
  --ink-soft:#586170;
  --steel:#8C97A6;
  --red:#E63946;
  --red-dark:#C62839;
  --line-green:#06C755;
  --line-green-dark:#04A649;
  --accent:#F0A93A;
  --radius:8px;
  --radius-lg:14px;
  --shadow-lg:0 20px 44px rgba(11,36,71,.16);
  --shadow-sm:0 4px 14px rgba(11,36,71,.09);
  --maxw:1180px;
  --font-display:'Kanit',sans-serif;
  --font-body:'Noto Sans Thai',sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--navy-900);line-height:1.28;margin:0 0 .5em;}
h1{font-weight:800;}
h2{font-weight:700;}
h3{font-weight:600;}
p{margin:0 0 1em;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
:focus-visible{outline:3px solid var(--red);outline-offset:2px;}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}}

/* ---------- blueprint grid texture (engineering motif) ---------- */
.blueprint-bg{
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 40px);
}
.corner-mark{position:relative;}
.corner-mark::before,.corner-mark::after{
  content:"";position:absolute;width:14px;height:14px;border-color:var(--accent);border-style:solid;
}
.corner-mark::before{top:-2px;left:-2px;border-width:2px 0 0 2px;}
.corner-mark::after{bottom:-2px;right:-2px;border-width:0 2px 2px 0;}

/* ---------- top utility bar ---------- */
.topbar{background:var(--navy-950);color:var(--gray-300);font-size:.85rem;}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding:6px 20px;flex-wrap:wrap;gap:6px;}
.topbar a{color:var(--gray-300);}
.topbar .tb-phone{font-weight:700;letter-spacing:.03em;color:var(--accent);}
.topbar .tb-phone::before{content:"☎ ";}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--white);border-bottom:3px solid var(--navy-900);box-shadow:var(--shadow-sm);}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;gap:16px;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand img{height:52px;width:auto;flex-shrink:0;border-radius:6px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-family:var(--font-display);font-size:1.1rem;color:var(--navy-900);font-weight:800;}
.brand-text span{font-size:.72rem;color:var(--ink-soft);letter-spacing:.02em;}
.brand-text strong span{font-size:inherit;color:inherit;letter-spacing:normal;}
.brand-short{display:none;}
@media (max-width:480px){.brand-full{display:none;}.brand-short{display:inline;}}

nav.main-nav{display:flex;align-items:center;gap:22px;}
nav.main-nav a{font-weight:600;font-size:.92rem;color:var(--gray-900);position:relative;padding:6px 2px;}
nav.main-nav a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--red);transition:width .2s;}
nav.main-nav a:hover::after,nav.main-nav a:focus-visible::after{width:100%;}

.header-cta{display:flex;align-items:center;gap:8px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-display);font-weight:600;font-size:.92rem;padding:10px 20px;border-radius:var(--radius);border:2px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;white-space:nowrap;}
.btn:hover{transform:translateY(-2px);}
.btn-call{background:var(--red);color:#fff;box-shadow:0 6px 16px rgba(230,57,70,.32);}
.btn-call:hover{background:var(--red-dark);}
.btn-line{background:var(--line-green);color:#fff;box-shadow:0 6px 16px rgba(6,199,85,.32);}
.btn-line:hover{background:var(--line-green-dark);}
.btn-navy{background:var(--navy-900);color:#fff;}
.btn-navy:hover{background:var(--navy-700);}
.btn-outline{background:transparent;border-color:var(--navy-700);color:var(--navy-800);}
.btn-outline:hover{background:var(--navy-700);color:#fff;}
.btn-sm{padding:8px 15px;font-size:.82rem;}
.btn-lg{padding:15px 28px;font-size:1rem;}

.nav-toggle{display:none;background:none;border:2px solid var(--navy-700);border-radius:var(--radius);width:42px;height:42px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--navy-800);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,var(--navy-950) 0%,var(--navy-900) 55%,var(--navy-700) 130%);color:#fff;padding:52px 0 90px;}
.hero .blueprint-bg{position:absolute;inset:0;}
.hero-inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(240,169,58,.14);border:1px solid rgba(240,169,58,.4);padding:6px 14px;border-radius:4px;font-size:.78rem;letter-spacing:.05em;margin-bottom:16px;color:var(--accent);font-weight:600;}
.eyebrow::before{content:"■";font-size:.6em;}
.hero h1{color:#fff;font-size:clamp(1.9rem,4vw,2.9rem);margin-bottom:.4em;}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{font-size:1.02rem;color:var(--gray-300);max-width:56ch;margin-bottom:1.5em;}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px;}
.hero-phone{display:inline-flex;align-items:center;gap:10px;color:#fff;font-family:var(--font-display);font-size:1.25rem;font-weight:700;letter-spacing:.02em;}
.hero-phone small{display:block;font-family:var(--font-body);font-weight:400;font-size:.7rem;color:var(--steel);}
.hero-stats{display:flex;gap:22px;margin-top:10px;flex-wrap:wrap;}
.hero-stats div{border-left:3px solid var(--accent);padding-left:11px;}
.hero-stats b{display:block;font-family:var(--font-display);font-size:1.35rem;color:var(--accent);}
.hero-stats span{font-size:.75rem;color:var(--steel);}

/* signature: certification / quality seal badge */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:250px;}
.seal{position:relative;width:210px;height:210px;display:flex;align-items:center;justify-content:center;animation:sealfloat 6s ease-in-out infinite;}
.seal-outer{
  position:absolute;inset:0;border-radius:50%;
  background:linear-gradient(160deg,var(--navy-800),var(--navy-950));
  box-shadow:var(--shadow-lg),inset 0 0 0 2px rgba(240,169,58,.4);
}
.seal-outer::before{content:"";position:absolute;inset:10px;border-radius:50%;border:2px dashed rgba(240,169,58,.5);}
.seal-inner{position:relative;width:154px;height:154px;margin:28px auto;border-radius:50%;background:var(--navy-950);border:3px solid var(--accent);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;font-family:var(--font-display);padding:10px;}
.seal-inner .ic{font-size:1.7rem;margin-bottom:2px;}
.seal-inner .big{font-size:1.3rem;font-weight:800;color:var(--accent);line-height:1;}
.seal-inner .mid{font-size:.74rem;font-weight:700;color:#fff;margin-top:6px;}
.seal-inner .small{font-size:.58rem;color:var(--steel);margin-top:2px;letter-spacing:.04em;}
@keyframes sealfloat{0%,100%{transform:translateY(0) rotate(-2deg);}50%{transform:translateY(-8px) rotate(1deg);}}

.hero-wave{position:absolute;left:0;right:0;bottom:-1px;line-height:0;}

/* ---------- section shell ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--gray-100);}
.section-dark{background:var(--navy-950);color:var(--gray-300);}
.section-dark h2{color:#fff;}
.section-head{max-width:680px;margin:0 auto 40px;text-align:center;}
.section-head .kicker{display:inline-block;font-family:var(--font-display);font-size:.78rem;letter-spacing:.1em;color:var(--red);font-weight:700;margin-bottom:8px;text-transform:uppercase;}
.section-head h2{font-size:clamp(1.4rem,2.8vw,2rem);}
.section-head p{color:var(--ink-soft);}
.section-dark .section-head p{color:var(--steel);}

/* ---------- grid & cards ---------- */
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-5{grid-template-columns:repeat(5,1fr);}

.card{background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-lg);padding:24px 20px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s;position:relative;overflow:hidden;}
.card::before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--navy-700);}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--navy-700);}
.card:hover::before{background:var(--red);}
.card .icon{width:50px;height:50px;border-radius:8px;background:var(--gray-100);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:12px;color:var(--navy-800);}
.card h3{font-size:1rem;margin-bottom:.4em;}
.card p{font-size:.9rem;color:var(--ink-soft);margin-bottom:.5em;}
.card .price-tag{display:inline-block;background:var(--gray-100);color:var(--navy-800);font-family:var(--font-display);font-weight:700;font-size:.82rem;padding:4px 10px;border-radius:4px;margin-bottom:8px;border:1px solid var(--gray-300);}
.card a.more{font-size:.83rem;font-weight:700;color:var(--red);}
.card a.more::after{content:" →";}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:step;position:relative;}
.step{padding:0 16px;position:relative;text-align:center;}
.step-num{counter-increment:step;width:52px;height:52px;border-radius:50%;background:var(--navy-950);color:var(--accent);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:1.15rem;margin:0 auto 12px;border:3px solid var(--red);position:relative;z-index:2;}
.step-num::before{content:counter(step);}
.steps .step:not(:last-child)::after{content:"";position:absolute;top:26px;left:calc(50% + 26px);width:calc(100% - 52px);height:2px;background:repeating-linear-gradient(90deg,var(--navy-700) 0 8px,transparent 8px 14px);}
.step h3{font-size:.95rem;}
.step p{font-size:.82rem;color:var(--ink-soft);}

/* ---------- price calculator ---------- */
.calc-card{max-width:760px;margin:0 auto;background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-lg);}
.calc-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-bottom:18px;}
.calc-field label{display:block;font-family:var(--font-display);font-size:.82rem;font-weight:700;color:var(--navy-900);margin-bottom:6px;}
.calc-field select,.calc-field input{width:100%;padding:11px 13px;border:2px solid var(--gray-300);border-radius:var(--radius);font-family:var(--font-body);font-size:.92rem;color:var(--ink);background:var(--gray-50);transition:border-color .2s;}
.calc-field select{appearance:none;-webkit-appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%230B2447'%3E%3Cpath fill-rule='evenodd' d='M5.23 7.21a.75.75 0 011.06.02L10 11.168l3.71-3.938a.75.75 0 111.08 1.04l-4.25 4.5a.75.75 0 01-1.08 0l-4.25-4.5a.75.75 0 01.02-1.06z' clip-rule='evenodd'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:34px;}
.calc-field select:focus,.calc-field input:focus{outline:none;border-color:var(--navy-700);background-color:#fff;}
.calc-btn{width:100%;padding:13px;background:var(--navy-900);color:#fff;border:none;border-radius:var(--radius);font-family:var(--font-display);font-weight:700;font-size:.98rem;cursor:pointer;transition:background .2s;}
.calc-btn:hover{background:var(--navy-700);}
.calc-result{min-height:60px;margin-top:18px;display:flex;align-items:center;justify-content:center;text-align:center;border-radius:var(--radius);background:var(--gray-100);padding:18px;transition:background .2s;}
.calc-result.show{background:linear-gradient(135deg,var(--navy-950),var(--navy-800));}
.calc-placeholder{color:var(--ink-soft);font-size:.9rem;margin:0;}
.calc-result-inner{width:100%;}
.calc-result-label{font-family:var(--font-display);font-size:.9rem;font-weight:600;color:var(--accent);margin-bottom:6px;}
.calc-result-price{font-family:var(--font-display);font-size:1.9rem;font-weight:800;color:#fff;margin-bottom:8px;}
.calc-result-note{font-size:.78rem;color:var(--gray-300);max-width:52ch;margin:0 auto 16px;}
.calc-result-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;}
@media (max-width:640px){.calc-grid{grid-template-columns:1fr;}.calc-card{padding:20px;}.calc-result-price{font-size:1.4rem;}}

/* ---------- gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;}
.gallery a{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:1/1;display:block;box-shadow:var(--shadow-sm);}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .35s;}
.gallery a::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(11,36,71,.55) 100%);opacity:0;transition:opacity .25s;}
.gallery a:hover img{transform:scale(1.08);}
.gallery a:hover::after{opacity:1;}

/* ---------- reviews strip ---------- */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.reviews a{display:block;border-radius:var(--radius);overflow:hidden;border:1px solid var(--gray-300);box-shadow:var(--shadow-sm);background:#fff;}
.reviews img{width:100%;aspect-ratio:4/3;object-fit:cover;}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--gray-300);}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 4px;font-family:var(--font-display);font-weight:600;font-size:.98rem;color:var(--navy-900);}
.faq-q::after{content:"+";font-size:1.3rem;color:var(--red);flex-shrink:0;transition:transform .25s;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;font-size:.9rem;color:var(--ink-soft);}
.faq-item.open .faq-a{max-height:400px;}
.faq-a p{padding:0 4px 16px;margin:0;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--red);color:#fff;padding:42px 0;text-align:center;background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 12px,transparent 12px 24px);}
.cta-band h2{color:#fff;margin-bottom:.3em;}
.cta-band p{color:#FBDADA;margin-bottom:1.2em;}
.cta-band .btn-line,.cta-band .btn-call{background:#fff;color:var(--red);}
.cta-band .btn-line{color:var(--line-green-dark);}
.cta-band .btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- area list ---------- */
.area-search{max-width:520px;margin:0 auto 30px;position:relative;}
.area-search input{width:100%;padding:13px 18px;border:2px solid var(--gray-300);border-radius:4px;font-family:var(--font-body);font-size:.95rem;background:var(--gray-50);}
.area-search input:focus{outline:none;border-color:var(--navy-700);background:#fff;}
.area-group{margin-bottom:34px;}
.area-group h3{font-family:var(--font-display);font-size:1.05rem;color:var(--navy-900);border-bottom:3px solid var(--navy-900);padding-bottom:8px;margin-bottom:16px;}
.area-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;}
.area-grid a{display:block;background:var(--gray-100);border:1px solid var(--gray-300);border-radius:4px;padding:9px 13px;font-size:.85rem;color:var(--navy-800);font-weight:600;transition:all .2s;}
.area-grid a:hover{background:var(--navy-900);color:#fff;}
.area-grid a.hide{display:none;}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}
.contact-info .item{display:flex;gap:14px;margin-bottom:20px;}
.contact-info .item .ic{width:44px;height:44px;border-radius:8px;background:var(--navy-900);color:var(--accent);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.15rem;}
.contact-info .item h3{font-size:.98rem;margin-bottom:.2em;}
.contact-info .item p{margin:0;color:var(--ink-soft);font-size:.9rem;}
.contact-info .item a{color:var(--navy-900);font-weight:700;}
form.contact-form{background:#fff;border:1px solid var(--gray-300);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-sm);}
form.contact-form label{display:block;font-size:.82rem;font-weight:700;margin-bottom:6px;color:var(--navy-900);}
form.contact-form input,form.contact-form textarea{width:100%;padding:11px 13px;border:1px solid var(--gray-300);border-radius:var(--radius);margin-bottom:15px;font-family:var(--font-body);font-size:.92rem;background:var(--gray-50);}
form.contact-form input:focus,form.contact-form textarea:focus{outline:2px solid var(--navy-700);background:#fff;}
form.contact-form .btn{width:100%;}

/* ---------- internal links ---------- */
.link-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
.link-list a{display:block;padding:12px 15px;background:#fff;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:.87rem;font-weight:600;color:var(--navy-900);transition:border-color .2s,transform .2s;}
.link-list a:hover{border-color:var(--red);transform:translateX(3px);}

/* ---------- footer ---------- */
footer.site-footer{background:var(--navy-950);color:var(--steel);padding:50px 0 20px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px;}
.footer-grid h4{color:var(--accent);font-size:.92rem;margin-bottom:14px;}
.footer-grid ul li{margin-bottom:8px;}
.footer-grid a{font-size:.85rem;color:var(--steel);}
.footer-grid a:hover{color:#fff;}
.footer-brand img{height:42px;margin-bottom:10px;border-radius:6px;}
.footer-brand p{font-size:.83rem;line-height:1.7;color:#6C7789;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:.76rem;color:#5C6779;}

/* ---------- floating action buttons ---------- */
.float-actions{position:fixed;right:16px;bottom:16px;z-index:200;display:flex;flex-direction:column;gap:10px;}
.float-actions a{width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.3rem;box-shadow:0 8px 20px rgba(0,0,0,.28);}
.float-actions .fa-call{background:var(--red);}
.float-actions .fa-line{background:var(--line-green);}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:.8rem;color:var(--ink-soft);padding:14px 0;}
.breadcrumb a{color:var(--navy-700);font-weight:600;}
.breadcrumb span{margin:0 6px;color:var(--gray-500);}

/* ---------- page hero (province/inner pages) ---------- */
.page-hero{background:var(--navy-950);color:#fff;padding:36px 0 46px;}
.page-hero .kicker{color:var(--accent);font-family:var(--font-display);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;}
.page-hero h1{color:#fff;font-size:clamp(1.5rem,3.2vw,2.15rem);margin:.4em 0;}
.page-hero p{color:var(--gray-300);max-width:70ch;}
.page-body{max-width:800px;margin:0 auto;}
.page-body h2{margin-top:1.5em;font-size:1.3rem;border-left:4px solid var(--red);padding-left:13px;}
.page-body h3{margin-top:1.1em;font-size:1.05rem;color:var(--navy-700);}
.page-body p{color:var(--ink-soft);}
.page-body img{border-radius:var(--radius);margin:16px 0;box-shadow:var(--shadow-sm);}
.img-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 0;}
.tag{background:var(--gray-100);color:var(--navy-800);font-size:.76rem;padding:5px 12px;border-radius:4px;font-weight:600;border:1px solid var(--gray-300);}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;}
  .hero-visual{order:-1;min-height:170px;}
  .seal{width:150px;height:150px;}
  .seal-inner{width:110px;height:110px;margin:20px auto;}
  .seal-inner .big{font-size:1rem;}
  .seal-inner .mid{font-size:.62rem;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-5{grid-template-columns:repeat(3,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:32px;}
  .steps .step:nth-child(2)::after{display:none;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .link-list{grid-template-columns:1fr;}
  .img-row{grid-template-columns:1fr;}
  .area-grid{grid-template-columns:repeat(2,1fr);}
  .calc-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  nav.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:3px solid var(--navy-900);box-shadow:var(--shadow-lg);}
  nav.main-nav.open{display:flex;}
  nav.main-nav a{padding:13px 20px;border-bottom:1px solid var(--gray-100);}
  .site-header .wrap{position:relative;}
  .nav-toggle{display:flex;}
  .header-cta .btn-outline{display:none;}
  .topbar .tb-note{display:none;}
  .grid-5{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .reviews{grid-template-columns:repeat(2,1fr);}
  .hero{padding:32px 0 60px;}
  .hero-stats{gap:16px;}
  .area-grid{grid-template-columns:1fr;}
  .calc-grid{grid-template-columns:1fr;}
}