/* =====================================================================
   WELLPACK ตู้อบอุตสาหกรรม — style.css
   โทนสี: ดำถ่าน (charcoal) + ส้มเปลวไฟตามโลโก้ + เทาสแตนเลส
   เปลี่ยนโทนทั้งเว็บได้จากตัวแปรใน :root
   ===================================================================== */

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Sarabun', 'Prompt', system-ui, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.75;
  overflow-x: hidden;
  font-size: 1.0625rem;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
h1, h2, h3, h4, .btn, .logo-text, .section-label, .stat-num, .product-name-en, .process-num { font-family: 'Prompt', 'Sarabun', sans-serif; }

/* ===== TOKENS ===== */
:root {
  --ink:        #15181C;   /* ดำถ่าน */
  --ink-2:      #22272D;
  --ink-3:      #2E343B;
  --steel:      #8C959E;   /* เทาสแตนเลส */
  --steel-2:    #C9CFD4;
  --steel-3:    #E8EBEE;
  --steel-bg:   #F3F5F7;
  --orange:     #F26B1D;   /* ส้มเปลวไฟ (ตามโลโก้) */
  --orange-2:   #FF8A2A;
  --orange-dk:  #D4560F;
  --orange-soft:#FFF1E7;
  --flame:      linear-gradient(135deg, #FF8A2A 0%, #F26B1D 55%, #E03E0D 100%);
  --text:       #1C2127;
  --muted:      #5F6973;
  --white:      #FFFFFF;
  --radius:     18px;
  --radius-sm:  10px;
  --shadow:     0 6px 28px rgba(21,24,28,.10);
  --shadow-lg:  0 18px 60px rgba(21,24,28,.18);
  --t:          .3s cubic-bezier(.4,0,.2,1);
}

/* ===== UTILITIES ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 860px; }
.text-center { text-align: center; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-dark { background: var(--ink); color: var(--white); }
.section-steel { background: var(--steel-bg); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-block; background: var(--orange-soft); color: var(--orange-dk);
  font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 40px; margin-bottom: 14px;
}
.section-dark .section-label, .section-label-light { background: rgba(255,255,255,.1); color: var(--orange-2); }
.section-title { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 700; line-height: 1.25; margin-bottom: 14px; color: var(--ink); letter-spacing: -.01em; }
.section-dark .section-title { color: var(--white); }
.section-title .accent, .hero-title .accent { color: var(--orange); }
.section-desc { color: var(--muted); font-size: 1.05rem; max-width: 700px; margin: 0 auto; }
.section-dark .section-desc { color: var(--steel-2); }
.h3 { font-size: 1.35rem; font-weight: 600; color: var(--ink); margin: 0 0 14px; }
.ico { width: 28px; height: 28px; flex-shrink: 0; }
.ico-sm { width: 18px; height: 18px; }
.br-desktop { display: inline; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: .98rem;
  transition: var(--t); white-space: nowrap; line-height: 1.3;
}
.btn-lg { padding: 16px 32px; font-size: 1.05rem; }
.btn-primary { background: var(--flame); color: #fff; box-shadow: 0 8px 24px rgba(242,107,29,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(242,107,29,.45); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--ink-3); transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,.08); color: #fff; border: 1.5px solid rgba(255,255,255,.35); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.16); border-color: #fff; }
.btn-link { color: var(--orange-dk); padding-left: 6px; padding-right: 6px; }
.btn-link:hover { color: var(--orange); text-decoration: underline; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(21,24,28,.08);
  transition: var(--t);
}
.navbar.scrolled { box-shadow: var(--shadow); }
.nav-inner { display: flex; align-items: center; gap: 20px; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark { height: 48px; width: auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1.05; }
.logo-brand { font-weight: 700; font-size: 1.25rem; letter-spacing: .02em; color: var(--ink); }
.logo-brand em { font-style: normal; color: var(--orange); }
.logo-sub { font-size: .78rem; color: var(--muted); font-weight: 500; }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  font-family: 'Prompt', sans-serif; font-size: .92rem; font-weight: 500; color: var(--text);
  padding: 8px 13px; border-radius: var(--radius-sm); transition: var(--t);
}
.nav-links a:hover, .nav-links a.active { background: var(--orange-soft); color: var(--orange-dk); }
.nav-cta-mobile { display: none; }
.btn-call {
  display: inline-flex; align-items: center; gap: 8px; background: var(--ink); color: #fff;
  font-family: 'Prompt', sans-serif; font-size: .9rem; font-weight: 600;
  padding: 10px 18px; border-radius: 999px; transition: var(--t); white-space: nowrap;
}
.btn-call:hover { background: var(--orange); transform: translateY(-1px); }
.burger { display: none; flex-direction: column; gap: 5px; padding: 8px; margin-left: auto; }
.burger span { display: block; width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: var(--t); }
.burger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero { position: relative; overflow: hidden; padding: 140px 0 80px; background: var(--ink); color: #fff; min-height: 640px; min-height: clamp(640px, 92vh, 940px); display: flex; align-items: center; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 85% 20%, rgba(242,107,29,.22), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, rgba(140,149,158,.18), transparent 60%),
    repeating-linear-gradient(180deg, rgba(255,255,255,.025) 0 1px, transparent 1px 7px),
    linear-gradient(160deg, #1B1F24 0%, #15181C 50%, #0F1114 100%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-family: 'Prompt', sans-serif; font-size: .82rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--orange-2); margin-bottom: 22px; font-weight: 500;
}
.hero-eyebrow i { width: 4px; height: 4px; border-radius: 50%; background: var(--steel); }
.hero-title { font-size: clamp(2.4rem, 5.2vw, 4.2rem); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; margin-bottom: 22px; }
.hero-desc { font-size: 1.12rem; color: var(--steel-2); max-width: 560px; margin-bottom: 32px; }
.hero-desc strong { color: #fff; font-weight: 600; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-cta-center { justify-content: center; }
.hero-stats { display: flex; gap: 36px; margin-top: 48px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; padding-left: 16px; border-left: 2px solid var(--orange); }
.stat-num { font-size: 1.7rem; font-weight: 700; line-height: 1.1; color: #fff; }
.stat-num small { font-size: .85rem; margin-left: 4px; color: var(--steel-2); font-weight: 500; }
.stat-label { font-size: .85rem; color: var(--steel-2); }

.hero-visual { position: relative; height: 560px; }
.hero-photo { position: absolute; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--ink-2); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-photo-main { top: 0; right: 0; width: 72%; height: 100%; }
.hero-photo-main figcaption {
  position: absolute; left: 16px; bottom: 16px; display: flex; align-items: center; gap: 8px;
  background: rgba(21,24,28,.72); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  color: #fff; font-size: .82rem; padding: 8px 14px; border-radius: 999px; font-family: 'Prompt', sans-serif;
}
.hero-photo-main .dot { width: 8px; height: 8px; border-radius: 50%; background: #3DDC84; box-shadow: 0 0 0 4px rgba(61,220,132,.25); }
.hero-photo-sub { left: 0; bottom: 40px; width: 40%; height: 52%; border: 4px solid var(--ink); }
.hero-badge-card {
  position: absolute; left: 4%; top: 28px; display: flex; align-items: center; gap: 12px;
  background: #fff; color: var(--ink); padding: 12px 16px; border-radius: 14px; box-shadow: var(--shadow-lg);
  animation: float 5s ease-in-out infinite;
}
.hero-badge-card .ico { color: var(--orange); }
.hero-badge-card strong { display: block; font-size: .92rem; font-family: 'Prompt', sans-serif; }
.hero-badge-card span { font-size: .78rem; color: var(--muted); }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ===== TRUST STRIP ===== */
.strip { background: var(--white); border-bottom: 1px solid var(--steel-3); position: relative; z-index: 2; }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.strip-item { display: flex; gap: 14px; align-items: flex-start; padding: 26px 20px; border-left: 1px solid var(--steel-3); }
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-item .ico { color: var(--orange); width: 30px; height: 30px; margin-top: 2px; }
.strip-item strong { display: block; font-family: 'Prompt', sans-serif; font-size: .98rem; color: var(--ink); line-height: 1.3; }
.strip-item p { font-size: .86rem; color: var(--muted); margin-top: 3px; }

/* ===== PRODUCT CARDS ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.product-grid-related { grid-template-columns: repeat(2, 1fr); max-width: 820px; margin: 0 auto; }
.product-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--steel-3);
  display: flex; flex-direction: column; transition: var(--t);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-media { position: relative; display: block; aspect-ratio: 4 / 4.2; overflow: hidden; background: var(--steel-3); }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-series {
  position: absolute; top: 14px; left: 14px; background: rgba(21,24,28,.82); color: var(--orange-2);
  font-family: 'Prompt', sans-serif; font-size: .74rem; letter-spacing: .12em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.product-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.product-tag { font-size: .78rem; color: var(--orange-dk); font-weight: 600; letter-spacing: .06em; }
.product-name-en { font-size: 1.28rem; font-weight: 700; color: var(--ink); line-height: 1.25; margin-top: 4px; }
.product-name-th { font-family: 'Prompt', sans-serif; font-weight: 500; color: var(--muted); margin-bottom: 12px; }
.product-summary { font-size: .95rem; color: var(--text); margin-bottom: 16px; }
.product-specs { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; border-top: 1px dashed var(--steel-2); padding-top: 14px; }
.product-specs li { display: flex; justify-content: space-between; gap: 12px; font-size: .86rem; }
.product-specs span { color: var(--muted); flex-shrink: 0; }
.product-specs strong { font-weight: 500; text-align: right; color: var(--ink); }
.product-actions { margin-top: auto; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* ===== GALLERY ===== */
.gallery-tabs { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-bottom: 36px; }
.tab-btn {
  font-family: 'Prompt', sans-serif; font-size: .92rem; font-weight: 500; padding: 9px 20px; border-radius: 999px;
  color: var(--steel-2); border: 1px solid rgba(255,255,255,.18); transition: var(--t);
}
.tab-btn:hover { color: #fff; border-color: rgba(255,255,255,.4); }
.tab-btn.active { background: var(--flame); color: #fff; border-color: transparent; }
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.gallery-item {
  position: relative; display: block; aspect-ratio: 3 / 4; border-radius: 14px; overflow: hidden; background: var(--ink-2);
  transition: var(--t);
}
.gallery-item.hidden { display: none; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 55%); }
.gallery-cat {
  position: absolute; top: 12px; left: 12px; z-index: 2; font-family: 'Prompt', sans-serif; font-size: .72rem;
  background: var(--orange); color: #fff; padding: 4px 10px; border-radius: 999px;
}
.gallery-title { position: absolute; left: 14px; right: 14px; bottom: 12px; z-index: 2; color: #fff; font-size: .88rem; line-height: 1.4; font-weight: 500; }

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed; inset: 0; z-index: 300; background: rgba(10,12,14,.94); display: none; align-items: center; justify-content: center;
}
.lightbox.open { display: flex; }
.lightbox figure { max-width: 92vw; max-height: 90vh; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.lightbox img { max-width: 92vw; max-height: 80vh; width: auto; height: auto; border-radius: 10px; box-shadow: var(--shadow-lg); }
.lightbox figcaption { color: var(--steel-2); font-size: .95rem; text-align: center; }
.lightbox-close { position: absolute; top: 18px; right: 22px; color: #fff; font-size: 2.4rem; line-height: 1; opacity: .8; }
.lightbox-close:hover { opacity: 1; }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 3rem; width: 56px; height: 56px; border-radius: 50%; background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; line-height: 1; }
.lightbox-nav:hover { background: var(--orange); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

/* ===== MATERIALS ===== */
.material-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.material-card {
  background: var(--white); border: 1px solid var(--steel-3); border-radius: var(--radius); padding: 28px 18px; text-align: center; transition: var(--t);
}
.material-card:hover { border-color: var(--orange); transform: translateY(-4px); box-shadow: var(--shadow); }
.material-icon {
  width: 68px; height: 68px; border-radius: 20px; background: var(--orange-soft); color: var(--orange);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 16px;
}
.material-icon .ico { width: 34px; height: 34px; }
.material-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.material-card p { font-size: .86rem; color: var(--muted); line-height: 1.55; }
.material-note { text-align: center; color: var(--muted); font-size: .95rem; margin-top: 28px; }

/* ===== WHY ===== */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { background: var(--white); border-radius: var(--radius); padding: 32px 26px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.why-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--flame); }
.why-icon { width: 56px; height: 56px; border-radius: 14px; background: var(--ink); color: var(--orange-2); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.why-card h3 { font-size: 1.12rem; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.why-card p { font-size: .93rem; color: var(--muted); }

.process { margin-top: 72px; }
.process-title { text-align: center; font-size: 1.4rem; font-weight: 600; color: var(--ink); margin-bottom: 32px; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.process-step { position: relative; padding: 26px 22px 22px; background: var(--white); border: 1px solid var(--steel-3); border-radius: var(--radius); }
.process-num { display: inline-block; font-size: 2rem; font-weight: 700; color: var(--orange); line-height: 1; margin-bottom: 10px; }
.process-step strong { display: block; font-family: 'Prompt', sans-serif; font-size: 1.02rem; color: var(--ink); margin-bottom: 6px; }
.process-step p { font-size: .9rem; color: var(--muted); }

/* ===== CTA ===== */
.cta { position: relative; padding: 120px 0; color: #fff; overflow: hidden; background: var(--ink); }
.cta-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 40%; opacity: .32; filter: saturate(.8); }
.cta::before { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(21,24,28,.95) 0%, rgba(21,24,28,.7) 55%, rgba(242,107,29,.35) 100%); }
.cta-content { position: relative; max-width: 760px; }
.cta h2 { font-size: clamp(1.8rem, 3.5vw, 2.7rem); font-weight: 700; line-height: 1.2; margin-bottom: 16px; }
.cta p { color: var(--steel-2); font-size: 1.08rem; margin-bottom: 30px; max-width: 640px; }

/* ===== FAQ ===== */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--white); border: 1px solid var(--steel-3); border-radius: 14px; overflow: hidden; transition: var(--t); }
.faq-item[open] { border-color: var(--orange); box-shadow: var(--shadow); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 18px 56px 18px 22px; font-family: 'Prompt', sans-serif; font-weight: 500; font-size: 1.05rem; color: var(--ink); position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; border-radius: 50%;
  background: var(--orange-soft); color: var(--orange-dk); display: flex; align-items: center; justify-content: center; font-size: 1.3rem; transition: var(--t);
}
.faq-item[open] summary::after { content: '–'; background: var(--orange); color: #fff; }
.faq-answer { padding: 0 22px 20px; color: var(--muted); }

/* ===== CONTACT ===== */
.section-contact { padding-bottom: 0; background: var(--steel-bg); }
.contact-grid { display: grid; grid-template-columns: 1.4fr .8fr; gap: 32px; margin-bottom: 72px; }
.contact-form-card { background: var(--white); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.contact-form-card-center { max-width: 860px; margin: 0 auto; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-family: 'Prompt', sans-serif; font-size: .9rem; font-weight: 500; color: var(--ink); }
.req { color: var(--orange); }
.form-group input, .form-group select, .form-group textarea {
  font: inherit; font-size: .98rem; padding: 12px 14px; border: 1.5px solid var(--steel-2); border-radius: var(--radius-sm);
  background: #fff; color: var(--text); transition: var(--t); width: 100%;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--orange); box-shadow: 0 0 0 4px rgba(242,107,29,.14); }
.form-group textarea { resize: vertical; min-height: 110px; }
.hp-field { position: absolute; left: -9999px; top: -9999px; height: 0; overflow: hidden; }
.form-footer { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 6px; }
.form-note { font-size: .9rem; color: var(--muted); }
.form-note a { color: #06C755; font-weight: 600; }
.form-status { margin-top: 16px; padding: 0; border-radius: var(--radius-sm); font-size: .95rem; font-weight: 500; display: none; }
.form-status.success { display: block; padding: 12px 16px; background: #E8F8EE; color: #137A3C; }
.form-status.error { display: block; padding: 12px 16px; background: #FDECEC; color: #B42318; }
.btn-submit[disabled] { opacity: .65; cursor: wait; transform: none; }

.contact-info { display: flex; flex-direction: column; gap: 18px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; background: var(--white); padding: 18px 20px; border-radius: 14px; border: 1px solid var(--steel-3); font-size: .95rem; }
.contact-item .ico { color: var(--orange); margin-top: 2px; }
.contact-item strong { display: block; font-family: 'Prompt', sans-serif; color: var(--ink); margin-bottom: 2px; }
.contact-item a { color: var(--orange-dk); font-weight: 500; }
.contact-item a:hover { text-decoration: underline; }
.social-row { display: flex; gap: 10px; flex-wrap: wrap; }
.social-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 999px; background: #1877F2; color: #fff; font-family: 'Prompt', sans-serif; font-weight: 500; font-size: .92rem; transition: var(--t); }
.social-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.social-line { background: #06C755; }
.map-wrap { line-height: 0; filter: grayscale(.15); }

/* ===== FOOTER ===== */
.footer { background: var(--ink); color: var(--steel-2); padding: 72px 0 0; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 48px; }
.footer-logo-card { background: #fff; border-radius: 14px; padding: 8px; width: 136px; margin-bottom: 18px; }
.footer-tagline { font-family: 'Prompt', sans-serif; color: var(--orange-2); letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin-bottom: 8px; }
.footer h4 { font-size: 1rem; color: #fff; font-weight: 600; margin-bottom: 16px; }
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer a:hover { color: var(--orange-2); }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .ico { color: var(--orange); margin-top: 3px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; font-size: .82rem; color: var(--steel); text-align: center; }

/* ===== FLOAT BUTTONS ===== */
.float-btn {
  position: fixed; right: 20px; z-index: 90; width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; box-shadow: 0 10px 30px rgba(0,0,0,.25); transition: var(--t);
}
.float-btn:hover { transform: scale(1.08); }
.float-line { bottom: 92px; background: #06C755; }
.float-phone { bottom: 24px; background: var(--flame); }

/* ===== PRODUCT PAGE ===== */
.product-hero { padding: 110px 0 56px; background: var(--steel-bg); }
.breadcrumb { display: flex; gap: 10px; font-size: .88rem; color: var(--muted); margin-bottom: 28px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--orange-dk); }
.breadcrumb em { font-style: normal; color: var(--ink); }
.product-hero-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.product-main-img { border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 4.6; background: var(--steel-3); box-shadow: var(--shadow-lg); }
.product-main-img img { width: 100%; height: 100%; object-fit: cover; }
.product-thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 12px; }
.product-thumb { border-radius: 10px; overflow: hidden; aspect-ratio: 1; border: 2px solid transparent; transition: var(--t); padding: 0; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-thumb.active, .product-thumb:hover { border-color: var(--orange); }
.product-series-badge { display: inline-block; font-family: 'Prompt', sans-serif; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; background: var(--ink); color: var(--orange-2); padding: 6px 14px; border-radius: 999px; margin-bottom: 16px; }
.product-intro h1 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); font-weight: 700; line-height: 1.15; color: var(--ink); margin-bottom: 14px; }
.product-intro h1 small { display: block; font-size: .55em; font-weight: 500; color: var(--orange-dk); margin-top: 6px; }
.product-intro .lead { font-size: 1.08rem; color: var(--text); margin-bottom: 22px; }
.feature-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.feature-list li { display: flex; gap: 10px; align-items: flex-start; font-size: .98rem; }
.feature-list .ico { color: var(--orange); margin-top: 5px; }

.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.product-desc p { color: var(--text); margin-bottom: 14px; }
.product-desc .h3 { margin-top: 24px; }
.product-desc .h3:first-child { margin-top: 0; }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-list li { background: var(--orange-soft); color: var(--orange-dk); font-size: .9rem; padding: 6px 14px; border-radius: 999px; font-weight: 500; }
.spec-table { width: 100%; border-collapse: collapse; font-size: .95rem; margin-bottom: 10px; }
.spec-table th, .spec-table td { padding: 12px 14px; border-bottom: 1px solid var(--steel-3); text-align: left; vertical-align: top; }
.spec-table th { width: 38%; font-family: 'Prompt', sans-serif; font-weight: 500; color: var(--muted); background: var(--steel-bg); }
.spec-note { font-size: .85rem; color: var(--muted); margin-bottom: 24px; }
.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 12px; }
.model-card { background: var(--ink); color: #fff; border-radius: 14px; padding: 18px 16px; display: flex; flex-direction: column; gap: 4px; }
.model-card strong { font-family: 'Prompt', sans-serif; font-size: 1.1rem; color: var(--orange-2); }
.model-card span { font-size: .95rem; }
.model-card small { font-size: .8rem; color: var(--steel-2); }

/* ===== 404 ===== */
.notfound { padding-top: 160px; min-height: 70vh; }
.notfound-code { font-family: 'Prompt', sans-serif; font-size: 6rem; font-weight: 700; line-height: 1; color: var(--orange); margin-bottom: 8px; }
.notfound .section-desc { margin-bottom: 28px; }

/* ===== ANIMATION ===== */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  .hero-badge-card { animation: none; }
  html { scroll-behavior: auto; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
  .material-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid, .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  .nav-links {
    position: fixed; top: 76px; left: 0; right: 0; background: #fff; flex-direction: column; gap: 2px;
    padding: 14px 20px 22px; border-bottom: 1px solid var(--steel-3); box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: var(--t);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; font-size: 1rem; }
  .nav-cta-mobile { display: block; margin-top: 8px; background: var(--flame); color: #fff !important; text-align: center; border-radius: 999px; }
  .btn-call span { display: none; }
  .btn-call { padding: 10px 12px; margin-left: auto; }
  .burger { display: flex; margin-left: 0; }
  .hero { padding: 120px 0 60px; min-height: 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { height: 460px; max-width: 560px; }
  .br-desktop { display: none; }
  .strip-grid { grid-template-columns: 1fr 1fr; }
  .strip-item { padding: 18px 16px; border-left: 0; border-top: 1px solid var(--steel-3); }
  .strip-item:nth-child(-n+2) { border-top: 0; }
  .strip-item:nth-child(odd) { padding-left: 0; }
  .product-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .product-hero-grid, .product-detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-main-img { aspect-ratio: 4 / 3.6; max-width: 640px; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 36px; }
  .logo-sub { display: none; }
  .logo-brand { font-size: 1.1rem; }
  .logo-mark { height: 40px; }
  .hero-visual { height: 380px; }
  .hero-photo-main { width: 78%; }
  .hero-photo-sub { width: 44%; height: 48%; bottom: 20px; }
  .hero-badge-card { top: 10px; left: 0; padding: 10px 12px; }
  .hero-stats { gap: 20px; margin-top: 36px; }
  .stat-num { font-size: 1.4rem; }
  .strip-grid { grid-template-columns: 1fr; }
  .strip-item { padding: 14px 0; border-top: 1px solid var(--steel-3); }
  .strip-item:nth-child(-n+2) { border-top: 1px solid var(--steel-3); }
  .strip-item:first-child { border-top: 0; }
  .product-grid, .product-grid-related { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .gallery-title { font-size: .78rem; }
  .material-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .material-card { padding: 22px 12px; }
  .why-grid, .process-grid { grid-template-columns: 1fr; }
  .cta { padding: 80px 0; }
  .contact-form-card { padding: 24px 18px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; gap: 0; }
  .form-footer { flex-direction: column; align-items: stretch; text-align: center; }
  .btn-submit { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .float-btn { width: 50px; height: 50px; right: 14px; }
  .float-line { bottom: 80px; }
  .float-phone { bottom: 20px; }
  .product-thumbs { grid-template-columns: repeat(4, 1fr); }
  .model-grid { grid-template-columns: 1fr; }
  .lightbox-nav { width: 44px; height: 44px; font-size: 2.2rem; }
  .lightbox-prev { left: 8px; }
  .lightbox-next { right: 8px; }
}