:root {
  --navy: #06295d;
  --blue: #006ac6;
  --cyan: #00c8e9;
  --ink: #10223a;
  --muted: #617086;
  --line: #dce7f2;
  --soft: #f4f8fc;
  --white: #ffffff;
  --radius: 18px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; line-height: 1.55; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(220,231,242,.8); backdrop-filter: blur(14px); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: flex-end; gap: 12px; min-width: 0; }
.brand img { width: 146px; height: 65px; object-fit: contain; object-position: left bottom; }
.brand small { color: var(--muted); border-left: 1px solid var(--line); padding-left: 12px; padding-bottom: 2px; white-space: nowrap; font-weight: 750; }
.nav-links { display: flex; align-items: center; gap: 22px; font-size: .92rem; font-weight: 650; }
.nav-links a:not(.button) { color: #405068; }
.nav-links a:hover, .nav-links a.active { color: var(--blue); }
.language-switch { display: inline-flex; align-items: center; gap: 6px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 7px; color: #405068; font-size: .8rem; font-weight: 800; white-space: nowrap; }
.language-switch a { color: inherit; }
.language-switch a:hover, .language-switch a.active { color: var(--blue); }
.language-switch .separator { color: #a8b6c5; font-weight: 500; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 17px; border: 1px solid var(--blue); border-radius: 8px; background: var(--blue); color: white; font-weight: 750; cursor: pointer; }
.button:hover { background: #0054a6; border-color: #0054a6; }
.button.secondary { background: transparent; color: var(--blue); }
.button.secondary:hover { background: #eaf5ff; }
.button.white { background: white; color: var(--navy); border-color: white; }

.hero { overflow: hidden; position: relative; color: white; background: radial-gradient(circle at 62% 32%, rgba(79,220,255,.46), transparent 20rem), linear-gradient(112deg, #06295d 0%, #0d6eb1 48%, #f7fcff 100%); }
.hero::after { content: ""; position: absolute; inset: 0; opacity: .17; background-image: linear-gradient(90deg, transparent 49.8%, #83dfff 50%, transparent 50.2%), linear-gradient(0deg, transparent 49.8%, #83dfff 50%, transparent 50.2%); background-size: 56px 56px; mask-image: linear-gradient(to right, transparent, #000 40%, transparent); }
.hero-inner { position: relative; z-index: 1; padding: 116px 0 104px; display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 55px; }
.eyebrow { margin: 0 0 14px; color: var(--cyan); font-size: .77rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
h1 { max-width: 760px; margin: 0; font-size: clamp(2.45rem, 5vw, 4.6rem); line-height: 1.04; letter-spacing: -.045em; }
.hero p:not(.eyebrow) { max-width: 660px; margin: 25px 0 32px; color: #d6e7fc; font-size: 1.14rem; }
.actions { display: flex; flex-wrap: wrap; gap: 13px; }
.hero-mark { position: relative; display: grid; place-items: center; min-height: 300px; }
.hero-mark::before, .hero-mark::after { content: ""; position: absolute; border: 1px solid rgba(155,236,255,.48); border-radius: 50%; }
.hero-mark::before { width: 310px; height: 310px; }
.hero-mark::after { width: 220px; height: 220px; }
.hero-mark img { position: relative; z-index: 1; width: min(420px, 100%); filter: drop-shadow(0 18px 30px rgba(0,0,0,.16)); }

.section { padding: 92px 0; }
.section.soft { background: var(--soft); }
.section.navy { color: white; background: var(--navy); }
.section-heading { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; align-items: end; margin-bottom: 43px; }
.section-heading h2, .page-intro h1 { margin: 0; font-size: clamp(2rem, 3vw, 3rem); line-height: 1.1; letter-spacing: -.035em; }
.section-heading p { margin: 0; color: var(--muted); font-size: 1.05rem; }
.navy .section-heading p { color: #bed0e8; }
.grid { display: grid; gap: 20px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card { padding: 29px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.card h3 { margin: 16px 0 8px; font-size: 1.27rem; }
.card p { margin: 0; color: var(--muted); }
.icon { display: grid; width: 45px; height: 45px; place-items: center; border-radius: 12px; color: var(--blue); background: #e4f4ff; font-weight: 850; font-size: 1.25rem; }
.product-card { overflow: hidden; padding: 0; }
.product-card .product-top { min-height: 230px; padding: 33px; display: grid; align-items: center; background: linear-gradient(135deg, #eef9ff, #f7fbff 60%, #d7effe); }
.product-card .product-top img { width: 235px; margin: 0 auto; }
.product-card .product-top img.lamp-photo { width: auto; height: 280px; max-width: 120%; object-fit: contain; }
.lamp-photo { object-fit: contain; }
.lamp-photo-100 { transform: rotate(-3deg); }
.lamp-photo-106 { transform: rotate(3deg); }
.product-card .product-body { padding: 28px; }
.product-card h3 { margin: 0; font-size: 1.55rem; }
.product-card p { margin: 7px 0 18px; color: var(--muted); }
.spec-chips { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 21px; }
.spec-chips span { padding: 5px 9px; border-radius: 5px; background: #edf5fb; color: #36516e; font-size: .83rem; font-weight: 700; }
.text-link { color: var(--blue); font-weight: 800; }
.process { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid rgba(161,208,255,.26); border-radius: var(--radius); overflow: hidden; }
.process div { padding: 34px 29px; border-right: 1px solid rgba(161,208,255,.26); }
.process div:last-child { border-right: 0; }
.process strong { display: block; margin-bottom: 9px; color: var(--cyan); font-size: .82rem; letter-spacing: .1em; }
.process h3 { margin: 0 0 8px; font-size: 1.25rem; }
.process p { margin: 0; color: #c6d7ea; }
.cta { padding: 58px 0; background: linear-gradient(110deg, #0075c9, #00a9d3); color: white; }
.cta .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.cta h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.5rem); line-height: 1.14; }
.cta p { margin: 8px 0 0; color: #e4fbff; }

.page-intro { padding: 83px 0 67px; background: linear-gradient(122deg, #f1f9ff, white 70%); border-bottom: 1px solid var(--line); }
.page-intro p { max-width: 780px; margin: 20px 0 0; color: var(--muted); font-size: 1.12rem; }
.detail-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 65px; align-items: start; }
.product-visual { position: sticky; top: 108px; padding: 50px 30px; border-radius: var(--radius); background: radial-gradient(circle, #fff 20%, #e8f7ff); }
.product-visual img { width: 330px; margin: auto; }
.product-visual img.lamp-photo { width: 100%; max-height: 420px; object-fit: contain; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table td { padding: 13px 0; border-bottom: 1px solid var(--line); }
.data-table td:first-child { width: 47%; color: var(--muted); }
.product-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.resource-list { border-top: 1px solid var(--line); }
.resource { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line); }
.resource h3 { margin: 0 0 5px; font-size: 1.16rem; }
.resource p { margin: 0; color: var(--muted); }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; }
.contact-grid h2 { margin-top: 0; }
.contact-list { padding: 0; list-style: none; }
.contact-list li { padding: 15px 0; border-bottom: 1px solid var(--line); }
.contact-list strong { display: block; margin-bottom: 3px; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--blue); }
form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
label { display: grid; gap: 6px; color: #405068; font-size: .9rem; font-weight: 650; }
label.full { grid-column: 1 / -1; }
input, select, textarea { width: 100%; padding: 12px; border: 1px solid #bfd0e2; border-radius: 7px; color: var(--ink); font: inherit; }
textarea { min-height: 126px; resize: vertical; }
.form-note { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: .82rem; }

.site-footer { padding: 50px 0 24px; color: #b9cbe0; background: #031a3c; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; padding-bottom: 35px; }
.site-footer .brand img { filter: brightness(0) invert(1); }
.site-footer .brand small { color: #b9cbe0; }
.footer-title { margin: 0 0 13px; color: white; font-size: .83rem; letter-spacing: .12em; text-transform: uppercase; }
.footer-grid p, .footer-grid a { margin: 0 0 7px; display: block; font-size: .92rem; }
.copyright { padding-top: 20px; border-top: 1px solid rgba(185,203,224,.17); font-size: .82rem; }

@media (max-width: 850px) {
  .nav { min-height: 65px; } .brand img { width: 120px; } .brand small { display: none; }
  .nav-links a:not(.button) { display: none; } .nav-links { gap: 10px; } .nav-links .language-switch { display: inline-flex; }
  .hero-inner, .section-heading, .detail-grid, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-inner { padding: 78px 0 65px; } .hero-mark { min-height: 190px; } .hero-mark::before { width: 190px; height: 190px; } .hero-mark::after { width: 135px; height: 135px; }
  .grid.three, .grid.two, .process, .footer-grid { grid-template-columns: 1fr; } .process div { border-right: 0; border-bottom: 1px solid rgba(161,208,255,.26); } .process div:last-child { border-bottom: 0; }
  .cta .container { display: block; } .cta .button { margin-top: 22px; } .section { padding: 65px 0; }
  .product-visual { position: static; } form { grid-template-columns: 1fr; } .resource { grid-template-columns: 1fr; } .resource .button { width: fit-content; }
}