/* ============================================================
   หาดใหญ่ตาข่ายถัก (HY Chainlink) — Navy / Industrial Design System
   Ported from the Claude Design prototype to semantic, crawlable HTML.
   ============================================================ */

:root {
  /* Surfaces — deep navy to slate ramp (กรมท่า + เทาเมทัลลิก) */
  --ink-0: #050B1A;
  --ink-1: #0A1226;
  --ink-2: #0F1A33;
  --ink-3: #16243F;
  --ink-4: #1F3052;
  --ink-5: #2E4775;
  --ink-6: #4A6090;

  /* Foreground */
  --fg-1: #F4F7FB;
  --fg-2: #C7D2E0;
  --fg-3: #8B98AE;
  --fg-4: #5A6680;

  /* Industrial accents */
  --orange: #FF6A1F;
  --orange-deep: #D94E0A;
  --orange-soft: #FF8B4E;
  --yellow: #FFC700;
  --steel: #6B7F99;
  --steel-warm: #A8B5C7;
  --navy: #1E3A8A;
  --navy-bright: #2C4FB1;

  /* Brand channel colors */
  --line: #06C755;
  --facebook: #1877F2;

  /* Status */
  --success: #4FCB7F;
  --danger: #FF3B3B;

  /* Type */
  --font-display: "Kanit", "IBM Plex Sans Thai", system-ui, sans-serif;
  --font-body: "Kanit", "IBM Plex Sans Thai", system-ui, sans-serif;

  /* Radii — small, industrial */
  --r-xs: 2px;
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 10px;
  --r-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 40px rgba(0, 0, 0, 0.55);
  --shadow-orange: 0 8px 28px rgba(255, 106, 31, 0.40);
  --shadow-yellow: 0 8px 28px rgba(255, 199, 0, 0.38);
  --shadow-navy: 0 12px 40px rgba(5, 11, 26, 0.65);

  --maxw: 1440px;
  --header-h: 76px;
}

/* ============================================================ Reset ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

html, body {
  background: var(--ink-1);
  color: var(--fg-1);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { min-height: 100vh; overflow-x: hidden; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
img, svg, video, iframe { display: block; max-width: 100%; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 800; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 2px; border-radius: 2px; }
::selection { background: var(--orange); color: var(--ink-0); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.icon { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2;
  stroke-linecap: round; stroke-linejoin: round; flex: none; }

/* ============================================================ Layout ============================================================ */
.container { max-width: var(--maxw); margin: 0 auto; padding-inline: clamp(16px, 4vw, 56px); }
.section { padding-block: clamp(64px, 9vw, 100px); position: relative; }
.section--ink0 { background: var(--ink-0); }
.section--ink1 { background: var(--ink-1); }

.section__head { margin-bottom: 48px; }
.section__title {
  font-size: clamp(34px, 5vw, 64px); font-weight: 900; line-height: 1.05;
  letter-spacing: -0.015em; margin: 16px 0 14px; max-width: 880px;
}
.section__lead { font-size: 16px; color: var(--fg-2); line-height: 1.6; max-width: 560px; }
.t-orange { color: var(--orange); }
.t-yellow { color: var(--yellow); }
.t-muted  { color: var(--fg-3); }

/* Hazard stripes utility */
.hazard-stripes {
  background-image: repeating-linear-gradient(-45deg,
    var(--yellow) 0, var(--yellow) 14px, #0A1226 14px, #0A1226 28px);
}
.blueprint-grid {
  position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
          mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}

/* ============================================================ Pills ============================================================ */
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px;
  border-radius: var(--r-pill); font-size: 11px; font-weight: 500;
  letter-spacing: 0.04em; text-transform: uppercase;
  background: rgba(255,255,255,0.06); color: var(--fg-1); border: 1px solid rgba(255,255,255,0.1);
}
.pill .icon { width: 12px; height: 12px; }
.pill--orange { background: rgba(255,91,20,0.12); color: var(--orange); border-color: rgba(255,91,20,0.45); }
.pill--yellow { background: rgba(255,199,0,0.12); color: var(--yellow); border-color: rgba(255,199,0,0.45); }
.pill--steel  { background: rgba(94,107,120,0.18); color: var(--steel-warm); border-color: rgba(154,160,166,0.35); }

/* ============================================================ Buttons ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; font-size: 13px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; font-family: var(--font-display); border-radius: var(--r-sm);
  white-space: nowrap; border: 1px solid transparent;
  transition: transform 120ms ease, filter 120ms ease, background 120ms ease, border-color 120ms ease;
}
.btn .icon { width: 16px; height: 16px; stroke-width: 2.2; }
.btn:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn:active { transform: translateY(0); }
.btn--sm { padding: 8px 14px; font-size: 12px; }
.btn--sm .icon { width: 14px; height: 14px; }
.btn--lg { padding: 16px 28px; font-size: 14px; }
.btn--lg .icon { width: 18px; height: 18px; }
.btn--block { width: 100%; }
.btn--primary { background: var(--yellow); color: var(--ink-0); border-color: var(--yellow); box-shadow: var(--shadow-yellow); }
.btn--secondary { background: transparent; color: var(--fg-1); border-color: var(--ink-5); }
.btn--ghost { background: transparent; color: var(--fg-2); }
.btn--yellow { background: var(--yellow); color: var(--ink-0); border-color: var(--yellow); }
.btn--line { background: var(--line); color: #fff; border-color: var(--line); box-shadow: 0 8px 28px rgba(6,199,85,0.35); }

/* ============================================================ Header ============================================================ */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(5,11,26,0.70);
  -webkit-backdrop-filter: blur(14px) saturate(140%); backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--ink-4);
  transition: background 200ms ease, border-color 200ms ease;
}
.site-header.is-scrolled { background: rgba(5,11,26,0.92); border-bottom-color: var(--ink-3); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding-block: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__mark {
  width: 44px; height: 44px; border-radius: var(--r-md); flex-shrink: 0;
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: inset 0 0 0 2px rgba(0,0,0,0.25);
}
.brand__name { display: block; font-family: var(--font-display); font-weight: 800; font-size: clamp(13px, 1.5vw, 16px); letter-spacing: 0.01em; color: var(--fg-1); line-height: 1.15; }
.brand__sub { display: block; font-size: 10px; color: var(--fg-3); letter-spacing: 0.18em; text-transform: uppercase; margin-top: 4px; }
.header-right { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; min-width: 0; }
.header-tagline { font-size: 12px; color: var(--fg-2); line-height: 1.35; text-align: right; max-width: 480px; }
.header-tagline .dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); margin-right: 8px; vertical-align: middle; }
.header-cta { display: flex; align-items: center; gap: 8px; }
.nav-toggle { width: 44px; height: 44px; display: none; align-items: center; justify-content: center; border-radius: var(--r-md); border: 1px solid var(--ink-4); color: var(--fg-1); }
.nav-toggle .icon { width: 20px; height: 20px; }

.mobile-drawer { display: none; background: var(--ink-1); border-top: 1px solid var(--ink-3); padding: 16px clamp(16px,4vw,40px) 24px; flex-direction: column; gap: 12px; }
.mobile-drawer.is-open { display: flex; }
.mobile-drawer__tagline { font-size: 12px; color: var(--fg-2); line-height: 1.45; padding-bottom: 8px; border-bottom: 1px solid var(--ink-3); }
.mobile-drawer__link { padding: 8px 0; font-size: 16px; font-weight: 500; color: var(--fg-1); border-bottom: 1px solid var(--ink-3); }
.mobile-drawer__cta { display: flex; gap: 8px; margin-top: 8px; }
.mobile-drawer__cta .btn { flex: 1; }

/* ============================================================ Hero ============================================================ */
.hero {
  position: relative; overflow: hidden;
  padding: calc(var(--header-h) + 44px) clamp(20px,4vw,56px) 60px;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(255,106,31,0.18) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 90%, rgba(44,79,177,0.18) 0%, transparent 55%),
    linear-gradient(180deg, var(--ink-1) 0%, var(--ink-0) 100%);
}
.hero__corner-h { position: absolute; top: 0; left: 0; width: 240px; height: 8px; opacity: 0.85; }
.hero__corner-v { position: absolute; top: 0; left: 0; width: 8px; height: 240px; opacity: 0.85; }
.hero__grid {
  max-width: var(--maxw); margin: 0 auto; position: relative;
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,420px); gap: 48px; align-items: center;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 14px; margin-bottom: 32px;
  background: rgba(255,106,31,0.12); border: 1px solid rgba(255,106,31,0.45); border-radius: var(--r-pill);
  font-size: 11px; font-weight: 600; color: var(--orange); letter-spacing: 0.18em; text-transform: uppercase;
}
.hero__eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); animation: pulse-dot 1.5s ease-in-out infinite; }
.hero__title { font-size: clamp(34px, 5.4vw, 76px); font-weight: 900; line-height: 1.0; letter-spacing: -0.02em; margin-bottom: 24px; }
.hero__title .grad { background: linear-gradient(180deg, var(--orange) 0%, var(--orange-deep) 100%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero__lead { font-size: clamp(16px, 1.6vw, 19px); line-height: 1.55; color: var(--fg-2); max-width: 540px; margin-bottom: 36px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 56px; }
.hero__stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink-4); padding-top: 24px; }
.stat { padding-right: 18px; display: flex; flex-direction: column; }
.stat__value { order: -1; } /* value shown above its label while keeping dt→dd source order */
.stat + .stat { border-left: 1px solid var(--ink-4); padding-left: 18px; }
.stat__value { font-family: var(--font-display); font-size: clamp(22px, 3vw, 36px); font-weight: 800; color: var(--fg-1); line-height: 1; margin-bottom: 6px; }
.stat__label { font-size: 11px; color: var(--fg-3); letter-spacing: 0.08em; text-transform: uppercase; }
.hero__media { position: relative; display: flex; justify-content: center; }
.hero__media::before { content: ""; position: absolute; inset: -40px; background: radial-gradient(circle, rgba(255,106,31,0.22) 0%, transparent 60%); filter: blur(40px); z-index: 0; }
.hero__media-inner { position: relative; z-index: 1; width: 100%; max-width: 380px; }
.sticky-note {
  position: absolute; bottom: -20px; right: -16px; z-index: 4; padding: 10px 14px;
  background: var(--yellow); color: #0A1226; border-radius: var(--r-md);
  font-family: var(--font-display); font-weight: 800; font-size: 13px; letter-spacing: 0.04em;
  transform: rotate(-4deg); box-shadow: var(--shadow-md); text-align: center;
}

/* Hero video (Drive iframe) */
.hero-video { position: relative; aspect-ratio: 9 / 16; background: var(--ink-0); border: 1px solid var(--ink-4); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.hero-video iframe, .hero-video__el { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; object-fit: cover; }
.hero-video__chrome {
  position: absolute; inset: 0 0 auto 0; z-index: 3; padding: 10px 14px;
  background: linear-gradient(180deg, rgba(10,18,38,0.85), transparent);
  display: flex; align-items: center; justify-content: space-between; pointer-events: none;
}
.hero-video__live { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 700; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-1); }
.hero-video__live .dot { width: 8px; height: 8px; border-radius: 50%; background: #FF3B5C; animation: pulse-dot 1.2s ease-in-out infinite; }
.hero-video__badge { padding: 3px 8px; background: rgba(0,0,0,0.5); border-radius: var(--r-sm); font-size: 10px; color: var(--fg-2); letter-spacing: 0.08em; text-transform: uppercase; }
.hero-video__mute {
  position: absolute; top: 44px; right: 12px; z-index: 5; width: 40px; height: 40px;
  background: rgba(10,18,38,0.85); border: 1px solid rgba(255,255,255,0.18); border-radius: 50%; color: var(--fg-1);
  display: inline-flex; align-items: center; justify-content: center;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.hero-video__hint {
  position: absolute; top: 44px; right: 60px; z-index: 5; padding: 8px 12px;
  background: rgba(255,106,31,0.95); color: #0A1226; border-radius: var(--r-pill);
  font-family: var(--font-display); font-weight: 700; font-size: 11px; letter-spacing: 0.06em;
  white-space: nowrap; box-shadow: 0 6px 16px rgba(0,0,0,0.4); pointer-events: none;
}
.hero-video__corner { position: absolute; top: 0; left: 0; width: 100px; height: 6px; z-index: 5; opacity: 0.95; pointer-events: none; }

.scroll-indicator { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--fg-3); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; }
.scroll-indicator__line { width: 1px; height: 32px; background: var(--ink-5); position: relative; overflow: hidden; }
.scroll-indicator__line::after { content: ""; position: absolute; top: 0; width: 100%; height: 16px; background: var(--orange); animation: scrollLine 2s ease-in-out infinite; }

/* ============================================================ Product grid ============================================================ */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.product-card {
  background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); overflow: hidden;
  display: flex; flex-direction: column; position: relative; cursor: pointer;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}
.product-card:hover { transform: translateY(-4px); border-color: var(--ink-5); box-shadow: var(--shadow-lg); }
/* Stretched-link: whole card is clickable via the title link, no nested <a><button> */
.product-card__link { color: inherit; }
.product-card__link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.product-card__title a:hover { color: var(--orange); }
.product-card__media { aspect-ratio: 4/3; position: relative; overflow: hidden; background: #0a0a0a; }
.card-art { position: absolute; inset: 0; z-index: 0; opacity: 0.15; pointer-events: none; }
.card-art svg { width: 100%; height: 100%; }
.product-card__index { position: absolute; top: 14px; left: 14px; z-index: 2; font-family: var(--font-display); font-size: 60px; font-weight: 900; line-height: 1; color: rgba(255,255,255,0.95); text-shadow: 0 2px 12px rgba(0,0,0,0.7); letter-spacing: -0.04em; pointer-events: none; }
.product-card__tag { position: absolute; top: 14px; right: 14px; z-index: 2; padding: 4px 10px; color: var(--ink-0); border-radius: var(--r-sm); font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; pointer-events: none; }
.product-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-card__title { font-size: 22px; font-weight: 700; margin-bottom: 6px; color: var(--fg-1); }
.product-card__desc { font-size: 13px; color: var(--fg-2); margin-bottom: 16px; line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 5; -webkit-box-orient: vertical; line-clamp: 5; overflow: hidden; }
.spec-mini { background: var(--ink-1); border-radius: var(--r-md); border: 1px solid var(--ink-3); padding: 12px; margin-bottom: 16px; display: grid; gap: 6px; }
.spec-mini__row { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; }
.spec-mini__row dt { color: var(--fg-3); }
.spec-mini__row dd { color: var(--fg-1); font-weight: 600; text-align: right; max-width: 60%; }
.product-card__foot { margin-top: auto; }

/* ============================================================ Carousel (progressive) ============================================================ */
.carousel { position: absolute; inset: 0; overflow: hidden; }
.carousel__art { position: absolute; inset: 0; opacity: 0.15; pointer-events: none; }
.carousel__slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 380ms ease; pointer-events: none; }
.carousel__slide:first-of-type { opacity: 1; }
.carousel.is-ready .carousel__slide { opacity: 0; }
.carousel.is-ready .carousel__slide.is-active { opacity: 1; }
.carousel__btn {
  position: absolute; top: 50%; transform: translateY(-50%); width: 36px; height: 36px; border-radius: 50%;
  background: rgba(10,18,38,0.65); border: 1px solid rgba(255,255,255,0.18); color: var(--fg-1);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  display: none; align-items: center; justify-content: center; z-index: 4;
}
.carousel__btn .icon { width: 16px; height: 16px; stroke-width: 2.2; }
.carousel.is-ready .carousel__btn { display: flex; }
.carousel__btn--prev { left: 10px; }
.carousel__btn--next { right: 10px; }
.carousel__dots { position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%); display: none; gap: 5px; z-index: 4; padding: 5px 9px; background: rgba(10,18,38,0.55); border-radius: var(--r-pill); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); pointer-events: none; }
.carousel.is-ready .carousel__dots { display: flex; }
/* 24px tap target (a11y) with a small visual bar via ::before */
.carousel__dot { width: 24px; height: 24px; padding: 0; border: none; background: transparent; position: relative; cursor: pointer; pointer-events: auto; }
.carousel__dot::before { content: ""; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 6px; height: 6px; border-radius: var(--r-pill); background: rgba(255,255,255,0.5); transition: width 200ms ease, background 200ms ease; }
.carousel__dot.is-active::before { width: 16px; background: var(--orange); }
.carousel__counter { position: absolute; top: 10px; right: 10px; z-index: 4; padding: 3px 8px; background: rgba(10,18,38,0.65); color: var(--fg-1); border-radius: var(--r-sm); font-size: 11px; font-weight: 600; letter-spacing: 0.08em; -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); pointer-events: none; display: none; }
.carousel.is-ready .carousel__counter { display: block; }

/* ============================================================ About ============================================================ */
.about { overflow: hidden; }
.about .blueprint-grid { background-image: linear-gradient(rgba(255,91,20,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,91,20,0.04) 1px, transparent 1px); background-size: 64px 64px; -webkit-mask-image: none; mask-image: none; }
.about__grid { max-width: var(--maxw); margin: 0 auto; padding-inline: clamp(16px, 4vw, 56px); position: relative; display: grid; grid-template-columns: minmax(0,420px) minmax(0,1fr); gap: 56px; align-items: start; }
.about__title { font-size: clamp(32px, 4vw, 52px); font-weight: 900; line-height: 1.05; letter-spacing: -0.015em; margin: 16px 0 22px; }
.about__body { font-size: 15px; color: var(--fg-2); line-height: 1.65; }
.about__body p { margin-bottom: 16px; }
.about__body strong { color: var(--fg-1); }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feature { padding: 24px; background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); position: relative; overflow: hidden; }
.feature__icon { width: 44px; height: 44px; border-radius: var(--r-md); background: rgba(255,91,20,0.12); border: 1px solid rgba(255,91,20,0.4); color: var(--orange); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.feature__icon .icon { width: 22px; height: 22px; }
.feature__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature__body { font-size: 13px; color: var(--fg-3); line-height: 1.5; }

.marquee { margin-top: 80px; padding: 20px 0; border-top: 1px solid var(--ink-3); border-bottom: 1px solid var(--ink-3); overflow: hidden; position: relative; }
.marquee__track { display: flex; gap: 56px; width: max-content; align-items: center; animation: marquee 30s linear infinite; font-family: var(--font-display); font-size: 22px; font-weight: 800; letter-spacing: 0.04em; }
.marquee__item { color: var(--fg-1); }
.marquee__item--alt { color: var(--yellow); }
.marquee__sep { color: var(--ink-5); }

/* ============================================================ FAQ ============================================================ */
/* FAQ — kept compact / low-key (content still feeds FAQPage JSON-LD) */
.faq-section { padding-block: clamp(40px, 6vw, 64px); }
.faq-section__head { margin-bottom: 22px; }
.faq-section__title { font-size: clamp(20px, 2.6vw, 27px); font-weight: 800; line-height: 1.2; margin-top: 10px; color: var(--fg-1); }
.faq__grid { max-width: 820px; }
.faq__item summary { padding: 16px 20px; font-size: 16px; }
.faq__answer { padding: 0 20px 18px; font-size: 14px; }
.faq__item { border: 1px solid var(--ink-3); border-radius: var(--r-lg); background: var(--ink-2); margin-bottom: 12px; overflow: hidden; }
.faq__item summary { list-style: none; cursor: pointer; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-family: var(--font-display); font-weight: 600; font-size: 17px; color: var(--fg-1); }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: ""; width: 12px; height: 12px; flex: none; border-right: 2px solid var(--orange); border-bottom: 2px solid var(--orange); transform: rotate(45deg); transition: transform 200ms ease; margin-top: -4px; }
.faq__item[open] summary::after { transform: rotate(-135deg); margin-top: 4px; }
.faq__item summary:hover { color: var(--orange); }
.faq__answer { padding: 0 24px 22px; color: var(--fg-2); font-size: 15px; line-height: 1.7; }

/* ============================================================ Contact ============================================================ */
.contact__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 48px; }
.contact__channels { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 40px; }
.channel-card { padding: 28px; background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); display: flex; flex-direction: column; gap: 16px; position: relative; overflow: hidden; transition: transform 200ms ease, border-color 200ms ease; }
.channel-card:hover { transform: translateY(-4px); border-color: var(--ink-5); }
.channel-card__glow { position: absolute; top: 0; right: 0; width: 80px; height: 80px; opacity: 0.18; pointer-events: none; }
.channel-card__icon { width: 52px; height: 52px; border-radius: var(--r-md); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.channel-card__icon .icon { width: 26px; height: 26px; }
.channel-card__icon--plain { border: 1px solid; }
.channel-card__label { display: block; font-size: 10px; color: var(--fg-3); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 6px; }
.channel-card__value { display: block; font-family: var(--font-display); font-size: 22px; font-weight: 700; margin-bottom: 4px; color: var(--fg-1); word-break: break-word; }
.channel-card__sub { display: block; font-size: 12px; color: var(--fg-3); }
.channel-card__cta { margin-top: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 13px; font-weight: 600; letter-spacing: 0.04em; }
.channel-card__cta .icon { width: 14px; height: 14px; }

.contact__bottom { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 24px; align-items: stretch; }
.qr-card { background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); padding: 24px; display: flex; flex-direction: column; align-items: center; position: relative; overflow: hidden; }
.qr-card__bar { position: absolute; inset: 0 0 auto 0; height: 6px; background: var(--line); }
.qr-card__head { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--line); font-family: var(--font-display); font-weight: 700; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; }
.qr-card__img { padding: 12px; background: #fff; border-radius: var(--r-md); box-shadow: var(--shadow-md); }
.qr-card__img img { width: 220px; height: 220px; }
.qr-card__id { margin-top: 2px; font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: 0.04em; }
.qr-card__oa { margin-top: 12px; font-size: 11px; color: var(--fg-3); letter-spacing: 0.12em; text-transform: uppercase; }
.qr-card__add { margin-top: 10px; }

.map-card { background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); overflow: hidden; display: flex; flex-direction: column; min-height: 360px; }
.map-card__head { padding: 18px 24px; border-bottom: 1px solid var(--ink-3); display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.map-card__head-l { display: flex; align-items: center; gap: 10px; }
.map-card__pin { width: 36px; height: 36px; border-radius: var(--r-md); background: rgba(255,106,31,0.18); color: var(--orange); border: 1px solid rgba(255,106,31,0.45); display: flex; align-items: center; justify-content: center; flex: none; }
.map-card__pin .icon { width: 18px; height: 18px; }
.map-card__label { display: block; font-size: 10px; color: var(--fg-3); letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 2px; }
.map-card__name { display: block; font-family: var(--font-display); font-weight: 700; font-size: 17px; line-height: 1.25; }
.map-card__addr { display: block; font-size: 12px; color: var(--fg-3); margin-top: 2px; }
.map-card__frame { flex: 1; min-height: 280px; position: relative; background: var(--ink-1); }
.map-card__frame iframe { width: 100%; height: 100%; min-height: 280px; border: 0; filter: invert(0.92) hue-rotate(180deg) saturate(0.6); }

/* ============================================================ Footer ============================================================ */
.site-footer { border-top: 1px solid var(--ink-3); background: var(--ink-0); padding: 48px clamp(16px,4vw,40px) 32px; margin-top: 80px; }
.site-footer__grid { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 40px; }
.site-footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.site-footer__brand .brand__mark { width: 36px; height: 36px; }
.site-footer__brand-name { font-family: var(--font-display); font-weight: 800; font-size: 18px; letter-spacing: 0.02em; }
.site-footer__about { font-size: 13px; color: var(--fg-3); line-height: 1.7; max-width: 280px; }
.site-footer h2 { font-size: 11px; letter-spacing: 0.18em; color: var(--fg-3); text-transform: uppercase; margin-bottom: 14px; font-weight: 800; }
.site-footer__link, .site-footer__line { display: block; font-size: 13px; color: var(--fg-2); margin-bottom: 8px; }
a.site-footer__link:hover { color: var(--orange); }
.site-footer__bottom { max-width: var(--maxw); margin: 32px auto 0; padding-top: 20px; border-top: 1px solid var(--ink-3); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--fg-3); letter-spacing: 0.06em; }

/* ============================================================ Floating contact ============================================================ */
.floating-contact { position: fixed; bottom: 20px; right: 20px; z-index: 90; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; pointer-events: none; }
.floating-contact__item { display: flex; align-items: center; gap: 10px; transform: translateY(20px); opacity: 0; pointer-events: none; transition: transform 280ms cubic-bezier(0.34,1.5,0.64,1), opacity 240ms ease; }
.floating-contact.is-open .floating-contact__item { transform: translateY(0); opacity: 1; pointer-events: auto; }
.floating-contact.is-open .floating-contact__item:nth-child(1) { transition-delay: 0ms; }
.floating-contact.is-open .floating-contact__item:nth-child(2) { transition-delay: 50ms; }
.floating-contact.is-open .floating-contact__item:nth-child(3) { transition-delay: 100ms; }
.floating-contact.is-open .floating-contact__item:nth-child(4) { transition-delay: 150ms; }
.floating-contact__label { padding: 8px 16px; background: rgba(75,85,100,0.95); color: #fff; border-radius: var(--r-pill); font-family: var(--font-display); font-size: 13px; font-weight: 600; letter-spacing: 0.02em; box-shadow: 0 4px 14px rgba(0,0,0,0.3); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); white-space: nowrap; }
.brand-logo { flex: none; }
.floating-contact__item .brand-logo { border-radius: 8px; box-shadow: 0 6px 14px rgba(0,0,0,0.35); }
.floating-contact__logo--phone { width: 40px; height: 40px; border-radius: 50%; background: var(--orange); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 14px rgba(255,106,31,0.4); flex: none; }
.floating-contact__logo--phone .icon { width: 20px; height: 20px; stroke-width: 2.4; }
.fab { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--orange) 0%, var(--orange-deep) 100%); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 22px rgba(255,106,31,0.45); pointer-events: auto; transition: background 220ms ease, box-shadow 220ms ease; position: relative; z-index: 2; }
.fab .icon { width: 26px; height: 26px; }
.fab .icon-close { display: none; }
.floating-contact.is-open .fab { background: rgba(140,140,140,0.9); box-shadow: 0 4px 14px rgba(0,0,0,0.3); }
.floating-contact.is-open .fab .icon-chat { display: none; }
.floating-contact.is-open .fab .icon-close { display: block; }
.fab-pulse { position: absolute; bottom: 0; right: 0; width: 56px; height: 56px; border-radius: 50%; border: 2px solid var(--orange); animation: fcPulse 2s ease-out infinite; pointer-events: none; }
.floating-contact.is-open .fab-pulse { display: none; }

/* ============================================================ Breadcrumb ============================================================ */
.breadcrumb { padding-top: calc(var(--header-h) + 28px); }
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; color: var(--fg-3); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb li[aria-current] { color: var(--fg-1); }
.breadcrumb .sep { color: var(--ink-5); }

/* ============================================================ Product detail (PDP) ============================================================ */
.pdp { padding-bottom: 80px; background: var(--ink-1); min-height: 100vh; }
.pdp__back { display: inline-flex; align-items: center; gap: 8px; color: var(--fg-3); font-size: 13px; margin: 16px 0 24px; }
.pdp__back .icon { width: 16px; height: 16px; }
.pdp__back:hover { color: var(--orange); }
.pdp__grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 48px; align-items: start; }

.gallery { display: flex; flex-direction: column; gap: 14px; }
.gallery__main { position: relative; aspect-ratio: 1/1; background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-lg); overflow: hidden; }
.gallery__zoom-btn { position: absolute; inset: 0; z-index: 3; background: transparent; border: none; padding: 0; cursor: zoom-in; }
.gallery__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 250ms ease; }
.gallery__img:first-of-type { opacity: 1; }
.gallery.is-ready .gallery__img { opacity: 0; }
.gallery.is-ready .gallery__img.is-active { opacity: 1; }
.gallery__zoom { position: absolute; bottom: 14px; right: 14px; padding: 6px 10px; background: rgba(10,18,38,0.7); color: var(--fg-1); border-radius: var(--r-sm); font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 6px; -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); pointer-events: none; }
.gallery__zoom .icon { width: 12px; height: 12px; }
.gallery__thumbs { display: grid; grid-template-columns: repeat(auto-fit, minmax(0, 1fr)); gap: 8px; }
.gallery__thumb { aspect-ratio: 1/1; background: var(--ink-2); border: 2px solid var(--ink-3); border-radius: var(--r-md); overflow: hidden; opacity: 0.7; transition: opacity 160ms ease, border-color 160ms ease; }
.gallery__thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery__thumb.is-active { opacity: 1; border-color: var(--orange); }

.pdp__tag { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; color: var(--ink-0); border-radius: var(--r-sm); font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 18px; }
.pdp__title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.1; letter-spacing: -0.01em; margin-bottom: 14px; color: var(--fg-1); }
.pdp__desc { font-size: 15px; color: var(--fg-2); line-height: 1.7; margin-bottom: 28px; }

.size-options { margin-bottom: 24px; }
.size-options__label { font-size: 13px; color: var(--fg-2); margin-bottom: 10px; }
.size-options__label strong { color: var(--fg-1); font-weight: 600; }
.size-options__current { color: var(--orange); font-weight: 600; }
.size-options__list { display: flex; flex-wrap: wrap; gap: 8px; }
.size-option { padding: 9px 16px; background: var(--ink-2); border: 1.5px solid var(--ink-4); color: var(--fg-1); border-radius: var(--r-md); font-family: var(--font-display); font-size: 14px; font-weight: 600; transition: background 160ms ease, border-color 160ms ease, color 160ms ease; }
.size-option:hover { border-color: var(--ink-5); }
.size-option.is-active { background: var(--yellow); border-color: var(--yellow); color: var(--ink-0); }

.spec-table { margin-bottom: 28px; background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-md); padding: 6px 18px; }
.spec-table__row { display: grid; grid-template-columns: minmax(0,130px) minmax(0,1fr); gap: 12px; padding: 10px 0; font-size: 13px; align-items: start; }
.spec-table__row + .spec-table__row { border-top: 1px solid var(--ink-3); }
.spec-table__row dt { color: var(--fg-3); }
.spec-table__row dd { color: var(--fg-1); font-weight: 500; }

.pdp__cta { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.pdp__cta-line { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 24px; background: var(--line); color: #fff; border-radius: var(--r-md); font-family: var(--font-display); font-size: 16px; font-weight: 700; letter-spacing: 0.04em; box-shadow: 0 10px 28px rgba(6,199,85,0.32); transition: transform 120ms ease; }
.pdp__cta-line:hover { transform: translateY(-2px); }
.pdp__cta-line .icon { width: 20px; height: 20px; stroke-width: 2.2; }
.pdp__cta-tel { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 24px; background: transparent; border: 1.5px solid var(--ink-5); color: var(--fg-1); border-radius: var(--r-md); font-family: var(--font-display); font-size: 15px; font-weight: 600; letter-spacing: 0.04em; }
.pdp__cta-tel .icon { width: 18px; height: 18px; stroke-width: 2.2; }
.pdp__share { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--fg-3); padding-top: 4px; }

.other-products { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--ink-3); }
.other-products__head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 14px; }
.other-products__head h2 { font-family: var(--font-display); font-size: 13px; font-weight: 700; color: var(--fg-3); letter-spacing: 0.16em; text-transform: uppercase; }
.other-products__all { font-size: 12px; color: var(--orange); display: inline-flex; align-items: center; gap: 4px; }
.other-products__all .icon { width: 12px; height: 12px; }
.other-products__grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.other-product { background: var(--ink-2); border: 1px solid var(--ink-3); border-radius: var(--r-md); overflow: hidden; display: flex; align-items: center; gap: 12px; padding: 8px; transition: transform 200ms ease, border-color 200ms ease; }
.other-product:hover { transform: translateY(-3px); border-color: var(--ink-5); }
.other-product__thumb { width: 56px; height: 56px; flex: none; border-radius: var(--r-sm); overflow: hidden; background: #0a0a0a; }
.other-product__thumb img { width: 100%; height: 100%; object-fit: cover; }
.other-product__name { font-family: var(--font-display); font-size: 13px; font-weight: 700; color: var(--fg-1); line-height: 1.2; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.other-product__en { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================ Lightbox ============================================================ */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(2,6,16,0.95); display: flex; flex-direction: column; padding: 60px clamp(20px,6vw,80px); }
.lightbox[hidden] { display: none; }
.lightbox__close { position: absolute; top: 18px; right: 18px; z-index: 4; width: 44px; height: 44px; border-radius: var(--r-md); background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); color: var(--fg-1); display: flex; align-items: center; justify-content: center; }
.lightbox__close .icon { width: 20px; height: 20px; stroke-width: 2.4; }
.lightbox__stage { flex: 1; display: flex; align-items: center; justify-content: center; position: relative; min-height: 0; }
.lightbox__img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: var(--r-md); box-shadow: 0 30px 80px rgba(0,0,0,0.6); }
.lightbox__nav { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; border-radius: 50%; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.18); color: var(--fg-1); display: flex; align-items: center; justify-content: center; }
.lightbox__nav .icon { width: 22px; height: 22px; stroke-width: 2.4; }
.lightbox__nav--prev { left: -8px; }
.lightbox__nav--next { right: -8px; }
.lightbox__footer { margin-top: 16px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.lightbox__caption { font-family: var(--font-display); font-size: 16px; font-weight: 600; color: var(--fg-1); letter-spacing: 0.04em; }
.lightbox__thumbs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.lightbox__thumb { width: 56px; height: 56px; border-radius: var(--r-sm); overflow: hidden; border: 2px solid transparent; opacity: 0.55; transition: opacity 160ms ease; }
.lightbox__thumb img { width: 100%; height: 100%; object-fit: cover; }
.lightbox__thumb.is-active { opacity: 1; border-color: var(--orange); }
.lightbox__meta { font-size: 11px; color: var(--fg-3); letter-spacing: 0.12em; text-transform: uppercase; }

/* ============================================================ Animations ============================================================ */
@keyframes pulse-dot { 0%,100% { opacity: 0.4; } 50% { opacity: 1; } }
@keyframes marquee { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }
@keyframes scrollLine { 0% { top: -16px; } 100% { top: 32px; } }
@keyframes fcPulse { 0% { transform: scale(1); opacity: 0.6; } 100% { transform: scale(1.6); opacity: 0; } }
/* MeshArt textures behind product photos */
@keyframes ma-pan { 0%,100% { transform: translate(0,0) scale(1.02); } 50% { transform: translate(-8px,-40px) scale(1.06); } }
@keyframes ma-scroll { 0% { transform: translateY(0); } 100% { transform: translateY(-44px); } }
@keyframes ma-drift { 0%,100% { transform: translateX(0); } 50% { transform: translateX(-12px); } }

/* ============================================================ Responsive ============================================================ */
@media (max-width: 900px) {
  .header-cta, .header-tagline { display: none; }
  .nav-toggle { display: flex; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  /* mobile: keep text first (top), clip below — matches requested order */
  .about__grid { grid-template-columns: 1fr; }
  .pdp__grid { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 820px) {
  .contact__bottom { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .feature-grid { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 20px 0; }
}
@media (max-width: 520px) {
  .other-products__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}