/* =========================================================
   和季康 - 碳化钨 & 氧化锆喷涂营销型网站 v2
   强调：视觉层次分明、色彩分区清晰、卡片立体感强
   ========================================================= */

/* --- Design Tokens --- */
:root {
  --ink: #0a1020;
  --navy: #071326;
  --navy-mid: #0f1f3d;
  --steel: #4a5568;
  --muted: #94a3b8;
  --paper: #f7f4ee;
  --paper-2: #eef0f4;
  --paper-3: #e4e8f0;
  --white: #ffffff;
  --gold: #c8a15a;
  --gold-2: #e3c884;
  --gold-light: #fef3c7;
  --teal: #0d9488;
  --teal-light: #ccfbf1;
  --teal-dark: #115e59;
  --red: #dc2626;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 24px 64px rgba(0,0,0,0.14);
  --shadow-xl: 0 40px 80px rgba(0,0,0,0.18);
  --font-cn: "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  --font-en: Inter, Arial, sans-serif;
  --header-h: 72px;
  /* 区块背景色定义 */
  --bg-hero: var(--navy);
  --bg-white: #ffffff;
  --bg-light: #f7f4ee;
  --bg-soft: #eef0f4;
  --bg-dark: #071326;
  --bg-dark-2: #0f1f3d;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-cn);
  color: var(--ink);
  background: var(--bg-light);
  line-height: 1.72;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
ul { list-style: none; }
button, input, textarea, select { font: inherit; }
::selection { background: rgba(200,161,90,.25); }

/* --- Layout --- */
.container { width: min(1200px, calc(100% - 48px)); margin: auto; }

/* 区块背景色 */
.section {
  padding: 100px 0;
  position: relative;
  background: var(--bg-white);
}
.section.soft { background: var(--bg-soft); }
.section.dark { background: var(--bg-dark); }
.section.dark-2 { background: var(--bg-dark-2); }
.section.hero-bg { background: var(--bg-hero); }
.section.compact { padding: 72px 0; }

/* 区块过渡装饰条 */
.section::before {
  content: "";
  display: block;
  height: 0;
}

/* 分隔线 */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(10,16,32,.08) 20%, rgba(10,16,32,.08) 80%, transparent 100%);
  border: none;
  margin: 0;
}

/* Section header */
.section-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 56px;
}
.section-head.center {
  display: block;
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}
.section-head.center .lead { margin: 14px auto 0; }

/* --- Typography --- */
h1,h2,h3,h4 { line-height: 1.2; letter-spacing: -0.02em; }
.display { font-size: clamp(38px, 7vw, 80px); font-weight: 900; color: #fff; line-height: 1; }
.display .gold, .gold { color: var(--gold-2); }
.h1 { font-size: clamp(34px, 5vw, 60px); font-weight: 900; }
.h2 { font-size: clamp(26px, 3.5vw, 46px); font-weight: 900; }
.h3 { font-size: clamp(20px, 2.5vw, 28px); font-weight: 850; }
.h4 { font-size: 18px; font-weight: 850; }
.lead { font-size: 17px; color: #cbd5e1; max-width: 640px; line-height: 1.75; }
.text { color: var(--steel); font-size: 15px; line-height: 1.8; }

/* Eyebrow 标签 */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  flex-shrink: 0;
}
.eyebrow.dark { color: var(--gold-2); }
.eyebrow.dark::before { background: linear-gradient(90deg, var(--gold-2), transparent); }
.eyebrow.teal { color: #5eead4; }
.eyebrow.teal::before { background: linear-gradient(90deg, #5eead4, transparent); }

/* --- Buttons --- */
.btns { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  font-size: 14px;
  transition: all 0.25s ease;
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  color: #0a0a0a;
  box-shadow: 0 4px 16px rgba(200,161,90,.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,161,90,.4);
  filter: brightness(1.05);
}
.btn-dark {
  background: #0f1f3d;
  color: #fff;
  border-color: rgba(255,255,255,.15);
}
.btn-dark:hover { background: #1a3060; transform: translateY(-2px); }
.btn-light {
  background: rgba(255,255,255,.10);
  border-color: rgba(255,255,255,.20);
  color: #fff;
  backdrop-filter: blur(8px);
}
.btn-light:hover { background: rgba(255,255,255,.18); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(200,161,90,.5);
  color: var(--gold);
}
.btn-outline:hover { background: rgba(200,161,90,.08); border-color: var(--gold); transform: translateY(-2px); }
.btn-outline-dark {
  background: transparent;
  border: 1.5px solid rgba(10,16,32,.2);
  color: var(--ink);
}
.btn-outline-dark:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-teal {
  background: var(--teal);
  color: #fff;
  box-shadow: 0 4px 16px rgba(13,148,136,.25);
}
.btn-teal:hover { background: var(--teal-dark); transform: translateY(-2px); }

/* --- Grids --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }

/* =========================================================
   TOPBAR
   ========================================================= */
.topbar {
  background: #060e1c;
  color: #9ca3af;
  font-size: 12.5px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 36px;
}
.topbar strong { color: var(--gold-2); font-weight: 800; }
.topbar-links { display: flex; gap: 20px; white-space: nowrap; }
.topbar-links a:hover { color: #fff; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(247,244,238,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(10,16,32,.08);
  box-shadow: 0 2px 16px rgba(0,0,0,.06);
}
.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--gold-2), var(--gold) 50%, #7a5a28 100%);
  position: relative;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 5px rgba(255,255,255,.3), 0 2px 8px rgba(200,161,90,.3);
}
.brand-mark::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid rgba(10,16,32,.7);
  border-radius: 50%;
}
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 19px;
  background: #0a1020;
  border-radius: 50%;
}
.brand-text { line-height: 1.15; min-width: 0; }
.brand-title { font-weight: 900; font-size: 14px; letter-spacing: -0.03em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.brand-sub { font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); font-family: var(--font-en); margin-top: 3px; }
.main-nav { display: flex; gap: 1px; align-items: center; flex-shrink: 0; }
.main-nav a {
  padding: 26px 9px;
  font-size: 13px;
  font-weight: 800;
  color: #374151;
  position: relative;
  white-space: nowrap;
  transition: color 0.2s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  bottom: 18px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform 0.25s ease;
  transform-origin: left;
  border-radius: 2px;
}
.main-nav a:hover, .main-nav a.active { color: #000; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }
.header-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.phone-pill {
  display: flex;
  flex-direction: column;
  background: var(--teal-light);
  border: 1px solid rgba(13,148,136,.2);
  padding: 5px 12px;
  border-radius: 10px;
  line-height: 1.2;
}
.phone-pill small { font-size: 10px; color: var(--teal); font-weight: 600; }
.phone-pill b { font-size: 15px; color: var(--teal); font-weight: 900; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(10,16,32,.12);
  border-radius: 10px;
  background: #fff;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--ink); transition: 0.25s; border-radius: 1px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO CAROUSEL
   ========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  height: min(88vh, 680px);
  min-height: 520px;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,19,38,.55) 0%, rgba(7,19,38,.28) 50%, rgba(7,19,38,.6) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 80% 20%, rgba(200,161,90,.12) 0%, transparent 38%),
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
  z-index: 1;
  pointer-events: none;
}

.hero-carousel { position: relative; height: 100%; }
.hero-slide {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--navy);
  opacity: 0;
  transition: opacity 0.7s ease;
}
.hero-slide:first-child { opacity: 1; }
.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 10s ease;
}
.hero-slide:hover .hero-slide-bg { transform: scale(1.05); }

.hero-slide-content {
  position: relative;
  z-index: 5;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 100px 0 72px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(200,161,90,.15);
  border: 1px solid rgba(200,161,90,.35);
  color: var(--gold-2);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  width: fit-content;
  backdrop-filter: blur(8px);
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-2);
  animation: blink 1.6s ease infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-slide-content h1 {
  font-size: clamp(34px, 6vw, 72px);
  font-weight: 900;
  color: #fff;
  line-height: 1.08;
  margin-bottom: 16px;
}
.hero-slide-content h1 .gold { color: var(--gold-2); }
.hero-slide-content p {
  font-size: clamp(14px, 1.8vw, 17px);
  color: rgba(255,255,255,.7);
  max-width: 560px;
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-tag {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid;
}
.hero-tag-teal { background: rgba(13,148,136,.18); border-color: rgba(13,148,136,.4); color: #5eead4; }
.hero-tag-gold { background: rgba(200,161,90,.15); border-color: rgba(200,161,90,.35); color: var(--gold-2); }

/* Carousel controls */
.carousel-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 20;
}
.carousel-dot {
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,.3);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}
.carousel-dot.active { background: var(--gold-2); width: 44px; }
.carousel-dot:hover { background: rgba(255,255,255,.6); }
.carousel-arrows {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 20;
  pointer-events: none;
}
.carousel-arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(7,19,38,.65);
  border: 1px solid rgba(255,255,255,.18);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  pointer-events: all;
  transition: 0.25s ease;
  backdrop-filter: blur(8px);
  font-size: 22px;
  line-height: 1;
}
.carousel-arrow:hover { background: rgba(200,161,90,.3); border-color: var(--gold); }

/* Hero stat bar */
.hero-stat-bar {
  background: rgba(6,14,28,.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,.07);
  padding: 24px 0;
  position: relative;
  z-index: 5;
}
.hero-stats { display: grid; grid-template-columns: repeat(4,1fr); }
.hero-stat {
  padding: 0 28px;
  border-right: 1px solid rgba(255,255,255,.08);
  text-align: center;
}
.hero-stat:first-child { padding-left: 0; }
.hero-stat:last-child { border-right: none; }
.hero-stat b { font-family: var(--font-en); font-size: 34px; color: var(--gold-2); line-height: 1; display: block; }
.hero-stat span { display: block; color: rgba(255,255,255,.5); font-size: 12px; margin-top: 6px; font-weight: 600; }
.hero-stat span.highlight { color: #5eead4; }

/* =========================================================
   METRIC STRIP — 悬浮于下方section上方，有明显层次
   ========================================================= */
.metric-strip-wrap {
  position: relative;
  z-index: 10;
  padding: 40px 0 0;
}
.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(10,16,32,.06);
  background: #fff;
  border-top: 3px solid var(--gold);
  /* 微上浮，与hero stat bar有轻微交叠 */
  margin-top: -24px;
}
.metric {
  padding: 28px 24px;
  border-right: 1px solid rgba(10,16,32,.07);
  position: relative;
  background: #fff;
  transition: background 0.2s;
}
.metric:last-child { border-right: none; }
.metric:hover { background: #fefefe; }
.metric::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-2), transparent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.metric:hover::after { transform: scaleX(1); }
.metric-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gold-light);
  display: grid;
  place-items: center;
  margin-bottom: 12px;
  font-size: 18px;
}
.metric b { font-family: var(--font-en); font-size: 34px; color: var(--ink); font-weight: 900; display: block; line-height: 1; }
.metric span { display: block; color: var(--steel); font-size: 13px; font-weight: 700; margin-top: 4px; }

/* =========================================================
   ABOUT SECTION
   ========================================================= */
.about-section { background: var(--bg-light); }
.split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 72px;
  align-items: center;
}
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }

.feature-list { display: grid; gap: 14px; margin-top: 28px; }
.feature-item {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid rgba(10,16,32,.07);
  border-radius: 14px;
  transition: all 0.25s ease;
}
.feature-item:hover {
  transform: translateX(6px);
  border-color: rgba(200,161,90,.35);
  box-shadow: var(--shadow-sm);
}
.num-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  display: grid;
  place-items: center;
  font-family: var(--font-en);
  font-weight: 900;
  color: #111;
  flex-shrink: 0;
  font-size: 15px;
  box-shadow: 0 2px 8px rgba(200,161,90,.25);
}
.feature-item h3 { font-size: 16px; font-weight: 900; margin-bottom: 5px; }
.feature-item p { font-size: 13px; color: var(--steel); line-height: 1.65; }

.visual-block {
  min-height: 460px;
  border-radius: 24px;
  background: linear-gradient(145deg, #0d1e38, #071326);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.08);
}
.visual-block::before {
  content: "";
  position: absolute;
  inset: 36px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,.09);
  background: radial-gradient(circle at 28% 28%, rgba(227,200,132,.18), transparent 35%);
}
.visual-block::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  top: 54%;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, var(--gold-2), transparent);
  box-shadow: 0 0 28px rgba(227,200,132,.6);
}
.floating-spec {
  position: absolute;
  padding: 16px 20px;
  background: rgba(255,255,255,.96);
  border-radius: 16px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(10,16,32,.06);
}
.floating-spec .badge { display: block; font-size: 10px; font-weight: 800; color: var(--gold); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px; }
.floating-spec.one { left: 24px; top: 28px; }
.floating-spec.two { right: 24px; bottom: 28px; }
.floating-spec b { display: block; font-size: 24px; font-weight: 900; color: var(--ink); line-height: 1; }
.floating-spec span { display: block; font-size: 11px; color: var(--steel); margin-top: 3px; }

/* =========================================================
   SERVICE CARDS (dark bg)
   ========================================================= */
/* Alias for backward compat */
.dark-band { background: linear-gradient(180deg, #071326 0%, #0f1f3d 50%, #071326 100%); color: #fff; position: relative; overflow: hidden; }
.dark-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.dark-band .text, .dark-band .muted { color: #a8b8cc; }
.dark-band .eyebrow { color: var(--gold-2); }
.dark-band .eyebrow::before { background: linear-gradient(90deg, var(--gold-2), transparent); }
.dark-section {
  background: linear-gradient(180deg, #071326 0%, #0f1f3d 50%, #071326 100%);
  background: linear-gradient(180deg, #071326 0%, #0f1f3d 50%, #071326 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.dark-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.dark-section .text, .dark-section .muted { color: #a8b8cc; }
.dark-section .eyebrow { color: var(--gold-2); }
.dark-section .eyebrow::before { background: linear-gradient(90deg, var(--gold-2), transparent); }

.service-card {
  padding: 32px 26px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  min-height: 100%;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.09);
  border-color: rgba(200,161,90,.45);
  box-shadow: 0 20px 48px rgba(0,0,0,.3);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card .icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(200,161,90,.12);
  border: 1px solid rgba(200,161,90,.2);
  color: var(--gold-2);
  display: grid;
  place-items: center;
  font-size: 22px;
  margin-bottom: 20px;
  font-weight: 900;
}
.service-card h3 { font-size: 20px; font-weight: 900; margin-bottom: 12px; color: #fff; }
.service-card p { color: #a8b8cc; font-size: 14px; line-height: 1.75; }
.service-card .tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.tag {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(200,161,90,.12);
  border: 1px solid rgba(200,161,90,.25);
  color: var(--gold-2);
  font-size: 11px;
  font-weight: 800;
}

/* =========================================================
   PRODUCT CARDS
   ========================================================= */
.product-card {
  background: #fff;
  border-radius: 18px;
  border: 1px solid rgba(10,16,32,.08);
  overflow: hidden;
  transition: all 0.28s ease;
  box-shadow: var(--shadow-sm);
}
.product-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(200,161,90,.3);
}
.product-image {
  height: 210px;
  background: #e8e1d2;
  position: relative;
  overflow: hidden;
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-image::before {
  content: "";
  position: absolute;
  inset: 22px;
  border-radius: 16px;
  border: 1px solid rgba(10,16,32,.1);
  background: radial-gradient(circle at 28% 28%, rgba(200,161,90,.3), transparent 40%);
  z-index: 1;
}
.product-image::after {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  top: 50%;
  height: 7px;
  background: linear-gradient(90deg, transparent, var(--gold-2), #fff, var(--gold-2), transparent);
  filter: blur(0.5px);
  box-shadow: 0 0 24px rgba(200,161,90,.6);
  z-index: 1;
}
.product-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 10px;
  background: var(--teal);
  color: #fff;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 900;
}
.product-badge.gold { background: var(--gold); color: #111; }
.product-body { padding: 24px; }
.product-body h3 { font-size: 19px; font-weight: 900; margin-bottom: 9px; }
.product-body p { color: var(--steel); font-size: 13px; line-height: 1.75; }
.product-meta { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 14px; }
.product-meta span { padding: 4px 9px; background: var(--gold-light); border-radius: 999px; color: #856331; font-size: 11px; font-weight: 800; }
.more { display: inline-flex; align-items: center; gap: 5px; margin-top: 14px; color: var(--gold); font-weight: 900; font-size: 13px; transition: gap 0.2s; }
.more:hover { gap: 9px; color: #a67c3d; }

/* =========================================================
   CASE CARDS
   ========================================================= */
.case-card {
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(10,16,32,.08);
  transition: all 0.28s ease;
  box-shadow: var(--shadow-sm);
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-media {
  height: 220px;
  background: #13213a;
  position: relative;
  overflow: hidden;
}
.case-media img { width: 100%; height: 100%; object-fit: cover; }
.case-media::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  background: radial-gradient(circle at 70% 38%, rgba(227,200,132,.18), transparent 35%);
  z-index: 1;
}
.case-body { padding: 24px; }
.case-labels { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 11px; }
.case-body h3 { font-size: 19px; font-weight: 900; margin-bottom: 9px; }
.case-body p { color: var(--steel); font-size: 13px; }
.case-result { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 16px; }
.case-result > div { padding: 12px; background: #faf5ec; border-radius: 12px; text-align: center; border: 1px solid rgba(200,161,90,.12); }
.case-result b { display: block; color: var(--gold); font-size: 20px; font-weight: 900; }
.case-result span { font-size: 11px; color: var(--steel); font-weight: 700; }

/* =========================================================
   PROCESS STEPS
   ========================================================= */
.process-section { background: var(--bg-soft); }
.process { counter-reset: step; }
.process-item {
  position: relative;
  padding: 28px 24px;
  background: #fff;
  border-radius: 18px;
  border: 1px solid rgba(10,16,32,.07);
  min-height: 100%;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}
.process-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.process-item::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 900;
  color: rgba(200,161,90,.2);
  display: block;
  margin-bottom: 8px;
}
.process-item h3 { font-size: 18px; font-weight: 900; margin-bottom: 9px; }
.process-item p { color: var(--steel); font-size: 13px; }

/* =========================================================
   COATING COMPARE
   ========================================================= */
.compare-section { background: var(--bg-light); }
.coating-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.compare-card {
  padding: 36px;
  border-radius: 20px;
  border: 2px solid;
  transition: all 0.25s ease;
}
.compare-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.compare-card.wc {
  background: linear-gradient(145deg, #fffdf5, #fff8ee);
  border-color: rgba(200,161,90,.35);
}
.compare-card.wc:hover { box-shadow: 0 20px 48px rgba(200,161,90,.18); }
.compare-card.zro2 {
  background: linear-gradient(145deg, #f5fffe, #f0fdfa);
  border-color: rgba(13,148,136,.3);
}
.compare-card.zro2:hover { box-shadow: 0 20px 48px rgba(13,148,136,.15); }
.compare-card .tag-line { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.compare-card .tag-line .tag {
  font-size: 12px;
  font-weight: 900;
  padding: 5px 12px;
  border-radius: 999px;
}
.compare-card h3 { font-size: 22px; font-weight: 900; margin-bottom: 10px; }
.compare-card p { color: var(--steel); font-size: 14px; margin-bottom: 18px; line-height: 1.7; }
.compare-list { display: grid; gap: 10px; }
.compare-list li { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--steel); }
.compare-list li .icon-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 900;
}
.wc .icon-check { background: rgba(200,161,90,.15); color: var(--gold); }
.zro2 .icon-check { background: rgba(13,148,136,.12); color: var(--teal); }

/* =========================================================
   FAQ
   ========================================================= */
.faq-section { background: var(--bg-white); }
.split-col { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
.faq-list { display: grid; gap: 10px; }
.faq-item {
  background: #fff;
  border: 1px solid rgba(10,16,32,.1);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.25s;
}
.faq-item:hover { border-color: rgba(200,161,90,.3); }
.faq-item.open { border-color: rgba(200,161,90,.4); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font-weight: 800;
  font-size: 15px;
  gap: 16px;
  user-select: none;
}
.faq-question .icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gold-light);
  color: var(--gold);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: all 0.25s ease;
  font-size: 13px;
}
.faq-item.open .faq-question .icon { transform: rotate(45deg); background: var(--gold); color: #fff; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-item.open .faq-answer { max-height: 320px; }
.faq-answer-inner { padding: 0 22px 18px; color: var(--steel); font-size: 14px; line-height: 1.8; }

/* =========================================================
   CTA SECTION
   ========================================================= */
.cta-section { background: var(--bg-soft); }
.cta {
  background: linear-gradient(135deg, #071326 0%, #0f2040 50%, #071326 100%);
  color: #fff;
  border-radius: 24px;
  padding: 60px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow-lg);
}
.cta::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200,161,90,.12), transparent 70%);
  border: 1px solid rgba(255,255,255,.07);
}
.cta::after {
  content: "";
  position: absolute;
  left: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(13,148,136,.08), transparent 70%);
  border: 1px solid rgba(13,148,136,.08);
}
.cta > * { position: relative; z-index: 1; }
.cta .text { color: #a8b8cc; margin: 14px 0 28px; max-width: 640px; font-size: 16px; line-height: 1.8; }
.cta-phone { font-size: clamp(26px, 4vw, 44px); font-weight: 900; color: var(--gold-2); display: block; margin-top: 10px; font-family: var(--font-en); }

/* =========================================================
   TABLE
   ========================================================= */
.table-wrap { overflow: auto; border-radius: 16px; border: 1px solid rgba(10,16,32,.08); background: #fff; box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 18px; border-bottom: 1px solid rgba(10,16,32,.07); text-align: left; }
th { background: #0f1f3d; color: #fff; font-weight: 900; font-size: 13px; }
td { color: var(--steel); font-size: 13px; }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: rgba(200,161,90,.04); }

/* =========================================================
   CONTACT / FORM
   ========================================================= */
.contact-card { background: #fff; border-radius: 20px; border: 1px solid rgba(10,16,32,.08); box-shadow: var(--shadow); padding: 36px; }
.contact-list { display: grid; gap: 18px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; padding: 18px; background: #fff; border-radius: 14px; border: 1px solid rgba(10,16,32,.07); transition: all 0.2s; }
.contact-item:hover { border-color: rgba(200,161,90,.3); box-shadow: var(--shadow-sm); }
.contact-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--gold-light); color: var(--gold); display: grid; place-items: center; flex-shrink: 0; font-size: 18px; }
.contact-item h4 { font-size: 14px; font-weight: 900; margin-bottom: 4px; }
.contact-item p { font-size: 13px; color: var(--steel); }
.contact-item a { color: var(--teal); font-weight: 700; }
.form { display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form label { display: block; font-size: 12px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
.form input, .form textarea, .form select {
  width: 100%;
  padding: 13px 15px;
  border: 1.5px solid rgba(10,16,32,.12);
  border-radius: 12px;
  background: #fafaf8;
  color: var(--ink);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.form textarea { min-height: 130px; resize: vertical; }
.form input:focus, .form textarea:focus, .form select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(200,161,90,.1);
  background: #fff;
}

/* =========================================================
   MAP
   ========================================================= */
.map {
  height: 360px;
  border-radius: 20px;
  background: linear-gradient(135deg, #e8e1d2, #f0ebe0);
  border: 1px solid rgba(10,16,32,.06);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.map::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(10,16,32,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10,16,32,.04) 1px, transparent 1px);
  background-size: 40px 40px;
}
.map span {
  position: relative;
  padding: 14px 24px;
  border-radius: 999px;
  background: #fff;
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

/* =========================================================
   PAGE HERO (inner pages)
   ========================================================= */
.page-hero {
  background: linear-gradient(135deg, #060e1c 0%, #0f1f3d 60%, #071326 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 30%, rgba(200,161,90,.12) 0%, transparent 40%),
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: auto, 72px 72px, 72px 72px;
}
.page-hero .container { position: relative; padding: 88px 0 68px; }
.breadcrumb { display: flex; gap: 8px; flex-wrap: wrap; color: rgba(255,255,255,.5); font-size: 13px; margin-bottom: 22px; }
.breadcrumb a { color: var(--gold-2); }
.breadcrumb a:hover { text-decoration: underline; }
.page-title { font-size: clamp(32px, 5vw, 58px); font-weight: 900; }
.page-desc { max-width: 720px; color: rgba(255,255,255,.65); font-size: 16px; margin-top: 18px; line-height: 1.8; }
.page-actions { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

/* =========================================================
   DETAIL PAGE ELEMENTS
   ========================================================= */
.detail-hero-card {
  padding: 36px;
  border-radius: 20px;
  background: linear-gradient(135deg, #fff 0%, #faf8f2 100%);
  border: 1px solid rgba(10,16,32,.07);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}
.spec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 20px; }
.spec-grid > div { background: #fff; border-radius: 14px; padding: 16px; border: 1px solid rgba(10,16,32,.07); text-align: center; }
.spec-grid b { display: block; color: var(--gold); font-size: 22px; font-weight: 900; }
.spec-grid span { font-size: 11px; color: var(--steel); margin-top: 3px; display: block; }
.quote-box { padding: 28px; border-radius: 18px; background: #0f1f3d; color: #fff; }
.quote-box b { display: block; font-size: 20px; margin-bottom: 9px; color: var(--gold-2); }
.quote-box p { color: #a8b8cc; font-size: 14px; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  background: #060e1c;
  color: #94a3b8;
  padding: 72px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 44px; }
.footer .brand-title { color: #fff; font-size: 15px; }
.footer .brand-sub { color: #64748b; font-size: 9px; letter-spacing: 0.14em; }
.footer h3 { color: #fff; font-size: 15px; font-weight: 900; margin-bottom: 16px; }
.footer p, .footer a { color: #94a3b8; font-size: 13px; }
.footer a:hover { color: var(--gold-2); }
.footer-links { display: grid; gap: 9px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07);
  margin-top: 48px;
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12px;
}

/* =========================================================
   BACK TO TOP
   ========================================================= */
.backtop {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gold);
  color: #111;
  border: none;
  box-shadow: var(--shadow);
  display: none;
  place-items: center;
  font-weight: 900;
  z-index: 900;
  cursor: pointer;
  font-size: 18px;
  transition: 0.25s ease;
}
.backtop.show { display: grid; }
.backtop:hover { transform: translateY(-4px); background: var(--gold-2); }

/* =========================================================
   REVEAL ANIMATION
   ========================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1200px) {
  .header-cta .btn { display: none; }
  .main-nav a { padding: 26px 7px; font-size: 12px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stat:nth-child(2) { border-right: none; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1100px) {
  .topbar { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { margin-left: auto; }
  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: var(--header-h);
    background: rgba(247,244,238,.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(10,16,32,.1);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px 20px;
  }
  .main-nav.active { display: flex; }
  .main-nav a { padding: 13px 0; border-bottom: 1px solid rgba(10,16,32,.07); font-size: 15px; color: var(--ink); }
  .main-nav a::after { display: none; }
  .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split, .split-col { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
  .header-cta .phone-pill { display: none; }
  .section-head { grid-template-columns: 1fr; gap: 20px; }
  .section-head.center { text-align: left; }
  .detail-hero-card { grid-template-columns: 1fr; }
  .coating-compare { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 32px, 1200px); }
  .section { padding: 72px 0; }
  .section.compact { padding: 56px 0; }
  .brand-title { font-size: 12px; }
  .nav-wrap { height: 66px; }
  .main-nav { top: 66px; }
  .hero { height: min(82vh, 560px); min-height: 460px; }
  .hero-slide-content { padding: 80px 0 64px; }
  .hero-stats,
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .metric-strip,
  .form-row,
  .spec-grid { grid-template-columns: 1fr; }
  .metric-strip { margin-top: 0; border-radius: 16px; }
  .hero-stat { padding: 12px; text-align: center; border-right: none; border-bottom: 1px solid rgba(255,255,255,.07); }
  .hero-stat:last-child { border-bottom: none; }
  .hero-stat b { font-size: 26px; }
  .carousel-arrows { display: none; }
  .cta { padding: 36px 22px; border-radius: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { display: block; }
  .contact-card { padding: 24px; }
  .product-image, .case-media { height: 180px; }
  .visual-block { min-height: 300px; }
  .compare-card { padding: 24px; }
  .split { gap: 36px; }
}

@media (max-width: 420px) {
  .container { width: min(100% - 24px, 1200px); }
  .section { padding: 60px 0; }
  .page-title { font-size: 30px; }
  .h2 { font-size: 26px; }
  .service-card, .product-body, .case-body { padding: 20px; }
  .metric { padding: 22px; }
  .metric b { font-size: 30px; }
  .brand-mark { width: 40px; height: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}