/* ============================================================
   QERYU NIM — Official Website Stylesheet
   Color Scheme: Tech Sport — Deep Blue #0C1F3F + Electric Green #00E5A0
   ============================================================ */

/* ========== RESET & BASE ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: #0C1F3F;
  background: #F5F7FA;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }

:root {
  --nv: #0C1F3F;   /* Navy - Primary */
  --gn: #00E5A0;   /* Electric Green - Accent */
  --bl: #2D5BFF;   /* Blue - Links */
  --bg: #F5F7FA;   /* Background */
  --gr: #6B7280;   /* Gray text */
  --bd: rgba(12,31,63,0.10);
  --nav-h: 64px;
  --ease: cubic-bezier(.25,.46,.45,.94);
}

/* ========== LOADING SCREEN ========== */
#page-loader {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: var(--nv); z-index: 99999;
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  transition: opacity .6s var(--ease), visibility .6s;
}
#page-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-ring {
  width: 44px; height: 44px;
  border: 3px solid rgba(255,255,255,.1); border-top-color: var(--gn); border-radius: 50%;
  animation: spin .8s linear infinite;
}
.loader-text { color: rgba(255,255,255,.5); font-size: 12px; margin-top: 14px; letter-spacing: .2em; }

/* ========== MAIN NAV BAR (sticky glass) ========== */
.main-nav {
  position: sticky; top: 0; z-index: 998;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--bd);
  transition: all .35s var(--ease);
}
.main-nav.scrolled { box-shadow: 0 2px 20px rgba(12,31,63,.08); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
}
.nav-brand {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; font-weight: 700; font-size: 17px; color: var(--nv);
  transition: opacity .2s;
}
.nav-brand:hover { opacity: .8; }
.nav-logo-icon {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg,var(--nv),#1a305f);
  display: flex; align-items: center; justify-content: center;
  color: var(--gn); font-weight: 800; font-size: 13px;
  border: 1.5px solid rgba(0,229,160,.3);
}
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 13px; color: var(--gr); text-decoration: none;
  position: relative; font-weight: 500; transition: color .25s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--gn); border-radius: 1px; transition: width .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--nv); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-lang {
  font-size: 11px; color: var(--gr); padding: 5px 12px;
  border: 1px solid var(--bd); border-radius: 20px; cursor: pointer;
  transition: all .2s; font-weight: 500; user-select: none;
}
.nav-lang:hover { border-color: var(--gn); color: var(--nv); }

/* Hamburger for mobile */
.hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  padding: 6px; z-index: 999;
}
.hamburger span {
  width: 22px; height: 2px; background: var(--nv); border-radius: 1px;
  transition: all .3s var(--ease);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ========== CONTAINER ========== */
.ctn { max-width: 1200px; margin: 0 auto; padding: 0 28px; }

/* ========== HERO SECTION ========== */
.hero {
  background: var(--nv); min-height: 88vh;
  display: flex; align-items: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -40%; right: -20%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle,rgba(0,229,160,.08) 0%,transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ''; position: absolute; bottom: -30%; left: -10%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle,rgba(45,91,255,.06) 0%,transparent 70%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--gn); font-size: 12px; letter-spacing: .18em; margin-bottom: 20px;
  font-weight: 600; background: rgba(0,229,160,.1); padding: 6px 14px; border-radius: 20px;
  width: fit-content;
}
.hero-badge::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--gn);
  animation: pulse-dot 2s infinite;
}
.hero h1 {
  font-size: 96px; font-weight: 900; line-height: .92; margin-bottom: 14px;
  letter-spacing: -.03em;
  background: linear-gradient(180deg,#fff 30%,rgba(255,255,255,.75));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero h2 { font-size: 34px; font-weight: 300; color: rgba(255,255,255,.92); margin-bottom: 18px; letter-spacing: .02em; }
.hero p { font-size: 15px; color: rgba(255,255,255,.55); margin-bottom: 28px; max-width: 480px; line-height: 1.75; }
.hero-img-wrap {
  aspect-ratio: 1; border-radius: 20px; position: relative; overflow: hidden;
  border: 1px solid rgba(255,255,255,.08);
  background: linear-gradient(145deg,#1a305f,#0f203a);
  display: flex; align-items: center; justify-content: center;
  color: var(--gn); font-size: 13px; letter-spacing: .1em;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Page header (for subpages) */
.page-header {
  background: var(--nv); color: white; padding: 60px 0 48px; text-align: center;
  position: relative; overflow: hidden;
}
.page-header::before {
  content: ''; position: absolute; top: -40%; right: -15%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle,rgba(0,229,160,.06) 0%,transparent 70%);
}
.page-header h1 { font-size: 42px; font-weight: 800; margin-bottom: 8px; position: relative; z-index: 1; }
.page-header p { color: rgba(255,255,255,.55); font-size: 15px; max-width: 550px; margin: 0 auto; position: relative; z-index: 1; }
.breadcrumb { font-size: 12px; color: rgba(255,255,255,.35); margin-bottom: 14px; position: relative; z-index: 1; }
.breadcrumb a { color: var(--gn); transition: color .2s; }
.breadcrumb a:hover { color: white; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 13px 28px; border-radius: 10px; font-size: 13px; font-weight: 600;
  text-decoration: none; border: none; cursor: pointer;
  transition: all .3s var(--ease); position: relative; overflow: hidden;
}
.btn::after {
  content: ''; position: absolute; top: 50%; left: 50%;
  width: 0; height: 0; background: rgba(255,255,255,.2); border-radius: 50%;
  transform: translate(-50%,-50%); transition: width .4s, height .4s;
}
.btn:active::after { width: 200px; height: 200px; }
.btn-gn { background: linear-gradient(135deg,#00E5A0,#00c98b); color: var(--nv); box-shadow: 0 4px 16px rgba(0,229,160,.25); }
.btn-gn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,229,160,.35); }
.btn-outline-w { background: transparent; color: white; border: 1.5px solid rgba(255,255,255,.4); }
.btn-outline-w:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.65); }
.btn-outline-dk { background: transparent; color: var(--nv); border: 1.5px solid var(--bd); }
.btn-outline-dk:hover { border-color: var(--gn); color: var(--nv); background: rgba(0,229,160,.04); }
.btn-dark { background: var(--nv); color: white; box-shadow: 0 4px 12px rgba(12,31,63,.2); }
.btn-dark:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(12,31,63,.3); }

/* ========== SECTIONS ========== */
.sec { padding: 80px 0; }
.sec-bg { background: var(--bg); }
.sec-dark { background: var(--nv); color: white; }
.sec-dark h2, .sec-dark h3 { color: white; }
.sec-dark p { color: rgba(255,255,255,.65); }

/* Label badge */
.lbl {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 14px; background: rgba(0,229,160,.1); color: var(--gn);
  border-radius: 20px; font-size: 11px; font-weight: 700; letter-spacing: .14em;
  margin-bottom: 14px; border: 1px solid rgba(0,229,160,.15);
}
.sec-dark .lbl { background: rgba(0,229,160,.15); border-color: rgba(0,229,160,.2); }

h2 { font-size: 38px; font-weight: 800; color: var(--nv); margin-bottom: 14px; line-height: 1.15; letter-spacing: -.01em; }
.sec-dark h2 { color: white; }
h3 { font-size: 18px; font-weight: 700; color: var(--nv); margin-bottom: 6px; }
.desc { color: var(--gr); font-size: 15px; max-width: 620px; margin-bottom: 36px; line-height: 1.7; }

/* ========== FEATURE CARDS (3-col) ========== */
.feat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.feat-card {
  background: white; border: 1px solid var(--bd); border-radius: 16px; padding: 32px 26px;
  transition: all .35s var(--ease); position: relative; overflow: hidden;
}
.feat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg,var(--gn),#00c98b); opacity: 0; transition: opacity .3s;
}
.feat-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(12,31,63,.1); border-color: rgba(0,229,160,.2); }
.feat-card:hover::before { opacity: 1; }
.feat-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(135deg,rgba(0,229,160,.12),rgba(0,229,160,.04));
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px; font-size: 24px;
}

/* ========== METRICS BAND ========== */
.metrics-band {
  background: var(--nv); color: white; padding: 56px 0; position: relative; overflow: hidden;
}
.metrics-band::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg,transparent,rgba(0,229,160,.3),transparent);
}
.metric-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; text-align: center; }
.metric-num { font-size: 58px; font-weight: 900; line-height: 1; color: white; }
.metric-unit { font-size: 20px; color: var(--gn); margin-left: 2px; font-weight: 600; }
.metric-label { font-size: 11px; color: rgba(255,255,255,.4); letter-spacing: .14em; margin-top: 8px; text-transform: uppercase; font-weight: 600; }
.metric-desc { font-size: 13px; color: rgba(255,255,255,.7); margin-top: 4px; }

/* ========== SPLIT LAYOUT ========== */
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }

/* ========== PRODUCT CARDS ========== */
.prod-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.prod-card {
  background: white; border: 1px solid var(--bd); border-radius: 16px; padding: 20px;
  transition: all .35s var(--ease); cursor: pointer;
  display: flex; flex-direction: column; height: 100%;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: 0 10px 36px rgba(12,31,63,.09); border-color: rgba(0,229,160,.2); }
.prod-thumb {
  border-radius: 10px; aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; position: relative; background: var(--bg);
  flex-shrink: 0;
}
.prod-thumb img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.prod-name { font-size: 17px; font-weight: 700; color: var(--nv); margin: 12px 0 3px; }
.prod-tag { font-size: 12px; color: var(--gr); margin-bottom: 12px; flex: 1; }
.prod-link {
  color: var(--bl); font-size: 13px; font-weight: 600; text-decoration: none;
  display: inline-flex; align-items: center; gap: 4px; transition: gap .2s;
  margin-top: auto;
}
.prod-link:hover { gap: 8px; }

/* ========== SCENE TABS ========== */
.scene-section {
  background: linear-gradient(180deg,rgba(12,31,63,.78) 0%,rgba(12,31,63,.95) 100%);
  color: white; text-align: center; padding: 90px 0; position: relative;
}
.scene-tabs { display: flex; gap: 8px; justify-content: center; margin: 24px 0 34px; flex-wrap: wrap; }
.scene-tab {
  padding: 7px 20px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: 24px; font-size: 13px; color: rgba(255,255,255,.7); cursor: pointer;
  transition: all .3s var(--ease); user-select: none;
}
.scene-tab:hover { background: rgba(255,255,255,.1); color: white; }
.scene-tab.active {
  background: var(--gn); color: var(--nv); border-color: var(--gn);
  font-weight: 600; box-shadow: 0 4px 16px rgba(0,229,160,.25);
}
.scene-panel { display: none; }
.scene-panel.active { display: block; animation: fadeInUp .5s var(--ease); }

/* ========== CTA BANNER ========== */
.cta-banner { background: var(--gn); padding: 54px  0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }

/* ========== FOOTER ========== */
.footer {
  background: var(--nv); color: rgba(255,255,255,.4); padding: 56px 0 24px; font-size: 13px;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
.footer-brand { color: white; }
.footer-brand .nav-brand { margin-bottom: 12px; }
.footer-about { line-height: 1.7; }
.footer-col h4 { color: white; font-size: 13px; margin-bottom: 14px; font-weight: 600; }
.footer-col a {
  display: block; color: rgba(255,255,255,.45); text-decoration: none; font-size: 12.5px;
  margin-bottom: 8px; transition: color .2s;
}
.footer-col a:hover { color: var(--gn); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.07); padding-top: 20px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 11.5px;
}

/* ========== TABLE ========== */
.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px; }
.data-table td { padding: 11px 10px; border-bottom: 1px solid var(--bd); }
.data-table td:first-child { color: var(--gr); width: 38%; font-weight: 500; }
.sec-dark .data-table td { border-color: rgba(255,255,255,.08); color: rgba(255,255,255,.85); }
.sec-dark .data-table td:first-child { color: rgba(255,255,255,.45); }

/* ========== METRIC CARD (inline) ========== */
.mcard { background: var(--bg); border-radius: 12px; padding: 18px 20px; text-align: center; }
.mcard-val { font-size: 30px; font-weight: 800; color: var(--nv); }
.mcard-lbl { font-size: 11px; color: var(--gr); margin-top: 4px; font-weight: 500; }

/* GRID HELPERS */
.g2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 28px; }
.g3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.g4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.gap-lg { gap: 36px; }

/* Card base */
.card {
  background: white; border: 1px solid var(--bd); border-radius: 14px; padding: 26px;
  transition: all .3s var(--ease);
}
.card:hover { box-shadow: 0 8px 28px rgba(12,31,63,.07); border-color: rgba(0,229,160,.15); }
.card-dark {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 26px;
  transition: all .3s var(--ease);
}
.card-dark:hover { background: rgba(255,255,255,.08); }
.sec-dark .card-dark h3, .sec-dark .card-dark p { color: rgba(255,255,255,.8); }

.icon-box {
  width: 52px; height: 52px; border-radius: 13px;
  background: linear-gradient(135deg,rgba(0,229,160,.12),rgba(0,229,160,.03));
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 24px;
}

/* Badge */
.badge { display: inline-block; padding: 3px 10px; border-radius: 6px; font-size: 10.5px; font-weight: 600; letter-spacing: .02em; }
.badge-gn { background: var(--gn); color: var(--nv); }
.badge-outline { background: transparent; border: 1px solid var(--bd); color: var(--nv); }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.step-card {
  padding: 28px 24px 24px; background: white; border: 1px solid var(--bd); border-radius: 14px;
  position: relative; transition: all .3s var(--ease);
}
.step-card:hover { transform: translateY(-4px); box-shadow: 0 8px 28px rgba(12,31,63,.08); }
.step-num {
  position: absolute; top: -14px; left: 22px; width: 32px; height: 32px;
  background: linear-gradient(135deg,var(--gn),#00c98b); color: var(--nv); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,229,160,.3);
}

/* Timeline */
.timeline { display: flex; gap: 0; margin: 24px 0; position: relative; }
.tl-item { flex: 1; text-align: center; position: relative; padding: 0 8px; }
.tl-item:not(:last-child)::after {
  content: ''; position: absolute; top: 6px; right: -50%; width: 100%; height: 2px; background: var(--bd);
}
.tl-dot {
  width: 12px; height: 12px; background: var(--gn); border-radius: 50%; margin: 0 auto 8px;
  box-shadow: 0 0 0 4px rgba(0,229,160,.12);
}
.tl-year { font-size: 14px; font-weight: 700; color: var(--nv); }
.tl-event { font-size: 11px; color: var(--gr); margin-top: 3px; }

/* Cert card */
.cert-card {
  width: 76px; height: 76px; border: 1.5px solid var(--bd); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; flex-direction: column; margin: 0 auto;
  transition: all .3s;
}
.cert-card:hover { border-color: var(--gn); box-shadow: 0 4px 16px rgba(0,229,160,.12); }
.cert-code { font-size: 17px; font-weight: 800; color: var(--nv); }
.cert-name { font-size: 9.5px; color: var(--gr); margin-top: 3px; font-weight: 500; }

/* Avatar */
.avatar {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg,var(--nv),#1a305f); margin: 0 auto 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gn); font-size: 20px; font-weight: 800;
  border: 2px solid rgba(0,229,160,.2);
}

/* Map placeholder */
.map-placeholder {
  aspect-ratio: 2/1; background: linear-gradient(135deg,#E8EDF3,#DDE3EA); border-radius: 12px;
  display: flex; align-items: center; justify-content: center; color: var(--gr); font-size: 13px;
  position: relative; overflow: hidden;
}
.map-placeholder::after {
  content: ''; position: absolute; width: 200%; height: 200%;
  background: repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(0,229,160,.03) 10px,rgba(0,229,160,.03) 20px);
}

/* Form elements */
.form-label { display: block; font-size: 12.5px; color: var(--gr); margin-bottom: 5px; font-weight: 600; }
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 11px 14px; border: 1.5px solid var(--bd); border-radius: 10px;
  font-size: 13.5px; font-family: inherit; color: var(--nv); background: white;
  transition: border-color .25s, box-shadow .25s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none; border-color: var(--gn); box-shadow: 0 0 0 3px rgba(0,229,160,.1);
}

/* List items with number */
.num-list-item { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 12px; }
.num-list-n {
  width: 28px; height: 28px; background: var(--gn); color: var(--nv); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 12px; flex-shrink: 0;
}
.sec-dark .num-list-n { background: var(--bl); color: white; }

/* Divider */
.divider { text-align: center; padding: 22px 0; border-bottom: 1px solid var(--bd); }

/* ========== 3D VIEWER ========== */
.model-3d-container {
  background: linear-gradient(180deg,#E8EDF3 0%,#F5F7FA 100%);
  border-radius: 16px; aspect-ratio: 1; position: relative; overflow: hidden;
  border: 1px solid var(--bd); box-shadow: inset 0 2px 8px rgba(12,31,63,.03);
}
.model-hint {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 6px; background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  padding: 5px 14px; border-radius: 20px; font-size: 10.5px; color: var(--gr);
  z-index: 5; pointer-events: none; font-weight: 500; box-shadow: 0 2px 8px rgba(0,0,0,.05);
}

/* Color swatches */
.swatch-row { display: flex; gap: 8px; margin-top: 12px; align-items: center; flex-wrap: wrap; }
.swatch-label { font-size: 11.5px; color: var(--gr); font-weight: 500; }
.swatch {
  width: 26px; height: 26px; border-radius: 50%; cursor: pointer;
  border: 2.5px solid transparent; transition: all .25s var(--ease); position: relative;
}
.swatch:hover { transform: scale(1.15); }
.swatch.active { border-color: var(--nv); box-shadow: 0 0 0 2px white, 0 0 0 4px var(--nv); }
.swatch-info { font-size: 10px; color: var(--gn); margin-left: auto; font-weight: 600; }

/* Image placeholder / wrapper */
.img-placeholder {
  background: var(--bg); border-radius: 12px; display: flex; align-items: center; justify-content: center;
  color: var(--gr); font-size: 13px; border: 1px solid var(--bd); overflow: hidden; position: relative;
}
.img-placeholder img { width: 100%; height: 100%; object-fit: cover; }

/* ========== SCROLL ANIMATIONS ========== */
.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-28px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right { opacity: 0; transform: translateX(28px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.fade-right.visible { opacity: 1; transform: translateX(0); }
.scale-in { opacity: 0; transform: scale(.95); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.scale-in.visible { opacity: 1; transform: scale(1); }

/* Stagger children */
.stagger > * { transition-delay: calc(var(--i,0) * .08s); }

/* ========== BACK TO TOP ========== */
.back-to-top {
  position: fixed; bottom: 28px; right: 28px; width: 44px; height: 44px; border-radius: 50%;
  background: var(--nv); color: var(--gn); border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; font-size: 18px;
  box-shadow: 0 4px 16px rgba(12,31,63,.2);
  opacity: 0; transform: translateY(12px); transition: all .35s var(--ease); z-index: 90;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--gn); color: var(--nv); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,229,160,.3); }

/* ========== KEYFRAMES ========== */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse-dot { 0%,100%{opacity:1} 50%{opacity:.3} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
@keyframes countUp { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:translateY(0)} }

/* ========== RESPONSIVE ========== */
@media(max-width:1024px) {
  .hero h1 { font-size: 72px; }
  .feat-grid, .prod-grid, .g3, .g4, .metric-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media(max-width:768px) {
  html { scroll-padding-top: 56px; }
  .main-nav { top: auto !important; }
  .nav-inner { height: 56px; padding: 0 16px; }
  .nav-links {
    display: none; position: fixed; top: 56px; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,.97); backdrop-filter: blur(20px);
    flex-direction: column; padding: 32px 24px; gap: 0; z-index: 997;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 17px; padding: 12px 0; border-bottom: 1px solid var(--bd); }
  .hamburger { display: flex; }
  .nav-lang { position: absolute; top: 16px; right: 56px; }
  .hero { min-height: 70vh; } .hero h1 { font-size: 52px; } .hero h2 { font-size: 24px; }
  .hero-grid, .split-grid, .g2 { grid-template-columns: 1fr; gap: 28px; }
  .feat-grid, .prod-grid, .g3, .g4, .metric-grid, .steps-grid, .footer-grid { grid-template-columns: 1fr; }
  h2 { font-size: 28px; } .sec { padding: 52px 0; } .metrics-band { padding: 40px 0; }
  .scene-section { padding: 56px 0; }
  .cta-inner { justify-content: center; text-align: center; }
  .back-to-top { bottom: 18px; right: 18px; width: 40px; height: 40px; font-size: 16px; }
  .page-header { padding: 40px 0 32px; }
  .page-header h1 { font-size: 30px; }
}
@media(max-width:380px) {
  .hero h1 { font-size: 42px; } .hero h2 { font-size: 20px; }
  .metric-num { font-size: 42px; }
}

/* ========== ADMIN OVERRIDES (only load on admin pages) ========== */
body.admin-body {
  background: #F0F2F5;
}
.admin-container {
  display: flex; min-height: 100vh;
}
.admin-sidebar {
  width: 240px; background: var(--nv); color: white;
  display: flex; flex-direction: column; flex-shrink: 0;
}
.admin-sidebar-header {
  padding: 20px 24px; border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; gap: 10px;
}
.admin-sidebar-header .logo-icon {
  width: 32px; height: 32px; border-radius: 8px; background: var(--gn);
  display: flex; align-items: center; justify-content: center;
  color: var(--nv); font-weight: 800; font-size: 14px;
}
.admin-sidebar-header span { font-weight: 700; font-size: 15px; }
.admin-sidebar-header small { color: rgba(255,255,255,.35); font-size: 10px; display: block; margin-top: 2px; }
.admin-nav { list-style: none; padding: 16px 12px; flex: 1; }
.admin-nav li a {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 8px;
  font-size: 13.5px; color: rgba(255,255,255,.65); transition: all .2s;
}
.admin-nav li a:hover, .admin-nav li a.active {
  background: rgba(0,229,160,.12); color: var(--gn);
}
.admin-nav li a.active { font-weight: 600; }
.admin-main { flex: 1; display: flex; flex-direction: column; overflow-x: hidden; }
.admin-topbar {
  background: white; padding: 14px 28px; border-bottom: 1px solid var(--bd);
  display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}
.admin-topbar h2 { font-size: 17px; font-weight: 700; margin: 0; }
.admin-topbar .user-info { font-size: 12.5px; color: var(--gr); }
.admin-content { padding: 24px 28px; flex: 1; }
.admin-card {
  background: white; border: 1px solid var(--bd); border-radius: 12px; padding: 24px; margin-bottom: 20px;
}
.stat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: white; border: 1px solid var(--bd); border-radius: 12px; padding: 20px;
  display: flex; align-items: center; gap: 16px;
}
.stat-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0;
}
.stat-icon.green { background: rgba(0,229,160,.1); color: var(--gn); }
.stat-icon.blue { background: rgba(45,91,255,.1); color: var(--bl); }
.stat-icon.navy { background: rgba(12,31,63,.06); color: var(--nv); }
.stat-val { font-size: 24px; font-weight: 800; color: var(--nv); }
.stat-lbl { font-size: 11.5px; color: var(--gr); margin-top: 2px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th {
  background: var(--bg); padding: 10px 14px; text-align: left; font-weight: 600; color: var(--gr);
  font-size: 11.5px; text-transform: uppercase; letter-spacing: .05em; border-bottom: 1px solid var(--bd);
}
.admin-table td { padding: 10px 14px; border-bottom: 1px solid var(--bd); color: var(--nv); }
.admin-table tr:hover td { background: rgba(0,229,160,.03); }
.status-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.status-badge.new { background: rgba(0,229,160,.1); color: #059669; }
.status-badge.pending { background: rgba(245,158,11,.1); color: #D97706; }
.status-badge.done { background: rgba(107,114,128,.1); color: #6B7280; }
.admin-btn {
  display: inline-flex; align-items: center; gap: 4px; padding: 7px 16px; border-radius: 8px;
  font-size: 12px; font-weight: 600; cursor: pointer; border: none; transition: all .2s;
}
.admin-btn-primary { background: var(--gn); color: var(--nv); }
.admin-btn-primary:hover { background: #00c98b; }
.admin-btn-danger { background: #FEE2E2; color: #DC2626; }
.admin-btn-danger:hover { background: #FECACA; }
.admin-btn-secondary { background: var(--bg); color: var(--nv); border: 1px solid var(--bd); }
.admin-btn-secondary:hover { border-color: var(--gn); color: var(--nv); }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12.5px; font-weight: 600; color: var(--gr); margin-bottom: 4px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--bd); border-radius: 8px;
  font-size: 13px; font-family: inherit; color: var(--nv); transition: border-color .2s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--gn); box-shadow: 0 0 0 3px rgba(0,229,160,.08);
}
.login-wrapper {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--nv), #162d52);
}
.login-box {
  background: white; border-radius: 16px; padding: 40px; width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}
.login-box h2 { text-align: center; margin-bottom: 4px; }
.login-box p { text-align: center; color: var(--gr); font-size: 13px; margin-bottom: 24px; }
@media(max-width:768px) {
  .admin-sidebar { display: none; }
  .stat-grid { grid-template-columns: repeat(2,1fr); }
  .admin-content { padding: 16px; }
  .login-box { width: 90%; margin: 20px; }
}
@media(max-width:480px) {
  .stat-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   ✨ VISUAL ENHANCEMENTS v2
   ============================================================ */

/* Enhanced CSS variables */
:root {
  --gn-light: rgba(0,229,160,0.08);
  --gn-glow: 0 0 20px rgba(0,229,160,0.15);
  --shadow-sm: 0 2px 8px rgba(12,31,63,0.04);
  --shadow-md: 0 8px 32px rgba(12,31,63,0.08);
  --shadow-lg: 0 16px 48px rgba(12,31,63,0.12);
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
}

/* ===== NAV BAR POLISH ===== */
.main-nav {
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(200%) blur(24px);
  -webkit-backdrop-filter: saturate(200%) blur(24px);
}
.main-nav.scrolled {
  box-shadow: 0 4px 24px rgba(12,31,63,0.06);
  background: rgba(255,255,255,0.92);
}
.nav-logo-icon {
  box-shadow: 0 2px 8px rgba(0,229,160,0.15);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.nav-brand:hover .nav-logo-icon {
  transform: scale(1.08);
  box-shadow: 0 4px 16px rgba(0,229,160,0.25);
}
.nav-lang {
  transition: all 0.25s var(--ease);
}
.nav-lang:hover {
  background: rgba(0,229,160,0.08);
  box-shadow: 0 2px 12px rgba(0,229,160,0.1);
}

/* ===== HERO ENHANCE ===== */
.hero {
  background: linear-gradient(160deg, var(--nv) 0%, #162d52 40%, #1a305f 100%);
}
.hero::before {
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(0,229,160,0.1) 0%, transparent 70%);
  animation: float-slow 8s ease-in-out infinite;
}
.hero-img-wrap {
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.hero-img-wrap:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 72px rgba(0,0,0,0.3);
}

/* ===== BUTTON ENHANCE ===== */
.btn {
  border-radius: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.btn-gn {
  background: linear-gradient(135deg, #00E5A0 0%, #00c98b 50%, #00b87a 100%);
  box-shadow: 0 4px 20px rgba(0,229,160,0.25);
}
.btn-gn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,229,160,0.4);
}
.btn-dark {
  background: linear-gradient(135deg, var(--nv) 0%, #1a305f 100%);
  box-shadow: 0 4px 16px rgba(12,31,63,0.2);
}
.btn-dark:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(12,31,63,0.35);
}
.btn-outline-w {
  border: 1.5px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(4px);
}
.btn-outline-w:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.6);
  box-shadow: 0 4px 16px rgba(255,255,255,0.08);
}
.btn-outline-dk:hover {
  border-color: var(--gn);
  box-shadow: 0 4px 16px rgba(0,229,160,0.12);
}

/* ===== SECTION ENHANCE ===== */
.sec { padding: 90px 0; }
.sec-bg {
  background: linear-gradient(180deg, #F5F7FA 0%, #EEF1F5 50%, #F5F7FA 100%);
}
.sec-dark {
  background: linear-gradient(160deg, var(--nv) 0%, #162d52 50%, #0f203a 100%);
  position: relative;
}
.sec-dark::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='1' fill='rgba(255,255,255,0.03)'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* ===== LABEL BADGE ENHANCE ===== */
.lbl {
  font-weight: 700;
  letter-spacing: 0.12em;
  backdrop-filter: blur(4px);
  transition: all 0.3s var(--ease);
}
.lbl:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,229,160,0.15);
}

/* ===== FEATURE CARD ENHANCE ===== */
.feat-card {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.feat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,229,160,0.25);
}
.feat-icon {
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0,229,160,0.15), rgba(0,229,160,0.04));
  transition: all 0.3s var(--ease);
}
.feat-card:hover .feat-icon {
  background: linear-gradient(135deg, rgba(0,229,160,0.25), rgba(0,229,160,0.08));
  transform: scale(1.05);
}

/* ===== CARD ENHANCE ===== */
.card {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0,229,160,0.2);
}
.card-dark {
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.35s var(--ease);
}
.card-dark:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(0,229,160,0.15);
  transform: translateY(-2px);
}

/* ===== ICON BOX ENHANCE ===== */
.icon-box {
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0,229,160,0.12), rgba(45,91,255,0.04));
  transition: all 0.3s var(--ease);
}
.card:hover .icon-box {
  transform: scale(1.06) rotate(-3deg);
}

/* ===== METRICS ENHANCE ===== */
.metrics-band {
  background: linear-gradient(160deg, var(--nv) 0%, #162d52 100%);
  position: relative;
}
.metrics-band::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,229,160,0.2), transparent);
}
.metric-num {
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,0.8));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.metric-card {
  transition: transform 0.3s var(--ease);
}
.metric-card:hover {
  transform: translateY(-4px);
}

/* ===== PRODUCT CARD ENHANCE ===== */
.prod-card {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.prod-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.prod-thumb {
  border-radius: 12px;
  transition: transform 0.4s var(--ease);
}
.prod-card:hover .prod-thumb {
  transform: scale(1.02);
}
.prod-link {
  transition: all 0.25s var(--ease);
  font-weight: 600;
}

/* ===== SCENE SECTION ENHANCE ===== */
.scene-section {
  background: linear-gradient(180deg, rgba(12,31,63,0.85) 0%, var(--nv) 100%);
  position: relative;
}
.scene-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='20' cy='20' r='0.5' fill='rgba(0,229,160,0.04)'/%3E%3C/svg%3E");
  pointer-events: none;
}
.scene-tab {
  backdrop-filter: blur(4px);
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.scene-tab.active {
  background: linear-gradient(135deg, #00E5A0, #00c98b);
  box-shadow: 0 6px 24px rgba(0,229,160,0.35);
  transform: translateY(-1px);
}

/* ===== CTA BANNER ENHANCE ===== */
.cta-banner {
  background: linear-gradient(135deg, #00E5A0 0%, #00c98b 50%, #00b87a 100%);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -50%; right: -10%;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  animation: float-slow 6s ease-in-out infinite;
}

/* ===== FOOTER ENHANCE ===== */
.footer {
  background: linear-gradient(160deg, #09162b 0%, var(--nv) 50%, #162d52 100%);
  position: relative;
}
.footer::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0,229,160,0.3), transparent);
}
.footer-col a {
  transition: all 0.25s var(--ease);
  padding-left: 0;
}
.footer-col a:hover {
  color: var(--gn);
  padding-left: 4px;
  text-shadow: 0 0 12px rgba(0,229,160,0.2);
}

/* ===== FORM ENHANCE ===== */
.form-input, .form-textarea, .form-select {
  border-radius: var(--radius-sm);
  transition: all 0.3s var(--ease);
  background: #FAFBFC;
}
.form-input:hover, .form-textarea:hover, .form-select:hover {
  border-color: rgba(0,229,160,0.3);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  background: #fff;
  border-color: var(--gn);
  box-shadow: 0 0 0 4px rgba(0,229,160,0.1), 0 4px 12px rgba(0,229,160,0.06);
}
.form-label {
  font-size: 12.5px;
  color: var(--gr);
  letter-spacing: 0.02em;
}

/* ===== TIMELINE ENHANCE ===== */
.tl-dot {
  width: 14px; height: 14px;
  box-shadow: 0 0 0 6px rgba(0,229,160,0.15), 0 0 20px rgba(0,229,160,0.1);
  transition: all 0.3s var(--ease);
}
.tl-item:hover .tl-dot {
  transform: scale(1.4);
  box-shadow: 0 0 0 10px rgba(0,229,160,0.2), 0 0 30px rgba(0,229,160,0.15);
}
.tl-item:not(:last-child)::after {
  background: linear-gradient(90deg, var(--bd), rgba(0,229,160,0.2));
}

/* ===== STEP CARD ENHANCE ===== */
.step-card {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.step-num {
  background: linear-gradient(135deg, #00E5A0, #00b87a);
  box-shadow: 0 6px 20px rgba(0,229,160,0.35);
  transition: all 0.3s var(--ease);
}
.step-card:hover .step-num {
  transform: scale(1.1);
  box-shadow: 0 8px 28px rgba(0,229,160,0.45);
}

/* ===== CERT CARD ENHANCE ===== */
.cert-card {
  border-radius: 14px;
  background: linear-gradient(135deg, #fff, #FAFBFC);
  box-shadow: var(--shadow-sm);
  transition: all 0.35s var(--ease);
}
.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gn);
}
.cert-code {
  background: linear-gradient(135deg, var(--nv), #1a305f);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ===== AVATAR ENHANCE ===== */
.avatar {
  transition: all 0.35s var(--ease);
  box-shadow: 0 4px 16px rgba(12,31,63,0.15);
}
.card:hover .avatar {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(12,31,63,0.25);
}

/* ===== DIVIDER ENHANCE ===== */
.divider {
  position: relative;
}
.divider::after {
  content: ''; position: absolute; bottom: -1px; left: 50%; transform: translateX(-50%);
  width: 60px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--gn), transparent);
}

/* ===== BACK TO TOP ENHANCE ===== */
.back-to-top {
  background: linear-gradient(135deg, var(--nv), #1a305f);
  box-shadow: 0 4px 20px rgba(12,31,63,0.25);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.back-to-top:hover {
  background: linear-gradient(135deg, #00E5A0, #00c98b);
  color: var(--nv);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,229,160,0.4);
}

/* ===== SCROLL ANIMATIONS ENHANCE ===== */
.fade-up { transform: translateY(32px); }
.fade-up.visible { transform: translateY(0); opacity: 1; }

/* ===== NEW ANIMATIONS ===== */
@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(2deg); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes border-glow {
  0%, 100% { border-color: rgba(0,229,160,0.15); }
  50% { border-color: rgba(0,229,160,0.35); }
}

/* ===== SUBTLE BACKGROUND TEXTURE ===== */
body {
  background: linear-gradient(180deg, #F5F7FA 0%, #EEF1F5 50%, #F5F7FA 100%);
}

/* ===== IMAGE PLACEHOLDER ===== */
.img-placeholder {
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.35s var(--ease);
}
.img-placeholder img {
  transition: transform 0.5s var(--ease);
}
.img-placeholder:hover img {
  transform: scale(1.04);
}

/* ===== SELECT ENHANCE ===== */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236B7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

/* ===== H1/H2/H3 TYPOGRAPHY ===== */
h2 {
  letter-spacing: -0.015em;
}
h3 {
  letter-spacing: -0.01em;
}

/* ===== RESPONSIVE TWEAKS ===== */
@media(max-width:768px) {
  .sec { padding: 60px 0; }
  .hero { min-height: 75vh; }
  .fade-up { transform: translateY(20px); }
}