:root {
  --cGray1: #F7F8FA;
  --cGray2: #EDF1F5;
  --cGray3: #E4E8F0;
  --cGray4: #D5DCE5;
  --cGray5: #C8D0DB;
  --cGray6: #919BA8;
  --cDark6: #515866;
  --cDark5: #3B424E;
  --cDark4: #262B36;
  --cDark3: #1B1F28;
  --cDark2: #1A1E26;
  --cDark1: #14171E;
  --cDarkS: #11141A;
  --cRed: #D92626;
  --cRedH: #DC3737;
  --cRedL: rgba(217,38,38,0.27);
  --cGreen: #2CA070;
  --cGreenL: rgba(44,160,112,0.27);
  --cBlue: #36A1DC;
  --cBlueL: rgba(54,161,220,0.27);
  --cGold: #e6a446;
  --cYellow: #fec42d;
  --cViolet: #94477f;
  /* Swiss brand palette (steel blue + silver gray) */
  --primary: #2c3e50;
  --secondary: #95a5a6;
  --accent: #2c3e50;
  --anchor-offset: 50px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--cDarkS);
  color: #C8D0DB;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: var(--cRed); }
ul { list-style: none; }
img { max-width: 100%; }

.container { max-width: 1170px; margin: 0 auto; padding: 0 15px; }

/* ===== HEADER ===== */
header { background: var(--primary); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,0.4); }
.top-header { border-bottom: 1px solid var(--secondary); }
.top-header .container { display: flex; align-items: center; justify-content: space-between; padding-top: 10px; padding-bottom: 10px; }
.logo-link { display: flex; align-items: center; gap: 10px; }
.logo-link img { height: 42px; width: auto; }
.logo-text { font-size: 22px; font-weight: 700; color: #fff; letter-spacing: -0.5px; }

.top-btns { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.top-btns a { font-size: 12px; padding: 6px 14px; border-radius: 4px; white-space: nowrap; }
.btn-live { background: var(--primary); color: #fff !important; }
.btn-live:hover { background: #1a2530; color: #fff; }
.btn-demo { border: 1px solid var(--cGray5); color: var(--cGray5); }
.btn-demo:hover { border-color: var(--cRed); color: var(--cRed); }
.btn-mca { border: 1px solid var(--cBlue); color: var(--cBlue); }
.btn-login { color: var(--cGray5); font-size: 13px; padding: 6px 10px; }
.btn-login:hover { color: var(--cRed); }

/* ===== NAVIGATION ===== */
.main-nav { background: var(--cDark2); border-bottom: 1px solid var(--cDark4); }
.main-nav ul { display: flex; justify-content: center; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a { display: block; padding: 14px 20px; font-size: 14px; font-weight: 600; color: var(--cGray5); white-space: nowrap; }
.main-nav > ul > li:hover > a { color: #fff; background: var(--cDark3); }

.mega-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 600px; background: var(--cDark2); border: 1px solid var(--cDark4); border-top: 3px solid var(--cRed); padding: 20px; z-index: 200; box-shadow: 0 8px 24px rgba(0,0,0,0.5); }
.main-nav > ul > li:hover .mega-menu { display: flex; gap: 30px; }
.mega-col h3 { font-size: 13px; color: var(--cRed); margin-bottom: 10px; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--cDark4); padding-bottom: 6px; }
.mega-col ul li a { display: block; padding: 5px 0; font-size: 13px; color: var(--cGray5); }
.mega-col ul li a:hover { color: var(--cRed); padding-left: 5px; }

/* ===== HERO SLIDER ===== */
.hero-slider { position: relative; overflow: hidden; background: linear-gradient(135deg, #1a1e26 0%, #14171e 50%, #11141a 100%); min-height: 480px; display: flex; align-items: center; }
.hero-slider::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: url('images/home-slider/ran-sl-01.jpg') center/cover; opacity: 0.15; }
.hero-content { position: relative; z-index: 2; max-width: 600px; }
.hero-content h1 { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 16px; }
.hero-content h1 span { color: var(--accent); }
.hero-content p { font-size: 16px; color: var(--cGray5); margin-bottom: 28px; line-height: 1.7; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-btns a { padding: 14px 28px; font-size: 15px; font-weight: 600; border-radius: 4px; }
.hero-btn-live { background: var(--primary); color: #fff !important; }
.hero-btn-live:hover { background: #1a2530; }
.hero-btn-demo { border: 2px solid var(--cGray5); color: #fff !important; }
.hero-btn-demo:hover { border-color: var(--cRed); background: rgba(217,38,38,0.1); }

.slider-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.slider-dots span { width: 30px; height: 4px; background: rgba(255,255,255,0.3); border-radius: 2px; cursor: pointer; transition: background .3s; }
.slider-dots span.active { background: var(--cRed); }

/* ===== MARKET DATA TABLE ===== */
.market-section { background: var(--cDark1); padding: 30px 0; }
.market-tabs { display: flex; gap: 2px; margin-bottom: 0; }
.market-tabs button { background: var(--cDark3); color: var(--cGray6); border: none; padding: 10px 24px; font-size: 13px; cursor: pointer; font-weight: 600; }
.market-tabs button.active { background: var(--cDark2); color: #fff; border-top: 2px solid var(--cRed); }
.market-table { width: 100%; background: var(--cDark2); border-collapse: collapse; }
.market-table th { text-align: left; padding: 10px 14px; font-size: 12px; color: var(--cGray6); font-weight: 600; border-bottom: 1px solid var(--cDark4); text-transform: uppercase; }
.market-table td { padding: 8px 14px; font-size: 13px; border-bottom: 1px solid var(--cDark3); }
.market-table tr:hover td { background: var(--cDark3); }
.market-table .sym { font-weight: 600; color: #fff; }
.market-table .bid { color: var(--cRed); }
.market-table .ask { color: var(--cGreen); }
.market-table .chg-up { color: var(--cGreen); }
.market-table .chg-dn { color: var(--cRed); }

/* ===== HOME GRID ===== */
.home-grid-section { padding: 40px 0; }
.home-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.home-card { background: var(--cDark2); border: 1px solid var(--cDark4); border-radius: 8px; padding: 24px; transition: all .3s; }
.home-card:hover { border-color: var(--cRed); transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.3); }
.home-card .card-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: var(--cDark3); border-radius: 8px; margin-bottom: 16px; }
.home-card .card-icon svg { width: 28px; height: 28px; }
.home-card h3 { font-size: 16px; color: #fff; margin-bottom: 8px; }
.home-card p { font-size: 13px; color: var(--cGray6); line-height: 1.6; }
.home-card .card-link { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--cRed); font-weight: 600; }

/* ===== NEWS SECTION ===== */
.news-section { background: var(--cDark1); padding: 40px 0; }
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.news-item { background: var(--cDark2); border: 1px solid var(--cDark4); border-radius: 8px; padding: 20px; transition: border-color .3s; }
.news-item:hover { border-color: var(--cRed); }
.news-date { font-size: 12px; color: var(--cGray6); margin-bottom: 8px; }
.news-item h3 { font-size: 15px; color: #fff; margin-bottom: 8px; }
.news-item p { font-size: 13px; color: var(--cGray6); line-height: 1.6; }
.news-item .news-more { display: inline-block; margin-top: 10px; font-size: 12px; color: var(--cRed); }

/* ===== PRODUCTS SECTION ===== */
.products-section { padding: 50px 0; }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 { font-size: 28px; color: #fff; font-weight: 700; margin-bottom: 8px; }
.section-title h2 span { color: var(--accent); }
.section-title p { font-size: 14px; color: var(--cGray6); }
.products-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.product-card { background: linear-gradient(135deg, var(--cDark2), var(--cDark1)); border: 1px solid var(--cDark4); border-radius: 12px; padding: 30px; text-align: center; transition: all .3s; position: relative; overflow: hidden; }
.product-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--cRed); transform: scaleX(0); transition: transform .3s; }
.product-card:hover { border-color: var(--cRed); transform: translateY(-5px); }
.product-card:hover::before { transform: scaleX(1); }
.product-card .prod-icon { width: 64px; height: 64px; margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; background: var(--cDark3); border-radius: 50%; }
.product-card h3 { font-size: 18px; color: #fff; margin-bottom: 10px; }
.product-card p { font-size: 13px; color: var(--cGray6); line-height: 1.7; margin-bottom: 16px; }
.product-card .prod-btn { display: inline-block; padding: 8px 20px; border: 1px solid var(--cGray5); border-radius: 4px; font-size: 13px; color: #fff; transition: all .3s; }
.product-card .prod-btn:hover { background: var(--cRed); border-color: var(--cRed); }

/* ===== ADVANTAGES ===== */
.advantages-section { background: var(--cDark1); padding: 50px 0; }
.adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; text-align: center; }
.adv-item .adv-num { font-size: 36px; font-weight: 800; color: var(--cRed); margin-bottom: 8px; }
.adv-item .adv-label { font-size: 14px; color: var(--cGray5); }
.adv-item .adv-desc { font-size: 12px; color: var(--cGray6); margin-top: 4px; }

/* ===== AWARDS ===== */
.awards-section { padding: 40px 0; background: var(--cDark2); }
.awards-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.award-item { background: var(--cDark3); border: 1px solid var(--cDark4); border-radius: 6px; padding: 12px 20px; text-align: center; min-width: 160px; }
.award-item .year { display: block; font-size: 18px; font-weight: 700; color: var(--cGold); }
.award-item .award-name { font-size: 12px; color: var(--cGray5); margin-top: 4px; }

/* ===== FOOTER ===== */
footer { background: var(--cDarkS); border-top: 1px solid var(--cDark4); }
.footer-main { padding: 40px 0; }
.footer-cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 30px; }
.footer-col h4 { font-size: 14px; color: #fff; margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 13px; color: var(--cGray6); }
.footer-col ul li a:hover { color: var(--cRed); }
.footer-contact { font-size: 13px; color: var(--cGray6); line-height: 1.8; }
.footer-contact strong { color: var(--cGray5); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-logo img { height: 36px; }
.footer-logo span { font-size: 20px; font-weight: 700; color: #fff; }
.footer-bottom { border-top: 1px solid var(--cDark4); padding: 20px 0; }
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.footer-bottom p { font-size: 12px; color: var(--cGray6); }
.footer-bottom .footer-links { display: flex; gap: 20px; }
.footer-bottom .footer-links a { font-size: 12px; color: var(--cGray6); }
.footer-bottom .footer-links a:hover { color: var(--cRed); }

/* ===== COOKIE BAR ===== */
.cookie-bar { position: fixed; bottom: 0; left: 0; right: 0; background: var(--cDark1); border-top: 2px solid var(--cRed); padding: 16px 0; z-index: 9999; display: none; }
.cookie-bar .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.cookie-bar p { font-size: 13px; color: var(--cGray5); flex: 1; }
.cookie-bar p a { color: var(--cRed); text-decoration: underline; }
.cookie-btn { background: var(--cRed); color: #fff; border: none; padding: 8px 20px; border-radius: 4px; cursor: pointer; font-size: 13px; font-weight: 600; }
.cookie-btn:hover { background: var(--cRedH); }

/* ===== MOBILE MENU ===== */
.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 4px; }
.mobile-menu-btn span { width: 24px; height: 3px; background: #fff; border-radius: 2px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .mega-menu { position: static; min-width: auto; box-shadow: none; border: none; padding: 10px 0 0; display: none; }
  .main-nav > ul > li:hover .mega-menu { display: none; }
}
@media (max-width: 767px) {
  .top-btns { display: none; }
  .mobile-menu-btn { display: flex; }
  .main-nav { display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .hero-content h1 { font-size: 28px; }
  .hero-content p { font-size: 14px; }
  .footer-cols { grid-template-columns: 1fr; }
  .section-title h2 { font-size: 22px; }
}