/* ============================================================
   远航集团 — 企业官网样式
   Responsive strategy: deterministic, breakpoint-based scaling.
   Base sizes are FIXED. TSizes step up only at genuine large
   screen breakpoints (1600 / 1920 / 2560+), so resizing a
   normal window never continuously shrinks/grows the layout.
   ============================================================ */

:root {
  --color-primary: #1a3a5c;
  --color-primary-dark: #0d2137;
  --color-primary-light: #2a5a8c;
  --color-accent: #c9a37f;
  --color-success: #28a745;
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fa;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-border: #e0e0e0;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', sans-serif;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --transition: 0.3s ease;

  /* ---- Base scale (mobile-first) ---- */
  --radius: 8px;
  --pad-x: 16px;
  --gap: 24px;
  --gap-lg: 40px;
  --section-pad: 60px;
  --header-h: 64px;
  --fs-body: 15px;
  --fs-lg: 17px;
  --fs-xl: 22px;
  --fs-2xl: 30px;
  --fs-3xl: 40px;
  --container: 100%;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); font-size: var(--fs-body); color: var(--color-text); background: var(--color-bg); line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
.container { width: var(--container); margin: 0 auto; padding: 0 var(--pad-x); }

/* ---- Desktop base (>=1200px) ---- */
@media (min-width: 1200px) {
  :root {
    --radius: 8px;
    --pad-x: 24px;
    --gap: 32px;
    --gap-lg: 60px;
    --section-pad: 88px;
    --header-h: 72px;
    --fs-body: 16px;
    --fs-lg: 18px;
    --fs-xl: 24px;
    --fs-2xl: 36px;
    --fs-3xl: 48px;
    --container: 1200px;
  }
}

/* ---- 2K Big desktop (>=1600px) ---- */
@media (min-width: 1600px) {
  :root {
    --pad-x: 40px;
    --gap: 40px;
    --gap-lg: 72px;
    --section-pad: 100px;
    --header-h: 84px;
    --fs-body: 17px;
    --fs-lg: 19px;
    --fs-xl: 26px;
    --fs-2xl: 40px;
    --fs-3xl: 54px;
    --container: 1520px;
  }
}

/* ---- Full HD / 2.5K (>=1920px) ---- */
@media (min-width: 1920px) {
  :root {
    --pad-x: 48px;
    --gap: 44px;
    --gap-lg: 80px;
    --section-pad: 110px;
    --header-h: 92px;
    --fs-body: 18px;
    --fs-lg: 20px;
    --fs-xl: 28px;
    --fs-2xl: 44px;
    --fs-3xl: 60px;
    --container: 1720px;
  }
}

/* ---- 4K UHD / 5K / 8K (>=2560px) ---- */
@media (min-width: 2560px) {
  :root {
    --pad-x: 64px;
    --gap: 52px;
    --gap-lg: 96px;
    --section-pad: 130px;
    --header-h: 108px;
    --fs-body: 20px;
    --fs-lg: 22px;
    --fs-xl: 30px;
    --fs-2xl: 52px;
    --fs-3xl: 72px;
    --container: 2400px;
  }
}

/* ===== Header ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; transition: var(--transition); }
.header-top { background: var(--color-primary-dark); color: rgba(255,255,255,0.8); font-size: calc(var(--fs-body) * 0.8); padding: calc(var(--header-h) * 0.08) 0; }
.header-top .container { display: flex; justify-content: space-between; align-items: center; }
.header-top-left, .header-top-right { display: flex; align-items: center; gap: 12px; }
.header-top-right a { color: rgba(255,255,255,0.8); transition: var(--transition); }
.header-top-right a:hover { color: #fff; }
.header-top-right .active { color: #fff; font-weight: 500; }
.header-main { background: var(--color-primary); padding: 0; }
.header.scrolled .header-main { box-shadow: 0 2px 20px rgba(0,0,0,0.15); }
.header-main .container { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: calc(var(--header-h) * 0.18); }
.logo-icon { width: calc(var(--header-h) * 0.62); height: calc(var(--header-h) * 0.62); background: var(--color-accent); color: #fff; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: calc(var(--fs-body) * 1.2); }
.logo-text { display: flex; flex-direction: column; }
.logo-name { color: #fff; font-size: calc(var(--fs-body) * 1.3); font-weight: 700; letter-spacing: 1px; }
.logo-en { color: rgba(255,255,255,0.7); font-size: calc(var(--fs-body) * 0.68); letter-spacing: 2px; }
.nav-list { display: flex; gap: 0; }
.nav-item > a { color: rgba(255,255,255,0.9); padding: calc(var(--header-h) * 0.5 - var(--fs-body) * 0.55) 18px; display: block; font-size: var(--fs-body); font-weight: 500; transition: var(--transition); position: relative; }
.nav-item > a::after { content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 3px; background: var(--color-accent); transition: var(--transition); transform: translateX(-50%); }
.nav-item:hover > a, .nav-item.active > a { color: #fff; }
.nav-item:hover > a::after, .nav-item.active > a::after { width: 70%; }
.dropdown { position: absolute; top: 100%; left: 0; background: #fff; min-width: 180px; border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: var(--transition); }
.has-dropdown { position: relative; }
.has-dropdown:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown li a { display: block; padding: calc(var(--fs-body) * 0.7) calc(var(--fs-body) * 1.2); font-size: calc(var(--fs-body) * 0.9); color: var(--color-text); transition: var(--transition); border-bottom: 1px solid var(--color-border); }
.dropdown li:last-child a { border-bottom: none; }
.dropdown li a:hover { background: var(--color-bg-alt); color: var(--color-primary); padding-left: calc(var(--fs-body) * 1.2 + 4px); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.search-btn { color: rgba(255,255,255,0.9); padding: 8px; transition: var(--transition); }
.search-btn:hover { color: #fff; }
.search-btn svg { width: calc(var(--fs-body) * 1.2); height: calc(var(--fs-body) * 1.2); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.menu-toggle span { display: block; height: 2px; background: #fff; width: 22px; transition: var(--transition); }
.search-overlay { position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 20px 0; box-shadow: var(--shadow); transform: translateY(-100%); opacity: 0; visibility: hidden; transition: var(--transition); z-index: 999; }
.search-overlay.active { transform: translateY(0); opacity: 1; visibility: visible; }
.search-form { display: flex; gap: 12px; max-width: 600px; margin: 0 auto; }
.search-input { flex: 1; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius); font-size: var(--fs-body); }
.search-input:focus { outline: none; border-color: var(--color-primary); }
.search-submit { padding: 12px 24px; background: var(--color-primary); color: #fff; border-radius: var(--radius); font-weight: 600; }
.search-close { font-size: 1.5rem; color: var(--color-text-light); padding: 8px; }

/* ===== Hero ===== */
.hero { position: relative; height: 100svh; min-height: 600px; overflow: hidden; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; display: flex; align-items: center; }
.hero-slide.active { opacity: 1; z-index: 1; }
.hero-slide::after { content: ''; position: absolute; inset: 0; background: rgba(13, 33, 55, 0.35); z-index: 1; }
.hero-slide:nth-child(1)::after { background: rgba(13, 33, 55, 0.45); }
.hero-content { position: relative; z-index: 2; max-width: calc(var(--container) * 0.45); min-width: min(78vw, 620px); padding-left: 10%; }
.hero-tag { display: inline-block; padding: 6px 16px; background: rgba(201,163,127,0.2); color: var(--color-accent); border-radius: 50px; font-size: calc(var(--fs-body) * 0.85); font-weight: 500; margin-bottom: 24px; border: 1px solid rgba(201,163,127,0.3); }
.hero-title { font-size: var(--fs-3xl); font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 20px; }
.hero-desc { font-size: var(--fs-lg); color: rgba(255,255,255,0.8); margin-bottom: 36px; line-height: 1.8; }
.hero-btns { display: flex; gap: 16px; }
.btn { display: inline-block; padding: calc(var(--fs-body) * 0.9) calc(var(--fs-body) * 2); border-radius: var(--radius); font-size: var(--fs-body); font-weight: 600; transition: var(--transition); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: #b8926e; transform: translateY(-2px); }
.btn-outline { border: 2px solid rgba(255,255,255,0.5); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.hero-nav { position: absolute; bottom: clamp(30px, 4vw, 60px); left: 50%; transform: translateX(-50%); z-index: 10; display: flex; align-items: center; gap: 20px; }
.hero-nav button { width: calc(var(--fs-body) * 2.4); height: calc(var(--fs-body) * 2.4); border-radius: 50%; border: 1px solid rgba(255,255,255,0.3); color: #fff; font-size: var(--fs-body); transition: var(--transition); }
.hero-nav button:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.hero-dots { display: flex; gap: 8px; }
.dot { width: calc(var(--fs-body) * 0.65); height: calc(var(--fs-body) * 0.65); border-radius: 50%; background: rgba(255,255,255,0.3); cursor: pointer; transition: var(--transition); }
.dot.active { background: var(--color-accent); width: calc(var(--fs-body) * 1.8); border-radius: 6px; }

/* ===== Stock Ticker ===== */
.stock-ticker { background: var(--color-bg-alt); padding: 16px 0; border-bottom: 1px solid var(--color-border); }
.ticker-wrapper { display: flex; align-items: center; gap: 32px; overflow-x: auto; }
.ticker-item { display: flex; flex-direction: column; min-width: fit-content; }
.ticker-label { font-size: calc(var(--fs-body) * 0.75); color: var(--color-text-light); }
.ticker-value { font-size: var(--fs-body); font-weight: 700; color: var(--color-text); }
.ticker-change { font-size: calc(var(--fs-body) * 0.85); font-weight: 600; }
.ticker-change.up { color: var(--color-success); }
.ticker-change.down { color: #dc3545; }
.ticker-more { margin-left: auto; color: var(--color-primary); font-weight: 600; white-space: nowrap; }

/* ===== Section ===== */
.section { padding: var(--section-pad) 0; }
.section-header { text-align: center; margin-bottom: var(--gap-lg); }
.section-tag { display: inline-block; font-size: calc(var(--fs-body) * 0.75); font-weight: 700; text-transform: uppercase; letter-spacing: 3px; color: var(--color-accent); margin-bottom: 12px; }
.section-title { font-size: var(--fs-2xl); font-weight: 700; color: var(--color-text); margin-bottom: 16px; }
.section-desc { color: var(--color-text-light); font-size: var(--fs-lg); max-width: 620px; margin: 0 auto; }

/* ===== About Section ===== */
.about-section { background: var(--color-bg); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-lg); align-items: center; }
.about-content .section-tag, .about-content .section-title { text-align: left; }
.about-text { color: var(--color-text-light); margin-bottom: 16px; font-size: var(--fs-body); }
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap); margin: 40px 0; }
.stat-item { text-align: center; }
.stat-number { font-size: var(--fs-2xl); font-weight: 900; color: var(--color-primary); display: inline; }
.stat-unit { font-size: var(--fs-lg); color: var(--color-accent); font-weight: 600; }
.stat-label { font-size: var(--fs-body); color: var(--color-text-light); margin-top: 4px; }
.about-img-placeholder { width: 100%; aspect-ratio: 4/5; background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; }
.about-img-inner { text-align: center; color: #fff; }
.about-year { display: block; font-size: var(--fs-lg); letter-spacing: 4px; opacity: 0.7; }
.about-year-num { display: block; font-size: calc(var(--fs-2xl) * 1.8); font-weight: 900; }

/* ===== Business Section ===== */
.business-section { background: var(--color-bg-alt); }
.business-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); gap: var(--gap); }
.business-card { background: #fff; padding: calc(var(--gap-lg) * 0.7) var(--gap); border-radius: var(--radius); box-shadow: var(--shadow); transition: var(--transition); text-align: center; }
.business-card:hover { transform: translateY(-8px); box-shadow: 0 12px 40px rgba(0,0,0,0.12); }
.business-icon { width: calc(var(--fs-2xl) * 2); height: calc(var(--fs-2xl) * 2); margin: 0 auto 20px; background: var(--color-bg-alt); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.business-icon svg { width: calc(var(--fs-xl) * 1.3); height: calc(var(--fs-xl) * 1.3); stroke: var(--color-primary); }
.business-card h3 { font-size: var(--fs-xl); margin-bottom: 12px; color: var(--color-text); }
.business-card p { color: var(--color-text-light); font-size: var(--fs-body); margin-bottom: 20px; }
.business-link { color: var(--color-primary); font-weight: 600; }

/* ===== News Section ===== */
.news-section { background: var(--color-bg); }
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-lg); }
.news-featured { display: flex; gap: 24px; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.news-img-placeholder { width: clamp(160px, 24%, 280px); min-height: 180px; background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%); display: flex; align-items: flex-start; justify-content: flex-end; padding: 16px; flex-shrink: 0; }
.news-date { text-align: center; color: #fff; }
.news-date .day { display: block; font-size: var(--fs-3xl); font-weight: 900; line-height: 1; }
.news-date .month { font-size: calc(var(--fs-body) * 0.8); opacity: 0.8; }
.news-info { padding: 24px; flex: 1; }
.news-category { display: inline-block; padding: 4px 10px; background: var(--color-bg-alt); color: var(--color-primary); font-size: calc(var(--fs-body) * 0.75); font-weight: 600; border-radius: 4px; margin-bottom: 12px; }
.news-info h3 { font-size: var(--fs-lg); margin-bottom: 10px; line-height: 1.5; }
.news-info p { color: var(--color-text-light); font-size: var(--fs-body); margin-bottom: 12px; }
.news-link { color: var(--color-primary); font-weight: 600; font-size: var(--fs-body); }
.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--color-border); transition: var(--transition); cursor: pointer; }
.news-item:hover { padding-left: 8px; }
.news-date-small { font-size: calc(var(--fs-body) * 0.85); color: var(--color-text-light); white-space: nowrap; min-width: 80px; }
.news-item-content h4 { font-size: var(--fs-body); font-weight: 500; transition: var(--transition); }
.news-item:hover .news-item-content h4 { color: var(--color-primary); }
.news-more { text-align: center; margin-top: 40px; }

/* ===== Investor Section ===== */
.investor-section { background: var(--color-bg-alt); }
.investor-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: var(--gap); }
.investor-card { background: #fff; padding: var(--gap) calc(var(--gap) * 0.8); border-radius: var(--radius); box-shadow: var(--shadow); transition: var(--transition); text-align: center; }
.investor-card:hover { transform: translateY(-6px); }
.investor-icon { width: calc(var(--fs-2xl) * 1.7); height: calc(var(--fs-2xl) * 1.7); margin: 0 auto 16px; background: var(--color-bg-alt); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.investor-icon svg { width: calc(var(--fs-xl) * 1.1); height: calc(var(--fs-xl) * 1.1); stroke: var(--color-primary); }
.investor-card h3 { font-size: var(--fs-lg); margin-bottom: 8px; }
.investor-card p { color: var(--color-text-light); font-size: var(--fs-body); margin-bottom: 16px; }
.investor-link { color: var(--color-primary); font-weight: 600; font-size: var(--fs-body); }

/* ===== Sustainability ===== */
.sustainability-section { background: var(--color-bg); }
.sustainability-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap-lg); align-items: center; }
.sustainability-content .section-tag, .sustainability-content .section-title { text-align: left; }
.sustainability-content p { color: var(--color-text-light); margin-bottom: 30px; }
.esg-stats { display: flex; gap: 40px; margin-bottom: 30px; }
.esg-item strong { display: block; font-size: var(--fs-2xl); font-weight: 900; color: var(--color-success); }
.esg-item span { font-size: var(--fs-body); color: var(--color-text-light); }
.sustainability-placeholder { width: 100%; aspect-ratio: 4/3; background: linear-gradient(135deg, var(--color-success) 0%, #1e7e34 100%); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: #fff; font-size: var(--fs-3xl); font-weight: 900; }

/* ===== Partners ===== */
.partners-section { background: var(--color-bg-alt); padding: 60px 0; overflow: hidden; }
.partners-track { overflow: hidden; }
.partners-slide { display: flex; gap: 40px; animation: scroll 20s linear infinite; }
.partner-logo { min-width: clamp(120px, 12vw, 220px); height: calc(var(--fs-lg) * 3.3); background: #fff; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: var(--color-text-light); font-weight: 600; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
@keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Partner banner image below partners section — full-width, 4K ready */
.partners-banner { width: 100vw; margin-left: calc(50% - 50vw); margin-top: calc(var(--gap-lg) * 1.2); overflow: hidden; position: relative; }
.partners-banner-img { width: 100%; height: auto; min-height: clamp(280px, 35vw, 720px); display: block; object-fit: cover; object-position: center; }

@media (min-width: 1920px) {
  .partners-banner-img { min-height: clamp(400px, 30vw, 900px); }
}
@media (min-width: 2560px) {
  .partners-banner-img { min-height: clamp(500px, 28vw, 1080px); }
}

/* ===== Footer ===== */
.footer { background: var(--color-primary-dark); color: rgba(255,255,255,0.8); }
.footer-main { padding: calc(var(--section-pad) * 0.7) 0 calc(var(--section-pad) * 0.45); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: var(--gap-lg); }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: var(--fs-body); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.social-link { width: calc(var(--fs-body) * 2.4); height: calc(var(--fs-body) * 2.4); border-radius: 50%; border: 1px solid rgba(255,255,255,0.3); display: flex; align-items: center; justify-content: center; font-size: calc(var(--fs-body) * 0.75); color: rgba(255,255,255,0.8); transition: var(--transition); }
.social-link:hover { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: var(--fs-lg); margin-bottom: 20px; font-weight: 600; }
.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: var(--fs-body); color: rgba(255,255,255,0.7); transition: var(--transition); }
.footer-links a:hover { color: var(--color-accent); padding-left: 4px; }
.contact-item { margin-bottom: 12px; }
.contact-label { display: block; font-size: var(--fs-body); color: rgba(255,255,255,0.5); margin-bottom: 4px; }
.footer-qr { margin-top: 20px; }
.qr-placeholder { width: calc(var(--fs-lg) * 5); height: calc(var(--fs-lg) * 5); background: rgba(255,255,255,0.1); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: var(--fs-body); color: rgba(255,255,255,0.5); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: calc(var(--fs-body) * 0.85); }
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--color-accent); }

/* ===== Back to Top ===== */
.back-to-top { position: fixed; bottom: 30px; right: 30px; width: calc(var(--fs-body) * 3); height: calc(var(--fs-body) * 3); background: var(--color-primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: var(--transition); z-index: 999; box-shadow: var(--shadow); }
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-4px); }
.back-to-top svg { width: calc(var(--fs-body) * 1.4); height: calc(var(--fs-body) * 1.4); }

/* ===== Animations ===== */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
html.no-js .fade-in, html:not(.js) .fade-in { opacity: 1; transform: none; }

/* ===== Responsive (narrow layouts) ===== */
@media (max-width: 1024px) {
  .nav-item > a { font-size: var(--fs-body); }
  .about-grid, .sustainability-grid, .news-grid { grid-template-columns: 1fr; gap: var(--gap-lg); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ticker-wrapper { gap: 24px; }
}
@media (max-width: 768px) {
  .header-top { display: none; }
  .menu-toggle { display: flex; }
  .nav { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--color-primary); padding: calc(var(--header-h) + 16px) 24px 24px; transform: translateX(-100%); transition: var(--transition); z-index: 998; overflow-y: auto; }
  .nav.active { transform: translateX(0); }
  .nav-list { flex-direction: column; gap: 0; }
  .nav-item > a { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: rgba(255,255,255,0.05); display: none; }
  .has-dropdown.open .dropdown { display: block; }
  .dropdown li a { color: rgba(255,255,255,0.7); border-color: rgba(255,255,255,0.05); }
  .hero-content { padding: 0 5%; max-width: 100%; }
  .hero-title { font-size: var(--fs-3xl); }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { text-align: center; }
  .news-featured { flex-direction: column; }
  .news-img-placeholder { width: 100%; min-height: 120px; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--gap); }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .esg-stats { flex-direction: column; gap: 20px; }
  .ticker-wrapper { flex-wrap: wrap; gap: 16px; }
}

/* ===== 4K / Ultrawide polish ===== */
@media (min-width: 1920px) {
  .hero-title { font-size: calc(var(--fs-3xl) * 1.15); }
  .hero-content { max-width: calc(var(--container) * 0.42); }
  .news-featured { gap: 32px; }
  .news-img-placeholder { width: clamp(200px, 28%, 360px); min-height: 220px; }
  .esg-stats { gap: 56px; }
  .about-stats { gap: 56px; }
}
@media (min-width: 2560px) {
  .hero-title { font-size: calc(var(--fs-3xl) * 1.2); }
  .hero-desc { margin-bottom: 48px; }
  .hero-btns { gap: 24px; }
  .ticker-wrapper { gap: 48px; }
  .business-card p, .about-text { line-height: 1.9; }
  .news-item { padding: 20px 0; gap: 24px; }
  .partner-logo { min-width: clamp(160px, 10vw, 240px); }
  .back-to-top { bottom: 48px; right: 48px; }
}