/* =========================================================
   丹东市冶金重型机械厂 — 官网样式
   主题色在 :root 中修改即可整体换色
   ========================================================= */
:root {
  --steel-950: #070b14;
  --steel-900: #0b1220;
  --steel-800: #111a2e;
  --steel-700: #1c2840;
  --steel-500: #4a5a78;
  --steel-300: #a3b0c6;
  --paper: #ffffff;
  --paper-alt: #f3f5f8;
  --ink: #0f172a;
  --ink-soft: #475569;
  --line: #e2e8f0;
  --accent: #e8622c;      /* 钢水橙 */
  --accent-2: #f5a742;
  --accent-deep: #b9431a;

  --radius: 14px;
  --shadow: 0 20px 50px -20px rgba(15, 23, 42, .25);
  --header-h: 76px;
  --ease: cubic-bezier(.2, .7, .2, 1);

  /* 不依赖外部字体，国内外访问均流畅 */
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, h5 { margin: 0; line-height: 1.25; font-family: var(--font-display); }
p { margin: 0 0 1em; }

.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
.text-accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 语言专属内容 */
html[lang="en"] .zh-only { display: none !important; }
html:not([lang="en"]) .en-only { display: none !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: all .3s var(--ease);
  font-family: inherit; white-space: nowrap;
}
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-accent { background: linear-gradient(135deg, var(--accent), var(--accent-deep)); color: #fff; box-shadow: 0 10px 30px -10px rgba(232, 98, 44, .7); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(232, 98, 44, .85); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.1); border-color: #fff; }
.btn-dark { background: var(--steel-900); color: #fff; }
.btn-dark:hover { background: var(--steel-950); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header-h);
  display: flex; align-items: center; color: #fff;
  transition: background .35s var(--ease), box-shadow .35s, height .35s;
}
.site-header.scrolled {
  background: rgba(11, 18, 32, .88); backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(255,255,255,.06); height: 64px;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 40px; height: 40px; color: var(--accent); flex: none; }
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 17px; letter-spacing: .02em; }
.brand-text small { font-size: 11px; opacity: .6; letter-spacing: .12em; text-transform: uppercase; }

.main-nav { display: flex; gap: 30px; }
.main-nav a { font-size: 15px; opacity: .82; position: relative; padding: 6px 0; transition: opacity .2s; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.main-nav a:hover, .main-nav a.active { opacity: 1; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch { display: flex; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 3px; }
.lang-switch button {
  background: none; border: 0; color: #fff; font: 600 13px var(--font);
  padding: 5px 12px; border-radius: 999px; cursor: pointer; opacity: .65; transition: all .25s;
}
.lang-switch button.active { background: var(--accent); opacity: 1; }

.nav-toggle { display: none; background: none; border: 0; width: 36px; height: 36px; cursor: pointer; padding: 6px; }
.nav-toggle span { display: block; height: 2px; background: #fff; margin: 6px 0; transition: .3s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  color: #fff; background: var(--steel-950); overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 40px;
}
.hero-bg { position: absolute; inset: 0; }
.hero-img { width: 100%; height: 100%; object-fit: cover; opacity: .38; transform: scale(1.06); animation: heroZoom 18s ease-out forwards; }
.hero-img.is-missing { display: none; }
@keyframes heroZoom { to { transform: scale(1); } }
.hero-glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 50% at 85% 85%, rgba(232, 98, 44, .45), transparent 70%),
    radial-gradient(40% 40% at 10% 10%, rgba(74, 90, 120, .45), transparent 70%),
    linear-gradient(180deg, rgba(7,11,20,.55) 0%, rgba(7,11,20,.2) 40%, rgba(7,11,20,.92) 100%);
}
.hero-grid {
  position: absolute; inset: 0; opacity: .12;
  background-image: linear-gradient(rgba(255,255,255,.4) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.4) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
}
.hero-content { position: relative; max-width: 1200px; }
.eyebrow { font-size: 13px; letter-spacing: .3em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 22px; }
.hero-title { font-size: clamp(38px, 6.4vw, 84px); font-weight: 800; letter-spacing: -.01em; max-width: 14em; }
.hero-sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--steel-300); max-width: 620px; margin: 26px 0 38px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  position: relative; list-style: none; margin: 80px 0 0; padding: 30px 0 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b { font-size: clamp(28px, 3.4vw, 44px); font-family: var(--font-display); font-weight: 700; }
.hero-stats span { font-size: 14px; color: var(--steel-300); }

.scroll-hint { position: absolute; left: 50%; bottom: 22px; width: 24px; height: 38px; border: 2px solid rgba(255,255,255,.4); border-radius: 12px; transform: translateX(-50%); }
.scroll-hint span { position: absolute; left: 50%; top: 7px; width: 4px; height: 8px; background: #fff; border-radius: 2px; transform: translateX(-50%); animation: scrollDot 1.8s infinite; }
@keyframes scrollDot { 0% { opacity: 0; top: 6px; } 40% { opacity: 1; } 100% { opacity: 0; top: 20px; } }

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 10vw, 130px) 0; position: relative; }
.section-alt { background: var(--paper-alt); }
.section-dark { background: var(--steel-900); color: #fff; }
.section-dark .section-desc, .section-dark p { color: var(--steel-300); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto clamp(40px, 6vw, 64px); }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: .25em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; }
.section-title { font-size: clamp(28px, 3.6vw, 44px); font-weight: 800; margin-bottom: 18px; }
.section-desc { font-size: 17px; color: var(--ink-soft); }

/* ---------- Media placeholder ---------- */
.media {
  position: relative; overflow: hidden; border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(232,98,44,.12), transparent 50%),
    repeating-linear-gradient(45deg, #1c2840 0 14px, #18233a 14px 28px);
  aspect-ratio: 4 / 3;
}
.media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); position: relative; z-index: 1; }
.media.is-empty img { display: none; }
.media-label {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center; padding: 12px;
  color: rgba(255,255,255,.55); font-size: 13px; letter-spacing: .08em;
}
.media:not(.is-empty) .media-label { display: none; }
.media-tall { aspect-ratio: 4 / 5; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: clamp(40px, 7vw, 96px); align-items: center; }
.about-media { position: relative; }
.about-media .media { box-shadow: var(--shadow); }
.about-badge {
  position: absolute; right: -24px; bottom: 40px; z-index: 2;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep)); color: #fff;
  padding: 22px 26px; border-radius: var(--radius); box-shadow: var(--shadow);
  display: flex; flex-direction: column; max-width: 180px;
}
.about-badge b { font-size: 44px; line-height: 1; font-family: var(--font-display); }
.about-badge span { font-size: 13px; opacity: .9; margin-top: 6px; }
.about-text p { color: var(--ink-soft); font-size: 16px; }
.check-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; }
.check-list li { position: relative; padding-left: 30px; font-weight: 600; font-size: 15px; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(232,98,44,.12); color: var(--accent); font-size: 12px; display: grid; place-items: center;
}

/* ---------- Products ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: var(--steel-800); border: 1px solid rgba(255,255,255,.06); border-radius: var(--radius);
  overflow: hidden; transition: transform .4s var(--ease), border-color .4s, box-shadow .4s;
}
.product-card .media { border-radius: 0; aspect-ratio: 16 / 10; }
.product-card:hover { transform: translateY(-6px); border-color: rgba(232,98,44,.5); box-shadow: 0 30px 60px -30px rgba(232,98,44,.5); }
.product-card:hover .media img { transform: scale(1.06); }
.product-body { padding: 26px 26px 30px; position: relative; }
.product-no { position: absolute; right: 24px; top: 20px; font: 800 34px var(--font-display); color: rgba(255,255,255,.06); }
.product-body h3 { font-size: 20px; margin-bottom: 10px; color: #fff; }
.product-body p { font-size: 14.5px; margin: 0; }

/* ---------- Capability ---------- */
.process {
  list-style: none; padding: 0; margin: 0 0 64px; counter-reset: s;
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 0; position: relative;
}
.process::before { content: ""; position: absolute; left: 8%; right: 8%; top: 27px; height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); opacity: .35; }
.process li { text-align: center; padding: 0 10px; position: relative; }
.process-no {
  width: 56px; height: 56px; border-radius: 50%; margin: 0 auto 18px; display: grid; place-items: center;
  background: #fff; border: 2px solid var(--accent); color: var(--accent); font: 700 16px var(--font-display);
  position: relative; transition: all .3s;
}
.process li:hover .process-no { background: var(--accent); color: #fff; transform: scale(1.08); }
.process h4 { font-size: 17px; margin-bottom: 6px; }
.process p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

.gallery { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: 240px 240px; gap: 18px; }
.gallery .media { aspect-ratio: auto; }
.gallery .media:hover img { transform: scale(1.05); }
.g-a { grid-row: span 2; }
.g-d { grid-column: span 2; }

/* ---------- Quality ---------- */
.quality-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 90px); align-items: center; }
.quality-grid > div > p { color: var(--ink-soft); }
.quality-points { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.quality-points li { display: flex; flex-direction: column; padding: 16px 20px; background: #fff; border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0; }
.quality-points b { font-size: 16px; }
.quality-points span { font-size: 14px; color: var(--ink-soft); }
.cert-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.cert {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 22px;
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 6px; transition: all .3s var(--ease);
}
.cert:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.cert-icon {
  width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 8px;
  background: linear-gradient(135deg, var(--steel-800), var(--steel-700)); color: var(--accent-2); font: 800 16px var(--font-display);
}
.cert b { font-size: 17px; }
.cert span { font-size: 13px; color: var(--ink-soft); }

/* ---------- Projects ---------- */
.markets { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-bottom: 40px; }
.market { display: flex; gap: 20px; align-items: flex-start; padding: 28px; border-radius: var(--radius); background: linear-gradient(135deg, var(--steel-800), var(--steel-700)); border: 1px solid rgba(255,255,255,.06); }
.market-flag { flex: none; width: 54px; height: 54px; border-radius: 12px; display: grid; place-items: center; font: 800 17px var(--font-display); background: rgba(232,98,44,.15); color: var(--accent-2); }
.market b { font-size: 19px; display: block; margin-bottom: 6px; }
.market p { margin: 0; font-size: 14.5px; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case { border-radius: var(--radius); overflow: hidden; background: var(--steel-800); transition: transform .4s var(--ease); }
.case:hover { transform: translateY(-6px); }
.case .media { border-radius: 0; aspect-ratio: 16 / 11; }
.case-body { padding: 22px 24px 26px; }
.tag { display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; background: rgba(232,98,44,.15); color: var(--accent-2); margin-bottom: 12px; }
.case h3 { font-size: 18px; margin-bottom: 8px; }
.case p { font-size: 14px; margin: 0; }

/* ---------- Why ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why { padding: 34px 26px; border: 1px solid var(--line); border-radius: var(--radius); transition: all .35s var(--ease); position: relative; overflow: hidden; }
.why::after { content: ""; position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.why:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-4px); }
.why:hover::after { transform: scaleX(1); }
.why-icon { width: 52px; height: 52px; border-radius: 12px; background: rgba(232,98,44,.1); color: var(--accent); display: grid; place-items: center; font-size: 24px; margin-bottom: 20px; }
.why h4 { font-size: 18px; margin-bottom: 10px; }
.why p { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* ---------- CTA ---------- */
.cta-band { background: linear-gradient(120deg, var(--accent-deep), var(--accent) 55%, var(--accent-2)); color: #fff; padding: 60px 0; position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(-45deg, rgba(255,255,255,.05) 0 2px, transparent 2px 22px); }
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(26px, 3vw, 36px); margin-bottom: 8px; }
.cta-inner p { margin: 0; opacity: .92; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 16px; align-items: center; }
.ci { flex: none; width: 46px; height: 46px; border-radius: 12px; background: var(--steel-900); color: var(--accent-2); display: grid; place-items: center; font-size: 17px; font-weight: 700; }
.contact-list small { display: block; color: var(--ink-soft); font-size: 13px; }
.contact-list b { font-size: 16px; }
.qr-row { display: flex; align-items: center; gap: 18px; margin-top: 30px; }
.qr { width: 120px; aspect-ratio: 1; border-radius: 10px; }
.qr-row p { margin: 0; color: var(--ink-soft); font-size: 14px; }

.contact-form { background: var(--paper-alt); padding: clamp(26px, 4vw, 42px); border-radius: 20px; display: grid; gap: 16px; }
.contact-form h3 { font-size: 22px; margin-bottom: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--ink-soft); }
.contact-form input, .contact-form select, .contact-form textarea {
  font: 15px var(--font); padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
  transition: border-color .2s, box-shadow .2s; width: 100%;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,98,44,.15); }
.form-note { font-size: 12.5px; color: var(--ink-soft); margin: 0; text-align: center; }
.form-note.ok { color: #1f8a4c; font-weight: 600; }
.form-note.err { color: #c0392b; font-weight: 600; }
.contact-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.contact-form button[disabled] { opacity: .6; cursor: wait; }
.map { margin-top: 60px; aspect-ratio: 21 / 7; }

/* ---------- Footer ---------- */
.site-footer { background: var(--steel-950); color: var(--steel-300); padding: 70px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.3fr; gap: 40px; padding-bottom: 50px; }
.brand-footer { color: #fff; margin-bottom: 18px; }
.footer-about { max-width: 360px; }
.site-footer h5 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.site-footer a:not(.brand) { display: block; margin-bottom: 8px; transition: color .2s; }
.site-footer a:hover { color: var(--accent-2); }
.site-footer p { margin: 0 0 8px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 22px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer-bottom a { display: inline !important; margin: 0 !important; }

.back-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90; width: 46px; height: 46px; border-radius: 50%;
  background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 20px;
  box-shadow: 0 10px 24px -8px rgba(232,98,44,.7); opacity: 0; transform: translateY(16px); pointer-events: none; transition: all .35s var(--ease);
}
.back-top.show { opacity: 1; transform: none; pointer-events: auto; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-img { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .main-nav { gap: 20px; }
  .main-nav a { font-size: 14px; }
  .process { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .process::before { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .hide-mobile { display: none; }
  .main-nav {
    position: fixed; inset: 64px 0 auto; flex-direction: column; gap: 0; padding: 12px 16px 24px;
    background: rgba(11,18,32,.97); backdrop-filter: blur(14px);
    transform: translateY(-120%); transition: transform .4s var(--ease); z-index: -1;
  }
  .nav-open .main-nav { transform: none; }
  .main-nav a { padding: 14px 4px; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 16px; }
  .main-nav a::after { display: none; }
  .site-header { background: rgba(11,18,32,.88); backdrop-filter: blur(14px); height: 64px; }

  .about-grid, .quality-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-badge { right: 16px; }
  .product-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .markets { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); row-gap: 26px; margin-top: 56px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: span 2; }
}
@media (max-width: 600px) {
  .brand-text small { display: none; }
  .brand-text strong { font-size: 15px; }
  .product-grid, .case-grid, .why-grid, .cert-grid, .form-row, .check-list { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 200px 140px 140px; }
  .g-a { grid-row: auto; grid-column: span 2; }
  .g-d { grid-column: span 2; }
  .map { aspect-ratio: 4 / 3; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:first-child { grid-column: auto; }
  .scroll-hint { display: none; }
}