/* ===== 主题变量:紫色品牌 + 金色点缀 · 白天/夜间 ===== */
:root,
[data-theme="dark"] {
  /* 品牌紫 */
  --brand: #8b5cf6;
  --brand-2: #a855f7;
  --brand-deep: #5b21b6;
  --brand-glow: rgba(139, 92, 246, 0.45);
  /* 金色点缀 */
  --accent: #e9c372;
  --accent-2: #f4d99a;

  --bg: #080510;
  --bg-2: #0d0920;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --glass-bg: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);

  --text: #f3f0fb;
  --muted: #a79fc2;
  --muted-2: #7a7496;

  --up: #22d39a;
  --down: #ff5c72;

  --glow-a: rgba(139, 92, 246, 0.22);
  --glow-b: rgba(91, 33, 182, 0.2);
  --card-shadow: 0 24px 70px rgba(0, 0, 0, 0.5);
  --orb-opacity: 0.55;
}

[data-theme="light"] {
  --brand: #7c3aed;
  --brand-2: #8b5cf6;
  --brand-deep: #6d28d9;
  --brand-glow: rgba(124, 58, 237, 0.3);
  --accent: #c99a2e;
  --accent-2: #b8860b;

  --bg: #ffffff;
  --bg-2: #f6f4fb;
  --surface: #ffffff;
  --surface-2: #f5f2fc;
  --glass-bg: linear-gradient(160deg, #ffffff, #f6f4fb);
  --line: #ece7f6;
  --line-strong: #ddd4ef;

  --text: #140d24;
  --muted: #5b5473;
  --muted-2: #8a84a0;

  --up: #0a9d63;
  --down: #e5384a;

  --glow-a: rgba(139, 92, 246, 0.12);
  --glow-b: rgba(124, 58, 237, 0.08);
  --card-shadow: 0 20px 50px rgba(40, 20, 80, 0.1);
  --orb-opacity: 0.3;
}

:root {
  --radius: 20px;
  --radius-sm: 14px;
  --maxw: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.4s ease, color 0.4s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(60% 50% at 85% -5%, var(--glow-a), transparent 60%),
    radial-gradient(50% 45% at 5% 10%, var(--glow-b), transparent 55%),
    var(--bg);
  transition: background 0.4s ease;
}

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 780px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; position: relative;
  transition: transform 0.18s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: linear-gradient(135deg, var(--brand-2), var(--brand-deep));
  color: #fff; box-shadow: 0 10px 30px var(--brand-glow);
}
.btn--primary:hover { box-shadow: 0 14px 40px var(--brand-glow); }
.btn--gold {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  color: #3a2a08; box-shadow: 0 10px 30px color-mix(in srgb, var(--accent) 40%, transparent);
}
.btn--gold:hover { box-shadow: 0 14px 40px color-mix(in srgb, var(--accent) 55%, transparent); }
.btn--ghost { background: var(--surface); border-color: var(--line-strong); color: var(--text); }
.btn--ghost:hover { border-color: var(--brand); background: var(--surface-2); }
.btn--lg { padding: 15px 32px; font-size: 16px; }
.btn--block { width: 100%; }

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: background 0.25s, border-color 0.25s;
}
.nav.scrolled { background: color-mix(in srgb, var(--bg) 88%, transparent); border-color: var(--line); }
.nav__inner { display: flex; align-items: center; gap: 20px; height: 72px; }

.logo { display: flex; align-items: center; gap: 11px; font-size: 21px; font-weight: 700; letter-spacing: -0.3px; margin-right: auto; }
.logo__mark {
  width: 28px; height: 28px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-deep));
  box-shadow: 0 6px 18px var(--brand-glow), inset 0 1px 0 rgba(255,255,255,0.4);
  position: relative;
}
.logo__mark::after {
  content: ""; position: absolute; inset: 7px; border-radius: 4px;
  background: linear-gradient(135deg, #fff, rgba(255,255,255,0.3)); opacity: 0.9;
}
.logo__text strong {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.logo__img { height: 36px; width: auto; max-width: 180px; display: block; }
.logo.has-img .logo__mark { display: none; }
.logo__text.is-hidden { display: none; }

.nav__links { display: flex; gap: 30px; }
.nav__links a { font-size: 15px; color: var(--muted); font-weight: 500; transition: color 0.15s; }
.nav__links a:hover { color: var(--text); }

.nav__actions { display: flex; gap: 12px; align-items: center; }

/* 主题切换按钮 */
.theme-toggle {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  display: grid; place-items: center; cursor: pointer;
  background: var(--surface); border: 1px solid var(--line-strong); color: var(--text);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.theme-toggle:hover { border-color: var(--brand); transform: translateY(-2px); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.25s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; padding: 92px 0 96px; }
.hero__orbs { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: var(--orb-opacity); }
.orb--1 { width: 420px; height: 420px; background: radial-gradient(circle, var(--brand-2), transparent 70%); top: -80px; right: -60px; animation: drift 14s ease-in-out infinite; }
.orb--2 { width: 360px; height: 360px; background: radial-gradient(circle, var(--brand-deep), transparent 70%); bottom: -120px; left: -40px; animation: drift 18s ease-in-out infinite reverse; }
@keyframes drift { 0%,100% { transform: translate(0,0); } 50% { transform: translate(30px, 40px); } }

.hero__inner { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 60px; align-items: center; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent); padding: 7px 16px;
  border-radius: 999px; margin-bottom: 24px; border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.hero__badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.hero__title { font-size: 56px; line-height: 1.1; font-weight: 800; letter-spacing: -1px; }
.hero__title em { font-style: normal; background: linear-gradient(135deg, var(--brand), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__sub { font-size: 18px; color: var(--muted); margin: 22px 0 32px; max-width: 540px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__trust { list-style: none; display: flex; gap: 24px; flex-wrap: wrap; margin-top: 30px; color: var(--muted); font-size: 14px; font-weight: 500; }
.hero__trust li::before { content: "✦ "; color: var(--accent); }

/* 行情卡片 */
.hero__visual { display: flex; justify-content: center; }
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--card-shadow); backdrop-filter: blur(10px);
}
.quote-card { width: 100%; max-width: 400px; padding: 24px; animation: floaty 7s ease-in-out infinite; position: relative; }
.quote-card::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius); padding: 1px;
  background: linear-gradient(160deg, var(--brand-glow), transparent 40%, color-mix(in srgb, var(--accent) 30%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.quote-card__head { display: flex; align-items: center; justify-content: space-between; font-weight: 600; color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.quote-card__head .live { display: flex; align-items: center; gap: 7px; color: var(--up); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--up); box-shadow: 0 0 0 4px color-mix(in srgb, var(--up) 20%, transparent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 3px color-mix(in srgb, var(--up) 25%, transparent);} 50% { box-shadow: 0 0 0 7px transparent;} }
.quote-list { list-style: none; }
.quote-list li { display: flex; align-items: center; justify-content: space-between; padding: 13px 2px; border-bottom: 1px solid var(--line); }
.quote-list li:last-child { border-bottom: none; }
.q-sym { display: flex; align-items: center; gap: 12px; font-weight: 600; font-size: 15px; }
.q-ic { width: 38px; height: 38px; border-radius: 11px; overflow: hidden; flex: none; display: block; box-shadow: 0 4px 12px rgba(0,0,0,0.25); }
.q-ic svg { display: block; width: 100%; height: 100%; }
.q-sym small { color: var(--muted-2); font-weight: 500; }
.q-price { text-align: right; font-variant-numeric: tabular-nums; }
.q-price b { display: block; font-size: 15px; }
.q-price span { font-size: 13px; font-weight: 600; }
.up { color: var(--up); }
.down { color: var(--down); }

/* ===== 数据条 ===== */
.stats { padding: 30px 0; }
.stats__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.stat { background: var(--bg-2); padding: 30px 20px; text-align: center; }
.stat__num {
  display: block; font-size: 40px; font-weight: 800; line-height: 1;
  background: linear-gradient(135deg, var(--text), var(--brand)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat__label { font-size: 14px; color: var(--muted); margin-top: 8px; }

/* ===== 通用 section ===== */
.section { padding: 96px 0; }
.section__head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.eyebrow { display: inline-block; color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 14px; }
.section__head h2 { font-size: 40px; font-weight: 800; letter-spacing: -0.8px; line-height: 1.15; }
.section__head p { color: var(--muted); font-size: 17px; margin-top: 14px; }
.section__cta { text-align: center; margin-top: 50px; }
.muted { color: var(--muted); font-size: 14px; margin-top: 12px; }

/* ===== 卡片通用 ===== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; transition: transform 0.25s, border-color 0.25s, background 0.25s, box-shadow 0.25s;
  position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-glow), transparent); opacity: 0; transition: opacity 0.3s;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-strong); box-shadow: var(--card-shadow); }
.card:hover::after { opacity: 1; }
.card__icon {
  width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center; font-size: 26px;
  background: color-mix(in srgb, var(--brand) 20%, transparent);
  border: 1px solid var(--line-strong); margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 9px; }
.card p { color: var(--muted); font-size: 15px; }

/* ===== 交易市场 ===== */
.markets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.market {
  border-radius: var(--radius); padding: 30px; position: relative; overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line); transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.market:hover { transform: translateY(-6px); border-color: var(--brand); box-shadow: var(--card-shadow); }
.market__glow { position: absolute; width: 160px; height: 160px; border-radius: 50%; filter: blur(60px); top: -40px; right: -40px; opacity: 0.4; }
.market__ic { width: 58px; height: 58px; margin-bottom: 18px; position: relative; }
.market__ic svg { display: block; width: 100%; height: 100%; border-radius: 16px; box-shadow: 0 8px 20px rgba(0,0,0,0.25); }
.market h3 { font-size: 22px; margin-bottom: 10px; }
.market p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.market__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.market__tags span { font-size: 12.5px; color: var(--muted); background: var(--surface-2); border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }

/* ===== 赚钱计划 / 增值 ===== */
.earn { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.earn-card {
  border-radius: var(--radius); padding: 32px 28px; position: relative;
  background: var(--surface); border: 1px solid var(--line); transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.earn-card:hover { transform: translateY(-6px); border-color: var(--accent); box-shadow: var(--card-shadow); }
.earn-card__rate { font-size: 34px; font-weight: 800; background: linear-gradient(135deg, var(--accent-2), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }
.earn-card__rate small { font-size: 15px; color: var(--muted); -webkit-text-fill-color: var(--muted); margin-left: 4px; }
.earn-card h3 { font-size: 20px; margin: 16px 0 8px; }
.earn-card p { color: var(--muted); font-size: 15px; }

/* ===== 永续合约 highlight ===== */
.futures__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.futures__text h2 { font-size: 40px; font-weight: 800; letter-spacing: -0.8px; margin: 10px 0 16px; }
.futures__text > p { color: var(--muted); font-size: 17px; margin-bottom: 24px; }
.checklist { list-style: none; margin-bottom: 32px; }
.checklist li { padding: 9px 0 9px 32px; position: relative; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 10px; color: #fff; font-size: 12px; font-weight: 700;
  width: 21px; height: 21px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-deep));
}
.futures__visual { display: flex; justify-content: center; }
.trade-card { width: 100%; max-width: 380px; padding: 26px; }
.trade-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.trade-card__pair { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; }
.trade-card__long { font-size: 13px; font-weight: 700; color: var(--up); background: color-mix(in srgb, var(--up) 14%, transparent); padding: 5px 12px; border-radius: 999px; }
.trade-card__price { font-size: 32px; font-weight: 800; font-variant-numeric: tabular-nums; }
.trade-card__chg { color: var(--up); font-weight: 600; margin-left: 10px; font-size: 15px; }
.trade-bars { display: flex; align-items: flex-end; gap: 5px; height: 90px; margin: 22px 0; }
.trade-bars span { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, var(--brand-2), color-mix(in srgb, var(--brand) 15%, transparent)); animation: bar 2.4s ease-in-out infinite; }
@keyframes bar { 0%,100% { transform: scaleY(0.65); transform-origin: bottom; } 50% { transform: scaleY(1); } }
.trade-card__row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.trade-card__row div { background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.trade-card__row small { color: var(--muted); font-size: 12px; display: block; }
.trade-card__row b { font-size: 16px; }

/* ===== 步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 28px; position: relative; }
.step__n {
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px;
  background: color-mix(in srgb, var(--brand) 20%, transparent);
  border: 1px solid var(--line-strong); color: var(--accent); font-weight: 800; font-size: 20px; margin-bottom: 18px;
}
.step h3 { font-size: 19px; margin-bottom: 9px; }
.step p { color: var(--muted); font-size: 15px; }

/* ===== FAQ ===== */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq__item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 4px 22px; transition: border-color 0.2s; }
.faq__item[open] { border-color: var(--line-strong); }
.faq__item summary { cursor: pointer; font-weight: 600; padding: 18px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; font-size: 24px; color: var(--accent); font-weight: 300; transition: transform 0.25s; }
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p { color: var(--muted); padding: 0 0 18px; font-size: 15px; }

/* ===== CTA band ===== */
.cta-band { padding: 40px 0 100px; }
.cta-band__inner {
  position: relative; overflow: hidden; text-align: center; padding: 64px 32px; border-radius: 28px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 18%, transparent), color-mix(in srgb, var(--brand-deep) 12%, transparent));
  border: 1px solid var(--line-strong);
}
.cta-band__inner::before { content: ""; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, var(--brand-glow), transparent 70%); top: -200px; left: 50%; transform: translateX(-50%); filter: blur(40px); }
.cta-band h2 { font-size: 38px; font-weight: 800; letter-spacing: -0.8px; position: relative; }
.cta-band p { font-size: 18px; color: var(--muted); margin: 14px 0 30px; position: relative; }
.cta-band__btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); padding: 64px 0 32px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--line); }
.footer__brand p { font-size: 14px; color: var(--muted); margin-top: 16px; max-width: 320px; }
.footer__col h5 { color: var(--text); font-size: 15px; margin-bottom: 16px; }
.footer__col a { display: block; font-size: 14px; padding: 6px 0; color: var(--muted); transition: color 0.15s; }
.footer__col a:hover { color: var(--accent); }
.footer__bottom { padding-top: 24px; }
.risk { font-size: 12.5px; color: var(--muted-2); line-height: 1.7; }
.copyright { font-size: 13px; color: var(--muted-2); margin-top: 14px; }

/* ===== 悬浮客服按钮 ===== */
.service-fab {
  position: fixed; right: 24px; bottom: 24px; z-index: 200;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 20px 13px 17px; border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-deep));
  color: #fff; font-size: 15px; font-weight: 600;
  box-shadow: 0 12px 30px var(--brand-glow);
  transition: transform 0.2s ease, box-shadow 0.25s ease;
  animation: fabIn 0.4s ease both;
}
.service-fab:hover { transform: translateY(-3px); box-shadow: 0 16px 40px var(--brand-glow); }
.service-fab svg { width: 22px; height: 22px; }
.service-fab[hidden] { display: none; }
@keyframes fabIn { from { opacity: 0; transform: translateY(20px) scale(0.9); } to { opacity: 1; transform: none; } }
@media (max-width: 640px) {
  .service-fab { right: 16px; bottom: 16px; padding: 13px; }
  .service-fab span { display: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 940px) {
  .hero__inner, .futures__inner { grid-template-columns: 1fr; }
  .hero__visual, .futures__visual { order: -1; }
  .cards, .markets, .earn, .steps { grid-template-columns: repeat(2, 1fr); }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav__links, .nav__actions { display: none; }
  .nav__toggle { display: flex; }
  .nav__links.open {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--bg); padding: 16px 24px; gap: 2px; border-bottom: 1px solid var(--line);
  }
  .nav__links.open a { padding: 13px 0; border-bottom: 1px solid var(--line); }
  .hero { padding: 56px 0 64px; }
  .hero__title { font-size: 38px; }
  .hero__sub { font-size: 16px; }
  .section { padding: 64px 0; }
  .section__head h2, .futures__text h2, .cta-band h2 { font-size: 29px; }
  .cards, .markets, .earn, .steps { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-band__inner { padding: 48px 22px; }
}