/* DockerDownloader 官网 —— 设计令牌与应用内 styles.css 保持一致 */
:root {
  --primary: #2563eb;
  --brand-strong: #1d4ed8;
  --brand-deep: #1e40af;
  --brand-weak: #eff6ff;
  --brand-soft: #dbeafe;
  --success: #059669;
  --warning: #d97706;
  --destructive: #dc2626;

  --bg: #f5f6f8;
  --card: #ffffff;
  --inset: #f1f2f4;
  --fg: #0f172a;
  --muted: #64748b;
  --faint: #94a3b8;
  --border: rgba(15, 23, 42, 0.08);

  --radius: 12px;
  --wrap: 1160px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 8px 24px -12px rgba(15, 23, 42, 0.22);
  --shadow-lg: 0 40px 80px -30px rgba(15, 23, 42, 0.35), 0 4px 14px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--fg);
  background: var(--card);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.02em; line-height: 1.22; }
p { margin: 0; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--brand-weak); color: var(--brand-strong); padding: 0.1em 0.38em; border-radius: 5px; }
ol, ul, dl { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap--narrow { max-width: 820px; }

/* ---------------- nav ---------------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.nav.is-stuck { border-bottom-color: var(--border); box-shadow: 0 1px 12px rgba(15, 23, 42, 0.05); }
.nav__inner { display: flex; align-items: center; gap: 28px; height: 64px; }
.nav__brand { display: inline-flex; align-items: center; gap: 9px; font-size: 16.5px; font-weight: 700; letter-spacing: -0.02em; }
.nav__brand img { border-radius: 8px; }
.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a { position: relative; padding: 7px 12px; border-radius: 8px; font-size: 14.5px; color: var(--muted); font-weight: 500; transition: color 0.18s, background 0.18s; }
.nav__links a:hover { color: var(--fg); background: var(--inset); }
.nav__links a.is-here { color: var(--primary); }
.nav__cta { display: flex; align-items: center; }

/* ---------------- buttons ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 10px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
  padding: 11px 20px; cursor: pointer;
  transition: transform 0.16s, box-shadow 0.16s, background 0.16s, color 0.16s, border-color 0.16s;
}
.btn svg { width: 17px; height: 17px; }
.btn--sm { padding: 8px 14px; font-size: 14px; border-radius: 9px; }
.btn--lg { padding: 14px 26px; font-size: 16.5px; border-radius: 12px; }
.btn--primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px -8px rgba(37, 99, 235, 0.75); }
.btn--primary:hover { background: var(--brand-strong); transform: translateY(-1px); box-shadow: 0 12px 26px -10px rgba(37, 99, 235, 0.7); }
.btn--ghost { background: var(--card); color: var(--fg); border-color: var(--border); box-shadow: var(--shadow-sm); }
.btn--ghost:hover { border-color: rgba(15, 23, 42, 0.2); transform: translateY(-1px); }
.btn--invert { background: #fff; color: var(--brand-deep); box-shadow: 0 12px 30px -12px rgba(0, 0, 0, 0.5); }
.btn--invert:hover { transform: translateY(-1px); background: var(--brand-soft); }

/* ---------------- hero ---------------- */
.hero { position: relative; padding: 78px 0 26px; overflow: hidden; }
.hero__glow {
  position: absolute; top: -280px; left: 50%; transform: translateX(-50%);
  width: 1200px; height: 700px; pointer-events: none;
  background: radial-gradient(closest-side, rgba(37, 99, 235, 0.16), rgba(37, 99, 235, 0) 72%);
}
.hero__head { position: relative; text-align: center; max-width: 780px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 13px 5px 9px; border-radius: 999px;
  background: var(--brand-weak); color: var(--brand-strong);
  border: 1px solid rgba(37, 99, 235, 0.16);
  font-size: 13px; font-weight: 600; letter-spacing: 0.01em;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.18); }
.hero h1 { font-size: clamp(38px, 6.2vw, 64px); font-weight: 800; letter-spacing: -0.035em; margin: 22px 0 0; }
.hero .lead { margin: 20px auto 0; max-width: 660px; font-size: 18.5px; color: var(--muted); line-height: 1.72; }
.hero .lead code { font-size: 0.86em; white-space: nowrap; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 32px; }
.hero__meta { margin-top: 14px; font-size: 13.5px; color: var(--faint); font-family: var(--mono); }

/* ---------------- app window mock ---------------- */
.shot { margin: 54px 0 0; }
.shot figcaption { margin-top: 16px; text-align: center; font-size: 13px; color: var(--faint); }
.window {
  border-radius: 16px; overflow: hidden; background: var(--bg);
  border: 1px solid rgba(15, 23, 42, 0.1); box-shadow: var(--shadow-lg);
}
.window__bar { display: flex; align-items: center; gap: 12px; height: 40px; padding: 0 14px; background: linear-gradient(#fbfbfc, #f4f5f7); border-bottom: 1px solid var(--border); }
.dots { display: inline-flex; gap: 7px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: #dfe3e8; }
.dots i:nth-child(1) { background: #ff5f57; } .dots i:nth-child(2) { background: #febc2e; } .dots i:nth-child(3) { background: #28c840; }
.window__title { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.window__bar-space { flex: 1; }
.window__body { display: flex; height: 528px; }

.m-side { width: 176px; flex: none; padding: 14px 10px 10px; display: flex; flex-direction: column; background: var(--bg); }
.m-brand { padding: 0 8px; margin-bottom: 18px; font-size: 13.5px; font-weight: 700; letter-spacing: -0.01em; }
.m-brand span { display: block; margin-top: 3px; font-size: 8.5px; font-weight: 600; letter-spacing: 0.14em; color: var(--faint); }
.m-nav { display: flex; flex-direction: column; gap: 3px; }
.m-nav__item { display: flex; align-items: center; gap: 8px; padding: 7px 9px; border-radius: 6px; border: 1px solid transparent; font-size: 12px; color: var(--muted); }
.m-nav__item svg { width: 14px; height: 14px; flex: none; }
.m-nav__item.is-active { background: var(--card); border-color: rgba(15, 23, 42, 0.06); color: var(--fg); font-weight: 600; box-shadow: var(--shadow-sm); }
.m-badge { margin-left: auto; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 999px; background: var(--primary); color: #fff; font-size: 9.5px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.m-side__foot { margin-top: auto; padding: 8px; display: flex; justify-content: space-between; font-size: 10px; color: var(--faint); }

.m-main { flex: 1; min-width: 0; margin: 7px; background: var(--card); border: 1px solid rgba(15, 23, 42, 0.06); border-radius: 13px; display: flex; overflow: hidden; }
.m-list { width: 246px; flex: none; border-right: 1px solid var(--border); padding: 12px 10px; overflow: hidden; }
.m-search { display: flex; gap: 6px; margin-bottom: 10px; }
.m-input { flex: 1; min-width: 0; height: 28px; display: flex; align-items: center; gap: 6px; padding: 0 8px; border-radius: 6px; background: var(--inset); font-size: 11.5px; color: var(--fg); }
.m-input svg { width: 12px; height: 12px; margin-left: auto; color: var(--faint); }
.m-btn { height: 28px; padding: 0 11px; display: flex; align-items: center; border-radius: 6px; background: var(--primary); color: #fff; font-size: 11.5px; font-weight: 600; }
.m-row { display: flex; gap: 9px; padding: 8px; margin-bottom: 3px; border-radius: 8px; border-left: 3px solid transparent; }
.m-row.is-sel { background: var(--brand-weak); border-left-color: var(--primary); }
.m-logo { width: 28px; height: 28px; flex: none; border-radius: 7px; display: grid; place-items: center; background: linear-gradient(150deg, #3b82f6, #1e40af); color: #fff; font-size: 10px; font-weight: 700; }
.m-logo--alt { background: #e9edf2; color: #7b8794; }
.m-row__txt { min-width: 0; display: block; }
.m-row__t { display: flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m-row__d { display: block; margin: 2px 0 3px; font-size: 10.5px; line-height: 1.45; color: var(--muted); overflow: hidden; }
.m-row__m { font-size: 10px; color: var(--faint); font-variant-numeric: tabular-nums; }
.chip { font-style: normal; font-size: 9px; font-weight: 600; padding: 1px 5px; border-radius: 4px; }
.chip--blue { background: var(--brand-soft); color: var(--brand-strong); }

.m-detail { flex: 1; min-width: 0; padding: 14px; display: flex; flex-direction: column; gap: 9px; overflow: hidden; }
.m-card { border: 1px solid var(--border); border-radius: 10px; padding: 11px 12px; background: var(--card); }
.m-card--head { display: flex; align-items: center; gap: 11px; }
.m-card--head .chip { margin-left: auto; flex: none; white-space: nowrap; }
.m-card__ico { color: var(--primary); display: flex; }
.m-card__ico svg { width: 24px; height: 24px; }
.m-card__t { min-width: 0; display: block; }
.m-card__t { font-size: 15px; font-weight: 700; }
.m-card__t em { display: block; margin-top: 2px; font-family: var(--mono); font-size: 10.5px; font-weight: 400; color: var(--muted); font-style: normal; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.m-card__label { font-size: 11px; font-weight: 600; margin-bottom: 8px; }
.m-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.m-tag { font-family: var(--mono); font-size: 10.5px; padding: 3px 7px; border-radius: 5px; border: 1px solid var(--border); color: var(--muted); }
.m-tag.is-on { background: var(--brand-weak); border-color: transparent; color: var(--primary); font-weight: 600; }
.m-arch { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 6px; font-family: var(--mono); font-size: 11px; color: var(--fg); }
.m-arch > span:first-child { width: 12px; flex: none; color: var(--primary); font-size: 10px; }
.m-arch b { font-weight: 600; }
.m-arch i { margin-left: auto; font-style: normal; font-size: 10px; color: var(--faint); }
.m-arch.is-on { background: var(--brand-weak); color: var(--primary); }
.m-card--stats { display: flex; gap: 26px; }
.m-card--stats span { display: block; }
.m-card--stats i { display: block; font-style: normal; font-size: 10px; color: var(--faint); }
.m-card--stats b { display: block; margin-top: 2px; font-family: var(--mono); font-size: 12px; font-weight: 600; }
.m-cta { margin-top: auto; padding: 10px; border-radius: 8px; background: var(--primary); color: #fff; text-align: center; font-size: 12px; font-weight: 600; }

/* ---------------- facts ---------------- */
.facts { padding: 34px 0 8px; }
.facts__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.fact { padding: 20px 22px; border-radius: var(--radius); border: 1px solid var(--border); background: linear-gradient(180deg, #fff, #fbfcfe); }
.fact__k { font-size: 17px; font-weight: 700; letter-spacing: -0.01em; color: var(--brand-strong); }
.fact__v { margin-top: 6px; font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ---------------- sections ---------------- */
.section { padding: 96px 0; }
.section--tint { background: var(--bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__head { max-width: 720px; margin-bottom: 44px; }
.section__head h2 { font-size: clamp(27px, 3.6vw, 38px); font-weight: 800; letter-spacing: -0.03em; }
.section__sub { margin-top: 14px; font-size: 17px; color: var(--muted); }
.kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.06em; color: var(--primary); margin-bottom: 12px; }

.grid { display: grid; gap: 18px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card { position: relative; min-width: 0; padding: 26px 26px 28px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(37, 99, 235, 0.24); }
.card h3 { font-size: 18px; font-weight: 700; letter-spacing: -0.015em; }
.card p { margin-top: 10px; font-size: 15px; color: var(--muted); line-height: 1.72; }
.card__ico { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; margin-bottom: 16px; border-radius: 10px; background: var(--brand-weak); color: var(--primary); }
.card__ico svg { width: 21px; height: 21px; }
.card--wide .code { margin-top: 18px; }
.details-extra { margin-top: 18px; }

.code { font-family: var(--mono); font-size: 13px; line-height: 1.85; padding: 15px 17px; border-radius: 10px; background: #0f172a; color: #e2e8f0; overflow-x: auto; }
.code__l { display: block; white-space: nowrap; }
.code__cmt { color: #7d8ba1; }

/* ---------------- steps ---------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.steps::before { content: ""; position: absolute; top: 21px; left: 8%; right: 8%; height: 1px; background: repeating-linear-gradient(90deg, rgba(37, 99, 235, 0.3) 0 6px, transparent 6px 12px); }
.step { position: relative; padding: 0 4px; }
.step__n { position: relative; z-index: 1; display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; background: var(--card); border: 1px solid rgba(37, 99, 235, 0.25); color: var(--primary); font-weight: 700; font-size: 16px; box-shadow: var(--shadow-sm); }
.step h3 { margin-top: 18px; font-size: 18px; }
.step p { margin-top: 8px; font-size: 15px; color: var(--muted); line-height: 1.7; }

/* ---------------- split + task mock ---------------- */
.split { display: grid; grid-template-columns: 1fr 1.05fr; gap: 46px; align-items: center; margin-top: 74px; }
.split__title { font-size: clamp(23px, 2.8vw, 31px); letter-spacing: -0.025em; }
.split__txt > p { margin-top: 14px; font-size: 16.5px; color: var(--muted); }
.ticks { margin-top: 22px; display: flex; flex-direction: column; gap: 11px; }
.ticks li { position: relative; padding-left: 26px; font-size: 15.5px; color: var(--fg); }
.ticks li::before { content: ""; position: absolute; left: 0; top: 8px; width: 14px; height: 8px; border-left: 2px solid var(--primary); border-bottom: 2px solid var(--primary); transform: rotate(-45deg); }

.mockpanel { border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow-md); padding: 8px 14px 14px; }
.mockpanel__bar { font-size: 14px; font-weight: 700; padding: 10px 4px 12px; border-bottom: 1px solid var(--border); }
.mockpanel__group { margin: 14px 4px 6px; font-size: 11px; font-weight: 700; letter-spacing: 0.06em; color: var(--faint); text-transform: uppercase; }
.trow { display: flex; align-items: center; gap: 11px; padding: 9px 4px; border-radius: 8px; }
.trow:hover { background: var(--inset); }
.trow__ring { position: relative; flex: none; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-size: 11px; font-weight: 700; }
.trow__ring.is-run::after, .trow__ring.is-pack::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: var(--card); }
.trow__ring.is-run { background: conic-gradient(var(--primary) 62%, #e6e9ee 0); }
.trow__ring.is-pack { background: conic-gradient(var(--warning) 96%, #e6e9ee 0); }
.trow__ring.is-done { background: var(--success); }
.trow__ring.is-queue { background: #e6e9ee; color: var(--faint); }
.trow__ring.is-fail { background: var(--destructive); }
.trow__txt { min-width: 0; flex: 1; display: block; }
.trow__txt b { display: block; font-size: 13.5px; font-weight: 600; }
.trow__txt em { display: block; margin-top: 1px; font-style: normal; font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tbar { display: block; height: 3px; margin-top: 6px; border-radius: 2px; background: #e9ecf1; overflow: hidden; }
.tbar i { display: block; height: 100%; border-radius: 2px; background: var(--primary); }
.trow__act { flex: none; font-size: 11.5px; font-weight: 600; color: var(--primary); padding: 4px 9px; border-radius: 6px; background: var(--brand-weak); }

/* ---------------- download ---------------- */
.pkg { align-items: start; }
.pkg__card { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 24px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
.pkg__card img { border-radius: 16px; }
.pkg__name { font-size: 19px; font-weight: 700; }
.pkg__name em { font-style: normal; font-size: 13px; font-weight: 600; color: var(--primary); background: var(--brand-weak); padding: 2px 8px; border-radius: 999px; margin-left: 4px; }
.pkg__file { margin-top: 3px; font-family: var(--mono); font-size: 12.5px; color: var(--muted); }
.pkg__card .btn { margin-left: auto; }
.spec { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.spec > div { background: var(--card); padding: 15px 18px; }
.spec dt { font-size: 12px; font-weight: 600; letter-spacing: 0.04em; color: var(--faint); text-transform: uppercase; }
.spec dd { margin: 4px 0 0; font-size: 14.5px; }
.note { margin-top: 22px; font-size: 13.5px; color: var(--faint); }

/* ---------------- faq ---------------- */
.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { position: relative; padding: 20px 44px 20px 0; font-size: 17px; font-weight: 600; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 12px; top: 27px; width: 9px; height: 9px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg); transition: transform 0.22s; }
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq details[open] summary { color: var(--primary); }
.faq p { padding: 0 0 22px; max-width: 680px; font-size: 15.5px; color: var(--muted); }
.faq p code { white-space: nowrap; }

/* ---------------- cta ---------------- */
.cta { padding: 0 0 96px; }
.cta__inner { position: relative; overflow: hidden; text-align: center; padding: 66px 34px; border-radius: 22px; background: linear-gradient(135deg, var(--brand-deep), var(--primary) 58%, #3b82f6); color: #fff; box-shadow: 0 40px 70px -34px rgba(30, 64, 175, 0.6); }
.cta__inner::before { content: ""; position: absolute; width: 420px; height: 420px; right: -120px; top: -180px; border-radius: 50%; background: rgba(255, 255, 255, 0.09); }
.cta__inner h2 { position: relative; font-size: clamp(24px, 3.4vw, 34px); letter-spacing: -0.025em; }
.cta__inner p { position: relative; margin: 14px auto 30px; max-width: 520px; color: rgba(255, 255, 255, 0.86); font-size: 16.5px; }

/* ---------------- footer ---------------- */
.footer { border-top: 1px solid var(--border); background: var(--bg); padding: 54px 0 26px; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 34px; }
.footer__brand p { margin-top: 14px; max-width: 320px; font-size: 14.5px; color: var(--muted); }
.footer__col h4 { font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); margin-bottom: 12px; }
.footer__col a { display: block; padding: 5px 0; font-size: 14.5px; color: var(--muted); }
.footer__col a:hover { color: var(--primary); }
.footer__base { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); font-size: 12.5px; color: var(--faint); }

/* ---------------- reveal ---------------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------------- responsive ---------------- */
@media (max-width: 1080px) {
  .facts__grid { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
  .steps::before { display: none; }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .m-list { width: 210px; }
  .window__body { height: 500px; }
}
@media (max-width: 820px) {
  .nav__links { display: none; }
  .section { padding: 68px 0; }
  .hero { padding-top: 48px; }
  .grid--3, .grid--2, .facts__grid, .steps { grid-template-columns: 1fr; }
  .steps { gap: 26px; }
  .spec { grid-template-columns: 1fr; }
  .pkg__card .btn { margin-left: 0; width: 100%; }
  .m-list { display: none; }
  .m-side { width: 62px; padding: 12px 6px; }
  .m-brand { font-size: 0; } .m-brand span { display: none; }
  .m-nav__item { justify-content: center; font-size: 0; padding: 8px 0; }
  .m-nav__item svg { width: 16px; height: 16px; }
  .m-badge { display: none; }
  .m-side__foot { display: none; }
  .window__body { height: auto; }
  .m-main { min-height: 460px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}