:root {
  color-scheme: dark;

  /* 墨黑底色梯度 */
  --ink-900: #0a0907;
  --ink-800: #110f0c;
  --ink-700: #181511;
  --ink-600: #1f1b16;
  --ink-500: #2a241d;

  /* 香槟金梯度 */
  --gold-400: #f5e6c0;
  --gold-500: #e6c879;
  --gold-600: #c9a14a;
  --gold-700: #9a7a35;
  --gold-800: #5a4520;

  /* 文字 */
  --paper: #f3ead8;
  --paper-dim: #c8b994;
  --muted: #8a8174;
  --muted-2: #5a5347;

  /* 状态 */
  --secure: #b8d4a8;
  --fallback: #d9b870;

  /* 线条与阴影 */
  --line: rgba(201, 161, 74, 0.18);
  --line-strong: rgba(201, 161, 74, 0.42);
  --line-faint: rgba(243, 234, 216, 0.08);
  --shadow-deep: 0 30px 80px -20px rgba(0, 0, 0, 0.7);
  --shadow-card: 0 20px 60px -25px rgba(0, 0, 0, 0.55);

  --serif-display: "Cormorant Garamond", "Noto Serif SC", "Times New Roman",
    serif;
  --serif-cn: "Noto Serif SC", "Songti SC", "STSong", serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-height: 100vh;
  margin: 0;
  color: var(--paper);
  font-family: var(--serif-cn);
  font-weight: 400;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  background:
    radial-gradient(
      ellipse at 50% -10%,
      rgba(201, 161, 74, 0.12),
      transparent 55%
    ),
    radial-gradient(
      ellipse at 90% 90%,
      rgba(154, 122, 53, 0.08),
      transparent 50%
    ),
    var(--ink-900);
  background-attachment: fixed;
}

/* 细密噪点纹理 */
body::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.95 0 0 0 0 0.85 0 0 0 0 0.6 0 0 0 0.06 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  content: "";
  mix-blend-mode: overlay;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

p {
  margin-top: 0;
  line-height: 1.75;
}

em {
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 400;
}

/* ================== HEADER ================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem clamp(1.2rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
  background: rgba(10, 9, 7, 0.78);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark__monogram {
  display: grid;
  width: 2.4rem;
  height: 2.4rem;
  place-items: center;
  border: 1px solid var(--gold-600);
  border-radius: 50%;
  background:
    radial-gradient(
      circle at 30% 25%,
      rgba(245, 230, 192, 0.5),
      transparent 60%
    ),
    linear-gradient(140deg, var(--gold-500), var(--gold-700) 70%);
  color: var(--ink-900);
  font-family: var(--serif-display);
  font-size: 1.4rem;
  font-weight: 600;
  font-style: italic;
  line-height: 1;
  letter-spacing: -0.02em;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    0 4px 14px rgba(201, 161, 74, 0.25);
}

.brand-mark__name {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1;
}

.brand-mark__title {
  font-family: var(--serif-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.32em;
  color: var(--paper);
}

.brand-mark__sub {
  font-size: 0.58rem;
  font-weight: 400;
  letter-spacing: 0.4em;
  color: var(--muted);
  text-transform: none;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3.5vw, 2.4rem);
}

.top-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  position: relative;
  padding: 0.4rem 0;
  color: var(--paper-dim);
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  transition: color 280ms ease;
}

.top-nav a em {
  font-size: 0.78rem;
  color: var(--gold-600);
  letter-spacing: 0.02em;
}

.top-nav a::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold-500);
  content: "";
  transition: width 320ms ease;
}

.top-nav a:hover {
  color: var(--paper);
}

.top-nav a:hover::after {
  width: 100%;
}

main {
  position: relative;
  z-index: 1;
}

/* ================== HERO ================== */
.hero {
  max-width: 64rem;
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) clamp(1.2rem, 5vw, 4rem)
    clamp(2rem, 5vw, 3.5rem);
  text-align: center;
}

.hero__rule {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  margin-bottom: 2rem;
  color: var(--gold-600);
}

.hero__rule span {
  flex: 1;
  max-width: 8rem;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold-700) 50%,
    transparent
  );
}

.hero__rule small {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.32em;
  color: var(--gold-600);
}

.eyebrow {
  margin: 0 0 1.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold-600);
}

.hero__title {
  margin: 0 0 1.4rem;
  font-family: var(--serif-display);
  font-size: clamp(2.8rem, 7vw, 5.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.hero__title-line {
  display: block;
  font-family: var(--serif-cn);
  font-weight: 500;
}

.hero__title-line--italic {
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 400;
  color: var(--gold-500);
  letter-spacing: -0.01em;
}

.hero__title-line--italic em {
  font-style: italic;
  color: var(--paper);
  font-weight: 500;
}

.hero__lede {
  max-width: 36rem;
  margin: 0 auto 2.4rem;
  font-size: 1.02rem;
  color: var(--paper-dim);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 42rem;
  margin: 0 auto 2.6rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero__meta > div {
  padding: 1rem 0.8rem;
  border-right: 1px solid var(--line);
  text-align: center;
}

.hero__meta > div:last-child {
  border-right: 0;
}

.hero__meta small {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
}

.hero__meta strong {
  display: block;
  font-family: var(--serif-display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold-500);
}

/* ================== PROMO CARDS ================== */
.promo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  max-width: 56rem;
  margin: 0 auto 2.6rem;
}

.promo-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.1rem 1rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(
      170deg,
      rgba(245, 230, 192, 0.04),
      rgba(0, 0, 0, 0) 60%
    ),
    var(--ink-800);
  text-align: left;
  transition:
    border-color 320ms ease,
    transform 320ms ease,
    background 320ms ease;
}

.promo-card::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold-600) 50%,
    transparent
  );
  opacity: 0.45;
  content: "";
}

.promo-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.promo-card--feature {
  background:
    linear-gradient(170deg, rgba(245, 230, 192, 0.07), rgba(0, 0, 0, 0) 65%),
    var(--ink-700);
  border-color: var(--line-strong);
}

.promo-card__no {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--gold-600);
}

.promo-card__title {
  margin: 0 0 0.5rem;
  font-family: var(--serif-cn);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
}

.promo-card__amount {
  margin: 0 0 0.55rem;
  font-family: var(--serif-display);
  font-size: clamp(1.4rem, 2.4vw, 1.85rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--gold-500);
}

.promo-card__amount em {
  font-size: 0.7em;
  font-style: italic;
  color: var(--gold-600);
  margin-right: 0.1em;
}

.promo-card__amount span {
  font-size: 0.55em;
  margin: 0 0.18em;
  color: var(--gold-700);
  vertical-align: 0.18em;
}

.promo-card__note {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ================== BUTTONS ================== */
.hero__actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 3.1rem;
  padding: 0 1.6rem;
  border: 0;
  border-radius: 0;
  font-family: var(--serif-cn);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition:
    transform 320ms ease,
    background 320ms ease,
    color 320ms ease,
    border-color 320ms ease;
  position: relative;
  overflow: hidden;
}

.btn i {
  font-style: normal;
  font-family: var(--serif-display);
  transition: transform 320ms ease;
}

.btn:hover i {
  transform: translateX(4px);
}

.btn--primary {
  color: var(--ink-900);
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600) 60%, var(--gold-700));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.35),
    0 14px 38px -12px rgba(201, 161, 74, 0.5);
}

.btn--primary::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  opacity: 0;
  content: "";
  transition: opacity 320ms ease;
}

.btn--primary > * {
  position: relative;
  z-index: 1;
}

.btn--primary:hover {
  transform: translateY(-2px);
}

.btn--primary:hover::before {
  opacity: 1;
}

.btn--ghost {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
}

.btn--ghost:hover {
  background: rgba(201, 161, 74, 0.08);
  border-color: var(--gold-600);
}

.btn--compact {
  min-height: 2.6rem;
  padding: 0 1.1rem;
  font-size: 0.85rem;
}

/* ================== SECTION ================== */
.section {
  position: relative;
  max-width: 84rem;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.2rem, 5vw, 4rem);
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 52rem;
  margin: 0 auto clamp(2rem, 4vw, 3.5rem);
  text-align: center;
}

.section-heading h2 {
  margin: 0 0 1rem;
  font-family: var(--serif-display);
  font-size: clamp(2.6rem, 5.5vw, 4.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.section-heading h2 em {
  font-style: italic;
  color: var(--gold-500);
}

.section-heading__lede {
  max-width: 36rem;
  margin: 0 auto;
  color: var(--paper-dim);
}

/* ================== BRAND CARDS ================== */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.brand-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.7rem 1.6rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(245, 230, 192, 0.025), transparent 40%),
    var(--ink-800);
  box-shadow: var(--shadow-card);
  transition:
    border-color 380ms ease,
    transform 380ms ease,
    background 380ms ease;
}

.brand-card::before {
  position: absolute;
  top: 0;
  left: 1.7rem;
  right: 1.7rem;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold-600) 30%,
    var(--gold-600) 70%,
    transparent
  );
  opacity: 0.55;
  content: "";
  transition: opacity 380ms ease;
}

.brand-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  background:
    linear-gradient(180deg, rgba(245, 230, 192, 0.05), transparent 50%),
    var(--ink-700);
}

.brand-card:hover::before {
  opacity: 1;
}

.brand-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.6rem;
}

.brand-card__index {
  font-family: var(--serif-display);
  font-size: 1.6rem;
  font-style: italic;
  font-weight: 400;
  color: var(--gold-600);
  letter-spacing: 0.02em;
  line-height: 1;
}

.brand-badge {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font-family: var(--serif-cn);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--paper-dim);
}

.brand-card__name {
  margin: 0 0 0.7rem;
  font-family: var(--serif-cn);
  font-size: clamp(1.85rem, 3vw, 2.3rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brand-card__name em {
  display: block;
  margin-top: 0.25rem;
  font-family: var(--serif-display);
  font-size: 0.95rem;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--gold-600);
}

.brand-card__desc {
  margin: 0 0 1.4rem;
  font-size: 0.92rem;
  color: var(--paper-dim);
}

.feature-list {
  display: grid;
  gap: 0.7rem;
  margin: 0 0 1.6rem;
  padding: 1.1rem 0 1.2rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--paper);
}

.feature-list li::before {
  position: absolute;
  top: 0.65rem;
  left: 0;
  width: 0.6rem;
  height: 1px;
  background: var(--gold-600);
  content: "";
}

.feature-list li em {
  display: inline-block;
  margin-right: 0.4rem;
  font-family: var(--serif-display);
  font-style: italic;
  font-weight: 500;
  color: var(--gold-500);
  letter-spacing: 0.02em;
}

.brand-cta {
  width: 100%;
  margin-bottom: 0.85rem;
}

/* ================== LINE PANEL ================== */
.line-panel {
  border-top: 1px solid var(--line-faint);
}

.line-panel summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 0.15rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
  cursor: pointer;
  list-style: none;
  transition: color 280ms ease;
}

.line-panel summary::-webkit-details-marker {
  display: none;
}

.line-panel summary:hover {
  color: var(--paper);
}

.line-panel summary i {
  position: relative;
  width: 0.85rem;
  height: 0.85rem;
  flex-shrink: 0;
}

.line-panel summary i::before,
.line-panel summary i::after {
  position: absolute;
  background: var(--gold-600);
  content: "";
  transition: transform 280ms ease;
}

.line-panel summary i::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  transform: translateY(-50%);
}

.line-panel summary i::after {
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  transform: translateX(-50%);
}

.line-panel[open] summary i::after {
  transform: translateX(-50%) scaleY(0);
}

.line-list {
  display: grid;
  gap: 0.45rem;
  padding: 0.4rem 0 0.4rem;
}

.line-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line-faint);
  background: rgba(10, 9, 7, 0.35);
  color: var(--paper-dim);
  font-family: var(--mono);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  transition:
    color 260ms ease,
    border-color 260ms ease,
    background 260ms ease,
    transform 260ms ease;
}

.line-link > span {
  font-family: var(--serif-cn);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

.line-link:hover {
  color: var(--paper);
  border-color: var(--line-strong);
  background: rgba(201, 161, 74, 0.05);
  transform: translateX(2px);
}

.line-link .line-tag {
  padding: 0.18rem 0.55rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.22em;
}

.line-link .line-tag--secure {
  color: var(--secure);
  border-color: rgba(184, 212, 168, 0.4);
}

.line-link .line-tag--fallback {
  color: var(--fallback);
  border-color: rgba(217, 184, 112, 0.4);
}

/* ================== SAFETY ================== */
.safety-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.safety-item {
  position: relative;
  padding: 1.6rem 1.3rem 1.4rem;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(245, 230, 192, 0.03), transparent 60%),
    var(--ink-800);
  transition:
    border-color 320ms ease,
    transform 320ms ease;
}

.safety-item:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.safety-item__no {
  display: block;
  margin-bottom: 1rem;
  font-family: var(--serif-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--gold-600);
}

.safety-item strong {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--serif-cn);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.safety-item__text {
  display: block;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ================== FLOATING BAR ================== */
.floating-bar {
  position: fixed;
  right: clamp(1rem, 4vw, 2rem);
  bottom: 1.2rem;
  left: clamp(1rem, 4vw, 2rem);
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 56rem;
  margin: 0 auto;
  padding: 0.55rem 0.55rem 0.55rem 1.4rem;
  border: 1px solid var(--line-strong);
  background: rgba(10, 9, 7, 0.88);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: var(--shadow-deep);
}

.floating-bar__label {
  font-family: var(--serif-cn);
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
}

.floating-bar__label em {
  margin-right: 0.5rem;
  color: var(--gold-500);
  font-style: normal;
}

/* ================== FOOTER ================== */
.site-footer {
  position: relative;
  z-index: 1;
  padding: 3rem clamp(1.2rem, 5vw, 4rem) 7rem;
  text-align: center;
  color: var(--muted);
}

.site-footer p {
  margin: 0 auto 0.6rem;
  max-width: 38rem;
  font-size: 0.85rem;
  line-height: 1.75;
}

.site-footer__rule {
  width: 4rem;
  height: 1px;
  margin: 0 auto 1.8rem;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold-600),
    transparent
  );
}

.site-footer__mark {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.4em;
  color: var(--gold-700);
  text-transform: uppercase;
}

/* ================== RESPONSIVE ================== */
@media (max-width: 980px) {
  .brand-grid,
  .safety-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .promo-grid {
    gap: 0.6rem;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0.85rem 1rem;
  }

  .brand-mark__monogram {
    width: 2rem;
    height: 2rem;
    font-size: 1.15rem;
  }

  .brand-mark__title {
    font-size: 0.95rem;
    letter-spacing: 0.28em;
  }

  .brand-mark__sub {
    font-size: 0.5rem;
    letter-spacing: 0.32em;
  }

  .top-nav {
    gap: 0.85rem;
  }

  .top-nav a {
    font-size: 0.82rem;
  }

  .top-nav a em {
    display: none;
  }

  .hero {
    padding: 1.5rem 1rem 1.2rem;
  }

  .hero__rule {
    margin-bottom: 1rem;
    gap: 0.6rem;
  }

  .hero__rule span {
    max-width: 3.5rem;
  }

  .hero__rule small {
    font-size: 0.55rem;
    letter-spacing: 0.22em;
  }

  .eyebrow {
    margin-bottom: 0.7rem;
    font-size: 0.55rem;
    letter-spacing: 0.22em;
  }

  .hero__title {
    font-size: 2rem;
    margin-bottom: 0.7rem;
    line-height: 1.1;
  }

  .hero__lede {
    font-size: 0.85rem;
    margin-bottom: 1.2rem;
    line-height: 1.6;
  }

  .hero__meta {
    margin-bottom: 1.2rem;
  }

  .hero__meta > div {
    padding: 0.55rem 0.3rem;
  }

  .hero__meta small {
    font-size: 0.5rem;
    letter-spacing: 0.16em;
    margin-bottom: 0.2rem;
  }

  .hero__meta strong {
    font-size: 0.85rem;
  }

  .promo-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.4rem;
    margin-bottom: 1.4rem;
  }

  .promo-card {
    padding: 0.7rem 0.55rem 0.7rem;
  }

  .promo-card__no {
    margin-bottom: 0.4rem;
    font-size: 0.5rem;
    letter-spacing: 0.16em;
  }

  .promo-card__title {
    font-size: 0.72rem;
    margin-bottom: 0.3rem;
    letter-spacing: 0.04em;
  }

  .promo-card__amount {
    font-size: 1.05rem;
    margin-bottom: 0;
    line-height: 1.1;
  }

  .promo-card__amount em {
    font-size: 0.55em;
    margin-right: 0.05em;
  }

  .promo-card__amount span {
    font-size: 0.45em;
    margin: 0 0.1em;
  }

  .promo-card__note {
    display: none;
  }

  .hero__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    width: 100%;
  }

  .btn {
    width: 100%;
    min-height: 2.6rem;
    padding: 0 0.9rem;
    font-size: 0.82rem;
    letter-spacing: 0.12em;
  }

  .section {
    padding: 2.4rem 1rem;
  }

  .section-heading {
    margin-bottom: 1.6rem;
  }

  .section-heading h2 {
    font-size: 2rem;
  }

  .section-heading__lede {
    font-size: 0.9rem;
  }

  .brand-grid,
  .safety-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .brand-card {
    padding: 1.5rem 1.2rem 1.3rem;
  }

  .brand-card::before {
    left: 1.2rem;
    right: 1.2rem;
  }

  .brand-card__top {
    margin-bottom: 1.2rem;
  }

  .brand-card__name {
    font-size: 1.7rem;
  }

  .brand-card__name em {
    font-size: 0.85rem;
  }

  .brand-card__desc {
    font-size: 0.82rem;
    line-height: 1.55;
    margin-bottom: 0.85rem;
  }

  .feature-list {
    gap: 0.55rem;
    padding: 0.75rem 0 0.85rem;
    margin-bottom: 1rem;
  }

  .feature-list li {
    padding-left: 1.1rem;
    font-size: 0.82rem;
    line-height: 1.45;
  }

  .feature-list li::before {
    top: 0.55rem;
    width: 0.45rem;
  }

  .feature-list li em {
    margin-right: 0.3rem;
  }

  .safety-item {
    padding: 1.2rem 1rem 1.1rem;
  }

  .safety-item strong {
    font-size: 0.98rem;
  }

  .safety-item__text {
    font-size: 0.8rem;
  }

  .floating-bar {
    right: 0.7rem;
    bottom: 0.7rem;
    left: 0.7rem;
    padding: 0.4rem 0.4rem 0.4rem 1rem;
  }

  .floating-bar__label {
    font-size: 0.76rem;
    letter-spacing: 0.05em;
  }

  .btn--compact {
    width: auto;
    flex-shrink: 0;
    min-height: 2.3rem;
    padding: 0 0.95rem;
    font-size: 0.78rem;
  }

  .site-footer {
    padding: 2rem 1rem 6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}