:root {
  color-scheme: light;
  --bg: #fff5f7;
  --bg-soft: #fff9f3;
  --panel: rgba(255, 255, 255, 0.88);
  --panel-solid: #ffffff;
  --text: #4a3740;
  --muted: #735d67;
  --line: rgba(156, 39, 176, 0.16);
  --pink: #ff4081;
  --pink-dark: #d92f6b;
  --purple: #9c27b0;
  --purple-dark: #6d2479;
  --gold: #b98640;
  --wood: #6e4531;
  --shadow: 0 18px 50px rgba(74, 55, 64, 0.13);
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  background:
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 48%, #fff 100%);
  color: var(--text);
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

svg {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--purple);
  color: #fff;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 249, 251, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 800;
  color: var(--purple-dark);
  white-space: nowrap;
}

.brand img {
  width: 48px;
  height: 46px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(156, 39, 176, 0.14);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--muted);
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 11px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.site-nav a svg {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  padding: 4px;
  border-radius: 50%;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(255, 64, 129, 0.55);
  box-shadow: 0 0 0 3px rgba(255, 64, 129, 0.1), 0 8px 20px rgba(156, 39, 176, 0.1);
  color: var(--pink-dark);
  outline: none;
}

.site-nav a:hover svg,
.site-nav a:focus-visible svg {
  color: var(--pink-dark);
  transform: translateY(-1px);
}

.site-nav a:hover span,
.site-nav a:focus-visible span {
  color: var(--pink-dark);
  text-shadow: 0 0 12px rgba(255, 64, 129, 0.28);
}

.site-nav .nav-cta {
  margin-left: 8px;
  background: var(--pink);
  color: #fff;
  font-weight: 700;
  border-radius: 999px;
  border-color: rgba(255, 64, 129, 0.72);
  box-shadow: 0 10px 24px rgba(255, 64, 129, 0.22);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  background: var(--pink-dark);
  border-color: rgba(255, 255, 255, 0.78);
  box-shadow: 0 0 0 3px rgba(255, 64, 129, 0.16), 0 12px 26px rgba(255, 64, 129, 0.28);
  color: #fff;
}

.site-nav .nav-cta:hover svg,
.site-nav .nav-cta:focus-visible svg {
  color: #fff;
}

.site-nav .nav-cta:hover span,
.site-nav .nav-cta:focus-visible span {
  color: #fff;
  text-shadow: 0 0 14px rgba(255, 255, 255, 0.36);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 9px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transform-origin: center;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.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 {
  position: relative;
  min-height: calc(100vh - 74px);
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(74, 55, 64, 0.84) 0%, rgba(74, 55, 64, 0.52) 42%, rgba(74, 55, 64, 0.18) 100%),
    linear-gradient(0deg, rgba(255, 245, 247, 0.96) 0%, rgba(255, 245, 247, 0.12) 30%);
}

.hero-content {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0 46px;
  color: #fff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: #ffe3ec;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 700px;
  font-size: clamp(32px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
  color: #fff;
  text-shadow: 0 8px 28px rgba(109, 36, 121, 0.34);
}

@supports (background-clip: text) or (-webkit-background-clip: text) {
  .hero h1 {
    background: linear-gradient(90deg, #ffffff 0%, #ffe3ec 46%, #ff8fbd 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.hero-lead {
  max-width: 720px;
  margin: 22px 0 0;
  font-size: clamp(16px, 2.2vw, 21px);
  color: rgba(255, 255, 255, 0.92);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn::before {
  content: "";
  position: absolute;
  inset: -2px;
  z-index: -1;
  background: linear-gradient(115deg, transparent 0%, rgba(255, 255, 255, 0.36) 38%, transparent 68%);
  transform: translateX(-120%);
  transition: transform 0.55s ease;
}

.btn svg {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  padding: 4px;
  border-radius: 50%;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.btn:hover::before,
.btn:focus-visible::before {
  transform: translateX(120%);
}

.btn:hover svg,
.btn:focus-visible svg {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--pink);
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 16px 34px rgba(255, 64, 129, 0.28);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--pink-dark);
  box-shadow: 0 18px 38px rgba(255, 64, 129, 0.34);
}

.btn-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.46);
  border-radius: 999px;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.78);
  box-shadow: 0 14px 30px rgba(255, 255, 255, 0.14);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 150px));
  gap: 10px;
  margin: 34px 0 0;
}

.hero-stats div {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
}

.hero-stats dt {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.74);
}

.hero-stats dd {
  margin: 2px 0 0;
  font-weight: 800;
}

.quick-panel {
  width: min(var(--max), calc(100% - 32px));
  margin: -28px auto 0;
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.quick-panel a {
  position: relative;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 4px 12px;
  align-items: center;
  min-height: 96px;
  padding: 18px;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.quick-panel a::after {
  content: "";
  position: absolute;
  inset: auto 18px 0 72px;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(90deg, var(--pink), var(--purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s ease;
}

.quick-panel a:hover,
.quick-panel a:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(255, 64, 129, 0.34);
  box-shadow: 0 22px 56px rgba(74, 55, 64, 0.16);
  outline: none;
}

.quick-panel a:hover::after,
.quick-panel a:focus-visible::after {
  transform: scaleX(1);
}

.quick-panel a:hover .icon,
.quick-panel a:focus-visible .icon {
  color: #fff;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  box-shadow: 0 12px 26px rgba(255, 64, 129, 0.22);
}

.quick-panel .icon {
  grid-row: span 2;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--purple);
  background: rgba(156, 39, 176, 0.09);
}

.quick-panel strong {
  color: var(--purple-dark);
  line-height: 1.25;
}

.quick-panel span:last-child {
  color: var(--muted);
  font-size: 14px;
}

.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 82px 0 0;
}

.section-head {
  max-width: 800px;
  margin-bottom: 28px;
}

.section-kicker {
  color: var(--pink-dark);
}

h2,
h3,
p {
  overflow-wrap: anywhere;
}

h2 {
  position: relative;
  margin: 0 0 14px;
  color: var(--purple-dark);
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.2;
  letter-spacing: 0;
}

h2::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 0.95em;
  margin-right: 10px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--pink), var(--purple));
  vertical-align: -0.12em;
  box-shadow: 0 6px 16px rgba(255, 64, 129, 0.2);
}

h3 {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: 0;
}

p {
  margin: 0 0 14px;
}

.section-head p,
.section-copy p,
.feature-copy p {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
  gap: 44px;
  align-items: center;
}

.split.reverse {
  grid-template-columns: minmax(320px, 0.86fr) minmax(0, 1fr);
}

.media-card {
  margin: 0;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.media-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.3s ease;
}

.media-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 64, 129, 0.32);
  box-shadow: 0 24px 62px rgba(74, 55, 64, 0.18);
}

.media-card:hover img {
  transform: scale(1.035);
  filter: saturate(1.08);
}

.media-card figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 14px;
  background: #fff;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.system-card {
  position: relative;
  padding: 22px;
  background: var(--panel-solid);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(74, 55, 64, 0.07);
  overflow: hidden;
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.system-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--pink), var(--purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s ease;
}

.system-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 64, 129, 0.3);
  box-shadow: 0 20px 48px rgba(74, 55, 64, 0.13);
}

.system-card:hover::before {
  transform: scaleX(1);
}

.system-card:hover .card-icon {
  color: #fff;
  background: linear-gradient(135deg, var(--pink), var(--purple));
  box-shadow: 0 12px 24px rgba(156, 39, 176, 0.2);
}

.card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 8px;
  color: var(--pink-dark);
  background: rgba(255, 64, 129, 0.1);
  transition: background 0.24s ease, color 0.24s ease, box-shadow 0.24s ease;
}

.system-card p,
.feature-list p,
.update-list,
.faq-list p {
  color: var(--muted);
}

.gallery-section {
  overflow: hidden;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.gallery-item {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(74, 55, 64, 0.08);
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.42s ease, filter 0.24s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  border-color: rgba(156, 39, 176, 0.28);
  box-shadow: 0 20px 46px rgba(74, 55, 64, 0.14);
}

.gallery-item:hover img {
  transform: scale(1.04);
  filter: saturate(1.08) contrast(1.02);
}

.gallery-item figcaption {
  padding: 10px 12px;
  color: var(--muted);
  font-size: 13px;
}

.gallery-controls {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 16px;
}

.gallery-controls button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--purple-dark);
  border-radius: 999px;
  padding: 9px 14px;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.gallery-controls button svg {
  width: 25px;
  height: 25px;
  flex: 0 0 25px;
  padding: 4px;
  border-radius: 50%;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.gallery-controls button:hover,
.gallery-controls button:focus-visible {
  background: rgba(255, 64, 129, 0.1);
  color: var(--pink-dark);
  transform: translateY(-1px);
  outline: none;
}

.gallery-controls button:hover svg,
.gallery-controls button:focus-visible svg {
  background: rgba(255, 64, 129, 0.16);
  color: var(--pink-dark);
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline article {
  padding: 18px 20px;
  border-left: 4px solid var(--pink);
  background: rgba(255, 255, 255, 0.78);
  border-radius: 0 8px 8px 0;
}

.feature-band {
  display: grid;
  grid-template-columns: 0.7fr 1fr;
  gap: 32px;
  padding: 54px;
  margin-top: 82px;
  background:
    linear-gradient(135deg, rgba(156, 39, 176, 0.11), rgba(255, 64, 129, 0.09)),
    #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-list article {
  position: relative;
  padding: 18px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(156, 39, 176, 0.12);
  border-radius: 8px;
  transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease, background 0.24s ease;
}

.feature-list article:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 64, 129, 0.28);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 36px rgba(74, 55, 64, 0.1);
}

.updates {
  max-width: 1040px;
}

.update-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  counter-reset: updates;
}

.update-list li {
  counter-increment: updates;
  position: relative;
  padding: 16px 18px 16px 58px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.update-list li:hover {
  transform: translateX(4px);
  border-color: rgba(255, 64, 129, 0.3);
  box-shadow: 0 14px 32px rgba(74, 55, 64, 0.1);
}

.update-list li::before {
  content: counter(updates);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(156, 39, 176, 0.1);
  color: var(--purple-dark);
  font-weight: 800;
}

.faq-section {
  max-width: 980px;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(74, 55, 64, 0.06);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

details:hover,
details[open] {
  border-color: rgba(156, 39, 176, 0.28);
  box-shadow: 0 14px 34px rgba(74, 55, 64, 0.1);
}

details:hover {
  transform: translateY(-2px);
}

summary {
  cursor: pointer;
  padding: 17px 20px;
  color: var(--purple-dark);
  font-weight: 800;
  outline: none;
  transition: color 0.2s ease, background 0.2s ease;
}

summary:hover,
details[open] summary {
  color: var(--pink-dark);
  background: linear-gradient(90deg, rgba(255, 64, 129, 0.08), transparent);
}

summary::marker {
  color: var(--pink);
}

details p {
  padding: 0 20px 18px;
}

.final-cta {
  width: min(var(--max), calc(100% - 32px));
  margin: 82px auto 0;
  padding: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background:
    linear-gradient(135deg, rgba(74, 55, 64, 0.86), rgba(109, 36, 121, 0.88)),
    url("img/tu6.webp") center / cover;
  color: #fff;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.final-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(109, 36, 121, 0.24);
}

.friend-links {
  width: 100%;
  margin: 82px 0 0;
  padding: 56px 16px 58px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 40%, rgba(255, 64, 129, 0.16), rgba(255, 64, 129, 0) 34%),
    linear-gradient(90deg, rgba(255, 245, 247, 0.98), rgba(255, 233, 239, 0.92), rgba(255, 245, 247, 0.98));
  border-top: 1px solid rgba(255, 64, 129, 0.16);
  border-bottom: 1px solid rgba(255, 64, 129, 0.16);
}

.friend-links h2 {
  margin-bottom: 18px;
  color: var(--text);
  font-size: clamp(24px, 3vw, 38px);
}

.friend-links h2::before {
  display: none;
}

.friend-link-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.friend-link-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  border: 1px solid rgba(156, 39, 176, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  font-weight: 800;
  box-shadow: 0 10px 26px rgba(74, 55, 64, 0.08);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.friend-link-list a:hover,
.friend-link-list a:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 64, 129, 0.48);
  background: #fff;
  color: var(--pink-dark);
  box-shadow: 0 14px 34px rgba(255, 64, 129, 0.16);
  outline: none;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.final-cta h2 {
  color: #fff;
}

.final-cta h2::before {
  background: linear-gradient(180deg, #ff8fbd, #ffffff);
}

.final-cta p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.86);
}

.site-footer {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 42px 0 32px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--purple-dark);
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    justify-content: flex-start;
    min-height: 44px;
  }

  .site-nav .nav-cta {
    margin-left: 0;
    justify-content: center;
    text-align: center;
  }

  .quick-panel,
  .system-grid,
  .gallery,
  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split,
  .split.reverse,
  .feature-band {
    grid-template-columns: 1fr;
  }

  .feature-band {
    padding: 30px;
  }
}

@media (max-width: 680px) {
  .nav-wrap,
  .section,
  .quick-panel,
  .final-cta,
  .site-footer {
    width: min(100% - 24px, var(--max));
  }

  .brand span {
    max-width: 190px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .hero {
    min-height: 720px;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(74, 55, 64, 0.34) 0%, rgba(74, 55, 64, 0.88) 56%, rgba(255, 245, 247, 0.97) 100%);
  }

  .hero-content {
    padding-bottom: 38px;
  }

  .hero-stats,
  .quick-panel,
  .system-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .hero-actions,
  .final-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section {
    padding-top: 62px;
  }

  .gallery {
    display: block;
  }

  .gallery-item {
    display: none;
  }

  .gallery-item.is-active {
    display: block;
  }

  .gallery-controls {
    display: flex;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}