/* ── Apple-inspired design system ── */
:root {
  color-scheme: dark;
  --bg: #000000;
  --bg-elevated: #161617;
  --bg-card: #1d1d1f;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --link: #2997ff;
  --link-hover: #5eb0ff;
  --accent: #2997ff;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 36px;
  --header-h: 48px;
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max: 980px;
  --max-wide: 1200px;
  --section-pad: clamp(80px, 12vw, 140px);
}

*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.47059;
  letter-spacing: -0.022em;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
p { color: var(--text-secondary); margin: 0; }
img { max-width: 100%; display: block; }

/* Ambient background */
.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  animation: ambient-drift 28s ease-in-out infinite alternate;
}
.ambient-orb--a {
  width: 55vw;
  height: 55vw;
  top: -20%;
  left: -15%;
  background: radial-gradient(circle, rgba(41, 151, 255, 0.45), transparent 70%);
}
.ambient-orb--b {
  width: 45vw;
  height: 45vw;
  bottom: -25%;
  right: -10%;
  background: radial-gradient(circle, rgba(120, 80, 255, 0.28), transparent 70%);
  animation-delay: -12s;
}
@keyframes ambient-drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(4%, 6%) scale(1.08); }
}

/* ── Header (apple.com nav) ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(22, 22, 23, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}
.site-header.is-scrolled {
  background: rgba(22, 22, 23, 0.92);
  border-bottom-color: var(--line);
}
.header-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  height: 100%;
  padding: 0 clamp(20px, 4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: cover;
}
.brand-copy {
  display: flex;
  align-items: baseline;
  gap: 4px;
  line-height: 1;
}
.brand-copy strong {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand-copy small {
  font-size: 17px;
  font-weight: 400;
  color: var(--text-secondary);
}
.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
  justify-content: center;
}
.nav a {
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 400;
  color: var(--text);
  opacity: 0.88;
  border-radius: 980px;
  transition: opacity 0.2s, background 0.2s;
}
.nav a:hover { opacity: 1; background: rgba(255, 255, 255, 0.06); }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta {
  font-size: 12px;
  font-weight: 400;
  padding: 6px 14px;
  border-radius: 980px;
  background: var(--link);
  color: #fff !important;
  opacity: 1 !important;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: var(--link-hover); }
.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.menu-btn span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}
.menu-btn.is-open span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-btn.is-open span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.mobile-menu {
  display: none;
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  background: rgba(0, 0, 0, 0.96);
  backdrop-filter: blur(40px);
  padding: 24px clamp(20px, 4vw, 40px) 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-out), visibility 0.35s;
}
.mobile-menu.open {
  display: block;
  opacity: 1;
  visibility: visible;
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu a {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.03em;
  padding: 14px 0;
  color: var(--text);
  border-bottom: 1px solid var(--line);
}
.mobile-menu .mobile-cta {
  margin-top: 24px;
  text-align: center;
  font-size: 17px;
  font-weight: 500;
  padding: 14px 24px;
  border-radius: 980px;
  background: var(--link);
  border: 0;
}

/* ── Typography ── */
.eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--link);
}
h1 {
  margin: 0;
  font-size: clamp(40px, 6.5vw, 80px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.04em;
}
h2 {
  margin: 0;
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 600;
  line-height: 1.07143;
  letter-spacing: -0.035em;
}
h3 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.16667;
}
h4 {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 17px;
  font-weight: 400;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  transition: background 0.25s var(--ease-out), color 0.25s, transform 0.25s var(--ease-spring);
}
.btn:hover { transform: scale(1.02); }
.btn:active { transform: scale(0.98); }
.btn.primary {
  background: var(--link);
  color: #fff;
}
.btn.primary:hover { background: var(--link-hover); }
.btn.ghost {
  background: transparent;
  color: var(--link);
  box-shadow: inset 0 0 0 1px var(--line-strong);
}
.btn.ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}
.btn.small {
  min-height: 36px;
  padding: 0 16px;
  font-size: 14px;
}
.link-more {
  color: var(--link);
  font-size: 17px;
  font-weight: 400;
  transition: color 0.2s;
}
.link-more:hover { color: var(--link-hover); }
.link-more::after {
  content: " ›";
  font-size: 1.1em;
}

/* ── Sections ── */
main { position: relative; z-index: 1; }
.section {
  width: min(var(--max-wide), calc(100% - 48px));
  margin: 0 auto;
  padding: var(--section-pad) 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}
.intro {
  text-align: center;
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
}
.intro p:not(.eyebrow) {
  margin-top: 20px;
  font-size: 21px;
  line-height: 1.381;
  letter-spacing: 0.011em;
  color: var(--text-secondary);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Hero carousel ── */
.home-carousel {
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}
.carousel-track {
  position: relative;
  width: 100%;
  min-height: calc(100vh - var(--header-h));
  min-height: calc(100dvh - var(--header-h));
}
.carousel-slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 60px clamp(24px, 4vw, 40px) 100px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.carousel-slide.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  z-index: 2;
}
.slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 100%, color-mix(in srgb, var(--accent, #2997ff) 18%, transparent), transparent),
    var(--bg);
}
.slide-copy, .slide-media { position: relative; z-index: 1; }
.slide-copy h1 { font-size: clamp(44px, 5.5vw, 72px); }
.hero-subtitle {
  margin-top: 16px;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.33337;
  font-weight: 400;
  letter-spacing: 0.009em;
  color: var(--text-secondary);
  max-width: 520px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}
.hero-actions.center { justify-content: center; }
.brand-frame {
  position: relative;
  width: min(440px, 100%);
  margin-left: auto;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow:
    0 0 0 1px var(--line-strong),
    0 24px 80px rgba(0, 0, 0, 0.55);
}
.brand-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.carousel-controls {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 980px;
  background: rgba(29, 29, 31, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid var(--line);
}
.carousel-controls > button {
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
}
.carousel-controls > button:hover { background: rgba(255, 255, 255, 0.14); }
.carousel-dots { display: flex; gap: 8px; align-items: center; }
.carousel-dots button {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--text-tertiary);
  cursor: pointer;
  transition: width 0.3s var(--ease-out), background 0.3s;
}
.carousel-dots button.active {
  width: 24px;
  border-radius: 4px;
  background: var(--text);
}

/* ── Product cards ── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 32px 28px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  overflow: hidden;
  transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
}
.product-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent, #2997ff) 12%, transparent) 0%, transparent 45%);
  pointer-events: none;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.card-glow { display: none; }
.card-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 40px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  position: relative;
}
.product-card h3 {
  font-size: 28px;
  position: relative;
  margin-bottom: 12px;
}
.product-card p {
  position: relative;
  font-size: 15px;
  line-height: 1.5;
  flex: 1;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  position: relative;
}
.tag-row span {
  padding: 5px 12px;
  font-size: 12px;
  border-radius: 980px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}
.tag-row.large { margin-top: 24px; }
.card-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  position: relative;
}
.card-actions a:first-child {
  color: var(--link);
  font-size: 17px;
}
.card-actions a:first-child::after { content: " ›"; }
.card-actions a:last-child {
  font-size: 14px;
  color: var(--text-secondary);
}
.card-actions a:last-child:hover { color: var(--text); }

/* ── Media strip ── */
.media-mini-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  transition: background 0.3s;
}
.media-mini-card:hover { background: #2d2d2f; }
.media-mini-card img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  object-fit: cover;
  flex-shrink: 0;
}
.media-mini-card strong {
  display: block;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
}
.media-mini-card span {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--text-secondary);
}
.media-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

/* 首页 / 媒体页：三阵地卡片 */
.media-channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.media-channel-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: transform 0.35s var(--ease-out), border-color 0.35s, box-shadow 0.35s;
}
.media-channel-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent, #2997ff) 40%, var(--line));
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
}
.media-channel-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--bg-elevated);
}
.media-channel-card > div {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.media-channel-card .eyebrow {
  margin: 0;
  font-size: 11px;
  color: var(--accent, var(--link));
}
.media-channel-card strong {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}
.media-channel-card > div > span:not(.eyebrow) {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  flex: 1;
}
.media-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.media-tag-row.compact { margin-top: 12px; }
.media-tag-row span {
  padding: 4px 10px;
  font-size: 11px;
  border-radius: 980px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--line);
}
.media-card .media-tag-row { margin-top: 16px; margin-bottom: 8px; }

/* ── Split / feature blocks ── */
.split {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.split-list { display: grid; gap: 12px; }
.split-list div {
  padding: 24px 28px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  transition: background 0.3s;
}
.split-list div:hover { background: #2d2d2f; }
.split-list strong {
  display: block;
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.split-list p { font-size: 15px; line-height: 1.5; }

/* ── CTA band ── */
.cta {
  text-align: center;
  padding: clamp(64px, 10vw, 96px) 32px;
  border-radius: var(--radius-xl);
  background: var(--bg-elevated);
  margin-bottom: var(--section-pad);
}
.cta h2 { max-width: 720px; margin: 0 auto; }
.cta p:not(.eyebrow) {
  max-width: 600px;
  margin: 16px auto 0;
  font-size: 19px;
  line-height: 1.4211;
}

/* ── Page head ── */
.page-head {
  padding: calc(var(--header-h) + 80px) 24px 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg) 100%);
}
.page-head h1 { max-width: 800px; margin: 0 auto; }
.page-head p:not(.eyebrow) {
  max-width: 640px;
  margin: 20px auto 0;
  font-size: 21px;
  line-height: 1.381;
}
.media-head {
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(41, 151, 255, 0.15), transparent),
    linear-gradient(180deg, var(--bg-elevated) 0%, var(--bg) 100%);
}

/* ── Product detail page ── */
.hero, .product-hero {
  min-height: 90vh;
  min-height: 90dvh;
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: calc(var(--header-h) + 60px) clamp(24px, 4vw, 40px) 80px;
  max-width: var(--max-wide);
  margin: 0 auto;
  overflow: hidden;
}
.hero-bg, .product-hero-bg {
  position: absolute;
  inset: 0;
  background: var(--hero-bg, var(--bg));
  z-index: 0;
}
.hero::after, .product-hero::after { display: none; }
.hero-content, .product-hero-copy, .hero-device, .product-visual {
  position: relative;
  z-index: 1;
}
.product-hero h1 { font-size: clamp(48px, 7vw, 96px); }
.hero-desc {
  margin-top: 16px;
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
}
.product-visual { perspective: 1400px; }
.mock-window, .device-screen {
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transform: rotateX(4deg) rotateY(-6deg);
  transition: transform 0.6s var(--ease-out);
}
.product-visual:hover .mock-window {
  transform: rotateX(2deg) rotateY(-3deg);
}
.device-topbar {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}
.device-topbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}
.mock-window { padding: 0 28px 32px; min-height: 380px; }
.mock-window h3 { margin-top: 24px; font-size: 28px; }
.window-logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  margin-top: 20px;
  object-fit: cover;
}
.mock-lines { display: grid; gap: 10px; margin-top: 28px; }
.mock-lines span {
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent, var(--link)), rgba(255, 255, 255, 0.1));
}
.orb {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: var(--accent, var(--link));
  filter: blur(100px);
  opacity: 0.2;
  right: 10%;
  top: 10%;
  pointer-events: none;
}

/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.metrics div {
  padding: 36px 24px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}
.metrics strong {
  display: block;
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 8px;
}
.metrics span { font-size: 15px; color: var(--text-secondary); }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature-card {
  padding: 28px 24px;
  min-height: 220px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  transition: background 0.3s;
}
.feature-card:hover { background: #2d2d2f; }
.feature-card .feat-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 24px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent, var(--link)) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent, var(--link)) 28%, transparent);
}
.feature-card .feat-icon i {
  font-size: 18px;
  color: var(--accent, var(--link));
}
.feat-icon--sm {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}
.feat-icon--sm i { font-size: 15px; }

.split-list > div {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.split-list .feat-icon { flex-shrink: 0; margin-bottom: 0; }

.metrics > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.metric-icon {
  font-size: 20px;
  color: var(--accent, var(--link));
  opacity: 0.85;
}

.clean-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.list-icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--accent, var(--link));
  opacity: 0.9;
}

.workflow-step-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent, var(--link)) 18%, transparent);
  color: var(--accent, var(--link));
  font-size: 14px;
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 14px; line-height: 1.5; }

/* Panels & lists */
.dual-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.panel-card {
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
}
.panel-card h2 { font-size: clamp(24px, 3vw, 40px); margin-top: 8px; }
.clean-list, .ordered-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.clean-list li {
  padding-left: 20px;
  position: relative;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-secondary);
}
.clean-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--link);
}
.clean-list li:has(.list-icon) {
  padding-left: 0;
}
.clean-list li:has(.list-icon)::before {
  display: none;
}
.ordered-list { counter-reset: step; }
.ordered-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: start;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-secondary);
  counter-increment: step;
}
.ordered-list li::before {
  content: counter(step);
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--link);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

/* Workflow */
.workflow { text-align: center; }
.workflow-line {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-top: 40px;
}
.workflow-line div {
  padding: 20px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
}
.workflow-line span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent, var(--link));
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.workflow-line p {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.4;
}

/* Code & specs */
.code-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 40px;
  align-items: start;
}
.code-section pre {
  margin: 0;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--line);
  overflow: auto;
}
.code-section code {
  font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}
.specs {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 48px;
}
.spec-table {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
}
.spec-table div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
}
.spec-table div:last-child { border-bottom: 0; }
.spec-table span { color: var(--text-tertiary); font-size: 14px; }
.spec-table strong { font-weight: 400; font-size: 15px; }
.spec-table a { color: var(--link); word-break: break-all; }

/* Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.screenshot-card, .image-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  min-height: 180px;
}
.image-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}
.image-card strong {
  display: block;
  padding: 14px 16px;
  font-size: 14px;
  font-weight: 600;
}
.placeholder-shot {
  height: 180px;
  display: grid;
  place-items: center;
  background: var(--bg-elevated);
}
.placeholder-shot span {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Downloads */
.download-list { display: grid; gap: 12px; padding-top: 8px; }
.download-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  transition: background 0.3s;
}
.download-row:hover { background: #2d2d2f; }
.download-row h2 { font-size: clamp(24px, 3vw, 40px); margin-bottom: 8px; }
.download-status {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--link);
}
.download-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Media page */
.media-grid { display: grid; gap: 24px; }
.media-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  transition: transform 0.45s var(--ease-out);
}
.media-card:hover { transform: scale(1.005); }
.media-image-wrap {
  min-height: 380px;
  background: var(--bg-elevated);
}
.media-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-card-body {
  padding: clamp(36px, 5vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.media-card-body h2 { font-size: clamp(32px, 4vw, 48px); }
.media-card-body p:not(.eyebrow) {
  margin-top: 12px;
  font-size: 17px;
  line-height: 1.47;
}
.media-cta {
  display: inline-flex;
  margin-top: 24px;
  padding: 10px 18px;
  font-size: 17px;
  font-weight: 400;
  color: var(--link);
  width: fit-content;
  transition: color 0.2s;
}
.media-cta::after { content: " ›"; }
.media-cta:hover { color: var(--link-hover); }

/* ── Footer ── */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 48px clamp(24px, 4vw, 40px) 32px;
}
.footer-grid {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr repeat(2, 1fr);
  gap: 48px 32px;
}
.footer-col--brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  margin-bottom: 16px;
}
.footer-tagline {
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.footer-desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-tertiary);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 12px;
  line-height: 2;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--link); text-decoration: underline; }
.footer-bottom {
  max-width: var(--max-wide);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.footer-bottom > p {
  font-size: 12px;
  color: var(--text-tertiary);
  margin: 0;
}
.beian-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}
.beian-row a {
  font-size: 11px;
  color: var(--text-tertiary);
  transition: color 0.2s;
}
.beian-row a:hover { color: var(--text-secondary); }

/* GitHub 来源提示条 */
.github-source-bar {
  margin: 0;
  padding: 10px clamp(20px, 4vw, 40px);
  text-align: center;
  font-size: 13px;
  color: var(--text-tertiary);
  background: rgba(41, 151, 255, 0.08);
  border-bottom: 1px solid var(--line);
}
.github-source-bar a {
  color: var(--link);
  margin: 0 4px;
}
.github-source-bar a:hover { text-decoration: underline; }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }

/* Legacy aliases */
.product-card, .feature-card, .download-row, .screenshot-card {
  border: none;
  backdrop-filter: none;
}
.grain { display: none; }
.nav-pill { display: none; }
.footer-brand, .footer-links, .footer-logo { display: none; }

/* ── Responsive ── */
@media (max-width: 1068px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .workflow-line { grid-template-columns: repeat(3, 1fr); }
  .screenshot-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 834px) {
  .nav, .nav-cta { display: none; }
  .menu-btn { display: flex; }
  .carousel-slide {
    grid-template-columns: 1fr;
    text-align: center;
    padding-bottom: 120px;
  }
  .slide-copy h1 { margin: 0 auto; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .brand-frame { margin: 0 auto; }
  .hero, .product-hero { grid-template-columns: 1fr; padding-top: calc(var(--header-h) + 40px); }
  .split, .specs, .code-section, .dual-panel { grid-template-columns: 1fr; }
  .media-strip,
  .media-channel-grid { grid-template-columns: 1fr; }
  .media-card { grid-template-columns: 1fr; }
  .media-image-wrap { min-height: 280px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; }
  .metrics { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .section { width: calc(100% - 32px); }
  .product-grid, .feature-grid, .workflow-line, .screenshot-grid {
    grid-template-columns: 1fr;
  }
  .download-row { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .spec-table div { grid-template-columns: 1fr; gap: 4px; }
  .brand-copy small { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}