:root {
  color-scheme: light;
  --ink: #2e2a28;
  --body: #5b524d;
  --body-strong: #4d4540;
  --muted: #766b64;
  --line: #f1e4d8;
  --border: #e7d6c8;
  --white: #ffffff;
  --cream: #fff6ec;
  --peach: #ffe8d9;
  --coral: #e5523f;
  --coral-strong: #c8412d;
  --coral-hover: #b33826;
  --coral-deep: #8e2e1f;
  --recorder-bg: #fdecea;
  --recorder-ink: #6b1f1a;
  --videokeys-bg: #e3f8ef;
  --videokeys-ink: #0a6b50;
  --videokeys-button: #0d8160;
  --videokeys-hover: #0a6b50;
  --bbk-bg: #e8f1fc;
  --bbk-ink: #0b5cad;
  --bbk-button: #1a73e8;
  --bbk-hover: #1967d2;
  --live: #1e6b3a;
  --live-dot: #2e9e5b;
  --soon: #7a5a00;
  --soon-dot: #d99a00;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-zh: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-pop: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font: 17px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html[lang^="zh"] body {
  font-family: var(--font-zh);
}

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

a {
  color: inherit;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--coral-strong);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 50;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
  text-decoration: none;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.icon {
  display: inline-block;
  flex: none;
  width: 18px;
  height: 18px;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.icon-arrow-right { --icon: url("assets/icons/arrow-right.png"); }
.icon-external { --icon: url("assets/icons/external.png"); }
.icon-mail { --icon: url("assets/icons/mail.png"); }
.icon-language { --icon: url("assets/icons/language.png"); }
.icon-check { --icon: url("assets/icons/check.png"); }
.icon-clock { --icon: url("assets/icons/clock.png"); }
.icon-menu { --icon: url("assets/icons/menu.png"); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 8px 28px rgba(46, 42, 40, 0.06);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 80px;
  padding-block: 8px;
}

.brand {
  display: flex;
  align-items: center;
  min-height: 44px;
}

.brand img {
  width: auto;
  height: 60px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--coral-strong);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.lang-switch:hover {
  border-color: var(--coral-strong);
  color: var(--coral-strong);
}

.menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 12px;
  background: var(--cream);
  color: var(--ink);
  cursor: pointer;
}

.menu-button .icon {
  width: 20px;
  height: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 26px;
  border: 1.5px solid transparent;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s, background-color 0.2s, border-color 0.2s;
}

.button .icon {
  transition: transform 0.2s var(--ease-out);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(46, 42, 40, 0.14);
}

.button:hover .icon-arrow-right,
.button:hover .icon-external {
  transform: translateX(3px);
}

.button:active {
  transform: translateY(0);
  box-shadow: none;
}

.button-primary {
  background: var(--coral-strong);
  color: var(--white);
}

.button-primary:hover {
  background: var(--coral-hover);
}

.button-secondary {
  background: var(--white);
  border-color: var(--border);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--coral-strong);
}

.button-plain {
  background: var(--white);
  color: var(--ink);
}

.button-videokeys {
  background: var(--videokeys-button);
  color: var(--white);
}

.button-videokeys:hover {
  background: var(--videokeys-hover);
}

.button-bbk {
  background: var(--bbk-button);
  color: var(--white);
}

.button-bbk:hover {
  background: var(--bbk-hover);
}

.button-pending {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--white);
  color: var(--body);
  font-size: 15px;
  font-weight: 600;
}

.hero {
  overflow: hidden;
  background: var(--cream);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
  align-items: center;
  gap: 48px;
  padding-block: clamp(48px, 8vw, 104px) clamp(56px, 8vw, 112px);
}


.hero h1 {
  margin-bottom: 22px;
  font-size: clamp(2.3rem, 1rem + 4.3vw, 3.9rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

html[lang^="zh"] .hero h1 {
  font-size: clamp(2.1rem, 1rem + 3.6vw, 3.4rem);
  line-height: 1.25;
  letter-spacing: 0;
}

.hero h1 span {
  display: block;
}

.hero h1 .accent {
  color: var(--coral-strong);
}

.lede {
  max-width: 34em;
  margin-bottom: 30px;
  color: var(--body);
  font-size: clamp(1.05rem, 0.95rem + 0.45vw, 1.25rem);
  line-height: 1.65;
}

.hero-art {
  position: relative;
  padding: 0 0 4% 7%;
}

.hero-founder {
  position: absolute;
  left: 0;
  bottom: -3%;
  width: 34%;
}

.section {
  padding-block: clamp(64px, 9vw, 112px);
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(32px, 4vw, 48px);
}

.label {
  margin-bottom: 12px;
  color: var(--coral-strong);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.section h2 {
  margin-bottom: 16px;
  font-size: clamp(1.75rem, 1.15rem + 2.2vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

html[lang^="zh"] .section h2 {
  line-height: 1.35;
  letter-spacing: 0;
}

.section-head p {
  color: var(--body);
  font-size: 18px;
  line-height: 1.75;
}

.section-head strong {
  color: var(--ink);
}

.values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.value {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px;
  border-radius: 28px;
  background: var(--cream);
}

.value img {
  width: 100%;
  height: 220px;
  margin-bottom: 6px;
  object-fit: contain;
}

.value-number {
  color: var(--coral-strong);
  font-size: 14px;
  font-weight: 800;
}

.value h3 {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
}

.value p:last-child {
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}

.products {
  padding-top: 0;
}

.product {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  align-items: center;
  gap: clamp(32px, 5vw, 64px);
  padding: clamp(24px, 4.6vw, 60px);
  border-radius: 36px;
}

.product + .product {
  margin-top: 32px;
}

.product-recorder {
  background: var(--recorder-bg);
}

.product-videokeys {
  background: var(--videokeys-bg);
}

.product-bbk {
  background: var(--bbk-bg);
}

.product-reverse .product-text {
  order: 2;
}

.product-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.product-title {
  display: flex;
  align-items: center;
  gap: 16px;
}

.product-icon {
  flex: none;
  width: 56px;
  height: 56px;
  padding: 8px;
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 6px 16px rgba(46, 42, 40, 0.08);
}

.product-bbk .product-icon {
  padding: 4px;
}

.product h3 {
  font-size: clamp(1.5rem, 1.1rem + 1.2vw, 1.9rem);
  font-weight: 800;
  line-height: 1.2;
}

.product-meta {
  font-size: 15px;
  font-weight: 600;
}

.product-recorder .product-meta { color: var(--recorder-ink); }
.product-videokeys .product-meta { color: var(--videokeys-ink); }
.product-bbk .product-meta { color: var(--bbk-ink); }



.product-desc {
  color: var(--body-strong);
  font-size: 18px;
  line-height: 1.7;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0;
  color: var(--body-strong);
  font-size: 16px;
  list-style: none;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.checklist .icon {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  color: var(--ink);
}

.product-media {
  position: relative;
}

.product-recorder .product-media {
  padding: 0 0 7% 7%;
}

.product-videokeys .product-media {
  padding: 0 7% 7% 0;
}

.media-art {
  position: absolute;
  bottom: -4%;
  width: 42%;
}

.product-recorder .media-art {
  left: -3%;
}

.product-videokeys .media-art {
  right: -3%;
}

.media-pair {
  display: flex;
  align-items: flex-end;
  gap: 16px;
}

.media-pair .phone {
  width: 40%;
}

.media-pair .media-art-inline {
  width: 60%;
}

.founder {
  background: var(--peach);
}

.founder-inner {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 64px);
}

.founder .label {
  color: var(--coral-deep);
}

.founder-text > p {
  margin-bottom: 24px;
  color: var(--body-strong);
  font-size: 18px;
  line-height: 1.75;
}

.principles {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0;
  color: var(--body-strong);
  font-size: 17px;
  list-style: none;
}

.principles li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.principles .icon {
  width: 22px;
  height: 22px;
  margin-top: 3px;
  color: var(--ink);
}

.principles strong {
  color: var(--ink);
}

.contact {
  background: var(--cream);
  text-align: center;
}

.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  max-width: 760px;
}

.contact img {
  width: 200px;
}

.contact .section-head {
  margin-bottom: 8px;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--white);
}

.footer-inner {
  padding-block: 56px 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
}

.footer-brand img {
  width: auto;
  height: 72px;
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--body);
  font-size: 15px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
}

.footer-col h2 {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.footer-col a {
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--coral-strong);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease-out), transform 0.8s var(--ease-out);
  transition-delay: var(--delay, 0s);
}

.js [data-reveal="draw"] {
  opacity: 1;
  transform: none;
  clip-path: inset(100% 0 0 0);
  transition: clip-path 1.1s cubic-bezier(0.65, 0, 0.35, 1);
  transition-delay: var(--delay, 0s);
}

.js [data-reveal="draw-right"] {
  opacity: 1;
  transform: none;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 1.4s cubic-bezier(0.65, 0, 0.35, 1);
  transition-delay: var(--delay, 0s);
}

.js [data-reveal="pop"] {
  transform: translateY(40px) scale(0.88);
  transition: opacity 0.5s var(--ease-out), transform 0.8s var(--ease-pop);
  transition-delay: var(--delay, 0s);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  clip-path: inset(0 0 0 0);
}

.float {
  animation: float 5s ease-in-out infinite;
}

@keyframes float {
  50% {
    translate: 0 -8px;
  }
}

[data-parallax] {
  will-change: translate;
}

@media (max-width: 960px) {
  .hero-inner,
  .product,
  .founder-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-art {
    max-width: 640px;
  }

  .values {
    grid-template-columns: minmax(0, 1fr);
    max-width: 640px;
  }

  .product-reverse .product-text {
    order: 0;
  }

  .founder-image {
    max-width: 300px;
    margin-inline: auto;
  }
}

@media (max-width: 760px) {
  .menu-button {
    display: inline-flex;
  }

  .header-actions {
    gap: 8px;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px clamp(16px, 4vw, 32px) 16px;
    border-bottom: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 16px 28px rgba(46, 42, 40, 0.08);
  }

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

  .nav a {
    display: flex;
    align-items: center;
    min-height: 48px;
    font-size: 16px;
  }

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

  .lang-switch {
    padding: 0 14px;
    font-size: 14px;
  }

  .brand img {
    height: 48px;
  }

  .header-inner {
    min-height: 64px;
  }

  .actions .button,
  .product .actions .button,
  .product .actions .button-pending {
    width: 100%;
  }

  .value {
    padding: 20px;
    border-radius: 24px;
  }

  .value img {
    height: 180px;
  }

  .product {
    border-radius: 28px;
  }

  .product-desc,
  .section-head p,
  .founder-text > p {
    font-size: 16px;
  }

  .footer-top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

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

  .js [data-reveal],
  .js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    clip-path: none;
    transition: none;
  }

  .float {
    animation: none;
  }

  .button,
  .button .icon {
    transition: none;
  }

  .button:hover {
    transform: none;
  }
}