:root {
  color-scheme: light;
  --canvas: #f6f7f2;
  --paper: #ffffff;
  --ink: #102019;
  --muted: #667269;
  --brand: #20b460;
  --brand-deep: #0d6b38;
  --brand-dark: #084b29;
  --mint: #dff8e9;
  --mint-strong: #c9f2da;
  --butter: #fff1a8;
  --sky: #eaf2ff;
  --line: #e3e9e4;
  --shadow: 0 24px 80px rgba(22, 72, 43, 0.1);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--canvas);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  color: inherit;
  font: inherit;
}

img,
svg {
  display: block;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 11px 16px;
  color: white;
  background: var(--brand-dark);
  border-radius: 10px;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 100;
  width: min(var(--max), calc(100% - 48px));
  height: 94px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  transform: translateX(-50%);
}

.brand {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 21px;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand img {
  width: 39px;
  height: 39px;
  border-radius: 11px;
  box-shadow: 0 8px 24px rgba(32, 180, 96, 0.2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  position: relative;
  padding: 12px 0;
  color: #47544b;
  font-size: 14px;
  font-weight: 620;
  transition: color 180ms ease;
}

.nav-links a::after {
  position: absolute;
  right: 50%;
  bottom: 5px;
  left: 50%;
  height: 2px;
  content: "";
  background: var(--brand);
  border-radius: 999px;
  transition: right 180ms ease, left 180ms ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
  left: 0;
}

.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-cta,
.button,
.platform-card > a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border-radius: 999px;
  font-weight: 720;
  transition: transform 180ms ease, color 180ms ease, background 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.header-cta {
  min-height: 44px;
  padding: 0 18px;
  color: white;
  background: var(--ink);
  font-size: 13px;
}

.header-cta svg,
.button svg,
.platform-card > a svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.8;
}

.header-cta:hover,
.button:hover,
.platform-card > a:hover {
  transform: translateY(-2px);
}

.header-cta:hover {
  background: var(--brand-deep);
  box-shadow: 0 12px 28px rgba(13, 107, 56, 0.22);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  padding: 0;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 999px;
  transition: transform 180ms ease;
}

.hero {
  position: relative;
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 174px 0 0;
}

.hero-copy {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 22px;
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.eyebrow span {
  width: 7px;
  height: 7px;
  background: var(--brand);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(32, 180, 96, 0.1);
}

.hero h1 {
  margin: 0;
  font-size: clamp(64px, 7vw, 92px);
  font-weight: 770;
  line-height: 0.99;
  letter-spacing: -0.055em;
}

.hero h1 em {
  color: var(--brand);
  font-style: normal;
}

.hero-lede {
  max-width: 660px;
  margin: 30px auto 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 54px;
  padding: 0 24px;
  font-size: 15px;
}

.button-primary {
  color: white;
  background: var(--ink);
  box-shadow: 0 12px 32px rgba(16, 32, 25, 0.16);
}

.button-primary:hover {
  background: var(--brand-deep);
  box-shadow: 0 16px 34px rgba(13, 107, 56, 0.22);
}

.button-secondary {
  border: 1px solid #d6ded8;
  background: rgba(255, 255, 255, 0.56);
}

.button-secondary:hover {
  border-color: #bbc8be;
  background: white;
}

.product-stage {
  position: relative;
  height: 610px;
  margin-top: 76px;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 16%, rgba(255, 255, 255, 0.9), transparent 24%),
    linear-gradient(145deg, #e9fbf0 0%, var(--mint) 55%, #d0f4df 100%);
  border: 1px solid rgba(13, 107, 56, 0.08);
  border-radius: 42px;
}

.product-stage::before,
.product-stage::after {
  position: absolute;
  content: "";
  border-radius: 50%;
  pointer-events: none;
}

.product-stage::before {
  top: -210px;
  left: -130px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(13, 107, 56, 0.08);
}

.product-stage::after {
  right: -110px;
  bottom: -170px;
  width: 390px;
  height: 390px;
  background: rgba(255, 241, 168, 0.38);
  filter: blur(2px);
}

.stage-caption {
  position: absolute;
  top: 44px;
  left: 50px;
  z-index: 6;
  display: flex;
  align-items: center;
  gap: 14px;
}

.stage-caption span {
  padding: 8px 12px;
  color: var(--brand-deep);
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(13, 107, 56, 0.1);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 760;
}

.stage-caption b {
  font-size: 14px;
}

.desktop-shell {
  position: absolute;
  top: 112px;
  right: 13%;
  left: 6%;
  z-index: 2;
  height: 430px;
  overflow: hidden;
  background: #f8faf8;
  border: 1px solid rgba(16, 32, 25, 0.12);
  border-radius: 25px;
  box-shadow: 0 30px 90px rgba(21, 85, 49, 0.14), 0 2px 5px rgba(16, 32, 25, 0.06);
}

.desktop-toolbar {
  height: 54px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 19px;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid #ebefeb;
}

.traffic-lights {
  display: flex;
  gap: 7px;
}

.traffic-lights i {
  width: 9px;
  height: 9px;
  background: #d8ded9;
  border-radius: 50%;
}

.traffic-lights i:first-child { background: #ff8d80; }
.traffic-lights i:nth-child(2) { background: #ffd36f; }
.traffic-lights i:nth-child(3) { background: #67d993; }

.desktop-brand,
.desktop-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-style: normal;
  font-weight: 720;
}

.desktop-brand img {
  width: 21px;
  height: 21px;
  border-radius: 6px;
}

.desktop-status {
  justify-self: end;
  color: #728077;
  font-weight: 600;
}

.desktop-status i {
  width: 6px;
  height: 6px;
  background: var(--brand);
  border-radius: 50%;
}

.desktop-workspace {
  height: calc(100% - 54px);
  display: grid;
  grid-template-columns: 64px 260px 1fr;
}

.app-rail {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 22px;
  padding-top: 22px;
  background: #f1f5f1;
  border-right: 1px solid #e8ede9;
}

.app-rail img {
  width: 31px;
  height: 31px;
  margin-bottom: 9px;
  border-radius: 9px;
}

.rail-mark {
  width: 19px;
  height: 16px;
  border: 2px solid #adb9b0;
  border-radius: 6px;
}

.rail-mark:nth-of-type(2) { border-radius: 50%; }
.rail-mark:nth-of-type(3) { width: 16px; transform: rotate(45deg); border-radius: 4px; }

.rail-mark.active {
  border-color: var(--brand);
  box-shadow: 0 0 0 7px rgba(32, 180, 96, 0.08);
}

.conversation-list {
  padding: 18px 12px;
  background: white;
  border-right: 1px solid #edf0ed;
}

.search-field,
.phone-search {
  color: #9aa59d;
  background: #f3f6f3;
  border-radius: 10px;
  font-size: 10px;
}

.search-field {
  height: 31px;
  display: flex;
  align-items: center;
  margin: 0 7px 13px;
  padding: 0 11px;
}

.conversation-item,
.phone-chat,
.people-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
}

.conversation-item {
  gap: 10px;
  min-height: 63px;
  padding: 8px 9px;
  border-radius: 12px;
}

.conversation-item.active {
  background: #ecf8f1;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  color: white;
  border-radius: 34%;
  font-style: normal;
  font-weight: 760;
}

.conversation-item .avatar {
  width: 35px;
  height: 35px;
  font-size: 11px;
}

.avatar-green { background: linear-gradient(145deg, #24bd69, #0a8747); }
.avatar-blue { background: linear-gradient(145deg, #73a9ff, #4b77d9); }
.avatar-yellow { color: #6d5610; background: linear-gradient(145deg, #ffe583, #f5c349); }

.conversation-item span,
.phone-chat span,
.people-row span {
  min-width: 0;
}

.conversation-item b,
.conversation-item small,
.conversation-item .chat-time,
.phone-chat b,
.phone-chat small,
.phone-chat .chat-time,
.people-row b,
.people-row small {
  display: block;
}

.conversation-item b {
  margin-bottom: 4px;
  font-size: 11px;
}

.conversation-item small,
.conversation-item .chat-time {
  color: #96a198;
  font-size: 9px;
}

.chat-time {
  font-style: normal;
}

.conversation-view {
  position: relative;
  min-width: 0;
  background: #f8faf8;
}

.conversation-head {
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid #edf0ed;
}

.conversation-head span,
.conversation-head b,
.conversation-head small {
  display: block;
}

.conversation-head b { font-size: 12px; }
.conversation-head small { margin-top: 2px; color: #95a097; font-size: 9px; }
.conversation-head i { color: #a3ada5; font-size: 11px; font-style: normal; letter-spacing: 0.12em; }

.message-canvas {
  padding: 20px 22px 64px;
}

.date-line {
  margin: 0 0 15px;
  color: #a2aba4;
  font-size: 9px;
  text-align: center;
}

.message-line {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 10px;
}

.message-line .avatar {
  width: 26px;
  height: 26px;
  font-size: 8px;
}

.message-line span {
  max-width: 260px;
  padding: 10px 12px;
  background: white;
  border: 1px solid #edf0ed;
  border-radius: 12px 12px 12px 3px;
  font-size: 10px;
}

.message-line.outgoing {
  justify-content: flex-end;
}

.message-line.outgoing span {
  background: #baf0cf;
  border-color: #baf0cf;
  border-radius: 12px 12px 3px 12px;
}

.file-card {
  width: 210px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 9px;
  margin: 14px 0 0 34px;
  padding: 10px;
  background: white;
  border: 1px solid #e9eee9;
  border-radius: 12px;
  box-shadow: 0 7px 20px rgba(16, 32, 25, 0.04);
}

.file-card > i {
  width: 34px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #bc574e;
  background: #fff0ed;
  border-radius: 8px;
  font-size: 8px;
  font-style: normal;
  font-weight: 800;
}

.file-card span,
.file-card b,
.file-card small { display: block; }
.file-card b { font-size: 9px; }
.file-card small { margin-top: 3px; color: #9aa39c; font-size: 8px; }
.file-card em { color: var(--brand-deep); font-size: 15px; font-style: normal; }

.composer {
  position: absolute;
  right: 16px;
  bottom: 13px;
  left: 16px;
  height: 43px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 9px 0 14px;
  color: #9ca69e;
  background: white;
  border: 1px solid #e8ede9;
  border-radius: 12px;
  font-size: 9px;
}

.composer b {
  padding: 7px 11px;
  color: white;
  background: var(--brand);
  border-radius: 7px;
  font-size: 9px;
}

.phone-shell {
  position: absolute;
  right: 6.5%;
  bottom: -27px;
  z-index: 5;
  width: 258px;
  height: 526px;
  padding: 8px;
  background: #16201a;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 43px;
  box-shadow: 0 32px 70px rgba(21, 85, 49, 0.24), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.phone-shell::after {
  position: absolute;
  right: -3px;
  top: 120px;
  width: 3px;
  height: 65px;
  content: "";
  background: #263129;
  border-radius: 0 3px 3px 0;
}

.phone-sensor {
  position: absolute;
  top: 15px;
  left: 50%;
  z-index: 3;
  width: 74px;
  height: 20px;
  background: #16201a;
  border-radius: 999px;
  transform: translateX(-50%);
}

.phone-screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  background: white;
  border-radius: 35px;
}

.phone-status {
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  font-size: 8px;
}

.phone-status span {
  font-size: 6px;
  letter-spacing: 0.02em;
}

.phone-title {
  height: 47px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 17px;
}

.phone-title span {
  font-size: 18px;
  font-weight: 780;
}

.phone-title i {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--brand);
  border-radius: 50%;
  font-size: 15px;
  font-style: normal;
}

.phone-search {
  height: 29px;
  display: flex;
  align-items: center;
  margin: 0 13px 7px;
  padding: 0 10px;
}

.phone-chat {
  gap: 9px;
  margin: 0 7px;
  padding: 11px 7px;
  border-bottom: 1px solid #f0f2f0;
  border-radius: 11px;
}

.phone-chat.active {
  background: #edf9f2;
  border-bottom-color: transparent;
}

.phone-chat .avatar {
  width: 39px;
  height: 39px;
  font-size: 12px;
}

.phone-chat b {
  margin-bottom: 4px;
  font-size: 10px;
}

.phone-chat small,
.phone-chat .chat-time {
  overflow: hidden;
  color: #97a199;
  font-size: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.phone-chat .chat-time { align-self: start; padding-top: 3px; }

.phone-tabs {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding-top: 7px;
  background: rgba(255, 255, 255, 0.96);
  border-top: 1px solid #edf0ed;
}

.phone-tabs span {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 5px;
  color: #a0aaa2;
  font-size: 7px;
}

.phone-tabs i {
  width: 17px;
  height: 14px;
  border: 1.5px solid currentColor;
  border-radius: 5px;
}

.phone-tabs .active { color: var(--brand-deep); font-weight: 700; }

.sync-badge {
  position: absolute;
  right: 23%;
  bottom: 52px;
  z-index: 7;
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 220px;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(13, 107, 56, 0.12);
  border-radius: 17px;
  box-shadow: 0 16px 44px rgba(22, 72, 43, 0.14);
  backdrop-filter: blur(14px);
}

.sync-badge > i {
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--brand);
  border-radius: 50%;
  font-size: 13px;
  font-style: normal;
}

.sync-badge span,
.sync-badge b,
.sync-badge small { display: block; }
.sync-badge b { font-size: 12px; }
.sync-badge small { margin-top: 3px; color: var(--muted); font-size: 9px; }

.platform-line {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 9px;
  border-bottom: 1px solid var(--line);
}

.platform-line > span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.platform-line ul {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.platform-line li {
  padding: 9px 13px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 660;
}

.download-section,
.features-section,
.install-section {
  padding: 150px max(24px, calc((100vw - var(--max)) / 2));
}

.section-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 80px;
  margin-bottom: 62px;
}

.section-kicker {
  margin-bottom: 16px;
}

.section-intro h2 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(44px, 5vw, 62px);
  font-weight: 750;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.section-intro > p {
  max-width: 420px;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.download-section {
  background: var(--canvas);
}

.download-intro {
  align-items: center;
}

.detected-device {
  display: flex;
  align-items: center;
  gap: 13px;
  min-width: 222px;
  padding: 15px 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 17px;
  box-shadow: 0 10px 32px rgba(22, 72, 43, 0.05);
}

.detected-device > span {
  width: 10px;
  height: 10px;
  background: var(--brand);
  border: 3px solid #d8f6e4;
  border-radius: 50%;
  box-sizing: content-box;
}

.detected-device p,
.detected-device small,
.detected-device b {
  display: block;
  margin: 0;
}

.detected-device small {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 10px;
}

.detected-device b {
  font-size: 13px;
}

.download-panel {
  padding: 32px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.download-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 4px 24px;
  border-bottom: 1px solid var(--line);
}

.download-panel-head p {
  margin: 0;
  font-size: 16px;
  font-weight: 730;
}

.download-panel-head span {
  color: var(--muted);
  font-size: 12px;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  padding: 25px 0;
}

.platform-card {
  position: relative;
  min-height: 276px;
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  padding: 21px;
  overflow: hidden;
  background: #f7f9f7;
  border: 1px solid #edf0ed;
  border-radius: 21px;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.platform-card:hover {
  transform: translateY(-4px);
  border-color: #cbd7ce;
  box-shadow: 0 18px 44px rgba(22, 72, 43, 0.08);
}

.platform-card.recommended-device {
  background: #eefaf3;
  border-color: rgba(32, 180, 96, 0.5);
  box-shadow: 0 16px 38px rgba(32, 180, 96, 0.1);
}

.platform-card.recommended-device::after {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 5px 8px;
  content: "当前设备";
  color: var(--brand-deep);
  background: rgba(32, 180, 96, 0.1);
  border-radius: 999px;
  font-size: 8px;
  font-weight: 800;
}

.platform-icon {
  width: 45px;
  height: 45px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  color: var(--ink);
  background: white;
  border: 1px solid #e9ede9;
  border-radius: 13px;
  box-shadow: 0 7px 20px rgba(16, 32, 25, 0.05);
}

.platform-icon svg {
  width: 25px;
  height: 25px;
  stroke-width: 1.7;
}

.platform-icon svg path:not([d*="m5 7"]) {
  fill: none;
}

.platform-icon svg text {
  fill: currentColor;
  stroke: none;
  font-size: 10px;
  font-weight: 800;
  text-anchor: middle;
}

.platform-card > p {
  margin: 0 0 6px;
  color: var(--brand-deep);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.platform-card h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.3;
}

.platform-card > small {
  display: block;
  margin: 8px 0 18px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.platform-card > a {
  width: 100%;
  min-height: 39px;
  margin-top: auto;
  padding: 0 12px;
  color: white;
  background: var(--ink);
  border-radius: 11px;
  font-size: 11px;
}

.platform-card > a:hover {
  background: var(--brand-deep);
}

.platform-card > a svg {
  width: 15px;
  height: 15px;
}

.card-note {
  position: absolute;
  top: 18px;
  right: -30px;
  width: 110px;
  padding: 5px 0;
  color: #634f0c;
  background: var(--butter);
  font-size: 8px;
  font-weight: 800;
  text-align: center;
  transform: rotate(37deg);
}

.release-note {
  min-height: 78px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 15px;
  padding: 15px 18px;
  background: #faf8ef;
  border: 1px solid #eee8ce;
  border-radius: 16px;
}

.release-symbol {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  color: #6f5f1e;
  background: var(--butter);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-weight: 700;
}

.release-note strong,
.release-note p { display: block; margin: 0; }
.release-note strong { margin-bottom: 4px; font-size: 12px; }
.release-note p { color: #756f58; font-size: 11px; line-height: 1.6; }
.release-note > a { color: var(--brand-deep); font-size: 11px; font-weight: 750; white-space: nowrap; }

.features-section {
  background: white;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  position: relative;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  padding: 46px;
  overflow: hidden;
  border-radius: 32px;
}

.feature-sync {
  min-height: 520px;
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  background: var(--mint);
}

.feature-file { background: var(--butter); }
.feature-people { background: var(--sky); }

.feature-copy {
  position: relative;
  z-index: 2;
  max-width: 480px;
}

.feature-copy > span {
  display: block;
  margin-bottom: 18px;
  color: var(--brand-deep);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.feature-copy h3 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.feature-copy p {
  max-width: 430px;
  margin: 18px 0 0;
  color: #5f6e64;
  font-size: 15px;
  line-height: 1.75;
}

.sync-visual {
  position: relative;
  min-height: 330px;
}

.mini-phone,
.mini-desktop {
  position: absolute;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(13, 107, 56, 0.1);
  box-shadow: 0 22px 60px rgba(22, 72, 43, 0.12);
}

.mini-phone {
  top: 37px;
  left: 6%;
  width: 180px;
  height: 255px;
  padding: 65px 20px 20px;
  border: 7px solid #14301f;
  border-radius: 30px;
  transform: rotate(-4deg);
}

.mini-phone::before {
  position: absolute;
  top: 10px;
  left: 50%;
  width: 60px;
  height: 16px;
  content: "";
  background: #14301f;
  border-radius: 999px;
  transform: translateX(-50%);
}

.mini-desktop {
  right: 1%;
  bottom: 24px;
  width: 380px;
  height: 238px;
  padding: 58px 27px 24px;
  border-radius: 22px;
  transform: rotate(2deg);
}

.mini-desktop::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 36px;
  content: "";
  background: #f4f8f5;
  border-bottom: 1px solid #e8ede9;
  border-radius: 22px 22px 0 0;
}

.mini-phone span,
.mini-desktop span {
  font-size: 12px;
  font-weight: 760;
}

.mini-phone p,
.mini-desktop p {
  align-self: flex-start;
  margin: 18px 0 0;
  padding: 12px 14px;
  background: #c2f2d5;
  border-radius: 13px 13px 4px 13px;
  font-size: 10px;
}

.mini-phone small,
.mini-desktop small {
  margin-top: auto;
  color: var(--muted);
  font-size: 9px;
}

.sync-path {
  position: absolute;
  top: 44%;
  left: 43%;
  z-index: 5;
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  color: white;
  background: var(--brand);
  border: 8px solid rgba(255, 255, 255, 0.86);
  border-radius: 50%;
  box-shadow: 0 12px 32px rgba(32, 180, 96, 0.3);
  font-style: normal;
}

.sync-path b { font-size: 17px; }

.file-visual,
.people-visual {
  position: relative;
  min-height: 250px;
  margin-top: auto;
}

.floating-file {
  position: absolute;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 13px;
  width: min(390px, 86%);
  padding: 17px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(99, 79, 12, 0.09);
  border-radius: 18px;
  box-shadow: 0 18px 48px rgba(111, 86, 10, 0.1);
}

.floating-file > i {
  width: 48px;
  height: 55px;
  display: grid;
  place-items: center;
  color: #b44b42;
  background: #fff0ed;
  border-radius: 12px;
  font-size: 10px;
  font-style: normal;
  font-weight: 820;
}

.floating-file span,
.floating-file b,
.floating-file small { display: block; }
.floating-file b { font-size: 13px; }
.floating-file small { margin-top: 5px; color: var(--muted); font-size: 10px; }
.floating-file em { width: 25px; height: 25px; display: grid; place-items: center; color: white; background: var(--brand); border-radius: 50%; font-size: 10px; font-style: normal; }

.file-pdf { top: 45px; left: 3%; transform: rotate(-3deg); }
.file-image { right: 2%; bottom: 24px; transform: rotate(3deg); }
.file-image > i { color: #4773ba; background: var(--sky); }

.people-visual {
  min-height: 260px;
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex-direction: column;
  gap: 9px;
  padding: 26px 29px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(68, 106, 161, 0.08);
  border-radius: 23px;
  box-shadow: 0 22px 56px rgba(54, 85, 128, 0.1);
}

.people-row {
  gap: 13px;
  padding: 12px;
  background: white;
  border: 1px solid #eef2f6;
  border-radius: 15px;
}

.people-row .avatar { width: 42px; height: 42px; font-size: 12px; }
.people-row b { margin-bottom: 4px; font-size: 12px; }
.people-row small { color: var(--muted); font-size: 9px; }
.people-row em { color: #91a0ad; font-size: 20px; font-style: normal; }

.install-section {
  background: var(--canvas);
}

.install-intro {
  align-items: center;
}

.checksum-card {
  min-width: 330px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.checksum-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(22, 72, 43, 0.08);
}

.checksum-card > span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--brand-deep);
  background: var(--mint);
  border-radius: 12px;
  font-weight: 800;
}

.checksum-card p,
.checksum-card small,
.checksum-card b { display: block; margin: 0; }
.checksum-card small { margin-bottom: 4px; color: var(--muted); font-size: 10px; }
.checksum-card b { font-size: 12px; }
.checksum-card > i { color: var(--brand-deep); font-size: 17px; font-style: normal; }

.install-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 20px;
}

.install-steps,
.help-accordion {
  margin: 0;
  padding: 32px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 28px;
}

.install-steps {
  list-style: none;
}

.install-steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.install-steps li:first-child { padding-top: 0; }
.install-steps li:last-child { padding-bottom: 0; border-bottom: 0; }

.install-steps li > span {
  width: 45px;
  height: 45px;
  display: grid;
  place-items: center;
  color: var(--brand-deep);
  background: var(--mint);
  border-radius: 14px;
  font-size: 11px;
  font-weight: 800;
}

.install-steps h3 {
  margin: 1px 0 7px;
  font-size: 15px;
}

.install-steps p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.help-accordion details {
  border-bottom: 1px solid var(--line);
}

.help-accordion details:first-child summary { padding-top: 2px; }
.help-accordion details:last-child { border-bottom: 0; }
.help-accordion details:last-child summary { padding-bottom: 2px; }

.help-accordion summary {
  min-height: 71px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

.help-accordion summary::-webkit-details-marker { display: none; }

.help-accordion summary span {
  position: relative;
  width: 27px;
  height: 27px;
  flex: 0 0 auto;
  background: #f3f6f3;
  border-radius: 50%;
}

.help-accordion summary span::before,
.help-accordion summary span::after {
  position: absolute;
  top: 13px;
  left: 8px;
  width: 11px;
  height: 1px;
  content: "";
  background: var(--ink);
  transition: transform 180ms ease;
}

.help-accordion summary span::after { transform: rotate(90deg); }
.help-accordion details[open] summary span::after { transform: rotate(0); }

.help-accordion details p {
  max-width: 580px;
  margin: -4px 0 20px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.closing-section {
  position: relative;
  width: min(var(--max), calc(100% - 48px));
  min-height: 430px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 38px;
  margin: 0 auto 34px;
  padding: 66px;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 85% 20%, rgba(72, 214, 128, 0.32), transparent 30%),
    var(--brand-dark);
  border-radius: 40px;
}

.closing-section::after {
  position: absolute;
  right: -140px;
  bottom: -270px;
  width: 520px;
  height: 520px;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.closing-mark {
  width: 68px;
  height: 68px;
  position: relative;
  z-index: 1;
  padding: 8px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
}

.closing-mark img {
  width: 100%;
  height: 100%;
  border-radius: 14px;
}

.closing-section > div:nth-child(2) {
  position: relative;
  z-index: 1;
}

.closing-section p {
  margin: 0 0 15px;
  color: #bde8cd;
  font-size: 12px;
  font-weight: 720;
  letter-spacing: 0.08em;
}

.closing-section h2 {
  max-width: 670px;
  margin: 0;
  font-size: clamp(38px, 4.5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.button-light {
  position: relative;
  z-index: 2;
  color: var(--brand-dark);
  background: white;
  white-space: nowrap;
}

.button-light:hover {
  box-shadow: 0 15px 36px rgba(0, 0, 0, 0.15);
}

.site-footer {
  width: min(var(--max), calc(100% - 48px));
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 45px;
  margin: 0 auto;
  padding: 56px 0 38px;
}

.footer-main p {
  margin: 15px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 24px;
  padding-top: 10px;
}

.footer-links a {
  color: var(--muted);
  font-size: 12px;
  transition: color 180ms ease;
}

.footer-links a:hover { color: var(--brand-deep); }

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  color: #909991;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.mobile-download-bar {
  position: fixed;
  right: 12px;
  bottom: calc(12px + env(safe-area-inset-bottom));
  left: 12px;
  z-index: 120;
  display: none;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 9px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(16, 32, 25, 0.1);
  border-radius: 18px;
  box-shadow: 0 18px 60px rgba(16, 32, 25, 0.18);
  backdrop-filter: blur(18px);
  transform: translateY(calc(150% + env(safe-area-inset-bottom)));
  transition: transform 220ms ease;
}

.mobile-download-bar img {
  width: 39px;
  height: 39px;
  border-radius: 11px;
}

.mobile-download-bar span,
.mobile-download-bar b,
.mobile-download-bar small { display: block; }
.mobile-download-bar b { font-size: 12px; }
.mobile-download-bar small { max-width: 135px; margin-top: 2px; overflow: hidden; color: var(--muted); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.mobile-download-bar > a { padding: 11px 15px; color: white; background: var(--ink); border-radius: 11px; font-size: 11px; font-weight: 740; }

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  z-index: 150;
  padding: 12px 18px;
  color: white;
  background: rgba(16, 32, 25, 0.94);
  border-radius: 999px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.16);
  font-size: 12px;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 20px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms cubic-bezier(0.2, 0.72, 0.24, 1), transform 700ms cubic-bezier(0.2, 0.72, 0.24, 1);
}

.reveal-ready [data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .desktop-workspace { grid-template-columns: 58px 220px 1fr; }
  .desktop-shell { right: 9%; left: 4%; }
  .phone-shell { right: 4%; }
  .sync-badge { right: 23%; }
  .platform-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .platform-card { min-height: 250px; }
  .feature-sync { grid-template-columns: 0.9fr 1.1fr; }
  .mini-desktop { width: 320px; }
  .closing-section { grid-template-columns: auto 1fr; }
  .closing-section .button-light { grid-column: 2; justify-self: start; }
}

@media (max-width: 820px) {
  .site-header {
    top: 10px;
    width: calc(100% - 28px);
    height: 64px;
    grid-template-columns: 1fr auto;
    padding: 0 10px 0 12px;
    background: rgba(255, 255, 255, 0.86);
    border: 1px solid rgba(16, 32, 25, 0.08);
    border-radius: 18px;
    box-shadow: 0 12px 35px rgba(22, 72, 43, 0.07);
    backdrop-filter: blur(16px);
  }

  .brand { font-size: 17px; }
  .brand img { width: 34px; height: 34px; border-radius: 9px; }
  .header-actions { gap: 7px; }
  .header-cta { min-height: 39px; padding: 0 13px; font-size: 11px; }
  .header-cta svg { display: none; }
  .menu-toggle { display: flex; width: 39px; height: 39px; }

  .nav-links {
    position: absolute;
    top: 69px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 9px;
    visibility: hidden;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(16, 32, 25, 0.09);
    border-radius: 17px;
    box-shadow: 0 18px 48px rgba(22, 72, 43, 0.12);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
    backdrop-filter: blur(18px);
  }

  .nav-links a { padding: 13px 12px; border-radius: 10px; }
  .nav-links a::after { display: none; }
  .nav-links a:hover { background: #f3f7f4; }
  .menu-open .nav-links { visibility: visible; opacity: 1; transform: translateY(0); }
  .menu-open .menu-toggle span:first-child { transform: translateY(3.8px) rotate(45deg); }
  .menu-open .menu-toggle span:last-child { transform: translateY(-3.8px) rotate(-45deg); }

  .hero { width: calc(100% - 28px); padding-top: 136px; }
  .hero h1 { font-size: clamp(54px, 13vw, 74px); }
  .hero-lede { max-width: 560px; font-size: 16px; }
  .product-stage { height: 540px; margin-top: 60px; border-radius: 30px; }
  .stage-caption { top: 28px; left: 28px; }
  .desktop-shell { top: 100px; right: auto; left: -210px; width: 780px; height: 370px; }
  .phone-shell { right: 7%; width: 230px; height: 468px; }
  .sync-badge { right: 27%; bottom: 34px; }
  .platform-line { padding: 15px 4px; }
  .platform-line ul { gap: 5px; }
  .platform-line li { padding: 8px 10px; font-size: 10px; }

  .download-section,
  .features-section,
  .install-section { padding: 112px 24px; }

  .section-intro { align-items: flex-start; flex-direction: column; gap: 24px; margin-bottom: 45px; }
  .section-intro h2 { font-size: clamp(40px, 8vw, 54px); }
  .section-intro > p { max-width: 600px; }
  .download-intro,
  .install-intro { align-items: flex-start; }
  .platform-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-sync { grid-template-columns: 1fr; gap: 35px; }
  .sync-visual { width: min(600px, 100%); margin: 0 auto; }
  .feature-card { min-height: 480px; padding: 38px; }
  .install-layout { grid-template-columns: 1fr; }
  .closing-section { width: calc(100% - 48px); padding: 50px; }
  .site-footer { width: calc(100% - 48px); grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 620px) {
  html { scroll-padding-top: 82px; }
  .site-header { width: calc(100% - 20px); }
  .header-cta { max-width: 116px; overflow: hidden; white-space: nowrap; }
  .hero { width: calc(100% - 20px); padding-top: 126px; }
  .eyebrow { margin-bottom: 18px; font-size: 11px; }
  .hero h1 { font-size: clamp(50px, 15vw, 64px); letter-spacing: -0.045em; }
  .hero-lede { margin-top: 24px; padding: 0 8px; font-size: 15px; line-height: 1.75; }
  .hero-actions { align-items: stretch; flex-direction: column; margin: 28px auto 0; width: min(330px, 100%); }
  .button { min-height: 52px; }

  .product-stage { height: 500px; margin-top: 52px; border-radius: 25px; }
  .stage-caption { top: 24px; left: 22px; }
  .stage-caption b { display: none; }
  .desktop-shell { top: 88px; left: 50%; width: 680px; height: 335px; transform: translateX(-72%); }
  .desktop-workspace { grid-template-columns: 55px 220px 1fr; }
  .phone-shell { right: 50%; bottom: -20px; width: 212px; height: 430px; transform: translateX(64%); }
  .phone-title { height: 43px; }
  .phone-title span { font-size: 16px; }
  .phone-chat { padding: 9px 6px; }
  .phone-chat .avatar { width: 35px; height: 35px; }
  .sync-badge { right: auto; bottom: 19px; left: 16px; min-width: 0; padding: 10px; }
  .sync-badge span { display: none; }
  .sync-badge > i { width: 29px; height: 29px; }
  .platform-line { align-items: flex-start; flex-direction: column; gap: 12px; min-height: 0; padding: 23px 4px; }
  .platform-line ul { width: 100%; flex-wrap: wrap; }

  .download-section,
  .features-section,
  .install-section { padding: 92px 18px; }
  .section-intro { margin-bottom: 36px; }
  .section-kicker { margin-bottom: 12px; font-size: 11px; }
  .section-intro h2 { font-size: 40px; letter-spacing: -0.04em; }
  .section-intro > p { font-size: 14px; }
  .detected-device { width: 100%; min-width: 0; }
  .download-panel { padding: 16px; border-radius: 25px; }
  .download-panel-head { align-items: flex-start; flex-direction: column; gap: 5px; padding: 4px 3px 17px; }
  .platform-grid { grid-template-columns: 1fr; gap: 9px; padding: 16px 0; }

  .platform-card {
    min-height: 0;
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto auto;
    column-gap: 13px;
    padding: 16px;
    border-radius: 17px;
  }

  .platform-icon { grid-row: 1 / 4; margin: 0; align-self: center; }
  .platform-card > p { grid-column: 2; margin: 0 0 3px; }
  .platform-card h3 { grid-column: 2; font-size: 14px; }
  .platform-card > small { grid-column: 2; margin: 4px 0 0; font-size: 9px; }
  .platform-card > a { grid-column: 3; grid-row: 1 / 4; width: auto; min-width: 84px; margin: 0; align-self: center; }
  .platform-card > a svg { display: none; }
  .platform-card.recommended-device::after { display: none; }
  .card-note { display: none; }
  .release-note { grid-template-columns: auto 1fr; }
  .release-note > a { grid-column: 2; }

  .feature-grid { grid-template-columns: 1fr; gap: 12px; }
  .feature-sync { grid-column: auto; }
  .feature-card { min-height: 465px; padding: 29px; border-radius: 25px; }
  .feature-copy h3 { font-size: 30px; }
  .feature-copy p { font-size: 13px; }
  .sync-visual { min-height: 275px; }
  .mini-phone { left: 0; width: 145px; height: 215px; padding: 55px 13px 14px; }
  .mini-desktop { right: -62px; width: 275px; height: 190px; padding: 50px 19px 18px; }
  .mini-phone p,
  .mini-desktop p { padding: 9px; font-size: 8px; }
  .sync-path { left: 39%; width: 48px; height: 48px; border-width: 6px; }
  .file-visual { min-height: 235px; }
  .floating-file { width: 94%; }
  .people-visual { padding: 18px; }

  .checksum-card { width: 100%; min-width: 0; }
  .install-steps,
  .help-accordion { padding: 23px; border-radius: 22px; }
  .install-steps li { grid-template-columns: 42px 1fr; gap: 13px; }
  .install-steps li > span { width: 40px; height: 40px; }

  .closing-section {
    width: calc(100% - 20px);
    min-height: 455px;
    grid-template-columns: 1fr;
    align-content: center;
    gap: 25px;
    margin-bottom: 10px;
    padding: 35px 28px;
    border-radius: 28px;
  }

  .closing-mark { width: 58px; height: 58px; }
  .closing-section h2 { font-size: 39px; }
  .closing-section .button-light { grid-column: 1; justify-self: stretch; }
  .site-footer { width: calc(100% - 36px); padding-bottom: 110px; }
  .footer-links { display: grid; grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 7px; }
  .mobile-download-bar { display: grid; }
  body.mobile-bar-visible .mobile-download-bar { transform: translateY(0); }
  body.mobile-bar-visible .toast { bottom: 96px; }
}

@media (max-width: 390px) {
  .header-cta { display: none; }
  .hero h1 { font-size: 50px; }
  .platform-card { grid-template-columns: auto 1fr; }
  .platform-card > a { grid-column: 2; grid-row: 4; margin-top: 12px; justify-self: stretch; }
  .platform-icon { grid-row: 1 / 4; }
  .release-note { padding: 14px; }
  .feature-card { padding: 24px; }
  .mini-desktop { right: -90px; }
  .closing-section h2 { font-size: 35px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}