:root {
  --blue: #366bb3;
  --blue-dark: #23538f;
  --cyan: #12c0ff;
  --charcoal: #2b333a;
  --ink: #182231;
  --muted: #687789;
  --line: #dbe3ec;
  --soft: #f5f7fa;
  --white: #ffffff;
  --green: #20b97a;
  --shell: min(1180px, calc(100vw - 48px));
  --shadow: 0 22px 58px rgba(28, 54, 84, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  color: inherit;
  font: inherit;
}

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

button {
  border: 0;
}

h1,
h2,
h3,
p,
ul,
ol,
figure {
  margin-top: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 9999;
  top: 10px;
  left: 10px;
  padding: 10px 15px;
  color: #fff;
  background: #111820;
  border-radius: 6px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.scroll-meter {
  position: fixed;
  z-index: 1100;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  pointer-events: none;
}

.scroll-meter span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transform: scaleX(0);
  transform-origin: left center;
}

.section-shell,
.header-shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 4px solid #587ab9;
  transition: border-color 180ms ease, box-shadow 180ms ease, backdrop-filter 180ms ease;
}

.site-header.is-scrolled {
  border-bottom-width: 1px;
  border-color: #d1dce8;
  box-shadow: 0 10px 34px rgba(28, 51, 78, 0.09);
  backdrop-filter: blur(16px);
}

.header-shell {
  height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
  transition: height 180ms ease;
}

.site-header.is-scrolled .header-shell {
  height: 66px;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand > img {
  width: 36px;
  height: 36px;
}

.brand > span,
.footer-brand > span {
  display: grid;
  line-height: 1.15;
}

.brand b,
.footer-brand b {
  color: #456ca6;
  font-size: 19px;
  letter-spacing: 0.05em;
}

.brand small,
.footer-brand small {
  margin-top: 4px;
  color: #8793a2;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 23px;
}

.site-nav a {
  position: relative;
  padding: 25px 0;
  color: #536173;
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 17px;
  left: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--blue-dark);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-download {
  min-height: 44px;
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #fff;
  background: var(--blue);
  border: 1px solid #315f9c;
  border-radius: 7px;
  box-shadow: 0 8px 18px rgba(54, 107, 179, 0.2);
  font-size: 13px;
  font-weight: 750;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.header-download:hover,
.header-download:focus-visible {
  background: var(--blue-dark);
  box-shadow: 0 12px 24px rgba(36, 83, 143, 0.26);
  transform: translateY(-2px);
}

.windows-icon {
  width: 18px;
  height: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 2px;
  flex: 0 0 auto;
  transform: skewY(-4deg);
}

.windows-icon i {
  display: block;
  background: currentColor;
}

.menu-toggle {
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 10px;
  display: none;
  background: #fff;
  border: 1px solid #d7e0e9;
  border-radius: 7px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: #2c3846;
  transition: opacity 180ms ease, transform 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 790px;
  padding: 144px 0 85px;
  color: #fff;
  background:
    radial-gradient(circle at 80% 30%, rgba(18, 192, 255, 0.13), transparent 31%),
    linear-gradient(135deg, #252c33, #2b333a 56%, #222a31);
  overflow: hidden;
}

.hero-grid,
.banner-grid {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, #000, transparent 92%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.glow-one {
  top: -230px;
  right: -160px;
  width: 580px;
  height: 580px;
  border: 1px solid rgba(85, 181, 255, 0.15);
  box-shadow: inset 0 0 110px rgba(37, 117, 190, 0.08);
}

.glow-two {
  bottom: -140px;
  left: -130px;
  width: 330px;
  height: 330px;
  background: rgba(56, 108, 180, 0.08);
  border: 56px solid rgba(255, 255, 255, 0.015);
}

.hero-shell {
  position: relative;
  z-index: 2;
  width: var(--shell);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  align-items: center;
  gap: 72px;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #a9b6c5;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.hero-kicker span {
  padding: 4px 8px;
  color: #052338;
  background: var(--cyan);
  border-radius: 4px;
  font-size: 9px;
}

.hero h1 {
  margin: 27px 0 14px;
  font-size: clamp(54px, 5.6vw, 78px);
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-shadow: 0 5px 24px rgba(0, 0, 0, 0.25);
}

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

.hero-slogan {
  margin-bottom: 23px;
  color: #ff7276;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero-lead {
  max-width: 650px;
  margin-bottom: 25px;
  color: #c4ccd5;
  font-size: 16px;
  line-height: 1.9;
}

.hero-badges {
  margin-bottom: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badges span {
  padding: 6px 10px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #bfcbd7;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  font-size: 10px;
}

.hero-badges i {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(32, 185, 122, 0.12);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.download-primary {
  min-width: 285px;
  min-height: 72px;
  padding: 0 18px 0 21px;
  display: flex;
  align-items: center;
  gap: 15px;
  color: #fff;
  background: linear-gradient(135deg, #3c75bf, #2c5f9e);
  border: 1px solid #4a82c8;
  border-radius: 8px;
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.25);
  transition: transform 190ms ease, box-shadow 190ms ease, background 190ms ease;
}

.download-primary::before,
.banner-download::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 20%, rgba(255, 255, 255, 0.18) 50%, transparent 80%);
  transform: translateX(-130%);
  transition: transform 620ms ease;
}

.download-primary {
  position: relative;
  overflow: hidden;
}

.download-primary:hover::before,
.download-primary:focus-visible::before,
.banner-download:hover::before,
.banner-download:focus-visible::before {
  transform: translateX(130%);
}

.download-primary:hover,
.download-primary:focus-visible {
  background: linear-gradient(135deg, #447fc9, #326caf);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
  transform: translateY(-3px);
}

.download-primary .windows-icon {
  width: 25px;
  height: 25px;
}

.download-primary > span:nth-child(2) {
  display: grid;
  line-height: 1.2;
}

.download-primary b {
  font-size: 17px;
}

.download-primary small {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 9px;
}

.download-primary strong {
  margin-left: auto;
  font-size: 24px;
  font-weight: 400;
}

.learn-more {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #d6dce3;
  border-bottom: 1px solid #768695;
  font-size: 12px;
  font-weight: 700;
}

.learn-more span {
  color: var(--cyan);
  transition: transform 180ms ease;
}

.learn-more:hover span,
.learn-more:focus-visible span {
  transform: translateY(4px);
}

.platforms {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.platforms small {
  margin-right: 5px;
  color: #758493;
  font-size: 9px;
}

.platforms span {
  padding: 4px 7px;
  color: #98a7b6;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  font-size: 8px;
}

.platforms > i {
  color: #758493;
  font-size: 9px;
  font-style: normal;
}

.hero-art {
  --art-x: 0px;
  --art-y: 0px;
  position: relative;
  height: 525px;
  perspective: 1200px;
}

.mascot-ring {
  position: absolute;
  top: 53px;
  left: 50%;
  width: 350px;
  height: 350px;
  border: 1px solid rgba(83, 164, 231, 0.22);
  border-radius: 50%;
  transform: translate(calc(-50% + var(--art-x)), var(--art-y));
  transition: transform 220ms ease-out;
  box-shadow: inset 0 0 80px rgba(28, 111, 181, 0.08), 0 0 80px rgba(8, 22, 34, 0.25);
}

.mascot-ring::before,
.mascot-ring::after {
  content: "";
  position: absolute;
  inset: 33px;
  border: 1px dashed rgba(126, 194, 250, 0.19);
  border-radius: 50%;
  animation: ringSpin 26s linear infinite;
}

.mascot-ring::after {
  inset: 82px;
  border-style: solid;
  border-color: rgba(255, 255, 255, 0.08);
  animation-direction: reverse;
}

.mascot-ring i {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--cyan);
}

.mascot-ring i:first-child { top: 24px; left: 90px; }
.mascot-ring i:nth-child(2) { right: 21px; bottom: 110px; }
.mascot-ring i:nth-child(3) { bottom: 20px; left: 124px; }

@keyframes ringSpin {
  to { transform: rotate(360deg); }
}

.hero-mascot {
  position: absolute;
  z-index: 2;
  top: 130px;
  left: 50%;
  width: 200px;
  height: 200px;
  object-fit: contain;
  filter: drop-shadow(0 24px 28px rgba(0, 0, 0, 0.32));
  transform: translate(calc(-50% + var(--art-x)), var(--art-y));
  transition: transform 220ms ease-out;
}

.reply-card {
  position: absolute;
  z-index: 3;
  width: 176px;
  min-height: 98px;
  padding: 14px 15px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 10px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.27);
  backdrop-filter: blur(12px);
  animation: cardFloat 4.5s ease-in-out infinite;
}

.reply-card > span {
  padding: 2px 5px;
  color: var(--blue);
  background: #e8f2ff;
  border-radius: 3px;
  font-size: 7px;
}

.reply-card b {
  margin: 8px 0 2px;
  display: block;
  font-size: 12px;
}

.reply-card p {
  margin: 0;
  color: #7d8997;
  font-size: 8px;
}

.reply-card > i {
  position: absolute;
  top: 14px;
  right: 13px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--green);
  border-radius: 50%;
  font-size: 9px;
  font-style: normal;
}

.reply-one {
  top: 39px;
  left: 0;
}

.reply-two {
  top: 220px;
  right: -7px;
  animation-delay: -1.5s;
}

.reply-two > i {
  background: var(--blue);
}

.reply-three {
  bottom: 30px;
  left: 20px;
  animation-delay: -2.6s;
}

.reply-three > i {
  color: var(--green);
  background: #e8f8f1;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero-status {
  position: absolute;
  z-index: 3;
  right: 31px;
  bottom: 24px;
  min-width: 190px;
  padding: 12px 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(25, 33, 41, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
}

.hero-status > i {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(32, 185, 122, 0.12);
}

.hero-status > span {
  display: grid;
  line-height: 1.3;
}

.hero-status b {
  font-size: 9px;
}

.hero-status small {
  color: #7f8e9c;
  font-size: 7px;
}

.hero-chevron {
  position: absolute;
  z-index: 3;
  bottom: 20px;
  left: 50%;
  width: 36px;
  height: 46px;
  transform: translateX(-50%);
}

.hero-chevron i {
  position: absolute;
  left: 8px;
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(88, 174, 236, 0.75);
  border-bottom: 2px solid rgba(88, 174, 236, 0.75);
  transform: rotate(45deg);
  animation: chevronMove 1.8s ease-in-out infinite;
}

.hero-chevron i:nth-child(2) { top: 8px; animation-delay: 0.18s; }
.hero-chevron i:nth-child(3) { top: 16px; animation-delay: 0.36s; }

@keyframes chevronMove {
  0%, 100% { opacity: 0.15; transform: translateY(-4px) rotate(45deg); }
  50% { opacity: 1; transform: translateY(4px) rotate(45deg); }
}

.section-title {
  max-width: 750px;
  margin-bottom: 56px;
}

.section-title.center {
  margin-inline: auto;
  text-align: center;
}

.section-title > p,
.preview-heading > div > p,
.scene-heading > p,
.safety-copy > p,
.banner-content > div > p {
  margin-bottom: 17px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.section-title h2,
.preview-heading h2,
.scene-heading h2,
.safety-copy h2,
.banner-content h2 {
  margin-bottom: 20px;
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.section-title > span,
.scene-heading > span,
.safety-copy > span,
.banner-content > div > span {
  display: block;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.advantages {
  padding: 124px 0;
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid #cbd6e1;
  border-bottom: 1px solid #cbd6e1;
}

.advantage-card {
  position: relative;
  min-height: 430px;
  padding: 36px 32px 30px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid #cbd6e1;
  transition: background 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.advantage-card:first-child {
  border-left: 1px solid #cbd6e1;
}

.advantage-card:hover {
  z-index: 2;
  background: #f7faff;
  box-shadow: 0 20px 44px rgba(31, 68, 111, 0.1);
  transform: translateY(-5px);
}

.advantage-card.featured {
  background: #f4f8fd;
}

.advantage-icon {
  width: 114px;
  height: 114px;
  margin-bottom: 22px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.advantage-icon img {
  width: 112px;
  height: 112px;
  object-fit: contain;
}

.advantage-card > span {
  position: absolute;
  top: 37px;
  right: 30px;
  color: #9aa8b7;
  font-size: 10px;
  font-weight: 800;
}

.advantage-card h3 {
  margin-bottom: 14px;
  font-size: 23px;
}

.advantage-card p {
  color: #69798b;
  font-size: 13px;
  line-height: 1.85;
}

.advantage-card > a {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  color: var(--blue-dark);
  font-size: 11px;
  font-weight: 750;
}

.advantage-card > a i {
  font-size: 18px;
  font-style: normal;
  transition: transform 180ms ease;
}

.advantage-card > a:hover i,
.advantage-card > a:focus-visible i {
  transform: translateX(5px);
}

.preview-section {
  padding: 118px 0;
  background: #f3f5f8;
  overflow: hidden;
}

.preview-heading {
  margin-bottom: 48px;
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  align-items: end;
  gap: 70px;
}

.preview-heading h2 {
  margin-bottom: 0;
}

.preview-heading > p {
  margin: 0 0 6px;
  color: #69798b;
  font-size: 13px;
  line-height: 1.9;
}

.preview-frame {
  padding: 12px;
  overflow: hidden;
  background: #e7edf4;
  border: 1px solid #c8d4e1;
  border-top: 4px solid var(--blue);
  border-radius: 12px;
  box-shadow: 0 30px 70px rgba(27, 53, 84, 0.18);
}

.preview-toolbar {
  height: 42px;
  padding: 0 7px;
  display: grid;
  grid-template-columns: 100px 1fr 100px;
  align-items: center;
}

.preview-toolbar > div {
  display: flex;
  gap: 6px;
}

.preview-toolbar i {
  width: 9px;
  height: 9px;
  background: #a9b6c5;
  border-radius: 50%;
}

.preview-toolbar i:first-child { background: #ff6f6f; }
.preview-toolbar i:nth-child(2) { background: #ffc24e; }
.preview-toolbar i:nth-child(3) { background: #36c681; }

.preview-toolbar > span {
  justify-self: center;
  color: #657587;
  font-size: 9px;
}

.preview-toolbar > b {
  justify-self: end;
  color: #8996a5;
  font-size: 9px;
  font-weight: 500;
}

.preview-image-wrap {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid #d8e1eb;
  border-radius: 7px;
}

.preview-image-wrap > img {
  width: 100%;
  height: auto;
}

.preview-hotspot {
  position: absolute;
  z-index: 3;
  padding: 7px 9px;
  display: flex;
  align-items: center;
  gap: 7px;
  color: #fff;
  background: rgba(42, 99, 173, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  box-shadow: 0 8px 18px rgba(22, 60, 109, 0.26);
  cursor: pointer;
  font-size: 9px;
  transition: background 180ms ease, transform 180ms ease;
}

.preview-hotspot::after {
  content: "";
  position: absolute;
  inset: -6px;
  border: 1px solid rgba(54, 107, 179, 0.35);
  border-radius: 9px;
  animation: hotspotPulse 2s ease-in-out infinite;
}

.preview-hotspot span {
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: #fff;
  border-radius: 50%;
  font-size: 7px;
}

.preview-hotspot:hover,
.preview-hotspot:focus-visible,
.preview-hotspot.active {
  background: var(--blue-dark);
  transform: translateY(-3px);
}

.hotspot-search { top: 20%; left: 46%; }
.hotspot-library { top: 49%; left: 12%; }
.hotspot-action { right: 9%; bottom: 19%; }

@keyframes hotspotPulse {
  0%, 100% { opacity: 0.2; transform: scale(0.94); }
  50% { opacity: 0.8; transform: scale(1.04); }
}

.preview-caption {
  min-height: 54px;
  padding: 12px 9px 3px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}

.preview-caption > span {
  color: #465b73;
  font-size: 10px;
  font-weight: 700;
}

.preview-caption small {
  color: #8795a5;
  font-size: 8px;
}

.features {
  padding: 124px 0;
}

.feature-filter {
  margin-bottom: 35px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.feature-filter button {
  min-height: 40px;
  padding: 0 16px;
  color: #617286;
  background: #fff;
  border: 1px solid #ccd7e3;
  border-radius: 6px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease;
}

.feature-filter button:hover,
.feature-filter button:focus-visible,
.feature-filter button.active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid #cbd6e1;
  border-left: 1px solid #cbd6e1;
}

.feature-item {
  position: relative;
  min-height: 235px;
  padding: 29px 25px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-right: 1px solid #cbd6e1;
  border-bottom: 1px solid #cbd6e1;
  transition: background 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.feature-item::before {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  left: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 200ms ease;
}

.feature-item:hover {
  z-index: 2;
  background: #f8fbff;
  box-shadow: 0 17px 35px rgba(30, 67, 109, 0.11);
  transform: translateY(-4px);
}

.feature-item:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.feature-item[hidden] {
  display: none;
}

.feature-symbol {
  width: 58px;
  height: 58px;
  margin-bottom: 24px;
  display: grid;
  place-items: center;
  color: var(--blue);
  background: #eaf3ff;
  border: 1px solid #d1e3f8;
  border-radius: 12px;
  font-size: 20px;
  font-weight: 800;
  transition: color 200ms ease, background 200ms ease, transform 200ms ease;
}

.feature-item:hover .feature-symbol {
  color: #fff;
  background: var(--blue);
  transform: rotate(-4deg) scale(1.04);
}

.feature-item h3 {
  margin-bottom: 10px;
  font-size: 17px;
}

.feature-item p {
  margin: 0;
  color: #718095;
  font-size: 11px;
  line-height: 1.8;
}

.feature-empty {
  padding: 40px;
  color: #758598;
  background: #f6f8fb;
  border: 1px dashed #c8d4e1;
  text-align: center;
}

.scenes {
  padding: 122px 0;
  color: #fff;
  background: #242c33;
}

.scene-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 85px;
}

.scene-heading {
  align-self: start;
  position: sticky;
  top: 105px;
}

.scene-heading > p,
.safety-copy > p,
.banner-content > div > p {
  color: #70c7ff;
}

.scene-heading > span,
.safety-copy > span,
.banner-content > div > span {
  color: #9eacb9;
}

.scene-list {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.scene-list article {
  min-height: 175px;
  padding: 27px 4px;
  display: grid;
  grid-template-columns: 45px 1fr 85px;
  align-items: center;
  gap: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  transition: padding 200ms ease, background 200ms ease;
}

.scene-list article:hover {
  padding-inline: 18px;
  background: rgba(255, 255, 255, 0.035);
}

.scene-list article > b {
  color: #67c2ff;
  font-size: 10px;
}

.scene-list h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.scene-list p {
  margin: 0;
  color: #9eacb9;
  font-size: 12px;
  line-height: 1.8;
}

.scene-list article > span {
  justify-self: end;
  color: #6f7d8a;
  font-size: 9px;
  letter-spacing: 0.16em;
}

.guide {
  padding: 124px 0;
}

.guide-steps {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 1px solid #c8d4e1;
}

.guide-steps li {
  position: relative;
  min-height: 330px;
  padding: 31px 27px;
  border-right: 1px solid #c8d4e1;
}

.guide-steps li:first-child {
  border-left: 1px solid #c8d4e1;
}

.guide-steps li > span {
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
}

.step-icon {
  width: 58px;
  height: 58px;
  margin: 53px 0 29px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 9px;
  box-shadow: 0 10px 24px rgba(54, 107, 179, 0.2);
  font-size: 22px;
}

.guide-steps h3 {
  margin-bottom: 11px;
  font-size: 18px;
}

.guide-steps p {
  margin: 0;
  color: #6e7e91;
  font-size: 11px;
  line-height: 1.8;
}

.safety {
  padding: 122px 0;
  background: #edf3f8;
}

.safety-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 85px;
}

.safety-copy > a {
  min-height: 46px;
  margin-top: 32px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 24px;
  color: #fff;
  background: var(--blue);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
}

.safety-copy > a i {
  font-size: 17px;
  font-style: normal;
  transition: transform 180ms ease;
}

.safety-copy > a:hover i,
.safety-copy > a:focus-visible i {
  transform: translateX(5px);
}

.safety-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid #bac8d6;
  border-left: 1px solid #bac8d6;
}

.safety-cards article {
  min-height: 230px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.42);
  border-right: 1px solid #bac8d6;
  border-bottom: 1px solid #bac8d6;
  transition: background 180ms ease;
}

.safety-cards article:hover {
  background: #fff;
}

.safety-cards article > span {
  color: var(--blue);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.safety-cards h3 {
  margin: 42px 0 11px;
  font-size: 17px;
}

.safety-cards p {
  margin: 0;
  color: #68798c;
  font-size: 11px;
  line-height: 1.85;
}

.faq {
  padding: 124px 0;
}

.faq-list {
  border-top: 1px solid #bdcad8;
}

.faq-list details {
  border-bottom: 1px solid #ccd6e1;
}

.faq-list summary {
  min-height: 82px;
  padding: 17px 3px;
  display: grid;
  grid-template-columns: 60px 1fr 28px;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary > span {
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
}

.faq-list summary b {
  font-size: 15px;
}

.faq-list summary > i {
  position: relative;
  width: 25px;
  height: 25px;
  border: 1px solid #afbdcc;
  border-radius: 50%;
}

.faq-list summary > i::before,
.faq-list summary > i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1px;
  background: #52667d;
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.faq-list summary > i::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-list details[open] summary > i::after {
  transform: translate(-50%, -50%);
}

.faq-list details > p {
  max-width: 850px;
  margin: -4px 35px 28px 63px;
  color: #64758a;
  font-size: 12px;
  line-height: 1.9;
}

.download-banner {
  position: relative;
  padding: 92px 0;
  color: #fff;
  background: linear-gradient(135deg, #2a333b, #1f272e);
  overflow: hidden;
}

.banner-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 370px;
  align-items: center;
  gap: 70px;
}

.banner-content h2 {
  margin-bottom: 15px;
}

.banner-download {
  position: relative;
  min-height: 105px;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 34px 1fr 28px;
  align-items: center;
  column-gap: 15px;
  color: var(--ink);
  background: #fff;
  border-radius: 9px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
  overflow: hidden;
  transition: transform 190ms ease, box-shadow 190ms ease;
}

.banner-download:hover,
.banner-download:focus-visible {
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.35);
  transform: translateY(-4px);
}

.banner-download .windows-icon {
  width: 31px;
  height: 31px;
  color: var(--blue);
}

.banner-download > span:nth-child(2) {
  display: grid;
  line-height: 1.25;
}

.banner-download b {
  font-size: 16px;
}

.banner-download small {
  margin-top: 5px;
  color: #758498;
  font-size: 8px;
}

.banner-download strong {
  color: var(--blue);
  font-size: 24px;
  font-weight: 400;
}

.site-footer {
  padding: 52px 0 23px;
}

.footer-top {
  display: grid;
  grid-template-columns: auto 1fr minmax(270px, 0.68fr);
  align-items: center;
  gap: 45px;
}

.footer-top nav {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-top nav a {
  color: #657589;
  font-size: 10px;
}

.footer-top nav a:hover,
.footer-top nav a:focus-visible {
  color: var(--blue);
}

.footer-top > p {
  margin: 0;
  color: #8390a0;
  font-size: 8px;
  line-height: 1.7;
}

.filing-bar {
  margin-top: 32px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  color: #a6b1bd;
  background: #2b333b;
  border-radius: 8px;
  font-size: 9px;
}

.filing-bar a {
  color: #bdc7d2;
  text-decoration: underline;
  text-decoration-color: rgba(189, 199, 210, 0.35);
  text-underline-offset: 3px;
}

.filing-bar a:hover,
.filing-bar a:focus-visible {
  color: #fff;
  text-decoration-color: #fff;
}

.filing-bar i {
  color: #667382;
  font-style: normal;
}

.compliance-note {
  margin-top: 13px;
  color: #798797;
  font-size: 8px;
  text-align: center;
}

.footer-bottom {
  margin-top: 16px;
  padding-top: 17px;
  display: flex;
  justify-content: space-between;
  color: #939eaa;
  border-top: 1px solid #e0e6ed;
  font-size: 8px;
}

.mobile-download {
  display: none;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 680ms cubic-bezier(0.2, 0.72, 0.2, 1), transform 680ms cubic-bezier(0.2, 0.72, 0.2, 1);
}

.motion-ready .reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  :root {
    --shell: min(100% - 40px, 980px);
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a {
    font-size: 12px;
  }

  .header-download {
    padding-inline: 13px;
  }

  .hero-shell {
    gap: 36px;
  }

  .hero h1 {
    font-size: clamp(52px, 5.8vw, 68px);
  }

  .reply-card {
    width: 160px;
  }

  .advantage-card {
    padding-inline: 26px;
  }

  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-top {
    grid-template-columns: auto 1fr;
  }

  .footer-top > p {
    grid-column: 1 / -1;
  }
}

@media (max-width: 940px) {
  :root {
    --shell: min(100% - 36px, 780px);
  }

  .header-shell {
    height: 70px;
  }

  .site-header.is-scrolled .header-shell {
    height: 64px;
  }

  .site-nav {
    position: fixed;
    inset: 70px 0 auto;
    height: calc(100dvh - 70px);
    margin: 0;
    padding: 26px 18px 115px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(250, 252, 255, 0.98);
    border-top: 1px solid #d6e0ea;
    transform: translateX(105%);
    visibility: hidden;
    pointer-events: none;
    transition: transform 250ms cubic-bezier(0.2, 0.72, 0.2, 1), visibility 0s linear 250ms;
    overflow-y: auto;
    backdrop-filter: blur(15px);
  }

  .site-nav.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .site-nav a {
    padding: 17px 8px;
    border-bottom: 1px solid #dbe4ed;
    font-size: 16px;
  }

  .site-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .header-download {
    margin-left: auto;
  }

  .hero {
    min-height: 0;
    padding-top: 128px;
  }

  .hero-shell {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .hero-copy {
    max-width: 700px;
  }

  .hero-art {
    width: min(100%, 620px);
    margin-inline: auto;
  }

  .advantages,
  .preview-section,
  .features,
  .scenes,
  .guide,
  .safety,
  .faq {
    padding-block: 100px;
  }

  .preview-heading {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .scene-layout,
  .safety-layout {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .scene-heading {
    position: static;
  }

  .guide-steps {
    grid-template-columns: 1fr 1fr;
  }

  .guide-steps li:nth-child(3) {
    border-left: 1px solid #c8d4e1;
  }

  .banner-content {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .banner-download {
    max-width: 430px;
  }
}

@media (max-width: 680px) {
  :root {
    --shell: calc(100% - 28px);
  }

  html {
    scroll-padding-top: 76px;
  }

  body {
    padding-bottom: 70px;
  }

  .brand b {
    font-size: 17px;
  }

  .brand small {
    display: none;
  }

  .header-download {
    display: none;
  }

  .hero {
    padding: 110px 0 70px;
  }

  .hero-kicker {
    align-items: flex-start;
    font-size: 9px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: clamp(47px, 15vw, 62px);
  }

  .hero-slogan {
    font-size: 16px;
  }

  .hero-lead {
    font-size: 14px;
    line-height: 1.85;
  }

  .hero-badges {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-badges span {
    width: fit-content;
  }

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

  .download-primary {
    width: 100%;
    min-width: 0;
  }

  .learn-more {
    align-self: flex-start;
  }

  .platforms {
    margin-top: 28px;
  }

  .platforms small {
    flex-basis: 100%;
  }

  .hero-art {
    height: 430px;
  }

  .mascot-ring {
    top: 53px;
    width: 280px;
    height: 280px;
  }

  .hero-mascot {
    top: 105px;
    width: 170px;
    height: 170px;
  }

  .reply-card {
    width: 143px;
    min-height: 85px;
    padding: 11px;
  }

  .reply-one {
    top: 15px;
    left: -4px;
  }

  .reply-two {
    top: 194px;
    right: -5px;
  }

  .reply-three {
    bottom: 1px;
    left: 7px;
  }

  .hero-status {
    right: 3px;
    bottom: -2px;
    min-width: 160px;
  }

  .hero-chevron {
    display: none;
  }

  .advantages,
  .preview-section,
  .features,
  .scenes,
  .guide,
  .safety,
  .faq {
    padding-block: 84px;
  }

  .section-title {
    margin-bottom: 42px;
  }

  .section-title h2,
  .preview-heading h2,
  .scene-heading h2,
  .safety-copy h2,
  .banner-content h2 {
    font-size: 35px;
  }

  .section-title > span,
  .scene-heading > span,
  .safety-copy > span,
  .banner-content > div > span {
    font-size: 13px;
  }

  .advantage-grid {
    grid-template-columns: 1fr;
    border-bottom: 0;
  }

  .advantage-card,
  .advantage-card:first-child {
    min-height: 360px;
    border-left: 1px solid #cbd6e1;
    border-bottom: 1px solid #cbd6e1;
  }

  .preview-frame {
    padding: 7px;
    border-radius: 9px;
  }

  .preview-toolbar {
    height: 35px;
    grid-template-columns: 52px 1fr 52px;
  }

  .preview-toolbar > b {
    display: none;
  }

  .preview-hotspot {
    padding: 5px;
  }

  .preview-hotspot b {
    display: none;
  }

  .hotspot-search { top: 18%; left: 44%; }
  .hotspot-library { top: 47%; left: 9%; }
  .hotspot-action { right: 7%; bottom: 17%; }

  .preview-caption {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
  }

  .feature-filter {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .feature-filter button:first-child {
    grid-column: 1 / -1;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-item {
    min-height: 210px;
  }

  .scene-list article {
    min-height: 190px;
    grid-template-columns: 32px 1fr;
  }

  .scene-list article > span {
    display: none;
  }

  .guide-steps {
    grid-template-columns: 1fr;
  }

  .guide-steps li,
  .guide-steps li:nth-child(3) {
    min-height: 270px;
    border-left: 1px solid #c8d4e1;
    border-bottom: 1px solid #c8d4e1;
  }

  .step-icon {
    margin-top: 36px;
  }

  .safety-cards {
    grid-template-columns: 1fr;
  }

  .safety-cards article {
    min-height: 195px;
  }

  .safety-cards h3 {
    margin-top: 28px;
  }

  .faq-list summary {
    grid-template-columns: 37px 1fr 26px;
    gap: 6px;
  }

  .faq-list summary b {
    font-size: 13px;
  }

  .faq-list details > p {
    margin: -2px 5px 26px 43px;
    font-size: 11px;
  }

  .download-banner {
    padding: 76px 0;
  }

  .banner-download {
    width: 100%;
    min-height: 96px;
  }

  .site-footer {
    padding-top: 43px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-top nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .footer-top > p {
    grid-column: auto;
    font-size: 9px;
  }

  .filing-bar {
    padding: 14px;
    align-items: center;
    flex-direction: column;
    gap: 5px;
    text-align: center;
  }

  .filing-bar i {
    display: none;
  }

  .compliance-note {
    padding-inline: 7px;
    font-size: 9px;
    line-height: 1.7;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-download {
    position: fixed;
    z-index: 900;
    right: 12px;
    bottom: max(10px, env(safe-area-inset-bottom));
    left: 12px;
    min-height: 54px;
    padding: 0 17px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    background: rgba(54, 107, 179, 0.97);
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: 9px;
    box-shadow: 0 14px 30px rgba(23, 64, 117, 0.3);
    backdrop-filter: blur(14px);
  }

  .mobile-download > span:last-child {
    margin-left: auto;
  }

  .mobile-download b {
    font-size: 14px;
  }
}

@media (max-width: 370px) {
  .hero h1 {
    font-size: 44px;
  }

  .reply-card {
    width: 132px;
  }

  .reply-card p {
    font-size: 7px;
  }

  .hero-status {
    min-width: 147px;
    padding-inline: 10px;
  }

  .feature-filter button {
    padding-inline: 8px;
  }
}

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

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

  .motion-ready .reveal {
    opacity: 1;
    transform: none;
  }
}