:root {
  color-scheme: dark;
  --bg: #08090d;
  --bg-soft: #0d0f15;
  --surface: #11131a;
  --surface-2: #151821;
  --text: #f7f8fb;
  --muted: #a4a8b5;
  --muted-2: #737887;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.15);
  --blue: #4085ff;
  --violet: #7965ff;
  --magenta: #e02e87;
  --green: #54d99c;
  --radius: 28px;
  --wrap: 1480px;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.46);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 78% 8%, rgba(55, 100, 255, 0.09), transparent 31rem),
    radial-gradient(circle at 18% 42%, rgba(222, 42, 133, 0.045), transparent 28rem),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

:lang(zh) body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

button,
select {
  font: inherit;
}

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

:focus-visible {
  outline: 2px solid #8bb5ff;
  outline-offset: 4px;
}

.wrap {
  width: min(var(--wrap), calc(100% - 96px));
  margin-inline: auto;
}

.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;
  inset: 12px auto auto 12px;
  z-index: 1000;
  padding: 10px 15px;
  color: #08090d;
  background: #fff;
  border-radius: 10px;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  padding-inline: max(48px, calc((100vw - var(--wrap)) / 2));
  background: rgba(8, 9, 13, 0.78);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(22px) saturate(135%);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  font-size: 20px;
  font-weight: 720;
  letter-spacing: -0.035em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  box-shadow: 0 8px 24px rgba(20, 31, 80, 0.42);
}

#site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

#site-nav a {
  position: relative;
  color: #aaaeba;
  font-size: 14px;
  font-weight: 560;
  transition: color 160ms ease;
}

#site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--blue), var(--magenta));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

#site-nav a:hover,
#site-nav a[aria-current="page"] {
  color: #fff;
}

#site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  justify-self: end;
  align-items: center;
  gap: 12px;
}

.language {
  position: relative;
  display: flex;
  align-items: center;
}

.language::after {
  position: absolute;
  right: 13px;
  color: var(--muted-2);
  font-size: 10px;
  content: "⌄";
  pointer-events: none;
}

.language select {
  min-width: 112px;
  height: 40px;
  padding: 0 30px 0 13px;
  color: #d7d9e0;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line);
  border-radius: 12px;
  appearance: none;
  cursor: pointer;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 180ms ease;
}

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

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  color: #07080b;
  background: #f6f7fb;
  border: 1px solid #fff;
  border-radius: 15px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.26);
  font-size: 15px;
  font-weight: 720;
  line-height: 1.2;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  background: #fff;
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.38);
  transform: translateY(-2px);
}

.button-small {
  min-height: 40px;
  padding-inline: 17px;
  border-radius: 12px;
  font-size: 13px;
}

.button-secondary {
  color: #e5e7ee;
  background: rgba(255, 255, 255, 0.045);
  border-color: var(--line-strong);
  box-shadow: none;
}

.button-secondary:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}

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

.eyebrow {
  margin: 0;
  color: #9bbdff;
  font-size: 12px;
  font-weight: 720;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #dce6ff;
  font-weight: 650;
}

.text-link span {
  color: #88adff;
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

/* Home */
.hero-shell {
  position: relative;
  overflow: clip;
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
}

.hero-shell::before {
  position: absolute;
  top: -34%;
  left: 55%;
  width: 54rem;
  height: 54rem;
  content: "";
  background: radial-gradient(circle, rgba(49, 111, 255, 0.11), transparent 68%);
  pointer-events: none;
}

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: center;
  gap: clamp(42px, 5vw, 78px);
  min-height: min(790px, calc(100svh - 72px));
  padding-block: 78px 74px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  min-width: 0;
  max-width: 620px;
}

.announcement {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  margin-bottom: 34px;
  padding: 0 13px;
  color: #c5c9d5;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.announcement > span {
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(84, 217, 156, 0.78);
}

.announcement b {
  color: #91b5ff;
  font-size: 14px;
}

.hero h1 {
  max-width: 650px;
  margin: 16px 0 25px;
  font-size: clamp(52px, 3.8vw, 68px);
  font-weight: 760;
  letter-spacing: -0.05em;
  line-height: 1.02;
  text-wrap: balance;
}

.hero-intro {
  max-width: 570px;
  margin: 0 0 32px;
  color: #b1b4bf;
  font-size: clamp(17px, 1.2vw, 19px);
  line-height: 1.65;
}

.mini-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 19px;
  margin-top: 27px;
  color: #888d9b;
  font-size: 12px;
  font-weight: 590;
}

.mini-proof span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.mini-proof span::before {
  width: 4px;
  height: 4px;
  content: "";
  background: #5f93ff;
  border-radius: 50%;
}

.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  min-height: 520px;
}

.hero-aura {
  position: absolute;
  inset: 4% -8% -8% 6%;
  background:
    radial-gradient(circle at 62% 43%, rgba(47, 120, 255, 0.26), transparent 34%),
    radial-gradient(circle at 48% 70%, rgba(218, 41, 136, 0.18), transparent 40%);
  filter: blur(28px);
  opacity: 0.92;
  pointer-events: none;
}

.product-window {
  position: relative;
  z-index: 1;
  width: 100%;
  margin: 0;
  overflow: hidden;
  background: #0b0c10;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 22px;
  box-shadow:
    0 42px 100px rgba(0, 0, 0, 0.58),
    0 0 0 1px rgba(79, 125, 255, 0.05) inset;
}

.window-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 49px;
  padding: 0 16px;
  color: #696e7c;
  background: #101116;
  border-bottom: 1px solid rgba(255, 255, 255, 0.075);
  font-size: 11px;
}

.window-chrome > span {
  width: 10px;
  height: 10px;
  background: #343640;
  border-radius: 50%;
}

.window-chrome b {
  position: absolute;
  left: 50%;
  color: #777b88;
  font-size: 11px;
  font-weight: 620;
  transform: translateX(-50%);
}

.window-chrome em {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  padding: 4px 9px;
  color: #69d8a4;
  background: rgba(84, 217, 156, 0.07);
  border: 1px solid rgba(84, 217, 156, 0.22);
  border-radius: 999px;
  font-style: normal;
  font-weight: 650;
}

.window-chrome em i {
  width: 5px;
  height: 5px;
  background: currentColor;
  border-radius: 50%;
}

.product-window > img {
  width: 100%;
  height: auto;
  aspect-ratio: 1280 / 502;
  object-fit: contain;
}

.hero-caption {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 10px;
  align-self: flex-end;
  max-width: 420px;
  margin: 19px 18px 0 0;
  color: #9499a7;
  font-size: 12px;
}

.hero-caption i {
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--magenta));
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: 84px;
  border-bottom: 1px solid var(--line);
}

.trust-strip > span {
  display: flex;
  align-items: center;
  gap: 11px;
  padding-inline: 24px;
  color: #a9adba;
  border-left: 1px solid var(--line);
  font-size: 13px;
  font-weight: 620;
}

.trust-strip > span:first-child {
  padding-left: 0;
  border-left: 0;
}

.trust-strip i {
  width: 6px;
  height: 6px;
  background: linear-gradient(135deg, var(--blue), var(--magenta));
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(69, 128, 255, 0.55);
}

.experience-intro {
  display: grid;
  grid-template-columns: 0.48fr 1.52fr;
  gap: 56px;
  padding-block: 152px 80px;
}

.experience-intro > div {
  max-width: 900px;
}

.experience-intro h2,
.character-story h2,
.privacy-banner h2,
.closing h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 62px);
  font-weight: 720;
  letter-spacing: -0.052em;
  line-height: 1.04;
  text-wrap: balance;
}

.experience-intro > div > p {
  max-width: 690px;
  margin: 25px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.story-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 22px;
  padding-bottom: 142px;
}

.story-card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.035), transparent 48%),
    #0e1016;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.22);
}

.story-card::after {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: inherit;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.045) inset;
  pointer-events: none;
}

.story-library {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 0.42fr 1fr;
  min-height: 500px;
}

.story-copy {
  position: relative;
  z-index: 2;
  padding: 50px;
}

.story-number,
.section-index {
  color: #666c7b;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.story-copy h3 {
  max-width: 470px;
  margin: 52px 0 17px;
  font-size: clamp(28px, 2.6vw, 43px);
  font-weight: 690;
  letter-spacing: -0.045em;
  line-height: 1.08;
  text-wrap: balance;
}

.story-copy p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.story-media {
  position: relative;
  min-height: 300px;
  overflow: hidden;
  background: #090a0d;
}

.story-media::before {
  position: absolute;
  z-index: 2;
  inset: 0;
  content: "";
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.055) inset;
  pointer-events: none;
}

.story-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.story-card:hover .story-media img {
  transform: scale(1.015);
}

.story-library .story-media {
  margin: 34px 34px 34px 0;
  border: 1px solid var(--line);
  border-radius: 17px;
  box-shadow: 0 25px 65px rgba(0, 0, 0, 0.4);
}

.story-library .story-media img {
  object-position: center;
}

.story-chat,
.story-model {
  display: flex;
  flex-direction: column;
  min-height: 690px;
}

.story-chat .story-copy,
.story-model .story-copy {
  min-height: 310px;
}

.story-chat .story-media,
.story-model .story-media {
  flex: 1;
  margin: 0 22px 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.story-chat .story-media img {
  object-position: 44% top;
}

.story-model .story-media img {
  object-position: center 8%;
}

.character-story {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: clamp(54px, 7vw, 110px);
  padding-block: 132px;
  border-top: 1px solid var(--line);
}

.character-collage {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  min-width: 0;
}

.character-collage figure {
  position: relative;
  margin: 0 -11px;
  overflow: hidden;
  aspect-ratio: 0.72;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 22px;
  box-shadow: 0 24px 58px rgba(0, 0, 0, 0.42);
}

.character-collage figure:nth-child(1) {
  transform: rotate(-5deg) translateY(20px);
}

.character-collage figure:nth-child(2) {
  z-index: 2;
  transform: rotate(-1.5deg) translateY(-20px);
}

.character-collage figure:nth-child(3) {
  z-index: 3;
  transform: rotate(2.5deg) translateY(13px);
}

.character-collage figure:nth-child(4) {
  transform: rotate(6deg) translateY(-10px);
}

.character-collage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.character-collage figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 30px 17px 15px;
  background: linear-gradient(transparent, rgba(3, 4, 7, 0.92));
  font-size: 13px;
  font-weight: 680;
}

.character-copy {
  max-width: 540px;
}

.character-copy h2 {
  margin-top: 22px;
}

.character-copy > p:not(.eyebrow) {
  margin: 24px 0 28px;
  color: var(--muted);
  font-size: 17px;
}

.privacy-banner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 38px;
  margin-bottom: 132px;
  padding: 54px 58px;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 50%, rgba(69, 117, 255, 0.15), transparent 25rem),
    linear-gradient(135deg, #11141d, #0d0f15);
  border: 1px solid var(--line-strong);
  border-radius: 30px;
}

.privacy-orb {
  display: grid;
  width: 92px;
  height: 92px;
  place-items: center;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: 0 20px 54px rgba(0, 0, 0, 0.34);
}

.privacy-orb img {
  width: 67px;
  height: 67px;
  border-radius: 18px;
}

.privacy-banner h2 {
  max-width: 780px;
  margin-top: 13px;
  font-size: clamp(32px, 3.1vw, 49px);
}

.privacy-banner div > p:last-child {
  max-width: 790px;
  margin: 17px 0 0;
  color: var(--muted);
}

.closing {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: 132px 150px;
  text-align: center;
  border-top: 1px solid var(--line);
}

.closing > img {
  width: 72px;
  height: 72px;
  margin-bottom: 28px;
  border-radius: 20px;
  box-shadow: 0 0 64px rgba(70, 103, 255, 0.25);
}

.closing p {
  max-width: 580px;
  margin: 21px 0 30px;
  color: var(--muted);
  font-size: 18px;
}

/* Inner pages */
.page-hero {
  padding-block: 138px 105px;
  border-bottom: 1px solid var(--line);
}

.page-hero .eyebrow,
.download-hero .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-hero .eyebrow span,
.download-hero .eyebrow span {
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--magenta));
}

.page-hero h1,
.download-hero h1 {
  max-width: 1050px;
  margin: 23px 0 25px;
  font-size: clamp(52px, 6.2vw, 92px);
  font-weight: 735;
  letter-spacing: -0.064em;
  line-height: 0.98;
  text-wrap: balance;
}

.page-hero > p:last-child,
.download-hero > div > p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 19px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-block: 92px 132px;
}

.deep-card {
  display: flex;
  flex-direction: column;
  min-height: 390px;
  padding: 32px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.035), transparent 45%), var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
}

.deep-card > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #656a78;
  font-size: 11px;
  letter-spacing: 0.14em;
}

.deep-card em {
  padding: 5px 8px;
  color: #91b0f5;
  background: rgba(68, 121, 255, 0.08);
  border: 1px solid rgba(68, 121, 255, 0.16);
  border-radius: 8px;
  font-style: normal;
  font-weight: 700;
}

.deep-card h2 {
  margin: auto 0 16px;
  font-size: 29px;
  font-weight: 670;
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.deep-card p {
  margin: 0;
  color: var(--muted);
}

.workflow {
  padding-block: 110px 130px;
  border-top: 1px solid var(--line);
}

.workflow > .section-index,
.tips > .section-index {
  margin: 0 0 42px;
  color: #9ca1ae;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-grid article {
  min-height: 300px;
  padding: 30px 30px 36px;
  border-left: 1px solid var(--line);
}

.workflow-grid article:first-child {
  border-left: 0;
}

.workflow-grid article > span {
  color: #686d7a;
  font-size: 11px;
  font-weight: 700;
}

.workflow-grid h3 {
  margin: 112px 0 13px;
  font-size: 23px;
  letter-spacing: -0.035em;
}

.workflow-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.inline-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-block: 52px;
  border-top: 1px solid var(--line);
}

.inline-cta h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(30px, 3.5vw, 50px);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.inline-cta p {
  margin: 0;
  color: var(--muted);
}

.privacy-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-block: 90px 32px;
}

.privacy-card {
  min-height: 460px;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
}

.privacy-card.local {
  background:
    radial-gradient(circle at 90% 0%, rgba(69, 136, 255, 0.1), transparent 20rem),
    var(--surface);
}

.privacy-card > span {
  display: grid;
  width: 44px;
  height: 44px;
  color: #84adff;
  background: rgba(65, 125, 255, 0.09);
  border: 1px solid rgba(65, 125, 255, 0.18);
  border-radius: 13px;
  place-items: center;
}

.privacy-card h2 {
  margin: 76px 0 25px;
  font-size: 34px;
  letter-spacing: -0.04em;
}

.privacy-card ul,
.requirements ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.privacy-card li {
  position: relative;
  padding: 13px 0 13px 23px;
  color: #b2b5c0;
  border-top: 1px solid var(--line);
}

.privacy-card li::before {
  position: absolute;
  top: 22px;
  left: 2px;
  width: 5px;
  height: 5px;
  content: "";
  background: #668cff;
  border-radius: 50%;
}

.plain-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  margin-block: 28px 120px;
  padding: 38px 42px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: 20px;
}

.plain-note > div:first-child > span {
  display: grid;
  width: 34px;
  height: 34px;
  color: #a7bfff;
  border: 1px solid rgba(110, 146, 255, 0.28);
  border-radius: 50%;
  font-weight: 700;
  place-items: center;
}

.plain-note h2 {
  margin: 1px 0 10px;
  font-size: 23px;
  letter-spacing: -0.03em;
}

.plain-note p {
  max-width: 950px;
  margin: 0;
  color: var(--muted);
}

.comparison {
  padding-bottom: 132px;
}

.comparison > h2 {
  max-width: 700px;
  margin: 0 0 45px;
  font-size: clamp(36px, 4vw, 58px);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.compare-table {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
}

.compare-table > div {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  min-height: 72px;
  border-top: 1px solid var(--line);
}

.compare-table > div:first-child {
  border-top: 0;
}

.compare-table span,
.compare-table b,
.compare-table strong {
  display: flex;
  align-items: center;
  padding: 18px 25px;
  border-left: 1px solid var(--line);
  font-size: 14px;
}

.compare-table strong,
.compare-table > div > span:first-child {
  border-left: 0;
}

.compare-head {
  color: #dfe3ed;
  background: rgba(255, 255, 255, 0.035);
}

.compare-table > div:not(.compare-head) > span:nth-child(2) {
  color: #8dd9b4;
  background: rgba(84, 217, 156, 0.025);
}

.compare-table > div:not(.compare-head) > span:last-child {
  color: #9296a3;
}

.download-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.7fr;
  align-items: center;
  gap: clamp(70px, 10vw, 160px);
  min-height: 700px;
  padding-block: 105px;
}

.download-hero h1 {
  max-width: 850px;
}

.download-hero .button-row {
  margin-top: 32px;
}

.download-hero > div > small {
  display: block;
  max-width: 580px;
  margin-top: 18px;
  color: #747987;
}

.download-product {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 480px;
  overflow: hidden;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.055), transparent 45%), #0d0f15;
  border: 1px solid var(--line-strong);
  border-radius: 34px;
  box-shadow: var(--shadow);
  text-align: center;
}

.download-product .glow {
  position: absolute;
  inset: 8% 4% 15%;
  background:
    radial-gradient(circle at 40% 45%, rgba(43, 105, 255, 0.35), transparent 35%),
    radial-gradient(circle at 64% 58%, rgba(220, 42, 133, 0.28), transparent 42%);
  filter: blur(32px);
}

.download-product img {
  position: relative;
  width: 142px;
  height: 142px;
  margin-bottom: 22px;
  border-radius: 38px;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.54);
}

.download-product span,
.download-product small,
.download-product em {
  position: relative;
}

.download-product span {
  font-size: 29px;
  font-weight: 720;
  letter-spacing: -0.045em;
}

.download-product small {
  color: var(--muted);
  font-size: 13px;
}

.download-product em {
  margin-top: 20px;
  padding: 6px 11px;
  color: #bbc7e8;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-block: 40px 100px;
}

.requirements {
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
}

.requirements h2 {
  margin: 58px 0 30px;
  font-size: 34px;
  letter-spacing: -0.04em;
}

.requirements dl {
  margin: 0;
}

.requirements dl > div {
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 18px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}

.requirements dt {
  color: #e1e3ea;
  font-weight: 650;
}

.requirements dd {
  margin: 0;
  color: var(--muted);
}

.requirements li {
  display: flex;
  gap: 13px;
  padding: 14px 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.requirements li span {
  color: var(--green);
}

.system-note {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 120px;
  padding: 26px 30px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.system-note b {
  display: grid;
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  color: #a9bfff;
  background: rgba(75, 119, 255, 0.1);
  border-radius: 12px;
  place-items: center;
}

.system-note p {
  margin: 0;
  color: var(--muted);
}

.steps {
  padding-block: 88px 120px;
}

.step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 28px;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.step:last-child {
  border-bottom: 1px solid var(--line);
}

.step > span {
  color: #697080;
  font-size: 13px;
  font-weight: 700;
}

.step h2 {
  margin: 0 0 10px;
  font-size: 30px;
  letter-spacing: -0.04em;
}

.step p {
  max-width: 810px;
  margin: 0;
  color: var(--muted);
}

.tips {
  padding-bottom: 125px;
}

.tips > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.tips article {
  min-height: 225px;
  padding: 31px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.tips h3 {
  margin: 70px 0 10px;
  font-size: 21px;
  letter-spacing: -0.03em;
}

.tips p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.faq-list {
  padding-block: 85px 125px;
}

.faq-list details {
  border-top: 1px solid var(--line);
}

.faq-list details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: grid;
  grid-template-columns: 70px 1fr 32px;
  align-items: center;
  gap: 18px;
  min-height: 126px;
  cursor: pointer;
  list-style: none;
}

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

.faq-list summary > span {
  color: #676c79;
  font-size: 11px;
  font-weight: 700;
}

.faq-list summary h2 {
  margin: 0;
  font-size: clamp(22px, 2.3vw, 31px);
  font-weight: 620;
  letter-spacing: -0.035em;
}

.faq-list summary i {
  position: relative;
  width: 24px;
  height: 24px;
}

.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 11px;
  left: 5px;
  width: 14px;
  height: 1px;
  content: "";
  background: #a6aab6;
  transition: transform 180ms ease;
}

.faq-list summary i::after {
  transform: rotate(90deg);
}

.faq-list details[open] summary i::after {
  transform: rotate(0);
}

.faq-list details > p {
  max-width: 870px;
  margin: -12px 40px 36px 88px;
  color: var(--muted);
  font-size: 16px;
}

/* Footer */
.footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  width: min(var(--wrap), calc(100% - 96px));
  margin-inline: auto;
  padding-block: 78px 28px;
  border-top: 1px solid var(--line);
}

.footer-lead p {
  max-width: 380px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.footer-links > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-links strong {
  margin-bottom: 8px;
  color: #dddfe7;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.footer-links a {
  color: #868b99;
  font-size: 14px;
  transition: color 160ms ease;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: space-between;
  margin-top: 34px;
  padding-top: 23px;
  color: #656a77;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 680ms ease, transform 680ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

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

@media (max-width: 1180px) {
  .wrap,
  .footer {
    width: min(var(--wrap), calc(100% - 56px));
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
    gap: 12px;
    padding-inline: 28px;
  }

  .menu-toggle {
    display: block;
    grid-column: 2;
    grid-row: 1;
  }

  #site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 28px;
    left: 28px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: rgba(15, 17, 23, 0.98);
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  }

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

  #site-nav a {
    padding: 12px 13px;
    border-radius: 10px;
  }

  #site-nav a:hover,
  #site-nav a[aria-current="page"] {
    background: rgba(255, 255, 255, 0.05);
  }

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

  .header-actions {
    grid-column: 3;
    grid-row: 1;
  }

  .hero {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 38px;
  }

  .hero h1 {
    font-size: clamp(48px, 5.2vw, 62px);
  }

  .hero-visual {
    min-height: 440px;
  }

  .story-copy {
    padding: 38px;
  }

  .story-library {
    grid-template-columns: 0.5fr 1fr;
    min-height: 450px;
  }

  .story-chat,
  .story-model {
    min-height: 620px;
  }

  .character-story {
    grid-template-columns: 1.08fr 0.92fr;
  }

  .privacy-banner {
    padding: 45px;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1120px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 74px 56px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero h1 {
    max-width: 720px;
    font-size: clamp(52px, 9vw, 76px);
  }

  .hero-visual {
    min-height: 0;
    margin-top: 18px;
  }

  .hero-caption {
    margin-right: 4px;
  }

  .trust-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-strip > span {
    min-height: 68px;
    border-top: 1px solid var(--line);
  }

  .trust-strip > span:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .experience-intro {
    grid-template-columns: 1fr;
    gap: 25px;
    padding-top: 110px;
  }

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

  .story-library {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .story-library .story-media {
    min-height: 330px;
    margin: 0 22px 22px;
  }

  .story-chat,
  .story-model {
    min-height: 650px;
  }

  .story-card .story-copy {
    min-height: auto;
  }

  .story-copy h3 {
    margin-top: 40px;
  }

  .character-story {
    grid-template-columns: 1fr;
  }

  .character-copy {
    max-width: 720px;
  }

  .privacy-banner {
    grid-template-columns: auto 1fr;
  }

  .privacy-banner > .text-link {
    grid-column: 2;
  }

  .page-hero {
    padding-block: 105px 82px;
  }

  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .workflow-grid article:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .workflow-grid article:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .privacy-columns,
  .download-grid {
    grid-template-columns: 1fr;
  }

  .download-hero {
    grid-template-columns: 1fr;
    gap: 55px;
    min-height: auto;
    padding-block: 90px;
  }

  .download-product {
    min-height: 430px;
  }

  .tips > div {
    grid-template-columns: 1fr;
  }

  .tips article {
    min-height: 185px;
  }

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

@media (max-width: 640px) {
  .wrap,
  .footer {
    width: calc(100% - 40px);
  }

  .site-header {
    min-height: 64px;
    gap: 8px;
    padding-inline: 20px;
  }

  .brand {
    gap: 9px;
    font-size: 18px;
  }

  .brand img {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
  }

  #site-nav {
    right: 20px;
    left: 20px;
  }

  .header-actions {
    gap: 7px;
  }

  .header-actions .button-small {
    display: none;
  }

  .language select {
    min-width: 104px;
    height: 38px;
    padding-right: 26px;
  }

  .hero {
    padding-block: 58px 44px;
  }

  .announcement {
    max-width: 100%;
    min-height: 38px;
    margin-bottom: 28px;
    padding-block: 7px;
    border-radius: 18px;
    line-height: 1.35;
    white-space: normal;
  }

  .hero h1 {
    margin: 14px 0 21px;
    font-size: clamp(42px, 13vw, 52px);
    line-height: 1;
    letter-spacing: -0.058em;
  }

  .hero-intro {
    font-size: 16px;
    line-height: 1.6;
  }

  .hero .button-row {
    flex-direction: column;
  }

  .hero .button {
    width: 100%;
  }

  .mini-proof {
    gap: 8px 14px;
  }

  .product-window {
    border-radius: 14px;
  }

  .window-chrome {
    height: 39px;
    padding-inline: 11px;
  }

  .window-chrome > span {
    width: 7px;
    height: 7px;
  }

  .window-chrome em {
    padding: 3px 7px;
    font-size: 9px;
  }

  .window-chrome b {
    display: none;
  }

  .hero-caption {
    justify-content: flex-end;
    margin-top: 13px;
    font-size: 11px;
    text-align: right;
  }

  .trust-strip {
    width: calc(100% - 40px);
  }

  .trust-strip > span {
    min-height: 62px;
    padding-inline: 12px;
    font-size: 11px;
  }

  .experience-intro {
    gap: 20px;
    padding-block: 90px 55px;
  }

  .experience-intro h2,
  .character-story h2,
  .privacy-banner h2,
  .closing h2 {
    font-size: clamp(34px, 10.3vw, 43px);
    line-height: 1.05;
  }

  .experience-intro > div > p {
    margin-top: 18px;
    font-size: 16px;
  }

  .story-grid {
    gap: 14px;
    padding-bottom: 94px;
  }

  .story-card {
    border-radius: 21px;
  }

  .story-copy {
    padding: 29px 26px;
  }

  .story-copy h3 {
    margin: 34px 0 14px;
    font-size: 29px;
  }

  .story-copy p {
    font-size: 14px;
  }

  .story-library .story-media,
  .story-chat .story-media,
  .story-model .story-media {
    min-height: 220px;
    margin: 0 12px 12px;
    border-radius: 13px;
  }

  .story-library .story-media {
    min-height: 205px;
  }

  .story-chat,
  .story-model {
    min-height: 560px;
  }

  .story-chat .story-media {
    min-height: 325px;
  }

  .story-model .story-media {
    min-height: 340px;
  }

  .character-story {
    gap: 72px;
    padding-block: 96px;
  }

  .character-collage figure {
    margin-inline: -7px;
    border-radius: 15px;
  }

  .character-collage figcaption {
    padding: 22px 9px 9px;
    font-size: 10px;
  }

  .character-copy > p:not(.eyebrow) {
    font-size: 15px;
  }

  .privacy-banner {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-bottom: 92px;
    padding: 31px 27px;
    border-radius: 23px;
  }

  .privacy-orb {
    width: 68px;
    height: 68px;
    border-radius: 20px;
  }

  .privacy-orb img {
    width: 51px;
    height: 51px;
  }

  .privacy-banner > .text-link {
    grid-column: auto;
  }

  .closing {
    padding-block: 94px 108px;
  }

  .closing p {
    font-size: 16px;
  }

  .page-hero {
    padding-block: 80px 62px;
  }

  .page-hero h1,
  .download-hero h1 {
    margin-block: 18px;
    font-size: clamp(42px, 13vw, 58px);
    line-height: 1;
  }

  .page-hero > p:last-child,
  .download-hero > div > p {
    font-size: 16px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    padding-block: 60px 90px;
  }

  .deep-card {
    min-height: 320px;
    padding: 26px;
  }

  .deep-card h2 {
    font-size: 26px;
  }

  .workflow {
    padding-block: 80px 95px;
  }

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

  .workflow-grid article,
  .workflow-grid article:nth-child(2),
  .workflow-grid article:nth-child(3),
  .workflow-grid article:nth-child(4) {
    min-height: 225px;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .workflow-grid article:first-child {
    border-top: 0;
  }

  .workflow-grid h3 {
    margin-top: 70px;
  }

  .inline-cta {
    flex-direction: column;
    align-items: flex-start;
    padding-block: 38px;
  }

  .privacy-columns {
    padding-block: 62px 18px;
  }

  .privacy-card {
    min-height: 400px;
    padding: 28px;
  }

  .privacy-card h2 {
    margin-top: 60px;
    font-size: 29px;
  }

  .plain-note {
    grid-template-columns: 1fr;
    margin-block: 18px 90px;
    padding: 28px;
  }

  .comparison {
    padding-bottom: 90px;
  }

  .comparison > h2 {
    font-size: 36px;
  }

  .compare-table {
    overflow-x: auto;
  }

  .compare-table > div {
    min-width: 560px;
    grid-template-columns: 1.25fr 1fr 1fr;
  }

  .compare-table span,
  .compare-table b,
  .compare-table strong {
    padding: 15px;
    font-size: 12px;
  }

  .download-hero {
    gap: 45px;
    padding-block: 75px;
  }

  .download-hero .button-row {
    flex-direction: column;
  }

  .download-hero .button {
    width: 100%;
  }

  .download-product {
    min-height: 360px;
    border-radius: 27px;
  }

  .download-product img {
    width: 112px;
    height: 112px;
    border-radius: 31px;
  }

  .download-grid {
    padding-block: 20px 76px;
  }

  .requirements {
    padding: 28px;
  }

  .requirements h2 {
    margin-top: 45px;
    font-size: 29px;
  }

  .requirements dl > div {
    grid-template-columns: 92px 1fr;
    gap: 12px;
  }

  .system-note {
    align-items: flex-start;
    margin-bottom: 90px;
    padding: 22px;
  }

  .steps {
    padding-block: 60px 90px;
  }

  .step {
    grid-template-columns: 42px 1fr;
    gap: 16px;
    padding-block: 31px;
  }

  .step h2 {
    font-size: 25px;
  }

  .tips {
    padding-bottom: 90px;
  }

  .faq-list {
    padding-block: 58px 90px;
  }

  .faq-list summary {
    grid-template-columns: 34px 1fr 26px;
    gap: 8px;
    min-height: 106px;
  }

  .faq-list summary h2 {
    font-size: 21px;
    line-height: 1.22;
  }

  .faq-list details > p {
    margin: -4px 26px 30px 42px;
    font-size: 14px;
  }

  .footer {
    gap: 48px;
    padding-block: 62px 24px;
  }

  .footer-links {
    gap: 14px;
  }

  .footer-links strong {
    font-size: 10px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    margin-top: 18px;
  }
}

@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;
  }

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