:root {
  color-scheme: light;
  --coral: #ff503d;
  --coral-deep: #e83f2e;
  --coral-soft: #fff0eb;
  --blue: #2f7df4;
  --blue-soft: #eaf2ff;
  --green: #29c878;
  --green-soft: #e9f9f1;
  --ink: #1b1412;
  --muted: #706966;
  --line: #e9dfda;
  --paper: #fffaf7;
  --surface: #ffffff;
  --dark: #171311;
  --page-pad: 72px;
  --content: 1180px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  letter-spacing: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

button {
  font: inherit;
}

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

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -80px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--surface);
  background: var(--ink);
  border-radius: 6px;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 100;
  width: min(calc(100% - 32px), 1120px);
  height: var(--header-height);
  padding: 0 18px;
  display: flex;
  align-items: center;
  gap: 28px;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 8px;
  backdrop-filter: blur(22px) saturate(160%);
  box-shadow: 0 10px 34px rgba(52, 33, 24, 0.08);
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 40px rgba(52, 33, 24, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-size: 17px;
  font-weight: 800;
}

.brand img,
.footer-brand img,
.final-mark,
.coming-dialog img {
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-left: auto;
}

.site-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  transition: color 150ms ease;
}

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

.nav-cta,
.primary-button,
.secondary-button {
  border: 0;
  cursor: pointer;
  font-weight: 800;
}

.nav-cta {
  min-width: 106px;
  height: 42px;
  color: var(--surface);
  background: var(--coral);
  border-radius: 6px;
  transition: transform 120ms ease, background-color 120ms ease;
}

.nav-cta:hover {
  background: var(--coral-deep);
}

.nav-cta:active,
.primary-button:active,
.secondary-button:active {
  transform: scale(0.97);
}

.hero {
  position: relative;
  min-height: 940px;
  height: 96svh;
  max-height: 1120px;
  padding: calc(var(--header-height) + 128px) max(var(--page-pad), calc((100vw - var(--content)) / 2)) 88px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.9fr);
  align-items: center;
  gap: 48px;
  overflow: hidden;
  background: var(--paper);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--line);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--coral);
  font-size: 14px;
  line-height: 1.4;
  font-weight: 850;
}

.eyebrow-light {
  color: #ff9a89;
}

.hero h1 {
  margin: 0;
  font-size: 78px;
  line-height: 1.06;
  font-weight: 900;
}

.hero-promise {
  margin: 24px 0 0;
  font-size: 31px;
  line-height: 1.34;
  font-weight: 800;
}

.hero-support {
  max-width: 570px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  margin-top: 36px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.primary-button {
  min-width: 168px;
  height: 56px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  color: var(--surface);
  background: var(--coral);
  border-radius: 7px;
  box-shadow: 0 12px 28px rgba(255, 80, 61, 0.24);
  transition: transform 120ms ease, background-color 120ms ease, box-shadow 120ms ease;
}

.primary-button:hover {
  background: var(--coral-deep);
  box-shadow: 0 14px 34px rgba(255, 80, 61, 0.32);
}

.text-link {
  color: var(--ink);
  font-weight: 750;
  border-bottom: 1px solid var(--ink);
}

.hero-device {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.phone {
  position: relative;
  flex: 0 0 auto;
  padding: 8px;
  overflow: hidden;
  background: #11100f;
  border: 1px solid #3e3a38;
  border-radius: 48px;
  box-shadow: 0 30px 80px rgba(58, 37, 28, 0.22);
}

.phone img {
  width: 100%;
  height: 100%;
  border-radius: 40px;
  object-fit: cover;
}

.phone-speaker {
  position: absolute;
  z-index: 4;
  top: 13px;
  left: 50%;
  width: 28%;
  height: 22px;
  transform: translateX(-50%);
  background: #090909;
  border-radius: 18px;
  pointer-events: none;
}

.phone-hero {
  width: 390px;
  aspect-ratio: 1220 / 2656;
  transform: rotate(2deg);
}

.phone-medium {
  width: 350px;
  aspect-ratio: 1220 / 2656;
}

.hero-note {
  position: absolute;
  z-index: 3;
  min-height: 46px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.96);
  border-radius: 7px;
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 14px 34px rgba(42, 28, 23, 0.14);
  backdrop-filter: blur(14px);
}

.hero-note-plan {
  top: 16%;
  left: -2%;
}

.hero-note-action {
  right: -2%;
  bottom: 23%;
}

.note-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.note-dot-blue {
  background: var(--blue);
}

.note-dot-coral {
  background: var(--coral);
}

.scroll-cue {
  position: absolute;
  left: max(var(--page-pad), calc((100vw - var(--content)) / 2));
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.proof-band {
  min-height: 170px;
  padding: 42px max(var(--page-pad), calc((100vw - var(--content)) / 2));
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  color: var(--surface);
  background: var(--coral);
}

.proof-item {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 12px;
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}

.proof-item:last-child {
  border-right: 0;
}

.proof-item strong {
  font-size: 48px;
  line-height: 1;
}

.proof-item span {
  font-size: 15px;
  font-weight: 700;
}

.section {
  width: 100%;
  padding: 130px max(var(--page-pad), calc((100vw - var(--content)) / 2));
}

.section-heading {
  max-width: 760px;
}

.section-heading h2,
.plan-copy h2,
.library-copy h2,
.editor-copy h2,
.experience-intro h2,
.final-cta h2 {
  margin: 0;
  font-size: 56px;
  line-height: 1.15;
  font-weight: 900;
}

.section-heading > p:last-child,
.plan-copy > p,
.library-copy > p,
.editor-copy > p {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.decision-section {
  background: var(--surface);
}

.decision-list {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.decision-item {
  min-height: 270px;
  padding: 36px 34px 42px;
  border-right: 1px solid var(--line);
}

.decision-item:last-child {
  border-right: 0;
}

.decision-index,
.flow-number {
  color: var(--coral);
  font-size: 13px;
  font-weight: 850;
}

.decision-item h3,
.flow-step h3,
.evolution-item h3 {
  margin: 42px 0 12px;
  font-size: 26px;
  line-height: 1.25;
}

.decision-item p,
.flow-step p,
.evolution-item p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.plan-section,
.library-section,
.editor-section {
  min-height: 900px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 110px;
}

.plan-section {
  color: var(--surface);
  background: var(--blue);
}

.plan-visual,
.library-visual,
.editor-visual {
  display: flex;
  justify-content: center;
}

.plan-copy > p {
  color: rgba(255, 255, 255, 0.78);
}

.feature-points {
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 15px;
  list-style: none;
}

.feature-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 750;
}

.feature-points span {
  width: 26px;
  height: 26px;
  display: inline-grid;
  place-items: center;
  color: var(--blue);
  background: var(--surface);
  border-radius: 50%;
}

.library-section {
  background: var(--paper);
}

.library-facts {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.library-facts span {
  padding: 9px 13px;
  color: var(--coral-deep);
  background: var(--coral-soft);
  border: 1px solid #ffd8cc;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
}

.experience-section {
  min-height: 1640px;
  padding: 130px max(var(--page-pad), calc((100vw - var(--content)) / 2));
  color: var(--surface);
  background: var(--dark);
}

.experience-intro {
  margin-bottom: 90px;
}

.flow-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.9fr) minmax(420px, 1fr);
  gap: 110px;
  align-items: start;
}

.flow-device {
  position: sticky;
  top: 110px;
  display: flex;
  justify-content: center;
}

.phone-flow {
  width: 380px;
  aspect-ratio: 1220 / 2656;
}

.flow-screen {
  position: absolute;
  inset: 8px;
  width: calc(100% - 16px) !important;
  height: calc(100% - 16px) !important;
  opacity: 0;
  transform: scale(0.985);
  transition: opacity 420ms ease, transform 420ms ease;
}

.flow-screen.is-active {
  opacity: 1;
  transform: scale(1);
}

.flow-steps {
  padding-top: 100px;
}

.flow-step-visual {
  display: none;
}

.flow-step {
  min-height: 520px;
  padding: 80px 0;
  border-top: 1px solid #39322f;
  opacity: 0.38;
  transition: opacity 260ms ease, transform 260ms ease;
}

.flow-step.is-active {
  opacity: 1;
  transform: translateX(8px);
}

.flow-step h3 {
  margin-top: 48px;
  font-size: 42px;
}

.flow-step p {
  max-width: 520px;
  color: #bcb5b1;
  font-size: 18px;
}

.editor-section {
  background: var(--surface);
}

.evolution-section {
  padding: 140px max(var(--page-pad), calc((100vw - var(--content)) / 2));
  background: var(--green-soft);
}

.evolution-grid {
  margin-top: 80px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid #ccebdc;
  border-bottom: 1px solid #ccebdc;
}

.evolution-item {
  min-height: 340px;
  padding: 42px;
  border-right: 1px solid #ccebdc;
}

.evolution-item:last-child {
  border-right: 0;
}

.evolution-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  color: var(--surface);
  border-radius: 50%;
  font-size: 26px;
  font-weight: 900;
}

.evolution-icon-blue {
  background: var(--blue);
}

.evolution-icon-green {
  background: var(--green);
}

.final-cta {
  min-height: 720px;
  padding: 120px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--paper);
}

.final-mark {
  margin-bottom: 28px;
}

.final-cta h2 {
  font-size: 62px;
}

.final-cta .primary-button {
  margin-top: 38px;
}

.site-footer {
  padding: 38px max(var(--page-pad), calc((100vw - var(--content)) / 2));
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  color: #b9b2ae;
  background: var(--dark);
  font-size: 13px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--surface);
  font-size: 15px;
  font-weight: 800;
}

.footer-links,
.footer-legal {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 20px;
}

.footer-links a:hover,
.footer-legal a:hover {
  color: var(--surface);
}

.footer-legal {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid #39322f;
}

.coming-dialog {
  width: min(calc(100% - 32px), 480px);
  padding: 42px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 8px;
  box-shadow: 0 32px 90px rgba(24, 16, 13, 0.28);
  backdrop-filter: blur(24px) saturate(160%);
  text-align: center;
}

.coming-dialog::backdrop {
  background: rgba(27, 20, 18, 0.56);
  backdrop-filter: blur(6px);
}

.coming-dialog img {
  margin: 0 auto 22px;
}

.coming-dialog h2 {
  margin: 0;
  font-size: 28px;
}

.coming-dialog p:not(.eyebrow) {
  margin: 16px 0 28px;
  color: var(--muted);
}

.dialog-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  border: 0;
  color: var(--muted);
  background: transparent;
  border-radius: 50%;
  font-size: 28px;
  cursor: pointer;
}

.secondary-button {
  min-width: 150px;
  height: 48px;
  color: var(--surface);
  background: var(--ink);
  border-radius: 6px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 620ms ease, transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.legal-main {
  min-height: 100vh;
  padding: 150px max(24px, calc((100vw - 860px) / 2)) 100px;
  background: var(--surface);
}

.legal-back {
  display: inline-flex;
  margin-bottom: 44px;
  color: var(--blue);
  font-weight: 750;
}

.legal-main h1 {
  margin: 0;
  font-size: 48px;
  line-height: 1.2;
}

.legal-updated {
  margin: 12px 0 48px;
  color: var(--muted);
}

.legal-main section {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.legal-main h2 {
  margin: 0 0 14px;
  font-size: 22px;
}

.legal-main p,
.legal-main li {
  color: #514b48;
  line-height: 1.85;
}

.legal-main ul {
  padding-left: 22px;
}

@media (max-width: 1024px) {
  :root {
    --page-pad: 36px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) 380px;
  }

  .hero h1 {
    font-size: 62px;
  }

  .hero-promise {
    font-size: 26px;
  }

  .phone-hero {
    width: 340px;
  }

  .plan-section,
  .library-section,
  .editor-section,
  .flow-layout {
    gap: 56px;
  }
}

@media (max-width: 800px) {
  :root {
    --page-pad: 22px;
    --header-height: 62px;
  }

  .site-header {
    top: 8px;
    width: calc(100% - 16px);
    padding: 0 12px;
    gap: 12px;
  }

  .brand span {
    font-size: 15px;
  }

  .brand img {
    width: 34px;
    height: 34px;
  }

  .site-nav {
    display: none;
  }

  .nav-cta {
    min-width: 94px;
    height: 38px;
    margin-left: auto;
    font-size: 13px;
  }

  .hero {
    min-height: 1050px;
    height: auto;
    max-height: none;
    padding-top: 132px;
    padding-bottom: 78px;
    grid-template-columns: 1fr;
    align-content: start;
    gap: 64px;
    text-align: center;
  }

  .hero-copy {
    margin: 0 auto;
  }

  .hero h1 {
    font-size: 50px;
  }

  .hero-promise {
    font-size: 24px;
  }

  .hero-support {
    margin-left: auto;
    margin-right: auto;
    font-size: 16px;
  }

  .hero-actions {
    justify-content: center;
  }

  .phone-hero {
    width: min(78vw, 350px);
    transform: none;
  }

  .hero-note-plan {
    left: 2%;
  }

  .hero-note-action {
    right: 1%;
  }

  .scroll-cue {
    left: 50%;
    transform: translateX(-50%);
  }

  .proof-band {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .proof-item {
    justify-content: flex-start;
    padding-bottom: 24px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  .proof-item:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .section,
  .experience-section,
  .evolution-section {
    padding-top: 92px;
    padding-bottom: 92px;
  }

  .section-heading h2,
  .plan-copy h2,
  .library-copy h2,
  .editor-copy h2,
  .experience-intro h2,
  .final-cta h2 {
    font-size: 42px;
  }

  .decision-list {
    grid-template-columns: 1fr;
    margin-top: 54px;
  }

  .decision-item {
    min-height: 230px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .decision-item:last-child {
    border-bottom: 0;
  }

  .plan-section,
  .library-section,
  .editor-section {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .plan-section,
  .editor-section {
    grid-template-areas: "copy" "visual";
  }

  .plan-copy,
  .editor-copy {
    grid-area: copy;
  }

  .plan-visual,
  .editor-visual {
    grid-area: visual;
  }

  .phone-medium,
  .phone-flow {
    width: min(82vw, 360px);
  }

  .experience-section {
    min-height: auto;
  }

  .flow-layout {
    grid-template-columns: 1fr;
  }

  .flow-device {
    display: none;
  }

  .flow-step-visual {
    margin-bottom: 56px;
    display: flex;
    justify-content: center;
  }

  .phone-flow-inline {
    width: min(72vw, 290px);
    aspect-ratio: 1220 / 2656;
  }

  .flow-steps {
    padding-top: 0;
  }

  .flow-step {
    min-height: auto;
    padding: 72px 0 96px;
  }

  .flow-step h3 {
    font-size: 34px;
  }

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

  .evolution-item {
    min-height: 290px;
    border-right: 0;
    border-bottom: 1px solid #ccebdc;
  }

  .evolution-item:last-child {
    border-bottom: 0;
  }

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

  .footer-links,
  .footer-legal {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .footer-legal {
    grid-column: auto;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 40px;
  }

  .hero-promise {
    font-size: 21px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 18px;
  }

  .hero-note {
    display: none;
  }

  .section-heading h2,
  .plan-copy h2,
  .library-copy h2,
  .editor-copy h2,
  .experience-intro h2,
  .final-cta h2 {
    font-size: 34px;
  }

  .proof-item strong {
    font-size: 42px;
  }

  .decision-item,
  .evolution-item {
    padding-left: 10px;
    padding-right: 10px;
  }

  .coming-dialog {
    padding: 36px 24px 28px;
  }

  .legal-main h1 {
    font-size: 36px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
  }

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

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .hero-note,
  .coming-dialog {
    background: var(--surface);
    backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  .site-header,
  .coming-dialog {
    border-color: var(--ink);
  }
}