@font-face {
  font-family: 'APB Hero Headline';
  src: url('/assets/fonts/hero-headline-heavy.woff2?v=0fdea842') format('woff2');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'APB Hero Lead';
  src: url('/assets/fonts/hero-lead-light.woff2') format('woff2');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
:root {
  color-scheme: light dark;
  --bg: #fff;
  --surface: #f4f9fd;
  --panel: #fff;
  --ink: #182b3d;
  --muted: #607387;
  --blue: #1d6fa8;
  --blue-dark: #165f95;
  --pale: #e7f3ff;
  --line: #dce7ef;
  --shadow: 0 24px 60px -18px #31587926;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    'PingFang SC',
    'Microsoft YaHei',
    sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  line-height: 1.65;
}
button,
a,
input {
  touch-action: manipulation;
}
button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button:disabled {
  cursor: default;
  opacity: 0.56;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
button {
  border: 0;
}
p,
h1,
h2,
h3,
figure {
  margin: 0;
}
p + p {
  margin-top: 12px;
}
[hidden] {
  display: none !important;
}
.wrap {
  width: min(1200px, calc(100% - 80px));
  margin-inline: auto;
}
.section {
  padding: 112px 0;
}
.centered {
  text-align: center;
}
.section-heading {
  margin-bottom: 48px;
}
.section-heading h2 {
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 650;
  letter-spacing: -1.5px;
  line-height: 1.35;
}
.section-heading > p:last-child {
  margin-top: 20px;
  color: var(--muted);
  font-size: 18px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--blue);
  margin-bottom: 18px;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  background: var(--panel);
  padding: 12px;
  z-index: 99;
}
.skip-link:focus {
  top: 12px;
}
.mobile-break {
  display: none;
}
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  height: 80px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 55%, transparent);
}
.nav-wrap {
  height: 100%;
  padding: 0 40px;
  display: flex;
  align-items: center;
  gap: 40px;
  max-width: 1600px;
  margin: auto;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 750;
  white-space: nowrap;
  letter-spacing: -0.5px;
}
.brand-wordmark {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1.15;
}
.brand-wordmark small {
  font-size: 0.5em;
  font-weight: 500;
  letter-spacing: 0.09em;
  color: var(--muted);
  line-height: 1.2;
}
.desktop-links {
  display: flex;
  gap: 32px;
  margin-left: auto;
  font-size: 14px;
}
.desktop-links a:hover,
.text-link:hover {
  color: var(--blue);
}
.nav-download {
  display: flex;
  gap: 28px;
  align-items: center;
  padding: 9px 20px;
  border-radius: 99px;
  background: var(--ink);
  color: var(--bg);
  font-size: 14px;
}
.mobile-menu {
  display: none;
}
.hero {
  padding: 150px 0 72px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 82% 46%, #b3ddfb60, transparent 55%),
    linear-gradient(180deg, var(--bg), var(--surface));
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  align-items: center;
  gap: 55px;
}
.hero h1 {
  font-family: 'APB Hero Headline', 'Source Han Sans SC', 'Noto Sans CJK SC', sans-serif;
  font-size: clamp(44px, 4.5vw, 64px);
  letter-spacing: -0.025em;
  line-height: 1.26;
  font-weight: 900;
}
.hero-line {
  color: var(--blue);
}
#hero-word {
  display: inline-block;
  min-width: 3.1em;
  transition:
    opacity 0.18s,
    transform 0.18s;
}
.cursor {
  display: inline-block;
  height: 0.8em;
  width: 3px;
  background: #80c7f8;
  margin-left: 10px;
}
.lead {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.9;
  margin-top: 24px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.hero-actions .icon-slot {
  width: 22px;
  height: 22px;
}
@media (hover: none), (pointer: coarse) {
  #hero-word {
    width: 3.1em;
    white-space: nowrap;
    transition: none;
    /* 文字切换期间保持动画图层稳定 */
    will-change: transform, opacity;
  }
  .hero-actions {
    /* 静态控件与手机端标题、背景合成层隔离 */
    isolation: isolate;
    transform: translateZ(0);
  }
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 13px 24px;
  min-height: 50px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition:
    transform 0.2s,
    background 0.2s;
}
.primary {
  background: var(--blue);
  color: #fff;
}
.primary:hover:not(:disabled) {
  background: var(--blue-dark);
  transform: translateY(-2px);
}
.secondary {
  background: var(--panel);
  border-color: var(--line);
  color: var(--ink);
}
.secondary:hover:not(:disabled) {
  background: var(--pale);
}
.quiet-note {
  color: var(--muted);
  font-size: 12px;
  margin-top: 20px;
}
.hero-art {
  position: relative;
  height: 340px;
  display: grid;
  place-items: center;
}
.orbit {
  position: absolute;
  border: 1px solid #7cb6df42;
  border-radius: 50%;
  width: 340px;
  height: 340px;
  transform: rotate(-25deg) scaleX(1.25);
}
.orbit-two {
  width: 420px;
  height: 190px;
  transform: rotate(32deg);
}
.big-book {
  width: 195px;
  height: 252px;
  position: relative;
  transform: rotate(-12deg);
  filter: drop-shadow(18px 28px 20px #2f7ab328);
}
.book-cover {
  height: 100%;
  border-radius: 6px 20px 20px 6px;
  background: linear-gradient(140deg, #ecf8ff, #cde9fd);
  border: 1px solid #ffffffce;
  padding: 25px 26px;
  color: #216592;
  display: flex;
  flex-direction: column;
  box-shadow: inset 7px 0 #b6dbf4;
}
.book-cover img {
  margin-bottom: 15px;
  width: 48px;
}
.book-cover span {
  font-size: 26px;
  line-height: 1.4;
  font-weight: 650;
}
.book-cover small {
  font-size: 9px;
  letter-spacing: 2px;
  margin-top: auto;
}
.book-spine {
  position: absolute;
  inset: 8px -8px -7px 9px;
  background: repeating-linear-gradient(#e8f2f8 0 2px, #fff 2px 4px);
  border-radius: 8px 20px 20px 8px;
  z-index: -1;
}
.float-note {
  position: absolute;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 11px 18px;
  box-shadow: 0 10px 25px #3879a314;
  border-radius: 12px;
  font-size: 13px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 9px;
}
.float-note span {
  color: var(--blue);
  font-size: 20px;
}
.note-top {
  top: 30px;
  right: -10px;
  transform: rotate(5deg);
}
.note-bottom {
  bottom: 13px;
  left: -12px;
  transform: rotate(4deg);
}
.art-dot {
  position: absolute;
  background: #89c9f6;
  border-radius: 50%;
  width: 10px;
  height: 10px;
}
.dot-one {
  left: 30px;
  top: 80px;
}
.dot-two {
  right: 30px;
  bottom: 65px;
  width: 6px;
  height: 6px;
}
.demo-section {
  position: relative;
  margin-top: 8px;
}
.demo-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--muted);
}
.demo-topline p {
  font-size: 15px;
  color: var(--ink);
  font-weight: 600;
}
.demo-shell {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 240px;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 565px;
  background: var(--panel);
}
.demo-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 24px 14px;
  display: flex;
  flex-direction: column;
}
.demo-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 650;
  margin: 0 10px 28px;
}
.side-label {
  font-size: 11px;
  color: var(--muted);
  margin: 0 10px 13px;
}
.topic-list {
  display: grid;
  gap: 8px;
}
.topic {
  width: 100%;
  background: transparent;
  text-align: left;
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 12px 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 13px;
}
.topic small {
  display: block;
  color: var(--muted);
  font-size: 10px;
  margin-top: 4px;
}
.topic.active {
  background: var(--panel);
  border-color: var(--line);
  box-shadow: 0 3px 8px #234c6510;
}
.mini-cover {
  display: grid;
  place-content: center;
  border-radius: 3px 7px 7px 3px;
  width: 38px;
  height: 48px;
  font-size: 10px;
  line-height: 1.3;
  flex: none;
  box-shadow: inset 3px 0 #00000008;
}
.blue {
  background: #d9efff;
  color: #3d7ca4;
}
.mint {
  background: #e0f0e8;
  color: #49765b;
}
.apricot {
  background: #f8eddf;
  color: #96713f;
}
.sidebar-bottom {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: auto 10px 0;
  color: var(--muted);
  font-size: 12px;
}
.sidebar-bottom > span {
  font-size: 34px;
  color: #a6c7df;
}
.demo-main {
  min-width: 0;
}
.demo-toolbar {
  height: 60px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  gap: 8px;
}
.demo-badge {
  font-size: 10px;
  background: var(--pale);
  color: var(--blue);
  border-radius: 5px;
  padding: 3px 7px;
  white-space: nowrap;
}
.quiz-content {
  padding: 30px;
}
.quiz-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 18px;
}
.quiz-meta span:first-child {
  color: var(--blue);
}
.quiz-content h2 {
  font-size: 20px;
  line-height: 1.7;
  font-weight: 600;
  margin-bottom: 24px;
}
.quiz-options {
  display: grid;
  gap: 10px;
}
.quiz-option {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 14px;
  display: flex;
  gap: 12px;
  align-items: center;
  text-align: left;
  font-size: 13px;
}
.quiz-option > span {
  border: 1px solid var(--line);
  border-radius: 6px;
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  flex: none;
  font-size: 11px;
}
.quiz-option.selected {
  background: var(--pale);
  border-color: var(--blue);
}
.quiz-option.correct {
  border-color: #459c75;
  background: color-mix(in srgb, #91dfb8 15%, var(--panel));
}
.quiz-option.incorrect {
  border-color: #c9796b;
}
.quiz-option:disabled {
  opacity: 1;
}
.quiz-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 22px;
}
.quiz-actions .button {
  font-size: 13px;
  min-height: 44px;
  padding: 10px 18px;
}
.text-button {
  padding: 9px 0;
  background: none;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-size: 12px;
  min-height: 44px;
}
.demo-note {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.8;
  margin-top: 19px;
}
.quiz-feedback {
  background: var(--surface);
  border-left: 3px solid var(--blue);
  font-size: 12px;
  line-height: 1.8;
  margin-top: 16px;
  padding: 12px;
}
.demo-phone {
  background: linear-gradient(160deg, var(--pale), var(--surface));
  padding: 25px 23px;
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
}
.phone-label {
  font-size: 12px;
  font-weight: 600;
}
.phone-frame {
  border: 5px solid #ffffff;
  border-radius: 27px;
  overflow: hidden;
  box-shadow: 0 10px 30px #47658121;
  background: #f6faff;
  position: relative;
}
.demo-phone .phone-frame {
  width: 176px;
}
.phone-caption {
  font-size: 9px;
  color: var(--muted);
}
.feature-section {
  padding-bottom: 70px;
}
.feature-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.feature-tabs button {
  padding: 11px 24px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--muted);
  font-size: 14px;
  transition: background 0.2s;
}
.feature-tabs [aria-selected='true'] {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.feature-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--surface);
  border-radius: 24px;
  overflow: hidden;
  min-height: 570px;
}
.feature-copy {
  padding: 65px 58px;
  align-self: center;
}
.feature-copy h3 {
  font-size: 35px;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: -1px;
  margin-bottom: 20px;
  white-space: pre-line;
}
.feature-copy > p:not(.eyebrow) {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}
.feature-copy ul {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  font-size: 13px;
  color: var(--muted);
}
.feature-copy li {
  margin: 10px 0;
}
.feature-copy li::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--blue);
  transform: rotate(-12deg);
  color: var(--blue);
  margin-right: 10px;
}
.text-link {
  display: inline-block;
  font-size: 14px;
  color: var(--blue);
  padding-block: 8px;
  min-height: 40px;
}
.feature-visual {
  min-width: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-top: 30px;
  background: radial-gradient(ellipse at 50% 60%, #bddff680, transparent 68%);
  overflow: hidden;
}
.feature-phone {
  width: 223px;
  border-width: 6px;
  border-radius: 32px;
  margin-bottom: -70px;
  transform: rotate(5deg);
  transition: transform 0.4s;
}
.visual-caption {
  width: 80%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: absolute;
  top: 35px;
  font-size: 12px;
  color: var(--muted);
}
.visual-caption > span:last-child {
  font-size: 40px;
  color: #a2c9e4;
}
.visual-sticker {
  position: absolute;
  bottom: 55px;
  left: 15px;
  background: var(--panel);
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  transform: rotate(-5deg);
  font-size: 13px;
  box-shadow: var(--shadow);
}
.carousel-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  font-size: 12px;
  color: var(--muted);
}
.carousel-controls > div {
  display: flex;
  gap: 9px;
}
.carousel-controls button {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 99px;
  min-width: 44px;
  height: 44px;
  padding: 0 16px;
  font-size: 13px;
}
.ecosystem-section {
  padding-top: 60px;
  background: linear-gradient(var(--bg), var(--surface));
}
.learning-orbit {
  position: relative;
  width: min(900px, 100%);
  height: 440px;
  margin: auto;
}
.learning-orbit::before,
.learning-orbit::after {
  content: '';
  position: absolute;
  inset: 60px 100px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transform: rotate(-12deg);
}
.learning-orbit::after {
  inset: 125px 10px;
  transform: rotate(10deg);
}
.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 26px;
  z-index: 2;
  box-shadow: var(--shadow);
  gap: 10px;
}
.orbit-center strong {
  font-size: 20px;
}
.orbit-center > span {
  font-size: 10px;
  color: var(--muted);
}
.orbit-item {
  position: absolute;
  z-index: 2;
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 14px;
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px 22px;
  border-radius: 15px;
  min-width: 190px;
  box-shadow: 0 5px 20px #54789408;
}
.orbit-item > span {
  grid-row: 1/3;
  font-size: 30px;
  color: var(--blue);
  text-align: center;
}
.orbit-item strong {
  font-size: 13px;
}
.orbit-item small {
  font-size: 10px;
  color: var(--muted);
}
.oi-1 {
  top: 20px;
  left: 30%;
}
.oi-2 {
  top: 100px;
  right: 0;
}
.oi-3 {
  bottom: 60px;
  right: 5%;
}
.oi-4 {
  bottom: 0;
  left: 31%;
}
.oi-5 {
  bottom: 80px;
  left: 0;
}
.oi-6 {
  top: 80px;
  left: 2%;
}
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1120px;
  margin: auto;
}
.benefit-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 36px;
  background: var(--panel);
}
.benefit-card.featured {
  background: linear-gradient(150deg, var(--pale), var(--panel));
  border-color: #add0e9;
}
.benefit-card.lifetime {
  background: linear-gradient(155deg, #faf5e7, #eff5ed);
  border-color: #d5cba5;
  color: #29483d;
}
.benefit-card.lifetime .plan-label {
  color: #806124;
}
.benefit-card.lifetime .plan-value {
  color: #735620;
}
.plan-value small {
  font-size: 12px;
  letter-spacing: 0;
  font-weight: 400;
}
@media (min-width: 701px) and (max-width: 1050px) {
  .benefit-grid {
    gap: 14px;
  }
  .benefit-card {
    padding: 24px 18px;
  }
  .benefit-card .plan-value {
    font-size: 24px;
  }
}
.plan-label {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--muted);
}
.benefit-card h3 {
  font-size: 23px;
  margin-top: 15px;
}
.plan-value {
  font-size: 28px;
  line-height: 1.5;
  margin: 18px 0 8px;
  letter-spacing: -1px;
}
.benefit-card > p:not(.plan-value) {
  font-size: 14px;
  color: var(--muted);
}
.benefit-card .button {
  display: flex;
  margin-top: 27px;
}
.benefit-card ul {
  list-style: none;
  padding: 0;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 26px;
  font-size: 13px;
  color: var(--muted);
}
.benefit-card li {
  margin: 13px 0;
}
.benefit-card li::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: currentColor;
  transform: rotate(-12deg);
  margin-right: 12px;
  color: var(--blue);
}
.benefit-note {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  margin-top: 26px;
}
.privacy-strip {
  padding: 35px 30px;
  border-block: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 24px;
}
.privacy-strip h2 {
  font-size: 19px;
  font-weight: 600;
}
.privacy-strip p {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}
.privacy-icon {
  font-size: 46px;
  color: var(--blue);
}
.privacy-strip .text-link {
  margin-left: auto;
  white-space: nowrap;
}
.faq-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
}
.faq-layout h2 {
  font-size: 35px;
}
.faq-layout .section-heading p {
  font-size: 14px;
}
.questions details {
  border-bottom: 1px solid var(--line);
  padding: 21px 0;
}
.questions summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 15px;
  font-weight: 500;
  min-height: 28px;
  align-items: center;
}
.questions summary::-webkit-details-marker {
  display: none;
}
.questions summary > span:last-child {
  font-size: 22px;
  font-weight: 300;
  color: var(--muted);
}
.questions [open] summary > span:last-child {
  transform: rotate(45deg);
}
.questions p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--muted);
  margin-top: 15px;
}
.questions a {
  text-decoration: underline;
}
.download-section {
  padding: 90px 0;
  background: linear-gradient(125deg, var(--pale), var(--surface) 65%);
}
.download-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 80px;
  align-items: center;
}
.download-layout h2 {
  font-size: 48px;
  font-weight: 650;
  line-height: 1.4;
  letter-spacing: -2px;
}
.download-layout > div > p:not(.eyebrow) {
  font-size: 15px;
  color: var(--muted);
  margin-top: 20px;
}
.download-platforms {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 12px;
  color: var(--muted);
  margin-top: 30px;
}
.platform-pill {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 8px 20px;
  border-radius: 99px;
  color: var(--blue);
}
.download-card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 30px;
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.download-card-top {
  display: flex;
  gap: 16px;
  align-items: center;
}
.download-card h3 {
  font-size: 18px;
}
.download-card-top p {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}
.download-card #release-message {
  font-size: 13px;
  line-height: 1.8;
  margin: 12px 0 16px;
  color: var(--muted);
}
.download-slogan {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  margin-top: 22px;
  color: var(--ink);
}
.download-intro {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}
.full-width {
  width: 100%;
}
.download-card details {
  font-size: 11px;
  margin-top: 18px;
  color: var(--muted);
}
.download-card summary {
  cursor: pointer;
  min-height: 30px;
}
.download-card details p {
  margin-top: 12px;
}
.download-card code {
  overflow-wrap: anywhere;
  display: block;
  font-size: 10px;
  margin-top: 5px;
}
.site-footer {
  padding: 65px 0 28px;
  font-size: 12px;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
}
.footer-grid .brand {
  color: var(--ink);
}
.footer-grid h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 18px;
}
.footer-grid a:not(.brand) {
  display: block;
  margin: 10px 0;
  overflow-wrap: anywhere;
}
.footer-grid p {
  font-size: 11px;
  margin-top: 14px;
}
.footer-bottom {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  font-size: 10px;
}
.footer-bottom p + p {
  margin-top: 5px;
}
.footer-bottom address {
  font-style: normal;
  margin: 5px 0;
}
.footer-filings {
  display: grid;
  gap: 10px;
  min-width: 0;
  margin-left: auto;
  justify-items: end;
}
.footer-filings a {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  text-underline-offset: 3px;
  transition: none;
  overflow-wrap: anywhere;
}
.footer-filings img {
  flex-shrink: 0;
  object-fit: contain;
}
.company-link {
  text-decoration: none;
  text-underline-offset: 3px;
}
.footer-filings a:hover,
.footer-filings a:focus-visible,
.company-link:hover,
.company-link:focus-visible {
  color: var(--blue);
  text-decoration: underline;
}
@media (prefers-color-scheme: dark) {
  .benefit-card.lifetime {
    background: linear-gradient(155deg, #383327, #263b32);
    color: #eff5e9;
    border-color: #726546;
  }
  .benefit-card.lifetime .plan-label,
  .benefit-card.lifetime .plan-value {
    color: #e7ca90;
  }
  :root {
    --bg: #101c27;
    --surface: #132331;
    --panel: #172838;
    --ink: #eaf5fe;
    --muted: #a3b8cc;
    --blue: #83c9ff;
    --blue-dark: #62b2ed;
    --pale: #203c53;
    --line: #304555;
    --shadow: 0 24px 60px -18px #0008;
  }
  .primary {
    color: #102c40;
  }
  .hero-glow {
    background: radial-gradient(ellipse at 82% 46%, #234e7040, transparent 60%);
  }
  .feature-visual {
    background: radial-gradient(ellipse at 50% 60%, #224b6a80, transparent 68%);
  }
  .phone-frame {
    border-color: #345165;
  }
}
@media (max-width: 1100px) {
  .demo-shell {
    grid-template-columns: 205px minmax(0, 1fr);
  }
  .demo-phone {
    display: none;
  }
  .hero-inner {
    gap: 24px;
  }
  .note-top {
    right: 0;
  }
  .hero-art {
    transform: scale(0.85);
  }
  .feature-copy {
    padding: 40px;
  }
  .download-layout {
    gap: 40px;
    grid-template-columns: 1fr 390px;
  }
  .footer-grid {
    gap: 24px;
  }
  .desktop-links {
    gap: 20px;
  }
}
@media (max-width: 960px) {
  .desktop-links {
    display: none;
  }
  .nav-download {
    margin-left: auto;
  }
  .mobile-menu {
    display: block;
  }
  .mobile-menu summary {
    cursor: pointer;
    list-style: none;
    min-width: 44px;
    min-height: 44px;
    display: grid;
    place-items: center;
    font-size: 22px;
  }
  .mobile-menu > div {
    position: absolute;
    right: 20px;
    top: 70px;
    width: 230px;
    display: flex;
    flex-direction: column;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 15px;
    box-shadow: var(--shadow);
    padding: 14px;
  }
  .mobile-menu a {
    padding: 12px;
  }
  .hero-art {
    transform: scale(0.7);
    margin-left: -30px;
  }
  .hero-inner {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 0;
  }
  .hero h1 {
    font-size: 48px;
  }
  .lead {
    font-size: 16px;
  }
  .feature-panel {
    min-height: 540px;
  }
  .feature-copy h3 {
    font-size: 30px;
  }
  .feature-copy {
    padding: 35px;
  }
  .faq-layout {
    gap: 45px;
  }
  .learning-orbit {
    transform: scale(0.9);
  }
  .download-layout {
    grid-template-columns: 1fr 1fr;
  }
  .download-layout h2 {
    font-size: 38px;
  }
  .footer-grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 30px;
  }
}
@media (max-width: 640px) {
  html {
    scroll-padding-top: 90px;
  }
  .wrap {
    width: calc(100% - 40px);
  }
  .section {
    padding: 68px 0;
  }
  .nav-wrap {
    padding: 0 20px;
    gap: 10px;
  }
  .site-header {
    height: 70px;
  }
  .brand {
    font-size: 18px;
  }
  .brand img {
    width: 30px;
  }
  .nav-download {
    font-size: 11px;
    padding: 8px 14px;
    gap: 10px;
  }
  .mobile-menu summary {
    font-size: 20px;
    min-width: 34px;
  }
  .hero {
    padding: 116px 0 38px;
  }
  .hero-inner {
    display: block;
  }
  .hero h1 {
    font-size: 40px;
    line-height: 1.35;
    letter-spacing: -0.015em;
  }
  .hero .mobile-break {
    display: none;
  }
  .hero-art {
    display: none;
  }
  .lead {
    font-size: 15px;
  }
  .hero-actions {
    gap: 10px;
    margin-top: 25px;
  }
  .button {
    padding: 12px 16px;
    font-size: 13px;
  }
  .hero .eyebrow {
    font-size: 11px;
  }
  .demo-topline {
    align-items: flex-start;
    gap: 8px;
  }
  .demo-topline > span {
    font-size: 9px;
    padding-top: 5px;
  }
  .demo-topline p {
    font-size: 13px;
  }
  .demo-shell {
    display: block;
    border-radius: 15px;
    min-height: 0;
  }
  .demo-sidebar {
    padding: 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .demo-brand,
  .side-label,
  .sidebar-bottom {
    display: none;
  }
  .topic-list {
    display: flex;
    gap: 6px;
  }
  .topic {
    justify-content: center;
    padding: 10px 5px;
    font-size: 10px;
    line-height: 1.6;
  }
  .topic small,
  .mini-cover {
    display: none;
  }
  .demo-toolbar {
    padding: 0 20px;
    height: 50px;
  }
  .quiz-content {
    padding: 23px 20px;
  }
  .quiz-content h2 {
    font-size: 17px;
    line-height: 1.75;
  }
  .quiz-option {
    font-size: 12px;
    padding: 12px;
  }
  .quiz-actions {
    flex-wrap: wrap;
  }
  .demo-note {
    font-size: 10px;
  }
  .section-heading h2 {
    font-size: 32px;
    letter-spacing: -1px;
  }
  .section-heading {
    margin-bottom: 32px;
  }
  .section-heading > p:last-child {
    font-size: 14px;
  }
  .eyebrow {
    font-size: 11px;
    margin-bottom: 15px;
  }
  .feature-tabs {
    gap: 8px;
    margin-bottom: 25px;
  }
  .feature-tabs button {
    padding: 9px 13px;
    font-size: 11px;
    min-height: 44px;
  }
  .feature-panel {
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .feature-copy {
    padding: 32px 26px;
  }
  .feature-copy h3 {
    font-size: 27px;
  }
  .feature-copy > p:not(.eyebrow) {
    font-size: 13px;
  }
  .feature-copy ul {
    font-size: 12px;
    margin: 18px 0;
  }
  .feature-visual {
    height: 370px;
    flex: none;
    padding-top: 40px;
  }
  .feature-phone {
    width: 195px;
    margin-bottom: -95px;
  }
  .visual-caption {
    top: 15px;
  }
  .visual-sticker {
    bottom: 40px;
    left: 20px;
    font-size: 11px;
  }
  .learning-orbit {
    transform: none;
    height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .learning-orbit::before,
  .learning-orbit::after {
    display: none;
  }
  .orbit-center {
    position: static;
    transform: none;
    grid-column: 1/3;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    padding: 20px;
    margin: 0 auto 14px;
    width: 100%;
  }
  .orbit-center img {
    width: 40px;
  }
  .orbit-center strong {
    font-size: 18px;
  }
  .orbit-center > span {
    width: 100%;
    text-align: center;
  }
  .orbit-item {
    position: static;
    min-width: 0;
    padding: 14px 11px;
    gap: 8px;
    grid-template-columns: 30px 1fr;
    border-radius: 12px;
  }
  .orbit-item > span {
    font-size: 24px;
  }
  .orbit-item strong {
    font-size: 12px;
  }
  .orbit-item small {
    font-size: 9px;
  }
  .benefit-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .benefit-card {
    padding: 28px;
  }
  .plan-value {
    font-size: 27px;
  }
  .benefit-note {
    font-size: 10px;
  }
  .privacy-strip {
    padding: 25px 0;
    gap: 15px;
    flex-wrap: wrap;
  }
  .privacy-icon {
    font-size: 36px;
  }
  .privacy-strip > div {
    flex: 1;
  }
  .privacy-strip h2 {
    font-size: 17px;
  }
  .privacy-strip .text-link {
    margin-left: 50px;
  }
  .faq-layout {
    display: block;
  }
  .faq-layout .section-heading {
    margin-bottom: 20px;
  }
  .questions summary {
    font-size: 14px;
  }
  .questions p {
    font-size: 12px;
  }
  .download-section {
    padding: 60px 0;
  }
  .download-layout {
    display: block;
  }
  .download-layout h2 {
    font-size: 38px;
  }
  .download-layout > div > p:not(.eyebrow) {
    font-size: 13px;
  }
  .download-card {
    margin-top: 32px;
    padding: 25px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px 20px;
  }
  .footer-grid > div:first-child {
    grid-column: 1/3;
  }
  .footer-grid > div:last-child {
    grid-column: 1/3;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    font-size: 10px;
    gap: 18px;
  }
  .site-footer {
    padding-top: 45px;
  }
  .mobile-break {
    display: block;
  }
  .desktop-break {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}
@media (max-width: 640px) {
  .privacy-strip > div {
    flex: 1 1 calc(100% - 65px);
    min-width: 0;
  }
  .privacy-strip > .text-link {
    flex-basis: 100%;
    margin-left: 51px;
    white-space: normal;
  }
}

/* 动效仅作装饰，不遮挡文字和控件 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.reading-progress {
  position: absolute;
  inset: auto 0 -1px;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}
.reading-progress span {
  display: block;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, #5ab6ef, var(--blue), #8bdddf);
}
.site-header {
  transition: box-shadow 0.4s;
}
.site-header.scrolled {
  box-shadow: 0 8px 30px #163d6410;
}
.desktop-links a {
  position: relative;
}
.desktop-links a::after {
  content: '';
  position: absolute;
  inset: auto 0 -8px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}
.desktop-links a:hover::after,
.desktop-links a:focus-visible::after {
  transform: scaleX(1);
}
.hero-aurora,
#hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}
.hero-aurora {
  overflow: hidden;
  opacity: 0.72;
  mask-image: linear-gradient(90deg, #0003, #000);
}
.hero-aurora i {
  position: absolute;
  width: 720px;
  height: 620px;
  right: -6%;
  top: -10%;
  background: radial-gradient(ellipse, #84ccff63, #bbe7fa2b 40%, transparent 70%);
  animation: aurora-drift 15s ease-in-out infinite alternate;
}
.hero-aurora i:nth-child(2) {
  top: 8%;
  right: 10%;
  width: 600px;
  background: radial-gradient(ellipse, #b1aafa38, #a6eade25 40%, transparent 68%);
  animation-delay: -7s;
  animation-direction: alternate-reverse;
}
#hero-particles {
  mask-image: linear-gradient(90deg, #0002, #000b 65%);
}
.hero-art {
  height: 380px;
  perspective: 900px;
  transform: rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition: transform 0.7s var(--ease-out);
}
.book-halo {
  position: absolute;
  width: 370px;
  height: 370px;
  border-radius: 50%;
  background: radial-gradient(circle, #b9e1fb60, #bbeafa10 65%, transparent 72%);
  box-shadow: inset 0 0 50px #a3d9ff20;
  animation: halo-breathe 6s ease-in-out infinite alternate;
}
.big-book {
  animation: book-float 7s ease-in-out infinite;
}
.book-cover {
  position: relative;
  overflow: hidden;
}
.book-cover::after {
  content: '';
  position: absolute;
  inset: -100% -80%;
  background: linear-gradient(110deg, transparent 38%, #ffffff70 48%, transparent 59%);
  transform: translateX(-45%);
  animation: cover-light 9s ease-in-out infinite;
  pointer-events: none;
}
.note-top {
  animation: note-drift 6s ease-in-out infinite alternate;
}
.note-bottom {
  animation: note-drift 7.5s ease-in-out -3s infinite alternate-reverse;
}
.orbit::after {
  content: '';
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  top: 50%;
  left: -4px;
  background: #7bc3f5;
  box-shadow: 0 0 16px #6bbdff70;
}
.orbit-one {
  animation: orbit-turn 22s linear infinite;
}
.orbit-two {
  animation: orbit-sway 12s ease-in-out infinite alternate;
}
.art-spark {
  position: absolute;
  font-size: 42px;
  color: #6fafd9;
  animation: spark-turn 12s ease-in-out infinite;
}
.spark-one {
  top: 7px;
  left: 50px;
}
.spark-two {
  bottom: 35px;
  right: 50px;
  font-size: 26px;
  animation-delay: -6s;
}
.hero-caption {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 20px;
}
.hero-caption .quiet-note {
  margin: 0;
}
.button,
.nav-download {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.button::after,
.nav-download::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 20%, #ffffff14 50%, transparent 80%);
  transform: translateX(-130%);
  transition: transform 0.8s var(--ease-out);
  pointer-events: none;
}
.button:hover:not(:disabled)::after,
.nav-download:hover::after {
  transform: translateX(130%);
}
.button:active:not(:disabled) {
  transform: translateY(0) scale(0.97);
}
.quiz-content {
  position: relative;
  overflow: hidden;
}
.quiz-meta {
  margin-bottom: 10px;
}
.quiz-track {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
}
.quiz-track span {
  flex: 1;
  height: 3px;
  border-radius: 4px;
  background: var(--line);
  transition: background 0.4s;
}
.quiz-track .current {
  background: #88bfe3;
}
.quiz-track .complete {
  background: var(--blue);
}
.quiz-option {
  transition:
    border-color 0.2s,
    background 0.2s,
    transform 0.2s;
}
.quiz-option:hover:not(:disabled) {
  border-color: var(--blue);
  transform: translateX(3px);
}
.quiz-result {
  margin-top: 16px;
  padding: 13px 16px;
  background: var(--pale);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 13px;
  color: var(--blue);
}
.answer-spark {
  position: absolute;
  pointer-events: none;
  top: 45%;
  left: 50%;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: #6db6e8;
}
.answer-spark:nth-of-type(3n) {
  background: #83c7b3;
  border-radius: 50%;
}
.answer-spark:nth-of-type(3n + 1) {
  background: #e4bc76;
}
.demo-note,
.phone-caption,
.side-label,
.topic small {
  font-size: 11px;
}
.feature-visual {
  touch-action: pan-y;
}
.feature-visual::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  top: 20%;
  border: 1px solid #76b7e331;
  border-radius: 50%;
  box-shadow:
    0 0 0 48px #76b7e309,
    0 0 0 49px #76b7e31a;
  animation: halo-breathe 8s ease-in-out infinite alternate;
}
.feature-phone {
  transition: transform 0.7s var(--ease-out);
}
.feature-visual:hover .feature-phone {
  transform: translateY(-12px) rotate(0);
}
.carousel-controls button {
  transition:
    border-color 0.2s,
    transform 0.25s;
}
.carousel-controls button:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.carousel-controls button:active {
  transform: scale(0.94);
}
.knowledge-paths {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}
.knowledge-paths path {
  fill: none;
  stroke: #83b9de;
  stroke-width: 1.5;
  stroke-dasharray: 4 14;
  opacity: 0.6;
  animation: knowledge-flow 14s linear infinite;
}
.orbit-center::after {
  content: '';
  position: absolute;
  inset: -12px;
  border: 1px solid #8fc4e644;
  border-radius: 36px;
  z-index: -1;
  animation: halo-breathe 4s ease-in-out infinite alternate;
}
.orbit-item > span {
  animation: icon-float 5s ease-in-out infinite alternate;
}
.oi-2 > span,
.oi-5 > span {
  animation-delay: -2s;
}
.oi-3 > span,
.oi-6 > span {
  animation-delay: -3.5s;
}
.orbit-item {
  transition:
    translate 0.35s,
    box-shadow 0.35s;
}
.orbit-item:hover {
  translate: 0 -6px;
  box-shadow: 0 16px 36px #376a9518;
}
.benefit-card,
.download-card {
  position: relative;
  isolation: isolate;
}
.benefit-card::after,
.download-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: radial-gradient(
    260px circle at var(--spot-x, 50%) var(--spot-y, 0%),
    #7cc6fa26,
    transparent 80%
  );
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}
.benefit-card:hover::after,
.download-card:hover::after {
  opacity: 1;
}
.benefit-card {
  transition:
    translate 0.4s var(--ease-out),
    box-shadow 0.4s;
}
.benefit-card:hover {
  translate: 0 -6px;
  box-shadow: var(--shadow);
}
.questions summary > span:last-child {
  transition: transform 0.35s var(--ease-out);
}

@keyframes aurora-drift {
  from {
    transform: translate(-35px, 20px) scale(0.9) rotate(-8deg);
  }
  to {
    transform: translate(70px, -25px) scale(1.13) rotate(12deg);
  }
}
@keyframes book-float {
  0%,
  100% {
    transform: translateY(4px) rotate(-12deg) rotateY(-9deg);
  }
  50% {
    transform: translateY(-18px) rotate(-7deg) rotateY(7deg);
  }
}
@keyframes note-drift {
  from {
    translate: 0 0;
  }
  to {
    translate: 4px -14px;
  }
}
@keyframes orbit-turn {
  from {
    transform: rotate(-25deg) scaleX(1.1);
  }
  to {
    transform: rotate(335deg) scaleX(1.1);
  }
}
@keyframes orbit-sway {
  from {
    transform: rotate(20deg) scale(0.94);
  }
  to {
    transform: rotate(44deg) scale(1.08);
  }
}
@keyframes halo-breathe {
  from {
    transform: scale(0.92);
    opacity: 0.55;
  }
  to {
    transform: scale(1.07);
    opacity: 1;
  }
}
@keyframes cover-light {
  0%,
  45% {
    transform: translateX(-45%);
  }
  75%,
  100% {
    transform: translateX(45%);
  }
}
@keyframes spark-turn {
  0%,
  100% {
    transform: rotate(0) scale(0.85);
  }
  50% {
    transform: rotate(90deg) scale(1.1);
  }
}

@keyframes knowledge-flow {
  to {
    stroke-dashoffset: -180;
  }
}
@keyframes icon-float {
  to {
    transform: translateY(-5px) rotate(8deg);
  }
}
.hero *,
.hero *::after,
.ecosystem-section *,
.ecosystem-section *::after,
.feature-visual::before {
  animation-play-state: paused;
}
html[data-motion='on'] .hero[data-in-view='true'] *,
html[data-motion='on'] .hero[data-in-view='true'] *::after,
html[data-motion='on'] .ecosystem-section[data-in-view='true'] *,
html[data-motion='on'] .ecosystem-section[data-in-view='true'] *::after,
html[data-motion='on'] .feature-section[data-in-view='true'] .feature-visual::before {
  animation-play-state: running;
}
html[data-motion='off'] {
  scroll-behavior: auto;
}
html:not([data-motion='on']) *,
html:not([data-motion='on']) *::before,
html:not([data-motion='on']) *::after,
[data-in-view='false'] *,
[data-in-view='false'] *::before,
[data-in-view='false'] *::after {
  animation-play-state: paused !important;
}
html[data-motion='off'] *,
html[data-motion='off'] *::before,
html[data-motion='off'] *::after {
  transition: none !important;
}
@media (max-width: 640px) {
  .hero {
    padding-bottom: 12px;
  }
  .hero-art {
    display: grid;
    height: 230px;
    margin: 8px 0 0;
  }
  .big-book {
    width: 130px;
    height: 169px;
  }
  .book-cover {
    padding: 17px;
    border-radius: 4px 14px 14px 4px;
    box-shadow: inset 5px 0 #b6dbf4;
  }
  .book-cover img {
    width: 32px;
    margin-bottom: 10px;
  }
  .book-cover span {
    font-size: 17px;
  }
  .book-cover small {
    font-size: 7px;
    letter-spacing: 1px;
  }
  .book-halo {
    width: 230px;
    height: 230px;
  }
  .orbit-one {
    width: 220px;
    height: 220px;
  }
  .orbit-two {
    width: 280px;
    height: 120px;
  }
  .float-note {
    font-size: 10px;
    padding: 7px 10px;
    gap: 6px;
    border-radius: 9px;
  }
  .float-note span {
    font-size: 15px;
  }
  .note-top {
    right: 0;
    top: 27px;
  }
  .note-bottom {
    left: 0;
    bottom: 16px;
  }
  .spark-one {
    left: 22px;
    top: 18px;
    font-size: 28px;
  }
  .spark-two {
    right: 22px;
    bottom: 36px;
    font-size: 19px;
  }
  .dot-one {
    left: 20px;
    top: 110px;
  }
  .dot-two {
    right: 30px;
    bottom: 90px;
  }
  .hero-caption {
    gap: 6px 10px;
  }
  .hero-caption .quiet-note {
    font-size: 11px;
  }
  .knowledge-paths {
    display: none;
  }
  .orbit-center::after {
    inset: -6px;
    border-radius: 31px;
  }
  .topic {
    font-size: 11px;
  }
  .quiz-option {
    font-size: 13px;
  }
  .hero-aurora i {
    width: 450px;
    height: 550px;
    top: 20%;
    right: -45%;
  }
  .hero-aurora i:nth-child(2) {
    width: 400px;
    top: 30%;
    right: 0;
  }
}
@media (max-width: 400px) {
  .hero .mobile-break {
    display: initial;
  }
}
@media (max-width: 359px) {
  .hero h1 {
    font-size: 34px;
  }
  .nav-wrap {
    gap: 12px;
    padding-inline: 16px;
  }
  .brand {
    font-size: 16px;
    gap: 6px;
  }
  .nav-download {
    font-size: 10px;
    gap: 5px;
    padding-inline: 10px;
  }
  .hero-actions .button {
    padding-inline: 12px;
  }
  .plan-value {
    font-size: 24px;
  }
  .orbit-item {
    padding-inline: 8px;
    gap: 5px;
    grid-template-columns: 24px 1fr;
  }
}
@media (hover: none) {
  .benefit-card:hover,
  .orbit-item:hover {
    translate: none;
  }
  .feature-visual:hover .feature-phone {
    transform: rotate(5deg);
  }
}