.hero {
  padding: 72px 0 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 1fr;
  gap: clamp(40px, 5vw, 90px);
  align-items: center;
}
.hero-copy {
  padding-block: 20px 36px;
}
.hero h1 {
  max-width: 780px;
}
.hero h1 .serif {
  display: block;
  font-size: 1.12em;
  line-height: 0.98;
}
.hero h1 .title-line {
  display: block;
  white-space: nowrap;
}
.hero .intro {
  max-width: 420px;
  font-size: 17px;
  color: var(--muted);
  margin-top: 30px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 34px;
}
.hero-note {
  font-size: 12px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 420px;
  margin-top: 24px;
}
.hero-art {
  background: var(--stone);
  position: relative;
  min-height: 660px;
  display: grid;
  place-items: center;
  isolation: isolate;
  overflow: hidden;
}
.art-grid {
  position: absolute;
  inset: 38px;
  border: 1px solid #cccec1;
}
.art-grid::before,
.art-grid::after {
  content: "";
  position: absolute;
  background: #cccec1;
}
.art-grid::before {
  left: 50%;
  width: 1px;
  height: 100%;
}
.art-grid::after {
  top: 50%;
  height: 1px;
  width: 100%;
}
.registration {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: var(--muted);
  opacity: 0.6;
}
.registration.tl {
  top: 32px;
  left: 32px;
  border-top: 1px solid;
  border-left: 1px solid;
}
.registration.br {
  bottom: 32px;
  right: 32px;
  border-right: 1px solid;
  border-bottom: 1px solid;
}
.art-label {
  position: absolute;
  left: 24px;
  top: 17px;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.art-side {
  position: absolute;
  right: 15px;
  top: 50%;
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.phone {
  position: relative;
  width: 278px;
  background: #1e211e;
  border: 6px solid #30332d;
  border-radius: 44px;
  overflow: hidden;
  box-shadow:
    0 24px 38px -20px #25282070,
    0 0 0 1px #141813;
  line-height: 0;
}
.phone img {
  width: 100%;
  border-radius: 37px;
}
.hero-art .phone {
  transform: rotate(-5deg);
  transition: transform 0.7s var(--ease);
  margin-block: 40px;
}
.hero-art:hover .phone {
  transform: rotate(-2deg) translateY(-4px);
}
.art-caption {
  position: absolute;
  bottom: 15px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.hero-baseline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 66px;
  padding: 22px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  gap: 20px;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.baseline-facts {
  display: flex;
  gap: 34px;
}
.baseline-facts span {
  display: flex;
  align-items: center;
  gap: 8px;
}
.baseline-facts i {
  width: 4px;
  height: 4px;
  border: 1px solid var(--sage);
  border-radius: 50%;
}
.hero-baseline > a {
  text-decoration: none;
}
.record-section {
  padding-top: 100px;
}
.record-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
  align-items: stretch;
}
.record-story {
  padding-top: 24px;
}
.record-story > p {
  color: var(--muted);
  max-width: 460px;
  font-size: 17px;
  line-height: 1.85;
}
.feature-tabs {
  display: grid;
  margin-top: 38px;
  border-top: 1px solid var(--rule);
}
.feature-tab {
  display: grid;
  grid-template-columns: 40px 1fr 24px;
  align-items: center;
  width: 100%;
  gap: 12px;
  min-height: 88px;
  padding: 22px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: transparent;
  text-align: left;
  font-size: 23px;
  letter-spacing: -0.035em;
  transition:
    padding 0.3s var(--ease),
    color 0.25s;
}
.feature-tab .tab-index {
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--muted);
}
.feature-tab .tab-arrow {
  font-size: 22px;
  opacity: 0;
  transform: translateX(-8px);
  transition:
    transform 0.3s,
    opacity 0.3s;
}
.feature-tab[aria-selected="true"] {
  color: var(--sage);
  padding-left: 12px;
}
.feature-tab[aria-selected="true"] .tab-arrow,
.feature-tab:hover .tab-arrow {
  opacity: 1;
  transform: none;
}
.feature-tab:hover {
  color: var(--sage);
}
.feature-panel {
  margin-top: 30px;
  max-width: 460px;
  min-height: 145px;
}
.feature-panel h3 {
  font-size: 20px;
  margin-bottom: 10px;
}
.feature-panel p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}
.gallery-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #e9ece3;
  min-height: 705px;
  padding: 42px 28px 26px;
}
.gallery-stage .phone {
  width: 260px;
  box-shadow: 0 22px 28px -24px #28382388;
}
.gallery-note {
  font-size: 10px;
  color: var(--muted);
  margin-top: 22px;
  text-align: center;
  line-height: 1.65;
}
.gallery-control {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  gap: 16px;
}
.gallery-control .text-link {
  font-size: 11px;
  min-height: 44px;
}
.gallery-count {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.12em;
}
.gallery-fallback {
  font-size: 13px;
  margin-top: 20px;
}
.gallery-fallback a {
  display: inline-block;
  margin-right: 14px;
  padding-block: 8px;
}
.metis-section {
  background: var(--night);
  color: var(--light);
  padding: 110px 0 90px;
}
.metis-section .index,
.metis-section .chapter p {
  color: #bbc3b7;
}
.metis-section .chapter {
  margin-bottom: 70px;
}
.metis-section h2 .serif {
  display: block;
  font-size: 1.2em;
}
.metis-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 10%;
  align-items: start;
}
.metis-word {
  font: italic clamp(80px, 12vw, 180px) / 1 var(--serif);
  letter-spacing: -0.05em;
  color: #ced7b7;
  margin-bottom: 22px;
}
.metis-intro p {
  max-width: 350px;
  color: #bbc3b7;
  font-size: 15px;
  line-height: 1.85;
}
.metis-orbit {
  margin-top: 45px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #c5ccba;
  font-size: 11px;
}
.metis-orbit i {
  display: block;
  width: 36px;
  height: 1px;
  background: #64725e;
}
.metis-steps {
  border-top: 1px solid #53604f;
}
.metis-steps details {
  border-bottom: 1px solid #53604f;
}
.metis-steps summary {
  display: grid;
  grid-template-columns: 32px 1fr 18px;
  gap: 18px;
  align-items: center;
  list-style: none;
  cursor: pointer;
  padding: 28px 0;
  font-size: 23px;
  letter-spacing: -0.03em;
  line-height: 1.4;
}
.metis-steps summary::-webkit-details-marker {
  display: none;
}
.metis-steps summary .number {
  font-size: 11px;
  color: #a3b397;
}
.metis-steps summary::after {
  content: "+";
  font-size: 24px;
  color: #c5ccba;
}
.metis-steps details[open] summary::after {
  content: "−";
}
.metis-steps details p {
  margin: 0 32px 30px 50px;
  color: #bbc3b7;
  max-width: 480px;
  font-size: 15px;
  line-height: 1.85;
}
.metis-footnote {
  margin-top: 66px;
  padding-top: 24px;
  border-top: 1px solid #53604f;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  font-size: 11px;
  color: #bbc3b7;
}
.metis-footnote p {
  max-width: 690px;
}
.metis-footnote a {
  flex: none;
  align-self: start;
  padding-bottom: 8px;
  min-height: 44px;
}
.privacy-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
  align-items: center;
}
.privacy-art {
  position: relative;
  min-height: 430px;
  display: grid;
  place-items: center;
  background: var(--stone);
  overflow: hidden;
}
.record-sheet {
  width: 66%;
  background: var(--paper);
  padding: 28px 30px;
  border: 1px solid #c6c9b9;
  transform: rotate(-5deg);
  box-shadow: 14px 17px 0 #dfdfd3;
}
.record-sheet .sheet-head {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 16px;
  letter-spacing: 0.08em;
}
.sheet-symbol {
  font: 120px/0.9 var(--serif);
  letter-spacing: -0.075em;
  margin: 28px 0;
}
.sheet-line {
  height: 1px;
  background: var(--rule);
  margin: 14px 0;
}
.sheet-line.short {
  width: 62%;
}
.sheet-bottom {
  font-size: 10px;
  margin-top: 26px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}
.privacy-copy h2 {
  max-width: 600px;
}
.privacy-copy > p {
  margin-top: 24px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}
.privacy-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 28px 0;
  list-style: none;
  font-size: 14px;
}
.privacy-list li {
  display: flex;
  gap: 12px;
}
.privacy-list li::before {
  content: "↗";
  color: var(--sage);
}
.faq-section {
  border-top: 1px solid var(--rule);
  padding-bottom: 110px;
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 12%;
}
.faq-heading .index {
  display: block;
  margin-bottom: 28px;
}
.faq-heading h2 {
  font-size: 48px;
}
.faq details {
  border-bottom: 1px solid var(--rule);
}
.faq details:first-child {
  border-top: 1px solid var(--rule);
}
.faq summary {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  list-style: none;
  cursor: pointer;
  padding: 26px 0;
  font-size: 18px;
  line-height: 1.5;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: "+";
  flex: none;
  font-size: 22px;
}
.faq details[open] summary::after {
  content: "−";
}
.faq details p {
  padding: 0 28px 26px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}
.closing {
  background: var(--stone);
  padding: 76px 0;
}
.closing-inner {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 36px;
}
.closing h2 {
  font-size: clamp(36px, 4.5vw, 64px);
}
.closing p {
  color: var(--muted);
  font-size: 13px;
  margin-top: 20px;
  max-width: 570px;
}
.closing .button {
  flex: none;
}
.image-dialog {
  padding: 22px;
  border: 1px solid var(--rule);
  background: var(--paper);
  max-height: 92vh;
  max-width: 94vw;
  overflow: auto;
}
.image-dialog::backdrop {
  background: #172017b8;
}
.image-dialog button {
  position: sticky;
  top: 0;
  display: block;
  margin: 0 0 16px auto;
  min-height: 44px;
  padding: 8px 18px;
  border: 1px solid var(--rule);
  background: var(--paper);
  z-index: 1;
}
.image-dialog img {
  width: min(420px, 75vw);
  height: auto;
}
.image-dialog p {
  font-size: 12px;
  margin-top: 18px;
  max-width: 420px;
  color: var(--muted);
}
html[lang="zh-Hans"] .hero h1 {
  font-size: clamp(52px, 5.6vw, 88px);
}
html[lang="zh-Hans"] .hero h1 .serif {
  font-size: 0.76em;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-top: 7px;
}
html[lang="zh-Hans"] .hero .intro {
  max-width: 370px;
}
html[lang="zh-Hans"] .metis-section h2 .serif {
  font-size: 1.05em;
  line-height: 1.5;
  margin-top: 6px;
}
@media (min-width: 1550px) {
  .hero-art {
    min-height: 720px;
  }
  .hero-art .phone {
    width: 304px;
  }
}
@media (max-width: 1100px) {
  .hero {
    padding-top: 44px;
  }
  .hero-grid {
    gap: 35px;
  }
  .hero-art {
    min-height: 575px;
  }
  .hero-art .phone {
    width: 235px;
  }
  .hero h1 {
    font-size: clamp(52px, 6.9vw, 76px);
  }
  html[lang="zh-Hans"] .hero h1 {
    font-size: clamp(42px, 5.6vw, 70px);
  }
  .hero .intro {
    font-size: 15px;
  }
  .hero-note {
    font-size: 12px;
  }
  .hero-baseline {
    margin-top: 42px;
  }
  .gallery-stage {
    min-height: 650px;
  }
  .gallery-stage .phone {
    width: 235px;
  }
  .record-layout {
    gap: 6%;
  }
  .metis-grid {
    gap: 7%;
  }
  .privacy-art {
    min-height: 400px;
  }
  .faq-grid {
    gap: 8%;
  }
}
@media (max-width: 760px) {
  .hero {
    padding-top: 34px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .hero-copy {
    padding: 0;
  }
  .hero h1 {
    font-size: clamp(56px, 10vw, 82px);
    max-width: 650px;
  }
  html[lang="zh-Hans"] .hero h1 {
    font-size: clamp(46px, 8.3vw, 68px);
  }
  .hero .intro {
    font-size: 16px;
    max-width: 460px;
    margin-top: 22px;
  }
  .hero-note {
    font-size: 12px;
    max-width: 460px;
  }
  .hero-actions {
    margin-top: 24px;
  }
  .hero-art {
    min-height: 560px;
  }
  .hero-art .phone {
    width: 233px;
  }
  .hero-art .art-grid {
    inset: 28px;
  }
  .hero-baseline {
    margin-top: 30px;
    align-items: start;
  }
  .baseline-facts {
    gap: 12px;
    flex-wrap: wrap;
  }
  .hero-baseline > a {
    display: none;
  }
  .record-section {
    padding-top: 72px;
  }
  .record-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .record-story {
    padding-top: 0;
  }
  .feature-tabs {
    margin-top: 24px;
    grid-template-columns: repeat(2, 1fr);
    border-bottom: 1px solid var(--rule);
  }
  .feature-tab {
    display: flex;
    flex-direction: column;
    align-items: start;
    gap: 5px;
    font-size: 18px;
    min-height: 90px;
    padding: 17px 8px;
    border-bottom: 2px solid transparent;
  }
  .feature-tab[aria-selected="true"] {
    padding-left: 8px;
    border-bottom-color: var(--sage);
  }
  .feature-tab .tab-arrow {
    display: none;
  }
  .feature-panel {
    min-height: 130px;
    margin-top: 22px;
  }
  .gallery-stage {
    min-height: 650px;
  }
  .gallery-stage .phone {
    width: 242px;
  }
  .metis-section {
    padding: 76px 0 60px;
  }
  .metis-section .chapter {
    margin-bottom: 46px;
  }
  .metis-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .metis-word {
    font-size: 110px;
    margin-bottom: 18px;
  }
  .metis-intro {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 16px;
    align-items: center;
  }
  .metis-intro > p {
    font-size: 13px;
  }
  .metis-orbit {
    grid-column: 1/-1;
    margin-top: 6px;
  }
  .metis-steps summary {
    font-size: 21px;
    padding-block: 24px;
  }
  .metis-footnote {
    flex-direction: column;
    margin-top: 42px;
    gap: 20px;
  }
  .privacy-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .privacy-copy {
    grid-row: 1;
  }
  .privacy-art {
    min-height: 350px;
  }
  .record-sheet {
    max-width: 300px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .faq-heading h2 {
    font-size: 40px;
  }
  .faq-heading .index {
    margin-bottom: 18px;
  }
  .faq summary {
    font-size: 16px;
  }
  .faq-section {
    padding-bottom: 72px;
  }
  .closing {
    padding: 60px 0;
  }
  .closing-inner {
    display: block;
  }
  .closing .button {
    margin-top: 28px;
  }
  .gallery-control .text-link {
    font-size: 12px;
  }
}
@media (max-width: 380px) {
  html[lang="zh-Hans"] .hero h1 {
    font-size: 43px;
  }
  .hero h1 {
    font-size: 52px;
  }
  .hero-actions {
    gap: 16px;
  }
  .hero-art {
    min-height: 490px;
  }
  .hero-art .phone {
    width: 200px;
    border-radius: 36px;
  }
  .hero-art .phone img {
    border-radius: 30px;
  }
  .baseline-facts {
    gap: 8px 12px;
    font-size: 10px;
  }
  .feature-tab {
    font-size: 16px;
  }
  .metis-intro {
    grid-template-columns: 1fr;
  }
  .metis-word {
    font-size: 100px;
  }
  .metis-intro > p {
    font-size: 14px;
  }
  .gallery-stage {
    padding-inline: 18px;
    min-height: 610px;
  }
  .gallery-stage .phone {
    width: 226px;
  }
  .gallery-control {
    gap: 6px;
  }
  .gallery-count {
    letter-spacing: 0.02em;
    font-size: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero-art .phone,
  .hero-art:hover .phone {
    transform: none;
  }
}

.metis-section :focus-visible {
  outline-color: #ced7b7;
}