:root {
  --paper: #fff;
  --soft: #f8f3ec;
  --warm: #e8dbcc;
  --ink: #2a2521;
  --body-ink: #4f3c2e;
  --muted: #645549;
  --line: #d6c7ba;
  --accent: #774531;
  --button-hover: #6c5644;
  --content-width: 1120px;
  --section-space: clamp(64px, 8.7vw, 124px);
  --heading-tracking: -.035em;
  --display-face: Georgia, serif;
  --label-face: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  color: var(--ink);
  background: var(--paper);
  font-family: system-ui, 'Segoe UI', 'PingFang SC', 'Hiragino Sans', 'Malgun Gothic', sans-serif;
  font-synthesis: none;
  scroll-behavior: smooth;
  scroll-padding-top: 82px;
}

:root:is(:lang(zh), :lang(ja), :lang(ko)) { --heading-tracking: 0; }
:root:lang(zh) { --display-face: 'Songti SC', SimSun, serif; }
:root:lang(ja) { --display-face: 'Hiragino Mincho ProN', 'Yu Mincho', serif; }
:root:lang(ko) { --display-face: 'AppleMyungjo', Batang, serif; }
* { box-sizing: border-box; }
body, h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { color: inherit; cursor: pointer; }
img, video { display: block; max-width: 100%; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.trap, .skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip:focus { position: fixed; z-index: 5; top: 12px; left: 12px; padding: 12px 16px; background: var(--paper); }

.section-wrap, .reading-wrap { margin-inline: auto; }
.section-wrap { width: min(var(--content-width), 81%); }
.reading-wrap { width: min(760px, calc(100% - 48px)); }

.site-header {
  position: sticky;
  z-index: 4;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.header-layout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  min-height: 64px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.035em;
}
.wordmark::before { width: 17px; height: 17px; border-radius: 5px; background: var(--ink); content: ''; }
.site-header nav, .header-actions { display: flex; align-items: center; gap: 26px; }
.site-header nav { color: var(--muted); font-size: 15px; }
.site-header nav a:hover, .footer-links a:hover, .footer-links button:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.header-actions { justify-content: flex-end; gap: 12px; }
#locale {
  width: auto;
  max-width: 115px;
  min-height: 38px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border: 1px solid var(--body-ink);
  border-radius: 999px;
  background: var(--body-ink);
  color: var(--paper);
  font-weight: 550;
  line-height: 1.35;
  text-align: center;
}
.button:hover { background: var(--button-hover); border-color: var(--button-hover); }
.button-outline { border-color: var(--line); background: transparent; color: var(--ink); }
.button-outline:hover { border-color: var(--ink); background: var(--soft); }
.header-cta { min-height: 48px; padding: 10px 20px; font-size: 14px; white-space: nowrap; }

.hero {
  --hero-background: #24201f;
  background: var(--hero-background);
  color: var(--soft);
}
.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 44fr) minmax(0, 56fr);
  align-items: center;
}
.hero-copy {
  padding-block: clamp(30px, 3.2vw, 70px);
  padding-inline: max(9.5vw, calc((100vw - var(--content-width)) / 2 + 8px)) clamp(24px, 2vw, 40px);
}
.hero-visual { position: relative; }
.hero-visual::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: clamp(48px, 7vw, 134px);
  background: linear-gradient(90deg, var(--hero-background), transparent);
  pointer-events: none;
  content: '';
}
.hero-photo { width: 100%; height: auto; }
.hero-kicker {
  color: var(--warm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .085em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 19px 0 22px;
  font-family: Georgia, serif;
  font-size: clamp(36px, 3.15vw, 56px);
  font-weight: 700;
  line-height: 1.06;
}
.hero h1:lang(en) { letter-spacing: -.035em; }
.hero h1:lang(zh) { font-family: 'Songti SC', SimSun, serif; }
.hero h1:lang(ja) { font-family: 'Hiragino Mincho ProN', 'Yu Mincho', serif; }
.hero h1:lang(ko) { font-family: 'AppleMyungjo', Batang, serif; }
.hero h1 span { display: block; text-wrap: balance; }
.hero-description { max-width: 365px; color: var(--warm); font-size: 15px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 26px; }
.hero-cta { min-height: 48px; border-color: var(--warm); border-radius: 6px; background: var(--warm); color: var(--hero-background); font-size: 15px; font-weight: 750; }
.hero-cta:hover { border-color: var(--soft); background: var(--soft); }
.hero :focus-visible { outline-color: var(--warm); }
.hero-note { margin-top: 15px; color: var(--warm); font-size: 12px; line-height: 1.55; }
.film-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--warm);
  font-size: 14px;
  font-weight: 650;
}
.film-trigger:hover { text-decoration: underline; text-underline-offset: 3px; }
.film-play { display: grid; width: 40px; height: 40px; place-items: center; border: 1px solid var(--line); border-radius: 50%; }
.film-play svg { width: 20px; height: 20px; }

.page-section { padding-block: var(--section-space); }
.section-soft { background: var(--soft); }
.display-heading, .section-heading h2, dialog h2 {
  font-weight: 650;
  letter-spacing: var(--heading-tracking);
  line-height: 1.13;
  text-wrap: balance;
}
.display-heading, .section-heading h2 { font-family: var(--display-face); font-weight: 700; }
.display-heading { font-size: clamp(34px, 4.25vw, 58px); }
.overview-body, .signup-body { margin-top: 20px; color: var(--body-ink); font-size: clamp(17px, 1.65vw, 21px); line-height: 1.65; }
.section-label {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
  color: var(--accent);
  font: 600 12px/1.5 var(--label-face);
  letter-spacing: .09em;
  text-transform: uppercase;
}
.section-label::before { flex: 0 0 6px; height: 6px; border-radius: 2px; background: currentColor; content: ''; }
.overview-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(24px, 5vw, 76px); }
.overview-copy h2 { font-size: clamp(34px, 4.1vw, 50px); white-space: pre-line; text-wrap: pretty; }
.overview-body { max-width: 38ch; }
.overview-link {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
  margin-top: 14px;
  border-bottom: 1px solid var(--line);
  color: var(--accent);
  font-size: 14px;
  font-weight: 650;
}
.overview-link:hover { border-color: currentColor; }
.design-figure { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--soft); }
.design-figure img { width: 100%; height: auto; }
.design-figure figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font: 500 11px/1.5 var(--label-face);
  letter-spacing: .07em;
  text-transform: uppercase;
}
.section-heading { max-width: 700px; margin: 0 auto 42px; text-align: center; }
.section-heading:not(.section-heading-start) .section-label, .join-copy .section-label { justify-content: center; }
.section-heading-start { margin-inline: 0; text-align: start; }
.section-heading h2 { font-size: clamp(33px, 3.65vw, 50px); }
.section-heading-start h2 { text-wrap: pretty; }
.section-heading p { margin-top: 14px; color: var(--muted); font-size: 16px; line-height: 1.65; }

.steps, .feature-grid, .range-grid, .moments-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.steps { gap: clamp(18px, 3vw, 36px); padding: 0; margin: 0; list-style: none; }
.steps li { padding-top: 14px; border-top: 1px solid var(--line); }
.step-label, .feature-mark { display: flex; align-items: center; justify-content: space-between; color: var(--accent); font: 600 13px/1.4 var(--label-face); letter-spacing: .08em; }
.step-label { margin-bottom: 22px; }
.step-label kbd { padding: 5px 9px; border: 1px solid var(--line); border-radius: 5px; box-shadow: 0 2px var(--line); background: var(--paper); color: var(--body-ink); font: inherit; font-size: 11px; }
.steps h3, .feature-grid h3, .model-card h3, .moments-grid h3 { font-size: 20px; font-weight: 650; line-height: 1.3; letter-spacing: -.015em; }
.steps p, .feature-grid p, .model-card p, .moments-grid p { margin-top: 7px; color: var(--muted); font-size: 16px; line-height: 1.6; }
.feature-grid { gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--line); }
.feature-grid article { padding: clamp(20px, 2.55vw, 32px); background: var(--paper); }
.feature-grid article:nth-child(n+4) { background: var(--soft); }
.feature-mark { margin-bottom: 21px; }
.feature-mark svg { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
.finish-dots { display: flex; align-items: center; gap: 4px; height: 30px; }
.finish-dots i { width: 10px; height: 10px; border-radius: 50%; }
.moments-grid article, .model-card {
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--paper);
}
.moments-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.carry-section { background: var(--warm); }
.carry-section .section-heading p { color: var(--body-ink); }
.carry-figure { max-width: 1040px; margin-inline: auto; text-align: center; }
.carry-figure img { width: 100%; height: auto; }
.carry-figure figcaption, .section-note { margin: 18px auto 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
.section-note { max-width: 680px; text-align: center; }

.range-grid { row-gap: 28px; }
.model-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 28px;
}
.model-card:first-child { border-color: var(--button-hover); }
.model-status {
  position: absolute;
  top: 0;
  left: 25px;
  transform: translateY(-50%);
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--body-ink);
  color: var(--paper);
  font-size: 12px;
}
.range-tile { display: block; width: 100%; overflow: hidden; padding: 0; border: 0; border-radius: 12px; background: var(--soft); }
.range-tile img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: right; transition: transform 180ms ease; }
.range-tile:hover img { transform: scale(1.04); }
.model-card p { margin: 0 0 8px; }
.model-card .button { margin-top: auto; }

.faq-layout { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr); gap: clamp(24px, 6vw, 96px); }
.faq-layout .section-heading { margin-bottom: 0; }
.faq-list { counter-reset: faq; }
.faq-list details { border-top: 1px solid var(--line); counter-increment: faq; }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary {
  display: grid;
  grid-template-columns: 2.4ch minmax(0, 1fr) auto;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 19px 0;
  list-style: none;
  cursor: pointer;
  font-weight: 600;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::before { content: counter(faq, decimal-leading-zero); color: var(--accent); font: 600 12px/1.5 var(--label-face); }
.faq-list summary::after { content: '+'; color: var(--muted); font-size: 21px; font-weight: 400; }
.faq-list details[open] summary::after { content: '−'; }
.faq-list p { padding: 0 18px 18px 34px; color: var(--muted); line-height: 1.65; }

.join-layout { text-align: center; }
.preview-note { margin: 16px auto 0; color: var(--muted); font-size: 14px; line-height: 1.6; }
#join-form {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 16px 10px;
  margin-top: 30px;
  text-align: start;
}
.email-field { grid-column: 1; grid-row: 1; }
#submit { grid-column: 2; grid-row: 1; }
.form-row, .consent, .form-status { grid-column: 1 / -1; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.form-field { min-width: 0; }
.form-field label { display: block; margin-bottom: 7px; font-size: 14px; font-weight: 550; }
.form-field input, .form-field select {
  width: 100%;
  min-width: 0;
  min-height: 52px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
}
.consent { display: flex; align-items: flex-start; gap: 8px; color: var(--body-ink); font-size: 14px; line-height: 1.55; }
.consent input { margin: 4px 0 0; accent-color: var(--ink); }
.inline-link { border: 0; padding: 0; background: transparent; color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
#submit:disabled { opacity: .65; cursor: wait; }
.form-status { color: var(--accent); font-size: 14px; }
.form-status:empty { display: none; }
.success { margin-top: 28px; padding: 18px; border-radius: 14px; background: var(--soft); font-size: 15px; line-height: 1.6; }
.success h3 { margin-bottom: 5px; }
.success a { display: inline-block; margin-top: 8px; text-decoration: underline; }

.site-footer { border-top: 1px solid var(--line); background: var(--soft); }
.footer-layout { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px 40px; padding-block: 40px; }
.footer-brand p { margin-top: 9px; }
.footer-brand p, .contact-email { color: var(--muted); font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.contact-email:hover { text-decoration: underline; }
.footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; }
.footer-links a, .footer-links button { border: 0; background: transparent; padding: 6px 0; text-align: start; font-size: 14px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 12px; padding-block: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

dialog { width: min(640px, calc(100% - 32px)); max-height: calc(100% - 32px); overflow: auto; border: 1px solid var(--line); border-radius: 20px; padding: 30px; color: var(--ink); background: var(--paper); }
dialog::backdrop { background: rgb(42 37 33 / 62%); }
dialog h2 { margin-bottom: 20px; padding-right: 30px; font-size: 28px; }
.dialog-close { position: absolute; z-index: 1; right: 10px; top: 10px; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; background: var(--paper); font-size: 25px; line-height: 1; }
.dialog-close:hover { border-color: var(--ink); }
#product-dialog { width: min(940px, calc(100% - 32px)); }
#product-dialog[open] { display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: 28px; }
.product-stage img { width: 100%; height: auto; border-radius: 10px; }
.swatches, .view-switch { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.swatch { width: 34px; height: 34px; border: 2px solid var(--paper); border-radius: 50%; box-shadow: 0 0 0 1px var(--line); }
.swatch[aria-pressed='true'] { box-shadow: 0 0 0 2px var(--ink); }
.black { background: #24201f; }
.silver { background: #c1b4ae; }
.red { background: #8d503d; }
.view-switch button { min-height: 38px; border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; background: var(--paper); }
.view-switch button[aria-pressed='true'] { border-color: var(--ink); background: var(--soft); }
.detail-note, .privacy-body { color: var(--muted); font-size: 14px; line-height: 1.65; }
.detail-note { margin-bottom: 16px; }
#film-dialog { width: min(900px, calc(100% - 32px)); }
#film { width: 100%; aspect-ratio: 16 / 9; background: var(--ink); }
#film-dialog .detail-note { margin: 14px 0 0; }
.no-script { padding: 16px; text-align: center; }

@media (max-width: 900px) {
  .section-wrap { width: calc(100% - 48px); }
  .header-layout { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .moments-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-layout { grid-template-columns: 1fr; }
  .hero-visual { grid-row: 1; }
  .hero-visual::before { display: none; }
  .hero-copy { padding: 34px 24px 44px; }
  .model-card { padding-inline: 18px; }
}

@media (max-width: 680px) {
  :root { scroll-padding-top: 74px; }
  .section-wrap, .reading-wrap { width: calc(100% - 36px); }
  .header-layout { min-height: 63px; gap: 10px; }
  .header-actions { gap: 8px; }
  .header-cta { min-height: 43px; padding-inline: 14px; }
  .wordmark { gap: 7px; }
  .wordmark::before { width: 14px; height: 14px; border-radius: 4px; }
  .hero-copy { padding-inline: 18px; }
  .hero h1 { margin-block: 17px 14px; font-size: clamp(34px, 9.8vw, 46px); }
  .hero-actions { margin-top: 22px; }
  .hero-note { margin-top: 14px; }
  .section-heading { margin-bottom: 30px; }
  .overview-layout, .faq-layout { grid-template-columns: 1fr; }
  .steps, .feature-grid, .range-grid { grid-template-columns: 1fr; }
  .step-label, .feature-mark { margin-bottom: 14px; }
  .model-card { padding: 25px 21px 21px; }
  .model-status { left: 21px; }
  .range-tile img { aspect-ratio: 16 / 10; }
  .moments-grid { gap: 10px; }
  .moments-grid article { padding: 17px 13px; }
  .moments-grid h3 { font-size: 17px; }
  .moments-grid p { font-size: 14px; }
  #join-form { grid-template-columns: 1fr; }
  .email-field, #submit { grid-column: 1; grid-row: auto; }
  #submit { width: 100%; }
  .footer-layout, .footer-bottom { flex-direction: column; }
  #product-dialog[open] { grid-template-columns: 1fr; gap: 14px; }
  dialog { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}