/* 品牌站与各 App 的支持、隐私页面共享颜色和基础排版。 */
:root {
  color-scheme: light;
  --bg: #fcfcf8;
  --surface: #fff;
  --text: #243c32;
  --muted: #647169;
  --brand: #254f40;
  --brand-dark: #254f40;
  --border: #dce2d9;
  --soft: #f0f3ec;
  --accent: #c2633d;
  --max-width: 760px;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "PingFang TC", "Noto Sans SC", sans-serif; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--brand-dark); text-underline-offset: 4px; }
button { font: inherit; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
p, li { color: var(--muted); font-size: 1rem; }
h1, h2, h3, p { margin-top: 0; }
img { display: block; max-width: 100%; }
.wrap { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-size: 1.65rem; font-weight: 650; letter-spacing: -1.3px; text-decoration: none; line-height: 1.2; }
.brand-mark { display: inline-block; font: 2.55rem/1 Georgia, serif; color: var(--brand); margin-right: 2px; }
.brand-period { color: var(--accent); margin-left: -7px; }
.home-header { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 104px; border-bottom: 1px solid var(--border); }
.main-nav { display: flex; gap: 32px; margin-left: auto; }
.main-nav a { font-size: .9rem; text-decoration: none; }
.main-nav a:hover, .footer-links a:hover { color: var(--accent); }
/* 原生下拉保留键盘与手机系统选择器，只展示当前语言。 */
.lang-switch { display: inline-flex; position: relative; flex-shrink: 0; align-items: center; }
.lang-switch::after { content: ""; position: absolute; right: 12px; top: 50%; width: 6px; height: 6px; border-right: 1px solid var(--muted); border-bottom: 1px solid var(--muted); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.lang-switch select { appearance: none; -webkit-appearance: none; border: 1px solid transparent; background: transparent; color: var(--text); border-radius: 6px; min-height: 44px; padding: 8px 30px 8px 10px; font: inherit; font-size: .875rem; cursor: pointer; }
.lang-switch select:hover { background: var(--soft); }
.lang-switch option { background: var(--surface); color: var(--text); }
.skip-link { position: absolute; top: -80px; left: 20px; z-index: 10; padding: 10px 20px; background: var(--brand); color: #fff; }
.skip-link:focus { top: 12px; }
.hero { display: grid; grid-template-columns: .92fr 1.08fr; gap: 56px; align-items: center; padding-block: 76px 72px; }
.eyebrow { color: var(--brand); font-size: .75rem; letter-spacing: 1.7px; font-weight: 600; margin-bottom: 22px; line-height: 1.6; }
.hero h1 { font-family: Georgia, "Songti SC", "Songti TC", serif; font-weight: 400; font-size: clamp(3.5rem, 5.2vw, 4.9rem); line-height: 1.08; letter-spacing: -3.3px; margin-bottom: 28px; }
.hero h1 em { color: var(--brand); font-weight: 400; }
.hero-description { max-width: 460px; font-size: 1.05rem; line-height: 1.85; margin-bottom: 28px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 36px; border-radius: 7px; padding: 13px 23px; text-decoration: none; font-size: .95rem; font-weight: 550; transition: background .2s, transform .2s; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: #fff; background: var(--brand); }
.button.primary:hover { background: #173e30; }
.button > span:last-child { font-size: 1.25rem; }
.hero-note { font-size: .8rem; margin: 15px 0 0; }
.hero-art { margin: 0; position: relative; }
.hero-art img { width: 100%; height: auto; aspect-ratio: 1.14; object-fit: cover; border-radius: 100px 10px 10px 10px; }
.hero-art figcaption { display: flex; align-items: center; justify-content: flex-end; gap: 9px; padding: 13px 0 0; font-size: .8rem; color: var(--muted); }
.caption-mark { font-size: 1.3rem; color: var(--accent); }
.brand-beliefs { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--border); padding-block: 22px; }
.brand-beliefs p { display: flex; align-items: baseline; justify-content: center; gap: 14px; margin: 0; font-size: .875rem; color: var(--text); }
.brand-beliefs p + p { border-left: 1px solid var(--border); }
.brand-beliefs p > span:first-child { color: var(--accent); font-family: Georgia, serif; font-size: .875rem; }
.section { padding-block: 90px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 36px; }
.section-heading .eyebrow { margin-bottom: 12px; }
.home h2 { font-family: Georgia, "Songti SC", "Songti TC", serif; font-weight: 400; font-size: clamp(2rem, 3vw, 2.7rem); letter-spacing: -1.3px; line-height: 1.25; margin: 0; }
.section-heading > p { max-width: 370px; margin: 0 0 3px; font-size: .95rem; }
.app-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.product-card { --tint: #edf5ee; --ink: #376851; display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 25px 26px 19px; position: relative; overflow: hidden; }
.product-card::before { content: ""; position: absolute; top: 0; right: 0; left: 0; height: 4px; background: var(--tint); }
.product-card.coffee { --tint: #f5ede3; --ink: #856344; }
.product-card.fishing { --tint: #eaf1f5; --ink: #46687c; }
.product-card.perfume { --tint: #f5ebf0; --ink: #956781; }
.product-card.sourdough { --tint: #fcf0dd; --ink: #a57837; }
.product-card.bonsai { --tint: #eef1e1; --ink: #687444; }
.product-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 23px; gap: 10px; }
.product-symbol { display: flex; align-items: center; justify-content: center; width: 54px; height: 54px; border-radius: 14px; background: var(--tint); color: var(--ink); font: 2.7rem/1 Georgia, serif; }
.badge { font-size: .75rem; line-height: 1.4; background: var(--soft); color: var(--muted); padding: 5px 10px; border-radius: 30px; }
.badge.developing { color: #376851; background: #edf5ee; }
.product-category { font-size: .75rem; letter-spacing: 1.25px; color: var(--ink); margin-bottom: 4px; font-weight: 600; }
.product-card h3 { font: 400 2rem/1.2 Georgia, serif; letter-spacing: -.8px; margin-bottom: 16px; }
.product-description { font-size: 1rem; line-height: 1.8; margin-bottom: 21px; }
.product-tags { display: flex; flex-wrap: wrap; align-content: flex-end; gap: 6px; margin: auto 0 22px; padding: 0; list-style: none; }
.product-tags li { font-size: .8rem; color: var(--muted); border: 1px solid var(--border); border-radius: 4px; padding: 2px 7px; }
.product-bottom { display: flex; align-items: center; gap: 18px; border-top: 1px solid var(--border); padding-top: 15px; min-height: 41px; font-size: .8rem; color: var(--muted); }
.product-bottom a { font-size: .875rem; text-decoration: none; }
.product-bottom a:hover { text-decoration: underline; }
.product-number { margin-left: auto; font-family: Georgia, serif; color: var(--muted); }
.collection-note { display: flex; gap: 11px; font-size: .8rem; margin: 22px 0 0; max-width: 950px; }
.collection-note > span:first-child { color: var(--accent); }
.interests-section { padding-block: 68px; background: var(--soft); border-block: 1px solid var(--border); }
.interests-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; }
.interests-intro h2 { max-width: 380px; margin-bottom: 22px; }
.interests-intro > p:not(.eyebrow) { max-width: 370px; font-size: 1rem; }
.margin-flower { display: inline-block; color: var(--accent); font: 6rem/1 Georgia, serif; margin-top: 24px; }
.interest-group { display: flex; align-items: baseline; gap: 22px; border-bottom: 1px solid var(--border); padding: 17px 0; }
.interest-group:first-child { padding-top: 0; }
.group-number { color: var(--accent); font-size: .75rem; font-family: Georgia, serif; }
.interest-group h3 { font-size: 1rem; font-weight: 550; margin-bottom: 5px; }
.interest-group p { font-size: .875rem; margin: 0; line-height: 1.85; }
.small-note { font-size: .8rem; margin: 18px 0 0; }
.approach-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 52px; margin-top: 48px; }
.principle-number { color: var(--accent); display: inline-block; font: italic 1.4rem Georgia, serif; margin-bottom: 21px; }
.approach-grid h3 { font-size: 1.15rem; font-weight: 550; margin-bottom: 13px; }
.approach-grid p { font-size: 1rem; margin-bottom: 0; }
.faq-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; padding-block: 52px 85px; border-top: 1px solid var(--border); }
.faq-section .eyebrow { margin-bottom: 12px; }
.faq-list details { border-bottom: 1px solid var(--border); }
.faq-list summary { display: flex; gap: 20px; justify-content: space-between; align-items: baseline; list-style: none; padding: 20px 0; font-size: 1rem; cursor: pointer; font-weight: 550; }
.faq-list details:first-child summary { padding-top: 0; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; flex: none; font-size: 1.2rem; font-weight: 400; color: var(--brand); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { font-size: 1rem; margin-bottom: 20px; }
.contact-section { display: flex; justify-content: space-between; align-items: center; gap: 60px; background: var(--brand); padding: 50px 55px; border-radius: 12px; color: #fff; }
.contact-section .eyebrow { color: #c4d5c8; margin-bottom: 14px; }
.contact-section h2 { font-size: 2.35rem; max-width: 650px; }
.contact-section p:not(.eyebrow) { color: #d7e1d9; margin: 18px 0 0; max-width: 620px; font-size: 1rem; }
.contact-button { background: #f7f8ef; color: #254f40; flex-shrink: 0; }
.home-footer { display: grid; grid-template-columns: 1fr auto; align-items: start; gap: 24px; padding-block: 58px 24px; }
.home-footer .brand { font-size: 1.4rem; }
.home-footer .brand-mark { font-size: 2rem; }
.home-footer p { font-size: .8rem; margin: 10px 0 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 25px; padding-top: 8px; }
.footer-links a { color: var(--muted); font-size: .875rem; text-decoration: none; }
.home-footer .copyright { grid-column: 1 / -1; border-top: 1px solid var(--border); padding-top: 22px; margin-top: 7px; }
/* 中文使用宋体标题与自然字距，避免沿用英文的紧缩字距。 */
html[lang^="zh"] .hero h1 { font-size: clamp(2.7rem, 4.5vw, 4.1rem); line-height: 1.35; letter-spacing: 0; }
html[lang^="zh"] .hero h1 em { font-style: normal; }
html[lang^="zh"] .home h2 { letter-spacing: 0; line-height: 1.4; }
html[lang^="zh"] .eyebrow { letter-spacing: 2.3px; }
/* 原有文档路径继续使用窄栏阅读布局。 */
.page { max-width: var(--max-width); margin: 0 auto; padding: 34px 24px 60px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--border); padding-bottom: 25px; margin-bottom: 25px; }
.brand .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--brand); flex: none; }
nav.top a { font-size: .875rem; color: var(--muted); }
.page .lang-switch { margin-bottom: 35px; }
.page h1 { font: 400 2.2rem/1.3 Georgia, "Songti SC", "Songti TC", serif; margin-bottom: 14px; }
.page h2 { font-size: 1.15rem; margin: 30px 0 10px; }
.page .meta { font-size: .8rem; color: var(--muted); margin-bottom: 30px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 22px; }
.card h2:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.lang-block { display: none; }
.lang-block.active, .lang-block[data-lang="en"]:not([hidden]) { display: block; }
.lang-block[hidden] { display: none !important; }
footer.site { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border); }
footer.site p, footer.site a { font-size: .875rem; color: var(--muted); }
@media (max-width: 1050px) {
  .wrap { width: calc(100% - 64px); }
  .hero { gap: 32px; padding-block: 56px; }
  .hero h1 { font-size: 3.8rem; }
  .hero-art img { aspect-ratio: .95; border-top-left-radius: 75px; }
  .app-grid { gap: 16px; }
  .product-card { padding: 22px 20px 17px; }
  .interests-layout, .faq-section { gap: 60px; }
  .approach-grid { gap: 32px; }
  .contact-section { padding: 40px; gap: 32px; }
}
@media (max-width: 800px) {
  .home-header { flex-wrap: wrap; gap: 18px; padding-block: 23px; }
  .main-nav { order: 3; width: 100%; justify-content: center; gap: 32px; }
  .home-header .lang-switch { margin-left: auto; }
  .hero { grid-template-columns: 1fr; gap: 34px; padding-block: 45px; }
  .hero-copy { max-width: 560px; }
  .hero h1 { font-size: 4.5rem; }
  .hero-description { max-width: 540px; }
  .hero-art img { aspect-ratio: 1.6; border-radius: 60px 10px 10px 10px; }
  .brand-beliefs { grid-template-columns: 1fr; gap: 13px; }
  .brand-beliefs p { justify-content: flex-start; }
  .brand-beliefs p + p { border: 0; }
  .section { padding-block: 60px; }
  .section-heading { display: block; }
  .section-heading > p { max-width: 560px; margin-top: 18px; }
  .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .interests-layout, .faq-section { grid-template-columns: 1fr; gap: 30px; }
  .interests-intro h2, .interests-intro > p:not(.eyebrow) { max-width: 560px; }
  .margin-flower { display: none; }
  .interests-section { padding-block: 50px; }
  .approach-grid { gap: 24px; }
  .contact-section { display: block; }
  .contact-button { margin-top: 25px; }
  .home-footer { grid-template-columns: 1fr; }
  .faq-section { padding-block: 40px 60px; }
}
@media (max-width: 520px) {
  .wrap { width: calc(100% - 40px); }
  .brand { font-size: 1.5rem; }
  .brand-mark { font-size: 2.3rem; }
  .main-nav { justify-content: space-between; gap: 12px; }
  .main-nav a { font-size: .875rem; }
  .hero h1 { font-size: 3.4rem; letter-spacing: -2.5px; }
  html[lang^="zh"] .hero h1 { font-size: 2.65rem; }
  .hero .eyebrow { font-size: .75rem; letter-spacing: 1.1px; }
  .hero-description { font-size: 1rem; }
  .hero-art img { aspect-ratio: 1.15; border-top-left-radius: 50px; }
  .hero-art figcaption { justify-content: flex-start; font-size: .75rem; }
  .app-grid, .approach-grid { grid-template-columns: 1fr; }
  .product-card { padding: 24px; }
  .product-top { margin-bottom: 20px; }
  .approach-grid { gap: 30px; }
  .principle-number { margin-bottom: 12px; }
  .contact-section { padding: 32px 26px; }
  .contact-section h2 { font-size: 2rem; }
  .footer-links { flex-direction: column; gap: 12px; }
  .page h1 { font-size: 1.9rem; }
  .page header.site .brand { font-size: 1.35rem; }
}
@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; --bg: #15221c; --surface: #1c2a23; --text: #e7ece4; --muted: #a8b6ac; --brand: #b2cdb6; --brand-dark: #b2cdb6; --border: #35443a; --soft: #202f26; --accent: #e8a080; }
  .button.primary { color: #17281e; }
  .button.primary:hover { background: #cee0cf; }
  .product-card { --tint: #30443a; --ink: #a7c7b2; }
  .product-card.coffee { --tint: #40392c; --ink: #d6ba90; }
  .product-card.fishing { --tint: #2d3e48; --ink: #a9c9da; }
  .product-card.perfume { --tint: #44343f; --ink: #d7b2cc; }
  .product-card.sourdough { --tint: #443b28; --ink: #d9c088; }
  .product-card.bonsai { --tint: #37402c; --ink: #c1cf9d; }
  .badge.developing { color: #bed5c3; background: #30443a; }
  .contact-section { background: #2a4a39; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .button { transition: none; } .button:hover { transform: none; } }

/* 产品名称链接保持原有卡片标题样式。 */
.product-title-link { color: inherit; text-decoration: none; }
.product-title-link:hover { text-decoration: underline; }
.product-title-link small { display: block; margin-top: 4px; font: 500 .72rem/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; letter-spacing: 0; color: var(--muted); }