:root {
  color: #30231c;
  background: #f7f3ec;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 92% 0, var(--theme-wash), transparent 32rem), #f7f3ec; color: #30231c; }
a { color: inherit; }
img { display: block; max-width: 100%; }

.public-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  padding: 12px max(28px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(95, 69, 51, .12);
  background: rgba(250, 247, 241, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.public-brand img { width: 148px; height: 42px; object-fit: contain; }
.public-header nav, .public-footer nav { display: flex; align-items: center; gap: 24px; }
.public-header nav a, .public-footer a { color: #6f5849; font-size: 14px; text-decoration: none; }
.public-header nav a:hover, .public-footer a:hover { color: var(--theme-accent); }
.public-header nav a[aria-current="page"] { color: var(--theme-accent); font-weight: 700; }

main { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.kicker, .section-heading > p, .bottom-cta > p { margin: 0 0 13px; color: var(--theme-accent); font: 700 12px/1.2 Arial, sans-serif; letter-spacing: .14em; }

.center-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: 58px;
  min-height: 560px;
  padding: 62px 0 54px;
}

.center-hero h1, .detail-hero h1 {
  max-width: 760px;
  margin: 0;
  color: #34251d;
  font-family: "Noto Serif SC", "Songti SC", SimSun, serif;
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.04em;
}

.center-hero > div > p:not(.kicker), .detail-hero-copy > p:not(.kicker) { max-width: 680px; margin: 24px 0; color: #715e51; font-size: 18px; line-height: 1.9; }
.center-frame-preview {
  position: relative;
  overflow: hidden;
  min-height: 550px;
  border: 1px solid rgba(107, 77, 55, .1);
  border-radius: 38px;
  background:
    radial-gradient(circle at 68% 32%, rgba(255,255,255,.96), rgba(255,255,255,.35) 34%, transparent 58%),
    linear-gradient(145deg, #eee4d8, #fbf8f2 56%, #e9ddd0);
  box-shadow: 0 30px 70px rgba(63, 43, 30, .15);
  transition: background 260ms ease, box-shadow 260ms ease;
}
.center-frame-preview.is-lit {
  background:
    radial-gradient(circle at 61% 43%, rgba(255,224,157,.38), transparent 38%),
    linear-gradient(145deg, #d7c1a8, #f8ead2 54%, #bba184);
  box-shadow: 0 34px 78px rgba(73, 46, 25, .2);
}
.center-frame-toolbar { position: absolute; z-index: 8; top: 20px; left: 50%; display: flex; gap: 4px; padding: 4px; border: 1px solid rgba(100,70,48,.12); border-radius: 999px; background: rgba(255,252,247,.88); box-shadow: 0 8px 24px rgba(74,49,31,.08); transform: translateX(-50%); backdrop-filter: blur(12px); }
.center-frame-toolbar button { min-width: 74px; height: 32px; padding: 0 13px; border: 0; border-radius: 999px; color: #745e4e; background: transparent; font: 700 12px/1 "Microsoft YaHei", sans-serif; cursor: pointer; }
.center-frame-toolbar button.is-active { color: #fff; background: #5b4131; box-shadow: 0 5px 12px rgba(68,43,27,.2); }
.center-frame-stage { position: absolute; inset: 64px 0 44px; display: grid; place-items: center; perspective: 1300px; perspective-origin: 54% 42%; }
.center-frame-product { position: relative; z-index: 2; width: 62%; aspect-ratio: 580 / 759; transform: rotateX(1deg) rotateY(-7deg) translateX(4%); transform-style: preserve-3d; }
.center-frame-face { position: absolute; inset: 0; transform: translateZ(17px); transform-style: preserve-3d; }
.center-frame-artwork { position: absolute; inset: 6.6% 8.3% 6.3%; overflow: hidden; background: #e9e2d8; transition: filter 260ms ease, box-shadow 260ms ease; }
.center-frame-artwork > img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 42%; }
.center-frame-light, .center-frame-acrylic { position: absolute; inset: 0; pointer-events: none; }
.center-frame-light { opacity: 0; background: radial-gradient(circle at 50% 42%, rgba(255,247,216,.78), rgba(255,211,124,.2) 52%, transparent 78%); mix-blend-mode: screen; transition: opacity 260ms ease; }
.center-frame-acrylic { background: linear-gradient(118deg, rgba(255,255,255,.26), transparent 24% 68%, rgba(255,255,255,.15)); box-shadow: inset 0 0 22px rgba(255,255,255,.22); }
.center-frame-preview.is-lit .center-frame-artwork { filter: brightness(1.12) saturate(1.05) contrast(1.02); box-shadow: 0 0 30px rgba(255,209,122,.55), inset 0 0 18px rgba(255,249,224,.5); }
.center-frame-preview.is-lit .center-frame-light { opacity: .72; }
.center-frame-wood { position: absolute; z-index: 3; inset: 0; width: 100%; height: 100%; object-fit: fill; filter: drop-shadow(13px 18px 18px rgba(52,34,22,.17)); transform: translateZ(18px); }
.center-frame-depth { position: absolute; z-index: 0; top: 2.2%; right: -8.5%; width: 11.5%; height: 95.5%; border-radius: 0 7px 7px 0; background: linear-gradient(90deg, #a67751, #6f472d 48%, #3c281d); box-shadow: inset 7px 0 10px rgba(255,220,176,.14), 18px 18px 24px rgba(57,37,24,.13); clip-path: polygon(0 0, 100% 3.2%, 100% 96.8%, 0 100%); transform: translateZ(-16px); }
.center-frame-shadow { position: absolute; z-index: 1; right: 13%; bottom: 23px; width: 66%; height: 34px; border-radius: 50%; background: rgba(67,43,28,.18); filter: blur(14px); transform: rotate(-1deg); }
.text-link { display: inline-flex; gap: 8px; align-items: center; color: var(--theme-accent); font-weight: 700; text-decoration: none; }

.theme-center, .content-section { padding: 76px 0; }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading h2, .presentation h2, .bottom-cta h2 { margin: 0; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: clamp(30px, 4vw, 46px); line-height: 1.25; }
.section-heading > span { display: block; margin-top: 12px; color: #826d5f; font-size: 14px; line-height: 1.7; }

.theme-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.theme-card { overflow: hidden; min-width: 0; border: 1px solid rgba(96, 71, 53, .1); border-radius: 28px; background: rgba(255, 252, 247, .9); box-shadow: 0 18px 45px rgba(70, 48, 34, .08); }
.theme-card-media { display: block; padding: 18px; background: linear-gradient(145deg, var(--card-wash), #fbf7ef); }
.theme-card-media img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 18px; background: #f4ede4; }
.theme-card-copy { padding: 25px; }
.theme-card-copy > span { color: var(--card-accent); font: 700 10px/1.2 Arial, sans-serif; letter-spacing: .13em; }
.theme-card h2 { margin: 8px 0 12px; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: 25px; }
.theme-card h2 a, .theme-card-footer a { text-decoration: none; }
.theme-card p { min-height: 78px; margin: 0; color: #725e51; font-size: 14px; line-height: 1.75; }
.theme-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 20px; padding-top: 18px; border-top: 1px solid rgba(96, 71, 53, .1); }
.theme-card-footer small { color: #7f6959; }
.theme-card-footer a { color: var(--card-accent); font-weight: 700; }
.center-note { margin: 0 0 82px; padding: 28px 34px; border-left: 4px solid var(--theme-accent); border-radius: 8px 24px 24px 8px; background: rgba(255,255,255,.62); color: #6b584c; line-height: 1.9; }
.center-note p { margin: 0; }

.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .8fr);
  gap: 68px;
  align-items: center;
  min-height: 560px;
  padding: 52px 0 72px;
}
.about-hero h1 { margin: 0; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: clamp(42px, 5vw, 68px); line-height: 1.16; letter-spacing: -.04em; }
.about-hero > div > p:not(.kicker) { max-width: 720px; margin: 24px 0; color: #715e51; font-size: 18px; line-height: 1.9; }
.about-hero figure { margin: 0; }
.about-hero figure img { width: 100%; height: auto; object-fit: contain; border: 5px solid rgba(255,252,247,.9); border-radius: 20px; box-shadow: 0 12px 30px rgba(64,44,31,.09); }
.about-hero figcaption { margin-top: 14px; color: #8b7667; font-size: 12px; text-align: center; }
.about-answer { margin: 4px 0 34px; padding: 38px 42px; border-left: 4px solid var(--theme-accent); border-radius: 10px 30px 30px 10px; background: rgba(255,255,255,.68); box-shadow: 0 18px 42px rgba(70,48,34,.07); }
.about-answer > p:first-child { margin: 0 0 10px; color: var(--theme-accent); font: 700 11px/1.2 Arial, sans-serif; letter-spacing: .14em; }
.about-answer h2 { margin: 0; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: clamp(28px, 3vw, 40px); }
.about-answer > p:last-child { max-width: 880px; margin: 16px 0 0; color: #685448; font-size: 16px; line-height: 1.9; }
.about-answer a, .about-theme-index a { color: var(--theme-accent); font-weight: 700; }
.about-definitions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.about-definitions article { padding: 38px; border: 1px solid rgba(91,65,47,.1); border-radius: 30px; background: rgba(255,255,255,.65); }
.about-definitions h2 { margin: 0 0 18px; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: clamp(28px, 3vw, 40px); }
.about-definitions article > p:last-child, .materials-privacy > article > p { margin: 0; color: #6e594c; font-size: 15px; line-height: 1.9; }
.about-theme-index { margin: -12px 0 24px; }
.about-theme-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.about-theme-grid > a { display: flex; min-width: 0; gap: 16px; align-items: center; padding: 16px; border: 1px solid rgba(91,65,47,.1); border-radius: 20px; background: rgba(255,255,255,.68); text-decoration: none; }
.about-theme-grid img { flex: 0 0 76px; width: 76px; height: 76px; border-radius: 14px; object-fit: cover; }
.about-theme-grid span, .about-theme-grid b, .about-theme-grid small { display: block; min-width: 0; }
.about-theme-grid b { margin-bottom: 7px; font-size: 17px; }
.about-theme-grid small { display: -webkit-box; overflow: hidden; color: #806b5d; font-size: 12px; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }

.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; padding: 28px 0 0; color: #8a7567; font-size: 13px; }
.breadcrumbs a { text-decoration: none; }
.breadcrumbs a:hover { color: var(--theme-accent); }

.detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(340px, .72fr);
  gap: 68px;
  align-items: center;
  min-height: 580px;
  padding: 52px 0 68px;
}
.detail-hero h1 { font-size: clamp(40px, 4.7vw, 64px); }
.detail-hero figure { margin: 0; }
.hero-image { display: grid; min-height: 420px; place-items: center; padding: 28px; border: 1px solid rgba(97, 69, 49, .12); border-radius: 42% 42% 28px 28px; background: linear-gradient(160deg, var(--theme-wash), #fffaf2); box-shadow: 0 30px 70px rgba(64,44,31,.14); }
.hero-image img { display: block; width: auto; max-width: 100%; height: auto; max-height: 420px; object-fit: contain; border-radius: 24px; }
.detail-hero figcaption { margin-top: 14px; color: #8b7667; font-size: 12px; text-align: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin: 30px 0 14px; }
.hero-actions > span { color: #6f5849; font-size: 14px; }
.detail-hero-copy > small { color: #987e6c; font-size: 12px; }
.primary-cta, .secondary-cta { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 26px; border-radius: 999px; font-weight: 700; text-decoration: none; }
.primary-cta { color: white; background: var(--theme-accent); box-shadow: 0 12px 24px color-mix(in srgb, var(--theme-accent) 28%, transparent); }
.secondary-cta { border: 1px solid rgba(82,59,43,.22); background: rgba(255,255,255,.68); }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.feature-grid article { min-height: 230px; padding: 28px; border-radius: 24px; background: rgba(255,255,255,.7); box-shadow: inset 0 0 0 1px rgba(91,65,47,.09); }
.feature-grid article > b { color: var(--theme-accent); font: 700 12px/1 Arial, sans-serif; }
.feature-grid h3 { margin: 34px 0 12px; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: 23px; }
.feature-grid p, .steps p, .presentation p, .faq-list p { color: #745f52; font-size: 15px; line-height: 1.85; }

.materials-privacy { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr); gap: 24px; }
.materials-privacy > article { min-width: 0; padding: 34px; border: 1px solid rgba(91,65,47,.1); border-radius: 28px; background: rgba(255,255,255,.66); }
.materials-privacy .section-heading { margin-bottom: 24px; }
.materials-privacy .section-heading h2 { font-size: clamp(26px, 3vw, 38px); }
.materials-privacy ul { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.materials-privacy li { position: relative; padding-left: 24px; color: #745f52; line-height: 1.75; }
.materials-privacy li::before { position: absolute; top: .68em; left: 2px; width: 8px; height: 8px; border-radius: 50%; background: var(--theme-accent); content: ""; }
.materials-privacy .privacy-note { background: var(--theme-wash); }
.materials-privacy .privacy-note > p { margin: 0; color: #654f42; font-size: 15px; line-height: 1.9; }

.split-section { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 70px; align-items: center; }
.audience-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.audience-list li { position: relative; padding: 18px 18px 18px 42px; border: 1px solid rgba(94,67,49,.1); border-radius: 16px; background: rgba(255,255,255,.54); line-height: 1.6; }
.audience-list li::before { position: absolute; top: 22px; left: 19px; width: 8px; height: 8px; border-radius: 50%; background: var(--theme-accent); content: ""; }
.split-section aside { padding: 34px; border-radius: 28px; background: var(--theme-accent); color: white; }
.split-section aside span { opacity: .72; font-size: 12px; letter-spacing: .12em; }
.split-section aside strong { display: block; margin: 14px 0; font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: 28px; }
.split-section aside p { margin: 0; opacity: .78; font-size: 13px; line-height: 1.8; }

.steps { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; counter-reset: steps; }
.steps li { display: grid; grid-template-columns: 110px 1fr; gap: 28px; align-items: start; padding: 26px 30px; border-top: 1px solid rgba(88,63,46,.13); }
.steps li > span { padding-top: 5px; color: var(--theme-accent); font: 700 11px/1.2 Arial, sans-serif; letter-spacing: .1em; }
.steps h3 { margin: 0; font-size: 20px; }
.steps p { margin: 8px 0 0; }

.presentation { display: grid; grid-template-columns: 1fr 420px; gap: 62px; align-items: center; margin: 40px 0; padding: 54px; border-radius: 38px; background: linear-gradient(140deg, #352820, color-mix(in srgb, var(--theme-accent) 48%, #352820)); color: white; }
.presentation p { color: rgba(255,255,255,.76); }
.presentation img { display: block; width: 100%; max-width: 100%; height: auto; object-fit: contain; }

.faq-list { border-top: 1px solid rgba(92,66,47,.14); }
.faq-list details { border-bottom: 1px solid rgba(92,66,47,.14); }
.faq-list summary { padding: 22px 4px; cursor: pointer; font-size: 18px; font-weight: 700; list-style-position: inside; }
.faq-list p { max-width: 820px; margin: -6px 0 22px 24px; }

.related-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.related-grid a { display: flex; gap: 18px; align-items: center; min-width: 0; padding: 16px; border: 1px solid rgba(91,65,47,.1); border-radius: 20px; background: rgba(255,255,255,.66); text-decoration: none; }
.related-grid img { flex: 0 0 78px; width: 78px; height: 78px; border-radius: 14px; object-fit: cover; background: var(--theme-wash); }
.related-grid span { min-width: 0; }
.related-grid b, .related-grid small { display: block; }
.related-grid b { margin-bottom: 7px; font-size: 17px; }
.related-grid small { overflow: hidden; color: #846f61; text-overflow: ellipsis; white-space: nowrap; }

.bottom-cta { margin: 40px 0 90px; padding: 70px 32px; border-radius: 36px; background: var(--theme-wash); text-align: center; }
.bottom-cta h2 { max-width: 680px; margin: 0 auto; }
.bottom-cta > div { display: flex; justify-content: center; gap: 14px; margin-top: 28px; }

.public-footer { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 34px max(28px, calc((100vw - 1180px) / 2)); border-top: 1px solid rgba(91,65,47,.12); background: #efe8dd; }
.public-footer strong, .public-footer span { display: block; }
.public-footer span { margin-top: 5px; color: #7b675a; font-size: 12px; }

@supports not (color: color-mix(in srgb, #000 50%, #fff)) {
  .primary-cta { box-shadow: 0 12px 24px rgba(76, 53, 38, .18); }
  .presentation { background: #3d2f27; }
}

@media (max-width: 900px) {
  main { width: min(100% - 36px, 760px); }
  .center-hero, .detail-hero, .about-hero, .split-section, .presentation, .materials-privacy, .about-definitions { grid-template-columns: 1fr; }
  .center-hero { min-height: 0; padding-top: 52px; }
  .center-frame-preview { width: min(100%, 620px); min-height: 550px; }
  .theme-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 0; }
  .split-section aside { max-width: 440px; }
  .presentation { padding: 42px; }
  .related-grid { grid-template-columns: 1fr; }
  .about-theme-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .public-footer { align-items: flex-start; }
  .public-footer nav { flex-wrap: wrap; justify-content: flex-end; }
}

@media (max-width: 600px) {
  .public-header { min-height: 62px; padding: 10px 18px; }
  .public-brand img { width: 116px; height: 34px; }
  .public-header nav { gap: 14px; }
  .public-header nav a { font-size: 12px; }
  main { width: min(100% - 28px, 460px); }
  .center-hero { gap: 32px; padding: 42px 0; }
  .center-hero h1, .detail-hero h1 { font-size: 36px; }
  .about-hero { gap: 34px; min-height: 0; padding: 42px 0 54px; }
  .about-hero h1 { font-size: 36px; }
  .about-hero > div > p:not(.kicker) { font-size: 16px; line-height: 1.8; }
  .about-answer { padding: 30px 24px; }
  .about-theme-grid { grid-template-columns: 1fr; }
  .center-hero > div > p:not(.kicker), .detail-hero-copy > p:not(.kicker) { font-size: 16px; line-height: 1.8; }
  .center-frame-preview { min-height: 500px; }
  .center-frame-product { width: 68%; transform: rotateX(1deg) rotateY(-6deg) translateX(3%); }
  .center-frame-stage { inset: 62px 0 34px; }
  .theme-center, .content-section { padding: 52px 0; }
  .theme-grid { grid-template-columns: 1fr; }
  .theme-card p { min-height: 0; }
  .breadcrumbs { font-size: 12px; }
  .detail-hero { grid-template-columns: minmax(0, 1fr); gap: 38px; min-height: 0; padding: 42px 0 54px; }
  .hero-image { min-height: 320px; padding: 18px; }
  .hero-image img { max-height: 320px; }
  .audience-list { grid-template-columns: 1fr; }
  .steps li { grid-template-columns: 1fr; gap: 10px; padding: 22px 4px; }
  .presentation { gap: 30px; margin: 20px 0; padding: 30px 22px; border-radius: 26px; }
  .materials-privacy > article { padding: 26px 22px; }
  .related-grid img { flex-basis: 68px; width: 68px; height: 68px; }
  .bottom-cta { margin-bottom: 60px; padding: 50px 20px; }
  .bottom-cta > div { flex-direction: column; }
  .public-footer { display: block; padding: 28px 20px; }
  .public-footer nav { display: grid; gap: 10px; margin-top: 24px; }
}

@media (max-width: 370px) {
  .public-header nav a:first-child { display: none; }
  main { width: calc(100% - 22px); }
  .center-hero h1, .detail-hero h1, .about-hero h1 { font-size: 32px; }
  .center-frame-preview { min-height: 470px; }
  .center-frame-product { width: 70%; }
  .theme-card-copy { padding: 21px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .primary-cta, .secondary-cta { width: 100%; }
}