:root {
  color-scheme: light;
  --paper: #f5f1e8;
  --white: #fffdf7;
  --ink: #183b31;
  --text: #2f443b;
  --muted: #64736a;
  --line: #d7ddd0;
  --green-soft: #e6ebde;
  --coral: #dc7859;
  --coral-soft: #f7e3d7;
  --gutter: clamp(20px, 4.8vw, 64px);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-text-size-adjust: 100%;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--text); font-size: 16px; line-height: 1.8; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; text-underline-offset: 4px; }
img, svg { display: block; max-width: 100%; }
button, summary { cursor: pointer; }
button, input { min-width: 0; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid #a94d31; outline-offset: 5px; }
[hidden] { display: none !important; }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3, h4 { color: var(--ink); }
ul, ol { margin: 0; padding: 0; }
.container { width: 100%; max-width: 1328px; margin-inline: auto; padding-left: max(var(--gutter), env(safe-area-inset-left)); padding-right: max(var(--gutter), env(safe-area-inset-right)); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; top: 12px; left: 16px; z-index: 20; transform: translateY(-160%); background: var(--ink); color: white; padding: 10px 20px; }
.skip-link:focus { transform: translateY(0); }
.site-header { padding-top: env(safe-area-inset-top); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 104px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; color: var(--ink); text-decoration: none; }
.brand img { width: 38px; height: 38px; }
.brand strong { display: block; font-size: 19px; line-height: 1.25; letter-spacing: .13em; }
.brand small { display: block; font-size: 12px; letter-spacing: .22em; line-height: 1.8; }
.site-nav { display: flex; flex-wrap: wrap; gap: clamp(18px, 3vw, 36px); align-items: center; font-size: 14px; }
.site-nav a { text-decoration: none; padding-block: 7px; }
.site-nav a:hover { text-decoration: underline; }
.site-nav .nav-purchase { display: flex; align-items: center; gap: 10px; }
.nav-purchase::after { content: "↗"; font-size: 18px; }
.hero { padding-top: clamp(48px, 7.2vw, 100px); padding-bottom: 64px; }
.hero-grid { display: grid; grid-template-columns: 1.16fr 1fr; gap: clamp(36px, 6vw, 88px); align-items: center; }
.hero-copy, .hero-visual { min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.eyebrow::before { content: ""; width: 7px; height: 7px; background: var(--coral); border-radius: 50%; flex: 0 0 auto; }
.hero h1 { margin-top: 23px; font-size: clamp(34px, 4.65vw, 62px); line-height: 1.3; font-weight: 750; letter-spacing: -.045em; }
.hero h1 span { display: block; }
.hero-intro { max-width: 535px; margin-top: 25px; font-size: 17px; color: #56675d; line-height: 1.95; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; gap: 18px 25px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 17px; min-height: 48px; border: 1px solid var(--ink); border-radius: 4px; padding: 10px 20px; background: var(--ink); color: var(--white); font-size: 14px; font-weight: 650; text-decoration: none; line-height: 1.65; }
.button:hover { background: #285545; border-color: #285545; }
.button .arrow { font-size: 20px; font-weight: 400; line-height: 1; }
.text-link { font-size: 14px; text-decoration-thickness: 1px; }
.price-note { margin-top: 20px; color: var(--muted); font-size: 12px; }
.price-note strong { color: var(--ink); font-weight: 650; }
.hero-visual { position: relative; isolation: isolate; padding: 34px 14px 26px; }
.hero-visual::before { content: ""; position: absolute; inset: 4px 0 25px; border-radius: 48% 48% 8px 8px; background: #e6eadf; z-index: -1; }
.visual-topline { display: flex; align-items: center; justify-content: space-between; margin: 0 20px 18px; color: #6a796d; font-size: 11px; letter-spacing: .14em; }
.small-cross { width: 23px; height: 23px; position: relative; }
.small-cross::before, .small-cross::after { content: ""; position: absolute; background: var(--coral); width: 2px; height: 23px; left: 10px; top: 0; }
.small-cross::after { transform: rotate(90deg); }
.paper-stack { position: relative; padding: 0 22px 26px 0; }
.paper-stack::before { content: ""; position: absolute; inset: 15px 4px 12px 14px; background: #d2d9ca; border: 1px solid #c3cebc; transform: rotate(3deg); border-radius: 4px; }
.result-paper { position: relative; min-height: 320px; background: var(--white); padding: 30px 30px 24px; border: 1px solid #d3dacb; border-radius: 4px; box-shadow: 0 14px 34px #203d2810; transform: rotate(-2deg); }
.paper-meta { display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 13px; color: var(--muted); font-size: 10px; letter-spacing: .1em; }
.result-paper h2 { margin-top: 22px; font-size: clamp(24px, 2.6vw, 32px); line-height: 1.4; letter-spacing: -.03em; }
.paper-subtitle { margin-top: 5px; color: var(--muted); font-size: 12px; }
.paper-list { list-style: none; margin-top: 23px; display: grid; gap: 0; }
.paper-list li { display: flex; gap: 12px; align-items: center; font-size: 13px; padding: 11px 0; border-bottom: 1px solid #e8e9df; }
.paper-list svg { flex: 0 0 17px; width: 17px; height: 17px; color: #5d7a5b; }
.paper-foot { margin-top: 18px; display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--muted); font-size: 10px; }
.paper-stamp { color: #8e4e35; background: var(--coral-soft); padding: 4px 9px; border-radius: 2px; font-size: 11px; transform: rotate(-4deg); }
.small-swatch { position: absolute; right: 0; bottom: -5px; transform: rotate(7deg); width: 102px; height: 98px; background: #f8e6d6; border: 1px solid #dcbca4; border-radius: 4px; padding: 11px; box-shadow: 0 6px 15px #3347320c; }
.bead-motif { display: grid; grid-template-columns: repeat(6, 1fr); gap: 3px; width: 100%; height: 100%; }
.bead-motif i { border-radius: 2px; background: #ead1b4; }
.bead-motif i:nth-child(6n + 2), .bead-motif i:nth-child(6n + 5), .bead-motif i:nth-child(15), .bead-motif i:nth-child(16), .bead-motif i:nth-child(21), .bead-motif i:nth-child(22) { background: #40634c; }
.bead-motif i:nth-child(9), .bead-motif i:nth-child(10), .bead-motif i:nth-child(27), .bead-motif i:nth-child(28) { background: var(--coral); }
.visual-caption { margin-top: 15px; color: var(--muted); font-size: 11px; text-align: center; }
.hero-bottom { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 65px; padding-top: 24px; border-top: 1px solid var(--line); gap: 24px; }
.hero-bottom p { display: flex; gap: 12px; align-items: baseline; color: var(--muted); font-size: 13px; }
.hero-bottom b { color: var(--ink); font-size: 14px; font-weight: 600; white-space: nowrap; }
.section { padding-block: clamp(52px, 7vw, 88px); }
.catalog { background: var(--white); border-block: 1px solid var(--line); }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; }
.section-kicker { display: flex; gap: 12px; color: var(--muted); font-size: 12px; letter-spacing: .06em; }
.section-kicker span { color: #a66044; font-weight: 700; }
.section-heading h2, .section-title { margin-top: 14px; font-size: clamp(27px, 3.2vw, 40px); font-weight: 650; line-height: 1.45; letter-spacing: -.04em; }
.section-description { max-width: 320px; color: var(--muted); font-size: 14px; }
.filter-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 32px; margin-bottom: 28px; }
.filter-controls { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-controls button { min-height: 42px; padding: 7px 18px; border-radius: 22px; border: 1px solid var(--line); background: transparent; color: var(--text); font-size: 14px; }
.filter-controls button:hover { border-color: #7d9784; }
.filter-controls button.selected, .filter-controls button[aria-pressed="true"] { background: var(--ink); color: var(--white); border-color: var(--ink); }
.filter-status { color: var(--muted); font-size: 12px; }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.product-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-radius: 6px; background: var(--white); padding: clamp(22px, 2.7vw, 35px); }
.product-top { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.product-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 11px; background: var(--green-soft); color: var(--ink); }
.product-icon svg { width: 27px; height: 27px; }
.product-card[data-tone="coral"] .product-icon { background: var(--coral-soft); color: #9f5235; }
.product-tag { color: var(--muted); font-size: 12px; letter-spacing: .07em; }
.product-card h3 { margin-top: 24px; font-size: clamp(20px, 1.9vw, 24px); line-height: 1.5; letter-spacing: -.025em; font-weight: 650; overflow-wrap: anywhere; }
.product-description { margin-top: 14px; color: #5a695e; font-size: 14px; line-height: 1.95; }
.product-details { margin-top: 22px; border-top: 1px solid var(--line); }
.product-details summary { color: var(--ink); font-size: 13px; padding: 14px 0; list-style-position: inside; }
.product-details summary::marker, .faq-item summary::marker { color: #8a9d85; font-size: .75em; }
.product-details[open] summary { margin-bottom: 3px; }
.details-body { padding-bottom: 17px; }
.details-body h4 { font-size: 12px; font-weight: 650; margin-top: 14px; letter-spacing: .05em; }
.details-body ul { margin-top: 6px; padding-left: 18px; color: var(--muted); font-size: 13px; line-height: 1.85; }
.details-body p { margin-top: 6px; color: var(--muted); font-size: 13px; line-height: 1.9; }
.product-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 17px; padding-top: 22px; margin-top: auto; }
.product-price { display: flex; align-items: baseline; gap: 3px; color: var(--ink); line-height: 1.2; }
.product-price .currency { font-size: 16px; }
.product-price strong { font-size: 33px; font-weight: 550; letter-spacing: -.07em; }
.product-price small { margin-left: 9px; font-size: 11px; letter-spacing: 0; color: var(--muted); }
.buy-button { min-height: 44px; padding: 9px 15px; font-size: 12px; gap: 12px; }
.filter-empty { padding: 28px 0; color: var(--muted); }
.catalog-footnote { margin-top: 24px; color: var(--muted); font-size: 12px; }
.how-heading { max-width: 650px; }
.how-description { margin-top: 17px; max-width: 580px; color: var(--muted); font-size: 15px; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); list-style: none; margin-top: 42px; gap: clamp(22px, 4vw, 60px); }
.step { border-top: 1px solid #b8c5b5; padding-top: 21px; min-width: 0; }
.step-number { display: block; color: #ad684c; font-size: 13px; letter-spacing: .1em; }
.step h3 { margin-top: 20px; font-size: 20px; font-weight: 650; line-height: 1.5; }
.step p { margin-top: 12px; font-size: 14px; color: var(--muted); line-height: 1.95; }
.before-buy { background: #e8ede2; border-block: 1px solid #d6decd; }
.conditions-layout { display: grid; grid-template-columns: .85fr 1.4fr; gap: clamp(35px, 7vw, 100px); align-items: start; }
.conditions-intro { position: sticky; top: 24px; min-width: 0; }
.conditions-intro p { margin-top: 20px; color: #60715e; font-size: 14px; max-width: 330px; }
.conditions-intro .text-link { display: inline-block; margin-top: 22px; color: var(--ink); }
.faq-list { min-width: 0; border-top: 1px solid #bdcbb7; }
.faq-item { border-bottom: 1px solid #bdcbb7; }
.faq-item summary { color: var(--ink); padding: 20px 0; font-size: 16px; font-weight: 550; list-style-position: inside; }
.faq-item p { color: #586d55; font-size: 14px; padding: 0 0 23px 15px; line-height: 1.95; }
.platform-section { padding-block: 56px; }
.platform-inner { display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.platform-copy h2 { font-size: clamp(22px, 2.5vw, 30px); font-weight: 650; letter-spacing: -.02em; }
.platform-copy p { margin-top: 12px; color: var(--muted); font-size: 13px; max-width: 690px; }
.platform-label { display: inline-flex; align-items: center; gap: 9px; padding: 8px 13px; font-size: 12px; border: 1px solid #bfccb9; border-radius: 3px; color: var(--ink); margin-bottom: 17px; }
.platform-label::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: #54794d; }
.platform-inner .button { flex: 0 0 auto; }
.site-footer { border-top: 1px solid var(--line); padding-top: 30px; padding-bottom: max(28px, env(safe-area-inset-bottom)); }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; align-items: center; gap: 20px; color: var(--muted); font-size: 11px; }
.footer-brand { font-weight: 600; color: var(--ink); letter-spacing: .13em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .hero h1 { font-size: clamp(34px, 4.55vw, 44px); }
  .hero-intro { font-size: 15px; }
  .result-paper { padding: 24px 22px; min-height: 300px; }
  .hero-bottom p { display: block; }
  .hero-bottom b { display: block; margin-bottom: 4px; }
  .product-footer { gap: 15px; }
  .buy-button { width: 100%; }
  .conditions-layout { grid-template-columns: .85fr 1.2fr; gap: 40px; }
}

@media (max-width: 720px) {
  .header-inner { min-height: 88px; gap: 18px; }
  .brand img { width: 33px; height: 33px; }
  .brand strong { font-size: 16px; }
  .brand small { font-size: 10px; }
  .site-nav { gap: 17px; font-size: 12px; }
  .hero { padding-top: 46px; padding-bottom: 36px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: clamp(34px, 7.5vw, 52px); line-height: 1.35; margin-top: 18px; letter-spacing: -.04em; }
  .hero-intro { margin-top: 20px; max-width: 540px; font-size: 15px; }
  .hero-visual { max-width: 460px; width: 100%; margin-inline: auto; padding-top: 24px; }
  .result-paper { min-height: 290px; padding: 25px 27px; }
  .result-paper h2 { font-size: 30px; }
  .hero-bottom { margin-top: 33px; gap: 15px; padding-top: 20px; }
  .hero-bottom p { font-size: 11px; }
  .hero-bottom b { font-size: 12px; white-space: normal; }
  .section-heading { display: block; }
  .section-description { margin-top: 15px; max-width: 540px; font-size: 13px; }
  .product-grid { grid-template-columns: 1fr; gap: 18px; }
  .product-card { padding: 26px; }
  .product-card h3 { font-size: 22px; }
  .product-description { font-size: 14px; }
  .product-footer { flex-wrap: nowrap; }
  .buy-button { width: auto; }
  .steps { grid-template-columns: 1fr; gap: 28px; margin-top: 33px; }
  .step { display: grid; grid-template-columns: 40px 1fr; column-gap: 12px; padding-top: 18px; }
  .step-number { grid-row: 1 / 3; padding-top: 2px; }
  .step h3 { margin-top: 0; font-size: 18px; }
  .step p { margin-top: 9px; }
  .conditions-layout { grid-template-columns: 1fr; gap: 32px; }
  .conditions-intro { position: static; }
  .conditions-intro p { max-width: 540px; margin-top: 15px; }
  .conditions-intro .text-link { margin-top: 16px; }
  .faq-item summary { font-size: 15px; }
  .platform-inner { display: block; }
  .platform-inner .button { margin-top: 25px; }
  .footer-inner { align-items: flex-start; }
}

@media (max-width: 420px) {
  .header-inner { flex-wrap: wrap; padding-block: 19px 14px; gap: 15px; }
  .site-nav { width: 100%; justify-content: space-between; font-size: 12px; gap: 10px; }
  .brand img { width: 31px; height: 31px; }
  .hero h1 { font-size: 34px; }
  .hero { padding-top: 32px; }
  .hero-intro { font-size: 14px; line-height: 1.85; margin-top: 16px; }
  .eyebrow { font-size: 11px; gap: 8px; }
  .hero-actions { gap: 16px 20px; margin-top: 24px; }
  .hero-actions .button { width: 100%; justify-content: space-between; }
  .hero-actions .text-link { font-size: 13px; }
  .price-note { font-size: 11px; }
  .hero-visual { padding: 22px 0 12px; }
  .visual-topline { margin-inline: 15px; }
  .result-paper { padding: 23px 21px; min-height: 285px; }
  .result-paper h2 { font-size: 26px; }
  .paper-list li { font-size: 12px; }
  .paper-foot { font-size: 9px; gap: 8px; }
  .paper-stamp { font-size: 10px; }
  .small-swatch { width: 78px; height: 78px; right: 2px; padding: 9px; }
  .hero-bottom { grid-template-columns: 1fr; gap: 11px; }
  .hero-bottom p { display: flex; align-items: baseline; gap: 15px; font-size: 12px; }
  .hero-bottom b { margin: 0; min-width: 84px; }
  .section-heading h2, .section-title { font-size: 27px; }
  .filter-row { gap: 13px; margin-top: 25px; margin-bottom: 22px; }
  .filter-controls { gap: 6px; }
  .filter-controls button { padding: 7px 12px; font-size: 12px; min-height: 40px; }
  .product-card { padding: 22px 20px; }
  .product-card h3 { font-size: 21px; margin-top: 19px; }
  .product-description { font-size: 13px; }
  .product-footer { flex-wrap: wrap; padding-top: 18px; }
  .buy-button { width: 100%; justify-content: space-between; }
  .product-price strong { font-size: 31px; }
  .product-price small { font-size: 11px; }
  .platform-section { padding-block: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media print {
  body { background: white; }
  .hero-visual, .filter-controls, .hero-actions, .site-nav, .footer-links { display: none !important; }
  .hero-grid, .conditions-layout { display: block; }
  .hero { padding-top: 25px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-card { break-inside: avoid; }
  .product-details:not([open]) .details-body { display: block; }
  .button { color: black; border-color: black; background: white; }
  .conditions-intro { position: static; }
}