@font-face {
  font-family: 'MiSans';
  src: url('/assets/fonts/MiSans-Normal.woff2') format('woff2');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --purple: #70539a;
  --purple-dark: #2b203b;
  --purple-ink: #21192b;
  --lavender: #eee8f2;
  --lavender-2: #f7f3f7;
  --warm: #d6b17a;
  --ink: #211e25;
  --muted: #6d6671;
  --line: #ded7e1;
  --paper: #fbfaf8;
  --white: #fff;
  --green: #24745e;
  --shadow: 0 24px 80px rgba(61, 42, 105, .13);
  --radius: 26px;
  --shell: min(1180px, calc(100vw - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: 'MiSans', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif; font-synthesis: weight; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -.035em; }
h1, h2 { font-weight: 600; }
h1 { font-size: clamp(3rem, 7vw, 6.6rem); }
h2 { font-size: clamp(2rem, 4vw, 4.2rem); }
h3 { font-size: 1.25rem; }
.shell { width: var(--shell); margin-inline: auto; }
.section { padding: 112px 0; }
.eyebrow { margin-bottom: 22px; color: var(--purple); font-size: .76rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow.light { color: #d7cdf5; }
.sr-only { 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: fixed; top: 10px; left: 10px; z-index: 100; padding: 10px 16px; transform: translateY(-150%); background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 2px solid var(--white); outline-offset: 2px; box-shadow: 0 0 0 5px var(--purple) !important; }

.site-header { position: sticky; top: 0; z-index: 50; height: 84px; background: rgba(251,250,248,.9); border-bottom: 1px solid rgba(221,216,228,.8); backdrop-filter: blur(18px); }
.nav-shell { width: min(1320px, calc(100vw - 40px)); height: 100%; margin: auto; display: grid; grid-template-columns: 190px 1fr auto; align-items: center; gap: 34px; }
.brand { width: 154px; overflow: hidden; }
.brand img { width: 154px; height: 66px; object-fit: contain; }
.site-nav { display: flex; justify-content: center; gap: clamp(18px, 3vw, 44px); font-size: .94rem; }
.site-nav a { position: relative; padding: 30px 0; color: #423d49; }
.site-nav a::after { content: ""; position: absolute; left: 50%; bottom: 20px; width: 0; height: 2px; background: var(--purple); transition: .25s ease; }
.site-nav a:hover::after, .site-nav a[aria-current="page"]::after { left: 0; width: 100%; }
.header-cta { padding: 10px 18px; color: white; background: var(--purple); border-radius: 99px; font-weight: 600; font-size: .88rem; }
.menu-button { display: none; }

.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 25px; border-radius: 999px; font-weight: 700; border: 1px solid transparent; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--purple); color: white; box-shadow: 0 12px 30px rgba(93,66,167,.22); }
.button.ghost { border-color: #bdb4cb; background: rgba(255,255,255,.55); }
.button.disabled { background: #e5e1e9; color: #918b98; cursor: not-allowed; }
.light-button { background: white; color: var(--purple-dark); }
.text-link { display: inline-flex; gap: 12px; align-items: center; color: var(--purple); font-weight: 700; }
.text-link b { font-size: 1.25em; transition: transform .2s; }
.text-link:hover b { transform: translateX(5px); }

.home-hero { min-height: calc(100vh - 84px); display: grid; align-items: center; overflow: hidden; background: radial-gradient(circle at 73% 30%, #f5eafa 0 16%, transparent 38%), linear-gradient(135deg, #faf9f6 0%, #f0edf5 100%); }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; align-items: start; gap: 30px; padding: 52px 0 44px; }
.hero-copy { position: relative; z-index: 2; padding-top: 58px; }
.hero-copy h1 { margin-bottom: 28px; }
.hero-copy h1 em { color: var(--purple); font-style: normal; }
.hero-lead { max-width: 650px; font-size: 1.12rem; color: var(--muted); }
.hero-lead strong { display: block; margin-bottom: 8px; color: var(--purple-dark); font-size: 1.14em; }
.hero-actions { display: flex; gap: 14px; margin: 28px 0 26px; }
.hero-proof { display: flex; gap: 28px; padding: 0; margin: 0; list-style: none; color: var(--muted); font-size: .82rem; }
.hero-proof li { display: flex; flex-direction: column; }
.hero-proof b { color: var(--ink); font-size: .96rem; }
.hero-visual { position: relative; min-height: 580px; display: grid; align-items: center; }
.hero-visual::before { content: ""; position: absolute; inset: 6% -12% 4% 5%; border: 1px solid rgba(93,66,167,.2); border-radius: 48% 52% 44% 56% / 45% 38% 62% 55%; transform: rotate(-7deg); }
.hero-visual img { position: relative; z-index: 2; width: 90%; margin-left: auto; border-radius: 48% 48% 22% 22%; box-shadow: var(--shadow); }
.temperature-orbit { position: absolute; z-index: 3; inset: 0; pointer-events: none; }
.temperature-orbit span { position: absolute; display: grid; place-items: center; width: 48px; height: 48px; background: white; border: 1px solid var(--line); border-radius: 50%; box-shadow: 0 12px 32px rgba(37,29,52,.12); font-size: .8rem; font-weight: 700; color: var(--purple); }
.temperature-orbit span:nth-child(1) { right: 2%; top: 18%; }
.temperature-orbit span:nth-child(2) { left: 4%; bottom: 19%; }
.temperature-orbit span:nth-child(3) { right: 8%; bottom: 5%; }
.visual-note { position: absolute; z-index: 4; right: 4%; bottom: 14%; padding: 16px 20px; background: rgba(255,255,255,.9); border-radius: 16px; box-shadow: 0 12px 32px rgba(37,29,52,.13); backdrop-filter: blur(10px); }
.visual-note span, .visual-note b { display: block; }
.visual-note span { color: var(--purple); font-size: .76rem; }

.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 50px; margin-bottom: 56px; }
.section-heading h2 { max-width: 760px; margin-bottom: 0; }
.section-heading > p { max-width: 430px; margin-bottom: 4px; color: var(--muted); }
.problem-section { background: white; }
.problem-track { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.problem-track article { position: relative; padding: 44px 36px 20px 0; }
.problem-track article:not(:last-child) { border-right: 1px solid var(--line); margin-right: 36px; }
.problem-track span, .three-grid span, .channel-grid > article > span { color: var(--purple); font-size: .78rem; font-weight: 700; letter-spacing: .15em; }
.problem-track p { color: var(--muted); }

.answer-section { background: var(--purple-dark); color: white; }
.answer-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; }
.answer-title p:last-child { color: #cfc5e4; }
.mechanism-list { border-top: 1px solid rgba(255,255,255,.2); }
.mechanism-list article { display: grid; grid-template-columns: 54px 1fr; gap: 24px; padding: 34px 0; border-bottom: 1px solid rgba(255,255,255,.2); }
.mechanism-list b { color: var(--warm); }
.mechanism-list h3 { margin-bottom: 8px; }
.mechanism-list p { margin: 0; color: #cfc5e4; }

.material-grid { display: grid; grid-template-columns: .95fr 1.05fr; align-items: center; gap: 90px; }
.material-image { position: relative; }
.material-image img { border-radius: var(--radius); box-shadow: var(--shadow); }
.material-image > span { position: absolute; left: 24px; bottom: 22px; padding: 7px 12px; background: rgba(255,255,255,.82); border-radius: 99px; font-size: .72rem; color: var(--muted); }
.large-copy { font-size: 1.12rem; color: var(--muted); }
.evidence-band { background: #efedf3; }
.evidence-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 100px; }
.evidence-grid > div:first-child p { color: var(--muted); }
.patent-summary { padding: 42px; background: white; border-radius: var(--radius); box-shadow: var(--shadow); }
.status { display: inline-flex; margin-bottom: 20px; padding: 6px 11px; border-radius: 99px; font-size: .72rem; font-weight: 700; letter-spacing: .05em; }
.status.verified { color: #175e4a; background: #dff3ea; }
.status.pending { color: #8a5e12; background: #fff0cf; }
.status.neutral { color: var(--purple-dark); background: var(--lavender); }
.patent-summary > p { color: var(--purple); font-size: .78rem; font-weight: 700; }
.patent-summary h3 { font-size: 2rem; }
.patent-summary dl { margin: 28px 0 0; }
.patent-summary dl div, .data-list div { display: grid; grid-template-columns: 115px 1fr; gap: 20px; padding: 12px 0; border-top: 1px solid var(--line); }
dt { color: var(--muted); font-size: .8rem; }
dd { margin: 0; font-weight: 600; }

.scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scenario-grid article { min-height: 280px; padding: 30px; display: flex; flex-direction: column; justify-content: flex-end; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(155deg, white 40%, var(--lavender-2)); }
.scenario-grid span { align-self: flex-start; margin-bottom: auto; padding: 6px 10px; background: var(--lavender); border-radius: 99px; color: var(--purple); font-size: .75rem; }
.scenario-grid p { margin-bottom: 0; color: var(--muted); }
.guide-section { background: white; }
.guide-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.guide-card { padding: 34px; border: 1px solid var(--line); border-radius: 22px; background: white; transition: transform .2s, box-shadow .2s; }
.guide-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.guide-number { color: var(--purple); font-size: .74rem; font-weight: 700; letter-spacing: .15em; }
.guide-card h3 { margin-top: 34px; font-size: 1.5rem; }
.guide-card p { color: var(--muted); }
.final-cta { padding: 120px 0; color: white; background: radial-gradient(circle at 80% 20%, #795ec3, transparent 38%), var(--purple-dark); }
.final-cta h2 { max-width: 880px; }
.final-cta > .shell > div { display: flex; align-items: center; gap: 30px; }
.light-link { color: white; }

.page-hero { padding: 108px 0 92px; color: white; background: radial-gradient(circle at 78% 22%, #775bc0 0 8%, transparent 32%), linear-gradient(135deg, #251945, #4e358b); }
.page-hero-grid { display: grid; grid-template-columns: 1fr 250px; align-items: end; gap: 70px; }
.page-hero h1 { max-width: 940px; margin-bottom: 28px; white-space: pre-line; font-size: clamp(3rem, 6vw, 5.8rem); }
.page-lead { max-width: 790px; margin-bottom: 0; color: #d8cfee; font-size: 1.12rem; }
.hero-aside { padding: 24px 0 5px; border-top: 1px solid rgba(255,255,255,.35); }
.hero-aside b { display: block; font-size: .94rem; }
.hero-aside .range-number { color: white; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1; letter-spacing: -.04em; }
.hero-aside .status { margin-bottom: 12px; }
.back-link { color: #ded5f3; font-weight: 700; }
.soft-section { background: var(--lavender-2); }
.dark-section { background: var(--purple-dark); color: white; }
.product-intro { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 90px; }
.product-intro img { border-radius: var(--radius); box-shadow: var(--shadow); }
.check-list, .plain-list { padding: 0; margin: 28px 0 0; list-style: none; }
.check-list li { position: relative; padding: 13px 0 13px 35px; border-top: 1px solid var(--line); }
.check-list li::before { content: "✓"; position: absolute; left: 4px; color: var(--purple); font-weight: 700; }
.three-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.three-grid article { padding: 34px; background: white; border-radius: 20px; border: 1px solid var(--line); }
.three-grid h3 { margin-top: 45px; }
.three-grid p { margin-bottom: 0; color: var(--muted); }
.benefit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.benefit-grid article { min-height: 285px; padding: 32px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 22px; background: white; }
.benefit-grid span { color: var(--purple); font-size: .78rem; font-weight: 700; letter-spacing: .15em; }
.benefit-grid h3 { margin-top: auto; }
.benefit-grid p { margin-bottom: 0; color: var(--muted); }
.light-copy { color: #cfc5e4 !important; }
.scene-dark article { color: white; background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.15); }
.scene-dark p { color: #cfc5e4; }
.boundary { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.plain-list li { padding: 15px 0; border-top: 1px solid var(--line); }
.boundary-card { padding: 44px; background: var(--lavender-2); border-radius: var(--radius); }
.sub-cta { padding: 72px 0; background: #e9e5ef; }
.sub-cta .shell { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.sub-cta h2 { max-width: 780px; margin: 0; font-size: clamp(1.8rem, 3vw, 3rem); }
.sub-cta .shell > div { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; }

.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.compare-card { min-height: 510px; padding: 48px; border-radius: var(--radius); }
.compare-card.purple { color: white; background: var(--purple); }
.compare-card.warm { background: #f2e5cf; }
.compare-card h2 { font-size: clamp(2rem, 3vw, 3.3rem); }
.compare-card > p:not(.eyebrow) { opacity: .78; }
.compare-card dl { margin-top: 60px; }
.compare-card dl div { padding: 14px 0; border-top: 1px solid currentColor; }
.compare-card dt { color: inherit; opacity: .7; }
.compare-card dd { margin-top: 5px; }
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 11px; margin-top: 35px; }
.flow span { padding: 9px 13px; background: white; border: 1px solid var(--line); border-radius: 99px; font-size: .82rem; }
.flow b { color: var(--purple); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; background: white; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 20px; text-align: left; border-bottom: 1px solid var(--line); }
thead { background: var(--lavender-2); }
tbody th { color: var(--purple); }
.source-note { margin-top: 18px; color: var(--muted); font-size: .82rem; }

.patent-detail { display: grid; grid-template-columns: .72fr 1.28fr; align-items: center; gap: 90px; }
.certificate { padding: 22px; background: white; border-radius: var(--radius); box-shadow: var(--shadow); }
.data-list { margin: 30px 0; }
.boundary-note { padding: 26px; background: var(--lavender-2); border-left: 4px solid var(--purple); }
.boundary-note p { margin: 5px 0 17px; color: var(--muted); }
.boundary-note p:last-child { margin-bottom: 0; }
.evidence-status-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.evidence-status-grid article { padding: 32px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.evidence-status-grid p { margin-bottom: 0; color: var(--muted); }
.standard-list { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.standard-list article { padding: 24px 0; border-top: 1px solid var(--line); }
.standard-list p { margin: 6px 0 0; color: var(--muted); }

.all-guides { grid-template-columns: repeat(2, 1fr); }
.faq-list { max-width: 900px; margin: auto; border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; justify-content: space-between; gap: 20px; padding: 28px 0; cursor: pointer; list-style: none; font-size: 1.25rem; font-weight: 600; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary span { color: var(--purple); font-size: 1.5rem; transition: transform .2s; }
.faq-list details[open] summary span { transform: rotate(45deg); }
.faq-list details p { max-width: 760px; padding: 0 0 28px; color: var(--muted); }

.origin-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: center; }
.origin-grid img { border-radius: var(--radius); box-shadow: var(--shadow); }
.philosophy > h2 { max-width: 900px; }
.philosophy .three-grid { margin-top: 60px; }
.philosophy .three-grid article { color: white; background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.15); }
.philosophy .three-grid p { color: #cfc5e4; }
.timeline { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.timeline ol { margin: 0; padding: 0; list-style: none; }
.timeline li { display: grid; grid-template-columns: 95px 1fr; padding: 22px 0; border-top: 1px solid var(--line); }
.timeline b { color: var(--purple); font-size: 1.3rem; }

.channel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.channel-grid article { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.channel-grid h2 { margin-top: 45px; font-size: 2rem; }
.channel-grid p { min-height: 80px; color: var(--muted); }
.verify-box { display: grid; grid-template-columns: .9fr 1.1fr; gap: 90px; }
.verify-box ol { margin: 0; padding: 0; list-style: none; }
.verify-box li { display: grid; grid-template-columns: 100px 1fr; padding: 22px 0; border-top: 1px solid var(--line); }
.verify-box b { color: var(--purple); }

.answer-article { background: white; }
.article-shell { padding-top: 88px; padding-bottom: 110px; }
.direct-answer { padding: 46px; color: white; background: var(--purple); border-radius: var(--radius); box-shadow: var(--shadow); }
.direct-answer > p:last-child { max-width: 980px; margin-bottom: 0; font-size: clamp(1.35rem, 2.4vw, 2.2rem); line-height: 1.5; }
.article-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 66px 0; }
.article-points article { padding: 30px 0; border-top: 2px solid var(--purple); }
.article-points span { color: var(--purple); font-size: .75rem; font-weight: 700; }
.article-points h3 { margin-top: 35px; }
.article-points p { color: var(--muted); }
.answer-article blockquote { margin: 0; padding: 42px; background: var(--lavender-2); border-left: 5px solid var(--warm); }
.answer-article blockquote span { color: var(--purple); font-size: .75rem; font-weight: 700; }
.answer-article blockquote p { margin: 12px 0 0; font-size: 1.55rem; }
.article-next { display: flex; justify-content: space-between; align-items: center; gap: 40px; margin-top: 80px; padding-top: 50px; border-top: 1px solid var(--line); }
.article-next h2 { max-width: 700px; font-size: 2.3rem; }

.site-footer { padding: 80px 0 28px; color: #d9d4e2; background: #1e1927; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr; gap: 70px; }
.footer-brand h2 { color: white; font-size: 2.5rem; }
.footer-brand p:last-child { max-width: 480px; color: #aaa2b4; }
.footer-grid h3 { color: white; font-size: 1rem; }
.footer-grid > div:not(:first-child) a { display: block; margin: 11px 0; color: #aaa2b4; }
.footer-grid a:hover { color: white; }
.footer-note { display: flex; justify-content: space-between; gap: 30px; margin-top: 65px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #b9b1c2; font-size: .75rem; }
.footer-note span { min-width: 0; overflow-wrap: anywhere; }
.footer-note a { display: inline-flex; min-height: 44px; align-items: center; text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 36px, 760px); }
  .site-header { height: 72px; }
  .nav-shell { grid-template-columns: 150px 1fr auto; width: calc(100vw - 28px); }
  .brand, .brand img { width: 132px; height: 58px; }
  .menu-button { display: grid; place-content: center; gap: 4px; justify-self: end; width: 42px; height: 42px; border: 0; border-radius: 50%; background: var(--lavender); }
  .menu-button span:not(.sr-only) { display: block; width: 18px; height: 2px; background: var(--purple-dark); }
  .site-nav { position: fixed; inset: 72px 0 auto; display: none; padding: 20px; background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); }
  .site-nav.open { display: grid; }
  .site-nav a { padding: 12px; font-size: 1rem; }
  .site-nav a::after { display: none; }
  .header-cta { display: none; }
  .hero-grid, .answer-grid, .material-grid, .evidence-grid, .product-intro, .patent-detail, .origin-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: auto; max-width: 650px; margin: auto; }
  .hero-visual img { width: 88%; }
  .page-hero-grid { grid-template-columns: 1fr; }
  .hero-aside { max-width: 400px; }
  .scenario-grid, .channel-grid, .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .compare-grid { grid-template-columns: 1fr; }
  .standard-list, .timeline, .verify-box { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; gap: 35px; }
}

@media (max-width: 700px) {
  :root { --shell: calc(100vw - 30px); --radius: 20px; }
  .section { padding: 76px 0; }
  h1 { font-size: clamp(2.75rem, 14vw, 4.1rem); }
  h2 { font-size: clamp(2rem, 10vw, 3.1rem); }
  .home-hero { min-height: auto; }
  .hero-grid { padding-top: 54px; }
  .hero-copy { padding-top: 0; }
  .hero-lead, .page-lead, .large-copy { font-size: 1rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-proof { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .hero-visual { min-height: 420px; }
  .hero-visual img { width: 100%; }
  .visual-note { right: 2%; bottom: 6%; }
  .temperature-orbit span:nth-child(2) { left: -2%; }
  .section-heading { display: block; margin-bottom: 38px; }
  .section-heading > p, .section-heading > .text-link { margin-top: 24px; }
  .problem-track { grid-template-columns: 1fr; }
  .problem-track article:not(:last-child) { margin: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .answer-grid, .material-grid, .evidence-grid, .product-intro, .patent-detail, .origin-grid, .boundary { gap: 48px; }
  .scenario-grid, .guide-grid, .all-guides, .three-grid, .evidence-status-grid, .channel-grid, .article-points, .benefit-grid { grid-template-columns: 1fr; }
  .scenario-grid article { min-height: 230px; }
  .patent-summary, .boundary-card, .compare-card { padding: 30px 24px; }
  .final-cta { padding: 85px 0; }
  .final-cta > .shell > div { align-items: flex-start; flex-direction: column; }
  .page-hero { padding: 78px 0 68px; }
  .page-hero h1 { font-size: clamp(2.55rem, 13vw, 4rem); }
  .boundary, .compare-grid { grid-template-columns: 1fr; }
  .sub-cta .shell, .article-next { align-items: flex-start; flex-direction: column; }
  .flow { align-items: flex-start; flex-direction: column; }
  .flow b { transform: rotate(90deg); margin-left: 20px; }
  .direct-answer { padding: 30px 24px; }
  .article-shell { padding-top: 60px; }
  .answer-article blockquote { padding: 30px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-note { flex-direction: column; }
}

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

/* 2026 official-site v2: product-led editorial system */
.product-hero-visual { min-height: 0; align-self: center; }
.product-hero-visual::before { inset: -5% -6% 7% 7%; border-radius: 32px; transform: rotate(2deg); }
.product-hero-visual img { width: min(100%, 620px); aspect-ratio: 1; object-fit: cover; border-radius: 30px; }
.page-fact-meta { width: var(--shell); margin: 0 auto; padding: 22px 0 34px; color: var(--muted); border-top: 1px solid var(--line); font-size: .76rem; text-align: center; }
.claim-scope-strip { padding: 18px 0; color: #514a57; background: #f0ebf3; border-top: 1px solid rgba(112,83,154,.12); border-bottom: 1px solid rgba(112,83,154,.12); }
.claim-scope-strip .shell { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.claim-scope-strip p { margin: 0; font-size: .8rem; }
.claim-scope-strip strong { color: var(--purple-dark); }

.six-benefits { background: #f3eef5; }
.benefit-grid-six { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.benefit-card { min-height: 230px; padding: 30px; background: rgba(255,255,255,.78); border: 1px solid rgba(112,83,154,.15); border-radius: 22px; }
.benefit-card span { color: var(--purple); font-size: .72rem; font-weight: 700; letter-spacing: .14em; }
.benefit-card h3 { margin: 62px 0 12px; font-size: 1.72rem; font-weight: 500; }
.benefit-card p { margin: 0; color: var(--muted); }

.material-split { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 84px; }
.material-split.reverse { grid-template-columns: 1.1fr .9fr; }
.material-split img { width: 100%; border-radius: 28px; box-shadow: var(--shadow); }
.material-copy { max-width: 560px; }
.material-copy .text-link { margin-top: 18px; }

.evidence-metrics { display: grid; gap: 12px; }
.evidence-metrics article { padding: 24px 26px; background: rgba(255,255,255,.8); border: 1px solid var(--line); border-radius: 18px; }
.evidence-metrics b,.evidence-metrics span { display: block; }
.evidence-metrics b { color: var(--purple-dark); font-size: clamp(1.6rem,3vw,2.5rem); font-weight: 500; }
.evidence-metrics span { margin-top: 5px; color: var(--muted); font-size: .8rem; }

.historical-name-note { max-width: 900px; }
.historical-name-note h2 { font-size: clamp(2rem,4vw,3.6rem); }
.historical-name-note > p:not(.eyebrow) { color: var(--muted); font-size: 1.08rem; }
.historical-name-note strong { display: block; margin: 22px 0; color: var(--purple-dark); }

.compact-spec,.product-facts { margin: 34px 0 0; }
.compact-spec div,.product-facts div { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 13px 0; border-top: 1px solid var(--line); }
.product-facts { display: grid; grid-template-columns: 1fr 1fr; column-gap: 40px; }
.range-feature { overflow: hidden; color: white; background: linear-gradient(145deg,#241b30,#5f477c); }
.range-grid { display: grid; grid-template-columns: 1fr .85fr; align-items: center; gap: 80px; }
.range-grid h2 { margin: 0 0 20px; color: #f0ddff; font-size: clamp(5rem,12vw,10rem); line-height: .88; }
.range-grid p { color: #d7cfdd; }
.range-grid .text-link { color: #f0ddff; }
.range-grid img { border-radius: 30px; transform: rotate(2deg); box-shadow: 0 32px 80px rgba(0,0,0,.25); }
.boundary-inline { margin: 24px 0; padding: 16px 18px; color: #ddd2e4; border: 1px solid rgba(255,255,255,.2); border-radius: 12px; font-size: .88rem; }

.evidence-intro { max-width: 900px; }
.evidence-records { display: grid; gap: 18px; }
.evidence-record { display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; padding: 38px; background: white; border: 1px solid var(--line); border-radius: 24px; }
.evidence-record-title span { display: inline-flex; padding: 5px 10px; color: var(--purple); background: var(--lavender); border-radius: 99px; font-size: .72rem; font-weight: 700; }
.evidence-record-title h2 { margin-top: 36px; font-size: clamp(2rem,4vw,3.6rem); }
.evidence-record dl { margin: 0; }
.evidence-record dl div { display: grid; grid-template-columns: 100px 1fr; gap: 18px; padding: 13px 0; border-top: 1px solid var(--line); }
.evidence-record dd { font-weight: 500; }
.certificate { width: min(100%,460px); border-radius: 18px; box-shadow: var(--shadow); }

.about-roles { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.about-roles article { padding: 30px; background: white; border: 1px solid var(--line); border-radius: 22px; }
.about-roles span { color: var(--purple); font-size: .76rem; font-weight: 700; }
.about-roles h2 { margin: 58px 0 18px; font-size: clamp(1.65rem,3vw,2.45rem); overflow-wrap: anywhere; }
.about-roles p { color: var(--muted); }
.channel-card b { color: var(--purple); font-size: .82rem; }

/* Content-depth layouts */
.first-visit-steps { background: var(--paper); }
.first-visit-steps .problem-track article { display: flex; min-width: 0; flex-direction: column; }
.first-visit-steps .problem-track h3 { margin-top: 16px; }
.first-visit-steps .problem-track .text-link { align-self: flex-start; margin-top: auto; }
.first-visit-steps > .shell > .source-note { margin-top: 28px; }

.benefit-card,
.boundary-card,
.evidence-record,
.about-roles article,
.channel-grid article { min-width: 0; }
.warm-card { background: #f3e8d6; }
.boundary-card[data-care-layer="label-fact"] { border-top: 4px solid var(--purple); }
.boundary-card[data-care-layer="brand-statement"] { border-top: 4px solid var(--warm); }
.boundary-card h2,
.boundary-card h3 { overflow-wrap: anywhere; }
.source-note { line-height: 1.7; }
.source-note .text-link + .text-link { margin-left: 20px; }

.page-care .article-points { margin-bottom: 0; padding: 0; list-style: none; }
.page-care .article-points li { min-width: 0; padding: 28px; border-top: 2px solid var(--purple); background: rgba(255,255,255,.72); }
.page-care .article-points li::before { display: block; margin-bottom: 22px; color: var(--purple); content: counter(list-item, decimal-leading-zero); font-size: .75rem; font-weight: 700; letter-spacing: .12em; }

.page-choose .article-points { grid-template-columns: repeat(5,minmax(0,1fr)); }
.page-choose .article-points article { min-width: 0; padding-right: 18px; }
.page-choose .article-points h2 { margin-top: 28px; font-size: clamp(1.3rem,2vw,1.75rem); line-height: 1.25; }
.page-choose .article-points p { margin-bottom: 0; }

.evidence-record > *,
.evidence-record dl div { min-width: 0; }
.evidence-record dd,
.data-list dd,
.product-facts dd,
.compact-spec dd { overflow-wrap: anywhere; }
.page-evidence .historical-name-note { padding-left: 30px; border-left: 4px solid var(--warm); }

#content-updates { scroll-margin-top: 100px; }
.page-about #content-updates .historical-name-note { max-width: 980px; }
.page-about #content-updates ul { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px 36px; margin: 28px 0 36px; padding: 0; list-style: none; }
.page-about #content-updates li { position: relative; min-width: 0; padding: 16px 0 16px 28px; border-top: 1px solid var(--line); }
.page-about #content-updates li::before { position: absolute; left: 2px; color: var(--purple); content: "•"; font-weight: 700; }

.footer-grid { grid-template-columns: minmax(0,1.8fr) minmax(0,1fr) minmax(0,1.2fr); }
.footer-grid > div { min-width: 0; }
.footer-grid a { overflow-wrap: anywhere; }
.footer-note { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); }

@media (max-width: 980px) {
  .benefit-grid-six { grid-template-columns: repeat(2,1fr); }
  .material-split,.material-split.reverse,.range-grid,.evidence-record { grid-template-columns: 1fr; gap: 44px; }
  .product-facts { grid-template-columns: 1fr; }
  .about-roles { grid-template-columns: 1fr; }
  .about-roles h2 { margin-top: 34px; }
  .page-choose .article-points { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-note { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 700px) {
  .product-hero-visual { min-height: 0; }
  body { min-width: 0; font-size: 1rem; }
  .eyebrow, .hero-proof, .status, .visual-note span, .evidence-metrics span,
  .evidence-record-title span, .scenario-grid span, .about-roles span,
  .channel-card b { font-size: .875rem; }
  main, section, .shell, .nav-shell, dl, dd, a { min-width: 0; }
  .menu-button { width: 44px; height: 44px; }
  .site-nav a, .text-link { min-height: 44px; align-items: center; }
  .benefit-grid-six { grid-template-columns: 1fr; gap: 12px; }
  .benefit-card { min-height: 180px; padding: 20px 16px; }
  .benefit-card h3 { margin-top: 38px; font-size: 1.35rem; }
  .benefit-card p { font-size: .875rem; }
  .material-split,.material-split.reverse,.range-grid,.evidence-record { gap: 32px; }
  .material-split img,.range-grid img { border-radius: 20px; }
  .evidence-record { padding: 24px 18px; }
  .evidence-record dl div { grid-template-columns: 1fr; gap: 4px; }
  .range-grid h2 { font-size: clamp(4.4rem,25vw,7rem); }
  .compact-spec div, .product-facts div { grid-template-columns: 1fr; gap: 4px; }
  .page-care .article-points, .page-choose .article-points, .page-about #content-updates ul { grid-template-columns: 1fr; }
  .page-evidence .historical-name-note { padding-left: 18px; }
  .source-note .text-link + .text-link { margin-left: 0; }
  .sub-cta .shell > div { width: 100%; align-items: flex-start; flex-direction: column; }
  .footer-grid, .footer-note { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-grid > div:not(:first-child) a { display: flex; min-height: 44px; align-items: center; margin: 0; }
  .footer-note { gap: 10px; font-size: .875rem; }
  .claim-scope-strip .shell { grid-template-columns: 1fr; gap: 10px; }
  .claim-scope-strip p, .source-note, .page-fact-meta, dt { font-size: .875rem; }
  .evidence-record dd, .data-list dd, .product-facts dd, .compact-spec dd, .footer-grid a, .footer-note, .text-link { overflow-wrap: anywhere; }
}