:root {
  --ink: #102b31;
  --deep: #092b33;
  --teal: #008f83;
  --mint: #3de0c5;
  --mint-soft: #d9fbf5;
  --signal: #eeff66;
  --paper: #ffffff;
  --mist: #eef4f4;
  --line: #bdd0d2;
  --muted: #5c7074;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif; font-size: 16px; line-height: 1.78; letter-spacing: .025em; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button { font: inherit; }
h1, h2, h3, p { margin-top: 0; }
.shell { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.eyebrow { margin: 0 0 16px; color: var(--mint); font-size: .75rem; font-weight: 900; letter-spacing: .2em; }
.eyebrow.dark { color: var(--teal); }

.site-header { position: sticky; z-index: 50; top: 0; color: var(--deep); background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 13px; text-decoration: none; }
.brand > span:last-child { display: block; }
.brand b, .brand small { display: block; }
.brand b { font-size: 1.02rem; letter-spacing: .08em; }
.brand small { margin-top: -2px; color: #73878a; font-size: .57rem; font-weight: 800; letter-spacing: .15em; }
.brand-mark { position: relative; display: block; width: 36px; height: 36px; flex: 0 0 36px; background: var(--deep); border-radius: 4px; }
.brand-mark i { position: absolute; left: 9px; height: 3px; background: var(--mint); }
.brand-mark i:nth-child(1) { top: 10px; width: 18px; }
.brand-mark i:nth-child(2) { top: 17px; width: 13px; }
.brand-mark i:nth-child(3) { top: 24px; width: 18px; }
.site-menu { display: flex; align-items: center; gap: 26px; }
.site-menu a { padding-block: 6px; color: #2f4b50; font-size: .84rem; font-weight: 800; text-decoration: none; border-bottom: 2px solid transparent; }
.site-menu a:hover { color: var(--teal); border-color: var(--mint); }
.menu-toggle { display: none; padding: 7px 12px; color: var(--deep); background: transparent; border: 1px solid var(--deep); border-radius: 4px; font-weight: 800; }

.cover { overflow: hidden; padding: 88px 0 0; color: #fff; background: var(--deep); }
.cover-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 80px; align-items: end; }
.cover-copy { padding-bottom: 76px; }
.cover h1 { max-width: 790px; margin-bottom: 28px; font-size: clamp(3rem, 6.5vw, 6.25rem); line-height: 1.08; letter-spacing: -.055em; }
.cover h1 span { color: var(--signal); border-bottom: .08em solid var(--mint); }
.cover-lead { max-width: 730px; margin-bottom: 0; color: #c7d9dc; font-size: 1.06rem; }
.cover-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 33px; }
.action { display: inline-flex; min-height: 50px; padding: 0 23px; align-items: center; justify-content: center; font-weight: 900; text-decoration: none; border: 1px solid transparent; border-radius: 4px; transition: transform .2s ease, background .2s ease; }
.action:hover { transform: translateY(-2px); }
.action-primary { color: var(--deep); background: var(--signal); }
.action-plain { color: #fff; border-color: #6a8387; }
.action-plain:hover { background: rgba(255,255,255,.08); }
.research-note { padding: 28px; color: var(--deep); background: var(--mint); border-top: 9px solid var(--signal); }
.note-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid rgba(9,43,51,.35); }
.note-head span { font-size: .7rem; font-weight: 900; letter-spacing: .19em; }
.note-head b { font: 900 2rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.research-note dl { margin: 15px 0; }
.research-note dl > div { display: grid; grid-template-columns: 72px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid rgba(9,43,51,.2); }
.research-note dt { color: #376067; font-size: .75rem; font-weight: 800; }
.research-note dd { margin: 0; font-weight: 900; }
.research-note > p { margin: 16px 0 0; color: #31585f; font-size: .75rem; line-height: 1.6; }

.product-index { display: grid; grid-template-columns: repeat(3, 1fr); color: var(--deep); background: #fff; border-top: 1px solid var(--deep); }
.product-index a { display: grid; grid-template-columns: 38px 88px 1fr; gap: 13px; min-height: 122px; padding: 16px 22px; align-items: center; text-decoration: none; border-right: 1px solid var(--line); transition: background .2s ease; }
.product-index a:last-child { border-right: 0; }
.product-index a:hover { background: var(--mint-soft); }
.product-index img { position: relative; z-index: 2; width: 88px; height: 88px; object-fit: contain; background: #fff; mix-blend-mode: normal; }
.index-no { color: var(--teal); font: 800 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.product-index b, .product-index small { display: block; }
.product-index b { font-size: 1.2rem; }
.product-index small { color: var(--muted); font-size: .7rem; }

.section { padding: 104px 0; }
.section-title h2 { margin-bottom: 0; font-size: clamp(2.2rem, 4.2vw, 4.2rem); line-height: 1.17; letter-spacing: -.045em; }
.split-title { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; margin-bottom: 46px; align-items: end; }
.split-title > p { margin-bottom: 8px; color: var(--muted); }
.overview { background: var(--mist); }
.finding-layout { display: grid; grid-template-columns: 1.2fr .8fr; border: 1px solid var(--deep); }
.finding-main { min-height: 500px; padding: 42px; color: #fff; background: var(--deep); }
.finding-number { display: block; margin-bottom: 105px; color: var(--mint); font: 800 .8rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.finding-label { margin-bottom: 10px; color: var(--mint); font-size: .72rem; font-weight: 900; letter-spacing: .15em; }
.finding-main h3 { max-width: 620px; margin-bottom: 20px; font-size: clamp(2rem, 3.5vw, 3.6rem); line-height: 1.2; letter-spacing: -.035em; }
.finding-main > p:last-child { max-width: 650px; margin-bottom: 0; color: #c3d3d6; }
.finding-list { background: #fff; }
.finding-list article { display: grid; grid-template-columns: 55px 1fr; gap: 18px; min-height: 166px; padding: 31px; border-bottom: 1px solid var(--line); }
.finding-list article:last-child { border-bottom: 0; }
.finding-list span { color: var(--teal); font: 800 .78rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; }
.finding-list h3 { margin-bottom: 6px; font-size: 1.14rem; }
.finding-list p { margin-bottom: 0; color: var(--muted); font-size: .88rem; }

.reports { color: #fff; background: var(--deep); }
.report-heading { max-width: 760px; margin-bottom: 55px; }
.report-heading > p:last-child { margin: 15px 0 0; color: #aec3c6; }
.model-report { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 44px; color: var(--ink); background: #fff; border-top: 8px solid var(--mint); }
.model-report.reverse .model-visual { order: 2; }
.model-visual { position: relative; display: grid; min-height: 660px; padding: 42px; place-items: center; background: #dce9ea; }
.model-visual::before { content: ""; position: absolute; inset: 28px; border: 1px solid rgba(9,43,51,.22); pointer-events: none; }
.model-visual img { position: relative; z-index: 2; width: min(92%, 460px); max-height: 470px; object-fit: contain; background: #fff; mix-blend-mode: normal; }
.report-no { position: absolute; z-index: 1; top: 42px; left: 42px; color: var(--teal); font: 900 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; }
.rating-block { position: absolute; z-index: 1; right: 0; bottom: 0; min-width: 212px; padding: 21px 25px; color: #fff; background: var(--deep); }
.rating-block small { display: block; color: #a9bec1; font-size: .68rem; font-weight: 800; }
.rating-block strong { color: var(--signal); font: 900 3.4rem/1.1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: -.08em; }
.rating-block span { margin-left: 6px; color: #a9bec1; }
.model-analysis { padding: 55px 50px; }
.model-code { margin-bottom: 10px; color: var(--teal); font: 900 .73rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .15em; }
.model-analysis > h3 { margin-bottom: 20px; font-size: clamp(2rem, 3.4vw, 3.35rem); line-height: 1.2; letter-spacing: -.04em; }
.analysis-lead { color: var(--muted); }
.signal-list { margin: 28px 0 22px; border-top: 1px solid var(--line); }
.signal-list > div { display: grid; grid-template-columns: 145px 1fr; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.signal-list span { color: var(--teal); font-size: .7rem; font-weight: 900; }
.signal-list b { font-size: .9rem; }
.caution { margin: 23px 0; padding: 20px; color: var(--deep); background: var(--mint-soft); border-left: 5px solid var(--teal); }
.caution b { font-size: .83rem; }
.caution p { margin: 5px 0 0; color: #476267; font-size: .85rem; }
.text-link { display: inline-flex; min-height: 42px; padding: 0 16px; align-items: center; color: #fff; background: var(--deep); font-size: .82rem; font-weight: 900; text-decoration: none; border-bottom: 3px solid var(--mint); }
.text-link:hover { color: var(--signal); }
.rating-note { margin: 13px 0 0; color: #77898c; font-size: .7rem; line-height: 1.55; }

.comparison { background: #fff; }
.table-wrap { overflow-x: auto; border: 1px solid var(--deep); }
table { width: 100%; min-width: 760px; border-collapse: collapse; }
th, td { padding: 20px; text-align: left; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
tr:last-child th, tr:last-child td { border-bottom: 0; }
th:last-child, td:last-child { border-right: 0; }
thead th { color: #fff; background: var(--deep); font-size: .78rem; }
thead th:not(:first-child) { text-align: center; }
tbody th { width: 34%; background: var(--mist); font-size: .86rem; }
tbody td { color: #3f595e; text-align: center; font-size: .83rem; }
.signal { display: inline-block; min-width: 65px; padding: 3px 8px; font-size: .7rem; font-weight: 900; border: 1px solid var(--line); }
.signal.high { color: var(--deep); background: var(--signal); border-color: var(--deep); }
.signal.mid { color: var(--deep); background: var(--mint-soft); border-color: var(--teal); }
.signal.none { color: #74878a; background: #f1f4f4; }
.table-note { margin: 15px 0 0; color: var(--muted); font-size: .75rem; }

.checklist { color: #fff; background: var(--teal); }
.checklist-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 90px; }
.checklist-title { position: sticky; top: 110px; align-self: start; }
.checklist-title .eyebrow { color: var(--signal); }
.checklist-title h2 { margin-bottom: 20px; font-size: clamp(2.2rem, 4vw, 4.1rem); line-height: 1.19; letter-spacing: -.04em; }
.checklist-title > p:last-child { color: #d7fffa; }
.checklist-items { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.4); }
.checklist-items li { display: grid; grid-template-columns: 72px 1fr; gap: 20px; padding: 25px 0; border-bottom: 1px solid rgba(255,255,255,.4); }
.checklist-items span { color: var(--signal); font: 900 .8rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; }
.checklist-items b { font-size: 1.12rem; }
.checklist-items p { margin: 3px 0 0; color: #d3f4f0; font-size: .87rem; }

.method { background: var(--mist); }
.method-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; }
.method h2 { margin-bottom: 20px; font-size: clamp(2.2rem, 4vw, 4rem); line-height: 1.18; letter-spacing: -.04em; }
.method-intro { color: var(--muted); }
.method-rules { border-top: 1px solid var(--deep); }
.method-rules article { display: grid; grid-template-columns: 58px 1fr; gap: 20px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.method-rules span { display: grid; width: 38px; height: 38px; color: var(--deep); background: var(--mint); place-items: center; font: 900 .8rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.method-rules h3 { margin-bottom: 5px; font-size: 1.12rem; }
.method-rules p { margin-bottom: 0; color: var(--muted); font-size: .88rem; }

.sources { color: #fff; background: #061e24; }
.source-heading { margin-bottom: 34px; }
.source-list { border-top: 1px solid #496268; }
.source-list a { display: grid; grid-template-columns: 60px 1fr auto; gap: 20px; padding: 25px 4px; align-items: center; text-decoration: none; border-bottom: 1px solid #496268; transition: color .2s ease, padding .2s ease; }
.source-list a:hover { padding-inline: 12px; color: var(--signal); }
.source-list > a > span { color: var(--mint); font: 900 .75rem/1 ui-monospace, SFMono-Regular, Menlo, monospace; }
.source-list small, .source-list b { display: block; }
.source-list small { color: #8ba3a7; font-size: .7rem; }
.source-list b { margin-top: 2px; }
.source-list em { color: #9eb2b5; font-size: .75rem; font-style: normal; }
.disclaimer { max-width: 900px; margin: 27px 0 0; color: #8da3a7; font-size: .74rem; }

.next-step { padding: 70px 0; color: var(--deep); background: var(--signal); }
.next-step-inner { display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.next-step h2 { margin-bottom: 8px; font-size: clamp(2rem, 3.5vw, 3.4rem); line-height: 1.2; }
.next-step p:last-child { margin-bottom: 0; color: #456066; }
.next-step .eyebrow { color: var(--teal); }
.action-light { flex: 0 0 auto; color: #fff; background: var(--deep); }

.site-footer { padding: 48px 0 24px; color: #c0d0d3; background: var(--deep); }
.footer-main { display: flex; align-items: start; justify-content: space-between; gap: 40px; }
.footer-brand { color: #fff; }
.footer-brand small { color: #8da5a9; }
.footer-main nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 25px; }
.footer-main nav a { color: #bfd0d2; font-size: .82rem; text-decoration: none; }
.footer-main nav a:hover { color: var(--signal); }
.footer-bottom { display: flex; justify-content: space-between; gap: 25px; margin-top: 35px; padding-top: 19px; color: #70898d; border-top: 1px solid #3d585d; font-size: .72rem; }

@media (max-width: 960px) {
  .cover-grid, .split-title, .finding-layout, .model-report, .checklist-grid, .method-grid { grid-template-columns: 1fr; }
  .cover-grid { gap: 15px; }
  .cover-copy { padding-bottom: 42px; }
  .research-note { max-width: 620px; }
  .split-title, .checklist-grid, .method-grid { gap: 30px; }
  .finding-number { margin-bottom: 55px; }
  .model-report.reverse .model-visual { order: initial; }
  .model-visual { min-height: 540px; }
  .checklist-title { position: static; }
}

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .header-inner { min-height: 68px; }
  .menu-toggle { display: block; }
  .site-menu { display: none; position: absolute; top: 68px; right: 0; left: 0; padding: 20px; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 12px; }
  .site-menu.open { display: flex; }
  .cover { padding-top: 60px; }
  .product-index { grid-template-columns: 1fr; width: 100%; }
  .product-index a { grid-template-columns: 38px 74px 1fr; min-height: 96px; padding: 10px 20px; border-right: 0; border-bottom: 1px solid var(--line); }
  .product-index a:last-child { border-bottom: 0; }
  .product-index img { width: 74px; height: 74px; }
  .section { padding: 76px 0; }
  .finding-main { min-height: 420px; padding: 30px 24px; }
  .finding-list article { padding: 25px 22px; }
  .model-visual { min-height: 440px; padding: 30px; }
  .model-visual::before { inset: 18px; }
  .model-visual img { max-height: 340px; }
  .report-no { top: 29px; left: 29px; }
  .rating-block { min-width: 180px; padding: 17px 20px; }
  .rating-block strong { font-size: 2.8rem; }
  .model-analysis { padding: 37px 24px; }
  .signal-list > div { grid-template-columns: 115px 1fr; }
  .source-list a { grid-template-columns: 40px 1fr; }
  .source-list em { display: none; }
  .next-step-inner, .footer-main, .footer-bottom { flex-direction: column; align-items: stretch; }
  .footer-main nav { margin-top: 8px; }
}

@media (max-width: 460px) {
  .brand b { font-size: .87rem; }
  .brand small { font-size: .49rem; }
  .cover h1 { font-size: clamp(2.7rem, 13.5vw, 4rem); }
  .cover-actions .action { width: 100%; }
  .research-note { padding: 21px; }
  .finding-list article { grid-template-columns: 38px 1fr; gap: 8px; }
  .model-visual { min-height: 390px; }
  .model-visual img { max-height: 290px; }
  .signal-list > div { grid-template-columns: 1fr; gap: 2px; }
  .checklist-items li { grid-template-columns: 42px 1fr; }
  .method-rules article { grid-template-columns: 45px 1fr; gap: 13px; }
  .footer-main nav { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}