:root {
  --primary: #072f90;
  --ink: #101a35;
  --paper: #f7f9ff;
  --paper-deep: #e9effc;
  --line: #c7d2ec;
  --muted: #5f6980;
  --lime: #a9c4ff;
  --blue: #6f99ec;
  --orange: #d4e1ff;
  --pink: #e7edff;
  --white: #ffffff;
  --max: 1240px;
  --text-xs: .72rem;
  --text-sm: .78rem;
  --radius-control: 10px;
  --radius-pill: 999px;
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --shadow-soft: 0 10px 28px rgba(16, 26, 53, .08);
  --shadow-offset: 10px 10px 0 var(--primary);
  --shadow-action: 4px 4px 0 rgba(7, 47, 144, .18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { color: var(--ink); background: var(--lime); }
:where(a, button, input, select, summary):focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px #3267ba;
}

.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;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 8px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  min-height: 84px;
  margin: 0 auto;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  font-family: "DM Sans", sans-serif;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .11em;
}
.brand-logo { display: block; width: 72px; height: 54px; object-fit: contain; }
.brand-logo-link { display: block; flex: 0 0 auto; }
.brand-program { font-family: "Noto Sans JP", sans-serif; font-weight: 700; letter-spacing: .02em; }
.site-nav { display: flex; gap: 30px; align-items: center; }
.site-nav a {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
}
.site-nav a:not(.nav-cta):hover { text-decoration: underline; text-underline-offset: 5px; }
.site-nav .nav-cta {
  padding: 9px 16px;
  color: var(--white);
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-pill);
  transition: .2s ease;
}
.site-nav .nav-cta:hover { color: var(--primary); background: var(--white); }
.menu-button { display: none; border: 0; background: none; }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(360px, .85fr);
  gap: 60px;
  align-items: center;
  max-width: var(--max);
  min-height: 450px;
  margin: 0 auto;
  padding: 48px 48px 54px;
  overflow: hidden;
}
.hero-copy { position: relative; z-index: 2; }
.eyebrow {
  margin: 0 0 20px;
  font-family: "DM Sans", sans-serif;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow span {
  display: inline-block;
  margin-right: 12px;
  padding: 4px 9px;
  color: var(--white);
  background: var(--primary);
  border-radius: 3px;
}
.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.5rem, 4.2vw, 3.75rem);
  line-height: 1.2;
  letter-spacing: -.055em;
}
.hero h1 em {
  position: relative;
  z-index: 1;
  font-style: normal;
}
.hero h1 em::after {
  position: absolute;
  z-index: -1;
  right: -.06em;
  bottom: .05em;
  left: -.04em;
  height: .18em;
  background: rgba(111, 153, 236, .72);
  content: "";
  transform: rotate(-1deg);
}
.hero-lead { max-width: 650px; margin: 20px 0 0; font-size: .94rem; line-height: 1.9; }
.marker { padding: 0 .1em; background: linear-gradient(transparent 58%, rgba(111, 153, 236, .42) 58%); font-weight: 600; }
.hero-actions { display: flex; gap: 12px; margin-top: 24px; }
.button {
  display: inline-flex;
  gap: 30px;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid var(--ink);
  border-radius: 99px;
  font-size: .86rem;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--primary); border-color: var(--primary); color: var(--white); }
.button-primary:hover { background: #0b44c2; }
.button-ghost:hover { background: var(--white); }
.button-ghost { color: var(--primary); border-color: var(--primary); }
.hero-card {
  position: relative;
  z-index: 2;
  padding: 22px;
  background: rgba(255, 255, 255, .84);
  border: 1px solid var(--ink);
  box-shadow: 7px 7px 0 var(--primary);
  transform: rotate(.6deg);
  backdrop-filter: blur(4px);
}
.ruler { display: flex; align-items: center; justify-content: space-between; height: 36px; border-bottom: 2px solid var(--ink); font: 600 var(--text-xs) "DM Sans"; }
.ruler i { width: 1px; height: 12px; align-self: flex-end; background: var(--ink); }
.card-kicker { margin: 18px 0 6px; color: var(--primary); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .14em; }
.question { margin: 0; font-size: clamp(1.05rem, 1.45vw, 1.18rem); font-weight: 700; line-height: 1.65; letter-spacing: -.02em; }
.question span { white-space: nowrap; }
.score-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 24px; padding-top: 15px; border-top: 1px solid var(--line); }
.score-row div { display: flex; flex-direction: column; }
.score-row strong { font: 700 1.7rem "DM Sans"; line-height: 1; }
.score-row span { margin-top: 5px; color: var(--muted); font: 600 var(--text-xs) "DM Sans"; letter-spacing: .06em; text-transform: uppercase; }
.hero-orbit { position: absolute; border: 1px solid rgba(23, 24, 22, .14); border-radius: 50%; pointer-events: none; }
.orbit-one { top: -250px; right: -170px; width: 620px; height: 620px; }
.orbit-two { right: 40px; bottom: -320px; width: 750px; height: 750px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .paper-item.is-open .paper-details { animation: none; }
}

.section { max-width: var(--max); margin: 0 auto; padding: 72px 48px; }
.section-label {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 40px;
  font: 700 var(--text-xs) "DM Sans";
  letter-spacing: .13em;
}
.section-label:not(.section-label-light) { color: var(--primary); }
.section-label::after { width: 70px; height: 1px; background: currentColor; content: ""; opacity: .45; }
.section-label span { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid currentColor; border-radius: 50%; letter-spacing: 0; }
.intro-heading { display: grid; grid-template-columns: .62fr 1.38fr; gap: 60px; align-items: start; }
.display-small { margin: 0; color: var(--primary); font: 700 clamp(2.1rem, 3.6vw, 3.25rem)/1.05 "DM Sans"; letter-spacing: -.05em; text-transform: uppercase; }
.display-small span { color: transparent; -webkit-text-stroke: 1px var(--primary); }
.intro-heading h2, .papers-heading h2, .team-grid h2 {
  margin: 0 0 22px;
  font-size: clamp(1.75rem, 2.8vw, 2.7rem);
  line-height: 1.4;
  letter-spacing: -.035em;
}
.intro-heading h2, .papers-heading h2 { color: var(--primary); }
.intro-heading p { max-width: 710px; margin: 0 0 16px; color: #3f403c; }
.motivation-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2); margin-top: var(--space-6); }
.motivation-card { position: relative; display: grid; grid-template-columns: 52px minmax(0, 1fr); grid-template-rows: auto auto; gap: var(--space-1) var(--space-3); align-content: center; min-height: 145px; padding: var(--space-4) var(--space-3); color: var(--card-accent); background: var(--card-bg); border: 1px solid var(--card-accent); }
.palette-red { --card-bg: #fef1f0; --card-accent: #c82e40; }
.palette-orange { --card-bg: #fef5e6; --card-accent: #d56f03; }
.palette-green { --card-bg: #f2fff5; --card-accent: #17803b; }
.palette-blue { --card-bg: #f3f7ff; --card-accent: #3267ba; }
.motivation-no { position: absolute; top: var(--space-2); right: var(--space-2); font: 700 var(--text-xs) "DM Sans"; }
.motivation-icon { display: grid; grid-row: 1 / 3; width: 52px; height: 52px; place-items: center; align-self: center; background: rgba(255, 255, 255, .7); border: 1px solid currentColor; border-radius: var(--radius-control); transition: transform .2s ease; }
.motivation-card:hover .motivation-icon { transform: scale(1.05); }
.motivation-icon img { display: block; width: 38px; height: 38px; object-fit: contain; }
.motivation-card h3 { grid-column: 2; align-self: end; margin: 0; font-size: 1rem; }
.motivation-card p { grid-column: 2; align-self: start; margin: 0; font-size: .82rem; line-height: 1.6; }

.principles-section { max-width: none; padding: 68px max(48px, calc((100vw - var(--max)) / 2 + 48px)); color: var(--white); background: var(--primary); }
.section-label-light { color: var(--white); }
.principles-heading { display: grid; grid-template-columns: 1.45fr .55fr; gap: 60px; align-items: end; margin-bottom: 40px; }
.principles-heading h2 { margin: 0; font-size: clamp(1.8rem, 2.8vw, 2.8rem); line-height: 1.3; letter-spacing: -.04em; }
.principles-heading p { margin: 0; color: #d5dfff; font-size: .88rem; }
.principle-list { display: grid; grid-template-columns: 1fr; gap: var(--space-4); }
.principle-group { --card-count: 3; --group-surface: rgba(255, 255, 255, .06); --group-accent: #9cb9ff; display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: var(--space-3); min-width: 0; }
.group-method { --card-count: 2; --group-surface: rgba(255, 255, 255, .085); --group-accent: #b5caff; }
.group-experiments { --card-count: 1; --group-surface: rgba(255, 255, 255, .11); --group-accent: #ccdaff; }
.group-discussion { --card-count: 2; --group-surface: rgba(255, 255, 255, .14); --group-accent: #e0e8ff; }
.principle-group-heading { display: flex; flex-direction: column; gap: var(--space-2); align-items: flex-start; min-height: 100%; padding: var(--space-3); background: var(--group-surface); border-left: 4px solid var(--group-accent); }
.principle-group-heading span { color: var(--group-accent); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .08em; }
.principle-group-heading h3 { margin: 0; font: 700 .78rem/1.5 "DM Sans"; letter-spacing: .09em; }
.principle-group-cards { display: grid; grid-template-columns: repeat(var(--card-count), minmax(0, 1fr)); gap: var(--space-3); }
.principle-row { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: var(--space-3); align-self: stretch; padding: var(--space-4); border: 1px solid rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .055); }
.principle-row:last-child { border-bottom: 1px solid rgba(255, 255, 255, .28); }
.principle-index { color: #b9ceff; font: 600 var(--text-sm) "DM Sans"; }
.principle-name h4 { margin: 0; font-size: 1.14rem; line-height: 1.5; }
.principle-copy { display: block; grid-column: 2; }
.principle-copy p { margin: 0; color: #e8edff; font-size: .76rem; }
.principle-copy ul { margin: 0; padding-left: 1.15rem; color: #e8edff; font-size: .84rem; line-height: 1.75; }
.principle-copy li + li { margin-top: .45rem; }
.principle-copy li::marker { color: #b9ceff; }
.group-experiments .principle-copy { max-width: 75ch; }

.vlm-section { max-width: var(--max); padding: 36px 48px 44px; background: transparent; border-top: 1px solid var(--line); }
.vlm-section > .section-label { margin-bottom: 20px; color: var(--muted); }
.vlm-heading { display: grid; grid-template-columns: 1.35fr .65fr; gap: 48px; align-items: end; }
.vlm-heading .eyebrow { margin-bottom: 6px; font-size: .68rem; letter-spacing: .1em; }
.vlm-heading h2 { max-width: 760px; margin: 0; color: var(--primary); font-size: clamp(1.5rem, 2.1vw, 2.05rem); line-height: 1.35; letter-spacing: -.03em; }
.vlm-heading > p { max-width: 620px; margin: 0 0 4px; color: var(--muted); font-size: .82rem; line-height: 1.75; }
.vlm-method-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); align-items: stretch; margin-top: 14px; }
.vlm-conditions { overflow: hidden; padding: 0 var(--space-3) var(--space-3); background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-control); }
.vlm-block-label { display: flex; align-items: center; min-height: 52px; margin: 0 calc(var(--space-3) * -1) var(--space-2); padding: 0 var(--space-3); color: var(--primary); background: #f8faff; border-bottom: 1px solid var(--line); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .12em; }
.vlm-conditions dl { display: block; margin: 0; }
.vlm-conditions dl > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: var(--space-2); min-width: 0; padding: 10px 0; border-bottom: 1px solid var(--line); }
.vlm-conditions dt { color: var(--muted); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .06em; }
.vlm-conditions dd { margin: 0; color: #34405c; font-size: .74rem; font-weight: 500; line-height: 1.7; }
.prompt-panel { width: 100%; min-width: 0; overflow: hidden; color: var(--white); background: #041d5d; border: 1px solid #3456a7; border-radius: var(--radius-control); box-shadow: 5px 5px 0 rgba(7, 47, 144, .14); }
.prompt-toolbar { display: flex; align-items: center; justify-content: space-between; min-height: 52px; padding: 0 var(--space-3); background: #072f90; }
.prompt-title { display: flex; gap: var(--space-2); align-items: center; }
.prompt-title > span { font: 700 var(--text-xs) "DM Sans"; letter-spacing: .11em; }
.prompt-toolbar small { padding: 2px 8px; color: #dbe5ff; border: 1px solid rgba(255, 255, 255, .3); border-radius: var(--radius-pill); font: 500 .65rem "DM Sans"; }
.copy-prompt { display: inline-flex; flex: 0 0 100px; gap: 7px; align-items: center; justify-content: center; width: 100px; height: 34px; padding: 0 10px; color: var(--white); background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .48); border-radius: var(--radius-control); cursor: pointer; font-size: var(--text-xs); font-weight: 700; white-space: nowrap; transition: background .2s ease, color .2s ease; }
.copy-prompt:hover, .copy-prompt.is-copied { color: var(--primary); background: var(--white); }
.copy-prompt svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.7; }
.prompt-panel pre { margin: 0; padding: var(--space-3) var(--space-4); overflow: auto; color: #edf2ff; font: 500 .74rem/1.7 "Noto Sans JP", sans-serif; white-space: pre-wrap; overflow-wrap: anywhere; tab-size: 2; }
.vlm-output-panel { overflow: hidden; padding: 0 var(--space-3) var(--space-3); background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-control); }
.vlm-result-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); align-items: start; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.vlm-output-panel .vlm-result-list { grid-template-columns: 1fr; gap: var(--space-1); margin-top: 0; padding-top: 0; border-top: 0; }
.vlm-output-panel .vlm-result-card { box-shadow: none; }
.vlm-result-card { --result-accent: #9cb9ff; overflow: hidden; background: var(--white); border: 1px solid var(--line); border-top: 4px solid var(--result-accent); box-shadow: var(--shadow-soft); transition: border-color .2s ease, box-shadow .2s ease; }
.result-method { --result-accent: #b5caff; }
.result-experiments { --result-accent: #ccdaff; }
.result-discussion { --result-accent: #e0e8ff; }
.vlm-result-trigger { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-2); align-items: end; width: 100%; height: 72px; padding: 7px var(--space-2); color: inherit; background: linear-gradient(90deg, rgba(7, 47, 144, .055), transparent 70%); border: 0; cursor: pointer; font: inherit; text-align: left; transition: background .2s ease; }
.vlm-result-trigger:hover { background: #f8faff; }
.vlm-result-card.is-active { border-color: #9ab0dc; box-shadow: 0 0 0 2px rgba(7, 47, 144, .12); }
.vlm-result-card.is-active .vlm-result-trigger { background: #f8faff; }
.vlm-result-meta { display: flex; flex-direction: column; align-items: flex-start; }
.vlm-result-toggle { position: absolute; top: 8px; right: 8px; display: inline-flex; gap: 4px; align-items: center; min-height: 22px; padding: 2px 7px; color: var(--primary); background: #edf2ff; border: 1px solid #b8c9ef; border-radius: var(--radius-pill); font-size: .64rem; font-weight: 700; line-height: 1; transition: color .2s ease, background .2s ease, border-color .2s ease; }
.vlm-result-toggle b::before { content: "+"; }
.vlm-result-toggle .toggle-open { display: none; }
.vlm-result-card.is-active .vlm-result-toggle { color: var(--white); background: var(--primary); border-color: var(--primary); }
.vlm-result-card.is-active .vlm-result-toggle .toggle-closed { display: none; }
.vlm-result-card.is-active .vlm-result-toggle .toggle-open { display: inline; }
.vlm-result-card.is-active .vlm-result-toggle b::before { content: "−"; }
.vlm-section-tag { display: inline-flex; padding: 2px 6px; color: var(--primary); background: var(--result-accent); border-radius: var(--radius-pill); font: 700 .58rem/1.3 "DM Sans"; letter-spacing: .06em; white-space: nowrap; }
.vlm-result-title { margin-top: 3px; color: var(--primary); font: 700 clamp(.95rem, 1.3vw, 1.12rem)/1.2 "DM Sans", "Noto Sans JP", sans-serif; }
.vlm-result-count { margin-top: 1px; color: var(--muted); font-size: .64rem; }
.vlm-score { display: flex; flex: 0 0 auto; gap: 6px; align-items: baseline; min-width: 125px; color: var(--primary); }
.vlm-score strong { font: 700 2.8rem/1 "DM Sans"; letter-spacing: -.06em; }
.vlm-score span { font: 600 .78rem "DM Sans"; }
.vlm-result-list .vlm-score { min-width: auto; }
.vlm-result-list .vlm-score strong { font-size: 1.5rem; }
.vlm-result-list .vlm-score span { font-size: .64rem; }
.vlm-findings { border-top: 1px solid var(--line); }
.vlm-finding { background: var(--white); border-bottom: 1px solid var(--line); }
.vlm-finding:last-child { border-bottom: 0; }
.vlm-finding summary { position: relative; display: grid; grid-template-columns: 36px 1fr 24px; gap: var(--space-3); align-items: center; padding: 17px var(--space-5); cursor: pointer; font-size: .84rem; font-weight: 700; line-height: 1.7; list-style: none; }
.vlm-finding summary::-webkit-details-marker { display: none; }
.vlm-finding summary > span { color: var(--primary); font: 700 var(--text-xs) "DM Sans"; }
.vlm-finding summary::after { display: grid; width: 24px; height: 24px; place-items: center; color: var(--primary); background: #edf2ff; border-radius: 50%; content: "+"; font: 700 .9rem/1 "DM Sans"; }
.vlm-finding[open] summary::after { color: var(--white); background: var(--primary); content: "−"; }
.vlm-finding summary:hover { color: var(--primary); background: #f8faff; }
.vlm-finding > p { margin: 0; padding: 0 72px 20px 84px; color: #44506c; font-size: .82rem; line-height: 1.9; }
.vlm-result-list .vlm-finding summary { grid-template-columns: 24px minmax(0, 1fr) 24px; gap: var(--space-1); padding: 14px var(--space-3); font-size: .78rem; }
.vlm-result-list .vlm-finding > p { padding: 0 var(--space-3) 18px 48px; font-size: .76rem; }
.vlm-output-detail { margin-top: var(--space-3); overflow: hidden; background: var(--white); border: 1px solid #9ab0dc; border-top: 3px solid var(--primary); border-radius: var(--radius-control); box-shadow: var(--shadow-soft); }
.vlm-output-detail[hidden] { display: none; }
.vlm-output-detail > header { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: var(--space-4); align-items: center; padding: var(--space-3) var(--space-4); background: #f8faff; }
.vlm-output-detail > header > div > span { display: block; color: var(--muted); font: 700 .64rem "DM Sans"; letter-spacing: .1em; }
.vlm-output-detail h3 { margin: 3px 0 0; color: var(--primary); font: 700 1.25rem/1.3 "DM Sans", "Noto Sans JP", sans-serif; }
.vlm-output-detail > header > p { margin: 0; color: var(--primary); font: 700 .72rem "DM Sans", "Noto Sans JP", sans-serif; }
.vlm-detail-close { display: inline-flex; gap: 7px; align-items: center; padding: 6px 10px; color: var(--primary); background: var(--white); border: 1px solid #9ab0dc; border-radius: var(--radius-pill); cursor: pointer; font-size: .7rem; font-weight: 700; }
.vlm-detail-close:hover { color: var(--white); background: var(--primary); border-color: var(--primary); }
.vlm-shared-findings { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3); padding: var(--space-3); border-top: 1px solid var(--line); }
.vlm-shared-findings .vlm-finding { overflow: hidden; border: 1px solid var(--line); border-radius: 6px; }
.vlm-shared-findings .vlm-finding summary { grid-template-columns: 26px minmax(0, 1fr) 24px; gap: var(--space-2); padding: 13px var(--space-3); font-size: .78rem; }
.vlm-shared-findings .vlm-finding > p { padding: 0 var(--space-3) 16px 50px; font-size: .76rem; }
.vlm-results-note { margin-top: var(--space-2); padding-top: var(--space-2); color: var(--muted); border-top: 1px solid var(--line); font-size: .7rem; line-height: 1.65; }
.vlm-results-note strong { color: var(--primary); font-weight: 700; }

.papers-section { border-top: 0; }
.papers-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: end; padding-bottom: var(--space-4); border-bottom: 1px solid var(--line); }
.papers-heading h2 { margin-bottom: 0; font-size: clamp(1.9rem, 3.2vw, 3rem); line-height: 1.25; letter-spacing: -.03em; }
.papers-heading > p { max-width: 52ch; margin: 0 0 5px; color: var(--muted); font-size: .82rem; line-height: 1.8; }
.paper-toolbar { margin-top: 40px; }
.paper-controls { display: grid; grid-template-columns: 1fr auto; gap: var(--space-2); }
.search-box { display: flex; align-items: center; min-height: 58px; padding: 0 var(--space-3); background: var(--white); border: 1px solid var(--ink); border-radius: var(--radius-control); }
.search-box svg { width: 21px; height: 21px; margin-right: 13px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.search-box input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; }
.search-box kbd { padding: 2px var(--space-1); color: var(--muted); background: var(--paper); border: 1px solid var(--line); border-radius: 4px; font: 500 var(--text-xs) "DM Sans"; }
.sort-box { display: flex; gap: var(--space-2); align-items: center; padding: 0 var(--space-3); background: var(--white); border: 1px solid var(--ink); border-radius: var(--radius-control); font-size: var(--text-xs); font-weight: 600; }
.sort-box select { border: 0; outline: 0; background: transparent; font-size: .75rem; }
.filter-groups { display: grid; gap: var(--space-2); margin: var(--space-3) 0 40px; }
.filter-group { display: grid; grid-template-columns: 110px 1fr; gap: var(--space-3); align-items: start; }
.filter-label { padding-top: var(--space-1); color: var(--muted); font-size: .74rem; font-weight: 700; }
.field-filters, .motivation-filters { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.filter-button { padding: 7px 14px; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: var(--radius-pill); cursor: pointer; font-size: var(--text-xs); font-weight: 600; }
.filter-button:hover, .filter-button.is-active { background: var(--lime); border-color: var(--ink); }
.motivation-filter:not(:first-child) { color: var(--card-accent); background: var(--card-bg); border-color: var(--card-accent); }
.motivation-filter:not(:first-child):hover, .motivation-filter:not(:first-child).is-active { color: var(--white); background: var(--card-accent); border-color: var(--card-accent); }
.paper-result-bar { display: flex; align-items: center; justify-content: space-between; padding: 17px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.paper-result-bar p { margin: 0; font: 600 .72rem "DM Sans"; letter-spacing: .06em; text-transform: uppercase; }
.paper-result-bar strong { font-size: 1.05rem; }
.paper-result-bar button { padding: 0; color: var(--muted); background: none; border: 0; cursor: pointer; font-size: var(--text-xs); text-decoration: underline; text-underline-offset: 4px; }
.paper-item { display: grid; grid-template-columns: 54px minmax(0, 1fr) 150px 250px; gap: var(--space-3); align-items: start; padding: var(--space-4) 0; border-bottom: 1px solid var(--line); }
.paper-number { padding-top: 5px; color: var(--muted); font: 600 var(--text-xs) "DM Sans"; }
.paper-title { margin: 0; font: 600 clamp(.94rem, 1.5vw, 1.12rem)/1.55 "DM Sans", "Noto Sans JP", sans-serif; letter-spacing: -.015em; }
.paper-authors { max-width: 800px; margin: var(--space-1) 0 0; color: var(--muted); font-size: .75rem; line-height: 1.65; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.paper-meta { display: flex; flex-direction: column; gap: 4px; padding-top: 3px; font: 600 .74rem "DM Sans", "Noto Sans JP"; }
.paper-meta span:last-child { color: var(--muted); font-weight: 500; }
.paper-meta .paper-motivation { align-self: flex-start; margin-top: 3px; padding: 3px var(--space-1); color: var(--card-accent); background: var(--card-bg); border: 1px solid var(--card-accent); border-radius: var(--radius-pill); font-size: var(--text-xs); font-weight: 700; white-space: nowrap; }
.paper-toggle { display: flex; gap: var(--space-1); align-items: center; justify-content: space-between; min-width: 250px; min-height: 46px; padding: var(--space-1) var(--space-2); color: var(--primary); background: #f3f7ff; border: 1px solid #9ab0dc; border-radius: var(--radius-control); cursor: pointer; transition: transform .2s ease, box-shadow .2s ease, color .2s ease, background .2s ease; }
.paper-toggle-copy { text-align: left; font-size: var(--text-xs); font-weight: 700; line-height: 1.45; white-space: nowrap; }
.paper-toggle-icon { display: grid; flex: 0 0 26px; width: 26px; height: 26px; place-items: center; color: var(--white); background: var(--primary); border-radius: 50%; font-size: .9rem; line-height: 1; }
.paper-toggle:hover { background: #f3f7ff; box-shadow: var(--shadow-action); transform: translate(-2px, -2px); }
.paper-item.is-open .paper-toggle { color: var(--white); background: var(--primary); box-shadow: none; }
.paper-item.is-open .paper-toggle-icon { color: var(--primary); background: var(--white); }
.paper-details { display: none; grid-column: 2 / -1; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: var(--space-5); padding: var(--space-4); background: var(--white); border-left: 4px solid var(--lime); }
.paper-item.is-open .paper-details { display: grid; animation: paper-details-in .24s ease-out both; }
.paper-item.is-closing .paper-details { animation: paper-details-out .18s ease-in both; }
.detail-block span { display: block; margin-bottom: var(--space-1); color: var(--muted); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .08em; }
.detail-block p { margin: 0; font-size: .86rem; line-height: 1.85; white-space: pre-line; }
.clarity-note { position: relative; padding: 18px 20px; background: #f3f7ff; border-left: 3px solid var(--primary); }
.clarity-note::before { position: absolute; top: 5px; right: 12px; color: rgba(7, 47, 144, .13); content: "“"; font: 700 3rem/1 Georgia, serif; }
.clarity-note p { position: relative; max-width: 76ch; }
.paper-external { display: inline-flex; gap: var(--space-1); align-items: center; margin-top: var(--space-2); font-size: .74rem; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.detail-placeholder { color: #8b8c85; }
.empty-state { padding: 80px 20px; text-align: center; }
.empty-state strong { font-size: 1.15rem; }
.empty-state p { color: var(--muted); font-size: .82rem; }
.load-more { display: flex; gap: var(--space-1); align-items: center; justify-content: center; width: 100%; margin-top: var(--space-5); padding: var(--space-2); background: transparent; border: 1px solid var(--ink); border-radius: var(--radius-pill); cursor: pointer; font-size: var(--text-sm); font-weight: 700; }
.load-more:hover { background: var(--lime); }
.load-more[hidden] { display: none; }

@keyframes paper-details-in {
  from { opacity: 0; transform: translateY(-7px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes paper-details-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-7px); }
}

@media (min-width: 961px) {
  .paper-toolbar {
    position: sticky;
    z-index: 12;
    top: 12px;
    margin-bottom: 40px;
    padding: 14px 16px;
    background: rgba(247, 249, 255, .94);
    border: 1px solid var(--line);
    border-radius: var(--radius-control);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(12px);
  }
  .paper-toolbar .filter-groups { margin: 14px 0 0; }
}

.team-section { max-width: none; padding: 48px max(48px, calc((100vw - var(--max)) / 2 + 48px)) 44px; color: var(--white); background: var(--primary); }
.team-section > .section-label { margin-bottom: var(--space-4); }
.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.team-grid h2 { margin-bottom: 0; font-size: clamp(1.75rem, 2.8vw, 2.75rem); }
.team-copy > p { margin-top: 0; color: #d8d8f0; font-size: .86rem; line-height: 1.75; }
.members { font-size: .78rem; }
.members span { display: block; margin-bottom: 6px; color: var(--lime); font: 700 var(--text-xs) "DM Sans"; letter-spacing: .1em; text-transform: uppercase; }
.resource-links { margin-top: 26px; border-top: 1px solid rgba(255,255,255,.35); }
.resource-links a { display: grid; grid-template-columns: 32px 1fr auto; gap: 12px; align-items: center; padding: 11px 0; border-bottom: 1px solid rgba(255,255,255,.35); font-size: .8rem; }
.resource-links a:hover { color: var(--lime); }
.resource-links span { font: 600 var(--text-xs) "DM Sans"; opacity: .65; }
.resource-links b { font: 600 var(--text-xs) "DM Sans"; }

footer { display: flex; align-items: center; justify-content: space-between; padding: 45px max(28px, calc((100vw - var(--max)) / 2 + 28px)); background: #041d5d; color: var(--white); }
footer p, footer > a:last-child { font: 500 var(--text-xs) "DM Sans"; letter-spacing: .07em; }
.brand-footer .brand-logo { background: var(--white); border-radius: 5px; }

@media (max-width: 1100px) {
  .site-nav { gap: 16px; }
}

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 55px; padding-top: 65px; }
  .hero-card { max-width: 430px; }
  .motivation-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-group { grid-template-columns: 1fr; gap: var(--space-2); }
  .principle-group-heading { flex-direction: row; align-items: center; min-height: auto; padding: var(--space-3); }
  .principle-group .principle-group-cards { grid-template-columns: 1fr; }
  .principle-row { grid-template-columns: 44px minmax(0, 1fr); }
  .vlm-heading { gap: 45px; }
  .vlm-method-grid { grid-template-columns: 1fr; align-items: start; }
  .vlm-conditions dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3) var(--space-4); margin-top: 0; }
  .vlm-conditions dl > div { display: block; padding: 0 var(--space-3); border-bottom: 0; border-left: 1px solid var(--line); }
  .vlm-conditions dl > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .vlm-conditions dd { margin-top: 5px; }
  .vlm-output-panel .vlm-result-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .vlm-result-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .team-grid { gap: 44px; }
}

@media (max-width: 760px) {
  .site-header { min-height: 70px; padding: 0 20px; }
  .menu-button { display: flex; flex-direction: column; gap: 5px; padding: 10px; cursor: pointer; }
  .menu-button span:not(.sr-only) { display: block; width: 22px; height: 1px; background: var(--ink); transition: .2s ease; }
  .menu-button[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-button[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .site-nav { position: absolute; top: 70px; right: 0; left: 0; display: none; flex-direction: column; gap: 0; align-items: stretch; padding: 12px 20px 20px; background: var(--paper); border-bottom: 1px solid var(--ink); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 13px 4px; }
  .site-nav .nav-cta { margin-top: 8px; padding: 10px 16px; text-align: center; }
  .hero { min-height: auto; padding: 48px 22px 58px; }
  .hero h1 { font-size: clamp(2.3rem, 10.5vw, 3.6rem); }
  .hero-lead { font-size: .9rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-card { display: none; }
  .section, .principles-section, .vlm-section, .team-section { padding: 60px 22px; }
  .vlm-section { padding-top: 34px; padding-bottom: 40px; }
  .team-section { padding-top: 42px; padding-bottom: 40px; }
  .section-label { margin-bottom: 48px; }
  .intro-heading, .principles-heading, .vlm-heading, .papers-heading, .team-grid { grid-template-columns: 1fr; gap: 40px; }
  .vlm-heading { gap: var(--space-3); }
  .team-grid { gap: 28px; }
  .display-small { font-size: 2.3rem; }
  .motivation-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 36px; }
  .motivation-card { min-height: 140px; padding: var(--space-4) var(--space-3); }
  .principles-heading { margin-bottom: 45px; }
  .principle-row { grid-template-columns: 38px 1fr; gap: 16px; }
  .principle-copy { grid-column: 2; }
  .principle-name h4 { font-size: 1.2rem; }
  .vlm-conditions { padding: 0 var(--space-3) var(--space-3); }
  .vlm-conditions dl { display: block; }
  .vlm-conditions dl > div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: var(--space-2); padding: 10px 0; border-bottom: 1px solid var(--line); border-left: 0; }
  .vlm-conditions dd { margin-top: 0; }
  .prompt-panel pre { max-height: none; padding: var(--space-4); font-size: .74rem; }
  .vlm-output-panel .vlm-result-list { grid-template-columns: 1fr; }
  .vlm-result-list { grid-template-columns: 1fr; }
  .vlm-output-detail > header { grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-1) var(--space-3); padding: var(--space-3); }
  .vlm-output-detail > header > p { grid-column: 1; }
  .vlm-detail-close { grid-column: 2; grid-row: 1 / 3; }
  .vlm-shared-findings { grid-template-columns: 1fr; padding: var(--space-2); }
  .vlm-result-trigger { height: auto; min-height: 70px; padding: 7px var(--space-2); }
  .vlm-finding summary { grid-template-columns: 28px 1fr 24px; gap: var(--space-2); padding: 16px var(--space-4); }
  .vlm-finding > p { padding: 0 var(--space-4) 20px 64px; }
  .paper-controls { grid-template-columns: 1fr; }
  .filter-group { grid-template-columns: 1fr; gap: 6px; }
  .filter-label { padding-top: 0; }
  .sort-box { min-height: 48px; justify-content: space-between; }
  .search-box kbd { display: none; }
  .paper-item { grid-template-columns: 34px minmax(0, 1fr); gap: var(--space-2); }
  .paper-meta { grid-column: 2; flex-flow: row wrap; gap: 8px 12px; align-items: center; }
  .paper-meta .paper-motivation { margin-top: 0; }
  .paper-toggle { grid-column: 2; grid-row: 3; justify-self: start; width: 100%; min-width: 0; max-width: 250px; min-height: 46px; gap: 6px; padding: var(--space-1); }
  .paper-toggle-copy { font-size: var(--text-xs); line-height: 1.4; }
  .paper-toggle-icon { flex-basis: 20px; width: 20px; height: 20px; font-size: .78rem; }
  .paper-details { grid-column: 2 / -1; grid-template-columns: 1fr; gap: 22px; }
  footer { flex-direction: column; gap: 24px; align-items: flex-start; }
}

@media (max-width: 420px) {
  .brand { font-size: var(--text-xs); }
  .brand-logo { width: 62px; height: 47px; }
  .hero { padding-right: 18px; padding-left: 18px; }
  .hero h1 { letter-spacing: -.055em; }
  .score-row strong { font-size: 1.4rem; }
  .motivation-grid { grid-template-columns: 1fr; }
  .prompt-toolbar { padding: 0 var(--space-3); }
  .prompt-toolbar small { display: none; }
  .vlm-result-trigger { grid-template-columns: minmax(0, 1fr) auto; align-items: end; padding-right: var(--space-3); }
  .vlm-section-tag { font-size: .56rem; letter-spacing: .04em; }
  .vlm-result-toggle .toggle-wide { display: none; }
  .vlm-score { min-width: auto; }
  .vlm-score strong { font-size: 2.2rem; }
  .vlm-finding > p { padding-left: var(--space-4); }
  .paper-result-bar { align-items: flex-start; }
}