:root {
  --bg: #f5f7fb;
  --surface: rgba(255, 255, 255, .86);
  --surface-solid: #ffffff;
  --text: #172033;
  --muted: #5c6475;
  --line: rgba(23, 32, 51, .10);
  --shadow: 0 18px 48px rgba(20, 32, 51, .10);
  --radius-lg: 28px;
  --radius-md: 20px;
  --max: 1160px;
  --blue: #2757d4;
  --navy: #1e2f78;
  --green: #21a55b;
  --orange: #f68a25;
  --pink: #db4d72;
  --gold: #f2b113;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font: 16px/1.75 "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 8% 0%, rgba(39, 87, 212, .10), transparent 24%),
    radial-gradient(circle at 88% 12%, rgba(242, 177, 19, .14), transparent 21%),
    linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; }

:focus-visible {
  outline: 3px solid rgba(39, 87, 212, .28);
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(245, 247, 251, .86);
  border-bottom: 1px solid rgba(255, 255, 255, .8);
  backdrop-filter: blur(18px);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 50px;
  height: 50px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 16px;
  padding: 8px;
  background: linear-gradient(145deg, rgba(255,255,255,.96), rgba(244,247,255,.78));
  border: 1px solid rgba(39, 87, 212, .08);
  box-shadow: 0 10px 26px rgba(39, 87, 212, .10);
  overflow: hidden;
}

.brand-text { min-width: 0; }

.brand-title,
.brand-subtitle {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-title {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: .02em;
}

.brand-subtitle {
  margin-top: 1px;
  color: var(--muted);
  font-size: .88rem;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  font-weight: 700;
  padding: 9px 13px;
  border-radius: 999px;
  transition: color .2s ease, background .2s ease, box-shadow .2s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,.9);
  box-shadow: 0 8px 20px rgba(20,32,51,.07);
}

.nav-links .nav-community {
  margin-left: 5px;
  padding-inline: 17px;
  color: #fff;
  background: linear-gradient(100deg, var(--blue), #3f7cf2 56%, #438fe8);
  box-shadow: 0 10px 24px rgba(39,87,212,.22);
}

.nav-links .nav-community:hover {
  color: #fff;
  background: linear-gradient(100deg, #214bc1, #3471e8 56%, #3683dc);
  box-shadow: 0 14px 28px rgba(39,87,212,.28);
}

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 14px;
  color: var(--text);
  background: var(--surface-solid);
  box-shadow: 0 12px 28px rgba(20,32,51,.10);
  cursor: pointer;
}

.hero { padding: clamp(28px, 6vw, 56px) 0 24px; }

.hero-card {
  position: relative;
  overflow: hidden;
  border-radius: 34px;
  padding: clamp(24px, 5vw, 48px);
  background:
    linear-gradient(135deg, rgba(255,255,255,.96), rgba(255,255,255,.76)),
    linear-gradient(120deg, rgba(39,87,212,.10), rgba(242,177,19,.12) 36%, rgba(33,165,91,.10) 70%);
  border: 1px solid rgba(255,255,255,.92);
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(39,87,212,.12), transparent 66%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--navy);
  font-weight: 800;
  background: rgba(255,255,255,.74);
  border: 1px solid rgba(39,87,212,.12);
  box-shadow: 0 10px 25px rgba(39,87,212,.08);
}

.eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.hero-wordmark {
  width: min(100%, 760px);
  margin: 22px 0 18px;
  padding: clamp(9px, 1.7vw, 14px);
  border-radius: 22px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: 0 18px 40px rgba(20,32,51,.08);
}

.hero-wordmark img {
  width: 100%;
  border-radius: 14px;
}

.hero-title {
  margin: 0;
  max-width: 14em;
  font-size: clamp(2rem, 5.5vw, 3.55rem);
  line-height: 1.12;
  letter-spacing: -.03em;
}

.hero-title .accent {
  background: linear-gradient(90deg, var(--blue), var(--green), var(--orange), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  max-width: 62ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.08rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .22s ease, background .22s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(20,32,51,.12);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(90deg, var(--blue), #3a7fff 58%, #47a0ff);
}

.btn-community {
  min-width: 190px;
  min-height: 52px;
  box-shadow: 0 14px 30px rgba(39,87,212,.24);
}

.btn-community span {
  margin-left: 4px;
  font-size: 1.08em;
  transition: transform .18s ease;
}

.btn-community:hover span { transform: translateX(3px); }

.btn-secondary {
  color: var(--text);
  background: rgba(255,255,255,.84);
  border-color: rgba(20,32,51,.08);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 13px;
  border-radius: 999px;
  color: var(--text);
  font-weight: 700;
  background: rgba(255,255,255,.76);
  border: 1px solid var(--line);
}

.section { padding: clamp(22px, 5vw, 40px) 0; }

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.section-kicker {
  color: var(--blue);
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
}

.section-title {
  margin: 0;
  font-size: clamp(1.55rem, 3.4vw, 2.3rem);
  line-height: 1.22;
  letter-spacing: -.02em;
}

.section-subtitle {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card,
.panel {
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.card {
  padding: clamp(20px, 3vw, 26px);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 16px;
  border-radius: 16px;
  color: white;
  font-size: 1.08rem;
  font-weight: 900;
  box-shadow: 0 14px 28px rgba(20,32,51,.12);
}

.icon-purpose { background: linear-gradient(135deg, var(--blue), #3aa2ff); }
.icon-core { background: linear-gradient(135deg, var(--gold), var(--orange)); }
.icon-method { background: linear-gradient(135deg, var(--green), #48c37a); }

.card h3 {
  margin: 0 0 8px;
  font-size: 1.16rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 13px;
  border-radius: 999px;
  background: rgba(255,255,255,.78);
  border: 1px solid var(--line);
  font-weight: 800;
  color: var(--text);
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 18px;
  align-items: stretch;
}

.panel {
  padding: clamp(22px, 3.5vw, 30px);
}

.info-list {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.info-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px;
  border-radius: 18px;
  background: rgba(246,247,251,.86);
  border: 1px solid rgba(20,32,51,.06);
}

.info-no {
  width: 56px;
  height: 56px;
  display: inline-grid;
  place-items: center;
  border-radius: 17px;
  color: #fff;
  font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--pink));
  box-shadow: 0 12px 24px rgba(39,87,212,.16);
}

.info-item h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.info-item p {
  margin: 0;
  color: var(--muted);
  font-size: .96rem;
}

.date-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--navy);
  font-weight: 900;
  background: linear-gradient(90deg, rgba(39,87,212,.08), rgba(242,177,19,.11), rgba(219,77,114,.09));
}

.logo-layout {
  display: grid;
  grid-template-columns: minmax(118px, 188px) 1fr;
  gap: 20px;
  align-items: center;
  margin-top: 20px;
}

.logo-frame {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 16px;
  border-radius: 24px;
  background: linear-gradient(180deg, #fff, #f8f9fd);
  border: 1px solid rgba(20,32,51,.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.85), 0 14px 34px rgba(20,32,51,.06);
  overflow: hidden;
}

.logo-points {
  display: grid;
  gap: 12px;
}

.logo-point {
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(246,247,251,.86);
  border: 1px solid rgba(20,32,51,.06);
}

.logo-point strong {
  display: block;
  margin-bottom: 3px;
}

.logo-point span {
  display: block;
  color: var(--muted);
  font-size: .95rem;
}

.council-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.council-card {
  min-width: 0;
  padding: 22px 18px;
  text-align: center;
  border-radius: 22px;
  background: var(--surface-solid);
  border: 1px solid rgba(255,255,255,.95);
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .22s ease;
}

.council-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 44px rgba(20,32,51,.14);
}

.council-avatar {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  margin: 0 auto 14px;
  border-radius: 22px;
  color: #fff;
  font-weight: 900;
  font-size: 1.16rem;
  background: linear-gradient(135deg, var(--blue), var(--green), var(--orange), var(--pink));
  box-shadow: 0 16px 30px rgba(39,87,212,.16);
}

.council-name {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.35;
  font-weight: 900;
  word-break: break-word;
}

.council-role {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: .92rem;
  font-weight: 700;
}

.footer { padding: 30px 0 46px; }

.footer-card {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: clamp(24px, 4vw, 34px);
  color: white;
  background: linear-gradient(135deg, rgba(30,47,120,.96), rgba(39,87,212,.94) 45%, rgba(33,165,91,.86) 72%, rgba(242,138,37,.88));
  box-shadow: 0 24px 50px rgba(24, 35, 91, .24);
}

.footer-card::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -120px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  pointer-events: none;
}

.footer-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
  gap: clamp(22px, 4vw, 42px);
  align-items: stretch;
}

.footer h3 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.footer p {
  max-width: 58ch;
  margin: 0;
  color: rgba(255,255,255,.88);
}

.official-links,
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.official-links { margin-top: 18px; }

.footer-meta {
  justify-content: flex-start;
  align-items: center;
  margin-top: 12px;
}

.official-link,
.footer-badge,
.footer-visit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  font-weight: 800;
}

.official-link,
.footer-badge {
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
}

.official-link {
  transition: transform .18s ease, background .2s ease;
}

.official-link:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.22);
}

.footer-visit {
  width: 100%;
  min-height: 54px;
  padding-inline: 20px 12px;
  justify-content: space-between;
  color: #fff;
  background: linear-gradient(100deg, var(--blue), #3978ec 60%, #3692df);
  box-shadow: 0 14px 30px rgba(22, 48, 133, .24);
  transition: transform .18s ease, box-shadow .2s ease;
}

.footer-visit:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(13, 24, 73, .24);
}

.community-entry {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: clamp(20px, 3vw, 28px);
  border-radius: 24px;
  color: var(--text);
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(255,255,255,.98);
  box-shadow: 0 20px 44px rgba(13,24,73,.18);
}

.community-entry-kicker {
  color: var(--blue);
  font-size: .75rem;
  font-weight: 900;
  letter-spacing: .11em;
}

.community-entry strong {
  display: block;
  margin: 7px 0 6px;
  font-size: clamp(1.12rem, 2vw, 1.38rem);
  line-height: 1.45;
}

.footer .community-entry p {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: .94rem;
}

.footer-visit-arrow {
  width: 34px;
  height: 34px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.18);
  transition: transform .18s ease, background .18s ease;
}

.footer-visit:hover .footer-visit-arrow {
  transform: translateX(3px);
  background: rgba(255,255,255,.25);
}

@media (max-width: 1080px) {
  .feature-layout,
  .footer-layout { grid-template-columns: 1fr; }
  .council-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .nav { min-height: 70px; }

  .menu-button {
    display: inline-grid;
    place-items: center;
  }

  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 10px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 10px;
    border-radius: 20px;
    background: rgba(255,255,255,.96);
    border: 1px solid rgba(255,255,255,.98);
    box-shadow: 0 20px 45px rgba(20,32,51,.12);
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    padding: 12px 14px;
    border-radius: 14px;
  }

  .nav-links .nav-community {
    margin-left: 0;
    text-align: center;
  }

  .grid-3,
  .logo-layout { grid-template-columns: 1fr; }
  .logo-frame { max-width: 220px; }
  .council-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 560px) {
  .container { width: min(calc(100% - 20px), var(--max)); }
  .brand { gap: 10px; }
  .brand-mark { width: 44px; height: 44px; border-radius: 14px; }
  .brand-title { font-size: .98rem; }
  .brand-subtitle { font-size: .80rem; }
  .hero-card,
  .card,
  .panel,
  .footer-card { border-radius: 22px; }
  .hero-wordmark { margin-block: 18px 16px; border-radius: 18px; }
  .hero-actions .btn { width: 100%; }
  .hero-tags .tag { width: 100%; justify-content: center; }
  .info-item { grid-template-columns: 48px 1fr; padding: 12px; }
  .info-no { width: 48px; height: 48px; border-radius: 15px; }
  .council-grid { grid-template-columns: 1fr; }
  .official-links,
  .footer-meta { flex-direction: column; align-items: stretch; }
  .official-link,
  .footer-badge { width: 100%; }
  .community-entry { padding: 19px; border-radius: 19px; }
}

@media (max-width: 390px) {
  .brand-title { max-width: 190px; }
  .brand-subtitle { max-width: 170px; }
  .hero-card { padding-inline: 18px; }
  .hero-title { font-size: 1.9rem; }
  .footer-card { padding-inline: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}


/* 2026-09 research-team visual refinement: restrained, formal, light, and responsive. */
:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-solid: #ffffff;
  --text: #142033;
  --muted: #667085;
  --line: #dfe6ef;
  --shadow: 0 12px 32px rgba(26, 44, 78, .075);
  --radius-lg: 22px;
  --radius-md: 16px;
  --blue: #2457c5;
  --navy: #17366f;
}
body { background: linear-gradient(180deg, #fbfcfe 0%, #f4f7fb 52%, #f8fafc 100%); }
.site-header { background: rgba(250, 252, 255, .96); border-bottom: 1px solid #e4e9f0; backdrop-filter: none; -webkit-backdrop-filter: none; }
.brand-mark { border-radius: 13px; background: #fff; border-color: #e1e7ef; box-shadow: 0 5px 16px rgba(23,54,111,.06); }
.nav-links a { border-radius: 9px; }
.nav-links a:hover { box-shadow: none; background: #f0f4fa; }
.nav-links .nav-community, .nav-links .nav-community:hover { background: var(--navy); box-shadow: none; }
.menu-button { border: 1px solid #dfe6ef; box-shadow: none; }
.hero { padding-top: clamp(26px, 5vw, 50px); }
.hero-card { border-radius: 26px; background: #fff; border: 1px solid #e0e7f0; box-shadow: var(--shadow); }
.hero-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: linear-gradient(180deg, var(--blue), var(--green), var(--gold), var(--pink)); }
.hero-card::after { width: 245px; height: 245px; right: -90px; bottom: -155px; background: rgba(36,87,197,.055); }
.eyebrow { border-radius: 8px; background: #f5f8fc; border-color: #e1e7ef; box-shadow: none; }
.hero-wordmark { border-radius: 16px; background: #fafbfd; border-color: #e4e9f0; box-shadow: none; }
.hero-title .accent { color: var(--blue); background: none; -webkit-text-fill-color: currentColor; }
.btn { border-radius: 10px; }
.btn-primary, .btn-primary:hover { background: var(--navy); box-shadow: none; }
.btn-secondary { background: #fff; border-color: #dce3ec; box-shadow: none; }
.btn-secondary:hover { background: #f6f8fb; box-shadow: none; }
.tag { border-radius: 8px; background: #f7f9fc; }
.section { padding: 38px 0; }
.section-head { padding-left: 16px; border-left: 3px solid #dbe5f8; }
.card, .panel { background: #fff; border-color: #e0e7f0; box-shadow: 0 8px 24px rgba(26,44,78,.06); backdrop-filter: none; -webkit-backdrop-filter: none; }
.card-icon { border-radius: 11px; box-shadow: none; }
.icon-purpose { background: #2457c5; }
.icon-core { background: #b57b0b; }
.icon-method { background: #218451; }
.pill { border-radius: 8px; background: #f7f9fc; }
.info-item, .logo-point { border-radius: 12px; background: #f8fafc; border-color: #e7ecf2; }
.info-no { border-radius: 10px; background: var(--navy); box-shadow: none; }
.date-chip { border-radius: 8px; color: #234d9c; background: #edf3ff; }
.logo-frame { border-radius: 16px; background: #fafbfd; border-color: #e0e7f0; box-shadow: none; }
.council-card { border-radius: 16px; border-color: #e0e7f0; box-shadow: 0 6px 18px rgba(26,44,78,.05); }
.council-card:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(26,44,78,.075); }
.council-avatar { border-radius: 13px; background: var(--navy); box-shadow: none; }
.footer-card { border-radius: 22px; background: #17366f; box-shadow: 0 14px 34px rgba(23,54,111,.15); }
.footer-card::after { background: rgba(255,255,255,.07); }
.community-entry { border-radius: 16px; border-color: rgba(255,255,255,.92); box-shadow: none; }
.official-link, .footer-badge, .footer-visit { border-radius: 9px; }
.footer-visit, .footer-visit:hover { background: #2457c5; box-shadow: none; }
.footer-visit-arrow { border-radius: 8px; }
@media (max-width: 1080px) { .hero-content { max-width: 760px; } }
@media (max-width: 860px) {
  .nav-links { border: 1px solid #dfe6ef; border-radius: 14px; background: #fff; box-shadow: 0 12px 28px rgba(26,44,78,.10); }
  .nav-links a { border-radius: 9px; }
  .grid-3 { gap: 14px; }
}
@media (max-width: 640px) {
  .container { width: min(calc(100% - 24px), var(--max)); }
  .hero { padding-top: 20px; }
  .hero-card { padding: 24px 20px; border-radius: 20px; }
  .hero-wordmark { padding: 8px; }
  .hero-desc { font-size: .98rem; }
  .section { padding: 30px 0; }
  .section-head { padding-left: 12px; }
  .card, .panel { border-radius: 17px; }
  .council-grid { gap: 12px; }
}
@media (max-width: 440px) {
  .container { width: min(calc(100% - 16px), var(--max)); }
  .brand-title { max-width: 48vw; }
  .brand-subtitle { max-width: 44vw; }
  .hero-card { padding-inline: 17px; }
  .hero-title { font-size: 1.85rem; }
  .council-card { padding: 18px 14px; }
}


/* 2026-09 r4 visual polish: research-institute clarity across desktop, tablet, and mobile. */
:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-solid: #ffffff;
  --text: #122038;
  --muted: #637087;
  --line: #dce4ef;
  --blue: #2459c7;
  --navy: #173a78;
  --shadow: 0 16px 38px rgba(23, 52, 98, .085);
}
body {
  background-color: #f5f8fc;
  background-image:
    linear-gradient(rgba(31, 67, 125, .024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 67, 125, .024) 1px, transparent 1px),
    linear-gradient(180deg, #fbfdff 0%, #f3f6fb 52%, #f8fafc 100%);
  background-size: 32px 32px, 32px 32px, auto;
}
.site-header {
  background: rgba(252, 253, 255, .97);
  border-bottom-color: #dfe6ef;
  box-shadow: 0 3px 16px rgba(29, 54, 91, .035);
}
.nav { min-height: 78px; }
.brand-mark {
  width: 52px;
  height: 52px;
  padding: 7px;
  border-radius: 15px;
  border-color: #dbe4f0;
  background: linear-gradient(145deg, #ffffff, #f5f8fc);
  box-shadow: 0 7px 20px rgba(23, 58, 120, .08), inset 0 0 0 1px rgba(255,255,255,.82);
}
.brand-title { color: #142642; font-weight: 850; }
.nav-links { gap: 4px; }
.nav-links a { padding: 9px 12px; color: #5e6c82; font-weight: 760; }
.nav-links a:hover { color: var(--navy); background: #f1f5fa; }
.nav-links .nav-community,
.nav-links .nav-community:hover {
  color: #fff;
  background: linear-gradient(105deg, #173a78, #2459c7);
  box-shadow: 0 8px 18px rgba(23, 58, 120, .15);
}
.hero { padding-top: clamp(30px, 5vw, 54px); }
.hero-card {
  padding: clamp(30px, 5.2vw, 58px);
  border-radius: 30px;
  border-color: #dce5f0;
  background:
    linear-gradient(112deg, rgba(36,89,199,.055), transparent 34%),
    linear-gradient(180deg, rgba(255,255,255,.99), rgba(250,252,255,.98));
  box-shadow: 0 22px 52px rgba(22, 51, 96, .095);
}
.hero-card::before { width: 6px; background: linear-gradient(180deg, #2459c7 0 42%, #2c9a66 42% 65%, #d89d21 65% 82%, #c95479 82%); }
.hero-card::after { width: 300px; height: 300px; right: -126px; bottom: -194px; background: rgba(36, 89, 199, .045); border: 1px solid rgba(36,89,199,.06); }
.hero-content { position: relative; z-index: 1; max-width: 870px; }
.eyebrow {
  min-height: 34px;
  padding: 6px 11px;
  border-radius: 9px;
  color: #385272;
  background: #f4f7fb;
  border-color: #dde6f1;
  letter-spacing: .025em;
}
.hero-wordmark {
  max-width: 500px;
  margin-block: 24px 22px;
  padding: 11px 14px;
  border-radius: 17px;
  background: #fff;
  border-color: #dfe6ef;
  box-shadow: 0 8px 22px rgba(23, 52, 98, .055);
}
.hero-title { max-width: 16ch; font-size: clamp(2.35rem, 5.2vw, 4.65rem); letter-spacing: -.052em; }
.hero-title .accent { color: #2459c7; }
.hero-desc { max-width: 72ch; color: #5c6c83; font-size: clamp(1rem, 1.4vw, 1.08rem); }
.hero-actions { gap: 10px; }
.btn { min-height: 48px; padding-inline: 18px; border-radius: 11px; font-weight: 820; }
.btn-primary, .btn-primary:hover { background: linear-gradient(105deg, #173a78, #2459c7); box-shadow: 0 9px 20px rgba(23,58,120,.14); }
.btn-secondary { border-color: #d8e1ec; color: #2c3e58; }
.btn-secondary:hover { color: var(--navy); border-color: #cbd7e6; background: #f7f9fc; }
.hero-tags { gap: 8px; }
.tag { min-height: 34px; padding-inline: 11px; border-radius: 8px; color: #4e5f76; background: #f8fafc; border-color: #e2e8f0; font-size: .9rem; }
.section { padding: clamp(34px, 5vw, 50px) 0; }
.section-head { position: relative; gap: 7px; padding-left: 18px; margin-bottom: 24px; border-left: 0; }
.section-head::before { content: ""; position: absolute; left: 0; top: 3px; bottom: 3px; width: 4px; border-radius: 4px; background: linear-gradient(180deg, #2459c7, #6b91df); }
.section-kicker { color: #315fae; letter-spacing: .105em; }
.section-title { color: #162743; letter-spacing: -.028em; }
.section-subtitle { color: #65748a; }
.grid-3, .feature-layout, .council-grid { gap: 18px; }
.card, .panel {
  border-color: #dfe6ef;
  background: rgba(255,255,255,.985);
  box-shadow: 0 10px 28px rgba(23, 52, 98, .06);
}
.card { position: relative; overflow: hidden; padding: clamp(22px, 3vw, 28px); }
.card::before { content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 3px; background: linear-gradient(90deg, #2459c7, #4e82d8 45%, #c9d6eb); opacity: .72; }
.card:hover { transform: translateY(-2px); box-shadow: 0 15px 34px rgba(23,52,98,.085); }
.card-icon { width: 46px; height: 46px; border-radius: 12px; box-shadow: 0 7px 16px rgba(23,52,98,.1); }
.icon-purpose { background: linear-gradient(145deg, #214f9f, #2e6fd0); }
.icon-core { background: linear-gradient(145deg, #9b6a13, #c79225); }
.icon-method { background: linear-gradient(145deg, #1b7550, #28996a); }
.pill { min-height: 34px; border-radius: 8px; color: #44536a; background: #f7f9fc; }
.panel { padding: clamp(24px, 3.5vw, 32px); }
.info-list { gap: 12px; }
.info-item, .logo-point { border-color: #e2e8f0; background: #f8fafc; }
.info-item { padding: 15px; }
.info-no { width: 52px; height: 52px; border-radius: 12px; background: linear-gradient(145deg, #173a78, #285fc0); box-shadow: 0 6px 14px rgba(23,58,120,.12); }
.date-chip { border: 1px solid #dce6f4; background: #f0f5fc; }
.logo-frame { padding: 20px; border-color: #dae4ef; background: linear-gradient(145deg, #fff, #f7f9fc); box-shadow: inset 0 0 0 1px rgba(255,255,255,.9), 0 8px 20px rgba(23,52,98,.045); }
.logo-point { padding: 15px 17px; }
.council-card { padding: 24px 18px; border-color: #dfe6ef; background: linear-gradient(180deg, #fff, #fbfcfe); box-shadow: 0 8px 22px rgba(23,52,98,.055); }
.council-card:hover { transform: translateY(-2px); border-color: #cdd9e8; box-shadow: 0 13px 28px rgba(23,52,98,.08); }
.council-avatar { width: 64px; height: 64px; border-radius: 15px; background: linear-gradient(145deg, #173a78, #285fc0); box-shadow: 0 7px 16px rgba(23,58,120,.14); }
.council-name { color: #1b2d48; }
.footer { padding-top: 38px; }
.footer-card { border-radius: 26px; background: linear-gradient(125deg, #15356f, #1c468b 62%, #2459a9); box-shadow: 0 18px 40px rgba(19,48,101,.18); }
.footer-card::after { width: 320px; height: 320px; right: -130px; bottom: -205px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.045); }
.community-entry { border-radius: 18px; background: rgba(255,255,255,.985); border-color: rgba(255,255,255,.96); box-shadow: 0 10px 28px rgba(7,25,61,.12); }
.official-link, .footer-badge { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.2); }
.footer-visit, .footer-visit:hover { background: linear-gradient(105deg, #1e4a98, #2c68c9); box-shadow: 0 8px 18px rgba(9,29,72,.16); }

@media (min-width: 1180px) {
  .hero-content { max-width: 900px; }
}
@media (max-width: 1024px) {
  .hero-card { padding: 38px; }
  .hero-title { font-size: clamp(2.55rem, 6vw, 4rem); }
  .grid-3 { gap: 14px; }
  .council-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .nav { min-height: 70px; }
  .nav-links { top: calc(100% + 8px); padding: 9px; border-radius: 15px; border-color: #dce4ee; box-shadow: 0 14px 30px rgba(23,52,98,.11); }
  .nav-links a { min-height: 44px; display: flex; align-items: center; }
  .nav-links .nav-community { justify-content: center; }
  .hero-card { padding: 34px 30px; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 .card:last-child { grid-column: 1 / -1; }
  .feature-layout { gap: 14px; }
  .logo-layout { grid-template-columns: 180px minmax(0, 1fr); }
  .logo-frame { max-width: none; }
}
@media (max-width: 680px) {
  .container { width: min(calc(100% - 24px), var(--max)); }
  .hero { padding-top: 18px; }
  .hero-card { padding: 28px 22px; border-radius: 22px; }
  .hero-card::before { width: 4px; }
  .hero-title { font-size: clamp(2rem, 10vw, 3rem); max-width: 17ch; }
  .hero-wordmark { margin-block: 19px 18px; padding: 8px 10px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .hero-tags .tag { width: auto; justify-content: flex-start; }
  .section { padding: 30px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-3 .card:last-child { grid-column: auto; }
  .logo-layout { grid-template-columns: 1fr; }
  .logo-frame { width: min(52vw, 210px); }
  .council-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .council-card { padding: 20px 12px; }
  .council-avatar { width: 56px; height: 56px; }
  .footer-layout { gap: 16px; }
  .footer-card { border-radius: 20px; }
}
@media (max-width: 430px) {
  .container { width: min(calc(100% - 16px), var(--max)); }
  .brand-mark { width: 44px; height: 44px; padding: 6px; }
  .brand-title { max-width: 52vw; font-size: .96rem; }
  .brand-subtitle { max-width: 50vw; font-size: .76rem; }
  .hero-card { padding: 24px 17px; }
  .hero-title { font-size: 1.92rem; }
  .hero-desc { font-size: .95rem; line-height: 1.72; }
  .tag { font-size: .84rem; }
  .section-head { padding-left: 14px; }
  .card, .panel { border-radius: 16px; }
  .council-grid { grid-template-columns: 1fr; }
  .footer-card { padding-inline: 17px; }
}


/* 2026-09 r6: keep the enlarged logo artwork clipped cleanly inside the existing rounded frame. */
.brand-mark {
  overflow: hidden;
  isolation: isolate;
}

.brand-mark img {
  transform: scale(1.24);
  transform-origin: center;
}