:root {
  --canvas: #f7f8f5;
  --surface: #ffffff;
  --surface-soft: #f0f3ed;
  --surface-warm: #fff9f1;
  --ink: #14231d;
  --ink-soft: #52615b;
  --ink-faint: #5d6c66;
  --line: #dfe5df;
  --line-strong: #cad4cc;
  --primary: #126f5b;
  --primary-dark: #0b5142;
  --primary-soft: #def2ea;
  --accent: #f26b38;
  --accent-strong: #a9431f;
  --accent-soft: #fff0e9;
  --danger: #b93838;
  --danger-soft: #fff0f0;
  --shadow-sm: 0 1px 2px rgba(20, 35, 29, 0.04), 0 6px 18px rgba(20, 35, 29, 0.05);
  --shadow-lg: 0 24px 64px rgba(20, 35, 29, 0.12);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --content: 1180px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans Arabic", Arial, sans-serif;
}

/* Shared navigation and footer */
.site-header {
  border-bottom-color: color-mix(in srgb, var(--primary) 14%, var(--line));
  background: color-mix(in srgb, var(--canvas) 89%, transparent);
  box-shadow: 0 1px 0 rgba(20, 35, 29, .02);
}

.site-header::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--primary) 35%, transparent), transparent);
  content: "";
  pointer-events: none;
}

.site-header__inner {
  min-height: 76px;
  gap: 24px;
}

.brand__identity {
  display: grid;
  line-height: 1.05;
}

.brand__identity > small {
  margin-top: 5px;
  color: var(--ink-faint);
  font-size: 9px;
  font-weight: 720;
  letter-spacing: .055em;
  text-transform: uppercase;
}

.primary-nav {
  justify-content: center;
  gap: 3px;
}

.primary-nav > a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 11px;
  border-radius: 10px;
  font-size: 13px;
  transition: background .16s ease, color .16s ease;
}

.primary-nav > a:hover {
  background: color-mix(in srgb, var(--surface) 72%, transparent);
}

.primary-nav > a[aria-current="page"] {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.primary-nav > a[aria-current="page"]::after {
  display: none;
}

.primary-nav > a small,
.nav-link__icon,
.primary-nav__heading,
.primary-nav__mobile-actions {
  display: none;
}

.header-actions {
  gap: 9px;
}

.language-menu summary {
  width: auto;
  min-width: 58px;
  height: 40px;
  padding: 0 10px;
  gap: 5px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 76%, transparent);
}

.language-menu summary > span:first-child {
  color: var(--primary);
  font-size: 15px;
}

.language-menu__panel,
.account-menu__panel {
  top: calc(100% + 12px);
  min-width: 190px;
  padding: 9px;
  border-color: var(--line-strong);
}

.language-menu__panel > span {
  display: block;
  padding: 5px 10px 8px;
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 780;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.language-menu__panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.language-menu__panel a small {
  color: var(--ink-faint);
  font-size: 10px;
}

.language-menu__panel a[aria-current="true"] {
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 750;
}

.account-menu summary {
  min-height: 42px;
  padding: 4px 8px 4px 5px;
  border: 1px solid transparent;
  border-radius: 12px;
}

[dir="rtl"] .account-menu summary {
  padding: 4px 5px 4px 8px;
}

.account-menu summary:hover,
.account-menu[open] summary {
  border-color: var(--line);
  background: var(--surface);
}

.account-label {
  display: grid;
  max-width: 150px;
  line-height: 1.2;
}

.account-label strong,
.account-label small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-label strong { font-size: 12px; }
.account-label small { margin-top: 3px; color: var(--ink-faint); font-size: 9px; font-weight: 600; }
.account-chevron { color: var(--ink-faint); transition: transform .16s ease; }
.account-menu[open] .account-chevron { transform: rotate(180deg); }

.account-menu__identity {
  margin: -1px -1px 7px;
  padding: 11px;
  border-radius: 9px;
  background: var(--surface-soft);
}

.account-menu__identity strong,
.account-menu__identity span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-menu__identity strong { font-size: 12px; }
.account-menu__identity span { margin-top: 2px; color: var(--ink-faint); font-size: 10px; }

.site-header summary:focus-visible,
.nav-toggle:focus-visible,
.primary-nav a:focus-visible,
.site-footer a:focus-visible {
  outline: 3px solid var(--focus, rgba(18, 111, 91, .28));
  outline-offset: 3px;
}

.site-footer {
  position: relative;
  border-top: 0;
  background: #11231d;
  color: #f7faf8;
}

.site-footer__signal {
  display: grid;
  grid-template-columns: 1.35fr .8fr .35fr;
  height: 4px;
}

.site-footer__signal span:nth-child(1) { background: var(--primary); }
.site-footer__signal span:nth-child(2) { background: #e5a63e; }
.site-footer__signal span:nth-child(3) { background: var(--accent); }

.site-footer__inner {
  grid-template-columns: minmax(280px, 1.65fr) repeat(3, minmax(120px, .7fr));
  align-items: start;
  padding: 58px 0 44px;
  gap: 48px;
}

.site-footer .brand,
.site-footer .brand:hover,
.site-footer .brand__word { color: #f7faf8; }
.site-footer .brand__identity > small { color: #9bb2a9; }
.site-footer .brand__word span { color: #72d1b8; }

.footer-brand > p {
  max-width: 430px;
  margin-top: 13px;
  color: #aec0b9;
  font-size: 14px;
  line-height: 1.7;
}

.footer-methods {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 20px;
}

.footer-methods span {
  padding: 4px 8px;
  border: 1px solid rgba(174, 192, 185, .2);
  border-radius: 999px;
  color: #aec0b9;
  font-size: 10px;
  font-weight: 720;
  letter-spacing: .035em;
}

.footer-nav {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-nav > strong {
  margin-bottom: 5px;
  color: #f7faf8;
  font-size: 11px;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 7px;
  color: #9fb3ab;
  font-size: 13px;
  text-decoration: none;
}

.footer-nav a:hover { color: #fff; text-decoration: none; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: #6bd0a3; box-shadow: 0 0 0 3px rgba(107, 208, 163, .12); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 20px 0 26px;
  border-top: 1px solid rgba(174, 192, 185, .14);
  gap: 24px;
}

.footer-bottom > div { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.footer-bottom p { margin: 0; color: #82978f; font-size: 11px; }
.footer-bottom a { color: #c3d1cc; font-size: 12px; font-weight: 700; text-decoration: none; }
.footer-bottom a span { display: inline-block; margin-inline-start: 4px; color: #72d1b8; }

@media (max-width: 1040px) {
  .site-header__inner { grid-template-columns: auto auto 1fr; gap: 13px; }
  .nav-toggle { display: block; order: 2; }
  .nav-toggle--open > span:nth-of-type(2) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle--open > span:nth-of-type(3) { opacity: 0; }
  .nav-toggle--open > span:nth-of-type(4) { transform: translateY(-6px) rotate(-45deg); }
  .nav-toggle > span:not(.sr-only) { transition: transform .18s ease, opacity .18s ease; }
  .header-actions { order: 3; }
  .primary-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 12px;
    left: 12px;
    display: none;
    max-height: calc(100vh - 104px);
    overflow-y: auto;
    padding: 12px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
  }
  .primary-nav--open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; }
  .primary-nav__heading { display: flex; grid-column: 1 / -1; align-items: center; gap: 9px; padding: 7px 9px 12px; border-bottom: 1px solid var(--line); }
  .primary-nav__heading .brand__mark { width: 23px; height: 23px; transform: scale(.8) rotate(-8deg); transform-origin: center; }
  .primary-nav__heading div { display: grid; line-height: 1.2; }
  .primary-nav__heading strong { font-size: 13px; }
  .primary-nav__heading small { color: var(--ink-faint); font-size: 10px; }
  .primary-nav > a { align-items: center; min-height: 58px; padding: 9px 10px; }
  .nav-link__icon { display: grid; flex: 0 0 auto; width: 32px; height: 32px; place-items: center; border-radius: 9px; background: var(--surface-soft); color: var(--primary); font-size: 15px; font-weight: 800; }
  .primary-nav > a > span:last-child { display: grid; line-height: 1.2; }
  .primary-nav > a small { display: block; margin-top: 4px; color: var(--ink-faint); font-size: 9px; font-weight: 560; }
  .primary-nav__mobile-actions { display: none; grid-column: 1 / -1; }
  .site-footer__inner { grid-template-columns: 1.5fr repeat(3, 1fr); gap: 28px; }
}

@media (max-width: 760px) {
  .site-header__inner { min-height: 68px; }
  .brand__identity > small { display: none; }
  .brand__word { font-size: 18px; }
  .language-menu summary { min-width: 43px; padding: 0 8px; }
  .language-menu summary > span:first-child { display: none; }
  .site-footer__inner { grid-template-columns: 1.25fr 1fr; padding: 44px 0 34px; gap: 34px 22px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; width: min(calc(100% - 24px), var(--content)); }
}

@media (max-width: 560px) {
  .site-header__inner { grid-template-columns: auto auto 1fr; width: min(calc(100% - 20px), var(--content)); gap: 8px; }
  .brand { gap: 7px; }
  .brand__mark { transform: scale(.88) rotate(-8deg); transform-origin: center; }
  .header-actions .button, .header-login, .account-label, .account-chevron { display: none; }
  .account-menu summary { padding: 3px; }
  .primary-nav { top: calc(100% + 6px); right: 8px; left: 8px; }
  .primary-nav--open { grid-template-columns: 1fr; }
  .primary-nav__mobile-actions { display: flex; align-items: center; justify-content: flex-end; padding: 10px 8px 4px; border-top: 1px solid var(--line); gap: 9px; }
  .primary-nav__mobile-actions > a:not(.button) { color: var(--ink); font-size: 13px; font-weight: 700; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; width: min(calc(100% - 28px), var(--content)); }
  .footer-nav:last-child { grid-column: 1 / -1; }
  .footer-bottom > div { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-toggle > span:not(.sr-only), .account-chevron { transition: none; }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
}

a:hover {
  color: var(--primary-dark);
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
summary {
  -webkit-tap-highlight-color: transparent;
}

img {
  max-width: 100%;
}

.skip-link {
  position: fixed;
  inset-inline-start: 16px;
  top: -80px;
  z-index: 1000;
  padding: 10px 16px;
  border-radius: 0 0 10px 10px;
  background: var(--ink);
  color: #fff;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  color: #fff;
}

.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;
}

.site-main {
  min-height: calc(100vh - 155px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(202, 212, 204, 0.78);
  background: rgba(247, 248, 245, 0.92);
  backdrop-filter: blur(16px);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: min(calc(100% - 40px), var(--content));
  min-height: 72px;
  margin: 0 auto;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: var(--ink);
  text-decoration: none;
}

.brand__mark {
  position: relative;
  display: inline-block;
  width: 27px;
  height: 27px;
  transform: rotate(-8deg);
}

.brand__mark span {
  position: absolute;
  display: block;
  width: 16px;
  height: 8px;
  border-radius: 4px 2px 4px 2px;
}

.brand__mark span:nth-child(1) {
  top: 1px;
  left: 4px;
  background: var(--primary);
}

.brand__mark span:nth-child(2) {
  top: 10px;
  left: 9px;
  background: #e5a63e;
}

.brand__mark span:nth-child(3) {
  top: 18px;
  left: 2px;
  background: var(--accent);
}

.brand__word {
  font-size: 20px;
  font-weight: 760;
  letter-spacing: -0.035em;
}

.brand__word span {
  color: var(--primary);
}

.brand__badge {
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: 99px;
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.primary-nav a {
  position: relative;
  padding: 25px 0 22px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 620;
  text-decoration: none;
  white-space: nowrap;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--ink);
}

.primary-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: var(--primary);
  content: "";
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.header-login {
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.header-login:hover {
  color: var(--primary);
  text-decoration: none;
}

.language-menu,
.account-menu {
  position: relative;
}

.language-menu summary,
.account-menu summary {
  display: flex;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.language-menu summary::-webkit-details-marker,
.account-menu summary::-webkit-details-marker {
  display: none;
}

.language-menu summary {
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 750;
}

.language-menu__panel,
.account-menu__panel {
  position: absolute;
  top: calc(100% + 10px);
  inset-inline-end: 0;
  z-index: 10;
  min-width: 164px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.language-menu__panel a,
.account-menu__panel a,
.account-menu__panel button {
  display: block;
  width: 100%;
  padding: 9px 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 14px;
  text-align: start;
  text-decoration: none;
}

.language-menu__panel a:hover,
.account-menu__panel a:hover,
.account-menu__panel button:hover {
  background: var(--surface-soft);
  color: var(--ink);
}

.account-menu summary {
  gap: 8px;
  font-size: 13px;
  font-weight: 650;
}

.account-avatar {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.nav-toggle > span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 4px 0;
  border-radius: 2px;
  background: var(--ink);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 11px;
  cursor: pointer;
  font-weight: 690;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 7px 16px rgba(18, 111, 91, 0.16);
}

.button--primary:hover {
  background: var(--primary-dark);
  color: #fff;
}

.button--secondary {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

.button--secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.button--small {
  min-height: 38px;
  padding: 7px 13px;
  border-radius: 9px;
  font-size: 13px;
}

.button--full {
  width: 100%;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 780;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  content: "";
}

.flash-stack {
  position: fixed;
  top: 88px;
  inset-inline-end: 20px;
  z-index: 90;
  display: grid;
  width: min(400px, calc(100% - 40px));
  gap: 8px;
}

.flash-message {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.flash-message--error {
  border-color: #edc4c4;
  background: var(--danger-soft);
  color: var(--danger);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #f2f4f0;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  align-items: end;
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 42px 0;
  gap: 40px;
}

.brand--footer {
  margin-bottom: 9px;
}

.site-footer p {
  max-width: 460px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 620;
}

.footer-meta {
  text-align: end;
}

/* Home */
.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 20px 70px;
}

.hero::before,
.hero::after {
  position: absolute;
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero::before {
  top: -220px;
  left: calc(50% - 500px);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(222, 242, 234, 0.8) 0, rgba(222, 242, 234, 0) 70%);
}

.hero::after {
  right: calc(50% - 570px);
  bottom: -260px;
  width: 540px;
  height: 540px;
  background: radial-gradient(circle, rgba(255, 225, 208, 0.56) 0, rgba(255, 225, 208, 0) 68%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(100%, 870px);
  margin: 0 auto;
  text-align: center;
}

.hero h1 {
  max-width: 780px;
  margin: 18px auto 16px;
  font-size: clamp(40px, 5.8vw, 68px);
  font-weight: 780;
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: var(--primary);
}

.hero__lede {
  max-width: 660px;
  margin: 0 auto 34px;
  color: var(--ink-soft);
  font-size: clamp(17px, 2vw, 20px);
}

.research-composer {
  position: relative;
  max-width: 790px;
  margin: 0 auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.research-composer__row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.research-composer__icon {
  display: grid;
  flex: 0 0 46px;
  height: 46px;
  place-items: center;
  border-radius: 12px;
  background: var(--surface-soft);
  color: var(--primary);
  font-size: 20px;
}

.research-composer input {
  flex: 1;
  min-width: 0;
  height: 52px;
  padding: 0 6px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 17px;
}

.research-composer input::placeholder {
  color: #8d9894;
}

.research-composer__submit {
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 13px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: 22px;
  transition: background 0.15s ease;
}

.research-composer__submit:hover {
  background: var(--primary-dark);
}

.quick-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 18px;
  gap: 9px;
}

.quick-action {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 620;
  text-decoration: none;
}

.quick-action:hover {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
}

.trust-strip {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto 68px;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.56);
}

.trust-strip__items {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.trust-item__icon {
  display: grid;
  flex: 0 0 36px;
  height: 36px;
  place-items: center;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.trust-item strong,
.trust-item span {
  display: block;
}

.trust-item strong {
  margin-bottom: 2px;
  font-size: 14px;
}

.trust-item span {
  color: var(--ink-faint);
  font-size: 12px;
}

.content-section {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 24px 0 84px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 24px;
}

.section-heading h2 {
  margin: 7px 0 0;
  font-size: clamp(27px, 3vw, 38px);
  font-weight: 750;
  letter-spacing: -0.04em;
}

.section-heading p {
  max-width: 560px;
  margin: 8px 0 0;
  color: var(--ink-soft);
}

.section-link {
  flex: 0 0 auto;
  color: var(--primary);
  font-size: 14px;
  font-weight: 700;
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.paper-card {
  position: relative;
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.paper-card:hover {
  z-index: 2;
  border-color: #b7c8bc;
  box-shadow: 0 18px 40px rgba(20, 35, 29, 0.09);
  transform: translateY(-3px);
}

.paper-card__top,
.paper-card__meta,
.paper-card__footer {
  display: flex;
  align-items: center;
}

.paper-card__top {
  justify-content: space-between;
  margin-bottom: 17px;
  gap: 12px;
}

.paper-card__type,
.paper-card__oa {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.paper-card__type {
  color: var(--ink-faint);
}

.paper-card__oa {
  padding: 4px 7px;
  border-radius: 99px;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.paper-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 720;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.paper-card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.paper-card h3 a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.paper-card__meta {
  flex-wrap: wrap;
  margin-bottom: 13px;
  color: var(--ink-faint);
  font-size: 12px;
  gap: 7px;
}

.paper-card__meta span + span::before {
  margin-inline-end: 7px;
  color: var(--line-strong);
  content: "•";
}

.paper-card__abstract {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 13px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 4;
}

.paper-card__footer {
  justify-content: space-between;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 12px;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 60px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink-soft);
  text-align: center;
}

/* Search */
.search-page {
  width: min(calc(100% - 40px), 1080px);
  margin: 0 auto;
  padding: 58px 0 86px;
}

.search-page__header {
  max-width: 850px;
  margin: 0 auto 42px;
  text-align: center;
}

.search-page__header h1 {
  margin: 10px 0 9px;
  font-size: clamp(34px, 4.5vw, 50px);
  font-weight: 760;
  letter-spacing: -0.05em;
}

.search-page__header > p {
  max-width: 680px;
  margin: 0 auto 25px;
  color: var(--ink-soft);
}

.search-bar {
  display: flex;
  align-items: center;
  max-width: 820px;
  margin: 0 auto;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  gap: 8px;
}

.search-bar:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(18, 111, 91, 0.09), var(--shadow-sm);
}

.search-bar__icon {
  padding-inline-start: 9px;
  color: var(--primary);
  font-size: 22px;
}

.search-bar input {
  flex: 1;
  min-width: 0;
  height: 46px;
  border: 0;
  outline: 0;
  color: var(--ink);
}

.search-results__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 17px;
  gap: 20px;
}

.search-results__summary strong,
.search-results__summary span {
  display: inline-block;
}

.search-results__summary > div > span {
  margin-inline-start: 5px;
  color: var(--ink-faint);
}

.retrieval-label {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
}

.search-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  align-items: start;
  gap: 22px;
}

.search-note {
  position: sticky;
  top: 94px;
  display: flex;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-warm);
  gap: 10px;
}

.search-note__icon {
  display: grid;
  flex: 0 0 25px;
  height: 25px;
  place-items: center;
  border-radius: 50%;
  background: #f7d99f;
  color: #725010;
  font-size: 12px;
  font-weight: 800;
}

.search-note strong {
  display: block;
  margin-bottom: 5px;
  font-size: 12px;
}

.search-note p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.55;
}

.search-results {
  display: grid;
  gap: 12px;
}

.result-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  padding: 23px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  gap: 22px;
}

.result-card:hover {
  border-color: #b7c8bc;
}

.result-card__badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 9px;
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  gap: 7px;
}

.result-card__oa {
  padding: 3px 6px;
  border-radius: 99px;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.result-card__retracted {
  padding: 3px 6px;
  border-radius: 99px;
  background: var(--danger-soft);
  color: var(--danger);
}

.result-card h2 {
  margin: 0 0 7px;
  font-size: 19px;
  font-weight: 730;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.result-card h2 a {
  color: var(--ink);
  text-decoration: none;
}

.result-card h2 a:hover {
  color: var(--primary-dark);
}

.result-card__authors {
  margin: 0 0 5px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 620;
}

.result-card__meta {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 11px;
  color: var(--ink-faint);
  font-size: 11px;
  gap: 7px;
}

.result-card__meta span + span::before {
  margin-inline-end: 7px;
  content: "•";
}

.result-card__abstract {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.result-card__actions {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 105px;
  flex-direction: column;
  align-items: stretch;
  gap: 9px;
}

.result-card__doi {
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 650;
  text-align: center;
}

.search-start {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 62px;
  gap: 14px;
}

.search-start > div {
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.search-start > div > span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 16px;
  place-items: center;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.search-start strong {
  display: block;
  margin-bottom: 5px;
}

.search-start p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.page-search {
  background:
    radial-gradient(circle at 8% 7%, rgba(216, 240, 231, 0.7), transparent 25%),
    var(--canvas);
}

.search-page {
  width: min(calc(100% - 40px), 1180px);
  padding-top: 40px;
}

.search-hero {
  position: relative;
  overflow: hidden;
  margin-bottom: 38px;
  padding: 46px clamp(24px, 5vw, 64px) 34px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius-lg) + 6px);
  background:
    radial-gradient(circle at 92% 14%, rgba(242, 107, 56, 0.15), transparent 25%),
    linear-gradient(140deg, #fff 0%, #edf6f1 100%);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.search-hero__copy {
  max-width: 820px;
  margin: 0 auto;
}

.search-hero h1 {
  max-width: 790px;
  margin: 12px auto 14px;
  color: var(--ink);
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  font-weight: 790;
  line-height: 1.02;
  letter-spacing: -0.06em;
}

.search-hero__copy > p {
  max-width: 720px;
  margin: 0 auto 26px;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}

.search-bar--hero {
  max-width: 900px;
  border-color: #b8d1c7;
  box-shadow: 0 15px 45px rgba(31, 67, 52, 0.12);
}

.search-examples {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 7px;
  margin-top: 14px;
  color: var(--ink-faint);
  font-size: 0.75rem;
}

.search-examples a {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink-soft);
  text-decoration: none;
}

.search-examples a:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.retrieval-pipeline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(8px, 2vw, 22px);
  margin: 26px auto 0;
}

.retrieval-pipeline > div {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 0 7px;
  text-align: start;
}

.retrieval-pipeline > div > span {
  grid-row: 1 / 3;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
}

.retrieval-pipeline strong {
  color: var(--ink);
  font-size: 0.82rem;
}

.retrieval-pipeline small {
  color: var(--ink-faint);
  font-size: 0.68rem;
}

.retrieval-pipeline > i {
  color: var(--line-strong);
  font-style: normal;
}

[dir="rtl"] .retrieval-pipeline > i {
  transform: scaleX(-1);
}

.search-hero .staff-experiment {
  max-width: 900px;
  margin: 20px auto 0;
  text-align: start;
}

.search-hero .live-search-feedback {
  justify-content: center;
}

.search-layout {
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 25px;
}

.search-note {
  display: block;
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(155deg, #fff, var(--surface-warm));
}

.search-note h2 {
  margin: 6px 0 9px;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
}

.search-note > p {
  margin: 0 0 15px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  line-height: 1.6;
}

.search-note > a {
  display: inline-block;
  margin-top: 15px;
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 720;
}

.ranking-legend {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ranking-legend li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.ranking-legend li > span {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border-radius: 9px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.65rem;
  font-weight: 800;
}

.ranking-legend strong,
.ranking-legend small {
  display: block;
}

.ranking-legend strong { font-size: 0.76rem; }
.ranking-legend small { color: var(--ink-faint); font-size: 0.67rem; }

.result-card:not(.result-card--live) {
  grid-template-columns: 34px minmax(0, 1fr) auto;
}

.result-card__rank {
  align-self: start;
  padding-top: 2px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.06em;
}

.result-card {
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.result-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(25, 55, 43, 0.09);
}

.search-welcome {
  padding-top: 18px;
}

.search-welcome__intro {
  max-width: 660px;
  margin: 0 auto;
  text-align: center;
}

.search-welcome__intro h2 {
  margin: 7px 0 10px;
  color: var(--ink);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: -0.045em;
}

.search-welcome__intro p {
  margin: 0;
  color: var(--ink-soft);
}

.search-welcome .search-start {
  margin-top: 32px;
}

/* About */
.page-about {
  background:
    radial-gradient(circle at 8% 6%, rgba(218, 241, 232, 0.75), transparent 24%),
    radial-gradient(circle at 95% 26%, rgba(255, 222, 202, 0.52), transparent 22%),
    var(--canvas);
}

.about-hero,
.about-section,
.about-boundary,
.about-cta,
.about-stats {
  width: min(calc(100% - 40px), var(--content));
  margin-inline: auto;
}

.about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.75fr);
  align-items: center;
  min-height: 650px;
  padding: 76px 0;
  gap: 72px;
}

.about-hero h1 {
  max-width: 830px;
  margin: 12px 0 20px;
  color: var(--ink);
  font-size: clamp(3rem, 5.9vw, 5.7rem);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.068em;
}

.about-hero__copy > p {
  max-width: 720px;
  color: var(--ink-soft);
  font-size: 1.06rem;
  line-height: 1.75;
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.about-signal {
  position: relative;
  display: grid;
  min-height: 430px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0 28%, rgba(226, 242, 235, 0.7) 29% 53%, transparent 54%);
}

.about-signal::before,
.about-signal::after {
  position: absolute;
  width: 72%;
  height: 72%;
  border: 1px dashed #b9cec4;
  border-radius: 50%;
  content: "";
}

.about-signal::after { width: 92%; height: 92%; border-color: #d6dfda; }

.about-signal__core {
  z-index: 2;
  display: grid;
  width: 142px;
  height: 142px;
  place-items: center;
  align-content: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  box-shadow: 0 22px 50px rgba(20, 45, 35, 0.2);
}

.about-signal__core span { font-size: 2rem; font-weight: 850; }
.about-signal__core strong { font-size: 0.72rem; font-weight: 600; }

.about-signal__node {
  position: absolute;
  z-index: 3;
  display: grid;
  min-width: 88px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.about-signal__node span { color: var(--primary-dark); font-weight: 800; }
.about-signal__node small { color: var(--ink-faint); font-size: 0.68rem; }
.about-signal__node--one { top: 30px; left: 42px; }
.about-signal__node--two { top: 82px; right: 10px; }
.about-signal__node--three { right: 40px; bottom: 35px; }

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.about-stats > div {
  padding: 25px 28px;
  border-inline-end: 1px solid var(--line);
}

.about-stats > div:last-child { border-inline-end: 0; }
.about-stats dt { color: var(--ink-soft); font-size: 0.75rem; font-weight: 700; }
.about-stats dd { margin: 3px 0 0; color: var(--ink); font-size: 2rem; font-weight: 800; }

.about-section {
  padding: 112px 0;
}

.about-section__heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.about-section__heading h2,
.about-boundary h2,
.about-cta h2 {
  margin: 8px 0 12px;
  color: var(--ink);
  font-size: clamp(2.25rem, 4vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.about-section__heading p,
.about-boundary > div > p,
.about-cta p {
  color: var(--ink-soft);
  line-height: 1.7;
}

.principle-grid,
.new-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.principle-grid article,
.new-grid article {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.principle-grid article > span {
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 850;
}

.principle-grid h3,
.new-grid strong {
  display: block;
  margin: 20px 0 9px;
  color: var(--ink);
  font-size: 1.2rem;
}

.principle-grid p,
.new-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.7;
}

.about-workflow {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.about-workflow li {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr);
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  gap: 24px;
}

.about-workflow li > span { color: var(--accent); font-size: 0.74rem; font-weight: 850; }
.about-workflow h3 { margin: 0 0 7px; color: var(--ink); font-size: 1.25rem; }
.about-workflow p { max-width: 780px; margin: 0; color: var(--ink-soft); line-height: 1.65; }

.about-new {
  padding-inline: clamp(24px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius-lg) + 8px);
  background: linear-gradient(145deg, var(--ink), #23483a);
}

.about-new .eyebrow,
.about-new h2,
.about-new .about-section__heading p { color: #fff; }
.about-new .about-section__heading p { opacity: 0.75; }
.new-grid { grid-template-columns: repeat(2, 1fr); }
.new-grid article { border-color: rgba(255,255,255,.14); background: rgba(255,255,255,.07); box-shadow: none; }
.new-grid strong { margin-top: 0; color: #fff; }
.new-grid p { color: rgba(255,255,255,.72); }

.about-boundary {
  padding: 112px 0;
}

.boundary-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.boundary-columns > div { padding: 34px; }
.boundary-columns > div + div { border-inline-start: 1px solid var(--line); background: var(--surface-soft); }
.boundary-columns h3 { margin: 0 0 18px; }
.boundary-columns ul { display: grid; gap: 12px; margin: 0; padding-inline-start: 20px; color: var(--ink-soft); }

.about-cta {
  margin-bottom: 90px;
  padding: 70px clamp(24px, 7vw, 88px);
  border-radius: calc(var(--radius-lg) + 8px);
  background: linear-gradient(140deg, #fff, var(--primary-soft));
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.about-cta p { max-width: 620px; margin: 0 auto 24px; }

/* Authentication */
.auth-page {
  background:
    radial-gradient(circle at 13% 12%, rgba(222, 242, 234, 0.8), transparent 32%),
    radial-gradient(circle at 88% 88%, rgba(255, 225, 208, 0.55), transparent 30%),
    var(--canvas);
}

.auth-main {
  display: grid;
  min-height: calc(100vh - 73px);
  place-items: center;
  padding: 48px 20px 70px;
}

.auth-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(430px, 1fr);
  width: min(100%, 980px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.auth-story {
  position: relative;
  display: flex;
  min-height: 580px;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 46px;
  background: var(--ink);
  color: #fff;
}

.auth-story::before,
.auth-story::after {
  position: absolute;
  border-radius: 50%;
  content: "";
}

.auth-story::before {
  top: -90px;
  right: -100px;
  width: 280px;
  height: 280px;
  border: 70px solid rgba(69, 169, 143, 0.16);
}

.auth-story::after {
  bottom: -140px;
  left: -120px;
  width: 330px;
  height: 330px;
  background: rgba(242, 107, 56, 0.1);
}

.auth-story__content,
.auth-story__proof {
  position: relative;
  z-index: 1;
}

.auth-story h1 {
  margin: 19px 0 17px;
  font-size: clamp(31px, 4vw, 44px);
  font-weight: 750;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.auth-story p {
  color: #b7c3be;
}

.auth-story__proof {
  display: flex;
  align-items: center;
  gap: 13px;
}

.auth-story__dots {
  display: flex;
}

.auth-story__dots span {
  display: grid;
  width: 30px;
  height: 30px;
  margin-inline-end: -7px;
  place-items: center;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: #2c4e43;
  color: #dce8e3;
  font-size: 10px;
  font-weight: 750;
}

.auth-story__proof small {
  color: #aebbb6;
}

.auth-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 46px 54px;
}

.auth-panel__header {
  margin-bottom: 27px;
}

.auth-panel__header h2 {
  margin: 0 0 7px;
  font-size: 30px;
  font-weight: 750;
  letter-spacing: -0.035em;
}

.auth-panel__header p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.auth-panel__header a {
  font-weight: 680;
}

.form-errors {
  margin-bottom: 18px;
  padding: 11px 13px;
  border: 1px solid #efcaca;
  border-radius: 10px;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13px;
}

.field {
  margin-bottom: 17px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px;
}

.field__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.field label {
  margin: 0;
  color: var(--ink);
  font-size: 13px;
  font-weight: 680;
}

.field__top a {
  font-size: 12px;
  font-weight: 640;
}

.field input:not([type="checkbox"]),
.field select {
  width: 100%;
  height: 48px;
  padding: 0 13px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  outline: 0;
  background: var(--surface);
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(18, 111, 91, 0.11);
}

.field input[aria-invalid="true"],
.field select[aria-invalid="true"] {
  border-color: var(--danger);
}

.field__error {
  margin: 5px 0 0;
  color: var(--danger);
  font-size: 12px;
}

.field__help {
  margin: 5px 0 0;
  color: var(--ink-faint);
  font-size: 11px;
}

.password-field {
  position: relative;
}

.password-field input {
  padding-inline-end: 70px !important;
}

.password-toggle {
  position: absolute;
  top: 50%;
  inset-inline-end: 8px;
  padding: 5px 7px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 680;
  transform: translateY(-50%);
}

.password-toggle:hover {
  background: var(--surface-soft);
}

.form-checkline {
  display: flex;
  align-items: flex-start;
  margin: 4px 0 20px;
  color: var(--ink-soft);
  font-size: 12px;
  gap: 8px;
}

.form-checkline input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--primary);
}

.auth-security-note {
  display: flex;
  justify-content: center;
  margin: 17px 0 0;
  color: var(--ink-faint);
  font-size: 11px;
  gap: 6px;
}

/* Onboarding */
.onboarding-main {
  min-height: calc(100vh - 73px);
  padding: 42px 20px 76px;
}

.onboarding {
  width: min(100%, 960px);
  margin: 0 auto;
}

.onboarding__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 30px;
}

.onboarding__header h1 {
  margin: 8px 0 8px;
  font-size: clamp(31px, 4vw, 46px);
  font-weight: 760;
  letter-spacing: -0.045em;
}

.onboarding__header p {
  max-width: 650px;
  margin: 0;
  color: var(--ink-soft);
}

.profile-strength {
  min-width: 170px;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.profile-strength__top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 7px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
}

.profile-strength__bar {
  height: 6px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--surface-soft);
}

.profile-strength__bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width 0.2s ease;
}

.onboarding-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.onboarding-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
  background: #fbfcfa;
}

.onboarding-tab {
  padding: 18px 16px;
  border: 0;
  border-inline-end: 1px solid var(--line);
  background: transparent;
  color: var(--ink-faint);
  font-size: 13px;
  font-weight: 680;
  text-align: center;
}

.onboarding-tab:last-child {
  border-inline-end: 0;
}

.onboarding-tab[aria-selected="true"] {
  background: var(--surface);
  color: var(--primary-dark);
  box-shadow: inset 0 -2px var(--primary);
}

.onboarding-panel {
  display: none;
  min-height: 400px;
  padding: 34px;
}

.onboarding-panel--active {
  display: block;
}

.onboarding-panel h2 {
  margin: 0 0 6px;
  font-size: 23px;
  font-weight: 730;
  letter-spacing: -0.025em;
}

.onboarding-panel > p {
  margin: 0 0 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

.discipline-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 13px;
}

.discipline-card {
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: #fbfcfa;
}

.discipline-card h3 {
  margin: 0 0 11px;
  font-size: 14px;
  font-weight: 720;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.preference-chip {
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 99px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 12px;
}

.preference-chip:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.preference-chip[aria-pressed="true"] {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 680;
}

.tag-composer {
  display: flex;
  align-items: center;
  margin-bottom: 17px;
  padding: 7px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--surface);
  gap: 8px;
}

.tag-composer:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(18, 111, 91, 0.11);
}

.tag-composer input {
  flex: 1;
  min-width: 0;
  height: 38px;
  padding: 0 8px;
  border: 0;
  outline: 0;
}

.tag-composer button {
  height: 38px;
  padding: 0 14px;
  border: 0;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 680;
}

.selected-list {
  display: flex;
  min-height: 42px;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 8px;
}

.selected-tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 8px 7px 11px;
  border-radius: 99px;
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 12px;
  gap: 7px;
}

[dir="rtl"] .selected-tag {
  padding: 7px 11px 7px 8px;
}

.selected-tag button {
  display: grid;
  width: 20px;
  height: 20px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: #d9e0da;
  color: var(--ink-soft);
}

.selected-empty {
  color: var(--ink-faint);
  font-size: 13px;
}

.onboarding-status {
  min-height: 22px;
  margin-top: 15px;
  color: var(--ink-faint);
  font-size: 12px;
}

.onboarding-status--error {
  color: var(--danger);
}

.onboarding-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 26px;
  border-top: 1px solid var(--line);
  background: #fbfcfa;
}

.onboarding-actions__group {
  display: flex;
  gap: 9px;
}

.onboarding-progress {
  color: var(--ink-faint);
  font-size: 12px;
}

/* Responsive */
/* Research workspace pages */
.page-shell {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 48px 0 84px;
}

.narrow-shell {
  max-width: 1040px;
}

.page-header {
  margin-bottom: 30px;
}

.page-header h1,
.profile-hero h1,
.paper-detail__header h1 {
  max-width: 880px;
  margin: 6px 0 12px;
  color: var(--ink);
  font-size: clamp(2.25rem, 5vw, 4.6rem);
  font-weight: 780;
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.page-header h1,
.profile-hero h1 {
  font-size: clamp(2.15rem, 4vw, 3.8rem);
}

.page-header > p,
.profile-hero p,
.paper-venue {
  max-width: 720px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.page-header--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 30px;
  color: var(--ink-faint);
  font-size: 0.86rem;
}

.breadcrumbs a {
  color: var(--ink-soft);
}

.content-panel,
.side-panel,
.method-banner {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.content-panel {
  margin-bottom: 24px;
  padding: 30px;
}

.content-panel h2,
.side-panel h2 {
  margin: 0 0 18px;
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 740;
  letter-spacing: -0.025em;
}

.button--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--ink-soft);
}

.button--danger {
  border: 1px solid var(--danger);
  background: var(--danger);
  color: #fff;
}

.button--danger:hover {
  background: #8f2929;
  color: #fff;
}

.icon-button {
  display: inline-grid;
  width: 40px;
  height: 40px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 1.35rem;
  line-height: 1;
}

.icon-button:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.icon-button--danger:hover {
  border-color: #efcaca;
  background: var(--danger-soft);
  color: var(--danger);
}

.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 350px;
  align-items: start;
  gap: 28px;
}

.paper-detail__header {
  margin-bottom: 26px;
}

.paper-badges,
.action-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 3px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 700;
}

.status-badge--positive {
  border-color: #b8dfd2;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.status-badge--danger {
  border-color: #efcaca;
  background: var(--danger-soft);
  color: var(--danger);
}

.paper-authors {
  margin: 20px 0 4px;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.paper-authors a {
  color: var(--primary-dark);
  font-weight: 650;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  overflow: hidden;
}

.metric-row > div {
  padding: 18px 20px;
  border-inline-end: 1px solid var(--line);
}

.metric-row > div:last-child {
  border-inline-end: 0;
}

.metric-row dt {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 650;
}

.metric-row dd {
  margin: 2px 0 0;
  font-size: 1.35rem;
  font-weight: 760;
}

.abstract-text {
  margin: 0;
  color: #30423a;
  font-size: 1.03rem;
  line-height: 1.85;
}

.detail-sidebar {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 20px;
}

.side-panel {
  padding: 24px;
}

.side-panel label,
.comment-form label,
.app-dialog label {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
}

.side-panel select,
.comment-form textarea,
.app-dialog input {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
}

.side-panel select,
.app-dialog input {
  height: 48px;
  padding: 0 12px;
}

.side-panel .button {
  margin-top: 12px;
}

.form-status {
  min-height: 1.4em;
  margin: 10px 0 0;
  color: var(--primary-dark);
  font-size: 0.84rem;
}

.paper-hero {
  margin-bottom: 28px;
  padding: 32px 34px 34px;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius-lg) + 4px);
  background:
    radial-gradient(circle at 100% 0, rgba(34, 125, 98, 0.12), transparent 34%),
    linear-gradient(145deg, #fff 0%, #f4f7f2 100%);
  box-shadow: var(--shadow-sm);
}

.paper-hero .breadcrumbs {
  margin-bottom: 24px;
}

.paper-detail__header {
  margin-bottom: 0;
}

.paper-detail__header h1 {
  max-width: 900px;
  margin: 14px 0 16px;
  font-size: clamp(2.45rem, 4.4vw, 4rem);
  line-height: 1.02;
}

.paper-authors-wrap {
  max-width: 900px;
}

.paper-authors {
  margin: 0;
  line-height: 1.7;
}

.authors-toggle {
  margin-top: 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--primary-dark);
  cursor: pointer;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 750;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.paper-meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 17px 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  list-style: none;
}

.paper-meta-line li + li {
  position: relative;
}

.paper-meta-line li + li::before {
  position: absolute;
  inset-inline-start: -13px;
  color: var(--line-strong);
  content: "•";
}

.paper-primary-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.paper-primary-actions .button {
  min-height: 44px;
}

.paper-copy-button {
  border-color: var(--line);
}

.copy-status {
  min-height: 1.3em;
  color: var(--primary-dark);
  font-size: 0.82rem;
}

.paper-footprint {
  margin-bottom: 24px;
}

.paper-footprint .metric-row {
  margin-bottom: 0;
  background: linear-gradient(120deg, var(--surface-soft), #edf5f0);
}

.section-heading--compact {
  align-items: flex-end;
  margin-bottom: 16px;
}

.section-heading--compact h2 {
  font-size: 1.55rem;
}

.abstract-panel {
  position: relative;
  overflow: hidden;
}

.abstract-panel::before {
  position: absolute;
  inset-block: 28px;
  inset-inline-start: 0;
  width: 3px;
  border-radius: 0 4px 4px 0;
  background: var(--accent);
  content: "";
}

.record-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.record-grid > div {
  min-width: 0;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.record-grid > div:nth-child(odd) {
  border-inline-end: 1px solid var(--line);
}

.record-grid > div:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.record-grid dt {
  margin-bottom: 4px;
  color: var(--ink-faint);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.record-grid dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.identifier-value {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.82rem !important;
}

.save-panel {
  border-color: #b8d8cc;
  background: linear-gradient(145deg, #fff, var(--primary-soft));
}

.save-panel > p {
  margin: -7px 0 14px;
  color: var(--ink-soft);
  font-size: 0.88rem;
  line-height: 1.55;
}

.paper-toc {
  display: grid;
  gap: 4px;
}

.paper-toc h2 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.paper-toc a {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 0.86rem;
  font-weight: 650;
  text-decoration: none;
}

.paper-toc a:hover {
  background: var(--surface-soft);
  color: var(--primary-dark);
}

.related-list li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
}

.related-list .related-list__rank {
  margin-top: 2px;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
}

.related-list li > div > span {
  display: block;
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 0.77rem;
}

.evaluation-page > section { margin-top: 42px; }
.evaluation-arm { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 26px; }
.evaluation-arm p { margin: 4px 0 0; color: var(--ink-soft); }
.evaluation-arm__status { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.section-heading h2 { margin: 3px 0 0; color: var(--ink); font-size: 1.75rem; }
.section-heading > span { color: var(--ink-faint); font-size: .85rem; }
.evaluation-metrics { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin: 0 0 20px; }
.evaluation-metrics > div { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow-sm); }
.evaluation-metrics dt { color: var(--ink-soft); font-size: .78rem; font-weight: 700; }
.evaluation-metrics dd { margin: 5px 0 0; color: var(--ink); font-size: 1.45rem; font-weight: 780; }
.evaluation-outcomes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0 0 20px; }
.evaluation-outcomes > div { padding: 15px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-soft); }
.evaluation-outcomes dt { color: var(--ink-soft); font-size: .76rem; font-weight: 700; }
.evaluation-outcomes dd { margin: 3px 0 0; color: var(--ink); font-size: 1.15rem; font-weight: 760; }
.evaluation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.evaluation-grid > * { min-width: 0; }
.evaluation-grid .content-panel { margin: 0; }
.evaluation-grid h3 { margin: 0 0 14px; font-size: 1.05rem; }
.evaluation-caveat { display: grid; grid-template-columns: minmax(170px, .35fr) 1fr; gap: 18px; margin-bottom: 18px; padding: 17px 20px; border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--line)); border-radius: var(--radius); background: color-mix(in srgb, var(--accent) 5%, var(--surface)); }
.evaluation-caveat strong { color: var(--ink); }
.evaluation-caveat p { margin: 0; color: var(--ink-soft); line-height: 1.65; }
.evaluation-metrics--paired { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.paired-list { display: grid; gap: 16px; }
.paired-card { overflow: hidden; border: 1px solid var(--line); border-radius: calc(var(--radius) + 2px); background: var(--surface); box-shadow: var(--shadow-sm); }
.paired-card__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; padding: 20px 22px; border-bottom: 1px solid var(--line); background: var(--surface-soft); }
.paired-card__header h3 { max-width: 780px; margin: 3px 0 4px; font-size: 1.05rem; line-height: 1.45; }
.paired-card__header p { margin: 0; color: var(--ink-faint); font-size: .78rem; }
.paired-card__index { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .08em; }
.paired-card__comparison { display: grid; grid-template-columns: minmax(0, 1fr) 150px minmax(0, 1fr); gap: 0; }
.paired-card__comparison > section { min-width: 0; padding: 20px 22px; }
.paired-card__comparison > section:last-child { border-inline-start: 1px solid var(--line); }
.paired-arm-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 15px; }
.paired-arm-title span { font-weight: 800; }
.paired-arm-title strong { color: var(--accent); font-size: 1.05rem; }
.paired-arm-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; margin: 0 0 13px; }
.paired-arm-metrics > div { padding: 10px; border-radius: 9px; background: var(--surface-soft); }
.paired-arm-metrics dt { color: var(--ink-faint); font-size: .68rem; }
.paired-arm-metrics dd { margin: 3px 0 0; font-weight: 780; }
.paired-card__comparison small { display: block; overflow: hidden; color: var(--ink-faint); font-size: .72rem; text-overflow: ellipsis; white-space: nowrap; }
.paired-delta { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; padding: 18px 12px; border-inline-start: 1px solid var(--line); background: color-mix(in srgb, var(--accent) 4%, var(--surface)); text-align: center; }
.paired-delta span { color: var(--ink-faint); font-size: .7rem; }
.paired-delta strong { margin-bottom: 6px; font-size: 1rem; }
.paired-delta small { color: var(--ink-faint); line-height: 1.35; }
.paired-card__status { display: flex; flex-wrap: wrap; gap: 7px; padding: 0 22px 17px; }
.status-badge--warning { border-color: color-mix(in srgb, #b45309 30%, var(--line)); background: color-mix(in srgb, #f59e0b 10%, var(--surface)); color: #92400e; }
.paired-results { border-top: 1px solid var(--line); }
.paired-results summary { padding: 14px 22px; cursor: pointer; color: var(--accent); font-size: .82rem; font-weight: 760; }
.paired-results > div { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.paired-results ol { margin: 0; padding: 14px 22px; list-style: none; }
.paired-results ol + ol { border-inline-start: 1px solid var(--line); }
.paired-results li { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: .8rem; }
.paired-results li:last-child { border-bottom: 0; }
.paired-results li > span { color: var(--ink-faint); font-weight: 750; }
.paired-results a { overflow: hidden; color: var(--ink); text-overflow: ellipsis; white-space: nowrap; }
.compact-metrics { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.compact-metrics li { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.table-shell { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.table-shell:focus { outline: 3px solid var(--focus); outline-offset: 3px; }
.evaluation-table { width: 100%; min-width: 780px; border-collapse: collapse; }
.evaluation-table--compact { min-width: 520px; }
.table-shell--flat { border-radius: var(--radius-sm); box-shadow: none; }
.evaluation-table th, .evaluation-table td { padding: 15px 17px; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
.evaluation-table th { background: var(--surface-soft); color: var(--ink-soft); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
.evaluation-table tr:last-child td { border-bottom: 0; }
.evaluation-table small { display: block; margin-top: 4px; color: var(--ink-faint); }
.evaluation-table code { padding: 2px 5px; border-radius: 5px; background: var(--surface-soft); color: var(--ink); }
.metric-chips { display: flex; flex-wrap: wrap; gap: 5px; }
.metric-chips span { padding: 3px 7px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-dark); font-size: .72rem; white-space: nowrap; }

@media (max-width: 900px) {
  .evaluation-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evaluation-outcomes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .evaluation-grid { grid-template-columns: 1fr; }
  .evaluation-metrics--paired { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .paired-card__comparison { grid-template-columns: 1fr; }
  .paired-card__comparison > section:last-child, .paired-delta { border-inline-start: 0; border-top: 1px solid var(--line); }
  .paired-delta { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .evaluation-arm, .section-heading { align-items: flex-start; flex-direction: column; }
  .evaluation-metrics { grid-template-columns: 1fr; }
  .evaluation-outcomes { grid-template-columns: 1fr; }
  .evaluation-caveat, .paired-results > div { grid-template-columns: 1fr; }
  .evaluation-metrics--paired { grid-template-columns: 1fr 1fr; }
  .paired-card__header { align-items: stretch; flex-direction: column; }
  .paired-arm-metrics { grid-template-columns: 1fr; }
  .paired-results ol + ol { border-inline-start: 0; border-top: 1px solid var(--line); }
}

.method-note {
  margin: -7px 0 18px;
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.55;
}

.related-list,
.comment-list,
.paper-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-list li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.related-list a {
  display: block;
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 680;
  line-height: 1.45;
}

.related-list span {
  display: block;
  margin-top: 4px;
  color: var(--ink-faint);
  font-size: 0.77rem;
}

.comment-form {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.comment-form textarea {
  min-height: 112px;
  padding: 12px;
  resize: vertical;
}

.comment-form .button {
  margin-top: 10px;
}

.comment-list li {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.comment-list p {
  margin: 8px 0 0;
}

.notice,
.empty-inline {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--ink-soft);
}

.notice a {
  font-weight: 650;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.profile-hero {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 28px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--surface), var(--primary-soft));
}

.profile-avatar {
  display: grid;
  width: 88px;
  height: 88px;
  flex: 0 0 88px;
  place-items: center;
  border-radius: 28px;
  background: var(--primary);
  color: #fff;
  font-size: 2.2rem;
  font-weight: 760;
}

.profile-hero h1 {
  margin-bottom: 6px;
}

.paper-list__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: start;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.paper-list__item:first-child {
  padding-top: 4px;
  border-top: 0;
}

.paper-list__rank {
  color: var(--ink-faint);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.paper-list h3 {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.45;
}

.paper-list h3 a {
  color: var(--ink);
}

.paper-list p {
  margin: 6px 0 0;
  color: var(--ink-faint);
  font-size: 0.82rem;
}

.paper-list .paper-list__summary {
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.55;
}

.paper-list__action {
  margin: 0;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.library-card {
  min-height: 245px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.library-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.library-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 38px;
}

.library-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 1.5rem;
}

.library-card__link,
.library-card__link:hover {
  color: inherit;
  text-decoration: none;
}

.library-card h2 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 740;
}

.library-card p {
  margin: 5px 0 24px;
  color: var(--ink-soft);
}

.app-dialog {
  width: min(calc(100% - 32px), 500px);
  padding: 0;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-lg);
}

.app-dialog::backdrop {
  background: rgba(10, 25, 20, 0.48);
  backdrop-filter: blur(4px);
}

.app-dialog form {
  padding: 28px;
}

.dialog-heading,
.dialog-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.dialog-heading {
  margin-bottom: 24px;
}

.dialog-heading h2 {
  margin: 2px 0 0;
  font-size: 1.45rem;
}

.dialog-actions {
  justify-content: flex-end;
  margin-top: 22px;
}

.empty-state {
  padding: 44px 24px;
  text-align: center;
}

.empty-state--wide {
  grid-column: 1 / -1;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.empty-state__icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 16px;
  place-items: center;
  border-radius: 18px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.6rem;
}

.empty-state h2,
.empty-state h3 {
  margin: 0 0 8px;
  color: var(--ink);
}

.empty-state p {
  max-width: 500px;
  margin: 0 auto 20px;
  color: var(--ink-soft);
}

.loading-state {
  padding: 42px;
  color: var(--ink-soft);
  text-align: center;
}

.preferences-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}

.preferences-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.8fr);
  align-items: start;
  gap: 24px;
}

.selected-topics {
  position: sticky;
  top: 96px;
}

.discipline-group {
  border-top: 1px solid var(--line);
}

.discipline-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 2px;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.discipline-group summary::-webkit-details-marker {
  display: none;
}

.discipline-count {
  min-width: 30px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--ink-soft);
  font-size: 0.76rem;
  text-align: center;
}

.topic-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  padding: 0 0 20px;
}

.topic-choice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-align: start;
}

.topic-choice:hover,
.topic-choice.is-selected {
  border-color: #9dccbc;
  background: var(--primary-soft);
  color: var(--primary-dark);
}

.selected-topic-list {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.selected-topic {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid #b8dfd2;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 650;
}

.method-banner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  margin-bottom: 24px;
  padding: 22px 24px;
  background: linear-gradient(110deg, var(--primary-soft), var(--surface));
}

.method-banner__icon {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.07em;
}

.method-banner h2 {
  margin: 0 0 3px;
  font-size: 1.02rem;
}

.method-banner p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.87rem;
}

.result-count {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.search-filters {
  max-width: 980px;
  margin: 24px auto 0;
  padding: 18px;
  border: 1px solid rgba(155, 183, 171, 0.72);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  text-align: start;
}

.search-filters legend {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-inline: 7px;
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 780;
}

.search-filters legend small {
  color: var(--accent);
  font-size: 0.68rem;
}

.search-filters__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  align-items: end;
  gap: 10px;
}

.search-filters label:not(.search-filter-check) {
  display: grid;
  gap: 6px;
}

.search-filters label > span {
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-weight: 700;
}

.search-filters input[type="number"],
.search-filters select,
.search-library-tool select {
  width: 100%;
  height: 40px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  font-size: 0.78rem;
}

.search-filter-check {
  display: flex;
  min-height: 40px;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--primary-soft);
}

.search-filter-check input { accent-color: var(--primary); }

.search-filters__clear {
  display: inline-block;
  margin-top: 11px;
  color: var(--ink-faint);
  font-size: 0.72rem;
  font-weight: 680;
}

.search-library-tool {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  margin: -3px 0 18px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.search-library-tool label { font-weight: 720; }
.search-library-tool select { width: min(260px, 100%); height: 36px; }
.search-library-tool [role="status"] { min-height: 1em; color: var(--primary-dark); }

.result-evidence {
  display: grid;
  gap: 8px;
  margin-top: 15px;
  padding: 12px 14px;
  border: 1px solid #c9ddd5;
  border-radius: 11px;
  background: linear-gradient(140deg, #f7fbf9, var(--primary-soft));
}

.result-evidence > strong {
  color: var(--ink);
  font-size: 0.78rem;
}

.result-evidence__reason,
.result-evidence--fallback > span {
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.5;
}

.quick-save-status {
  min-height: 1em;
  color: var(--primary-dark);
  font-size: 0.7rem;
  text-align: center;
}

.live-search-feedback {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 32px;
  margin-top: 10px;
  gap: 14px;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.staff-experiment {
  max-width: 860px;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--line));
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--primary) 6%, var(--surface));
}

.staff-experiment__toggle {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  font-weight: 700;
}

.staff-experiment > p {
  margin: 0.45rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.staff-experiment__details {
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--line);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 0.88rem;
}

.live-search-results {
  margin: 26px 0 0;
}

.result-card--live {
  margin-bottom: 14px;
}

.result-explanation {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.result-explanation summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 13px 0 4px;
  color: var(--primary-dark);
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
}

.result-explanation summary::before {
  content: "＋";
}

.result-explanation[open] summary::before {
  content: "−";
}

.result-explanation__body {
  padding: 8px 0 18px;
}

.result-explanation__body p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.relevance-feedback { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.relevance-feedback__button { padding: 5px 10px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); color: var(--ink-soft); cursor: pointer; font-size: .76rem; font-weight: 680; }
.relevance-feedback__button:hover, .relevance-feedback__button[aria-pressed="true"] { border-color: var(--primary); background: var(--primary-soft); color: var(--primary-dark); }
.relevance-feedback__status { min-height: 1.2em; color: var(--ink-soft); font-size: .75rem; }

.evidence-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.evidence-chips span {
  display: inline-flex;
  padding: 4px 9px;
  border: 1px solid #b8d8cd;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.74rem;
  font-weight: 680;
}

.recommendation-explanation {
  max-width: 760px;
}

.recommendation-method {
  color: var(--primary) !important;
  font-weight: 650;
}

.load-more-wrap {
  padding-top: 22px;
  border-top: 1px solid var(--line);
  text-align: center;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid rgba(242, 107, 56, 0.45);
  outline-offset: 3px;
}

@media (max-width: 980px) {
  .search-filters__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .detail-layout,
  .preferences-grid {
    grid-template-columns: 1fr;
  }

  .detail-sidebar,
  .selected-topics {
    position: static;
  }

  .library-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .site-header__inner {
    grid-template-columns: auto auto 1fr;
    gap: 14px;
  }

  .nav-toggle {
    display: block;
    order: 2;
  }

  .primary-nav {
    position: absolute;
    top: 72px;
    right: 0;
    left: 0;
    display: none;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
  }

  .primary-nav--open {
    display: grid;
  }

  .primary-nav a {
    padding: 10px;
    border-radius: 8px;
  }

  .primary-nav a[aria-current="page"] {
    background: var(--surface-soft);
  }

  .primary-nav a[aria-current="page"]::after {
    display: none;
  }

  .header-actions {
    order: 3;
  }

  .trust-strip__items,
  .paper-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-meta {
    grid-column: 1 / -1;
    text-align: start;
  }

  .auth-shell {
    grid-template-columns: 0.72fr 1fr;
  }

  .auth-story {
    padding: 35px;
  }

  .auth-panel {
    padding: 40px;
  }

  .search-layout {
    grid-template-columns: 1fr;
  }

  .search-note {
    position: static;
  }
}

@media (max-width: 760px) {
  .header-actions {
    gap: 6px;
  }

  .header-actions .button {
    padding-inline: 9px;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .page-shell {
    width: min(calc(100% - 24px), var(--content));
    padding: 32px 0 58px;
  }

  .page-header--split,
  .preferences-header {
    align-items: stretch;
    flex-direction: column;
  }

  .page-header--split .button,
  .preferences-header .button {
    width: 100%;
  }

  .paper-detail__header h1,
  .page-header h1,
  .profile-hero h1 {
    font-size: clamp(2rem, 10vw, 3rem);
    letter-spacing: -0.04em;
  }

  .paper-hero {
    margin-inline: -4px;
    padding: 23px 18px 25px;
    border-radius: var(--radius);
  }

  .paper-primary-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .paper-primary-actions .button {
    width: 100%;
  }

  .copy-status {
    text-align: center;
  }

  .content-panel,
  .side-panel {
    padding: 21px 18px;
    border-radius: var(--radius);
  }

  .metric-row {
    grid-template-columns: 1fr;
  }

  .metric-row > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-inline-end: 0;
    border-bottom: 1px solid var(--line);
  }

  .metric-row > div:last-child {
    border-bottom: 0;
  }

  .metric-row dd {
    font-size: 1.05rem;
  }

  .record-grid {
    grid-template-columns: 1fr;
  }

  .record-grid > div,
  .record-grid > div:nth-child(odd),
  .record-grid > div:nth-last-child(-n + 2) {
    border-inline-end: 0;
    border-bottom: 1px solid var(--line);
  }

  .record-grid > div:last-child {
    border-bottom: 0;
  }

  .library-grid,
  .topic-choice-grid {
    grid-template-columns: 1fr;
  }

  .library-card {
    min-height: 210px;
  }

  .profile-hero {
    align-items: flex-start;
    padding: 24px 20px;
  }

  .profile-avatar {
    width: 58px;
    height: 58px;
    flex-basis: 58px;
    border-radius: 18px;
    font-size: 1.45rem;
  }

  .paper-list__item {
    grid-template-columns: 34px minmax(0, 1fr) auto;
    gap: 10px;
  }

  .paper-list__summary {
    display: none;
  }

  .method-banner {
    grid-template-columns: 1fr;
  }

  .method-banner__icon {
    width: 48px;
    height: 48px;
  }

  .dialog-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .dialog-actions .button {
    width: 100%;
  }

  .site-header__inner {
    width: min(calc(100% - 24px), var(--content));
  }

  .brand__badge,
  .account-label,
  .header-login {
    display: none;
  }

  .hero {
    padding-top: 62px;
  }

  .hero h1 {
    letter-spacing: -0.045em;
  }

  .research-composer__icon {
    display: none;
  }

  .research-composer input {
    height: 48px;
    padding-inline-start: 7px;
    font-size: 15px;
  }

  .research-composer__submit {
    width: 48px;
    height: 48px;
  }

  .trust-strip__items,
  .paper-grid,
  .discipline-grid {
    grid-template-columns: 1fr;
  }

  .section-heading,
  .onboarding__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-meta {
    grid-column: auto;
  }

  .auth-main {
    padding: 22px 14px 50px;
  }

  .auth-shell {
    grid-template-columns: 1fr;
  }

  .auth-story {
    display: none;
  }

  .auth-panel {
    padding: 34px 25px;
  }

  .field-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .search-page {
    width: min(calc(100% - 24px), 1080px);
    padding-top: 40px;
  }

  .search-bar {
    align-items: stretch;
    flex-wrap: wrap;
  }

  .search-bar__icon {
    align-self: center;
  }

  .search-bar .button {
    width: 100%;
  }

  .search-results__summary,
  .result-card {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .result-card__actions {
    width: 100%;
    flex-direction: row;
    align-items: center;
  }

  .result-card__actions .button {
    flex: 1;
  }

  .search-start {
    grid-template-columns: 1fr;
  }

  .profile-strength {
    width: 100%;
  }

  .onboarding-main {
    padding-inline: 12px;
  }

  .onboarding-tabs {
    overflow-x: auto;
    grid-template-columns: repeat(3, minmax(145px, 1fr));
  }

  .onboarding-panel {
    padding: 25px 18px;
  }

  .onboarding-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }

  .onboarding-actions__group {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .onboarding-progress {
    text-align: center;
  }
}

@media (max-width: 980px) {
  .about-hero {
    grid-template-columns: 1fr;
    padding-block: 62px;
    gap: 42px;
  }

  .about-signal {
    width: min(100%, 500px);
    min-height: 500px;
    margin-inline: auto;
  }

  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .principle-grid article:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .search-hero {
    padding: 32px 18px 26px;
    border-radius: var(--radius);
  }

  .search-hero h1 {
    font-size: clamp(2.25rem, 11vw, 3.25rem);
    letter-spacing: -0.05em;
  }

  .retrieval-pipeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .retrieval-pipeline > i {
    display: none;
  }

  .retrieval-pipeline > div {
    display: block;
    padding: 10px 5px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.68);
    text-align: center;
  }

  .retrieval-pipeline > div > span,
  .retrieval-pipeline strong,
  .retrieval-pipeline small {
    display: block;
  }

  .result-card:not(.result-card--live) {
    grid-template-columns: 1fr;
  }

  .search-filters__grid {
    grid-template-columns: 1fr 1fr;
  }

  .search-filter-check {
    grid-column: 1 / -1;
  }

  .search-library-tool {
    align-items: stretch;
    flex-direction: column;
  }

  .result-card__rank {
    padding: 0;
  }

  .about-hero,
  .about-section,
  .about-boundary,
  .about-cta,
  .about-stats {
    width: min(calc(100% - 24px), var(--content));
  }

  .about-hero {
    min-height: auto;
    padding: 52px 0;
  }

  .about-hero h1 {
    font-size: clamp(2.75rem, 13vw, 4rem);
  }

  .about-signal {
    min-height: 350px;
  }

  .about-signal__core {
    width: 112px;
    height: 112px;
  }

  .about-signal__node { min-width: 74px; padding: 10px; }
  .about-signal__node--one { top: 18px; left: 20px; }
  .about-signal__node--two { top: 55px; right: 4px; }
  .about-signal__node--three { right: 22px; bottom: 22px; }

  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

  .about-stats > div {
    padding: 20px;
    border-bottom: 1px solid var(--line);
  }

  .about-stats > div:nth-child(2) { border-inline-end: 0; }
  .about-stats > div:nth-last-child(-n + 2) { border-bottom: 0; }

  .about-section,
  .about-boundary {
    padding-block: 74px;
  }

  .principle-grid,
  .new-grid,
  .boundary-columns {
    grid-template-columns: 1fr;
  }

  .principle-grid article:last-child { grid-column: auto; }

  .about-new {
    width: min(calc(100% - 24px), var(--content));
    padding: 58px 18px;
  }

  .about-workflow li {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
  }

  .boundary-columns > div + div {
    border-top: 1px solid var(--line);
    border-inline-start: 0;
  }

  .about-cta {
    padding: 52px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --line: #a9b5ad;
    --line-strong: #718078;
    --ink-soft: #34433d;
  }
}

/* Keep shared chrome overrides last in the cascade. */
.site-header { border-bottom-color: color-mix(in srgb, var(--primary) 14%, var(--line)); background: color-mix(in srgb, var(--canvas) 89%, transparent); box-shadow: 0 1px 0 rgba(20, 35, 29, .02); }
.site-header__inner { min-height: 76px; gap: 24px; }
.primary-nav { justify-content: center; gap: 3px; }
.primary-nav > a { display: flex; align-items: center; min-height: 42px; padding: 9px 11px; border-radius: 10px; font-size: 13px; }
.primary-nav > a:hover { background: color-mix(in srgb, var(--surface) 72%, transparent); }
.primary-nav > a[aria-current="page"] { background: var(--primary-soft); color: var(--primary-dark); }
.primary-nav > a[aria-current="page"]::after { display: none; }
.header-actions { gap: 9px; }
.language-menu summary { width: auto; min-width: 58px; height: 40px; padding: 0 10px; gap: 5px; border-radius: 10px; background: color-mix(in srgb, var(--surface) 76%, transparent); }
.language-menu__panel, .account-menu__panel { top: calc(100% + 12px); min-width: 190px; padding: 9px; border-color: var(--line-strong); }
.account-menu summary { min-height: 42px; padding: 4px 8px 4px 5px; gap: 8px; border: 1px solid transparent; border-radius: 12px; font-size: 13px; }
[dir="rtl"] .account-menu summary { padding: 4px 5px 4px 8px; }
.site-footer { border-top: 0; background: #11231d; color: #f7faf8; }
.site-footer__inner { grid-template-columns: minmax(280px, 1.65fr) repeat(3, minmax(120px, .7fr)); align-items: start; padding: 58px 0 44px; gap: 48px; }
.site-footer p { max-width: 460px; color: #aec0b9; }

@media (max-width: 1040px) {
  .site-header__inner { grid-template-columns: auto auto 1fr; gap: 13px; }
  .nav-toggle { display: block; order: 2; }
  .header-actions { order: 3; }
  .primary-nav { position: absolute; top: calc(100% + 8px); right: 12px; left: 12px; display: none; max-height: calc(100vh - 104px); overflow-y: auto; padding: 12px; border: 1px solid var(--line-strong); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow-lg); }
  .primary-nav--open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; }
  .primary-nav > a { min-height: 58px; padding: 9px 10px; }
  .primary-nav > a[aria-current="page"] { background: var(--primary-soft); }
  .site-footer__inner { grid-template-columns: 1.5fr repeat(3, 1fr); gap: 28px; }
  .footer-meta { grid-column: auto; }
}

@media (max-width: 760px) {
  .site-header__inner { min-height: 68px; }
  .site-footer__inner { grid-template-columns: 1.25fr 1fr; padding: 44px 0 34px; gap: 34px 22px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .site-header__inner { grid-template-columns: auto auto 1fr; width: min(calc(100% - 20px), var(--content)); gap: 8px; }
  .header-actions .button, .header-login, .account-label, .account-chevron { display: none; }
  .primary-nav { top: calc(100% + 6px); right: 8px; left: 8px; }
  .primary-nav--open { grid-template-columns: 1fr; }
  .primary-nav__mobile-actions { display: flex; }
  .site-footer__inner { grid-template-columns: 1fr 1fr; width: min(calc(100% - 28px), var(--content)); }
}