/* ─── LITE123 SHELL ───────────────────────────────────────────────────────── */

.hd-t5 {
  width: min(1640px, calc(100% - 48px));
  min-height: 88px;
  background-color: #0024ff;
  border: 3px solid #ffffff;
  border-radius: 56px;
  margin: 24px auto 40px;
  position: relative;
  z-index: 110;
  box-sizing: border-box;
}

.h-in-j2 {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 88px;
  padding: 0 32px;
  box-sizing: border-box;
  gap: 24px;
}

.l-g0z a {
  display: inline-flex;
  align-items: center;
}

.i-l4p {
  width: 84px;
  height: 56px;
  object-fit: contain;
}

.p-b7m {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-inline-start: auto;
}

.i-p1k {
  width: 32px;
  height: 32px;
}

.t-n8c {
  color: #ffffff;
  font-size: 18px;
  line-height: 1.2;
  text-align: center;
}

.n-v3d {
  margin-inline-start: 24px;
}

.u-l8f {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 18px;
}

.i-m2n,
.i-o1c {
  margin: 0;
}

.a-x9c,
.a-z2p {
  color: #ffffff;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.a-x9c {
  font-size: 18px;
  line-height: 1.2;
}

.auth-nav-item {
  display: flex;
  align-items: center;
}

.auth-nav-link,
.auth-nav-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.42);
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.auth-nav-link:hover,
.auth-nav-button:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  transform: translateY(-1px);
}

.auth-nav-link--primary,
.auth-nav-button--primary {
  background: rgba(13, 31, 160, 0.92);
  border-color: rgba(255, 255, 255, 0.58);
  box-shadow: 0 10px 22px rgba(0, 12, 88, 0.28);
  color: #ffffff;
}

.auth-nav-link--primary:hover,
.auth-nav-button--primary:hover {
  background: rgba(21, 43, 199, 0.96);
  border-color: rgba(255, 255, 255, 0.72);
  color: #ffffff;
}

.auth-nav-link--ghost,
.auth-nav-button--ghost {
  background: transparent;
}

.auth-nav-link__icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
  flex-shrink: 0;
}

.a-x9c:hover,
.a-z2p:hover,
.a-x9c[aria-current="page"],
.a-z2p[aria-current="page"] {
  opacity: 0.78;
}

.m-b8g {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-inline-start: auto;
  width: 48px;
  height: 32px;
  flex-direction: column;
  justify-content: space-between;
}

.m-i1n {
  width: 100%;
  height: 6px;
  background-color: #ffffff;
  border-radius: 4px;
  display: block;
}

.ft-s8r {
  background-color: #0024ff;
  padding: 64px 0;
  margin-top: 160px;
}

.ft-c4n {
  max-width: 1640px;
  margin: 0 auto;
  padding: 0 20px;
}

.ft-t-w {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 64px;
  gap: 40px;
}

.ft-l-g {
  width: 205px;
  height: 205px;
  object-fit: contain;
}

.ft-n-w {
  display: flex;
  gap: 48px;
}

.ft-n-c {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ft-n-c a {
  color: #ffffff;
  font-size: 18px;
  line-height: 1.2;
  text-decoration: none;
}

.ft-b-w {
  display: flex;
  flex-direction: column;
  gap: 64px;
}

.ft-a-w {
  display: flex;
  gap: 32px;
}

.ft-a-c {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ft-a-h {
  color: #fffffb;
  font-size: 32px;
  font-weight: 700;
}

.ft-a-p {
  color: #ffffff;
  font-size: 18px;
  line-height: 1.45;
  margin: 0;
  max-width: none;
}

.ft-l-b {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 24px;
  text-align: center;
}

.ft-p-l {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.ft-p-l a,
.ft-c-p {
  color: #ffffff;
  font-size: 16px;
  text-decoration: none;
}

.o-v7r {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 36, 255, 0.95);
  z-index: 999;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.o-v7r.active {
  display: flex;
}

.m-c8w {
  width: min(100%, 720px);
  padding: 80px 24px 24px;
}

.c-x5v {
  position: absolute;
  top: 32px;
  right: 32px;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 40px;
  cursor: pointer;
}

.u-m9b {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.a-z2p {
  font-size: clamp(1.8rem, 1.2rem + 2vw, 2.5rem);
  font-weight: 700;
}

.auth-nav-link--mobile,
.auth-nav-button--mobile {
  justify-content: center;
  width: 100%;
  padding: 16px 22px;
  font-size: 1.1rem;
}

.auth-nav-link--mobile .auth-nav-link__icon {
  width: 20px;
  height: 20px;
}

@media (max-width: 1400px) {
  .p-b7m {
    margin-inline-start: 0;
  }

  .n-v3d {
    margin-inline-start: 0;
  }

  .h-in-j2 {
    justify-content: space-between;
  }
}

@media (max-width: 1540px) {
  .p-b7m {
    display: none;
  }
}

@media (max-width: 1100px) {
  .p-b7m,
  .n-v3d {
    display: none;
  }

  .m-b8g {
    display: flex;
  }
}

@media (max-width: 900px) {
  .ft-t-w,
  .ft-n-w,
  .ft-a-w {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 600px) {
  .hd-t5 {
    width: calc(100% - 24px);
    margin: 12px auto 24px;
    min-height: 72px;
    border-radius: 40px;
  }

  .h-in-j2 {
    min-height: 72px;
    padding: 0 20px;
  }

  .i-l4p {
    width: 60px;
  }

  .ft-l-g {
    width: 140px;
    height: 140px;
  }

  .ft-p-l {
    gap: 16px;
    flex-direction: column;
  }
}

/* ─── SITE HEADER ─────────────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--color-white);
  border-block-end: var(--border-thin);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.site-header__logo-mark {
  width: 36px;
  height: 36px;
  background: var(--color-cobalt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.site-header__brand-name {
  font-size: var(--type-sm);
  font-weight: 700;
  color: var(--color-graphite);
  line-height: 1.2;
  max-width: 160px;
}

.site-header__brand-name span {
  display: block;
  font-weight: 400;
  font-size: var(--type-xs);
  color: var(--color-graphite-soft);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--type-sm);
  font-weight: 500;
  color: var(--color-graphite-mid);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}

.site-nav__link:hover {
  background: var(--color-fog-light);
  color: var(--color-cobalt);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-cobalt);
  background: var(--color-cobalt-pale);
  font-weight: 600;
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-cobalt);
  color: var(--color-white) !important;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-size: var(--type-sm);
  transition: background 0.2s ease, transform 0.15s ease;
  margin-inline-start: var(--space-3);
}

.site-nav__cta:hover {
  background: var(--color-cobalt-light);
  transform: translateY(-1px);
}

.nav-toggle-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: var(--border-thin);
  background: transparent;
  color: var(--color-graphite);
  cursor: pointer;
  transition: background 0.18s ease;
  flex-shrink: 0;
}

.nav-toggle-btn:hover { background: var(--color-fog-light); }
.nav-toggle-btn:focus-visible {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 2px;
}

.nav-toggle-btn__bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle-btn__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.22s ease, opacity 0.22s ease, width 0.22s ease;
  transform-origin: center;
}

.nav-toggle-btn[aria-expanded="true"] .nav-toggle-btn__bars span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle-btn[aria-expanded="true"] .nav-toggle-btn__bars span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle-btn[aria-expanded="true"] .nav-toggle-btn__bars span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* mobile nav */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(30,30,30,0.4);
  backdrop-filter: blur(2px);
}

.mobile-nav-panel {
  position: fixed;
  inset-block: 0;
  inset-inline-end: 0;
  z-index: 100;
  width: min(320px, 90vw);
  background: var(--color-white);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-panel.is-open {
  transform: translateX(0);
}

.mobile-nav-overlay.is-visible {
  display: block;
}

.mobile-nav-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block-end: var(--space-4);
  border-block-end: var(--border-thin);
}

.mobile-nav-panel__close {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-graphite-soft);
  cursor: pointer;
  background: transparent;
  transition: background 0.18s;
}

.mobile-nav-panel__close:hover { background: var(--color-fog-light); }

.mobile-nav-panel__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
}

.mobile-nav-panel__links a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--type-md);
  font-weight: 500;
  color: var(--color-graphite);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background 0.18s, color 0.18s;
}

.mobile-nav-panel__links a:hover,
.mobile-nav-panel__links a[aria-current="page"] {
  background: var(--color-cobalt-pale);
  color: var(--color-cobalt);
}

@media (max-width: 860px) {
  .site-nav { display: none; }
  .nav-toggle-btn { display: flex; }
}

/* ─── SITE FOOTER ──────────────────────────────────────────────────────────── */

.site-footer {
  background: var(--color-graphite);
  color: var(--color-fog-light);
  padding-block: var(--space-16) var(--space-8);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  padding-block-end: var(--space-10);
  border-block-end: 1px solid rgba(200,205,216,0.15);
}

@media (max-width: 900px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

.site-footer__brand p {
  font-size: var(--type-sm);
  line-height: 1.7;
  color: var(--color-fog);
  margin-block-start: var(--space-4);
  max-width: 34ch;
}

.site-footer__logo-mark {
  width: 40px;
  height: 40px;
  background: var(--color-cobalt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.2rem;
}

.site-footer__nav-col h3 {
  font-size: var(--type-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-fog);
  margin-block-end: var(--space-4);
}

.site-footer__nav-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__nav-col a {
  font-size: var(--type-sm);
  color: rgba(200,205,216,0.75);
  text-decoration: none;
  transition: color 0.18s;
}

.site-footer__nav-col a:hover { color: var(--color-white); }

.site-footer__bottom {
  padding-block-start: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: flex-start;
  justify-content: space-between;
}

.site-footer__legal {
  font-size: var(--type-xs);
  color: rgba(200,205,216,0.55);
  line-height: 1.7;
  max-width: 70ch;
}

.site-footer__legal p + p { margin-block-start: var(--space-2); }

.site-footer__credits {
  font-size: var(--type-xs);
  color: rgba(200,205,216,0.45);
  text-align: end;
  flex-shrink: 0;
}

/* ─── BUTTONS ──────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  font-size: var(--type-sm);
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  border: 2px solid transparent;
  line-height: 1;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-cobalt);
  outline-offset: 3px;
}

.btn--primary {
  background: var(--color-cobalt);
  color: var(--color-white);
  border-color: var(--color-cobalt);
}

.btn--primary:hover {
  background: var(--color-cobalt-light);
  border-color: var(--color-cobalt-light);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(46,77,150,0.3);
}

.btn--secondary {
  background: transparent;
  color: var(--color-cobalt);
  border-color: var(--color-cobalt);
}

.btn--secondary:hover {
  background: var(--color-cobalt-pale);
  transform: translateY(-1px);
}

.btn--copper {
  background: var(--color-copper);
  color: var(--color-white);
  border-color: var(--color-copper);
}

.btn--copper:hover {
  background: var(--color-copper-light);
  border-color: var(--color-copper-light);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-graphite-soft);
  border-color: var(--color-fog);
}

.btn--ghost:hover {
  background: var(--color-fog-light);
  color: var(--color-graphite);
}

.btn--outline {
  background: transparent;
  color: var(--color-cobalt);
  border-color: var(--color-cobalt);
}

.btn--outline:hover {
  background: var(--color-cobalt-pale);
  color: var(--color-cobalt);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--type-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--type-xs);
}

.btn-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* ─── EDITORIAL CARDS ──────────────────────────────────────────────────────── */

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: var(--border-thin);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card__image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-ivory-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body {
  padding: var(--space-5) var(--space-6);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-block-end: var(--space-3);
}

.card__title {
  font-size: var(--type-lg);
  font-weight: 700;
  color: var(--color-graphite);
  line-height: 1.3;
  margin-block-end: var(--space-3);
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover { color: var(--color-cobalt); }

.card__excerpt {
  font-size: var(--type-sm);
  color: var(--color-graphite-soft);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__footer {
  padding: var(--space-4) var(--space-6);
  border-block-start: var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

/* compact horizontal card */
.card-h {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-4);
  align-items: start;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: var(--border-thin);
  padding: var(--space-4);
  transition: box-shadow 0.2s ease;
}

.card-h:hover { box-shadow: var(--shadow-sm); }

.card-h__thumb {
  width: 80px;
  height: 64px;
  border-radius: var(--radius-sm);
  background: var(--color-ivory-mid);
  overflow: hidden;
  flex-shrink: 0;
}

.card-h__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-h__title {
  font-size: var(--type-sm);
  font-weight: 600;
  color: var(--color-graphite);
  line-height: 1.35;
  margin-block-end: var(--space-2);
}

.card-h__meta {
  font-size: var(--type-xs);
  color: var(--color-graphite-soft);
}

/* notebook callout */
.notebook-callout {
  border-inline-start: 3px solid var(--color-copper);
  padding: var(--space-5) var(--space-6);
  background: var(--color-copper-pale);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.notebook-callout--cobalt {
  border-color: var(--color-cobalt);
  background: var(--color-cobalt-pale);
}

.notebook-callout__label {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-copper);
  margin-block-end: var(--space-2);
}

.notebook-callout--cobalt .notebook-callout__label {
  color: var(--color-cobalt);
}

.notebook-callout__text {
  font-size: var(--type-sm);
  color: var(--color-graphite-mid);
  line-height: 1.6;
}

/* stat tile */
.stat-tile {
  background: var(--color-white);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
}

.stat-tile__number {
  font-size: var(--type-3xl);
  font-weight: 800;
  color: var(--color-cobalt);
  line-height: 1;
  margin-block-end: var(--space-2);
}

.stat-tile__label {
  font-size: var(--type-sm);
  color: var(--color-graphite-soft);
  font-weight: 500;
}

/* section header */
.section-header {
  margin-block-end: var(--space-10);
}

.section-header--split {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}

.section-header__eyebrow {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-copper);
  margin-block-end: var(--space-3);
}

.section-header__title {
  font-size: var(--type-2xl);
  font-weight: 700;
  color: var(--color-graphite);
  line-height: 1.25;
  margin-block-end: var(--space-4);
}

.section-header__lead {
  font-size: var(--type-md);
  color: var(--color-graphite-soft);
  line-height: 1.65;
  max-width: 56ch;
}

/* timeline band */
.timeline-band {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: var(--space-4);
  position: relative;
  padding-block-end: var(--space-6);
}

.timeline-item:last-child { padding-block-end: 0; }

.timeline-item__indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  padding-block-start: 4px;
}

.timeline-item__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-cobalt);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-cobalt-pale);
  flex-shrink: 0;
  z-index: 1;
}

.timeline-item__line {
  width: 2px;
  flex: 1;
  background: var(--color-fog);
  margin-block-start: 4px;
}

.timeline-item:last-child .timeline-item__line { display: none; }

.timeline-item__content {
  padding-block-end: var(--space-2);
}

.timeline-item__label {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cobalt);
  margin-block-end: var(--space-1);
}

.timeline-item__title {
  font-size: var(--type-md);
  font-weight: 600;
  margin-block-end: var(--space-2);
}

.timeline-item__desc {
  font-size: var(--type-sm);
  color: var(--color-graphite-soft);
  line-height: 1.6;
}

/* tab panel */
.tab-group {
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-white);
}

.tab-list {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  background: var(--color-ivory-mid);
  border-block-end: var(--border-thin);
}

.tab-list::-webkit-scrollbar { display: none; }

.tab-btn {
  padding: var(--space-3) var(--space-5);
  font-size: var(--type-sm);
  font-weight: 500;
  color: var(--color-graphite-soft);
  border: none;
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s, background 0.18s;
  border-block-end: 2px solid transparent;
  margin-block-end: -1px;
}

.tab-btn:hover { color: var(--color-cobalt); }

.tab-btn[aria-selected="true"] {
  color: var(--color-cobalt);
  background: var(--color-white);
  border-block-end-color: var(--color-cobalt);
  font-weight: 600;
}

.tab-panel {
  display: none;
  padding: var(--space-6);
}

.tab-panel.is-active { display: block; }

/* filter chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--type-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-fog);
  background: var(--color-white);
  color: var(--color-graphite-soft);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, color 0.18s;
}

.filter-chip:hover,
.filter-chip.is-active {
  border-color: var(--color-cobalt);
  background: var(--color-cobalt-pale);
  color: var(--color-cobalt);
}

/* comparison strip */
.comparison-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: center;
}

@media (max-width: 600px) {
  .comparison-strip {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.comparison-strip__vs {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-graphite);
  color: var(--color-white);
  font-weight: 800;
  font-size: var(--type-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-inline: auto;
}

.comparison-panel {
  background: var(--color-white);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.comparison-panel--highlight {
  border-color: var(--color-cobalt);
  background: var(--color-cobalt-pale);
}

/* progress bar */
.progress-bar {
  background: var(--color-fog-light);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  margin-block-start: var(--space-2);
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--color-cobalt);
  transition: width 0.6s ease;
}

.progress-bar__fill--copper { background: var(--color-copper); }

/* reading progress */
.reading-progress {
  position: fixed;
  inset-block-start: var(--nav-height);
  inset-inline: 0;
  height: 3px;
  z-index: 99;
  background: transparent;
}

.reading-progress__bar {
  height: 100%;
  background: var(--color-copper);
  width: 0%;
  transition: width 0.1s linear;
}

/* ─── FORM ─────────────────────────────────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--type-sm);
  font-weight: 600;
  color: var(--color-graphite-mid);
}

.form-label span[aria-hidden="true"] {
  color: var(--color-copper);
  margin-inline-start: var(--space-1);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-fog);
  border-radius: var(--radius-md);
  background: var(--color-white);
  color: var(--color-graphite);
  font-size: var(--type-base);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
  appearance: none;
}

.form-control::placeholder { color: var(--color-fog); }

.form-control:hover { border-color: var(--color-cobalt-pale); }

.form-control:focus {
  outline: none;
  border-color: var(--color-cobalt);
  box-shadow: 0 0 0 3px rgba(46,77,150,0.12);
}

.form-control.has-error {
  border-color: #C0392B;
  box-shadow: 0 0 0 3px rgba(192,57,43,0.1);
}

.form-error-msg {
  font-size: var(--type-xs);
  color: #C0392B;
  font-weight: 500;
  display: none;
}

.form-error-msg.is-visible { display: block; }

.form-hint {
  font-size: var(--type-xs);
  color: var(--color-graphite-soft);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 560px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* ─── COOKIE CONSENT BANNER ────────────────────────────────────────────────── */

.cookie-banner {
  position: fixed;
  inset-block-end: 0;
  inset-inline: 0;
  z-index: 200;
  background: var(--color-graphite);
  color: var(--color-fog-light);
  padding: var(--space-5) var(--space-6);
  border-block-start: 2px solid var(--color-cobalt);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: flex-start;
  justify-content: space-between;
}

.cookie-banner__text {
  flex: 1;
  min-width: 240px;
}

.cookie-banner__title {
  font-size: var(--type-sm);
  font-weight: 700;
  color: var(--color-white);
  margin-block-end: var(--space-2);
}

.cookie-banner__desc {
  font-size: var(--type-xs);
  color: var(--color-fog);
  line-height: 1.6;
  max-width: 60ch;
}

.cookie-banner__desc a {
  color: var(--color-cobalt-pale);
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  flex-shrink: 0;
  margin-block-start: var(--space-1);
}

.cookie-banner__prefs-btn {
  background: transparent;
  border: 1px solid rgba(200,205,216,0.4);
  color: var(--color-fog);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--type-xs);
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.18s, color 0.18s;
}

.cookie-banner__prefs-btn:hover {
  border-color: var(--color-fog);
  color: var(--color-white);
}

.cookie-banner__reject-btn {
  background: transparent;
  border: 1px solid rgba(200,205,216,0.4);
  color: var(--color-fog);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--type-xs);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}

.cookie-banner__reject-btn:hover { background: rgba(200,205,216,0.1); color: var(--color-white); }

.cookie-banner__accept-btn {
  background: var(--color-cobalt);
  border: 1px solid var(--color-cobalt);
  color: var(--color-white);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--type-xs);
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s;
}

.cookie-banner__accept-btn:hover { background: var(--color-cobalt-light); }

/* ─── DISCLOSURE BAND ──────────────────────────────────────────────────────── */

.disclosure-band {
  background: var(--color-ivory-deep);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--type-xs);
  color: var(--color-graphite-soft);
  line-height: 1.65;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.disclosure-band__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-cobalt);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-block-start: 1px;
}

/* ─── PAGINATION ───────────────────────────────────────────────────────────── */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  list-style: none;
  padding: 0;
  font-size: var(--type-xs);
  color: var(--color-graphite-soft);
}

.breadcrumb a {
  color: var(--color-cobalt);
  text-decoration: none;
  font-weight: 500;
}

.breadcrumb a:hover { text-decoration: underline; }

.breadcrumb__sep {
  color: var(--color-fog);
}

/* ─── HERO TEXTURES ────────────────────────────────────────────────────────── */

.texture-block {
  position: relative;
  overflow: hidden;
}

.texture-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(46,77,150,0.08) 0%, transparent 60%),
    radial-gradient(circle at 80% 70%, rgba(184,104,50,0.07) 0%, transparent 50%);
  pointer-events: none;
}

.geo-accent {
  position: absolute;
  pointer-events: none;
}

.geo-accent--circle {
  border-radius: 50%;
  border: 2px solid rgba(46,77,150,0.1);
}

.geo-accent--square {
  border-radius: var(--radius-md);
  border: 1.5px solid rgba(184,104,50,0.12);
  transform: rotate(15deg);
}

/* ─── DEVICE MOCKUP ────────────────────────────────────────────────────────── */

.device-frame {
  border: 8px solid var(--color-graphite);
  border-radius: 2.5rem;
  background: var(--color-ivory-mid);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.device-frame::before {
  content: '';
  display: block;
  width: 40px;
  height: 6px;
  background: var(--color-graphite);
  border-radius: var(--radius-full);
  margin: 0.5rem auto;
}

.device-frame__screen {
  min-height: 220px;
  background: var(--color-ivory);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
}

/* ─── ABSTRACT PANELS ──────────────────────────────────────────────────────── */

.abstract-panel {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  min-height: 200px;
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
}

.abstract-panel--cobalt {
  background: linear-gradient(135deg, var(--color-cobalt) 0%, var(--color-cobalt-light) 100%);
  color: var(--color-white);
}

.abstract-panel--copper {
  background: linear-gradient(135deg, var(--color-copper) 0%, var(--color-copper-light) 100%);
  color: var(--color-white);
}

.abstract-panel--graphite {
  background: linear-gradient(135deg, var(--color-graphite) 0%, var(--color-graphite-mid) 100%);
  color: var(--color-white);
}

.abstract-panel__geo {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.abstract-panel__geo::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 40px solid rgba(255,255,255,0.07);
  inset-block-start: -60px;
  inset-inline-end: -40px;
}

.abstract-panel__geo::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.05);
  inset-block-end: 30px;
  inset-inline-end: 30px;
  transform: rotate(20deg);
}

.abstract-panel__content { position: relative; z-index: 1; }

.abstract-panel__label {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.8;
  margin-block-end: var(--space-2);
}

.abstract-panel__title {
  font-size: var(--type-xl);
  font-weight: 700;
  color: inherit;
  line-height: 1.25;
  margin-block-end: var(--space-3);
}

.abstract-panel__text {
  font-size: var(--type-sm);
  opacity: 0.85;
  line-height: 1.6;
  max-width: 30ch;
}

/* ─── DATA TABLE ───────────────────────────────────────────────────────────── */

.data-table-wrap {
  overflow-x: auto;
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  background: var(--color-white);
}

.data-table {
  width: 100%;
  font-size: var(--type-sm);
}

.data-table thead tr {
  background: var(--color-ivory-mid);
}

.data-table th {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-graphite-soft);
  padding: var(--space-3) var(--space-5);
  border-block-end: var(--border-thin);
  white-space: nowrap;
}

.data-table td {
  padding: var(--space-3) var(--space-5);
  border-block-end: var(--border-thin);
  vertical-align: middle;
  color: var(--color-graphite-mid);
}

.data-table tbody tr:last-child td { border-block-end: none; }

.data-table tbody tr:hover td { background: var(--color-ivory); }

.data-table__score {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 700;
  color: var(--color-cobalt);
}

.data-table__rank {
  font-weight: 800;
  font-size: var(--type-md);
  color: var(--color-graphite);
}

.data-table__badge {
  display: inline-block;
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--type-xs);
  font-weight: 700;
}

.data-table__badge--green {
  background: #E6F5ED;
  color: #1E7A3E;
}

.data-table__badge--orange {
  background: var(--color-copper-pale);
  color: var(--color-copper);
}

.data-table__badge--blue {
  background: var(--color-cobalt-pale);
  color: var(--color-cobalt);
}

/* ─── COLLAPSIBLE ──────────────────────────────────────────────────────────── */

.collapsible-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.collapsible-item {
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--color-white);
  overflow: hidden;
}

.collapsible-trigger {
  width: 100%;
  text-align: start;
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--type-sm);
  font-weight: 600;
  color: var(--color-graphite);
  background: transparent;
  cursor: pointer;
  border: none;
  transition: background 0.18s;
}

.collapsible-trigger:hover { background: var(--color-ivory); }

.collapsible-trigger__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-graphite-soft);
  transition: transform 0.22s ease;
}

.collapsible-trigger[aria-expanded="true"] .collapsible-trigger__icon {
  transform: rotate(45deg);
  border-color: var(--color-cobalt);
  color: var(--color-cobalt);
}

.collapsible-content {
  display: none;
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--type-sm);
  color: var(--color-graphite-soft);
  line-height: 1.7;
}

.collapsible-content.is-open { display: block; }

/* ─── PAGE HERO ────────────────────────────────────────────────────────────── */

.page-hero {
  padding-block: clamp(3rem, 8vw, 6rem);
  position: relative;
  overflow: hidden;
}

.page-hero--dark {
  background: var(--color-graphite);
  color: var(--color-white);
}

.page-hero--cobalt {
  background: var(--color-cobalt);
  color: var(--color-white);
}

.page-hero--ivory { background: var(--color-ivory-mid); }

.page-hero__eyebrow {
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-block-end: var(--space-4);
  opacity: 0.8;
}

.page-hero__title {
  font-size: var(--type-4xl);
  font-weight: 800;
  line-height: 1.1;
  margin-block-end: var(--space-5);
}

.page-hero--dark .page-hero__title,
.page-hero--cobalt .page-hero__title {
  color: var(--color-white);
}

.page-hero__lead {
  font-size: var(--type-lg);
  line-height: 1.6;
  max-width: 54ch;
  opacity: 0.85;
}