:root {
  --c-primary: #FF7A00;
  --c-primary-deep: #E56600;
  --c-secondary: #FFD100;
  --c-accent: #1B3A6B;
  --c-bg: #FAF7F0;
  --c-text: #2E2E2E;
  --c-border: #E0E0E0;
  --c-gradient: #FFC300;
  --c-dark: #3D2C4E;
  --c-white: #FFFFFF;
  --font-title: "PingFang SC Bold", "Microsoft YaHei Bold", "Arial Rounded MT Bold", "Helvetica Neue", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-num: "JetBrains Mono", "Consolas", "SF Mono", monospace;
  --container: 1280px;
  --header-h: 78px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 10px 40px rgba(30, 20, 10, 0.08);
  --shadow-float: 0 18px 50px rgba(255, 122, 0, 0.18);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--c-bg);
  color: var(--c-text);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

img,
svg,
video {
  max-width: 100%;
  display: block;
  height: auto;
}

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

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--c-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--c-secondary);
  color: var(--c-accent);
}

/* ===== Skip Link ===== */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 10000;
  background: var(--c-accent);
  color: #fff;
  padding: 12px 22px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 700;
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
  color: var(--c-secondary);
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--c-bg);
  border-bottom: 2px solid var(--c-text);
  transition: box-shadow 0.4s ease;
}

.site-header[data-scrolled] {
  box-shadow: 0 6px 30px rgba(27, 58, 107, 0.12);
}

.site-header__progress {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: transparent;
  pointer-events: none;
}

.site-header__progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  transition: width 0.1s linear;
}

.site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 28px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--c-primary);
  border-radius: 14px 14px 14px 4px;
  color: #fff;
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 900;
  box-shadow: inset -2px -2px 0 rgba(0, 0, 0, 0.12), 0 4px 0 var(--c-text);
  transition: transform 0.3s ease;
}

.brand:hover .brand__mark {
  transform: rotate(-6deg) scale(1.05);
}

.brand__mark i {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-secondary);
}

.brand__mark i:nth-child(1) {
  top: 6px;
  right: 7px;
}

.brand__mark i:nth-child(2) {
  bottom: 7px;
  left: 7px;
  width: 9px;
  height: 9px;
  background: #fff;
}

.brand__mark i:nth-child(3) {
  bottom: 5px;
  right: 5px;
  width: 4px;
  height: 4px;
  background: var(--c-accent);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__text strong {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--c-text);
}

.brand__text small {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--c-primary);
  margin-top: 2px;
  white-space: nowrap;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 22px;
  background: var(--c-accent);
  color: #fff;
  border-radius: 999px;
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  box-shadow: 0 4px 0 var(--c-text);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.header-cta:hover {
  background: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(255, 122, 0, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  background: transparent;
}

.nav-toggle__box {
  position: relative;
  width: 30px;
  height: 20px;
}

.nav-toggle__box i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-text);
  border-radius: 3px;
  transition: transform 0.3s ease, opacity 0.3s ease, top 0.3s ease;
}

.nav-toggle__box i:nth-child(1) {
  top: 0;
}

.nav-toggle__box i:nth-child(2) {
  top: 8px;
}

.nav-toggle__box i:nth-child(3) {
  top: 16px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box i:nth-child(1) {
  top: 8px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box i:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box i:nth-child(3) {
  top: 8px;
  transform: rotate(-45deg);
}

.nav-toggle__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

/* ===== Header Nav ===== */
.site-header__nav {
  border-top: 2px solid var(--c-text);
  background: var(--c-bg);
}

.site-header__nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
}

.primary-nav a {
  position: relative;
  display: inline-block;
  padding: 10px 18px;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-text);
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 30%;
  height: 3px;
  border-radius: 3px;
  background: var(--c-primary);
  transition: transform 0.25s ease, width 0.25s ease;
}

.primary-nav a:hover {
  background: rgba(255, 122, 0, 0.1);
  color: var(--c-primary-deep);
  transform: translateY(-1px);
}

.primary-nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
  width: 60%;
}

.primary-nav a[aria-current="page"] {
  background: var(--c-text);
  color: var(--c-secondary);
}

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

.site-header__slogan {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--c-accent);
  white-space: nowrap;
  border-left: 3px solid var(--c-primary);
  padding-left: 14px;
}

/* ===== Footer ===== */
.site-footer {
  position: relative;
  margin-top: 100px;
  background: var(--c-dark);
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  overflow: hidden;
}

.site-footer__wave {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  color: var(--c-bg);
  line-height: 0;
  transform: translateY(-99%);
}

.site-footer__wave svg {
  width: 100%;
  height: 60px;
}

.site-footer__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 28px 32px;
  display: grid;
  grid-template-columns: 1.2fr 3fr;
  gap: 48px;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 209, 0, 0.18) 0%, transparent 260px),
    radial-gradient(circle at 10% 80%, rgba(255, 122, 0, 0.2) 0%, transparent 220px);
}

.brand--footer .brand__mark {
  background: var(--c-secondary);
  color: var(--c-dark);
  /* override shadow */
  box-shadow: inset -2px -2px 0 rgba(0, 0, 0, 0.2), 0 4px 0 var(--c-primary);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.74);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer a:hover {
  color: var(--c-secondary);
  padding-left: 4px;
}

.site-footer__trust {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.8;
  border-left: 3px solid var(--c-primary);
  padding-left: 16px;
  color: rgba(255, 255, 255, 0.58);
  max-width: 46ch;
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.site-footer__col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.site-footer__heading {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--c-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  position: relative;
  padding-left: 14px;
}

.site-footer__heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--c-primary);
  border-radius: 50%;
}

.site-footer__col p {
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.6);
}

.site-footer__bottom {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  margin-top: 12px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
}

/* ===== Back Top ===== */
.back-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(255, 122, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.2s ease;
}

.back-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--c-accent);
}

/* ===== Common Layout ===== */
.main-content {
  min-height: 60vh;
}

.container-wide {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

.container-narrow {
  max-width: 860px;
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

/* ===== Typography Utility ===== */
.t-display {
  font-family: var(--font-title);
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.t-section {
  font-family: var(--font-title);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.t-sub {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-primary-deep);
}

.t-num {
  font-family: var(--font-num);
  font-style: normal;
  font-weight: 600;
}

.lead {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(46, 46, 46, 0.8);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  border: 2px solid var(--c-text);
}

.btn--primary {
  background: var(--c-primary);
  color: #fff;
  box-shadow: 0 5px 0 var(--c-text);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(255, 122, 0, 0.3);
}

.btn--secondary {
  background: var(--c-secondary);
  color: var(--c-text);
  box-shadow: 0 5px 0 var(--c-text);
}

.btn--secondary:hover {
  transform: translateY(-2px);
  background: var(--c-gradient);
}

.btn--ghost {
  background: transparent;
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.btn--ghost:hover {
  background: var(--c-accent);
  color: #fff;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(46, 46, 46, 0.56);
  padding: 18px 0;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

.breadcrumb a {
  color: var(--c-accent);
  font-weight: 500;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--c-primary);
}

.breadcrumb span[aria-current="page"] {
  color: var(--c-text);
  font-weight: 600;
}

/* ===== Cards ===== */
.card {
  background: #fff;
  border: 2px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(27, 58, 107, 0.12);
  border-color: var(--c-primary);
}

.card__title {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-text);
  margin-bottom: 10px;
}

.card__desc {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(46, 46, 46, 0.72);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

/* ===== Figure / Image container ===== */
.figure-box {
  position: relative;
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(145deg, #FFE9CC, #FFF7E6);
  border: 2px solid var(--c-border);
  min-height: 220px;
  transition: border-color 0.2s ease;
}

.figure-box::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(circle at 70% 30%, rgba(255, 209, 0, 0.35), transparent 60%), radial-gradient(circle at 20% 80%, rgba(255, 122, 0, 0.2), transparent 50%);
}

.figure-box::after {
  content: attr(data-label);
  position: absolute;
  bottom: 12px;
  left: 12px;
  z-index: 1;
  background: var(--c-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 4px 12px;
  border-radius: 999px;
}

.figure-box:hover {
  border-color: var(--c-primary);
}

/* ===== Stat block ===== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
}

.stat {
  background: var(--c-bg);
  border: 2px solid var(--c-text);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: 4px 4px 0 var(--c-text);
  transform: translate(0, 0);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--c-text);
}

.stat__num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.2;
}

.stat__label {
  font-size: 14px;
  font-weight: 600;
  color: rgba(46, 46, 46, 0.66);
  margin-top: 6px;
}

/* ===== Badge ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--c-secondary);
  color: var(--c-text);
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1.5px solid var(--c-text);
}

.badge--orange {
  background: var(--c-primary);
  color: #fff;
}

.badge--blue {
  background: var(--c-accent);
  color: #fff;
}

/* ===== Section title w/ eyebrow ===== */
.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* ===== Filter bar ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.filter-bar__btn {
  min-height: 38px;
  padding: 0 18px;
  border: 2px solid var(--c-border);
  border-radius: 999px;
  background: #fff;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--c-text);
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.filter-bar__btn:hover {
  border-color: var(--c-primary);
  color: var(--c-primary-deep);
  transform: translateY(-1px);
}

.filter-bar__btn[aria-pressed="true"] {
  background: var(--c-text);
  color: var(--c-secondary);
  border-color: var(--c-text);
}

/* ===== Pager ===== */
.pager {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 20px 0;
}

.pager__item {
  min-width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--c-border);
  border-radius: 12px;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s ease;
  background: #fff;
}

.pager__item:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

.pager__item[aria-current="page"] {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

/* ===== Mark ===== */
mark {
  background: linear-gradient(180deg, transparent 8%, rgba(255, 209, 0, 0.65) 8%, rgba(255, 209, 0, 0.65) 100%);
  color: var(--c-text);
  padding: 0 4px;
  border-radius: 2px;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  list-style: none;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-secondary), var(--c-accent));
  border-radius: 3px;
}

.timeline li {
  position: relative;
  padding: 10px 0 26px;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 18px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 4px solid var(--c-primary);
}

/* ===== Accordion card (expandable) ===== */
.collapse-card {
  background: #fff;
  border: 2px solid var(--c-border);
  border-radius: var(--radius-md);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.collapse-card[data-expanded] {
  border-color: var(--c-primary);
  box-shadow: var(--shadow-float);
}

.collapse-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  cursor: pointer;
}

.collapse-card__title {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 800;
}

.collapse-card__toggle {
  position: relative;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--c-bg);
  border: 2px solid var(--c-text);
  transition: background 0.2s ease, transform 0.3s ease;
}

.collapse-card__toggle::before,
.collapse-card__toggle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 2px;
  background: var(--c-text);
  transform: translate(-50%, -50%);
  transition: background 0.2s ease;
}

.collapse-card__toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 0.3s ease;
}

.collapse-card[data-expanded] .collapse-card__toggle {
  background: var(--c-primary);
}

.collapse-card[data-expanded] .collapse-card__toggle::after {
  transform: translate(-50%, -50%) rotate(0);
}

.collapse-card__body {
  display: none;
  padding: 0 22px 22px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(46, 46, 46, 0.78);
}

.collapse-card[data-expanded] .collapse-card__body {
  display: block;
}

/* ===== Prose ===== */
.prose {
  max-width: 72ch;
  font-size: 16px;
  line-height: 2;
  color: rgba(46, 46, 46, 0.86);
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  font-family: var(--font-title);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-text);
  margin: 2em 0 0.6em;
}

.prose h1 {
  font-size: 40px;
}

.prose h2 {
  font-size: 31px;
  border-left: 6px solid var(--c-primary);
  padding-left: 16px;
}

.prose h3 {
  font-size: 24px;
}

.prose p {
  margin: 1em 0 0;
}

.prose ul,
.prose ol {
  margin: 1em 0;
  padding-left: 1.4em;
}

.prose li {
  margin: 0.4em 0;
}

.prose a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 600;
}

/* ===== Reveal animation ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal][data-visible] {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
  .site-header__nav {
    display: block !important;
  }
}

@media (max-width: 1023.98px) {
  .header-cta {
    display: none;
  }
  .nav-toggle {
    display: inline-flex;
  }

  .site-header__inner {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--c-bg);
    z-index: 1010;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-24px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    overscroll-behavior: contain;
    overflow-y: auto;
  }

  .site-header__nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-header__nav-inner {
    flex-direction: column;
    justify-content: center;
    padding: 50px 24px;
    text-align: center;
  }

  .primary-nav {
    flex-direction: column;
    gap: 8px;
    padding: 0;
  }

  .primary-nav a {
    font-size: 26px;
    padding: 12px 24px;
    border-radius: 12px;
  }

  .primary-nav a::after {
    display: none;
  }

  .site-header__slogan {
    border-left: none;
    border-top: 3px solid var(--c-primary);
    padding-top: 18px;
    padding-left: 0;
    font-size: 12px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }

  .site-footer__links {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767.98px) {
  :root {
    --header-logo-size: 40px;
  }

  .brand__mark {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }

  .brand__text strong {
    font-size: 19px;
  }

  .brand__text small {
    font-size: 10px;
    letter-spacing: 0.18em;
  }

  .site-header__inner {
    padding-left: 18px;
    padding-right: 18px;
  }

  .site-footer__inner {
    padding: 44px 20px 24px;
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__links {
    grid-column: auto;
    grid-template-columns: 1fr 1fr;
  }

  .site-footer__link-group--last {
    grid-column: 1 / -1;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-top {
    right: 18px;
    bottom: 18px;
    width: 42px;
    height: 42px;
  }

  .filter-bar__btn {
    font-size: 12px;
    padding: 0 14px;
    min-height: 34px;
  }
}

@media (max-width: 480px) {
  .site-header__actions {
    gap: 8px;
  }

  .nav-toggle__label {
    display: none;
  }

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

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

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .brand:hover .brand__mark {
    transform: none;
  }

  .btn,
  .header-cta {
    transition: none;
  }
}