:root {
  color-scheme: light;
  --bg: #f5f7f3;
  --surface: #ffffff;
  --surface-soft: #edf3ee;
  --ink: #182127;
  --ink-soft: #4a5660;
  --muted: #78838b;
  --line: rgba(24, 33, 39, 0.13);
  --sidebar: #101820;
  --sidebar-soft: #162331;
  --green: #2e7d64;
  --green-bright: #49b98d;
  --coral: #d9654b;
  --gold: #d89a36;
  --blue: #315f9f;
  --white: #ffffff;
  --shadow: 0 18px 52px rgba(24, 33, 39, 0.16);
  --shadow-strong: 0 26px 70px rgba(24, 33, 39, 0.22);
  --ring: 0 0 0 4px rgba(73, 185, 141, 0.18);
  --radius: 8px;
  --content: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(16, 24, 32, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(16, 24, 32, 0.035) 1px, transparent 1px),
    var(--bg);
  background-size: 48px 48px;
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 15px;
  line-height: 1.66;
  text-rendering: optimizeLegibility;
}

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

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

p {
  margin: 0;
}

.skip-link {
  position: fixed;
  left: 18px;
  top: 14px;
  z-index: 1000;
  padding: 10px 14px;
  color: var(--white);
  background: var(--sidebar);
  border-radius: var(--radius);
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.mobile-bar {
  display: none;
}

.page-shell {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr);
  min-height: 100vh;
}

.side-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  padding: 28px 22px;
  color: rgba(255, 255, 255, 0.82);
  background:
    linear-gradient(180deg, rgba(73, 185, 141, 0.09), transparent 34%),
    linear-gradient(160deg, var(--sidebar), var(--sidebar-soft));
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-mark {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.brand-mark:hover,
.brand-mark:focus-visible {
  opacity: 0.92;
  transform: translateY(-2px);
}

.brand-mark img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.brand-mark strong {
  display: block;
  color: var(--white);
  font-size: 1.08rem;
  line-height: 1.2;
}

.brand-mark small {
  display: block;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.78rem;
}

.section-nav {
  display: grid;
  align-content: start;
  gap: 7px;
  padding-top: 24px;
}

.section-nav a {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 12px 9px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.74);
  font-weight: 800;
  overflow: hidden;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.section-nav a::before {
  position: absolute;
  left: 7px;
  width: 4px;
  height: 4px;
  background: currentColor;
  border-radius: 50%;
  content: "";
}

.section-nav a::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(73, 185, 141, 0.18), transparent 58%);
  content: "";
  opacity: 0;
  transform: translateX(-28%);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
}

.section-nav a:hover,
.section-nav a.is-active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: inset 3px 0 0 var(--green-bright);
  transform: translateX(3px);
}

.section-nav a:hover::after,
.section-nav a.is-active::after {
  opacity: 1;
  transform: translateX(0);
}

.nav-foot {
  display: grid;
  gap: 7px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  transition: border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.nav-foot:hover {
  border-color: rgba(73, 185, 141, 0.42);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.18);
  transform: translateY(-2px);
}

.nav-foot p {
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.8rem;
  font-weight: 700;
}

.nav-foot strong {
  color: var(--white);
  font-size: 1.08rem;
}

.download-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: 6px;
  color: var(--sidebar);
  background: var(--green-bright);
  border-radius: var(--radius);
  font-weight: 900;
  overflow: hidden;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.download-link::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 18%, rgba(255, 255, 255, 0.55) 48%, transparent 76%);
  content: "";
  opacity: 0;
  transform: translateX(-115%);
  transition: opacity 0.22s ease, transform 0.56s ease;
}

.download-link:hover,
.download-link:focus-visible {
  background: #67d2a8;
  box-shadow: 0 12px 30px rgba(73, 185, 141, 0.28);
  transform: translateY(-2px);
}

.download-link:hover::after,
.download-link:focus-visible::after {
  opacity: 1;
  transform: translateX(115%);
}

.workspace {
  min-width: 0;
}

.dossier-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
  gap: clamp(22px, 4vw, 54px);
  align-items: end;
  min-height: 680px;
  padding: clamp(80px, 10vw, 132px) clamp(22px, 5vw, 72px) 58px;
  color: var(--white);
  overflow: hidden;
  background: var(--sidebar);
}

.hero-image,
.hero-mask {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
  transform: scale(1.04);
  transition: transform 1.4s ease, filter 1.4s ease;
}

.dossier-hero:hover .hero-image {
  filter: saturate(1.08) contrast(1.04);
  transform: scale(1.08);
}

.hero-mask {
  background:
    linear-gradient(90deg, rgba(16, 24, 32, 0.94) 0%, rgba(16, 24, 32, 0.74) 44%, rgba(16, 24, 32, 0.26) 100%),
    linear-gradient(180deg, rgba(16, 24, 32, 0.1), rgba(16, 24, 32, 0.88));
}

.hero-copy,
.status-panel {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 760px;
}

.label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--green-bright);
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: 0;
}

.label::before {
  width: 24px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: width 0.24s ease;
}

.content-section:hover .label::before,
.dossier-hero:hover .label::before {
  width: 42px;
}

.hero-copy h1 {
  margin: 0;
  color: #ffd179;
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  font-size: clamp(2.5rem, 4.8vw, 4.35rem);
  line-height: 0.95;
  font-weight: 900;
  text-shadow: 0 18px 42px rgba(0, 0, 0, 0.44);
  transition: color 0.28s ease, text-shadow 0.28s ease;
}

.dossier-hero:hover .hero-copy h1 {
  color: #ffe09b;
  text-shadow: 0 18px 48px rgba(0, 0, 0, 0.5), 0 0 24px rgba(255, 209, 121, 0.2);
}

.hero-text {
  max-width: 660px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(1rem, 1.35vw, 1.14rem);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 900;
  line-height: 1.2;
  overflow: hidden;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 18%, rgba(255, 255, 255, 0.48) 48%, transparent 76%);
  content: "";
  opacity: 0;
  transform: translateX(-115%);
  transition: opacity 0.22s ease, transform 0.56s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn:hover::after,
.btn:focus-visible::after {
  opacity: 1;
  transform: translateX(115%);
}

.btn:focus-visible,
.download-link:focus-visible,
.section-nav a:focus-visible,
.faq-list summary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.btn-primary {
  color: var(--sidebar);
  background: var(--green-bright);
  box-shadow: 0 16px 38px rgba(73, 185, 141, 0.24);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #69d6aa;
  box-shadow: 0 18px 44px rgba(73, 185, 141, 0.32);
}

.btn-ghost {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: rgba(255, 255, 255, 0.52);
  background: rgba(255, 255, 255, 0.14);
}

.status-panel {
  position: relative;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(16, 24, 32, 0.68);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease, background 0.24s ease;
}

.status-panel::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(73, 185, 141, 0.18), transparent 40%);
  content: "";
  opacity: 0;
  transition: opacity 0.24s ease;
  pointer-events: none;
}

.status-panel:hover {
  border-color: rgba(73, 185, 141, 0.48);
  background: rgba(16, 24, 32, 0.76);
  box-shadow: 0 30px 76px rgba(0, 0, 0, 0.32);
  transform: translateY(-4px);
}

.status-panel:hover::before {
  opacity: 1;
}

.status-panel > p {
  margin-bottom: 15px;
  color: #ffd179;
  font-weight: 900;
}

.status-panel dl {
  display: grid;
  gap: 1px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.status-panel div {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.08);
  transition: background 0.2s ease, transform 0.2s ease;
}

.status-panel div:hover {
  background: rgba(255, 255, 255, 0.13);
  transform: translateX(3px);
}

.status-panel dt {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.82rem;
  font-weight: 800;
}

.status-panel dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.94);
  font-weight: 800;
}

.content-section {
  padding: clamp(58px, 7vw, 92px) clamp(22px, 5vw, 72px);
}

.content-section:nth-of-type(odd) {
  background: rgba(255, 255, 255, 0.48);
}

.section-head {
  max-width: 840px;
  margin-bottom: 30px;
}

.section-head h2 {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
  font-size: clamp(1.36rem, 2.35vw, 1.9rem);
  line-height: 1.16;
  font-weight: 900;
}

.section-head p:last-child {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.brief-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(360px, 0.72fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: stretch;
}

.text-panel,
.image-panel,
.system-row,
.play-column,
.release-row,
.faq-list details {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 34px rgba(24, 33, 39, 0.07);
  transition: border-color 0.24s ease, box-shadow 0.24s ease, transform 0.24s ease, background 0.24s ease;
}

.text-panel:hover,
.fact-strip div:hover {
  border-color: rgba(46, 125, 100, 0.28);
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.text-panel {
  display: grid;
  gap: 14px;
  padding: 24px;
}

.text-panel h3,
.system-row h3,
.play-column h3,
.release-row h3 {
  margin: 0;
  color: var(--green);
  font-size: 1.1rem;
  line-height: 1.34;
}

.text-panel p,
.system-row p,
.play-column p,
.release-row p,
.faq-list p {
  color: var(--ink-soft);
}

.image-panel,
.tall-shot,
.gallery-main,
.gallery-side {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.image-panel::after,
.tall-shot::after,
.gallery-main::after,
.gallery-side::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(16, 24, 32, 0.28));
  content: "";
  opacity: 0;
  transition: opacity 0.28s ease;
  pointer-events: none;
}

.image-panel img,
.tall-shot img,
.gallery-main img,
.gallery-side img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.32s ease, filter 0.32s ease;
}

.image-panel:hover img,
.tall-shot:hover img,
.gallery-main:hover img,
.gallery-side:hover img {
  filter: saturate(1.08) contrast(1.04);
  transform: scale(1.03);
}

.image-panel:hover::after,
.tall-shot:hover::after,
.gallery-main:hover::after,
.gallery-side:hover::after {
  opacity: 1;
}

.image-panel figcaption {
  padding: 14px 16px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.88rem;
  font-weight: 700;
  transition: color 0.22s ease, background 0.22s ease;
}

.image-panel:hover figcaption {
  color: var(--ink);
  background: #f9fbf7;
}

.fact-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.fact-strip div {
  padding: 18px;
  background: var(--surface);
  transition: background 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.fact-strip span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

.fact-strip strong {
  display: block;
  margin-top: 5px;
  color: var(--ink);
}

.systems-section {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.48);
}

.systems-section .section-head h2,
.systems-section .text-panel h3,
.systems-section .system-row h3 {
  color: var(--ink);
}

.systems-section .section-head p:last-child,
.systems-section .system-row p {
  color: var(--ink);
}

.systems-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.62fr);
  gap: clamp(22px, 4vw, 46px);
  align-items: start;
}

.system-list {
  display: grid;
  gap: 12px;
}

.system-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 12px 34px rgba(24, 33, 39, 0.07);
}

.system-row:hover {
  border-color: rgba(46, 125, 100, 0.32);
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateX(4px);
}

.system-row span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--sidebar);
  background: var(--green-bright);
  border-radius: 50%;
  font-weight: 900;
  transition: background 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.system-row:hover span {
  background: #67d2a8;
  box-shadow: 0 10px 26px rgba(73, 185, 141, 0.3);
  transform: scale(1.08);
}

.system-row h3,
.play-column h3,
.release-row h3 {
  margin-bottom: 7px;
}

.tall-shot {
  position: sticky;
  top: 30px;
  aspect-ratio: 4 / 5;
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.24);
}

.playbook-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.play-column {
  overflow: hidden;
  min-height: 230px;
  padding: 20px;
  border-top: 5px solid var(--green);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.play-column::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(73, 185, 141, 0.12), transparent 48%);
  content: "";
  opacity: 0;
  transition: opacity 0.22s ease;
  pointer-events: none;
}

.play-column:nth-child(2n) {
  border-top-color: var(--coral);
}

.play-column:nth-child(3n) {
  border-top-color: var(--blue);
}

.play-column:hover {
  border-color: rgba(46, 125, 100, 0.28);
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.play-column:hover::before {
  opacity: 1;
}

.play-column span {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  transition: color 0.22s ease;
}

.play-column:hover span {
  color: var(--green);
}

.gallery-section {
  background: var(--surface-soft);
}

.gallery-mosaic {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.58fr);
  grid-template-rows: repeat(2, minmax(190px, 1fr));
  gap: 14px;
}

.gallery-main {
  grid-row: 1 / span 2;
}

.gallery-main,
.gallery-side {
  background: var(--surface);
  box-shadow: var(--shadow);
  transition: box-shadow 0.24s ease, transform 0.24s ease;
}

.gallery-main:hover,
.gallery-side:hover {
  box-shadow: var(--shadow-strong);
  transform: translateY(-4px);
}

.versions-section {
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(216, 154, 54, 0.12), transparent 32%),
    linear-gradient(180deg, #151a20, #1d2832);
}

.versions-section .section-head h2 {
  color: #ffd179;
}

.versions-section .section-head p:last-child {
  color: rgba(255, 255, 255, 0.76);
}

.release-ledger {
  display: grid;
  gap: 12px;
}

.release-row {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
  border-color: rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: none;
  transition: border-color 0.24s ease, background 0.24s ease, transform 0.24s ease, box-shadow 0.24s ease;
}

.release-row:hover {
  border-color: rgba(73, 185, 141, 0.42);
  background: rgba(255, 255, 255, 0.11);
  box-shadow: 0 20px 52px rgba(0, 0, 0, 0.24);
  transform: translateX(5px);
}

.release-row time {
  color: var(--green-bright);
  font-weight: 900;
  transition: color 0.22s ease;
}

.release-row:hover time {
  color: #7ee1b7;
}

.release-row h3 {
  color: #ffd179;
}

.release-row p {
  color: rgba(255, 255, 255, 0.74);
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.faq-list details {
  overflow: hidden;
}

.faq-list details:hover {
  border-color: rgba(46, 125, 100, 0.3);
  background: var(--white);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.faq-list summary {
  position: relative;
  cursor: pointer;
  padding: 17px 52px 17px 18px;
  font-weight: 900;
  list-style: none;
  transition: color 0.22s ease, background 0.22s ease;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  right: 18px;
  top: 17px;
  color: var(--green);
  content: "+";
  font-size: 1.3rem;
  line-height: 1;
  transition: color 0.22s ease, transform 0.22s ease;
}

.faq-list details[open] summary::after {
  content: "-";
  transform: rotate(180deg);
}

.faq-list details:hover summary {
  color: var(--green);
  background: rgba(46, 125, 100, 0.05);
}

.faq-list details[open] summary {
  color: var(--green);
  background: rgba(46, 125, 100, 0.07);
}

.faq-list p {
  padding: 0 18px 18px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 30px clamp(22px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.78);
  background: #0f151c;
}

.site-footer strong {
  color: var(--white);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-weight: 800;
}

.site-footer a:hover {
  color: var(--green-bright);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.nav-backdrop {
  display: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1080px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .mobile-bar {
    position: sticky;
    top: 0;
    z-index: 120;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 66px;
    padding: 10px 18px;
    color: var(--white);
    background: rgba(16, 24, 32, 0.96);
    box-shadow: 0 14px 38px rgba(16, 24, 32, 0.2);
  }

  .mobile-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 900;
  }

  .mobile-brand img {
    width: 40px;
    height: 40px;
    object-fit: contain;
  }

  .menu-toggle {
    position: relative;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.24);
    border-radius: var(--radius);
    color: var(--white);
    background: rgba(255, 255, 255, 0.08);
  }

  .menu-toggle span {
    position: absolute;
    left: 11px;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    transition: top 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
  }

  .menu-toggle span:nth-child(1) {
    top: 14px;
  }

  .menu-toggle span:nth-child(2) {
    top: 21px;
  }

  .menu-toggle span:nth-child(3) {
    top: 28px;
  }

  .menu-toggle.is-open span:nth-child(1) {
    top: 21px;
    transform: rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-open span:nth-child(3) {
    top: 21px;
    transform: rotate(-45deg);
  }

  .side-nav {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(310px, calc(100vw - 46px));
    height: 100vh;
    transform: translateX(-105%);
    transition: transform 0.24s ease;
  }

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

  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: block;
    pointer-events: none;
    background: rgba(16, 24, 32, 0);
    transition: background 0.24s ease;
  }

  .nav-backdrop.is-open {
    pointer-events: auto;
    background: rgba(16, 24, 32, 0.48);
  }

  .dossier-hero {
    grid-template-columns: 1fr;
    min-height: 640px;
    padding-top: 86px;
  }

  .status-panel {
    max-width: 620px;
  }

  .brief-grid,
  .systems-layout {
    grid-template-columns: 1fr;
  }

  .tall-shot {
    position: static;
    aspect-ratio: 16 / 9;
  }

  .playbook-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  body {
    font-size: 14px;
  }

  .dossier-hero {
    min-height: 0;
    padding: 70px 18px 34px;
  }

  .hero-mask {
    background:
      linear-gradient(90deg, rgba(16, 24, 32, 0.92), rgba(16, 24, 32, 0.54)),
      linear-gradient(180deg, rgba(16, 24, 32, 0.12), rgba(16, 24, 32, 0.9));
  }

  .hero-copy h1 {
    font-size: clamp(2.08rem, 11vw, 2.9rem);
  }

  .action-row {
    display: grid;
  }

  .btn {
    width: 100%;
  }

  .status-panel {
    padding: 18px;
  }

  .status-panel div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .content-section {
    padding: 48px 18px;
  }

  .fact-strip,
  .playbook-board,
  .gallery-mosaic,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .gallery-mosaic {
    grid-template-rows: auto;
  }

  .gallery-main {
    grid-row: auto;
  }

  .gallery-main img,
  .gallery-side img {
    aspect-ratio: 16 / 9;
  }

  .release-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .site-footer {
    display: grid;
    align-items: start;
  }
}