:root {
  --bg: #090b10;
  --bg-soft: #0e1118;
  --panel: #121620;
  --panel-2: #171c27;
  --text: #f2f4f8;
  --muted: #9299a8;
  --muted-2: #687080;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #a7ff5a;
  --accent-dark: #82df32;
  --blue: #5c8dff;
  --red: #ff4d58;
  --max: 1280px;
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
}

body.modal-open {
  overflow: hidden;
}

button,
input {
  font: inherit;
}

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

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

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

a {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  padding: 0;
  border: 0;
  margin: -1px;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.noise {
  position: fixed;
  z-index: 30;
  inset: 0;
  pointer-events: none;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

.site-header,
main,
footer {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.site-header {
  display: grid;
  height: 96px;
  align-items: center;
  grid-template-columns: 1fr auto 1fr;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  width: max-content;
  gap: 11px;
  align-items: center;
  text-decoration: none;
}

.brand-box {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  background: var(--text);
  color: var(--bg);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.08em;
}

.brand-copy {
  display: flex;
  flex-direction: column;
}

.brand-copy strong {
  font-size: 16px;
  letter-spacing: -0.03em;
}

.brand-copy small {
  margin-top: 2px;
  color: var(--muted-2);
  font-size: 7px;
  font-weight: 760;
  letter-spacing: 0.14em;
}

nav {
  display: flex;
  gap: 38px;
}

nav a,
footer a {
  color: var(--muted);
  font-size: 12px;
  text-decoration: none;
  transition: color 150ms ease;
}

nav a:hover,
footer a:hover {
  color: var(--text);
}

.header-cta {
  display: inline-flex;
  gap: 8px;
  min-height: 42px;
  padding: 0 16px;
  align-items: center;
  justify-self: end;
  border: 1px solid var(--line-strong);
  font-size: 11px;
  font-weight: 720;
  text-decoration: none;
  transition: border-color 150ms ease, background 150ms ease;
}

.header-cta:hover {
  border-color: var(--accent);
  background: rgba(167, 255, 90, 0.07);
}

.header-cta svg,
.outline-link svg {
  width: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.hero {
  display: grid;
  min-height: 690px;
  padding: 70px 0 72px;
  align-items: center;
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 1.1fr);
  gap: 76px;
}

.live-label {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.19em;
}

.live-label span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 5px rgba(255, 77, 88, 0.13);
}

.hero-kicker {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.hero h1 {
  max-width: 640px;
  margin: 16px 0 25px;
  font-size: clamp(46px, 5.4vw, 78px);
  font-weight: 790;
  letter-spacing: -0.065em;
  line-height: 1.07;
}

.hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero-description {
  display: -webkit-box;
  max-width: 560px;
  overflow: hidden;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.hero-actions {
  display: flex;
  gap: 26px;
  margin-top: 34px;
  align-items: center;
}

.play-primary {
  display: inline-flex;
  min-height: 54px;
  padding: 0 22px 0 7px;
  cursor: pointer;
  align-items: center;
  gap: 13px;
  border: 0;
  background: var(--accent);
  color: #0b0e10;
  font-size: 12px;
  font-weight: 800;
  transition: background 150ms ease, transform 150ms ease;
}

.play-primary:hover:not(:disabled) {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.play-primary:disabled {
  cursor: wait;
  opacity: 0.55;
}

.play-disc {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 50%;
  background: #0b0e10;
  color: var(--accent);
}

.play-disc svg,
.visual-play svg,
.card-play svg {
  width: 18px;
  fill: currentColor;
}

.text-link {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
}

.text-link span {
  color: var(--accent);
}

.text-link:hover {
  color: var(--text);
}

.hero-meta {
  display: flex;
  gap: 42px;
  padding-top: 26px;
  margin-top: 33px;
  border-top: 1px solid var(--line);
}

.hero-meta div {
  display: flex;
  gap: 5px;
  flex-direction: column;
}

.hero-meta span {
  color: var(--muted-2);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.hero-meta strong {
  font-size: 11px;
  font-weight: 650;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 480px;
  padding: 0;
  cursor: pointer;
  border: 0;
  background:
    linear-gradient(130deg, #172135, #0c0f16 60%),
    var(--panel);
  color: var(--text);
  isolation: isolate;
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  z-index: 2;
  content: "";
  pointer-events: none;
}

.hero-visual::before {
  inset: 17px;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-visual::after {
  top: -30%;
  left: -50%;
  width: 70%;
  height: 160%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.13), transparent);
  transform: rotate(18deg);
  transition: left 600ms ease;
}

.hero-visual:hover::after {
  left: 100%;
}

.hero-visual:disabled {
  cursor: wait;
}

.hero-visual img {
  position: absolute;
  z-index: -2;
  width: 100%;
  height: 100%;
  inset: 0;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.01);
  transition: opacity 350ms ease, transform 700ms ease;
}

.hero-visual img.is-loaded {
  opacity: 1;
}

.hero-visual:hover img {
  transform: scale(1.045);
}

.visual-shade {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(180deg, rgba(3, 5, 8, 0.08), rgba(3, 5, 8, 0.72));
}

.visual-index,
.visual-caption {
  position: absolute;
  z-index: 3;
  bottom: 31px;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.visual-index {
  left: 33px;
}

.visual-caption {
  right: 33px;
  color: rgba(255, 255, 255, 0.68);
}

.visual-play {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 76px;
  height: 76px;
  inset: 50% auto auto 50%;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 50%;
  background: rgba(5, 7, 11, 0.43);
  color: white;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(10px);
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.hero-visual:hover .visual-play {
  background: var(--accent);
  color: #0a0d10;
  transform: translate(-50%, -50%) scale(1.08);
}

.signal-strip {
  display: flex;
  min-height: 84px;
  padding: 20px 4px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.signal-strip p {
  margin: 0;
  color: var(--muted-2);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.signal-strip p span {
  margin-right: 10px;
  color: var(--text);
  font-weight: 730;
}

.signal-dot {
  color: var(--accent);
}

.works-section,
.topics-section {
  padding: 120px 0 30px;
}

.section-head {
  display: grid;
  margin-bottom: 52px;
  align-items: end;
  grid-template-columns: 1fr 0.7fr;
  gap: 70px;
}

.section-head.compact {
  grid-template-columns: 1fr;
}

.section-number {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.section-label {
  margin: 0 0 11px;
  color: var(--muted-2);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.section-head h2,
.about-copy h2,
.subscribe-section h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 730;
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.section-intro {
  max-width: 450px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
}

.filter-bar {
  display: flex;
  min-height: 68px;
  margin-bottom: 30px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.filter-tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar {
  display: none;
}

.filter-tabs button {
  min-height: 35px;
  padding: 0 13px;
  cursor: pointer;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.filter-tabs button.is-active {
  background: var(--text);
  color: var(--bg);
  font-weight: 750;
}

.search-box {
  display: flex;
  width: 230px;
  min-height: 38px;
  padding: 0 4px 0 12px;
  align-items: center;
  border-left: 1px solid var(--line);
  color: var(--muted-2);
}

.search-box svg {
  width: 16px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.5;
}

.search-box input {
  width: 100%;
  padding: 8px 10px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 10px;
}

.search-box input::placeholder {
  color: var(--muted-2);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 42px 20px;
}

.video-card {
  min-width: 0;
}

.card-image {
  position: relative;
  display: block;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  padding: 0;
  cursor: pointer;
  border: 0;
  background: var(--panel);
  color: white;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms ease;
}

.card-image:hover img {
  transform: scale(1.045);
}

.card-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 42%, rgba(2, 4, 7, 0.66));
}

.card-play {
  position: absolute;
  display: grid;
  width: 46px;
  height: 46px;
  right: 17px;
  bottom: 16px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 50%;
  background: rgba(4, 6, 10, 0.36);
  backdrop-filter: blur(7px);
  transition: background 150ms ease, color 150ms ease;
}

.card-image:hover .card-play {
  background: var(--accent);
  color: var(--bg);
}

.card-category {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 6px 8px;
  background: rgba(5, 7, 10, 0.72);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.12em;
  backdrop-filter: blur(8px);
}

.card-body {
  padding: 19px 2px 0;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted-2);
  font-size: 8px;
  font-weight: 680;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-body h3 {
  display: -webkit-box;
  overflow: hidden;
  min-height: 52px;
  margin: 13px 0 10px;
  font-size: 17px;
  font-weight: 660;
  letter-spacing: -0.025em;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.card-body > p {
  display: -webkit-box;
  overflow: hidden;
  min-height: 44px;
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.card-link {
  display: inline-flex;
  gap: 8px;
  padding: 0 0 5px;
  cursor: pointer;
  align-items: center;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  margin-top: 18px;
  background: transparent;
  color: var(--text);
  font-size: 9px;
  font-weight: 720;
}

.card-link span {
  color: var(--accent);
}

.skeleton-card span,
.skeleton-card i {
  display: block;
  background: linear-gradient(90deg, var(--panel) 20%, var(--panel-2) 48%, var(--panel) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.4s infinite;
}

.skeleton-card span {
  aspect-ratio: 16 / 9;
}

.skeleton-card i {
  height: 13px;
  margin-top: 18px;
}

.skeleton-card i:last-child {
  width: 68%;
  margin-top: 9px;
}

@keyframes skeleton {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

.empty-state {
  padding: 70px 20px;
  border: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
}

.empty-state span {
  display: block;
  font-size: 13px;
}

.empty-state button {
  padding: 9px 14px;
  cursor: pointer;
  border: 1px solid var(--line-strong);
  margin-top: 17px;
  background: transparent;
  color: var(--text);
  font-size: 10px;
}

.load-more {
  display: flex;
  min-width: 220px;
  min-height: 50px;
  padding: 0 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line-strong);
  margin: 52px auto 0;
  background: transparent;
  color: var(--text);
  font-size: 10px;
  font-weight: 710;
}

.load-more:hover {
  border-color: var(--accent);
}

.load-more span {
  color: var(--muted-2);
}

.topics-section {
  padding-bottom: 120px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.topic-card {
  position: relative;
  display: flex;
  min-height: 310px;
  padding: 28px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  border: 0;
  background: var(--panel);
  color: var(--text);
  text-align: left;
  isolation: isolate;
  transition: transform 180ms ease;
}

.topic-card::after {
  position: absolute;
  z-index: -1;
  opacity: 0;
  content: "";
  inset: 0;
  transition: opacity 200ms ease;
}

.topic-one::after { background: linear-gradient(145deg, #24375a, #121722); }
.topic-two::after { background: linear-gradient(145deg, #32305b, #141522); }
.topic-three::after { background: linear-gradient(145deg, #274637, #121a18); }

.topic-card:hover::after {
  opacity: 1;
}

.topic-code {
  color: var(--muted-2);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  letter-spacing: 0.13em;
}

.topic-card strong {
  display: block;
  font-size: 25px;
  letter-spacing: -0.04em;
}

.topic-card p {
  max-width: 260px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.topic-count {
  position: absolute;
  top: 28px;
  right: 28px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
}

.about-section {
  display: grid;
  padding: 115px 0;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 100px;
  border-top: 1px solid var(--line);
}

.about-mark {
  position: relative;
  display: grid;
  min-height: 520px;
  overflow: hidden;
  place-items: center;
  background:
    linear-gradient(145deg, rgba(167, 255, 90, 0.07), transparent 50%),
    repeating-linear-gradient(90deg, transparent 0 49px, rgba(255, 255, 255, 0.035) 50px),
    repeating-linear-gradient(0deg, transparent 0 49px, rgba(255, 255, 255, 0.035) 50px),
    var(--panel);
}

.about-mark::before {
  position: absolute;
  width: 65%;
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  content: "";
}

.about-mark span {
  z-index: 1;
  color: var(--accent);
  font-size: clamp(90px, 14vw, 170px);
  font-weight: 900;
  letter-spacing: -0.1em;
}

.about-mark small {
  position: absolute;
  right: 25px;
  bottom: 24px;
  color: var(--muted-2);
  font-size: 10px;
  letter-spacing: 0.25em;
}

.about-copy {
  align-self: center;
}

.about-copy h2 {
  margin: 10px 0 38px;
}

.about-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.about-text p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.85;
}

.outline-link {
  display: inline-flex;
  gap: 12px;
  min-height: 46px;
  padding: 0 16px;
  align-items: center;
  border: 1px solid var(--line-strong);
  margin-top: 38px;
  font-size: 10px;
  font-weight: 720;
  text-decoration: none;
}

.outline-link:hover {
  border-color: var(--accent);
}

.subscribe-section {
  display: flex;
  min-height: 380px;
  padding: 60px 70px;
  align-items: center;
  justify-content: space-between;
  background:
    radial-gradient(circle at 80% 20%, rgba(167, 255, 90, 0.14), transparent 30%),
    var(--panel-2);
}

.subscribe-section > div > span {
  color: var(--accent);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.subscribe-section h2 {
  margin-top: 17px;
}

.subscribe-section > a {
  display: grid;
  min-width: 300px;
  min-height: 90px;
  padding: 18px;
  align-items: center;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease;
}

.subscribe-section > a:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

.youtube-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 50%;
  background: var(--red);
  color: white;
}

.youtube-icon svg {
  width: 25px;
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.youtube-icon svg path:last-child {
  fill: currentColor;
  stroke: none;
}

.subscribe-section a small,
.subscribe-section a strong {
  display: block;
}

.subscribe-section a small {
  color: #626873;
  font-size: 8px;
}

.subscribe-section a strong {
  margin-top: 4px;
  font-size: 14px;
}

.subscribe-section a b {
  font-size: 20px;
}

footer {
  display: grid;
  min-height: 130px;
  align-items: center;
  grid-template-columns: 1fr auto 1fr;
  color: var(--muted-2);
}

.footer-brand .brand-box {
  width: 35px;
  height: 35px;
  font-size: 14px;
}

footer > p {
  font-size: 8px;
  letter-spacing: 0.06em;
}

footer > div {
  display: flex;
  gap: 22px;
  justify-self: end;
}

.video-modal {
  width: min(1060px, calc(100% - 38px));
  max-width: none;
  max-height: calc(100vh - 36px);
  overflow: auto;
  padding: 0;
  border: 1px solid var(--line-strong);
  background: #0a0d12;
  color: var(--text);
}

.video-modal::backdrop {
  background: rgba(2, 3, 5, 0.88);
  backdrop-filter: blur(10px);
}

.modal-shell {
  position: relative;
}

.modal-close {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 38px;
  height: 38px;
  top: 12px;
  right: 12px;
  cursor: pointer;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  background: rgba(5, 7, 10, 0.72);
  color: white;
  font-size: 24px;
  line-height: 1;
  backdrop-filter: blur(8px);
}

.video-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.modal-caption {
  padding: 24px 28px 28px;
}

.modal-caption span {
  color: var(--accent);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.modal-caption h2 {
  margin: 9px 0 15px;
  font-size: clamp(18px, 3vw, 28px);
  letter-spacing: -0.035em;
}

.modal-caption a {
  color: var(--muted);
  font-size: 10px;
  text-decoration: none;
}

.toast {
  position: fixed;
  z-index: 50;
  right: 22px;
  bottom: 22px;
  max-width: min(380px, calc(100vw - 44px));
  padding: 13px 17px;
  border: 1px solid var(--line-strong);
  background: #171b24;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  color: var(--text);
  font-size: 11px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  nav {
    display: none;
  }

  .hero {
    padding-top: 58px;
    grid-template-columns: 1fr;
    gap: 50px;
  }

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

  .hero-visual {
    min-height: auto;
    aspect-ratio: 16 / 9;
  }

  .section-head {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .topic-card {
    min-height: 230px;
  }

  .about-section {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .about-mark {
    min-height: 430px;
  }

  .subscribe-section {
    gap: 48px;
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  .site-header,
  main,
  footer {
    width: min(calc(100% - 28px), var(--max));
  }

  .site-header {
    height: 78px;
  }

  .header-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 9px;
  }

  .header-cta svg {
    display: none;
  }

  .brand-box {
    width: 37px;
    height: 37px;
    font-size: 16px;
  }

  .brand-copy strong {
    font-size: 14px;
  }

  .hero {
    min-height: auto;
    padding: 52px 0 56px;
  }

  .hero h1 {
    font-size: 45px;
  }

  .hero-description {
    font-size: 12px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-meta {
    gap: 24px;
  }

  .hero-visual::before {
    inset: 10px;
  }

  .visual-index,
  .visual-caption {
    bottom: 20px;
  }

  .visual-index {
    left: 20px;
  }

  .visual-caption {
    right: 20px;
  }

  .visual-play {
    width: 58px;
    height: 58px;
  }

  .signal-strip {
    padding: 21px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
  }

  .signal-dot {
    display: none;
  }

  .works-section,
  .topics-section {
    padding-top: 86px;
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .filter-bar {
    padding: 12px 0;
    align-items: stretch;
    flex-direction: column;
  }

  .filter-tabs {
    padding-bottom: 10px;
  }

  .search-box {
    width: 100%;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .topic-card {
    min-height: 220px;
  }

  .about-section {
    padding: 86px 0;
  }

  .about-mark {
    min-height: 330px;
  }

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

  .subscribe-section {
    min-height: 420px;
    padding: 42px 25px;
  }

  .subscribe-section > a {
    width: 100%;
    min-width: 0;
  }

  footer {
    display: flex;
    padding: 35px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }

  footer > div {
    justify-self: auto;
  }

  .modal-caption {
    padding: 19px 18px 23px;
  }
}

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