:root {
  --ink: #262626;
  --paper: #ffffff;
  --surface: #f4f4f2;
  --muted: #686868;
  --brand: #ff4209;
  --brand-text: #c53300;
  --line: #dededb;
  --sans: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; width: 100%; }
::selection { background: var(--brand); color: #fff; }
:focus-visible { outline: 3px solid var(--brand-text); outline-offset: 6px; }
.page-width { max-width: 1440px; width: calc(100% - 112px); margin-inline: auto; }
.site-header { min-height: 116px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); gap: 30px; }
.wordmark { display: inline-flex; align-items: center; gap: 10px; font-size: 23px; font-weight: 900; letter-spacing: -1px; white-space: nowrap; }
.brand-logo { width: 66px; height: 66px; object-fit: contain; flex: none; }
.site-header nav { display: flex; gap: 36px; align-items: center; font-size: 12px; letter-spacing: 1px; }
.site-header nav a:hover { color: var(--brand-text); }
.nav-external { border-bottom: 1px solid var(--ink); padding: 9px 0; }
.nav-external span { margin-left: 18px; }
.skip-link { position: fixed; left: 16px; top: -100px; z-index: 20; background: var(--ink); color: #fff; padding: 15px; }
.skip-link:focus { top: 16px; }
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; padding-block: 76px 88px; align-items: center; }
.eyebrow { font-size: 10px; line-height: 1.6; font-weight: 700; letter-spacing: 1.8px; margin: 0; }
.hero-copy > .eyebrow { display: flex; align-items: center; gap: 10px; font-size: 9px; letter-spacing: 1.5px; white-space: nowrap; }
.status-dot { width: 7px; height: 7px; flex: none; background: var(--brand); }
h1 { font-size: clamp(42px, 4.25vw, 68px); font-weight: 800; line-height: 1.4; letter-spacing: -2.5px; margin: 28px 0 40px; white-space: nowrap; }
.outlined-word { color: var(--brand-text); }
.hero-bottom { display: flex; align-items: center; justify-content: space-between; gap: 12px; max-width: 395px; }
.hero-bottom p { font-size: 11px; letter-spacing: 2px; color: var(--muted); }
.round-link { width: 47px; height: 47px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; font-size: 23px; transition: background .2s, color .2s; }
.round-link:hover { background: var(--ink); color: #fff; }
.hero-art { min-width: 0; border-top: 3px solid var(--brand); padding-top: 13px; }
.frame-topline, .frame-bottomline { display: flex; align-items: center; justify-content: space-between; font-size: 8px; letter-spacing: 1.5px; gap: 12px; }
.frame-topline { padding-bottom: 13px; }
.frame-bottomline { padding-top: 14px; color: var(--muted); letter-spacing: 1px; }
.frame-bottomline > span:last-child { color: var(--brand-text); font-weight: 800; }
.featured-video { width: 100%; aspect-ratio: 1.24; background: #262626; border: 0; padding: 0; position: relative; overflow: hidden; text-align: left; color: #fff; }
.featured-video img { height: 100%; object-fit: contain; transition: filter .4s; }
.featured-video:hover img { filter: brightness(.92); }
.featured-shade { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,.88), transparent 60%); }
.play-icon { position: absolute; top: 43%; left: 50%; transform: translate(-50%,-50%); width: 62px; height: 62px; display: grid; place-items: center; border: 1px solid #ffffffb3; border-radius: 50%; background: #0003; padding-left: 3px; font-size: 16px; }
.featured-caption { position: absolute; bottom: 29px; left: 26px; right: 55px; display: grid; gap: 13px; }
.featured-caption > .eyebrow { color: #fff; font-size: 8px; border-left: 3px solid var(--brand); padding-left: 9px; }
.featured-caption > span:last-child { font-size: 18px; font-weight: 500; line-height: 1.5; }
.featured-arrow { position: absolute; bottom: 29px; right: 23px; color: #fff; font-size: 27px; }
.cover-placeholder { aspect-ratio: 1.24; border: 1px solid var(--line); display: flex; flex-direction: column; align-items: center; justify-content: center; background: var(--surface); gap: 25px; }
.cover-placeholder > span:first-child { font-size: clamp(60px, 8vw, 120px); font-weight: 900; letter-spacing: -8px; color: #818181; }
.cover-placeholder > span:last-child { font-size: 8px; letter-spacing: 3px; color: var(--muted); }
.work-section { background: var(--surface); padding-block: 78px 66px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 42px; }
.section-heading .eyebrow { color: var(--muted); }
.section-heading h2 { font-size: clamp(30px, 3.1vw, 47px); font-weight: 800; letter-spacing: -1.5px; margin: 18px 0 0; line-height: 1.35; }
.section-heading h2 span { color: var(--brand-text); }
.section-note { font-size: 11px; line-height: 1.9; color: var(--muted); letter-spacing: 1px; margin-bottom: 3px; }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 34px 24px; }
.video-card { min-width: 0; }
.video-cover { position: relative; display: block; width: 100%; aspect-ratio: 16/9; overflow: hidden; border: 0; padding: 0; background: #dededb; color: #fff; }
.video-cover img { height: 100%; object-fit: contain; transition: filter .4s; }
.video-cover:hover img { filter: brightness(.8); }
.card-play { position: absolute; right: 12px; bottom: 12px; width: 32px; height: 32px; background: var(--brand); color: var(--ink); display: grid; place-items: center; border-radius: 50%; font-size: 10px; padding-left: 2px; }
.video-meta { display: flex; align-items: baseline; gap: 13px; padding-top: 15px; }
.video-number { font-family: monospace; font-size: 9px; color: var(--muted); flex: none; }
.video-title { font-size: 13px; font-weight: 500; line-height: 1.75; margin: 0; }
.video-category { font-size: 9px; letter-spacing: 1px; color: var(--muted); margin: 8px 0 0 27px; }
.image-missing { background: #818181; }
.image-missing:before { content: 'CGPB CLASS'; position: absolute; inset: 0; display: grid; place-items: center; color: #fff; font-size: 19px; font-weight: 800; letter-spacing: 1px; }
.image-missing img { visibility: hidden; }
.text-link { display: inline-flex; align-items: center; gap: 28px; font-size: 11px; padding-bottom: 10px; border-bottom: 1px solid currentColor; letter-spacing: 1px; }
.text-link > span { font-size: 19px; line-height: 1; }
.text-link:hover { color: var(--brand-text); }
.work-more { margin-top: 45px; }
.content-status { font-size: 13px; line-height: 1.8; padding: 25px 0; color: var(--muted); }
.about-section { display: grid; grid-template-columns: 1fr 1.1fr; gap: 100px; padding-block: 100px; }
.about-label > .eyebrow { color: var(--muted); }
.about-logo { width: 260px; height: 260px; object-fit: contain; margin-top: 38px; }
.about-copy > .eyebrow { color: var(--brand-text); }
.about-copy h2 { font-size: clamp(34px, 3.7vw, 54px); font-weight: 800; line-height: 1.4; letter-spacing: -1.5px; margin: 22px 0 30px; }
.profile-name { font-size: 13px; letter-spacing: 1px; margin-bottom: 13px; }
.profile-bio { font-size: 13px; line-height: 2; color: var(--muted); max-width: 400px; margin: 0 0 30px; white-space: pre-line; overflow-wrap: anywhere; }
.bili-cta { background: var(--brand); color: var(--ink); padding-block: 60px 65px; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.bili-cta h2 { font-size: clamp(38px, 4.6vw, 68px); line-height: 1.3; letter-spacing: -2px; font-weight: 800; margin: 24px 0 0; }
.cta-arrow { width: 118px; height: 118px; border: 1px solid var(--ink); border-radius: 50%; display: grid; place-items: center; font-size: 65px; transition: background .2s, color .2s; }
.cta-arrow:hover { background: var(--ink); color: #fff; }
.bili-cta a:focus-visible { outline-color: var(--ink); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding-block: 30px; }
.site-footer .wordmark { font-size: 18px; }
.site-footer .brand-logo { width: 48px; height: 48px; }
.site-footer > span { font-size: 10px; letter-spacing: 2px; color: var(--muted); }
.site-footer > a:last-child { font-size: 10px; }
.video-dialog { border: 1px solid var(--line); background: var(--paper); color: var(--ink); padding: 24px; max-width: 1000px; width: calc(100% - 48px); max-height: 90dvh; overflow: auto; }
.video-dialog::backdrop { background: #171717e8; backdrop-filter: blur(8px); }
.dialog-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 25px; margin-bottom: 20px; }
.dialog-header h2 { font-size: 16px; line-height: 1.6; font-weight: 500; margin: 0; }
.dialog-close { white-space: nowrap; border: 0; background: transparent; color: var(--ink); padding: 3px 0 6px 10px; font-size: 11px; display: flex; align-items: center; gap: 13px; }
.dialog-close span { font-size: 25px; line-height: 16px; }
.player-container { aspect-ratio: 16/9; background: #161616; }
.player-container iframe { display: block; border: 0; width: 100%; height: 100%; }
.player-fallback { display: flex; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--muted); line-height: 1.7; margin: 20px 0 0; }
.player-fallback a { color: var(--brand-text); text-decoration: underline; text-underline-offset: 4px; }
[hidden] { display: none !important; }
@media (min-width: 1600px) {
  .hero { gap: 85px; padding-block: 100px; }
  .hero-art { max-width: 620px; }
}
@media (max-width: 1000px) {
  .page-width { width: calc(100% - 64px); }
  .site-header { min-height: 96px; }
  .site-header nav { gap: 22px; }
  .hero { gap: 32px; padding-block: 65px; }
  h1 { font-size: 43px; letter-spacing: -2px; }
  .hero-copy > .eyebrow { font-size: 7px; letter-spacing: .7px; }
  .hero-bottom p { font-size: 9px; letter-spacing: 1px; }
  .featured-caption { left: 20px; bottom: 22px; }
  .featured-caption > span:last-child { font-size: 14px; }
  .featured-arrow { bottom: 23px; }
  .video-grid { gap: 30px 18px; }
  .about-section { gap: 50px; }
  .video-title { font-size: 12px; }
  .section-note { font-size: 10px; }
}
@media (max-width: 720px) {
  .page-width { width: calc(100% - 40px); }
  .site-header { min-height: 86px; gap: 12px; }
  .wordmark { font-size: 17px; gap: 3px; letter-spacing: -.6px; }
  .brand-logo { width: 48px; height: 48px; }
  .site-header nav { gap: 19px; font-size: 10px; letter-spacing: 0; }
  .site-header nav > a:nth-child(2) { display: none; }
  .nav-external span { margin-left: 6px; }
  .hero { grid-template-columns: 1fr; gap: 46px; padding-block: 50px 48px; }
  .hero-copy > .eyebrow { font-size: 8px; letter-spacing: 1.3px; }
  h1 { font-size: clamp(36px, 9.5vw, 63px); letter-spacing: -2px; line-height: 1.4; margin: 23px 0 27px; }
  .hero-bottom { max-width: none; }
  .hero-bottom p { font-size: 10px; letter-spacing: 1px; }
  .round-link { width: 40px; height: 40px; font-size: 20px; }
  .featured-video, .cover-placeholder { aspect-ratio: 1.35; }
  .featured-caption { left: 23px; bottom: 23px; }
  .featured-caption > span:last-child { font-size: 17px; }
  .play-icon { width: 54px; height: 54px; }
  .cover-placeholder > span:first-child { font-size: 90px; }
  .work-section { padding-block: 48px; }
  .section-heading { margin-bottom: 28px; align-items: flex-start; gap: 20px; }
  .section-heading .eyebrow { font-size: 8px; letter-spacing: 1.5px; }
  .section-heading h2 { font-size: 31px; margin-top: 15px; }
  .section-note { font-size: 9px; max-width: 110px; line-height: 1.8; margin-top: 31px; }
  .video-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 27px 14px; }
  .video-meta { gap: 8px; padding-top: 11px; }
  .video-number { font-size: 8px; }
  .video-title { font-size: 11px; line-height: 1.7; }
  .video-category { font-size: 8px; margin-left: 22px; }
  .card-play { width: 27px; height: 27px; right: 8px; bottom: 8px; font-size: 8px; }
  .work-more { margin-top: 34px; font-size: 10px; }
  .about-section { grid-template-columns: 1fr; gap: 28px; padding-block: 56px 60px; }
  .about-label { display: flex; justify-content: space-between; align-items: center; }
  .about-label > .eyebrow { font-size: 8px; }
  .about-logo { width: 85px; height: 85px; margin: 0; }
  .about-copy > .eyebrow { display: none; }
  .about-copy h2 { font-size: 40px; margin: 0 0 26px; }
  .profile-name { font-size: 12px; }
  .profile-bio { font-size: 12px; max-width: 450px; }
  .about-copy > .text-link { font-size: 10px; }
  .bili-cta { padding-block: 44px; }
  .cta-inner { gap: 20px; }
  .bili-cta .eyebrow { font-size: 8px; }
  .bili-cta h2 { font-size: 37px; letter-spacing: -1px; margin-top: 19px; }
  .cta-arrow { width: 76px; height: 76px; font-size: 44px; flex: none; }
  .site-footer { padding-block: 24px; flex-wrap: wrap; gap: 14px; }
  .site-footer .wordmark { font-size: 17px; }
  .site-footer .brand-logo { width: 40px; height: 40px; }
  .site-footer > span { font-size: 8px; letter-spacing: 1px; margin-left: auto; }
  .site-footer > a:last-child { font-size: 9px; width: 100%; text-align: right; }
  .video-dialog { padding: 17px; width: calc(100% - 24px); }
  .dialog-header { gap: 15px; margin-bottom: 16px; }
  .dialog-header h2 { font-size: 13px; }
  .dialog-close { font-size: 10px; }
  .player-fallback { font-size: 10px; margin-top: 16px; }
}
@media (max-width: 370px) {
  .site-header nav { gap: 12px; }
  .site-header nav > a:first-child { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { transition: none !important; animation: none !important; }
}