@layer reset, tokens, base, layout, components, motion, responsive;

@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  html { min-height: 100%; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  body, h1, h2, h3, p { margin: 0; }
  img, video, iframe { display: block; max-width: 100%; }
  img { height: auto; }
}

@layer tokens {
  :root {
    --color-ink: #171714;
    --color-paper: #f3f0e8;
    --color-gold: #bca77b;
    --color-muted: #77736b;
    --color-line: rgb(23 23 20 / 18%);
    --color-dark: #151513;
    --font-display: Georgia, "Times New Roman", serif;
    --font-display-zh: "Songti SC", STSong, SimSun, serif;
    --font-ui: Arial, Helvetica, sans-serif;
    --page-gutter: clamp(1.25rem, 5vw, 8rem);
    --section-space: clamp(4.5rem, 9vw, 10rem);
    --content-max: 120rem;
    --tap-size: 2.75rem;
  }
}

@layer base {
  html { background: var(--color-dark); }
  body {
    min-width: 20rem;
    min-height: 100%;
    overflow-x: hidden;
    background: var(--color-paper);
    color: var(--color-ink);
    font-family: var(--font-ui);
  }
  a { color: inherit; overflow-wrap: anywhere; }
  a:focus-visible, iframe:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 4px;
  }
  ::selection { background: var(--color-gold); color: var(--color-ink); }
  .skip-link {
    position: fixed;
    z-index: 100;
    top: 0;
    left: 1rem;
    transform: translateY(-120%);
    padding: .75rem 1rem;
    background: var(--color-paper);
    color: var(--color-ink);
    text-decoration: none;
  }
  .skip-link:focus { transform: translateY(0); }
}

@layer layout {
  .nav, .hero-content, .statement, .credentials, .performances, .archive {
    width: min(100%, var(--content-max));
    margin-inline: auto;
  }
  .nav {
    position: absolute;
    z-index: 3;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: max(2rem, env(safe-area-inset-top)) max(var(--page-gutter), env(safe-area-inset-right)) 2rem max(var(--page-gutter), env(safe-area-inset-left));
    color: #fff;
  }
  .nav-dark { position: relative; left: auto; transform: none; color: var(--color-ink); border-bottom: 1px solid var(--color-line); }
  .hero { position: relative; display: grid; min-height: 100svh; align-items: end; overflow: hidden; background: var(--color-dark); }
  .hero-content { position: relative; z-index: 1; padding: 10rem var(--page-gutter) max(4rem, env(safe-area-inset-bottom)); color: #fff; }
  .statement, .credentials {
    display: grid;
    grid-template-columns: minmax(8rem, 1fr) minmax(0, 2.2fr);
    gap: clamp(2rem, 7vw, 8rem);
    padding: var(--section-space) var(--page-gutter);
    border-bottom: 1px solid var(--color-line);
  }
  .performances, .archive { padding: var(--section-space) var(--page-gutter); }
  .section-head { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
  .video-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(2.5rem, 5vw, 5rem) clamp(1rem, 3vw, 2.5rem); }
  footer {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: end;
    gap: 2rem;
    padding: 4rem max(var(--page-gutter), env(safe-area-inset-right)) max(4rem, env(safe-area-inset-bottom)) max(var(--page-gutter), env(safe-area-inset-left));
    background: var(--color-ink);
    color: #fff;
  }
}

@layer components {
  .brand { white-space: nowrap; font: 400 1.15rem/1 var(--font-display); letter-spacing: .04em; text-decoration: none; }
  .nav-links, .footer-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2rem); }
  .nav-links a, .footer-nav a {
    display: inline-flex;
    min-height: var(--tap-size);
    align-items: center;
    font-size: .7rem;
    letter-spacing: .16em;
    text-decoration: none;
    text-transform: uppercase;
  }
  .nav-links a:hover, .footer-nav a:hover, .channel-link:hover { opacity: .66; }
  .language { opacity: .72; }
  .hero-poster {
    position: absolute;
    z-index: 0;
    inset: -2%;
    width: 104%;
    height: 104%;
    max-width: none;
    object-fit: cover;
    object-position: 50% 50%;
  }
  .hero::after {
    content: "";
    position: absolute;
    z-index: 0;
    inset: 0;
    background: linear-gradient(to top right, rgb(10 10 9 / 56%) 0%, rgb(10 10 9 / 16%) 34%, transparent 62%);
    pointer-events: none;
  }
  .kicker { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.5rem; font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; }
  .kicker::before { content: ""; flex: 0 0 2.5rem; height: 1px; background: var(--color-gold); }
  h1 { max-width: 9ch; font: 400 clamp(3.5rem, 11vw, 10.5rem)/.84 var(--font-display); letter-spacing: -.065em; overflow-wrap: normal; }
  .hero-sub { display: flex; max-width: 58rem; align-items: end; justify-content: space-between; gap: 2rem; margin-top: 3rem; }
  .hero-sub p { max-width: 28rem; color: rgb(255 255 255 / 75%); font: 400 clamp(1rem, 1.7vw, 1.3rem)/1.6 var(--font-display); }
  .watch {
    display: inline-flex;
    min-height: var(--tap-size);
    align-items: center;
    justify-content: center;
    padding: .9rem 1.2rem;
    border: 1px solid rgb(255 255 255 / 40%);
    border-radius: 999px;
    color: #fff;
    font-size: .72rem;
    letter-spacing: .12em;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
  }
  .watch:hover { border-color: rgb(255 255 255 / 82%); background: rgb(255 255 255 / 8%); }
  .section-label { color: var(--color-muted); font-size: .65rem; letter-spacing: .2em; line-height: 1.5; text-transform: uppercase; }
  .statement h2 { max-width: 18ch; font: 400 clamp(2.4rem, 5vw, 5.6rem)/1.02 var(--font-display); letter-spacing: -.045em; }
  .statement h2 em { color: var(--color-gold); font-weight: 400; }
  .profile-copy { max-width: 46rem; margin-top: 2rem; color: var(--color-muted); font: 400 clamp(1rem, 1.3vw, 1.1rem)/1.8 var(--font-display); }
  .profile-copy strong { color: var(--color-ink); font-weight: 600; }
  .facts h2 { margin-bottom: 2.5rem; font: 400 clamp(2.2rem, 4vw, 4.5rem)/1.04 var(--font-display); letter-spacing: -.04em; }
  .facts ul { margin: 0; padding: 0; list-style: none; }
  .facts li { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.5rem; padding: 1.2rem 0; border-top: 1px solid var(--color-line); }
  .facts strong { font: 400 1.08rem/1.4 var(--font-display); overflow-wrap: anywhere; }
  .facts span { color: var(--color-muted); font-size: .85rem; line-height: 1.6; overflow-wrap: anywhere; }
  .section-head h2 { margin-top: .7rem; font: 400 clamp(3rem, 6vw, 6rem)/.9 var(--font-display); letter-spacing: -.05em; }
  .channel-link { display: inline-flex; min-height: var(--tap-size); align-items: center; font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; text-underline-offset: .35rem; }
  .archive-head { padding: 3rem 0 clamp(4rem, 7vw, 7rem); }
  .archive-head h1 { max-width: none; margin: .8rem 0 1.2rem; font-size: clamp(3.5rem, 10vw, 9rem); }
  .archive-head p { max-width: 50rem; color: var(--color-muted); font: 1.2rem/1.6 var(--font-display); }
  .video-frame { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: #181815; }
  iframe, .video-frame video { width: 100%; height: 100%; border: 0; }
  .video-frame video { object-fit: contain; background: #000; }
  .video-meta { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; margin-top: 1rem; padding-top: 1.2rem; border-top: 1px solid var(--color-line); }
  .video-meta h3 { font: 400 clamp(1.2rem, 2vw, 1.7rem)/1.25 var(--font-display); overflow-wrap: anywhere; }
  .video-meta span { color: var(--color-muted); font-size: .65rem; letter-spacing: .12em; text-transform: uppercase; white-space: nowrap; }
  .footer-name { margin-bottom: 1.6rem; font: 400 clamp(2rem, 4vw, 4.5rem)/1 var(--font-display); }
  .footer-small { color: rgb(255 255 255 / 55%); font-size: .68rem; line-height: 1.8; letter-spacing: .1em; text-transform: uppercase; }
  .footer-nav { align-self: end; }
  html:lang(zh-CN) h1,
  html:lang(zh-CN) h2,
  html:lang(zh-CN) .footer-name { font-family: var(--font-display-zh); }
}

@layer motion {
  @keyframes hero-drift {
    from { transform: scale(1.02) translate3d(-.4%, 0, 0); }
    to { transform: scale(1.07) translate3d(.5%, -.4%, 0); }
  }
  @media (prefers-reduced-motion: no-preference) {
    .hero-poster { animation: hero-drift 24s ease-in-out infinite alternate; }
    .motion-ready .reveal {
      opacity: 0;
      transform: translateY(1.1rem);
      transition: opacity .7s cubic-bezier(.22, 1, .36, 1), transform .8s cubic-bezier(.22, 1, .36, 1);
    }
    .motion-ready .reveal.is-visible { opacity: 1; transform: none; }
  }
}

@layer responsive {
  @media (min-width: 120rem) {
    :root { --page-gutter: 8rem; }
    .hero-content { padding-bottom: 9rem; }
  }
  @media (max-width: 64rem) {
    .statement, .credentials { grid-template-columns: minmax(7rem, .65fr) minmax(0, 2fr); }
    .video-grid { gap-block: 3.5rem; }
  }
  @media (max-width: 48rem) {
    :root { --section-space: clamp(4rem, 15vw, 6rem); }
    .nav-links a:first-child, .nav-links a:nth-child(3) { display: none; }
    .hero { min-height: min(100svh, 62rem); }
    .hero::after { background: linear-gradient(to top right, rgb(10 10 9 / 30%) 0%, transparent 52%); }
    .hero-poster { object-position: 67% 50%; }
    .hero-content { padding-top: 8rem; }
    .hero-sub, .section-head, footer { align-items: flex-start; flex-direction: column; }
    .statement, .credentials { grid-template-columns: 1fr; }
    .video-grid { grid-template-columns: 1fr; }
    .facts li { grid-template-columns: 1fr; gap: .4rem; }
    .footer-nav {
      width: 100%;
      align-self: flex-start;
      justify-content: space-between;
      gap: .3rem;
    }
    .footer-nav a {
      flex: 0 0 auto;
      overflow-wrap: normal;
      font-size: .62rem;
      letter-spacing: .04em;
      white-space: nowrap;
    }
    h1 { font-size: clamp(3.6rem, 20vw, 7rem); }
  }
  @media (max-width: 30rem) {
    :root { --page-gutter: 1rem; }
    .nav { gap: .75rem; }
    .brand { font-size: 1rem; }
    .nav-links { gap: .7rem; }
    .nav-links a { font-size: .62rem; letter-spacing: .11em; }
    .footer-nav a { font-size: .6rem; letter-spacing: .025em; }
    .archive-head h1 { font-size: clamp(3rem, 16vw, 5rem); }
    .video-meta { grid-template-columns: 1fr; gap: .45rem; }
    .video-meta span { white-space: normal; }
  }
  @media (max-height: 32rem) and (orientation: landscape) {
    .hero { min-height: 36rem; }
    .hero-content { padding-top: 8rem; padding-bottom: 3rem; }
  }
  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  }
  @media print {
    .nav, .watch, .footer-nav { display: none !important; }
    body { background: #fff; }
    .hero { min-height: 35rem; }
  }
}