:root {
  --bg: #090b0a;
  --bg-soft: #111412;
  --panel: #151916;
  --panel-light: #1c211d;
  --text: #f2f0e8;
  --muted: #929a93;
  --line: rgba(255,255,255,.11);
  --accent: #c9ff55;
  --accent-dark: #86b52e;
  --danger: #ff6b64;
  --radius: 22px;
  --max: 1360px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.site-header {
  width: min(calc(100% - 64px), var(--max));
  height: 92px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  z-index: 20;
}
.brand { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  border: 1px solid rgba(201,255,85,.6);
  color: var(--accent); font: 600 18px/1 Georgia, serif;
}
.brand > span:last-child { display: flex; flex-direction: column; line-height: 1; gap: 5px; }
.brand b { font-size: 17px; letter-spacing: .24em; }
.brand small { font-size: 8px; letter-spacing: .38em; color: var(--muted); }
.desktop-nav { display: flex; align-items: center; gap: 34px; margin-left: auto; }
.desktop-nav a { color: #a5aba6; font-size: 14px; position: relative; transition: color .2s; }
.desktop-nav a:hover, .desktop-nav a.active { color: var(--text); }
.desktop-nav a.active::after {
  content: ""; position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent); left: 50%; bottom: -13px;
}
.header-search {
  width: 230px; height: 42px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; transition: border-color .2s;
}
.header-search:focus-within { border-color: var(--accent); }
.header-search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 13px; }
.header-search input::placeholder { color: #656b66; }
.header-search button { border: 0; background: transparent; font-size: 23px; cursor: pointer; color: #aab0ab; }
.menu-toggle { display: none; width: 42px; height: 42px; background: transparent; border: 1px solid var(--line); border-radius: 50%; }
.menu-toggle i { display: block; width: 17px; height: 1px; background: var(--text); margin: 5px auto; }
.mobile-nav { display: none; }

.hero {
  width: min(calc(100% - 64px), var(--max));
  height: min(760px, calc(100vh - 118px));
  min-height: 610px;
  margin: 0 auto 96px;
  border-radius: 4px 4px 32px 32px;
  overflow: hidden;
  position: relative;
  background: #111411;
  isolation: isolate;
}
.hero-backdrop {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 70% 40%, #48534a, #111512 70%);
  background-size: cover; background-position: center;
  transform: scale(1.015);
}
.hero-backdrop::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(3,5,4,.96) 0%, rgba(4,6,5,.73) 38%, rgba(4,6,5,.1) 72%),
              linear-gradient(0deg, rgba(3,5,4,.65), transparent 50%);
}
.hero-content {
  position: absolute; z-index: 2; left: clamp(32px, 7vw, 104px); top: 50%; transform: translateY(-50%);
  width: min(630px, 52%);
}
.eyebrow, .section-kicker {
  margin: 0 0 24px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .24em;
}
.eyebrow span { display: inline-block; width: 24px; height: 1px; background: currentColor; vertical-align: middle; margin-right: 10px; }
.hero h1 {
  font-size: clamp(48px, 6vw, 86px); line-height: 1.05; letter-spacing: -.05em;
  margin: 0 0 28px; max-width: 760px; font-weight: 650;
}
.hero h1 em, .manifesto h2 em { color: var(--accent); font-style: normal; font-family: Georgia, "Noto Serif SC", serif; font-weight: 400; }
.hero-description { max-width: 560px; margin: 0 0 24px; color: #bcc2bd; font-size: 16px; line-height: 1.85; }
.hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 0; margin: 0 0 34px; color: #878f89; font-size: 12px; }
.hero-meta span + span::before { content: "·"; margin: 0 10px; color: #515651; }
.hero-actions { display: flex; align-items: center; gap: 12px; }
.button {
  min-height: 50px; padding: 0 26px; border-radius: 999px; border: 1px solid transparent;
  display: inline-flex; align-items: center; justify-content: center; gap: 11px;
  font-weight: 650; font-size: 14px; cursor: pointer; transition: transform .2s, background .2s, border-color .2s;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--accent); color: #10140c; }
.button-primary:hover { background: #dcff8f; }
.button-ghost { border-color: rgba(255,255,255,.2); background: rgba(255,255,255,.04); backdrop-filter: blur(8px); }
.button-ghost:hover { border-color: rgba(255,255,255,.4); }
.scroll-hint {
  position: absolute; z-index: 3; bottom: 31px; right: 36px;
  color: #879088; font-size: 10px; letter-spacing: .2em; writing-mode: vertical-rl;
  display: flex; align-items: center; gap: 10px;
}
.scroll-hint span { height: 36px; width: 1px; background: linear-gradient(var(--accent), transparent); }

.hero.is-empty {
  background: linear-gradient(145deg, #151916 0%, #0c0f0d 62%, #101610 100%);
}
.ambient { position: absolute; border-radius: 50%; filter: blur(20px); opacity: .4; }
.ambient-one { width: 520px; height: 520px; right: -140px; top: -120px; background: radial-gradient(circle, rgba(201,255,85,.42), transparent 68%); }
.ambient-two { width: 400px; height: 400px; left: 35%; bottom: -300px; background: rgba(86,130,82,.42); }
.empty-visual {
  position: absolute; right: 7%; top: 50%; transform: translateY(-50%);
  width: min(42%, 520px); aspect-ratio: 4/5; display: grid; place-items: center;
}
.film-frame {
  width: 72%; aspect-ratio: 4/5; border: 1px solid rgba(201,255,85,.24);
  border-radius: 999px 999px 18px 18px; display: grid; place-items: center;
  background: radial-gradient(circle at 50% 35%, rgba(201,255,85,.18), transparent 42%), #101410;
  box-shadow: 0 0 0 28px rgba(255,255,255,.018), 0 0 0 56px rgba(255,255,255,.012);
}
.film-frame span {
  width: 90px; height: 90px; display: grid; place-items: center; padding-left: 5px;
  border-radius: 50%; background: var(--accent); color: #11160d; font-size: 25px;
  box-shadow: 0 20px 60px rgba(201,255,85,.25);
}
.empty-visual p { position: absolute; bottom: 5%; font-size: 9px; letter-spacing: .4em; color: #778078; }

.library, .related-section { width: min(calc(100% - 64px), var(--max)); margin: 0 auto 128px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 36px; }
.section-kicker { margin-bottom: 14px; }
.section-head h2, .admin-panel h2 { margin: 0; font-size: clamp(32px, 4vw, 52px); letter-spacing: -.04em; }
.section-head > p, .panel-head > span { color: var(--muted); font-size: 13px; }
.category-row { display: flex; gap: 9px; overflow-x: auto; padding: 2px 0 32px; scrollbar-width: none; }
.category-row::-webkit-scrollbar { display: none; }
.category-row a {
  flex-shrink: 0; padding: 10px 18px; border: 1px solid var(--line); border-radius: 999px;
  color: #a6ada7; font-size: 12px; transition: .2s;
}
.category-row a:hover, .category-row a.active { color: #11160d; background: var(--accent); border-color: var(--accent); }
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 38px 22px; }
.video-card { min-width: 0; }
.card-cover {
  display: block; aspect-ratio: 16/10; border-radius: 16px; overflow: hidden; position: relative;
  background: radial-gradient(circle at 70% 20%, #394c38, transparent 34%), linear-gradient(140deg, #1e2920, #111512);
  background-size: cover; background-position: center;
}
.card-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(0,0,0,.55), transparent 60%); transition: background .3s; }
.card-cover:hover::after { background: rgba(0,0,0,.25); }
.play-button {
  width: 54px; height: 54px; border-radius: 50%; position: absolute; z-index: 2; left: 50%; top: 50%;
  transform: translate(-50%, -50%) scale(.9); display: grid; place-items: center; padding-left: 3px;
  background: rgba(242,240,232,.94); color: #111; font-size: 14px; opacity: 0; transition: .25s;
}
.card-cover:hover .play-button { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.cover-letter { position: absolute; inset: 0; display: grid; place-items: center; font: 400 90px/1 Georgia, serif; color: rgba(201,255,85,.18); }
.featured-badge, .duration { position: absolute; z-index: 2; bottom: 13px; border-radius: 999px; font-size: 10px; }
.featured-badge { left: 13px; background: var(--accent); color: #10140c; padding: 6px 10px; }
.duration { right: 13px; background: rgba(0,0,0,.66); padding: 6px 9px; }
.card-body { padding: 18px 3px 0; }
.card-body > p { margin: 0 0 9px; color: var(--accent-dark); font-size: 10px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.card-body > p span { color: #515752; }
.card-body h3 { margin: 0; font-size: 19px; letter-spacing: -.02em; font-weight: 600; }
.card-body h3 a:hover { color: var(--accent); }
.card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 18px; color: #747b75; font-size: 11px; }
.card-footer a { color: #bec4bf; }
.card-footer b { color: var(--accent); margin-left: 4px; }
.empty-state {
  min-height: 360px; border: 1px dashed rgba(255,255,255,.15); border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  background: rgba(255,255,255,.018);
}
.empty-state > span { color: var(--accent); font-size: 50px; }
.empty-state h3 { font-size: 24px; margin: 12px 0 6px; }
.empty-state p { color: var(--muted); margin: 0 0 24px; }
.manifesto {
  width: min(calc(100% - 64px), var(--max)); margin: 0 auto 120px; padding: 84px clamp(32px, 6vw, 90px);
  border-radius: 28px; background: #dfe9d9; color: #161b16; display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end;
}
.manifesto .section-kicker { color: #4f6747; }
.manifesto h2 { margin: 0; font-size: clamp(38px, 5vw, 68px); letter-spacing: -.055em; line-height: 1.16; }
.manifesto h2 em { color: #507629; }
.manifesto-copy > p { color: #4d594f; line-height: 1.9; font-size: 15px; max-width: 500px; }
.manifesto-stats { margin-top: 36px; display: grid; gap: 16px; }
.manifesto-stats span { border-top: 1px solid rgba(21,27,21,.17); padding-top: 14px; font-size: 13px; }
.manifesto-stats b { color: #6a8064; margin-right: 30px; font: 400 11px/1 Georgia, serif; }
footer {
  width: min(calc(100% - 64px), var(--max)); min-height: 190px; margin: 0 auto;
  border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px;
}
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand div { display: flex; flex-direction: column; gap: 5px; }
.footer-brand small, footer > p { color: #6d746e; font-size: 10px; }
.footer-links { display: flex; gap: 28px; color: #929a93; font-size: 12px; }
footer > p { text-align: right; letter-spacing: .1em; }

.site-header.compact { height: 84px; }
.back-link { color: #929a93; font-size: 13px; }
.player-section { width: min(calc(100% - 64px), var(--max)); margin: 0 auto 120px; }
.player-shell { background: #000; border-radius: 22px; overflow: hidden; box-shadow: 0 40px 100px rgba(0,0,0,.4); }
.player-shell video { width: 100%; max-height: calc(100vh - 120px); aspect-ratio: 16/9; display: block; background: #000; }
.watch-info { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; padding: 46px 4px 0; }
.watch-title h1 { font-size: clamp(36px, 4.5vw, 64px); line-height: 1.1; letter-spacing: -.045em; margin: 0 0 22px; }
.watch-description { padding-top: 38px; }
.watch-description > p { color: #aab1ab; line-height: 1.9; font-size: 14px; margin: 0 0 24px; }
.share-button { background: transparent; border: 0; border-bottom: 1px solid #59605a; padding: 0 0 8px; cursor: pointer; font-size: 12px; }
.share-button span { color: var(--accent); margin-left: 8px; }
.related-section { padding-top: 20px; }
.related-section .video-grid { grid-template-columns: repeat(3, 1fr); }
.not-found { min-height: calc(100vh - 84px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.not-found > span { color: var(--accent); font: 400 90px/1 Georgia, serif; }
.not-found h1 { font-size: 34px; margin: 18px 0 8px; }
.not-found p { color: var(--muted); margin: 0 0 28px; }
.share-toast {
  position: fixed; left: 50%; bottom: 30px; transform: translate(-50%, 30px); opacity: 0;
  padding: 12px 20px; border-radius: 999px; background: var(--text); color: #111; font-size: 12px; transition: .25s; z-index: 100;
}
.share-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

.admin-login-page { min-height: 100vh; background: radial-gradient(circle at 80% 10%, rgba(201,255,85,.12), transparent 34%), var(--bg); }
.login-shell { min-height: 100vh; width: min(calc(100% - 48px), 1160px); margin: 0 auto; display: grid; grid-template-rows: 110px 1fr 70px; }
.login-shell > .brand { align-self: center; }
.login-card { width: min(100%, 460px); align-self: center; justify-self: center; padding: 44px; border: 1px solid var(--line); background: rgba(20,24,21,.92); border-radius: 26px; box-shadow: 0 40px 100px rgba(0,0,0,.3); }
.login-card h1 { font-size: 42px; margin: 0 0 8px; letter-spacing: -.05em; }
.login-card > div > p:last-child { color: var(--muted); margin: 0 0 28px; }
.login-form { display: grid; gap: 18px; }
.login-form label, .upload-form label { color: #afb6b0; font-size: 12px; display: grid; gap: 9px; }
.login-form input, .upload-form input:not([type=checkbox]):not([type=file]), .upload-form textarea {
  width: 100%; background: #0e110f; color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 14px 15px; outline: 0;
}
.login-form input:focus, .upload-form input:focus, .upload-form textarea:focus { border-color: rgba(201,255,85,.6); }
.login-form .button { margin-top: 5px; width: 100%; }
.login-back { display: block; margin-top: 26px; color: #7b837c; text-align: center; font-size: 11px; }
.login-foot { color: #4f5650; font-size: 9px; letter-spacing: .3em; align-self: center; text-align: center; }
.alert { padding: 13px 16px; margin-bottom: 22px; border-radius: 10px; font-size: 12px; }
.alert.success { background: rgba(201,255,85,.1); color: #d5ff7c; border: 1px solid rgba(201,255,85,.2); }
.alert.error { background: rgba(255,107,100,.1); color: #ffaaa5; border: 1px solid rgba(255,107,100,.2); }

.admin-page { background: #0d100e; }
.admin-sidebar {
  position: fixed; inset: 0 auto 0 0; width: 230px; padding: 30px 24px; border-right: 1px solid var(--line);
  background: #0a0d0b; display: flex; flex-direction: column; z-index: 20;
}
.admin-sidebar nav { margin-top: 58px; display: grid; gap: 8px; }
.admin-sidebar nav a { padding: 13px 15px; border-radius: 10px; color: #848c85; font-size: 12px; }
.admin-sidebar nav a span { width: 22px; display: inline-block; color: #677068; }
.admin-sidebar nav a:hover, .admin-sidebar nav a.active { background: rgba(255,255,255,.05); color: var(--text); }
.admin-sidebar nav a.active span { color: var(--accent); }
.logout-form { margin-top: auto; }
.logout-form button { width: 100%; background: transparent; color: #777f78; border: 1px solid var(--line); border-radius: 10px; padding: 11px; cursor: pointer; }
.admin-main { margin-left: 230px; width: min(calc(100% - 230px), 1280px); padding: 48px clamp(28px, 5vw, 72px) 90px; }
.admin-header { display: flex; justify-content: space-between; align-items: end; margin-bottom: 36px; }
.admin-header .section-kicker { margin-bottom: 12px; }
.admin-header h1 { font-size: clamp(34px, 4vw, 52px); margin: 0; letter-spacing: -.05em; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-grid article { background: #151916; border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.stat-grid span { display: block; color: #8d958e; font-size: 11px; }
.stat-grid b { display: inline-block; font-size: 36px; margin: 15px 8px 0 0; letter-spacing: -.04em; }
.stat-grid small { color: #697069; font-size: 10px; }
.admin-panel { background: #151916; border: 1px solid var(--line); border-radius: 20px; padding: 30px; margin-bottom: 24px; }
.panel-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 28px; }
.panel-head h2 { font-size: 28px; }
.panel-head > a { color: var(--accent); font-size: 11px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .wide { grid-column: 1/-1; }
.upload-form em { color: var(--danger); font-style: normal; }
.upload-form textarea { resize: vertical; min-height: 100px; }
.file-drop {
  min-height: 180px; border: 1px dashed rgba(255,255,255,.18); border-radius: 14px;
  position: relative; display: flex !important; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  cursor: pointer; transition: .2s; background: rgba(255,255,255,.015);
}
.file-drop:hover, .file-drop.has-file { border-color: rgba(201,255,85,.5); background: rgba(201,255,85,.025); }
.file-drop input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.file-icon { font-size: 22px; color: var(--accent); margin-bottom: 8px; }
.file-drop b { color: var(--text); font-size: 13px; }
.file-drop small { color: #697069; }
.file-drop i { color: #9ea69f; max-width: 80%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-style: normal; font-size: 10px; }
.form-actions { margin-top: 22px; display: flex; align-items: center; justify-content: flex-end; gap: 24px; }
.switch { display: flex !important; grid-auto-flow: column; align-items: center; gap: 9px !important; cursor: pointer; }
.switch input { position: absolute; opacity: 0; }
.switch span { width: 34px; height: 20px; background: #343a35; border-radius: 999px; position: relative; transition: .2s; }
.switch span::after { content: ""; position: absolute; width: 14px; height: 14px; border-radius: 50%; background: #858c86; left: 3px; top: 3px; transition: .2s; }
.switch input:checked + span { background: var(--accent); }
.switch input:checked + span::after { transform: translateX(14px); background: #111; }
.admin-video-list { display: grid; }
.admin-video-list article {
  display: grid; grid-template-columns: 126px 1fr auto; gap: 18px; align-items: center;
  padding: 18px 0; border-top: 1px solid var(--line);
}
.admin-video-list article:last-child { padding-bottom: 0; }
.admin-thumb { aspect-ratio: 16/10; background: linear-gradient(140deg, #2b3d2c, #151a16); background-size: cover; background-position: center; border-radius: 10px; overflow: hidden; display: grid; place-items: center; }
.admin-thumb span { font: 400 34px/1 Georgia, serif; color: rgba(201,255,85,.35); }
.status-line { display: flex; gap: 6px; margin-bottom: 7px; }
.status-line span { padding: 4px 7px; border-radius: 5px; font-size: 9px; }
.status-line .published { background: rgba(201,255,85,.1); color: var(--accent); }
.status-line .draft { background: rgba(255,255,255,.07); color: #9da39e; }
.status-line .featured { background: rgba(255,211,91,.1); color: #ffd35b; }
.admin-video-copy h3 { margin: 0 0 8px; font-size: 15px; }
.admin-video-copy p { margin: 0; color: #737b74; font-size: 10px; }
.admin-actions { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; justify-content: flex-end; }
.admin-actions a, .admin-actions button { background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; color: #a8afa9; font-size: 10px; cursor: pointer; }
.admin-actions a:hover, .admin-actions button:hover { border-color: #59615a; }
.admin-actions .danger { color: #ff8781; }
.admin-empty { text-align: center; padding: 54px 20px; border-top: 1px solid var(--line); }
.admin-empty > span { color: var(--accent); font-size: 30px; }
.admin-empty h3 { margin: 10px 0 5px; }
.admin-empty p { color: var(--muted); font-size: 12px; }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .header-search { margin-left: auto; }
  .menu-toggle { display: block; flex-shrink: 0; }
  .mobile-nav {
    position: absolute; z-index: 19; top: 78px; right: 24px; width: 180px;
    padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: #171b18;
    flex-direction: column; box-shadow: 0 25px 60px rgba(0,0,0,.35);
  }
  .mobile-nav.is-open { display: flex; }
  .mobile-nav a { padding: 11px 12px; border-radius: 8px; font-size: 13px; }
  .mobile-nav a:hover { background: rgba(255,255,255,.06); }
  .hero-content { width: 61%; }
  .empty-visual { right: 1%; width: 38%; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .manifesto { grid-template-columns: 1fr; gap: 42px; }
  .watch-info { grid-template-columns: 1fr; gap: 0; }
  .watch-description { padding-top: 0; max-width: 760px; }
  .admin-sidebar { position: static; width: 100%; height: 78px; padding: 0 28px; flex-direction: row; align-items: center; }
  .admin-sidebar nav { margin: 0 0 0 auto; display: flex; }
  .logout-form { margin: 0 0 0 10px; }
  .logout-form button { width: auto; }
  .admin-main { margin-left: 0; width: 100%; }
}

@media (max-width: 680px) {
  .site-header { width: calc(100% - 36px); height: 76px; gap: 14px; }
  .brand-mark { width: 36px; height: 36px; }
  .header-search { display: none; }
  .hero {
    width: calc(100% - 20px); height: calc(100svh - 86px); min-height: 620px; max-height: 760px;
    margin-bottom: 72px; border-radius: 3px 3px 24px 24px;
  }
  .hero-backdrop { background-position: 65% center; }
  .hero-backdrop::after { background: linear-gradient(0deg, rgba(3,5,4,.98) 8%, rgba(3,5,4,.44) 70%, rgba(3,5,4,.16)); }
  .hero-content { left: 24px; right: 24px; top: auto; bottom: 78px; transform: none; width: auto; }
  .hero h1 { font-size: 45px; margin-bottom: 18px; }
  .hero-description { font-size: 13px; line-height: 1.7; margin-bottom: 18px; }
  .hero-meta { margin-bottom: 24px; }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { min-height: 47px; padding: 0 19px; }
  .empty-hero-content { top: 44%; bottom: auto; transform: translateY(-50%); }
  .empty-visual { display: none; }
  .scroll-hint { display: none; }
  .eyebrow { margin-bottom: 16px; }
  .library, .related-section, .player-section { width: calc(100% - 36px); margin-bottom: 88px; }
  .section-head { align-items: start; margin-bottom: 24px; }
  .section-head h2 { font-size: 34px; }
  .video-grid, .related-section .video-grid { grid-template-columns: 1fr; gap: 32px; }
  .card-cover { aspect-ratio: 16/9; }
  .play-button { opacity: 1; width: 48px; height: 48px; }
  .category-row { margin-right: -18px; padding-bottom: 25px; }
  .manifesto { width: calc(100% - 20px); margin-bottom: 80px; padding: 52px 26px; border-radius: 22px; }
  .manifesto h2 { font-size: 38px; }
  footer { width: calc(100% - 36px); padding: 42px 0; grid-template-columns: 1fr; min-height: 0; }
  .footer-links { order: 3; }
  footer > p { text-align: left; }
  .player-section { width: 100%; }
  .player-shell { border-radius: 0; }
  .player-shell video { max-height: 56.25vw; }
  .watch-info { padding: 28px 20px 0; }
  .watch-title h1 { font-size: 36px; }
  .watch-description { padding-top: 8px; }
  .back-link { font-size: 0; }
  .back-link::after { content: "← 片库"; font-size: 12px; }
  .login-shell { width: calc(100% - 32px); grid-template-rows: 88px 1fr 50px; }
  .login-card { padding: 30px 22px; border-radius: 20px; }
  .admin-sidebar { height: 70px; padding: 0 18px; }
  .admin-sidebar .brand > span:last-child { display: none; }
  .admin-sidebar nav a { padding: 10px; font-size: 0; }
  .admin-sidebar nav a span { font-size: 17px; width: auto; }
  .logout-form button { font-size: 0; padding: 10px; }
  .logout-form button::after { content: "退出"; font-size: 11px; }
  .admin-main { padding: 32px 16px 70px; }
  .admin-header { align-items: start; gap: 14px; }
  .admin-header h1 { font-size: 32px; }
  .admin-header .button { min-height: 42px; padding: 0 15px; font-size: 12px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid article:last-child { grid-column: 1/-1; }
  .admin-panel { padding: 22px 16px; border-radius: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .wide { grid-column: auto; }
  .form-actions { align-items: flex-start; flex-wrap: wrap; gap: 15px; }
  .form-actions .button { width: 100%; }
  .admin-video-list article { grid-template-columns: 94px 1fr; align-items: start; }
  .admin-actions { grid-column: 1/-1; justify-content: flex-start; }
}