:root {
  --ink: #172033;
  --muted: #647187;
  --line: #dce3ec;
  --paper: #f8f7f3;
  --panel: #ffffff;
  --blue: #2857d5;
  --blue-soft: #e9efff;
  --blue-deep: #173b9d;
  --amber: #b66913;
  --amber-soft: #fff1db;
  --violet: #6c4acb;
  --violet-soft: #f0eaff;
  --mint: #1d7a68;
  --mint-soft: #e4f6ef;
  --slate: #33445e;
  --radius: 22px;
  --shadow: 0 14px 40px rgba(23, 32, 51, 0.06);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 90% 1%, rgba(221, 230, 255, 0.86), transparent 24rem),
    radial-gradient(circle at 5% 55%, rgba(254, 237, 211, 0.55), transparent 28rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.55;
}

button, input, select, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; }

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 30;
  padding: 8px 12px;
  border-radius: 8px;
  color: white;
  background: var(--blue);
}
.skip-link:focus { top: 16px; }

:focus-visible {
  outline: 3px solid #5e83ff;
  outline-offset: 3px;
}

.shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 78px;
  padding: 0 max(24px, calc((100% - 1180px) / 2));
  border-bottom: 1px solid rgba(220, 227, 236, 0.86);
  background: rgba(248, 247, 243, 0.72);
  backdrop-filter: blur(16px);
}

.brand { display: inline-flex; align-items: center; gap: 10px; width: fit-content; font-size: 20px; font-weight: 780; letter-spacing: -0.04em; }
.brand-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 9px; color: white; background: var(--ink); font-family: Georgia, serif; font-size: 22px; font-style: italic; }

nav { display: flex; align-items: center; gap: 6px; }
.nav-link { padding: 8px 12px; border-radius: 9px; color: var(--muted); font-size: 14px; font-weight: 650; }
.nav-link:hover, .nav-link.is-active { color: var(--ink); background: rgba(255,255,255,0.88); }
.header-actions { display: flex; justify-content: flex-end; align-items: center; gap: 10px; }
.quiet-button { border: 1px solid var(--line); border-radius: 9px; padding: 6px 9px; color: var(--blue-deep); background: white; font-size: 12px; font-weight: 750; }
.quiet-button:hover { border-color: #9eb4fa; background: var(--blue-soft); }
.avatar { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; color: #1b355d; background: #dae6ff; font-size: 13px; font-weight: 750; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 0.4fr); gap: 44px; align-items: end; padding-top: 72px; padding-bottom: 54px; }
.eyebrow { margin: 0 0 10px; color: var(--blue); font-size: 13px; font-weight: 760; letter-spacing: 0.08em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 680px; margin-bottom: 16px; font-family: Georgia, "Songti SC", "Noto Serif SC", serif; font-size: clamp(38px, 4.25vw, 58px); line-height: 1.15; letter-spacing: -0.055em; }
h2 { margin-bottom: 0; font-family: Georgia, "Songti SC", "Noto Serif SC", serif; font-size: clamp(27px, 3vw, 40px); line-height: 1.15; letter-spacing: -0.055em; }
.hero-copy { max-width: 600px; margin-bottom: 0; color: var(--muted); font-size: 17px; }
.hero-note { display: flex; gap: 13px; padding: 22px; border: 1px solid rgba(188, 206, 255, 0.9); border-radius: 18px; background: rgba(239, 244, 255, 0.72); }
.hero-note p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.note-icon { display: grid; flex: 0 0 auto; width: 29px; height: 29px; place-items: center; border-radius: 9px; color: var(--blue); background: white; }

.channel-section { padding-top: 45px; border-top: 1px solid var(--line); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 25px; }
.section-heading.compact { margin-bottom: 20px; }
.channel-count { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); background: rgba(255,255,255,0.65); font-size: 13px; }

.featured-slot { margin-bottom: 20px; }
.feature-card, .channel-card { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); }
.feature-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(270px, 0.48fr); min-height: 315px; }
.feature-card::after { position: absolute; right: -80px; bottom: -100px; width: 370px; height: 370px; border: 1px solid rgba(255,255,255,0.6); border-radius: 50%; content: ""; }
.feature-content { display: flex; flex-direction: column; align-items: flex-start; padding: clamp(28px, 5vw, 52px); }
.feature-content h3 { margin: 16px 0 12px; font-family: Georgia, "Songti SC", serif; font-size: clamp(30px, 3vw, 45px); letter-spacing: -0.055em; }
.feature-content p { max-width: 440px; margin-bottom: 28px; color: var(--muted); font-size: 17px; }
.feature-art { position: relative; display: grid; min-height: 190px; place-items: center; }
.feature-art .art-orbit { position: absolute; width: 225px; height: 225px; border: 1px solid rgba(255,255,255,0.7); border-radius: 50%; }
.feature-art .art-orbit::before, .feature-art .art-orbit::after { position: absolute; border-radius: 50%; content: ""; }
.feature-art .art-orbit::before { width: 92px; height: 92px; top: 25px; right: -22px; background: rgba(255,255,255,0.88); }
.feature-art .art-orbit::after { width: 44px; height: 44px; bottom: 14px; left: -10px; background: rgba(23,59,157,0.16); }
.feature-art .large-icon { position: relative; z-index: 1; font-size: 86px; transform: rotate(-8deg); }

.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.channel-card { display: flex; min-height: 228px; flex-direction: column; padding: 26px; transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease; }
.channel-card:hover { border-color: #b7c5e5; box-shadow: 0 18px 42px rgba(30, 47, 79, 0.11); transform: translateY(-3px); }
.card-top, .card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.icon-tile { display: grid; width: 46px; height: 46px; place-items: center; border-radius: 14px; font-size: 24px; }
.accent-blue { color: var(--blue-deep); background: var(--blue-soft); }
.accent-amber { color: var(--amber); background: var(--amber-soft); }
.accent-violet { color: var(--violet); background: var(--violet-soft); }
.accent-mint { color: var(--mint); background: var(--mint-soft); }
.accent-slate { color: var(--slate); background: #e8edf5; }
.status { padding: 5px 8px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.status.available { color: #176654; background: #e9f7f0; }
.status.coming_soon { color: #935811; background: #fff4df; }
.status.maintenance { color: #6d3f9f; background: #f1eafe; }
.channel-card h3 { margin: 24px 0 8px; font-size: 24px; letter-spacing: -0.04em; }
.channel-card p { min-height: 50px; margin-bottom: 25px; color: var(--muted); font-size: 15px; }
.card-footer { margin-top: auto; }
.card-link { display: inline-flex; align-items: center; justify-content: center; min-height: 38px; padding: 8px 13px; border-radius: 10px; color: var(--blue-deep); background: var(--blue-soft); font-size: 14px; font-weight: 720; }
.card-link:hover { color: white; background: var(--blue); }
.feature-card .card-link { color: white; background: var(--blue); }
.feature-card .card-link:hover { background: var(--blue-deep); }
.card-meta { color: var(--muted); font-size: 12px; }

.feature-card[data-accent="blue"] { background: linear-gradient(122deg, #ffffff 0%, #f6f8ff 60%, #e8efff 100%); }
.feature-card[data-accent="amber"] { background: linear-gradient(122deg, #ffffff 0%, #fffaf1 60%, #fff0d6 100%); }
.feature-card[data-accent="violet"] { background: linear-gradient(122deg, #ffffff 0%, #fbf9ff 60%, #f0eaff 100%); }

.site-footer { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; margin-top: 60px; padding-top: 24px; padding-bottom: 30px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.site-footer a { color: var(--blue-deep); }
.placeholder-page { max-width: 760px; padding-top: 110px; }
.placeholder-page h1 { font-size: clamp(36px, 5vw, 58px); }
.placeholder-page p:not(.eyebrow) { max-width: 620px; color: var(--muted); font-size: 18px; }
.back-link { display: inline-block; margin-bottom: 64px; color: var(--blue-deep); font-weight: 700; }

@media (max-width: 760px) {
  .shell { width: min(100% - 32px, 1180px); }
  .site-header { grid-template-columns: 1fr auto; min-height: 68px; padding-inline: 16px; }
  nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 30px; padding-top: 54px; padding-bottom: 42px; }
  h1 { font-size: clamp(36px, 10vw, 48px); line-height: 1.14; }
  .hero-copy { font-size: 16px; }
  .channel-section { padding-top: 34px; }
  .feature-card { grid-template-columns: 1fr; }
  .feature-content { padding: 30px; }
  .feature-art { min-height: 150px; }
  .feature-art .large-icon { font-size: 64px; }
  .card-grid { grid-template-columns: 1fr; }
  .channel-card { min-height: 214px; }
  .site-footer { justify-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .channel-card { transition: none; }
}

.admin-body { background: #f5f6f9; }
.admin-shell { width: min(1440px, calc(100% - 48px)); margin: 0 auto; padding: 62px 0 80px; }
.admin-intro { max-width: 760px; margin-bottom: 32px; }
.admin-intro h1 { margin-bottom: 14px; font-size: clamp(42px, 5vw, 68px); }
.admin-intro p:not(.eyebrow) { color: var(--muted); font-size: 17px; }
.admin-chip { padding: 6px 10px; border: 1px solid #f2c77b; border-radius: 999px; color: #8d5410; background: #fff4df; font-size: 12px; font-weight: 760; }
.admin-message { min-height: 0; margin-bottom: 16px; }
.admin-message:not(:empty) { padding: 13px 16px; border: 1px solid #a8c3ff; border-radius: 12px; color: #173b9d; background: #edf3ff; }
.admin-message.error { border-color: #efb7b7; color: #9e2525; background: #fff1f1; }
.admin-layout { display: grid; grid-template-columns: minmax(220px, .6fr) minmax(460px, 1.5fr) minmax(270px, .7fr); gap: 20px; align-items: start; }
.admin-list-panel, .editor-panel, .preview-panel { border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.88); box-shadow: 0 8px 22px rgba(35, 52, 85, .04); }
.admin-list-panel { overflow: hidden; }
.list-heading { display: flex; align-items: end; justify-content: space-between; padding: 20px; border-bottom: 1px solid var(--line); }
.list-heading strong { display: block; }
.list-heading span, .list-heading small { color: var(--muted); font-size: 12px; }
.admin-card-list { display: grid; gap: 4px; padding: 8px; }
.admin-card-item { display: grid; width: 100%; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; padding: 12px; border: 1px solid transparent; border-radius: 12px; color: var(--ink); background: transparent; text-align: left; }
.admin-card-item:hover, .admin-card-item.is-selected { border-color: #b6c7f3; background: #f1f5ff; }
.admin-card-item strong, .admin-card-item small { display: block; }
.admin-card-item small { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.admin-card-item .icon-tile { width: 34px; height: 34px; border-radius: 10px; font-size: 18px; }
.admin-card-order { color: var(--muted); font-size: 12px; }
.editor-panel { padding: 28px; }
.editor-heading, .preview-heading { display: flex; align-items: start; justify-content: space-between; gap: 16px; }
.editor-heading { margin-bottom: 24px; }
.editor-heading h2 { font-size: 30px; }
.card-form { display: grid; gap: 20px; }
fieldset { min-width: 0; margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px; }
legend { padding: 0 6px; color: var(--blue-deep); font-size: 13px; font-weight: 780; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-grid label, .publish-note { display: grid; gap: 6px; color: #34415b; font-size: 13px; font-weight: 700; }
.form-grid input, .form-grid select, .form-grid textarea, .publish-note input { width: 100%; border: 1px solid #c7d0df; border-radius: 9px; padding: 10px 11px; color: var(--ink); background: white; font-weight: 500; }
.form-grid textarea { resize: vertical; line-height: 1.45; }
.form-grid input[readonly] { color: var(--muted); background: #f6f8fc; }
.span-2 { grid-column: span 2; }
.field-hint { margin: -3px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.checkbox-line { display: flex !important; align-items: center; align-self: end; gap: 9px !important; min-height: 42px; }
.checkbox-line input { width: 18px; height: 18px; }
.editor-actions { display: flex; align-items: end; justify-content: space-between; gap: 18px; padding: 18px 0 0; }
.publish-note { flex: 1; }
.button-row { display: flex; gap: 10px; }
.primary-button, .secondary-button { min-height: 42px; border-radius: 10px; padding: 10px 14px; font-weight: 760; }
.primary-button { border: 1px solid var(--blue); color: white; background: var(--blue); }
.primary-button:hover { background: var(--blue-deep); }
.secondary-button { border: 1px solid #bdc8d8; color: var(--ink); background: white; }
.secondary-button:hover { background: #f5f7fb; }
.primary-button:disabled, .secondary-button:disabled { cursor: not-allowed; opacity: .55; }
.preview-panel { position: sticky; top: 18px; padding: 20px; }
.preview-heading { align-items: center; margin-bottom: 17px; }
.admin-preview { min-height: 272px; }
.admin-preview .channel-card { min-height: 260px; padding: 20px; box-shadow: none; }
.admin-preview .channel-card h3 { margin-top: 18px; }
.preview-note { margin: 16px 2px 0; color: var(--muted); font-size: 12px; }

@media (max-width: 1080px) {
  .admin-layout { grid-template-columns: minmax(190px, .65fr) minmax(0, 1.5fr); }
  .preview-panel { position: static; grid-column: 1 / -1; }
  .admin-preview { max-width: 420px; }
}
@media (max-width: 720px) {
  .admin-shell { width: min(100% - 32px, 1440px); padding-top: 42px; }
  .admin-layout { grid-template-columns: 1fr; }
  .editor-panel, .preview-panel { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .editor-actions { align-items: stretch; flex-direction: column; }
  .button-row { justify-content: stretch; }
  .button-row button { flex: 1; }
}

.browse-channels { display: inline-flex; align-items: center; min-height: 44px; color: var(--blue-deep); font-weight: 700; }
#channels { scroll-margin-top: 20px; }
@media (max-width: 760px) { .hero { padding-top: 30px; gap: 22px; padding-bottom: 28px; } .feature-art { min-height: 96px; } .feature-art .large-icon { font-size: 48px; } }

/* Workspace density: keep entry points ahead of decorative space. */
.channel-section{padding-top:28px}.section-heading{margin-bottom:20px}
.feature-card{min-height:250px}.feature-content{padding:30px 36px}.feature-content h3{font-size:36px;margin:12px 0}.feature-content p{font-size:16px;margin-bottom:20px}
.feature-card::after{pointer-events:none}.feature-art{overflow:hidden}.card-link{position:relative;z-index:1}
@media(max-width:760px){.feature-content{padding:24px}.feature-content h3{font-size:30px}.feature-art{min-height:72px}.feature-art .art-orbit{width:110px;height:110px}.feature-card::after{display:none}.section-heading h2{font-size:28px}.channel-count{white-space:nowrap}.section-heading{gap:12px}}

@media(min-width:901px){
  .channel-section{padding-top:16px}
  .section-heading{margin-bottom:16px}
  .section-heading h2{font-size:34px}
  .feature-card{min-height:230px}
  .feature-content{padding:24px 32px}
}
@media(min-width:901px) and (max-height:820px){
  .channel-section{padding-top:12px}
  .section-heading{margin-bottom:12px}
  .section-heading .eyebrow{margin-bottom:6px}
  .section-heading h2{font-size:30px}
  .feature-card{min-height:210px}
  .feature-content{padding:18px 28px}
  .feature-content h3{font-size:32px;margin:8px 0}
  .feature-content p{margin-bottom:14px}
}

/* Mobile sign-in is disclosed above channels; desktop retains the full card. */
.home-workspace{display:grid;grid-template-columns:minmax(0,1fr) 390px;column-gap:40px;width:min(1180px,calc(100% - 48px));margin-inline:auto}
.home-workspace>.hero{grid-column:1;grid-row:1;display:block;width:100%;min-width:0;align-self:center;padding:24px 0}
.home-workspace>.channel-section{grid-column:1/-1;grid-row:2;width:100%;min-width:0}
.home-login-region{grid-column:2;grid-row:1;margin-block:12px;justify-self:end;width:100%;scroll-margin-top:16px}
.home-login-collapse,#home-login-toggle,#home-mobile-account{display:none}
.home-login-region>.home-login-card{margin:0}
.site-footer{justify-content:center;align-items:center;gap:0 10px;font-size:13px}
.footer-item{display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.footer-item a{display:inline-flex;align-items:center;min-height:44px}
@media(min-width:761px) and (max-width:1000px){.home-workspace{grid-template-columns:minmax(0,1fr) 350px;column-gap:24px}.home-login-region{max-width:350px}}
@media(max-width:760px){
 .home-workspace{display:block;width:calc(100% - 32px)}
 .home-workspace>.hero{padding:12px 0}.home-workspace>.hero .eyebrow{margin-bottom:6px}
 .home-workspace>.hero h1{font-size:32px;margin-bottom:10px}
 .home-workspace .hero-copy{font-size:15px;line-height:1.6}
 .home-workspace>.hero .browse-channels{display:none}
 .home-workspace>.channel-section{padding-top:12px;margin-bottom:24px}
 .home-workspace .section-heading{display:block;position:relative;margin-bottom:16px}.home-workspace .section-heading .eyebrow{margin-bottom:12px}.home-workspace .section-heading .channel-count{position:absolute;right:0;top:0;padding:4px 8px;font-size:12px}
 .home-workspace .section-heading h2{font-size:26px}
 .home-workspace .feature-content{padding:18px}
 .home-login-region{display:none;margin:0 auto 20px;max-width:390px}
 .home-login-region.is-expanded{display:block}
 .home-login-collapse{display:block;margin:0 0 8px auto;min-height:44px}
 #home-login-toggle,#home-mobile-account{display:inline-flex;align-items:center;justify-content:center;min-height:44px}
 #home-mobile-account[hidden],#home-login-toggle[hidden]{display:none}
 .site-footer{margin-top:32px;padding-top:16px;padding-bottom:20px;gap:0 8px;font-size:12px}
 .footer-item{gap:8px}
}

/* Mobile header actions share one visual and touch target size. */
@media(max-width:760px){
 .site-header .header-actions>#home-login-toggle,
 .site-header .header-actions>.language-switch{
  display:inline-flex;align-items:center;justify-content:center;
  box-sizing:border-box;width:44px;height:44px;min-width:44px;min-height:44px;
  padding:0;flex:0 0 44px;line-height:1;
 }
 .site-header .header-actions>#home-login-toggle[hidden]{display:none}
}