/* 悬浮玻璃主题：在统一组件上叠加材质、深度和动效。 */
:root {
  --color-bg: #eaf0fa;
  --color-surface: #ffffff82;
  --color-surface-hover: #ffffffb8;
  --color-glass: #ffffff75;
  --color-border: #ffffffc9;
  --color-primary: #5267d9;
  --color-text: #2a3455;
  --color-muted: #66718f;
  --color-soft: #eef0ffc2;
  --color-highlight: #e7edff85;
  --color-accent: #46bcb7;
  --color-chart-track: #cdd7ec75;
  --glass-edge: #ffffffed;
  --glass-shadow: #778bbb21;
  --glass-glow: #ffffff99;
  --mesh-one: #c5dcff;
  --mesh-two: #d5cef8;
  --mesh-three: #c4f0ea;
  --radius: 24px;
  --shadow: inset 0 1px 0 var(--glass-edge), inset 0 -2px 1px #8198bd0c, 0 12px 28px -15px #617bab55, 0 3px 6px #647daa08;
  --shadow-raised: inset 0 1px 0 var(--glass-edge), 0 22px 50px -20px #5e76a64d;
}
[data-theme=dark] {
  --color-bg: #161c35;
  --color-surface: #26304b99;
  --color-surface-hover: #35405dbb;
  --color-glass: #222b478c;
  --color-border: #a7bcdf27;
  --color-primary: #b1b9ff;
  --color-text: #edf1ff;
  --color-muted: #b4bdd8;
  --color-soft: #434d7885;
  --color-highlight: #35466a70;
  --color-accent: #81d8d2;
  --color-chart-track: #6c80b23d;
  --glass-edge: #c1d3ff38;
  --glass-shadow: #00000033;
  --glass-glow: #b4c8ff1a;
  --mesh-one: #293f69;
  --mesh-two: #473963;
  --mesh-three: #1c4a50;
}
body {
  background: var(--color-bg);
  isolation: isolate;
}
body::before {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse at 80% 8%, var(--mesh-two), transparent 52%),
    radial-gradient(ellipse at 7% 20%, var(--mesh-one), transparent 56%),
    radial-gradient(ellipse at 60% 95%, var(--mesh-three), transparent 55%);
}
.shell { grid-template-columns: clamp(212px, 16vw, 244px) minmax(0, 1fr); gap: 28px; padding: 24px; }
.sidebar {
  top: 24px; height: calc(100dvh - 48px); padding: 28px 16px 22px;
  border: 1px solid var(--color-border); border-radius: 24px;
  background: var(--color-glass); backdrop-filter: blur(28px) saturate(1.25);
  box-shadow: var(--shadow); scrollbar-width: none;
}
.brand { justify-content: flex-start; flex-direction: row; gap: 12px; font-size: 23px; }
.brand img { width: 38px; height: 38px; }
.sidebar .brand { padding: 0 10px; }
.brand-caption { display: block; margin: 9px 0 0 60px; font-size: 11px; }
.nav-label { display: block; padding: 18px 15px 9px; font-size: 11px; }
.nav { gap: 6px; margin-top: 30px; }
.nav a { flex-direction: row; justify-content: flex-start; gap: 13px; padding: 12px 15px; font-size: 13px; min-height: 47px; border-radius: 13px; white-space: nowrap; transition: background 200ms, transform 240ms var(--ease), box-shadow 240ms; }
.nav a svg { flex: 0 0 20px; }
.nav a.active { background: var(--color-surface-hover); box-shadow: inset 0 1px 0 var(--glass-edge), 0 5px 12px #6376ad14; }
.nav a:hover { transform: translateY(-2px); background: var(--color-surface-hover); }
.sidebar-foot { padding: 24px 15px 0; text-align: left; }
.sidebar-foot a { flex-direction: row; gap: 13px; font-size: 12px; }
.sidebar-foot small { display: block; margin-top: 12px; font-size: 10px; line-height: 1.8; }
.main { background: none; }
.topbar { height: 48px; padding: 0 4px; background: none; border: 0; }
.breadcrumb { padding: 8px 14px; border-radius: 30px; background: var(--color-glass); border: 1px solid var(--color-border); backdrop-filter: blur(16px); }
.user-entry { padding: 4px 12px 4px 4px; border: 1px solid var(--color-border); border-radius: 24px; background: var(--color-glass); }
.content { padding: 24px 0 40px; max-width: 1340px; }
.heading { margin-bottom: 26px; }
.heading h1 { font-size: 30px; letter-spacing: -1px; }
.card, dialog {
  background: linear-gradient(125deg, var(--color-surface-hover), var(--color-surface));
  border: 1px solid var(--color-border); backdrop-filter: blur(26px) saturate(1.2);
  -webkit-backdrop-filter: blur(26px) saturate(1.2); box-shadow: var(--shadow);
}
.card { position: relative; transition: box-shadow 300ms var(--ease), border-color 300ms, transform 350ms var(--ease); }
.card::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(260px circle at var(--light-x, 10%) var(--light-y, 0%), var(--glass-glow), transparent 75%);
  opacity: .3; transition: opacity 350ms;
}
.card > * { position: relative; }
.card[data-tilt] { transform: perspective(1100px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)) translateY(var(--lift, 0px)); }
.card.is-tilting { --lift: -4px; box-shadow: var(--shadow-raised); transition: transform 130ms ease-out, box-shadow 250ms; }
.card.is-tilting::before { opacity: .8; }
.btn { position: relative; overflow: hidden; border-radius: 12px; transition: transform 220ms var(--ease), box-shadow 220ms, background 220ms; }
.btn:not(.secondary):not(.ghost):not(.danger) { background: linear-gradient(135deg, var(--color-primary), color-mix(in srgb, var(--color-primary), #8295ec 38%)); box-shadow: inset 0 1px 0 #ffffff44, 0 6px 15px #5368cb26; }
.btn.secondary { background: var(--color-glass); box-shadow: inset 0 1px 0 var(--glass-edge), 0 3px 7px #6784b30b; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 9px 20px #5368cb26; }
.btn:active { transform: translateY(1px) scale(.97); }
.btn.ghost:hover { box-shadow: none; }
.ripple { position: absolute; width: 18px; height: 18px; border-radius: 50%; background: currentColor; opacity: .18; pointer-events: none; transform: translate(-50%, -50%); animation: ripple-out 550ms ease-out forwards; }
.tabs button { border-color: var(--color-border); background: var(--color-glass); transition: transform 180ms, box-shadow 180ms; }
.tabs button.active { background: var(--color-surface-hover); box-shadow: var(--shadow); border-color: var(--color-border); }
.tabs button:active { transform: scale(.96); }
input, select, textarea { background: var(--color-glass); border-color: color-mix(in srgb, var(--color-muted), transparent 76%); }
th { background: var(--color-glass); }
td, .list-item, .announcement-row { border-color: color-mix(in srgb, var(--color-muted), transparent 85%); }
.notice { background: var(--color-glass); }
.badge { background: var(--color-surface-hover); }
.plan.highlight { background: linear-gradient(150deg, var(--color-surface-hover), var(--color-highlight)); box-shadow: var(--shadow-raised); border-color: color-mix(in srgb, var(--color-primary), transparent 55%); }
.plan ul, hr { border-color: color-mix(in srgb, var(--color-muted), transparent 84%); }
.public-header .brand { flex-direction: row; font-size: 23px; }
.hero { padding-top: 30px; }
.hero img, .auth-art img { filter: drop-shadow(0 24px 24px #637ea42b); animation: art-arrive 800ms var(--ease) both; }
.auth .card { border-radius: 30px; }
.auth:has(.koi-art) { max-width: 1130px; grid-template-columns: 1.2fr 1fr; gap: 54px; margin-top: 8px; }
.auth-art.koi-art { padding: 8px 0 16px; position: relative; }
.koi-copy { padding-left: 24px; }
.koi-copy h1 { font-size: 37px; line-height: 1.4; margin-bottom: 10px; }
.koi-copy p { font-size: 13px; }
.auth-art.koi-art img { display: block; width: 100%; height: auto; max-height: 470px; object-fit: contain; margin-top: 12px; filter: drop-shadow(0 18px 18px #537bac18); }
.preview summary { backdrop-filter: blur(20px); box-shadow: var(--shadow); }
.preview .card { background: var(--color-surface-hover); }
dialog[open] { animation: dialog-in 260ms var(--ease); }
dialog::backdrop { background: #18234438; backdrop-filter: blur(8px); }

/* 总览：错落的十二列玻璃网格。 */
.dashboard { display: block; }
.dashboard .heading { margin-bottom: 26px; }
.bento-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 22px; align-items: stretch; }
.usage-card { grid-column: span 7; grid-row: span 2; min-height: 465px; padding: 30px; display: flex; flex-direction: column; overflow: hidden; }
.usage-card::after { content: ''; position: absolute; width: 270px; height: 270px; border-radius: 50%; right: -120px; top: 80px; border: 1px solid var(--glass-edge); box-shadow: 0 0 0 22px #ffffff0b, 0 0 0 45px #ffffff08; pointer-events: none; }
.usage-card .section-head { margin-bottom: 0; }
.usage-card h2 { font-size: 21px; }
.usage-center { display: grid; grid-template-columns: 240px 1fr; align-items: center; gap: 24px; flex: 1; padding: 28px 0; }
.usage-orbit { width: 240px; height: 240px; position: relative; display: grid; place-items: center; }
.usage-orbit::before { content: ''; position: absolute; inset: 18px; border-radius: 50%; background: linear-gradient(140deg, #ffffff65, #ffffff0b); box-shadow: inset 0 2px 2px var(--glass-edge), inset 0 -7px 14px #6689c320, 0 15px 26px #627aae22; }
.usage-ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); filter: drop-shadow(0 6px 5px #6d7eb522); }
.ring-track { fill: none; stroke: var(--color-chart-track); stroke-width: 7; }
.ring-value { fill: none; stroke: var(--color-primary); stroke-width: 8; stroke-linecap: round; stroke-dasharray: var(--used) 100; animation: ring-in 850ms var(--ease); }
.orbit-value { display: grid; text-align: center; z-index: 1; }
.orbit-value strong { font-size: 45px; font-weight: 600; line-height: 1.2; letter-spacing: -1.8px; font-variant-numeric: tabular-nums; }
.orbit-value span { color: var(--color-muted); font-size: 12px; margin-top: 8px; }
.usage-details { display: grid; gap: 24px; }
.usage-details small { display: block; }
.usage-details strong { display: block; font-size: 23px; font-weight: 550; margin-top: 3px; font-variant-numeric: tabular-nums; }
.usage-details strong span { font-size: 12px; font-weight: 400; color: var(--color-muted); }
.usage-footer { display: flex; gap: 14px; align-items: center; justify-content: space-between; border-top: 1px solid var(--color-border); padding-top: 20px; }
.usage-footer strong { display: block; font-size: 14px; font-weight: 500; margin-top: 3px; }
.subscription-card { grid-column: span 5; padding: 26px; }
.subscription-card .section-head { margin-bottom: 10px; }
.subscription-card p { font-size: 12px; margin-bottom: 22px; }
.subscription-card .subscription-actions { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.bento-metrics { grid-column: span 5; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.bento-metrics .metric { padding: 19px 22px; border-radius: 20px; }
.metric-top { display: flex; align-items: center; justify-content: space-between; }
.metric-top svg { width: 17px; height: 17px; color: var(--color-primary); opacity: .8; }
.bento-metrics .big { margin: 5px 0 0; font-size: 27px; }
.traffic-card { grid-column: span 7; padding: 26px 30px; }
.announcement-card { grid-column: span 5; padding: 26px; }
.traffic-card .mini-chart { height: 180px; }
.chart-bar { transform-box: fill-box; transform-origin: bottom; animation: bar-in 650ms var(--ease) both; }
.chart-bar:hover { opacity: 1; filter: brightness(1.12); }
.announcement-card .announcement-row { align-items: start; flex-direction: column; gap: 4px; padding: 16px 0; }
.announcement-card .announcement-row small { font-size: 11px; }
.announcement-card .announcement-row button { font-size: 13px; }
.guide-link { margin-top: 18px; display: flex; justify-content: space-between; padding: 12px 14px; background: var(--color-glass); border: 1px solid var(--color-border); border-radius: 12px; color: var(--color-primary); font-size: 12px; }

@keyframes ripple-out { to { transform: translate(-50%, -50%) scale(18); opacity: 0; } }
@keyframes dialog-in { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes ring-in { from { stroke-dasharray: 0 100; } }
@keyframes bar-in { from { transform: scaleY(.05); opacity: 0; } }
@keyframes art-arrive { from { opacity: 0; transform: translateY(20px) rotate(-3deg); } to { opacity: 1; transform: none; } }

@media (max-width: 1200px) {
  .shell { grid-template-columns: 204px minmax(0, 1fr); gap: 22px; padding: 20px; }
  .sidebar { top: 20px; height: calc(100dvh - 40px); padding: 26px 14px 20px; }
  .brand-caption { margin-left: 10px; }
  .usage-center { grid-template-columns: 190px 1fr; gap: 12px; }
  .usage-orbit { width: 190px; height: 190px; }
  .orbit-value strong { font-size: 37px; }
  .usage-card { padding: 24px; }
  .bento-grid { gap: 18px; }
  .usage-details strong { font-size: 20px; }
}
@media (max-width: 960px) {
  .auth:has(.koi-art) { gap: 24px; grid-template-columns: 1fr 1fr; }
  .koi-copy { padding-left: 8px; }
  .koi-copy h1 { font-size: 30px; }
  .shell { grid-template-columns: 184px minmax(0, 1fr); gap: 20px; padding: 18px; }
  .sidebar { top: 18px; height: calc(100dvh - 36px); padding: 24px 12px 18px; }
  .nav a { gap: 10px; padding: 11px 12px; font-size: 12px; }
  .bento-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .usage-card { grid-column: 1 / -1; grid-row: auto; min-height: 370px; }
  .usage-center { grid-template-columns: 1fr 1fr; gap: 32px; }
  .usage-orbit { margin: auto; }
  .subscription-card { grid-column: 1 / -1; }
  .bento-metrics { grid-column: 1 / -1; gap: 14px; }
  .bento-metrics .metric { padding: 16px; }
  .bento-metrics .metric-top svg { display: none; }
  .subscription-card .subscription-actions { grid-template-columns: 1fr auto; }
  .traffic-card, .announcement-card { grid-column: 1 / -1; }
  .announcement-card .announcement-row { flex-direction: row; align-items: center; gap: 14px; }
}
@media (max-width: 600px) {
  .auth:has(.koi-art) { display: flex; flex-direction: column; gap: 16px; margin: 0 auto; padding-top: 0; }
  .auth-art.koi-art { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; width: 100%; padding: 0 4px; }
  .koi-copy { padding-left: 2px; }
  .koi-copy h1 { font-size: 23px; margin-bottom: 8px; }
  .koi-copy p { font-size: 11px; }
  .auth-art.koi-art img { margin-top: 0; max-height: 192px; }
  .shell { display: block; padding: 0; }
  .sidebar { display: none; }
  .topbar { height: 68px; padding: 0 18px; }
  .breadcrumb { padding: 7px 10px; font-size: 10px; }
  .user-entry { padding: 3px; font-size: 0; }
  .content { padding: 16px 18px 120px; }
  .heading h1 { font-size: 25px; }
  .dashboard .heading { margin-bottom: 22px; }
  .bento-grid { gap: 18px; }
  .usage-card { min-height: auto; padding: 24px 20px; }
  .usage-center { grid-template-columns: 175px 1fr; gap: 12px; padding: 25px 0; }
  .usage-orbit { width: 175px; height: 175px; }
  .orbit-value strong { font-size: 33px; }
  .orbit-value span { font-size: 10px; }
  .usage-details { gap: 20px; }
  .usage-details strong { font-size: 19px; }
  .usage-details small { font-size: 11px; }
  .usage-footer strong { font-size: 12px; }
  .usage-footer .btn { padding: 10px 13px; }
  .subscription-card, .bento-metrics { grid-column: 1 / -1; }
  .subscription-card { padding: 22px; }
  .subscription-card .subscription-actions { grid-template-columns: 1fr auto; }
  .bento-metrics { gap: 14px; }
  .bento-metrics .metric { padding: 17px 19px; }
  .bento-metrics .metric-top svg { display: block; }
  .traffic-card, .announcement-card { padding: 22px; }
  .announcement-card .announcement-row { flex-direction: column; align-items: start; gap: 3px; }
  .mobile-nav { left: 14px; right: 14px; bottom: 12px; border: 1px solid var(--color-border); border-radius: 22px; background: var(--color-glass); box-shadow: var(--shadow-raised); }
  .preview { right: 18px; bottom: 96px; }
  .auth .card { padding: 28px 24px; }
  .public-header .brand { flex-direction: row; }
}
@media (hover: none), (prefers-reduced-motion: reduce) {
  .card[data-tilt] { transform: none !important; }
}
@media (prefers-reduced-motion: reduce) {
  .btn:hover, .btn:active, .nav a:hover { transform: none; }
  .ripple { display: none; }
}
@supports not (backdrop-filter: blur(1px)) {
  .card, .sidebar, dialog, .mobile-nav { background: var(--color-bg); }
}