/* 喵拾壹 · Aurora 极光渐变（B 站式布局 · 只保留五分类） */
:root {
  --font-display: "Syne", "Fredoka", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Work Sans", "Nunito", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --bg: #0B1026;
  --bg-2: #0E1430;
  --surface: rgba(255, 255, 255, 0.07);
  --surface-2: rgba(255, 255, 255, 0.05);
  --glass: rgba(255, 255, 255, 0.08);
  --ink: #F0F3FF;
  --ink-2: #C7CFF2;
  --muted: #8B96C8;
  --line: rgba(255, 255, 255, 0.14);
  --accent: #7CF5C4;
  --accent-2: #A78BFA;
  --accent-3: #5EEAD4;
  --pink: #F472B6;
  --on-accent: #0B1026;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 16px 40px -16px rgba(0, 0, 0, 0.7);
  --shadow-2: 0 8px 24px -12px rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
body {
  overflow-x: clip;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  min-width: 0;
  position: relative;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(45% 35% at 18% 12%, rgba(124, 245, 196, 0.18), transparent 65%),
    radial-gradient(50% 40% at 82% 18%, rgba(167, 139, 250, 0.2), transparent 65%),
    radial-gradient(55% 45% at 60% 85%, rgba(94, 234, 212, 0.14), transparent 70%),
    linear-gradient(180deg, #0B1026, #0A0F28);
}

::selection { background: var(--accent); color: var(--on-accent); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.14;
  overflow-wrap: anywhere;
  min-width: 0;
}
button { font-family: var(--font-body); }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: inherit; }
.mono { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; }

/* ================= 顶栏（B 站式：logo + 居中搜索 + 登录） ================= */
.topnav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(11, 16, 38, 0.82);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.topnav__inner {
  max-width: 1320px;
  margin-inline: auto;
  padding: 0.8rem clamp(1rem, 3vw, 1.6rem);
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.logo__mark {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 0.95rem;
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 0 18px rgba(124, 245, 196, 0.5);
}
.searchbox {
  flex: 1;
  max-width: 520px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 44px;
  padding: 0 0.4rem 0 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  transition: border-color 180ms, box-shadow 180ms;
}
.searchbox:focus-within {
  border-color: rgba(124, 245, 196, 0.7);
  box-shadow: 0 0 0 3px rgba(124, 245, 196, 0.15);
}
.searchbox__input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
}
.searchbox__input::placeholder { color: var(--muted); }
.searchbox__input:focus-visible { outline: none; }
.searchbox__btn {
  height: 36px;
  padding: 0 1.1rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: var(--on-accent);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 140ms, box-shadow 140ms;
}
.searchbox__btn:hover { transform: translateY(-1px); box-shadow: 0 8px 20px -8px rgba(124, 245, 196, 0.7); }
.searchbox__btn:active { transform: translateY(1px); }
.topnav__actions { display: flex; align-items: center; gap: 0.8rem; }
.login-btn {
  height: 40px;
  padding: 0 1.2rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 245, 196, 0.5);
  background: transparent;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 160ms, color 160ms;
}
.login-btn:hover { background: var(--accent); color: var(--on-accent); }
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-2), var(--pink));
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
}

/* ================= 分类导航（只保留五分类） ================= */
.subnav {
  max-width: 1320px;
  margin-inline: auto;
  padding: 0.4rem clamp(1rem, 3vw, 1.6rem) 0.7rem;
  display: flex;
  gap: 0.3rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.subnav::-webkit-scrollbar { display: none; }
.tab {
  height: 40px;
  padding: 0 1.1rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: color 160ms, background-color 160ms;
}
.tab:hover { color: var(--ink); background: rgba(255, 255, 255, 0.06); }
.tab[aria-current="true"] {
  color: var(--accent);
  background: rgba(124, 245, 196, 0.12);
}
.tab[aria-current="true"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 18px;
  height: 3px;
  border-radius: 99px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

/* ================= 主布局 ================= */
.layout {
  max-width: 1320px;
  margin-inline: auto;
  padding: 1.2rem clamp(1rem, 3vw, 1.6rem) 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 1.4rem;
  align-items: start;
}
.layout__main { min-width: 0; }
.layout__side { display: grid; gap: 1.2rem; position: sticky; top: 118px; }

/* ================= 轮播横幅 ================= */
.banner {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow);
  background: var(--bg-2);
}
.banner__track {
  display: flex;
  transition: transform 600ms var(--ease);
}
.banner__slide {
  flex: 0 0 100%;
  min-width: 0;
  aspect-ratio: 16 / 6.4;
  padding: clamp(1.4rem, 4vw, 3rem);
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(80% 120% at 85% 10%, rgba(167, 139, 250, 0.5), transparent 60%),
    radial-gradient(70% 120% at 10% 90%, rgba(124, 245, 196, 0.35), transparent 60%),
    linear-gradient(135deg, #141B3F, #1B1440);
}
.banner__slide:nth-child(2) { background: radial-gradient(80% 120% at 85% 10%, rgba(94, 234, 212, 0.5), transparent 60%), radial-gradient(70% 120% at 10% 90%, rgba(244, 114, 182, 0.4), transparent 60%), linear-gradient(135deg, #0F2340, #241038); }
.banner__slide:nth-child(3) { background: radial-gradient(80% 120% at 85% 10%, rgba(124, 245, 196, 0.5), transparent 60%), radial-gradient(70% 120% at 10% 90%, rgba(167, 139, 250, 0.45), transparent 60%), linear-gradient(135deg, #0E2E2A, #161241); }
.banner__slide:nth-child(4) { background: radial-gradient(80% 120% at 85% 10%, rgba(244, 114, 182, 0.45), transparent 60%), radial-gradient(70% 120% at 10% 90%, rgba(94, 234, 212, 0.4), transparent 60%), linear-gradient(135deg, #26113A, #0F2334); }
.banner__glyph {
  position: absolute;
  right: 4%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(5rem, 14vw, 11rem);
  line-height: 1;
  color: rgba(255, 255, 255, 0.16);
  text-shadow: 0 0 60px rgba(124, 245, 196, 0.35);
  user-select: none;
  pointer-events: none;
}
.banner__body { position: relative; z-index: 2; max-width: 60%; }
.banner__tag { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.3rem 0.8rem; border-radius: 999px; background: rgba(124, 245, 196, 0.15); border: 1px solid rgba(124, 245, 196, 0.4); color: var(--accent); font-size: 0.75rem; font-weight: 700; }
.banner__title { margin-top: 0.7rem; font-size: clamp(1.5rem, 3.4vw, 2.6rem); text-shadow: 0 2px 24px rgba(0, 0, 0, 0.5); }
.banner__desc { margin-top: 0.5rem; color: rgba(240, 243, 255, 0.8); font-size: 0.95rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.banner__btns { display: flex; gap: 0.7rem; margin-top: 1.1rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 140ms, box-shadow 140ms, background-color 160ms;
}
.btn--primary { background: linear-gradient(135deg, var(--accent), var(--accent-3)); color: var(--on-accent); box-shadow: 0 10px 26px -10px rgba(124, 245, 196, 0.7); }
.btn--primary:hover { transform: translateY(-2px); }
.btn--ghost { background: rgba(255, 255, 255, 0.1); color: var(--ink); border-color: rgba(255, 255, 255, 0.25); }
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.btn__arrow { display: inline-block; transition: transform 160ms var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }
.banner__nav {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 3;
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.banner__arrow {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(11, 16, 38, 0.5);
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  display: grid;
  place-items: center;
  transition: background-color 160ms, transform 140ms;
}
.banner__arrow:hover { background: var(--accent); color: var(--on-accent); }
.banner__dots { display: flex; gap: 0.35rem; }
.banner__dot {
  width: 8px; height: 8px;
  border-radius: 99px;
  border: 0;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  padding: 0;
  transition: width 200ms, background-color 200ms;
}
.banner__dot[aria-current="true"] { width: 22px; background: var(--accent); }

/* ================= 区块 ================= */
.section { margin-top: 2.2rem; }
.section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section__title { font-size: 1.35rem; display: inline-flex; align-items: center; gap: 0.6rem; }
.section__title::before { content: ""; width: 4px; height: 1.1em; border-radius: 99px; background: linear-gradient(180deg, var(--accent), var(--accent-2)); box-shadow: 0 0 12px rgba(124, 245, 196, 0.6); }
.section__more { color: var(--muted); font-size: 0.85rem; cursor: pointer; white-space: nowrap; }
.section__more:hover { color: var(--accent); }
.cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1.1rem;
}
.card { min-width: 0; cursor: pointer; }
.card__thumb {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(120% 90% at 20% 0%, rgba(124, 245, 196, 0.22), transparent 55%),
    linear-gradient(160deg, #151C42, #10142E);
  transition: transform 200ms var(--ease), border-color 200ms, box-shadow 200ms;
}
.card--landscape .card__thumb { aspect-ratio: 16 / 10; }
.card__thumb:hover { transform: translateY(-4px); border-color: rgba(124, 245, 196, 0.7); box-shadow: 0 18px 40px -18px rgba(124, 245, 196, 0.35); }
.card__glyph {
  position: absolute;
  left: 50%;
  top: 44%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  line-height: 1;
  color: rgba(240, 243, 255, 0.75);
  text-shadow: 0 0 24px rgba(167, 139, 250, 0.6);
}
.card__cat {
  position: absolute;
  top: 0.55rem;
  left: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: #fff;
  background: rgba(11, 16, 38, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.card__play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(11, 16, 38, 0.45);
  opacity: 0;
  transition: opacity 180ms;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.card:hover .card__play { opacity: 1; }
.card__play span {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 1rem;
  box-shadow: 0 0 24px rgba(124, 245, 196, 0.6);
}
.card__body { padding: 0.5rem 0.15rem 0; }
.card__title {
  font-size: 0.95rem;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 160ms;
}
.card:hover .card__title { color: var(--accent); }
.card__meta { margin-top: 0.2rem; font-size: 0.75rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ================= 侧栏 ================= */
.panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  padding: 1.1rem;
}
.panel__title { font-size: 1.05rem; margin-bottom: 0.8rem; }
.rank-list { display: grid; gap: 0.4rem; }
.rank-item {
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: center;
  padding: 0.45rem 0.5rem;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 140ms;
}
.rank-item:hover { background: rgba(255, 255, 255, 0.07); }
.rank-item__no {
  font-family: var(--font-display);
  font-weight: 800;
  text-align: center;
  color: var(--muted);
}
.rank-item:nth-child(1) .rank-item__no { color: var(--accent); }
.rank-item:nth-child(2) .rank-item__no { color: var(--accent-2); }
.rank-item:nth-child(3) .rank-item__no { color: var(--pink); }
.rank-item__body { min-width: 0; }
.rank-item__title { font-size: 0.85rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-item__sub { font-size: 0.7rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.side-note { font-size: 0.85rem; color: var(--ink-2); line-height: 1.7; }
.side-note strong { color: var(--accent); }
.side-note .mono { color: var(--muted); }

/* ================= 弹窗 ================= */
.modal, .search-dialog {
  border: 0;
  padding: 0;
  margin: auto;
  width: min(680px, calc(100vw - 2rem));
  border-radius: var(--radius);
  background: rgba(19, 25, 55, 0.96);
  color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.8);
  max-height: 86vh;
  overflow: hidden;
}
.search-dialog { width: min(560px, calc(100vw - 2rem)); }
.modal::backdrop, .search-dialog::backdrop { background: rgba(6, 8, 20, 0.7); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.modal__body { overflow-y: auto; max-height: 86vh; padding: 1.6rem; }
.modal__close {
  position: absolute;
  top: 0.8rem;
  right: 0.8rem;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 2;
}
.modal__title { font-size: 1.6rem; }
.modal__meta { margin-top: 0.4rem; color: var(--muted); font-size: 0.85rem; }
.modal__desc { margin-top: 1rem; color: var(--ink-2); }
.modal__actions { display: flex; gap: 0.7rem; margin-top: 1.3rem; flex-wrap: wrap; }
.stage {
  margin-top: 1.3rem;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: #070A18;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.stage::after { content: ""; position: absolute; inset: 0; background: radial-gradient(60% 50% at 50% 0%, rgba(124, 245, 196, 0.16), transparent 65%); pointer-events: none; }
.stage__play {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: var(--on-accent);
  display: grid;
  place-items: center;
  font-size: 1.3rem;
  box-shadow: 0 0 30px rgba(124, 245, 196, 0.5);
}
.stage__label { position: absolute; left: 1rem; bottom: 0.8rem; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.12em; color: rgba(255, 255, 255, 0.6); }

.search-dialog__field { display: flex; align-items: center; gap: 0.7rem; padding: 0.9rem 1.1rem; border-bottom: 1px solid rgba(255, 255, 255, 0.12); }
.search-dialog__input { flex: 1; min-width: 0; height: 42px; border: 0; background: transparent; color: var(--ink); font-family: var(--font-body); font-size: 1rem; }
.search-dialog__input:focus-visible { outline: none; }
.search-dialog__results { overflow-y: auto; max-height: 55vh; padding: 0.5rem; }
.search-dialog__group { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); padding: 0.6rem 0.7rem 0.3rem; }
.search-dialog__item { display: flex; align-items: center; gap: 0.8rem; width: 100%; padding: 0.5rem 0.7rem; border: 0; border-radius: 10px; background: transparent; color: var(--ink); font-size: 0.95rem; text-align: start; cursor: pointer; }
.search-dialog__item.is-active { background: rgba(255, 255, 255, 0.08); }
.search-dialog__item mark { background: transparent; color: var(--accent); font-weight: 700; }
.search-dialog__empty { padding: 2rem 1rem; text-align: center; color: var(--muted); display: grid; gap: 0.4rem; justify-items: center; }

/* ================= 页脚 ================= */
.foot {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(8, 10, 24, 0.7);
  margin-top: 2rem;
}
.foot__inner {
  max-width: 1320px;
  margin-inline: auto;
  padding: 1.6rem clamp(1rem, 3vw, 1.6rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.6rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.foot__brand { font-family: var(--font-display); font-weight: 800; color: var(--ink); font-size: 1.05rem; margin-right: auto; }
.foot a:hover { color: var(--accent); }

/* ================= 响应式 ================= */
@media (max-width: 1080px) {
  .layout { grid-template-columns: 1fr; }
  .layout__side { position: static; grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .searchbox { max-width: none; }
  .searchbox__btn { padding: 0 0.9rem; }
  .topnav__actions .login-btn { display: none; }
  .banner__slide { aspect-ratio: 16 / 9; }
  .banner__body { max-width: 82%; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layout__side { grid-template-columns: 1fr; }
  .logo { font-size: 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .banner__track { transition: none; }
}