/* ============================================================================
   NEXUS · 版面与页面
   导航 / 首页 / 详情 / 播放器 / 集合页 / 设置 / 品牌页 / 搜索 / 启动
   ========================================================================== */

/* ================================================================ 导航 */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-nav);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding-inline: var(--gutter);
  transition: background var(--dur-3) var(--ease-enter),
              border-color var(--dur-3) var(--ease-enter),
              backdrop-filter var(--dur-3) linear;
  border-bottom: var(--hair) solid transparent;
}
.nav.is-scrolled,
.nav.is-solid {
  background: var(--nav-bg-scrolled);
  backdrop-filter: blur(var(--nav-blur)) saturate(1.1);
  -webkit-backdrop-filter: blur(var(--nav-blur)) saturate(1.1);
  border-bottom-color: var(--line);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: none;
  color: var(--text);
  transition: color var(--dur-2) var(--ease-enter);
}
.nav__mark { width: 27px; height: 27px; flex: none; color: var(--text); }
.nav__mark path:last-child { fill: var(--accent); transition: fill var(--dur-3) linear; }
.nav__word {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  line-height: 1;
  padding-right: 2px;
}
.nav__brand:hover .nav__word { color: var(--text); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline: auto;
}
.nav__link {
  position: relative;
  height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 var(--sp-4);
  border-radius: var(--r-full);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
  transition: color var(--dur-1) var(--ease-press), background var(--dur-2) var(--ease-enter);
}
.nav__link:hover { color: var(--text); background: color-mix(in srgb, var(--surface-3) 60%, transparent); }
.nav__link[aria-current="page"] { color: var(--text); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 1px;
  width: 4px; height: 4px;
  translate: -50% 0;
  border-radius: 50%;
  background: var(--accent);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: none;
}

.nav__search {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  height: 38px;
  padding: 0 var(--sp-2) 0 var(--sp-4);
  margin-right: var(--sp-1);
  border-radius: var(--r-full);
  border: var(--hair) solid var(--line);
  background: color-mix(in srgb, var(--surface-2) 62%, transparent);
  color: var(--text-3);
  font-size: var(--fs-xs);
  transition: color var(--dur-1) var(--ease-press),
              border-color var(--dur-2) var(--ease-enter),
              background var(--dur-2) var(--ease-enter);
}
.nav__search:hover {
  color: var(--text-2);
  border-color: var(--line-strong);
  background: var(--surface-2);
}
.nav__search svg { width: 15px; height: 15px; }
.nav__kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 3px 6px;
  border-radius: 5px;
  border: var(--hair) solid var(--line);
  color: var(--text-3);
  background: var(--surface-1);
}

.nav__burger { display: none; }

/* 移动端底部标签栏 */
.tabbar { display: none; }

/* ================================================================ 主区域 */
.page {
  position: relative;
  z-index: var(--z-content);
  min-height: 100svh;
  padding-bottom: var(--sp-11);
}

.view {
  animation: view-in 420ms var(--ease-enter) both;
}
@keyframes view-in {
  from { opacity: 0; transform: translateY(10px); }
}

/* ================================================================ 首页 Hero */
.hero {
  position: relative;
  min-height: min(94svh, 940px);
  display: grid;
  align-content: end;
  padding-block: calc(var(--nav-h) + 64px) var(--sp-10);
  overflow: hidden;
  isolation: isolate;
}
/* 浅色主题：Hero 与启动序列是「暗场」，保留深色语义
   （浅底上摊开深色游戏画面只会变成一片灰雾）。 */
[data-theme="light"] .hero,
[data-theme="light"] .launch,
html:not([data-theme="dark"]):not([data-theme="light"]) .hero,
html:not([data-theme="dark"]):not([data-theme="light"]) .launch {
  --bg: #080a0c;
  --surface-1: #101419;
  --surface-2: #14191f;
  --surface-3: #181e24;
  --text: #e8ecef;
  --text-2: #9aa5af;
  --text-3: #6d7883;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.20);
  --accent-line: rgba(199, 255, 82, 0.5);
  --scrim: rgba(8, 10, 12, 0.72);
  --scrim-strong: rgba(6, 8, 10, 0.9);
  --shadow-2: 0 18px 46px rgba(0, 0, 0, 0.45);
  color: var(--text);
  isolation: isolate;
}
[data-theme="light"] .hero__art,
html:not([data-theme="dark"]):not([data-theme="light"]) .hero__art {
  opacity: 0.6;
}

/* 浅色主题下导航压在暗场 Hero 上，需要自己的浅色玻璃底 */
[data-theme="light"] .nav:not(.is-scrolled),
html:not([data-theme="dark"]):not([data-theme="light"]) .nav:not(.is-scrolled) {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(115%);
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  border-bottom-color: var(--line);
}

.hero__bg {
  position: absolute;
  inset: -10% -2% -4%;
  z-index: -1;
  overflow: hidden;
}
.hero__art {
  position: absolute;
  inset: 0;
  background-image: var(--hero-img, none);
  background-size: cover;
  background-position: 66% 40%;
  opacity: 0.55;
  transform: scale(1.04) translate3d(0, var(--hero-shift, 0px), 0);
  transition: opacity 700ms var(--ease-enter);
  filter: brightness(var(--img-bright)) saturate(var(--img-sat));
}
.hero__art.is-out { opacity: 0; }
.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--bg) 2%, color-mix(in srgb, var(--bg) 90%, transparent) 34%,
                    color-mix(in srgb, var(--bg) 34%, transparent) 68%, transparent 92%),
    radial-gradient(90% 78% at 74% 34%, transparent 0%, color-mix(in srgb, var(--bg) 42%, transparent) 100%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg) 72%, transparent) 0%, transparent 20%,
                    color-mix(in srgb, var(--bg) 58%, transparent) 74%, var(--bg) 100%);
}
.hero__glowline {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 30%, var(--line-strong) 70%, transparent);
}

.hero__inner { display: grid; gap: var(--sp-6); max-width: 940px; }

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--text-2);
}
.hero__eyebrow .rule {
  width: 34px; height: 1px;
  background: var(--accent-line);
}

.hero__title {
  font-size: var(--fs-display);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 600;
  text-wrap: balance;
}
.hero__title em {
  font-style: normal;
  color: var(--accent);
}
.hero__desc {
  max-width: 52ch;
  color: var(--text-2);
  font-size: 1rem;
  line-height: 1.7;
}
.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2) var(--sp-3);
  flex-wrap: wrap;
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-top: var(--sp-2);
}

/* 精选切换 */
.hero__switch {
  position: absolute;
  right: var(--gutter);
  bottom: var(--sp-10);
  display: grid;
  gap: var(--sp-3);
  justify-items: end;
}
.hero__dots { display: flex; gap: 8px; }
.hero__dot {
  width: 26px; height: 3px;
  border-radius: 2px;
  background: var(--line-strong);
  transition: background var(--dur-2) var(--ease-enter), width var(--dur-3) var(--ease-enter);
}
.hero__dot[aria-selected="true"] { background: var(--accent); width: 44px; }
.hero__counter {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--text-3);
}

/* 分阶段入场 */
.stage { opacity: 0; }
.stage.is-in { animation: stage-up 620ms var(--ease-enter) both; }
@keyframes stage-up {
  from { opacity: 0; transform: translateY(16px); filter: blur(3px); }
  to { opacity: 1; transform: none; filter: none; }
}

/* 入场错峰：由 JS 通过 --d 设置 */
.stage.is-in { animation-delay: var(--d, 0ms); }

/* ================================================================ 首页区块 */
.home-sections { padding-top: var(--sp-9); }

.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-6);
}
.filter-bar__spacer { flex: 1 1 auto; }
.filter-count {
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  color: var(--text-3);
  letter-spacing: 0.1em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-5) var(--sp-5);
}
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
}

/* ================================================================ 详情页 */
.detail { padding-top: calc(var(--nav-h) + var(--sp-6)); }

.backlink {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  height: 34px;
  padding-right: var(--sp-3);
  border-radius: var(--r-full);
  color: var(--text-2);
  font-size: var(--fs-sm);
  transition: color var(--dur-1) var(--ease-press), gap var(--dur-2) var(--ease-enter);
}
.backlink:hover { color: var(--text); gap: var(--sp-3); }
.backlink svg { width: 16px; height: 16px; }

.detail__head {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--sp-8);
  align-items: start;
  margin-top: var(--sp-5);
}
.detail__cover {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  border: var(--hair) solid var(--line);
  box-shadow: var(--shadow-3);
  aspect-ratio: 16 / 10;
}
.detail__cover img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(var(--img-bright)) saturate(var(--img-sat));
}
.detail__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), inset 0 0 90px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}
.detail__col { display: grid; gap: var(--sp-5); }
.detail__title {
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  font-weight: 600;
}
.detail__sub {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  align-items: center;
}
.detail__desc { color: var(--text-2); font-size: var(--fs-body); max-width: 56ch; }
.detail__actions { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

.spec {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
  border: var(--hair) solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.spec__cell {
  background: color-mix(in srgb, var(--surface-2) 78%, transparent);
  padding: var(--sp-4);
  display: grid;
  gap: 4px;
}
.spec__k {
  font-size: var(--fs-2xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}
.spec__v { font-size: var(--fs-sm); font-weight: 600; }

.detail__body {
  margin-top: var(--sp-9);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--sp-8);
  align-items: start;
}
.prose { display: grid; gap: var(--sp-4); }
.prose h2 {
  font-size: var(--fs-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
}
.prose ul { display: grid; gap: var(--sp-3); }
.prose li {
  position: relative;
  padding-left: var(--sp-5);
  color: var(--text-2);
  font-size: var(--fs-sm);
  line-height: 1.65;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 2px; top: 9px;
  width: 8px; height: 1px;
  background: var(--accent-line);
}
.prose li b { color: var(--text); font-weight: 600; }

.keys {
  display: grid;
  gap: var(--sp-2);
  padding: var(--sp-5);
  border-radius: var(--r-md);
  border: var(--hair) solid var(--line);
  background: linear-gradient(180deg, var(--card-top), var(--card-bottom));
}
.keys__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-block: 7px;
  border-bottom: var(--hair) solid var(--line);
  font-size: var(--fs-sm);
  color: var(--text-2);
}
.keys__row:last-child { border-bottom: 0; }
.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 6px;
  border: var(--hair) solid var(--line-strong);
  background: var(--surface-1);
  color: var(--text);
  box-shadow: 0 1px 0 var(--line-strong);
  white-space: nowrap;
}

/* ================================================================ 播放器 */
.player-view {
  position: fixed;
  inset: 0;
  z-index: var(--z-content);
  background: #000;
  display: grid;
  grid-template-rows: auto 1fr;
  animation: player-in 360ms var(--ease-enter) both;
}
@keyframes player-in { from { opacity: 0; } }

/* 游戏内：Toast 上移，别压住游戏自己的底部控件 */
body.is-playing .toast-stack { bottom: calc(72px + env(safe-area-inset-bottom, 0px)); }

.player-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 10px var(--sp-4);
  background: linear-gradient(180deg, rgba(4, 5, 6, 0.96), rgba(4, 5, 6, 0.72));
  border-bottom: var(--hair) solid rgba(232, 236, 239, 0.08);
  color: #e8ecef;
  min-height: 56px;
}
.player-bar__back {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 36px;
  padding: 0 14px 0 10px;
  border-radius: var(--r-full);
  border: var(--hair) solid rgba(232, 236, 239, 0.14);
  background: rgba(232, 236, 239, 0.05);
  font-size: var(--fs-xs);
  font-weight: 600;
  transition: background var(--dur-2) var(--ease-enter), border-color var(--dur-2) var(--ease-enter);
}
.player-bar__back:hover { background: rgba(232, 236, 239, 0.12); border-color: rgba(232, 236, 239, 0.26); }
.player-bar__back svg { width: 15px; height: 15px; }
.player-bar__title {
  display: grid;
  gap: 1px;
  min-width: 0;
  overflow: hidden;
}
.player-bar__title b {
  font-size: var(--fs-sm);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player-bar__back-text { white-space: nowrap; }
.player-bar__title span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: rgba(232, 236, 239, 0.5);
  text-transform: uppercase;
}
.player-bar__spacer { flex: 1; }
.player-bar__btn {
  display: inline-grid;
  place-items: center;
  height: 36px; min-width: 36px;
  padding: 0 10px;
  border-radius: var(--r-full);
  color: rgba(232, 236, 239, 0.72);
  border: var(--hair) solid transparent;
  transition: color var(--dur-1) var(--ease-press), background var(--dur-2) var(--ease-enter);
}
.player-bar__btn:hover { color: #fff; background: rgba(232, 236, 239, 0.1); }
.player-bar__btn svg { width: 17px; height: 17px; }

.player-stage {
  position: relative;
  display: grid;
  place-items: stretch;
  overflow: hidden;
  background: #05070a;
}
.player-frame {
  width: 100%;
  height: 100%;
  border: 0;
  background: #05070a;
  opacity: 0;
  transition: opacity var(--dur-4) var(--ease-enter);
}
.player-frame.is-ready { opacity: 1; }

.player-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: var(--sp-4);
  text-align: center;
  padding: var(--sp-6);
  color: var(--text-2);
  background: radial-gradient(60% 60% at 50% 45%, var(--surface-1) 0%, #05070a 78%);
  transition: opacity var(--dur-3) var(--ease-enter);
}
.player-status.is-hidden { opacity: 0; pointer-events: none; }
.player-status h2 { font-size: var(--fs-h2); color: var(--text); font-weight: 600; }
.player-status p { font-size: var(--fs-sm); max-width: 46ch; }
.player-status__spin {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  border-top-color: var(--accent);
  animation: spin 900ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ================================================================ 集合页 */
.collection { padding-top: calc(var(--nav-h) + var(--sp-7)); }
.collection__head { display: grid; gap: var(--sp-4); margin-bottom: var(--sp-7); }
.collection__title {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.03em;
  font-weight: 600;
}
.collection__desc { color: var(--text-2); max-width: 56ch; }

/* ================================================================ 设置页 */
.settings { padding-top: calc(var(--nav-h) + var(--sp-7)); max-width: 780px; }
.settings__group { display: grid; gap: var(--sp-2); margin-top: var(--sp-7); }
.settings__group > h2 {
  font-size: var(--fs-2xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-3);
  padding-bottom: var(--sp-2);
}
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding: var(--sp-4) var(--sp-5);
  border: var(--hair) solid var(--line);
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--surface-2) 66%, transparent);
}
.row__main { display: grid; gap: 3px; }
.row__label { font-size: var(--fs-sm); font-weight: 600; }
.row__hint { font-size: var(--fs-xs); color: var(--text-3); }
.row__ctl { flex: none; }

.switch {
  position: relative;
  width: 46px; height: 27px;
  border-radius: var(--r-full);
  background: var(--surface-4);
  border: var(--hair) solid var(--line-strong);
  transition: background var(--dur-2) var(--ease-enter), border-color var(--dur-2) var(--ease-enter);
}
.switch::after {
  content: "";
  position: absolute;
  top: 3px; left: 3px;
  width: 19px; height: 19px;
  border-radius: 50%;
  background: var(--text-2);
  transition: transform var(--dur-3) var(--ease-enter), background var(--dur-2) var(--ease-enter);
}
.switch[aria-checked="true"] { background: var(--accent); border-color: transparent; }
.switch[aria-checked="true"]::after { transform: translateX(19px); background: var(--text-on-accent); }

/* ================================================================ 品牌页 */
.studio { padding-top: calc(var(--nav-h) + var(--sp-7)); }
.studio__head { display: grid; gap: var(--sp-5); max-width: 780px; }
.studio__title {
  font-size: clamp(2.1rem, 4.4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 600;
}
.brand-block {
  margin-top: var(--sp-9);
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: var(--sp-7);
  align-items: center;
  padding-top: var(--sp-8);
  border-top: var(--hair) solid var(--line);
}
.brand-block__stage {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: var(--r-lg);
  border: var(--hair) solid var(--line);
  background:
    radial-gradient(70% 70% at 50% 40%, var(--accent-soft) 0%, transparent 70%),
    linear-gradient(180deg, var(--surface-2), var(--surface-1));
  position: relative;
  overflow: hidden;
}
.brand-block__stage svg { width: 58%; height: 58%; color: var(--text); }
.brand-block__stage[data-variant="light"] { background: #eff1ec; color: #12171a; }
.brand-block__stage[data-variant="light"] svg { color: #12171a; }
.brand-block__stage[data-variant="mono"] svg { color: var(--text); }
.brand-block__stage[data-variant="accent"] svg { color: var(--text); }
.brand-block__info { display: grid; gap: var(--sp-4); }
.brand-block__name { font-size: var(--fs-h2); font-weight: 600; letter-spacing: var(--ls-tight); }
.brand-block__meta { display: flex; gap: var(--sp-2); flex-wrap: wrap; }
.asset-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: var(--sp-2);
}
.asset-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 10px 14px;
  border-radius: var(--r-sm);
  border: var(--hair) solid var(--line);
  background: var(--surface-1);
  font-size: var(--fs-xs);
  color: var(--text-2);
  transition: color var(--dur-1) var(--ease-press), border-color var(--dur-2) var(--ease-enter),
              background var(--dur-2) var(--ease-enter);
}
.asset-link:hover { color: var(--text); border-color: var(--line-accent); background: var(--surface-2); }
.asset-link svg { width: 13px; height: 13px; flex: none; opacity: 0.6; }

/* ================================================================ 搜索浮层 */
.search-layer {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  align-content: start;
  justify-items: center;
  padding-top: max(10vh, 78px);
  background: var(--scrim-strong);
  backdrop-filter: blur(16px) saturate(0.9);
  -webkit-backdrop-filter: blur(16px) saturate(0.9);
  animation: fade-in 220ms var(--ease-enter) both;
}
@keyframes fade-in { from { opacity: 0; } }

.search-panel {
  width: min(760px, calc(100vw - 2 * var(--gutter)));
  border-radius: var(--r-lg);
  border: var(--hair) solid var(--line-strong);
  background: color-mix(in srgb, var(--surface-2) 96%, transparent);
  box-shadow: var(--shadow-3);
  overflow: hidden;
  transform-origin: var(--ox, 50%) var(--oy, 0%);
  animation: search-open 300ms var(--ease-enter) both;
}
@keyframes search-open {
  from { opacity: 0; transform: scale(0.97) translateY(-8px); }
}

.search-field {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0 var(--sp-5);
  height: 62px;
  border-bottom: var(--hair) solid var(--line);
}
.search-field svg { width: 18px; height: 18px; color: var(--text-3); flex: none; }
.search-field input {
  flex: 1;
  min-width: 0;
  height: 100%;
  border: 0;
  background: none;
  font-size: 1rem;
  letter-spacing: 0.01em;
  outline: none;
}
.search-field input::placeholder { color: var(--text-3); }
.search-esc {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--text-3);
  border: var(--hair) solid var(--line);
  border-radius: 5px;
  padding: 4px 7px;
}

.search-results {
  max-height: min(52vh, 460px);
  overflow-y: auto;
  padding: var(--sp-2);
  overscroll-behavior: contain;
}
.sr-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  width: 100%;
  padding: var(--sp-3);
  border-radius: var(--r-sm);
  text-align: left;
  transition: background var(--dur-1) var(--ease-press);
}
.sr-item[aria-selected="true"] { background: var(--surface-4); }
.sr-item__art {
  width: 62px; height: 38px;
  border-radius: 6px;
  object-fit: cover;
  flex: none;
  border: var(--hair) solid var(--line);
}
.sr-item__main { display: grid; gap: 2px; min-width: 0; }
.sr-item__name { font-size: var(--fs-sm); font-weight: 600; }
.sr-item__meta { font-size: var(--fs-2xs); color: var(--text-3); letter-spacing: 0.06em; }
.sr-item__go { margin-left: auto; opacity: 0; color: var(--accent); }
.sr-item[aria-selected="true"] .sr-item__go { opacity: 1; }
.sr-item__go svg { width: 15px; height: 15px; }

.search-empty {
  padding: var(--sp-8) var(--sp-5);
  text-align: center;
  color: var(--text-3);
  font-size: var(--fs-sm);
}
.search-foot {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: 10px var(--sp-5);
  border-top: var(--hair) solid var(--line);
  font-size: var(--fs-2xs);
  color: var(--text-3);
  letter-spacing: 0.04em;
}
.search-foot kbd {
  font-family: var(--font-mono);
  border: var(--hair) solid var(--line);
  border-radius: 4px;
  padding: 2px 5px;
  margin-right: 3px;
}

/* ================================================================ 启动动画 */
.launch {
  position: fixed;
  inset: 0;
  z-index: var(--z-launch);
  display: grid;
  place-items: center;
  background: transparent;
  pointer-events: none;
}
.launch[hidden] { display: none; }
.launch.is-active { pointer-events: auto; }

.launch__stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.launch__veil {
  position: absolute;
  inset: 0;
  /* 启动序列是一块不透明的暗场：游戏在门打开前不应透出来 */
  background: radial-gradient(120% 100% at 50% 38%, #0a0e11 0%, #050708 72%);
  opacity: 0;
  transition: opacity 260ms linear;
}
.launch.is-active .launch__veil { opacity: 1; }

/* B · 空间收敛：从卡片矩形收拢到中央 */
.launch__card {
  position: absolute;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: var(--hair) solid var(--accent-line);
  box-shadow: 0 40px 120px -40px #000, 0 0 0 1px rgba(199, 255, 82, 0.25);
  transform-origin: center;
  will-change: transform, width, height, left, top;
}
.launch__card img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.9) saturate(1.05);
}
.launch__card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 24%, rgba(6, 8, 10, 0.55) 62%, rgba(6, 8, 10, 0.92) 100%);
}
.launch__card-cap {
  position: absolute;
  left: 0; right: 0; bottom: 18px;
  padding-inline: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  opacity: 0;
  transition: opacity 300ms var(--ease-enter);
}
.launch__card-cap.is-in { opacity: 1; }
.launch__card-cap { color: #f2f5f7; }
.launch__card-cap b {
  font-size: 1.05rem; font-weight: 600; letter-spacing: var(--ls-tight);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.55);
}
.launch__card-cap span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--text-2);
  text-transform: uppercase;
}

/* C/D · 品牌揭示与门的开启 */
.launch__brand {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: var(--sp-5);
  opacity: 0;
  transition: opacity 260ms var(--ease-enter);
}
.launch__brand.is-in { opacity: 1; }
.launch__gate { width: min(30vh, 210px); height: min(30vh, 210px); color: var(--text); }
.launch__gate svg { width: 100%; height: 100%; overflow: visible; }
.launch__brand-name {
  display: grid;
  justify-items: center;
  gap: 5px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 380ms var(--ease-enter), transform 380ms var(--ease-enter);
}
.launch__brand-name.is-in { opacity: 1; transform: none; }
.launch__brand-name b { font-size: var(--fs-sm); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; }
.launch__brand-name span {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.3em;
  color: var(--text-3);
  text-transform: uppercase;
}

/* 两扇几何门板 */
.launch__doors {
  position: absolute;
  inset: 0;
  display: flex;
  pointer-events: none;
  opacity: 0;
}
.launch__doors.is-in { opacity: 1; }
.launch__door {
  position: relative;
  width: 50%;
  height: 100%;
  background:
    linear-gradient(90deg, var(--surface-2), var(--bg));
  transition: transform 620ms var(--ease-space);
  will-change: transform;
}
.launch__door--r {
  background: linear-gradient(270deg, var(--surface-2), var(--bg));
}
.launch__doors.is-open .launch__door--l { transform: translateX(-101%); }
.launch__doors.is-open .launch__door--r { transform: translateX(101%); }
.launch__door::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--accent-line), transparent);
  opacity: 0.9;
}
.launch__door--l::after { right: 0; }
.launch__door--r::after { left: 0; }

.launch__hint {
  position: absolute;
  left: 50%;
  bottom: max(28px, env(safe-area-inset-bottom));
  translate: -50% 0;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fs-2xs);
  letter-spacing: 0.12em;
  color: var(--text-3);
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 300ms linear;
}
.launch__hint.is-in { opacity: 1; }
/* 弱网时出现的一行真实状态：不是进度条，只是告诉用户"还在下载" */
.launch__wait {
  display: none;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  letter-spacing: 0.14em;
}
.launch__wait.is-in { display: inline-flex; }
.launch__wait::before {
  content: "";
  width: 14px;
  height: var(--hair);
  background: currentColor;
  opacity: 0.6;
}
.launch__skip {
  pointer-events: auto;
  padding: 6px 12px;
  border-radius: var(--r-full);
  border: var(--hair) solid var(--line-strong);
  color: var(--text-2);
  font-size: var(--fs-2xs);
  letter-spacing: 0.12em;
  transition: color var(--dur-1) var(--ease-press), border-color var(--dur-2) var(--ease-enter);
}
.launch__skip:hover { color: var(--text); border-color: var(--accent-line); }

/* ================================================================ 页脚 */
.site-foot {
  position: relative;
  z-index: var(--z-content);
  margin-top: var(--sp-11);
  padding: var(--sp-8) 0 var(--sp-9);
  border-top: var(--hair) solid var(--line);
}
.site-foot__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  flex-wrap: wrap;
}
.site-foot__brand { display: flex; align-items: center; gap: var(--sp-3); }
.site-foot__brand svg { width: 20px; height: 20px; color: var(--text-2); }
.site-foot__brand b { font-size: var(--fs-xs); letter-spacing: 0.2em; font-weight: 700; }
.site-foot__links { display: flex; gap: var(--sp-5); flex-wrap: wrap; }
.site-foot__links a {
  font-size: var(--fs-xs);
  color: var(--text-3);
  transition: color var(--dur-1) var(--ease-press);
}
.site-foot__links a:hover { color: var(--text); }
.site-foot__note { font-size: var(--fs-2xs); color: var(--text-3); letter-spacing: 0.04em; }

/* ================================================================ 响应式 */
@media (max-width: 1080px) {
  .detail__head { grid-template-columns: 1fr; gap: var(--sp-6); }
  .detail__body { grid-template-columns: 1fr; gap: var(--sp-7); }
  .brand-block { grid-template-columns: 1fr; }
  .hero__switch { display: none; }
}

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__search .nav__kbd { display: none; }
  .nav__search { padding: 0 var(--sp-3); }
  .nav__search span { display: none; }
  .nav__search { width: 40px; height: 40px; justify-content: center; padding: 0; border-radius: var(--r-full); border-color: transparent; }
  .nav__brand { margin-right: auto; }

  .tabbar {
    position: fixed;
    inset: auto 0 0;
    z-index: var(--z-nav);
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: 2px;
    padding: 6px max(8px, env(safe-area-inset-left)) calc(6px + env(safe-area-inset-bottom));
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(20px) saturate(1.1);
    -webkit-backdrop-filter: blur(20px) saturate(1.1);
    border-top: var(--hair) solid var(--line);
  }
  .tabbar__item {
    display: grid;
    justify-items: center;
    gap: 3px;
    padding: 7px 0 6px;
    border-radius: var(--r-sm);
    color: var(--text-3);
    font-size: 10px;
    letter-spacing: 0.04em;
    transition: color var(--dur-1) var(--ease-press), background var(--dur-2) var(--ease-enter);
  }
  .tabbar__item svg { width: 19px; height: 19px; }
  .tabbar__item[aria-current="page"] { color: var(--accent-text); }
  .tabbar__item:active { background: var(--surface-2); }

  .page { padding-bottom: calc(74px + env(safe-area-inset-bottom)); }
  .site-foot { margin-top: var(--sp-9); padding-bottom: calc(var(--sp-10) + 60px); }
  .hero { min-height: min(88svh, 820px); padding-block: calc(var(--nav-h) + 40px) var(--sp-8); }
  .hero__art { background-position: 58% 30%; opacity: 0.5; }
  .hero__veil {
    background:
      linear-gradient(180deg, color-mix(in srgb, var(--bg) 70%, transparent) 0%, transparent 24%, color-mix(in srgb, var(--bg) 86%, transparent) 62%, var(--bg) 100%);
  }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 auto; justify-content: center; }
  .section { padding-top: var(--sp-8); }
  .section__head { align-items: flex-start; flex-direction: column; gap: var(--sp-3); }
  .rail { grid-auto-columns: minmax(250px, 82%); }
  .detail { padding-top: calc(var(--nav-h) + var(--sp-4)); }
  .collection, .settings, .studio { padding-top: calc(var(--nav-h) + var(--sp-5)); }
  .player-bar { padding: 8px 10px; min-height: 52px; }
  .player-bar__title span { display: none; }
  .grid { gap: var(--sp-4); }
  .toast-stack { bottom: calc(84px + env(safe-area-inset-bottom)); }
}

@media (max-width: 520px) {
  :root { --gutter: 18px; --nav-h: 66px; }
  .player-bar { gap: var(--sp-2); }
  .player-bar__back { padding: 0 12px 0 8px; }
  .player-bar__back-brand { display: none; }
  .player-bar__title { flex: 1 1 0; }
  .player-bar__spacer { display: none; }
  .hero__title { font-size: clamp(2.3rem, 12vw, 3.4rem); }
  .hero__desc { font-size: 0.92rem; }
  .brand-block__stage { aspect-ratio: 4 / 3; }
  .search-layer { padding-top: 0; align-content: stretch; }
  .search-panel {
    width: 100%;
    border-radius: 0;
    border: 0;
    height: 100%;
    display: grid;
    grid-template-rows: auto 1fr auto;
  }
  .search-results { max-height: none; }
}

/* 触屏：去掉依赖 hover 的隐藏态 */
@media (hover: none) {
  .card__play { opacity: 1; transform: none; }
  .card__fav { opacity: 1; transform: none; }
  .card:hover { --lift: 0px; }
  .card:hover .card__img { transform: none; }
}

/* 横屏手机：矮视口收紧 */
@media (max-height: 520px) and (orientation: landscape) {
  .hero { min-height: auto; padding-block: calc(var(--nav-h) + 24px) var(--sp-7); }
  .hero__desc { display: none; }
}