/* Shared styles for / and /en/. */

:root {
  --accent: #FF782F;
  --accent-soft: rgba(255, 120, 47, 0.12);
  --accent-ink: #C24E14;
  --on-accent: #1D1208;
  /* Solid orange fills that carry white text (buttons, chips): a slightly deeper orange keeps white legible. */
  --accent-fill: #F0621A;
  --on-accent-fill: #FFFFFF;

  --bg: #FBF8F3;
  --bg-2: #F3EDE4;
  --surface: #FFFFFF;
  --surface-2: #F6F1EA;
  --line: rgba(29, 24, 19, 0.10);
  --text: #1D1813;
  --text-2: rgba(29, 24, 19, 0.70);
  --text-3: rgba(29, 24, 19, 0.48);
  --shadow: 0 1px 2px rgba(40, 20, 0, 0.04), 0 12px 32px rgba(60, 30, 10, 0.08);
  --shadow-lg: 0 2px 6px rgba(40, 20, 0, 0.06), 0 30px 80px rgba(60, 30, 10, 0.18);
  --glass: rgba(255, 255, 255, 0.78);

  --radius: 20px;
  --radius-sm: 12px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --accent-soft: rgba(255, 120, 47, 0.16);
  --accent-ink: #FF9557;

  --bg: #141210;
  --bg-2: #1A1714;
  --surface: #1F1B18;
  --surface-2: #28231F;
  --line: rgba(255, 240, 225, 0.09);
  --text: #F4EFE9;
  --text-2: rgba(244, 239, 233, 0.70);
  --text-3: rgba(244, 239, 233, 0.46);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 2px 8px rgba(0, 0, 0, 0.4), 0 30px 80px rgba(0, 0, 0, 0.55);
  --glass: rgba(31, 27, 24, 0.80);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
p, h1, h2, h3 { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }
/* Drop the default blue tap flash on mobile; links and buttons have their own hover/active states. */
a, button { -webkit-tap-highlight-color: transparent; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 640px) { .wrap { padding: 0 16px; } }

/* theme-dependent images */
[data-theme="dark"] .only-light, [data-theme="light"] .only-dark { display: none !important; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 52px; padding: 0 24px; border-radius: 999px;
  font-weight: 600; font-size: 16px; white-space: nowrap;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:active { transform: scale(.97); }
.btn-accent { background: var(--accent-fill); color: var(--on-accent-fill); box-shadow: 0 8px 24px rgba(240, 98, 26, .35); }
.btn-accent:hover { background: #E0561A; }
.btn-ghost { background: var(--surface); border: 1px solid var(--line); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }

.label {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 13px/1 var(--mono); letter-spacing: .08em;
  color: var(--accent-ink);
}
.label::before { content: ""; width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }

h2.title {
  margin: 12px 0 0; font-size: clamp(30px, 4.4vw, 48px); line-height: 1.15;
  font-weight: 700; letter-spacing: -0.02em;
}
.lead { margin: 14px 0 0; color: var(--text-2); font-size: 17px; max-width: 560px; }

section { padding: 120px 0 0; }
@media (max-width: 640px) { section { padding-top: 88px; } }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav-in { display: flex; align-items: center; height: 68px; gap: 8px; }
.brand img { height: 48px; width: auto; }
.nav-links { display: flex; gap: 4px; margin-left: 32px; }
.nav-links a { padding: 8px 14px; border-radius: 999px; font-size: 15px; color: var(--text-2); }
.nav-links a:hover { color: var(--text); background: var(--surface-2); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 999px; display: grid; place-items: center;
  color: var(--text-2); font-size: 15px;
}
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.lang { font-size: 14px; font-weight: 600; }
@media (max-width: 820px) { .nav-links { display: none; } }
@media (max-width: 480px) { .nav .btn-open-web { display: none; } }

/* ---------- hero ---------- */
/* The rotated cover wall bleeds past the viewport; clip it here, otherwise mobile
   browsers zoom the whole page out to fit it (body overflow-x alone doesn't stop that). */
.hero { padding: 48px 0 0; position: relative; overflow: hidden; }
@supports (overflow: clip) { .hero { overflow: visible; overflow-x: clip; } }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.kicker { font-size: 13px; color: var(--text-3); letter-spacing: .12em; }
@media (max-width: 640px) { .kicker { letter-spacing: .04em; } }
.hero h1 {
  margin: 22px 0 0;
  font-size: clamp(46px, 7.2vw, 88px);
  line-height: 1.04; letter-spacing: -0.035em; font-weight: 800;
}
.hero h1 em { display: block; margin-top: .12em; font-style: normal; font-size: .56em; font-weight: 600; letter-spacing: -0.01em; color: var(--accent); }
.hero-sub { margin: 22px 0 0; font-size: 18px; color: var(--text-2); max-width: 30em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-note { margin-top: 14px; font-size: 13px; color: var(--text-3); }
.hero-note a { color: var(--text-2); text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line); }

/* cover wall */
.wall-box { position: relative; height: 620px; }
.wall {
  position: absolute; inset: -40px -120px -40px 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  transform: rotate(-7deg);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 16%, #000 80%, transparent 100%);
          mask-image: linear-gradient(to bottom, transparent 0, #000 16%, #000 80%, transparent 100%);
  overflow: hidden;
}
.wall-col { display: flex; flex-direction: column; gap: 16px; animation: wall-up 60s linear infinite; }
.wall-col:nth-child(2) { animation-name: wall-down; animation-duration: 72s; }
.wall-col:nth-child(3) { animation-duration: 66s; }
.wall-col a { display: block; border-radius: 16px; overflow: hidden; aspect-ratio: 1; background: var(--surface-2); box-shadow: var(--shadow); }
.wall-col img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.wall-col a:hover img { transform: scale(1.06); }
.wall:hover .wall-col { animation-play-state: paused; }
@keyframes wall-up { from { transform: translateY(0); } to { transform: translateY(-50%); } }
@keyframes wall-down { from { transform: translateY(-50%); } to { transform: translateY(0); } }

.now {
  position: absolute; left: -36px; bottom: 56px; z-index: 2;
  width: min(360px, 92%);
  padding: 14px; border-radius: 22px;
  background: var(--glass); border: 1px solid var(--line);
  backdrop-filter: blur(20px) saturate(160%); -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: var(--shadow-lg);
  display: grid; grid-template-columns: 64px 1fr auto; gap: 14px; align-items: center;
  transition: transform .2s ease;
}
.now:hover { transform: translateY(-2px); }
.now-plays { font-size: 13px; color: var(--text-3); font-variant-numeric: tabular-nums; padding-right: 6px; white-space: nowrap; }
.now img { width: 64px; height: 64px; border-radius: 12px; object-fit: cover; }
.now-meta { min-width: 0; }
.now-tag { font-size: 12px; font-weight: 600; color: var(--accent-ink); }
.now-title { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.now-by { font-size: 13px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .wall-box { height: 440px; margin: 0 -24px; }
  .wall { inset: -20px -40px; grid-template-columns: repeat(4, 1fr); transform: rotate(-5deg); }
  .now { left: 16px; bottom: 24px; }
}
@media (max-width: 640px) {
  .wall-box { height: 380px; margin: 0 -16px; }
  .wall { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .wall-col { gap: 12px; }
  .hero-cta .btn { flex: 1 1 100%; }
}

/* ---------- weekly chart ---------- */
.sec-head { display: flex; align-items: end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.more { color: var(--accent-ink); font-weight: 600; font-size: 15px; display: inline-flex; gap: 8px; align-items: center; }
.more:hover { text-decoration: underline; text-underline-offset: 4px; }

.chart { display: grid; grid-template-columns: 400px 1fr; gap: 24px; margin-top: 40px; }
.top1 {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  display: flex; flex-direction: column; align-self: start;
}
.top1-cover { position: relative; aspect-ratio: 1; overflow: hidden; }
.top1-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.top1:hover .top1-cover img { transform: scale(1.03); }
.top1:hover .top1-title { color: var(--accent-ink); }
.top1-rank {
  position: absolute; left: 16px; top: 12px;
  font: 800 72px/1 var(--font); letter-spacing: -0.04em; color: #fff;
  text-shadow: 0 4px 24px rgba(0, 0, 0, .45);
}
.top1-body { padding: 20px 22px 22px; }
.top1-title { font-size: 22px; font-weight: 700; line-height: 1.3; }
.top1-by { color: var(--text-2); margin-top: 4px; }
.stats { display: flex; gap: 16px; margin-top: 14px; font-size: 14px; color: var(--text-3); }
.stats i { margin-right: 6px; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tag { font-size: 12px; padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }

.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.row {
  display: grid; grid-template-columns: 44px 52px minmax(0, 1fr) auto;
  align-items: center; gap: 16px; padding: 10px 12px; border-radius: 14px;
  transition: background .15s ease;
}
.row:hover { background: var(--surface); box-shadow: var(--shadow); }
.rank { font: 700 22px/1 var(--font); font-variant-numeric: tabular-nums; color: var(--text-3); text-align: center; letter-spacing: -0.02em; }
.list li:nth-child(-n+2) .rank { color: var(--accent-ink); }
.row img { width: 52px; height: 52px; border-radius: 10px; object-fit: cover; background: var(--surface-2); }
.row-main { min-width: 0; }
.row-title { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row:hover .row-title { color: var(--accent-ink); }
.row-by { font-size: 13px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-by .tag { font-size: 11px; padding: 1px 8px; margin-left: 6px; vertical-align: 1px; }
.row-plays { font-size: 13px; color: var(--text-3); font-variant-numeric: tabular-nums; text-align: right; }

@media (max-width: 960px) {
  .chart { grid-template-columns: 1fr; }
  .top1 { flex-direction: row; }
  .top1-cover { width: 44%; flex: none; }
  .top1-body { align-self: center; }
}
@media (max-width: 640px) {
  .top1 { flex-direction: column; }
  .top1-cover { width: 100%; }
  .top1-body { align-self: stretch; }
  .top1-cover { aspect-ratio: 4 / 3; }
  .row { grid-template-columns: 28px 48px minmax(0, 1fr); gap: 12px; padding: 8px 4px; }
  .row img { width: 48px; height: 48px; }
  .rank { font-size: 18px; }
  .row-plays { display: none; }
}

/* ---------- tags marquee ---------- */
.genres { padding-top: 96px; }
.genres-head { text-align: center; }
.genres-head h3 { margin: 0; font-size: 22px; font-weight: 700; }
.genres-head p { margin: 6px 0 0; color: var(--text-3); font-size: 14px; }
.marquee { overflow: hidden; margin-top: 28px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee + .marquee { margin-top: 14px; }
.marquee-track { display: flex; gap: 14px; width: max-content; animation: slide 50s linear infinite; }
.marquee.rev .marquee-track { animation-direction: reverse; animation-duration: 58s; }
@keyframes slide { to { transform: translateX(-50%); } }
.chip {
  flex: none; padding: 12px 22px; border-radius: 999px; font-size: 18px; font-weight: 600;
  background: var(--surface); border: 1px solid var(--line); color: var(--text-2);
}
.chip.hot { background: var(--accent-fill); border-color: transparent; color: var(--on-accent-fill); }
.chip.ink { background: var(--text); border-color: transparent; color: var(--bg); }

/* ---------- voices ---------- */
.voices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 48px; }
.voice { margin: 0; border-top: 1px solid var(--line); padding-top: 24px; display: flex; flex-direction: column; }
.voice .role { font: 600 13px/1 var(--font); letter-spacing: .08em; color: var(--accent-ink); }
.voice blockquote { margin: 18px 0 0; font-size: 20px; line-height: 1.6; font-weight: 500; flex: 1; }
.voice blockquote::before { content: "“"; display: block; font-size: 56px; line-height: .6; height: .4em; color: var(--accent); opacity: .5; }
.voice cite { display: block; margin-top: 16px; font-style: normal; font-size: 13px; color: var(--text-3); }
.voice-link { margin-top: 20px; align-self: flex-start; font-size: 14px; font-weight: 600; color: var(--text-2); display: inline-flex; gap: 8px; align-items: center; }
.voice-link:hover { color: var(--accent-ink); }
@media (max-width: 860px) { .voices { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- app ---------- */
.app-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 64px; align-items: center; margin-top: 8px; }
.features { list-style: none; padding: 0; margin: 36px 0 0; display: grid; gap: 26px; }
.features li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; }
.features .ico { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-ink); }
.features b { display: block; font-size: 17px; }
.features span { color: var(--text-2); font-size: 15px; }

.devices { position: relative; padding: 0 0 60px 0; }
.device-desktop {
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  background: var(--surface);
}
.device-phone {
  position: absolute; right: -16px; bottom: 0; width: 27%;
  border-radius: 28px; overflow: hidden; border: 6px solid #111; background: #111;
  box-shadow: var(--shadow-lg);
}

/* Screenshot slides: stacked in one grid cell and cross-faded by .shots[data-shot]. */
.device-desktop, .device-phone { display: grid; }
.device-desktop > img, .device-phone > img { grid-area: 1 / 1; opacity: 0; transition: opacity .6s ease; }
.shots[data-shot="0"] .s0, .shots[data-shot="1"] .s1, .shots[data-shot="2"] .s2 { opacity: 1; }

.shot-tabs { display: flex; justify-content: center; gap: 6px; margin-top: 20px; }
.shot-tab { position: relative; padding: 8px 18px; border-radius: 999px; font-size: 14px; color: var(--text-3); }
.shot-tab:hover { color: var(--text); }
.shot-tab[aria-selected="true"] { color: var(--text); background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); }
/* Progress line under the active tab; its animationend advances the slides (see initShots). */
.shot-tab i { position: absolute; left: 18px; right: 18px; bottom: 5px; height: 2px; border-radius: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left; }
.shot-tab[aria-selected="true"] i { animation: shot-progress 6s linear forwards; }
.shots:hover .shot-tab i, .shots.offscreen .shot-tab i { animation-play-state: paused; }
@keyframes shot-progress { to { transform: scaleX(1); } }

@media (max-width: 960px) {
  .app-grid { grid-template-columns: 1fr; gap: 40px; }
  .shots { order: -1; }
  .device-phone { right: 0; }
}

/* ---------- download ---------- */
.dl-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 24px; margin-top: 40px; }
.dl-main {
  border-radius: var(--radius); padding: 32px;
  background: #1D1813; color: #F4EFE9; border: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 22px; position: relative; overflow: hidden;
}
.dl-main::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 120, 47, .55), transparent 70%);
}
.dl-main .os { display: flex; align-items: center; gap: 14px; font-size: 15px; opacity: .75; }
.dl-main .os i { font-size: 28px; opacity: 1; }
.dl-main h3 { margin: 0; font-size: 32px; line-height: 1.2; letter-spacing: -0.02em; }
.dl-main .ver { font-size: 13px; opacity: .6; }
.dl-main .btn-accent { align-self: flex-start; box-shadow: none; }
.changes { border-top: 1px solid rgba(244, 239, 233, .14); padding-top: 20px; }
.changes b { font-size: 14px; opacity: .7; font-weight: 600; }
.changes ul { margin: 10px 0 0; padding-left: 20px; display: grid; gap: 4px; font-size: 15px; }

.platforms { list-style: none; margin: 0; padding: 0; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); overflow: hidden; }
.platforms li + li { border-top: 1px solid var(--line); }
.platforms a, .platforms .soon {
  display: grid; grid-template-columns: 28px 1fr auto 20px; gap: 14px; align-items: center;
  padding: 16px 20px;
}
.platforms a:hover { background: var(--surface-2); }
.platforms a.current { background: var(--accent-soft); }
.platforms i.p { font-size: 20px; text-align: center; color: var(--text-2); }
.platforms .name { font-weight: 600; }
.platforms .note { font-size: 13px; color: var(--text-3); }
.platforms .v { font-family: var(--mono); font-size: 12px; color: var(--text-3); }
.platforms .go { color: var(--text-3); font-size: 13px; }
.platforms .soon { opacity: .55; }
@media (max-width: 960px) { .dl-grid { grid-template-columns: 1fr; } }
@media (max-width: 640px) {
  .dl-main { padding: 24px; }
  .dl-main h3 { font-size: 26px; }
  .platforms .v.url { display: none; }
}

/* ---------- open source ---------- */
.oss {
  margin-top: 0; border-radius: 28px; padding: 64px;
  background: var(--accent); color: var(--on-accent);
  position: relative; overflow: hidden;
}
.oss::before {
  content: "哈"; position: absolute; right: -40px; bottom: -120px;
  font-size: 420px; font-weight: 900; line-height: 1; opacity: .07; pointer-events: none;
}
.oss .label { color: var(--on-accent); }
.oss .label::before { background: var(--on-accent); }
.oss .lead { color: rgba(29, 18, 8, .78); max-width: 720px; }
.repos { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; position: relative; }
.repo {
  display: block; padding: 20px; border-radius: 16px;
  background: rgba(255, 255, 255, .22); border: 1px solid rgba(29, 18, 8, .12);
  transition: background .15s ease, transform .15s ease;
}
.repo:hover { background: rgba(255, 255, 255, .34); transform: translateY(-2px); }
.repo b { display: block; font-family: var(--mono); font-size: 14px; }
.repo span { display: block; font-size: 14px; opacity: .75; margin-top: 4px; }
.oss-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; position: relative; }
.btn-dark { background: var(--on-accent); color: #FFE9DC; }
.btn-dark:hover { background: #33200F; }
.btn-line { border: 1.5px solid rgba(29, 18, 8, .35); }
.btn-line:hover { background: rgba(255, 255, 255, .2); }
@media (max-width: 860px) { .oss { padding: 40px 24px; } .repos { grid-template-columns: 1fr; } }
@media (max-width: 640px) {
  .oss { border-radius: 22px; margin: 0 -4px; }
  .oss::before { font-size: 240px; right: -24px; bottom: -64px; }
}

/* ---------- footer ---------- */
footer { padding: 72px 0 48px; color: var(--text-3); font-size: 14px; }
.foot { display: flex; flex-wrap: wrap; gap: 20px 32px; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 28px; }
.foot img { height: 40px; opacity: .8; }
.foot nav { display: flex; flex-wrap: wrap; gap: 20px; }
.foot nav a:hover { color: var(--text); }

@media (prefers-reduced-motion: reduce) {
  .wall-col, .marquee-track, .shot-tab i { animation: none !important; }
  .device-desktop > img, .device-phone > img { transition: none; }
  html { scroll-behavior: auto; }
}