/* ============================================================
   TsukiVox 官网样式
   品牌色：青 #32E6C3 / 琥珀 #FFBD72 / 近黑 #08090B
   ============================================================ */

:root {
  --bg: #08090B;
  --bg-soft: #0D1013;
  --bg-card: #11151A;
  --line: rgba(255, 255, 255, 0.08);
  --text: #F0F8F5;
  --text-dim: #9AA8A3;
  --accent: #32E6C3;
  --accent-soft: rgba(50, 230, 195, 0.12);
  --warm: #FFBD72;
  --radius: 16px;
  --header-h: 64px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; }
a { color: inherit; text-decoration: none; }

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #04231C;
  box-shadow: 0 8px 28px rgba(50, 230, 195, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(50, 230, 195, 0.4); }
.btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 16px 36px; font-size: 17px; }

/* ---------- 导航栏 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(8, 9, 11, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(8, 9, 11, 0.9);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { border-radius: 9px; }
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: .5px; }

.site-nav { display: flex; align-items: center; gap: 34px; }
.site-nav a {
  font-size: 15px;
  color: var(--text-dim);
  transition: color .2s ease;
}
.site-nav a:hover { color: var(--text); }
.site-nav .nav-cta {
  color: #04231C;
  background: var(--accent);
  padding: 8px 20px;
  border-radius: 999px;
  font-weight: 600;
}
.site-nav .nav-cta:hover { color: #04231C; filter: brightness(1.08); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 9px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 56px) 0 120px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.moon {
  position: absolute;
  top: 8%;
  right: 12%;
  width: clamp(180px, 24vw, 320px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 36% 32%, #FFFFFF 0%, #DFF7EF 34%, #A8E8D5 62%, #6ED9BC 100%);
  box-shadow:
    0 0 60px rgba(50, 230, 195, 0.35),
    0 0 160px rgba(50, 230, 195, 0.18),
    0 0 320px rgba(50, 230, 195, 0.08);
  opacity: .9;
}
.moon::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 62% 58%, rgba(8,9,11,.16) 0 8%, transparent 9%),
    radial-gradient(circle at 40% 66%, rgba(8,9,11,.12) 0 5%, transparent 6%),
    radial-gradient(circle at 58% 30%, rgba(8,9,11,.10) 0 6%, transparent 7%);
}
.moon-ring {
  position: absolute;
  top: 8%;
  right: 12%;
  width: clamp(180px, 24vw, 320px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(50, 230, 195, 0.25);
  transform: scale(1.28);
}
.star {
  position: absolute;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 12px var(--warm);
  animation: twinkle 3.4s ease-in-out infinite;
}
.s1 { top: 18%; left: 10%; }
.s2 { top: 34%; left: 42%; animation-delay: .8s; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.s3 { top: 12%; left: 62%; animation-delay: 1.6s; }
.s4 { top: 52%; left: 6%; animation-delay: 2.4s; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
@keyframes twinkle { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(50, 230, 195, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 5.4vw, 62px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { margin-top: 22px; font-size: 13px; color: var(--text-dim); opacity: .8; }

/* 平板控制台 mock */
.hero-visual { position: relative; display: flex; justify-content: center; }
.tablet-mock {
  width: min(400px, 100%);
  background: linear-gradient(160deg, #141A20 0%, #0B0E12 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.55),
    0 0 0 6px rgba(255, 255, 255, 0.02),
    0 0 90px rgba(50, 230, 195, 0.08);
  transform: perspective(1100px) rotateY(-9deg) rotateX(4deg);
  transition: transform .5s ease;
}
.hero-visual:hover .tablet-mock { transform: perspective(1100px) rotateY(-3deg) rotateX(1deg); }
.tablet-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.tablet-topbar img { border-radius: 6px; }
.tablet-topbar .dot {
  margin-left: auto;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.tablet-search {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 14px 0 10px;
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text-dim);
  font-size: 13px;
}
.tablet-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tablet-chips span {
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid rgba(50, 230, 195, 0.25);
  color: var(--accent);
}
.tablet-queue { display: flex; flex-direction: column; gap: 8px; }
.queue-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 13px;
}
.queue-row.playing { background: var(--accent-soft); border: 1px solid rgba(50, 230, 195, 0.3); }
.q-tag {
  font-size: 11px;
  font-weight: 700;
  color: #04231C;
  background: var(--accent);
  border-radius: 6px;
  padding: 2px 8px;
}
.q-num {
  width: 22px; height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text-dim);
  font-size: 12px;
}
.q-title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.q-eq { display: flex; align-items: flex-end; gap: 2px; height: 14px; }
.q-eq i {
  width: 3px;
  background: var(--warm);
  border-radius: 2px;
  animation: eq 1s ease-in-out infinite;
}
.q-eq i:nth-child(1) { height: 40%; animation-delay: 0s; }
.q-eq i:nth-child(2) { height: 90%; animation-delay: .2s; }
.q-eq i:nth-child(3) { height: 60%; animation-delay: .4s; }
.q-eq i:nth-child(4) { height: 80%; animation-delay: .1s; }
@keyframes eq { 0%, 100% { transform: scaleY(.4); } 50% { transform: scaleY(1); } }

.glowstick {
  position: absolute;
  right: -6%;
  bottom: -8%;
  width: 14px;
  height: 120px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--warm), rgba(255, 189, 114, 0.15));
  box-shadow: 0 0 24px rgba(255, 189, 114, 0.55);
  transform: rotate(24deg);
  animation: sway 4s ease-in-out infinite;
}
@keyframes sway { 0%, 100% { transform: rotate(18deg); } 50% { transform: rotate(30deg); } }

.hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 90px;
  background: linear-gradient(180deg, transparent, var(--bg));
}

/* ---------- 数据条 ---------- */
.strip { border-block: 1px solid var(--line); background: var(--bg-soft); }
.strip-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding-block: 30px;
}
.strip-item { text-align: center; }
.strip-item strong { display: block; font-size: 20px; color: var(--accent); margin-bottom: 2px; }
.strip-item span { font-size: 13px; color: var(--text-dim); }

/* ---------- 通用区块 ---------- */
.section { padding: 110px 0; }
.section-dark {
  background:
    radial-gradient(900px 420px at 85% 10%, rgba(50, 230, 195, 0.06), transparent 60%),
    var(--bg-soft);
  border-block: 1px solid var(--line);
}
.section-head { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--warm);
  margin-bottom: 14px;
}
.section h2 {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.3;
  font-weight: 800;
}
.section-sub { margin-top: 16px; color: var(--text-dim); font-size: 16px; }

/* ---------- 功能网格 ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(50, 230, 195, 0.45);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.4), 0 0 32px rgba(50, 230, 195, 0.06);
}
.f-icon {
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 13px;
  background: var(--accent-soft);
  border: 1px solid rgba(50, 230, 195, 0.25);
  color: var(--accent);
  margin-bottom: 18px;
}
.f-icon svg { width: 24px; height: 24px; }
.feature-card h3 { font-size: 17px; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-dim); line-height: 1.75; }

/* ---------- 沉浸体验 ---------- */
.experience-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.check-list { list-style: none; margin-top: 26px; display: grid; gap: 12px; }
.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--text-dim);
  font-size: 15px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(50, 230, 195, 0.4);
}
.check-list li::after {
  content: "";
  position: absolute;
  left: 5px; top: 9px;
  width: 7px; height: 4px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

.eq-visual { display: flex; justify-content: center; }
.eq-room {
  width: min(460px, 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, #10151B 0%, #0A0D11 100%);
  padding: 22px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.eq-screen {
  border-radius: 14px;
  background:
    radial-gradient(420px 160px at 50% 120%, rgba(255, 189, 114, 0.14), transparent 70%),
    linear-gradient(160deg, #0E2A24 0%, #071410 100%);
  border: 1px solid rgba(50, 230, 195, 0.2);
  height: 170px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.eq-lyric {
  font-size: 19px;
  letter-spacing: 3px;
  color: var(--accent);
  text-shadow: 0 0 22px rgba(50, 230, 195, 0.6);
}
.eq-bars {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 7px;
  height: 74px;
  margin-bottom: 22px;
}
.eq-bars i {
  width: 9px;
  border-radius: 5px;
  background: linear-gradient(180deg, var(--warm), var(--accent));
  animation: eqbar 1.1s ease-in-out infinite;
  animation-delay: var(--d);
}
@keyframes eqbar { 0%, 100% { height: 18%; } 50% { height: 100%; } }
.eq-sofa {
  height: 46px;
  border-radius: 14px 14px 20px 20px;
  background: linear-gradient(180deg, #1C232C, #131820);
  border: 1px solid var(--line);
}

/* ---------- 参数 ---------- */
.spec-grid {
  max-width: 760px;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
}
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 17px 26px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.spec-row:last-child { border-bottom: none; }
.spec-row span { color: var(--text-dim); flex-shrink: 0; }
.spec-row strong { font-weight: 600; text-align: right; }

.roadmap { text-align: center; margin-top: 44px; }
.roadmap h3 { font-size: 15px; color: var(--text-dim); letter-spacing: 2px; margin-bottom: 16px; }
.roadmap-tags { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.roadmap-tags span {
  font-size: 13px;
  color: var(--warm);
  border: 1px dashed rgba(255, 189, 114, 0.45);
  background: rgba(255, 189, 114, 0.07);
  padding: 7px 16px;
  border-radius: 999px;
}

/* ---------- 下载 ---------- */
.section-download {
  background:
    radial-gradient(700px 340px at 50% 0%, rgba(50, 230, 195, 0.1), transparent 65%),
    var(--bg);
  text-align: center;
}
.download-logo { margin: 0 auto 26px; border-radius: 18px; box-shadow: 0 0 60px rgba(50, 230, 195, 0.25); }
.download-inner .section-sub { max-width: 460px; margin-inline: auto; }
.download-inner .hero-actions { justify-content: center; margin-top: 34px; }
.download-note { margin-top: 20px; font-size: 13px; color: var(--text-dim); opacity: .85; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 44px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand img { border-radius: 8px; }
.footer-brand strong { font-size: 16px; }
.footer-brand p { font-size: 12px; color: var(--text-dim); }
.footer-links { display: flex; gap: 26px; }
.footer-links a { font-size: 14px; color: var(--text-dim); transition: color .2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { width: 100%; text-align: center; font-size: 12px; color: var(--text-dim); opacity: .7; }

/* ---------- 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .star, .q-eq i, .eq-bars i, .glowstick { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   响应式
   ============================================================ */

/* 平板 */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 64px; }
  .hero { min-height: auto; }
  .hero-copy { text-align: center; }
  .hero-sub { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .moon { top: -8%; right: 50%; transform: translateX(50%); opacity: .32; }
  .moon-ring { top: -8%; right: 50%; transform: translateX(50%) scale(1.28); opacity: .5; }
  .experience-inner { grid-template-columns: 1fr; gap: 48px; }
  .experience-copy { text-align: center; }
  .check-list { max-width: 420px; margin-inline: auto; text-align: left; }
}

/* 手机 */
@media (max-width: 720px) {
  .section { padding: 76px 0; }

  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(8, 9, 11, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 10px 24px 20px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform .25s ease, opacity .25s ease;
  }
  .site-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .site-nav a {
    padding: 15px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }
  .site-nav a:last-child { border-bottom: none; }
  .site-nav .nav-cta {
    margin-top: 14px;
    text-align: center;
    padding: 13px;
  }

  .strip-inner { grid-template-columns: repeat(2, 1fr); gap: 26px 12px; }
  .feature-grid { grid-template-columns: 1fr; }
  .spec-row { flex-direction: column; align-items: flex-start; gap: 4px; }
  .spec-row strong { text-align: left; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-brand { flex-direction: column; }
  .glowstick { display: none; }
  .tablet-mock { transform: none; }
  .hero-visual:hover .tablet-mock { transform: none; }
}

/* 小屏手机 */
@media (max-width: 420px) {
  .container { padding: 0 18px; }
  .hero { padding-bottom: 88px; }
  .hero-actions .btn { width: 100%; }
  .strip-item strong { font-size: 17px; }
}