/* ============================================================
   声叙 · 基础样式：设计变量 / 导航 / 主视觉 / 内容区 / 页脚
   ============================================================ */

:root {
  --bg: #f7f7fb;
  --bg-soft: #f0f0f8;
  --surface: #ffffff;
  --surface-2: #fbfbfe;
  --surface-3: #f4f4fb;
  --ink: #171827;
  --ink-2: #4a4e68;
  --muted: #8a8fa6;
  --line: #e7e8f1;
  --line-2: #f0f0f7;
  --primary: #6c5ce7;
  --primary-2: #8b7cf6;
  --primary-soft: #f0edff;
  --accent: #f5856b;
  --accent-2: #ffb08a;
  --accent-soft: #fff1eb;
  --success: #2fa88b;
  --danger: #e15b64;
  --shadow-sm: 0 2px 12px rgba(28, 30, 60, .05);
  --shadow: 0 14px 44px rgba(28, 30, 60, .07);
  --shadow-lg: 0 30px 90px rgba(40, 36, 90, .14);
  --r-lg: 24px;
  --r: 18px;
  --r-sm: 12px;
  --nav-h: 72px;
  --ease: cubic-bezier(.22, .8, .32, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

[data-theme="dark"] {
  --bg: #0d0e17;
  --bg-soft: #12131f;
  --surface: #171827;
  --surface-2: #1c1e2e;
  --surface-3: #22243a;
  --ink: #f2f2fa;
  --ink-2: #b9bcd0;
  --muted: #83879f;
  --line: #2a2c40;
  --line-2: #232538;
  --primary: #9184ff;
  --primary-2: #a99cff;
  --primary-soft: #262244;
  --accent: #ff9c80;
  --accent-2: #ffbd9e;
  --accent-soft: #332420;
  --success: #48c3a4;
  --danger: #ff7b83;
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, .2);
  --shadow: 0 14px 44px rgba(0, 0, 0, .28);
  --shadow-lg: 0 30px 90px rgba(0, 0, 0, .42);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 20px); }
body {
  margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font);
  font-size: 15px; line-height: 1.7; -webkit-font-smoothing: antialiased;
  overflow-x: hidden; transition: background .35s var(--ease), color .35s var(--ease);
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p { margin: 0; }
::selection { background: rgba(108, 92, 231, .22); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; border-radius: 6px; }
[hidden] { display: none !important; }

.container { width: min(1200px, calc(100% - 48px)); margin: 0 auto; }
.grad-text {
  background: linear-gradient(100deg, var(--primary) 8%, #a06bf0 45%, var(--accent) 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border-radius: 13px; padding: 11px 20px; font-size: 14px; font-weight: 600;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, border-color .25s, filter .2s;
  white-space: nowrap; position: relative; overflow: hidden;
}
.btn svg, .btn .ico { width: 17px; height: 17px; flex: 0 0 17px; }
.btn:active { transform: scale(.975) !important; }
.btn-primary { background: linear-gradient(120deg, var(--primary), var(--primary-2)); color: #fff; box-shadow: 0 8px 24px rgba(108, 92, 231, .26); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(108, 92, 231, .36); filter: brightness(1.04); }
.btn-primary::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 25%, rgba(255,255,255,.28) 48%, transparent 70%); transform: translateX(-120%); transition: transform .7s var(--ease); }
.btn-primary:hover::after { transform: translateX(120%); }
.btn-outline { border: 1px solid var(--line); background: var(--surface); color: var(--ink); box-shadow: var(--shadow-sm); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.btn-ghost { background: var(--surface-3); color: var(--ink-2); }
.btn-ghost:hover { background: var(--primary-soft); color: var(--primary); }
.btn-soft { background: var(--primary-soft); color: var(--primary); width: 100%; }
.btn-soft:hover { filter: brightness(.97); transform: translateY(-1px); }
.btn-lg { padding: 14px 26px; font-size: 15px; border-radius: 14px; }
.btn-sm { padding: 9px 15px; font-size: 13px; border-radius: 11px; }
.btn-block { width: 100%; padding: 13px; }
.btn-arrow { transition: transform .25s var(--ease); }
.btn:hover .btn-arrow { transform: translateX(4px); }
.icon-btn { width: 36px; height: 36px; border-radius: 11px; display: inline-flex; align-items: center; justify-content: center; color: var(--ink-2); transition: background .2s, color .2s, transform .2s; flex: 0 0 36px; }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn:hover { background: var(--surface-3); color: var(--primary); transform: translateY(-1px); }
kbd { font: 11px/1 var(--font); padding: 4px 6px; border-radius: 6px; background: rgba(255,255,255,.2); border: 1px solid rgba(255,255,255,.25); letter-spacing: .5px; }

/* ---------- 导航 ---------- */
.nav { position: sticky; top: 0; z-index: 60; height: var(--nav-h); background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px); border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s, background .3s; }
.nav.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(30, 32, 60, .05); }
.nav-inner { width: min(1240px, calc(100% - 48px)); height: 100%; margin: 0 auto; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.brand-mark { width: 36px; height: 36px; display: block; filter: drop-shadow(0 5px 12px rgba(108, 92, 231, .28)); }
.brand-mark svg { width: 100%; height: 100%; }
.brand-text { font-size: 19px; font-weight: 800; letter-spacing: -.5px; line-height: 1.05; display: flex; flex-direction: column; }
.brand-text small { font-size: 8px; font-weight: 700; letter-spacing: 2.4px; color: var(--muted); margin-top: 2px; }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-link { padding: 8px 14px; border-radius: 10px; font-size: 14px; color: var(--ink-2); font-weight: 500; transition: color .2s, background .2s; position: relative; }
.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.is-current { color: var(--primary); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.quota-pill { display: inline-flex; align-items: center; gap: 8px; padding: 8px 13px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); font-size: 12.5px; font-weight: 600; color: var(--ink-2); box-shadow: var(--shadow-sm); transition: transform .2s, border-color .2s; }
.quota-pill:hover { transform: translateY(-1px); border-color: var(--primary); }
.quota-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 18%, transparent); }
.quota-pill.is-low .quota-dot { background: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.nav-menu-btn, .mobile-menu { display: none; }
.mobile-menu { position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); padding: 14px 24px 20px; flex-direction: column; gap: 4px; box-shadow: var(--shadow); }
.mobile-menu.is-open { display: flex; }
.mobile-menu a, .mobile-menu button { text-align: left; padding: 11px 8px; font-size: 15px; border-bottom: 1px solid var(--line-2); color: var(--ink-2); }

/* ---------- 公告 ---------- */
.announce { background: linear-gradient(90deg, var(--primary-soft), var(--accent-soft)); border-bottom: 1px solid var(--line); }
.announce-inner { width: min(1200px, calc(100% - 48px)); margin: 0 auto; display: flex; align-items: center; gap: 12px; padding: 10px 0; font-size: 13px; color: var(--ink-2); }
.announce-badge { background: var(--primary); color: #fff; border-radius: 6px; padding: 2px 8px; font-size: 11px; font-weight: 700; flex: 0 0 auto; }
.announce-inner span:nth-child(2) { flex: 1; }
.announce-inner button { font-size: 20px; line-height: 1; color: var(--muted); padding: 0 4px; }

/* ---------- 主视觉 ---------- */
.hero { position: relative; padding: 92px 0 104px; overflow: hidden; isolation: isolate; }
.hero-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; z-index: -2; pointer-events: none; }
.glow-a { width: 620px; height: 620px; background: radial-gradient(circle, rgba(124, 107, 242, .32), transparent 68%); top: -220px; left: -180px; animation: drift 18s ease-in-out infinite alternate; }
.glow-b { width: 540px; height: 540px; background: radial-gradient(circle, rgba(245, 133, 107, .24), transparent 68%); top: 40px; right: -160px; animation: drift 22s ease-in-out infinite alternate-reverse; }
.hero-grid { position: absolute; inset: 0; z-index: -1; background-image: radial-gradient(var(--line) 1px, transparent 1px); background-size: 26px 26px; mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 80%); -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 80%); opacity: .55; }
@keyframes drift { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(60px, 40px, 0) scale(1.12); } }
.hero-inner { display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: 60px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; font-size: 12.5px; font-weight: 700; letter-spacing: .4px; color: var(--primary); background: var(--surface); border: 1px solid var(--line); padding: 7px 14px; border-radius: 999px; box-shadow: var(--shadow-sm); }
.eyebrow-spark { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--accent) 4%, transparent); } }
.hero h1 { font-size: clamp(40px, 5.2vw, 68px); line-height: 1.16; font-weight: 800; letter-spacing: -.045em; margin: 26px 0 22px; }
.hero-sub { font-size: 16.5px; color: var(--ink-2); line-height: 1.9; }
.hero-cta { display: flex; gap: 14px; margin: 34px 0 30px; flex-wrap: wrap; }
.hero-trust { display: flex; gap: 22px; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust .check { width: 15px; height: 15px; border-radius: 50%; background: color-mix(in srgb, var(--success) 14%, transparent); position: relative; }
.hero-trust .check::after { content: ""; position: absolute; width: 6px; height: 3px; border-left: 1.6px solid var(--success); border-bottom: 1.6px solid var(--success); transform: rotate(-45deg); left: 4px; top: 5px; }

/* 右侧声音卡 */
.hero-visual { position: relative; height: 440px; display: flex; align-items: center; justify-content: center; }
.orb { position: absolute; border-radius: 50%; filter: blur(4px); opacity: .5; }
.orb-1 { width: 330px; height: 330px; background: radial-gradient(circle at 35% 30%, rgba(139,124,246,.35), transparent 70%); animation: floaty 9s ease-in-out infinite; }
.orb-2 { width: 240px; height: 240px; background: radial-gradient(circle at 60% 60%, rgba(255,176,138,.3), transparent 70%); bottom: 20px; right: 10px; animation: floaty 11s ease-in-out infinite reverse; }
@keyframes floaty { 50% { transform: translateY(-22px); } }
.sound-card { position: relative; z-index: 2; width: min(100%, 420px); background: color-mix(in srgb, var(--surface) 82%, transparent); backdrop-filter: blur(20px); border: 1px solid color-mix(in srgb, var(--surface) 60%, var(--line)); border-radius: 24px; padding: 24px; box-shadow: var(--shadow-lg); transform: rotate(-2deg); transition: transform .5s var(--ease); }
.sound-card:hover { transform: rotate(0deg) translateY(-6px); }
.sound-card-top { display: flex; align-items: center; gap: 12px; }
.sound-avatar { width: 44px; height: 44px; border-radius: 15px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; display: grid; place-items: center; font-size: 12px; font-weight: 700; box-shadow: 0 8px 20px rgba(108,92,231,.28); }
.sound-meta { flex: 1; display: flex; flex-direction: column; line-height: 1.45; }
.sound-meta strong { font-size: 14px; }
.sound-meta span { font-size: 11.5px; color: var(--muted); }
.sound-live { font-size: 10px; font-weight: 700; letter-spacing: 1px; color: var(--accent); display: inline-flex; align-items: center; gap: 5px; }
.sound-live i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 1.8s infinite; }
.sound-wave { height: 112px; display: flex; align-items: center; gap: 3px; margin: 24px 0 18px; }
.sound-wave i { flex: 1; border-radius: 4px; background: linear-gradient(180deg, var(--primary-2), var(--primary)); opacity: .85; min-height: 5px; transition: height .18s ease; animation: waveDance 1.6s ease-in-out infinite alternate; }
.sound-wave i:nth-child(3n) { background: linear-gradient(180deg, var(--accent-2), var(--accent)); animation-delay: -.4s; }
@keyframes waveDance { to { transform: scaleY(.55); } }
.sound-card-bottom { display: flex; align-items: center; gap: 12px; }
.mini-play { width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; box-shadow: 0 6px 16px rgba(108,92,231,.3); position: relative; flex: 0 0 34px; }
.mini-play::after { content: ""; width: 0; height: 0; border-left: 9px solid #fff; border-top: 6px solid transparent; border-bottom: 6px solid transparent; margin-left: 3px; }
.mini-track { flex: 1; height: 5px; background: var(--line); border-radius: 99px; overflow: hidden; }
.mini-progress { height: 100%; width: 36%; border-radius: 99px; background: linear-gradient(90deg, var(--primary), var(--accent)); animation: prog 6s linear infinite; }
@keyframes prog { from { width: 8%; } to { width: 92%; } }
.mini-time { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.float-chip { position: absolute; z-index: 3; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 8px 15px; font-size: 12px; font-weight: 600; color: var(--ink-2); box-shadow: var(--shadow); animation: floaty 5s ease-in-out infinite; white-space: nowrap; }
.chip-1 { top: 12%; left: -2%; animation-delay: -.6s; }
.chip-2 { top: 26%; right: -4%; animation-delay: -1.8s; }
.chip-3 { bottom: 22%; left: -6%; animation-delay: -1.1s; }
.chip-4 { bottom: 8%; right: 2%; animation-delay: -2.4s; }
.hero-scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; font-size: 11px; letter-spacing: 2px; color: var(--muted); }
.hero-scroll i { width: 1px; height: 30px; background: linear-gradient(var(--muted), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 50% { transform: scaleY(.5); transform-origin: top; opacity: .4; } }

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; position: relative; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-kicker { display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: 2.6px; color: var(--primary); text-transform: uppercase; margin-bottom: 14px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; letter-spacing: -.035em; line-height: 1.3; }
.section-head p { color: var(--ink-2); margin-top: 14px; font-size: 15.5px; }
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .75s var(--ease), transform .75s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* 能力卡 */
.features { background: linear-gradient(180deg, transparent, var(--bg-soft) 40%, transparent); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px 30px 28px; box-shadow: var(--shadow-sm); transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .3s; position: relative; overflow: hidden; }
.feature-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity .3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--primary) 30%, var(--line)); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 54px; height: 54px; border-radius: 17px; margin-bottom: 24px; position: relative; }
.fi-1 { background: linear-gradient(135deg, #e9e4ff, #d7cdff); }
.fi-2 { background: linear-gradient(135deg, #ffe6da, #ffd0bd); }
.fi-3 { background: linear-gradient(135deg, #dcf3ec, #c6e9dd); }
.feature-icon::after { content: ""; position: absolute; inset: 0; background-repeat: no-repeat; background-position: center; background-size: 26px; }
.fi-1::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236C5CE7' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M12 3v18M8 7v10M16 7v10M4 10v4M20 10v4'/%3E%3C/svg%3E"); }
.fi-2::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E8704F' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 4V2m0 20v-2M4.9 6.9 3.5 5.5m13 13 1.4 1.4M4 12H2m20 0h-2M6.9 19.1l-1.4 1.4M18.5 5.5l1.4-1.4'/%3E%3Ccircle cx='12' cy='12' r='3.5'/%3E%3C/svg%3E"); }
.fi-3::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232FA88B' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='M4 15c2-6 4 4 6-2s4 6 6-2 3 2 4-1'/%3E%3C/svg%3E"); }
.feature-card h3 { font-size: 19px; font-weight: 700; letter-spacing: -.02em; margin-bottom: 10px; }
.feature-card p { color: var(--ink-2); font-size: 14px; line-height: 1.85; }
.feature-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-size: 13.5px; font-weight: 700; color: var(--primary); }
.feature-link span { transition: transform .25s var(--ease); }
.feature-link:hover span { transform: translateX(5px); }

/* ---------- 音色库 / 模板 ---------- */
.voices-section, .presets-section { background: var(--bg-soft); border-top: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .3s; position: relative; overflow: hidden; }
.gallery-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: color-mix(in srgb, var(--primary) 26%, var(--line)); }
.gc-top { display: flex; align-items: center; gap: 13px; }
.gc-avatar { width: 50px; height: 50px; border-radius: 16px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 15px; letter-spacing: 1px; box-shadow: 0 8px 20px rgba(40,36,90,.14); flex: 0 0 50px; }
.gc-info { flex: 1; min-width: 0; }
.gc-info strong { display: block; font-size: 16px; letter-spacing: -.02em; }
.gc-info span { font-size: 12px; color: var(--muted); }
.gc-preview { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line); display: grid; place-items: center; color: var(--primary); transition: background .2s, transform .2s; flex: 0 0 34px; }
.gc-preview svg { width: 15px; height: 15px; }
.gc-preview:hover { background: var(--primary-soft); transform: scale(1.07); }
.gc-preview.is-playing { background: var(--primary); color: #fff; }
.gc-desc { font-size: 13px; color: var(--ink-2); line-height: 1.75; margin: 16px 0; min-height: 46px; }
.gc-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.gc-tag { font-size: 11px; background: var(--surface-3); color: var(--muted); padding: 3px 9px; border-radius: 6px; }
.gc-use { display: flex; align-items: center; justify-content: space-between; font-size: 13px; font-weight: 700; color: var(--primary); border-top: 1px solid var(--line-2); padding-top: 14px; }
.gc-use span { transition: transform .25s var(--ease); }
.gallery-card:hover .gc-use span { transform: translateX(4px); }
.preset-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.preset-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 24px 22px; text-align: left; transition: transform .35s var(--ease), box-shadow .35s var(--ease); position: relative; overflow: hidden; }
.preset-card::before { content: ""; position: absolute; width: 130px; height: 130px; border-radius: 50%; top: -70px; right: -60px; background: var(--pc, var(--primary)); opacity: .1; transition: opacity .3s, transform .5s var(--ease); }
.preset-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.preset-card:hover::before { opacity: .2; transform: scale(1.3); }
.pc-icon { width: 38px; height: 38px; border-radius: 12px; background: var(--pc, var(--primary)); opacity: .16; margin-bottom: 18px; position: relative; }
.pc-icon::after { content: ""; position: absolute; inset: 11px; border-radius: 4px; background: var(--pc, var(--primary)); opacity: 1; }
.preset-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 7px; }
.preset-card p { font-size: 13px; color: var(--muted); line-height: 1.7; min-height: 44px; }
.pc-quote { font-size: 12px; color: var(--ink-2); background: var(--surface-3); border-radius: 10px; padding: 10px 12px; margin-top: 14px; line-height: 1.7; }
.pc-go { font-size: 12.5px; font-weight: 700; color: var(--primary); margin-top: 14px; display: inline-block; }

/* ---------- 风格实验室 ---------- */
.style-lab { display: grid; grid-template-columns: .9fr 1.1fr; gap: 28px; align-items: start; }
.lab-card { background: linear-gradient(150deg, var(--surface), var(--surface-2)); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 34px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.lab-card::after { content: "“"; position: absolute; font-size: 170px; line-height: 1; color: var(--primary); opacity: .07; top: -30px; right: 12px; font-family: Georgia, serif; }
.lab-quote { font-size: 21px; font-weight: 600; line-height: 1.8; letter-spacing: -.02em; min-height: 110px; }
.lab-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 22px 0 18px; min-height: 34px; }
.lab-pill { background: var(--primary-soft); color: var(--primary); font-size: 12.5px; font-weight: 700; padding: 6px 13px; border-radius: 999px; animation: popIn .35s var(--ease); }
@keyframes popIn { from { transform: scale(.8); opacity: 0; } }
.lab-hint { font-size: 12.5px; color: var(--muted); border-top: 1px dashed var(--line); padding-top: 18px; }
.lab-right { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--shadow-sm); }
.lab-cats { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 18px; }
.lab-cat { font-size: 12.5px; padding: 7px 13px; border-radius: 9px; background: var(--surface-3); color: var(--ink-2); font-weight: 600; transition: all .2s; }
.lab-cat.is-active { background: var(--primary); color: #fff; }
.lab-chips { display: flex; gap: 8px; flex-wrap: wrap; min-height: 80px; align-content: flex-start; }
.lab-chip { font-size: 13px; padding: 8px 15px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--ink-2); transition: all .2s var(--ease); }
.lab-chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); transform: translateY(-2px); }
.director-card { margin-top: 22px; background: var(--surface-3); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.dc-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.dc-icon { width: 36px; height: 36px; border-radius: 11px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; flex: 0 0 36px; }
.dc-icon svg { width: 18px; height: 18px; }
.dc-head strong { display: block; font-size: 14px; }
.dc-head span { font-size: 12px; color: var(--muted); }
.director-card pre { font: 12px/1.9 var(--font); color: var(--ink-2); white-space: pre-wrap; margin: 0 0 16px; background: var(--surface); border-radius: 10px; padding: 14px; border: 1px solid var(--line); }

/* ---------- 指南 / FAQ ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 28px 26px; box-shadow: var(--shadow-sm); }
.step-no { font-size: 13px; font-weight: 800; letter-spacing: 2px; color: var(--primary); display: block; margin-bottom: 18px; }
.step h3 { font-size: 18px; margin-bottom: 9px; }
.step p { font-size: 13.5px; color: var(--ink-2); line-height: 1.85; }
.faq-wrap { margin-top: 58px; max-width: 820px; margin-left: auto; margin-right: auto; }
.faq-title { text-align: center; font-size: 24px; margin-bottom: 26px; letter-spacing: -.02em; }
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; transition: border-color .25s, box-shadow .25s; }
.faq-item.is-open { border-color: color-mix(in srgb, var(--primary) 32%, var(--line)); box-shadow: var(--shadow-sm); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 17px 20px; text-align: left; font-size: 14.5px; font-weight: 600; }
.faq-q i { width: 22px; height: 22px; border-radius: 50%; background: var(--surface-3); position: relative; flex: 0 0 22px; transition: background .25s, transform .3s var(--ease); }
.faq-q i::before, .faq-q i::after { content: ""; position: absolute; background: var(--ink-2); border-radius: 2px; left: 50%; top: 50%; transform: translate(-50%, -50%); }
.faq-q i::before { width: 10px; height: 1.5px; }
.faq-q i::after { width: 1.5px; height: 10px; transition: opacity .25s; }
.faq-item.is-open .faq-q i { background: var(--primary); transform: rotate(180deg); }
.faq-item.is-open .faq-q i::after { opacity: 0; }
.faq-item.is-open .faq-q i::before, .faq-item.is-open .faq-q i::after { background: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .38s var(--ease); }
.faq-item.is-open .faq-a { max-height: 400px; }
.faq-a p { padding: 0 20px 18px; color: var(--ink-2); font-size: 13.5px; line-height: 1.9; }

/* ---------- 页脚 ---------- */
.footer { background: var(--surface); border-top: 1px solid var(--line); padding: 56px 0 0; margin-top: 20px; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; padding-bottom: 40px; }
.footer-brand p { color: var(--muted); font-size: 13.5px; margin-top: 16px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; align-content: flex-start; max-width: 520px; }
.footer-links a, .footer-links button { font-size: 13px; color: var(--ink-2); padding: 4px 0; transition: color .2s; }
.footer-links a:hover, .footer-links button:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid var(--line-2); padding: 18px 0 24px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }

/* ---------- 移动端底栏 ---------- */
.mobile-bar { display: none; }

/* ---------- 维护遮罩 ---------- */
.site-mask { position: fixed; inset: 0; z-index: 200; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(14px); display: grid; place-items: center; }
.mask-card { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 40px; text-align: center; box-shadow: var(--shadow-lg); max-width: 420px; }
.mask-card svg { width: 42px; height: 42px; color: var(--primary); margin: 0 auto 16px; }
.mask-card h2 { font-size: 22px; margin-bottom: 10px; }
.mask-card p { font-size: 14px; color: var(--ink-2); }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .hero-inner { gap: 30px; }
  .gallery, .feature-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .preset-grid { grid-template-columns: repeat(2, 1fr); }
  .style-lab { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: inline-flex; }
  .quota-pill { display: none; }
  .hero { padding: 60px 0 80px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { height: 340px; max-width: 480px; margin: 0 auto; }
  .float-chip { font-size: 11px; padding: 6px 11px; }
  .chip-1 { left: 0; } .chip-3 { left: 0; }
  .section { padding: 72px 0; }
}
@media (max-width: 640px) {
  .container, .nav-inner, .announce-inner { width: calc(100% - 32px); }
  .brand-text { font-size: 17px; }
  .nav-inner { gap: 12px; }
  #btnRedeemTop { display: none; }
  .theme-toggle { display: none; }
  .hero h1 { font-size: clamp(34px, 9vw, 46px); margin-top: 22px; }
  .hero-sub { font-size: 14.5px; }
  .hero-cta .btn { flex: 1; }
  .hero-trust { gap: 12px; font-size: 12px; }
  .hero-visual { height: 300px; }
  .sound-card { padding: 18px; }
  .sound-wave { height: 78px; margin: 18px 0 14px; }
  .feature-grid, .gallery, .preset-grid, .steps { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 36px; }
  .feature-card, .gallery-card, .step, .preset-card { padding: 22px; }
  .footer-inner { flex-direction: column; gap: 26px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}