:root {
  --bg:#0a0f17;
  --fg:#e9f3f1;
  --muted:#8ba3a9;
  --ring:#11d2b6;
  --ring-soft:rgba(17,210,182,0.35);
  --sun:#ffd34d;
  --card:#0b141a;
  --line:#11252b;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', Arial, sans-serif;
  background: var(--bg); /* 移除渐变，只用纯色背景 */
  color:var(--fg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--fg);text-decoration:none}
.container{width:min(1080px,92%);margin:0 auto}

/* Header */
header{padding:28px 0;display:flex;justify-content:space-between;align-items:center}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.1px}
.logo-mark{position:relative;width:24px;height:24px;border-radius:50%;border:2px solid var(--ring);box-shadow:0 0 12px var(--ring-soft),0 0 28px rgba(17,210,182,.35) inset}
.logo-mark:after{content:"";position:absolute;inset:50% auto auto 50%;width:6px;height:6px;transform:translate(-50%,-50%);border-radius:50%;background:radial-gradient(circle at 40% 40%, #ffe27a, var(--sun) 65%, #e1b93b);box-shadow:0 0 8px rgba(255,211,77,.45)}
nav a{margin-left:18px;color:var(--muted)}
nav a.active{color:var(--ring)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 18px;border-radius:12px;border:1px solid transparent;font-weight:700;letter-spacing:.2px;transition:transform .12s ease-in-out, box-shadow .12s ease-in-out, filter .12s ease-in-out}
.btn-primary{background:linear-gradient(135deg, var(--sun), #ffb300);color:#101010;box-shadow:0 4px 12px rgba(255,211,77,.12)}
.btn-primary:hover{filter:brightness(1.03);transform:translateY(-1px);box-shadow:0 8px 18px rgba(255,211,77,.16)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--fg)}

/* Cards / sections */
.section{padding:56px 0;border-top:1px solid var(--line)}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 10px 36px rgba(0,0,0,.22)}

/* Footer */
footer{border-top:1px solid var(--line);padding:20px 0 36px;color:var(--muted);font-size:13px}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand a,
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}

.footer-brand a:hover,
.footer-links a:hover {
  color: var(--fg);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-bottom {
  margin-top: 16px;
}

.footer-bottom p {
  margin: 0;
  color: var(--muted);
}

/* Light theme utility */
.light{
  --bg:#f7fbfb;
  --fg:#0a0f17;
  --muted:#5a6b72;
  --card:#ffffff;
  --line:#dbe6ea;
  --ring:#10bda6;
  --sun:#e6bb2e;
  background:var(--bg);
  color:var(--fg);
  -webkit-font-smoothing:antialiased;
}

/* Hero */
.hero{padding:96px 0 64px;position:relative}
.hero h1{font-size:42px;line-height:1.2;margin:0 0 12px;letter-spacing:.1px}
.hero p.lead{color:var(--muted);font-size:18px;max-width:720px;margin:0 0 20px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 18px;border-radius:12px;border:1px solid transparent;font-weight:700;letter-spacing:.2px;transition:transform .12s ease, box-shadow .12s ease, filter .12s ease}
.btn-primary{background:linear-gradient(135deg, var(--sun), #ffb300);color:#101010;box-shadow:0 6px 18px rgba(255,211,77,.18)}
.btn-primary:hover{filter:brightness(1.03);transform:translateY(-1px);box-shadow:0 10px 26px rgba(255,211,77,.24)}
.btn-primary:active{transform:translateY(0)}

/* Split */
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:34px;align-items:center;padding:44px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.split h2{font-size:26px;margin:0 0 10px}
.split p{color:var(--muted);margin:0 0 8px}
.mock{background:linear-gradient(180deg, rgba(17,210,182,.04), transparent 70%), var(--card);border:0.5px solid var(--line);border-radius:16px;padding:10px;box-shadow:0 10px 36px rgba(0,0,0,.22)}
.mock .bar{height:28px;border-bottom:0.5px dashed var(--line);display:flex;align-items:center;gap:6px;padding:0 8px;color:var(--muted);font-size:12px}
.dot{width:7px;height:7px;border-radius:50%;background:#fa6a6a;box-shadow:0 0 0 0.5px rgba(255,255,255,.06) inset}
.dot:nth-child(2){background:var(--sun)}
.dot:nth-child(3){background:var(--ring)}
.mock .body{padding:8px 8px;font-size:14px;color:var(--muted)}

/* Contrast Example Styles */
.contrast-example {
  background: var(--card);
  border: 0.5px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  margin: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contrast-example .oral,
.contrast-example .structured {
  padding: 8px;
  border-radius: 8px;
}

.contrast-example .oral {
  background: rgba(17,210,182,.05);
}

.contrast-example .structured {
  background: rgba(255,211,77,.05);
}

.contrast-example h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.contrast-example p,
.contrast-example li {
  margin: 2px 0;
  font-size: 14px;
}

.contrast-example ul {
  margin: 0;
  padding-left: 16px;
}

/* Voice Comparison Section */
.voice-comparison {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.original-voice {
  background: rgba(255,255,255,0.04); /* 匹配内联 */
  border-radius: 16px;
  padding: 24px;
  margin-top: 60px;
  width: 100%;
}

.tags-container {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.tag-label {
  color: #fff;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.tag-remove-filler { background: var(--ring-soft); } /* 去除口头语 - 使用极光绿淡色 */
.tag-reorder { background: var(--ring-soft); } /* 调整语序 - 使用极光绿淡色 */
.tag-extract-key { background: var(--ring-soft); } /* 提炼重点 - 使用极光绿淡色 */

.arrow {
  margin: 30px 0;
  font-size: 28px;
  color: var(--sun); /* 使用变量匹配 #E6C46D */
}

.processed-voice {
  background: rgba(255,255,255,0.08); /* 匹配内联 */
  border-radius: 16px;
  padding: 24px;
  width: 100%;
}

.voice-text {
  line-height: 1.8;
  margin: 0;
}

.processed-voice .voice-text {
  color: var(--fg); /* 匹配 #fff，但使用变量 */
}

/* Comparison Section */
.comparison-section {
  padding: 56px 0; /* 匹配 .section padding */
  border-top: 1px solid var(--line);
}

.comparison-container {
  max-width: 960px;
  margin: 0;
  text-align: left; /* 改为左对齐，与上面H2一致 */
}

.comparison-container h2 {
  font-size: 26px; /* 匹配 .split h2 的 font-size */
  font-weight: 600;
  margin: 0 0 10px; /* 匹配 .split h2 的 margin */
}

.comparison-container > p {
  color: var(--muted);
  margin-top: 12px;
  line-height: 1.8;
}

.comparison-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 60px;
  gap: 20px;
}

.comparison-card {
  flex: 1;
  min-width: 260px;
  background: var(--card); /* 使用网站卡片背景，去掉黑底 */
  border-radius: 16px;
  padding: 24px;
}

.comparison-card h3 {
  color: var(--sun);
  font-size: 18px;
  margin-bottom: 12px;
}

.comparison-card p {
  color: var(--muted);
  line-height: 1.8;
  margin: 0;
}

.comparison-card.highlight {
  background: rgba(255,255,255,0.08); /* 稍亮以区分秒言卡片 */
  color: var(--fg); /* 主要文字色 */
}

.comparison-note {
  color: var(--muted);
  font-size: 14px;
  margin-top: 40px;
}

/* User Fit Section */
.user-fit-section {
  padding: 44px 0; /* 匹配 .split 的 padding */
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.fit-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 34px; /* 匹配 .split 的 gap */
  align-items: flex-start;
  justify-content: space-between;
}

.tag-list-container {
  flex: 1;
  min-width: 300px;
}

.tag-list-container h2 {
  font-size: 26px; /* 匹配 .split h2 */
  font-weight: 600;
  margin-bottom: 16px; /* 略减以紧凑 */
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-btn {
  background: rgba(255,255,255,0.06);
  border: none;
  color: var(--fg);
  padding: 6px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s ease;
}

.tag-btn:hover {
  background: rgba(255,255,255,0.12);
}

.tag-btn.active {
  background: var(--sun);
  color: var(--bg);
  font-weight: 600;
}

.tag-content {
  flex: 1.2;
  min-width: 360px;
}

.desc {
  display: none;
}

.desc.active {
  display: block;
}

.desc h3 {
  color: var(--sun);
  font-size: 20px;
  margin-bottom: 12px;
}

.desc p {
  color: var(--muted);
  line-height: 1.8;
  margin: 0;
}

/* Flow */
.flow{
  padding:36px 0;
  border-top:1px solid var(--line);
  text-align:left; /* 左对齐 */
}
.flow h2{
  font-size:24px;
  margin:0 0 8px;
}
.flow p{
  color:var(--muted);
  margin:0 0 8px;
  line-height:1.8;
}

/* CTA block */
.cta-block{margin:40px 0 56px;background:linear-gradient(135deg, rgba(255,211,77,.14), rgba(17,210,182,.12));border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.cta-block p{margin:0;color:var(--muted);font-weight:700; /* 使用淡灰色，与段落文字一致 */}
.cta-block p .highlight{
  color:var(--fg); /* 使用白色高亮 */
  font-weight:700;
  /* 无背景色，只高亮文字 */
}

/* Responsive */
@media (max-width:960px){
  .split{grid-template-columns:1fr}
  .hero h1{font-size:32px}
}

/* Override: remove previous dual rings */
.hero::before,.hero::after{display:none!important}
/* Orb visual */
@media (max-width:1280px){.orb{right:-40px;width:180px;height:180px}.orb .pulse{animation-duration:3.4s}}
@media (max-width:960px){.orb{position:static;margin:40px auto 0;transform:none;width:160px;height:160px;display:block}.orb .pulse{animation-duration:3.2s}}

/* Docs specific */
.layout{display:grid;grid-template-columns:240px 1fr;gap:20px}
.side{position:sticky;top:16px;height:max-content}
.side .card{padding:12px}
.side a{display:block;color:var(--muted);padding:8px 10px;border-radius:8px}
.side a:hover{background:rgba(255,255,255,.03);color:var(--fg)}
.doc h1{font-size:36px;margin:0 0 8px}
.doc h2{font-size:22px;margin:22px 0 8px}
.doc p, .doc li{color:var(--muted)}

/* Mobile responsive for docs */
@media (max-width:768px){
  .layout{grid-template-columns:1fr;gap:24px}
  .side{position:static}
  .doc h1{font-size:28px}
  .doc h2{font-size:20px}
}