:root{
  --bg:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --border:#e2e8f0;

  --primary:#16a34a;
  --primaryHover:#15803d;
  --soft:#dcfce7;

  --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
  --radius: 14px;
  --radiusSm: 12px;

  --max: 1120px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.5;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:underline; text-decoration-color: rgba(22,163,74,.5); }

.container{ width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }

.skip-link{
  position:absolute; left:-999px; top:8px;
  background:var(--soft); color:var(--text);
  padding:10px 12px; border-radius:10px; border:1px solid var(--border);
}
.skip-link:focus{ left:16px; z-index:999; }

.topbar{
  position: sticky; top:0; z-index:100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar__inner{ display:flex; align-items:center; justify-content:space-between; padding:12px 0; gap:12px; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:800; }
.brand__mark{
  width:34px; height:34px; display:grid; place-items:center;
  border-radius:12px; background: var(--soft);
  border:1px solid var(--border); color: var(--primary); font-weight:900;
}
.topnav{ display:flex; gap:16px; color: var(--muted); font-weight:600; }
.topnav a{ padding:8px 10px; border-radius:10px; }
.topnav a:hover{ background: rgba(220,252,231,.7); text-decoration:none; }
.topbar__actions{ display:flex; gap:10px; }

.breadcrumbs{ padding:14px 0 0; }
.breadcrumbs ol{
  list-style:none; padding:0; margin:0; display:flex; flex-wrap:wrap; gap:8px;
  color: var(--muted); font-size: 14px;
}
.breadcrumbs li::after{ content:"/"; margin-left:6px; color:#cbd5e1; }
.breadcrumbs li:last-child::after{ content:""; }
.breadcrumbs a{ color: var(--muted); }

.page{ padding: 14px 0 64px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-weight:900; border-radius: 12px; padding: 10px 12px;
  border: 1px solid transparent; cursor:pointer; text-decoration:none;
}
.btn--primary{ background: var(--primary); color:#fff; }
.btn--primary:hover{ background: var(--primaryHover); text-decoration:none; }
.btn--outline{ background:#fff; border-color: rgba(22,163,74,.35); color: var(--primaryHover); }
.btn--outline:hover{ background: rgba(220,252,231,.35); text-decoration:none; }
.btn--ghost{ background:#fff; border-color: var(--border); color: var(--text); }
.btn--ghost:hover{ background: rgba(220,252,231,.18); text-decoration:none; }

.hero{
  position: relative;
  overflow: hidden;
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: #fff;
}
.hero::before{
  content:"";
  position:absolute;
  inset:-120px -80px auto auto;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle at center, rgba(22,163,74,.18), transparent 60%);
  pointer-events:none;
}
.hero::after{
  content:"";
  position:absolute;
  inset:auto auto -120px -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle at center, rgba(22,163,74,.10), transparent 60%);
  pointer-events:none;
}
.hero__main, .hero__panel, .hero__aside{ position: relative; z-index: 1; }

.hero h1{ margin:0 0 8px; font-size: clamp(30px, 3vw, 42px); line-height:1.1; }
.hero__subtitle{ margin:0 0 8px; color:var(--muted); font-size:16px; }

.hero-bullets{ margin: 8px 0 0; padding-left: 18px; color: var(--muted); }
.hero-bullets li{ margin: 6px 0; }

.facts{
  margin:12px 0 0;
  display:flex; gap:14px; flex-wrap:wrap;
  padding: 10px 12px;
  border:1px solid var(--border);
  border-radius: var(--radiusSm);
  background: rgba(220,252,231,.35);
}
.facts__item{ display:flex; flex-direction:column; gap:4px; }
.facts dt{ font-size:12px; color:var(--muted); }
.facts dd{ margin:0; font-weight:800; }
.hero__cta{ display:flex; gap:10px; margin-top:14px; flex-wrap:wrap; }

.callout{
  border:1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radiusSm);
  padding: 12px;
  background: rgba(220,252,231,.25);
}
.callout__badge{
  display:inline-flex;
  font-size:12px;
  font-weight:800;
  color: var(--primaryHover);
  background: rgba(220,252,231,.9);
  border:1px solid rgba(22,163,74,.25);
  padding: 4px 8px;
  border-radius: 999px;
}
.callout__text{ margin:10px 0 8px; }
.callout__link{ color: var(--primaryHover); font-weight:700; }

.mini-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.mini-tile{
  border:1px solid var(--border);
  border-radius: var(--radiusSm);
  padding: 10px;
  background: #fff;
}
.mini-tile:hover{ background: rgba(220,252,231,.35); text-decoration:none; }
.mini-tile__title{ font-weight:800; display:block; }
.mini-tile__desc{ color:var(--muted); font-size:12px; display:block; margin-top:3px; }

.layout{ display:grid; grid-template-columns: 260px 1fr; gap: 18px; margin-top: 18px; }
.toc{ position: sticky; top: 78px; align-self:start; height: fit-content; }
.toc__card{ border:1px solid var(--border); border-radius: var(--radius); padding: 12px; background:#fff; }
.toc__summary{ cursor:pointer; font-weight:900; padding: 6px 2px; }
.toc__nav{ display:flex; flex-direction:column; gap:6px; font-size:14px; color: var(--muted); padding-top:8px; }
.toc__nav a{ padding: 8px 10px; border-radius: 10px; border: 1px solid transparent; }
.toc__nav a:hover{ background: rgba(220,252,231,.35); text-decoration:none; color: var(--text); }
.toc__nav a.is-active{
  background: rgba(220,252,231,.55);
  border-color: rgba(22,163,74,.25);
  color: var(--primaryHover);
  position: relative;
}
.toc__nav a.is-active::before{
  content:"";
  position:absolute;
  left:-12px; top:10px; bottom:10px;
  width:3px; background: var(--primary);
  border-radius: 99px;
}

.section{ padding: 18px 0; border-bottom: 1px solid var(--border); }
.section:last-child{ border-bottom:none; }
.section__head{ margin-bottom: 12px; }
.section__head--row{ display:flex; align-items:flex-end; justify-content:space-between; gap:12px; }
.section__head h2{ margin:0; font-size: 22px; }
.section__sub{ margin:6px 0 0; color: var(--muted); font-size: 14px; }

.section--preview{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  background: #fff;
}

.prose p{ margin: 10px 0; }
.note{
  border:1px solid var(--border);
  border-radius: var(--radiusSm);
  padding: 12px;
  background:#fff;
  margin-top: 12px;
}
.note--green{ background: rgba(220,252,231,.25); border-left: 4px solid var(--primary); }
.note__title{ font-weight:900; margin-bottom: 6px; }
.note__text{ margin:0; color: var(--muted); }

.fold{ border:1px solid var(--border); border-radius: var(--radiusSm); padding: 10px 12px; background:#fff; }
.fold__summary{ cursor:pointer; font-weight:900; }
.fold__summary::-webkit-details-marker{ display:none; }
.fold__body{ margin-top: 10px; }

.dim-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.dim{ border:1px solid var(--border); border-radius: var(--radiusSm); padding: 12px; background:#fff; }
.dim__title{ font-weight:900; }
.dim__desc{ color: var(--muted); margin-top:4px; font-size: 14px; }

.card-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.card{ border:1px solid var(--border); border-radius: var(--radius); padding: 14px; background:#fff; }
.card h3{ margin:0 0 6px; font-size:16px; }
.card p{ margin:0; color: var(--muted); font-size:14px; }

.link{ color: var(--primaryHover); font-weight:800; }

.mini-examples{
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(220,252,231,.12);
}
.mini-examples__head{
  display:flex; align-items:baseline; justify-content:space-between; gap:10px;
  margin-bottom: 10px;
}
.mini-examples__head h3{ margin:0; font-size:16px; }

.tabs{
  display:flex; gap:8px;
  border:1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  background: #fff;
}
.tab{
  border:0; background:transparent;
  padding: 8px 12px;
  border-radius: 999px;
  font-weight:900;
  color: var(--muted);
  cursor:pointer;
}
.tab.is-active{ background: rgba(220,252,231,.7); color: var(--primaryHover); }
.tab:focus{ outline: 2px solid rgba(22,163,74,.35); outline-offset:2px; }
.tabpanes{ margin-top: 12px; }
.tabpane{ display:none; }
.tabpane.is-active{ display:block; }

.ringtone-rows{ display:flex; flex-direction:column; gap: 10px; }

.ringtone-row{
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background:#fff;
  display:grid;
  grid-template-columns: 1fr 280px 240px;
  gap: 12px;
  align-items:center;
}
.ringtone-row:hover{ background: rgba(220,252,231,.18); }
.ringtone-row.is-playing{ border-left: 4px solid var(--primary); }

.r-title{ font-weight:900; margin:0 0 4px; }
.r-meta{ display:flex; flex-wrap:wrap; gap:8px; color: var(--muted); font-size: 13px; margin:0; }
.pill{
  display:inline-flex; align-items:center;
  padding: 4px 8px;
  border-radius: 999px;
  border:1px solid rgba(22,163,74,.22);
  background: rgba(220,252,231,.35);
  color: var(--primaryHover);
  font-weight:900;
  font-size: 12px;
}

.player{ display:flex; align-items:center; gap: 10px; }
.playbtn{
  width:44px; height:44px;
  border-radius: 14px;
  border:1px solid rgba(22,163,74,.28);
  background: rgba(220,252,231,.75);
  color: var(--primaryHover);
  font-weight:900;
  cursor:pointer;
}
.playbtn:hover{ background: rgba(220,252,231,.95); }
.playbtn:focus{ outline: 2px solid rgba(22,163,74,.35); outline-offset:2px; }

.progress{
  flex:1;
  height: 8px;
  background: #eef2f7;
  border-radius: 999px;
  overflow:hidden;
  border:1px solid var(--border);
}
.progress__bar{ width:0%; height:100%; background: var(--primary); }

.time{ color: var(--muted); font-size:12px; min-width: 44px; text-align:right; }

.actions{
  display:flex;
  justify-content:flex-end;
  gap: 8px;
  flex-wrap:wrap;
}
.small-btn{
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background:#fff;
  font-weight:900;
  color: var(--muted);
  cursor:pointer;
}
.small-btn:hover{ background: rgba(220,252,231,.18); }

.select{ display:flex; align-items:center; gap:8px; font-size: 13px; color: var(--muted); }
.select select{
  border:1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background:#fff;
  font-weight:800;
}

.table-block{ margin-top: 12px; }
.table-block h3{ margin: 0 0 10px; font-size: 16px; }
.table-wrap{
  border:1px solid var(--border);
  border-radius: var(--radius);
  overflow:auto;
  background:#fff;
}
table{ width:100%; border-collapse:collapse; min-width: 680px; }
th, td{ padding: 12px 14px; border-bottom:1px solid var(--border); text-align:left; vertical-align:top; font-size: 14px; }
thead th{ background: rgba(220,252,231,.35); color: var(--primaryHover); font-weight:900; }
tbody tr:hover td{ background: rgba(220,252,231,.12); }

.tag-cloud{
  list-style:none;
  padding:0;
  margin: 8px 0 0;
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
}
.tag-cloud a{
  display:inline-flex;
  padding: 8px 10px;
  border-radius: 999px;
  border:1px solid rgba(22,163,74,.25);
  background: rgba(220,252,231,.25);
  color: var(--primaryHover);
  font-weight:900;
  font-size: 13px;
}
.tag-cloud a:hover{ background: rgba(220,252,231,.55); text-decoration:none; }

.faq details{
  border:1px solid var(--border);
  border-radius: var(--radiusSm);
  padding: 10px 12px;
  background:#fff;
  margin-bottom: 10px;
}
.faq summary{ cursor:pointer; font-weight:900; list-style:none; }
.faq summary::-webkit-details-marker{ display:none; }
.faq__body{ margin-top: 8px; color: var(--muted); }

.page-footer{ padding: 22px 0 10px; }
.page-footer__grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 16px;
  border:1px solid var(--border);
  border-radius: var(--radius);
  background:#fff;
}
.page-footer__title{ font-weight:900; margin-bottom: 8px; }
.footer-links{ margin:0; padding-left: 18px; color: var(--muted); }
.footer-links a{ color: var(--muted); }

.muted{ color: var(--muted); }
.small{ font-size: 12px; }

/* Mobile sticky CTA */
.mobile-cta{ display:none; }
@media (max-width: 720px){
  .mobile-cta{
    position: sticky;
    bottom: 0;
    display:flex;
    gap:10px;
    padding: 10px 16px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    z-index: 80;
  }
  .mobile-cta .btn{ flex:1; }
}
/* ===== Hero center alignment on desktop ===== */
@media (min-width: 981px){
  .hero{
    grid-template-columns: 1fr; /* PC 先用单列 */
    justify-items: center;       /* 子元素水平居中 */
    text-align: center;          /* 文本居中 */
  }

  .hero__main{
    max-width: 760px;            /* 控制内容宽度，别太散 */
  }

  .hero-bullets{
    text-align: left;            /* bullet 仍然左对齐，更易读 */
    display: inline-block;
  }

  .hero__actions{
    justify-content: center;     /* CTA 按钮居中 */
  }
}

/* Responsive */
@media (max-width: 980px){
  .hero{ grid-template-columns: 1fr; }
  .layout{ grid-template-columns: 1fr; }
  .toc{ position: static; }
  .card-grid{ grid-template-columns: 1fr 1fr; }
  .dim-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px){
  .topnav{ display:none; }
  .card-grid{ grid-template-columns: 1fr; }
  .dim-grid{ grid-template-columns: 1fr; }
  .mini-grid{ grid-template-columns: 1fr; }

  .ringtone-row{ grid-template-columns: 1fr; align-items: start; }
  .actions{ justify-content:flex-start; }
  .player{ width: 100%; }
  .time{ min-width: 40px; font-size: 11px; }
  .playbtn{ width:42px; height:42px; }
}
/* ===== Product-style Quick Preview (horizontal cards) ===== */
.preview-rail{
  display:flex;
  gap: 12px;
  overflow-x:auto;
  padding: 6px 2px 10px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.preview-rail::-webkit-scrollbar{ height: 8px; }
.preview-rail::-webkit-scrollbar-thumb{
  background: rgba(15,23,42,.12);
  border-radius: 999px;
}

/* Card row used inside preview rail */
.card-row{
  min-width: 320px;
  scroll-snap-align: start;
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background:#fff;
  box-shadow: 0 12px 30px rgba(2,6,23,.06);
  display:grid;
  grid-template-columns: 64px 1fr 44px;
  gap: 12px;
  align-items:center;
}
.card-row:hover{ background: rgba(220,252,231,.18); }
.card-thumb{
  width:64px; height:64px;
  border-radius: 14px;
  overflow:hidden;
  background: rgba(220,252,231,.35);
  border:1px solid rgba(22,163,74,.18);
  display:grid;
  place-items:center;
  position: relative;
}
.card-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.card-thumb::after{
  content:"▶";
  position:absolute;
  inset:auto auto 8px 8px;
  width: 26px;
  height: 26px;
  border-radius: 10px;
  display:grid;
  place-items:center;
  background: rgba(255,255,255,.88);
  border:1px solid rgba(15,23,42,.10);
  font-weight:900;
  color: var(--primaryHover);
}
.card-title{ font-weight:900; margin:0; line-height:1.2; }
.card-sub{
  margin-top:4px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  color: var(--muted);
  font-size: 13px;
  align-items:center;
}
.card-play{
  width:44px; height:44px;
  border-radius: 14px;
  border:1px solid rgba(22,163,74,.28);
  background: rgba(220,252,231,.75);
  color: var(--primaryHover);
  font-weight: 900;
  cursor:pointer;
}
.card-play:focus{ outline: 2px solid rgba(22,163,74,.35); outline-offset:2px; }

@media (max-width: 420px){
  .card-row{ min-width: 280px; }
}
.card__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 10px;
}

.mini-rows{
  margin-top: 10px;
}

/* mini list: tighter spacing */
.mini-rows .ringtone-row{
  padding: 10px;
}
.mini-rows .actions{
  display:none; /* 迷你列表先隐藏下载按钮，避免卡片太长 */
}
.mini-rows .player{
  width: 100%;
}
/* =========================================================
   Mobile polish (product-like)
   Paste at END of styles.css
========================================================= */
@media (max-width: 720px){

  /* Layout: single column */
  .container.page{ padding-left: 12px; padding-right: 12px; }
  .layout{ display:block; }
   .toc{ display:block; }     /* 保留容器，避免把内容一起干掉 */
  .toc__card{ display:none; }
  .toc__nav{ display:none; } /* mobile: hide toc to reduce bounce */
  .content{ width: 100%; }

  /* Hero: tighter */
  .hero{ padding: 14px; border-radius: 18px; }
  .hero h1{ font-size: 30px; line-height: 1.05; }
  .hero__subtitle{ font-size: 14px; }
  .hero-bullets{ margin-top: 10px; }
  .hero-bullets li{ margin: 6px 0; }

  /* Section spacing */
  .section{ padding-top: 6px; }
  .section__head{ gap: 6px; }  .toc{ display:block; }     /* 保留容器，避免把内容一起干掉 */
  .toc__card{ display:none; }
  .section__head h2{ font-size: 20px; }
  .section__sub{ font-size: 13px; }

  /* Card grids become single column */
  .card-grid{
    display:grid;
    grid-template-columns: 1fr !important;
    gap: 12px;
  }
  .card{
    border-radius: 18px;
    padding: 14px;
  }

  /* Era blocks become card-like */
  .dim-grid{
    display:grid;
    grid-template-columns: 1fr !important;
    gap: 10px;
  }
  .dim.dim--card{
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 12px;
    background: #fff;
  }

  /* Comparison table block: soften */
  .table-block{
    border-radius: 18px;
    padding: 12px;
  }
  .table-wrap{
    border-radius: 14px;
  }

  /* ---------- Ringtone card style (mobile) ---------- */
  .ringtones{ display:flex; flex-direction:column; gap: 12px; }

  /* Turn each ringtone row into a card */
  .ringtones .ringtone-row{
    display:block; /* override grid */
    border: 1px solid rgba(22,163,74,.18);
    border-radius: 18px;
    padding: 12px;
    background: #fff;
    box-shadow: 0 10px 28px rgba(2,6,23,.06);
  }

  /* title */
  .ringtones .r-title{
    font-size: 16px;
    font-weight: 900;
    line-height: 1.25;
    margin-bottom: 8px;
  }

  /* meta line becomes compact */
  .ringtones .r-meta{
    margin: 0 0 10px;
    display:flex;
    flex-wrap:wrap;
    gap: 8px;
    align-items:center;
  }

  /* Pill tags show like your screenshot */
  .ringtones .pill{
    padding: 6px 10px;
    border-radius: 12px;
    border: 1px solid rgba(15,23,42,.14);
    background: rgba(255,255,255,.9);
    font-size: 13px;
    font-weight: 700;
  }

  /* Player block */
  .ringtones .player{
    display:flex;
    align-items:center;
    gap: 10px;
    width: 100%;
    margin-top: 6px;
  }
  .ringtones .playbtn{
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: rgba(22,163,74,.10);
    border: 1px solid rgba(22,163,74,.22);
    font-weight: 900;
  }
  .ringtones .progress{
    flex: 1;
    height: 10px;
    border-radius: 999px;
    overflow:hidden;
  }
  .ringtones .progress__bar{
    height:100%;
    border-radius: 999px;
  }
  .ringtones .time{ min-width: 46px; text-align:right; color: var(--muted); }

  /* Actions: one primary Download button only (to match your screenshot) */
  .ringtones .actions{
    display:flex;
    justify-content:flex-end;
    gap: 10px;
    margin-top: 12px;
  }
  .ringtones .actions .btn--outline,
  .ringtones .actions .small-btn{
    display:none; /* keep it clean on mobile */
  }
  .ringtones .actions .btn--primary{
    padding: 12px 16px;
    border-radius: 14px;
    font-weight: 900;
  }

  /* If you have many tags: wrap nicely */
  .ringtones .tag-stack{
    display:flex;
    flex-wrap:wrap;
    gap: 8px;
    margin-top: 8px;
  }

  /* Related tags cloud: 2 columns */
  .tag-cloud{
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 0;
  }
  .tag-cloud li a{
    display:block;
    padding: 10px 12px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: #fff;
  }

  /* Footer spacing */
  .page-footer{ margin-top: 18px; }
  .page-footer__grid{ grid-template-columns: 1fr !important; gap: 14px; }

  /* Mobile sticky CTA (already exists): ensure above iOS safe area */
  .mobile-cta{
    padding-bottom: calc(10px + env(safe-area-inset-bottom));
  }
}
/* ========== Tamil Ringtone Categories ========== */
.cat{
  padding: 32px 0 40px;
}

.cat__title{
  font-size: clamp(28px, 2.6vw, 44px);
  margin-bottom: 20px;
}

.cat__grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 22px;
}

@media (max-width: 900px){
  .cat__grid{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 600px){
  .cat__grid{ grid-template-columns: 1fr; }
}

.cat-card{
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 22px;
  background: #fff;
}

.cat-card__count{
  color: #16a34a;
  font-weight: 700;
  margin: 6px 0 12px;
}

.cat-card__desc{
  color: #475569;
  line-height: 1.6;
}
/* ========== Use Cases ========== */
.usecases{
  padding: 32px 0 40px;
}

.usecases__title{
 font-size: clamp(28px, 2.6vw, 44px);
  margin-bottom: 20px;
}

.usecases__grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

@media (max-width: 700px){
  .usecases__grid{ grid-template-columns: 1fr; }
}

.uc-card{
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  background: #fff;
  padding: 22px;
  min-height: 210px;
}

.uc-card__title{
  margin: 0 0 10px;
  font-size: 26px;
  line-height: 1.2;
  color: #0f172a;
  letter-spacing: -0.01em;
}

.uc-card__link{
  color: inherit;
  text-decoration: none;
}

.uc-card__link:hover{
  text-decoration: underline;
  text-underline-offset: 3px;
}

.uc-card__desc{
  margin: 0 0 14px;
  color: #475569;
  line-height: 1.7;
}

.uc-card__rec{
  background: #ecfdf3;
  border-radius: 10px;
  padding: 14px 14px;
  color: #14532d;
  line-height: 1.55;
}

.uc-card__rec strong{
  font-weight: 800;
}
/* ===== Mobile layout safety fix ===== */
@media (max-width: 768px){
  main, section, .content{
    display: block !important;
    height: auto !important;
    overflow: visible !important;
  }

  .cat__grid,
  .usecases__grid{
    grid-template-columns: 1fr !important;
  }

  .floating-download,
  .floating-player,
  .bottom-bar,
  .sticky-actions{
    display: none !important;
  }
}
/* ===== Canonical mobile layout =====
   Goal:
   - Hide TOC on mobile
   - Always show article.content
   - Never show bottom floating CTA
*/
@media (max-width: 720px){
  .layout{ display:block !important; }
  .layout > .toc{ display:none !important; }
  .layout > .content{
    display:block !important;
    width:100% !important;
    height:auto !important;
    overflow:visible !important;
  }
  .mobile-cta{ display:none !important; }
}
/* ===== Layout: mobile-safe ===== */
@media (max-width: 720px){
  .layout{
    display: block;      /* 彻底取消 grid */
  }

  /* 不要隐藏 toc 容器本身 */
  .toc{
    display: block;
  }

  /* 只隐藏 toc 里的内容 */
  .toc__card{
    display: none;
  }

  /* 明确 content 是正常流 */
  .content{
    display: block;
    width: 100%;
  }
}
@media (max-width: 720px){

  /* layout 断 grid */
  .layout{
    display: block;
  }

  /* toc 本身存在 */
  .toc{
    display: block;
    margin-bottom: 12px;
  }

  /* details 默认收起 */
  .toc__details{
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px 10px;
    background: #fff;
  }

  /* content 永远展开 */
  .content{
    display: block;
    width: 100%;
    height: auto;
    overflow: visible;
  }
}
/* ===== Ringtone card (screenshot style) ===== */
.tone{
  border: 1px solid rgba(22,163,74,.55);
  border-radius: 14px;
  background:#fff;
  padding: 14px;
}

.tone__grid{
  display:grid;
  grid-template-columns: 76px 1fr auto;
  gap: 14px;
  align-items:start;
}

.tone__thumb{
  width:76px;
  height:76px;
  border-radius: 10px;
  overflow:hidden;
  position:relative;
  background: rgba(22,163,74,.08);
}

.tone__thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.tone__play{
  position:absolute;
  top:10px;
  left:10px;
  width:34px;
  height:34px;
  border-radius: 10px;
  border: 1px solid rgba(15,23,42,.12);
  background: rgba(255,255,255,.88);
  font-weight: 800;
  line-height: 32px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  box-shadow: 0 6px 16px rgba(15,23,42,.12);
}
.tone__play:active{ transform: translateY(1px); }


.tone__title{
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 900;
  line-height:1.2;
}

.tone__meta{
  display:flex;
  align-items:center;
  gap:10px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 10px;
}
.tone__dot{ opacity:.6; }
.tone__spacer{ flex:1; }

.tone__dl{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color: var(--muted);
}
.tone__dlIcon{ opacity:.7; }

.tone__chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.chip{
  display:inline-flex;
  align-items:center;
  padding: 7px 10px;
  border-radius: 10px;
  border: 1px solid #cbd5e1;
  background:#fff;
  color: #0f172a;
  text-decoration:none;
  font-weight:600;
}

.chip:hover{
  background: rgba(220,252,231,.35);
  text-decoration:none;
}

.tone__cta{
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
}

.tone__download{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid rgba(22,163,74,.7);
  color: var(--primaryHover);
  background:#fff;
  font-weight: 900;
  text-decoration:none;
}
.tone__download:hover{
  background: rgba(220,252,231,.35);
  text-decoration:none;
}

/* keep progress/audio in DOM but visually hidden */
.tone__hidden{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0);
  white-space:nowrap; border:0;
}

/* Mobile */
@media (max-width: 720px){
  .tone__grid{
    grid-template-columns: 76px 1fr;
  }
  .tone__cta{
    grid-column: 1 / -1;
    justify-content:flex-end;
    margin-top: 10px;
  }
}


/* ===== Home card grid (3 per row on desktop) ===== */
.ringtones,
.ringtone-rows.ringtones{
  display:grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* 2 columns on medium screens */
@media (min-width: 720px){
  .ringtones,
  .ringtone-rows.ringtones{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 3 columns on desktop */
@media (min-width: 1100px){
  .ringtones,
  .ringtone-rows.ringtones{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Card layout closer to the screenshot */
.tone{
  padding: 18px;
  border-radius: 14px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, .06);
}

.tone__grid{
  display:grid;
  grid-template-columns: 84px 1fr;
  gap: 14px;
  align-items:start;
}

.tone__media{ grid-column: 1; }
.tone__body{ grid-column: 2; }

.tone__thumb{
  width: 76px;
  height: 76px;
  border-radius: 12px;
  overflow:hidden;
  position:relative;
  background: linear-gradient(135deg, rgba(16,185,129,.9), rgba(59,130,246,.55));
}

.tone__thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  opacity:.95;
}

.tone__play{
  position:absolute;
  inset:0;
  margin:auto;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  display:grid;
  place-items:center;
  border: 0;
  cursor:pointer;
  background: rgba(255,255,255,.28);
  color: #ffffff;
  font-weight: 900;
  backdrop-filter: blur(2px);
}

.tone__title{
  margin: 2px 0 10px;
  font-size: 20px;
  line-height: 1.2;
}

.tone__meta{
  display:flex;
  align-items:center;
  gap: 12px;
  color: var(--muted);
  font-weight: 700;
  flex-wrap:wrap;
  margin-bottom: 10px;
}

.tone__meta .tone__spacer{ flex: 1 1 auto; }

.tone__dlIcon,
.tone__clockIcon{
  display:inline-flex;
  width: 18px;
  height: 18px;
  align-items:center;
  justify-content:center;
  opacity:.75;
  margin-right: 6px;
}

/* Chips like screenshot */
.tone__chips{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 8px;
}

.chip{
  border-radius: 6px;
  padding: 8px 12px;
  font-weight: 800;
}

/* Download button bottom-right */
.tone__cta{
  grid-column: 2;
  justify-self:end;
  align-self:end;
  margin-top: 14px;
}

.tone__download{
  padding: 10px 18px;
  border-radius: 10px;
}

/* Hide the mini progress bar area on card grid (optional) */
.tone__hidden{ display:none; }


/* ===== Card layout: reduce left blank under thumbnail ===== */
.tone__grid{
  grid-template-columns: 92px 1fr; /* slightly narrower media column */
}

.tone__thumb{
  width: 72px;
  height: 72px;
}

.tone__chips{
  grid-column: 1 / -1;           /* span both columns */
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 10px;
}

.tone__cta{
  grid-column: 1 / -1;           /* span both columns */
  justify-self:end;
  margin-top: 14px;
}

/* Make chips look like your target (slightly smaller so 10 chips fit better) */
.chip{
  padding: 8px 12px;
  border-radius: 6px;
}

/* Keep body meta compact */
.tone__meta{
  margin-bottom: 6px;
}


/* ===== Make the top (thumb + title + meta) more compact ===== */
.tone__grid{
  gap: 10px;                 /* tighter than before */
  align-items: start;
}

.tone__body{
  padding-top: 2px;          /* reduces perceived top whitespace */
}

.tone__title{
  margin: 0 0 6px;           /* tighter */
  font-size: 18px;           /* slightly smaller like reference */
  line-height: 1.15;
}

.tone__meta{
  gap: 10px;                 /* tighter */
  margin: 0;                 /* remove extra space under meta */
  line-height: 1.1;
}

.tone__dlIcon,
.tone__clockIcon{
  width: 16px;
  height: 16px;
  margin-right: 6px;
  opacity: .7;
}

/* Slightly smaller thumb to match compact header */
.tone__thumb{
  width: 68px;
  height: 68px;
  border-radius: 12px;
}
.tone__play{
  width: 40px;
  height: 40px;
}

/* Keep chips from pushing header down too much */
.tone__chips{
  margin-top: 8px;
}
/* ===== Fix "View all" squeeze in section header ===== */
.section__head--row{
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;        /* 顶部对齐 */
}

.section__head--row .link{
  white-space: nowrap;      /* 防止 View / all 换行 */
  align-self: start;
  margin-top: 6px;          /* 与标题对齐视觉更稳 */
}
/* ===== Normalize titles inside content cards (Categories / Use Cases etc.) ===== */
.card h2,
.card h3,
.card h4 {
  font-size: 18px;     /* 与 index / tamil 其他维度一致 */
  line-height: 1.25;
  margin: 0 0 8px;
  font-weight: 700;
}

/* Optional: secondary text inside cards */
.card p {
  margin: 0;
}
/* ===== Recommendation highlight (green block) ===== */
.rec {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.12); /* 绿色淡底 */
  color: #065f46;
  font-size: 14px;
  line-height: 1.4;
}

.rec strong {
  font-weight: 700;
}
/* ===== Related Tags ===== */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-pill {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 14px;
  background: #f1f5f9;
  color: #0f172a;
  text-decoration: none;
  transition: background .15s ease, color .15s ease;
}

.tag-pill:hover {
  background: #e2e8f0;
  color: #020617;
}
.page-note {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid #e5e7eb;
  text-align: center;
}

.page-note .muted {
  font-size: 13px;
  color: #64748b;
  line-height: 1.5;
}