:root {
  --bg: #f4f5f9;
  --bg-grad: radial-gradient(900px 420px at 85% -120px, rgba(99,102,241,.16), transparent 60%), radial-gradient(700px 380px at -10% -80px, rgba(245,163,0,.14), transparent 60%);
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: rgba(17,24,39,.08);
  --accent: #4f46e5;
  --accent2: #7c3aed;
  --accent-ink: #ffffff;
  --red: #e11d48;
  --red-bg: #fff1f3;
  --chip: rgba(17,24,39,.06);
  --glass: rgba(255,255,255,.72);
  --shadow: 0 1px 2px rgba(17,24,39,.04), 0 8px 24px -8px rgba(17,24,39,.12);
  --shadow-lg: 0 10px 30px -10px rgba(79,70,229,.45);
  --radius: 22px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  color-scheme: light;
}
:root[data-theme='dark'] {
  --bg: #0b0d14; --card: #151925; --text: #f1f3f9; --muted: #9aa3b5; --line: rgba(255,255,255,.08);
  --accent: #8b8bff; --accent2: #a78bfa; --accent-ink: #0b0d14; --red: #fb7185; --red-bg: #2a1219;
  --chip: rgba(255,255,255,.07); --glass: rgba(21,25,37,.72); --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px -10px rgba(0,0,0,.6);
  --shadow-lg: 0 10px 30px -10px rgba(139,139,255,.4);
  --bg-grad: radial-gradient(900px 420px at 85% -120px, rgba(99,102,241,.22), transparent 60%), radial-gradient(700px 380px at -10% -80px, rgba(245,163,0,.10), transparent 60%);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme='auto'] {
    --bg: #0b0d14; --card: #151925; --text: #f1f3f9; --muted: #9aa3b5; --line: rgba(255,255,255,.08);
    --accent: #8b8bff; --accent2: #a78bfa; --accent-ink: #0b0d14; --red: #fb7185; --red-bg: #2a1219;
    --chip: rgba(255,255,255,.07); --glass: rgba(21,25,37,.72); --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px -10px rgba(0,0,0,.6);
    --shadow-lg: 0 10px 30px -10px rgba(139,139,255,.4);
    --bg-grad: radial-gradient(900px 420px at 85% -120px, rgba(99,102,241,.22), transparent 60%), radial-gradient(700px 380px at -10% -80px, rgba(245,163,0,.10), transparent 60%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg) var(--bg-grad) no-repeat; background-attachment: fixed; color: var(--text);
  font: 16px/1.5 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  padding-bottom: calc(100px + var(--safe-bottom)); overscroll-behavior-y: none; -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; cursor: pointer; transition: transform .15s ease, background .2s, box-shadow .2s, opacity .2s; }
button:active { transform: scale(.96); }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* header */
.top {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  padding: calc(12px + var(--safe-top)) 18px 8px; background: var(--glass);
  backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 42px; height: 42px; padding: 8px; border-radius: 14px; color: #fff;
  background: linear-gradient(135deg, #f59e0b, #f97316 55%, #ef4444); box-shadow: 0 8px 18px -6px rgba(249,115,22,.55);
}
h1 { margin: 0; font-size: 26px; line-height: 1; letter-spacing: -0.03em; font-weight: 800;
  background: linear-gradient(90deg, var(--text), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sub { margin: 4px 0 0; font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.sub::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 3px rgba(34,197,94,.2); }
.icon-btn {
  width: 44px; height: 44px; border-radius: 14px; border: 1px solid var(--line); background: var(--card);
  display: grid; place-items: center; font-size: 16px; box-shadow: var(--shadow);
}
.icon-btn svg { width: 22px; height: 22px; }
.icon-btn:hover { background: var(--chip); }
.icon-btn.spin svg { animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* chips */
.chips {
  position: sticky; top: calc(66px + var(--safe-top)); z-index: 19; display: flex; gap: 8px; overflow-x: auto;
  padding: 8px 18px 12px; background: var(--glass); backdrop-filter: saturate(180%) blur(18px); -webkit-backdrop-filter: saturate(180%) blur(18px);
  scrollbar-width: none; -webkit-overflow-scrolling: touch;
}
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: none; border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; min-height: 40px; background: var(--card);
  font-weight: 650; font-size: 14.5px; color: var(--text); white-space: nowrap; box-shadow: var(--shadow); display: inline-flex; align-items: center; gap: 7px;
}
.chip::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--c, linear-gradient(135deg,#f59e0b,#ef4444)); }
.chip[aria-current='true'] { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; box-shadow: var(--shadow-lg); }
.chip[aria-current='true']::before { background: #fff; }

.search { padding: 4px 18px 8px; max-width: 760px; margin: 0 auto; }
.search input {
  width: 100%; border: 1px solid var(--line); background: var(--card); color: var(--text); box-shadow: var(--shadow);
  border-radius: 16px; padding: 14px 16px 14px 44px; font-size: 16px; outline: none; transition: border-color .2s, box-shadow .2s;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='6.5'/%3E%3Cpath d='M16 16l4.5 4.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: 14px center; background-size: 20px;
}
.search input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent); }

/* list + cards */
main { padding: 8px 16px 0; max-width: 760px; margin: 0 auto; outline: none; }
.card {
  position: relative; overflow: hidden; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line);
  padding: 16px 16px 14px 20px; margin: 0 0 14px; display: grid; gap: 10px; animation: rise .35s ease both; transition: transform .2s, box-shadow .2s;
}
.card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--c, var(--muted)); }
.card:hover { transform: translateY(-2px); }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
.card.focus { outline: 2px solid var(--accent); }
.meta { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); flex-wrap: wrap; }
.dot { display: none; }
.cat {
  font-weight: 700; font-size: 11.5px; letter-spacing: .04em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px;
  color: var(--c); background: color-mix(in srgb, var(--c) 14%, transparent);
}
.badge {
  margin-left: auto; font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--chip); color: var(--text);
}
.badge.hot { background: linear-gradient(135deg, #f43f5e, #f97316); color: #fff; box-shadow: 0 6px 14px -6px rgba(244,63,94,.6); }
.body { display: flex; gap: 14px; align-items: flex-start; }
.body > div { flex: 1; min-width: 0; }
.title { font-size: 19px; line-height: 1.28; font-weight: 750; letter-spacing: -0.015em; text-decoration: none; display: block; overflow-wrap: anywhere; }
.title:hover { color: var(--accent); }
.thumb { flex: none; width: 104px; height: 104px; border-radius: 16px; object-fit: cover; background: var(--chip); box-shadow: 0 6px 16px -8px rgba(0,0,0,.35); }
.summary { margin: 8px 0 0; font-size: 15.5px; line-height: 1.55; color: color-mix(in srgb, var(--text) 88%, var(--muted)); }
.summary.snip { color: var(--muted); }
.ai-tag {
  display: inline-block; font-size: 10.5px; font-weight: 800; letter-spacing: .04em; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); border-radius: 6px; padding: 1px 6px; margin-right: 7px; vertical-align: 1px;
}
.sources { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.src {
  font-size: 12.5px; font-weight: 650; text-decoration: none; padding: 6px 12px; border-radius: 999px; background: var(--chip); color: var(--text);
  min-height: 32px; display: inline-flex; align-items: center; transition: background .2s, color .2s;
}
a.src:hover { background: var(--accent); color: #fff; }
.actions { display: flex; gap: 8px; margin-top: 2px; }
.act {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 40px; border-radius: 12px; border: 1px solid var(--line);
  background: transparent; font-weight: 650; font-size: 14px; text-decoration: none; color: var(--text);
}
.act svg { width: 17px; height: 17px; }
.act.primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; box-shadow: var(--shadow-lg); }
.act:not(.primary):hover { background: var(--chip); }
.world { font-size: 11.5px; font-weight: 700; color: var(--muted); }

.empty { text-align: center; color: var(--muted); padding: 56px 16px; }
.skeleton { height: 150px; border-radius: var(--radius); margin-bottom: 14px; background: linear-gradient(90deg, var(--chip), var(--card), var(--chip)); background-size: 200% 100%; animation: shimmer 1.3s infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

/* breaking */
.breaking { margin: 0 0 4px; }
.breaking .card { border-color: color-mix(in srgb, var(--red) 40%, transparent); background: linear-gradient(135deg, var(--red-bg), var(--card)); }
.breaking .card::before { background: linear-gradient(var(--red), #f97316); }
.flag { font-size: 11.5px; font-weight: 800; letter-spacing: .08em; color: #fff; background: linear-gradient(135deg, #f43f5e, #f97316); padding: 4px 10px; border-radius: 999px; animation: pulse 1.8s ease infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px rgba(244,63,94,.18); } }

/* footer */
.foot { text-align: center; font-size: 12.5px; color: var(--muted); padding: 18px 16px 8px; }
.foot a { font-weight: 700; text-decoration: none; background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.foot a:hover { text-decoration: underline; }

/* floating tab bar */
.tabbar {
  position: fixed; left: 50%; bottom: calc(14px + var(--safe-bottom)); transform: translateX(-50%); z-index: 30; display: flex; gap: 4px;
  width: min(420px, calc(100vw - 28px)); padding: 6px; background: var(--glass); border: 1px solid var(--line); border-radius: 26px;
  backdrop-filter: saturate(180%) blur(22px); -webkit-backdrop-filter: saturate(180%) blur(22px); box-shadow: 0 18px 40px -12px rgba(0,0,0,.35);
}
.tabbar button { flex: 1; background: none; border: 0; border-radius: 20px; display: grid; justify-items: center; gap: 2px; padding: 8px 0 6px; color: var(--muted); font-size: 11.5px; font-weight: 650; min-height: 54px; }
.tabbar button.on { color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent2)); box-shadow: var(--shadow-lg); }
.tabbar svg { width: 23px; height: 23px; }

/* pull to refresh */
.ptr { position: fixed; top: 0; left: 50%; transform: translate(-50%, -120%); transition: transform .2s; z-index: 40; padding: calc(8px + var(--safe-top)) 16px 8px; margin-top: 8px; font-size: 13px; font-weight: 600; color: var(--text); background: var(--card); border-radius: 999px; box-shadow: var(--shadow); }
.ptr.show { transform: translate(-50%, 0); }

/* settings sheet */
dialog { border: 0; padding: 0; width: min(560px, 100vw); max-width: 100vw; max-height: 90dvh; margin: auto auto 0; border-radius: 28px 28px 0 0; background: var(--bg); color: var(--text); box-shadow: 0 -20px 60px rgba(0,0,0,.3); }
dialog[open] { animation: sheet .3s cubic-bezier(.2,.9,.3,1); }
@keyframes sheet { from { transform: translateY(40px); opacity: 0; } }
dialog::backdrop { background: rgba(8,10,20,.55); backdrop-filter: blur(4px); }
.sheet { padding: 18px 20px calc(26px + var(--safe-bottom)); display: grid; gap: 12px; }
.sheet-head { display: flex; justify-content: space-between; align-items: center; }
.sheet h2 { margin: 0; font-size: 24px; letter-spacing: -.02em; }
.sheet h3 { margin: 16px 0 0; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.hint { margin: 0; font-size: 14px; color: var(--muted); line-height: 1.5; }
.seg { display: flex; background: var(--chip); border-radius: 16px; padding: 4px; gap: 4px; }
.seg button { flex: 1; border: 0; background: transparent; padding: 10px 6px; border-radius: 12px; font-weight: 650; font-size: 14px; min-height: 44px; color: var(--muted); }
.seg button[aria-pressed='true'] { background: var(--card); color: var(--text); box-shadow: var(--shadow); }
.check { display: flex; gap: 12px; align-items: center; font-size: 15px; padding: 6px 0; }
.check input { width: 22px; height: 22px; accent-color: var(--accent); }
.row { display: flex; gap: 10px; }
.btn { flex: 1; min-height: 48px; border-radius: 14px; border: 1px solid var(--line); background: var(--card); font-weight: 700; padding: 0 16px; box-shadow: var(--shadow); }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; box-shadow: var(--shadow-lg); }
.btn.ghost { background: transparent; box-shadow: none; }
.btn:disabled { opacity: .5; }

@media (min-width: 760px) {
  main { padding-top: 14px; }
  dialog { margin: auto; border-radius: 28px; }
  .chips, .top { padding-left: max(18px, calc((100vw - 760px) / 2 + 16px)); padding-right: max(18px, calc((100vw - 760px) / 2 + 16px)); }
}
@media (max-width: 420px) { .thumb { width: 84px; height: 84px; } .title { font-size: 18px; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }