:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --card-2: #fbfbfd;
  --text: #1d1d1f;
  --sub: #6e6e73;
  --line: rgba(0, 0, 0, .08);
  --fill: rgba(0, 0, 0, .05);
  --accent: #0071e3;
  --nav: rgba(245, 245, 247, .72);
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.04);
  --green: #34c759;
  --orange: #ff9f0a;
  --red: #ff3b30;
  --purple: #af52de;
  --grad: linear-gradient(120deg, #0a84ff 0%, #5e5ce6 45%, #bf5af2 100%);
  --radius: 22px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --card-2: #161618;
    --text: #f5f5f7;
    --sub: #98989d;
    --line: rgba(255, 255, 255, .1);
    --fill: rgba(255, 255, 255, .08);
    --accent: #2997ff;
    --nav: rgba(22, 22, 23, .72);
    --shadow: 0 0 0 1px rgba(255,255,255,.04);
    --green: #30d158;
    --orange: #ff9f0a;
    --red: #ff453a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.01em;
}
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); text-decoration: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--nav);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 16px;
  height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; font-size: 17px; white-space: nowrap; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 7px; background: var(--grad);
  color: #fff; display: grid; place-items: center; font-size: 14px;
}
.nav-links { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  color: var(--sub); font-size: 13px; padding: 6px 12px; border-radius: 980px; white-space: nowrap;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); background: var(--fill); }
.nav-links a.soon { opacity: .45; cursor: default; }

/* ---------- Layout ---------- */
main { max-width: 1120px; margin: 0 auto; padding: 0 16px 64px; }
.section { margin-top: 56px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.section-head h2 { margin: 0; font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.section-head p { margin: 4px 0 0; color: var(--sub); }
.sub { color: var(--sub); font-size: 13px; }
.card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px;
}

/* ---------- Hero ---------- */
.hero { text-align: center; padding: 64px 0 8px; }
.eyebrow { color: var(--orange); font-weight: 600; font-size: 15px; margin: 0 0 8px; }
.hero h1 { font-size: clamp(40px, 7vw, 72px); line-height: 1.05; margin: 0; font-weight: 700; letter-spacing: -0.035em; }
.hero .lede { color: var(--sub); font-size: clamp(17px, 2.2vw, 21px); margin: 14px auto 0; max-width: 640px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

.hero-panel {
  margin-top: 40px; display: grid; grid-template-columns: minmax(240px, 320px) 1fr; gap: 16px; text-align: left;
}
.ring-card { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 28px; }
.ring-wrap { position: relative; width: 220px; height: 220px; max-width: 100%; }
.ring { width: 100%; height: 100%; display: block; }
.ring-bg { stroke: var(--fill); }
.ring-fg { transition: stroke-dashoffset 1s cubic-bezier(.2,.8,.2,1); }
.ring-label { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.ring-num { font-size: 56px; font-weight: 700; letter-spacing: -0.04em; line-height: 1; }
.ring-num small { font-size: 22px; font-weight: 600; margin-left: 2px; }
.ring-cap { color: var(--sub); font-size: 13px; margin-top: 6px; }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.stat { display: flex; flex-direction: column; justify-content: space-between; min-height: 120px; }
.stat-label { color: var(--sub); font-size: 13px; }
.stat-value { font-size: 40px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; }
.stat-value small { font-size: 16px; color: var(--sub); font-weight: 500; margin-left: 4px; }
.stat-note { font-size: 13px; }
.up { color: var(--green); } .down { color: var(--red); } .warn { color: var(--orange); }

.pace { grid-column: 1 / -1; }
.pace-row { display: grid; grid-template-columns: 72px 1fr 44px; align-items: center; gap: 12px; margin-top: 10px; font-size: 13px; }
.pace-row b { text-align: right; font-weight: 600; }

/* ---------- Bars ---------- */
.bar { height: 6px; border-radius: 6px; background: var(--fill); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: 6px; background: var(--c, var(--accent)); transition: width .8s cubic-bezier(.2,.8,.2,1); }
.bar.grad > i { background: var(--grad); }
.bar.time > i { background: var(--sub); opacity: .5; }

/* ---------- Streams ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; align-items: start; }
.stream { transition: transform .2s; }
.stream-head { display: flex; justify-content: space-between; align-items: start; gap: 12px; cursor: pointer; margin-bottom: 14px; }
.stream-name { font-size: 19px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.stream-name::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.stream-pct { font-size: 32px; font-weight: 700; letter-spacing: -0.03em; line-height: 1; color: var(--c); }
.stream-pct span { font-size: 15px; }
.chev { color: var(--sub); font-size: 12px; margin-top: 12px; display: block; text-align: center; cursor: pointer; }

.checklist { list-style: none; margin: 16px 0 0; padding: 0; border-top: 1px solid var(--line); }
.checklist li { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.checklist label { flex: 1; display: flex; align-items: center; gap: 10px; cursor: pointer; min-width: 0; }
.checklist li.done span.t { color: var(--sub); text-decoration: line-through; }
.checklist input[type=checkbox] {
  appearance: none; -webkit-appearance: none; width: 20px; height: 20px; flex: none; margin: 0;
  border-radius: 50%; border: 1.5px solid var(--sub); display: grid; place-items: center; cursor: pointer; transition: .15s;
}
.checklist input[type=checkbox]:checked { background: var(--c); border-color: var(--c); }
.checklist input[type=checkbox]:checked::after { content: ""; width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: translateY(-1px) rotate(45deg); }
.w { font-size: 11px; color: var(--sub); background: var(--fill); padding: 2px 8px; border-radius: 980px; cursor: pointer; user-select: none; white-space: nowrap; }
.icon-btn { background: none; border: 0; color: var(--sub); cursor: pointer; font-size: 17px; line-height: 1; padding: 2px 4px; border-radius: 6px; opacity: .5; }
.icon-btn:hover { opacity: 1; background: var(--fill); }

.add-item { display: flex; gap: 8px; margin-top: 12px; }
.add-item input { flex: 1; min-width: 0; }
.stream-foot { display: flex; justify-content: space-between; margin-top: 12px; }

/* ---------- Inputs / buttons ---------- */
input, select, textarea {
  background: var(--fill); border: 1px solid transparent; border-radius: 10px; padding: 8px 12px; outline: none; transition: border .15s, background .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); background: var(--card); }
textarea { resize: vertical; min-height: 80px; }
.btn {
  background: var(--accent); color: #fff; border: 0; border-radius: 980px; padding: 8px 18px; cursor: pointer;
  font-size: 14px; font-weight: 500; white-space: nowrap; transition: filter .15s, transform .1s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(.97); }
.btn.ghost { background: var(--fill); color: var(--text); }
.btn.danger { background: transparent; color: var(--red); }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 0; font-size: 13px; }
.link.danger { color: var(--red); }

/* ---------- Timeline ---------- */
.timeline { display: flex; gap: 0; overflow-x: auto; padding: 8px 4px 4px; scroll-snap-type: x mandatory; }
.ms { flex: 1 0 160px; position: relative; padding: 34px 12px 0 0; cursor: pointer; scroll-snap-align: start; }
.ms::before { content: ""; position: absolute; top: 9px; left: 0; right: 0; height: 2px; background: var(--line); }
.ms.done::before { background: var(--green); }
.ms .dot {
  position: absolute; top: 0; left: 0; width: 20px; height: 20px; border-radius: 50%;
  background: var(--card); border: 2px solid var(--sub); z-index: 1; transition: .2s;
}
.ms.done .dot { background: var(--green); border-color: var(--green); }
.ms.done .dot::after { content: ""; position: absolute; left: 6px; top: 2px; width: 4px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.ms.late .dot { border-color: var(--red); }
.ms.next .dot { border-color: var(--accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 20%, transparent); }
.ms-date { font-size: 12px; color: var(--sub); }
.ms.late .ms-date { color: var(--red); }
.ms-title { font-weight: 600; margin-top: 2px; padding-right: 8px; }

/* ---------- Board ---------- */
.seg { display: inline-flex; background: var(--fill); border-radius: 10px; padding: 3px; }
.seg button { border: 0; background: transparent; padding: 6px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; color: var(--sub); }
.seg button.on { background: var(--card); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.12); font-weight: 500; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.chip { border: 0; background: var(--fill); color: var(--sub); padding: 5px 14px; border-radius: 980px; cursor: pointer; font-size: 13px; }
.chip.on { background: var(--text); color: var(--bg); }

.summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.summary .card { padding: 16px 18px; }
.summary .n { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }

.need { cursor: pointer; display: flex; flex-direction: column; gap: 8px; transition: transform .15s; }
.need:hover, .kcard:hover { transform: translateY(-2px); }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 2px 10px; border-radius: 980px; background: var(--fill); color: var(--sub); }
.pri { font-size: 12px; padding: 2px 10px; border-radius: 980px; font-weight: 500; }
.pri-high { background: color-mix(in srgb, var(--red) 14%, transparent); color: var(--red); }
.pri-mid { background: color-mix(in srgb, var(--orange) 16%, transparent); color: var(--orange); }
.pri-low { background: var(--fill); color: var(--sub); }
.title { font-size: 17px; font-weight: 600; }
.detail { color: var(--sub); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--sub); margin-top: auto; padding-top: 6px; align-items: center; }
.status { margin-left: auto; font-size: 12px; padding: 3px 12px; border-radius: 980px; border: 0; cursor: pointer; font-weight: 500; }
.s0 { background: var(--fill); color: var(--sub); }
.s1 { background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.s2 { background: color-mix(in srgb, var(--green) 16%, transparent); color: var(--green); }
.overdue { color: var(--red); }

.kanban { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: start; }
.kcol { background: var(--card-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; min-height: 200px; transition: background .15s; }
.kcol.over { background: color-mix(in srgb, var(--accent) 8%, var(--card-2)); }
.kcol-head { display: flex; justify-content: space-between; align-items: center; padding: 2px 6px 12px; font-weight: 600; }
.kcol-head .count { color: var(--sub); font-weight: 500; font-size: 13px; }
.kcard { padding: 14px 16px; margin-bottom: 10px; border-radius: 16px; cursor: grab; display: flex; flex-direction: column; gap: 6px; transition: transform .15s, opacity .15s; }
.kcard.dragging { opacity: .4; }
.kcard .title { font-size: 15px; }
.kmove { display: flex; gap: 4px; margin-left: auto; }
.kmove button { border: 0; background: var(--fill); color: var(--sub); width: 24px; height: 24px; border-radius: 50%; cursor: pointer; font-size: 12px; }
.kmove button:hover { color: var(--text); }
.empty { color: var(--sub); text-align: center; padding: 28px 8px; font-size: 13px; }

/* ---------- Settings ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 12px; color: var(--sub); font-weight: 500; }
.field.full { grid-column: 1 / -1; }
.settings-list .card + .card { margin-top: 16px; }
.settings-list h3 { margin: 0 0 4px; font-size: 19px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* ---------- Modal ---------- */
.backdrop {
  position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.32);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: grid; place-items: center; padding: 16px; animation: fade .2s;
}
.modal { width: min(520px, 100%); max-height: 90vh; overflow: auto; background: var(--card); border-radius: 24px; padding: 26px; box-shadow: 0 20px 60px rgba(0,0,0,.25); animation: pop .25s cubic-bezier(.2,.9,.3,1.2); }
.modal h3 { margin: 0 0 18px; font-size: 21px; }
.modal .form-grid { grid-template-columns: 1fr 1fr; }
.modal-actions { display: flex; gap: 10px; margin-top: 22px; }
.modal-actions .spacer { flex: 1; }
@keyframes fade { from { opacity: 0; } }
@keyframes pop { from { opacity: 0; transform: scale(.94) translateY(10px); } }

#toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); z-index: 200;
  background: var(--text); color: var(--bg); padding: 10px 20px; border-radius: 980px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: .3s;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

.foot { text-align: center; color: var(--sub); font-size: 12px; padding: 24px 16px 40px; border-top: 1px solid var(--line); max-width: 1120px; margin: 0 auto; }

.fade-in > * { animation: rise .5s cubic-bezier(.2,.8,.2,1) both; }
.fade-in > *:nth-child(2) { animation-delay: .05s; }
.fade-in > *:nth-child(3) { animation-delay: .1s; }
.fade-in > *:nth-child(4) { animation-delay: .15s; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* ---------- Sync / Login / History ---------- */
.nav-links { flex: 1; justify-content: flex-end; }
.sync-pill { font-size: 12px; padding: 4px 10px 4px 20px; border-radius: 980px; background: var(--fill); color: var(--sub); white-space: nowrap; position: relative; flex: none; }
.sync-pill::before { content: ""; position: absolute; left: 9px; top: 50%; width: 6px; height: 6px; margin-top: -3px; border-radius: 50%; background: var(--sub); }
.sync-pill.ok::before { background: var(--green); }
.sync-pill.busy::before { background: var(--orange); animation: blink 1s infinite; }
.sync-pill.err { color: var(--red); }
.sync-pill.err::before { background: var(--red); }
@keyframes blink { 50% { opacity: .3; } }
.login .brand-mark.big { width: 64px; height: 64px; border-radius: 16px; font-size: 32px; margin: 0 auto 20px; }
.login-card { max-width: 380px; margin: 32px auto 0; text-align: left; display: flex; flex-direction: column; gap: 14px; }
.login-err { color: var(--red); font-size: 13px; min-height: 1em; }
.history { list-style: none; padding: 0; margin: 14px 0 0; max-height: 320px; overflow: auto; border-top: 1px solid var(--line); }
.history li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 13px; flex-wrap: wrap; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero { padding-top: 40px; }
  .hero-panel { grid-template-columns: 1fr; }
  .kanban { grid-template-columns: 1fr; }
  .section { margin-top: 40px; }
}
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { min-height: 100px; padding: 16px; }
  .stat-value { font-size: 30px; }
  .modal .form-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .nav-links a.soon { display: none; }
  .nav-links a { padding: 6px 8px; }
  .sync-pill { font-size: 0; padding: 0; width: 22px; height: 22px; }
  .sync-pill::before { left: 8px; }
}