:root {
  --ink:#171714;
  --paper:#f4f3ee;
  --card:#fff;
  --yellow:#ffe100;
  --muted:#73736d;
  --line:#d9d8d0;
  --green:#c9ff3d;
  --radius:22px;
  --font:'Inter','SF Pro Display',-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;
}
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--ink); background:var(--paper); font-family:var(--font); -webkit-font-smoothing:antialiased; }
button,a { font:inherit; }
button { color:inherit; }
a { color:inherit; text-decoration:none; }
.hidden { display:none !important; }
.topbar { height:64px; display:flex; align-items:center; justify-content:space-between; padding:0 max(22px,calc((100vw - 1180px)/2)); border-bottom:1px solid var(--line); background:rgba(244,243,238,.88); backdrop-filter:blur(18px); position:sticky; top:0; z-index:30; }
.brand { display:flex; align-items:center; gap:9px; font-size:15px; font-weight:900; letter-spacing:-.02em; }
.brand span { width:29px; height:29px; display:grid; place-items:center; border-radius:50%; background:var(--ink); color:var(--yellow); }
.back-link { font-size:12px; font-weight:750; padding:8px 12px; border:1px solid var(--line); border-radius:999px; }
main { overflow:hidden; }
.hero { max-width:1180px; min-height:520px; margin:0 auto; padding:74px 24px 64px; display:grid; grid-template-columns:minmax(0,1.25fr) minmax(360px,.75fr); align-items:center; gap:60px; }
.eyebrow,.section-index { margin:0 0 18px; font-size:11px; font-weight:900; letter-spacing:.15em; }
.hero h1 { margin:0; max-width:760px; font-size:clamp(54px,7.3vw,104px); line-height:.92; letter-spacing:-.075em; font-weight:900; }
.hero h1 em { color:#a09f98; font-style:normal; }
.hero-intro { max-width:630px; margin:28px 0 24px; color:#565650; font-size:17px; line-height:1.75; }
.hero-meta { display:flex; flex-wrap:wrap; gap:8px; }
.hero-meta span,.player-tags span { padding:7px 11px; border-radius:999px; background:#e7e6df; font-size:11px; font-weight:800; }
.hero-graphic { position:relative; min-height:390px; display:grid; place-items:center; }
.hero-graphic::before,.hero-graphic::after { content:""; position:absolute; border:1px solid #cbc9c0; border-radius:50%; }
.hero-graphic::before { width:350px; height:350px; }
.hero-graphic::after { width:280px; height:280px; }
.dial { position:relative; z-index:2; width:214px; height:214px; border-radius:50%; display:flex; flex-direction:column; align-items:center; justify-content:center; background:var(--yellow); box-shadow:0 26px 70px rgba(72,64,0,.17); transform:rotate(-7deg); }
.dial-kicker { font-size:10px; font-weight:900; letter-spacing:.16em; }
.dial strong { font-size:84px; line-height:.88; letter-spacing:-.08em; }
.dial small { margin-top:8px; font-size:10px; font-weight:900; }
.power-line { position:absolute; left:0; right:0; bottom:35px; height:80px; display:flex; align-items:flex-end; justify-content:center; gap:7px; opacity:.8; }
.power-line i { display:block; width:7px; background:var(--ink); border-radius:6px 6px 0 0; }
.power-line i:nth-child(1),.power-line i:nth-child(9) { height:10%; }.power-line i:nth-child(2),.power-line i:nth-child(8) { height:28%; }.power-line i:nth-child(3),.power-line i:nth-child(7) { height:52%; }.power-line i:nth-child(4),.power-line i:nth-child(6) { height:76%; }.power-line i:nth-child(5) { height:100%; background:var(--yellow); }
.builder,.library,.principles { padding:72px max(24px,calc((100vw - 1180px)/2)); }
.builder { background:var(--ink); color:#fff; }
.section-heading { display:flex; align-items:end; justify-content:space-between; gap:28px; margin-bottom:44px; }
.section-heading h2 { margin:0; font-size:clamp(38px,5vw,66px); line-height:1; letter-spacing:-.055em; }
.section-heading .section-index { color:var(--yellow); }
.saved-summary,.library-heading>p { margin:0; color:#a5a59e; font-size:12px; }
.choice-block { display:grid; grid-template-columns:150px 1fr; gap:24px; align-items:start; margin-bottom:28px; }
.choice-label { margin:18px 0 0; color:#aaa9a1; font-size:12px; font-weight:850; }
.segmented,.level-options { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.segmented button,.level-options button { min-height:108px; border:1px solid #3a3a35; border-radius:18px; background:#22221e; color:#fff; cursor:pointer; transition:.18s ease; }
.segmented button { display:flex; align-items:center; justify-content:center; gap:16px; text-align:left; }
.segmented strong { font-size:48px; letter-spacing:-.06em; }
.segmented span { color:#9a9a93; font-size:11px; line-height:1.5; font-weight:750; }
.segmented button.active,.level-options button.active { border-color:var(--yellow); background:var(--yellow); color:var(--ink); transform:translateY(-2px); }
.segmented button.active span,.level-options button.active small { color:#5b5200; }
.level-options button { display:grid; grid-template-columns:auto 1fr; grid-template-rows:auto auto; align-items:center; text-align:left; padding:18px; column-gap:13px; }
.level-options button>span { grid-row:1/3; width:42px; height:42px; display:grid; place-items:center; border:1px solid currentColor; border-radius:50%; font-size:12px; font-weight:900; }
.level-options strong { font-size:18px; }.level-options small { color:#999992; font-size:11px; margin-top:3px; }
.plan-panel { margin-top:48px; padding:28px; border-radius:var(--radius); background:#2a2a25; display:flex; justify-content:space-between; align-items:center; gap:24px; }
.plan-summary p { margin:0 0 7px; color:#aaa9a1; font-size:11px; font-weight:800; }.plan-summary h3 { margin:0 0 8px; font-size:26px; }.plan-summary span { color:#bcbcb4; font-size:13px; line-height:1.5; }
.start-button { min-width:192px; min-height:58px; display:flex; align-items:center; justify-content:space-between; gap:20px; padding:8px 10px 8px 23px; border:0; border-radius:999px; background:var(--yellow); color:var(--ink); font-weight:900; cursor:pointer; }
.start-button b { width:42px; height:42px; display:grid; place-items:center; background:var(--ink); color:var(--yellow); border-radius:50%; font-size:20px; }
.plan-exercises { margin-top:12px; display:grid; }
.plan-row { display:grid; grid-template-columns:56px minmax(180px,.8fr) minmax(240px,1.4fr) auto; gap:18px; align-items:center; padding:17px 8px; border-bottom:1px solid #33332e; }
.plan-row>span { color:#77776f; font-size:11px; font-weight:900; }.plan-row strong { font-size:15px; }.plan-row p { margin:0; color:#9e9e96; font-size:12px; line-height:1.5; }.plan-row small { color:#d6d5cf; font-size:11px; }
.library { background:#eeede7; }
.library-heading .section-index { color:#76766f; }.library-heading>p { max-width:260px; text-align:right; }
.filter-row { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:26px; }
.filter-row button { border:1px solid #cfcec6; background:transparent; padding:9px 14px; border-radius:999px; font-size:11px; font-weight:800; cursor:pointer; }
.filter-row button.active { color:var(--yellow); background:var(--ink); border-color:var(--ink); }
.arch-note { margin:0 0 18px; padding:23px; display:grid; grid-template-columns:130px 1fr; gap:28px; border-radius:var(--radius); background:var(--yellow); }
.arch-note>span { font-size:10px; font-weight:950; letter-spacing:.14em; }
.arch-note strong { display:block; max-width:760px; font-size:18px; line-height:1.4; }
.arch-note p { margin:9px 0 0; max-width:820px; color:#5a5100; font-size:12px; line-height:1.75; }
.arch-note a { display:inline-block; margin-left:8px; color:var(--ink); font-weight:900; text-decoration:underline; text-underline-offset:3px; }
.exercise-library { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.exercise-card { min-height:290px; background:#fff; border:1px solid #dfded7; border-radius:var(--radius); padding:24px; display:flex; flex-direction:column; }
.exercise-card-head { display:flex; justify-content:space-between; align-items:start; gap:20px; }
.exercise-card-index { color:#a09f98; font-size:11px; font-weight:900; }.exercise-card h3 { margin:8px 0 0; font-size:25px; letter-spacing:-.04em; }
.muscle-chip { flex:0 0 auto; padding:7px 10px; border-radius:999px; background:#f1f0ea; font-size:10px; font-weight:800; }
.progression { margin-top:auto; display:grid; gap:7px; padding-top:28px; }
.progression-row { display:grid; grid-template-columns:34px 1fr; gap:11px; align-items:center; padding-top:8px; border-top:1px solid #ecebe6; }
.progression-row span { width:29px; height:29px; display:grid; place-items:center; border-radius:50%; background:#edede7; font-size:9px; font-weight:900; }.progression-row strong { font-size:12px; }
.exercise-cue { margin:18px 0 0; color:#75756e; font-size:12px; line-height:1.65; }
.principles { background:var(--yellow); display:grid; grid-template-columns:.65fr 1.35fr; gap:80px; }
.principles h2 { margin:0; font-size:clamp(38px,5vw,64px); line-height:.96; letter-spacing:-.055em; }
.principle-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.principle-grid article { min-height:245px; padding:20px; border:1px solid rgba(23,23,20,.24); border-radius:18px; display:flex; flex-direction:column; }
.principle-grid article>span { font-size:10px; font-weight:900; }.principle-grid h3 { margin:auto 0 10px; font-size:24px; }.principle-grid p { margin:0; color:#504900; font-size:12px; line-height:1.7; }
footer { padding:34px max(24px,calc((100vw - 1180px)/2)); display:flex; justify-content:space-between; gap:20px; color:#8a8981; background:var(--ink); font-size:10px; letter-spacing:.08em; }footer p { margin:0; max-width:520px; text-align:right; line-height:1.5; }
.workout-player { position:fixed; inset:0; z-index:100; background:var(--ink); color:#fff; display:flex; flex-direction:column; padding:24px max(20px,calc((100vw - 920px)/2)) max(22px,env(safe-area-inset-bottom)); }
.player-top { display:grid; grid-template-columns:48px 1fr 48px; align-items:center; text-align:center; }.player-top>div span,.player-top>div small { display:block; }.player-top>div span { font-size:12px; font-weight:900; letter-spacing:.08em; }.player-top>div small { color:#86867f; font-size:10px; margin-top:3px; }
.icon-button { width:43px; height:43px; border:1px solid #41413b; border-radius:50%; background:transparent; color:#fff; font-size:24px; cursor:pointer; }.icon-button.sound-on { color:var(--yellow); }
.progress-track { height:3px; margin-top:22px; background:#353530; overflow:hidden; }.progress-track span { display:block; width:0; height:100%; background:var(--yellow); transition:width .2s linear; }
.player-stage { flex:1; min-height:0; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; padding:24px 0; }
.interval-type { margin:0 0 22px; color:var(--yellow); font-size:11px; font-weight:900; letter-spacing:.16em; }
.timer-ring { width:min(40vh,310px); aspect-ratio:1; border:1px solid #4a4a43; border-radius:50%; display:flex; flex-direction:column; align-items:center; justify-content:center; position:relative; }
.timer-ring::before { content:""; position:absolute; inset:13px; border:1px solid #30302b; border-radius:50%; }.timer-ring strong { position:relative; font-size:clamp(58px,10vw,104px); line-height:.9; letter-spacing:-.075em; font-variant-numeric:tabular-nums; }.timer-ring span { position:relative; margin-top:12px; color:#8f8f87; font-size:11px; font-weight:800; }
.player-stage h2 { margin:28px 0 10px; font-size:clamp(30px,5vw,56px); letter-spacing:-.045em; }.player-stage>p:not(.interval-type) { max-width:600px; margin:0; color:#aaa9a1; font-size:14px; line-height:1.65; }.player-tags { display:flex; gap:6px; margin-top:18px; }.player-tags span { background:#292924; color:#d4d3cc; }
.next-up { width:min(580px,100%); margin-top:22px; padding-top:17px; border-top:1px solid #34342f; display:flex; justify-content:space-between; gap:20px; color:#75756f; font-size:11px; }.next-up strong { color:#c9c8c0; font-size:12px; }
.player-controls { display:grid; grid-template-columns:1fr 1.2fr 1fr; gap:8px; }.player-controls button { min-height:50px; border:1px solid #41413b; border-radius:999px; background:transparent; color:#aaa9a1; font-size:12px; font-weight:800; cursor:pointer; }.player-controls .pause-button { background:var(--yellow); border-color:var(--yellow); color:var(--ink); font-size:14px; }
.completion-card { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; }.completion-card .eyebrow { color:var(--yellow); }.completion-card h2 { margin:0; font-size:clamp(52px,9vw,96px); letter-spacing:-.07em; }.completion-card>p:not(.eyebrow) { color:#aaa9a1; }.completion-card .start-button { margin-top:24px; }
button:focus-visible,a:focus-visible { outline:3px solid var(--green); outline-offset:3px; }
@media (max-width:800px) {
  .hero { min-height:auto; grid-template-columns:1fr; padding-top:52px; }.hero-graphic { min-height:320px; }.hero-graphic::before { width:300px;height:300px; }.hero-graphic::after { width:240px;height:240px; }.dial { width:184px;height:184px; }.dial strong { font-size:70px; }
  .choice-block { grid-template-columns:1fr; gap:10px; }.choice-label { margin:0; }.plan-row { grid-template-columns:40px 1fr auto; }.plan-row p { grid-column:2/4; }.exercise-library { grid-template-columns:1fr; }.principles { grid-template-columns:1fr; gap:36px; }.principle-grid { grid-template-columns:1fr; }.principle-grid article { min-height:180px; }.principle-grid h3 { margin:34px 0 10px; }
  .arch-note { grid-template-columns:1fr; gap:12px; }
}
@media (max-width:560px) {
  .topbar { height:58px; padding-inline:15px; }.hero { padding:42px 16px 44px; gap:18px; }.hero h1 { font-size:53px; }.hero-intro { font-size:14px; }.hero-graphic { min-height:285px; transform:scale(.88); }
  .builder,.library,.principles { padding:52px 16px; }.section-heading { display:block; margin-bottom:34px; }.saved-summary,.library-heading>p { margin-top:14px; text-align:left; }.section-heading h2 { font-size:44px; }
  .segmented,.level-options { gap:6px; }.segmented button { min-height:92px; gap:7px; flex-direction:column; text-align:center; }.segmented strong { font-size:38px; line-height:.8; }.segmented span br { display:none; }.level-options button { min-height:104px; display:flex; flex-direction:column; justify-content:center; text-align:center; padding:10px 5px; gap:6px; }.level-options button>span { width:32px;height:32px; }.level-options small { display:none; }
  .plan-panel { align-items:stretch; flex-direction:column; padding:21px; margin-top:34px; }.start-button { width:100%; }.plan-row { padding:15px 2px; gap:10px; }.plan-row small { display:none; }
  .exercise-card { min-height:270px; padding:20px; }.principle-grid { gap:8px; }footer { flex-direction:column; }footer p { text-align:left; }
  .workout-player { padding:16px 15px max(16px,env(safe-area-inset-bottom)); }.progress-track { margin-top:14px; }.player-stage { padding:14px 0; }.timer-ring { width:min(31vh,230px); }.timer-ring strong { font-size:62px; }.player-stage h2 { margin-top:18px; font-size:32px; }.next-up { margin-top:15px; }.player-controls button { min-height:46px; }
}
@media (prefers-reduced-motion:reduce) { * { scroll-behavior:auto !important; transition:none !important; } }