:root{
  --bg:#0B1020;--bg-2:#11182E;--line:rgba(255,255,255,.1);--line-2:rgba(255,255,255,.16);
  --text:#F4F6FB;--muted:#A9B3CC;--dim:#7C88A6;
  --orange:#F97316;--orange-2:#FB923C;--green:#4ADE80;--cyan:#38BDF8;--link:#93C5FD;
  --maxw:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Roboto Mono",monospace;
}
/* Mobile App Idea Research. Generated from ideas-site/assets/ideas.css by ideas-site/build.py.
   The first :root block above this comment comes from site/assets/site.css, so the tokens stay in sync. */
:root{--bg-3:#172140;--input:#0E1426}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:16px}
body{margin:0;background:var(--bg);color:var(--text);font:400 1rem/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:inherit}
svg{display:block;max-width:100%}
h1,h2,h3{margin:0;line-height:1.15;letter-spacing:-.02em;text-wrap:balance}
p{margin:0;text-wrap:pretty}
ul,ol,dl,dd{margin:0;padding:0;list-style:none}
button,select,input{font:inherit;color:inherit}
s{text-decoration-thickness:2px}
[hidden]{display:none!important}
.wrap{width:min(100% - 32px,var(--maxw));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-80px;z-index:100;background:var(--text);color:var(--bg);padding:10px 14px;border-radius:10px;font-weight:700}
.skip:focus{top:12px}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.ico{width:1em;height:1em;flex:none}
.kicker{display:inline-block;font:650 .78rem/1.3 var(--mono);color:var(--orange-2);letter-spacing:.02em}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55em;min-height:54px;padding:0 1.5rem;border-radius:12px;border:1px solid transparent;font-weight:750;font-size:1.06rem;line-height:1.2;text-align:center;text-decoration:none;cursor:pointer;transition:background-color .15s,border-color .15s,transform .15s}
.btn:active{transform:translateY(1px)}
.btn .ico{width:1.1em;height:1.1em}
.btn-primary{background:var(--orange);color:#0B1020;box-shadow:0 10px 28px -10px rgba(249,115,22,.75),inset 0 -2px 0 rgba(0,0,0,.18)}
.btn-primary:hover{background:var(--orange-2)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line-2);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,255,255,.35)}
.btn-sm{min-height:44px;padding:0 .95rem;font-size:.9rem;border-radius:10px;box-shadow:none;white-space:nowrap}

/* Header */
.topbar{position:relative;z-index:5;border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:62px}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px;text-decoration:none;font-weight:800;font-size:.98rem;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{flex:none;width:30px;height:30px;border-radius:8px;box-shadow:0 0 0 1px var(--line-2)}
.brand-sub{display:none;font-weight:600;color:var(--muted)}
.topnav{display:flex;align-items:center;gap:4px}
.topnav .nl{display:inline-flex;align-items:center;min-height:44px;padding:0 10px;color:var(--muted);text-decoration:none;font-size:.93rem;font-weight:650;white-space:nowrap;border-radius:10px}
.topnav .nl:hover,.topnav .nl[aria-current]{color:var(--text)}
.topnav .btn{display:none;margin-left:8px}
@media (min-width:560px){.brand-sub{display:inline}}
@media (min-width:720px){.topnav .btn{display:inline-flex}}

/* Index hero */
.ih{position:relative;overflow:hidden;padding:30px 0 26px}
.ih::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.075) 1px,transparent 1.2px);background-size:22px 22px;-webkit-mask-image:linear-gradient(#000 25%,transparent 92%);mask-image:linear-gradient(#000 25%,transparent 92%);pointer-events:none}
.ih::after{content:"";position:absolute;right:-180px;top:-240px;width:620px;height:620px;border-radius:50%;background:radial-gradient(closest-side,rgba(249,115,22,.22),rgba(249,115,22,0));pointer-events:none}
.ih .wrap{position:relative;z-index:1}
.ih h1{margin-top:12px;font-size:clamp(2.1rem,6vw + .85rem,3.7rem);font-weight:850;letter-spacing:-.03em;line-height:1.06}
.lede{margin-top:12px;max-width:48rem;color:var(--muted);font-size:1.05rem}
@media (min-width:960px){.ih{padding:60px 0 40px}.lede{max-width:54rem;font-size:1.14rem}}

/* Search */
.search{display:flex;align-items:center;gap:10px;max-width:760px;min-height:60px;margin-top:20px;padding:0 16px;background:var(--input);border:1px solid var(--line-2);border-radius:14px;box-shadow:0 24px 60px -32px rgba(0,0,0,.9);transition:border-color .15s,box-shadow .15s}
.search:focus-within{border-color:var(--orange);box-shadow:0 0 0 3px rgba(249,115,22,.24)}
.search-p{flex:none;color:var(--orange);font:750 1rem/1 var(--mono)}
.search input{flex:1;min-width:0;height:58px;padding:0;background:none;border:0;outline:0;font-size:1.06rem;font-weight:500;-webkit-appearance:none;appearance:none}
.search input::placeholder{color:var(--dim);opacity:1}
.search input:placeholder-shown{text-overflow:ellipsis}
.search input::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none;width:18px;height:18px;margin-left:8px;cursor:pointer;background:var(--dim);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 6l12 12M18 6L6 18' stroke='%23000' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 6l12 12M18 6L6 18' stroke='%23000' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat}
.search kbd{display:none;flex:none;padding:3px 8px;border:1px solid var(--line-2);border-radius:6px;color:var(--dim);font:600 .76rem/1.2 var(--mono)}
@media (hover:hover) and (pointer:fine){.search:not(:focus-within) kbd{display:block}}
@media (min-width:960px){.search{min-height:68px;padding:0 20px}.search input{height:66px;font-size:1.16rem}}

/* Filters */
.results{padding:6px 0 56px}
.chips{display:flex;gap:8px;margin-inline:-16px;padding:2px 16px 6px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:0 14px;background:rgba(255,255,255,.035);border:1px solid var(--line-2);border-radius:999px;color:var(--muted);font-size:.91rem;font-weight:650;text-decoration:none;white-space:nowrap;transition:border-color .15s,color .15s,background-color .15s}
.chip b{font:600 .74rem/1 var(--mono);color:var(--dim)}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.35)}
.chip[aria-current]{background:var(--orange);border-color:var(--orange);color:#0B1020}
.chip[aria-current] b{color:rgba(11,16,32,.72)}
@media (min-width:760px){.chips{flex-wrap:wrap;margin-inline:0;padding:2px 0 6px;overflow:visible}}
.bar{display:grid;gap:10px;margin-top:8px}
.selects{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.field{display:flex;flex-direction:column;gap:3px;min-width:0}
.field>span{font:600 .72rem/1.3 var(--mono);color:var(--dim)}
.field select{width:100%;min-height:44px;padding:0 21px 0 9px;background:var(--input) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6' fill='none' stroke='%237C88A6' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat right 5px center/15px;border:1px solid var(--line-2);border-radius:10px;font-size:1rem;font-weight:600;text-overflow:ellipsis;-webkit-appearance:none;appearance:none;cursor:pointer}
.field select:hover{border-color:rgba(255,255,255,.35)}
@media (min-width:760px){.field select{padding:0 26px 0 12px;font-size:.92rem;background-position:right 8px center}}
.count-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 14px;min-height:44px}
.count{color:var(--muted);font:600 .86rem/1.4 var(--mono)}
.rank-note{margin-bottom:6px;color:var(--dim);font-size:.82rem;line-height:1.4}
.linkish{min-height:44px;padding:0 2px;background:none;border:0;color:var(--link);font-size:.92rem;font-weight:650;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
@media (min-width:760px){
  .bar{grid-template-columns:1fr auto;align-items:end;gap:16px;margin-top:10px}
  .selects{grid-template-columns:repeat(3,172px);order:2}
  .count-row{justify-content:flex-start}
}
.nojs{margin-bottom:14px;padding:12px 14px;border-left:3px solid var(--orange);border-radius:0 12px 12px 0;background:rgba(249,115,22,.08);color:var(--muted);font-size:.95rem}

/* Empty state */
.empty{margin-top:12px;padding:22px 20px;border:1px dashed var(--line-2);border-radius:16px}
.empty h3{font-size:1.2rem;font-weight:800;word-break:break-word}
.empty p{margin-top:6px;color:var(--muted)}
.empty-try{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.empty .btn{margin-top:14px}

/* Grid and cards */
.grid{display:grid;gap:12px;margin-top:8px;grid-auto-flow:dense}
@media (min-width:640px){.grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.idea{display:flex;min-width:0}
.idea>a{position:relative;display:flex;flex-direction:column;gap:7px;width:100%;padding:18px;background:var(--bg-2);border:1px solid var(--line);border-radius:16px;text-decoration:none;transition:transform .2s ease,border-color .2s ease}
@media (hover:hover) and (pointer:fine){.idea>a:hover{border-color:rgba(249,115,22,.5)}}
@media (hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference){.idea>a:hover{transform:translateY(-3px)}}
.idea-top{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font:600 .74rem/1.35 var(--mono)}
.idea-rank{flex:none;color:var(--dim)}
.idea-cat{color:var(--cyan);text-align:right}
.idea h3{font-size:1.1rem;font-weight:800;line-height:1.25}
.idea-one{color:var(--muted);font-size:.95rem;line-height:1.5}
.idea-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:7px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 8px;border:1px solid var(--line);border-radius:6px;background:rgba(255,255,255,.03);color:var(--muted);font:600 .72rem/1.25 var(--mono)}
.meter{display:inline-flex;align-items:flex-end;gap:2px;flex:none}
.meter i{display:block;width:4px;background:rgba(255,255,255,.2);border-radius:1px}
.meter i:nth-child(1){height:6px}
.meter i:nth-child(2){height:9px}
.meter i:nth-child(3){height:12px}
.meter[data-level="1"] i:nth-child(-n+1),.meter[data-level="2"] i:nth-child(-n+2),.meter[data-level="3"] i{background:var(--green)}
.band-pill{color:var(--text)}
@keyframes idea-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:no-preference){
  .grid:not(.live)>.idea{animation:idea-in .42s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--i,0)*38ms)}
  .grid.live>.idea.enter{animation:idea-in .26s ease-out both}
}

/* Course banner inside the grid */
.promo{grid-column:1/-1;display:grid;gap:14px;padding:20px;background:linear-gradient(120deg,rgba(249,115,22,.2),var(--bg-2) 62%);border:1px solid rgba(249,115,22,.5);border-radius:16px}
.promo-title{margin-top:6px;font-size:1.28rem;font-weight:850;line-height:1.2;letter-spacing:-.02em}
.promo-text{margin-top:6px;color:var(--muted);font-size:.97rem;max-width:44rem}
.promo-cta{display:grid;gap:8px}
@media (min-width:760px){
  .promo{grid-template-columns:1fr auto;align-items:center;gap:24px;padding:22px 24px}
  .promo-cta{min-width:230px}
}

/* Breadcrumbs */
.crumbs{padding-top:10px}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center}
.crumbs li{display:flex;align-items:center}
.crumbs li+li::before{content:"/";padding:0 8px;color:var(--dim);font-family:var(--mono)}
.crumbs a{display:inline-flex;align-items:center;min-width:44px;min-height:44px;color:var(--muted);font-size:.9rem;font-weight:600;text-decoration:none}
.crumbs a:hover{color:var(--text);text-decoration:underline}

/* Idea page */
.idea-head{padding:12px 0 22px}
.idea-head h1{margin-top:10px;font-size:clamp(1.95rem,4.6vw + .9rem,3.2rem);font-weight:850;letter-spacing:-.03em;line-height:1.08}
.jump{display:inline-flex;align-items:center;gap:8px;min-height:44px;margin-top:8px;color:var(--orange-2);font-size:.95rem;font-weight:700;text-decoration:underline;text-underline-offset:3px}
.cols{display:grid;gap:30px;padding-bottom:44px}
.col-main{min-width:0}
.facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.fact{min-width:0;padding:12px 14px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px}
.fact:first-child{grid-column:1/-1}
.fact dt{font:600 .72rem/1.3 var(--mono);color:var(--dim)}
.fact dd{margin-top:3px;font-weight:700;line-height:1.3}
@media (min-width:640px){.facts{grid-template-columns:repeat(3,minmax(0,1fr))}.fact:first-child{grid-column:auto}}
.signal{margin-top:8px;padding:16px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px}
.signal-top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px}
.signal-k{font:600 .72rem/1.3 var(--mono);color:var(--dim)}
.est{padding:4px 8px;border:1px solid rgba(56,189,248,.4);border-radius:6px;color:var(--cyan);font:650 .7rem/1.2 var(--mono)}
.signal-main{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;margin-top:8px}
.signal-main .meter i{width:7px}
.signal-main .meter i:nth-child(1){height:10px}
.signal-main .meter i:nth-child(2){height:16px}
.signal-main .meter i:nth-child(3){height:22px}
.signal-main b{font-size:1.4rem;font-weight:850;letter-spacing:-.02em;line-height:1.2}
.signal-band{font:650 .92rem/1.3 var(--mono);color:var(--muted)}
.signal-sub{margin-top:4px;color:var(--muted);font-size:.94rem}
.signal-note{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line-2);color:var(--dim);font-size:.84rem;line-height:1.5}
.signal-src{display:block;margin-top:6px}
.sec{margin-top:30px}
.sec h2{font-size:1.32rem;font-weight:800}
.sec p{margin-top:8px;max-width:44rem;color:#C7CFE2;font-size:1.03rem;line-height:1.65}
.sec p+p{margin-top:12px}
.apps{display:grid;gap:8px;margin-top:12px}
.apps a{display:flex;align-items:center;gap:10px;min-height:52px;padding:8px 14px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;text-decoration:none;transition:border-color .15s}
.apps a:hover{border-color:rgba(255,255,255,.35)}
.app-name{flex:1;min-width:0;font-weight:700;line-height:1.3;overflow-wrap:anywhere}
.app-host{flex:none;max-width:45%;color:var(--dim);font:550 .76rem/1.3 var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.apps .ico{color:var(--dim);width:15px;height:15px}
.watch{padding:16px 18px;border-left:3px solid var(--orange);border-radius:0 12px 12px 0;background:rgba(249,115,22,.08)}
.watch p{margin-top:6px}
.kw{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.kw a{display:inline-flex;align-items:center;min-height:44px;padding:0 13px;background:rgba(255,255,255,.035);border:1px solid var(--line-2);border-radius:999px;color:var(--muted);font:600 .84rem/1.2 var(--mono);text-decoration:none;transition:color .15s,border-color .15s}
.kw a:hover{color:var(--text);border-color:rgba(255,255,255,.35)}
.related{padding-bottom:56px}
.related h2{font-size:1.32rem;font-weight:800}
.related .sub{margin-top:4px;color:var(--muted);font-size:.97rem}
.grid-related{margin-top:14px}
@media (min-width:1024px){.grid-related.n4{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (min-width:960px){
  .cols{grid-template-columns:minmax(0,1fr) 372px;gap:44px;align-items:start;padding-bottom:64px}
  .col-side{position:sticky;top:16px}
  .jump{display:none}
  .idea-head{padding:18px 0 28px}
}

/* Locked panel */
.locked{padding:22px 20px;background:linear-gradient(180deg,#151E3B,#0F1530);border:1px solid rgba(249,115,22,.5);border-radius:18px;box-shadow:0 30px 80px -44px rgba(249,115,22,.6)}
.locked h2{margin-top:8px;font-size:1.34rem;font-weight:850}
.locked-list{display:grid;gap:0;margin-top:12px}
.locked-list li{display:grid;grid-template-columns:18px minmax(0,1fr);align-items:start;column-gap:10px;padding:9px 0;border-top:1px dashed rgba(255,255,255,.1);font-weight:650;font-size:.97rem;line-height:1.35}
.locked-list li:first-child{border-top:0}
.locked-list .ico{margin-top:2px;width:16px;height:16px;color:var(--orange-2)}
.locked-bar{display:block;grid-column:2;height:8px;margin-top:6px;border-radius:4px;background:repeating-linear-gradient(90deg,rgba(255,255,255,.14) 0 16px,rgba(255,255,255,.05) 16px 20px)}
.locked-list li:nth-child(odd) .locked-bar{width:86%}
.locked-list li:nth-child(even) .locked-bar{width:62%}
.locked .btn{width:100%;margin-top:14px}
.locked-line{margin-top:12px;color:var(--muted);font-size:.93rem;line-height:1.5}
.locked-price{display:block;margin-top:6px;color:var(--text);font-weight:700}
.locked-price s{color:var(--dim);font-weight:600}
.locked-more{display:inline-flex;align-items:center;min-height:44px;margin-top:4px;color:var(--link);font-size:.93rem;font-weight:650}

/* Category pages */
.cat-head{padding:12px 0 18px}
.cat-head h1{margin-top:10px;font-size:clamp(1.95rem,4.6vw + .9rem,3.2rem);font-weight:850;letter-spacing:-.03em;line-height:1.08}
.cat-others{margin-top:36px;padding:6px 0 56px}
.cat-others h2{margin-bottom:12px;font-size:1.32rem;font-weight:800}
.cat-others .chips{flex-wrap:wrap;margin-inline:0;padding:0;overflow:visible}

/* Course strip */
.strip{border-top:1px solid var(--line);background:#0D1326}
.strip-in{display:grid;gap:18px;padding:34px 0}
.strip-title{margin-top:8px;font-size:clamp(1.3rem,2vw + .9rem,1.75rem);font-weight:850;line-height:1.2;letter-spacing:-.02em}
.strip-text{margin-top:8px;max-width:44rem;color:var(--muted)}
.strip-cta{display:grid;gap:8px}
@media (min-width:760px){
  .strip-in{grid-template-columns:1fr auto;align-items:center;gap:32px;padding:44px 0}
  .strip-cta{min-width:250px}
}

/* Footer */
.footer{border-top:1px solid var(--line);padding:22px 0 36px;color:var(--dim);font-size:.88rem;line-height:1.55}
.footer nav{display:flex;flex-wrap:wrap;gap:0 18px}
.footer nav a,.support a{display:inline-flex;align-items:center;min-width:44px;min-height:44px;color:var(--muted);text-decoration:none}
.footer nav a:hover,.support a:hover{color:var(--text);text-decoration:underline}
.support{display:flex;flex-wrap:wrap;align-items:center;gap:0 6px}
.footer p{max-width:62rem}
.footer p+p{margin-top:10px}