:root{
  --night:#0c2236; --navy:#12324a; --ring:#1d4663; --ring2:#2a5876;
  --gold:#f2c35b; --gold2:#ffdf8e; --copper:#d98a4e;
  --cream:#fdf7ec; --peach:#efd5b7; --ink:#14283a; --muted:#566676;
  --r:24px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh;color:#fff;font-family:"Assistant","Segoe UI",system-ui,-apple-system,Arial,sans-serif;font-size:17px;line-height:1.5;overflow-x:hidden;
  background:radial-gradient(1200px 600px at 50% -10%,#24597b 0%,rgba(36,89,123,0) 60%),
             radial-gradient(800px 500px at 100% 40%,rgba(217,138,78,.16),transparent 70%),
             linear-gradient(180deg,var(--navy) 0%,var(--night) 55%,#08182a 100%);
  background-color:#08182a}
html{background:#08182a}
h1,h2,h3,.share-btn,.chip,.open-btn{font-family:"Varela Round","Assistant",system-ui,sans-serif}
a{color:inherit}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:3px solid var(--gold2);outline-offset:3px;border-radius:12px}

/* twinkling sky */
.sky{position:fixed;inset:0;pointer-events:none;z-index:0}
.sky i{position:absolute;left:var(--x);top:var(--y);width:4px;height:4px;border-radius:50%;background:var(--gold2);
  box-shadow:0 0 8px 2px rgba(255,223,142,.7);opacity:.25;animation:tw 3.6s ease-in-out infinite;animation-delay:var(--d)}
@keyframes tw{0%,100%{opacity:.15;transform:scale(.6)}50%{opacity:.95;transform:scale(1.25)}}

.corner-logo{position:fixed;top:max(10px,env(safe-area-inset-top));left:10px;z-index:20;width:52px;height:52px;border-radius:50%;
  box-shadow:0 4px 14px rgba(0,0,0,.35),0 0 0 2px rgba(242,195,91,.6);opacity:0;transform:scale(.7);transition:.3s;pointer-events:none}
.corner-logo img{width:100%;height:100%;border-radius:50%;display:block}
body.scrolled .corner-logo{opacity:1;transform:none;pointer-events:auto}

/* hero */
.hero{position:relative;z-index:1;text-align:center;padding:34px 18px 18px;max-width:900px;margin:0 auto}
.hero-logo{position:relative;width:176px;height:176px;margin:0 auto 10px}
.hero-logo img{position:relative;width:100%;height:100%;border-radius:50%;display:block;box-shadow:0 10px 34px rgba(0,0,0,.45),0 0 0 4px rgba(242,195,91,.85)}
.halo{position:absolute;inset:-22px;border-radius:50%;background:radial-gradient(circle,rgba(255,223,142,.55) 0%,rgba(242,195,91,.18) 45%,transparent 70%);animation:glow 3.2s ease-in-out infinite}
@keyframes glow{0%,100%{transform:scale(.94);opacity:.7}50%{transform:scale(1.06);opacity:1}}
.orbit{position:absolute;inset:-16px;animation:spin 14s linear infinite}
.orbit b{position:absolute;color:var(--gold2);font-size:20px;text-shadow:0 0 10px rgba(255,223,142,.9);font-weight:400}
.orbit b:nth-child(1){top:-6px;left:50%}
.orbit b:nth-child(2){bottom:8px;left:4px;font-size:15px}
.orbit b:nth-child(3){top:40%;right:-10px;font-size:13px}
@keyframes spin{to{transform:rotate(360deg)}}
.hero h1{margin:8px 0 0;font-size:clamp(38px,10vw,64px);line-height:1.1;font-weight:400;letter-spacing:.5px;color:var(--cream);
  text-shadow:0 2px 0 rgba(0,0,0,.25)}
.spark-word{background:linear-gradient(100deg,var(--gold2),var(--gold) 40%,var(--copper));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 14px rgba(242,195,91,.45))}
.tagline{margin:6px 0 0;font-family:"Varela Round",sans-serif;font-size:clamp(19px,5vw,26px);color:var(--gold2)}
.intro{margin:12px auto 0;max-width:520px;font-size:clamp(17px,4.4vw,20px);color:#e6eef5}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 14px;margin-top:18px}
.share-btn{appearance:none;border:0;cursor:pointer;font-size:17px;padding:13px 22px;border-radius:999px;color:var(--night);
  background:linear-gradient(180deg,var(--gold2),var(--gold));box-shadow:0 6px 18px rgba(242,195,91,.35),inset 0 -3px 0 rgba(0,0,0,.12);min-height:48px}
.share-btn:active{transform:translateY(1px)}
.count{font-size:15px;color:#c9d6e2;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:7px 14px;border-radius:999px}

/* topic navigation – first thing under the header */
main{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 14px 30px}
.topics{position:relative;z-index:2;max-width:980px;margin:4px auto 18px;padding:14px 12px 16px;
  background:linear-gradient(180deg,rgba(29,70,99,.72),rgba(12,34,54,.82));border:1px solid rgba(242,195,91,.28);border-radius:26px;
  box-shadow:0 12px 30px rgba(0,0,0,.3);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
@media (max-width:1004px){.topics{margin-inline:10px}}
.topics-title{margin:0 0 10px;text-align:center;font-size:clamp(19px,5vw,24px);font-weight:400;color:var(--gold2)}
.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}
.chip{flex:0 0 auto;appearance:none;cursor:pointer;font-size:17px;color:#fff;background:color-mix(in srgb,var(--c,#f2c35b) 22%,rgba(12,34,54,.6));
  border:2px solid color-mix(in srgb,var(--c,#f2c35b) 70%,transparent);
  border-radius:999px;padding:8px 14px;min-height:48px;display:inline-flex;align-items:center;gap:6px;transition:background .2s,border-color .2s,transform .12s;
  -webkit-tap-highlight-color:transparent}
.chip:active{transform:scale(.96)}
.chip .n{font-family:"Assistant",sans-serif;font-size:14px;font-weight:800;background:rgba(255,255,255,.2);border-radius:999px;padding:1px 8px;min-width:24px;text-align:center}
.chip[aria-pressed="true"]{background:var(--c,var(--gold));border-color:var(--c,var(--gold));color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.35);box-shadow:0 4px 14px rgba(0,0,0,.3),0 0 0 3px rgba(255,255,255,.35)}
.chip.all{--c:#f2c35b}
.chip.all[aria-pressed="true"]{color:var(--night);text-shadow:none}
.search{position:relative;display:block;max-width:600px;margin:14px auto 0}
.search input{width:100%;font:inherit;font-size:18px;color:var(--ink);background:var(--cream);border:2px solid transparent;border-radius:999px;
  padding:12px 50px 12px 46px;min-height:52px;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.search input:focus{outline:none;border-color:var(--gold)}
.search input::-webkit-search-cancel-button{display:none}
.search-ico{position:absolute;right:17px;top:50%;transform:translateY(-50%);font-size:19px}
.clear{position:absolute;left:8px;top:50%;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;border:0;background:#e8dcc8;color:var(--ink);font-size:16px;cursor:pointer}
.sortbar{display:flex;justify-content:space-between;align-items:center;gap:10px;max-width:1150px;margin:0 auto 16px;padding-top:4px;font-size:16px;font-weight:700;color:#dbe6ef;scroll-margin-top:8px}
.sort{display:flex;align-items:center;gap:6px;font-weight:400}
.sort select{font:inherit;font-size:15px;color:var(--ink);background:var(--cream);border:0;border-radius:12px;padding:6px 10px;min-height:38px}
main .hero-actions{margin:30px 0 0}

/* floating "back to topics" */
.to-topics{position:fixed;right:12px;bottom:calc(16px + env(safe-area-inset-bottom));z-index:30;display:inline-flex;align-items:center;gap:6px;
  font-family:"Varela Round",sans-serif;font-size:16px;text-decoration:none;color:var(--night);background:linear-gradient(180deg,var(--gold2),var(--gold));
  padding:10px 16px;min-height:46px;border-radius:999px;box-shadow:0 6px 18px rgba(0,0,0,.4);opacity:0;transform:translateY(20px);pointer-events:none;transition:.25s}
body.past-topics .to-topics{opacity:1;transform:none;pointer-events:auto}

/* staggered grid of cards */
.grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.grid{grid-template-columns:1fr 1fr;gap:22px}.grid .card:nth-child(2n){margin-top:26px}}
@media (min-width:1000px){.grid{grid-template-columns:repeat(3,1fr);gap:26px}
  .grid .card:nth-child(2n){margin-top:0}.grid .card:nth-child(3n+2){margin-top:34px}.grid .card:nth-child(3n){margin-top:12px}}
.card{position:relative;display:flex;flex-direction:column;border-radius:var(--r);overflow:hidden;color:var(--ink);
  background:linear-gradient(180deg,rgba(253,247,236,.98),rgba(250,240,224,.96));
  box-shadow:0 14px 34px rgba(0,0,0,.35),0 0 0 1px rgba(255,255,255,.35) inset;
  animation:rise .5s ease both;animation-delay:calc(var(--i,0) * 60ms);align-self:start}
@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.card::before{content:"";position:absolute;top:0;inset-inline:0;height:7px;background:linear-gradient(90deg,var(--c1),var(--c2));z-index:2}
.cover{position:relative;height:130px;display:grid;place-items:center;overflow:hidden;
  background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.55),transparent 55%),linear-gradient(135deg,var(--c1),var(--c2))}
.cover::after{content:"✦  ✧   ✦     ✧  ✦";position:absolute;bottom:10px;inset-inline:0;text-align:center;color:rgba(255,255,255,.65);font-size:13px;letter-spacing:4px}
.cover .em{font-size:64px;line-height:1;filter:drop-shadow(0 6px 10px rgba(0,0,0,.25));transform:rotate(-6deg)}
.badge{position:absolute;top:16px;right:14px;z-index:3;font-family:"Varela Round",sans-serif;font-size:15px;color:var(--night);
  background:linear-gradient(180deg,var(--gold2),var(--gold));padding:4px 12px;border-radius:999px;box-shadow:0 3px 10px rgba(0,0,0,.25);
  animation:pop 2.4s ease-in-out infinite}
@keyframes pop{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}
.body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h2{margin:0;font-size:22px;line-height:1.25;font-weight:400;color:var(--navy)}
.card p.desc{margin:0;color:#34495b;font-size:17px;line-height:1.45}
.tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:14px;font-weight:700;padding:3px 10px;border-radius:999px;background:color-mix(in srgb,var(--tc) 16%,#fff);color:color-mix(in srgb,var(--tc) 70%,#14283a);border:1px solid color-mix(in srgb,var(--tc) 35%,#fff)}
.tag.grade{--tc:#1d4663}
.open-btn{margin-top:auto;display:flex;align-items:center;justify-content:center;gap:10px;text-decoration:none;font-size:20px;color:#fff;
  min-height:56px;border-radius:18px;background:linear-gradient(180deg,var(--ring2),var(--navy));box-shadow:0 6px 0 #0a1d2e,0 10px 20px rgba(0,0,0,.25);
  transition:transform .12s,box-shadow .12s}
.open-btn .arr{color:var(--gold2);font-size:22px}
.open-btn:hover{background:linear-gradient(180deg,#336a8d,var(--ring))}
.open-btn:active{transform:translateY(4px);box-shadow:0 2px 0 #0a1d2e,0 4px 10px rgba(0,0,0,.25)}
mark{background:rgba(242,195,91,.55);color:inherit;border-radius:4px;padding:0 2px}
.empty{text-align:center;font-size:19px;color:#e6eef5;padding:30px 10px}

.foot{position:relative;z-index:1;text-align:center;padding:26px 16px calc(84px + env(safe-area-inset-bottom));color:var(--gold2);font-family:"Varela Round",sans-serif;font-size:19px}
.foot p{margin:4px 0}
.foot .small{font-family:"Assistant",sans-serif;font-size:14px;color:#9fb3c4}
.foot .visits{font-family:"Assistant",sans-serif;font-size:14px;color:#8fa5b8;margin-top:10px}

.toast{position:fixed;left:50%;bottom:calc(22px + env(safe-area-inset-bottom));transform:translate(-50%,40px);opacity:0;z-index:50;
  background:var(--cream);color:var(--ink);font-weight:700;padding:12px 20px;border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.4);transition:.3s;max-width:92vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:600px){.hero{padding:22px 16px 12px}.hero-logo{width:96px;height:96px;margin-bottom:4px}.halo{inset:-14px}.orbit{inset:-10px}.orbit b{font-size:15px}
  .hero h1{font-size:40px;margin-top:4px}.tagline{font-size:19px;margin-top:2px}.intro{font-size:16px;margin-top:6px}
  .cover{height:112px}.cover .em{font-size:56px}
  .topics{padding:12px 10px 14px;margin-inline:8px}
  .chips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .chip{position:relative;flex-direction:column;justify-content:center;gap:2px;min-height:76px;padding:10px 4px 8px;border-radius:18px;
    font-size:15px;line-height:1.15;text-align:center;white-space:normal}
  .chip .e{font-size:26px;line-height:1}
  .chip .n{position:absolute;top:5px;left:5px;font-size:12px;padding:0 6px;min-width:20px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

.grid.ready .card{animation:none}

/* ---- sharing ---- */
.top-share{margin-top:20px}
.share-btn.big{font-size:20px;padding:15px 28px;min-height:56px;font-weight:700;box-shadow:0 8px 24px rgba(242,195,91,.45),inset 0 -3px 0 rgba(0,0,0,.12)}
.ghost-btn{appearance:none;cursor:pointer;font-family:"Varela Round","Assistant",sans-serif;font-size:17px;color:var(--gold2);background:rgba(255,255,255,.06);
  border:2px solid rgba(242,195,91,.6);border-radius:999px;padding:12px 20px;min-height:52px}
.ghost-btn:active{transform:translateY(1px)}
.foot-share{margin:0 0 14px}
.foot-share .share-btn{font-size:18px}
.card-share{position:absolute;top:12px;left:12px;z-index:3;width:46px;height:46px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.92);box-shadow:0 3px 10px rgba(0,0,0,.25);font-size:22px;line-height:46px;padding:0;display:grid;place-items:center}
.card-share:active{transform:scale(.94)}
body.sheet-open{overflow:hidden}
.sheet-back{position:fixed;inset:0;z-index:60;background:rgba(6,18,30,.6);display:flex;align-items:flex-end;justify-content:center;opacity:0;transition:opacity .2s}
.sheet-back[hidden]{display:none}
.sheet-back.on{opacity:1}
.sheet{position:relative;width:100%;max-width:520px;max-height:92vh;overflow:auto;background:var(--cream);color:var(--ink);
  border-radius:26px 26px 0 0;padding:22px 18px calc(22px + env(safe-area-inset-bottom));box-shadow:0 -10px 40px rgba(0,0,0,.4);
  transform:translateY(30px);transition:transform .2s}
.sheet-back.on .sheet{transform:none}
@media (min-width:700px){.sheet-back{align-items:center}.sheet{border-radius:26px}}
.sheet h2{margin:0 0 4px;font-size:24px;font-weight:400;color:var(--navy);text-align:center}
.sh-sub{margin:0 0 16px;text-align:center;color:var(--muted);font-size:16px}
.sh-x{position:absolute;top:12px;left:12px;width:44px;height:44px;border-radius:50%;border:0;background:rgba(18,50,74,.08);font-size:20px;cursor:pointer;color:var(--navy)}
.sh-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sh-b{display:flex;align-items:center;justify-content:center;gap:8px;min-height:56px;border-radius:16px;border:0;cursor:pointer;text-decoration:none;
  font-family:"Varela Round","Assistant",sans-serif;font-size:18px;color:#fff;padding:10px}
.sh-b .i{font-size:22px}
.sh-b.wa{background:#1fa855}.sh-b.tg{background:#2a9fd8}.sh-b.mail{background:#d98a4e}.sh-b.fb{background:#3b6fd6}
.sh-b.copy{background:var(--navy);grid-column:1 / -1}
.sh-b.more{background:#fff;color:var(--navy);border:2px solid var(--navy);grid-column:1 / -1}
.sh-b:active{transform:translateY(1px)}
.sh-qr{margin-top:16px;text-align:center}
.sh-qr[hidden]{display:none}
.qr-frame{border:0;background:#fff;padding:8px;border-radius:16px;box-shadow:0 2px 10px rgba(0,0,0,.12);cursor:zoom-in}
.qr-frame canvas{display:block;width:150px;height:150px;image-rendering:pixelated}
.sh-qr.big .qr-frame{cursor:zoom-out}
.sh-qr.big .qr-frame canvas{width:min(78vw,60vh,420px);height:min(78vw,60vh,420px)}
.qr-note{margin:8px 0 0;font-size:15px;color:var(--muted)}
.sh-url{margin:12px 0 0;text-align:center;font-size:14px;color:var(--muted);word-break:break-all}

[hidden]{display:none !important}