/* NEBians landing, Material 3 Expressive.
   What makes it expressive here, and where to change it:
   - Shape: tiles, avatars, icons and blobs are clipped to polygons that all have the same point
     count (landing-shapes.css, generated), so any shape can morph into any other with a plain
     CSS transition. Classes: .shp-cookie .shp-sunny .shp-flower .shp-clover .shp-burst
     .shp-gem .shp-circle .shp-squircle .shp-pebble. Each sets --shape and --alt.
   - Motion: springs, not eases. --spring / --spring-soft / --spring-fast overshoot and settle.
     Buttons squish on press and square their corners on hover.
   - Colour: tonal containers (azure, sky, aqua, peri) on a warm surface, one strong primary.
     No gradients, no shadows: separation comes from tone and shape only.
   - Type: Display (Bricolage Grotesque, heavy) for headings, Body (Figtree) for the rest.
   Animations touch transform, opacity and clip-path only, and every looping one pauses when
   its [data-live] ancestor is off screen (landing.js). */

:root{
  --pad:clamp(20px,4vw,56px);--max:1240px;--gap:clamp(8px,1.6vw,20px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:96px;scroll-behavior:smooth}
body.lp{margin:0;background:var(--surface);color:var(--on);font:500 17px/1.6 var(--body);-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding:0;list-style:none}
svg{display:block;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
img{display:block;max-width:100%}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.sr{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.skip{position:fixed;left:16px;top:-80px;z-index:100;background:var(--ink);color:var(--on-ink);padding:12px 20px;border-radius:16px;font-weight:700}
.skip:focus{top:16px}

/* ---------- type ---------- */
.display,.h2,h3,.brand-name,.lv-btn,.lv-sub,.thread-title,.foot-word{font-family:var(--display);letter-spacing:-.02em}
.display{font-weight:800;font-size:clamp(44px,5.7vw,88px);line-height:1;letter-spacing:-.03em}
.h2{font-weight:800;font-size:clamp(36px,5.2vw,76px);line-height:1.02;letter-spacing:-.03em;text-wrap:balance}

.m3-btn .play{width:24px;height:24px;stroke:none}

/* ---------- navigation ---------- */
.nav{position:fixed;z-index:50;top:12px;left:50%;translate:-50% 0;width:min(1180px,calc(100% - 24px));height:68px;padding:0 12px 0 10px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-radius:34px;background:color-mix(in srgb,var(--md-surface) 88%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border:1px solid var(--outline-var);transition:background-color .3s,border-radius .5s var(--spring)}
.nav.is-scrolled{background:color-mix(in srgb,var(--sf) 94%,transparent)}
.nav-end{display:flex;align-items:center;gap:6px;flex:none}
.burger{display:none;position:relative;width:48px;height:48px;border:0;border-radius:24px;background:var(--sf-high);cursor:pointer;transition:border-radius .5s var(--spring),transform .4s var(--spring)}
.burger:active{transform:scale(.92);border-radius:14px}
.burger i{position:absolute;left:14px;right:14px;height:2.5px;border-radius:2px;background:var(--on);transition:transform .5s var(--spring),opacity .2s}
.burger i:nth-child(1){top:16px}.burger i:nth-child(2){top:23px}.burger i:nth-child(3){top:30px}
.menu-open .burger i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-open .burger i:nth-child(2){opacity:0}
.menu-open .burger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.menu{position:fixed;inset:0;z-index:40;display:flex;align-items:center;padding:96px var(--pad) 40px;background:var(--azure-c);clip-path:circle(0 at calc(100% - 46px) 46px);visibility:hidden;transition:clip-path .9s var(--spring-soft),visibility 0s .9s}
.menu-open .menu{clip-path:circle(150% at calc(100% - 46px) 46px);visibility:visible;transition-delay:0s}
.menu-open{overflow:hidden}
.menu nav{display:flex;flex-direction:column;gap:4px}
.menu a{display:block;font:800 clamp(42px,13vw,72px)/1.1 var(--display);letter-spacing:-.03em;color:var(--on-c);opacity:0;transform:translateY(32px);transition:opacity .3s,transform .7s var(--spring)}
.menu-open .menu a{opacity:1;transform:none;transition-delay:calc(var(--i)*60ms + 180ms)}
.menu a:active{color:var(--pri)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:clamp(108px,13vw,150px) 0 clamp(48px,6vw,88px)}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(24px,4vw,56px);align-items:center}
.greet{display:inline-block;margin-bottom:20px;padding:9px 18px;border-radius:20px 20px 20px 6px;background:var(--sky-c);color:var(--on-c);font-weight:700;font-size:16px}
.line{display:flex;align-items:center;gap:.2em}
.glyph{flex:none;width:.74em;height:.74em;animation:morph 7s var(--ease-io) infinite}
.hero-lede{margin-top:clamp(18px,2.4vw,28px);font:800 clamp(24px,2.6vw,36px)/1.15 var(--display);letter-spacing:-.02em;color:var(--pri)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:clamp(24px,3vw,36px)}

.stage{--mx:0;--my:0;position:relative;width:100%;max-width:580px;aspect-ratio:1;margin-inline:auto}
.stage-blob{position:absolute;inset:0;background:var(--azure-c);--shape:var(--shape-cookie);--alt:var(--shape-flower);animation:morph 12s var(--ease-io) infinite,spin 70s linear infinite}
.finder{position:absolute;left:8%;right:8%;top:50%;translate:0 -50%;padding:14px;border-radius:36px;background:var(--surface);border:1px solid var(--outline-var)}
.finder-bar{display:flex;align-items:center;gap:12px;height:58px;padding:0 20px;border-radius:29px;background:var(--sf-high)}
.finder-bar svg{flex:none;width:22px;height:22px}
.finder-text{display:flex;align-items:center;min-width:0;font:700 clamp(16px,1.6vw,19px)/1 var(--body);white-space:nowrap;overflow:hidden}
.caret{flex:none;width:2.5px;height:1.15em;margin-left:3px;border-radius:2px;background:var(--pri);animation:blink 1s steps(2,start) infinite}
@keyframes blink{to{visibility:hidden}}
.finder-rows{display:grid;gap:8px;margin-top:10px}
.finder-rows li{display:flex;align-items:center;gap:14px;height:64px;padding:0 14px;border-radius:22px;background:var(--sf-low);transition:border-radius .6s var(--spring),transform .6s var(--spring)}
.finder-rows li:hover{border-radius:32px;transform:translateX(6px)}
.finder-rows.swap li{animation:pop-row .7s var(--spring) both;animation-delay:calc(var(--i)*70ms)}
@keyframes pop-row{from{opacity:.2;transform:translateY(14px) scale(.96)}}
.ico{flex:none;display:grid;place-items:center;width:44px;height:44px}
.ico svg{width:22px;height:22px}
.finder-rows b{font:700 clamp(16px,1.5vw,18px)/1.2 var(--body)}
.float{position:absolute;display:grid;place-items:center;width:22%;aspect-ratio:1;translate:calc(var(--mx,0)*16px) calc(var(--my,0)*16px);transition:clip-path .8s var(--spring);animation:bob 5s ease-in-out infinite,morph 9s var(--ease-io) infinite}
.float svg{width:38%;height:38%}
.f-1{left:-1%;bottom:6%}
.f-2{right:-1%;top:4%;width:20%;animation-delay:-2s,-3s}

/* ---------- subject strip ---------- */
.strip{overflow:hidden;padding:18px 0;background:var(--sf-low);border-block:1px solid var(--outline-var)}
.strip-track{display:flex;width:max-content;animation:marquee 46s linear infinite}
.strip ul{display:flex;gap:12px;padding-right:12px}
.strip li{display:flex;align-items:center;gap:10px;height:48px;padding:0 22px 0 16px;border-radius:24px;background:var(--surface);border:1px solid var(--outline-var);font-weight:700;font-size:17px;white-space:nowrap}
.dot{width:18px;height:18px;clip-path:var(--shape-cookie)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.block{padding:clamp(72px,10vw,136px) 0}
.block-tight{padding-top:0}
.trio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(12px,1.6vw,20px);margin-top:clamp(36px,5vw,64px);align-items:start}
.tile{position:relative;display:flex;flex-direction:column;min-height:clamp(320px,34vw,420px);padding:clamp(24px,2.6vw,36px);border-radius:44px 44px 44px 14px;color:var(--on-c);transition:border-radius .8s var(--spring),transform .8s var(--spring)}
.t-azure{background:var(--azure-c)}.t-sky{background:var(--sky-c)}.t-aqua{background:var(--aqua-c)}
.tile:nth-child(2){margin-top:clamp(0px,4vw,56px)}
.tile-art{display:grid;place-items:center;width:clamp(84px,8vw,108px);aspect-ratio:1}
.tile-art svg{width:42%;height:42%}
.tile h3{margin-top:auto;font-size:clamp(30px,3vw,40px);font-weight:800;line-height:1.05}
.tile p{margin-top:10px;max-width:22ch;font-size:19px;font-weight:600;line-height:1.35}
.tile-go{position:absolute;right:clamp(20px,2.4vw,32px);top:clamp(24px,2.6vw,36px);display:grid;place-items:center;width:60px;height:60px;border-radius:30px;background:var(--on-c);color:#fff;transition:border-radius .7s var(--spring),transform .7s var(--spring)}
.tile-go .arrow{width:26px;height:26px}
@media (hover:hover){
  .tile:hover{border-radius:44px;transform:translateY(-6px)}
  .tile:hover .tile-art{--shape:var(--shape-burst)}
  .tile:hover .tile-go{border-radius:18px;transform:rotate(-45deg) scale(1.08)}
}
.tile:active{transform:scale(.98)}

/* ---------- levels: radios drive the tabs, so it works without JavaScript ---------- */
.levels{margin-top:clamp(28px,4vw,48px)}
.lv-grid{display:grid;grid-template-columns:minmax(220px,320px) minmax(0,1fr);gap:clamp(12px,1.6vw,20px);align-items:stretch}
.lv-pick{display:flex;flex-direction:column;gap:8px}
.lv-btn{display:flex;align-items:center;min-height:64px;padding:0 26px;border-radius:20px;background:var(--sf-high);color:var(--on);font-weight:800;font-size:22px;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:border-radius .7s var(--spring),background-color .25s,color .25s,transform .5s var(--spring)}
.lv-btn:hover{border-radius:30px}
.lv-btn:active{transform:scale(.96)}
.lv-panels{position:relative}
.lv-panel{display:none;position:relative;overflow:hidden;height:100%;padding:clamp(24px,4vw,52px);border-radius:52px 52px 52px 16px;background:var(--c);color:var(--on-c)}
.lv-panel>*{position:relative}
.lv-art{position:absolute!important;right:-70px;top:-70px;width:280px;height:280px;background:var(--surface);opacity:.6;animation:morph 9s var(--ease-io) infinite,spin 50s linear infinite}
.lv-sub{max-width:16em;font-weight:800;font-size:clamp(26px,3vw,40px);line-height:1.08}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:clamp(24px,3vw,40px) 0 clamp(28px,3.4vw,44px)}
.chip{display:inline-flex;align-items:center;height:52px;padding:0 22px;border-radius:18px;background:var(--surface);font-weight:700;font-size:17px;transition:border-radius .6s var(--spring),transform .5s var(--spring),background-color .2s}
.chip:hover{border-radius:26px;transform:translateY(-3px);background:#fff}
.chip:active{transform:scale(.94)}
.lv-panel .m3-btn{--bg:var(--on-c);--fg:#fff}
@keyframes panel-in{from{opacity:0;transform:translateY(24px) scale(.97)}}
@keyframes chip-in{from{opacity:0;transform:translateY(16px) scale(.85)}}
/* Level tabs: one block per level, up to eight (landing.html renders one radio + label + panel each). */
#lv-0:checked ~ .lv-grid .lv-panel-0{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-0:checked ~ .lv-grid .lv-panel-0 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-0:checked ~ .lv-grid .lv-btn-0{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-0:focus-visible ~ .lv-grid .lv-btn-0{outline:3px solid var(--on);outline-offset:3px}
#lv-1:checked ~ .lv-grid .lv-panel-1{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-1:checked ~ .lv-grid .lv-panel-1 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-1:checked ~ .lv-grid .lv-btn-1{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-1:focus-visible ~ .lv-grid .lv-btn-1{outline:3px solid var(--on);outline-offset:3px}
#lv-2:checked ~ .lv-grid .lv-panel-2{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-2:checked ~ .lv-grid .lv-panel-2 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-2:checked ~ .lv-grid .lv-btn-2{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-2:focus-visible ~ .lv-grid .lv-btn-2{outline:3px solid var(--on);outline-offset:3px}
#lv-3:checked ~ .lv-grid .lv-panel-3{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-3:checked ~ .lv-grid .lv-panel-3 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-3:checked ~ .lv-grid .lv-btn-3{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-3:focus-visible ~ .lv-grid .lv-btn-3{outline:3px solid var(--on);outline-offset:3px}
#lv-4:checked ~ .lv-grid .lv-panel-4{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-4:checked ~ .lv-grid .lv-panel-4 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-4:checked ~ .lv-grid .lv-btn-4{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-4:focus-visible ~ .lv-grid .lv-btn-4{outline:3px solid var(--on);outline-offset:3px}
#lv-5:checked ~ .lv-grid .lv-panel-5{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-5:checked ~ .lv-grid .lv-panel-5 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-5:checked ~ .lv-grid .lv-btn-5{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-5:focus-visible ~ .lv-grid .lv-btn-5{outline:3px solid var(--on);outline-offset:3px}
#lv-6:checked ~ .lv-grid .lv-panel-6{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-6:checked ~ .lv-grid .lv-panel-6 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-6:checked ~ .lv-grid .lv-btn-6{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-6:focus-visible ~ .lv-grid .lv-btn-6{outline:3px solid var(--on);outline-offset:3px}
#lv-7:checked ~ .lv-grid .lv-panel-7{display:block;animation:panel-in .8s var(--spring-soft)}
#lv-7:checked ~ .lv-grid .lv-panel-7 .chips li{animation:chip-in .7s var(--spring) both;animation-delay:calc(var(--i)*50ms + 120ms)}
#lv-7:checked ~ .lv-grid .lv-btn-7{background:var(--pri);color:var(--on-pri);border-radius:32px}
#lv-7:focus-visible ~ .lv-grid .lv-btn-7{outline:3px solid var(--on);outline-offset:3px}

/* ---------- study books ---------- */
.books{margin:0 var(--gap);padding:clamp(52px,8vw,112px) 0;border-radius:clamp(36px,5vw,64px);background:var(--sky-c);color:var(--on-c);overflow:hidden}
.books-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(36px,5vw,72px);align-items:center}
.ticks{display:grid;gap:14px;margin:clamp(24px,3vw,36px) 0 clamp(28px,3.4vw,44px)}
.ticks li{display:flex;align-items:center;gap:14px;font-weight:700;font-size:clamp(18px,1.7vw,22px)}
.check{flex:none;width:34px;height:34px;padding:7px;border-radius:50%;background:var(--ink);color:var(--sky-c);stroke-width:2.6}
.shelf{display:flex;align-items:flex-end;justify-content:center;gap:clamp(8px,1.4vw,18px);height:clamp(300px,36vw,440px)}
.book{--r:-7deg;position:relative;flex:1 1 0;max-width:150px;display:flex;flex-direction:column;padding:clamp(12px,1.6vw,20px);border-radius:clamp(26px,3vw,40px) clamp(26px,3vw,40px) 18px 18px;transition:transform .9s var(--spring),border-radius .8s var(--spring);transform-origin:bottom center}
.book small{font-weight:700;font-size:clamp(13px,1.3vw,16px);opacity:.85}
.book b{font:800 clamp(40px,5.4vw,72px)/.95 var(--display);letter-spacing:-.05em}
.book-shape{display:block;width:62%;aspect-ratio:1;margin-top:auto;background:currentColor;opacity:.25}
.bk-0{height:70%;background:var(--azure-d);color:#fff}
.bk-1{height:86%;background:var(--aqua-d);color:#fff;--r:5deg}
.bk-2{height:78%;background:var(--peri-d);color:#fff}
.bk-3{height:100%;background:var(--ink);color:var(--sky);--r:6deg}
@media (hover:hover){
  .book:hover{transform:translateY(-14px) rotate(-2deg);border-radius:clamp(26px,3vw,40px)}
  .book:hover .book-shape{--shape:var(--shape-burst)}
}

/* ---------- community ---------- */
.forum-in{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(32px,5vw,72px);align-items:start}
.forum-copy{position:sticky;top:112px;display:grid;gap:clamp(24px,3vw,36px);justify-items:start}
.threads{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(10px,1.4vw,16px)}
.thread{display:flex;flex-direction:column;gap:12px;padding:clamp(20px,2.2vw,28px);border-radius:36px 36px 36px 12px;color:var(--on-c);transition:border-radius .8s var(--spring),transform .8s var(--spring)}
.thread:nth-child(even){border-radius:36px 36px 12px 36px}
.th-azure{background:var(--azure-c)}.th-sky{background:var(--sky-c)}.th-aqua{background:var(--aqua-c)}.th-peri{background:var(--peri-c)}
.thread-head{display:flex;align-items:center;gap:12px}
.ava{flex:none;width:46px;height:46px;object-fit:cover;background:var(--surface)}
.ava-i{display:grid;place-items:center;background:var(--on-c);color:#fff;font:800 20px/1 var(--display)}
.thread-who{display:grid;min-width:0;line-height:1.25}
.thread-who b{font-weight:800;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.thread-who small{font-size:14px;font-weight:600;opacity:.75}
.tag{margin-left:auto;flex:none;padding:6px 12px;border-radius:12px;background:rgba(255,255,255,.7);font-weight:700;font-size:13px}
.thread-title{font-weight:700;font-size:clamp(19px,1.8vw,23px);line-height:1.2;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.thread-text{font-size:15.5px;line-height:1.5;font-weight:500;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.thread-foot{display:flex;gap:18px;margin-top:auto;padding-top:6px;font-weight:700;font-size:15px}
.thread-foot span{display:flex;align-items:center;gap:6px}
.thread-foot svg{width:18px;height:18px}
@media (hover:hover){.thread:hover{border-radius:36px;transform:translateY(-5px)}}
.thread:active{transform:scale(.98)}

/* ---------- app ---------- */
.app{margin:0 var(--gap);padding:clamp(52px,8vw,112px) 0;border-radius:clamp(36px,5vw,64px);background:var(--ink);color:var(--on-ink);overflow:hidden}
.app :focus-visible{outline-color:var(--on-ink)}
.app-in{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:clamp(36px,5vw,72px);align-items:center}
.app-copy{display:grid;gap:clamp(20px,2.4vw,28px);justify-items:start}
.app-line{font-weight:600;font-size:clamp(20px,2vw,26px);line-height:1.3}
.app-line b{color:var(--sky)}
.phone-wrap{position:relative;display:grid;place-items:center;min-height:clamp(440px,52vw,620px)}
.phone-blob{position:absolute;width:min(100%,520px);aspect-ratio:1;background:var(--azure);animation:morph 11s var(--ease-io) infinite,spin 80s linear infinite}
.phone{position:relative;width:min(290px,64%);aspect-ratio:9/18.4;padding:9px;border-radius:46px;background:#04163f}
.screen{position:relative;height:100%;overflow:hidden;padding:22px 18px;border-radius:38px;background:var(--surface);color:var(--on)}
.scr-top{display:flex;justify-content:space-between;align-items:baseline;font-size:13px;font-weight:600;color:var(--on-var)}
.scr-top b{font:800 17px/1 var(--display);color:var(--on)}
.scr-bar{height:6px;margin:12px 0 20px;border-radius:3px;background:var(--sf-high)}
.scr-bar i{display:block;width:31%;height:100%;border-radius:3px;background:var(--pri)}
.scr-page h4{margin-bottom:14px;font:800 21px/1.1 var(--display);letter-spacing:-.03em}
.scr-page>i{display:block;position:relative;height:9px;margin-bottom:10px;border-radius:5px;background:var(--sf-highest)}
.scr-page .s{width:58%}
.scr-page .hl::after{content:"";position:absolute;inset:-4px -5px;border-radius:7px;background:var(--sky);opacity:.6;transform-origin:left;animation:scr-hl 10s var(--spring-soft) infinite}
.fig{display:grid;place-items:center;height:92px;margin:16px 0;border-radius:22px;background:var(--aqua-c)}
.fig i{width:52px;height:52px;background:var(--aqua-d)}
.scr-fab{position:absolute;right:16px;bottom:18px;display:flex;align-items:center;gap:8px;height:50px;padding:0 18px 0 14px;border-radius:18px;background:var(--sky);color:var(--on-c);font-weight:800;font-size:14.5px;opacity:0;animation:scr-fab 10s var(--spring) infinite}
.scr-fab svg{width:20px;height:20px;fill:currentColor;stroke:none}
.scr-sheet{position:absolute;left:0;right:0;bottom:0;display:grid;gap:12px;justify-items:end;padding:22px 16px 26px;border-radius:30px 30px 0 0;background:var(--peri-c);color:var(--on-c);animation:scr-sheet 10s var(--spring-soft) infinite}
.scr-sheet .q{padding:11px 15px;border-radius:20px 20px 6px 20px;background:var(--ink);color:var(--on-ink);font-weight:700;font-size:13.5px;line-height:1.3;animation:scr-q 10s var(--spring) infinite}
.scr-sheet .a{display:grid;gap:8px;justify-self:stretch;padding:16px;border-radius:20px 20px 20px 6px;background:var(--surface)}
.scr-sheet .a i{display:block;height:8px;border-radius:4px;background:var(--sf-highest);transform-origin:left}
.scr-sheet .a i:nth-child(1){animation:scr-l1 10s var(--spring-soft) infinite}
.scr-sheet .a i:nth-child(2){animation:scr-l2 10s var(--spring-soft) infinite}
.scr-sheet .a i:nth-child(3){width:55%;animation:scr-l3 10s var(--spring-soft) infinite}
@keyframes scr-hl{0%,6%{transform:scaleX(0)}16%,90%{transform:scaleX(1)}97%,100%{transform:scaleX(0)}}
@keyframes scr-fab{0%,12%{opacity:1;transform:scale(0)}20%,28%{opacity:1;transform:scale(1)}32%{opacity:1;transform:scale(.86)}36%,97%{opacity:0;transform:scale(.6)}100%{opacity:1;transform:scale(0)}}
@keyframes scr-sheet{0%,33%{transform:translateY(105%)}42%,90%{transform:translateY(0)}97%,100%{transform:translateY(105%)}}
@keyframes scr-q{0%,44%{opacity:0;transform:translateY(14px) scale(.9)}50%,90%{opacity:1;transform:none}97%,100%{opacity:0}}
@keyframes scr-l1{0%,54%{transform:scaleX(0)}60%,92%{transform:scaleX(1)}98%,100%{transform:scaleX(0)}}
@keyframes scr-l2{0%,60%{transform:scaleX(0)}66%,92%{transform:scaleX(1)}98%,100%{transform:scaleX(0)}}
@keyframes scr-l3{0%,66%{transform:scaleX(0)}72%,92%{transform:scaleX(1)}98%,100%{transform:scaleX(0)}}

/* ---------- faq ---------- */
.faq-in{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(32px,5vw,72px);align-items:start}
.faq-in .h2{position:sticky;top:112px}
.faq-list{display:grid;gap:10px}
.faq-list details{border-radius:30px;background:var(--sf-low);border:1px solid var(--outline-var);transition:border-radius .7s var(--spring),background-color .3s}
.faq-list details[open]{border-radius:40px 40px 40px 14px;background:var(--azure-c);border-color:transparent}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px;padding:12px 16px 12px 28px;cursor:pointer;list-style:none;font-weight:800;font-size:clamp(18px,1.7vw,21px);line-height:1.3;-webkit-tap-highlight-color:transparent}
.faq-list summary::-webkit-details-marker{display:none}
.plus{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:24px;background:var(--sf-highest);transition:transform .7s var(--spring),border-radius .7s var(--spring),background-color .3s}
.plus svg{width:22px;height:22px}
.faq-list details[open] .plus{transform:rotate(135deg);border-radius:14px;background:var(--surface)}
.faq-list summary:hover .plus{border-radius:16px}
.faq-list details p{padding:0 28px 26px;max-width:60ch;font-size:17.5px;line-height:1.6;animation:fade-up .6s var(--spring-soft)}

/* ---------- footer ---------- */
.foot{padding-bottom:clamp(20px,3vw,32px)}
.foot-cta{position:relative;margin:0 var(--gap);padding:clamp(60px,9vw,128px) 0;border-radius:clamp(36px,5vw,64px);background:var(--pri);color:var(--on-pri);overflow:hidden}
.foot-cta :focus-visible{outline-color:#fff}
.foot-cta-in{position:relative;z-index:1;display:grid;gap:clamp(24px,3vw,40px);justify-items:start}
.foot-cta .h2{max-width:11em;font-size:clamp(40px,7vw,104px)}
.orb{position:absolute;animation:morph 10s var(--ease-io) infinite,spin 60s linear infinite}
.orb-1{right:-6%;top:-18%;width:clamp(200px,34vw,460px);aspect-ratio:1;background:var(--azure)}
.orb-2{right:22%;bottom:-24%;width:clamp(120px,19vw,260px);aspect-ratio:1;background:var(--sky);animation-direction:normal,reverse}
.orb-3{right:4%;bottom:6%;width:clamp(70px,11vw,150px);aspect-ratio:1;background:var(--peri)}
.foot-in{padding-top:clamp(40px,6vw,72px)}
.foot-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.foot-cols div{display:grid;gap:4px;align-content:start}
.foot-cols small{margin-bottom:8px;font-weight:800;font-size:14px;letter-spacing:.06em;text-transform:uppercase;color:var(--on-var)}
.foot-cols a{justify-self:start;padding:4px 0;font-weight:700;font-size:18px;transition:color .2s,transform .5s var(--spring)}
.foot-cols a:hover{color:var(--pri);transform:translateX(6px)}
.foot-word{display:flex;justify-content:center;margin-top:clamp(28px,5vw,64px);overflow:hidden;font-weight:800;font-size:clamp(72px,22vw,310px);line-height:.86;letter-spacing:-.04em;color:var(--sf-high);user-select:none}
.foot-word span{display:inline-block}
.foot-base{margin-top:12px;font-weight:600;font-size:15px;color:var(--on-var)}

/* ---------- entrance + scroll motion ---------- */
.js:not(.ready) .intro{opacity:0}
.ready .intro{animation:rise 1s var(--spring-soft) both;animation-delay:calc(var(--i,0)*90ms)}
.ready .glyph{animation:pop 1s var(--spring) calc(var(--i,0)*90ms + 300ms) both,morph 7s var(--ease-io) 1.6s infinite}
.js .shelf[data-reveal],.js .shelf[data-reveal].in{opacity:1;transform:none}
.js .shelf .book{opacity:0;transform:translateY(90px) rotate(var(--r))}
.js .shelf.in .book{opacity:1;transform:none;transition:opacity .4s ease,transform 1.1s var(--spring),border-radius .8s var(--spring);transition-delay:calc(var(--i)*120ms + 150ms)}
.js .shelf.in .book:hover{transition-delay:0s}
.js .foot-word span{transform:translateY(105%)}
.js .foot-word.in span{transform:none;transition:transform 1.1s var(--spring);transition-delay:calc(var(--i)*70ms)}
/* looping motion only runs while its section is on screen */
.js [data-live]:not(.is-live) *,.js [data-live]:not(.is-live) *::before,.js [data-live]:not(.is-live) *::after{animation-play-state:paused!important}
.js [data-live]:not(.is-live)>*{animation-play-state:paused!important}

/* ---------- responsive ---------- */
@media (max-width:1060px){
  .nav-links a{padding:0 13px}
}
@media (max-width:920px){
  .nav .m3-pill,.nav-signin{display:none}
  .burger{display:block}
  .hero-in,.books-in,.app-in,.forum-in,.faq-in{grid-template-columns:minmax(0,1fr)}
  .forum-copy,.faq-in .h2{position:static}
  .trio{grid-template-columns:minmax(0,1fr)}
  .tile{min-height:260px}
  .tile:nth-child(2){margin-top:0}
  .tile p{max-width:none}
  .lv-grid{grid-template-columns:minmax(0,1fr)}
  .lv-pick{flex-direction:row;flex-wrap:wrap}
  .lv-btn{min-height:52px;padding:0 20px;font-size:18px}
  .stage{max-width:500px}
  .books-in .shelf{order:-1}
}
@media (max-width:620px){
  .threads{grid-template-columns:minmax(0,1fr)}
  .foot-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-cta .m3-btn{flex:1 1 auto}
  .brand-name{font-size:22px}
  .lv-art{width:200px;height:200px;right:-60px;top:-60px}
  .tile-go{width:52px;height:52px}
  .display{font-size:12.4vw}
  .stage{aspect-ratio:1/1.1}
  .float{width:22%}
  .f-1{left:auto;right:2%;bottom:-2%}
  .f-2{right:0;top:2%}
  .finder{left:5%;right:5%}
  .finder-rows li{height:58px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;transition-delay:0s!important}
  .js [data-reveal],.js .shelf .book,.js .foot-word span{opacity:1;transform:none}
  .js:not(.ready) .intro{opacity:1}
}



/* ---------- real Google Play badge ---------- */
.play-badge{display:inline-block;line-height:0;border-radius:10px;transition:transform .45s var(--spring),border-radius .45s var(--spring)}
.play-badge img{display:block;height:60px;width:auto}
@media (hover:hover){.play-badge:hover{transform:translateY(-3px) scale(1.03)}}
.play-badge:active{transform:scale(.96)}
.app :focus-visible.play-badge{outline-offset:4px}

/* ---------- dark theme: pairs that were written against the light roles ---------- */
[data-theme="dark"] .chip:hover{background:var(--sf-highest)}
[data-theme="dark"] .lv-panel .m3-btn{--bg:var(--pri);--fg:var(--on-pri)}
[data-theme="dark"] .ava-i{background:var(--pri-c);color:var(--on-pri-c)}
[data-theme="dark"] .bk-0,[data-theme="dark"] .bk-1,[data-theme="dark"] .bk-2{color:#06235f}
[data-theme="dark"] .foot-cta :focus-visible{outline-color:var(--on-pri)}
[data-theme="dark"] .brand-name{color:var(--on)}
@media (max-width:920px){.theme-btn{--tb:48px}}
@media (max-width:560px){.nav-end>.m3-btn{display:none}.nav{padding:0 10px 0 8px}}
.menu a.menu-cta{color:var(--pri)}
[data-theme="dark"] .foot-cta{background:var(--md-primary-container);color:var(--md-on-primary-container)}
[data-theme="dark"] .foot-cta .m3-btn-light{--bg:var(--md-primary);--fg:var(--md-on-primary)}