/* AnimReview site. Direction: dark brutalism + animator's instruments (timecode, spacing chart, hard grid). No hover transforms on clickable items (avoids hit-area jitter). */
:root{--ink:#0a0a0c;--ink2:#111115;--ink3:#18181d;--paper:#f2efe8;--line:#2b2b33;--mute:#a1a1ad;--fire:#ff5b1f;--lime:#c8ff3d;--warn:#ffd23d;--r:2px;
--disp:'Anton','Noto Sans SC','PingFang SC','Microsoft YaHei',Impact,sans-serif;--body:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;--mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;--pad:clamp(16px,4vw,56px);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}body{margin:0;background:var(--ink);color:var(--paper);font:400 17px/1.6 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:'';position:fixed;inset:0;pointer-events:none;opacity:.07;z-index:100;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>")}
a{color:inherit}.mono{font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.dim{color:var(--mute)}
.display{font-family:var(--disp);font-weight:400;font-synthesis:none;text-transform:uppercase;line-height:.88;letter-spacing:.005em}
html[lang=zh] .display{font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;font-weight:900;line-height:1;letter-spacing:-.02em}
.outline{color:transparent;-webkit-text-stroke:2px var(--fire)}.outline b{display:block;font-weight:inherit}html[lang=zh] .outline b{-webkit-text-stroke:0;color:#ff5b1f;filter:url(#hollow-fire)}/* hollow CJK flood colors in index.html must stay in sync with --fire and --paper */
mark.ph{background:var(--warn);color:#000;padding:0 .3em;font:600 .82em var(--mono);border-radius:2px;white-space:normal}
.skip{position:absolute;left:-999px;top:8px;background:var(--fire);color:var(--ink);padding:8px 12px;z-index:200}.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:20px;padding:12px var(--pad);background:color-mix(in srgb,var(--ink) 82%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.logo{font:400 24px/1 var(--disp);text-decoration:none;letter-spacing:.02em}.logo i{color:var(--fire);font-style:normal;margin:0 2px}.logo .o{color:transparent;-webkit-text-stroke:1px var(--paper)}
.links{display:flex;gap:22px;list-style:none;margin:0 auto 0 28px;padding:0}.links a{font:500 13px var(--mono);letter-spacing:.06em;text-transform:uppercase;text-decoration:none;color:var(--mute);padding:6px 0;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}.links a:hover{color:var(--paper);border-color:var(--fire)}
.lang{display:flex;border:1px solid var(--line)}.lang button{background:none;border:0;color:var(--mute);font:500 12px var(--mono);padding:7px 12px;cursor:pointer;transition:background .2s,color .2s}.lang button[aria-pressed=true]{background:var(--paper);color:var(--ink)}
.menu{display:none;background:transparent;color:var(--paper);border:1px solid var(--line);font:500 12px var(--mono);letter-spacing:.06em;text-transform:uppercase;padding:7px 12px;cursor:pointer}.menu:hover{border-color:var(--fire);color:var(--fire)}
.btn{display:inline-block;background:var(--fire);color:var(--ink);font:600 14px var(--mono);letter-spacing:.06em;text-transform:uppercase;text-decoration:none;padding:15px 26px;border:2px solid var(--fire);border-radius:var(--r);cursor:pointer;box-shadow:5px 5px 0 var(--paper);transition:box-shadow .15s,background .15s,color .15s}
.btn:hover{box-shadow:8px 8px 0 var(--paper)}.btn:active{box-shadow:2px 2px 0 var(--paper)}.btn.sm{padding:9px 16px;font-size:12px;box-shadow:3px 3px 0 var(--paper)}.btn.ghost{background:transparent;color:var(--paper);border-color:var(--paper);box-shadow:5px 5px 0 var(--fire)}
@media(max-width:900px){.links{display:none}.nav{flex-wrap:wrap;gap:12px}.menu{display:inline-block;margin-left:auto}.nav .lang{margin-left:0}.nav.open .links{display:flex;flex-direction:column;order:2;flex:1 0 100%;gap:0;margin:4px 0 0}.nav.open .links a{padding:10px 0}}
@media(max-width:520px){.nav>.btn{display:none}}
/* hero */
section{position:relative}.wrap{max-width:1280px;margin:0 auto;padding:0 var(--pad)}
.hero{padding:clamp(40px,8vw,110px) 0 56px;overflow:hidden}.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:80px 80px;opacity:.5;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 80%);mask-image:radial-gradient(ellipse 80% 70% at 50% 30%,#000 30%,transparent 80%)}
.hero::after{content:'';position:absolute;width:60vw;height:60vw;max-width:800px;max-height:800px;right:-15vw;top:-20vw;background:radial-gradient(circle,rgba(255,91,31,.28),transparent 65%);filter:blur(20px);pointer-events:none}
.hero .wrap{position:relative;z-index:1}.kicker{color:var(--fire);margin:0 0 18px;display:flex;gap:12px;align-items:center}.kicker::before{content:'';width:40px;height:2px;background:var(--fire)}
h1.display{font-size:clamp(2.4rem,12vw,13.5rem);margin:0}h1 span{display:block}html[lang=zh] h1.display{font-size:clamp(2.2rem,11vw,12rem)}
.lede{max-width:640px;font-size:clamp(17px,2vw,21px);color:#d8d5cd;margin:28px 0}.cta{display:flex;gap:22px;flex-wrap:wrap;align-items:center;margin:8px 0 14px}.note{color:var(--mute);font-size:14px;margin:0}
.ease{position:relative;height:28px;margin-top:44px;border-top:1px dashed var(--line);border-bottom:1px dashed var(--line)}.ease i{position:absolute;top:50%;width:8px;height:8px;margin:-4px 0 0 -4px;border-radius:50%;background:var(--mute);opacity:.7}
.ease b{position:absolute;top:50%;left:0;width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;background:var(--fire);box-shadow:0 0 18px var(--fire);animation:run 2.6s cubic-bezier(.65,0,.35,1) infinite alternate}.ease+.cap{margin:8px 0 0;color:var(--mute)}
@keyframes run{to{left:100%}}
/* stage: the reviewer is the main character */
.stage{padding:20px 0 90px}.stage .head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:14px}.stage h2{font-size:clamp(2rem,5vw,3.6rem);margin:0}
.frame{position:relative;border:1px solid var(--line);background:var(--ink2);padding:14px 14px 18px;overflow:hidden;transition:border-color .4s,box-shadow .4s}
.frame::before,.frame::after{content:'';position:absolute;width:26px;height:26px;border:3px solid var(--fire);pointer-events:none}.frame::before{left:-1px;top:-1px;border-right:0;border-bottom:0}.frame::after{right:-1px;bottom:-1px;border-left:0;border-top:0}
.tcbar{display:flex;gap:14px;align-items:center;padding:2px 4px 12px;color:var(--mute)}.tcbar .dot{width:10px;height:10px;border-radius:50%;background:var(--mute)}.tcbar .tc{margin-left:auto;color:var(--paper);font-variant-numeric:tabular-nums}
.scan{position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--fire),transparent);opacity:0;pointer-events:none;z-index:2}
[data-phase=running] .frame{border-color:var(--fire);box-shadow:0 0 0 1px var(--fire),0 0 60px -10px rgba(255,91,31,.5)}[data-phase=running] .dot{background:#ff3b3b;animation:blink 1s steps(2) infinite}[data-phase=running] .scan{opacity:1;animation:scan 2.2s linear infinite}
[data-phase=done] .frame{border-color:var(--lime);box-shadow:0 0 50px -14px rgba(200,255,61,.45)}[data-phase=done] .dot{background:var(--lime)}[data-phase=error] .dot{background:#ff3b3b}[data-phase=error] .frame{border-color:#ff3b3b}
@keyframes blink{50%{opacity:.15}}@keyframes scan{from{top:0}to{top:100%}}
anim-review{--ar-accent:#ff5b1f;--ar-radius:3px;--ar-font:var(--body)}
/* ticker */
.ticker{border-block:1px solid var(--line);background:var(--ink2);overflow:hidden;padding:14px 0}.tk{display:flex;gap:48px;width:max-content;animation:tk 38s linear infinite}.ticker:hover .tk{animation-play-state:paused}.tk span{font:400 clamp(20px,3vw,34px) var(--disp);white-space:nowrap;text-transform:uppercase}html[lang=zh] .tk span{font:900 clamp(18px,2.6vw,30px) 'Noto Sans SC',sans-serif}.tk span::after{content:'✦';color:var(--fire);margin-left:48px}.tk span:nth-child(even){color:transparent;-webkit-text-stroke:1px var(--paper)}.tk span b{display:inline-block;font-weight:inherit}html[lang=zh] .tk span:nth-child(even) b{-webkit-text-stroke:0;color:#f2efe8;filter:url(#hollow-paper)}
@keyframes tk{to{transform:translateX(-50%)}}
/* generic sections */
.sec{padding:clamp(64px,10vw,130px) 0}.sec>.wrap>h2{font-size:clamp(2.6rem,8vw,7rem);margin:0 0 40px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.step{padding:28px 28px 36px 0;border-right:1px solid var(--line)}.step:last-child{border:0}.step+.step{padding-left:28px}
.num{font:400 clamp(5rem,12vw,10rem)/.85 var(--disp);color:transparent;-webkit-text-stroke:2px var(--fire);margin-bottom:18px}.step h3{font:400 clamp(1.6rem,3vw,2.4rem)/1 var(--disp);margin:0 0 10px;text-transform:uppercase}html[lang=zh] .step h3,html[lang=zh] .cell h3{font-family:'Noto Sans SC',sans-serif;font-weight:900}.step p{margin:0;color:#cfccc4;max-width:34ch}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}.cell{padding:30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 -1px -1px 0;transition:background .25s}.cell:hover{background:var(--ink3)}.cell h3{font:400 1.7rem/1.05 var(--disp);margin:0 0 10px;text-transform:uppercase}.cell p{margin:0;color:#cfccc4}.cell .ix{color:var(--fire);margin-bottom:14px;display:block}
.know{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(24px,5vw,72px);align-items:center}.know .lede{margin:0 0 20px}.ladder{display:grid;gap:0}.rung{padding:18px 22px;border:1px solid var(--line);font:400 clamp(1.4rem,3vw,2.2rem)/1 var(--disp);text-transform:uppercase;margin-left:calc(var(--i)*clamp(14px,4vw,48px))}html[lang=zh] .rung{font:900 clamp(1.2rem,2.6vw,1.9rem)/1.2 'Noto Sans SC',sans-serif}.rung:nth-child(1){--i:0}.rung:nth-child(2){--i:1}.rung:nth-child(3){--i:2;border-color:var(--paper)}.rung:nth-child(4){--i:3;background:var(--lime);color:var(--ink);border-color:var(--lime)}
.lock{margin-top:18px;border:1px dashed var(--warn);color:var(--warn);padding:12px 16px;display:flex;gap:10px;align-items:center}.lock::before{content:'🔒'}.loop{color:var(--mute);font-size:14px;margin-top:12px}
.asp{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.asp li{display:flex;align-items:baseline;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:6px 0;transition:background .25s,padding .25s}.asp li:hover{background:var(--ink3)}.asp b{font:400 clamp(3rem,11vw,9.5rem)/.95 var(--disp);color:transparent;-webkit-text-stroke:2px var(--paper);transition:color .25s,-webkit-text-stroke-color .25s;text-transform:uppercase}html[lang=zh] .asp b{font:900 clamp(2.6rem,10vw,8rem)/1.1 'Noto Sans SC',sans-serif;-webkit-text-stroke:0;color:#f2efe8;filter:url(#hollow-paper-lg)}.asp li:hover b{color:var(--fire);-webkit-text-stroke-color:var(--fire)}html[lang=zh] .asp li:hover b{filter:none;-webkit-text-stroke:0;color:var(--fire)}.asp span{color:var(--mute);text-align:right;max-width:22ch}
.faq{border-top:1px solid var(--line)}.faq details{border-bottom:1px solid var(--line)}.faq summary{cursor:pointer;list-style:none;padding:22px 0;font:600 clamp(1.1rem,2vw,1.4rem) var(--body);display:flex;justify-content:space-between;gap:16px}.faq summary::-webkit-details-marker{display:none}.faq summary::after{content:'+';font:400 2rem/1 var(--mono);color:var(--fire);transition:transform .25s}.faq details[open] summary::after{transform:rotate(45deg)}.faq p{margin:0 0 24px;color:#cfccc4;max-width:70ch}.faq a,.legal a{color:var(--lime)}
pre{background:var(--ink2);border:1px solid var(--line);padding:18px;overflow-x:auto;max-width:100%;font:13px/1.6 var(--mono);color:#d8d5cd}pre .k{color:var(--fire)}
.about>*,.know>*{min-width:0}
.about{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,72px)}
footer{border-top:1px solid var(--line);margin-top:20px;overflow:hidden}.foot{max-width:1280px;margin:0 auto;padding:40px var(--pad) 28px}.fbig{font-size:clamp(4rem,19vw,17rem);color:transparent;-webkit-text-stroke:1px var(--line);margin-bottom:24px;white-space:nowrap}
.fcols{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:28px}.fcols ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:14px}.fcols p{margin:0 0 8px}.fcols a{text-decoration:none;border-bottom:1px solid var(--line)}.fcols a:hover{border-color:var(--fire)}@media(max-width:820px){.fcols,.steps,.grid3,.know,.about{grid-template-columns:1fr}.step,.step+.step{padding:24px 0;border-right:0;border-bottom:1px solid var(--line)}.asp span{display:none}}
/* legal pages */
.legal{max-width:820px;margin:0 auto;padding:clamp(40px,8vw,90px) var(--pad) 80px}.legal h1{font-size:clamp(2.8rem,9vw,6rem);margin:0 0 24px}.legal h2{font:600 1.3rem var(--body);margin:36px 0 8px;color:var(--paper)}.legal p,.legal li{color:#d3d0c8}.legal .banner{background:var(--warn);color:#000;padding:10px 14px;font:600 13px var(--mono);margin:0 0 28px}.legal .scroll{overflow-x:auto}.legal .scroll table{width:100%;table-layout:fixed}.legal .scroll th,.legal .scroll td{overflow-wrap:anywhere}
html[lang=zh] [lang=en]:not(html),html[lang=en] [lang=zh]:not(html){display:none}
table{border-collapse:collapse;width:100%;font-size:14px}th,td{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}th{background:var(--ink2);font:600 12px var(--mono);text-transform:uppercase}
/* reveal-on-scroll (only when JS is on; reduced-motion shows everything immediately) */
.js .rv{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.8,.2,1) var(--d,0ms),transform .7s cubic-bezier(.2,.8,.2,1) var(--d,0ms)}.js .rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}.js .rv{opacity:1;transform:none}.ease b{left:50%}.tk{animation:tk 38s linear infinite!important;flex-wrap:nowrap;width:max-content}.ticker:hover .tk{animation-play-state:paused!important}}