/* SENTINEL AI — website.
   One visual world, set deliberately: black fields where the argument is made
   at large scale, light fields where the evidence is laid out, cobalt for the
   one thing to do next. Logical properties throughout, so Arabic mirrors
   without a second stylesheet. No inline styles anywhere: the pages ship
   under a CSP that forbids them. */

:root{
  --ink:#07080A; --ink-2:#0F1115; --ink-3:#171A20; --paper:#F2F3F5; --white:#FFFFFF;
  --on-ink:#F3F5F9; --on-ink-dim:#8E95A3; --on-ink-mid:#C3C8D2; --on-paper:#0A0B0E; --on-paper-dim:#5A606C;
  --cobalt:#2F5CFF; --cobalt-deep:#1638C9; --cobalt-soft:#6E8BFF; --coral:#FF5A3C; --coral-deep:#C2361C;
  --line-ink:rgba(243,245,249,.12); --line-paper:rgba(10,11,14,.10);
  --f-display:"Geologica","Golos Text",system-ui,sans-serif;
  --f-body:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --gutter:clamp(16px,4.5vw,64px);
  --track-tight:-.035em; --track:-.03em; --track-soft:-.02em;
  --lh-display:.94; --lh-h2:1; --lh-body:1.6;
  color-scheme:dark;
}
:root[lang="ar"]{
  --f-display:"IBM Plex Sans Arabic","Geologica",system-ui,sans-serif;
  --f-body:"IBM Plex Sans Arabic","Golos Text",system-ui,sans-serif;
  --track-tight:0; --track:0; --track-soft:0;
  --lh-display:1.22; --lh-h2:1.25; --lh-body:1.75;
}
:root[lang="zh"]{
  --f-display:"Geologica","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --f-body:"Golos Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --track-tight:0; --track:0; --track-soft:0;
  --lh-display:1.14; --lh-h2:1.2; --lh-body:1.8;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--ink);color:var(--on-ink);font:17px/var(--lh-body) var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:3px;border-radius:4px}
.skip{position:absolute;inset-inline-start:12px;top:-60px;z-index:100;padding:10px 16px;border-radius:10px;background:var(--cobalt);color:#fff;text-decoration:none;font-weight:600}
.skip:focus{top:12px}
.wrap{max-width:1280px;margin-inline:auto;padding-inline:var(--gutter)}
.kicker{font:500 12px/1.3 var(--f-mono);letter-spacing:.16em;text-transform:uppercase}
:root[lang="ar"] .kicker,:root[lang="zh"] .kicker{font:600 13.5px/1.4 var(--f-body);letter-spacing:.04em;text-transform:none}
h1,h2,h3,h4{font-family:var(--f-display);text-wrap:balance;margin:0;overflow-wrap:break-word}
p{text-wrap:pretty}
.ltr{direction:ltr;unicode-bidi:isolate}
.num{font-variant-numeric:tabular-nums}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:16px 26px;border-radius:999px;border:0;font:600 16px/1.1 var(--f-body);text-decoration:none;cursor:pointer;transition:transform .2s,background .2s,border-color .2s,color .2s}
.btn:hover{transform:translateY(-1px)}
.arr{display:inline-block;transition:transform .2s}
.btn:hover .arr,.more:hover .arr{transform:translateX(3px)}
[dir="rtl"] .arr{transform:scaleX(-1)}
[dir="rtl"] .btn:hover .arr,[dir="rtl"] .more:hover .arr{transform:scaleX(-1) translateX(3px)}
.btn-solid{background:var(--on-ink);color:var(--ink)}
.btn-line{background:transparent;border:1px solid var(--line-ink);color:var(--on-ink)}
.btn-line:hover{border-color:var(--on-ink)}
.btn-cobalt{background:var(--cobalt);color:#fff}
.btn-cobalt:hover{background:var(--cobalt-deep)}
.btn-ink{background:var(--on-paper);color:#fff}
.btn-ink:hover{background:#23262D}
.btn-ghost{background:transparent;border:1px solid var(--line-paper);color:var(--on-paper)}
.btn-ghost:hover{border-color:var(--on-paper)}
.btn[disabled]{opacity:.55;cursor:default;transform:none}
.more{display:inline-flex;align-items:center;gap:8px;margin-top:28px;font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}

/* ---------- header ---------- */
.top{position:fixed;inset-inline:0;top:0;z-index:40;padding-top:env(safe-area-inset-top,0px);transition:background .3s,border-color .3s;border-bottom:1px solid transparent}
.top.solid{background:rgba(7,8,10,.94);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line-ink)}
.top-in{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:700 17px/1 "Geologica",system-ui,sans-serif;letter-spacing:.06em;white-space:nowrap;direction:ltr}
.logo svg{width:28px;height:28px;flex:none}
.nav{display:flex;align-items:center;gap:4px;margin-inline-start:10px}
.nav > a,.nav .dd > button{display:inline-flex;align-items:center;gap:6px;padding:9px 11px;border-radius:10px;background:transparent;border:0;text-decoration:none;font:400 15px/1 var(--f-body);color:var(--on-ink-dim);cursor:pointer;transition:color .2s,background .2s;white-space:nowrap}
.nav > a:hover,.nav .dd > button:hover,.nav .dd > button[aria-expanded="true"]{color:var(--on-ink)}
.nav [aria-current="page"],.nav .dd.here > button{color:var(--on-ink)}
.nav .dd > button svg{width:10px;height:10px;transition:transform .2s}
.nav .dd > button[aria-expanded="true"] svg{transform:rotate(180deg)}
.dd{position:relative}
.dd-menu{position:absolute;inset-inline-start:0;top:calc(100% + 10px);min-width:300px;padding:8px;background:var(--ink-2);border:1px solid var(--line-ink);border-radius:16px;box-shadow:0 24px 60px -24px rgba(0,0,0,.8)}
.dd-menu a{display:block;padding:12px 14px;border-radius:10px;text-decoration:none}
.dd-menu a:hover,.dd-menu a[aria-current="page"]{background:rgba(243,245,249,.06)}
.dd-menu b{display:block;font:600 15.5px/1.3 var(--f-body);color:var(--on-ink)}
.dd-menu span{display:block;margin-top:3px;font-size:13.5px;line-height:1.4;color:var(--on-ink-dim)}
.top-end{display:flex;align-items:center;gap:10px;margin-inline-start:auto}
.lang{position:relative}
.lang > button{font:500 13px/1 var(--f-mono);letter-spacing:.08em;background:transparent;border:1px solid var(--line-ink);color:var(--on-ink);padding:10px 12px;border-radius:999px;cursor:pointer}
.lang-menu{position:absolute;inset-inline-end:0;top:calc(100% + 10px);width:220px;padding:8px;background:var(--ink-2);border:1px solid var(--line-ink);border-radius:14px;box-shadow:0 20px 50px -20px rgba(0,0,0,.7)}
.lang-menu a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;border-radius:9px;text-decoration:none;font-size:15px;color:var(--on-ink-dim)}
.lang-menu a span:last-child{font:500 12px var(--f-mono);letter-spacing:.06em}
.lang-menu a:hover{color:var(--on-ink)}
.lang-menu a[aria-current="true"]{color:var(--on-ink);background:rgba(243,245,249,.06)}
.top .btn{padding:11px 18px;font-size:14px}
.burger{display:none;background:transparent;border:1px solid var(--line-ink);color:var(--on-ink);border-radius:999px;padding:10px 15px;font:500 14px/1 var(--f-body);cursor:pointer}
.drawer{display:none}
[hidden]{display:none!important}
@media (max-width:1279px){
  .nav,.top-end > .btn{display:none}
  .burger{display:inline-flex}
  .drawer{position:fixed;inset:0;z-index:39;overflow-y:auto;background:var(--ink);padding:calc(96px + env(safe-area-inset-top,0px)) var(--gutter) calc(32px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column}
  .drawer a{text-decoration:none}
  .drawer > a,.drawer .grp > span{font:600 clamp(24px,6vw,30px)/1.3 var(--f-display);padding:10px 0;border-bottom:1px solid var(--line-ink)}
  .drawer .grp{display:flex;flex-direction:column;border-bottom:1px solid var(--line-ink);padding-bottom:10px}
  .drawer .grp > span{border-bottom:0;color:var(--on-ink-dim)}
  .drawer .grp a{padding:8px 0 8px 16px;font-size:18px;color:var(--on-ink-mid);border-inline-start:1px solid var(--line-ink)}
  .drawer [aria-current="page"]{color:var(--on-ink)}
  /* a button, not a menu row: its own padding and type, no rule under it */
  .drawer .btn{margin-top:28px;align-self:flex-start;padding:16px 26px;border-bottom:0;font:600 16px/1.1 var(--f-body)}
  /* iOS Safari can leave the page visible under its toolbar beneath a fixed layer */
  .menu-open main,.menu-open .foot{visibility:hidden}
}

/* ---------- hero (home) ---------- */
.hero{position:relative;min-height:min(900px,100svh);display:flex;flex-direction:column;overflow:hidden;isolation:isolate}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-2}
/* keeps the headline legible wherever the core's orbits pass behind it */
.hero::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(7,8,10,.94) 0%,rgba(7,8,10,.72) 32%,rgba(7,8,10,0) 60%)}
[dir="rtl"] .hero::before{background:linear-gradient(270deg,rgba(7,8,10,.94) 0%,rgba(7,8,10,.72) 32%,rgba(7,8,10,0) 60%)}
.hero-glow{position:absolute;inset:0;z-index:-3;background:radial-gradient(45% 55% at 72% 46%,rgba(47,92,255,.20),transparent 70%)}
[dir="rtl"] .hero-glow{background:radial-gradient(45% 55% at 28% 46%,rgba(47,92,255,.20),transparent 70%)}
.hero-in{flex:1;width:100%;display:flex;flex-direction:column;justify-content:center;padding-block:calc(120px + env(safe-area-inset-top,0px)) 40px}
.hero .kicker,.page-hero .kicker{color:var(--on-ink-dim);display:flex;align-items:center;gap:12px}
.hero .kicker::before,.page-hero .kicker::before{content:"";width:28px;height:1px;background:var(--on-ink-dim);flex:none}
.hero h1{margin-top:26px;max-width:11ch;font-weight:800;font-size:clamp(46px,7.4vw,112px);line-height:var(--lh-display);letter-spacing:var(--track-tight)}
:root[lang="zh"] .hero h1{max-width:9em}
/* Chinese headings break at punctuation and spaces, never inside a word */
:root[lang="zh"] h1,:root[lang="zh"] h2,:root[lang="zh"] h3{word-break:keep-all;overflow-wrap:anywhere}
:root[lang="ar"] .hero h1{font-size:clamp(42px,6.4vw,96px)}
.hero h1 span{display:block;color:var(--on-ink-dim)}
.hero-sub{margin:30px 0 0;max-width:44ch;font-size:clamp(17px,1.6vw,20px);line-height:1.55;color:var(--on-ink-mid)}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.hero-facts{border-top:1px solid var(--line-ink);background:linear-gradient(to top,rgba(7,8,10,.85),rgba(7,8,10,0))}
.hero-facts .wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.fact{padding:26px 24px 30px 0;min-width:0}
[dir="rtl"] .fact{padding:26px 0 30px 24px}
.fact + .fact{padding-inline-start:28px;border-inline-start:1px solid var(--line-ink)}
.fact b{display:block;font:700 clamp(30px,3.4vw,46px)/1 "Geologica",var(--f-display);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.fact span{display:block;margin-top:10px;font-size:14.5px;line-height:1.45;color:var(--on-ink-dim);max-width:30ch}
.fact sup{font-size:.45em;color:var(--on-ink-dim);margin-inline-start:2px;vertical-align:super}
@media (max-width:999px){
  .hero-in{padding-top:calc(min(46svh,400px) + env(safe-area-inset-top,0px))}
  /* the text keeps a dark ground of its own, starting exactly where it does */
  .hero::before,[dir="rtl"] .hero::before{background:none}
  .hero-in{background:linear-gradient(to bottom,rgba(7,8,10,0) calc(min(46svh,400px) - 90px),rgba(7,8,10,.88) calc(min(46svh,400px) - 6px),rgba(7,8,10,.88))}
  .hero-glow,[dir="rtl"] .hero-glow{background:radial-gradient(70% 40% at 50% 24%,rgba(47,92,255,.20),transparent 70%)}
}
@media (max-width:760px){
  .hero-facts .wrap{grid-template-columns:minmax(0,1fr)}
  .fact,.fact + .fact,[dir="rtl"] .fact{padding:18px 0;border-inline-start:0}
  .fact + .fact{border-top:1px solid var(--line-ink)}
}

/* ---------- inner page hero ---------- */
.page-hero{position:relative;overflow:hidden;isolation:isolate;padding-block:calc(150px + env(safe-area-inset-top,0px)) clamp(72px,9vw,128px)}
.page-hero h1{margin-top:24px;max-width:15ch;font-weight:800;font-size:clamp(33px,calc(6.2vw + 9px),96px);line-height:var(--lh-display);letter-spacing:var(--track-tight)}
:root[lang="zh"] .page-hero h1{max-width:12em}
.page-hero h1 span{color:var(--on-ink-dim)}
.page-hero .lead{color:var(--on-ink-mid);max-width:56ch}
.page-hero .hero-ctas{margin-top:34px}
.orbits{position:absolute;z-index:-1;inset-inline-end:-8vw;top:50%;width:min(62vw,760px);aspect-ratio:1;transform:translateY(-50%);pointer-events:none;opacity:.9}
.orbits svg{width:100%;height:100%;overflow:visible}
.orbits .o{fill:none;stroke:rgba(110,139,255,.38);stroke-width:1;vector-effect:non-scaling-stroke}
.orbits .o.faint{stroke:rgba(243,245,249,.10)}
.orbits .spin{transform-origin:50% 50%;animation:spin 60s linear infinite}
.orbits .spin.rev{animation-duration:90s;animation-direction:reverse}
.orbits .dot{fill:var(--coral)}
.orbits .halo{fill:rgba(255,90,60,.16)}
@keyframes spin{to{transform:rotate(360deg)}}
.page-hero::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(7,8,10,.96) 0%,rgba(7,8,10,.75) 40%,rgba(7,8,10,0) 70%)}
[dir="rtl"] .page-hero::after{background:linear-gradient(270deg,rgba(7,8,10,.96) 0%,rgba(7,8,10,.75) 40%,rgba(7,8,10,0) 70%)}
@media (max-width:860px){
  .orbits{width:120vw;inset-inline-end:-55vw;top:30%;opacity:.55}
}

/* ---------- sections ---------- */
.paper{background:var(--paper);color:var(--on-paper);color-scheme:light}
.white{background:var(--white);color:var(--on-paper);color-scheme:light}
.sec-dark{background:var(--ink);color:var(--on-ink)}
.sec-ink2{background:var(--ink-2);color:var(--on-ink)}
.sec{padding-block:clamp(80px,11vw,160px)}
.sec.tight{padding-block:clamp(64px,8vw,112px)}
.paper .kicker,.white .kicker{color:var(--on-paper-dim)}
.sec-dark .kicker,.sec-ink2 .kicker{color:var(--on-ink-dim)}
.h2{margin-top:22px;font-weight:700;font-size:clamp(34px,5.2vw,78px);line-height:var(--lh-h2);letter-spacing:var(--track);max-width:17ch}
:root[lang="zh"] .h2{max-width:14em}
.h2.md{font-size:clamp(32px,4vw,58px)}
.h2.wide{max-width:24ch}
.lead{margin:28px 0 0;max-width:60ch;font-size:clamp(17px,1.5vw,20px);line-height:1.6;color:var(--on-paper-dim)}
.sec-dark .lead,.sec-ink2 .lead{color:var(--on-ink-dim)}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:24px clamp(32px,6vw,96px);align-items:end}
.sec-head .lead{margin-top:0}
@media (max-width:900px){.sec-head{grid-template-columns:minmax(0,1fr)}}
.body-text{font-size:17px;line-height:var(--lh-body)}
.body-text p{margin:0 0 1em}

/* ---------- noise / 429 vs 9 ---------- */
.noise-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,260px);gap:clamp(28px,5vw,80px);margin-top:clamp(48px,6vw,80px);align-items:end}
.dots{display:flex;flex-wrap:wrap;gap:6px}
.dots i{width:11px;height:11px;border-radius:50%;background:#C9CDD5;flex:none}
.dots i.f{background:var(--coral)}
.dots i.c{background:var(--cobalt)}
.dots.play i.f{animation:lit .5s ease backwards}
@keyframes lit{from{background:#C9CDD5;transform:scale(.6)}}
.dots.mini{margin-bottom:14px}
.tallies{display:grid;gap:20px}
.tally{border-top:1.5px solid var(--on-paper);padding-top:16px}
.tally.cob{border-color:var(--cobalt)}
.tally b{display:block;font:800 clamp(64px,8vw,112px)/.9 "Geologica",var(--f-display);letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.tally.cob b{color:var(--cobalt)}
.tally .lab{display:block;margin-top:10px;font-size:15px;color:var(--on-paper-dim)}
.legend{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:22px;font-size:14.5px;color:var(--on-paper-dim)}
.legend span{display:inline-flex;align-items:center;gap:8px}
.legend i{width:11px;height:11px;border-radius:50%;flex:none;background:#C9CDD5}
.legend .f i{background:var(--coral)}
.source{margin-top:34px;display:flex;flex-wrap:wrap;align-items:baseline;gap:8px 20px;font-size:14px;color:var(--on-paper-dim)}
.source a{font-weight:600;color:var(--on-paper);text-decoration-thickness:1px;text-underline-offset:4px}
@media (max-width:860px){.noise-grid{grid-template-columns:minmax(0,1fr)}.dots i{width:8px;height:8px}.dots{gap:5px}}

/* ---------- four steps ---------- */
.steps{list-style:none;margin:clamp(56px,7vw,96px) 0 0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));position:relative}
.steps::before{content:"";position:absolute;inset-inline:0;top:28px;height:1px;background:var(--line-ink)}
.steps::after{content:"";position:absolute;top:24px;inset-inline-start:0;width:9px;height:9px;border-radius:50%;background:var(--cobalt);box-shadow:0 0 0 6px rgba(47,92,255,.18);animation:run 7s linear infinite}
@keyframes run{from{inset-inline-start:0}to{inset-inline-start:calc(100% - 9px)}}
.step{padding-inline-end:28px;min-width:0}
.step .n{display:inline-grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--ink);border:1px solid var(--line-ink);font:500 15px "JetBrains Mono",monospace;position:relative;z-index:1}
.step h3{margin-top:28px;font-size:clamp(24px,2.4vw,32px);font-weight:700;letter-spacing:var(--track-soft)}
.step p{margin:12px 0 0;color:var(--on-ink-dim);font-size:16px;line-height:1.6}
.steps.long .step p{font-size:16.5px}
@media (max-width:900px){
  .steps{grid-template-columns:minmax(0,1fr);gap:36px}
  .steps::before{inset-inline:auto;inset-inline-start:28px;top:0;bottom:0;width:1px;height:auto}
  .steps::after{display:none}
  .step{display:grid;grid-template-columns:56px minmax(0,1fr);gap:0 22px;padding:0}
  .step h3{margin-top:12px}
  .step p{grid-column:2}
}

/* ---------- the case card ---------- */
.why-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(36px,6vw,96px);align-items:start}
.why-grid .h2{font-size:clamp(34px,3.6vw,54px)}
.case{margin-top:6px;background:var(--white);color:var(--on-paper);border-radius:28px;padding:clamp(22px,3vw,40px);box-shadow:0 1px 0 var(--line-paper),0 40px 80px -50px rgba(10,11,14,.35)}
.paper .case,.sec-dark .case{box-shadow:0 40px 80px -50px rgba(10,11,14,.45)}
.case-hd{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;justify-content:space-between}
.case-hd h3{font-size:clamp(22px,2.2vw,28px);letter-spacing:var(--track-soft)}
.sev{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:999px;background:rgba(255,90,60,.1);color:var(--coral-deep);font:500 13px var(--f-body)}
.sev::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
.chain{list-style:none;margin:26px 0 0;padding:0;display:grid}
.chain li{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:6px 18px;align-items:baseline;padding:15px 0;border-top:1px solid var(--line-paper);transition:opacity .35s}
.chain .t{font-size:16.5px;line-height:1.35}
.chain .t small{display:block;margin-top:3px;font:12.5px "JetBrains Mono",monospace;color:var(--on-paper-dim);direction:ltr;text-align:start}
[dir="rtl"] .chain .t small{text-align:right}
.chain .w{font:500 14px "JetBrains Mono",monospace;color:var(--cobalt);white-space:nowrap;direction:ltr}
.chain .p{font:700 17px "Geologica",sans-serif;font-variant-numeric:tabular-nums;white-space:nowrap;min-width:5.6ch;text-align:end;direction:ltr}
.chain li.over .p{color:var(--cobalt)}
.chain li.wait{opacity:.28}
.chain li.now{opacity:1}
.meter{margin-top:22px}
.meter-bar{position:relative;height:10px;border-radius:99px;background:#E6E8EC}
.meter-bar i{position:absolute;inset-block:0;inset-inline-start:0;width:99.9%;background:linear-gradient(90deg,var(--cobalt),var(--cobalt-soft));border-radius:99px;transition:width .6s cubic-bezier(.2,.8,.2,1)}
[dir="rtl"] .meter-bar i{background:linear-gradient(270deg,var(--cobalt),var(--cobalt-soft))}
.meter-bar em{position:absolute;inset-block:-4px;inset-inline-start:60%;width:2px;background:var(--on-paper)}
.meter-ax{position:relative;display:flex;justify-content:space-between;gap:10px;margin-top:8px;font:12.5px "JetBrains Mono",monospace;color:var(--on-paper-dim)}
.meter-ax .th{position:absolute;inset-inline-start:60%;transform:translateX(-50%)}
[dir="rtl"] .meter-ax .th{transform:translateX(50%)}
:root[lang="ar"] .meter-ax,:root[lang="zh"] .meter-ax{font-family:var(--f-body)}
.decide{margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;padding:16px 18px;border-radius:16px;background:var(--paper)}
.decide b{font:600 15px var(--f-body)}
.decide span{font-size:14.5px;color:var(--on-paper-dim)}
.fine{margin:14px 0 0;font-size:13px;line-height:1.5;color:var(--on-paper-dim)}
.ul{list-style:none;margin:30px 0 0;padding:0;display:grid;gap:14px}
.ul li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:12px;font-size:17px;line-height:1.5}
.ul li::before{content:"";width:9px;height:9px;margin-top:9px;border-radius:50%;background:var(--cobalt)}
@media (max-width:900px){.why-grid{grid-template-columns:minmax(0,1fr)}}

/* stepper controls */
.stepper-ctl{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line-paper)}
.stepper-ctl .big-p{margin:0 auto 0 0}
[dir="rtl"] .stepper-ctl .big-p{margin:0 0 0 auto}
.stepper-state{font-size:15px;color:var(--on-paper-dim);min-height:1.5em}
.stepper-state.on{color:var(--cobalt-deep);font-weight:600}
.big-p{display:flex;align-items:baseline;gap:14px;margin-top:22px}
.big-p b{font:800 clamp(40px,4.4vw,60px)/1 "Geologica",sans-serif;letter-spacing:-.04em;font-variant-numeric:tabular-nums;direction:ltr}
.big-p span{font-size:15px;color:var(--on-paper-dim)}

/* ---------- tiles (who) ---------- */
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:clamp(48px,6vw,80px)}
.tile{position:relative;display:flex;flex-direction:column;gap:14px;min-height:300px;padding:clamp(24px,3vw,40px);border-radius:28px;background:var(--white);color:var(--on-paper);text-decoration:none;transition:transform .25s,box-shadow .25s;overflow:hidden}
.tile:hover{transform:translateY(-3px);box-shadow:0 30px 60px -40px rgba(10,11,14,.4)}
.tile .ix{font:500 12px/1.4 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--on-paper-dim);padding-inline-end:56px}
:root[lang="ar"] .tile .ix,:root[lang="zh"] .tile .ix{font:600 13.5px var(--f-body);letter-spacing:.02em;text-transform:none}
.tile h3{font-size:clamp(28px,3vw,42px);font-weight:700;letter-spacing:var(--track-soft);line-height:1.08}
.tile p{margin:0;margin-top:auto;max-width:42ch;font-size:16.5px;line-height:1.55;color:var(--on-paper-dim)}
.tile .go{position:absolute;top:clamp(24px,3vw,40px);inset-inline-end:clamp(24px,3vw,40px);width:44px;height:44px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line-paper);transition:background .2s,color .2s,border-color .2s}
.tile:hover .go{background:var(--cobalt);border-color:var(--cobalt);color:#fff}
@media (max-width:760px){.tiles{grid-template-columns:minmax(0,1fr)}.tile{min-height:240px}}

/* ---------- ruled grids (trust and friends) ---------- */
.ruled{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:clamp(48px,6vw,80px);border-top:1px solid var(--line-ink)}
.ruled > div{padding:30px 34px 34px 0;border-bottom:1px solid var(--line-ink);min-width:0}
[dir="rtl"] .ruled > div{padding:30px 0 34px 34px}
.ruled > div:nth-child(even){padding-inline-start:34px;border-inline-start:1px solid var(--line-ink)}
.ruled .kicker{color:var(--cobalt-soft)}
.ruled h3{margin-top:14px;font-size:clamp(22px,2.2vw,30px);font-weight:700;letter-spacing:var(--track-soft);line-height:1.2}
.ruled p{margin:10px 0 0;color:var(--on-ink-dim);font-size:16px;line-height:1.6;max-width:50ch}
.ruled.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.ruled.three > div:nth-child(even){padding-inline-start:0;border-inline-start:0}
.ruled.three > div:not(:nth-child(3n+1)){padding-inline-start:34px;border-inline-start:1px solid var(--line-ink)}
.paper .ruled,.white .ruled{border-top-color:var(--line-paper)}
.paper .ruled > div,.white .ruled > div{border-color:var(--line-paper)}
.paper .ruled p,.white .ruled p{color:var(--on-paper-dim)}
.paper .ruled .kicker,.white .ruled .kicker{color:var(--cobalt)}
@media (max-width:980px){
  .ruled.three{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ruled.three > div:not(:nth-child(3n+1)){padding-inline-start:0;border-inline-start:0}
  .ruled.three > div:nth-child(even){padding-inline-start:34px;border-inline-start:1px solid var(--line-ink)}
  .paper .ruled.three > div:nth-child(even),.white .ruled.three > div:nth-child(even){border-inline-start-color:var(--line-paper)}
}
@media (max-width:760px){
  .ruled,.ruled.three{grid-template-columns:minmax(0,1fr)}
  .ruled > div,.ruled > div:nth-child(even),[dir="rtl"] .ruled > div,.ruled.three > div:nth-child(even){padding-inline:0;border-inline-start:0}
}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:clamp(48px,6vw,80px)}
.cards.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{display:flex;flex-direction:column;gap:12px;padding:clamp(24px,2.6vw,36px);border-radius:24px;background:var(--white);color:var(--on-paper);min-width:0}
.white .card{background:var(--paper)}
.sec-dark .card,.sec-ink2 .card{background:var(--ink-3);color:var(--on-ink)}
.card .kicker{color:var(--cobalt)}
.sec-dark .card .kicker{color:var(--cobalt-soft)}
.card h3{font-size:clamp(21px,2vw,27px);font-weight:700;letter-spacing:var(--track-soft);line-height:1.2}
.card p{margin:0;font-size:16px;line-height:1.6;color:var(--on-paper-dim)}
.sec-dark .card p,.sec-ink2 .card p{color:var(--on-ink-dim)}
.card .ans{margin-top:auto;padding-top:16px;border-top:1px solid var(--line-paper);color:var(--on-paper)}
.sec-dark .card .ans{border-color:var(--line-ink);color:var(--on-ink-mid)}
.card .big{font:800 clamp(40px,4.4vw,60px)/1 "Geologica",sans-serif;letter-spacing:-.03em;color:var(--on-paper);font-variant-numeric:tabular-nums}
.sec-dark .card .big{color:var(--on-ink)}
@media (max-width:980px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:680px){.cards,.cards.two{grid-template-columns:minmax(0,1fr)}}

/* ---------- comparison rows ---------- */
.versus{margin-top:clamp(48px,6vw,80px);border-top:1.5px solid var(--on-paper)}
.versus-hd,.versus-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 48px}
.versus-hd{padding:16px 0;font-size:13.5px;color:var(--on-paper-dim)}
.versus-hd span:last-child{color:var(--cobalt)}
.versus-row{padding:22px 0;border-top:1px solid var(--line-paper)}
.versus-row .a{font-size:18px;line-height:1.45}
.versus-row .a::before{content:"";display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--coral);margin-inline-end:12px;vertical-align:1px}
.versus-row .b{font-size:16.5px;line-height:1.55;color:var(--on-paper-dim)}
.versus-row .b b{color:var(--on-paper);font-weight:600}
@media (max-width:760px){.versus-hd{display:none}.versus-row{grid-template-columns:minmax(0,1fr);gap:8px}}

/* ---------- tabs: one case, four readers ---------- */
.tabs{margin-top:clamp(40px,5vw,64px)}
.tablist{display:flex;flex-wrap:wrap;gap:8px}
.tablist button{padding:12px 18px;border-radius:999px;border:1px solid var(--line-ink);background:transparent;color:var(--on-ink-dim);font:500 15px/1 var(--f-body);cursor:pointer;transition:all .2s}
.tablist button:hover{color:var(--on-ink);border-color:rgba(243,245,249,.3)}
.tablist button[aria-selected="true"]{background:var(--on-ink);border-color:var(--on-ink);color:var(--ink)}
.tabpanel{margin-top:24px;padding:clamp(24px,3vw,44px);border-radius:24px;background:var(--ink-3);border:1px solid var(--line-ink)}
.tabpanel .who{font-size:14px;color:var(--on-ink-dim)}
.tabpanel ol{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:14px;counter-reset:l}
.tabpanel li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:14px;font-size:clamp(16px,1.4vw,18.5px);line-height:1.6;color:var(--on-ink);counter-increment:l}
.tabpanel li::before{content:counter(l);font:500 13px/1.9 "JetBrains Mono",monospace;color:var(--cobalt-soft)}
.tabpanel li span{overflow-wrap:anywhere}

/* ---------- actions ---------- */
.acts{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:12px}
.acts li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 20px;align-items:start;padding:20px 22px;border-radius:18px;background:var(--paper);color:var(--on-paper)}
.sec-dark .acts li{background:var(--ink-3);color:var(--on-ink)}
.acts b{font:600 17px/1.35 var(--f-body)}
.acts p{grid-column:1/-1;margin:0;font-size:15px;line-height:1.55;color:var(--on-paper-dim)}
.sec-dark .acts p{color:var(--on-ink-dim)}
.acts .tags{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}
.tag{display:inline-block;padding:5px 10px;border-radius:999px;font:500 12.5px/1.2 var(--f-body);background:rgba(47,92,255,.1);color:var(--cobalt-deep);white-space:nowrap}
.tag.warn{background:rgba(255,90,60,.12);color:var(--coral-deep)}
.sec-dark .tag{background:rgba(110,139,255,.16);color:#AFC0FF}
.sec-dark .tag.warn{background:rgba(255,90,60,.16);color:#FF9A85}
.wait-chip{display:inline-flex;align-items:center;gap:8px;margin-top:18px;padding:10px 14px;border-radius:12px;border:1px dashed currentColor;font-size:14.5px;opacity:.85}
@media (max-width:560px){.acts li{grid-template-columns:minmax(0,1fr)}.acts .tags{justify-content:flex-start}}

/* ---------- scenario timeline ---------- */
.scenario{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(32px,6vw,96px);align-items:start}
.timeline{list-style:none;margin:0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;inset-block:12px;inset-inline-start:11px;width:1px;background:var(--line-ink)}
.timeline li{position:relative;display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:4px 18px;padding:14px 0}
.timeline li::before{content:"";grid-row:1/3;width:23px;height:23px;margin-top:2px;border-radius:50%;background:var(--ink);border:1px solid var(--line-ink);box-shadow:inset 0 0 0 6px var(--ink),inset 0 0 0 12px var(--cobalt)}
.timeline b{font:600 17px/1.35 var(--f-body)}
.timeline small{grid-column:2;font:12.5px "JetBrains Mono",monospace;color:var(--on-ink-dim);direction:ltr;text-align:start}
[dir="rtl"] .timeline small{text-align:right}
.timeline .p{grid-row:1/3;grid-column:3;font:700 16px "Geologica",sans-serif;color:var(--cobalt-soft);direction:ltr;align-self:center;white-space:nowrap}
.timeline .lr{color:var(--on-ink-dim);font-weight:500;margin-inline-end:10px;font-family:"JetBrains Mono",monospace;font-size:13px}
.timeline li.end::before{box-shadow:inset 0 0 0 6px var(--ink),inset 0 0 0 12px var(--coral)}
.verdict{margin-top:20px;padding:18px 20px;border-radius:18px;background:var(--ink-3);border:1px solid var(--line-ink)}
.verdict b{display:block;font:700 20px/1.3 var(--f-display)}
.verdict span{display:block;margin-top:4px;font-size:14.5px;color:var(--on-ink-dim)}
@media (max-width:900px){.scenario{grid-template-columns:minmax(0,1fr)}}

/* ---------- data table and bars ---------- */
.table-wrap{margin-top:clamp(36px,5vw,56px);overflow-x:auto;-webkit-overflow-scrolling:touch;border-top:1.5px solid var(--on-paper)}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:16px}
th,td{padding:16px 14px;text-align:start;border-bottom:1px solid var(--line-paper);white-space:nowrap}
th{font:500 12.5px/1.3 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--on-paper-dim);white-space:normal}
:root[lang="ar"] th,:root[lang="zh"] th{font:600 13.5px var(--f-body);letter-spacing:0;text-transform:none}
td.n{font-variant-numeric:tabular-nums;font-family:"Geologica",sans-serif;font-weight:600}
td.good{color:var(--cobalt)}
td.bad{color:var(--coral-deep)}
tr.total td{font-weight:700;border-bottom:0;border-top:1.5px solid var(--on-paper)}
th:first-child,td:first-child{padding-inline-start:0}
.bars{display:grid;gap:18px;margin-top:clamp(36px,5vw,56px)}
.bar-row{display:grid;grid-template-columns:minmax(0,180px) minmax(0,1fr) 92px;gap:16px;align-items:center}
.bar-row .l{font-size:15px;color:var(--on-paper-dim)}
.bar-track{height:28px;border-radius:8px;background:rgba(10,11,14,.05);overflow:hidden}
.bar-track i{display:block;height:100%;border-radius:8px;background:var(--coral);transform-origin:0 50%;transform:scaleX(var(--v,0));transition:transform 1s cubic-bezier(.2,.8,.2,1)}
[dir="rtl"] .bar-track i{transform-origin:100% 50%}
.bar-track i.c{background:var(--cobalt)}
.bar-row .v{font:700 20px "Geologica",sans-serif;font-variant-numeric:tabular-nums;text-align:end;direction:ltr}
@media (max-width:640px){.bar-row{grid-template-columns:minmax(0,1fr) 70px}.bar-row .l{grid-column:1/-1}}
.pill-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding:0;list-style:none}
.pill-list li{padding:8px 13px;border-radius:999px;font-size:14.5px;background:var(--white);border:1px solid var(--line-paper)}
.white .pill-list li{background:var(--paper)}
.pill-list.miss li{background:transparent;border-style:dashed;color:var(--on-paper-dim)}
.two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px clamp(32px,5vw,72px);margin-top:clamp(40px,5vw,64px)}
.two-col h3{font-size:clamp(20px,1.8vw,24px);font-weight:700}
.two-col p{margin:12px 0 0;font-size:16px;line-height:1.6;color:var(--on-paper-dim)}
.sec-dark .two-col p{color:var(--on-ink-dim)}
@media (max-width:820px){.two-col{grid-template-columns:minmax(0,1fr)}}

/* ---------- big numbers row ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:clamp(48px,6vw,80px);border-top:1px solid var(--line-ink)}
.stats > div{padding:26px 24px 8px 0;min-width:0}
.stats > div + div{padding-inline-start:24px;border-inline-start:1px solid var(--line-ink)}
.stats b{display:block;font:700 clamp(34px,4vw,56px)/1 "Geologica",sans-serif;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stats span{display:block;margin-top:12px;font-size:15px;line-height:1.5;color:var(--on-ink-dim)}
.paper .stats,.white .stats{border-top-color:var(--line-paper)}
.paper .stats > div + div,.white .stats > div + div{border-color:var(--line-paper)}
.paper .stats span,.white .stats span{color:var(--on-paper-dim)}
.stats.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){
  .stats,.stats.three{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats > div:nth-child(odd){padding-inline-start:0;border-inline-start:0}
}
@media (max-width:520px){
  .stats,.stats.three{grid-template-columns:minmax(0,1fr)}
  .stats > div,.stats > div + div{padding-inline:0;border-inline-start:0}
}

/* ---------- honest limits ---------- */
.limits{list-style:none;margin:clamp(40px,5vw,64px) 0 0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.limits li{padding:clamp(22px,2.6vw,32px);border-radius:22px;border:1px solid var(--line-paper);background:var(--white)}
.white .limits li{background:var(--paper);border-color:transparent}
.limits h3{font-size:clamp(19px,1.7vw,23px);font-weight:700;line-height:1.3}
.limits p{margin:10px 0 0;font-size:16px;line-height:1.6;color:var(--on-paper-dim)}
@media (max-width:760px){.limits{grid-template-columns:minmax(0,1fr)}}

/* ---------- collapse (40 → 1) ---------- */
.collapse{display:grid;grid-template-columns:auto auto minmax(0,1fr);gap:clamp(20px,4vw,56px);align-items:center;margin-top:clamp(40px,5vw,64px);padding:clamp(24px,3vw,44px);border-radius:28px;background:var(--ink-3);border:1px solid var(--line-ink)}
.collapse .many{display:grid;grid-template-columns:repeat(10,16px);gap:7px}
.collapse .many i{width:16px;height:16px;border-radius:5px;background:rgba(255,90,60,.8)}
.collapse .one{max-width:340px}
.collapse .to{font-size:28px;color:var(--on-ink-dim)}
[dir="rtl"] .collapse .to{transform:scaleX(-1)}
.collapse .one{padding:18px;border-radius:16px;background:var(--cobalt);color:#fff}
.collapse .one b{display:block;font:700 18px/1.3 var(--f-display)}
.collapse .one span{display:block;margin-top:6px;font-size:14px;opacity:.85}
.collapse .cap{grid-column:1/-1;font-size:14.5px;color:var(--on-ink-dim);margin:0}
@media (max-width:760px){.collapse{grid-template-columns:minmax(0,1fr)}.collapse .to{transform:rotate(90deg);justify-self:center}[dir="rtl"] .collapse .to{transform:rotate(90deg)}}

/* ---------- chips (frameworks) ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;padding:0;list-style:none}
.chips li{padding:12px 16px;border-radius:14px;background:var(--white);border:1px solid var(--line-paper);font:600 15px/1.2 var(--f-body)}
.chips li small{display:block;margin-top:4px;font-weight:400;font-size:13px;color:var(--on-paper-dim)}

/* ---------- pilot steps ---------- */
.plan{list-style:none;margin:clamp(40px,5vw,64px) 0 0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;counter-reset:s}
.plan li{counter-increment:s;padding:24px 22px;border-radius:22px;background:var(--white);min-width:0}
.plan li::before{content:"0" counter(s);display:block;font:500 13px "JetBrains Mono",monospace;color:var(--cobalt)}
.plan h3{margin-top:14px;font-size:19px;font-weight:700;line-height:1.25}
.plan p{margin:8px 0 0;font-size:15px;line-height:1.55;color:var(--on-paper-dim)}
@media (max-width:1100px){.plan{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:700px){.plan{grid-template-columns:minmax(0,1fr)}}

/* ---------- form ---------- */
.form-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,6vw,96px);align-items:start}
.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:grid;gap:8px;min-width:0}
.field.full{grid-column:1/-1}
.field label,.field .lbl{font-size:14px;font-weight:500;color:var(--on-paper)}
.field label i{font-style:normal;color:var(--on-paper-dim);font-weight:400}
.field input,.field select,.field textarea{width:100%;padding:15px 16px;border-radius:14px;border:1px solid rgba(10,11,14,.16);background:var(--white);color:var(--on-paper);font:16px/1.4 var(--f-body);transition:border-color .2s,box-shadow .2s;appearance:none;-webkit-appearance:none}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--on-paper-dim) 50%),linear-gradient(135deg,var(--on-paper-dim) 50%,transparent 50%);background-position:calc(100% - 22px) 50%,calc(100% - 16px) 50%;background-size:6px 6px;background-repeat:no-repeat;padding-inline-end:44px}
[dir="rtl"] .field select{background-position:22px 50%,16px 50%}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--cobalt);box-shadow:0 0 0 4px rgba(47,92,255,.15)}
.field input:user-invalid,.field select:user-invalid{border-color:var(--coral)}
.check{grid-column:1/-1;display:grid;grid-template-columns:22px minmax(0,1fr);gap:12px;align-items:start;font-size:14.5px;line-height:1.5;color:var(--on-paper-dim)}
.check input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--cobalt)}
.check a{color:var(--on-paper)}
.hp{position:absolute;inset-inline-start:-10000px;width:1px;height:1px;overflow:hidden}
.form .btn{grid-column:1/-1;justify-self:start;margin-top:6px}
.status{grid-column:1/-1;margin:0;padding:16px 18px;border-radius:14px;font-size:15.5px;line-height:1.55}
.status.ok{background:rgba(47,92,255,.08);color:var(--cobalt-deep)}
.status.err{background:rgba(255,90,60,.1);color:var(--coral-deep)}
.status .btn{margin-top:12px}
.need{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:16px}
.need li{padding:18px 20px;border-radius:16px;background:var(--paper)}
.need b{display:block;font:600 16px/1.35 var(--f-body)}
.need span{display:block;margin-top:4px;font-size:15px;line-height:1.5;color:var(--on-paper-dim)}
@media (max-width:900px){.form-grid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:560px){.form{grid-template-columns:minmax(0,1fr)}}

/* ---------- FAQ ---------- */
.faq{margin-top:clamp(40px,5vw,64px);border-top:1.5px solid var(--on-paper)}
.faq details{border-bottom:1px solid var(--line-paper)}
.faq summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:22px 0;cursor:pointer;list-style:none;font:600 clamp(18px,1.6vw,21px)/1.35 var(--f-display)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line-paper);font:400 20px/1 var(--f-body);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 24px;max-width:70ch;font-size:16.5px;line-height:1.65;color:var(--on-paper-dim)}

/* ---------- prose (privacy) ---------- */
.prose{max-width:72ch}
.prose h2{margin:48px 0 12px;font-size:clamp(22px,2vw,28px);font-weight:700}
.prose p,.prose li{font-size:17px;line-height:1.7;color:var(--on-paper-dim)}
.prose ul{padding-inline-start:20px}
.prose strong{color:var(--on-paper)}

/* ---------- appsec teaser on home ---------- */
.teaser{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,6vw,96px);align-items:end}
.teaser .stats{margin-top:0}
@media (max-width:900px){.teaser{grid-template-columns:minmax(0,1fr)}}

/* ---------- cta ---------- */
.cta{background:var(--cobalt);color:#fff;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset-inline-end:-12%;top:-40%;width:70vw;max-width:900px;aspect-ratio:1;border-radius:50%;border:1px solid rgba(255,255,255,.18);box-shadow:0 0 0 80px rgba(255,255,255,.04),0 0 0 160px rgba(255,255,255,.03)}
.cta .wrap{position:relative;padding-block:clamp(88px,11vw,150px)}
.cta .kicker{color:rgba(255,255,255,.7)}
.cta h2{margin-top:20px;font-weight:800;font-size:clamp(42px,7vw,108px);line-height:var(--lh-display);letter-spacing:var(--track-tight);max-width:13ch}
:root[lang="zh"] .cta h2{max-width:10em}
.cta p{margin:28px 0 0;max-width:52ch;font-size:clamp(17px,1.5vw,20px);line-height:1.6;color:rgba(255,255,255,.84)}
.cta .btn{margin-top:36px;background:#fff;color:var(--cobalt-deep)}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:var(--on-ink-dim);padding-block:64px calc(40px + env(safe-area-inset-bottom,0px))}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px}
.foot .logo{color:var(--on-ink)}
.foot p{margin:16px 0 0;max-width:34ch;font-size:15px;line-height:1.55}
.foot h4{margin:0 0 14px;font:500 12px var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--on-ink)}
:root[lang="ar"] .foot h4,:root[lang="zh"] .foot h4{font:600 14px var(--f-body);letter-spacing:0;text-transform:none}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;font-size:15px}
.foot a{text-decoration:none}
.foot a:hover{color:var(--on-ink)}
.foot-langs{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:22px;font-size:14px}
.foot-langs a[aria-current="true"]{color:var(--on-ink)}
.foot-bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;margin-top:56px;padding-top:22px;border-top:1px solid var(--line-ink);font-size:13.5px}
@media (max-width:860px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.foot-grid > div:first-child{grid-column:1/-1}}

/* ---------- reveal ---------- */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .rv{opacity:1;transform:none}
}
@media print{
  .top,.drawer,.hero canvas,.orbits,.cta::before{display:none!important}
  body,.sec-dark,.sec-ink2,.hero,.page-hero{background:#fff!important;color:#000!important}
}

/* ---------- small pieces ---------- */
.sub-h{margin-top:clamp(56px,7vw,88px);font-size:clamp(22px,2.2vw,30px);font-weight:700;letter-spacing:var(--track-soft)}
.sub-h.sm{margin-top:36px;font-size:clamp(18px,1.6vw,21px)}
.mt{margin-top:32px}
.sub-h + .stats{margin-top:24px}
tbody th{font:600 16px/1.3 var(--f-body);letter-spacing:0;text-transform:none;color:var(--on-paper)}
tr.total th{border-bottom:0;border-top:1.5px solid var(--on-paper)}
.limits li.wide{grid-column:1/-1}
.sec-dark .fine,.sec-ink2 .fine,.fine.on-ink{color:var(--on-ink-dim)}
.fine.on-ink{margin-top:28px;font-size:14px;max-width:80ch}
.note{margin:32px 0 0;padding:18px 20px;border-radius:16px;border:1px dashed rgba(10,11,14,.25);font-size:15.5px;line-height:1.6;color:var(--on-paper-dim);max-width:80ch}
.page-hero.compact{padding-bottom:56px}
.page-hero.compact h1{font-size:clamp(36px,5vw,64px)}
.page-hero.compact::after{display:none}
.teaser .stats{grid-template-columns:minmax(0,1fr);border-top:0}
.teaser .stats > div,.teaser .stats > div + div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:baseline;padding:22px 0;border-inline-start:0;border-top:1px solid var(--line-paper)}
.teaser .stats span{margin-top:0}
.teaser .stats b{font-size:clamp(30px,3vw,42px)}
@media (max-width:520px){.teaser .stats > div,.teaser .stats > div + div{grid-template-columns:minmax(0,1fr);gap:8px}}
@media (max-width:560px){.meter-ax span:last-child{display:none}}

/* ---------- root chooser and 404 ---------- */
.choose{min-height:100svh;display:flex;align-items:center;padding-block:64px}
.choose .wrap{width:100%}
.choose-logo{width:48px;height:48px;color:var(--on-ink)}
.choose h1{margin-top:20px;font:800 clamp(40px,6vw,72px)/1 "Geologica",sans-serif;letter-spacing:-.03em}
.choose-list{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.choose-list a{display:block;height:100%;padding:22px;border-radius:20px;background:var(--ink-3);border:1px solid var(--line-ink);text-decoration:none;transition:border-color .2s,transform .2s}
.choose-list a:hover{border-color:var(--cobalt);transform:translateY(-2px)}
.choose-list b{display:block;font-size:20px;font-weight:600}
.choose-list span{display:block;margin-top:6px;font-size:14.5px;line-height:1.5;color:var(--on-ink-dim)}
.choose-list [lang="ar"]{font-family:"IBM Plex Sans Arabic",sans-serif;text-align:right}
@media (max-width:860px){.choose-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.choose-list{grid-template-columns:minmax(0,1fr)}}

/* ---------- pricing ---------- */
.cards.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1100px){.cards.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.cards.four{grid-template-columns:minmax(0,1fr)}}
.card.price{gap:8px}
.card.price .big{margin-top:10px}
.card .big.sm{font-size:clamp(30px,3vw,40px);margin-top:6px}
.card .unit{margin:0;font-size:14px;color:var(--on-paper-dim)}
.card.price .unit + p{margin-top:12px;padding-top:14px;border-top:1px solid var(--line-paper)}
.card.lead-band{box-shadow:inset 0 0 0 2px var(--cobalt)}
.custom-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px;margin-top:18px;padding:clamp(22px,2.6vw,32px);border-radius:24px;background:var(--white)}
.custom-row b{display:block;font:700 clamp(20px,1.8vw,24px)/1.3 var(--f-display)}
.custom-row span{display:block;margin-top:6px;font-size:16px;color:var(--on-paper-dim);max-width:62ch}
.ul.two{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 48px;margin-top:clamp(36px,5vw,56px)}
@media (max-width:760px){.ul.two{grid-template-columns:minmax(0,1fr)}}
.calc-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(32px,6vw,96px);align-items:start}
@media (max-width:900px){.calc-grid{grid-template-columns:minmax(0,1fr)}}
.calc{padding:clamp(22px,3vw,40px);border-radius:28px;background:var(--ink-3);border:1px solid var(--line-ink)}
.calc label{font-size:15px;color:var(--on-ink-mid)}
.calc-in{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;align-items:center;margin-top:12px}
.calc-in input[type=number]{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--line-ink);background:var(--ink);color:var(--on-ink);font:600 20px/1 "Geologica",sans-serif;font-variant-numeric:tabular-nums}
.calc-in input[type=number]:focus{outline:0;border-color:var(--cobalt);box-shadow:0 0 0 4px rgba(47,92,255,.25)}
.calc-in input[type=range]{width:100%;accent-color:var(--cobalt)}
.calc-out{margin-top:28px;padding-top:24px;border-top:1px solid var(--line-ink);min-height:150px}
.calc-total{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px}
.calc-total b{font:800 clamp(44px,5.4vw,72px)/1 "Geologica",sans-serif;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.calc-total span,.calc-avg span{font-size:15px;color:var(--on-ink-dim)}
.calc-avg{margin-top:10px}
.calc-avg b{font:700 20px "Geologica",sans-serif;color:var(--cobalt-soft)}
.calc-note{margin:12px 0 0;font-size:14.5px;line-height:1.5;color:var(--on-ink-dim);min-height:1.5em}
.calc-examples{list-style:none;margin:22px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.calc-examples button{padding:9px 14px;border-radius:999px;border:1px solid var(--line-ink);background:transparent;color:var(--on-ink-dim);font:500 14px var(--f-body);cursor:pointer}
.calc-examples button:hover{color:var(--on-ink);border-color:rgba(243,245,249,.3)}
@media (max-width:520px){.calc-in{grid-template-columns:minmax(0,1fr)}}
.price-note{max-width:80ch;padding:clamp(22px,3vw,36px);border-radius:24px;background:var(--paper);border-inline-start:4px solid var(--cobalt)}
.price-note h2{font-size:clamp(20px,1.8vw,24px);font-weight:700}
.price-note p{margin:12px 0 0;font-size:16px;line-height:1.65;color:var(--on-paper-dim)}
.card .big.word{font-size:clamp(26px,2.3vw,40px);line-height:1.15;overflow-wrap:anywhere}