/* Vibe design system. Concept: "review mode". Drafting-paper canvas, ink type, and one red marker that circles what matters. */
@font-face{font-family:"Schibsted Grotesk";font-style:normal;font-weight:400 900;font-display:swap;src:url(/assets/fonts/schibsted-grotesk-latin-wght-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Schibsted Grotesk";font-style:normal;font-weight:400 900;font-display:swap;src:url(/assets/fonts/schibsted-grotesk-latin-ext-wght-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Schibsted Grotesk";font-style:italic;font-weight:400 900;font-display:swap;src:url(/assets/fonts/schibsted-grotesk-latin-wght-italic.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"Kalam";font-weight:400;font-display:swap;src:url(/assets/fonts/kalam-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"Kalam";font-weight:400;font-display:swap;src:url(/assets/fonts/kalam-latin-ext-400-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+1E00-1EFF}
@font-face{font-family:"Kalam";font-weight:700;font-display:swap;src:url(/assets/fonts/kalam-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F}
@font-face{font-family:"JetBrains Mono";font-weight:100 800;font-display:swap;src:url(/assets/fonts/jetbrains-mono-latin-wght-normal.woff2) format("woff2")}

:root{
  --paper:#F6F7F5; --paper-2:#ECEEEB; --card:#FFFFFF;
  --ink:#16181D; --ink-2:#3D424B; --graphite:#5E6470; --rule:#D8DBDF; --grid:rgba(22,24,29,.055);
  --red:#D92D20; --red-ink:#B42318; --red-wash:#FDECEA;
  --green:#0F7A55; --green-wash:#E5F4EE;
  --amber:#B54708; --amber-wash:#FEF3E2; --blue:#2D5BD9; --blue-wash:#EAF0FD;
  --focus:#2D5BD9;
  --sans:"Schibsted Grotesk",ui-sans-serif,system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans CJK SC","Noto Sans JP","Microsoft YaHei",sans-serif;
  --hand:"Kalam","Comic Neue","PingFang SC","Hiragino Maru Gothic ProN",cursive;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --step--1:clamp(.84rem,.82rem + .1vw,.9rem); --step-0:clamp(1rem,.97rem + .15vw,1.07rem);
  --step-1:clamp(1.2rem,1.1rem + .4vw,1.38rem); --step-2:clamp(1.45rem,1.25rem + .9vw,1.9rem);
  --step-3:clamp(1.85rem,1.45rem + 1.8vw,2.8rem); --step-4:clamp(2.3rem,1.6rem + 3.4vw,4.4rem);
  --r-s:6px; --r-m:10px; --r-l:16px;
  --shadow:0 1px 0 rgba(22,24,29,.06),0 8px 24px -12px rgba(22,24,29,.18);
  --wrap:1200px; --gutter:clamp(16px,4vw,40px); --header:64px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#121418; --paper-2:#1A1D22; --card:#1B1E24; --ink:#ECEDEA; --ink-2:#C7CAD0; --graphite:#9AA0AA; --rule:#2C3038; --grid:rgba(236,237,234,.045);
  --red:#FF5B4D; --red-ink:#FF8075; --red-wash:#3A1916; --green:#3CC48C; --green-wash:#12301F; --amber:#F5A94A; --amber-wash:#3A2A12; --blue:#7FA2FF; --blue-wash:#1A2440; --focus:#7FA2FF;
  --shadow:0 1px 0 rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#121418; --paper-2:#1A1D22; --card:#1B1E24; --ink:#ECEDEA; --ink-2:#C7CAD0; --graphite:#9AA0AA; --rule:#2C3038; --grid:rgba(236,237,234,.045);
  --red:#FF5B4D; --red-ink:#FF8075; --red-wash:#3A1916; --green:#3CC48C; --green-wash:#12301F; --amber:#F5A94A; --amber-wash:#3A2A12; --blue:#7FA2FF; --blue-wash:#1A2440; --focus:#7FA2FF;
  --shadow:0 1px 0 rgba(0,0,0,.4),0 10px 30px -14px rgba(0,0,0,.7); color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--header) + 16px)}
body{margin:0;background:var(--paper);color:var(--ink);font:400 var(--step-0)/1.6 var(--sans);font-kerning:normal;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;overflow-x:hidden}
:lang(zh),:lang(ja){line-height:1.8}
:lang(zh) body,:lang(ja) body{letter-spacing:.01em}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.2em}
a:hover{color:var(--red-ink)}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px;border-radius:4px}
::selection{background:var(--red-wash);color:var(--ink)}
.wrap{width:min(100% - 2*var(--gutter),var(--wrap));margin-inline:auto}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--paper);padding:10px 14px;border-radius:var(--r-s)}
.skip:focus{top:12px}
.hand{font-family:var(--hand);font-weight:400;letter-spacing:0}
.mark{color:var(--red);pointer-events:none}

/* Buttons */
.btn{--b:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:.55em;min-height:44px;padding:.62em 1.15em;border-radius:999px;border:1.5px solid var(--b);background:var(--b);color:var(--paper);font:600 var(--step-0)/1.1 var(--sans);text-decoration:none;cursor:pointer;transition:transform .15s ease,background .15s ease,color .15s ease}
.btn:hover{color:var(--paper);background:var(--red);border-color:var(--red)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn.small{min-height:36px;padding:.4em .85em;font-size:var(--step--1)}
.btn[disabled]{opacity:.55;cursor:progress}
.btn svg{width:1.1em;height:1.1em;flex:none}
.icon-btn svg,.search-btn svg,.kit svg{flex:none}
.linkish{background:none;border:0;padding:0;font:inherit;color:inherit;text-decoration:underline;text-underline-offset:.2em;cursor:pointer}

/* Header */
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.scrolled{border-bottom-color:var(--rule)}
.bar{height:var(--header);display:flex;align-items:center;gap:20px}
.logo{display:inline-flex;align-items:flex-end;gap:2px;text-decoration:none;color:var(--ink);flex:none}
.logo .word{font:800 1.6rem/1 var(--sans);letter-spacing:-.045em}
.logo .tick{width:26px;height:20px;color:var(--red);margin:0 0 3px 1px}
.logo:hover{color:var(--ink)}
.nav{display:flex;align-items:center;gap:2px;margin-inline-start:12px}
.nav a{padding:.45em .7em;border-radius:var(--r-s);text-decoration:none;color:var(--ink-2);font-weight:500;font-size:.95rem;white-space:nowrap}
.nav a:hover{color:var(--ink);background:var(--paper-2)}
.nav a[aria-current="page"]{color:var(--ink);background:var(--paper-2)}
.bar-tools{margin-inline-start:auto;display:flex;align-items:center;gap:6px}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:var(--r-s);border:1px solid transparent;background:transparent;color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--paper-2)}
.icon-btn svg{width:20px;height:20px}
.search-btn{display:inline-flex;align-items:center;gap:10px;height:40px;padding:0 10px 0 12px;border:1px solid var(--rule);border-radius:var(--r-s);background:var(--card);color:var(--graphite);font:inherit;font-size:.9rem;cursor:pointer;min-width:200px}
.search-btn:hover{border-color:var(--graphite);color:var(--ink)}
.search-btn svg{width:17px;height:17px}
.search-btn kbd{margin-inline-start:auto}
kbd{font:500 .75rem/1 var(--mono);padding:3px 6px;border:1px solid var(--rule);border-bottom-width:2px;border-radius:5px;color:var(--graphite);background:var(--paper)}
.lang-select{position:relative}
.lang-select select{appearance:none;height:40px;padding:0 30px 0 34px;border:1px solid var(--rule);border-radius:var(--r-s);background:var(--card);color:var(--ink);font:500 .9rem var(--sans);cursor:pointer}
.lang-select svg{position:absolute;pointer-events:none;width:17px;height:17px;top:11.5px}
.lang-select .globe{left:10px;color:var(--graphite)}
.lang-select .chev{right:8px;width:15px;color:var(--graphite)}
.account-link{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.account-link svg{width:18px;height:18px}
.menu-btn{display:none}
@media (max-width:1380px){.search-btn{min-width:0}.search-btn .label,.search-btn kbd{display:none}}
@media (max-width:1180px){.nav{display:none}.menu-btn{display:inline-grid}}
@media (max-width:640px){.lang-select select{width:40px;padding:0;color:transparent}.lang-select .chev{display:none}.lang-select .globe{left:11px;color:var(--ink)}.account-link .label{display:none}.account-link.btn{padding:0;width:40px;border-radius:var(--r-s)}}

/* Drawer */
.drawer{position:fixed;inset:0;z-index:60;display:none}
.drawer.open{display:block}
.drawer .scrim{position:absolute;inset:0;background:rgba(10,12,16,.45)}
.drawer .panel{position:absolute;inset:0 0 0 auto;width:min(360px,88vw);background:var(--paper);padding:16px 20px 32px;overflow:auto;box-shadow:var(--shadow);animation:slidein .2s ease}
@keyframes slidein{from{transform:translateX(24px);opacity:0}}
.drawer nav{display:grid;gap:2px;margin-top:12px}
.drawer nav a{padding:.8em .6em;border-radius:var(--r-s);text-decoration:none;font-weight:600;font-size:1.1rem}
.drawer nav a:hover,.drawer nav a[aria-current="page"]{background:var(--paper-2)}
.drawer-head{display:flex;justify-content:space-between;align-items:center}

/* Palette (search) */
.palette{position:fixed;inset:0;z-index:70;display:none;align-items:flex-start;justify-content:center;padding:10vh 16px 16px}
.palette.open{display:flex}
.palette .scrim{position:absolute;inset:0;background:rgba(10,12,16,.5)}
.palette .box{position:relative;width:min(640px,100%);background:var(--card);border:1px solid var(--rule);border-radius:var(--r-l);box-shadow:var(--shadow);overflow:hidden}
.palette .field{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--rule)}
.palette .field svg{width:20px;height:20px;color:var(--graphite);flex:none}
.palette input{flex:1;border:0;background:transparent;font:500 1.1rem var(--sans);color:var(--ink);outline:none;min-width:0}
.palette ul{list-style:none;margin:0;padding:6px;max-height:min(60vh,480px);overflow:auto}
.palette li a{display:block;padding:10px 12px;border-radius:var(--r-m);text-decoration:none}
.palette li a .t{font-weight:600;display:block}
.palette li a .s{font-size:.88rem;color:var(--graphite);display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.palette li[aria-selected="true"] a{background:var(--paper-2)}
.palette .empty{padding:24px 16px;color:var(--graphite)}
.palette mark{background:var(--red-wash);color:inherit;border-radius:3px;padding:0 1px}

/* Hero */
.hero{position:relative;padding:clamp(40px,7vw,96px) 0 clamp(48px,7vw,88px);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:28px 28px;background-position:-1px -1px;border-bottom:1px solid var(--rule)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:center}
.hero h1{font-size:var(--step-4);line-height:1.02;letter-spacing:-.035em;font-weight:800;margin:0 0 .45em;text-wrap:balance;max-width:14ch}
:lang(zh) .hero h1,:lang(ja) .hero h1{letter-spacing:0;line-height:1.2;max-width:none;font-size:clamp(2rem,1.4rem + 2.8vw,3.6rem)}
.hero .lede{font-size:var(--step-1);line-height:1.5;color:var(--ink-2);max-width:36em;margin:0 0 1.6em}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero .note{margin:16px 0 0;color:var(--graphite);font-size:var(--step--1)}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero h1{max-width:18ch}}

/* Review card: the brand's one loud moment */
.review{position:relative;margin:0;background:var(--card);border:1px solid var(--rule);border-radius:var(--r-l);box-shadow:var(--shadow);overflow:hidden}
.review-head{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--rule);font:500 .85rem var(--mono);color:var(--graphite)}
.review-head .dots{display:flex;gap:6px}
.review-head .dots i{width:10px;height:10px;border-radius:50%;background:var(--rule)}
.review pre{margin:0;padding:18px 18px 8px;font:400 clamp(.74rem,.7rem + .2vw,.86rem)/1.75 var(--mono);color:var(--ink-2);overflow:visible;white-space:pre-wrap;word-break:break-word}
.review .k{color:var(--blue)} .review .s{color:var(--green)} .review .c{color:var(--graphite)}
.flag{position:relative;display:inline-block;color:var(--ink);font-weight:600}
.flag .ring{position:absolute;left:-8%;top:-26%;width:116%;height:152%;color:var(--red);pointer-events:none}
.flag .ring svg{width:100%;height:100%}
.anno{display:flex;align-items:flex-start;gap:6px;margin:2px 0 8px;padding-inline-start:2ch;font:400 1.08rem/1.25 var(--hand);color:var(--red-ink);white-space:normal}
.anno svg{width:34px;height:22px;flex:none;color:var(--red);transform:scaleY(-1) rotate(-12deg);margin-top:-4px}
.review-foot{display:flex;align-items:center;gap:10px;padding:12px 16px;border-top:1px dashed var(--rule);font:700 1.2rem var(--hand);color:var(--red-ink)}
.review-foot svg{width:30px;height:30px;color:var(--red)}
@media (prefers-reduced-motion:no-preference){
  .js .flag .ring{clip-path:inset(0 100% 0 0);animation:draw .55s cubic-bezier(.6,.1,.3,1) forwards}
  .js .anno{opacity:0;transform:translateY(-3px);animation:fadein .4s ease forwards}
  .js .review-foot{opacity:0;animation:fadein .4s ease forwards;animation-delay:2.2s}
  .js .f1 .ring{animation-delay:.7s}.js .a1{animation-delay:1s}
  .js .f2 .ring{animation-delay:1.2s}.js .a2{animation-delay:1.5s}
  .js .f3 .ring{animation-delay:1.7s}.js .a3{animation-delay:2s}
}
@keyframes draw{to{clip-path:inset(0 0 0 0)}}
@keyframes fadein{to{opacity:1;transform:none}}

/* Sections */
.section{padding:clamp(48px,6vw,92px) 0}
.section + .section{border-top:1px solid var(--rule)}
.section-head{max-width:46rem;margin-bottom:clamp(28px,4vw,48px)}
.section h2{font-size:var(--step-3);line-height:1.08;letter-spacing:-.025em;font-weight:750;margin:0 0 .4em;text-wrap:balance}
:lang(zh) .section h2,:lang(ja) .section h2{letter-spacing:0;line-height:1.3}
.section-head p{font-size:var(--step-1);color:var(--ink-2);margin:0;line-height:1.5}
.tinted{background:var(--paper-2)}

/* Story */
.story{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(32px,6vw,80px);align-items:start}
.story-q{font-size:var(--step-3);font-weight:800;letter-spacing:-.03em;line-height:1.05;margin:0;position:relative}
.story-q .hand{display:block;font-size:.9em;color:var(--red-ink);margin-top:.3em;font-weight:400;letter-spacing:0;transform:rotate(-2deg);transform-origin:left}
.story p{font-size:var(--step-1);line-height:1.55;color:var(--ink-2);margin:0 0 1em}
.story .answer{color:var(--ink);font-weight:600}
.wall{margin-top:clamp(36px,5vw,56px);display:flex;flex-wrap:wrap;gap:8px;mask-image:linear-gradient(180deg,#000 55%,transparent);-webkit-mask-image:linear-gradient(180deg,#000 55%,transparent);max-height:260px;overflow:hidden}
.wall span{padding:.35em .7em;border:1px solid var(--rule);border-radius:999px;font-size:.92rem;background:var(--card);color:var(--ink-2);white-space:nowrap}
.wall span.now{border-color:color-mix(in srgb,var(--red) 45%,var(--rule));color:var(--ink)}
.wall-link{display:inline-flex;margin-top:8px;font-weight:600}
@media (max-width:860px){.story{grid-template-columns:1fr}}

/* Receipts */
.receipts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);list-style:none;margin:0;padding:0}
.receipts li{border-top:2px solid var(--ink);padding-top:18px}
.receipts .fig{position:relative;display:inline-block;font-size:clamp(2.6rem,2rem + 2.6vw,4rem);font-weight:800;letter-spacing:-.04em;line-height:1;margin-bottom:22px}
.receipts .fig .under{position:absolute;left:-4%;bottom:-.28em;height:.3em;width:max(108%,1.6em);color:var(--red)}
.receipts .fig .under svg{width:100%;height:100%}
.receipts p{margin:0;color:var(--ink-2)}
@media (max-width:760px){.receipts{grid-template-columns:1fr}}

/* Beats (a real sequence, so numbered) */
.beats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;list-style:none;margin:0;padding:0;border:1px solid var(--rule);border-radius:var(--r-l);background:var(--card);overflow:hidden}
.beats li{padding:24px 22px 26px;position:relative}
.beats li + li{border-inline-start:1px solid var(--rule)}
.beats .n{font:700 .85rem var(--mono);color:var(--graphite)}
.beats h3{font-size:var(--step-2);margin:.35em 0 .3em;letter-spacing:-.02em}
.beats p{margin:0;color:var(--ink-2);font-size:.98rem}
.beats li:nth-child(3) h3{color:var(--red-ink)}
.beats li:nth-child(4) h3{color:var(--green)}
.beats .glyph{position:absolute;top:18px;right:18px;width:46px;height:30px;color:var(--rule)}
.beats li:nth-child(3) .glyph{color:var(--red)} .beats li:nth-child(4) .glyph{color:var(--green)}
@media (max-width:900px){.beats{grid-template-columns:1fr 1fr}.beats li:nth-child(3){border-inline-start:0}.beats li:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:540px){.beats{grid-template-columns:1fr}.beats li + li{border-inline-start:0;border-top:1px solid var(--rule)}}

/* Terms */
.terms{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.term{display:flex;flex-direction:column}
.term h3{font-size:1.05rem;margin:0 0 12px;display:flex;align-items:baseline;gap:10px}
.term h3 .tn{font:600 .8rem var(--mono);color:var(--graphite)}
.term ol{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.term a{display:flex;gap:10px;align-items:baseline;padding:10px 12px;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card);text-decoration:none;line-height:1.35;transition:border-color .15s}
.term a:hover{border-color:var(--ink);color:var(--ink)}
.term a .id{font:600 .78rem var(--mono);color:var(--graphite);flex:none}
.term a .st{margin-inline-start:auto;flex:none;width:9px;height:9px;border-radius:50%;border:1.5px solid var(--rule);align-self:center}
.term a .st.part{border-color:var(--amber);background:linear-gradient(90deg,var(--amber) 50%,transparent 50%)}
.term a .st.full{border-color:var(--green);background:var(--green)}
@media (max-width:1000px){.terms{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.terms{grid-template-columns:1fr}}

/* Certs */
.ladder{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;list-style:none;margin:0;padding:0;counter-reset:lv}
.ladder li{padding:22px;border-radius:var(--r-l);background:var(--card);border:1px solid var(--rule);position:relative}
.ladder li:nth-child(2){transform:translateY(-14px)} .ladder li:nth-child(3){transform:translateY(-28px);background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ladder li:nth-child(3) p{color:color-mix(in srgb,var(--paper) 75%,transparent)}
.ladder .lv{font:700 .85rem var(--mono);color:var(--red-ink)}
.ladder li:nth-child(3) .lv{color:var(--red)}
.ladder h3{margin:.3em 0 .25em;font-size:var(--step-1)}
.ladder p{margin:0;color:var(--ink-2)}
@media (max-width:760px){.ladder{grid-template-columns:1fr}.ladder li:nth-child(n){transform:none}}

/* Formats */
.formats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.formats article{padding:22px 20px 24px 0}
.formats article + article{padding-inline-start:20px;border-inline-start:1px solid var(--rule)}
.formats h3{margin:0;font-size:var(--step-1)}
.formats .len{font-size:.9rem;color:var(--red-ink);font-weight:600;margin:.2em 0 .7em}
.formats p{margin:0;color:var(--ink-2)}
@media (max-width:900px){.formats{grid-template-columns:1fr 1fr}.formats article:nth-child(3){border-inline-start:0;padding-inline-start:0}.formats article:nth-child(n+3){border-top:1px solid var(--rule)}}
@media (max-width:520px){.formats{grid-template-columns:1fr}.formats article + article{border-inline-start:0;padding-inline-start:0;border-top:1px solid var(--rule)}}

.split{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.kit{display:grid;gap:10px;list-style:none;margin:0;padding:0}
.kit a{display:flex;align-items:center;gap:14px;padding:14px 16px;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card);text-decoration:none}
.kit a:hover{border-color:var(--ink);color:var(--ink)}
.kit svg{width:22px;height:22px;flex:none;color:var(--red)}
.kit .t{font-weight:600;display:block}.kit .d{font-size:.9rem;color:var(--graphite);display:block}

.closing{text-align:left}
.closing h2{font-size:var(--step-4);font-weight:800;letter-spacing:-.04em;line-height:1;position:relative;display:inline-block;margin:.3em 0 .7em}
:lang(zh) .closing h2,:lang(ja) .closing h2{letter-spacing:0;line-height:1.25;font-size:var(--step-3)}
.closing h2 .ring{position:absolute;left:-5%;right:-5%;top:-48%;bottom:-46%;color:var(--red);pointer-events:none}
.closing h2 .ring svg{width:100%;height:100%}
.closing p{font-size:var(--step-1);color:var(--ink-2);max-width:40em;margin:0 0 1.4em}

/* Docs layout */
.doc-shell{display:grid;grid-template-columns:240px minmax(0,1fr) 220px;gap:clamp(24px,3vw,48px);padding:32px 0 96px}
.doc-shell.no-side{grid-template-columns:minmax(0,1fr) 220px}
.doc-shell.plain{grid-template-columns:minmax(0,1fr)}
@media (max-width:1180px){.doc-shell{grid-template-columns:minmax(0,1fr) 210px}.doc-shell .side{display:none}}
@media (max-width:900px){.doc-shell,.doc-shell.no-side{grid-template-columns:minmax(0,1fr)}.doc-shell .toc{display:none}}
.side,.toc{position:sticky;top:calc(var(--header) + 24px);align-self:start;max-height:calc(100vh - var(--header) - 48px);overflow:auto;font-size:.92rem;padding-bottom:16px}
.side h2,.toc h2{font-size:.82rem;font-weight:700;color:var(--graphite);margin:0 0 10px;letter-spacing:.01em}
.side ol{list-style:none;margin:0 0 18px;padding:0}
.side .tl{font:600 .78rem var(--mono);color:var(--graphite);margin:14px 0 6px;display:block}
.side a{display:flex;gap:8px;align-items:baseline;padding:6px 8px;border-radius:var(--r-s);text-decoration:none;color:var(--ink-2);line-height:1.3}
.side a:hover{background:var(--paper-2);color:var(--ink)}
.side a[aria-current="page"]{background:var(--card);color:var(--ink);box-shadow:inset 2px 0 0 var(--red);font-weight:600}
.side a .id{font:600 .74rem var(--mono);color:var(--graphite);flex:none;width:2.2em}
.toc ul{list-style:none;margin:0;padding:0;border-inline-start:1px solid var(--rule)}
.toc a{display:block;padding:5px 12px;margin-inline-start:-1px;border-inline-start:2px solid transparent;text-decoration:none;color:var(--graphite);line-height:1.35}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--ink);border-inline-start-color:var(--red)}
.toc .meter{margin:20px 0 0;padding:14px;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card)}
.meter .bar-o{height:6px;border-radius:99px;background:var(--paper-2);overflow:hidden;margin:8px 0 6px}
.meter .bar-i{height:100%;width:0;background:var(--green);border-radius:99px;transition:width .4s ease}
.meter .lbl{font-size:.82rem;color:var(--graphite)}
.meter strong{font-size:.92rem}

.crumbs{font-size:.88rem;color:var(--graphite);margin:0 0 14px;display:flex;flex-wrap:wrap;gap:6px}
.crumbs a{color:var(--graphite);text-decoration:none}.crumbs a:hover{color:var(--ink)}
.page-kicker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:.25em .65em;border-radius:999px;font-size:.82rem;font-weight:600;background:var(--paper-2);color:var(--ink-2)}
.chip.red{background:var(--red-wash);color:var(--red-ink)}

/* Prose */
.prose{max-width:72ch;font-size:var(--step-0)}
.prose h1{font-size:var(--step-3);line-height:1.1;letter-spacing:-.03em;margin:0 0 .5em;font-weight:800;text-wrap:balance}
:lang(zh) .prose h1,:lang(ja) .prose h1{letter-spacing:0;line-height:1.3}
.prose h2{font-size:var(--step-2);line-height:1.2;letter-spacing:-.02em;margin:2.2em 0 .6em;font-weight:750;padding-top:.2em}
.prose h3{font-size:var(--step-1);margin:1.8em 0 .5em;font-weight:700;letter-spacing:-.01em}
.prose h2+h3{margin-top:.8em}
.prose p,.prose ul,.prose ol,.prose blockquote,.prose .table-wrap,.prose pre{margin:0 0 1.1em}
.prose ul,.prose ol{padding-inline-start:1.3em}
.prose li{margin:.3em 0}
.prose li::marker{color:var(--graphite)}
.prose strong{font-weight:700;color:var(--ink)}
.prose code{font:500 .87em var(--mono);background:var(--paper-2);border:1px solid var(--rule);padding:.08em .35em;border-radius:5px;word-break:break-word}
.prose pre{position:relative;background:#16181D;color:#E6E7EA;border-radius:var(--r-m);padding:16px 18px;overflow:auto;font:400 .86rem/1.65 var(--mono);border:1px solid #2a2e36}
.prose pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit;word-break:normal}
.copy{position:absolute;top:8px;right:8px;font:600 .78rem var(--sans);padding:5px 9px;border-radius:6px;border:1px solid #3a3f49;background:#22252c;color:#cfd2d8;cursor:pointer;opacity:.85}
.copy:hover{opacity:1;color:#fff}
.prose blockquote{border-inline-start:3px solid var(--red);margin-inline:0;padding:.3em 0 .3em 1.1em;color:var(--ink-2);font-size:1.05em}
.prose blockquote p{margin:0}
.prose hr{border:0;border-top:1px solid var(--rule);margin:2.4em 0}
.prose a{color:var(--ink);text-decoration-color:color-mix(in srgb,var(--red) 70%,transparent);text-decoration-thickness:1.5px}
.prose a:hover{color:var(--red-ink)}
.table-wrap{overflow-x:auto;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card)}
.prose table{border-collapse:collapse;width:100%;font-size:.94rem;line-height:1.45}
.prose th,.prose td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--rule);vertical-align:top}
.prose th{font-weight:700;background:var(--paper-2);white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
.prose td:first-child{white-space:nowrap}
.tier{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:700;padding:.15em .55em;border-radius:999px;white-space:nowrap}
.tier::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.tier.now{color:var(--red-ink);background:var(--red-wash)}
.tier.growth{color:var(--amber);background:var(--amber-wash)}
.tier.scale{color:var(--blue);background:var(--blue-wash)}

/* Checklists */
.checklist{list-style:none!important;padding-inline-start:0!important;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card);overflow:hidden}
.checklist li{margin:0;border-bottom:1px solid var(--rule)}
.checklist li:last-child{border-bottom:0}
.check-row{display:flex;gap:12px;align-items:flex-start;padding:12px 14px}
.check-row input{appearance:none;flex:none;width:22px;height:22px;margin:1px 0 0;border:1.5px solid var(--graphite);border-radius:6px;background:var(--card);cursor:pointer;display:grid;place-content:center;transition:background .15s,border-color .15s}
.check-row input::after{content:"";width:12px;height:7px;border-left:2.5px solid #fff;border-bottom:2.5px solid #fff;transform:rotate(-45deg) translate(1px,-1px) scale(0);transition:transform .15s}
.check-row input:checked{background:var(--green);border-color:var(--green)}
.check-row input:checked::after{transform:rotate(-45deg) translate(1px,-1px) scale(1)}
.check-row label{flex:1;cursor:pointer}
.checklist li.done label{color:var(--graphite)}
.ev-btn{flex:none;font:600 .8rem var(--sans);color:var(--graphite);background:none;border:1px solid var(--rule);border-radius:999px;padding:3px 10px;cursor:pointer;white-space:nowrap}
.ev-btn:hover{color:var(--ink);border-color:var(--graphite)}
.ev-btn.has{color:var(--green);border-color:color-mix(in srgb,var(--green) 50%,var(--rule))}
.ev{display:none;padding:0 14px 12px 48px}
.ev.open{display:block}
.ev input{width:100%;font:inherit;font-size:.92rem;padding:8px 10px;border:1px solid var(--rule);border-radius:var(--r-s);background:var(--paper);color:var(--ink)}
.ev .st{font-size:.8rem;color:var(--graphite);margin-top:4px;min-height:1.2em}
.save-hint{font-size:.88rem;color:var(--graphite);margin:-.4em 0 1em;display:flex;gap:8px;align-items:baseline}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:56px;max-width:72ch}
.pager a{display:block;padding:16px 18px;border:1px solid var(--rule);border-radius:var(--r-m);text-decoration:none;background:var(--card)}
.pager a:hover{border-color:var(--ink);color:var(--ink)}
.pager .d{font-size:.84rem;color:var(--graphite);display:block}
.pager .t{font-weight:650}
.pager .next{text-align:right;grid-column:2}

/* Modules index */
.mod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-bottom:40px}
.mod-card{display:flex;flex-direction:column;gap:8px;padding:18px;border:1px solid var(--rule);border-radius:var(--r-l);background:var(--card);text-decoration:none;min-height:150px}
.mod-card:hover{border-color:var(--ink);color:var(--ink)}
.mod-card .id{font:600 .8rem var(--mono);color:var(--graphite);display:flex;justify-content:space-between}
.mod-card h3{margin:0;font-size:1.12rem;line-height:1.3}
.mod-card p{margin:0;color:var(--graphite);font-size:.92rem;line-height:1.45;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.mod-card .pbar{margin-top:auto;height:4px;border-radius:9px;background:var(--paper-2);overflow:hidden}
.mod-card .pbar i{display:block;height:100%;width:0;background:var(--green)}
.term-title{font-size:var(--step-1);margin:28px 0 14px;display:flex;gap:12px;align-items:baseline}
.term-title span{font:600 .85rem var(--mono);color:var(--graphite)}

/* Concepts filter */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:0 0 16px}
.seg{display:inline-flex;border:1px solid var(--rule);border-radius:999px;padding:3px;background:var(--card)}
.seg button{border:0;background:none;font:600 .88rem var(--sans);color:var(--ink-2);padding:6px 12px;border-radius:999px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.filters input[type=search]{flex:1;min-width:200px;height:40px;padding:0 12px;border:1px solid var(--rule);border-radius:var(--r-s);background:var(--card);color:var(--ink);font:inherit}
.filters .count{font-size:.88rem;color:var(--graphite)}

/* Forms */
.form{display:grid;gap:16px;max-width:620px}
.form .row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.form .row2{grid-template-columns:1fr}}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px}
.field .opt{font-weight:400;color:var(--graphite)}
.field input,.field select,.field textarea{width:100%;font:inherit;padding:11px 12px;border:1px solid var(--rule);border-radius:var(--r-s);background:var(--card);color:var(--ink);min-height:46px}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--focus);outline-offset:0;border-color:transparent}
.radio-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
@media (max-width:640px){.radio-cards{grid-template-columns:1fr 1fr}}
.radio-cards label{display:block;padding:12px;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card);cursor:pointer;font-weight:600;font-size:.95rem}
.radio-cards label span{display:block;font-weight:400;font-size:.82rem;color:var(--graphite)}
.radio-cards input{position:absolute;opacity:0;pointer-events:none}
.radio-cards input:checked + label{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.radio-cards input:focus-visible + label{outline:2px solid var(--focus);outline-offset:2px}
.status{padding:12px 14px;border-radius:var(--r-m);font-weight:500;display:none}
.status.show{display:block}
.status.ok{background:var(--green-wash);color:var(--green)}
.status.err{background:var(--red-wash);color:var(--red-ink)}
.fine{font-size:.86rem;color:var(--graphite)}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}

/* Account */
.acct{max-width:860px}
.acct-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:20px 0 32px}
@media (max-width:700px){.acct-cards{grid-template-columns:1fr}}
.acct-card{padding:18px;border:1px solid var(--rule);border-radius:var(--r-l);background:var(--card)}
.acct-card .lv{font:700 .8rem var(--mono);color:var(--red-ink)}
.acct-card h3{margin:.25em 0 .6em;font-size:1.05rem}
.acct-list{list-style:none;padding:0;margin:0;border:1px solid var(--rule);border-radius:var(--r-m);background:var(--card)}
.acct-list li{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--rule)}
.acct-list li:last-child{border-bottom:0}
.acct-list a{text-decoration:none;font-weight:600;flex:1}
.acct-list .n{font-size:.88rem;color:var(--graphite);white-space:nowrap}
.acct-list .pbar{width:120px;height:6px;border-radius:9px;background:var(--paper-2);overflow:hidden;flex:none}
.acct-list .pbar i{display:block;height:100%;background:var(--green)}
@media (max-width:560px){.acct-list .pbar{width:60px}}
.acct-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* Deck */
.deck-page{padding:28px 0 80px}
.deck{position:relative;background:var(--card);border:1px solid var(--rule);border-radius:var(--r-l);box-shadow:var(--shadow);aspect-ratio:16/9;overflow:hidden;container-type:inline-size}
.slide{position:absolute;inset:0;padding:6cqw 7cqw;display:none;flex-direction:column;justify-content:center;gap:2cqw;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:3cqw 3cqw}
.slide.on{display:flex}
.slide h1{font-size:6.2cqw;line-height:1.02;letter-spacing:-.035em;margin:0;font-weight:800;max-width:16ch}
.slide h2{font-size:4.2cqw;line-height:1.08;letter-spacing:-.025em;margin:0;font-weight:780;max-width:22ch}
:lang(zh) .slide h1,:lang(ja) .slide h1,:lang(zh) .slide h2,:lang(ja) .slide h2{letter-spacing:0;line-height:1.3;max-width:none}
.slide p,.slide li{font-size:2.15cqw;line-height:1.45;color:var(--ink-2);margin:0}
.slide ul,.slide ol{margin:0;padding-inline-start:1.2em;display:grid;gap:.9cqw}
.slide pre{font:500 2cqw/1.6 var(--mono);background:#16181D;color:#E6E7EA;padding:2cqw 2.4cqw;border-radius:1cqw;margin:0;max-width:60%}
.slide code{font-family:var(--mono)}
.slide strong{color:var(--ink)}
.slide.statement{background:var(--ink);color:var(--paper);background-image:none}
.slide.statement h2,.slide.cover h1{font-size:6.4cqw;max-width:18ch;color:inherit}
.slide.statement p{color:color-mix(in srgb,var(--paper) 70%,transparent);font-size:2.2cqw}
.slide.section h2{font-size:5.6cqw}
.slide.section p{font:400 3cqw var(--hand);color:var(--red-ink)}
.slide.break{align-items:flex-start}
.slide.lab h2::before{content:"";display:block;width:7cqw;height:4cqw;margin-bottom:1.6cqw;background:var(--red);-webkit-mask:url(/assets/marks/arrow-check.svg) no-repeat center/contain;mask:url(/assets/marks/arrow-check.svg) no-repeat center/contain}
.slide .brand{position:absolute;left:7cqw;bottom:4cqw;font:800 1.8cqw var(--sans);letter-spacing:-.04em;color:var(--graphite);display:flex;align-items:flex-end;gap:2px}
.slide.statement .brand{color:color-mix(in srgb,var(--paper) 55%,transparent)}
.slide .brand svg{width:1.8cqw;height:1.4cqw;color:var(--red)}
.slide .pg{position:absolute;right:7cqw;bottom:4cqw;font:500 1.4cqw var(--mono);color:var(--graphite)}
.slide.cover .ring{display:block;width:30cqw;height:2.4cqw;color:var(--red);margin:-.4cqw 0 1.2cqw;order:2}
.slide.cover p{order:3}
.deck-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:14px 0}
.deck-bar .help{font-size:.88rem;color:var(--graphite);margin-inline-start:auto}
.deck-notes{margin-top:12px;padding:16px 18px;border:1px dashed var(--rule);border-radius:var(--r-m);background:var(--card);display:none}
.deck-notes.open{display:block}
.deck-notes h2{font-size:.85rem;margin:0 0 6px;color:var(--graphite)}
.deck-notes p{margin:0}
.deck:fullscreen{border-radius:0;border:0;aspect-ratio:auto;width:100vw;height:100vh;display:grid;place-items:center;background:var(--paper)}
.deck:fullscreen .slide{inset:50% auto auto 50%;width:min(100vw,177.78vh);height:min(56.25vw,100vh);transform:translate(-50%,-50%)}

/* Footer */
.site-footer{border-top:1px solid var(--rule);padding:56px 0 40px;background:var(--paper-2);font-size:.94rem}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid > :first-child{grid-column:1/-1}}
.site-footer h2{font-size:.85rem;color:var(--graphite);margin:0 0 10px;font-weight:700}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.site-footer a{text-decoration:none;color:var(--ink-2)}
.site-footer a:hover{color:var(--ink)}
.site-footer .tag{font:400 1.25rem var(--hand);color:var(--red-ink);margin:10px 0 0}
.foot-base{margin-top:40px;padding-top:20px;border-top:1px solid var(--rule);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:var(--graphite);font-size:.86rem}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);opacity:0;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:999px;font-weight:600;font-size:.92rem;z-index:80;transition:all .2s;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%)}

.notfound{padding:clamp(64px,12vw,160px) 0}
.notfound h1{font-size:var(--step-4);letter-spacing:-.04em;margin:0 0 .3em;line-height:1}
.notfound p{font-size:var(--step-1);color:var(--ink-2);max-width:34em}

@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.side,.toc,.pager,.ev-btn{display:none!important}.doc-shell{display:block}body{background:#fff}}
.save-hint svg{width:16px;height:16px;flex:none;transform:translateY(3px)}

@media (max-width:600px){.review pre{white-space:pre;overflow-x:auto;font-size:.74rem}.anno{white-space:normal;min-width:max-content}}