/* G8 — blocks, squares, grids. No framework. */
:root{
  --bg:#F4EFE7; --paper:#FBF8F3; --ink:#121212; --muted:#55504A; --line:#DDD5C8;
  --accent:#E8541E; --accent-ink:#B23A0D; --radius:6px; --gap:clamp(16px,2.5vw,28px);
  --font:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --s1:#121212; --s2:#7A746C; --s3:var(--accent);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--font);
  background-image:linear-gradient(rgba(18,18,18,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(18,18,18,.035) 1px,transparent 1px);
  background-size:32px 32px}
img,svg{max-width:100%}
a{color:inherit;text-decoration-thickness:1.5px;text-underline-offset:3px}
a:hover{color:var(--accent-ink)}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:2px}
h1,h2,h3,h4{line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.3rem,6vw,4.4rem);font-weight:850}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem);font-weight:800}
h3{font-size:1.2rem;font-weight:750}
p{margin:0 0 1em}
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(18px,4vw,40px)}
.small{font-size:.86rem;color:var(--muted)}
.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;background:var(--ink);color:#fff;padding:10px 14px;border-radius:var(--radius);z-index:100;text-decoration:none}
.skip:focus{top:12px;color:#fff}
main:focus{outline:none}
.eyebrow{font:700 .78rem/1 var(--font);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:1rem}
.eyebrow a{text-decoration:none}.eyebrow a:hover{text-decoration:underline}
.lede{font-size:clamp(1.08rem,1.6vw,1.28rem);color:#2B2824;max-width:62ch}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;background:var(--ink);color:#fff;text-decoration:none;font-weight:700;
  padding:.85em 1.3em;border-radius:var(--radius);border:2px solid var(--ink);transition:transform .15s,box-shadow .15s;box-shadow:4px 4px 0 var(--accent)}
.btn:hover{color:#fff;transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--accent)}
.btn-ghost{background:transparent;color:var(--ink);box-shadow:4px 4px 0 var(--line)}
.btn-ghost:hover{color:var(--ink);box-shadow:6px 6px 0 var(--line)}
.btn-sm{padding:.5em .9em;font-size:.9rem;box-shadow:3px 3px 0 var(--accent)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(244,239,231,.94);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand-name{font-weight:900;font-size:1.35rem;letter-spacing:-.03em}
.site-nav{display:flex;align-items:center;gap:22px}
.site-nav>a:not(.btn){text-decoration:none;font-weight:600}
.site-nav>a[aria-current]{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:3px}
.areas-menu{position:relative}
.areas-menu summary{cursor:pointer;font-weight:600;list-style:none}
.areas-menu summary::-webkit-details-marker{display:none}
.areas-menu summary::after{content:"";display:inline-block;width:7px;height:7px;background:var(--accent);margin-left:8px;vertical-align:middle}
.areas-list{position:absolute;right:0;top:calc(100% + 14px);background:var(--paper);border:2px solid var(--ink);border-radius:var(--radius);
  list-style:none;margin:0;padding:8px;min-width:250px;box-shadow:6px 6px 0 var(--ink)}
.areas-list a{display:flex;align-items:center;gap:10px;padding:8px 10px;text-decoration:none;border-radius:4px;font-weight:600}
.areas-list a:hover,.areas-list a[aria-current]{background:var(--bg)}
.dot{display:inline-grid;place-items:center;width:24px;height:24px;flex:none;background:var(--c);color:#fff;font:800 .78rem/1 var(--font);border-radius:3px;margin-right:2px}
.menu-btn{display:none;font:700 .95rem var(--font);background:var(--ink);color:#fff;border:0;border-radius:var(--radius);padding:.55em .9em;cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:inline-block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--paper);border-bottom:2px solid var(--ink);flex-direction:column;align-items:stretch;padding:14px clamp(18px,4vw,40px) 20px;gap:12px}
  .site-nav.open{display:flex}
  .areas-menu[open] .areas-list,.areas-list{position:static;box-shadow:none;border:1px solid var(--line);margin-top:10px}
  .site-nav .btn{justify-content:center}
}

/* hero */
.hero{padding:clamp(48px,9vw,110px) 0 clamp(40px,7vw,90px)}
.hero-inner{display:grid;grid-template-columns:1.35fr 1fr;align-items:center;gap:var(--gap)}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-8{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(6px,1vw,10px);width:min(300px,70vw);justify-self:center}
.b8{aspect-ratio:1;background:var(--ink);border-radius:7px;box-shadow:inset 0 -6px 0 rgba(255,255,255,.06),0 6px 10px rgba(0,0,0,.12)}
.b8.empty{background:transparent;box-shadow:none}
.b8.accent{background:#9A958E;animation:place 1.4s cubic-bezier(.2,.8,.2,1) .4s both}
@keyframes place{0%{transform:translate(70%,-20%) rotate(8deg);background:#9A958E}70%{transform:none;background:#9A958E}100%{transform:none;background:var(--accent)}}
@media (max-width:760px){.hero-inner{grid-template-columns:1fr}.hero-8{width:min(132px,36vw);order:-1;justify-self:start}}

/* sections */
.section{padding:clamp(48px,7vw,90px) 0}
.section.alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 40px;margin-bottom:28px}
.section-head p{color:var(--muted);max-width:46ch;margin:0}

/* the 8 grid */
.grid8{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
@media (max-width:1000px){.grid8{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.grid8{grid-template-columns:1fr}}
.tile a{position:relative;display:flex;flex-direction:column;height:100%;min-height:250px;padding:22px;background:var(--paper);border:2px solid var(--ink);
  border-radius:var(--radius);text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s;box-shadow:5px 5px 0 var(--ink)}
.tile a:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--c);color:var(--ink)}
.tile-num{width:54px;height:54px;display:grid;place-items:center;background:var(--c);color:#fff;font:900 1.7rem/1 var(--font);border-radius:4px;margin-bottom:18px}
.tile-name{font-weight:800;font-size:1.3rem;letter-spacing:-.02em;margin-bottom:6px}
.tile-short{color:var(--muted);font-size:.95rem;flex:1}
.tile-go{margin-top:16px;font-weight:700;font-size:.9rem}

/* theory-method-action */
.sq{display:inline-block;width:14px;height:14px;border-radius:2px;margin-right:9px;vertical-align:-1px}
.sq1{background:var(--s1)}.sq2{background:var(--s2)}.sq3{background:var(--s3)}
.tma-row{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);counter-reset:s}
.tma-row li{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative}
.tma-row li:not(:last-child)::after{content:"→";position:absolute;right:-22px;top:50%;transform:translateY(-50%);font-weight:800;color:var(--muted)}
.tma-row .sq{width:36px;height:36px;margin-bottom:14px;display:block}
@media (max-width:760px){.tma-row{grid-template-columns:1fr}.tma-row li::after{display:none}}

/* rules + for */
.two-col{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(30px,6vw,80px)}
@media (max-width:860px){.two-col{grid-template-columns:1fr}}
.rules{list-style:none;padding:0;margin:0;display:grid;gap:18px}
.rules li{display:flex;gap:16px}
.rule-sq{flex:none;width:22px;height:22px;background:var(--ink);border-radius:3px;margin-top:3px;box-shadow:4px 4px 0 var(--accent)}
.rules h3{margin-bottom:.2em}.rules p{margin:0;color:var(--muted)}
.for-cards{display:grid;gap:16px;margin-bottom:16px}
.for-card{background:var(--paper);border:2px solid var(--ink);border-radius:var(--radius);padding:22px;box-shadow:5px 5px 0 var(--line)}
.for-card p{margin:0;color:var(--muted)}

/* starters */
.starters{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
@media (max-width:860px){.starters{grid-template-columns:1fr}}
.starters a{display:block;height:100%;padding:22px;background:var(--bg);border-left:8px solid var(--c);border-radius:var(--radius);text-decoration:none}
.starters a:hover h3{text-decoration:underline}
.starters p{margin:0;color:var(--muted)}
.tag{display:inline-block;font:700 .72rem/1 var(--font);text-transform:uppercase;letter-spacing:.1em;padding:6px 8px;border:1.5px solid currentColor;border-radius:3px;margin-bottom:12px}

/* x cta */
.x-cta{margin:clamp(40px,6vw,80px) 0}
.x-cta-inner{display:flex;align-items:center;gap:24px;flex-wrap:wrap;background:var(--ink);color:#fff;border-radius:calc(var(--radius) + 2px);padding:clamp(22px,4vw,40px)}
.x-cta-inner>div:nth-child(2){flex:1;min-width:220px}
.x-cta h2{margin:0 0 .25em;font-size:clamp(1.4rem,2.6vw,1.9rem)}
.x-cta p{margin:0;color:#D7D2CA}
.x-cta .btn{background:#fff;color:var(--ink);border-color:#fff}
.x-cta .btn:hover{color:var(--ink)}
.x-cta-blocks{display:grid;grid-template-columns:repeat(2,18px);gap:5px}
.x-cta-blocks span{width:18px;height:18px;background:#fff;border-radius:2px}
.x-cta-blocks span:nth-child(4){background:var(--accent)}

/* area pages */
.area-hero{padding:clamp(40px,7vw,80px) 0 clamp(28px,4vw,46px);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,color-mix(in srgb,var(--c) 10%,transparent),transparent 70%)}
.area-hero-inner{display:grid;grid-template-columns:auto 1fr;gap:clamp(20px,4vw,44px);align-items:start}
.area-num{width:clamp(80px,12vw,140px);aspect-ratio:1;display:grid;place-items:center;background:var(--c);color:#fff;font:900 clamp(3rem,8vw,5.6rem)/1 var(--font);
  border-radius:8px;box-shadow:8px 8px 0 var(--ink)}
@media (max-width:620px){.area-hero-inner{grid-template-columns:1fr}}
.area-body{display:grid;grid-template-columns:260px 1fr;gap:clamp(24px,4vw,56px);padding-top:clamp(28px,4vw,48px)}
@media (max-width:900px){.area-body{grid-template-columns:1fr}}
.toc{position:sticky;top:90px;align-self:start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
@media (max-width:900px){.toc{position:static}}
.toc-h{font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.toc ol{margin:0 0 12px;padding-left:1.2em}.toc li{margin:6px 0}.toc li::marker{color:var(--c);font-weight:800}
.toc a{text-decoration:none;font-weight:600}.toc a:hover{text-decoration:underline}
.guides{min-width:0}
.guide{background:var(--paper);border:2px solid var(--ink);border-radius:var(--radius);padding:clamp(20px,3vw,34px);margin-bottom:var(--gap);box-shadow:6px 6px 0 var(--c);scroll-margin-top:90px}
.guide-top{display:flex;justify-content:space-between;align-items:center}
.guide-n{font:800 .85rem var(--mono);color:var(--muted)}
.guide h3{font-size:clamp(1.35rem,2.4vw,1.75rem);margin-bottom:.8em}
.tma{display:grid;gap:20px}
.step h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:.6em}
.step p,.step ol{margin:0}
.step ol{padding-left:1.3em}.step ol li{margin:.35em 0}.step ol li::marker{font-weight:800;color:var(--c)}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.checks label{display:flex;gap:12px;align-items:flex-start;cursor:pointer;background:var(--bg);border:1px dashed var(--line);padding:10px 12px;border-radius:4px}
.checks input{appearance:none;flex:none;width:20px;height:20px;border:2px solid var(--ink);border-radius:3px;margin-top:3px;cursor:pointer;background:#fff}
.checks input:checked{background:var(--accent);border-color:var(--accent);box-shadow:inset 0 0 0 3px #fff}
.checks input:checked+span{text-decoration:line-through;color:var(--muted)}
.sources{margin-top:22px;border-top:1px solid var(--line);padding-top:14px}
.sources summary{cursor:pointer;font-weight:700;font-size:.92rem}
.sources ul{margin:10px 0 0;padding-left:1.1em;font-size:.93rem}.sources li{margin:6px 0}
.disclaimer{background:#FFF7E8;border:1.5px solid #E5C98A;border-radius:var(--radius);padding:14px 18px;margin-bottom:var(--gap);font-size:.95rem}
.disclaimer.strong{background:#FFF0E8;border-color:var(--accent);border-left-width:8px}
.prompt{margin-top:14px;border:1.5px solid var(--ink);border-radius:var(--radius);overflow:hidden}
.prompt-head{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;padding:6px 12px;font:700 .78rem var(--font);text-transform:uppercase;letter-spacing:.1em}
.copy{font:700 .8rem var(--font);background:#fff;color:var(--ink);border:0;border-radius:3px;padding:4px 10px;cursor:pointer}
.prompt pre{margin:0;padding:14px;white-space:pre-wrap;font:500 .92rem/1.55 var(--mono);background:#fff}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap);margin-top:10px}
.pager-a{display:flex;flex-direction:column;gap:2px;padding:16px 18px;border:2px solid var(--ink);border-radius:var(--radius);text-decoration:none;font-weight:800;background:var(--paper)}
.pager-a.next{text-align:right}
.pager-a:hover{box-shadow:4px 4px 0 var(--ink)}

/* calculator */
.calc{margin-top:16px;padding:18px;border:1.5px solid var(--ink);border-radius:var(--radius);background:#fff}
.calc-h{font-size:1rem;margin-bottom:12px;text-transform:none;letter-spacing:0}
.calc-inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}
@media (max-width:620px){.calc-inputs{grid-template-columns:1fr}}
.calc label,.tracker-name{display:flex;flex-direction:column;font-size:.85rem;font-weight:600;gap:4px}
.calc input,.tracker-name input{font:600 1rem var(--font);padding:8px 10px;border:1.5px solid var(--ink);border-radius:4px;background:var(--bg);width:100%}
.calc-row{display:grid;grid-template-columns:70px 1fr;gap:10px;align-items:center;margin:10px 0}
.calc-row b{font-size:.9rem}
.calc-blocks{display:flex;flex-wrap:wrap;gap:3px}
.calc-blocks i{width:12px;height:12px;background:var(--ink);border-radius:2px}
.calc-blocks i.new{background:var(--accent)}
.calc-val{font:800 1rem var(--mono);margin-left:6px}

/* tracker */
.tracker{margin-top:16px;padding:18px;border:1.5px solid var(--ink);border-radius:var(--radius);background:#fff}
.tracker-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.tracker-head h4{margin:0;font-size:1rem}
.tracker-grid{display:grid;grid-template-columns:repeat(11,1fr);gap:4px;margin:14px 0}
.tracker-grid button{aspect-ratio:1;border:1.5px solid var(--ink);background:var(--bg);border-radius:3px;font:700 .68rem var(--font);cursor:pointer;padding:0;color:var(--ink)}
.tracker-grid button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}

/* prose pages */
.prose-wrap{padding:clamp(40px,7vw,80px) clamp(18px,4vw,40px) 0}
.prose{max-width:760px}
.prose h2{margin-top:1.6em;font-size:1.5rem;display:flex;align-items:center;gap:10px}
.prose ul,.prose ol{padding-left:1.2em}.prose li{margin:.4em 0}
.about-list{list-style:none;padding:0!important}.about-list li{display:flex;gap:10px;align-items:baseline}
.src-list li{margin:.6em 0}
.crisis{background:var(--ink);color:#fff;padding:16px 18px;border-radius:var(--radius);margin:12px 0 20px}
.crisis a{color:#fff}

/* 404 */
.nf{display:grid;grid-template-columns:auto 1fr;gap:clamp(24px,6vw,70px);align-items:center;padding:clamp(50px,9vw,110px) clamp(18px,4vw,40px)}
.nf-8{color:var(--ink)}
.nf-list{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,240px));gap:8px}
.nf-list a{display:flex;align-items:center;gap:8px;text-decoration:none;font-weight:600}
@media (max-width:620px){.nf{grid-template-columns:1fr}}

/* footer */
.site-footer{border-top:2px solid var(--ink);background:var(--paper);padding:44px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1.6fr 1fr;gap:30px}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr}}
.footer-tag{font-weight:800;font-size:1.1rem;margin:12px 0 4px}
.footer-h{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.footer-list.cols{grid-template-columns:1fr 1fr}
.footer-list a{text-decoration:none}.footer-list a:hover{text-decoration:underline}
.footer-legal{margin-top:30px;padding-top:18px;border-top:1px solid var(--line)}
@media print{.site-header,.x-cta,.toc,.pager,.site-footer{display:none}.guide{box-shadow:none;break-inside:avoid}}
.calc-row>div{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px}

/* language switch (EN / 中文) — always visible, including on mobile */
.header-right{display:flex;align-items:center;gap:12px;order:2}
.site-nav{order:1;margin-left:auto}
.lang-switch{display:inline-flex;align-items:center;gap:2px;border:2px solid var(--ink);border-radius:var(--radius);padding:2px;font:700 .85rem/1 var(--font);background:var(--paper)}
.lang-switch a,.lang-cur{padding:6px 9px;border-radius:3px;text-decoration:none;color:var(--ink)}
.lang-switch a:hover{background:var(--bg);color:var(--ink)}
.lang-cur{background:var(--ink);color:#fff}
.lang-sep{color:var(--muted);padding:0 1px}
@media (max-width:860px){.site-nav{margin-left:0}.brand{margin-right:auto}}

/* Simplified Chinese typography */
:lang(zh-Hans){font-family:"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",var(--font)}
html:lang(zh-Hans) body{line-height:1.75}
html:lang(zh-Hans) h1,html:lang(zh-Hans) h2,html:lang(zh-Hans) h3,html:lang(zh-Hans) h4{letter-spacing:0;line-height:1.3}
html:lang(zh-Hans) h1{font-weight:800}
html:lang(zh-Hans) .eyebrow,html:lang(zh-Hans) .step h4,html:lang(zh-Hans) .toc-h,html:lang(zh-Hans) .footer-h,html:lang(zh-Hans) .tag{letter-spacing:.06em}
html:lang(zh-Hans) .lede{max-width:40em}
[lang="en"]{font-family:var(--font)}

/* area order groups + anchor methods */
.order-line{margin:-12px 0 24px;font-weight:600;color:#2B2824}
.tile-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.tile-group{font:700 .72rem/1 var(--font);text-transform:uppercase;letter-spacing:.1em;color:var(--muted);border:1.5px solid var(--line);border-radius:3px;padding:5px 7px}
.anchor{margin-top:22px;background:var(--paper);border:2px solid var(--ink);border-left:10px solid var(--c);border-radius:var(--radius);padding:16px 20px;max-width:62ch;box-shadow:5px 5px 0 var(--ink)}
.anchor p{margin:0}
.anchor-k{font:700 .75rem/1 var(--font);text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin-bottom:8px!important}
.anchor-name{font-weight:800;font-size:1.25rem;line-height:1.25;margin-bottom:4px!important}
.anchor-text{color:#2B2824}
.anchor-links{margin-top:10px!important;display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-weight:700}
.anchor-tbd{margin-top:18px;color:var(--muted);font-weight:600;border:1.5px dashed var(--line);border-radius:var(--radius);padding:10px 14px;display:inline-block}
.guide-anchor{border-width:3px}
.guide-note{margin:14px 0 0;background:#FFF0E8;border-left:6px solid var(--accent);padding:10px 14px;border-radius:4px;font-size:.95rem}
html:lang(zh-Hans) .tile-group,html:lang(zh-Hans) .anchor-k{letter-spacing:.06em}