/* Public site. Tokens and fonts come from /theme.css (shared with the Studio). */
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.65 var(--font-ui);font-synthesis:none;text-rendering:optimizeLegibility}
a{color:var(--accent-ink);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--accent)}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:6px}
img{max-width:100%}
.wrap{max-width:1160px;margin:0 auto;padding:0 clamp(18px,4vw,40px)}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 12px;border-radius:var(--r-sm);z-index:20}
.skip:focus{left:12px}

/* Type */
h1,h2,.display{font-family:var(--font-display);font-weight:600;color:var(--ink);text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(2.35rem,1.35rem + 3.6vw,4rem);line-height:1.12;margin:.5rem 0 1.25rem}
h2{font-size:clamp(1.75rem,1.25rem + 1.7vw,2.5rem);line-height:1.2;margin:0 0 .9rem}
h3{font:600 1.125rem/1.4 var(--font-ui);margin:0 0 .4rem;color:var(--ink)}
p{margin:0 0 1rem;text-wrap:pretty}
.eyebrow{font:600 .8125rem/1.4 var(--font-ui);letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink);margin:0}
.lead{font-size:clamp(1.0625rem,1rem + .3vw,1.1875rem);color:var(--ink-2);max-width:38em}
.muted{color:var(--muted)}
.small-print,.field-help{font-size:.875rem;color:var(--muted)}
.section-intro{max-width:44em;color:var(--ink-2);margin-bottom:2rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:44px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);border-radius:var(--r-md);padding:.65rem 1.1rem;font:600 .9375rem/1.2 var(--font-ui);text-decoration:none;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.btn:hover{border-color:var(--ink-2);color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-ink);border-color:var(--accent-ink);color:#fff}
.btn.large{min-height:52px;padding:.85rem 1.4rem;font-size:1rem}
.btn.small{min-height:38px;padding:.45rem .9rem;font-size:.875rem}
.btn.disabled,.btn[aria-disabled=true]{opacity:.55;cursor:default;pointer-events:none}
.ext::after{content:"";width:.7em;height:.7em;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M4 2h6v6M10 2 2 10' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M4 2h6v6M10 2 2 10' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center/contain no-repeat}
.go::after{content:"";width:.9em;height:.9em;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M1 7h11M8 3l4 4-4 4' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M1 7h11M8 3l4 4-4 4' fill='none' stroke='black' stroke-width='1.6'/%3E%3C/svg%3E") center/contain no-repeat}

/* Header */
.site-head{position:sticky;top:0;z-index:10;background:rgba(248,246,241,.92);backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:1.5rem;min-height:68px}
.logo{display:flex;align-items:center;gap:.6rem;white-space:nowrap;color:var(--ink);text-decoration:none;font:500 .9375rem/1.2 var(--font-ui);margin-right:auto}
.logo b{font-weight:700}
.logo-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--ink);color:var(--paper);font:600 26px/1 var(--font-display);padding-bottom:3px}
.primary-nav{display:flex;gap:1.4rem;align-items:center}
.head-row .btn{white-space:nowrap}
.primary-nav a{color:var(--ink-2);text-decoration:none;font-size:.9375rem;padding:.4rem 0;white-space:nowrap}
.primary-nav a:hover,.primary-nav a[aria-current=page]{color:var(--accent-ink)}

/* Sections */
section{padding:clamp(56px,7vw,96px) 0}
.band{background:var(--surface);border-block:1px solid var(--line)}
.hero{padding-top:clamp(40px,6vw,88px);padding-bottom:clamp(48px,6vw,80px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);gap:clamp(32px,5vw,72px);align-items:center}
.hero h1{max-width:12.5em}
.cta{display:flex;gap:.75rem;flex-wrap:wrap;margin:1.75rem 0 1rem}
.facts{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;padding:0;margin:0;list-style:none;font-size:.875rem;color:var(--muted)}
.facts li{display:flex;align-items:center;gap:.45rem}
.facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok)}

/* Hero specimen: real engine output */
.specimen-card{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:clamp(20px,3vw,32px)}
.spec-head{display:flex;justify-content:space-between;gap:1rem;font-size:.8125rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:.75rem;margin-bottom:1.25rem}
.spec-head b{color:var(--ink);font-weight:600}
.parts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) 28px minmax(0,1.6fr);align-items:end;gap:.6rem}
.part{text-align:center}
.part .g{display:grid;place-items:end center;height:112px;font:88px/1.1 'Rakkas Original',var(--font-display);color:var(--ink);background:var(--sunken);border-radius:var(--r-md)}
.part .g.m{color:var(--mark)}
.part small,.result small{display:block;font-size:.75rem;color:var(--muted);margin-top:.45rem;line-height:1.3;min-height:2.6em}
.arrow{align-self:center;color:var(--faint);padding-bottom:1.6rem}
.arrow::after{content:"";display:block;width:22px;height:22px;background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M1 7h11M8 3l4 4-4 4' fill='none' stroke='black' stroke-width='1.4'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M1 7h11M8 3l4 4-4 4' fill='none' stroke='black' stroke-width='1.4'/%3E%3C/svg%3E") center/contain no-repeat}
.result{text-align:center}
.result .g{display:grid;place-items:end center;height:160px;font:150px/1 'Rakkas VFE Demo',var(--font-display);color:var(--accent);border:1px dashed var(--accent-line);border-radius:var(--r-md);background:linear-gradient(var(--accent-soft),var(--accent-soft)) 0 78%/100% 1px no-repeat}
.spec-word{font:clamp(30px,3.4vw,44px)/1.3 'Rakkas VFE Demo',var(--font-display);margin:1.4rem 0 .25rem;color:var(--ink)}
.spec-note{font-size:.8125rem;color:var(--muted);margin:0}

/* Showcase */
.showcase{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,460px),1fr));gap:1.25rem;margin:0 0 1.25rem}
.sc-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.25rem;display:flex;flex-direction:column;gap:.75rem}
.sc-card header{display:flex;justify-content:space-between;align-items:baseline;gap:.75rem;flex-wrap:wrap;font-size:.9375rem}
.sc-card header span{color:var(--muted);font-size:.875rem}
.sc-row{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.9rem 1rem}
.sc-row small{display:flex;justify-content:space-between;gap:.5rem;color:var(--muted);font-size:.8125rem;margin-bottom:.35rem}
.sc-text{font-size:clamp(26px,2.6vw,34px);line-height:1.4;white-space:pre-line;overflow-wrap:anywhere;color:var(--ink)}
.sc-text .borrowed{color:var(--mark);background:var(--mark-soft);border-radius:3px}
.sc-meta{font-size:.875rem;color:var(--muted);margin:0;display:flex;gap:.4rem;align-items:center}
.sc-meta .pill{background:var(--ok-soft);color:var(--ok);font-weight:600;border-radius:99px;padding:.1rem .55rem;font-size:.8125rem}
.legend{display:flex;gap:.5rem;align-items:center;font-size:.875rem;color:var(--muted)}
.legend i{display:inline-block;width:14px;height:14px;border-radius:3px;background:var(--mark-soft);border:1px solid var(--mark)}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;padding:0;margin:0;list-style:none;counter-reset:s;border-top:1px solid var(--line-2)}
.steps li{counter-increment:s;padding:1.25rem 1.25rem 0 0}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;font:600 1.75rem/1 var(--font-display);color:var(--accent);margin-bottom:.9rem}
.steps b{display:block;font-size:1.0625rem;margin-bottom:.35rem}
.steps span{color:var(--muted);font-size:.9375rem;display:block}

/* Trust */
.trust{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,64px);align-items:start}
.gate{list-style:none;margin:0;padding:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.gate li{display:grid;grid-template-columns:28px 1fr;gap:.5rem;padding:.85rem 1.1rem;border-top:1px solid var(--line)}
.gate li:first-child{border-top:0}
.gate li::before{content:"";width:18px;height:18px;margin-top:3px;border-radius:50%;background:var(--ok-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5 9.5l2.5 2.5L13 6.5' fill='none' stroke='%231f7a55' stroke-width='2'/%3E%3C/svg%3E") center/18px no-repeat}
.gate b{display:block;font-weight:600}
.gate span{color:var(--muted);font-size:.9375rem}

/* Grids and cards */
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.grid3 article{background:var(--surface);padding:1.5rem}
.grid3 p{color:var(--muted);font-size:.9375rem;margin:0}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,48px);align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(20px,2.5vw,28px)}
.card.accent{border-color:var(--accent-line);background:linear-gradient(180deg,var(--accent-soft),var(--surface) 70%)}
.card h3{font:600 1.375rem/1.3 var(--font-display)}
.tag{display:inline-block;font:600 .75rem/1.4 var(--font-ui);letter-spacing:.04em;color:var(--accent-ink);background:var(--accent-soft);border-radius:99px;padding:.15rem .6rem;margin-bottom:.6rem}
ul.checks,ul.limits{padding:0;margin:0;list-style:none}
ul.checks li,ul.limits li{padding-left:1.75rem;position:relative;margin:.55rem 0;color:var(--ink-2)}
ul.checks li::before,ul.limits li::before{content:"";position:absolute;left:0;top:.3em;width:1.05rem;height:1.05rem;border-radius:50%}
ul.checks li::before{background:var(--ok-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5 9.5l2.5 2.5L13 6.5' fill='none' stroke='%231f7a55' stroke-width='2'/%3E%3C/svg%3E") center/100% no-repeat}
ul.limits li::before{background:var(--warn-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M5.5 9h7' stroke='%239a5b00' stroke-width='2'/%3E%3C/svg%3E") center/100% no-repeat}
.list-title{font:600 .8125rem/1.4 var(--font-ui);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 .5rem}

/* FAQ */
.faq{max-width:820px}
details{border-top:1px solid var(--line-2)}
details:last-of-type{border-bottom:1px solid var(--line-2)}
details summary{cursor:pointer;font-weight:600;font-size:1.0625rem;padding:1.05rem 2rem 1.05rem 0;list-style:none;position:relative}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"";position:absolute;right:.25rem;top:50%;width:10px;height:10px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:transform .15s}
details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
details p{color:var(--ink-2);margin:0 0 1.1rem;max-width:44em}

/* Misc */
.notice{background:var(--warn-soft);border:1px solid #ecd9a6;border-radius:var(--r-md);padding:.85rem 1rem;color:#5c3d00;font-size:.9375rem}
.page-narrow{max-width:800px;margin:0 auto;padding:clamp(40px,6vw,72px) clamp(18px,4vw,40px) 72px}
.page-narrow h2{margin-top:2.6rem;font-size:clamp(1.5rem,1.2rem + 1vw,1.875rem)}
.page-narrow ul:not(.checks):not(.limits){padding-left:1.2rem}
.page-narrow li{margin:.35rem 0}
.account{font:500 1rem/1.6 var(--font-ui);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.85rem 1rem;user-select:all}
textarea{width:100%;font:.875rem/1.6 ui-monospace,Consolas,'Cascadia Mono',monospace;border:1px solid var(--line-2);border-radius:var(--r-md);padding:.9rem;background:var(--surface);color:var(--ink)}
label.field{display:block;font-weight:600;font-size:.9375rem;margin:1rem 0 .35rem}
select,input[type=text]{font:inherit;width:100%;min-height:44px;border:1px solid var(--line-2);border-radius:var(--r-md);padding:.5rem .75rem;background:var(--surface);color:var(--ink)}
.sponsor{display:inline-block;margin:6px 12px 6px 0}
.ad-slot{border:1px dashed var(--line-2);border-radius:var(--r-md);padding:.75rem;margin:0 auto;max-width:970px}
.ad-slot::before{content:"Quảng cáo";display:block;font-size:.75rem;color:var(--faint);margin-bottom:.4rem}
.site-foot{border-top:1px solid var(--line);padding:2.5rem 0 3rem;font-size:.875rem;color:var(--muted)}
.foot-grid{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem 2rem}
.foot-links{display:flex;flex-wrap:wrap;gap:.4rem 1.25rem}
.foot-links a{color:var(--ink-2)}

@media (max-width:1000px){
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:1.5rem}
  .grid3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
  .hero-grid,.two,.trust{grid-template-columns:1fr}
  .specimen-card{max-width:520px}
}
@media (max-width:900px){
  .head-row{flex-wrap:wrap;gap:.25rem .75rem;padding-top:.6rem}
  .primary-nav{order:3;width:100%;overflow-x:auto;gap:1.1rem;padding-bottom:.35rem;scrollbar-width:none;margin:0 calc(-1*clamp(18px,4vw,40px));padding-inline:clamp(18px,4vw,40px)}
  .primary-nav::-webkit-scrollbar{display:none}
  .head-row .btn.small{min-height:36px}
}
@media (max-width:760px){
  .steps{grid-template-columns:1fr;border-top:0}
  .steps li{display:grid;grid-template-columns:3rem 1fr;padding:1rem 0;border-top:1px solid var(--line)}
  .steps li::before{grid-row:span 2;margin:0}
  .grid3{grid-template-columns:1fr}
  .parts{grid-template-columns:repeat(3,1fr);row-gap:1rem}
  .arrow{display:none}
  .result{grid-column:1/-1}
  .part .g{height:96px;font-size:76px}
  .result .g{height:150px;font-size:140px}
  .cta .btn{flex:1 1 auto}
}
@media (max-width:420px){
  .logo{font-size:.8125rem;gap:.45rem}
  .logo-mark{width:32px;height:32px;font-size:22px;border-radius:8px}
  .head-row .btn.small{padding:.4rem .7rem}
  .primary-nav{-webkit-mask:linear-gradient(90deg,#000 85%,transparent);mask:linear-gradient(90deg,#000 85%,transparent)}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Demo fonts (SIL OFL): the original Rakkas and the Vietnamese version built by the Studio engine. */
@font-face{font-family:'Rakkas Original';src:url(/showcase/rakkas-original.woff2) format('woff2');font-display:swap}
@font-face{font-family:'Rakkas VFE Demo';src:url(/showcase/rakkas-vn.woff2) format('woff2');font-display:swap}

/* Support page */
.donate-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(20px,3vw,36px);overflow:hidden}
.donate-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--accent),var(--mark))}
.donate-grid{display:flex;flex-wrap:wrap;gap:clamp(1.25rem,4vw,3rem);align-items:center}
.donate-qr-wrap{margin:0;flex:0 0 auto;text-align:center;font-size:.8125rem;color:var(--muted)}
.donate-qr{display:block;width:clamp(200px,28vw,260px);height:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:10px;box-shadow:var(--shadow-2)}
.donate-qr-wrap figcaption{margin-top:.6rem}
.donate-info{flex:1 1 280px;min-width:0}
.donate-info h3{font:600 clamp(1.35rem,2.4vw,1.75rem)/1.25 var(--font-display);margin:.35rem 0 .9rem}
.donate-steps{margin:0 0 1.2rem;padding-left:1.25rem;color:var(--ink-2)}
.donate-steps li{margin:.35rem 0;padding-left:.2rem}
.donate-steps li::marker{color:var(--accent);font-weight:700}
.ref-code{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .75rem;margin:0 0 1rem;padding:.7rem .9rem;border:1px dashed var(--accent-line);border-radius:var(--r-md);background:var(--surface)}
.ref-code span{font-size:.8125rem;color:var(--muted)}
.ref-code code{font:700 1.05rem/1 ui-monospace,Consolas,'Cascadia Mono',monospace;letter-spacing:.06em;color:var(--accent-ink)}
.ref-code .btn{margin-left:auto}
.kv{display:grid;grid-template-columns:8.5rem 1fr auto;gap:.75rem;align-items:center;padding:.6rem 0;border-bottom:1px solid var(--line)}
.kv span{color:var(--muted);font-size:.875rem}
.kv b{font-weight:600;overflow-wrap:anywhere}
.card .notice{margin:0}
@media (max-width:520px){.kv{grid-template-columns:1fr auto}.kv span{grid-column:1/-1}}

/* Feedback Center */
.feedback-page{padding-top:clamp(32px,5vw,64px);padding-bottom:72px}
.fb-hero{max-width:46em;margin-bottom:clamp(24px,3vw,36px)}
.fb-hero h1{margin-bottom:.9rem}
.fb-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(280px,.85fr);gap:clamp(20px,3vw,40px);align-items:start}
.fb-form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-1);padding:clamp(16px,2.5vw,28px);min-width:0}
.fb-form-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem;border-bottom:1px solid var(--line);padding-bottom:.9rem;margin-bottom:1rem}
.fb-form-head h2{font-size:clamp(1.35rem,1.1rem + .8vw,1.75rem);margin:0}
.fb-frame{position:relative;min-height:240px}
.fb-frame iframe{display:block;width:100%;border:0;min-height:420px;background:transparent}
.fb-loading{display:flex;align-items:center;gap:.6rem;color:var(--muted);font-size:.9375rem;padding:1rem 0;position:absolute;inset:0 auto auto 0}
.fb-loading[hidden]{display:none}
.spinner{width:18px;height:18px;border:2px solid var(--line-2);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.fb-failed{position:relative;z-index:1;margin:.5rem 0}
.fb-failed .cta{margin:.75rem 0 0}
.fb-processor{border-top:1px solid var(--line);padding-top:.9rem;margin:1rem 0 0}
.fb-notes{margin:.75rem 0 0;padding-left:1.2rem;font-size:.875rem;color:var(--muted)}
.fb-side{display:grid;gap:1rem;min-width:0}
.fb-side .card{padding:1.15rem 1.25rem}
.fb-side .card h3{font:600 1.125rem/1.35 var(--font-display);margin-bottom:.35rem}
.fb-topics{display:flex;flex-wrap:wrap;gap:.4rem;margin:.75rem 0}
.chip-btn{font:500 .875rem/1.2 var(--font-ui);min-height:38px;padding:.45rem .8rem;border:1px solid var(--line-2);border-radius:99px;background:var(--surface);color:var(--ink-2);cursor:pointer}
.chip-btn:hover{border-color:var(--ink-2)}
.chip-btn[aria-checked=true]{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent-ink);font-weight:600}
.fb-tip{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:.85rem 1rem}
.fb-tip .fb-option{font-size:.9375rem;margin:0 0 .6rem}
.fb-tip .list-title{margin-top:.25rem}
.fb-tip ul.checks li{font-size:.9375rem;margin:.35rem 0}
.fb-tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:0 1.25rem}
.fb-tool summary{font-size:1rem}
.fb-tool .report-form{padding-bottom:1rem}
.fb-tool textarea{font-size:.8125rem}
.fb-diag{background:var(--surface);border:1px solid var(--accent-line);border-left:4px solid var(--accent);border-radius:var(--r-lg);padding:clamp(16px,2.5vw,24px);margin:0 0 clamp(20px,3vw,32px)}
.fb-diag[hidden]{display:none}
.fb-diag-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:.75rem}
.fb-diag-head h2{font-size:clamp(1.25rem,1.1rem + .6vw,1.5rem);margin:.25rem 0 .5rem}
.fb-diag-text{white-space:pre-wrap;overflow-wrap:anywhere;font:.8125rem/1.6 ui-monospace,Consolas,'Cascadia Mono',monospace;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);padding:.85rem 1rem;margin:.5rem 0 0;max-height:320px;overflow:auto}
.fb-diag .cta{margin:.75rem 0 0}
.btn.subtle{background:transparent;border-color:transparent;color:var(--muted)}
.btn.subtle:hover{color:var(--ink);border-color:var(--line-2)}
@media (max-width:1000px){.fb-grid{grid-template-columns:1fr}}
@media (max-width:560px){.fb-form-card{padding:14px;border-radius:var(--r-md)}.fb-form-head .btn{width:100%}}

/* Consent bar and choices (also in studio/public.css) */
.consent-bar{position:fixed;left:16px;bottom:16px;z-index:40;max-width:min(460px,calc(100vw - 32px));background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r-lg);box-shadow:var(--shadow-2);padding:1rem 1.1rem;font-size:.875rem}
.consent-bar p{margin:0 0 .75rem;color:var(--ink-2)}
.consent-actions{display:flex;gap:.5rem;justify-content:flex-end;flex-wrap:wrap}
#consent-choices{display:grid;gap:.75rem;margin:1rem 0}
.choice{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.85rem 1rem}
.choice p{margin:.2rem 0 0}
.choice-actions{display:flex;gap:.5rem;flex-wrap:wrap}
.choice-actions .btn[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent-line);color:var(--accent-ink)}

/* Hero before / after (landing.js) */
.flip{position:relative;margin:1.2rem 0 .3rem}
.flip-row{margin:0}
.flip-row small{display:block;font:600 12px/1.4 var(--font-ui);letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.flip-row .spec-word{display:block;margin:.1rem 0 .5rem}
.flip-row.before .spec-word{font-family:'Rakkas Original',var(--font-display)}
.flip-row .borrowed{color:var(--mark);background:var(--mark-soft);border-radius:3px}
.flip.animated{display:grid}
.flip.animated .flip-row{grid-area:1/1;transition:opacity .6s ease,transform .6s ease}
.flip.animated .flip-row.after{opacity:0;transform:translateY(6px)}
.flip.animated.show-after .flip-row.before{opacity:0;transform:translateY(-6px)}
.flip.animated.show-after .flip-row.after{opacity:1;transform:none}
.cta-note{margin:.2rem 0 0;font-size:.875rem;color:var(--muted)}
.phone-cta{margin:1rem 0 0;padding:.8rem 1rem;border:1px dashed var(--line-2);border-radius:var(--r-md);font-size:.9rem}
.phone-cta p{margin:0 0 .6rem}
.phone-cta .send-status{display:block;margin-top:.4rem;font-size:.85rem;color:var(--muted);overflow-wrap:anywhere}
@media (prefers-reduced-motion:reduce){.flip.animated .flip-row{transition:none}}
/* ---- /kham-font (Font Doctor) ---- */
.doctor-drop{display:flex;flex-direction:column;align-items:center;gap:.35rem;text-align:center;margin:1.6rem 0 .6rem;padding:2rem 1.2rem;border:2px dashed var(--line-2);border-radius:var(--r-lg);background:var(--surface);cursor:pointer;transition:border-color .2s,background .2s}
.doctor-drop:hover,.doctor-drop:focus-visible,.doctor-drop.drag{border-color:var(--accent);background:var(--accent-soft);outline:none}
.doctor-drop-icon{font:600 30px/1 var(--font-display);color:var(--accent-ink);background:var(--accent-soft);border-radius:var(--r-md);padding:.5rem .7rem}
.doctor-drop small{color:var(--muted)}
.doctor-busy{color:var(--muted)}
.doctor-report{margin:1.4rem 0 1rem;padding:0;scroll-margin-top:90px}
.doctor-verdict{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;padding:1.1rem 1.2rem;border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface)}
.doctor-verdict.ok{border-color:var(--ok);background:var(--ok-soft)}
.doctor-verdict.warn{border-color:var(--warn);background:var(--warn-soft)}
.doctor-verdict.bad{border-color:var(--bad);background:var(--bad-soft)}
.doctor-verdict h2{margin:.3rem 0 .2rem;font-size:clamp(1.4rem,1.1rem + 1vw,1.8rem);overflow-wrap:anywhere}
.doctor-verdict p{margin:0;color:var(--ink-2)}
.doctor-badge{display:inline-block;font:700 12px/1 var(--font-ui);letter-spacing:.05em;text-transform:uppercase;padding:.35rem .55rem;border-radius:99px;background:var(--surface);border:1px solid currentColor}
.doctor-verdict.ok .doctor-badge{color:var(--ok)}.doctor-verdict.warn .doctor-badge{color:var(--warn)}.doctor-verdict.bad .doctor-badge{color:var(--bad)}
.doctor-actions{display:flex;flex-wrap:wrap;gap:.5rem}
.doctor-sample{margin:1rem 0;padding:1rem 1.2rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.doctor-line{margin:.1rem 0;font-size:clamp(1.6rem,1.2rem + 1.8vw,2.4rem);line-height:1.35;color:var(--ink);overflow-wrap:anywhere}
.doctor-line.tall{font-size:clamp(1.3rem,1rem + 1.2vw,1.8rem);letter-spacing:.04em}
.doctor-sample .borrowed,.doctor .field-help .borrowed{color:var(--mark);background:var(--mark-soft);border-radius:3px}
.doctor-checks{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.5rem}
.doctor-checks li{display:flex;gap:.75rem;align-items:flex-start;padding:.75rem .9rem;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface)}
.doctor-checks b{display:block}
.doctor-checks p{margin:.15rem 0 0;color:var(--ink-2);font-size:.95em}
.doctor-icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font:700 14px/1 var(--font-ui);background:var(--sunken);color:var(--muted)}
.doctor-checks .ok .doctor-icon{background:var(--ok-soft);color:var(--ok)}
.doctor-checks .warn .doctor-icon{background:var(--warn-soft);color:var(--warn)}
.doctor-checks .bad .doctor-icon{background:var(--bad-soft);color:var(--bad)}
.doctor-more{margin:.8rem 0;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);padding:.7rem .9rem}
.doctor-more summary{cursor:pointer;font-weight:600}
.doctor-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:4px;margin-top:.7rem}
.doctor-grid span{display:flex;align-items:center;justify-content:center;height:44px;font-size:24px;border-radius:6px;background:var(--sunken)}
.doctor-grid span.miss{background:var(--mark-soft);color:var(--mark);outline:1px dashed var(--mark);outline-offset:-1px}
.doctor-facts{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.5rem 1rem;margin:.7rem 0 0}
.doctor-facts dt{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.doctor-facts dd{margin:0;overflow-wrap:anywhere}
.doctor-license{font-size:13px;color:var(--ink-2);white-space:pre-line;max-height:12em;overflow:auto;margin:.8rem 0 0;overflow-wrap:anywhere}
.doctor-private{margin-top:.6rem}
.doctor-auto{margin-top:1rem;padding:1rem 1.2rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}
.doctor-auto-head{display:flex;flex-wrap:wrap;gap:.4rem .8rem;align-items:baseline;margin-bottom:.6rem}
.doctor-auto .progress-track{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.doctor-auto-fill{height:100%;background:var(--accent,#4f5bd5);border-radius:99px;transition:width .6s ease}
.doctor-auto-tip{margin:.5rem 0 0;font-size:14px;color:var(--ink-2)}
.doctor-auto-msg{margin:0;padding:.7rem .9rem;border-radius:var(--r-md)}
.doctor-auto-msg.warn{background:var(--warn-soft)}.doctor-auto-msg.bad{background:var(--bad-soft)}
.doctor-auto-done .doctor-badge{color:var(--ok);border-color:var(--ok)}
.doctor-auto-done .doctor-sample{margin:.6rem 0 .8rem}
.doctor-auto-done .doctor-actions{margin-bottom:.4rem}
@media (prefers-reduced-motion:reduce){.doctor-auto-fill{transition:none}}
@media (max-width:560px){.doctor-actions{width:100%}.doctor-actions .btn{flex:1;justify-content:center}.doctor-auto-done #doctor-open{flex-basis:100%}}
.page-narrow.doctor ul.doctor-checks{padding-left:0}

/* ---- Tool pages (/tap-viet-o-li, /bang-chu-cai, /chuyen-font-vni, /sua-loi-vien-chu) and the home "Công cụ" grid ----
   Each page has a stage: a small live version of the Studio tool that works in the page, no engine needed. */
@font-face{font-family:'VFE Caveat';src:url(/showcase/art/caveatbrush-vn.woff2) format('woff2');font-display:swap}
@font-face{font-family:'VFE Retro';src:url(/showcase/art/retroscript-vn.woff2) format('woff2');font-display:swap}
@font-face{font-family:'VFE Retro Welded';src:url(/showcase/art/retroscript-vn-weld.woff2) format('woff2');font-display:swap}
@font-face{font-family:'VFE Bagel';src:url(/showcase/art/bagel-vn.woff2) format('woff2');font-display:swap}
@font-face{font-family:'VFE Bubbles';src:url(/showcase/art/bubbles-vn.woff2) format('woff2');font-display:swap}
.crumbs{font-size:.875rem;color:var(--muted);margin:0 0 .4rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent-ink)}
.tool-hero{padding-top:clamp(28px,4vw,56px);padding-bottom:clamp(40px,5vw,72px);background:radial-gradient(1200px 420px at 85% -10%,var(--accent-soft),transparent 60%)}
.tool-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:clamp(28px,4.5vw,64px);align-items:center}
.tool-hero h1{font-size:clamp(2.1rem,1.3rem + 3vw,3.4rem);max-width:13em}
.tool-hero .lead{margin-bottom:0}
.tool-perks{display:flex;flex-wrap:wrap;gap:.45rem;margin:1.4rem 0 0;padding:0;list-style:none}
.tool-perks li{font:600 .8125rem/1 var(--font-ui);color:var(--ink-2);background:var(--surface);border:1px solid var(--line);border-radius:99px;padding:.5rem .75rem}
.tool-perks li::before{content:"✓";color:var(--ok);margin-right:.35rem}
/* stage: the live tool */
.stage{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 60px -28px rgba(37,52,166,.35),var(--shadow-2);padding:clamp(16px,2.2vw,24px);min-width:0}
.stage-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;margin:0 0 .9rem}
.stage-head b{font:600 1rem/1.3 var(--font-ui)}
.live{display:inline-flex;align-items:center;gap:.4rem;font:600 .75rem/1 var(--font-ui);color:var(--ok);background:var(--ok-soft);border-radius:99px;padding:.35rem .6rem;white-space:nowrap}
.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(31,122,85,.5);animation:pulse 2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 7px rgba(31,122,85,0)}100%{box-shadow:0 0 0 0 rgba(31,122,85,0)}}
.stage-field{display:flex;gap:.5rem;align-items:center;margin:0 0 .8rem}
.stage-field input{flex:1;min-width:0;font:500 1.0625rem/1.2 var(--font-ui);min-height:48px;border:1.5px solid var(--line-2);border-radius:12px;padding:.6rem .9rem;background:var(--paper);color:var(--ink);transition:border-color .15s,box-shadow .15s}
.stage-field input:focus{outline:none;border-color:var(--accent);box-shadow:var(--focus);background:var(--surface)}
.chips{display:flex;flex-wrap:wrap;gap:.35rem;margin:.2rem 0 .8rem}
.chips button{font:500 .875rem/1.1 var(--font-ui);min-height:36px;padding:.45rem .8rem;border:1px solid var(--line-2);border-radius:99px;background:var(--surface);color:var(--ink-2);cursor:pointer;transition:all .15s}
.chips button:hover{border-color:var(--ink-2)}
.chips button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.chips .swatch{width:36px;padding:0;border-radius:50%;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--line-2)}
.chips .swatch[aria-pressed=true]{box-shadow:0 0 0 2px var(--ink)}
.stage-canvas{display:block;width:100%;height:auto;border-radius:12px;background:#fff;border:1px solid var(--line)}
.stage-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem;margin-top:.9rem}
.stage-foot small{color:var(--muted);font-size:.8125rem}
/* before / after with a handle to drag */
.ba{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#fff;touch-action:none;cursor:ew-resize;user-select:none}
.ba canvas{display:block;width:100%;height:auto}
.ba .ba-after{position:absolute;inset:0;clip-path:inset(0 0 0 var(--cut,50%))}
.ba .ba-line{position:absolute;top:0;bottom:0;left:var(--cut,50%);width:2px;margin-left:-1px;background:var(--accent)}
.ba .ba-knob{position:absolute;top:50%;left:var(--cut,50%);width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--accent);box-shadow:0 6px 16px rgba(37,52,166,.4);display:grid;place-items:center;color:#fff;font:700 15px/1 var(--font-ui);letter-spacing:-.05em}
.ba .ba-knob:focus-visible{box-shadow:var(--focus),0 6px 16px rgba(37,52,166,.4)}
.ba .ba-tag{position:absolute;top:10px;font:700 .6875rem/1 var(--font-ui);letter-spacing:.06em;text-transform:uppercase;padding:.4rem .55rem;border-radius:99px;background:rgba(21,23,28,.75);color:#fff}
.ba .ba-tag.l{left:10px}.ba .ba-tag.r{right:10px;background:var(--accent)}
/* VNI decoder */
.decode{display:grid;gap:.7rem}
.decode textarea{font:500 1.0625rem/1.55 var(--font-ui);min-height:112px;resize:vertical;border-radius:12px;border:1.5px solid var(--line-2);background:var(--paper)}
.decode textarea:focus{outline:none;border-color:var(--accent);box-shadow:var(--focus)}
.decode .out{min-height:112px;padding:.9rem;border-radius:12px;border:1.5px solid var(--accent-line);background:linear-gradient(180deg,var(--accent-soft),var(--surface));font:500 1.25rem/1.55 var(--font-ui);color:var(--ink);white-space:pre-wrap;overflow-wrap:anywhere}
.decode .out .fixed{background:#fff3b0;border-radius:3px;transition:background 1.2s}
.decode-arrow{display:flex;align-items:center;gap:.6rem;font-size:.8125rem;color:var(--muted)}
.decode-arrow::before,.decode-arrow::after{content:"";flex:1;height:1px;background:var(--line)}
/* alphabet poster preview */
.abc{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;padding:10px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.abc span{display:flex;flex-direction:column;align-items:center;justify-content:center;aspect-ratio:1;border-radius:10px;font-size:clamp(22px,2.6vw,34px);line-height:1;color:#1d2433;transition:transform .2s}
.abc span small{font-size:.48em;opacity:.75;margin-top:.12em}
.abc span:hover{transform:translateY(-2px) rotate(-2deg)}
.abc.bw span{background:#fff!important;border:1.5px solid #1d2433;color:#1d2433}
/* steps and tool cards */
.how{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;counter-reset:h;padding:0;margin:0;list-style:none}
.how li{counter-increment:h;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.25rem 1.3rem}
.how li::before{content:counter(h);display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);font:700 1rem/1 var(--font-ui);margin-bottom:.8rem}
.how b{display:block;margin-bottom:.3rem}
.how span{color:var(--muted);font-size:.9375rem}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));gap:1rem}
.tool-card{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;color:var(--ink);text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,border-color .2s}
.tool-card:hover{transform:translateY(-4px);box-shadow:0 22px 40px -24px rgba(21,23,28,.35);border-color:var(--line-2);color:var(--ink)}
.tool-card .peek{height:118px;display:grid;place-items:center;background:var(--sunken);font-size:46px;line-height:1;overflow:hidden;border-bottom:1px solid var(--line)}
.tool-card .peek.oli{background:#fff linear-gradient(transparent 23px,#c7cbe8 24px) 0 0/100% 24px;font-family:'VFE Playwrite',var(--font-display);font-size:30px;white-space:nowrap;color:#1d2433}
.tool-card .peek.oli em{font-style:normal;color:#b9bfd6}
.tool-card .peek.abc-peek{background:linear-gradient(135deg,#ffe3e3,#e3f0ff 50%,#e6f7e6);font-family:'VFE Bubbles',var(--font-display);color:#2b2f60;letter-spacing:.06em}
.tool-card .peek.vni{font:600 22px/1.4 var(--font-ui);flex-direction:column;gap:.1rem}
.tool-card .peek.vni s{color:var(--mark);text-decoration-thickness:2px}
.tool-card .peek.weld{font-family:'VFE Retro Welded',var(--font-display);color:#fff;-webkit-text-stroke:2px var(--accent);paint-order:stroke fill;background:#ffe9c7}
.tool-card .peek.doctor{font:600 40px/1 var(--font-display);color:var(--ok)}
.tool-card .peek.store-peek{background:linear-gradient(135deg,#fff4e0,#f0e8ff);gap:.5rem;grid-auto-flow:column;color:#2b2f60}
.tool-card .peek.store-peek .a{font-family:'VFE Retro',var(--font-display);color:#c2410c}
.tool-card .peek.store-peek .b{font-family:'VFE Caveat',var(--font-display)}
.tool-card .peek.store-peek .c{font-family:'VFE Bagel',var(--font-display);color:#0f766e}
.tool-card .peek.batch-peek{grid-auto-flow:column;gap:.35rem;font:600 30px/1 var(--font-display);color:var(--ink-2)}
.tool-card .peek.batch-peek span{display:grid;place-items:center;width:52px;height:60px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 6px 14px -10px rgba(21,23,28,.4)}
.tool-card .peek.batch-peek span:nth-child(2){transform:translateY(-6px) rotate(-3deg)}
.tool-card .peek.batch-peek span:nth-child(3){transform:rotate(3deg)}
.tool-card .peek.batch-peek b{font:700 18px/1 var(--font-ui);color:var(--accent-ink);margin-left:.3rem}
.tool-card div.body{padding:1rem 1.1rem 1.15rem}
.tool-card h3{margin:0 0 .3rem}
.tool-card p{margin:0;color:var(--muted);font-size:.9375rem}
.tool-card .go-on{margin-top:.6rem;font:600 .875rem/1 var(--font-ui);color:var(--accent-ink)}
.tool-card .go-on::after{content:" →";transition:margin .2s}
.tool-card:hover .go-on::after{margin-left:.25rem}
.related{display:flex;flex-wrap:wrap;gap:.5rem}
.related a{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem .9rem;border:1px solid var(--line-2);border-radius:99px;background:var(--surface);color:var(--ink-2);text-decoration:none;font-size:.9375rem}
.related a:hover{border-color:var(--accent);color:var(--accent-ink)}
.cta-band{background:var(--ink);color:#fff;border-radius:24px;padding:clamp(28px,4vw,52px);display:flex;flex-wrap:wrap;gap:1.2rem 2rem;align-items:center;justify-content:space-between;background-image:radial-gradient(600px 200px at 100% 0%,rgba(122,140,255,.35),transparent 70%)}
.cta-band h2{color:#fff;margin:0 0 .4rem}
.cta-band p{margin:0;color:#c9ccd6;max-width:38em}
.cta-band .btn{background:#fff;border-color:#fff;color:var(--ink)}
.cta-band .btn:hover{background:var(--accent-soft)}
.prose{max-width:46em}
.prose p,.prose li{color:var(--ink-2)}
.prose h3{margin-top:1.4rem}
.rise{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.rise.in{opacity:1;transform:none}
@media (max-width:900px){.tool-grid{grid-template-columns:1fr}.how{grid-template-columns:1fr}}
@media (max-width:560px){.abc{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media (prefers-reduced-motion:reduce){.rise{opacity:1;transform:none;transition:none}.live::before{animation:none}.tool-card,.abc span{transition:none}}

@font-face{font-family:'VFE Playwrite';src:url(/showcase/art/playwritevn.woff2) format('woff2');font-weight:100 400;font-display:swap}

/* Hướng dẫn: article pages */
.article{max-width:46rem;margin:0 auto;padding:clamp(28px,5vw,56px) 0 3rem}
.article h1{font:600 clamp(2rem,4.4vw,2.9rem)/1.15 var(--font-display);margin:.4rem 0 1rem}
.article h2{font:600 clamp(1.45rem,2.6vw,1.8rem)/1.25 var(--font-display);margin:2.6rem 0 .8rem;scroll-margin-top:90px}
.article h3{font:600 1.15rem/1.35 var(--font-ui);margin:1.6rem 0 .5rem}
.article p,.article li{color:var(--ink-2);font-size:1.0625rem;line-height:1.75}
.article ol,.article ul{padding-left:1.3rem}.article li{margin:.35rem 0}
.article .byline{color:var(--muted);font-size:.9rem;margin:0 0 1.6rem}
.answer{border:1px solid var(--accent-line);background:var(--accent-soft);border-radius:var(--r-lg);padding:1.1rem 1.3rem;margin:0 0 1.4rem}
.answer b:first-child{display:block;font:600 .8rem/1.4 var(--font-ui);letter-spacing:.06em;text-transform:uppercase;color:var(--accent,#2b47c9);margin-bottom:.35rem}
.answer p{margin:0;color:var(--ink)}
.article figure{margin:1.6rem 0}
.article figure img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid var(--line)}
.article figcaption{color:var(--muted);font-size:.9rem;margin-top:.55rem;line-height:1.5}
.article .toc{border-left:3px solid var(--line-2);padding:.2rem 0 .2rem 1rem;margin:1.4rem 0}
.article .toc a{color:var(--ink-2)}
.article .mid-cta{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center;margin:1.4rem 0}
.article table{width:100%;border-collapse:collapse;font-size:.98rem;margin:1rem 0}
.article th,.article td{text-align:left;padding:.6rem .7rem;border-bottom:1px solid var(--line)}
.article th{font-weight:600;color:var(--ink)}
.article .note{color:var(--muted);font-size:.95rem}
.guide-list{display:grid;gap:1rem;max-width:46rem;margin:0 auto}
.guide-list a{display:block;text-decoration:none;color:inherit}
.guide-list h2{font:600 1.35rem/1.3 var(--font-display);margin:.2rem 0 .4rem}
.guide-list p{margin:0;color:var(--ink-2)}
.tools-group{margin-top:clamp(22px,3vw,34px)}
.tools-group-head{display:flex;align-items:baseline;gap:.9rem;flex-wrap:wrap;margin-bottom:.75rem}
.tools-group-head h3{font:600 1.375rem/1.2 var(--font-display);margin:0}
.tools-group-head p{margin:0;color:var(--muted);font-size:.9375rem}
.tool-card .peek.hand{font:34px/1 'VFE Playwrite',var(--font-display);color:#1d2433;background:#fffdf7}
.tool-card .peek.viet{font:600 44px/1 var(--font-display);color:var(--accent);background:var(--accent-soft)}
.tool-card .peek.art{font:800 54px/1 var(--font-display);color:#fff;background:linear-gradient(135deg,#ff7a59,#c21f5b);text-shadow:0 3px 0 #7a0f37,0 6px 14px rgba(0,0,0,.25)}
.faq-more{margin:1.2rem 0 0;font-weight:600}
.faq-more a{color:var(--accent-ink)}