/* Build-in-public page (/build-in-public): night-field hero, then chapters of real screens on the landing tokens. */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--k-font);font-size:var(--k-fs-18);line-height:1.65;color:var(--brand-ink);background:var(--brand-page);-webkit-font-smoothing:antialiased}
a{color:var(--brand-link)}
a:focus-visible{outline:3px solid var(--k-focus);outline-offset:3px;border-radius:4px}
.defs{position:absolute}
h1,h2,h3{font-weight:var(--k-w-black);letter-spacing:-.02em}
h2{margin:0 0 16px;font-size:clamp(28px,4vw,40px);line-height:1.2}
h3{margin:0 0 6px;font-size:var(--k-fs-20);line-height:1.35;font-weight:var(--k-w-heavy);letter-spacing:-.01em}
p{margin:0 0 16px}
.muted{color:var(--brand-muted);font-size:var(--k-fs-15)}

/* Hero on the night field */
.hero{position:relative;overflow:hidden;background:var(--k-m-field);color:var(--k-m-ink);padding-bottom:0}
.bar{display:flex;align-items:center;justify-content:space-between;max-width:1120px;margin:0 auto;padding:22px 24px;position:relative;z-index:2}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:var(--k-w-black);font-size:var(--k-fs-20);color:inherit;text-decoration:none}
.brand svg{width:24px;height:24px}
.wing{fill:var(--k-m-wing)}
.bar-link{color:var(--k-m-ink-2);font-size:var(--k-fs-15);font-weight:var(--k-w-bold);text-decoration:none}
.bar-link:hover{color:var(--k-m-ink)}
.hero-in{position:relative;z-index:2;max-width:1120px;margin:0 auto;padding:48px 24px 0;text-align:center}
.eyebrow{display:inline-block;margin:0 0 20px;padding:6px 14px;border:1px solid var(--k-m-glass-line);border-radius:999px;background:var(--k-m-glass);font-size:var(--k-fs-13);font-weight:var(--k-w-bold);letter-spacing:.06em;text-transform:uppercase;color:var(--k-m-ink-2)}
.hero h1{max-width:900px;margin:0 auto;font-size:clamp(34px,6vw,64px);line-height:1.1}
.hero h1 em{font-style:normal;color:var(--k-m-wing)}
.lead{max-width:680px;margin:24px auto 0;font-size:var(--k-fs-20);color:var(--k-m-ink-2)}
.hero-shot{margin:56px auto 0;max-width:1040px;padding:10px 10px 0;border-radius:18px 18px 0 0;background:var(--k-m-glass);border:1px solid var(--k-m-glass-line);border-bottom:0}
.hero-shot img{display:block;width:100%;height:auto;border-radius:10px 10px 0 0}
.hero-shot figcaption{margin:0;padding:10px 4px 12px;font-size:var(--k-fs-14);color:var(--k-m-ink-2);text-align:center}
.hero-kite{position:absolute;right:6%;top:90px;width:110px;color:var(--k-m-ink);opacity:.9;z-index:1}

/* Numbers band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);max-width:1120px;margin:0 auto;padding:40px 24px;gap:24px}
.stats div{border-left:3px solid var(--k-wing);padding:4px 0 4px 16px}
.stats strong{display:block;font-size:clamp(32px,4vw,44px);font-weight:var(--k-w-black);line-height:1.1;color:var(--k-cobalt)}
.stats span{display:block;margin-top:6px;font-size:var(--k-fs-15);line-height:1.45;color:var(--brand-ink-2)}

main{max-width:1120px;margin:0 auto;padding:0 24px}

/* Story */
.story{padding:56px 0 24px;border-top:1px solid var(--brand-line)}
.story-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start}
.lessons{margin:0;padding:0;list-style:none;counter-reset:l}
.lessons li{position:relative;padding:18px 18px 4px 62px;margin:0 0 12px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius)}
.lessons li::before{counter-increment:l;content:counter(l);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;background:var(--k-wing);color:#fff;font-weight:var(--k-w-black);font-size:var(--k-fs-15);display:grid;place-items:center}
.lessons p{color:var(--brand-ink-2);font-size:var(--k-fs-16)}

/* Chapters */
.chapter{padding:72px 0 8px}
.kicker{margin:0 0 10px;font-size:var(--k-fs-14);font-weight:var(--k-w-black);letter-spacing:.08em;text-transform:uppercase;color:var(--k-wing)}
.chapter h2{max-width:820px}
.intro{max-width:760px;color:var(--brand-ink-2);font-size:var(--k-fs-20)}
figure{margin:0 0 28px}
figure img{display:block;width:100%;height:auto;border-radius:14px;border:1px solid var(--brand-line);background:var(--brand-surface);box-shadow:0 24px 48px -28px rgba(19,42,102,.45)}
figcaption{margin:12px 2px 0;font-size:var(--k-fs-15);line-height:1.5;color:var(--brand-ink-2)}
.wide{margin-top:32px}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:32px}
.duo figure img{aspect-ratio:16/10;object-fit:cover;object-position:top}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 0;padding:0;list-style:none}
.chips li{padding:8px 14px;border-radius:999px;background:var(--brand-surface);border:1px solid var(--brand-line);font-size:var(--k-fs-15);font-weight:var(--k-w-bold)}
.shot-tag{display:inline-block;margin-right:6px;padding:1px 10px;border-radius:999px;border:1px solid var(--k-wing);color:var(--k-wing);font-size:var(--k-fs-13);font-weight:var(--k-w-bold);vertical-align:1px}
.agent{margin-top:8px;padding:24px 28px 8px;border-radius:16px;background:var(--k-m-field);color:var(--k-m-ink)}
.agent p{color:var(--k-m-ink-2);max-width:760px}

/* Progress */
.progress-sec{padding:72px 0 24px;max-width:820px}
.timeline{margin:28px 0 36px;padding:0;list-style:none;border-left:2px solid var(--brand-line)}
.timeline li{position:relative;display:grid;grid-template-columns:132px 1fr;gap:4px 20px;padding:0 0 22px 24px}
.timeline li::before{content:"";position:absolute;left:-7px;top:9px;width:12px;height:12px;border-radius:50%;background:var(--k-cobalt);border:2px solid var(--brand-page)}
.timeline time{font-size:var(--k-fs-15);font-weight:var(--k-w-bold);color:var(--brand-ink-2);padding-top:2px}
.timeline h3{margin-bottom:4px}
.timeline h3 a{color:inherit}
.timeline p{margin:0;font-size:var(--k-fs-16);color:var(--brand-ink-2)}
.timeline .is-wip::before{background:var(--brand-page);border-color:var(--k-wing)}
.timeline .is-wip time{color:var(--k-wing)}
.next{margin:12px 0 0;padding-left:1.3em}
.next li{margin:0 0 10px;font-size:var(--k-fs-16);color:var(--brand-ink-2)}
.next strong{color:var(--brand-ink)}
.note{margin:24px 0;padding:22px 26px 6px;border-left:4px solid var(--k-wing);background:var(--brand-surface);border-radius:0 var(--brand-radius) var(--brand-radius) 0}

/* Closing */
.cta{margin-top:56px;background:var(--k-m-field);color:var(--k-m-ink)}
.cta-in{max-width:820px;margin:0 auto;padding:72px 24px}
.cta p{color:var(--k-m-ink-2);font-size:var(--k-fs-20)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px 28px;margin:28px 0 36px}
.btn{display:inline-block;padding:15px 26px;border-radius:999px;background:var(--k-m-wing);color:#fff;font-weight:var(--k-w-heavy);text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.cta .link{color:var(--k-m-ink);font-weight:var(--k-w-bold)}
.sign{display:flex;align-items:center;gap:14px}
.sign img{border-radius:50%;object-fit:cover;border:2px solid var(--k-m-glass-line)}
.sign p{margin:0;font-size:var(--k-fs-15);line-height:1.4}
.sign strong{color:var(--k-m-ink)}
.foot{background:var(--k-m-900);color:var(--k-m-ink-2);text-align:center;padding:20px;font-size:var(--k-fs-14)}
.foot p{margin:0}

@media (max-width:860px){
  .stats{grid-template-columns:1fr 1fr}
  .story-grid,.duo{grid-template-columns:1fr}
  .hero-kite{display:none}
  .hero-in{text-align:left}
  .lead{margin-left:0}
  .hero-shot{margin-top:40px}
  .chapter{padding-top:56px}
  .timeline li{grid-template-columns:1fr}
}

/* Release notes (/releases/<version>) */
.notes-hero{padding-bottom:64px}
.notes{margin:0 0 24px;padding:0;list-style:none}
.notes li{display:flex;gap:14px;align-items:baseline;padding:16px 0;border-bottom:1px solid var(--brand-line)}
.tag{flex:none;min-width:84px;padding:3px 10px;border-radius:999px;font-size:var(--k-fs-13);font-weight:var(--k-w-bold);text-align:center;background:var(--brand-surface);border:1px solid var(--brand-line)}
.tag-security{color:var(--k-wing);border-color:var(--k-wing)}

/* Install page (/install): one path from a blank VPS to the Cất cánh setup screen. */
.install-hero .hero-in{padding-bottom:72px}
.install-main{max-width:960px}
.install-step{padding:72px 0 8px;border-top:1px solid var(--brand-line)}
.install-step h2{max-width:820px}
.install-step .intro{max-width:780px}
.install-downloads{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:32px}
.install-card{min-width:0;padding:24px 22px 22px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius)}
.install-card h3{margin-bottom:10px}
.install-card p{font-size:var(--k-fs-16);color:var(--brand-ink-2)}
.install-card p:last-of-type{margin-bottom:0}
.install-card a{font-weight:var(--k-w-bold)}
.install-code{margin:18px 0 0;padding:16px 18px;border-radius:12px;background:var(--k-m-field);color:var(--k-m-ink);overflow:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:var(--k-fs-14);line-height:1.55}
.install-code code{font:inherit}
.install-links{margin:0;padding:0;list-style:none}
.install-links li{padding:10px 0;border-top:1px solid var(--brand-line);font-size:var(--k-fs-15)}
.install-links li:first-child{border-top:0;padding-top:0}
.install-links li:last-child{padding-bottom:0}
.install-links a{display:inline-block;margin-top:2px}
.install-dns{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.install-dns div{padding:20px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius)}
.install-dns code{display:block;margin-bottom:6px;color:var(--k-string-strong);font-weight:var(--k-w-heavy)}
.install-command{margin-top:24px}
.install-command .install-code{margin-top:10px}
.install-callout{margin-top:28px;padding:24px 26px 8px;border-left:4px solid var(--k-wing);background:var(--brand-surface);border-radius:0 var(--brand-radius) var(--brand-radius) 0}
.install-callout strong{color:var(--k-wing)}
.install-callout .install-code{margin-bottom:16px}
.install-checks{margin-top:24px}
.install-checks p{max-width:780px}

@media (max-width:860px){
  .install-downloads{grid-template-columns:1fr}
  .install-dns{grid-template-columns:1fr}
}

/* Long-form pages (/eula, /huong-dan/*, /releases/): readable prose column, tables that scroll instead of squeezing. */
.doc-main{max-width:820px;padding-bottom:72px}
.doc{padding-top:40px}
.doc h2{margin:48px 0 14px;font-size:clamp(24px,3.2vw,32px)}
.doc h2.doc-title{margin-top:64px;padding-top:32px;border-top:1px solid var(--brand-line)}
.doc h3{margin-top:28px}
.doc ul,.doc ol{margin:0 0 20px;padding-left:1.4em}
.doc li{margin:0 0 8px}
.doc hr{margin:48px 0 0;border:0;border-top:1px solid var(--brand-line)}
.doc code{padding:1px 6px;border-radius:6px;background:var(--brand-surface);font-size:.92em;overflow-wrap:anywhere}
.doc-table{margin:0 0 24px;overflow-x:auto;border:1px solid var(--brand-line);border-radius:var(--brand-radius)}
.doc table{width:100%;min-width:520px;border-collapse:collapse;font-size:var(--k-fs-15);line-height:1.5}
.doc th,.doc td{padding:12px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--brand-line)}
.doc th{background:var(--brand-surface);font-weight:var(--k-w-heavy)}
.doc tr:last-child td{border-bottom:0}
.guide-list{margin:40px 0 0;padding:0;list-style:none;display:grid;gap:16px}
.guide-list a{display:block;padding:22px 24px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius);text-decoration:none;color:var(--brand-ink)}
.guide-list a:hover{border-color:var(--k-wing)}
.guide-list strong{display:block;margin-bottom:4px;font-size:var(--k-fs-20)}
.guide-list span{color:var(--brand-ink-2);font-size:var(--k-fs-16)}
.release-list{margin:40px 0 0;padding:0;list-style:none;display:grid;gap:16px}
.release-list a{display:block;padding:22px 24px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius);text-decoration:none;color:var(--brand-ink)}
.release-list a:hover{border-color:var(--k-wing)}
.release-list strong{display:block;margin-bottom:4px;font-size:var(--k-fs-20)}
.release-list span{color:var(--brand-ink-2);font-size:var(--k-fs-16)}
.foot-links{display:flex;flex-wrap:wrap;justify-content:center;gap:0 24px;margin:0 0 8px}
.foot-links a{display:inline-flex;align-items:center;min-height:44px;color:var(--k-m-ink)}
.support-line{margin:32px 0 0;padding:20px 24px;border-left:4px solid var(--k-wing);background:var(--brand-surface);border-radius:0 var(--brand-radius) var(--brand-radius) 0}
.support-line p{margin:0}
.install-prereq{margin:24px 0 0;padding:0;list-style:none;display:grid;gap:12px}
.install-prereq li{padding:18px 22px;background:var(--brand-surface);border:1px solid var(--brand-line);border-radius:var(--brand-radius);font-size:var(--k-fs-16)}
.install-errors .doc-table{margin-top:28px}
.install-errors table{width:100%;min-width:560px;border-collapse:collapse;font-size:var(--k-fs-15);line-height:1.5}
.install-errors th,.install-errors td{padding:12px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--brand-line)}
.install-errors th{background:var(--brand-surface);font-weight:var(--k-w-heavy)}
.install-errors tr:last-child td{border-bottom:0}
.install-errors code{overflow-wrap:anywhere}
.install-main .doc-table{overflow-x:auto;border:1px solid var(--brand-line);border-radius:var(--brand-radius)}
@media (max-width:640px){
  .doc table,.install-errors table{min-width:0;display:block}
  .doc thead,.install-errors thead{display:none}
  .doc tbody,.install-errors tbody,.doc tr,.install-errors tr,.doc td,.install-errors td{display:block}
  .doc tr,.install-errors tr{padding:14px 16px;border-bottom:1px solid var(--brand-line)}
  .doc tr:last-child,.install-errors tr:last-child{border-bottom:0}
  .doc td,.install-errors td{padding:0;border:0}
  .doc td:first-child,.install-errors td:first-child{margin-bottom:6px;font-weight:var(--k-w-heavy)}
  .doc td:first-child code,.install-errors td:first-child code{font-weight:var(--k-w-bold)}
}