/* KidGuard(가칭): 우리 집 시간표. 모눈 종이, 먹색 테두리, 금잔화 노랑. */
:root{
  --ink:#16233A;--ink-2:#42506A;--paper:#FBF8EF;--paper-2:#F2ECDB;--line:#D9D2BD;
  --gold:#F4B52F;--gold-soft:#FBE3A6;--ok:#1E7A5A;--ok-soft:#CFE8DC;--stop:#B93A1E;
  --radius:10px;--shadow:4px 4px 0 var(--ink);
  --sans:"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 17px/1.75 var(--sans);word-break:keep-all;overflow-wrap:anywhere}
img,svg{max-width:100%;height:auto}
a{color:inherit;text-underline-offset:3px}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(2.2rem,6.4vw,4rem)}
h2{font-size:clamp(1.7rem,4.2vw,2.7rem)}
h3{font-size:1.14rem}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
main:focus{outline:none}
:focus-visible{outline:3px solid var(--stop);outline-offset:3px;border-radius:4px}
.wrap{width:min(1120px,100%);margin-inline:auto;padding-inline:clamp(18px,4vw,32px)}
.narrow{width:min(760px,100%)}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px}
.skip:focus{top:12px}
.small{font-size:.92rem;color:var(--ink-2)}
.eyebrow{font-size:.9rem;font-weight:700;line-height:1.5;color:var(--ink-2);margin-bottom:12px}
.intro{max-width:640px;margin-top:16px;color:var(--ink-2)}

.site-header{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:2px solid var(--ink)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:6px 22px;padding-block:10px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:1.1rem}
.brand img{border-radius:9px;display:block}
.brand small{margin-left:6px;font-size:.76rem;font-weight:500;color:var(--ink-2)}
.site-nav{display:flex;flex-wrap:wrap;gap:2px 16px;margin-left:auto;font-size:.95rem}
.site-nav a{text-decoration:none;padding:6px 2px}
.site-nav a:hover{text-decoration:underline}
.pill{background:var(--gold);border:2px solid var(--ink);border-radius:999px;padding:2px 12px;font-size:.84rem;font-weight:700;white-space:nowrap}

.hero{background-color:var(--paper);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;border-bottom:2px solid var(--ink)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(28px,5vw,64px);align-items:center;padding-block:clamp(48px,8vw,96px)}
.hero-copy{min-width:0}
.lead{font-size:clamp(1.05rem,2vw,1.2rem);margin-top:20px;max-width:560px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.button{display:inline-block;background:var(--ink);color:#fff;border:2px solid var(--ink);border-radius:var(--radius);padding:11px 20px;font-weight:700;text-decoration:none;box-shadow:3px 3px 0 var(--gold);transition:transform .15s ease,box-shadow .15s ease}
.button:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--gold)}
.button.ghost{background:var(--paper);color:var(--ink);box-shadow:3px 3px 0 var(--ink)}
.notice{background:var(--gold-soft);border:2px solid var(--ink);border-radius:var(--radius);padding:12px 16px;font-size:.96rem;max-width:560px}

.daycard{margin:0;min-width:0;background:#fff;border:2px solid var(--ink);border-radius:14px;box-shadow:var(--shadow);padding:20px}
.daycard-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2px 12px;margin-bottom:14px}
.daycard-top span{font-size:.86rem;color:var(--ink-2)}
.dayscale{display:flex;justify-content:space-between;font:500 .74rem var(--mono);color:var(--ink-2);margin-bottom:4px}
.daybar{display:grid;grid-template-columns:repeat(24,1fr);height:44px;border:2px solid var(--ink);border-radius:6px;overflow:hidden}
.daybar i{display:block}
.daybar i+i{border-left:1px solid rgba(22,35,58,.12)}
i.ok{background:var(--ok)}
i.bed{background:var(--ink)}
i.off{background:var(--paper-2)}
.legend{list-style:none;margin:14px 0 18px;display:grid;gap:4px;font-size:.92rem}
.legend li{display:flex;align-items:center;gap:8px}
.legend i{width:14px;height:14px;border-radius:3px;flex:none}
.legend b{margin-left:auto;font:600 .86rem var(--mono)}
.budget{height:16px;border:2px solid var(--ink);border-radius:999px;background:var(--paper-2);overflow:hidden}
.budget span{display:block;height:100%;background:var(--gold)}
.budget-label{display:flex;justify-content:space-between;gap:12px;font-size:.92rem;margin:6px 0 12px}
.daycard figcaption,.topology figcaption{font-size:.82rem;color:var(--ink-2);line-height:1.5}

.section{padding-block:clamp(56px,8vw,96px)}
.tint{background:var(--paper-2);border-block:2px solid var(--ink)}
.ink{background:var(--ink);color:#F6F1E4}
.ink .eyebrow,.ink .intro{color:#C8CFDB}

.topology{margin:36px 0 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr) minmax(0,1fr);gap:14px;align-items:stretch}
.node{background:#fff;border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;gap:4px;min-width:0}
.node.pc{background:var(--gold-soft)}
.tag{font-size:.84rem;font-weight:700;color:var(--ink-2)}
.node small{color:var(--ink-2);font-size:.88rem}
.links{display:flex;flex-direction:column;justify-content:center;gap:8px;min-width:0}
.links p{margin:0;border-block:2px dashed var(--ink);padding:6px 4px;text-align:center;font-size:.92rem;line-height:1.5}
.links p+p{border-top:0}
.links b{display:block}
.noserver{grid-column:1/-1;margin:6px 0 0;text-align:center;font-weight:700}
.noserver s{text-decoration-color:var(--stop);text-decoration-thickness:2px}
.topology figcaption{grid-column:1/-1;text-align:center}
.steps{list-style:none;counter-reset:s;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 36px;margin-top:40px}
.steps li{counter-increment:s;border-top:2px solid var(--ink);padding-top:12px}
.steps li::before{content:"0" counter(s);font:600 .84rem var(--mono);color:var(--ink-2)}
.steps p{margin:6px 0 0;color:var(--ink-2)}

.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:36px}
.feature-grid article,.need-grid article{background:#fff;border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:20px;min-width:0}
.feature-grid ul{list-style:none;margin-top:10px}
.feature-grid li{position:relative;padding:5px 0 5px 20px;font-size:.98rem;line-height:1.6}
.feature-grid li::before{content:"";position:absolute;left:2px;top:13px;width:9px;height:9px;background:var(--gold);border:2px solid var(--ink);border-radius:2px}

.demo{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,56px);align-items:center}
.demo h2{margin-bottom:16px}
.demo-card{background:#fff;border:2px solid var(--ink);border-radius:12px;box-shadow:var(--shadow);padding:20px;min-width:0}
.demo-card fieldset{border:0;padding:0;margin:0 0 16px;display:flex;flex-wrap:wrap;gap:8px}
.demo-card legend{font-weight:700;padding:0;margin-bottom:6px}
.demo-card fieldset label{cursor:pointer}
.demo-card fieldset input{position:absolute;opacity:0;width:1px;height:1px}
.demo-card fieldset span{display:inline-block;border:2px solid var(--ink);border-radius:999px;padding:4px 14px;font-size:.92rem}
.demo-card fieldset input:checked+span{background:var(--ink);color:#fff}
.demo-card fieldset input:focus-visible+span{outline:3px solid var(--stop);outline-offset:2px}
.range-label{display:flex;justify-content:space-between;gap:12px;font-weight:700}
.range-label output{font-family:var(--mono)}
input[type=range]{width:100%;margin:8px 0 14px;accent-color:var(--ink);height:28px}
.demo-state{display:block;min-height:7.2em;background:var(--paper-2);border:2px solid var(--ink);border-radius:8px;padding:12px 14px;font-size:.96rem;line-height:1.6}
.demo-state b{display:block}
.demo-state.warn{background:var(--gold-soft)}
.demo-state.end{background:var(--ink);color:#fff}
.demo-static{margin:0}
.demo-static div+div{margin-top:12px}
.demo-static dt{font-weight:700}
.demo-static dd{margin:0;color:var(--ink-2)}

.tamper{margin:36px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.tamper div{border-top:1px solid rgba(246,241,228,.35);padding:16px 0}
.tamper dt{font-weight:700;color:var(--gold)}
.tamper dd{margin:4px 0 0;font-size:.98rem}

.need-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:32px}
.need-grid p{margin:8px 0 0;font-size:.98rem;color:var(--ink-2)}
.num{display:inline-grid;place-items:center;width:32px;height:32px;background:var(--gold);border:2px solid var(--ink);border-radius:50%;font:700 .92rem var(--mono);margin-bottom:10px}

.limits{list-style:none;margin-top:32px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.limits li{border-top:2px solid var(--ink);padding:14px 0;font-size:.98rem}
.limits strong{display:block}

.status-list{margin:28px 0 0}
.status-list div{display:grid;grid-template-columns:120px minmax(0,1fr);gap:4px 20px;border-top:2px solid var(--ink);padding:14px 0}
.status-list dt{font-weight:700}
.status-list dd{margin:0}

details{border-top:2px solid var(--ink);padding:4px 0}
details:last-of-type{border-bottom:2px solid var(--ink)}
#faq h2{margin-bottom:24px}
summary{cursor:pointer;font-weight:700;padding:10px 0}
details p{color:var(--ink-2)}

.closing{background:var(--gold);border-top:2px solid var(--ink);padding-block:clamp(48px,7vw,80px);text-align:center}
.closing p{margin-top:10px}
.closing .cta-row{justify-content:center;margin-bottom:0}
.closing .button{box-shadow:3px 3px 0 var(--paper)}
.closing .button.ghost{box-shadow:3px 3px 0 var(--ink)}

.doc{padding-block:clamp(40px,6vw,72px)}
.doc h1{font-size:clamp(1.9rem,5vw,3rem);margin-bottom:18px}
.doc h2{font-size:1.4rem;margin:40px 0 10px;scroll-margin-top:84px}
.doc ul,.doc ol{padding-left:1.3em;margin-bottom:1em}
.doc li{margin:4px 0}
.doc .notice{max-width:none}
.meta{font-size:.92rem;color:var(--ink-2)}
.toc{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.94rem;margin-top:12px}
.qa{margin:0}
.qa div{border-top:2px solid var(--ink);padding:12px 0}
.qa dt{font-weight:700}
.qa dd{margin:2px 0 0;color:var(--ink-2)}
.notfound{text-align:center;min-height:50vh}
.notfound .cta-row{justify-content:center}

.site-footer{background:var(--ink);color:#F6F1E4;padding-block:44px 28px;font-size:.95rem}
.foot-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.site-footer h2{font-size:1rem;letter-spacing:0;margin-bottom:8px;color:var(--gold)}
.site-footer ul{list-style:none}
.site-footer li{padding:2px 0}
.copy{margin:28px 0 0;font-size:.86rem;color:#C8CFDB}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:900px){
  .hero-grid,.demo{grid-template-columns:minmax(0,1fr)}
  .need-grid{grid-template-columns:minmax(0,1fr)}
  .topology{grid-template-columns:minmax(0,1fr)}
  .links p{border:0;border-left:2px dashed var(--ink);text-align:left;padding:2px 0 2px 12px;margin-left:18px}
}
@media (max-width:640px){
  body{font-size:16px}
  .site-nav{order:3;width:100%;margin-left:0;gap:0 14px;font-size:.92rem}
  .pill{margin-left:auto}
  .steps,.feature-grid,.tamper,.limits,.foot-grid{grid-template-columns:minmax(0,1fr)}
  .status-list div{grid-template-columns:minmax(0,1fr)}
  .button{width:100%;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}