:root{color-scheme:light dark;--ph-bg:#f4f7fb;--ph-surface:#fff;--ph-text:#172033;--ph-muted:#5d6980;--ph-line:#dce4ef;--ph-accent:#2159c7;--ph-accent-soft:#eaf1ff;--ph-good:#0b7a53;--ph-warn:#9a5b00;--ph-shadow:0 16px 45px rgba(23,32,51,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ph-bg);color:var(--ph-text);font-family:Arial,"Noto Sans KR",sans-serif;line-height:1.65}a{color:inherit}.ph-shell{max-width:1180px;margin:0 auto;padding:0 22px}.ph-header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--ph-line);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}.ph-header__inner{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:18px}.ph-brand{font-weight:850;text-decoration:none;display:flex;gap:10px;align-items:center}.ph-brand__mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--ph-accent);color:#fff;font-size:13px}.ph-nav{display:flex;flex-wrap:wrap;gap:16px;font-size:14px}.ph-nav a{text-decoration:none;color:var(--ph-muted)}.ph-nav a:hover{color:var(--ph-accent)}.ph-hero{padding:54px 0 30px}.ph-hero__grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.75fr);gap:24px}.ph-card,.ph-hero__main,.ph-hero__aside{background:var(--ph-surface);border:1px solid var(--ph-line);border-radius:24px;box-shadow:var(--ph-shadow)}.ph-hero__main{padding:40px}.ph-eyebrow{display:inline-flex;border-radius:999px;background:var(--ph-accent-soft);color:var(--ph-accent);font-size:13px;font-weight:800;padding:7px 12px}.ph-hero h1{font-size:clamp(32px,5vw,52px);line-height:1.12;margin:18px 0 16px;letter-spacing:-.035em}.ph-lead{font-size:18px;color:var(--ph-muted);max-width:760px}.ph-proof{display:flex;flex-wrap:wrap;gap:9px;margin:24px 0 0;padding:0;list-style:none}.ph-proof li{background:#f7f9fc;border:1px solid var(--ph-line);border-radius:999px;padding:7px 11px;font-size:13px}.ph-hero__aside{padding:26px}.ph-hero__aside h2{margin:0 0 9px;font-size:20px}.ph-hero__aside p{margin:0;color:var(--ph-muted)}.ph-quick-check{display:grid;gap:10px;margin-top:18px}.ph-quick-check label{display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:12px;background:#f8fafc;font-size:14px}.ph-quick-check input{margin-top:5px}.ph-progress{height:10px;background:#e9eef5;border-radius:999px;overflow:hidden;margin-top:18px}.ph-progress span{display:block;height:100%;background:var(--ph-good);width:0;transition:width .25s}.ph-progress-text{font-size:13px;margin-top:8px;color:var(--ph-muted)}.ph-section{padding:24px 0 42px}.ph-section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px}.ph-section-head h2{font-size:30px;margin:0}.ph-section-head p{margin:5px 0 0;color:var(--ph-muted)}.ph-scenario-tabs{display:flex;gap:10px;overflow:auto;padding:2px 2px 12px}.ph-scenario-tabs button{white-space:nowrap;border:1px solid var(--ph-line);background:var(--ph-surface);color:var(--ph-text);border-radius:999px;padding:10px 15px;font-weight:750;cursor:pointer}.ph-scenario-tabs button[aria-selected="true"]{background:var(--ph-accent);color:#fff;border-color:var(--ph-accent)}.ph-workflow{padding:28px}.ph-workflow__head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:22px}.ph-workflow__head h3{margin:0 0 6px;font-size:25px}.ph-workflow__head p{margin:0;color:var(--ph-muted)}.ph-workflow__actions{display:flex;gap:8px;flex-wrap:wrap}.ph-button{border:1px solid var(--ph-line);background:var(--ph-surface);color:var(--ph-text);border-radius:12px;padding:10px 13px;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.ph-button[data-variant="primary"]{background:var(--ph-accent);border-color:var(--ph-accent);color:#fff}.ph-steps{display:grid;gap:13px}.ph-step{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:start;border:1px solid var(--ph-line);border-radius:18px;padding:17px;background:#fbfcfe}.ph-step__number{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--ph-accent-soft);color:var(--ph-accent);font-weight:900}.ph-step h4{margin:0 0 4px;font-size:17px}.ph-step p{margin:0;color:var(--ph-muted);font-size:14px}.ph-step__meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}.ph-badge{border:1px solid var(--ph-line);background:#fff;border-radius:999px;padding:4px 8px;font-size:11px;color:var(--ph-muted)}.ph-badge[data-kind="optional"]{background:#fff7e8;color:var(--ph-warn);border-color:#f3d9ad}.ph-step__open{align-self:center;text-decoration:none;background:var(--ph-accent);color:#fff;border-radius:11px;padding:9px 12px;font-size:13px;font-weight:800}.ph-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.ph-guide{padding:24px}.ph-guide h3{margin:0 0 10px}.ph-guide p,.ph-guide li{color:var(--ph-muted)}.ph-guide ol,.ph-guide ul{padding-left:22px}.ph-final{padding:28px}.ph-final-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.ph-final-list label{display:flex;gap:10px;border:1px solid var(--ph-line);background:#fbfcfe;padding:13px;border-radius:14px}.ph-faq{display:grid;gap:10px}.ph-faq details{background:var(--ph-surface);border:1px solid var(--ph-line);border-radius:14px;padding:15px 17px}.ph-faq summary{font-weight:800;cursor:pointer}.ph-faq p{color:var(--ph-muted);margin:10px 0 0}.ph-note{border-left:4px solid var(--ph-accent);background:var(--ph-accent-soft);border-radius:0 14px 14px 0;padding:16px 18px;color:#24426f}.ph-footer{border-top:1px solid var(--ph-line);padding:28px 0 45px;color:var(--ph-muted);font-size:14px}.ph-toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);opacity:0;background:#172033;color:#fff;padding:10px 15px;border-radius:999px;transition:.2s;z-index:40}.ph-toast[data-show="true"]{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:850px){.ph-hero__grid,.ph-grid{grid-template-columns:1fr}.ph-final-list{grid-template-columns:1fr}.ph-workflow__head{display:block}.ph-workflow__actions{margin-top:14px}.ph-step{grid-template-columns:auto 1fr}.ph-step__open{grid-column:2;justify-self:start}.ph-nav{display:none}}
@media(max-width:560px){.ph-shell{padding:0 14px}.ph-hero{padding-top:28px}.ph-hero__main,.ph-hero__aside,.ph-workflow,.ph-final{padding:20px;border-radius:18px}.ph-section-head h2{font-size:25px}.ph-hero h1{font-size:34px}.ph-lead{font-size:16px}}
@media(prefers-color-scheme:dark){:root{--ph-bg:#0f1420;--ph-surface:#171e2c;--ph-text:#edf3ff;--ph-muted:#aab6cb;--ph-line:#2c3749;--ph-accent:#78a7ff;--ph-accent-soft:#1d3153;--ph-shadow:none}.ph-header{background:rgba(15,20,32,.94)}.ph-proof li,.ph-quick-check label,.ph-step,.ph-final-list label,.ph-guide{background:#131a27}.ph-badge{background:#171e2c}}

/* AllFileOne brand mark */
.ph-brand__logo{display:block;width:34px;height:34px;border-radius:11px;box-shadow:0 4px 12px rgba(33,89,199,.14)}