@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.container{width:100%}@media (min-width:40rem){.container{max-width:40rem}}@media (min-width:48rem){.container{max-width:48rem}}@media (min-width:64rem){.container{max-width:64rem}}@media (min-width:80rem){.container{max-width:80rem}}@media (min-width:96rem){.container{max-width:96rem}}.block{display:block}.hidden{display:none}.inline{display:inline}.table{display:table}.grow{flex-grow:1}.rounded{border-radius:.25rem}.lowercase{text-transform:lowercase}}:root{--ink:#102a2e;--teal:#0f766e;--paper:#f5f7f4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);margin:0;font-family:Arial,Apple SD Gothic Neo,Noto Sans KR,sans-serif}.page-frame{flex-direction:column;min-height:100vh;display:flex}.grow{flex:1}.shell{width:min(1120px,100% - 40px);margin-inline:auto}.skip-link{z-index:99;background:#fff;padding:12px;position:fixed;top:-80px;left:12px}.skip-link:focus{top:12px}.site-header{z-index:30;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff2;border-bottom:1px solid #dbe3df;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;min-height:68px;display:flex}.brand{color:#102a2e;font-size:19px;font-weight:800;text-decoration:none}.brand span,.teal{color:var(--teal)}.desktop-nav,.footer-inner nav{gap:24px;display:flex}.desktop-nav a,.site-footer a{color:inherit;font-weight:650;text-decoration:none}.mobile-menu{display:none}.hero{color:#fff;background:linear-gradient(135deg,#102a2e,#123f43)}.hero-grid{grid-template-columns:1.25fr .75fr;align-items:center;gap:56px;padding-block:96px;display:grid}.eyebrow{letter-spacing:.12em;text-transform:uppercase;font-size:13px;font-weight:800}.hero h1{margin:18px 0;font-size:clamp(42px,6vw,68px);line-height:1.12}.hero-copy{color:#d6e5e3;max-width:680px;font-size:18px;line-height:1.8}.trust-panel{background:#ffffff12;border:1px solid #ffffff38;border-radius:18px;padding:28px}.trust-panel ul{padding-left:20px;line-height:1.8}.actions{flex-wrap:wrap;gap:12px;margin-top:30px;display:flex}.button{border-radius:9px;align-items:center;min-height:46px;padding:0 18px;font-weight:800;text-decoration:none;display:inline-flex}.primary{color:#082f2e;background:#5eead4}.secondary{color:#fff;border:1px solid #fff6}.section{padding-block:72px}.section h2,.notice h2,.prose-page h1{font-size:34px}.topic-grid,.post-grid{grid-template-columns:repeat(2,1fr);gap:18px;margin-top:30px;display:grid}.topic-card,.post-card,.empty-state{background:#fff;border:1px solid #dbe3df;border-radius:14px;padding:26px}.topic-card h3{font-size:21px}.topic-card p,.notice p,.prose-page p,.empty-state p{color:#526361;line-height:1.8}.notice{background:#fff;border-block:1px solid #dbe3df;padding-block:52px}.notice p{max-width:800px}.site-footer{color:#cbd9d7;background:#0b2427;padding-block:38px}.footer-inner{justify-content:space-between;gap:30px;display:flex}.footer-inner p{color:#9eb4b1;max-width:500px}.prose-page,.article{max-width:820px;padding-block:64px}.prose-page h2,.article h2{margin-top:42px}.text-link,.post-card a{color:var(--teal);font-weight:800}.article article{background:#fff;border:1px solid #dbe3df;border-radius:16px;padding:clamp(24px,5vw,54px)}.article h1{font-size:clamp(34px,5vw,52px)}.article p,.article li{color:#415452;line-height:1.85}.lead{font-size:19px}.empty-state{margin-top:30px}.empty-state h2{margin-top:0}@media (max-width:720px){.desktop-nav{display:none}.mobile-menu{display:block;position:relative}.mobile-menu summary{border:1px solid #cbd5d1;border-radius:9px;justify-content:center;align-items:center;width:44px;height:44px;list-style:none;display:flex}.mobile-menu nav{background:#fff;border:1px solid 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minmax(0,1.1fr);gap:24px;margin-top:28px;display:grid}.calculator-inputs{gap:14px;display:grid}.calculator-field{gap:7px;font-weight:750;display:grid}.input-shell{background:#fff;border:1px solid #aecbc6;border-radius:10px;align-items:center;display:flex;overflow:hidden}.input-shell:focus-within{outline-offset:2px;outline:3px solid #5eead466}.input-shell input{width:100%;min-width:0;height:48px;color:var(--ink);font:inherit;background:0 0;border:0;padding:0 12px}.input-shell input:focus{outline:0}.input-shell>span{color:#526361;padding-right:12px}.calculator-results{gap:12px;display:grid}.calculator-results>div:not(.calculation-details){background:#fff;border:1px solid #d3e5e1;border-radius:12px;grid-template-columns:1fr auto;gap:4px 14px;padding:16px;display:grid}.calculator-results strong{font-size:22px}.calculator-results small{color:#526361;text-align:right;grid-column:2}.positive{color:#0f766e}.negative{color:#b42318}.calculation-details{color:#fff;background:#102a2e;border-radius:12px;margin:0;padding:14px 16px}.calculation-details div{justify-content:space-between;gap:20px;display:flex}.calculation-details div+div{margin-top:8px}.calculation-details dd{margin:0;font-weight:800}.calculator-note{margin:18px 0 0;font-size:14px}.article code{color:#153d3a;background:#e7efed;border-radius:5px;padding:.18em .38em}.article a{color:var(--teal);text-underline-offset:3px}.article a:focus-visible,.reset-button:focus-visible{outline-offset:3px;outline:3px solid #0f766e}@media (max-width:720px){.calculator-heading{display:grid}.calculator-grid{grid-template-columns:1fr}.reset-button{justify-self:start}}