@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@500;600;700&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');

:root {
  --ink: #172033;
  --muted: #647087;
  --line: #dfe4ec;
  --paper: #ffffff;
  --soft: #f4f6f9;
  --navy: #172a4b;
  --blue: #3867ff;
  --cyan: #30c4d9;
  --lime: #ccf54a;
  --orange: #ff9f43;
  --shadow: 0 24px 60px rgba(25, 39, 69, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans KR", sans-serif;
  line-height: 1.55;
}
button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 6vw;
  color: #fff;
  background: rgba(23, 42, 75, 0.96);
  backdrop-filter: blur(16px);
}
.brand { display: flex; align-items: center; gap: 12px; font: 700 18px "DM Sans", sans-serif; }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; object-fit: cover; box-shadow: 0 0 0 1px rgba(255,255,255,.15); }
.brand-mark { display: grid; grid-template-columns: repeat(3, 7px); align-items: end; gap: 3px; width: 27px; height: 28px; transform: skewY(-18deg); }
.brand-mark i { display: block; border-radius: 2px; background: var(--lime); }
.brand-mark i:nth-child(1) { height: 14px; }
.brand-mark i:nth-child(2) { height: 22px; }
.brand-mark i:nth-child(3) { height: 18px; }
.site-header nav { display: flex; align-items: center; gap: 22px; color: #d9e1ef; font-size: 14px; }
.site-header nav a:hover { color: var(--lime); }
.site-header nav a[aria-current="page"] { color: var(--lime); }
.language-link { padding: 6px 10px; border: 1px solid rgba(255,255,255,.3); border-radius: 7px; font: 700 11px "DM Sans", sans-serif; letter-spacing: .04em; }

.hero {
  min-height: 470px;
  padding: 58px 8vw 62px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: 8vw;
  color: #fff;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(61, 112, 255, .48), transparent 34%),
    linear-gradient(125deg, #12203b 0%, #1c335e 58%, #183c6b 100%);
}
.eyebrow { margin: 0 0 12px; color: var(--blue); font: 700 12px "DM Sans", sans-serif; letter-spacing: .16em; }
.hero .eyebrow { color: var(--lime); }
.hero h1 { margin: 0; font-size: clamp(40px, 5.2vw, 66px); line-height: 1.08; letter-spacing: -.045em; }
.hero h1 em { color: var(--lime); font-style: normal; }
.hero-copy { max-width: 600px; margin: 28px 0 36px; color: #d7e0ef; font-size: 17px; }
.hero-button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 26px; border-radius: 10px; color: #14213b; background: var(--lime); font-weight: 800; box-shadow: 0 10px 30px rgba(204, 245, 74, .18); }
.hero-button:hover { transform: translateY(-2px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-button-secondary { color: #fff; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.07); box-shadow: none; }

.model-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  min-height: 340px;
  align-content: center;
}
.model-hero-grid figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 18px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 24px 50px rgba(4,13,31,.25);
}
.model-hero-grid figure:first-child { grid-row: span 2; align-self: center; }
.model-hero-grid img { display: block; width: 100%; height: 100%; min-height: 150px; object-fit: contain; padding: 14px; }

.hero-visual { position: relative; min-height: 340px; }
.printer-frame {
  position: absolute;
  inset: 15px 7% 15px 8%;
  border: 18px solid rgba(230, 239, 255, .98);
  border-bottom-width: 36px;
  border-radius: 24px 24px 12px 12px;
  background: linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.02));
  box-shadow: 0 35px 80px rgba(4, 13, 31, .35), inset 0 0 0 2px rgba(255,255,255,.15);
}
.printer-frame::before { content: ""; position: absolute; top: 8px; left: 8%; right: 8%; height: 10px; border-radius: 5px; background: #9eb0cb; box-shadow: 0 5px 0 #3d5173; }
.printer-head { position: absolute; top: 30px; left: 48%; width: 82px; height: 64px; border-radius: 10px; background: #304667; box-shadow: 0 12px 0 #203551; }
.printer-head::after { content: ""; position: absolute; left: 33px; bottom: -28px; width: 16px; height: 28px; clip-path: polygon(15% 0,85% 0,65% 100%,35% 100%); background: var(--orange); }
.printer-head span { position: absolute; top: 17px; left: 18px; width: 11px; height: 11px; border-radius: 50%; background: var(--lime); box-shadow: 22px 0 0 #8595ae; }
.printer-bed { position: absolute; left: 11%; right: 11%; bottom: 42px; height: 22px; border-radius: 5px; background: #a9b8cf; transform: perspective(200px) rotateX(8deg); box-shadow: 0 13px 0 #354a6b; }
.printed-part { position: absolute; z-index: 2; left: 39%; bottom: 65px; width: 108px; height: 100px; }
.printed-part i { position: absolute; left: 0; bottom: 0; width: 108px; height: 30px; border-radius: 4px; background: var(--cyan); }
.printed-part i:nth-child(2) { left: 16px; bottom: 29px; width: 76px; }
.printed-part i:nth-child(3) { left: 31px; bottom: 58px; width: 46px; height: 42px; border-radius: 4px 4px 0 0; }
.floating-card { position: absolute; z-index: 3; display: flex; flex-direction: column; padding: 14px 18px; min-width: 124px; border: 1px solid rgba(255,255,255,.42); border-radius: 14px; color: var(--ink); background: rgba(255,255,255,.92); box-shadow: 0 18px 35px rgba(3,13,32,.24); backdrop-filter: blur(8px); }
.floating-card b { font: 700 22px "DM Sans", sans-serif; }
.floating-card span { color: var(--muted); font-size: 12px; }
.card-hours { top: 1px; right: 0; }
.card-weight { bottom: 18px; left: 0; }

.calculator-shell { padding: 92px 6vw 110px; background: var(--soft); }
.section-intro { max-width: 720px; margin: 0 auto 42px; text-align: center; }
.section-intro h2 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 46px); letter-spacing: -.035em; }
.section-intro > p:last-child { margin: 0; color: var(--muted); }
.calculator-grid { max-width: 1260px; margin: 0 auto; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(340px, .75fr); gap: 26px; align-items: start; }
.input-panel, .result-panel { border: 1px solid var(--line); border-radius: 20px; background: var(--paper); box-shadow: 0 16px 44px rgba(25, 39, 69, .07); }
.input-panel { overflow: hidden; }
.form-toolbar { display: flex; justify-content: space-between; align-items: center; min-height: 58px; padding: 0 28px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.form-toolbar button { border: 0; color: var(--blue); background: transparent; cursor: pointer; font-weight: 700; }
.inline-select { flex-direction: row; align-items: center; gap: 9px; color: var(--muted); font-size: 12px; }
.inline-select select { min-height: 34px; padding: 0 26px 0 9px; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); background: #fff; }
fieldset { margin: 0; padding: 28px; border: 0; border-bottom: 1px solid var(--line); }
legend { width: 100%; padding: 0; margin-bottom: 22px; font-size: 18px; font-weight: 800; }
legend span { display: inline-grid; place-items: center; width: 31px; height: 31px; margin-right: 9px; border-radius: 9px; color: #fff; background: var(--navy); font: 700 12px "DM Sans", sans-serif; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
label { display: flex; flex-direction: column; gap: 8px; color: #344057; font-size: 14px; font-weight: 700; }
label > span { display: flex; justify-content: space-between; }
label small { color: #8a94a8; font-weight: 500; }
input { width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid #cfd6e2; border-radius: 10px; color: var(--ink); background: #fbfcfe; outline: none; font: 600 16px "DM Sans", "Noto Sans KR", sans-serif; }
input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(56,103,255,.12); background: #fff; }
.wide-field { grid-column: 1 / -1; }
.hint { margin-top: -2px; }
.error-box { margin: 20px 28px; padding: 12px 15px; border-radius: 10px; color: #a61e27; background: #fff0f1; font-size: 13px; }
.error-box p { margin: 3px 0; }
.mobile-result-button { display: none; }

.result-panel { position: sticky; top: 94px; padding: 28px; color: #fff; border: 0; background: var(--navy); box-shadow: var(--shadow); }
.result-heading { display: flex; align-items: flex-start; justify-content: space-between; }
.result-heading > div { display: flex; flex-direction: column; }
.result-heading span { color: #cbd5e6; font-size: 14px; }
.result-heading small { margin-top: 3px; color: #889bb8; }
.live-badge { padding: 5px 8px; border: 1px solid rgba(204,245,74,.35); border-radius: 6px; color: var(--lime) !important; font: 700 10px "DM Sans", sans-serif; letter-spacing: .12em; }
.total-price { display: block; margin: 10px 0 2px; color: var(--lime); font: 700 clamp(42px, 5vw, 58px) "DM Sans", "Noto Sans KR", sans-serif; letter-spacing: -.04em; }
.result-subline { display: flex; justify-content: space-between; color: #aebbd0; font-size: 12px; }
.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 25px 0; }
.metric-grid div { padding: 13px 14px; border: 1px solid rgba(255,255,255,.11); border-radius: 10px; background: rgba(255,255,255,.045); }
.metric-grid span { display: block; margin-bottom: 4px; color: #9aaac2; font-size: 11px; }
.metric-grid b { font: 600 15px "DM Sans", "Noto Sans KR", sans-serif; }
.chart-wrap { margin-bottom: 20px; }
.chart-label { display: flex; justify-content: space-between; margin-bottom: 8px; color: #9aaac2; font-size: 11px; }
.cost-chart { display: flex; height: 10px; overflow: hidden; border-radius: 10px; background: rgba(255,255,255,.1); }
.chart-segment { min-width: 2px; }
.breakdown-wrap { max-height: 275px; overflow: auto; padding-right: 4px; }
table { width: 100%; border-collapse: collapse; }
caption { padding-bottom: 8px; color: #cbd5e6; text-align: left; font-size: 12px; font-weight: 700; }
th, td { padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 12px; }
th { color: #aebbd0; text-align: left; font-weight: 500; }
td { text-align: right; font: 600 12px "DM Sans", "Noto Sans KR", sans-serif; }
.swatch { display: inline-block; width: 7px; height: 7px; margin-right: 8px; border-radius: 2px; background: var(--swatch); }
.monthly-card { margin-top: 18px; padding: 15px; border-radius: 12px; color: var(--ink); background: #eef4ff; }
.monthly-card > span { display: block; margin-bottom: 7px; color: #5c6980; font-size: 11px; font-weight: 700; }
.monthly-card div { display: flex; justify-content: space-between; margin-top: 5px; font-size: 12px; }
.monthly-card b { font-family: "DM Sans", "Noto Sans KR", sans-serif; }
.result-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 16px; }
.result-actions button { min-height: 42px; border: 1px solid rgba(255,255,255,.2); border-radius: 9px; color: #fff; background: transparent; cursor: pointer; font-weight: 700; }
.result-actions button:first-child { color: var(--navy); border-color: var(--lime); background: var(--lime); }
.copy-status { min-height: 18px; margin: 8px 0 0; color: var(--lime); text-align: center; font-size: 11px; }
.result-note { margin: 6px 0 0; color: #8293ae; font-size: 10px; text-align: center; }

.guide-section, .faq-section { padding: 100px 7vw; }
.guide-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.guide-grid article { padding: 28px 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.guide-grid article > span { color: var(--blue); font: 700 12px "DM Sans", sans-serif; }
.guide-grid h3 { margin: 14px 0 10px; font-size: 18px; }
.guide-grid p { margin: 0; color: var(--muted); font-size: 15px; }
.formula-card { max-width: 1180px; margin: 18px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; padding: 30px; border-radius: 16px; color: #fff; background: var(--navy); }
.formula-card div { display: flex; flex-direction: column; }
.formula-card span { color: var(--lime); font-size: 11px; font-weight: 700; }
.formula-card strong { margin-top: 7px; font-size: 19px; }
.formula-card p { margin: 0; color: #aebbd0; font-size: 13px; }
.faq-section { background: var(--soft); }
.faq-list { max-width: 850px; margin: 0 auto; border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { padding: 21px 5px; cursor: pointer; font-weight: 700; }
details p { margin: -6px 0 22px; color: var(--muted); font-size: 15px; }

.resource-section { padding: 100px 7vw; background: #fff; }
.resource-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.resource-card { display: flex; flex-direction: column; min-height: 245px; padding: 26px 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
.resource-card:hover { transform: translateY(-4px); box-shadow: 0 18px 38px rgba(25,39,69,.1); }
.resource-card > span { color: var(--blue); font: 700 12px "DM Sans", sans-serif; }
.resource-card h3 { margin: 18px 0 10px; font-size: 19px; }
.resource-card p { flex: 1; margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.resource-card b { color: var(--blue); font-size: 13px; }

.content-page { min-height: 80vh; padding-bottom: 100px; background: var(--soft); }
.article-hero { padding: 94px 8vw 86px; color: #fff; background: radial-gradient(circle at 88% 10%, rgba(56,103,255,.5), transparent 31%), linear-gradient(125deg,#12203b,#1c335e 62%,#183c6b); }
.article-hero > div { max-width: 1020px; margin: 0 auto; }
.article-hero h1 { max-width: 850px; margin: 0; font-size: clamp(40px, 5.2vw, 68px); line-height: 1.12; letter-spacing: -.045em; }
.article-hero > div > p:not(.eyebrow) { max-width: 760px; margin: 26px 0 0; color: #d7e0ef; font-size: 17px; }
.article-meta { display: flex; gap: 18px; margin-top: 28px; color: #9fb0ca; font-size: 12px; }
.compact-hero { background: radial-gradient(circle at 15% 5%, rgba(48,196,217,.3), transparent 28%), linear-gradient(125deg,#13253f,#16485d); }
.example-hero { background: radial-gradient(circle at 88% 5%, rgba(204,245,74,.25), transparent 30%), linear-gradient(125deg,#17203a,#293b63); }
.article-layout { max-width: 1180px; margin: -34px auto 0; padding: 0 24px; display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 24px; align-items: start; }
.wide-article { max-width: 1040px; margin: -34px auto 0; padding: 0 24px; }
.article-toc { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 10px; padding: 22px; border: 1px solid var(--line); border-radius: 15px; background: #fff; box-shadow: 0 12px 30px rgba(25,39,69,.06); }
.article-toc strong { margin-bottom: 5px; font-size: 13px; }
.article-toc a { color: var(--muted); font-size: 12px; }
.article-toc a:hover { color: var(--blue); }
.article-card { padding: clamp(28px,5vw,66px); border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 20px 50px rgba(25,39,69,.08); }
.prose section { scroll-margin-top: 100px; }
.prose section + section { margin-top: 60px; padding-top: 52px; border-top: 1px solid var(--line); }
.prose h2 { margin: 0 0 18px; font-size: clamp(25px,3.2vw,35px); line-height: 1.25; letter-spacing: -.03em; }
.prose h3 { margin: 30px 0 12px; font-size: 20px; }
.prose p { color: #566279; font-size: 16px; line-height: 1.85; }
.prose strong { color: var(--ink); }
.kicker { margin: 0 0 10px !important; color: var(--blue) !important; font: 700 11px "DM Sans", sans-serif !important; letter-spacing: .14em; }
.callout { margin: 26px 0; padding: 22px 24px; border-left: 4px solid var(--cyan); border-radius: 0 12px 12px 0; background: #effafd; }
.callout p { margin: 7px 0 0; font-size: 14px; }
.formula-box { margin: 25px 0; padding: 22px 24px; border-radius: 13px; color: #fff; background: var(--navy); }
.formula-box span, .formula-box small { display: block; color: #aebbd0; font-size: 11px; }
.formula-box code { display: block; margin: 8px 0; color: var(--lime); white-space: normal; font: 700 17px "DM Sans", "Noto Sans KR", sans-serif; }
.check-list { margin: 22px 0; padding: 0; display: grid; gap: 10px; list-style: none; }
.check-list li { position: relative; padding: 13px 16px 13px 42px; border: 1px solid var(--line); border-radius: 10px; color: #4c5870; font-size: 14px; }
.check-list li::before { content: ""; position: absolute; left: 16px; top: 17px; width: 12px; height: 7px; border-left: 2px solid var(--blue); border-bottom: 2px solid var(--blue); transform: rotate(-45deg); }
.two-column-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.article-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.primary-link, .secondary-link { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border-radius: 9px; font-size: 14px; font-weight: 800; }
.primary-link { color: #fff; background: var(--blue); }
.secondary-link { border: 1px solid var(--line); color: var(--blue); background: #fff; }
.table-scroll { margin: 24px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.content-table { min-width: 680px; color: var(--ink); background: #fff; }
.content-table th, .content-table td { padding: 14px 16px; border: 0; border-bottom: 1px solid var(--line); color: #536078; text-align: left; font: 500 13px "Noto Sans KR", sans-serif; vertical-align: top; }
.content-table thead th { color: var(--ink); background: #eef2f8; font-weight: 800; }
.content-table tbody tr:last-child th, .content-table tbody tr:last-child td { border-bottom: 0; }
.content-table tbody th { color: var(--ink); background: #f8f9fb; font-weight: 700; }
.compact-table th { white-space: nowrap; }
.table-wrap { margin: 24px 0; overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
.table-wrap table { min-width: 620px; }
.table-wrap th, .table-wrap td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: #536078; text-align: left; vertical-align: top; }
.table-wrap thead th { color: var(--ink); background: #eef2f8; }
.table-wrap tbody tr:last-child td { border-bottom: 0; }
.highlight-row td { color: var(--ink); background: #f3f8df; font-weight: 700; }
.info-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin: 24px 0; }
.info-grid > div { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfe; }
.info-grid p { margin: 8px 0 0; font-size: 13px; line-height: 1.65; }

/* Original CAD practice gallery */
.cad-practice-hero {
  background:
    radial-gradient(circle at 82% 18%, rgba(204,245,74,.18), transparent 24%),
    radial-gradient(circle at 92% 4%, rgba(56,103,255,.52), transparent 34%),
    linear-gradient(125deg,#12203b,#1c335e 62%,#183c6b);
}
.cad-article-wrap { display: grid; gap: 28px; }
.cad-intro-card, .cad-analysis-card { margin: 0; }
.cad-project-list { display: grid; gap: 28px; }
.cad-project-card {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow);
}
.cad-project-card-reverse .cad-project-media { order: 2; }
.cad-project-media {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 430px;
  margin: 0;
  padding: 30px 30px 18px;
  background: linear-gradient(145deg,#f8fafc,#eef2f7);
  border-right: 1px solid var(--line);
}
.cad-project-card-reverse .cad-project-media { border-right: 0; border-left: 1px solid var(--line); }
.cad-project-media img { display: block; width: 100%; max-height: 420px; object-fit: contain; }
.cad-project-media figcaption { margin-top: 14px; color: var(--muted); font-size: 12px; text-align: center; }
.cad-project-copy { padding: 46px 42px; }
.project-number { margin: 0 0 8px; color: var(--blue); font: 700 12px "DM Sans",sans-serif; letter-spacing: .16em; }
.cad-project-copy h2 { margin: 0; font: 700 clamp(28px,3vw,38px) "DM Sans",sans-serif; line-height: 1.12; letter-spacing: -.035em; }
.project-subtitle { margin: 9px 0 24px; color: var(--muted); font-weight: 600; }
.project-facts { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin: 0 0 26px; }
.project-facts div { padding: 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); }
.project-facts dt { color: var(--muted); font-size: 11px; }
.project-facts dd { margin: 4px 0 0; font-size: 13px; font-weight: 700; }
.cad-project-copy > p:not(.project-number):not(.project-subtitle) { color: #4e5b70; font-size: 15px; line-height: 1.75; }
.cad-project-copy h3 { margin: 28px 0 10px; font-size: 16px; }
.compact-list { margin: 0; padding-left: 20px; color: #4e5b70; font-size: 14px; line-height: 1.75; }
.cad-formula { margin-top: 22px; }
.cad-showcase-section { padding: 80px 8vw; background: #f6f8fb; }
.cad-showcase-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; max-width: 1180px; margin: 0 auto; }
.cad-showcase-card { overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 16px 40px rgba(25,39,69,.08); }
.cad-showcase-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; padding: 18px; background: #f4f6f9; }
.cad-showcase-card div { padding: 20px; }
.cad-showcase-card span { color: var(--blue); font: 700 11px "DM Sans",sans-serif; letter-spacing: .12em; }
.cad-showcase-card h3 { margin: 8px 0 7px; font-size: 18px; }
.cad-showcase-card p { margin: 0; color: var(--muted); font-size: 13px; }
.cad-showcase-card .model-price { display: block; margin: 14px 0 0; color: var(--ink); font: 700 16px "DM Sans",sans-serif; letter-spacing: 0; }
.model-buy-link { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; margin-top: 18px; padding: 0 17px; border-radius: 8px; color: #fff; background: var(--blue); font-size: 13px; font-weight: 800; }
.model-buy-link:hover { background: #244fe0; }
.storefront-section { padding-top: 92px; padding-bottom: 92px; background: #fff; }
.storefront-note { max-width: 850px; margin: 26px auto 0; color: var(--muted); text-align: center; font-size: 13px; }
.storefront-note a { color: var(--blue); font-weight: 800; }
.cad-showcase-action { max-width: 1180px; margin: 24px auto 0; text-align: right; }
.cad-showcase-action a { display: inline-flex; padding: 12px 18px; border-radius: 9px; color: #fff; background: var(--navy); font-weight: 700; }
.calculation-steps { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin: 24px 0; }
.calculation-steps > div { padding: 20px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcfe; }
.calculation-steps span { color: var(--blue); font-size: 12px; font-weight: 800; }
.calculation-steps p { margin: 7px 0; font-size: 13px; line-height: 1.55; }
.calculation-steps strong { display: block; font: 700 19px "DM Sans", "Noto Sans KR", sans-serif; }
.result-callout { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; padding: 20px 24px; border-radius: 12px; color: #fff; background: var(--navy); }
.result-callout strong { color: var(--lime); font-size: 24px; }
.price-flow { display: grid; gap: 8px; margin: 25px 0; }
.price-flow > div { display: flex; align-items: center; justify-content: space-between; padding: 15px 18px; border: 1px solid var(--line); border-radius: 10px; color: #566279; }
.price-flow strong { font-family: "DM Sans", "Noto Sans KR", sans-serif; }
.price-flow .final-price { color: #fff; border-color: var(--navy); background: var(--navy); }
.price-flow .final-price strong { color: var(--lime); font-size: 24px; }

.tools-page { min-height: 80vh; padding: 78px 6vw 110px; background: var(--soft); }
.tools-heading { max-width: 850px; margin: 0 auto 45px; text-align: center; }
.tools-heading h1 { margin: 0 0 16px; font-size: clamp(36px,5vw,58px); letter-spacing: -.045em; }
.tools-heading p { color: var(--muted); }
.tools-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; align-items: start; }
.tool-card { padding: 26px; border: 1px solid var(--line); border-radius: 17px; background: #fff; box-shadow: 0 14px 35px rgba(25,39,69,.06); }
.tool-card h2 { margin: 10px 0 8px; font-size: 21px; }
.tool-card > p { margin: 0 0 22px; min-height: 66px; color: var(--muted); font-size: 14px; }
.tool-form { display: grid; gap: 13px; }
.tool-form label { gap: 6px; font-size: 14px; }
.tool-form input, .tool-form select { min-height: 44px; padding: 0 12px; border: 1px solid #cfd6e2; border-radius: 9px; background: #fbfcfe; }
.tool-result { margin-top: 20px; padding: 18px; border-radius: 11px; color: #fff; background: var(--navy); }
.tool-result span { display: block; color: #aebbd0; font-size: 11px; }
.tool-result strong { display: block; margin: 4px 0; color: var(--lime); font: 700 28px "DM Sans", "Noto Sans KR", sans-serif; }
.tool-result small { color: #c4cede; }
.tool-note { max-width: 1180px; margin: 22px auto 0; padding: 20px 22px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); background: #fff; font-size: 13px; }

footer { display: flex; justify-content: space-between; gap: 30px; padding: 34px 7vw; color: #b3bfd2; background: #101b30; font-size: 12px; }
footer div { display: flex; flex-direction: column; gap: 5px; }
footer strong { color: #fff; font: 700 16px "DM Sans", sans-serif; }
footer a { color: var(--lime); }
.footer-links { flex-direction: row; flex-wrap: wrap; align-content: flex-start; gap: 7px 16px; max-width: 460px; }

.privacy-page { min-height: 100vh; padding: 70px 6vw; background: var(--soft); }
.privacy-card { max-width: 820px; margin: 0 auto; padding: 40px; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: var(--shadow); }
.privacy-card h1 { margin-top: 8px; }
.privacy-card h2 { margin-top: 30px; font-size: 18px; }
.privacy-card p, .privacy-card li { color: var(--muted); font-size: 14px; }
.back-link { color: var(--blue); font-weight: 700; }

@media (max-width: 980px) {
  .site-header { padding: 12px 4vw; flex-wrap: wrap; gap: 8px; }
  .site-header nav { width: 100%; gap: 16px; overflow-x: auto; padding-bottom: 3px; white-space: nowrap; scrollbar-width: none; }
  .site-header nav::-webkit-scrollbar { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 72px; }
  .hero-visual { min-height: 330px; max-width: 570px; width: 100%; margin: 0 auto; }
  .calculator-grid { grid-template-columns: 1fr; }
  .result-panel { position: static; }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .resource-grid { grid-template-columns: repeat(2,1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .article-toc { position: static; display: grid; grid-template-columns: repeat(3,1fr); }
  .tools-grid { grid-template-columns: 1fr; max-width: 720px; }
  .tool-card > p { min-height: auto; }
}

@media (max-width: 640px) {
  .brand { font-size: 15px; }
  .brand-logo { width: 34px; height: 34px; border-radius: 9px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions a { width: 100%; }
  .model-hero-grid { min-height: auto; grid-template-columns: 1fr 1fr; }
  .model-hero-grid figure:first-child { grid-column: 1 / -1; grid-row: auto; }
  .site-header { position: static; min-height: 62px; padding: 13px 18px; flex-wrap: wrap; gap: 10px; }
  .site-header nav { width: 100%; gap: 16px; overflow-x: auto; padding: 4px 0 2px; white-space: nowrap; scrollbar-width: none; }
  .site-header nav::-webkit-scrollbar { display: none; }
  .site-header nav a { font-size: 12px; }
  .hero { min-height: auto; padding: 62px 22px 66px; }
  .hero h1 { font-size: 42px; }
  .hero-copy { font-size: 15px; }
  .hero-visual { min-height: 285px; }
  .printer-frame { border-width: 13px; border-bottom-width: 29px; }
  .calculator-shell { padding: 68px 14px 76px; }
  .section-intro { margin-bottom: 28px; }
  .section-intro h2 { font-size: 31px; }
  .form-toolbar { padding: 0 18px; }
  fieldset { padding: 24px 18px; }
  .field-grid { grid-template-columns: 1fr; gap: 15px; }
  .wide-field { grid-column: auto; }
  .mobile-result-button { display: block; width: calc(100% - 36px); min-height: 48px; margin: 20px 18px; border: 0; border-radius: 10px; color: var(--navy); background: var(--lime); font-weight: 800; }
  .result-panel { padding: 24px 19px; border-radius: 16px; }
  .total-price { font-size: 48px; }
  .guide-section, .faq-section, .resource-section { padding: 74px 20px; }
  .guide-grid { grid-template-columns: 1fr; }
  .resource-grid { grid-template-columns: 1fr; }
  .formula-card { grid-template-columns: 1fr; padding: 24px; }
  .article-hero { padding: 65px 22px 72px; }
  .article-hero h1 { font-size: 38px; }
  .article-hero > div > p:not(.eyebrow) { font-size: 15px; }
  .article-layout, .wide-article { margin-top: -24px; padding: 0 12px; }
  .article-toc { grid-template-columns: 1fr 1fr; padding: 18px; }
  .article-card { padding: 28px 20px; border-radius: 15px; }
  .prose section + section { margin-top: 44px; padding-top: 38px; }
  .two-column-list, .info-grid, .calculation-steps { grid-template-columns: 1fr; }
  .result-callout { align-items: flex-start; flex-direction: column; gap: 5px; }
  .tools-page { padding: 62px 14px 80px; }
  footer { flex-direction: column; padding: 30px 22px; }
  .footer-links { flex-direction: row; }
  .privacy-card { padding: 26px 20px; }
  .cad-project-card { grid-template-columns: 1fr; }
  .cad-project-card-reverse .cad-project-media { order: 0; }
  .cad-project-media, .cad-project-card-reverse .cad-project-media { min-height: auto; padding: 18px 16px 12px; border: 0; border-bottom: 1px solid var(--line); }
  .cad-project-media img { max-height: 320px; }
  .cad-project-copy { padding: 30px 20px 34px; }
  .project-facts { grid-template-columns: 1fr; }
  .cad-showcase-section { padding: 68px 20px; }
  .cad-showcase-grid { grid-template-columns: 1fr; }
  .cad-showcase-action { text-align: left; }
}

@media print {
  .site-header, .hero, .section-intro, .input-panel, .guide-section, .faq-section, footer, .result-actions, .copy-status { display: none !important; }
  body, .calculator-shell { background: #fff; }
  .calculator-shell { padding: 0; }
  .calculator-grid { display: block; }
  .result-panel { position: static; max-width: 700px; margin: 0 auto; color: #111; background: #fff; box-shadow: none; border: 1px solid #ccc; }
  .result-panel * { color: #111 !important; }
  .metric-grid div, .monthly-card { border: 1px solid #ddd; background: #fff; }
  th, td { border-bottom-color: #ddd; }
}