:root {
  --ink: #17202a;
  --muted: #65707d;
  --line: #dce1e7;
  --paper: #ffffff;
  --canvas: #f4f6f7;
  --accent: #087f6a;
  --accent-dark: #056451;
  --accent-pale: #e9f5f1;
  --blue-pale: #e8f1fb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: Pretendard, "Noto Sans KR", "Malgun Gothic", Arial, sans-serif;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }

.site-header {
  width: min(1180px, calc(100% - 40px));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 11px; font-size: 15px; font-weight: 760; }
.brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center; border-radius: 6px;
  background: var(--ink); color: white; font-size: 16px; font-weight: 850;
}
.header-meta { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 650; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #23a279; box-shadow: 0 0 0 4px #dff3eb; }

.hero {
  width: min(1180px, calc(100% - 40px)); min-height: calc(100vh - 72px); margin: 0 auto;
  padding: clamp(54px, 7vw, 92px) 0 72px; display: grid;
  grid-template-columns: minmax(350px, 0.82fr) minmax(520px, 1.18fr);
  align-items: center; gap: clamp(44px, 6vw, 84px);
}
.hero-copy { max-width: 505px; }
.eyebrow { margin: 0 0 20px; color: var(--accent); font-size: 12px; font-weight: 800; }
h1 { margin: 0; max-width: 480px; font-size: clamp(44px, 5vw, 68px); line-height: 1.03; font-weight: 820; letter-spacing: 0; }
.lede { margin: 25px 0 0; color: #4c5865; font-size: 18px; line-height: 1.72; word-break: keep-all; }
.hero-actions { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 10px; }
.button {
  min-height: 48px; padding: 0 18px; display: inline-flex; align-items: center; justify-content: center;
  gap: 9px; border: 1px solid transparent; border-radius: 6px; font-size: 14px; font-weight: 760;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}
.button:hover { transform: translateY(-1px); }
.button:focus-visible { outline: 3px solid rgba(8, 127, 106, 0.25); outline-offset: 2px; }
.button-primary { background: var(--accent); color: white; box-shadow: 0 8px 18px rgba(8, 127, 106, 0.18); }
.button-primary:hover { background: var(--accent-dark); }
.button-secondary { border-color: #cdd4dc; background: var(--paper); }
.button-secondary:hover { border-color: #aeb7c1; background: #f9fafb; }
.download-icon { font-size: 21px; line-height: 1; }
.release-facts { margin: 34px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.release-facts div { padding: 18px 12px 0 0; }
.release-facts dt { color: var(--muted); font-size: 11px; font-weight: 700; }
.release-facts dd { margin: 6px 0 0; font-size: 13px; font-weight: 760; }

.product-visual {
  position: relative; min-height: 485px; overflow: hidden; border: 1px solid #ccd3db;
  border-radius: 8px; background: var(--paper); box-shadow: 0 24px 54px rgba(42, 54, 66, 0.14);
}
.window-bar { height: 48px; display: flex; align-items: center; justify-content: space-between; padding-left: 17px; border-bottom: 1px solid #e1e5e9; }
.window-title { display: flex; align-items: center; gap: 9px; font-size: 12px; font-weight: 650; }
.folder-icon { width: 17px; height: 13px; position: relative; display: inline-block; border-radius: 2px; background: #e5ae38; }
.folder-icon::before { content: ''; width: 8px; height: 4px; position: absolute; top: -3px; left: 1px; border-radius: 2px 2px 0 0; background: #e5ae38; }
.window-controls { height: 100%; display: grid; grid-template-columns: repeat(3, 46px); }
.window-controls span { display: grid; place-items: center; color: #4f5964; font: 14px Arial, sans-serif; }
.explorer-toolbar { height: 56px; padding: 0 14px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid #e3e7eb; }
.tool-button { width: 30px; height: 30px; display: grid; place-items: center; color: #3d4650; font-size: 18px; }
.tool-button.muted { color: #b4bbc3; }
.path-bar { height: 34px; flex: 1; display: flex; align-items: center; padding: 0 13px; border: 1px solid #d9dee4; border-radius: 4px; color: #46515d; font-size: 11px; }
.file-area { min-height: 350px; padding: 12px 12px 70px; position: relative; }
.file-row { min-height: 40px; display: grid; grid-template-columns: 2.2fr 1.3fr 0.9fr 0.55fr; align-items: center; border-bottom: 1px solid #eef0f2; color: #56616c; font-size: 10px; }
.file-row > span { padding: 0 9px; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-heading { min-height: 30px; color: #69747f; }
.selected-file { border-bottom-color: #cfe2f8; background: var(--blue-pale); color: #24313e; }
.file-name { display: flex; align-items: center; gap: 8px; }
.image-file-icon { width: 24px; height: 24px; flex: 0 0 auto; position: relative; border-radius: 3px; background: linear-gradient(145deg, #bfe3d8 0 48%, #70a598 49% 100%); border: 1px solid #8ebcaf; }
.image-file-icon::after { content: ''; width: 5px; height: 5px; position: absolute; top: 4px; right: 4px; border-radius: 50%; background: white; }
.image-file-icon.alt { background: linear-gradient(145deg, #f0cf9e 0 48%, #b98654 49% 100%); border-color: #c99d6f; }
.context-menu { width: 210px; position: absolute; top: 102px; left: 31%; z-index: 2; padding: 6px; border: 1px solid #d5dbe1; border-radius: 7px; background: rgba(255, 255, 255, 0.98); box-shadow: 0 14px 34px rgba(36, 45, 55, 0.22); }
.context-menu > div:not(.menu-separator) { height: 34px; display: flex; align-items: center; gap: 10px; padding: 0 9px; border-radius: 4px; color: #39434e; font-size: 11px; }
.context-menu .convert-item { background: var(--accent-pale); color: #075f50; font-weight: 760; }
.menu-icon { width: 17px; height: 17px; display: grid; place-items: center; border: 1px solid #cfd6dd; border-radius: 4px; font-size: 9px; font-weight: 800; }
.convert-item .menu-icon { border-color: #9ccbbf; background: white; color: var(--accent); }
.menu-separator { height: 1px; margin: 5px 7px; background: #e4e8ec; }
.result-toast { position: absolute; right: 18px; bottom: 18px; z-index: 3; width: min(340px, calc(100% - 36px)); min-height: 68px; padding: 13px 16px; display: flex; align-items: center; gap: 11px; border: 1px solid #b9d9d0; border-radius: 7px; background: #f5fbf9; box-shadow: 0 12px 30px rgba(35, 63, 54, 0.12); color: #4d625c; font-size: 10px; line-height: 1.5; }
.result-toast strong { display: block; color: #163c32; font-size: 12px; }
.check { width: 28px; height: 28px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: white; font-weight: 850; }

.section-shell { width: min(1100px, calc(100% - 40px)); margin: 0 auto; }
.workflow { padding: 104px 0 110px; }
.section-heading { max-width: 630px; }
.section-kicker { margin: 0 0 12px; color: var(--accent); font-size: 12px; font-weight: 820; }
h2 { margin: 0; font-size: clamp(30px, 3.2vw, 42px); line-height: 1.2; font-weight: 800; letter-spacing: 0; word-break: keep-all; }
.section-heading > p:last-child, .feature-copy > p:last-child { margin: 17px 0 0; color: var(--muted); font-size: 16px; line-height: 1.75; word-break: keep-all; }
.workflow-grid { margin-top: 42px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.workflow-grid article { min-height: 250px; position: relative; padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.step-number { position: absolute; top: 24px; right: 24px; color: #9aa3ad; font-size: 11px; font-weight: 800; }
.step-symbol { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 7px; font-size: 21px; font-weight: 820; }
.installer-symbol { background: #e8f1fb; color: #2268a7; }
.pointer-symbol { background: #f8efd9; color: #95690c; }
.output-symbol { background: var(--accent-pale); color: var(--accent); font-size: 16px; }
.workflow-grid h3 { margin: 38px 0 0; font-size: 17px; font-weight: 800; }
.workflow-grid p { margin: 11px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; word-break: keep-all; }
.workflow-grid strong { color: #35404b; }
.windows-note { margin: 20px 0 0; padding-left: 4px; color: #6b7580; font-size: 12px; }
.windows-note strong { color: #4a5560; }

.feature-band { padding: 100px 0; background: #202a33; color: white; }
.feature-layout { display: grid; grid-template-columns: 0.9fr 1.1fr; align-items: start; gap: 100px; }
.feature-copy { position: sticky; top: 40px; }
.feature-copy .section-kicker { color: #75d7bd; }
.feature-copy > p:last-child { color: #b9c2ca; }
.feature-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid #47515a; }
.feature-list li { min-height: 104px; padding: 24px 0; display: grid; grid-template-columns: 30px 1fr; gap: 14px; border-bottom: 1px solid #47515a; }
.feature-list li > span { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: #dff6ef; color: #08705e; font-size: 12px; font-weight: 900; }
.feature-list strong { font-size: 15px; }
.feature-list p { margin: 6px 0 0; color: #aeb9c2; font-size: 13px; line-height: 1.6; }

.release-section { padding: 104px 0 84px; }
.release-panel { padding: 32px 0 46px; display: grid; grid-template-columns: 48px 1fr; gap: 24px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.release-panel h2 { max-width: 780px; font-size: clamp(24px, 2.6vw, 34px); }
.release-panel p:last-child { max-width: 780px; margin: 15px 0 0; color: var(--muted); font-size: 14px; line-height: 1.75; word-break: keep-all; }
.shield-symbol { width: 42px; height: 46px; display: grid; place-items: center; background: #fff3d9; color: #9b6b0b; clip-path: polygon(50% 0, 95% 16%, 88% 70%, 50% 100%, 12% 70%, 5% 16%); font-size: 18px; font-weight: 900; }
.bottom-cta { padding: 70px 0 10px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.bottom-cta h2 { font-size: clamp(28px, 3vw, 38px); }
.bottom-cta .button { flex: 0 0 auto; }
.site-footer { width: min(1180px, calc(100% - 40px)); min-height: 76px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); color: #727c86; font-size: 12px; }
.site-footer div { display: flex; gap: 14px; }
.footer-note { color: #46515c; font-weight: 720; }

@media (max-width: 930px) {
  .hero { grid-template-columns: 1fr; align-items: start; }
  .hero-copy { max-width: 680px; }
  .product-visual { min-height: 460px; }
  .workflow-grid { grid-template-columns: 1fr; }
  .workflow-grid article { min-height: 210px; }
  .feature-layout { grid-template-columns: 1fr; gap: 54px; }
  .feature-copy { position: static; }
}
@media (max-width: 560px) {
  .site-header, .hero { width: min(100% - 28px, 1180px); }
  .site-header { height: 64px; }
  .brand { font-size: 13px; }
  .header-meta { display: none; }
  .hero { min-height: auto; padding: 44px 0 52px; gap: 42px; }
  h1 { font-size: 42px; }
  .lede { font-size: 16px; }
  .button { width: 100%; }
  .release-facts { grid-template-columns: 1fr 1fr; }
  .release-facts div:last-child { display: none; }
  .product-visual { min-height: 390px; }
  .window-controls { grid-template-columns: repeat(3, 35px); }
  .explorer-toolbar { padding: 0 8px; }
  .tool-button:nth-child(2) { display: none; }
  .file-row { grid-template-columns: 1.7fr 1fr; }
  .file-row > span:nth-child(3), .file-row > span:nth-child(4) { display: none; }
  .context-menu { left: 18%; top: 100px; }
  .section-shell, .site-footer { width: min(100% - 28px, 1180px); }
  .workflow { padding: 76px 0 80px; }
  .workflow-grid article { min-height: 218px; padding: 24px; }
  .feature-band { padding: 76px 0; }
  .release-section { padding: 76px 0 64px; }
  .release-panel { grid-template-columns: 1fr; }
  .bottom-cta { align-items: stretch; flex-direction: column; }
  .bottom-cta .button { width: 100%; }
  .site-footer { padding: 22px 0; align-items: flex-start; flex-direction: column; gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}