:root {
  --ink: #071012;
  --ink-2: #101c20;
  --muted: #657173;
  --line: #dde6e8;
  --paper: #f7faf9;
  --white: #ffffff;
  --cyan: #16d9ff;
  --lime: #b8ff3d;
  --coral: #ff5c4a;
  --yellow: #ffd33d;
  --shadow: 0 26px 70px rgba(0, 0, 0, .24);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  letter-spacing: 0;
}

a { color: inherit; text-decoration: none; }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 clamp(18px, 4vw, 54px);
  color: var(--white);
  background: rgba(6, 16, 18, .78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 22px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: #061012;
  background: var(--lime);
  border-radius: 7px;
  font-weight: 900;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: rgba(255,255,255,.82);
}

.header-cta {
  padding: 11px 16px;
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  font-weight: 800;
  font-size: 14px;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  align-items: center;
  gap: 34px;
  padding: 112px clamp(18px, 5vw, 72px) 64px;
  color: var(--white);
  overflow: hidden;
  background: #061012;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("../images/hero-realistic.jpg");
  background-size: cover;
  background-position: center;
  opacity: .72;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(3,8,9,.96) 0%, rgba(3,8,9,.82) 38%, rgba(3,8,9,.32) 100%),
    linear-gradient(180deg, rgba(3,8,9,.12) 0%, rgba(3,8,9,.88) 100%);
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.eyebrow,
.label {
  color: var(--lime);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  margin: 14px 0 0;
  font-size: clamp(62px, 11vw, 146px);
  line-height: .86;
  font-weight: 900;
}

.hero-copy {
  max-width: 720px;
  margin: 28px 0 0;
  font-size: clamp(20px, 2.4vw, 34px);
  line-height: 1.28;
  font-weight: 800;
}

.hero-actions {
  display: flex;
  gap: 10px;
  margin-top: 34px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 7px;
  border: 1px solid transparent;
  font-weight: 900;
  cursor: pointer;
}

.btn-primary {
  background: var(--lime);
  color: #071012;
}

.btn-secondary {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.28);
  color: var(--white);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  max-width: 720px;
}

.hero-proof span {
  padding: 8px 10px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 6px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.88);
  font-size: 13px;
  font-weight: 700;
}

.hero-panel {
  padding: 24px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.panel-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  color: rgba(255,255,255,.72);
  border-bottom: 1px solid rgba(255,255,255,.18);
  padding-bottom: 16px;
}

.panel-top strong { color: var(--lime); }

.price-stack { display: grid; gap: 12px; margin-top: 18px; }

.price-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px;
  border-radius: 8px;
  background: rgba(255,255,255,.09);
}

.price-line.hot {
  color: var(--ink);
  background: var(--lime);
}

.price-line span { font-weight: 800; }
.price-line strong { font-size: 34px; font-weight: 900; }

.mini-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}

.mini-metrics div {
  padding: 12px 8px;
  background: rgba(0,0,0,.25);
  border-radius: 6px;
  text-align: center;
}

.mini-metrics b { display: block; color: var(--cyan); font-size: 20px; }
.mini-metrics span { display: block; margin-top: 3px; font-size: 11px; color: rgba(255,255,255,.72); }

.ticker {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  background: var(--lime);
  color: var(--ink);
  font-weight: 900;
  font-size: 14px;
}

.ticker div {
  padding: 18px 16px;
  border-right: 1px solid rgba(7,16,18,.18);
  text-align: center;
}

.section {
  padding: clamp(68px, 8vw, 112px) clamp(18px, 5vw, 72px);
}

.section-head {
  max-width: 820px;
  margin-bottom: 34px;
}

.section h2 {
  margin: 8px 0 0;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.02;
  font-weight: 900;
}

.section-head p:not(.label),
.trust-copy p,
.contact-copy p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 14px;
}

.price-card {
  min-height: 300px;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(7,16,18,.08);
}

.price-card.primary {
  background: var(--ink);
  color: var(--white);
}

.tag {
  display: inline-block;
  padding: 7px 10px;
  border-radius: 5px;
  background: #e8f4f2;
  color: var(--ink);
  font-size: 12px;
  font-weight: 900;
}

.primary .tag { background: var(--lime); }

.price-card h3 {
  margin: 22px 0 0;
  font-size: 28px;
}

.big-price {
  margin-top: 16px;
  font-size: clamp(50px, 7vw, 82px);
  line-height: 1;
  font-weight: 900;
}

.big-price span {
  font-size: 22px;
  margin-left: 4px;
}

.price-card p {
  margin-top: 18px;
  color: inherit;
  opacity: .78;
  line-height: 1.55;
}

.rate-table {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 16px 44px rgba(7,16,18,.08);
}

.rate-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  border-bottom: 1px solid var(--line);
}

.rate-row:last-child {
  border-bottom: 0;
}

.rate-row span,
.rate-row strong {
  padding: 16px 18px;
  border-right: 1px solid var(--line);
  text-align: center;
}

.rate-row span:first-child {
  text-align: left;
  font-weight: 800;
}

.rate-row strong {
  color: var(--ink);
  font-size: 20px;
}

.rate-row .head,
.rate-row.head {
  background: #e8f4f2;
  font-weight: 900;
}

.rate-row.highlight {
  background: #f5ffe1;
}

.rate-row.highlight strong {
  color: #1d5c00;
}

.policy-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 14px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
}

.policy-strip div {
  padding: 20px;
  border-right: 1px solid var(--line);
}

.policy-strip strong,
.policy-strip span { display: block; }

.policy-strip span {
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.45;
}

.volume-section {
  padding-top: 0;
}

.volume-panel {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 18px;
  padding: 30px;
  background: #0a1518;
  color: var(--white);
  border-radius: 8px;
}

.volume-panel h2 {
  margin: 8px 0 0;
  font-size: clamp(32px, 4vw, 52px);
}

.volume-panel p {
  color: rgba(255,255,255,.72);
  line-height: 1.6;
}

.volume-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.volume-tier {
  display: block;
  padding: 18px 14px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 8px;
  color: inherit;
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.volume-tier:hover,
.volume-tier:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(184,255,61,.7);
  background: rgba(184,255,61,.12);
  outline: none;
}

.volume-tier b {
  display: block;
  font-size: 24px;
  color: var(--lime);
}

.volume-tier span {
  display: block;
  margin-top: 8px;
  color: rgba(255,255,255,.76);
  font-size: 13px;
  line-height: 1.4;
}

.trust-section {
  display: grid;
  grid-template-columns: .85fr .75fr 1fr;
  gap: 36px;
  background: var(--white);
  align-items: center;
}

.section-photo {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #dfe8e8;
  box-shadow: 0 20px 52px rgba(7,16,18,.13);
}

.section-photo img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.trust-item {
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
  border-radius: 8px;
  background: #eef5f4;
}

.trust-item b { color: var(--coral); font-size: 26px; }
.trust-item span { font-size: 20px; font-weight: 900; line-height: 1.35; }

.ops-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.ops-visual-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 12px;
  margin-bottom: 16px;
}

.ops-visual-grid .section-photo img {
  min-height: 360px;
}

.ops-card {
  padding: 26px;
  min-height: 260px;
  border-radius: 8px;
  color: var(--white);
  background: var(--ink-2);
}

.ops-card.accent {
  color: var(--ink);
  background: var(--yellow);
}

.ops-card h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
}

.ops-card p {
  margin-top: 18px;
  color: inherit;
  opacity: .76;
  line-height: 1.6;
}

.usecase-section {
  background: #eaf1ef;
}

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.usecase-grid div {
  padding: 28px 18px;
  border-radius: 8px;
  background: var(--white);
  font-size: 22px;
  font-weight: 900;
  text-align: center;
  box-shadow: 0 12px 34px rgba(7,16,18,.07);
}

.comparison-section {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 28px;
  background: var(--ink);
  color: var(--white);
}

.comparison-table {
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 8px;
  overflow: hidden;
}

.comparison-table .row {
  display: grid;
  grid-template-columns: .8fr 1fr 1fr;
  border-bottom: 1px solid rgba(255,255,255,.14);
}

.comparison-table .row:last-child { border-bottom: 0; }

.comparison-table span,
.comparison-table strong {
  padding: 18px;
  border-right: 1px solid rgba(255,255,255,.14);
}

.comparison-table strong {
  color: var(--lime);
}

.comparison-table .head {
  background: rgba(255,255,255,.08);
  font-weight: 900;
}

.cases-section {
  background: var(--white);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.case-card {
  display: flex;
  min-height: 360px;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: #f5faf8;
  color: var(--ink);
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.case-card:hover,
.case-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(22,217,255,.7);
  box-shadow: 0 18px 42px rgba(7,16,18,.12);
  outline: none;
}

.case-card span {
  display: inline-block;
  padding: 7px 10px;
  border-radius: 5px;
  background: var(--ink);
  color: var(--lime);
  font-size: 12px;
  font-weight: 900;
}

.case-card strong {
  margin-top: 18px;
  font-size: 30px;
  line-height: 1.15;
}

.case-card p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.case-breakdown {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  margin: 18px 0 0;
}

.case-breakdown div {
  padding: 12px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.case-breakdown dt,
.case-breakdown dd {
  margin: 0;
}

.case-breakdown dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.case-breakdown dd {
  margin-top: 5px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 900;
}

.case-card b {
  margin-top: 18px;
  color: #1d5c00;
  font-size: 22px;
}

.calculator-panel {
  display: grid;
  grid-template-columns: .8fr 1.2fr .9fr;
  gap: 18px;
  align-items: end;
  margin-top: 16px;
  padding: 24px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
}

.calculator-copy h3 {
  margin: 0;
  font-size: 28px;
  line-height: 1.2;
}

.calculator-copy p {
  margin: 10px 0 0;
  color: rgba(255,255,255,.7);
  line-height: 1.5;
}

.calculator-fields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.calculator-fields label {
  display: grid;
  gap: 7px;
  color: rgba(255,255,255,.78);
  font-size: 13px;
  font-weight: 800;
}

.calculator-fields input {
  width: 100%;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 6px;
  padding: 13px 12px;
  background: rgba(255,255,255,.08);
  color: var(--white);
  font: inherit;
}

.calculator-result {
  display: grid;
  gap: 8px;
}

.calculator-result div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.14);
}

.calculator-result span {
  color: rgba(255,255,255,.68);
}

.calculator-result strong {
  color: var(--lime);
  text-align: right;
}

.download-section {
  display: grid;
  grid-template-columns: 1fr 460px;
  gap: 28px;
  align-items: center;
  background: #edf5f3;
}

.download-copy {
  max-width: 760px;
}

.download-copy h2 {
  margin: 8px 0 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.04;
  font-weight: 900;
}

.download-copy p:not(.label) {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.download-card {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 22px;
  align-items: center;
  min-height: 170px;
  padding: 28px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 20px 54px rgba(7,16,18,.18);
  transition: transform .18s ease, box-shadow .18s ease;
}

.download-card:hover,
.download-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 26px 70px rgba(7,16,18,.26);
  outline: none;
}

.download-icon {
  display: grid;
  place-items: center;
  position: relative;
  width: 96px;
  height: 112px;
  border-radius: 8px 18px 8px 8px;
  background: linear-gradient(145deg, #ffffff 0%, #f5fff0 42%, var(--lime) 43%, var(--lime) 100%);
  color: #061012;
  border: 3px solid rgba(255,255,255,.95);
  box-shadow: 0 14px 30px rgba(0,0,0,.28);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0;
}

.download-icon::before {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 30px;
  height: 30px;
  border-left: 3px solid rgba(7,16,18,.22);
  border-bottom: 3px solid rgba(7,16,18,.22);
  border-radius: 0 15px 0 8px;
  background: #d8ff4c;
}

.download-icon::after {
  content: "DOWNLOAD";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 14px;
  padding-top: 8px;
  border-top: 2px solid rgba(7,16,18,.2);
  color: rgba(7,16,18,.72);
  font-size: 10px;
  line-height: 1;
  text-align: center;
}

.download-card strong,
.download-card span {
  display: block;
}

.download-card strong {
  font-size: 24px;
  line-height: 1.2;
}

.download-card span {
  margin-top: 8px;
  color: rgba(255,255,255,.72);
  line-height: 1.45;
}

.contact-section {
  display: grid;
  grid-template-columns: 1fr 480px;
  gap: 36px;
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 14px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 20px 52px rgba(7,16,18,.11);
}

.contact-form label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cfd9dc;
  border-radius: 6px;
  padding: 13px 12px;
  font: inherit;
  resize: vertical;
}

.contact-form select.is-selected {
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(184,255,61,.2);
}

.form-button {
  width: 100%;
  border: 0;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(18px, 5vw, 72px);
  background: #050b0c;
  color: rgba(255,255,255,.72);
}

.footer-brand { color: var(--white); }

@media (max-width: 980px) {
  .site-nav { display: none; }
  .hero,
  .trust-section,
  .comparison-section,
  .contact-section,
  .download-section,
  .ops-visual-grid,
  .volume-panel {
    grid-template-columns: 1fr;
  }
  .pricing-grid,
  .policy-strip,
  .ops-layout {
    grid-template-columns: 1fr;
  }
  .ticker { grid-template-columns: 1fr 1fr; }
  .volume-grid,
  .usecase-grid,
  .case-grid,
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }
  .calculator-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-header { height: 64px; }
  .header-cta { display: none; }
  .hero { min-height: auto; padding-top: 94px; }
  .hero h1 { font-size: 64px; }
  .hero-panel { padding: 16px; }
  .mini-metrics,
  .ticker,
  .volume-grid,
  .usecase-grid,
  .case-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .calculator-fields {
    grid-template-columns: 1fr;
  }
  .download-card {
    grid-template-columns: 82px 1fr;
    gap: 16px;
    padding: 20px;
  }
  .download-icon {
    width: 78px;
    height: 92px;
    font-size: 20px;
  }
  .download-icon::before {
    width: 24px;
    height: 24px;
  }
  .download-icon::after {
    left: 9px;
    right: 9px;
    bottom: 10px;
    font-size: 8px;
  }
  .case-breakdown {
    grid-template-columns: 1fr;
  }
  .comparison-table .row {
    grid-template-columns: 1fr;
  }
  .rate-row {
    grid-template-columns: 1fr;
  }
  .comparison-table span,
  .comparison-table strong,
  .rate-row span,
  .rate-row strong {
    border-right: 0;
    border-bottom: 1px solid rgba(7,16,18,.1);
  }
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}