:root {
  --wing-bg: #f6f2e8;
  --wing-surface: #ffffff;
  --wing-ink: #171614;
  --wing-muted: #6d685f;
  --wing-line: #ddd6c8;
  --wing-primary: #a51f2d;
  --wing-primary-deep: #7f1722;
  --wing-accent: #c89a45;
  --wing-dark-soft: #25231f;
  --wing-radius: 6px;
  --wing-shadow: 0 14px 36px rgba(23, 22, 20, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--wing-bg);
  color: var(--wing-ink);
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--wing-accent);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 40px);
}

.section {
  padding-block: 92px;
}

.section-tight {
  padding-block: 64px;
}

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

.section-dark {
  background: var(--wing-ink);
  color: var(--wing-surface);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 44px;
}

.section-heading small,
.eyebrow {
  display: block;
  margin-bottom: 12px;
  color: var(--wing-primary);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.section-dark .section-heading small,
.section-dark .eyebrow {
  color: var(--wing-accent);
}

.section-heading h2,
.page-title {
  margin: 0;
  font-size: 44px;
  line-height: 1.2;
}

.section-heading p,
.lead {
  margin: 16px 0 0;
  color: var(--wing-muted);
  font-size: 18px;
  line-height: 1.75;
}

.section-dark .section-heading p,
.section-dark .lead {
  color: #d6d0c6;
}

.btn {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 750;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--wing-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--wing-primary-deep);
}

.btn-outline {
  border-color: currentColor;
  background: transparent;
}

.btn-light {
  background: #fff;
  color: var(--wing-ink);
}

.btn-block {
  width: 100%;
}

.icon-btn {
  display: inline-flex;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: currentColor;
  cursor: pointer;
  line-height: 0;
}

.icon-btn > svg,
.btn > svg,
.icon-box > svg,
.nav-phone > svg {
  display: block;
  width: 20px;
  height: 20px;
  margin: 0;
}

.icon-box {
  display: inline-grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  border: 1px solid var(--wing-line);
  border-radius: 4px;
  color: var(--wing-primary);
  line-height: 0;
}

.site-header {
  position: relative;
  z-index: 20;
  width: 100%;
  height: 76px;
  border-bottom: 1px solid var(--wing-line);
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--wing-ink);
  font-size: 24px;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.brand span {
  color: var(--wing-primary);
}

.brand small {
  margin-left: 8px;
  color: var(--wing-muted);
  font-size: 11px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav > a {
  position: relative;
  color: var(--wing-ink);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav > a:not(.nav-phone)::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  background: var(--wing-primary);
  content: "";
  opacity: 0;
  transform: scaleX(0);
  transition: 160ms ease;
}

.site-nav > a:hover::after,
.site-nav > a[aria-current="page"]::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-phone {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border-radius: 4px;
  background: var(--wing-primary);
  color: #fff !important;
}

.menu-toggle {
  display: none;
}

.concept-a.home .site-header {
  position: absolute;
  border-bottom-color: rgba(255, 255, 255, 0.25);
  background: transparent;
}

.concept-a.home .brand,
.concept-a.home .site-nav > a {
  color: #fff;
}

.concept-a.home .brand span {
  color: var(--wing-accent);
}

.concept-a.home .brand small {
  color: #ddd5ca;
}

.concept-a.home .nav-phone {
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(23, 22, 20, 0.36);
}

.concept-a-hero {
  position: relative;
  display: flex;
  min-height: min(720px, 84vh);
  align-items: flex-end;
  padding: 150px 0 48px;
  background: url("./living-wide.jpg") center / cover no-repeat;
  color: #fff;
}

.concept-a-hero::before {
  position: absolute;
  inset: 0;
  background: rgba(23, 22, 20, 0.61);
  content: "";
}

.concept-a-hero .container {
  position: relative;
  z-index: 1;
}

.concept-a-copy {
  max-width: 720px;
}

.concept-a-copy h1 {
  margin: 16px 0 20px;
  font-size: 62px;
  line-height: 1.06;
}

.concept-a-copy p {
  max-width: 650px;
  margin: 0;
  color: #f0ebe2;
  font-size: 19px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.evidence-rail {
  display: grid;
  margin-top: 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  grid-template-columns: repeat(3, 1fr);
}

.evidence-rail-item {
  min-width: 0;
  padding: 22px 26px 0 0;
}

.evidence-rail-item + .evidence-rail-item {
  padding-left: 26px;
  border-left: 1px solid rgba(255, 255, 255, 0.24);
}

.evidence-rail-item small {
  display: block;
  color: var(--wing-accent);
  font-size: 12px;
  font-weight: 800;
}

.evidence-rail-item strong {
  display: block;
  margin-top: 7px;
  font-size: 19px;
  line-height: 1.35;
}

.checker-layout {
  display: grid;
  align-items: start;
  gap: 72px;
  grid-template-columns: 0.75fr 1.25fr;
}

.checker-intro {
  position: sticky;
  top: 36px;
}

.checker-intro h2 {
  margin: 0;
  font-size: 43px;
  line-height: 1.2;
}

.checker-intro p {
  color: var(--wing-muted);
  line-height: 1.75;
}

.checker {
  border: 1px solid var(--wing-line);
  border-radius: var(--wing-radius);
  background: #fff;
  box-shadow: var(--wing-shadow);
}

.checker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 28px;
  border-bottom: 1px solid var(--wing-line);
}

.checker-head strong {
  font-size: 20px;
}

.checker-head span {
  color: var(--wing-primary);
  font-size: 13px;
  font-weight: 800;
}

.check-group {
  padding: 26px 28px;
  border-bottom: 1px solid var(--wing-line);
}

.check-group:last-of-type {
  border-bottom: 0;
}

.check-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 15px;
  font-weight: 750;
}

.check-label b {
  color: var(--wing-primary);
}

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

.choice-btn {
  min-height: 50px;
  padding: 10px 12px;
  border: 1px solid #c8c0b2;
  border-radius: 4px;
  background: #fff;
  color: var(--wing-ink);
  cursor: pointer;
  font-weight: 650;
}

.choice-btn:hover,
.choice-btn[aria-pressed="true"] {
  border-color: var(--wing-primary);
  background: #fff7f6;
  color: var(--wing-primary);
}

.check-result {
  padding: 24px 28px;
  background: var(--wing-ink);
  color: #fff;
}

.check-result small {
  display: block;
  color: var(--wing-accent);
  font-weight: 750;
}

.check-result p {
  min-height: 50px;
  margin: 9px 0 18px;
  color: #eee7dc;
  line-height: 1.6;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.price-table th,
.price-table td {
  padding: 20px 18px;
  border-bottom: 1px solid var(--wing-line);
  text-align: left;
}

.price-table th {
  border-top: 2px solid var(--wing-ink);
  color: var(--wing-muted);
  font-size: 13px;
}

.price-table td:first-child {
  font-weight: 750;
}

.price-table .price {
  color: var(--wing-primary);
  font-size: 20px;
  font-weight: 850;
  white-space: nowrap;
}

.price-note {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 20px;
  color: var(--wing-muted);
  font-size: 14px;
  line-height: 1.65;
}

.proof-layout {
  display: grid;
  gap: 48px;
  grid-template-columns: 1fr 1fr;
}

.proof-document {
  min-height: 340px;
  padding: 34px;
  border: 1px solid #4a4741;
  border-radius: var(--wing-radius);
  background: var(--wing-dark-soft);
}

.proof-document .icon-box {
  border-color: #655f55;
  color: var(--wing-accent);
}

.proof-document h3 {
  margin: 30px 0 10px;
  font-size: 31px;
}

.proof-document p {
  color: #d8d0c4;
  line-height: 1.75;
}

.proof-status {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  margin-top: 18px;
  padding: 0 10px;
  border: 1px solid #6c655b;
  border-radius: 3px;
  color: var(--wing-accent);
  font-size: 12px;
  font-weight: 700;
}

.review-quote {
  display: flex;
  min-height: 340px;
  flex-direction: column;
  justify-content: space-between;
  padding: 34px;
  border-top: 1px solid #6c655b;
  border-bottom: 1px solid #6c655b;
}

.review-quote blockquote {
  margin: 0;
  font-size: 25px;
  font-weight: 650;
  line-height: 1.65;
}

.review-quote p {
  color: #cfc8bd;
  font-size: 14px;
  line-height: 1.65;
}

.review-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--wing-accent);
  font-weight: 700;
  text-decoration: none;
}

.service-grid {
  display: grid;
  gap: 0 24px;
  grid-template-columns: repeat(3, 1fr);
}

.service-item {
  min-height: 230px;
  padding: 26px 0;
  border-top: 1px solid var(--wing-line);
}

.service-item h3 {
  margin: 22px 0 10px;
  font-size: 23px;
}

.service-item p {
  margin: 0;
  color: var(--wing-muted);
  line-height: 1.7;
}

.case-feature {
  display: grid;
  min-height: 560px;
  overflow: hidden;
  border-radius: var(--wing-radius);
  background: var(--wing-surface);
  box-shadow: var(--wing-shadow);
  grid-template-columns: 1.2fr 0.8fr;
}

.case-feature-image {
  position: relative;
  min-height: 520px;
}

.case-feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 44px;
}

.case-feature-copy h3 {
  margin: 14px 0;
  font-size: 34px;
}

.case-feature-copy p {
  color: var(--wing-muted);
  line-height: 1.7;
}

.demo-badge {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 9px;
  border: 1px solid var(--wing-primary);
  border-radius: 3px;
  color: var(--wing-primary);
  font-size: 12px;
  font-weight: 750;
}

.metric-grid {
  display: grid;
  margin-top: 28px;
  border-top: 1px solid var(--wing-line);
  grid-template-columns: repeat(2, 1fr);
}

.metric {
  padding: 20px 18px 0 0;
}

.metric:nth-child(even) {
  padding-left: 18px;
  border-left: 1px solid var(--wing-line);
}

.metric strong {
  display: block;
  font-size: 26px;
}

.metric span {
  color: var(--wing-muted);
  font-size: 13px;
}

.process-list {
  display: grid;
  border-top: 1px solid var(--wing-line);
  grid-template-columns: repeat(4, 1fr);
}

.process-step {
  min-height: 210px;
  padding: 28px 24px 0 0;
}

.process-step + .process-step {
  padding-left: 24px;
  border-left: 1px solid var(--wing-line);
}

.process-step b {
  color: var(--wing-primary);
  font-size: 28px;
}

.process-step h3 {
  margin: 32px 0 10px;
  font-size: 20px;
}

.process-step p {
  color: var(--wing-muted);
  line-height: 1.65;
}

.faq-list {
  border-top: 1px solid var(--wing-ink);
}

.faq-list details {
  border-bottom: 1px solid var(--wing-line);
}

.faq-list summary {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  font-size: 18px;
  font-weight: 700;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  color: var(--wing-primary);
  font-size: 28px;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details p {
  max-width: 800px;
  margin: 0;
  padding: 0 0 26px;
  color: var(--wing-muted);
  line-height: 1.75;
}

.final-cta {
  padding: 84px 0;
  background: var(--wing-primary);
  color: #fff;
}

.final-cta-inner {
  display: grid;
  align-items: center;
  gap: 40px;
  grid-template-columns: 1fr auto;
}

.final-cta h2 {
  margin: 0;
  font-size: 43px;
}

.final-cta p {
  margin: 12px 0 0;
  color: #f4dfe1;
  line-height: 1.65;
}

.photo-checks {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}

.photo-check {
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 3px;
  font-size: 13px;
  font-weight: 700;
}

.site-footer {
  padding: 48px 0 88px;
  background: var(--wing-ink);
  color: #fff;
}

.footer-grid {
  display: grid;
  gap: 36px;
  grid-template-columns: 1.2fr 1fr 1fr;
}

.footer-brand {
  font-size: 26px;
  font-weight: 900;
}

.footer-brand span {
  color: var(--wing-accent);
}

.footer-grid h3 {
  margin: 0 0 13px;
  color: var(--wing-accent);
  font-size: 13px;
}

.footer-grid p,
.footer-grid a {
  margin: 5px 0;
  color: #cbc4b9;
  font-size: 14px;
  line-height: 1.65;
  text-decoration: none;
}

.footer-note {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid #403c36;
  color: #8f887d;
  font-size: 12px;
}

.demo-notice {
  padding: 14px 20px;
  background: #eee8dc;
  color: #5d574e;
  font-size: 12px;
  line-height: 1.6;
  text-align: center;
}

.mobile-action-bar {
  position: fixed;
  z-index: 40;
  right: 0;
  bottom: 0;
  left: 0;
  display: none;
  height: 66px;
  padding: 8px;
  gap: 8px;
  border-top: 1px solid var(--wing-line);
  background: #fff;
}

.mobile-action-bar .btn {
  min-width: 0;
  min-height: 50px;
  flex: 1;
  padding-inline: 10px;
  font-size: 14px;
}

/* Concept B */
.concept-b {
  background: #fff;
}

.concept-b .section-heading h2,
.concept-b .page-title,
.concept-b-hero h1,
.concept-b .final-cta h2 {
  font-family: "Noto Serif KR", Georgia, serif;
  font-weight: 650;
}

.concept-b-hero {
  position: relative;
  display: flex;
  min-height: min(720px, 84vh);
  align-items: flex-end;
  padding: 130px 0 54px;
  background: url("./living-minimal.jpg") center / cover no-repeat;
  color: #fff;
  text-align: center;
}

.concept-b-hero::before {
  position: absolute;
  inset: 0;
  background: rgba(23, 22, 20, 0.54);
  content: "";
}

.concept-b-hero .container {
  position: relative;
  z-index: 1;
}

.concept-b-hero h1 {
  max-width: 880px;
  margin: 14px auto 20px;
  font-size: 58px;
  line-height: 1.22;
}

.concept-b-hero p {
  max-width: 670px;
  margin: 0 auto;
  color: #f1ece3;
  font-size: 18px;
  line-height: 1.75;
}

.concept-b-hero .hero-actions {
  justify-content: center;
}

.concept-b-proof-line {
  display: flex;
  max-width: 820px;
  justify-content: center;
  gap: 0;
  margin: 38px auto 0;
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  border-bottom: 1px solid rgba(255, 255, 255, 0.45);
}

.concept-b-proof-line span {
  flex: 1;
  padding: 15px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}

.concept-b-proof-line span + span {
  border-left: 1px solid rgba(255, 255, 255, 0.35);
}

.diagnostic-band {
  padding: 54px 0;
  background: var(--wing-bg);
}

.diagnostic-grid {
  display: grid;
  gap: 48px;
  grid-template-columns: 0.8fr 1.2fr;
}

.diagnostic-title {
  padding-right: 24px;
  border-right: 1px solid var(--wing-line);
}

.diagnostic-title b {
  display: block;
  color: var(--wing-primary);
  font-family: "Noto Serif KR", Georgia, serif;
  font-size: 64px;
  font-weight: 600;
  line-height: 1;
}

.diagnostic-title h2 {
  margin: 18px 0 0;
  font-family: "Noto Serif KR", Georgia, serif;
  font-size: 34px;
}

.diagnostic-options {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, 1fr);
}

.diagnostic-option {
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--wing-line);
  border-radius: 4px;
  background: #fff;
}

.diagnostic-option small {
  display: block;
  color: var(--wing-primary);
  font-weight: 800;
}

.diagnostic-option strong {
  display: block;
  margin-top: 20px;
  line-height: 1.4;
}

.concept-b .price-table th {
  border-top-color: var(--wing-primary);
}

.concept-b .service-grid {
  grid-template-columns: repeat(2, 1fr);
}

.concept-b .service-item {
  display: grid;
  min-height: 190px;
  align-items: start;
  gap: 24px;
  grid-template-columns: auto 1fr;
}

.concept-b .service-item h3 {
  margin-top: 0;
  font-family: "Noto Serif KR", Georgia, serif;
}

.concept-b .proof-layout {
  grid-template-columns: 0.8fr 1.2fr;
}

.concept-b .proof-document {
  border-color: var(--wing-line);
  background: var(--wing-bg);
  color: var(--wing-ink);
}

.concept-b .proof-document p {
  color: var(--wing-muted);
}

.concept-b .proof-status {
  border-color: var(--wing-primary);
  color: var(--wing-primary);
}

.concept-b .review-quote {
  border-color: var(--wing-line);
  color: var(--wing-ink);
}

.concept-b .review-quote p {
  color: var(--wing-muted);
}

.concept-b .review-source {
  color: var(--wing-primary);
}

/* Inner pages */
.page-hero {
  position: relative;
  display: flex;
  min-height: 390px;
  align-items: flex-end;
  padding: 80px 0 54px;
  overflow: hidden;
  background: var(--wing-ink);
  color: #fff;
}

.page-hero.has-image {
  background: center / cover no-repeat;
}

.page-hero.has-image::before {
  position: absolute;
  inset: 0;
  background: rgba(23, 22, 20, 0.62);
  content: "";
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero .page-title {
  max-width: 800px;
  font-size: 52px;
}

.page-hero .lead {
  max-width: 700px;
  color: #e2dbd0;
}

.subnav {
  border-bottom: 1px solid var(--wing-line);
  background: #fff;
}

.subnav-inner {
  display: flex;
  min-height: 62px;
  align-items: center;
  gap: 24px;
  overflow-x: auto;
}

.subnav a {
  color: var(--wing-muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.content-split {
  display: grid;
  align-items: start;
  gap: 64px;
  grid-template-columns: 0.75fr 1.25fr;
}

.sticky-copy {
  position: sticky;
  top: 30px;
}

.sticky-copy h2 {
  margin: 0;
  font-size: 39px;
  line-height: 1.28;
}

.sticky-copy p {
  color: var(--wing-muted);
  line-height: 1.75;
}

.detail-list {
  border-top: 2px solid var(--wing-ink);
}

.detail-row {
  display: grid;
  gap: 30px;
  padding: 28px 0;
  border-bottom: 1px solid var(--wing-line);
  grid-template-columns: 0.55fr 1.45fr;
}

.detail-row h3 {
  margin: 0;
  font-size: 21px;
}

.detail-row p {
  margin: 0;
  color: var(--wing-muted);
  line-height: 1.7;
}

.condition-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.condition-tag {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--wing-line);
  border-radius: 3px;
  color: var(--wing-muted);
  font-size: 12px;
  font-weight: 700;
}

.case-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.filter-btn {
  min-height: 42px;
  padding: 0 15px;
  border: 1px solid var(--wing-line);
  border-radius: 4px;
  background: #fff;
  cursor: pointer;
  font-weight: 700;
}

.filter-btn[aria-pressed="true"] {
  border-color: var(--wing-primary);
  background: var(--wing-primary);
  color: #fff;
}

.case-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(2, 1fr);
}

.case-card {
  overflow: hidden;
  border: 1px solid var(--wing-line);
  border-radius: var(--wing-radius);
  background: #fff;
}

.case-card[hidden] {
  display: none;
}

.case-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.case-card-copy {
  padding: 22px;
}

.case-card-copy h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.case-card-copy p {
  margin: 0;
  color: var(--wing-muted);
  line-height: 1.65;
}

.case-card-copy small {
  display: block;
  margin-top: 16px;
  color: var(--wing-primary);
  font-weight: 700;
}

.guide-list {
  counter-reset: guide;
}

.guide-step {
  display: grid;
  gap: 32px;
  padding: 34px 0;
  border-top: 1px solid var(--wing-line);
  counter-increment: guide;
  grid-template-columns: 90px 1fr;
}

.guide-step::before {
  color: var(--wing-primary);
  content: "0" counter(guide);
  font-family: "Noto Serif KR", Georgia, serif;
  font-size: 40px;
  font-weight: 650;
}

.guide-step h3 {
  margin: 3px 0 10px;
  font-size: 23px;
}

.guide-step p {
  margin: 0;
  color: var(--wing-muted);
  line-height: 1.7;
}

.contact-layout {
  display: grid;
  gap: 60px;
  grid-template-columns: 0.8fr 1.2fr;
}

.contact-phone {
  padding: 34px;
  border-radius: var(--wing-radius);
  background: var(--wing-primary);
  color: #fff;
}

.contact-phone small {
  display: block;
  color: #f4d8db;
  font-weight: 750;
}

.contact-phone a {
  display: block;
  margin-top: 12px;
  font-size: 34px;
  font-weight: 850;
  text-decoration: none;
}

.contact-checklist {
  border-top: 2px solid var(--wing-ink);
}

.contact-check {
  display: grid;
  align-items: center;
  gap: 20px;
  min-height: 82px;
  border-bottom: 1px solid var(--wing-line);
  grid-template-columns: 48px 1fr;
}

.contact-check b {
  color: var(--wing-primary);
  font-size: 24px;
}

.inquiry-layout {
  display: grid;
  align-items: start;
  gap: 56px;
  grid-template-columns: minmax(270px, 0.72fr) minmax(0, 1.55fr);
}

.inquiry-aside {
  position: sticky;
  top: 24px;
}

.contact-phone p {
  margin: 24px 0 26px;
  color: #f4d8db;
  font-size: 14px;
  line-height: 1.7;
}

.contact-phone .contact-number {
  font-size: 29px;
  overflow-wrap: anywhere;
  white-space: nowrap;
}

.contact-phone .btn {
  margin-top: 0;
  font-size: 15px;
}

.consult-note {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--wing-line);
}

.consult-note h2 {
  margin: 0;
  font-size: 25px;
}

.consult-note ul {
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 0;
  color: var(--wing-muted);
  line-height: 1.65;
  list-style: none;
}

.consult-note li {
  position: relative;
  padding-left: 18px;
}

.consult-note li::before {
  position: absolute;
  top: 10px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--wing-primary);
  content: "";
}

.inquiry-form {
  overflow: hidden;
  border: 1px solid var(--wing-line);
  border-radius: var(--wing-radius);
  background: var(--wing-surface);
  box-shadow: var(--wing-shadow);
}

.form-intro {
  padding: 38px 40px 34px;
  background: var(--wing-ink);
  color: #fff;
}

.form-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--wing-accent);
  font-size: 12px;
  font-weight: 800;
}

.form-intro h2 {
  margin: 0;
  font-size: 34px;
}

.form-intro > p {
  margin: 10px 0 0;
  color: #d7d0c5;
  font-size: 14px;
}

.form-intro > p b,
.field-label b,
.privacy-check b {
  color: #ef8f9b;
}

.preview-form-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 24px;
  padding: 13px 14px;
  border: 1px solid #45413b;
  border-radius: 4px;
  background: #25231f;
  color: #d7d0c5;
  font-size: 13px;
  line-height: 1.55;
}

.preview-form-note > svg,
.field-help > svg {
  display: block;
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  margin: 1px 0 0;
}

.form-step {
  padding: 38px 40px 42px;
  border-top: 1px solid var(--wing-line);
}

.form-step-heading {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 28px;
}

.form-step-index {
  display: inline-grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border-radius: 50%;
  background: var(--wing-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
}

.form-step-heading h3 {
  margin: 2px 0 5px;
  font-size: 23px;
}

.form-step-heading p {
  margin: 0;
  color: var(--wing-muted);
  font-size: 14px;
  line-height: 1.55;
}

.form-grid {
  display: grid;
  gap: 24px 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-field {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.field-full {
  grid-column: 1 / -1;
}

.field-label {
  display: block;
  margin-bottom: 9px;
  color: var(--wing-ink);
  font-size: 14px;
  font-weight: 750;
  line-height: 1.45;
}

.field-label > span,
.field-label span {
  color: var(--wing-muted);
  font-size: 12px;
  font-weight: 550;
}

.field-label b,
.privacy-check b {
  color: var(--wing-primary);
}

.form-control {
  display: block;
  width: 100%;
  min-height: 52px;
  padding: 0 14px;
  border: 1px solid #cfc7ba;
  border-radius: 4px;
  background: #fff;
  color: var(--wing-ink);
  line-height: 1.4;
}

.form-control::placeholder {
  color: #989187;
}

.form-control:hover {
  border-color: #9d9589;
}

.form-control:focus {
  border-color: var(--wing-primary);
  outline: 3px solid rgba(165, 31, 45, 0.12);
  outline-offset: 0;
}

.form-control:user-invalid {
  border-color: var(--wing-primary);
}

.form-textarea {
  min-height: 132px;
  padding-block: 13px;
  resize: vertical;
}

.file-control {
  height: auto;
  min-height: 54px;
  padding: 7px;
}

.file-control::file-selector-button {
  min-height: 38px;
  margin-right: 12px;
  padding: 0 13px;
  border: 0;
  border-radius: 3px;
  background: var(--wing-bg);
  color: var(--wing-ink);
  cursor: pointer;
  font-weight: 700;
}

.form-field > small {
  display: block;
  margin-top: 8px;
  color: var(--wing-muted);
  font-size: 12px;
  line-height: 1.55;
}

.field-help {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 18px 0 0;
  color: var(--wing-primary);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.55;
}

.option-grid {
  display: grid;
  gap: 9px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.option-grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.form-option,
.privacy-check {
  display: flex;
  min-width: 0;
  min-height: 50px;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--wing-line);
  border-radius: 4px;
  background: #fff;
  color: var(--wing-ink);
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.4;
}

.form-option:hover,
.privacy-check:hover {
  border-color: #aaa194;
}

.form-option:has(input:checked),
.privacy-check:has(input:checked) {
  border-color: var(--wing-primary);
  background: #fff8f8;
}

.form-option input,
.privacy-check input {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  margin: 0;
  accent-color: var(--wing-primary);
}

.form-option span,
.privacy-check span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.form-submit {
  padding: 34px 40px 40px;
  border-top: 1px solid var(--wing-line);
  background: var(--wing-bg);
}

.privacy-check {
  align-items: flex-start;
  margin-bottom: 14px;
  background: #fff;
  font-size: 13px;
  font-weight: 550;
}

.privacy-check input {
  margin-top: 1px;
}

.form-status {
  margin: 12px 0 0;
  color: var(--wing-muted);
  font-size: 12px;
  line-height: 1.55;
  text-align: center;
}

.form-result[hidden] {
  display: none;
}

.form-result {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid var(--wing-line);
  border-radius: 4px;
  background: #fff;
}

.form-result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.form-result-head span {
  color: var(--wing-primary);
  font-size: 11px;
  font-weight: 800;
}

.form-result-head h3 {
  margin: 6px 0 0;
  font-size: 21px;
}

.form-result pre {
  margin: 20px 0 0;
  padding: 18px;
  overflow: auto;
  border-radius: 3px;
  background: #f5f2ec;
  color: #45413b;
  font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.form-result-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.form-result-actions .btn {
  flex: 1;
}

.concept-b .contact-phone {
  border-top: 3px solid var(--wing-primary);
  background: var(--wing-bg);
  color: var(--wing-ink);
}

.concept-b .contact-phone small,
.concept-b .contact-phone p {
  color: var(--wing-muted);
}

.concept-b .contact-phone .contact-number {
  color: var(--wing-primary);
  font-family: "Noto Serif KR", Georgia, serif;
}

.concept-b .contact-phone .btn-light {
  background: var(--wing-primary);
  color: #fff;
}

.concept-b .consult-note h2,
.concept-b .form-intro h2,
.concept-b .form-step-heading h3,
.concept-b .form-result-head h3 {
  font-family: "Noto Serif KR", Georgia, serif;
}

.concept-b .inquiry-form {
  border-right: 0;
  border-left: 0;
  border-radius: 0;
  box-shadow: none;
}

.concept-b .form-intro {
  padding-inline: 0;
  border-top: 3px solid var(--wing-ink);
  background: #fff;
  color: var(--wing-ink);
}

.concept-b .form-intro > p {
  color: var(--wing-muted);
}

.concept-b .preview-form-note {
  border-color: var(--wing-line);
  background: var(--wing-bg);
  color: var(--wing-muted);
}

.concept-b .form-step {
  display: grid;
  gap: 34px;
  padding-inline: 0;
  grid-template-columns: 178px minmax(0, 1fr);
}

.concept-b .form-step-heading {
  display: block;
  margin: 0;
}

.concept-b .form-step-index {
  width: auto;
  height: auto;
  display: block;
  margin-bottom: 18px;
  background: transparent;
  color: var(--wing-primary);
  font-family: "Noto Serif KR", Georgia, serif;
  font-size: 31px;
  text-align: left;
}

.concept-b .form-submit {
  padding-inline: 0;
  background: #fff;
}

/* Comparison */
.showcase {
  background: var(--wing-ink);
  color: #fff;
}

.showcase-header {
  padding: 32px 0 22px;
  border-bottom: 1px solid #3b3732;
}

.showcase-header .brand {
  color: #fff;
}

.showcase-hero {
  padding: 56px 0 42px;
}

.showcase-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: 52px;
  line-height: 1.14;
}

.showcase-hero p {
  max-width: 740px;
  color: #cfc8bd;
  font-size: 17px;
  line-height: 1.7;
}

.concept-grid {
  display: grid;
  gap: 24px;
  padding-bottom: 72px;
  grid-template-columns: repeat(2, 1fr);
}

.concept-card {
  overflow: hidden;
  border: 1px solid #403c36;
  border-radius: var(--wing-radius);
  background: #211f1c;
}

.concept-card img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.concept-card-body {
  padding: 26px;
}

.concept-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.concept-label {
  color: var(--wing-accent);
  font-size: 12px;
  font-weight: 800;
}

.recommend {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 9px;
  border-radius: 3px;
  background: var(--wing-primary);
  font-size: 12px;
  font-weight: 750;
}

.concept-card h2 {
  margin: 14px 0 10px;
  font-size: 29px;
}

.concept-card p {
  min-height: 78px;
  margin: 0 0 22px;
  color: #c9c2b8;
  line-height: 1.65;
}

.showcase-note {
  padding: 20px 0;
  border-top: 1px solid #3b3732;
  color: #8f887d;
  font-size: 12px;
  text-align: center;
}

@media (max-width: 980px) {
  .site-nav {
    gap: 18px;
  }

  .site-nav > a:not(.nav-phone) {
    display: none;
  }

  .checker-layout,
  .proof-layout,
  .concept-b .proof-layout,
  .case-feature,
  .diagnostic-grid,
  .content-split,
  .contact-layout,
  .inquiry-layout {
    grid-template-columns: 1fr;
  }

  .checker-intro,
  .sticky-copy,
  .inquiry-aside {
    position: static;
  }

  .process-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-step:nth-child(3) {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--wing-line);
  }

  .process-step:nth-child(4) {
    border-top: 1px solid var(--wing-line);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }

  .concept-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .section {
    padding-block: 68px;
  }

  .section-tight {
    padding-block: 52px;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  .section-heading h2,
  .page-title {
    font-size: 34px;
  }

  .section-heading p,
  .lead {
    font-size: 16px;
  }

  .site-header {
    height: 66px;
  }

  .brand {
    font-size: 21px;
  }

  .brand small {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    z-index: 50;
    inset: 66px 0 auto;
    display: none;
    max-height: calc(100dvh - 66px);
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 14px 20px 22px;
    overflow-y: auto;
    border-bottom: 1px solid var(--wing-line);
    background: #fff;
    box-shadow: var(--wing-shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav > a,
  .site-nav > a:not(.nav-phone) {
    display: flex;
    min-height: 48px;
    align-items: center;
    color: var(--wing-ink) !important;
  }

  .site-nav > a::after {
    display: none;
  }

  .nav-phone {
    justify-content: center;
    margin-top: 10px;
    color: #fff !important;
  }

  .concept-a.home .menu-toggle {
    color: #fff;
  }

  .concept-a-copy h1 {
    font-size: 43px;
  }

  .concept-a-copy p {
    font-size: 17px;
  }

  .concept-a-hero {
    min-height: 710px;
    padding: 120px 0 36px;
    background-position: 62% center;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .evidence-rail {
    grid-template-columns: 1fr;
  }

  .evidence-rail-item,
  .evidence-rail-item + .evidence-rail-item {
    padding: 14px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-left: 0;
  }

  .evidence-rail-item:first-child {
    border-top: 0;
  }

  .checker-layout {
    gap: 28px;
  }

  .checker-intro h2 {
    font-size: 34px;
  }

  .checker-head,
  .check-group,
  .check-result {
    padding-inline: 20px;
  }

  .choice-row {
    grid-template-columns: 1fr;
  }

  .price-table {
    display: block;
    overflow-x: auto;
  }

  .price-table th,
  .price-table td {
    min-width: 120px;
    padding: 16px 12px;
  }

  .service-grid,
  .concept-b .service-grid {
    grid-template-columns: 1fr;
  }

  .concept-b .service-item {
    grid-template-columns: auto 1fr;
  }

  .proof-document,
  .review-quote {
    min-height: 0;
    padding: 26px 22px;
  }

  .review-quote blockquote {
    font-size: 21px;
  }

  .case-feature-image {
    min-height: 350px;
  }

  .case-feature-copy {
    padding: 28px 22px;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric,
  .metric:nth-child(even) {
    padding: 16px 0;
    border-bottom: 1px solid var(--wing-line);
    border-left: 0;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .process-step,
  .process-step + .process-step,
  .process-step:nth-child(3),
  .process-step:nth-child(4) {
    min-height: 0;
    padding: 24px 0;
    border-top: 0;
    border-bottom: 1px solid var(--wing-line);
    border-left: 0;
  }

  .process-step h3 {
    margin-top: 14px;
  }

  .final-cta {
    padding: 64px 0 84px;
  }

  .final-cta-inner {
    grid-template-columns: 1fr;
  }

  .final-cta h2 {
    font-size: 35px;
  }

  .photo-checks {
    flex-wrap: wrap;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid > :first-child {
    grid-column: auto;
  }

  .mobile-action-bar {
    display: flex;
  }

  .concept-b-hero {
    min-height: 710px;
    padding: 120px 0 34px;
    background-position: 64% center;
  }

  .concept-b-hero h1 {
    font-size: 42px;
  }

  .concept-b-proof-line {
    flex-direction: column;
  }

  .concept-b-proof-line span + span {
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    border-left: 0;
  }

  .diagnostic-grid {
    gap: 26px;
  }

  .diagnostic-title {
    padding: 0 0 24px;
    border-right: 0;
    border-bottom: 1px solid var(--wing-line);
  }

  .diagnostic-title b {
    font-size: 48px;
  }

  .diagnostic-options {
    grid-template-columns: 1fr;
  }

  .page-hero {
    min-height: 330px;
    padding: 60px 0 42px;
  }

  .page-hero .page-title {
    font-size: 39px;
  }

  .detail-row {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

  .guide-step {
    gap: 14px;
    grid-template-columns: 1fr;
  }

  .contact-phone {
    padding: 26px 20px;
  }

  .contact-phone a {
    font-size: 27px;
  }

  .form-intro,
  .form-step,
  .form-submit {
    padding: 28px 20px;
  }

  .form-intro h2 {
    font-size: 29px;
  }

  .form-grid,
  .option-grid,
  .option-grid.cols-3 {
    grid-template-columns: 1fr;
  }

  .field-full {
    grid-column: auto;
  }

  .concept-b .form-intro,
  .concept-b .form-step,
  .concept-b .form-submit {
    padding-inline: 0;
  }

  .concept-b .form-step {
    gap: 24px;
    grid-template-columns: 1fr;
  }

  .concept-b .form-step-heading {
    display: flex;
  }

  .concept-b .form-step-index {
    display: inline-grid;
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    margin: 0;
    place-items: center;
    border-radius: 50%;
    background: var(--wing-primary);
    color: #fff;
    font-family: "Pretendard", "Noto Sans KR", Arial, sans-serif;
    font-size: 13px;
    text-align: center;
  }

  .form-result {
    padding: 20px 16px;
  }

  .form-result-actions {
    flex-direction: column;
  }

  .showcase-hero h1 {
    font-size: 39px;
  }

  .concept-card p {
    min-height: 0;
  }

  .concept-card img {
    height: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}