:root {
  --ink: #07372f;
  --ink-deep: #032c26;
  --ink-darker: #02231e;
  --mint: #7ff0d6;
  --mint-bright: #8bf6df;
  --white: #ffffff;
  --line: rgba(127, 240, 214, 0.18);
  --goal-sky: #d7e9e5;
  --goal-ink: #0b312b;
  --goal-copy: rgba(11, 49, 43, 0.68);
  --goal-line: rgba(11, 49, 43, 0.12);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--white);
  background: var(--ink-darker);
  font-family:
    Inter,
    Pretendard,
    "Noto Sans KR",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  padding: 7px 18px 0;
}

.nav-shell {
  width: min(900px, calc(100% - 24px));
  min-height: 48px;
  margin: 0 auto;
  padding: 6px 8px 6px 16px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 30px rgba(2, 34, 29, 0.16);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.brand-symbol {
  position: relative;
  width: 22px;
  height: 16px;
  display: inline-block;
}

.brand-symbol i {
  position: absolute;
  top: 2px;
  width: 11px;
  height: 11px;
  border-radius: 70% 40% 70% 40%;
  background: var(--ink);
  transform: rotate(45deg);
}

.brand-symbol i:first-child {
  left: 1px;
}

.brand-symbol i:last-child {
  right: 1px;
  transform: rotate(-45deg);
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
}

.main-nav a,
.nav-actions a {
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.main-nav a {
  position: relative;
  padding: 8px 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  right: 50%;
  bottom: 3px;
  left: 50%;
  height: 1px;
  background: var(--ink);
  transition:
    right 0.2s ease,
    left 0.2s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  right: 0;
  left: 0;
}

.nav-actions {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-actions .plain-link {
  max-width: 95px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.plain-link {
  opacity: 0.55;
}

.login-link {
  padding: 9px 17px;
  border-radius: 999px;
  background: var(--mint);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
}

.dark-section {
  color: var(--white);
  background: var(--ink-deep);
}

.developer-hero {
  position: relative;
  min-height: 430px;
  padding: 104px 24px 72px;
  display: grid;
  place-items: center;
  overflow: hidden;
  text-align: center;
}

.hero-haze {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 10% 40%,
      rgba(20, 111, 91, 0.18),
      transparent 30%
    ),
    radial-gradient(
      circle at 84% 12%,
      rgba(127, 240, 214, 0.08),
      transparent 25%
    );
}

.developer-hero-inner {
  position: relative;
  width: min(900px, 100%);
}

.eyebrow,
.section-label {
  margin: 0;
  color: var(--mint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.developer-hero h1,
.goal-copy h2,
.principles-section h2,
.cta-inner h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -0.045em;
}

.developer-hero h1 {
  margin: 18px 0 0;
  font-size: clamp(54px, 6vw, 78px);
  line-height: 0.98;
}

.hero-copy {
  max-width: 700px;
  margin: 22px auto 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  line-height: 1.7;
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
  gap: 16px;
}

.button {
  min-width: 165px;
  height: 46px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid transparent;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
  transition:
    transform 0.2s ease,
    background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--ink);
  background: var(--mint-bright);
}

.button-outline {
  border-color: rgba(139, 246, 223, 0.38);
  color: var(--mint-bright);
}

.section-inner {
  width: min(1030px, calc(100% - 48px));
  margin: 0 auto;
}

.goal-section {
  padding: 76px 0 82px;
  background: var(--goal-sky);
}

.goal-section .section-inner {
  width: min(980px, calc(100% - 48px));
}

.goal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.92fr);
  gap: 74px;
  align-items: center;
}

.goal-copy {
  max-width: 470px;
  color: var(--goal-ink);
}

.goal-copy .section-label {
  color: rgba(11, 49, 43, 0.45);
}

.goal-copy h2 {
  margin: 14px 0 0;
  color: var(--goal-ink);
  font-size: clamp(52px, 5vw, 66px);
  line-height: 1;
}

.goal-copy p:not(.section-label) {
  margin: 24px 0 0;
  color: var(--goal-copy);
  font-size: 12px;
  line-height: 1.72;
}

.goal-copy p:not(.section-label) + p {
  margin-top: 22px;
}

.goal-cards {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.goal-cards article {
  min-height: 74px;
  padding: 16px 17px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--goal-line);
  background: rgba(255, 255, 255, 0.14);
}

.goal-cards h3 {
  margin: 0;
  color: var(--goal-ink);
  font-size: 13px;
  line-height: 1.25;
}

.goal-cards p {
  margin: 7px 0 0;
  color: rgba(11, 49, 43, 0.55);
  font-size: 10px;
  line-height: 1.55;
}

.principles-section {
  padding: 84px 0 96px;
  background: var(--ink-darker);
}

.principles-section h2 {
  margin: 16px 0 0;
  font-size: clamp(48px, 5vw, 68px);
}

.principle-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.principle-grid article {
  min-height: 220px;
  padding: 27px 23px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.principle-grid article:first-child {
  border-left: 1px solid var(--line);
}

.principle-grid span {
  color: var(--mint);
  font-size: 10px;
  letter-spacing: 0.18em;
}

.principle-grid h3 {
  margin: 48px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 29px;
  font-weight: 500;
}

.principle-grid p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 11px;
  line-height: 1.7;
}

.cta-section {
  padding: 104px 0;
  text-align: center;
}

.cta-inner h2 {
  margin: 17px 0 0;
  font-size: clamp(48px, 5.5vw, 72px);
  line-height: 1.02;
}

.cta-inner > p:last-of-type {
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.7;
}

.site-footer {
  padding: 52px 0 35px;
  color: rgba(255, 255, 255, 0.68);
  background: #053129;
}

.footer-inner {
  width: min(1030px, calc(100% - 48px));
  margin: 0 auto;
}

.footer-links {
  padding-bottom: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 60px;
}

.footer-links div {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-links strong {
  color: var(--white);
  font-size: 12px;
}

.footer-links a {
  width: fit-content;
  font-size: 11px;
  opacity: 0.62;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom strong {
  color: var(--white);
  font-size: 18px;
  letter-spacing: 0.08em;
}

.footer-bottom p {
  margin: 12px 0 0;
  font-size: 10px;
  opacity: 0.52;
}

@media (max-width: 900px) {
  .goal-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
  }

  .goal-copy {
    max-width: 620px;
  }

  .goal-cards {
    max-width: 620px;
  }

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

  .principle-grid article,
  .principle-grid article:first-child {
    border-left: 1px solid var(--line);
  }

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

@media (max-width: 860px) {
  .nav-shell {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .menu-toggle {
    width: 36px;
    height: 36px;
    display: grid;
    place-content: center;
    gap: 5px;
  }

  .menu-toggle span {
    width: 18px;
    height: 1px;
    display: block;
    background: var(--ink);
  }

  .main-nav,
  .nav-actions {
    display: none;
  }

  .nav-shell.menu-open {
    grid-template-columns: 1fr auto;
    border-radius: 24px;
  }

  .nav-shell.menu-open .main-nav,
  .nav-shell.menu-open .nav-actions {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    padding: 8px 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding-inline: 4px;
  }

  .nav-shell {
    width: calc(100% - 12px);
  }

  .developer-hero {
    min-height: 560px;
    padding-top: 118px;
  }

  .developer-hero h1 {
    font-size: 48px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .button {
    width: min(270px, 100%);
  }

  .section-inner,
  .goal-section .section-inner {
    width: calc(100% - 32px);
  }

  .goal-section,
  .principles-section,
  .cta-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .goal-grid {
    gap: 38px;
  }

  .goal-copy h2 {
    font-size: 50px;
  }

  .goal-cards article {
    min-height: 76px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}
.brand strong {
  font-weight: 500;
}
.brand strong {
  display: inline-flex;
  align-items: baseline;
  font-size: 21px;
  font-weight: 300;
  letter-spacing: -0.05em;
}

.brand-hyper {
  display: inline-block;
  font-weight: 300;
  font-style: normal;
}

.brand-liquid {
  display: inline-block;
  font-weight: 300;
  font-style: normal;
  transform: skewX(-12deg);
  transform-origin: center bottom;
  margin-left: 1px;
}
.guest-login-link {
  padding: 9px 4px;
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
  opacity: 0.68;
  transition: opacity 0.2s ease;
}

.guest-login-link:hover {
  opacity: 1;
}

.signup-link {
  padding: 9px 17px;
  border-radius: 999px;
  color: var(--ink);
  background: var(--mint);
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.signup-link:hover {
  background: var(--mint-bright);
  transform: translateY(-1px);
}
.resources-section {
  padding: 92px 0 100px;
  color: var(--goal-ink);
  background: #d8f1ed;
}

.resources-section .section-inner {
  width: min(1030px, calc(100% - 48px));
}

.resources-section .section-label {
  color: rgba(11, 49, 43, 0.5);
}

.resources-section h2 {
  margin: 16px 0 0;
  color: var(--goal-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(48px, 5vw, 64px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
}

.resources-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 32px;
}

.resource-item {
  min-height: 142px;
  padding: 23px 0 26px;
  border-top: 1px solid rgba(11, 49, 43, 0.22);
}

.resource-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.resource-title h3 {
  margin: 0;
  color: var(--goal-ink);
  font-size: 14px;
  font-weight: 800;
}

.resource-item > p {
  margin: 13px 0 0;
  color: rgba(11, 49, 43, 0.62);
  font-size: 12px;
  line-height: 1.7;
}

.resource-item > a {
  margin-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: rgba(12, 126, 104, 0.75);
  font-size: 10px;
  letter-spacing: 0.05em;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.resource-item > a:hover {
  opacity: 0.7;
  transform: translateX(2px);
}

.resource-code {
  color: #239d88;
  font-size: 19px;
  font-weight: 500;
  line-height: 1;
}

.resource-book {
  position: relative;
  width: 20px;
  height: 18px;
  display: inline-flex;
  gap: 2px;
}

.resource-book i {
  width: 8px;
  height: 14px;
  display: block;
  border: 1.5px solid #239d88;
  border-radius: 2px 2px 1px 1px;
}

.resource-book i:first-child {
  transform: skewY(5deg);
}

.resource-book i:last-child {
  transform: skewY(-5deg);
}

.resource-document {
  position: relative;
  width: 17px;
  height: 19px;
  display: inline-block;
  border: 1.5px solid #239d88;
  border-radius: 2px;
}

.resource-document::before,
.resource-document::after,
.resource-document i {
  content: "";
  position: absolute;
  left: 4px;
  width: 7px;
  height: 1px;
  background: #239d88;
}

.resource-document::before {
  top: 5px;
}

.resource-document::after {
  top: 8px;
}

.resource-document i {
  top: 11px;
}

.resource-layers {
  position: relative;
  width: 20px;
  height: 18px;
  display: inline-block;
}

.resource-layers i {
  position: absolute;
  left: 2px;
  width: 16px;
  height: 8px;
  border: 1.5px solid #239d88;
  border-radius: 2px;
  transform: rotate(30deg) skewX(-30deg) scaleY(0.86);
}

.resource-layers i:nth-child(1) {
  top: 0;
}

.resource-layers i:nth-child(2) {
  top: 4px;
}

.resource-layers i:nth-child(3) {
  top: 8px;
}

.goal-section {
  padding: 94px 0 96px;
  background: var(--ink-deep);
}

.goal-section .section-inner {
  width: min(1030px, calc(100% - 48px));
}

.goal-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 1.1fr);
  gap: 78px;
  align-items: center;
}

.goal-copy {
  max-width: 500px;
  color: var(--white);
}

.goal-copy .section-label {
  color: var(--mint);
}

.goal-copy h2 {
  margin: 15px 0 0;
  color: var(--white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(52px, 5vw, 66px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
}

.goal-copy p:not(.section-label) {
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  line-height: 1.75;
}

.goal-copy p:not(.section-label) + p {
  margin-top: 25px;
}

.goal-cards {
  display: grid;
  gap: 13px;
}

.goal-cards article {
  min-height: 82px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(127, 240, 214, 0.15);
  background: rgba(255, 255, 255, 0.015);
}

.goal-cards h3 {
  margin: 0;
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
}

.goal-cards p {
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
  line-height: 1.55;
}

.developer-cta {
  padding: 102px 0 110px;
  text-align: center;
  background: var(--ink-darker);
}

.developer-cta-inner {
  width: min(900px, calc(100% - 48px));
}

.developer-cta h2 {
  margin: 0;
  color: var(--white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(48px, 5.5vw, 68px);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.developer-cta p {
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
  line-height: 1.7;
}

.developer-cta .hero-actions {
  margin-top: 34px;
}

@media (max-width: 900px) {
  .resources-grid {
    grid-template-columns: 1fr;
  }

  .goal-grid {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .goal-copy {
    max-width: 650px;
  }

  .goal-cards {
    max-width: 650px;
  }
}

@media (max-width: 640px) {
  .resources-section {
    padding: 74px 0 78px;
  }

  .resources-section .section-inner,
  .goal-section .section-inner,
  .developer-cta-inner {
    width: calc(100% - 32px);
  }

  .resources-section h2 {
    font-size: 45px;
  }

  .resources-grid {
    margin-top: 34px;
  }

  .resource-item {
    min-height: auto;
    padding: 22px 0 24px;
  }

  .goal-section {
    padding: 74px 0 78px;
  }

  .goal-copy h2 {
    font-size: 50px;
  }

  .developer-cta {
    padding: 80px 0 88px;
  }

  .developer-cta h2 {
    font-size: 43px;
  }
}