:root {
  --main: #041b44;
  --blue: #0094ff;
  --light: #1ea7ff;
  --bg: #f3f7fc;
  --text: #14213d;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a {
  text-decoration: none;
}

/* ================= HEADER ================= */

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background: rgba(4, 27, 68, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  max-width: 1500px;
  margin: auto;
  padding: 18px 40px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
}

.main-logo {
  height: 72px;
  width: auto;
  object-fit: contain;
}

nav {
  display: flex;
  gap: 34px;
  align-items: center;
  margin-left: auto;
}

nav a {
  color: white;
  font-weight: 800;
  font-size: 17px;
  position: relative;
  transition: 0.2s;
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -7px;

  width: 0;
  height: 2px;

  background: #1ea7ff;
  transition: 0.25s;
}

nav a:hover {
  color: #9dd8ff;
}

nav a:hover::after {
  width: 100%;
}

/* ================= HERO ================= */

.hero {
  min-height: 780px;

  background:
    linear-gradient(rgba(2, 15, 40, 0.78), rgba(2, 15, 40, 0.9)),
    url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?q=80&w=1600");

  background-size: cover;
  background-position: center;

  display: flex;
  align-items: center;
  justify-content: center;

  text-align: center;

  padding: 130px 20px 90px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";

  position: absolute;

  width: 900px;
  height: 900px;

  background: radial-gradient(circle, #0094ff33, transparent 70%);

  top: -240px;
  right: -220px;
}

.hero-content {
  position: relative;
  z-index: 2;

  width: 100%;
  max-width: 1100px;
}

.hero-badge {
  display: inline-block;

  padding: 10px 22px;

  border-radius: 999px;

  background: #0094ff22;
  border: 1px solid #1ea7ff66;

  color: #9dd8ff;

  margin-bottom: 28px;
  font-weight: 900;
}

.hero h1 {
  font-size: 68px;
  line-height: 1.15;

  color: white;

  font-weight: 900;
  letter-spacing: -3px;

  margin-bottom: 24px;
}

.hero p {
  color: #d7ecff;

  font-size: 22px;
  line-height: 1.8;

  margin-bottom: 42px;
}

/* ================= SHOP BUTTONS ================= */

.shop-buttons {
  display: flex;
  justify-content: center;
  align-items: center;

  gap: 26px;
  flex-wrap: wrap;

  margin-top: 34px;
}

.shop-btn {
  width: 420px;
  height: 116px;

  border-radius: 26px;

  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;

  transition: 0.25s;

  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.28);

  border: 1px solid rgba(255, 255, 255, 0.14);
}

.shop-btn:hover {
  transform: translateY(-6px);
}

.shop-icon {
  width: 54px;
  height: 54px;

  border-radius: 14px;

  background: white;

  display: flex;
  align-items: center;
  justify-content: center;

  font-size: 34px;
  font-weight: 900;
}

.shop-btn span {
  color: white;
  font-size: 28px;
  font-weight: 900;
}

.shop-links {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.shop-links a {
  flex: 1;
  text-align: center;
  padding: 10px;
  border-radius: 8px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
}

.naver-btn {
  background: linear-gradient(135deg, #03c75a, #00b04f);
}

.coupang-btn {
  background: linear-gradient(135deg, #e11937, #ff5a00);
}

/* ================= SECTION ================= */

.section {
  max-width: 1350px;
  margin: auto;

  padding: 90px 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title h2 {
  font-size: 46px;
  color: var(--main);

  font-weight: 900;
  letter-spacing: -2px;

  margin-bottom: 12px;
}

.section-title p {
  color: #667085;
  font-size: 18px;
}

/* ================= QUICK MENU ================= */

.quick-grid {
  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));

  gap: 26px;
}

.quick-card {
  background: white;
  border-radius: 28px;
  padding: 34px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.06);
  border: 1px solid #e4edf8;

  display: flex;
  flex-direction: column;
}
.quick-card a {
  margin-top: auto;
}

.quick-icon {
  width: 78px;
  height: 78px;

  border-radius: 22px;

  background: linear-gradient(135deg, #0094ff, #1ea7ff);

  display: flex;
  align-items: center;
  justify-content: center;

  font-size: 34px;
  color: white;

  margin-bottom: 24px;
}

.quick-card h3 {
  font-size: 28px;
  margin-bottom: 14px;
}

.quick-card p {
  color: #667085;
  line-height: 1.8;
  margin-bottom: 26px;
}

.quick-card a {
  color: #0094ff;
  font-weight: 900;
}
/* ================= POPULAR DOWNLOAD ================= */

.download-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 30px;
}

.download-box {
  background: white;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid #e5edf8;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.06);
}

.download-header {
  background: linear-gradient(135deg, #041b44, #005bbb);
  color: white;
  padding: 26px 30px;
}

.download-header h3 {
  font-size: 30px;
  font-weight: 900;
}

.download-content {
  padding: 30px;
}

.download-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  border: 1px solid #e5edf8;
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 16px;
  transition: 0.25s;
}

.download-item:hover {
  border-color: #0094ff;
  background: #f5fbff;
  transform: translateX(4px);
}

.file-left {
  display: flex;
  gap: 18px;
  align-items: center;
}

.file-icon {
  width: 62px;
  height: 62px;
  border-radius: 18px;
  background: #eaf5ff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex: none;
}

.file-text h4 {
  font-size: 20px;
  margin-bottom: 6px;
}

.file-text p {
  color: #667085;
  font-size: 14px;
}

.download-btn {
  min-width: 120px;
  height: 50px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0094ff, #1ea7ff);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
}
/* ================= YOUTUBE BANNER ================= */

.youtube-mini-section {
  padding-top: 20px;
}

.youtube-mini-card {
  max-width: 1100px;
  margin: 0 auto;
  background: linear-gradient(135deg, #041b44, #005bbb);
  border-radius: 28px;
  padding: 34px 42px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.08);
}

.youtube-mini-card h2 {
  font-size: 34px;
  margin-bottom: 10px;
}

.youtube-mini-card p {
  font-size: 17px;
  line-height: 1.7;
  color: #d7ecff;
}

.youtube-mini-btn {
  background: #ff003c;
  color: white;
  padding: 16px 28px;
  border-radius: 12px;
  font-weight: 900;
  white-space: nowrap;
}

@media (max-width: 850px) {
  .youtube-mini-card {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
}
.blank-card {
  background: transparent;
  border: none;
  box-shadow: none;
}

/* ================= SUPPORT STRIP ================= */

.support-strip {
  background: #fff1e8;

  border-top: 1px solid #f0d1bf;
  border-bottom: 1px solid #f0d1bf;

  padding: 50px 20px;

  margin-top: 90px;
}

.support-grid {
  max-width: 1200px;

  margin: auto;

  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));

  gap: 24px;
}

.support-box {
  text-align: center;

  background: white;

  border-radius: 24px;

  padding: 30px 20px;

  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.06);
}

.support-box h3 {
  font-size: 26px;
  font-weight: 900;

  margin-bottom: 10px;
}

.support-box .phone {
  font-size: 34px;
  font-weight: 900;

  color: #000;

  margin-bottom: 14px;
}

.support-box p {
  font-weight: 800;
  line-height: 1.7;
}

.red {
  color: #d60000;
}
/* ================= FOOTER ================= */

footer {
  background: #041b44;
  color: white;
}

.footer-inner {
  max-width: 1350px;
  margin: auto;

  padding: 64px 20px 42px;
}

.footer-top {
  display: grid;

  grid-template-columns: 2fr 1fr 1fr;

  gap: 50px;
}

.footer-logo img {
  height: 64px;
  margin-bottom: 24px;
}

.footer-desc {
  color: #b7d8ff;
  line-height: 1.9;
}

.footer-menu h3 {
  font-size: 22px;
  margin-bottom: 20px;
}

.footer-menu a {
  display: block;

  color: #b7d8ff;

  margin-bottom: 14px;
}

.footer-menu a:hover {
  color: white;
}

.copy {
  border-top: 1px solid rgba(255, 255, 255, 0.08);

  margin-top: 50px;
  padding-top: 24px;

  text-align: center;
  color: #9ab6d7;
}

/* ================= MOBILE ================= */

@media (max-width: 980px) {
  .header-inner {
    flex-direction: column;
    gap: 18px;
    padding: 18px 20px;
  }

  .main-logo {
    height: 58px;
  }

  nav {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    min-height: auto;
    padding: 170px 18px 70px;
  }

  .hero h1 {
    font-size: 42px;
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 18px;
  }

  .shop-btn {
    width: 100%;
    height: 96px;
  }

  .shop-btn span {
    font-size: 22px;
  }

  .section {
    padding: 64px 18px;
  }

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

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