:root {
  --bg: #080a0d;
  --panel: rgba(255, 255, 255, 0.075);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --text: #f5f5f0;
  --muted: rgba(245, 245, 240, 0.64);
  --line: rgba(255, 255, 255, 0.12);
  --accent: #b7ffdc;
  --accent-2: #8ea7ff;
  --danger: #ff8a8a;
  --easy: #76f4b3;
  --medium: #f6ce6a;
  --hard: #ff8686;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: "Inter", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    radial-gradient(circle at 20% 8%, rgba(183, 255, 220, 0.16), transparent 27rem),
    radial-gradient(circle at 80% 20%, rgba(142, 167, 255, 0.15), transparent 26rem),
    radial-gradient(circle at 50% 90%, rgba(255, 255, 255, 0.08), transparent 24rem),
    var(--bg);
  overflow-x: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

button {
  cursor: pointer;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  z-index: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.8'/%3E%3C/svg%3E");
}

.cursor-glow {
  position: fixed;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(183, 255, 220, 0.11), transparent 68%);
  transform: translate(-50%, -50%);
  z-index: 1;
  transition: opacity 0.2s ease;
}

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 76px;
  padding: 18px clamp(18px, 4vw, 52px);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(8, 10, 13, 0.86), rgba(8, 10, 13, 0.34));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 0;
  color: var(--text);
  background: transparent;
  font-weight: 700;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, #fff, #b7ffdc 48%, #8ea7ff);
  color: #080a0d;
  box-shadow: 0 10px 40px rgba(183, 255, 220, 0.22);
}

.brand-text {
  letter-spacing: -0.02em;
}

.menu-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-content: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  transition: transform 0.25s ease, background 0.25s ease;
}

.menu-toggle:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.12);
}

.menu-toggle span {
  width: 17px;
  height: 2px;
  display: block;
  background: var(--text);
  border-radius: 999px;
}

.side-menu {
  position: fixed;
  top: 16px;
  right: 16px;
  width: min(360px, calc(100vw - 32px));
  height: calc(100vh - 32px);
  padding: 22px;
  z-index: 40;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 30px;
  background: rgba(18, 21, 25, 0.86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(26px);
  transform: translateX(110%);
  transition: transform 0.36s cubic-bezier(.2,.8,.2,1);
}

.side-menu.open {
  transform: translateX(0);
}

.side-menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 12px;
}

.side-menu-head button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: transparent;
  font-size: 24px;
}

.side-menu-list {
  display: grid;
  gap: 10px;
  margin-top: 30px;
}

.side-menu-list button {
  width: 100%;
  padding: 18px;
  border: 1px solid transparent;
  border-radius: 20px;
  text-align: left;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  transition: background 0.2s ease, transform 0.2s ease, border 0.2s ease;
}

.side-menu-list button:hover:not(:disabled) {
  transform: translateX(-4px);
  border-color: rgba(183, 255, 220, 0.28);
  background: rgba(183, 255, 220, 0.08);
}

.side-menu-list .soon {
  color: rgba(245, 245, 240, 0.36);
  cursor: not-allowed;
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 35;
  pointer-events: none;
  opacity: 0;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(4px);
  transition: opacity 0.25s ease;
}

.overlay.open {
  pointer-events: auto;
  opacity: 1;
}

main {
  position: relative;
  z-index: 5;
  padding-top: 76px;
}

.page {
  display: none;
  min-height: calc(100vh - 76px);
  padding: clamp(32px, 6vw, 80px) clamp(18px, 5vw, 72px) 72px;
}

.page.active {
  display: block;
}

.hero-shell {
  width: min(1180px, 100%);
  min-height: calc(100vh - 140px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: clamp(36px, 6vw, 80px);
  align-items: center;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy h1,
.practice-hero h1 {
  margin: 0;
  font-size: clamp(54px, 8vw, 112px);
  line-height: 0.92;
  letter-spacing: -0.08em;
}

.hero-desc,
.practice-hero p {
  max-width: 680px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-btn,
.ghost-btn,
.tool-btn,
.danger-btn,
.user-input-row button {
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background 0.2s ease, border 0.2s ease;
}

.primary-btn,
.user-input-row button {
  color: #08100c;
  border: 0;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--accent));
  box-shadow: 0 16px 50px rgba(183, 255, 220, 0.16);
}

.ghost-btn,
.tool-btn {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.danger-btn {
  color: var(--danger);
  background: rgba(255, 138, 138, 0.08);
}

.primary-btn:hover,
.ghost-btn:hover,
.tool-btn:hover,
.danger-btn:hover,
.user-input-row button:hover {
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
}

.orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(8px);
  opacity: 0.72;
}

.orb-a {
  width: 310px;
  height: 310px;
  top: 40px;
  left: 20px;
  background: radial-gradient(circle, rgba(183, 255, 220, 0.52), transparent 65%);
}

.orb-b {
  width: 360px;
  height: 360px;
  right: 0;
  bottom: 20px;
  background: radial-gradient(circle, rgba(142, 167, 255, 0.42), transparent 65%);
}

.glass-card {
  position: relative;
  z-index: 2;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255,255,255,0.14), rgba(255,255,255,0.055));
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.main-card {
  width: min(420px, 100%);
  padding: 28px;
}

.card-topline {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent);
}

.main-card h2 {
  margin: 54px 0 12px;
  font-size: 44px;
  letter-spacing: -0.06em;
}

.main-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 28px;
}

.mini-grid div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.18);
}

.mini-grid strong,
.mini-grid span {
  display: block;
}

.mini-grid span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.floating-chip {
  position: absolute;
  z-index: 3;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
  animation: floaty 5.4s ease-in-out infinite;
}

.chip-1 { left: 8%; top: 26%; }
.chip-2 { right: 8%; top: 18%; animation-delay: -1.8s; }
.chip-3 { left: 20%; bottom: 16%; animation-delay: -3s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.intro-cards,
.dashboard,
.toolbar,
.problem-list,
.practice-hero {
  width: min(1180px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.intro-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.profile-card,
.progress-card,
.category-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  backdrop-filter: blur(20px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.18);
}

.profile-card {
  padding: 26px;
}

.profile-card span {
  color: var(--accent);
  font-weight: 800;
}

.profile-card h3 {
  margin: 36px 0 12px;
  font-size: 24px;
}

.profile-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.practice-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 24px;
  align-items: end;
}

.practice-hero h1 {
  font-size: clamp(48px, 7vw, 92px);
}

.user-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.065);
  backdrop-filter: blur(18px);
}

.user-panel label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.user-input-row {
  display: flex;
  gap: 8px;
}

.user-input-row input,
.search-box input,
.toolbar select,
.note-input,
.status-select {
  color: var(--text);
  border: 1px solid var(--line);
  outline: none;
  background: rgba(0, 0, 0, 0.18);
}

.user-input-row input {
  min-width: 0;
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border-radius: 999px;
}

.user-panel small {
  display: block;
  margin-top: 10px;
  color: rgba(245, 245, 240, 0.46);
}

.dashboard {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 14px;
  margin-top: 38px;
}

.progress-card {
  min-height: 132px;
  padding: 22px;
}

.total-progress {
  display: flex;
  gap: 20px;
  align-items: center;
}

.progress-card .label {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.progress-card h2 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -0.04em;
}

.progress-card p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
}

.progress-ring {
  width: 92px;
  height: 92px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--progress), rgba(255,255,255,0.12) 0deg);
  position: relative;
}

.progress-ring::after {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: #111419;
}

.progress-ring span {
  position: relative;
  z-index: 1;
  font-weight: 800;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 160px 160px auto auto;
  gap: 10px;
  margin-top: 18px;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
}

.search-box span {
  color: var(--muted);
  font-size: 20px;
}

.search-box input {
  width: 100%;
  border: 0;
  background: transparent;
}

.toolbar select {
  padding: 0 14px;
  border-radius: 999px;
}

.problem-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.category-card {
  overflow: hidden;
}

.category-head {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border: 0;
  color: var(--text);
  background: transparent;
  text-align: left;
}

.category-title {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.category-title strong {
  font-size: 20px;
  letter-spacing: -0.03em;
}

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

.category-progress {
  min-width: 78px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-align: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
}

.chevron {
  transition: transform 0.2s ease;
}

.category-card.open .chevron {
  transform: rotate(180deg);
}

.problem-table-wrap {
  display: none;
  padding: 0 12px 12px;
}

.category-card.open .problem-table-wrap {
  display: block;
}

.problem-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 20px;
}

.problem-table th,
.problem-table td {
  padding: 14px 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  vertical-align: middle;
}

.problem-table th {
  color: rgba(245, 245, 240, 0.52);
  font-size: 12px;
  font-weight: 700;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.problem-table tr {
  background: rgba(0, 0, 0, 0.08);
}

.problem-table tr:hover {
  background: rgba(255, 255, 255, 0.045);
}

.problem-title {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.problem-title:hover {
  color: var(--accent);
}

.check-cell {
  width: 44px;
}

.solve-check {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
}

.diff-badge,
.status-badge {
  display: inline-flex;
  min-width: 72px;
  justify-content: center;
  padding: 6px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.diff-Easy { color: #06160f; background: var(--easy); }
.diff-Medium { color: #1d1500; background: var(--medium); }
.diff-Hard { color: #1f0808; background: var(--hard); }

.status-select,
.note-input {
  width: 100%;
  border-radius: 14px;
  padding: 10px 12px;
}

.status-select {
  min-width: 140px;
}

.note-input {
  min-width: 180px;
}

.empty-state {
  padding: 36px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  animation: revealUp 0.75s ease forwards;
}

.delay-1 { animation-delay: 0.12s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.28s; }
.delay-4 { animation-delay: 0.36s; }

@keyframes revealUp {
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .hero-shell,
  .practice-hero,
  .dashboard,
  .intro-cards {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 420px;
  }

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

  .search-box {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .page {
    padding-left: 14px;
    padding-right: 14px;
  }

  .hero-copy h1,
  .practice-hero h1 {
    font-size: 52px;
  }

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

  .problem-table,
  .problem-table tbody,
  .problem-table tr,
  .problem-table td {
    display: block;
    width: 100%;
  }

  .problem-table thead {
    display: none;
  }

  .problem-table tr {
    padding: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .problem-table td {
    padding: 8px 4px;
    border: 0;
  }

  .check-cell {
    width: 100%;
  }

  .category-head {
    grid-template-columns: 1fr auto;
  }

  .category-progress {
    display: none;
  }
}

/* ===== Upgraded personal website home effects ===== */
.home-page {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.hero-particles,
.home-grid-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-particles {
  z-index: -2;
  opacity: 0.8;
}

.home-grid-bg {
  z-index: -3;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: radial-gradient(circle at 50% 38%, black, transparent 72%);
  animation: gridDrift 18s linear infinite;
}

@keyframes gridDrift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(54px, 54px, 0); }
}

.portfolio-hero {
  position: relative;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(135deg, #ffffff 0%, #b7ffdc 42%, #8ea7ff 76%, #ffffff 100%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shimmerText 5s ease-in-out infinite;
}

@keyframes shimmerText {
  0%, 100% { background-position: 0% center; }
  50% { background-position: 100% center; }
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-meta-strip span {
  padding: 9px 13px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  color: rgba(245, 245, 240, 0.74);
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(16px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.orbit-system {
  position: relative;
  width: min(520px, 90vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  transform-style: preserve-3d;
  animation: softHover 6s ease-in-out infinite;
}

@keyframes softHover {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.orbit {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  box-shadow: inset 0 0 40px rgba(183, 255, 220, 0.04);
}

.orbit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -5px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #b7ffdc;
  box-shadow: 0 0 22px rgba(183, 255, 220, 0.9);
}

.orbit-one {
  width: 82%;
  height: 82%;
  animation: orbitSpin 16s linear infinite;
}

.orbit-two {
  width: 64%;
  height: 64%;
  transform: rotate(58deg);
  animation: orbitSpinReverse 19s linear infinite;
}

.orbit-three {
  width: 96%;
  height: 45%;
  transform: rotate(-20deg);
  animation: orbitPulse 5s ease-in-out infinite;
}

@keyframes orbitSpin {
  to { transform: rotate(360deg); }
}

@keyframes orbitSpinReverse {
  from { transform: rotate(58deg); }
  to { transform: rotate(-302deg); }
}

@keyframes orbitPulse {
  0%, 100% { opacity: 0.4; transform: rotate(-20deg) scale(1); }
  50% { opacity: 0.78; transform: rotate(-20deg) scale(1.04); }
}

.core-card {
  width: min(360px, 84%);
  padding: 30px;
  transform-style: preserve-3d;
  transition: transform 0.18s ease, border-color 0.2s ease, background 0.2s ease;
}

.core-card::after,
.feature-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent 30%, rgba(183, 255, 220, 0.08));
  opacity: 0;
  transition: opacity 0.2s ease;
}

.core-card:hover::after,
.feature-card:hover::after {
  opacity: 1;
}

.core-card h2 {
  margin: 78px 0 10px;
  font-size: clamp(42px, 6vw, 68px);
  letter-spacing: -0.08em;
}

.core-card p {
  min-height: 28px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.signal-bars {
  display: flex;
  align-items: end;
  gap: 8px;
  height: 54px;
  margin-top: 30px;
}

.signal-bars span {
  width: 100%;
  border-radius: 999px;
  background: linear-gradient(to top, rgba(183, 255, 220, 0.9), rgba(142, 167, 255, 0.72));
  animation: signalMove 1.2s ease-in-out infinite;
}

.signal-bars span:nth-child(1) { height: 32%; animation-delay: -0.1s; }
.signal-bars span:nth-child(2) { height: 62%; animation-delay: -0.4s; }
.signal-bars span:nth-child(3) { height: 42%; animation-delay: -0.7s; }
.signal-bars span:nth-child(4) { height: 78%; animation-delay: -0.2s; }
.signal-bars span:nth-child(5) { height: 50%; animation-delay: -0.5s; }

@keyframes signalMove {
  0%, 100% { transform: scaleY(0.72); opacity: 0.58; }
  50% { transform: scaleY(1); opacity: 1; }
}

.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 240px;
  transition: transform 0.18s ease, border-color 0.2s ease, background 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(183, 255, 220, 0.32);
  background: rgba(255, 255, 255, 0.095);
}

.showcase-section {
  width: min(1180px, 100%);
  margin: 18px auto 0;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
  align-items: end;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.045)),
    radial-gradient(circle at 90% 10%, rgba(183, 255, 220, 0.16), transparent 24rem);
  backdrop-filter: blur(22px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.18);
}

.showcase-section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.06em;
}

.showcase-section p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

@media (max-width: 980px) {
  .showcase-section {
    grid-template-columns: 1fr;
  }

  .orbit-system {
    width: min(450px, 92vw);
  }
}

@media (max-width: 720px) {
  .hero-meta-strip span {
    font-size: 13px;
  }

  .orbit-system {
    width: min(360px, 92vw);
  }

  .core-card h2 {
    margin-top: 56px;
  }
}