/* ============================================================
   Kusic — 노래봇 소개 사이트 공통 스타일
   Dark theme inspired by Toss Bank
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;600;700;900&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ── Reset & Base ─────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #080810;
  --bg-secondary: #0f0f1a;
  --bg-card: #13131f;
  --bg-card-hover: #1a1a2e;
  --bg-nav: rgba(8, 8, 16, 0.85);

  --accent-1: #6c63ff;
  /* 보라 */
  --accent-2: #00ccff;
  /* 시안 */
  --accent-3: #b44fff;
  /* 연보라 */
  --grad-main: linear-gradient(135deg, #6c63ff, #00ccff);
  --grad-card: linear-gradient(145deg, #1a1a2e, #0f0f1a);
  --grad-hero: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(108, 99, 255, .35) 0%, transparent 70%);

  --text-primary: #f0f0f8;
  --text-secondary: #9090b0;
  --text-muted: #5a5a7a;

  --border: rgba(255, 255, 255, .07);
  --border-card: rgba(108, 99, 255, .2);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-card: 0 8px 32px rgba(0, 0, 0, .5);
  --shadow-glow: 0 0 40px rgba(108, 99, 255, .3);

  --transition: all .25s cubic-bezier(.4, 0, .2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans KR', 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ─────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--accent-1);
  border-radius: 3px;
}

/* ── Nav ───────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 64px;
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -.5px;
}

.nav-logo img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

.nav-logo span {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: .9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  background: var(--grad-main);
  color: #fff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: .9rem;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(108, 99, 255, .4);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(108, 99, 255, .5);
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 4px 30px rgba(108, 99, 255, .5);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(108, 99, 255, .6);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-card);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 20px 44px;
  font-size: 1.1rem;
}

/* ── Section Layout ─────────────────────────────────────────── */
section {
  padding: 100px 40px;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-1);
  background: rgba(108, 99, 255, .12);
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 40px 80px;
  background: var(--grad-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%236c63ff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1140px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  background: rgba(108, 99, 255, .12);
  border: 1px solid rgba(108, 99, 255, .3);
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent-1);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: #00e676;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1)
  }

  50% {
    opacity: .5;
    transform: scale(1.3)
  }
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.hero-title .gradient {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
}

.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-stat-label {
  font-size: .82rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-orb {
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(108, 99, 255, .45), rgba(0, 204, 255, .25), transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0)
  }

  50% {
    transform: translateY(-20px)
  }
}

.hero-bot-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 3px solid rgba(108, 99, 255, .5);
  box-shadow: 0 0 60px rgba(108, 99, 255, .4), 0 0 120px rgba(0, 204, 255, .2);
  object-fit: cover;
}

/* Rings */
.hero-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(108, 99, 255, .15);
  animation: spin-ring linear infinite;
}

.hero-ring:nth-child(1) {
  width: 280px;
  height: 280px;
  animation-duration: 20s;
}

.hero-ring:nth-child(2) {
  width: 360px;
  height: 360px;
  animation-duration: 30s;
  animation-direction: reverse;
}

.hero-ring:nth-child(3) {
  width: 420px;
  height: 420px;
  animation-duration: 40s;
  border-color: rgba(0, 204, 255, .08);
}

@keyframes spin-ring {
  from {
    transform: rotate(0deg)
  }

  to {
    transform: rotate(360deg)
  }
}

/* Floating notes */
.music-note {
  position: absolute;
  font-size: 1.5rem;
  animation: note-float 4s ease-in-out infinite;
  opacity: .6;
}

.music-note:nth-child(4) {
  top: 8%;
  right: 12%;
  animation-delay: 0s;
}

.music-note:nth-child(5) {
  top: 65%;
  right: 5%;
  animation-delay: 1s;
}

.music-note:nth-child(6) {
  top: 20%;
  left: 5%;
  animation-delay: 2s;
}

.music-note:nth-child(7) {
  bottom: 12%;
  left: 18%;
  animation-delay: 1.5s;
}

@keyframes note-float {

  0%,
  100% {
    transform: translateY(0) rotate(-10deg)
  }

  50% {
    transform: translateY(-12px) rotate(10deg)
  }
}

/* ── Features ───────────────────────────────────────────────── */
.features {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 60px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(108, 99, 255, .07), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-card);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.icon-purple {
  background: rgba(108, 99, 255, .15);
}

.icon-cyan {
  background: rgba(0, 204, 255, .15);
}

.icon-pink {
  background: rgba(180, 79, 255, .15);
}

.icon-green {
  background: rgba(0, 230, 118, .15);
}

.icon-orange {
  background: rgba(255, 149, 0, .15);
}

.icon-blue {
  background: rgba(0, 122, 255, .15);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-desc {
  font-size: .92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Why Kusic ──────────────────────────────────────────────── */
.why {
  background: var(--bg-primary);
}

.why-grid {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: 60px;
  align-items: center;
  margin-top: 60px;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.why-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: var(--transition);
}

.why-item:hover {
  border-color: var(--border-card);
  transform: translateX(6px);
}

.why-item-num {
  min-width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--grad-main);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .85rem;
  font-weight: 800;
}

.why-item-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.why-item-desc {
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.why-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-mock {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 28px;
  width: 100%;
  box-shadow: var(--shadow-glow);
}

.player-mock-title {
  font-size: .75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.player-track {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 20px;
}

.player-thumb {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.player-track-title {
  font-weight: 700;
  font-size: .95rem;
  margin-bottom: 2px;
}

.player-track-artist {
  font-size: .82rem;
  color: var(--text-muted);
}

.player-bar-wrap {
  margin-bottom: 16px;
}

.player-bar {
  height: 4px;
  background: rgba(255, 255, 255, .08);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 6px;
}

.player-bar-fill {
  height: 100%;
  width: 60%;
  background: var(--grad-main);
  border-radius: 2px;
  animation: progress-anim 3s ease-in-out infinite alternate;
}

@keyframes progress-anim {
  from {
    width: 20%
  }

  to {
    width: 85%
  }
}

.player-times {
  display: flex;
  justify-content: space-between;
  font-size: .78rem;
  color: var(--text-muted);
}

.player-controls {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-bottom: 18px;
}

.ctrl-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .05);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.ctrl-btn:hover {
  background: rgba(108, 99, 255, .2);
  color: var(--text-primary);
}

.ctrl-btn.play {
  width: 48px;
  height: 48px;
  font-size: 1.2rem;
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 0 20px rgba(108, 99, 255, .5);
}

.player-queue {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.player-queue-title {
  font-size: .78rem;
  color: var(--text-muted);
  letter-spacing: .5px;
  margin-bottom: 10px;
}

.queue-item {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 8px 0;
  font-size: .85rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255, 255, 255, .04);
}

.queue-item:last-child {
  border-bottom: none;
}

.queue-num {
  color: var(--text-muted);
  font-size: .78rem;
  min-width: 18px;
}

.queue-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-dur {
  font-size: .78rem;
  color: var(--text-muted);
}

/* ── Commands Preview ───────────────────────────────────────── */
.commands-preview {
  background: var(--bg-secondary);
}

.commands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 56px;
}

.cmd-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: var(--transition);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.cmd-card:hover {
  border-color: var(--border-card);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.cmd-slash {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 2px;
}

.cmd-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  font-family: 'Inter', monospace;
}

.cmd-desc {
  font-size: .87rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.commands-cta {
  text-align: center;
  margin-top: 48px;
}

/* ── CTA Section ─────────────────────────────────────────────── */
.cta-section {
  background: var(--bg-primary);
  text-align: center;
  padding: 120px 40px;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(108, 99, 255, .2) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section .section-title {
  max-width: 700px;
  margin: 0 auto 16px;
}

.cta-section .section-desc {
  margin: 0 auto 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 40px;
}

.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-logo {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
  font-size: .95rem;
}

.footer-logo img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .88rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-copy {
  color: var(--text-muted);
  font-size: .82rem;
}

/* ── Scroll Reveal ───────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Commands Page ───────────────────────────────────────────── */
.page-hero {
  padding: 140px 40px 80px;
  background: var(--grad-hero);
  text-align: center;
}

.page-hero .section-title {
  margin: 0 auto 16px;
}

.page-hero .section-desc {
  margin: 0 auto;
}

.guide-section {
  background: var(--bg-primary);
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 56px;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}

.guide-steps::before {
  content: '';
  position: absolute;
  left: 27px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2));
}

.guide-step {
  display: flex;
  gap: 24px;
  padding-bottom: 48px;
  position: relative;
}

.guide-step:last-child {
  padding-bottom: 0;
}

.step-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--grad-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 20px rgba(108, 99, 255, .4);
  z-index: 1;
}

.step-content {
  padding-top: 12px;
  flex: 1;
}

.step-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-desc {
  font-size: .95rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.step-code {
  display: inline-block;
  background: rgba(108, 99, 255, .12);
  border: 1px solid rgba(108, 99, 255, .25);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-family: 'Inter', monospace;
  font-size: .9rem;
  color: var(--accent-2);
  margin-top: 12px;
}

.full-commands {
  background: var(--bg-secondary);
}

.cmd-full-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 12px;
  transition: var(--transition);
}

.cmd-full-card:hover {
  border-color: var(--border-card);
}

.cmd-full-header {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  transition: var(--transition);
}

.cmd-full-header:hover {
  background: rgba(108, 99, 255, .07);
}

.cmd-full-name {
  font-family: 'Inter', monospace;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-2);
  flex: 1;
}

.cmd-full-summary {
  font-size: .9rem;
  color: var(--text-secondary);
  flex: 2;
}

.cmd-full-toggle {
  color: var(--text-muted);
  font-size: .85rem;
  transition: var(--transition);
}

.cmd-full-card.open .cmd-full-toggle {
  transform: rotate(180deg);
}

.cmd-full-body {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  border-top: 0px solid var(--border);
}

.cmd-full-card.open .cmd-full-body {
  padding: 20px 24px 24px;
  max-height: 500px;
  border-top: 1px solid var(--border);
}

.cmd-option {
  margin-top: 8px;
}

.cmd-option-label {
  font-size: .82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 6px;
}

.cmd-option-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cmd-option-tag {
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: .85rem;
  font-family: 'Inter', monospace;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 40px;
  }

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

  .hero-stats {
    justify-content: center;
  }

  .hero-orb {
    width: 280px;
    height: 280px;
  }

  .hero-bot-avatar {
    width: 140px;
    height: 140px;
  }

  .hero-ring:nth-child(1) {
    width: 200px;
    height: 200px;
  }

  .hero-ring:nth-child(2) {
    width: 260px;
    height: 260px;
  }

  .hero-ring:nth-child(3) {
    width: 280px;
    height: 280px;
  }

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

  .nav {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  section {
    padding: 70px 20px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 600px) {
  .btn-lg {
    padding: 16px 28px;
    font-size: 1rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }
}