:root {
  --yellow: #fff300;
  --ink: #11141c;
  --muted: #657085;
  --line: #e1e6ef;
  --page: #f5f6f8;
  --panel: #ffffff;
  --blue: #4f79ff;
  --green: #20d6b6;
  --pink: #ff3e9a;
  --orange: #ff8c32;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
  color: var(--ink);
  font-family: Inter, Arial, sans-serif;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--page);
  overflow-x: hidden;
}

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

button {
  font: inherit;
}

.site-shell {
  min-height: 100vh;
  padding-left: 252px;
  overflow-x: hidden;
}

.music-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 20;
  width: 252px;
  display: flex;
  flex-direction: column;
  gap: 34px;
  padding: 28px 24px;
  background: #070707;
  border-right: 1px solid #171717;
  color: #fff;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-burst {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 0 28px rgba(255, 243, 0, 0.45);
}

.brand-burst::before,
.brand-burst::after {
  content: "";
  position: absolute;
  inset: 19px -10px auto -10px;
  height: 4px;
  border-radius: 999px;
  background: var(--yellow);
  transform: rotate(-23deg);
}

.brand-burst::after {
  transform: rotate(38deg);
}

.brand-kicker,
.brand-title {
  display: block;
  color: var(--yellow);
  line-height: 1;
}

.brand-kicker {
  font-size: 14px;
  font-weight: 800;
}

.brand-title {
  margin-top: 2px;
  font-size: 28px;
  font-weight: 900;
}

.side-nav {
  display: grid;
  gap: 18px;
}

.side-nav a {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  color: #85858c;
  font-size: 14px;
  font-weight: 700;
}

.side-nav span {
  color: #8e8e96;
  font-size: 20px;
  line-height: 1;
  text-align: center;
}

.side-nav a:hover,
.side-nav a.active,
.side-nav a.active span {
  color: #fff;
}

.side-nav a.active span {
  color: var(--yellow);
}

.profile-card {
  display: grid;
  grid-template-columns: 36px 1fr;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding: 12px;
  border: 1px solid #2a2a2a;
  border-radius: 18px;
  background: #111;
}

.profile-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, #ffb4d1 0 12%, transparent 13%),
    linear-gradient(135deg, #8f2b61, #ff3e9a);
}

.profile-card strong,
.profile-card small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-card strong {
  font-size: 14px;
}

.profile-card small {
  margin-top: 3px;
  color: #9a9aa1;
  font-size: 12px;
  font-weight: 600;
}

.page {
  overflow: hidden;
}

.radio-hero {
  position: relative;
  min-height: 1160px;
  display: grid;
  grid-template-columns: minmax(300px, 36vw) minmax(560px, 1fr);
  gap: clamp(28px, 5vw, 86px);
  padding: 34px clamp(30px, 5vw, 92px) 54px;
  background: #030303;
  color: #fff;
  width: 100%;
  max-width: 100vw;
  overflow: hidden;
  isolation: isolate;
}

.radio-hero::before,
.radio-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

.radio-hero::before {
  right: -4%;
  top: 42%;
  width: 52%;
  height: 3px;
  background: rgba(160, 186, 255, 0.2);
  filter: blur(16px);
  transform: rotate(12deg);
}

.radio-hero::after {
  right: 8%;
  top: 42%;
  width: 48%;
  height: 3px;
  background: rgba(109, 143, 255, 0.22);
  filter: blur(18px);
  transform: rotate(-12deg);
}

.hero-glow {
  position: absolute;
  z-index: -2;
  border-radius: 999px;
  pointer-events: none;
}

.hero-glow-blue {
  right: 3vw;
  top: 30px;
  width: 55vw;
  max-width: 760px;
  height: 650px;
  background: rgba(71, 119, 255, 0.34);
  filter: blur(120px);
}

.hero-glow-violet {
  right: 4vw;
  top: 150px;
  width: 430px;
  height: 350px;
  background: rgba(139, 92, 255, 0.16);
  filter: blur(90px);
}

.hero-glow-yellow {
  right: 22vw;
  top: 430px;
  width: 230px;
  height: 230px;
  background: rgba(255, 243, 0, 0.16);
  filter: blur(60px);
}

.mobile-topbar,
.mobile-menu {
  display: none;
}

.mood-column {
  align-self: start;
  padding-top: 4px;
}

.eyebrow {
  margin: 0 0 28px;
  color: #9aa3b2;
  font-size: 13px;
  font-weight: 700;
}

.mood-column h2 {
  max-width: 420px;
  margin: 0 0 28px;
  color: #fff;
  font-size: 18px;
  line-height: 1.25;
}

.mood-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  align-items: center;
  gap: 24px;
  min-height: 92px;
  color: #fff;
}

.mood-item strong {
  font-size: 16px;
  font-weight: 800;
}

.mood-item.active strong {
  color: var(--yellow);
}

.mood-icon {
  position: relative;
  display: block;
  width: 72px;
  height: 72px;
  border: 1px solid #22252a;
  border-radius: 18px;
  background: #0c0d10;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.26);
}

.mood-icon::before,
.mood-icon::after {
  content: "";
  position: absolute;
  border-radius: 5px;
  background: currentColor;
}

.mood-icon::before {
  left: 18px;
  top: 18px;
  width: 36px;
  height: 12px;
  transform: rotate(-18deg);
}

.mood-icon::after {
  left: 20px;
  top: 36px;
  width: 44px;
  height: 12px;
  opacity: 0.82;
  transform: rotate(31deg);
}

.mood-icon.blue { color: var(--blue); box-shadow: 0 10px 28px rgba(79, 121, 255, 0.28); }
.mood-icon.yellow { color: var(--yellow); box-shadow: 0 10px 28px rgba(255, 243, 0, 0.24); }
.mood-icon.orange { color: var(--orange); box-shadow: 0 10px 28px rgba(255, 140, 50, 0.25); }
.mood-icon.green { color: var(--green); box-shadow: 0 10px 28px rgba(32, 214, 182, 0.22); }
.mood-icon.pink { color: var(--pink); box-shadow: 0 10px 28px rgba(255, 62, 154, 0.24); }

.hero-player {
  position: relative;
  min-width: 0;
  max-width: 760px;
  margin-left: auto;
  padding-top: 22px;
}

.status-pill {
  width: fit-content;
  margin: 0 0 54px auto;
  padding: 13px 17px;
  border: 1px solid #303038;
  border-radius: 999px;
  background: #111;
  color: #d8d8de;
  font-size: 13px;
  font-weight: 800;
}

.status-pill span {
  color: var(--yellow);
}

.hero-copy h1 {
  margin: 0;
  color: var(--yellow);
  font-size: clamp(58px, 7vw, 98px);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-copy p {
  width: min(100%, 540px);
  max-width: 540px;
  margin: 22px 0 0;
  color: rgba(221, 230, 255, 0.86);
  font-size: 22px;
  line-height: 1.35;
  font-weight: 600;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 18px 0 20px 210px;
}

.player-controls button,
.play-button {
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.player-controls button {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.14);
  color: rgba(221, 230, 255, 0.76);
  font-size: 36px;
  line-height: 1;
}

.play-button {
  width: 84px;
  height: 84px;
  background: var(--yellow);
  color: #000;
  font-size: 42px;
  box-shadow: 0 18px 60px rgba(255, 243, 0, 0.25);
}

.track-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(592px, 100%);
  min-width: 0;
  min-height: 68px;
  margin: 0 0 18px auto;
  padding: 16px 32px;
  border-radius: 38px;
  background: rgba(24, 28, 34, 0.94);
  box-shadow: 0 18px 44px rgba(29, 60, 142, 0.32);
}

.track-card span,
.embed-heading span {
  display: block;
  margin-bottom: 4px;
  color: #8e98a8;
  font-size: 13px;
  font-weight: 700;
}

.track-card strong {
  display: block;
  color: var(--yellow);
  font-size: 17px;
}

.track-card a,
.embed-heading a {
  color: #8e98a8;
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}

.radio-embed-card {
  width: min(760px, 100%);
  min-width: 0;
  margin-left: auto;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 28px;
  background: rgba(13, 16, 22, 0.72);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(18px);
}

.embed-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px 14px;
}

.embed-heading strong {
  color: #fff;
  font-size: 18px;
}

.radio-embed-card iframe {
  display: block;
  width: 100%;
  height: 420px;
  border: 0;
  background: #fff;
}

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 18px;
  margin: 0;
  color: #7e8798;
  font-size: 13px;
  font-weight: 800;
  transform: translateX(-50%);
  white-space: nowrap;
}

.knowledge-section {
  background: var(--page);
}

.section-inner {
  max-width: 1428px;
  margin: 0 auto;
  padding: 70px clamp(24px, 5vw, 92px) 80px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.tabs a {
  min-height: 38px;
  padding: 10px 18px;
  border: 1px solid #d8dde8;
  border-radius: 999px;
  background: #f0f2f5;
  color: #48516a;
  font-size: 14px;
  font-weight: 800;
}

.tabs a.current {
  border-color: transparent;
  background: var(--yellow);
  color: #090909;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 448px;
  gap: clamp(32px, 6vw, 80px);
  align-items: start;
}

.knowledge-copy h2 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: 0;
}

.knowledge-copy p {
  max-width: 760px;
  margin: 28px 0 0;
  color: #596273;
  font-size: 22px;
  line-height: 1.5;
  font-weight: 600;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 900;
}

.primary-action {
  background: #151923;
  color: #fff;
}

.secondary-action {
  border: 1px solid #d9dee8;
  background: #fff;
  color: #151923;
}

.stream-card {
  position: relative;
  min-height: 236px;
  padding: 30px 32px;
  border: 1px solid #e1e5ee;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(93, 107, 145, 0.14);
}

.stream-card span {
  display: block;
  margin-bottom: 16px;
  color: #697388;
  font-size: 15px;
  font-weight: 800;
}

.stream-card strong {
  display: block;
  color: #151923;
  font-size: 36px;
  line-height: 1.16;
  font-weight: 900;
}

.stream-card a {
  position: absolute;
  right: 32px;
  bottom: 30px;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #151923;
  color: var(--yellow);
  font-size: 22px;
}

.material-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 76px;
}

.material-card {
  min-height: 226px;
  padding: 26px;
  border: 1px solid #e3e7ef;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 16px 34px rgba(116, 128, 154, 0.11);
}

.material-card span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 24px;
  border-radius: 50%;
  font-size: 25px;
  font-weight: 900;
}

.material-card.books span { background: var(--yellow); color: #151923; }
.material-card.answers span { background: var(--blue); color: #fff; }
.material-card.dictionary span { background: var(--green); color: #fff; }
.material-card.articles span { background: var(--pink); color: #fff; }

.material-card strong {
  display: block;
  color: #151923;
  font-size: 24px;
  font-weight: 900;
}

.material-card p {
  margin: 14px 0 0;
  color: #697388;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 600;
}

.study-path {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  margin-top: 50px;
  padding: 24px 30px;
  border-radius: 28px;
  background: #10131a;
  color: #fff;
  box-shadow: 0 20px 50px rgba(32, 41, 65, 0.2);
}

.study-path strong {
  font-size: 20px;
  font-weight: 900;
}

.study-path span {
  color: #ced6e8;
  font-size: 15px;
  font-weight: 800;
}

.study-path a {
  min-height: 48px;
  padding: 15px 20px;
  border-radius: 999px;
  background: var(--yellow);
  color: #10131a;
  font-size: 14px;
  font-weight: 900;
  white-space: nowrap;
}

@media (max-width: 1180px) {
  .site-shell {
    padding-left: 0;
  }

  .music-sidebar {
    display: none;
  }

  .radio-hero {
    min-height: 1120px;
    grid-template-columns: 1fr;
    padding: 22px 24px 46px;
  }

  .mobile-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
  }

  .mobile-brand {
    color: var(--yellow);
    font-size: 24px;
    font-weight: 900;
  }

  .menu-button {
    min-height: 36px;
    padding: 0 16px;
    border: 1px solid #303038;
    border-radius: 999px;
    background: #121212;
    color: #d8d8de;
    cursor: pointer;
    font-size: 14px;
    font-weight: 800;
  }

  .mobile-menu {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: -10px 0 26px;
  }

  .mobile-menu.open {
    display: grid;
  }

  .mobile-menu a {
    padding: 10px 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    font-size: 13px;
    font-weight: 800;
    text-align: center;
  }

  .mood-column {
    display: none;
  }

  .hero-player {
    width: 100%;
    max-width: none;
    margin: 0;
    padding-top: 0;
  }

  .hero-copy,
  .hero-copy h1,
  .hero-copy p,
  .track-card,
  .radio-embed-card {
    max-width: 100%;
    min-width: 0;
  }

  .status-pill {
    display: none;
  }

  .hero-copy h1 {
    font-size: clamp(42px, 12vw, 62px);
  }

  .hero-copy p {
    max-width: 620px;
    font-size: 21px;
  }

  .player-controls {
    justify-content: center;
    margin: 24px 0;
  }

  .track-card,
  .radio-embed-card {
    margin-left: 0;
  }

  .radio-embed-card iframe {
    height: 360px;
  }

  .scroll-hint {
    width: calc(100% - 48px);
    text-align: center;
    white-space: normal;
  }

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

  .stream-card {
    max-width: 520px;
  }

  .material-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .study-path {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 640px) {
  .mobile-topbar,
  .hero-player,
  .hero-copy,
  .hero-copy h1,
  .hero-copy p,
  .track-card,
  .radio-embed-card {
    width: calc(100vw - 48px);
    max-width: calc(100vw - 48px);
  }

  .radio-hero {
    min-height: 1120px;
  }

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

  .hero-copy p {
    width: min(100%, 315px);
    font-size: 17px;
    max-width: 315px;
    overflow-wrap: break-word;
  }

  .hero-copy h1 {
    font-size: clamp(36px, 10vw, 44px);
  }

  .player-controls button {
    width: 44px;
    height: 44px;
  }

  .play-button {
    width: 84px;
    height: 84px;
  }

  .track-card {
    align-items: flex-start;
    flex-direction: column;
    border-radius: 28px;
  }

  .embed-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .radio-embed-card iframe {
    height: 250px;
  }

  .section-inner {
    padding: 34px 24px 54px;
  }

  .knowledge-copy h2 {
    font-size: 36px;
  }

  .knowledge-copy p {
    font-size: 18px;
  }

  .stream-card strong {
    font-size: 30px;
  }

  .material-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 40px;
  }

  .material-card {
    min-height: 0;
  }
}