/* =========================================================
   VALERIAN OS SHARED VISUAL SYSTEM
   ========================================================= */

.hero-visual {
	  width: 100%;
      max-width: 620px;
      min-height: 720px;
      justify-self: end;
      margin-right: clamp(20px, 2vw, 40px);
      position: relative;
      min-height: 775px;
      border: 2px solid rgba(83, 210, 255, 0.18);
      border-radius: 30px;
      overflow: hidden;
      background:
        radial-gradient(circle at 50% 46%, rgba(0, 174, 255, 0.17), transparent 10%),
        radial-gradient(circle at 50% 50%, rgba(0, 41, 96, 0.72), rgba(2, 6, 18, 0.92) 10%, rgba(0, 0, 0, 0.96) 100%),
        linear-gradient(90deg, rgba(7, 24, 55, 0.92), rgba(1, 6, 18, 0.96));
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }

.valerian-engine {
      --engine: var(--primary);
      --engine-2: var(--primary-2);
      display: grid;
      place-items: center;
      padding: 0px;
    }

.valerian-engine.engaged {
      --engine: var(--active);
      --engine-2: #0edc7b;
    }

.valerian-shell {
      position: relative;
      isolation: isolate;
      width: 100%;
      min-height: 750px;
      display: grid;
      grid-template-rows: auto 1fr;
      border-radius: 30px;
      overflow: hidden;
    }

.valerian-shell::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -2;
      border-radius: inherit;
      background-image:
        linear-gradient(rgba(0, 240, 255, 0.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.028) 1px, transparent 1px);
      background-size: 20px 20px;
      opacity: 1;
    }

.valerian-shell::after {
      content: "";
      position: absolute;
      inset: 0;
      z-index: -3;
      border-radius: inherit;
    }

.valerian-title {
      display: grid;
      justify-items: center;
      gap: 20px;
      padding-top: 50px;
      text-align: center;
    }

.valerian-title strong {
      color: rgba(236, 247, 255, 0.76);
      font-size: 0.90rem;
      letter-spacing: 0.60em;
      text-transform: uppercase;
    }

.valerian-center {
      display: grid;
      justify-items: center;
      align-content: center;
      gap: 30px;
      width: 100%;
    }

.valerian-modules {
      display: grid;
      grid-template-columns: repeat(4, 82px);
      gap: 18px;
      justify-content: center;
      align-items: center;
      width: 100%;
      margin-top: 4px;
    }

.valerian-feature {
      position: relative;
      display: grid;
      place-items: center;
      width: 82px;
      height: 82px;
      border: 2px solid rgba(255, 255, 255, 0.10);
      border-radius: 20%;
      color: #dffcff;
      cursor: pointer;
      background:
        radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.12), rgba(0, 71, 126, 0.13) 48%, rgba(5, 12, 24, 0.58));
      box-shadow:
        inset 0 0 22px rgba(0, 240, 255, 0.045),
        0 0 22px rgba(0, 240, 255, 0.08);
      transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
    }

.valerian-feature:hover {
      border-color: rgba(0, 240, 255, 0.28);
    }

.valerian-feature svg {
      width: 40px;
      height: 40px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2.4;
      stroke-linecap: round;
      stroke-linejoin: round;
      filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.58));
    }

.valerian-feature span {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip: rect(0 0 0 0);
    }

.valerian-core {
      position: relative;
      display: grid;
      place-items: center;
      width: min(250px, 66vw);
      aspect-ratio: 1;
    }

.valerian-ring,
    .valerian-ring-sweep,
    .valerian-dial,
    .valerian-core-glow {
      position: absolute;
      border-radius: 100%;
      pointer-events: none;
    }

.valerian-ring-a {
      inset: 20px;
      border: 3px solid color-mix(in srgb, var(--engine) 100%, transparent);
      box-shadow:
        0 0 20px color-mix(in srgb, var(--engine) 18%, transparent),
        inset 0 0 20px color-mix(in srgb, var(--engine) 10%, transparent);
    }

.valerian-ring-b {
      inset: 4px;
      border: 4px solid color-mix(in srgb, var(--engine) 100%, transparent);
      border-right-color: transparent;
      border-left-color: transparent;
      animation: rotateLeft 5s linear infinite;
    }

.valerian-ring-c {
      inset: 31px;
      border: 3px solid color-mix(in srgb, var(--engine) 20%, transparent);
    }

.valerian-dial {
      inset: 0;
      opacity: 1;
      background:
        repeating-conic-gradient(
          from 0deg,
          transparent 0deg 4deg,
          color-mix(in srgb, var(--engine) 100%, transparent) 5deg 7deg,
          transparent 5deg 8deg
        );
      mask: radial-gradient(circle, transparent 0 42%, black 43% 48%, transparent 49% 100%);
      animation: rotateRight 10s linear infinite;
    }

.valerian-core-glow {
      background: radial-gradient(circle, color-mix(in srgb, var(--engine) 50%, transparent), transparent 0%);
      filter: blur(12px);
    }

.valerian-v {
      position: relative;
      z-index: 2;
      appearance: none;
      -webkit-appearance: none;
      border: 0;
      background: transparent;
      color: var(--engine);
      font-size: clamp(4.6rem, 9vw, 6.8rem);
      line-height: 0.82;
      font-weight: 1000;
      letter-spacing: -0.12em;
      cursor: pointer;
      padding: 0;
      transform: translateX(-0.035em);
      text-shadow:
        0 0 14px color-mix(in srgb, var(--engine) 72%, transparent),
        0 0 42px color-mix(in srgb, var(--engine) 42%, transparent);
      transition:
        color 0.24s ease,
        text-shadow 0.24s ease,
        transform 0.2s ease;
    }

.valerian-v:hover {
      transform: translateX(-0.035em) scale(1.035);
    }

.valerian-status {
      position: relative;
      min-width: 230px;
      padding: 16px 24px 17px;
      text-align: center;
      border: 2px solid rgba(255, 255, 255, 0.10);
      border-radius: 20px;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.018));
      overflow: hidden;
    }

.valerian-status::before,
    .valerian-status::after {
      display: none;
      content: none;
    }

.valerian-status span {
      display: block;
      margin-bottom: 5px;
      color: #9fb2c7;
      font-size: 0.56rem;
      letter-spacing: 0.50em;
      text-transform: uppercase;
    }

.valerian-status strong {
      display: block;
      color: var(--engine);
      font-size: 1.38rem;
      font-weight: 700;
      letter-spacing: 0.3em;
      text-transform: uppercase;
      text-shadow: 0 0 18px color-mix(in srgb, var(--engine) 50%, transparent);
      transition:
        color 0.24s ease,
        text-shadow 0.24s ease;
    }

.valerian-popup {
      position: absolute;
      inset: 0;
      z-index: 20;
      display: grid;
      place-items: center;
      padding: 24px;
      border-radius: inherit;
      background:
		  linear-gradient(
			135deg,
			rgba(0,240,255,0.10) 0%,
			rgba(58,141,255,0.08) 30%,
			rgba(8,18,40,0.78) 70%
		  );
	  backdrop-filter: blur(20px) saturate(100%);
      border: 1px solid rgba(160,230,255,0.12);
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
      transform: scale(0.985);
      transition:
        opacity 0.28s ease,
        visibility 0.28s ease,
        transform 0.28s ease;
    }

.valerian-popup.show {
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: scale(1);
    }

.valerian-back-btn {
      position: absolute;
      top: 18px;
      left: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 42px;
      padding: 0 14px;
      border: 1px solid rgba(0, 210, 255, 0.22);
      border-radius: 15px;
      background: rgba(0, 210, 255, 0.055);
      color: #e8fcff;
      cursor: pointer;
    }

.valerian-popup-inner {
      width: min(100%, 520px);
      padding: 28px 24px 24px;
      border: 1px solid rgba(0, 210, 255, 0.16);
      border-radius: 26px;
      text-align: center;
      background:
        linear-gradient(180deg, rgba(5, 27, 55, 0.52), rgba(1, 8, 20, 0.62));
      box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32), 0 0 36px rgba(0, 210, 255, 0.08);
	  backdrop-filter: blur(100px);
      -webkit-backdrop-filter: blur(100px);
    }

.valerian-popup-kicker {
      margin-bottom: 12px;
      color: rgba(150, 230, 250, 0.78);
      font-size: 1rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }

.valerian-popup-inner h3 {
      margin: 0;
      font-size: clamp(1.55rem, 3vw, 2.25rem);
      line-height: 1.5;
      letter-spacing: 0.1em;
      text-transform: uppercase;
    }

.valerian-popup-inner p {
      max-width: 460px;
      margin: 16px auto 0;
      color: rgba(203, 226, 240, 0.82);
      font-size: 1rem;
      line-height: 1.5;
      text-transform: uppercase;
    }

.valerian-popup-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 20px;
    }

.valerian-popup-point {
      display: grid;
      align-content: center;
      min-height: 80px;
      padding: 10px 10px;
      border: 1px solid rgba(0, 210, 255, 0.11);
      border-radius: 15px;
      background: rgba(0, 210, 255, 0.035);
      gap: 10px;
    }

.valerian-popup-point span {
      color: rgba(150, 230, 250, 0.66);
      font-size: 0.8rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

.valerian-popup-point strong {
      color: #f3fdff;
      font-size: 0.8rem;
      line-height: 1.28;
      text-transform: uppercase;
    }

@media (max-width: 860px) { .hero{min-height:auto; padding:28px 0 16px;} .hero h1{font-size:clamp(2.8rem,12vw,4.8rem);} .hero-shell{grid-template-columns:1fr;} .hero-visual{min-height:720px;} .valerian-engine{padding:18px;} .valerian-shell{min-height:650px;} .valerian-layout{gap:24px; min-height:auto; padding:36px 18px 34px;} .valerian-center{gap:26px;} .valerian-modules{grid-template-columns:repeat(4, 68px); gap:12px;} .valerian-feature{width:68px; height:68px; justify-self:center;} .valerian-feature svg{width:32px; height:32px;} .valerian-popup-grid{grid-template-columns:1fr;} .pillars-grid,.lesson-window,.mini-metrics,.overview-grid,.footer-shell,.footer-links,.topic-grid{grid-template-columns:1fr;} .lesson-sidebar{border-right:0; border-bottom:1px solid rgba(255,255,255,.05);} .section{padding:76px 0;} .showcase-main{padding:22px;} }

@media (max-width: 520px) { :root{--header-h:86px;} .nav-shell{gap:10px;} .brand-text strong{font-size:.66rem; white-space:normal; line-height:1.1;} .brand-text span{font-size:.44rem; white-space:normal; letter-spacing:.08em;} .hero-visual{min-height:650px;} .valerian-title strong{font-size:.62rem; letter-spacing:.28em;} .valerian-core{width:min(240px,72vw);} .valerian-status{min-width:170px;} .valerian-status strong{font-size:1.1rem;} .valerian-modules{grid-template-columns:repeat(2, 68px); gap:14px;} .valerian-command-row{grid-template-columns:1fr;} }

@media (max-width: 1180px) {
      .hero-visual {
        min-height: 640px;
      }

      .valerian-layout {
        padding-inline: 24px;
      }
    }

@media (max-width: 860px) {
      .hero-visual {
        min-height: 760px;
      }

      .valerian-engine {
        padding: 18px;
      }
    }

.hero-visual {
  width: 100%;
  max-width: 640px;
  min-height: 720px;
  justify-self: center;
}

.valerian-engine {
  place-items: center;
}

.valerian-shell {
  min-height: 720px;
  display: grid;
  grid-template-rows: auto 1fr;
}

.valerian-title {
  padding-top: 52px;
  gap: 18px;
}

.valerian-title strong {
  text-align: center;
}

.valerian-layout {
  width: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 34px;
  padding: 44px 42px 52px;
}

.valerian-center {
  width: 100%;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 32px;
}

.valerian-core {
  width: clamp(250px, 17vw, 285px);
}

.valerian-status {
  width: min(100%, 268px);
  min-width: 0;
}

.valerian-modules {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 82px);
  justify-content: center;
  align-items: center;
  gap: 22px;
  margin-top: 0;
}

.valerian-feature {
  justify-self: center;
}

@media (max-width: 1400px) {
  .hero-shell {
    grid-template-columns: minmax(0, 1fr) minmax(460px, 0.92fr);
    gap: clamp(34px, 4vw, 64px);
  }

  .hero-visual {
    max-width: 600px;
  }
}

@media (max-width: 1180px) {
  .nav-shell {
    grid-template-columns: 1fr;
  }

  nav {
    justify-content: center;
  }

  .hero-shell {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .hero-copy {
    justify-self: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-visual {
    max-width: 680px;
  }
}

@media (max-width: 860px) {
  .container {
    width: min(calc(100% - 28px), var(--max));
  }

  .nav-shell {
    display: flex;
    justify-content: space-between;
  }

  .hero-shell {
    gap: 34px;
    text-align: left;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-visual {
    max-width: 100%;
    min-height: 690px;
  }

  .valerian-shell {
    min-height: 690px;
  }

  .valerian-layout {
    padding: 36px 18px 40px;
    gap: 28px;
  }

  .valerian-modules {
    grid-template-columns: repeat(4, 68px);
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .hero-visual {
    min-height: 660px;
  }

  .valerian-shell {
    min-height: 660px;
  }

  .valerian-title {
    padding-top: 34px;
  }

  .valerian-layout {
    padding: 30px 14px 36px;
  }

  .valerian-modules {
    grid-template-columns: repeat(2, 68px);
    gap: 14px;
  }
}

.hero-panel .hero-visual {
  max-width: 620px;
  min-height: 680px;
  justify-self: end;
  margin-right: 0;
  border-color: rgba(83, 210, 255, 0.16);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34), 0 0 42px rgba(0, 240, 255, 0.045);
}

.hero-panel .valerian-shell {
  min-height: 680px;
}

.hero-panel .valerian-title {
  padding-top: 42px;
}

@media (max-width: 1180px) {
  .hero-panel {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    padding: clamp(30px, 5vw, 48px);
  }

  .hero-panel .hero-copy,
  .hero-panel .hero-visual {
    justify-self: center;
  }

  .hero-panel .hero-copy {
    max-width: 880px;
  }

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

  .hero-panel .hero-visual {
    width: min(100%, 680px);
    max-width: 680px;
  }
}

@media (max-width: 860px) {
  .hero-panel {
    text-align: left;
    gap: 30px;
    border-radius: 26px;
    padding: 24px 18px 22px;
  }

  .hero-panel::after {
    border-radius: 25px;
  }

  .hero-panel .hero-actions {
    justify-content: flex-start;
  }

  .hero-panel .hero-visual {
    min-height: 670px;
  }

  .hero-panel .valerian-shell {
    min-height: 670px;
  }
}

@media (max-width: 520px) {
  .hero-panel {
    padding: 20px 14px 18px;
  }

  .hero-panel .hero-visual {
    min-height: 650px;
  }

  .hero-panel .valerian-shell {
    min-height: 650px;
  }
}

/* =========================================================
   RESPONSIVE VALERIAN HERO VISUAL
   ========================================================= */

@media (max-width: 1180px) {
  .hero-visual {
    justify-self: center;
    margin-right: 0;
    width: min(100%, 640px);
    max-width: 640px;
    min-height: 660px;
  }

  .valerian-shell {
    min-height: 660px;
  }

  .valerian-title {
    padding-top: 42px;
  }
}

@media (max-width: 860px) {
  .hero-visual {
    min-height: 590px;
    border-radius: 26px;
  }

  .valerian-engine {
    padding: 0;
  }

  .valerian-shell {
    min-height: 590px;
    border-radius: 26px;
  }

  .valerian-title {
    gap: 12px;
    padding: 34px 16px 0;
  }

  .valerian-title strong {
    font-size: .76rem;
    letter-spacing: .38em;
  }

  .valerian-layout {
    min-height: auto;
    padding: 30px 16px 32px;
    gap: 24px;
  }

  .valerian-center {
    gap: 22px;
  }

  .valerian-core {
    width: min(220px, 64vw);
  }

  .valerian-status {
    min-width: min(230px, 88vw);
    padding: 14px 18px 15px;
  }

  .valerian-status span {
    letter-spacing: .34em;
  }

  .valerian-status strong {
    font-size: 1.14rem;
    letter-spacing: .22em;
  }

  .valerian-modules {
    grid-template-columns: repeat(4, 66px);
    gap: 10px;
  }

  .valerian-feature {
    width: 66px;
    height: 66px;
    border-radius: 18px;
  }

  .valerian-feature svg {
    width: 31px;
    height: 31px;
  }

  .valerian-popup {
    padding: 18px;
  }

  .valerian-popup-inner {
    padding: 58px 18px 18px;
    border-radius: 22px;
  }

  .valerian-popup-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-visual {
    min-height: 570px;
  }

  .valerian-shell {
    min-height: 570px;
  }

  .valerian-title strong {
    font-size: .66rem;
    letter-spacing: .28em;
  }

  .valerian-core {
    width: min(194px, 70vw);
  }

  .valerian-v {
    font-size: clamp(4rem, 22vw, 5.6rem);
  }

  .valerian-modules {
    grid-template-columns: repeat(2, 72px);
    gap: 14px;
  }

  .valerian-feature {
    width: 72px;
    height: 72px;
  }
}

@media (max-width: 390px) {
  .hero-visual {
    min-height: 548px;
    border-radius: 22px;
  }

  .valerian-shell {
    min-height: 548px;
    border-radius: 22px;
  }

  .valerian-layout {
    padding: 24px 12px 26px;
  }

  .valerian-core {
    width: min(178px, 72vw);
  }

  .valerian-status {
    min-width: 0;
    width: min(100%, 226px);
  }
}