/* ARMATUS-inspired: black canvas + molten orange */
:root {
  --bg: #000000;
  --surface: #1c1c1e;
  --surface-elevated: #2c2c2e;
  --border: #38383a;
  --primary: #ff6b35;
  --primary-deep: #e04a12;
  --primary-soft: #ffb48a;
  --primary-glow: rgba(255, 107, 53, 0.35);
  --primary-fill: rgba(255, 107, 53, 0.1);
  --primary-fill-strong: rgba(255, 107, 53, 0.18);
  --text: #ffffff;
  --text-secondary: #8e8e93;
  --text-tertiary: #48484a;
  --success: #30d158;
  --error: #ff453a;
  --warning: #ffd60a;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Outfit", system-ui, sans-serif;
  --nav-h: 64px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 72px);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

::selection {
  background: rgba(255, 107, 53, 0.35);
  color: #fff;
}

img {
  max-width: 100%;
  display: block;
}

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

button,
select {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

/* Ambient stage */
.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  animation: drift 18s var(--ease) infinite alternate;
}

.ambient__orb--a {
  width: 55vw;
  height: 55vw;
  max-width: 520px;
  max-height: 520px;
  top: -12%;
  left: -8%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.55), transparent 70%);
}

.ambient__orb--b {
  width: 40vw;
  height: 40vw;
  max-width: 380px;
  max-height: 380px;
  top: 35%;
  right: -10%;
  background: radial-gradient(circle, rgba(224, 74, 18, 0.4), transparent 70%);
  animation-delay: -6s;
}

.ambient__orb--c {
  width: 30vw;
  height: 30vw;
  max-width: 280px;
  max-height: 280px;
  bottom: 5%;
  left: 20%;
  background: radial-gradient(circle, rgba(255, 180, 138, 0.22), transparent 70%);
  animation-delay: -11s;
}

.ambient__vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.85) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.2), transparent 20%, transparent 80%, rgba(0, 0, 0, 0.55));
}

@keyframes drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(4%, 6%, 0) scale(1.08);
  }
}

.page {
  position: relative;
  z-index: 1;
}

/* Top bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 20px;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 107, 53, 0.22);
  box-shadow: 0 8px 32px rgba(255, 107, 53, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 0 18px rgba(255, 107, 53, 0.45);
  flex-shrink: 0;
}

.brand__text {
  min-width: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.28em;
  line-height: 1;
  text-transform: uppercase;
  text-shadow: 0 0 24px rgba(255, 107, 53, 0.45);
}

.brand__sub {
  margin-top: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
}

.topbar__controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.level-label {
  display: none;
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.level-select {
  appearance: none;
  background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23FF6B35' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") right 10px center / 12px no-repeat;
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: 999px;
  padding: 8px 32px 8px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  max-width: 42vw;
}

.level-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.18);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(88dvh, 760px);
  display: grid;
  align-content: end;
  padding: 48px 20px 56px;
  overflow: hidden;
}

.hero__grid {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary);
}

.hero__eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 12px var(--primary);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.8rem, 9vw, 5.6rem);
  line-height: 0.92;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  max-width: 12ch;
  margin-bottom: 18px;
}

.hero__title span {
  color: var(--primary);
  text-shadow: 0 0 40px rgba(255, 107, 53, 0.35);
}

.hero__featuring {
  display: inline-flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 18px;
  max-width: 100%;
  padding: 8px 14px 8px 12px;
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.08);
  border: 1px solid rgba(255, 107, 53, 0.28);
  box-shadow: 0 0 24px rgba(255, 107, 53, 0.12);
}

.hero__featuring-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--primary);
  flex-shrink: 0;
}

.hero__featuring-name {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  line-height: 1.15;
  min-width: 0;
}

.hero__lead {
  max-width: 36rem;
  color: var(--text-secondary);
  font-size: clamp(0.98rem, 2.2vw, 1.12rem);
  margin-bottom: 28px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 12px 22px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s;
}

.btn:active {
  transform: scale(0.985);
}

.btn--primary {
  background: linear-gradient(180deg, #ff8a5a, var(--primary-deep));
  color: #fff;
  box-shadow: 0 8px 28px rgba(255, 107, 53, 0.4);
}

.btn--primary:hover {
  box-shadow: 0 10px 36px rgba(255, 107, 53, 0.55);
}

.btn--ghost {
  border: 1.5px solid rgba(255, 107, 53, 0.55);
  background: rgba(255, 107, 53, 0.08);
  color: var(--primary-soft);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 520px;
}

.meta-chip {
  padding: 14px 12px;
  border-radius: var(--radius-md);
  background: rgba(28, 28, 30, 0.72);
  border: 1px solid rgba(255, 107, 53, 0.22);
  backdrop-filter: blur(10px);
}

.meta-chip strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}

.meta-chip span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* Exercise nav */
.ex-nav-wrap {
  position: sticky;
  top: var(--nav-h);
  z-index: 40;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.ex-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 16px;
  max-width: 1100px;
  margin: 0 auto;
  scrollbar-width: none;
}

.ex-nav::-webkit-scrollbar {
  display: none;
}

.ex-nav__btn {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.ex-nav__btn:hover {
  border-color: rgba(255, 107, 53, 0.4);
}

.ex-nav__btn.is-active {
  background: var(--primary-fill-strong);
  border-color: rgba(255, 107, 53, 0.55);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.18);
}

.ex-nav__num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.68rem;
  font-weight: 800;
  background: rgba(255, 107, 53, 0.16);
  color: var(--primary);
}

.ex-nav__label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.ex-nav__tag {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* Layout */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 16px 120px;
  display: grid;
  gap: 28px;
}

.panel {
  background: rgba(28, 28, 30, 0.78);
  border: 1px solid rgba(255, 107, 53, 0.18);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(14px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.02) inset;
}

.exercise {
  scroll-margin-top: calc(var(--nav-h) + 72px);
  padding: 22px;
  animation: rise 0.55s var(--ease) both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.exercise__head {
  display: grid;
  gap: 18px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.sketch {
  position: relative;
  margin: 0 0 18px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 107, 53, 0.22);
  background: #050505;
  box-shadow: 0 0 32px rgba(255, 107, 53, 0.1);
}

.sketch img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  object-position: center;
  display: block;
  background: #050505;
}

.sketch__caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.72);
  border: 1px solid rgba(255, 107, 53, 0.35);
  color: var(--primary-soft);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
}

.sketch--compact {
  margin: 0 0 14px;
}

.sketch--compact img {
  aspect-ratio: auto;
}

.exercise__badge {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-fill);
  border: 1px solid rgba(255, 107, 53, 0.3);
  color: var(--primary-soft);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.exercise__title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1;
  margin: 10px 0 12px;
}

.exercise__title em {
  font-style: normal;
  color: var(--primary);
}

.exercise__intro {
  color: var(--text-secondary);
  max-width: 48rem;
  font-size: 0.98rem;
}

.dose {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 107, 53, 0.35);
  text-align: center;
  min-width: 0;
  width: 100%;
  box-shadow: 0 0 28px rgba(255, 107, 53, 0.12);
}

.dose__label {
  display: block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}

.dose__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.1;
  margin-bottom: 4px;
}

.dose__meta {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.grid-2 {
  display: grid;
  gap: 14px;
}

.block {
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
}

.block__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  color: var(--primary-soft);
}

.block__icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 107, 53, 0.16);
  color: var(--primary);
  font-size: 0.72rem;
  flex-shrink: 0;
}

.block p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.block p strong {
  color: var(--text);
  font-weight: 600;
}

.check-list {
  list-style: none;
  margin-top: 14px;
  display: grid;
  gap: 10px;
}

.check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.check-list li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 1px;
}

.check-list strong {
  color: var(--text);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.tag {
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 0.72rem;
  font-weight: 650;
  background: var(--primary-fill);
  border: 1px solid rgba(255, 107, 53, 0.28);
  color: var(--primary-soft);
}

.tag--muted {
  background: rgba(44, 44, 46, 0.8);
  border-color: var(--border);
  color: #c7c7cc;
}

.section-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.steps {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.step {
  padding: 14px;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
}

.step__n {
  display: block;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}

.step p {
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.split {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.warn,
.benefit {
  padding: 18px;
  border-radius: var(--radius-lg);
}

.warn {
  background: rgba(255, 69, 58, 0.08);
  border: 1px solid rgba(255, 69, 58, 0.28);
}

.benefit {
  background: rgba(255, 107, 53, 0.08);
  border: 1px solid rgba(255, 107, 53, 0.28);
}

.warn h4,
.benefit h4 {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.warn h4 {
  color: var(--error);
}

.benefit h4 {
  color: var(--primary);
}

.warn ul,
.benefit p {
  font-size: 0.84rem;
  color: var(--text-secondary);
}

.warn ul {
  list-style: none;
  display: grid;
  gap: 8px;
}

.warn li::before {
  content: "• ";
  color: var(--error);
}

.subcard {
  margin-top: 14px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
}

.subcard__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.subcard__title {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  min-width: 0;
  flex: 1 1 100%;
}

.subcard__code {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 107, 53, 0.16);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 1px;
}

.pill {
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--primary-fill);
  border: 1px solid rgba(255, 107, 53, 0.28);
  color: var(--primary-soft);
  max-width: 100%;
}

.subcard ol {
  margin-top: 10px;
  padding-left: 1.1rem;
  display: grid;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.84rem;
}

.muscles {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.muscles strong {
  color: var(--text);
}

/* Tools strip */
.tools {
  display: grid;
  gap: 14px;
}

.timer,
.tracker {
  padding: 20px;
}

.timer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.timer__label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.timer__display {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--primary);
  text-shadow: 0 0 24px rgba(255, 107, 53, 0.35);
  line-height: 1;
}

.timer__presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.chip-btn {
  padding: 10px;
  border-radius: 10px;
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 700;
  transition: border-color 0.2s, background 0.2s;
}

.chip-btn:hover,
.chip-btn.is-active {
  border-color: rgba(255, 107, 53, 0.5);
  background: var(--primary-fill);
  color: var(--primary-soft);
}

.timer__actions {
  display: flex;
  gap: 8px;
}

.timer__actions .btn {
  flex: 1;
  border-radius: 12px;
  letter-spacing: 0.12em;
}

.btn--reset {
  flex: 0 0 52px;
  border: 1px solid var(--border);
  background: var(--surface-elevated);
  color: var(--text-secondary);
}

.tracker__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.tracker__head h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tracker__head p {
  margin-top: 4px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.linkish {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.linkish:hover {
  color: var(--primary);
  border-color: rgba(255, 107, 53, 0.4);
}

.tracker__grid {
  display: grid;
  gap: 8px;
}

.check {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.check:has(input:checked) {
  border-color: rgba(255, 107, 53, 0.5);
  background: var(--primary-fill);
}

.check input {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 1.5px solid rgba(255, 107, 53, 0.45);
  background: #000;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.check input:checked {
  background: var(--primary);
  border-color: var(--primary);
}

.check input:checked::after {
  content: "✓";
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
}

.check span {
  font-size: 0.86rem;
  font-weight: 650;
}

.progress {
  margin-top: 16px;
}

.progress__top {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.progress__top strong {
  color: var(--primary);
}

.progress__bar {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-elevated);
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #ff8a5a, var(--primary-deep));
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.45);
  transition: width 0.35s var(--ease);
}

.footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 40px;
  color: var(--text-tertiary);
  font-size: 0.75rem;
  text-align: center;
}

.footer strong {
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.16em;
}

.footer__ft {
  color: var(--primary-soft);
  letter-spacing: 0.04em;
}

/* Responsive */
@media (min-width: 640px) {
  .topbar {
    padding: 0 28px;
  }

  .level-label {
    display: inline;
  }

  .level-select {
    max-width: none;
  }

  .dose {
    width: auto;
    min-width: 170px;
  }

  .hero {
    padding: 64px 28px 72px;
  }

  .main {
    padding: 36px 28px 140px;
  }

  .exercise {
    padding: 28px;
  }

  .exercise__head {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .tools {
    grid-template-columns: 280px 1fr;
    align-items: stretch;
  }

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

  .subcard__title {
    flex: 1 1 auto;
  }
}

@media (min-width: 960px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .tracker__grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .ex-nav__tag {
    display: inline;
  }
}

@media (max-width: 639px) {
  .brand__name {
    letter-spacing: 0.18em;
    font-size: 1.05rem;
  }

  .ex-nav__tag {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 36px;
    padding-bottom: 40px;
  }

  .hero__title {
    font-size: clamp(2.35rem, 11vw, 3.2rem);
    max-width: none;
  }

  .hero__meta {
    grid-template-columns: repeat(3, 1fr);
  }

  .meta-chip {
    padding: 12px 8px;
    text-align: center;
  }

  .exercise {
    padding: 16px;
  }

  .dose__value {
    font-size: 1.45rem;
  }

  .tracker__head {
    flex-wrap: wrap;
  }
}