:root {
  color-scheme: light;
  --ink: #17324d;
  --muted: #5d7188;
  --water: #0b87b7;
  --deep: #075a7c;
  --foam: #f4fbff;
  --sun: #ffbf47;
  --coral: #ef6f61;
  --sand: #f4d79b;
  --paper: #ffffff;
  --line: rgba(23, 50, 77, 0.14);
  --shadow: 0 22px 60px rgba(7, 90, 124, 0.18);
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  position: relative;
  overflow-x: hidden;
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 191, 71, 0.24), transparent 28rem),
    linear-gradient(180deg, #dff6ff 0%, #fff8e8 56%, #f7fbff 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: -20%;
  z-index: -2;
  pointer-events: none;
  background:
    linear-gradient(115deg, rgba(11, 135, 183, 0.16), transparent 42%),
    linear-gradient(245deg, transparent 34%, rgba(239, 111, 97, 0.12), transparent 62%),
    repeating-linear-gradient(100deg, rgba(255, 255, 255, 0.22) 0 1px, transparent 1px 84px);
  transform-origin: center;
  animation: currentDrift 18s ease-in-out infinite alternate;
}

body::after {
  content: "";
  position: fixed;
  inset: auto 0 0;
  z-index: -1;
  height: 38vh;
  pointer-events: none;
  background:
    radial-gradient(120% 65% at 50% 100%, rgba(11, 135, 183, 0.18), transparent 70%),
    linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.48));
}

a {
  color: inherit;
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 20;
  width: var(--progress, 0%);
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--sun), var(--water));
  box-shadow: 0 0 18px rgba(239, 111, 97, 0.42);
  transform-origin: left center;
}

.ambient-bubbles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.ambient-bubbles span {
  position: absolute;
  bottom: -80px;
  width: var(--size);
  height: var(--size);
  left: var(--x);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 0 18px rgba(255, 255, 255, 0.28);
  animation: bubbleRise var(--speed) linear infinite;
  animation-delay: var(--delay);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(244, 251, 255, 0.76);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 12px 30px rgba(7, 90, 124, 0.08);
}

.nav {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--water), var(--coral));
  box-shadow: 0 10px 24px rgba(11, 135, 183, 0.24);
  animation: buoy 4.6s ease-in-out infinite;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.nav-links a {
  position: relative;
  overflow: hidden;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  inset: auto 14px 5px;
  height: 2px;
  border-radius: 999px;
  background: var(--coral);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links .active {
  outline: none;
  color: var(--ink);
  background: rgba(11, 135, 183, 0.12);
  transform: translateY(-1px);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after,
.nav-links .active::after {
  transform: scaleX(1);
}

.wrap {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  padding: 58px 0 38px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
  align-items: center;
  gap: 32px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--deep);
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

h1,
h2,
h3 {
  line-height: 1.08;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(2.4rem, 6vw, 5rem);
  color: transparent;
  background: linear-gradient(115deg, var(--ink), var(--deep) 46%, var(--coral));
  -webkit-background-clip: text;
  background-clip: text;
}

h2 {
  margin: 0 0 18px;
  font-size: clamp(1.7rem, 3vw, 2.7rem);
}

h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.lead {
  margin: 18px 0 0;
  max-width: 650px;
  color: #314b65;
  font-size: clamp(1.04rem, 2vw, 1.26rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  position: relative;
  overflow: hidden;
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  border: 1px solid transparent;
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button::after {
  content: "";
  position: absolute;
  inset: -40% auto auto -20%;
  width: 58px;
  height: 160%;
  opacity: 0;
  background: rgba(255, 255, 255, 0.42);
  transform: rotate(18deg) translateX(-80px);
  transition: transform 360ms ease, opacity 360ms ease;
}

.button:hover,
.button:focus-visible {
  outline: none;
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(7, 90, 124, 0.22);
}

.button:hover::after,
.button:focus-visible::after {
  opacity: 1;
  transform: rotate(18deg) translateX(260px);
}

.button.primary {
  color: #fff;
  background: var(--deep);
  box-shadow: 0 12px 28px rgba(7, 90, 124, 0.24);
}

.button.secondary {
  color: var(--deep);
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.9);
  transform: perspective(1000px) rotateY(-2deg);
  animation: heroFloat 7s ease-in-out infinite;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(115deg, transparent 18%, rgba(255, 255, 255, 0.34) 34%, transparent 50%);
  transform: translateX(-120%);
  animation: shineSweep 6.5s ease-in-out infinite;
}

.hero-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 900ms ease;
}

.hero-visual:hover img {
  transform: scale(1.07);
}

.section {
  padding: 44px 0;
}

.section.alt {
  background: rgba(255, 255, 255, 0.48);
  border-block: 1px solid rgba(23, 50, 77, 0.08);
}

.section.compact {
  padding-top: 22px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1.2fr);
  gap: 28px;
  align-items: start;
}

.text-block p {
  margin: 0 0 14px;
  color: #314b65;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.cards.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.note,
.timeline-item,
.quote-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(16px);
}

.card::before,
.note::before,
.timeline-item::before,
.quote-panel::before,
.table-card::before,
.stat::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.44), transparent 42%);
  opacity: 0;
  transition: opacity 200ms ease;
}

.card:hover::before,
.note:hover::before,
.timeline-item:hover::before,
.quote-panel:hover::before,
.table-card:hover::before,
.stat:hover::before {
  opacity: 1;
}

.card {
  padding: 18px;
}

.card-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 50%;
  color: #fff;
  background: var(--coral);
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(239, 111, 97, 0.24);
  transition: transform 220ms ease;
}

.card:hover .card-icon {
  transform: rotate(-8deg) scale(1.08);
}

.card p,
.note p,
.quote-panel p,
.timeline-item p {
  margin: 0;
  color: #415a72;
}

.card ul,
.note ul,
.table-card ul,
.quote-panel ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: #415a72;
}

.card li,
.note li,
.table-card li,
.quote-panel li {
  margin: 7px 0;
}

.note {
  padding: 20px;
  border-left: 5px solid var(--sun);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.stat {
  position: relative;
  overflow: hidden;
  padding: 18px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--deep), var(--water));
  box-shadow: 0 14px 38px rgba(7, 90, 124, 0.18);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.stat:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 50px rgba(7, 90, 124, 0.24);
}

.stat strong {
  display: block;
  margin-bottom: 4px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1;
}

.stat span {
  display: block;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 700;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: 24px;
  align-items: start;
}

.article-stack {
  display: grid;
  gap: 18px;
}

.article-panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(16px);
}

.article-panel p {
  margin: 0 0 13px;
  color: #415a72;
}

.article-panel p:last-child {
  margin-bottom: 0;
}

.article-panel h3 {
  color: var(--deep);
}

.anchor-list {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(16px);
}

.anchor-list a {
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--deep);
  background: rgba(11, 135, 183, 0.08);
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease;
}

.anchor-list a:hover,
.anchor-list a:focus-visible {
  outline: none;
  transform: translateX(4px);
  background: rgba(239, 111, 97, 0.13);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.compare-item {
  min-height: 220px;
  padding: 20px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(180deg, rgba(7, 90, 124, 0.04), rgba(7, 90, 124, 0.9)),
    linear-gradient(135deg, var(--water), var(--coral));
  box-shadow: 0 18px 46px rgba(7, 90, 124, 0.18);
}

.compare-item h3 {
  margin-top: 88px;
}

.compare-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
}

.fact-list {
  display: grid;
  gap: 12px;
}

.fact-list div {
  padding: 16px;
  border-left: 5px solid var(--coral);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 28px rgba(23, 50, 77, 0.07);
}

.fact-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--deep);
}

.site-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.site-map a {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-radius: 8px;
  color: var(--deep);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  transition: transform 180ms ease, background 180ms ease;
}

.site-map a:hover,
.site-map a:focus-visible {
  outline: none;
  transform: translateY(-4px);
  background: rgba(11, 135, 183, 0.12);
}

.table-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(16px);
}

.table-card table {
  width: 100%;
  border-collapse: collapse;
}

.table-card th,
.table-card td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(23, 50, 77, 0.1);
  text-align: left;
  vertical-align: top;
}

.table-card th {
  color: var(--deep);
  background: rgba(11, 135, 183, 0.09);
}

.table-card tr:last-child td {
  border-bottom: 0;
}

.scale {
  display: grid;
  gap: 12px;
}

.scale-step {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
}

.meter {
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(11, 135, 183, 0.13);
}

.meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--coral), var(--sun));
  transform-origin: left center;
  animation: meterPulse 2.4s ease-in-out infinite;
}

.mini-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}

.mini-tile {
  position: relative;
  overflow: hidden;
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 16px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(180deg, transparent, rgba(7, 90, 124, 0.92)),
    linear-gradient(135deg, var(--water), var(--coral));
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.1);
  text-decoration: none;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.mini-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 12%, rgba(255, 255, 255, 0.24), transparent 38%);
  transform: translateX(-120%);
  transition: transform 520ms ease;
}

.mini-tile:hover,
.mini-tile:focus-visible {
  outline: none;
  transform: translateY(-8px);
  box-shadow: 0 22px 52px rgba(23, 50, 77, 0.18);
}

.mini-tile:hover::after,
.mini-tile:focus-visible::after {
  transform: translateX(120%);
}

.mini-tile:nth-child(2) {
  background:
    linear-gradient(180deg, transparent, rgba(23, 50, 77, 0.88)),
    linear-gradient(135deg, #23a6a3, #ffbf47);
}

.mini-tile:nth-child(3) {
  background:
    linear-gradient(180deg, transparent, rgba(23, 50, 77, 0.88)),
    linear-gradient(135deg, #ef6f61, #f4d79b);
}

.mini-tile:nth-child(4) {
  background:
    linear-gradient(180deg, transparent, rgba(7, 90, 124, 0.92)),
    linear-gradient(135deg, #075a7c, #89d6e8);
}

.mini-tile strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.08rem;
}

.mini-tile span {
  color: rgba(255, 255, 255, 0.88);
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  padding: 18px;
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 16px;
}

.time {
  color: var(--deep);
  font-weight: 900;
}

.bubble-field {
  position: relative;
  min-height: 290px;
  overflow: hidden;
  border-radius: 8px;
  background:
    radial-gradient(circle at 35% 34%, rgba(255, 255, 255, 0.72) 0 16px, transparent 17px),
    linear-gradient(150deg, rgba(11, 135, 183, 0.9), rgba(7, 90, 124, 0.95));
  box-shadow: var(--shadow);
  animation: waterGlow 7s ease-in-out infinite alternate;
}

.bubble-field::before,
.bubble-field::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.72);
  animation: bubblePulse 3.4s ease-in-out infinite;
}

.bubble-field::before {
  width: 120px;
  height: 120px;
  left: 22%;
  top: 24%;
}

.bubble-field::after {
  width: 58px;
  height: 58px;
  right: 18%;
  bottom: 20%;
}

.foam-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 70px;
  background:
    radial-gradient(circle at 12% 0, #fff 0 24px, transparent 25px),
    radial-gradient(circle at 30% 8px, #fff 0 30px, transparent 31px),
    radial-gradient(circle at 54% 2px, #fff 0 26px, transparent 27px),
    radial-gradient(circle at 74% 10px, #fff 0 32px, transparent 33px),
    radial-gradient(circle at 92% 0, #fff 0 24px, transparent 25px),
    linear-gradient(#fff, #fff);
  animation: foamSlide 5.8s ease-in-out infinite alternate;
}

.quote-panel {
  padding: 24px;
}

.quote-panel strong {
  color: var(--deep);
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--deep);
  background: rgba(11, 135, 183, 0.12);
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease;
}

.badge:hover {
  background: rgba(239, 111, 97, 0.14);
  transform: translateY(-2px);
}

.footer {
  padding: 28px 0 40px;
  color: var(--muted);
  text-align: center;
}

.footer p {
  margin: 0;
}

.copyright {
  margin-top: 8px;
  font-weight: 800;
  color: var(--deep);
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 680ms ease, transform 680ms ease;
  transition-delay: var(--stagger, 0ms);
}

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

.motion-card {
  --rx: 0deg;
  --ry: 0deg;
  transition: transform 180ms ease, box-shadow 180ms ease;
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
}

.motion-card:hover {
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry)) translateY(-6px);
  box-shadow: 0 22px 52px rgba(23, 50, 77, 0.16);
}

.interactive-shell {
  display: grid;
  gap: 22px;
}

.js-panel {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 38px rgba(23, 50, 77, 0.09);
  backdrop-filter: blur(16px);
}

.js-panel h2 {
  margin-bottom: 10px;
}

.js-panel p {
  color: #415a72;
}

.js-toolbar,
.tab-list,
.choice-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.chip,
.tab-button,
.choice-button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  color: var(--deep);
  background: rgba(255, 255, 255, 0.72);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.chip:hover,
.chip:focus-visible,
.tab-button:hover,
.tab-button:focus-visible,
.choice-button:hover,
.choice-button:focus-visible {
  outline: none;
  transform: translateY(-2px);
  border-color: rgba(239, 111, 97, 0.42);
  background: rgba(239, 111, 97, 0.12);
}

.chip.active,
.tab-button.active,
.choice-button.correct {
  color: #fff;
  background: var(--deep);
  border-color: transparent;
}

.choice-button.wrong {
  color: #fff;
  background: var(--coral);
  border-color: transparent;
}

.dynamic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.dynamic-card {
  position: relative;
  overflow: hidden;
  min-height: 220px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.66)),
    radial-gradient(circle at top right, rgba(255, 191, 71, 0.24), transparent 46%);
  box-shadow: 0 12px 34px rgba(23, 50, 77, 0.08);
  backdrop-filter: blur(16px);
}

.dynamic-card::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -34px;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  background: rgba(11, 135, 183, 0.11);
}

.dynamic-card small {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--deep);
  background: rgba(11, 135, 183, 0.12);
  font-weight: 800;
}

.dynamic-card p {
  margin: 0;
  color: #415a72;
}

.card-score {
  position: absolute;
  right: 16px;
  top: 16px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--coral), var(--sun));
  font-weight: 900;
}

.tab-panel {
  margin-top: 16px;
  padding: 20px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(7, 90, 124, 0.95), rgba(11, 135, 183, 0.86)),
    radial-gradient(circle at top right, rgba(255, 191, 71, 0.28), transparent 42%);
  box-shadow: 0 18px 46px rgba(7, 90, 124, 0.16);
}

.tab-panel h3,
.tab-panel p {
  color: #fff;
}

.lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  gap: 18px;
}

.range-row {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.range-row label {
  color: var(--deep);
  font-weight: 900;
}

.range-row input {
  width: 100%;
  accent-color: var(--coral);
}

.verdict-box {
  display: grid;
  align-content: center;
  min-height: 100%;
  padding: 24px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(135deg, rgba(239, 111, 97, 0.92), rgba(255, 191, 71, 0.88)),
    linear-gradient(180deg, var(--deep), var(--water));
  box-shadow: 0 18px 46px rgba(239, 111, 97, 0.16);
}

.verdict-box strong {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1;
}

.quiz-result {
  min-height: 38px;
  margin-top: 14px;
  color: var(--deep);
  font-weight: 900;
}

@keyframes currentDrift {
  from {
    transform: rotate(-2deg) translate3d(-1.5%, -1%, 0);
  }
  to {
    transform: rotate(2deg) translate3d(1.5%, 1%, 0);
  }
}

@keyframes bubbleRise {
  from {
    transform: translate3d(0, 0, 0) scale(0.72);
    opacity: 0;
  }
  12% {
    opacity: 0.72;
  }
  to {
    transform: translate3d(24px, -115vh, 0) scale(1.1);
    opacity: 0;
  }
}

@keyframes buoy {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-4px) rotate(-3deg);
  }
}

@keyframes heroFloat {
  0%,
  100% {
    transform: perspective(1000px) rotateY(-2deg) translateY(0);
  }
  50% {
    transform: perspective(1000px) rotateY(1deg) translateY(-10px);
  }
}

@keyframes shineSweep {
  0%,
  48% {
    transform: translateX(-120%);
  }
  72%,
  100% {
    transform: translateX(120%);
  }
}

@keyframes meterPulse {
  0%,
  100% {
    filter: saturate(1);
  }
  50% {
    filter: saturate(1.32) brightness(1.06);
  }
}

@keyframes waterGlow {
  from {
    filter: saturate(1);
  }
  to {
    filter: saturate(1.22) brightness(1.04);
  }
}

@keyframes bubblePulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

@keyframes foamSlide {
  from {
    transform: translateX(-14px);
  }
  to {
    transform: translateX(14px);
  }
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
    gap: 12px;
  }

  .nav-links {
    justify-content: flex-start;
  }

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

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

  .stat-row,
  .content-grid,
  .mini-gallery,
  .cards.four,
  .article-layout,
  .compare-grid,
  .site-map,
  .dynamic-grid,
  .lab-grid {
    grid-template-columns: 1fr;
  }

  .anchor-list {
    position: static;
  }

  .scale-step {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .wrap,
  .nav {
    width: min(100% - 22px, 1120px);
  }

  .nav-links a {
    padding-inline: 10px;
    font-size: 0.92rem;
  }

  .hero {
    padding-top: 28px;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .ambient-bubbles {
    display: none;
  }
}