/* /assets/site.css */
:root {
  --c-bg: #0A0E27;
  --c-bg-deep: #060918;
  --c-card: #121A3A;
  --c-line: rgba(200, 182, 255, 0.16);
  --c-purple: #8A2BE2;
  --c-purple-soft: #C8B6FF;
  --c-gold: #FFD700;
  --c-green: #00E5A0;
  --c-ink: #E0E4F0;
  --c-muted: #6B7A8F;
  --c-white: #FFFFFF;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --container: 1260px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --shadow-card: 0 24px 70px rgba(2, 6, 23, 0.45);
  --ease: 200ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 85% 8%, rgba(138, 43, 226, 0.18), transparent 34rem),
    radial-gradient(circle at 18% 32%, rgba(0, 229, 160, 0.08), transparent 26rem),
    var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--c-gold);
  outline-offset: 3px;
}

::selection {
  background: var(--c-purple);
  color: var(--c-white);
}

mark {
  background: rgba(255, 215, 0, 0.18);
  color: var(--c-gold);
}

#main-content {
  width: 100%;
  flex: 1 0 auto;
}

.l-container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.l-section {
  padding-block: clamp(64px, 10vw, 120px);
}

.l-section--tint {
  background: linear-gradient(180deg, rgba(18, 26, 58, 0.6), rgba(10, 14, 39, 0.2));
}

.l-section--flush-top {
  padding-top: 0;
}

.l-grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

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

.l-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.l-grid--asym {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
}

@media (max-width: 980px) {
  .l-grid--three,
  .l-grid--four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .l-grid--asym {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .l-grid--two,
  .l-grid--three,
  .l-grid--four,
  .l-grid--asym {
    grid-template-columns: 1fr;
  }
}

.section-head {
  max-width: 760px;
  margin-bottom: clamp(24px, 4vw, 48px);
}

.section-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.section-head__eyebrow::before {
  content: "";
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold), transparent);
}

.section-head__title {
  font-family: var(--font-sans);
  font-size: clamp(1.9rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.section-head__title em {
  font-style: normal;
  color: var(--c-gold);
}

.section-head__intro {
  margin-top: 1rem;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--c-muted);
}

.hero-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding-block: clamp(64px, 10vw, 128px);
}

.hero-split__copy {
  max-width: 58ch;
}

.hero-split__visual {
  position: relative;
  min-height: clamp(320px, 52vw, 560px);
}

@media (max-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr;
    padding-block: 60px;
  }
}

.theme-visual {
  position: relative;
  height: 100%;
  min-height: inherit;
  overflow: hidden;
  border: 1px solid rgba(200, 182, 255, 0.18);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(18, 26, 58, 0.92), rgba(10, 14, 39, 0.68));
  box-shadow: var(--shadow-card);
}

.theme-visual::before {
  content: "";
  position: absolute;
  top: 12%;
  right: 12%;
  width: 52%;
  aspect-ratio: 1 / 1;
  transform: rotate(-14deg);
  border-radius: 40% 60% 64% 36% / 44% 34% 66% 56%;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.32), rgba(138, 43, 226, 0.28));
}

.theme-visual::after {
  content: "";
  position: absolute;
  bottom: 10%;
  left: 6%;
  width: 34%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 160, 0.28), transparent 68%);
}

.card {
  background: linear-gradient(180deg, rgba(18, 26, 58, 0.92), rgba(10, 14, 39, 0.9));
  border: 1px solid rgba(200, 182, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: clamp(22px, 3vw, 34px);
  box-shadow: var(--shadow-card);
  transition: transform var(--ease), border-color var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(138, 43, 226, 0.45);
}

.card__meta {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.card__title {
  margin-block: 0.45em 0.6em;
  font-family: var(--font-sans);
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--c-ink);
}

.card__body {
  font-family: var(--font-serif);
  color: var(--c-muted);
  line-height: 1.8;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.28em 0.75em;
  border: 1px solid rgba(200, 182, 255, 0.28);
  border-radius: 999px;
  background: rgba(200, 182, 255, 0.04);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--c-purple-soft);
}

.tag-chip--gold {
  border-color: rgba(255, 215, 0, 0.38);
  background: rgba(255, 215, 0, 0.04);
  color: var(--c-gold);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.78rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--c-purple);
  color: var(--c-white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: 0 12px 34px rgba(138, 43, 226, 0.24);
  transition: background var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.btn:hover {
  background: #7110c2;
  box-shadow: 0 16px 40px rgba(138, 43, 226, 0.35);
}

.btn--gold {
  background: var(--c-gold);
  color: #16092B;
  box-shadow: 0 12px 34px rgba(255, 215, 0, 0.2);
}

.btn--gold:hover {
  background: #F5C200;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(200, 182, 255, 0.3);
  color: var(--c-ink);
  box-shadow: none;
}

.btn--ghost:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.breadcrumb {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--c-muted);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--c-muted);
  opacity: 0.55;
}

.breadcrumb__link {
  color: var(--c-purple-soft);
  transition: color var(--ease);
}

.breadcrumb__link:hover {
  color: var(--c-gold);
}

.breadcrumb__current {
  color: var(--c-gold);
  font-weight: 600;
}

.prose {
  max-width: 72ch;
  font-family: var(--font-serif);
  color: var(--c-ink);
  line-height: 1.9;
}

.prose h2 {
  margin: 2.2em 0 0.7em;
  font-family: var(--font-sans);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--c-white);
}

.prose h3 {
  margin: 1.8em 0 0.5em;
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--c-gold);
}

.prose p + p {
  margin-top: 1.25em;
}

.prose a {
  color: var(--c-purple-soft);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.prose a:hover {
  color: var(--c-gold);
}

.prose ul {
  margin-top: 1em;
  padding-left: 1.2em;
  list-style: disc;
}

.prose ol {
  margin-top: 1em;
  padding-left: 1.4em;
  list-style: decimal;
}

.prose li {
  margin-top: 0.35em;
  padding-left: 0.4em;
}

.collapsible {
  border: 1px solid rgba(200, 182, 255, 0.14);
  border-radius: var(--radius-md);
  background: rgba(18, 26, 58, 0.5);
  transition: border-color var(--ease), background var(--ease);
}

.collapsible[data-open] {
  border-color: rgba(138, 43, 226, 0.5);
  background: rgba(18, 26, 58, 0.72);
}

.collapsible__header {
  margin: 0;
}

.collapsible__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.1rem 1.25rem;
  background: transparent;
  border: 0;
  color: var(--c-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  text-align: left;
  transition: color var(--ease);
}

.collapsible__toggle:hover {
  color: var(--c-gold);
}

.collapsible__icon {
  flex: 0 0 auto;
  font-size: 1.4rem;
  line-height: 1;
  color: var(--c-gold);
  transform: rotate(0deg);
  transition: transform var(--ease);
}

.collapsible[data-open] .collapsible__icon {
  transform: rotate(45deg);
}

.collapsible__body {
  display: none;
  padding: 0 1.3rem 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--c-muted);
  font-family: var(--font-serif);
  line-height: 1.8;
}

.collapsible[data-open] .collapsible__body {
  display: block;
  padding-top: 1rem;
}

.figure-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 240px;
  overflow: hidden;
  border: 1px solid rgba(200, 182, 255, 0.14);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(18, 26, 58, 0.9), rgba(10, 14, 39, 0.7));
}

.figure-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure-frame figcaption {
  position: relative;
  z-index: 1;
  padding: 1.2rem 1.4rem;
  background: linear-gradient(180deg, transparent, rgba(6, 9, 24, 0.88));
  color: var(--c-muted);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  line-height: 1.7;
}

.stat-number {
  font-family: var(--font-sans);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-gold);
  text-shadow: 0 0 32px rgba(255, 215, 0, 0.2);
}

.stat-label {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.text-gold {
  color: var(--c-gold);
}

.text-muted {
  color: var(--c-muted);
}

.text-purple {
  color: var(--c-purple-soft);
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--c-gold);
  border-radius: 999px;
  background: var(--c-purple);
  color: var(--c-white);
  font-family: var(--font-sans);
  font-weight: 700;
  transition: top var(--ease);
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  border-bottom: 1px solid rgba(200, 182, 255, 0.14);
  background: linear-gradient(180deg, rgba(6, 9, 24, 0.98), rgba(10, 14, 39, 0.96));
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.7), rgba(138, 43, 226, 0.8), transparent);
  pointer-events: none;
}

.site-header__upper {
  border-bottom: 1px solid rgba(200, 182, 255, 0.07);
  background: rgba(6, 9, 24, 0.4);
}

.site-header__upper-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.55rem;
}

.brand-lockup {
  display: inline-flex;
  align-items: baseline;
  gap: 0.7rem;
  min-width: 0;
}

.brand-lockup__name {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--c-white);
  text-shadow: 0 0 14px rgba(255, 215, 0, 0.28), 0 0 34px rgba(138, 43, 226, 0.45);
}

.brand-lockup__badge {
  flex: 0 0 auto;
  padding: 0.2em 0.6em;
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 999px;
  background: rgba(255, 215, 0, 0.04);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.header-utilities {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.header-utilities__link {
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--c-muted);
  transition: color var(--ease), background var(--ease);
}

.header-utilities__link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--c-gold);
}

.header-utilities__divider {
  width: 1px;
  height: 1rem;
  background: var(--c-line);
}

.site-header__lower {
  position: relative;
  background: rgba(6, 9, 24, 0.28);
}

.site-header__lower-inner {
  display: flex;
  align-items: stretch;
}

.nav-toggle {
  display: none;
}

.site-nav {
  display: flex;
  align-items: stretch;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
}

.site-nav__item {
  display: flex;
}

.site-nav__link {
  display: flex;
  align-items: center;
  position: relative;
  padding: 0.85rem 1.15rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  transition: color var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 1rem;
  bottom: 0.55rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--c-gold), var(--c-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--ease);
}

.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--c-gold);
  text-shadow: 0 0 16px rgba(255, 215, 0, 0.28);
}

.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

@media (max-width: 920px) {
  .site-header__upper-inner {
    padding-block: 0.5rem;
  }

  .site-header__lower-inner {
    align-items: center;
    padding-block: 0.65rem;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.9rem;
    border: 1px solid rgba(200, 182, 255, 0.22);
    border-radius: 999px;
    background: transparent;
    color: var(--c-ink);
    transition: border-color var(--ease), color var(--ease);
  }

  .nav-toggle:hover {
    border-color: var(--c-gold);
    color: var(--c-gold);
  }

  .nav-toggle__box {
    position: relative;
    width: 20px;
    height: 16px;
  }

  .nav-toggle__bar {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--c-gold);
    transition: transform var(--ease), opacity var(--ease);
  }

  .nav-toggle__bar:nth-child(1) {
    top: 0;
  }

  .nav-toggle__bar:nth-child(2) {
    top: 7px;
  }

  .nav-toggle__bar:nth-child(3) {
    top: 14px;
  }

  .nav-toggle__label {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(1) {
    top: 7px;
    transform: rotate(45deg);
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .site-header[data-open] .nav-toggle__bar:nth-child(3) {
    top: 7px;
    transform: rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    z-index: 300;
    border-bottom: 1px solid transparent;
    background: rgba(6, 9, 24, 0.98);
    transition: max-height 0.24s var(--ease), visibility 0.24s, border-color 0.24s;
  }

  .site-header[data-open] .site-nav {
    max-height: 520px;
    visibility: visible;
    border-color: rgba(200, 182, 255, 0.16);
  }

  .site-nav__list {
    display: grid;
    grid-template-columns: 1fr;
    padding: 0.4rem 0;
  }

  .site-nav__item {
    display: block;
  }

  .site-nav__link {
    padding: 1rem 1.15rem;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
  }

  .site-nav__link::after {
    inset-inline: 1.15rem;
    bottom: 0.45rem;
  }
}

.site-footer {
  position: relative;
  margin-top: auto;
  overflow: hidden;
  border-top: 1px solid rgba(200, 182, 255, 0.14);
  background: linear-gradient(180deg, #0A0E27, #060918 140%);
}

.site-footer::before {
  content: "";
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(138, 43, 226, 0.16), transparent 70%);
  pointer-events: none;
}

.site-footer__signal {
  position: relative;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.75), rgba(138, 43, 226, 0.85), transparent);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.8fr 1.25fr;
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(48px, 7vw, 84px) clamp(32px, 5vw, 56px);
}

.site-footer__intro {
  display: grid;
  align-content: start;
  gap: 0.45rem;
  min-width: 0;
}

.site-footer__brand {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--c-white);
  text-shadow: 0 0 16px rgba(255, 215, 0, 0.22), 0 0 34px rgba(138, 43, 226, 0.3);
}

.site-footer__tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--c-gold);
}

.site-footer__tagline::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--c-gold);
}

.site-footer__statement {
  max-width: 42ch;
  margin-top: 1.1rem;
  color: var(--c-muted);
  font-size: 0.92rem;
  line-height: 1.85;
}

.site-footer__col {
  display: grid;
  align-content: start;
  gap: 0.55rem;
  min-width: 0;
}

.site-footer__heading {
  margin-bottom: 0.25rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--c-white);
}

.site-footer__heading::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin-top: 0.45rem;
  background: linear-gradient(90deg, var(--c-gold), transparent);
}

.site-footer__list {
  display: grid;
  gap: 0.55rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__list a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--c-muted);
  transition: color var(--ease);
}

.site-footer__list a:hover {
  color: var(--c-gold);
}

.site-footer__contact {
  min-width: 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--c-muted);
}

.site-footer__line {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-top: 0.55rem;
}

.site-footer__line span:first-child {
  flex: 0 0 3.2em;
  font-weight: 600;
  color: var(--c-purple-soft);
}

.site-footer__line span:last-child {
  color: var(--c-ink);
}

.site-footer__note {
  margin-top: 1.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(138, 43, 226, 0.22);
  border-radius: var(--radius-md);
  background: rgba(138, 43, 226, 0.08);
  color: var(--c-muted);
  font-family: var(--font-serif);
  font-size: 0.84rem;
  line-height: 1.75;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 2rem;
  padding-block: 1.15rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--c-muted);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.site-footer__bottom p {
  margin: 0;
}

@media (max-width: 1020px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 500;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-purple), var(--c-gold));
  pointer-events: none;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 215, 0, 0.35);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-purple), #4C0B8F);
  color: var(--c-white);
  font-size: 1.6rem;
  box-shadow: 0 14px 32px rgba(138, 43, 226, 0.32);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--ease), transform var(--ease), visibility var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  border-color: var(--c-gold);
  background: linear-gradient(135deg, var(--c-gold), var(--c-purple));
  color: var(--c-bg);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .to-top {
    transition: none;
  }
}