/* ============================================
   亚星中国官网 · 全站共享样式
   /assets/site.css
   ============================================ */

/* ---------- 1. Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul,
ol {
  list-style: none;
}

a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color var(--duration-fast) ease;
}

a:hover {
  color: var(--color-accent-green);
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input,
textarea,
select {
  font-family: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-text-primary);
  text-wrap: balance;
}

/* ---------- 2. Design Tokens ---------- */
:root {
  /* 色板 */
  --color-bg-primary: #0a0e17;
  --color-bg-secondary: #111827;
  --color-bg-tertiary: #1f2937;
  --color-accent-green: #00ff88;
  --color-accent-blue: #00bfff;
  --color-text-primary: #f9fafb;
  --color-text-secondary: #9ca3af;
  --color-warning: #f59e0b;
  --color-success: #10b981;
  --color-error: #ef4444;

  /* 字体 */
  --font-heading: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-body: "JetBrains Mono", "SF Mono", "Cascadia Code", "Fira Code",
    Menlo, Consolas, "Courier New", "PingFang SC", "Microsoft YaHei", monospace;

  /* 布局 */
  --content-max: 80rem;
  --content-pad: clamp(1.25rem, 4vw, 2.5rem);

  /* 圆角 */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-pill: 999px;

  /* 动效 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 0.18s;
  --duration-mid: 0.3s;
  --duration-slow: 0.6s;
}

/* ---------- 3. Pure Typography ---------- */
::selection {
  background: rgba(0, 255, 136, 0.25);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3.2vw, 2.25rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
}

h4 {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 800;
}

p {
  color: var(--color-text-secondary);
}

/* ---------- 4. Focus & Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent-green);
  outline-offset: 3px;
  border-radius: var(--radius-xs);
}

/* ---------- 5. Container & Section ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--content-pad);
}

.section {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  align-items: end;
  margin-bottom: 2.5rem;
}

@media (min-width: 48rem) {
  .section-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 24ch);
    gap: 2.5rem;
  }
}

.section-title {
  margin-bottom: 0;
}

.section-note {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-left: 2px solid rgba(0, 255, 136, 0.35);
  padding-left: 0.85rem;
}

.divider {
  height: 2px;
  border: none;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-accent-green),
    var(--color-accent-blue),
    transparent
  );
  opacity: 0.35;
  margin-block: 2rem;
}

/* ---------- 6. Grid Utilities ---------- */
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
}

@media (min-width: 38rem) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 62rem) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

/* ---------- 7. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 2000;
  background: var(--color-accent-green);
  color: #0a0e17;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-xs);
  font-weight: 800;
  font-size: 0.85rem;
  line-height: 1;
  transition: top var(--duration-mid) var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
  color: #0a0e17;
}

/* ---------- 8. Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-accent-green),
    var(--color-accent-blue)
  );
  z-index: 1500;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
}

/* ---------- 9. Header & Masthead ---------- */
.site-header {
  position: relative;
  background: linear-gradient(
    180deg,
    rgba(0, 255, 136, 0.05),
    transparent 50%
  ), var(--color-bg-primary);
  border-bottom: 1px solid rgba(0, 255, 136, 0.15);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 255, 136, 0.5),
    rgba(0, 191, 255, 0.5),
    transparent
  );
  opacity: 0.4;
  pointer-events: none;
}

.masthead {
  position: relative;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: clamp(1.5rem, 3.5vw, 2.25rem) var(--content-pad) 1.25rem;
  text-align: center;
}

.masthead-beam {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(70rem, 100%);
  height: 100%;
  background: radial-gradient(
    ellipse at 50% 0%,
    rgba(0, 255, 136, 0.1),
    rgba(0, 191, 255, 0.04) 45%,
    transparent 70%
  );
  pointer-events: none;
}

.masthead-brand {
  position: relative;
  z-index: 1;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: clamp(1.7rem, 4.5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  text-indent: 0.1em;
  color: var(--color-text-primary);
  line-height: 1.15;
  transition: color var(--duration-fast);
}

.brand-name .brand-strong {
  color: var(--color-accent-green);
}

.brand-tagline {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  line-height: 1.4;
}

.masthead-brand::after {
  content: "";
  width: 4.5rem;
  height: 3px;
  margin-top: 0.15rem;
  background: linear-gradient(
    90deg,
    var(--color-accent-green),
    var(--color-accent-blue)
  );
  border-radius: 3px;
}

.masthead-live {
  position: absolute;
  top: 50%;
  right: var(--content-pad);
  transform: translateY(-50%);
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid rgba(0, 255, 136, 0.28);
  border-radius: var(--radius-pill);
  background: rgba(0, 255, 136, 0.07);
  z-index: 2;
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-green);
  box-shadow: 0 0 6px rgba(0, 255, 136, 0.7);
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.4;
    transform: scale(0.72);
  }
}

.live-text {
  font-size: 0.68rem;
  font-family: var(--font-body);
  color: var(--color-accent-green);
  letter-spacing: 0.12em;
  white-space: nowrap;
}

@media (min-width: 48rem) {
  .masthead-live {
    display: inline-flex;
  }
}

/* ---------- 10. Navigation Toggle ---------- */
.nav-toggle {
  position: absolute;
  top: 1.1rem;
  right: var(--content-pad);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(0, 255, 136, 0.35);
  border-radius: var(--radius-xs);
  background: rgba(0, 255, 136, 0.06);
  z-index: 20;
  transition: background var(--duration-fast), border-color var(--duration-fast);
}

.nav-toggle:hover {
  background: rgba(0, 255, 136, 0.12);
  border-color: rgba(0, 255, 136, 0.6);
}

.nav-toggle.is-active {
  background: rgba(0, 255, 136, 0.14);
  border-color: var(--color-accent-green);
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 1.35rem;
}

.nav-toggle-line {
  display: block;
  height: 2px;
  background: var(--color-accent-green);
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
    opacity var(--duration-fast);
}

.nav-toggle.is-active .nav-toggle-line:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-line:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}

.nav-toggle-label {
  font-size: 0.7rem;
  font-family: var(--font-body);
  color: var(--color-accent-green);
  letter-spacing: 0.08em;
}

@media (min-width: 48rem) {
  .nav-toggle {
    display: none;
  }
}

/* ---------- 11. Site Navigation ---------- */
.site-nav {
  display: none;
  position: relative;
  z-index: 5;
  background: rgba(17, 24, 39, 0.65);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-nav[data-open] {
  display: block;
  animation: nav-drop var(--duration-mid) var(--ease-out);
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.nav-list {
  max-width: var(--content-max);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  padding: 0.6rem var(--content-pad) 1rem;
  gap: 0;
}

.nav-list a {
  position: relative;
  display: block;
  padding: 0.9rem 0;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color var(--duration-fast), padding-left var(--duration-fast);
}

.nav-list a::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--color-accent-green),
    var(--color-accent-blue)
  );
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-mid) var(--ease-out);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-accent-green);
  padding-left: 0.4rem;
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-list a[aria-current="page"] {
  color: var(--color-accent-green);
}

@media (min-width: 48rem) {
  .site-nav {
    display: block;
  }

  .nav-list {
    flex-direction: row;
    justify-content: center;
    padding: 0;
  }

  .nav-list a {
    padding: 0.95rem 1.5rem;
    border-bottom: none;
  }

  .nav-list a::after {
    bottom: 0;
    left: 1.25rem;
    right: 1.25rem;
    width: auto;
  }

  .nav-list a:hover,
  .nav-list a:focus-visible {
    padding-left: 1.5rem;
  }
}

/* ---------- 12. Footer ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--color-bg-primary), #060910 100%);
  border-top: 1px solid rgba(0, 255, 136, 0.14);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(120%, 90rem);
  height: 6rem;
  transform: translateX(-50%) translateY(-50%);
  background: radial-gradient(
    ellipse at center,
    rgba(0, 255, 136, 0.08),
    rgba(0, 191, 255, 0.04) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.footer-beam {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 255, 136, 0.6),
    rgba(0, 191, 255, 0.6),
    transparent
  );
  opacity: 0.35;
}

.footer-inner {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: clamp(2.25rem, 5vw, 4rem) var(--content-pad) 1.5rem;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

@media (min-width: 48rem) {
  .footer-grid {
    grid-template-columns: 1.6fr 0.8fr 1.3fr;
    gap: 2.5rem;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.6rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  text-decoration: none;
}

.footer-logo-strong {
  color: var(--color-accent-green);
}

.footer-tagline {
  font-size: 0.75rem;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  letter-spacing: 0.14em;
  line-height: 1.5;
}

.footer-trust {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  border-left: 2px solid var(--color-accent-green);
  padding-left: 0.75rem;
  margin-top: 0.25rem;
}

.footer-col {
  min-width: 0;
}

.footer-heading {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(0, 255, 136, 0.15);
}

.footer-links li + li {
  margin-top: 0.55rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast), padding-left var(--duration-fast);
}

.footer-links a:hover {
  color: var(--color-accent-green);
  padding-left: 0.3rem;
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.contact-label {
  font-size: 0.68rem;
  font-family: var(--font-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  opacity: 0.75;
}

.contact-value {
  font-size: 0.88rem;
  font-family: var(--font-body);
  color: var(--color-text-primary);
  word-break: break-all;
  line-height: 1.4;
}

.footer-bottom {
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

@media (min-width: 48rem) {
  .footer-meta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-copyright {
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
}

.footer-icp {
  font-size: 0.75rem;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  opacity: 0.75;
}

.footer-note {
  font-size: 0.7rem;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  opacity: 0.7;
  line-height: 1.5;
}

/* ---------- 13. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.5rem;
  border: 2px solid transparent;
  border-radius: var(--radius-xs);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.9rem;
  line-height: 1;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast),
    border-color var(--duration-fast),
    color var(--duration-fast);
}

.btn-primary {
  background: var(--color-accent-green);
  color: #0a0e17;
  box-shadow: 0 0 0 rgba(0, 255, 136, 0);
}

.btn-primary:hover {
  background: #5affab;
  color: #0a0e17;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 255, 136, 0.35);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-accent-green);
  color: var(--color-accent-green);
}

.btn-outline:hover {
  background: rgba(0, 255, 136, 0.08);
  color: var(--color-accent-green);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 255, 136, 0.2);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-accent-green);
  transition: gap var(--duration-fast) var(--ease-out);
}

.link-arrow:hover {
  gap: 0.55rem;
  color: var(--color-accent-green);
}

/* ---------- 14. Back to Top ---------- */
.btn-top {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: var(--color-bg-tertiary);
  border: 2px solid var(--color-accent-green);
  color: var(--color-accent-green);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.6rem);
  transition: opacity var(--duration-mid), transform var(--duration-mid),
    background-color var(--duration-fast), box-shadow var(--duration-fast);
  z-index: 1200;
}

.btn-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.btn-top:hover {
  background: var(--color-accent-green);
  color: #0a0e17;
  box-shadow: 0 0 18px rgba(0, 255, 136, 0.45);
}

.btn-top-icon {
  font-size: 1.35rem;
  line-height: 1;
  font-family: var(--font-body);
}

/* ---------- 15. Tag & Data Stat ---------- */
.tag {
  display: inline-block;
  padding: 0.18rem 0.6rem;
  font-size: 0.68rem;
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-accent-green);
  border: 1px solid rgba(0, 255, 136, 0.3);
  border-radius: var(--radius-xs);
  background: rgba(0, 255, 136, 0.06);
  white-space: nowrap;
}

.data-stat {
  font-family: var(--font-body);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.data-stat .stat-value {
  color: var(--color-accent-green);
}

.data-stat .stat-unit {
  font-size: 0.5em;
  color: var(--color-text-secondary);
  margin-left: 0.2em;
  letter-spacing: 0.06em;
}

/* ---------- 16. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent-green);
}

.breadcrumb-sep {
  opacity: 0.5;
  color: var(--color-text-secondary);
}

.breadcrumb-current {
  color: var(--color-text-primary);
}

/* ---------- 17. Media Frame ---------- */
.media-frame {
  position: relative;
  background: linear-gradient(
    145deg,
    var(--color-bg-tertiary),
    var(--color-bg-secondary) 70%
  );
  border: 1px solid rgba(0, 255, 136, 0.12);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  clip-path: polygon(
    0 0,
    calc(100% - 14px) 0,
    100% 14px,
    100% 100%,
    0 100%
  );
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 18% 0%,
    rgba(0, 255, 136, 0.1),
    transparent 55%
  );
  pointer-events: none;
}

.media-frame::after {
  content: "";
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  width: 1.6rem;
  height: 1.6rem;
  border-right: 3px solid var(--color-accent-blue);
  border-bottom: 3px solid var(--color-accent-green);
  opacity: 0.55;
  pointer-events: none;
}

.media-tilt {
  transform: rotate(-1.2deg);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 18. Scrollspy Base ---------- */
[data-spy-target] {
  transition: color var(--duration-fast), border-color var(--duration-fast);
}

[data-spy-target].is-active {
  color: var(--color-accent-green);
}

/* ---------- 19. Responsive Helpers ---------- */
@media (max-width: 47.99rem) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 48rem) and (max-width: 61.99rem) {
  .hide-tablet {
    display: none !important;
  }
}

@media (min-width: 62rem) {
  .hide-desktop {
    display: none !important;
  }
}

/* ---------- 20. Reduced Motion ---------- */
@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;
  }
}

/* ---------- 21. Main Content Target ---------- */
#main-content {
  min-height: 60vh;
  scroll-margin-top: 0;
}

#main-content:focus {
  outline: none;
}