/* =====================================================
   AYX 爱游戏体育 · Shared Site Kit · /assets/site.css
   ===================================================== */

/* ---------- Reset & tokens ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

@media (max-width: 880px) {
  html { scroll-padding-top: 120px; }
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--sk-bg);
  color: var(--sk-text);
  font-family: var(--sk-font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--sk-font-display);
  font-weight: 800;
  line-height: 1.15;
  color: var(--sk-text);
  margin: 0 0 0.45em;
}

p { margin: 0 0 1em; }

ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li { margin-bottom: 4px; }

a { color: var(--sk-blue); transition: color 0.2s; }
a:hover { color: var(--sk-green); }

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

:root {
  --sk-bg: #0f0f23;
  --sk-bg-panel: #1b1b36;
  --sk-bg-footer: #0a0a1c;
  --sk-green: #39ff14;
  --sk-blue: #00d4ff;
  --sk-text: #e8e8f0;
  --sk-muted: #9aa0c3;
  --sk-border: #2c2c54;
  --sk-red: #ff4d5a;
  --sk-away: #00a7ff;
  --sk-draw: #6c6c8a;
  --sk-font-display: "Orbitron", "Inter", system-ui, sans-serif;
  --sk-font-body: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --sk-font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sk-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

::selection { background: var(--sk-green); color: var(--sk-bg); }

:focus-visible {
  outline: 2px solid var(--sk-blue);
  outline-offset: 3px;
}

[hidden] { display: none !important; }

/* ---------- Utilities ---------- */
.sk-container {
  width: min(1120px, calc(100% - 48px));
  margin-inline: auto;
}

@media (max-width: 640px) {
  .sk-container { width: calc(100% - 32px); }
}

.sk-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.sk-text-muted { color: var(--sk-muted); }
.sk-text-green { color: var(--sk-green); }
.sk-text-blue { color: var(--sk-blue); }
.sk-text-mono { font-family: var(--sk-font-mono); }
.sk-display { font-family: var(--sk-font-display); }

/* ---------- Skip link & progress ---------- */
.sk-skip-link {
  position: fixed;
  top: -120px;
  left: 16px;
  z-index: 3000;
  padding: 12px 22px;
  background: var(--sk-green);
  color: var(--sk-bg);
  font-family: var(--sk-font-body);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border-radius: 3px 14px 3px 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: top 0.2s ease;
}

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

.sk-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2000;
  width: 100%;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.sk-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sk-green);
  transform-origin: 0 0;
  transform: scaleX(var(--sk-progress, 0));
}

/* ---------- Header ---------- */
.sk-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 35, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--sk-border);
  transition: background 0.3s, box-shadow 0.3s;
}

.sk-header[data-scrolled] {
  background: rgba(10, 10, 28, 0.96);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.sk-header__inner { position: relative; }

.sk-header__top {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding: 14px 0 10px;
}

.sk-header__tools {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-self: end;
}

.sk-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  justify-self: start;
}

.sk-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  background: var(--sk-green);
  color: var(--sk-bg);
  font-family: var(--sk-font-display);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1;
  letter-spacing: 0.1em;
  border-radius: 3px 12px 3px 12px;
}

.sk-brand__text {
  font-family: var(--sk-font-display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  color: var(--sk-text);
}

.sk-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--sk-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--sk-muted);
  white-space: nowrap;
}

.sk-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sk-green);
  box-shadow: 0 0 12px var(--sk-green);
  flex: none;
}

.sk-search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--sk-border);
  border-radius: 999px;
  background: rgba(27, 27, 54, 0.55);
  transition: border-color 0.2s;
}

.sk-search:focus-within { border-color: var(--sk-blue); }

.sk-search__icon {
  color: var(--sk-blue);
  font-family: var(--sk-font-mono);
  font-size: 1rem;
  line-height: 1;
}

.sk-search__input {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  border: none;
  outline: none;
  color: var(--sk-text);
  font-family: var(--sk-font-body);
  font-size: 0.84rem;
  width: 126px;
}

.sk-search__input::placeholder { color: var(--sk-muted); opacity: 1; }
.sk-search__input::-webkit-search-cancel-button { display: none; }

.sk-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 11px;
  background: transparent;
  border: 1px solid var(--sk-border);
  border-radius: 12px 4px 12px 4px;
  cursor: pointer;
}

.sk-nav-toggle__line {
  display: block;
  height: 2px;
  background: var(--sk-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.2s ease;
}

.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle__line:nth-child(2) { opacity: 0; }

.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.sk-nav {
  display: flex;
  justify-content: center;
  padding: 0 0 12px;
}

.sk-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: rgba(27, 27, 54, 0.55);
  border: 1px solid var(--sk-border);
  border-radius: 999px;
}

.sk-nav__item { margin: 0; }

.sk-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  font-family: var(--sk-font-display);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--sk-muted);
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.sk-nav__link:hover {
  color: var(--sk-text);
  background: rgba(0, 212, 255, 0.1);
}

.sk-nav__link[aria-current="page"] {
  background: var(--sk-green);
  color: var(--sk-bg);
}

.sk-nav__index {
  font-family: var(--sk-font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--sk-blue);
  line-height: 1;
}

.sk-nav__link[aria-current="page"] .sk-nav__index,
.sk-nav__link.is-active .sk-nav__index { color: var(--sk-bg); }

.sk-nav__link.is-active:not([aria-current="page"]) {
  background: rgba(57, 255, 20, 0.1);
  color: var(--sk-green);
  box-shadow: inset 0 0 0 1px rgba(57, 255, 20, 0.3);
}

.sk-header__phrase {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 7px 0 9px;
  border-top: 1px solid var(--sk-border);
  font-family: var(--sk-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sk-muted);
}

.sk-header__slash { color: var(--sk-blue); }

/* ---------- Footer ---------- */
.sk-footer {
  flex: none;
  position: relative;
  margin-top: 88px;
  background: var(--sk-bg-footer);
  border-top: 1px solid var(--sk-border);
}

.sk-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(100deg, var(--sk-green) 0%, var(--sk-green) 42%, var(--sk-blue) 42%, var(--sk-blue) 43%, transparent 43%);
}

.sk-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.3fr;
  gap: 56px;
  padding: 56px 0 48px;
}

.sk-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--sk-font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--sk-text);
}

.sk-footer__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 10px;
  border: 2px solid var(--sk-green);
  color: var(--sk-green);
  font-size: 1.05rem;
  font-weight: 900;
  line-height: 1;
  border-radius: 3px 10px 3px 10px;
}

.sk-footer__statement {
  margin: 16px 0 0;
  max-width: 40ch;
  color: var(--sk-muted);
  font-size: 0.86rem;
  line-height: 1.8;
}

.sk-footer__heading {
  margin: 0 0 16px;
  font-family: var(--sk-font-display);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sk-blue);
}

.sk-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

.sk-footer__links li { margin: 0; }

.sk-footer__links a {
  color: var(--sk-muted);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.6;
}

.sk-footer__links a:hover { color: var(--sk-green); }

.sk-footer__contact { font-style: normal; margin: 0; }

.sk-footer__contact-item {
  display: flex;
  gap: 12px;
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--sk-muted);
}

.sk-footer__contact-label {
  flex: none;
  min-width: 42px;
  padding-top: 2px;
  font-family: var(--sk-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--sk-blue);
}

.sk-footer__contact-value { word-break: break-word; }

.sk-footer__note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(44, 44, 84, 0.8);
  font-size: 0.76rem;
  line-height: 1.7;
  color: #6a6d92;
}

.sk-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 0 24px;
  border-top: 1px solid var(--sk-border);
  font-family: var(--sk-font-mono);
  font-size: 0.76rem;
  color: #6a6d92;
}

.sk-footer__copyright,
.sk-footer__icp { margin: 0; }

@media (max-width: 900px) {
  .sk-footer__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* ---------- Buttons ---------- */
.sk-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border: none;
  border-radius: 3px 18px 3px 18px;
  background: var(--sk-green);
  color: var(--sk-bg);
  font-family: var(--sk-font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.sk-btn:not(.sk-btn--ghost)::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -30%;
  width: 28%;
  background: rgba(15, 15, 35, 0.16);
  transform: skewX(-24deg);
  transition: left 0.4s ease;
  pointer-events: none;
}

.sk-btn:not(.sk-btn--ghost):hover::before { left: 115%; }

.sk-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(57, 255, 20, 0.22);
}

.sk-btn:focus-visible {
  outline: 2px solid var(--sk-blue);
  outline-offset: 3px;
}

.sk-btn--ghost {
  background: transparent;
  color: var(--sk-blue);
  box-shadow: inset 0 0 0 1px var(--sk-blue);
}

.sk-btn--ghost:hover {
  background: rgba(0, 212, 255, 0.08);
  box-shadow: inset 0 0 0 1px var(--sk-blue), 0 8px 20px rgba(0, 212, 255, 0.15);
  color: var(--sk-blue);
}

/* ---------- Breadcrumb ---------- */
.sk-breadcrumb { margin-bottom: 32px; }

.sk-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--sk-font-mono);
  font-size: 0.78rem;
}

.sk-breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }

.sk-breadcrumb__item + .sk-breadcrumb__item::before {
  content: "⟩";
  color: var(--sk-muted);
}

.sk-breadcrumb__item a { color: var(--sk-muted); text-decoration: none; }
.sk-breadcrumb__item a:hover { color: var(--sk-green); }
.sk-breadcrumb__item[aria-current="page"] { color: var(--sk-text); }

/* ---------- Section ---------- */
.sk-section { padding: 72px 0; }
.sk-section--tight { padding: 40px 0; }
.sk-section--flush-top { padding-top: 0; }

.sk-section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 18px;
  margin: 0 0 36px;
}

.sk-section-heading__index {
  font-family: var(--sk-font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  color: var(--sk-blue);
  padding-bottom: 10px;
  line-height: 1;
}

.sk-section-heading__body { min-width: 0; }

.sk-section-heading__title {
  font-family: var(--sk-font-display);
  font-size: clamp(1.8rem, 3vw + 0.5rem, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--sk-text);
  margin: 0;
}

.sk-section-heading__desc {
  margin: 10px 0 0;
  color: var(--sk-muted);
  max-width: 52ch;
  font-size: 0.92rem;
}

.sk-section-heading__rule {
  flex: 1;
  height: 1px;
  margin-bottom: 11px;
  background: linear-gradient(90deg, var(--sk-border), transparent);
}

.sk-hero-title {
  font-family: var(--sk-font-display);
  font-size: clamp(2.5rem, 6vw + 1rem, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--sk-text);
  text-wrap: balance;
}

/* ---------- Grid ---------- */
.sk-grid {
  display: grid;
  gap: 24px;
}

.sk-grid--12 { grid-template-columns: repeat(12, 1fr); }
.sk-grid--2 { grid-template-columns: repeat(2, 1fr); }
.sk-grid--3 { grid-template-columns: repeat(3, 1fr); }

@media (min-width: 1025px) {
  .sk-col-3 { grid-column: span 3; }
  .sk-col-4 { grid-column: span 4; }
  .sk-col-5 { grid-column: span 5; }
  .sk-col-6 { grid-column: span 6; }
  .sk-col-7 { grid-column: span 7; }
  .sk-col-8 { grid-column: span 8; }
  .sk-col-9 { grid-column: span 9; }
  .sk-col-12 { grid-column: span 12; }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .sk-grid--12 { grid-template-columns: repeat(6, 1fr); }
  .sk-col-3, .sk-col-4, .sk-col-5, .sk-col-6, .sk-col-7, .sk-col-8, .sk-col-9 { grid-column: span 3; }
  .sk-col-12 { grid-column: span 6; }
  .sk-grid--3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .sk-grid--12,
  .sk-grid--2,
  .sk-grid--3 { grid-template-columns: 1fr; }
  .sk-col-3, .sk-col-4, .sk-col-5, .sk-col-6, .sk-col-7, .sk-col-8, .sk-col-9, .sk-col-12 { grid-column: span 1; }
}

/* ---------- Card ---------- */
.sk-card {
  position: relative;
  padding: 28px;
  background: var(--sk-bg-panel);
  border: 1px solid var(--sk-border);
  border-radius: 4px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.sk-card:hover {
  border-color: rgba(0, 212, 255, 0.35);
  transform: translateY(-2px);
  box-shadow: var(--sk-shadow);
}

.sk-card--cut {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.sk-card--top-green { border-top: 3px solid var(--sk-green); }
.sk-card--top-blue { border-top: 3px solid var(--sk-blue); }

.sk-card__title {
  font-family: var(--sk-font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sk-text);
  margin: 0 0 12px;
}

.sk-card__meta {
  color: var(--sk-muted);
  font-size: 0.82rem;
  line-height: 1.7;
  margin: 0 0 16px;
}

.sk-card__value {
  font-family: var(--sk-font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--sk-green);
}

.sk-card__label {
  display: block;
  font-family: var(--sk-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sk-muted);
}

/* ---------- Table ---------- */
.sk-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--sk-border);
  border-radius: 4px;
  background: var(--sk-bg-panel);
}

.sk-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-family: var(--sk-font-mono);
  font-size: 0.86rem;
}

.sk-table caption {
  padding: 16px 20px;
  text-align: left;
  font-family: var(--sk-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--sk-text);
  background: rgba(57, 255, 20, 0.04);
  border-bottom: 1px solid var(--sk-border);
  caption-side: top;
}

.sk-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sk-muted);
  border-bottom: 1px solid var(--sk-border);
  white-space: nowrap;
}

.sk-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(44, 44, 84, 0.6);
  color: var(--sk-text);
}

.sk-table tbody tr:last-child td { border-bottom: none; }

.sk-table tbody tr:hover td {
  background: rgba(0, 212, 255, 0.05);
}

.sk-table__num {
  color: var(--sk-green);
  font-weight: 700;
}

/* ---------- Tag & badge ---------- */
.sk-tag {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: 2px;
  background: rgba(0, 212, 255, 0.08);
  font-family: var(--sk-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--sk-blue);
  white-space: nowrap;
}

.sk-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.3);
  font-family: var(--sk-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--sk-green);
  white-space: nowrap;
}

.sk-badge--blue {
  background: rgba(0, 212, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.28);
  color: var(--sk-blue);
}

.sk-badge--red {
  background: rgba(255, 77, 90, 0.1);
  border-color: rgba(255, 77, 90, 0.28);
  color: var(--sk-red);
}

.sk-badge--grey {
  background: rgba(108, 108, 138, 0.12);
  border-color: rgba(108, 108, 138, 0.25);
  color: var(--sk-muted);
}

/* ---------- TOC ---------- */
.sk-toc {
  position: sticky;
  top: 148px;
  padding: 22px;
  border: 1px solid var(--sk-border);
  border-left: 3px solid var(--sk-blue);
  background: rgba(27, 27, 54, 0.7);
  border-radius: 0 12px 12px 0;
}

.sk-toc__title {
  margin: 0 0 14px;
  font-family: var(--sk-font-display);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sk-blue);
}

.sk-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sk-toc__item { margin: 0 0 4px; }

.sk-toc__link {
  display: block;
  padding: 7px 10px;
  border-left: 2px solid transparent;
  font-family: var(--sk-font-mono);
  font-size: 0.82rem;
  color: var(--sk-muted);
  text-decoration: none;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.sk-toc__link:hover {
  color: var(--sk-blue);
  background: rgba(0, 212, 255, 0.05);
}

.sk-toc__link.is-active {
  color: var(--sk-green);
  background: rgba(57, 255, 20, 0.07);
  border-left-color: var(--sk-green);
}

/* ---------- Media ---------- */
.sk-media {
  position: relative;
  overflow: hidden;
  background: var(--sk-bg-panel);
  border: 1px solid var(--sk-border);
  aspect-ratio: 16 / 9;
}

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

.sk-media--frame {
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.sk-media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(15, 15, 35, 0.8);
  color: var(--sk-muted);
  font-size: 0.74rem;
  font-family: var(--sk-font-mono);
  letter-spacing: 0.05em;
  border-top: 1px solid var(--sk-border);
}

/* ---------- Reveal ---------- */
.sk-js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
}

.sk-js [data-reveal][data-reveal-visible] {
  opacity: 1;
  transform: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

/* ---------- Responsive refinements ---------- */
@media (max-width: 980px) {
  .sk-status { display: none; }
  .sk-header__top { grid-template-columns: 1fr auto; }
}

@media (max-width: 880px) {
  .sk-nav-toggle { display: inline-flex; }

  .sk-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 1001;
    padding: 12px;
    background: var(--sk-bg-panel);
    border: 1px solid var(--sk-border);
    border-top: none;
    border-radius: 0 0 16px 16px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
  }

  .sk-nav[data-open] { display: block; }

  .sk-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    margin: 0;
    padding: 4px;
    background: transparent;
    border: none;
    border-radius: 0;
  }

  .sk-nav__link {
    justify-content: space-between;
    border-radius: 10px;
    padding: 13px 16px;
    font-size: 0.92rem;
  }

  .sk-nav__link[aria-current="page"] {
    background: rgba(57, 255, 20, 0.12);
    color: var(--sk-green);
  }

  .sk-nav__link[aria-current="page"] .sk-nav__index,
  .sk-nav__link.is-active .sk-nav__index { color: var(--sk-blue); }
}

@media (max-width: 680px) {
  .sk-search { display: none; }
}

@media (max-width: 640px) {
  .sk-header__phrase { display: none; }
}

/* ---------- 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;
  }

  .sk-js [data-reveal],
  .sk-js [data-reveal][data-reveal-visible] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .sk-btn:not(.sk-btn--ghost)::before { display: none; }
  .sk-btn:hover { transform: none; }
}