/* =====================================================================
   V站赛场 — 共享站点套件 /assets/site.css
   夜场比分牌 + 联赛档案柜：煤黑底、墨绿分区、信号橙与荧光青点睛
   ===================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, dl, dt, dd,
figure, blockquote {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
strong { font-weight: 800; }
table { border-collapse: collapse; width: 100%; }

/* --------------------------- design tokens -------------------------- */
:root {
  /* 色彩 */
  --coal: #0B0F0E;
  --ink: #0F2A22;
  --stand: #163B30;
  --orange: #FF6A2A;
  --cyan: #39F2C8;
  --paper: #F4F7F2;
  --mist: #8FA79C;
  --edge: #CFEDE4;
  --amber: #FFB547;
  --danger: #C53D1A;
  --deep-ink: #140A05;

  /* 描边与叠色 */
  --line: rgba(207, 237, 228, 0.16);
  --line-soft: rgba(207, 237, 228, 0.09);
  --line-cyan: rgba(57, 242, 200, 0.42);
  --line-orange: rgba(255, 106, 42, 0.42);

  /* 形状 */
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --pill: 999px;

  /* 字体 */
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-num: "Barlow Condensed", "DIN Alternate", "Arial Narrow", "Noto Sans SC", sans-serif;

  /* 尺寸 */
  --wrap: 1240px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --header-h: 70px;
}

/* ---------------------------- base type ----------------------------- */
body {
  min-height: 100vh;
  background-color: var(--coal);
  background-image:
    radial-gradient(90% 55% at 82% -8%, rgba(57, 242, 200, 0.07), transparent 62%),
    radial-gradient(70% 45% at 4% 0%, rgba(255, 106, 42, 0.06), transparent 58%);
  background-repeat: no-repeat;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.75;
  font-weight: 400;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#main-content { display: block; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

h1 { font-size: clamp(2rem, 4vw, 3.4rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 2.1rem); }
h3 { font-size: clamp(1.1rem, 1.6vw, 1.35rem); }
h4 { font-size: 1.02rem; }

p { max-width: 68ch; }

::selection { background: var(--cyan); color: var(--coal); }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------------------------- utilities ----------------------------- */
.wrap,
.header-inner,
.footer-plane,
.footer-legal {
  width: 100%;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(2rem, 5vw, 3.5rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.75rem;
  margin-bottom: clamp(1rem, 2.5vw, 1.75rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--cyan);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.lede {
  max-width: 62ch;
  color: var(--edge);
  font-size: 1.02rem;
}

.muted { color: var(--mist); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------ grid -------------------------------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.5rem);
}

.grid--auto { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.grid--bento { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.grid--bento > * { grid-column: 1 / -1; }

@media (min-width: 860px) {
  .grid--bento > .span-3 { grid-column: span 3; }
  .grid--bento > .span-4 { grid-column: span 4; }
  .grid--bento > .span-5 { grid-column: span 5; }
  .grid--bento > .span-6 { grid-column: span 6; }
  .grid--bento > .span-7 { grid-column: span 7; }
  .grid--bento > .span-8 { grid-column: span 8; }
  .grid--bento > .span-9 { grid-column: span 9; }
}

/* ----------------------------- buttons ------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.7rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn--primary {
  background: var(--orange);
  color: var(--deep-ink);
  box-shadow: 0 12px 26px -16px rgba(255, 106, 42, 0.95);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--cyan);
  color: var(--coal);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-cyan);
  color: var(--edge);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(57, 242, 200, 0.12);
  color: var(--cyan);
}

.btn--sm {
  min-height: 38px;
  padding: 0.42rem 0.95rem;
  font-size: 0.85rem;
}

/* ------------------------------ chips ------------------------------- */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.26rem 0.72rem;
  border: 1px solid rgba(207, 237, 228, 0.3);
  border-radius: var(--pill);
  background: rgba(207, 237, 228, 0.06);
  color: var(--edge);
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  white-space: nowrap;
}

.chip--cyan {
  color: var(--cyan);
  border-color: var(--line-cyan);
  background: rgba(57, 242, 200, 0.1);
}

.chip--orange {
  color: var(--orange);
  border-color: var(--line-orange);
  background: rgba(255, 106, 42, 0.1);
}

.chip--amber {
  color: var(--amber);
  border-color: rgba(255, 181, 71, 0.45);
  background: rgba(255, 181, 71, 0.1);
}

.chip--dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ------------------------------ cards ------------------------------- */
.card {
  position: relative;
  overflow: hidden;
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--stand) 0%, var(--ink) 100%);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan), transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.4s ease;
}

.card::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--orange), var(--cyan));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
}

.card:hover::before { transform: scaleX(1); }
.card:hover::after { opacity: 1; }

/* --------------------------- numbers/score --------------------------- */
.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.045em;
}

.score {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-num);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--orange);
}

/* --------------------------- media frames --------------------------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background-color: var(--ink);
  background-image:
    radial-gradient(80% 62% at 74% 8%, rgba(57, 242, 200, 0.16), transparent 62%),
    repeating-linear-gradient(115deg, rgba(207, 237, 228, 0.06) 0 1px, transparent 1px 9px),
    linear-gradient(155deg, #12352B 0%, var(--coal) 100%);
  isolation: isolate;
}

.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 46%;
  background: linear-gradient(180deg, transparent, rgba(11, 15, 14, 0.72));
  pointer-events: none;
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--edge);
}

/* --------------------------- breadcrumbs ---------------------------- */
.breadcrumbs {
  padding-block: 1rem 0.25rem;
  font-size: 0.82rem;
  color: var(--mist);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: rgba(207, 237, 228, 0.35);
}

.breadcrumbs a { color: var(--mist); }
.breadcrumbs a:hover { color: var(--cyan); }
.breadcrumbs [aria-current="page"] { color: var(--edge); }

/* ----------------------------- folds -------------------------------- */
.fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(22, 59, 48, 0.55);
  overflow: hidden;
}

.fold + .fold { margin-top: 0.6rem; }

.fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

.fold > summary::-webkit-details-marker { display: none; }

.fold > summary::after {
  content: "+";
  font-family: var(--font-num);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.25s ease;
}

.fold[open] > summary::after { transform: rotate(45deg); }

.fold__body {
  padding: 0 1.1rem 1.1rem;
  color: var(--edge);
  font-size: 0.96rem;
}

/* ------------------------------ prose ------------------------------- */
.prose {
  max-width: 70ch;
  color: var(--edge);
  line-height: 1.8;
}

.prose > * + * { margin-top: 1.1em; }
.prose h2 { margin-top: 2em; font-size: clamp(1.3rem, 2vw, 1.75rem); color: var(--paper); }
.prose h3 { margin-top: 1.6em; color: var(--paper); }
.prose ul { list-style: disc; padding-left: 1.3em; }
.prose li + li { margin-top: 0.35em; }
.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

/* ============================== header ============================== */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 300;
  padding: 0.7rem 1.15rem;
  border-radius: var(--pill);
  background: var(--cyan);
  color: var(--coal);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  transform: translateY(-180%);
  transition: transform 0.2s ease;
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, rgba(11, 15, 14, 0.97), rgba(11, 15, 14, 0.87));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 0.6rem 1.4rem;
  min-height: var(--header-h);
  padding-block: 0.55rem;
}

/* --- 品牌 --- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(57, 242, 200, 0.35);
  border-radius: 13px;
  background: linear-gradient(150deg, var(--stand), var(--coal));
  box-shadow: inset 0 0 0 1px rgba(11, 15, 14, 0.6);
}

.brand__mark i {
  display: block;
  width: 4px;
  border-radius: 2px;
  background: var(--cyan);
}

.brand__mark i:nth-child(1) { height: 10px; background: var(--orange); }
.brand__mark i:nth-child(2) { height: 20px; }
.brand__mark i:nth-child(3) { height: 14px; }

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  color: var(--paper);
}

.brand__tagline {
  margin-top: 0.2rem;
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* --- 导航 --- */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.12rem;
}

.nav-item { display: flex; }

.nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.38rem;
  padding: 0.5rem 0.72rem;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper);
  white-space: nowrap;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.nav-index {
  font-family: var(--font-num);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.18s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--stand);
  border-color: var(--line-cyan);
}

.nav-link:hover .nav-index,
.nav-link:focus-visible .nav-index { color: var(--cyan); }

.nav-link[aria-current="page"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--coal);
  box-shadow: 0 0 0 3px rgba(57, 242, 200, 0.15);
}

.nav-link[aria-current="page"] .nav-index { color: #0A3F33; }

/* --- 移动菜单内的快捷索引与 CTA（桌面隐藏）--- */
.nav-quick { display: none; }

.nav-quick__title {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.nav-cta-mobile { display: none; }

/* --- 头部 CTA --- */
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-height: 40px;
  padding: 0.5rem 1.05rem;
  border-radius: var(--pill);
  background: var(--orange);
  color: var(--deep-ink);
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  white-space: nowrap;
  box-shadow: 0 10px 22px -14px rgba(255, 106, 42, 0.95);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--cyan);
  color: var(--coal);
  transform: translateY(-1px);
}

/* --- 移动菜单按钮 --- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  margin-left: auto;
  padding: 0.45rem 0.85rem;
  border: 1px solid rgba(207, 237, 228, 0.24);
  border-radius: 14px;
  background: var(--stand);
  color: var(--edge);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.nav-toggle:hover { border-color: var(--line-cyan); color: var(--cyan); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-header[data-open] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.site-header[data-open] .nav-toggle { background: var(--ink); border-color: var(--line-cyan); }

/* ============================== footer ============================== */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(3rem, 8vw, 6rem);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink) 0%, #070B0A 78%);
  color: var(--paper);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 78% at 88% -12%, rgba(57, 242, 200, 0.1), transparent 62%),
    radial-gradient(90% 66% at 0% -6%, rgba(255, 106, 42, 0.1), transparent 58%);
}

.site-footer::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 78px;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, rgba(207, 237, 228, 0.055) 0 2px, transparent 2px 12px);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000);
  mask-image: linear-gradient(180deg, transparent, #000);
}

.footer-plane {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr);
  gap: clamp(1.75rem, 5vw, 4rem);
  padding-block: clamp(2.25rem, 5vw, 3.75rem) clamp(1.5rem, 3vw, 2.25rem);
}

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

.brand--footer { margin-bottom: 1.1rem; }

.footer-pitch {
  max-width: 34ch;
  color: var(--edge);
  font-size: 0.94rem;
  line-height: 1.7;
}

.footer-contact {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.35rem;
  font-size: 0.9rem;
}

.footer-contact__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 0.9rem;
  align-items: baseline;
}

.footer-contact dt {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.footer-contact dd {
  color: var(--edge);
  overflow-wrap: anywhere;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 3vw, 2rem);
  align-content: start;
}

.footer-col__title {
  margin-bottom: 0.85rem;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.footer-col__list li + li { margin-top: 0.45rem; }

.footer-link {
  display: inline-block;
  padding-block: 0.18rem;
  color: var(--edge);
  font-size: 0.93rem;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

.footer-legal {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem 1.5rem;
  padding-block: 1.1rem 1.6rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.82rem;
  color: var(--mist);
}

.footer-legal__icp {
  font-family: var(--font-num);
  letter-spacing: 0.09em;
  color: var(--amber);
}

.footer-legal__copy { color: var(--mist); }

/* ======================= runtime elements (js) ====================== */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 150;
  width: 100%;
  height: 3px;
  pointer-events: none;
}

.scroll-meter__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  box-shadow: 0 0 14px rgba(57, 242, 200, 0.55);
  transition: width 0.09s linear;
}

.to-top {
  position: fixed;
  right: clamp(0.75rem, 2vw, 1.75rem);
  bottom: clamp(0.9rem, 3vw, 2rem);
  z-index: 120;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--line-cyan);
  border-radius: var(--pill);
  background: var(--stand);
  color: var(--edge);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.2s ease, color 0.2s ease;
}

.to-top[data-visible] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.to-top:hover,
.to-top:focus-visible {
  background: var(--cyan);
  color: var(--coal);
}

.to-top__arrow {
  font-family: var(--font-num);
  font-size: 1rem;
  line-height: 1;
}

/* --------------------------- reveal on scroll ----------------------- */
[data-reveal] { transition: opacity 0.55s ease, transform 0.55s ease; }
[data-reveal].is-prepared { opacity: 0; transform: translateY(18px); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ============================ responsive ============================ */
@media (max-width: 1024px) {
  :root { --header-h: 64px; }

  .header-cta { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    max-height: 0;
    padding-inline: var(--gutter);
    overflow: hidden auto;
    visibility: hidden;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, #112F27 0%, var(--coal) 92%);
    box-shadow: 0 26px 40px -30px rgba(0, 0, 0, 0.9);
    transition: max-height 0.34s ease, visibility 0.34s ease, padding-block 0.34s ease;
  }

  .site-header[data-open] .site-nav {
    max-height: min(76vh, 620px);
    padding-block: 0.85rem 1.35rem;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0.15rem;
  }

  .nav-item { display: block; }

  .nav-link {
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 0.95rem;
    border-radius: 14px;
    font-size: 1rem;
  }

  .nav-index { font-size: 0.72rem; }

  .nav-quick {
    display: block;
    margin-top: 0.95rem;
    padding-top: 0.95rem;
    border-top: 1px dashed rgba(207, 237, 228, 0.2);
  }

  .nav-cta-mobile {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    margin-top: 1rem;
    padding: 0.7rem 1.1rem;
    border-radius: var(--pill);
    background: var(--orange);
    color: var(--deep-ink);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.03em;
  }

  .nav-cta-mobile:hover,
  .nav-cta-mobile:focus-visible {
    background: var(--cyan);
    color: var(--coal);
  }
}

@media (max-width: 900px) {
  .footer-plane {
    grid-template-columns: minmax(0, 1fr);
    gap: clamp(1.75rem, 4vw, 2.5rem);
  }

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

@media (max-width: 620px) {
  .brand__tagline { display: none; }
  .brand__mark { width: 36px; height: 36px; border-radius: 11px; }
  .nav-toggle__text { display: none; }
  .nav-toggle { width: 44px; justify-content: center; padding-inline: 0; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }

  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .to-top__text { display: none; }
  .to-top { width: 46px; justify-content: center; padding-inline: 0; }
}

@media (max-width: 400px) {
  .nav-link { font-size: 0.95rem; }
  .chip { font-size: 0.72rem; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal],
  [data-reveal].is-prepared {
    opacity: 1 !important;
    transform: none !important;
  }

  .card:hover { transform: none; }
  .btn--primary:hover,
  .header-cta:hover { transform: none; }
}