/* ============================================================
   insider-lejing.com.cn — shared shell stylesheet (/assets/site.css)
   夜间战术板：墨蓝基底 + 荧光绿操作项 + 橙红数据差异
   ============================================================ */

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

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

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

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

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

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

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

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

:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }

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

/* ---------- tokens ---------- */
:root {
  --ink: #08121F;
  --hull: #0C1A2B;
  --panel: #102338;
  --checker: #17324C;
  --line: #2A4A66;
  --paper: #F4EFE4;
  --mush: #DCD3C0;
  --green: #B9FF3C;
  --green-2: #6F9E1F;
  --pulse: #FF5A2B;
  --amber: #FFC24B;
  --slate: #9FB3C6;
  --text: #E7EEF5;

  --wrap: 1504px;
  --wrap-wide: 1664px;
  --gutter: 20px;
  --t: 200ms;
  --t-slow: 320ms;

  --mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ---------- base typography ---------- */
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  overflow-wrap: break-word;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.22; letter-spacing: -0.01em; }

h1 { font-size: clamp(32px, 5vw, 60px); }
h2 { font-size: clamp(24px, 2.6vw, 34px); }
h3 { font-size: 20px; font-weight: 600; }

p { color: inherit; }

strong { font-weight: 600; color: var(--paper); }

.mono, .num, code, kbd { font-family: var(--mono); font-variant-numeric: tabular-nums; }

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

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
}

[id] { scroll-margin-top: 112px; }

.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;
}

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.wrap--wide { max-width: var(--wrap-wide); }

.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; }

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }

.section { padding-block: clamp(48px, 6.5vw, 92px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 24px;
  padding-bottom: 16px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.section__title { font-size: clamp(22px, 2.4vw, 32px); color: var(--paper); }

.section__lead { color: var(--slate); font-size: 15px; max-width: 62ch; }

.divider-rule {
  height: 8px;
  margin-block: 40px;
  background: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 16px);
  opacity: 0.75;
}

.prose { max-width: 72ch; font-size: 16px; line-height: 1.85; }
.prose p + p { margin-top: 18px; }
.prose h2 { margin-top: 40px; margin-bottom: 14px; font-size: 24px; }
.prose h3 { margin-top: 28px; margin-bottom: 10px; }
.prose ul { display: grid; gap: 8px; margin-top: 14px; }
.prose li { position: relative; padding-left: 20px; color: var(--slate); }
.prose li::before {
  content: "";
  position: absolute; left: 0; top: 0.78em;
  width: 8px; height: 1px;
  background: var(--green);
}
.prose a { color: var(--green); border-bottom: 1px solid currentColor; }

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  top: -80px;
  left: 16px;
  z-index: 200;
  padding: 12px 18px;
  background: var(--green);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  border-radius: 2px;
  transition: top var(--t) ease;
}
.skip-link:focus { top: 14px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: background var(--t), color var(--t), border-color var(--t);
}
.btn:hover { border-color: var(--green); color: var(--green); }

.btn--primary { background: var(--green); border-color: var(--green); color: var(--ink); }
.btn--primary:hover { background: var(--green-2); border-color: var(--green-2); color: var(--ink); }

.btn--ghost { background: transparent; color: var(--slate); }
.btn--ghost:hover { color: var(--green); background: rgba(185, 255, 60, 0.06); }

.btn--sm { padding: 8px 12px; font-size: 13px; }
.btn--block { width: 100%; }

.btn[disabled],
.btn[aria-disabled="true"] {
  opacity: 0.5;
  filter: saturate(0.35);
  cursor: not-allowed;
}

/* ---------- breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}
.breadcrumb__link { border-bottom: 1px solid transparent; transition: color var(--t), border-color var(--t); }
.breadcrumb__link:hover { color: var(--green); border-bottom-color: var(--green); }
.breadcrumb__sep { color: var(--line); }
.breadcrumb__item[aria-current="page"] { color: var(--paper); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

/* upper layer */
.brandbar {
  max-height: 260px;
  overflow: hidden;
  background: var(--hull);
  border-bottom: 1px solid var(--line);
  transition: max-height var(--t-slow) ease, opacity var(--t) ease;
}
.site-header.is-condensed .brandbar {
  max-height: 0;
  opacity: 0;
  border-bottom-color: transparent;
}

.brandbar__inner {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 44px);
  min-height: 76px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }

.brand__mark {
  position: relative;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  border: 1px solid var(--green);
  background:
    linear-gradient(var(--green), var(--green)) center / 1px 100% no-repeat,
    linear-gradient(var(--green), var(--green)) center / 100% 1px no-repeat;
}
.brand__mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--green);
}

.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__name { font-size: 16px; font-weight: 700; color: var(--paper); letter-spacing: 0.02em; }
.brand__claim {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--green);
}

.search-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1 1 auto;
  max-width: 520px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(23, 50, 76, 0.45);
  transition: border-color var(--t), background var(--t);
}
.search-rail:hover { border-color: var(--green); background: rgba(23, 50, 76, 0.8); }

.search-rail__icon {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  border: 1px solid var(--slate);
  border-radius: 50%;
}
.search-rail__icon::after {
  content: "";
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 6px;
  height: 1px;
  background: var(--slate);
  transform: rotate(45deg);
}

.search-rail__body { display: flex; flex-direction: column; min-width: 0; line-height: 1.35; }
.search-rail__label { font-size: 13px; color: var(--text); }
.search-rail__dims {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--slate);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-rail__key {
  margin-left: auto;
  padding: 2px 6px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--green);
}

.quick-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

/* lower layer */
.navbar {
  position: relative;
  background: var(--ink);
  border-top: 1px solid rgba(42, 74, 102, 0.55);
}

.navbar__inner { display: flex; align-items: center; gap: 20px; min-height: 56px; }

.nav-list { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }

.nav-link {
  position: relative;
  display: inline-block;
  padding: 17px 14px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--slate);
  transition: color var(--t), background var(--t);
}
.nav-link::before {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 9px;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms ease;
}
.nav-link:hover { color: var(--paper); }
.nav-link:hover::before { transform: scaleX(1); }
.nav-link[aria-current="page"] { color: var(--green); }
.nav-link[aria-current="page"]::before { transform: scaleX(1); }

.navbar__meta {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
  white-space: nowrap;
}

/* mobile toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
  color: var(--paper);
  font-size: 13px;
  font-weight: 600;
}
.nav-toggle__bar {
  width: 16px;
  height: 1px;
  background: var(--green);
  box-shadow: 0 5px 0 var(--green), 0 -5px 0 var(--green);
}
.nav-toggle__text { font-family: var(--mono); letter-spacing: 0.12em; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  margin-top: 0;
  background-color: var(--hull);
  background-image:
    linear-gradient(to right, rgba(42, 74, 102, 0.26) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 74, 102, 0.26) 1px, transparent 1px);
  background-size: 48px 48px;
  border-top: 1px solid var(--line);
  color: var(--slate);
}
.site-footer::before {
  content: "";
  display: block;
  height: 8px;
  background: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 18px);
  opacity: 0.85;
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, minmax(120px, 0.85fr)) 1.5fr;
  gap: 40px 32px;
  align-items: start;
  padding-block: 60px 48px;
}

.footer__brand { max-width: 320px; }
.brand--footer .brand__name { font-size: 17px; }

.footer__note { margin-top: 18px; font-size: 14px; line-height: 1.7; color: var(--slate); }
.footer__note--tight { margin-top: 16px; font-size: 13px; }

.footer__sig {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--green);
}

.footer__cols {
  display: contents;
}

.footer__col { min-width: 0; }

.footer__col-title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
}

.footer-links { display: grid; gap: 10px; }

.footer-link {
  display: inline-block;
  font-size: 14px;
  color: var(--slate);
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.footer-link:hover { color: var(--green); border-bottom-color: var(--green); }

.footer__contact { border-left: 1px solid var(--line); padding-left: 24px; }

.contact-line {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px dashed rgba(42, 74, 102, 0.7);
  font-size: 13.5px;
}
.contact-line__key {
  flex: 0 0 46px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}
.contact-line__val { color: var(--text); overflow-wrap: anywhere; }

.footer__bottom { background: var(--ink); border-top: 1px solid var(--line); }

.footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 24px;
  padding-block: 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.footer__legal, .footer__icp { font-family: var(--mono); }

/* ============================================================
   SHARED COMPONENTS
   ============================================================ */
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  background: var(--checker);
  border-bottom: 1px solid var(--line);
}
.panel__title {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper);
}
.panel__body { padding: 18px; }

.panel--paper {
  background: var(--paper);
  border-color: #C9C1AE;
  color: var(--ink);
}
.panel--paper .panel__head { background: var(--mush); border-bottom-color: #C9C1AE; }
.panel--paper .panel__title { color: #3B3226; }
.panel--paper .muted { color: #6B6152; }

.scale-frame {
  position: relative;
  padding: clamp(24px, 4vw, 60px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(12, 26, 43, 0.62);
}
.scale-frame::before,
.scale-frame::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 6px;
  pointer-events: none;
  background: repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 24px);
}
.scale-frame::before { top: -7px; }
.scale-frame::after { bottom: -7px; }

.checker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.checker__cell {
  padding: 16px 18px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background var(--t), box-shadow var(--t);
}
.checker__cell:nth-child(even) { background: var(--checker); }
.checker__cell:hover { background: var(--checker); box-shadow: inset 0 0 0 1px var(--green); }

.bar {
  display: grid;
  grid-template-columns: minmax(84px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(42, 74, 102, 0.55);
}
.bar__label { font-size: 14px; color: var(--slate); }
.bar__track {
  position: relative;
  height: 10px;
  background: var(--ink);
  border: 1px solid var(--line);
  overflow: hidden;
}
.bar__fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--green);
  transition: width var(--t-slow) cubic-bezier(0.22, 0.61, 0.36, 1);
}
.bar.is-on .bar__fill { width: var(--v, 0%); }
.bar--pulse .bar__fill { background: var(--pulse); }
.bar--amber .bar__fill { background: var(--amber); }
.bar__value {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--hull);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--slate);
}
.tag--green { border-color: var(--green); color: var(--green); }
.tag--pulse { border-color: var(--pulse); color: var(--pulse); }
.tag--amber { border-color: var(--amber); color: var(--amber); }

.rail {
  position: sticky;
  top: 96px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
}
.rail__title {
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.rail__list { display: grid; gap: 2px; }
.rail-link {
  position: relative;
  display: block;
  padding: 9px 10px 9px 16px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--slate);
  transition: color var(--t), background var(--t), border-color var(--t);
}
.rail-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--green);
  transform: translateY(-50%);
  transition: width 200ms ease;
}
.rail-link:hover { color: var(--paper); background: rgba(23, 50, 76, 0.5); }
.rail-link.is-active {
  color: var(--green);
  border-left-color: var(--green);
  background: rgba(185, 255, 60, 0.07);
}
.rail-link.is-active::before { width: 4px; }

.step-list { border-top: 1px solid var(--line); }
.step {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
}
.step__no { font-family: var(--mono); font-size: 20px; font-weight: 500; color: var(--green); }
.step__title { font-size: 17px; font-weight: 600; color: var(--paper); }
.step__body { margin-top: 6px; font-size: 14.5px; color: var(--slate); }
.step.is-done .step__no { color: var(--green-2); }
.step.is-done .step__title::after {
  content: "已完成";
  margin-left: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--green-2);
}

.stat { padding-left: 14px; border-left: 2px solid var(--green); }
.stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}
.stat__label { font-size: 13px; color: var(--slate); }

.table { font-size: 14px; }
.table th {
  padding: 10px 12px;
  background: var(--checker);
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  color: var(--slate);
}
.table td { padding: 10px 12px; border: 1px solid var(--line); color: var(--text); }
.table tbody tr:nth-child(even) td { background: rgba(23, 50, 76, 0.38); }
.table__num { font-family: var(--mono); color: var(--paper); font-variant-numeric: tabular-nums; }

.compare-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  background: var(--hull);
  border-radius: 2px;
  overflow: hidden;
}
.compare-switch__btn {
  padding: 8px 14px;
  border-right: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--slate);
  transition: background var(--t), color var(--t);
}
.compare-switch__btn:last-child { border-right: 0; }
.compare-switch__btn:hover { color: var(--paper); background: var(--checker); }
.compare-switch__btn.is-active { background: var(--green); color: var(--ink); font-weight: 600; }

[data-compare-panel] { display: none; }
[data-compare-panel].is-on { display: block; display: revert; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.card {
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: border-color var(--t), background var(--t);
}
.card:hover { border-color: var(--green); background: var(--checker); }

/* responsive media base — page stage drops the <img> in */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--panel);
}
.media__img { width: 100%; height: 100%; object-fit: cover; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--square { aspect-ratio: 1 / 1; }
.media--pitch { aspect-ratio: 3 / 2; }
.media__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: linear-gradient(to top, rgba(8, 18, 31, 0.9), rgba(8, 18, 31, 0));
}
.media--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background-image:
    linear-gradient(to right, rgba(42, 74, 102, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 74, 102, 0.45) 1px, transparent 1px);
  background-size: 32px 32px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}
.media--placeholder::after { content: attr(data-label); padding: 0 16px; text-align: center; }

/* ============================================================
   INJECTED UI (progress rail / return to top)
   ============================================================ */
.progress-rail {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: transparent;
}
.progress-rail__fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--green) 0%, var(--amber) 70%, var(--pulse) 100%);
}

.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 110;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 15px;
  border: 1px solid var(--green);
  border-radius: 2px;
  background: var(--panel);
  color: var(--green);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 220ms ease, transform 220ms ease, visibility 220ms, background var(--t), color var(--t);
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--green); color: var(--ink); }

/* ============================================================
   BREAKPOINTS
   ============================================================ */
@media (min-width: 768px) {
  :root { --gutter: 32px; }
}

@media (min-width: 1440px) {
  :root { --gutter: 64px; }
}

@media (max-width: 1180px) {
  .navbar__meta { display: none; }
  .footer__inner { grid-template-columns: 1fr 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; max-width: 560px; }
  .footer__contact { grid-column: 1 / -1; border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 28px; }
}

@media (max-width: 960px) {
  .brandbar__inner {
    flex-wrap: wrap;
    row-gap: 12px;
    min-height: 0;
    padding-block: 14px;
  }
  .search-rail { order: 3; flex: 1 0 100%; max-width: none; }
  .quick-actions { margin-left: auto; }

  .navbar__inner { justify-content: space-between; min-height: 52px; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 8px var(--gutter) 20px;
    background: var(--hull);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.45);
  }
  .site-header[data-open] .site-nav { display: block; }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list__item { border-bottom: 1px solid rgba(42, 74, 102, 0.55); }
  .nav-list__item:last-child { border-bottom: 0; }

  .nav-link { display: block; padding: 14px 12px; font-size: 16px; }
  .nav-link::before { display: none; }
  .nav-link:hover { background: rgba(23, 50, 76, 0.55); }
  .nav-link[aria-current="page"] {
    color: var(--green);
    background: rgba(185, 255, 60, 0.07);
    box-shadow: inset 3px 0 0 var(--green);
  }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3, .col-4, .col-5 { grid-column: span 6; }
  .col-6, .col-7, .col-8 { grid-column: span 6; }

  .rail { position: static; top: auto; }
}

@media (max-width: 640px) {
  .quick-actions .btn--ghost { display: none; }
  .footer__inner { grid-template-columns: 1fr 1fr; padding-block: 44px 36px; }
  .footer__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 24px; grid-column: 1 / -1; }
  .footer__contact { grid-column: 1 / -1; }
  .footer__bottom-inner { flex-direction: column; }
  .to-top { right: 14px; bottom: 14px; }
  .bar { grid-template-columns: minmax(0, 1fr) auto; row-gap: 6px; }
  .bar__label { grid-column: 1; }
  .bar__track { grid-column: 1 / -1; order: 3; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@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;
  }

  .brandbar { transition: none; }
  .bar__fill { transition: none; }
  .to-top { transition: opacity 0.001ms, visibility 0.001ms; transform: none; }
  .rail-link::before { transition: none; }
}