/* ============================================================
   圣魔安卓站 · 共享样式 /assets/site.css
   深空黑底 / 霓虹青主强调 / 电光紫渐层 / 圣魔红行动点
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
  overflow-x: hidden;
}
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #05070C;
  --ink-2: #0B1018;
  --line: #1A2330;
  --fog: #E8EEF6;
  --cyan: #2CE8E0;
  --violet: #7A4DFF;
  --red: #FF3B5C;
  --green: #7CFF6B;
  --slate: #47566B;
  --mist: #9FE8E4;

  --font-display: "Noto Sans SC", "Source Han 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-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --max: 1280px;
  --narrow: 720px;
  --gut: clamp(16px, 4vw, 40px);
  --r-sharp: 2px;
  --r-pill: 999px;
  --header-h: 72px;
  --ease: cubic-bezier(.22, .8, .28, 1);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  letter-spacing: .01em;
  background-color: var(--ink);
  background-image:
    radial-gradient(880px 620px at 6% -8%, rgba(122, 77, 255, .20), transparent 62%),
    radial-gradient(760px 560px at 106% 106%, rgba(44, 232, 224, .13), transparent 62%),
    linear-gradient(to right, rgba(122, 77, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(122, 77, 255, .05) 1px, transparent 1px),
    linear-gradient(to right, rgba(44, 232, 224, .04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44, 232, 224, .04) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 64px 64px, 64px 64px, 8px 8px, 8px 8px;
  background-attachment: fixed;
  overflow-x: hidden;
}
::selection { background: rgba(44, 232, 224, .3); color: #fff; }
:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
  border-radius: var(--r-sharp);
}

/* ---------- 4. Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--fog);
}
p { text-wrap: pretty; }

.display {
  font-size: clamp(44px, 7.4vw, 96px);
  line-height: .98;
  letter-spacing: -.035em;
  transform: rotate(-2deg);
  transform-origin: left center;
  text-shadow: 0 0 1px var(--cyan), 0 0 34px rgba(44, 232, 224, .22);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.mono { font-family: var(--font-mono); letter-spacing: .04em; }
.v-note {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--slate);
  user-select: none;
}
.v-note--flip { transform: rotate(180deg); }

.prose {
  max-width: var(--narrow);
  font-size: 16px;
  line-height: 1.95;
  color: rgba(232, 238, 246, .82);
}
.prose > * + * { margin-top: 1.25em; }
.prose h2 { font-size: clamp(24px, 3vw, 34px); margin-top: 2.2em; }
.prose h3 { font-size: 20px; margin-top: 1.8em; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(44, 232, 224, .38); }
.prose a:hover { border-bottom-color: var(--cyan); }
.prose ul, .prose ol { padding-left: 1.35em; }
.prose ul { list-style: square; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: .5em; }
.prose strong { color: var(--fog); font-weight: 700; }
.prose code {
  font-family: var(--font-mono);
  font-size: .88em;
  color: var(--mist);
  background: rgba(44, 232, 224, .08);
  padding: 2px 6px;
  border-radius: var(--r-sharp);
}
.prose blockquote {
  border-left: 2px solid var(--violet);
  padding: 4px 0 4px 20px;
  color: rgba(232, 238, 246, .7);
}

/* ---------- 5. Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gut);
}
.container--narrow { max-width: calc(var(--narrow) + var(--gut) * 2); }
.container--wide { max-width: 1440px; }

.section { position: relative; padding: clamp(72px, 10vw, 140px) 0; }
.section--tight { padding: clamp(40px, 5vw, 64px) 0; }
.section--bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
}

.section-band {
  position: relative;
  height: clamp(110px, 15vw, 200px);
  background: linear-gradient(100deg, rgba(44, 232, 224, .16), rgba(122, 77, 255, .24) 52%, rgba(5, 7, 12, 0));
  border-top: 1px solid rgba(44, 232, 224, .18);
  border-bottom: 1px solid rgba(122, 77, 255, .2);
  clip-path: polygon(0 0, 100% 10%, 100% 100%, 0 88%);
  overflow: hidden;
}

.section-head { margin-bottom: clamp(32px, 5vw, 64px); }
.section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .3em;
  color: var(--cyan);
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(28px, 4.4vw, 52px);
  font-weight: 900;
  letter-spacing: -.022em;
  line-height: 1.05;
}
.section-note {
  margin-top: 16px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(232, 238, 246, .6);
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  background: rgba(11, 16, 24, .72);
  color: var(--fog);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: .02em;
  transition: border-color .16s var(--ease), color .16s var(--ease),
              background-color .16s var(--ease), box-shadow .16s var(--ease);
}
.btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(44, 232, 224, .18), 12px 14px 40px -24px rgba(44, 232, 224, .95);
}
.btn--primary {
  border-color: transparent;
  background: linear-gradient(110deg, var(--red), #FF7A3C);
  color: #fff;
}
.btn--primary:hover {
  color: #fff;
  border-color: transparent;
  box-shadow: 14px 16px 42px -22px rgba(255, 59, 92, .95);
}
.btn--ghost { background: transparent; border-color: rgba(44, 232, 224, .42); color: var(--cyan); }
.btn--ghost:hover { background: rgba(44, 232, 224, .08); }
.btn--link { padding: 0; border: 0; background: none; color: var(--cyan); }
.btn--link:hover { box-shadow: none; color: var(--mist); }
.btn--sm { padding: 9px 16px; font-size: 13px; }

/* ---------- 7. Breadcrumb ---------- */
.breadcrumb { padding: 22px 0 0; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}
.breadcrumb__item { display: inline-flex; align-items: center; }
.breadcrumb__item:not(:first-child)::before { content: "/"; margin: 0 10px; color: rgba(71, 86, 107, .8); }
.breadcrumb__link { color: var(--slate); transition: color .16s var(--ease); }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__link[aria-current="page"] { color: var(--fog); }

/* ---------- 8. Grid & cards ---------- */
.grid { display: grid; gap: clamp(16px, 2.2vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
.grid--split-alt { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: start; }

.card {
  position: relative;
  padding: clamp(22px, 2.2vw, 30px);
  background: rgba(11, 16, 24, .72);
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  transition: border-color .18s var(--ease), background-color .18s var(--ease),
              box-shadow .18s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 60%, transparent);
  opacity: 0;
  transition: opacity .18s var(--ease);
}
.card:hover {
  border-color: rgba(44, 232, 224, .5);
  background: rgba(11, 16, 24, .94);
  box-shadow: -28px -26px 64px -52px rgba(44, 232, 224, .95);
}
.card:hover::before { opacity: 1; }
.card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}
.card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
  flex: none;
}
.card__title { font-size: 19px; font-weight: 700; line-height: 1.42; letter-spacing: -.01em; }
.card__body { font-size: 14.5px; line-height: 1.85; color: rgba(232, 238, 246, .68); }
.card__meta {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px dotted var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--slate);
}

/* ---------- 9. Tags & dots ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(232, 238, 246, .7);
}
.tag--cyan { border-color: rgba(44, 232, 224, .45); color: var(--cyan); background: rgba(44, 232, 224, .08); }
.tag--violet { border-color: rgba(122, 77, 255, .5); color: #B9A2FF; background: rgba(122, 77, 255, .12); }
.tag--red { border-color: rgba(255, 59, 92, .5); color: #FF849B; background: rgba(255, 59, 92, .1); }
.tag--green { border-color: rgba(124, 255, 107, .45); color: var(--green); background: rgba(124, 255, 107, .08); }

.dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; flex: none; background: var(--slate); }
.dot--cyan { background: var(--cyan); box-shadow: 0 0 0 3px rgba(44, 232, 224, .16); }
.dot--green { background: var(--green); box-shadow: 0 0 0 3px rgba(124, 255, 107, .16); }
.dot--red { background: var(--red); box-shadow: 0 0 0 3px rgba(255, 59, 92, .16); }

/* ---------- 10. Meta rows ---------- */
.meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dotted var(--line);
}
.meta-row:last-child { border-bottom: 0; }
.meta-key { flex: none; font-size: 13px; color: var(--slate); }
.meta-val {
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(232, 238, 246, .88);
  text-align: right;
  word-break: break-word;
}

/* ---------- 11. Media containers ---------- */
.media {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  background-color: var(--ink-2);
  background-image: linear-gradient(135deg, rgba(44, 232, 224, .14), rgba(122, 77, 255, .22) 58%, rgba(255, 59, 92, .08));
}
.media__img { width: 100%; height: 100%; object-fit: cover; }
.media__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(232, 238, 246, .82);
  background: linear-gradient(to top, rgba(5, 7, 12, .92), transparent);
}
.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--bleed {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  border-left: 0;
  border-right: 0;
  border-radius: 0;
}

/* ---------- 12. Accordion ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }
.accordion__trigger {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 20px 4px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 500;
  color: var(--fog);
  transition: color .16s var(--ease);
}
.accordion__trigger:hover { color: var(--cyan); }
.accordion__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.accordion__icon { position: relative; margin-left: auto; width: 14px; height: 14px; flex: none; }
.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  background: currentColor;
  transition: transform .18s var(--ease);
}
.accordion__icon::after { transform: rotate(90deg); }
.accordion__trigger[aria-expanded="true"] .accordion__icon::after { transform: rotate(0deg); }
.accordion__panel {
  padding: 0 4px 26px 44px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(232, 238, 246, .72);
}
.accordion__panel[hidden] { display: none; }

/* ---------- 13. Filter ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-chip {
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(232, 238, 246, .66);
  transition: border-color .16s var(--ease), color .16s var(--ease), background-color .16s var(--ease);
}
.filter-chip:hover { border-color: rgba(44, 232, 224, .5); color: var(--fog); }
.filter-chip[aria-pressed="true"] {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(44, 232, 224, .1);
}

/* ---------- 14. Header ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 300;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--r-sharp);
  transition: top .16s var(--ease);
}
.skip-link:focus { top: 12px; }

.sm-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(5, 7, 12, .85);
  background-image: linear-gradient(90deg, rgba(44, 232, 224, .06), rgba(122, 77, 255, .06));
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
}
.sm-header__inner {
  display: flex;
  align-items: center;
  gap: 22px;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gut);
  height: var(--header-h);
  transition: height .2s var(--ease);
}
.sm-header[data-scrolled] .sm-header__inner { height: 60px; }

.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand__mark {
  display: block;
  width: 30px;
  height: 30px;
  flex: none;
  color: var(--cyan);
  filter: drop-shadow(0 0 6px rgba(44, 232, 224, .5));
  transition: color .16s var(--ease);
}
.brand:hover .brand__mark { color: var(--fog); }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-size: 17px; font-weight: 900; letter-spacing: .06em; color: var(--fog); }
.brand__sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--slate);
  text-transform: uppercase;
}

.pill-nav {
  margin: 0 auto;
  padding: 5px;
  background: rgba(11, 16, 24, .86);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
}
.pill-nav__list { display: flex; align-items: center; gap: 2px; }
.pill-nav__item { display: flex; }
.pill-nav__link {
  display: block;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 500;
  color: rgba(232, 238, 246, .72);
  white-space: nowrap;
  transition: color .16s var(--ease), background-color .16s var(--ease), box-shadow .16s var(--ease);
}
.pill-nav__link:hover { color: var(--fog); background: rgba(44, 232, 224, .09); }
.pill-nav__link[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
  background: var(--cyan);
  box-shadow: 0 0 20px -6px rgba(44, 232, 224, .85);
}

.header-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; flex: 0 0 auto; }

.export { position: relative; }
.export__btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 18px;
  border: 1px solid rgba(255, 59, 92, .55);
  border-radius: var(--r-pill);
  background: linear-gradient(120deg, rgba(255, 59, 92, .18), rgba(122, 77, 255, .18));
  color: var(--fog);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.export__btn:hover { border-color: var(--red); box-shadow: 0 0 24px -8px rgba(255, 59, 92, .9); }
.export__btn[aria-expanded="true"] {
  border-color: var(--red);
  box-shadow: inset 0 0 0 1px rgba(255, 59, 92, .35), 0 0 24px -10px rgba(255, 59, 92, .9);
}
.export__pip {
  width: 6px;
  height: 6px;
  flex: none;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 3px rgba(255, 59, 92, .18);
}
.export__panel {
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  z-index: 130;
  width: min(330px, calc(100vw - 32px));
  padding: 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  box-shadow: -30px -26px 70px -46px rgba(44, 232, 224, .85);
}
.export__panel[hidden] { display: none; }
.export__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.export__list { display: grid; gap: 6px; margin-bottom: 14px; }
.export__option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 10px 12px;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--r-sharp);
  font-size: 14px;
  color: rgba(232, 238, 246, .8);
  transition: border-color .16s var(--ease), background-color .16s var(--ease), color .16s var(--ease);
}
.export__option:hover { border-color: rgba(44, 232, 224, .55); background: rgba(44, 232, 224, .06); color: var(--fog); }
.export__option[aria-pressed="true"] { border-color: var(--cyan); background: rgba(44, 232, 224, .1); color: var(--fog); }
.export__fmt {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--slate);
}
.export__option[aria-pressed="true"] .export__fmt { color: var(--cyan); }
.export__hint { font-size: 12px; line-height: 1.75; color: var(--slate); }

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  flex: none;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(11, 16, 24, .86);
}
.nav-toggle__bar {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--fog);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@keyframes navdrop {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 15. Footer ---------- */
.sm-footer {
  position: relative;
  margin-top: clamp(72px, 10vw, 140px);
  background: var(--ink-2);
  background-image: radial-gradient(720px 400px at 0% 0%, rgba(122, 77, 255, .16), transparent 62%);
  border-top: 1px solid var(--line);
}
.sm-footer::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 46%, transparent 92%);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 48px 32px;
  padding: clamp(56px, 7vw, 84px) 0 clamp(40px, 5vw, 56px);
}
.footer__col { min-width: 0; }
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer__brand .brand__mark { width: 26px; height: 26px; }
.footer__tagline { max-width: 28ch; font-size: 14.5px; line-height: 1.85; color: rgba(232, 238, 246, .64); }
.footer__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer__title::before { content: ""; width: 14px; height: 1px; background: var(--cyan); }
.footer__list { display: grid; gap: 10px; }
.footer__link {
  position: relative;
  display: inline-block;
  font-size: 14px;
  color: rgba(232, 238, 246, .72);
  transition: color .16s var(--ease);
}
.footer__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%; height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s var(--ease);
}
.footer__link:hover { color: var(--fog); }
.footer__link:hover::after { transform: scaleX(1); }
.footer__link--sm { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .04em; }

.footer__contact { display: grid; gap: 12px; }
.footer__contact-row { display: grid; gap: 2px; }
.footer__contact-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}
.footer__contact-val { font-size: 14px; line-height: 1.7; color: rgba(232, 238, 246, .86); word-break: break-word; }
.footer__contact-val--mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: .02em; }
.footer__note { font-size: 12.5px; line-height: 1.75; color: var(--slate); }
.footer__icp { font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; color: var(--slate); }

.footer__bottom { border-top: 1px solid var(--line); }
.footer__bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 22px 0 30px;
}
.footer__copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--slate);
}
.footer__copy b { font-weight: 500; color: rgba(232, 238, 246, .7); }
.footer__quick { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }

/* ---------- 16. Runtime UI ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 200;
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--red));
  box-shadow: 0 0 14px rgba(44, 232, 224, .75);
}
.to-top {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  z-index: 150;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(44, 232, 224, .42);
  border-radius: var(--r-pill);
  background: rgba(11, 16, 24, .9);
  color: var(--cyan);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity .18s var(--ease), transform .18s var(--ease),
              visibility .18s var(--ease), border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--cyan); box-shadow: 0 0 26px -8px rgba(44, 232, 224, .95); }
.to-top__arrow {
  width: 11px;
  height: 11px;
  border-top: 1.5px solid currentColor;
  border-left: 1.5px solid currentColor;
  transform: rotate(45deg);
}

[data-reveal] { transition: opacity .22s var(--ease), transform .22s var(--ease); }

/* ---------- 17. Responsive ---------- */
@media (max-width: 1180px) {
  .pill-nav__link { padding: 8px 12px; font-size: 13.5px; }
}
@media (max-width: 1080px) {
  :root { --header-h: 64px; }
  .sm-header__inner { gap: 14px; }
  .nav-toggle { display: inline-flex; }
  .pill-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: var(--gut);
    right: var(--gut);
    margin: 0;
    padding: 10px;
    border-radius: 4px;
    display: none;
    box-shadow: -28px -24px 66px -44px rgba(44, 232, 224, .85);
  }
  .pill-nav[data-open] { display: block; animation: navdrop .18s var(--ease) both; }
  .pill-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .pill-nav__link { padding: 12px 16px; border-radius: var(--r-sharp); font-size: 15px; }
  .pill-nav__link[aria-current="page"] {
    background: rgba(44, 232, 224, .14);
    color: var(--cyan);
    box-shadow: inset 2px 0 0 var(--cyan);
  }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 40px 28px; }
}
@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--split, .grid--split-alt { grid-template-columns: minmax(0, 1fr); }
  .display { transform: rotate(-1deg); }
}
@media (max-width: 640px) {
  .brand__sub { display: none; }
  .brand__name { font-size: 15.5px; }
  .export__btn { padding: 8px 14px; font-size: 13px; }
  .export__panel {
    position: fixed;
    top: calc(var(--header-h) + 12px);
    left: 16px;
    right: 16px;
    width: auto;
  }
  .footer__grid { grid-template-columns: 1fr; padding: 56px 0 40px; }
  .footer__bottom-inner { padding: 20px 0 28px; }
  .accordion__panel { padding-left: 4px; }
  .v-note { display: none; }
}

/* ---------- 18. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .display { transform: none; }
}