/* ===== /assets/site.css — 百老汇牛牛 全站共享样式 ===== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 116px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(15px, 0.55vw + 13px, 17px);
  line-height: 1.78;
  letter-spacing: 0.012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0; padding: 0; }

a { color: var(--crimson); }

button { font: inherit; color: inherit; }

/* --- tokens --- */
:root {
  --paper: #F7F2E8;
  --ink: #16161C;
  --crimson: #8E1B2A;
  --vermilion: #D2453C;
  --gold: #C8A02C;
  --midnight: #101A33;
  --neon: #3EE0CE;
  --edge: #D9D2C2;
  --ink-2: #5B5560;
  --green: #2E7D5B;

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1240px;
  --gut: clamp(18px, 4.4vw, 56px);
  --gap: clamp(16px, 2.2vw, 28px);
  --space-sec: clamp(72px, 10vw, 140px);

  --shadow-1: 0 1px 0 rgba(22, 22, 28, 0.035), 0 10px 26px -20px rgba(16, 26, 51, 0.5);
  --shadow-2: 0 2px 0 rgba(22, 22, 28, 0.03), 0 24px 44px -28px rgba(16, 26, 51, 0.58);
}

/* --- focus --- */
:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* --- layout utilities --- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--gut);
  padding-right: var(--gut);
}

.container--narrow { max-width: 880px; }

.stack > * + * { margin-top: var(--stack-gap, 16px); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 3fr);
  gap: clamp(20px, 3vw, 52px);
  align-items: start;
}

.grid {
  display: grid;
  gap: var(--gap);
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(216px, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }

.rule-line {
  height: 1px;
  border: 0;
  margin: clamp(28px, 4vw, 56px) 0;
  background: var(--edge);
}

.gold-line {
  height: 1px;
  border: 0;
  margin: clamp(24px, 3.4vw, 44px) 0;
  background: linear-gradient(90deg, var(--gold), rgba(200, 160, 44, 0));
}

/* --- typography helpers --- */
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--crimson);
  margin-bottom: 12px;
}

.lede {
  font-size: clamp(16px, 0.9vw + 13px, 19px);
  line-height: 1.82;
  color: var(--ink-2);
  max-width: 62ch;
}

.sec-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--gold);
}

.sec-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.side-note {
  position: sticky;
  top: 124px;
}

.side-note .vertical {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.3em;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
}

/* --- buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease,
    border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--crimson);
  color: var(--paper);
  box-shadow: 0 14px 26px -20px rgba(142, 27, 42, 0.95);
}
.btn--primary:hover { background: var(--vermilion); transform: translateY(-2px); }

.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: #000; transform: translateY(-2px); }

.btn--ghost {
  background: transparent;
  border-color: var(--edge);
  color: var(--ink);
}
.btn--ghost:hover { border-color: var(--gold); transform: translateY(-2px); }

.btn--neon {
  background: var(--midnight);
  color: var(--neon);
  border-color: var(--neon);
}
.btn--neon:hover { background: #16224a; transform: translateY(-2px); }

/* --- breadcrumbs --- */
.breadcrumbs {
  padding: clamp(18px, 2.4vw, 30px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
}
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; color: var(--gold); }
.breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.breadcrumbs a:hover { color: var(--crimson); border-color: var(--crimson); }

/* --- cards --- */
.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  padding: clamp(20px, 2.4vw, 32px);
  box-shadow: var(--shadow-1);
  transition: transform 0.26s ease, border-color 0.26s ease, box-shadow 0.26s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: var(--shadow-2);
}

.card--tilt { transform: rotate(-1.5deg); }
.card--tilt:hover,
.card--tilt:focus-within { transform: rotate(0deg) translateY(-2px); }

.card--dark {
  background: var(--midnight);
  border-color: rgba(62, 224, 206, 0.32);
  color: rgba(247, 242, 232, 0.86);
}

.card-title {
  margin: 0 0 0.5em;
  font-size: clamp(18px, 1.2vw + 14px, 22px);
  font-weight: 900;
  color: var(--ink);
}
.card--dark .card-title { color: var(--paper); }

/* --- figure frames (图片占位容器) --- */
.figure-frame {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  background: linear-gradient(140deg, #efe7d7 0%, #f7f2e8 52%, #e6ddc9 100%);
  aspect-ratio: 4 / 3;
}

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

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

.figure-frame--glow { box-shadow: 0 26px 48px -34px rgba(16, 26, 51, 0.75); }

.figure-frame--tilt {
  transform: rotate(-1.5deg);
  transition: transform 0.32s ease;
}
.figure-frame--tilt:hover { transform: rotate(0deg); }

.figure-frame[data-empty="true"]::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 46%, rgba(62, 224, 206, 0.18), transparent 62%),
    repeating-linear-gradient(45deg, rgba(200, 160, 44, 0.16) 0 1px, transparent 1px 11px);
}

.figure-frame figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 22px 18px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 242, 232, 0.88);
  background: linear-gradient(to top, rgba(16, 26, 51, 0.82), rgba(16, 26, 51, 0));
}

/* --- details 折叠面板 --- */
.rule-fold {
  border: 1px solid var(--edge);
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: hidden;
  transition: border-color 0.24s ease, box-shadow 0.24s ease;
}
.rule-fold + .rule-fold { margin-top: 12px; }
.rule-fold:hover { border-color: var(--gold); }

.rule-fold summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-weight: 700;
}
.rule-fold summary::-webkit-details-marker { display: none; }

.rule-fold summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px; height: 8px;
  border-right: 1.5px solid var(--crimson);
  border-bottom: 1.5px solid var(--crimson);
  transform: rotate(-45deg);
  transition: transform 0.25s ease;
}
.rule-fold[open] summary::after { transform: rotate(45deg); }

/* --- skip link --- */
.skip-link {
  position: absolute;
  left: 14px;
  top: -72px;
  z-index: 200;
  padding: 11px 20px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 0 0 12px 12px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(247, 242, 232, 0.93);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-header::before,
.site-header::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--gold);
  opacity: 0.3;
  pointer-events: none;
}
.site-header::before { left: 0; }
.site-header::after { right: 0; }

.header-rule {
  height: 3px;
  background: linear-gradient(90deg,
    var(--crimson) 0 20%,
    var(--gold) 20% 36%,
    var(--edge) 36% 100%);
  transition: height 0.35s ease, background 0.35s ease;
}
.site-header[data-scrolled="true"] .header-rule {
  height: 1px;
  background: linear-gradient(90deg, var(--gold) 0 34%, var(--edge) 34% 100%);
}

.header-frame {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(12px, 2vw, 34px);
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(13px, 1.4vw, 21px) var(--gut);
  transition: padding 0.3s ease;
}
.site-header[data-scrolled="true"] .header-frame {
  padding-top: 8px;
  padding-bottom: 8px;
}

/* brand */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.brand-badge {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--crimson);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  clip-path: polygon(50% 0%, 90% 21%, 100% 62%, 76% 100%, 24% 100%, 0% 62%, 10% 21%);
  transition: transform 0.3s ease, background-color 0.3s ease;
}
.brand:hover .brand-badge { transform: rotate(-8deg) scale(1.06); }

.brand-wordmark {
  writing-mode: vertical-rl;
  text-orientation: upright;
  height: 52px;
  font-size: 13px;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.04em;
  color: var(--ink);
}

/* primary nav (desktop) */
.nav-primary { justify-self: center; }

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1.2vw, 20px);
  list-style: none;
}

.nav-link {
  position: relative;
  display: block;
  padding: 9px 4px;
  font-size: clamp(14px, 0.5vw + 12px, 15px);
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.22s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 4px; right: 4px; bottom: 3px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.24s ease;
}

.nav-link:hover { color: var(--crimson); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--crimson); }
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--vermilion);
}

/* drawer chrome — desktop off */
.drawer-head,
.drawer-foot { display: none; }

.drawer-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--neon);
}

.drawer-close {
  padding: 7px 15px;
  background: transparent;
  border: 1px solid rgba(62, 224, 206, 0.5);
  border-radius: 999px;
  color: var(--neon);
  font-size: 12px;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.drawer-close:hover { background: rgba(62, 224, 206, 0.12); border-color: var(--neon); }

.drawer-foot {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 242, 232, 0.6);
}

/* header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cta-v4 {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 17px;
  background: var(--midnight);
  color: var(--neon);
  border: 1px solid var(--neon);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 12px 28px -22px rgba(62, 224, 206, 0.9);
  animation: v4-in 1.1s ease-out 1 both;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}
.cta-v4:hover {
  background: #16224a;
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px rgba(62, 224, 206, 0.18), 0 16px 32px -20px rgba(62, 224, 206, 0.95);
}

.cta-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
  animation: dot-pulse 2.6s ease-in-out infinite;
}

@keyframes v4-in {
  from { box-shadow: 0 0 0 14px rgba(62, 224, 206, 0.26); opacity: 0.4; }
  to { box-shadow: 0 0 0 0 rgba(62, 224, 206, 0); opacity: 1; }
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.42; transform: scale(0.78); }
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--edge);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.nav-toggle:hover { border-color: var(--gold); }

.nav-toggle .bars {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
}
.nav-toggle .bars::before,
.nav-toggle .bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
}
.nav-toggle .bars::before { top: -6px; }
.nav-toggle .bars::after { top: 6px; }

/* scroll progress */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--neon), var(--gold));
  opacity: 0;
  transition: opacity 0.3s ease, width 0.1s linear;
}
.site-header[data-scrolled="true"] .scroll-progress { opacity: 1; }

/* scrim */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(16, 26, 51, 0.58);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.nav-scrim[data-open="true"] { opacity: 1; pointer-events: auto; }

/* ===== FOOTER ===== */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: var(--space-sec);
  padding: clamp(48px, 7vw, 86px) 0 0;
  background: var(--midnight);
  color: rgba(247, 242, 232, 0.82);
  border-top: 1px solid rgba(200, 160, 44, 0.55);
}

.site-footer::before {
  content: "";
  position: absolute;
  right: -130px;
  top: -130px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(62, 224, 206, 0.2);
  border-radius: 50%;
  pointer-events: none;
}
.site-footer::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(200, 160, 44, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: clamp(26px, 3.4vw, 54px);
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-mark {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: var(--midnight);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  clip-path: polygon(50% 0%, 90% 21%, 100% 62%, 76% 100%, 24% 100%, 0% 62%, 10% 21%);
}

.footer-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.footer-claim {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 242, 232, 0.8);
  max-width: 22ch;
}

.footer-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: rgba(247, 242, 232, 0.5);
}

.footer-heading {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-links { list-style: none; }
.footer-links li + li { margin-top: 9px; }

.footer-link {
  color: rgba(247, 242, 232, 0.82);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer-link:hover { color: var(--neon); border-color: rgba(62, 224, 206, 0.5); }

.footer-contact { list-style: none; }
.footer-contact li + li { margin-top: 12px; }

.contact-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(247, 242, 232, 0.48);
}

.contact-val {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(247, 242, 232, 0.88);
  word-break: break-word;
}

.footer-base {
  position: relative;
  z-index: 1;
  margin-top: clamp(40px, 5vw, 70px);
  border-top: 1px solid rgba(247, 242, 232, 0.12);
}

.footer-base-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  justify-content: space-between;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px var(--gut) 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(247, 242, 232, 0.55);
}

/* ===== DOCK NAV ===== */
.dock-nav {
  position: fixed;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 55;
  display: none;
  align-items: center;
  gap: 2px;
  padding: 6px;
  background: rgba(16, 26, 51, 0.95);
  border: 1px solid rgba(62, 224, 206, 0.45);
  border-radius: 999px;
  box-shadow: 0 18px 36px -20px rgba(16, 26, 51, 0.95);
}

.dock-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: rgba(247, 242, 232, 0.78);
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.dock-link:hover { color: var(--neon); background: rgba(62, 224, 206, 0.1); }
.dock-link[aria-current="page"] {
  background: var(--neon);
  color: var(--midnight);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .header-frame { grid-template-columns: 1fr auto; }

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

  .nav-primary {
    position: fixed;
    inset: 0 0 0 auto;
    z-index: 80;
    width: min(340px, 88vw);
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 22px 24px 34px;
    background: var(--midnight);
    background-image: radial-gradient(circle at 100% 0%, rgba(62, 224, 206, 0.16), transparent 60%);
    border-left: 1px solid rgba(62, 224, 206, 0.4);
    color: var(--paper);
    overflow-y: auto;
    visibility: hidden;
    transform: translateX(102%);
    transition: transform 0.34s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.34s;
  }

  .nav-primary[data-open="true"] {
    visibility: visible;
    transform: translateX(0);
    transition: transform 0.34s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s;
  }

  .drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(247, 242, 232, 0.14);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    list-style: none;
  }

  .nav-link {
    position: relative;
    padding: 15px 0 15px 0;
    font-size: 19px;
    font-weight: 900;
    letter-spacing: 0.04em;
    color: var(--paper);
    border-bottom: 1px solid rgba(247, 242, 232, 0.1);
  }
  .nav-link::after { display: none; }
  .nav-link:hover { color: var(--neon); }

  .nav-link[aria-current="page"] {
    color: var(--neon);
    padding-left: 16px;
  }
  .nav-link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--neon);
    box-shadow: 0 0 10px var(--neon);
  }

  .drawer-foot {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid rgba(247, 242, 232, 0.12);
  }

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

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

  body { padding-bottom: 84px; }
}

@media (max-width: 720px) {
  .split {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }
  .side-note { position: static; }
  .grid--split { grid-template-columns: minmax(0, 1fr); }

  .cta-v4 { padding: 8px 13px; font-size: 12px; letter-spacing: 0.08em; }
  .brand-wordmark { height: 46px; font-size: 12px; }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .brand-badge { width: 34px; height: 34px; font-size: 13px; }
  .footer-base-inner { flex-direction: column; gap: 6px; }
}

/* ===== 无障碍与降级 ===== */
@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;
  }
  .card--tilt,
  .figure-frame--tilt { transform: none; }
}