/* ============================================================
   优发国际址主页 · /assets/site.css
   共享外壳：reset / tokens / 排版 / 页头 / 页脚 / 基础组件
   ============================================================ */

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

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

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

:root {
  --ink-900: #071225;
  --ink-800: #0A1B33;
  --ink-700: #102A4C;
  --cyan: #35E0FF;
  --coral: #FF7A59;
  --paper: #F7F5EF;
  --mist: #E9F2F7;
  --warm: #B7B0A5;
  --mint: #6EE7C8;
  --slate: #5E738C;

  --shell: 1240px;
  --gutter: clamp(18px, 4vw, 48px);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --line: rgba(183, 176, 165, .22);
  --line-cyan: rgba(53, 224, 255, .22);
  --shadow-card: 0 24px 48px -32px rgba(0, 0, 0, .95);

  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(120% 80% at 85% 0%, rgba(53, 224, 255, .07), transparent 55%),
    var(--ink-800);
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: clamp(15.5px, .35vw + 14.6px, 17px);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .01em;
  overflow-x: hidden;
}

::selection { background: var(--cyan); color: var(--ink-900); }

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

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
}

/* ---------------- 跳转链接 ---------------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--coral);
  color: #1A0B06;
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .06em;
  transform: translateY(-180%);
  transition: transform .2s var(--ease);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}
.skip-link:focus { transform: translateY(0); }

/* ---------------- 页头 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(7, 18, 37, .96);
  border-bottom: 1px solid var(--line-cyan);
  backdrop-filter: blur(10px);
}

.header-rail {
  background: rgba(7, 18, 37, .92);
  border-bottom: 1px solid rgba(183, 176, 165, .16);
}
.header-rail__inner {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: .75rem;
  color: var(--warm);
}
.rail-edition {
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: .06em;
}
.rail-edition .mono {
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--cyan);
}
.rail-edition__divider {
  width: 1px;
  height: 12px;
  background: rgba(183, 176, 165, .4);
  transform: skewX(-12deg);
}
.rail-batch {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: .08em;
}
.rail-batch__num {
  font-size: .72rem;
  color: var(--paper);
  padding: 1px 8px;
  border: 1px solid rgba(255, 122, 89, .5);
  color: var(--coral);
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}
.quick-links {
  display: flex;
  align-items: center;
  gap: 14px;
}
.quick-links__item {
  position: relative;
  padding: 2px 0;
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--mist);
  transition: color .18s var(--ease);
}
.quick-links__item::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .22s var(--ease);
}
.quick-links__item:hover,
.quick-links__item:focus-visible { color: var(--cyan); }
.quick-links__item:hover::after,
.quick-links__item:focus-visible::after { transform: scaleX(1); }
.quick-links__item--accent {
  color: var(--coral);
  padding-left: 12px;
}
.quick-links__item--accent::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--coral);
  transform: translateY(-50%) skewX(-18deg);
}
.quick-links__item--accent::after { background: var(--coral); }
.quick-links__item--accent:hover,
.quick-links__item--accent:focus-visible { color: #FFA48C; }

/* 刊头 */
.masthead {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(90% 140% at 50% -30%, rgba(53, 224, 255, .16), transparent 62%),
    linear-gradient(120deg, var(--ink-900), var(--ink-800) 55%, #08182e);
}
.masthead::before {
  content: "";
  position: absolute;
  top: -60%;
  left: 24%;
  width: 44%;
  height: 220%;
  background: linear-gradient(180deg, rgba(53, 224, 255, .18), rgba(53, 224, 255, 0) 62%);
  transform: skewX(-16deg);
  pointer-events: none;
}
.masthead::after {
  content: "";
  position: absolute;
  right: 7%;
  bottom: -40%;
  width: 18%;
  height: 180%;
  background: linear-gradient(180deg, rgba(255, 122, 89, .22), rgba(255, 122, 89, 0) 72%);
  transform: skewX(14deg);
  pointer-events: none;
}
.masthead__inner {
  position: relative;
  z-index: 1;
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding: clamp(16px, 2.6vw, 26px) var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  transition: padding .25s var(--ease);
}
.masthead__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(233, 242, 247, .05) 1px, transparent 1px);
  background-size: clamp(44px, 7vw, 92px) 100%;
  opacity: .55;
  pointer-events: none;
}
.masthead__side {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .2em;
  color: var(--slate);
}
.masthead__side:first-child { justify-self: start; }
.masthead__side:last-child { justify-self: end; }
.masthead__rule {
  width: clamp(20px, 4vw, 64px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan));
}
.masthead__side-text { white-space: nowrap; }

.masthead__center {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 0;
}
.masthead__kicker {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .42em;
  color: var(--warm);
  text-transform: uppercase;
  padding-left: .42em;
}

.brand {
  display: inline-grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  align-items: center;
}
.brand__mark {
  grid-row: 1 / span 2;
  width: 11px;
  min-height: 38px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--coral));
  transform: skewX(-16deg);
  transition: min-height .2s var(--ease);
}
.brand__name {
  grid-column: 2;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.2vw, 2.55rem);
  line-height: 1.16;
  letter-spacing: .1em;
  color: var(--paper);
  transition: font-size .2s var(--ease);
}
.brand__sub {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .3em;
  color: var(--slate);
  text-transform: uppercase;
}
.brand:hover .brand__name { color: var(--cyan); }
.brand:focus-visible { outline-offset: 6px; }

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 122, 89, .5);
  color: var(--coral);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}
.stamp__label {
  font-family: var(--font-sans);
  font-size: .62rem;
  letter-spacing: .18em;
}
.stamp__value {
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--paper);
}

.scroll-meter {
  position: relative;
  height: 2px;
  background: rgba(233, 242, 247, .08);
  overflow: hidden;
}
.scroll-meter__fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
  transform: scaleX(0);
  transform-origin: left center;
}

/* 栏目条 */
.nav-bar {
  position: relative;
  background: rgba(7, 18, 37, .94);
  border-top: 1px solid rgba(233, 242, 247, .08);
  border-bottom: 1px solid var(--line-cyan);
}
.nav-bar__inner {
  position: relative;
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.primary-nav { display: flex; justify-content: center; }
.primary-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(2px, 1.5vw, 16px);
}
.primary-nav__item { display: block; }
.primary-nav__link {
  position: relative;
  display: block;
  padding: 12px 12px;
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--mist);
  transition: color .18s var(--ease);
}
.primary-nav__link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .24s var(--ease);
}
.primary-nav__link:hover,
.primary-nav__link:focus-visible { color: var(--paper); }
.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after { transform: scaleX(1); }
.primary-nav__link[aria-current="page"] { color: var(--cyan); }
.primary-nav__link[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid rgba(53, 224, 255, .42);
  color: var(--cyan);
  font-size: .82rem;
  letter-spacing: .2em;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
}
.nav-toggle__icon {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s var(--ease), top .2s var(--ease), bottom .2s var(--ease);
}
.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { top: 4px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { bottom: 4px; transform: rotate(-45deg); }

/* 页头压缩态 */
.site-header[data-compact] .header-rail { display: none; }
.site-header[data-compact] .masthead__inner {
  padding-block: 7px;
  grid-template-columns: 1fr;
  gap: 0;
}
.site-header[data-compact] .masthead__side,
.site-header[data-compact] .masthead__kicker,
.site-header[data-compact] .brand__sub { display: none; }
.site-header[data-compact] .brand__name { font-size: 1.3rem; letter-spacing: .08em; }
.site-header[data-compact] .brand__mark { min-height: 22px; width: 8px; }

/* ---------------- 页脚 ---------------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(53, 224, 255, .1), transparent 58%),
    var(--ink-900);
  border-top: 1px solid var(--line-cyan);
}
.footer-beam {
  height: 6px;
  background: linear-gradient(90deg, var(--coral), var(--cyan) 48%, rgba(53, 224, 255, 0) 92%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 56px) 100%, 0 100%);
}
.footer__inner {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) var(--gutter) 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, .8fr)) minmax(0, 1.1fr);
  gap: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(32px, 5vw, 56px);
}
.footer-brand { min-width: 0; }
.footer-brand__name {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--paper);
}
.footer-brand__name::before {
  content: "";
  width: 9px;
  height: .95em;
  margin-right: 12px;
  background: linear-gradient(180deg, var(--cyan), var(--coral));
  transform: skewX(-18deg);
}
.footer-brand__name:hover { color: var(--cyan); }
.footer-brand__tag {
  margin-top: 14px;
  max-width: 30ch;
  font-size: .88rem;
  line-height: 1.8;
  color: rgba(233, 242, 247, .72);
}
.footer-brand__meta {
  margin-top: 16px;
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--slate);
}
.footer-col { min-width: 0; }
.footer-col__title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-family: var(--font-sans);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--cyan);
}
.footer-col__title::before {
  content: "";
  width: 14px;
  height: 3px;
  background: var(--coral);
  transform: skewX(-22deg);
}
.footer-list { display: grid; gap: 9px; }
.footer-list__link {
  position: relative;
  display: inline-block;
  font-size: .88rem;
  color: var(--warm);
  transition: color .18s var(--ease), transform .18s var(--ease);
}
.footer-list__link:hover,
.footer-list__link:focus-visible {
  color: var(--paper);
  transform: translateX(3px);
}
.footer-list--contact { gap: 14px; }
.footer-contact { display: grid; gap: 2px; }
.footer-contact__label {
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .18em;
  color: var(--slate);
}
.footer-contact__value {
  font-size: .88rem;
  color: var(--mist);
  overflow-wrap: anywhere;
}
.footer-bottom {
  border-top: 1px solid rgba(183, 176, 165, .18);
  padding-block: 18px 22px;
}
.footer-bottom__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  color: var(--warm);
}
.footer-legal__link { transition: color .18s var(--ease); }
.footer-legal__link:hover,
.footer-legal__link:focus-visible { color: var(--cyan); }
.footer-legal__sep { color: var(--slate); }
.footer-meta {
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--slate);
}

/* ---------------- 通用布局与组件 ---------------- */
.container {
  width: min(100%, var(--shell));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(44px, 7vw, 96px); }
.section--tight { padding-block: clamp(26px, 4vw, 56px); }

.section__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  margin-bottom: clamp(24px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}
.section__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: clamp(48px, 10vw, 120px);
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--coral));
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 18px;
  height: 6px;
  background: var(--coral);
  transform: skewX(-22deg);
}

.display-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 6.4vw, 5.4rem);
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--paper);
  text-wrap: balance;
}

.section-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.45rem, 2.8vw, 2.2rem);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
}

.lede {
  max-width: 52ch;
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.85;
  color: rgba(233, 242, 247, .8);
}

.grid { display: grid; gap: clamp(20px, 3vw, 32px); }
.grid--split {
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  align-items: start;
}

.divider-slash {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, rgba(53, 224, 255, .7) 32%, rgba(255, 122, 89, .7) 68%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  font-size: .94rem;
  font-weight: 600;
  letter-spacing: .05em;
  border: 1px solid transparent;
  border-radius: 2px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: transform .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline-offset: -4px; }
.btn--accent { background: var(--coral); color: #1A0B06; }
.btn--accent:hover { background: #FF9275; }
.btn--ghost {
  border-color: rgba(53, 224, 255, .55);
  background: rgba(53, 224, 255, .04);
  color: var(--cyan);
}
.btn--ghost:hover {
  background: rgba(53, 224, 255, .14);
  color: var(--paper);
}

.panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  background: linear-gradient(150deg, rgba(16, 42, 76, .92), rgba(10, 27, 51, .92));
  border: 1px solid var(--line-cyan);
}
.panel--cut {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}
.panel__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--coral);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--mist);
  background: rgba(233, 242, 247, .06);
  border: 1px solid rgba(183, 176, 165, .35);
  border-radius: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}
.tag:hover,
.tag:focus-visible {
  color: var(--cyan);
  border-color: rgba(53, 224, 255, .7);
  background: rgba(53, 224, 255, .1);
}

.stat-card {
  position: relative;
  padding: 18px 22px;
  background: linear-gradient(155deg, rgba(16, 42, 76, .96), rgba(10, 27, 51, .96));
  border: 1px solid var(--line-cyan);
  border-left: 3px solid var(--cyan);
  box-shadow: var(--shadow-card);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.stat-card__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.stat-card__label {
  display: block;
  margin-top: 6px;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--warm);
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(135deg, var(--ink-700), var(--ink-800) 55%, var(--ink-900));
  border: 1px solid var(--line-cyan);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(53, 224, 255, .16) 48%, rgba(255, 122, 89, .14) 54%, transparent 64%);
  pointer-events: none;
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(7, 18, 37, .92));
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--slate);
}
.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumbs__link { color: var(--warm); transition: color .18s var(--ease); }
.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible { color: var(--cyan); }
.breadcrumbs__sep { color: var(--slate); transform: skewX(-14deg); }
.breadcrumbs__current { color: var(--mist); }

.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  color: var(--mist);
}
.prose > * + * { margin-top: 1.1em; }
.prose h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  line-height: 1.35;
  color: var(--paper);
  margin-top: 1.8em;
}
.prose h3 {
  font-size: 1.14rem;
  line-height: 1.5;
  color: var(--paper);
  margin-top: 1.5em;
}
.prose a {
  color: var(--cyan);
  border-bottom: 1px solid rgba(53, 224, 255, .45);
}
.prose a:hover { border-bottom-color: var(--cyan); }
.prose strong { color: var(--paper); font-weight: 700; }
.prose ul { padding-left: 1.1em; }
.prose ul li {
  position: relative;
  padding-left: .9em;
}
.prose ul li + li { margin-top: .45em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 6px;
  height: 6px;
  background: var(--coral);
  transform: skewX(-18deg);
}
.prose blockquote {
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--cyan);
  color: rgba(233, 242, 247, .82);
}

/* 渐显协议 */
.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .masthead__side-text { display: none; }
  .masthead__side:first-child { gap: 0; }
  .footer-grid {
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  }
  .footer-col--contact { grid-column: 1 / -1; }
  .footer-list--contact {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px 24px;
  }
}

@media (max-width: 900px) {
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  .header-rail__inner { gap: 12px; min-height: 34px; }
  .rail-edition { display: none; }
  .rail-batch { margin-left: 0; }
  .quick-links { margin-left: auto; gap: 12px; }
  .masthead__inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding-block: 12px;
  }
  .masthead__side { display: none; }
  .masthead__kicker { font-size: .58rem; letter-spacing: .34em; }
  .brand { column-gap: 11px; }
  .brand__name { font-size: clamp(1.35rem, 5.6vw, 1.9rem); }
  .brand__sub { font-size: .54rem; letter-spacing: .22em; }

  .nav-bar__inner {
    justify-content: flex-start;
    min-height: 54px;
  }
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    left: var(--gutter);
    right: var(--gutter);
    display: block;
    padding: 8px;
    background: var(--ink-700);
    border: 1px solid rgba(53, 224, 255, .3);
    box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .95);
    clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
  }
  .primary-nav[data-open] {
    visibility: visible;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .primary-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .primary-nav__link {
    padding: 12px 14px;
    border-left: 2px solid transparent;
    font-size: .95rem;
  }
  .primary-nav__link::after { display: none; }
  .primary-nav__link:hover,
  .primary-nav__link:focus-visible,
  .primary-nav__link[aria-current="page"] {
    background: rgba(53, 224, 255, .1);
    border-left-color: var(--cyan);
    color: var(--paper);
  }
  .primary-nav__link[aria-current="page"] { color: var(--cyan); }
}

@media (max-width: 640px) {
  .rail-batch { font-size: .7rem; }
  .quick-links { gap: 10px; }
  .quick-links__item { font-size: .7rem; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-col--contact { grid-column: auto; }
  .footer-bottom__inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { letter-spacing: .06em; }
}

@media (max-width: 420px) {
  .rail-batch { display: none; }
  .quick-links { margin-left: 0; width: 100%; justify-content: space-between; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}