/* ==========================================================================
   大发彩票彩讯 · 共享站点样式 /assets/site.css
   框架式导航 · 复古出版色 · 彩讯年鉴
   ========================================================================== */

/* 1. Reset ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 148px; }
body {
  margin: 0;
  background: var(--cream);
  color: var(--brown);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--gold); color: var(--ink); }

/* 2. Tokens --------------------------------------------------------------- */
:root {
  --ink: #101A2B;
  --ink-soft: #1E2C44;
  --cream: #F7F0E1;
  --cream-hi: #FFFBF2;
  --red: #C8102E;
  --gold: #C9A227;
  --jade: #2F8F83;
  --brown: #2A1C13;
  --sand: #E7DECB;
  --orange: #E4572E;

  --rule: rgba(42, 28, 19, 0.16);
  --rule-soft: rgba(42, 28, 19, 0.09);
  --rule-light: rgba(247, 240, 225, 0.14);
  --rule-gold: rgba(201, 162, 39, 0.38);

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

  --gutter: clamp(18px, 4vw, 48px);
  --max: 1180px;
  --r-organic: 22px 6px 22px 6px;
  --r-soft: 10px;
  --shadow-1: 0 8px 24px rgba(16, 26, 43, 0.10);
  --shadow-2: 0 18px 44px rgba(16, 26, 43, 0.20);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* 3. 基础版式 ------------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 800; line-height: 1.25; letter-spacing: 0.01em; color: var(--brown); }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); font-weight: 900; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); }
h4 { font-size: 1.05rem; }
p { max-width: 38em; }

a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

:focus-visible {
  outline: 3px solid var(--jade);
  outline-offset: 3px;
  border-radius: 2px;
}
.site-header :focus-visible,
.site-footer :focus-visible { outline-color: var(--gold); }

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

.shell {
  width: calc(100% - 2 * var(--gutter));
  max-width: var(--max);
  margin-inline: auto;
}

.divider { height: 1px; background: var(--rule); border: 0; margin-block: clamp(28px, 4vw, 48px); }

.skip-link {
  position: absolute;
  left: 50%;
  top: -80px;
  transform: translateX(-50%);
  z-index: 400;
  padding: 10px 20px;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  border-radius: 0 0 6px 6px;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 0; }

/* 4. 通用按钮 ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-family: var(--sans);
  font-size: 0.93rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease),
              box-shadow 0.18s var(--ease);
}
.btn--sm { padding: 9px 16px; font-size: 0.85rem; }
.btn--primary {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
  box-shadow: 3px 3px 0 rgba(201, 162, 39, 0.35);
}
.btn--primary:hover { background: var(--orange); border-color: var(--orange); transform: translate(-1px, -1px); box-shadow: 4px 4px 0 rgba(201, 162, 39, 0.45); }
.btn--primary:active { transform: translate(1px, 1px); box-shadow: 1px 1px 0 rgba(201, 162, 39, 0.4); }
.btn--ghost {
  background: transparent;
  color: var(--cream-hi);
  border-color: rgba(247, 240, 225, 0.34);
}
.btn--ghost:hover { color: var(--gold); border-color: var(--gold); background: rgba(201, 162, 39, 0.10); }
.btn--line {
  background: transparent;
  color: var(--brown);
  border-color: var(--rule);
}
.btn--line:hover { color: var(--red); border-color: var(--red); background: rgba(200, 16, 46, 0.05); }

/* 5. 页头：框架式导航 ------------------------------------------------------ */
.frame-spine {
  display: none;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 12px;
  z-index: 150;
  background-color: var(--ink);
  background-image: repeating-linear-gradient(180deg, rgba(201, 162, 39, 0.85) 0 1px, transparent 1px 26px);
  border-right: 1px solid rgba(201, 162, 39, 0.28);
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--ink);
  background-image:
    linear-gradient(115deg, rgba(30, 44, 68, 0.9) 0 42%, rgba(16, 26, 43, 1) 42% 100%),
    radial-gradient(circle at 92% -40%, rgba(200, 16, 46, 0.42), transparent 58%);
  color: var(--cream);
  border-bottom: 1px solid rgba(201, 162, 39, 0.30);
  isolation: isolate;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 14px;
  transition: padding 0.22s var(--ease);
}
.site-header[data-scrolled] .header-top { padding-block: 8px; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}
.brand-mark {
  flex: none;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  background: var(--red);
  color: var(--cream-hi);
  font-family: var(--serif);
  font-weight: 900;
  font-size: 1.32rem;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 66%, 66% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 251, 242, 0.28);
}
.brand-copy { display: block; min-width: 0; }
.brand-name {
  display: block;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
  color: var(--cream-hi);
}
.brand-sig {
  display: block;
  margin-top: 3px;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  white-space: nowrap;
}

/* 右侧工具区 */
.header-utility { display: flex; align-items: center; gap: 10px; flex: none; }
.version-chip {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.15;
  padding: 5px 11px;
  border: 1px solid var(--rule-gold);
  border-radius: 3px;
  background: rgba(201, 162, 39, 0.10);
}
.version-chip__label {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  color: rgba(247, 240, 225, 0.62);
}
.version-chip__value {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: rgba(247, 240, 225, 0.06);
  border: 1px solid rgba(247, 240, 225, 0.30);
  border-radius: 3px;
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--cream-hi);
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

/* 导航行 */
.header-nav-row { position: relative; border-top: 1px solid rgba(247, 240, 225, 0.12); }
.header-nav-inner { display: flex; align-items: center; }
.nav-label {
  flex: none;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgba(201, 162, 39, 0.82);
  padding-right: 16px;
  margin-right: 18px;
  border-right: 1px solid rgba(247, 240, 225, 0.16);
}
.site-nav { min-width: 0; }
.site-nav__list {
  display: flex;
  align-items: stretch;
  gap: clamp(4px, 1.5vw, 26px);
}
.site-nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 13px 2px 14px;
  font-size: 0.92rem;
  color: rgba(247, 240, 225, 0.76);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease);
}
.site-nav__num {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: rgba(201, 162, 39, 0.72);
  transition: color 0.18s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease);
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--cream-hi); }
.site-nav__link:hover .site-nav__num { color: var(--gold); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--cream-hi); }
.site-nav__link[aria-current="page"] .site-nav__num { color: var(--gold); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); background: var(--gold); }

/* 滚动进度条 */
.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(247, 240, 225, 0.10);
  pointer-events: none;
}
.header-progress__bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--red) 0%, var(--orange) 52%, var(--gold) 100%);
  transition: width 0.12s linear;
}

/* 小屏版本条 */
.mobile-version {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 210;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 16px;
  background: var(--ink-soft);
  border-top: 1px solid var(--rule-gold);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: rgba(247, 240, 225, 0.72);
}
.mobile-version__value { color: var(--gold); }

/* 6. 页脚：年鉴版权页 ------------------------------------------------------ */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 118px);
  background: var(--ink);
  background-image:
    radial-gradient(circle at 8% 0%, rgba(30, 44, 68, 0.95), transparent 46%),
    linear-gradient(180deg, rgba(16, 26, 43, 0) 0%, rgba(10, 17, 28, 1) 100%);
  color: rgba(247, 240, 225, 0.78);
  padding-top: 26px;
  overflow: hidden;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 2px, transparent 2px 12px);
  opacity: 0.75;
}
.site-footer::after {
  content: "";
  position: absolute;
  right: -80px;
  top: 40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid rgba(201, 162, 39, 0.16);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(28px, 5vw, 64px);
  padding-block: clamp(30px, 5vw, 52px) clamp(24px, 4vw, 40px);
  border-bottom: 1px dashed var(--rule-gold);
}
.footer-brand__line {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.6vw, 1.9rem);
  line-height: 1.35;
  color: var(--cream-hi);
  letter-spacing: 0.02em;
  max-width: 22em;
}
.footer-brand__code {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  word-break: break-all;
}
.footer-service {
  margin-top: 14px;
  max-width: 34em;
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(247, 240, 225, 0.62);
}
.footer-brand .btn { margin-top: 18px; }

.footer-contact__title {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(247, 240, 225, 0.14);
}
.footer-contact__row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 12px;
  padding-block: 7px;
  font-size: 0.9rem;
  line-height: 1.6;
  max-width: none;
}
.footer-contact__key {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: rgba(201, 162, 39, 0.85);
  padding-top: 3px;
}
.footer-contact__val { color: rgba(247, 240, 225, 0.88); word-break: break-word; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 26px clamp(24px, 4vw, 56px);
  padding-block: clamp(26px, 4vw, 40px);
}
.footer-col__title {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.footer-links li + li { margin-top: 9px; }
.footer-links a {
  display: inline-block;
  font-size: 0.93rem;
  color: rgba(247, 240, 225, 0.78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-links a:hover,
.footer-links a:focus-visible { color: var(--cream-hi); border-bottom-color: var(--red); }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 20px 30px;
  border-top: 1px solid rgba(247, 240, 225, 0.12);
}
.footer-base__meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(247, 240, 225, 0.55);
  max-width: none;
}
.footer-icp { color: rgba(201, 162, 39, 0.8); }

/* 7. 页面通用组件 --------------------------------------------------------- */
/* 面包屑 */
.breadcrumbs { padding-block: 20px 0; }
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: rgba(42, 28, 19, 0.58);
}
.breadcrumbs li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumbs li::after { content: "/"; color: rgba(42, 28, 19, 0.28); }
.breadcrumbs li:last-child::after { content: none; }
.breadcrumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.breadcrumbs a:hover { color: var(--brown); border-bottom-color: var(--red); }

/* 章节头 */
.section-head { display: grid; gap: 12px; margin-bottom: clamp(20px, 3vw, 32px); }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: currentColor; }
.section-title { font-size: clamp(1.6rem, 3.1vw, 2.4rem); }
.section-lede { max-width: 38em; color: rgba(42, 28, 19, 0.72); }
.chapter-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}

/* 长文 */
.prose { max-width: 38em; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.5em; }
.prose ul, .prose ol { padding-left: 1.35em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--red); }
.prose strong { color: var(--brown); font-weight: 700; }

/* 栅格 */
.grid { display: grid; gap: clamp(18px, 2.6vw, 30px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

/* 卡片 */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--cream-hi);
  border: 1px solid var(--rule);
  border-radius: var(--r-organic);
  overflow: hidden;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: var(--red);
  transform: scaleX(0.28);
  transform-origin: left center;
  transition: transform 0.28s var(--ease), background-color 0.28s var(--ease);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-1); }
.card:hover::before { transform: scaleX(1); background: var(--orange); }
.card__eyebrow {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--jade);
}
.card__title { font-family: var(--serif); font-weight: 800; font-size: 1.16rem; line-height: 1.4; color: var(--brown); }
.card__body { font-size: 0.94rem; color: rgba(42, 28, 19, 0.76); }
.card__meta {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: rgba(42, 28, 19, 0.55);
}
.card--ink {
  background: var(--ink-soft);
  border-color: rgba(201, 162, 39, 0.34);
  color: rgba(247, 240, 225, 0.82);
}
.card--ink .card__title { color: var(--cream-hi); }
.card--ink .card__body { color: rgba(247, 240, 225, 0.76); }
.card--ink .card__eyebrow { color: var(--gold); }
.card--ink .card__meta { color: rgba(247, 240, 225, 0.6); border-top-color: rgba(247, 240, 225, 0.16); }

/* 标签与筛选 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid rgba(47, 143, 131, 0.45);
  border-radius: 999px;
  background: rgba(47, 143, 131, 0.08);
  color: #246e65;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.tag:hover { background: var(--orange); border-color: var(--orange); color: #fff; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: clamp(20px, 3vw, 30px); }
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: transparent;
  color: rgba(42, 28, 19, 0.78);
  font-family: var(--sans);
  font-size: 0.86rem;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease),
              border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.filter-btn::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(42, 28, 19, 0.28);
  transition: background-color 0.18s var(--ease);
}
.filter-btn:hover { border-color: var(--orange); color: var(--brown); transform: translateY(-2px); }
.filter-btn[aria-pressed="true"] {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
}
.filter-btn[aria-pressed="true"]::before { background: var(--gold); }

.empty-state {
  margin-top: 12px;
  padding: 22px;
  border: 1px dashed var(--rule);
  border-radius: var(--r-soft);
  background: rgba(231, 222, 203, 0.42);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: rgba(42, 28, 19, 0.62);
  text-align: center;
}

/* 图片容器基础规则 */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(201, 162, 39, 0.32);
  border-radius: var(--r-organic);
  background-color: var(--ink-soft);
  background-image:
    linear-gradient(135deg, rgba(200, 16, 46, 0.22) 0%, transparent 54%),
    repeating-linear-gradient(90deg, rgba(201, 162, 39, 0.16) 0 1px, transparent 1px 11px),
    linear-gradient(160deg, #1E2C44 0%, #101A2B 100%);
  aspect-ratio: 16 / 10;
}
.media-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 10px 16px;
  background: linear-gradient(0deg, rgba(16, 26, 43, 0.92), rgba(16, 26, 43, 0));
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: rgba(247, 240, 225, 0.82);
}

/* 提示块 / 数字 / 箭头链接 */
.notice {
  padding: clamp(16px, 2.4vw, 22px);
  border-left: 3px solid var(--jade);
  border-radius: 0 var(--r-soft) var(--r-soft) 0;
  background: rgba(47, 143, 131, 0.08);
  color: rgba(42, 28, 19, 0.82);
  font-size: 0.92rem;
}
.stat {
  font-family: var(--mono);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--gold);
}
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 16, 46, 0.35);
  padding-bottom: 2px;
  transition: gap 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.link-arrow::after { content: "→"; }
.link-arrow:hover { gap: 14px; color: var(--orange); border-bottom-color: var(--orange); }

/* 深底主题区 */
.on-ink {
  background-color: var(--ink);
  background-image: linear-gradient(135deg, rgba(30, 44, 68, 0.9) 0 46%, rgba(16, 26, 43, 1) 46% 100%);
  color: rgba(247, 240, 225, 0.82);
}
.on-ink h1, .on-ink h2, .on-ink h3, .on-ink h4 { color: var(--cream-hi); }
.on-ink .section-lede { color: rgba(247, 240, 225, 0.72); }
.on-ink .eyebrow { color: var(--gold); }
.on-ink .prose a { color: var(--gold); }

/* 8. 递进显现 ------------------------------------------------------------- */
html[data-js="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
html[data-js="on"] [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* 9. 响应式 --------------------------------------------------------------- */
@media (min-width: 1240px) {
  .frame-spine { display: block; }
  body { padding-left: 12px; }
  .site-header, .site-footer { padding-left: 0; }
}

@media (max-width: 1024px) {
  .nav-label { display: none; }
  .site-nav__list { gap: 2px; }
  .site-nav__link { padding-inline: 8px; font-size: 0.88rem; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .header-cta { display: none; }
  .header-top { padding-block: 12px; }
  .site-header[data-scrolled] .header-top { padding-block: 8px; }
  .header-nav-row { border-top: 0; }
  .header-nav-inner { padding-block: 0; }
  .site-nav { display: none; }
  .site-nav[data-open] {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 300;
    background: var(--ink-soft);
    border-top: 1px solid var(--rule-gold);
    box-shadow: var(--shadow-2);
    max-height: calc(100vh - 90px);
    overflow-y: auto;
    padding: 6px 0 18px;
  }
  .site-nav[data-open] .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav[data-open] .site-nav__link {
    padding: 15px 22px;
    gap: 14px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(247, 240, 225, 0.10);
  }
  .site-nav[data-open] .site-nav__num { font-size: 0.72rem; color: rgba(201, 162, 39, 0.85); }
  .site-nav[data-open] .site-nav__link::after {
    top: 0; bottom: 0; left: 0; right: auto;
    width: 3px; height: auto;
    transform: scaleY(0);
    transform-origin: top center;
  }
  .site-nav[data-open] .site-nav__link[aria-current="page"]::after { transform: scaleY(1); background: var(--red); }
  .site-nav[data-open] .site-nav__link[aria-current="page"] { background: rgba(200, 16, 46, 0.10); }

  .footer-top { grid-template-columns: minmax(0, 1fr); }
  .footer-contact__row { grid-template-columns: 42px minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .version-chip { display: none; }
  .brand-mark { width: 38px; height: 38px; font-size: 1.16rem; }
  .brand-name { font-size: 1.04rem; }
  .brand-sig { letter-spacing: 0.14em; font-size: 0.58rem; }
  html { scroll-padding-top: 96px; }
}

@media (max-width: 640px) {
  .mobile-version { display: flex; }
  .site-footer { padding-bottom: 56px; }
  .footer-base { padding-bottom: 24px; }
  .footer-base__meta { font-size: 0.66rem; letter-spacing: 0.05em; }
  p { max-width: none; }
}

@media (max-width: 420px) {
  .header-utility { gap: 8px; }
  .btn--sm { padding: 8px 12px; font-size: 0.8rem; }
  .brand-sig { display: none; }
}

@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;
    scroll-behavior: auto !important;
  }
  .card:hover { transform: none; }
  .filter-btn:hover { transform: none; }
  .btn--primary:hover { transform: none; }
  html[data-js="on"] [data-reveal] { opacity: 1; transform: none; }
  .header-progress__bar { transition: none; }
}

@media print {
  .site-header, .site-footer, .frame-spine, .mobile-version, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
}