/* ============================================================
   江南体育 · 共享站点样式 /assets/site.css
   数字水墨 + 竞技信号：宣纸底、黛青阅读层、荧光与炽橙点色
   ============================================================ */

:root {
  --paper: #F5EFE4;
  --ink: #151515;
  --dai: #1E3A44;
  --smoke: #8B9498;
  --mint: #3DF0C0;
  --flame: #FF5B2E;
  --brown: #2B211C;
  --mist: #CBD9D7;
  --copper: #B08A52;
  --rust: #B23A18;
  --muted: #5D6A6D;
  --line: rgba(21, 21, 21, 0.14);
  --line-dai: rgba(30, 58, 68, 0.16);
  --line-light: rgba(245, 239, 228, 0.18);
  --font-display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, "Times New Roman", serif;
  --font-body: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --wrap: 1220px;
  --gutter: clamp(16px, 4vw, 48px);
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(30, 58, 68, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 68, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.005em;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.8rem, 7vw, 7rem); line-height: 0.98; }
h2 { font-size: clamp(1.8rem, 3.4vw, 3.2rem); }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.6rem); }

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

a { color: var(--rust); text-underline-offset: 0.22em; }
a:hover { color: var(--flame); }

ul, ol { margin: 0 0 1em; padding-left: 1.25em; }

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

button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--flame);
  outline-offset: 3px;
  border-radius: 1px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 12px;
  z-index: 300;
  background: var(--ink);
  color: var(--paper);
  padding: 0.7em 1.15em;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 2px;
  transition: top 0.2s var(--ease);
}
.skip-link:focus {
  top: 12px;
  color: var(--paper);
}

/* ============================================================
   头部：双层横向长卷
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--paper);
  border-bottom: 1px solid var(--line-dai);
}

.jn-utility {
  background: var(--brown);
  color: rgba(245, 239, 228, 0.76);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
}
.jn-utility__inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px clamp(14px, 2.4vw, 34px);
  min-height: 34px;
  padding-block: 6px;
}
.jn-utility__brand,
.jn-utility__version,
.jn-utility__util {
  margin: 0;
  line-height: 1.4;
}
.jn-utility__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  color: var(--paper);
  font-weight: 700;
}
.jn-utility__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(61, 240, 192, 0.18);
  flex: none;
}
.jn-utility__version { color: rgba(245, 239, 228, 0.6); }
.jn-utility__util {
  margin-left: auto;
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.jn-masthead {
  position: relative;
  background:
    radial-gradient(120% 150% at 8% 0%, rgba(61, 240, 192, 0.07), transparent 58%),
    radial-gradient(90% 140% at 100% 120%, rgba(255, 91, 46, 0.06), transparent 60%),
    var(--paper);
}
.jn-masthead__inner {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  min-height: 78px;
  padding-block: 12px;
}

.jn-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  flex: none;
}
.jn-brand:hover { color: var(--ink); }
.jn-brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--dai);
  color: var(--paper);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.3rem;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 72% 100%, 0 100%);
  flex: none;
}
.jn-brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.jn-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
}
.jn-brand__sub {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.jn-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
  margin-left: auto;
}
.jn-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 26px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.jn-nav__list a {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  color: var(--dai);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.jn-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--flame);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.26s var(--ease);
}
.jn-nav__list a:hover,
.jn-nav__list a:focus-visible { color: var(--rust); }
.jn-nav__list a:hover::after,
.jn-nav__list a:focus-visible::after { transform: scaleX(1); }
.jn-nav__list a[aria-current="page"] {
  color: var(--rust);
  font-weight: 700;
}
.jn-nav__list a[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--flame);
  height: 3px;
}
.jn-nav__cta { flex: none; }

.jn-nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55em;
  margin-left: auto;
  padding: 0.6em 0.95em;
  background: var(--dai);
  color: var(--paper);
  border: 1px solid var(--dai);
  border-radius: 2px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
}
.jn-nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 18px;
  height: 13px;
}
.jn-nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--mint);
  transition: transform 0.24s var(--ease), opacity 0.18s var(--ease);
}
.jn-nav-toggle[aria-expanded="true"] .jn-nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.jn-nav-toggle[aria-expanded="true"] .jn-nav-toggle__bars span:nth-child(2) { opacity: 0; }
.jn-nav-toggle[aria-expanded="true"] .jn-nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.jn-meter {
  height: 2px;
  background: rgba(30, 58, 68, 0.12);
  overflow: hidden;
}
.jn-meter__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--dai) 0%, var(--mint) 58%, var(--flame) 100%);
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.72em 1.35em;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease), transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}
.btn--primary {
  background: var(--flame);
  color: #1B120E;
  box-shadow: 4px 4px 0 rgba(43, 33, 28, 0.9);
}
.btn--primary:hover {
  background: #FF7448;
  color: #1B120E;
  transform: translate(-1px, -1px);
  box-shadow: 6px 6px 0 rgba(43, 33, 28, 0.9);
}
.btn--ghost {
  background: transparent;
  border-color: var(--dai);
  color: var(--dai);
}
.btn--ghost:hover {
  background: var(--dai);
  color: var(--paper);
}
.section--dai .btn--ghost,
.section--ink .btn--ghost {
  border-color: rgba(245, 239, 228, 0.5);
  color: var(--paper);
}
.section--dai .btn--ghost:hover,
.section--ink .btn--ghost:hover {
  background: var(--paper);
  color: var(--dai);
}

/* ============================================================
   通用章节 / 版式
   ============================================================ */
.section { padding-block: clamp(40px, 6vw, 88px); }
.section--mist {
  background: var(--mist);
  color: var(--ink);
}
.section--dai {
  background: var(--dai);
  color: rgba(245, 239, 228, 0.9);
}
.section--ink {
  background: var(--brown);
  color: rgba(245, 239, 228, 0.9);
}
.section--dai a,
.section--ink a { color: var(--mint); }
.section--dai .section-head,
.section--ink .section-head { border-bottom-color: var(--line-light); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 0.9em;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--flame);
  flex: none;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px clamp(16px, 3vw, 40px);
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 40px);
  border-bottom: 1px solid var(--line-dai);
}
.section-head__title {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.14;
}
.section-head__note {
  margin: 0;
  max-width: 46ch;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--muted);
}
.section--dai .section-head__title,
.section--ink .section-head__title { color: var(--paper); }
.section--dai .section-head__note,
.section--ink .section-head__note { color: rgba(245, 239, 228, 0.7); }

.waterline {
  height: 2px;
  border: 0;
  margin-block: clamp(24px, 4vw, 56px);
  background: repeating-linear-gradient(90deg, rgba(30, 58, 68, 0.38) 0 18px, transparent 18px 32px);
}
.section--dai .waterline,
.section--ink .waterline {
  background: repeating-linear-gradient(90deg, rgba(61, 240, 192, 0.4) 0 18px, transparent 18px 32px);
}

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 680px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--offset > *:nth-child(even) { transform: translateY(clamp(16px, 3vw, 44px)); }
}

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  background: #FCF8F0;
  border: 1px solid var(--line-dai);
  border-radius: 2px;
  padding: clamp(16px, 2.2vw, 26px);
  box-shadow: 0 1px 0 rgba(30, 58, 68, 0.05);
}
.card--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}
.card__title {
  margin: 0 0 0.45em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  line-height: 1.3;
}
.card__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.section--dai .card,
.section--ink .card {
  background: rgba(245, 239, 228, 0.07);
  border-color: rgba(245, 239, 228, 0.2);
  box-shadow: none;
}
.section--dai .card__meta,
.section--ink .card__meta { color: rgba(245, 239, 228, 0.66); }

/* ---------- 比分 / 数字 ---------- */
.score {
  display: flex;
  align-items: baseline;
  gap: 0.5em;
  flex-wrap: wrap;
}
.score__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4.6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--dai);
}
.section--dai .score__num,
.section--ink .score__num { color: var(--mint); }
.score__label {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.section--dai .score__label,
.section--ink .score__label { color: rgba(245, 239, 228, 0.66); }

/* ---------- 浮标标牌 ---------- */
.float-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5em;
  padding: 0.5em 0.85em;
  background: var(--flame);
  color: #1B120E;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.3;
  box-shadow: 5px 5px 0 var(--brown);
  transform: translateY(-10px);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}
.float-tag:hover {
  transform: translateY(-16px);
  box-shadow: 8px 8px 0 var(--brown);
}
.float-tag__note {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9em;
  letter-spacing: 0.02em;
  color: rgba(27, 18, 14, 0.78);
}

/* ---------- 图片容器（页面阶段放占位） ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--mist);
  border: 1px solid var(--line-dai);
  border-radius: 2px;
  aspect-ratio: 16 / 10;
}
.media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame__ph {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(135deg, rgba(30, 58, 68, 0.09) 0 2px, transparent 2px 14px),
    linear-gradient(160deg, rgba(203, 217, 215, 0.95), rgba(245, 239, 228, 0.92));
}
.media-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.45em 0.85em;
  background: rgba(43, 33, 28, 0.86);
  color: var(--paper);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  line-height: 1.5;
}
.media-frame--arch {
  aspect-ratio: 3 / 4;
  border-radius: 50% 50% 2px 2px / 34% 34% 2px 2px;
}
.media-frame--cut {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), calc(100% - 40px) 100%, 0 100%);
}

/* ---------- 正文 ---------- */
.prose {
  max-width: 68ch;
  font-size: 1.0625rem;
  line-height: 1.82;
  color: #22282A;
}
.prose h2 {
  margin-top: 1.8em;
  font-size: clamp(1.3rem, 2vw, 1.75rem);
}
.prose h3 {
  margin-top: 1.5em;
  font-size: 1.12rem;
}
.prose ul,
.prose ol { padding-left: 1.35em; }
.prose li { margin-bottom: 0.4em; }
.prose blockquote {
  margin: 1.5em 0;
  padding: 0.9em 1.2em;
  border-left: 3px solid var(--flame);
  background: rgba(203, 217, 215, 0.45);
  color: var(--dai);
}
.prose strong { color: var(--ink); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  margin-block: clamp(16px, 2.4vw, 30px);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4em;
  list-style: none;
  margin: 0;
  padding: 0;
}
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li + li::before {
  content: "／";
  margin-right: 0.5em;
  color: var(--copper);
}
.breadcrumb a {
  color: var(--dai);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 58, 68, 0.32);
}
.breadcrumb a:hover { color: var(--rust); border-bottom-color: var(--rust); }
.breadcrumb [aria-current="page"] { color: var(--muted); }

/* ---------- 胶囊筛选 ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.4em 0.9em;
  background: transparent;
  border: 1px solid rgba(30, 58, 68, 0.28);
  border-radius: 999px;
  color: var(--dai);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.pill:hover {
  background: rgba(30, 58, 68, 0.08);
  color: var(--dai);
}
.pill--active {
  background: var(--dai);
  border-color: var(--dai);
  color: var(--paper);
}
.pill--active:hover {
  background: var(--dai);
  color: var(--paper);
}

/* ---------- 更多链接 ---------- */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding-bottom: 2px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--rust);
  text-decoration: none;
  border-bottom: 1px solid rgba(178, 58, 24, 0.35);
}
.link-more::after {
  content: "→";
  transition: transform 0.25s var(--ease);
}
.link-more:hover::after { transform: translateX(4px); }

/* ---------- 显现 ---------- */
.reveal {
  opacity: 0;
  translate: 0 18px;
  transition: opacity 0.55s var(--ease), translate 0.55s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  translate: 0 0;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 8vw, 110px);
  padding-block: clamp(36px, 6vw, 74px) 26px;
  background: var(--brown);
  color: rgba(245, 239, 228, 0.82);
  font-size: 0.94rem;
}
.site-footer::before {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -46%;
  width: min(620px, 82vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%,
    transparent 53%, rgba(61, 240, 192, 0.16) 54%, transparent 56%,
    transparent 64%, rgba(61, 240, 192, 0.1) 65%, transparent 67%,
    transparent 76%, rgba(176, 138, 82, 0.18) 77%, transparent 79%);
  pointer-events: none;
}
.site-footer::after {
  content: "";
  position: absolute;
  left: -18%;
  top: -30%;
  width: min(460px, 68vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%,
    transparent 58%, rgba(245, 239, 228, 0.07) 59%, transparent 61%,
    transparent 70%, rgba(245, 239, 228, 0.05) 71%, transparent 73%);
  pointer-events: none;
}
.site-footer .container { position: relative; z-index: 1; }

.jn-footer__mast {
  display: grid;
  gap: 4px;
  padding-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line-light);
}
.jn-footer__logo {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: 0.03em;
  color: var(--paper);
}
.jn-footer__latin {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  color: var(--copper);
}
.jn-footer__statement {
  margin: 10px 0 0;
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.7;
  color: rgba(245, 239, 228, 0.74);
}

.jn-footer__grid {
  display: grid;
  gap: clamp(20px, 3vw, 38px);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(26px, 4vw, 50px);
}
.jn-footer__col { min-width: 0; }
.jn-footer__heading {
  margin: 0 0 0.9em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--copper);
  text-transform: uppercase;
}
.jn-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5em;
}
.jn-footer__links a {
  color: rgba(245, 239, 228, 0.8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.jn-footer__links a:hover,
.jn-footer__links a:focus-visible {
  color: var(--mint);
  border-bottom-color: rgba(61, 240, 192, 0.6);
}

.jn-footer__col--contact { grid-column: 1 / -1; }
.jn-footer__contact {
  margin: 0 0 0.3em;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: rgba(245, 239, 228, 0.55);
}
.jn-footer__contact + .jn-copy { margin-bottom: 0.9em; }

.jn-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  max-width: 100%;
  padding: 0.35em 0.7em;
  background: rgba(245, 239, 228, 0.06);
  border: 1px dashed rgba(245, 239, 228, 0.3);
  border-radius: 2px;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.jn-copy:hover {
  background: rgba(61, 240, 192, 0.12);
  border-color: rgba(61, 240, 192, 0.55);
}
.jn-copy__value {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.jn-copy__hint {
  flex: none;
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.jn-footer__notes {
  display: grid;
  gap: 0.4em;
  margin-top: clamp(24px, 3.5vw, 42px);
  padding-top: clamp(16px, 2.4vw, 26px);
  border-top: 1px solid var(--line-light);
}
.jn-footer__note {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(245, 239, 228, 0.6);
}

.jn-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px clamp(14px, 3vw, 36px);
  margin-top: clamp(16px, 2.4vw, 26px);
  padding-top: 14px;
  border-top: 1px solid var(--line-light);
}
.jn-footer__legal {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: rgba(245, 239, 228, 0.55);
}
.jn-footer__legal--mono {
  font-family: var(--font-mono);
  color: var(--copper);
}
.site-footer :focus-visible { outline-color: var(--mint); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 900px) {
  html { scroll-padding-top: 112px; }

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

  .jn-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 90;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    padding: 6px var(--gutter) 18px;
    background: var(--paper);
    border-bottom: 1px solid var(--line-dai);
    box-shadow: 0 18px 34px rgba(43, 33, 28, 0.18);
  }
  .jn-nav[data-open="true"] { display: flex; }
  .jn-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .jn-nav__list li { border-top: 1px solid rgba(30, 58, 68, 0.14); }
  .jn-nav__list li:first-child { border-top: 0; }
  .jn-nav__list a {
    display: block;
    padding: 0.85em 0.1em;
    font-size: 1.05rem;
    font-weight: 600;
  }
  .jn-nav__list a::after { display: none; }
  .jn-nav__list a[aria-current="page"] { color: var(--rust); }
  .jn-nav__cta {
    margin-top: 14px;
    align-self: flex-start;
  }
}

@media (max-width: 700px) {
  .jn-utility__util { display: none; }
  .jn-utility__inner { gap: 4px 16px; }
  .jn-masthead__inner { min-height: 64px; }
  .jn-brand__mark { width: 38px; height: 38px; font-size: 1.1rem; }
  .jn-brand__sub { font-size: 0.64rem; letter-spacing: 0.12em; }
  .jn-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .jn-footer__col--contact { grid-column: auto; }
  .float-tag { transform: none; box-shadow: 4px 4px 0 var(--brown); }
  .float-tag:hover { transform: translateY(-4px); box-shadow: 5px 5px 0 var(--brown); }
}

@media (min-width: 901px) {
  .jn-nav-toggle { 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;
  }
  .reveal {
    opacity: 1;
    translate: none;
    transition: none;
  }
  .jn-meter__bar { transition: none; }
  .float-tag,
  .float-tag:hover { transform: none; }
}