/* ==========================================================================
   portal-aomen.com.cn — 共享站点样式 / assets/site.css
   澳门十大娱乐会馆 · V4.2 纯简入口
   骨架：技术蓝图网格（细线 / 坐标 / 索引）
   光色：霓虹紫 · 鎏金 · 电光青，深墨绿为底
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  background-color: #0B1F1A;
}

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, figcaption,
blockquote, dl, dt, dd, hr, pre {
  margin: 0;
}

ul, ol { list-style: none; padding: 0; }

a { color: inherit; text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

table { border-collapse: collapse; width: 100%; }

[hidden] { display: none !important; }

/* ---------- 2. 设计令牌 ---------- */
:root {
  /* 色彩 */
  --ink: #0B1F1A;
  --ink-2: #111214;
  --ink-3: #1A0B2E;
  --violet: #A855F7;
  --gold: #D4AF37;
  --amber: #FF7A45;
  --cyan: #2DD4BF;
  --mist: #E5E7EB;
  --silver: #9CA3AF;

  --glass: rgba(255, 255, 255, 0.08);
  --glass-strong: rgba(255, 255, 255, 0.13);
  --glass-line: rgba(168, 85, 247, 0.28);
  --hairline: rgba(229, 231, 235, 0.10);
  --hairline-2: rgba(229, 231, 235, 0.18);
  --hairline-gold: rgba(212, 175, 55, 0.24);
  --hairline-cyan: rgba(45, 212, 191, 0.30);

  --spot: rgba(168, 85, 247, 0.16);

  /* 字体 */
  --font-display: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Roboto Mono", Menlo, Consolas, monospace;

  /* 尺寸 */
  --gutter: clamp(1.15rem, 4vw, 3rem);
  --max: 1240px;
  --narrow: 760px;
  --rail-h: 54px;
  --radius: 14px;
  --radius-sm: 9px;
  --radius-pill: 999px;

  /* 动效 */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 0.55s;
}

/* ---------- 3. 基础排版 ---------- */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
  letter-spacing: 0.01em;
  background-color: var(--ink);
  background-image:
    radial-gradient(1150px 660px at 78% -8%, rgba(168, 85, 247, 0.18), transparent 62%),
    radial-gradient(900px 540px at 2% 102%, rgba(45, 212, 191, 0.10), transparent 62%),
    radial-gradient(760px 440px at 34% 42%, rgba(212, 175, 55, 0.055), transparent 72%),
    linear-gradient(rgba(168, 85, 247, 0.042) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 85, 247, 0.042) 1px, transparent 1px);
  background-size: auto, auto, auto, 72px 72px, 72px 72px;
  background-attachment: fixed, fixed, fixed, fixed, fixed;
  background-repeat: no-repeat, no-repeat, no-repeat, repeat, repeat;
}

main { flex: 1 0 auto; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-wrap: balance;
}

h1 { font-size: clamp(2.5rem, 7vw, 5.4rem); font-weight: 400; }
h2 { font-size: clamp(1.75rem, 3.6vw, 3rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.06rem; }

p { text-wrap: pretty; }

strong { font-weight: 600; color: #fff; }

::selection {
  background: rgba(168, 85, 247, 0.42);
  color: #fff;
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hairline-gold), transparent);
  margin: 2.5rem 0;
}

/* 焦点环：电光青 */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

/* 可访问的隐藏文本 */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. 布局工具 ---------- */
.container {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
}

.container--narrow {
  width: min(calc(100% - 2 * var(--gutter)), var(--narrow));
  margin-inline: auto;
}

.section {
  padding-block: clamp(2.75rem, 6vw, 5.5rem);
}

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--hairline);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.eyebrow--cyan { color: var(--cyan); }
.eyebrow--violet { color: var(--violet); }

.lede {
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.85;
  color: #cfd4da;
  max-width: 62ch;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.2vw, 1.75rem);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 5. 玻璃卡片与标签 ---------- */
.card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.4vw, 2rem);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.10), transparent 46%);
  pointer-events: none;
  opacity: 0.7;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow: 0 26px 60px -34px rgba(168, 85, 247, 0.85);
}

.card--spot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(220px circle at var(--spot-x, 50%) var(--spot-y, 0%), var(--spot), transparent 62%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
  z-index: -1;
}

.card--spot:hover::before { opacity: 1; }

.card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-weight: 500;
  color: #fff;
  margin-bottom: 0.6rem;
}

.card__text {
  font-size: 0.97rem;
  color: #c3c9d1;
}

.card__meta {
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.24rem 0.72rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(168, 85, 247, 0.45);
  background: rgba(168, 85, 247, 0.12);
  color: #dcc6f8;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  line-height: 1.7;
  white-space: nowrap;
}

.tag--gold {
  border-color: var(--hairline-gold);
  background: rgba(212, 175, 55, 0.12);
  color: #efdca0;
}

.tag--cyan {
  border-color: var(--hairline-cyan);
  background: rgba(45, 212, 191, 0.12);
  color: #a9f2e8;
}

.tag--amber {
  border-color: rgba(255, 122, 69, 0.42);
  background: rgba(255, 122, 69, 0.12);
  color: #ffc0a5;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.72rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-align: center;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease),
              border-color 0.3s var(--ease), color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(120deg, var(--violet), #7E3FD1);
  color: #fff;
  box-shadow: 0 18px 40px -22px rgba(168, 85, 247, 0.95);
}

.btn--primary:hover {
  box-shadow: 0 22px 48px -20px rgba(168, 85, 247, 1);
}

.btn--gold {
  border-color: rgba(212, 175, 55, 0.6);
  color: var(--gold);
  background: rgba(212, 175, 55, 0.06);
}

.btn--gold:hover {
  background: rgba(212, 175, 55, 0.14);
  border-color: var(--gold);
  color: #f0dc9a;
}

.btn--ghost {
  border-color: var(--glass-line);
  color: var(--mist);
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn--ghost:hover {
  border-color: var(--hairline-cyan);
  color: var(--cyan);
}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb {
  padding-block: 1.15rem;
  border-bottom: 1px solid var(--hairline);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--silver);
}

.breadcrumb__item { display: inline-flex; align-items: center; gap: 0.55rem; }

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(156, 163, 175, 0.5);
  font-family: var(--font-mono);
}

.breadcrumb__item a { color: var(--silver); transition: color 0.25s var(--ease); }
.breadcrumb__item a:hover { color: var(--violet); }

.breadcrumb__item [aria-current="page"] {
  color: var(--gold);
}

/* ---------- 8. 图片容器（页面阶段放 <img>） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  background:
    radial-gradient(120% 90% at 78% 12%, rgba(168, 85, 247, 0.32), transparent 60%),
    radial-gradient(90% 80% at 12% 92%, rgba(212, 175, 55, 0.22), transparent 62%),
    radial-gradient(70% 60% at 46% 50%, rgba(45, 212, 191, 0.14), transparent 70%),
    linear-gradient(160deg, #1A0B2E, #0B1F1A 72%);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(229, 231, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229, 231, 235, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.media > img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media__caption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ---------- 9. 页头 ---------- */
.site-header {
  position: relative;
  z-index: 60;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -120px;
  transform: translateX(-50%);
  z-index: 300;
  padding: 0.6rem 1.2rem;
  border-radius: 0 0 12px 12px;
  background: var(--gold);
  color: #16110a;
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  transition: top 0.22s var(--ease);
}

.skip-link:focus { top: 0; }

/* 9.1 顶部细轨 */
.header-rail {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(11, 31, 26, 0.78);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--hairline-gold);
}

.header-rail__inner {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
  min-height: var(--rail-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
}

.v4-return {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.85rem 0.3rem 0.6rem;
  border: 1px solid rgba(168, 85, 247, 0.45);
  border-radius: var(--radius-pill);
  color: var(--violet);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  line-height: 1.8;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
              background-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.v4-return:hover {
  color: var(--gold);
  border-color: rgba(212, 175, 55, 0.68);
  background-color: rgba(212, 175, 55, 0.09);
  box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.16), 0 12px 28px -16px rgba(212, 175, 55, 0.8);
}

.v4-return__icon { width: 14px; height: 14px; flex: none; }

.header-rail__coord {
  display: none;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver);
}

.header-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.18), 0 0 14px rgba(45, 212, 191, 0.9);
  flex: none;
}

/* 9.2 移动端开关 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.34rem 0.85rem;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-pill);
  background: var(--glass);
  color: var(--mist);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  line-height: 1.8;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

.nav-toggle:hover { border-color: rgba(45, 212, 191, 0.55); color: var(--cyan); }

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 18px;
  height: 9px;
  flex: none;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}

.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { top: 100%; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  top: 4px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  top: 4px;
  transform: rotate(-45deg);
}

/* 9.3 居中刊头 */
.masthead {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(1.1rem, 2.4vw, 1.6rem);
  display: grid;
  grid-template-columns: 1fr;
  align-items: end;
  gap: 1rem;
  text-align: center;
}

.masthead__kicker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.masthead__org {
  font-family: var(--font-display);
  font-size: 0.92rem;
  letter-spacing: 0.3em;
  color: var(--silver);
}

.masthead__coord {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(156, 163, 175, 0.62);
}

.masthead__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.masthead__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 4.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.05em;
  background: linear-gradient(102deg, #F6E8BC 0%, var(--gold) 34%, #C79BF2 70%, var(--violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.masthead__sub {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--silver);
}

.masthead__version {
  justify-self: center;
  padding: 0.3rem 0.9rem;
  border: 1px solid var(--hairline-gold);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* 9.4 主导航 */
.site-nav {
  position: fixed;
  inset: 0;
  z-index: 70;
  width: 100%;
  overflow-y: auto;
  padding: calc(var(--rail-h) + 2.25rem) var(--gutter) 3rem;
  background: rgba(11, 31, 26, 0.97);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  transform: translateY(-102%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.5s var(--ease), opacity 0.32s var(--ease), visibility 0.5s linear;
}

.site-nav[data-open] {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.site-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline);
}

.site-nav__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
}

.nav-close {
  padding: 0.3rem 0.85rem;
  border: 1px solid rgba(45, 212, 191, 0.45);
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease);
}

.nav-close:hover {
  background: rgba(45, 212, 191, 0.14);
  color: #e6fffb;
}

.site-nav__list {
  counter-reset: navi;
  display: flex;
  flex-direction: column;
}

.site-nav__list li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  border-bottom: 1px solid var(--hairline);
}

.site-nav__list li::before {
  counter-increment: navi;
  content: counter(navi, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: rgba(156, 163, 175, 0.5);
  flex: none;
}

.site-nav__list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex: 1 1 auto;
  padding: 0.85rem 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 5vw, 1.7rem);
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--violet), transparent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.36s var(--ease);
}

.site-nav__list a:hover { color: #fff; transform: translateX(3px); }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] { color: var(--cyan); }

.site-nav__list a[aria-current="page"]::after {
  transform: scaleX(1);
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.site-nav__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-top: 2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver);
}

.site-nav__foot span:first-child { color: var(--gold); }

/* ---------- 10. 页脚 ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  margin-top: auto;
  overflow: hidden;
  background: var(--ink-2);
  border-top: 1px solid var(--hairline-gold);
  color: var(--silver);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(168, 85, 247, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 85, 247, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 72%);
}

.site-footer > * { position: relative; z-index: 1; }

.footer-grid {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  padding: clamp(2.5rem, 5vw, 4.25rem) 0 2rem;
}

.footer-brand__mark {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  letter-spacing: 0.08em;
  background: linear-gradient(100deg, #F3E4B6, var(--gold) 48%, #C79BF2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.footer-brand__line {
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--violet);
}

.footer-brand__note {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  color: var(--silver);
  max-width: 34ch;
}

.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-nav__list a {
  display: inline-block;
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  color: #b9c0c8;
  transition: color 0.28s var(--ease), transform 0.28s var(--ease);
}

.footer-nav__list a:hover {
  color: var(--gold);
  transform: translateX(3px);
}

.footer-legal__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.5rem;
  margin-bottom: 1.1rem;
}

.footer-legal__list a {
  font-size: 0.86rem;
  letter-spacing: 0.12em;
  color: #9aa1aa;
  transition: color 0.28s var(--ease);
}

.footer-legal__list a:hover { color: var(--cyan); }

.footer-legal__icp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(156, 163, 175, 0.75);
}

.footer-contact {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
  padding: 1.35rem 0;
  border-top: 1px solid var(--hairline);
}

.footer-contact__line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.85rem;
  font-size: 0.86rem;
  color: #aeb5bd;
}

.footer-contact__line a {
  color: var(--mist);
  border-bottom: 1px solid rgba(229, 231, 235, 0.22);
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease);
}

.footer-contact__line a:hover {
  color: var(--violet);
  border-color: var(--violet);
}

.footer-contact__sep { color: rgba(156, 163, 175, 0.55); }

.footer-base {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  margin-inline: auto;
  padding: 1.1rem 0 2rem;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(156, 163, 175, 0.8);
}

.footer-base__ver { color: var(--gold); }

/* ---------- 11. 滚动进度条（JS 注入） ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  pointer-events: none;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: calc(var(--progress, 0) * 100%);
  background: linear-gradient(90deg, var(--cyan), var(--violet) 52%, var(--gold));
  transition: width 0.12s linear;
}

/* ---------- 12. 响应式：平板 ---------- */
@media (min-width: 720px) {
  .masthead {
    grid-template-columns: 1fr auto 1fr;
    text-align: left;
    gap: 1.5rem;
  }

  .masthead__kicker { align-items: flex-start; }
  .masthead__brand { align-items: center; }
  .masthead__version { justify-self: end; }

  .header-rail__coord { display: inline-flex; }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 2.5rem 3rem;
  }
}

/* ---------- 13. 响应式：桌面 ---------- */
@media (min-width: 861px) {
  .site-nav {
    position: static;
    inset: auto;
    z-index: auto;
    overflow: visible;
    padding: 0 0 0.5rem;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transform: none;
    opacity: 1;
    visibility: visible;
    width: min(calc(100% - 2 * var(--gutter)), var(--max));
    margin-inline: auto;
    transition: none;
  }

  .site-nav__head { display: none; }
  .site-nav__foot { display: none; }

  .site-nav__list {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem 2.1rem;
    padding-bottom: 1.1rem;
    border-bottom: 1px solid var(--hairline);
  }

  .site-nav__list li {
    border-bottom: 0;
    align-items: center;
    gap: 0.45rem;
  }

  .site-nav__list li::before {
    font-size: 0.6rem;
    transform: translateY(-0.35em);
  }

  .site-nav__list a {
    flex: 0 0 auto;
    padding: 0.5rem 0;
    font-family: var(--font-body);
    font-size: 0.88rem;
    letter-spacing: 0.16em;
    color: var(--silver);
  }

  .site-nav__list a:hover { transform: none; color: var(--mist); }
  .site-nav__list a::after { bottom: 0.15rem; }
  .site-nav__list a[aria-current="page"] { color: var(--cyan); }

  .nav-toggle { display: none; }
}

/* ---------- 14. 降级：减少动态 ---------- */
@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;
    transition-delay: 0ms !important;
  }

  .scroll-progress__bar { transition: none; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
}

/* ---------- 15. 打印 ---------- */
@media print {
  body { background: #fff; color: #111; }
  .site-header, .site-footer, .scroll-progress { display: none !important; }
}