/* ==========================================================================
   赌钱娱乐网会 · 全站共享样式
   文件位置：/assets/site.css
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 148px;
}

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

ul, ol { list-style: none; }

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

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

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

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #071612;
  --ink-800: #0E2A24;
  --ink-700: #143C33;
  --ink-600: #1D4B40;
  --gold: #C8A15A;
  --gold-dark: #8C6B35;
  --amber: #D9824B;
  --slate: #7C8F8A;
  --cream: #F3EDE2;
  --paper: #FBF7EF;

  --rail-w: 0px;
  --wrap: 1200px;

  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-body: "Noto Sans SC", Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-index: Inter, "Helvetica Neue", Arial, "PingFang SC", sans-serif;

  --line: rgba(200, 161, 90, 0.26);
  --line-soft: rgba(124, 143, 138, 0.22);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (min-width: 1240px) {
  :root { --rail-w: 52px; }
}

/* ---------- 3. 基础与中文排版 ---------- */
body {
  min-height: 100%;
  padding-left: var(--rail-w);
  background-color: var(--ink-800);
  background-image:
    radial-gradient(1100px 620px at 82% -12%, rgba(29, 75, 64, 0.55), transparent 62%),
    radial-gradient(900px 520px at -8% 102%, rgba(7, 22, 18, 0.72), transparent 60%);
  background-attachment: fixed;
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: 0.04em;
}

p { text-wrap: pretty; }

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

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

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(18px, 3.5vw, 44px);
}

/* ---------- 4. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: 8px;
  top: -80px;
  z-index: 300;
  padding: 12px 22px;
  background: var(--gold);
  color: var(--ink-900);
  font-size: 14px;
  letter-spacing: 0.1em;
  border-radius: 2px;
  transition: top 0.24s var(--ease);
}

.skip-link:focus {
  top: 8px;
}

/* ---------- 5. 品牌侧边轨道 ---------- */
.brand-rail {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--rail-w);
  z-index: 60;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: linear-gradient(180deg, var(--ink-900), var(--ink-700) 55%, var(--ink-900));
  border-right: 1px solid var(--line);
  pointer-events: none;
}

@media (min-width: 1240px) {
  .brand-rail { display: flex; }
}

.brand-rail__mark {
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

.brand-rail__mark--foot { background: var(--gold-dark); }

.brand-rail__text {
  writing-mode: vertical-rl;
  font-family: var(--font-index);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--slate);
}

/* ---------- 6. 刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: linear-gradient(180deg, rgba(7, 22, 18, 0.98), rgba(14, 42, 36, 0.92));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  position: relative;
  max-width: var(--wrap);
  margin-inline: auto;
  padding: 16px clamp(18px, 3.5vw, 44px) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

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

.masthead__name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.1;
  letter-spacing: 0.16em;
  padding-left: 0.16em;
  color: var(--cream);
  transition: color 0.3s var(--ease);
}

.masthead__brand:hover .masthead__name,
.masthead__brand:focus-visible .masthead__name { color: var(--gold); }

.masthead__domain {
  margin-top: 7px;
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
}

.masthead__subline {
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--slate);
}

/* ---------- 7. 顶部工具区 ---------- */
.header-tools {
  position: absolute;
  top: 18px;
  right: clamp(18px, 3.5vw, 44px);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 2;
}

.header-tools__version {
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  padding: 4px 9px;
  white-space: nowrap;
}

.header-tools__mail,
.btn {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  border-radius: 2px;
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease),
              background-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.header-tools__mail {
  padding: 5px 11px;
  border: 1px solid var(--line-soft);
  color: var(--cream);
  white-space: nowrap;
}

.header-tools__mail:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.header-tools__mail.is-copied,
.btn.is-copied {
  border-color: var(--amber);
  color: var(--amber);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  border: 1px solid rgba(200, 161, 90, 0.45);
  border-radius: 2px;
  color: var(--cream);
  font-size: 12.5px;
  letter-spacing: 0.16em;
}

.nav-toggle:hover { border-color: var(--gold); color: var(--gold); }

.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 10px;
}

.nav-toggle__bars i {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: currentColor;
  transition: transform 0.32s var(--ease);
}

.nav-toggle__bars i:nth-child(1) { top: 0; }
.nav-toggle__bars i:nth-child(2) { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) {
  transform: translateY(4.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) {
  transform: translateY(-4.5px) rotate(-45deg);
}

/* ---------- 8. 主导航 ---------- */
.site-nav {
  width: 100%;
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2.6vw, 40px);
  padding: 12px 0;
}

.site-nav__list li { position: relative; }

.site-nav__list li::before {
  content: attr(data-index);
  position: absolute;
  left: -11px;
  top: -3px;
  font-family: var(--font-index);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--gold-dark);
  pointer-events: none;
}

.site-nav__list a {
  position: relative;
  display: inline-block;
  padding: 4px 0;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: rgba(243, 237, 226, 0.82);
  transition: color 0.3s var(--ease);
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.36s var(--ease);
}

.site-nav__list a:hover { color: var(--cream); }
.site-nav__list a:hover::after { transform: scaleX(1); }

.site-nav__list a[aria-current="page"] { color: var(--gold); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); }

.site-nav__meta { display: none; }

.site-nav__meta-line {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  margin-bottom: 16px;
}

/* ---------- 9. 抽屉遮罩 ---------- */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 85;
  background: rgba(7, 22, 18, 0.68);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.34s var(--ease);
}

.nav-scrim[data-open] {
  opacity: 1;
  pointer-events: auto;
}

/* ---------- 10. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 120px);
  background: linear-gradient(180deg, var(--ink-700), var(--ink-900));
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-dark) 40%, var(--gold) 50%, var(--gold-dark) 60%, transparent);
  opacity: 0.55;
}

.site-footer__inner {
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 76px) clamp(18px, 3.5vw, 44px) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1.25fr;
  gap: clamp(24px, 4vw, 52px);
}

.footer-col__title {
  position: relative;
  margin-bottom: 18px;
  padding-bottom: 10px;
  font-family: var(--font-index);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.footer-col__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 1px;
  background: var(--gold-dark);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: 0.14em;
  color: var(--cream);
}

.footer-domain {
  margin-top: 6px;
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold-dark);
}

.footer-note {
  margin-top: 14px;
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

.footer-links li + li { margin-top: 10px; }

.footer-links a {
  display: inline-block;
  font-size: 14px;
  color: rgba(243, 237, 226, 0.82);
  transition: color 0.26s var(--ease), transform 0.26s var(--ease);
}

.footer-links a:hover {
  color: var(--gold);
  transform: translateX(5px);
}

.footer-contact li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.7;
}

.footer-contact li + li { margin-top: 10px; }

.footer-contact__k {
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-dark);
  padding-top: 3px;
}

.footer-contact__v { color: rgba(243, 237, 226, 0.86); word-break: break-all; }

.footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 28px;
  margin-top: clamp(34px, 5vw, 56px);
  padding: 20px 0 26px;
  border-top: 1px solid var(--line-soft);
}

.footer-base__copy,
.footer-base__icp {
  font-family: var(--font-index);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

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

/* ---------- 11. 通用按钮与标签 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  line-height: 1.4;
}

.btn--gold {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink-900);
}

.btn--gold:hover {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--paper);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(200, 161, 90, 0.45);
  color: var(--cream);
}

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

.tilt-tag {
  display: inline-block;
  padding: 5px 13px;
  border-radius: 2px;
  background: var(--gold);
  color: var(--ink-900);
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transform: rotate(-2.4deg);
  box-shadow: 0 8px 18px -10px rgba(0, 0, 0, 0.8);
}

.tilt-tag--amber {
  background: var(--amber);
  color: var(--paper);
  transform: rotate(1.6deg);
}

.tilt-tag--ghost {
  background: transparent;
  color: var(--gold);
  border: 1px solid rgba(200, 161, 90, 0.5);
  transform: rotate(1.4deg);
  box-shadow: none;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: transparent;
  color: var(--slate);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease),
              background-color 0.28s var(--ease);
}

.filter-chip:hover {
  color: var(--cream);
  border-color: rgba(200, 161, 90, 0.45);
}

.filter-chip.is-active {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-900);
}

.is-hidden { display: none !important; }

/* ---------- 12. 卡片与面包屑 ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: 3px;
  background: linear-gradient(180deg, rgba(29, 75, 64, 0.52), rgba(20, 60, 51, 0.74));
  transition: border-color 0.34s var(--ease), transform 0.34s var(--ease),
              box-shadow 0.34s var(--ease);
}

.card:hover {
  border-color: rgba(200, 161, 90, 0.55);
  transform: translateY(-3px);
  box-shadow: 0 20px 44px -30px rgba(7, 22, 18, 0.95);
}

.card--paper {
  background: linear-gradient(180deg, var(--paper), var(--cream));
  border-color: rgba(140, 107, 53, 0.28);
  color: var(--ink-700);
}

.card--paper h2,
.card--paper h3 { color: var(--ink-800); }

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 10px;
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
}

.breadcrumbs li { display: inline-flex; align-items: center; }

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--gold-dark);
}

.breadcrumbs a { transition: color 0.26s var(--ease); }
.breadcrumbs a:hover { color: var(--gold); }

/* ---------- 13. 正文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(243, 237, 226, 0.88);
}

.prose h2 {
  margin: 2.1em 0 0.7em;
  font-size: clamp(20px, 2.5vw, 28px);
  color: var(--cream);
}

.prose h3 {
  margin: 1.7em 0 0.55em;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--cream);
}

.prose p + p { margin-top: 1em; }

.prose ul,
.prose ol { margin-top: 1em; }

.prose li {
  position: relative;
  padding-left: 20px;
  margin-top: 0.5em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--gold);
}

.prose blockquote {
  margin-top: 1.4em;
  padding: 14px 20px;
  border-left: 2px solid var(--gold);
  background: rgba(29, 75, 64, 0.42);
  color: var(--cream);
  font-family: var(--font-display);
  font-size: 17px;
}

.prose--paper {
  padding: clamp(24px, 4vw, 48px);
  background: var(--paper);
  border: 1px solid rgba(140, 107, 53, 0.24);
  border-radius: 3px;
  color: var(--ink-700);
}

.prose--paper h2,
.prose--paper h3 { color: var(--ink-800); }

.prose--paper li::before { background: var(--gold-dark); }

.prose--paper blockquote {
  background: rgba(200, 161, 90, 0.14);
  color: var(--ink-800);
}

/* ---------- 14. 栅格与章节 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.section { padding-block: clamp(44px, 6.5vw, 92px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(24px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.section__index {
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold);
}

.section__title {
  font-size: clamp(22px, 3vw, 34px);
  color: var(--cream);
}

/* ---------- 15. 图片画框 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(200, 161, 90, 0.28);
  border-radius: 3px;
  background-color: var(--ink-900);
  background-image:
    repeating-linear-gradient(45deg, rgba(200, 161, 90, 0.06) 0 10px, transparent 10px 20px),
    linear-gradient(160deg, var(--ink-600), var(--ink-900));
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(200, 161, 90, 0.2);
  pointer-events: none;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.03);
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3  { aspect-ratio: 4 / 3; }
.media-frame--3x2  { aspect-ratio: 3 / 2; }
.media-frame--1x1  { aspect-ratio: 1 / 1; }
.media-frame--3x4  { aspect-ratio: 3 / 4; }

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 26px 16px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cream);
  background: linear-gradient(180deg, transparent, rgba(7, 22, 18, 0.88));
}

/* ---------- 16. 滚动显现 ---------- */
html.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.72s var(--ease), transform 0.72s var(--ease);
}

html.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 17. 滚动进度与回到顶部 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 2px;
  z-index: 120;
  background: linear-gradient(90deg, var(--gold-dark), var(--gold), var(--amber));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-index);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.34s var(--ease), transform 0.34s var(--ease), color 0.28s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.to-top:hover { color: var(--gold); }

.to-top__arrow { color: var(--gold); font-size: 13px; }

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .footer-col:last-child .footer-note { max-width: 46ch; }
}

@media (max-width: 1040px) {
  .header-tools__mail { display: none; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 96px; }

  .site-header__inner {
    align-items: flex-start;
    padding-top: 14px;
  }

  .masthead {
    align-items: flex-start;
    text-align: left;
    padding-right: 150px;
  }

  .masthead__brand { align-items: flex-start; }

  .header-tools {
    top: 14px;
    gap: 8px;
  }

  .header-tools__version { display: none; }

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

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(340px, 86vw);
    margin: 0;
    padding: 92px 26px 34px;
    display: flex;
    flex-direction: column;
    border-top: 0;
    border-left: 1px solid var(--line);
    background: linear-gradient(180deg, var(--ink-700), var(--ink-900));
    transform: translateX(102%);
    transition: transform 0.42s var(--ease);
    overflow-y: auto;
    z-index: 100;
  }

  .site-nav[data-open] { transform: translateX(0); }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0;
  }

  .site-nav__list li { border-bottom: 1px solid rgba(124, 143, 138, 0.16); }
  .site-nav__list li::before { display: none; }

  .site-nav__list a {
    display: block;
    padding: 16px 2px;
    font-size: 15px;
    letter-spacing: 0.16em;
  }

  .site-nav__list a::after { display: none; }

  .site-nav__list a[aria-current="page"] {
    color: var(--gold);
    padding-left: 20px;
  }

  .site-nav__list a[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 10px;
    height: 1px;
    background: var(--gold);
    transform: translateY(-50%);
  }

  .site-nav__meta {
    display: block;
    margin-top: auto;
    padding-top: 26px;
    border-top: 1px solid rgba(124, 143, 138, 0.18);
  }

  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-col:last-child { grid-column: auto; }
}

@media (max-width: 640px) {
  .masthead { padding-right: 0; }

  .masthead__subline { display: none; }

  .header-tools { top: 16px; }

  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: minmax(0, 1fr); }

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

  .footer-note { max-width: none; }

  .footer-base { justify-content: flex-start; }

  .footer-actions .btn { width: 100%; }
}

@media (max-width: 420px) {
  .masthead__name { font-size: 22px; letter-spacing: 0.1em; padding-left: 0.1em; }
  .nav-toggle__label { display: none; }
}

/* ---------- 19. 减弱动效 ---------- */
@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;
  }

  .site-nav { transition: none; }

  html.reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}