/* =========================================================
   hg-login.com.cn · 皇冠欢迎 · 全站共享样式 /assets/site.css
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root {
  --c-deep: #0B1F3A;
  --c-deep-2: #061224;
  --c-bluegray: #1A3A5C;
  --c-gold: #E8A33D;
  --c-gold-light: #F5C46D;
  --c-red: #C0272D;
  --c-paper: #F4F1E8;
  --c-paper-gray: #E8E4D8;
  --c-ink: #1A1A1A;
  --c-white: #FFFFFF;

  --font-heading: "Source Han Serif SC", "Songti SC", "Noto Serif CJK SC", serif;
  --font-body: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;

  --size-display: clamp(2.5rem, 8vw, 5rem);
  --size-h1: clamp(2rem, 6vw, 3.5rem);
  --size-h2: clamp(1.5rem, 4vw, 2.2rem);
  --size-h3: clamp(1.1rem, 2.5vw, 1.4rem);
  --size-body: 1rem;
  --size-caption: 0.875rem;
  --size-index: 0.75rem;

  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-8: 3rem;
  --sp-10: 4rem;
  --sp-12: 5rem;

  --rail-w: 260px;
  --content-w: 1180px;
  --content-narrow: 780px;
  --radius: 6px;
  --radius-card: 10px;
}

/* ---------- Reset 与基础排版 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding-top: 64px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-ink);
  background-color: var(--c-paper);
  background-image:
    linear-gradient(rgba(11, 31, 58, 0.034) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 31, 58, 0.034) 1px, transparent 1px);
  background-size: 36px 36px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--c-deep);
  margin: 0 0 0.6em;
}

p {
  margin: 0 0 1em;
}

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

a {
  color: var(--c-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--c-gold);
}

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

button {
  font: inherit;
  cursor: pointer;
}

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

#main-content {
  outline: none;
  scroll-margin-top: 72px;
}

@media (min-width: 1024px) {
  body {
    padding-top: 0;
    margin-left: var(--rail-w);
  }

  #main-content {
    scroll-margin-top: 0;
  }
}

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

/* ---------- Skip link ---------- */
.skip-link {
  position: fixed;
  top: -6rem;
  left: 0.75rem;
  z-index: 310;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--c-deep);
  background: var(--c-gold);
  border-radius: 0 0 6px 6px;
  padding: 0.7rem 1.25rem;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  color: var(--c-deep);
  outline: 2px solid var(--c-white);
  outline-offset: -2px;
}

/* ---------- 滚动进度 ---------- */
.route-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 300;
  pointer-events: none;
}

.route-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--c-gold), var(--c-red) 160%);
  transform: scaleX(var(--progress-ratio, 0));
  transform-origin: 0 50%;
  transition: transform 60ms linear;
}

@media (min-width: 1024px) {
  .route-progress {
    left: var(--rail-w);
  }
}

/* ---------- 品牌 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--c-white);
}

.brand:hover {
  color: var(--c-white);
}

.brand-crown {
  position: relative;
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
  width: 36px;
  height: 24px;
}

.brand-crown::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(180deg, var(--c-gold-light), var(--c-gold));
  border-radius: 2px;
}

.crown-spike {
  display: block;
  width: 8px;
  height: 14px;
  background: linear-gradient(180deg, var(--c-gold-light), var(--c-gold));
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.crown-spike--mid {
  width: 11px;
  height: 20px;
}

.brand-copy {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-white);
  white-space: nowrap;
}

.brand-code {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: var(--c-gold);
  opacity: 0.75;
  margin-top: 0.2rem;
  text-transform: uppercase;
}

@media (max-width: 420px) {
  .brand-code {
    display: none;
  }
}

/* ---------- 页头 / 侧边轨道 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: 64px;
  display: flex;
  align-items: center;
  background: rgba(11, 31, 58, 0.96);
  border-bottom: 1px solid rgba(232, 163, 61, 0.35);
}

.header-inner {
  position: relative;
  z-index: 215;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 0 1rem;
}

@media (min-width: 1024px) {
  .site-header {
    right: auto;
    width: var(--rail-w);
    height: 100vh;
    align-items: stretch;
    flex-direction: column;
    background:
      radial-gradient(120% 90% at 20% 0%, rgba(232, 163, 61, 0.12), transparent 42%),
      linear-gradient(180deg, var(--c-deep) 0%, var(--c-deep-2) 100%);
    border-right: 1px solid rgba(232, 163, 61, 0.22);
    border-bottom: none;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 2rem 1.6rem 0;
  }

  .header-inner::after {
    content: "";
    width: 100%;
    height: 1px;
    margin: 1.6rem 0 0;
    background: linear-gradient(90deg, rgba(232, 163, 61, 0.55), rgba(232, 163, 61, 0.06));
  }
}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(232, 163, 61, 0.5);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  color: var(--c-gold-light);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  line-height: 1;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.nav-toggle:hover {
  background: rgba(232, 163, 61, 0.14);
  color: var(--c-white);
}

.nav-toggle-box {
  position: relative;
  display: block;
  width: 16px;
  height: 12px;
}

.nav-toggle-line {
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s ease, top 0.25s ease;
}

.nav-toggle-line:nth-child(1) {
  top: 0;
}

.nav-toggle-line:nth-child(2) {
  top: 6px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-toggle-text {
  line-height: 1;
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

/* ---------- 导航抽屉 / 轨道 ---------- */
.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 195;
  width: min(320px, 86vw);
  display: flex;
  flex-direction: column;
  padding: 5rem 1.25rem 2rem;
  background: linear-gradient(200deg, var(--c-deep), var(--c-deep-2));
  border-left: 1px solid rgba(232, 163, 61, 0.35);
  transform: translateX(100%);
  transition: transform 0.28s ease;
  overflow-y: auto;
}

.site-nav[data-open] {
  transform: translateX(0);
  box-shadow: -24px 0 60px rgba(6, 18, 36, 0.45);
}

@media (min-width: 1024px) {
  .site-nav {
    position: static;
    width: auto;
    flex: 1;
    transform: none;
    transition: none;
    overflow: visible;
    background: transparent;
    border: 0;
    padding: 2.2rem 0 0;
  }
}

.nav-caption {
  margin: 0 0 1.25rem;
  padding-left: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--c-gold);
  opacity: 0.6;
}

.nav-rail {
  position: absolute;
  top: 6.5rem;
  bottom: 6.5rem;
  left: 21px;
  width: 1px;
  background: linear-gradient(180deg, rgba(232, 163, 61, 0.45), rgba(244, 241, 232, 0.12) 60%, rgba(232, 163, 61, 0.4));
}

.nav-list {
  display: flex;
  flex-direction: column;
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 0.7rem 1rem 0.7rem 2.55rem;
  color: rgba(244, 241, 232, 0.72);
  text-decoration: none;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  width: 5px;
  height: 5px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: rgba(244, 241, 232, 0.35);
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.nav-link:hover {
  color: var(--c-white);
  background: rgba(232, 163, 61, 0.08);
}

.nav-link:hover::before {
  background: var(--c-gold-light);
}

.nav-link[aria-current="page"] {
  color: var(--c-white);
  background: linear-gradient(90deg, rgba(232, 163, 61, 0.2), transparent 75%);
}

.nav-link[aria-current="page"]::before {
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, 0.16);
  transform: translateY(-50%) scale(1.2);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--c-gold);
  opacity: 0.75;
}

.nav-name {
  font-size: 0.94rem;
  letter-spacing: 0.05em;
}

.nav-meta {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  border-top: 1px solid rgba(244, 241, 232, 0.1);
  padding: 1.25rem 0.2rem 0.25rem;
}

@media (min-width: 1024px) {
  .nav-meta {
    padding: 1.25rem 1.6rem 1.5rem;
  }
}

.nav-meta-line {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 232, 0.42);
}

/* ---------- 抽屉遮罩 ---------- */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 190;
  background: rgba(6, 18, 36, 0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.nav-scrim:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
}

@media (min-width: 1024px) {
  .nav-scrim {
    display: none;
  }
}

body.is-nav-open {
  overflow: hidden;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-deep-2) 100%);
  color: rgba(244, 241, 232, 0.76);
  border-top: 1px solid rgba(232, 163, 61, 0.28);
  padding: 3.5rem 1.25rem 0;
}

.footer-inner {
  max-width: var(--content-w);
  margin-inline: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem 2rem;
  padding-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.7fr 0.8fr 0.8fr 1.4fr;
  }
}

.footer-col {
  min-width: 0;
}

.footer-col--brand {
  display: flex;
  flex-direction: column;
}

.footer-trust {
  margin: 1.2rem 0 0;
  font-size: 0.85rem;
  line-height: 1.9;
  color: rgba(244, 241, 232, 0.55);
  max-width: 30rem;
}

.footer-title {
  margin: 0.2rem 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-gold);
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: rgba(244, 241, 232, 0.7);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: color 0.2s ease, gap 0.2s ease;
}

.footer-links a::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--c-gold);
}

.footer-links a:hover {
  color: var(--c-gold-light);
  gap: 0.7rem;
}

.footer-line {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 0 0 0.65rem;
  font-size: 0.86rem;
  line-height: 1.6;
  color: rgba(244, 241, 232, 0.68);
}

.line-label {
  flex: 0 0 auto;
  min-width: 2.8em;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  opacity: 0.8;
  padding-top: 0.15rem;
  text-transform: uppercase;
}

.copy-chip {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  color: var(--c-gold-light);
  background: rgba(232, 163, 61, 0.12);
  border: 1px solid rgba(232, 163, 61, 0.4);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.copy-chip:hover {
  background: var(--c-gold);
  color: var(--c-deep);
}

.footer-line--address {
  flex-direction: column;
  gap: 0.15rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 1.5rem;
  padding: 1.4rem 0;
  border-top: 1px solid rgba(244, 241, 232, 0.1);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: rgba(244, 241, 232, 0.5);
}

.footer-copy {
  margin: 0;
}

.footer-icp {
  margin: 0;
}

.footer-update {
  margin: 0 0 0 auto;
}

/* ---------- 容器与章节 ---------- */
.container {
  width: 100%;
  max-width: var(--content-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--wide {
  max-width: 1400px;
}

.section {
  padding-top: var(--sp-10);
  padding-bottom: var(--sp-10);
}

.section--tight {
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
}

.section--deep {
  background: var(--c-deep);
  color: var(--c-paper);
}

.section--deep h1,
.section--deep h2,
.section--deep h3 {
  color: var(--c-white);
}

.section--paper {
  background: var(--c-paper-gray);
}

@media (min-width: 1024px) {
  .section {
    padding-top: var(--sp-12);
    padding-bottom: var(--sp-12);
  }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.btn:active {
  transform: translateY(0);
}

.btn--gold {
  background: var(--c-gold);
  color: var(--c-deep);
}

.btn--gold:hover {
  background: var(--c-gold-light);
  color: var(--c-deep);
  box-shadow: 0 6px 20px rgba(232, 163, 61, 0.35);
  transform: translateY(-1px);
}

.btn--deep {
  background: var(--c-deep);
  color: var(--c-white);
}

.btn--deep:hover {
  background: var(--c-bluegray);
  color: var(--c-gold-light);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  border-color: rgba(11, 31, 58, 0.4);
  color: var(--c-deep);
}

.btn--outline:hover {
  border-color: var(--c-gold);
  background: rgba(232, 163, 61, 0.08);
  color: var(--c-deep);
}

.btn--sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--c-bluegray);
}

.breadcrumb a {
  color: var(--c-bluegray);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--c-gold);
}

.breadcrumb li + li::before {
  content: "/";
  margin: 0 0.5em;
  color: rgba(232, 163, 61, 0.7);
}

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

/* ---------- 纸卡叠层 ---------- */
.paper-card {
  position: relative;
  z-index: 1;
  background: var(--c-white);
  border: 1px solid rgba(11, 31, 58, 0.14);
  border-radius: var(--radius-card);
  padding: 1.75rem;
  box-shadow: 0 1px 2px rgba(6, 18, 36, 0.08), 0 6px 20px rgba(6, 18, 36, 0.06);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.paper-card::before {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: -4px;
  height: 6px;
  background: var(--c-paper-gray);
  border: 1px solid rgba(11, 31, 58, 0.08);
  border-top: 0;
  border-radius: 0 0 8px 8px;
  z-index: -1;
}

.paper-card:hover {
  border-color: rgba(232, 163, 61, 0.55);
  box-shadow: 0 2px 5px rgba(6, 18, 36, 0.08), 0 14px 34px rgba(6, 18, 36, 0.12);
  transform: translateY(-2px);
}

/* ---------- 框景窗口 ---------- */
.window-frame {
  position: relative;
  background: var(--c-white);
  border: 1px solid rgba(11, 31, 58, 0.2);
  border-radius: var(--radius-card);
  box-shadow: 0 24px 70px rgba(6, 18, 36, 0.18);
}

.window-frame::before {
  content: attr(data-zone);
  position: absolute;
  top: -1px;
  left: 1.4rem;
  transform: translateY(-50%);
  padding: 0.15rem 0.7rem;
  background: var(--c-paper);
  border: 1px solid rgba(232, 163, 61, 0.45);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  color: var(--c-gold);
  white-space: nowrap;
}

.window-frame--deep {
  background: var(--c-deep);
  border-color: rgba(232, 163, 61, 0.4);
}

.window-frame--deep::before {
  background: var(--c-deep);
  color: var(--c-gold-light);
}

/* ---------- 章节标题 ---------- */
.section-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1rem;
  margin: 0 0 2rem;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-gold);
}

.section-title {
  font-size: var(--size-h2);
  margin: 0;
}

.section-note {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--c-bluegray);
}

/* ---------- 数据总览 ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(11, 31, 58, 0.16);
  border: 1px solid rgba(11, 31, 58, 0.16);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.stat-cell {
  background: var(--c-paper);
  padding: 1.4rem 1.5rem;
}

.stat-cell--dark {
  background: var(--c-deep);
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.1;
  color: var(--c-deep);
  margin-bottom: 0.4rem;
}

.stat-value em {
  font-style: italic;
  color: var(--c-gold);
}

.stat-cell--dark .stat-value {
  color: var(--c-gold-light);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--c-bluegray);
  text-transform: uppercase;
}

.stat-cell--dark .stat-label {
  color: rgba(244, 241, 232, 0.55);
}

@media (min-width: 768px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 地图图例 ---------- */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.4rem;
  padding: 0.9rem 1.2rem;
  background: var(--c-white);
  border: 1px solid rgba(11, 31, 58, 0.16);
  border-radius: var(--radius-card);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--c-bluegray);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.legend-key {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--c-gold);
}

.legend-key--deep {
  background: var(--c-deep);
}

.legend-key--red {
  background: var(--c-red);
}

.legend-key--paper {
  background: var(--c-paper-gray);
  border: 1px solid rgba(11, 31, 58, 0.3);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(11, 31, 58, 0.22);
  background: var(--c-white);
  color: var(--c-bluegray);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
}

.tag--gold {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-deep);
  font-weight: 700;
}

.tag--red {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
}

.tag--line {
  background: transparent;
  border-color: currentColor;
  color: var(--c-red);
}

/* ---------- 图片容器 ---------- */
.media-block {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-card);
  border: 1px solid rgba(232, 163, 61, 0.28);
  background:
    radial-gradient(80% 110% at 70% 0%, rgba(232, 163, 61, 0.16), transparent 55%),
    linear-gradient(140deg, var(--c-bluegray), var(--c-deep));
  color: rgba(244, 241, 232, 0.5);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  overflow: hidden;
}

.media-block::before {
  content: attr(data-label);
  padding: 0 1rem;
  text-align: center;
}

.media-block::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(244, 241, 232, 0.12);
  border-radius: calc(var(--radius-card) - 3px);
  pointer-events: none;
}

.media-block--wide {
  aspect-ratio: 21 / 9;
}

.media-block--portrait {
  aspect-ratio: 3 / 4;
}

.media-block--track {
  background:
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(232, 163, 61, 0.14) 18px 19px),
    radial-gradient(90% 120% at 75% 0%, rgba(232, 163, 61, 0.18), transparent 55%),
    linear-gradient(140deg, var(--c-deep), var(--c-bluegray));
}

/* ---------- 栅格与主窄栏 ---------- */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2,
.grid--3 {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

.layout-aside {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

.layout-aside-main {
  min-width: 0;
}

@media (min-width: 1024px) {
  .layout-aside {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 3rem;
  }
}

/* ---------- 手风琴 ---------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.accordion-item {
  background: var(--c-white);
  border: 1px solid rgba(11, 31, 58, 0.14);
  border-radius: var(--radius-card);
  box-shadow: 0 1px 2px rgba(6, 18, 36, 0.05);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.accordion-item.is-open {
  border-color: rgba(232, 163, 61, 0.55);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: 0;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--c-deep);
  border-radius: var(--radius-card);
}

.accordion-trigger::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--c-gold);
  transition: transform 0.25s ease;
}

.accordion-item.is-open .accordion-trigger::after {
  transform: rotate(45deg);
}

.accordion-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}

.accordion-item.is-open .accordion-panel {
  grid-template-rows: 1fr;
}

.accordion-panel-inner {
  overflow: hidden;
  min-height: 0;
  padding: 0 1.5rem;
}

.accordion-panel-inner p:last-child {
  margin-bottom: 1.4rem;
}

/* ---------- 滚动显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

.js [data-reveal][data-reveal-delay="1"] {
  transition-delay: 0.1s;
}

.js [data-reveal][data-reveal-delay="2"] {
  transition-delay: 0.2s;
}

.js [data-reveal][data-reveal-delay="3"] {
  transition-delay: 0.3s;
}

/* ---------- 动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .js [data-reveal],
  .js [data-reveal][data-reveal-delay] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .route-progress::after {
    transition: none;
  }
}