/* ======================================================
   SITE KIT · 新葡萄8883官网AMG（中国）站
   深紫夜图 / 金色坐标 / 玻璃浮岛
   File: /assets/site.css
   ====================================================== */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ---------- 2. 设计变量 ---------- */
:root {
  /* 色彩 */
  --color-bg: #0E0A14;
  --color-glass: rgba(26, 20, 36, 0.68);
  --color-glass-strong: rgba(36, 28, 51, 0.88);
  --color-elevated: #241C33;
  --color-text-primary: #F5F3F7;
  --color-text-secondary: #B9B0C7;
  --color-accent-gold: #D4AF37;
  --color-accent-gold-bright: #EACF6E;
  --color-accent-purple: #7A6FF0;
  --color-success: #5A9367;
  --color-warning: #C08A5A;
  --color-border: rgba(59, 50, 72, 0.65);
  --color-border-gold: rgba(212, 175, 55, 0.3);

  /* 字体 */
  --font-title: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-body: "Noto Sans SC", "Inter", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", monospace;

  /* 字号 */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-hero: clamp(2.4rem, 5vw + 1rem, 4.5rem);
  --fs-title: clamp(1.8rem, 3vw + 0.5rem, 3rem);
  --fs-subtitle: clamp(1.25rem, 1.5vw + 0.5rem, 1.75rem);

  /* 布局 */
  --content-max: 1200px;
  --container-pad: clamp(16px, 4vw, 48px);
  --header-top: 14px;
  --header-pill-h: 62px;
  --radius-pill: 999px;
  --radius-card: 20px;
  --radius-sm: 10px;
  --shadow-pill: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --ease: 300ms ease;
  --z-header: 1000;
  --z-progress: 2000;
  --z-skip: 3000;
}

/* ---------- 3. 基础排版 ---------- */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.8;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@media (min-width: 900px) {
  body {
    background-image:
      radial-gradient(1000px 520px at 88% -60px, rgba(122, 111, 240, 0.09), transparent),
      radial-gradient(800px 420px at -12% 24%, rgba(212, 175, 55, 0.04), transparent);
    background-attachment: fixed;
  }
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-title);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--color-text-primary);
}

h1 { font-size: var(--fs-hero); font-weight: 800; }
h2 { font-size: var(--fs-title); }
h3 { font-size: var(--fs-subtitle); }

p {
  max-width: 68ch;
  margin-bottom: 1em;
}

a {
  color: var(--color-accent-gold);
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease), opacity var(--ease);
}

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

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

::selection {
  background: rgba(212, 175, 55, 0.28);
  color: var(--color-text-primary);
}

/* ---------- 4. 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 4px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: var(--z-skip);
  padding: 12px 24px;
  background: var(--color-elevated);
  border: 1px solid var(--color-accent-gold);
  color: var(--color-text-primary);
  border-radius: 8px;
  font-size: var(--fs-sm);
  transform: translateY(-220%);
  transition: transform 200ms ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- 5. 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-purple));
  z-index: var(--z-progress);
  pointer-events: none;
}

/* ---------- 6. 布局工具 ---------- */
.container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

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

@media (max-width: 768px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

/* 非对称 12 列偏置栅格 */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(16px, 2vw, 32px);
}

.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-9 { grid-column: span 9; }
.col-span-12 { grid-column: span 12; }
.col-offset-1 { grid-column-start: 2; }
.col-offset-2 { grid-column-start: 3; }
.col-offset-3 { grid-column-start: 4; }

@media (max-width: 899px) {
  .col-span-4,
  .col-span-5,
  .col-span-6,
  .col-span-7,
  .col-span-8,
  .col-span-9 {
    grid-column: span 12;
  }
  .col-offset-1,
  .col-offset-2,
  .col-offset-3 {
    grid-column-start: auto;
  }
}

/* ---------- 7. 页面区块 ---------- */
.section-block {
  position: relative;
  padding-top: clamp(64px, 10vw, 128px);
  padding-bottom: clamp(64px, 10vw, 128px);
}

#main-content:focus {
  outline: none;
}

/* ---------- 8. 头部 ---------- */
.site-header {
  position: fixed;
  top: var(--header-top);
  left: 0;
  right: 0;
  z-index: var(--z-header);
  display: flex;
  justify-content: center;
  padding: 0 var(--container-pad);
  pointer-events: none;
}

.site-header__pill {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 7px 12px 7px 18px;
  background: rgba(36, 28, 51, 0.82);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid var(--color-border-gold);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-pill), 0 0 0 1px rgba(212, 175, 55, 0.04) inset;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 12px;
  border-right: 1px solid var(--color-border);
  margin-right: 4px;
}

.site-header__mark {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--color-accent-gold) 0%, var(--color-accent-purple) 100%);
  transform: rotate(45deg);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.45);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.site-header__brand-name {
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.site-header__brand-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  padding: 8px 12px 8px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border: 1px solid transparent;
  white-space: nowrap;
  transition: color var(--ease), background-color var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.site-nav__link::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-accent-gold);
  opacity: 0.5;
  transform: translateY(-1px);
  transition: opacity var(--ease), content 0s;
}

.site-nav__link:hover {
  color: var(--color-text-primary);
  background: rgba(212, 175, 55, 0.06);
  border-color: rgba(212, 175, 55, 0.2);
}

.site-nav__link:hover::before,
.site-nav__link[aria-current="page"]::before {
  opacity: 1;
}

.site-nav__link[aria-current="page"] {
  color: var(--color-text-primary);
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--color-border-gold);
  box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.06) inset;
}

.site-nav__link[aria-current="page"]::before {
  content: attr(data-index) " /";
  font-weight: 500;
}

/* 头部章节指示器 */
.site-header__chapter {
  display: none;
  flex-shrink: 0;
  max-width: 150px;
  padding: 4px 6px 4px 14px;
  border-left: 1px solid var(--color-border-gold);
  margin-left: 4px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--color-accent-gold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__chapter.is-visible {
  display: inline-block;
}

/* 导航切换按钮 */
.site-nav__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 50%;
  cursor: pointer;
  transition: border-color var(--ease), background-color var(--ease);
}

.site-nav__toggle:hover {
  border-color: var(--color-border-gold);
  background: rgba(212, 175, 55, 0.06);
}

.site-nav__toggle-bar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--ease);
}

.site-nav__toggle-bar:nth-child(1) {
  transform: translate(-50%, calc(-50% - 4px));
}

.site-nav__toggle-bar:nth-child(2) {
  transform: translate(-50%, calc(-50% + 4px));
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar:nth-child(1) {
  transform: translate(-50%, -50%) rotate(45deg);
}

.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar:nth-child(2) {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* 移动端导航 */
@media (max-width: 899px) {
  .site-header__pill {
    width: 100%;
    max-width: 520px;
    justify-content: space-between;
    padding: 6px 8px 6px 14px;
  }

  .site-header__brand {
    border-right: none;
    padding-right: 4px;
    margin-right: 0;
  }

  .site-nav__toggle {
    display: block;
  }

  .site-header__chapter {
    display: none !important;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    z-index: 10;
    padding: 12px;
    background: rgba(36, 28, 51, 0.96);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    backdrop-filter: blur(24px) saturate(1.3);
    border: 1px solid var(--color-border-gold);
    border-radius: 22px;
    box-shadow: var(--shadow-pill);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.98);
    transition: opacity 300ms ease, transform 300ms ease, visibility 300ms;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .site-nav__link {
    display: flex;
    align-items: center;
    padding: 13px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    border: 1px solid transparent;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(212, 175, 55, 0.1);
  }
}

@media (min-width: 900px) and (max-width: 1180px) {
  .site-header__brand-name { font-size: 0.78rem; }
  .site-header__brand-sub { font-size: 0.56rem; letter-spacing: 0.14em; }
  .site-header__mark { width: 8px; height: 8px; }
  .site-header__pill { gap: 2px; padding-left: 12px; }
  .site-header__brand { gap: 8px; padding-right: 6px; }
  .site-nav__link { padding: 7px 8px; font-size: 0.78rem; }
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, transparent 0%, rgba(26, 20, 36, 0.72) 80%);
  border-top: 1px solid var(--color-border);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-gold) 0%, rgba(212, 175, 55, 0.08) 35%, transparent 80%);
}

.site-footer__main {
  display: grid;
  grid-template-columns: minmax(280px, 1.1fr) 1.4fr;
  gap: clamp(32px, 5vw, 64px);
  padding: 56px 0 40px;
}

.site-footer__identity {
  padding-right: 24px;
}

.site-footer__logo {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.site-footer__tagline {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: var(--color-accent-gold);
  margin-bottom: 20px;
}

.site-footer__contact {
  max-width: 46ch;
  font-size: 0.85rem;
  line-height: 2;
  color: var(--color-text-secondary);
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.site-footer__heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-text-secondary);
  margin-bottom: 18px;
}

.site-footer__index {
  color: var(--color-accent-gold);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.site-footer__list a {
  display: inline-block;
  padding-left: 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: color var(--ease), padding-left var(--ease);
}

.site-footer__list a:hover {
  color: var(--color-accent-gold);
  padding-left: 6px;
}

.site-footer__trust {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
}

.site-footer__trust p {
  max-width: 76ch;
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding: 20px 0 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.site-footer__bottom p {
  margin: 0;
}

@media (max-width: 768px) {
  .site-footer__main {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 40px;
  }

  .site-footer__identity {
    padding-right: 0;
  }

  .site-footer__nav {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (max-width: 460px) {
  .site-footer__nav {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* ---------- 10. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.925rem;
  font-weight: 500;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background-color var(--ease), color var(--ease), border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.btn--primary {
  background: var(--color-accent-gold);
  color: var(--color-bg);
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.2);
}

.btn--primary:hover {
  background: var(--color-accent-gold-bright);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 175, 55, 0.3);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-gold);
}

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

/* ---------- 11. 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  padding: 12px 0 0;
  margin-bottom: 24px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--color-border);
}

.breadcrumb li[aria-current="page"] {
  color: var(--color-text-secondary);
}

/* ---------- 12. 基础组件 ---------- */
/* 章节题头 */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.section-heading__index {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--color-accent-gold);
  white-space: nowrap;
}

.section-heading__title {
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.4rem);
  line-height: 1.3;
}

.section-heading__divider {
  flex: 1;
  height: 1px;
  min-width: 24px;
  background: linear-gradient(90deg, var(--color-border-gold), transparent);
  align-self: center;
}

/* 玻璃面板 */
.glass-panel {
  position: relative;
  background: var(--color-glass);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: clamp(24px, 3vw, 40px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.glass-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-gold) 0%, transparent 55%);
  opacity: 0.55;
  pointer-events: none;
}

/* 等宽索引标签 */
.index-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  border: 1px solid var(--color-border-gold);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-accent-gold);
  background: rgba(212, 175, 55, 0.04);
}

/* 地图图例 */
.map-legend {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 12px 18px;
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.map-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.map-legend__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.map-legend__dot--gold { background: var(--color-accent-gold); }
.map-legend__dot--purple { background: var(--color-accent-purple); }
.map-legend__dot--green { background: var(--color-success); }

/* 坐标十字装饰 */
.coord-tick {
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
  opacity: 0.4;
}

.coord-tick::before,
.coord-tick::after {
  content: "";
  position: absolute;
  background: var(--color-accent-gold);
}

.coord-tick::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  transform: translateY(-50%);
}

.coord-tick::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
}

/* 流体渐变光斑 */
.fluid-glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(60px);
  z-index: 0;
}

.fluid-glow--purple {
  background: radial-gradient(circle, rgba(122, 111, 240, 0.18), transparent 70%);
}

.fluid-glow--gold {
  background: radial-gradient(circle, rgba(212, 175, 55, 0.13), transparent 70%);
}

/* 图片占位容器 */
.image-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, rgba(122, 111, 240, 0.07), rgba(212, 175, 55, 0.04));
  border: 1px solid var(--color-border);
}

.image-frame--portrait { aspect-ratio: 4 / 5; }
.image-frame--wide { aspect-ratio: 21 / 9; }

.image-frame__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

/* ---------- 13. 表格 ---------- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  background: var(--color-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.table-wrap table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table-wrap th,
.table-wrap td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table-wrap th {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-accent-gold);
  background: rgba(212, 175, 55, 0.04);
}

.table-wrap tr:last-child td {
  border-bottom: none;
}

.table-wrap tbody tr:hover {
  background: rgba(212, 175, 55, 0.045);
}

/* ---------- 14. 提示条 ---------- */
.notice {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  border-left-width: 3px;
  background: var(--color-glass);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.notice--success { border-left-color: var(--color-success); }
.notice--warning { border-left-color: var(--color-warning); }
.notice--info { border-left-color: var(--color-accent-purple); }

.notice p {
  margin: 0;
  max-width: 65ch;
}

/* ---------- 15. 正文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

.prose p {
  margin-bottom: 1.2em;
}

.prose strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--color-border-gold);
}

.prose h2,
.prose h3,
.prose h4 {
  margin-top: 2em;
  margin-bottom: 0.6em;
  color: var(--color-text-primary);
}

/* ---------- 16. 内页首屏 ---------- */
.page-hero {
  padding-top: clamp(130px, 18vw, 200px);
  padding-bottom: clamp(48px, 6vw, 88px);
  position: relative;
}

.page-hero__index {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--color-accent-gold);
}

.page-hero__title {
  font-family: var(--font-title);
  font-size: clamp(2.2rem, 5vw + 1rem, 4.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin-bottom: 20px;
  max-width: 14em;
}

.page-hero__lead {
  max-width: 58ch;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-text-secondary);
}

/* ---------- 17. 滚动显现动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms cubic-bezier(0.22, 0.61, 0.36, 1), transform 600ms cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 18. 弱动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
    will-change: auto;
  }
}