/* =========================================================
   MELBET 手机赛事 · 共享样式 /assets/site.css
   深色底 + 珠宝色分区 + 刻度描边 + 命令栏导航
   ========================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dt, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
h1, h2, h3, h4 { font-weight: 300; line-height: 1.18; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 变量 ---------- */
:root {
  --mel-ink: #0B1233;
  --mel-teal: #0E3B3E;
  --mel-wine: #4A1230;
  --mel-violet: #241A55;
  --mel-orange: #FF6A1A;
  --mel-cyan: #35E0E0;
  --mel-magenta: #FF3EA5;
  --mel-amber: #FFC24B;
  --mel-paper: #F4F7FF;
  --mel-muted: #7C89B4;
  --mel-card: #151E45;
  --mel-line: rgba(124, 137, 180, 0.28);
  --mel-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --mel-font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --mel-font-mono: ui-monospace, "JetBrains Mono", SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
}

/* ---------- 基础排版 ---------- */
body {
  background-color: var(--mel-ink);
  color: var(--mel-paper);
  font-family: var(--mel-font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(70vw 45vw at 88% -8%, rgba(53, 224, 224, 0.10), transparent 62%),
    radial-gradient(55vw 40vw at -12% 18%, rgba(255, 106, 26, 0.09), transparent 60%),
    radial-gradient(60vw 40vw at 50% 108%, rgba(255, 62, 165, 0.07), transparent 65%);
}
#main-content { position: relative; z-index: 1; display: block; }
::selection { background: var(--mel-orange); color: #0B1233; }

:focus-visible {
  outline: 2px solid var(--mel-cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 排版工具 ---------- */
.mel-display {
  font-size: clamp(2.4rem, 7vw, 5.5rem);
  font-weight: 250;
  line-height: 0.98;
  letter-spacing: -0.015em;
}
.mel-em { font-style: italic; font-weight: 700; letter-spacing: 0.01em; }
.mel-mono {
  font-family: var(--mel-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}
.mel-index {
  display: inline-block;
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mel-cyan);
}
.mel-lede {
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  line-height: 1.72;
  color: #C6D0EE;
  max-width: 36em;
}
.mel-prose { max-width: 36em; }
.mel-prose p + p { margin-top: 1em; }
.mel-prose strong { color: #FFFFFF; font-weight: 600; }
.mel-text-muted { color: var(--mel-muted); }
.mel-text-cyan { color: var(--mel-cyan); }
.mel-text-amber { color: var(--mel-amber); }

/* ---------- 布局容器与栅格 ---------- */
.mel-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}
.mel-container--narrow { max-width: 960px; }
.mel-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 32px);
}
.mel-span-12 { grid-column: span 12; }
.mel-span-8 { grid-column: span 8; }
.mel-span-7 { grid-column: span 7; }
.mel-span-5 { grid-column: span 5; }
.mel-span-4 { grid-column: span 4; }
.mel-span-3 { grid-column: span 3; }
@media (max-width: 1000px) {
  .mel-span-8, .mel-span-7, .mel-span-5, .mel-span-4, .mel-span-3 { grid-column: span 12; }
}
.mel-stack { display: grid; gap: clamp(12px, 1.8vw, 24px); }
.mel-cluster { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---------- 章节与框景 ---------- */
.mel-section { position: relative; padding-block: clamp(40px, 7vw, 88px); }
.mel-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px;
  border-bottom: 1px dashed var(--mel-line);
  padding-bottom: 12px;
  margin-bottom: clamp(20px, 3vw, 36px);
}
.mel-section__label {
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mel-cyan);
}
.mel-section__count {
  margin-left: auto;
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mel-muted);
}
.mel-frame {
  position: relative;
  border: 1px solid var(--mel-line);
  border-radius: clamp(22px, 3vw, 34px);
  padding: clamp(20px, 3.4vw, 52px);
  background: linear-gradient(160deg, rgba(36, 26, 85, 0.55), rgba(11, 18, 51, 0.2));
}
.mel-frame::before {
  content: "";
  position: absolute;
  left: clamp(20px, 3vw, 44px);
  right: clamp(20px, 3vw, 44px);
  top: -1px;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--mel-cyan) 0 10px, transparent 10px 22px);
  opacity: 0.55;
}
.mel-frame::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 26px;
  bottom: 26px;
  width: 1px;
  background: repeating-linear-gradient(180deg, var(--mel-orange) 0 8px, transparent 8px 20px);
  opacity: 0.4;
}
.mel-frame__cap {
  position: absolute;
  left: clamp(20px, 3vw, 44px);
  top: -11px;
  padding: 2px 10px;
  background: var(--mel-ink);
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mel-amber);
}
.mel-rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--mel-line), transparent);
}

/* ---------- 色彩分区 ---------- */
.mel-zone { position: relative; }
.mel-zone--teal { background: linear-gradient(180deg, rgba(14, 59, 62, 0.92), rgba(14, 59, 62, 0.34)); }
.mel-zone--wine { background: linear-gradient(180deg, rgba(74, 18, 48, 0.92), rgba(74, 18, 48, 0.34)); }
.mel-zone--violet { background: linear-gradient(180deg, rgba(36, 26, 85, 0.94), rgba(36, 26, 85, 0.4)); }

/* ---------- 按钮 / 胶囊 / 标签 ---------- */
.mel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  transition: transform 0.22s var(--mel-ease), background-color 0.22s var(--mel-ease),
              color 0.22s var(--mel-ease), border-color 0.22s var(--mel-ease), box-shadow 0.22s var(--mel-ease);
}
.mel-btn--primary { background: var(--mel-orange); color: #0B1233; }
.mel-btn--primary:hover { transform: translateY(-3px); box-shadow: 0 14px 28px rgba(255, 106, 26, 0.28); }
.mel-btn--ghost { border-color: rgba(53, 224, 224, 0.45); color: var(--mel-paper); }
.mel-btn--ghost:hover { background: rgba(53, 224, 224, 0.12); border-color: var(--mel-cyan); }
.mel-btn--quiet { border-color: var(--mel-line); color: #C3CCE8; }
.mel-btn--quiet:hover { border-color: var(--mel-amber); color: var(--mel-amber); }

.mel-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform 0.2s var(--mel-ease), background-color 0.2s var(--mel-ease),
              color 0.2s var(--mel-ease), border-color 0.2s var(--mel-ease), box-shadow 0.2s var(--mel-ease);
}
.mel-pill--ghost { border-color: rgba(53, 224, 224, 0.42); color: var(--mel-cyan); }
.mel-pill--ghost:hover { background: rgba(53, 224, 224, 0.14); }
.mel-pill--amber { background: var(--mel-amber); color: #0B1233; font-weight: 600; }
.mel-pill--amber:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(255, 194, 75, 0.22); }

.mel-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  background: rgba(255, 62, 165, 0.14);
  border: 1px solid rgba(255, 62, 165, 0.35);
  color: #FF87C8;
}
.mel-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  background: rgba(255, 194, 75, 0.14);
  border: 1px solid rgba(255, 194, 75, 0.45);
  color: var(--mel-amber);
}
.mel-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px dashed rgba(53, 224, 224, 0.5);
  color: var(--mel-cyan);
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: color 0.2s var(--mel-ease), border-color 0.2s var(--mel-ease), background-color 0.2s var(--mel-ease);
}
.mel-copy:hover { background: rgba(53, 224, 224, 0.12); }
.mel-copy[data-state="done"] { color: var(--mel-amber); border-color: var(--mel-amber); }

/* ---------- 卡片 / 旁注 / 列表 / 指标 ---------- */
.mel-card {
  position: relative;
  background: var(--mel-card);
  border: 1px solid rgba(124, 137, 180, 0.24);
  border-radius: clamp(20px, 2.4vw, 28px);
  padding: clamp(18px, 2.4vw, 30px);
  transition: transform 0.22s var(--mel-ease), border-color 0.22s var(--mel-ease), box-shadow 0.22s var(--mel-ease);
}
.mel-card:hover, .mel-card:focus-within {
  transform: translateY(-5px);
  border-color: rgba(53, 224, 224, 0.45);
  box-shadow: 0 22px 44px rgba(4, 8, 24, 0.55);
}
.mel-card__title { font-size: 20px; font-weight: 500; line-height: 1.35; }
.mel-card__meta {
  margin-top: 8px;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mel-muted);
}
.mel-card__body { margin-top: 12px; font-size: 15px; color: #BCC7E6; }

.mel-note {
  border-left: 2px solid var(--mel-cyan);
  padding: 4px 0 4px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: #B4BFDF;
  max-width: 34em;
}
.mel-list { display: grid; gap: 2px; }
.mel-list__item {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(124, 137, 180, 0.16);
}
.mel-list__num {
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mel-cyan);
  min-width: 34px;
}
.mel-kpi__value {
  font-family: var(--mel-font-mono);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--mel-amber);
}
.mel-kpi__label {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mel-muted);
  font-family: var(--mel-font-mono);
}

/* ---------- 面包屑 ---------- */
.mel-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-block: 18px 0;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mel-muted);
}
.mel-breadcrumb__sep { color: rgba(124, 137, 180, 0.6); }
.mel-breadcrumb a:hover { color: var(--mel-cyan); }

/* ---------- 图像容器（页面阶段放图） ---------- */
.mel-media {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: clamp(18px, 2.6vw, 28px);
  background: linear-gradient(140deg, var(--mel-violet), var(--mel-teal));
  border: 1px solid rgba(124, 137, 180, 0.28);
}
.mel-media__img { width: 100%; height: 100%; object-fit: cover; }
.mel-media__ph {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-height: 160px;
  padding: 20px;
  text-align: center;
  font-family: var(--mel-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(244, 247, 255, 0.6);
}
.mel-media--21x9 { aspect-ratio: 21 / 9; }
.mel-media--16x9 { aspect-ratio: 16 / 9; }
.mel-media--3x2 { aspect-ratio: 3 / 2; }
.mel-media--4x3 { aspect-ratio: 4 / 3; }
.mel-media--1x1 { aspect-ratio: 1 / 1; }
.mel-media--3x4 { aspect-ratio: 3 / 4; }
.mel-media--tilt { transform: rotate(-1.4deg); }
.mel-media--tilt-r { transform: rotate(1.4deg); }
.mel-media--shade::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 18, 51, 0) 45%, rgba(11, 18, 51, 0.72));
}
.mel-media__cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mel-paper);
}

/* ---------- 显现 ---------- */
.mel-reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--mel-ease), transform 0.5s var(--mel-ease);
}
.mel-reveal[data-reveal="in"] { opacity: 1; transform: none; }

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

/* =========================================================
   头部：紧凑命令栏
   ========================================================= */
.mel-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(11, 18, 51, 0.94);
  border-bottom: 1px solid rgba(124, 137, 180, 0.24);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.mel-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: rgba(124, 137, 180, 0.18);
  overflow: hidden;
}
.mel-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--mel-orange), var(--mel-cyan));
  transition: transform 0.12s linear;
}
.mel-skip {
  position: absolute;
  left: 16px;
  top: -70px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: 0 0 16px 16px;
  background: var(--mel-amber);
  color: #0B1233;
  font-size: 14px;
  font-weight: 600;
  transition: top 0.18s var(--mel-ease);
}
.mel-skip:focus { top: 0; }

.mel-header__bar {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 24px);
  min-height: 64px;
  padding-block: 10px;
  flex-wrap: wrap;
}

/* 品牌署名 */
.mel-brand {
  order: 1;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 4px;
  border-radius: 16px;
  flex: 0 0 auto;
}
.mel-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(140deg, var(--mel-orange), var(--mel-magenta));
  color: #0B1233;
  font-family: var(--mel-font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.mel-brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.mel-brand__line { font-size: 14px; font-weight: 600; letter-spacing: 0.02em; white-space: nowrap; }
.mel-brand__sub {
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mel-muted);
  white-space: nowrap;
}

/* 导航 */
.mel-nav { order: 2; flex: 1 1 auto; display: flex; justify-content: center; }
.mel-nav__list { display: flex; align-items: center; gap: 2px; }
.mel-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  color: #C3CCE8;
  white-space: nowrap;
  transition: background-color 0.2s var(--mel-ease), color 0.2s var(--mel-ease), transform 0.2s var(--mel-ease);
}
.mel-nav__index {
  font-family: var(--mel-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mel-muted);
  transition: color 0.2s var(--mel-ease);
}
.mel-nav__link:hover { background: rgba(53, 224, 224, 0.12); color: var(--mel-paper); transform: translateY(-2px); }
.mel-nav__link[aria-current="page"] { background: var(--mel-orange); color: #0B1233; font-weight: 600; }
.mel-nav__link[aria-current="page"] .mel-nav__index { color: rgba(11, 18, 51, 0.72); }
.mel-nav__foot { display: none; }

/* 命令区：状态 + 快捷胶囊 */
.mel-command {
  order: 3;
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}
.mel-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--mel-line);
  border-radius: 999px;
  font-family: var(--mel-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mel-muted);
  white-space: nowrap;
}
.mel-status__value { color: var(--mel-cyan); }
.mel-status__sep { color: rgba(124, 137, 180, 0.6); }
.mel-status__count { color: var(--mel-amber); }
.mel-utility { display: flex; gap: 8px; }

/* 移动导航按钮 */
.mel-nav-toggle {
  order: 4;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--mel-line);
  color: var(--mel-paper);
  font-size: 13px;
}
.mel-nav-toggle__label { font-family: var(--mel-font-mono); font-size: 12px; letter-spacing: 0.12em; }
.mel-nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.mel-nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--mel-cyan);
  transition: transform 0.2s var(--mel-ease), opacity 0.2s var(--mel-ease);
}
.mel-nav-toggle[aria-expanded="true"] .mel-nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mel-nav-toggle[aria-expanded="true"] .mel-nav-toggle__bars i:nth-child(2) { opacity: 0; }
.mel-nav-toggle[aria-expanded="true"] .mel-nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 中屏及以下：命令栏折叠为层叠导航面板 */
@media (max-width: 1120px) {
  .mel-nav-toggle { display: inline-flex; margin-left: 12px; }
  .mel-command { margin-left: auto; }
  .mel-utility { display: none; }
  .mel-nav {
    order: 5;
    flex: 0 0 auto;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    padding: 14px clamp(16px, 4vw, 40px) 20px;
    background: #0C1436;
    border-bottom: 1px solid var(--mel-line);
    border-radius: 0 0 28px 28px;
    box-shadow: 0 26px 52px rgba(3, 6, 20, 0.55);
    max-height: min(74vh, 560px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.22s var(--mel-ease), transform 0.22s var(--mel-ease), visibility 0.22s var(--mel-ease);
  }
  .mel-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }
  .mel-nav__list { flex-direction: column; align-items: stretch; gap: 6px; }
  .mel-nav__link {
    justify-content: flex-start;
    padding: 13px 16px;
    border-radius: 16px;
    font-size: 16px;
    background: rgba(21, 30, 69, 0.7);
  }
  .mel-nav__link:hover { transform: none; }
  .mel-nav__foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px dashed var(--mel-line);
  }
  .mel-nav__footline { font-size: 13px; color: #B4BFDF; }
  .mel-nav__footlink {
    font-family: var(--mel-font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--mel-amber);
    border-bottom: 1px dashed rgba(255, 194, 75, 0.5);
    padding-bottom: 2px;
  }
  .mel-nav__footlink:hover { color: var(--mel-orange); }
}
@media (max-width: 640px) {
  .mel-brand__sub { display: none; }
  .mel-brand__line { font-size: 13px; }
}
@media (max-width: 560px) {
  .mel-status { display: none; }
}

/* =========================================================
   页脚：层叠目录 + 编号与合规行
   ========================================================= */
.mel-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: linear-gradient(180deg, #0A1030 0%, #0B2B30 58%, #0A1029 100%);
  border-top: 1px solid var(--mel-line);
}
.mel-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(320px, 50%);
  height: 2px;
  background: linear-gradient(90deg, var(--mel-orange), transparent);
}
.mel-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 0.9fr 1.5fr;
  gap: clamp(20px, 3vw, 40px);
  padding-block: clamp(36px, 6vw, 64px);
}
.mel-footer__mark { font-size: 16px; font-weight: 600; letter-spacing: 0.02em; }
.mel-footer__desc { margin-top: 10px; font-size: 14px; line-height: 1.7; color: #B9C4E4; max-width: 32ch; }
.mel-footer__id {
  margin-top: 16px;
  margin-bottom: 12px;
  font-size: 22px;
  color: var(--mel-amber);
}
.mel-footer__title {
  margin-bottom: 14px;
  font-family: var(--mel-font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mel-cyan);
}
.mel-footer__links { display: grid; gap: 10px; }
.mel-footer__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: #C3CCE8;
  transition: color 0.2s var(--mel-ease), transform 0.2s var(--mel-ease);
}
.mel-footer__link i {
  font-style: normal;
  font-family: var(--mel-font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mel-muted);
}
.mel-footer__link:hover { color: var(--mel-orange); transform: translateX(4px); }
.mel-footer__contact { display: grid; gap: 10px; }
.mel-footer__note { font-size: 13px; line-height: 1.75; color: #A7B2D4; }
.mel-footer__note .mel-mono { color: var(--mel-paper); }
.mel-footer__actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.mel-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 20px 30px;
  border-top: 1px solid var(--mel-line);
  font-size: 12px;
  color: var(--mel-muted);
}
.mel-footer__legal-line { max-width: 62ch; line-height: 1.7; }
.mel-footer__meta { display: flex; flex-wrap: wrap; gap: 8px 20px; font-family: var(--mel-font-mono); letter-spacing: 0.06em; }

@media (max-width: 980px) {
  .mel-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .mel-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .mel-footer__legal { flex-direction: column; align-items: flex-start; }
}

/* ---------- 动效降级 ---------- */
@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;
  }
  .mel-reveal { opacity: 1; transform: none; }
  .mel-media--tilt, .mel-media--tilt-r { transform: none; }
}