/* ==========================================================================
   得胜28品牌 · 共享样式 /assets/site.css
   夜间控制台 × 认证印章 · 左侧轨道分屏 · 粗野主义边框
   ========================================================================== */

/* 1. 变量 */
:root {
  --ink: #0A1826;
  --panel: #102A3E;
  --steel: #17384F;
  --cyan: #00E3CE;
  --orange: #FF8A3D;
  --silver: #E8EFF5;
  --mist: #9DB0C0;
  --line: #C4D3DF;
  --violet: #241B4A;
  --paper: #F2F5F8;

  --rail-w: 84px;
  --topbar-h: 62px;

  --font-display: "MiSans Condensed", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --border: 3px solid var(--line);
  --shadow: 8px 8px 0 rgba(6, 16, 27, 0.55);
  --shadow-lift: 12px 12px 0 rgba(6, 16, 27, 0.62);
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
  --hair: rgba(196, 211, 223, 0.18);
}

/* 2. Reset */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ink);
  color: var(--silver);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

:where(a, button, [tabindex], input, select, summary):focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

/* 3. 底座布局 */
@media (min-width: 900px) {
  body { padding-left: var(--rail-w); }
}
@media (max-width: 899px) {
  body { padding-top: var(--topbar-h); }
}

.container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 56px);
}

.section { padding-block: clamp(40px, 6vw, 84px); }

.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  margin-bottom: clamp(20px, 3vw, 36px);
}

.grid { display: grid; gap: clamp(18px, 2.4vw, 32px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* 4. 通用文本件 */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.lead {
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: #CBD8E3;
  max-width: 38em;
}

.rule {
  height: 1px;
  border: 0;
  margin-block: clamp(24px, 4vw, 48px);
  background: var(--hair);
}

.ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(40px, 7vw, 88px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(196, 211, 223, 0.4);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}
.tag--cyan { border-color: rgba(0, 227, 206, 0.55); color: var(--cyan); }
.tag--orange { border-color: rgba(255, 138, 61, 0.55); color: var(--orange); }

/* 5. 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 12px 20px;
  border: 3px solid var(--line);
  background: transparent;
  color: var(--silver);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 4px 4px 0 rgba(6, 16, 27, 0.45);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
              border-color 0.18s var(--ease), color 0.18s var(--ease),
              background-color 0.18s var(--ease);
}
.btn:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 8px 8px 0 rgba(6, 16, 27, 0.55);
}
.btn--solid { background: var(--cyan); border-color: var(--cyan); color: #04222B; }
.btn--solid:hover { background: #3AF2E1; border-color: #3AF2E1; color: #04222B; }
.btn--accent { background: var(--orange); border-color: var(--orange); color: #2A1004; }
.btn--accent:hover { background: #FFA367; border-color: #FFA367; color: #2A1004; }
.btn--ghost { background: rgba(16, 42, 62, 0.6); }

/* 6. 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.crumbs__link {
  color: var(--mist);
  border-bottom: 1px solid rgba(196, 211, 223, 0.35);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.crumbs__link:hover { color: var(--cyan); border-color: var(--cyan); }
.crumbs__sep { color: rgba(196, 211, 223, 0.38); }
.crumbs__current { color: var(--cyan); }

/* 7. 专题研究板 */
.board {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--panel);
  border: var(--border);
  box-shadow: var(--shadow);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
              border-color 0.18s var(--ease);
}
.board:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-lift);
}
.board--violet { background: var(--violet); border-color: rgba(196, 211, 223, 0.45); }
.board__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
  margin-bottom: 10px;
}
.board__title {
  font-size: clamp(20px, 2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.board__summary {
  margin-top: 10px;
  max-width: 36em;
  font-size: 15px;
  color: var(--mist);
}
.board__evidence {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  display: grid;
  gap: 8px;
}
.board__term {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.board__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 227, 206, 0.45);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.board__more:hover { color: var(--orange); border-color: var(--orange); }

/* 8. 图片容器 */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: var(--border);
  background: var(--steel);
  box-shadow: var(--shadow);
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--portrait { aspect-ratio: 3 / 4; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--placeholder {
  background-image: repeating-linear-gradient(
    135deg,
    rgba(196, 211, 223, 0.08) 0 8px,
    transparent 8px 16px
  );
}
.media-frame > img,
.media-frame > svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    155deg,
    rgba(0, 227, 206, 0.16),
    transparent 45%,
    rgba(10, 24, 38, 0.55)
  );
}
.media-frame__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 9. 跳过链接 */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--cyan);
  color: #04222B;
  font-weight: 700;
  font-size: 14px;
  border: 3px solid var(--ink);
  transform: translateY(-220%);
  transition: transform 0.18s var(--ease);
}
.skip-link:focus { transform: translateY(0); }

/* 10. 头部 · 桌面左侧轨道 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 0 22px;
  background: var(--ink);
  border-right: var(--border);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.site-header::-webkit-scrollbar { display: none; }

/* 滚动进度条 */
.scroll-meter {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  z-index: 120;
  background: rgba(196, 211, 223, 0.12);
  pointer-events: none;
}
.scroll-meter__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

/* 品牌 */
.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
}
.rail-brand { padding-top: 4px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 3px solid var(--cyan);
  background: linear-gradient(140deg, rgba(0, 227, 206, 0.18), transparent 70%);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  box-shadow: 4px 4px 0 rgba(6, 16, 27, 0.55);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.brand:hover .brand-mark {
  transform: translateY(-4px);
  box-shadow: 7px 7px 0 rgba(6, 16, 27, 0.6);
}
.brand-name {
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--silver);
}

/* 版本徽标 */
.version-badge {
  margin-top: 14px;
  padding: 5px 5px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border: 1px solid rgba(0, 227, 206, 0.55);
  background: rgba(0, 227, 206, 0.06);
}

/* 移动端开关（桌面隐藏） */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 3px solid var(--line);
  color: var(--silver);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s var(--ease), opacity 0.18s var(--ease);
}
.site-header[data-open] .nav-toggle__bars span:first-child {
  transform: translateY(3px) rotate(45deg);
}
.site-header[data-open] .nav-toggle__bars span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* 导航 · 竖排轨道 */
.site-nav {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  padding-top: 16px;
}
.site-nav__list { display: flex; flex-direction: column; width: 100%; }
.site-nav__item { width: 100%; }
.site-nav__link {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 15px 4px;
  transition: background-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.18s var(--ease);
}
.nav-label {
  writing-mode: vertical-rl;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.16em;
  color: var(--silver);
  transition: color 0.18s var(--ease);
}
.site-nav__link:hover { background: var(--panel); }
.site-nav__link:hover .nav-label,
.site-nav__link:hover .nav-index { color: var(--cyan); }
.site-nav__link[aria-current="page"] {
  background: var(--steel);
  box-shadow: inset -3px 0 0 var(--cyan);
}
.site-nav__link[aria-current="page"] .nav-label {
  color: var(--cyan);
  font-weight: 800;
}
.site-nav__link[aria-current="page"] .nav-index { color: var(--orange); }

/* 抽屉内的法律链接（桌面隐藏） */
.drawer-legal { display: none; }
.drawer-legal__link { display: block; }

/* 轨道快捷入口 */
.rail-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  padding: 9px 10px;
  writing-mode: vertical-rl;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--orange);
  border: 3px solid var(--orange);
  background: rgba(255, 138, 61, 0.09);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
              background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.rail-cta:hover {
  transform: translateY(-4px);
  background: var(--orange);
  color: #2A1004;
  box-shadow: 0 8px 0 rgba(6, 16, 27, 0.5);
}
.rail-cta__arrow { font-size: 12px; }

/* 11. 头部 · 移动端顶栏与抽屉 */
@media (max-width: 899px) {
  .site-header {
    top: 0;
    right: 0;
    bottom: auto;
    left: 0;
    width: auto;
    height: var(--topbar-h);
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding: 0 14px;
    border-right: 0;
    border-bottom: var(--border);
    overflow: visible;
  }
  .scroll-meter { left: 0; }

  .rail-brand { order: 1; flex-direction: row; padding-top: 0; gap: 8px; }
  .brand-mark { width: 34px; height: 34px; font-size: 14px; border-width: 2px; }
  .brand-name {
    writing-mode: horizontal-tb;
    font-size: 13px;
    letter-spacing: 0.12em;
  }
  .version-badge {
    order: 2;
    margin-top: 0;
    writing-mode: horizontal-tb;
    font-size: 10px;
    padding: 3px 6px;
  }
  .rail-cta {
    order: 3;
    margin-top: 0;
    margin-left: auto;
    writing-mode: horizontal-tb;
    padding: 6px 9px;
    font-size: 11px;
    border-width: 2px;
    letter-spacing: 0.1em;
  }
  .nav-toggle { order: 4; display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: auto;
    width: min(340px, 88vw);
    margin: 0;
    padding: 78px 20px 28px;
    background: var(--panel);
    border-left: 3px solid var(--cyan);
    box-shadow: -18px 0 44px rgba(4, 12, 20, 0.6);
    transform: translateX(105%);
    visibility: hidden;
    overflow-y: auto;
    z-index: 85;
    transition: transform 0.18s var(--ease), visibility 0.18s var(--ease);
  }
  .site-header[data-open] .site-nav {
    transform: translateX(0);
    visibility: visible;
  }

  .site-nav__list { padding-top: 4px; }
  .site-nav__link {
    flex-direction: row;
    justify-content: flex-start;
    gap: 14px;
    padding: 14px 12px;
    border-bottom: 1px solid var(--hair);
  }
  .nav-label {
    writing-mode: horizontal-tb;
    font-size: 16px;
    letter-spacing: 0.05em;
  }
  .nav-index { font-size: 12px; }
  .site-nav__link[aria-current="page"] {
    box-shadow: inset 3px 0 0 var(--cyan);
  }

  .drawer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    margin-top: 26px;
    padding-top: 18px;
    border-top: 1px solid var(--hair);
  }
  .drawer-legal__link {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--mist);
    border-bottom: 1px solid rgba(196, 211, 223, 0.32);
  }
  .drawer-legal__link:hover { color: var(--cyan); border-color: var(--cyan); }
}

/* 12. 页脚 */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  background: var(--panel);
  border-top: var(--border);
  color: var(--silver);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 128px;
  height: 3px;
  background: var(--cyan);
}

.footer-inner {
  max-width: 1180px;
  margin-inline: auto;
  padding: clamp(34px, 5vw, 64px) clamp(18px, 4vw, 56px) clamp(28px, 4vw, 42px);
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.3fr 1fr;
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}
.footer-inner > * + * {
  border-left: 1px solid var(--hair);
  padding-left: clamp(16px, 2vw, 28px);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.26em;
  color: var(--cyan);
  margin-bottom: 14px;
}

.footer-block--brand .footer-brand {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}
.footer-brand .brand-name {
  writing-mode: horizontal-tb;
  font-size: 15px;
  letter-spacing: 0.12em;
}
.version-badge--footer {
  display: inline-block;
  margin-top: 16px;
  writing-mode: horizontal-tb;
  font-size: 11px;
  letter-spacing: 0.16em;
  padding: 4px 8px;
}
.footer-tagline {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.footer-nav__list { display: grid; gap: 9px; }
.footer-nav__link {
  display: inline-block;
  font-size: 14px;
  color: var(--silver);
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.footer-nav__link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.contact-list { display: grid; gap: 10px; }
.contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
}
.contact-key {
  min-width: 38px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.contact-value {
  font-size: 14px;
  color: var(--silver);
  word-break: break-all;
}
.copy-btn {
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border: 1px solid rgba(0, 227, 206, 0.5);
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease);
}
.copy-btn:hover { background: var(--cyan); color: #04222B; }
.footer-note {
  margin-top: 16px;
  max-width: 30em;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.legal-list { display: grid; gap: 9px; }
.legal-link {
  display: inline-block;
  font-size: 14px;
  color: var(--silver);
  border-bottom: 1px dashed rgba(196, 211, 223, 0.45);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.legal-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }
.footer-meta {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--mist);
}
.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--silver);
  border: 1px solid rgba(196, 211, 223, 0.4);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease),
              color 0.18s var(--ease);
}
.to-top:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 13. 响应式 */
@media (max-width: 1080px) {
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-inner > * + * { border-left: 0; padding-left: 0; }
  .footer-inner > *:nth-child(even) {
    border-left: 1px solid var(--hair);
    padding-left: clamp(16px, 2vw, 28px);
  }
}

@media (max-width: 900px) {
  .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .grid--12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-inner > *:nth-child(even) {
    border-left: 0;
    padding-left: 0;
  }
  .footer-inner > * + * {
    border-top: 1px solid var(--hair);
    padding-top: clamp(20px, 3vw, 28px);
  }
  .grid--12 { grid-template-columns: minmax(0, 1fr); }
  .board { box-shadow: 6px 6px 0 rgba(6, 16, 27, 0.55); }
  .media-frame { box-shadow: 6px 6px 0 rgba(6, 16, 27, 0.55); }
}

/* 14. 降低动态效果 */
@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;
  }
  .btn:hover,
  .board:hover,
  .rail-cta:hover,
  .to-top:hover,
  .brand:hover .brand-mark { transform: none; }
}