/* ==========================================================================
   聚星中心 · 共享样式 /assets/site.css
   坐标体系：深空蓝基底 · 蓝图线结构 · 星芒金锚点 · 电光紫与极光青反馈
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 150px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol, pre {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }

img, svg, video { 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%; }

/* --------------------------------------------------------- 2. 变量 */
:root {
  --ink: #0A1330;
  --ink-2: #101C42;
  --line: #2A3A6B;
  --gold: #F5C24B;
  --violet: #7B5CFF;
  --cyan: #43E0C8;
  --star: #F2F5FF;
  --muted: #8E9AB8;
  --paper: #F6F7FB;
  --warn: #FF7A45;
  --violet-deep: #4A2FD6;

  --shell: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --bd: 2px;

  --font-sans: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-narrow: "Archivo Narrow", "Oswald", "Arial Narrow", "Helvetica Neue", var(--font-sans);
  --font-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;
}

/* --------------------------------------------------------- 3. 基础排版 */
body {
  min-height: 100vh;
  background-color: var(--ink);
  color: var(--star);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-narrow);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(40px, 6vw, 84px); }
h2 { font-size: clamp(32px, 4.2vw, 52px); }
h3 { font-size: clamp(22px, 2.6vw, 30px); }

strong { font-weight: 900; }

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

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

/* --------------------------------------------------------- 4. 布局容器 */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section {
  padding-block: clamp(48px, 7vw, 104px);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

/* --------------------------------------------------------- 5. 跳转链接 */
.skip-link {
  position: absolute;
  left: 16px;
  top: -90px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border: var(--bd) solid var(--ink);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.55);
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 14px;
}

/* --------------------------------------------------------- 6. 报头 */
.masthead {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink);
  border-bottom: var(--bd) solid var(--line);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45);
}

.masthead__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 58, 107, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 58, 107, 0.34) 1px, transparent 1px);
  background-size: 56px 56px, 56px 56px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 82%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 82%);
  opacity: 0.5;
}

.masthead__inner {
  position: relative;
  z-index: 1;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--gold) 70%, var(--violet) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  z-index: 120;
}

.masthead__bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding-block: 14px 12px;
  border-bottom: 1px solid rgba(42, 58, 107, 0.75);
}

.masthead__coord {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  white-space: nowrap;
}

.masthead__brand {
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.masthead__brand-cn {
  font-family: var(--font-narrow);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
  color: var(--star);
  transition: color 0.16s ease;
}

.masthead__brand-en {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: var(--muted);
  white-space: nowrap;
}

.masthead__brand:hover .masthead__brand-cn { color: var(--gold); }

.masthead__meta {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 12px;
}

.masthead__version {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
}

/* ------------------------------------------- 6.1 服务清单快捷入口 */
.quicklist { position: relative; }

.quicklist__toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  background: var(--ink-2);
  border: var(--bd) solid var(--line);
  color: var(--star);
  font-size: 13px;
  letter-spacing: 0.08em;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.45);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.quicklist__toggle:hover {
  border-color: var(--gold);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.55);
  transform: translate(-1px, -1px);
}

.quicklist__toggle[aria-expanded="true"] {
  border-color: var(--gold);
  color: var(--gold);
}

.quicklist__icon {
  width: 8px;
  height: 8px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(245, 194, 75, 0.18);
}

.quicklist__count {
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 16px;
  padding-inline: 5px;
  background: var(--gold);
  color: var(--ink);
}

.quicklist__panel {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  width: 264px;
  padding: 14px;
  background: var(--ink-2);
  border: var(--bd) solid var(--gold);
  box-shadow: 7px 7px 0 rgba(0, 0, 0, 0.6);
  z-index: 100;
}

.quicklist__panel[hidden] { display: none; }

.quicklist__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 8px;
}

.quicklist__list { border-top: 1px solid rgba(42, 58, 107, 0.8); }

.quicklist__item {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 4px;
  font-size: 14px;
  color: var(--star);
  border-bottom: 1px solid rgba(42, 58, 107, 0.8);
  transition: color 0.16s ease, background-color 0.16s ease, padding-left 0.16s ease;
}

.quicklist__item:hover {
  color: var(--gold);
  background: rgba(42, 58, 107, 0.4);
  padding-left: 8px;
}

.quicklist__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

.quicklist__all {
  display: block;
  margin-top: 11px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.quicklist__all:hover { color: var(--star); }

/* ------------------------------------------- 6.2 栏目坐标带 */
.masthead__navrow {
  position: relative;
  display: flex;
  justify-content: center;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 13px 4px;
  color: var(--star);
  font-size: 13px;
  letter-spacing: 0.14em;
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 20px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--gold);
}

.nav-toggle__bars i:nth-child(2) { width: 68%; }
.nav-toggle__bars i:nth-child(3) { width: 86%; }

.nav-toggle__text { flex: 1 1 auto; text-align: left; }

.nav-toggle__sign {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
  transition: transform 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__sign { transform: rotate(45deg); }

.nav { display: block; }

.nav__list {
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.nav__item { display: flex; }

.nav__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px clamp(10px, 2vw, 26px) 14px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color 0.16s ease, background-color 0.16s ease;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 0;
  height: 3px;
  background: var(--gold);
  transition: left 0.2s ease, right 0.2s ease;
}

.nav__link:hover {
  color: var(--star);
  background: rgba(42, 58, 107, 0.32);
}

.nav__link:hover::after {
  left: 14%;
  right: 14%;
}

.nav__link[aria-current="page"] {
  color: var(--star);
  background: rgba(42, 58, 107, 0.5);
}

.nav__link[aria-current="page"]::after {
  left: 0;
  right: 0;
}

.nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

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

.nav__label { white-space: nowrap; }

/* ------------------------------------------- 6.3 滚动收窄态 */
html[data-condensed="true"] .masthead__bar { padding-block: 8px 7px; }
html[data-condensed="true"] .masthead__brand-cn { font-size: 20px; }
html[data-condensed="true"] .masthead__brand-en { display: none; }
html[data-condensed="true"] .masthead__coord { display: none; }
html[data-condensed="true"] .masthead__grid { opacity: 0.25; }
html[data-condensed="true"] .nav__link { padding-block: 10px 9px; }

/* --------------------------------------------------------- 7. 页脚 */
.site-footer {
  position: relative;
  margin-top: clamp(64px, 9vw, 132px);
  background: var(--ink-2);
  border-top: var(--bd) solid var(--line);
  color: var(--muted);
}

.footer__scale {
  position: relative;
  height: 24px;
  background:
    linear-gradient(to right, rgba(42, 58, 107, 0.9), rgba(42, 58, 107, 0.1)) bottom left / 100% 1px no-repeat;
}

.footer__scale::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 11px;
  background-image: repeating-linear-gradient(to right, rgba(42, 58, 107, 1) 0 1px, transparent 1px 20px);
  opacity: 0.9;
}

.footer__scale::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 8px;
  height: 2px;
  background-image: repeating-linear-gradient(to right, rgba(245, 194, 75, 0.85) 0 2px, transparent 2px 160px);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1fr 1.35fr;
  gap: clamp(24px, 4vw, 64px);
  padding-block: clamp(36px, 5vw, 64px) clamp(24px, 3vw, 36px);
}

.footer__col { min-width: 0; }

.footer__brand {
  font-family: var(--font-narrow);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.2em;
  color: var(--star);
  line-height: 1.2;
}

.footer__claim {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--star);
}

.footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 14px;
}

.footer__list { display: flex; flex-direction: column; gap: 2px; }

.footer__link {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--muted);
  transition: color 0.16s ease, transform 0.16s ease;
}

.footer__link:hover {
  color: var(--star);
  transform: translateX(4px);
}

.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__contact li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--star);
  word-break: break-word;
}

.footer__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  margin-bottom: 2px;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 16px 26px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer__legal { color: var(--muted); }
.footer__sig { color: var(--line); }

/* --------------------------------------------------------- 8. 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  background: var(--gold);
  border: var(--bd) solid var(--gold);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 4px 4px 0 rgba(123, 92, 255, 0.55);
  transition: transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(123, 92, 255, 0.65);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 rgba(123, 92, 255, 0.45);
}

.btn--ghost {
  background: transparent;
  color: var(--star);
  border-color: var(--line);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.5);
}

.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------------- 9. 面包屑 */
.breadcrumb { padding-block: 22px 0; }

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.breadcrumb li + li::before {
  content: "／";
  color: var(--line);
}

.breadcrumb a { color: var(--muted); transition: color 0.16s ease; }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb [aria-current="page"] { color: var(--star); }

/* --------------------------------------------------------- 10. 正文容器 */
.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--star);
}

.prose > * + * { margin-top: 1.1em; }

.prose h2 {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.16;
  margin-top: 1.9em;
}

.prose h3 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.35;
  margin-top: 1.6em;
}

.prose ul,
.prose ol { padding-left: 1.35em; }

.prose ul { list-style: none; }

.prose ul li {
  position: relative;
  padding-left: 0.9em;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 8px;
  height: 2px;
  background: var(--cyan);
}

.prose ol { list-style: decimal; }
.prose ol li::marker { color: var(--gold); font-family: var(--font-mono); }
.prose li + li { margin-top: 0.5em; }

.prose strong { color: #FFFFFF; }

.prose a {
  color: var(--gold);
  border-bottom: 2px solid rgba(245, 194, 75, 0.38);
  transition: border-color 0.16s ease, color 0.16s ease;
}

.prose a:hover { border-bottom-color: var(--gold); color: #FFFFFF; }

.prose blockquote {
  border-left: 4px solid var(--violet);
  padding-left: 20px;
  color: var(--muted);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.14em 0.42em;
  background: rgba(42, 58, 107, 0.55);
  color: var(--cyan);
}

.prose--paper {
  max-width: none;
  background: var(--paper);
  color: var(--ink);
  padding: clamp(24px, 4vw, 56px);
  border: var(--bd) solid var(--line);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.4);
}

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

.prose--paper ul li::before { background: var(--violet-deep); }
.prose--paper a { color: var(--violet-deep); border-bottom-color: rgba(74, 47, 214, 0.35); }
.prose--paper a:hover { color: var(--ink); border-bottom-color: var(--violet-deep); }
.prose--paper code { background: rgba(42, 58, 107, 0.12); color: var(--violet-deep); }
.prose--paper blockquote { color: #4A5578; border-left-color: var(--violet-deep); }

/* --------------------------------------------------------- 11. 网格 */
.bp-grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}

.bp-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.bp-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.bp-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bp-grid--7-5 { grid-template-columns: 7fr 5fr; }
.bp-grid--8-4 { grid-template-columns: 8fr 4fr; }

/* --------------------------------------------------------- 12. 图片容器 */
.frame {
  position: relative;
  display: block;
  width: 100%;
  background: var(--ink-2);
  border: var(--bd) solid var(--line);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

.frame img,
.frame svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame--16-9 { aspect-ratio: 16 / 9; }
.frame--4-3  { aspect-ratio: 4 / 3; }
.frame--1-1  { aspect-ratio: 1 / 1; }
.frame--3-4  { aspect-ratio: 3 / 4; }

.frame--grid::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 58, 107, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 58, 107, 0.45) 1px, transparent 1px);
  background-size: 32px 32px;
}

.frame--accent { border-color: var(--gold); }

/* --------------------------------------------------------- 13. 响应式 */
@media (max-width: 1080px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bp-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .bp-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bp-grid--7-5,
  .bp-grid--8-4 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 130px; }

  .masthead__bar {
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
    gap: 8px;
    padding-block: 13px 11px;
  }

  .masthead__coord { display: none; }
  .masthead__brand { justify-self: center; }
  .masthead__meta { justify-self: center; }
  .masthead__version { display: none; }

  .masthead__navrow { display: block; }

  .nav-toggle { display: flex; }

  .nav { display: none; }

  .nav[data-open="true"] {
    display: block;
    padding-bottom: 14px;
    border-top: 1px solid rgba(42, 58, 107, 0.75);
  }

  .nav[data-open="false"] { display: none; }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  .nav__item { display: block; }

  .nav__link {
    justify-content: flex-start;
    padding: 13px 8px;
    font-size: 15px;
    border-bottom: 1px solid rgba(42, 58, 107, 0.55);
  }

  .nav__link::after { display: none; }

  .nav__link[aria-current="page"] {
    border-left: 4px solid var(--gold);
    padding-left: 14px;
  }

  .nav__link:hover { background: rgba(42, 58, 107, 0.42); }
  .nav__link:hover::after { display: none; }

  html[data-condensed="true"] .nav__link { padding-block: 13px; }

  .quicklist__panel {
    right: 50%;
    transform: translateX(50%);
    width: min(300px, calc(100vw - 32px));
  }
}

@media (max-width: 760px) {
  .bp-grid--2,
  .bp-grid--3,
  .bp-grid--4 { grid-template-columns: minmax(0, 1fr); }

  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .footer__bottom { justify-content: flex-start; }
}

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

/* --------------------------------------------------------- 14. 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;
  }

  .btn:hover,
  .quicklist__toggle:hover,
  .footer__link:hover { transform: none; }
}