/* ===========================================================
   BEPLAY 官方矩阵 · 共享样式 /assets/site.css
   =========================================================== */

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

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

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

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

img, svg, video, canvas { display: block; max-width: 100%; }

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

a { color: inherit; }

/* ---------- 2. Tokens ---------- */
:root {
  /* 色彩 */
  --ink-0: #050A16;
  --ink-1: #0A1428;
  --ink-2: #101F3C;
  --ink-3: #1B3055;
  --ink-4: #2E4E7E;
  --mist: #7FA6C9;
  --white: #E6F1F8;
  --cyan: #2FF0D6;
  --cyan-deep: #0C2A2E;
  --orange: #FF7A2F;

  /* 字体 */
  --font-sans: "HarmonyOS Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;

  /* 尺寸 */
  --rail-w: 268px;
  --rail-h: 0px;
  --radius-s: 12px;
  --radius-m: 20px;
  --radius-l: 28px;
  --radius-pill: 999px;

  /* 线条与发光 */
  --line: rgba(46, 78, 126, 0.5);
  --line-soft: rgba(46, 78, 126, 0.28);
  --glow-cyan: rgba(47, 240, 214, 0.3);

  /* 缓动 */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 3. 基础排版 ---------- */
html, body { background-color: var(--ink-0); }

body {
  min-height: 100vh;
  padding-inline-start: var(--rail-w);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--white);
  background-color: var(--ink-0);
  background-image:
    radial-gradient(960px 600px at 86% -12%, rgba(47, 240, 214, 0.10), transparent 62%),
    radial-gradient(760px 520px at 4% 106%, rgba(255, 122, 47, 0.07), transparent 64%),
    linear-gradient(rgba(46, 78, 126, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 78, 126, 0.10) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  -webkit-font-smoothing: antialiased;
  transition: padding-inline-start 0.2s var(--ease);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
  text-wrap: balance;
}

h1 { font-size: clamp(40px, 6vw, 76px); }
h2 { font-size: clamp(28px, 3.4vw, 39px); }
h3 { font-size: clamp(20px, 2.2vw, 25px); font-weight: 700; }
h4 { font-size: 17px; font-weight: 700; letter-spacing: 0.01em; }

strong { font-weight: 700; color: var(--white); }

::selection {
  background: rgba(47, 240, 214, 0.28);
  color: var(--white);
}

/* 焦点可见 */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 滚动锁（移动抽屉打开时） */
html.nav-locked { overflow: hidden; }
html.nav-locked body { overflow: hidden; }

/* ---------- 4. 工具类 ---------- */
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  font-size: 0.94em;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. Skip link ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  inset-inline-start: calc(var(--rail-w) + 14px);
  z-index: 200;
  transform: translateY(-180%);
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--cyan);
  color: #04120F;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.24s var(--ease);
}

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

/* ---------- 6. Header / 侧边轨道 ---------- */
.site-header {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  z-index: 60;
  width: var(--rail-w);
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 3vh, 30px);
  padding: clamp(20px, 3vh, 32px) 18px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: linear-gradient(180deg, #08111E 0%, #060C18 52%, var(--ink-0) 100%);
  border-inline-end: 1px solid var(--line-soft);
}

.site-header::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 2px;
  pointer-events: none;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(47, 240, 214, 0.55) 16%,
    rgba(47, 240, 214, 0.12) 58%,
    transparent 100%);
}

/* 品牌区 */
.rail-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  width: max-content;
  text-decoration: none;
}

.brand__mark {
  font-size: clamp(22px, 2vw, 26px);
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1;
  color: var(--white);
  text-shadow: 0 0 26px rgba(47, 240, 214, 0.26);
  transition: color 0.25s var(--ease), text-shadow 0.25s var(--ease);
}

.brand:hover .brand__mark {
  color: var(--cyan);
  text-shadow: 0 0 32px rgba(47, 240, 214, 0.55);
}

.brand__suffix {
  padding-inline-start: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--mist);
}

.rail-tagline {
  max-width: 16em;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--mist);
  opacity: 0.72;
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0.08em;
  background: rgba(16, 31, 60, 0.5);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.nav-toggle:hover {
  border-color: var(--glow-cyan);
  background: rgba(47, 240, 214, 0.08);
}

.nav-toggle__box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__box > span {
  display: block;
  height: 1.5px;
  width: 100%;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}

.site-header[data-open] .nav-toggle__box > span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__box > span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__box > span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

.nav-toggle__text {
  white-space: nowrap;
}

/* 导航 */
.site-nav {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 14px;
  min-height: 0;
}

.nav-kicker {
  padding-inline-start: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(127, 166, 201, 0.55);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.24s var(--ease), background 0.24s var(--ease), transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.nav-link::before {
  content: "";
  flex: 0 0 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ink-4);
  transition: background 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.nav-link:hover {
  color: var(--white);
  background: rgba(46, 78, 126, 0.3);
  transform: translateX(2px);
}

.nav-link:hover::before { background: var(--mist); }

.nav-link[aria-current="page"] {
  color: var(--white);
  background: rgba(47, 240, 214, 0.09);
  box-shadow: inset 0 0 0 1px rgba(47, 240, 214, 0.34);
}

.nav-link[aria-current="page"]::before {
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(47, 240, 214, 0.85);
}

.nav-tail {
  margin-block-start: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-block-start: 20px;
  border-block-start: 1px solid var(--line-soft);
}

/* 状态胶囊 */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(47, 240, 214, 0.24);
  background: var(--cyan-deep);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.status-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: status-pulse 3.6s ease-out infinite;
}

@keyframes status-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(47, 240, 214, 0.6); }
  68%  { box-shadow: 0 0 0 7px rgba(47, 240, 214, 0); }
  100% { box-shadow: 0 0 0 0 rgba(47, 240, 214, 0); }
}

/* 遮罩 */
.nav-scrim { display: none; }

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: transform 0.22s var(--ease), background 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.btn--accent {
  background: var(--orange);
  color: #150800;
  box-shadow: 0 10px 26px -14px rgba(255, 122, 47, 0.95);
}

.btn--accent:hover {
  background: #FF8F4F;
  transform: translateY(-2px);
}

.btn--cyan {
  background: var(--cyan);
  color: #04120F;
}

.btn--cyan:hover {
  background: #63F7E4;
  transform: translateY(-2px);
}

.btn--ghost {
  border-color: rgba(127, 166, 201, 0.42);
  background: rgba(16, 31, 60, 0.55);
  color: var(--white);
}

.btn--ghost:hover {
  border-color: rgba(47, 240, 214, 0.7);
  color: var(--cyan);
  transform: translateY(-2px);
}

.btn--block { width: 100%; }

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

/* ---------- 8. 内容基础组件 ---------- */
main { display: block; }

.container {
  width: min(100% - 48px, 1180px);
  margin-inline: auto;
  padding-block: clamp(48px, 7vw, 104px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-block-end: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  opacity: 0.8;
}

/* 面包屑 */
.breadcrumb { margin-block-end: clamp(20px, 3vw, 32px); }

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(127, 166, 201, 0.45);
}

.breadcrumb__list a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.breadcrumb__list a:hover { color: var(--cyan); }

.breadcrumb__list [aria-current="page"] { color: var(--white); }

/* 图片容器 */
.media-frame {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 120% at 20% 0%, rgba(47, 240, 214, 0.13), transparent 58%),
    linear-gradient(160deg, var(--ink-2), var(--ink-1));
}

.media-frame > img,
.media-frame > video,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(47, 240, 214, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 240, 214, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }

/* ---------- 9. 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  inset-inline-start: var(--rail-w);
  width: calc(100% - var(--rail-w));
  height: 2px;
  z-index: 90;
  pointer-events: none;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(47, 240, 214, 0.35) 62%, var(--orange) 100%);
  transition: transform 0.08s linear;
}

/* ---------- 10. 显现动画 ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
}

.js-reveal [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

/* ---------- 11. Footer ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: clamp(48px, 6vw, 88px) clamp(20px, 4vw, 64px) 28px;
  border-block-start: 1px solid var(--line-soft);
  background-color: var(--ink-0);
  background-image:
    radial-gradient(560px 400px at 88% -14%, rgba(47, 240, 214, 0.13), transparent 66%),
    radial-gradient(480px 320px at 6% 108%, rgba(255, 122, 47, 0.06), transparent 68%),
    linear-gradient(rgba(46, 78, 126, 0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 78, 126, 0.10) 1px, transparent 1px),
    linear-gradient(180deg, var(--ink-1) 0%, var(--ink-0) 74%);
  background-size: auto, auto, 80px 80px, 80px 80px, auto;
}

.footer-inner {
  max-width: 1240px;
  margin-inline: auto;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.45fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.footer-brand {
  margin-block-end: 18px;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(52px, 10vw, 130px);
  line-height: 0.82;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, rgba(230, 241, 248, 0.24), rgba(47, 240, 214, 0.07));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-stroke: 1px rgba(127, 166, 201, 0.2);
}

.footer-summary {
  max-width: 34em;
  margin-block-end: 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.footer-cta { margin-block-start: 2px; }

.footer-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 32px;
}

.footer-col__title {
  margin-block-end: 14px;
  padding-block-end: 10px;
  border-block-end: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links a {
  display: inline-block;
  font-size: 14.5px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-links a:hover {
  color: var(--white);
  transform: translateX(3px);
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px 28px;
  margin-block-start: clamp(36px, 5vw, 60px);
  padding-block: clamp(24px, 3vw, 34px);
  border-block: 1px solid var(--line-soft);
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(127, 166, 201, 0.62);
}

.footer-contact__value {
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--white);
  word-break: break-word;
}

.footer-contact__note {
  max-width: 62em;
  margin-block-start: 16px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(127, 166, 201, 0.78);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-block-start: clamp(28px, 3.5vw, 44px);
  padding-block-start: 22px;
  border-block-start: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(127, 166, 201, 0.72);
}

.footer-base__meta {
  color: var(--mist);
}

/* ---------- 12. 响应式 ---------- */
@media (max-width: 1100px) {
  .footer-main { grid-template-columns: 1fr; }
  .footer-matrix { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root {
    --rail-w: 0px;
    --rail-h: 64px;
  }

  body { padding-inline-start: 0; }

  .site-header {
    position: sticky;
    top: 0;
    bottom: auto;
    inset-inline-start: auto;
    width: 100%;
    min-height: var(--rail-h);
    height: auto;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px;
    overflow: visible;
    border-inline-end: 0;
    border-block-end: 1px solid var(--line-soft);
    background: rgba(5, 10, 22, 0.97);
  }

  .site-header::before { display: none; }

  .rail-head {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 14px;
  }

  .brand {
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
  }

  .brand__mark { font-size: 20px; letter-spacing: 0.16em; }
  .brand__suffix { font-size: 9px; letter-spacing: 0.3em; }
  .rail-tagline { display: none; }

  .nav-toggle { display: inline-flex; flex: 0 0 auto; }

  .site-nav {
    position: fixed;
    inset-block: var(--rail-h) 0;
    inset-inline: auto 0;
    z-index: 2;
    flex: none;
    width: min(340px, 88vw);
    padding: 22px 20px 32px;
    gap: 18px;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-inline-start: 1px solid rgba(47, 240, 214, 0.22);
    background: linear-gradient(180deg, #0A1428 0%, var(--ink-0) 100%);
    box-shadow: -30px 0 70px -36px rgba(0, 0, 0, 0.95);
    transform: translateX(102%);
    transition: transform 0.36s var(--ease);
  }

  .site-header[data-open] .site-nav { transform: none; }

  .nav-kicker { padding-inline-start: 12px; }
  .nav-link { font-size: 16px; padding: 11px 16px; }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1;
    background: rgba(5, 10, 22, 0.68);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s var(--ease);
  }

  .site-header[data-open] .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }

  .scroll-progress { height: 3px; }
}

@media (max-width: 820px) {
  .footer-contact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .container {
    width: min(100% - 32px, 1180px);
    padding-block: clamp(36px, 9vw, 64px);
  }

  .footer-matrix { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-contact { grid-template-columns: 1fr; gap: 16px; }
  .footer-base { flex-direction: column; align-items: flex-start; gap: 8px; }
  .footer-brand { font-size: clamp(44px, 15vw, 76px); }
}

/* ---------- 13. Reduced motion ---------- */
@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;
    scroll-behavior: auto !important;
  }

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

  .status-chip::before {
    animation: none;
    box-shadow: 0 0 0 3px rgba(47, 240, 214, 0.22);
  }

  .scroll-progress { transition: none; }
  .nav-link:hover,
  .btn:hover,
  .footer-links a:hover { transform: none; }
}