/* ============================================================================
   OO 双转门户 · 本地语义视觉壳样式  (Portal V2 / B19)
   来源：从 OO双转/OO加速器.dc.html 与其 _ds/nocturne 设计令牌提炼。
   规则：纯本地样式，无远程字体/图标/CDN；保留深色紫色视觉、双圆品牌与
        home/login/user-panel 视觉语言。业务行为不在此文件。
   ========================================================================== */

/* ---- 设计令牌（提炼自 _ds/nocturne styles.css，字体本地化） ------------- */
:root {
  --color-bg: #0a0e17;
  --color-surface: #232532;
  --color-text: #e9e9ed;
  --color-accent: #9184d9;          /* 产品 blurple 主强调色 */
  --color-accent-2: #a7a1db;        /* 双圆第二色 */
  --color-divider: color-mix(in srgb, #e9e9ed 16%, transparent);

  --color-neutral-100: #f3f5fe;
  --color-neutral-200: #e4e7f5;
  --color-neutral-300: #cfd3e5;
  --color-neutral-400: #b2b6ca;
  --color-neutral-500: #9397ab;
  --color-neutral-600: #75798c;
  --color-neutral-700: #595d6c;
  --color-neutral-800: #3f424d;
  --color-neutral-900: #292b31;

  --color-accent-100: #f5f4ff;
  --color-accent-200: #e7e5fe;
  --color-accent-300: #d2cefd;
  --color-accent-400: #b5abfc;
  --color-accent-500: #968ae0;
  --color-accent-600: #796cbf;
  --color-accent-700: #5d5294;
  --color-accent-800: #423a6a;
  --color-accent-900: #2b2741;

  --color-section: #262a60;
  --color-section-glow: #353b80;

  --color-ok: #79d69f;              /* 状态色（本地视觉用途，非授权真值） */
  --color-warn: #e6b566;
  --color-danger: #e79a94;

  /* 正文系统字体；展示标题用 Google Fonts 的 Instrument Serif（官网展示豁免），
     中文按名称回退本地宋体系 */
  --font-heading: "Inter", system-ui, -apple-system, "Segoe UI",
                  "Microsoft YaHei", "PingFang SC", sans-serif;
  --font-heading-weight: 500;
  --font-body: var(--font-heading);
  --font-display: "Instrument Serif", "Songti SC", "STSong", "SimSun", serif;

  --space-1: 2.8px;  --space-2: 5.6px;  --space-3: 8.4px;
  --space-4: 11.2px; --space-6: 16.8px; --space-8: 22.4px;

  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 14px;

  --shadow-sm: 0 0 0 1px #3f424d;
  --shadow-md: 0 0 0 1px #595d6c, 0 6px 18px rgba(0,0,0,0.55);
  --shadow-lg: 0 0 0 1px #9397ab, 0 16px 40px rgba(0,0,0,0.65);
}

/* ---- 基础 / reset ------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
  background:
    radial-gradient(1200px 720px at 82% -160px,
      color-mix(in srgb, var(--color-accent-900) 75%, transparent), transparent 60%),
    radial-gradient(1100px 800px at -10% 100%,
      color-mix(in srgb, black 30%, transparent), transparent 55%),
    var(--color-bg);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 0;
}
p { margin: 0; }
a { color: var(--color-accent); text-underline-offset: 3px; }
a:hover { color: var(--color-accent-300); }
img { display: block; max-width: 100%; }
figure { margin: 0; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 72px); }
.muted { color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.tnum { font-feature-settings: 'tnum' 1; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.hidden { display: none !important; }

/* ---- Liquid Glass 液态玻璃（Lumora 复刻） -------------------------------- */
.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative; overflow: hidden;
}
.liquid-glass::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0.15) 20%,
    rgba(255, 255, 255, 0) 40%, rgba(255, 255, 255, 0) 60%,
    rgba(255, 255, 255, 0.15) 80%, rgba(255, 255, 255, 0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}

/* 内联 SVG 图标 */
.ic { width: 1em; height: 1em; display: inline-block; vertical-align: -0.125em;
      fill: none; stroke: currentColor; stroke-width: 1.9;
      stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ic-lg { width: 1.2em; height: 1.2em; }

/* 双圆品牌标记 */
.brand-mark { display: block; }
.brand-mark .c1 { fill: none; stroke: var(--color-accent); stroke-width: 2; }
.brand-mark .c2 { fill: none; stroke: var(--color-accent-2); stroke-width: 2; opacity: 0.55; }

/* ---- 按钮 --------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 13px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: 8px 12px; border-radius: var(--radius-md);
  transition: background 0.2s, border-color 0.2s, transform 0.1s;
}
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:not(:disabled):hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); }
.btn-primary:not(:disabled):active { transform: scale(0.98); }
.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:not(:disabled):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-ghost { color: var(--color-accent); padding-inline: 8px; }
.btn-ghost:hover { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-block { width: 100%; }
.btn-8125 { color: var(--color-warn); border-color: color-mix(in srgb, var(--color-warn) 62%, transparent); }
.btn-8125:not(:disabled):hover { background: color-mix(in srgb, var(--color-warn) 12%, transparent); }
.btn-cta { background: #fff; color: #10131c; border-color: #fff;
  border-radius: 999px; padding: 9px 18px; font-weight: 500; }
.btn-cta:not(:disabled):hover { background: color-mix(in srgb, #fff 86%, transparent);
  border-color: transparent; color: #10131c; }
.btn-cta:not(:disabled):active { transform: scale(0.98); }
.btn-cta-lg { padding: 13px 28px; font-size: 14.5px; }

/* ---- 标签 --------------------------------------------------------------- */
.tag {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px; border-radius: 6px;
}
.tag-accent { background: var(--color-accent-800); color: var(--color-accent-100); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* ---- 输入 / 分段控件 ---------------------------------------------------- */
.input {
  width: 100%; min-height: 40px; padding: 8px 12px; font: inherit;
  font-size: 14px; color: var(--color-text); caret-color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  letter-spacing: 0.05em;
}
.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }

.seg { display: inline-flex; overflow: hidden;
  border: 1px solid var(--color-divider); border-radius: var(--radius-md); }
.seg-opt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; font-size: 13px; cursor: pointer; background: transparent;
  border: none; color: color-mix(in srgb, var(--color-text) 72%, transparent);
  font-family: inherit;
}
.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }
.seg-opt[aria-pressed="true"] { color: var(--color-accent); box-shadow: inset 0 0 0 1px var(--color-accent); }
.seg-opt:not([aria-pressed="true"]):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }

/* ---- 卡片 / 高度 -------------------------------------------------------- */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-3); border-radius: var(--radius-md); background: var(--color-surface);
}
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* ---- 导航 --------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 14px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-bg) 55%, transparent);
  padding-block: 12px;
  padding-inline: max(clamp(20px, 5vw, 72px), calc((100% - 1200px) / 2 + clamp(20px, 5vw, 72px)));
}
.nav-brand { display: inline-flex; align-items: center; gap: 10px; margin-right: auto;
  font-family: var(--font-display); font-style: italic; font-weight: 400; font-size: 19px; }
.nav-brand small { font-size: 10.5px; font-weight: 400; letter-spacing: 0.03em;
  font-family: var(--font-body); font-style: normal;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.nav-links { display: flex; align-items: center; gap: 2px; border-radius: 999px; padding: 5px; }
.nav-links a { color: color-mix(in srgb, var(--color-text) 90%, transparent);
  text-decoration: none; font-size: 13.5px; padding: 8px 14px; border-radius: 999px;
  transition: color 0.2s, background 0.2s; }
.nav-links a:hover { color: #fff; background: color-mix(in srgb, #fff 8%, transparent); }

/* ---- 中英文切换 --------------------------------------------------------- */
.lang-switch { position: relative; }
.lang-toggle { border-radius: 999px; padding: 7px 12px; gap: 4px;
  background: color-mix(in srgb, #fff 4%, transparent); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 8px); z-index: 70;
  min-width: 108px; border-radius: 14px; padding: 6px; display: flex; flex-direction: column; }
.lang-menu[hidden] { display: none !important; }
.lang-menu button { appearance: none; border: none; background: transparent; cursor: pointer;
  color: color-mix(in srgb, var(--color-text) 88%, transparent); font: inherit; font-size: 13px;
  text-align: left; padding: 8px 12px; border-radius: 10px; }
.lang-menu button:hover, .lang-menu button[aria-selected="true"] {
  background: color-mix(in srgb, #fff 10%, transparent); color: #fff; }

/* ---- 移动端汉堡按钮与全屏菜单 -------------------------------------------- */
.nav-menu-btn { display: none; width: 40px; height: 40px; border-radius: 999px;
  border: none; cursor: pointer; color: var(--color-text);
  align-items: center; justify-content: center; }
.nav-menu-btn .ic { position: absolute; width: 17px; height: 17px;
  transition: transform 0.3s ease, opacity 0.3s ease; }
.nav-menu-btn .ic-x { opacity: 0; transform: rotate(-90deg) scale(0.75); }
.nav-menu-btn[aria-expanded="true"] .ic-menu { opacity: 0; transform: rotate(90deg) scale(0.75); }
.nav-menu-btn[aria-expanded="true"] .ic-x { opacity: 1; transform: rotate(0deg) scale(1); }
.nav-menu { position: fixed; inset: 0; z-index: 55; opacity: 0; visibility: hidden;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), visibility 0s linear 0.5s; }
.nav-menu.is-open { opacity: 1; visibility: visible;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
.nav-menu-backdrop { position: absolute; inset: 0; cursor: default;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.nav-menu-panel { position: relative; height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 32px; padding: 84px 24px 44px; }
.nav-menu-panel a { color: var(--color-text); text-decoration: none; font-size: 28px;
  font-family: var(--font-display); opacity: 0; transform: translateY(16px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s; }
.nav-menu-panel a:hover { color: #fff; }
.nav-menu.is-open .nav-menu-panel a { opacity: 1; transform: translateY(0); }
.nav-menu.is-open .nav-menu-panel a:nth-of-type(1) { transition-delay: 0.1s; }
.nav-menu.is-open .nav-menu-panel a:nth-of-type(2) { transition-delay: 0.15s; }
.nav-menu.is-open .nav-menu-panel a:nth-of-type(3) { transition-delay: 0.2s; }
.nav-menu.is-open .nav-menu-panel a:nth-of-type(4) { transition-delay: 0.25s; }
.nav-menu-panel .btn-cta { margin-top: 10px; opacity: 0; transform: scale(0.9);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), background 0.2s; }
.nav-menu.is-open .nav-menu-panel .btn-cta { opacity: 1; transform: scale(1);
  transition-delay: 0.3s; }

/* ---- 首屏 Hero ---------------------------------------------------------- */
.hero {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 56px clamp(32px, 4.5vw, 72px);
  padding: clamp(48px, 7vw, 100px) 0 76px;
}
.hero-copy { flex: 1 1 480px; min-width: 0; }
.hero-copy h1 { font-size: clamp(36px, 4.8vw, 58px); line-height: 1.16; }
.hero-copy h1 span { display: block; }
.hero-lead { font-size: 17px; line-height: 28px; margin-top: 24px; max-width: 56ch;
  color: color-mix(in srgb, var(--color-text) 86%, transparent); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.hero-note { margin-top: 16px; font-size: 13px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.hero-figure { flex: 1 1 360px; max-width: 470px; min-width: 0; position: relative; }
.hero-figure .glow { position: absolute; inset: -48px -64px; pointer-events: none;
  background: radial-gradient(60% 55% at 60% 40%,
    color-mix(in srgb, var(--color-accent-800) 60%, transparent), transparent 72%);
  filter: blur(12px); }
.hero-figure img { width: 100%; height: auto; border-radius: var(--radius-lg); position: relative;
  mix-blend-mode: lighten; }

/* ---- 首屏电影感背景（本地场景视频 + 车窗浮层，Lumora 复刻） -------------- */
.hero-cinema { position: relative; overflow: hidden;
  display: flex; flex-direction: column;
  min-height: calc(100svh - 64px);
  background: color-mix(in srgb, black 26%, var(--color-bg)); }
.hero-cinema-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-scene { position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0; transition: opacity 1s ease-in-out; }
.hero-scene.is-active { opacity: 1; }
.hero-cinema-frame { position: absolute; inset: 0;
  background: url("media/train-frame.png") center / cover no-repeat;
  transform: translateY(0) scale(1.03);
  animation: hero-bob 3s ease-in-out infinite; }
@keyframes hero-bob {
  0%, 100% { transform: translateY(0) scale(1.03); }
  50% { transform: translateY(-6px) scale(1.03); }
}
.hero-cinema-scrim { position: absolute; inset: 0;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--color-bg) 58%, transparent),
      transparent 30%, transparent 60%,
      var(--color-bg) 99%),
    radial-gradient(82% 92% at 50% 46%,
      color-mix(in srgb, black 46%, transparent), transparent 74%); }

.hero-stage { position: relative; z-index: 1; flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding-top: clamp(36px, 5vh, 64px); padding-bottom: 18px; }
.hero-badge { display: inline-flex; align-items: center; border-radius: 999px;
  padding: 9px 18px; font-size: 12.5px; letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-text) 88%, transparent);
  transition: color 0.7s ease; }
.hero-cinema h1 { margin-top: 26px; font-size: clamp(38px, 6.4vw, 86px);
  line-height: 1.1; letter-spacing: -0.01em;
  text-shadow: 0 2px 26px rgba(0, 0, 0, 0.45);
  transition: color 0.7s ease; }
.hero-cinema h1 span { display: block; }
.hero-cinema .hero-lead { margin: 22px auto 0; max-width: 58ch;
  font-size: clamp(14.5px, 1.55vw, 16.5px); line-height: 1.75;
  color: color-mix(in srgb, var(--color-text) 88%, transparent);
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.4);
  transition: color 0.7s ease; }
.hero-cinema .hero-actions { justify-content: center; margin-top: 30px; }
.hero-cinema .hero-note { margin-top: 14px; font-size: 12.5px;
  color: color-mix(in srgb, var(--color-text) 62%, transparent);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.4);
  transition: color 0.7s ease; }
.hero-scenes { margin-top: clamp(26px, 4.5vh, 44px); display: flex; flex-wrap: wrap;
  justify-content: center; gap: clamp(14px, 3vw, 34px); }
.hero-scene-btn { appearance: none; background: none; border: none; cursor: pointer;
  font: inherit; font-size: 12.5px; letter-spacing: 0.08em; color: var(--color-text);
  opacity: 0.5; padding: 2px 2px 7px; border-bottom: 2px solid transparent;
  transition: opacity 0.3s ease, border-color 0.3s ease, color 0.7s ease; }
.hero-scene-btn:hover { opacity: 0.85; }
.hero-scene-btn.is-active { opacity: 1; border-bottom-color: currentColor; }
.hero-stats { position: relative; z-index: 1; display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center; gap: 8px 16px;
  padding: 0 20px 26px; font-size: 12.5px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.hero-stats strong { font-weight: 500; color: var(--color-text); }
.hero-stats .sep { opacity: 0.35; }

/* 第 3 场景（深林）时首屏内容切为深色；导航与底部数据带保持原样 */
.hero-cinema.is-scene-dark .hero-badge,
.hero-cinema.is-scene-dark h1,
.hero-cinema.is-scene-dark .hero-lead,
.hero-cinema.is-scene-dark .hero-note,
.hero-cinema.is-scene-dark .hero-scene-btn { color: #182C41; text-shadow: none; }
.hero-cinema.is-scene-dark .hero-stage .btn-cta { background: #182C41;
  border-color: #182C41; color: #f3f5fe; }

/* ---- 指标跑马灯（持续滚动，无缝双份内容；只写自己的能力指标） ------------ */
.marquee { overflow: hidden; padding: 30px 0 44px;
  -webkit-mask-image: linear-gradient(to right, transparent, black 14%, black 86%, transparent);
  mask-image: linear-gradient(to right, transparent, black 14%, black 86%, transparent); }
.marquee-track { display: flex; width: max-content; align-items: center;
  animation: marquee-scroll 36s linear infinite; }
.marquee-track span { font-size: 12px; letter-spacing: 0.16em; white-space: nowrap;
  margin-right: 64px;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  color: color-mix(in srgb, var(--color-text) 42%, transparent); }
@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---- 数据带 ------------------------------------------------------------- */
/* ---- 官网下半段（无视频，液态玻璃内容区） -------------------------------- */
.site-main { padding-bottom: 28px; }
.section { padding: 88px 0 28px; }
.kicker { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.kicker span.line { width: 44px; height: 1px; background: var(--color-accent); display: block; }
.kicker span.text { font-size: 13px; letter-spacing: 0.08em; color: var(--color-accent); }
.section h2 { font-size: clamp(32px, 4vw, 48px); line-height: 1.18; }
.section-lead { margin-top: 14px; font-size: 15.5px; line-height: 26px; max-width: 60ch;
  color: color-mix(in srgb, var(--color-text) 70%, transparent); }

/* ---- 玩家反馈墙（瀑布流照片墙：保留原图比例，倾斜拍立得框，滚动进场） ---- */
.wall { --wall-cols: 3; list-style: none; margin: 40px 0 0; padding: 0; columns: 3 240px; column-gap: 18px; }
/* JS 分列后：等宽列容器 + 纵向 flex，列数由 --wall-cols 按断点给出 */
.wall.is-js { columns: auto; display: grid; grid-template-columns: repeat(var(--wall-cols), minmax(0, 1fr));
  gap: 0 18px; align-items: start; }
.wall-col { display: flex; flex-direction: column; min-width: 0; }
.snap { break-inside: avoid; margin: 0 0 18px; padding: 8px 0; }
.snap-card { position: relative; margin: 0; padding: 8px 8px 10px; border-radius: 16px;
  transform: rotate(var(--tilt, 0deg));
  transition: transform 0.45s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.45s; }
.snap-card::after { content: ""; position: absolute; left: 50%; top: -9px; width: 68px; height: 20px;
  transform: translateX(-50%) rotate(calc(var(--tilt, 0deg) * -2.5));
  background: color-mix(in srgb, var(--color-accent-200) 34%, transparent);
  border: 1px solid color-mix(in srgb, #fff 18%, transparent); border-radius: 2px;
  backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); pointer-events: none; }
.snap-card:hover, .snap-card:focus-within { transform: rotate(0deg) translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-md); z-index: 2; }
.snap-link { display: block; border-radius: 10px; overflow: hidden; background: var(--color-neutral-900);
  outline-offset: 3px; }
.snap-link:focus-visible { outline: 2px solid var(--color-accent-300); }
.snap-link img { display: block; width: 100%; height: auto; filter: saturate(0.96);
  transition: filter 0.45s ease, transform 3s cubic-bezier(0.22, 0.61, 0.36, 1); }
.snap-card:hover .snap-link img { filter: saturate(1.04); transform: scale(1.04); }
.snap-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 10px 4px 0;
  font-size: 12.5px; line-height: 18px; color: color-mix(in srgb, var(--color-text) 66%, transparent); }
.snap-no { flex: none; font-family: var(--font-display); font-size: 13px; color: var(--color-accent); }
.wall-note { margin: 28px 0 0; font-size: 12.5px; line-height: 20px; max-width: 72ch;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
/* 看图层：固定全屏，图片按视口等比缩放；关闭按钮固定右上，手机端左右切换挪到底部 */
.lightbox { position: fixed; inset: 0; z-index: 80; display: flex; align-items: center; justify-content: center;
  padding: 72px 20px 84px; background: rgba(6, 8, 14, 0.88);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.lightbox-figure { margin: 0; max-width: min(1240px, 100%); max-height: 100%; display: flex; flex-direction: column;
  align-items: center; gap: 12px; }
.lightbox-figure img { display: block; max-width: 100%; max-height: calc(100vh - 190px); width: auto; height: auto;
  border-radius: 12px; box-shadow: var(--shadow-lg); background: var(--color-neutral-900); }
.lightbox-caption { display: flex; align-items: baseline; gap: 10px; font-size: 13px; line-height: 20px;
  color: color-mix(in srgb, var(--color-text) 72%, transparent); text-align: center; }
.lightbox-caption #lightbox-count { font-family: var(--font-display); font-size: 14px; color: var(--color-accent-300); }
.lightbox-btn { position: fixed; z-index: 81; width: 48px; height: 48px; border-radius: 50%; border: 1px solid color-mix(in srgb, #fff 18%, transparent);
  background: color-mix(in srgb, #fff 8%, transparent); color: var(--color-text); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  transition: background 0.2s ease, transform 0.2s ease; }
.lightbox-btn .ic { width: 22px; height: 22px; }
.lightbox-btn:hover { background: color-mix(in srgb, #fff 16%, transparent); transform: scale(1.04); }
.lightbox-btn:focus-visible { outline: 2px solid var(--color-accent-300); outline-offset: 2px; }
.lightbox-close { top: calc(16px + env(safe-area-inset-top, 0px)); right: calc(16px + env(safe-area-inset-right, 0px)); }
.lightbox-prev { left: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 16px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover, .lightbox-next:hover { transform: translateY(-50%) scale(1.04); }
@media (max-width: 760px) {
  .lightbox { padding: 64px 12px 92px; }
  .lightbox-figure img { max-height: calc(100vh - 180px); }
  .lightbox-caption { flex-wrap: wrap; justify-content: center; font-size: 12px; }
  .lightbox-prev, .lightbox-next { top: auto; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); transform: none; }
  .lightbox-prev { left: calc(50% - 60px); }
  .lightbox-next { right: calc(50% - 60px); }
  .lightbox-prev:hover, .lightbox-next:hover { transform: scale(1.04); }
}
@media (prefers-reduced-motion: reduce) {
  .lightbox-btn { transition: none; }
}

@keyframes wall-in {
  from { opacity: 0; transform: translateY(56px); filter: blur(8px); }
  to   { opacity: 1; transform: translateY(0);    filter: blur(0); }
}
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .snap { animation: wall-in linear both; animation-timeline: view(); animation-range: entry 0% entry 55%; }
  }
}
@media (max-width: 1000px) {
  .wall { --wall-cols: 2; }
}
@media (max-width: 760px) {
  .wall { columns: 2; column-gap: 12px; margin-top: 28px; }
  .wall.is-js { gap: 0 12px; }
  .snap { margin-bottom: 12px; padding: 6px 0; }
  .snap-card { padding: 6px 6px 8px; border-radius: 12px; }
  .snap-card::after { width: 48px; height: 14px; top: -6px; }
  .snap-card figcaption { font-size: 11.5px; line-height: 16px; padding-top: 8px; }
  .snap-card:hover { transform: rotate(var(--tilt, 0deg)); }
}
@media (max-width: 360px) {
  .wall { --wall-cols: 1; columns: 1; }
}

/* ---- 核心能力 ----------------------------------------------------------- */
.feature-list { margin-top: 28px; display: flex; flex-direction: column; gap: 12px; }
.feature-row { display: grid; grid-template-columns: 64px minmax(160px, 220px) 1fr;
  align-items: start; gap: 8px 28px; padding: 28px 28px; border-radius: 20px; }
.feature-row .no { font-family: var(--font-display); font-size: 18px; color: var(--color-accent); margin: 0; }
.feature-row h3 { font-size: 24px; line-height: 1.2; }
.feature-row p { font-size: 15.5px; line-height: 28px; max-width: 56ch;
  color: color-mix(in srgb, var(--color-text) 78%, transparent); }

/* ---- 快速上手 ----------------------------------------------------------- */
.steps-grid { margin-top: 44px; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.step { border-radius: 20px; padding: 28px 24px 26px; }
.step .no { font-family: var(--font-display); font-style: italic;
  font-size: 44px; line-height: 1; color: color-mix(in srgb, var(--color-accent) 55%, transparent); }
.step h4 { margin: 16px 0 8px; font-size: 18px; }
.step p { font-size: 14px; line-height: 24px; color: color-mix(in srgb, var(--color-text) 70%, transparent); }

/* ---- 常见问题 ----------------------------------------------------------- */
.faq { max-width: 760px; margin-top: 28px; display: flex; flex-direction: column; gap: 10px; }
.faq details { padding: 4px 18px 14px; border-radius: 18px; }
.faq summary { cursor: pointer; display: flex; align-items: center; gap: 12px; font-size: 17px;
  font-family: var(--font-display); list-style: none; padding-top: 14px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .ic { color: var(--color-accent); transition: transform 0.25s ease; }
.faq details[open] summary .ic { transform: rotate(45deg); }
.faq p { margin: 10px 0 4px 30px; font-size: 14.5px; line-height: 26px; max-width: 60ch;
  color: color-mix(in srgb, var(--color-text) 78%, transparent); }

/* ---- 下载区 CTA / 页脚 -------------------------------------------------- */
.cta { margin: 36px 0 20px; padding: 56px 40px; border-radius: 28px; text-align: left; }
.cta h3 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.2; }
.cta p { margin-top: 14px; font-size: 15.5px; line-height: 26px; max-width: 56ch;
  color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.cta .hero-actions { margin-top: 28px; }
.cta .muted { margin-top: 16px; font-size: 12.5px; }
.site-footer { padding: 26px 0 48px; font-size: 13px; display: flex; flex-wrap: wrap;
  align-items: center; gap: 14px 22px; color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.site-footer .copyright { margin-right: auto; }
.site-footer a { font-size: 13px; color: color-mix(in srgb, var(--color-text) 62%, transparent); text-decoration: none; }
.site-footer a:hover { color: #fff; }

/* ---- Portal 当前阶段标识 ------------------------------------------------ */
.portal-stage-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em;
  padding: 3px 9px; border-radius: 6px;
  color: #cfe0ff; background: color-mix(in srgb, #3b6ff5 26%, transparent);
  border: 1px solid color-mix(in srgb, #6f9bff 55%, transparent);
}
.portal-stage-banner {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 10px clamp(18px, 3vw, 28px); font-size: 12.5px; line-height: 1.5;
  color: #d7e4ff; background: color-mix(in srgb, #3b6ff5 16%, transparent);
  border-bottom: 1px solid color-mix(in srgb, #6f9bff 40%, transparent);
}
.portal-stage-banner .ic { color: #9dc0ff; }

/* ---- 覆盖层通用（登录 / 用户面板，夜曲原版） --------------------------- */
.overlay { position: fixed; inset: 0; z-index: 90; overflow: auto; }
.overlay-login h2, .overlay-login h3 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
}
.overlay-stars {
  position: absolute; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
  background-image:
    radial-gradient(1px 1px at 8% 12%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 22% 38%, rgba(255,255,255,.38), transparent),
    radial-gradient(1.2px 1.2px at 41% 18%, rgba(255,255,255,.5), transparent),
    radial-gradient(1px 1px at 63% 8%, rgba(255,255,255,.32), transparent),
    radial-gradient(1px 1px at 78% 27%, rgba(255,255,255,.46), transparent),
    radial-gradient(1.2px 1.2px at 91% 14%, rgba(255,255,255,.4), transparent),
    radial-gradient(1px 1px at 14% 64%, rgba(255,255,255,.34), transparent),
    radial-gradient(1px 1px at 33% 81%, rgba(255,255,255,.48), transparent),
    radial-gradient(1.2px 1.2px at 52% 57%, rgba(255,255,255,.3), transparent),
    radial-gradient(1px 1px at 69% 73%, rgba(255,255,255,.42), transparent),
    radial-gradient(1px 1px at 86% 62%, rgba(255,255,255,.36), transparent),
    radial-gradient(1px 1px at 5% 88%, rgba(255,255,255,.28), transparent),
    radial-gradient(1.2px 1.2px at 47% 92%, rgba(255,255,255,.4), transparent),
    radial-gradient(1px 1px at 96% 84%, rgba(255,255,255,.33), transparent);
  animation: overlay-stars-drift 90s linear infinite;
}
.overlay-stars::after {
  content: ""; position: absolute; inset: -18%;
  background-image:
    radial-gradient(1px 1px at 12% 22%, rgba(210,206,253,.45), transparent),
    radial-gradient(1px 1px at 28% 71%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 58% 36%, rgba(210,206,253,.38), transparent),
    radial-gradient(1px 1px at 74% 9%, rgba(255,255,255,.26), transparent),
    radial-gradient(1px 1px at 88% 49%, rgba(210,206,253,.32), transparent),
    radial-gradient(1px 1px at 6% 54%, rgba(255,255,255,.22), transparent),
    radial-gradient(1px 1px at 39% 14%, rgba(255,255,255,.3), transparent),
    radial-gradient(1px 1px at 81% 88%, rgba(210,206,253,.28), transparent);
  animation: overlay-stars-drift 140s linear infinite reverse;
}
@keyframes overlay-stars-drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-36px, 18px, 0); }
}
.overlay-login {
  background: radial-gradient(120% 90% at 50% 0%,
    color-mix(in srgb, var(--color-accent-900) 26%, var(--color-bg)) 0%,
    var(--color-bg) 46%, var(--color-neutral-900) 100%);
}
.overlay-back { position: fixed; top: 18px; left: 22px; z-index: 2; font-size: 13px; }

/* ---- 登录卡片 ----------------------------------------------------------- */
.login-wrap { position: relative; z-index: 1; min-height: 100%;
  display: flex; align-items: center; justify-content: center; padding: 72px 24px 48px; }
.login-card { width: 100%; max-width: 940px; display: flex; flex-wrap: wrap;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--color-neutral-800);
  background: color-mix(in srgb, var(--color-surface) 94%, transparent); }
.login-aside { flex: 1 1 300px; min-width: 0; padding: 40px 36px;
  display: flex; flex-direction: column;
  background: linear-gradient(165deg, color-mix(in srgb, var(--color-accent-900) 40%, transparent), transparent 62%);
  border-right: 1px solid color-mix(in srgb, var(--color-neutral-800) 80%, transparent); }
.login-eyebrow { display: flex; align-items: center; gap: 9px; font-size: 12px;
  letter-spacing: 0.14em; color: var(--color-accent-300); }
.login-aside h2 { margin-top: 18px; font-size: 30px; line-height: 1.22; letter-spacing: -0.01em; }
.login-aside h2 span { display: block; }
.login-aside .sub { margin-top: 10px; font-size: 13px; color: color-mix(in srgb, var(--color-text) 58%, transparent); }
.login-feats { display: flex; flex-direction: column; gap: 14px; margin-top: 28px; }
.login-feat { display: flex; align-items: center; gap: 12px; }
.login-feat .ico { width: 36px; height: 36px; flex: none; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-neutral-800) 80%, transparent);
  display: inline-flex; align-items: center; justify-content: center; color: var(--color-accent-300); }
.login-feat .t { font-size: 13.5px; }
.login-feat .d { font-size: 11.5px; color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.login-aside-stats { margin-top: auto; padding-top: 14px; display: flex; flex-wrap: wrap; gap: 16px 26px; }
.login-aside-stats::before {
  content: ""; flex: 1 0 100%; height: 1px;
  background: linear-gradient(90deg, var(--color-neutral-700), transparent);
}
.login-aside-stats .n { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 20px; color: var(--color-accent-300); }
.login-aside-stats .l { margin-top: 2px; font-size: 11.5px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.login-main { flex: 1.15 1 340px; min-width: 0; padding: 48px 44px; }
.login-main h3 { font-size: 22px; }
.login-main .sub { margin-top: 8px; font-size: 13px; color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.login-label { margin-top: 26px; font-size: 12.5px; color: color-mix(in srgb, var(--color-text) 62%, transparent); }
.login-label { display: block; margin-bottom: 8px; }
.login-actions { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.login-actions .btn[aria-busy="true"] { cursor: wait; }
.login-privacy-note { margin-top: 12px; font-size: 11.5px; line-height: 18px;
  color: color-mix(in srgb, var(--color-text) 46%, transparent); }
.login-hint { margin-top: 14px; font-size: 12.5px; line-height: 20px;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.login-notice { margin-top: 14px; font-size: 12.5px; line-height: 20px; padding: 10px 12px;
  border-radius: var(--radius-sm); display: block;
  background: color-mix(in srgb, #3b6ff5 14%, transparent);
  border: 1px solid color-mix(in srgb, #6f9bff 38%, transparent); color: #d7e4ff; }
.login-notice.is-error { background: color-mix(in srgb, #c25555 16%, transparent);
  border-color: color-mix(in srgb, #f07878 45%, transparent); color: #ffe2e2; }
.login-notice .notice-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.login-notice .notice-head strong { font-size: 13px; }
.login-notice .notice-message { margin-top: 7px; }
.login-notice .notice-meta { margin-top: 8px; display: grid; gap: 3px; font-size: 11.5px;
  color: color-mix(in srgb, currentColor 72%, transparent); word-break: break-word; }
.login-notice .notice-retry { margin-top: 10px; }
.notice-actions { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.login-help-state { margin-top: 12px; padding-top: 12px;
  border-top: 1px solid color-mix(in srgb, currentColor 24%, transparent); }
.login-help-state.is-error { display: grid; gap: 8px; }
.session-clear-warning { margin-top: 12px; padding: 8px 12px; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-warn) 14%, transparent); color: #ffe6b4; }

/* ---- 用户面板（Lumora：衬线标题 / 液态玻璃 / 无视频） ----------------- */
.overlay-panel { display: flex; flex-direction: column;
  background:
    radial-gradient(90% 70% at 18% 0%, color-mix(in srgb, var(--color-accent-900) 55%, transparent), transparent 58%),
    radial-gradient(70% 50% at 100% 100%, color-mix(in srgb, #182C41 70%, transparent), transparent 60%),
    #070b14; }
.overlay-panel h2, .overlay-panel h3, .overlay-panel h4 {
  font-family: var(--font-display); font-weight: 400; font-style: italic;
}
.panel-head { position: relative; z-index: 1; display: flex; align-items: center; gap: 12px;
  padding: 12px clamp(18px, 3vw, 28px);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-bg) 42%, transparent);
  border-bottom: 1px solid color-mix(in srgb, #fff 8%, transparent); }
.panel-head .brand-txt { display: flex; flex-direction: column; line-height: 1.3; }
.panel-head .brand-txt .t { font-family: var(--font-display); font-style: italic;
  font-size: 18px; font-weight: 400; }
.panel-head .brand-txt .s { font-size: 11px; font-style: normal;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.panel-head .spacer { margin-left: auto; }
.panel-head-btn { border-radius: 999px; }
.panel-live { display: inline-flex; align-items: center; gap: 7px; font-size: 12.5px;
  padding: 6px 12px; border-radius: 999px;
  color: color-mix(in srgb, var(--color-text) 78%, transparent); }
.panel-live .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-ok);
  box-shadow: 0 0 8px color-mix(in srgb, var(--color-ok) 55%, transparent); }
.panel-body { position: relative; z-index: 1; flex: 1; display: flex; min-height: 0;
  gap: 16px; padding: 16px 16px 20px; }
.panel-aside { width: 228px; flex: none; display: flex; flex-direction: column; gap: 3px;
  padding: 18px 14px; overflow: auto; border-radius: 22px; }
.overlay-panel .panel-aside.liquid-glass { overflow: auto; }
.panel-aside .group-label { padding-left: 12px; margin-bottom: 8px; font-size: 11px;
  letter-spacing: 0.12em; color: color-mix(in srgb, var(--color-text) 42%, transparent); }
.tab-btn { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left;
  padding: 10px 14px; border: none; border-radius: 999px; cursor: pointer;
  font-family: inherit; font-size: 13.5px; background: transparent;
  color: color-mix(in srgb, var(--color-text) 65%, transparent); }
.tab-btn .ic { color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.tab-btn:hover { background: color-mix(in srgb, #fff 8%, transparent); color: #fff; }
.tab-btn[aria-selected="true"] { color: #fff;
  background: color-mix(in srgb, #fff 12%, transparent); }
.tab-btn[aria-selected="true"] .ic { color: #fff; }
.panel-auth { margin-top: auto; padding: 14px 12px 4px; display: flex; flex-direction: column; gap: 4px;
  font-size: 11.5px; line-height: 1.45; }
.panel-auth:empty { display: none; padding: 0; }
  font-size: 12px; border-top: 1px solid color-mix(in srgb, #fff 10%, transparent); }
.panel-auth span { color: color-mix(in srgb, var(--color-text) 55%, transparent); word-break: break-all; }
.panel-main { flex: 1; min-width: 0; overflow: auto; padding: 18px 20px 36px; }
/* 内容收成一个居中的列，不再全靠左贴边。下载 / 使用手册 / 测速 / 错误解决
   四个页共用同一列宽，视觉一致。 */
.panel-title-row,
.panel-sub,
#panel-content { width: 100%; max-width: 900px; margin-inline: auto; }
.panel-title-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.panel-title-row h2 { font-size: 32px; letter-spacing: -0.02em; }
.panel-title-row h2:focus-visible { outline-offset: 6px; }
.overlay-panel .tag-accent { background: transparent; color: #fff; border-radius: 999px;
  padding: 5px 12px; font-size: 11.5px; }
.panel-sub { margin-top: 8px; font-size: 13.5px; color: color-mix(in srgb, var(--color-text) 58%, transparent); }
.overlay-panel .card.liquid-glass,
.overlay-panel .content-state.liquid-glass,
.overlay-panel .empty-state.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  border: none; border-radius: 18px;
}
.overlay-panel .mode-switch .seg { border: none; border-radius: 999px; padding: 4px;
  background: rgba(255, 255, 255, 0.01); box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1); }
.overlay-panel .seg-opt { border-radius: 999px; }
.overlay-panel .seg-opt + .seg-opt { border-left: none; }
.overlay-panel .seg-opt[aria-pressed="true"] { color: #10131c; background: #fff;
  box-shadow: none; }
.overlay-panel .artifact-download { border-radius: 999px; }

/* 下载 tab */
.mode-switch { margin-top: 22px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.mode-switch .lbl { font-size: 13px; color: color-mix(in srgb, var(--color-text) 60%, transparent); }
.dl-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px; margin-top: 22px; max-width: 780px; }
.dl-card { display: flex; flex-direction: column; gap: 12px; padding: 24px; }
.dl-card .ico { width: 40px; height: 40px; border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--color-accent-900) 60%, transparent); color: var(--color-accent-300); }
.dl-card.is-8125 { border: 1px solid color-mix(in srgb, var(--color-warn) 45%, var(--color-neutral-800)); }
.dl-card.is-8125 .ico { background: color-mix(in srgb, var(--color-warn) 22%, transparent); color: var(--color-warn); }
.dl-card h3 { font-size: 16.5px; }
.dl-card .meta { margin-top: 4px; font-size: 12px; color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.dl-card .desc { font-size: 13.5px; line-height: 22px; color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.dl-card .foot { margin-top: auto; padding-top: 6px; display: flex; flex-direction: column; gap: 8px; }
.dl-pending { display: inline-flex; align-items: center; gap: 6px; font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.dl-pending .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--color-warn); flex: none; }
.dl-hidden-when { display: none; }

/* B21 目录、文件交付和内联状态 */
.content-state { margin-top: 24px; max-width: 820px; padding: 24px;
  border-radius: 18px; }
.content-state.is-loading { display: flex; align-items: center; gap: 12px;
  color: color-mix(in srgb, var(--color-text) 68%, transparent); }
.content-state.is-error { box-shadow: inset 0 1px 1px rgba(255, 180, 180, 0.18); }
.content-state h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; }
.content-state > p { margin-top: 8px; font-size: 14px; line-height: 22px;
  color: color-mix(in srgb, var(--color-text) 72%, transparent); }
.spinner { width: 18px; height: 18px; flex: none; border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--color-accent) 28%, transparent);
  border-top-color: var(--color-accent-300); animation: portal-spin 0.8s linear infinite; }
@keyframes portal-spin { to { transform: rotate(360deg); } }
.error-facts { margin-top: 12px; display: grid; gap: 4px; font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 60%, transparent); overflow-wrap: anywhere; }
.content-actions { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.release-summary { margin-top: 24px; max-width: 820px; padding: 24px; }
.release-heading { display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; }
.release-heading h3 { min-width: 0; font-size: 20px; overflow-wrap: anywhere; }
.release-facts { margin-top: 16px; display: grid; grid-template-columns: max-content minmax(0, 1fr);
  gap: 8px 16px; font-size: 12px; }
.release-facts dt { color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.release-facts dd { min-width: 0; overflow-wrap: anywhere;
  color: color-mix(in srgb, var(--color-text) 76%, transparent); }
.release-notes { margin-top: 16px; padding-top: 16px;
  border-top: 1px solid var(--color-neutral-800); font-size: 14px; line-height: 22px;
  color: color-mix(in srgb, var(--color-text) 72%, transparent); white-space: pre-wrap; }
.artifact-grid { width: 100%; max-width: 100%; margin-top: 24px; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); gap: 16px; }
.artifact-card { min-width: 0; display: flex; flex-direction: column; gap: 16px; padding: 24px; }
.artifact-heading { min-width: 0; display: flex; align-items: center; gap: 12px; }
.artifact-heading > div { min-width: 0; }
.artifact-heading .ico { width: 40px; height: 40px; flex: none; border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-accent-300);
  background: color-mix(in srgb, var(--color-accent-900) 60%, transparent); }
.artifact-heading h3 { font-size: 16px; overflow-wrap: anywhere; }
.artifact-heading .meta { margin-top: 4px; font-size: 12px;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.artifact-facts { display: grid; grid-template-columns: max-content minmax(0, 1fr);
  gap: 8px 12px; font-size: 12px; }
.artifact-facts dt { color: color-mix(in srgb, var(--color-text) 44%, transparent); }
.artifact-facts dd { min-width: 0; overflow-wrap: anywhere; word-break: break-word;
  color: color-mix(in srgb, var(--color-text) 72%, transparent); }
.artifact-download { width: 100%; min-width: 0; white-space: normal; overflow-wrap: anywhere; }
.artifact-download[aria-busy="true"] { cursor: wait; }
.download-status { min-height: 40px; padding: 8px 12px; border-radius: var(--radius-sm);
  font-size: 12px; line-height: 20px; color: color-mix(in srgb, var(--color-text) 56%, transparent);
  background: color-mix(in srgb, var(--color-neutral-800) 54%, transparent); overflow-wrap: anywhere; }
.download-status.is-requesting { color: #d7e4ff;
  background: color-mix(in srgb, #3b6ff5 14%, transparent); }
.download-status.is-delegated { color: #d8f4e7;
  background: color-mix(in srgb, #3b9f73 16%, transparent); }
.download-status.is-error { display: grid; gap: 8px; color: #ffe2e2;
  background: color-mix(in srgb, #c25555 16%, transparent); }
.download-status .error-facts { margin-top: 0; color: inherit; }
.text-action { justify-self: start; padding: 0; border: 0; cursor: pointer;
  font: inherit; color: var(--color-accent-300); background: transparent; text-decoration: underline; }
.download-legal { margin-top: 20px; max-width: 820px; font-size: 12px; }
.release-unavailable { display: grid; gap: 12px; text-align: left; }
.release-unavailable h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; }

/* 空状态 */
.empty-state { margin-top: 26px; max-width: 780px; padding: 56px 24px; text-align: center; font-size: 13.5px;
  color: color-mix(in srgb, var(--color-text) 50%, transparent); }

/* 错误帮助 */
.help-groups { margin-top: 22px; max-width: 100%; display: flex; flex-direction: column; gap: 26px; }
.help-group > h3 { font-size: 15px; display: flex; align-items: center; gap: 8px; }
.help-group > .note { margin-top: 6px; font-size: 12.5px; line-height: 20px;
  color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.help-list { margin-top: 12px; display: flex; flex-direction: column; gap: 10px; }
.help-item { padding: 16px 18px; }
.help-item .h { font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.help-item .h .code { font-size: 11px; letter-spacing: 0.04em; padding: 2px 7px; border-radius: 5px;
  color: var(--color-accent-100); background: var(--color-accent-800); }
.help-item .d { margin-top: 8px; font-size: 13.5px; line-height: 22px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent); }
.help-item .act { margin-top: 8px; font-size: 12.5px; color: var(--color-accent-300); }
.public-help-item.is-highlighted { border-color: color-mix(in srgb, var(--color-accent) 72%, transparent);
  box-shadow: inset 3px 0 0 var(--color-accent); }
.help-public-meta { margin-top: 12px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 16px; font-size: 12px; color: color-mix(in srgb, var(--color-text) 52%, transparent);
  overflow-wrap: anywhere; }
/* 错误帮助：界面提示 + 解决方法，按关键词搜索 */
.error-help-wrap { max-width: 820px; }
.err-search { display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  padding: 10px 12px 10px 16px; border-radius: 18px; }
.err-search > .ic { width: 18px; height: 18px; flex: none;
  color: color-mix(in srgb, var(--color-text) 55%, transparent); }
.err-search-input { flex: 1; min-width: 140px; border: none; background: transparent;
  color: var(--color-text); font: inherit; font-size: 14px; outline: none; }
.err-search-input::placeholder { color: color-mix(in srgb, var(--color-text) 42%, transparent); }
.err-search-btn { flex: none; padding: 8px 16px; font-size: 13px; }
.err-count { flex: none; font-size: 12px; letter-spacing: 0.02em; white-space: nowrap;
  color: color-mix(in srgb, var(--color-text) 52%, transparent); }
.err-results { display: flex; flex-direction: column; gap: 24px; }
.err-card { padding: 16px 18px; }
.err-card > .h { margin: 0; }
.err-fields { margin: 10px 0 0; display: grid; gap: 10px; }
.err-field { margin: 0; display: grid; gap: 4px; }
.err-k { font-size: 11px; letter-spacing: 0.06em; text-transform: none;
  color: color-mix(in srgb, var(--color-text) 48%, transparent); }
.err-v { margin: 0; font-size: 14px; line-height: 22px; color: var(--color-text); }
.err-field:last-child .err-v { font-size: 13.5px; line-height: 22px;
  color: color-mix(in srgb, var(--color-text) 78%, transparent); }
.err-pill { flex: none; font-size: 11px; line-height: 1; padding: 4px 8px; border-radius: 999px;
  font-weight: 600; letter-spacing: 0.04em; }
.err-pill.is-wait { color: var(--color-warn);
  background: color-mix(in srgb, var(--color-warn) 18%, transparent); }
.err-pill.is-danger { color: #f0a6a6;
  background: color-mix(in srgb, #e86a6a 20%, transparent); }
.help-item mark { background: color-mix(in srgb, var(--color-accent) 42%, transparent);
  color: var(--color-text); border-radius: 3px; padding: 0 2px; }
.static-guide-card { min-width: 0; padding: 20px; }
.guide-icon { width: 32px; height: 32px; flex: none; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-accent-300); background: color-mix(in srgb, var(--color-accent-900) 66%, transparent); }
.guide-steps { margin: 16px 0 0; padding-left: 20px; display: grid; gap: 8px;
  font-size: 12px; line-height: 20px; color: color-mix(in srgb, var(--color-text) 66%, transparent); }

/* 错误手册按颜色分组：黄字（先等）/ 红字（对号入座） */
.help-group.is-wait > h3 .ic { color: var(--color-warn); }
.help-group.is-danger > h3 .ic { color: #e86a6a; }
.help-group.is-wait .static-guide-card,
.help-group.is-wait .err-card { border-left: 3px solid color-mix(in srgb, var(--color-warn) 72%, transparent); }
.help-group.is-danger .static-guide-card,
.help-group.is-danger .err-card { border-left: 3px solid color-mix(in srgb, #e86a6a 72%, transparent); }
.help-group.is-wait .guide-icon { color: var(--color-warn);
  background: color-mix(in srgb, var(--color-warn) 20%, transparent); }
.help-group.is-danger .guide-icon { color: #f0a6a6;
  background: color-mix(in srgb, #e86a6a 22%, transparent); }

/* 教程：图文步骤大图 + 可读正文 */
.tutorials-groups .howto-figure { margin: 22px 0 0; padding: 12px; max-width: 820px; }
.howto-img { display: block; width: 100%; height: auto; border-radius: var(--radius-md); }
.howto-cap { margin-top: 10px; font-size: 12px; line-height: 19px;
  color: color-mix(in srgb, var(--color-text) 60%, transparent); }

/* 下载页：使用前提提示 */
.download-prereq { margin: 16px 0 0; max-width: 820px; display: flex; align-items: flex-start;
  gap: 8px; padding: 12px 14px; border-radius: var(--radius-md); font-size: 13px; line-height: 21px;
  color: color-mix(in srgb, var(--color-text) 80%, transparent);
  background: color-mix(in srgb, var(--color-warn) 12%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--color-warn) 30%, transparent); }
.download-prereq .ic { flex: none; margin-top: 2px; color: var(--color-warn); }

/* ---- 对话框 ------------------------------------------------------------- */
.dialog-backdrop { position: fixed; inset: 0; z-index: 100; display: flex;
  align-items: center; justify-content: center; padding: 24px;
  background: color-mix(in srgb, var(--color-neutral-900) 55%, transparent); }
.dialog { width: min(580px, 100%); max-height: 82vh; display: flex; flex-direction: column;
  gap: var(--space-3); padding: 20px 22px; border-radius: var(--radius-lg);
  background: var(--color-surface); box-shadow: var(--shadow-lg); }
.dialog-title { font-size: 20px; display: flex; align-items: center; gap: 8px; }
.dialog-title .ic { color: var(--color-accent-300); }
.dialog-body { font-size: 13px; line-height: 22px; overflow: auto; min-height: 0;
  color: color-mix(in srgb, var(--color-text) 82%, transparent); }
.dialog-body ol { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 10px; }
.dialog-body .updated { margin-bottom: 12px; font-size: 12px; color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ---- 响应式：≤760px（覆盖 390x844 移动端） ----------------------------- */
@media (max-width: 760px) {
  .nav-links { display: none; }
  .nav > .btn-cta { display: none; }
  .nav-menu-btn { display: inline-flex; }
  .hero-cinema { min-height: calc(100svh - 58px); }
  .hero-cinema h1 { font-size: clamp(34px, 9.4vw, 44px); }
  .hero-badge { max-width: min(88vw, 340px); font-size: 11.5px; text-align: center; }
  .hero-stats .sep { display: none; }
  .feature-row { grid-template-columns: 48px 1fr; }
  .feature-row p { grid-column: 1 / -1; }
  .cta { padding: 36px 22px; }
  .hero { padding-top: 40px; gap: 36px; }
  .hero-figure { overflow: clip; }
  .panel-body { flex-direction: column; }
  .panel-aside { width: auto; flex-direction: row; flex-wrap: wrap; align-items: center;
    gap: 6px; padding: 12px; overflow-x: visible; }
  .panel-aside .group-label { display: none; }
  .tab-btn { width: auto; padding: 8px 12px; }
  .tab-btn[aria-selected="true"] { box-shadow: none; }
  .panel-auth { margin-top: 0; flex-basis: 100%; border-top: none;
    border-left: 1px solid color-mix(in srgb, #fff 10%, transparent); padding-left: 10px; }
  .login-aside { display: none; }
  .login-main { padding: 32px 24px; }
  .panel-head { flex-wrap: wrap; }
  .panel-head .spacer { margin-left: 0; max-width: 100%; overflow-wrap: anywhere; }
  .panel-main { padding: 24px 20px 40px; }
  .panel-title-row h2 { font-size: 26px; }
  .dl-grid { grid-template-columns: 1fr; }
  .help-public-meta { grid-template-columns: 1fr; }
  .err-search { border-radius: 16px; }
  .err-search-btn { margin-left: auto; }
  .release-facts, .artifact-facts { grid-template-columns: 1fr; gap: 4px; }
  .release-facts dd, .artifact-facts dd { margin-bottom: 8px; }
}

/* ---- 减少动效偏好 ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .snap-card, .snap-link img { transition: none; }
  .spinner { animation: none; }
  .hero-cinema-frame { animation: none; }
  .hero-scene { transition: none; }
  .marquee-track { animation: none; }
  .overlay-stars, .overlay-stars::after { animation: none; }
  .nav-menu, .nav-menu-panel a, .nav-menu-panel .btn-cta { transition: none; }
}

/* ---- B23 网盘包卡片与报修码（版式复刻自 OO双转 设计稿的双卡下载页） ---- */
.pkg-grid { grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); }
.pkg-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 24px;
}
.pkg-card[data-pkg="rtl8125"] {
  border: 1px solid rgba(255, 106, 106, .45);
}
.pkg-ico {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(124, 108, 255, .16);
  border: 1px solid rgba(124, 108, 255, .25);
}
.pkg-card[data-pkg="rtl8125"] .pkg-ico {
  background: rgba(255, 106, 106, .14);
  border-color: rgba(255, 106, 106, .3);
}
.pkg-title { margin: 4px 0 0; font-size: 20px; }
.pkg-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0;
  font-size: 13px;
  opacity: .8;
}
.pkg-version {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 3px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .05);
}
.pkg-desc { margin: 2px 0 0; opacity: .9; }
.pkg-card .pkg-link { margin-top: 8px; align-self: flex-start; }
.pkg-card[data-pkg="rtl8125"] .pkg-link {
  border-color: rgba(255, 106, 106, .55);
  color: #ff9a9a;
}
.pkg-code {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
  flex-wrap: wrap;
}
.pkg-code .lbl { font-size: 13px; opacity: .75; }
.pkg-code-value {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 3px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
}
.pkg-copy { padding: 4px 14px; }
/* 暂未上架的卡：保留卡位与说明，不放假按钮 */
.pkg-card.is-unreleased { opacity: .78; }
.pkg-unreleased {
  display: flex; align-items: flex-start; gap: 8px; margin: 6px 0 0;
  font-size: 13px; line-height: 20px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}
.pkg-unreleased .ic { flex: none; width: 16px; height: 16px; margin-top: 2px; color: var(--color-warn); }
/* 旧版本并列区：一条分隔线下的次级入口 */
.pkg-legacy {
  width: 100%; margin-top: 10px; padding-top: 12px;
  border-top: 1px dashed color-mix(in srgb, var(--color-text) 16%, transparent);
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
}
.pkg-legacy-head { display: flex; align-items: center; gap: 10px; margin: 0; font-size: 13px; }
.pkg-legacy-head .lbl { opacity: .75; }
.pkg-legacy-head .pkg-version { font-size: 12.5px; padding: 2px 10px; opacity: .85; }
.pkg-legacy-desc { margin: 0; font-size: 13px; line-height: 20px;
  color: color-mix(in srgb, var(--color-text) 66%, transparent); }
.pkg-card .pkg-legacy-link { margin-top: 2px; }
.err-v.err-code { font-weight: 600; letter-spacing: 1px; }