/* ============================================================
   FLMC — AI 电影制作平台 · 全站设计系统
   深色电影感主题，覆盖导航 / 页脚 / 卡片 / 网格 / 灯箱 / 响应式
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 枫霖视觉体系 v1（2026-09-12 全面个性化：墨青底 + 枫叶橙主色 + 青碧辅助色）
     说明：本套配色/字体/圆角为自有品牌识别，不再沿用任何外部站点数值 */
  --bg: #0e1519;              /* 墨青底 */
  --bg-soft: #121a1f;
  --bg-canvas: #141d23;       /* 无限画布底色 */
  --bg-card: #18232a;         /* 卡片底 */
  --bg-elev: #1d2a32;         /* 浮层 */
  --border: #27353d;
  --border-strong: #33454f;
  --text: #d9e2e6;
  --text-dim: #a3b2b9;
  --text-faint: #6f828a;
  --accent: #e8632b;          /* 枫叶橙（品牌主色） */
  --accent-strong: #f0763c;
  --accent-glow: rgba(232, 99, 43, 0.16);
  --accent-2: #35c9c0;        /* 青碧（辅助色：链接/成功态） */
  --btn-fill: #e8632b;        /* 主按钮=品牌色填充（原先米白，为差异化重点） */
  --btn-fill-hover: #f0763c;
  --btn-text: #ffffff;
  --ok: #35c9c0;
  --danger: #e5484d;

  /* 字体：标题用衬线（电影/出版气质），正文用现代无衬线 */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei UI", "Microsoft YaHei",
    -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;

  /* 布局 */
  --container: 1200px;
  --nav-h: 44px;   /* 自有节奏：比原先 35px 更舒展 */
  --radius: 10px;  /* 圆角体系整体更方正，形成识别差异 */
  --radius-lg: 14px;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.28s;

  /* 渐变海报封面（占位）
     封面明暗区间按实测调校：平均亮度 22~48、暗像素(<30)占 44%~95%，
     即"深色电影剧照"而非明亮渐变色块，故整体压暗 + 降饱和。 */
  --poster-1: linear-gradient(160deg, #150c22 0%, #2a3350 55%, #5c4a2c 100%);
  --poster-2: linear-gradient(160deg, #0a1214 0%, #16252b 45%, #24333a 100%);
  --poster-3: linear-gradient(160deg, #1c1024 0%, #2e2038 60%, #4a2440 100%);
  --poster-4: linear-gradient(160deg, #101426 0%, #361a1c 50%, #5a4322 100%);
  --poster-5: linear-gradient(160deg, #050a12 0%, #0d2233 60%, #1d3b45 100%);
  --poster-6: linear-gradient(160deg, #0b1a17 0%, #14321f 100%);
  --poster-7: linear-gradient(160deg, #1a1020 0%, #2a1830 60%, #3d2138 100%);
  --poster-8: linear-gradient(160deg, #0a0a0a 0%, #18232a 100%);
  --poster-9: linear-gradient(160deg, #241310 0%, #3a2430 100%);
  --poster-10: linear-gradient(160deg, #0b1120 0%, #1f2b3a 100%);
  --poster-11: linear-gradient(160deg, #16202b 0%, #2b2536 50%, #3a2c38 100%);
  --poster-12: linear-gradient(160deg, #0a0a18 0%, #1a1a30 50%, #262640 100%);
  --poster-13: linear-gradient(160deg, #101a20 0%, #24363a 100%);
  --poster-14: linear-gradient(160deg, #1a0a08 0%, #22101a 60%, #1a1a2a 100%);
  --poster-15: linear-gradient(160deg, #0c1410 0%, #1c2a22 100%);
  --poster-16: linear-gradient(160deg, #1a120c 0%, #241c14 50%, #2e241a 100%);
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 枫霖视觉体系：一级标题用衬线（出版/电影气质），正文保持无衬线 */
h1, .home-hero h1, .hero h1, .pj-head h1, .ed3d-plan-head, .brand {
  font-family: var(--font-display);
}
.brand {
  letter-spacing: 0.01em;
}

/* 电影感的背景氛围：顶部光晕 + 噪点 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 45% at 50% -5%, rgba(232, 99, 43, 0.07), transparent 70%),
    radial-gradient(40% 35% at 85% 10%, rgba(120, 90, 255, 0.06), transparent 70%),
    var(--bg);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

::selection {
  background: var(--accent);
  color: #0e1519;
}

/* ---------- 排版工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
}

.section {
  padding: 96px 0;
}

.section-head {
  max-width: 680px;
  margin-bottom: 48px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head.center .eyebrow::before {
  display: none;
}

.section-title {
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 14px 0 16px;
}

.section-desc {
  color: var(--text-dim);
  font-size: 16px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 999px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease), border-color var(--dur) var(--ease);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  /* 原站主按钮实测：米白填充 + 深色文字（非琥珀色渐变） */
  background: var(--btn-fill);
  color: var(--btn-text);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

.btn-primary:hover {
  background: var(--btn-fill-hover);
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.btn-ghost {
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 7px 15px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 15px;
}

/* ---------- 导航栏 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(18, 18, 18, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* 导航内的主按钮：原站是 65×21 的小号米白胶囊 */
.nav-actions .btn {
  padding: 3px 12px;
  font-size: 12px;
  gap: 5px;
}

.nav-actions {
  gap: 8px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
  padding: 6px 0;   /* 保证触控高度（导航高 35，品牌 22+12=34） */
}

.brand svg {
  width: 17px;
  height: 17px;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.brand em {
  font-style: normal;
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 5px 11px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: 8px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a.active {
  color: var(--text);
}

.nav-links a.active::after {
  content: "";
  display: block;
  /* 第 105 轮：按原站形态改成"当前项下方一个小圆点"（用品牌色），原来是和文字等宽的下划线 */
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin: 5px auto 0;
  background: var(--accent);
}

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

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: color var(--dur), border-color var(--dur);
}

.lang-switch:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.lang-switch .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
}

/* 移动端汉堡按钮 */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}

.nav-burger span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-burger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-burger.open span:nth-child(2) {
  opacity: 0;
}

.nav-burger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端展开菜单 */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px 24px;
  background: rgba(18, 18, 18, 0.96);
  border-bottom: 1px solid var(--border);
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  border-radius: 10px;
}

.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

/* ---------- Hero（首页） ---------- */
.hero {
  position: relative;
  padding: 110px 0 96px;
  text-align: center;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.hero-badge .pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(74, 222, 128, 0); }
}

.hero h1 {
  font-size: clamp(38px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent) 20%, #ffd9a0 50%, var(--accent-strong) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero p.lead {
  max-width: 620px;
  margin: 0 auto 40px;
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--text-dim);
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-hint {
  margin-top: 22px;
  font-size: 13px;
  color: var(--text-faint);
}

/* Hero 电影胶片装饰带 */
.hero-strip {
  margin-top: 80px;
  position: relative;
  height: 240px;
  display: flex;
  gap: 16px;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.hero-strip .frame {
  flex: 0 0 auto;
  width: 180px;
  height: 100%;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
  animation: strip-drift 40s linear infinite;
}

.hero-strip .frame .art {
  position: absolute;
  inset: 0;
}

.hero-strip .frame:nth-child(2) { animation-delay: -8s; }
.hero-strip .frame:nth-child(3) { animation-delay: -16s; }
.hero-strip .frame:nth-child(4) { animation-delay: -24s; }
.hero-strip .frame:nth-child(5) { animation-delay: -32s; }

@keyframes strip-drift {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-100% - 16px)); }
}

/* ---------- 特性卡片（首页） ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}

.feature::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--accent-glow);
  filter: blur(40px);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.feature:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
}

.feature:hover::after {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent-glow);
  color: var(--accent);
  margin-bottom: 20px;
  font-size: 22px;
}

.feature h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature p {
  font-size: 14.5px;
  color: var(--text-dim);
}

/* ---------- 数字统计条 ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat {
  text-align: center;
}

.stat b {
  display: block;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, var(--text) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.stat span {
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- 作品卡片（projects 页核心） ---------- */
.page-hero {
  padding: 84px 0 56px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(32px, 5.5vw, 56px);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 16px 0 18px;
}

.page-hero p {
  max-width: 560px;
  margin: 0 auto;
  color: var(--text-dim);
  font-size: 16px;
}

/* 筛选栏 */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 0 26px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-tab {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-dim);
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: all var(--dur) var(--ease);
}

.filter-tab:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.filter-tab.active {
  color: #0e1519;
  background: var(--accent);
  border-color: var(--accent);
}

.filter-count {
  font-size: 13px;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

/* 作品网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
  animation: fade-up 0.5s var(--ease) both;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.5);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.poster {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.poster .art {
  position: absolute;
  inset: 0;
  transition: transform 0.6s var(--ease);
}

.card:hover .poster .art {
  transform: scale(1.06);
}

/* 海报上的电影构图元素（胶片孔 + 光晕 + 人物剪影） */
.poster .sprockets {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.85) 0 6px,
    transparent 6px 26px
  );
}

.poster .flare {
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.35), transparent 70%);
  top: 12%;
  right: 14%;
  filter: blur(2px);
}

.poster .silhouette {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 46%;
  height: 55%;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 45% 45% 0 0 / 30% 30% 0 0;
  filter: blur(6px);
}

.poster .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.poster .dur {
  position: absolute;
  bottom: 12px;
  right: 12px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: #fff;
  background: rgba(0, 0, 0, 0.6);
  padding: 3px 8px;
  border-radius: 6px;
  backdrop-filter: blur(4px);
}

/* 播放按钮（hover 显示） */
.play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(232, 99, 43, 0.92);
  color: #0e1519;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.play-btn svg {
  width: 20px;
  height: 20px;
  margin-left: 3px;
}

.card:hover .play-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.card-body {
  padding: 18px 20px 20px;
}

.card-body h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 12px;
}

.card-meta .sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-faint);
}

.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 999px;
}

.tag.accent {
  color: var(--accent);
  border-color: rgba(232, 99, 43, 0.35);
  background: var(--accent-glow);
}

/* ---------- 快捷指令胶囊（全站通用） ----------
   首页 / 工作区 / FLMC TV / FLMC百科 的助手面板都用到 .chip，
   此前该样式只写在 editor.css 里，导致这些页面的快捷指令是「裸文字按钮」。 */
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  transition: all var(--dur);
  white-space: nowrap;
  min-height: 32px;
}

.chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-glow);
}

/* 重点操作胶囊（品牌色描边，用于一眼能看到的主推功能；2026-09-13 新增：运镜→实拍） */
.chip-hot {
  color: var(--accent);
  border-color: rgba(232, 99, 43, 0.55);
  background: var(--accent-glow);
}
.chip-hot:hover {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------- 顶部导航用户头像（全站，含不加载 sidebar.css 的定价/文档/关于页） ---------- */
.nav-avatar {
  width: 28px;    /* 截图实测头像 31×31，导航总高 35 */
  height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: inherit;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #0e1519;
  background: var(--accent);
  border: 2px solid rgba(255, 255, 255, 0.22);
  cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur);
}

.nav-avatar:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

/* ---------- 加载更多 ---------- */
.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: 48px 0 0;
}

/* ---------- 灯箱（播放弹窗） ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
}

.lightbox.open {
  display: flex;
  animation: fade-in 0.25s var(--ease);
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lightbox-stage {
  width: 100%;
  max-width: 900px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  animation: pop-in 0.3s var(--ease);
}

@keyframes pop-in {
  from { opacity: 0; transform: scale(0.94) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.lightbox-video {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.lightbox-video .art {
  position: absolute;
  inset: 0;
}

.lightbox-video .fake-video {
  position: relative;
  z-index: 1;
  text-align: center;
  color: rgba(255, 255, 255, 0.9);
}

.lightbox-video .fake-video .pulse-ring {
  width: 76px;
  height: 76px;
  margin: 0 auto 16px;
  border-radius: 50%;
  border: 2px solid rgba(232, 99, 43, 0.6);
  display: grid;
  place-items: center;
  animation: pulse 2s infinite;
}

.lightbox-video .fake-video p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
}

.lightbox-info {
  padding: 22px 26px 26px;
}

.lightbox-info h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}

.lightbox-info .meta {
  color: var(--text-dim);
  font-size: 13.5px;
  margin-bottom: 14px;
}

.lightbox-info .desc {
  font-size: 14.5px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 3;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 18px;
  display: grid;
  place-items: center;
  transition: background var(--dur);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.22);
}

.lightbox .lb-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- CTA 区块 ---------- */
.cta-band {
  background:
    radial-gradient(70% 120% at 50% 120%, var(--accent-glow), transparent 60%),
    var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 64px 40px;
  text-align: center;
  margin: 96px 0;
}

.cta-band h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.cta-band p {
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto 32px;
}

/* ---------- 定价页 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.plan {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.plan:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.plan.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 24px 60px var(--accent-glow);
}

.plan-flag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0e1519;
  background: var(--accent);
  padding: 5px 16px;
  border-radius: 999px;
}

.plan h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan .plan-desc {
  font-size: 13.5px;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.plan .price {
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.plan .price small {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-faint);
}

.plan .per {
  font-size: 13px;
  color: var(--text-faint);
  margin-bottom: 28px;
}

.plan ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex: 1;
}

.plan li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: var(--text-dim);
}

.plan li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 800;
}

.plan .btn {
  width: 100%;
}

/* ---------- 文档 / 关于页 ---------- */
.doc-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}

.doc-side {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.doc-side a {
  font-size: 14px;
  color: var(--text-dim);
  padding: 9px 14px;
  border-radius: 8px;
  transition: all var(--dur);
}

.doc-side a:hover,
.doc-side a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.doc-side a.active {
  color: var(--accent);
}

.doc-body h2 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 40px 0 14px;
}

.doc-body h2:first-child {
  margin-top: 0;
}

.doc-body p {
  color: var(--text-dim);
  margin-bottom: 16px;
  max-width: 640px;
}

.doc-body ul {
  max-width: 640px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.doc-body ul li {
  display: flex;
  gap: 10px;
  color: var(--text-dim);
  font-size: 15px;
}

.doc-body ul li::before {
  content: "→";
  color: var(--accent);
  font-weight: 800;
}

.callout {
  background: var(--accent-glow);
  border: 1px solid rgba(232, 99, 43, 0.3);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 14.5px;
  color: var(--text);
  max-width: 640px;
}

.callout b {
  color: var(--accent);
}

/* 关于页：时间线 / 价值卡片 */
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}

.value-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.value-card p {
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 64px 0 40px;
  margin-top: 96px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 14px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-dim);
  padding: 5px 0;
  transition: color var(--dur);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: 28px;
  font-size: 13px;
  color: var(--text-faint);
}

.footer-bottom .legal {
  display: flex;
  gap: 20px;
}

.footer-bottom a:hover {
  color: var(--text);
}

.socials {
  display: flex;
  gap: 10px;
}

.socials a {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text-dim);
  font-size: 15px;
  transition: all var(--dur);
}

.socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- 滚动显现动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .features, .pricing-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .doc-layout { grid-template-columns: 1fr; }
  .doc-side { position: static; flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-burger { display: flex; }
  .section { padding: 72px 0; }
  .hero { padding: 80px 0 72px; }
  .hero-strip { height: 170px; }
  .hero-strip .frame { width: 130px; }
  .features, .pricing-grid, .value-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-band { padding: 48px 24px; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .grid, .grid.cols-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta .btn { width: 100%; }
  .container { padding: 0 18px; }
  .nav-actions { gap: 6px; }
}

/* ---------- 移动端触控优化（≥32px 可点区域） ---------- */
@media (max-width: 560px) {
  .chip {
    min-height: 36px;
    padding: 9px 15px;
    font-size: 13px;
  }
  .footer-bottom .legal a,
  .footer-col a {
    padding: 5px 0;
    display: inline-block;
  }
  .nav-avatar {
    width: 36px;
    height: 36px;
  }
}